CN109410873B - Driving method and system and display device - Google Patents
Driving method and system and display device Download PDFInfo
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- CN109410873B CN109410873B CN201811532692.9A CN201811532692A CN109410873B CN 109410873 B CN109410873 B CN 109410873B CN 201811532692 A CN201811532692 A CN 201811532692A CN 109410873 B CN109410873 B CN 109410873B
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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
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
Abstract
The invention is suitable for the technical field of display, and provides a driving method, a driving system and a display device.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a driving method, a driving system and a display device.
Background
With the development of display technology, display devices such as liquid crystal panels and displays are becoming thinner, larger in screen size, lower in power consumption and lower in cost. Various display devices are developed, and great convenience is brought to daily production and life of people.
However, in the production process of the display device, the process and material differences cause the display panel to have bright-line or dark-line type spots (mura), and how to adjust the display screen to the best state to effectively eliminate the spots in the display screen becomes an important issue to be faced in the production process of the display panel.
Disclosure of Invention
In view of this, embodiments of the present invention provide a driving method, a system and a display device, which can effectively eliminate the speckle in the display image of the display panel and improve the display image quality.
An embodiment of the present invention provides a driving method, including:
acquiring an original image displayed by a display panel;
setting a compensation model corresponding to the original image;
generating a spot compensation table according to the compensation model;
checking whether the patch compensation table is saturated;
if the spot compensation table is not saturated, outputting the spot compensation table, and compensating the original image through the spot compensation table;
and if the spot compensation table is saturated, returning to the step of setting the compensation model corresponding to the original image, and resetting the compensation model.
One embodiment of the present invention provides a drive system, including:
the image acquisition module is used for acquiring an original image displayed by the display panel;
the setting module is used for setting a compensation model corresponding to the original image;
the generating module is used for generating a spot compensation table according to the compensation model;
the checking module is used for checking whether the spot compensation table is saturated or not;
the compensation module is used for outputting the spot compensation table if the spot compensation table is not saturated, and compensating the original image through the spot compensation table;
and the returning module is used for returning to the step of setting the compensation model corresponding to the original image and resetting the compensation model if the spot compensation table is saturated.
An embodiment of the present invention provides a display device, which includes a display panel, a source driver chip, a gate driver chip, a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method when executing the computer program.
An embodiment of the invention provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method.
According to the embodiment of the invention, the original image displayed by the display panel is obtained, the compensation model corresponding to the original image is set, and the unsaturated spot compensation table with the gray scale smaller than the maximum gray scale of the display panel is output according to the compensation model, so that the original image can be compensated through the unsaturated spot compensation table, the spots in the original image are effectively eliminated, and the display image quality is improved.
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 embodiments or the prior art descriptions will be briefly described 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 inventive exercise.
Fig. 1 and fig. 2 are schematic flow charts of a driving method provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of coordinate axes in an original image provided by one embodiment of the present invention;
FIG. 4 is a diagram of coordinate axes and curve functions provided by an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a drive system provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all 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.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
An embodiment of the present invention provides a driving method that can be applied to any display device having display and data processing functions, and can be a computer program executed by a processor of the display device.
In application, the Display device may be any type of Display device, such as an LCD (Liquid crystal Display), an OLED (Organic electroluminescent Display), a QLED (Quantum Dot Light Emitting Diodes) Display device, a curved Display device, or the like.
In Application, the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The processor may also be a screen driver board (TCON) of the display device.
As shown in fig. 1, the driving method provided in this embodiment includes:
and step S101, acquiring an original image displayed by the display panel.
In application, the display panel refers to the display panel of the display device, and an original image displayed by the display panel can be acquired by any image pickup equipment with an image pickup function, such as a mobile phone, a tablet computer, a video camera, and the like.
And step S102, setting a compensation model corresponding to the original image.
In application, the compensation model may be preset and stored in a computer storage medium of the display device, and the compensation model may include a plurality of compensation models, and the corresponding compensation model may be selected according to the distribution of the spots in the original image.
In one embodiment, step S102 includes:
step S1021, analyzing the distribution situation of the spots in the original image;
step S1022, setting a compensation model corresponding to the original image according to the analysis result.
In application, the computer storage medium may be a hard disk or a memory of the display device, or may be an external storage device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like.
As shown in fig. 2, in one embodiment, step S102 or step S1022 includes:
step S201, with the geometric center of the original image as an origin, determining a preset number of coordinate axes.
In application, other arbitrary positions in the original image can also be selected as the origin according to actual needs, for example, the end points of any boundary line of the original image.
In application, the shape of the original image is the same as the shape of the display area of the display panel, and the display area of the display panel is usually rectangular, but may be set to any other shape according to actual needs, for example, the shape of the display area of the curved display device, that is, the curved surface whose orthographic projection shape is rectangular.
In application, the preset number can be set according to actual needs, and theoretically, infinite coordinate axes can be set by using the origin of the original image.
In one embodiment, the preset number of coordinate axes includes at least one of coordinate axes extending in two diagonal directions of the original image and/or in a direction of a symmetry axis of the original image with a geometric center of the original image as an origin.
In one embodiment, the preset number is 8, and the preset number of coordinate axes includes coordinate axes extending in two diagonal directions of the original image and in a direction of a symmetry axis of the original image with a geometric center of the original image as an origin.
As shown in fig. 3, it is exemplarily shown that the geometric center of a rectangular original image is taken as an origin to 8 coordinate axes extending in two diagonal directions of the original image and in a direction of a symmetry axis of the original image.
In application, according to the distribution of the spots in the original image, a relatively large number of coordinate axes can be set in an area with dense spots, a relatively small number of coordinate axes can be set in an area with sparse spots, and no coordinate axes can be set in an area without spots. Or setting coordinate axes in each region of the original image without considering the distribution condition of the spots, and setting a large number of coordinate axes when the spots are densely distributed; when the spots are sparsely distributed, fewer coordinate axes are set. The different compensation models have different set numbers and set positions of coordinate axes, so the compensation models corresponding to the original image are set, that is, the coordinate axes with corresponding numbers and positions are set according to the spot distribution condition of the original image.
And S202, acquiring a brightness distribution curve corresponding to each coordinate axis.
In one embodiment, step S202 includes:
step S2021, using the coordinate values of the pixels distributed along each coordinate axis direction as a variable, using the brightness of the pixels distributed along each coordinate axis direction as a dependent variable, and performing curve fitting on the pixels distributed along each coordinate axis direction to obtain a brightness distribution curve corresponding to each coordinate axis.
In application, the curve fitting may be performed by any curve fitting algorithm, for example, a least squares method.
And step S203, obtaining a target brightness distribution curve according to the brightness distribution curve, the ideal brightness and the maximum variable value of the brightness distribution curve.
In application, the ideal brightness refers to the ideal brightness that should be achieved when the pixel is normally displayed, that is, the theoretical value of the brightness of the pixel, and the value range of the ideal brightness is 0 to 255 based on the RGB color mode, for example, when the original image is a full black image, the ideal brightness of all the pixels of the display panel should be 0 based on the RGB color mode. The maximum variable value of the brightness distribution curve refers to the maximum coordinate value of the pixel points distributed along the coordinate axis direction.
In one embodiment, the implementation formula of step S203 includes:
F(x)＝a；
c＝max(F(x)-f(x))；
F’(x)＝-c^2/(a*b)*x+a；
where F (x) is an ideal luminance, F (x) is a luminance distribution curve, F' (x) is a target luminance distribution curve, x is a variable, a and c are both constants, and b is a maximum value of x and is the maximum variable value.
In application, the maximum value of x is the maximum variable value, and b is the maximum value of x.
As shown in fig. 4, coordinate axes X and Y are exemplarily shown, in which the coordinate value corresponding to the variable X in each curve function is located on the X axis, the coordinate value corresponding to the dependent variable in each curve function is located on the Y axis, and the coordinate on the Y axis represents the magnitude of the luminance.
And S204, obtaining a compensation value of each coordinate axis according to the brightness distribution curve corresponding to each coordinate axis and the target brightness distribution curve.
In application, the compensation value is the difference between the brightness distribution curve and the target brightness distribution curve.
In one embodiment, the compensation value is F' (x) -F (x). The compensation value is positive, which indicates that the brightness of the pixel point corresponding to the compensation value needs to be improved; and when the compensation value is negative, the brightness of the pixel point corresponding to the compensation value needs to be reduced, and when the compensation value is 0, the brightness of the pixel point corresponding to the compensation value reaches the standard.
And S205, obtaining an ideal target plane brightness function of other areas in the original image as a compensation model corresponding to the original image according to the compensation value of each coordinate axis.
In application, since the compensation value of each coordinate axis only includes the compensation value corresponding to the pixel distributed along the coordinate axis, and the original image is usually a plane, the compensation value of each pixel in the ideal target plane where the whole original image is located needs to be further obtained.
In one embodiment, step S205 includes:
step S2051, according to the compensation value of each coordinate axis, obtaining an ideal target plane brightness function of other regions in the original image as a compensation model corresponding to the original image by an interpolation method.
In application, the ideal target plane brightness function of other areas in the original image can be obtained through other types of interpolation algorithms, so that the compensation value corresponding to each pixel point in the original image is obtained.
And step S103, generating a spot compensation table according to the compensation model.
In application, the spot compensation table includes a compensation value corresponding to each pixel point in the original image, and the compensation value is used for compensating the brightness of each pixel point in the original image.
In one embodiment, the speckle compensation table is a display look-up table.
In application, the spot compensation table may be implemented by a look-up table (LUT), or may be implemented by another data table or a Random Access Memory (RAM) type storage medium, which has input data with the same function as the LUT, that is, input data corresponding to the LUT is searched for, that is, corresponding output data according to the input data.
And step S104, checking whether the spot compensation table is saturated or not.
In application, the spot compensation table is saturated, that is, the luminance (gray scale) of the corresponding pixel point is compensated by a compensation value in the spot compensation table and then is greater than the maximum luminance (gray scale) of the display panel, that is, the luminance compensation is performed according to the compensation value in the spot compensation table, which cannot be realized in actual operation and is feasible only on a theoretical numerical value. For example, the maximum gray scale of the display panel is 255, the gray scale corresponding to the actual brightness of a pixel is 200, and the compensation value of the pixel obtained by looking up the spot compensation table is 60, so that the theoretical gray scale value after the brightness of the pixel is compensated is 200+ 60-260, and the 260 gray scale is greater than the maximum gray scale 255 of the display panel, which cannot be realized in actual operation and is only feasible on the theoretical value.
In one embodiment, step S104 includes:
checking whether a compensation value exists in the spot compensation table or not so that the gray scale of the corresponding pixel point is larger than the maximum gray scale of the display panel;
if so, the spot compensation meter is saturated; otherwise, the patch compensation table is not saturated.
And S105, if the spot compensation table is not saturated, outputting the spot compensation table, and compensating the original image through the spot compensation table.
In application, the original image is compensated through the spot compensation table, namely a compensation value corresponding to each pixel point in the original image in the spot compensation table is found, and then the brightness of each pixel point is compensated. The magnitude of the driving voltage output by the source driving chip can be controlled by a screen driving board of the display panel to realize the brightness compensation of the pixel point. If the compensation value of the pixel point is positive, the source electrode driving chip is controlled to correspondingly increase the voltage for driving the pixel point, otherwise, the voltage for driving the pixel point is reduced.
And S204, if the spot compensation table is saturated, returning to the step of setting the compensation model corresponding to the original image, and resetting the compensation model.
In the application, if the speckle compensation table is saturated, it indicates that the compensation value corresponding to the pixel point is not feasible in the actual operation, and the actual application cannot be performed, so that the step S102 needs to be returned to modify and adjust the compensation model, and the compensation model needs to be reset to obtain the unsaturated speckle compensation table.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
As shown in fig. 5, an embodiment of the present invention provides a driving system 5 for executing the method steps in the above embodiments, the system may be a software program system in a display device or a processor of the display device, the driving system 5 includes:
an image obtaining module 501, configured to obtain an original image displayed by a display panel;
a setting module 502, configured to set a compensation model corresponding to the original image;
a generating module 503, configured to generate a speckle compensation table according to the compensation model;
a checking module 504 for checking whether the blob compensation table is saturated;
a compensation module 505, configured to output the speckle compensation table if the speckle compensation table is not saturated, and compensate the original image through the speckle compensation table;
a returning module 506, configured to return to the step of setting the compensation model corresponding to the original image if the speckle compensation table is saturated, and reset the compensation model.
In one embodiment, the setting module 503 is configured to:
analyzing the distribution condition of the spots in the original image;
and setting a compensation model corresponding to the original image according to the analysis result.
In one embodiment, the setting module 503 is configured to:
determining a preset number of coordinate axes by taking the geometric center of the original image as an origin;
acquiring a brightness distribution curve corresponding to each coordinate axis;
obtaining a target brightness distribution curve according to the brightness distribution curve, the ideal brightness and the maximum variable value of the brightness distribution curve;
obtaining a compensation value of each coordinate axis according to the brightness distribution curve corresponding to each coordinate axis and the target brightness distribution curve;
and obtaining an ideal target plane brightness function of other areas in the original image as a compensation model corresponding to the original image according to the compensation value of each coordinate axis.
In one embodiment, the checking module 504 is configured to:
checking whether a compensation value exists in the spot compensation table or not so that the gray scale of the corresponding pixel point is larger than the maximum gray scale of the display panel;
if so, the spot compensation meter is saturated; otherwise, the patch compensation table is not saturated.
According to the embodiment of the invention, the original image displayed by the display panel is obtained, the compensation model corresponding to the original image is set, and the unsaturated spot compensation table with the gray scale smaller than the maximum gray scale of the display panel is output according to the compensation model, so that the original image can be compensated through the unsaturated spot compensation table, the spots in the original image are effectively eliminated, and the display image quality is improved.
As shown in fig. 6, one embodiment of the present invention provides a display device 6, which includes: a processor 60, a memory 61 and a computer program 62, such as a driver, stored in said memory 61 and operable on said processor 60. The processor 60, when executing the computer program 62, implements the steps in the various driving method embodiments described above, such as the steps S101 to S106 shown in fig. 1. Alternatively, the processor 60, when executing the computer program 62, implements the functions of the modules in the above device embodiments, such as the functions of the modules 501 to 506 shown in fig. 5.
Illustratively, the computer program 62 may be partitioned into one or more modules that are stored in the memory 61 and executed by the processor 60 to implement the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 62 in the display device 6. For example, the computer program 62 may be divided into an image acquisition module, a setup module, a generation module, an inspection module, a compensation module, and a return module, each of which functions specifically as follows:
the image acquisition module is used for acquiring an original image displayed by the display panel;
the setting module is used for setting a compensation model corresponding to the original image;
the generating module is used for generating a spot compensation table according to the compensation model;
the checking module is used for checking whether the spot compensation table is saturated or not;
the compensation module is used for outputting the spot compensation table if the spot compensation table is not saturated, and compensating the original image through the spot compensation table;
and the returning module is used for returning to the step of setting the compensation model corresponding to the original image and resetting the compensation model if the spot compensation table is saturated.
The display device 6 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The display device may include, but is not limited to, a processor 60, a memory 61. In one embodiment, the display device may further include a display panel, and a source Driver IC (source Driver IC) and a Gate Driver IC (Gate Driver IC) respectively connected to the processor and the display panel. It will be appreciated by those skilled in the art that fig. 6 is merely an example of the display device 6, and does not constitute a limitation of the display device 6, and may include more or less components than those shown, or some components may be combined, or different components, for example, the display device may further include an input-output device, a network access device, a bus, etc.
The Processor 60 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 61 may be an internal storage unit of the display device 6, such as a hard disk or a memory of the display device 6. The memory 61 may also be an external storage device of the display device 6, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the display device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the display apparatus 6. The memory 61 is used for storing the computer program and other programs and data required by the display device. The memory 61 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated module, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (9)
1. A driving method, characterized by comprising:
acquiring an original image displayed by a display panel;
setting a compensation model corresponding to the original image;
generating a spot compensation table according to the compensation model;
checking whether the patch compensation table is saturated;
if the spot compensation table is not saturated, outputting the spot compensation table, and compensating the original image through the spot compensation table;
if the spot compensation table is saturated, returning to the step of setting the compensation model corresponding to the original image, and resetting the compensation model;
setting a compensation model corresponding to the original image, comprising:
determining a preset number of coordinate axes by taking the geometric center of the original image as an origin;
acquiring a brightness distribution curve corresponding to each coordinate axis;
obtaining a target brightness distribution curve according to the brightness distribution curve, the ideal brightness and the maximum variable value of the brightness distribution curve;
obtaining a compensation value of each coordinate axis according to the brightness distribution curve corresponding to each coordinate axis and the target brightness distribution curve;
and obtaining an ideal target plane brightness function of other areas in the original image as a compensation model corresponding to the original image according to the compensation value of each coordinate axis.
2. The driving method according to claim 1, wherein the preset number of coordinate axes includes at least one of coordinate axes extending in two diagonal directions of the original image with a geometric center of the original image as an origin and in a direction of a symmetry axis of the original image.
3. The driving method according to claim 2, wherein the preset number is 8, and the preset number of coordinate axes includes coordinate axes extending in two diagonal directions of the original image with a geometric center of the original image as an origin and in a direction of a symmetry axis of the original image.
4. The driving method according to claim 1, wherein obtaining the luminance distribution curve corresponding to each of the coordinate axes includes:
and performing curve fitting on the pixel points distributed along each coordinate axis direction by taking the coordinate values of the pixel points distributed along each coordinate axis direction as variables and the brightness of the pixel points distributed along each coordinate axis direction as dependent variables to obtain a brightness distribution curve corresponding to each coordinate axis.
5. The driving method according to claim 1 or 4, wherein obtaining a calculation formula of a target luminance distribution curve based on the luminance distribution curve, an ideal luminance, and a maximum variable value of the luminance distribution curve includes:
F(x)＝a；
c＝max(F(x)-f(x))；
F’(x)＝-c^2/(a*b)*x+a；
where F (x) is an ideal luminance, F (x) is a luminance distribution curve, F' (x) is a target luminance distribution curve, x is a variable, a and c are both constants, and b is a maximum value of x and is the maximum variable value.
6. The driving method according to claim 5, wherein the obtaining of the compensation value for each of the coordinate axes from the luminance distribution curve corresponding to each of the coordinate axes and the target luminance distribution curve includes:
the compensation value is F' (x) -F (x).
7. The driving method according to claim 1, wherein the spot compensation table is a display look-up table.
8. A drive system, comprising:
the image acquisition module is used for acquiring an original image displayed by the display panel;
the setting module is used for setting a compensation model corresponding to the original image;
the generating module is used for generating a spot compensation table according to the compensation model;
the checking module is used for checking whether the spot compensation table is saturated or not;
the compensation module is used for outputting the spot compensation table if the spot compensation table is not saturated, and compensating the original image through the spot compensation table;
a returning module, configured to return to the step of setting the compensation model corresponding to the original image if the speckle compensation table is saturated, and reset the compensation model;
the setting module is specifically configured to:
determining a preset number of coordinate axes by taking the geometric center of the original image as an origin;
acquiring a brightness distribution curve corresponding to each coordinate axis;
obtaining a target brightness distribution curve according to the brightness distribution curve, the ideal brightness and the maximum variable value of the brightness distribution curve;
obtaining a compensation value of each coordinate axis according to the brightness distribution curve corresponding to each coordinate axis and the target brightness distribution curve;
and obtaining an ideal target plane brightness function of other areas in the original image as a compensation model corresponding to the original image according to the compensation value of each coordinate axis.
9. A display device comprising a display panel, a source driver chip, a gate driver chip, a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method according to any one of claims 1 to 7 when executing the computer program.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811532692.9A CN109410873B (en) | 2018-12-14 | 2018-12-14 | Driving method and system and display device |
Applications Claiming Priority (1)
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