Anti-static liquid crystal display screen
By setting silver paste pad and conductive double-sided adhesive on the upper and lower surfaces of the lower substrate of the liquid crystal display module, and connecting it with the conductive light shielding glue to form a conductive path, the damage to FPC and lower during the electrostatic release process of the traditional liquid crystal display module is solved. The problem of the internal circuit of the substrate achieves fast and safe electrostatic discharge.
Patent Information
- Application Number
- CN202420276784.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-02-04
AI Technical Summary
During the electrostatic release process, traditional LCD display modules are prone to damage the FPC and the internal circuits of the lower substrate, resulting in poor functions.
By setting silver paste pad on the upper and lower surfaces of the lower substrate and setting conductive double-sided adhesive on the lower surface, combining conductive light shielding glue with the lower iron frame to form a conductive path, so that static electricity directly passes through the silver paste pad, conductive double-sided adhesive and conductive light shielding glue, the conductive light shielding glue is directly connected to the silver paste pad, conductive double-sided adhesive and conductive light shielding glue Pass it out to avoid passing through the FPC line and achieve rapid electrostatic discharge.
It effectively avoids damage to the internal circuits of the substrate under the FPC and its connected liquid crystal display during the electrostatic release process. The electrostatic release speed is faster, and the large-area contact conduction of different materials is transmitted, reducing the risk of damage.
Smart Images
Figure CN222189641U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to an anti-static liquid crystal display screen. Background Art
[0002] Static electricity is the bane of mobile phone display modules. When static electricity accumulates too much or encounters static electricity with overload voltage instantly, other signal lines cannot be quickly drained away, resulting in short circuits, black screens, display abnormalities and other malfunctions.
[0003] In the traditional solution, when static electricity is generated on the surface of the LCD module, the static electricity begins to be released from the low-resistance film plated on the upper glass. The static electricity release path is static electricity generation, low-resistance film, silver paste, lower glass, and the internal coating circuit of the lower glass to reach the GND layer of the FPC bound to the single-layer area of the lower substrate. The static electricity flows from the internal circuit of the FPC to the backlight lower iron frame. The conductive foam on the backlight lower iron frame contacts the entire machine casing, thereby releasing the static electricity from the entire machine casing.
[0004] One of the links in this solution is that static electricity needs to be released through the FPC circuit. Since the circuits on the FPC are dense and it is bound to the lower substrate of the LCD screen, it is also easy to conduct static electricity into the LCD screen. This structure has the risk of damaging the internal circuits of the FPC and the internal circuits of the LCD screen. Utility Model Content
[0005] The technical problem to be solved by the utility model is how to quickly conduct static electricity without damaging the FPC and the lower substrate.
[0006] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0007] In order to solve the above technical problems, the utility model provides an anti-static liquid crystal display screen, which includes a backlight module, a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top, the lower substrate is longer than the upper substrate and extends outward to form a single-layer area, the upper and lower surfaces of the lower substrate located in the single-layer area are both provided with silver paste pads, the lower polarizer is shorter than the lower substrate to form a retracted portion, the lower surface of the lower substrate located in the retracted portion is provided with a conductive double-sided adhesive, the bottom layer of the backlight module is provided with a lower iron frame, and light-shielding glue is pasted between the upper surface of the backlight module and the lower polarizer and the conductive double-sided adhesive, the light-shielding glue extends to the lower surface of the lower iron frame, and the light-shielding glue is a conductive light-shielding glue.
[0008] As a preferred embodiment of the anti-static liquid crystal display provided by the utility model, a protrusion is provided on the edge of the upper surface of the lower substrate extending outward, and a buffer glue is provided on the upper surface of the lower substrate between the protrusion and the upper substrate, and the buffer glue abuts against the cover plate.
[0009] As a preferred implementation of the anti-static liquid crystal display screen provided by the utility model, the upper surface of the protrusion is flush with the upper surface of the upper substrate.
[0010] As a preferred implementation of the antistatic liquid crystal display screen provided by the utility model, the buffer glue is silicone glue.
[0011] As a preferred implementation of the anti-static liquid crystal display screen provided by the utility model, a rounded corner is arranged between the protrusion and the lower substrate.
[0012] As a preferred implementation of the antistatic liquid crystal display screen provided by the utility model, the upper surface of the lower substrate and the side surfaces of the protrusions are rough surfaces.
[0013] As a preferred embodiment of the anti-static liquid crystal display screen provided by the utility model, a plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.
[0014] As a preferred implementation of the anti-static liquid crystal display screen provided by the utility model, the shape of the groove is square or circular.
[0015] As a preferred implementation of the anti-static liquid crystal display screen provided by the utility model, the shape of the groove is square or circular.
[0016] As a preferred implementation of the anti-static liquid crystal display screen provided by the utility model, the cross-sectional shape of the groove is an isosceles trapezoid.
[0017] The utility model has the following beneficial effects:
[0018] Since silver paste pads are provided on the upper and lower surfaces of the lower substrate, and conductive double-sided adhesive is provided on the lower surface of the lower substrate, conductive shading glue is pasted under the conductive double-sided adhesive, that is, the conductive double-sided adhesive is electrically connected to the silver paste pad and the conductive shading glue on the lower surface of the lower substrate respectively, so that static electricity can be transmitted through the silver paste pad, the conductive double-sided adhesive and the conductive shading glue via the lower iron frame, so that static electricity does not need to pass through the FPC to reach the backlight lower iron frame, thereby avoiding the risk of damage to the internal circuits of the FPC and the connected LCD lower substrate during static electricity release; and this path is conducted through direct large-area contact between different materials, and the static electricity release speed is faster. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0020] Figure 1 The utility model provides a schematic structural diagram of an anti-static liquid crystal display screen.
[0021] Figure 2 This is a schematic diagram of the structure of Example 2.
[0022] Figure 3 This is a schematic diagram of the structure of Example 3.
[0023] Figure 4 for Figure 3 Schematic diagram of the decomposition structure.
[0024] Figure 5 for Figure 3 Schematic diagram of the improved structure.
[0025] Description of Figure Numbers:
[0026] Backlight module 100; lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; cover plate 5; silver paste pad 21; conductive double-sided adhesive 6; lower iron frame 7; light shielding glue 8;
[0027] Protrusion 22; Buffer rubber 23;
[0028] Plastic layer 9; groove 51. DETAILED DESCRIPTION
[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0031] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0032] The utility model provides an anti-static liquid crystal display screen, which comprises a backlight module, a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are sequentially stacked from bottom to top, wherein the lower substrate is longer than the upper substrate and extends outward to form a single-layer area, the upper surface and the lower surface of the lower substrate located in the single-layer area are both provided with silver paste pads, the lower polarizer is shorter than the lower substrate to form a retracted portion, the lower surface of the lower substrate located in the retracted portion is provided with a conductive double-sided adhesive, the bottom layer of the backlight module is provided with a lower iron frame, light-shielding adhesive is pasted between the upper surface of the backlight module and the lower polarizer and the conductive double-sided adhesive, the light-shielding adhesive extends to the lower surface of the lower iron frame, and the light-shielding adhesive is a conductive light-shielding adhesive.
[0033] Since silver paste pads are provided on the upper and lower surfaces of the lower substrate, and conductive double-sided adhesive is provided on the lower surface of the lower substrate, conductive shading glue is pasted under the conductive double-sided adhesive, that is, the conductive double-sided adhesive is electrically connected to the silver paste pad and the conductive shading glue on the lower surface of the lower substrate respectively, so that static electricity can be transmitted through the silver paste pad, the conductive double-sided adhesive and the conductive shading glue via the lower iron frame, so that static electricity does not need to pass through the FPC to reach the backlight lower iron frame, thereby avoiding the risk of damage to the internal circuits of the FPC and the connected LCD lower substrate during static electricity release; and this path is conducted through direct large-area contact between different materials, and the static electricity release speed is faster.
[0034] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.
[0035] Example 1
[0036] See also Figure 1 , is an anti-static liquid crystal display screen provided by the utility model, which includes a backlight module 100, a lower polarizer 1, a lower substrate 2, an upper substrate 3, an upper polarizer 4 and a cover plate 5 which are sequentially stacked from bottom to top, the lower substrate 2 is longer than the upper substrate 3 and extends outward to form a single-layer area, the upper and lower surfaces of the lower substrate 2 located in the single-layer area are both provided with silver paste pad21, the lower polarizer 1 is shorter than the lower substrate 2 to form a retracted portion, the lower surface of the lower substrate 2 located in the retracted portion is provided with a conductive double-sided adhesive 6, the bottom layer of the backlight module 100 is provided with a lower iron frame 7, and a shading glue 8 is pasted between the upper surface of the backlight module 100 and the lower polarizer 1 and the conductive double-sided adhesive 6, the shading glue 8 extends to the lower surface of the lower iron frame 7, and the shading glue 8 is a conductive shading glue 8. Since silver paste pads 21 are provided on the upper and lower surfaces of the lower substrate 2, and a conductive double-sided adhesive 6 is provided on the lower surface of the lower substrate 2, a conductive shading adhesive 8 is pasted under the conductive double-sided adhesive 6, that is, the conductive double-sided adhesive 6 is electrically connected to the silver paste pad 21 and the conductive shading adhesive 8 on the lower surface of the lower substrate 2 respectively, so that static electricity can be transmitted through the silver paste pad 21, the conductive double-sided adhesive 6, and the conductive shading adhesive 8 via the lower iron frame 7. In this way, static electricity does not need to pass through the FPC to reach the backlight lower iron frame 7, thereby avoiding the risk of damage to the internal circuits of the FPC and the connected liquid crystal display lower substrate 2 during the static electricity release process; and this path is all through direct large-area contact conduction between different materials, and the static electricity release speed is faster.
[0037] Example 2
[0038] See also Figure 2As a further optimization scheme of Example 1, in this embodiment, a protrusion 22 is provided on the edge of the upper surface of the lower substrate 2 extending outward, and a buffer glue 23 is provided on the upper surface of the lower substrate 2 between the protrusion 22 and the upper substrate 3, and the buffer glue 23 abuts against the cover plate 5. Since the edge of the lower substrate 2 is provided with a protrusion 22, the protrusion 22 can limit the flow of the buffer glue 23, so that the shape of the buffer glue 23 is easy to control, and there will be no overflow of glue or incomplete glue dispensing. Thereby preventing the LCD screen from being unable to be assembled with the casing. In addition, the problem of poor buffering effect caused by incomplete glue dispensing and easy rupture of the lower substrate 2 is avoided, and the LCD screen is prevented from displaying abnormally.
[0039] Furthermore, the upper surface of the protrusion 22 is flush with the upper surface of the upper substrate 3 to further limit the flow of the buffer glue 23, so that the shape of the buffer glue 23 is easy to control without overflowing glue or incomplete glue dispensing.
[0040] Furthermore, the buffer glue 23 is silicone glue.
[0041] Furthermore, a chamfer is provided between the protrusion 22 and the lower substrate 2 so that the buffer glue 23 can more easily fill the space between the protrusion 22 on the upper surface of the lower substrate 2 and the upper substrate 3. The protrusion 22 with a chamfer can make the buffer glue 23 flow more smoothly into the space between the protrusion 22 on the upper surface of the lower substrate 2 and the upper substrate 3, making it less likely for bubbles to appear.
[0042] Furthermore, the upper surface of the lower substrate 2 and the side surfaces of the protrusions 22 are rough surfaces to improve the fixing effect of the buffer glue 23 .
[0043] Furthermore, the rough surface is a frosted surface or a diamond knurling surface to further improve the fixing effect of the buffer glue 23.
[0044] Example 3
[0045] See also Figures 3 to 5As a further optimization scheme of Example 1, in this embodiment, the upper surface of the cover plate 5 is covered with a plastic layer 9, and a plurality of grooves 51 are formed downward on the upper surface of the cover plate 5 by etching, and a portion of the lower surface of the plastic layer 9 is embedded in each groove 51. Since the surface of the groove 51 formed by etching has a certain degree of roughness, the plastic layer 9 can be tightly bonded to the groove 51 to prevent the cover plate 5 and the plastic layer 9 from falling off. Since the upper part of the cover plate 5 is covered with a plastic layer 9, and a plurality of grooves 51 are formed on the upper surface of the cover plate 5 by etching, and the plastic layer 9 can be embedded in the interior of the plurality of grooves 51, the grooves 51 formed by etching make the inner surface of the grooves 51 have a certain degree of roughness, and the surface of the grooves 51 with a certain degree of roughness can improve the bonding force between the grooves 51 and the plastic layer 9, thereby reducing the possibility of separation of the grooves 51 and the plastic layer 9. When the LCD screen is hit or falls, the plastic layer 9 on the upper surface of the cover plate 5 can directly withstand the external force, thereby preventing the external force from directly acting on the cover plate 5. Since the plastic layer 9 can absorb most of the energy, the remaining external force is very weak when it acts on the cover plate 5, thereby effectively reducing the risk of the cover plate 5 being broken or damaged; and when the LCD screen is subjected to external force, even if the external force is large, it will only damage the plastic layer 9 on the upper surface of the cover plate 5, and will not directly damage the cover plate 5, thereby preventing the cover plate 5 from being damaged and causing the LCD screen to be unable to be used normally, thereby bringing a better user experience to the user and improving the anti-fall ability of the LCD screen.
[0046] Furthermore, the shape of the groove 51 can be square or circular, and the cross-sectional shape of the groove 51 can be a closing groove that is narrow on the outside and wide on the inside. In the present embodiment, the cross-sectional shape of the groove 51 is an isosceles trapezoid, and the groove 51 is in the shape of an elongated strip. The isosceles trapezoid-shaped groove 51 can allow the plastic layer 9 to be tightly embedded in the groove 51, thereby preventing the groove 51 from being separated from the plastic layer 9, thereby preventing the cover plate 5 from falling off from the plastic layer 9. The elongated groove 51 can increase the fitting portion between the plastic layer 9 and the groove 51, thereby increasing the fitting strength between the groove 51 and the plastic layer 9.
[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0048] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. An anti-static liquid crystal display screen, characterized in that: It includes a backlight module, a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a single-layer area. The upper and lower surfaces of the lower substrate located in the single-layer area are both provided with silver paste pads. The lower polarizer is shorter than the lower substrate to form a retracted portion. The lower surface of the lower substrate located in the retracted portion is provided with a conductive double-sided adhesive. The bottom layer of the backlight module is provided with a lower iron frame. Shading glue is pasted between the upper surface of the backlight module and the lower polarizer and the conductive double-sided adhesive. The shading glue extends to the lower surface of the lower iron frame. The shading glue is a conductive shading glue.
2. The antistatic liquid crystal display screen according to claim 1, characterized in that: A protrusion is arranged on the edge of the upper surface of the lower substrate extending outward, and a buffer glue is arranged on the upper surface of the lower substrate between the protrusion and the upper substrate, and the buffer glue abuts against the cover plate.
3. The antistatic liquid crystal display screen according to claim 2, characterized in that: An upper surface of the protrusion is flush with an upper surface of the upper substrate.
4. The antistatic liquid crystal display screen according to claim 2, characterized in that: The buffer glue is silicone glue.
5. The antistatic liquid crystal display screen according to claim 2, characterized in that: A rounded corner is arranged between the protrusion and the lower substrate.
6. The antistatic liquid crystal display screen according to claim 2, characterized in that: The upper surface of the lower substrate and the side surfaces of the protrusion are rough surfaces.
7. The antistatic liquid crystal display screen according to claim 1, characterized in that: A plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.
8. The antistatic liquid crystal display screen according to claim 7, characterized in that: The shape of the groove is square or circular.
9. The antistatic liquid crystal display screen according to claim 7, characterized in that: The shape of the groove is square or circular.
10. The antistatic liquid crystal display screen according to claim 9, characterized in that: The cross-sectional shape of the groove is an isosceles trapezoid.