Jig for coating waterproof agent for binding position of touch screen
By designing a coating fixture and using the structure of the limit smear and positioning column, the problem of the on-board touch screen waterproofing agent cannot be fixed, and the setting of the waterproofing agent in the fixed area is achieved and the process stability of the process is improved.
Patent Information
- Application Number
- CN202421506608.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the GG DI TO structure of the touch screen for on-board vehicles, due to the insulating oil being tied and positioned and hollowed out, there is a local gap with the insulating oil after FPC binding, and the silver paste is exposed to moisture and oxidation, and the waterproofing agent cannot be fixed, resulting in unstable process.
A coating fixture is designed, including a base plate, a positioning profiling groove, a finger air-avoiding groove, a coating area, etc. The coating area is composed of a limit smear and a positioning column. The limit smear is equipped with a coating hole for shaping and applying a waterproofing agent.
By using this coating fixture, the waterproofing agent can be shaped in the fixed area and will not expand at will, ensuring the surface energy of the double-sided adhesive area of the adhesion frame and improving process stability.
Smart Images
Figure CN222984815U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of touch screens, and more specifically, to a fixture for coating a waterproof agent on the binding and positioning of a touch screen. Background Art
[0002] Currently, there is a GG DI TO structure for in-vehicle touch screens. As the name implies, the touch screen with a DI TO structure has I TO functional surfaces on both the front and back sides of the same piece of glass, with wiring on both sides. The wiring process is usually screen-printing silver paste lines, and the silver paste lines are covered and protected with insulating oil. The functional layers on the front and back sides are connected to the IC through FPC binding to achieve the touch control function. However, due to the need to reserve the silver paste for binding and positioning the FPC, the insulating oil will be hollowed out during binding and positioning. Affected by assembly tolerances, there will be local gaps between the FPC and the insulating oil after binding. The silver paste in this gap is exposed, and oxidation will occur after being exposed to moisture, resulting in defects such as short circuits and open circuits. Therefore, it is necessary to apply a waterproof agent (fluorinated liquid) at this binding and positioning point. However, since the waterproof agent is usually very thin and has strong fluidity and expansibility, the coated area cannot be shaped after manual coating of the waterproof agent, and the waterproof agent will spread to the bonding area of the frame-mounted double-sided tape, making it impossible for the double-sided tape to be properly bonded to the glass and affecting the process stability. Therefore, there is an urgent need for a shaping coating fixture to assist in coating the waterproof agent. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a coating fixture for coating a waterproof agent on the binding and positioning of a touch screen, so that the coated waterproof agent can be shaped in a fixed area and will not spread randomly, thereby ensuring the surface energy of the area where the adhesive frame-mounted double-sided tape is adhered.
[0004] Specifically, the technical solution of the utility model is as follows: A fixture for coating a waterproof agent on the binding and positioning of a touch screen is proposed, which includes a bottom plate. The bottom plate is provided with a positioning profiling groove for placing the touch screen. Finger clearance grooves are arranged around the positioning profiling groove. A coating area is provided at the lower end of the positioning profiling groove. The coating area includes a limiting coating sheet and positioning posts. The limiting coating sheet is provided with coating holes, and positioning post holes are provided at both ends of the limiting coating sheet. The positioning posts can be fixed by passing through the positioning post holes.
[0005] As a preferred technical solution, finger clearance grooves are provided at both ends of the coating area.
[0006] As a preferred technical solution, the bottom plate is a bakelite board or an acrylic board.
[0007] As a preferred technical solution, the positioning posts are made of stainless steel.
[0008] As a preferred technical solution, the limiting coating sheet is a PET or acrylic board with a thickness of 0.1 - 0.5 mm.
[0009] As a preferred technical solution, the positioning profiling groove is a groove body surrounded by multiple protrusions.
[0010] As a preferred technical solution, a silica gel layer is provided at the edge where the plurality of protrusions contact the touch screen.
[0011] As a preferred technical solution, the finger clearance groove is a concave groove.
[0012] As a preferred technical solution, the coating area further includes a groove for accommodating the FPC bonded to the touch screen, and the groove is provided below the limiting coating film.
[0013] As a preferred technical solution, the coating hole is an elongated hole.
[0014] The beneficial effects of the present utility model are as follows: When using this jig for coating the waterproof agent for touch screen binding and positioning, after effectively positioning the touch screen, positioning coating is carried out, so that the coated waterproof agent can be shaped in a fixed area and will not spread randomly, thereby ensuring the surface energy of the double-sided adhesive area of the adhesion frame. Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0016] Figure 1 It is a top view structural schematic diagram of a coating jig for coating the waterproof agent for touch screen binding and positioning proposed in this embodiment;
[0017] Figure 2 It is a 45° structural schematic diagram of a coating jig for coating the waterproof agent for touch screen binding and positioning proposed in this embodiment.
[0018] Explanation of the reference numerals in the drawings: bottom plate 1; positioning profiling groove 2; protrusion 21; finger clearance groove 3; coating area 4; limiting coating film 5; coating hole 51; positioning column 6; groove 7. Detailed Embodiments
[0019] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art.
[0020] In addition, the described features, structures, or characteristics may be combined in any suitable manner in the first or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.
[0021] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.
[0022] The flowcharts shown in the drawings are only illustrative and do not necessarily include all the content and operations / steps, nor are they necessarily executed in the described order. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to the actual situation.
[0023] It should be noted that: "a plurality" mentioned in this article refers to two or more.
[0024] Example 1
[0025] As Figure 1-2 shown, this embodiment proposes a jig for coating a waterproof agent on a touch screen binding position, including a bottom plate 1. The bottom plate 1 is provided with a positioning profiling groove 2 for placing the touch screen. Finger clearance grooves 3 are arranged around the positioning profiling groove 2. A coating area 4 is provided at the lower end of the positioning profiling groove 2. The coating area 4 includes a limit coating sheet 5 and positioning posts 6. The limit coating sheet 5 is provided with coating holes 51, and the coating holes 51 are long holes. Positioning post holes are provided at both ends of the limit coating sheet 5, and the positioning posts 6 can be fixed by passing through the positioning post holes.
[0026] Among them, preferably, the positioning posts 6 can be made of stainless steel. The bottom plate 1 is a bakelite plate or an acrylic plate. The limit coating sheet 5 is a PET or acrylic plate with a thickness of 0.1 - 0.5 mm.
[0027] Preferably, the positioning profiling groove 2 can be a groove body surrounded by a plurality of protrusions 21. Of course, it can also be a groove body with a concave setting. The appearance and size of the groove body have the same appearance and size as the touch screen and can accommodate the touch screen. Further preferably, a silicone layer is provided at the edge where the plurality of protrusions 21 contact the touch screen. When the touch screen is placed, the edge is protected from damage.
[0028] Preferably, finger clearance grooves 3 are provided at both ends of the coating area 4, which are used to facilitate the placement and removal of the touch screen. Further, as shown in the figure, the finger clearance groove 3 is a concave groove. In short, the depth of the groove body of the finger clearance groove 3 is lower than that of the positioning profiling groove 2, so as to achieve the effect of convenient handling.
[0029] Preferably, the coating area 4 further includes a groove 7 for accommodating the FPC bound to the touch screen, and the groove 7 is provided below the limiting smear 5. That is, during binding, first place the touch screen into the positioning profiling groove 2 with the binding position facing up, then place the FPC, and finally fix the limiting smear 5 on the positioning post 6. After pressing, use a cotton swab soaked with waterproof agent to smear the coating holes 51 full, and after standing for a few seconds, when the waterproof agent has initially dried on the surface, the limiting smear 5 can be removed to complete the coating process.
[0030] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A jig for applying a waterproof agent to a touch screen binding position, characterized in that: The invention comprises a bottom plate, wherein the bottom plate is provided with a positioning profiling groove for placing the touch screen, finger avoidance grooves are arranged around the positioning profiling groove, a coating area is arranged at the lower end of the positioning profiling groove, the coating area comprises a limiting smear and a positioning column, the limiting smear is provided with a coating hole, positioning column holes are arranged at both ends of the limiting smear, and the positioning column can be fixed by passing through the positioning column holes.
2. A jig for coating a waterproof agent at a touch screen binding position according to claim 1, characterized in that: Finger-avoiding grooves are arranged at both ends of the coating area.
3. The jig for coating a waterproof agent at a touch screen binding position according to claim 1, characterized in that: The bottom plate is a bakelite material plate or an acrylic plate.
4. The jig for coating a waterproof agent at a touch screen binding position according to claim 1, characterized in that: The positioning column is made of stainless steel.
5. The jig for coating a waterproof agent at a touch screen binding position according to claim 1, characterized in that: The limiting smear is a PET or acrylic plate with a thickness of 0.1-0.5 mm.
6. The jig for coating a waterproof agent at a touch screen binding position according to claim 1, characterized in that: The positioning contour groove is a groove body surrounded by a plurality of protrusions.
7. The jig for coating a waterproof agent at a touch screen binding position according to claim 6, characterized in that: A silicone layer is provided at the edges of the plurality of protrusions that contact the touch screen.
8. The jig for coating a waterproof agent at a touch screen binding position according to claim 1, characterized in that: The finger avoidance groove is a concave groove body.
9. The jig for coating a waterproof agent at a touch screen binding position according to claim 1, characterized in that: The coating area further includes a groove for accommodating the FPC bound to the touch screen, and the groove is arranged below the limiting coating film.
10. A jig for coating a waterproof agent at a touch screen binding position according to any one of claims 1 to 9, characterized in that: The coating hole is an elongated hole.