CN115641800A - Display panel repair method, repair device, repair system, and storage medium - Google Patents
Display panel repair method, repair device, repair system, and storage medium Download PDFInfo
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Abstract
The invention discloses a repair method, a repair device, a repair system and a storage medium for a display panel, wherein the repair method is used for repairing bad sub-pixels in the display panel; the repairing method comprises the following steps: determining a target repair template based on the pixel arrangement mode of the display panel, and dividing a sub-pixel array of the display panel into a plurality of pixel units at least partially identical to the target repair template; determining the position of the bad sub-pixel in the sub-pixel array; determining target repair parameters of the bad sub-pixels according to the positions of the bad sub-pixels in the pixel units and the corresponding relation between the preset repair template and the repair parameters; and controlling the repair equipment to repair the bad sub-pixels according to the target repair parameters. The technical scheme of the embodiment of the invention can improve the repair efficiency.
Description
Technical Field
The present invention relates to the field of display panel repair technologies, and in particular, to a display panel repair method, a repair device, a repair system, and a storage medium.
Background
The display device is applied to various aspects in life, and provides great convenience for life of people.
The display device mainly plays a role in a display panel, and the display panel is composed of sub-pixels arranged in an array. To achieve color display, the display panel typically includes red, green, and blue sub-pixels. After the display panel is prepared, whether the defective sub-pixels exist can be judged through testing, and if the number of the defective sub-pixels is small, the defective sub-pixels can be repaired, so that the yield is improved, and waste is reduced. For example, for the bright point defective sub-pixel, the sub-pixel is always in the on state and cannot be normally turned off, the sub-pixel can be turned into the dark spot by means of laser cutting (i.e. always turned off), and the total number of sub-pixels of the display panel is much higher than the number of the bright point defective sub-pixels, so that the influence of the dark spot of the small number of sub-pixels on the display effect is negligible.
The repairing process of the bad sub-pixel mainly comprises the steps of searching the position of the bad sub-pixel, selecting a repairing parameter according to the brightness attribute (usually, the luminous color) of the bad sub-pixel, controlling a repairing device to repair according to the repairing parameter and the like. In the prior art, the repair efficiency is low due to large calculation amount in the steps of selecting repair parameters and the like.
Disclosure of Invention
The invention provides a display panel repairing method, a repairing device, a repairing system and a storage medium, which aim to improve repairing efficiency.
In a first aspect, the present invention provides a method for repairing a defective sub-pixel in a display panel; the repairing method comprises the following steps:
determining a target repair template based on the pixel arrangement mode of the display panel, and dividing a sub-pixel array of the display panel into a plurality of pixel units which are at least partially the same as the target repair template;
determining the position of the defective sub-pixel in the sub-pixel array;
determining target repair parameters of the bad sub-pixels according to the positions of the bad sub-pixels in the pixel units and the corresponding relation between the preset repair template and the repair parameters;
and controlling the repair equipment to repair the bad sub-pixels according to the target repair parameters.
Optionally, the target repair template comprises at least one red sub-pixel, at least one green sub-pixel and at least one blue sub-pixel.
Optionally, the arrangement of the sub-pixels in the target repair template is the same as the arrangement of the sub-pixels in the minimum pixel repeating unit of the sub-pixel array.
Optionally, determining a target repair template based on the pixel arrangement mode of the display panel, and dividing the sub-pixel array of the display panel into a plurality of pixel units at least partially identical to the target repair template, includes:
controlling a display panel to display a white picture to acquire a white picture image, and determining a pixel arrangement mode of the display panel based on the white picture image;
determining a target repairing template from a plurality of preset repairing templates according to the pixel arrangement mode;
carrying out binarization processing on the white picture image to obtain a binarized image; in the binary image, the area where each sub-pixel in the sub-pixel array is located displays white, and the rest areas display black;
and determining an initial pixel unit which is the same as the target repairing template in the binary image, and moving the target repairing template for a preset distance for multiple times by taking the position of the initial pixel unit as a starting point so as to divide the sub-pixel array into a plurality of pixel units which are the same as the target repairing template.
Optionally, determining the position of the defective sub-pixel in the sub-pixel array comprises:
controlling a display panel to display under a monochromatic picture;
determining a target pixel unit containing a bad sub-pixel;
and determining the position of the defective sub-pixel in the sub-pixel array according to the position of the defective sub-pixel in the target pixel unit and the position of the target pixel unit in the sub-pixel array.
Optionally, the preset corresponding relationship between the repair template and the repair parameter includes:
the one-to-one correspondence between the sub-pixels with different brightness attributes in the repairing template and different repairing parameters; the luminance properties of a sub-pixel include the emission color, shape and area of the sub-pixel.
Optionally, determining a target repair parameter of the bad sub-pixel according to a position of the bad sub-pixel in the pixel unit and a corresponding relationship between a preset repair template and the repair parameter, including:
determining a target sub-pixel corresponding to the bad sub-pixel in the target repairing template according to the position of the bad sub-pixel in the pixel unit;
and determining the repair parameters corresponding to the target sub-pixels as the target repair parameters of the bad sub-pixels.
Optionally, the defective sub-pixel is a bright point defective sub-pixel.
Optionally, the repair device is a laser repair device; the laser repair equipment comprises a light spot shaping module;
the repair parameters comprise laser energy density, the slit shape of the spot shaping module and the slit area; among different repair parameters, at least one of laser energy density, slit shape and slit area is different;
wherein the laser energy density is determined by the luminescent color of the defective sub-pixel; the slit shape is determined by the shape of the defective sub-pixel and the slit area is determined by the area of the defective sub-pixel.
In a second aspect, the present invention provides a repair apparatus for a display panel, comprising:
the array dividing module is used for determining a target repairing template based on the pixel arrangement mode of the display panel and dividing the sub-pixel array of the display panel into a plurality of pixel units which are at least partially the same as the target repairing template;
the position determining module is used for determining the position of the defective sub-pixel in the sub-pixel array;
the repair parameter determining module is used for determining a target repair parameter of the bad sub-pixel according to the position of the bad sub-pixel in the pixel unit and the corresponding relation between a preset repair template and the repair parameter;
and the control module is used for controlling the repair equipment to repair the bad sub-pixels according to the target repair parameters.
In a third aspect, the present invention provides a repair system for a display panel, the repair system comprising an electronic device and a repair device, the electronic device being configured to control the repair device to repair a defective sub-pixel of the display panel; the electronic device includes:
one or more processors;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the repair method according to any of the embodiments of the present invention.
In a fourth aspect, the present invention also provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements a repair method according to any of the embodiments of the present invention.
The repair method provided by the embodiment of the invention determines the target repair template based on the pixel arrangement mode of the display panel, divides the sub-pixel array of the display panel into a plurality of pixel units at least partially identical to the target repair template, determines the position of the bad sub-pixel in the sub-pixel array, determines the target repair parameter of the bad sub-pixel according to the position of the bad sub-pixel in the pixel unit and the corresponding relation between the preset repair template and the repair parameter, and finally controls the repair device to repair the bad sub-pixel according to the target repair parameter.
It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to 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 illustrating a repairing method for a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sub-pixel array in a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a target repair template corresponding to FIG. 2;
FIG. 4 is a schematic view of another target repair template corresponding to FIG. 2;
FIG. 5 is a schematic diagram of another target repair template corresponding to FIG. 2;
FIG. 6 is a schematic diagram of a sub-pixel array in another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the structure of a target repair template corresponding to FIG. 6;
FIG. 8 is a schematic diagram of a sub-pixel array in another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of the structure of a target repair template corresponding to FIG. 8;
FIG. 10 is a schematic diagram of a sub-pixel array in another display panel according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of the structure of a target repair template corresponding to FIG. 10;
FIG. 12 is a schematic diagram of a sub-pixel array in another display panel according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of the structure of a target repair template corresponding to FIG. 12;
FIG. 14 is a flowchart illustrating another exemplary method for repairing a display panel according to an embodiment of the present invention;
15-18 are partial flow diagrams of a repair method corresponding to FIG. 14;
fig. 19 is a schematic structural diagram of a repairing apparatus for a display panel according to an embodiment of the present invention;
fig. 20 is a schematic structural diagram of a repair system for a display panel according to an embodiment of the present invention;
fig. 21 is a schematic structural diagram of an electronic device in a repair system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
Taking the sub-pixel with the bad bright spot (called bright spot for short) as an example, in the related art, the repairing method of the display panel includes the following steps: presetting a repair parameter, searching the position of the bright spot, reading the color coordinate of the bright spot, calculating the luminous color of the bright spot according to the color coordinate, confirming the repair parameter according to the luminous color of the bright spot, and repairing the bright spot according to the repair parameter. In the scheme, each bright point needs to read the color coordinate of the bright point and calculate the light emitting color of the bright point according to the color coordinate, so that the repair parameters can be determined according to the light emitting color of the bright point, which results in large calculation amount and low repair efficiency.
In order to solve the above problem, embodiments of the present invention provide a method for repairing a display panel, which is used to repair a defective sub-pixel in the display panel. The repairing method comprises the steps of determining a target repairing template based on a pixel arrangement mode of a display panel, and dividing a sub-pixel array of the display panel into a plurality of pixel units which are at least partially the same as the target repairing template; determining the position of the bad sub-pixel in the sub-pixel array; determining target repair parameters of the bad sub-pixels according to the positions of the bad sub-pixels in the pixel array and the corresponding relation between a preset repair template and the repair parameters; and controlling the repair equipment to repair the bad sub-pixels according to the target repair parameters.
By adopting the scheme, the target repair parameters of the bad sub-pixels can be determined according to the positions of the bad sub-pixels in the pixel units and the corresponding relation between the preset repair template and the repair parameters, specifically, only the positions of the bad sub-pixels in the pixel array need to be determined, the target repair parameters of the bad sub-pixels can be determined according to the repair parameters corresponding to the corresponding sub-pixels in the target repair template, and the brightness attribute (such as the luminous color) of the bad sub-pixels does not need to be determined, so that the related calculation for determining the brightness attribute of the bad sub-pixels can be omitted, the calculation amount is reduced, and the repair efficiency is improved.
The above is the core idea of the present application, and based on the embodiments in the present application, a person skilled in the art can obtain all other embodiments without making creative efforts, which belong to the protection scope of the present application. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
Fig. 1 is a flowchart illustrating a repairing method for a display panel according to an embodiment of the present invention, where the repairing method is used to repair a defective sub-pixel in the display panel and can be executed by an electronic device in a repairing system. As shown in fig. 1, the repairing method includes the following steps:
s101, determining a target repair template based on a pixel arrangement mode of the display panel, and dividing a sub-pixel array of the display panel into a plurality of pixel units at least partially identical to the target repair template.
As described above, the display panel includes a plurality of sub-pixels, and the sub-pixels are arranged in an array in a certain manner to form a sub-pixel array. Specifically, the subpixel array is typically designed as follows: and carrying out translation for a plurality of times or carrying out translation, rotation/turnover and other operations for a plurality of times on the combination formed by the plurality of sub-pixels to form an initial array, further cutting the initial array according to the shape of the display area of the display panel to obtain a design drawing of the sub-pixel array of the display panel, and subsequently preparing according to the design drawing. The combination of the plurality of sub-pixels can be used as a target repair template, and according to the target repair template, the sub-pixel array can be divided into a plurality of pixel units which are at least partially the same as the target repair template.
Note that the pixel unit is identical to the target repair template, which means that the pixel unit completely overlaps with the target repair template, and the emission color, shape, area, and the like of the sub-pixels at each position are completely identical. It can be understood that, since the sub-pixel array is obtained by cutting the original array, and the original array is formed by the target repairing template through operations of translation, rotation/inversion, etc., there may be a portion of pixel units in the divided plurality of pixel units, and the pixel units are not exactly the same as the target repairing template. For example, a pixel cell may only be able to match a portion of the subpixels in the target repair template; as another example, the pixel unit may need to be rotated/flipped to be identical to the target repair template, and in this case, the pixel unit may be understood to be identical to the target repair template portion.
Specifically, a database of the repair template may be established based on a currently common pixel arrangement manner of the display panel, such as standard RGB arrangement, pen Tile arrangement, pen die arrangement, delta arrangement, and the like, and this will be described as an example. Therefore, in an actual production test, after a certain display panel is determined to be in a pixel arrangement mode, a corresponding repair template, namely a target repair template, can be selected from the database, and the sub-pixel array can be divided into a plurality of pixel units at least partially identical to the target repair template according to the target repair template.
Further, the repair template includes a plurality of sub-pixels, and a corresponding repair parameter, that is, a correspondence between the repair template and the repair parameter, may be preset for each sub-pixel and stored in the database.
And S102, determining the position of the defective sub-pixel in the sub-pixel array.
By determining the position of the defective sub-pixel in the sub-pixel array, the repair device can be controlled to repair the defective sub-pixel at the position conveniently during repair. One skilled in the art can use any software algorithm known in the art to determine the position of the defective sub-pixel in the sub-pixel array, which is not limited in this embodiment.
Optionally, the defective sub-pixel is a bright-spot defective sub-pixel, that is, a sub-pixel which is always in a lit state and cannot be normally turned off.
S103, determining target repair parameters of the bad sub-pixels according to the positions of the bad sub-pixels in the pixel units and the corresponding relation between the preset repair template and the repair parameters.
The repair parameters are working parameters of the repair device when repairing the defective sub-pixel. When the defective sub-pixel is a bright point defective sub-pixel, the repair device may be a laser repair device, and the repair parameters may include parameters such as laser energy density. The spectral absorption and the luminescent material of the sub-pixels with different luminescent colors are different, so that the laser energy density required for repairing the sub-pixels with different luminescent colors is different, and when the corresponding relation between the repairing template and the repairing parameter is preset, the corresponding relation between each sub-pixel and the laser energy density can be preset aiming at the different sub-pixels in the repairing template.
Specifically, because the pixel unit is at least partially identical to the target repair template, when the position of the defective sub-pixel in the pixel unit is determined, the sub-pixel corresponding to the defective sub-pixel can be determined in the target repair template, so that the repair parameter corresponding to the sub-pixel corresponding to the defective sub-pixel in the target repair template can be determined based on the preset corresponding relationship between the repair template and the repair parameter, and the repair parameter is determined as the target repair parameter of the defective sub-pixel. According to the scheme, the brightness attribute of the bad sub-pixel is not required to be determined, so that the related calculation for determining the brightness attribute of the bad sub-pixel can be omitted, the calculation amount is reduced, and the repair efficiency is improved. For example, compared with the prior art, by adopting the scheme, the color coordinates of the bad sub-pixels do not need to be read, and the light-emitting colors of the bad sub-pixels are calculated according to the color coordinates, so that the calculation amount can be reduced, and the repair efficiency can be improved.
And S104, controlling the repair equipment to repair the bad sub-pixels according to the target repair parameters.
It is understood that the sub-pixel mainly includes a light emitting element and a pixel circuit for driving the light emitting element to emit light. When the defective sub-pixel is a bright point defective sub-pixel, the laser repair device can disconnect the electrical connection relationship between the light emitting element and the pixel circuit by emitting laser, so that the bright point defective sub-pixel becomes a dark point, and the repair is completed.
To sum up, in the repairing method provided by the embodiment of the present invention, the target repairing template is determined based on the pixel arrangement manner of the display panel, the sub-pixel array of the display panel is divided into a plurality of pixel units at least partially identical to the target repairing template, the position of the defective sub-pixel in the sub-pixel array is determined, the target repairing parameter of the defective sub-pixel is determined according to the position of the defective sub-pixel in the pixel unit and the corresponding relationship between the preset repairing template and the repairing parameter, and finally the repairing device is controlled to repair the defective sub-pixel according to the target repairing parameter.
On the basis of the above embodiments, optionally, the target repair template includes at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub-pixel.
Specifically, each repair template in the database includes at least one red subpixel, at least one green subpixel, and at least one blue subpixel. By the arrangement, the repairing template can cover the sub-pixels with different light-emitting colors, the corresponding relation between the sub-pixels with different light-emitting colors and the repairing parameters can be preset, the corresponding sub-pixels of the bad sub-pixels with different light-emitting colors can be found in the target repairing template in the repairing process, the repairing parameters corresponding to the sub-pixels can be determined as the target repairing parameters of the bad sub-pixels, and the repairing efficiency is improved.
For example, fig. 2 is a schematic diagram of a sub-pixel array in a display panel according to an embodiment of the present invention, and as shown in fig. 2, the pixel arrangement of the display panel is referred to as Delta arrangement in the industry. Fig. 3 is a schematic structural diagram of an object repairing template corresponding to fig. 2, and as shown in fig. 3, the object repairing template comprises a red sub-pixel (shown as R in the figure, the same below), a green sub-pixel (shown as G in the figure, the same below) and a blue sub-pixel (shown as B in the figure, the same below). Referring to fig. 2 and 3, the target repair template shown in fig. 3 is translated to obtain an initial array, and then the sub-pixel array shown in fig. 2 is obtained by cutting off a part of sub-pixels on the edge, so that if the target repair template shown in fig. 3 is adopted, a part of pixel units are the same as the target repair template, and a part of pixel units are not completely the same as the target repair template, so that the calculation amount is relatively large when the sub-pixel array is divided into a plurality of pixel units according to the target repair template shown in fig. 3.
Fig. 4 is a schematic structural diagram of another target repair template corresponding to fig. 2, which includes one red sub-pixel, one green sub-pixel, and one blue sub-pixel, as shown in fig. 4. Referring to fig. 2 and 4, the target repair template shown in fig. 4 is translated and flipped to obtain an initial array, and the initial array and the sub-pixel array are arranged in the same manner (whether to cut or not can be selected according to size requirements). Therefore, if the target repair template shown in fig. 4 is used, part of the pixel units are the same as the target repair template, and part of the pixel units are different from the target repair template (the pixel units are different from the target repair template only by flipping), so that a picture rotation algorithm is required when the sub-pixel array is divided into a plurality of pixel units according to the target repair template shown in fig. 4, and the calculation amount and the calculation complexity are relatively large.
Fig. 5 is a schematic structural diagram of another target repair template corresponding to fig. 2, and as shown in fig. 5, the target repair template includes two red sub-pixels, two green sub-pixels, and two blue sub-pixels. Referring to fig. 2 and 5, the initial array can be obtained by translating the target repair template, and the arrangement of the initial array and the sub-pixel array is the same (whether to cut or not can be selected according to the size requirement). Therefore, if the target repair template shown in fig. 5 is used, all pixel units are the same as the target repair template, so that the amount of calculation is small when the sub-pixel array is divided into a plurality of pixel units according to the target repair template shown in fig. 5.
As can be seen from the above explanation related to fig. 2-5, when designing the sub-pixel array, the sub-pixel array can be obtained by using a plurality of different target repair templates (here, the "target repair template" refers to a combination formed by the above sub-pixels), and conversely, the sub-pixel array can be divided into a plurality of pixel units at least partially identical to the target repair template by using a plurality of different target repair templates. In addition, as can be seen from comparing fig. 3, fig. 4 and fig. 5, by reasonably setting the target repair template, the algorithm complexity of dividing the sub-pixel array into a plurality of pixel units can be greatly reduced, the calculation amount is reduced, and the repair efficiency is improved. As shown in fig. 5, preferably, the arrangement of the sub-pixels in the target repair template is the same as the arrangement of the sub-pixels in the minimum pixel repeating unit of the sub-pixel array, in other words, optionally, when the repair template is preset, the minimum pixel repeating unit of the sub-pixel array is used as the repair template corresponding to the sub-pixel array.
As the name implies, the minimum pixel repeating unit refers to the smallest pixel repeating unit in the sub-pixel array, and specifically, the sub-pixel array can be obtained by translating the minimum pixel repeating unit for multiple times, or by placing multiple minimum pixel repeating units side by side along at least one direction. With the arrangement, when the sub-pixel array is divided into the plurality of pixel units according to the target repair template, the sub-pixel array can be divided into the plurality of pixel units (the pixel units are the same as the minimum pixel repeating unit) which are the same as the target repair template only by translating the target repair template, so that the matching degree of the target repair template and the sub-pixels in the sub-pixel array is high, the algorithm is simple, the calculated amount is small, and the repair efficiency is remarkably improved. Moreover, each pixel unit is the same as the target repairing template, so that the subsequent determination of the sub-pixels corresponding to the bad sub-pixels in the pixel unit in the target repairing template is relatively easier, the calculation amount can be reduced, and the repairing efficiency can be improved. The following description will be given only by taking as an example that the arrangement of the sub-pixels in the target repair template is the same as the arrangement of the sub-pixels in the minimum pixel repeating unit of the sub-pixel array.
Optionally, the preset corresponding relationship between the repair template and the repair parameter includes: the one-to-one correspondence between the sub-pixels with different brightness attributes in the repairing template and different repairing parameters; the luminance properties of a sub-pixel include the emission color, shape and area of the sub-pixel.
In the prior art, repair parameters are usually determined only according to the emission color of a defective sub-pixel, and the current pixel designs are more and more diversified, the shapes and/or areas of sub-pixels with different emission colors in a sub-pixel array may be different, and sub-pixels with the same emission color may also have different shapes and/or areas, so that if the repair parameters are determined only according to the emission color of the defective sub-pixel, the repair success rate is reduced.
Specifically, in this embodiment, the repair template includes a plurality of sub-pixels, and if the light emitting colors, shapes, and areas of any two sub-pixels are the same, the luminance attributes of the two sub-pixels are the same and correspond to the same repair parameter. If at least one of the light-emitting color, the shape and the area of any two sub-pixels is different, the brightness attributes of the two sub-pixels are different, and the two sub-pixels respectively correspond to two different repair parameters.
Through the one-to-one correspondence relationship between the sub-pixels with different brightness attributes in the preset repair template and different repair parameters, during repair, only the sub-pixels corresponding to the bad sub-pixels need to be determined in the target repair template, and the corresponding repair parameters are determined as the target repair parameters of the bad sub-pixels, so that the brightness attributes of the bad sub-pixels do not need to be determined, and the calculation amount can be greatly reduced; moreover, since the luminance attribute of the sub-pixel corresponding to the defective sub-pixel in the target repair template is necessarily the same as the luminance attribute of the defective sub-pixel, the target repair parameter is necessarily related to the light emitting color, shape and area of the defective sub-pixel, so that the repair success rate can be greatly improved.
Optionally, the repair device is a laser repair device; the laser repair equipment comprises a light spot shaping module; the repair parameters comprise laser energy density, the slit shape of the spot shaping module and the slit area; among different repair parameters, at least one of laser energy density, slit shape and slit area is different; wherein the laser energy density is determined by the luminescent color of the defective sub-pixel; the slit shape is determined by the shape of the defective sub-pixel and the slit area is determined by the area of the defective sub-pixel.
As described above, when the defective sub-pixel is a bright point defective sub-pixel, the electrical connection between the light emitting element and the pixel circuit is usually cut off by laser, and the bright point defective sub-pixel is made a dark spot for the purpose of repair. Alternatively, the light emitting element is an organic light emitting diode including an anode, a cathode, and a light emitting layer between the anode and the cathode, and the connection between the organic light emitting diode and the pixel circuit may be broken by melting the cathode of the organic light emitting diode with laser.
Among the repair parameters, the laser energy density is determined by the emission color of the defective sub-pixel. Specifically, as described above, the spectral absorption and the luminescent material of the sub-pixels with different luminescent colors are different, so that the laser energy density required for repairing the sub-pixels with different luminescent colors is different, and when the corresponding relationship between the repair template and the repair parameter is preset, the corresponding relationship between each sub-pixel and the laser energy density can be preset for the sub-pixels with different luminescent colors in the repair template.
It can be understood that, the above-mentioned "laser energy density is determined by the light emitting color of the defective sub-pixel", and it is not necessary to calculate the light emitting color of each defective sub-pixel, according to the foregoing description, with the technical solution of this embodiment, it is not necessary to calculate the light emitting color of the defective sub-pixel, and it is only necessary to set the corresponding laser energy density for the sub-pixels of different light emitting colors in the repair template when the corresponding relationship between the repair template and the repair parameters is preset. Similarly, the luminance attributes such as the shape and area of the defective sub-pixel do not need to be calculated.
In this embodiment, in order to adapt to the repair of sub-pixels with different shapes and areas, a spot shaping module is additionally arranged in the laser repair device and used for adjusting the shapes and areas of laser spots. Specifically, the light spot shaping module is located between the laser emergent port of the laser and the display panel, and the light spot shaping module comprises slits of various different shapes and areas, so that the shape and the area of the laser light spot irradiated on the display panel can be adjusted through the slits of the light spot shaping module, and sub-pixels of different shapes and areas can be repaired.
Correspondingly, the repair parameters further include a slit shape and a slit area of the spot shaping module, wherein the slit shape is determined by the shape of the defective sub-pixel, and the slit area is determined by the area of the defective sub-pixel. Specifically, when the corresponding relationship between the repair template and the repair parameters is preset, the corresponding relationship between the sub-pixels and the shapes of the slits may be preset for the sub-pixels of different shapes in the repair template, and the corresponding relationship between the sub-pixels and the areas of the slits may be preset for the sub-pixels of the same shape but different areas in the repair template.
In the following, some common sub-pixel arrays and their corresponding target repair templates are listed, and the corresponding relationship between the target repair template and the repair parameters is briefly introduced.
For example, fig. 6 is a schematic diagram of a sub-pixel array in another display panel according to an embodiment of the present invention, and as shown in fig. 6, the pixel arrangement of the display panel is referred to as a standard RGB arrangement in the industry. Fig. 7 is a schematic structural diagram of the target repair template corresponding to fig. 6, and as shown in fig. 6 and 7, the arrangement of sub-pixels in the target repair template is the same as the arrangement of sub-pixels in the minimum pixel repeating unit. In fig. 7, the luminance attributes of the three sub-pixels are different, and each of the three sub-pixels corresponds to one of the repair parameters.
Fig. 8 is a schematic view of a sub-pixel array in another display panel according to an embodiment of the present invention, and as shown in fig. 8, the pixel arrangement of the display panel is referred to as a Pen Tile arrangement in the industry. Fig. 9 is a schematic structural diagram of the target repair template corresponding to fig. 8, and as shown in fig. 8 and 9, the arrangement of sub-pixels in the target repair template is the same as the arrangement of sub-pixels in the minimum pixel repeating unit. In fig. 9, the luminance attributes of the two red subpixels are the same and correspond to the same repair parameter, the luminance attributes of the four green subpixels are the same and correspond to the same repair parameter, and the luminance attributes of the two blue subpixels are the same and correspond to the same repair parameter.
Fig. 10 is a schematic view of a sub-pixel array in another display panel according to an embodiment of the present invention, and as shown in fig. 10, the pixel arrangement of the display panel is referred to as a Pen die arrangement (or diamond arrangement) in the industry. Fig. 11 is a schematic structural diagram of the target repair template corresponding to fig. 10, and as shown in fig. 10 and 11, the arrangement of sub-pixels in the target repair template is the same as the arrangement of sub-pixels in the minimum pixel repeating unit. In fig. 11, the luminance attributes of two red sub-pixels are the same, and correspond to the same repair parameter, the luminance attributes of two blue sub-pixels are the same, and correspond to the same repair parameter, and among four green sub-pixels, the luminance attributes of two green sub-pixels located at the upper left corner and the lower right corner of the blue sub-pixel are the same, and correspond to one repair parameter, the luminance attributes of two green sub-pixels located at the lower left corner and the upper right corner of the repaired blue sub-pixel are the same, and correspond to one repair parameter (the shapes of two green sub-pixels at the upper left corner and the upper right corner are different, and therefore correspond to different repair parameters).
Fig. 12 is a schematic diagram of a sub-pixel array in another display panel according to an embodiment of the present invention, and as shown in fig. 12, the pixel arrangement of the display panel is also referred to as Delta arrangement in the industry. Fig. 13 is a schematic structural diagram of the target repair template corresponding to fig. 12, and as shown in fig. 12 and 13, the arrangement of sub-pixels in the target repair template is the same as the arrangement of sub-pixels in the minimum pixel repeating unit. In fig. 13, the red sub-pixel, the green sub-pixel, and the blue sub-pixel correspond to different repair parameters, respectively.
It should be noted that, in the schematic diagram of the target repair template, the shape and the area of the sub-pixels with the same color are often only shown as an example, and the setting manner is not limited thereto.
On the basis of the foregoing embodiment, the following takes as an example that the arrangement manner of the sub-pixels in the target repair template is the same as the arrangement manner of the sub-pixels in the sub-pixel array, and further details are provided for the repair method provided by the embodiment of the present invention. Fig. 14 is a schematic flowchart of another repair method for a display panel according to an embodiment of the present invention, and as shown in fig. 14, the repair method includes the following steps:
s201, controlling the display panel to display a white picture to acquire a white picture image, and determining a pixel arrangement mode of the display panel based on the white picture image.
In the white picture, the red sub-pixel, the green sub-pixel and the blue sub-pixel are all in a working state, so that the obtained white picture image can display a sub-pixel array in the display panel, and specifically can display the red sub-pixel, the green sub-pixel and the blue sub-pixel in the sub-pixel array, and therefore the pixel arrangement mode of the display panel can be determined based on the white picture image.
S202, determining a target repairing template from a plurality of preset repairing templates according to the pixel arrangement mode.
As described above, when the repair template is preset, the arrangement of the sub-pixels in the repair template is preferably the same as the arrangement of the sub-pixels in the minimum pixel repeating unit of the sub-pixel array. Thus, after the pixel arrangement mode of the display panel is determined, the target repair template which is the same as the minimum pixel repeating unit can be determined from the preset multiple repair templates.
Illustratively, taking the example of repairing the display panel with the sub-pixel array shown in fig. 10 as an example, fig. 10 shows a white picture image acquired by the display panel under a white picture, where in fig. 10, the symbol R represents a red sub-pixel, the symbol G represents a green sub-pixel, and the symbol B represents a blue sub-pixel. According to the sub-pixel array shown in fig. 10, the pixel arrangement of the display panel can be determined, so that the same target repair template as the minimum pixel repeating unit can be found in a plurality of preset repair templates (as shown in fig. 11).
S203, carrying out binarization processing on the white picture image to obtain a binarized image; in the binary image, the area where each sub-pixel in the sub-pixel array is located displays white, and the rest areas display black.
According to the scheme, the luminance attributes such as the luminous color of the sub-pixels do not need to be determined, and the white picture image is binarized to obtain the binary image, so that the color of each sub-pixel can be removed. Therefore, when the sub-pixel array is divided into a plurality of pixel units according to the target repairing template, the sub-pixels in the target repairing template are matched with the sub-pixels in the sub-pixel array conveniently, the matching speed is further increased, the speed of dividing the pixel units is improved, and the repairing efficiency is further improved.
Fig. 15-18 are partial flow charts of the repairing method corresponding to fig. 14, as shown in fig. 15, a binarized image is obtained after a white picture image is binarized, in the binarized image, the area where each sub-pixel in the sub-pixel array is located displays white, and the rest areas display black. For convenience of illustration, the remaining regions except for the sub-pixels in fig. 15 are not filled with black, and in fig. 15, the regions where the respective sub-pixels are located are shown as white by removing the color of the sub-pixels (i.e., removing the R/G/B marks).
S204, determining an initial pixel unit which is the same as the target repairing template in the binary image, and moving the target repairing template for a plurality of times by a preset distance by taking the position of the initial pixel unit as a starting point so as to divide the sub-pixel array into a plurality of pixel units which are the same as the target repairing template.
It can be understood that the initial pixel unit is a pixel unit determined after the target repair template is matched with the sub-pixels in the sub-pixel array for the first time, and the sub-pixels in the initial pixel unit correspond to the sub-pixels in the target repair template one to one. After the initial pixel unit is determined, the initial pixel unit is taken as a starting point, the target repair template is moved for a preset distance for multiple times, the next pixel unit matched with the target repair template is searched for, and the sub-pixel array can be divided into a plurality of pixel units identical to the target repair template until the sub-pixels in the whole sub-pixel array are traversed. And the preset distance is less than or equal to the length of the target repairing template along the moving direction.
Illustratively, fig. 16 shows a process of dividing a sub-pixel array according to a target repair template. As shown in fig. 16, after the initial pixel unit 01-1 is determined, the target repair template is moved rightward by a preset distance using the initial pixel unit 01-1 as a starting point, the target repair template is matched with the sub-pixels in the sub-pixel array, i.e., a second pixel unit 01-2 is determined, and the target repair template is moved multiple times, i.e., the sub-pixel array is divided into a plurality of pixel units 01 (as shown in fig. 17) identical to the target repair template.
And S205, controlling the display panel to display under a monochromatic picture.
The monochrome picture refers to a red picture, a green picture, a blue picture, and the like. Specifically, the bright dot defective sub-pixel needs to be detected in a monochrome picture. The reason is that in the red frame, only the red sub-pixel needs to be controlled to emit light, in the blue frame, only the blue sub-pixel needs to be controlled to emit light, and in the green frame, only the green sub-pixel needs to be controlled to emit light. Therefore, if a sub-pixel of another color emits light in a single color screen, the sub-pixel is determined as a bright-point defective sub-pixel. After the sub-pixel with the bright spot defect is determined, the position and the repair parameters of the sub-pixel are determined to repair the sub-pixel. In this embodiment, the position of the defective sub-pixel may be determined according to the following S206-S207, and the repair parameter of the defective sub-pixel may be determined according to the following S208-S209.
S206, determining the target pixel unit containing the defective sub-pixel.
Since the sub-pixel array of the display panel is divided into a plurality of pixel units, after the defective sub-pixels are detected, it is possible to determine which pixel units contain the defective sub-pixels and determine the pixel units as target pixel units.
For example, fig. 18 shows a display image in a green screen (normally, only a green sub-pixel should be lit), and as can be seen from fig. 18, a second pixel unit in the second row contains a blue bright point 03, so that the pixel unit can be determined as a target pixel unit.
And S207, determining the position of the defective sub-pixel in the sub-pixel array according to the position of the defective sub-pixel in the target pixel unit and the position of the target pixel unit in the sub-pixel array.
The prior art generally utilizes an algorithm to directly determine the position of each defective sub-pixel in the sub-pixel array, but this method is relatively computationally expensive. In this embodiment, since the size of the target repair template is limited, the algorithm for determining the position of the defective sub-pixel in the target pixel unit is relatively simpler, and the positions of the pixel units in the sub-pixel array are determined, so that the position of the defective sub-pixel in the sub-pixel array is determined according to the position of the defective sub-pixel in the target pixel unit and the position of the target pixel unit in the sub-pixel array.
And S208, determining a target sub-pixel corresponding to the defective sub-pixel in the target repairing template according to the position of the defective sub-pixel in the pixel unit.
Specifically, no matter what kind of target repair template is adopted, because the pixel unit is at least partially identical to the target repair template, each sub-pixel in the pixel unit can certainly find the corresponding target sub-pixel in the target repair template, the difference is only that different target repair templates are adopted, the algorithm complexity is different when the target sub-pixel corresponding to the bad sub-pixel is determined, and if the pixel unit containing the bad sub-pixel is not completely identical to the target repair template, the algorithm for determining the target sub-pixel according to the position of the bad sub-pixel in the pixel unit is more complicated; if the pixel unit containing the defective sub-pixel is the same as the target repair template, the algorithm for determining the target sub-pixel according to the position of the defective sub-pixel in the pixel unit is simple, and the description may specifically refer to fig. 3 to 5.
In this embodiment, since each pixel unit is the same as the target repair template, the position of the target sub-pixel in the target repair template is the same as the position of the defective sub-pixel in the pixel unit, and therefore, the target sub-pixel can be determined as the target sub-pixel only by finding the sub-pixel with the same position as the defective sub-pixel in the target repair template, the algorithm is simpler, and the improvement of the repair efficiency is facilitated.
And S209, determining the repair parameters corresponding to the target sub-pixels as the target repair parameters of the bad sub-pixels.
As described above, the luminance attribute of the defective sub-pixel is completely consistent with the luminance attribute of the target sub-pixel, so that the preset repair parameter of the target sub-pixel can be determined as the target repair parameter of the defective sub-pixel, the luminance attribute of the defective sub-pixel does not need to be determined, the amount of related calculation is reduced, and the repair efficiency is improved. The correspondence between the luminance attribute and the repair parameter is not described in detail herein.
S210, controlling the repair equipment to repair the bad sub-pixels according to the target repair parameters.
Based on the same inventive concept, an embodiment of the present invention further provides a repair apparatus for a display panel, fig. 19 is a schematic structural diagram of the repair apparatus for a display panel provided in the embodiment of the present invention, as shown in fig. 19, the repair apparatus includes an array partitioning module 301, a position determining module 302, a repair parameter determining module 303, and a control module 304, where the array partitioning module 301 is configured to determine a target repair template based on a pixel arrangement manner of the display panel, and partition a sub-pixel array of the display panel into a plurality of pixel units at least partially identical to the target repair template; the position determining module 302 is used for determining the position of the defective sub-pixel in the sub-pixel array; the repair parameter determining module 303 is configured to determine a target repair parameter of the defective sub-pixel according to a position of the defective sub-pixel in the pixel unit and a corresponding relationship between a preset repair template and the repair parameter; the control module 304 is configured to control the repair device 402 to repair the defective sub-pixel according to the target repair parameter.
The repair device provided by the embodiment of the invention can execute the repair method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Optionally, the target repair template comprises at least one red sub-pixel, at least one green sub-pixel and at least one blue sub-pixel.
Optionally, the arrangement of the sub-pixels in the target repair template is the same as the arrangement of the sub-pixels in the minimum pixel repeating unit of the sub-pixel array.
The optional array partitioning module 301 is specifically configured to control the display panel to display a white picture to obtain a white picture image, and determine a pixel arrangement manner of the display panel based on the white picture image; determining a target repairing template from a plurality of preset repairing templates according to the pixel arrangement mode; carrying out binarization processing on the white picture image to obtain a binarized image; in the binary image, the area where each sub-pixel in the sub-pixel array is located displays white, and the rest areas display black; and determining an initial pixel unit which is the same as the target repairing template in the binary image, and moving the target repairing template for a preset distance for multiple times by taking the position of the initial pixel unit as a starting point so as to divide the sub-pixel array into a plurality of pixel units which are the same as the target repairing template.
Optionally, the position determining module 302 is specifically configured to control the display panel to display under a monochrome screen; determining a target pixel unit containing a bad sub-pixel; and determining the position of the defective sub-pixel in the sub-pixel array according to the position of the defective sub-pixel in the target pixel unit and the position of the target pixel unit in the sub-pixel array.
Optionally, the repair parameter determining module 303 is specifically configured to determine, according to the position of the defective sub-pixel in the pixel unit, a target sub-pixel corresponding to the defective sub-pixel in the target repair template; and determining the repair parameters corresponding to the target sub-pixels as the target repair parameters of the bad sub-pixels.
Optionally, the preset corresponding relationship between the repair template and the repair parameter includes: the one-to-one correspondence between the sub-pixels with different brightness attributes in the repairing template and different repairing parameters; the luminance properties of a sub-pixel include the emission color, shape and area of the sub-pixel.
Optionally, the defective sub-pixel is a bright point defective sub-pixel. The repair equipment is laser repair equipment; the laser repair equipment comprises a light spot shaping module; the repair parameters comprise laser energy density, the slit shape of the spot shaping module and the slit area; among different repair parameters, at least one of laser energy density, slit shape and slit area is different; wherein the laser energy density is determined by the luminescent color of the defective sub-pixel; the slit shape is determined by the shape of the defective sub-pixel and the slit area is determined by the area of the defective sub-pixel.
Based on the same inventive concept, the embodiment of the invention also provides a repair system of the display panel. Fig. 20 is a schematic structural diagram of a repair system for a display panel according to an embodiment of the present invention, and as shown in fig. 20, the repair system 400 includes an electronic device 401 and a repair device 402, where the electronic device 401 is configured to control the repair device 402 to repair a defective sub-pixel of the display panel. Fig. 21 is a schematic structural diagram of an electronic device in a repair system according to an embodiment of the present invention, where, as shown in fig. 21, the electronic device 401 includes a processor 4011, a memory 4012, an input device 4013, and an output device 4014; the number of the processors 4011 may be one or more, and fig. 21 exemplifies one processor 4011; the processor 4011, the memory 4012, the input device 4013, and the output device 4014 in the electronic apparatus 401 may be connected by a bus or other means, and fig. 21 illustrates an example of connection by a bus.
The memory 4012 is a computer-readable storage medium, and can be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the repairing method in the embodiment of the present invention (for example, the array partitioning module 301, the position determining module 302, the repairing parameter determining module 303, and the control module 304 in the repairing apparatus). The processor 4011 executes various functional applications and data processing of the terminal by running software programs, instructions and modules stored in the memory 4012, that is, implements the above-described repair method. In addition, the memory 4012 can be used to store a plurality of preset repair templates and the corresponding relationship between the repair templates and the repair parameters.
The input device 4013 is used for receiving input numeric or character information and generating signal input related to user setting and function control, among others. The output device 4014 may include a display device such as a display screen.
As shown in fig. 20, optionally, the repair apparatus 402 includes a spot shaping module 4021, and the spot shaping module 4021 is used to adjust the shape and area of the laser spot. Specifically, as shown in fig. 20, the spot shaping module 4021 is located between the laser exit of the laser 4022 and the display panel, and the spot shaping module 4021 may include slits of various shapes and areas, so that laser (as shown by the oblique line with an arrow in fig. 20) may adjust the shape and area of the laser spot irradiated onto the display panel through the slit of the spot shaping module 4021, thereby repairing sub-pixels of various shapes and areas and improving the success rate of repair.
Based on the same inventive concept, embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the repairing method provided in any of the above embodiments. A computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
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 (12)
1. A repair method of a display panel is used for repairing a bad sub-pixel in the display panel; the repairing method is characterized by comprising the following steps:
determining a target repair template based on a pixel arrangement mode of a display panel, and dividing a sub-pixel array of the display panel into a plurality of pixel units which are at least partially the same as the target repair template;
determining a location of the defective sub-pixel in the array of sub-pixels;
determining a target repair parameter of the bad sub-pixel according to the position of the bad sub-pixel in the pixel unit and a corresponding relation between a preset repair template and the repair parameter;
and controlling a repair device to repair the bad sub-pixels according to the target repair parameters.
2. The repair method of claim 1, wherein the target repair template comprises at least one red subpixel, at least one green subpixel, and at least one blue subpixel.
3. The repair method of claim 2, wherein the subpixels in the target repair template are arranged in the same manner as the subpixels in the minimum pixel repeat unit of the subpixel array.
4. The repairing method according to claim 3, wherein determining a target repairing template based on a pixel arrangement of a display panel and dividing a sub-pixel array of the display panel into a plurality of pixel units at least partially identical to the target repairing template comprises:
controlling a display panel to display a white picture to acquire a white picture image, and determining a pixel arrangement mode of the display panel based on the white picture image;
determining the target repairing template from a plurality of preset repairing templates according to the pixel arrangement mode;
carrying out binarization processing on the white picture image to obtain a binarized image; in the binary image, the area where each sub-pixel in the sub-pixel array is located is white, and the rest areas are black;
and determining an initial pixel unit which is the same as the target repairing template in the binary image, and moving the target repairing template for a plurality of times by a preset distance by taking the position of the initial pixel unit as a starting point so as to divide the sub-pixel array into a plurality of pixel units which are the same as the target repairing template.
5. The method of repairing of claim 1, wherein determining the location of the defective subpixel in the array of subpixels comprises:
controlling a display panel to display under a monochromatic picture; determining a target pixel unit containing the bad sub-pixel;
and determining the position of the bad sub-pixel in the sub-pixel array according to the position of the bad sub-pixel in the target pixel unit and the position of the target pixel unit in the sub-pixel array.
6. The repairing method according to claim 1, wherein the correspondence between the preset repairing template and the repairing parameter comprises:
the one-to-one correspondence between the sub-pixels with different brightness attributes in the repair template and the different repair parameters; the luminance properties of the sub-pixel include the emission color, shape and area of the sub-pixel.
7. The method according to claim 6, wherein determining the target repair parameter of the defective sub-pixel according to the position of the defective sub-pixel in the pixel unit and the corresponding relationship between a preset repair template and the repair parameter comprises:
determining a target sub-pixel corresponding to the bad sub-pixel in the target repairing template according to the position of the bad sub-pixel in the pixel unit;
and determining the repair parameters corresponding to the target sub-pixels as the target repair parameters of the bad sub-pixels.
8. The repair method of claim 1 wherein the defective sub-pixel is a bright spot defective sub-pixel.
9. The repair method according to claim 8, wherein the repair apparatus is a laser repair apparatus; the laser repair equipment comprises a light spot shaping module;
the repair parameters comprise laser energy density, the slit shape of the spot shaping module and the slit area; among the different repair parameters, at least one of the laser fluence, the slit shape, and the slit area is different;
wherein the laser energy density is determined by the emission color of the defective sub-pixel; the slit shape is determined by the shape of the defective sub-pixel, and the slit area is determined by the area of the defective sub-pixel.
10. A repair device for a display panel, comprising:
the array dividing module is used for determining a target repairing template based on the pixel arrangement mode of the display panel and dividing the sub-pixel array of the display panel into a plurality of pixel units which are at least partially the same as the target repairing template;
a position determination module for determining the position of a defective sub-pixel in the sub-pixel array;
a repair parameter determining module, configured to determine a target repair parameter of the defective sub-pixel according to a position of the defective sub-pixel in the pixel unit and a corresponding relationship between a preset repair template and the repair parameter;
and the control module is used for controlling the repair equipment to repair the bad sub-pixels according to the target repair parameters.
11. The repairing system of the display panel is characterized by comprising an electronic device and a repairing device, wherein the electronic device is used for controlling the repairing device to repair the bad sub-pixels of the display panel; the electronic device includes:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a repair method as claimed in any one of claims 1 to 9.
12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of repairing as claimed in any one of claims 1 to 9.
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| CN112086048A (en) * | 2020-08-31 | 2020-12-15 | 苏州迈为科技股份有限公司 | OLED screen bright spot repairing method and device |
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| JPH05340905A (en) * | 1992-06-08 | 1993-12-24 | Idemitsu Kosan Co Ltd | Inspecting method of continuity point of liquid crystal display element, restoring method of continuity point and inspecting-restoring equipment of continuity point |
| CN106847154A (en) * | 2017-02-15 | 2017-06-13 | 京东方科技集团股份有限公司 | Method, device and display device for compensating the bad display panel of display |
| CN109767711A (en) * | 2019-03-14 | 2019-05-17 | 京东方科技集团股份有限公司 | Fault detection method, device, system and the storage medium of display panel |
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