Display module and display device

Abstract

The utility model discloses a display module and a display device, the display module comprises a transparent display panel and a dimming layer, and the transparent display panel is provided with a display surface and a back surface which are arranged back to back; the dimming layer is arranged on the back surface, and a plurality of shading particles are arranged in the dimming layer; when the dimming layer is in a shading state, in a plane view of the display module, the number of the shading particles of the dimming layer in unit area is a first number; when the dimming layer is in a light-transmitting state, in a plane view of the display module, the number of the shading particles of the dimming layer in unit area is a second number, and the second number is smaller than the first number. The size of the display module can be reduced, and the light and thin design of the display module is achieved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display module and a display device. Background Technology

[0002] Currently, display modules containing transparent display panels are finding increasingly wider applications, such as in shopping mall cabinets, office building showrooms, and smart windows. In related technologies, the display module includes a transparent display panel and a black screen behind the transparent display panel. The display module can switch between a light-transmitting state and a light-blocking state. In the light-transmitting state, the black screen is lowered, and the content displayed on the transparent display panel can be seen from both the display surface and the back. In the light-blocking state, the black screen is raised, and the content displayed on the transparent display panel can only be seen from the display surface, but the contrast of the displayed image is improved compared to the light-transmitting state.

[0003] However, the thickness of the black screen is usually greater than 10 centimeters. The thickness increases the size of the display module, occupies more space, and is not conducive to the design of a thinner and lighter display module.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this application is to provide a display module and a display device to reduce the size of the display module and achieve a thinner and lighter design.

[0006] To solve the above problems, the technical solution of this application is as follows:

[0007] In a first aspect, this application proposes a display module, comprising:

[0008] A transparent display panel with a display side and a back side facing each other; and

[0009] A dimming layer is disposed on the back side, and the dimming layer contains a plurality of light-blocking particles;

[0010] When the dimming layer is in a light-shielding state, in the plan view of the display module, the number of light-shielding particles per unit area of ​​the dimming layer is a first number.

[0011] When the dimming layer is in a light-transmitting state, in a plan view of the display module, the number of light-blocking particles per unit area of ​​the dimming layer is a second number, which is less than the first number.

[0012] In one embodiment of this application, the dimming layer includes:

[0013] A first transparent conductive layer is disposed on the back side;

[0014] An elastic layer is disposed on the side of the first transparent conductive layer away from the back surface, and the elastic layer contains a plurality of light-shielding particles; and

[0015] A second transparent conductive layer is disposed on the side of the elastic layer away from the first transparent conductive layer;

[0016] When the electric field between the first transparent conductive layer and the second transparent conductive layer is less than a preset value, the dimming layer is in a light-shielding state, and the curvature of the surface of the elastic layer is a first curvature.

[0017] When the electric field between the first transparent conductive layer and the second transparent conductive layer is greater than or equal to a preset value, the dimming layer is in a light-transmitting state, and the curvature of the surface of the elastic layer is a second curvature, which is less than the first curvature.

[0018] In one embodiment of this application, the elastic layer includes:

[0019] A piezoelectric layer is disposed between the first transparent conductive layer and the second transparent conductive layer; and

[0020] An organic layer is disposed between the piezoelectric layer and the second transparent conductive layer, and the organic layer contains a plurality of light-shielding particles.

[0021] In one embodiment of this application, when the curvature of the surface of the elastic layer is a first curvature, the area of ​​the elastic layer in the plan view of the display module is a first area;

[0022] When the curvature of the surface of the elastic layer is the second curvature, in the plan view of the display module, the area of ​​the elastic layer is the second area, which is greater than the first area.

[0023] In one embodiment of this application, when the area of ​​the elastic layer is a first area, the distance between two adjacent light-shielding particles in the plan view of the display module is a first distance.

[0024] When the area of ​​the elastic layer is the second area, in the plan view of the display module, the distance between two adjacent light-shielding particles is the second distance.

[0025] The second spacing is greater than the first spacing.

[0026] In one embodiment of this application, the particle size of the light-shielding particles is in the range of 0.01 micrometers to 1 micrometer.

[0027] In one embodiment of this application, the thickness of the dimming layer is less than or equal to 1 cm.

[0028] In one embodiment of this application, the display module further includes an encapsulation layer disposed on the back side and covering the dimming layer.

[0029] In one embodiment of this application, the display module includes a plurality of dimming layers, which are spaced apart on the back side.

[0030] In one embodiment of this application, the transparent display panel includes:

[0031] A substrate, wherein a plurality of dimming layers are provided on one side of the substrate; and

[0032] Multiple sub-pixels are disposed on the side of the substrate away from the dimming layer;

[0033] Each of the dimming layers corresponds to at least one of the sub-pixel settings.

[0034] In one embodiment of this application, the substrate has a plurality of grooves on the side away from the sub-pixel, and the dimming layer is disposed in the grooves;

[0035] When the dimming layer is in a light-blocking state, the dimming layer forms a first gap with the inner wall of the groove;

[0036] When the dimming layer is in a light-transmitting state, the dimming layer forms a second gap with the inner wall of the groove, and the volume of the second gap is greater than the volume of the first gap.

[0037] Secondly, this application proposes a display device including a display module. The display module includes a transparent display panel and a dimming layer. The transparent display panel has a display surface and a back surface facing each other. The dimming layer is disposed on the back surface and has a plurality of light-shielding particles. When the dimming layer is in a light-shielding state, in a plan view of the display module, the number of light-shielding particles per unit area of ​​the dimming layer is a first number. When the dimming layer is in a light-transmitting state, in a plan view of the display module, the number of light-shielding particles per unit area of ​​the dimming layer is a second number, and the second number is less than the first number.

[0038] In this application, by setting a dimming layer on the back of the transparent display panel, the thick black screen required in related technologies is eliminated, reducing the size of the display module and achieving a thinner and lighter design. When the dimming layer is in the light-blocking state, the number of light-blocking particles per unit area of ​​the dimming layer is relatively large in the plan view of the display module. At this time, the display content of the transparent display panel can only be seen from the display surface, but the display module has good contrast. When the dimming layer is in the light-transmitting state, the number of light-blocking particles per unit area of ​​the dimming layer is relatively small in the plan view of the display module. At this time, the display content of the transparent display panel can be seen from both the display surface and the back, achieving transparent display. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of an embodiment of the display module in this application when the dimming layer is in a light-blocking state;

[0040] Figure 2 This is a schematic diagram of an embodiment of the display module of this application when the dimming layer is in a light-transmitting state;

[0041] Figure 3 yes Figure 1 The image shown is a plan view of the display module of this application when the dimming layer is in a light-blocking state.

[0042] Figure 4 yes Figure 2 The image shown is a plan view of the display module of this application when the dimming layer is in a light-transmitting state.

[0043] Figure 5 This is a schematic diagram illustrating the formation of a transparent display panel in the manufacturing method of the display module of this application;

[0044] Figure 6 This is a schematic diagram of the formation of the first transparent conductive layer in the manufacturing method of the display module of this application;

[0045] Figure 7 This is a schematic diagram of the formation of a piezoelectric layer in the manufacturing method of the display module of this application;

[0046] Figure 8 This is a schematic diagram illustrating the formation of the organic layer in the manufacturing method of the display module of this application;

[0047] Figure 9 This is a schematic diagram of the formation of the second transparent conductive layer in the manufacturing method of the display module of this application;

[0048] Figure 10 This is a schematic diagram of an embodiment of the display module of this application;

[0049] Figure 11 This is a schematic diagram of an embodiment of the display module of this application in a light-shielding state;

[0050] Figure 12 This is a schematic diagram of an embodiment of the display module of this application in a light-transmitting state. Detailed Implementation

[0051] The terms used in this specification and claims have the meanings that are commonly understood by one of ordinary skill in the art to which this application pertains. The terms used in this specification and claims are for the purpose of facilitating the description and understanding of this application only, and are not intended to limit this application to the narrow interpretation of the specific terms used in the specification and claims.

[0052] This application discloses a display device, which can be a tablet computer, e-reader, electronic display screen, laptop computer, mobile phone, augmented reality (AR) / virtual reality (VR) device, media player, wearable device, digital camera, car navigation system, etc. The display device includes a display module 100.

[0053] This application discloses a display module 100, including a transparent display panel 10 and a dimming layer 20. The transparent display panel 10 has a display surface 10a and a back surface 10b disposed opposite to each other. The dimming layer 20 is disposed on the back surface 10b. The dimming layer 20 contains a plurality of light-blocking particles 223.

[0054] Please see Figure 1 When the dimming layer 20 is in a light-shielding state, in the plan view of the display module 100, the number of light-shielding particles 223 per unit area of ​​the dimming layer 20 is the first number.

[0055] Please see Figure 2 When the dimming layer 20 is in a transparent state, in a plan view of the display module 100, the number of light-blocking particles 223 per unit area of ​​the dimming layer 20 is a second number. The second number is less than the first number.

[0056] In this embodiment, by providing a dimming layer 20 on the back surface 10b of the transparent display panel 10, the thick black screen used in related technologies is eliminated, reducing the size of the display module 100 and achieving a thinner and lighter design for the display module 100. Please refer to... Figure 3 When the dimming layer 20 is in a light-blocking state, in the plan view of the display module 100, the number of light-blocking particles 223 per unit area of ​​the dimming layer 20 is relatively large. At this time, the display content of the transparent display panel 10 can only be seen from the display surface 10a, but the display module 100 still has good contrast. (See also...) Figure 4 When the dimming layer 20 is in a light-transmitting state, in the plan view of the display module 100, the number of light-blocking particles 223 per unit area of ​​the dimming layer 20 is relatively small. At this time, the display content of the transparent display panel 10 can be seen from both the display surface 10a and the back surface 10b, thus achieving transparent display.

[0057] Optionally, the thickness of the dimming layer 20 is less than or equal to 1 cm.

[0058] In related technologies, the thickness of the black screen is typically greater than 10 centimeters. However, in this embodiment, on the one hand, the thickness of the dimming layer 20 is much smaller than the thickness of the black screen; on the other hand, the dimming layer 20 is disposed in close contact with the back surface 10b of the transparent display panel 10. Therefore, the volume of the display module 100 in this embodiment is reduced compared to related technologies, thereby achieving a thinner and lighter design for the display module 100.

[0059] It is important to understand that the thickness direction of the dimming layer 20 is the same as that of the transparent display panel 10. The thickness direction of the transparent display panel 10 is perpendicular to its surface.

[0060] Optionally, the thickness of the dimming layer 20 can be one of the following values: 0.05 cm, 0.10 cm, 0.15 cm, 0.20 cm, 0.25 cm, 0.30 cm, 0.35 cm, 0.40 cm, 0.45 cm, 0.50 cm, 0.55 cm, 0.60 cm, 0.65 cm, 0.70 cm, 0.75 cm, 0.80 cm, 0.85 cm, 0.90 cm, 0.95 cm, or 1 cm.

[0061] Optionally, the material of the light-shielding particles 223 can be an inorganic material, including metal oxides, carbonates, carbonaceous materials, and other materials. When the material of the light-shielding particles 223 is a metal oxide, the light-shielding particles 223 can be one of zinc oxide and titanium dioxide. When the material of the light-shielding particles 223 is a carbonate, the light-shielding particles 223 can be calcium carbonate. When the light-shielding particles 223 are carbonaceous materials, the light-shielding particles 223 can be one of carbon nanotubes, carbon black, and graphite.

[0062] Optionally, the material of the light-shielding particles 223 can be an organic material, including organic pigments, polymer microspheres, carbon-based materials, etc. The organic pigment can be one of azo pigments or phthalocyanine pigments. The polymer microspheres can be styrene-acrylate polymer microspheres. The carbon-based material can be graphene.

[0063] Optionally, the ratio of the first quantity to the second quantity is in the range of 1.5 to 2, and the value of the ratio is one of the following: 1.50, 1.55, 1.60, 1.65, 1.70, 1.75, 1.80, 1.85, 1.90, 1.95, and 2.00.

[0064] Optionally, the second quantity is in the range of 5,000 to 10,000. The first quantity is in the range of 7,500 to 20,000.

[0065] Optionally, the second quantity can be any of the following values: 5000, 5100, 5200, 5300, 5400, 5500, 5600, 5700, 5800, 5900, 6000, 6100, 6200, 6300, 6400, 6500, 6600, 6700, 6800, 6900, 7000, 7100, 7200, 7300, 7400. A value from 7500, 7600, 7700, 7800, 7900, 8000, 8100, 8200, 8300, 8400, 8500, 8600, 8700, 8800, 8900, 9000, 9100, 9200, 9300, 9400, 9500, 9600, 9700, 9800, 9900, and 10000.

[0066] Optionally, the first quantity can be any of the following values: 7500, 7600, 7700, 7800, 7900, 8000, 8100, 8200, 8300, 8400, 8500, 8600, 8700, 8800, 8900, 9000, 9100, 9200, 9300, 9400, 9500, 9600, 9700, 9800, 9900, 10000, 10100, 10200, 10300, 10400, 10500, 10600, 10700, 10 800, 10900, 11000, 11100, 11200, 11300, 11400, 11500, 11600, 11700, 11800, 11900, 12000, 12100, 12200, 12300, 12400, 12500, 12600, 12700, 12800, 12900, 13000, 13100, 13200, 13300, 13400, 13500, 13600, 13700, 13800, 139 00, 14000, 14100, 14200, 14300, 14400, 14500, 14600, 14700, 14800, 14900, 15000, 15100, 15200, 15300, 15400, 15500, 15600, 15700, 15800, 15900, 16000, 16100, 16200, 16300, 16400, 16500, 16600, 16700, 16800, 16900, 1700 A value from 0, 17100, 17200, 17300, 17400, 17500, 17600, 17700, 17800, 17900, 18000, 18100, 18200, 18300, 18400, 18500, 18600, 18700, 18800, 18900, 19000, 19100, 19200, 19300, 19400, 19500, 19600, 19700, 19800, 19900, and 20000.

[0067] Optionally, the dimming layer 20 includes a first transparent conductive layer 21, an elastic layer 22, and a second transparent conductive layer 23. The first transparent conductive layer 21 is disposed on the back surface 10b. The elastic layer 22 is disposed on the side of the first transparent conductive layer 21 away from the back surface 10b. The elastic layer 22 contains a plurality of light-shielding particles 223. The second transparent conductive layer 23 is disposed on the side of the elastic layer 22 away from the first transparent conductive layer 21.

[0068] When the electric field between the first transparent conductive layer 21 and the second transparent conductive layer 23 is less than a preset value, the dimming layer 20 is in a light-blocking state, and the curvature of the surface of the elastic layer 22 is the first curvature K1.

[0069] When the electric field between the first transparent conductive layer 21 and the second transparent conductive layer 23 is greater than or equal to a preset value, the dimming layer 20 is in a light-transmitting state, and the curvature of the surface of the elastic layer 22 is a second curvature K2. The second curvature K2 is less than the first curvature K1.

[0070] The first transparent conductive layer 21 and the second transparent conductive layer 23 can be made of indium tin oxide (ITO), and the elastic layer 22 can be made of a piezoelectric material.

[0071] In this embodiment, when no voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23, no electric field is formed between them. Alternatively, when the voltage applied to the first transparent conductive layer 21 and the second transparent conductive layer 23 is small, the alternating electric field is less than a preset value. At this time, the edge of the elastic layer 22 is raised relative to its center, and the surface of the elastic layer 22 is warped. In this case, the surface of the elastic layer 22 has a large curvature, which is a first curvature K1. In this state, since multiple light-blocking particles 223 are distributed inside the elastic layer 22, when the surface of the elastic layer 22 is warped, the number of light-blocking particles 223 per unit area of ​​the elastic layer 22 is relatively large in the plan view of the display module 100. Therefore, in this state, light has difficulty penetrating the elastic layer 22, thereby achieving a light-blocking effect. This state is the light-blocking state of the dimming layer 20.

[0072] When a suitable voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23, an alternating electric field is formed between them, which is greater than or equal to a preset value. At this time, since the elastic layer 22 is made of piezoelectric material, the alternating electric field acts on the piezoelectric material, and under the influence of the inverse piezoelectric effect, the raised edges of the elastic layer 22 become flat. In this state, the raised edges of the elastic layer 22 fall down, and compared to the light-shielding state, the area of ​​the elastic layer 22 in the planar view of the display module 100 is larger. Since the light-shielding particles 223 are uniformly distributed in the elastic layer 22, and the number of light-shielding particles 223 remains constant, when the area of ​​the elastic layer 22 in the planar view of the display module 100 increases, the number of light-shielding particles 223 per unit area of ​​the elastic layer 22 is smaller. Therefore, in this state, light can penetrate the elastic layer 22, thereby achieving a light-transmitting effect. This state is the light-transmitting state of the dimming layer 20. When the electric field is less than the preset value or becomes 0, the elastic layer 22 will return from the flat state to the warped state, causing the dimming layer 20 to become the light-blocking state.

[0073] Optionally, the second curvature K2 is greater than or equal to 0. In the transparent state, when the edge of the elastic layer 22 is flat, the value of the second curvature K2 can be 0.

[0074] Optionally, the thickness of the first transparent conductive layer 21 and the second transparent conductive layer 23 is in the range of 0.1 micrometers to 1 micrometer.

[0075] Optionally, when the curvature of the surface of the elastic layer 22 is a first curvature K1, the area of ​​the elastic layer 22 in the plan view of the display module 100 is a first area S1.

[0076] When the curvature of the surface of the elastic layer 22 is the second curvature K2, the area of ​​the elastic layer 22 in the plan view of the display module 100 is the second area S2. The second area S2 is greater than the first area S1.

[0077] In this embodiment, when no voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23, no electric field is formed between them. Alternatively, when the voltage applied to the first transparent conductive layer 21 and the second transparent conductive layer 23 is small, the alternating electric field is less than a preset value. At this time, the edge of the elastic layer 22 is raised relative to its center, and the surface of the elastic layer 22 is warped. In this case, the surface of the elastic layer 22 has a large curvature, which is a first curvature K1. In this state, since multiple light-shielding particles 223 are distributed inside the elastic layer 22, when the surface of the elastic layer 22 is warped, the area of ​​the elastic layer 22 is small in the plan view of the display module 100, the area of ​​the elastic layer 22 is the first area S1, and the number of light-shielding particles 223 per unit area of ​​the elastic layer 22 is large. Therefore, in this state, light has difficulty penetrating the elastic layer 22, thereby achieving a light-shielding effect. This state is the light-shielding state of the dimming layer 20.

[0078] When a suitable voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23, an alternating electric field is formed between the first transparent conductive layer 21 and the second transparent conductive layer 23. This alternating electric field is greater than or equal to a preset value. At this time, since the material of the elastic layer 22 is a piezoelectric material, the alternating electric field acts on the piezoelectric material, and under the influence of the inverse piezoelectric effect, the raised edge of the elastic layer 22 becomes flat. In this state, the raised edge of the elastic layer 22 falls down, and compared with the light-shielding state, the curvature of the surface of the elastic layer 22 becomes smaller to the second curvature K2. In the plan view of the display module 100, the area of ​​the elastic layer 22 becomes larger than that of the light-shielding state, and the area of ​​the elastic layer 22 becomes the second area S2. Since the light-shielding particles 223 are uniformly distributed in the elastic layer 22, and the number of light-shielding particles 223 remains unchanged, when the area of ​​the elastic layer 22 in the plan view of the display module 100 becomes larger, the number of light-shielding particles 223 per unit area of ​​the elastic layer 22 is smaller. Therefore, in this state, light can penetrate the elastic layer 22, thus achieving a light-transmitting effect. This state is the light-transmitting state of the dimming layer 20. When the electric field is less than a preset value or becomes 0, the elastic layer 22 will return from a flat state to a warped state, causing the dimming layer 20 to become a light-blocking state.

[0079] In this embodiment, in the light-transmitting state, the pattern of the elastic layer 22 in the plan view of the display module 100 can be rectangular, circular, elliptical, or irregular. When the pattern of the elastic layer 22 is rectangular or circular, the side length or diameter of the rectangle or circle is in the range of 75 micrometers to 400 micrometers, specifically 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 100 micrometers, 105 micrometers, 110 micrometers, 115 micrometers, 120 micrometers, 125 micrometers, 130 micrometers, 135 micrometers, 140 micrometers, 145 micrometers, 150 micrometers, 155 micrometers, 160 micrometers, 165 micrometers, 170 micrometers, 175 micrometers, 180 micrometers, 185 micrometers, 190 micrometers, 195 micrometers, 200 micrometers, 205 micrometers, 210 micrometers, 215 micrometers, and 220 micrometers. The value is one of the following: 225 micrometers, 230 micrometers, 235 micrometers, 240 micrometers, 245 micrometers, 250 micrometers, 255 micrometers, 260 micrometers, 265 micrometers, 270 micrometers, 275 micrometers, 280 micrometers, 285 micrometers, 290 micrometers, 295 micrometers, 300 micrometers, 305 micrometers, 310 micrometers, 315 micrometers, 320 micrometers, 325 micrometers, 330 micrometers, 335 micrometers, 340 micrometers, 345 micrometers, 350 micrometers, 355 micrometers, 360 micrometers, 365 micrometers, 370 micrometers, 375 micrometers, 380 micrometers, 385 micrometers, 390 micrometers, 395 micrometers, or 400 micrometers.

[0080] In the light-shielding state, in the plan view of the display module 100, when the pattern of the elastic layer 22 is rectangular or circular, the side length or diameter of the rectangle or circle is in the range of 50 micrometers to 200 micrometers, and its value is one of the following values: 50 micrometers, 55 micrometers, 60 micrometers, 65 micrometers, 70 micrometers, 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 100 micrometers, 105 micrometers, 110 micrometers, 115 micrometers, 120 micrometers, 125 micrometers, 130 micrometers, 135 micrometers, 140 micrometers, 145 micrometers, 150 micrometers, 155 micrometers, 160 micrometers, 165 micrometers, 170 micrometers, 175 micrometers, 180 micrometers, 185 micrometers, 190 micrometers, 195 micrometers, and 200 micrometers.

[0081] Optionally, when the area of ​​the elastic layer 22 is the first area S1, the distance between two adjacent light-shielding particles 223 in the plan view of the display module 100 is the first distance D1.

[0082] When the area of ​​the elastic layer 22 is the second area S2, in the plan view of the display module 100, the distance between two adjacent light-blocking particles 223 is the second distance D2. The second distance D2 is greater than the first distance D1.

[0083] In this embodiment, when no voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23, no electric field is formed between them. Alternatively, when the voltage applied to the first transparent conductive layer 21 and the second transparent conductive layer 23 is small, the alternating electric field is less than a preset value. In this case, in the plan view of the display module 100, the area of ​​the elastic layer 22 is small, the area of ​​the elastic layer 22 is the first area S1, and the spacing between two adjacent light-shielding particles 223 is small, the spacing between two adjacent light-shielding particles 223 is the first spacing D1. That is, in this state, the light-shielding particles 223 are relatively dense, making it difficult for light to penetrate the elastic layer 22, thereby achieving light shielding.

[0084] When a suitable voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23, an alternating electric field is formed between them, which is greater than or equal to a preset value. At this time, in the plan view of the display module 100, the area of ​​the elastic layer 22 is relatively large, and the area of ​​the elastic layer 22 is the second area S2. The spacing between two adjacent light-blocking particles 223 is also relatively large, and the spacing between two adjacent light-blocking particles 223 is the second spacing D2. That is, in this state, the light-blocking particles 223 are relatively dispersed, and light can easily penetrate the elastic layer 22, thereby achieving light transmission.

[0085] In the light-shielding state, the first distance D1 between two adjacent light-shielding particles 223 is in the range of 0.2 micrometers to 0.5 micrometers, and the value of the first distance D1 is one of the following values: 0.20 micrometers, 0.21 micrometers, 0.22 micrometers, 0.23 micrometers, 0.24 micrometers, 0.25 micrometers, 0.26 micrometers, 0.27 micrometers, 0.28 micrometers, 0.29 micrometers, 0.30 micrometers, 0.31 micrometers, 0.32 micrometers, 0.33 micrometers, 0.34 micrometers, 0.35 micrometers, 0.36 micrometers, 0.37 micrometers, 0.38 micrometers, 0.39 micrometers, 0.40 micrometers, 0.41 micrometers, 0.42 micrometers, 0.43 micrometers, 0.44 micrometers, 0.45 micrometers, 0.46 micrometers, 0.47 micrometers, 0.48 micrometers, 0.49 micrometers, and 0.50 micrometers.

[0086] In the transparent state, the second distance D2 between two adjacent light-blocking particles 223 is in the range of 0.4 micrometers to 1 micrometer, and the value of this second distance D2 is 0.40 micrometers, 0.41 micrometers, 0.42 micrometers, 0.43 micrometers, 0.44 micrometers, 0.45 micrometers, 0.46 micrometers, 0.47 micrometers, 0.48 micrometers, 0.49 micrometers, 0.50 micrometers, 0.51 micrometers, 0.52 micrometers, 0.53 micrometers, 0.54 micrometers, 0.55 micrometers, 0.56 micrometers, 0.57 micrometers, 0.58 micrometers, 0.59 micrometers, 0.60 micrometers, 0.61 micrometers, 0.62 micrometers, 0.63 micrometers, 0.64 micrometers, 0.65 micrometers, 0.66 micrometers. A value from 0.67 micrometers, 0.68 micrometers, 0.69 micrometers, 0.70 micrometers, 0.71 micrometers, 0.72 micrometers, 0.73 micrometers, 0.74 micrometers, 0.75 micrometers, 0.76 micrometers, 0.77 micrometers, 0.78 micrometers, 0.79 micrometers, 0.80 micrometers, 0.81 micrometers, 0.82 micrometers, 0.83 micrometers, 0.84 micrometers, 0.85 micrometers, 0.86 micrometers, 0.87 micrometers, 0.88 micrometers, 0.89 micrometers, 0.90 micrometers, 0.91 micrometers, 0.92 micrometers, 0.93 micrometers, 0.94 micrometers, 0.95 micrometers, 0.96 micrometers, 0.97 micrometers, 0.98 micrometers, 0.99 micrometers, to 1 micrometer.

[0087] Optionally, the particle size of the light-shielding particles 223 is in the range of 0.01 micrometers to 1 micrometer.

[0088] In this embodiment, the particle size of the light-shielding particles 223 ranges from 0.01 μm, 0.02 μm, 0.03 μm, 0.04 μm, 0.05 μm, 0.06 μm, 0.07 μm, 0.08 μm, 0.09 μm, 0.10 μm, 0.11 μm, 0.12 μm, 0.13 μm, 0.14 μm, 0.15 μm, 0.16 μm, 0.17 μm, 0.18 μm, 0.19 μm, 0.20 μm, 0.21 μm, 0.22 μm, and 0.2 μm. 3 micrometers, 0.24 micrometers, 0.25 micrometers, 0.26 micrometers, 0.27 micrometers, 0.28 micrometers, 0.29 micrometers, 0.30 micrometers, 0.31 micrometers, 0.32 micrometers, 0.33 micrometers, 0.34 micrometers, 0.35 micrometers, 0.36 micrometers, 0.37 micrometers, 0.38 micrometers, 0.39 micrometers, 0.40 micrometers, 0.41 micrometers, 0.42 micrometers, 0.43 micrometers, 0.44 micrometers, 0.45 micrometers, 0.46 micrometers, 0.47 micrometers, 0.48 micrometers, 0.4 9 micrometers, 0.50 micrometers, 0.51 micrometers, 0.52 micrometers, 0.53 micrometers, 0.54 micrometers, 0.55 micrometers, 0.56 micrometers, 0.57 micrometers, 0.58 micrometers, 0.59 micrometers, 0.60 micrometers, 0.61 micrometers, 0.62 micrometers, 0.63 micrometers, 0.64 micrometers, 0.65 micrometers, 0.66 micrometers, 0.67 micrometers, 0.68 micrometers, 0.69 micrometers, 0.70 micrometers, 0.71 micrometers, 0.72 micrometers, 0.73 micrometers, 0.74 micrometers, 0.7 A value from 5 micrometers, 0.76 micrometers, 0.77 micrometers, 0.78 micrometers, 0.79 micrometers, 0.80 micrometers, 0.81 micrometers, 0.82 micrometers, 0.83 micrometers, 0.84 micrometers, 0.85 micrometers, 0.86 micrometers, 0.87 micrometers, 0.88 micrometers, 0.89 micrometers, 0.90 micrometers, 0.91 micrometers, 0.92 micrometers, 0.93 micrometers, 0.94 micrometers, 0.95 micrometers, 0.96 micrometers, 0.97 micrometers, 0.98 micrometers, 0.99 micrometers, and 1 micrometer.

[0089] In this embodiment, when the particle size of the light-blocking particles 223 is larger, the contrast of the display module 100 is relatively higher in the light-blocking state. When the particle size of the light-blocking particles 223 is smaller, the transmittance of the display module 100 is relatively higher in the light-transmitting state.

[0090] Optionally, the elastic layer 22 includes a piezoelectric layer 221 and an organic layer 222. The piezoelectric layer 221 is disposed between the first transparent conductive layer 21 and the second transparent conductive layer 23. The organic layer 222 is disposed between the piezoelectric layer 221 and the second transparent conductive layer 23. A plurality of light-shielding particles 223 are disposed within the organic layer 222.

[0091] The piezoelectric layer 221 can be made of a piezoelectric material. The piezoelectric material can be one of zirconium titanate (PZT) or potassium sodium niobate (KNN). The organic layer 222 can be made of an organic material, which can be one of polydimethylsiloxane (PDMS) or polyurethane (PU).

[0092] In this embodiment, the elastic layer 22 includes a piezoelectric layer 221 and an organic layer 222 stacked together. The organic layer 222 is a flexible film layer formed on one side of the piezoelectric layer 221, and the shape of the organic layer 222 can change with the piezoelectric layer 221. When the curvature of the surface of the piezoelectric layer 221 is a first curvature K1, the curvature of the surface of the organic layer 222 is also the first curvature K1. When the curvature of the surface of the piezoelectric layer 221 is a second curvature K2, the curvature of the surface of the organic layer 222 is also the second curvature K2.

[0093] When the piezoelectric layer 221 is placed between the first transparent conductive layer 21 and the second transparent conductive layer 23, if there is no electric field between the first transparent conductive layer 21 and the second transparent conductive layer 23, the curvature of the surface of the piezoelectric layer 221 is a first curvature K1. If the electric field between the first transparent conductive layer 21 and the second transparent conductive layer 23 is greater than a preset value, the curvature of the surface of the piezoelectric layer 221 is a second curvature K2. If the edge of the piezoelectric layer 221 is flat, the second curvature K2 is 0. When the electric field is greater than the preset value, the piezoelectric layer 221, which originally had a surface curvature of the first curvature K1, will undergo an inverse piezoelectric transformation effect, thereby forming a piezoelectric layer 221 with a surface curvature of the second curvature K2. Since the organic layer 222 can change shape with the piezoelectric layer 221, after applying an electric field to the piezoelectric layer 221, the number of light-blocking particles 223 per unit area disposed in the organic layer 222 changes in the plan view of the display module 100, thereby realizing the transformation from light blocking to light transmission.

[0094] For the method of creating display module 100, please refer to Figure 5 A transparent display panel 10 is provided, including a substrate 11 and a plurality of sub-pixels 12 disposed on one side of the substrate 11. It should be understood that a driving function layer can be disposed between the substrate 11 and the plurality of sub-pixels 12, and the driving function layer is electrically connected to the plurality of sub-pixels 12. See also... Figure 6 A first transparent conductive layer 21 is first formed on the back surface 10b of the transparent display panel 10. Please refer to [link / reference]. Figure 7 Then, a piezoelectric layer 221 is formed on the first transparent conductive layer 21. Before forming the organic layer 222, light-shielding particles 223 are incorporated into the liquid organic material and mixed uniformly. The liquid organic material, i.e., the material of the organic layer 222, can be one of polydimethylsiloxane (PDMS) or polyurethane (PU). After uniform mixing, please refer to... Figure 8Liquid organic material is sprayed onto the surface of the piezoelectric layer 221, and then irradiated with light or ultraviolet light to cause cross-linking, forming a solid or semi-solid organic layer 222. (See also...) Figure 9 Then, a second transparent conductive layer 23 is formed on the organic layer 222.

[0095] In the above steps, the order in which the piezoelectric layer 221 and the organic layer 222 are formed can be changed according to the product structure.

[0096] Please see Figure 10 Optionally, the display module 100 also includes an encapsulation layer 30. The encapsulation layer 30 is disposed on the back side 10b and covers the dimming layer 20.

[0097] In this embodiment, the protective layer can be made of glass or an encapsulation film. No limitation is made to the material of the protective layer. The protective layer can reduce the erosion of the dimming layer 20 by external water and oxygen, improving the stability of the dimming layer 20 structure. The thickness of the encapsulation layer 30 is in the range of 0.1 mm to 10 mm.

[0098] Optionally, the display module 100 includes a plurality of dimming layers 20. The plurality of dimming layers 20 are spaced apart on the back surface 10b.

[0099] In this embodiment, the structural design of multiple dimming layers 20 ensures localized dimming. Compared to the overall light-blocking effect of a black curtain in related technologies, this embodiment allows for partial light transmission and partial light blocking, resulting in a better display effect. In the dimming layer 20 where light blocking is required, no voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23; in this case, the dimming layer 20 in that area is in a light-blocking state. In the dimming layer 20 where light transmission is required, an appropriate voltage is applied to the first transparent conductive layer 21 and the second transparent conductive layer 23; in this case, the dimming layer 20 in that area is in a light-transmitting state.

[0100] Optionally, the transparent display panel 10 includes a substrate 11 and a plurality of sub-pixels 12. A plurality of dimming layers 20 are provided on one side of the substrate 11. The plurality of sub-pixels 12 are provided on the side of the substrate 11 away from the dimming layers 20. Each dimming layer 20 corresponds to at least one sub-pixel 12.

[0101] In this embodiment, the multiple sub-pixels 12 can be organic light-emitting diodes (OLEDs), mini-LEDs, or micro-LEDs; the type of sub-pixels 12 is not limited here. The substrate 11 can be a rigid substrate 11, and the material of the rigid substrate 11 can be glass. The substrate 11 can also be a flexible substrate 11, and the material of the flexible substrate 11 can be polyimide. One dimming layer 20 can correspond to one sub-pixel 12, one dimming layer 20 can also correspond to one pixel composed of multiple sub-pixels 12, and one dimming layer 20 can also correspond to multiple pixels; this is not limited here. In this embodiment, the fewer the number of sub-pixels 12 corresponding to the dimming layer 20, the more precise the local dimming effect can be achieved.

[0102] Optionally, the substrate 11 has a plurality of grooves 13 on the side away from the sub-pixel 12. A dimming layer 20 is disposed in the grooves 13.

[0103] Please see Figure 11 When the dimming layer 20 is in the light-blocking state, the dimming layer 20 forms a first gap with the inner wall of the groove 13.

[0104] Please see Figure 12 When the dimming layer 20 is in a light-transmitting state, the dimming layer 20 forms a second gap with the inner wall of the groove 13. The volume of the second gap is greater than the volume of the first gap.

[0105] In this embodiment, to further reduce the thickness of the display module 100, a groove 13 can be provided on the back surface 10b of the substrate 11, and at least a portion of the dimming layer 20 can be disposed within the groove 13. The curvature of the inner wall of the groove 13 is a third curvature K3.

[0106] When the dimming layer 20 is in a light-shielding state, the curvature of the surface of the dimming layer 20 is a first curvature K1. If the third curvature K3 is equal to the first curvature K1, the surface of the dimming layer 20 is in close contact with the inner wall of the groove 13, and the volume of the first gap is 0. If the third curvature K3 is greater than or less than the first curvature K1, the volume of the first gap formed between the surface of the dimming layer 20 and the inner wall of the groove 13 is greater than 0.

[0107] When the dimming layer 20 is in a transparent state, the curvature of the surface of the dimming layer 20 is the second curvature K2. The second curvature K2 is less than the first curvature K1. When the second curvature K2 is 0, the dimming layer 20 is a flat film layer. At this time, the dimming layer 20 and the inner wall of the groove 13 will form a second gap with a larger volume. The second gap is larger than the first gap.

[0108] In the fabrication method of the display module 100 of this application, multiple grooves 13 can be prepared on the back side 10b of the substrate 11 using an etchant, such as hydrofluoric acid. Alternatively, multiple grooves 13 can be prepared on the back side 10b of the substrate 11 by laser engraving, to facilitate control over the size, depth, and inner wall curvature of each groove 13. The depth or width of the groove 13 is adapted to the thickness or size of the dimming layer 20, and its value can be in the range of less than 100 micrometers.

[0109] The specific embodiments of this application have been described in detail above. The embodiments disclosed above are merely preferred embodiments of this application. Those skilled in the art can make many modifications and improvements without departing from the concept of this application. All such modifications and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A display module, characterized in that, include: A transparent display panel with a display side and a back side facing each other; and A dimming layer is disposed on the back side, and the dimming layer contains a plurality of light-blocking particles; When the dimming layer is in a light-shielding state, in the plan view of the display module, the number of light-shielding particles per unit area of ​​the dimming layer is a first number. When the dimming layer is in a light-transmitting state, in a plan view of the display module, the number of light-blocking particles per unit area of ​​the dimming layer is a second number, which is less than the first number.

2. The display module of claim 1, wherein, The dimming layer includes: A first transparent conductive layer is disposed on the back side; An elastic layer is disposed on the side of the first transparent conductive layer away from the back surface, and the elastic layer contains a plurality of light-shielding particles; and A second transparent conductive layer is disposed on the side of the elastic layer away from the first transparent conductive layer; When the electric field between the first transparent conductive layer and the second transparent conductive layer is less than a preset value, the dimming layer is in a light-shielding state, and the curvature of the surface of the elastic layer is a first curvature. When the electric field between the first transparent conductive layer and the second transparent conductive layer is greater than or equal to a preset value, the dimming layer is in a light-transmitting state, and the curvature of the surface of the elastic layer is a second curvature, which is less than the first curvature.

3. The display module of claim 2, wherein the display module is configured to be mounted to a display module mounting surface of a display module mounting structure. The elastic layer includes: A piezoelectric layer is disposed between the first transparent conductive layer and the second transparent conductive layer; and An organic layer is disposed between the piezoelectric layer and the second transparent conductive layer, and the organic layer contains a plurality of light-shielding particles.

4. The display module of claim 2, wherein the display module is configured to be mounted on a display stand. When the curvature of the surface of the elastic layer is a first curvature, the area of ​​the elastic layer in the plan view of the display module is a first area; When the curvature of the surface of the elastic layer is the second curvature, in the plan view of the display module, the area of ​​the elastic layer is the second area, which is greater than the first area.

5. The display module of claim 4, wherein the display module is configured to be mounted on a display stand. When the area of ​​the elastic layer is a first area, in the plan view of the display module, the distance between two adjacent light-shielding particles is a first distance. When the area of ​​the elastic layer is the second area, in the plan view of the display module, the distance between two adjacent light-shielding particles is the second distance. The second spacing is greater than the first spacing.

6. The display module of claim 1, wherein, The particle size of the light-shielding particles is in the range of 0.01 micrometers to 1 micrometer.

7. The display module of any one of claims 1-6, wherein, The thickness of the dimming layer is less than or equal to 1 cm.

8. The display module as described in any one of claims 1-6, characterized in that, The display module further includes an encapsulation layer, which is disposed on the back side and covers the dimming layer.

9. The display module of any one of claims 1-6, wherein, The display module includes multiple dimming layers, which are spaced apart on the back side.

10. The display module of claim 9, wherein the display module is configured to be mounted to a display module mounting surface of a display module mounting structure. The transparent display panel includes: A substrate, wherein a plurality of dimming layers are provided on one side of the substrate; and Multiple sub-pixels are disposed on the side of the substrate away from the dimming layer; Each of the dimming layers corresponds to at least one of the sub-pixel settings.

11. The display module of claim 10, wherein the display module is configured to be mounted to a display module mounting surface of a display module mounting structure. The substrate has multiple grooves on the side away from the sub-pixel, and the dimming layer is disposed in the grooves; When the dimming layer is in a light-blocking state, the dimming layer forms a first gap with the inner wall of the groove; When the light-adjusting layer is in the light-transmitting state, the light-adjusting layer and the inner wall of the groove form a second gap, and a volume of the second gap is greater than a volume of the first gap.

12. A display device comprising: The display module comprises the display module as claimed in any one of claims 1-11.

Images