CN201266369Y - Capacitance touch screen - Google Patents
Capacitance touch screen Download PDFInfo
- Publication number
- CN201266369Y CN201266369Y CNU2008200948574U CN200820094857U CN201266369Y CN 201266369 Y CN201266369 Y CN 201266369Y CN U2008200948574 U CNU2008200948574 U CN U2008200948574U CN 200820094857 U CN200820094857 U CN 200820094857U CN 201266369 Y CN201266369 Y CN 201266369Y
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- touch screen
- screen
- capacitive touch
- electrode
- working lining
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Abstract
The utility model is applicable to the field of touch screens and provides a capacitance type touch screen which comprises a glass substrate; the touch screen also comprises a working layer loading a voltage and adhered on one surface of the glass substrate, an electrode layer which is arranged at the periphery of the working layer in section shape and electrically connected with the working layer, and a first protection layer adhered on the working layer. In the utility model, the electrode layer of the capacitance type touch screen is arranged on the four sides of the working layer in section shape; each section of electrode on the same side is respectively and independently added with the same AC voltage; and the proportion between the section electrode and a side frame resistance can be flexibly arranged, thus leading the touch screen to be manufactured into any size.
Description
Technical field
The utility model belongs to the touch-screen field, relates in particular to a kind of capacitive touch screen.
Background technology
Touch-screen has entered every field as a kind of human-computer interaction interface, especially is widely used in portable electric appts and common query equipment.Capacitive touch screen is to utilize touch-surface to combine with static between the human body to produce capacitance variations, detects its coordinate from the induced current that produces.
Capacitive touch screen is divided into projected capacitive touch screen and surface capacitance type touch screen, wherein the sensor of projected capacitive touch screen adopts the two-layer electrode structure, resolution is lower, can not carry out the text input well, generally is applied in the button guidance panel; And the sensor of surface capacitance type touch screen adopts the single-layer electrodes structure, and the resolution height is mainly used in the large-scale common query equipment at present.
Fig. 1 shows the structure of electrode and resistor network in the existing surface capacitance type touch screen, on four corners of working lining, four electrodes are arranged, ac signal which injects AC signal by four corner electrodes to the touch place, voltage acts on four corners of screen induction zone and forms a stationary electric field, when the finger contact screen, finger causes electric current with the coupling capacitance that the touch-screen working lining forms, and measures by controller, according to the difference of electric current, can calculate the position, touch point four corner ratios.Therefore pincushion distortion owing to causing to the corner electrode making alive in the voltage field distribution, for fear of pincushion distortion, need come the correct for both pincushion distortion by the resistor network of complexity, forms the linearization electric field; Though yet the resistor network that utilizes the frame complexity is proofreaied and correct this mode of linear distortion effectively, but linear distortion still exists, can not be affected in the use of the large-size screen monitors more than 10 cun, but after the miniaturization, when 10 cun screens are following, it is more outstanding that this influence will become, and influences the touch-screen location; Simultaneously, the figure of the resistor network in the existing surface capacitance type touch screen is very complicated, is difficult to it is produced on the undersized touch-screen.For these reasons, existing surface capacitance type touch screen miniaturization difficulty relatively.
The utility model content
The purpose of this utility model is to provide a kind of capacitive touch screen, is intended to solve the problem of existing surface capacitance type touch screen miniaturization difficulty.
The utility model is achieved in that a kind of capacitive touch screen, comprises glass substrate, and described touch-screen comprises:
The working lining of carrying voltage is attached on the surface of described glass substrate;
Electrode layer, the section of being shape be distributed in described working lining around, be electrically connected described working lining;
First protective seam is attached on the described working lining.
Another purpose of the present utility model is to provide a kind of equipment that adopts above-mentioned capacitive touch screen.
In the utility model, the electrode layer section of the being shape of capacitive touch screen is distributed on the four edges of working lining, add identical alternating voltage on each segment electrode on same limit respectively separately, the ratio of segment electrode and frame resistance can be provided with flexibly, makes touch-screen can be made into the arbitrary dimension size.
Description of drawings
Fig. 1 is the structural representation of electrode and resistor network in the surface capacitance type touch screen that provides of prior art;
Fig. 2 is the cross section structure synoptic diagram of the capacitive touch screen that provides of the utility model;
Fig. 3 is the structural representation of working lining and frame resistance in the capacitive touch screen that provides of the utility model;
Fig. 4 is the structural representation of capacitive touch screen when touch is arranged that the utility model provides;
Fig. 5 is that the capacitive touch screen that the utility model provides has the synoptic diagram of AC signal when the touch point is injected;
Fig. 6 is that the capacitive touch screen that the utility model provides has the synoptic diagram of directions X AC signal when the touch point is injected;
Fig. 7 is that the capacitive touch screen that the utility model provides has the synoptic diagram of Y direction AC signal when the touch point is injected.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the utility model, the electrode layer section of the being shape of capacitive touch screen is distributed on the four edges of working lining, and to adding identical alternating voltage on each segment electrode on same limit respectively separately, the ratio of segment electrode and frame resistance can be provided with flexibly.
Fig. 2 shows the cross section structure of the capacitive touch screen that the utility model provides, and this capacitive touch screen can be applied in various portable electric appts and the common query equipment.
Capacitive touch screen comprises: protective seam 1, electrode layer 2, working lining 3 and glass substrate 4; Wherein, working lining 3 is attached on the glass substrate 4, as the voltage distribution layer; Electrode layer 2 section of being shapes be distributed in working lining 3 around, be electrically connected on working lining 3; Protective seam 1 is attached on the working lining 3, and protection working lining 3 is not damaged.
In the frame region of working lining 3, be provided with electrode and frame resistance, as shown in Figure 3, electrode layer 2 section of being shapes be distributed in working lining 3 around, zone between per two segment electrodes is a frame resistance, the ratio of electrode and frame resistance can be provided with flexibly, the number of electrode also can have different designs, as long as satisfy the linearization requirement.The ratio of frame resistance is big more when design, and easy more minimizing CHARGE DISTRIBUTION is in the gathering of a unsettled end, and the ratio of electrode is big more, and easy more minimizing voltage is distributed in the bending of making alive one end.As an embodiment of the present utility model, in touch-screen technology, the mode of employing screen printing electrode realizes the distribution of frame resistance; The material of making electrode can be the silver slurry, and the resistance of silver slurry is very little, is distributed in the frame region of touch-screen after the silver slurry is interrupted, a segment electrode, one section resistance.
In the utility model, capacitive touch screen also comprises: electro-magnetic screen layer 5, be distributed in the two sides of glass substrate 4 with working lining 3, and the protection touch-screen is not subjected to electromagnetic interference (EMI).As an embodiment of the present utility model, capacitive touch screen further comprises protective seam 6, is attached on the electro-magnetic screen layer 5, and protection electro-magnetic screen layer 5 is not damaged.
In the utility model, working lining 3 can (Indium Tin Oxide, ITO) conductive layer also can be other transparency conducting layer for indium tin oxide; As an embodiment of the present utility model, in coating process, ITO is that the mode by vacuum sputtering is plated on the glass substrate 4, also can all plate ITO on the two sides of substrate of glass, and working lining 3 and electro-magnetic screen layer 5 are produced on the glass substrate.
Fig. 4 shows the structure of capacitive touch screen when touch is arranged that the utility model provides, as conductor near or when touching the capacitive touch screen that the utility model provides, can form coupling capacitance between conductor and the working lining 3, at this moment, the touch location current potential reduces on the working lining 3, each limit electrode injects AC signal to this touch location, thereby voltage compensation is provided.
In theory, the bucking voltage that provides on the frame resistance is many more, just can improve linear distortion more, ideal situation is exactly the loss that does not have voltage signal on the frame, when infinite many bucking voltages are arranged on the frame, its limit is exactly not have voltage drop on the frame, being equivalent to frame is a desirable lead, can cause frame resistance little like this, signal can not be added on the working lining, be working lining by short circuit, therefore can utilize suitable frame resistance to stop working lining by short circuit, voltage signal can afford redress again simultaneously.
In the utility model, electrode layer 2 comprises a plurality of electrodes, and each electrode is drawn by independent lead-in wire.As an embodiment of the present utility model, capacitive touch screen further comprises the flexible print circuit board of the exit that is attached to above-mentioned lead-in wire, and this flexible print circuit board is hot-pressed onto the exit of above-mentioned lead-in wire by conducting resinl; Ac signal which is given the two ends making alive of frame resistance by printed-wiring board (PWB).As shown in Figure 5, each electrode all is connected with ac signal which by switch, and when working lining 3 had been experienced touch, ac signal which injected AC signal for frame resistance by electrode under the control of switch.By inject the size alternating current identical separately to each electrode with phase place, make the edge of working lining 3 have the size AC signal input identical with phase place in the identical moment, guaranteed to flow to the size of current of touch point and the distance of touch point is a kind of linear relationship, thereby improved linear distortion from all directions.
In the utility model, give the independent making alive of each electrode respectively, when touch-screen is worked, timesharing adds the identical alternating voltage of big or small equal phase at X with both sides section shape electrode on the Y both direction, when a direction added alternating voltage, all electrodes of another one direction were all unsettled and do not connect mutually.When the electrode that the capacitive touch screen directions X that provides to the utility model is provided Fig. 6 adds alternating voltage, the synoptic diagram that electric current is injected to the touch point by the directions X electrode; And Fig. 7 is when the electrode of the capacitive touch screen Y direction that provides to the utility model being provided adding alternating voltage, the synoptic diagram that electric current is injected to the touch point by Y direction electrode; Can only have an alternating current on the direction to inject at synchronization, promptly the frame resistance link on the different directions can not inject alternating current to the touch point at synchronization; Control the alternating current that at a time can only have directions X by switch and inject, but can only have the alternating current on the Y direction to inject constantly at another.
In the utility model, the electrode layer section of the being shape of capacitive touch screen is distributed on the four edges of working lining, add identical alternating voltage on each segment electrode on same limit respectively separately, the ratio of segment electrode and frame resistance can be provided with flexibly, make touch-screen can be made into the arbitrary dimension size, help capacitive touch screen popularizing on the portable electronic consumer goods.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1, a kind of capacitive touch screen comprises glass substrate, it is characterized in that, described touch-screen comprises:
The working lining of carrying voltage is attached on the surface of described glass substrate;
Electrode layer, the section of being shape be distributed in described working lining around, be electrically connected described working lining;
First protective seam is attached on the described working lining.
2, capacitive touch screen as claimed in claim 1 is characterized in that, described electrode layer comprises a plurality of electrodes, and each electrode is drawn by independent lead-in wire.
3, capacitive touch screen as claimed in claim 2 is characterized in that, described touch-screen further comprises the flexible print circuit board of the exit that is attached to described lead-in wire.
4, capacitive touch screen as claimed in claim 3 is characterized in that, described flexible print circuit board is hot-pressed onto the exit of described lead-in wire by conducting resinl.
5, capacitive touch screen as claimed in claim 1 is characterized in that, described touch-screen further comprises:
Electro-magnetic screen layer is attached to another surface of described glass substrate.
6, capacitive touch screen as claimed in claim 5 is characterized in that, described touch-screen further comprises:
Second protective seam is attached on the described electro-magnetic screen layer.
7, a kind of equipment is characterized in that, described equipment adopts the described capacitive touch screen of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200948574U CN201266369Y (en) | 2008-06-12 | 2008-06-12 | Capacitance touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200948574U CN201266369Y (en) | 2008-06-12 | 2008-06-12 | Capacitance touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266369Y true CN201266369Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200948574U Expired - Lifetime CN201266369Y (en) | 2008-06-12 | 2008-06-12 | Capacitance touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266369Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853115A (en) * | 2010-05-18 | 2010-10-06 | 程抒一 | Integrated projection-type capacitive touch screen and manufacturing method thereof |
| CN101853114A (en) * | 2010-05-18 | 2010-10-06 | 程抒一 | Capacitive touch screen with electrodes and manufacturing method thereof |
| CN101881900A (en) * | 2010-07-05 | 2010-11-10 | 信利半导体有限公司 | Liquid crystal display screen |
| CN105137749A (en) * | 2015-08-31 | 2015-12-09 | 成都创想智造科技有限公司 | Anti-break intelligent watch with Bluetooth function |
| CN105182727A (en) * | 2015-08-31 | 2015-12-23 | 成都创想智造科技有限公司 | An anti-break intelligent watch for infants |
| CN106155444A (en) * | 2015-05-13 | 2016-11-23 | 三菱电机株式会社 | Face equipment, touch screen and liquid crystal indicator |
| CN108170326A (en) * | 2018-01-19 | 2018-06-15 | 江苏迪佳电子有限公司 | A kind of capacitance touch screen processing technology and its process equipment |
-
2008
- 2008-06-12 CN CNU2008200948574U patent/CN201266369Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853115A (en) * | 2010-05-18 | 2010-10-06 | 程抒一 | Integrated projection-type capacitive touch screen and manufacturing method thereof |
| CN101853114A (en) * | 2010-05-18 | 2010-10-06 | 程抒一 | Capacitive touch screen with electrodes and manufacturing method thereof |
| CN101853114B (en) * | 2010-05-18 | 2013-02-13 | 上海优熠电子科技有限公司 | Capacitive touch screen with electrodes and manufacturing method thereof |
| CN101881900A (en) * | 2010-07-05 | 2010-11-10 | 信利半导体有限公司 | Liquid crystal display screen |
| CN106155444A (en) * | 2015-05-13 | 2016-11-23 | 三菱电机株式会社 | Face equipment, touch screen and liquid crystal indicator |
| CN106155444B (en) * | 2015-05-13 | 2019-06-21 | 三菱电机株式会社 | Face equipment, touch screen and liquid crystal display device |
| CN105137749A (en) * | 2015-08-31 | 2015-12-09 | 成都创想智造科技有限公司 | Anti-break intelligent watch with Bluetooth function |
| CN105182727A (en) * | 2015-08-31 | 2015-12-23 | 成都创想智造科技有限公司 | An anti-break intelligent watch for infants |
| CN108170326A (en) * | 2018-01-19 | 2018-06-15 | 江苏迪佳电子有限公司 | A kind of capacitance touch screen processing technology and its process equipment |
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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 BYD ELECTRONIC COMPONENT CO., LTD. Free format text: FORMER OWNER: BIYADI CO., LTD. Effective date: 20150902 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150902 Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen BYD Electronic Component Co., Ltd. Address before: 518118 Pingshan Road, Pingshan Town, Shenzhen, Guangdong, No. 3001, No. Patentee before: Biyadi Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |