CN202677364U - Capacitive touch screen using single-layer triangular pattern - Google Patents
Capacitive touch screen using single-layer triangular pattern Download PDFInfo
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- CN202677364U CN202677364U CN2012203651513U CN201220365151U CN202677364U CN 202677364 U CN202677364 U CN 202677364U CN 2012203651513 U CN2012203651513 U CN 2012203651513U CN 201220365151 U CN201220365151 U CN 201220365151U CN 202677364 U CN202677364 U CN 202677364U
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- touch screen
- capacitive touch
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- 239000002356 single layer Substances 0.000 title abstract description 12
- 239000010410 layer Substances 0.000 abstract description 29
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 abstract description 2
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Abstract
The utility model discloses a capacitive touch screen using a single-layer triangular pattern. A triangular sensor adopted by the capacitive touch screen is a single-layer vertical triangle, a left channel and a right channel alternate to form an ITO (Indium Tin Oxide) pattern layer covering the screen, one triangular sensor represents one channel, the width of a rectangle formed by alternating the left channel and the right channel plus one channel gap is one space of the pattern, and the triangular sensor is a direct output pin and is bonded to the input pin of a FPC (Flexible Printed Circuit). Compared with the double-layer structure, the capacitive touch screen using a single-layer triangular pattern omits an optical transparent adhesive and a thin film, the cost is reduced, the yield rate is increased, and the structural thickness of the capacitive touch screen is reduced.
Description
Technical field
The utility model relates to the touch-screen field, particularly a kind of capacitive touch screen that adopts the individual layer triangle pattern.
Background technology
Capacitive touch screen and traditional resistive touch screen have very large difference.Resistive touch screen the time can only be judged a touch point in work at every turn, if touch point just can not be made correct judgement more than two, so resistive touch screen such as is only applicable to click, pull at some simple judgements.And the multi-point touch of capacitive touch screen then can be decomposed into user's touch multi-point signal and two work of judgement significance signal of gathering, and finishes the judgement of compound action.Capacitive touch screen is to utilize the electric current induction of human body to carry out work, when finger touch is on metal level, because the electric field of human body, user and touch-surface form the electric capacity of a coupling, for high-frequency current, electric capacity is direct conductor, can calculate accurately the position of touch point behind the master control IC by processing signals by the touch-control sensing output signal.
Adopt the projecting type capacitor formula touch screen technology resistive technologies more general than usage comparison more durable, and projectiveness is better, increasing touch-screen developer and this class touch-screen of commercialization.In addition, the average price gap between electric capacity and the resistance type of display constantly reduces, so that capacitance plate technology more attractive.And the multiple point touching that this scheme adopts allows to select arbitrarily between many fingers and operate exactly, can greatly enrich action type like this.And multipoint operation usually can realize intelligence gesture identification, more humane user interface is provided.The multiple point touching technology can significantly not increase in the situation of cost simultaneously, makes operation be easy to be understood by the user and grasp.
Yet the capacitance plate of main flow is to adopt double-decker at present, and one deck is for driving layer, and one deck is inductive layer, but it has certain disadvantages relatively:
1, cost is high: double-decker is generally the structural framing of cover plate+optical lens gelatin+film+optical lens gelatin+film, uses starting material many, and cost is also just high;
2, yield is low: the double-decker production process is generally: film+optical lens gelatin, and+film ,+optical lens gelatin ,+covering four road basic working procedure, operation is more, just manufacture craft is had very high requirement, and yield is just relatively low like this;
3, thickness is thick: the double-decker general thickness is about 1.35mm.
Summary of the invention
For the double-deck shortcoming of capacitance plate, the purpose of this utility model provides a kind of capacitive touch screen of individual layer triangle pattern, thereby reduces production costs, and realizes that the capacitive touch screen yield improves, and reduces capacitive touch screen thickness.
For achieving the above object, the utility model is taked following technical scheme, a kind of capacitive touch screen that adopts the individual layer triangle pattern, the triangle sensor that it adopts is the perpendicular triangle of individual layer, left and right sides passage is staggered to form the ITO(indium tin oxide of cover screen) the figure layer, a triangle sensor represents a passage, about the width of the rectangle that is staggered into of two passages add the spacing that a path clearance is pattern, the triangle sensor is direct output pin, and with the FPC(FPC) input pin binding.
The utility model has the advantages that 1, reduce cost: single layer structure is generally the structural framing of cover plate+optical lens gelatin+film, and the double-decker contrast just saved one deck optical lens gelatin and thin film, has lacked two-layer material, and cost has also just reduced a lot.
2, yield improves: the single layer structure production process is generally: film+optical lens gelatin, + cover two operations just can finish, compare a less two procedures with double-decker, operation is fewer, just lower to the manufacture craft requirement, like this overall yield will improve accordingly.
3, reduce thickness: the single layer structure general thickness is (cover sheet thickness: 0.7mm about 0.875 mm, film thickness: 0.125mm, optical lens gelatin thickness: 0.05mm) lacked double-layer structure, thickness is just thin a lot, the free space of leaving the client for is just more, and so just having wider is adaptability.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model ITO screen body structure synoptic diagram.
Fig. 3 is A place enlarged diagram among Fig. 1.
Among the figure: 1, triangle sensor, 2, output pin, 3, cover plate, 4, the optical lens gelatin, 5, the sensor patterns layer, 6, transparency carrier, 7, maximum influence value sensor.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, referring to Fig. 1 to Fig. 3, a kind of capacitive touch screen that adopts the individual layer triangle pattern, the triangle sensor 1 that it adopts is the perpendicular triangle of individual layer, left and right sides passage 2 is staggered to form the ITO figure layer of cover screen, a triangle sensor represents a passage, about the width of the rectangle that is staggered into of two passages add the spacing that a path clearance is pattern, triangle sensor 1 is direct output pin 2, and binds with the input pin of FPC.
Embodiment:A preferred forms of the present utility model is,
A kind of capacitive touch screen that adopts the individual layer triangle pattern, its triangle ITO Model Design is to adopt the pattern of perpendicular triangle to design, as shown in Figure 1, triangle sensor 1 is individual layer, left and right sides passage is staggered to form the ITO figure layer of cover screen, passage of triangle sensor 1 expression, about the width of the rectangle that is staggered into of two passages add the spacing that a path clearance is pattern.Triangle sensor 1 adopts the direct output pin 2 of straight triangle and the input pin of FPC to bind, and does not therefore need to connect with the elargol line.
The capacitive touch screen of the utility model single layer structure, formed for film or glass superpose successively by cover plate 3, optical lens gelatin 4, sensor patterns layer 5 and transparency carrier 6, the triangle sensor 1 of designed single layer structure comprises transparency carrier 6 and is overlying on the conductive layer of triangle sensor 1 on the transparency carrier 6, as shown in Figure 2.Conductive layer comprises electrode strip, and every described electrode strip is connected with the wire that is connected with external circuit more than two; The electrode strip of levels is mutually vertical, is respectively column electrode matrix and row electrode matrix, and the cooperation by the row, column matrix comes coordinate identification, and column electrode number and row number of electrodes depend primarily on screen size, and screen is larger, and needed electrode number is also just more.And be provided with the touch sensible parts on the described conductive layer, described touch sensible parts then are triangle sensor 1.
Because be triangle ITO pattern, so the influence value size of the every nearly far-end of sensor (major part microcephaly) has obvious size differences, the influence value of maximum influence value sensor 7 and those two sensors that are adjacent is compared, determine the concrete coordinate position of touch point by ratio, as shown in Figure 3, find first maximum influence value sensor 7, more adjacent with him two sensors and influence value compare to determine the accurate coordinate of touch point.
The utility model has following advantage: 1, performance: realized the touch effect of multilayer at single layer structure, and improved touch precision and reaction sensitivity; Precision is higher when relatively touching: because people's finger size is relatively certain, finger caused electric capacity change value in the touch process also is relatively certain, if internal capacitance is excessive, after can causing touching, the capacitance variations that the capacitance variations that causes produces with being disturbed is similar, thus the touch of identification that can not be correct finger.So require projecting type capacitor screen internal capacitance the smaller the better, the ratio of the electric capacity change value that causes after the finger touch like this and the value of former electric capacity is just larger.The larger representative signal to noise ratio (S/N ratio) of ratio is larger, and is also just more accurate to the judgement of touch location.The size of this electric capacity depends on the resistance size of internal electrode bar.The electrode strip resistance is larger, and the electric capacity of generation is just larger.The general electrode strip resistance of individual layer triangle is 10K Ω, and the general electrode strip resistance of double-decker is 23K Ω.To shield internal capacitance than double-layer capacitance little for individual layer capacitance plate internal capacitance like this, and signal to noise ratio (S/N ratio) can be better.Shorten sweep time, improve signal to noise ratio (S/N ratio), make it touch accurately, be quick on the draw: because the working method of capacitance touch screen by control chip line by line/row scan, one of every scanning, all be to finish by the work that discharges and recharges, so electric capacity is larger, need so time of discharging and recharging also just corresponding longer.
2, price and yield: because the singularity of single layer structure is being lacked 2 layers of material than double-decker aspect the materials, one deck optical lens gelatin thin film, with double-decker than the material expense that almost is a half soon, certainly more economical on the price; Lacked in addition two-layer material, just lacked two procedures on manufacture craft, so not only reduced the time of making, also improved the yield of making, the shortening of time and the raising of yield also make price lower more economical.
3, thickness is thinner: compare with double-decker, single layer structure has lacked 2 layers of structure, at thickness obvious advantage is arranged, and thin thickness is left the larger space of client for, can avoid some interference problems, more can satisfy client's requirement.
4, usage range is wide: the size of the suitable touch-screen of this design proposal is very extensive at present, because its performance is good, price is low, the characteristics such as thin thickness.And support again multi-point touch and gesture identification simultaneously, practicality is also more intense;
Capacitive technologies is wear-resistant in addition, the life-span is long, and maintenance cost was low when the user used, so the whole running cost of manufacturer can further reduce.This has also indicated direction for the development prospect of touch-screen industry.
The utility model is realized the design proposal of multiple point touching by structure and the electrode design of capacitive touch screen for capacitive touch screen provides a kind of monofilm ITO.Actual verification result shows, under one hand referred to touch situation with two finger touch, designed touch-screen can accurately be quoted coordinate points.The scheme that proposes provides a kind of simple designs thinking and method for low-cost capacitive touch screen.
Claims (1)
1. capacitive touch screen that adopts the individual layer triangle pattern, it is characterized in that, the triangle sensor that it adopts is the perpendicular triangle of individual layer, left and right sides passage is staggered to form the ITO figure layer of cover screen, a triangle sensor represents a passage, about the width of the rectangle that is staggered into of two passages add the spacing that a path clearance is pattern, the triangle sensor is direct output pin, and with the input pin binding of FPC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203651513U CN202677364U (en) | 2012-07-26 | 2012-07-26 | Capacitive touch screen using single-layer triangular pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203651513U CN202677364U (en) | 2012-07-26 | 2012-07-26 | Capacitive touch screen using single-layer triangular pattern |
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| Publication Number | Publication Date |
|---|---|
| CN202677364U true CN202677364U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012203651513U Expired - Fee Related CN202677364U (en) | 2012-07-26 | 2012-07-26 | Capacitive touch screen using single-layer triangular pattern |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103488338A (en) * | 2013-08-30 | 2014-01-01 | 江西合力泰科技股份有限公司 | Method for improving bonding of touch screen |
| WO2014188058A1 (en) * | 2013-05-21 | 2014-11-27 | Nokia Corporation | Capacitive touch sensor |
-
2012
- 2012-07-26 CN CN2012203651513U patent/CN202677364U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014188058A1 (en) * | 2013-05-21 | 2014-11-27 | Nokia Corporation | Capacitive touch sensor |
| US9141240B2 (en) | 2013-05-21 | 2015-09-22 | Nokia Technologies Oy | Capacitive touch sensor |
| CN103488338A (en) * | 2013-08-30 | 2014-01-01 | 江西合力泰科技股份有限公司 | Method for improving bonding of touch screen |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 330096 Nanchang high tech Development Zone, Jingdong Road, No. 1699, No. Patentee after: JIANGXI LIANCHUANG ELECTRONICS CO.,LTD. Address before: 330096 Nanchang high tech Development Zone, Jingdong Road, No. 1699, No. Patentee before: JIANGXI LIANCHUANG ELECTRONIC Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 330096 Nanchang high tech Development Zone, Jingdong Road, No. 1699, No. Patentee after: JIANGXI LIANCHUANG ELECTRONIC Co.,Ltd. Address before: 330096 Nanchang high tech Development Zone, Jingdong Road, No. 1699, No. Patentee before: JIANGXI LIANCHUANG ELECTRONICS CO.,LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |