Display module and display device

Abstract

The present invention discloses a display module and a display device, belonging to the field of display technology, wherein the display module comprises a display panel and a cover plate located on one side of a light emitting surface of the display panel; the cover plate comprises a reflection adjustment layer on the side facing the display panel, and the entire surface of the reflection adjustment layer is arranged on the cover plate; the reflection adjustment layer comprises a shielding layer on the side facing the display panel, and the shielding layer comprises a hollow area; in a direction perpendicular to the plane where the display module is located, the hollow area at least overlaps with the display area of ​​the display panel; the refractive index of the cover plate is n1, and the refractive index of the reflection adjustment layer is n2; wherein 0≤︱n1‑n2︱≤0.3. The display device comprises the above-mentioned display module. The present invention can achieve the effect of reducing the difference in reflectivity between the area where the shielding layer is located and the area outside the shielding layer, so as to improve the problem of poor one-piece black effect, which is conducive to ensuring the overall one-piece black effect of the display module and meeting the high-specification requirements of users for one-piece black.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a display module and a display device. Background Art

[0002] With the development of display technology, the application of displays is becoming more and more extensive. People not only have higher and higher requirements for display quality, but also have more extreme requirements for the appearance and presentation of display devices. In many application scenarios, current display devices should present clear and gorgeous pictures when in use, and act as decorations when the screen is off. In particular, the attention and requirements for "integrated black" for car-mounted, mobile phone and tablet computer displays are getting higher and higher. Among them, "integrated black" is an evaluation of the effect of the cover plate fitting product. It means that when the display product is off and the screen is not powered, the observer cannot see the boundary between the display area and the frame area of ​​the product, and the overall color is consistent black, that is, under normal circumstances, when the display device is off, the display area and the surrounding non-display area are black. The integrated black effect can greatly improve the static beauty of the display product, make the product surface look more beautiful, more luxurious, and more technological, improve the quality of the display product from the appearance, and bring a better experience to consumers. However, in most cases in the prior art, the display product is caused by the difference in reflectivity and reflection hue caused by the external ambient light, resulting in color difference between the display area and the surrounding non-display area, which can easily affect the visual integrated black effect.

[0003] Therefore, it is a technical problem that needs to be urgently solved by technical personnel in this field to provide a display module and a display device that can reduce the color difference between the display area and the frame area when the screen is off, improve the integrated black effect of the display, and help meet users' high-specification requirements for integrated black. Summary of the invention

[0004] In view of this, the present invention provides a display module and a display device to solve the problem of poor visual integrated black effect of display products in the prior art when the screen is off.

[0005] The present invention discloses a display module, comprising: a display panel and a cover plate located on one side of a light emitting surface of the display panel; the cover plate comprises a reflection adjustment layer on the side facing the display panel, and the entire surface of the reflection adjustment layer is arranged on the cover plate; the reflection adjustment layer comprises a shielding layer on the side facing the display panel, and the shielding layer comprises a hollow area; in a direction perpendicular to the plane where the display module is located, the hollow area at least overlaps with the display area of ​​the display panel; the refractive index of the cover plate is n1, and the refractive index of the reflection adjustment layer is n2; wherein 0≤︱n1-n2︱≤0.3.

[0006] Based on the same inventive concept, the present invention also discloses a display device, which includes the above-mentioned display module.

[0007] Compared with the prior art, the display module and display device provided by the present invention achieve at least the following beneficial effects:

[0008] The display module provided by the present invention includes a display panel and a cover plate located on the side of the light-emitting surface of the display panel, and the cover plate is used to protect the display panel. The side of the cover plate facing the display panel also includes a shielding layer, and the shielding layer can be a material with a light-shielding function. The shielding layer includes a hollow area, and the shielding layer with a light-shielding function can be only arranged in an area other than the display area of ​​the display panel, which is used to improve the edge light leakage phenomenon of the display module, which is beneficial to improving the display quality. The present invention sets a reflection adjustment layer on the side of the cover plate facing the display panel, and the reflection adjustment layer is arranged on the cover plate on the whole surface, that is, a reflection adjustment layer with a whole-surface structure is arranged between the light-emitting surface of the display panel and the cover plate, and between the shielding layer and the cover plate, and the reflection adjustment layer is located in both the area where the shielding layer is located and the area where the display panel is located. The present invention sets the refractive index of the cover plate to n1, and the refractive index of the reflection adjustment layer to n2, 0≤︱n1-n2︱≤0.3, that is, the refractive index of the reflection adjustment layer set on the cover plate is basically the same as that of the cover plate, and the absolute value of the difference in refractive index between the two is between 0-0.3. By setting the refractive index of the reflection adjustment layer close to the cover plate, and the reflection adjustment layer close to the refractive index of the cover plate is closest to the cover plate in the direction perpendicular to the plane where the display module is located, it is ensured that the reflection effect of the external ambient light at the interface between the cover plate and the reflection adjustment layer is consistent, so as to achieve the effect of reducing the reflectivity difference between the area where the shielding layer is located and the area outside the shielding layer, so as to improve the problem of poor integrated black effect, which is conducive to ensuring the overall integrated black effect of the display module and meeting the user's high-specification requirements for integrated black. And because the reflection adjustment layer of the present invention is set on the side of the cover plate facing the display panel, the color difference between the hollow area of ​​the shielding layer and other areas of the display module in the off-screen state without power can be reduced, which is conducive to improving the overall hue difference of the display module and ensuring the display quality.

[0009] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

[0010] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0012] Figure 1 is a schematic diagram of a planar structure of a display module provided by an embodiment of the present invention;

[0013] Figure 2 yes Figure 1A schematic diagram of the cross-sectional structure along the A-A' direction;

[0014] Figure 3 yes Figure 1 Another schematic diagram of the cross-sectional structure along the A-A' direction;

[0015] Figure 4 is another schematic diagram of a planar structure of a display module provided by an embodiment of the present invention;

[0016] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure along the B-B' direction;

[0017] Figure 6 is a curve diagram of resistivity corresponding to different doping parameters when the reflection adjustment layer is made of indium tin oxide and titanium niobium oxide in this embodiment;

[0018] Figure 7 yes Figure 4 Another cross-sectional structure schematic diagram along the B-B' direction;

[0019] Figure 8 yes Figure 4 Another cross-sectional structure schematic diagram along the B-B' direction;

[0020] Fig. 9 is a schematic diagram of a curve of the refractive index of the indium tin oxide material used in the reflection adjustment layer of this embodiment under different wavelengths of visible light;

[0021] Fig.10 is a schematic diagram of the refractive index curve corresponding to different wavelengths of visible light of the reflection adjustment layer of this embodiment using the polymer material of 3,4-ethylenedioxythiophene;

[0022] Fig.11 It is a schematic diagram of the planar structure of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] 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 components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0024] 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.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0026] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0027] It is obvious to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention. Therefore, the present invention is intended to cover modifications and variations of the present invention that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present invention can be combined with each other without contradiction.

[0028] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of a planar structure of a display module provided by an embodiment of the present invention, Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure along the A-A' direction (it can be understood that in order to clearly illustrate the structure of this embodiment, Figure 1 The display module 000 provided in this embodiment includes: a display panel 10 and a cover plate 20 (not filled in the figure) located on the side of the light emitting surface 10E of the display panel 10;

[0030] The side of the cover plate 20 facing the display panel 10 includes a reflection adjustment layer 30 , and the reflection adjustment layer 30 is entirely disposed on the cover plate 20 ;

[0031] The side of the reflection adjustment layer 30 facing the display panel includes a shielding layer 40, and the shielding layer 40 includes a hollow area 40K; in a direction Z perpendicular to the plane where the display module 000 is located, the hollow area 40K at least overlaps with the display area AA of the display panel 10;

[0032] The refractive index of the cover plate 20 is n1, and the refractive index of the reflection adjustment layer 30 is n2; wherein, 0≤︱n1-n2︱≤0.3.

[0033] Specifically, the display module 000 provided in this embodiment includes a display panel 10 and a cover plate 20 located on one side of a light emitting surface 10E of the display panel 10. Optionally, the display panel 10 may include a display area AA, and the display area AA is used to set display pixels of the display panel 10 to form a display screen; optionally, the display panel 10 may be a liquid crystal display panel or an organic light emitting display panel or other types of display panels, which is not limited in this embodiment. The light emitting surface 10E of the display panel 10 may be understood as the surface of the display panel 10 for the observer to watch and present the display screen. The cover plate 20 is arranged on one side of the light emitting surface 10E of the display panel 10, and the cover plate 20 is used to protect the display panel 10. Optionally, in this embodiment, the area of ​​the cover plate 20 may be larger than the area of ​​the display panel 10, that is, when the cover plate 20 is arranged on one side of the light emitting surface 10E of the display panel 10, the cover plate 20 has an area beyond the edge of the display panel 10, so that the cover plate 20 can protect the display panel 10 in all directions.

[0034] The cover plate 20 of the present embodiment further includes a shielding layer 40 on the side facing the display panel 10. Optionally, the shielding layer 40 may be an ink material with a light-shielding function, and the shielding layer 40 includes a hollow area 40K. In a direction Z perpendicular to the plane where the display module 000 is located, the hollow area 40K at least overlaps with the display area AA of the display panel 10, that is, the shielding layer 40 with a light-shielding function may be disposed only in an area other than the display area AA of the display panel 10. The shielding layer 40 may be used to improve light leakage at the edge of the display module 000, which is beneficial to improving the display quality.

[0035] In the related art, the side of the cover plate facing the display panel is generally fixed and bonded to the display panel directly through optical glue, at least within the display area of ​​the display panel, and the remaining area beyond the display area of ​​the display panel is generally provided with a shielding layer with a shielding function, that is, the shielding layer with a shielding function such as ink material and the optical glue are arranged in different areas on the side of the cover plate facing the display panel, and the cover plate is generally a glass material with a whole surface structure. When the display module is not powered on, there will still be external ambient light passing through the side of the cover plate away from the display panel and entering the area where the shielding layer and the area where the optical glue are located, and reflecting respectively. Since the shielding layer and the optical glue are made of different materials and have different refractive indices, the reflectivity of the reflected light in the area where the shielding layer and the area where the optical glue are located are also different. The calculation formula for the reflectivity is (n01-n02) 2 / (n01+n02) 2, n01 and n02 are the refractive indices of the two media. The reflectivity of the ambient light in the area where the shielding layer is located is calculated by the refractive index of the cover plate and the refractive index of the shielding layer material, while the reflectivity of the ambient light in the area where the optical glue is located is calculated by the refractive index of the cover plate and the refractive index of the optical glue material. Therefore, the observer can clearly observe the boundary between the area where the shielding layer is located and the area where the optical glue is located on the side of the cover plate away from the display panel, which affects the integrated black effect of the display module.

[0036] In order to solve the above problems, in this embodiment, a reflection adjustment layer 30 is arranged on the side of the cover plate 20 facing the display panel 10, and the reflection adjustment layer 30 is arranged on the cover plate 20 in its entirety, that is, a reflection adjustment layer 30 with a whole-surface structure is arranged between the light emitting surface 10E of the display panel 10 and the cover plate 20, and between the shielding layer 40 and the cover plate 20, and the reflection adjustment layer 30 is located in both the area where the shielding layer 40 is located and the area where the display panel 10 is located; optionally, the area of ​​the reflection adjustment layer 30 can be the same as that of the cover plate 20, that is, the reflection adjustment layer 30 is arranged on the cover plate 20 in its entirety and the edge of the reflection adjustment layer 30 can be basically flush with the edge of the cover plate 20. In this embodiment, the refractive index of the cover plate 20 is set to n1, and the refractive index of the reflection adjustment layer 30 is set to n2, 0≤︱n1-n2︱≤0.3, that is, the reflection adjustment layer 30 set on the entire surface of the cover plate 20 has a substantially consistent refractive index with the cover plate 20, and the absolute value of the difference in refractive index between the two is between 0-0.3. By setting the refractive index of the reflection adjustment layer 30 to be close to the cover plate 20, and the reflection adjustment layer 30 having a refractive index close to that of the cover plate 20 is closest to the cover plate 20 in the direction Z perpendicular to the plane where the display module 000 is located, it is ensured that the reflection effect of the external ambient light at the interface between the cover plate 20 and the reflection adjustment layer 30 is consistent, so as to achieve the effect of reducing the reflectivity difference between the area where the shielding layer 40 is located and the area outside the shielding layer 40 (such as the hollow area 40K of the shielding layer 40), so as to improve the problem of poor one-piece black effect, which is beneficial to ensuring the overall one-piece black effect of the display module 000 and meeting the user's high-specification requirements for one-piece black. Furthermore, since the entire reflection adjustment layer 30 of the present embodiment is disposed on the side of the cover plate 20 facing the display panel 10, the color difference between the hollow area 40K of the shielding layer 40 and other areas of the display module 000 can be reduced when the display module 000 is in the off-screen state without power, which is beneficial to improving the overall hue difference of the display module 000 and ensuring the display quality.

[0037] It is understandable that the present embodiment does not specifically limit the material of the reflection adjustment layer 30, and can be any material whose refractive index is close to that of the cover plate 20, and the absolute value of the difference is between 0 and 0.3. Optionally, if the cover plate 20 is made of glass, and the refractive index of glass is generally about 1.5, the reflection adjustment layer 30 can be made of a material with a refractive index between 1.2 and 1.8, and the present embodiment does not limit this.

[0038] Optionally, the reflection adjustment layer 30 of the present embodiment can be set to have conductivity. Since the reflection adjustment layer 30 is arranged on the side of the cover plate 20 facing the display panel 10, the refractive index of the reflection adjustment layer 30 can be set close to the cover plate 20 to improve the integrated black effect. At the same time, the electrostatic that may exist in the module can be guided out by the conductive reflection adjustment layer 30, and the reflection adjustment layer 30 arranged on the entire surface is conducive to increasing the speed of electrostatic conduction, which is conducive to improving the anti-static effect. Further optionally, the reflection adjustment layer 30 of the present embodiment can also be a conductive material that meets the above-mentioned refractive index range, such as the material of the reflection adjustment layer 30 includes any one or two of metal oxides such as indium tin oxide (ITO), antimony tin oxide (ATO), titanium niobium oxide (TNO) or organic conductive polymer materials such as 3,4-ethylenedioxythiophene polymer (PEDOT), which can make the refractive index close to the refractive index of the glass material of the cover plate 20, improve the integrated black effect, and can also be set on the cover plate 20 The reflection adjustment layer 30 plays a role in guiding away the static electricity of the module, which is conducive to improving the anti-static effect of the module.

[0039] It is understandable that the figure of this embodiment only illustrates the structure of the display module 000 exemplarily. In specific implementation, the structure of the display module 000 includes but is not limited to this, and may also include a film layer structure of the display panel 10, etc., which will not be elaborated in this embodiment.

[0040] In some optional embodiments, please continue to refer to Figure 1 and Figure 2 In this embodiment, the material used to make the shielding layer 40 includes conductive ink.

[0041] This embodiment explains that the material of the shielding layer 40 can be ink. During the manufacturing process, the ink can be printed on the side of the reflection adjustment layer 30 away from the cover plate 20, and at least a light-transmissive hollow area 40K is left to ensure that after the display panel 10 is subsequently assembled, the area where the display area AA of the display panel 10 is located is not blocked by the shielding layer 40. Optionally, the material of the shielding layer 40 of this embodiment can be a conductive ink material, and the area where the shielding layer 40 under the cover plate 20 is located can be assembled with other structures of the display module 000, such as an electrostatic protection structure, and then the static electricity can be conducted to the structure assembled later through the shielding layer 40 of conductive ink to be grounded and guided out, thereby realizing the anti-static function of the module.

[0042] In some optional embodiments, please continue to refer to Figure 1 and Figure 2In this embodiment, the side of the display panel 10 facing the reflection adjustment layer 30 includes an optical adhesive layer 50 , and the optical adhesive layer 50 fills the hollow area 40K; the display panel 10 is adhered and fixed to the reflection adjustment layer 30 through the optical adhesive layer 50 .

[0043] This embodiment explains that when the display panel 10 and the cover plate 20 are assembled, the optical adhesive layer 50 can be used to bond and fix the cover plate 20 on which the reflection adjustment layer 30 has been made to the display panel 10. Since the refractive index of the optical adhesive layer 50 is generally around 1.5, the optical adhesive layer 50 can not only fix the cover plate 20 and the display panel 10, but also set the refractive index of the optical adhesive layer 50 to be as close as possible to the refractive index of the cover plate 20 and the reflection adjustment layer 30, thereby reducing the refractive index difference between the cover plate 20, the reflection adjustment layer 30, and the optical adhesive layer 50, so that the refractive index of the reflection adjustment layer 30 and the optical adhesive layer 50 bonded together can be close to the refractive index of the cover plate 20, which is beneficial to reduce the reflectivity of the external ambient light at the interface of the optical adhesive layer 50, weaken the reflection phenomenon of the display module 000, and ensure the display effect of the display module 000.

[0044] Optionally, the optical adhesive layer 50 of the present embodiment is made of materials including an optical adhesive material and a plurality of conductive particles doped in the optical adhesive material, so that a static conductive path can be formed between the reflection adjustment layer 30, the optical adhesive layer 50, and the display panel 10. The display panel 10 can be connected to the reflection adjustment layer 30 through the conductive optical adhesive layer 50 to conduct electricity, thereby conducting away the static electricity generated by the display panel 10, thereby improving the anti-static effect of the module.

[0045] Optionally, the conductive optical adhesive layer 50 of this embodiment can be set to have a resistance value close to that of the reflection adjustment layer 30, which is beneficial for allowing the static electricity on the display panel 10 to be conducted to the reflection adjustment layer 30 under the cover plate 20 through the conductive optical adhesive layer 50 with the resistance value, thereby conducting away the static electricity.

[0046] Optional, such as Figure 1 and Figure 3 As shown, Figure 3 yes Figure 1Another cross-sectional structural diagram along the A-A' direction in the figure, the manufacturing materials of the optical adhesive layer 50 of this embodiment include an optical adhesive material 501 and a plurality of conductive particles 502 doped in the optical adhesive material 501, and the conductive particles 502 may include a particle structure such as polystyrene sulfonic acid (PSS), metal mesh wire, nano silver or antistatic agent material. When manufacturing the conductive optical adhesive layer 50 of this embodiment, the conductive particles 502 may be uniformly dispersed in the optical adhesive material 501 by mechanical stirring, so that the conductivity of the conductive optical adhesive layer 50 of this embodiment is more uniform. Alternatively, the optical adhesive material 501 and the conductive particles 502 may be mixed by multiple mixing, so that the conductive particles 502 may be more uniformly dispersed in the optical adhesive material 501, so as to ensure the conductive effect of the optical adhesive layer 50. This embodiment does not limit the manufacturing process of the optical adhesive layer 50.

[0047] In some optional embodiments, please refer to Figure 4 and Figure 5 , Figure 4 is another schematic diagram of a planar structure of a display module provided by an embodiment of the present invention, Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure along the BB' direction (it can be understood that in order to clearly illustrate the structure of this embodiment, Figure 4 Transparency filling is performed), in this embodiment, the display module 000 includes a display area AA (ie, the display area AA of the display panel 10) and a non-display area NA, and the shielding layer 40 is located in the non-display area NA;

[0048] The reflection adjustment layer 30 includes a first portion 301 and a second portion 302 . The first portion 301 is located in the non-display area NA, and the second portion 302 is located in the display area AA. The resistance of the first portion 301 is smaller than that of the second portion 302 .

[0049] This embodiment explains that the reflection adjustment layer 30 disposed entirely on the side of the cover plate 20 facing the display panel 10 may include a second portion 302 located in the display area AA of the display module 000, i.e., located in the display area of ​​the display panel 10, and a first portion 301 located in the non-display area NA of the display module 000. It can be understood that Figure 4 and Figure 5In the embodiment, the first part 301 and the second part 302 of the reflection adjustment layer 30 are filled with different patterns to distinguish the areas where the first part 301 and the second part 302 are located, which does not mean that the first part 301 and the second part 302 of the reflection adjustment layer 30 are separate independent structures. In specific implementation, the first part 301 and the second part 302 of the reflection adjustment layer 30 can be an integral structure or a split structure, which is not limited in this embodiment. In the reflection adjustment layer 30 set in this embodiment, the first part 301 located in the non-display area NA and the second part 302 located in the display area AA have different resistance values, specifically, the resistance value of the first part 301 is less than the resistance value of the second part 302, that is, the resistance value of the first part 301 located in the non-display area NA is lower, and the resistance value of the second part 302 located in the display area AA is higher. Since the material with a lower resistance value has a performance closer to that of a metal, the resistance value of the second part 302 located in the display area AA is set relatively high, so as to avoid the second part 302 in the display area AA having too low resistance value causing the same metal performance in the display area AA. In order to improve the shielding effect, if a touch function layer is provided in the display panel 10 or between the display panel 10 and the cover plate 20, it is possible to prevent the second portion 302 in the display area AA from having too low a resistance value and affecting the touch performance of the display module 000 in the display area AA; and in this embodiment, the first portion 301 in the non-display area NA is provided with a lower resistance value, which can improve the conductive performance of the first portion 301, and further, when an anti-static structure (not shown in the figure) is provided at the shielding layer 40 of the conductive ink in the non-display area NA, static electricity can be accelerated through the first portion 301 with a lower resistance value, which is beneficial to improving the overall anti-static effect of the module.

[0050] Optionally, the materials used to make the first part 301 and the second part 302 of the reflection adjustment layer 30 in this embodiment can be different. The first part 301 and the second part 302 can be made on the surface of the cover plate 20 in steps. For example, the first part 301 with a lower resistance value can be made of indium tin oxide (ITO) and the second part 302 with a higher resistance value can be made of titanium niobium oxide (TNO). Alternatively, the first part 301 and the second part 302 can also be made of other materials with different resistivities to achieve different resistance values ​​between the two. This embodiment is not limited here.

[0051] Optionally, the material of the first part 301 of the reflection adjustment layer 30 in this embodiment may be the same as the material of the second part 302. By setting the manufacturing process of the first part 301 to be different from the manufacturing process of the second part 302, the resistance values ​​of the two parts are different, such as Figure 6 As shown, Figure 6 is a curve diagram of resistivity corresponding to different doping parameters when the reflection adjustment layer is made of indium tin oxide and titanium niobium oxide in this embodiment, Figure 6 The figure shows the four different materials with different oxygen doping contents (O 2) or the corresponding resistivity curves under different oxygen / argon doping (Ar+O2), where curve L1 represents indium tin oxide ITO, curve L2 represents titanium niobium oxide 5TNO, curve L3 represents titanium niobium oxide 10TNO, and curve L4 represents titanium niobium oxide 15TNO. The horizontal axis represents the oxygen doping amount (O 2 ) or the amount of oxygen / argon (Ar+O2) doped, the ordinate represents the resistivity, Figure 6 It can be seen that, assuming that the material used to make the first part 301 of the reflection adjustment layer 30 is the same as that used to make the second part 302, such as indium tin oxide ITO, the oxygen doping amount of the first part 301 can be controlled to be smaller than that of the second part 302, so that the resistivity of the first part 301 can be smaller than that of the second part 302. Then, when the first part 301 and the second part 302 are manufactured using the same process, the first part 301 with a smaller resistance value and the second part 302 with a larger resistance value can be obtained, which is beneficial to reducing the manufacturing difficulty of the entire reflection adjustment layer 30.

[0052] It can be understood that this embodiment is only an example of the manufacturing materials of the first part 301 and the second part 302 of the reflection adjustment layer 30. In specific implementation, the materials and process technology of the reflection adjustment layer 30 include but are not limited to these, and can also be other setting structures, which will not be described in detail in this embodiment.

[0053] Optionally, although the first portion 301 of the reflection adjustment layer 30 located in the non-display area NA and the second portion 302 located in the display area AA in this embodiment have different resistance values, they can be integrally formed during the manufacturing process, which is beneficial to ensure the integrity of the reflection adjustment layer 30 disposed on the entire surface, reduce the manufacturing difficulty of the reflection adjustment layer 30 on one side of the cover plate 20, and improve the manufacturing efficiency.

[0054] In some optional embodiments, please refer to Figure 4 and Figure 7 , Figure 7 yes Figure 4 Another cross-sectional structural diagram along the BB' direction, in this embodiment, the display module 000 includes a display area AA (ie, the display area AA of the display panel 10) and a non-display area NA, and the shielding layer 40 is located in the non-display area NA;

[0055] The reflection adjustment layer 30 includes a first portion 301 and a second portion 302 , wherein the first portion 301 is located in the non-display area NA, and the second portion 302 is located in the display area AA;

[0056] Along a direction Z perpendicular to the plane where the display module 000 is located, a thickness D1 of the first portion 301 is greater than a thickness D2 of the second portion 302 .

[0057] This embodiment explains that the reflection adjustment layer 30 disposed entirely on the side of the cover plate 20 facing the display panel 10 may include a second portion 302 located in the display area AA of the display module 000, i.e., located in the display area of ​​the display panel 10, and a first portion 301 located in the non-display area NA of the display module 000. It can be understood that the materials of the first portion 301 and the second portion 302 of the reflection adjustment layer 30 in this embodiment may be the same or different. Figure 7 The first part 301 and the second part 302 are made of the same material for illustration. In specific implementation, the first part 301 and the second part 302 of the reflection adjustment layer 30 can be an integrated structure or a separate structure, which is not limited in this embodiment. In this embodiment, along the direction Z perpendicular to the plane where the display module 000 is located, the thickness D1 of the first part 301 is greater than the thickness D2 of the second part 302, that is, the thickness D2 of the second part 302 located in the display area AA is set to be thinner, which can enhance the penetration rate of light in the display area AA in the second part 302, thereby helping to improve the display effect of the display area AA; and the thickness D1 of the first part 301 located in the non-display area NA is set to be thicker, which can make the thicker first part 301 have a smaller resistance value than the thinner second part 302. Since the smaller the resistance value, the better the conductive performance, the thicker thickness D1 of the first part 301 can speed up the static electricity conduction speed within the non-display area NA and enhance the anti-static ability of the module. Since the display module in the non-display area NA does not need to be displayed, even if the thickness D1 of the first part 301 is thicker, it can avoid affecting the display effect.

[0058] In some optional embodiments, please refer to Figure 4 and Figure 8 , Figure 8 yes Figure 4 Another cross-sectional structural diagram along the BB' direction, in this embodiment, the display module 000 includes a display area AA (ie, the display area AA of the display panel 10) and a non-display area NA, and the shielding layer 40 is located in the non-display area NA;

[0059] The reflection adjustment layer 30 includes a first portion 301 and a second portion 302 , wherein the first portion 301 is located in the non-display area NA, and the second portion 302 is located in the display area AA;

[0060] The refractive index of the first portion 301 is n21, the refractive index of the second portion 302 is n22, and the refractive index of the cover plate 20 is n1, and |n22-n1|<|n21-n1|.

[0061] This embodiment explains that the reflection adjustment layer 30 disposed entirely on the side of the cover plate 20 facing the display panel 10 may include a second portion 302 located in the display area AA of the display module 000, i.e., located in the display area of ​​the display panel 10, and a first portion 301 located in the non-display area NA of the display module 000. It can be understood that Figure 8 The first part 301 and the second part 302 of the reflection adjustment layer 30 are filled with different patterns to distinguish the areas where the first part 301 and the second part 302 are located. The first part 301 and the second part 302 of this embodiment can be separate independent structures. In specific implementation, the first part 301 and the second part 302 of the reflection adjustment layer 30 can be made of different materials. For example, the first part 301 can be made of indium tin oxide (ITO) or antimony tin oxide (ATO) material, and the second part 302 can be made of 3,4-ethylenedioxythiophene polymer (PEDOT) material. For visible light of the same wavelength, the refractive index of indium tin oxide (ITO) or antimony tin oxide (ATO) material is greater than the refractive index of 3,4-ethylenedioxythiophene polymer (PEDOT) material. In specific implementation, other different materials can also be selected to make the first part 301 and the second part 302, and this embodiment is not limited to this.

[0062] In this embodiment, the refractive index of the first portion 301 is set to n21, and the refractive index of the second portion 302 is set to n22, and |n22-n1|<|n21-n1|, that is, the refractive index of the reflection adjustment layer 30 is set as close to the refractive index n1 of the cover plate 20 as much as possible, and the refractive index n22 of the second portion 302 located in the display area AA is set to be closer to the refractive index n1 of the cover plate 20 than the refractive index n21 of the first portion 301 located in the non-display area NA, that is, the refractive index n22 of the second portion 302 is closer to the refractive index n1 of the cover plate 20. The absolute value of the difference in refractive index n1 of the cover plate 20 is smaller than the absolute value of the difference in refractive index n21 of the first portion 301 and the refractive index n1 of the cover plate 20, so that the refractive index n22 of the second portion 302 in the display area AA can be closer to the refractive index of the cover plate 20 material. Since the cover plate 20 is arranged adjacent to the second portion 302 of the display area AA, the smaller the difference in refractive index between the second portion 302 and the cover plate 20, the lower the reflectivity. The calculation formula of the reflectivity in the display area AA of this embodiment is (n22-n1) 2 / (n22+n1) 2 , which can reduce the reflection effect of the display area AA of the display module 000, which is beneficial to improving the display effect of the display area AA of the display module 000. Moreover, since the display module in the non-display area NA does not need to display, even if the refractive index n21 of the first part 301 is slightly different from the refractive index n1 of the cover plate 20, it can avoid affecting the display effect.

[0063] like Fig. 9 and Fig.10 As shown, Fig. 9: is a schematic diagram of the refractive index curve corresponding to different wavelengths of visible light when the reflection adjustment layer of this embodiment is made of indium tin oxide material. Fig.10 : is a curve diagram of the refractive index of the polymer material of 3,4-ethylenedioxythiophene used in the reflection adjustment layer of this embodiment under different wavelengths of visible light, wherein the horizontal axis represents the wavelength of visible light in nm (nanometers), and the vertical axis represents the refractive index. Fig. 9 and Fig.10 As shown, if the first part 301 is made of indium tin oxide material, it is assumed that its refractive index is about 1.8 for visible light of 500nm, and if the second part 302 is made of 3,4-ethylenedioxythiophene polymer material, it is assumed that its refractive index is also about 1.47 for visible light of 500nm, which is closer to the refractive index of 1.5 of the cover plate 20 glass than the first part 301, which is beneficial to ensure the display effect of the display area AA.

[0064] In some alternative embodiments, please refer to Fig.11 , Fig.11 1 is a schematic diagram of a planar structure of a display device provided in an embodiment of the present invention. The display device 111 provided in this embodiment includes the display module 000 provided in the above embodiment of the present invention. Fig.11 The embodiment only takes a mobile phone as an example to illustrate the display device 111. It can be understood that the display device 111 provided in the embodiment of the present invention can be a computer, a television, a car display device or other display device 111 with a display function, and the present invention does not specifically limit this. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the display module 000 provided in the embodiment of the present invention. For details, please refer to the specific description of the display module 000 in the above embodiments, and this embodiment will not be repeated here.

[0065] It can be seen from the above embodiments that the display module and display device provided by the present invention achieve at least the following beneficial effects:

[0066] The display module provided by the present invention includes a display panel and a cover plate located on the side of the light-emitting surface of the display panel, and the cover plate is used to protect the display panel. The side of the cover plate facing the display panel also includes a shielding layer, and the shielding layer can be a material with a light-shielding function. The shielding layer includes a hollow area, and the shielding layer with a light-shielding function can be only arranged in an area other than the display area of ​​the display panel, which is used to improve the edge light leakage phenomenon of the display module, which is beneficial to improving the display quality. The present invention sets a reflection adjustment layer on the side of the cover plate facing the display panel, and the reflection adjustment layer is arranged on the cover plate on the whole surface, that is, a reflection adjustment layer with a whole-surface structure is arranged between the light-emitting surface of the display panel and the cover plate, and between the shielding layer and the cover plate, and the reflection adjustment layer is located in both the area where the shielding layer is located and the area where the display panel is located. The present invention sets the refractive index of the cover plate to n1, and the refractive index of the reflection adjustment layer to n2, 0≤︱n1-n2︱≤0.3, that is, the refractive index of the reflection adjustment layer set on the cover plate is basically the same as that of the cover plate, and the absolute value of the difference in refractive index between the two is between 0-0.3. By setting the refractive index of the reflection adjustment layer close to the cover plate, and the reflection adjustment layer close to the refractive index of the cover plate is closest to the cover plate in the direction perpendicular to the plane where the display module is located, it is ensured that the reflection effect of the external ambient light at the interface between the cover plate and the reflection adjustment layer is consistent, so as to achieve the effect of reducing the reflectivity difference between the area where the shielding layer is located and the area outside the shielding layer, so as to improve the problem of poor integrated black effect, which is conducive to ensuring the overall integrated black effect of the display module and meeting the user's high-specification requirements for integrated black. And because the reflection adjustment layer of the present invention is set on the side of the cover plate facing the display panel, the color difference between the hollow area of ​​the shielding layer and other areas of the display module in the off-screen state without power can be reduced, which is conducive to improving the overall hue difference of the display module and ensuring the display quality.

[0067] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display module, characterized in that: include: A display panel and a cover plate located on a light emitting surface side of the display panel; The side of the cover plate facing the display panel includes a reflection adjustment layer, and the entire surface of the reflection adjustment layer is disposed on the cover plate; The reflection adjustment layer includes a shielding layer on a side facing the display panel, and the shielding layer includes a hollow area; in a direction perpendicular to the plane where the display module is located, the hollow area at least overlaps with the display area of ​​the display panel; The refractive index of the cover plate is n1, and the refractive index of the reflection adjustment layer is n2; wherein 0≤︱n1-n2︱≤0.3; The display module includes a display area and a non-display area, and the shielding layer is located in the non-display area; the reflection adjustment layer includes a first portion and a second portion, the first portion is located in the non-display area, and the second portion is located in the display area; The resistance value of the first part is smaller than the resistance value of the second part; and / or, along a direction perpendicular to the plane where the display module is located, the thickness of the first part is greater than the thickness of the second part; and / or, the refractive index of the first part is n21, the refractive index of the second part is n22, and |n22-n1|<|n21-n1|.

2. The display module according to claim 1, characterized in that: The shielding layer is made of conductive ink.

3. The display module according to claim 1, characterized in that: The reflection adjustment layer has conductivity.

4. The display module according to claim 1, characterized in that: The side of the display panel facing the reflection adjustment layer comprises an optical adhesive layer, and the optical adhesive layer is filled in the hollow area; the display panel is adhered and fixed to the reflection adjustment layer through the optical adhesive layer.

5. The display module according to claim 4, characterized in that: The optical adhesive layer is made of an optical adhesive material and a plurality of conductive particles doped in the optical adhesive material; A static electricity conducting path is formed among the reflection adjustment layer, the optical adhesive layer, and the display panel.

6. The display module according to claim 1, characterized in that: The first part is made of a material different from the second part.

7. The display module according to claim 1, characterized in that: The first portion and the second portion are integrally formed.

8. The display module according to claim 1, characterized in that: The reflection adjustment layer is made of any one or two of indium tin oxide, antimony tin oxide, titanium niobium oxide, and a polymer of 3,4-ethylenedioxythiophene.

9. A display device, characterized in that: A display module comprising any one of claims 1-8.

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