Display device and method of manufacturing the same

Abstract

The application discloses a display device and a preparation method thereof. The display device comprises a display module and a light regulation module. The display module comprises a light-out side. The light regulation module is formed on the light-out side of the display module and comprises a first regulation layer, a spacer layer group and a second regulation layer which are stacked along the thickness direction of the display module. The spacer layer group comprises a flat layer and at least one transparent stress layer. The transparent stress layer and the flat layer are stacked along the arrangement direction of the display module and the light regulation module. The at least one transparent stress layer comprises a first transparent stress layer. One side surface of the first transparent stress layer is in contact with the first regulation layer, and the other side surface is in contact with the flat layer. The orthographic projection of the first transparent stress layer on the display module covers at least the orthographic projection of the first regulation layer on the display module. The display device can improve the adverse effects caused by the different thermal expansion coefficients of the first regulation layer and the flat layer, thereby improving the yield of products.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to a display device and its manufacturing method. Background Technology

[0002] The near-eye 3D light field display project utilizes a dual-layer microlens array technology, directly integrating a dual-layer microlens array onto the display module to form a near-eye 3D light field display device. This device comprises a microlens array film layer and a planarization layer in contact with the microlens array film layer. Due to the difference in thermal expansion coefficients between the microlens array film layer and the planarization layer, wrinkles and separation between adjacent film layers are prone to occur, severely impacting product yield. Summary of the Invention

[0003] The objective of this invention is to at least solve the problems of film layer wrinkling and separation between adjacent film layers in display devices. This objective is achieved through the following technical solution:

[0004] A first aspect of the present invention provides a display device comprising:

[0005] Display module, including the light-emitting side;

[0006] A light control module, formed on the light-emitting side of the display module, includes a first control layer, an isolation layer group, and a second control layer stacked together. The isolation layer group includes a planarization layer and at least one transparent stress layer. The transparent stress layer and the planarization layer are stacked together along the arrangement direction of the display module and the light control module. The at least one transparent stress layer includes a first transparent stress layer. One side of the first transparent stress layer contacts the first control layer, and the other side contacts the planarization layer. The orthographic projection of the first transparent stress layer on the display module at least covers the orthographic projection of the first control layer on the display module.

[0007] The display device provided in this application includes a display module and a light control module. The display module emits light for display, and the light control module controls the light emitted by the display module. The display module includes a light-emitting side, from which light emitted from the display module exits. The light control module is formed on the light-emitting side of the display module to allow light emitted from the display module to enter the light control module for display. The light control module includes a first control layer, an isolation layer group, and a second control layer stacked along the thickness direction of the display module. The first and second control layers are used to control the light. The isolation layer group includes a planarization layer and at least one transparent stress layer. The transparent stress layer and the planarization layer are stacked in a direction away from the display module. The transparent stress layer provides support, and the planarization layer achieves planarization of the film layers. Because a transparent stress layer is provided within the isolation layer group, the transparent stress layer can provide good support when heat is transferred downwards during the fabrication of the first and second control layers that are furthest from the display module. This reduces the degree of thermal expansion of the planarization layer, thereby improving the wrinkling phenomenon caused by the difference in thermal expansion coefficients between the first and second control layers that are closer to the display module and the planarization layer. It also improves the separation problem caused by the inconsistent expansion coefficients between adjacent film layers in the light control module, thereby improving the product yield.

[0008] In some embodiments of this application, the at least one transparent stress layer further includes a second transparent stress layer, one side surface of the second transparent stress layer is in contact with the planarization layer, and the other side surface is in contact with the second control layer. The orthographic projection of the second transparent stress layer on the display module at least covers the orthographic projection of the second control layer on the display module.

[0009] In some embodiments of this application, the material of the transparent stress layer includes inorganic materials.

[0010] In some embodiments of this application, the material of the transparent stress layer includes a transparent inorganic oxide film.

[0011] In some embodiments of this application, the thickness of the transparent stress layer ranges from 1000 angstroms to 6000 angstroms.

[0012] In some embodiments of this application, the first control layer includes a first lens, the first lens including a first surface protruding toward one side of the second control layer, the first lens being elongated and extending along a first direction;

[0013] The second control layer includes a second lens, the second lens including a second surface protruding away from the first control layer, the second lens being elongated and extending along a second direction;

[0014] Wherein, the first direction intersects the second direction, and both the first direction and the second direction are perpendicular to the arrangement direction of the display module and the light control module.

[0015] In some embodiments of this application, the second control layer is located on the side of the first control layer away from the display module, the orthographic projection of the first transparent stress layer on the display module coincides with the orthographic projection of the first lens on the display module, and the surface of the first transparent stress layer away from the display module protrudes in a direction away from the display module; or, the orthographic projection of the first transparent stress layer on the display module covers the display module, the first transparent stress layer includes a first portion in contact with the first lens and a second portion in contact with the display module, the second portion is located between adjacent first lenses, the surface of the first portion away from the display module protrudes in a direction away from the display module, and the surface of the second portion away from the display module is planar.

[0016] In some embodiments of this application, the display module includes a liquid crystal display module, the liquid crystal display module includes an array substrate and a filter layer stacked together, and the light control module is located on the side of the filter layer away from the array substrate and in contact with the filter layer.

[0017] In some embodiments of this application, the display module includes an organic light-emitting diode (OLED) display panel, the OLED display panel includes an encapsulation layer, and the light control module is in contact with the encapsulation layer.

[0018] A second aspect of the present invention provides a method for manufacturing a display device, comprising:

[0019] A display module is provided, the display module including a light-emitting side;

[0020] A light control module is formed on the light-emitting side of the display module. The light control module includes a first control layer, an isolation layer group, and a second control layer stacked together. The isolation layer group includes a planarization layer and at least one transparent stress layer. The transparent stress layer and the planarization layer are stacked together along the arrangement direction of the display module and the light control module. The at least one transparent stress layer includes a first transparent stress layer. One side of the first transparent stress layer contacts the first control layer, and the other side contacts the planarization layer. The orthographic projection of the first transparent stress layer on the display module at least covers the orthographic projection of the first control layer on the display module.

[0021] In some embodiments of this application, the display module includes a liquid crystal display module, and the preparation temperature of the transparent stress layer is less than 250°C.

[0022] In some embodiments of this application, the display module includes an organic light-emitting diode display panel, and the preparation temperature range of the transparent stress layer is 25℃-110℃. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0025] Figure 2 yes Figure 1 A top-down view;

[0026] Figure 3 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0029] Figure 6 This is a top view of a second transparent stress layer in a display device provided in an embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0032] Figure 9 This is a flowchart illustrating a method for manufacturing a display device according to an embodiment of this application;

[0033] Figures 10 to 14 This is a schematic diagram of film layer changes during the fabrication process of a display device provided in this application embodiment;

[0034] Figure 15 This is a top view of a second transparent stress layer in a display device provided in an embodiment of this application.

[0035] The attached figures are labeled as follows:

[0036] 1. Display device; 11. Display module; 111. Liquid crystal display module; 1111. Array substrate; 1112. Filter layer; 112. Organic light-emitting diode display panel; 1121. Substrate; 1122. Driving circuit layer; 1123. Light-emitting layer; 1124. Encapsulation layer; 12. Light control module; 121. First control layer; 1211. First lens; 122. Isolation layer group; 1221. Transparent stress layer; 1222. Planarization layer; 1223. First transparent stress layer; 1224. Second transparent stress layer; 123. Second control layer; 1231. Second lens. Detailed Implementation

[0037] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0038] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0040] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0041] like Figures 1 to 3 As shown, according to an embodiment of the present invention, a display device 1 is provided, which includes a display module 11 and a light control module 12. The display module 11 includes a light-emitting side. The light control module 12 is formed on the light-emitting side of the display module 11 and includes a first control layer 121, an isolation layer group 122, and a second control layer 123 stacked along the thickness direction of the display module 11. The isolation layer group 122 includes a planarization layer 1222 and at least one transparent stress layer 1221. The transparent stress layer 1221 and the planarization layer 1222 are stacked along the arrangement direction of the display module 11 and the light control module 12. The at least one transparent stress layer 1221 includes a first transparent stress layer 1221. One side surface of the first transparent stress layer 1221 contacts the first control layer 121, and the other side contacts the planarization layer 1222. The orthographic projection of the first transparent stress layer 1221 on the display module 11 at least covers the orthographic projection of the first control layer 121 on the display module 11.

[0042] In the light control module 12, the first control layer 121 is located on the side of the second control layer 123 closer to the display module 11, or the first control layer 121 is located on the side of the second control layer 123 farther away from the display module.

[0043] The display device 1 provided in this application includes a display module 11 and a light control module 12. The display module 11 is used to emit light for display, and the light control module 12 is used to control the light emitted by the display module 11. The display module 11 includes a light-emitting side, from which light emitted from the display module 11 exits. The light control module 12 is formed on the light-emitting side of the display module 11 so that the light emitted by the display module 11 can enter the light control module 12 for display. The light control module 12 includes a first control layer 121, an isolation layer group 122, and a second control layer 123 stacked along the thickness direction of the display module 11. The first control layer 121 and the second control layer 123 are used to control the light. The isolation layer assembly 122 includes a planarization layer 1222 and at least one transparent stress layer 1221. The transparent stress layer 1221 and the planarization layer 1222 are stacked in a direction away from the display module 11. The transparent stress layer 1221 provides support, and the planarization layer 1222 is used to planarize the film layers. Because the transparent stress layer 1221 is provided within the isolation layer assembly 122, it provides good support during the downward transfer of heat when fabricating the first control layer 121 and the second control layer 123 that is away from the display module 11. This reduces the degree of thermal expansion of the planarization layer 1222, mitigating the wrinkling phenomenon caused by the difference in thermal expansion coefficients between the first control layer 121 and the second control layer 123 that is closer to the display module 11 and the planarization layer 1222. It also improves the separation problem caused by the inconsistent expansion coefficients between adjacent film layers within the light control module 12, thereby improving the product yield.

[0044] Specifically, the transparent stress layer 1221 has a rigid support effect, thereby limiting the deformation of the film layer in contact with it, and improving the problem of wrinkles or separation from adjacent film layers caused by excessive deformation. Furthermore, the transparent stress layer 1221 is made of a transparent material with a light transmittance greater than 80%, reducing adverse effects on the display effect of the display device 1, thus ensuring the display quality of the display device 1.

[0045] Specifically, the arrangement directions of the display module 11 and the light control module 12 include the direction from the display module 11 to the light control module 12 and the direction from the light control module 12 to the display module 11.

[0046] In one feasible implementation, such as Figure 1 and Figure 2As shown, the light control module 12 can be used to achieve a 3D display effect. The first control layer 121 includes a first lens 1211, which has a first surface protruding toward the side of the second control layer 123. The first lens 1211 is elongated and extends along a first direction. The second control layer 123 includes a second lens 1231, which has a second surface protruding away from the side of the first control layer 121. The second lens 1231 is elongated and extends along a second direction. The first direction and the second direction intersect, and both the first direction and the second direction are perpendicular to the arrangement direction of the display module 11 and the light control module 12.

[0047] In naked-eye 3D or AR / VR virtual reality display technologies, microlens arrays are needed to display three-dimensional images or virtual images. The first control layer 121 and the second control layer 123 each include a microlens array. The first control layer 121 includes a first lens 1211, and the second control layer 123 includes a second lens 1231. The first lens 1211 and the second lens 1231 extend in different directions. 3D display or AR / VR virtual reality display can be achieved through the first lens 1211 and the second lens 1231.

[0048] In one feasible implementation, such as Figure 1 , Figure 3 and Figure 4 As shown, the isolation layer group 122 includes at least one transparent stress layer 1221, which is in contact with the planarization layer 1222.

[0049] In the above embodiments, such as Figure 1 , Figure 3 As shown, the isolation layer group 122 may consist of only one transparent stress layer 1221, which is in contact with the first regulating layer 121 and the planarization layer 1222. Alternatively, as... Figure 4 As shown, the isolation layer group 122 may include two transparent stress layers 1221, one of which is located on the side of the planarization layer 1222 facing the first control layer 121, and the other is located on the side of the planarization layer 1222 away from the first control layer 121, and both transparent stress layers 1221 are in contact with the planarization layer 1222. It may also include multiple transparent stress layers 1221 and multiple planarization layers; this application does not particularly limit this.

[0050] The transparent stress layer 1221 is in contact with the planarization layer 1222. The rigidity of the transparent stress layer 1221 can be used to support the planarization layer 1222, thereby reducing the deformation of the planarization layer 1222 and improving the problem of wrinkles and separation caused by the difference in deformation between the planarization layer 1222 and the first control layer 121. Specifically, when the isolation layer group 122 may include two transparent stress layers 1221, one of which is located on the side of the planarization layer 1222 facing the first control layer 121, and the other is located on the side of the planarization layer 1222 away from the first control layer 121, the transparent stress layer 1221 that contacts the side of the planarization layer 1222 facing the first control layer 121 can contact the first control layer 121. Thus, the transparent stress layer 1221 can separate the first control layer 121 from the planarization layer 1222, thereby preventing the planarization layer 1222 and the first control layer 121 from separating due to differences in deformation. At the same time, the rigidity of the transparent stress layer 1221 itself can be used to support the planarization layer 1222 and the first control layer 121 to reduce the deformation of the planarization layer 1222 and the first control layer 121, thereby improving the problem of wrinkles caused by the difference in deformation between the planarization layer 1222 and the first control layer 121.

[0051] In one feasible implementation, such as Figure 4 As shown, at least one transparent stress layer 1221 also includes a second transparent stress layer 1224. One side surface of the second transparent stress layer 1224 is disconnected from the planarization layer 1222, and the other side surface is in contact with the second control layer 123. The orthographic projection of the second transparent stress layer 1224 on the display module 11 at least covers the orthographic projection of the second control layer 123 on the display module 11.

[0052] In the above embodiments, the isolation layer group 122 includes a first transparent stress layer 1223 and a second transparent stress layer 1224, such as Figure 4 As shown, the first transparent stress layer 1223 is in contact with the first adjustment layer 121, that is, the first transparent stress layer 1223 is located between the first adjustment layer 121 and the planarization layer 1222, and the first transparent stress layer 1223 is in contact with the first adjustment layer 121 and the planarization layer 1222 respectively. Thus, the transparent stress layer 1221 can provide support for the first adjustment layer 121 and the planarization layer 1222 respectively, reduce the deformation of the two, and thus improve the formation of wrinkles.

[0053] In the above embodiment, the second transparent stress layer 1224 is in contact with the second control layer 123, and the orthographic projection of the second transparent stress layer 1224 on the display module 11 at least covers the orthographic projection of the second control layer 123 on the display module 11.

[0054] The second transparent stress layer 1224 is located between the planarization layer 1222 and the second control layer 123, thereby providing support for the planarization layer 1222 to reduce its deformation and thus reduce wrinkles. The orthographic projection of the second transparent stress layer 1224 on the display module 11 at least covers the orthographic projection of the second control layer 123 on the display module 11. This allows for the fabrication of a flat second transparent stress layer 1224 after planarization by the planarization layer 1222. Then, the second control layer 123 is formed on the side of the second transparent stress layer 1224 away from the planarization layer 1222. The second transparent stress layer 1224 provides a flat surface for the second control layer 123, improving the fabrication yield of the second control layer 123. Furthermore, since the second control layer 123 is fabricated on a flat surface, the difficulty of parameter design for the second control layer 123 is reduced, facilitating the achievement of the desired control effect.

[0055] In one feasible implementation, such as Figure 4 As shown, the second control layer 123 is located on the side of the first control layer 121 that is away from the display module 11. The orthographic projection of the first transparent stress layer 1223 on the display module 11 coincides with the orthographic projection of the first lens 1211 on the display module 11. The surface of the first transparent stress layer 1223 that is away from the display module 11 protrudes in the direction away from the display module 11. Alternatively, the orthographic projection of the first transparent stress layer 1223 on the display module 11 covers the display module 11. The first transparent stress layer 1223 includes a first part that contacts the first lens 1211 and a second part that contacts the display module 11. The second part is located between adjacent first lenses 1211. The surface of the first part that is away from the display module 11 protrudes in the direction away from the display module 11. The surface of the second part that is away from the display module 11 is planar.

[0056] In the above embodiments, such as Figure 5 As shown, the first transparent stress layer 1223 can cover only the side surface of the first lens 1211 facing away from the display module 11, thereby providing support and constraint for the first lens 1211, reducing the deformation of the first lens 1211, thus reducing wrinkles in the first lens 1211. Simultaneously, it can reduce the area of ​​light obstruction by the first transparent stress layer 1223, helping to improve the light extraction efficiency of the display device 1. Or as... Figure 1 As shown, the first transparent stress layer 1223 can partially cover the side surface of the first lens 1211 facing away from the display module 11, and another part covers the part of the surface of the display module 11 opposite to the adjacent first lens 1211. This allows the first transparent stress layer 1223 to be fabricated as a whole, which simplifies the fabrication process and reduces the fabrication cost.

[0057] In one feasible embodiment, the second transparent stress layer 1224 can be a film layer fabricated as a single layer, thereby allowing for a larger contact area between the second transparent stress layer 1224 and the planarization layer 1222, thus improving the supporting effect of the second transparent stress layer 1224 on the planarization layer 1222 and further reducing the deformation of the planarization layer 1222. Alternatively, as... Figure 6 As shown, the second transparent stress layer 1224 can be a patterned film layer, meaning that the orthographic projection area of ​​the second transparent stress layer 1224 on the display module 11 is smaller than the orthographic projection area of ​​the planarization layer 1222 on the display module 11. Since the second lens 1231 can be a strip-shaped structure extending along the second direction, the second transparent stress layer 1224 can also include a strip-shaped region extending along the second direction. The strip-shaped region provides a flat fabrication surface for the second lens 1231, and the second lens 1231 is fabricated on the strip-shaped region, thereby reducing the difficulty of parameter design for the second control layer 123, so as to achieve the preset control effect. In addition to the strip-shaped region, the second transparent stress layer 1224 can also include other regions, which are not particularly limited in this application.

[0058] In one feasible implementation, the transparent stress layer 1221 is made of an inorganic material. Specifically, the transparent stress layer may be made of a transparent inorganic oxide film.

[0059] Specifically, inorganic materials are more rigid than organic materials, and the first regulating layer 121 and planarization layer 1222 are made of organic materials. The rigidity of the transparent stress layer 1221 formed by inorganic materials is greater than that of the first regulating layer 121 and planarization layer 1222 formed by organic materials, and inorganic materials are not easily deformed by heat, thus providing support for the planarization layer 1222 and the first regulating layer 121. The transparent stress layer 1221 may include SiN, SiCN, SiON, ITO, IZO or other transparent oxide semiconductor thin films, and this application does not make any special limitation in this regard.

[0060] In one feasible implementation, the thickness of the transparent stress layer 1221 ranges from 1000 angstroms to 6000 angstroms.

[0061] In the above embodiments, the thickness of the transparent stress layer 1221 is in the range of 1000 angstroms to 6000 angstroms, which can prevent the transparent stress layer 1221 from being too thin and having weak rigidity and support, and can also prevent the transparent stress layer 1221 from being too thick and affecting the performance of the display device 1. For example, if the transparent stress layer 1221 is too thick, it will affect the thinness of the display device 1. If the transparent stress layer 1221 is too thick, it will also affect the light transmittance, thereby affecting the light emission rate of the display device 1, and thus affecting the display effect of the display device 1.

[0062] Specifically, the thickness of the transparent stress layer 1221 can be 1000 angstroms, 1200 angstroms, 2100 angstroms, 2300 angstroms, 3400 angstroms, 3600 angstroms, 4700 angstroms, 5000 angstroms, 5150 angstroms, 5300 angstroms or 6000 angstroms, etc., and this application does not make any special limitation on it.

[0063] In one feasible implementation, such as Figure 7 As shown, the display module 11 includes a liquid crystal display module 111, which includes an array substrate 1111 and a filter layer 1112 stacked together, and the light control module 12 is in contact with the filter layer 1112.

[0064] In the above embodiments, the display module 11 may include a liquid crystal display module 111, that is, the display device 1 may be a liquid crystal display device. The liquid crystal display module 111 includes an array substrate 1111 and a filter layer 1112 stacked together. The light control module 12 is in contact with the filter layer 1112. After the light is emitted, it is filtered by the filter layer 1112 and then controlled by the light control module 12.

[0065] In one feasible implementation, such as Figure 8 As shown, the display module 11 includes an organic light-emitting diode (OLED) display panel 112, the OLED display panel 112 includes an encapsulation layer 1124, and the light control module 12 is in contact with the encapsulation layer 1124.

[0066] In the above embodiments, the display module 11 includes an OLED display panel 112. The OLED display panel 112 includes a substrate 1121 and a driving circuit layer 1122, a light-emitting layer 1123, and an encapsulation layer 1124 stacked along a direction away from the substrate 1121. The encapsulation layer 1124 is used to encapsulate the light-emitting units within the light-emitting layer 1123 to reduce the intrusion of water and oxygen into the interior of the light-emitting layer 1123, thereby reducing the adverse effects on display quality. The light control module 12 is formed on the side of the encapsulation layer 1124 away from the light-emitting layer 1123, thereby avoiding adverse effects on the encapsulation yield.

[0067] The display module 11 may also include a touch layer, which may be located between the encapsulation layer 1124 and the light control module 12. This application does not make any special limitation on this.

[0068] This application also provides a method for manufacturing the display device 1, such as... Figure 9 As shown, it includes:

[0069] S200 provides a display module 11, which includes a light-emitting side.

[0070] Specifically, the display module 11 can be a liquid crystal display module 11, an OLED display module 11, or a micro LED display module 11, etc., and this application does not make any special limitation in this regard. The light-emitting side refers to the side in the display module 11 from which light is emitted.

[0071] S400, a light control module 12 is formed on the light-emitting side of the display module 11. The light control module 12 includes a first control layer 121, an isolation layer group 122, and a second control layer 123 stacked along the thickness direction of the display module 11. The isolation layer group 122 includes a planarization layer 1222 and at least one transparent stress layer 1221. The transparent stress layer 1221 and the planarization layer 1222 are stacked along the direction away from the display module 11. The at least one transparent stress layer 1221 includes a first transparent stress layer 1223. One side of the first transparent stress layer 1223 is in contact with the first control layer 121, and the other side is in contact with the planarization layer 1222. The orthographic projection of the first transparent stress layer 1223 on the display module 11 at least covers the orthographic projection of the first control layer 121 on the display module 11.

[0072] Specifically, such as Figure 10 As shown, the first control layer 121 can be located on the side of the second control layer 123 close to the display module. During the fabrication process, the first control layer 121 can be fabricated as a whole and then patterned to form multiple spaced strip-shaped first lenses 1211. During the formation of the isolation layer group 122, only one layer of first transparent stress layer 1223 can be formed, or a second transparent stress layer 1224 can also be formed.

[0073] Among them, such as Figure 11 As shown, when forming the first transparent stress layer 1223, the entire layer can be fabricated directly on the first control layer 121 and the display module 11, or as... Figure 12 As shown, after the entire first control layer 121 is fabricated, it is patterned, retaining only the portion of the first control layer 121 located on the surface opposite to the display module 11. Figure 13 As shown, a flat layer 1222 is then formed, which is a complete layer.

[0074] When forming the second transparent stress layer 1224, such as Figure 14 and Figure 15 As shown, a second transparent stress layer 1224 can be formed as a single layer on the surface of the planarization layer 1222 facing away from the display module 11, and then a second adjustment layer 123 can be formed on the second transparent stress layer 1224. Alternatively, the second transparent stress layer 1224 can be patterned after being fabricated as a single layer, such as... Figure 6 As shown, a strip-shaped region extending along the second direction is retained, and then a second lens 1231 is formed on the strip-shaped region. The strip-shaped region and the second lens 1231 can correspond one-to-one.

[0075] In the preparation method provided in this application, a transparent stress layer 1221 is prepared in the light control module 12. The transparent stress layer 1221 has a rigid support effect, so that when the heat is transferred downward when the first control layer 121 and the second control layer 123 are prepared away from the display module 11, the transparent stress layer 1221 can play a good supporting role, thereby reducing the degree of thermal expansion of the planarization layer 1222. This improves the wrinkling phenomenon caused by the difference in thermal expansion coefficient between the first control layer 121 and the second control layer 123 and the planarization layer 1222, and also improves the separation problem caused by the inconsistent silver expansion between adjacent film layers in the light control module 12, thereby improving the product yield.

[0076] In one feasible implementation, the transparent stress layer 1221 is formed by plasma-enhanced chemical vapor deposition, atomic layer deposition, or magnetron sputtering.

[0077] In the above embodiments, the transparent stress layer 1221 is prepared by plasma-enhanced chemical vapor deposition, atomic layer deposition, or magnetron sputtering. The process is mature, simple, and yields high quality.

[0078] In one feasible embodiment, the display module 11 includes a liquid crystal display module 11, and the transparent stress layer 1221 is prepared at a temperature of less than 250°C.

[0079] In the above embodiments, when the display module 11 includes a liquid crystal display module 11, in order to ensure the performance of the liquid crystal display module 11, the preparation temperature of the transparent stress layer 1221 can be less than 250°C.

[0080] In one feasible embodiment, the display module 11 includes an organic light-emitting diode display panel 112, and the transparent stress layer 1221 is prepared at a temperature range of 25°C to 110°C.

[0081] In the above embodiments, when the display module 11 includes an organic light-emitting diode display panel 112, since high temperature environment can easily affect the yield of the inner film layer of the organic light-emitting diode display panel 112, thereby affecting the performance of the display module 11, the preparation temperature of the transparent stress layer 1221 can be controlled within the range of 25℃-110℃, thereby avoiding the adverse effects of the preparation of the transparent stress layer 1221 on the yield of the display module 11.

[0082] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A display device, characterized in that, include: Display module, including the light-emitting side; A light control module is formed on the light-emitting side of the display module, comprising a first control layer, an isolation layer group, and a second control layer stacked along the thickness direction of the display module. The isolation layer group includes a planarization layer and at least one transparent stress layer. The transparent stress layer and the planarization layer are stacked along the arrangement direction of the display module and the light control module. The at least one transparent stress layer includes a first transparent stress layer. One side of the first transparent stress layer contacts the first control layer, and the other side contacts the planarization layer. The orthographic projection of the first transparent stress layer on the display module at least covers the orthographic projection of the first control layer on the display module. The at least one transparent stress layer further includes a second transparent stress layer, one side surface of the second transparent stress layer is in contact with the planarization layer, and the other side surface is in contact with the second control layer. The orthographic projection of the second transparent stress layer on the display module at least covers the orthographic projection of the second control layer on the display module.

2. The display device according to claim 1, characterized in that, The transparent stress layer is made of inorganic materials.

3. The display device according to claim 2, characterized in that, The transparent stress layer is made of a transparent inorganic oxide film.

4. The display device according to claim 1, characterized in that, The thickness of the transparent stress layer ranges from 1000 angstroms to 6000 angstroms.

5. The display device according to claim 1, characterized in that, The first control layer includes a first lens, the first lens including a first surface protruding toward one side of the second control layer, the first lens being elongated and extending along a first direction; The second control layer includes a second lens, the second lens including a second surface protruding away from the first control layer, the second lens being elongated and extending along a second direction; Wherein, the first direction intersects the second direction, and both the first direction and the second direction are perpendicular to the arrangement direction of the display module and the light control module.

6. The display device according to claim 5, characterized in that, The second control layer is located on the side of the first control layer away from the display module. The orthographic projection of the first transparent stress layer on the display module coincides with the orthographic projection of the first lens on the display module. The surface of the first transparent stress layer away from the display module protrudes in a direction away from the display module. Alternatively, the orthographic projection of the first transparent stress layer on the display module covers the display module. The first transparent stress layer includes a first portion in contact with the first lens and a second portion in contact with the display module. The second portion is located between adjacent first lenses. The surface of the first portion away from the display module protrudes in a direction away from the display module. The surface of the second portion away from the display module is planar.

7. The display device according to claim 1, characterized in that, The display module includes a liquid crystal display module, which includes an array substrate and a filter layer stacked together. The light control module is located on the side of the filter layer away from the array substrate and is in contact with the filter layer.

8. The display device according to claim 1, characterized in that, The display module includes an organic light-emitting diode (OLED) display panel, the OLED display panel includes an encapsulation layer, and the light control module is in contact with the encapsulation layer.

9. A method for manufacturing a display device, characterized in that, include: A display module is provided, the display module including a light-emitting side; A light control module is formed on the light-emitting side of the display module. The light control module includes a first control layer, an isolation layer group, and a second control layer stacked together. The isolation layer group includes a planarization layer and at least one transparent stress layer. The transparent stress layer and the planarization layer are stacked together along the arrangement direction of the display module and the light control module. The at least one transparent stress layer includes a first transparent stress layer and a second transparent stress layer. One side surface of the first transparent stress layer contacts the first control layer, and the other side contacts the planarization layer. The orthographic projection of the first transparent stress layer on the display module at least covers the orthographic projection of the first control layer on the display module. One side surface of the second transparent stress layer contacts the planarization layer, and the other side surface contacts the second control layer. The orthographic projection of the second transparent stress layer on the display module at least covers the orthographic projection of the second control layer on the display module.

10. The preparation method according to claim 9, characterized in that, The display module includes a liquid crystal display module, and the preparation temperature of the transparent stress layer is less than 250°C.

11. The preparation method according to claim 9, characterized in that, The display module includes an organic light-emitting diode display panel, and the preparation temperature range of the transparent stress layer is 25℃-110℃.

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