Display module and display device
By setting a polarizer in the cover plate to cover the light-emitting surface in the first area and the side surface in the second area, the problems of light leakage and bright edge in micro OLED display modules are solved, improving the display effect and enhancing product quality and competitiveness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2025-01-14
- Publication Date
- 2026-07-14
AI Technical Summary
Existing micro OLED display modules suffer from light leakage and bright edges at the screen edges when lit, affecting display quality and user experience.
A polarizer is installed on the cover plate. The first area of the polarizer covers the light-emitting surface of the cover plate, and the second area covers the side of the cover plate, so as to achieve all-round coverage, selectively reflect and transmit light, and avoid light leakage and bright light.
This effectively avoids light leakage and bright light issues at the edges of the display module, improves display quality and product yield, and enhances product competitiveness.
Smart Images
Figure CN122392407A_ABST
Abstract
Description
Technical Field
[0001] This invention generally relates to the field of display technology, and more specifically to a display module and a display device. Background Technology
[0002] Micro OLED screens emit unpolarized light, requiring linearly polarized light filters (POLs) and phase retardation plates (i.e., quarter-wave plates, QWPs) to be attached to the cover glass (CG). Unpolarized light is converted to linearly polarized light by a polarizer, and then the linearly polarized light is converted to circularly polarized light by the QWP. Pancake Optics utilizes reflective polarizers to achieve reflection and transmission of light in both polarized states, thus realizing a folded light path. However, related technologies suffer from issues such as light leakage and bright edges at the screen edges when the display module is lit, severely affecting the display effect and resulting in a poor user experience. Summary of the Invention
[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a display module and display device that, by setting a polarizer on the cover plate, with the first area of the polarizer covering the light-emitting surface of the cover plate and the second area adhering to the side of the cover plate, achieves all-round coverage of the cover plate, which is beneficial for reliable selective reflection and transmission of light, avoids light leakage and bright light problems at the edges of the display module, and thus improves the display effect of the display module, and increases the product yield and product competitiveness of the display module.
[0004] In a first aspect, the present invention provides a display module, comprising:
[0005] Display panel, the display panel includes a display area;
[0006] A cover plate, located on the light-emitting side of the display panel, and the orthographic projection of the cover plate on the display panel at least covers the display area. The cover plate includes a light-emitting surface perpendicular to the light-emitting direction of the display panel and a side surface located around the light-emitting surface.
[0007] A polarizer is located on the side of the cover plate away from the display panel. The polarizer includes a first region and a second region. The first region completely covers the light-emitting surface of the cover plate, and the second region covers the side of the cover plate.
[0008] As an alternative, the orthographic projection of the second region onto the side of the cover plate shall at least completely cover the side of the cover plate.
[0009] As an optional solution, the area of the first region projected onto the display panel is greater than or equal to the area of the cover plate projected onto the display panel.
[0010] As an optional solution, the first region and the second region are an integral structure, and the polarizer is in a bent state. In the bent state, the first region covers the light-emitting surface of the cover plate, and the second region bends from the edge of the first region toward the side of the cover plate until it fits against the side of the cover plate.
[0011] As an optional solution, the polarizer also has a flat state. When the polarizer is in the flat state, at least two notches are provided on the polarizer. Each notch extends inward from the edge of the polarizer to the edge of the first region, and the regions on both sides of each notch on the polarizer are configured as the second region.
[0012] As an alternative, the notch is located on the polarizer in the area corresponding to the corner of the cover plate.
[0013] As an alternative, the polarizer forms a first edge and a second edge on both sides of the notch, and the first edge and the second edge abut against each other when the polarizer is in a bent state.
[0014] As an optional solution, the polarizer forms a first overlapping edge and a second overlapping edge on both sides of the notch, and when the polarizer is in a bent state, the first overlapping edge and the second overlapping edge overlap each other.
[0015] As an optional solution, the polarizer is in a flat state, with the first edge and the second edge perpendicular to each other, and the ends of the first edge and the second edge connected near the first region;
[0016] Alternatively, the first overlapping edge and the second overlapping edge are perpendicular to each other, and the ends of the first overlapping edge and the second overlapping edge near the first region are connected.
[0017] As an alternative, the polarizer is laid flat, and the notch is a cut formed along the diagonal of the polarizer.
[0018] As an alternative, the first region and the second region are independent of each other, and the edges of the first region and the second region are in close contact with each other.
[0019] In a second aspect, the present invention provides a display device, including the display module of the first aspect.
[0020] The display module of the present invention features a cover plate disposed on the light-emitting side of the display panel, with a polarizer disposed on the side of the cover plate opposite to the display panel. The polarizer includes a first region and a second region. The first region completely covers the light-emitting surface of the cover plate, and the second region covers the side surface of the cover plate. This allows the polarizer to completely cover both the light-emitting surface and the side surface of the cover plate, providing a comprehensive coverage. This ensures that all light passing through the cover plate is selectively reflected and transmitted by the polarizer, thereby preventing light leakage and bright light at the edges of the display module. Ultimately, this improves the display effect, increases the product yield, and enhances the product competitiveness of the display module. Attached Figure Description
[0021] Other features, objectives, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0022] Figure 1 This is a schematic diagram of the structure of a display module in the prior art;
[0023] Figure 2 This is a schematic diagram of light leakage at the edge of a display module in the prior art;
[0024] Figure 3 This is a schematic diagram of the front structure of the display module according to an embodiment of this application;
[0025] Figure 4 This is a side view of the display module according to an embodiment of this application.
[0026] Figure 5 for Figure 3 Sectional view of plane AA;
[0027] Figure 6 for Figure 3 Sectional view of the middle BB plane;
[0028] Figure 7 This is a schematic diagram of the polarizer structure of the display module of this application.
[0029] In the picture,
[0030] 100. Display Module
[0031] 10. Display panel;
[0032] 20. Cover plate, S1, light-emitting surface, S2, side surface;
[0033] 30. Polarizing film; 31. First region; 32. Second region; 33. Notch; 331. First edge; 332. Second edge;
[0034] 40. Circuit board;
[0035] 50. Backing membrane;
[0036] 60. Heat dissipation film. Detailed Implementation
[0037] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.
[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0039] In related technologies, with the development of VR technology and the pursuit of thinner and lighter designs, the Pancake optical solution has become the mainstream approach. The Pancake solution utilizes the principle of multiple reflections of light to shorten the thickness of the optical system. However, there are countless reflection paths and transmission paths between the surfaces of various lenses. The light from these paths is noise for the imaging optical path and will overwhelm the image. Therefore, this optical system needs to follow the optical design optical path and utilize the principle of light polarization. It uses the characteristics of a reflective polarizer to selectively reflect and transmit light of different polarizations, and works with a quarter-wave plate to adjust the polarization shape of the light. This allows the light to be reflected back and forth between the half-mirror lens and the reflective polarizer, and finally transmitted out from the reflective polarizer.
[0040] The polarizer (POL) is attached to the cover plate (CG) surface. This makes the display screen more versatile, adds an extra variable to the optical system, and allows for free selection of the reflective surface during optical design, potentially improving image quality. However, due to the current method of attaching the POL to the CG in display modules, the POL is generally smaller than the CG (e.g., ...). Figure 1 As shown), this can easily cause issues such as light leakage and bright edges when the display module is turned on (e.g., Figure 2 (As shown).
[0041] In view of the above problems, firstly, embodiments of this application provide a display module 100, such as... Figure 2-6 As shown, it includes:
[0042] Display panel 10, display panel 10 includes display area AA;
[0043] Cover plate 20 is located on the light-emitting side of display panel 10, and the orthographic projection of cover plate 20 on display panel 10 at least covers the display area. Cover plate 20 includes a light-emitting surface S1 perpendicular to the light-emitting direction of display panel 10 and a side surface S2 located around the light-emitting surface S1.
[0044] The polarizer 30 is located on the side of the cover plate 20 away from the display panel 10. The polarizer 30 includes a first region 31 and a second region 32. The first region 31 completely covers the light-emitting surface S1 of the cover plate 20, and the second region 32 covers the side surface S2 of the cover plate 20.
[0045] It should be noted that the display panel 10 in the embodiments of this application can be a curved display panel 10 or a flat display panel 10. A curved display panel 10 includes a flat center and curved edges. The display panel 10 includes a display area and a non-display area located around the periphery of the display area. The display area is used for display, and the non-display area includes bonding pad areas and areas for mounting other structures. The non-display area may include one bonding pad area. Alternatively, depending on actual process requirements, the non-display area may have two or more bonding pad areas.
[0046] The cover plate 20 is mainly used to protect the entire display module. The cover plate 20 is bonded to the light-emitting side of the display panel 10 using optical adhesive (OCA). The orthographic projection of the cover plate 20 onto the display panel 10 at least covers the display area. The cover plate 20 can be, but is not limited to, glass, transparent resin, or PET, as long as it has good light transmittance to ensure reliable light emission. This application does not specifically limit this. Taking glass as an example, when applied to curved display products, at least one side of the cover plate 20 is bent, and the layers of the display module are bonded through a 3D bonding process. Since the cover plate 20 typically has a certain thickness, the light-emitting surface S1 of the cover plate 20 refers to the surface of the cover plate 20 parallel to the display panel 10 (e.g., the surface of the cover plate 20 is parallel to the surface of the display panel 10). Figure 5 The surface parallel to the X direction shown in the diagram), and the side surface S2 of the cover plate 20 refers to the surface parallel to the thickness direction of the cover plate 20 (e.g., the surface parallel to the X direction shown in the diagram). Figure 5 (The surface shown is parallel to the Y direction).
[0047] It is understandable that the polarizer 30 is mainly used to shield ambient light illuminating the interior of the display panel 10, thereby achieving an anti-reflective effect. Typically, the polarizer 30 may include a hard coating (HC), TAC (triacetate cellulose), a polarizing layer (polyvinyl alcohol, PVA), a first photosensitive adhesive layer (Pressure Sensitive Adhesive, PSA), an ND film, and a second photosensitive adhesive layer (PSA) stacked sequentially. In actual use, the polarizer 30 also includes an upper protective film and a lower protective film. The upper protective film is placed above the hard coating, and the lower protective film is placed below the second photosensitive adhesive layer. When the polarizer 30 is installed on the cover plate 20, the lower protective film needs to be removed first, and then the second photosensitive adhesive layer is attached to the cover plate 20.
[0048] It is also understood that the polarizer 30 includes a first region 31 and a second region 32. The first region 31 is mainly used to cover the light-emitting surface S1 of the cover plate 20, so as to avoid the influence of external light on the display effect of the display module. The second region 32 covers the side surface S2 of the cover plate 20, so that both the light-emitting surface S1 and the side surface S2 of the cover plate 20 are covered by the polarizer 30. This can reliably prevent external light from shining into the display panel 10 from the edge and side surface S2 of the cover plate 20, so that the light passing through the cover plate 20 can be selectively emitted and transmitted through the polarizer 30, thereby avoiding problems such as light leakage and bright light at the edge of the display module.
[0049] The polarizer 30 can be one, two, or more, depending on the actual process. When there is only one polarizer 30, it can be bent to form a first region 31 and a second region 32, thus reducing the number of polarizers 30, simplifying the processing, and reliably covering the light-emitting surface S1, edges, and sides S2 of the cover plate 20, thus avoiding light leakage and bright light from the display module. In some embodiments, the number of polarizers 30 can also be four, with one covering the light-emitting surface S1 of the cover plate 20 configured as the first region 31, and the remaining three covering the sides S2 of the cover plate 20 configured as the second region 32. In the actual processing, the edges of the four polarizers 30 must be in close contact with each other.
[0050] The display module of this application solves the problems of light leakage and bright light at the edges of existing display modules. The display module of this application, by providing a cover plate 20 on the light-emitting side of the display panel 10, and a polarizer 30 on the side of the cover plate 20 facing away from the display panel 10, includes a first region 31 and a second region 32. The first region 31 completely covers the light-emitting surface S1 of the cover plate 20, and the second region 32 covers the side surface S2 of the cover plate 20. In this way, the polarizer 30 can completely cover both the light-emitting surface S1 and the side surface S2 of the cover plate 20, achieving a wraparound coverage. This allows light passing through the cover plate 20 to be selectively reflected and transmitted by the polarizer 30, thereby avoiding problems such as light leakage and bright light at the edges of the display module, improving the display effect, increasing the product yield, and enhancing the product competitiveness of the display module.
[0051] In some embodiments, the display panel 10 includes a substrate, which may be, but is not limited to, a silicon substrate. The silicon substrate may include a silicon substrate and a driving layer, a display layer, a cover plate 20, a polarizer 30, etc., stacked on the silicon substrate in a direction away from the silicon substrate.
[0052] The driving layer may include multiple pixel driving circuits arranged in an array. Each pixel driving circuit may include multiple transistors and capacitors, among other electronic components. For example, each pixel driving circuit may include three transistors and one capacitor, forming a 3T1C (i.e., one driving transistor, two switching transistors, and one capacitor). It may also include more than three transistors and at least one capacitor, such as 4T1C (i.e., one driving transistor, three switching transistors, and one capacitor), 5T1C (i.e., one driving transistor, four switching transistors, and one capacitor), or 7T1C (i.e., one driving transistor, six switching transistors, and one capacitor), etc. The transistors may be thin-film transistors (TFTs).
[0053] It is understood that a thin-film transistor (TFT) may include a control electrode, a first electrode, and a second electrode. The control electrode is the gate of the TFT, the first electrode is one of the source and drain of the TFT, and the second electrode is the other of the source and drain of the TFT.
[0054] In some embodiments, the driving layer may include an active layer, a first gate metal layer (Gate1), a second gate metal layer (Gate2), a first metal trace layer (SD1), and a second metal trace layer (SD2). These layers are configured to form thin-film transistors, capacitors, and multiple signal lines for pixel driving in a pixel driving circuit. For example, the multiple signal lines may include power signal lines, data signal lines, reset signal lines, scan signal lines, enable signal lines, and initialization signal lines, etc. The driving layer may also include insulating layers that space these layers apart.
[0055] The display layer may include a light-emitting device layer and an encapsulation layer. The light-emitting device layer is stacked on the side of the driving layer away from the silicon substrate. The light-emitting device layer may include a pixel definition layer and multiple light-emitting devices. The pixel definition layer has multiple pixel openings, and each pixel opening defines the position of a light-emitting device to form a sub-pixel. For example, the light-emitting device may be an OLED light-emitting device or a QLED light-emitting device. Taking an OLED light-emitting device as an example, along the direction away from the substrate, the light-emitting device may include a first electrode, a light-emitting layer, and a second electrode stacked sequentially. Of course, the light-emitting device may also include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer disposed between the first electrode and the light-emitting layer, and at least one of an electron injection layer, an electron transport layer, and a hole blocking layer disposed between the second electrode and the light-emitting layer; in some embodiments, the first electrode may be an anode layer, and the second electrode may be a cathode layer. The anode layer may be a composite structure composed of a transparent conductive oxide film / metal film / transparent conductive oxide film stacked sequentially. The transparent conductive oxide film is made of materials such as ITO (Indium Tin Oxide) and IZO (Indium Zinc Oxide), and the metal film is made of materials such as gold (Au), silver (Ag), nickel (Ni), and platinum (Pt). For example, the anode layer 12 can also be a single-layer structure, and the material of the single-layer structure can be any of ITO, IZO, Au, Ag, Ni, and Pt. Each pixel opening exposes a portion of the anode layer of the corresponding light-emitting device, and at least a portion of the light-emitting layer is located within the corresponding pixel opening, forming an electrical connection with the corresponding anode layer. For example, the cathode layers of each light-emitting device can be electrically connected to each other, forming a single structure. For example, the cathode layer material can be any of aluminum (Al), silver (Ag), and magnesium (Mg), or any of a magnesium-silver alloy and an aluminum-lithium alloy.
[0056] The encapsulation layer is disposed on the side of the light-emitting device layer away from the silicon substrate to protect the light-emitting device. The encapsulation layer may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer. For example, the first and second inorganic encapsulation layers may be made of inorganic materials such as nitrides, oxides, oxynitrides, nitrates, carbides, or any combination thereof, and the fabrication process may employ chemical vapor deposition (CVD), such as plasma-enhanced chemical vapor deposition (PECVD). For example, the organic insulating layer may be made of materials such as acrylic fiber, hexamethyldisiloxane, polyacrylates, polycarbonate, or polystyrene, and the fabrication process may employ inkjet printing (IJP).
[0057] In some embodiments, the display module further includes a back film 50 and a heat dissipation film 60, which are stacked on the backlight side of the display panel 10 along a direction away from the display panel 10.
[0058] The back film 50 can be a U-Film film, which is attached to the backlight side of the display panel 10 and is mainly used to protect and support the display panel 10. The back film 50 may include an acrylic film (Acryl film) and a polyethylene terephthalate film (PET film) stacked together.
[0059] The heat dissipation film 60 is located on the side of the back film 50 away from the display panel 10. The heat dissipation film 60 can be a superclean foam (SCF) composite film; of course, the heat dissipation film 60 can also adopt a multi-layer stacked structure, wherein the heat dissipation film 60 includes a metal layer, the metal has heat dissipation and electrical conductivity, and the metal layer can generally be copper (Cu) or aluminum (Al); the heat dissipation film 60 can also include an adhesive layer and a functional layer located between the adhesive layer and the metal layer. The adhesive layer is used to bond the heat dissipation film 60 to the backlight side of the display panel 10. The adhesive layer can be embossing (EMBO) or other adhesive materials. EMBO helps to reduce air bubbles generated when bonding with the display panel 10, thereby enhancing the connection strength between the display panel 10 and the heat dissipation film 6080. In practical use, a protective film layer is provided on the adhesive layer of the heat dissipation film 60 on the side opposite to the metal layer to protect the film layer. When using the heat dissipation film 60, the protective film layer needs to be peeled off first. The functional layer has stress buffering performance and can buffer the stress and impact applied to the display panel 10 from the outside. Specifically, the functional layer may include a foam layer, which is disposed on the side of the adhesive layer close to the metal layer. The material of the foam layer can be polyurethane (PU) or other materials. In some other embodiments, the functional layer may also include a support layer, which is disposed on the side of the foam layer close to the metal layer and plays a supporting and impact-resistant role. The support layer can be black to enhance the all-black effect of the product. The support layer can be black PI (Polyimide).
[0060] In some embodiments, the display module further includes a circuit board 40, which is bonded to the display panel 10 in the non-display area.
[0061] The circuit board 40 may include an integrated circuit and a flexible circuit board 40. The integrated circuit and the bonding pad area of the display panel 10 are bonded and connected. The bonding pad area of the display panel 10 and the flexible circuit board 40 are bonded and connected to achieve electrical connection, thereby reliably controlling the light emission of the display panel 10.
[0062] As a possible approach, the orthographic projection of the second region 32 onto the side surface S2 of the cover plate 20 at least completely covers the side surface S2 of the cover plate 20.
[0063] In this embodiment, the orthographic projection of the second region 32 onto the side surface S2 of the cover plate 20 at least completely covers the side surface S2 of the cover plate 20. This means that the area of the second region 32 on the side surface S2 of the cover plate 20 is the same as the area of the side surface S2 of the cover plate 20, or the area of the second region 32 on the side surface S2 of the cover plate 20 is larger than the area of the side surface S2 of the cover plate 20. On the one hand, this prevents light from entering the interior of the display panel 10 from the side surface S2 of the cover plate 20, which is beneficial for reliably covering the side surface S2 of the cover plate 20. On the other hand, it prevents the second region 32 from being too large and affecting the space of the side surface S2 of the display panel 10, and also prevents the second region 32 from being too small and unable to reliably cover the side surface S2 of the cover plate 20.
[0064] As an achievable method, the area of the orthographic projection of the first region 31 onto the display panel 10 is greater than or equal to the orthographic projection of the cover plate 20 onto the display panel 10.
[0065] In this embodiment, the projected area of the first region 31 is greater than or equal to the projected area of the cover plate 20. On the one hand, this is beneficial for reliably covering the light-emitting surface S1 of the cover plate 20, and on the other hand, it is beneficial for conveniently setting the polarizer 30 and reducing the difficulty of the process.
[0066] As an achievable method, the first region 31 and the second region 32 are an integral structure, and the polarizer 30 is in a bent state. In the bent state, the first region 31 covers the light-emitting surface S1 of the cover plate 20, and the second region 32 is bent from the edge of the first region 31 toward the side surface S2 of the cover plate 20 until it fits against the side surface S2 of the cover plate 20.
[0067] In this context, the edge of the first region 31 refers to the area of the first region 31 near the edge of the cover plate 20. The first region 31 can completely cover the light-emitting surface S1 of the cover plate 20 (i.e., the orthographic projection of the first region 31 on the display panel 10 completely coincides with the orthographic projection of the light-emitting surface S1 of the cover plate 20 on the display panel 10). Of course, the first region 31 can also cover a portion of the light-emitting surface S1 of the cover plate 20. After the second region 32 covers the remaining area of the light-emitting surface S1, it is bent to fit against the side surface S2 of the cover plate 20, as long as the polarizer 30 can completely cover the light-emitting surface S1 of the cover plate 20 in the bent state. In the embodiments of this application, the polarizer 30 has a bent state. In actual processing, after the first region 31 of the polarizer 30 covers the light-emitting surface S1 of the cover plate 20, the polarizer 30 is oriented towards the side surface S2 of the cover plate 20 (e.g., ...). Figure 6 (In the direction indicated by the arrow) bend until the second region 32 is attached to the side S2 of the cover plate 20, so that the polarizer 30 can wrap around the light-emitting surface S1 and the side S2 of the cover plate 20.
[0068] In this embodiment, the first region 31 and the second region 32 are an integral structure. By bending, the light-emitting surface S1 and the side surface S2 of the cover plate 20 are covered. The processing is simple and avoids the risk of gaps forming when splicing the first region 31 and the second region 32. This helps to reliably avoid the problems of light leakage and bright light in the display module.
[0069] In some embodiments, such as Figure 7 As shown, the polarizer 30 also has a flat state. When the polarizer 30 is in the flat state, at least two notches 33 are provided on the polarizer 30. Each notch 33 extends inward from the edge of the polarizer 30 to the edge of the first region 31. The regions on both sides of each notch 33 on the polarizer 30 are configured as the second region 32.
[0070] The notch 33 can be formed by cutting or trimming the polarizer 30. The shape and size of the notch 33 can be determined according to the actual size and process requirements of the cover plate 20. For example, the notch 33 can be, but is not limited to, angular or linear. There can be two or more notches 33, and the position of the notch 33 can be located at any position on the polarizer 30, such as, but not limited to, the area of the polarizer 30 corresponding to the corner of the cover plate 20 or the area of the polarizer 30 corresponding to the side of the cover plate 20.
[0071] In this embodiment, during the bending process of the polarizer 30, the notch 33 can be used to release stress, which is beneficial for the polarizer 30 to bend easily, and ensures that the second area 32 after bending can reliably fit with the side S2 of the cover plate 20, avoiding wrinkles or gaps. While reliably covering the cover plate 20 to avoid light leakage or bright light problems, it also ensures that the side S2 structure of the display module is flat, which is convenient for subsequent processes.
[0072] In some embodiments, the notch 33 is located on the polarizer 30 in the region corresponding to the corner of the cover plate 20.
[0073] In this embodiment, the notch 33 is located on the polarizer 30 in the area corresponding to the corner of the cover plate 20, so that the edge of the second region 32 overlaps or abuts at the corner of the notch 33, reducing the impact on the display module structure and avoiding light leakage caused by the gap between the edges of the second region 32 and the notch 33. This helps to ensure that the side surface S2 of the cover plate 20 and the second region 32 are reliably attached, so that the second region 32 covers the side surface S2, preventing external light from entering the display panel 10 from the side surface S2 of the cover plate 20, causing problems such as light leakage or bright light.
[0074] In some embodiments, the polarizer 30 forms a first edge 331 and a second edge 332 on both sides of the notch 33, and when the polarizer 30 is in a bent state, the first edge 331 and the second edge 332 abut against each other.
[0075] The phrase "first edge 331 and second edge 332 abutting" means that the first edge 331 and the second edge 332 are in close contact.
[0076] In this embodiment, the polarizer 30 is in a bent state, with the first edge 331 and the second edge 332 abutting each other. This helps to ensure that the second region 32 reliably covers the side surface S2 of the cover plate 20, preventing gaps from forming on the side surface S2 or at the corners of the cover plate 20. Furthermore, it ensures that the structure of the side surface S2 of the display module is flat and there are no protrusions, reducing the impact on the space of the side surface S2 of the display module. This helps to reliably avoid light leakage or bright light problems in the display module and improve the display effect of the display module.
[0077] In some embodiments, the polarizer 30 forms a first overlapping edge and a second overlapping edge on both sides of the notch 33. When the polarizer 30 is in a bent state, the first overlapping edge and the second overlapping edge overlap each other.
[0078] In this embodiment, the first edge 331 and the second edge 332 overlap each other, which has low process requirements and is easy to process. It can also ensure that the second area 32 completely covers the side S2 and the corner area of the cover plate 20, reliably avoiding light leakage and bright light of the display module and improving the display effect of the display module.
[0079] In some embodiments, when the polarizer 30 is in a flat state, the first edge 331 and the second edge 332 are perpendicular to each other, and the first edge 331 and the second edge 332 are connected near the ends of the first region 31.
[0080] Alternatively, the first overlapping edge and the second overlapping edge are perpendicular to each other, and the first overlapping edge and the second overlapping edge are connected to the ends of the first region 31.
[0081] In this embodiment, the arrangement of the first edge 331 and the second edge 332, or the arrangement of the first overlapping edge and the second overlapping edge, is beneficial to the first edge 331 and the second edge 332 abutting or overlapping after the second region 32 is fully fitted with the side surface S2 of the cover plate 20, thus avoiding gaps that could cause light leakage and other problems.
[0082] As an example, when the polarizer 30 is in a flat state, the notch 33 is a cut formed by cutting along the diagonal direction of the polarizer 30.
[0083] In this embodiment, the cut formed by cutting along the diagonal direction of the polarizer 30 is configured as a notch 33, which is simple to process and can reliably release stress during the bending process of the polarizer 30, ensuring that the second region 32 and the side surface S2 of the cover plate 20 are reliably fitted, avoiding wrinkles or gaps, thereby avoiding problems such as light leakage or bright light in the display module and improving the display effect of the display module.
[0084] In summary, in the display module of the embodiments of this application, the polarizer 30 can completely cover the light-emitting surface S1 and the side surface S2 of the cover plate 20, achieving a wrap-around coverage of the light-emitting surface S1 and the side surface S2 of the cover plate 20. This allows the light passing through the cover plate 20 to be selectively reflected and transmitted through the polarizer 30, thereby avoiding problems such as light leakage and bright light at the edges of the display module, thus improving the display effect of the display module and increasing the product yield and competitiveness of the display module.
[0085] Furthermore, the first region 31 and the second region 32 are an integral structure, and the polarizer 30 is in a bent state. By bending, the light-emitting surface S1 and the side surface S2 of the cover plate 20 are covered. The processing is simple and avoids the risk of gaps forming when splicing the first region 31 and the second region 32. This helps to further reliably avoid the problems of light leakage and bright light in the display module.
[0086] Secondly, the present invention provides a display device, including the display module of the first aspect. It is understood that this display device possesses all the features and advantages of the aforementioned display module, which will not be repeated here. In summary, this display device has high quality and yield, and excellent display effect.
[0087] A display device is a product with image display capabilities. For example, a display device can be any of the following: monitor, television, billboard, digital photo frame, laser printer with display capabilities, telephone, mobile phone, personal digital assistant (PDA), digital camera, portable camcorder, viewfinder, navigator, vehicle, large-area wall display, home appliance, information query equipment (such as business query equipment for e-government, banks, hospitals, power companies, etc.), monitor, etc. A display device can also be a microdisplay or a product containing a microdisplay. Products containing microdisplays can be any of the following: smartwatch, smart bracelet, helmet display, stereoscopic display, and AR devices (such as AR glasses), VR devices (such as VR glasses), etc. For example, a microdisplay can be a display with a display size ranging from approximately 0.2 inches to approximately 2.5 inches, but is not limited to this. Understandably, a microdisplay can also be a display with a smaller display size, such as a display size less than or equal to 0.2 inches.
[0088] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the panel or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise stated, "a plurality of" means two or more.
[0089] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A display module, characterized in that, include: Display panel, the display panel including a display area; A cover plate, the cover plate being located on the light-emitting side of the display panel, and the orthographic projection of the cover plate on the display panel at least covering the display area, the cover plate including a light-emitting surface perpendicular to the light-emitting direction of the display panel and a side surface located around the light-emitting surface; A polarizer is located on the side of the cover plate opposite to the display panel. The polarizer includes a first region and a second region. The first region completely covers the light-emitting surface of the cover plate, and the second region covers the side of the cover plate.
2. The display module according to claim 1, characterized in that, The orthographic projection of the second region onto the side of the cover plate at least completely covers the side of the cover plate.
3. The display module according to claim 1, characterized in that, The area of the first region projected onto the display panel is greater than or equal to the area of the light-emitting surface of the cover plate projected onto the display panel.
4. The display module according to claim 1, characterized in that, The first region and the second region are an integral structure. The polarizer is in a bent state. In the bent state, the first region covers the light-emitting surface of the cover plate, and the second region is bent from the edge of the first region toward the side of the cover plate until it fits against the side of the cover plate.
5. The display module according to claim 4, characterized in that, The polarizer also has a flat state. When the polarizer is in the flat state, at least two notches are provided on the polarizer. Each notch extends inward from the edge of the polarizer to the edge of the first region. The regions on both sides of each notch on the polarizer are configured as the second region.
6. The display module according to claim 5, characterized in that, The notch is located on the polarizer in the area corresponding to the corner of the cover plate.
7. The display module according to claim 5, characterized in that, The polarizer forms a first edge and a second edge on both sides of the notch, and when the polarizer is in the bent state, the first edge and the second edge abut against each other.
8. The display module according to claim 5, characterized in that, The polarizer forms a first overlapping edge and a second overlapping edge on both sides of the notch. When the polarizer is in the bent state, the first overlapping edge and the second overlapping edge overlap each other.
9. The display module according to claim 7 or 8, characterized in that, When the polarizer is in the flat state, the first edge and the second edge are perpendicular to each other, and the first edge and the second edge are connected at their respective ends near the first region; Alternatively, the first overlapping edge and the second overlapping edge are perpendicular to each other, and the first overlapping edge and the second overlapping edge are connected to the ends of the first overlapping edge near the first region.
10. The display module according to claim 5, characterized in that, When the polarizer is in the flat state, the notch is a cut formed by cutting along the diagonal direction of the polarizer.
11. The display module according to claim 1, characterized in that, The first region and the second region are independent of each other, and the edges of the first region and the second region are in close contact with each other.
12. A display device, characterized in that, Includes the display module as described in any one of claims 1-11.