CN201909818U - Static electricity testing device for LCD (Liquid Crystal Display) - Google Patents
Static electricity testing device for LCD (Liquid Crystal Display) Download PDFInfo
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- CN201909818U CN201909818U CN 201020190513 CN201020190513U CN201909818U CN 201909818 U CN201909818 U CN 201909818U CN 201020190513 CN201020190513 CN 201020190513 CN 201020190513 U CN201020190513 U CN 201020190513U CN 201909818 U CN201909818 U CN 201909818U
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- discharge head
- lcd display
- esd
- lcd
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Abstract
The utility model relates to a static electricity testing device for an LCD (Liquid Crystal Display). The static electricity testing device comprises a shell, a discharge tip and an ESD (Electro Spark Detector) testing circuit, wherein the discharge tip is arranged at the front end of the shell; and the ESD testing circuit is arranged in the shell and is electrically connected with the discharge tip. Under the condition of electrostatic discharge when simulation fingers touch an LCD module, the static electricity testing device for the LCD can adopts the discharge tip to test nonmetal parts which are often touched by operators, the testing voltage is from low to high, and the ESD testing result can be obtained at any time, therefore, a certain protection for the LCD module is realized, so as to guarantee the safety of the LCD module.
Description
Technical field
The utility model relates to anti-electrostatic-discharge (ESD:Electrostatic Discharge) field, relates in particular to a kind of LCD display electrostatic test device.
Background technology
ESD:Electrostatic Discharge i.e. the meaning of " static discharge ", and static discharge is to have the electric charge that the adjacent to each other or direct contact of special body size of different electrostatic potentials causes to shift.Static is a kind of electric energy, and it can be present in body surface, and many functions of static have been applied to the military project or the product for civilian use, as electrostatic precipitation, electrostatic separation, xerox etc.Yet, but static discharge becomes a kind of harm of electronic product and equipment, causes the parafunction even the parts damages of electronic product and equipment.
EDS destroy electronic component be experience fully less than, produce the electric charge accumulation that the discharge that can hear " whip " sound needs 2000V, the 3000V electric charge can be felt the click that picture is once little, 5000V just can see spark.The ESD energy is to introduce in the electronic package of product via conduction energy branch mode, main destructive power is an instantaneous peak current, voltage is the potential energy that brings out of guiding discharge process, be via directly (electric current) or indirec radiation mode impact on the circuit unit with instantaneous breakthrough fast when ESD begins, it can produce the inefficacy of three kinds of situations to electronic package: electronics lost efficacy (Hard failure), and potentiality lost efficacy (Latent failure) and the field intensity induction was lost efficacy (Fied induction failure).The field that the ESD electric current produces can directly penetrate equipment, or be coupled to sensitive circuit by cavity, slit, air vent, I/O cable etc., when the ESD electric current when internal system flows, in their excitation path the antenna of process, the emission efficiency of these antenna mainly depends on size, the radiation wavelength that esd pulse caused from several centimetres to hundreds of rice, these lay the operation that electromagnetic noises that energy produces will be damaged electronic equipment or harass them.
In recent years, along with the utilization of DMB (DMB), the importance of liquid crystal display (LCD) module increases gradually, and has the wireless portable terminal that is suitable for high-resolution color Presentation Function and go on the market.But, all these have in the equipment of LCD display module, that does not expect all can introduce exterior static, the introducing scope of these exterior static can from several kilovolts to several ten thousand volts, all components and parts, assembly and equipment all might be subjected to damage or the damage of static or ESD in welding, assembling, debugging and the actual life-cycle process of using.Therefore, international laws and regulations requirement to electronic product protection human body discharge mode is rigorous day by day, even the semi-conductor electricity sub-component passes through the electrostatic test of parts standard rules before dispatching from the factory, often still can not need carry out the ESD test by special equipment after being installed to finished product by the inferior laws and regulations requirement of system's payzone.
The utility model content
The purpose of this utility model is, a kind of LCD display electrostatic test device is provided, the situation of static discharge takes place in it when contacting the LCD display module by emulation people's finger, operating personnel are often tested at the nonmetal position of contact, can obtain the ESD test result at any time, guarantee the security of LCD display module.
For achieving the above object, the utility model provides a kind of LCD display electrostatic test device, and it comprises: shell, the ESD test circuit that is installed on the discharge head of this shell front end and is located at enclosure and electrically connects with discharge head.
Described shell is a housing, and discharge head is located at the position of this housing front end.
Described discharge head adopts the discharge head of 8mm.
Described ESD test circuit one end and discharge head electrically connect, other end ground connection.
Described ESD test circuit comprises first resistance that is connected in series successively, a switch, second resistance, and circuit for producing high voltage, this first resistance and discharge head electrically connect, this circuit for producing high voltage one end ground connection further, is also drawn an electric capacity and is connected with ground between switch and second resistance.
The beneficial effects of the utility model: the LCD display electrostatic test device that the utility model provides, the situation of static discharge takes place in it when contacting the LCD display module by emulation people's finger, utilize discharge head that operating personnel are often tested at the nonmetal position of contact, test voltage by low-voltage to high voltage, can obtain the ESD test result at any time, the LCD display module is played certain protective action, thereby guarantee the security of LCD display module.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effects apparent by embodiment of the present utility model is described in detail.
In the accompanying drawing,
Fig. 1 is the schematic cross-section of LCD display electrostatic test device one embodiment of the present utility model.
Embodiment
For further setting forth the utility model is technological means and the effect that the predetermined purpose of realization is taked, see also following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and characteristics, should obtain thus going deep into and concrete understanding, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.
As shown in Figure 1, the utility model provides a kind of LCD display electrostatic test device, and it comprises: shell 10, the ESD test circuit 30 that is installed on the discharge head 20 of these shell 10 front ends and is located at shell 10 inside and electrically connects with discharge head 20.
In the utility model, shell 10 is a housing, and discharge head 20 is located at the position of this housing front end, and this discharge head 20 adopts the discharge head of 8mm.Described ESD test circuit 30 1 ends and discharge head 20 electrically connect other end ground connection.As a specific embodiment of the present utility model, this ESD test circuit 30 comprises first resistance 32 that is connected in series successively, a switch 34, second resistance 36, and circuit for producing high voltage 38, this first resistance 32 electrically connects with discharge head 20, these circuit for producing high voltage 38 1 end ground connection, further, also drawing an electric capacity 35 between switch 34 and second resistance 36 is connected with ground.
LCD display electrostatic test device of the present utility model, it has three kinds of method of testings in use: one is the atmospherical discharges test, it is the situation of finger generation static discharge when contact LCD display module of emulation people, utilize the discharge head of 8mm that operating personnel are often tested at the nonmetal position of contact, test voltage by low-voltage to high voltage, usually measure positive and negative 8kV, allow the test condition that is higher than positive and negative 15kV but in rules, keep; Two are the contact discharge test, it is that the simulated operation personnel directly or indirectly see through the situation that discharge takes place when hand tool contacts the LCD display module, static gun is done the measuring electrical testing through the tip of discharge head 20 to the metal position of product to be measured during test, test voltage still from low to high, usually measure positive and negative 4kV, these test rules keep allows the test condition that is higher than positive and negative 4kV; Three is level and vertical metal plate discharge test, when it is the simulation operations personnel article discharge that contact closes near the LCD display module, produce the coupled field effect, this test is with static gun parallel-plate and leveling board discharge mode to be carried out, and the test voltage condition is identical with the contact discharge test.
In sum, the LCD display electrostatic test device that the utility model provides, the situation of static discharge takes place in it when contacting the LCD display module by emulation people's finger, utilize discharge head that operating personnel are often tested at the nonmetal position of contact, test voltage by low-voltage to high voltage, can obtain the ESD test result at any time, the LCD display module is played certain protective action, thereby guarantee the security of LCD display module.
The above; it only is preferred embodiment of the present utility model; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical scheme and the technical conceive of this aspect, and all these changes and distortion all should belong to the protection domain of the utility model claim.
Claims (5)
1. a LCD display electrostatic test device is characterized in that, the ESD test circuit that comprises shell, is installed on the discharge head of this shell front end and is located at enclosure and electrically connect with discharge head.
2. LCD display electrostatic test device as claimed in claim 1 is characterized in that described shell is a housing, and discharge head is located at the position of this housing front end.
3. LCD display electrostatic test device as claimed in claim 2 is characterized in that, described discharge head adopts the discharge head of 8mm.
4. LCD display electrostatic test device as claimed in claim 1 is characterized in that, described ESD test circuit one end and discharge head electrically connect, other end ground connection.
5. LCD display electrostatic test device as claimed in claim 4, it is characterized in that, described ESD test circuit comprises first resistance that is connected in series successively, a switch, second resistance, and circuit for producing high voltage, this first resistance and discharge head electrically connect, this circuit for producing high voltage one end ground connection, further, also drawing an electric capacity between switch and second resistance is connected with ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020190513 CN201909818U (en) | 2010-05-07 | 2010-05-07 | Static electricity testing device for LCD (Liquid Crystal Display) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020190513 CN201909818U (en) | 2010-05-07 | 2010-05-07 | Static electricity testing device for LCD (Liquid Crystal Display) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201909818U true CN201909818U (en) | 2011-07-27 |
Family
ID=44302019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020190513 Expired - Fee Related CN201909818U (en) | 2010-05-07 | 2010-05-07 | Static electricity testing device for LCD (Liquid Crystal Display) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201909818U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785239A (en) * | 2016-03-09 | 2016-07-20 | 深圳市华星光电技术有限公司 | ESD testing apparatus and ESD testing method |
| CN106291187A (en) * | 2016-08-11 | 2017-01-04 | 京东方科技集团股份有限公司 | The electrostatic discharge detection device of a kind of display device and detection method |
| CN106680635A (en) * | 2017-01-03 | 2017-05-17 | 京东方科技集团股份有限公司 | Touch screen test system and touch screen test method |
| CN111638403A (en) * | 2020-05-22 | 2020-09-08 | Tcl华星光电技术有限公司 | Static electricity testing method and testing device |
-
2010
- 2010-05-07 CN CN 201020190513 patent/CN201909818U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785239A (en) * | 2016-03-09 | 2016-07-20 | 深圳市华星光电技术有限公司 | ESD testing apparatus and ESD testing method |
| CN105785239B (en) * | 2016-03-09 | 2018-10-26 | 深圳市华星光电技术有限公司 | ESD test devices and ESD test methods |
| CN106291187A (en) * | 2016-08-11 | 2017-01-04 | 京东方科技集团股份有限公司 | The electrostatic discharge detection device of a kind of display device and detection method |
| CN106680635A (en) * | 2017-01-03 | 2017-05-17 | 京东方科技集团股份有限公司 | Touch screen test system and touch screen test method |
| CN111638403A (en) * | 2020-05-22 | 2020-09-08 | Tcl华星光电技术有限公司 | Static electricity testing method and testing device |
| CN111638403B (en) * | 2020-05-22 | 2022-07-29 | Tcl华星光电技术有限公司 | Static electricity testing method and testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Static electricity testing device for LCD (Liquid Crystal Display) Effective date of registration: 20120801 Granted publication date: 20110727 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Booyi Optoelectronics Science & Technology Co., Ltd. Registration number: 2012990000418 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20130725 Granted publication date: 20110727 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Booyi Optoelectronics Science & Technology Co., Ltd. Registration number: 2012990000418 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Static electricity testing device for LCD (Liquid Crystal Display) Effective date of registration: 20130725 Granted publication date: 20110727 Pledgee: Agricultural Bank of China Limited by Share Ltd Wuxi science and Technology Branch Pledgor: Wuxi Booyi Optoelectronics Science & Technology Co., Ltd. Registration number: 2013990000504 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180918 Address after: 523000 7 Bai Ye Avenue, 100 industrial town, Liaobu Town, Dongguan, Guangdong. Patentee after: Guangdong Jinlong electromechanical Co., Ltd. Address before: 214000 Jinxi Road, Wuxi City, Jiangsu Province, No. 100 Patentee before: Wuxi Booyi Optoelectronics Science & Technology Co., Ltd. |
|
| 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: 20110727 Termination date: 20190507 |