Diffusion plate, display module and display device

Abstract

According to the diffusion plate, the display module and the display device, the diffusion plate comprises the first electrode layer, the second electrode layer and the polymer liquid crystal layer arranged between the first electrode layer and the second electrode layer, and the polymer liquid crystal layer can be regulated and controlled by applying or not applying an electric field between the first electrode and the second electrode; further, the diffusion plate can be controlled to realize switching between a haze state and a transparent state, and the size of the haze of the diffusion plate can be controlled by adjusting the intensity of the applied electric field; the packaging layer with the large haze is arranged on the side, away from the polymer liquid crystal layer, of the first electrode layer and / or the second electrode layer, light emitted from the diffusion plate can be further atomized, the haze adjusting capacity is improved, and flexible and variable adjustment of the haze is achieved. When the diffusion plate is applied to the display module, switching between the haze state and the high-definition transparent state of the display module can be achieved, flexible switching between education products and entertainment products can be achieved, and the haze of the display module can be flexibly adjusted.

Description

Technical Field

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

[0002] For display devices, user needs for certain attributes vary depending on the usage scenario. For example, entertainment display panels require high brightness to meet high-definition requirements, while educational display panels require higher haze and lower brightness to achieve a paper-like effect and eye protection. Currently, entertainment and educational display panels on the market cannot be freely switched, limiting the product's application range. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a diffuser plate, a display module, and a display device to solve or partially solve the problems raised in the prior art.

[0004] To achieve the above objectives, the first aspect of this application provides a diffusion plate for a display module, including a first electrode layer for receiving a driving signal, a second electrode layer, and a polymer liquid crystal layer disposed between the first electrode layer and the second electrode layer, and further including at least one encapsulation layer, wherein the at least one encapsulation layer is disposed on the side of the first electrode layer and / or the second electrode layer away from the polymer liquid crystal layer, and the haze of the encapsulation layer is 90% to 99%.

[0005] Optionally, two encapsulation layers are provided, with one encapsulation layer on the side of the first electrode layer and the second electrode layer away from the polymer liquid crystal layer.

[0006] A second aspect of this application provides a display module, including a light-emitting part, a light guide plate, a display panel, and a diffuser plate as described in any one of the first aspects above, wherein the diffuser plate is located between the light guide plate and the display panel.

[0007] Optionally, it further includes at least one diffusion layer, which is disposed on at least one side of the diffusion plate along the direction from the light guide plate to the display panel.

[0008] Optionally, the haze of the diffusion layer is greater than that of the diffusion plate.

[0009] Optionally, the diffusion layer is provided, and the diffusion layer includes a first diffusion sub-layer and a second diffusion sub-layer stacked together. The first diffusion sub-layer is disposed close to the diffusion plate, and the second diffusion sub-layer is disposed away from the diffusion plate. The haze of the first diffusion sub-layer and the second diffusion sub-layer may be the same or different.

[0010] Optionally, the haze of the second diffuser layer is greater than that of the first diffuser layer.

[0011] Optionally, two diffusion layers are provided, with one diffusion layer provided on each side of the diffusion plate along the direction from the light guide plate to the display panel.

[0012] Optionally, the two diffusion layers have different haze levels, with the diffusion layer located on the side of the diffusion plate closer to the display panel having a greater haze level than the diffusion layer located on the side of the diffusion plate farther from the display panel.

[0013] A third aspect of this application provides a display device including the display module described in any of the second aspects above.

[0014] As can be seen from the above description, the diffuser plate, display module, and display device provided in this application include a diffuser plate comprising a first electrode layer, a second electrode layer, and a polymer liquid crystal layer disposed between the two. By applying an electric field between the first and second electrode layers and not applying an electric field, the polymer liquid crystal layer can be modulated, thereby controlling the diffuser plate to switch between a hazy state and a transparent state. The degree of haze of the diffuser plate can be controlled by adjusting the intensity of the applied electric field. Furthermore, by providing an encapsulation layer with a higher degree of haze on the side of the first and / or second electrode layers away from the polymer liquid crystal layer, the light emitted from the diffuser plate can be further atomized to increase the ability to adjust the haze and achieve flexible and variable adjustment of the haze. When this diffuser plate is applied to a display module, the display module can switch between a hazy state and a high-definition transparent state, thereby enabling flexible switching between educational and entertainment products, and the haze of the display module can be flexibly adjusted. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram illustrating the three-layer diffusion structure principle of existing educational eye-protection display products;

[0017] Figure 2 This is a schematic diagram of a first structure of the diffusion plate according to an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of a second structure of the diffuser plate according to an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of a third structure of the diffuser plate according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram illustrating the principle of the diffuser plate when it is powered off according to an embodiment of this application.

[0021] Figure 6 This is a schematic diagram illustrating the principle of the diffuser plate being powered on according to an embodiment of this application.

[0022] Figure 7 This is a schematic diagram of a first structural embodiment of the display module of this application;

[0023] Figure 8 This is a schematic diagram of a second structure of the display module according to an embodiment of this application;

[0024] Figure 9 This is a schematic diagram of a third structure of the display module according to an embodiment of this application;

[0025] Figure 10 This is a schematic diagram of a fourth structure of the display module according to an embodiment of this application;

[0026] Figure 11 This is a schematic diagram of the driving principle of the display module in an embodiment of this application;

[0027] Figure 12 This is a test result diagram of the display module of Scheme 1 in this application embodiment;

[0028] Figure 13 This is a test result diagram of the display module of Scheme 2 in this application embodiment;

[0029] Figure 14 This is a test result diagram of the display module of Scheme 3 in this application embodiment;

[0030] Figure 15 This is a brightness test result diagram of the display module of Scheme 1 in this application embodiment;

[0031] Figure 16 This is a graph showing the half-peak width test results of the display module of Scheme 1 in this application.

[0032] In the figure: 1. Diffuser plate; 11. First electrode layer; 12. Polymer liquid crystal layer; 13. Second electrode layer; 14. Encapsulation layer; 2. Cover plate; 3. Upper polarizer; 4. Display panel; 5. Lower polarizer; 6. Light guide plate; 7. Lamp cover; 8. Flexible circuit board; 9. Diffuser layer; 91. First diffuser sublayer; 92. Second diffuser sublayer; 10. Light-emitting part. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] For display devices, user needs for certain attributes vary depending on the usage scenario. For example, entertainment display panels require high brightness to meet high-definition requirements; while educational display panels require high haze and low brightness to achieve a paper-like effect and meet eye protection requirements.

[0036] Currently, entertainment display panels (such as entertainment tablets) on the market require a brightness of 330-600 nits, while educational display panels (such as educational tablets) require a paper-like effect, with a brightness of 200-300 nits and a full width at half maximum (FHWM) of 40%-65%.

[0037] To achieve the required brightness and full width at half maximum (FWHM), such as Figure 1 As shown, existing educational eye-protection display products typically employ a three-layer diffusion structure. The basic principle is to disperse the light source by stacking three layers of diffusion plates in sequence, making it softer and thus achieving an eye-protection effect.

[0038] However, this structure has the following drawbacks: it can only be used as a display product with a certain degree of haze, and cannot be used as a high-brightness, high-definition entertainment product; that is, it can only be used as an educational product, not an entertainment product, and the switching between the two is not possible. Furthermore, the three-layer diffusion structure has a fixed ability to adjust haze, only providing display products with a fixed haze level, and cannot flexibly adjust the haze according to actual needs.

[0039] Therefore, how to provide a new display product structure that allows for flexible switching between educational and entertainment products, and further adjusts the haze of the display product, is an urgent problem to be solved.

[0040] Based on this, see Figure 2 , Figure 3 and Figure 4 This application provides a diffuser plate 1 for a display module. The diffuser plate 1 includes a first electrode layer 11 for receiving driving signals, a second electrode layer 13, and a polymer liquid crystal layer 12 disposed between the first electrode layer 11 and the second electrode layer 13. It also includes at least one encapsulation layer 14, which is disposed on the side of the first electrode layer 11 and / or the second electrode layer 13 away from the polymer liquid crystal layer 12. The haze of the encapsulation layer 14 is 90% to 99%.

[0041] Specifically, the first electrode layer 11 and the second electrode layer 13 are typically transparent electrode layers, and their arrangement does not affect the brightness and haze of the diffuser plate 1. The first electrode layer 11 and the second electrode layer 13 can be electrode layers made of indium tin oxide or alternative materials (including but not limited to materials such as silver nanowires, metal meshes, carbon nanotubes, and graphene).

[0042] When the diffuser plate 1 is applied to a display module, an adjustable viewing angle and brightness liquid crystal display module can be realized based on the diffuser plate 1.

[0043] The polymer liquid crystal layer 12 is an electro-optic material composed of liquid crystal and polymer materials. The polymer liquid crystal layer 12 is an optical film formed by uniformly dispersing nematic liquid crystal microdroplets in a polymer matrix. The polymer liquid crystal layer 12 is a novel liquid crystal functional material with excellent electro-optic properties, including low threshold voltage and saturation voltage, fast response time, and high contrast, and is easily fabricated into films of various thicknesses.

[0044] like Figure 5 As shown, when no electric field is applied between the first electrode layer 11 and the second electrode layer 13, the liquid crystal droplets in the polymer liquid crystal layer 12 are randomly aligned. Because the ordinary refractive index (no) of light passing through the liquid crystal droplets does not match the refractive index (np) of light passing through the polymer matrix, the light undergoes multiple reflections and refractions at the liquid crystal and polymer interface, resulting in the polymer liquid crystal layer 12 being opaque. At this time, the diffuser plate 1 forms a hazy state. When applied to a display module, this creates a display module with a certain degree of haze, achieving a paper-like effect and meeting eye protection requirements.

[0045] like Figure 6As shown, when an electric field is applied along the normal direction of the polymer liquid crystal layer 12 between the first electrode layer 11 and the second electrode layer 13, the liquid crystal droplets align with the electric field. If the ordinary refractive index (no) of the liquid crystal is matched with the refractive index (np) of the polymer, light is transmitted directly without reflection or refraction within the film, and the polymer liquid crystal layer 12 becomes transparent. At this time, the diffuser plate 1 also becomes transparent. When applied to a display module, this forms a display module with high brightness, which can be used in entertainment display products to meet high-definition requirements.

[0046] Furthermore, by controlling different voltages of the applied electric field, the haze of the diffuser plate 1 can be flexibly adjusted. When the applied voltage is larger, the electric field has a greater effect on adjusting the orientation of the liquid crystal droplets, and therefore the haze of the diffuser plate 1 is also larger; when the applied voltage is smaller, the electric field has a smaller effect on adjusting the orientation of the liquid crystal droplets, and therefore the haze of the diffuser plate 1 is also smaller.

[0047] When the electric field is turned off, the orientation of the liquid crystal molecules in the liquid crystal microdroplets in the polymer liquid crystal layer 12 will recover to random orientation under the action of the anchoring energy of the polymer network, and the polymer liquid crystal layer 12 will become opaque again.

[0048] Thus, by applying and not applying an electric field, the diffuser plate 1 can be controlled to switch between a hazy state and a transparent state, and the intensity of the applied electric field can control the degree of haze on the diffuser plate 1. When the diffuser plate 1 is used in a display module, the switchable state setting of the diffuser plate 1 can realize the switching between the hazy state and the high-definition transparent state of the display module, thereby enabling flexible switching between educational and entertainment products. The setting of the diffuser plate 1 with flexibly adjustable haze state allows for flexible adjustment of the haze of the display module.

[0049] Furthermore, to further adjust the haze of the diffuser plate 1 and the display module, the diffuser plate 1 provided in this application further includes at least one encapsulation layer 14, wherein the at least one encapsulation layer 14 is disposed on the side of the first electrode layer 11 and / or the second electrode layer 13 away from the polymer liquid crystal layer 12. For example, as... Figure 2 As shown, the encapsulation layer 14 is disposed only on the side of the first electrode layer 11 away from the polymer liquid crystal layer 12; or, as... Figure 3 As shown, the encapsulation layer 14 is disposed only on the side of the second electrode layer 13 away from the polymer liquid crystal layer 12; or, as... Figure 4 As shown, the encapsulation layer 14 is disposed on both the side of the first electrode layer 11 away from the polymer liquid crystal layer 12 and the side of the second electrode layer 13 away from the polymer liquid crystal layer 12.

[0050] The haze of the encapsulation layer 14 is 90% to 99%. This relatively high haze means that when the encapsulation layer 14 is positioned on the side of the first electrode layer 11 and / or the second electrode layer 13 away from the polymer liquid crystal layer 12, light entering the second electrode layer 13 and / or exiting from the first electrode layer 11 will be atomized by the encapsulation layer 14, thus increasing the atomization effect of the emitted light and improving the haze of the diffuser plate 1. Furthermore, by applying and controlling an electric field, the haze can be flexibly and variablely adjusted.

[0051] For example, the haze of the encapsulation layer 14 can be 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, etc.

[0052] In this application, by applying and not applying an electric field between the first electrode layer 11 and the second electrode layer 13, the polymer liquid crystal layer 12 can be modulated, thereby controlling the diffusion plate 1 to switch between a hazy state and a transparent state. The degree of haze of the diffusion plate 1 can be controlled by adjusting the intensity of the applied electric field. Furthermore, a higher degree of haze encapsulation layer 14 is provided on the side of the first electrode layer 11 and / or the second electrode layer 13 away from the polymer liquid crystal layer 12, which can further atomize the light emitted from the diffusion plate 1, thereby increasing the ability to adjust the haze and achieving flexible and variable adjustment of the haze. When this diffusion plate 1 is applied to a display module, the display module can switch between a hazy state and a high-definition transparent state, thus enabling flexible switching between educational and entertainment products, and the haze of the display module can be flexibly adjusted.

[0053] In some embodiments, see continue to see Figure 4 As shown, there are two encapsulation layers 14, one of which is provided on the side of the first electrode layer 11 and the second electrode layer 13 away from the polymer liquid crystal layer 12.

[0054] Specifically, when both the first electrode layer 11 and the second electrode layer 13 are provided with an encapsulation layer 14 on the side away from the polymer liquid crystal layer 12, when light enters the second electrode layer 13 and exits from the first electrode layer 11, it will be atomized by the encapsulation layer 14 with a larger haze, thereby significantly increasing the atomization effect of the emitted light and improving the haze of the diffuser plate 1.

[0055] See Figure 7 As shown, this application also provides a display module, including a light-emitting part 10, a light guide plate 6, a display panel 4, and a diffuser plate 1 as described in any of the above embodiments, wherein the diffuser plate 1 is located between the light guide plate 6 and the display panel 4.

[0056] Specifically, the light-emitting part 10 can use a cold cathode fluorescent lamp (CCFL) or a light-emitting diode (LED) as its light source. It can be arranged in a direct-lit or side-lit manner. Taking a side-lit LED light source as an example, the light source is located on the side of the light guide plate 6. The light guide plate 6 guides the light emitted by the side-incident light source into a uniform surface light source. Then, the light is uniformly diffused and atomized by the diffuser plate 1. The light emitted from the diffuser plate 1 enters the display panel 4.

[0057] In this application, by setting a diffuser plate 1 in the display module, the switchable state of the diffuser plate 1 can realize the switching between the haze state and the high-definition transparency state of the display module, thereby enabling flexible switching between educational products and entertainment products. The setting of the diffuser plate 1 with flexibly adjustable haze state can realize flexible adjustment of the haze of the display module.

[0058] In some embodiments, see Figure 8 As shown, the display module further includes at least one diffusion layer 9, along the direction from the light guide plate 6 to the display panel 4 (i.e., Figure 8 (in the direction shown by M), the at least one diffusion layer 9 is disposed on at least one side of the diffusion plate 1.

[0059] Specifically, the diffusion layer 9 may be disposed only on the side of the diffusion plate 1 closest to the display panel 4, or only on the side of the diffusion plate 1 furthest from the display panel 4, or simultaneously on both sides of the diffusion plate 1.

[0060] The diffusion layer 9 can be a commonly used diffusion film layer to further homogenize the light, so that the light emitted from the display panel 4 can be more uniform and improve the display effect.

[0061] In practice, the applicant discovered that setting a diffuser plate 1 in the display module allows for flexible adjustment of the haze. Furthermore, if it is desired to further reduce the brightness of the display module and increase its haze, the haze of the diffuser layer 9 can be controlled, enabling the diffuser layer 9 to also have a light-fogging effect.

[0062] Based on this, in some embodiments, the haze of the diffusion layer 9 is greater than that of the diffusion plate 1. Thus, after the encapsulation layer 14 performs the first stage of atomization on the light, the diffusion layer 9 can perform the second stage of atomization on the light. In this way, the two stages of atomization by the encapsulation layer 14 and the diffusion layer 9 can atomize the light more obviously, so that the final display module has a greater haze, which can better meet the needs of eye protection. At the same time, the display module can still meet the needs of high-definition entertainment when powered on.

[0063] In some embodiments, see Figure 9As shown, the diffusion layer 9 is provided, and the diffusion layer 9 includes a first diffusion sub-layer 91 and a second diffusion sub-layer 92 stacked together. The first diffusion sub-layer 91 is disposed close to the diffusion plate 1, and the second diffusion sub-layer 92 is disposed away from the diffusion plate 1. The haze of the first diffusion sub-layer 91 and the second diffusion sub-layer 92 may be the same or different.

[0064] Specifically, when the first diffusion sub-layer 91 and the second diffusion sub-layer 92 are both disposed on the same side of the diffusion plate 1, the haze of the first diffusion sub-layer 91 and the second diffusion sub-layer 92 is the same, which can achieve the same degree of atomization effect on the light emitted from the diffusion plate 1, so as to further atomize the light.

[0065] When the first diffusion sub-layer 91 and the second diffusion sub-layer 92 are both disposed on the same side of the diffusion plate 1, and the haze of the first diffusion sub-layer 91 and the second diffusion sub-layer 92 is different, the first diffusion sub-layer 91 and the second diffusion sub-layer 92 can achieve two haze effects with different degrees of haze on the light emitted from the diffusion plate 1, so as to flexibly adjust the haze of the light and make the haze of the final emitted light more in line with the actual needs of the user.

[0066] Furthermore, the haze of the second diffusion sub-layer 92 is greater than that of the first diffusion sub-layer 91. Thus, the light emitted from the diffusion plate 1 first passes through the first diffusion sub-layer 91 with lower haze, where the light undergoes a first atomization. The light then passes through the second diffusion sub-layer 92 with higher haze, where it undergoes a second atomization with even better results. As a result, the light emitted from the second diffusion sub-layer 92 toward the display panel 4 and from the display panel 4 has a very good atomization effect and a high haze, resulting in excellent eye protection for the display module.

[0067] In some embodiments, see Figure 10 As shown, there are two diffusion layers 9. Along the direction from the light guide plate 6 to the display panel 4, each side of the diffusion plate 1 is provided with one diffusion layer 9.

[0068] Specifically, the haze of the two diffusion layers 9 can be the same or different. The haze of the two diffusion layers 9 can be flexibly adjusted according to the actual haze requirements, thereby achieving flexible adjustment of the haze of the display module.

[0069] In some embodiments, the two diffusion layers 9 have different haze levels, with the diffusion layer 9 located on the side of the diffusion plate 1 closer to the display panel 4 having a greater haze level than the diffusion layer 9 located on the side of the diffusion plate 1 farther from the display panel 4.

[0070] Specifically, when the two diffusion layers 9 are located on opposite sides of the diffusion layer 9, and the haze of the diffusion layer 9 located on the side of the diffusion plate 1 closer to the display panel 4 is greater than the haze of the diffusion layer 9 located on the side of the diffusion plate 1 farther from the display panel 4, the light is first atomized by the diffusion layer 9 with less haze before entering the diffusion plate 1. The light coming out of the diffusion plate 1 is then atomized a second time by the diffusion layer 9 with more haze, and the second atomization effect is even better. In this way, the atomization effect of the light emitted from the diffusion layer 9 with more haze towards the display panel 4 and the light emitted from the display panel 4 is very good, the haze is very large, and the eye protection effect of the display module is excellent.

[0071] The following tests were conducted on the switching between the fogged and transparent states of the display module of this application, as well as the brightness, haze, and peak width of the board in each state, to illustrate the effect of the diffuser plate 1 and the display module.

[0072] Specifically, three display modules were set up for different schemes, and each scheme's display module underwent five repeated tests. The display module for Scheme 1 was... Figure 7 The display module shown has a haze of 96% for diffuser plate 1. The display module of scheme 2 is... Figure 9 The display module shown has a haze of 96% for diffuser plate 1, and haze of 97% for both the first diffuser sublayer 91 and the second diffuser sublayer 92. The display module of Scheme 3 is... Figure 10 The display module shown has a haze of 96% for the diffuser plate 1 and 97% haze for both diffuser layers 9.

[0073] See Figure 11 The schematic diagram of the driving principle shown illustrates the testing process as follows: A variable voltage (0-12V) is provided to the display module. This voltage is transmitted through an internal circuit to the flexible circuit board 8, which then acts on the control circuit of the diffuser plate 1 (i.e., the circuit formed between the first electrode layer 11 and the second electrode layer 13). The voltage is gradually increased to test different display effects under different voltages. The test results are shown below. Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 As shown.

[0074] See Figures 12-16 It can be seen that for the three different display modules, Scheme 1 only has a diffuser plate 1, Scheme 2 has two diffuser layers 9 located above the diffuser plate 1, and Scheme 3 has diffuser layers 9 located both above and below the diffuser plate 1.

[0075] When the voltage is 0V, the brightness of these three display modules is in the range of 200 to 300 nits and the half-maximum width (FHWM) is in the range of 40% to 65%, which meets the brightness and FHWM requirements of educational display products and can be used as educational display products.

[0076] As the voltage gradually increases, the brightness of all three structures gradually increases, while the half-width at half-maximum (WHM) gradually decreases. When the voltage increases to 12V, the brightness of all three structures is between 330 and 600 nits, which meets the high-definition requirements of entertainment display products.

[0077] Therefore, the test results show that, due to the setting of the diffuser plate 1, the display module of this application can switch between hazy state and high-definition transparent state, thereby enabling it to flexibly switch between educational products and entertainment products, and the haze of the display module can be flexibly adjusted.

[0078] See also Figures 12-14 As can be seen, compared to Scheme 1, Schemes 2 and 3 incorporate a diffusion layer 9 with greater haze in their display modules. Therefore, without applied voltage, the display modules of Schemes 2 and 3 exhibit greater haze and lower brightness than Scheme 1. Even after applying voltage, the haze and brightness of Schemes 2 and 3 remain higher than Scheme 1. Thus, Schemes 2 and 3 are suitable for scenarios or users with higher haze requirements, providing a better paper-like effect and meeting better eye protection needs. However, the brightness of the display modules in Schemes 2 and 3 still meets high-definition requirements after applying voltage, thus not affecting their use as entertainment display products.

[0079] Therefore, the test results show that by adding a larger diffusion plate 9 to the existing diffusion plate 1, the haze of the display product can be further improved to meet better eye protection requirements, without affecting its use as an entertainment display product.

[0080] This application also provides a display device, including the display module described in any of the above embodiments.

[0081] The display device can be a product with image display function, such as: monitor, television, billboard, digital photo frame, laser printer with display function, telephone, mobile phone, personal digital assistant (PDA), digital camera, portable camcorder, viewfinder, navigator, vehicle, large wall area, home appliance, information query equipment (such as business query equipment of e-government, bank, hospital, power and other departments, monitor, etc.).

[0082] The display device has the technical effects described in any of the above embodiments, which will not be elaborated here.

[0083] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this application as described above, which are not provided in the details for the sake of brevity.

[0084] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A diffuser plate for a display module, characterized in that, The device includes a first electrode layer for receiving a drive signal, a second electrode layer, and a polymer liquid crystal layer disposed between the first electrode layer and the second electrode layer. It also includes at least one encapsulation layer disposed on the side of the first electrode layer and / or the second electrode layer away from the polymer liquid crystal layer. The haze of the encapsulation layer is 90% to 99%.

2. The diffuser plate according to claim 1, characterized in that, The encapsulation layer is provided in two parts, with one encapsulation layer provided on the side of the first electrode layer and the second electrode layer away from the polymer liquid crystal layer.

3. A display module, characterized in that, It includes a light-emitting part, a light guide plate, a display panel, and a diffusion plate as described in any one of claims 1 to 2, wherein the diffusion plate is located between the light guide plate and the display panel.

4. The display module according to claim 3, characterized in that, It also includes at least one diffusion layer, which is disposed on at least one side of the diffusion plate along the direction from the light guide plate to the display panel.

5. The display module according to claim 4, characterized in that, The haze of the diffusion layer is greater than that of the diffusion plate.

6. The display module according to claim 5, characterized in that, The diffusion layer is provided, and the diffusion layer includes a first diffusion sub-layer and a second diffusion sub-layer stacked together. The first diffusion sub-layer is disposed close to the diffusion plate, and the second diffusion sub-layer is disposed away from the diffusion plate. The haze of the first diffusion sub-layer and the second diffusion sub-layer may be the same or different.

7. The display module according to claim 6, characterized in that, The haze of the second diffuser layer is greater than that of the first diffuser layer.

8. The display module according to claim 5, characterized in that, The diffusion layer is provided in two parts, with one diffusion layer provided on each side of the diffusion plate along the direction from the light guide plate to the display panel.

9. The display module according to claim 8, characterized in that, The two diffusion layers have different levels of haze; the diffusion layer located on the side of the diffusion plate closer to the display panel has a higher level of haze than the diffusion layer located on the side of the diffusion plate farther from the display panel.

10. A display device comprising the display module according to any one of claims 3 to 9.

Images