CN201518477U - Sensing structure of touch button - Google Patents
Sensing structure of touch button Download PDFInfo
- Publication number
- CN201518477U CN201518477U CN2009201892602U CN200920189260U CN201518477U CN 201518477 U CN201518477 U CN 201518477U CN 2009201892602 U CN2009201892602 U CN 2009201892602U CN 200920189260 U CN200920189260 U CN 200920189260U CN 201518477 U CN201518477 U CN 201518477U
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- pcb
- backlight
- back light
- sensing zone
- light sheet
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- Expired - Fee Related
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Abstract
The utility model provides a sensing structure of a touch button, which is used for improving the sensitivity of the touch button. The sensing structure comprises a back light sheet, a PCB and sensing zone metal material, wherein the back light sheet is arranged in the position above the PCB, the sensing zone metal material passes around the upper surface of the back light sheet and is fixed on the PCB. The sensing zone metal material can pass around the back light sheet, so that the sensing zone is more close to the housing without the influence of thickness of the back light sheet, thereby reducing the distance between the user and the sensing zone, and greatly improving the sensitivity of the sensing zone. Besides, the height and the length of the sensing zone metal material are varied along with the change in thickness and the area of the back light sheet, thereby facilitating the free design of the circuit of the touch button, for example, eliminating the height limitation of the LCD, the capacitor and the like.
Description
Technical field
The utility model relates to a kind of touch sensible button, particularly relates to a kind of capacitance touch induced key.
Background technology
A Copper Foil induction zone is arranged on the below of capacitance touch induced key, the PCB, above the Copper Foil induction zone, be provided with a backlight.Backlight is generally 2.5mm, though thinner, add the thickness of key casing, will strengthen the distance of human body and induction zone, reduce sensitivity, and weakened antijamming capability.In order to reduce above-mentioned interference, the backlight that also requires other element on the keypad such as LCD, electric capacity etc. must not be higher than button usually.
The structural limitations of above-mentioned touch sensible button the design of button thickness and PCB go up the layout of electric component, particularly limited the size of backlight, and the not enough problem of sensitivity is protruded relatively.
Summary of the invention
Problem to be solved in the utility model is: a kind of induction structure of touch key-press is provided, and this structure is used for improving the sensitivity of touch key-press induction.
In order to solve the problems of the technologies described above, the utility model proposes a kind of induction structure of touch key-press, comprise backlight, PCB and induction zone metal, wherein backlight is located at the top position of PCB, and described induction zone metal is walked around the upper surface of described induction zone metal and is fixed on the described PCB.
Preferably: described induction zone metal is a bonding jumper, is attached to described backlight upper surface in the middle of the bonding jumper, and two ends are fixed on the described PCB along the backlight both sides.
Preferably: described bonding jumper is two, is located at the both sides of described backlight upper surface respectively.
Preferably: described induction zone metal is copper sheet or steel disc.
The beneficial effects of the utility model are as follows:
Compared to existing technology, induction zone metal of the present utility model can be walked around backlight, and this just makes induction zone more near shell, and is not subjected to the influence of backlight thickness, this structure decrease the distance of people and induction zone, can improve the sensitivity of induction greatly.And because the induction zone metal can increase growth with the thickness and the area of backlight, such structure can make things convenient for freely designing of touch key-press circuit, no longer is subjected to limitation in height such as LCD, electric capacity etc.
Figure of description
Fig. 1 is the prior art constructions schematic diagram.
Fig. 2 is a structural representation of the present utility model.
Embodiment
Prior art has a Copper Foil induction zone 3 on the surface of PCB 1 shown in 1, be provided with a backlight 2 above Copper Foil induction zone 3.Direction shown in the double-head arrow is finger induction direction.As can be seen from the figure, the finger and Copper Foil between between be separated with backlight, the sensitivity of induction is subjected to bigger influence.
The utility model proposes a kind of induction structure of touch key-press, its structure is referring to shown in Figure 2.
Unlike the prior art be, induction zone metal of the present utility model is two bonding jumpers 6, is located at the both sides of backlight 5 upper surfaces respectively, is attached to backlight 5 upper surfaces in the middle of the bonding jumper 6, two ends are fixed on the PCB 4 along backlight 5 both sides.Two bonding jumpers 6 link together as the sensor circuit of induction zone metal and PCB.The induction zone metal can be steel disc or other metal.The height of bonding jumper can be adjusted according to the height of backlight, because the shell that its distance is located on the backlight is very near, other electric component on the PCB can not cause interference to induction zone, therefore need not to limit the height that PCB goes up other electric component.
Claims (4)
1. the induction structure of a touch key-press comprises backlight, PCB and induction zone metal, and wherein backlight is located at the top position of PCB, it is characterized in that: described induction zone metal is walked around the upper surface of described induction zone metal and is fixed on the described PCB.
2. the induction structure of touch key-press according to claim 1, it is characterized in that: described induction zone metal is a bonding jumper, is attached to described backlight upper surface in the middle of the bonding jumper, two ends are fixed on the described PCB along the backlight both sides.
3. the induction structure of touch key-press according to claim 2, it is characterized in that: described bonding jumper is two, is located at the both sides of described backlight upper surface respectively.
4. the induction structure of touch key-press according to claim 1, it is characterized in that: described induction zone metal is copper sheet or steel disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201892602U CN201518477U (en) | 2009-09-25 | 2009-09-25 | Sensing structure of touch button |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201892602U CN201518477U (en) | 2009-09-25 | 2009-09-25 | Sensing structure of touch button |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201518477U true CN201518477U (en) | 2010-06-30 |
Family
ID=42499200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201892602U Expired - Fee Related CN201518477U (en) | 2009-09-25 | 2009-09-25 | Sensing structure of touch button |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201518477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006047A (en) * | 2010-09-30 | 2011-04-06 | 江苏惠通集团有限责任公司 | Key detecting board |
| CN102006046A (en) * | 2010-09-30 | 2011-04-06 | 江苏惠通集团有限责任公司 | Key detecting board |
-
2009
- 2009-09-25 CN CN2009201892602U patent/CN201518477U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006047A (en) * | 2010-09-30 | 2011-04-06 | 江苏惠通集团有限责任公司 | Key detecting board |
| CN102006046A (en) * | 2010-09-30 | 2011-04-06 | 江苏惠通集团有限责任公司 | Key detecting board |
| WO2012040976A1 (en) * | 2010-09-30 | 2012-04-05 | 江苏惠通集团有限责任公司 | Press key sense pad |
| CN102006046B (en) * | 2010-09-30 | 2016-03-09 | 江苏惠通集团有限责任公司 | Key detection board |
| CN102006047B (en) * | 2010-09-30 | 2016-06-29 | 江苏惠通集团有限责任公司 | Key detection board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20160925 |