Display module and display device

Abstract

The utility model discloses a display module and a display device. The display module comprises a backlight module and a display panel arranged on the light emitting side of the backlight module. The display panel comprises an array substrate and an electrode substrate which are oppositely arranged, and the electrode substrate is arranged close to one side of the backlight module; the array substrate at least comprises a substrate body, a driving device layer, a color resistance layer and a first shading part, the driving device layer is arranged on the side, facing the electrode substrate, of the substrate body, the color resistance layer is arranged on the side, facing the electrode substrate, of the driving device layer, the color resistance layer comprises a plurality of color resistance blocks arranged in an array mode, a shading area is formed between every two adjacent color resistance blocks, and the first shading part is arranged between every two adjacent color resistance blocks. The first shading part is arranged on the substrate; wherein in the direction, pointing to the electrode substrate, of the array substrate, the first shading part is at least overlapped with the shading area and the photosensitive area of the driving device layer.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] VR (full name in English: Virtual Reality, abbreviated in Chinese: Virtual Reality) head-mounted displays and glasses-type displays are both close-to-eye devices, which require higher resolution (greater than 1000PPI) to enhance immersion and realism. Therefore, the display screen of VR devices has a very large PPI design and a very small pixel size requirement. Therefore, when the CF substrate (electrode substrate) and the Array substrate (array substrate) are bonded together, the bonding accuracy is higher than that of conventional products. In the prior art, bonding accuracy optimization or COA (full name in English: Color Filter on Array) structure is usually used to improve the problem of bonding group misalignment. However, the improvement of bonding accuracy is limited by the equipment capabilities, and the room for improvement is limited; in the COA structure, the black matrix and color resistance are set on the array substrate to improve the color deviation, but it will increase the step difference of the top film layer of the array substrate, thereby causing the problem of poor flatness and uneven alignment of the alignment liquid coating, which ultimately affects the display effect of the panel. Utility Model Content

[0003] The embodiments of the present application provide a display module and a display device, which can improve the color deviation and uneven light emission problems of the panel, improve the quality of the panel, reduce the number of masks, and save costs.

[0004] In a first aspect, an embodiment of the present application provides a display module, comprising a backlight module and a display panel disposed on a light-emitting side of the backlight module, wherein the display panel has a display area;

[0005] The display panel comprises an array substrate and an electrode substrate which are arranged opposite to each other, and the electrode substrate is arranged close to one side of the backlight module;

[0006] The array substrate at least comprises a base substrate, a driving device layer, a color resist layer, and a first light shielding portion, wherein the driving device layer is disposed on a side of the base substrate facing the electrode substrate, the color resist layer is disposed on a side of the driving device layer facing the electrode substrate, the color resist layer comprises a plurality of color resist blocks arranged in an array, a light shielding area is formed between adjacent color resist blocks, and the first light shielding portion is disposed on the base substrate and is located in the display area;

[0007] Wherein, in the direction from the array substrate to the electrode substrate, the first light shielding portion is at least overlapped with the light shielding area and the photosensitive area of ​​the driving device layer.

[0008] In one embodiment, the first light shielding portion includes a first light shielding matrix or a second light shielding matrix, wherein:

[0009] The first light shielding matrix is ​​arranged between the base substrate and the driving device layer;

[0010] The second light shielding matrix is ​​arranged on a side of the base substrate away from the driving device layer.

[0011] In one embodiment, the first light-shielding matrix and the second light-shielding matrix are made of the same material, and the reflectivity of the first light-shielding matrix and the second light-shielding matrix are both less than 10%.

[0012] In one embodiment, the thickness of the first light-shielding matrix and the second light-shielding matrix are both set to be less than 1 um.

[0013] In one embodiment, the first shading matrix and the second shading matrix are made of different materials;

[0014] The reflectivity of the first shading matrix is ​​less than 10%;

[0015] The material of the second light-shielding matrix is ​​set to be an organic black matrix or an inorganic non-metallic black matrix.

[0016] In one embodiment, the driving device layer includes a plurality of thin film transistors arranged in an array, and the thin film transistors include a metal electrode and an active layer;

[0017] The first light shielding portion is arranged to overlap with the light shielding area, the metal electrode, and the channel area of ​​the active layer;

[0018] Wherein, the photosensitive area includes the metal electrode of the thin film transistor and the channel region of the active layer.

[0019] In one embodiment, the driving device layer includes a plurality of thin film transistors arranged in an array, and the thin film transistors include an active layer;

[0020] The thin film transistor further comprises a light-shielding metal, which is arranged on a side of the active layer away from the base substrate, and covers a channel region of the thin film transistor.

[0021] In one embodiment, the display panel further has a frame area, and the frame area is located outside the display area;

[0022] The array substrate further includes a second light shielding portion, and the second light shielding portion is arranged corresponding to the frame area.

[0023] In one embodiment, the first light shielding portion and the second light shielding portion are arranged in the same layer.

[0024] In a second aspect, an embodiment of the present application further provides a display device, which includes the above-mentioned display module.

[0025] Beneficial effect: In the display module provided by the present application, the display panel is located at the light-emitting side of the backlight module, and the display panel includes an array substrate and an electrode substrate arranged relatively to each other, and the electrode substrate is arranged close to the light-emitting side of the backlight module, and the array substrate includes a base substrate, a drive device layer, a color resistance layer and a first light shielding portion; it can be known that by arranging the color resistance layer on one side of the array substrate, not only can the color deviation and uneven light emission problems of the display panel be improved, but also the color resistance on the electrode substrate can be eliminated, so that the flat layer originally arranged on the color resistance can be eliminated, thereby reducing a light mask, simplifying the process of the electrode substrate, and reducing the cost. At the same time, the array substrate and the electrode substrate are inverted, and the first light-shielding portion is arranged on the base substrate, and the first light-shielding portion is at least overlapped with the light-shielding area and the photosensitive area of ​​the driving device layer. Since the function of the first light-shielding portion is equivalent to the outermost BM (black matrix) layer and the metal light-shielding layer in the original structure, the BM (black matrix) layer and the metal light-shielding layer in the display area of ​​the original structure can be eliminated. Therefore, in the display area, the step difference of the outermost layer of the array substrate is reduced, thereby improving the problems of poor flatness and uneven alignment of the alignment liquid coating, thereby improving the display effect of the display panel and improving the quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0027] Figure 1 A first film layer diagram of a display module provided in an embodiment of the present application;

[0028] Figure 2 A second film layer diagram of a display module provided in an embodiment of the present application;

[0029] Figure 3 A film layer diagram of an array substrate provided in an embodiment of the present application;

[0030] Figure 4 A schematic plan view of a first light shielding portion and a second light shielding portion provided in an embodiment of the present application;

[0031] Figure 5 A first process flow chart of a display module provided in an embodiment of the present application;

[0032] Figure 6 A second process flow chart of the display module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as limiting the present application. In addition, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature merely means that the first feature is higher in level than the second feature or that the first feature is lower in level than the second feature, and does not indicate a direct connection relationship.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only, and the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense without specifically limiting the connection method. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] The disclosure below provides many different embodiments to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0038] The embodiments of the present application provide a display module and a display device. The display device may be a VR head-mounted display or VR glasses, etc., and no specific limitation is made here.

[0039] In a first aspect, an embodiment of the present application provides a display module 100. Figures 1 to 3The display module 100 includes a backlight module 1 and a display panel 2 arranged on the light-emitting side of the backlight module 1. The display panel 2 has a display area 2a. The display panel 2 includes an array substrate 21 and an electrode substrate 22 arranged opposite to each other. The electrode substrate 22 is arranged close to the side of the backlight module 1. The array substrate 21 at least includes a base substrate 211, a drive device layer 212, a color resist layer 213 and a first light shielding portion 214. The drive device layer 212 is arranged on the base substrate 211 toward the electrode substrate 214. The color resist layer 213 is arranged on one side of the driving device layer facing the electrode substrate 22, and the color resist layer 213 includes a plurality of color resist blocks arranged in an array, and a shading area is formed between adjacent color resist blocks; the first shading portion 214 is arranged on the base substrate 211 and is located in the display area 2a, wherein, in the direction from the array substrate 21 to the electrode substrate 22, the first shading portion 214 is at least overlapped with the shading area and the photosensitive area of ​​the driving device layer 212.

[0040] In the display module 100 provided in the present application, the display panel 2 is located at the light-emitting side of the backlight module 1, and the display panel 2 includes an array substrate 21 and an electrode substrate 22 that are relatively arranged, and the electrode substrate 22 is arranged close to the light-emitting side of the backlight module 1, and the array substrate 21 includes a base substrate 211, a driving device layer 212, a color resistance layer 213 and a first light shielding portion 214; it can be known that arranging the color resistance layer 213 on one side of the array substrate 21 can not only improve the color deviation and uneven light emission problems of the display panel 2, but also eliminate the color resistance on the electrode substrate 22, so that the flat layer originally arranged on the color resistance can be eliminated, thereby reducing a light mask, simplifying the process of the electrode substrate 22, and reducing Low cost; at the same time, the array substrate 21 and the electrode substrate 22 are inverted, and the first shading portion 214 is arranged on the base substrate 211. The first shading portion 214 is at least overlapped with the shading area and the photosensitive area of ​​the driving device layer 212. Since the function of the first shading portion 214 is equivalent to the outermost BM (black matrix) layer and the metal shading layer in the original structure, the BM (black matrix) layer and the metal shading layer in the display area 2a in the original structure can be eliminated. Therefore, in the display area 2a, the step difference of the outermost layer of the array substrate 21 is reduced, thereby improving the problems of poor flatness and uneven alignment of the alignment liquid coating, thereby improving the display effect of the display panel 2 and improving the quality of the display panel 2.

[0041] The present application does not specifically limit the location of the first light shielding portion 214. The first light shielding portion 214 includes a first light shielding matrix 2141 or a second light shielding matrix 2142, wherein: the first light shielding matrix 2141 is disposed between the base substrate 211 and the driver device layer 212; the second light shielding matrix 2142 is disposed on a side of the base substrate 211 away from the driver device layer 212.

[0042] See also Figure 1 In the first embodiment, the first shading matrix 2141 is disposed between the base substrate 211 and the driving device layer 212. That is, in this embodiment, the first shading matrix 2141 is disposed on the side of the base substrate 211 facing the electrode substrate 22. Figure 5 To explain, the array substrate 21 is first manufactured: a buffer layer is provided on the side of the base substrate 211 facing the electrode substrate 22, the first light shielding matrix 2141 is provided on the buffer layer, and the first light shielding matrix 2141 is provided to overlap at least with the light shielding area and the photosensitive area of ​​the driver device layer 212; a driver device layer 212 is manufactured on the first light shielding matrix 2141, the color resist layer 213 is manufactured on the driver device layer 212, a first flat layer 216 is manufactured on the color resist layer 213, a pixel electrode layer 217 is manufactured on the first flat layer 216, a first passivation layer 218 is manufactured on the pixel electrode layer 217, a common electrode layer 219 is manufactured on the first passivation layer 218, a spacer column 23 is manufactured on the common electrode layer 219, and an alignment liquid is coated on the common electrode layer 219 to form an alignment layer. The array substrate 21 and the electrode substrate 22 are assembled and bonded, and the array substrate 21 and the electrode substrate 22 are inverted.

[0043] In the above process, the flat layer on the original electrode substrate 22 can be eliminated, thereby reducing the light mask, and further simplifying the process of the display module 100 and saving costs; and, in the display area 2a, the outermost BM layer of the original array substrate 21 is replaced by the first shading matrix 2141, and the step difference of the outermost layer of the array substrate 21 is reduced, thereby improving the problems of poor flatness and uneven alignment of the alignment liquid coating, thereby improving the display effect of the display panel 2 and improving the quality of the display panel 2.

[0044] Moreover, the reflectivity of the first shading matrix 2141 is less than 10%; that is, the light emitted by the backlight module 1 is incident perpendicularly to the display panel 2, passes through the electrode substrate 22 and the liquid crystal layer, reaches the array substrate 21, passes through each film layer of the array substrate 21 in turn, and passes through the opening of the first shading matrix 2141, and is emitted from the base substrate 211. The setting of the first shading matrix 2141 can not only reduce the light mask and solve the metal light leakage problem, but also because the reflectivity of the first shading matrix 2141 is less than 10%, it can reduce the light reflected from the surface of the first shading matrix 2141 to the photosensitive area of ​​the driving device layer, thereby avoiding the increase of photoinduced leakage current caused by the light hitting the photosensitive area of ​​the driving device layer, thereby improving the crosstalk problem.

[0045] It should be noted that the material of the first shading matrix 2141 is one of high temperature resistant low-reflective organic matter, metal oxide and metal-non-metal multilayer stacked structure. The metal oxide can be MOx. In the metal-non-metal multilayer stacked structure, the metal can be one of Mo, Cu, Ag, W, Ti, and the non-metal material can be one of SiNx, SiOx, and ITO.

[0046] Since the thickness of the first shading matrix 2141 will also affect the step difference of the outermost layer of the array substrate 21, the thickness of the first shading matrix 2141 is set to be less than 1um. This can minimize the step difference of the outermost layer of the array substrate 21, thereby further improving the problems of poor flatness and uneven alignment of the alignment liquid coating, thereby improving the display effect of the display panel 2 and improving the quality of the display panel 2.

[0047] See also Figure 2 In the second embodiment, the second shading matrix 2142 is arranged on the side of the base substrate 211 away from the driving device layer 212; that is, in this embodiment, the second shading matrix 2142 is arranged on the side of the base substrate 211 facing away from the electrode substrate 22. Figure 6To explain, the array substrate 21 is first manufactured: a buffer layer is provided on the side of the base substrate 211 facing the electrode substrate 22, a driving device layer 212 is manufactured on the buffer layer, a color resist layer 213 is manufactured on the driving device layer 212, a first flat layer 216 is manufactured on the color resist layer 213, a pixel electrode layer 217 is manufactured on the first flat layer 216, a first passivation layer 218 is manufactured on the pixel electrode layer 217, a common electrode layer 219 is manufactured on the first passivation layer 218, a spacer column 23 is manufactured on the common electrode layer 219, and an alignment liquid is coated on the common electrode layer 219 to form an alignment layer. The array substrate 21 and the electrode substrate 22 are assembled and bonded, and the array substrate 21 and the electrode substrate 22 are inverted. A second light-shielding matrix 2142 is provided on a side of the base substrate 211 away from the electrode substrate 22 , and the second light-shielding matrix 2142 at least overlaps with the light-shielding area and the photosensitive area of ​​the driving device layer 212 .

[0048] Since the second shading matrix 2142 is arranged on the side of the base substrate 211 away from the electrode substrate 22, the second shading matrix 2142 will not affect the step difference of the outermost layer of the array substrate 21. In the present application, there is no specific restriction on the thickness and material of the second shading matrix 2142.

[0049] In one embodiment, the second light-shielding matrix 2142 is made of the same material as the first light-shielding matrix 2141 , the reflectivity of the second light-shielding matrix 2142 is less than 10%, and the thickness of the second light-shielding matrix 2142 is set to be less than 1 um.

[0050] In another embodiment, the material of the second light-shielding matrix 2142 is different from that of the first light-shielding matrix 2141 , and the material of the second light-shielding matrix 2142 is set to be an organic black matrix or an inorganic non-metallic black matrix.

[0051] In one embodiment, the driving device layer 212 includes a plurality of thin film transistors 2121 arranged in an array, and the thin film transistor 2121 includes a metal electrode and an active layer; the first light shielding portion 214 is arranged to overlap with the light shielding area, the metal electrode, and the channel area of ​​the active layer; wherein the photosensitive area includes the metal electrode of the thin film transistor 2121 and the channel area of ​​the active layer.

[0052] It should be noted that the first light shielding portion 214 needs to shield the light shielding area, the metal wiring and the channel area of ​​the thin film transistor, so the first light shielding portion 214 needs to be arranged along the gate and drain wiring of the thin film transistor; please refer to Figure 4The first light shielding portion 214 is arranged in a grid shape, which can not only shield the light shielding area, the metal electrode and the photosensitive area of ​​the driving device layer 212, but also simplify the process of the first light shielding portion 214.

[0053] In one embodiment, the driving device layer 212 includes a plurality of thin film transistors 2121 arranged in an array, and the thin film transistor 2121 includes an active layer; the thin film transistor 2121 also includes a shading metal 2122, and the shading metal 2122 is arranged on a side of the active layer away from the base substrate 211, and the shading metal 2122 covers the channel region of the thin film transistor 2121.

[0054] In one embodiment, the display panel 2 further has a frame area 2b, which is located outside the display area 2a; the array substrate 21 further includes a second shading portion 215, which is arranged corresponding to the frame area 2b.

[0055] Furthermore, the first light shielding portion 214 and the second light shielding portion 215 are arranged on the same layer. That is to say, in the actual manufacturing process, the first light shielding portion 214 and the second light shielding portion 215 are made of the same light mask, the first light shielding portion 214 shields the light shielding area, the metal electrode and the photosensitive area of ​​the driving device layer 212, and the second light shielding portion 215 shields the border area 2b. Since the first light shielding portion 214 and the second light shielding portion 215 function as the outermost BM (black matrix) layer and the metal light shielding layer in the original structure, the BM (black matrix) layer and the metal light shielding layer in the original structure can be eliminated, thereby reducing one more light mask and simplifying the manufacturing process of the array substrate 21; at the same time, combined with the above-mentioned "setting the color resistance layer on one side of the array substrate", the flat layer on the original color filter substrate can be eliminated, so that the solution of the present application can reduce two light masks, thereby simplifying the process and reducing costs.

[0056] See also Figure 1 and Figure 2 The display module 100 further includes a spacer column 23 , one end of which is connected to the array substrate 21 and is located in the light shielding area, and the other end of which is connected to the electrode substrate 22 .

[0057] In one embodiment, the array substrate 21 further includes a first flat layer 216, a pixel electrode layer 217, a passivation layer 218 and a common electrode layer 219; the first flat layer 216 is arranged on a side of the color resist layer 213 away from the driving device layer; the pixel electrode layer 217 is arranged on a side of the first flat layer 216 away from the color resist layer 213; the passivation layer 218 is arranged on a side of the first flat layer 216 away from the color resist layer 213 and covers the pixel electrode layer 217; the common electrode layer 219 is arranged on a side of the passivation layer 218 away from the first flat layer 216; wherein one end of the spacer column 23 is arranged on the common electrode layer 219.

[0058] On the second aspect, an embodiment of the present application provides a display device, which includes a display module 100. It should be noted that the display module 100 is configured as the above-mentioned display module 100, that is, the display module 100 has all the embodiments of the above-mentioned display module 100, and the display device also has all the technical features of all the embodiments of the above-mentioned display module 100, and also has all the beneficial effects brought by all the technical features, which will not be repeated here one by one.

[0059] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0060] The above is a detailed introduction to a display module and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that: It comprises a backlight module and a display panel arranged on the light-emitting side of the backlight module, wherein the display panel has a display area; The display panel comprises an array substrate and an electrode substrate which are arranged opposite to each other, and the electrode substrate is arranged close to one side of the backlight module; The array substrate at least comprises a base substrate, a driving device layer, a color resist layer, and a first light shielding portion, wherein the driving device layer is disposed on a side of the base substrate facing the electrode substrate, the color resist layer is disposed on a side of the driving device layer facing the electrode substrate, the color resist layer comprises a plurality of color resist blocks arranged in an array, a light shielding area is formed between adjacent color resist blocks, and the first light shielding portion is disposed on the base substrate and is located in the display area; Wherein, in the direction from the array substrate to the electrode substrate, the first light shielding portion is at least overlapped with the light shielding area and the photosensitive area of ​​the driving device layer.

2. The display module according to claim 1, wherein: The first shading portion includes a first shading matrix or a second shading matrix, wherein: The first light shielding matrix is ​​arranged between the base substrate and the driving device layer; The second light shielding matrix is ​​arranged on a side of the base substrate away from the driving device layer.

3. The display module according to claim 2, wherein: The first shading matrix and the second shading matrix are made of the same material, and the reflectivity of the first shading matrix and the second shading matrix are both less than 10%.

4. The display module according to claim 3, wherein: The thickness of the first shading matrix and the second shading matrix are both set to be less than 1 um.

5. The display module according to claim 2, wherein: The first shading matrix and the second shading matrix are made of different materials; The reflectivity of the first shading matrix is ​​less than 10%; The material of the second light-shielding matrix is ​​set to be an organic black matrix or an inorganic non-metallic black matrix.

6. The display module according to claim 1, wherein: The driving device layer includes a plurality of thin film transistors arranged in an array, and the thin film transistors include metal electrodes and an active layer; The first light shielding portion is arranged to overlap with the light shielding area, the metal electrode, and the channel area of ​​the active layer; Wherein, the photosensitive area includes the metal electrode of the thin film transistor and the channel region of the active layer.

7. The display module according to claim 1, wherein: The driving device layer includes a plurality of thin film transistors arranged in an array, and the thin film transistors include an active layer; The thin film transistor further comprises a light-shielding metal, which is arranged on a side of the active layer away from the base substrate, and covers a channel region of the thin film transistor.

8. The display module according to claim 1, wherein: The display panel also has a frame area, and the frame area is located outside the display area; The array substrate further includes a second light shielding portion, and the second light shielding portion is arranged corresponding to the frame area.

9. The display module according to claim 8, wherein: The first light shielding portion and the second light shielding portion are arranged in the same layer.

10. A display device, characterized in that: Comprising the display module as described in any one of claims 1 to 9.

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