CN203232220U - Liquid crystal display panel detecting equipment - Google Patents

Liquid crystal display panel detecting equipment Download PDF

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Publication number
CN203232220U
CN203232220U CN 201320213363 CN201320213363U CN203232220U CN 203232220 U CN203232220 U CN 203232220U CN 201320213363 CN201320213363 CN 201320213363 CN 201320213363 U CN201320213363 U CN 201320213363U CN 203232220 U CN203232220 U CN 203232220U
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CN
China
Prior art keywords
liquid crystal
crystal panel
abnormity point
module
image
Prior art date
Application number
CN 201320213363
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Chinese (zh)
Inventor
孙晖
金用燮
吴飞飞
刘晓涛
朱奎志
李世军
Original Assignee
合肥京东方光电科技有限公司
京东方科技集团股份有限公司
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Priority to CN 201320213363 priority Critical patent/CN203232220U/en
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Publication of CN203232220U publication Critical patent/CN203232220U/en

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Abstract

The utility model discloses liquid crystal display panel detecting equipment. The liquid crystal display panel detecting equipment comprises a test signal unit, an abnormal point detecting unit and an abnormal point position confirming unit, wherein the test signal unit is used for providing test signals for a liquid crystal display panel to be detected, the abnormal point detecting unit is used for detecting abnormal points on the liquid crystal display panel to be detected according to the test signals, and the abnormal point position confirming unit is used for confirming the positions of the abnormal points on the liquid crystal display panel according to the detected abnormal points. The liquid crystal display panel detecting equipment confirms the positions of the abnormal points on the liquid crystal display panel via acquired abnormal images and realizes precise positioning of the abnormal points, so that the liquid crystal display panel with the abnormal points can be maintained, resource waste is avoided, and production cost is reduced.

Description

A kind of liquid crystal panel detection device
Technical field
The utility model relates to the field tests of liquid crystal panel, is specifically related to a kind of liquid crystal panel detection device.
Background technology
Display technique development in recent years is very fast, and particularly liquid crystal panel displays makes it with traditional cathode-ray tube display very big difference is arranged with its diverse demonstration and manufacturing technology.Traditional cathode-ray tube display volume is big, power consumption is high, display color is poor, and liquid crystal panel displays has volume little (thickness of flat-panel monitor is no more than 10cm usually), low in energy consumption, effects such as display frame good, low radiation.Liquid crystal panel displays is with characteristics such as its complete complanation, light, thin, power savings, inevitablely occupy consequence in the demonstration field in future.
In the flat pannel display manufacture process, each operation relates to the detection link, particularly becomes the detection behind the box particularly important.Its uses probe unit and the termination contact of panel in the special checkout equipment, the detection picture of signal generator generation is transferred to carries out bad detection in the panel.
It is that one to one full-contact detects that traditional panel lighting detects, and this mode advantage of lighting a lamp is full emulation, high precision.Shortcoming is that number of probes is many, and cost is high, and probe fold resistance extreme difference often takes place to detect the image quality instability and the equipment bright line occurs.
And terminal short circuit mode detection technique is with its number of probes few (generally having only four to five), seldom have advantages such as equipment bright line extensively to be promoted.The drawback of a maximum of this terminal short circuit detection technique is to carry out uploading of coordinate to bad point, thereby can't keep in repair some recoverable bad points, has caused the waste of product.
The utility model content
Can't obtain the particular location of abnormity point on the panel in order to solve existing panel detection, can't keep in repair some recoverable bad points, cause the problem of the waste of product.
The technical solution adopted in the utility model is: a kind of liquid crystal panel detection device comprises:
TSU test signal unit is used for providing test signal to liquid crystal panel to be detected;
The abnormal point measurement unit is for the abnormity point that detects according to described test signal on the liquid crystal panel to be detected;
The abnormity point position determination unit is used for determining the position of described abnormity point on liquid crystal panel according to detected abnormity point.
Preferably, described TSU test signal unit further comprises,
Signal generator module is for generation of test signal;
Signal input module is connected with signal generator module, is used for the test signal that provides is delivered to liquid crystal panel to be tested.
Preferably, described abnormal point measurement unit further comprises,
The image-capture module is used for grasping the abnormal image on the liquid crystal panel;
Mobile module is used for mobile described image-capture module and carries out image-capture.
Preferably, described image-capture module comprises pick-up lens, and described mobile module comprises motor and track, and described track is used for limiting the motion track of pick-up lens, and described motor is connected with described pick-up lens, is used for driving the pick-up lens motion.
Preferably, described abnormity point position determination unit further comprises:
Standard picture is preserved module, is used for preserving the standard picture that liquid crystal panel has coordinate;
The image comparing module is used for the abnormal image and the standard picture that obtain are compared, with the correspondence position of abnormity point and standard picture on definite abnormal image;
The first abnormity point coordinate output module is used for the coordinate according to comparison result output abnormality point.
Preferably, described abnormal point measurement unit further comprises:
Scan module is used for the abnormal image on the scanning liquid crystal panel, to obtain the gray scale of abnormal image;
The abnormity point detecting module is used for surveying abnormity point according to the gray scale of abnormal image.
Preferably, described abnormity point position determination unit further comprises,
Electrode wires coordinate determination module is used for obtaining the grid line at abnormity point place and the coordinate of data line;
The second abnormity point coordinate output module is used for the grid line at output abnormality point place and the coordinate of data line.
Preferably, described equipment also comprises:
Worktable;
The panel receiving element is used for receiving liquid crystal panel to be detected;
The panel transmission unit, the liquid crystal panel to be detected that is used for receiving is sent to described worktable.
Preferably, described equipment also comprises abnormity point coordinate uploading unit, is used for the coordinate of abnormity point is uploaded to signal conditioning package.
Preferably, described equipment also comprises display device, is used for showing that liquid crystal panel is at the image of testing process.
The beneficial effects of the utility model are: the abnormal image of liquid crystal panel detection device of the present utility model by obtaining, determine the position of abnormity point on liquid crystal panel, realization is to the accurate location of abnormity point, thereby can the liquid crystal panel with abnormity point be keeped in repair, avoid the wasting of resources, reduced manufacturing cost.
Description of drawings
Fig. 1 is the structured flowchart of the checkout equipment of a kind of embodiment of the utility model;
Fig. 2 is the structured flowchart of the TSU test signal unit of a kind of embodiment of the utility model;
Fig. 3 is the structured flowchart of the abnormal point measurement unit of a kind of embodiment of the utility model;
Fig. 4 is the structured flowchart of the abnormity point position determination unit of a kind of embodiment of the utility model;
Fig. 5 is the structured flowchart of the checkout equipment of second kind of embodiment of the utility model;
Fig. 6 is the structured flowchart of second kind of embodiment of abnormal point measurement unit of the present utility model;
Fig. 7 is the structured flowchart of second kind of embodiment of abnormity point position determination unit of the present utility model.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 1, the structured flowchart for the checkout equipment of a kind of embodiment of the utility model comprises:
TSU test signal unit 100 is used for providing test signal to liquid crystal panel to be detected;
Abnormal point measurement unit 200 is for the abnormity point that detects according to described test signal on the liquid crystal panel to be detected;
Abnormity point position determination unit 300 is used for determining the position of described abnormity point on liquid crystal panel according to detected abnormity point.
Liquid crystal panel detection device of the present utility model is by detecting the abnormity point on the test fluid crystal panel, determine the position of abnormity point on liquid crystal panel, realization is to the accurate location of abnormity point on the liquid crystal panel, thereby can the liquid crystal panel with abnormity point be keeped in repair, avoid the wasting of resources, reduced manufacturing cost.
As shown in Figure 2, be the structured flowchart of the TSU test signal unit of a kind of embodiment of the utility model, this TSU test signal unit is used for providing to liquid crystal panel and shows and detect picture, further comprise,
Signal generator module 101 is for generation of test signal.
Signal input module 102 is connected with signal generator module, and the test signal that is used for producing is delivered to liquid crystal panel to be tested.
TSU test signal unit 100 of the present utility model can be the various devices that test pictures can be provided to panel such as the machine of lighting a lamp, and provides test pictures to give liquid crystal panel to be detected.
As shown in Figure 3, be the structured flowchart of the abnormal point measurement unit of a kind of embodiment of the utility model, abnormal point measurement unit 200 of the present utility model, the abnormity point for detection of on the picture to be tested further comprises,
Image-capture module 201 is used for grasping the abnormal image on the liquid crystal panel;
Mobile module 202 is used for mobile described image-capture module and carries out image-capture.
Image-capture module 201 of the present utility model can be image-capture devices such as pick-up lens, camera, detects abnormity point by obtaining abnormal image.Mobile module of the present utility model is used for driving the movement of image-capture module, the mobile module of present embodiment comprises motor and track, described track is used for limiting the motion track of pick-up lens, and described motor is connected with described pick-up lens, is used for driving the pick-up lens motion.
Abnormity point position determination unit 300 of the present utility model is used for determining the position of abnormity point on liquid crystal panel.In order to shorten the time of image comparison, liquid crystal panel is divided into a plurality of zones according to resolution, abnormity point to obtain with each zone be unit.For example, liquid crystal panel is divided into m*n(m, n is natural number) equal portions, what obtain is equal portions with abnormity point at every turn.
As shown in Figure 4, be the structured flowchart of the abnormity point position determination unit of a kind of embodiment of the utility model, this abnormity point position determination unit 300 comprises:
Standard picture is preserved module 301, is used for preserving the standard picture of the liquid crystal panel with coordinate, and the picture of this standard picture is the picture of non-defective unit liquid crystal panel, can be various storeies for the storage standards image, and this standard picture subscript is marked with coordinate.
Image comparing module 302 is compared for the abnormal image that will obtain and the standard picture of preservation, with the correspondence position of abnormity point and standard picture on definite abnormal image.This image comparing module can be comparer, compare one by one by abnormal image and the standard picture that will obtain, because it is different that the gray scale of abnormal image and standard picture exists, thereby can determine the difference of both images, the process of comparison can be to scan line by line or by row, can also be to compare with pursuing pixel.
The first abnormity point coordinate output module 303 is used for the coordinate according to abnormity point on the described comparison result output abnormality image.Obtain the different of abnormal image and standard picture gray scale according to scanning, determine the coordinate of abnormity point.
Obtaining of the coordinate of abnormity point of the present utility model is that the establishing criteria image obtains, and can coordinate be set at standard picture, according to the comparison result output coordinate.If be not same ratio between the coordinate of liquid crystal panel and the standard picture, also need to determine according to the coordinate transformation relation of standard picture and liquid crystal panel.Preferably, present embodiment is according to the resolution of liquid crystal panel and the corresponding relation of standard picture, carries out coordinate transformation and obtains, thereby can obtain the coordinate of abnormity point according to standard picture.
As shown in Figure 5, structured flowchart for the checkout equipment of second kind of embodiment of the utility model, the checkout equipment of this embodiment and first kind of embodiment are basic identical, difference is that this equipment also comprises abnormity point coordinate uploading unit 400, be used for the coordinate of abnormity point is uploaded to signal conditioning package, so that obtain the accurate coordinates of abnormity point during maintenance.
Checkout equipment of the present utility model also comprises display device, is connected with liquid crystal panel to be detected, is used for showing that liquid crystal panel is at the image of testing process.Display device of the present utility model can be display screen etc., can intuitively observe the image in the testing process.
Checkout equipment of the present utility model also comprises:
Worktable is used for carrying liquid crystal panel to be detected.
The panel receiving element is used for receiving liquid crystal panel to be detected;
The panel transmission unit, the liquid crystal panel to be detected that is used for receiving is sent to described worktable.
As shown in Figure 6, structured flowchart for second kind of embodiment of abnormal point measurement unit of the present utility model, abnormal point measurement unit 200 of the present utility model, the abnormal image that grasps except above-mentioned utilization obtains, can also be directly to detect abnormity point, the abnormal point measurement unit of this embodiment comprises
Scan module 201 ', be used for the abnormal image on the scanning liquid crystal panel, to obtain the gray scale of abnormal image;
Abnormity point detecting module 202 ', be used for surveying abnormity point according to the gray scale of abnormal image.
Scan module directly scans the image at abnormity point place, can be that optical elements such as ccd image sensor scan, to obtain the gray scale abnormity point of abnormal image.The abnormity point detecting module is used for surveying abnormity point, because gray scale and the normal picture of abnormity point are distinct, thereby can directly judge abnormity point according to gray scale.For the ease of observing the gray scale of abnormity point, image can also be amplified.
As shown in Figure 7, structured flowchart for second kind of embodiment of abnormity point position determination unit of the present utility model, abnormity point position determination unit 300 of the present utility model is carried out the abnormity point coordinate determines except utilizing standard picture, can also utilize the electrode wires on the liquid crystal panel to determine, the abnormity point position determination unit of this scheme comprises:
Electrode wires coordinate determination module 301 ', be used for obtaining the grid line at abnormity point place and the coordinate of data line;
The second abnormity point coordinate output module 302 ', be used for the grid line at output abnormality point place and the coordinate of data line.
Because each liquid crystal panel is provided with data line arranged in a crossed manner and grid line, can watch data line and grid line at the edge of liquid crystal panel.For this reason, the present embodiment coordinate that obtains this abnormity point according to grid line and the data line at abnormity point place.Present embodiment adopts camera lens to move to face plate edge along the data line of this abnormity point, finds the coordinate of data line.Drive camera lens then and get back to bad point, move to face plate edge along the grid line of this abnormity point, find the coordinate of grid line, the coordinate that has namely constituted abnormity point according to data line coordinate and the grid line coordinate of this abnormity point.
Below in conjunction with embodiment implementation procedure of the present utility model is described in detail:
Embodiment one:
The liquid crystal panel detection device of present embodiment is to compare the coordinate of determining abnormity point by the abnormal image that obtains and standard picture.
The TSU test signal unit 100 of the liquid crystal checkout equipment of present embodiment comprises the machine of lighting a lamp, this machine of lighting a lamp comprises signal generator and probe unit, abnormal point measurement unit 200 comprises pick-up lens, guide rail and CD-ROM drive motor, and abnormity point position determination unit 300 comprises image processor.Behind liquid crystal panel access arrangement to be measured, action by checkout equipment reaches the process of lighting a lamp, operator detects, when operator finds have bright spot bad, at this moment move to defective region by CD-ROM drive motor control pick-up lens, carry out Image Acquisition, and an image that gets access to is sent to image processor, image processor finds abnormity point by the standard picture with coordinate of the abnormal image that obtains with storage in advance compared, and the display abnormality point coordinate.Operator is uploaded the abnormity point coordinate, and the liquid crystal panel of having surveyed is delivered to the maintenance station and carried out the abnormity point maintenance.
Below the implementation procedure of the abnormal image processing unit of present embodiment is described in detail:
At first liquid crystal panel is carried out the zone according to resolution and divide, be divided into the m*n equal portions, for normal non-defective unit liquid crystal panel, carry out picture by the m*n equal portions that are divided into and obtain, the m*n that an obtains picture deposits host computer in, and the resolution of each picture is a*b.When the overlooker need detect certain zone, servo motor control pick-up lens arrived the corresponding region (abnormity point generation area) of liquid crystal panel automatically and carries out image-capture.The image that obtains (resolution a*b) compares with the standard picture of preserving in advance (resolution a*b), by computer image is lined by line scan, and after the discovery gray scale abnormity point, judges the coordinate at abnormity point place in the picture.
Suppose that liquid crystal panel resolution is e*f, software has been divided into the m*n piece, then the image resolution ratio of each piece is (e/n, f/m), the vertical p piece of horizontal k piece zone on the standard picture has been clicked bad, then the servo motor setting in motion begins to carry out image scanning to the starting point of the vertical p piece of horizontal k piece.
Image origin and abnormity point are calculated by following computing formula, the abnormity point coordinate=(k*e)/n+x, (p*f)/m+y.Those skilled in the art can realize above-mentioned computation process by simulation or digital adding/subtraction circuit, only needs to set suitable parameters and gets final product.Also can realize above-mentioned calculating by integrated circuit or processor.
Embodiment two:
The liquid crystal panel detection device of present embodiment is to obtain coordinate at the cabling edge of panel after the gray scale abnormity point is judged in the scanning of defective region.
The structure of present embodiment and first embodiment are basic identical, and difference is that abnormity point probe unit 200 comprises ccd image sensor, and abnormal image position determination unit 300 comprises transportable pick-up lens.
Behind the measured panel access arrangement, a series of actions by checkout equipment reaches the process of lighting a lamp, operator detects, when operator is found to have bright spot bad, servo motor control ccd image sensor moves to defective region, carry out intensity contrast scanning, mechanism stops action when finding the gray scale abnormity point, and carries out accurately location.Direction according to signal lead after finish the location drives the edge that pick-up lens is gone to this abnormity point data line, the coordinate values that engraves when reading in array processes, get back to abnormity point then, at the edge of going to grid line according to the direction of switch cabling, the coordinate values that engraves when reading in array processes namely obtains the abnormity point coordinate.Operator manually or by system is uploaded the abnormity point coordinate automatically to signal conditioning package, and the liquid crystal panel that will survey is delivered to the maintenance station and carried out abnormity point and keep in repair.
Liquid crystal panel detection device of the present utility model is by obtaining the abnormity point on the test fluid crystal panel, determine the position of abnormity point on liquid crystal panel, realization is to the accurate location of abnormity point, thereby can the liquid crystal panel with abnormity point be keeped in repair, avoid the wasting of resources, reduced manufacturing cost.
More than be in order to make those of ordinary skills understand the present invention; and the detailed description that the present invention is carried out; but can expect; in not breaking away from the scope that claim of the present invention contains, can also make other variation and modification, these variations and revising all in protection scope of the present invention.

Claims (10)

1. a liquid crystal panel detection device is characterized in that, comprising:
TSU test signal unit is used for providing test signal to liquid crystal panel to be detected;
The abnormal point measurement unit is for the abnormity point that detects according to described test signal on the liquid crystal panel to be detected;
The abnormity point position determination unit is used for determining the position of described abnormity point on liquid crystal panel according to detected abnormity point.
2. liquid crystal panel detection device according to claim 1 is characterized in that, described TSU test signal unit further comprises,
Signal generator module is for generation of test signal;
Signal input module is connected with signal generator module, is used for the test signal that provides is delivered to liquid crystal panel to be tested.
3. liquid crystal panel detection device according to claim 1 is characterized in that, described abnormal point measurement unit further comprises,
The image-capture module is used for grasping the abnormal image on the liquid crystal panel;
Mobile module is used for mobile described image-capture module and carries out image-capture.
4. liquid crystal panel detection device according to claim 3, it is characterized in that, described image-capture module comprises pick-up lens, described mobile module comprises motor and track, described track is used for limiting the motion track of pick-up lens, described motor is connected with described pick-up lens, is used for driving the pick-up lens motion.
5. liquid crystal panel detection device according to claim 3 is characterized in that, described abnormity point position determination unit further comprises:
Standard picture is preserved module, is used for preserving the standard picture that liquid crystal panel has coordinate;
The image comparing module is used for the abnormal image and the standard picture that obtain are compared, with the correspondence position of abnormity point and standard picture on definite abnormal image;
The first abnormity point coordinate output module is used for the coordinate according to comparison result output abnormality point.
6. liquid crystal panel detection device according to claim 1 is characterized in that, described abnormal point measurement unit further comprises:
Scan module is used for the abnormal image on the scanning liquid crystal panel, to obtain the gray scale of abnormal image;
The abnormity point detecting module is used for surveying abnormity point according to the gray scale of abnormal image.
7. liquid crystal panel detection device according to claim 6 is characterized in that, described abnormity point position determination unit further comprises,
Electrode wires coordinate determination module is used for obtaining the grid line at abnormity point place and the coordinate of data line;
The second abnormity point coordinate output module is used for the grid line at output abnormality point place and the coordinate of data line.
8. according to each described liquid crystal panel detection device of claim 1-7, it is characterized in that described equipment also comprises:
Worktable;
The panel receiving element is used for receiving liquid crystal panel to be detected;
The panel transmission unit, the liquid crystal panel to be detected that is used for receiving is sent to described worktable.
9. according to each described liquid crystal panel detection device of claim 1-7, it is characterized in that described equipment also comprises abnormity point coordinate uploading unit, be used for the coordinate of abnormity point is uploaded to signal conditioning package.
10. according to each described liquid crystal panel detection device of claim 1-7, it is characterized in that described equipment also comprises display device, be used for showing that liquid crystal panel is at the image of testing process.
CN 201320213363 2013-04-24 2013-04-24 Liquid crystal display panel detecting equipment CN203232220U (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103885231A (en) * 2014-03-11 2014-06-25 京东方科技集团股份有限公司 Display panel marking device and display panel marking method
CN104933978A (en) * 2015-07-02 2015-09-23 京东方科技集团股份有限公司 Detection method and detection apparatus for display panel
CN105845062A (en) * 2016-03-31 2016-08-10 京东方科技集团股份有限公司 Method and system of detecting display panels, and batch detection method of display panels
CN107065372A (en) * 2017-04-19 2017-08-18 无锡威迪变色玻璃有限公司 A kind of electrochomeric glass self-repairing method and system
CN107132233A (en) * 2017-05-25 2017-09-05 京东方科技集团股份有限公司 The checking method and system of bad coordinate position in display panel
CN107576481A (en) * 2016-07-04 2018-01-12 威光自动化科技股份有限公司 The detection method and its device of optic panel
CN108333805A (en) * 2018-02-26 2018-07-27 京东方科技集团股份有限公司 Bad point coordinates automatic testing method and device, equipment and storage medium
CN108464845A (en) * 2018-01-22 2018-08-31 苏州佳世达电通有限公司 A kind of exception detecting method and ultrasonic diagnostic system of ultrasonic probe
CN108572178A (en) * 2018-04-10 2018-09-25 苏州久越金属科技有限公司 A kind of high-accuracy high stability detection method
CN109916597A (en) * 2019-04-18 2019-06-21 深圳市华星光电半导体显示技术有限公司 Optical detection apparatus and optical detecting method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103885231A (en) * 2014-03-11 2014-06-25 京东方科技集团股份有限公司 Display panel marking device and display panel marking method
CN103885231B (en) * 2014-03-11 2016-04-20 京东方科技集团股份有限公司 Display panel labelling apparatus and display panel labeling method
CN104933978A (en) * 2015-07-02 2015-09-23 京东方科技集团股份有限公司 Detection method and detection apparatus for display panel
CN105845062A (en) * 2016-03-31 2016-08-10 京东方科技集团股份有限公司 Method and system of detecting display panels, and batch detection method of display panels
CN107576481A (en) * 2016-07-04 2018-01-12 威光自动化科技股份有限公司 The detection method and its device of optic panel
CN107065372A (en) * 2017-04-19 2017-08-18 无锡威迪变色玻璃有限公司 A kind of electrochomeric glass self-repairing method and system
CN107132233A (en) * 2017-05-25 2017-09-05 京东方科技集团股份有限公司 The checking method and system of bad coordinate position in display panel
CN107132233B (en) * 2017-05-25 2020-06-12 京东方科技集团股份有限公司 Method and system for verifying bad coordinate position in display panel
CN108464845A (en) * 2018-01-22 2018-08-31 苏州佳世达电通有限公司 A kind of exception detecting method and ultrasonic diagnostic system of ultrasonic probe
CN108333805A (en) * 2018-02-26 2018-07-27 京东方科技集团股份有限公司 Bad point coordinates automatic testing method and device, equipment and storage medium
CN108572178A (en) * 2018-04-10 2018-09-25 苏州久越金属科技有限公司 A kind of high-accuracy high stability detection method
CN109916597A (en) * 2019-04-18 2019-06-21 深圳市华星光电半导体显示技术有限公司 Optical detection apparatus and optical detecting method

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