CN203084104U - OTP burning and upper/lower-limit voltage detecting system of liquid crystal display module - Google Patents
OTP burning and upper/lower-limit voltage detecting system of liquid crystal display module Download PDFInfo
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- CN203084104U CN203084104U CN 201220733138 CN201220733138U CN203084104U CN 203084104 U CN203084104 U CN 203084104U CN 201220733138 CN201220733138 CN 201220733138 CN 201220733138 U CN201220733138 U CN 201220733138U CN 203084104 U CN203084104 U CN 203084104U
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Abstract
An OTP burning and upper/lower-limit voltage detecting system of a liquid crystal display module comprises a multi-channel power conversion circuit, an MCU control system, a relay switching circuit controlled by the MCU control system, and a to-be-tested liquid crystal display module testing slot. The multi-channel power conversion circuit provides a back-light power supply, a lower-limit working voltage, a normal working voltage, an upper-limit working voltage, an OTP burning voltage and a relay working voltage; and one part of I/O ports inside the MCU control system is used for controlling the relay switching circuit, and the other part is used for communicating with tested liquid crystal display module components in the to-be-tested liquid crystal display module testing slot. Compared with the prior art, the system has the advantage that the system not only can detect performance parameters of the liquid crystal display module under a standard working voltage, but also can detect performance parameters of the liquid crystal display module under the lower-limit working voltage and the upper-limit working voltage, thus expanding the detection range of parameters.
Description
Technical field
The utility model relates to a kind of detection pilot system of liquid crystal display module element.
Background technology
The liquid crystal display module element is the same with common electronic component products, but the power voltage supply scope of an operate as normal is all arranged, i.e. standard operation voltage and upper and lower limit operating voltage thereof.Whether present manufacturing enterprise just is added on the detected element with one tunnel single standard voltage when detecting the liquid crystal display module element, come the parameters of test products qualified.Whether can meet the requirements under the minimum voltage of regulation and ceiling voltage as for product, just by testing staff's sensation, and the neither one detection system come practice examining it.Also integrated OTP revises the burning function of voltage on the drive IC of particularly a lot of liquid crystal display module elements, and this just requires product detection pilot system also will provide one tunnel operating voltage for the OTP circuit.Therefore, the product that presses for a kind of Full Featured liquid crystal display module element of research and development detects pilot system, to improve the integrality that detects test efficiency and test parameter.
Summary of the invention
The purpose of this utility model provides a kind of OTP burning and bound voltage detecting system of liquid crystal display module, this system has multi-channel test operating voltage and a master control test macro, can be used for the various performance parameters of detecting element under minimum operating voltage, standard operation voltage, maximum operating voltage, can also be used to carrying out detection and the burning that OTP revises voltage.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of OTP burning of liquid crystal display module and bound voltage detecting system, it is characterized in that: this detection system comprises multiple power supplies change-over circuit, MCU control system, by the relay commutation circuit and the liquid crystal display module test socket to be measured of the control of MCU control system, and described multiple power supplies change-over circuit provides backlight electric power, lower limit operating voltage, normal working voltage, upper limit operating voltage, OTP burning voltage, relay working voltage; Its inner I/O mouth of described MCU control system part pilot relay commutation circuit, another part be used for liquid crystal display module test socket to be measured in tested liquid crystal display module element carry out communication.
Compared with prior art, the utility model has the advantages that:
Because this detection pilot system not only has the module operating voltage of standard, voltage backlight and parameter test system, multiple operating voltage such as module lower limit operating voltage, upper limit operating voltage, OTP detection burning voltage, relay working voltage have also been set up; And original parameter test system also has been extended to the master control system of whole detection testing table.This detection pilot system not only can detect the performance parameter of liquid crystal display module under standard operation voltage, and can detect the performance parameter of liquid crystal display module under lower limit operating voltage and upper limit operating voltage, enlarge the sensing range of parameter, improved the quality inspection of product further; Simultaneously, this detection pilot system also is provided with OTP burning voltage detecting function, and the OTP that can carry out the liquid crystal display module simultaneously revises the detection and the burning of voltage.
Description of drawings
Fig. 1 is the structural representation of the detection pilot system of liquid crystal display module element.
Embodiment
Concrete structure of the present utility model is such: as shown in Figure 1, a kind of OTP burning of liquid crystal display module and bound voltage detecting system, this detection system comprises multiple power supplies change-over circuit, MCU control system, by the relay commutation circuit and the liquid crystal display module test socket to be measured of the control of MCU control system, described multiple power supplies change-over circuit provides backlight electric power, lower limit operating voltage, normal working voltage, upper limit operating voltage, OTP burning voltage, relay working voltage; Its inner I/O mouth of described MCU control system part pilot relay commutation circuit, another part be used for liquid crystal display module test socket to be measured in tested liquid crystal display module element carry out communication.It all is to be obtained after the conversion of multiple power supplies change-over circuit by the stable DC operating voltage that stabilized voltage supply provides that described module lower limit operating voltage, upper limit operating voltage, OTP detect burning voltage, relay working voltage etc.
The course of work that detects pilot system is such: when system began to power up, a plurality of mu balanced circuits in the system were started working, and the required various voltages of generation system.Under the programmed control of MCU control system, add normal standard operation voltage for liquid crystal display module element to be measured earlier by the relay commutation circuit, and the liquid crystal display module element detected whether meet the requirements to check test product by testing process.If product meets the requirements, then test process down carries out; If product is undesirable, and the drive IC of detected element has the OTP debugging functions, then can carry out OTP to detected element and proofread and correct, and it is met the requirements, and carries out the burning of OTP voltage simultaneously.If through meeting the requirements behind the OTP voltage correction, then test process down carries out; If still undesirable, then this product has been exactly a unacceptable product, and test process also can finish.
Next step of test is that the normal working voltage of detected element is disconnected, and for product adds the bound operating voltage, checks simultaneously whether detected element meets the requirements.If undesirable, then this product also is a unacceptable product, and test process also can finish.
The final step of test is that the lower limit operating voltage is disconnected, and detects for product adds upper limit operating voltage, checks simultaneously whether detected element meets the requirements.If meet the requirements, then test process finishes; If undesirable, then this product also is a unacceptable product, and test process also can finish.
After test process finishes, master control system will disconnect all power supplys.After the outage, just detected element can be taken off, according to whether meeting the requirements, be included into different classes of in.And then put another set of pieces, beginning detects next time.
Claims (1)
1. the OTP burning of a liquid crystal display module and bound voltage detecting system, it is characterized in that: this detection system comprises multiple power supplies change-over circuit, MCU control system, by the relay commutation circuit and the liquid crystal display module test socket to be measured of the control of MCU control system, and described multiple power supplies change-over circuit provides backlight electric power, lower limit operating voltage, normal working voltage, upper limit operating voltage, OTP burning voltage, relay working voltage; Its inner I/O mouth of described MCU control system part pilot relay commutation circuit, another part be used for liquid crystal display module test socket to be measured in tested liquid crystal display module element carry out communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733138 CN203084104U (en) | 2012-12-27 | 2012-12-27 | OTP burning and upper/lower-limit voltage detecting system of liquid crystal display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733138 CN203084104U (en) | 2012-12-27 | 2012-12-27 | OTP burning and upper/lower-limit voltage detecting system of liquid crystal display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203084104U true CN203084104U (en) | 2013-07-24 |
Family
ID=48829929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220733138 Expired - Fee Related CN203084104U (en) | 2012-12-27 | 2012-12-27 | OTP burning and upper/lower-limit voltage detecting system of liquid crystal display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203084104U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090153A (en) * | 2014-06-18 | 2014-10-08 | 武汉精测电子技术股份有限公司 | Detection system and detection method of liquid crystal module multi-channel power supply |
| CN104199364A (en) * | 2014-09-15 | 2014-12-10 | 格力电器（武汉）有限公司 | Display panel test system |
| CN112735309A (en) * | 2020-12-04 | 2021-04-30 | 安徽金视界光电科技有限公司 | STN liquid crystal display OTP (one time programmable) burning instrument and burning method |
-
2012
- 2012-12-27 CN CN 201220733138 patent/CN203084104U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090153A (en) * | 2014-06-18 | 2014-10-08 | 武汉精测电子技术股份有限公司 | Detection system and detection method of liquid crystal module multi-channel power supply |
| CN104090153B (en) * | 2014-06-18 | 2017-02-15 | 武汉精测电子技术股份有限公司 | Detection system and detection method of liquid crystal module multi-channel power supply |
| CN104199364A (en) * | 2014-09-15 | 2014-12-10 | 格力电器（武汉）有限公司 | Display panel test system |
| CN112735309A (en) * | 2020-12-04 | 2021-04-30 | 安徽金视界光电科技有限公司 | STN liquid crystal display OTP (one time programmable) burning instrument and burning method |
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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 |
Granted publication date: 20130724 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |