CN109061935B - Display device and manufacturing method thereof - Google Patents
Display device and manufacturing method thereof Download PDFInfo
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- CN109061935B CN109061935B CN201811227618.6A CN201811227618A CN109061935B CN 109061935 B CN109061935 B CN 109061935B CN 201811227618 A CN201811227618 A CN 201811227618A CN 109061935 B CN109061935 B CN 109061935B
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
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Abstract
The embodiment of the invention discloses a display device and a manufacturing method thereof, wherein the display device comprises: an opposing substrate and a display panel which are arranged oppositely; the display panel comprises a display area and a non-display area surrounding the display area; the opposite substrate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area, and the orthographic projection of the display area on the plane of the opposite substrate is positioned in the light-transmitting area; the display device also comprises an optical adhesive layer, wherein the optical adhesive layer is positioned between the opposite substrate and the display panel; the optical adhesive layer comprises a first area and a second area surrounding the first area, and the orthographic projection of the second area on the plane of the opposite substrate is positioned in the shading area; light scattering particles are arranged in the second area. By arranging the light scattering particles in the second area of the optical adhesive layer, light which originally generates bright lines in the bright line area can be dispersed to a larger area, so that the problem of large-viewing-angle bright lines of a narrow-frame display device is solved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device and a method for manufacturing the display device.
Background
Liquid crystal display devices are widely used in various display devices because of their advantages of being light, thin, low in power consumption, non-radiative, and the like. With the development of display technology, the demand of users for liquid crystal display devices is increasing. The full-screen display device is more and more popular with users because the full-screen display device can maximally utilize the display area of the display panel screen to bring better visual experience to the users.
However, as the "full screen" technology is continuously developed, the top and bottom borders are compressed more and more to achieve a higher screen fraction. When the display device is not lightened, along with the increase of an observation angle, a lower frame of the display device can generate an obvious bright line; when the display device is lighted, the image is viewed under a large viewing angle, and the edge of the display device has a bright line problem, so that the display quality is obviously reduced.
Disclosure of Invention
In view of the above, the present invention provides a display device and a method for manufacturing the display device, which can effectively solve the problem of bright lines with large viewing angle of a narrow-frame display device.
In one aspect, the present invention provides a display device comprising:
an opposing substrate and a display panel which are arranged oppositely;
the display panel comprises a display area and a non-display area surrounding the display area;
the opposite substrate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area, and the orthographic projection of the display area on the plane of the opposite substrate is positioned in the light-transmitting area;
the display device also comprises an optical adhesive layer, wherein the optical adhesive layer is positioned between the opposite substrate and the display panel;
the optical adhesive layer comprises a first area and a second area surrounding the first area, and the orthographic projection of the second area on the plane of the opposite substrate is positioned in the shading area;
light scattering particles are arranged in the second area.
In another aspect, the present invention provides a method for manufacturing a display device, including:
providing a display panel, wherein the display panel comprises a display area and a non-display area surrounding the display area;
providing an opposite substrate, wherein the opposite substrate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area;
forming an optical adhesive layer, wherein the optical adhesive layer is positioned on one side of the opposite substrate and comprises a first region and a second region surrounding the first region, and light scattering particles are arranged in the second region;
the opposite substrate and the display panel are oppositely arranged and attached, the optical adhesive layer is located between the opposite substrate and the display panel, the orthographic projection of the display area on the plane of the opposite substrate is located in the light-transmitting area, and the orthographic projection of the second area on the plane of the opposite substrate is located in the light-shielding area.
Compared with the prior art, the display device and the manufacturing method thereof provided by the invention have the beneficial effects that: the light scattering particles are arranged in the second area, corresponding to the opposite substrate shading area, of the optical adhesive layer, and when the display device is not lightened, the light rays incident from the external environment and the light rays emitted after the incident light rays are reflected by the interior of the display device can be scattered by the light scattering particles; when the display device is lit, the light scattering particles may scatter light rays that emerge from the edges of the backlight. Therefore, the arrangement of the light scattering particles can damage the light propagation path of the original bright line area, so that the incident and emergent light is more dispersed, the content of the light generating the bright line in the original bright line area is reduced, and the problem of the large-viewing-angle bright line of the narrow-frame display device is further improved.
Drawings
FIG. 1 is a schematic plan view of a display device in the prior art;
FIG. 2 is a schematic sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a display device according to the related art;
fig. 4 is a schematic plan view of a display device according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view illustrating a display device according to an embodiment of the invention;
FIG. 6 is an enlarged view of area QA in FIG. 5;
FIG. 7 is an enlarged view of region QB of FIG. 5;
fig. 8 is a schematic cross-sectional view of another display device according to an embodiment of the invention;
FIG. 9 is a schematic plan view of the optical adhesive layer of FIG. 8;
FIG. 10 is a schematic view of another planar structure of an optical adhesive layer according to an embodiment of the present invention;
fig. 11 is a schematic cross-sectional view illustrating a display device according to another embodiment of the present invention;
FIG. 12 is a schematic plan view of the optical adhesive layer of FIG. 11;
fig. 13 is a schematic flow chart illustrating a method for manufacturing a display device according to an embodiment of the present invention;
fig. 14 is a schematic flow chart of forming an optical adhesive layer according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In order to improve the problem of large-viewing-angle bright lines of a narrow-bezel display device, the inventors have conducted the following research: fig. 1 is a schematic plan view of a display device in the prior art, and fig. 2 is a schematic sectional view taken along a direction a-a' in fig. 1. Referring to fig. 1 and 2, the display device 001 includes a display panel 20, where the display panel 20 includes a color Film substrate 22 and an array substrate 23 that are disposed opposite to each other, a liquid crystal LC sandwiched between the color Film substrate 22 and the array substrate 23, a sealant 24 for sealing the liquid crystal, an upper polarizer 21a, a lower polarizer 21b, and a Chip On Film (COF). A transparent conductive layer 25 is further disposed on a side of the color film substrate 22 away from the array substrate 23, and when the Display device 001 is an Embedded Touch Display (TED), the transparent conductive layer 25 is Antimony-doped Tin Oxide (ATO); when the display device is an external touch device, the transparent conductive layer 25 is Indium Tin Oxide (ITO). The transparent conductive layer 25 is electrically connected to the ground pin 40 on the array substrate 23 through the silver paste 50, thereby playing a role of electrostatic discharge (ESD). In order to ensure that static electricity can be released through the conductive paths of the transparent conductive layer 25, the silver paste 50 and the grounding pin 40, when the upper polarizer 21a is attached after the display panel 20 is boxed, a certain distance is usually required to be reserved between the edge of the upper polarizer 21a and the edge of the transparent conductive layer 25, that is, the transparent conductive layer 25 cannot be attached to the side of the upper polarizer 21a close to the grounding pin. Thus, the contact area between the conductive layer 25 and the ground pin 40 is ensured to be sufficient for ESD protection during the dispensing operation.
Referring to fig. 3, fig. 3 is a schematic cross-sectional structure diagram of a display device in the related art. After the above-mentioned dispensing process is completed, an Optical Clear Adhesive (OCA) 30 is coated on the upper polarizer 21a, and then the opposite cover plate 10 is attached. When the display device is not lit, after the ambient light 01 enters the display device, part of the light LG4 will be reflected and then emitted from the display device, and since the edge of the upper polarizer 21a is not fully attached to the transparent conductive layer 25 and the upper polarizer 21a changes the polarization direction of the light, when the human eye 00 observes under a large viewing angle, a bright line is clearly seen at the edge of the upper polarizer 21 a. In addition, in the practical use process, the upper polarizer 21a is susceptible to the influence of the external temperature and humidity environment, and after the influence of the external temperature and humidity environment, the upper polarizer 21a contracts, so that the problem of bright lines is aggravated. When the display device is turned on, due to light leakage at the edge of the display panel 20 and a backlight module (not shown), part of the light LG1 and the light LG2 in the leaked light LG are absorbed by the light-shielding material 11 of the opposite substrate 10, and part of the light LG3 is emitted through the optical adhesive layer 30 and the opposite substrate 10, so that when an image is observed at a large viewing angle, the part of the light LG3 enters human eyes 00 to form a clear bright line.
Based on the research, the application provides a display device and a manufacturing method of the display device, and the problem of large-viewing-angle bright lines of a narrow-frame display device is solved. The display panel having the above technical effects provided by the present application is described in detail as follows.
Referring to fig. 4 and 5, fig. 4 is a schematic plan view of a display device according to an embodiment of the present invention, and fig. 5 is a schematic cross-sectional view of the display device according to the embodiment of the present invention. The display device 100 includes: an opposing substrate 10 and a display panel 20 disposed to face each other; the display panel 20 includes a display area AA and a non-display area NA surrounding the display area AA; the opposite substrate 10 comprises a light-transmitting area 102 and a light-shielding area 101 surrounding the light-transmitting area 102, and an orthographic projection of the display area AA on a plane where the opposite substrate 10 is located in the light-transmitting area 102; the display device further includes an optical adhesive layer 30, the optical adhesive layer 30 being located between the opposite substrate 10 and the display panel 20; the optical adhesive layer 30 comprises a first area 301 and a second area 302 surrounding the first area 301, and the orthographic projection of the second area 302 on the plane of the opposite substrate 10 is positioned in the light shielding area 101; the second region 302 has light scattering particles 31 disposed therein.
Specifically, referring to fig. 4, 5 and 6, fig. 6 is an enlarged view of the area QA of fig. 5. In the following drawings, the same structures are denoted by the same reference numerals, and are not described in detail. When the display device 100 is lit, a part of the light LG1 of the light LG leaking from the backlight is absorbed by the light shielding material 11 of the counter substrate 10 in the light shielding region 101, and the part of the light LG2 is still absorbed by the light shielding material 11 after being shifted by a certain angle. The light LG3 propagates in the direction close to the light-transmitting region 102, and due to the light scattering particles 31 arranged in the second region 302 of the optical adhesive layer 30, the light scattering particles 31 scatter the light incident on the second region 302, and the light LG3 is scattered for multiple times to form a more dispersed light LG 3', so that the light LG is absorbed by the light-shielding material 11. That is, the light scattering particles 31 change the original light path that is emitted to the human eye 00 through the second region 302, so that the light that originally generates bright lines in the region QA is dispersed to a larger region, thereby reducing the content of the light that generates bright lines in the original bright line region; the dispersed partial light LG 3' is absorbed by the light-shielding material 11, and part of the light is received by the human eye 00 (the partial light is not shown in fig. 6), but since the light entering the human eye 00 is less, the human eye 00 can hardly recognize the light in the region, and the region can be considered to have no bright line problem, so that the problem of the bright line of the large viewing angle of the narrow-bezel display device is improved.
Accordingly, referring to fig. 4, 5 and 7, fig. 7 is an enlarged view of the region QB in fig. 5. When the display device 100 is not lit, a part of the light beam LG4 of the ambient light 01 is incident into the display device, but due to the light scattering particles 31 arranged in the second region 302 of the optical adhesive layer 30, the light scattering particles 31 can further disperse the light beam LG4, and the dispersed light beam LG 4' is emitted to the light shielding material 11 to be absorbed. Even if there is some light reflected on the surface of part of the film layer of the display panel 20, the light reflected by the part will pass through the light scattering particles again, and the light scattering particles will change the propagation path, and will be absorbed by the light shielding material 11 finally. Therefore, compared with the prior art, the light rays finally entering human eyes 00 can be reduced, and the problem of bright lines under a large viewing angle of a narrow-frame display device is solved.
It should be noted that, for most display devices, in an actual production process, the upper polarizer of the upper frame and the upper polarizers of the left and right frames of the display device are usually fully attached (the edge of the upper polarizer is flush with the edge of the color film substrate) or over attached (the edge of the upper polarizer exceeds the edge of the color film substrate), so that when the display device is not lighted, the problem of bright lines appearing on the upper frame and the left and right frames is small; when the display device is lighted, the problem of bright lines may occur in the upper and lower frames and the left and right frames. However, the embodiment of the present invention is described by taking only the area QA (located in the upper frame) when the display device is lit and the area QB (located in the lower frame) when the display device is not lit as an example, and is not limited thereto. That is, in practical applications, no matter the display device is in a lit or unlit state, the light scattering particles 31 can be disposed in the second region 302 of the optical cement layer 30 to improve the bright line problem under a large viewing angle. In addition, the drawings provided in the embodiments of the present invention do not represent true scales, but are provided for convenience of explanation.
According to the display device provided by the invention, the light scattering particles 31 are arranged in the second area 302 of the optical adhesive layer 30, so that the original light path which is emitted to human eyes 00 through the second area 302 is changed, and the light which originally generates bright lines in a bright line area is dispersed to a larger area, so that the content of the light which generates the bright lines in the original bright line area is reduced; most of the dispersed light is absorbed in the light-shielding region 101 of the opposite substrate 10, and the content of light entering the human eye 00 is very small, and the human eye 00 hardly recognizes the light in the region, thereby reducing the problem of bright lines at a large viewing angle of the narrow-bezel display device in visual effect.
In some alternative embodiments, as shown in fig. 8 and fig. 9, fig. 8 is a schematic cross-sectional structure diagram of another display device provided in an embodiment of the present invention, and fig. 9 is a schematic plan structure diagram of the optical adhesive layer in fig. 8. The number of the light scattering particles 31 per unit area is gradually changed from more to less along the direction X from the display area AA to the non-display area NA.
In this embodiment, the display device is turned on and the light scattering particles 31 are the same size. Specifically, along the direction X, the number of the light scattering particles 31 per unit area is gradually decreased, that is, the concentration of the light scattering particles 31 in the second region 302 of the optical adhesive layer 30 is gradually increased from the edge of the optical adhesive layer 30 to the center. When the display device is lighted, light leaked from the backlight enters the human eyes 00 through the second area 302 of the optical adhesive layer 30, and in the invention, the higher the concentration of the light scattering particles 31 is set at the position, which is closer to the human eyes 00, in the second area 302, the more the scattering effect of the area, which is closer to the human eyes 00, on the light can be increased, so that the light is more dispersed, and the dispersed light is absorbed by the light shielding material 11, thereby avoiding entering the human eyes 00 and further reducing the problem of bright lines with large visual angles in visual effect.
In some alternative embodiments, as shown in fig. 10, fig. 10 is a schematic plan view of another optical adhesive layer provided in the embodiments of the present invention. The radius of curvature of the light scattering particles 31 gradually increases from small to large in a direction from the display region to the non-display region.
In the present embodiment, the number of the light scattering particles 31 per unit area is merely used as an example, and may be set according to specific situations in practical applications, and the present invention is not limited thereto. It is understood that, in the same material, the smaller the curvature radius of the light scattering particles 31, the stronger the light scattering degree thereof. Setting the radius of curvature of the light scattering particles 31 to be smaller at a position closer to the human eye 00 in the second region 302 can increase the scattering effect on the light, and disperse the light more, thereby improving the problem of bright lines at a large viewing angle of the display device in visual effect.
In some alternative embodiments, with reference to fig. 11 and 12 in combination with fig. 5, fig. 11 is a schematic cross-sectional structure diagram of another display device provided in an embodiment of the present invention, and fig. 12 is a schematic plan structure diagram of the optical adhesive layer in fig. 11. The display panel 20 includes an upper polarizer 21a, the upper polarizer 21a being located on a side of the display panel 20 close to the opposite substrate 10; the second region 302 includes the first sub-region 30a, the second sub-region 30b surrounding the first sub-region 30a, the third sub-region 30c surrounding the second sub-region 30 b; the upper polarizer 21a has a first boundary 211, and an orthogonal projection of the first boundary 211 on the plane of the opposite substrate 10 is positioned in an orthogonal projection of the second sub-region 30b on the plane of the opposite substrate 10; the number of light scattering particles 31 arranged in a unit area of the second subregion 30b is larger than the number of light scattering particles 31 arranged in a unit area of the first subregion 30a, and the number of light scattering particles 31 arranged in a unit area of the second subregion 30b is larger than the number of light scattering particles 31 arranged in a unit area of the third subregion 30 c.
It should be noted that, in this embodiment, the light scattering particles are disposed on the optical adhesive layer on one side of the display device, and in practical applications, the light scattering particles may be disposed on the optical adhesive layer on two or more sides of the display device according to specific situations, which is not limited in the present invention.
In particular, since the upper polarizer 21a changes the polarization direction of light, a bright line is often conspicuously present at the boundary 211 of the upper polarizer 21a when viewed at a practically large viewing angle. In this embodiment, the light scattering particles 31 with a higher concentration are disposed in the second region 302 corresponding to the second sub-region 30b of the boundary 211 of the upper polarizer 21a, so that the contact degree between the light at the boundary 211 and the light scattering particles 31 can be increased, thereby increasing the scattering degree of the light. In addition, after the light is reflected or refracted many times between the light scattering particles 31 having a high concentration, the light loss increases, and thus the amount of light finally incident to the human eye decreases. Therefore, the problem of bright lines at large viewing angles of the narrow-bezel display device is improved.
In some alternative embodiments, with continued reference to FIGS. 11 and 12, along the direction X from the display area AA to the non-display area NA, the width of the first sub-area 30a is h1, the width of the second sub-area 30b is h2, and 100 μm ≦ h1+ h2 ≦ 750 μm.
In order to ensure a narrow frame of the display device, the value of h1+ h2 is not set too large, otherwise the frame of the display device is enlarged; but at the same time, the setting is not suitable to be too small, otherwise, the process difficulty is increased, the setting of the light scattering particles is not facilitated, and the range of 100-.
In some alternative embodiments, the light scattering particles are spherical, and the diameter D of the spheres is in the range of 1 μm or less and D or less than 50 μm. The light scattering particles with the value range have a high scattering effect on light, and the smaller the diameter D is, the stronger the scattering degree on the light is, so that the problem of large-viewing-angle bright lines of the narrow-frame display device can be effectively solved.
In some alternative embodiments, the light diffusing particles are at least one of polystyrene spheres, polyvinyl alcohol spheres, polyvinyl phenol spheres, and silicon spheres. The light diffusion particles made of the materials can well diffuse light, so that the problem of large-viewing-angle bright lines of a narrow-frame display device is solved. The material of the light diffusion particles of the present invention is not limited to the above, and any particles that can achieve a light diffusion function can be used.
In some alternative embodiments, with reference to fig. 5, the opposite substrate 10 includes an ink layer 12, and the ink layer 12 is disposed in the light-shielding region 101 and located on a side of the opposite substrate 10 close to the optical adhesive layer 30. That is, the light screening material 11 may be the ink layer 12. The ink layer 12 can define a display area of the display device, so that the display panel has a better appearance visual effect; meanwhile, the light inside the display panel 20 can be prevented from being emitted through the non-display area NA and being scattered by the light-absorbing scattering particles, thereby preventing the generation of edge bright lines.
In some alternative embodiments, the counter substrate is a glass cover plate. Leading camera, infrared subassembly etc. are installed usually to display device, and devices such as protection cameras that glass apron set up can be better do not receive the interference of external steam and oxygen, can play the guard action in the physics to display panel 20 simultaneously, ensure that the user has good use and experiences.
In some alternative embodiments, the counter substrate includes a counter substrate and a touch electrode. In order to meet the use requirements of users, the display device generally has a touch function. The touch electrode is positioned on one side of the opposite substrate close to the display panel, so that the realization of a touch function can be ensured; the counter substrate base plate can protect the display panel from being damaged by external force, and meanwhile, a user is guaranteed to have good use experience.
Based on the same conception, the embodiment of the invention also provides a manufacturing method of the display device. For technical effects not described in detail in the manufacturing method, reference may be made to the description of the display device in the above embodiments, and further description is omitted here. For example, fig. 13 is a schematic flowchart of a manufacturing method of a display device according to an embodiment of the present invention. Referring to fig. 13, the manufacturing method includes:
and step S81, providing a display panel. The display panel includes a display area and a non-display area surrounding the display area.
Step S82, providing a counter substrate. The counter substrate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area.
And step S83, forming an optical adhesive layer, wherein the optical adhesive layer comprises a first region and a second region surrounding the first region, and the second region is provided with light scattering particles. Wherein, the optical adhesive layer is positioned on one side of the opposite substrate.
Step S84 is to dispose and bond the counter substrate and the display panel in opposition to each other. In the attaching process, the optical adhesive layer is located between the opposite substrate and the display panel, the orthographic projection of the display area on the plane where the opposite substrate is located in the light-transmitting area, and the orthographic projection of the second area on the plane where the opposite substrate is located in the light-shielding area.
In the present invention, the sequence of step S81 and step S82 is not limited, as long as the display panel and the counter substrate can be provided to facilitate the subsequent manufacturing of the display device.
According to the manufacturing method of the display device, the light scattering particles are arranged in the second area, corresponding to the opposite substrate shading area, of the optical adhesive layer, the original light path which is emitted to human eyes through the second area is changed, and light which generates bright lines in the bright line area is dispersed to a larger area, so that the content of the light which generates the bright lines in the original bright line area is reduced; most of the dispersed light is absorbed in the light-shielding region of the opposite substrate, and the content of light entering human eyes is very small, so that the human eyes can hardly recognize the light in the region, thereby reducing the problem of bright lines with large visual angle in visual effect.
In some alternative embodiments, with reference to fig. 13 and fig. 14, fig. 14 is a schematic flow chart of forming an optical adhesive layer according to an embodiment of the present invention. Step S83 includes:
in step S831, the transparent glue 32 is applied to the light shielding region 101 of the counter substrate 10.
Step S832, spraying the light scattering particles 31 on the transparent glue 32.
In step S833, the optical adhesive layer 30 is formed on the surface of the light scattering particles 31 on the side away from the counter substrate 10.
Step S834 of keeping the pressure in vacuum to make the light scattering particles enter the optical adhesive layer 30.
In the embodiment of the present invention, the optical adhesive layer 30 may be formed by coating. Vacuum pressure maintaining is a common process method, and light scattering particles can better enter the optical adhesive layer under the condition of lower than normal pressure and for a certain time. It is understood that the specific pressure value and the duration may be set according to actual needs, and the present invention is not limited thereto.
According to the manufacturing method of the display device provided by the embodiment of the invention, the light diffusion particles are arranged in the shading area of the opposite substrate by using the transparent glue and adopting a spraying mode. The method is simple and easy in process, and can effectively improve the color cast problem of the display device under a large viewing angle.
In some alternative embodiments, in conjunction with fig. 13, step S83 includes:
providing an optical film layer (not shown);
and bonding the optical adhesive film layer to one side of the opposite substrate to form the optical adhesive layer.
In the embodiment provided by the invention, the optical adhesive layer prepared in advance can be directly bonded to one side of the opposite substrate, so that the optical adhesive layer can be directly formed without a coating mode, the process is simple and easy, and the production efficiency can be improved.
The display device and the manufacturing method of the display device provided by the embodiment of the invention are described in detail, and the principle and the embodiment of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A display device, comprising:
an opposing substrate and a display panel which are arranged oppositely;
the display panel includes a display area and a non-display area surrounding the display area;
the counter substrate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area, and the orthographic projection of the display area on the plane of the counter substrate is positioned in the light-transmitting area;
the display device further comprises an optical adhesive layer located between the counter substrate and the display panel;
the optical adhesive layer comprises a first area and a second area surrounding the first area, and the orthographic projection of the second area on the plane of the opposite substrate is positioned in the shading area;
light scattering particles are arranged in the second region;
the display panel further comprises an upper polarizer, and the upper polarizer is positioned on one side of the display panel close to the opposite substrate;
the second region comprises a first sub-region, a second sub-region surrounding the first sub-region, and a third sub-region surrounding the second sub-region;
the upper polarizer is provided with a first boundary, and the orthographic projection of the first boundary on the plane of the opposite substrate is positioned in the orthographic projection of the second sub-area on the plane of the opposite substrate;
the number of the light scattering particles in the unit area of the second sub-region is greater than the number of the light scattering particles in the unit area of the first sub-region, and the number of the light scattering particles in the unit area of the second sub-region is greater than the number of the light scattering particles in the unit area of the third sub-region.
2. The display device as claimed in claim 1, wherein the first sub-area has a width h1 and the second sub-area has a width h2, 100 μm ≦ h1+ h2 ≦ 750 μm in a direction pointing from the display area to the non-display area.
3. The display device according to claim 1, wherein the light scattering particles are spherical, and a diameter D of the spheres is in a range of 1 μm or less and D or less and 50 μm or less.
4. The display device according to claim 1, wherein the light scattering particles are at least one of polystyrene spheres, polyvinyl alcohol spheres, polyvinyl phenol spheres, and silicon spheres.
5. The display device according to claim 1, wherein the opposite substrate comprises an ink layer disposed in the light-shielding region and on a side of the opposite substrate close to the optical adhesive layer.
6. The display device according to claim 1, wherein the opposite substrate is a glass cover plate.
7. The display device according to claim 1, wherein the counter substrate includes a counter substrate and a touch electrode.
8. A method for manufacturing a display device, comprising:
providing a display panel comprising a display area and a non-display area surrounding the display area;
providing an opposite substrate, wherein the opposite substrate comprises a light-transmitting area and a light-shielding area surrounding the light-transmitting area;
forming an optical adhesive layer, wherein the optical adhesive layer is positioned on one side of the opposite substrate and comprises a first area and a second area surrounding the first area, and light scattering particles are arranged in the second area;
the opposite substrate and the display panel are oppositely arranged and attached, the optical adhesive layer is located between the opposite substrate and the display panel, the orthographic projection of the display area on the plane of the opposite substrate is located in the light-transmitting area, and the orthographic projection of the second area on the plane of the opposite substrate is located in the light-shielding area;
the display panel further comprises an upper polarizer, and the upper polarizer is positioned on one side of the display panel close to the opposite substrate;
the second region comprises a first sub-region, a second sub-region surrounding the first sub-region, and a third sub-region surrounding the second sub-region;
the upper polarizer is provided with a first boundary, and the orthographic projection of the first boundary on the plane of the opposite substrate is positioned in the orthographic projection of the second sub-area on the plane of the opposite substrate;
the number of the light scattering particles in the unit area of the second sub-region is greater than the number of the light scattering particles in the unit area of the first sub-region, and the number of the light scattering particles in the unit area of the second sub-region is greater than the number of the light scattering particles in the unit area of the third sub-region.
9. The method of manufacturing a display device according to claim 8,
the forming of the optical adhesive layer includes:
coating transparent glue on the shading area of the opposite substrate;
spraying the light scattering particles on the transparent adhesive tape;
forming the optical adhesive layer on the surface of one side of the light scattering particles away from the opposite substrate;
and keeping the pressure in vacuum to enable the light scattering particles to enter the optical adhesive layer.
10. The method for manufacturing a display device according to claim 8, wherein the forming of the optical adhesive layer comprises:
providing an optical film layer;
and bonding the optical adhesive film layer to one side of the opposite substrate to form the optical adhesive layer.
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| CN110109287A (en) * | 2019-04-10 | 2019-08-09 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN110286530B (en) * | 2019-06-25 | 2022-04-22 | 京东方科技集团股份有限公司 | Display assembly, display device and display control method thereof |
| CN110492020B (en) * | 2019-08-29 | 2022-12-23 | 京东方科技集团股份有限公司 | Display panel, display device and manufacturing method of display panel |
| CN110488528B (en) * | 2019-08-30 | 2022-03-25 | 昆山国显光电有限公司 | Display device |
| CN113888995B (en) * | 2020-07-03 | 2023-08-29 | 深圳市万普拉斯科技有限公司 | Display device capable of preventing polarized light leakage and electronic equipment |
| CN111708206B (en) * | 2020-07-17 | 2024-03-26 | 合肥鑫晟光电科技有限公司 | Touch display module, manufacturing method thereof and display device |
| CN112002223A (en) * | 2020-08-11 | 2020-11-27 | 武汉华星光电半导体显示技术有限公司 | Display cover plate, preparation method thereof and display device |
| TWI773182B (en) | 2021-03-11 | 2022-08-01 | 瑞儀光電股份有限公司 | Backlight module and display device |
| CN115079464A (en) * | 2021-03-11 | 2022-09-20 | 瑞仪(广州)光电子器件有限公司 | Backlight module and display device |
| CN114509902B (en) | 2022-01-27 | 2023-01-31 | 绵阳惠科光电科技有限公司 | Array substrate, preparation method thereof, display panel and display device |
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