CN115047646A

CN115047646A - Display screen and display device

Info

Publication number: CN115047646A
Application number: CN202210553379.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Beijing Ivisual 3D Technology Co Ltd
Current assignee: Beijing Ivisual 3D Technology Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-13
Also published as: WO2023221887A1; TW202401094A

Abstract

The application relates to the technical field of optics, and discloses a display screen, includes: a plurality of composite pixels; each composite pixel comprises a plurality of sub-pixels; each sub-pixel comprises short sides and long sides, wherein the short sides are arranged oppositely, and the long sides are arranged oppositely; in the composite pixel, the sub-pixels arranged in the direction in which the short sides extend have the same color; including a grating disposed over the plurality of composite pixels; the grating comprises a plurality of units which are arranged along the S direction by a period length D, wherein the period length D is the pitch of the grating, the direction along the length of the units is the T direction, and the S direction is vertical to the T direction; and an included angle between the T direction and the extending direction of the short side is theta. The display screen eliminates display crosstalk between sub-pixels with different primary colors, and improves the quality of 3D display images. The application also discloses a display device.

Description

Display screen and display device

Technical Field

The present application relates to the field of optical technology, and for example, to a display screen and a display device.

Background

As shown in fig. 1, in a conventional parallax barrier type naked-eye 3D display panel structure, a parallax barrier grating 1 is disposed on a 2D display panel, and in a pixel arrangement structure of the 2D display panel, R sub-pixels, G sub-pixels, and B sub-pixels are generally respectively designed to be rectangular, and sub-pixels arranged along an extending direction of a long side of the rectangle are of the same color.

In the naked eye 3D display scheme using the pixel arrangement structure, an included angle α between the grating axis direction and the extending direction of the long side of the rectangle is an acute angle, and is usually less than 26 degrees. The viewpoint arrangement direction is the extending direction of the short side of the rectangle. As shown in fig. 2, when the left eye position exactly corresponds to the center of the third sub-pixel and the right eye position exactly corresponds to the center of the sixth sub-pixel, the second to fourth sub-pixels display the left eye image content, and the fifth to seventh sub-pixels display the right eye image content, with minimal crosstalk. However, when the corresponding positions of the left and right eyes are shifted, as shown in fig. 3, the left eye position corresponds to the middle between the third sub-pixel and the fourth sub-pixel, and the right eye position corresponds to the middle between the sixth sub-pixel and the seventh sub-pixel, at this time, the light emitted by the fifth sub-pixel enters the left and right eyes at the same time, and as long as the R channel gray scale values of the left eye image and the right eye image are not consistent, the requirements of the left eye image and the right eye image on the R gray scale values cannot be met at the same time, and color crosstalk is certainly formed. And because the pixel colors in the arrangement direction of the viewpoints are different, the problem of color crosstalk correction by an algorithm needs to consider the gray scale values of three different colors at the same time, so that the calculation is complex, the effect is limited, and the mass production application of high-dynamic 3D display is limited.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a display screen and a display device, which are used for solving the color cast problem caused by crosstalk between different primary color sub-pixels in a traditional naked eye 3D display structure.

The display screen that this disclosed embodiment provided includes: a plurality of composite pixels;

each of the plurality of composite pixels comprises a plurality of sub-pixels;

each of the plurality of sub-pixels includes oppositely disposed short sides and oppositely disposed long sides, the short sides having a length shorter than the long sides;

in the composite pixel, the sub-pixels arranged along the direction in which the short sides extend have the same color;

the grating is arranged above the plurality of composite pixels; the grating comprises a plurality of units which are arranged along an S direction by a period length D, wherein the period length D is the pitch of the grating, the direction along the length of the units is a T direction, and the S direction is vertical to the T direction; and an included angle between the T direction and the extending direction of the short side is theta.

In some embodiments, the color of the sub-pixels arranged in the direction in which the long side extends is different in the composite pixel.

In some embodiments, the θ is greater than 50 °, and less than 90 °.

In some embodiments, when the grating is a lenticular lens grating, the lenticular lens grating includes a plurality of lenticular lenses arranged along the S direction with a period length D, the pitch of the lenticular lens grating is D, and the direction of the axis of the lenticular lens is the T direction.

In some embodiments, when the grating is a slit grating, the slit grating includes a plurality of slit units arranged in a period length D in an S direction, the slit units include a light shielding portion and a light transmitting portion, a pitch of the slit grating is D, and a direction extending along a length of the light transmitting portion is a T direction.

In some embodiments, the composite pixel comprises three rows and i columns of sub-pixels, i being an integer greater than or equal to 5.

In some embodiments, i is any one integer selected from 6,7,8,9, 10.

In some embodiments, the resolution of the display screen is M × N, the display screen comprising M × N composite pixels, wherein M is greater than N, the direction along which the short side extends comprising M composite pixels.

In some embodiments, D ═ px i sin θ, a direction in which the short sides of the subpixels extend is a row direction, a direction in which the long sides of the subpixels extend is a column direction, a center distance between two subpixels adjacent in the row direction is px, and a center distance between two subpixels adjacent in the column direction is py.

In some embodiments, px i ═ 3 py.

In some embodiments, the sub-pixels of two adjacent rows are aligned.

The embodiment of the present disclosure provides a display device, which includes any one of the above display screens.

The display screen and the display device provided by the embodiment of the disclosure can realize the following technical effects:

in the application, the colors of the sub-pixels arranged along the direction in which the short sides extend are the same, so that the arrangement direction of the viewpoints is also along the direction in which the short sides extend, and therefore, when the generated color crosstalk needs to be corrected, only the sub-pixels of one color need to be considered, the calculation can be simplified, the color crosstalk can be well removed, and the effect is remarkable.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

At least one embodiment is illustrated by the accompanying drawings, which correspond to the accompanying drawings, and which do not form a limitation on the embodiment, wherein elements having the same reference numeral designations are shown as similar elements, and which are not to scale, and wherein:

fig. 1 is a schematic structural diagram of a display screen corresponding to the background art;

FIG. 2 is a schematic diagram of a display screen viewed by human eyes corresponding to the background art;

FIG. 3 is a schematic diagram of a display screen viewed by human eyes corresponding to the background art;

FIG. 4 is a schematic structural diagram of a display screen provided by an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a display screen viewed by human eyes provided by the embodiment of the disclosure;

FIG. 6 is a schematic structural diagram of a slit grating provided in an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a sub-pixel provided in an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a display screen divided into rectangles according to an embodiment of the present disclosure;

fig. 9A is a schematic structural diagram of a sub-pixel provided in an embodiment of the disclosure;

fig. 9B is a schematic structural diagram of another sub-pixel provided in the embodiment of the present disclosure;

fig. 9C is a schematic structural diagram of another sub-pixel provided in the embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a display device provided in an embodiment of the present disclosure.

Reference numerals:

1: a grating; 2: a pixel; 10: a display screen; 101: a composite pixel; 102: a grating; 103: a unit; 104: a light shielding portion; 105: a light-transmitting portion; 106: a sub-pixel; 107: a light emitting portion; 108: a non-light emitting portion; l1: scanning a line; l2: a signal line; 20: display device

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, at least one embodiment may be practiced without these specific details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

As shown in fig. 4, the present disclosure provides a display screen 10, including: a plurality of composite pixels 101;

each of the plurality of composite pixels 101 includes a plurality of sub-pixels 106;

each sub-pixel 106 of the plurality of sub-pixels 106 comprises oppositely arranged short sides and oppositely arranged long sides, and the length of the short sides is shorter than that of the long sides;

in the composite pixel 101, the sub-pixels 106 arranged in the direction in which the short sides extend are the same in color;

further comprising a grating 102 disposed over the plurality of composite pixels 101; the grating 102 comprises a plurality of cells 103 arranged along the S direction with a period length D, the period length D being the pitch of the grating 102, and the direction along the length of the cells 103 being the T direction, wherein the S direction is perpendicular to the T direction; the angle between the T direction and the direction in which the short sides extend is theta.

In some embodiments, each composite pixel is used to display one complete pixel of the 3D display image, e.g., when the 3D display image contains left and right eye images corresponding to the left and right eyes, each composite pixel corresponds to one pixel of the left and right eye images at the same pixel coordinate position.

In some embodiments, as shown in fig. 4, one direction parallel to the extending direction of the short side of the sub-pixel is the X direction, and one direction parallel to the extending direction of the long side of the sub-pixel is the Y direction. Optionally, the X direction is a row direction and the Y direction is a column direction. Alternatively, in the composite pixel 101, the sub-pixels 106 arranged in the direction in which the short sides extend are the same color. Alternatively, in the composite pixel 101, the sub-pixels 106 arranged in the direction in which the long sides extend are different in color. Alternatively, the sub-pixels 106 arranged in the X direction may be the same color, and the sub-pixels 106 arranged in the Y direction may be different colors. Alternatively, the direction in which the short sides extend is the direction in which the viewpoints are arranged, that is, the direction in which the short sides extend, and any two adjacent sub-pixels belong to different viewpoints. Alternatively, the X direction is a direction in which viewpoints are arranged.

In some embodiments, as shown in FIG. 4, where the dashed box encircled by point E, A, H, F represents a composite pixel 101, display screen 10 includes a plurality of rows and columns of composite pixels 101 arranged in an array.

In some embodiments, each composite pixel 101 includes a plurality of rows and columns of subpixels 106 arranged in an array. In fig. 4, it is exemplarily shown that the composite pixel 101 comprises 3 rows and 6 columns of sub-pixels 106. In actual practice, however, composite pixel 101 may alternatively comprise 3 rows and 5 columns of subpixels 106. Optionally, composite pixel 101 may include 3 rows and 8 columns of subpixels 106. Optionally, the composite pixel 101 may include 3 rows and 10 columns of sub-pixels 106, and the like, which is not specifically limited in this application as long as the number of sub-pixels 106 included in the composite pixel 101 in the row direction (also referred to as i, or referred to as the number of columns of sub-pixels 106 in the composite pixel 101) is an integer greater than or equal to 5.

In some embodiments, two adjacent rows of composite pixels 101 are aligned. Optionally, the sub-pixels 106 of two adjacent rows are aligned.

In some embodiments, composite pixel 101 includes three rows and i columns of subpixels 106, i being an integer greater than or equal to 5. Optionally, i is any one integer selected from 6,7,8,9 and 10. Alternatively, the color of the sub-pixels 106 in the row direction is the same, and the color of the sub-pixels 106 in the column direction is different. Alternatively, as shown in fig. 4, in one composite pixel 101, the color of the first row of sub-pixels 106 may be one of red, green or blue, the color of the second row of sub-pixels 106 is one of the colors different from the color of the first row of sub-pixels 106 and selected from red, green or blue, and the color of the third row of sub-pixels 106 is one of the colors different from the color of the first row of sub-pixels 106 and the color of the second row of sub-pixels 106 and selected from red, green or blue. Optionally, the color of the first row of sub-pixels 106 is red, the color of the second row of sub-pixels 106 is green, and the color of the third row of sub-pixels 106 is blue.

In some embodiments, D ═ px × i × sin θ, a direction in which short sides of the sub-pixels 106 extend is a row direction, a direction in which long sides of the sub-pixels 106 extend is a column direction, a center-to-center distance between two sub-pixels 106 adjacent in the row direction is px, a center-to-center distance between two sub-pixels 106 adjacent in the column direction is py, and i is the number of columns of the sub-pixels 106 included in one composite pixel 101. Alternatively, px is 20.9 ± 0.1 um.

In some embodiments, the angle between the T direction and the direction in which the short sides extend is θ, taking an acute angle. Optionally, θ is greater than 50 ° and less than 90 °. Optionally, θ is greater than 74 ° and less than 86 °. Optionally, θ is greater than 75 ° and less than 77 °. Optionally, θ is greater than 83 ° and less than 86 °.

In some embodiments, the composite pixel 101 is substantially square. Optionally, px i ═ 3 × py.

In the present application, the grating 102 may move left and right relative to the composite pixel 101 along the extending direction of the short side of the sub-pixel, and it is within the protection scope of the present application that the grating 102 moves to any position of the composite pixel 101.

In the present application, the arrangement direction of the viewpoints is also made to be the short-side extending direction by making the colors of the sub-pixels 106 arranged in the direction in which the short sides of the sub-pixels extend the same, and therefore, when considering how the primary colors of one sub-pixel in one composite pixel are displayed, only one primary color needs to be considered. Optionally, taking any one red sub-pixel in the composite pixel as an example, when determining the display gray scale of any one red sub-pixel, only the primary color of red needs to be considered, and the influence caused by two primary colors of green and blue does not need to be considered, so that the rendering calculation in 3D display can be greatly simplified, and the crosstalk between sub-pixels of different primary colors is structurally eliminated, thereby significantly improving the image quality of 3D display.

As shown in fig. 5, it can be seen that the left eye position corresponds to the middle between the third sub-pixel 106 and the fourth sub-pixel 106, and the right eye position corresponds to the middle between the sixth sub-pixel 106 and the seventh sub-pixel 106, although the light emitted by the fifth sub-pixel 106 enters the left eye and the right eye simultaneously, when the gray-scale value to be displayed by the fifth sub-pixel 106 is considered, since the colors of the sub-pixels 106 arranged along the extending direction of the short side are the same, it is only necessary to consider simple compensation for the channel intensity (R channel intensity, G channel intensity, or B channel intensity) of one color, and it is not necessary to consider the influence of the three channel colors on the fifth sub-pixel 106 at the same time, so that the calculation can be simplified, and the effect of removing crosstalk is significant.

In some embodiments, the grating 102 is disposed on the composite pixels 101 arranged in an array. As shown in fig. 4, grating 102 includes a plurality of cells 103, and in fig. 4, grating 102 is illustratively shown to include 3 cells 103. Alternatively, the pitch of the grating 102 is D, i.e., the width of the cells 103 in the S direction is D, the plurality of cells 103 are arranged in the S direction with a period length D, the direction extending along the length of the cells 103 is the T direction, and the S direction is perpendicular to the T direction.

In some embodiments, the grating 102 may include a lenticular lens grating 102 or a slit grating 102, and fig. 4 illustrates the grating 102 as the lenticular lens grating 102, and optionally, the grating 102 may also be the slit grating 102.

In some embodiments, as shown in fig. 4, when the grating 102 is a lenticular lens grating 102, the lenticular lens grating 102 includes a plurality of lenticular lenses arranged along the S direction with a period length D, the pitch of the lenticular lens grating 102 is D, that is, the width of the lenticular lenses along the S direction is D, and the direction of the axes of the lenticular lenses is the T direction.

As shown in fig. 6, in some embodiments, when the grating 102 is a slit grating 102, the slit grating 102 includes a plurality of slit units 103 arranged in the S direction with a period length D, the slit unit 103 includes a light shielding portion 104 and a light transmitting portion 105, and the pitch of the slit grating 102 is D, that is, the width of the slit unit 103 in the S direction is D, and the direction extending along the length of the light transmitting portion 105 is the T direction. Alternatively, the widths of the light shielding portion 104 and the light transmitting portion 105 in the S direction may be the same or different, and the sum of the widths may be D.

In some embodiments, the 3D resolution of the display screen 10 is M × N, i.e. the display screen 10 comprises M × N composite pixels 101, M being larger than N, wherein the direction along which the short sides extend comprises M composite pixels. Optionally, the direction along which the long side extends includes N composite pixels.

In some embodiments, as shown in fig. 4 and 7, the sub-pixel includes a light emitting portion 107 and a surrounding non-light emitting portion 108. Alternatively, the light emitting portion 107 may be a regular shape, as shown in fig. 4, which is rectangular. Alternatively, the light emitting portion 107 may be irregularly shaped, as shown in fig. 7, the light emitting portion 107 being a trapezoid. Alternatively, the shapes of the light emitting parts 107 may be the same or different. Optionally, the shape of the sub-pixel is a regular rectangle including long sides and short sides.

As shown in fig. 8, the sub-pixels in the present application refer to a display screen completely divided into a plurality of rectangles arranged in an array and identical to each other. Optionally, each rectangle represents a sub-pixel. Optionally, adjacent rectangles share a side. Optionally, there is no gap between adjacent rectangles. Alternatively, the sub-pixel includes a light emitting portion and a surrounding non-light emitting portion. Alternatively, the light emitting portion is located in a rectangle. Alternatively, the rectangles are artificially divided, and in essence, as long as the display screen is completely divided into the same rectangles arranged in an array, the light emitting portions are located in the rectangles; and the same color display panel of the sub-pixels arranged in the direction in which the short sides of the rectangle extend is within the scope of the present application. Alternatively, each sub-pixel includes a light emitting portion that is a minimum light emitting unit that can be independently driven. Alternatively, the minimum light emitting unit that can be independently driven refers to a light emitting unit connected to the same scanning line and the same signal line. Alternatively, as shown in fig. 9A, the minimum light emitting unit that can be independently driven may include one entire light emitting region. Alternatively, as shown in fig. 9B and 9C, the minimum light-emitting unit that can be independently driven may include two or more regions that emit light simultaneously.

As shown in fig. 9, the embodiment of the present disclosure further provides a display device 20, which includes any one of the display screens 10 described above.

In some embodiments, the display device 20 may also include other components for supporting the proper operation of the display device 20, such as: at least one of a communication interface, a frame, a control circuit, and the like.

In some embodiments, the display device 20 may be a display terminal or other device capable of displaying, for example: televisions, projectors, cell phones, desktop computers, tablet computers, notebook computers, and the like.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It is clear to those skilled in the art that, for convenience and brevity of description, the working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit may be merely a division of a logical function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the drawings, the width, length, thickness, etc. of structures such as elements or layers may be exaggerated for clarity and descriptive purposes. When an element or layer is referred to as being "disposed on" (or "mounted on," "laid on," "attached to," "coated on," or the like) another element or layer, the element or layer may be directly "disposed on" or "over" the other element or layer, or intervening elements or layers may be present, or even partially embedded in the other element or layer.

Claims

1. A display screen, comprising: a plurality of composite pixels;

each of the plurality of composite pixels comprises a plurality of sub-pixels;

2. The display panel according to claim 1, wherein the sub-pixels arranged in the direction in which the long side extends are different in color in the composite pixel.

3. A display screen in accordance with claim 1, wherein θ is greater than 50 ° and less than 90 °.

4. The display screen of claim 1, wherein when the grating is a lenticular lens grating, the lenticular lens grating comprises a plurality of lenticular lenses arranged along the S direction with a period length D, the pitch of the lenticular lens grating is D, and the direction of the axes of the lenticular lenses is the T direction.

5. A display screen according to claim 1, wherein when the grating is a slit grating, the slit grating comprises a plurality of slit units arranged with a period length D in the S direction, the slit units comprising a light shielding portion and a light transmitting portion, the pitch of the slit grating is D, and the direction extending along the length of the light transmitting portion is the T direction.

6. A display screen in accordance with claim 1, wherein the composite pixel comprises three rows and i columns of sub-pixels, i being an integer greater than or equal to 5.

7. The display screen of claim 6, wherein i is any one integer selected from 6,7,8,9 and 10.

8. A display screen according to claim 1, wherein the display screen has a resolution of mxn and comprises mxn composite pixels, wherein M is greater than N and wherein M composite pixels are included along the direction of extension of the short side.

9. The display panel according to claim 6, wherein D ═ px × i sin θ, a direction in which the short sides of the subpixels extend is a row direction, a direction in which the long sides of the subpixels extend is a column direction, a center distance between two subpixels adjacent in the row direction is px, and a center distance between two subpixels adjacent in the column direction is py.

10. The display screen of claim 9, wherein px i py.

11. A display screen in accordance with claim 9, wherein the sub-pixels of two adjacent rows are aligned.

12. A display device characterized by comprising a display screen according to any one of claims 1 to 11.