CN102819360B - Capacitance touch screen and there is the contactor control device of this capacitance touch screen - Google Patents
Capacitance touch screen and there is the contactor control device of this capacitance touch screen Download PDFInfo
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- CN102819360B CN102819360B CN201110152636.4A CN201110152636A CN102819360B CN 102819360 B CN102819360 B CN 102819360B CN 201110152636 A CN201110152636 A CN 201110152636A CN 102819360 B CN102819360 B CN 102819360B
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Abstract
The invention discloses a kind of capacitance touch screen, comprising: transparency carrier; Multiple first component be parallel to each other, described multiple first component is formed on described transparency carrier; Multiple spaced second component, described multiple second component is formed in the top of first component, and described second component becomes the first predetermined angular with described first component; With many groups the 3rd parts, described many groups the 3rd parts and described multiple second component are positioned at same plane, and often group the 3rd parts are all connected with in described multiple second component, and arrange spaced reciprocally, wherein, setting interlaced with each other between two group of the 3rd parts that two adjacent second components are corresponding.The invention also discloses a kind of contactor control device with above-mentioned capacitance touch screen.The present invention, by adopting branch's cross structure, can increase the induction range of driver unit and detection part, locate touch point more accurately.In the manufacture course of products of reality, can reduce costs, and enhance product performance.
Description
Technical field
The present invention relates to technical field of touch control, the capacitance touch screen of particularly a kind of improvement and there is the contactor control device of this capacitance touch screen.
Background technology
Touch-screen utilizes its mechanical loss little and the feature that volume is little, has been widely used in each electronic product.Common touch-screen has self-capacitance and mutual capacitance printed circuit board arrangement.Self-capacitance can only realize single-point and touch, if two point touch can produce terrible point.Therefore, the application of mutual capacitance type printed circuit board arrangement is more extensive.
Fig. 1 is the planimetric map of existing double-deck mutual capacitance type printed circuit board arrangement.Longitudinal black bar is the capacitance signal test side 200 ' of top layer, and be laterally pumping signal providing end 100 ', the two is mutually vertical.When touching object (as finger) non-touch screen, the negative charge of excitation end 100 ' dominant absorption test side 200 ', the capacitance that both are formed is C1.When touching object (as finger) touch screen, because distance signal test side, a big chunk pumping signal providing end 100 ' 200 ' is comparatively far away and finger is nearer, therefore can transfer to absorb the negative charge on finger, correspondingly the electric charge of absorption signal test side 200 ' will reduce, and the mutual capacitance therefore formed between input end 200 ' and pumping signal providing end 100 ' can reduce.Detected the size of mutual capacitance variable quantity by corresponding testing circuit, can judge whether contact is effective contact, and the coordinate of finger on screen can be calculated by corresponding computing method, realize location.
There is such problem in the input end of existing mutual capacitance type touch screen and the arrangement of pumping signal providing end: when touching object (as finger) is between two input ends, or time only close to one of them pumping signal providing end, another pumping signal providing end will only have small induction, therefore induced signal can not form stable accurate linear change, thus produces positioning error.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For achieving the above object, first aspect present invention proposes a kind of capacitance touch screen, comprising: transparency carrier; Multiple first component be parallel to each other, described multiple first component is formed on described transparency carrier; Multiple spaced second component, described multiple second component is formed in the top of first component, and described second component becomes the first predetermined angular with described first component; With many groups the 3rd parts, described many groups the 3rd parts and described multiple second component are positioned at same plane, and often group the 3rd parts are all connected with in described multiple second component, and arrange spaced reciprocally, wherein, setting interlaced with each other between two group of the 3rd parts that two adjacent second components are corresponding.
The capacitance touch screen of the embodiment of the present invention, by adopting branch's cross structure, can increase the induction range of driver unit and detection part, more be conducive to accurately locating touch point.In the manufacture course of products of reality, can reduce costs, and enhance product performance.
Second aspect present invention proposes a kind of contactor control device, comprising: touch-screen, and described touch-screen is the capacitance touch screen according to first aspect; One I/O interface group, each the I/O interface in a described I/O interface group is connected with a described first component; 2nd I/O interface group, each the I/O interface in described 2nd I/O interface group is connected with a described second component; And controller, described controller is connected with the 2nd I/O interface group with a described I/O interface group respectively, detects according to the change of electric capacity between described first component and described second component the position that described touch-screen is touched.
The contactor control device of the embodiment of the present invention, by adopting the capacitance touch screen with above-mentioned cross structure, adds the surveyed area of the change of the mutual capacitance detecting first component and second component, improves accuracy of detection and the sensing range of contactor control device.In addition, whole screen can be widened when chip I/O interface quantity is identical, or the I/O interface quantity of connection can be reduced under the specification of same screen, reduce production cost.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the planimetric map of existing double-deck mutual capacitance type printed circuit board arrangement;
Fig. 2 is the schematic diagram of the capacitance touch screen of one embodiment of the invention;
Fig. 3 is the schematic diagram having chinampa capacitance touch screen of one embodiment of the invention; And
Fig. 4 is the structural representation of the contactor control device of the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Transparency carrier, multiple first component, multiple spaced second component and many groups the 3rd parts be parallel to each other are comprised according to the capacitance touch screen of the embodiment of the present invention.Multiple first component is formed on described transparency carrier.Multiple second component is formed in the top of first component, and second component become the first predetermined angular with first component and with first component spaced a predetermined distance, thus can realize insulating between first component and second component.Many groups of the 3rd parts and multiple second component are positioned at same plane, and often group the 3rd parts are all connected with in multiple second component, and many groups the 3rd parts equally spaced arrange, wherein, setting interlaced with each other between two group of the 3rd parts that two adjacent second components are corresponding.
In an example of the present invention, the first predetermined angular can be 90 degree, and namely second component is vertical with first component is arranged.
It should be noted that, first component is driver unit, and second component is detection part, namely covers excitation end above transparency carrier, and excitation end top is test side.
Below with reference to Fig. 2 and Fig. 3, the capacitance touch screen 1 according to the embodiment of the present invention is described.
As shown in Figure 2, comprise the multiple first component 100, multiple spaced second component 200 and many groups the 3rd parts 300 that are parallel to each other according to the capacitance touch screen 1 of the embodiment of the present invention, multiple 3rd parts 300 be wherein connected with a second component 200 are called one group of the 3rd parts 300.Many groups of the 3rd parts 300 are positioned at same plane with multiple second component 200, and many groups the 3rd parts 300 arrange spaced reciprocally, setting interlaced with each other between two group of the 3rd parts 300 of adjacent second component 200 correspondence.Thus, by this cross structure, the induction range of driver unit and detection part can be increased, no matter touch which position of detection part, all can have corresponding induction, and the signal of induction has accurate size variation.
In addition, when I/O mouth quantity is identical, if adopt the present invention, the distance between two detection parts can increase and is twice, and the width of screen can widen one times.Therefore, in the manufacture course of products of reality, production cost can be reduced to a certain extent.
In one embodiment of the invention, the 3rd parts 300 comprise the first branch 310 and multiple second branch 320.First branch 310 is connected with second component 200, and the first branch 310 and second component 200 one-tenth second predetermined angular, wherein said second predetermined angular can be 90 degree, also can be any acute angle.Multiple second branch 320 is connected with the first branch 310 respectively, and multiple second branch 320 arranges spaced reciprocally.Thus, by arranging multiple second branch 320, the region that detection part receives pumping signal can be increased, and increase the intensity of measured signal, being conducive to detecting touch point.
It should be understood that the length of multiple second branch 320 can be identical, also can be different, such as, length the closer to the second branch 320 of second component 200 in multiple second branch 320 can be larger.
According to above-described embodiment, particularly, the first branch 310 among two group of the 3rd adjacent parts 300 in one group of the 3rd parts 300 is interlaced with each other with another first branch 310 organized in the 3rd parts 300.
Be illustrated in figure 3 the partial schematic diagram having chinampa capacitance touch screen of one embodiment of the invention, between interlaced two the first branches 310, be provided with at least one chinampa structure 400.Chinampa structure 400 is a kind of conductive material, such as ITO.When distance between detection part and driver unit is constant, chinampa structure 400 just looks like the bridge between detection part and driver unit, in fact the distance furthered between detection part and driver unit is equivalent to by the bridge joint of chinampa structure 400, initial mutual capacitance value between detection part and driver unit is increased, thus the variable quantity of the mutual capacitance after touch is provided, and make it become one to stablize accurate linear change, be convenient to detect, improve the precision judged.
It should be understood that and can be provided with a chinampa structure 400 between two the first branches 310, also can be provided with multiple chinampas structure 400, multiple chinampas structure 400 along vertically stacked, and can be provided with predetermined interval between adjacent two chinampa structures.Certainly, multiple chinampas structure 400 also can be other space arrangement mode.By regulating the size of chinampa structure 400, or regulating the spacing distance between multiple chinampas structure 400, the scope of mutual capacitance variable quantity after touching can be regulated, make it be more conducive to detect.
Below with reference to Fig. 4, the contactor control device according to the embodiment of the present invention is described.
As shown in Figure 4, the capacitance touch screen 1 that the above embodiment of the present invention provides is comprised according to the contactor control device of the embodiment of the present invention, one I/O interface group 2, 2nd I/O interface group 3 and controller 4, each I/O interface wherein in an I/O interface group 2 is connected with a first component 100, each I/O interface in 2nd I/O interface group 3 is connected with a second component 200, controller 4 is connected with the 2nd I/O interface group 3 with a described I/O interface group 2 respectively, the position that described touch-screen is touched is detected according to the variable quantity of mutual capacitance between first component 100 and second component 200.
When touching object (as finger) is near capacitance touch screen 1, negative charge on first component 100 meeting absorption portion finger, therefore the electric charge absorbing second component 200 can corresponding reduction, thus the mutual capacitance value between first component 100 and second component 200 is reduced.Controller 4 gathers the electric charge of first component 100 and second component 200 by an I/O interface group 2 and the 2nd I/O interface group 3, and calculate the variable quantity of the mutual capacitance between first component 100 and second component 200, touch point and the touch action of touching object then can be calculated according to the variable quantity of mutual capacitance.Owing to adding the chinampa structure 400 of conductive material between first component 100 and second component 200, actually reduce the distance between first component 100 and second component 200, initial mutual capacitance value is made to become large, thus capacitance variation amount after increasing touch, controller 4 is made to detect the surveyed area also broadening of the variable quantity of mutual capacitance, the reaction of capacitance to the touch action of touching object is meticulousr, improves the linearity of contactor control device.
According to the contactor control device of the embodiment of the present invention, owing to increasing chinampa structure, first component in capacitance touch screen and the distance between second component reduce, thus add the surveyed area of the change of the mutual capacitance detecting first component and second component, improve accuracy of detection and the sensing range of contactor control device.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (7)
1. a capacitance touch screen, is characterized in that, comprising:
Transparency carrier;
Multiple first component be parallel to each other, described multiple first component is formed on described transparency carrier;
Multiple spaced second component, described multiple second component is formed in above described first component, and described second component become the first predetermined angular with described first component and with described first component spaced a predetermined distance; With
Many groups of the 3rd parts, described many groups the 3rd parts and described multiple second component are positioned at same plane, and often group the 3rd parts are all connected with in described multiple second component, and arrange spaced reciprocally,
Wherein, setting interlaced with each other between two group of the 3rd parts that two adjacent second components are corresponding; Described 3rd parts comprise:
First branch, described first branch is connected with described second component, and described first branch becomes the second predetermined angular with described second component; With
Multiple second branch, described multiple second branch is connected with described first branch respectively, and described multiple second branch arranges spaced reciprocally.
2. capacitance touch screen according to claim 1, is characterized in that, the first branch among two group of the 3rd adjacent parts in one group of the 3rd parts and another the first branch organized in the 3rd parts interlaced with each other.
3. capacitance touch screen according to claim 2, is characterized in that, is also provided with at least one chinampa structure between interlaced two the first branches.
4. capacitance touch screen according to claim 3, is characterized in that, described chinampa structure comprises conductive material.
5. capacitance touch screen according to claim 1, is characterized in that, described first component is driver unit, and described second component is detection part.
6. capacitance touch screen according to claim 1, is characterized in that, described first component is mutually vertical with described second component.
7. a contactor control device, is characterized in that, comprising:
Touch-screen, described touch-screen is the capacitance touch screen as described in any one of claim 1-6;
One I/O interface group, each the I/O interface in a described I/O interface group is connected with a described first component;
2nd I/O interface group, each the I/O interface in described 2nd I/O interface group is connected with a described second component; With
Controller, described controller is connected with the 2nd I/O interface group with a described I/O interface group respectively, detects according to the variable quantity of mutual capacitance between described first component and described second component the position that described touch-screen is touched.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110152636.4A CN102819360B (en) | 2011-06-08 | 2011-06-08 | Capacitance touch screen and there is the contactor control device of this capacitance touch screen |
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| CN201110152636.4A CN102819360B (en) | 2011-06-08 | 2011-06-08 | Capacitance touch screen and there is the contactor control device of this capacitance touch screen |
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| CN102819360A CN102819360A (en) | 2012-12-12 |
| CN102819360B true CN102819360B (en) | 2016-04-27 |
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| CN109126117B (en) * | 2017-10-27 | 2021-04-13 | 上海飞智电子科技有限公司 | Touch method, touch device and touch system applied to capacitive touch screen |
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| TW200844827A (en) * | 2007-05-11 | 2008-11-16 | Sense Pad Tech Co Ltd | Transparent touch panel device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100328208A1 (en) * | 2009-06-12 | 2010-12-30 | Austin Steven M | Electrode patterns for capacitance sensitive touchpad |
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| TW200844827A (en) * | 2007-05-11 | 2008-11-16 | Sense Pad Tech Co Ltd | Transparent touch panel device |
| CN101672660A (en) * | 2008-04-10 | 2010-03-17 | 爱特梅尔公司 | Capacitive position sensor |
| CN101943975A (en) * | 2009-07-09 | 2011-01-12 | 敦泰科技有限公司 | Ultra-thin mutual capacitance touch screen and combined ultra-thin touch screen |
| CN102043532A (en) * | 2009-10-22 | 2011-05-04 | 爱特梅尔公司 | Sense electrode spine interpolation |
| CN201570006U (en) * | 2009-10-23 | 2010-09-01 | 深圳市汇顶科技有限公司 | Capacitive sensing equipment and electronic device with touch function |
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Effective date of registration: 20200108 Address after: 518119 1 Yanan Road, Kwai Chung street, Dapeng New District, Shenzhen, Guangdong Patentee after: Shenzhen BYD Microelectronics Co., Ltd. Address before: BYD 518118 Shenzhen Road, Guangdong province Pingshan New District No. 3009 Patentee before: Biyadi Co., Ltd. |
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Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. |