CN215006604U - Touch panel with thin film circuit board - Google Patents
Touch panel with thin film circuit board Download PDFInfo
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- CN215006604U CN215006604U CN202121700515.4U CN202121700515U CN215006604U CN 215006604 U CN215006604 U CN 215006604U CN 202121700515 U CN202121700515 U CN 202121700515U CN 215006604 U CN215006604 U CN 215006604U
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- circuit board
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Abstract
The utility model provides a touch panel with a thin film circuit board, which comprises a face shell, a decorative film fixed on the outer side surface of the face shell and a flexible circuit board arranged on the inner side surface of the face shell; the flexible circuit board comprises a transparent base material and a circuit line layer printed on the first surface of the transparent base material, and the second surface of the transparent base material is connected with the inner side surface of the face shell into a whole through in-mold injection molding. The utility model discloses overall structure is very simple, the second surface that flexible circuit board passes through transparent substrate with the medial surface of face-piece passes through in-mould injection moulding in an organic whole, makes flexible circuit board can be firm fix the medial surface of face-piece can not take place to drop, ensures touch panel's structural reliability and durability, only is adapted to shape specification separately the face-piece to the processing technology who is favorable to having simplified touch panel makes the manufacturing of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of the panel shaping technique and specifically relates to a touch panel with thin film circuit board is related to.
Background
Taking household appliances as an example, a touch panel is arranged on one side surface of a product of the existing household appliances such as a microwave oven, an electric cooker and the like. As shown in fig. 1, the touch panel generally includes a housing 1 made of plastic material, a decoration film 3 adhered to an outer side surface of the housing 1 through a first adhesive layer 2, and a flexible circuit board 5 adhered to an inner side surface of the housing 1 through a second adhesive layer 4. For example, a clearance groove 11 and a plurality of key holes 12 for installing a display screen or a touch screen are arranged on the face shell 1, and a corresponding key switch is arranged on the flexible circuit board 5 corresponding to each key hole 12. In actual assembly process, second adhesive linkage 4 often adopts the double faced adhesive tape, utilizes the double faced adhesive tape to bond flexible circuit board 5 in the corresponding position of face-piece 1 medial surface, lets every key switch on the flexible circuit board 5 correspond the setting with one of them key hole 12 respectively to let the user can carry out touch-control operation to corresponding key switch through the decorating film 3 that acts on key hole 12 lateral surface.
The existing touch panel has the following defects: because it bonds flexible circuit board 5 in the corresponding position of face-piece 1 medial surface to utilize the double faced adhesive tape, not only assemble loaded down with trivial details and assembly efficiency lower, increased the assembly degree of difficulty that utilizes the double faced adhesive tape to bond flexible circuit board 5 when being irregular structure to face-piece 1, flexible circuit board 5 bonds insecurely simultaneously, easily takes place to drop with face-piece 1 in the use and leads to the user to be unable to carry out touch-control operation and inefficacy to the reliability is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a touch panel with thin film circuit board has the key feature that the reliability is high and easily processing.
The utility model provides a touch panel with a thin film circuit board, which comprises a face shell, a decorative film fixed on the outer side surface of the face shell and a flexible circuit board arranged on the inner side surface of the face shell; the flexible circuit board comprises a transparent base material and a circuit line layer printed on the first surface of the transparent base material, and the second surface of the transparent base material is connected with the inner side surface of the face shell into a whole through in-mold injection molding.
In a preferred embodiment, the front shell has a plurality of key holes, the circuit layer has at least key switches corresponding to the key holes one by one and conductive circuits connected to the key switches, and each key switch is corresponding to each key hole one by one.
In a preferred embodiment, the circuit trace layer is printed from a transparent conductive ink.
In a preferred embodiment, the transparent substrate is made of PMMA material or PET material.
In a preferred embodiment, the flexible circuit board further includes an insulating transparent film covering the circuit wiring layer.
In a preferred embodiment, the insulating transparent film is a PET film, a PVC film, a PC film, or a polyurethane film.
In a preferred embodiment, the decoration film includes a transparent base film and a print pattern layer printed on a first surface of the transparent base film.
In a preferred embodiment, the second surface of the transparent base film is integrally connected to the outer side surface of the face shell by in-mold injection molding.
In a preferred embodiment, an insulating transparent film is disposed on the first surface of the transparent base film to cover the print pattern layer.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a touch panel, overall structure is very simple, the flexible circuit board passes through the second surface of transparent substrate and the medial surface of face-piece passes through the mould internal injection moulding in an organic whole, makes the flexible circuit board can firmly fix the medial surface of face-piece and can not take place to drop, guarantees touch panel's structural reliability and durability; the flexible circuit board is not required to be bonded to the inner side surface of the face shell through a double-sided adhesive tape, so that the touch panel is not only suitable for the face shells with respective shapes and specifications, but also beneficial to simplifying the processing technology of the touch panel and facilitating the processing and manufacturing of the touch panel.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a conventional touch panel.
Fig. 2 is a partial structural schematic view of the face housing.
Fig. 3 is a schematic cross-sectional structure diagram of a touch panel disclosed in the present invention.
Fig. 4 is a schematic structural view of the thin film circuit board fixed on the inner side surface of the panel case.
Detailed Description
To further clarify the technical solutions and effects adopted by the present application to achieve the intended purpose, the following detailed description is given with reference to the accompanying drawings and preferred embodiments according to the present application. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The utility model discloses a touch panel with thin film circuit board has the key feature that the reliability is high and easily processing. Specifically combine shown in fig. 3 and 4, touch panel includes face-piece 1, fixes decorative film 3 and the setting of 1 lateral surface of face-piece are in the flexible circuit board 5 of 1 medial surface of face-piece, flexible circuit board 5 includes transparent substrate and prints the circuit line layer on the first surface of transparent substrate, the second surface of transparent substrate with the medial surface of face-piece 1 passes through mould internal injection moulding and connects in an organic whole, so that flexible circuit board 5 can be firm fix the medial surface of face-piece 1 and can not take place to drop, ensure touch panel's structural reliability and durability. And simultaneously, the utility model discloses need not with flexible circuit board 5 through the double faced adhesive tape bond in the medial surface of face-piece 1 is adapted to shape specification separately face-piece 1, and be favorable to having simplified touch panel's processing technology makes its be convenient for manufacturing.
For the flexible circuit board 5, the circuit line layer is printed on the first surface of the transparent substrate, and the second surface of the transparent substrate is not printed with any circuit line layer, so that the flexible circuit board 5 and the face shell 1 are integrally fixed by in-mold injection molding.
The front shell 1 is provided with a clearance groove 11 for installing a display screen or a touch screen and a plurality of key holes 12, and the circuit layer is at least provided with key switches 51 corresponding to the key holes 12 one by one and conductive circuits 52 connected with the key switches 51. The circuit line layer is preferably printed by transparent conductive ink, and the transparent conductive ink is Orgacon EL-P3040 ink of Germany Bayer company.
The transparent substrate may be made of optical transparent materials such as PMMA (polymethyl methacrylate) or PET (polyethylene terephthalate), so that the flexible circuit board 5 is a flexible circuit board having a transparent structure as a whole.
In addition, the flexible circuit board 5 further includes an insulating transparent film covering the circuit line layer, the insulating transparent film may be a PET (polyethylene terephthalate) film, a PVC (polyvinyl chloride) film, a PC (polycarbonate) film, a polyurethane film, or the like, and in view of that the PET film can endure a high temperature and can withstand a processing temperature of 100 degrees celsius or more without melting, the insulating transparent film is preferably a PET film.
In addition, the decoration film 3 includes a transparent base film and a print pattern layer printed on the first surface of the transparent base film, but it is also possible to provide an insulating transparent film (e.g., a PET film) on the first surface of the transparent base film to cover the print pattern layer.
The touch panel is molded as follows: will the second surface of flexible circuit board 5 (promptly the second surface of transparent basement membrane) places the die cavity bottom at forming die's lower mould up, covers forming die's last mould after, through the injection molding machine in toward the die cavity injection hot melt plastic, utilizes die cavity injection moulding 1 in-process of face shell lets the second surface of transparent substrate with the medial surface of face shell 1 is connected in an organic whole. In the processed touch panel, each key switch 51 on the flexible circuit board 5 is respectively arranged corresponding to one of the key holes 12 of the panel shell 1, so that a user can perform touch operation on the corresponding key switch when acting on the decorative film 3 on the outer side surface of the key hole 12.
Of course, also can be simultaneously with the decorative film 3 with flexible circuit board 5 is in the shaping face casing 1 utilizes in-mould injection moulding to connect respectively face casing 1's lateral surface and medial surface, specifically be the second surface of transparent basement membrane with face casing 1's lateral surface passes through in-mould injection moulding in an organic whole, makes decorative film 3 firmly reliable fixes face casing 1's lateral surface, and the structure is reliable and very durable.
Specifically, the touch panel is molded as follows: will the second surface of flexible circuit board 5 (promptly the second surface of transparent basement membrane) places the die cavity bottom at forming die's lower mould up, will again the second surface of decorative film 3 (promptly the second surface of transparent substrate) sets up the die cavity top at forming die's last mould down, will go up the mould and cover down together, injects hot melt plastic through the injection molding machine in toward the die cavity, utilizes die cavity injection moulding 1 in-process of face-piece lets the second surface of transparent substrate with the medial surface of face-piece 1 is connected in an organic whole, lets simultaneously the second surface of decorative film 3 with the lateral surface of face-piece 1 is connected in an organic whole.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. A touch panel with a thin film circuit board comprises a face shell, a decorative film fixed on the outer side face of the face shell and a flexible circuit board arranged on the inner side face of the face shell; the flexible circuit board is characterized by comprising a transparent base material and a circuit line layer printed on the first surface of the transparent base material, wherein the second surface of the transparent base material and the inner side surface of the surface shell are connected into a whole through in-mold injection molding.
2. The touch panel with the thin film circuit board as claimed in claim 1, wherein the face casing has a plurality of key holes, the circuit layer has at least key switches corresponding to the key holes and conductive traces connected to the key switches, and each of the key switches is corresponding to each of the key holes.
3. The touch panel with the thin film circuit board of claim 1, wherein the circuit trace layer is printed with a transparent conductive ink.
4. The touch panel with the thin film circuit board of claim 1, wherein the transparent substrate is made of PMMA material or PET material.
5. The touch panel with the thin film circuit board of claim 1, wherein the flexible circuit board further comprises an insulating transparent film covering the circuit wiring layer.
6. The touch panel with the thin film circuit board according to claim 5, wherein the insulating transparent film is a PET film, a PVC film, a PC film or a polyurethane film.
7. The touch panel with a thin film circuit board according to any one of claims 1 to 6, wherein the decoration film 3 comprises a transparent base film and a print pattern layer printed on a first surface of the transparent base film.
8. The touch panel with the thin film circuit board of claim 7, wherein the second surface of the transparent base film is integrally connected to the outer surface of the cover by in-mold injection molding.
9. The touch panel with a thin film circuit board according to claim 7, wherein an insulating transparent film is provided on the first surface of the transparent base film to cover the print pattern layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121700515.4U CN215006604U (en) | 2021-07-23 | 2021-07-23 | Touch panel with thin film circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121700515.4U CN215006604U (en) | 2021-07-23 | 2021-07-23 | Touch panel with thin film circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215006604U true CN215006604U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121700515.4U Active CN215006604U (en) | 2021-07-23 | 2021-07-23 | Touch panel with thin film circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215006604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023245905A1 (en) * | 2022-06-20 | 2023-12-28 | 无锡小天鹅电器有限公司 | Film, display panel, display device and household appliance |
-
2021
- 2021-07-23 CN CN202121700515.4U patent/CN215006604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023245905A1 (en) * | 2022-06-20 | 2023-12-28 | 无锡小天鹅电器有限公司 | Film, display panel, display device and household appliance |
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