CN107065315B - Display panel and display device - Google Patents
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- CN107065315B CN107065315B CN201710206905.8A CN201710206905A CN107065315B CN 107065315 B CN107065315 B CN 107065315B CN 201710206905 A CN201710206905 A CN 201710206905A CN 107065315 B CN107065315 B CN 107065315B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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Abstract
本发明提供一种显示面板及显示装置。显示面板包括：对盒设置的对盒基板和显示基板，显示基板在朝向对盒基板的一侧至少形成厚度不同的第一部分和第二部分，第一部分在显示基板的厚度大于第二部分在显示基板的厚度，对盒基板包括：衬底基板和形成在衬底基板上的对盒功能层，对盒功能层包括有厚度不同的第三部分和第四部分，第三部分的厚度小于第四部分的厚度；在对盒基板与显示基板对盒后，第三部分在显示基板的正向投影与第一部分在显示基板的正向投影具有重合区域，第四部分在显示基板的正向投影与第二部分在显示基板的正向投影具有重合区域。本发明的方案能够减小对盒基板与显示基板在对盒后所残留的应力。
The present invention provides a display panel and a display device. The display panel includes: a cell-to-cell substrate and a display substrate arranged for cell-to-cell, the display substrate forms at least a first part and a second part with different thicknesses on a side facing the cell-to-cell substrate, and the thickness of the first part on the display substrate is greater than that of the second part on the display substrate The thickness of the substrate. The cell-aligning substrate includes: a base substrate and a cell-aligning functional layer formed on the base substrate. The cell-aligning functional layer includes a third part and a fourth part with different thicknesses, and the thickness of the third part is smaller than that of the fourth part. The thickness of the part; after the cell assembling substrate and the display substrate are assembled, the forward projection of the third part on the display substrate and the forward projection of the first part on the display substrate have an overlapping area, and the forward projection of the fourth part on the display substrate and The forward projection of the second portion on the display substrate has an overlapping area. The solution of the present invention can reduce the residual stress after assembling the assembling substrate and the display substrate.
Description
Technical Field
The present invention relates to the field of manufacturing display devices, and more particularly, to a display panel and a display device.
Background
In the display device, the display panel is formed by aligning an upper substrate and a lower substrate, and marks (marks) for positioning are placed on certain specific areas of the substrates during the manufacturing process.
When the functional layer is manufactured on the substrate, the marks need to be avoided, so that the thickness of the layer cannot always ensure the uniformity after the substrate is manufactured, and thus, uneven stress is generated in the process of vacuum box alignment of the upper substrate and the lower substrate. Under the action of stress, the upper and lower substrates are easy to deform, and if the stress is not released before the frame sealing glue is cured, the deformation can be kept all the time, so that the distance between display panel boxes is uneven, the liquid crystal display is affected, and the phenomenon that the periphery of a screen is yellow is often caused when pictures are displayed.
In view of the above, a solution to the problem of residual stress in the cell-to-cell process of the display panel is needed.
Disclosure of Invention
The invention aims to solve the problem of residual stress of the existing display panel in the box aligning process.
In order to achieve the above object, in one aspect, an embodiment of the present invention provides a display panel including a pair of cell substrates provided to a cell, and a display substrate, the display substrate having at least a first portion and a second portion which are different in thickness on a side facing the pair of cell substrates, the first portion having a smaller thickness in the display substrate than the second portion;
the pair of cassette substrates includes: the dual-functional-box comprises a substrate and a dual-functional-box layer formed on the substrate, wherein the dual-functional-box layer comprises a third part and a fourth part which are different in thickness, and the thickness of the third part is smaller than that of the fourth part;
after the box aligning substrate and the display substrate are aligned, the orthographic projection of the third part on the display substrate and the orthographic projection of the first part on the display substrate have an overlapping region, and the orthographic projection of the fourth part on the display substrate and the orthographic projection of the second part on the display substrate have an overlapping region.
Wherein the distance between the third part and the center of the pair of box substrates is greater than the distance between the fourth part and the center of the pair of box substrates, and the thickness of the third part is greater than that of the fourth part.
The pair of box substrates are divided into a display central area, a display edge area surrounding the display central area and a non-display area surrounding the display edge area;
wherein an average thickness of the pair of cell functional layers in the display central region is less than an average thickness of the pair of cell functional layers in the display edge region;
the average thickness of the pair of box functional layers located in the display edge region is smaller than the average thickness of the pair of box functional layers located in the non-display region.
Wherein the thickness of the pair of cell functional layers located in the display central region is equal everywhere;
the thickness of the pair of box functional layers located in the non-display area is equal everywhere;
the thickness of the pair of box functional layers located in the display edge area gradually increases in a direction from near to the center of the pair of box substrates to far from the center of the pair of box substrates.
Wherein the pair of cassette substrates further comprises:
and the insulating layer covers the pair of box functional layers, and in the display edge area, the insulating layer is based on the pair of box functional layers with different thicknesses so as to form a smooth end face.
The box alignment functional layer comprises a plurality of functional graphs, the thickness of a first functional graph is larger than that of a second functional graph in the display edge area, and the distance between the first functional graph and the center of the box alignment substrate is larger than that between the second functional graph and the center of the box alignment substrate.
The box aligning substrate is a color film substrate;
the pair box functional layer is a color filter layer, and the functional pattern is a color resistance pattern in the color filter layer.
Wherein the thickness of the color filter layer is 1.7-2.5 micrometers.
On the other hand, the embodiment of the invention also provides a display device, which comprises the display panel provided by the invention.
The scheme of the invention has the following beneficial effects:
according to the scheme, the box aligning functional layer is arranged on the box aligning substrate, the thickness of the box aligning functional layer and the film thickness of the display substrate have a corresponding relation, namely after the box aligning substrate and the display substrate are aligned, the thinner area of the box substrate is opposite to the thicker area of the display substrate, and the thicker area of the box substrate is opposite to the thinner area of the display substrate.
Drawings
FIG. 1 is a schematic structural diagram of a display panel according to the present invention;
FIGS. 2-5 are schematic structural views of the cassette substrate according to the present invention;
fig. 6 is a schematic structural diagram when the cassette aligning substrate of the present invention is a color film substrate;
FIG. 7 is a schematic diagram illustrating yellow intensity coefficients corresponding to a display edge region and a display center region when a conventional display device displays a screen;
fig. 8 is a schematic diagram illustrating yellow intensity coefficients corresponding to a display edge region and a display center region when a display device displays a screen.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a solution for solving the problem of residual stress after box alignment caused by uneven thickness of a substrate film layer in the prior art.
In one aspect, an embodiment of the present invention further provides a display panel, as shown in fig. 1, including a display substrate 1 and a pair-box substrate 2 disposed in a pair of boxes. Wherein, the display substrate 1 is provided with at least a first part A and a second part B with different thicknesses on the side facing the opposite box substrate 2, and the thickness of the first part A on the display substrate 1 is smaller than that of the second part B on the display substrate 1. That is, the display substrate 1 has a problem that the thickness of the film is not uniform as in the prior art.
Correspondingly, the pair of cassette substrates 2 includes:
the dual-functional-layer liquid crystal display comprises a substrate base plate 21 and a dual-functional-layer-box 22 formed on the substrate base plate 21, wherein the dual-functional-layer-box 22 comprises a third part C and a fourth part D which are different in thickness, and the thickness of the third part C is smaller than that of the fourth part D;
after the box aligning substrate 2 and the display substrate 1 are aligned, the forward projection of the third part C on the display substrate 1 and the forward projection of the first part A on the display substrate 1 have an overlapping region, that is, the third part C of the box aligning substrate 2 is opposite to the first part A of the display substrate 1; similarly, the forward projection of the fourth portion D on the display substrate 1 and the forward projection of the second portion B on the display substrate 1 have an overlapping region, that is, the fourth portion D of the pair of cell substrates 2 faces the second portion B of the display substrate 1.
It can be seen that this embodiment sets up the box functional layer to on the box base plate, this thickness to the box functional layer has corresponding relation with display substrate's rete thickness, to box base plate and display substrate after to the box promptly, to the thinner region of box base plate just to the thicker region of display substrate, to the thicker region of box base plate just to the thinner region of display substrate, based on this design, make to box base plate and display substrate offset the influence that the box thickness is inconsistent bringing to the box in-process, thereby after accomplishing the box, effectively reduce remaining stress, guarantee that display panel does not take place great deformation and influence normal demonstration.
For example, assuming that the display substrate is a lower substrate, a MASK is disposed at an edge region of the display substrate in a conventional manufacturing process, that is, a functional layer of the display substrate needs to avoid the MASK region, so that a thickness of a film layer in a central region is greater than that in the edge region.
Therefore, in the present embodiment, assuming that the distance between the third portion C and the center of the opposing substrate 2 is greater than the distance between the fourth portion D and the center of the display substrate, the thickness of the third portion is greater than that of the fourth portion, and thus corresponds to the display substrate.
In practical applications, the display substrate has a maximum thickness of a film layer in a display central region (typically, a display device such as a thin film transistor, a pixel electrode, and a signal line is provided), a display edge region surrounding the display central region (typically, a signal line is provided), and a non-display region surrounding the display edge region (typically, a MASK is provided).
Accordingly, as shown in fig. 2, the average thickness of the pair-cell functional layer 21 of the pair-cell substrate in the display central region Z-Z is smaller than the average thickness of the pair-cell functional layer 21 in the display edge region Y-Z, Z x-Y; the average thickness of the pair-cell functional layer 21 located at the display edge region Y-Z, Z X-Y is smaller than the average thickness of the pair-cell functional layer 21 located at the non-display region X-Y, Y X.
Preferably, in addition to the above, as shown in fig. 3, in the pair-cell substrate of the present embodiment, the thickness of the pair-cell functional layer 21 in the display central region Z-Z is equal at all locations, and the thickness of the pair-cell functional layer 21 in the non-display region X-Y, Y-X is equal at all locations; the thickness of the pair-cell functional layer in the bit display edge region Y-Z, Z-Y gradually increases from near the center of the pair-cell substrate 21 to far from the center of the pair-cell substrate 21.
Based on this structural design, the slope of the display central region Z-Z and the non-display region X-Y, Y-X of the cell substrate 21 is relatively gentle, so that uniform pressure is applied to the display central region and the non-display region of the display substrate during cell alignment, which is more helpful for image display.
In addition, as shown in fig. 4, in practical applications, the pair-box functional layer 21 of the present embodiment may be composed of a plurality of functional patterns 211, and in the display edge region Y-Z, Z-Y, assuming that the distance between the first functional pattern and the center of the pair-box substrate is greater than the distance between the second functional pattern and the center of the pair-box substrate, the thickness of the first functional pattern is greater than the thickness of the second functional pattern. Therefore, taking the edge region Y-Z, Z-Y shown in fig. 4 as an example, the edge region Y-Z, Z-Y can be formed by a plurality of functional patterns 211 in a manner similar to integration to form a gentle slope structure.
In addition, in order to further make the pair-box functional layer 21 have a smooth surface, as shown in fig. 5, the pair-box substrate of the present embodiment further includes:
the insulating layer 23 covering the pair-box functional layer 21 is based on the different thicknesses of the pair-box functional layer 21 to form a smooth end surface (the smooth end surface is not planar but has a curvature) within the display edge region Y-Z, Z-Y. Obviously, the provision of the insulating layer 23 can further improve the smoothness of the side of the cell substrate facing the display substrate, and can prevent uneven stress from being applied to the display substrate during the cell alignment process.
In a specific implementation, the thickness gradient of the cell function layer of the cell-on-cell substrate of this embodiment may be set according to the cell thickness gradient of the display substrate, for example, the cell thickness gradient of the display substrate in the display edge region Y-Z, Z × Y is 85 μm/7.5mm, and the display edge region Y-Z, Z × Y of the cell-on-cell substrate is consistent with the display substrate, which is also 0.85 μm/7.5 mm.
The cartridge substrate of the present embodiment will be described in detail with reference to one implementation.
In an implementation manner, if the opposing substrate is a color film substrate, the display substrate aligned with the opposing substrate is an array substrate.
Referring to fig. 6, the pair-box functional layer of the color filter substrate is specifically an existing color filter layer 22, and correspondingly, the functional pattern constituting the pair-box functional layer is a color resistance pattern in the color filter layer 22. The color resistance patterns comprise a red color resistance pattern R, a green color resistance pattern G and a blue color resistance pattern B, and the color resistance patterns of different colors are shielded by a black matrix 24 arranged on the color film substrate.
Preferably, the thickness of the color filter layer 22 is 1.7 micrometers to 2.5 micrometers, that is, the color resistance pattern R, G, B is in a range of 1.7 micrometers to 2.5 micrometers, and gradually becomes thicker in a direction away from the central area of the color filter substrate.
Continuous practice proves that the thickness of the color filter layer 22 of the embodiment varies within a range of 1.7 micrometers to 2.5 micrometers, which can ensure that the color filter layer 22 further meets the requirement of the array substrate for the box on the premise of realizing the traditional filtering function.
It can be seen that in this implementation manner, the pair-box functional layer of the color filter substrate is reused as the existing color filter layer, so that a new manufacturing process is not additionally added on the basis of the existing manufacturing process in the implementation of the scheme of this embodiment, that is, the manufacturing cost of the color filter substrate is not additionally increased in the scheme of this embodiment.
In addition, referring to fig. 6, in the conventional color filter substrate, an insulating layer 23 covering the color filter layer 22 needs to be provided, and a spacer (the spacer is an existing pattern) required for cassette assembly needs to be subsequently provided on the insulating layer 23, so that the insulating layer 23 of the color filter substrate of this embodiment can further increase the smoothness of the color filter substrate toward the array substrate.
The above is the introduction of the implementation manner, and it can be seen that, compared with the prior art, the implementation manner can reduce the residual stress after the color film substrate and the array substrate are boxed into the display panel only by changing the thickness of the color resistance graph of the color film substrate.
It should be noted that, the pair box substrate and the display substrate of the present embodiment are distinguished only by different names, and as an example, the pair box substrate of the present embodiment may be an array substrate, and the display substrate may be a color filter substrate, that is, the present embodiment may form a pair box functional layer on the array substrate to meet the pair box requirement of the array substrate and the color filter substrate. Since the principle is the same, the description is not repeated herein by way of example.
In addition, in practical applications, there may be a plurality of regions with uneven thicknesses on the display substrate of the display panel, and therefore, the pair-box functional layer of the pair-box substrate may also have regions with different thicknesses.
On the other hand, the embodiment of the invention also provides a display device, which comprises the display panel provided by the invention.
Referring to fig. 7, fig. 7 is a schematic diagram illustrating a display of a conventional display device for yellow, wherein the left side of a dotted line indicates a display edge area, the right side of the dotted line indicates a display center area, and an ordinate indicates a yellow intensity coefficient of a display screen.
Further, referring to fig. 8, fig. 8 is a schematic diagram of a display of the display device of this embodiment for yellow, as with fig. 7, where the left side of the dotted line represents a display edge region, the right side of the dotted line represents a display center region, and the ordinate represents a yellow intensity coefficient of a display screen, as can be seen from fig. 8, the yellow intensity of the display device of this embodiment in the display edge region and the yellow intensity of the display center region are approximately consistent, and belong to a normal range, and the phenomenon of yellowing around the existing display device has been solved.
In practical applications, the display device of the embodiment may be a product with a display panel, such as a mobile phone, a tablet computer, a television, a watch, and the like.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A display panel comprises a pair of box substrates and a display substrate which are arranged in a pair of boxes,
the display substrate is provided with at least a first part and a second part which are different in thickness on one side facing the pair of box substrates, and the thickness of the first part on the display substrate is smaller than that of the second part on the display substrate;
the pair of cassette substrates includes: the dual-functional-box comprises a substrate and a dual-functional-box layer formed on the substrate, wherein the dual-functional-box layer comprises a third part and a fourth part which are different in thickness, and the thickness of the third part is larger than that of the fourth part;
after the cell aligning substrate and the display substrate are aligned, the orthographic projection of the third part on the display substrate and the orthographic projection of the first part on the display substrate have an overlapping region, and the orthographic projection of the fourth part on the display substrate and the orthographic projection of the second part on the display substrate have an overlapping region;
the pair of cell substrates are divided into a display central area, a display edge area surrounding the display central area and a non-display area surrounding the display edge area;
wherein an average thickness of the pair of cell functional layers in the display central region is less than an average thickness of the pair of cell functional layers in the display edge region;
the average thickness of the pair of box functional layers at the display edge area is smaller than that at the non-display area;
the thickness of the pair of box functional layers located in the display central region is equal everywhere;
the thickness of the pair of box functional layers located in the non-display area is equal everywhere;
the thickness of the pair of box functional layers positioned in the display edge area is gradually increased from the direction close to the center of the pair of box substrates to the direction far away from the center of the pair of box substrates;
the pair of cassette substrates further includes:
an insulating layer covering the pair of cell functional layers, the insulating layer being based on the pair of cell functional layers of different thicknesses in the display edge region to form a smooth end face;
the box aligning substrate is a color film substrate;
the pair box functional layer comprises a plurality of functional patterns, the pair box functional layer is a color filter layer, and the functional patterns are color resistance patterns in the color filter layer.
2. The display panel according to claim 1,
the distance between the third part and the center of the pair of box substrates is larger than that between the fourth part and the center of the pair of box substrates, and the thickness of the third part is larger than that of the fourth part.
3. The display panel according to claim 1,
in the display edge area, the thickness of the first functional graph is larger than that of the second functional graph, wherein the distance between the first functional graph and the center of the paired box substrates is larger than that between the second functional graph and the center of the paired box substrates.
4. The display panel according to claim 1,
the thickness of the color filter layer is 1.7-2.5 micrometers.
5. A display device comprising the display panel according to any one of claims 1 to 4.
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| CN201710206905.8A CN107065315B (en) | 2017-03-31 | 2017-03-31 | Display panel and display device |
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| CN201710206905.8A CN107065315B (en) | 2017-03-31 | 2017-03-31 | Display panel and display device |
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| JP7073787B2 (en) * | 2018-03-06 | 2022-05-24 | 株式会社リコー | Arrangement structure of mounting board, arrangement structure of image sensor board, manufacturing method of image pickup device and image pickup device |
| CN109991782B (en) * | 2019-04-02 | 2021-11-05 | 惠科股份有限公司 | Display panel and display device |
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| JP2003255322A (en) * | 2002-03-01 | 2003-09-10 | Casio Comput Co Ltd | Liquid crystal display device |
| CN103278982A (en) * | 2012-12-14 | 2013-09-04 | 上海中航光电子有限公司 | Liquid crystal display panel and forming method thereof |
| CN105892132A (en) * | 2016-06-24 | 2016-08-24 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN106249468A (en) * | 2016-11-01 | 2016-12-21 | 合肥鑫晟光电科技有限公司 | A kind of color membrane substrates and preparation method thereof, display floater and display device |
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|---|---|---|---|---|
| JP2003255322A (en) * | 2002-03-01 | 2003-09-10 | Casio Comput Co Ltd | Liquid crystal display device |
| CN103278982A (en) * | 2012-12-14 | 2013-09-04 | 上海中航光电子有限公司 | Liquid crystal display panel and forming method thereof |
| CN105892132A (en) * | 2016-06-24 | 2016-08-24 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN106249468A (en) * | 2016-11-01 | 2016-12-21 | 合肥鑫晟光电科技有限公司 | A kind of color membrane substrates and preparation method thereof, display floater and display device |
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