CN106019647A - Liquid crystal module 1-wire write-in and write-in function test system and method - Google Patents
Liquid crystal module 1-wire write-in and write-in function test system and method Download PDFInfo
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- CN106019647A CN106019647A CN201610292040.7A CN201610292040A CN106019647A CN 106019647 A CN106019647 A CN 106019647A CN 201610292040 A CN201610292040 A CN 201610292040A CN 106019647 A CN106019647 A CN 106019647A
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- module
- write
- vcom
- wire
- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The invention relates to the technical field of liquid crystal module test, and particularly relates to a liquid crystal module 1-wire write-in and write-in function test system and method. The liquid crystal module 1-wire write-in and write-in function test system includes a man-machine module, a system power source module for supplying power to the system, a main control module, a digital to analog conversion module, and a controllable power source module; the controllable power source module is used for supplying power to a TCON board of a liquid crystal module to be tested; the man-machine module is used for receiving a vcom signal fed back by the main control module and sending a vcom operation command to the main control module; the main control module sends the vcom operation signal to the digital to analog conversion module through an I2C channel; and the digital to analog conversion module sends the vcom operation signal to the TCON board of the liquid crystal module to be tested through a 1-wire bus. The liquid crystal module 1-wire write-in and write-in function test system is light, movable, can be conveniently operated by a worker, and is low in cost. 1-wire adjustment and write-in can be performed on the liquid crystal module by operating a key board, and adjustment and write-in data can be displayed in an LED screen, and the display interface is simple and visual.
Description
Technical field
The present invention relates to liquid crystal module detection technique field, be specifically related to a kind of liquid crystal module
1-wire write and write-in functions test system and method.
Background technology
1-Wire bus is a simple signal circuit, can pass through shared data
Line realizes master controller and one or more half-duplex bidirectional communication between device.Liquid
Brilliant module 1-Wire function is to read regulation write liquid crystal VCOM voltage based on 1-wire bus
Reach the function of calibrating crystal module flicker level.
Liquid crystal module 1-wire write at present is required to, by computer, connect PG module (image
Signal generating module) one by one module write, operate relatively complicated, and time-consumingly the longest, write
Enter inefficiency.
And for the detection of write-in functions, be all to control liquid crystal module detecting system by computer to enter
Row test, there is following drawback in this kind of method of testing:
(1) computer controlled interface content is loaded down with trivial details, and operating process is complex, affects testing efficiency；
(2) heavier due to computer body, not easily shifted, the operation for tester has the biggest
Limitation；
(3) computer is relatively costly, may need to use multiple computers for the test of large batch of module,
Testing cost is required the highest.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides a kind of liquid crystal module 1-wire write and writes
Entering function test system and method, these apparatus and method can realize no write de-lay, and removes other
The operation of tester is disturbed by function, simplifies, make 1-wire function detection mode and
Result is simple and clear, solves the limitation brought operator due to testing tool, reduces and survey
Examination cost.
For one liquid crystal module 1-wire of the present invention write and write-in functions test system, its skill
Art scheme is, including: man-machine module be the system power supply module of system power supply, also includes main
Control module, D/A converter module and controllable electric power module, described controllable electric power module is for for treating
The TCON plate surveying liquid crystal module is powered, and described man-machine module is used for receiving main control module feedback
Vcom signal and to main control module send vcom operational order, described main control module lead to
Cross I2Vcom is operated signal and sends to D/A converter module by C-channel, described digital-to-analogue conversion mould
Vcom is operated signal by 1-wire bus and sends the TCON plate to LCD module under test by block.
Further, described man-machine module includes guidance panel and display screen, described main control module
Vcom operational order input be connected with the vcom operational order outfan of guidance panel,
The vcom signal output part of described main control module is connected with the vcom signal input part of display screen.
Further, the vcom operation signal output part connection of described D/A converter module is put
Big device, the signal output part of described amplifier is connected with 1-wire bus, and described amplifier is
1～N times of amplifier in any one.
Further, time-sequence control mode, the sequencing contro of described time-sequence control mode are also included
Signal input part is connected with the timing control signal outfan of main control module, described sequencing contro mould
Tuber controls I according to timing control signal2C-channel is opened, 1-wire bus is opened, controllable electric power
The order that module is amplifier and LCD module under test TCON plate is powered.
Further, also including picture signal generation module, described picture signal generation module is used
In for LCD module under test point screen, generate flicker picture.
For one liquid crystal module 1-wire of the present invention write and write-in functions method of testing, its skill
Art scheme is, controllable electric power module is that the TCON plate of LCD module under test is powered, by behaviour
Make panel and select the IC type of LCD module under test TCON plate, enter vcom shaping modes；
By the way of adding and subtracting vcom value on guidance panel, send vcom to main control module regulate
Instruction, vcom is regulated signal and is sent to D/A converter module, digital-to-analogue conversion mould by main control module
Block vcom is regulated signal be converted into corresponding analog voltage waveform and by 1-wire bus defeated
Going out to LCD module under test TCON plate, LCD module under test TCON plate carries out vcom electricity
After pressure regulation, this vcom value is carried out write storage.
Further, connect picture signal generation module and light LCD module under test, by liquid to be measured
Brilliant module switches to flash picture, selects LCD module under test TCON plate by guidance panel
IC type, enter vcom shaping modes；
By the way of adding and subtracting vcom value on guidance panel, send vcom to main control module regulate
Instruction, vcom is regulated signal and is sent to D/A converter module, digital-to-analogue conversion mould by main control module
Block vcom is regulated signal be converted into corresponding analog voltage waveform and by 1-wire bus defeated
Go out to LCD module under test, observe LCD module under test screen flicker degree, be constantly adjusted,
During until LCD module under test screen flicker degree reaches minimum, LCD module under test is by now
Vcom value writes.
Further, after vcom value is write by described LCD module under test TCON plate, restart
LCD module under test TCON plate, is again introduced into vcom shaping modes, if what display screen showed
Vcom value is the vcom value sent before guidance panel, then explanation 1-wire write-in functions is good
Good.
Further, the analog voltage waveform of described D/A converter module output is put by amplifier
Export through 1-wire bus after great.
Further, after connecting described LCD module under test TCON plate, time-sequence control mode
Controlling controllable electric power module is that LCD module under test TCON plate is powered；
When guidance panel is after main control module sends vcom regulating command, described sequencing contro mould
Tuber opens I in order according to timing control signal2C-channel, 1-wire bus run and control can
Control power module is that amplifier is powered.
Beneficial effects of the present invention: this device departs from the PG module TCON directly to liquid crystal module
Plate carries out 1-wire regulation and write, saves the time connecting PG module, is greatly improved
Work efficiency.The changeable multiple test formula of device program, puts many moneys module, and the suitability is wide
General.Additionally, use guidance panel and display screen to replace computer, fuselage is relatively light, and mobility is relatively
By force, convenient working person operates, and for computer, cost is relatively low, it is possible to decrease testing cost.
This system tune is write data and be can be displayed in LED display, display interface simple, intuitive；Permissible
Depart from PG and directly LCD module under test TCON plate is carried out examination, detect that 1-wire writes
Dysfunction product.
Accompanying drawing explanation
Fig. 1 is liquid crystal module 1-wire of the present invention regulation write-in functions test system connection diagram；
In figure: 1 main control module, 2 D/A converter modules, 3 amplifiers, 4 operating surfaces
Plate, 5 display screens, 6 system power supply modules, 7 controllable electric power modules, 8 sequencing contro
Module, 9 PG modules, 10 liquid crystal module.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
It is illustrated in figure 1 liquid crystal module 1-wire regulation write-in functions test system module connection figure,
It includes main control module 1, D/A converter module 2, amplifier 3, guidance panel 4, display screen
5, system power supply module 6, controllable electric power module 7, time-sequence control mode 8, PG module 9,
Liquid crystal module 10.
The vcom operational order input of main control module 1 refers to the vcom operation of guidance panel 4
Outfan is made to connect, the vcom signal output part of main control module 1 and the vcom of display screen 5
Signal input part connects.The vcom operation signal output part of main control module 1 passes through I2C-channel
Operate signal input part with the vcom of D/A converter module 2 to be connected, D/A converter module 2
Vcom operation signal output part is connected with amplifier 3, is connected to finally by 1-wire bus
LCD module under test 10.220v civil power is converted to DC source (3.3v) through AC-DC module,
And export respectively to system power supply module 6 and controllable electric power module 7, system power supply module 6 is
Main control module 1 provides basic running voltage (such as 5v, 3.3v, 1.8v), controllable electric power mould
Block 7 provides 5v/12v voltage for module TCON plate, and provides 15v when vcom writes
Voltage.Wherein, amplifier 3 can select 1～n times of amplifier as required.
1-wire regulation, write and the write-in functions of LCD module under test is detected, can
LCD module under test is detected based on PG module 9, it is also possible to individually to liquid crystal to be measured
The TCON plate of module detects.The first embodiment is to be measured based on PG module 9
Liquid crystal module detects, and its process is as follows:
Connect PG module 9 and light LCD module under test 10, LCD module under test 10 is switched to
Flicker picture, connects native system, selects LCD module under test 10TCON by guidance panel 4
The IC type (such as IML7991) of plate, enters vcom shaping modes, simultaneously main control module 1
Obtain the current vcom value of LCD module under test 10 and be sent to display screen 5 display output.
If obtaining successfully, then display screen 5 shows current VCOM value, if unsuccessful, points out wire rod
Connection failure.
After display screen display 5 shows current VCOM value, by adding and subtracting vcom on guidance panel 4
The mode of value uses RS232 communication protocol to send vcom regulating command to main control module 1, main
After control module 1 receives vcom regulating command, control to time-sequence control mode 8 transmission timing
Signal, time-sequence control mode 8 opens I the most successively according to timing control signal2C-channel,
1-wire bus run and control controllable electric power module 8 provide 12V voltage for amplifier 3.Main
Control module 1 passes through I2Vcom is regulated signal and is sent to D/A converter module 2 by C-channel, number
Vcom is regulated signal and is converted into corresponding analog voltage waveform and passes through by mould modular converter 2
1-wire bus exports to LCD module under test 10, if dodging occurs in LCD module under test 10 screen
Bright, then the 1-wire regulatory function of explanation LCD module under test 10 is normal, will after regulation
This vcom value writes, and this vcom value feeds back to display screen display output.
After confirming that regulatory function is normal, restart LCD module under test 10, be again introduced into vcom and adjust
Joint pattern, if the vcom value of display screen 5 display is the vcom sent before guidance panel 4
Value, then the 1-wire write-in functions of explanation LCD module under test 10 is normal.Also can be at client check
Stand or to flicker picture, switchback observes whether vcom value writes successfully again.
During the vcom magnitude of voltage of LCD module under test is adjusted, operation operation
Panel 4, plus-minus vcom value is minimum to module displays flicker degree, and operation guidance panel 4 writes
This optimum, it is possible to achieve the debugging of module optimum state.
The second embodiment is for departing from PG module, individually to LCD module under test TCON plate
Writing and detect, its process is as follows:
System is connected with LCD module under test TCON plate, guidance panel 4 selects individually
Detection module TCON plate mode, selects LCD module under test 10TCON by guidance panel 4
The IC type of plate, enters vcom shaping modes.Main control module 1 gives time-sequence control mode 8
Transmission timing control signal, time-sequence control mode 8 controls controllable electric power module 7 for liquid crystal to be measured
Module TCON plate output 5v or 12v voltage, main control module 1 obtains liquid crystal mould to be measured simultaneously
Organize the current vcom value of 10 and be sent to display screen 5 display output；
After display screen 5 shows current VCOM value, by adding and subtracting vcom on guidance panel 4
The mode of value uses RS232 communication protocol to send vcom regulating command to main control module 1, main
After control module 1 receives vcom regulating command, control to time-sequence control mode 8 transmission timing
Signal, time-sequence control mode 8 opens I the most successively according to timing control signal2C-channel,
1-wire bus run and control controllable electric power module 7 provide 12V voltage for amplifier 3.Main
Control module 1 passes through I2Vcom is regulated signal and is sent to D/A converter module 2 by C-channel, number
Vcom is regulated signal and is converted into corresponding analog voltage waveform and passes through by mould modular converter 2
1-wire bus exports to LCD module under test TCON plate, LCD module under test TCON plate
Write this vcom value, and this vcom value is fed back to display screen display output.
Again power on after LCD module under test TCON plate power-off, enter vcom shaping modes,
If the vcom value of display screen 5 display is the vcom value sent before guidance panel 4, then say
The 1-wire write-in functions of bright LCD module under test 10 is normal.
The above, the only detailed description of the invention of the present invention, it is noted that any be familiar with basis
The technical staff in field in the technical scope that disclosed herein, the change that can readily occur in or
Replace, all should contain within protection scope of the present invention.
Claims (10)
1. the write of liquid crystal module 1-wire and a write-in functions test system, including man-machine module
With the system power supply module (6) for system power supply, it is characterised in that: also include main control module (1),
D/A converter module (2) and controllable electric power module (7), described main control module (1) passes through I2C
Vcom is operated signal and sends to D/A converter module (2), described D/A converter module by passage
(2) by 1-wire bus, vcom is operated signal to send to LCD module under test (10)
TCON plate, described controllable electric power module (7) is for for LCD module under test (10)
TCON plate is powered, and described man-machine module is used for receiving the vcom that main control module (1) feeds back
Signal and to main control module (1) send vcom operational order.
2. liquid crystal module 1-wire write as claimed in claim 1 and write-in functions test system,
It is characterized in that: described man-machine module includes guidance panel (4) and display screen (5), described
The vcom behaviour of the vcom operational order input of main control module (1) and guidance panel (4)
Make instruction output end to connect, the vcom signal output part of described main control module (1) and display
The vcom signal input part of screen (5) connects.
3. liquid crystal module 1-wire write as claimed in claim 1 and write-in functions test system,
It is characterized in that: the vcom operation signal output part of described D/A converter module (2) connects
Amplifier (3), the signal output part of described amplifier (3) is had to be connected with 1-wire bus,
Described amplifier (3) is 1～any one in N times of amplifier.
4. liquid crystal module 1-wire write as claimed in claim 3 and write-in functions test system,
It is characterized in that: also include time-sequence control mode (8), described time-sequence control mode (8)
Timing control signal input is connected with the timing control signal outfan of main control module (1),
Described time-sequence control mode (8) controls I according to timing control signal2C-channel is opened, 1-wire
Bus is opened, controllable electric power module (7) is amplifier (3) and LCD module under test TCON
The order that plate is powered.
5. liquid crystal module 1-wire write as claimed in claim 1 and write-in functions test system,
It is characterized in that: also include picture signal generation module (9), described picture signal generation module
(9) for shielding for LCD module under test (10) point, flicker picture is generated.
6. a liquid crystal module 1-wire write and write-in functions method of testing, it is characterised in that:
TCON plate for LCD module under test (10) is powered, and is selected by guidance panel (4)
Select the IC type of LCD module under test (10) TCON plate, enter vcom shaping modes；
Send out to main control module (1) by the way of in guidance panel (4) upper plus-minus vcom value
Vcom regulating command, main control module (1) is sent vcom to be regulated signal and is sent to digital-to-analogue conversion
Module (2), vcom is regulated signal and is converted into corresponding simulation by D/A converter module (2)
Voltage waveform is also exported to LCD module under test TCON plate, liquid to be measured by 1-wire bus
This vcom value is carried out write after carrying out vcom voltage-regulation and stores by brilliant module TCON plate.
7. a liquid crystal module 1-wire write and write-in functions method of testing, it is characterised in that:
Connect picture signal generation module (9) and light LCD module under test (10), by operation
Panel (4) selects the IC type of LCD module under test (10) TCON plate, enters vcom
Shaping modes；
Send out to main control module (1) by the way of in guidance panel (4) upper plus-minus vcom value
Vcom regulating command, main control module (1) is sent vcom to be regulated signal and is sent to digital-to-analogue conversion
Module (2), vcom is regulated signal and is converted into corresponding simulation by D/A converter module (2)
Voltage waveform is also exported to LCD module under test (10) by 1-wire bus, observes liquid to be measured
Brilliant module (10) screen flicker degree, is constantly adjusted, until LCD module under test (10)
When screen flicker degree reaches minimum, vcom value now is carried out by LCD module under test (10)
Write.
8. liquid crystal module 1-wire write as claimed in claim 6 and write-in functions method of testing,
It is characterized in that: after vcom value is write by described LCD module under test TCON plate, restart and treat
Survey liquid crystal module TCON plate, be again introduced into vcom shaping modes, if display screen (5) shows
The vcom value shown is the vcom value sent before guidance panel (4), then 1-wire is described
Write-in functions is good.
9. liquid crystal module 1-wire write as claimed in claim 6 and write-in functions method of testing,
It is characterized in that, the analog voltage waveform that described D/A converter module (2) exports is by amplifying
Device (3) exports through 1-wire bus after amplifying.
10. liquid crystal module 1-wire write as claimed in claim 9 and write-in functions test side
Method, it is characterised in that:
After connecting described LCD module under test TCON plate, time-sequence control mode (8) controls
Controllable electric power module (7) is that LCD module under test TCON plate is powered；
When guidance panel (4) is after main control module (1) sends vcom regulating command, described
Time-sequence control mode (8) opens I in order according to timing control signal2C-channel, 1-wire
Bus run and control controllable electric power module (7) are amplifier (3) power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292040.7A CN106019647B (en) | 2016-05-05 | 2016-05-05 | Liquid crystal module 1-wire writing system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292040.7A CN106019647B (en) | 2016-05-05 | 2016-05-05 | Liquid crystal module 1-wire writing system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106019647A true CN106019647A (en) | 2016-10-12 |
| CN106019647B CN106019647B (en) | 2019-06-07 |
Family
ID=57081222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610292040.7A Active CN106019647B (en) | 2016-05-05 | 2016-05-05 | Liquid crystal module 1-wire writing system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106997743A (en) * | 2017-06-02 | 2017-08-01 | 江苏久正光电有限公司 | A kind of test device of Thin Film Transistor-LCD |
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| CN201765405U (en) * | 2010-05-18 | 2011-03-16 | 创维液晶器件(深圳)有限公司 | Liquid crystal module testing device and liquid crystal module tester |
| CN201804530U (en) * | 2010-09-10 | 2011-04-20 | 京东方科技集团股份有限公司 | Liquid crystal display panel detecting device |
| CN103366657A (en) * | 2013-07-17 | 2013-10-23 | 青岛海信电器股份有限公司 | Flicker regulating system |
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| KR100422166B1 (en) * | 2003-07-23 | 2004-03-11 | (주)테이크시스템즈 | Inverter for checking lcd module |
| CN1916699A (en) * | 2005-08-19 | 2007-02-21 | 群康科技(深圳)有限公司 | System and method for testing image plane on liquid crystal |
| CN201765405U (en) * | 2010-05-18 | 2011-03-16 | 创维液晶器件(深圳)有限公司 | Liquid crystal module testing device and liquid crystal module tester |
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| CN106997743A (en) * | 2017-06-02 | 2017-08-01 | 江苏久正光电有限公司 | A kind of test device of Thin Film Transistor-LCD |
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| Publication number | Publication date |
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| CN106019647B (en) | 2019-06-07 |
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