CN201946973U - Static protection device of mobile terminal with touch screen - Google Patents
Static protection device of mobile terminal with touch screen Download PDFInfo
- Publication number
- CN201946973U CN201946973U CN2011200132962U CN201120013296U CN201946973U CN 201946973 U CN201946973 U CN 201946973U CN 2011200132962 U CN2011200132962 U CN 2011200132962U CN 201120013296 U CN201120013296 U CN 201120013296U CN 201946973 U CN201946973 U CN 201946973U
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- screen
- touch
- connecting line
- transient voltage
- baseband chip
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- Elimination Of Static Electricity (AREA)
Abstract
The utility model relates to the mobile terminal field and discloses a static protection device of a mobile terminal with a touch screen. In the static protection device of the mobile terminal with the touch screen provided by the utility model, a transient voltage suppressor is arranged on every connecting wire for connecting a baseband chip and the touch screen, one end of each transient voltage suppressor is connected to the connecting wires for connecting the baseband chip and the touch screen, and the other end of each transient voltage suppressor is grounded. Through analyzing the touch screen static interference, the TVS(Transient Voltage Suppressors) with high response speed and low clamp voltage is chosen to perform the circuit design to quickly cut off the static interference pathway and realize the static protection; and through the device placement and the PCB (Printed Circuit Board) wiring design in the utility model, the static protection device shortens the static leakage pathway and reinforces the wiring isolation of the touch screen part to protect the baseband chip and other circuits of a mobile phone.
Description
Technical field
The utility model relates to field of mobile terminals, in particular a kind of portable terminal electrostatic protection apparatus with touch-screen.
Background technology
Along with the continuous development of electronic technology and the raising of people's living standard, the portable terminal of band touch-screen uses more and more universal, as the mobile phone of touch-screen etc.Use the mobile phone of touch-screen more and more now.And touch-screen is the more place of the direct contact gear ratio of human body on the mobile phone, and the static on the human body is easy to directly get on the touch-screen, and the portable terminal of band touch-screens such as mobile phone is damaged.
Therefore, prior art has yet to be improved and developed.
The utility model content
The technical problems to be solved in the utility model is, at the above-mentioned defective of prior art, provides a kind of portable terminal electrostatic protection apparatus with touch-screen, and it can prevent the harm that static causes effectively on the portable terminal of band touch-screen.
The technical scheme that the utility model technical solution problem is adopted is as follows:
A kind of portable terminal electrostatic protection apparatus with touch-screen, comprise baseband chip, reach touch-screen, described baseband chip is connected with described touch-screen by connecting line, wherein, it also is included in the transient voltage that is provided with on baseband chip and the connecting line that touch-screen is connected and suppresses diode, the end that described transient voltage suppresses diode is attempted by on the connecting line of described baseband chip and touch-screen, and described transient voltage suppresses the other end ground connection of diode.
The portable terminal electrostatic protection apparatus of described band touch-screen, wherein, it also comprises electric capacity, an end of described electric capacity is attempted by on the connecting line of described baseband chip and touch-screen, the other end ground connection of described electric capacity.
The portable terminal electrostatic protection apparatus of described band touch-screen, wherein, it also comprises the touch-screen connector that is connected with each electrode of touch-screen, described touch-screen connector is connected with described baseband chip by connecting line.
The portable terminal electrostatic protection apparatus of described band touch-screen, wherein, described transient voltage suppresses the diode connection and is arranged near on the connecting line of described touch-screen connector.
The portable terminal electrostatic protection apparatus of described band touch-screen, wherein, described touch screen electrode is four, described touch-screen connector is connected with described baseband chip with the 4th connecting line by first connecting line, second connecting line, the 3rd connecting line respectively.
The portable terminal electrostatic protection apparatus of described band touch-screen, wherein, described transient voltage suppresses diode and comprises that first transient voltage suppresses diode, second transient voltage suppresses diode, the 3rd transient voltage inhibition diode and the 4th transient voltage and suppresses diode;
The end that described first transient voltage suppresses diode is connected on described first connecting line other end ground connection;
The end that described second transient voltage suppresses diode is connected on described second connecting line other end ground connection;
The end that described the 3rd transient voltage suppresses diode is connected on described the 3rd connecting line other end ground connection;
The end that described the 4th transient voltage suppresses diode is connected on described the 4th connecting line other end ground connection.
The portable terminal electrostatic protection apparatus of described band touch-screen, wherein, described electric capacity is 4, is respectively first electric capacity, second electric capacity, the 3rd electric capacity and the 4th electric capacity;
One end of described first electric capacity is connected on described first connecting line, other end ground connection;
One end of described second electric capacity is connected on described second connecting line, other end ground connection;
One end of described the 3rd electric capacity is connected on described the 3rd connecting line, other end ground connection;
One end of described the 4th electric capacity is connected on described the 4th connecting line, other end ground connection.
The portable terminal electrostatic protection apparatus of band touch-screen provided by the utility model, owing to adopted transient state voltage inhibition diode respectively be set on each connecting line that baseband chip is connected with touch-screen, one end of described transient voltage inhibition diode is connected described on the connecting line of baseband chip and touch-screen, other end ground connection; By analysis to the touch-screen electrostatic interference, select for use TVS pipe to carry out circuit design with characteristics such as response speed are fast, clamp voltage is low, come the path of fast shut-off electrostatic interference, realize electrostatic protection; Put and the design of PCB cabling by the device shown in the utility model, shorten the path of electrostatic leakage and the isolation of reinforcement touch screen portion cabling and come protecting group microarray strip and other circuit of mobile phone.
Description of drawings
Fig. 1 is the portable terminal electrostatic protection apparatus structural representation of the band touch-screen of the utility model first embodiment.
Fig. 2 is the portable terminal electrostatic protection apparatus structural representation of the band touch-screen of the utility model second embodiment.
Embodiment
For electrostatic breakdown, can analyze from interference source (being that the source takes place static), responsive source (promptly by the electrostatic breakdown part), 3 of interference paths, thus the solution of finding out.
Static destroys mobile phone by touch-screen, interference source mainly be human body with static, this interference source is difficult to eliminate in practice.The baseband chip of mobile phone and other circuit modules are by the responsive source of electrostatic breakdown, because touch-screen is the exchange channels of user and mobile phone, need to contact with human body at any time, can not shielding get up, static directly enters baseband chip by the connecting line of touch-screen and baseband chip like this, and then the ADC module (analog-to-digital conversion module) of destruction baseband chip inter-process contact screen information, cause unpredictable problem, cause operating handset to be made mistakes and maybe can't work.As seen in type baseband chip; be difficult in the design realize protection by the antijamming capability of strengthening responsive source; therefore the utility model mainly is to cut off the interference path of static by principle design, device layout and PCB cabling; static is let out away before arriving baseband chip, thereby realized the purpose of protection system.
The portable terminal electrostatic protection apparatus of band touch-screen provided by the utility model, clearer, clear and definite for making the purpose of this utility model, technical scheme and advantage, below the utility model is further described with reference to the accompanying drawing embodiment that develops simultaneously.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.
The portable terminal electrostatic protection apparatus of the band touch-screen that the utility model first embodiment is provided as shown in Figure 1, comprises baseband chip, reaches touch-screen, and described baseband chip is connected with described touch-screen by connecting line.As shown in Figure 1, the touch-screen in the present embodiment comprises 4 electrodes, and this touch-screen need be connected with described baseband chip by 4 connecting lines (first connecting line 101 as shown in Figure 1, second connecting line 102, the 3rd connecting line 103 and the 4th connecting line 104).
Among this first embodiment, each is provided with by a transient state voltage and suppresses diode (TVS pipe) ground connection on each connecting line of baseband chip and touch-screen, as shown in Figure 1.Described transient voltage suppresses diode and comprises that first transient voltage suppresses diode CR1, second transient voltage suppresses diode CR2, the 3rd transient voltage inhibition diode CR3 and the 4th transient voltage suppresses diode CR4.
As shown in Figure 1, the end of described first transient voltage inhibition diode CR1 is connected on described first connecting line 101 other end ground connection.The end that described second transient voltage suppresses diode CR2 is connected on described second connecting line 102, other end ground connection.The end that described the 3rd transient voltage suppresses diode CR3 is connected on described the 3rd connecting line 103 other end ground connection.The end that described the 4th transient voltage suppresses diode CR4 is connected on described the 4th connecting line other end ground connection.
During implementing, the utility model arrives the path of baseband chip from touch-screen in order to cut off static, after line comes out from touch-screen, designed in the present embodiment CR1, CR2, CR3, CR4 altogether four TVS pipes (transient voltage inhibition diode) be connected in parallel on the line of baseband chip and touch-screen.When entering touch-screen, high-tension static at first arrives TVS by each connecting line.Because electrostatic potential is higher than the operating voltage of TVS far away, so the TVS reverse-conducting arrives ground, static is directly led ground by TVS, thereby cuts off the interference path of static to baseband chip, and it can prevent electrostatic breakdown baseband chip internal circuit effectively.
The portable terminal electrostatic protection apparatus of the described band touch-screen of the utility model second embodiment as shown in Figure 2, comprises baseband chip U1, touch-screen; It also comprises the touch-screen connector J1 that is connected with each electrode of touch-screen, and described touch-screen connector J1 is connected with described baseband chip U1 by 4 connecting lines (first connecting line 101 as shown in Figure 2, second connecting line 102, the 3rd connecting line 103 and the 4th connecting line 104).
In the present embodiment, described touch screen electrode is four, then described touch-screen connector J1 has 4 joints to connect four electrodes of described touch-screen respectively, and 4 outputs of described touch-screen connector J1 (output 1 as shown in Figure 2, output 2, output 3, output 4) are connected with described baseband chip U1 with the 4th connecting line 104 by first connecting line 101, second connecting line 102, the 3rd connecting line 103 respectively.
In the present embodiment, each is provided with by a transient state voltage and suppresses diode ground connection on baseband chip U1 and each connecting line that touch-screen connector J1 is connected, as shown in Figure 2, the transient voltage of present embodiment suppresses diode and comprises that first transient voltage suppresses diode CR1, second transient voltage suppresses diode CR2, the 3rd transient voltage inhibition diode CR3 and the 4th transient voltage suppresses diode CR4.
As shown in Figure 2, the end of described first transient voltage inhibition diode CR1 is connected on described first connecting line 101 other end ground connection.The end that described second transient voltage suppresses diode CR2 is connected on described second connecting line 102 other end ground connection.The end that described the 3rd transient voltage suppresses diode CR3 is connected on described the 3rd connecting line 103 other end ground connection.The end that described the 4th transient voltage suppresses diode CR4 is connected on described the 4th connecting line 104 other end ground connection.
Be connected in parallel on the line of baseband chip and touch-screen by four TVS pipes (transient voltage inhibition diode) in the present embodiment.When entering touch-screen, high-tension static at first arrives TVS by each connecting line.Because electrostatic potential is higher than the operating voltage of TVS far away, so the TVS reverse-conducting arrives ground, static is directly led ground by TVS, thereby cuts off the interference path of static to baseband chip, and it can prevent electrostatic breakdown baseband chip internal circuit effectively.
Enter a ground, it also comprises electric capacity the portable terminal electrostatic protection apparatus of this embodiment, and an end of described electric capacity is attempted by on the connecting line of described baseband chip and touch-screen, the other end ground connection of described electric capacity.Preferably, as shown in Figure 2, described electric capacity is 4, is respectively first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3 and the 4th capacitor C 4.One end of described first capacitor C 1 is connected on described first connecting line 101, other end ground connection.One end of described second capacitor C 2 is connected on described second connecting line 102, other end ground connection.One end of described the 3rd capacitor C 3 is connected on described the 3rd connecting line 103, other end ground connection.One end of described the 4th capacitor C 4 is connected on described the 4th connecting line 104, other end ground connection.
Preferably, described first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3 and the 4th capacitor C 4 all are the electric capacity of 33pF, be when the touch-screen line when the antenna, these 4 electric capacity can be eliminated high frequency E MI(electromagnetic interference effectively, and Electromagnetic Interference is called for short EMI) noise.
Wherein, the portable terminal electrostatic protection apparatus of above-mentioned first enforcement and the second band touch-screen of implementing preferably, suppresses the diode connection with described transient voltage and is arranged near on the connecting line of described touch-screen connector.
In sum, the portable terminal electrostatic protection apparatus of band touch-screen provided by the utility model, owing to adopted transient state voltage inhibition diode respectively be set on each connecting line that baseband chip is connected with touch-screen, one end of described transient voltage inhibition diode is connected described on the connecting line of baseband chip and touch-screen, other end ground connection; By analysis to the touch-screen electrostatic interference, select for use TVS pipe to carry out circuit design with characteristics such as response speed are fast, clamp voltage is low, come the path of fast shut-off electrostatic interference, realize electrostatic protection; Put and the design of PCB cabling by the device shown in the utility model, shorten the path of electrostatic leakage and the isolation of reinforcement touch screen portion cabling and come protecting group microarray strip and other circuit of mobile phone.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (7)
1. portable terminal electrostatic protection apparatus with touch-screen, comprise baseband chip, reach touch-screen, described baseband chip is connected with described touch-screen by connecting line, it is characterized in that, it also is included in the transient voltage that is provided with on baseband chip and the connecting line that touch-screen is connected and suppresses diode, the end that described transient voltage suppresses diode is attempted by on the connecting line of described baseband chip and touch-screen, and described transient voltage suppresses the other end ground connection of diode.
2. according to the portable terminal electrostatic protection apparatus of the described band touch-screen of claim 1, it is characterized in that it also comprises electric capacity, an end of described electric capacity is attempted by on the connecting line of described baseband chip and touch-screen, the other end ground connection of described electric capacity.
3. according to the portable terminal electrostatic protection apparatus of the described band touch-screen of claim 2, it is characterized in that it also comprises the touch-screen connector that is connected with each electrode of touch-screen, described touch-screen connector is connected with described baseband chip by connecting line.
4. according to the portable terminal electrostatic protection apparatus of the described band touch-screen of claim 3, it is characterized in that described transient voltage suppresses the diode connection and is arranged near on the connecting line of described touch-screen connector.
5. according to the portable terminal electrostatic protection apparatus of the described band touch-screen of claim 3, it is characterized in that described touch-screen connector is connected with described baseband chip with the 4th connecting line by first connecting line, second connecting line, the 3rd connecting line respectively.
6. according to the portable terminal electrostatic protection apparatus of the described band touch-screen of claim 5, it is characterized in that described transient voltage suppresses diode and comprises that first transient voltage suppresses diode, second transient voltage suppresses diode, the 3rd transient voltage inhibition diode and the 4th transient voltage and suppresses diode;
The end that described first transient voltage suppresses diode is connected on described first connecting line other end ground connection;
The end that described second transient voltage suppresses diode is connected on described second connecting line other end ground connection;
The end that described the 3rd transient voltage suppresses diode is connected on described the 3rd connecting line other end ground connection;
The end that described the 4th transient voltage suppresses diode is connected on described the 4th connecting line other end ground connection.
7. according to the portable terminal electrostatic protection apparatus of the described band touch-screen of claim 5, it is characterized in that described electric capacity is 4, be respectively first electric capacity, second electric capacity, the 3rd electric capacity and the 4th electric capacity;
One end of described first electric capacity is connected on described first connecting line, other end ground connection;
One end of described second electric capacity is connected on described second connecting line, other end ground connection;
One end of described the 3rd electric capacity is connected on described the 3rd connecting line, other end ground connection;
One end of described the 4th electric capacity is connected on described the 4th connecting line, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200132962U CN201946973U (en) | 2011-01-17 | 2011-01-17 | Static protection device of mobile terminal with touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200132962U CN201946973U (en) | 2011-01-17 | 2011-01-17 | Static protection device of mobile terminal with touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946973U true CN201946973U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200132962U Expired - Fee Related CN201946973U (en) | 2011-01-17 | 2011-01-17 | Static protection device of mobile terminal with touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201946973U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269190A (en) * | 2013-04-02 | 2013-08-28 | 江苏富天江电子电器有限公司 | Driver for driving direct current brushless motor for air-condition fan |
| CN105405422A (en) * | 2015-12-10 | 2016-03-16 | 昆山龙腾光电有限公司 | Voltage stabilizing power supply circuit and liquid crystal display device |
| CN106992507A (en) * | 2016-01-21 | 2017-07-28 | 帕克西铁道电子信息系统（上海）有限公司 | A kind of electric resistance touch screen protection circuit |
| CN107205064A (en) * | 2017-05-23 | 2017-09-26 | 维沃移动通信有限公司 | A kind of ground structure and mobile terminal |
| CN104391617B (en) * | 2014-11-05 | 2017-11-10 | 许继电气股份有限公司 | A kind of electrostatic discharge protection circuit of resistive touch screen |
| CN104502646B (en) * | 2014-12-22 | 2019-07-05 | 上海斐讯数据通信技术有限公司 | A kind of mobile terminal test fixture protective device |
| CN113692099A (en) * | 2021-07-15 | 2021-11-23 | 中国电子科技集团公司第二十九研究所 | General IO protection tool |
-
2011
- 2011-01-17 CN CN2011200132962U patent/CN201946973U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269190A (en) * | 2013-04-02 | 2013-08-28 | 江苏富天江电子电器有限公司 | Driver for driving direct current brushless motor for air-condition fan |
| CN104391617B (en) * | 2014-11-05 | 2017-11-10 | 许继电气股份有限公司 | A kind of electrostatic discharge protection circuit of resistive touch screen |
| CN104502646B (en) * | 2014-12-22 | 2019-07-05 | 上海斐讯数据通信技术有限公司 | A kind of mobile terminal test fixture protective device |
| CN105405422A (en) * | 2015-12-10 | 2016-03-16 | 昆山龙腾光电有限公司 | Voltage stabilizing power supply circuit and liquid crystal display device |
| CN105405422B (en) * | 2015-12-10 | 2018-07-06 | 昆山龙腾光电有限公司 | A kind of voltage-stabilized power supply circuit and liquid crystal display device |
| CN106992507A (en) * | 2016-01-21 | 2017-07-28 | 帕克西铁道电子信息系统（上海）有限公司 | A kind of electric resistance touch screen protection circuit |
| CN107205064A (en) * | 2017-05-23 | 2017-09-26 | 维沃移动通信有限公司 | A kind of ground structure and mobile terminal |
| CN107205064B (en) * | 2017-05-23 | 2019-11-15 | 维沃移动通信有限公司 | A kind of ground structure and mobile terminal |
| US11061293B2 (en) | 2017-05-23 | 2021-07-13 | Vivo Mobile Communication Co., Ltd. | Ground structure and mobile terminal |
| CN113692099A (en) * | 2021-07-15 | 2021-11-23 | 中国电子科技集团公司第二十九研究所 | General IO protection tool |
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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: 20110824 Termination date: 20130117 |