CN200941656Y - ESD protecting circuit and TV set having the same - Google Patents
ESD protecting circuit and TV set having the same Download PDFInfo
- Publication number
- CN200941656Y CN200941656Y CNU2006200879503U CN200620087950U CN200941656Y CN 200941656 Y CN200941656 Y CN 200941656Y CN U2006200879503 U CNU2006200879503 U CN U2006200879503U CN 200620087950 U CN200620087950 U CN 200620087950U CN 200941656 Y CN200941656 Y CN 200941656Y
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- voltage suppressor
- transient voltage
- protection circuit
- esd protection
- tvs
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Abstract
The utility model provides an ESD protection circuit and a TV set with the protection circuit,which comprise a transient voltage suppressor. One end of the transient voltage suppressor is connected to the signal transmission pin of a signal board and the other end is grounded; the transient voltage suppressor can adopt a TVS diode or a TVS voltage-sensitive resistor to realize. To further improve the protection ability of the signal board circuit to electrostatic discharge, a release capacitor can be connected with two ends of the transient voltage suppressor in parallel. When the static electricity discharges, the transient voltage suppressor is quickly conducted by the high voltage of the static electricity , then the high-speed switch performance of the transient voltage suppressor is used to earth the static electricity to release, thereby, effectively protecting the post-stage circuit devices and improving the reliability of the system work. The ESD protection circuit of the utility model has a simple structure, a low cost and can be applied to various electrical circuits.
Description
Technical field
The utility model belongs to the electrostatic defending technical field, specifically, relates to a kind of electronic circuit of realizing the signal plate of home appliances such as television set is carried out the ESD protection.
Background technology
Static discharge ESD is the abbreviation of English electrostatic discharge, is the quiescent current of being released by non-conduction surfaces moment, and static discharge can cause the damage and the performance decrease of electronic devices and components in the circuit; It produces root is many-sided, and therefore a lot of indescribable damages of product, more and more are subjected to the attention of each enterprise to the protection of static discharge.At the circuit design initial stage, the electrostatic defending measure is applied to the ESD protective capacities of removing effectively to improve whole electronic product in the circuit design.The electrostatic defending measure is more in the prior art, and the ESD safeguard procedures that are applied to television set mostly are to adopt the mode of signal plate large tracts of land ground connection to realize.But this measure is difficult to guarantee consistency, and is being difficult to enforcement sometimes.For some ESD protection circuit that adopts functional module to realize, its circuit structure more complicated, component number is more, thereby has increased design cost and composing difficulty, is unfavorable for applying in household appliances.
Summary of the invention
The utility model is problems such as ESD protection circuit complex structure in the prior art, component number are many, design cost height in order to solve, and a kind of ESD protection circuit that adopts Transient Voltage Suppressor to realize is provided, and have effectively simplified circuit structure, have reduced production cost.
For addressing the above problem, the utility model is achieved by the following technical solutions:
A kind of ESD protection circuit and have the television set of described protection circuit includes a transient state voltage suppressor, and an end of described Transient Voltage Suppressor is connected on the signal transmission pin of signal plate, other end ground connection.
Wherein, described Transient Voltage Suppressor can adopt TVS diode or TVS piezo-resistance to realize.In order further to improve the protective capacities of backplate circuit to static discharge, can parallel connection one discharge electric capacity at the two ends of described Transient Voltage Suppressor, the appearance value of described release electric capacity is advisable with 0.05～0.2uF.
Compared with prior art; advantage of the present utility model and good effect are: the utility model makes up the ESD protection circuit by adopting Transient Voltage Suppressors such as TVS diode or TVS piezo-resistance; when static discharge; because the high pressure of static makes the rapid conducting of this Transient Voltage Suppressor; utilize the speed-sensitive switch performance of Transient Voltage Suppressor; static short is discharged to ground, thereby protected the late-class circuit device, improved the reliability of system works.ESD protection circuit of the present utility model is simple in structure, with low cost, can be widely used in the various electronic circuits.
Description of drawings
Fig. 1 is the ESD protection circuit schematic diagram that the utility model utilizes the TVS diode to realize;
Fig. 2 is the ESD protection circuit schematic diagram that utilizes the TVS piezo-resistance to realize;
Fig. 3 is the ESD protection circuit schematic diagram that utilizes the TVS diode mode in parallel with discharging electric capacity to realize.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The utility model adopts in tradition on the processing mode basis of signal plate large tracts of land ground connection, by increase Transient Voltage Suppressor on signal transmission pin, as TVS diode or TVS piezo-resistance etc.; Increase the mode that discharges electric capacity and solve the ESD protection question on the RESET of key pin such as CPU pin, this circuit structure is simple, practical, effect is remarkable.
Embodiment one, ESD signal guard circuit as shown in Figure 1, and an end of TVS diode links to each other other end ground connection with signal transmission pin.When static discharge, electrostatic high-pressure makes the rapid conducting of TVS diode, utilizes the speed-sensitive switch performance of TVS diode, high-pressure electrostatic is discharged with being shorted to, thereby protected back grade circuit devcie.
Embodiment two, ESD protection circuit as shown in Figure 2, and the end of TVS piezo-resistance RS links to each other other end ground connection with signal transmission pin.When static discharge, electrostatic high-pressure is by the TVS piezo-resistance RS ground of releasing rapidly, thereby played the effect of protection back level electronic device.
Embodiment three; ESD protection circuit as shown in Figure 3, TVS diode are connected between signal transmission pin and the ground, discharge capacitor C S at the two ends in parallel of described TVS diode; can accelerate the speed of releasing, thereby the main pin of chip is played more reliable protection effect electrostatic potential.Certainly, also can adopt the two ends mode that discharges capacitor C S in parallel of TVS piezo-resistance RS in Fig. 2 to strengthen ESD protective action to the chip signal pin.The appearance value of described release capacitor C S is typically chosen in 0.05～0.2uF, and preferred 0.1uF can be determined on a case-by-case basis.
The utility model has been realized the effective protection of signal circuit to static discharge by adopting above-mentioned simple circuit configuration, and is with low cost, respond well, can be widely used in the television signal plate circuit.Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. ESD protection circuit is characterized in that: include a transient state voltage suppressor, an end of described Transient Voltage Suppressor is connected on the signal transmission pin of signal plate, other end ground connection.
2. ESD protection circuit according to claim 1 is characterized in that: described Transient Voltage Suppressor is the TVS diode.
3. ESD protection circuit according to claim 1 is characterized in that: described Transient Voltage Suppressor is the TVS piezo-resistance.
4. ESD protection circuit according to claim 1 is characterized in that: be parallel with an electric capacity at the two ends of described Transient Voltage Suppressor.
5. ESD protection circuit according to claim 4 is characterized in that: described electric capacity is the release electric capacity of 0.05～0.2uF.
6. television set with the described ESD protection circuit of claim 1 is characterized in that: include a transient state voltage suppressor, an end of described Transient Voltage Suppressor is connected on the signal transmission pin of signal plate, other end ground connection.
7. television set according to claim 6 is characterized in that: described Transient Voltage Suppressor is the TVS diode.
8. television set according to claim 6 is characterized in that: described Transient Voltage Suppressor is the TVS piezo-resistance.
9. television set according to claim 6 is characterized in that: be parallel with an electric capacity at the two ends of described Transient Voltage Suppressor.
10. television set according to claim 9 is characterized in that: described electric capacity is the release electric capacity of 0.05～0.2uF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200879503U CN200941656Y (en) | 2006-08-14 | 2006-08-14 | ESD protecting circuit and TV set having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200879503U CN200941656Y (en) | 2006-08-14 | 2006-08-14 | ESD protecting circuit and TV set having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941656Y true CN200941656Y (en) | 2007-08-29 |
Family
ID=38747828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200879503U Expired - Fee Related CN200941656Y (en) | 2006-08-14 | 2006-08-14 | ESD protecting circuit and TV set having the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200941656Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296025A (en) * | 2013-05-22 | 2013-09-11 | 深圳市共进电子股份有限公司 | ESD (electro-static discharge) protection circuit for integrated circuit chips on circuit board |
| CN105083174A (en) * | 2015-05-10 | 2015-11-25 | 钟志强 | Static electricity removing belt with electronic protection device |
| CN106602539A (en) * | 2015-10-20 | 2017-04-26 | 宏达国际电子股份有限公司 | Surge protector |
| CN109473963A (en) * | 2018-12-28 | 2019-03-15 | 江苏邦融微电子有限公司 | A kind of electrostatic protection structure |
| CN112737362A (en) * | 2020-12-23 | 2021-04-30 | 北京深思数盾科技股份有限公司 | Power adapter and electronic device |
| CN113207205A (en) * | 2021-04-13 | 2021-08-03 | 上海交通大学 | Microwave protection circuit based on transient voltage suppressor |
| US11804707B2 (en) | 2020-06-15 | 2023-10-31 | Samsung Display Co., Ltd. | System-in-package and electronic module including the same |
-
2006
- 2006-08-14 CN CNU2006200879503U patent/CN200941656Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103296025A (en) * | 2013-05-22 | 2013-09-11 | 深圳市共进电子股份有限公司 | ESD (electro-static discharge) protection circuit for integrated circuit chips on circuit board |
| CN105083174A (en) * | 2015-05-10 | 2015-11-25 | 钟志强 | Static electricity removing belt with electronic protection device |
| CN106602539A (en) * | 2015-10-20 | 2017-04-26 | 宏达国际电子股份有限公司 | Surge protector |
| CN106602539B (en) * | 2015-10-20 | 2019-09-10 | 宏达国际电子股份有限公司 | Surge protection means |
| CN109473963A (en) * | 2018-12-28 | 2019-03-15 | 江苏邦融微电子有限公司 | A kind of electrostatic protection structure |
| US11804707B2 (en) | 2020-06-15 | 2023-10-31 | Samsung Display Co., Ltd. | System-in-package and electronic module including the same |
| CN112737362A (en) * | 2020-12-23 | 2021-04-30 | 北京深思数盾科技股份有限公司 | Power adapter and electronic device |
| CN113207205A (en) * | 2021-04-13 | 2021-08-03 | 上海交通大学 | Microwave protection circuit based on transient voltage suppressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20100814 |