CN202600664U - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN202600664U CN202600664U CN 201220165647 CN201220165647U CN202600664U CN 202600664 U CN202600664 U CN 202600664U CN 201220165647 CN201220165647 CN 201220165647 CN 201220165647 U CN201220165647 U CN 201220165647U CN 202600664 U CN202600664 U CN 202600664U
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- touch screen
- capacitive touch
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Abstract
The embodiment of the utility model discloses a capacitive touch screen which comprises a face shell and a touch control layer fixedly connected at the inner side of the face shell and integrally formed together with the face shell through injection molding, and the touch control layer is a capacitive touch sensing sheet. The face shell and the touch control layer of the capacitive touch screen provided by the embodiment of the utility model are formed through one-time injection molding, and the capacitive touch screen has the characteristics of compact combination, simple process, high production quality and product efficiency and low cost.
Description
Technical field
The utility model relates to the touch screen technology field, relates in particular to a kind of capacitive touch screen.
Background technology
Along with developing rapidly of science and technology, touch technology receives the generally attention in the whole world, and is widely applied to industry-by-industry as a kind of at present simple, convenient, natural man-machine interaction mode.Along with touch-screen universal day by day in electronic product, occuping market leading position at present.Existing electronic product touch-screen is by the difference of its principle of work and transmission information medium; Can be divided into four kinds of resistance-type, condenser type, infrared-type and surface acoustic wave types, wherein advantage such as capacitive touch screen, easy operating good with its feel, multi-point touch enjoys and pursues.
Capacitive touch screen is a kind of touch-screen that combines to come the touch sensitive signal through electrode and people's bulk properties.After touch-screen four limits all plate long and narrow electrode, in electric conductor, form a low-voltage AC field.When human body (finger) touch screen; Because human body electric field action; Can form a coupling capacitance between finger and conductor layer, the electric current that four limit electrodes produce can flow to the contact, is directly proportional with the distance of pointing electrode and electric current is strong and weak; Be positioned at ratio and power that controller after the touch screen just can calculate electric current, accurately calculate touch point position.
Common on the market capacitance touch screen is generally the plane and touches, and adopting the planar transparent glass-cutting is surface substrate; At present, also occurred a kind of capacitance touch screen technology that realizes that cambered surface touches on the market, its in-mould injection face-piece that adopts surface coating is a surface substrate; Sensing chip directly is bonded on the face-piece through colloid layer,, but exists certain deficiency though this touch screen technology has improved the outward appearance and the moulding of electronic installation to a certain extent; On technology; Sensing chip and face-piece are easy to generate bad problems such as bubble when fitting, also need carry out deaeration through the deaeration machine after posting to handle complex procedures; Production efficiency is lower, and product quality can not get ensureing; In appearance, face-piece needs thicker PC material to do base material with proof strength, causes complete machine thickness to have than limitations and has reduced transmittance to a certain extent.
The utility model content
The utility model embodiment technical matters to be solved is, a kind of capacitive touch screen is provided, and effectively strengthens the bonding properties between face-piece and the touch control layer, and production efficiency and product quality are high.
In order to solve the problems of the technologies described above, the utility model embodiment has proposed a kind of capacitive touch screen, the touch control layer that comprises face-piece and be fixed in said face-piece inboard and said face-piece integrated injection molding, and said touch control layer is the capacitance touch sensing chip.
Further, said face-piece comprises moulding and is coated on the diaphragm of said moulding outside surface that said diaphragm and said moulding pass through integrated injection molding.
Further, said diaphragm is the polyethylene terephthalate film.
Further, the non-touch area of said diaphragm is provided with ink lay.
Further, said face-piece is transparent or semitransparent.
Further, said sensing chip is the surperficial pet film sheet that is printed with nano indium tin metal conductive oxide layer, and perhaps perfecting is shaped on the glass sensing chip of nano indium tin metal conductive oxide layer.
Further, said touch control layer connects touch screen control circuit through flexible printed circuit board.
The beneficial effect of the utility model embodiment is: a kind of capacitive touch screen is provided; Touch control layer, diaphragm and moulding are adopted the in-mould injection moulding; Utilize one curing molding technology with touch control layer and face-piece is intact is combined as a whole; Effectively strengthen the bonding properties of the two, further improve production efficiency of products and product quality, technology is simple and manufacturing cost is lower.
Description of drawings
Fig. 1 is the explosive view of the capacitive touch screen of the utility model embodiment.
Fig. 2 is the explosive view at another visual angle of capacitive touch screen of the utility model embodiment.
Fig. 3 is the cross-sectional view of the capacitive touch screen of the utility model embodiment.
Fig. 4 is the process flow diagram of the capacitive touch screen manufacturing approach of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is elaborated to the utility model.
Please refer to Fig. 1～Fig. 4, the capacitive touch screen of the utility model embodiment comprises face-piece 1 and touch control layer 2, and said touch control layer 2 is fixed in the inboard of said face-piece 1 and one-body molded through in-mould injection with said face-piece 1.
Said face-piece 1 is a surface coating in-mould injection face-piece, is set to transparent or semitransparently, comprises diaphragm 11 and moulding 12 through the said face-piece 1 of the one-body molded formation of in-mould injection, and said diaphragm 11 is coated on said moulding 12 outside surfaces fully.Among the utility model embodiment; Said face-piece 1 also realizes that with said touch control layer 2 in-mould injection is one-body molded simultaneously when said diaphragm 11 realizes that with moulding 12 in-mould injection is one-body molded, said touch control layer of soon having made 2 and said diaphragm 11 are inserted simultaneously in the injection mould and with moulding 12 and carried out the in-mould injection moulding.
Concrete, the capacitive touch screen of the utility model embodiment mainly obtains through following step:
Said diaphragm 11 is a transparent or semitransparent film; General polyethylene terephthalate (the Polyethylene terephthalate that adopts; Be called for short PET) transparent membrane; Said PET film is all very strong thin polymer film of a kind of creep resistance, fatigue durability, rub resistance, dimensional stability, and said diaphragm 11 is coated on whole said moulding 12 outside surfaces, and it can effectively prevent said face-piece 1 scratch, scratch, stabs equivalent damage; Impaired to guarantee that said capacitance touch screen surfaces and conducting wire are difficult for, and then fundamentally stop said capacitive touch screen and become big, linear deflection and problem such as malfunctioning because of impaired its resistance of causing.
Said face-piece 1 is provided with and supplies user's touch operation is the touch area with the zone of realizing human-computer interaction; When making said diaphragm 11; At first said diaphragm 11 is carried out outward appearance and handle,, need to keep its original transparent or semitransparent degree for the touch area; Part beyond in the touch area is that non-touch area then can be according to design requirement printed ink layer, thereby obtains required color or pattern; After outward appearance is handled, more said diaphragm 11 is carried out hot-forming processing, carrying out to be made into the moulding that various planes, cambered surface or plane combine with cambered surface according to design requirement when hot-forming.
The housing that said moulding 12 forms through injection moulding for injected plastics material; Be similarly transparent or semitransparent; Said injected plastics material generally adopts makrolon material, and its exterior contour and said diaphragm 11 are consistent, and said diaphragm 11 can be accomplished be coated on its outside surface.
Said touch control layer 2 is the capacitance touch sensing chip, and among the utility model embodiment, said sensing chip can be the PET diaphragm that the surface is printed with nano indium tin metal oxide (Indium Tin Oxides is called for short ITO) conductive layer; As a kind of embodiment, said sensing chip also can be the glass sensing chip that perfecting is shaped on the ITO conductive layer.
Among the utility model embodiment; Insert said sensing chip and hot-forming said diaphragm 11 in the injection mould simultaneously; Again injected plastics material is injected in the mould and combine respectively with said sensing chip and diaphragm 11; The sensing chip and the injected plastics material that make the diaphragm of handling through outward appearance 11 and be printed with conductive layer solidify to form one, in said face-piece 1 moulding, realize and the combining closely of said touch control layer 2, thus the described capacitive touch screen of formation the utility model embodiment.
The utility model embodiment can be widely used in the display screen technology in the various touch control electronic devices such as MP3/MP4 player, mobile phone, digital machine phase, DPF, navigational system, computer (comprising MID, PDA) and self-service terminal.
Said touch control layer 2 is passed through flexible printed circuit board 3 (Flexible Printed Circuit is called for short FPC) and is guided on the condenser type digital converter in the touch screen control circuit of each touch control electronic device to realize the touch controllable function of said capacitive touch screen.
The utility model embodiment; Adopt the manufacturing technology of single injection-molded to form said capacitive touch screen diaphragm, moulding, sensing chip three; Efficiently solve and utilize colloid applying housing and the existing touch-screen of sensing chip touch area in the prior art, simultaneously, saved applying and deaeration flow process because of problems such as the bonding bubble that produces, foul and white points; When improving the quality of products, effectively enhance productivity, reduce manufacturing cost; In addition, because the utility model embodiment saves the colloid layer of bonding housing and sensing chip, the reduction finished product thickness is arranged, simultaneously, said capacitive touch screen transmittance also is further enhanced.
The above is the embodiment of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also are regarded as the protection domain of the utility model.
Claims (7)
1. a capacitive touch screen is characterized in that, the touch control layer that comprises face-piece and be fixed in said face-piece inboard and said face-piece integrated injection molding, and said touch control layer is the capacitance touch sensing chip.
2. capacitive touch screen as claimed in claim 1 is characterized in that, said face-piece comprises moulding and be coated on the diaphragm of said moulding outside surface that said diaphragm and said moulding pass through integrated injection molding.
3. capacitive touch screen as claimed in claim 2 is characterized in that, said diaphragm is the polyethylene terephthalate film.
4. capacitive touch screen as claimed in claim 2 is characterized in that, the non-touch area of said diaphragm is provided with ink lay.
5. capacitive touch screen as claimed in claim 1 is characterized in that, said face-piece is transparent or semitransparent.
6. capacitive touch screen as claimed in claim 1; It is characterized in that; Said sensing chip is the surperficial pet film sheet that is printed with nano indium tin metal conductive oxide layer, and perhaps perfecting is shaped on the glass sensing chip of nano indium tin metal conductive oxide layer.
7. capacitive touch screen as claimed in claim 1 is characterized in that, said touch control layer connects touch screen control circuit through flexible printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220165647 CN202600664U (en) | 2012-04-18 | 2012-04-18 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220165647 CN202600664U (en) | 2012-04-18 | 2012-04-18 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600664U true CN202600664U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220165647 Expired - Fee Related CN202600664U (en) | 2012-04-18 | 2012-04-18 | Capacitive touch screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN202600664U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218100A (en) * | 2013-04-26 | 2013-07-24 | 信利光电(汕尾)有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN103218080A (en) * | 2013-04-12 | 2013-07-24 | 上海鼎为软件技术有限公司 | Touch module and manufacture method thereof |
| CN103425348A (en) * | 2013-08-09 | 2013-12-04 | 南昌欧菲光科技有限公司 | Protection cover plate, touch screen and manufacturing method of touch screen |
| TWI615066B (en) * | 2016-03-16 | 2018-02-11 | 綠點高新科技股份有限公司 | An article with conductive lines and manufacturing method thereof |
| CN109614011A (en) * | 2019-01-15 | 2019-04-12 | 昆山峰实电子外观应用科技有限公司 | Condenser type refers to touching functional product and preparation method thereof more |
| CN110450342A (en) * | 2019-07-31 | 2019-11-15 | 汕头超声显示器技术有限公司 | A kind of plastic part and preparation method thereof for capacitance touch screen |
-
2012
- 2012-04-18 CN CN 201220165647 patent/CN202600664U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218080A (en) * | 2013-04-12 | 2013-07-24 | 上海鼎为软件技术有限公司 | Touch module and manufacture method thereof |
| CN103218100A (en) * | 2013-04-26 | 2013-07-24 | 信利光电(汕尾)有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN103425348A (en) * | 2013-08-09 | 2013-12-04 | 南昌欧菲光科技有限公司 | Protection cover plate, touch screen and manufacturing method of touch screen |
| CN103425348B (en) * | 2013-08-09 | 2018-09-11 | 南昌欧菲光科技有限公司 | The production method of cover sheet, touch screen and touch screen |
| TWI615066B (en) * | 2016-03-16 | 2018-02-11 | 綠點高新科技股份有限公司 | An article with conductive lines and manufacturing method thereof |
| CN109614011A (en) * | 2019-01-15 | 2019-04-12 | 昆山峰实电子外观应用科技有限公司 | Condenser type refers to touching functional product and preparation method thereof more |
| CN110450342A (en) * | 2019-07-31 | 2019-11-15 | 汕头超声显示器技术有限公司 | A kind of plastic part and preparation method thereof for capacitance touch screen |
| CN110450342B (en) * | 2019-07-31 | 2022-02-08 | 汕头超声显示器技术有限公司 | Plastic part for capacitive touch screen and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN DEPUTE ELECTRONICS CO., LTD. Free format text: FORMER OWNER: GANZHOU DPT TECHNOLOGY CO.,LTD. Effective date: 20150625 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150625 Address after: 518000 Guangdong city of Shenzhen province Baoan District Xixiang South Street Community Shu Tai Road No. 2 Patentee after: SHENZHEN DPT ELECTRONICS Co.,Ltd. Address before: 341000 Depp special industrial zone, Nankang West Industrial Zone, Ganzhou, Jiangxi Patentee before: Ganzhou DPT Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20200418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |