CN103338033A - Capacitance-type touch keys applied to cell phones and a design method thereof - Google Patents
Capacitance-type touch keys applied to cell phones and a design method thereof Download PDFInfo
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- CN103338033A CN103338033A CN2013102208809A CN201310220880A CN103338033A CN 103338033 A CN103338033 A CN 103338033A CN 2013102208809 A CN2013102208809 A CN 2013102208809A CN 201310220880 A CN201310220880 A CN 201310220880A CN 103338033 A CN103338033 A CN 103338033A
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Abstract
Provided is capacitance-type touch keys applied to mobile phones and a design method thereof which relates to the field of cell phones and mobile phones. According to the design method, a dielectric layer, touch capacitance electrodes, and a control circuit are provided. The touch capacitance electrodes are arrange don the dielectric layer. The touch capacitance electrodes are connected with an input terminal of the control circuit. The design method is as follows: 1) the position, the shape, the size of a cell phone key zone and the size of keys are determined, 2) the dielectric layer and touch sensitive electrodes are selected; fonts or figures on the keys can be printed or sprayed on the upper portion or the lower portion of dielectric materials; 3) a corresponding capacitance electrode of each key is connected to a capacitance-type touch key control circuit, and a capacitance-type touch key controller is an independent chip or a part of a system chip; 4) a display zone and the key zone can adopt same or different dielectric materials, and the display zone and the key zone can adopt same display members 5) different contact sensitivity degrees are offered for different keys; functions such as swiping and handwritten recognition, etc., besides key-pressing can be added to the key zone.
Description
Technical field
The present invention relates to mobile phone and mobile phone, especially relate to capacitance type touch key and method for designing thereof for mobile phone.
Background technology
The button design of existing mobile phone and mobile phone all is to adopt machinery or plastic press key all the time, and this type button need have electrically contacting of physics could realize keypress function, and mechanical displacement means is the indispensable parts of the type button.Owing to need physics contact and mechanical movement, so the poor reliability of the type button, failure rate height.In addition, the key area does not have the double functions such as handwriting input and motion identification of doing, and has tangible limitation in function.
In recent years, smart mobile phone or even regular handset all begin to adopt the touch-screen button, the type button places keypress function a part of viewing area, do not need mechanical moving element to realize keypress function, greatly improved the reliability of button, farthest used the available display area of mobile phone, made it not only be used for showing, and be used for button and identification hand-written and that other strokes are relevant.But the mobile phone key cost height that is to use this method to realize, power consumption is big, and the spendable time is short behind the cell-phone charging.And, there is not traditional keyboard like that directly perceived and simple and convenient in the use.Therefore, mobile phone and mobile phone still adopt traditional mechanical key at present greatly.
Chinese patent 201020262507.1 discloses a kind of mobile phone touch keyboard auxiliary input device, comprises panel, a plurality of apertures of hollow out on panel, and the position of aperture, shape are all corresponding with the mobile phone touch key-press, adopt between panel and the mobile phone body to be slidingly connected; Described aperture is divided into three rows, and middle row's aperture is distributed in the middle of the panel, arranges the last lower limb that aperture is distributed in panel up and down, and area is 1/2nd of middle row's aperture, semi-surrounding mobile phone touch key-press.Its purpose is, reduces the height of panel; Misoperation when the present invention can avoid importing effectively, simple in structure, low production cost, volume is little, and employing is slidingly connected between panel and the mobile phone body, can under not use state it be slided, do not influence the normal demonstration of screen, especially be fit to be used with condenser type mobile phone touch keyboard.
Summary of the invention
The object of the present invention is to provide capacitance type touch key and method for designing thereof for mobile phone.
The present invention is provided with dielectric layer, touches capacitance electrode and control circuit, and described touch capacitance electrode is located on the dielectric layer, touches capacitance electrode and is connected with the input of control circuit.
Described dielectric layer can adopt polymethyl methacrylate dielectric layer, acrylic dielectric layer, plastic medium layer etc.
The HX611 chip that described control circuit can adopt Xiamen Haixin Technology Co., Ltd. to produce.
The method for designing of described capacitance type touch key for mobile phone is as follows:
1) determines the size of position, shape, size and each button of mobile phone key district on mobile phone by application requirements;
2) select suitable medium as the dielectric layer that touches electric capacity, select suitable electric conducting material as the touch sensible electrode that touches electric capacity, font on the button or figure can print or be sprayed on dielectric material above or below, dielectric material and capacitance electrode can adopt transparent material, make the light source of " mobile phone main body " can see through capacitance electrode and dielectric material, reach and show or purpose backlight, the device demonstration that the font of button or figure also can use liquid crystal or other to can be used for showing, and need not print or spray;
3) the corresponding capacitance electrode of each button is connected to the corresponding input channel of capacitance type touch key control circuit, the capacitance type touch key controller can be an independently chip, or a part in System on Chip/SoC, the selection of input channel and relevant circuit thereof;
4) identical dielectric material and identical display device can be used with key zone in the viewing area, also can use different dielectric materials and different display devices;
5) according to application requirements, different contact (triggering) sensitivity can be set for the different key on the mobile phone; Can also increase paddling at key zone, the function beyond the buttons such as handwriting recognition.
The present invention adopts capacitance type touch key to replace traditional mechanical key, the principle of capacitance type touch key is the touch by human body (finger), make the direct-to-ground capacitance value of the corresponding position that is touched change, control circuit through capacitance type touch key detects this capacitance variations again, judges with this whether button is touched (pressing).Capacitance type touch key is made up of medium, touch capacitance electrode and control circuit.Touching capacitance electrode can directly spray or be printed on the medium with any electric conducting material, or uses the printing pcb board to place below the medium.Below the medium of key area, i.e. configurable demonstration makes it similar to touch-screen mobile phone, also can not dispose demonstration, and just the same with traditional mechanical key cell phone appearance and keyboard Designing.In the touch key-press district, can increase handwriting input, stroke identification and other function.Like this, but both overcome traditional mechanical key poor reliability and the single shortcoming of function of use, kept again that its cost is low, power consumption is little, uses in intuitively with advantage simply and easily.On the plane of key zone, can increase the function that conventional keys such as handwriting input, stroke and mobile identification can't realize.
Description of drawings
Fig. 1 is the structural representation of the capacitance type touch key embodiment for mobile phone of the present invention.
Embodiment
Following examples will the present invention is further illustrated by reference to the accompanying drawings.
Referring to Fig. 1, the capacitance type touch key embodiment for mobile phone of the present invention is provided with dielectric layer 1, touches capacitance electrode 2 and control circuit, and described touch capacitance electrode 2 is located on the dielectric layer 1, touches capacitance electrode 2 and is connected with the input of control circuit.In Fig. 1, mark 3 is the mobile phone main body.
Described dielectric layer 1 can adopt polymethyl methacrylate dielectric layer, acrylic dielectric layer, plastic medium layer etc.
The HX611 chip that described control circuit can adopt Xiamen Haixin Technology Co., Ltd. to produce.
The method for designing of described capacitance type touch key for mobile phone is as follows:
1) determines the size of position, shape, size and each button of mobile phone key district on mobile phone by application requirements;
2) select suitable medium as the dielectric layer that touches electric capacity, select suitable electric conducting material as the touch sensible electrode that touches electric capacity, font on the button or figure can print or be sprayed on dielectric material above or below, dielectric material and capacitance electrode can adopt transparent material, make the light source of " mobile phone main body " can see through capacitance electrode and dielectric material, reach and show or purpose backlight, the device demonstration that the font of button or figure also can use liquid crystal or other to can be used for showing, and need not print or spray;
3) the corresponding capacitance electrode of each button is connected to the corresponding input channel of capacitance type touch key control circuit, the capacitance type touch key controller can be an independently chip, or a part in System on Chip/SoC, the selection of input channel and relevant circuit thereof;
4) identical dielectric material and identical display device can be used with key zone in the viewing area, also can use different dielectric materials and different display devices;
5) according to application requirements, different contact (triggering) sensitivity can be set for the different key on the mobile phone; Can also increase paddling at key zone, the function beyond the buttons such as handwriting recognition.
The HX611 chip that control circuit of the present invention adopts Xiamen Haixin Technology Co., Ltd. to produce, this chip cost is low, power consumption is little, can control nearly 66 buttons.With the capacitance type touch key that this chip is realized, cost is lower than traditional machinery or plastic press key.When 100ms key scan speed and 3.3V power supply, electric current is 3.5 μ A, and the electric current of electric leakage certainly much smaller than common rechargeable battery satisfies mobile phone or mobile phone fully to the performance requirement of button.
Claims (6)
1. the capacitance type touch key that is used for mobile phone is characterized in that being provided with dielectric layer, touches capacitance electrode and control circuit, and described touch capacitance electrode is located on the dielectric layer, touches capacitance electrode and is connected with the input of control circuit.
2. the capacitance type touch key that is used for mobile phone according to claim 1 is characterized in that described dielectric layer adopts polymethyl methacrylate dielectric layer, acrylic dielectric layer or plastic medium layer.
3. be used for the capacitance type touch key of mobile phone according to claim 1, it is characterized in that the HX611 chip that described control circuit adopts Xiamen Haixin Technology Co., Ltd. to produce.
4. be used for the method for designing of the capacitance type touch key of mobile phone according to claim 1, it is characterized in that may further comprise the steps:
1) determines the size of position, shape, size and each button of mobile phone key district on mobile phone by application requirements;
2) select suitable medium as the dielectric layer that touches electric capacity, select suitable electric conducting material as the touch sensible electrode that touches electric capacity, at font or the figure made above or below the medium on the button, medium and electric conducting material adopt transparent material, make the light source of mobile phone main body see through capacitance electrode and dielectric layer, reach demonstration or purpose backlight;
3) the corresponding capacitance electrode of each button is connected to the corresponding input channel of capacitance type touch key control circuit;
4) identical dielectric material and identical display device are used with key zone in the viewing area, or use different dielectric materials and different display devices;
5) according to application requirements, for the different key on the mobile phone arranges different contact sensitivity; Can also increase paddling at key zone, the function beyond the buttons such as handwriting recognition.
As described in the claim 4 for the method for designing of the capacitance type touch key of mobile phone, it is characterized in that in step 2) in, a kind of in printing, spraying, the liquid crystal display device adopted in described making.
As described in the claim 4 for the method for designing of the capacitance type touch key of mobile phone, it is characterized in that in step 3) described capacitance type touch key control circuit is an independently chip, or a part in System on Chip/SoC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102208809A CN103338033A (en) | 2013-06-05 | 2013-06-05 | Capacitance-type touch keys applied to cell phones and a design method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102208809A CN103338033A (en) | 2013-06-05 | 2013-06-05 | Capacitance-type touch keys applied to cell phones and a design method thereof |
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| CN103338033A true CN103338033A (en) | 2013-10-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107211054A (en) * | 2015-12-31 | 2017-09-26 | 深圳市柔宇科技有限公司 | Terminal and electronic installation |
| CN113179094A (en) * | 2021-04-14 | 2021-07-27 | 燕山大学 | Capacitive piezoelectric touch virtual key and design method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4203280A (en) * | 1977-11-22 | 1980-05-20 | Ebauches, S.A. | Touch sensitive device for a timepiece |
| US4855550A (en) * | 1988-01-04 | 1989-08-08 | General Electric Company | White touch pads for capacitive touch control panels |
| CN101488740A (en) * | 2008-01-16 | 2009-07-22 | 联想(北京)有限公司 | Touching type press-key and control method thereof |
| CN201563150U (en) * | 2009-08-21 | 2010-08-25 | 中科方德软件有限公司 | Full-capacitance touch control-type mobile phone keyboard |
| CN101957640A (en) * | 2010-10-27 | 2011-01-26 | 汉王科技股份有限公司 | Protective sleeve with touch input function |
-
2013
- 2013-06-05 CN CN2013102208809A patent/CN103338033A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4203280A (en) * | 1977-11-22 | 1980-05-20 | Ebauches, S.A. | Touch sensitive device for a timepiece |
| US4855550A (en) * | 1988-01-04 | 1989-08-08 | General Electric Company | White touch pads for capacitive touch control panels |
| CN101488740A (en) * | 2008-01-16 | 2009-07-22 | 联想(北京)有限公司 | Touching type press-key and control method thereof |
| CN201563150U (en) * | 2009-08-21 | 2010-08-25 | 中科方德软件有限公司 | Full-capacitance touch control-type mobile phone keyboard |
| CN101957640A (en) * | 2010-10-27 | 2011-01-26 | 汉王科技股份有限公司 | Protective sleeve with touch input function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107211054A (en) * | 2015-12-31 | 2017-09-26 | 深圳市柔宇科技有限公司 | Terminal and electronic installation |
| CN113179094A (en) * | 2021-04-14 | 2021-07-27 | 燕山大学 | Capacitive piezoelectric touch virtual key and design method thereof |
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Application publication date: 20131002 |