Screen anti-static film, cover plate and display device
By setting a conductive layer with cross-conduction parts on the base layer of the vehicle touch screen, static electricity can be quickly discharged, solving the problem of electrostatic field interference with liquid crystal molecules and reducing the occurrence of white halo phenomenon.
Patent Information
- Application Number
- CN202422947222.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The high-resistivity film on the in-vehicle touchscreen prevents static electricity from dissipating quickly, generating a strong electrostatic field that interferes with the bias of liquid crystal molecules, resulting in a white halo phenomenon.
A conductive layer is set on the base layer. The conductive layer contains multiple intersecting conductive parts that extend to the edge to form a network structure. Static electricity is conducted to the edge through the conductive parts and grounded through the frame, reducing static electricity concentration.
It effectively reduces the probability of electrostatic field formation and decreases the occurrence of white halo phenomenon.
Smart Images
Figure CN223607198U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of display, in particular to a screen anti-static film, a cover plate and a display device. BACKGROUND
[0002] With the development of the automobile industry, automobiles gradually upgrade to safety, comfort and entertainment, and physical buttons in the car are constantly replaced by touch screens.
[0003] In order to ensure the touch effect, the current vehicle-mounted touch screen needs to set a high-resistance film on the screen body, but the high-resistance film causes the static electricity in the screen body to be unable to be discharged quickly. Since the strong static field exists for a short time, the static field interferes with the normal bias of liquid crystal molecules, so that the light is not biased to emit, thereby producing a white halo phenomenon until the static field disappears. Utility model content
[0004] The technical problem solved by the present application is to provide a screen anti-static film, a cover plate and a display device, which can reduce the probability of forming a strong static field in the screen body and reduce the white halo phenomenon.
[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide a screen anti-static film, comprising a base layer and a conductive layer; the conductive layer is arranged on one side of the base layer, and the conductive layer comprises a plurality of conductive parts arranged in intervals and intersected, and at least one of the conductive parts extends to the edge of the base layer.
[0006] Preferably, the plurality of conductive parts form a rhombic, rectangular or triangular grid structure.
[0007] Preferably, the distance between the adjacent two conductive parts is in the range of 1cm-1.5cm.
[0008] Preferably, the width of the conductive part is in the range of 0.8mm-1.2mm.
[0009] Preferably, the conductive layer further comprises a lead-out part, and the lead-out part is arranged around the plurality of conductive parts and connected with the edges of the plurality of conductive parts.
[0010] Another technical solution adopted by the present application is to provide a cover plate, comprising the screen anti-static film and the cover plate body of any one of the embodiments, the cover plate body is arranged on one side of the screen anti-static film in layers, and the conductive layer is located between the base layer and the cover plate body.
[0011] Another technical solution adopted by the present application is to provide a cover plate, comprising a cover plate body and a conductive layer; the cover plate body comprises a first cover plate layer and a second cover plate layer arranged at intervals along the thickness direction; the conductive layer is arranged between the first cover plate layer and the second cover plate layer, and the conductive layer comprises a plurality of conductive parts arranged at intervals and intersecting each other, and at least one of the conductive parts extends to the edge of the cover plate body.
[0012] Another technical solution adopted by the present application is to provide a display device, comprising the cover plate of any one of the embodiments, a screen body and a frame; the screen body is arranged on one side of the cover plate; the frame is arranged around the edge of the cover plate body; the screen anti-static film is located on the side of the cover plate body away from the screen body, and the edges of at least part of the screen anti-static film are attached to the frame.
[0013] Preferably, the edges of all the screen anti-static films are attached to the frame.
[0014] Another technical solution adopted by the present application is to provide a display device, comprising the cover plate of any one of the embodiments, a screen body and a frame; the screen body is arranged on one side of the cover plate; the frame is arranged around the edge of the cover plate, and the edge of the conductive layer is connected to the frame.
[0015] The beneficial effects of the present application are that, different from the prior art, the screen anti-static film and the cover plate provided by the present application have a conductive layer, and after the screen anti-static film is attached to the surface of the screen body, when a finger touches the screen, the static electricity of the human body is transmitted to the screen anti-static film through the finger, and since the screen anti-static film has a conductive layer and the conductive layer has a plurality of conductive parts, the static electricity can be conducted between the conductive parts and then conducted to the edge of the screen anti-static film through the conductive part extending to the edge; at the same time, since the conductive parts are arranged in intersecting manner, a network structure is formed to cover the entire screen, so that when the finger touches any position of the screen, it can be received by any conductive part and then conducted to the edge through the network of conductive parts, ensuring that the static electricity can be finally conducted outwards through the frame and other conductive structures of the display device which are grounded, thereby reducing the probability of strong static field formed by the static electricity concentrated in the screen body and the probability of white halo phenomenon caused by the static electricity of the display device. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structural schematic diagram of an embodiment of the screen anti-static film of the present application;
[0017] Figure 2 is a structural schematic diagram of various embodiments of the touch layer;
[0018] Figure 3 is a structural schematic diagram of another embodiment of the screen anti-static film of the present application;
[0019] Figure 4 is a structural schematic diagram of another embodiment of the screen anti-static film of the present application;
[0020] Figure 5 is a structural schematic diagram of another embodiment of the screen anti-static film of the present application;
[0021] Figure 6 is a structural schematic diagram of an embodiment of the cover plate of the present application;
[0022] Figure 7 is a structural schematic diagram of another embodiment of the cover plate of the present application;
[0023] Figure 8 is a structural schematic diagram of an embodiment of the display device of the present application;
[0024] Figure 9 is a structural schematic diagram of another embodiment of the display device of the present application. DETAILED DESCRIPTION
[0025] To make the objectives, technical solutions and effects of the present application clearer and more explicit, the present application is further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0026] Reference is made to Figure 1 , Figure 1 is a structural schematic diagram of an embodiment of the screen anti-static film of the present application. The screen anti-static film 10 comprises a base layer 11 and a conductive layer 12. Specifically, the base layer 11 can be a transparent scratch-proof protective film, and the material thereof can be PET (polyethylene terephthalate), which has strong scratch-proof performance and can protect the screen. Meanwhile, the material is transparent, and has little effect on the light transmission of the screen. The conductive layer 12 is arranged on one side of the base layer 11, and the conductive layer 12 comprises a plurality of conductive parts 121 arranged in an interval and intersected with each other, and at least one conductive part 121 extends to the edge of the base layer 11. Specifically, the material of the conductive layer 12 can be ITO (indium tin oxide), which has good conductive performance and is also a transparent material, and has little effect on the light transmission of the screen.
[0027] The screen anti-static film 10 provided by the application has a conductive layer 12. After the screen anti-static film 10 is attached to the surface of the screen body, when a finger touches the screen, the static electricity of the human body is transmitted to the screen anti-static film 10 through the finger. Since the screen anti-static film 10 has the conductive layer 12, the conductive layer 12 has a plurality of conductive portions 121, the static electricity can be conducted between the conductive portions 121, and then conducted to the edge of the screen anti-static film 10 through the conductive portion 121 extending to the edge. At the same time, since the conductive portions 121 are arranged in a cross manner, a network structure is formed to cover the entire screen, so that when the finger touches each position of the screen, it can be received by any conductive portion 121, and then conducted to the edge through the network conductive portion 121, so as to ensure that the static electricity can be finally conducted outwards through the grounding conductive structure such as the frame of the display device, thereby reducing the probability of the static electricity concentrating in the screen body to form a strong static field and reducing the probability of the white halo phenomenon.
[0028] It should be noted that the screen anti-static film 10 provided by the application needs to be matched with a metal frame having grounding capability or a frame having partial metal material.
[0029] Optionally, the shape of the conductive portion 121 is adapted to the shape of the touch electrode in the touch layer of the screen. Referring to Figure 2 , Figure 2 is a structural schematic diagram of various embodiments of the touch layer. The touch layer 32 includes an array of touch electrodes 321, and the shape of the touch electrode 321 can be a rhombus, a strip or a triangle. When a finger touches the screen, the capacitance of the screen body changes, and the touch coordinates are determined according to the position of the capacitance change. Since the finger touches the screen at the same time, the static electricity is conducted in the conductive layer 12. In order to reduce the influence of the conductive layer 12 on the touch function, the conductive portion 121 of the application extends along the edge of the touch electrode 321, thereby reducing the overlapping area of the conductive portion 121 and the touch electrode 321.
[0030] In an embodiment, referring to Figure 1 , when the shape of the touch electrode 321 is a rhombus as shown in (a) of Figure 2 , a plurality of conductive portions 121 form a rhombic grid structure, that is, four conductive portions 121 form a rhombic hollow space, and a plurality of touch electrodes 321 can be arranged in the hollow space, thereby reducing the overlapping area of the touch electrode 321 and the conductive portion 121.
[0031] In another embodiment, referring to Figure 3 , Figure 3 is a structural schematic diagram of another embodiment of the screen anti-static film of the application. When the shape of the touch electrode 321 is a triangle as shown in (a) of Figure 2When the bar shape in (b) is a rectangle, the plurality of conductive portions 121 form a rectangular grid structure, i.e., the conductive portions 121 extend along the bar-shaped gap between two adjacent touch electrodes 321, thereby reducing the overlapping area between the touch electrodes 321 and the conductive portions 121.
[0032] In another embodiment, referring to Figure 4 , Figure 4 is a structural schematic diagram of another embodiment of the screen anti-static film of the present application. When the shape of the touch electrode 321 is as shown in Figure 2 When the triangle shape in (c) is a triangle, the plurality of conductive portions 121 form a triangular grid structure, i.e., three conductive portions 121 enclose a triangular hollow space, and a plurality of touch electrodes 321 can be arranged in the hollow space, thereby reducing the overlapping area between the touch electrodes 321 and the conductive portions 121.
[0033] In the above embodiment, each conductive portion 121 extends to the edge of the base layer 11, which can more quickly conduct the static electricity outward, thereby further improving the anti-static capability of the screen. In other embodiments, only one or more conductive portions 121 can extend to the edge of the base layer 11.
[0034] In the above embodiment, the intervals between the conductive portions 121 are uniformly distributed to ensure uniform distribution of the static electricity conduction capability on the screen. In other embodiments, the intervals between different adjacent conductive portions 121 can be different.
[0035] Optionally, the distance between two adjacent conductive portions 121 ranges from 1 cm to 1.5 cm. Since the width of a human finger is about 1 cm, this interval ensures that the static electricity on the finger can be transmitted to at least any conductive portion 121 regardless of the position of the finger on the screen, and the influence of the conductive portion 121 on the touch function is minimized. Specifically, the width of the conductive portion 121 ranges from 0.8 mm to 1.2 mm (e.g., 0.9 mm, 1 mm, or 1.1 mm, etc.), which ensures that the conductive portion 121 has sufficient static electricity conduction capability.
[0036] Optionally, in another embodiment, referring to Figure 5 , Figure 5 is a structural schematic diagram of another embodiment of the screen anti-static film of the present application. In this embodiment, the conductive layer 12 further includes a conductive portion 132, which is arranged outside the plurality of conductive portions 121 and connected to the edges of the plurality of conductive portions 121. Specifically, the material of the conductive portion 132 can be the same as that of the conductive portions 121, e.g., both can be ITO, and the conductive portion 132 is used to improve the speed of conducting the static electricity outward, to ensure that the conductive portion 132 has sufficient contact area with the frame that can be grounded, and to more quickly conduct the static electricity to the frame. Specifically, the width of the conductive portion 132 can range from 3 mm to 5 mm (e.g., 4 mm, etc.).
[0037] The screen anti-static film 10 of the present application can be formed by coating a conductive material on the base layer 11.
[0038] Referring to Figure 6 , Figure 6 is a structural schematic diagram of an embodiment of the cover plate of the present application. The embodiment of the present application also provides a cover plate 20 comprising the screen anti-static film 10 of any of the above embodiments and a cover plate body 21, the cover plate body 21 being arranged on one side of the screen anti-static film 10, and the conductive layer 12 being located between the base layer 11 and the cover plate body 21. Specifically, the material of the cover plate body 21 can be glass, and the screen anti-static film 10 is attached to the cover plate body 21 with the conductive layer 12, so that the base layer 11 is located at the outermost layer of the display device, which can protect the screen and the conductive layer 12 from being damaged.
[0039] After the screen anti-static film 10 is attached to the surface of the cover plate body 21, when the finger touches the screen, the static electricity of the human body is transmitted to the screen anti-static film 10 through the finger, and the static electricity can be conducted between the conductive parts 121, and then conducted to the edge of the screen anti-static film 10 through the conductive part 121 extending to the edge, so as to ensure that the static electricity can finally be conducted outward through the conductive structure such as the frame of the display device, thereby reducing the probability of forming a strong static field in the screen body due to the concentration of static electricity, and reducing the probability of generating white halo phenomenon.
[0040] Optionally, referring to Figure 6 In the embodiment, at least one edge of the screen anti-static film 10 extends beyond the edge of the cover plate body 21, so that the conductive layer 12 in the screen anti-static film 10 can extend beyond the edge of the cover plate body 21, thereby increasing the area of the lap joint of the conductive layer 12 and the frame outside the cover plate body 21, and ensuring the static electricity conducting capability. Further, the four edges of the screen anti-static film 10 extend beyond the four edges of the cover plate body 21, further increasing the lap joint area and ensuring the static electricity conducting capability. Specifically, the edge of the screen anti-static film 10 exceeds the width of the cover plate body 21 by 3mm-5mm (for example, 4mm, etc.).
[0041] Referring to Figure 7 , Figure 7This is a schematic diagram of another embodiment of the cover plate of this application. Embodiments of this application also provide another cover plate 20, including a cover plate body 21 and a conductive layer 12. The cover plate body 21 includes a first cover plate layer 211 and a second cover plate layer 212 spaced apart along the thickness direction. Specifically, both the first cover plate layer 211 and the second cover plate layer 212 can be made of glass. The conductive layer 12 is disposed between the first cover plate layer 211 and the second cover plate layer 212. The conductive layer 12 includes multiple spaced and intersecting conductive portions 121, at least one of which extends to the edge of the cover plate body 21.
[0042] In this embodiment, the conductive layer 12 is embedded in the cover plate body 21. When a finger touches the screen, the static electricity of the human body is transferred to the conductive layer 12 through the finger. The static electricity can be conducted between the conductive parts 121, and then conducted to the edge of the screen antistatic film 10 through the conductive parts 121 extending to the edge. This ensures that the static electricity can be discharged outward through the grounded conductive structure such as the frame of the display device, thereby reducing the probability of static electricity accumulating in the screen and forming a strong electrostatic field, and reducing the probability of producing a white halo phenomenon. The first cover plate layer 211 and the second cover plate layer 212 of this application can serve as the base layer 11 of the conductive layer 12, and at the same time can protect the conductive layer 12 from damage.
[0043] See Figure 8 This application also provides a display device 100, including the above-described... Figure 6 The cover plate 20 shown also includes a screen body 30 and a frame 40. The screen body 30 is stacked on one side of the cover plate 20. Specifically, the screen body 30 includes a polarizing layer 36, a high-resistivity film 35, a color filter layer 34, a liquid crystal layer 33, a touch layer 32, and a TFT substrate 31, which are stacked sequentially along the thickness direction. The touch layer 32 includes multiple touch electrodes 321, such as... Figure 2 As shown. A frame 40 is arranged around the edge of the cover plate body 21. The screen antistatic film 10 is located on the side of the cover plate body 21 opposite to the screen body 30. At least a portion of the edge of the screen body 30's antistatic film is attached to the upper surface of the frame 40. Optionally, all edges of the screen body 30's antistatic film are attached to the upper surface of the frame 40. Specifically, the frame 40, at least partially attached to the screen body 30's antistatic film, is made of metal and has conductive grounding capability; the frame 40 can also be entirely made of metal. As can be seen from the arrows in the figure, static electricity is conducted from the finger through the conductive layer 12 of the cover plate 20 to the edge, and then discharged through the frame 40 to ground.
[0044] See Figure 9 This application also provides another display device 100, including the above-described display as follows: Figure 7The cover plate 20 shown further comprises a screen body 30 and a frame 40; the screen body 30 is arranged in a stack on one side of the cover plate 20; the frame 40 is annularly arranged on the edge of the cover plate 20, and the edge of the conductive layer 12 is connected with the inner wall of the frame 40. As can be seen from the arrow in the figure, static electricity is conducted from the finger to the edge of the conductive layer 12 of the cover plate 20, and then conducted to the ground through the frame 40.
[0045] The display device 100 provided in the present application can be a mobile phone, a tablet computer, or a vehicle-mounted display device, etc.
[0046] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A screen antistatic film characterized by, The screen anti-static film comprises: a base layer; a conductive layer arranged on one side of the base layer, the conductive layer comprising a plurality of conductive sections arranged in intervals and intersections, at least one of the conductive sections extending to the edge of the base layer.
2. The screen anti-static film according to claim 1, wherein the plurality of conductive sections form a rhombic, rectangular or triangular grid structure.
3. The screen anti-static film according to claim 2, wherein the distance between two adjacent conductive sections ranges from 1 cm to 1.5 cm.
4. The screen anti-static film according to claim 2, wherein the width of the conductive sections ranges from 0.8 mm to 1.2 mm.
5. The screen anti-static film according to claim 1, wherein the conductive layer further comprises a lead-out section, the lead-out section being annularly arranged outside the plurality of conductive sections and connected to the edges of the plurality of conductive sections.
6. A cover plate characterized by comprises: the screen anti-static film according to any one of claims 1-5; a cover plate body arranged in layers on one side of the screen anti-static film, the conductive layer being arranged between the base layer and the cover plate body.
7. A cover plate characterized by comprises: a cover plate body, the cover plate body comprising a first cover plate layer and a second cover plate layer arranged in intervals along the thickness direction; a conductive layer arranged between the first cover plate layer and the second cover plate layer, the conductive layer comprising a plurality of conductive sections arranged in intervals and intersections, at least one of the conductive sections extending to the edge of the cover plate body.
8. A display device, characterized by comprising: comprises: the cover plate according to claim 6; a screen body arranged in layers on one side of the cover plate; a frame annularly arranged at the edge of the cover plate body; the screen anti-static film is arranged on the side of the cover plate body facing away from the screen body, and at least part of the edges of the screen anti-static film are attached to the frame.
9. The display device according to claim 8, wherein the edges of all the screen anti-static films are attached to the frame.
10. A display device, characterized by comprising: comprises: the cover plate according to claim 7; a screen body arranged in layers on one side of the cover plate; a frame annularly arranged at the edge of the cover plate, the edges of the conductive layer being connected to the frame.