CN112130355B - Method for acquiring defective liquid crystal display module - Google Patents
Method for acquiring defective liquid crystal display module Download PDFInfo
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- CN112130355B CN112130355B CN202010996787.7A CN202010996787A CN112130355B CN 112130355 B CN112130355 B CN 112130355B CN 202010996787 A CN202010996787 A CN 202010996787A CN 112130355 B CN112130355 B CN 112130355B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The invention discloses a method for acquiring a defective liquid crystal display module, which comprises the following steps: determining the number and the positions of the cells of the defects in an EXCEL table according to the defect characteristics of the defect picture of the liquid crystal module, and finding out a defect reference center; setting the value of the defect reference center as a first gray value, setting the numerical values of a plurality of circles of unit cells at the periphery of the defect reference center as a second gray value, and repeating the steps until the numerical value of the Nth gray value is consistent with the background color gray value of the defect picture of the liquid crystal module; and filling numerical values in cells except the defective cell in the EXCEL table into the Nth gray value to generate a defective EXCEL table, and importing the defective EXCEL table into picture processing software to generate a defective picture. The method can quickly generate the defect picture, has simple and quick operation process for acquiring the defect picture, greatly reduces the difficulty of acquiring and copying the defect picture, and improves the acquisition efficiency of the defect picture.
Description
Technical Field
The present invention relates to liquid crystal display modules, and more particularly, to a method for obtaining a defective liquid crystal display module.
Background
The liquid crystal display module is used as a light-emitting display device, and due to the deviation of the production process, various display defects (such as white spots on a grey screen, yellow spots on a white screen and the like) can be caused, the defects can be serious, medium, slight and the like, and in the normal use process, a defective product to a certain degree cannot be noticed by a user, so that the defective product can be assembled into a whole machine for sale to the user. However, since such defects cannot be measured by corresponding objective indexes, only subjective judgment can be performed, in order to perform relatively objective judgment, a limit sample is usually prepared, the defective product to be judged is compared with the limit sample, the defective product with the severity exceeding the limit sample is judged as NG, the defective product with the severity lighter than the limit sample is judged as Pass, and whether the defective product can be assembled into a complete machine for sale is judged by the method.
In the prior art, the obtaining way of the limit sample is generally to collect similar defective products in the production process of the product, compare the defective products with each other, thereby distinguishing the grades of severity, moderate and slight, and define one grade as the limit sample, wherein the obtaining way of the limit sample causes that the limit sample is not easy to be copied, and the obtaining and copying difficulty of the limit sample is large due to the difference of different degrees in the copying process; on the other hand, in the prior art, the gray value in the single-color picture bitmap can be set through the picture defect of the liquid crystal module, so that the defect picture bitmap is generated.
Accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a method for acquiring a defective liquid crystal display module, and solves the problems that in the prior art, limit samples of the defective liquid crystal display module are difficult to acquire and copy, and the acquisition process is complex to operate.
The technical scheme of the invention is as follows: a method for obtaining a defective liquid crystal display module comprises the following steps:
s1: according to the resolution of the liquid crystal module with the screen defect, setting the Y-axis value of the resolution as the row number value of the EXCEL table and setting the X-axis value of the resolution as the column number value of the EXCEL table in the EXCEL table.
S2: determining the number and the positions of the cells with the defects in the EXCEL table in the step S1 according to the defect characteristics of the defect picture of the liquid crystal module, and finding out the reference center of the defects in the determined cells with the defects;
the defect reference center includes a number of cells.
S3: setting corresponding numerical values in the cells of the defects determined in the step S2, and setting the value of the reference center of the defects as a first gray value; on the basis of the first gray value, increasing the first gray value by a plurality of levels to form a second gray value, and setting the numerical values of a plurality of circles of unit cells at the periphery of the reference center of the defect as the second gray value; and on the basis of the second gray value, increasing the second gray value by a plurality of levels to form a third gray value, and setting the numerical values in a plurality of circles of unit cells filling the periphery of the unit cell corresponding to the second gray value as the third gray value.
S4: and repeating the step S3 until the numerical value of the Nth gray value is consistent with the gray value of the background color of the defect picture of the liquid crystal module, and setting the numerical values in all the cells filled with the periphery of the cell corresponding to the (N-1) th gray value as the Nth gray value.
S5: in step S4, the defect EXCEL table is generated by filling the N-th gradation value in each of the cells other than the cell of the defect specified in the EXCEL table with the numerical value in the cell other than the cell of the defect in step S4.
S6: and importing the defect EXCEL table in the step S5 into picture processing software, wherein the picture processing software identifies numerical values in the cell table in the defect EXCEL table, converts the numerical values in the cell table in the defect EXCEL table into gray values in the picture processing software, and generates a defect picture.
And one cell in the defect EXCEL table corresponds to one pixel point in the image processing software.
S7: and displaying the defect picture on a normal display screen, comparing the defect picture with a defect picture of the liquid crystal module, judging whether the defect picture meets the requirement, and if so, taking the defect picture as a limit sample.
Further, the step S7 further includes the steps of:
s70: and displaying the defect picture on a normal display screen, comparing the defect picture with a defect picture of the liquid crystal module, and judging whether the defect picture meets the requirements.
S71: and if the defect picture does not meet the requirement, adjusting the numerical value in the defect EXCEL table, and repeating the steps S3-S6 until the defect picture meets the requirement.
S72: and if the defect picture meets the requirements, taking the defect picture as a limit sample.
From the steps S70 to S72, after the defect picture is obtained, it is further tested whether the defect picture meets the requirements, if the defect picture meets the requirements, the obtained defect picture can be directly used as a limit sample, and if the defect picture does not meet the requirements, the value in the cell in the EXCEL table needs to be modified on the basis of the original defect EXCEL table, that is, the first gray value, the second gray value, the third gray value, 8230, the value of the nth gray value are adjusted to generate a new defect EXCEL table, a new defect picture is made, and further, whether the new defect picture meets the requirements is determined, and the above adjustment process is repeated until the obtained defect picture meets the requirements, so that the consistency between the defect picture and the defect picture of the liquid crystal module in the testing process can be effectively ensured, and the accuracy of the made defect picture is improved.
Further, the defect characteristic of the defect picture of the liquid crystal module in the step S2 includes: the size of the defect picture, the shape of the defect picture and the color of the defect picture.
Further, the step S3 is: setting corresponding numerical values in the cells of the defects determined in the step S2, and setting the value of the reference center of the defects as a first gray value; on the basis of the first gray value, increasing the first gray value by one level to form a second gray value, and setting the numerical values of five circles of cells at the periphery of the reference center of the defect as the second gray value; and on the basis of the second gray value, increasing the second gray value by one level to form a third gray value, and setting the numerical values in five circles of cells filling the periphery of the cell corresponding to the second gray value as the third gray value.
Further, an EXCEL table can be imported within the picture processing software, and the picture processing software can identify cells of the EXCEL table and numerical values within the cells, and convert the numerical values within the cells to grayscale values. The picture processing software has the function of directly identifying and processing data in the cells of the EXCEL table, and values of an X axis and a Y axis of the resolution of the picture processing software respectively correspond to column numerical values and row numerical values of the cells in the EXCEL table.
By adopting the scheme, the invention provides a method for acquiring a defective liquid crystal display module, which comprises the steps of setting the row numerical value and the column numerical value of an EXCEL table through the resolution of the liquid crystal module with picture defects, determining the number and the position of defective cells according to the size and the color of a defective picture of the liquid crystal module, finding out the reference center of the defect, setting a first gray value in the cell corresponding to the reference center of the defect according to the color of the defective picture of the liquid crystal module, increasing the numerical value of the first gray value by a plurality of levels to form a second gray value, setting the numerical value in a plurality of circles of cells at the periphery of the reference center of the defect as a second gray value, increasing the second gray value by a plurality of levels to form a third gray value, setting the numerical value in a plurality of circles of cells at the periphery of the cell with the second gray value as a third gray value, changing the gray value and repeating the setting process, until the numerical value of the Nth gray value is consistent with the gray value of the background color of the defect picture of the liquid crystal module, setting the numerical values of all cells at the periphery of the cell where the (N-1) th gray value is located as the Nth gray value, and setting the numerical values in all cells except the defective cell as the Nth gray value, thereby generating a defect EXCEL table, setting the numerical values in the corresponding cells as the first gray value, the second gray value, the third gray value, \\ 8230, and the Nth gray value in the setting process of the defect, using the data processing function of the EXCEL to quickly set the numerical values in the corresponding cells, so that the numerical values in the cell where the defect is located are quickly and accurately set, leading the defect EXCEL table into the picture processing software after the defect EXCEL table is generated, wherein the picture processing software can identify the numerical values in the defect EXCEL table and automatically convert the numerical values in the defect EXCEL table into the corresponding gray values, the method has the advantages that the defect picture is generated quickly, the operation process of obtaining the defect picture is simple and quick, the difficulty of obtaining and copying the defect picture is greatly reduced, and the obtaining efficiency of the defect picture is improved.
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FIG. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1, the present invention provides a method for obtaining a defective liquid crystal display module, comprising the following steps:
s1: according to the resolution 540 × 960 of the liquid crystal module with the screen defect, in the EXCEL table, the Y-axis value of the resolution is set as the row number of the EXCEL table, and the X-axis value of the resolution is set as the column number of the EXCEL table, that is, in the present embodiment, the row number and the column number of the EXCEL table are 960 and 540, respectively.
S2: according to the defect characteristics of the defect picture of the liquid crystal module, in the embodiment, the shape of the defect is square, the number and the position of the cells of the defect are determined in the EXCEL table in the step S1, in the embodiment, the cells of the defect are in the center position of the EXCEL table, the number of the cells of the defect is 1296, and the reference center of the defect is found out from the determined cells of the defect; specifically, the defect characteristics of the defect picture of the liquid crystal module include: the size of the defect picture, the shape of the defect picture and the color of the defect picture.
The defect reference center comprises 36 unit cells, and the unit cells are distributed in six rows and six columns.
S3: setting a corresponding numerical value in the cell of the defect determined in the step S2, and setting a value of the reference center of the defect as a first gray value 122; on the basis of the first gray value 122, increasing the first gray value by one level to form a second gray value 123, and setting the numerical values of three circles of cells at the periphery of the reference center of the defect as the second gray value 123; on the basis of the second gray value 123, the second gray value is increased by one step to form a third gray value 124, and the values in three circles of cells filling the periphery of the cell corresponding to the second gray value 123 are set as the third gray value 124.
S4: repeating the step S3 until the value of the nth gray scale value is consistent with the gray scale value of the background color of the defect frame of the liquid crystal module, in this embodiment, the gray scale value of the background color of the defect frame of the liquid crystal module is 127, that is, the nth gray scale value is 127, and setting the values in all the cells filling the periphery of the cell corresponding to the nth-1 gray scale value as the nth gray scale value 127.
S5: in step S4, the values in the cells other than the cell of the defect specified in the EXCEL table are filled in as the nth gradation value 127 in step S4, and the defect EXCEL table is generated.
S6: and importing the defect EXCEL table in the step S5 into picture processing software, wherein the picture processing software identifies numerical values in the cell table in the defect EXCEL table, converts the numerical values in the cell table in the defect EXCEL table into gray values in the picture processing software, and generates a defect picture.
Specifically, in this embodiment, after the defect EXCEL table is imported into the picture processing software, the number of pixel points of the generated defect picture is 540 × 960.
S7: and displaying the defect picture on a normal display screen, comparing the defect picture with a defect picture of the liquid crystal module, judging whether the defect picture meets the requirement, and if so, taking the defect picture as a limit sample.
Specifically, the step S7 in this embodiment further includes the following steps:
s70: and displaying the defect picture on a normal display screen, comparing the defect picture with a defect picture of the liquid crystal module, and judging whether the defect picture meets the requirements.
S71: and if the defect picture does not meet the requirement, adjusting the numerical value in the defect EXCEL table, and repeating the steps S3-S6 until the defect picture meets the requirement.
S72: and if the defect picture meets the requirements, taking the defect picture as a limit sample.
It can be known from steps S70 to S72 that, after the defect picture is obtained, it is further tested whether the defect picture meets the requirements, if the defect picture meets the requirements, it indicates that the obtained defect picture can be directly used as a limit sample, and if the defect picture does not meet the requirements, it is necessary to modify the values in the cells in the EXCEL table based on the original defect EXCEL table, i.e., adjust the values of the first gray value, the second gray value, the third gray value, 8230, and the nth gray value, generate a new defect EXCEL table, make a new defect picture, and further determine whether the new defect picture meets the requirements, repeat the above adjusting process until the obtained defect picture meets the requirements, which can effectively ensure the consistency between the defect picture and the defect picture of the liquid crystal module in the testing process, and improve the accuracy of the made defect picture.
Specifically, in the present embodiment, the EXCEL table can be imported into the picture processing software, and the picture processing software can identify the cells of the EXCEL table and the numerical values in the cells, and convert the numerical values in the cells into the grayscale values. The picture processing software has the function of directly identifying and processing data in the cells of the EXCEL table, and values of an X axis and a Y axis of the resolution of the picture processing software respectively correspond to column numerical values and row numerical values of the cells in the EXCEL table.
In summary, the present invention provides a method for obtaining a defective lcd module, which comprises setting the row and column values of an EXCEL table according to the resolution of the lcd module having a defect, determining the number and position of the defective cells according to the size and color of the defect, finding the reference center of the defect, setting the first gray value in the cell corresponding to the reference center of the defect according to the color of the defect, increasing the first gray value by one step to form a second gray value, setting the number in the cell surrounding the defect reference center to be a second gray value, increasing the second gray value by one step to form a third gray value, setting the number in the cell surrounding the cell having the second gray value to be a third gray value, changing the gray values and repeating the above setting process until the number of the N-th gray value is consistent with the gray value of the background color of the defect, setting the gray values in the cell surrounding the N-1 gray value to be the N-th gray value of the background color of the defect, setting the gray value in the defect table to be the second gray value, and converting the gray value into the gray value of the EXCEL table, and processing software, thereby converting the gray values of the gray values into the gray values of the cells having the first gray value in the EXCEL table, setting the first gray value, and the gray value of the defect, and processing software, and converting the gray value of the corresponding defect into the corresponding defect in the EXCEL table to generate the corresponding defect, thereby generating the corresponding defect, and processing software, the defect picture is generated quickly, the operation process of obtaining the defect picture is simple and quick, the difficulty of obtaining and copying the defect picture is greatly reduced, and the obtaining efficiency of the defect picture is improved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A method for obtaining a defective liquid crystal display module is characterized by comprising the following steps:
s1: according to the resolution of the liquid crystal module with the screen defect, setting a Y-axis value of the resolution as a row number value of an EXCEL table and setting an X-axis value of the resolution as a column number value of the EXCEL table in the EXCEL table;
s2: determining the number and the positions of the cells with the defects in the EXCEL table in the step S1 according to the defect characteristics of the defect picture of the liquid crystal module, and finding out the reference center of the defects in the determined cells with the defects;
the defect reference center comprises a plurality of unit cells;
s3: setting corresponding numerical values in the cells of the defects determined in the step S2, and setting the value of the reference center of the defects as a first gray value; on the basis of the first gray value, increasing the first gray value by a plurality of levels to form a second gray value, and setting the numerical values of a plurality of circles of unit cells at the periphery of the reference center of the defect as the second gray value; on the basis of the second gray value, increasing the second gray value by a plurality of levels to form a third gray value, and setting the numerical values in a plurality of circles of unit cells filling the periphery of the unit cell corresponding to the second gray value as the third gray value;
s4: repeating the step S3 until the numerical value of the Nth gray value is consistent with the gray value of the background color of the defect picture of the liquid crystal module, and setting the numerical values in all the cells filling the periphery of the cell corresponding to the N-1 th gray value as the Nth gray value;
s5: on the basis of the step S4, filling numerical values in other cells except the cells of the defect determined in the EXCEL table into the Nth gray value in the step S4 to generate a defect EXCEL table;
s6: importing the defect EXCEL table in the step S5 into picture processing software, identifying numerical values in unit cells in the defect EXCEL table by the picture processing software, converting the numerical values in the unit cells in the defect EXCEL table into gray values in the picture processing software, and generating a defect picture;
one cell in the defect EXCEL table corresponds to one pixel point in the image processing software;
s7: and displaying the defect picture on a normal display screen, comparing the defect picture with a defect picture of the liquid crystal module, judging whether the defect picture meets the requirement, and if so, taking the defect picture as a limit sample.
2. The method as claimed in claim 1, wherein the step S7 further comprises the steps of:
s70: displaying the defect picture on a normal display screen, comparing the defect picture with a defect picture of the liquid crystal module, and judging whether the defect picture meets the requirements or not;
s71: if the defect picture does not meet the requirement, adjusting the numerical value in the defect EXCEL table, and repeating the steps S3-S6 until the defect picture meets the requirement;
s72: and if the defect picture meets the requirements, taking the defect picture as a limit sample.
3. The method as claimed in claim 1, wherein the defect characteristic of the defective screen of the liquid crystal module in step S2 comprises: the size of the defect picture, the shape of the defect picture and the color of the defect picture.
4. The method as claimed in claim 1, wherein the step S3 is: setting corresponding numerical values in the cells of the defects determined in the step S2, and setting the value of the reference center of the defects as a first gray value; on the basis of the first gray value, increasing the first gray value by one level to form a second gray value, and setting the numerical values of five circles of cells at the periphery of the reference center of the defect as the second gray value; and on the basis of the second gray value, increasing the second gray value by one level to form a third gray value, and setting the numerical values in five circles of cells filling the periphery of the cell corresponding to the second gray value as the third gray value.
5. The method of claim 1, wherein EXCEL tables can be imported into the image processing software, and the image processing software can identify the cells of the EXCEL tables and the values in the cells, and convert the values in the cells into gray values.
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| JPH11225228A (en) * | 1998-02-06 | 1999-08-17 | Fuji Xerox Co Ltd | Image evaluation method and image evaluation device |
| US6987873B1 (en) * | 1998-07-08 | 2006-01-17 | Applied Materials, Inc. | Automatic defect classification with invariant core classes |
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