CN112086017B - Display panel, display device and preparation method of display panel - Google Patents

Abstract

Embodiments of the present application provide a display panel, a display device, and a method for manufacturing the display panel. The display panel includes a display area, the display area includes a hole area, and the display panel also includes: a base layer; a light-shielding structure disposed on one side of the base layer, the light-shielding structure has an opening, and the light-shielding structure corresponds to a peripheral area in the hole area; Along the radial direction of the hole region, the first dimension of the light-shielding structure from the inner periphery to the outer periphery is smaller than the design frame value of the hole region. The embodiment of the present application can meet the lamination requirement of a smaller design frame value of the frame, realize the design of the AA Hole narrow frame, and reduce the cost of the display panel Panle.

Description

Display panel, display device and method for manufacturing display panel

technical field

The present application relates to the field of display technology, and in particular, the present application relates to a display panel, a display device, and a method for preparing the display panel.

Background technique

The display screen is moving towards the full-screen era. In order to increase the screen-to-body ratio, most products are designed as AA (Active Area effective display area) Hole (hole) products. The camera punches a hole in the AA area to increase the screen-to-body ratio.

At present, the width of the frame of AA Hole is relatively wide. In order to reduce the frame, each process section is being adjusted. Among them, there are related problems in the beam bonding accuracy of the light-shielding structure. The beam bonding accuracy is low, for example, at 0.6mm (millimeter)- 1.0mm, making it difficult to reduce the frame of the hole area.

Contents of the invention

Aiming at the shortcomings of the existing methods, the present application proposes a display panel, a display device, and a method for manufacturing the display panel, so as to solve the technical problem in the prior art that the lamination accuracy of the light-shielding structure is low and the frame of the hole area is large.

In the first aspect, the embodiment of the present application provides a display panel, including a display area, the display area includes a hole area, and the display panel further includes:

basal layer;

The light-shielding structure is arranged on one side of the base layer, the light-shielding structure has an opening, and the light-shielding structure corresponds to the peripheral area in the hole area; along the radial direction of the hole area, the first dimension of the light-shielding structure from the inner periphery to the outer periphery is smaller than the hole area The design border value for .

In a possible implementation manner, the light-shielding structure includes a black adhesive layer or a light-absorbing adhesive layer corresponding to the peripheral area in the hole area;

The inner perimeter of the black or light absorbing subbing layer forms the boundary of the opening.

In a possible implementation manner, the light-shielding structure further includes: a transparent adhesive layer disposed on one side of the base layer, and the transparent adhesive layer corresponds to the peripheral area in the hole area;

The black adhesive layer or the light-absorbing adhesive layer is correspondingly arranged on the side of the transparent adhesive layer away from the base layer.

In a possible implementation manner, along a direction perpendicular to the base layer, the height of the side of the light-shielding structure away from the base layer is greater than the height of the side of the pixel structure in the display area around the hole area away from the base layer.

In a possible implementation manner, the orthographic projection of the side of the light-shielding structure away from the base layer on the base layer is closer to the pixel structure than the side of the light-shielding structure closer to the base layer.

In a possible implementation, an encapsulation layer is provided on the side of the pixel structure away from the base layer;

The encapsulation layer surrounds the light shielding structure.

In a possible implementation manner, a flat layer and a touch layer are sequentially provided on a side of the encapsulation layer and the light-shielding structure away from the base layer.

In a possible implementation manner, the thickness of the light-shielding structure along a direction perpendicular to the base layer is 8 micrometers to 20 micrometers.

In a second aspect, an embodiment of the present application further provides a display device, including: the display panel of the first aspect.

In the third aspect, the embodiment of the present application also provides a method for manufacturing a display panel, which is applied to the display panel in the first aspect, including:

Printing a light-shielding glue structure on one side of the base layer and corresponding to the hole area of the display area of the display panel; the light-shielding glue structure has an initial opening;

The light-shielding glue structure is cured to obtain a light-shielding structure; the light-shielding structure has an opening, and the light-shielding structure corresponds to the peripheral area in the hole area, and along the radial direction of the hole area, the first dimension of the light-shielding structure from the inner periphery to the outer periphery is smaller than The design border value for the hole area.

In a possible implementation manner, a light-shielding glue structure is printed on one side of the base layer and corresponding to the hole area of the display area of the display panel, including:

printing a layer of transparent adhesive layer on one side of the base layer and corresponding to the hole area of the display area of the display panel;

On the side of the transparent adhesive layer away from the base layer and corresponding to the peripheral area in the hole area of the display area of the display panel, a black adhesive layer or a light-absorbing adhesive layer is printed; the black adhesive layer or the light-absorbing adhesive layer has an initial opening.

The beneficial technical effects brought by the technical solutions provided by the embodiments of the present application include:

In the embodiment of the present application, on one side of the base layer and corresponding to the hole area of the display area of the display panel, a light-shielding glue structure is printed, and then cured to obtain a light-shielding structure for blocking the light emitted by the pixel structure of the display area. structure. The preparation method of the embodiment of the present application can reduce the lamination accuracy requirements of the light-shielding structure, so that along the radial direction of the hole area, the first dimension of the light-shielding structure from the inner periphery to the outer periphery is smaller than the design frame value of the hole area, so as to meet the design of the frame Smaller bezel value fits the requirement, realizes the design of AA Hole narrow bezel, and reduces the cost of the display panel Panle.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and will become apparent from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic structural diagram of a display panel provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a state after printing a transparent adhesive layer 123 during the preparation process of a display panel provided by the embodiment of the present application;

FIG. 3 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another display panel provided by an embodiment of the present application;

FIG. 5 is a flow chart of a method for manufacturing a display panel provided by an embodiment of the present application.

Reference signs:

100 - display area;

110 - basal layer;

120-shading structure, 121-opening, 122-black adhesive layer, 123-transparent adhesive layer;

130-pixel structure;

140-encapsulation layer;

150 - flat layer;

160 - Touch layer.

Detailed ways

The present application is described in detail below, and examples of embodiments of the present application are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Also, detailed descriptions of known technologies will be omitted if they are not necessary to illustrate the features of the present application. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with their meaning in the context of the prior art, and unless specifically defined as herein, are not intended to be idealized or overly Formal meaning to explain.

Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the specification of the present application refers to the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The expression "and/or" used herein includes all or any elements and all combinations of one or more associated listed items.

The technical solution of the present application and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments.

An embodiment of the present application provides a display panel, as shown in FIG. 1 , the display panel includes a display area 100 including a hole area, and the display panel further includes: a base layer 110 and a light-shielding structure 120 .

The light-shielding structure 120 is arranged on one side of the base layer 110, the light-shielding structure 120 has an opening 121, and the light-shielding structure 120 corresponds to the peripheral area in the hole area; along the radial direction of the hole area, the light-shielding structure 120 points from the inner periphery to the second outer periphery. A size smaller than the design border value of the hole area. Optionally, the design frame value is not greater than 0.5mm (millimeter).

In the display panel of the embodiment of the present application, along the radial direction of the hole area, the first size of the light-shielding structure 120 from the inner periphery to the outer periphery is smaller than the designed frame value of the hole area, thereby meeting the lamination requirement of the frame with a smaller designed frame value, and realizing AAHole narrow frame design reduces the cost of the display panel Panle.

In some embodiments, referring to FIG. 1 , the light-shielding structure 120 includes a black adhesive layer 122 or a light-absorbing adhesive layer corresponding to the peripheral area in the hole area. The inner periphery of the black adhesive layer 122 or the light-absorbing adhesive layer forms a boundary of the opening 121 .

As an example, as shown in FIG. 1 , the light shielding structure 120 includes a black adhesive layer 122 , and the inner periphery of the black adhesive layer 122 forms a boundary of the opening 121 . It can be imagined that the settings of the light-absorbing adhesive layer and the black adhesive layer 122 are consistent, the light-absorbing adhesive layer achieves light shading through light absorption, and the black adhesive layer 122 achieves light shading through black blocking of light.

As an example, the black glue layer 122 is in the shape of a ring, and the opening 121 is used for placing and setting a camera. Optionally, the distance between the inner periphery and the outer periphery of the black adhesive layer 122 is within 0.1 mm.

Optionally, the shape of the black adhesive layer 122 may also be a rectangle, and the middle part of the rectangle has at least one opening 121 for correspondingly setting at least one camera. In practical applications, the shape of the black adhesive layer 122 or the light-absorbing adhesive layer can be designed according to the design of the product.

In some embodiments, the light-shielding structure 120 further includes: a transparent adhesive layer 123 disposed on one side of the base layer 110 , and the transparent adhesive layer 123 corresponds to a peripheral area in the hole area. The black adhesive layer 122 or the light-absorbing adhesive layer is correspondingly disposed on a side of the transparent adhesive layer 123 away from the base layer 110 .

As an example, see FIG. 2 , which shows a transparent glue layer 123 with the hole area of the display panel. The transparent adhesive layer 123 is transparent. In the manufacturing process of the display panel, after printing a layer of transparent adhesive layer 123, a black adhesive layer 122 or a light-absorbing adhesive layer will be prepared on the side of the transparent adhesive layer 123 away from the base layer 110. At this time, a hole will be dug at the opening 121, so that the shape of the transparent adhesive layer 123 matches the shape of the black adhesive layer 122 or the light-absorbing adhesive layer. That is, the transparent adhesive layer 123 corresponds to the peripheral area in the hole area.

In some embodiments, as shown in FIG. 3 , along the direction perpendicular to the base layer 110, the height of the side of the light shielding structure 120 away from the base layer 110 is greater than that of the pixel structure 130 in the display area 100 around the hole area away from the base layer. 110 side height.

Optionally, as shown in FIG. 3 , the arrows in the figure indicate light. After the light of the pixel structure 130 is blocked by the light-shielding structure 120 , the light-emitting light path is restricted, so that the display area corresponding to the light-shielding structure 120 does not display images.

In some embodiments, as shown in FIG. 3 , the orthographic projection of the side of the light shielding structure 120 away from the base layer 110 on the base layer 110 is closer to the pixel structure 130 than the orthographic projection of the side of the light shielding structure 120 closer to the base layer 110 .

In some embodiments, as shown in FIG. 3 , an encapsulation layer 140 is provided on a side of the pixel structure 130 away from the base layer 110 . The encapsulation layer 140 surrounds the light shielding structure 120 .

Optionally, as shown in FIG. 3 , the shape of the contact surface of the encapsulation layer 140 and the light-shielding structure 120 matches, and the contact surfaces of the encapsulation layer 140 and the light-shielding structure 120 are slopes with predetermined inclination angles. In practical applications, since the encapsulation layer 140 includes an organic layer, when encapsulating the light-shielding structure 120 , a slope is correspondingly formed.

Optionally, as shown in FIG. 3 , the height of the encapsulation layer 140 along the direction perpendicular to the base layer 110 is consistent with the height of the light shielding structure 120 along the direction perpendicular to the base layer 110 .

In some embodiments, as shown in FIG. 4 , the encapsulation layer 140 and the light shielding structure 120 are provided with a planar layer 150 and a touch layer 160 in sequence on a side away from the base layer 110 .

The inventors of the present application have found through further research that FMLOC (Flexible Multi-Layer On Cell, flexible multi-layer touch technology) process will have IJP (Ink Jet Printing, inkjet printing) process, and IJP can be used to print light-shielding structures in the AAHole area The black adhesive layer 122, the transparent adhesive layer 123, and the light-absorbing adhesive layer of 120, the light-shielding structure 120 can play a flat and light-shielding effect.

In some embodiments, the height of the light shielding structure 120 along the direction perpendicular to the base layer 110 is 8 μm (micrometer)-20 μm. Optionally, the numerical ranges in the embodiments of the present application include upper and lower limits, for example, the height range of the light shielding structure 120 along the direction perpendicular to the base layer 110 includes 8 μm and 20 μm, and the similarities in the whole text will not be repeated.

Optionally, the heights of the black adhesive layer 122 , the transparent adhesive layer 123 and the light-absorbing adhesive layer along a direction perpendicular to the base layer 110 are all within a range of 8 μm-10 μm.

Based on the same inventive concept, an embodiment of the present application further provides a display device, including: the display panel of any embodiment of the present application.

Based on the same inventive concept, the embodiment of the present application also provides a method for preparing a display panel, which is applied to the display panel in any embodiment of the present application, as shown in FIG. 5 , the method for preparing the display panel includes the following steps:

S501. Print a light-shielding glue structure on one side of the base layer 110 and corresponding to the hole area of the display area 100 of the display panel; the light-shielding glue structure has an initial opening.

S502, curing the light-shielding glue structure to obtain a light-shielding structure 120; the light-shielding structure 120 has an opening 121, and the light-shielding structure 120 corresponds to the peripheral area in the hole area, and along the radial direction of the hole area, the light-shielding structure 120 points from the inner periphery to The first dimension of the outer perimeter is less than the design border value of the hole area.

Optionally, the shape of the opening 121 is formed after the initial opening is cured.

In some embodiments, the light-shielding glue structure is cured to obtain the light-shielding structure 120, including:

Referring to FIG. 2 , on one side of the base layer 110 and corresponding to the hole area of the display area 100 of the display panel, a layer of transparent adhesive layer 123 is printed.

1, on the side of the transparent adhesive layer 123 away from the base layer 110 and corresponding to the peripheral area in the hole area of the display area 100 of the display panel, a black adhesive layer 122 or a light-absorbing adhesive layer is printed; black The adhesive layer 122 or the light-absorbing adhesive layer has openings.

Optionally, on one side of the base layer 110 and corresponding to the hole area of the display area 100 of the display panel, printing the light-shielding glue structure includes: Where the hole area corresponds to, print a black adhesive layer 122 or a light-absorbing adhesive layer.

The preparation method of the embodiment of the present application adopts the method of printing the light-shielding glue structure, which can reduce the lamination accuracy requirements of the light-shielding structure, so that along the radial direction of the hole area, the first dimension of the light-shielding structure 120 from the inner periphery to the outer periphery is smaller than that of the hole area. Design the frame value to further meet the lamination requirements of the smaller frame design frame value, realize the design of AA Hole narrow frame, and reduce the cost of the display panel Panle.

In the process of process preparation, the inventors of the present application considered that the width of the frame of AA Hole is relatively wide. In order to reduce the width of the frame, each process section is adjusted. The bonding accuracy of the light-shielding structure 120 is 0.6mm-1.0mm, which cannot meet the requirements. The border of AA Hole is equal to or less than 0.5mm.

Optionally, the embodiment of the present application utilizes the IJP process of FMLOC, and IJP can be used to print the black adhesive layer 122, the transparent adhesive layer 123 and the light-absorbing adhesive layer of the light-shielding structure 120 in the AA Hole area, and the formed light-shielding structure 120 can be flat and smooth. Blackout effect.

In the embodiment of the present application, the FMLOC IJP process is used to print the light-shielding structure 120 in the AA Hole area, so that the light-shielding structure 120 does not need to be pasted in the subsequent process, and further meets the bonding requirements of the design frame with a smaller frame value.

By applying the preparation method of the embodiment of the present application, adjustments are made under the existing process, without increasing the cost and reducing the cost of subsequent materials. Moreover, the embodiment of the present application adopts the IJP process, which improves the lamination accuracy of the process, and can meet the lamination requirements of the design frame with a smaller frame value.

Optionally, to prepare the transparent adhesive layer 123 , the black adhesive layer 122 and the light-absorbing adhesive layer of the light-shielding structure 120 , drop IJP on the surrounding area of the AAHole where light-shielding is required, and then perform UV treatment and curing to obtain the light-shielding structure 120 .

By applying the embodiments of the present application, at least the following beneficial effects can be achieved:

(1) In the display panel of the embodiment of the present application, along the radial direction of the hole area, the first size of the light-shielding structure 120 from the inner periphery to the outer periphery is smaller than the design frame value of the hole area, so as to meet the fit of the frame with a smaller design frame value Requirements, realize the design of AA Hole narrow frame, reduce the cost of display panel Panle.

(2) The preparation method of the embodiment of the present application adopts the method of printing the light-shielding glue structure, which can reduce the lamination accuracy requirements of the light-shielding structure, so that along the radial direction of the hole area, the first dimension of the light-shielding structure 120 from the inner periphery to the outer periphery is smaller than The design frame value of the hole area further meets the lamination requirements of a smaller design frame value of the frame, realizes the design of the AA Hole narrow frame, and reduces the cost of the display panel Panle.

(3) In the embodiment of the present application, the IJP process of FMLOC can be used to print the black adhesive layer 122, the transparent adhesive layer 123 and the light-absorbing adhesive layer of the light-shielding structure 120 in the AA Hole area by IJP, and the formed light-shielding structure 120 can be flat and light-shielding Effect.

(4) In the embodiment of the present application, the FMLOC IJP process is used to print the light-shielding structure 120 in the AA Hole area, so that there is no need to attach the light-shielding structure 120 in the subsequent process, and further meet the bonding requirements of the frame with a smaller frame value.

Those skilled in the art can understand that the various operations, methods, and steps, measures, and schemes in the processes that have been discussed in this application can be replaced, changed, combined, or deleted. Furthermore, the various operations, methods, and other steps, measures, and schemes in the processes that have been discussed in this application may also be replaced, changed, rearranged, decomposed, combined, or deleted. Further, steps, measures, and schemes in the prior art that have operations, methods, and processes disclosed in the present application may also be alternated, changed, rearranged, decomposed, combined, or deleted.

In the description of this application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the application.

The terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in an appropriate manner.

It should be understood that although the various steps in the flow chart of the accompanying drawings are displayed sequentially according to the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages may not necessarily be executed at the same time, but may be executed at different times, and the order of execution is also It is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

The above description is only part of the implementation of the present application, and it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, some improvements and modifications can also be made, and these improvements and modifications are also It should be regarded as the protection scope of this application.

Claims (8)

1. A display panel comprising a display area, the display area comprising an aperture area, further comprising:

a base layer;

a light shielding structure provided on one side of the base layer, the light shielding structure having an opening, and the light shielding structure corresponding to a peripheral region among the hole regions; along the radial direction of the hole area, the first dimension of the shading structure from the inner periphery to the outer periphery is smaller than the design frame value of the hole area;

the shading structure comprises a black glue layer or a light absorbing glue layer corresponding to the peripheral area in the hole area; the inner periphery of the black adhesive layer or the light absorbing adhesive layer forms the boundary of the opening;

the light shielding structure further includes: a transparent adhesive layer arranged on one side of the substrate layer, wherein the transparent adhesive layer corresponds to the peripheral area in the hole area; the black adhesive layer or the light absorbing adhesive layer is arranged on one side of the transparent adhesive layer away from the basal layer;

the height of one side of the light shielding structure away from the substrate layer is larger than the height of one side of the pixel structure away from the substrate layer in the display area around the hole area along the direction perpendicular to the substrate layer.

2. The display panel of claim 1, wherein a side of the light shielding structure remote from the base layer is closer to the pixel structure than an orthographic projection of a side of the light shielding structure closer to the base layer.

3. The display panel according to claim 1, wherein a packaging layer is provided on a side of the pixel structure away from the substrate layer;

the encapsulation layer surrounds the light shielding structure.

4. The display panel according to claim 3, wherein a flat layer and a touch layer are sequentially disposed on a side of the encapsulation layer and the light shielding structure away from the substrate layer.

5. The display panel of claim 1, wherein the light shielding structure has a height of 8-20 microns in a direction perpendicular to the base layer.

6. A display device, comprising: the display panel of any one of claims 1-5.

7. A method for manufacturing a display panel, applied to the display panel according to any one of claims 1 to 5, comprising:

printing a shading adhesive structure on one side of the basal layer and corresponding to a hole area of a display area of the display panel; the shading adhesive structure is provided with an initial opening;

curing the shading adhesive structure to obtain a shading structure; the light shielding structure is provided with an opening, corresponds to a peripheral area in the hole area, and is smaller than a design frame value of the hole area along the radial direction of the hole area, wherein the first dimension of the light shielding structure from the inner periphery to the outer periphery is smaller than the design frame value of the hole area.

8. The method of manufacturing a display panel according to claim 7, wherein the printing a light shielding paste structure on one side of the base layer and corresponding to the hole area of the display panel comprises:

printing a transparent adhesive layer on one side of the substrate layer and corresponding to the hole area of the display panel;

printing a black adhesive layer or a light absorbing adhesive layer on one side of the transparent adhesive layer far away from the substrate layer and corresponding to the peripheral area in the hole area of the display panel; the black glue layer or the light absorbing glue layer has the initial opening.

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