CN113934028A - Display panel alignment detection jig and alignment detection method - Google Patents
Display panel alignment detection jig and alignment detection method Download PDFInfo
- Publication number
- CN113934028A CN113934028A CN202111230115.6A CN202111230115A CN113934028A CN 113934028 A CN113934028 A CN 113934028A CN 202111230115 A CN202111230115 A CN 202111230115A CN 113934028 A CN113934028 A CN 113934028A
- Authority
- CN
- China
- Prior art keywords
- display panel
- pressing
- brightness
- alignment detection
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 238000003825 pressing Methods 0.000 claims abstract description 163
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 11
- 239000000523 sample Substances 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 description 14
- 239000010408 film Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- 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 application discloses a display panel alignment detection jig and an alignment detection method, wherein the alignment detection jig comprises a base, wherein a mounting area for fixing a display panel is arranged on the base; the lighting module is electrically connected with the display panel and is used for lighting the display panel; the operating table is arranged on the base and provided with a pressing module and a brightness acquisition module, wherein the pressing module is used for applying pressure to the display panel along a first direction; the brightness acquisition module is used for acquiring brightness information of the display panel, dislocation offset is aggravated by pressing of the pressing module, the display brightness is changed to a large extent, the brightness of the display panel is acquired by the brightness acquisition module, the alignment condition between the color film substrate and the array substrate of the display panel is judged by comparing the brightness change degree, the condition of omission can be reduced, and the product percent of pass is improved.
Description
Technical Field
The application generally relates to the technical field of display panel detection, in particular to a display panel alignment detection jig and an alignment detection method.
Background
In an AR/VR near-eye display product, a pair of an array substrate and a color film substrate may have a misalignment, and the misalignment may cause a decrease in aperture ratio, light leakage, and the like. The conventional technology for detecting the alignment condition is to monitor the alignment condition of the cross marks at the edges of the array substrate and the color film substrate in the process of alignment to judge whether the alignment is correct, but for the size of a high PPI (pixel density) product, it is difficult to directly detect the alignment deviation in a measurement mode.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a display panel alignment detection jig and an alignment detection method, which are used for detecting the alignment condition of an array substrate and a color film substrate based on the pressing brightness fluctuation.
In a first aspect, the present invention provides a display panel alignment detection fixture, including:
the display device comprises a base, a display panel and a control unit, wherein the base is provided with an installation area for fixing the display panel;
the lighting module is electrically connected with the display panel and is used for lighting the display panel;
an operation table arranged on the base, a pressing module and a brightness acquisition module arranged on the operation table,
the pressing module is used for pressing the display panel along a first direction, and the first direction is perpendicular to the direction of the display panel;
the brightness acquisition module is used for acquiring brightness information of the display panel.
Optionally, the brightness acquisition module includes an optical probe aligned with a central region of the display panel.
Optionally, the number of the pressing modules is at least one group, and one group of the pressing modules includes two pressing mechanisms symmetrically arranged on two sides of the brightness acquisition module.
Optionally, the pressing mechanism comprises a pressing plate, a pressing post and a balancing post, wherein,
one end of the pressing column is fixed with the pressing plate, and the other end of the pressing column penetrates through the mounting hole in the operating platform and extends to the mounting area;
one end of the balance column is fixed with the pressing plate, and the other end of the balance column is installed in an interactive mode with the operating platform.
Optionally, the pressing mechanism further comprises at least one return spring and at least one adjustable limiting rod arranged between the pressing plate and the operating platform, wherein,
one end of the return spring is in contact with the pressing plate, and the other end of the return spring is in contact with the operating table;
the adjustable limiting rod is used for limiting the pressing distance of the pressing mechanism to the display panel.
Optionally, the number of the return springs is at least two, and the two return springs are sleeved on the pressing column or the balance column.
Optionally, one end of the adjustable limiting rod is fixed on the operating table, and an adjustable gap is formed between the other end of the adjustable limiting rod and the pressing plate; alternatively, the first and second electrodes may be,
one end of the adjustable limiting rod is fixed on the pressing plate, and an adjustable gap is formed between the other end of the adjustable limiting rod and the operating platform.
Optionally, the pressing column is located at an edge of the display panel, and a flexible pressing block is arranged at one end of the pressing column, which is in contact with the display panel.
Optionally, the console is movably mounted with the base through a positioning mechanism, the positioning mechanism is configured to limit the console to move along a second direction relative to the console, and the second moving direction is parallel to the display panel direction.
In a second aspect, the present invention provides a display panel alignment detection method, which uses the display panel alignment detection fixture, and the method includes:
lighting up the display panel;
pressing a first side of the display panel along a first direction, and collecting first brightness information of a central area of the display panel;
pressing a second side of the display panel along a first direction, and collecting second brightness information of a central area of the display panel;
acquiring brightness fluctuation information through the first brightness information and the second brightness information;
and judging the alignment condition of the array substrate and the color film substrate on the display panel based on the brightness fluctuation information.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
The dislocation offset can be aggravated through pressing of the pressing module, the display brightness shows the change of a large degree, the brightness of the display panel is collected through the brightness collection module, the alignment condition between the color film substrate and the array substrate of the display panel is judged through comparing the brightness change degree, the detection result more accurate than the monitoring edge cross mark alignment condition can be provided through quantitative comparison of data collection, the condition of missing detection is reduced, and the product percent of pass is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 shows a schematic perspective view of an alignment detection fixture provided in an embodiment of the present application;
fig. 2 is a schematic left-view structural diagram of an alignment detection fixture according to an embodiment of the present application;
fig. 3 is a schematic top view illustrating a structure of an alignment inspection fixture according to an embodiment of the present application;
fig. 4 is a schematic flow chart illustrating an alignment detection method according to an embodiment of the present application;
fig. 5 shows an exemplary flowchart of a registration detection method provided in an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The display panel is exemplified by a Liquid Crystal Display (LCD), and includes a Color Filter Substrate (CF) corresponding to the Color Filter Substrate and responsible for Color display, and a Thin Film Transistor Array Substrate (TFT Array Substrate) corresponding to the Array Substrate and responsible for circuit control.
At present, a high proportion of poor lateral compression brightness occurs in a plurality of VR items with high screen pixel density (PPI), which causes the poor lateral compression brightness to be mainly caused by: VR project PPI is high, the outer edge distance of process elements is small, and the dislocation degree that probably appears to incline to the left or incline to the right when various membrane base plate and array substrate laminating are counterpointed will lead to the luminance of emergent light to take place the transform, and the finger will aggravate this kind of dislocation skew after pressing panel left side or right side to influence actual aperture opening ratio, cause the luminance variation on left side and right side to produce the difference, and the luminance variation difference is big more, then the dislocation skew is more serious, and the counterpoint of various membrane base plate and array substrate is worse.
The display panel alignment detection mechanism simulates finger pressing, and fluctuation of brightness information is collected through the brightness collection module 50, so that the alignment condition of the color film substrate and the array substrate is judged.
The present application will be described in detail with reference to the drawings and embodiments, and referring to fig. 1 to 3, an alignment detection fixture 1000 applied to a display panel according to an embodiment of the present application is shown.
The alignment detection jig 1000 comprises a base 10, wherein the base 10 is provided with a mounting area 101 for fixing a display panel; a lighting module 20 electrically connected to the display panel for lighting the display panel; the display device comprises an operation table 30 arranged on a base 10, wherein a pressing module 40 and a brightness acquisition module 50 are arranged on the operation table 30, wherein the pressing module 40 is used for pressing the display panel along a first direction; the brightness collecting module 50 is used for collecting brightness information of the display panel.
After the lighting module 20 lights up the display panel, the pressing module 40 on the operating table 30 is adjusted to move towards the display panel, and the display panel is pressed with a certain strength, at this time, when the color film substrate and the array substrate do not have a misalignment condition, a small misalignment offset or no misalignment offset may be caused by the pressing of the pressing module 40, and the display brightness shows a slight change or no change; when the color filter substrate and the array substrate are misaligned, the misalignment offset is increased by pressing the pressing module 40, and the display brightness is changed to a large extent.
In the embodiment of the application, the brightness of the display panel is collected through the brightness collection module 50, the alignment condition between the color film substrate and the array substrate of the display panel is judged by comparing the brightness change degree, and compared with the prior art, the detection result more accurate than the monitoring of the alignment condition of the edge cross mark can be provided through the quantitative comparison of data collection, the condition of missing detection is reduced, and the product percent of pass is improved.
It should be noted that, in the embodiment of the application, the substrate alignment condition of the display panel can be preliminarily detected and pre-judged at the lighting test stage, so that the process alignment abnormity is early warned, the module material is saved, the analysis efficiency of defective products is improved, the development and improvement period of new products can be greatly shortened, the improvement efficiency and the product yield are improved, and the application has wide applicability.
It should be noted that, the base 10 may be horizontally disposed, and a limiting groove or a limiting block for clamping and limiting the display panel is disposed at the mounting area 101, so as to prevent the display panel from moving in the detection process and affecting the detection result.
In the embodiment of the present application, a direction perpendicular to the surface of the display panel is defined as a first direction, and a direction parallel to the display panel is defined as a second direction. The second direction may be along the length direction of the display panel or along the width direction of the display panel, which is not limited in the present application.
In the embodiment of the present application, the installation position of the lighting module 20 is not particularly limited, and the lighting module may be installed differently depending on the application device. The lighting module 20 is used for lighting the display panel, in the embodiment of the present application, the display panel may be a molded device, and certainly, may also be a molded module.
In the embodiment of the present application, the specific structure of the lighting module 20 is not limited, and various structures existing in the prior art may be adopted, for example, the lighting module 20 may be a controller having an IO port, or may be a driver IC, such as an integrated circuit IC of model ET6214Y, the integrated circuit ET6214Y has a low cost, lighting can be easily and conveniently realized by writing an embedded driver, a display screen and an adjustment button for adjusting and controlling the lighting module 20 may be provided on the chassis 10, the adjustment button is used for controlling the on/off of the lighting module 20 and adjusting the brightness of the lighting module 20, and the display screen is used for displaying the real-time data state of the lighting module 20 during adjustment.
In this embodiment, after the display panel is placed, the pressing module 40 is used to press the display panel along a first direction, and the pressing module 40 moves downward perpendicular to the display panel and contacts the display panel to press the display panel.
The pressing mechanism comprises a pressing plate 401, a pressing column 402 and a balance column 403, wherein one end of the pressing column 402 is fixed with the pressing plate 401, and the other end of the pressing column 402 passes through the mounting hole 102 on the operating platform 30 and extends to the mounting area 101; one end of the balancing column 403 is fixed to the pressing plate 401, and the other end is installed to the console 30. The balance posts 403 are used for balancing the pressing board 401, in this embodiment, the balance posts 403 and the pressing posts 402 are respectively disposed on two sides of the pressing board 401, when the pressing mechanism presses the pressing board 401 manually or by a motor, the pressing board 401 moves toward the mounting area 101, the pressing posts 402 and the balance posts 403 are driven to move toward the mounting area 101, the pressing posts 402 press the display panel in the mounting area 101, and the balance posts 403 are matched and stretched between the console 30 and the pressing board 401.
The material of the pressing column 402 is not limited in this application, and includes, but is not limited to, resin, plastic, and rubber. The pressing columns 402 are not particularly limited in the present application, and preferably have a diameter of 0.5cm to 2 cm.
In some embodiments of the present application, as shown in fig. 1, the pressing mechanism further includes at least one return spring 404 and at least one adjustable stopper 405 disposed between the pressing plate 401 and the operation table 30, wherein one end of the return spring 404 is in contact with the pressing plate 401, and the other end is in contact with the operation table 30; the adjustable limiting rod 405 is used for limiting the pressing distance of the pressing mechanism to the display panel.
When the pressing plate 401 is forced to move toward the installation area 101 by the force applied to the pressing plate 401, the return spring 404 is in a compressed state, and after the brightness data acquisition is completed, the return spring 404 drives the pressing plate 401 to return to the original position under the elastic action of the return spring 404, and it should be noted that the return spring 404 may also be an elastic sheet, a hydraulic cylinder, an electric telescopic rod, or other structures.
Adjustable stop gear is used for injecing the application of force degree of pressing display panel according to post 402 contact, it is concrete, adjustable stop gear can be for adjustable connection the screens screw on pressing down board 401, screens screw and press down board 401 threaded connection, can press down board 401 adjusting position from top to bottom relatively, in the in-process that moves down according to board 401, adjustable stop gear's screens screw and operation panel 30 contact, press down board 401 this moment and stop moving down, the spacing effect to pressing down board 401 is realized, prevent to exert pressure the too big damage display panel of distance on the one hand, on the other hand conveniently prescribes a limit to the distance of exerting pressure.
In some embodiments of the present application, the number of the return springs 404 is at least two, and two return springs 404 are sleeved on the pressing column 402 or the balance column 403. In other embodiments, the return spring may be disposed at any position between the pressing plate and the operation table, and the number of the return springs may be plural in order to improve the return effect.
In some embodiments of the present application, one end of the adjustable limiting rod 405 is fixed on the console 30, and an adjustable gap is provided between the other end of the adjustable limiting rod 405 and the console 30; alternatively, one end of the adjustable limiting rod 405 is fixed on the pressing plate 401, and an adjustable gap is provided between the other end of the adjustable limiting rod 405 and the operation table 30.
In some embodiments of the present application, as shown in fig. 1, the pressing pillar 402 is located at an edge position of the display panel, and a flexible pressing block 406 is disposed at an end of the pressing pillar 402 contacting the display panel. In the process of pressing the display panel, the edge of the display panel is preferentially pressed, so that the dislocation and offset conditions between the color film substrate and the array substrate can be better reflected, and the arranged flexible pressing block 406 can reduce the impact on the display panel in the pressing process of the pressing column 402 and protect the display panel. The material of the flexible pressing block 406 is not particularly limited in the present application, and includes, but is not limited to, resin and rubber. Preferably, the diameter is set to 1cm, and the edge position of the display area is pressed by a flexible pressing block. Of course, the pressing position can be adjusted by the positioning mechanism during application.
It should be noted that, in the embodiment of the present application, the pressing positions of the pressing module 40 on the display panel are not specifically limited, and include, but are not limited to, the edge, the center, or other areas of the display panel except the edge and the center of the display panel, and the number of the pressing positions of the pressing module 40 is not specifically limited, and may be one, two, or more. Accordingly, the number of the pressing modules 40 is at least one, and one group of the pressing modules 40 includes two pressing mechanisms symmetrically disposed at both sides of the brightness acquisition module 50.
It should be further noted that, in the embodiment of the present application, through a set of symmetrically arranged pressing modules 40, the misalignment degree of the attachment of the color film substrate and the array substrate in the transverse position can be evaluated, and through a symmetrical manner, on one hand, the test positions can be located in the same transverse position, and in addition, the test precision can be improved, and through comparing the brightness fluctuation values of the symmetrical positions, the misalignment degree of the alignment can be obtained.
In the embodiment of the application, the pressing position is adjusted by arranging the positioning mechanism, so that pressing at different positions can be realized to obtain different brightness fluctuations. When using, can carry out position adjustment to a set of module of pressing through positioning mechanism to the realization is pressed different positions through a set of module of pressing, of course, can also include the multiunit and press module 40, and every group presses module 40 and carries out position adjustment through a positioning mechanism. The corresponding relationship between the positioning mechanism and the pressing module 40 is not limited herein.
In some embodiments of the present application, the console 30 is movably mounted to the base 10 by a positioning mechanism 70, and the positioning mechanism 70 is configured to limit movement of the console 30 relative to the console 30 in the second direction. In this embodiment, the position adjustment mechanism 70 includes an elongated or oval adjustment hole and a fixing screw, which are disposed on the console 30, a threaded hole for connecting with the fixing screw is disposed on the base 10, the console 30 is moved to a proper position, and the fixing screw is screwed into the threaded hole to adjust the position of the console 30 relative to the base 10, wherein the length direction of the adjustment hole is the same as the second direction, which may be the length direction or the width direction of the display panel.
In other embodiments of the present application, the mounting area 101 on the base can also be adjusted by the adjusting device to adjust the mounting area 101 on the base, so as to improve the universality of the structure of the present application, and different types of display panels can be used for testing. The form of the positioning mechanism and the adjusting device may include different structures, such as a detent mechanism, which is only exemplified in the embodiments of the present application.
When the pressing mechanisms on the two sides of the brightness acquisition module 50 press, quantitative control can be performed on the downward movement amount of the pressing mechanisms through a preset limiting mechanism, so that the pressure of twice pressing can be guaranteed to be equal, the influence of other factors on brightness detection data in the detection process can be eliminated, the proper downward movement amount can be adjusted for different display panels, the pressing strength is kept in a proper range, and the display panels are prevented from being crushed due to too large sinking displacement.
In this application embodiment, the test is performed through a manual pressing mode, and of course, in other embodiments, the pressing module 40 may be further pressed downward through an automatic mode, for example, a pneumatic element is disposed on the pressing column 402 or the pressing plate 401, for example, an air inlet of the air cylinder is disposed in the lower half cylinder, when the air cylinder is ventilated, the piston drives the piston rod to move upward and drives the attaching and sucking assembly to move upward, and when the air cylinder is disconnected, the piston drives the piston rod to move downward under the action of gravity.
It should be noted that, in a specific application, other moving mechanisms in the prior art may be further included to achieve the up-and-down movement of the pressing column 402 or the pressing plate 401, which is not described herein again. Of course, except presetting stop gear, can also be through pressure monitoring system to pressing mechanism's the quantitative control of displacement progress that moves down, pressure monitoring system can include pressure sensor, treater and display, pressure sensor can set up pressing mechanism's the tip of pressing for detect the pressure size that pressing mechanism acted on display panel, the treater is used for receiving data and shows the pressure value on the display, detect the staff and can observe real-time pressing condition through the display, the adjustment degree of pressing.
In some embodiments of the present application, brightness acquisition module 50 includes an optical probe 501 aimed at the center region of the display panel. The optical probe 501 can be an optical test probe with the model number of CA310, and is matched with an LED general-purpose measurement probe with the diameter of 27mm or 10mm, when the optical test probe CA310 is used for measuring an LCD display panel with LED backlight, the optical test probe has higher precision and higher speed, can check and adjust chromaticity, white balance, gamma and contrast, is more sensitive to low brightness, and is suitable for detecting brightness fluctuation.
It should be noted that, when the color filter substrate and the array substrate are aligned in a bonding manner, a misalignment offset which is shifted to the left or right may occur, which causes a change in luminance of the emergent light, and after the left side or the right side of the display panel is pressed, the misalignment offset may be increased, which affects an actual aperture ratio, thereby causing a difference in luminance variation between the left side and the right side.
Furthermore, at least one set of pressing mechanism of the pressing module 40 and the brightness collecting module 50 can also detect the brightness fluctuation rate, which is the absolute value of the brightness fluctuation value and Lv1And Lv2The ratio of the maximum value of (A) is P, the brightness fluctuation ratio is
Where ABS () represents an absolute value function and MAX () represents a maximum value function.
Detection of luminance fluctuation value can just be accomplished through a set of module 40 and the luminance collection module 50 of pressing of this application, it is concrete, in this embodiment, press module 40 to set up a set ofly, including setting up the pressing means in the luminance collection module 50 left and right sides, and pressing means presses down the position for display panel's left and right edges on display panel, when detecting, two pressing means push down simultaneously, press alone respectively to display panel's left edge and right edge, luminance collection module 50 records that the luminance collection data of pressing the left edge is Lv1And the brightness acquisition data of the pressed right edge is Lv2Calculating Lv1And Lv2The brightness fluctuation value can show the dislocation degree of the color film substrate and the array substrate, and the larger the brightness fluctuation value is, the larger the dislocation degree is, the smaller the brightness fluctuation value is, and the smaller the dislocation degree is.
For example, the degree of misalignment between the color filter substrate and the array substrate can be accurately represented by calculating the luminance fluctuation rate, for example, for a 3.2VR product, when the left side of the display panel is pressed, the center luminance is 160nit, and when the right side of the display panel is pressed, the center luminance is 200nit, the luminance fluctuation value is 40nit, the luminance fluctuation rate P is 20%, and a good product determination standard of the display panel can be set according to the luminance fluctuation rate, for example, the luminance fluctuation rate is excellent from 0% to 10%, the luminance fluctuation rate is good from 10% to 15%, the luminance fluctuation rate is good from 15% to 20%, and the luminance fluctuation rate is poor when greater than 20%.
It should be noted that, in the embodiment of the present application, the threshold values of the luminance fluctuation rates corresponding to good, good and bad products, respectively, are only schematic illustrations, and the threshold values that can be set in different application scenarios, for example, high PPI products, are relatively low, and the threshold values that can be set in some products with lower requirements are relatively loose. In the embodiment of the present application, a flexible determination may be achieved in the process of evaluating the degree of misalignment by setting a threshold, in the embodiment of the present application, the setting size of the threshold is not specifically limited, and when the threshold is set, the threshold may be a preset fixed threshold, a threshold obtained through a limited number of experiments, or a threshold obtained through a limited number of computer simulations.
The application further provides a display panel alignment detection method, which adopts the display panel alignment detection jig 1000, and the alignment detection method includes:
step 1001: lighting up the display panel;
step 2001: pressing a first side of the display panel along a first direction, and collecting first brightness information of a central area of the display panel;
step 3001: pressing a second side of the display panel along a first direction, and collecting second brightness information of a central area of the display panel;
step 4001: acquiring brightness fluctuation information through the first brightness information and the second brightness information;
step 5001: and judging the alignment condition of the array substrate and the color film substrate on the display panel based on the brightness fluctuation information.
Specifically, the step 10 includes placing a display panel in the mounting area 101 of the base 10, lighting the display panel, and Aging (high temperature Aging test) for 5 min.
the left pressing column 402 is pressed for a certain force to test the brightness Lv of the central area1(ii) a The right pressing column 402 is pressed down for a certain force to test the brightness Lv of the central area2。
The step 5001 includes establishing matching, classifying the current display panel products according to the brightness fluctuation rate P, determining that the current display panel products are excellent when the brightness fluctuation rate P is 0% -10%, good when the brightness fluctuation rate P is 10% -15%, passing when the brightness fluctuation rate P is 15% -20%, and poor when the brightness fluctuation rate P is greater than 20%, actually measuring the alignment condition of the entire array substrate and the color film substrate corresponding to the display panel, and finally corresponding to the VR product pressing brightness fluctuation rate, and determining the classification of the display panel.
In the embodiment of the present application, the fluctuation condition is obtained by pressing the two corresponding side positions of the display panel, and it should be noted that in the embodiment of the present application, it is preferable to perform a test in the transverse direction, and it is found whether the TFT and the CF are misaligned in terms of alignment by pressing. Through a set of pressing means of symmetry setting, can be so that the test position be in same horizontal position on the one hand, in addition, can also improve the measuring accuracy, through the luminance fluctuation value of comparison symmetric position, obtain the skew degree of counterpoint.
It is worth noting that in the embodiment of the application, the precision can be further detected through multiple measurements at different positions, and multiple data detection and collection can be performed through repeated operation steps at different transverse positions, which is shown in statistics that detection errors can be better reduced, and the reliability of data analysis can be improved. In the embodiment of the application, the LCD with high PPI, such as VR AV, has the detection of AI (AI-bit error). Because it is difficult to detect the alignment deviation by directly measuring the high PPI size, the AI alignment is reflected by pressing the brightness detection method, the detection is simple, and the versatility is good.
The utility model provides an counterpoint detection device and detection method, through pressing down that module 40 will aggravate the dislocation skew, display brightness presents the change of great degree, gather display panel's luminance through luminance collection module 50, through the size of contrast luminance change degree, judge the counterpoint condition between display panel's various membrane base plate and the array substrate, through data acquisition's quantitative contrast, can provide the more accurate testing result than monitoring edge cross mark alignment condition, reduce the condition of lou examining, improve the product percent of pass.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the invention, which fall within the scope of the invention as claimed.
Claims (10)
1. The utility model provides a display panel counterpoint detection tool which characterized in that includes:
the display device comprises a base, a display panel and a control unit, wherein the base is provided with an installation area for fixing the display panel;
the lighting module is electrically connected with the display panel and is used for lighting the display panel;
an operation table arranged on the base, a pressing module and a brightness acquisition module arranged on the operation table,
the pressing module is used for pressing the display panel along a first direction, and the first direction is perpendicular to the direction of the display panel;
the brightness acquisition module is used for acquiring brightness information of the display panel.
2. The apparatus of claim 1, wherein the brightness acquisition module comprises an optical probe aligned with a central region of the display panel.
3. The apparatus of claim 1, wherein the number of the pressing modules is at least one, and one group of the pressing modules comprises two pressing mechanisms symmetrically disposed on two sides of the brightness acquisition module.
4. The display panel alignment detection tool of claim 3, wherein the pressing mechanism comprises a pressing plate, a pressing post and a balance post,
one end of the pressing column is fixed with the pressing plate, and the other end of the pressing column penetrates through the mounting hole in the operating platform and extends to the mounting area;
one end of the balance column is fixed with the pressing plate, and the other end of the balance column is installed in an interactive mode with the operating platform.
5. The display panel alignment detection tool of claim 4, wherein the pressing mechanism further comprises at least one return spring and at least one adjustable limiting rod disposed between the pressing plate and the operating platform, wherein,
one end of the return spring is in contact with the pressing plate, and the other end of the return spring is in contact with the operating table;
the adjustable limiting rod is used for limiting the pressing distance of the pressing mechanism to the display panel.
6. The display panel alignment detection jig according to claim 5, wherein the number of the return springs is at least two, and the two return springs are sleeved on the pressing column or the balance column.
7. The display panel alignment detection jig according to claim 5, wherein one end of the adjustable limiting rod is fixed on the operating table, and an adjustable gap is provided between the other end of the adjustable limiting rod and the pressing plate; alternatively, the first and second electrodes may be,
one end of the adjustable limiting rod is fixed on the pressing plate, and an adjustable gap is formed between the other end of the adjustable limiting rod and the operating platform.
8. The jig for alignment detection of a display panel according to claim 7, wherein the pressing column is located at an edge of the display panel, and a flexible pressing block is disposed at an end of the pressing column contacting the display panel.
9. The display panel alignment detection tool of claim 1, wherein the console is movably mounted to the base via a positioning mechanism, the positioning mechanism is configured to limit the console from moving in a second direction relative to the console, and the second moving direction is parallel to the display panel.
10. A display panel alignment detection method, which is characterized by using the display panel alignment detection jig of any one of claims 1 to 9, the method comprising:
lighting up the display panel;
pressing a first side of the display panel along a first direction, and collecting first brightness information of a central area of the display panel;
pressing a second side of the display panel along a first direction, and collecting second brightness information of a central area of the display panel;
acquiring brightness fluctuation information through the first brightness information and the second brightness information;
and judging the alignment condition of the array substrate and the color film substrate on the display panel based on the brightness fluctuation information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230115.6A CN113934028B (en) | 2021-10-21 | 2021-10-21 | Alignment detection jig and alignment detection method for display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230115.6A CN113934028B (en) | 2021-10-21 | 2021-10-21 | Alignment detection jig and alignment detection method for display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113934028A true CN113934028A (en) | 2022-01-14 |
| CN113934028B CN113934028B (en) | 2023-11-03 |
Family
ID=79283616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111230115.6A Active CN113934028B (en) | 2021-10-21 | 2021-10-21 | Alignment detection jig and alignment detection method for display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113934028B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11122628A (en) * | 1997-10-20 | 1999-04-30 | Harness Syst Tech Res Ltd | Liquid crystal display device |
| CN109739029A (en) * | 2018-11-27 | 2019-05-10 | 深圳市华星光电技术有限公司 | Lighting test device and lighting test method |
| CN111060291A (en) * | 2019-12-27 | 2020-04-24 | 武汉天马微电子有限公司 | Alignment method, brightness determination method and brightness determination device |
| CN111221170A (en) * | 2018-11-23 | 2020-06-02 | 咸阳彩虹光电科技有限公司 | Liquid crystal display panel and liquid crystal display |
| CN111947887A (en) * | 2020-08-13 | 2020-11-17 | 昆山国显光电有限公司 | Display module testing method and system |
| CN112083589A (en) * | 2020-09-17 | 2020-12-15 | 界首泰谷工业设计有限公司 | Full-lamination aligning device and full-lamination method for display screen module |
| CN112580597A (en) * | 2020-12-29 | 2021-03-30 | 深圳贝特莱电子科技股份有限公司 | Device and method for automatically adjusting fingerprint image brightness |
-
2021
- 2021-10-21 CN CN202111230115.6A patent/CN113934028B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11122628A (en) * | 1997-10-20 | 1999-04-30 | Harness Syst Tech Res Ltd | Liquid crystal display device |
| CN111221170A (en) * | 2018-11-23 | 2020-06-02 | 咸阳彩虹光电科技有限公司 | Liquid crystal display panel and liquid crystal display |
| CN109739029A (en) * | 2018-11-27 | 2019-05-10 | 深圳市华星光电技术有限公司 | Lighting test device and lighting test method |
| CN111060291A (en) * | 2019-12-27 | 2020-04-24 | 武汉天马微电子有限公司 | Alignment method, brightness determination method and brightness determination device |
| CN111947887A (en) * | 2020-08-13 | 2020-11-17 | 昆山国显光电有限公司 | Display module testing method and system |
| CN112083589A (en) * | 2020-09-17 | 2020-12-15 | 界首泰谷工业设计有限公司 | Full-lamination aligning device and full-lamination method for display screen module |
| CN112580597A (en) * | 2020-12-29 | 2021-03-30 | 深圳贝特莱电子科技股份有限公司 | Device and method for automatically adjusting fingerprint image brightness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113934028B (en) | 2023-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109738783B (en) | PCB testing device and testing method | |
| CN207688816U (en) | A kind of thickness detection apparatus of soft-package battery | |
| TWI390223B (en) | Movable probe unit mechanism and electric inspecting apparatus | |
| CN105334449A (en) | High-precision automatic alignment ICT (In Circuit Tester) | |
| CN109830198B (en) | Impedance detection device | |
| CN203416570U (en) | Alignment assembly machine | |
| CN110595739A (en) | Automatic crimping mechanism | |
| CN113934028A (en) | Display panel alignment detection jig and alignment detection method | |
| CN107731142B (en) | Component for lighting test | |
| CN109901312A (en) | A kind of display panel cell sections of detection device | |
| CN104090180A (en) | Device for detecting pins of liquid crystal display panel automatically | |
| CN208399848U (en) | A kind of verifying attachment | |
| CN215893512U (en) | High accuracy PCB section size detection device | |
| CN110632095A (en) | PCB automatic check out system based on 5G uses | |
| CN210037150U (en) | Alignment system of display module | |
| CN209820997U (en) | Automatic high-efficient type shore durometer calibrating installation | |
| CN112362021B (en) | Automobile air conditioner compressor eccentric pin verticality and height detection device | |
| CN211207005U (en) | Universal lighting fixture | |
| CN210089626U (en) | Automatic checking machine for assembly clearance of TV back plate | |
| CN218884935U (en) | Product flatness height measuring device | |
| CN2814452Y (en) | Electric measuring clamp capable of measuring light transmissility of liquid crystal module | |
| CN218099857U (en) | Detection platform | |
| CN219996345U (en) | Color analyzer | |
| CN215524536U (en) | Flatness detection equipment | |
| CN219065555U (en) | False pressure test fixture of touch-sensitive screen sensor function piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |