A liquid crystal display device

Abstract

The utility model discloses a liquid crystal display device. Liquid crystal display device includes: back light module, array substrate, array substrate sets up at one side of back light module, liquid crystal layer, liquid crystal layer sets up at one side of array substrate away from back light module, color film substrate, color film substrate sets up at one side of liquid crystal layer away from back light module, first polaroid, first polaroid sets up at one side of color film substrate away from back light module, first polaroid is conductive type polaroid, electrostatic connection structure, electrostatic connection structure includes plane conductive layer and first side surface conductive layer, wherein, plane conductive layer with first polaroid same layer setting, and with the edge of first polaroid is connected, first side surface conductive layer sets up at the side of color film substrate, and with plane conductive layer is connected, electrostatic lead -out structure, one end of electrostatic lead -out structure is connected with electrostatic connection structure, and the other end of electrostatic lead -out structure is grounded. The liquid crystal display device can effectively release static electricity, improve the problem of display failure.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a liquid crystal display device. Background Technology

[0002] With the continuous development of display technology, liquid crystal displays (LCDs) have become widely used in various electronic devices such as mobile phones, tablets, and laptops due to their advantages of low power consumption, wide viewing angles, high brightness, and no harmful radiation. However, static electricity is easily generated during the manufacturing process, which can damage electronic components. To address the problem of ineffective static discharge, existing technologies typically employ conductive polarizers and extend silver paste (Ag) uphill to the upper side of the polarizer to create a static discharge path. However, display defects still exist. Utility Model Content

[0003] This utility model provides a liquid crystal display device for electrostatic discharge to improve the problem of poor display.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model embodiment provides a liquid crystal display device, including: Backlight module; An array substrate, wherein the array substrate is disposed on one side of the backlight module; A liquid crystal layer is disposed on the side of the array substrate away from the backlight module; A color filter substrate, wherein the color filter substrate is disposed on the side of the liquid crystal layer away from the backlight module; A first polarizer is disposed on the side of the color filter substrate away from the backlight module; the first polarizer is a conductive polarizer. An electrostatic connection structure is provided, comprising a planar conductive layer and a first side conductive layer; wherein the planar conductive layer is disposed in the same layer as the first polarizer and is connected to the edge of the first polarizer; the first side conductive layer is disposed on the side of the color filter substrate and is connected to the planar conductive layer. An electrostatic discharge structure is provided, wherein one end of the electrostatic discharge structure is connected to the electrostatic connection structure, and the other end of the electrostatic discharge structure is grounded.

[0005] Optionally, the color filter substrate includes a cover glass, a black matrix, and a color filter layer stacked along a direction close to the backlight module; wherein the black matrix is ​​a conductive black matrix; the black matrix covers the edge of the cover glass; Furthermore, the first polarizer is disposed on the side of the cover glass away from the backlight module; The planar conductive layer of the electrostatic connection structure is located at the edge of the cover glass and is connected to the edge of the first polarizer; the first side conductive layer of the electrostatic connection structure is disposed on the side of the cover glass, and one end of the first side conductive layer is connected to the planar conductive layer, and the other end of the first side conductive layer is connected to the edge of the black matrix.

[0006] Optionally, the electrostatic discharge structure includes a conductive film, one end of which is bonded to the edge of the black matrix, and the other end of which is bonded to the back of the backlight module.

[0007] Optionally, the liquid crystal display device further includes: A second side conductive layer is disposed on the side of the array substrate, and the second side conductive layer leads the signal lines located on the front side of the array substrate to the back side of the array substrate. A flexible circuit board and a printed circuit board, wherein the printed circuit board is located on the back side of the backlight module; one end of the flexible circuit board is bonded to the back side of the array substrate and electrically connected to the second side conductive layer; the other end of the flexible circuit board is electrically connected to the printed circuit board.

[0008] Optionally, the color filter substrate includes a support glass, a black matrix, and a color filter layer stacked along a direction close to the backlight module; wherein the black matrix is ​​a conductive black matrix; and the black matrix covers the edge of the support glass; The liquid crystal display device further includes a cover glass, which is located on the side of the first polarizer away from the color filter substrate; The planar conductive layer of the electrostatic connection structure is located at the edge of the supporting glass and is connected to the edge of the first polarizer; the first side conductive layer of the electrostatic connection structure is disposed on the side of the supporting glass, and one end of the first side conductive layer is connected to the planar conductive layer, and the other end of the first side conductive layer is connected to the edge of the black matrix.

[0009] Optionally, the electrostatic discharge structure includes a conductive adhesive, one end of which is bonded to the first side conductive layer of the electrostatic connection structure, and the other end of which is bonded to the side surface of the array substrate away from the backlight module.

[0010] Optionally, the electrostatic discharge structure further includes a conductive film, one end of which is bonded to the edge of the planar conductive layer of the electrostatic connection structure, and the other end of which is bonded to the back of the backlight module.

[0011] Optionally, the planar shape of the supporting glass is quadrilateral; the planar conductive layer of the electrostatic connection structure is disposed at at least two vertices of the supporting glass, and at the vertices, the planar conductive layer of the electrostatic connection structure is L-shaped.

[0012] Optionally, the liquid crystal display device includes a display area and a non-display area; In the non-display area, the cross-sectional width of the planar conductive layer of the electrostatic connection structure is smaller than the edge width of the black matrix.

[0013] Optionally, the planar conductive layer of the electrostatic connection structure is parallel to the edge of the supporting glass.

[0014] This embodiment of the invention achieves electrostatic discharge by setting up an electrostatic connection structure and an electrostatic discharge structure. Specifically, the electrostatic connection structure includes a planar conductive layer and a first side conductive layer. The planar conductive layer is located at the edge of the first polarizer and is electrically connected to it. The first side conductive layer is located on the side of the color filter substrate and is connected to the planar conductive layer. The electrostatic discharge structure is electrically connected to the electrostatic connection structure and grounded, thus constructing a complete electrostatic conduction path and achieving effective electrostatic discharge. The planar conductive layer is less likely to interfere with the first polarizer, avoiding interference between the Ag adhesive and the first polarizer compared to related technologies. Therefore, this embodiment of the invention improves the display defect problem while achieving electrostatic discharge. Attached Figure Description

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

[0016] Figure 1 This is a plan view of a liquid crystal display device in related technologies; Figure 2 yes Figure 1 Schematic diagram of the cross section of AA; Figure 3 This is a plan view of another liquid crystal display device in related technologies; Figure 4 yes Figure 3 A schematic diagram of the cross-section of BB; Figure 5 This is a plan view of a liquid crystal display device provided in an embodiment of the present utility model; Figure 6 yes Figure 5 A cross-sectional schematic diagram of CC; Figure 7 yes Figure 5 A cross-sectional schematic diagram of another type of CC; Figure 8 This is a flowchart illustrating the manufacturing process of a liquid crystal display device according to an embodiment of the present invention; Figure 9 This is a plan view of another liquid crystal display device provided in an embodiment of the present utility model; Figure 10 yes Figure 9 A schematic diagram of the cross section of DD. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] Figure 1 This is a plan view of a liquid crystal display device in related technologies; Figure 2 yes Figure 1 A schematic diagram of the cross-section of AA. See also Figure 1 and Figure 2The liquid crystal display device 100 mainly consists of a cover glass (CG), optically clear adhesive (OCA), an upper polarizer (Up Pol), a color filter (CF), an over coat (OC), a thin film transistor (TFT) array layer, a down polarizer (Down Pol), a back light module (B / L), a printed circuit board (PCB), and an edge sealing structure (e.g., room temperature vulcanizing silicone rubber RTV).

[0020] The LCD consists of several key components: CG (Color Filter) protects the internal structure from scratches and contamination; OCA (Optical Color Filter) bonds the CG to components like the Up Pol (Up Filter); the Up Pol only allows light vibrating in a specific direction to pass through, filtering the polarization direction of incident light and is a crucial component for controlling the polarization state of light in a liquid crystal display (LCD); CF (Color Filter) consists of red, green, and blue color layers used to achieve color display. A rich variety of colors can be displayed through combinations of different color filters and backlighting; OC covers the color filters and other structures, protecting them and ensuring a smooth surface; the TFT array layer is the core component of the array substrate, with each pixel corresponding to one or more TFTs. The Down Pol and Up Pol work together to control the polarization state of light; B / L (Brightness / Light Source) provides the light source for the LCD, enabling the image to be seen; the PCB (Printed Circuit Board) carries and connects various electronic components, providing driving circuits and signal transmission paths for TFTs and other components, ensuring the entire display device operates normally according to control signals; and RTV (Real-Time Transmission) provides sealing and fixation.

[0021] However, this type of liquid crystal display device 100 has the problem that static electricity cannot be effectively released. Therefore, when the touch and display integrated solution is used to conduct electrostatic discharge tests on the client, the device is prone to displaying a white screen.

[0022] In related technologies, electrostatic discharge can be performed in the following ways to improve the performance of liquid crystal display devices.

[0023] Figure 3 This is a plan view of another liquid crystal display device in related technologies; Figure 4 yes Figure 3 A schematic diagram of the cross-section of BB. See also Figure 3 and Figure 4In this liquid crystal display device 200, the Up Pol is a conductive polarizer, and Ag adhesive is arranged to creep up from the ground area of ​​the TFT array substrate to the Up Pol, so that static electricity can be released through the Up Pol and Ag adhesive to ground, thereby solving the problem of ineffective static electricity release. However, the edge of the Ag adhesive creeping up to the Up Pol is prone to interference with the Up Pol, which can lead to display defects.

[0024] In view of this, the present invention provides a liquid crystal display device. Figure 5 This is a plan view of a liquid crystal display device provided in an embodiment of the present utility model; Figure 6 yes Figure 5 A schematic diagram of the cross-section of C. See also: Figure 5 and Figure 6 The liquid crystal display device 300 includes: Backlight module 310; An array substrate 320 is disposed on one side of the backlight module 310; The liquid crystal layer 330 is disposed on the side of the array substrate 320 away from the backlight module 310; Color filter substrate 340 is disposed on the side of liquid crystal layer 330 away from backlight module 310; The first polarizer 350 is disposed on the side of the color filter substrate 340 away from the backlight module 310; the first polarizer 350 is a conductive polarizer. The electrostatic connection structure 360 ​​includes a planar conductive layer 361 and a first side conductive layer 362. The planar conductive layer 361 is disposed in the same layer as the first polarizer 350 and is connected to the edge of the first polarizer 350. The first side conductive layer 362 is disposed on the side of the color filter substrate 340 and is connected to the planar conductive layer 361. The electrostatic discharge structure 370 has one end connected to the electrostatic connection structure 360, and the other end of the electrostatic discharge structure 370 is grounded. The backlight module 310 is the light source component of the liquid crystal display device 300, and the array substrate 320 is the driving component of the liquid crystal display device 300, on which TFTs and other components are integrated. The arrangement of liquid crystal molecules in the liquid crystal layer 330 can be controlled by electrical signals from the array substrate 320, thereby adjusting the light transmittance and realizing pixel brightness changes. The color filter substrate 340 includes red, green, and blue color filters, which are used to decompose white light into colored light, and achieve color display in conjunction with pixel control.

[0025] The first polarizer 350 can both filter polarized light in a specific direction and participate in electrostatic conduction due to its conductivity, providing a path for electrostatic discharge. The planar conductive layer 361 can receive the electrostatic charge conducted by the first polarizer 350, and then conduct the electrostatic charge received by the planar conductive layer 361 to the side direction through the first side conductive layer 362. The electrostatic discharge structure 370 can finally introduce the electrostatic charge conducted from the electrostatic connection structure 360 ​​to the ground, thereby achieving effective electrostatic discharge and avoiding display abnormalities caused by electrostatic accumulation.

[0026] For example, the planar conductive layer 361 is made of indium tin oxide (ITO) material. This type of material has excellent light transmittance and conductivity, which can form a good electrical connection with the first polarizer 350, which is also conductive, and can reduce the obstruction of light transmission in the display area, thus ensuring the clarity of the display image. The first side conductive layer 362 can be made of metal material. Metal material has lower resistance and more stable conductivity, which can efficiently bear the static electricity conducted by the planar conductive layer 361 and quickly transmit it through the side of the color filter substrate 340, thereby ensuring the efficiency of static electricity conduction.

[0027] In addition, the liquid crystal display device 300 also includes a second polarizer 390, which can be disposed between the backlight module 310 and the array substrate 320.

[0028] This embodiment of the invention achieves electrostatic discharge by setting an electrostatic connection structure 360 ​​and an electrostatic discharge structure 370. Specifically, the electrostatic connection structure 360 ​​includes a planar conductive layer 361 and a first side conductive layer 362. The planar conductive layer 361 is located at the edge of the first polarizer 350 and is electrically connected to it. The first side conductive layer 362 is located on the side of the color filter substrate 340 and is connected to the planar conductive layer 361. The electrostatic discharge structure 370 is electrically connected to the electrostatic connection structure 360 ​​and grounded, thus constructing a complete electrostatic conduction path and achieving effective electrostatic discharge. The planar conductive layer 361 is designed to minimize interference with the first polarizer 350, avoiding interference between the Ag adhesive and the first polarizer 350 compared to related technologies. Therefore, this embodiment of the invention improves the display defect problem while achieving electrostatic discharge.

[0029] In the above embodiments, there are various ways to set the electrostatic connection structure 360 ​​and the electrostatic discharge structure 370, which will be described in detail below, but this is not intended to limit the present invention.

[0030] Figure 7 yes Figure 5Another cross-sectional schematic diagram of CC. In one embodiment, optionally, the color filter substrate 340 includes a cover glass 380, a black matrix 342 and a color filter layer 343 stacked along a direction close to the backlight module 310; wherein, the black matrix 342 is a conductive black matrix; the black matrix 342 covers the edge of the cover glass 380.

[0031] In this embodiment, the cover glass 380 is reused as a support glass; and the first polarizer 350 is disposed on the side of the cover glass 380 away from the backlight module 310.

[0032] The planar conductive layer 361 of the electrostatic connection structure 360 ​​is located at the edge of the cover glass 380 and is connected to the edge of the first polarizer 350; the first side conductive layer 362 of the electrostatic connection structure 360 ​​is disposed on the side of the cover glass 380, and one end of the first side conductive layer 362 is connected to the planar conductive layer 361, and the other end of the first side conductive layer 362 is connected to the edge of the black matrix 342.

[0033] Specifically, the conductive black matrix 342 has both light-shielding and electrical conductivity functions, enabling it to be electrically connected to the electrostatic connection structure 360 ​​and providing a path for electrostatic discharge. The color filter layer 343 decomposes white light into colored light; for example, the color filter layer 343 includes a red filter area, a green filter area, and a blue filter area. In this embodiment, the cover glass 380 serves the dual functions of outer protection and the carrier of the color filter substrate 340. It replaces the traditional support glass, providing fixed support for the black matrix 342 and the color filter layer 343, while retaining its protective function as a cover. Since the cover glass 380 also has a first polarizer 350 with explosion-proof function, there is no need for an additional explosion-proof layer on the cover glass 380.

[0034] Furthermore, the cover glass 380 can be strengthened. For example, before the box-making process, the large cover glass 380 plate is placed in a specific potassium nitrate solution at approximately 450°C, where strengthening is achieved through the replacement of potassium and sodium ions. After the box-making process is completed, it is cut into individual pieces using computer numerical control (CNC) cutting or laser cutting.

[0035] In this embodiment, the electrostatic discharge path is as follows: the static electricity accumulated on the surface of the first polarizer 350 is sequentially transferred to the planar conductive layer 361, the first side conductive layer 362 and the black matrix 342, and then released to ground through the electrostatic discharge structure 370.

[0036] This embodiment simplifies the structure of the liquid crystal display device 300 and reduces its thickness by reusing the support glass with the cover glass 380. However, in related technologies, to reduce the thickness of the liquid crystal display device, the thickness of the array substrate and the color filter substrate needs to be reduced from 0.4 mm to 0.15 mm, and thinner samples of functional films such as OCA, CG, and anti-glare films are selected. However, the thinning process of each film layer carries the risk of low yield and insufficient reliability, which affects product quality. This embodiment of the invention reduces the thickness without thinning each film layer, thus achieving both a thinner profile and better display performance.

[0037] Based on the above embodiments, please continue to refer to Figure 7 Optionally, the electrostatic discharge structure 370 includes a conductive film 371, one end of which is bonded to the edge of the black matrix 342, and the other end of which is bonded to the back of the backlight module 310.

[0038] In this embodiment, the electrostatic discharge path is as follows: the static electricity accumulated on the surface of the first polarizer 350 is sequentially transferred to the planar conductive layer 361, the first side conductive layer 362, the black matrix 342, the conductive film 371, and the backlight module 310 for grounding release. The backlight module 310 is equipped with a grounding structure, which can ultimately safely conduct the static electricity to the ground.

[0039] For example, the conductive film 371 is a Mylar film, which has the functions of light shielding and conductivity, and can conduct static electricity while avoiding external stray light from interfering with the internal display structure of the device.

[0040] Based on the above embodiments, please continue to refer to Figure 7 Optionally, the liquid crystal display device 300 further includes: The second side conductive layer 363 is disposed on the side of the array substrate 320, and the second side conductive layer 363 leads the signal lines located on the front side of the array substrate 320 to the back side of the array substrate 320.

[0041] The flexible printed circuit board (FPC) and the printed circuit board (PCB) are located on the back side of the backlight module 310. One end of the FPC is bonded to the back side of the array substrate 320 and electrically connected to the second side conductive layer 363. The other end of the FPC is electrically connected to the PCB.

[0042] The function of the second side conductive layer 363 is signal transduction. Through the second side conductive layer 363, signal lines originally located on the front side of the array substrate 320 can be guided from the side and extended to the back side of the array substrate 320, realizing signal transmission and creating conditions for subsequent bonding with the FPC and the array substrate 320. For example, the second side conductive layer 363 is made of a metallic material.

[0043] This embodiment uses the second side conductive layer 363 to lead the signal lines from the front side of the array substrate 320 to the back side, thus achieving bonding between the FPC and the back side of the array substrate 320. This configuration avoids bonding the FPC from the front side of the array substrate 320, and is suitable for situations where the height between the array substrate 320 and the cover glass 380 is small, which helps to simplify the bonding process.

[0044] Based on the above embodiments, please continue to refer to Figure 5 Optionally, the cover glass 380 has a quadrilateral shape; the planar conductive layer 361 of the electrostatic connection structure 360 ​​is disposed at at least two vertices of the cover glass 380, and at the vertices, the planar conductive layer 361 of the electrostatic connection structure 360 ​​has an L-shaped shape.

[0045] Among them, the vertex is an area where static electricity is easily accumulated. Placing the planar conductive layer 361 at the vertex can more accurately collect static electricity in these areas. The L-shaped design of the planar conductive layer 361 can fit the two adjacent edges of the vertex and avoid entering the display area 301.

[0046] Based on the above embodiments, please continue to refer to Figure 5 Optionally, the liquid crystal display device 300 includes a display area 301 and a non-display area 302.

[0047] In the non-display area 302, the cross-sectional width of the planar conductive layer 361 of the electrostatic connection structure 360 ​​is smaller than the edge width of the black matrix 342.

[0048] The fact that the cross-sectional width of the planar conductive layer 361 is smaller than the edge width of the black matrix 342 allows the planar conductive layer 361 to be completely enclosed within the coverage area of ​​the black matrix 342. This ensures that the planar conductive layer 361 will not exceed the light-shielding range of the black matrix 342 and thus not be exposed, while also relying on the structural protection of the black matrix 342 to reduce damage caused by external factors.

[0049] Based on the above embodiments, please continue to refer to Figure 5 Optionally, the planar conductive layer 361 of the electrostatic connection structure 360 ​​is parallel to the edge of the cover glass 380. This parallel arrangement allows the planar conductive layer 361 to uniformly cover the edge of the cover glass 380, ensuring that static electricity can be conducted evenly along the edge and improving overall conduction stability.

[0050] Figure 8 This is a flowchart illustrating the manufacturing process of a liquid crystal display device according to an embodiment of this utility model. See also... Figure 8 The manufacturing process of the liquid crystal display device 300 includes the following steps: S510, Color filter substrate 340 process: Using cover glass 380 as a carrier, an L-shaped planar conductive layer 361 is fabricated in the edge area of ​​cover glass 380. S520, Cell assembly process: The color filter substrate 340, which has completed the fabrication of the planar conductive layer 361, is aligned and bonded with the array substrate 320, and liquid crystal is injected to complete the cell assembly process. S530, First Side Conductive Layer 362 and Second Side Conductive Layer 363 Process: Using side wiring technology, the first side conductive layer 362 is provided on the side of the cover glass 380, and the second side conductive layer 363 is provided on the side of the array substrate 320. S540, Module manufacturing process: Assemble components such as the backlight module 310 and attach them using the conductive film 371 to complete the connection of the electrostatic discharge structure 370 and the assembly of the overall module.

[0051] Figure 9 This is a plan view of another liquid crystal display device provided in an embodiment of the present utility model; Figure 10 yes Figure 9 A schematic cross-sectional view of DD. See also... Figure 9 and Figure 10 The color filter substrate 340 of the liquid crystal display device 400 includes a support glass 341, a black matrix 342, and a color filter layer 343 stacked along a direction close to the backlight module 310; wherein, the black matrix 342 is a conductive black matrix; the black matrix 342 covers the edge of the support glass 341. The liquid crystal display device 400 also includes a cover glass 380, which is located on the side of the first polarizer 350 away from the color filter substrate 340.

[0052] The planar conductive layer 361 of the electrostatic connection structure 360 ​​is located at the edge of the supporting glass 341 and is connected to the edge of the first polarizer 350; the first side conductive layer 362 of the electrostatic connection structure 360 ​​is disposed on the side of the supporting glass 341, and one end of the first side conductive layer 362 is connected to the planar conductive layer 361, and the other end of the first side conductive layer 362 is connected to the edge of the black matrix 342.

[0053] In this embodiment, the electrostatic discharge path is as follows: the static electricity accumulated on the surface of the first polarizer 350 is sequentially transferred to the planar conductive layer 361 and the first side conductive layer 362, and then released to ground through the electrostatic discharge structure 370. The planar conductive layer 361 is designed to minimize interference with the first polarizer 350, thus avoiding interference between the Ag adhesive and the first polarizer 350 compared to related technologies. Therefore, this embodiment of the invention improves upon the problem of poor display quality while achieving electrostatic discharge.

[0054] Based on the above embodiments, optionally, the electrostatic discharge structure 370 includes a conductive adhesive 372, one end of which is bonded to the first side conductive layer 362 of the electrostatic connection structure 360, and the other end of which is bonded to the side surface of the array substrate 320 away from the backlight module 310.

[0055] For example, the conductive adhesive 372 is formed on the array substrate 320 by vapor deposition or printing, and extends to the side of the liquid crystal layer 330, and then to the side of the color filter substrate 350, connecting with the first side conductive layer 362. Optionally, the conductive adhesive 372 is Ag adhesive or other types of conductive adhesive.

[0056] In this embodiment, the conductive adhesive 372 does not need to climb up to the top of the first polarizer 350, and the height of the conductive adhesive 372 is lower than the height of the color filter substrate 340. This design ensures that when the optical adhesive 410 is attached to the liquid crystal display device 400, it will not interfere with the conductive adhesive 372.

[0057] Optionally, based on the above embodiments, the electrostatic discharge structure 370 further includes a conductive film 371, one end of which is bonded to the edge of the planar conductive layer 361 of the electrostatic connection structure 360, and the other end of which is bonded to the back side of the backlight module 310.

[0058] In this embodiment, there are two electrostatic discharge paths. One conductive path involves the static electricity accumulated on the surface of the first polarizer 350 being sequentially transferred to the planar conductive layer 361, the first side conductive layer 362, and the conductive adhesive 372, and finally released to ground through the array substrate 320. The other conductive path involves the static electricity accumulated on the surface of the first polarizer 350 being sequentially transferred to the planar conductive layer 361 and the conductive film 371, and finally released to ground through the backlight module 310. Therefore, this embodiment increases the number of electrostatic discharge paths, thereby further improving the electrostatic discharge effect of the liquid crystal display device.

[0059] This embodiment of the invention optimizes the height of the conductive adhesive 372 so that it is lower than the color filter substrate 340 and does not need to climb up to the first polarizer 350. At the same time, the planar conductive layer 361, the first side conductive layer 362, and the conductive film 371 of the electrostatic connection structure 360 ​​are avoided from the attachment range of the optical adhesive 410. When the optical adhesive 410 is used to attach the liquid crystal display device 400, the optical adhesive 410 only needs to be attached to the area between the first polarizer 350 and the cover glass 380. It will not interfere with the conductive adhesive 372 or the conductive film 371 arranged on the edge. This effectively avoids a series of problems caused by component interference, improves the display stability of the product, and ensures and improves the product quality.

[0060] Based on the above embodiments, please continue to refer to Figure 9 Optionally, the planar shape of the supporting glass 341 is quadrilateral; the planar conductive layer 361 of the electrostatic connection structure 360 ​​is disposed at at least two vertices of the supporting glass 341, and at the vertices, the planar conductive layer 361 of the electrostatic connection structure 360 ​​is L-shaped.

[0061] Among them, the vertex is an area where static electricity is easily accumulated. Placing the planar conductive layer 361 at the vertex can more accurately collect static electricity in these areas. The L-shaped design of the planar conductive layer 361 can fit the two adjacent edges of the vertex and avoid entering the display area 401.

[0062] Based on the above embodiments, please continue to refer to Figure 9 Optionally, the liquid crystal display device 400 includes a display area 401 and a non-display area 402.

[0063] In the non-display area 402, the cross-sectional width of the planar conductive layer 361 of the electrostatic connection structure 360 ​​is smaller than the edge width of the black matrix 342.

[0064] The fact that the cross-sectional width of the planar conductive layer 361 is smaller than the edge width of the black matrix 342 allows the planar conductive layer 361 to be completely enclosed within the coverage area of ​​the black matrix 342. This ensures that the planar conductive layer 361 will not exceed the light-shielding range of the black matrix 342 and thus not be exposed, while also relying on the structural protection of the black matrix 342 to reduce damage caused by external factors.

[0065] Based on the above embodiments, please continue to refer to Figure 9 Optionally, the planar conductive layer 361 of the electrostatic connection structure 360 ​​is parallel to the edge of the supporting glass 341.

[0066] The parallel layout allows the planar conductive layer 361 to uniformly cover the edge of the supporting glass 341, ensuring that static electricity can be uniformly conducted along the edge and improving the overall conduction stability.

[0067] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A liquid crystal display device, characterized in that, include: Backlight module; An array substrate, wherein the array substrate is disposed on one side of the backlight module; A liquid crystal layer is disposed on the side of the array substrate away from the backlight module; A color filter substrate, wherein the color filter substrate is disposed on the side of the liquid crystal layer away from the backlight module; A first polarizer is disposed on the side of the color filter substrate away from the backlight module; the first polarizer is a conductive polarizer. An electrostatic connection structure is provided, comprising a planar conductive layer and a first side conductive layer; wherein the planar conductive layer is disposed in the same layer as the first polarizer and is connected to the edge of the first polarizer; the first side conductive layer is disposed on the side of the color filter substrate and is connected to the planar conductive layer. An electrostatic discharge structure is provided, wherein one end of the electrostatic discharge structure is connected to the electrostatic connection structure, and the other end of the electrostatic discharge structure is grounded.

2. The liquid crystal display device according to claim 1, characterized in that, The color filter substrate includes a cover glass, a black matrix, and a color filter layer stacked along the direction close to the backlight module; wherein, the black matrix is ​​a conductive black matrix; the black matrix covers the edge of the cover glass; Furthermore, the first polarizer is disposed on the side of the cover glass away from the backlight module; The planar conductive layer of the electrostatic connection structure is located at the edge of the cover glass and is connected to the edge of the first polarizer; the first side conductive layer of the electrostatic connection structure is disposed on the side of the cover glass, and one end of the first side conductive layer is connected to the planar conductive layer, and the other end of the first side conductive layer is connected to the edge of the black matrix.

3. The liquid crystal display device according to claim 2, characterized in that, The electrostatic discharge structure includes a conductive film, one end of which is bonded to the edge of the black matrix, and the other end of which is bonded to the back of the backlight module.

4. The liquid crystal display device according to claim 2, characterized in that, Also includes: A second side conductive layer is disposed on the side of the array substrate, and the second side conductive layer leads the signal lines located on the front side of the array substrate to the back side of the array substrate. A flexible circuit board and a printed circuit board, wherein the printed circuit board is located on the back side of the backlight module; one end of the flexible circuit board is bonded to the back side of the array substrate and electrically connected to the second side conductive layer; the other end of the flexible circuit board is electrically connected to the printed circuit board.

5. The liquid crystal display device according to claim 1, characterized in that, The color filter substrate includes a support glass, a black matrix, and a color filter layer stacked along a direction close to the backlight module; wherein, the black matrix is ​​a conductive black matrix; the black matrix covers the edge of the support glass; The liquid crystal display device further includes a cover glass, which is located on the side of the first polarizer away from the color filter substrate; The planar conductive layer of the electrostatic connection structure is located at the edge of the supporting glass and is connected to the edge of the first polarizer; the first side conductive layer of the electrostatic connection structure is disposed on the side of the supporting glass, and one end of the first side conductive layer is connected to the planar conductive layer, and the other end of the first side conductive layer is connected to the edge of the black matrix.

6. The liquid crystal display device according to claim 5, characterized in that, The electrostatic discharge structure includes a conductive adhesive, one end of which is bonded to the first side conductive layer of the electrostatic connection structure, and the other end of which is bonded to the side surface of the array substrate away from the backlight module.

7. The liquid crystal display device according to claim 6, characterized in that, The electrostatic discharge structure also includes a conductive film, one end of which is bonded to the edge of the planar conductive layer of the electrostatic connection structure, and the other end of which is bonded to the back of the backlight module.

8. The liquid crystal display device according to any one of claims 5-7, characterized in that, The supporting glass has a quadrilateral shape; the planar conductive layer of the electrostatic connection structure is disposed at at least two vertices of the supporting glass, and at the vertices, the planar conductive layer of the electrostatic connection structure has an L-shaped shape.

9. The liquid crystal display device according to claim 8, characterized in that, The liquid crystal display device includes a display area and a non-display area; In the non-display area, the cross-sectional width of the planar conductive layer of the electrostatic connection structure is smaller than the edge width of the black matrix.

10. The liquid crystal display device according to claim 8, characterized in that, The planar conductive layer of the electrostatic connection structure is parallel to the edge of the supporting glass.

Images