CN116862905A - Method, device and equipment for detecting display panel and readable storage medium - Google Patents

Method, device and equipment for detecting display panel and readable storage medium Download PDF

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Publication number
CN116862905A
CN116862905A CN202310995024.4A CN202310995024A CN116862905A CN 116862905 A CN116862905 A CN 116862905A CN 202310995024 A CN202310995024 A CN 202310995024A CN 116862905 A CN116862905 A CN 116862905A
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China
Prior art keywords
image
detected
display area
luminance
target image
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CN202310995024.4A
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Inventor
曲毅
常星
蔺兴栋
徐浩冉
王晓伟
翁卫东
王洪亚
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Yungu Guan Technology Co Ltd
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Yungu Guan Technology Co Ltd
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Priority to CN202310995024.4A priority Critical patent/CN116862905A/en
Publication of CN116862905A publication Critical patent/CN116862905A/en
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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/20—Processor architectures; Processor configuration, e.g. pipelining
    • 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
    • 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
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Quality & Reliability (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application discloses a detection method, a detection device, detection equipment and a readable storage medium of a display panel, and relates to the technical field of display. The display area of the display panel is provided with at least a first display area and a second display area, the first display area and the second display area are respectively provided with a special-shaped edge, and the first display area and the second display area are symmetrically arranged relative to a first symmetry axis. The method comprises the following steps: acquiring a first image to be detected of a first display area and a second image to be detected of a second display area; mirror image processing is carried out on the first image to be detected based on the first symmetry axis, and a third image to be detected is obtained; comparing pixel brightness of the same position in the second image to be detected and the third image to be detected to obtain a first target image; and determining whether abnormal pixels exist in the first display area and the second display area according to the first target image. According to the embodiment of the application, the method is beneficial to reducing the parameter files and occupied space, improving the model switching speed and the parameter formula importing speed, and reducing the test time.

Description

Method, device and equipment for detecting display panel and readable storage medium
Technical Field
The present application relates to the field of display technologies, and in particular, to a method, an apparatus, a device, and a readable storage medium for detecting a display panel.
Background
Currently, in order to meet the aesthetic demands of display panels, the display area of the display panel is provided with profiled edges. The special-shaped edges of different display panels are different in size and shape.
The display panel automatic inspection technique (automatically optical inspection, AOI) requires bad recognition of all positions within the display area of the display panel, but the irregular shape of the irregular edge causes difficulty in edge recognition. The method for identifying the defects of the special-shaped edges in the related art has the problems of more parameter files, large occupied space, unfavorable model switching of the display panel, low parameter formula (recipe) importing speed and long running time. The parameter formula may include parameters of a detection method of the display panel.
Disclosure of Invention
The embodiment of the application provides a detection method, a device, equipment and a readable storage medium of a display panel, which are beneficial to reducing parameter files and occupied space, improving model switching speed and parameter formula importing speed and reducing algorithm running time.
The embodiment of the application provides a detection method of a display panel, wherein a display area of the display panel is provided with at least a first display area and a second display area, the first display area and the second display area are provided with special-shaped edges, and the first display area and the second display area are symmetrically arranged about a first symmetry axis, and the method comprises the following steps:
Acquiring a first image to be detected of a first display area and a second image to be detected of a second display area;
mirror image processing is carried out on the first image to be detected based on the first symmetry axis, and a third image to be detected is obtained;
comparing pixel brightness of the same position in the second image to be detected and the third image to be detected to obtain a first target image;
and determining whether abnormal pixels exist in the first display area and the second display area according to the first target image.
In some alternative embodiments, comparing pixel brightness at the same position in the second image to be detected and the third image to be detected to obtain a first target image includes:
performing exclusive OR operation on the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image to obtain a first target image, wherein if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is within a first preset range, the pixel brightness of the same position in the first target image is the first brightness, and if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is not within the first preset range, the pixel brightness of the same position in the first target image is the second brightness.
In some alternative embodiments, the first brightness is less than the second brightness.
In some alternative embodiments, the first luminance is equal to the black screen luminance of the display panel and the second luminance is equal to the white screen luminance of the display panel.
In some alternative embodiments, where the first target image includes the second luminance, the corresponding pixel of the second luminance in the first target image is an abnormal pixel of the display panel.
In some optional embodiments, the method for detecting a display panel further includes:
and determining the position of the abnormal pixel in the display area according to the second image to be detected, the third image to be detected and the target position of the abnormal pixel in the first target image.
In some optional embodiments, determining the location of the abnormal pixel in the display area according to the second image to be detected, the third image to be detected, and the target location of the abnormal pixel in the first target image includes:
performing AND operation on the pixel brightness of the same position in the second image to be detected and the target position to obtain a second target image, wherein if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is not in a second preset range, the pixel brightness of the same position in the second target image is third brightness, and if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is in the second preset range, the pixel brightness of the same position in the second target image is fourth brightness;
Performing AND operation on the pixel brightness of the same position in the third image to be detected and the target position to obtain a third target image, wherein if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is not in a third preset range, the pixel brightness of the same position in the third target image is fifth brightness, and if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is in the third preset range, the pixel brightness of the same position in the third target image is sixth brightness;
and determining the position of the abnormal pixel in the display area according to the second target image and the third target image.
In some alternative embodiments, the abnormal pixel is determined to be in the first display region in the case where the second target image includes a fourth luminance and the third target image does not include a sixth luminance.
In some alternative embodiments, the abnormal pixel is determined to be in the second display region in the case where the second target image does not include the fourth luminance and the third target image includes the sixth luminance.
In some alternative embodiments, where the second target image includes a fourth luminance and the third target image includes a sixth luminance, the abnormal pixels are determined in the first display region and the second display region.
In some alternative embodiments, the third luminance is less than the fourth luminance and the fifth luminance is less than the sixth luminance.
In some alternative embodiments, the first, third and fifth brightnesses are equal to the black frame brightness of the display panel, and the second, fourth and sixth brightnesses are equal to the white frame brightness of the display panel.
In some alternative embodiments, in the case where the first target image does not include the second luminance, the display panel does not have abnormal pixels.
Based on the same inventive concept, in a second aspect, an embodiment of the present application further provides a detection device for a display panel, where a display area of the display panel has at least a first display area and a second display area, each of the first display area and the second display area has a special-shaped edge, and the first display area and the second display area are symmetrically disposed about a first symmetry axis, the device includes:
the acquisition module is used for acquiring a first image to be detected of the first display area and a second image to be detected of the second display area;
the mirror image module is used for carrying out mirror image processing on the first image to be detected based on the first symmetry axis to obtain a third image to be detected;
the comparison module is used for comparing the pixel brightness of the same position in the second image to be detected and the third image to be detected to obtain a first target image;
And the first determining module is used for determining whether abnormal pixels exist in the first display area and the second display area according to the first target image.
Based on the same inventive concept, in a third aspect, an embodiment of the present application further provides a detection apparatus of a display panel, including: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements a method for detecting a display panel as in the first aspect.
Based on the same inventive concept, in a fourth aspect, the embodiments of the present application further provide a computer readable storage medium, on which computer program instructions are stored, which when executed by a processor, implement a method for detecting a display panel as in the first aspect.
According to the detection method, the detection device, the detection equipment and the readable storage medium of the display panel, the first image to be detected of the first display area and the second image to be detected of the second display area are obtained; then, mirror image processing can be carried out on the first image to be detected based on the first symmetry axis, so as to obtain a third detection image; and comparing the pixel brightness of the same position in the second image to be detected and the pixel brightness of the same position in the third image to be detected to obtain a first target image, wherein the first display area and the second display area are symmetrically arranged about a first symmetry axis, so that whether abnormal pixels exist in the first display area and the second display area or not can be determined according to the first target image. According to the embodiment of the application, on one hand, a standard image does not need to be backed up for each parameter formula, so that the reduction of parameter files and occupied space is facilitated; on the other hand, in the detection process of the display panel, standard images do not need to be loaded, so that the model switching speed and the parameter formula importing speed are improved, and the algorithm running time is shortened.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar features, and in which the figures are not to scale.
FIG. 1 is a schematic diagram showing a standard image in a detection process of a display panel in the related art;
FIG. 2 is a schematic diagram showing an image to be tested in the process of inspecting a display panel according to the related art;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a method for detecting a display panel according to an embodiment of the present application;
fig. 5 is a schematic diagram illustrating a detection method of a display panel according to an embodiment of the present application;
fig. 6 is a schematic diagram illustrating another principle of the detection method of the display panel according to the embodiment of the present application;
fig. 7 is a schematic flow chart of another method for detecting a display panel according to an embodiment of the present application;
fig. 8 is a schematic flow chart of a detection method of a display panel according to an embodiment of the present application;
fig. 9 is a schematic flow chart of a detection method of a display panel according to an embodiment of the present application;
Fig. 10 is a schematic diagram illustrating another principle of the method for detecting a display panel according to the embodiment of the present application;
fig. 11 is a schematic structural diagram of a detection device of a display panel according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a display panel detection apparatus according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the application and are not configured to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Accordingly, it is intended that the present application covers the modifications and variations of this application provided they come within the scope of the appended claims (the claims) and their equivalents. The embodiments provided by the embodiments of the present application may be combined with each other without contradiction.
Before describing the technical solution provided by the embodiments of the present application, in order to facilitate understanding of the embodiments of the present application, the present application firstly specifically describes the problems existing in the related art:
in the related art, in order to realize detection of a special-shaped edge of a display panel, a mode of importing a standard image is generally adopted, as shown in fig. 1 and 2, by comparing a standard image including the special-shaped edge with an image to be detected including the special-shaped edge, under the condition that the standard image and the image to be detected are identical, the pixels of the special-shaped edge of the display panel are determined to be normal, and under the condition that the standard image and the image to be detected are different, the pixels of the special-shaped edge of the display panel are determined to be abnormal.
Although the above manner can identify whether the pixels at the abnormal edge of the display panel are abnormal, a standard image needs to be backed up for each parameter formula, so that the parameter files and the occupied space are increased. Meanwhile, in each detection process of the display panel, standard images are required to be loaded, so that the model switching and the parameter formula importing speed are low, and the running test time (test time) of a detection algorithm is further increased.
In order to solve the above problems, embodiments of the present application provide a method, an apparatus, a device, and a readable storage medium for detecting a display panel. Embodiments of a method, apparatus, device, and readable storage medium for detecting a display panel will be described below with reference to the accompanying drawings.
Before describing a method for detecting a display panel, the display panel provided by the embodiment of the application is described.
As shown in fig. 3, fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present application. The display area AA of the display panel is provided with at least a first display area AA1 and a second display area AA2, the first display area AA1 and the second display area AA2 are provided with special-shaped edges, and the first display area AA1 and the second display area AA2 are symmetrically arranged about a first symmetry axis X.
The second display area AA2 may include a first sub-display area AA21, a second sub-display area AA22, and a third sub-display area AA23.
The first symmetry axis X may include a first sub-symmetry axis X1, a second sub-symmetry axis X2, and a third sub-symmetry axis X3.
The first display area AA1 and the first sub-display area AA21 are symmetrical about the first sub-symmetry axis X1. The first display area AA1 and the second sub-display area AA22 are symmetrical about the second sub-symmetry axis X2. The first display area AA1 and the third sub-display area AA23 are symmetrical about the third sub-symmetry axis X3.
In fig. 3, the special-shaped edge is taken as a round corner, and the second display area AA2 includes three sub-display areas AA23 as an example, but not limited thereto, the special-shaped edge may be another special-shaped edge besides the round corner, and the second display area AA2 may include one sub-display area, two sub-display areas, and so on.
Next, a method for detecting a display panel provided by an embodiment of the present application is described.
Fig. 4 is a schematic flow chart of a method for detecting a display panel according to an embodiment of the present application.
The detection method of the display panel provided by the embodiment of the application can be applied to electronic equipment or a detection device of the display panel. As shown in fig. 4, the method for detecting a display panel according to the embodiment of the present application may include S410 to S440.
S410, a first image to be detected of the first display area and a second image to be detected of the second display area are obtained.
S420, mirror image processing is carried out on the first image to be detected based on the first symmetry axis, and a third image to be detected is obtained.
S430, comparing the pixel brightness of the same position in the second image to be detected and the third image to be detected to obtain a first target image.
S440, determining whether abnormal pixels exist in the first display area and the second display area according to the first target image.
According to the detection method of the display panel, provided by the embodiment of the application, the first image to be detected of the first display area and the second image to be detected of the second display area are obtained; then, mirror image processing can be carried out on the first image to be detected based on the first symmetry axis, so as to obtain a third detection image; and comparing the pixel brightness of the same position in the second image to be detected and the pixel brightness of the same position in the third image to be detected to obtain a first target image, wherein the first display area and the second display area are symmetrically arranged about a first symmetry axis, so that whether abnormal pixels exist in the first display area and the second display area or not can be determined according to the first target image. According to the embodiment of the application, on one hand, a standard image does not need to be backed up for each parameter formula, so that the reduction of parameter files and occupied space is facilitated; on the other hand, in the detection process of the display panel, standard images do not need to be loaded, so that the model switching speed and the parameter formula importing speed are improved, and the algorithm running time is shortened.
Specific embodiments of S410 to S440 are described below.
S410 is first introduced.
In the embodiment of the application, under the condition that all the sub-pixels of the first display area and all the sub-pixels of the second display area are lightened, the detection device of the electronic equipment or the display panel can acquire the first image to be detected of the first display area and the second image to be detected of the second display area through acquisition equipment such as a camera, a video camera and the like. The detection device of the electronic equipment or the display panel stores a first to-be-detected image of the first display area and a second to-be-detected image of the second display area, and the detection device of the electronic equipment or the display panel can directly acquire the first to-be-detected image of the first display area and the second to-be-detected image of the second display area from the detection device.
In the case where the second display area includes the first sub-display area, S410 may include:
and acquiring a first image to be detected of the first display area and a first sub-image to be detected of the first sub-display area.
In case that the second display area includes the first sub display area, the second sub display area, and the third sub display area, S410 may include:
the method comprises the steps of obtaining a first image to be detected of a first display area, a first sub-image to be detected of a first sub-display area, a second sub-image to be detected of a second sub-display area and a third sub-image to be detected of a third sub-display area.
The embodiment of the present application is described by taking the first to-be-detected image, the first sub-to-be-detected image, the second sub-to-be-detected image, and the third sub-to-be-detected image in fig. 5 as examples, but the embodiment is not limited thereto, and each to-be-detected image may be other images.
Next, S420 is described.
As an example, in case that the second display area includes the first sub-display area, the third image to be detected includes the fourth sub-image to be detected, S420 may include:
and taking the first sub-symmetry axis as a mirror image axis, and carrying out mirror image processing on the first image to be detected to obtain a fourth sub-image to be detected.
In this embodiment, it may be understood that the first sub-symmetry axis is taken as a mirror axis, and the first image to be detected is subjected to horizontal mirror processing, so as to obtain a fourth sub-image to be detected.
As another example, in case the second display area includes a first sub-display area, a second sub-display area, and a third sub-display area, the third image to be detected includes a fifth sub-image to be detected and a sixth sub-image to be detected, S420 may include:
taking the first sub-symmetry axis as a mirror image axis, and carrying out mirror image processing on the first image to be detected to obtain a fourth sub-image to be detected;
taking the second sub-symmetry axis as a mirror image axis, and carrying out mirror image processing on the first image to be detected to obtain a fifth sub-image to be detected;
And taking the third sub-symmetry axis as a mirror image axis, and carrying out mirror image processing on the first image to be detected to obtain a sixth sub-image to be detected.
In this embodiment, after the mirror image processing, the fourth sub-image to be detected, the fifth sub-image to be detected, and the sixth sub-image to be detected may be as shown in fig. 5.
In this embodiment, it may be understood that the second sub-symmetry axis is taken as a mirror axis, the first image to be detected is subjected to vertical mirror image processing to obtain a fifth sub-image to be detected, and the third sub-symmetry axis is taken as a mirror axis, and the first image to be detected is subjected to diagonal mirror image processing to obtain a sixth sub-image to be detected.
S430 is then introduced.
As one example, in the case where the second display area includes a first sub-display area and the third image to be detected includes a fourth sub-image to be detected, the first target image may include the first sub-target image.
As another example, in the case where the second display area includes a first sub-display area, a second sub-display area, and a third sub-display area, the third image to be detected includes a fourth sub-image to be detected, and the fifth sub-image to be detected, and the sixth sub-image to be detected, the first target image may include a first sub-target image, a second sub-target image, and a third sub-target image.
In some alternative embodiments, as shown in fig. 7, S430 may include S431.
S431, performing exclusive OR operation on the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image to obtain a first target image, wherein if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is within a first preset range, the pixel brightness of the same position in the first target image is the first brightness, and if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is not within the first preset range, the pixel brightness of the same position in the first target image is the second brightness.
In the embodiment, the first target image can be rapidly and accurately determined by performing exclusive or operation on the pixel brightness at the same position in the second image to be detected and the third image to be detected, so that a basis is provided for determining whether abnormal pixels exist in the first display area and the second display area.
The first preset range may be set according to practical situations, for example, the first preset range may be [0,5] nit, or [ -5,5] nit, etc.
In some alternative embodiments, the first brightness may be less than the second brightness. For example, the first luminance may be 100 nits and the second luminance may be 400 nits. Since the first luminance is smaller than the second luminance, the second luminance is more noticeable than the first luminance and is more easily recognized by the detection means of the electronic device or the display panel.
In other alternative embodiments, the first brightness may also be less than the second brightness. For example, the first luminance may be 600 nits and the second luminance may be 200 nits.
In some alternative embodiments, the first luminance may be equal to the black screen luminance of the display panel, and the second luminance may be equal to the white screen luminance of the display panel. In this way, the first luminance and the second luminance can be distinguished clearly and clearly.
In other alternative embodiments, the first luminance may be equal to the white screen luminance of the display panel, and the second luminance may be equal to the black screen luminance of the display panel.
The black luminance of the display panel may be understood as the luminance corresponding to the gray level of the display panel 0, and the white luminance of the display panel may be understood as the luminance corresponding to the gray level of the display panel 255.
The first preset range may be set according to practical situations, and is not limited herein. For example, the first preset range may be [0, 10] nit, or [0, 50] nit, or the like.
Alternatively, in the case where the second display area includes the first sub-display area, the third image to be detected includes the fourth sub-image to be detected, and the first target image includes the first sub-target image, S431 may include S1.
S1, performing exclusive OR operation on pixel brightness of the same position in a first sub-to-be-detected image and a fourth sub-to-be-detected image to obtain a first sub-target image, wherein if the difference value of the pixel brightness of the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is within a first preset range, the difference value of the pixel brightness of the same position in the first sub-target image is the first brightness, and if the difference value of the pixel brightness of the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is not within the first preset range, the difference value of the pixel brightness of the same position in the first sub-target image is the second brightness.
As shown in fig. 5, if the difference value of the pixel brightness at the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is within the first preset range, the pixel brightness at the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is considered to be the same, and the pixel brightness at the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is subjected to exclusive or operation, so that the obtained pixel brightness at the position in the first sub-target image is the black screen brightness of the display panel. As shown in fig. 6, if the difference value of the pixel brightness at the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is not within the first preset range, the pixel brightness at the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is considered to be different, and the pixel brightness at the same position in the first sub-to-be-detected image and the fourth sub-to-be-detected image is subjected to exclusive or operation, so that the obtained pixel brightness at the position in the first sub-target image is the white screen brightness of the display panel.
Optionally, in the case where the second display area may further include a second sub-display area and a third sub-display area, and the third image to be detected may further include a fifth sub-image to be detected and a sixth sub-image to be detected, S431 may further include S2 and S3.
S2, carrying out exclusive OR operation on the pixel brightness of the same position in the second sub-to-be-detected image and the pixel brightness of the same position in the fifth sub-to-be-detected image to obtain a second sub-target image, wherein if the difference value of the pixel brightness of the same position in the second sub-to-be-detected image and the pixel brightness of the same position in the fifth sub-to-be-detected image is within a first preset range, the difference value of the pixel brightness of the same position in the second sub-target image is the first brightness, and if the difference value of the pixel brightness of the same position in the second sub-to-be-detected image and the pixel brightness of the same position in the fifth sub-to-be-detected image is not within the first preset range, the difference value of the pixel brightness of the same position in the second sub-target image is the second brightness.
S3, performing exclusive OR operation on the pixel brightness of the same position in the third sub-to-be-detected image and the pixel brightness of the same position in the sixth sub-to-be-detected image to obtain a third sub-target image, wherein if the difference value of the pixel brightness of the same position in the second to-be-detected image and the pixel brightness of the same position in the sixth sub-to-be-detected image is within a first preset range, the difference value of the pixel brightness of the same position in the third sub-target image is the first brightness, and if the difference value of the pixel brightness of the same position in the second to-be-detected image and the pixel brightness of the same position in the sixth sub-to-be-detected image is not within the first preset range, the difference value of the pixel brightness of the same position in the third sub-target image is the second brightness.
In S2, as shown in fig. 5, if the difference value of the pixel brightness at the same position in the second sub-to-be-detected image and the fifth sub-to-be-detected image is within the first preset range, the pixel brightness at the same position in the second sub-to-be-detected image and the fifth sub-to-be-detected image is considered to be the same, and the pixel brightness at the same position in the second sub-to-be-detected image and the fifth sub-to-be-detected image is subjected to exclusive or operation, so that the obtained pixel brightness at the position in the second sub-target image is the black screen brightness of the display panel. As shown in fig. 6, if the difference value of the pixel brightness at the same position in the second sub-to-be-detected image and the sixth sub-to-be-detected image is not within the first preset range, the pixel brightness at the same position in the second sub-to-be-detected image and the sixth sub-to-be-detected image is considered to be different, and the pixel brightness at the same position in the second sub-to-be-detected image and the sixth sub-to-be-detected image is subjected to exclusive or operation, so that the obtained pixel brightness at the position in the second sub-target image is the white screen brightness of the display panel.
In S3, as shown in fig. 5, if the difference value of the pixel brightness at the same position in the third sub-to-be-detected image and the sixth sub-to-be-detected image is within the first preset range, the pixel brightness at the same position in the third sub-to-be-detected image and the sixth sub-to-be-detected image is considered to be the same, and the pixel brightness at the same position in the third sub-to-be-detected image and the sixth sub-to-be-detected image is subjected to exclusive or operation, so that the obtained pixel brightness at the position in the third sub-target image is the black screen brightness of the display panel. As shown in fig. 6, if the difference value of the pixel brightness at the same position in the third sub-to-be-detected image and the sixth sub-to-be-detected image is not within the first preset range, the pixel brightness at the same position in the third sub-to-be-detected image and the sixth sub-to-be-detected image is considered to be different, and the pixel brightness at the same position in the third sub-to-be-detected image and the sixth sub-to-be-detected image is subjected to exclusive or operation, so that the obtained pixel brightness at the position in the third sub-target image is the white screen brightness of the display panel.
S440 is next introduced.
Optionally, in the case that the first target image includes the second luminance, a pixel corresponding to the second luminance in the first target image is an abnormal pixel of the display panel.
In this embodiment, by including the second luminance in the first target image, it is possible to quickly and accurately determine that the display panel has abnormal pixels.
The first target image includes a second brightness, which indicates that the brightness of pixels at the same position in the second to-be-detected image and the third to-be-detected image are different, that is, the lighting condition of at least one pixel in the second to-be-detected image and the third to-be-detected image is different, and at least one pixel in the first display area and/or the second display area is not lighted, that is, abnormal pixels exist in the first display area and/or the second display area.
Alternatively, in the case where the first target image does not include the second luminance, the display panel does not have abnormal pixels.
In this embodiment, by not including the second luminance in the first target image, it can be quickly and accurately determined that the display panel has no abnormal pixel.
The first target image does not include the second brightness, i.e. the first target image includes only the first brightness, which means that the lighting conditions of all pixels in the second image to be detected and the third image to be detected are the same, i.e. no abnormal pixels exist in the first display area and/or the second display area.
As one example, in the case where the first target image includes the first sub-target image, S441 may include S5.
S5, determining whether abnormal pixels exist in the first display area and the second display area according to the first sub-target image.
Correspondingly, in the case that the first sub-target image includes the second luminance, the pixel corresponding to the second luminance in the first sub-target image is an abnormal pixel of the display panel. In the case where the first sub-target image does not include the second luminance, the display panel does not have abnormal pixels.
As another example, in the case where the first target image includes a first sub-target image, a second sub-target image, and a third sub-target image, S441 may include S6.
S6, determining whether abnormal pixels exist in the first display area and the second display area according to the first sub-target image, the second sub-target image and the third sub-target image.
Correspondingly, in the case that at least one sub-target image in the first sub-target image, the second sub-target image and the third sub-target image comprises the second brightness, the pixel corresponding to the second brightness in the sub-target image is an abnormal pixel of the display panel.
Since the first sub-display area, the second sub-display area, the third sub-display area, and the first display area are all at the same position with a very low possibility of having abnormal pixels, it can be considered that the display panel has no abnormal pixels in the case where none of the first sub-target image, the second sub-target image, and the third sub-target image includes the second luminance.
In some alternative embodiments, as shown in fig. 8, in case it is determined that there are abnormal pixels in the display area of the display panel, the detection method of the display panel may further include S450.
S450, determining the position of the abnormal pixel in the display area according to the second image to be detected, the third image to be detected and the target position of the abnormal pixel in the first target image.
In the embodiment, the positions of the sub-display areas of the abnormal pixels can be accurately determined through the second image to be detected, the third image to be detected and the target positions of the abnormal pixels in the first target image.
The target position may be understood as the position of the outlier pixel in the first target image.
The location of an outlier pixel in a display region may be understood as being in which position of the outlier pixel in particular in the display region, i.e. whether the outlier pixel is in particular in the first display region or in the second display region.
In some alternative embodiments, as shown in fig. 9, S450 may include S451 to S453.
S451, performing AND operation on the pixel brightness of the same position in the second image to be detected and the target position to obtain a second target image, wherein if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is not within a second preset range, the pixel brightness of the same position in the second target image is third brightness, and if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is within the second preset range, the pixel brightness of the same position in the second target image is fourth brightness.
S452, performing AND operation on the pixel brightness of the same position in the third image to be detected and the target position to obtain a third target image, wherein if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is not in a third preset range, the pixel brightness of the same position in the third target image is fifth brightness, and if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is in the third preset range, the pixel brightness of the same position in the third target image is sixth brightness.
S453, determining the position of the abnormal pixel in the display area according to the second target image and the third target image.
In this embodiment, the second target image is obtained by performing an and operation on the pixel brightness of the same position in the second image to be detected and the target position, and the third target image is obtained by performing an and operation on the pixel brightness of the same position in the third image to be detected and the target position, so that the second target image and the third target image can be obtained quickly and accurately, and meanwhile, the position of the abnormal pixel in the display area can be determined accurately according to the second target image and the third target image.
In S451, the second preset range may be set according to the actual situation, and is not limited herein, for example, the second preset range may be [0, 30] nit, or [ -5,5] nit.
For example, if the difference between the pixel brightness of the same position in the first sub-to-be-detected image (i.e., the second to-be-detected image) and the pixel brightness of the same position in the target position is not within the second preset range, the pixel brightness of the same position in the first sub-to-be-detected image and the pixel brightness of the same position in the target position are considered to be different, and the pixel brightness of the same position in the first sub-to-be-detected image and the pixel brightness of the same position in the target position are subjected to an and operation, so that the obtained pixel brightness of the same position in the second target image is the black screen brightness of the display panel. As shown in fig. 10, if the difference between the pixel brightness of the first sub-to-be-detected image in the first sub-display area and the pixel brightness of the same position in the target position is within the second preset range, the pixel brightness of the same position in the first sub-to-be-detected image and the target position is considered to be the same, and the pixel brightness of the same position in the first sub-to-be-detected image and the target position is subjected to an and operation, so that the obtained pixel brightness of the same position in the second target image is the white screen brightness of the display panel.
In S452, the third preset range may be set according to the actual situation, and is not limited herein, for example, the third preset range may be [0, 30] nit, or [ -10, 10] nit.
For example, as shown in fig. 10, if the difference value of the pixel brightness of the same position in the third to-be-detected image and the target position is not within the second preset range, the pixel brightness of the same position in the third to-be-detected image and the target position is considered to be different, and the pixel brightness of the same position in the third to-be-detected image and the target position is subjected to an and operation, so that the obtained pixel brightness of the same position in the third target image is the black screen brightness of the display panel. If the difference value of the pixel brightness of the same position in the third image to be detected and the target position is within the second preset range, the pixel brightness of the same position in the third image to be detected and the target position is considered to be the same, and the pixel brightness of the same position in the third image to be detected and the target position is subjected to AND operation, so that the obtained pixel brightness of the same position in the third target image is the white picture brightness of the display panel.
In S453, as one example, in a case where the second target image includes the fourth luminance and the third target image does not include the sixth luminance, it is determined that the abnormal pixel is in the first display area.
As another example, in the case where the second target image does not include the fourth luminance and the sixth luminance is included in the third target image, it is determined that the abnormal pixel is in the second display area.
As yet another example, in the case where the second target image includes a fourth luminance and the third target image includes a sixth luminance, it is determined that the abnormal pixel is in the first display region and the second display region.
In the present embodiment, by determining whether the fourth luminance is included in the second target image and whether the sixth luminance is included in the third target image, the position of the abnormal pixel in the display area can be quickly and accurately determined.
The second target image includes fourth brightness, and the third target image does not include sixth brightness, which indicates that the lighting conditions of all pixels in the second image to be detected and the target position are the same, and the lighting conditions of all pixels in the third image to be detected and the target position are different, that is, abnormal pixels exist in the first display area, and abnormal pixels do not exist in the second display area. Correspondingly, when the second target image does not include the fourth brightness and the third target image includes the sixth brightness, it is indicated that the lighting conditions of all the pixels in the second to-be-detected image and the target position are different, and the lighting conditions of all the pixels in the third to-be-detected image and the target position are the same, that is, at least one pixel in the second to-be-detected image is not lighted, that is, there is no abnormal pixel in the first display area, and there is an abnormal pixel in the second display area.
Similarly, the second target image includes a fourth brightness, and the third target image includes a sixth brightness, which indicates that the lighting conditions of the second image to be detected and a part of pixels in the target position are the same, and the lighting conditions of the second image to be detected and another part of pixels in the target position are the same. That is, at least one pixel in each of the second image to be detected and the third image to be detected is unlit, i.e., abnormal pixels exist in each of the first display area and the second display area.
In some alternative embodiments, the third luminance may be less than the fourth luminance and the fifth luminance may be less than the sixth luminance. Since the third luminance is smaller than the fourth luminance and the fifth luminance is smaller than the sixth luminance, the fourth luminance is more noticeable than the third luminance and the sixth luminance is more noticeable than the fifth luminance, and the fourth luminance and the sixth luminance are more easily recognized by the detection means of the electronic device or the display panel.
At least two of the first luminance, the third luminance, and the fifth luminance may be equal, and at least two of the second luminance, the fourth luminance, and the sixth luminance may be equal. Alternatively, the first luminance, the third luminance, and the fifth luminance are all unequal, and the second luminance, the fourth luminance, and the sixth luminance are all unequal.
In some alternative embodiments, the first, third and fifth brightnesses are equal to the black frame brightness of the display panel, and the second, fourth and sixth brightnesses are equal to the white frame brightness of the display panel. In this way, it is possible to clearly and clearly distinguish between the first luminance and the second luminance, between the third luminance and the fourth luminance, and between the fifth luminance and the sixth luminance.
In other alternative embodiments, the first, third and fifth brightness are equal to the white screen brightness of the display panel, and the second, fourth and sixth brightness are equal to the black screen brightness of the display panel.
The first preset range, the second preset range, and the third preset range may be the same or different, and are not limited herein.
For example, the second display region may include a first sub-display region, the third image to be detected may include a fourth sub-image to be detected, and the second target image may include a fourth sub-target image. S452 may include S5.
S5, performing AND operation on the brightness of the pixel at the same position in the fourth sub-to-be-detected image and the target position to obtain a fourth sub-target image, wherein if the difference value of the brightness of the pixel at the same position in the fourth sub-to-be-detected image and the target position is not in a third preset range, the brightness of the pixel at the same position in the fourth sub-target image is fifth brightness, and if the difference value of the brightness of the pixel at the same position in the fourth sub-to-be-detected image and the target position is in the third preset range, the brightness of the pixel at the same position in the fourth sub-target image is sixth brightness.
In the case where the second target image includes the fourth luminance and the fourth sub-target image does not include the sixth luminance, the abnormal pixel is determined to be in the first display area. In the case where the second target image does not include the fourth luminance and the fourth sub-target image includes the sixth luminance, it is determined that the abnormal pixel is in the second display area. In the case where the second target image includes a fourth luminance and the fourth sub-target image includes a sixth luminance, the abnormal pixels are determined in the first display area and the second display area.
Further, the second display area may further include a second sub-display area and a third sub-display area, the third image to be detected may further include a fifth sub-image to be detected and a sixth sub-image to be detected, and the second target image may further include a fifth sub-target image and a sixth sub-target image. S452 may further include S6 to S7, and S453 may include S8.
S6, performing AND operation on the pixel brightness of the same position in the fifth sub-to-be-detected image and the target position to obtain a fifth sub-target image, wherein if the difference value of the pixel brightness of the same position in the fifth sub-to-be-detected image and the target position is not in a third preset range, the pixel brightness of the same position in the fifth sub-target image is the fifth brightness, and if the difference value of the pixel brightness of the same position in the fifth sub-to-be-detected image and the target position is in the third preset range, the pixel brightness of the same position in the fifth sub-target image is the sixth brightness.
And S7, performing AND operation on the pixel brightness of the same position in the sixth sub-to-be-detected image and the target position to obtain a sixth sub-target image, wherein if the difference value of the pixel brightness of the same position in the sixth sub-to-be-detected image and the target position is not in a third preset range, the pixel brightness of the same position in the sixth sub-target image is fifth brightness, and if the difference value of the pixel brightness of the same position in the sixth sub-to-be-detected image and the target position is in the third preset range, the pixel brightness of the same position in the sixth sub-target image is sixth brightness.
S8, determining the position of the abnormal pixel in the display area according to the third target image, the fourth sub-target image, the fifth sub-target image and the sixth sub-target image.
In the present embodiment, the position of the abnormal pixel in the display area is determined based on the third target image, the fourth sub-target image, the fifth sub-target image, and the sixth sub-target image, and the accuracy of determining the position of the abnormal pixel in the display area can be improved.
As one example, in the case where the third target image includes a fourth luminance, and the fourth, fifth, and sixth sub-target images each include a sixth luminance, it is determined that the abnormal pixel is in the first, second, and third sub-display areas.
As another example, in a case where the third target image includes a fourth luminance and none of the fourth, fifth, and sixth sub-target images includes a sixth luminance, it is determined that the abnormal pixel is in the first, second, and third sub-display areas.
As still another example, in the case where the third target image includes the fourth luminance, the fourth sub-target image includes the sixth luminance, and neither the fifth sub-target image nor the sixth sub-target image includes the sixth luminance, the third target image includes the fourth luminance and the fourth sub-target image includes the sixth luminance, which indicates that the lighting conditions of a part of the pixels in the third target image and the target position are the same, and the lighting conditions of another part of the pixels in the fourth sub-target image and the target position are the same, at this time, the lighting conditions of a part of the pixels in the third target image and the fourth sub-target image are different from the lighting conditions of a part of the pixels in the target position, and therefore, it is determined that the abnormal pixels are in the first display area, the first sub-display area, the second sub-display area, and the third sub-display area.
Based on the same inventive concept as the detection method of the display panel, the embodiment of the application also provides a detection device of the display panel.
Fig. 11 is a schematic structural diagram of a detection device for a display panel according to an embodiment of the present application.
The display area of the display panel provided by the embodiment of the application is provided with at least a first display area and a second display area, wherein the first display area and the second display area are respectively provided with a special-shaped edge, and the first display area and the second display area are symmetrically arranged about a first symmetry axis. As shown in fig. 11, the detection apparatus 1100 for a display panel may include an acquisition module 1110, a mirroring module 1120, a comparison module 1130, and a first determination module 1140.
An acquiring module 1110, configured to acquire a first image to be detected of the first display area and a second image to be detected of the second display area;
the mirror image module 1120 is configured to mirror the first image to be detected based on the first symmetry axis to obtain a third image to be detected;
the comparing module 1130 is configured to compare pixel brightness at the same position in the second image to be detected and the third image to be detected, so as to obtain a first target image;
the first determining module 1140 is configured to determine whether abnormal pixels exist in the first display area and the second display area according to the first target image.
According to the detection device of the display panel, provided by the embodiment of the application, the first image to be detected of the first display area and the second image to be detected of the second display area are obtained; then, mirror image processing can be carried out on the first image to be detected based on the first symmetry axis, so as to obtain a third detection image; and comparing the pixel brightness of the same position in the second image to be detected and the pixel brightness of the same position in the third image to be detected to obtain a first target image, wherein the first display area and the second display area are symmetrically arranged about a first symmetry axis, so that whether abnormal pixels exist in the first display area and the second display area or not can be determined according to the first target image. According to the embodiment of the application, on one hand, a standard image does not need to be backed up for each parameter formula, so that the reduction of parameter files and occupied space is facilitated; on the other hand, in the detection process of the display panel, standard images do not need to be loaded, so that the model switching speed and the parameter formula importing speed are improved, and the algorithm running time is shortened.
In some alternative embodiments, the comparison module 1130 may be specifically configured to:
performing exclusive OR operation on the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image to obtain a first target image, wherein if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is within a first preset range, the pixel brightness of the same position in the first target image is the first brightness, and if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is not within the first preset range, the pixel brightness of the same position in the first target image is the second brightness.
In some alternative embodiments, the first brightness is less than the second brightness.
In some alternative embodiments, the first luminance is equal to the black screen luminance of the display panel and the second luminance is equal to the white screen luminance of the display panel.
In some alternative embodiments, where the first target image includes the second luminance, the corresponding pixel of the second luminance in the first target image is an abnormal pixel of the display panel.
In some alternative embodiments, the detection device of the display panel may further include:
The second determining module is used for determining the position of the abnormal pixel in the display area according to the second image to be detected, the third image to be detected and the target position of the abnormal pixel in the first target image.
In some alternative embodiments, the second determining module may include:
the first operation submodule is used for performing AND operation on the pixel brightness of the same position in the second image to be detected and the target position to obtain a second target image, wherein if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is not in a second preset range, the pixel brightness of the same position in the second target image is third brightness, and if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is in the second preset range, the pixel brightness of the same position in the second target image is fourth brightness;
the second operation submodule is used for performing AND operation on the pixel brightness of the same position in the third image to be detected and the target position to obtain a third target image, wherein if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is not in a third preset range, the pixel brightness of the same position in the third target image is fifth brightness, and if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is in the third preset range, the pixel brightness of the same position in the third target image is sixth brightness;
And the determining submodule is used for determining the position of the abnormal pixel in the display area according to the second target image and the third target image.
In some alternative embodiments, the abnormal pixel is determined to be in the first display region in the case where the second target image includes a fourth luminance and the third target image does not include a sixth luminance.
In some alternative embodiments, the abnormal pixel is determined to be in the second display region in the case where the second target image does not include the fourth luminance and the third target image includes the sixth luminance.
In some alternative embodiments, where the second target image includes a fourth luminance and the third target image includes a sixth luminance, the abnormal pixels are determined in the first display region and the second display region.
In some alternative embodiments, the third luminance is less than the fourth luminance and the fifth luminance is less than the sixth luminance.
In some alternative embodiments, the first, third and fifth brightnesses are equal to the black frame brightness of the display panel, and the second, fourth and sixth brightnesses are equal to the white frame brightness of the display panel.
In some alternative embodiments, in the case where the first target image does not include the second luminance, the display panel does not have abnormal pixels.
The detection device for the display panel provided by the embodiment of the application can realize each process in the embodiment of the detection method for the display panel of fig. 1, and in order to avoid repetition, the description is omitted here.
Fig. 12 is a schematic hardware structure diagram of a display panel detection device according to an embodiment of the present application.
The detection device at the display panel may comprise a processor 1201 and a memory 1202 storing computer program instructions.
In particular, the processor 1201 may include a Central Processing Unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured as one or more integrated circuits that implement embodiments of the present application.
Memory 1202 may include mass storage for data or instructions. By way of example, and not limitation, memory 1202 may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or universal serial bus (Universal Serial Bus, USB) Drive, or a combination of two or more of the above. Memory 1202 may include removable or non-removable (or fixed) media where appropriate. Memory 1202 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 1202 is a non-volatile solid-state memory. In particular embodiments, memory 1202 includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate. By way of example, the memory may include non-volatile transient memory.
The processor 1201 implements the detection method of any one of the display panels of the above embodiments by reading and executing the computer program instructions stored in the memory 1202.
In one example, the display panel detection apparatus may further include a communication interface 1203 and a bus 1210. As shown in fig. 12, the processor 1201, the memory 1202, and the communication interface 1203 are connected to each other via a bus 1210 and perform communication with each other.
The communication interface 1203 is mainly used for implementing communication among the modules, devices, units and/or apparatuses in the embodiment of the present invention.
The bus 1210 includes hardware, software, or both, coupling components of the detection device of the display panel to each other. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. Bus 1210 may include one or more buses, where appropriate. Although embodiments of the invention have been described and illustrated with respect to a particular bus, the invention contemplates any suitable bus or interconnect.
The display panel detection apparatus may perform the display panel detection method in the embodiment of the present application, thereby implementing the display panel detection method and the display panel detection device described in connection with fig. 1 and 11.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, can implement the method for detecting a display panel in the above embodiment, and achieve the same technical effects, and in order to avoid repetition, the description is omitted here. The computer readable storage medium may include, but is not limited to, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disk.
The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. "computer-readable medium" may include any medium capable of storing or transmitting information. Examples of a computer readable medium include an electronic circuit, a semiconductor memory device, a ROM, a flash memory, an Erasable ROM (EROM), a floppy disk, a CD-ROM, an optical disk, a hard disk, a fiber optic medium, a radio frequency link, and so forth. The code segments may be downloaded via computer networks such as the internet, intranets, etc.
According to embodiments of the application, the computer-readable storage medium may be a non-transitory computer-readable storage medium.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.
These embodiments are not exhaustive of all details, nor are they intended to limit the application to the precise embodiments disclosed, in accordance with the application. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best utilize the application and various modifications as are suited to the particular use contemplated. The application is limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. The detection method of the display panel is characterized in that a display area of the display panel is provided with at least a first display area and a second display area, the first display area and the second display area are provided with special-shaped edges, and the first display area and the second display area are symmetrically arranged about a first symmetry axis, and the method comprises the following steps:
acquiring a first image to be detected of the first display area and a second image to be detected of the second display area;
mirror image processing is carried out on the first image to be detected based on the first symmetry axis, so that a third image to be detected is obtained;
Comparing the pixel brightness of the same position in the second image to be detected and the third image to be detected to obtain a first target image;
and determining whether abnormal pixels exist in the first display area and the second display area according to the first target image.
2. The method for detecting a display panel according to claim 1, wherein comparing pixel brightness at the same position in the second image to be detected and the third image to be detected to obtain a first target image includes:
performing exclusive or operation on the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image to obtain a first target image, wherein if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is within a first preset range, the pixel brightness of the same position in the first target image is first brightness, and if the difference value of the pixel brightness of the same position in the second to-be-detected image and the third to-be-detected image is not within the first preset range, the pixel brightness of the same position in the first target image is second brightness;
preferably, the first brightness is less than the second brightness;
Preferably, the first luminance is equal to a black screen luminance of the display panel, and the second luminance is equal to a white screen luminance of the display panel.
3. The method according to claim 2, wherein in the case where the first target image includes the second luminance, a pixel corresponding to the second luminance in the first target image is an abnormal pixel of the display panel.
4. A method of inspecting a display panel according to claim 3, further comprising:
and determining the position of the abnormal pixel in the display area according to the second image to be detected, the third image to be detected and the target position of the abnormal pixel in the first target image.
5. The method according to claim 4, wherein determining the position of the abnormal pixel in the display area according to the second image to be detected, the third image to be detected, and the target position of the abnormal pixel in the first target image includes:
performing AND operation on the pixel brightness of the same position in the second image to be detected and the target position to obtain a second target image, wherein if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is not in a second preset range, the pixel brightness of the same position in the second target image is third brightness, and if the difference value of the pixel brightness of the same position in the second image to be detected and the target position is in the second preset range, the pixel brightness of the same position in the second target image is fourth brightness;
Performing an AND operation on the pixel brightness of the same position in the third image to be detected and the target position to obtain a third target image, wherein if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is not in a third preset range, the pixel brightness of the same position in the third target image is fifth brightness, and if the difference value of the pixel brightness of the same position in the third image to be detected and the target position is in the third preset range, the pixel brightness of the same position in the third target image is sixth brightness;
determining the position of the abnormal pixel in the display area according to the second target image and the third target image;
preferably, in a case where the second target image includes the fourth luminance and the third target image does not include the sixth luminance, determining that the abnormal pixel is in the first display area;
preferably, in a case where the second target image does not include the fourth luminance and the third target image includes the sixth luminance, determining that the abnormal pixel is in the second display area;
preferably, in a case where the second target image includes the fourth luminance and the third target image includes the sixth luminance, the abnormal pixels are determined to be in the first display area and the second display area.
6. The method according to claim 2, wherein the third luminance is smaller than the fourth luminance, and the fifth luminance is smaller than the sixth luminance;
preferably, the first luminance, the third luminance, and the fifth luminance are equal to a black screen luminance of the display panel, and the second luminance, the fourth luminance, and the sixth luminance are equal to a white screen luminance of the display panel.
7. The method according to claim 2, wherein in a case where the first target image does not include the second luminance, the display panel has no abnormal pixels.
8. The utility model provides a detection device of display panel, its characterized in that, display panel's display area has first display area and second display area at least, first display area with the second display area all has special-shaped edge, first display area with the second display area sets up about first symmetry axis symmetry, the device includes:
the acquisition module is used for acquiring a first image to be detected of the first display area and a second image to be detected of the second display area;
the mirror image module is used for carrying out mirror image processing on the first image to be detected based on the first symmetry axis to obtain a third image to be detected;
The comparison module is used for comparing the pixel brightness of the same position in the second image to be detected and the third image to be detected to obtain a first target image;
and the first determining module is used for determining whether abnormal pixels exist in the first display area and the second display area according to the first target image.
9. A display panel detection apparatus, characterized in that the display panel detection apparatus includes: a processor and a memory storing computer program instructions;
the processor, when executing the computer program instructions, implements a method for detecting a display panel according to any one of claims 1-7.
10. A computer readable storage medium, wherein computer program instructions are stored on the computer readable storage medium, which when executed by a processor, implement the method of detecting a display panel according to any one of claims 1-7.
CN202310995024.4A 2023-08-08 2023-08-08 Method, device and equipment for detecting display panel and readable storage medium Pending CN116862905A (en)

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Applications Claiming Priority (1)

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CN202310995024.4A CN116862905A (en) 2023-08-08 2023-08-08 Method, device and equipment for detecting display panel and readable storage medium

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