CN105093656A - Liquid crystal display panel, driving method thereof and liquid crystal display device - Google Patents

Abstract

The invention discloses a liquid crystal display panel, a driving method thereof, and a liquid crystal display device. The liquid crystal display panel includes: a first substrate and a second substrate oppositely arranged; a driving array formed by a plurality of sub-pixel driving units is arranged on the surface of the first substrate opposite to the second substrate; the second substrate A sub-pixel array formed by a plurality of sub-pixels is provided on the surface opposite to the first substrate, each of the sub-pixels includes a black matrix, and the sub-pixels correspond to the sub-pixel driving units one by one, each The sub-pixels include: a first sub-pixel area, the first sub-pixel area is a colored sub-pixel area; a second sub-pixel area, the second sub-pixel area is a white sub-pixel area; the drive array controls The first sub-pixel area and the second sub-pixel area; the liquid crystal molecule layer are arranged between the first substrate and the second substrate.

Description

Liquid crystal display panel, driving method thereof, and liquid crystal display device

technical field

The invention relates to the field of display technology, in particular to a liquid crystal display panel, a driving method thereof, and a liquid crystal display device with the liquid crystal display panel.

Background technique

Today, consumers are gradually improving the display quality of portable mobile terminals, and the design and development of high PPI (PixelPerInch, pixels per inch) display has become a hot spot in the display industry. At this stage, products above 800PPI have appeared, but there are many problems in the display panels of high-PPI products: the manufacturing process requirements are extremely high, which makes it difficult to improve the manufacturing yield of display panels of high-PPI products, and it is also difficult to reduce costs; the aperture ratio is small, The transmittance is low; the width of the black matrix is small, and the alignment color shift is serious.

In this context, sub-pixel rendering (low PPI products can be rendered with high PPI display effect by rationally arranging the pixel sequence) technology emerged as the times require, providing a shortcut for the marketization of high PPI technology.

Contents of the invention

In view of the defects in the prior art, the object of the present invention is to provide a liquid crystal display panel and a driving method thereof. The liquid crystal display panel can increase the brightness of the liquid crystal display panel under the condition of ensuring color saturation.

According to one aspect of the present invention, there is provided a liquid crystal display panel, which is characterized in that it includes: a first substrate and a second substrate oppositely arranged; a plurality of sub-pixels are arranged on the surface of the first substrate opposite to the second substrate A driving array formed by a driving unit; a sub-pixel array formed by a plurality of sub-pixels is provided on the surface of the second substrate opposite to the first substrate, and a black matrix is included between each of the sub-pixels, and the sub-pixels are connected to the The sub-pixel driving units correspond to each other, and each of the sub-pixels includes: a first sub-pixel area, the first sub-pixel area is a colored sub-pixel area; a second sub-pixel area, the second sub-pixel area is a white sub-pixel area; the driving array controls the first sub-pixel area and the second sub-pixel area respectively; the liquid crystal molecule layer is arranged between the first substrate and the second substrate.

Optionally, in each of the sub-pixels, the ratio of the area occupied by the second sub-pixel region to the area occupied by the first sub-pixel region is less than or equal to 1/3.

Optionally, the sub-pixels are rectangular in shape, and a plurality of the sub-pixels are arranged in a matrix.

Optionally, the second sub-pixel area in each of the sub-pixels is respectively disposed on both sides of the first sub-pixel area.

Optionally, in the same sub-pixel, the areas of the second sub-pixel regions located on both sides of the first sub-pixel region are equal.

Optionally, in the same sub-pixel, the area of the second sub-pixel region on one side of the first sub-pixel region is larger than the area of the second sub-pixel region on the other side thereof.

Optionally, the first sub-pixel area is any one of a red sub-pixel area, a green sub-pixel area and a blue sub-pixel area.

Optionally, the red sub-pixel area is provided with a red filter, the green sub-pixel area is provided with a green filter, and the blue sub-pixel area is provided with a blue filter.

Optionally, the first sub-pixel area of any adjacent three sub-pixels in each row of the sub-pixel array is an arrangement and combination of a red sub-pixel area, a green sub-pixel area and a blue sub-pixel area, and each adjacent The first sub-pixel regions of the two sub-pixels in each column in the two rows are different.

Optionally, the first sub-pixel regions of each row of sub-pixels in the sub-pixel array are respectively arranged circularly in red sub-pixel regions, green sub-pixel regions, and blue sub-pixel regions, and the sub-pixels in the same column in odd-numbered rows The first sub-pixel regions have the same color, and the first sub-pixel regions of the sub-pixels in the same column in the even rows have the same color.

Optionally, the arrangement of subpixels in even rows in the subpixel array is shifted to one side in the row direction relative to the arrangement of subpixels in odd rows.

Optionally, the offset distance is less than or equal to 3/4 of the distance between each sub-pixel in the offset direction.

Optionally, in the sub-pixel array, every three rows and four columns of sub-pixels form a display unit, and every two horizontally adjacent display units share two columns of sub-pixels, and every vertically adjacent two display units share two row of subpixels.

Optionally, in the sub-pixel array, every three rows and four columns of sub-pixels form a display unit, and every two horizontally adjacent display units share two columns of sub-pixels, and every vertically adjacent two display units share two Row sub-pixels, wherein, in each display unit, the brightness distribution coefficients of the sub-pixels located in the middle two columns are twice the brightness distribution coefficients of the sub-pixels located in the two columns located on both sides.

Optionally, the drive array includes: a plurality of first gate lines, a plurality of data lines, and a plurality of sub-pixel drivers defined by the first gate lines and data lines arranged on the first substrate. unit; the sub-pixel driving unit includes a pixel electrode and a first thin film transistor; the position of the pixel electrode corresponds to the first sub-pixel region, and the gate of the first thin film transistor is connected to the first gate line Electrically connected, the source is electrically connected to the data line, and the drain is electrically connected to the pixel electrode; a plurality of second gate lines, a plurality of supplementary electrodes and a plurality of second thin films arranged on the first substrate Transistor; the supplementary electrode is arranged between the pixel electrodes and corresponds to the position of the black matrix; the gate of each second thin film transistor is electrically connected to the corresponding second gate line, The source is electrically connected to the corresponding data line, and the drain is electrically connected to the corresponding supplementary electrode; the first control circuit is electrically connected to the first gate line, and the first control circuit controls the Turn on or off the first thin film transistor to control the voltage of the pixel electrode; a second control circuit electrically connected to the second gate line, the second control circuit controls the turn on of the second thin film transistor or off, to control the supplementary electrode voltage.

Optionally, the first thin film transistor and the second thin film transistor form a J shape; the first gate line is insulated from the second gate line and arranged in parallel.

Optionally, the liquid crystal display panel further includes a detection module, and the detection module detects brightness of all first sub-pixel regions on the entire liquid crystal display panel.

According to another aspect of the present invention, there is also provided a liquid crystal display device, which is characterized by comprising the above-mentioned liquid crystal display panel.

According to still another aspect of the present invention, there is also provided a driving method for the above-mentioned liquid crystal display panel, which is characterized by comprising the following steps: driving the sub-pixel driving unit in the array to drive the first sub-pixel region of the sub-pixel to emit light; The detection module detects the brightness of all the first sub-pixel regions on the entire liquid crystal display panel; the sub-pixel driving unit in the driving array drives the second sub-pixel regions of the sub-pixels to emit light.

Optionally, when the brightness of all red sub-pixel regions on the liquid crystal display panel is equal to the brightness of all green sub-pixel regions and all blue sub-pixel regions, the sub-pixel driving unit in the drive array drives the second sub-pixel area glows.

Optionally, the driving voltage of the second sub-pixel region is the same as that of the first sub-pixel region.

Compared with the prior art, in the liquid crystal display panel and the liquid crystal display device provided by the embodiments of the present invention, each sub-pixel includes a first sub-pixel area and a second sub-pixel area, wherein the first sub-pixel area is a colored sub-pixel area, The second sub-pixel area is a white sub-pixel area, which improves the aperture ratio and transmittance through the light emission of the white sub-pixel area, and through the arrangement and rendering of sub-pixels, a high PPI display effect is obtained with a lower actual PPI design, reducing the High PPI display panel manufacturing process is difficult and cost saving. In addition, the arrangement of the white sub-pixel area can also increase the distance between adjacent colored sub-pixel areas, thereby improving the alignment color shift. In addition, the present invention also controls the light emission of the first sub-pixel area and the second sub-pixel area respectively through the driving array formed by the sub-pixel driving unit, so as to avoid the color saturation that occurs when the second sub-pixel area emits light simultaneously with the first sub-pixel area. The attenuation is serious, and the brightness of the LCD panel is improved while ensuring the color saturation.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is the longitudinal sectional structure schematic diagram of liquid crystal display panel of the present invention;

FIG. 2 is a schematic diagram of sub-pixel arrangement of a liquid crystal display panel provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of sub-pixel arrangement of a liquid crystal display panel provided by another embodiment of the present invention;

4 is a schematic diagram of the relationship between brightness distribution coefficients between sub-pixels in a display unit of a liquid crystal display panel provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first substrate provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a sub-pixel driving unit in the first substrate shown in FIG. 5;

FIG. 7 is a partially enlarged view of the sub-pixel driving unit shown in FIG. 6;

Fig. 8 is a schematic cross-sectional structure diagram of the sub-pixel driving unit in Fig. 7 along the aa' direction;

Fig. 9 is a schematic cross-sectional structure diagram of the sub-pixel driving unit in Fig. 7 along the bb' direction; and

FIG. 10 is a flowchart of a method for driving a liquid crystal display panel provided by an embodiment of the present invention.

Detailed ways

The technical content of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Please refer to FIG. 1 and FIG. 2 , which respectively show a schematic longitudinal cross-sectional structure diagram of a liquid crystal display panel of the present invention and a schematic diagram of sub-pixel arrangement of a liquid crystal display panel provided by an embodiment of the present invention. In a preferred embodiment of the present invention, the liquid crystal display panel includes: a first substrate 1 , a second substrate 2 and a liquid crystal molecule layer 3 .

As shown in FIG. 1 , the second substrate 2 is disposed opposite to the first substrate 1 . The liquid crystal molecule layer 3 is disposed between the first substrate 1 and the second substrate 2 .

A sub-pixel array formed by a plurality of sub-pixels 21 is disposed on the surface of the second substrate 2 opposite to the first substrate 1 , and a black matrix 22 is included between each sub-pixel 21 . FIG. 2 is illustrated by taking a part of sub-pixel arrays (five rows and six columns) in a liquid crystal display panel as an example. As shown in FIG. 2 , each sub-pixel 21 includes: a first sub-pixel area 211 and a second sub-pixel area 212 .

The first sub-pixel area 211 is a colored sub-pixel area. As shown in FIG. 2 , optionally, the colored sub-pixel area refers to any one of the red sub-pixel area R, the green sub-pixel area G and the blue sub-pixel area B. In one embodiment of the present invention, the formation of the red sub-pixel region R, the green sub-pixel region G and the blue sub-pixel region B is realized by disposing colored filters on the second substrate 2, specifically, the second substrate 2 The formation of the red sub-pixel region R on the second substrate 2 is to arrange a red filter at the predetermined position of the red sub-pixel region R on the second substrate 2; the formation of the green sub-pixel region G on the second substrate 2 is to Set the green filter at the predetermined position of the green sub-pixel region G on the second substrate 2; the formation of the blue sub-pixel region B on the second substrate 2 is at the predetermined position of the blue sub-pixel region B on the second substrate 2 Set blue filter.

Optionally, the first sub-pixel area 211 of any three adjacent sub-pixels 21 in each row of the sub-pixel array is an arrangement and combination of the red sub-pixel area R, the green sub-pixel area G and the blue sub-pixel area B , and the first sub-pixel regions 211 of the two sub-pixels 21 in the same column in every two adjacent rows are different.

Optionally, the first sub-pixel regions 211 of each row of sub-pixels 21 in the sub-pixel array are respectively arranged circularly with red sub-pixel regions R, green sub-pixel regions G, and blue sub-pixel regions B, and the odd-numbered rows (as shown in FIG. 2 The first sub-pixel area 211 of the sub-pixel 21 in the same column in the first row, the third row and the fifth row is an example) in the same color, and in the even-numbered row (taking the second row and the fourth row in FIG. 2 as an example) The first sub-pixel regions 211 of the sub-pixels 21 in the same column have the same color. In the sub-pixel array of five rows and six columns shown in FIG. The arrangement of the sub-pixel area R, the green sub-pixel area G, and the blue sub-pixel area B is cyclically arranged; and the first sub-pixel area 211 of the sub-pixel 21 in the second row and the fourth row of the sub-pixel array is from From left to right, the blue sub-pixel area B, the red sub-pixel area R, and the green sub-pixel area G are arranged circularly.

The second sub-pixel area 212 is a white sub-pixel area. The formation of the white sub-pixel area can be realized by setting a transparent filter at the predetermined position of the white sub-pixel area on the second substrate 2 or without setting any filter. Optionally, the areas occupied by the first sub-pixel regions 211 in each sub-pixel 21 are equal. In order not to affect the brightness of the liquid crystal display panel when only the first sub-pixel region 211 is driven (the second sub-pixel region 211 is not driven), in each sub-pixel 21, the area occupied by the second sub-pixel region 212 is the same as that of the first sub-pixel. The area ratio of the area 211 is less than or equal to 1/3.

Further, in the preferred embodiment shown in FIG. 2 , each sub-pixel 21 is rectangular in shape, and a plurality of sub-pixels 21 are arranged in a matrix. Both the first sub-pixel area 211 and the second sub-pixel area 212 are substantially rectangular. The second sub-pixel area 212 in each sub-pixel 21 is respectively disposed on both sides of the first sub-pixel area 211 , that is, the second sub-pixel area 212 in each sub-pixel 21 is divided into two parts by the first sub-pixel area 211 . In the same sub-pixel 21 , the areas of the second sub-pixel regions 212 located on both sides of the first sub-pixel region 211 are equal. In some variations, in the same sub-pixel 21, the areas of the second sub-pixel regions 212 located on both sides of the first sub-pixel region 211 may also be unequal, for example, the area of the second sub-pixel region 212 located on one side of the first sub-pixel region 211 The area of the second sub-pixel region 212 is larger than the area of the second sub-pixel region 212 on the other side. In addition, the shape of each sub-pixel 21 can be changed, for example, it can be circular, triangular, etc. In these variations, the second sub-pixel area can be arranged outside the first sub-pixel area, which will not be repeated here.

Further, please refer to FIG. 3 , which shows a schematic diagram of sub-pixel arrangement of a liquid crystal display panel provided by another embodiment of the present invention. In the embodiment shown in FIG. 3, the arrangement of the sub-pixels 21 of the even-numbered rows (see the second row and the fourth row in FIG. The arrangement of the sub-pixels 21 in one row, the third row and the fifth row) is shifted to one side in the row direction. Optionally, the offset distance is less than or equal to 3/4 of the spacing distance of each sub-pixel 21 in the offset direction, thereby preventing jagged images from appearing on the liquid crystal display panel, making the displayed lines smoother, and the displayed image softer.

Further, in a preferred embodiment of the present invention, in the sub-pixel array of the liquid crystal display panel, every three rows and four columns of sub-pixels form a display unit. In addition, two laterally adjacent display units share two columns of sub-pixels, and each vertically adjacent two display units share two rows of sub-pixels, so that the PPI of the sub-pixel array along the row direction is increased by 1.5 times. In the five-row and six-column sub-pixel array shown in FIG. 2 , six display units 61 , 62 , 63 , 64 , 65 and 66 are included. As shown in FIG. 2, between the display units 61 and 62, between the display units 63 and 64, and between the display units 65 and 66 are all sharing the sub-pixels 21 of the third column and the fourth column in the sub-pixel array; Between the display units 61 and 63 and between the display units 62 and 64 are the sub-pixels 21 sharing the second row and the third row in the sub-pixel array; between the display units 63 and 65 and between the display units 64 and 66 All of them share the third row and the fourth row of sub-pixels 21 in the sub-pixel array.

In an optional embodiment of the present invention, in a display unit formed for every three rows and four columns of sub-pixels, the luminance distribution coefficient of the sub-pixels 21 in the middle two columns is equal to the luminance of the two columns of sub-pixels 21 in the two sides. twice the partition coefficient. Wherein, the luminance distribution coefficient refers to the weight of luminance assigned to each sub-pixel in each display unit sharing the sub-pixel. Please refer to FIG. 4 , which shows a schematic diagram of the relationship between brightness distribution coefficients among sub-pixels in a display unit of a liquid crystal display panel provided by an embodiment of the present invention. In FIG. 4, a display unit is taken as an example for illustration. As shown in Figure 4, if the luminance distribution coefficients of the sub-pixels 21 in the first column of each display unit are respectively a, b, and c from top to bottom, then the luminance distribution coefficients of the sub-pixels 21 in the fourth column are from top to bottom The lower ones are a, b, and c respectively, and the brightness distribution coefficients of the sub-pixels 21 in the second and third columns are 2a, 2b, and 2c from top to bottom, respectively. Wherein, the brightness distribution coefficients a, b, and c may be equal. Each sub-pixel 21 of the display unit located in the middle of the liquid crystal display panel (except the display unit located at the edge of the liquid crystal display panel) needs to be shared by six display units, taking the sub-pixels in the third row and third column in FIG. 2 as For example, according to the relationship between the luminance distribution coefficients of each display unit above, the luminance distribution coefficient of the sub-pixel in the display unit 61 is 2c, the luminance distribution coefficient in the display unit 62 is c, and the luminance distribution coefficient in the display unit 63 is The coefficient is 2b, the brightness distribution coefficient in the display unit 64 is b, the brightness distribution coefficient in the display unit 65 is 2a, and the brightness distribution coefficient in the display unit 66 is a. If the maximum brightness of each sub-pixel 21 is x, then: each sub-pixel is assigned to the total brightness 3a+3b+3c=x in the six display units, therefore, each sub-pixel is assigned to the brightness in the six display units The relationship between the distribution coefficients a, b, c and their maximum brightness x satisfies a+b+c=x/3.

A driving array formed by a plurality of sub-pixel driving units is arranged on the surface of the first substrate 1 opposite to the second substrate 2 . Wherein, the sub-pixel driving units correspond to the sub-pixels 21 one by one, and the driving array can respectively control the first sub-pixel area 211 and the second sub-pixel area 212 .

Please refer to FIG. 5 and FIG. 6 together. FIG. 5 shows a schematic top view of the first substrate of the liquid crystal display panel of the present invention; FIG. 6 is a partial enlarged view of FIG. 5 .

As shown in FIG. 5, the first substrate 1 can be a flexible substrate such as a glass substrate or a plastic substrate; a plurality of first gate lines 10, a plurality of data lines 11 and a plurality of first gate lines arranged on the first substrate 1 The pole lines 10 and the data lines 11 define a plurality of sub-pixel driving units 12 . The structure of the sub-pixel driving unit 12 may be a single-domain structure or a double-domain structure, which is not limited in the present invention.

Wherein, the sub-pixel driving unit 12 includes a pixel electrode 120 and a first thin film transistor 121 . The pixel electrode 120 corresponds to the position of the first sub-pixel region 211 . The gate of the first thin film transistor 121 is electrically connected to the first gate line 10 , the source is electrically connected to the data line 11 , and the drain is electrically connected to the pixel electrode 120 .

The first substrate 1 also includes a plurality of second gate lines 13, a plurality of supplementary electrodes 14 and a plurality of second thin film transistors 15, and for the second thin film transistors 15, the gates thereof are connected to the corresponding second gate lines 13. The source is electrically connected to the corresponding data line 11 , and the drain is electrically connected to the corresponding supplementary electrode 14 .

Wherein, the supplementary electrode 14 is arranged between the sub-pixel electrodes 120, corresponding to the position of the black matrix 22 (see FIG. 1), that is to say, in the direction perpendicular to the first substrate 1, the black matrix 22 is on the first substrate 1 1 covers the projection of the supplementary electrode 14, which at least partially overlaps with the projection of the data line 11. The at least partial overlap includes partial overlap and complete overlap, wherein, when the supplementary electrode 14 and the data line 11 are misaligned, the projection of a part of the supplementary electrode 14 overlaps with the projection of the data line 11; the projection of the supplementary electrode 14 When completely overlapping with the projection of the data line 11, the width of the supplementary electrode 14 in the extending direction of the first gate line 10 (corresponding to the row direction in FIG. 2 above) is larger or smaller than that of the data line 11 extending in the first gate line 10 In this case, the projection of the data line 11 completely covers the projection of the supplementary electrode 14 , or the projection of the supplementary electrode 14 completely covers the projection of the data line 11 .

In this embodiment, the first gate line 10 is electrically connected to a first control circuit (not shown in the figure), and the first control circuit inputs a first control signal to the first gate line 10, since the first gate line 10 is electrically connected to the gate of the first thin film transistor 121 , therefore, the high level or low level of the first control signal can control the first thin film transistor 121 to be turned on or off. When the first control circuit controls the first thin film transistor 121 to turn on, the source and drain of the first thin film transistor 121 are turned on, and the driving signal in the data line 11 electrically connected to the source of the first thin film transistor 121 is transmitted to the pixel electrode 120 , providing a voltage for driving liquid crystal to the pixel electrode 120 .

The second gate line 13 is electrically connected to a second control circuit (not shown in the figure), and the second control circuit inputs a second control signal to the second gate line 13. Since the second gate line 13 and the second thin film The gate of the transistor 15 is electrically connected, therefore, the second control circuit can control the second thin film transistor to be turned on or off through the second control signal. When the second control circuit controls the second thin film transistor 15 to turn on, the source and drain of the second thin film transistor 15 are turned on, and the driving signal in the data line 11 is transmitted to the supplementary electrode 14 through the source and drain, which is the supplementary electrode. 14 provides the voltage to drive the liquid crystal.

Optionally, by adjusting the input timing of the first control signal and the second control signal, the control signals can be respectively provided to the pixel electrode 120 and the supplementary electrode 14, so as to control the area corresponding to the first sub-pixel area 211 and the second sub-pixel area respectively. 212 corresponds to the inversion of the liquid crystal in the region, thereby controlling the light emission of the first sub-pixel region 211 and the second sub-pixel region 212 .

Certainly, a common electrode 124 is also provided on the first substrate 1, and the common electrode 124 is provided correspondingly to a plurality of sub-pixel driving units 12 to provide a common voltage for the sub-pixel driving units 12, and pass the voltage between the common electrode 124 and the pixel electrode 120. The difference is used to drive the inversion of the liquid crystal between the pixel electrode 120 and the first sub-pixel region 211 . Similarly, the voltage difference between the common electrode 124 and the supplementary electrode 14 can drive the inversion of the liquid crystal between the supplementary electrode 14 and the second sub-pixel region 212, thereby effectively utilizing the liquid crystal between the pixel electrodes 120 and effectively improving the aperture. rate and penetration.

In this embodiment, since the pixel electrode 120 and the supplementary electrode 14 are respectively driven by different control circuits, the light emitting time of the first sub-pixel region 211 and the second sub-pixel region 212 can be controlled separately. In order to make the liquid crystal display panel light up the second sub-pixel region 212 when there is no color saturation attenuation or the color saturation attenuation is within an acceptable range, in an optional embodiment of the present invention, the liquid crystal display panel A detection module (not shown in the figure) is also included, and the detection module is used to detect the brightness of all the first sub-pixel regions 211 on the entire liquid crystal display panel. When the predetermined condition is met, the supplementary electrode 14 is driven to make the second sub-pixel region 212 emit light. To this end, the present invention also provides a preferred driving method, as shown in FIG. 10 .

In order to save substrate space, the first thin film transistor 121 and the second thin film transistor 15 can be arranged in a J shape, and at the same time, the first gate line 10 and the second gate line 13 can be insulated and arranged in parallel. Based on this, the gate of the first thin film transistor 121 and the gate of the second thin film transistor 15 can be arranged on the same layer, and the source and drain of the first thin film transistor 121 and the source and drain of the second thin film transistor 15 are also Can be set on the same layer.

Optionally, the first thin film transistor 121 in this embodiment is a double-gate thin film transistor, and the second thin film transistor 15 is a single-gate thin film transistor. Referring to FIG. 7 , FIG. 7 is an enlarged view of the first thin film transistor 121 and the second thin film transistor 15 . The drain 1212 of the first thin film transistor 121 is electrically connected to the pixel electrode 120, and the first gate 1210 and the second gate 1211 of the first thin film transistor 121 are electrically connected to the first gate line 10. Optionally, the first gate The electrode 1210 and the second gate 1211 are two parts where the first gate line 10 and the active layer 123 overlap respectively; the source of the first thin film transistor 121 and the source of the second thin film transistor 15 are the same source, that is, the source electrode 152, the source electrode 152 is electrically connected to the data line 11; the gate 150 of the second thin film transistor 15 is electrically connected to the second gate line 13, and optionally, the gate 150 is the second gate line 13 and the active In the overlapping portion of the layers 123 , the drain 151 of the second thin film transistor 15 is electrically connected to the supplementary electrode 14 .

Referring to FIG. 8, FIG. 8 is a schematic cross-sectional structure diagram of the sub-pixel driving unit in FIG. 7 along the aa' direction. The surface of the first substrate 1 has a buffer layer 1231, and the active layer 123 and gate dielectric layer 1230 are sequentially located on the buffer layer 1231. , the second gate 1211, the gate insulating layer 1214, the first insulating layer 1215, the common electrode 124, the second insulating layer 1216 and the pixel electrode 120, wherein the pixel electrode 120 is electrically connected to the drain 1212 through the first via hole 1213, The drain 1212 is located between the first insulating layer 1215 and the gate insulating layer 1214, and the drain 1212 is electrically connected to the active layer 123 through the gate insulating layer 1214 and the gate dielectric layer 1230, and the first insulating layer 1215 is used to isolate the common electrode 124 and the drain electrode 1212 , the second insulating layer 1216 is used to isolate the common electrode 124 from the pixel electrode 120 .

Referring to FIG. 9, FIG. 9 is a schematic cross-sectional structure diagram of the sub-pixel driving unit in FIG. The first gate 1210 and the gate 150, the gate insulating layer 1214, the first insulating layer 1215, the common electrode 124, the second insulating layer 1216 and the supplementary electrode 14, wherein the supplementary electrode 14 passes through the second via hole 140 and the drain 151 Electrically connected, the drain 151 is located between the first insulating layer 1215 and the gate insulating layer 1214, and is electrically connected to the active layer 123 through the gate insulating layer 1214 and the gate dielectric layer 1230. In addition, the first insulating layer 1215 and the gate insulating layer There is also a source electrode 152 between 1214, and the source electrode 152 is electrically connected to the data line 11. Optionally, the source electrode 152 is the overlapping part of the data line 11 and the active layer 123, and the source electrode 152 penetrates the gate insulating layer 1214 and the The gate dielectric layer 1230 is electrically connected to the active layer 123 .

In this embodiment, the supplementary electrode 14 and the pixel electrode 120 are located on the same layer. Of course, the present invention is not limited thereto. In other embodiments, the supplementary electrode 14 and the pixel electrode 120 may be located on different layers, as long as the supplementary electrode 14 and the common electrode The voltage difference between 124 can drive the flipping of the liquid crystal.

Specifically, the supplementary electrode 14 can be a single strip electrode, or a strip electrode with double bifurcations, or a single strip electrode with a hollow pattern. The present invention is not limited to the specific shape of the hollow pattern. To limit.

In this embodiment, in order to improve the transmittance of the pixel electrode, the pixel electrode 120 can be set as a pixel electrode with slits. Referring to FIG. 5 and FIG. 6, the pixel electrode 120 includes a first strip electrode 1201, a second strip electrode 1202, the third strip electrode 1203, the first slit 1204 between the first strip electrode 1201 and the second strip electrode 1202, the first slit between the second strip electrode 1202 and the third strip electrode 1203 1205 for the second engraved seam.

It should be noted that the structure of the drive array shown in FIGS. 5 to 9 above is a way of controlling the light emission of the first sub-pixel region and the second sub-pixel region in the present invention, but is not limited thereto. In some embodiments, some other driving arrays capable of separately controlling the first sub-pixel region and the second sub-pixel region can be implemented in combination with the sub-pixel arrangement structure in this embodiment, which will not be repeated here.

Another embodiment of the present invention also provides a liquid crystal display device, which includes the liquid crystal display panel provided in the above embodiment.

In the liquid crystal display panel and liquid crystal display device provided in this embodiment, each sub-pixel includes a first sub-pixel area and a second sub-pixel area, wherein the first sub-pixel area is a colored sub-pixel area, and the second sub-pixel area is a white sub-pixel area. In the pixel area, the aperture ratio and transmittance are improved through the light emission of the white sub-pixel area, and through the arrangement and rendering of the sub-pixels, a high PPI display effect is obtained with a lower actual PPI design, which reduces the difficulty of manufacturing high PPI display panels. save costs. In addition, the arrangement of the white sub-pixel area can also increase the distance between adjacent colored sub-pixel areas, thereby improving the alignment color shift. In addition, the present invention also controls the light emission of the first sub-pixel area and the second sub-pixel area respectively through the driving array formed by the sub-pixel driving unit, so as to avoid the color saturation that occurs when the second sub-pixel area emits light simultaneously with the first sub-pixel area. The attenuation is serious, and the brightness of the LCD panel is improved while ensuring the color saturation.

Please refer to FIG. 10 , which shows a flowchart of the driving method of the liquid crystal display panel of the present invention. Specifically, the present invention also provides a driving method of a liquid crystal display panel. The driving method of the liquid crystal display panel comprises the following steps:

Step S100: driving the sub-pixel driving unit in the array to drive the first sub-pixel region of the sub-pixel to emit light. In an embodiment of the present invention, driving the first sub-pixel regions of all sub-pixels to emit light is controlled by the first control circuit. After the first thin film transistor is turned on, the driving signal in the data line is transmitted to the pixel electrode to provide the pixel electrode with driving liquid crystal. achieved in the form of voltage.

Step S200: the detection module detects the brightness of all the first sub-pixel regions on the entire liquid crystal display panel.

Step S300: driving the sub-pixel driving unit in the array to drive the second sub-pixel region of the sub-pixel to emit light. Optionally, when the brightness of all red sub-pixel regions R on the liquid crystal display panel is equal to the brightness of all green sub-pixel regions G and all blue sub-pixel regions B, the driving array drives the second sub-pixel regions to emit light. Optionally, the driving voltage of the second sub-pixel area is the same as that of the first sub-pixel area.

The driving method of the above-mentioned liquid crystal display panel can increase the brightness of the liquid crystal display panel without attenuation of the color saturation of the liquid crystal display panel.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention belongs can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope defined in the claims.

Claims (21)

1. a display panels, is characterized in that, comprising:

The first substrate be oppositely arranged and second substrate;

The surface that described first substrate is relative with described second substrate is provided with the driving array that multiple sub-pixel driver element is formed;

The surface that described second substrate is relative with described first substrate is provided with the array of sub-pixels that multiple sub-pixel is formed, and comprises black matrix between each described sub-pixel, described sub-pixel and described sub-pixel driver element one_to_one corresponding, and each described sub-pixel comprises:

First sub-pixel area, described first sub-pixel area is colored sub-pixels district;

Second sub-pixel area, described second sub-pixel area is white sub-pixels district;

Described driving array controls described first sub-pixel area and described second sub-pixel area respectively:

Layer of liquid crystal molecule, is arranged between described first substrate and described second substrate.

2. display panels as claimed in claim 1, it is characterized in that, in each described sub-pixel, the ratio of the second sub-pixel area area occupied and described first sub-pixel area area occupied is less than or equal to 1/3.

3. display panels as claimed in claim 1, it is characterized in that, the shape of described sub-pixel is rectangle, and multiple described sub-pixel is matrix arrangement.

4. display panels as claimed in claim 3, it is characterized in that, described second sub-pixel area in each described sub-pixel is arranged at the both sides of described first sub-pixel area respectively.

5. display panels as claimed in claim 4, is characterized in that, in same sub-pixel, be positioned at the area equation of described second sub-pixel area of described first both sides, sub-pixel area.

6. display panels as claimed in claim 4, it is characterized in that, in same sub-pixel, the area being positioned at the second sub-pixel area of described first side, sub-pixel area is greater than the area of the second sub-pixel area of its opposite side.

7. display panels as claimed in claim 1, it is characterized in that, described first sub-pixel area is any one in red sub-pixel district, green sub-pixels district and blue subpixels district.

8. display panels as claimed in claim 7, it is characterized in that, described red sub-pixel district is provided with Red lightscreening plate, and described green sub-pixels district is provided with green color filter and described blue subpixels district is provided with blue color filter.

9. display panels as claimed in claim 7, it is characterized in that, in every a line of described array of sub-pixels, the first sub-pixel area of three sub-pixels of arbitrary neighborhood is the permutation and combination in red sub-pixel district, green sub-pixels district and blue subpixels district, and in every adjacent rows, the first sub-pixel area of same row two sub-pixels is different.

10. display panels as claimed in claim 9, it is characterized in that, in described array of sub-pixels often the first sub-pixel area of row sub-pixel respectively with red sub-pixel district, green sub-pixels district, blue subpixels district cycle arrangement, and the first sub-pixel area color of the sub-pixel of same row is identical in odd-numbered line, in even number line, the first sub-pixel area color of the sub-pixel of same row is identical.

11. display panels as claimed in claim 1, it is characterized in that, in described array of sub-pixels, the arrangement of subpixels of even number line offsets to one side in the row direction relative to the arrangement of subpixels of odd-numbered line.

12. display panels as claimed in claim 11, is characterized in that, the distance of described skew is less than or equal to 3/4 of the spacing distance of each sub-pixel on offset direction.

13. display panels as claimed in claim 9, it is characterized in that, in described array of sub-pixels, the sub-pixel of every three rows and four columns forms a display unit, and every two laterally adjacent display units share two row sub-pixels, every two longitudinally adjacent display units share two row sub-pixels.

14. display panels as claimed in claim 10, it is characterized in that, in described array of sub-pixels, the sub-pixel of every three rows and four columns forms a display unit, and every two laterally adjacent display units share two row sub-pixels, every two longitudinally adjacent display units share two row sub-pixels, wherein, in each display unit, the luminance distribution coefficient being positioned at the sub-pixel of middle two row is the twice of the luminance distribution coefficient of the two row sub-pixels being positioned at both sides.

15. display panels according to any one of claim 1 to 14, it is characterized in that, described driving array comprises:

The multiple sub-pixel driver elements being arranged at many first grid polar curves on described first substrate, a plurality of data lines and being limited by described first grid polar curve and data line; Described sub-pixel driver element comprises pixel electrode and the first film transistor; Described pixel electrode is corresponding with the position of described first sub-pixel area, and the grid of described the first film transistor is electrically connected with described first grid polar curve, and source electrode is electrically connected with described data line, and drain electrode is electrically connected with described pixel electrode;

Be arranged at many second gate lines on described first substrate, multiple supplementary electrode and multiple second thin film transistor (TFT); Described supplementary electrode is arranged between described pixel electrode, and corresponding with the position of described black matrix; The grid of the second thin film transistor (TFT) described in each is all electrically connected with corresponding described second gate line, and source electrode is electrically connected with corresponding described data line, and drain electrode is electrically connected with corresponding described supplementary electrode;

The first control circuit be electrically connected with described first grid polar curve, described first control circuit, by controlling unlatching or the closedown of described the first film transistor, controls the voltage of described pixel electrode;

The second control circuit be electrically connected with described second gate line, described second control circuit, by controlling unlatching or the closedown of described second thin film transistor (TFT), controls the voltage of described supplementary electrode.

16. display panels as claimed in claim 15, is characterized in that, described in described the first film transistor AND gate, the second thin film transistor (TFT) forms J-shaped; Described first grid polar curve and described second gate line insulate and be arranged in parallel.

17. display panels as claimed in claim 1, it is characterized in that, described display panels also comprises detection module, and described detection module detects the brightness of all first sub-pixel area on whole described display panels.

18. 1 kinds of liquid crystal indicators, is characterized in that, comprise the display panels according to any one of claim 1 to 17.

19. 1 kinds of driving methods, for display panels as claimed in claim 1, is characterized in that, comprise the steps:

Drive the first sub-pixel area of the sub-pixel drive unit drives sub-pixel in array luminous;

Detection module detects the brightness of all first sub-pixel area on whole described display panels;

Drive the second sub-pixel area of the sub-pixel drive unit drives sub-pixel in array luminous.

20. driving methods as claimed in claim 19, it is characterized in that, when the brightness in all red sub-pixel districts on described display panels is equal with the brightness in all green sub-pixels districts, all blue subpixels districts, drive sub-pixel drive unit drives second sub-pixel area in array luminous.

The driving method of 21. display panels as claimed in claim 19, is characterized in that, the driving voltage of described second sub-pixel area is identical with the driving voltage of described first sub-pixel area.