Display module and display screen

Abstract

The utility model provides a display module and a display screen, and relates to the field of display. The display module comprises an upper polaroid, a color film panel, a display circuit panel and a lower polaroid which are arranged in a stacked mode. On the side, connected with the electric connecting piece, of the display circuit panel, the edge of the color film panel is inwards shrunk to the edge of the display circuit panel, and the edge of the upper polaroid is inwards shrunk to the edge of the color film panel; a first filler is contained between the edge of the color film panel and the edge of the display circuit panel, a second filler is contained between the edge of the upper polaroid and the edge of the first filler, and the color of the second filler is the same as that of the display module under the condition that the display module is not lightened. According to the technical scheme, the display screen without frames on the four sides can be achieved, the display performance of the display screen is improved, and the appearance is optimized.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to display modules and displays. Background Technology

[0002] With the continuous advancement of display technology and consumers' pursuit of superior visual experiences, the four-sided borderless design of Liquid Crystal Displays (LCDs) has become a popular trend in the industry. LCDs with a four-sided borderless design eliminate the constraints of traditional bezels, allowing for a larger display area and a wider field of view, greatly enhancing the user's visual experience and the aesthetics of the device. Currently, most four-sided borderless LCDs have a structure with the thin-film transistor (TFT) glass panel facing upwards. This structure suffers from several reliability issues, such as yellowing and metallic layer reflections, which affect the display performance of the four-sided borderless LCD.

[0003] Therefore, improving the display performance and optimizing the appearance of frameless LCDs is a technical problem that urgently needs to be solved. Utility Model Content

[0004] This application provides a display module and a display screen, which facilitates the realization of a four-sided borderless display screen, and improves the display performance and optimizes the appearance of the display screen.

[0005] In a first aspect, a display module is provided, comprising: an upper polarizer, a color filter panel, a display circuit panel, and a lower polarizer stacked together; on the side where the display circuit panel is connected to an electrical connector, the edge of the color filter panel is recessed within the edge of the display circuit panel, and the edge of the upper polarizer is recessed within the edge of the color filter panel; a first filler is provided between the edge of the color filter panel and the edge of the display circuit panel, and a second filler is provided between the edge of the upper polarizer and the edge of the first filler, wherein the color of the second filler is the same as the color of the display module when it is not lit.

[0006] In this embodiment, the first and second fillers effectively cover the edge where the display module connects to the electrical connector, eliminating the need for an additional frame. This facilitates a borderless design for both the display module and the surrounding screen, enhancing their aesthetic appeal and user experience. Furthermore, the second filler can be the same color as the display module when it is off, ensuring uniform color and further improving the overall appearance. Moreover, in this embodiment, the color filter panel is positioned at the top, facing the user. This avoids reliability issues caused by the display circuit panel facing upwards, thus improving the display effect of both the module and the screen.

[0007] In some possible implementations, a portion of the second filler is disposed on the surface of the color filter panel and covers the electrical connection points on the surface of the color filter panel.

[0008] Through the technical solution of this embodiment, the second filler can cover the electrical connection points on the surface of the color filter panel, thereby preventing the electrical connection points from being exposed and affecting the overall appearance of the display module, so as to further improve the aesthetics of the display module and the display screen.

[0009] In some possible implementations, the first filler includes a first adhesive layer, and the second filler includes a second adhesive layer.

[0010] In this embodiment, two layers of adhesive are used to fill the edges of the display module, which not only results in a better appearance but also makes the process easier to implement and reduces production costs.

[0011] In some possible implementations, the first adhesive layer and the second adhesive layer are made of different materials.

[0012] In this embodiment, different materials can be used to target the main functions of the first adhesive layer and the second adhesive layer. For example, the material of the second adhesive layer can be used to improve the appearance of the display module, while the material of the first adhesive layer can be a low-cost material, thereby taking into account both the manufacturing cost and appearance of the display module.

[0013] In some possible implementations, the first adhesive layer and / or the second adhesive layer comprises at least one of the following materials: crosslinking agent, colorant, thickener, and matting agent.

[0014] By adding at least one of the above-mentioned materials to the first adhesive layer and / or the second adhesive layer, the appearance of the adhesive layer can be effectively improved, thereby improving the overall appearance of the display module.

[0015] In some possible implementations, a raised surface is formed on the side of the first adhesive layer away from the upper polarizer, and / or, a raised surface is formed on the side of the second adhesive layer away from the color filter panel.

[0016] Through the technical solution of this embodiment, the raised surfaces in the first adhesive layer and / or the second adhesive layer can provide more bending space for the electrical connectors in the display module, and can also provide buffer space for the display circuit panel and the color filter panel, reducing the probability of other structural components in the display screen causing light leakage and other problems caused by squeezing the display circuit panel and the color filter panel.

[0017] In some possible implementations, the flatness of the second adhesive layer ranges from -50 μm to 50 μm compared to the plane containing the upper surface of the upper polarizer. This second adhesive layer with better flatness helps to further improve the overall appearance of the display module.

[0018] In some possible implementations, the first filler includes a magnetic element, and the second filler includes a metallic element.

[0019] In this embodiment, magnetic and metal components are used to fill the edges of the display module, which not only provides better flatness but also solves the appearance problem and facilitates the disassembly of the metal components, thereby facilitating the installation and maintenance of the display module.

[0020] In some possible implementations, a plurality of electrical connectors are connected to one side of the display circuit panel, and the first filler includes a plurality of magnetic elements, which are distributed between the plurality of electrical connectors and / or at both ends of the plurality of electrical connectors.

[0021] The technical solution of this embodiment allows the multiple magnetic components to be distributed more evenly on one side edge of the display circuit panel, improving the magnetic attraction and fixing effect with the metal components, thereby improving the reliability of the display module.

[0022] In some possible implementations, the first filler further includes an adhesive layer that covers the magnetic element.

[0023] In some possible implementations, the height of the magnetic element is less than or equal to the thickness of the color filter panel, and / or the width of the magnetic element is less than or equal to the distance from the edge of the color filter panel to the edge of the display circuit panel.

[0024] In some possible implementations, the first filler includes an adhesive layer, and the second filler includes a polyester board, the polyester board being the same color as the display module when it is not lit.

[0025] The technical solution of this embodiment utilizes polyester sheet (PET sheet) and adhesive layer to fill the edges of the display module. PET has a certain elasticity and has a rebound effect when the user presses and indents it, which helps to further improve the appearance of the display module.

[0026] In some possible implementations, the first filler includes an adhesive layer, and the second filler includes a polyester board and a light-shielding tape, wherein the color of the light-shielding tape is the same as the color of the display module when it is not lit.

[0027] In this embodiment, adjusting the color of the light-shielding tape is easier to implement and helps reduce manufacturing costs compared to adjusting the color of the polyester board. Furthermore, using the light-shielding tape can further improve the stability of the polyester board within the display module.

[0028] In some possible implementations, the display module further includes: a circuit board and a circuit board protector, the circuit board protector being disposed on the side where the display circuit panel is connected to the electrical connector; a bent portion is formed at one end of the circuit board protector near the upper polarizer, a first sub-part of the bent portion being parallel to the upper polarizer, a second sub-part of the bent portion being perpendicular to the first sub-part, and a gap being formed between the second sub-part and the display circuit panel.

[0029] In the technical solution provided by this embodiment, the circuit board protector is provided with a bending portion, which can reduce the possibility that the circuit board protector directly contacts each panel (such as the display circuit panel) in the display module, and reduce the occurrence of problems such as light leakage.

[0030] In some possible implementations, in a direction parallel to the upper polarizer, the length of the first sub-part is less than or equal to the distance between the edge of the upper polarizer and the edge of the display circuit panel.

[0031] In some possible implementations, the length of the first sub-section is between 2 mm and 3 mm in the direction parallel to the upper polarizer.

[0032] In both implementations, the impact of the first sub-part on the overall appearance of the display module can be reduced by designing the size of the first sub-part, thereby further improving the aesthetic appeal of the display module.

[0033] In some possible implementations, the second filler includes a metal component or a polyester sheet, the surface of the first sub-part is flush with the surface of the color filter panel, and the metal component or polyester sheet extends onto the surface of the first sub-part.

[0034] In this embodiment, the appearance color of the circuit board protector does not need to be considered. By extending a metal part or a polyester board onto the surface of the circuit board protector, the appearance color of the display module can be unified, which helps to further reduce the manufacturing cost of the circuit board protector and the display module.

[0035] In a second aspect, a display screen is provided, comprising: a backlight, and a display module as described in the first aspect or any possible implementation thereof. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a liquid crystal display screen provided in an embodiment of this application.

[0037] Figure 2 This is a schematic diagram of a three-sided frameless display screen with CF glass facing upwards, provided in an embodiment of this application.

[0038] Figure 3 This is a schematic plan view of a display module provided in an embodiment of this application.

[0039] Figure 4 yes Figure 3 A schematic cross-sectional view of a local area along the A-A' direction.

[0040] Figure 5 This is a schematic diagram of another display module provided in an embodiment of this application.

[0041] Figure 6 This is a schematic plan view of a display module provided in an embodiment of this application.

[0042] Figure 7 yes Figure 6 A schematic cross-sectional view of a local area along the B-B' direction.

[0043] Figure 8 This is a process flow provided in the embodiments of this application when the adhesive viscosity is less than 1000 CPS.

[0044] Figure 9 This is a schematic diagram of another display module provided in an embodiment of this application.

[0045] Figure 10 This is a schematic diagram of another display module provided in an embodiment of this application.

[0046] Figure 11 This is a schematic diagram of another display module provided in an embodiment of this application.

[0047] Figure 12 This is a schematic diagram of another display module provided in an embodiment of this application.

[0048] Figure 13 This is a schematic diagram of another display module provided in an embodiment of this application.

[0049] Figure 14 This is a schematic diagram of another display module provided in an embodiment of this application.

[0050] Figure 15 This is a schematic diagram of another display module provided in an embodiment of this application.

[0051] Figure 16 This is a schematic diagram of a display screen provided in an embodiment of this application. Detailed Implementation

[0052] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0053] This application relates to a display screen. The display screen can be applied to various fields and scenarios. As an example, the display screen can be applied to 3C electronic products in the fields of computers, communications, and consumer electronics, including but not limited to televisions, mobile phones, computers, laptops, tablets, personal digital assistants (PDAs), in-vehicle computers, wearable devices, gaming devices, and photographic equipment. This application does not limit the specific type of electronic device in which the display screen is located.

[0054] Furthermore, the display screen involved in this application can be a liquid crystal display (LCD). This LCD can be, for example, a thin film transistor (TFT) LCD, which utilizes TFTs to form the driving circuit in the LCD panel. The types of TFTs can include, for example, amorphous silicon (a-Si) TFTs, low-temperature polycrystalline silicon (LTPS) TFTs, low-temperature polycrystalline oxide (LTPO) TFTs, and indium gallium zinc oxide (IGZO) TFTs. Additionally, according to the driving type, LCDs can include twisted nematic (TN), in-plane switching (IPS), and vertical alignment (VA) types. This application does not limit the specific type of LCD.

[0055] Figure 1 A schematic diagram of a liquid crystal display screen provided in an embodiment of this application is shown.

[0056] like Figure 1As shown, the liquid crystal display screen 100 may include a first polarizer (POL) 110, a color filter (CF) glass 120, a TFT glass 140, a second polarizer 150, and a backlight 160 stacked together, wherein a liquid crystal (LC) layer 130 is sandwiched between the CF glass 120 and the TFT glass 140.

[0057] The CF glass 120 can also be called colored filter glass or colored filter panel. The CF glass 120 may include a glass substrate and a color filter 121 formed on the glass substrate. The color filter 121 forms a light-transmitting area for controlling the emitted color of the display screen. Optionally, the color filter 121 includes filters for red, green, and blue colors. In some examples, such as... Figure 1 As shown, the CF glass 120 can be distributed with a color filter array formed by multiple color filters 121, each color filter 121 corresponding to a pixel in a display screen. In addition, the non-transparent areas between the multiple color filters 121 can form a black matrix (BM) to isolate light interference between different color filters, improve the color purity and contrast of the display screen, and effectively improve problems such as pixel light leakage.

[0058] The TFT glass 140 can also be referred to as display circuit glass or display circuit panel. The TFT glass 140 may include a glass substrate and TFT pixel circuits 141 formed on the glass substrate. Alternatively, in some alternative embodiments, the pixel circuits on the glass substrate may employ other types of pixel circuits besides TFT. Figure 1 As shown, a pixel circuit array formed by multiple TFT pixel circuits 141 can be distributed on the TFT glass 140. The area where one TFT pixel circuit is located can also be called a pixel. The TFT in the TFT pixel circuit can be used to receive external control signals (such as gate drive signals and source drive signals), thereby controlling the voltage of the pixel electrode connected to the TFT and changing the electric field corresponding to the area where the pixel electrode is located. Under the action of different electric fields, the state of the liquid crystal also changes accordingly, thereby controlling the light emission effect of the pixel.

[0059] In some embodiments, the edges of the TFT glass 140 and the CF glass 120 can be sealed with materials such as sealant, so that the liquid crystal layer 130 can be reliably sealed in the space formed by the two glass layers. The entire assembly formed by the TFT glass 140, the liquid crystal layer 130, and the CF glass 120 can be referred to as a liquid crystal cell.

[0060] The first polarizer 110 and the second polarizer 150 can be located on the upper and lower sides of the liquid crystal cell, respectively, so that the transmitted light has a specific polarization direction, thereby controlling the optical effect of the liquid crystal layer. In some embodiments, the polarization directions of the first polarizer 110 and the second polarizer 150 can be perpendicular to each other.

[0061] The backlight 160 can be located on the back of the display screen 100, thereby providing a uniform illumination source for the display screen 100. The backlight 160, also referred to as a backlight module, may include multiple optical stacked structures, such as light guide plates, diffusers, and other optical films. The light source in the backlight 160 may include, for example, a light-emitting diode (LED), a miniature LED (MLED), etc.

[0062] Figure 1 The main components of the liquid crystal display screen 100 are shown only for illustrative purposes. In addition to the components shown, other components can be added to the liquid crystal display screen according to application requirements. For example, an alignment film can be coated on the side of the TFT glass 140 and CF glass 120 facing the liquid crystal layer 130. Furthermore, Figure 1 The order of the parts shown can also be adjusted according to application requirements; for example, the order can be changed to... Figure 1 The positions of the TFT glass 140 and the CF glass 120 are interchanged. This application does not limit the specific structure of the liquid crystal display screen 100.

[0063] In the display industry, to enhance the aesthetics and user experience of displays, a borderless design has gradually emerged, referring to the effect of extremely narrow or almost invisible bezels on the four sides of the display. This design makes the display appear to have virtually no visible borders, thus providing users with a wider field of view and a more immersive viewing experience.

[0064] In current designs, due to limitations in manufacturing processes and cost, displays with a four-sided frameless design typically have the TFT glass on top, meaning the TFT glass is located on the side of the CF glass facing the user. This approach leads to several reliability issues, such as yellowing of the display and glare from the metal layer. Furthermore, a CF glass-on-top design generally only allows for a three-sided frameless design; the other side needs to connect to external electrical components, requiring the frame to obscure the relevant structure and affecting the overall display appearance.

[0065] Figure 2 This illustration shows a schematic diagram of a three-sided frameless display screen with CF glass facing upwards, provided in an embodiment of this application.

[0066] like Figure 2As shown, in this display screen 200, the upper polarizer 210, CF glass 220, TFT glass 230, and lower polarizer 240 are stacked sequentially to form a panel module. As an example, Figure 2 The backlight in the display screen 200 shown may include: an LED light panel 251, an optical film layer 252, a light guide plate 253, a reflector 254, and a back plate 255. The optical film layer 252 may include multiple layers, such as a diffuser or a brightness enhancement prism. The backlight and the panel module can be interconnected via connectors, which may include, for example, the foam tape 261, the frame 262, and the silicone pad 263 shown in the figure.

[0067] One side of the TFT glass 230 may be connected to an electrical connector, such as a chip-on-film (COF) 272 as shown in the figure. The TFT glass 230 can be connected to a circuit board 280 through the COF 272. The circuit board 280 may include, for example, a printed circuit board (PCB). In addition, a chip 271 may be bonded to the COF 272. The chip 271 can provide control signals related to the display screen.

[0068] To protect the circuit board 280, the display screen 200 may also include a circuit board cover 290. In addition to protecting the circuit board 280, the circuit board cover 290 can be used to reduce or prevent electromagnetic interference (EMI) between the circuit board 280 and other electrical components. Furthermore, the circuit board cover 290 can cover the side of the display screen where it connects to the COF 272 to protect the COF 272 and related electronic components in the associated electrical connections.

[0069] exist Figure 2 In the example shown, a gap 201 is left between the CF glass 220 and the circuit board protection component 290. This gap 201 needs to be covered by related structural components (such as the mid-frame) of the electronic device where the display screen is located, forming the bezel of the display screen 200 on that side. Therefore, the display screen 200 provided in this embodiment can only achieve a three-sided bezel-less design, which affects the aesthetic appearance of the display screen 200 and also affects the user's experience.

[0070] In view of this, the following embodiments provide a display module that can improve the display performance of a four-sided borderless LCD and optimize its appearance, which is conducive to realizing the four-sided borderless design of the display screen.

[0071] Figure 3 and Figure 4A schematic diagram of a display module provided in an embodiment of this application is shown. Figure 3 This is a schematic plan view of the module. Figure 4 for Figure 3 A schematic cross-sectional view of a local area along the A-A' direction.

[0072] like Figure 3 and Figure 4 As shown, the display module 300 includes: an upper polarizer 310, a color filter panel 320, a display circuit panel 330, and a lower polarizer 340 stacked together. On the side of the display circuit panel 330 connected to the electrical connector 350, the edge of the color filter panel 320 is recessed within the edge of the display circuit panel 330, and the edge of the upper polarizer 310 is also recessed within the edge of the color filter panel 320. A first filler 360 is accommodated between the edge of the color filter panel 320 and the edge of the display circuit panel 330, and a second filler 370 is accommodated between the edge of the upper polarizer 310 and the edge of the first filler 360. The color of the second filler 370 is the same as the color of the display module 300 when it is not illuminated.

[0073] In this embodiment, the upper polarizer 310 is the polarizer facing the user side in the display module 300, and the lower polarizer 340 is the polarizer facing the interior of the electronic device in the display module 300. To distinguish the positions of the two polarizers in the display module 300, they are referred to as the upper polarizer and the lower polarizer in this application. Optionally, the two polarizers can be respectively... Figure 1 The illustrated embodiment shows a first polarizer 110 and a second polarizer 150. Optionally, the polarization directions of the two polarizers can be perpendicular to each other.

[0074] In the display module 300, the color filter panel 320 is positioned close to the upper polarizer 310, meaning that the display module 300 is a module with the color filter panel 320 facing upwards. The relevant structure of the color filter panel 320 can be found above. Figure 1 The following is a description of the CF glass 120 in the illustrated embodiment. In the display module 300, the color filter panel 320 is positioned upwards, which avoids many reliability issues caused by the TFT glass facing upwards and improves the display effect of the display module 300.

[0075] Furthermore, in the display module 300, the display circuit panel 330 is located below the color filter panel 320, and this display circuit panel 330 is positioned close to the lower polarizer 340. The relevant structure of this display circuit panel 330 can be found above. Figure 1 The TFT glass in the illustrated embodiment is described in detail below. See also... Figure 3 and Figure 4As shown, one edge of the display circuit panel 330 can be connected to an electrical connector 350, which may include, for example, a flexible printed circuit (FPC), a COF, or other types of electrical connection devices.

[0076] exist Figure 3 and Figure 4 In the illustrated embodiment, on the side of the display circuit panel 330 connected to the electrical connector 350, the edge of the color filter panel 320 is recessed within the edge of the display circuit panel 330, and the edge of the upper polarizer 310 is also recessed within the edge of the color filter panel 320. The display circuit panel 330 forms a first stepped surface on its upper edge and the side surface of the color filter panel 320, and a first filler 360 is provided on the upper edge of the display circuit panel 330. Optionally, the height of the first filler 360 can be close to the thickness of the color filter panel 320. For example, the height of the first filler 360 can be equal to, slightly lower than, or slightly higher than the thickness of the color filter panel 320. The color filter panel 320 may form a second stepped surface on the upper surface of its edge, the upper surface of the first filler 360, and the side surface of the upper polarizer 310. The color filter panel 320 may also have a second filler 370 on the upper surface of its edge and the upper surface of the first filler 360. Optionally, the height of the second filler 370 may be close to the thickness of the upper polarizer 310. For example, the height of the second filler 370 may be equal to, slightly lower than, or slightly higher than the thickness of the upper polarizer 310.

[0077] In this embodiment, the first filler 360 and the second filler 370 can effectively cover the edge where the display module 300 connects to the electrical connector 350, thus eliminating the need for an additional frame. This facilitates the implementation of a frameless design for the display module and the surrounding screen, enhancing their aesthetic appeal and user experience. Furthermore, the color of the second filler 370 can be the same as the display module 300 when it is not illuminated, ensuring uniform color across the display module 300 when it is off, further improving its appearance. Moreover, in the display module provided in this embodiment, the color filter panel 320 is positioned at the top, facing the user. This avoids various reliability issues caused by the display circuit panel 330 facing upwards, thereby improving the display effect of the display module and the screen.

[0078] Alternatively, in some implementations, such as Figure 3 and Figure 4As shown, the surface of the color filter panel 320 may be provided with an electrical connection point 321. This electrical connection point 321 can be used to connect to external signal traces to transmit a common voltage signal to the color filter panel 320 and provide it to a common electrode disposed in the color filter panel. Optionally, the electrical connection point 321 can be used to connect to ground. In some embodiments, the electrical connection point 321 includes, but is not limited to, a silver paste dot.

[0079] A portion of the second filler 370 may be disposed on the surface of the color filter panel 320 and cover the electrical connection point 321 on the surface of the color filter panel 320, thereby preventing the electrical connection point 321 from being exposed and affecting the overall appearance of the display module 300, so as to further improve the aesthetics of the display module 300 and the display screen.

[0080] This application provides various implementation methods for the first filler 360 and the second filler 370, which will be described below with reference to specific embodiments.

[0081]

Example 1

[0082] In the embodiments of this application, both the first filler and the second filler can be adhesive layers. For ease of distinction, the two adhesive layers will be referred to below as the first adhesive layer and the second adhesive layer.

[0083] Figure 5 A schematic diagram of another display module provided in an embodiment of this application is shown.

[0084] like Figure 5 As shown, the display module 500 includes: an upper polarizer 510, a color filter panel 520, a display circuit panel 530, and a lower polarizer 540 stacked together. On the side of the display circuit panel 530 connected to the electrical connector 550, the edge of the color filter panel 520 is recessed within the edge of the display circuit panel 530, and a first adhesive layer 560 is accommodated between the edge of the color filter panel 520 and the edge of the display circuit panel 530. The edge of the upper polarizer 510 is recessed within the edge of the color filter panel 520, and a second adhesive layer 570 is accommodated between the edge of the upper polarizer 510 and the edge of the first adhesive layer 560. The color of the second adhesive layer 570 can be the same as the color of the display module 500 when it is not illuminated.

[0085] Optionally, the color filter panel 520 is provided with an electrical connection point 521, and the second adhesive layer 570 can cover the electrical connection point 521.

[0086] Optionally, the materials of the first adhesive layer 560 and the second adhesive layer 570 may be the same or different.

[0087] In some examples, the first adhesive layer 560 and the second adhesive layer 570 can both be ultraviolet (UV) curing adhesives, or simply UV adhesives.

[0088] In other examples, at least one of the first adhesive layer 560 and the second adhesive layer 570 may have additional additives added to the base adhesive (e.g., UV adhesive). For example, the first adhesive layer 560 and / or the second adhesive layer 570 may have at least one additional material added to the base adhesive, such as a crosslinking agent, colorant, thickener, and matting agent.

[0089] The cross-linking agent, also known as a "crosslinking agent," "curing agent," or "hardener," can include organic peroxides such as dicumyl peroxide (DCP), benzoyl peroxide (BPO), di-tert-butyl peroxide (DTBP), and dicumyl hydroperoxide (DBHP). Adding this cross-linking agent to the adhesive layer improves its water-repellent properties, thus providing better protection for the electrical connector 550 connected to the display module.

[0090] Color paste can be used to adjust the color of the adhesive layer. Optionally, the color paste can be added only to the second adhesive layer 570 and not to the first adhesive layer 560, thereby reducing the manufacturing cost of the adhesive layer and the display module it is located in. By adding color paste, the color of the adhesive layer can be adjusted to match the color of the unlit display module, improving the overall appearance of the display module.

[0091] Thickeners are substances that increase the viscosity of liquids. By adding thickeners to the adhesive layer, the viscosity of the adhesive layer can be increased, thereby improving the stability of the adhesive layer in the display module after curing, reducing the possibility of the adhesive layer peeling off after curing, and thus improving the reliability of the display module.

[0092] A matting agent is a substance that achieves a matting effect. This matting agent can be a matting powder. Optionally, the matting agent can be added only to the second adhesive layer 570 and not to the first adhesive layer 560, thereby reducing the manufacturing cost of the adhesive layer and the display module. Adding a matting agent to the adhesive layer can adjust the haze of the adhesive layer surface, making the haze of the adhesive layer surface consistent with the surface haze of the upper polarizer 510, further improving the overall appearance of the display module.

[0093] The embodiments of this application do not limit the specific materials of the crosslinking agent, color paste, thickener and matting powder mentioned above.

[0094] Optionally, the second adhesive layer 570 may have better flatness. For example, compared to the upper surface of the upper polarizer 510, the flatness of the second adhesive layer 570 ranges from -50μm to 50μm. The flatness of the second adhesive layer 570 can be the deviation between the measured surface height of the second adhesive layer 570 and the ideal plane (the plane containing the upper surface of the upper polarizer 510). The second adhesive layer 570 with better flatness is beneficial to further improving the overall appearance of the display module.

[0095] In some implementations, such as Figure 5 As shown, a raised surface is formed on the side of the first adhesive layer 560 away from the upper polarizer 510, and / or a raised surface can be formed on the side of the second adhesive layer 570 away from the secondary color filter panel 520. During the process of applying and curing the adhesive to form the adhesive layer, a raised surface can be formed on the side of the adhesive layer due to the tension of the adhesive. This raised surface can provide more bending space for the electrical connector 550, and can also provide buffer space for the display circuit panel 530 and the color filter panel 520, reducing the probability of other structural components in the display screen causing light leakage or other problems due to pressure on the display circuit panel 530 and the color filter panel 520.

[0096] Optionally, during the manufacturing process, the first adhesive layer 560 and the second adhesive layer 570 can be coated separately. Figure 6 and Figure 7 Another schematic diagram of the display module provided in an embodiment of this application is shown. Wherein, Figure 6 This is a schematic plan view of the module. Figure 7 for Figure 6 A schematic cross-sectional view of a local area along the B-B' direction. Additionally, Figure 6 and Figure 7 The diagram also shows the relevant dimensions of the upper polarizer 510, color filter panel 520, display circuit panel 530, and lower polarizer 540 in the display module 500 provided in the embodiments of this application.

[0097] like Figure 6 and Figure 7 As shown, the side length of the display circuit panel 530 connected to the electrical connector (not shown) can be L. On the side of the display circuit panel 530 connected to the electrical connector, the distance between the edge of the color filter panel 520 and the edge of the display circuit panel 530 can be W1, and the distance between the edge of the upper polarizer 510 and the edge of the display circuit panel 530 can be W2. The thickness (or height) of the upper polarizer 510 is H1, and the thickness (or height) of the color filter panel 520 can be H2.

[0098] For display modules with the above dimensions, the adhesive application process should be carried out according to the following logic.

[0099] 1. Use the first layer of adhesive to fill the gap between the color filter panel 520 and the display circuit panel 530. Calculate the required coating height before the adhesive cures based on the adhesive shrinkage rate. The calculation formula is: H3 = H2 / (1 - A%), where H3 is the coating height of the first layer of adhesive, and A% is the curing shrinkage rate of the first layer of adhesive. Although H3 will be slightly greater than H2, due to the surface tension of the adhesive, it will not flow onto the upper polarizer 510 when slightly higher.

[0100] 2. Curing the first layer of adhesive, which forms the first adhesive layer 560 after curing.

[0101] 3. Use the second layer of adhesive to fill the gap between the upper polarizer 510 and the color filter panel 520. Calculate the required coating height before the adhesive cures based on the adhesive shrinkage rate. The calculation formula is: H4 = H1 / (1 - B%), where H4 is the coating height of the second layer of adhesive and B% is the curing shrinkage rate of the second layer of adhesive.

[0102] 4. Curing the second layer of adhesive, which forms the second adhesive layer 570 after curing.

[0103] Optionally, the thickness of the first adhesive layer 560 formed by curing can be close to or equal to the thickness H2 of the color filter panel 520. The thickness of the second adhesive layer 570 formed by curing can be close to or equal to the thickness H1 of the upper polarizer 510.

[0104] In the adhesive application process, in addition to considering the curing shrinkage rate, the viscosity of the adhesive should also be taken into account. Lower viscosity results in better flowability, and a viscosity closer to a paste-like consistency. When the adhesive viscosity is less than 1000 CPS, piezoelectric valve spraying can be used, with edge damming to prevent the adhesive from flowing and collapsing at the edges. When the adhesive viscosity is between 1000 CPS and 20000 CPS, piezoelectric valve spraying, pneumatic needle valve scraping, and screw needle valve scraping can all be used. When the adhesive viscosity is greater than 20000 CPS, pneumatic needle valve or screw needle valve scraping can be used.

[0105] Figure 8 The present application provides a process flow for an adhesive viscosity of less than 1000 CPS.

[0106] like Figure 8 As shown in (a), a dam is set at the edge of the display circuit panel 530 using a high-viscosity adhesive (e.g., with a viscosity greater than 20,000 CPS). This dam can also be understood as a barrier, used to block the subsequent application of low-viscosity adhesive at the edge of the display circuit panel 530 and limit the flow area of ​​the low-viscosity adhesive.

[0107] like Figure 8As shown in (b), a first layer of adhesive is applied between the dam and the color filter panel 520. This first layer of adhesive is a low-viscosity adhesive with a viscosity of less than 1000 CPS. The application height of this first layer of adhesive can be obtained from the calculation formula in the above embodiment. Depending on the adhesive viscosity, processes such as piezoelectric valve spraying can be selected.

[0108] like Figure 8 As shown in (c), after the first layer of adhesive is cured, a first adhesive layer is formed on the surface of the edge of the display circuit panel 530.

[0109] like Figure 8 As shown in (d), a dam is set at the edge of the color filter panel 520 using high-viscosity adhesive. This dam is used to block the subsequent application of low-viscosity adhesive at the edge of the color filter panel 520 and limit the flow area of ​​the low-viscosity adhesive.

[0110] like Figure 8 As shown in (e), a second layer of adhesive is applied between the dam and the upper polarizer 510. This second layer of adhesive is a low-viscosity adhesive with a viscosity of less than 1000 CPS. The application height of this second layer of adhesive can be obtained from the calculation formula in the above embodiment. Depending on the adhesive viscosity, processes such as piezoelectric valve spraying can be selected.

[0111] like Figure 8 As shown in (f), after the second layer of adhesive is cured, a second adhesive layer is formed on the surface of the edge of the color filter panel 520.

[0112] Optionally, in the above Figure 8 In the example shown, both the first and second layers of adhesive are low-viscosity adhesives. Alternatively, both the first and second layers of adhesive can be non-low-viscosity adhesives (e.g., adhesives with a viscosity greater than 1000 CPS), or the first and second layers can be non-viscosity adhesives and low-viscosity adhesives, respectively.

[0113] When the first and / or second adhesive layers use adhesives with a viscosity greater than 1000 CPS, the above... Figure 8 Steps (a) and / or (d) in the illustrated embodiment can be omitted. In other words, when the viscosity of the adhesive is high, it is not necessary to use a damming process to create dams at the edges of the panel. However, when the viscosity of the adhesive is high, in order to improve the smoothness of the cured adhesive layer, a needle valve semi-contact dispensing method can be used, applying and scraping simultaneously to make the surface smooth.

[0114] When the adhesive viscosity is low, the colloidal form is similar to water, allowing it to flow and level naturally. Therefore, using a lower viscosity adhesive for coating helps improve the smoothness of the adhesive layer surface. In some embodiments, a lower viscosity adhesive can be used to form the second adhesive layer 570 to improve surface smoothness and enhance the appearance of the display module. Alternatively, a higher viscosity adhesive can be used to form the first adhesive layer 560. The coating of the first adhesive layer 560 does not require a damming process, which helps reduce manufacturing costs.

[0115] Optionally, the viscosity of the adhesive in the above embodiments can be between 200 CPS and 20000 CPS. The viscosity of the two layers of adhesive can be arbitrarily selected, and the embodiments of this application do not specifically limit its viscosity value.

[0116] In this embodiment, two layers of adhesive are used to fill the edges of the display module, which not only improves the appearance but also makes the process easier to implement and reduces production costs.

[0117]

Example 2

[0118] In this embodiment, the first filler located between the edge of the color filter panel and the edge of the display circuit panel includes a magnetic element, and the second filler located between the edge of the upper polarizer and the edge of the first filler includes a metal element.

[0119] Figure 9 A schematic diagram of another display module provided in an embodiment of this application is shown.

[0120] like Figure 9 As shown, the display module 900 includes: an upper polarizer 910, a color filter panel 920, a display circuit panel 930, and a lower polarizer 940 stacked together. On the side of the display circuit panel 930 connected to an electrical connector (not shown), the edge of the color filter panel 920 is recessed within the edge of the display circuit panel 930, and a magnetic element 960 is accommodated between the edge of the color filter panel 920 and the edge of the display circuit panel 930. The edge of the upper polarizer 910 is recessed within the edge of the color filter panel 920, and a metal element 970 is accommodated between the edge of the upper polarizer 910 and the edge of the magnetic element 960. The color of the metal element 970 can be the same as the color of the display module 900 when it is not lit.

[0121] Optionally, the magnetic component 960 may include a hard magnetic material. A magnetic attraction effect may exist between the metal component 970 and the magnetic component 960. The material of the metal component 970 may include, for example, steel or other materials that can be attracted by the magnetic component.

[0122] like Figure 9As shown, in some embodiments, the display module 900 may further include an adhesive layer 980, which covers the magnetic component 960 and is used to fix the magnetic component 960 to the surface of the display circuit panel 930. The thickness of the magnetic component 960 may be less than the thickness of the color filter panel 920, and the thickness of the adhesive layer 980 is also less than or equal to the thickness of the color filter panel 920. Alternatively, in other embodiments, the thickness of the magnetic component 960 may be close to or the same as the thickness of the color filter panel 920, the bottom surface of the magnetic component 960 may be connected to the display circuit panel 930 through the adhesive layer, and the top surface of the magnetic component 960 may be attached to the metal component 970 to achieve a better magnetic attraction effect with the metal component 970.

[0123] Figure 10 Another schematic diagram of the display module provided in an embodiment of this application is shown.

[0124] like Figure 10 As shown, the display module 900 may include a plurality of magnetic components 960, which are distributed on one side edge of the display circuit panel 930. A plurality of electrical connectors 950 may be connected to this side of the display circuit panel 930. As an example, Figure 10 The electrical connector 950 shown can be COF. Multiple magnetic elements 960 can be disposed between the multiple electrical connectors 950 and / or at both ends of the multiple electrical connectors 950, so that the multiple magnetic elements 960 can be distributed more evenly on one side edge of the display circuit panel 930, improving the magnetic attraction and fixing effect with the metal element 970, thereby improving the reliability of the display module 900.

[0125] Optionally, the width of the magnetic element 960 may be less than or equal to the distance between the edge of the color filter panel 920 and the edge of the display circuit panel 930 (e.g., it can be...). Figure 7 W1 as shown. The height of the magnetic element 960 may be less than or equal to the thickness of the color filter panel 920 (e.g., it can be W1). Figure 7 As shown in H2), the length L1 of the magnetic element 960 may be less than or equal to the spacing between two adjacent electrical connectors 950. The length L2 of the magnetic element 960 located at both ends of the plurality of electrical connectors 950 is less than or equal to the distance between the electrical connectors 950 at both ends and the edge of the display circuit panel 930.

[0126] Optionally, the number of magnetic components 960 = the number of electrical connectors 950 * n + 2, where n is a positive integer. Optionally, one or more magnetic components 960 can be provided between two adjacent electrical connectors 950.

[0127] Optionally, the metal part 970 can be, for example, stainless steel SUS403. The thickness of the metal part 970 can be equal to or slightly less than the thickness H1 of the upper polarizer 910 (for example, it can be...). Figure 7 H1 as shown in the figure.

[0128] In this embodiment, magnetic and metal components are used to fill the edges of the display module, which not only provides better flatness but also solves the appearance problem and facilitates the disassembly of the metal components, thereby facilitating the installation and maintenance of the display module.

[0129]

Example 3

[0130] In this embodiment, the first filler located between the edge of the color filter panel and the edge of the display circuit panel includes an adhesive layer, and the second filler located between the edge of the upper polarizer and the edge of the first filler includes a polyester board.

[0131] Figure 11 A schematic diagram of another display module provided in an embodiment of this application is shown.

[0132] like Figure 11 As shown, the display module 1100 includes: an upper polarizer 1110, a color filter panel 1120, a display circuit panel 1130, and a lower polarizer 1140 stacked together. On the side of the display circuit panel 1130 connected to an electrical connector (not shown), the edge of the color filter panel 1120 is recessed within the edge of the display circuit panel 1130, and an adhesive layer 1160 is accommodated between the edge of the color filter panel 1120 and the edge of the display circuit panel 1130. The edge of the upper polarizer 1110 is recessed within the edge of the color filter panel 1120, and a polyester board 1170 is accommodated between the edge of the upper polarizer 1110 and the edge of the adhesive layer 1160. The color of the polyester board 1170 can be the same as the color of the display module 1100 when it is not illuminated.

[0133] Optionally, in this embodiment, the polyester sheet 1170 can be a polyethylene terephthalate (PET) sheet, or simply a PET sheet. The PET sheet is a sheet-like material formed from PET material. In some embodiments, the upper polarizer 1110 can also be made of PET, and the polyester sheet 1170 can be made of the same material as the upper polarizer 1110.

[0134] In this embodiment, the appearance of the polyester board 1170 can be made consistent with that of the unlit display module 1100 by adjusting parameters such as color and haze, thereby improving the aesthetics of the display module 1100.

[0135] Figure 12 Another schematic diagram of the display module provided in an embodiment of this application is shown.

[0136] like Figure 12As shown in this embodiment, a polyester plate 1170 and a light-shielding tape 1180 are accommodated between the edge of the upper polarizer 1110 and the edge of the adhesive layer 1160. The polyester plate 1170 can be attached to the color filter panel 1120 and the adhesive layer 1160 by the light-shielding tape 1180. The color of the light-shielding tape 1180 can be the same as the color of the display module 1100 when it is not lit.

[0137] In this embodiment, the appearance of the polyester board 1170 can be made consistent with that of the unlit display module 1100 by adjusting parameters such as the color of the light-shielding tape 1180, thereby improving the aesthetics of the display module 1100. Furthermore, adjusting the color of the light-shielding tape 1180 is easier to implement and reduces manufacturing costs compared to adjusting the color of the polyester board 1170. Additionally, the light-shielding tape 1180 can further enhance the stability of the polyester board 1170 within the display module 1100.

[0138] Optionally, in Figure 11 and Figure 12 In the illustrated embodiment, the thickness of the adhesive layer 1160 can be less than or equal to the thickness of the color filter panel 1120. Figure 11 In the illustrated embodiment, the thickness of the polyester sheet 1170 can be less than or equal to the thickness of the upper polarizer 1110. Figure 12 In the illustrated embodiment, the sum of the thicknesses of the polyester sheet 1170 and the light-shielding tape 1180 may be less than or equal to the thickness of the upper polarizer 1110.

[0139] The technical solution of this application embodiment uses polyester board (PET board) and adhesive layer to fill the edge of the display module. PET has a certain elasticity and has a rebound effect when the user presses and indents it, which is conducive to further improving the appearance of the display module.

[0140] In order to further improve the appearance of the display module, in addition to the filling schemes in the above embodiments, this application can also provide the following related solutions for circuit board protection components.

[0141] Figure 13 Another schematic diagram of the display module provided in an embodiment of this application is shown.

[0142] like Figure 13 As shown in this embodiment, the display module 1300 includes, in addition to the stacked upper polarizer 1310, color filter panel 1320, display circuit panel 1330, and lower polarizer 1340, an electrical connector 1350 and a circuit board protection component 1380. Optionally, the electrical connector 1350 in this embodiment can be... Figure 2 In the illustrated embodiment, the COF272 and circuit board protection component 1380 can be... Figure 2The circuit board protection element 290 in the illustrated embodiment. (Refer to...) Figure 2 The technical solution of the illustrated embodiment shows that the electrical connector 1350 can be connected to the circuit board in this embodiment of the application. Figure 13 (Not shown in the image), the circuit board protector 1380 can be used to protect the circuit board and to prevent EMI between the circuit board and other electrical components.

[0143] A circuit board protector 1380 is disposed on the side where the display circuit panel 1330 is connected to the electrical connector 1350. A bent portion is formed at one end of the circuit board protector 1380 near the upper polarizer 1310. The first sub-part 1381 of the bent portion is parallel to the upper polarizer 1310, and the second sub-part 1382 of the bent portion is perpendicular to the first sub-part 1381. There is a gap between the second sub-part 1382 and the display circuit panel 1330.

[0144] In the technical solution provided in the embodiments of this application, the circuit board protector is provided with a bending part, which can reduce the possibility that the circuit board protector directly touches each panel (such as the display circuit panel) in the display module, and reduce the occurrence of problems such as light leakage.

[0145] In some possible implementations, in a direction parallel to the upper polarizer 1310, the length C1 of the first sub-part 1381 may be less than or equal to the distance between the edge of the upper polarizer 1310 and the edge of the display circuit panel 1330 (e.g., it can be...). Figure 7 (W2 as shown). In some examples, the length C1 of the first sub-part 1381 can be between 2 mm and 3 mm.

[0146] In this embodiment, the impact of the first sub-part on the overall appearance of the display module can be reduced by designing the size of the first sub-part, thereby further improving the aesthetic appeal of the display module.

[0147] Optionally, in Figure 13 In the illustrated embodiment, the first filler located between the edge of the color filter panel and the edge of the display circuit panel includes a first adhesive layer 1361, and the second filler located between the edge of the upper polarizer and the edge of the first filler includes a second adhesive layer 1371. The first sub-part 1381 in the circuit board protector 1380 can approach or abut against the second adhesive layer 1371. The upper surface of the first sub-part 1381 can be flush with the upper surface of the upper polarizer 1310 and the upper surface of the second adhesive layer 1371. For related implementations of the first adhesive layer 1361 and the second adhesive layer 1371 in this technical solution, please refer to Embodiment 1 above. Figures 5 to 8 The relevant descriptions of the embodiments shown are not elaborated here.

[0148] Figure 14Another schematic diagram of the display module provided in an embodiment of this application is shown.

[0149] like Figure 14 As shown in this embodiment, the first filler located between the edge of the color filter panel and the edge of the display circuit panel includes a magnetic element 1362 and an adhesive layer 1363, and the second filler located between the edge of the upper polarizer and the edge of the first filler includes a metal element 1372. The first sub-part 1381 in the circuit board protector 1380 can be close to the adhesive layer 1363. The upper surface of the first sub-part 1381 can be flush with the upper surface of the adhesive layer 1363 and the upper surface of the color filter panel 1320. In addition to being disposed on the surfaces of the adhesive layer 1363 and the color filter panel 1320, the metal element 1372 can also extend to the surface of the first sub-part 1381 in the circuit board protector 1380. For related implementations of the magnetic element 1362, adhesive layer 1363, and metal element 1372, please refer to Embodiment 2 above. Figures 9 to 10 The relevant descriptions of the embodiments shown are not elaborated here.

[0150] Figure 15 Another schematic diagram of the display module provided in an embodiment of this application is shown.

[0151] like Figure 15 As shown in this embodiment, the first filler located between the edge of the color filter panel and the edge of the display circuit panel includes an adhesive layer 1364, and the second filler located between the edge of the upper polarizer and the edge of the first filler includes a polyester board 1373. Optionally, it may further include a light-shielding tape 1374. The first sub-part 1381 in the circuit board protector 1380 can be close to the adhesive layer 1364. The upper surface of the first sub-part 1381 can be flush with the upper surface of the adhesive layer 1364 and the upper surface of the color filter panel 1320. In addition to being disposed on the surfaces of the adhesive layer 1364 and the color filter panel 1320, the polyester board 1373 and the light-shielding tape 1374 can also extend to the surface of the first sub-part 1381 in the circuit board protector 1380. In this technical solution, the relevant implementations of the adhesive layer 1364, the polyester board 1373 and the light-shielding tape 1374 can be found in Embodiment 3 above. Figures 11 to 12 The relevant descriptions of the embodiments shown are not elaborated here.

[0152] exist Figure 14 and Figure 15 In the embodiment shown, the appearance color of the circuit board protector 1380 does not need to be considered. By extending the metal part or polyester board onto the surface of the circuit board protector 1380, the appearance color of the display module can be unified, which is beneficial to further reduce the manufacturing cost of the circuit board protector 1380 and the display module.

[0153] This application also provides a display screen, which may include the display module provided in any of the embodiments described above.

[0154] Figure 16 A schematic diagram of a display screen provided in an embodiment of this application is shown.

[0155] like Figure 16 As shown in this embodiment, the display screen 1600 includes, in addition to the stacked upper polarizer 1610, color filter panel 1620, display circuit panel 1630, and lower polarizer 1640, a backlight, electrical connectors, a circuit board, and circuit board protection components. The upper polarizer 1610, color filter panel 1620, display circuit panel 1630, and lower polarizer 1640 can be referred to in the relevant descriptions of any of the above embodiments, and will not be elaborated upon here.

[0156] See Figure 16 As shown, the backlight in the display screen 1600 may include: an LED light panel 1651, an optical film layer 1652, a light guide plate 1653, a reflective sheet 1654, and a back plate 1655. The backlight and the display module can be connected to each other via connectors, which may include, for example, foam tape 1661, a frame 1662, and a silicone pad 1663 as shown in the figure.

[0157] One side of the display circuit panel 1630 can be connected to an electrical connector, such as COF 1672 shown in the figure. The display circuit panel 1630 can be connected to the circuit board 1680 through the COF 1672. A chip 1671 can also be attached to the COF 1672. The chip 1671 can provide control signals related to the display screen.

[0158] The circuit board protector 1690 can cover the side where the display screen is connected to the COF 1672 to protect the COF 1672 and related electronic components in the related electrical connections.

[0159] On the side where the COF 1672 connects to the display circuit panel 1630, a filler 1601 may be provided at the edge of the display circuit panel 1630 and the color filter panel 1620. The filler 1601 may include an adhesive layer, or the filler may be the relevant material provided in any of the embodiments described above.

[0160] Optionally, Figure 16 The side of the circuit board protector 1690 closest to the display circuit panel 1630 and the COF 1672 can be a straight plate as shown in the figure. This straight plate can be attached to the COF 1672 with light-shielding tape to reduce light leakage of the display screen.

[0161] To further improve light leakage, Figure 16The circuit board protector 1690 shown may also have a bend on the side near the connection between the display circuit panel 1630 and the COF 1672. The relevant technical solution for this bend can be found above. Figures 13 to 15 Description of any of the embodiments.

[0162] It should be understood that the specific examples in this document are only intended to help those skilled in the art better understand the embodiments of this application, and are not intended to limit the scope of the embodiments of this application.

[0163] It should also be understood that the various implementation methods described in this specification can be implemented individually or in combination, and the embodiments of this application are not limited in this respect.

[0164] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances.

[0165] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists, A and B exist simultaneously, and B exists.

[0166] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0167] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0168] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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 limitations on the embodiments of this application.

[0169] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0170] The above description is merely a specific embodiment of this application, but the scope of protection of this application 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 this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display module, characterized by The display module comprises: a plurality of display modules are arranged in a stack, and each of the display modules comprises: a color film panel, a display circuit panel, an upper polarizer, and a lower polarizer; an edge of the color film panel is recessed inwardly relative to an edge of the display circuit panel, and an edge of the upper polarizer is recessed inwardly relative to an edge of the color film panel; 2. The display module of claim 1, wherein, a first filler is arranged between the edge of the color film panel and the edge of the display circuit panel, and a second filler is arranged between the edge of the upper polarizer and the edge of the first filler, wherein the second filler has a color same as a color of the display module in an unlit state.

3. The display module of claim 1, wherein, Part of the second filler is arranged on a surface of the color film panel and covers an electrical connection point of the surface of the color film panel.

4. The display module of claim 3, wherein, The first filler comprises a first adhesive layer, and the second filler comprises a second adhesive layer.

5. The display module of claim 3, wherein, The first adhesive layer and the second adhesive layer are made of different materials.

6. The display module of claim 3, wherein, A convex surface is formed on a side of the first adhesive layer away from the upper polarizer, and / or a convex surface is formed on a side of the second adhesive layer away from the color film panel.

7. The display module of claim 1, wherein, The flatness of the second adhesive layer ranges from -50 μm to 50 μm relative to a plane on which an upper surface of the upper polarizer is located.

8. The display module of claim 7, wherein, The first filler comprises a magnetic piece, and the second filler comprises a metal piece.

9. The display module of claim 7, wherein, A plurality of electrical connectors are connected to one side of the display circuit panel, the first filler comprises a plurality of magnetic pieces, and the plurality of magnetic pieces are arranged between the plurality of electrical connectors and / or at both ends of the plurality of electrical connectors.

10. The display module of claim 7, wherein, The first filler further comprises an adhesive layer covering the magnetic pieces.

11. The display module of claim 1, wherein, The height of the magnetic piece is less than or equal to the thickness of the color film panel, and / or the width of the magnetic piece is less than or equal to the distance between the edge of the color film panel and the edge of the display circuit panel.

12. The display module of claim 1, wherein, The first filler comprises an adhesive layer, and the second filler comprises a polyester plate having a color same as the color of the display module in the unlit state.

13. The display module of any one of claims 1-12, wherein, The first filler comprises an adhesive layer, and the second filler comprises a polyester plate and an optical shielding adhesive tape, wherein the optical shielding adhesive tape has a color same as the color of the display module in the unlit state. The display module further comprises a circuit board and a circuit board protection piece arranged on the side of the display circuit panel to which the electrical connectors are connected.

14. The display module of claim 13, wherein, One end of the circuit board protection piece close to the upper polarizer is formed with a bending portion, a first sub-portion of the bending portion is parallel to the upper polarizer, a second sub-portion of the bending portion is perpendicular to the first sub-portion, and a gap is formed between the second sub-portion and the display circuit panel.

15. The display module of claim 13, wherein, In a direction parallel to the upper polarizer, the length of the first sub-portion is less than or equal to the distance between the edge of the upper polarizer and the edge of the display circuit panel.

16. The display module of claim 13, wherein, In the direction parallel to the upper polarizer, the length of the first sub-portion ranges from 2 mm to 3 mm.

17. A display screen, characterized by The second filler comprises a metal piece or a polyester plate, the surface of the first sub-portion is flush with the surface of the color film panel, and the metal piece or the polyester plate is arranged to extend on the surface of the first sub-portion. The display module comprises: a backlight, and The display module according to any one of claims 1 to 16.

Images