CN202615358U - Capacitance type touch screen - Google Patents
Capacitance type touch screen Download PDFInfo
- Publication number
- CN202615358U CN202615358U CN 201220128403 CN201220128403U CN202615358U CN 202615358 U CN202615358 U CN 202615358U CN 201220128403 CN201220128403 CN 201220128403 CN 201220128403 U CN201220128403 U CN 201220128403U CN 202615358 U CN202615358 U CN 202615358U
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- control chip
- sensing function
- function sheet
- touch screen
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Abstract
The utility model relates to a capacitance type touch screen. A touch control chip is not required to be subjected to a package test, and only a chip wafer is required. Therefore, compared with a touch control chip which is used by a traditional touch screen module, the cost of chip package and the package test is reduced. Simultaneously, the chip has small area, and occupied area of the chip is small compared with a traditional touch control chip with a package shape. The touch screen has the advantages that the whole material cost of a capacitance screen is reduced, the touch screen is easy to produce, requirements of the capacitance screen production process are reduced and the product yield is improved.
Description
Technical field
The utility model relates to a kind of capacitive touch screen, relates in particular to a kind of capacitive touch screen of transparent medium band light shield layer.
Background technology
Current, capacitive touch screen has become the critical piece of man-machine interaction on the market, than traditional resistor screen, infrared touch panel better user experience effect can be provided.Therefore increasing being applied to becomes an indispensable critical piece in the portable consumer electronic product such as mobile phone, MID, panel computer, this wherein the most representative projecting type capacitor screen.The main composition of projecting type capacitor screen has cover plate (cover lens), inducing function sheet (touch sensor), flexible PCB (FPC) at present; And realize touching in the capacitance touch control system control chip part that is absolutely necessary; In the market according to touching the actual placement location of control chip in application end; Following several kinds of modes are roughly arranged: as shown in Figure 1; The touch control chip is placed on the flexible PCB and forms a complete touch-screen module with cover plate, inducing function sheet, and this way abbreviates COF (Chip on FPC) as; As shown in Figure 2, touch control chip and be placed on the system board, the production of touch-screen module is oversimplified, this actual treatment mode is called for short COB (Chip on Board, glass flip chip substrate are called for short " COB ").Above-mentioned dual mode, the touch-screen module all needs cover plate, and cover plate can be made up of materials such as glass, PET or PMMA; The substrate of touch sensing function sheet is generally glass or film (Film); Touching control chip all is the chip with packaging appearance, and no matter touching control chip is to be welded on the flexible PCB (FPC), still is welded on hard printed circuit board (PCB) (PCB); Touch control chip and all take bigger spatial area; And packaging cost has improved the cost of module and complete machine also than higher.
At present also there is related data to mention a kind of new touch-screen implementation; As shown in Figure 3; Be about to the lower surface that touch screen induction ITO figure is made in the cover plate of conventional touch screen; Make the cover plate and the function sensing chip of traditional capacitive touch screen module two-in-one; Usually two-in-one solution is called OGS (One Glass Solution), and then will touch control IC and be bundled in the shading region of the lower surface of cover-plate glass through COG (Chip on Glass) processing procedure, and the light screening material of shading region use is generally light tight and coloured printing ink or metal.The ITO figure with touch the lead of control IC and be connected through ITO or metal and so on, lead is also in the shading region of the lower surface of cover-plate glass.Though the said COG scheme of Fig. 3 is compared COF and COB scheme; Reduced the whole cost of touch-screen module; But this COG scheme implementation is difficulty very; Because it is on glass that the COG processing procedure need be bundled in touch-control IC; And this processing procedure exists IC and glass to bind the problem of contraposition difficulty, simultaneously owing to draw port PAD very little (generally all being micron-sized size) on sign of the contraposition on the IC wafer and the IC wafer, realize that high-precision contraposition can only adopt ccd video camera to carry out accurate contraposition usually.Because this scheme is the shading region at Cover lens carries out that IC binds and shading region has been to scribble or be coated with light screening material; Light screening material can shut out the light through the reflection of glass or light; So just be unfavorable for the coordinate contraposition when IC binds; Therefore, the difficulty that this scheme IC is bundled in Cover lens is very big, is unfavorable for using at present present equipment to carry out COG and binds.
The utility model content
The technical matters that the utility model solves is: make up a kind of capacitive touch screen and method for making, overcome the technical matters of prior art cost of manufacture height, complex process.
The technical scheme of the utility model is: make up a kind of capacitive touch screen; Comprise transparent medium, carry out touch sensible the touch sensing function sheet, touch control chip; The one side of said touch sensing function sheet is provided with the transparency conductive electrode that many groups form electric capacity; The another side of said touch sensing function sheet and said transparent medium are fitted, and said touch control chip is bundled on the said touch sensing function sheet, and said transparent medium is provided with light shield layer.
The further technical scheme of the utility model is: said transparency conductive electrode is arranged on the middle tangible zone that forms said touch sensing function sheet of said touch sensing function sheet, and said transparent medium is provided with light shield layer in tangible edges of regions.
The further technical scheme of the utility model is: said capacitive touch screen also comprises the FPC that is connected with said touch control chip; Said FPC is bundled on the said touch sensing function sheet; Said transparency conductive electrode is connected with said touch control chip through connecting lead; Said touch control chip, said FPC, said connection lead all are arranged on outside the tangible zone of said touch sensing function sheet, and said transparent medium is provided with light shield layer in the corresponding region of said touch control chip, said FPC, the setting of said connection lead.
The further technical scheme of the utility model is: said touch control chip connects with the said lead that is connected through the anisotropic conductive film.
The further technical scheme of the utility model is: said touch control chip is bundled on the said touch sensing function sheet through the CGO processing procedure.
The further technical scheme of the utility model is: said FPC is bundled on the said touch sensing function sheet through the anisotropic conductive film.
The further technical scheme of the utility model is: said touch control chip, said FPC, said connection conductor loop are around being arranged on around the said transparency conductive electrode.
The further technical scheme of the utility model is: said light shield layer is arranged on the zone of said transparent medium edge ring corresponding said transparent medium around said touch sensing function sheet touch area.
The further technical scheme of the utility model is: on the said transparency conductive electrode protective seam is set.
The technique effect of the utility model is: the utility model makes up a kind of capacitive touch screen; Comprise transparent medium, carry out touch sensible the touch sensing function sheet, touch control chip; The one side of said touch sensing function sheet is provided with the transparency conductive electrode that many groups form electric capacity; The another side of said touch sensing function sheet and said transparent medium are fitted, and said touch control chip is bundled on the said touch sensing function sheet, and said transparent medium is provided with light shield layer.The utility model capacitive touch screen and method for making touch control chip and need not carry out packaging and testing, only need the brilliant unit of chip, therefore compare the touch control chip that the traditional touch screen module uses, and have reduced the encapsulation and the packaging and testing cost of chip.Because the area of chip self is smaller, therefore compare traditional touch control chip with packaging appearance simultaneously, the occupation space area also can be very little.Can effectively reduce the integral material cost of capacitance plate itself, produce easily simultaneously, reduce requirement, improve the product yield the capacitance plate making technology.
Description of drawings
Fig. 1 is the prior art figure of the utility model COF pattern.
Fig. 2 is the prior art figure of the utility model COB pattern.
Fig. 3 is the third prior art of the utility model figure.
Fig. 4 is the utility model structural representation.
Fig. 5 is the utility model capacitive touch screen external view.
Fig. 6 is the utility model method for making process flow diagram.
Embodiment
Below in conjunction with specific embodiment, the utility model technical scheme is further specified.
As shown in Figure 4; The embodiment of the utility model is: make up a kind of capacitive touch screen; Comprise transparent medium 1, carry out touch sensible touch sensing function sheet 8, touch control chip 5, the one side of said touch sensing function sheet 8 is provided with the transparency conductive electrodes 7 that many groups form electric capacity, the another side of said touch sensing function sheet 8 and 1 applying of said transparent medium; Said touch control chip 5 is bundled on the said touch sensing function sheet 8, and said transparent medium 1 is provided with light shield layer 2.
Like Fig. 4, shown in Figure 5; The preferred implementation of the utility model is: comprise transparent medium 1, carry out the touch sensing function sheet 8 of touch sensible, the FPC 3 that touches control chip 5, is connected with said touch control chip 5; The one side of said touch sensing function sheet 8 is provided with the transparency conductive electrode 7 that many groups form electric capacity; The another side of said touch sensing function sheet 8 and said transparent medium 1 are fitted; Said transparency conductive electrode 7 is arranged on the middle tangible zone that forms said touch sensing function sheet 8 of said touch sensing function sheet 8; Said touch control chip 5 is bundled on the said touch sensing function sheet 8 with said FPC 3; And be arranged on the one side of said transparency conductive electrode 7; Said transparency conductive electrode 7 is connected with said touch control chip 6 through connecting lead, and said touch control chip 5, said FPC 3, said connection lead all are arranged on outside the tangible zone of said touch sensing function sheet 8, and said transparent medium 1 is provided with light shield layer 2 in the corresponding region of said touch control chip 5, said FPC 3, the setting of said connection lead.Said touch control chip 5, said FPC 3, said connection lead are arranged on transparency conductive electrode 7 one sides of said touch sensing function sheet 8.
As shown in Figure 4; The practical implementation process of the utility model is following: transparent medium 1 is clear films such as high temperature resistance polyester film or PC polycarbonate film in the said capacitive touch screen module; And light shield layer 2 is attached to the lower surface of transparent medium 1; Light shield layer 2 perhaps can be made up of with the light screening material that transparent medium 1 effectively combines versicolor printing ink, can effectively block connection lead, touch control chip 5 and the FPC 3 of touch sensing function sheet below.And the transparent material of the general hard material of base material of touch sensing function sheet 8, for example glass.And all have transparent conductive material to constitute conductive electrode on the tangible zone on touch sensing function sheet 8 base materials, for example the ITO electro-conductive glass forms electric capacity between the conductive electrode.Outside the tangible zone of touch sensing function sheet 8 base materials, be the connection lead; Connecting lead one end links to each other with transparency conductive electrode 7; An other end is connected to the binding position that touches control chip 5; Connecting lead is that plain conductor or other conductive materials are processed, and the connection conductor material is molybdenum-aluminium-molybdenum, silver slurry or ITO.Touch control chip 5 is bundled in touch sensing function sheet 8 and transparent medium 1 applying through the COG processing procedure other one side; Touch control chip 5 through ACF with to be connected lead continuous; It is pointed out that touching control chip 5 need not carry out packaging and testing, only need the brilliant unit of chip; Therefore compare the touch control chip that the traditional touch screen module uses, reduced the encapsulation and the packaging and testing cost of chip.Because the area of chip self is smaller, therefore compare traditional touch control chip 5 with packaging appearance simultaneously, the occupation space area also can be very little.FPC is bundled in touch sensing function sheet 8 through hot pressing equally.In the specific embodiment, on the said transparency conductive electrode 7 protective seam 6 is set.The binding face that said transparent medium 1 and said touch sensing function sheet 8 are fitted is provided with light shield layer 2 in said touch control chip 5, said FPC 3, the said zone that is connected the lead setting.Said transparent medium 1 and said touch sensing function sheet 8 are fitted through laminating layer 4.
Like Fig. 4, shown in Figure 5, the preferred implementation of the utility model is: said touch control chip 5, said FPC 3, said connection lead are arranged on around the said transparency conductive electrode 7.Further, said touch control chip 5, said FPC 3, said connection conductor loop are around being arranged on around the said transparency conductive electrode 7.Said light shield layer 2 is arranged on the zone of said transparent medium 1 edge ring corresponding said transparent medium 1 around said touch sensing function sheet 8 touch areas.
As shown in Figure 6; The technical scheme of the utility model is: make up a kind of capacitive touch screen method for making; The FPC 3 that said capacitive touch screen comprises transparent medium 1, carries out the touch sensing function sheet 8 of touch sensible, touches control chip 5, is connected with said touch control chip 5; The one side of said touch sensing function sheet 8 is provided with the transparency conductive electrode 7 that many groups form electric capacity, and said capacitive touch screen method for making comprises the steps:
Step 100: form electrode and light shield layer, that is: touch sensing function sheet 8 is plated transparent conductive material and form transparency conductive electrode 7, light shield layer 2 is arranged on the said transparent medium 1.
The practical implementation process is: said touch sensing function sheet 8 is plated transparent conductive material; Then conductive material is etched into transparency conductive electrode; After forming transparency conductive electrode; In plated film and the etching through repeatedly, form ITO conductive pattern in the touch sensing function sheet, with the ITO conductive electrode with touch the lead that control chip is connected usefulness, the current-carrying parts such as sign of CCD contraposition use.The zone of the corresponding said touch control chip of the binding face that light shield layer 2 plating (or printing) is fitted at said transparent medium 1 and said touch sensing function sheet 85, said FPC 3, the setting of said connection lead.
Step 200: bind, that is: said touch control chip 5 is bundled on the said touch sensing function sheet 8.
Detailed process is following: touch control chip 5 and be bundled in the other one side that touch sensing function sheet 8 and transparent medium 1 are fitted through the COG processing procedure, FPC 3 is bundled on the touch sensing function sheet 8 through hot pressing.In the specific embodiment, on said transparency conductive electrode 7, protective seam 6 is set.
Step 300: fit, that is: said transparent medium 1 is fitted in the another side general that said touch sensing function sheet 8 is provided with said transparency conductive electrode 7.Detailed process is following: said transparent medium 1 and said touch sensing function sheet 8 are fitted through laminating layer 4.
The technique effect of the utility model is: the utility model makes up a kind of capacitive touch screen and method for making; Comprise transparent medium 1, carry out touch sensible touch sensing function sheet 8, touch control chip 5; The one side of said touch sensing function sheet 8 is provided with the transparency conductive electrode 7 that many groups form electric capacity; The another side of said touch sensing function sheet 8 and said transparent medium 1 are fitted; Said touch control chip 5 is bundled on the said touch sensing function sheet 8, and said transparent medium 1 is provided with light shield layer 2.The utility model capacitive touch screen and method for making touch control chip 5 and need not carry out packaging and testing, only need the brilliant unit of chip, therefore compare the touch control chip that the traditional touch screen module uses, and have reduced the encapsulation and the packaging and testing cost of chip.Because the area of chip self is smaller, therefore compare traditional touch control chip with packaging appearance simultaneously, the occupation space area also can be very little.Can effectively reduce the integral material cost of capacitance plate itself, produce easily simultaneously, reduce requirement, improve the product yield the capacitance plate making technology.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.
Claims (10)
1. capacitive touch screen; It is characterized in that; Comprise transparent medium, carry out touch sensible the touch sensing function sheet, touch control chip, the one side of said touch sensing function sheet is provided with the transparency conductive electrodes that many groups form electric capacity, the another side of said touch sensing function sheet and the applying of said transparent medium; Said touch control chip is bundled on the said touch sensing function sheet, and said transparent medium is provided with light shield layer.
2. according to the said capacitive touch screen of claim 1; It is characterized in that; Said transparency conductive electrode is arranged on the middle tangible zone that forms said touch sensing function sheet of said touch sensing function sheet, and said transparent medium is provided with light shield layer in tangible edges of regions.
3. according to the said capacitive touch screen of claim 2; It is characterized in that; Said capacitive touch screen also comprises the FPC that is connected with said touch control chip; Said FPC is bundled on the said touch sensing function sheet; Said transparency conductive electrode is connected with said touch control chip through connecting lead, and said touch control chip, said FPC, said connection lead all are arranged on outside the tangible zone of said touch sensing function sheet, and said transparent medium is provided with light shield layer in the corresponding region of said touch control chip, said FPC, the setting of said connection lead.
4. according to the said capacitive touch screen of claim 3, it is characterized in that said touch control chip connects with the said lead that is connected through the anisotropic conductive film.
5. according to the said capacitive touch screen of claim 1, it is characterized in that said touch control chip is bundled on the said touch sensing function sheet through the CGO processing procedure.
6. according to the said capacitive touch screen of claim 1, it is characterized in that said FPC is bundled on the said touch sensing function sheet through the anisotropic conductive film.
7. according to the said capacitive touch screen of claim 3, it is characterized in that said touch control chip, said FPC, said connection conductor loop are around being arranged on around the said transparency conductive electrode.
8. according to the said capacitive touch screen of claim 7, it is characterized in that said light shield layer is arranged on the zone of said transparent medium edge ring corresponding said transparent medium around said touch sensing function sheet touch area.
9. according to the said capacitive touch screen of claim 1, it is characterized in that, on the said transparency conductive electrode protective seam is set.
10. according to the said capacitive touch screen of claim 3, it is characterized in that said touch control chip, said FPC, said connection lead are arranged on the transparency conductive electrode one side of said touch sensing function sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220128403 CN202615358U (en) | 2012-03-30 | 2012-03-30 | Capacitance type touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220128403 CN202615358U (en) | 2012-03-30 | 2012-03-30 | Capacitance type touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202615358U true CN202615358U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220128403 Expired - Fee Related CN202615358U (en) | 2012-03-30 | 2012-03-30 | Capacitance type touch screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN202615358U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629177A (en) * | 2012-03-30 | 2012-08-08 | 敦泰科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN103064572A (en) * | 2012-12-31 | 2013-04-24 | 深圳莱宝高科技股份有限公司 | Touch display panel and manufacturing method thereof |
| CN103257774A (en) * | 2013-05-10 | 2013-08-21 | 深圳市立德通讯器材有限公司 | One glass solution (OGS) capacitive touch screen and manufacturing method thereof |
| CN103257767A (en) * | 2013-01-30 | 2013-08-21 | 福建科创光电有限公司 | Integrated capacitive sensing touch screen adopting two frame silk-screen and production method of integrated capacitive sensing touch screen |
| TWI488100B (en) * | 2013-06-20 | 2015-06-11 | Focaltech Systems Ltd | Capacitive touch screen |
| TWI488102B (en) * | 2013-06-20 | 2015-06-11 | Focaltech Systems Ltd | Capacitive touch screen |
| US9760227B2 (en) | 2013-01-30 | 2017-09-12 | Fujian Kechuang Photoelectric Co., Ltd. | OGS captive touch panel and method for manufacturing same |
-
2012
- 2012-03-30 CN CN 201220128403 patent/CN202615358U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629177A (en) * | 2012-03-30 | 2012-08-08 | 敦泰科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN102629177B (en) * | 2012-03-30 | 2015-08-12 | 敦泰科技有限公司 | Capacitive touch screen and method for making |
| CN103064572A (en) * | 2012-12-31 | 2013-04-24 | 深圳莱宝高科技股份有限公司 | Touch display panel and manufacturing method thereof |
| CN103064572B (en) * | 2012-12-31 | 2016-07-06 | 深圳莱宝高科技股份有限公司 | Touching display screen and preparation method thereof |
| CN103257767A (en) * | 2013-01-30 | 2013-08-21 | 福建科创光电有限公司 | Integrated capacitive sensing touch screen adopting two frame silk-screen and production method of integrated capacitive sensing touch screen |
| US9760227B2 (en) | 2013-01-30 | 2017-09-12 | Fujian Kechuang Photoelectric Co., Ltd. | OGS captive touch panel and method for manufacturing same |
| CN103257774A (en) * | 2013-05-10 | 2013-08-21 | 深圳市立德通讯器材有限公司 | One glass solution (OGS) capacitive touch screen and manufacturing method thereof |
| CN103257774B (en) * | 2013-05-10 | 2016-01-20 | 深圳市立德通讯器材有限公司 | A kind of OGS capacitive touch screen and manufacture method thereof |
| TWI488100B (en) * | 2013-06-20 | 2015-06-11 | Focaltech Systems Ltd | Capacitive touch screen |
| TWI488102B (en) * | 2013-06-20 | 2015-06-11 | Focaltech Systems Ltd | Capacitive touch screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20160330 |