CN109884813A - TFT colour liquid crystal display device universal test jig - Google Patents
TFT colour liquid crystal display device universal test jig Download PDFInfo
- Publication number
- CN109884813A CN109884813A CN201910311479.3A CN201910311479A CN109884813A CN 109884813 A CN109884813 A CN 109884813A CN 201910311479 A CN201910311479 A CN 201910311479A CN 109884813 A CN109884813 A CN 109884813A
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- testing
- liquid crystal
- crystal display
- side plate
- test
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- 238000012360 testing method Methods 0.000 title claims abstract description 120
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920001342 Bakelite® Polymers 0.000 claims description 4
- 239000004637 bakelite Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000270722 Crocodylidae Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000005561 Musa balbisiana Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a kind of TFT colour liquid crystal display device universal test jigs, the special test panel on testing jig is set to including the testing host being set in testing jig and by grafting route connecting test mainboard and with embedded mode, testing jig is equipped with the control keyboard for passing through connection with testing host, power switch key is integrated on control keyboard, Pause key, reset key and point aobvious key, be additionally provided on testing jig testing host external power supply socket and external ground receptacle, adjust the knob of test size of current, the external voltage table of detection test voltage and electric current is just, cathode socket and external impressed current table are just, cathode socket, being also provided on testing jig makes the exposed opening of the picture burning USB port of testing host and burning program port.When the present invention switches project testing, special test panel and again burning program are only needed to change, input cost is greatly reduced, thread-changing is quick, and maintenance cost is low.
Description
Technical field
The present invention relates to colour liquid crystal display device testing field, specially a kind of TFT colour liquid crystal display device universal test
Jig.
Background technique
With the development of display technology, colour liquid crystal display device will develop towards ultra high-definition, highlighted, ultra-thin direction, colored liquid
Crystal display (LCM) has the advantages that light-weight, thickness is thin low with power etc., is widely used in mobile terminal, smart home, function
In the devices such as wearing, functional finance, robot.
As the product category of colour liquid crystal display device is more and more, customized product has become production mainstream, due to producing
Product model is various, and production thread-changing is frequent, therefore the requirement to testing jig is also higher and higher, and the production of existing jig is simple and crude, surveys
It tries mainboard and route is all exposed, testing jig contact short circuit and damage are difficult to avoid, and testing jig is by manual or pneumatic press strip
FPC contact conducting is crimped, FPC test interface is damaged and is increased, while being increased to aligning accuracy requirement, testing efficiency is obviously not
It is high.
And if made according to special fixture, jig cost is very high, is unfavorable for development of company and market competition.
Summary of the invention
In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a kind of TFT of wide adaptability
Colour liquid crystal display device universal test jig.
It is able to solve the TFT colour liquid crystal display device universal test jig of above-mentioned technical problem, technical solution includes setting
It is in the testing host in testing jig and by grafting route connecting test mainboard and special on testing jig with embedded mode
With test panel, the testing jig is equipped with testing host through the control keyboard of connection, is collected on the control keyboard
At having power switch key, Pause key, reset key and point aobvious key, be additionally provided on testing jig testing host external power supply socket and
External ground receptacle prevents the external voltage table for testing the current limliting protective tube of current overload, detection test voltage and electric current positive and negative
Pole socket and external impressed current table positive and negative electrode socket are also provided with the picture burning USB port and journey for making testing host on testing jig
The exposed opening in sequence replication port.
A kind of structure of the testing jig includes being installed on bottom plate and front end is low and front side board and back side panel that rear end is high,
The front side board passes through left and right side plate with the left and right end of back side panel respectively and connects, close to right side plate or left plate in front side board and
Latus inframedium is connected between back side panel, the high and low fall of the gradient matching front side board and back side panel at the top of left and right side plate and latus inframedium
The bayonet of upper and lower position is offered at the top of gradient, left plate and latus inframedium or right side plate and latus inframedium.
Further, the special test panel cover is on left plate and latus inframedium and forward and backward side plate, special test panel
(the position of positioning special test panel in corresponding bayonet on forward and backward clamp insertion left plate and latus inframedium on left and right end face
It sets)；Or special test panel cover is on right side plate and latus inframedium and forward and backward side plate, on the left and right end face of special test panel
On forward and backward clamp insertion right side plate and latus inframedium in corresponding bayonet (position of positioning special test panel).
Further, the control keyboard uses finger-board, and the finger-board is fixedly installed in right side plate and forward and backward side plate
On or finger-board be fixedly installed on left plate and forward and backward side plate.
Conventionally, the front side board and back side panel, left plate, latus inframedium and right side plate and finger-board are all made of bakelite system
Make.
Conventional, the external power supply socket, external ground receptacle, the knob of size of current, external voltage table positive and negative electrode
Socket, external impressed current table positive and negative electrode socket are set to back side panel top, described to be opened in back side panel lower part.
The top gradient of the front side board and back side panel and latus inframedium is 45 °, keeps special test panel and water with this
Plane is at 45 °, makes special test panel and visually direction is in 90 ° naturally, reduces testing staff and bends over the feeling of fatigue and just of test
In the comfortable operation of testing staff.
Beneficial effects of the present invention:
1, it is all to can be used for current TFT colour liquid crystal display device for TFT colour liquid crystal display device universal test jig of the present invention
Detection project, it is versatile, easy to use, thread-changing speed is fast, while can protect testing host and route, increase testing jig
Service life.
2, testing jig uses 45 ° to incline and puts anti-fatigue design in the present invention, very convenient testing staff's operation, is that a kind of energy is full
The testing product of sufficient production requirement.
3, the present invention only needs to change special test panel and again burning program, significantly when switching project testing
Input cost is reduced, thread-changing is quick, and maintenance cost is low.
Detailed description of the invention
Fig. 1 is the structural front view of one embodiment of the present invention.
Fig. 2 (a) is the structure chart of left plate in Fig. 1 embodiment.
Fig. 2 (b) is the structure chart of latus inframedium in Fig. 1 embodiment.
Fig. 2 (c) is the structure chart of right side plate in Fig. 1 embodiment.
Fig. 3 is the A direction view in Fig. 1 embodiment.
Fig. 4 is the B direction view in Fig. 1 embodiment.
Figure number mark: 1, front side board；2, clamp；3, special test panel；4, power switch；5, Pause key；6, reset key；
7, divide aobvious key；8, finger-board；9, external power supply socket；10, current limliting protective tube；11, external ground receptacle；12, external voltage
Table anode socket；13, external voltage table cathode socket；14, external impressed current table anode socket；15, external impressed current table cathode socket；
16, picture burning USB port；17, burning program port；18, it is open；19, back side panel；20, bottom plate；21, left plate；22, right
Side plate；23, latus inframedium；24, bayonet；25, screw；26, blow vent；27, mouth is tested；28, notch；29, battery main switch.
Specific embodiment
Illustrated embodiment is described further technical solution of the present invention with reference to the accompanying drawing.
TFT colour liquid crystal display device universal test jig of the present invention, structure include testing jig, testing host and dedicated survey
Try panel 3 and finger-board 8.
The testing jig includes using the bottom plate 20 of red bakelite production, left plate 21, right side plate 22, latus inframedium 23, preceding
Side plate 1 and back side panel 19, the front side board 1 vertically-mounted (connection of screw 25) is in 20 front end of bottom plate, the 19 (height of back side panel
Greater than front side board 1) vertically-mounted (connection of screw 25) in 20 rear end of bottom plate, the left plate 21 install (connection of screw 25) in
Between the left end of forward and backward side plate 1,19, the right side plate 22 install (connection of screw 25) in forward and backward side plate 1,19 right end it
Between, the latus inframedium 23 installs (connection of screw 25) between forward and backward side plate 1,19 close to right side plate 22, left plate 21, middle side
The front and back ends height of plate 23 and right side plate 22 flush in the top of front side board 1 and back side panel 19 respectively and make left plate 21, in
The top surface of side plate 23 and right side plate 22 is the inclined-plane at 45 ° with horizontal plane, is symmetrically opened on the top surface of left plate 21 and latus inframedium 23
Equipped with upper and lower bayonet 24, blow vent 26, left plate are offered on the plate body of left plate 21, latus inframedium 23 and right side plate 22
21 and right side plate 22 on blow vent 26 also can be used as carrying handle, as shown in Figure 1, Figure 2 (a), Fig. 2 (b), Fig. 2 (c), shown in Fig. 3.
The size matching front side board 1 and 23 shape of back side panel 19 and left plate 21 and latus inframedium of the special test panel 3
At sheet frame mouth, special test panel 3 covers on corresponding sheet frame mouth, the upper and lower clamp in 3 left end face of special test panel
2 are correspondingly embedded in the upper and lower bayonet 24 on 21 top of left plate, and the upper and lower clamp 2 in 3 right end face of special test panel is right
It should be embedded in the upper and lower bayonet 24 on 23 top of latus inframedium, pass through the special test panel 3 of clamp 2 and the cooperation positioning of bayonet 24
It is tilted horizontal by 45 °, as shown in Figure 1, Figure 3.
The finger-board 8 (using red bakelite production) for stripe board, size matching front side board 1 and back side panel 19 and
The sheet frame mouth that right side plate 22 and latus inframedium 23 are formed, finger-board 8 cover on corresponding sheet frame mouth and with 25 installation fixing positions of screw
Set, finger-board 8 in place and special test panel 3 exist together on an inclined-plane, be provided with from top to bottom on finger-board 8 power switch 4,
Pause key 5, reset key 6 and point aobvious key 7, the power switch 4, Pause key 5, reset key 6 and point aobvious key 7 are respectively by each
From connection testing host, the testing host screw 25 is fixedly installed in the bottom between left plate 21 and latus inframedium 23
On plate 20, as shown in Figure 1, Figure 3.
The top of the back side panel 19 is equipped with the external power supply socket 9 to testing host power supply (7.5V), equipped with preventing from surveying
Examination open circuit causes (500MA) the current limliting protective tube 10 of current overload, equipped with the external ground receptacle 11 that testing host can be made to be grounded
(the ESD electrostatic generated in operating process is imported the earth) detects the external voltage table anode socket 12 of test voltage and external
Voltmeter cathode socket 13, the external impressed current table anode socket 14 and external impressed current table cathode socket 15 of detection test electric current, after
The lower part of side plate 19 offers opening 18 between two parties, and the opening 18 can make the picture burning USB of battery main switch 29, testing host
(debugging and burning are shown for port 16 (different for replacing picture function according to dimension of picture pixel) and burning program port 17
Program function) it is exposed, as shown in Figure 4.
The special test panel 3 can design multiple types for different model colour liquid crystal display device, before detection
Corresponding special test panel 3 is chosen, is first connect the special test panel 3 with testing host by grafting route, then will be special
With the lid of test panel 3 on testing jig, the detection component by testing mouth 27 on special test panel 3 can be to colored liquid
Crystal display is tested, and offers colour liquid crystal display device in place on the special test panel 3 of 27 lower section of test mouth
Notch 28, the protocol step of test are as follows:
1, device prepares: a power supply line, a 7.5V power supply adaptor, an ammeter connecting line, an intelligence electricity
Flow table.
2, line: 7.5V power supply adaptor is inserted into the external power supply socket 9 on back side panel 19, intelligent amperemeter is connected
External impressed current table anode socket 14 and external impressed current table cathode socket 15 on banana plug one end of wiring and back side panel 19 into
Row grafting, intelligent amperemeter line other end crocodile clip are clipped on the binding post of ammeter (black, red will corresponding to), ammeter access
220 power supply lines.
3, line finishes: ammeter power switch being opened, ammeter numerical value is zeroed.
4, ammeter upper limit value is set: inputting password after pressing SET key, then presses SET key and enters upper limit current setting catalogue,
SET key is pressed after translating into AH1 with " ↑ key " or " ↓ key " and enters current upper limit value setting interface, after inputting * * * MAX according to operation card
It presses and turns to END on SET key, exit upper limit current setting, complete upper limit current setting.
5, start test product: mould group golden finger (the being professional term) line of first colour liquid crystal display device is inserted
The connector that special test panel 3 is tested in mouth 27 is connect, pressure connector flip lid makes mould group golden finger line and connector complete
After connection, mould group golden finger is placed into notch 28 in place.
6, power switch 4 (battery main switch 29 has turned on before) is turned to the one end of " I ", testing host power supply, mould group
Golden finger is lit, and shows the observation display effect of the first picture (black picture).
7, show that picture has the delay time of 0.5S~3S and turns to the observation display effect of next picture automatically later, with
This, which analogizes, observes the last one flowers and plants graphic image, and the current value of each picture is deviated in test process, as long as electric
Fluxion value exceeds the upper bound current value of ammeter setting, and ammeter indicator light lights, buzzer warning reminds operator that this is colored
Liquid crystal display is that high current NG product needs isolation processing.
8, it during automatic point aobvious, if it is desired to being observed for a long time on some picture, presses pause and builds 5.
9, after dividing aobvious pause, a point aobvious key 7 is pressed the button if continuing to watch next picture, picture of point aobvious meeting in pause
On the basis of continue next point it is aobvious.
10, divide after the completion of showing, such as need to see again from the first picture to read through, then press reset key 6 and program is allowed to open again
Begin.
11, after the completion of testing, power switch 4 is turned to the one end " O ", and power supply is closed, and mould group golden finger display screen, which extinguishes, to be become
It is black, connector is renovated and is opened, mould group golden finger is removed, completes test.
12, after removing first colour liquid crystal display device, continue the test of the second colour liquid crystal display device, step repeats the
5 steps~11 steps, and so on.
Claims (7)
1.TFT colour liquid crystal display device universal test jig, it is characterised in that: including be set to testing jig in testing host and
The special test panel (3) on testing jig (1), the test are set to by grafting route connecting test mainboard and with embedded mode
Frame (1) is equipped with testing host through the control keyboard of connection, is integrated with power switch key on the control keyboard
(4), Pause key (5), reset key (6) and point aobvious key (7) are additionally provided with the external power supply socket of testing host on testing jig (1)
(9) and external ground receptacle (11), the current limliting protective tube (10) for preventing test current overload, detection test voltage and electric current it is outer
Voltmeter positive and negative electrode socket (12,13) and external impressed current table positive and negative electrode socket (14,15) are connect, testing jig is also provided on (1)
Make the picture burning USB port (16) of testing host and the opening (18) that burning program port (17) are exposed.
2. TFT colour liquid crystal display device universal test jig according to claim 1, it is characterised in that: the testing jig
It (1) include being installed on bottom plate (20) and front end is low and front side board (1) and back side panel (19) that rear end is high, the front side board (1)
Pass through left and right side plate (21,22) connection respectively with the left and right end of back side panel (19), close to right side plate (22) or left plate (21)
It is connected between front side board (1) and back side panel (19) latus inframedium (23), at the top of left and right side plate (21,22) and latus inframedium (23)
The gradient matches the high and low fall gradient of front side board (1) and back side panel (19), left plate (21) and latus inframedium (23) or right side plate
(22) and at the top of latus inframedium (23) bayonet (24) of upper and lower position is offered.
3. TFT colour liquid crystal display device universal test jig according to claim 2, it is characterised in that: the dedicated survey
Examination panel (3) is covered on left plate (21) and latus inframedium (23) and forward and backward side plate (1,19), and special test panel (3) is left and right
In forward and backward clamp (2) insertion left plate (21) and latus inframedium (23) on end face in corresponding bayonet (24)；Or special test face
Plate (3) covers on right side plate (22) and latus inframedium (23) and forward and backward side plate (1,19), special test panel (3) left and right end face
On forward and backward clamp (2) insertion right side plate (22) and latus inframedium (23) on corresponding bayonet (24) it is interior.
4. TFT colour liquid crystal display device universal test jig according to claim 3, it is characterised in that: the control key
Disk includes finger-board (8), and the finger-board (8) is fixedly installed on right side plate (22) and forward and backward side plate (1,19) or finger-board
(8) it is fixedly installed on left plate (21) and forward and backward side plate (1,19).
5. TFT colour liquid crystal display device universal test jig according to claim 4, it is characterised in that: the front side board
(1) and back side panel (19), left plate (21), latus inframedium (23) and right side plate (22) and finger-board (8) are all made of bakelite production.
6. TFT colour liquid crystal display device universal test jig, feature according to any one of claim 2~5 exist
In: the external power supply socket (9), external ground receptacle (11), the knob (10) of size of current, external voltage table positive and negative electrode
Socket (12,13), external impressed current table positive and negative electrode socket (14,15) are set to back side panel (19) top, and the opening (18) is opened in
Back side panel (19) lower part.
7. TFT colour liquid crystal display device universal test jig, feature according to any one of claim 2~5 exist
In: the top gradient of the front side board (1) and back side panel (19) and latus inframedium (23) is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311479.3A CN109884813B (en) | 2019-04-18 | 2019-04-18 | Universal test fixture for TFT color LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311479.3A CN109884813B (en) | 2019-04-18 | 2019-04-18 | Universal test fixture for TFT color LCD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109884813A true CN109884813A (en) | 2019-06-14 |
| CN109884813B CN109884813B (en) | 2023-12-22 |
Family
ID=66937651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910311479.3A Active CN109884813B (en) | 2019-04-18 | 2019-04-18 | Universal test fixture for TFT color LCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109884813B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050079840A (en) * | 2004-02-07 | 2005-08-11 | (주)테이크시스템즈 | Tft-lcd module test apparatus |
| CN204359825U (en) * | 2015-01-04 | 2015-05-27 | 昆山凯耀电子科技有限公司 | Circuit board for testing function of main machine |
| CN204575716U (en) * | 2015-01-16 | 2015-08-19 | 高锋科技（惠州）有限公司 | A kind of LCM test board with current monitoring function |
| CN204807859U (en) * | 2015-07-20 | 2015-11-25 | 赤峰拓佳光电有限公司 | Liquid crystal display module test fixture |
| CN205016205U (en) * | 2015-08-26 | 2016-02-03 | 深圳市中深光电有限公司 | Liquid crystal display module testboard and liquid crystal display module test system thereof |
| CN205608338U (en) * | 2016-05-19 | 2016-09-28 | 重庆美景光电科技有限公司 | LCM module testing arrangement |
| CN206057733U (en) * | 2016-08-31 | 2017-03-29 | 深圳市朝旭升科技有限公司 | Novel liquid crystal display module test equipment |
| CN106652861A (en) * | 2016-11-30 | 2017-05-10 | 广州视源电子科技股份有限公司 | Display screen detection method and device |
| CN207624349U (en) * | 2017-11-06 | 2018-07-17 | 意力(广州)电子科技有限公司 | Display screen tests smelting tool |
| CN207651150U (en) * | 2017-08-17 | 2018-07-24 | 西安易朴通讯技术有限公司 | A kind of current sensing means and system for screen detection |
| CN108594483A (en) * | 2018-04-04 | 2018-09-28 | Oppo广东移动通信有限公司 | The test method of display screen test fixture and display screen |
| CN209657028U (en) * | 2019-04-18 | 2019-11-19 | 广西天山电子股份有限公司 | TFT colour liquid crystal display device universal test jig |
-
2019
- 2019-04-18 CN CN201910311479.3A patent/CN109884813B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050079840A (en) * | 2004-02-07 | 2005-08-11 | (주)테이크시스템즈 | Tft-lcd module test apparatus |
| CN204359825U (en) * | 2015-01-04 | 2015-05-27 | 昆山凯耀电子科技有限公司 | Circuit board for testing function of main machine |
| CN204575716U (en) * | 2015-01-16 | 2015-08-19 | 高锋科技（惠州）有限公司 | A kind of LCM test board with current monitoring function |
| CN204807859U (en) * | 2015-07-20 | 2015-11-25 | 赤峰拓佳光电有限公司 | Liquid crystal display module test fixture |
| CN205016205U (en) * | 2015-08-26 | 2016-02-03 | 深圳市中深光电有限公司 | Liquid crystal display module testboard and liquid crystal display module test system thereof |
| CN205608338U (en) * | 2016-05-19 | 2016-09-28 | 重庆美景光电科技有限公司 | LCM module testing arrangement |
| CN206057733U (en) * | 2016-08-31 | 2017-03-29 | 深圳市朝旭升科技有限公司 | Novel liquid crystal display module test equipment |
| CN106652861A (en) * | 2016-11-30 | 2017-05-10 | 广州视源电子科技股份有限公司 | Display screen detection method and device |
| CN207651150U (en) * | 2017-08-17 | 2018-07-24 | 西安易朴通讯技术有限公司 | A kind of current sensing means and system for screen detection |
| CN207624349U (en) * | 2017-11-06 | 2018-07-17 | 意力(广州)电子科技有限公司 | Display screen tests smelting tool |
| CN108594483A (en) * | 2018-04-04 | 2018-09-28 | Oppo广东移动通信有限公司 | The test method of display screen test fixture and display screen |
| CN209657028U (en) * | 2019-04-18 | 2019-11-19 | 广西天山电子股份有限公司 | TFT colour liquid crystal display device universal test jig |
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| Publication number | Publication date |
|---|---|
| CN109884813B (en) | 2023-12-22 |
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