CN108986721A - A kind of test pattern generation method for display panel detection - Google Patents
A kind of test pattern generation method for display panel detection Download PDFInfo
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- CN108986721A CN108986721A CN201810615682.5A CN201810615682A CN108986721A CN 108986721 A CN108986721 A CN 108986721A CN 201810615682 A CN201810615682 A CN 201810615682A CN 108986721 A CN108986721 A CN 108986721A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
- G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20021—Dividing image into blocks, subimages or windows
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20112—Image segmentation details
- G06T2207/20164—Salient point detection; Corner detection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30121—CRT, LCD or plasma display
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Quality & Reliability (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of test pattern generation methods for display panel detection, comprising steps of (1) takes the block that size is x*y in the figure that resolution ratio is A*B；(2) block of above-mentioned x*y size is divided into the fritter that multiple sizes are M*N；(3) the obtained fritter of multiple M*N will be divided using the first color, the second color both different color alternating fills；(4) taking size at the center of the fritter of each M*N size is K1*K2Block；It (5) is K in each size1*K2Block fill third color；It (6) is K in each size1*K2Block in take a pixel, fill the 4th color, form test pattern；The detection demand of abnormity screen can be preferably adapted to come detection panel with method provided by the invention detection image generated；It is more abundant for the point and color of subsequent detection judgement and due to increasing smaller detection zone and block central area pixel on the basis of gridiron pattern image angle point, it can further improve positional accuracy for panel detection.
Description
Technical field
The invention belongs to display panel detection technique fields, more particularly, to a kind of inspection for display panel detection
Survey image generation method.
Background technique
Because of differences such as material, production technologies, there are bad defects, such as Mura after display panel production.Defects of display panel
The demand that can not meet production with human eye detection needs to carry out capture analysis by third party device such as CCD camera etc..Capture point
First step of analysis is positioning, and positioning refers to determining display panel display area and each sub-pix of confirmation on CCD
(subpix) specific location in CCD, in order to obtain the characteristic that each subpix is presented on CCD, in position fixing process
It needs by means of test pattern.
The test pattern that most of equipment vendors use at this stage is mostly gridiron pattern sample test pattern illustrated in Figure 1.For example
Chinese patent CN201410328879 also discloses a kind of arbitrary order gridiron pattern screen component generation method based on FPGA, uses
The gridiron pattern screen component of arbitrary order can be generated in this method.But due to being positioned using gridiron pattern picture as test pattern
It is mainly based upon angle point (point that round is marked in Fig. 1 is known as angle point) detection, utilizes the part of chessboard table images inner corners point
Gray feature and the structure feature being made of grid realize the identification and positioning of angle point；It is this by Corner Detection come to LCD,
The shortcomings that panels such as LED, OLED are detected is confirmation ROI (i.e. detection zone of the display panel on CCD that can only be general
Domain), detection accuracy is lower.And during actual panel detection, sub-pix of the locating and displaying panel on CCD is needed, chessboard
The test pattern of lattice sample is not able to satisfy the other positioning requirements of this sub-pixel.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of inspections for display panel detection
Image generation method is surveyed, its object is to generate a kind of test pattern for meeting the other positioning requirements of sub-pixel, so that CCD takes
It accurately can quickly be positioned as after.
To achieve the above object, according to one aspect of the present invention, a kind of detection for display panel detection is provided
Image generation method includes the following steps:
(1) block that size is x*y is taken in the figure that resolution ratio is A*B；
(2) block of above-mentioned x*y size is divided into the fritter that multiple sizes are M*N；
(3) both different colors of the first color, the second color are used to replace the fritter for dividing obtained multiple M*N
It colors in；
(4) taking size at the center of the fritter of each M*N size is K1*K2Block；
It (5) is K in each size1*K2Block fill third color；
It (6) is K in each size1*K2Block in take a pixel T1, the 4th color is filled, test pattern is formed.
Preferably, the above-mentioned test pattern generation method for display panel detection, wherein x*y A*B.
Preferably, the above-mentioned test pattern generation method for display panel detection, wherein K1*K2For M*N/2.
Preferably, the above-mentioned test pattern generation method for display panel detection, third color and the second color phase
Together.
Preferably, the above-mentioned test pattern generation method for display panel detection, wherein selected by step (6)
Pixel is that size is K1*K2Block central point.
Preferably, the above-mentioned test pattern generation method for display panel detection, wherein its 4th color and the first face
Color is identical.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) the test pattern generation method detected provided by the present invention for display panel, detection image generated,
It is improvement on the basis of existing tessellate detection image, further divided area on the basis of gridiron pattern divides,
And it further discriminates between and colors in；When using existing chessboard trellis detection image come detection panel, need so that gridiron pattern filling is full whole
A panel；And method of the invention is used due to defining the block for taking size to be x*y in the figure that resolution ratio is A*B
Method test pattern generated provided by the invention carrys out detection panel, and then by " need to fill up entire panel ", this is not limited, can be more
Good is adapted to the special-shaped detection shielded, for example fringe screen such as iphoneX, fillet screen etc.；
(2) using existing chessboard pattern based on angle point detection can only general area of the detection panel in CCD, cannot
The angle point data detected are judged and corrected, therefore error is larger；It is single as the resolution ratio of display panel is higher and higher
A sub-pix is smaller and smaller, and the requirement to display panel detection accuracy is also higher and higher；It is given birth to using method provided by the invention
At test pattern, it is obtained into picture, extractable central point T by Display panel to be detected, by CCD shooting1With it is all
Angle point T2Position, while theoretical center point T is calculated3Position；According to T1With T3Data processing, can determine whether angle point T2Position
Correctness, while the position of distortion correction, each subpix of fine tuning on CCD is also carried out, scheme to improve liquid crystal module in CCD
Positioning accuracy in shape；Therefore, this method test pattern generated meets the other positioning requirements of sub-pixel, using the detection
Figure accurately can be positioned quickly after making CCD capture, can further improve the detection accuracy of panel detection.
Detailed description of the invention
Fig. 1 is the gridiron pattern sample test pattern schematic diagram that the prior art provides；
Fig. 2 is the flow chart of test pattern generation method provided by the invention；
Fig. 3 is the test pattern generation method detection image schematic diagram generated provided using embodiment；
Fig. 4 is another schematic diagram of the test pattern generation method detection image generated provided using embodiment；
Fig. 5 is the process signal that the method test pattern generated provided using embodiment carries out oled panel detection
Figure；
Fig. 6 is the effect signal that the method test pattern generated provided using embodiment carries out oled panel detection
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Provided by the present invention for the process of one embodiment of the test pattern generation method of display panel detection, reference
Fig. 2 specifically comprises the following steps:
Step (1): the block that size is x*y is taken in the figure that resolution ratio is A*B；
Step (2): the block of above-mentioned x*y size is divided into the fritter that multiple sizes are M*N；
Step (3): the obtained fritter of multiple M*N will be divided using the first color, the second color both different face
Color alternating fills；
Step (4): taking size at the center of the fritter of each M*N size is K1*K2Block；
Step (5): being K in each size1*K2Block fill third color；
Step (6): being K in each size1*K2Block in take a pixel T1, the 4th color is filled, is formed final
Test pattern.
It in practical applications, can be according to the characteristic of mould group to be measured to above-mentioned resolution parameter A*B, block size x*y, M*N
And K1*K2 is adapted to.
For example in an example, mould group to be measured is OLED screen, then by above-mentioned parameter value are as follows: A*B=720*2160, x*
Y=720*2160, M*N=30*60, K1*K2=15*30.
In another example, die trial group to be measured is LCD, then by above-mentioned parameter value are as follows: A*B=3840*2160, x*y
=3840*2160, M*N=60*60, K1*K2=30*30.
In practical applications, the first above-mentioned color, the second color, third color, the 4th color can be arranged such that, according to
Secondary is red, black, black, red；Or it is followed successively by green, black, black, green；Or it is followed successively by blue, black, black
Color, blue；Or it is followed successively by white, black, black, white.
It is preferred that can also set identical for the second color and third color, the first color is set as phase with the 4th color
Together.Referring to Fig. 4, there are two different colors for the practical tool of detection image generated in this way；In the test pattern, each A*B
Size is the subregion for having several sizes to be M*N in the block of x*y in the unit of size, and there are two not for alternating filling in these subregions
Same color；And these sizes are that subdivided size out is K in the subregion of M*N1*K2Fritter, in these fritters again capture element
Point；When detecting using such figure to liquid crystal display panel, LCD, oled panel, it is aobvious by panel to be detected to will test figure
Show, and image shown by panel to be detected is shot by CCD and obtains picture；The certain sub-pixes of the picture got on CCD
Brightness it is high, the brightness of certain sub-pixes is low, compares obvious, is conducive to data analysis.
It is the test pattern generation method detection image generated provided using embodiment referring to Fig. 3, Fig. 4.It will be this
Process reference Fig. 5 that detection image is detected for LCD, OLED, liquid crystal display panel, specifically comprises the following steps:
(1) detection image generated measured panel is output to by figure signal generator to show；
(2) image shown by measured panel is acquired by CCD；
(3) positioning analysis is carried out according to CCD acquired image, is accurately positioned the sub-pix in measured panel on CCD
Position.
Referring to Fig. 6, wherein "○", "+", "×", " Δ " symbol indicate respectively that each subpix is specific on CCD picture
Position；It can be seen that each subpix in liquid crystal module, which may be implemented, using this method test pattern generated exists by the figure
Accurate positioning on CCD figure.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of test pattern generation method for display panel detection, which comprises the steps of:
(1) block that size is x*y is taken in the figure that resolution ratio is A*B；
(2) block of the x*y size is divided into the fritter that multiple sizes are M*N；
(3) fritter of obtained M*N will be divided using the first color, the second color alternating fills；
(4) taking size at the center of the fritter of each M*N size is K1*K2Block；
It (5) is K in each size1*K2Block fill third color；
It (6) is K in each size1*K2Block in take a pixel, fill the 4th color, form test pattern.
2. test pattern generation method as described in claim 1, which is characterized in that the block size x*y taken in step (1) is
A*B。
3. test pattern generation method as claimed in claim 1 or 2, which is characterized in that the taken block size K of step (4)1*
K2For M*N/2.
4. test pattern generation method as claimed in claim 1 or 2, which is characterized in that the third color and the second color
It is identical.
5. test pattern generation method as claimed in claim 1 or 2, which is characterized in that selected picture in the step (6)
Vegetarian refreshments is that size is K1*K2Block central point.
6. test pattern generation method as claimed in claim 1 or 2, which is characterized in that the 4th color and the first color
It is identical.
7. test pattern generation method as claimed in claim 1 or 2, which is characterized in that first color, the second face
Color, third color, the 4th color may be provided so that
It is followed successively by red, black, black, red；
Or it is followed successively by green, black, black, green；
Or it is followed successively by blue, black, black, blue；
Or it is followed successively by white, black, black, white.
8. test pattern generation method as claimed in claim 1 or 2, which is characterized in that be the to be measured of OLED screen for type
Mould group, parameter value are preferred are as follows: A*B=720*2160, x*y=720*2160, M*N=30*60, K1*K2=15*30.
9. test pattern generation method as claimed in claim 1 or 2, which is characterized in that the die trial to be measured for being LCD for type
Group, parameter value are preferred are as follows: A*B=3840*2160, x*y=3840*2160, M*N=60*60, K1*K2=30*30.
10. a kind of such as the detection generated for display panel detection of any one of claim 1~9 test pattern generation method
Figure.
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| CN110796974A (en) * | 2019-11-01 | 2020-02-14 | 深圳同兴达科技股份有限公司 | Display screen detection method |
| CN110855898A (en) * | 2020-01-14 | 2020-02-28 | 武汉精立电子技术有限公司 | Checkerboard graph for curved screen test, image acquisition method and device |
| CN111882530A (en) * | 2020-07-15 | 2020-11-03 | 苏州佳智彩光电科技有限公司 | Sub-pixel positioning map generation method, positioning method and device |
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| CN110855898A (en) * | 2020-01-14 | 2020-02-28 | 武汉精立电子技术有限公司 | Checkerboard graph for curved screen test, image acquisition method and device |
| CN111882530A (en) * | 2020-07-15 | 2020-11-03 | 苏州佳智彩光电科技有限公司 | Sub-pixel positioning map generation method, positioning method and device |
| CN111882530B (en) * | 2020-07-15 | 2024-05-14 | 苏州佳智彩光电科技有限公司 | Sub-pixel positioning map generation method, positioning method and device |
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| CN108986721B (en) | 2021-06-04 |
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