Display module and display device

Abstract

The invention provides a display module and a display device, and the display module comprises a display panel which comprises a display region and an ink region; the cover plate is located on the light emitting side of the display panel; the bonding layer is located between the display panel and the cover plate; the shading structure is located on the surface of the side, close to the cover plate, of the display panel. The screen-off hue of the display module can be optimized, and the screen-off integrated black effect is improved.

Description

Technical Field

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

[0002] With the integration of intelligence and Internet technology with automobiles, cars are usually equipped with on-board displays, providing users with rich vehicle information and entertainment functions.

[0003] In the prior art, when the car display screen is turned off, the color difference between the ink area and the display area is large, and the integrated black effect is not ideal. Specifically, when the car display screen is turned off, the ink area is black, while the display area is not pure black, but tends to be other colors such as orange or green. This is because the car display screen is composed of multiple layers of film layers with different refractive indices. When light of different wavelengths passes through multiple layers of film layers with different reflectivity, the display screen will show 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-mounted display screen is turned off, the color difference between the ink area and the display area is large and the integrated black effect is not ideal.

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

[0006] On the other hand, the present invention further provides a display device, comprising 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: by setting a shading structure on the surface of the display panel close to the cover plate, and adjusting the distribution density, distribution thickness, selected material, material color and material shape of the corresponding shading structure for different display modules, the screen-off hue of the display module can be optimized and the integrated black effect when the screen is off can be improved.

[0008] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0010] Figure 1 It is a structural schematic diagram of a display device of the related art;

[0011] Figure 2 Schematic diagram of chromaticity coordinates of display area and ink area of ​​some display devices in related art when the screen is turned off;

[0012] Figure 3 is a structural schematic diagram of a display module provided by an embodiment of the present invention;

[0013] Figure 4 yes Figure 3 Schematic diagram of the AA' section;

[0014] Figure 5 yes Figure 3 The specific structural diagram of the module is shown in the figure;

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

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

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

[0018] Fig. 9 is a structural schematic diagram of another display module provided by an embodiment of the present invention;

[0019] Fig.10 is a structural schematic diagram of another display module provided by an embodiment of the present invention;

[0020] Fig.11 is a structural schematic diagram of another display module provided by an embodiment of the present invention;

[0021] Fig.12 is a structural schematic diagram of another display module provided by an embodiment of the present invention;

[0022] Fig.13 is a structural schematic diagram of another display module provided by an embodiment of the present invention;

[0023] Fig.14It is a structural schematic diagram of a display device provided by an embodiment of the present invention.

[0024] Reference numerals:

[0025] 10 Display module

[0026] 11 Display Panel

[0027] 111 Black matrix layer

[0028] 112 planarization layer

[0029] 113 Liquid crystal layer

[0030] 114 Array Layer

[0031] 12 Cover

[0032] 13 Adhesive layer

[0033] 14 Shading structure

[0034] 15. First substrate

[0035] 16. The first optical film

[0036] 17 Second substrate

[0037] 18 Ink layer

[0038] 20 Display area

[0039] 30 Ink Area

[0040] 40 Display device

[0041] 40' Related art display device DETAILED DESCRIPTION

[0042] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0043] The words "first", "second" and the like used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. In addition, in the description of the present invention, the orientation or position relationship indicated by the terms "upper" and "lower" are based on the orientation or position relationship shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and features in different embodiments may be combined with each other.

[0045] like Figure 1 As shown, in the related art, the display device 40' includes a display area 20 and an ink area 30. When the display device 40' of the related art is turned off, the color difference between the display area 20 and the ink area 30 is large, and the integrated black effect is not ideal. Specifically, since the display device 40' is composed of multiple layers of film layers with different refractive indices, light of different wavelengths passes through multiple layers of film layers with different reflectivity, and the display device 40' will present different colors.

[0046] like Figure 2 As shown, when the display device 40' is turned off, the ink area 30 is black, while the display area 20 is not pure black, but tends to be other colors such as orange or green. Figure 2 In the figure, the chromaticity coordinates of the ink region 30 are located at Figure 2 In the chromaticity coordinate system, the chromaticity coordinate of the orange display area 20 is located near the origin. Figure 2 In the first quadrant of the chromaticity coordinate system, the chromaticity coordinate of the green display area 20 is located at Figure 2 The second quadrant in the chromaticity coordinate system.

[0047] Specifically, the color difference between the display area 20 and the ink area 30 when the screen is off is determined by the hue difference of the reflected light formed by the reflection environment when the screen is off, where the hue difference can be calculated by chromaticity and brightness. Specifically, the hue difference ΔE between the display area 20 and the ink area 30 satisfies the following formula:

[0048]

[0049] Among them, L AA is the brightness of the reflected light in the display area 20, L ink is the brightness of the reflected light from the ink area 30, a AA The reflected light of the display area 20 is Figure 2 The first chromaticity coordinate in the chromaticity coordinate system, a ink is the reflected light of the ink area 30 Figure 2The first chromaticity coordinate in the chromaticity coordinate system, b AA The reflected light of the display area 20 is Figure 2 The second chromaticity coordinate in the chromaticity coordinate system, b ink is the reflected light of the ink area 30 Figure 2 The second chromaticity coordinate in the chromaticity coordinate system. Through careful and in-depth research, the inventor provides a display module and a display device for the problems existing in the prior art. Among them, the display module includes: a display panel, the display panel includes a display area and an ink area; a cover plate, the cover plate is located on the light-emitting side of the display panel; an adhesive layer, the adhesive layer is located between the display panel and the cover plate; a shading structure, the shading structure is located on the surface of the display panel close to the cover plate. The display module and the display device of the present invention can optimize the screen-off hue of the display module and enhance the integrated black effect when the screen is off. Figure 3 and Figure 4 As shown, a display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13 and a cover plate 12 which are stacked in sequence, and a light shielding structure 14 located on the surface of the display panel 11 close to the cover plate 12. 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 covers the display area 20 and the ink area 30 at the same time to protect the display panel 11.

[0050] Specifically, the shading structure 14 is distributed inside the adhesive layer 13 and is located in the display area 20. The shading 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 turned off. For example, when the display area 20 originally appears green, the shading structure 14 can select a rose red material, and through the principle of color superposition, the hue adjustment design can be performed, so that the display area 20 can finally present the same or similar black as the ink area 30, thereby optimizing the off-screen hue of the display module 10 and improving the off-screen integrated black effect.

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

[0052] In some embodiments, 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. The 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 will be absorbed, leaving only polarized light whose vibration direction is parallel to the transmission axis of the polarizer, thereby controlling the polarization direction of the light beam. Thus, the polarizer can selectively pass light waves in a specific direction and filter out light waves in other directions, so that it can cooperate with the shading structure 14 to further optimize the off-screen hue of the display module 10 and enhance the off-screen integrated black effect. In addition, the polarizer can also filter unnecessary reflected light and reduce light pollution, so that the display screen still has good visibility in a strong light environment.

[0054] In some alternative embodiments, the first optical film 16 can also be a filter. Based on the interference, diffraction, absorption and reflection of light, the filter selectively transmits or reflects light of a specific wavelength through its optical properties (such as refractive index, absorption coefficient, etc.), thereby achieving selective passage or blocking of colors, so that it can cooperate with the shading structure 14 to correct the off-screen hue of the display area 20 of the display module 10 and enhance the off-screen integrated black effect. In addition, the filter can optimize the utilization of light, 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, and can be an upper substrate of the display panel 11, used to form the first optical film 16, and can also be used to protect the display panel 11 and prevent the display panel 11 from being physically damaged. 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 further includes an ink layer 18 for forming an ink region 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 that require high durability; or conductive ink for making touch sensors, circuit patterns, etc. The ink layer 18 can significantly improve the contrast of the display module 10 by blocking unnecessary light and reflection, making the image display more vivid and clear. The light shielding effect of the ink layer 18 can also effectively prevent light leakage inside the display screen.

[0057] Further, continue to refer to Figure 5 , the display panel 11 may 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, which are sequentially arranged along the first substrate 15 away from the first optical film 16. The black matrix layer 111 has a plurality of openings, and the openings have a plurality of red (R), green (G), and blue (B) photoresists. The planarization layer 112 may be an OC (overcoat, protection) layer to protect the three colors of photoresists and play a planarization role. The liquid crystal layer 113 includes a plurality of liquid crystal molecules, and the arrangement direction of the liquid crystal molecules is changed under the action of the electric field of the pixel electrode controlled by the array layer 114.

[0058] Further, continue to refer to Figure 5 The display module 10 further includes a second substrate 17. The second substrate 17 may be a lower substrate of the display panel 11. When the display module 10 is prepared, an array layer 114 is formed on the second substrate 17. In addition, like the first substrate 15, the second substrate 17 may also be used to protect the display panel 11 and prevent the display panel 11 from being physically damaged.

[0059] In some alternative embodiments, the display panel 11 can 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, but is not limited thereto.

[0060] In the display area 20, since the display module 10 is composed of the above-mentioned cover plate 12, adhesive layer 13, first optical film 16, first substrate 15, display panel 11 and second substrate 17 and other film layers. Furthermore, the display panel 11 is also composed of film layers such as black matrix layer 111, flattening layer 112, liquid crystal layer 113 and array layer 114, and the refractive indexes of the above film layers are not exactly the same. In addition, the ambient light is also composed of light of multiple bands. When the display module 10 is turned off, different display modules 10 will present different colors after the ambient light of different bands is reflected through multiple layers of film layers with different reflectivity. In the ink area 30, the ambient light is absorbed by the ink layer 18 and then appears black. As a result, when the display module 10 is turned off, the color difference between the display area 20 and the ink area 30 is large, and the integrated black effect is not ideal.

[0061] Continue to refer Figure 2 In the related art, the first chromaticity coordinate a of the ink area 30 is inkUsually between -0.3 and 0.3, the second chromaticity coordinate b ink Usually, it is between -0.5 and 0.5, which is closer to the origin of the chromaticity coordinates, so the 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 coordinate of the green display area 20 is located at Figure 2 The second quadrant in the chromaticity coordinate system.

[0062] Therefore, the display module 10 including the shading structure 14 of the present invention can adjust the distribution density, distribution thickness, selected material, material color and material shape of the shading structure 14 to make the first chromaticity coordinate a of the display area 20 when the screen is turned off. AA And the second chromaticity coordinate b AA The chromaticity coordinate range of the ink region 30 is also maintained.

[0063] Optionally, when the display module 10 of the present application is turned 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 requirements, the color difference between the display area 20 and the ink area 30 when the display module 10 is turned off can be effectively reduced, thereby improving the integrated black effect. In other optional embodiments, when the display module 10 is turned 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 shading structure 14 to achieve a lower color difference between the display area 20 and the ink area 30, thereby further improving the integrated black effect.

[0064] In addition, in the related art, in addition to the screen-off color of the display area 20 being consistent with the ink area 30, according to different needs, the display area 20 may also be required to present a variety of other different colors. For example, the ink layer 18 selects materials of other colors such as dark blue or dark purple instead of black materials. Alternatively, according to other needs, it may be necessary to make the ratio of the first chromaticity coordinate and the second chromaticity coordinate of the display area 20 meet a specific range, such as -6 to 0. At this time, in order to reduce the color difference between the display area 20 and the ink area 30 when the display module 10 is turned off, the 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 the shading structure 14.

[0065] In some optional embodiments, the haze of the display area 20 of the display module 10 of the present application is less than 20%. Haze refers to the ability of a material to scatter light, indicating the degree to which light passing through the material is scattered, and is usually expressed as a percentage. The higher the haze, the more turbid the material looks; the lower the haze, the clearer the material looks. Specifically, the haze of the display module 10 of the present application satisfies the following formula: Haze = amount of scattered light / total amount of transmitted light, where the scattered light is light with an angle of >2.5° between the exit direction and the direction perpendicular to the plane where the display panel 11 is located. The haze of the present application meets the above requirements, so that the display module 10 of the present application can reduce the color difference when the screen is turned off while ensuring the clarity of the display module 10 when it is displayed. Specifically, the above 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 shading structure 14. In order to further improve the clarity of the display module 10 during display, optionally, the haze of the display area 20 of the display module 10 can be set to 15%, 10%, 5% or 1%.

[0066] In other optional embodiments, the transmittance loss of the display area 20 of the display module 10 of the present application is less than 10%. Transmittance loss refers to the light energy loss caused by the material when light passes through, that is, the intensity reduction of the light after passing through the material. Transmittance loss is usually expressed as a percentage, indicating the degree of absorption and scattering of light by the material. Specifically, the transmittance loss of the display module 10 of the present application satisfies the following formula: Transmittance loss = (light source brightness-transmitted light brightness) / light source brightness. The transmittance loss of the present application meets the above requirements, which can ensure the transparency of the display module 10 when the display module 10 is displayed while reducing the color difference of the off-screen. Specifically, the above haze can be less than 10% by adjusting the distribution density, distribution thickness, selected material, material color and material shape of the shading structure 14. In order to further improve the transparency of the display module 10 when it is displayed, 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 3, the shading structure 14 is distributed inside the adhesive layer 13. Specifically, the shading structure 14 distributed inside the adhesive layer 13 is in a granular form. The granular shading structure 14 may include one or more of metal oxides, pigments or carbon black, but is not limited thereto. The shape of the shading structure 14 may include one or more of granular, columnar, prismatic or grid-like shapes, but is not limited thereto. The granular shading structure 14 may be evenly distributed in the adhesive layer 13 to ensure consistent display of the display module 10 and avoid color unevenness problems. The shading structure 14 provides a variety of material options to meet the needs of different display modules 10 to reduce the display difference when the screen is off. The diversified shape design of the shading structure 14 can provide flexible design options to meet the needs of different display modules 10 to reduce the display difference when the screen is off.

[0068] In some other optional embodiments, reference Figure 6 and Figure 7 , another display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13 and a cover plate 12 which are stacked in sequence, and a shading structure 14 located on the surface of the display panel 11 close to 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 shading 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 covers the display area 20 and the ink area 30 at the same time to protect the display panel 11. Among them, the shading structure 14 is distributed inside the cover plate 12. The above arrangement not only reduces the color difference of the display module 10 when the screen is turned off, but also helps to increase the structural strength and stability between layers, prevent slippage or separation between layers, and improve the mechanical properties and durability of the display module. Other aspects of these embodiments can refer to the aforementioned embodiments, and the repeated parts will not be repeated.

[0069] refer to Figure 8Another display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13 and a cover plate 12 which are stacked in sequence, and a shading structure 14 located between the adhesive layer 13 and the cover plate 12. Among them, the shading structure 14 located between the adhesive layer 13 and the cover plate 12 is in the form of a film. The material of the film-like shading structure 14 includes one or two of pigments or carbon black, but is not limited thereto. The film-like shading structure 14 can be prepared by a variety of processes such as coating, spraying, and hot pressing, which adapts to the existing manufacturing process and simplifies the production process. The thickness and uniformity of the film can be precisely controlled by advanced manufacturing processes to ensure the consistent display of the display module 10 and avoid color unevenness problems. The shading structure 14 provides a variety of material options to meet the needs of reducing the display difference of the off-screen display of different display modules 10. The film-like shading structure 14 can also provide a certain protection for the components inside the display module 10 to prevent the intrusion of dust, moisture and other pollutants. Other aspects of these embodiments can refer to the aforementioned embodiments, and the repetitions will not be repeated.

[0070] In some other optional embodiments, reference Fig. 9 Another display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13 and a cover plate 12 stacked in sequence, 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 film. Other aspects of these embodiments can refer to the aforementioned embodiments, and the repeated parts will not be repeated.

[0071] In some other optional embodiments, reference Fig.10 , another display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13 and a cover plate 12 which are stacked in sequence, and a shading structure 14 which is distributed inside the cover plate 12 and the adhesive layer 13 at the same time. Among them, the shading structures 14 of this embodiment are all in particle form. The particle-shaped shading structure 14 is simultaneously arranged inside the cover plate 12 and the adhesive layer 13. While further reducing the color difference of the display module 10 when the screen is turned off, it can also avoid the instability of the particle-shaped shading structure 14 independent of other film layers, increase the mechanical strength between layers, prevent interlayer slippage or separation, and improve the overall structural stability of the display module. In addition, the above structure can also effectively control the propagation path of scattered light from the display panel 11 when the display module 10 is displayed, reduce light reflection and scattering inside the display module 10, and enhance the display effect. Other aspects of these embodiments can refer to the aforementioned embodiments, and the repeated parts will not be repeated.

[0072] refer to Fig.11, another display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13 and a cover plate 12 stacked in sequence, and a shading structure 14 between the display panel 11 and the adhesive layer 13 and another shading structure 14 between the adhesive layer 13 and the adhesive cover plate 12. Among them, the shading structures 14 of this embodiment are all in the form of films. The two-layer film-like shading structure 14 can further reduce the color difference of the display module 10 when the screen is turned off, while also avoiding the instability of the particle-like shading structure 14 independent of other film layers, enhancing the bonding force and mechanical strength between the film layers, preventing slippage or separation between the film layers, and improving the stability of the overall structure. In addition, the double-layer film-like shading structure 14 can be realized by the same manufacturing process, simplifying the preparation process of the shading structure 14. The double-layer film-like shading structure 14 can also provide further protection for the components inside the display module 10 to prevent moisture, dust, ultraviolet rays, etc. from affecting the display module 10. Other aspects of these embodiments can refer to the aforementioned embodiments, and the repeated parts will not be repeated.

[0073] In some other optional embodiments, reference Fig.12 Another display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13, a cover plate 12 and a light-shielding structure 14 which are stacked in sequence. Among them, 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 in a granular form, and the material may include one or more of metal oxides, pigments or carbon black, and the shape may include one or more of granular, columnar, prismatic or grid-like. The second light-shielding structure 142 is in a film form, and the material includes one or both of pigments or carbon black. The setting of the above two light-shielding structures 14 can take into account the advantages of both the granular and film-like light-shielding structures 14. Other aspects of these embodiments can refer to the aforementioned embodiments, and the repeated parts will not be repeated.

[0074] In some other optional embodiments, reference Fig.13Another display module 10 provided by an embodiment of the present invention includes: a display panel 11, an adhesive layer 13, a cover plate 12 and a light-shielding structure 14 which are stacked in sequence. Among them, 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 in a particle shape, and the second light-shielding structure 142 is in a film shape. The selection of the material and shape of the first light-shielding structure 141 can refer to the aforementioned embodiment, and the selection of the material of the second light-shielding structure 142 can also refer to the aforementioned embodiment, which will not be repeated here. The setting of the above two light-shielding structures 14 can take into account the advantages of both the particle-shaped and film-shaped light-shielding structures 14. Other aspects of these embodiments can refer to the aforementioned embodiments, and the repeated parts will not be repeated.

[0075] In some other optional embodiments, the present application may further provide a plurality of shading structures 14 , which may be in particle and / or film form, and it is sufficient that the shading structures 14 are located on the surface of the display panel 11 close to the cover plate 12 .

[0076] In some embodiments, when the display area 20 is green when the screen is off, the shading structure 14 is rose red. Through the principle of color superposition, the hue adjustment design can make the display area 20 finally present the same or similar black as the ink area 30, thereby optimizing the off-screen hue of the display module 10 and improving the off-screen integrated black effect. At this time, the shading structure 14 of the metal oxide material can include one or both of nano-scale iron oxide or cobalt oxide, but is not limited to this, and only needs to be rose red. The shading structure 14 of the pigment material can be a rose red pigment, but is not limited to this.

[0077] In some embodiments, when the display area 20 is blue when the screen is off, the shading structure 14 is yellow. Through the principle of color superposition, the hue adjustment design can make the display area 20 finally present the same or similar black as the ink area 30, thereby optimizing the off-screen hue of the display module 10 and improving the off-screen integrated black effect. At this time, the shading structure 14 of the metal oxide material may include one or more of nano-scale sodium peroxide, mercuric oxide or vanadium pentoxide, but is not limited to this, and only needs to be yellow. The shading structure 14 of the pigment material can be a yellow pigment, but is not limited to this.

[0078] In some embodiments, when the display area 20 is rose red when the screen is off, the shading structure 14 is green. Through the principle of color superposition, the hue adjustment design can make the display area 20 finally present the same or similar black as the ink area 30, thereby optimizing the off-screen hue of the display module 10 and improving the off-screen integrated black effect. At this time, the shading structure 14 of the metal oxide material may include one or more of nano-scale copper oxide, chromium trioxide or ferrous oxide, but is not limited to this, and only needs to be green. The shading structure 14 of the pigment material can be a green pigment, but is not limited to this.

[0079] The display module provided by the present invention can optimize the screen-off hue of the display module and enhance the integrated black effect when the screen is turned off by arranging a shading structure on the surface of the display panel close to the cover plate, and adjusting the distribution density, distribution thickness, selected material, material color and material shape of the corresponding shading structure for different display modules.

[0080] refer to Fig.14 In another aspect of the embodiment of the present invention, a display device 40 is provided, comprising the display module 10 provided in the embodiment of the present invention. The display device 40 can be any product or component with a display function, such as a vehicle display screen, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc. The specific implementation and technical effects of the display device 40 can be referred to the embodiment of the display module 10, and the repeated parts will not be repeated.

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

[0082] The above contents are further detailed descriptions of the present invention in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A display module, comprising a display area and an ink area, characterized in that: include: Display panel; A cover plate, the cover plate being located at a light emitting side of the display panel; an adhesive layer, the adhesive layer being located between the display panel and the cover plate; A light shielding structure is located on a surface of the display panel close to the cover plate.

2. The display module according to claim 1, characterized in that: The display module also includes: a first substrate, wherein the first substrate is located between the display panel and the cover plate; A first optical film, wherein the first optical film is located between the first substrate and the cover plate; Wherein, 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 part of the shading structure is in particle form; the shading structure includes one or more of metal oxide, pigment or carbon black; the shape of the shading structure includes one or more of granular, columnar, prismatic or grid-like; and / or At least a portion of the light-shielding structure is in the form of a film; the material of the light-shielding structure includes one or both of pigment 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 shading structure is rose red; The metal oxide includes one or both of nano-sized iron oxide and 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 shading 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 rose red when the screen is turned off, the shading structure is green; The metal oxide includes one or more of nano-scale copper oxide, chromium oxide or ferrous oxide; and / or the pigment is a green pigment.

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

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