Display module, method of manufacturing display module, and display device

Abstract

The application discloses a display module, a method for manufacturing the display module and a display device. The display module comprises a display panel, an electrically-controlled light-adjusting structure and a cover plate. The electrically-controlled light-adjusting structure is located on one side of the display panel. The electrically-controlled light-adjusting structure is configured to be in a non-light-transmitting state when the display panel does not emit light and in a light-transmitting state when the display panel emits light. The cover plate is located on the side of the electrically-controlled light-adjusting structure away from the display panel. Thus, when the display panel emits light, the electrically-controlled light-adjusting structure is in the light-transmitting state, which does not affect the light emission of the display panel. When the display panel does not emit light and is in a black screen state, the electrically-controlled light-adjusting structure is in the non-light-transmitting state, which can effectively absorb and refract the external incident light and the reflected light of the cathode. The external light can be prevented from irradiating the cathode layer, and the problem of poor one-body black effect in the black screen state is effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of display technology, specifically relating to display modules, methods for preparing display modules, and display devices. Background Technology

[0002] With the rapid development of the display industry, OLED (Organic Light-Emitting Diode) display modules utilize polarizers bonded to the panel to reduce the impact of ambient light on display performance. While polarizers act as anti-reflective agents in OLED modules, their presence reduces OLED brightness by 50-60% after passing through the polarizer. This completely masks the low-power characteristic of OLEDs. Therefore, the COE (Color Filter on Encapsulation) structure emerged. The COE structure eliminates the need for polarizers, replacing them with a color filter fabricated on the encapsulation layer, thus addressing the issue of low power consumption in display modules that previously required polarizer bonding.

[0003] However, the COE structure suffers from a poor overall black effect. Specifically, when the display panel is off, the reflectivity of external light reaching the cathode layer is greatly increased, resulting in significant light leakage when using COE products in a black screen state. Users can see light leakage beyond black when using the screen in this state, causing the screen display to be not completely black, resulting in a poor overall black effect and affecting the user's viewing experience. Summary of the Invention

[0004] The present invention aims to improve at least one of the above-mentioned technical problems to at least some extent.

[0005] To address the aforementioned technical problems, this invention provides a display module comprising a display panel, an electrically controlled dimming structure, and a cover plate. The electrically controlled dimming structure is located on one side of the display panel and is configured to be opaque when the display panel is not emitting light and translucent when the display panel is emitting light. The cover plate is located on the side of the electrically controlled dimming structure away from the display panel. Therefore, when the display panel is emitting light, the electrically controlled dimming structure is translucent, not affecting the light emission of the display panel; when the display panel is not emitting light and is in a black screen state, the electrically controlled dimming structure is opaque, effectively absorbing and refracting incident light and reflected light from the cathode, preventing external light from reaching the cathode layer, and effectively improving the problem of poor overall black effect in a black screen state.

[0006] According to an embodiment of the present invention, the electrically controlled dimming structure includes a first conductive substrate, a dimming layer, and a second conductive substrate stacked together. Therefore, by controlling the voltage between the first and second conductive substrates, the particle arrangement in the dimming layer can be controlled, thereby controlling whether the electrically controlled dimming structure is in a transparent or opaque state.

[0007] According to an embodiment of the present invention, the material forming the dimming layer includes polymer-dispersed liquid crystal. Therefore, the dimming layer can be adjusted to a transparent or opaque state by adjusting the voltage between the first conductive substrate and the second conductive substrate.

[0008] According to an embodiment of the present invention, the display module further includes a first adhesive layer located between the display panel and the electrically controlled dimming structure. This allows the cover plate with the electrically controlled dimming structure to be bonded to the display panel as a single unit.

[0009] According to an embodiment of the present invention, the display module further includes a heat dissipation film, the heat dissipation film including a main body portion and a bent portion connected to the main body portion; the main body portion is located on the side of the display panel away from the electronically controlled dimming structure; at least a portion of the bent portion is located on the side of the electronically controlled dimming structure away from the display panel. Thus, it can dissipate heat from the display panel, and by providing the bent portion of the heat dissipation film, it facilitates the generation of a potential on the first conductive substrate and the second conductive substrate of the electronically controlled dimming structure.

[0010] According to an embodiment of the present invention, the display module includes a display area and a non-display area, and the orthographic projection of the bent portion on the display panel is located in the non-display area. That is, the bent portion does not affect the normal display of the display module.

[0011] According to an embodiment of the present invention, the display module further includes a second adhesive layer and a flexible circuit board; the second adhesive layer is located on the side of the main body of the heat dissipation film away from the cover plate; at least a portion of the flexible circuit board is located on the side of the second adhesive layer away from the heat dissipation film; the second adhesive layer has through holes, and conductive adhesive is disposed in the through holes; the heat dissipation film is electrically connected to the electrically controlled dimming structure. Thus, the flexible circuit board can be electrically connected to the electrically controlled dimming structure, causing the first conductive substrate and the second conductive substrate of the electrically controlled dimming structure to generate a potential.

[0012] According to an embodiment of the present invention, the display panel includes a light-emitting device layer and a color filter layer, the color filter layer being located on the side of the light-emitting device layer near the cover plate, and the light-emitting device layer and the color filter layer at least covering the display area. Thus, the display panel can have a display function. Furthermore, the display module of this application has a COE structure.

[0013] According to an embodiment of the present invention, one end of the flexible circuit board is connected to the display panel, and the other end of the flexible circuit board is bent to the side of the display panel away from the electrically controlled dimming structure. This reduces the bezel size of the display module, thereby reducing the overall size of the display module.

[0014] According to an embodiment of the present invention, there is no overlap between the orthographic projection of the bent portion of the flexible circuit board on the display panel and the orthographic projection of the bent portion of the heat dissipation film on the display panel. Therefore, the structures of the flexible circuit board and the heat dissipation film do not interfere with each other.

[0015] This invention also provides a method for manufacturing a display module, the method comprising: providing a display panel; forming an electrically controlled dimming structure on one side of the display panel, the electrically controlled dimming structure being configured to be opaque when the display panel is not emitting light and translucent when the display panel is emitting light; and forming a cover plate on the side of the electrically controlled dimming structure away from the display panel. Thus, when the display module prepared by this method is in a black screen state, the electrically controlled dimming structure is opaque, which can effectively absorb and refract incident light from the outside and reflected light from the cathode, preventing external light from reaching the cathode layer, and effectively improving the problem of poor overall black effect of the display module in a black screen state.

[0016] The present invention also provides a display device comprising the display module described above. Therefore, this display device possesses all the features and advantages of the display module described above, which will not be repeated here. In summary, when the display device is in a black screen state, it exhibits a better seamless black effect, effectively improving the problem of poor seamless black effect in a black screen state. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the display module in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the display module in another embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the electrically controlled dimming structure when it is not powered on, according to one embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the electrically controlled dimming structure when energized in one embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the display module in another embodiment of the present invention;

[0022] Figure 6 This is a top view of the display module in one embodiment of the present invention;

[0023] Figure 7 yes Figure 6 Cross-sectional view at position B-B';

[0024] Figure 8 This is a schematic diagram of the structure of the display module in another embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram of the structure of the display module in another embodiment of the present invention;

[0026] Figure 10 yes Figure 6 Cross-sectional view at position C-C';

[0027] Figure 11 This is a flowchart of a method for preparing a display module in one embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures

[0029] 1000 - Display module, 100 - Display panel, 110 - Light-emitting device layer, 120 - Color filter layer, 200 - Electrically controlled dimming structure, 210 - First conductive substrate, 220 - Dimming layer, 230 - Second conductive substrate, 300 - Cover plate, 400 - First adhesive layer, 500 - Heat dissipation film, 510 - Main body, 520 - Bending part, AA - Display area, NA - Non-display area, 600 - Second adhesive layer, 700 - Flexible circuit board, 700a - Bending part of flexible circuit board, 800 - Conductive adhesive. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below. These embodiments are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they are performed according to the techniques or conditions described in the literature in the art or according to the product instructions. Reagents used, unless otherwise specified, are all commercially available conventional products.

[0031] This invention provides a display module, reference Figure 1The display module 1000 includes a display panel 100, an electrically controlled dimming structure 200, and a cover plate 300. The electrically controlled dimming structure 200 is located on one side of the display panel 100 and is configured to be opaque when the display panel 100 is not emitting light and transparent when the display panel 100 is emitting light. The cover plate 300 is located on the side of the electrically controlled dimming structure 200 away from the display panel 100. Therefore, when the display panel 100 is emitting light, the electrically controlled dimming structure 200 is transparent, not affecting the light emission of the display panel 100. When the display panel 100 is not emitting light and is in a black screen state, the electrically controlled dimming structure 200 is opaque, effectively absorbing and refracting external incident light and reflected light from the cathode, preventing external light from shining on the cathode layer, and effectively improving the problem of poor overall black levels that occurs during the use of COE products.

[0032] According to an embodiment of the present invention, reference Figure 2 The electronically controlled dimming structure 200 includes a first conductive substrate 210, a dimming layer 220, and a second conductive substrate 230 stacked together. Thus, the first conductive substrate 210 and the second conductive substrate 230 are used to apply voltage to the dimming layer 220 to control the dimming layer 220 to be in an opaque state or a transparent state.

[0033] According to some embodiments of the present invention, the materials forming the first conductive substrate 210 and the materials forming the second conductive substrate 230 can be ITO (indium tin oxide). ITO is transparent and does not affect the display effect of the dimming layer 220 and the display panel 100.

[0034] According to some embodiments of the present invention, the electronically controlled dimming structure 200 may further include a sealing adhesive, which covers the sides of the first conductive substrate 210, the dimming layer 220 and the second conductive substrate 230. The sealing adhesive and the first conductive substrate 210 and the second conductive substrate 230 form a receiving space, which can confine the dimming layer 220 within the receiving space.

[0035] Figure 3 This is a schematic diagram of the electrically controlled dimming structure 200 when it is not powered on, according to one embodiment of the present invention. Figure 3 When the display panel is powered off, the voltage between the first conductive substrate 210 and the second conductive substrate 230 in the electronically controlled dimming structure 200 disappears. The particles in the dimming layer 220 are arranged randomly due to Brownian motion. The randomly arranged particles are conducive to absorbing and refracting external incident light and the reflected light from the cathode. At this time, the electronically controlled dimming structure 200 has a low transmittance, and the display panel 100 is in a black state, which has a good overall black effect. This can improve the problem of poor overall black effect of COE products in black screen (power off) usage scenarios.

[0036] In some embodiments of the present invention, when the electronically controlled dimming structure 200 is not powered on, the transmittance of the electronically controlled dimming structure 200 is 2%-3%. That is, when the display panel 100 is in a black screen state, the electronically controlled dimming structure 200 can effectively absorb and refract external incident light and the reflected light from the cathode, and can effectively prevent external light from shining on the cathode layer, thus having a good integrated black effect.

[0037] Figure 4 This is a schematic diagram of the electrically controlled dimming structure 200 when energized in one embodiment of the present invention, for reference. Figure 4 When the display panel is powered on normally, the particles in the dimming layer 220 are arranged in an orderly manner due to the potential difference between the first conductive substrate 210 and the second conductive substrate 230 in the electronic dimming structure 200. At this time, the electronic dimming structure 200 has a high transmittance and is in a light-transmitting state, which is conducive to the light emitted by the display panel 100 being emitted. The display panel 100 displays normally, which can enable the display module 1000 to be used normally.

[0038] According to some embodiments of the present invention, the transmittance of the electrically controlled dimming structure 200 under energized conditions is 65%, while the typical transmittance of a polarizer is 45%. This means that during normal operation of the display module, the higher transmittance of the electrically controlled dimming structure 200 results in less light loss when passing through it compared to when passing through a polarizer. In other words, compared to display modules that require a polarizer, the solution of this application can reduce the power consumption of the display module and also facilitate pixel-level image processing on the display panel.

[0039] According to an embodiment of the present invention, the material forming the dimming layer 220 includes polymer-dispersed liquid crystal (PDLC). Therefore, by controlling the voltage between the first conductive substrate 210 and the second conductive substrate 230, the dimming layer 220 can be made to be either transparent or opaque.

[0040] Furthermore, polymer-dispersed liquid crystals include, but are not limited to, polymer-dispersed liquid crystals having a thiol-isocyanate-olefin ternary network. Specifically, polyethylene glycol diacrylate (PEGDA) can be reacted with the thiol monomer trimethylolpropane tris(3-mercaptopropionic acid) ester (TMPMP), and an equal mass of the isocyanate monomer isophorone diisocyanate (IPDI) can be introduced. Using 4-dimethylaminopyridine (DMAP) as a base catalyst, a polymer-dispersed liquid crystal having a thiol-isocyanate-olefin ternary network can be synthesized.

[0041] According to an embodiment of the present invention, reference Figure 5The display module 1000 also includes a first adhesive layer 400, which is located between the display panel 100 and the electronically controlled dimming structure 200. Thus, the cover plate 300 with the electronically controlled dimming structure 200 can be bonded to the display panel 100 to form an integral structure through the first adhesive layer 400.

[0042] According to some embodiments of the present invention, the first adhesive layer 400 may be an OCA optical adhesive (Optically Clear Adhesive).

[0043] This invention does not limit the shape and size of the display module 1000. For example, the shape of the display module 1000 can be rectangular, rounded rectangle, circular, elliptical, or irregular. Those skilled in the art can select the shape and size of the display module 1000 according to specific requirements.

[0044] Figure 6 This is a top view of the display module 1000 in one embodiment of the present invention. Figure 7 yes Figure 6 Cross-sectional view at position B-B'.

[0045] According to an embodiment of the present invention, reference Figure 7 The display module 1000 also includes a heat dissipation film 500, which includes a main body 510 and a bent portion 520 connected to the main body 510. The main body 510 is located on the side of the display panel 100 away from the electronically controlled dimming structure 200. At least a portion of the bent portion 520 is located on the side of the electronically controlled dimming structure 200 away from the display panel 100. Thus, the heat dissipation film 500 can buffer and dissipate heat for the display panel 100. Moreover, a portion of the heat dissipation film 500 is bent toward the light-emitting surface of the display panel 100, and the included bent portion 520 facilitates electrical connection between the heat dissipation film 500 and the electronically controlled dimming structure 200 via wiring or the like.

[0046] According to an embodiment of the present invention, reference Figure 6 and Figure 7 The display module 1000 includes a display area AA and a non-display area NA. The orthographic projection of the bent portion 520 on the display panel 100 is located in the non-display area NA. That is, the heat dissipation film 500 bent to the light-emitting surface side of the display panel 100 is located in the non-display area NA, and the bent portion 520 will not affect the normal display of the display module 1000.

[0047] According to some embodiments of the present invention, the electronically controlled dimming structure 200 covers at least the display area AA.

[0048] According to an embodiment of the present invention, reference Figure 8The display module 1000 also includes a second adhesive layer 600 and a flexible circuit board 700; the second adhesive layer 600 is located on the side of the main body 510 of the heat dissipation film 500 away from the cover plate 300; at least a portion of the flexible circuit board 700 is located on the side of the second adhesive layer 600 away from the heat dissipation film 500; the second adhesive layer 600 is provided with through holes, and conductive adhesive 800 is provided in the through holes; thereby, the flexible circuit board 700 can be electrically connected to the heat dissipation film 500 through the conductive adhesive 800.

[0049] According to an embodiment of the present invention, the heat dissipation film 500 is electrically connected to the electrically controlled dimming structure 200. Thus, the charge on the heat dissipation film 500 can be conducted to the electrically controlled dimming structure 200, and the flexible circuit board 700 is electrically connected to the heat dissipation film 500, thereby conducting the potential on the flexible circuit board 700 to the electrically controlled dimming structure 200.

[0050] According to some embodiments of the present invention, the heat dissipation film 500 is electrically connected to the first conductive substrate 210 and the second conductive substrate 230, respectively. This allows the first conductive substrate 210 and the second conductive substrate 230 to possess an electrical potential.

[0051] According to some embodiments of the present invention, ELVDD and ELVSS on the flexible circuit board 700 can be connected to the first conductive substrate 210 and the second conductive substrate 230 respectively. ELVDD is generally connected to a positive voltage and ELVSS is generally connected to a negative voltage, thereby enabling the first conductive substrate 210 and the second conductive substrate 230 to have opposite potentials.

[0052] It should be noted that, Figure 7 and Figure 8 This is only to illustrate the relative positional relationship between the cover plate 300, the electronically controlled dimming structure 200, and the heat dissipation film 500. Figure 7 and Figure 8 Other structures may also exist between the middle cover plate 300 and the electronically controlled dimming structure 200. For example, the display module 1000 may also include a first planarization layer and a second planarization layer (not shown in the figure), see reference. Figure 7 and Figure 8The first planarization layer can be located on the side of the electrically controlled dimming structure 200 away from the display panel 100, and the second planarization layer is located on the side of the first planarization layer away from the electrically controlled dimming structure 200. At least a portion of the bent portion 520 of the heat dissipation film 500 can be located between the first planarization layer and the second planarization layer. Therefore, during the fabrication of the display module 1000, after forming the electrically controlled dimming structure 200, the first planarization layer can be formed on one side of the electrically controlled dimming structure 200. Then, the heat dissipation film 500 is bent toward the light-emitting surface of the display panel 100, so that at least a portion of the bent portion 520 of the heat dissipation film 500 is located above the first planarization layer. Subsequently, the second planarization layer is formed, covering the first planarization layer and at least a portion of the bent portion 520 of the heat dissipation film 500. Finally, a cover plate 300 is formed on the side of the second planarization layer away from the first planarization layer. Furthermore, at least one through-hole can be provided in the first planarization layer, and a trace or conductive adhesive can be provided in the through-hole to electrically connect the heat dissipation film 500 to the first conductive substrate 210 and the second conductive substrate 230, respectively.

[0053] According to an embodiment of the present invention, reference Figure 9 The display panel 100 includes a light-emitting device layer 110 and a color filter layer 120. The color filter layer 120 is located on the side of the light-emitting device layer 110 near the cover plate 300. The light-emitting device layer 110 and the color filter layer 120 at least cover the display area AA. The display panel 100 of this application includes a color filter layer 120, meaning that the display module 1000 of this application has a COE structure. Therefore, it is not necessary to add a polarizer to the display module, which can reduce the power consumption of the display module. Since the display panel 100 includes a light-emitting device layer 110 and a color filter layer 120, the display panel 100 can thus have a display function.

[0054] According to some embodiments of the present invention, the display panel 100 further includes an encapsulation layer for encapsulating light-emitting devices, the encapsulation layer being located between the light-emitting device layer 110 and the color filter layer 120.

[0055] According to some embodiments of the present invention, the light-emitting device layer 110 includes an anode, a cathode, and a light-emitting layer located between the anode and the cathode. The cathode is located between the light-emitting layer and the color filter layer 120. In other embodiments of the present invention, the light-emitting device may further include at least one of a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer, thereby further improving the performance of the light-emitting device layer 110.

[0056] According to an embodiment of the present invention, reference Figure 10One end of the flexible circuit board 700 is connected to the display panel 100, and the other end of the flexible circuit board 700 is bent to the side of the display panel 100 away from the electronically controlled dimming structure 200. Thus, by bending a portion of the flexible circuit board 700 to the backlight surface of the display panel 100, the area of ​​the non-display area NA can be reduced, that is, the bezel size of the display module 1000 can be reduced, thereby reducing the size of the display module 1000.

[0057] According to an embodiment of the present invention, reference Figure 6 , Figure 7 and Figure 10 There is no overlap between the orthographic projection of the bent portion 700a of the flexible circuit board on the display panel 100 and the orthographic projection of the bent portion 520 of the heat dissipation film 500 on the display panel 100. The heat dissipation film 500 is bent towards the light-emitting surface of the display panel 100 to form the bent portion 520 of the heat dissipation film 500, and the flexible circuit board 700 is bent towards the backlight surface of the display panel 100 to form the bent portion 700a of the flexible circuit board. The bending direction of the heat dissipation film 500 is different from that of the flexible circuit board 700. There is no overlap between the orthographic projection of the bent portion 700a of the flexible circuit board on the display panel 100 and the orthographic projection of the bent portion 520 of the heat dissipation film 500 on the display panel 100, which ensures that the structures of the heat dissipation film 500 and the flexible circuit board 700 do not affect each other.

[0058] According to some embodiments of the present invention, reference Figure 6 The bent portions 520 of the heat dissipation film 500 are located only at the left and right edges of the display module 1000. At the bottom edge of the display module 1000, the flexible circuit board 700 is bent towards the backlight surface of the display panel 100. This ensures that the structures of the heat dissipation film 500 and the flexible circuit board 700 do not interfere with each other.

[0059] In addition to the structure described above, the display module 1000 may also include the structures and components that a conventional display module 1000 must have, such as a bending spacer and a driver chip, which will not be described in detail here.

[0060] This invention also provides a method for manufacturing a display module, see reference. Figure 11 The method includes:

[0061] S100, provides a display panel;

[0062] In this step, a display panel is provided. In some embodiments of the present invention, the display panel here has all the features of the display panel 100 described above. For example, the display panel 100 includes a light-emitting device layer 110 and a color filter layer 120, that is, the display module of this application has a COE structure.

[0063] S200, An electrically controlled dimming structure is formed on one side of the display panel, the electrically controlled dimming structure being configured to be opaque when the display panel is not emitting light and transparent when the display panel is emitting light;

[0064] In this step, an electrically controlled dimming structure is formed on one side of the display panel. In some embodiments of the present invention, the electrically controlled dimming structure here has all the features of the electrically controlled dimming structure 200 described above. For example, the electrically controlled dimming structure 200 includes a first conductive substrate 210, a dimming layer 220, and a second conductive substrate 230 stacked together.

[0065] According to some embodiments of the present invention, the electrically controlled dimming structure 200 can be prepared by vapor deposition or coating.

[0066] S300, a cover plate is formed on the side of the electronically controlled dimming structure away from the display panel.

[0067] In this step, a cover plate is formed on the side of the electronically controlled dimming structure away from the display panel. The cover plate protects the internal structure of the display module.

[0068] In summary, the display module prepared by this method, when in a black screen state, exhibits an opaque electronic dimming structure that effectively absorbs and refracts incident light and reflected light from the cathode. This prevents external light from reaching the cathode layer, resulting in a superior overall black effect and improving the poor overall black effect that often occurs with COE products during use. Furthermore, this method is simple to operate.

[0069] In some embodiments of the present invention, the display module prepared by the method has the same structure as the display module 1000 described above. Therefore, the method has all the features and advantages of the display module 1000 described above, which will not be repeated here.

[0070] The present invention also provides a display device, which includes the display module 1000 described above. Therefore, this display device possesses all the features and advantages of the display module 1000 described above, which will not be repeated here. In general, when the display device is in a black screen state, it has a better seamless black effect, effectively improving the problem of poor seamless black effect in a black screen state.

[0071] The specific type of display device in this invention is not particularly limited. For example, a display device can be a product with image (including static images or dynamic images, where dynamic images can be video) display capabilities. For instance, a display device can be any of the following: monitor, television set, billboard, digital photo frame, laser printer with display function, telephone, mobile phone, drawing screen, personal digital assistant (PDA), digital camera, portable camcorder, viewfinder, navigator, vehicle, large-area wall, information query equipment (such as business query equipment for e-government, banks, hospitals, power companies, etc.), monitor, etc. Furthermore, a display device can also be any of the following: microdisplay, VR device or AR device containing a microdisplay, etc.

[0072] It should be noted that in this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, it should be understood that terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper," "lower," "left," "right," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limiting the invention.

[0073] In the description of this specification, the references to terms such as "one embodiment," "another embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A display module, characterized by The display module comprises: a display panel comprising a light-emitting device layer and a color film layer, the color film layer being located on a side of the light-emitting device layer close to a cover plate, the light-emitting device layer and the color film layer covering at least a display area; an electrically-controlled light-adjusting structure located on a side of the display panel, the electrically-controlled light-adjusting structure being configured to be in a non-transparent state when the display panel does not emit light and in a transparent state when the display panel emits light; a cover plate located on a side of the electrically-controlled light-adjusting structure away from the display panel; the display module further comprises a heat dissipation film, the heat dissipation film comprising a main body portion and a bending portion connected to the main body portion; the main body portion is located on a side of the display panel away from the electrically-controlled light-adjusting structure; at least part of the bending portion is located on a side of the electrically-controlled light-adjusting structure away from the display panel; the heat dissipation film is electrically connected to the electrically-controlled light-adjusting structure; the display module comprises a first flat layer and a second flat layer, the first flat layer being located on a side of the electrically-controlled light-adjusting structure away from the display panel, the second flat layer being located on a side of the first flat layer away from the electrically-controlled light-adjusting structure, and at least part of the bending portion of the heat dissipation film being located between the first flat layer and the second flat layer.

2. The display module of claim 1, wherein, The electrically-controlled light-adjusting structure comprises a first conductive substrate, a light-adjusting layer and a second conductive substrate which are stacked.

3. The display module of claim 2, wherein, The material forming the light-adjusting layer comprises a polymer dispersed liquid crystal.

4. The display module of claim 1, wherein, The display module further comprises a first adhesive layer located between the display panel and the electrically-controlled light-adjusting structure.

5. The display module of claim 1, wherein, The display module comprises a display area and a non-display area, and a normal projection of the bending portion on the display panel is located in the non-display area.

6. The display module of claim 1, wherein, The display module further comprises a second adhesive layer and a flexible circuit board; the second adhesive layer is located on a side of the main body portion of the heat dissipation film away from the cover plate; at least part of the flexible circuit board is located on a side of the second adhesive layer away from the heat dissipation film; a through hole is provided on the second adhesive layer, and conductive adhesive is provided in the through hole.

7. The display module of claim 6, wherein, One end of the flexible circuit board is connected to the display panel, and the other end of the flexible circuit board is bent to a side of the display panel away from the electrically-controlled light-adjusting structure.

8. The display module of claim 7, wherein, A normal projection of the bent portion of the flexible circuit board on the display panel does not overlap with a normal projection of the bent portion of the heat dissipation film on the display panel.

9. A method of manufacturing a display module, characterized by, The method comprises: providing a display panel comprising a light-emitting device layer and a color film layer, the color film layer being located on a side of the light-emitting device layer close to a cover plate, the light-emitting device layer and the color film layer covering at least a display area; forming an electrically-controlled light-adjusting structure on a side of the display panel, the electrically-controlled light-adjusting structure being configured to be in a non-transparent state when the display panel does not emit light and in a transparent state when the display panel emits light; forming a cover plate on a side of the electrically-controlled light-adjusting structure away from the display panel; the display module further comprises a heat dissipation film, the heat dissipation film comprising a main body portion and a bending portion connected to the main body portion; the main body portion is located on a side of the display panel away from the electrically-controlled light-adjusting structure; At least part of the bending portion is located on a side of the electrically-controlled light-adjusting structure away from the display panel. The heat-dissipating film is electrically connected with the electrically-controlled light-adjusting structure. The display module comprises a first flat layer and a second flat layer, the first flat layer is located on a side of the electrically-controlled light-adjusting structure away from the display panel, the second flat layer is located on a side of the first flat layer away from the electrically-controlled light-adjusting structure, and at least part of the bending portion of the heat-dissipating film is located between the first flat layer and the second flat layer.

10. A display device, characterized by comprising: The display device comprises the display module according to any one of claims 1-8.

Images