CN110660371A - Liquid crystal module display correction method and device - Google Patents
Liquid crystal module display correction method and device Download PDFInfo
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- CN110660371A CN110660371A CN201910945966.5A CN201910945966A CN110660371A CN 110660371 A CN110660371 A CN 110660371A CN 201910945966 A CN201910945966 A CN 201910945966A CN 110660371 A CN110660371 A CN 110660371A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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Abstract
The embodiment of the invention provides a liquid crystal module display correction method and equipment, wherein the liquid crystal module comprises at least two liquid crystal layers, and the method comprises the steps of inputting a preset gray scale driving signal to each pixel in a fault area, and then determining the actual brightness of the liquid crystal module in the fault area; the failure region is located in the first liquid crystal layer; determining a compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal; loading the compensation value into a driving signal of each pixel of a correction area corresponding to the fault area so as to enable the liquid crystal module to display normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers. According to the embodiment of the invention, the display defects of the liquid crystal layer in the fault area can be compensated by adjusting the brightness of the liquid crystal layer in the non-fault area, so that the maintenance cost is reduced and the maintenance period is shortened compared with the replacement of the whole liquid crystal module.
Description
Technical Field
The embodiment of the invention relates to the technical field of liquid crystal display, in particular to a method and equipment for correcting display of a liquid crystal module.
Background
A Liquid Crystal Display (LCD) is a flat Display device having excellent features such as high definition, thin shape, light weight, and low power consumption, and is widely used in thin televisions, computer monitors, electronic billboards, and the like.
In the LCD industry, no matter what the LCD panel is an In-Plane Switching (IPS) or a Vertical Alignment liquid crystal (VA) screen, when the LCD panel has a display problem of poor line type, the line type is a hardware problem, so that the display problem cannot be compensated by backlight or software, and the LCD panel or the display module can only be replaced to solve the display problem.
However, the above solution has high maintenance cost, long maintenance period and high logistics and storage cost, which is harmful to the benefit of both the consumer and the manufacturer.
Disclosure of Invention
The embodiment of the invention provides a liquid crystal module display correction method and equipment, which are used for reducing the maintenance cost of the display problem of a liquid crystal module.
In a first aspect, an embodiment of the present invention provides a method for correcting display of a liquid crystal module, where the liquid crystal module includes at least two liquid crystal layers, and includes:
after a preset gray scale driving signal is input to each pixel in a fault area, determining the actual brightness of a liquid crystal module in the fault area; the failure region is located in the first liquid crystal layer;
determining a compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal;
loading the compensation value into a driving signal of each pixel of a correction area corresponding to the fault area so as to enable the liquid crystal module to display normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers.
In one possible design, the determining the compensation value of each pixel in the failure region according to the actual brightness and the predetermined grayscale driving signal includes:
calculating theoretical brightness of the liquid crystal module in the fault area according to the preset gray scale determining signal;
and determining a compensation value of each pixel of the fault area according to the actual brightness and the theoretical brightness.
In one possible design, the determining the compensation value of each pixel in the failure area according to the actual brightness and the theoretical brightness includes:
and calculating the ratio of the actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
In one possible design, the resolution of the first liquid crystal layer is greater than the resolution of the second liquid crystal layer, each pixel in a failure region includes an R sub-pixel, a G sub-pixel, and a B sub-pixel, and determining a compensation value for each pixel in the failure region according to the actual brightness and the theoretical brightness includes:
aiming at each pixel in the fault area, adjusting the R sub-pixel, the G sub-pixel and the B sub-pixel of the pixel to be the same brightness according to the actual brightness to obtain the updated actual brightness;
and calculating the ratio of the updated actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
In one possible design, the determining the actual brightness of the liquid crystal module in the failure region includes:
shooting a picture displayed by the liquid crystal module under the drive of the preset gray scale drive signal;
and determining the actual brightness of the liquid crystal module in the fault area according to the picture.
In one possible design, before the inputting the predetermined grayscale driving signal to each pixel in the failure region, the method further includes:
acquiring first layer information of a first liquid crystal layer where a fault area is located and first coordinate information of the fault area;
second layer information of a modified region is determined from the first layer information, and second coordinate information of the modified region is determined from the first coordinate information.
In one possible design, the obtaining first coordinate information of the fault region includes:
playing a fault positioning graphic card; the fault positioning card comprises a plurality of identification areas, and each identification area comprises a plurality of display lines;
receiving position information of a display line which is input by a user and is overlapped with a fault line in a fault area in a fault positioning graphic card;
and determining the first coordinate information according to the position information.
In a second aspect, an embodiment of the present invention provides a liquid crystal module display correction device, where the liquid crystal module includes at least two liquid crystal layers, and includes:
the first determining module is used for determining the actual brightness of the liquid crystal module in the fault area after a preset gray scale driving signal is input to each pixel in the fault area; the failure region is located in the first liquid crystal layer;
the second determining module is used for determining the compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal;
the loading module is used for loading the compensation value into the driving signal of each pixel of the correction area corresponding to the fault area so as to enable the liquid crystal module to display normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers.
In a third aspect, an embodiment of the present invention provides a liquid crystal module display correction device, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes computer-executable instructions stored by the memory to cause the at least one processor to perform the method as set forth in the first aspect above and in various possible designs of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, in which computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the method according to the first aspect and various possible designs of the first aspect are implemented.
The method for correcting the display of the liquid crystal module and the device thereof provided by the embodiment determine the actual brightness of the liquid crystal module in the fault area after inputting the preset gray scale driving signal to each pixel in the fault area, the fault area is positioned in the first liquid crystal layer, determine the compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal, and load the compensation value into the driving signal of each pixel in the correction area corresponding to the fault area so as to enable the liquid crystal module to display normally, the correction area is positioned in the second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers, so that the display defect of the liquid crystal layer in the fault area can be compensated by adjusting the brightness of the liquid crystal layer in the non-fault area, thereby reducing the maintenance cost relative to the replacement of the whole liquid crystal module, and also shortens the maintenance period.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a liquid crystal module according to an embodiment of the invention;
FIG. 2 is a schematic flow chart illustrating a method for correcting display of a liquid crystal module according to another embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a display correction method for a liquid crystal module according to another embodiment of the present invention;
FIG. 4 is a gamma2.2 curve of a single pixel of a liquid crystal display module display correction method according to another embodiment of the present invention;
FIG. 5 is a comparison chart of a liquid crystal display module according to another embodiment of the present invention before and after compensation;
FIG. 6 is a comparison chart of a liquid crystal display module according to another embodiment of the present invention before and after compensation;
FIG. 7 is a schematic flow chart illustrating a method for correcting display of a liquid crystal module according to another embodiment of the present invention;
FIG. 8 is a schematic view of a vertical fault line graph card of a liquid crystal display module display correction method according to another embodiment of the present invention;
fig. 9 is a schematic view of a single sub-area of a vertical fault line chart card of a liquid crystal module display correction method according to yet another embodiment of the present invention;
FIG. 10 is a schematic diagram of a horizontal fault line chart according to a display correction method for a liquid crystal module of another embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a LCD module display correction apparatus according to another embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a LCD module display correction apparatus according to another embodiment of the present invention;
fig. 13 is a schematic diagram of a hardware structure of a liquid crystal module display correction apparatus according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
Fig. 1 is a schematic structural diagram of a liquid crystal module according to an embodiment of the invention. As shown in fig. 1, each component in the liquid crystal module is, from bottom to top, a first polarizer (polarizer 1), a first liquid crystal layer (liquid crystal 1), a second polarizer (polarizer 2), a second liquid crystal layer (liquid crystal 2), a color film, and a third polarizer (polarizer 3) in sequence. The display principle of the liquid crystal module is as follows: the liquid crystal module receives natural light emitted by backlight, the natural light passes through a first polaroid to form first linearly polarized light, the first linearly polarized light passes through the optical rotation of a first liquid crystal layer (the rotation angle depends on the magnitude of driving voltage applied to each pixel of the first liquid crystal layer), the first linearly polarized light passes through a second polaroid to obtain second linearly polarized light, the second linearly polarized light passes through a color film after the optical rotation of the second liquid crystal layer to form three primary colors of Red, Green and Blue (RGB), and the formed three primary colors of RGB are emitted into human eyes after spatial light mixing, so that the human eyes see a final image displayed by the liquid crystal module.
In the specific implementation process, when the point-line display fault is found, the display fault belongs to the hardware problem, and cannot be corrected and compensated by adjusting backlight or debugging software, and the problem can be solved only by integrally replacing the liquid crystal panel or the liquid crystal module. However, when the whole lcd panel or lcd module is replaced, the hardware cost is high, and the cost for adjusting the goods and storing the goods is high, which will cause great damage to the benefit of the consumer and the manufacturer. Accordingly, the embodiment of the invention provides a liquid crystal module display correction method to reduce the maintenance cost of the display problem of the liquid crystal module.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
The following description will use specific examples to describe the display correction method of the liquid crystal module provided in the embodiments of the present invention.
Fig. 2 is a schematic flow chart illustrating a liquid crystal module display correction method according to another embodiment of the invention. As shown in fig. 2, the liquid crystal module includes at least two liquid crystal layers, and the method includes:
201. after a preset gray scale driving signal is input to each pixel in a fault area, determining the actual brightness of a liquid crystal module in the fault area; the defective region is located in the first liquid crystal layer.
In practical applications, the main implementation body of the embodiment is an electronic device capable of acquiring the actual brightness of the liquid crystal module in the failure region, and may illustratively include a logic board for inputting a predetermined grayscale driving signal to each pixel in the failure region, an image pickup device for picking up a display screen, and a processing device for calculating the actual brightness.
The compensation principle of the present embodiment is described below with reference to fig. 3 and 4, and fig. 3 is a schematic diagram of a liquid crystal module display correction method according to another embodiment of the present invention. As shown in fig. 3, when a failure occurs in a partial region of the second liquid crystal layer (liquid crystal layer 2), the transmittance of the light is increased or decreased, which results in an abnormal ratio of one or more of the three primary colors RGB, and thus an abnormal image display, and the total luminance value based on the display is proportional to the product of the display luminance of the two liquid crystal layers, and at this time, the light control is performed on the corresponding correction region (repair region) of the first liquid crystal layer (liquid crystal layer 1), so that the total luminance is recovered to normal. Fig. 4 is a gamma2.2 curve of a single pixel of a liquid crystal module display correction method according to another embodiment of the present invention. As shown in fig. 4, taking a single pixel as an example, when the abnormal pixel displays an abnormal condition, the essence of the failure is that the corresponding relationship between the driving voltage of the pixel and the display brightness thereof changes, and at this time, the gamma curve of the abnormal pixel appears as a non-standard 2.2 curve (abnormal pixel gamma), when the pixel displays too dark, the luminance of the pixel at the corresponding position in other liquid crystal layers is increased, so that the integrated luminance of the abnormal pixel and the pixel at the corresponding position can display a normal value, i.e., a standard gamma2.2 curve (integrated gamma2.2), and similarly, when the pixel displays too bright, the luminance of the pixel at the corresponding position in other liquid crystal layers is decreased, so that the integrated luminance of the abnormal pixel and the pixel at the corresponding position can display a normal value, i.e., a standard gamma2.2 curve (integrated gamma 2.2).
Based on the above principle, the present embodiment may first obtain an actual brightness value and a theoretical brightness value of the fault region, and then determine a compensation value of each pixel in the correction region according to the actual brightness value and the theoretical brightness value. And the display of the area with the fault can be recovered to be normal.
Specifically, the determining the actual brightness of the liquid crystal module in the failure area may include:
shooting a picture displayed by the liquid crystal module under the drive of the preset gray scale drive signal;
and determining the actual brightness of the liquid crystal module in the fault area according to the picture.
In practical application, after obtaining the location of the fault area, the maintenance personnel inputs the predetermined gray scale driving signal into each pixel in the fault area, and certainly, the predetermined driving signal can be input into all pixels of the whole liquid crystal module, so that the whole liquid crystal module displays under the same driving signal. And shooting the picture in the fault area through the camera equipment, and further calculating the actual brightness in the fault area according to the shot picture. Calculating the brightness according to the shot picture belongs to the prior art in the field, and the description of this embodiment is omitted.
202. And determining the compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal.
In this embodiment, the theoretical brightness of the fault area may be calculated and obtained according to the predetermined gray scale driving signal, and a normal display picture obtained by driving a normal area based on the predetermined gray scale driving signal may be photographed, so that the theoretical brightness may be determined according to the photographed picture of the normal area.
Optionally, the determining a compensation value of each pixel in the failure region according to the actual brightness and the predetermined grayscale driving signal includes:
2021. and calculating the theoretical brightness of the liquid crystal module in the fault area according to the preset gray scale determination signal.
2022. And determining a compensation value of each pixel of the fault area according to the actual brightness and the theoretical brightness.
In one implementation manner, the determining the compensation value of each pixel in the failure area according to the actual brightness and the theoretical brightness includes:
and calculating the ratio of the actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
This implementation is illustrated below in conjunction with fig. 5. Fig. 5 is a comparison chart before and after compensation of a liquid crystal module display correction method according to another embodiment of the invention. As shown in fig. 5, when the resolution of the normal layer pixel is greater than or equal to the resolution of the abnormal layer pixel, the brightness of the normal layer is reduced accordingly, and the normal display of the adjacent pixels is not affected because the resolution of the normal layer pixel is greater than the resolution of the abnormal layer. To display a bright line with a brightness of c (e.g., 192), one of the liquid crystal layers is abnormal in driving, and the actual brightness is a (a > b)
E.g., 255) so that the combined luminance of the two layers of liquid crystals is b, and b is between a and c, and at this time, the normal layer luminance is reduced to d (e.g., 128), so that the partial combined luminance can be kept unchanged at the luminance c to be displayed.
In another implementation manner, the resolution of the first liquid crystal layer is greater than the resolution of the second liquid crystal layer, each pixel in a failure region includes an R sub-pixel, a G sub-pixel, and a B sub-pixel, and the determining a compensation value of each pixel in the failure region according to the actual brightness and the theoretical brightness includes:
and aiming at each pixel in the fault area, adjusting the R sub-pixel, the G sub-pixel and the B sub-pixel of the pixel to be the same brightness according to the actual brightness to obtain the updated actual brightness.
And calculating the ratio of the updated actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
This implementation is illustrated below in conjunction with fig. 6. Fig. 6 is a comparison chart before and after compensation of a liquid crystal module display correction method according to another embodiment of the invention. As shown in fig. 6, when the resolution of the normal layer pixel is less than the resolution of the abnormal layer pixel, a line with a brightness b (e.g. 192) is to be displayed, wherein the R pixel of one layer of liquid crystal is abnormal in driving, and the gray scale of the displayed R pixel is a (e.g. 255) higher than b, so that the R brightness is higher than b after matching with the other layer of liquid crystal, and the color mixture is red overall. At this time, since the resolution of the normal layer pixels is smaller than that of the abnormal layer, it is necessary to pre-compensate the luminance of the GB pixels in the abnormal layer to make it the same as the luminance of the R pixels, that is, the luminance of the GB pixels is now compensated to a, and then the compensation for the R bright line is realized by reducing the luminance of the normal layer to c (e.g., 128).
203. Loading the compensation value into a driving signal of each pixel of a correction area corresponding to the fault area so as to enable the liquid crystal module to display normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers.
In practical application, if the compensation value is the ratio of the actual brightness to the theoretical brightness of the fault area, the corrected driving signal can be obtained by multiplying the ratio by the original driving signal of the correction area, so that each pixel in the correction area is driven by the corrected driving signal, and the comprehensive brightness of the correction area and the fault area is in accordance with the normal brightness. I.e. matched to the ambient brightness display.
In the LCD module display correction method provided by this embodiment, after inputting the predetermined gray-scale driving signal to each pixel in the failure region, determining the actual brightness of the liquid crystal module in the fault area, wherein the fault area is positioned in the first liquid crystal layer, determining a compensation value of each pixel of the fault region according to the actual brightness and the preset gray scale driving signal, loading the compensation value into the driving signal of each pixel of a correction region corresponding to the fault region, so that the liquid crystal module displays normally, the correction area is positioned in a second liquid crystal layer, the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers, and the brightness of the liquid crystal layer in the non-fault area can be adjusted, the display defects of the liquid crystal layer where the fault area is located are compensated, so that compared with the replacement of the whole liquid crystal module, the maintenance cost is reduced, and the maintenance period is shortened.
Fig. 7 is a flowchart illustrating a liquid crystal module display correction method according to another embodiment of the present invention. As shown in fig. 7, on the basis of the above embodiment, the present embodiment describes in detail the identification process of the fault area, and the method includes:
701. first layer information of a first liquid crystal layer where a fault area is located and first coordinate information of the fault area are obtained.
In practical applications, there are various ways to locate the fault area, for example: the fault area can be located by existing fault location software. The embodiment also provides a positioning mode through the fault positioning graphic card. The positioning mode has high efficiency and saves time
Specifically, the acquiring first coordinate information of the fault area may include:
7011. playing a fault positioning graphic card; the fault location card includes a plurality of identification areas, and each identification area includes a plurality of display lines.
7012. And receiving the position information of the display line which is coincident with the fault line in the fault area in the fault positioning graphic card and input by a user.
7013. And determining the first coordinate information according to the position information.
In practical application, when a maintenance worker observes that a display abnormal area, namely a fault area, exists in a display picture, a prefabricated fault positioning card can be played through the liquid crystal module, and the fault positioning card can comprise a transverse fault line positioning card box and a vertical fault line positioning card. Thereby enabling the positioning of the horizontal and vertical lines. Specifically, after the fault positioning card is played, a maintenance person judges which display line in the fault area coincides with the fault line in the fault positioning card, so that the coincident fault line can be positioned.
The following describes an example of the fault locator card in the present embodiment with reference to fig. 8 to 10. FIG. 8 is a schematic view of a vertical fault line graph card of a liquid crystal display module display correction method according to another embodiment of the present invention; fig. 9 is a schematic view of a single sub-area of a vertical fault line chart card of a liquid crystal module display correction method according to yet another embodiment of the present invention; fig. 10 is a schematic diagram of a horizontal fault line graph card of a liquid crystal module display correction method according to another embodiment of the invention. As shown in fig. 8, in the case of an Ultra High Definition (UHD) panel with a resolution of 3840 × 2160, the Ultra High Definition (UHD) panel includes transverse display lines (horizontal display lines) 2160, vertical display lines (vertical display lines) 3840 × 3 — 11520, and a vertical fault line as an example, the coordinates X of the fault line are located, Y (X represents a serial number in the horizontal direction from left to right, and the fault line is located, Y represents a serial number in the vertical direction from top to bottom, and the whole panel is divided into 39 rectangular regions, each region includes 10 vertical lines, each vertical line is divided into 10 segments, 10 × 10 — 100 fault vertical lines can be located, the first 38 segments each have 100 vertical lines, the 39 th segment has 40 vertical lines, and 3840 vertical lines are located. When the panel fault line is a vertical line, playing a fault location graphic card, where the fault line coincides with a certain display line in the graphic card, as shown in fig. 9, the fault line is located in the 23 th zone and is located in the 4 th vertical line in the zone, and the 5 th segment on the vertical line, so that the serial number X of the fault line is 100 (23-1) +10 (4-1) +5 is 2235.
Similarly, as shown in fig. 10, the serial number of the horizontal fault line can be located by the horizontal fault location graphic card, and the calculation mode is the same as the location of the vertical fault line.
Therefore, if the area number is m, the number of the line in the area is n, and the number of the line segments is p, the number of the fault line X and the number of the Y are: x (or Y) ═ 100 (m-1) +10(n-1) + p.
The position of the fault line can be rapidly and accurately positioned by the method.
Those skilled in the art will appreciate that the partition of the fault locator card can be implemented in a variety of ways, as long as it covers the rows and columns of the liquid crystal module where the pixels are located. This embodiment is not particularly limited thereto.
702. Second layer information of a modified region is determined from the first layer information, and second coordinate information of the modified region is determined from the first coordinate information.
Optionally, the liquid crystal layer corresponding to the second layer of information and the liquid crystal layer corresponding to the first layer of information are different layers. That is, if the first layer information identifies the first liquid crystal layer, the second layer information is a liquid crystal layer of a layer other than the first liquid crystal layer. When the total number of liquid crystal layers exceeds two layers, the correction region may be any one layer or at least two liquid crystal layers other than the layer where the failure region is located.
Optionally, the determining second coordinate information of the modified area according to the first coordinate information may include: and taking the first coordinate information as the second coordinate information.
703. After a preset gray scale driving signal is input to each pixel in a fault area, determining the actual brightness of a liquid crystal module in the fault area; the defective region is located in the first liquid crystal layer.
704. And determining the compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal.
705. Loading the compensation value into a driving signal of each pixel of a correction area corresponding to the fault area so as to enable the liquid crystal module to display normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers.
Steps 703 to 705 in this embodiment are similar to steps 201 to 203 in the above embodiment, and are not described again here.
According to the liquid crystal module display correction method provided by the embodiment, the coordinates of the fault area are quickly and accurately positioned through the fault positioning card. And after inputting a preset gray scale driving signal to each pixel in a fault area, determining the actual brightness of the liquid crystal module in the fault area, wherein the fault area is positioned in a first liquid crystal layer, determining a compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal, and loading the compensation value into the driving signal of each pixel in a correction area corresponding to the fault area so that the liquid crystal module displays normally, wherein the correction area is positioned in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers, and the display defect of the liquid crystal layer in the fault area can be compensated by adjusting the brightness of the liquid crystal layer in which the non-fault area is positioned, so that the maintenance cost is reduced and the maintenance period is shortened relative to the replacement of the whole liquid crystal module.
Fig. 11 is a schematic structural diagram of a liquid crystal module display correction apparatus according to another embodiment of the present invention. As shown in fig. 11, the liquid crystal module includes at least two liquid crystal layers, and the liquid crystal module display correction apparatus 110 includes: a first determining module 1101, a second determining module 1102 and a loading module 1103.
The first determining module 1101 is configured to determine actual brightness of the liquid crystal module in the fault area after a predetermined grayscale driving signal is input to each pixel in the fault area; the defective region is located in the first liquid crystal layer.
A second determining module 1102, configured to determine a compensation value of each pixel in the failure region according to the actual brightness and the predetermined grayscale driving signal.
A loading module 1103, configured to load the compensation value into a driving signal of each pixel in a correction area corresponding to the failure area, so that the liquid crystal module displays normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers.
According to the liquid crystal module display correction device provided by the embodiment of the invention, after a preset gray scale driving signal is input to each pixel in a fault area through a first determining module 1101, the actual brightness of the liquid crystal module in the fault area is determined, the fault area is positioned in a first liquid crystal layer, a second determining module 1102 determines a compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal, a loading module 1103 loads the compensation value into the driving signal of each pixel in a correction area corresponding to the fault area so as to enable the liquid crystal module to display normally, the correction area is positioned in a second liquid crystal layer, the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers, the display defects of the liquid crystal layer in the fault area can be compensated through adjusting the brightness of the liquid crystal layer in which the non-fault area is positioned, and therefore, compared with the replacement of the whole liquid crystal module, the maintenance cost is reduced, and the maintenance period is shortened.
Fig. 12 is a schematic structural diagram of a liquid crystal module display correction apparatus according to still another embodiment of the present invention. As shown in fig. 12, the lcd module display correction apparatus 110 further includes: an obtaining module 1104 and a third determining module 1105.
Optionally, the second determining module 1102 is specifically configured to:
calculating theoretical brightness of the liquid crystal module in the fault area according to the preset gray scale determining signal;
and determining a compensation value of each pixel of the fault area according to the actual brightness and the theoretical brightness.
Optionally, the resolution of the first liquid crystal layer is less than or equal to the resolution of the second liquid crystal layer, and the second determining module 1102 is specifically configured to:
and calculating the ratio of the actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
Optionally, the resolution of the first liquid crystal layer is greater than the resolution of the second liquid crystal layer, each pixel in the failure region includes an R sub-pixel, a G sub-pixel, and a B sub-pixel, and the second determining module 1102 is specifically configured to:
aiming at each pixel in the fault area, adjusting the R sub-pixel, the G sub-pixel and the B sub-pixel of the pixel to be the same brightness according to the actual brightness to obtain the updated actual brightness;
and calculating the ratio of the updated actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
Optionally, the first determining module 1101 is specifically configured to:
shooting a picture displayed by the liquid crystal module under the drive of the preset gray scale drive signal;
and determining the actual brightness of the liquid crystal module in the fault area according to the picture.
Optionally, the apparatus further comprises:
an obtaining module 1104, configured to obtain first layer information of a first liquid crystal layer where a fault area is located and first coordinate information of the fault area;
a third determining module 1105, configured to determine second layer information of the modified area according to the first layer information, and determine second coordinate information of the modified area according to the first coordinate information.
Optionally, the obtaining module 1104 is specifically configured to:
playing a fault positioning graphic card; the fault positioning card comprises a plurality of identification areas, and each identification area comprises a plurality of display lines;
receiving position information of a display line which is input by a user and is overlapped with a fault line in a fault area in a fault positioning graphic card;
and determining the first coordinate information according to the position information.
The liquid crystal module display correction device provided by the embodiment of the invention can be used for executing the method embodiment, the realization principle and the technical effect are similar, and the embodiment is not repeated.
Fig. 13 is a schematic diagram of a hardware structure of a liquid crystal module display correction apparatus according to another embodiment of the present invention. As shown in fig. 13, the liquid crystal module display correction apparatus 130 provided in this embodiment includes: at least one processor 1301 and memory 1302. The liquid crystal module display correction apparatus 130 further includes a communication part 1303. The processor 1301, the memory 1302, and the communication unit 1303 are connected by a bus 1304.
In a specific implementation process, the at least one processor 1301 executes the computer-executable instructions stored in the memory 1302, so that the at least one processor 1301 executes the liquid crystal module display correction method executed by the liquid crystal module display correction apparatus 130.
When the compensation value calculation in the present embodiment is performed by the server, the communication section 1303 may transmit the actual value and the predetermined grayscale driving signal to the server.
For a specific implementation process of the processor 1301, reference may be made to the above method embodiments, which have similar implementation principles and technical effects, and details are not described herein again.
In the embodiment shown in fig. 13, it should be understood that the Processor may be a Central Processing Unit (CPU), other general-purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise high speed RAM memory and may also include non-volatile storage NVM, such as at least one disk memory.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The application also provides a computer-readable storage medium, wherein a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the liquid crystal module display correction method executed by the liquid crystal module display correction device is realized.
The application also provides a computer-readable storage medium, wherein a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the liquid crystal module display correction method executed by the liquid crystal module display correction device is realized.
The computer-readable storage medium may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in the apparatus.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A liquid crystal module display correction method is characterized in that the liquid crystal module comprises at least two liquid crystal layers, and the method comprises the following steps:
after a preset gray scale driving signal is input to each pixel in a fault area, determining the actual brightness of a liquid crystal module in the fault area; the failure region is located in the first liquid crystal layer;
determining a compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal;
loading the compensation value into a driving signal of each pixel of a correction area corresponding to the fault area so as to enable the liquid crystal module to display normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers.
2. The method of claim 1, wherein determining the compensation value for each pixel of the failure region based on the actual brightness and the predetermined grayscale drive signal comprises:
calculating theoretical brightness of the liquid crystal module in the fault area according to the preset gray scale determining signal;
and determining a compensation value of each pixel of the fault area according to the actual brightness and the theoretical brightness.
3. The method according to claim 2, wherein the resolution of the first liquid crystal layer is less than or equal to the resolution of the second liquid crystal layer, and the determining the compensation value of each pixel in the fault area according to the actual brightness and the theoretical brightness comprises:
and calculating the ratio of the actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
4. The method of claim 2, wherein the resolution of the first liquid crystal layer is greater than the resolution of the second liquid crystal layer, each pixel in a failure region comprises an R sub-pixel, a G sub-pixel, and a B sub-pixel, and the determining a compensation value for each pixel in the failure region based on the actual brightness and the theoretical brightness comprises:
aiming at each pixel in the fault area, adjusting the R sub-pixel, the G sub-pixel and the B sub-pixel of the pixel to be the same brightness according to the actual brightness to obtain the updated actual brightness;
and calculating the ratio of the updated actual brightness to the theoretical brightness, and determining the compensation value of each pixel in the fault area according to the ratio.
5. The method according to any one of claims 1 to 4, wherein the determining the actual brightness of the liquid crystal module in the failure region comprises:
shooting a picture displayed by the liquid crystal module under the drive of the preset gray scale drive signal;
and determining the actual brightness of the liquid crystal module in the fault area according to the picture.
6. The method according to any one of claims 1 to 4, wherein before inputting the predetermined grayscale driving signal to each pixel in the failure region, the method further comprises:
acquiring first layer information of a first liquid crystal layer where a fault area is located and first coordinate information of the fault area;
second layer information of a modified region is determined from the first layer information, and second coordinate information of the modified region is determined from the first coordinate information.
7. The method of claim 6, wherein the obtaining the first coordinate information of the fault region comprises:
playing a fault positioning graphic card; the fault positioning card comprises a plurality of identification areas, and each identification area comprises a plurality of display lines;
receiving position information of a display line which is input by a user and is overlapped with a fault line in a fault area in a fault positioning graphic card;
and determining the first coordinate information according to the position information.
8. The utility model provides a liquid crystal module shows correction device which characterized in that, liquid crystal module includes two at least liquid crystal layer, and this equipment includes:
the first determining module is used for determining the actual brightness of the liquid crystal module in the fault area after a preset gray scale driving signal is input to each pixel in the fault area; the failure region is located in the first liquid crystal layer;
the second determining module is used for determining the compensation value of each pixel in the fault area according to the actual brightness and the preset gray scale driving signal;
the loading module is used for loading the compensation value into the driving signal of each pixel of the correction area corresponding to the fault area so as to enable the liquid crystal module to display normally; the correction area is located in a second liquid crystal layer, and the second liquid crystal layer and the first liquid crystal layer are different liquid crystal layers.
9. A liquid crystal module display correction apparatus, characterized by comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor executes the liquid crystal module display correction method according to any one of claims 1 to 7.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and when a processor executes the computer-executable instructions, the method for correcting display of a liquid crystal module according to any one of claims 1 to 7 is implemented.
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