CN109064995A - Luminance compensation method, display panel and the luminance compensating mechanism of display panel - Google Patents
Luminance compensation method, display panel and the luminance compensating mechanism of display panel Download PDFInfo
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- CN109064995A CN109064995A CN201811331227.9A CN201811331227A CN109064995A CN 109064995 A CN109064995 A CN 109064995A CN 201811331227 A CN201811331227 A CN 201811331227A CN 109064995 A CN109064995 A CN 109064995A
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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
- 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
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a kind of luminance compensation methods of display panel, comprising the following steps: obtains the brightness value of each display subregion of display terminal；Average brightness value is calculated according to the brightness value of each display subregion, and calculate the brightness value of each display subregion and the difference of the average brightness value, or the display brightness value of each display subregion is calculated by preset algorithm, and calculate the difference of the brightness value of the display brightness value and each display subregion；According to the difference of calculating, the brightness for coping with each display subregion is compensated.The invention also discloses a kind of display panel and the luminance compensating mechanisms of display panel.The present invention can eliminate that Display panel is uneven, the equal homogeneous of Display panel of display terminal be promoted, so as to improve image quality.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of luminance compensation method of display panel, display panel and
The luminance compensating mechanism of display panel.
Background technique
In display terminal such as TFT-LCD (thin film transistor-liquid crystal display, film
Transistor liquid crystal display (TFT-LCD)) in, when picture shows identical gray scale voltage, due to TFT (Thin Film in processing procedure
Transistor, thin film transistor (TFT)) device has differences, the unequal reason of liquid crystal aligning will lead to the situation of picture unevenness, claim
Be Mura.There are various pattern forms by Mura, larger with its process batch correlation, and the appearance strong influence of Mura
The display effect of panel, causes ornamental value to be deteriorated.
Summary of the invention
The main purpose of the present invention is to provide a kind of luminance compensation method of display panel, display panel and display panels
Luminance compensating mechanism, it is intended to eliminate panel Mura, the equal homogeneous of Display panel of display terminal promoted, so as to improve image quality.
To achieve the above object, the present invention provides a kind of luminance compensation method of display panel, comprising the following steps:
Obtain the brightness value of each display subregion of display terminal；
Average brightness value is calculated according to the brightness value of each display subregion, and calculates the bright of each display subregion
The difference of angle value and the average brightness value, or each display brightness value for showing subregion is calculated by preset algorithm, and
Calculate the difference of the brightness value of the display brightness value and each display subregion；
According to the difference of calculating, the brightness for coping with each display subregion is compensated.
Optionally, the display brightness value that each display subregion is calculated by preset algorithm, and calculate described each
It is a display subregion brightness value and the difference of the display brightness value the step of include:
Obtain the brightness value of the light source sampled point of the predetermined quantity of each display subregion；
By the brightness value of the light source sampled point of the predetermined quantity by linear interpolation algorithm, it is calculated described each aobvious
Show the display brightness value of regional center (RC) point；
Calculate the difference between the display brightness value and corresponding brightness value of each display subregion.
Optionally, the difference according to calculating compensates the brightness for coping with each display subregion
Step includes:
When the difference is greater than predetermined value, the brightness of corresponding display subregion is reduced.
Optionally, the difference according to calculating compensates the brightness for coping with each display subregion
Step includes:
When the difference is less than predetermined value, increase the brightness of corresponding display subregion.
Optionally, the luminance compensation method of the display panel further include:
When the difference is equal to predetermined value, keep the brightness of corresponding display subregion constant.
Optionally, the step of brightness value of each display subregion for obtaining display terminal includes:
The brightness value of each display subregion is detected by optical detectors, and is stored in sequence controller.
To achieve the above object, the present invention also provides a kind of display panel, the display panel includes processor and deposits
Store up the luminance compensation program for the display panel that can be run in the processor and on the processor, wherein the display
The luminance compensation program of panel realizes the step of the luminance compensation method of display panel as described above when being executed by the processor
Suddenly.
To achieve the above object, the present invention also provides a kind of luminance compensating mechanism of display panel, the display panel
Luminance compensating mechanism includes at least one processor, and storage equipment, wherein the memory be stored with can by it is described at least
The computer executable instructions that one processor executes, the computer executable instructions are executed by least one described processor
When, so that at least one described processor is executed with the step in lower module:
Obtain module, the brightness value of each display subregion for obtaining display terminal；
Computing module for calculating average brightness value according to the brightness value of each display subregion, and calculates described each
The brightness value of a display subregion and the difference of the average brightness value, or each display subregion is calculated by preset algorithm
Display brightness value, and calculate the difference of the brightness value of the display brightness value and each display subregion；
Compensating module compensates the brightness for coping with each display subregion for the difference according to calculating.
Optionally, the computing module includes:
Acquiring unit, the brightness value of the light source sampled point of the predetermined quantity for obtaining each display subregion；
Computing unit, for by linear interpolation algorithm, calculating the brightness value of the light source sampled point of the predetermined quantity
Obtain the display brightness value of each display regional center (RC) point；
The computing unit is also used to calculate each display brightness value for showing subregion and corresponding brightness value
Between difference.
Optionally, the compensating module is further used for:
When the difference is greater than predetermined value, the brightness of corresponding display subregion is reduced；Or
When the difference is less than predetermined value, increase the brightness of corresponding display subregion；Or
When the difference is equal to predetermined value, keep the brightness of corresponding display subregion constant.
The luminance compensating mechanism of the luminance compensation method of display panel provided by the invention, display panel and display panel,
By obtaining the brightness value of each display subregion of display terminal, then calculated according to the brightness value of each display subregion flat
Equal brightness value, and the brightness value of each display subregion and the difference of the average brightness value are calculated, or pass through preset algorithm
The display brightness value of each display subregion is calculated, and calculates the brightness of the display brightness value and each display subregion
The difference of value compensates the brightness for coping with each display subregion finally according to the difference of calculating.In this way, can
To eliminate the panel Mura of the display terminal, the equal homogeneous of display of the panel is promoted, so as to improve display image quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the display terminal for the hardware running environment that the embodiment of the present invention is related to；
Fig. 2 is that the invention shows the flow diagrams of one embodiment of luminance compensation method of panel；
Fig. 3 is that the invention shows the panel Mura phenomenon of terminal and display subregion schematic diagrames；
Fig. 4 is that the invention shows the flow diagrams of the another embodiment of the luminance compensation method of panel；
Fig. 5 is that the invention shows the panels of terminal and composition of backboards schematic diagram；
Fig. 6 is that the invention shows the functional block diagrams of one embodiment of luminance compensating mechanism of panel.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
As shown in Figure 1, display terminal of the invention includes: processor 1001, such as CPU, user interface 1002, memory
1003, communication bus 1004.Wherein, communication bus 1004 is for realizing the connection communication between these components.User interface
1002 may include display screen (Display), input unit.Memory 1003 can be high speed RAM memory, be also possible to steady
Fixed memory (non-volatile memory), such as magnetic disk storage.Memory 1003 optionally can also be independently of
The storage device of aforementioned processor 1001.
It will be understood by those skilled in the art that display terminal structure shown in Fig. 1 does not constitute the limit to display terminal
It is fixed, it may include perhaps combining certain components or different component layouts than illustrating more or fewer components.
As shown in Figure 1, as may include that operating system, network are logical in a kind of memory 1003 of computer storage medium
Believe module, the luminance compensation program of Subscriber Interface Module SIM and display terminal.
In display terminal shown in Fig. 1, user interface 1002 be mainly used for receive user by touch display screen or
Input unit inputs instruction triggers user instruction, such as booting or shutdown；Processor 1001 is deposited in memory 1003 for calling
The luminance compensation program of storage, and execute following operation:
Obtain the brightness value of each display subregion of display terminal；
Average brightness value is calculated according to the brightness value of each display subregion, and calculates the bright of each display subregion
The difference of angle value and the average brightness value, or each display brightness value for showing subregion is calculated by preset algorithm, and
Calculate the difference of the brightness value of the display brightness value and each display subregion；
According to the difference of calculating, the brightness for coping with each display subregion is compensated.
Further, processor 1001 can call the luminance compensation program stored in memory 1003, also execute following
Operation:
Obtain the brightness value of the light source sampled point of the predetermined quantity of each display subregion；
By the brightness value of the light source sampled point of the predetermined quantity by linear interpolation algorithm, it is calculated described each aobvious
Show the display brightness value of regional center (RC) point；
Calculate the difference between the display brightness value and corresponding brightness value of each display subregion.
Further, processor 1001 can call the luminance compensation program stored in memory 1003, also execute following
Operation:
When the difference is greater than predetermined value, the brightness of corresponding display subregion is reduced.
Further, processor 1001 can call the luminance compensation program stored in memory 1003, also execute following
Operation:
When the difference is less than predetermined value, increase the brightness of corresponding display subregion.
Further, processor 1001 can call the luminance compensation program stored in memory 1003, also execute following
Operation:
When the difference is equal to predetermined value, keep the brightness of corresponding display subregion constant.
Further, processor 1001 can call the luminance compensation program stored in memory 1003, also execute following
Operation:
The brightness value of each display subregion is detected by optical detectors, and is stored in sequence controller.
Referring to Fig. 2, in one embodiment, the present invention provides a kind of luminance compensation method of display panel, including following step
It is rapid:
Step S1, the brightness value of each display subregion of display terminal is obtained；
In the present embodiment, the display terminal can be the various such as LCD TVs of the terminal with liquid crystal display, notes
This computer, mobile phone, tablet computer etc..It generallys use dynamic backlight modulation technique to control the backlight brightness, can reach energy conservation, promotion is shown
Show the image qualities effect such as contrast.
Dynamic backlight modulation technique mainly includes subregion backlight modulation and global backlight modulation.The present embodiment mainly for
It is subregion dynamic backlight modulation technique, it is assumed that N number of subregion of entire backlight source matrix the M subregion comprising the direction A and the direction B,
If Fig. 3 assumes M=6, N=4, M*N=24 backlight display subregion is counted, back light source brightness can be independent in each backlight display subregion
Drive control.Wherein, Panel indicates that panel, Panel block n indicate multiple display subregions.
The display terminal includes image capture apparatus and sequence controller (TCON) etc..Described image acquisition equipment can
To be optical detectors, when collecting the brightness value of each display subregion, it is sent to the sequence controller, through timing control
Device generates timing control signal and data-signal to drive liquid crystal display panel.Wherein, the sequence controller receive it is described each
When the brightness value of a display subregion, that is, saved.
Step S21, average brightness value is calculated according to the brightness value of each display subregion, and calculates each display
The difference of the brightness value of subregion and the average brightness value, or
In the present embodiment, N number of display subregion is detected by optical detectors, it is corresponding bright to obtain each display subregion
Angle value L1、L2……LN, and be sent in the sequence controller and stored.Then, the sequence controller calculates N number of point
The average brightness value in area:
La=(L1、L2……LN)/N。
Obtaining average brightness value LaAfterwards, the difference between the brightness value and the average brightness value of each display subregion is calculated
Value LN1, namely:
L11=L1-La, L21=L2-La... ..., LN1=LN-La。
Step S22, the display brightness value of each display subregion is calculated by preset algorithm, and it is bright to calculate the display
The difference of the brightness value of angle value and each display subregion；
In the present embodiment, the preset algorithm can be linear interpolation method.Certainly, in other embodiments, described default
Algorithm can also be other algorithms.Specifically, brightness control can be carried out to the light source point of each display subregion predetermined quantity,
The brightness value for representing the central point of each display subregion is obtained by the preset algorithm, and by the brightness value of the central point
Display brightness value as corresponding display subregion.After the display brightness value is calculated, then calculate each display subregion
Difference between display brightness value and corresponding brightness value.
For example, detecting the brightness value L of the light source point of each display subregion predetermined quantity by optical detectors1、L2……
LN, the corresponding brightness value of each display subregion is obtained, and be sent in the sequence controller and stored.It is false such as Fig. 5
If the four light source sampled point A in each region1、A2、A3、A 4The control for carrying out brightness, obtains especially by the preset algorithm
Represent the brightness value N of the central point A of each display subregion1、N2……Nm, and be sent in the sequence controller and stored.
Then, the sequence controller calculates the display brightness value N of each display subregion1、N2……NmWith corresponding intrinsic brilliance
Value P1、P2……PmBetween difference:
Q1=N1-P1, Q2=N2-P2... ... Qm=Nm-Pm。
It should be understood that the step S21 and S22 can select selection execution, the two has no particular order, is specifically chosen mode
It can reasonably select according to actual needs.
Step S3, according to the difference of calculating, the brightness for coping with each display subregion is compensated.
In the present embodiment, according to the difference being calculated, determine whether the brightness of each display subregion needs to compensate.
Specifically, the difference can be compared with a preset standard value, it is right if the difference is greater than the preset standard value
The brightness of current corresponding display subregion reduce the compensation of brightness；If the difference is less than the preset standard value, right
The brightness of current corresponding display subregion increase the compensation of brightness；If the difference is equal to the preset standard value, can
With keep corresponding display subregion brightness constant namely offset be 0.
When the difference is the difference L being calculated according to the step S21N1When, by the difference LN1With a pre- bidding
Quasi- value such as 0 is compared, if LN1> 0 then reduces the brightness of current corresponding display subregion n-quadrant；If LN1< 0 then increases and works as
The brightness of preceding corresponding display subregion n-quadrant；If LN1=0, then keep the brightness of current corresponding display subregion n-quadrant constant.
When the difference is the difference Q being calculated according to the step S22mWhen, by the difference QmWith a preset standard
Value such as 0 is compared, if Qm> 0 then reduces the brightness of m-th of light source sampled point；If Qm< 0 then increases by m-th of light source sampling
The brightness of point；If Qm=0, then keep the brightness of current m-th of light source sampled point constant.Pass through the brightness to light source sampled point
Compensation adjusts the brightness of corresponding current display subregion.
The present embodiment compensates the brightness of different zones by backlight, and the finally display of liquid crystal display panel can be made bright
Degree reaches unanimity, thus the equal homogeneous of the display for greatly promoting display panel.
The luminance compensation method of display panel provided by the invention, by obtain display terminal each display subregion it is bright
Then angle value calculates average brightness value according to the brightness value of each display subregion, and calculate each display subregion
The difference of brightness value and the average brightness value, or each display brightness value for showing subregion is calculated by preset algorithm,
And the difference of the brightness value of the display brightness value and each display subregion is calculated, finally according to the difference of calculating,
The brightness for coping with each display subregion is compensated.In this way, the panel Mura of the display terminal can be eliminated, promoted
The equal homogeneous of the display of the panel, so as to improve display image quality.
Referring to Fig. 4, in another embodiment, it is based on embodiment shown in Fig. 3, the step S22 includes:
Step S221, the brightness value of the light source sampled point of the predetermined quantity of each display subregion is obtained；
In the present embodiment, it is assumed that the predetermined quantity is 4, then can sample and click through to 4 light sources of each display subregion
Row brightness control, the pixel without each light source point to each display subregion calculate.So, it is possible to reduce when described
The calculating data volume of sequence controller, reduces its circuit design, to reduce element cost.
Step S222, the brightness value of the light source sampled point of the predetermined quantity is calculated by linear interpolation algorithm
The display brightness value of each display regional center (RC) point；
In the present embodiment, the subregion of panel and the subregion of backboard are corresponded, and the Mura in panel can reflect at the same time
It is mapped in backboard.As shown in figure 5, using Block N as signal.The reality of four light source points A1, A2, A3, A4 of Block N
Brightness can be sampled by optical detectors and is input in sequence controller, be compared with actual displayed brightness data, with adjustment
The backlight illumination of this four light source points.In order to promote the neat degree of panel again, it is necessary to adjust the back inside the n-quadrant Block
The brightness of light.But too many light source sampled point can improve the calculation amount of sequence controller, increase cost.Wherein, TCON is indicated
Timing Controller, sequence controller, Backlight indicate backlight.
Therefore, the present embodiment carries out sampling adjustment to the LED light source for including inside Block N.Assuming that packet inside Block N
Containing 6 LED light (i.e. 6 light source sampled points), then can be adopted when in order to calculate the brightness of the corresponding LED light of A point (central point)
With the algorithm of linear interpolation: the brightness of two points of A5, A6 is calculated using linear interpolation, its calculation formula is:
A5=A1+ (A3-A1) * (1/3), A6=A2+ (A4-A2) * (1/3)；
Wherein, 1/3 is the weighted value of A5, A6 for two Standard Sampling Points on a line.Therefore, available A point
Brightness value are as follows: A=A5+ (A6-A5) * (1/2).
The brightness value A for representing each display subregion is obtained by above-mentioned algorithm, and using brightness value A as corresponding aobvious
Show the display brightness value of subregion.
Step S223, the difference between the display brightness value and corresponding brightness value of each display subregion is calculated
Value.
In the present embodiment, it will be compared by the brightness value A calculated with corresponding intrinsic brilliance value, and calculate
Difference between the two, the sequence controller store this difference, then can adjust A point according to the luminance difference of storage
Backlight illumination.
The brightness of different zones is compensated by backlight, the final display brightness of liquid crystal display panel can be made to tend to one
It causes, thus the equal homogeneous of the display for greatly promoting panel.
In another embodiment, it is based on Fig. 3 or embodiment shown in Fig. 4, the step S3 further comprises:
When the difference is greater than predetermined value, the brightness of corresponding display subregion is reduced.
In the present embodiment, when the difference is greater than predetermined value, show currently to show that the brightness of subregion is relatively high, because
This, needs correspondence to compensate, then can reduce the brightness of corresponding display subregion.
In another embodiment, it is based on Fig. 2 or embodiment shown in Fig. 3, the step S3 further comprises:
When the difference is less than predetermined value, increase the brightness of corresponding display subregion.
In the present embodiment, when the difference is less than predetermined value, show currently to show that the brightness of subregion is relatively low, because
This, needs correspondence to compensate, then can increase the brightness of corresponding display subregion.
In another embodiment, it is based on Fig. 2 or embodiment shown in Fig. 3, after the step S2 further include:
When the difference is equal to predetermined value, keep the brightness of corresponding display subregion constant.
In the present embodiment, when the difference is equal to predetermined value, show currently to show that the brightness of subregion is relatively suitable, because
This, compensates without correspondence, that is, keeps the brightness of corresponding display subregion constant.
The present invention also provides a kind of display terminal, the display terminal includes display panel, and the display panel includes place
It manages device and is stored in the luminance compensation program that can be run in the processor and on the processor, wherein the brightness
Compensation program realizes the step of luminance compensation method of display panel as described above when being executed by the processor.
It is in one embodiment, described aobvious the present invention also provides a kind of luminance compensating mechanism 100 of display panel referring to Fig. 6
The luminance compensating mechanism 100 for showing panel includes:
Obtain module 10, the brightness value of each display subregion for obtaining display terminal；
In the present embodiment, the display terminal can be the various such as LCD TVs of the terminal with liquid crystal display, notes
This computer, mobile phone, tablet computer etc..It generallys use dynamic backlight modulation technique to control the backlight brightness, can reach energy conservation, promotion is shown
Show the image qualities effect such as contrast.
Dynamic backlight modulation technique mainly includes subregion backlight modulation and global backlight modulation.The present embodiment mainly for
It is subregion dynamic backlight modulation technique, it is assumed that N number of subregion of entire backlight source matrix the M subregion comprising the direction A and the direction B,
If Fig. 3 assumes M=6, N=4, M*N=24 backlight display subregion is counted, back light source brightness can be independent in each backlight display subregion
Drive control.Wherein, Panel indicates that panel, Panel block n indicate multiple display subregions.
The display terminal includes image capture apparatus and sequence controller (TCON) etc..Described image acquisition equipment can
To be optical detectors, when collecting the brightness value of each display subregion, it is sent to the sequence controller, through timing control
Device generates timing control signal and data-signal to drive liquid crystal display panel.Wherein, the sequence controller receive it is described each
When the brightness value of a display subregion, that is, saved.
Computing module 20, for calculating average brightness value according to the brightness value of each display subregion, and described in calculating
The brightness value of each display subregion and the difference of the average brightness value, or each display subregion is calculated by preset algorithm
Display brightness value, and calculate the display brightness value and it is described it is each display subregion brightness value difference；
In the present embodiment, N number of display subregion is detected by optical detectors, it is corresponding bright to obtain each display subregion
Angle value L1、L2……LN, and be sent in the sequence controller and stored.Then, the sequence controller calculates N number of point
The average brightness value in area:
La=(L1、L2……LN)/N。
Obtaining average brightness value LaAfterwards, the difference between the brightness value and the average brightness value of each display subregion is calculated
Value LN1, namely:
L11=L1-La, L21=L2-La... ..., LN1=LN-La。
In another embodiment, the preset algorithm can be linear interpolation method.Certainly, in other embodiments, described
Preset algorithm can also be other algorithms.Specifically, brightness can be carried out to the light source point of each display subregion predetermined quantity
Control obtains the brightness value for representing the central point of each display subregion by the preset algorithm, and by the central point
Display brightness value of the brightness value as corresponding display subregion.After the display brightness value is calculated, then calculate each display
Difference between the display brightness value and corresponding brightness value of subregion.
For example, detecting the brightness value L of the light source point of each display subregion predetermined quantity by optical detectors1、L2……
LN, the corresponding brightness value of each display subregion is obtained, and be sent in the sequence controller and stored.It is false such as Fig. 5
If the four light source sampled point A in each region1、A2、A3、A 4The control for carrying out brightness, obtains especially by the preset algorithm
Represent the brightness value N of the central point A of each display subregion1、N2……Nm, and be sent in the sequence controller and stored.
Then, the sequence controller calculates the display brightness value N of each display subregion1、N2……NmWith corresponding intrinsic brilliance
Value P1、P2……PmBetween difference:
Q1=N1-P1, Q2=N2-P2... ... Qm=Nm-Pm。
Compensating module 30, for the difference according to calculating, to should be mended to the brightness of each display subregion
It repays.
In the present embodiment, according to the difference being calculated, determine whether the brightness of each display subregion needs to compensate.
Specifically, the difference can be compared with a preset standard value, it is right if the difference is greater than the preset standard value
The brightness of current corresponding display subregion reduce the compensation of brightness；If the difference is less than the preset standard value, right
The brightness of current corresponding display subregion increase the compensation of brightness；If the difference is equal to the preset standard value, can
With keep corresponding display subregion brightness constant namely offset be 0.
When the difference is to calculate average brightness value according to the brightness value of each display subregion, and calculate described each
The difference L that the difference of the brightness value and the average brightness value that show subregion is calculatedN1When, by the difference LN1It is pre- with one
If standard value such as 0 is compared, if LN1> 0 then reduces the brightness of current corresponding display subregion n-quadrant；If LN1< 0, then increase
The brightness of corresponding display subregion n-quadrant before sovolin；If LN1=0, then keep the brightness of current corresponding display subregion n-quadrant not
Become.
When the difference is to calculate the display brightness value of each display subregion by preset algorithm, and calculate described aobvious
Show the difference Q that the difference of the brightness value of brightness value and each display subregion is calculatedmWhen, by the difference QmIt is pre- with one
If standard value such as 0 is compared, if Qm> 0 then reduces the brightness of m-th of light source sampled point；If Qm< 0 then increases by m-th of light
The brightness of source sampling point；If Qm=0, then keep the brightness of current m-th of light source sampled point constant.By to light source sampled point
The compensation of brightness adjusts the brightness of corresponding current display subregion.
The present embodiment compensates the brightness of different zones by backlight, and the finally display of liquid crystal display panel can be made bright
Degree reaches unanimity, thus the equal homogeneous of the display for greatly promoting display panel.
The luminance compensating mechanism of display panel provided by the invention, by obtain display terminal each display subregion it is bright
Then angle value calculates average brightness value according to the brightness value of each display subregion, and calculate each display subregion
The difference of brightness value and the average brightness value, or each display brightness value for showing subregion is calculated by preset algorithm,
And the difference of the brightness value of the display brightness value and each display subregion is calculated, finally according to the difference of calculating,
The brightness for coping with each display subregion is compensated.In this way, the panel Mura of the display terminal can be eliminated, promoted
The equal homogeneous of the display of the panel, so as to improve display image quality.
In another embodiment, the computing module includes:
Acquiring unit, the brightness value of the light source sampled point of the predetermined quantity for obtaining each display subregion；
In the present embodiment, it is assumed that the predetermined quantity is 4, then can sample and click through to 4 light sources of each display subregion
Row brightness control, the pixel without each light source point to each display subregion calculate.So, it is possible to reduce when described
The calculating data volume of sequence controller, reduces its circuit design, to reduce element cost.
Computing unit, for by linear interpolation algorithm, calculating the brightness value of the light source sampled point of the predetermined quantity
Obtain the display brightness value of each display regional center (RC) point；
In the present embodiment, the subregion of panel and the subregion of backboard are corresponded, and the Mura in panel can reflect at the same time
It is mapped in backboard.As shown in figure 5, using Block N as signal.The reality of four light source points A1, A2, A3, A4 of Block N
Brightness can be sampled by optical detectors and is input in sequence controller, be compared with actual displayed brightness data, with adjustment
The backlight illumination of this four light source points.In order to promote the neat degree of panel again, it is necessary to adjust the back inside the n-quadrant Block
The brightness of light.But too many light source sampled point can improve the calculation amount of sequence controller, increase cost.Wherein, TCON is indicated
Timing Controller, sequence controller, Backlight indicate backlight.
Therefore, the present embodiment carries out sampling adjustment to the LED light source for including inside Block N.Assuming that packet inside Block N
Containing 6 LED light (i.e. 6 light source sampled points), then can be adopted when in order to calculate the brightness of the corresponding LED light of A point (central point)
With the algorithm of linear interpolation: the brightness of two points of A5, A6 is calculated using linear interpolation, its calculation formula is:
A5=A1+ (A3-A1) * (1/3), A6=A2+ (A4-A2) * (1/3)；
Wherein, 1/3 is the weighted value of A5, A6 for two Standard Sampling Points on a line.Therefore, available A point
Brightness value are as follows: A=A5+ (A6-A5) * (1/2).
The brightness value A for representing each display subregion is obtained by above-mentioned algorithm, and using brightness value A as corresponding aobvious
Show the display brightness value of subregion.
The computing unit is also used to calculate each display brightness value for showing subregion and corresponding brightness value
Between difference.
In the present embodiment, it will be compared by the brightness value A calculated with corresponding intrinsic brilliance value, and calculate
Difference between the two, the sequence controller store this difference, then can adjust A point according to the luminance difference of storage
Backlight illumination.
The brightness of different zones is compensated by backlight, the final display brightness of liquid crystal display panel can be made to tend to one
It causes, thus the equal homogeneous of the display for greatly promoting panel.
In another embodiment, the compensating module is further used for:
When the difference is greater than predetermined value, the brightness of corresponding display subregion is reduced；Or
When the difference is less than predetermined value, increase the brightness of corresponding display subregion；Or
When the difference is equal to predetermined value, keep the brightness of corresponding display subregion constant.
In the present embodiment, when the difference is greater than predetermined value, show currently to show that the brightness of subregion is relatively high, because
This, needs correspondence to compensate, then can reduce the brightness of corresponding display subregion.In the present embodiment, it is greater than in the difference
When predetermined value, show currently to show that the brightness of subregion is relatively high, therefore, it is necessary to correspondences to compensate, then can reduce correspondence
Display subregion brightness.When the difference is equal to predetermined value, show currently to show that the brightness of subregion is relatively suitable, therefore,
It is compensated without correspondence, that is, keeps the brightness of corresponding display subregion constant.
The present invention also provides a kind of computer readable storage medium, brightness is stored on the computer readable storage medium
Compensation program program, the luminance compensation program program realize that the brightness of display panel as described above is mended when being executed by processor
The step of compensation method.
The above is only alternative embodiments of the invention, are not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of luminance compensation method of display panel, which is characterized in that the luminance compensation method of the display panel include with
Lower step:
Obtain the brightness value of each display subregion of display terminal；
Average brightness value is calculated according to the brightness value of each display subregion, and calculates the brightness value of each display subregion
With the difference of the average brightness value, or the display brightness value of each display subregion is calculated by preset algorithm, and calculated
The difference of the brightness value of the display brightness value and each display subregion；
According to the difference of calculating, the brightness for coping with each display subregion is compensated.
2. the luminance compensation method of display panel as described in claim 1, which is characterized in that described to be calculated by preset algorithm
The display brightness value of each display subregion, and calculate each brightness value for showing subregion and the display brightness value
The step of difference includes:
Obtain the brightness value of the light source sampled point of the predetermined quantity of each display subregion；
By the brightness value of the light source sampled point of the predetermined quantity by linear interpolation algorithm, each display point is calculated
The display brightness value of district center point；
Calculate the difference between the display brightness value and corresponding brightness value of each display subregion.
3. the luminance compensation method of display panel as claimed in claim 1 or 2, which is characterized in that the institute according to calculating
Difference is stated, includes: to the step of each brightness for showing subregion compensates is coped with
When the difference is greater than predetermined value, the brightness of corresponding display subregion is reduced.
4. the luminance compensation method of display panel as claimed in claim 1 or 2, which is characterized in that the institute according to calculating
Difference is stated, includes: to the step of each brightness for showing subregion compensates is coped with
When the difference is less than predetermined value, increase the brightness of corresponding display subregion.
5. the luminance compensation method of display panel as claimed in claim 1 or 2, which is characterized in that the display panel it is bright
Spend compensation method further include:
When the difference is equal to predetermined value, keep the brightness of corresponding display subregion constant.
6. the luminance compensation method of display panel as described in claim 1, which is characterized in that described to obtain each of display terminal
It is a display subregion brightness value the step of include:
The brightness value of each display subregion is detected by optical detectors, and is stored in sequence controller.
7. a kind of display panel, which is characterized in that the display panel includes processor and is stored in the processor simultaneously
The luminance compensation program for the display panel that can be run on the processor, wherein the luminance compensation program of the display panel
The step of the luminance compensation method such as display panel described in any one of claims 1 to 6 is realized when being executed by the processor
Suddenly.
8. a kind of luminance compensating mechanism of display panel, which is characterized in that the luminance compensating mechanism of the display panel includes extremely
A few processor, and storage equipment, wherein the memory is stored with the meter that can be executed by least one described processor
Calculation machine executable instruction, when the computer executable instructions are executed by least one described processor, so that described at least one
A processor is executed with the step in lower module:
Obtain module, the brightness value of each display subregion for obtaining display terminal；
Computing module for calculating average brightness value according to the brightness value of each display subregion, and calculates described each aobvious
Show the brightness value of subregion and the difference of the average brightness value, or calculates the display of each display subregion by preset algorithm
Brightness value, and calculate the difference of the brightness value of the display brightness value and each display subregion；
Compensating module compensates the brightness for coping with each display subregion for the difference according to calculating.
9. the luminance compensating mechanism of display panel as claimed in claim 8, which is characterized in that the computing module includes:
Acquiring unit, the brightness value of the light source sampled point of the predetermined quantity for obtaining each display subregion；
Computing unit, for the brightness value of the light source sampled point of the predetermined quantity by linear interpolation algorithm, to be calculated
The display brightness value of each display regional center (RC) point；
The computing unit is also used to calculate between each display brightness value and corresponding brightness value for showing subregion
Difference.
10. the luminance compensating mechanism of display panel as claimed in claim 8 or 9, which is characterized in that the compensating module is into one
Step is used for:
When the difference is greater than predetermined value, the brightness of corresponding display subregion is reduced；Or
When the difference is less than predetermined value, increase the brightness of corresponding display subregion；Or
When the difference is equal to predetermined value, keep the brightness of corresponding display subregion constant.
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