CN115909927A - Detection method and detection device for display screen - Google Patents
Detection method and detection device for display screen Download PDFInfo
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- CN115909927A CN115909927A CN202211446796.4A CN202211446796A CN115909927A CN 115909927 A CN115909927 A CN 115909927A CN 202211446796 A CN202211446796 A CN 202211446796A CN 115909927 A CN115909927 A CN 115909927A
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Abstract
The invention discloses a detection method and a detection device of a display screen, wherein the detection method comprises the following steps: controlling the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises pictures of at least two colors; controlling the display screen to display a second detection pattern, wherein the color of the picture in the second detection pattern is different from the color of all the pictures in the first detection pattern; determining whether the display screen has defects according to the first detection pattern and the second detection pattern; and if so, determining that the display screen is a fault display screen. The detection method of the display screen provided by the invention can improve the detection efficiency and the detection accuracy.
Description
Technical Field
The invention relates to the technical field of display, in particular to a detection method and a detection device of a display screen.
Background
The bright lines of the display screen during display can seriously affect the product quality of the display screen, so that the bright line detection of the display screen is necessary in the production process of the display screen.
The bright lines of the display screen can be displayed under the pictures with some colors, but cannot be displayed under the pictures with other colors, so that whether the bright lines exist in the display screen needs to be detected under the pictures with various colors respectively. At present, a method for detecting whether a bright line exists on a display screen is as follows: and controlling the display screen to respectively display the pictures with different pure colors, then respectively detecting whether bright lines exist in the pictures with different pure colors, and if bright lines exist in at least one picture with pure color, determining that the display screen is a fault display screen.
Because the display screen displays a picture for a certain period of time, when the display screen displays various pure-color pictures respectively, more display periods of time are needed, and therefore detection efficiency is low. If the number of the display frames of the display screen is reduced, the detection accuracy may be reduced, for example, the display screen may display frames with three colors of red, white, and black, and if only the bright line condition under the red frame and the white frame is detected, but the bright line condition under the black frame is not detected, the display screen displaying the bright line under the black frame may flow into the next production process, which may cause waste of manpower and material resources.
Disclosure of Invention
The invention provides a detection method of a display screen, which can improve the detection efficiency and the detection accuracy.
According to an aspect of the present invention, there is provided a detection method of a display screen, the detection method including:
controlling the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises pictures of at least two colors;
controlling the display screen to display a second detection pattern, wherein the color of the picture in the second detection pattern is different from the color of all the pictures in the first detection pattern;
determining whether the display screen has defects according to the first detection pattern and the second detection pattern;
and if so, determining that the display screen is a fault display screen.
Optionally, the shape of the display area of the display screen includes a rectangle;
the first detection pattern comprises pictures of two colors;
the pictures of the two colors comprise a first color picture and a second color picture;
one diagonal line of the display area is a boundary line of the first color picture and the second color picture.
Optionally, the first detection pattern includes at least two color pictures in both the first direction and the second direction;
the color type of the picture of the first detection pattern in a first direction is the same as the color type of the picture of the first detection pattern in a second direction, wherein the first direction and the second direction are intersected.
Optionally, the areas of the pictures with different colors in the first detection pattern are the same.
Optionally, the display screen includes electronic paper; the electronic paper includes an FPL film; the FPL film comprises a plurality of microcapsules arranged in an array;
when the microcapsule includes black charged particles, red charged particles, and white charged particles, the first detection pattern includes a black picture and a red picture at the same time;
when the microcapsule includes the black charged particles, the yellow charged particles, and the white charged particles, the first detection pattern includes both a black picture and a yellow picture.
Optionally, the second detection pattern is a pure color picture, and the color of the picture of the second detection pattern includes white.
Optionally, the controlling the display screen to display the first detection pattern specifically includes:
controlling the duration of the display screen for displaying the first detection pattern to be a first set duration;
the controlling the display screen to display the second detection pattern specifically includes:
controlling the duration of the display screen for displaying the second detection pattern to be a second set duration;
the sum of the first set time length and the second set time length is 25 s-27 s.
Optionally, the first set time length is equal to the second set time length.
Optionally, the shape of the display area of the display screen includes a rectangle;
the boundary between the pictures of two adjacent colors in the first detection pattern passes through the vertex of the diagonal of the display area.
According to another aspect of the present invention, there is provided a detection apparatus for a display screen, the detection apparatus including: the device comprises a display picture control module and a defect detection module;
the display picture control module is used for controlling the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises pictures with at least two colors;
the display picture control module is further used for controlling the display screen to display a second detection pattern, wherein the color of the picture in the second detection pattern is different from the color of all the pictures in the first detection pattern;
the defect detection module is used for determining whether the display screen has defects according to the first detection pattern and the second detection pattern, and determining that the display screen is a fault display screen when the display screen has defects.
The embodiment provides a detection method of a display screen, which controls the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises at least two pictures with different colors. Whether bright lines appear in the picture of two at least colors can be detected simultaneously through a first detection pattern, the picture of two at least colors that exist in the first detection pattern need not to be displayed separately to reduce the display duration that the display screen shows the picture of multiple colors, improve detection efficiency. After the first detection pattern is displayed, the display screen is controlled to display a second detection pattern, and the colors of the pictures in the second detection pattern are different from the colors of all the pictures in the first detection pattern, so that the bright line condition of the display screen under the pictures with various colors can be detected, and the detection accuracy is improved. Therefore, the detection method of the display screen provided by the embodiment can improve the detection efficiency and the detection accuracy.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for detecting a display screen according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first detection pattern according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a first detecting pattern according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a first detecting pattern according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of a first detecting pattern according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a detection apparatus for a display screen according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic flow chart of a detection method for a display screen according to an embodiment of the present invention, and referring to fig. 1, the detection method provided in this embodiment includes the following steps:
s110, controlling the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises pictures of at least two colors.
Specifically, the display screen may be electronic paper, a liquid crystal display screen, or an organic light emitting diode display screen. The manufacturing process of the display screen comprises an Automatic Optical Inspection (AOI) lighting step, taking electronic paper as an example, the production flow of the electronic paper is as follows: the TFT substrate is attached to an electronic ink (FPL) film → IC chip bonding → Flexible Printed Circuit (FPC) Flexible flat cable bonding → PS film attachment → AOI lighting → EC gluing → defoaming and curing → two-in-one gluing → finished product inspection. The method for detecting the display screen provided by the embodiment is mainly applied to the AOI lighting step, if the display screen is found to be faulty in the AOI lighting step, the display screen is stopped from entering the next production flow, and if the display screen is not found to be faulty in the AOI lighting step, the display screen is controlled to enter the next production flow.
The first detection patterns simultaneously comprise pictures with at least two colors, namely, the pictures with at least two colors are simultaneously displayed in the same first detection pattern, so that whether bright lines exist in the display screen is detected simultaneously by the pictures with at least two colors in the first detection patterns, the pictures with at least two colors are not required to be respectively displayed, the display time of the display screen for displaying the pictures with different colors is reduced, and the detection efficiency is improved.
And S120, controlling the display screen to display a second detection pattern, wherein the color of the picture in the second detection pattern is different from the color of all the pictures in the first detection pattern.
Specifically, the second detection pattern may be a pure color screen, for example, the second detection pattern may display a pure white screen. The second detection pattern may also include at least two pictures different in color at the same time. The colors of the pictures in the second detection pattern are different from the colors of all the pictures in the first detection pattern, so that the bright line condition of the display screen under the pictures with different colors can be detected, and the detection accuracy is improved.
And S130, determining whether the display screen has defects according to the first detection pattern and the second detection pattern.
Specifically, when the display screen respectively displays the first detection pattern and the second detection pattern, whether the display screen has a defect can be determined by manually checking whether bright lines exist in the first detection pattern and the second detection pattern. Or shooting the first detection pattern and the second detection pattern respectively to obtain a first actual display image and a second actual display image, and then carrying out image analysis on the first actual display image and the second actual display image to determine whether bright lines exist on the display screen. And if the bright line exists in the picture of at least one color of the first detection pattern and the second detection pattern, determining that the display screen has defects. And if the bright lines do not exist in the pictures with all colors in the first detection pattern and the second detection pattern, determining that the display screen has no defects.
If yes, go to S140.
And S140, determining the display screen to be a fault display screen.
Specifically, after the display screen is determined to be the fault display screen, the fault display screen is controlled not to flow into the next production flow, and the fault display screen is prevented from being continuously processed, so that raw materials and labor cost are saved. And when the display screen is determined to have no defects, controlling the display screen to enter the next production flow, and continuously processing the display screen without faults.
The embodiment provides a detection method of a display screen, which controls the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises at least two pictures with different colors. Whether bright lines appear in the picture of two at least colors can be detected simultaneously through a first detection pattern, the picture of two at least colors that exist in the first detection pattern need not to be displayed separately to reduce the display duration that the display screen shows the picture of multiple colors, improve detection efficiency. After the first detection pattern is displayed, the display screen is controlled to display a second detection pattern, and the colors of the pictures in the second detection pattern are different from the colors of all the pictures in the first detection pattern, so that the bright line condition of the display screen under the pictures with various colors can be detected, and the detection accuracy is improved. Therefore, the detection method of the display screen provided by the embodiment can improve the detection efficiency and the detection accuracy.
Alternatively, fig. 2 is a schematic structural diagram of a first detection pattern provided according to an embodiment of the present invention, and referring to fig. 2, a shape of a display area of a display screen includes a rectangle; the first detection pattern 110 includes a picture of two colors; the pictures of two colors include a first color picture 111 and a second color picture 112; one diagonal line of the display area is a boundary line of the first color picture 111 and the second color picture 112.
Specifically, the display screen comprises a TFT substrate, the TFT substrate comprises a plurality of scanning lines extending along a first direction X and a plurality of data lines extending along a second direction Y, thin film transistors are arranged at the intersections of the scanning lines and the data lines, the grid electrodes of the thin film transistors are connected with the scanning lines, the source electrodes of the thin film transistors are connected with the data lines, and the thin film transistors are used for controlling the light-emitting brightness of pixels.
The extending direction of the bright lines of the display screen may be the same as the extending direction of the scanning lines, or the extending direction of the data lines. The bright lines of the display screen in the first direction X are generally caused by short-circuit or open-circuit of the scanning lines in the TFT substrate, and the bright lines of the display screen in the second direction Y are generally caused by short-circuit or open-circuit of the data lines in the TFT substrate.
One diagonal line of the display area is a boundary line of the first color picture 111 and the second color picture 112, that is, one side of the diagonal line of the display area is the first color picture 111, and the other side of the diagonal line of the display area is the second color picture 112. In this embodiment, the first color picture 111 and the second color picture 112 in the first detection pattern 110 are respectively located at two sides of a diagonal line of the display area, so that the first detection pattern 110 includes the first color picture 111 and the second color picture 112 in both the first direction X and the second direction Y except for a boundary of the display area, and thus the first color picture 111 can detect whether bright lines exist in other areas except for two boundaries of the display area, and the second color picture 112 can detect whether bright lines exist in other areas except for two boundaries of the display area. Under the condition that the existence of the bright line on the boundary of the display area is not considered, the accuracy of detecting the bright line by the first detection pattern 110 and the first color picture 111 and the bright line by the second color picture 112 respectively displayed by the display screen are basically consistent, and thus, the detection method provided by the embodiment can further improve the accuracy of detection under the condition of improving the detection efficiency.
It should be noted that the brightness and color of the bright lines in the first detection pattern 111 and the second detection pattern 112 may be different from those in other areas, and the color and brightness of the bright lines may be different in different colors. For example, fig. 3 is a schematic structural diagram of another first detection pattern according to an embodiment of the present invention, referring to fig. 3, the first detection pattern 110 in fig. 3 includes a first bright line 113 and a second bright line 114, the first bright line 113 extends in the second direction Y, the first bright line 113 can be detected by the first color frame 111, and the first bright line 113 cannot be detected by the second color frame 114. The second bright line 114 extends in the first direction X, the second bright line 114 can be detected by the second color frame 112, and the second bright line 114 cannot be detected by the first color frame 111. The first bright line 113 and the second bright line 114 respectively appear in different color pictures, and the color and the brightness of the first bright line 113 and the second bright line 114 are different.
Alternatively, fig. 4 is a schematic structural diagram of another first detection pattern provided according to an embodiment of the present invention, and referring to fig. 4, the first detection pattern 110 includes frames of at least two colors in both the first direction X and the second direction Y; the color type of the first detecting pattern 110 on the first direction X is the same as the color type of the first detecting pattern 110 on the second direction Y, wherein the first direction X intersects with the second direction Y.
Specifically, the first detection pattern 110 shown in fig. 4 includes two color frames in both the first direction X and the second direction Y, and the color of the frame in the first direction X is the same as the color of the frame in the second direction Y. The at least two colors in the first direction X in the first detection pattern 110 may detect whether a bright line exists in any area of the display area in the first direction X, and the at least two colors in the second direction Y in the first detection pattern 110 may detect whether a bright line exists in any area of the display area in the second direction Y. In summary, the first detecting pattern 110 provided in this embodiment can improve the efficiency of detecting the bright lines, and can also improve the accuracy of detecting the bright lines.
Optionally, the areas of the pictures with different colors in the first detection pattern are the same.
Specifically, the areas of the pictures with different colors in the first detection pattern are set to be the same, so that the accuracy of detecting the bright lines can be improved, and the bright lines are prevented from appearing in the pictures with small areas and being unrecognized.
Optionally, the display screen includes electronic paper, the electronic paper includes an FPL film, and the FPL film includes a plurality of microcapsules arranged in an array; when the microcapsule includes the black charged particles, the red charged particles, and the white charged particles, the first detection pattern includes both a black screen and a red screen; when the microcapsule includes the black charged particles, the yellow charged particles, and the white charged particles, the first detection pattern includes both a black screen and a yellow screen.
Specifically, the electronic paper may display the color of the charged particles within the FPL film. When the FPL film includes the black charged particles, the red charged particles, and the white charged particles, the display screen may display a black picture, a red picture, and a white picture, and thus, setting the first detection pattern to include the black picture and the red picture at the same time may detect whether there is a bright line problem under the black picture and the red picture.
When the FPL film includes the black charged particles, the yellow charged particles, and the white charged particles, the display panel may display a black picture, a yellow picture, and a white picture, and thus, setting the first detection pattern to include the black picture and the yellow picture at the same time may detect whether the display panel has a bright line problem under the black picture and the yellow picture.
Optionally, the second detection pattern is a pure color picture and the color of the picture of the second detection pattern includes white.
Specifically, the second detection pattern is set to be a pure white picture, and whether the display screen has a bright line problem under the pure white picture can be detected. In addition, the problems of bright spots and bright spots of the display screen can be displayed under a pure white picture, so that the second detection pattern is set to be the pure white picture, the problems of the bright spots and the bright spots of the display screen can be checked, and the accuracy of detecting the fault display screen is further improved.
Optionally, controlling the display screen to display the first detection pattern specifically includes: controlling the duration of the display screen for displaying the first detection pattern to be a first set duration; controlling the display screen to display the second detection pattern specifically includes: controlling the duration of the display screen to display the second detection pattern to be a second set duration; the sum of the first set time period and the second set time period is 25s to 27s.
Specifically, when the display screen displays the first detection pattern and the second detection pattern, the first detection pattern and the second detection pattern need to be continuously displayed for a period of time, so that the phenomenon that the bright line is not displayed due to too short display time is avoided. The first set time period and the second set time period may be both 10s or more. The total time for controlling the display screen to display the first detection pattern and the second detection pattern is 25-27 s, so that the display time can be shortened, and the detection efficiency can be improved.
Optionally, the first set time period is equal to the second set time period.
Specifically, the first set time length is set to be equal to the second set time length, so that the phenomenon that the bright lines existing in the first detection pattern or the second detection pattern are not displayed due to too short display time length is avoided, and the accuracy of detecting the bright lines is further improved.
Alternatively, fig. 5 is a schematic structural diagram of another first detection pattern provided according to an embodiment of the present invention, and referring to fig. 5, a shape of a display area of a display screen includes a rectangle; the boundary of the pictures of two adjacent colors in the first detection pattern 110 passes through the vertex of the diagonal of the display area.
Specifically, when the display area is rectangular, the boundary of the pictures of two adjacent colors in the first detection pattern 110 is set to pass through the vertex of the diagonal of the display area, and the pictures of all colors in the first detection pattern 110 may be included in the first direction X except the boundary of the display area, and the pictures of all colors in the first detection pattern 110 may also be included in the second direction Y, so that the pictures of all colors in the first detection pattern 110 may detect the bright lines in the first direction X and the bright lines in the second direction Y, and the detection accuracy is improved under the condition of improving the detection efficiency.
The first detection pattern 110 shown in fig. 5 includes three color pictures at the same time, and under the condition that the bright lines exist at the boundary of the display area is not considered, the accuracy of detecting the bright lines by one first detection pattern 110 in this embodiment is substantially the same as the accuracy of detecting the bright lines by three different pure color pictures.
Fig. 6 is a schematic structural diagram of a detection apparatus for a display screen according to an embodiment of the present invention, and referring to fig. 6, the detection apparatus provided in this embodiment includes: a display screen control module 210 and a defect detection module 220; the display image control module 210 is configured to control the display screen to display a first detection pattern, where the first detection pattern simultaneously includes images of at least two colors; the display image control module 210 is further configured to control the display screen to display a second detection pattern, where colors of images in the second detection pattern are different from colors of all images in the first detection pattern; the defect detection module 220 is configured to determine whether the display screen has a defect according to the first detection pattern and the second detection pattern, and determine that the display screen is a faulty display screen when the display screen has a defect.
The detection device for the display screen provided by the embodiment of the invention and the detection method for the display screen provided by any embodiment of the invention have corresponding beneficial effects, and the technical details are not detailed in the embodiment, but the detection method for the display screen provided by any embodiment of the invention is detailed.
It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A detection method of a display screen is characterized by comprising the following steps:
controlling the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises pictures of at least two colors;
controlling the display screen to display a second detection pattern, wherein the color of the picture in the second detection pattern is different from the color of all the pictures in the first detection pattern;
determining whether the display screen has defects according to the first detection pattern and the second detection pattern;
and if so, determining that the display screen is a fault display screen.
2. The detection method according to claim 1, wherein a shape of a display area of the display screen includes a rectangle;
the first detection pattern comprises pictures of two colors;
the pictures of the two colors comprise a first color picture and a second color picture;
one diagonal line of the display area is a boundary line of the first color picture and the second color picture.
3. The detection method according to claim 1, wherein the first detection pattern includes pictures of at least two colors in both the first direction and the second direction;
the color type of the picture of the first detection pattern in a first direction is the same as the color type of the picture of the first detection pattern in a second direction, wherein the first direction and the second direction intersect.
4. The detecting method according to claim 3, wherein areas of the pictures of different colors in the first detecting pattern are the same.
5. The detection method according to claim 2, wherein the display screen comprises electronic paper; the electronic paper includes an FPL film; the FPL film comprises a plurality of microcapsules arranged in an array;
when the microcapsule includes black charged particles, red charged particles, and white charged particles, the first detection pattern includes a black picture and a red picture at the same time;
when the microcapsule includes the black charged particles, the yellow charged particles, and the white charged particles, the first detection pattern includes both a black picture and a yellow picture.
6. The detection method according to claim 5, wherein the second detection pattern is a pure color picture and a color of a picture of the second detection pattern includes white.
7. The detection method according to claim 1, wherein the controlling the display screen to display the first detection pattern specifically comprises:
controlling the duration of the display screen for displaying the first detection pattern to be a first set duration;
the controlling the display screen to display the second detection pattern specifically includes:
controlling the duration of the display screen for displaying the second detection pattern to be a second set duration;
the sum of the first set time length and the second set time length is 25 s-27 s.
8. The detection method according to claim 7, wherein the first set time period is equal to the second set time period.
9. The detection method according to claim 1, wherein a shape of a display area of the display screen includes a rectangle;
the boundary between pictures of two adjacent colors in the first detection pattern passes through the vertex of the opposite corner of the display area.
10. A detection device of a display screen is characterized by comprising: the device comprises a display picture control module and a defect detection module;
the display picture control module is used for controlling the display screen to display a first detection pattern, wherein the first detection pattern simultaneously comprises pictures with at least two colors;
the display picture control module is further used for controlling the display screen to display a second detection pattern, wherein the color of the picture in the second detection pattern is different from the color of all the pictures in the first detection pattern;
the defect detection module is used for determining whether the display screen has defects according to the first detection pattern and the second detection pattern, and determining that the display screen is a fault display screen when the display screen has defects.
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| CN202211446796.4A CN115909927A (en) | 2022-11-18 | 2022-11-18 | Detection method and detection device for display screen |
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| CN202211446796.4A CN115909927A (en) | 2022-11-18 | 2022-11-18 | Detection method and detection device for display screen |
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