A segmented frame-mounted foam dustproof stepped structure
By using a segmented frame-mounted foam structure and a stepped connection design, combined with protective film protection, the problem of insufficient dust and water resistance caused by gaps after the frame-mounted foam is bonded is solved, achieving higher waterproof and dustproof effects and transportation protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI LIANCHUANG (WANNIAN) ELECTRONICS CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-06-30
AI Technical Summary
Existing frame foam tends to leave straight gaps after bonding, allowing dust and moisture to enter and reducing the dustproof and waterproof performance of the touch screen.
It adopts a segmented frame-mounted foam structure, and connects to the silicone block in a stepped manner through the interface. It combines the touch flexible circuit board and ribbon cable to transmit signals, and uses a protective film to protect the touch screen before installation to ensure effective adhesion and protection of the foam adhesive during bonding.
It improves the waterproof and dustproof performance of the connection structure, reducing the risk of scratches and damage during transportation and installation.
Smart Images

Figure CN224436715U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display technology, and in particular to a frame-mounted foam. Background Technology
[0002] Existing mobile phone screen bonding technologies are mainly divided into full lamination and frame-adhesive lamination. Frame-adhesive lamination involves bonding the LCM (Liquid Crystal Display Module, LCD display module) and TP (touch panel) / CG (cover glass) together using a U-shaped foam with double-sided adhesive.
[0003] During the application process, the applicant discovered a Chinese patent for "frame-mounted foam" with application number "CN201720599245.X". This patent mainly uses a fixed frame-mounted structure. When the frame-mounted foam is used, the fixed frame-mounted structure leaves straight gaps at the four corners after it is attached, which can easily allow dust to enter and reduce the dust and water resistance of the touch screen.
[0004] To address this, we propose a segmented frame-mounted foam dustproof stepped structure. Utility Model Content
[0005] This utility model provides a segmented frame-mounted foam dustproof stepped structure. Before use, the connection point is connected to the touchscreen, and the interface can be connected to the display screen's interface. Touch signals pass through the connection point, via the first touch flexible circuit board, the touch cable, and the second touch flexible circuit board, and finally to the display screen. At this time, the interface is installed on the lower surface of the foam near the right end, and a silicone block is installed on the left surface of the foam. The other foam structure is installed in the same way. After installation, the interface of one foam is aligned with the slot on the inner surface of the silicone block of the other foam and inserted. The other side is also installed in the same way. The foam adhesive on the surface of the foam structure is then peeled off and applied to the outermost part of the designated blank area for the touchscreen display. The foam adhesive on the upper surface of the foam structure can be removed when the display screen is attached. A protective film is applied to the lower surface of the touchscreen frame to protect the touchscreen from scratches and damage during transportation and installation. The stepped connection between the interface and the slot on the inner surface of the silicone block improves the waterproof and dustproof performance of the connection structure.
[0006] To achieve the above objectives, a segmented frame-mounted foam dustproof stepped structure is provided, including a touch screen frame. A foam structure is fixedly connected to the upper surface of the touch screen frame. The foam structure includes foam adhesive, an interface, a silicone block, a slot, and foam.
[0007] Preferably, the upper surface of the interface is fixedly connected to the lower surface of the foam near the right end, and the upper surface of the foam adhesive is installed on the upper and lower surfaces of the foam.
[0008] Preferably, the right surface of the silicone block is fixedly connected to the left surface of the foam, and the annular surface of the slot is fixedly connected to the inner surface of the silicone block.
[0009] Preferably, a wiring device is fixedly connected to the upper surface of the touch screen frame near the lower end. The wiring device includes a connector, a first flexible touch circuit board, a strip of adhesive backing, a touch cable, a second flexible touch circuit board, and an interface.
[0010] Preferably, the upper surface of the connection is fixedly connected to the upper surface of the touch screen frame near the lower end, the upper surface of the first flexible touch circuit board is fixedly connected to the lower surface of the connection, the upper surface of the touch cable is fixedly connected to the lower surface of the first flexible touch circuit board, and the lower surface of the strip adhesive is mounted on the upper surface of the touch cable.
[0011] Preferably, the right side surface of the second touch flexible circuit board is fixedly connected to the left side surface of the touch cable, and the right side surface of the interface is fixedly connected to the left side surface of the second touch flexible circuit board.
[0012] Preferably, a protective film is installed on the lower surface of the touch screen frame, a peel-off strip is provided at the upper end of the protective film, and a touch screen is fixedly connected to the upper surface of the touch screen frame.
[0013] The beneficial effects of this utility model are as follows: Before use, connect the connector to the touch screen. The interface can be connected to the display screen interface. The touch signal will pass through the connector, the first touch flexible circuit board, the touch cable, and the second touch flexible circuit board to the interface. Finally, the signal will be transmitted to the display screen. At this time, install the interface on the lower surface of the foam near the right end. After installing the silicone block on the left side of the foam, do the same for the other foam structure. After installation, align the interface of one foam with the slot on the inner surface of the silicone block of the other foam and insert it. Do the same for the other side. At this time, peel off the foam adhesive on the surface of the foam structure and stick it on the outermost side of the blank area left for the touch display. At this time, the foam adhesive on the upper surface of the foam structure can be removed when the display screen is attached. The lower surface of the touch screen frame is covered with a protective film. The protective film is to protect the touch screen from scratches and damage during transportation and installation. The interface and the slot on the inner surface of the silicone block are connected in a stepped manner, which can improve the waterproof and dustproof performance of the connection structure.
[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0016] Figure 1 This is an overall schematic diagram of a segmented frame-mounted foam dustproof stepped structure according to the present invention;
[0017] Figure 2 This is a schematic diagram of a segmented frame-mounted foam dustproof stepped structure according to the present invention.
[0018] Figure 3 This is a schematic diagram of a segmented frame-mounted foam dustproof stepped structure foam device according to the present invention.
[0019] Figure 4 This is a schematic diagram of the overall structure of a segmented frame-mounted foam dustproof stepped wiring device according to the present invention.
[0020] Legend:
[0021] 1. Touch screen frame; 2. Foam structure; 3. Touch screen; 4. Retrieval tape; 5. Wiring device; 6. Protective film; 201. Foam adhesive; 202. Interface; 203. Silicone block; 204. Slot; 205. Foam; 501. Connection point; 502. First touch flexible circuit board; 503. Strip adhesive; 504. Touch cable; 505. Second touch flexible circuit board; 506. Interface point. Detailed Implementation
[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0023] Reference Figures 1 to 4This utility model embodiment discloses a segmented frame-mounted foam dustproof stepped structure, which includes a touch screen frame 1. A foam structure 2 is fixedly connected to the upper surface of the touch screen frame 1. The foam structure 2 includes foam adhesive 201, interface 202, silicone block 203, slot 204, and foam 205. The upper surface of interface 202 is fixedly connected to the lower surface of foam 205 near the right end. The upper surface of foam adhesive 201 is installed on the upper and lower surfaces of foam 205. The right side surface of silicone block 203 is fixedly connected to the left side surface of foam 205. The annular surface of slot 204 is fixedly connected to the inner surface of silicone block 203. Foam adhesive 201 is applied to the upper and lower surfaces of foam 205 to ensure that foam 205 is tightly bonded to the touch screen frame 1 and other devices. Foam adhesive 201 is also applied to the upper and lower surfaces of silicone block 203 to ensure that it is tightly bonded to the touch screen frame 1 and other devices.
[0024] A wiring device 5 is fixedly connected to the upper surface of the touch screen frame 1 near the lower end. The wiring device 5 includes a connector 501, a first flexible touch circuit board 502, a strip adhesive 503, a touch cable 504, a second flexible touch circuit board 505, and an interface 506. The upper surface of the connector 501 is fixedly connected to the upper surface of the touch screen frame 1 near the lower end. The upper surface of the first flexible touch circuit board 502 is fixedly connected to the lower surface of the connector 501. The upper surface of the touch cable 504 is fixedly connected to the lower surface of the first flexible touch circuit board 502. The lower surface of the strip adhesive 503 is mounted on the upper surface of the touch cable 504. The right side surface of the second flexible touch circuit board 505 is fixedly connected to the left side surface of the touch cable 504. The right side surface of the interface 506 is fixedly connected to the left side surface of the second flexible touch circuit board 505. The strip adhesive 503 is used to ensure that the touch cable 504 can adhere to other devices to prevent detachment from affecting signal transmission.
[0025] A protective film 6 is installed on the lower surface of the touch screen frame 1, and a peeling strip 4 is provided at the upper end of the protective film 6. The touch screen 3 is fixedly connected to the upper surface of the touch screen frame 1. The protective film 6 is to protect the touch screen 3 from scratches and damage during transportation and installation, and the peeling strip 4 is to make it easy to peel off the protective film 6.
[0026] Working principle: Before use, plan the touch display area, earpiece, and front camera area on the touch screen frame 1. Connect the connector 501 to the touch screen 3. The interface 506 can be connected to the display screen interface. The touch signal will pass through the connector 501, the first touch flexible circuit board 502, the touch cable 504, and the second touch flexible circuit board 505 to the interface 506. Finally, the signal will be transmitted to the display screen. At this time, install the interface 202 on the lower surface of the foam 205 near the right end. After installing the silicone block 203 on the left surface of the foam 205, the other foam structure 2 is installed in the same way. After installation, align the interface 202 of one foam 205 with the slot 204 on the inner surface of the silicone block 203 of the other foam 205 and insert it. Do the same on the other side. At this time, peel off the foam adhesive 201 on the lower surface of the foam structure 2 and stick it on the outermost side of the blank area of the planned touch display. The foam adhesive 201 on the upper surface of the foam structure 2 can be peeled off when the display screen is attached. The interface 202 and the slot 204 on the inner surface of the silicone block 203 are connected in a stepped manner, which can improve the waterproof and dustproof performance of the connection structure. The lower surface of the touch screen frame 1 is covered with a protective film 6 to prevent scratches.
[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A segmented frame-mounted foam dustproof stepped structure, comprising a touch screen frame (1), characterized in that, The upper surface of the touch screen frame (1) is fixedly connected to a foam structure (2). The foam structure (2) includes foam adhesive (201), interface (202), silicone block (203), slot (204), and foam (205). The upper surface of the interface (202) is fixedly connected to the lower surface of the foam (205) near the right end. The upper surface of the foam adhesive (201) is installed on the upper and lower surfaces of the foam (205). The right side surface of the silicone block (203) is fixedly connected to the left side surface of the foam (205). The annular surface of the slot (204) is fixedly connected to the inner surface of the silicone block (203).
2. The segmented frame-mounted foam dustproof stepped structure according to claim 1, characterized in that, The upper surface of the touch screen frame (1) near the lower end is fixedly connected to a wiring device (5). The wiring device (5) includes a connection point (501), a first touch flexible circuit board (502), a strip adhesive backing (503), a touch ribbon cable (504), a second touch flexible circuit board (505), and an interface (506).
3. The segmented frame-mounted foam dustproof stepped structure according to claim 2, characterized in that, The upper surface of the connector (501) is fixedly connected to the upper surface of the touch screen frame (1) near the lower end. The upper surface of the first touch flexible circuit board (502) is fixedly connected to the lower surface of the connector (501). The upper surface of the touch cable (504) is fixedly connected to the lower surface of the first touch flexible circuit board (502). The lower surface of the strip adhesive (503) is installed on the upper surface of the touch cable (504).
4. The segmented frame-mounted foam dustproof stepped structure according to claim 2, characterized in that, The right side surface of the second touch flexible circuit board (505) is fixedly connected to the left side surface of the touch cable (504), and the right side surface of the interface (506) is fixedly connected to the left side surface of the second touch flexible circuit board (505).
5. The segmented frame-mounted foam dustproof stepped structure according to claim 1, characterized in that, A protective film (6) is installed on the lower surface of the touch screen frame (1), and a peeling strip (4) is provided at the upper end of the protective film (6). A touch screen (3) is fixedly connected to the upper surface of the touch screen frame (1).