Display module and display device

Abstract

The application provides a display module and a display device, wherein the display module comprises: a display panel, the display panel comprising a display area and an ink area; a cover plate, the cover plate being located on the light-emitting side of the display panel; an adhesive layer, the adhesive layer being located between the display panel and the cover plate; and a light-blocking structure, the light-blocking structure being located on the surface of the display panel close to the cover plate. The application can optimize the screen-off color of the display module and improve the screen-off integral black effect.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display module and a display device. Background Technology

[0002] With the integration of intelligent and internet technologies into automobiles, cars are typically equipped with in-vehicle displays, providing users with a wealth of vehicle information and entertainment features.

[0003] In existing technologies, when a vehicle-mounted display screen is off, there is a significant color difference between the ink area and the display area, resulting in an unsatisfactory unified black effect. Specifically, when the display screen is off, the ink area appears black, while the display area is not pure black but leans towards orange or green or other colors. This is because vehicle-mounted displays are composed of multiple layers of films with different refractive indices. When light of different wavelengths passes through these layers with varying reflectivities, the display screen will exhibit different colors. Summary of the Invention

[0004] In view of this, the present invention provides a display module and a display device to solve the problem that when the above-mentioned vehicle display screen is turned off, the color difference between the ink area and the display area is large, and the overall black effect is not ideal.

[0005] On one hand, the present invention provides a display module, the display module including a display area and an ink area, including: a display panel; a cover plate, the cover plate being located on the light-emitting side of the display panel; an adhesive layer, the adhesive layer being located between the display panel and the cover plate; and a light-shielding structure, the light-shielding structure being located on the surface of the display panel near the cover plate.

[0006] On the other hand, the present invention also provides a display device including the above-described display module.

[0007] Compared with the prior art, the display module and display device provided by the present invention have achieved at least the following beneficial effects: by setting a light-shielding structure on the surface of the display panel near the cover plate, and adjusting the distribution density, distribution thickness, selected material, material color and material shape of the corresponding light-shielding structure for different display modules, the screen-off hue of the display module can be optimized and the screen-off integrated black effect can be improved.

[0008] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0009] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0010] Figure 1 This is a schematic diagram of the structure of a display device based on related technology;

[0011] Figure 2 This is a schematic diagram of the chromaticity coordinates of the display area and ink area of ​​some display devices when the screen is off;

[0012] Figure 3 This is a schematic diagram of the structure of a display module provided in an embodiment of the present invention;

[0013] Figure 4 yes Figure 3 A schematic diagram of section AA' in the middle;

[0014] Figure 5 yes Figure 3 The diagram shows the specific structure of the display module;

[0015] Figure 6 This is a schematic diagram of the structure of another display module provided in an embodiment of the present invention;

[0016] Figure 7 yes Figure 6 A schematic diagram of the BB' section;

[0017] Figure 8 This is a schematic diagram of the structure of another display module provided in an embodiment of the present invention;

[0018] Figure 9 This is a schematic diagram of the structure of another display module provided in an embodiment of the present invention;

[0019] Figure 10 This is a schematic diagram of the structure of another display module provided in an embodiment of the present invention;

[0020] Figure 11 This is a schematic diagram of the structure of another display module provided in an embodiment of the present invention;

[0021] Figure 12 This is a schematic diagram of the structure of another display module provided in an embodiment of the present invention;

[0022] Figure 13 This is a schematic diagram of the structure of another display module provided in an embodiment of the present invention;

[0023] Figure 14This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention.

[0024] Figure label:

[0025] 10 Display Modules

[0026] 11 Display Panel

[0027] 111 Black Matrix Layer

[0028] 112 Planarization layer

[0029] 113 Liquid Crystal Layer

[0030] 114 Array Layers

[0031] 12 Cover plates

[0032] 13 Adhesive layer

[0033] 14. Light-shielding structure

[0034] 15 First substrate

[0035] 16 First Optical Film

[0036] 17 Second substrate

[0037] 18 Ink Layers

[0038] 20 display areas

[0039] 30 Ink Area

[0040] 40 Display devices

[0041] 40' Display device related to related technologies Detailed Implementation

[0042] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0043] The use of terms such as "first," "second," and similar terms in the specific description does not indicate any order, quantity, or importance, but is merely used to distinguish different components. Furthermore, in the description of this invention, terms such as "upper," "lower," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention.

[0044] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features in different embodiments can be combined with each other.

[0045] like Figure 1 As shown, in related technologies, the display device 40' includes a display area 20 and an ink area 30. When the display device 40' is off, the color difference between the display area 20 and the ink area 30 is significant, resulting in an unsatisfactory unified black effect. Specifically, because the display device 40' is composed of multiple layers of films with different refractive indices, light of different wavelengths will display different colors after passing through these multiple layers of films with different reflectivities.

[0046] like Figure 2 As shown, when the display device 40' is off, the ink area 30 is black, while the display area 20 is not pure black, but rather leans towards orange or green or other colors. This is reflected in... Figure 2 In the middle, the chromaticity coordinates of ink region 30 are located at Figure 2 In the chromaticity coordinate system, near the origin, the orange display area 20 has its chromaticity coordinates located at... Figure 2 In the first quadrant of the chromaticity coordinate system, the chromaticity coordinates of the green display area 20 are located at... Figure 2 The second quadrant in the chromaticity coordinate system.

[0047] Specifically, the color difference between display area 20 and ink area 30 when the screen is off is determined by the hue difference of the reflected light from the ambient light when the screen is off. This hue difference can be calculated using chromaticity and luminance. Specifically, the hue difference ΔE between display area 20 and ink area 30 satisfies the following formula:

[0048]

[0049] Among them, L AA To display the brightness of the reflected light in area 20, L ink a represents the brightness of the reflected light in the ink region 30. AA To display the reflected light in area 20 Figure 2 The first chromaticity coordinate in the chromaticity coordinate system, a ink The reflected light in ink area 30 Figure 2The first chromaticity coordinate in the chromaticity coordinate system, b AA To display the reflected light in area 20 Figure 2 The second chromaticity coordinate in the chromaticity coordinate system, b ink The reflected light in ink area 30 Figure 2 The second chromaticity coordinate in the chromaticity coordinate system. Through meticulous and in-depth research, the inventors have addressed the problems existing in the prior art by providing a display module and a display device. The display module includes: a display panel, comprising a display area and an ink area; a cover plate located on the light-emitting side of the display panel; an adhesive layer located between the display panel and the cover plate; and a light-shielding structure located on the surface of the display panel near the cover plate. The display module and display device of this invention can optimize the screen-off hue of the display module and improve the seamless black effect when the screen is off. Figure 3 and Figure 4 As shown, an embodiment of the present invention provides a display module 10 comprising: a display panel 11, an adhesive layer 13, and a cover plate 12 stacked sequentially, and a light-shielding structure 14 located on the surface of the display panel 11 near the cover plate 12. The display module 10 includes a display area 20 and an ink area 30. The display panel 11, adhesive layer 13, and light-shielding structure 14 are all located in the display area 20. The cover plate 12 is located on the light-emitting side of the display panel 11 and simultaneously covers both the display area 20 and the ink area 30 to protect the display panel 11.

[0050] Specifically, the light-shielding structure 14 is distributed inside the adhesive layer 13 and located in the display area 20. The light-shielding structure 14 can be selected according to the existing color of the display area 20 so that the display area 20 appears black when the display module 10 is off. For example, when the display area 20 is originally green, the light-shielding structure 14 can be made of magenta material. Through the principle of color superposition, the hue can be adjusted so that the display area 20 ultimately appears black that is the same as or similar to the ink area 30, thereby optimizing the hue of the display module 10 when the screen is off and improving the effect of a seamless black screen.

[0051] Specifically, adhesive layer 13 is used to bond the display panel 11 and the cover plate 12. Adhesive layer 13 can be OCA (Optically Clear Adhesive). OCA optical adhesive can be made of materials such as acrylate, polyurethane, silicone, and epoxy resin. OCA optical adhesive has advantages such as high transparency, low haze, high bonding strength, weather resistance, and good mechanical properties.

[0052] In some embodiments, such as Figure 5As shown, the display module 10 further includes a first substrate 15 and a first optical film 16. The first substrate 15 is located between the display panel 11 and the cover plate 12, and the first optical film 16 is located between the first substrate 15 and the cover plate 12. A light-shielding structure 14 is also located between the first substrate 15 and the cover plate 12.

[0053] In some embodiments, the first optical film 16 can be a polarizer. When natural light passes through the polarizer, light whose vibration direction is perpendicular to the transmission axis of the polarizer is absorbed, leaving only polarized light whose vibration direction is parallel to the transmission axis of the polarizer, thus controlling the polarization direction of the light beam. Therefore, the polarizer can selectively allow light waves from specific directions to pass through while filtering out light waves from other directions. This allows it to work in conjunction with the light-shielding structure 14 to further optimize the off-screen hue of the display module 10 and improve the overall black-out effect. Furthermore, the polarizer can also filter out unnecessary reflected light, reducing light pollution and ensuring good visibility of the display screen even in bright light environments.

[0054] In some alternative embodiments, the first optical film 16 can also be a filter. Based on phenomena such as light interference, diffraction, absorption, and reflection, the filter selectively transmits or reflects specific wavelengths of light through its optical properties (such as refractive index and absorption coefficient), achieving selective transmission or blocking of colors. This allows it to work in conjunction with the light-shielding structure 14 to correct the off-screen hue of the display area 20 of the display module 10, improving the overall black-out effect. Furthermore, the filter can optimize light utilization, reduce light scattering and reflection, and improve the brightness and clarity of the display module 10.

[0055] Specifically, the adhesive layer 13 is located between the first optical film 16 and the cover plate 12. That is, the first substrate 15 is located between the display panel 11 and the adhesive layer 13. It can be the upper substrate of the display panel 11, used to form the first optical film 16, and also to protect the display panel 11 from physical damage. The first optical film 16 is located between the first substrate 15 and the adhesive layer 13. The light-shielding structure 14 is distributed inside the adhesive layer 13.

[0056] In some embodiments, continue to refer to Figure 5 The display module 10 also includes an ink layer 18 for forming the ink areas 30 of the display module 10. The ink layer 18 can be selected according to the specific needs of the display module 10: organic pigment ink for patterns and decorative coatings; inorganic pigment ink for display modules 10 requiring high durability; or conductive ink for creating touch sensors, circuit patterns, etc. By blocking unwanted light and reflections, the ink layer 18 can significantly improve the contrast of the display module 10, making the image display more vivid and clear. The light-blocking effect of the ink layer 18 can also effectively prevent light leakage from inside the display screen.

[0057] Further reference Figure 5 The display panel 11 can be an LCD (Liquid Crystal Display) panel. Specifically, the display panel 11 has a black matrix layer 111, a planarization layer 112, a liquid crystal layer 113, and an array layer 114 sequentially disposed along the direction opposite to the first optical film 16 on the first substrate 15. The black matrix layer 111 has multiple openings, each containing multiple red (R), green (G), and blue (B) photoresists. The planarization layer 112 can be an OC (overcoat) layer to protect the three colors of photoresists and to perform planarization. The liquid crystal layer 113 includes multiple liquid crystal molecules, whose alignment direction is changed under the action of the electric field of the pixel electrodes controlled by the array layer 114.

[0058] Further reference Figure 5 The display module 10 also includes a second substrate 17. The second substrate 17 can be the lower substrate of the display panel 11. During the fabrication of the display module 10, an array layer 114 is formed on the second substrate 17. In addition, similar to the first substrate 15, the second substrate 17 can also be used to protect the display panel 11 and prevent the display panel 11 from physical damage.

[0059] In some alternative embodiments, the display panel 11 may also be an OLED (Organic Light-Emitting Diode) display panel, an AMOLED (Active-Matrix Organic Light-Emitting Diode) display panel, or a Micro LED display panel, and is not limited thereto.

[0060] In display area 20, the display module 10 is composed of layers such as the cover plate 12, adhesive layer 13, first optical film 16, first substrate 15, display panel 11, and second substrate 17. Furthermore, the display panel 11 is also composed of layers such as a black matrix layer 111, planarization layer 112, liquid crystal layer 113, and array layer 114, and the refractive indices of these layers are not entirely the same. In addition, ambient light is composed of multiple wavelengths. When the display module 10 is off, different wavelengths of ambient light are reflected by the multiple layers of films with different reflectivities, resulting in different colors for different display modules 10. In ink area 30, ambient light is absorbed by ink layer 18, thus appearing black. Therefore, when the display module 10 is off, the color difference between display area 20 and ink area 30 is significant, resulting in an unsatisfactory unified black effect.

[0061] Continue to refer to Figure 2 In related technologies, the first chromaticity coordinate a of ink region 30 inkTypically between -0.3 and 0.3, the second chromaticity coordinate b ink Typically, the chromaticity coordinates are between -0.5 and 0.5, which is close to the origin of the chromaticity coordinates; therefore, ink area 30 appears black. The chromaticity coordinates of the orange display area 20 are located at... Figure 2 In the first quadrant of the chromaticity coordinate system, the chromaticity coordinates of the green display area 20 are located at... Figure 2 The second quadrant in the chromaticity coordinate system.

[0062] Therefore, the display module 10 of the present invention, which includes a light-shielding structure 14, adjusts factors such as the distribution density, distribution thickness, selected material, material color, and material shape of the light-shielding structure 14 to ensure that the first chromaticity coordinate a of the display area 20 is in the off state. AA and the second chromaticity coordinate b AA It also remains within the chromaticity coordinate range of the aforementioned ink region 30.

[0063] Optionally, when the display module 10 of this application is off, the hue difference ΔE between the display area 20 and the ink area 30 is ≤5. When the hue difference between the display area 20 and the ink area 30 meets the above requirement, the color difference between the display area 20 and the ink area 30 when the display module 10 is off can be effectively reduced, improving the overall black effect. In some other optional embodiments, when the display module 10 is off, the hue difference ΔE between the display area 20 and the ink area 30 can also be equal to 4, 3, 2, 1, 0.1, etc. By further adjusting the distribution density, distribution thickness, selected material, material color, and material shape of the light-shielding structure 14, a lower color difference between the display area 20 and the ink area 30 can be achieved, further improving the overall black effect.

[0064] Furthermore, in related technologies, the off-screen color of display area 20 may need to be consistent with that of ink area 30, but depending on different requirements, display area 20 may also need to display various other colors. For example, ink layer 18 may be made of materials of other colors such as dark blue or dark purple, instead of black. Alternatively, depending on other requirements, the ratio of the first chromaticity coordinate and the second chromaticity coordinate of display area 20 may need to meet a specific range, such as -6 to 0. In this case, in order to reduce the color difference between display area 20 and ink area 30 when display module 10 is off, display area 20 should also maintain the corresponding color, or the ratio of the first chromaticity coordinate and the second chromaticity coordinate should also meet the corresponding specific range. Specifically, this can be achieved by adjusting factors such as the distribution density, distribution thickness, selected material, material color, and material shape of light-shielding structure 14.

[0065] In some optional embodiments, the haze of the display area 20 of the display module 10 is less than 20%. Haze refers to the ability of a material to scatter light, representing the degree to which light passing through the material is scattered, and is usually expressed as a percentage. The higher the haze, the more cloudy the material appears; the lower the haze, the clearer the material appears. Specifically, the haze of the display module 10 of this application satisfies the following formula: Haze = Amount of scattered light / Total amount of transmitted light, where scattered light is light whose outgoing direction and the direction perpendicular to the plane of the display panel 11 form an angle greater than 2.5°. The haze of this application meets the above requirements, which allows the display module 10 to reduce the color difference when the screen is off while ensuring the clarity of the display module 10 during display. Specifically, the haze can be made less than 20% by adjusting factors such as the distribution density, distribution thickness, selected material, material color, and material shape of the light-shielding structure 14. To further improve the clarity of the display module 10, the haze of the display area 20 of the display module 10 can optionally be 15%, 10%, 5%, or 1%.

[0066] In some alternative embodiments, the transmittance loss of the display area 20 of the display module 10 is less than 10%. Transmittance loss refers to the loss of light energy caused by a material when light passes through it, that is, the reduction in light intensity after passing through the material. Transmittance loss is usually expressed as a percentage, representing the degree of absorption and scattering of light by the material. Specifically, the transmittance loss of the display module 10 of this application satisfies the following formula: Transmittance loss = (Light source brightness - Transmitted light brightness) / Light source brightness. The transmittance loss of this application meets the above requirements, which allows the display module 10 to reduce the color difference when the screen is off while ensuring the transparency of the display module 10 during display. Specifically, the above haze can be made less than 10% by adjusting the distribution density, distribution thickness, selected material, material color, and material shape of the light-shielding structure 14. To further improve the transparency of the display module 10 during display, optionally, the transmittance loss of the display area 20 of the display module 10 can be equal to 8%, 6%, 5%, 4%, 2%, or 1%, etc.

[0067] In some embodiments, continue to refer to Figure 3The light-shielding structure 14 is distributed within the adhesive layer 13. Specifically, the light-shielding structure 14 distributed within the adhesive layer 13 is particle-shaped. The particle-shaped light-shielding structure 14 may include one or more of metal oxides, pigments, or carbon black, but is not limited thereto. The shape of the light-shielding structure 14 may include one or more of granular, columnar, prismatic, or mesh-like shapes, but is not limited thereto. The particle-shaped light-shielding structure 14 can be uniformly distributed in the adhesive layer 13 to ensure consistent display of the display module 10 and avoid color unevenness. The light-shielding structure 14 offers a variety of material options to meet the needs of different display modules 10 to reduce differences in always-on display. The diverse shape design of the light-shielding structure 14 provides flexible design options to meet the needs of different display modules 10 to reduce differences in always-on display.

[0068] In some alternative embodiments, reference is made to Figure 6 and Figure 7 Another display module 10 provided in this embodiment of the invention includes: a display panel 11, an adhesive layer 13, and a cover plate 12 stacked sequentially, and a light-shielding structure 14 located on the surface of the display panel 11 near the cover plate 12. Specifically, the display module 10 includes a display area 20 and an ink area 30. The display panel 11, the adhesive layer 13, and the light-shielding structure 14 are all located in the display area 20. The cover plate 12 is located on the light-emitting side of the display panel 11 and simultaneously covers the display area 20 and the ink area 30 to protect the display panel 11. The light-shielding structure 14 is distributed inside the cover plate 12. The above-mentioned arrangement reduces the color difference when the display module 10 is off, and also helps to increase the structural strength and stability between layers, prevents layer slippage or separation, and improves the mechanical performance and durability of the display module. Other aspects of these embodiments can be referred to in the foregoing embodiments, and repeated details will not be described again.

[0069] refer to Figure 8Another display module 10 provided in this embodiment of the invention includes: a display panel 11, an adhesive layer 13, and a cover plate 12 stacked sequentially, and a light-shielding structure 14 located between the adhesive layer 13 and the cover plate 12. The light-shielding structure 14 located between the adhesive layer 13 and the cover plate 12 is in the form of a thin film. The material of the thin-film light-shielding structure 14 includes one or both of pigments and carbon black, but is not limited thereto. The thin-film light-shielding structure 14 can be prepared by various processes such as coating, spraying, and hot pressing, adapting to existing manufacturing processes and simplifying production processes. The thickness and uniformity of the film can be precisely controlled by advanced manufacturing processes to ensure consistent display of the display module 10 and avoid color unevenness problems. The light-shielding structure 14 offers a variety of material options to meet the needs of different display modules 10 to reduce differences in screen-off display. The thin-film light-shielding structure 14 can also provide a certain degree of protection for the internal components of the display module 10, preventing the intrusion of dust, moisture, and other contaminants. Other aspects of these embodiments can be referred to in the foregoing embodiments, and repeated details will not be repeated.

[0070] In some alternative embodiments, reference is made to Figure 9 Another display module 10 provided in this embodiment of the invention includes: a display panel 11, an adhesive layer 13, and a cover plate 12 stacked sequentially, and a light-shielding structure 14 located between the display panel 11 and the adhesive layer 13. The light-shielding structure 14 located between the display panel 11 and the adhesive layer 13 is in the form of a thin film. Other aspects of these embodiments can be referred to the foregoing embodiments, and repeated details will not be described again.

[0071] In some alternative embodiments, reference is made to Figure 10 Another display module 10 provided in this embodiment of the invention includes: a display panel 11, an adhesive layer 13, and a cover plate 12 stacked sequentially, and light-shielding structures 14 distributed simultaneously inside the cover plate 12 and the adhesive layer 13. In this embodiment, the light-shielding structures 14 are all particle-shaped. Simultaneously providing particle-shaped light-shielding structures 14 inside the cover plate 12 and the adhesive layer 13 further reduces the color difference of the display module 10 when the screen is off, while also avoiding the instability of the particle-shaped light-shielding structures 14 independent of other film layers, increasing the mechanical strength between layers, preventing interlayer slippage or separation, and improving the overall structural stability of the display module. Furthermore, the above structure can effectively control the propagation path of the scattered light from the display panel 11 when the display module 10 is displaying, reducing light reflection and scattering inside the display module 10, and enhancing the display effect. Other aspects of these embodiments can be referred to in the foregoing embodiments, and repeated details will not be elaborated further.

[0072] refer to Figure 11Another display module 10 provided in this embodiment of the invention includes: a display panel 11, an adhesive layer 13, and a cover plate 12 stacked sequentially, and a light-shielding structure 14 located between the display panel 11 and the adhesive layer 13, and another light-shielding structure 14 located between the adhesive layer 13 and the cover plate 12. In this embodiment, the light-shielding structures 14 are all thin-film in shape. The two-layer thin-film light-shielding structures 14 further reduce the color difference when the display module 10 is off, while also avoiding the instability of particle-shaped light-shielding structures 14 independent of other film layers, enhancing the adhesion and mechanical strength between the film layers, preventing slippage or separation between film layers, and improving the overall structural stability. Furthermore, the double-layer thin-film light-shielding structure 14 can be implemented using the same manufacturing process, simplifying the preparation process of the light-shielding structure 14. The double-layer thin-film light-shielding structure 14 can also provide further protection for the components inside the display module 10, preventing the influence of moisture, dust, and ultraviolet rays on the display module 10. Other aspects of these embodiments can be referred to in the foregoing embodiments, and repeated details will not be elaborated further.

[0073] In some alternative embodiments, reference is made to Figure 12 Another display module 10 provided in this embodiment of the invention includes: a display panel 11, an adhesive layer 13, a cover plate 12, and a light-shielding structure 14 stacked sequentially. The light-shielding structure 14 includes a first light-shielding structure 141 and a second light-shielding structure 142. The first light-shielding structure 141 is distributed inside the cover plate 12, and the second light-shielding structure 142 is located between the adhesive layer 13 and the cover plate 12. Specifically, the first light-shielding structure 141 is particle-shaped, and the material may include one or more of metal oxides, pigments, or carbon black; the shape may include one or more of granular, columnar, prismatic, or mesh-like structures. The second light-shielding structure 142 is thin-film-shaped, and the material may include one or two of pigments or carbon black. The arrangement of the two light-shielding structures 14 can simultaneously combine the advantages of particle-shaped and thin-film-shaped light-shielding structures 14. Other aspects of these embodiments can be referred to the foregoing embodiments, and repeated details will not be elaborated further.

[0074] In some alternative embodiments, reference is made to Figure 13Another display module 10 provided in this embodiment of the invention includes: a display panel 11, an adhesive layer 13, a cover plate 12, and a light-shielding structure 14 stacked sequentially. The light-shielding structure 14 includes a first light-shielding structure 141 and a second light-shielding structure 142. The first light-shielding structure 141 is distributed inside the cover plate 12, and the second light-shielding structure 142 is located between the adhesive layer 13 and the display panel 11. Specifically, the first light-shielding structure 141 is particle-shaped, and the second light-shielding structure 142 is film-shaped. The selection of the material and shape of the first light-shielding structure 141 can refer to the aforementioned embodiments, and the selection of the material of the second light-shielding structure 142 can also refer to the aforementioned embodiments, and will not be repeated here. The above two light-shielding structures 14 can simultaneously take into account the advantages of both particle-shaped and film-shaped light-shielding structures 14. Other aspects of these embodiments can refer to the aforementioned embodiments, and repeated details will not be repeated here.

[0075] In some alternative embodiments, the present application may also provide a plurality of light-shielding structures 14, which may be in the form of particles and / or films, as long as these light-shielding structures 14 are located on the surface of the display panel 11 near the cover plate 12.

[0076] In some embodiments, when the display area 20 is green when the screen is off, the light-shielding structure 14 is magenta. Through color superposition principles and hue adjustment design, the display area 20 can ultimately present a black that is the same as or similar to the ink area 30, thereby optimizing the screen-off hue of the display module 10 and improving the seamless black effect when the screen is off. In this case, the light-shielding structure 14 made of metal oxide material can include one or both of nano-sized iron oxide or cobalt oxide, but is not limited to these; it only needs to be magenta. The light-shielding structure 14 made of pigment material can be magenta pigment, but is not limited to these.

[0077] In some embodiments, when the display area 20 is blue when the screen is off, the light-shielding structure 14 is yellow. Through color superposition principles and hue adjustment design, the display area 20 can ultimately present a black that is the same as or similar to the ink area 30, thereby optimizing the screen-off hue of the display module 10 and improving the seamless black effect when the screen is off. In this case, the light-shielding structure 14 made of metal oxide material may include one or more of nano-sized sodium peroxide, mercuric oxide, or vanadium pentoxide, but is not limited to these, as long as it is yellow. The light-shielding structure 14 made of pigment material can be made of yellow pigment, but is not limited to this.

[0078] In some embodiments, when the display area 20 is magenta when the screen is off, the light-shielding structure 14 is green. Through the principle of color superposition and hue adjustment design, the display area 20 can ultimately present a black that is the same as or similar to the ink area 30, thereby optimizing the screen-off hue of the display module 10 and improving the all-black effect when the screen is off. At this time, the light-shielding structure 14 made of metal oxide material can include one or more of nano-sized copper oxide, chromium trioxide, or ferrous oxide, but is not limited to these, as long as it is green. The light-shielding structure 14 made of pigment material can be green pigment, but is not limited to these.

[0079] The display module provided by the present invention optimizes the screen-off hue and improves the screen-off integrated black effect by setting a light-shielding structure on the surface of the display panel near the cover plate and adjusting the distribution density, distribution thickness, selected material, material color and material shape of the corresponding light-shielding structure for different display modules.

[0080] refer to Figure 14 In another aspect, the present invention provides a display device 40, including the display module 10 described above. The display device 40 can be any product or component with display function, such as an in-vehicle display screen, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Specific implementation methods and technical effects of the display device 40 can be found in the embodiments of the display module 10 described above; repeated details will not be elaborated further.

[0081] In summary, the display module and display device provided by the present invention optimize the screen-off hue of the display module and improve the screen-off integrated black effect by setting a light-shielding structure on the surface of the display panel near the cover plate and adjusting the distribution density, distribution thickness, selected material, material color and material shape of the corresponding light-shielding structure for different display modules.

[0082] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A display module, the display module comprising a display area and an ink area, characterized in that, include: Display panel; A cover plate, located on the light-emitting side of the display panel, covering both the display area and the ink area; An adhesive layer is located between the display panel and the cover plate; A light-shielding structure is located on the surface of the display panel near the cover plate. The display panel, the adhesive layer, and the light-shielding structure are all located in the display area. The light-shielding structure is selected based on the existing color of the display area and the hue is adjusted using the principle of color superposition. By adjusting one or more of the following combinations of the distribution density, distribution thickness, material, material color, or material shape of the light-shielding structure, the hue difference ΔE between the display area and the ink area is ≤5.

2. The display module according to claim 1, characterized in that, The display module also includes: A first substrate is located between the display panel and the cover plate; A first optical film is located between the first substrate and the cover plate; The light-shielding structure is located between the first substrate and the cover plate.

3. The display module according to claim 2, characterized in that, The first optical film is a polarizer or a filter.

4. The display module according to claim 2, characterized in that, The adhesive layer is located between the first optical film and the cover plate; The light-shielding structure is distributed on at least one side of the adhesive layer.

5. The display module according to claim 1, characterized in that, The light-shielding structure is distributed inside the cover plate and / or inside the adhesive layer.

6. The display module according to claim 1, characterized in that, The haze of the display area is less than 20%; The transmittance loss of the display area is less than 10%.

7. The display module according to claim 1, characterized in that, At least a portion of the light-shielding structure is particle-like; the light-shielding structure includes one or more of metal oxides, pigments, or carbon black; the shape of the light-shielding structure includes one or more of granular, columnar, prismatic, or mesh-like structures; and / or At least a portion of the light-shielding structure is in the form of a thin film; the material of the light-shielding structure includes one or both of pigments and carbon black.

8. The display module according to claim 7, characterized in that, When the display area is green when the screen is off, the light-shielding structure is magenta. The metal oxide includes one or both of nano-sized iron oxide or cobalt oxide; and / or the pigment is a rose-red pigment.

9. The display module according to claim 7, characterized in that, When the display area is blue when the screen is off, the light-blocking structure is yellow; The metal oxide includes one or more of nano-sized sodium peroxide, mercuric oxide, or vanadium pentoxide; and / or the pigment is a yellow pigment.

10. The display module according to claim 7, characterized in that, When the display area is off and is magenta, the light-shielding structure is green; The metal oxide includes one or more of nano-sized copper oxide, chromium trioxide, or ferrous oxide; and / or the pigment is a green pigment.

11. A display device, characterized in that, Includes the display module according to any one of claims 1 to 10.

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