CN201927012U - One-chip capacitive touch screen - Google Patents
One-chip capacitive touch screen Download PDFInfo
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- CN201927012U CN201927012U CN2010206671261U CN201020667126U CN201927012U CN 201927012 U CN201927012 U CN 201927012U CN 2010206671261 U CN2010206671261 U CN 2010206671261U CN 201020667126 U CN201020667126 U CN 201020667126U CN 201927012 U CN201927012 U CN 201927012U
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Abstract
The utility model relates to a one-chip capacitive touch screen. An integrated circuit (IC) chip is arranged in a peripheral region on a substrate of the one-chip capacitive touch screen; the input end of the one-chip capacitive touch screen is connected with a peripheral connecting wire; the external end of the one-chip capacitive touch screen is connected with an external connecting wire; when the size of the capacitive touch screen increases and the number of first sensing electrodes and the number of second sensing electrodes increase, an IC chip with a plurality of input ends is selected; the number of external ends is fixed, so that the number of external connecting wires is invariant, and the number of connecting lines on a flexible circuit board does not need to be increased; the IC chip is embedded into the substrate, so that high assembling ability is achieved; the number of the external connecting wires connected to the flexible circuit board is not increased, and the widths of the external connecting wires do not need to be reduced, so that reliability is ensured, and more assembly space is saved compared with the structure in which the IC chip is arranged outside the substrate; and moreover, a connecting structure simpler than the flexible circuit board can be connected with an external circuit.
Description
Technical field
The utility model relates to a kind of touch-screen, relates in particular to a kind of microarray strip one chip capacitance touch screen.
Background technology
In recent years, along with the fast development and the application of infotech, wireless mobile communication and information household appliances, people grow with each passing day to the dependence of electronic product.For reach more convenient, volume is littler, lighter and handyizatioier and more humane purpose, many information products by traditional keyboard or mouse as input media, change into and use the touch-screen that being arranged on before the display screen as input media.Wherein, capacitance touch screen has the transmitance height, touches the advantage exert pressure and needn't exert oneself, can resist abominable external environment, surveys when can also realize a plurality of touch point during work, has a good application prospect.
Existing capacitance touch screen generally comprises overlay (contact panel), sensing electrode substrate and sensing electrode layer; The sensing electrode layer is arranged on the sensing electrode substrate, the sensing electrode layer comprises a plurality of first sensing electrode and a plurality of second sensing electrodes that extend along second direction that extend along first direction, the interlaced formation induction arrays of first sensing electrode and second sensing electrode; Electrically do not connect mutually between each first sensing electrode, electrically do not connect mutually between each second sensing electrode, electrically be not connected between first sensing electrode and second sensing electrode; Generally, in order to reduce the stray capacitance between first, second sensing electrode, also need to be set to minimum at the width of each two electrode in staggered place.First sensing electrode and second sensing electrode form through graphical as indium tin oxide films generally by nesa coating.Another capacitance touch screen in order to reach lighter, thinner, and reduces the purpose of manufacturing cost, and first sensing electrode and second sensing electrode all are set directly at the medial surface of overlay, saves the sensing electrode plate, i.e. the one chip capacitance touch screen.
When the user contacted contact panel with finger, first sensing electrode at contact origination point place, the electric capacity of second sensing electrode changed, and by the detection of IC chip, just can judge the generation of touch and the coordinate of contact origination point.
Between above-mentioned a plurality of first sensing electrodes and second sensing electrode and IC chip, general adopt following connected mode: first sensing electrode and second sensing electrode are connected to by the peripheral line that is arranged on the non-induction region of sensing electrode substrate periphery and are arranged on being connected on the end of somewhere, edge, are external on the IC chip that is arranged on the hard circuit board by flexible circuit board (FPC) again.
Along with increasing of the increase of touch screen size and first sensing electrode and the second sensing electrode quantity, the external wiring quantity that first sensing electrode and second sensing electrode are connected to the IC chip also increases progressively thereupon, thereby aforesaid way need increase the quantity of external line on flexible circuit board, will cause following problem: first, increase the width of flexible circuit board, made the difficulty of flexible circuit board when assembling improve; The second, external wiring quantity increase makes the width of each external line reduce, thereby has reduced its reliability; The 3rd, increase external line and be subjected to the possibility that outer signals is disturbed.
On the other hand, COG (the Chip on Glass) technology that the IC chip directly is attached to base plate glass is widely used on the LCD, but present this COG technology is not applied on capacitance touch screen.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of microarray strip one chip capacitance touch screen, the structure of this microarray strip one chip capacitance touch screen is simplified more, and under the situation that first sensing electrode and the second sensing electrode quantity increase, do not need to increase the wiring quantity on the flexible circuit board, have assembling capacity, reliability preferably, and the minimizing assembly space, but also can adopt than compact more, the simple connected mode of flexible circuit board.The technical scheme that adopts is as follows:
Microarray strip one chip capacitance touch screen comprises substrate, the sensing electrode layer, periphery line and external line, the medial surface of substrate is divided into induction region and neighboring area, the sensing electrode layer is arranged on the induction region of substrate, the sensing electrode layer comprises a plurality of first sensing electrode and a plurality of second sensing electrodes that extend along second direction that extend along first direction, the interlaced formation induction arrays of first sensing electrode and second sensing electrode, periphery line and external line all are arranged on the neighboring area, one end of each peripheral line is connected with one first sensing electrode or second sensing electrode, it is characterized in that: also comprise the IC chip; The IC chip is fixed on the neighboring area; Connect end in the IC chip and be connected, connect the end in the external connection end of IC chip and the described external line and be connected with the other end of peripheral line.
Described substrate simultaneously also as the overlay of this microarray strip one chip capacitance touch screen, makes capacitance touch screen reach lighter, thinner both as the sensing electrode pole plate that supports the sensing electrode layer, and saves the purpose of manufacturing cost.
Connect end in the above-mentioned IC chip, refer to the connectivity port that the IC chip is exported/imported induction electrode, and external connection end refers to the port that the IC chip is connected with external circuit.Above-mentioned peripheral line plays the effect that is connected of IC chip and first sensing electrode and second sensing electrode; External line then plays the effect that is connected of IC chip and external circuit, generally comprise: data line, clock cable, look-at-me line, ground voltage line, in being provided with, each external line connects end and external end, connect the end wherein and be connected with the external connection end of IC chip, external end then can be connected with external circuit by flexible circuit board (FPC) or other modes.
After setting the IC chip and peripheral line, external line be connected, on the neighboring area, also cover one deck protection glue-line, play a protective role, also play the effect that is fastenedly connected.
The quantity that connects end in the IC chip is generally by the quantity decision of connection sensing electrode, the quantity of external connection end is relative fixed then, by the neighboring area on the substrate that the IC chip is set to the one chip capacitance touch screen, connecing end in it is connected with peripheral line, its external connection end is connected with external line, volume increase when capacitance touch screen, when the number of first sensing electrode and second sensing electrode increases, connect the more IC chip of end in selecting for use, because its external connection end fixed number, so the number of external line is also just constant, does not need to increase the wiring quantity on the flexible circuit board; The IC built-in chip type to substrate, had assembling capacity preferably; The wiring quantity that connects flexible circuit board does not increase, and need not to reduce the width of its line, has guaranteed reliability, and has more saved assembly space compared with the outside that the IC chip is arranged on substrate.Because the external end of external line is as the final connectivity port of touch-screen and external circuit, so can also adopt than simple more other connected modes of flexible circuit board.
In order to reach purpose attractive in appearance,, it is characterized in that: comprise also and cover layer, cover layer and be arranged on the neighboring area of substrate that peripheral line and external line all are arranged on to be covered on the layer as preferred version of the present utility model.Cover layer and can cover the inner structure of capacitance touch screen, make the integral body of touch-screen more apparent attractive in appearance in the neighboring area.
For fixing IC chip in the neighboring area, and reach desirable electric conductivity, as the further preferred version of the utility model, it is characterized in that: also comprise aeolotropic conductive film (ACF), the IC chip is bonded together by the neighboring area of aeolotropic conductive film and substrate, connects end, external connection end in the IC chip and all is connected by connecing the end in the conductive metal balls in the aeolotropic conductive film and described peripheral cabling, the external line.
For the compactedness that improves structure and reach better electric conductivity, as the further preferred version of the utility model, it is characterized by: also comprise butt end and vertical conductor; The butt end is arranged on the circuit board of external circuit, and the circuit board of external circuit parallels with substrate; The butt end is corresponding one by one with external end, and external end is connected by vertical conductor with the butt end.By butt end and vertical conductor are set, the external end of external line directly is connected with external circuit with the butt end by vertical conductor, and structure is compact more, simple.
Above-mentioned vertical conductor is along the conductor that carries out conducting perpendicular to the direction of base plan.
In order to reach better electric conductivity, as the utility model preferred version further, it is characterized in that: described vertical conductor is an elastic body, also comprises making external end, vertical conductor, butt end three be pressed on pressure mechanism together.Under the effect of pressure mechanism, vertical conductor closely is connected the vertical conductor two ends respectively by the circuit board of external circuit and substrate compacting with external end with the butt end.
The feature of above-mentioned pressure mechanism is: substrate and the external circuit board relative position are fixed, and made distance between substrate and the external circuit board less than the length of vertical conductor under free state.Pressure mechanism can be one deck bonding coat, makes to be bonded together by bonding coat between substrate and the external circuit board; Pressure mechanism also can be to comprise bonding coat, hard frame, and the hard frame is arranged between the circuit board of substrate and external circuit, and the circuit board of substrate and external circuit all is bonded together by bonding coat and hard frame; More preferably pressure mechanism comprises bonding coat, hard frame and screw, and the hard frame is arranged between the circuit board of substrate and external circuit, and substrate is bonded together by bonding coat and hard frame, and the circuit board of external circuit is locked on the hard frame by screw; Pressure mechanism can also be to comprise mechanical structure complicated on the applied equipment of touch-screen.
External end is generally block type electrode, prior art according to capacitance touch screen, external end can be metal simple-substance, alloy or the transparent conductive material of single or multiple lift, also can be the superimposed of metal simple-substance and transparent conductive material, the surface of external end has good electrical conductivity and certain rigidity, can resist certain pressure.The butt end normally is arranged on the derby on the circuit board of external circuit.
In order to reach better electric conductivity, as the utility model preferred version further again, it is characterized in that: described vertical conductor is a conductive rubber.Conductive rubber can conducting connects external end and butt end, and under the situation of the pressure of the mechanism that is under pressure, produce certain elastic deformation, make external end and butt end keep better conducting reliability.More preferably conductive rubber is the anisotropic conductive rubber that only can conduct electricity in vertical direction.
In order to reach better electric conductivity, as the utility model preferred version further again, it is characterized in that: described vertical conductor is a metal sheeting.Metal sheeting can conducting connects external end and butt end, and under the situation of the pressure of the mechanism that is under pressure, produce certain elastic deformation, make external end and butt end keep better conducting reliability.More preferably an end of metal sheeting is welded on the butt end.
Description of drawings
Fig. 1 is the structural representation of first kind of preferred implementation of the utility model
Fig. 2 is the A-A sectional view of Fig. 1
Fig. 3 is the B part partial enlarged drawing of Fig. 2
Fig. 4 is the A-A sectional view that also is provided with among Fig. 1 when covering layer, and it is the synoptic diagram of second kind of preferred implementation of the utility model
Fig. 5 is B ' the part partial enlarged drawing of Fig. 4
Fig. 6 is the synoptic diagram of external end and present position, butt end in the third preferred implementation of the utility model
Fig. 7 is the structural representation that external end is connected with the butt end in the third preferred implementation of the utility model
Fig. 8 is that each laminating of Fig. 7 closes the cut-open view of back along C-C
Fig. 9 is the structural representation that external end is connected with the butt end in the 4th kind of preferred implementation of the utility model
Embodiment
Be described further below in conjunction with accompanying drawing and preferred implementation of the present utility model.
Embodiment one
As Fig. 1; Fig. 2 and shown in Figure 3; this microarray strip one chip capacitance touch screen comprises substrate 1; the sensing electrode layer; periphery line 2; external line 3; IC chip 4 and aeolotropic conductive film 5; the medial surface of substrate 1 is divided into induction region 6 and neighboring area 7; the sensing electrode layer is arranged on the induction region 6 of substrate 1; the sensing electrode layer comprises a plurality of first sensing electrode 8 and a plurality of second sensing electrodes 9 that extend along second direction that extend along first direction; first sensing electrode 8 and second sensing electrode, 9 interlaced formation induction arrays; periphery line 2 and external line 3 all are arranged on the neighboring area 7; one end of each peripheral line 2 is connected with one first sensing electrode 8 or second sensing electrode 9; IC chip 4 is fixedly installed on the neighboring area 7; connect in the IC chip 4 and hold connection projection 10 to be connected by the other end of aeolotropic conductive film 5 and periphery lead-in wire 2; the external connection end of IC chip 4 connects projection 11 and is connected by connecing end 12 in aeolotropic conductive film 5 and the external line 3; the external end 13 of external line 3 is connected with flexible circuit board 14, also covers one deck protection glue-line 15 on neighboring area 7.
Embodiment two
As shown in Figure 4 and Figure 5, on the basis of embodiment one, increased and covered layer 16.Cover layer 16 and be arranged on the neighboring area 7 of substrate 1, peripheral line 2 and external line 3 all are arranged on to be covered on the layer 16.
Embodiment three
As Fig. 6, Fig. 7 and shown in Figure 8, under the identical situation of other parts and embodiment one or embodiment two, its difference is: external line 3 is not connected with external circuit by flexible circuit board, but also comprises butt end 17, vertical conductor 18 and can make external end 13, vertical conductor 18, butt end 17 threes be pressed on pressure mechanism together; Butt end 17 is arranged on the circuit board 19 of external circuit, and the circuit board 19 of external circuit parallels with substrate 1, and butt end 17 is corresponding one by one with external end 13; The two ends of vertical conductor 18 are connected with butt end 17 with external end 13 respectively.Pressure mechanism comprises bonding coat 20, hard frame 21 and screw 22, hard frame 21 is arranged between the circuit board 19 of substrate 1 and external circuit, substrate 1 is bonded together by bonding coat 20 and hard frame 21, and the circuit board 19 of external circuit is locked on the hard frame 21 by screw 22.Wherein vertical conductor 18 is anisotropic conductive rubber; Hard frame 21 also can be a casing.
Embodiment four
As shown in Figure 9, under the identical situation of other parts and embodiment three, its difference is: vertical conductor 18 is metal sheeting 23, and an end of metal sheeting 23 is welded on the butt end 17, and the other end of metal sheeting 23 contacts with external end 13.
In other embodiments, substrate and the external circuit board all can be bonded together by bonding coat and hard frame.
Claims (9)
1. microarray strip one chip capacitance touch screen comprises substrate, the sensing electrode layer, periphery line and external line, the medial surface of substrate is divided into induction region and neighboring area, the sensing electrode layer is arranged on the induction region of substrate, the sensing electrode layer comprises a plurality of first sensing electrode and a plurality of second sensing electrodes that extend along second direction that extend along first direction, the interlaced formation induction arrays of first sensing electrode and second sensing electrode, periphery line and external line all are arranged on the neighboring area, one end of each peripheral line is connected with one first sensing electrode or second sensing electrode, it is characterized in that: also comprise the IC chip; The IC chip is fixed on the neighboring area; Connect end in the IC chip and be connected, connect the end in the external connection end of IC chip and the described external line and be connected with the other end of peripheral line.
2. microarray strip one chip capacitance touch screen as claimed in claim 1 is characterized in that: comprise also and cover layer, cover layer and be arranged on the neighboring area of substrate that peripheral line and external line all are arranged on to be covered on the layer.
3. microarray strip one chip capacitance touch screen as claimed in claim 1 or 2, it is characterized in that: also comprise the aeolotropic conductive film, the IC chip is bonded together by the neighboring area of aeolotropic conductive film and substrate, connects end, external connection end in the IC chip and all is connected by connecing the end in the conductive metal balls in the aeolotropic conductive film and described peripheral cabling, the external line.
4. microarray strip one chip capacitance touch screen as claimed in claim 1 or 2 is characterized in that: also comprise butt end and vertical conductor; The butt end is arranged on the circuit board of external circuit, and the circuit board of external circuit parallels with substrate; The butt end is corresponding one by one with external end, and external end is connected by vertical conductor with the butt end.
5. microarray strip one chip capacitance touch screen as claimed in claim 3 is characterized in that: also comprise butt end and vertical conductor; The butt end is arranged on the circuit board of external circuit, and the circuit board of external circuit parallels with substrate; The butt end is corresponding one by one with external end, and external end is connected by vertical conductor with the butt end.
6. microarray strip one chip capacitance touch screen as claimed in claim 4 is characterized in that: described vertical conductor is an elastic body, also comprises making external end, vertical conductor, butt end three be pressed on pressure mechanism together.
7. microarray strip one chip capacitance touch screen as claimed in claim 5 is characterized in that: described vertical conductor is an elastic body, also comprises making external end, vertical conductor, butt end three be pressed on pressure mechanism together.
8. microarray strip one chip capacitance touch screen as claimed in claim 6 is characterized in that: described vertical conductor is a conductive rubber.
9. microarray strip one chip capacitance touch screen as claimed in claim 7 is characterized in that: described vertical conductor is a metal sheeting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206671261U CN201927012U (en) | 2010-12-13 | 2010-12-13 | One-chip capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206671261U CN201927012U (en) | 2010-12-13 | 2010-12-13 | One-chip capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927012U true CN201927012U (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206671261U Expired - Lifetime CN201927012U (en) | 2010-12-13 | 2010-12-13 | One-chip capacitive touch screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN201927012U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331895A (en) * | 2011-10-27 | 2012-01-25 | 汕头超声显示器（二厂）有限公司 | Anti-static singlechip capacitive touch screen |
| CN102629177A (en) * | 2012-03-30 | 2012-08-08 | 敦泰科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN102929465A (en) * | 2012-11-12 | 2013-02-13 | 汕头超声显示器（二厂）有限公司 | Capacitive touch displaying assembly and manufacturing method of assembly |
| CN102968212A (en) * | 2012-11-22 | 2013-03-13 | 广东欧珀移动通信有限公司 | Flexible printed circuit (FPC) structure for single-layer multipoint touch screen, touch screen and terminal device |
| CN103336640A (en) * | 2013-06-18 | 2013-10-02 | 苏州市健邦触摸屏技术有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN104035613A (en) * | 2013-03-06 | 2014-09-10 | 马克西姆综合产品公司 | Chip-on-glass for touch applications |
| CN105138175A (en) * | 2015-09-06 | 2015-12-09 | 黄石瑞视光电技术股份有限公司 | Industrial control touch screen and manufacturing method thereof |
| CN106775120A (en) * | 2017-01-16 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of contact panel and touch control display apparatus |
| CN111708466A (en) * | 2020-07-28 | 2020-09-25 | 武汉天马微电子有限公司 | Touch display panel and display device |
-
2010
- 2010-12-13 CN CN2010206671261U patent/CN201927012U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331895B (en) * | 2011-10-27 | 2013-08-28 | 汕头超声显示器（二厂）有限公司 | Anti-static singlechip capacitive touch screen |
| CN102331895A (en) * | 2011-10-27 | 2012-01-25 | 汕头超声显示器（二厂）有限公司 | Anti-static singlechip capacitive touch screen |
| 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 |
| CN102929465A (en) * | 2012-11-12 | 2013-02-13 | 汕头超声显示器（二厂）有限公司 | Capacitive touch displaying assembly and manufacturing method of assembly |
| CN102968212B (en) * | 2012-11-22 | 2015-12-23 | 广东欧珀移动通信有限公司 | For the FPC structure of individual layer multi-point touch panel, touch-screen and terminal device |
| CN102968212A (en) * | 2012-11-22 | 2013-03-13 | 广东欧珀移动通信有限公司 | Flexible printed circuit (FPC) structure for single-layer multipoint touch screen, touch screen and terminal device |
| CN104035613A (en) * | 2013-03-06 | 2014-09-10 | 马克西姆综合产品公司 | Chip-on-glass for touch applications |
| CN103336640A (en) * | 2013-06-18 | 2013-10-02 | 苏州市健邦触摸屏技术有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN105138175A (en) * | 2015-09-06 | 2015-12-09 | 黄石瑞视光电技术股份有限公司 | Industrial control touch screen and manufacturing method thereof |
| CN105138175B (en) * | 2015-09-06 | 2018-01-30 | 黄石瑞视光电技术股份有限公司 | Industry control touch-screen and preparation method thereof |
| CN106775120A (en) * | 2017-01-16 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of contact panel and touch control display apparatus |
| WO2018129945A1 (en) * | 2017-01-16 | 2018-07-19 | 京东方科技集团股份有限公司 | Touch panel and touch display device |
| US10739886B2 (en) | 2017-01-16 | 2020-08-11 | Boe Technology Group Co., Ltd. | Touch panel and touch display device |
| CN111708466A (en) * | 2020-07-28 | 2020-09-25 | 武汉天马微电子有限公司 | Touch display panel and display device |
| CN111708466B (en) * | 2020-07-28 | 2023-04-14 | 武汉天马微电子有限公司 | Touch display panel and display device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
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| CX01 | Expiry of patent term |