CN105632434B - Determine the method and device of the driving voltage of the sub-pixel of liquid crystal display panel - Google Patents
Determine the method and device of the driving voltage of the sub-pixel of liquid crystal display panel Download PDFInfo
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- CN105632434B CN105632434B CN201511028417.XA CN201511028417A CN105632434B CN 105632434 B CN105632434 B CN 105632434B CN 201511028417 A CN201511028417 A CN 201511028417A CN 105632434 B CN105632434 B CN 105632434B
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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
- G09G3/3622—Control of matrices with row and column drivers using a passive matrix
- G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
- G09G3/364—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with use of subpixels
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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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- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention provides a kind of method and device of the driving voltage of the sub-pixel of determining liquid crystal display panel, and the sub-pixel includes that area ratio is a：The boss's pixel region and sub-sub-pixel region, method of b include：The first driving voltage when boss's pixel region of the sub-pixel of liquid crystal display panel being made to show each first theoretical brightness value is obtained respectively；The second driving voltage when the sub-sub-pixel region of sub-pixel being made to show each second theoretical brightness value is obtained respectively；Obtain third theory brightness value；It determines so that sum is equal to the first theoretical brightness value of third theory brightness value and is combined with meet predetermined condition in the combination of the second theory brightness value one；Driving voltage of corresponding first driving voltage of the first theory brightness value as boss's pixel region in a determining combination is obtained, driving voltage of corresponding second driving voltage of the second theory brightness value as sub-sub-pixel region in one combination is obtained.The wide viewing angle colour cast of liquid crystal display panel can be effectively improved according to the present invention.
Description
Technical field
The invention belongs to technical field of liquid crystal display, more specifically to a kind of sub-pixel of determining liquid crystal display panel
The method and device of driving voltage.
Background technology
In recent years, liquid crystal display (LCD) it is small with its, it is light-weight, display quality it is high the advantages that gradually instead of with
Past cathode-ray picture tube (CRT) display.The picture shown by liquid crystal display panel in liquid crystal display is arranged by many arrays
The pixel of row is constituted, each pixel usually by showing that the sub-pixel of a variety of colors forms respectively, shown by each sub-pixel
Brightness by liquid crystal display backlight module brightness and the liquid crystal display panel sub-pixel grayscale codetermine.Existing liquid
In the driving method of crystal display, most common method is to maintain a constant brightness using the brightness of backlight module, according to input
Image data, respectively driving voltage in different sizes drive the liquid crystal in each sub-pixel of the liquid crystal display panel to be revolved
Turn, to determine the light transmittance (that is, brightness) of each sub-pixel by the rotation angle of liquid crystal molecule, is shown with reaching grayscale
With the purpose of imaging.
With the continuous application of liquid crystal display, requirement of the people to the visual angle of liquid crystal display is also gradually increased, as a result,
The bigger wide-angle liquid crystal display of visible angle is had developed, for example, VA LCD etc..But due to this wide viewing angle liquid
For the liquid crystal display panel of crystal display using the liquid crystal vertically rotated, the diversity ratio of liquid crystal molecule birefringence is larger, leads to big visual angle
Under colour cast (color shift) problem than more serious so that the brightness of the liquid crystal display panel of VA LCD seen from different perspectives
It differs greatly, causes distortion.2D1G technologies are the common technologies for the colour cast for solving the problems, such as VA LCD at present.Here, 2D1G
Technology refers to sub-pixel being divided into boss's pixel region M and sub-sub-pixel region S, and pass through boss's pixel region to sub-pixel
M and sub-sub-pixel region S applies driving voltage to make sub-pixel show corresponding grayscale respectively.In general, according to sub-pixel
The difference for the driving voltage that boss's pixel region M and sub-sub-pixel region S applies, improvement of the 2D1G technologies to the colour cast of VALCD
Effect is different.
Invention content
In order to overcome the deficiencies of the prior art, colour cast can be effectively improved the exemplary embodiment of the present invention provides a kind of
Determine the method and device of the driving voltage of the sub-pixel of liquid crystal display panel.
On the one hand exemplary embodiment of the present invention provides a kind of side of the driving voltage of the sub-pixel of determining liquid crystal display panel
Method, each pixel of the liquid crystal display panel include the sub-pixel of multiple colors, and each sub-pixel includes that area ratio is a：The boss of b
Pixel region and sub-sub-pixel region, which is characterized in that the method includes：A) obtaining respectively makes the sub- picture of the liquid crystal display panel
Boss's pixel region of element shows the first driving voltage when each first theoretical brightness value, wherein each first theoretical brightness
Value is theoretical brightness value of the boss's pixel region in each grayscale；B) obtaining respectively makes the sub-sub-pixel of the sub-pixel
Region shows the second driving voltage when each second theoretical brightness value, wherein each second theoretical brightness value is the second son
Theoretical brightness value of the pixel region in each grayscale；C) third theory brightness value is obtained, wherein third theory brightness value is institute
State theoretical brightness value of the sub-pixel in predetermined grayscale；D) according to the described each first theoretical brightness value, each second reason
By brightness value and the third theory brightness value, determine so that sum is equal to the first theory of the third theory brightness value
Brightness value is combined with meet predetermined condition in the combination of the second theoretical brightness value one；E) it obtains in a determining combination
Driving voltage of first driving voltage as boss's pixel region corresponding to first theoretical brightness value, obtains determining one
Driving voltage of the second driving voltage corresponding to the second theoretical brightness value as the sub-sub-pixel region in a combination.
Optionally, the predetermined condition is so that L1/a-L2/ b is maximum, wherein L1For the first theoretical brightness value, L2It is
Two theoretical brightness values.
Optionally, step a) includes：A1 boss's pixel region of the sub-pixel of the liquid crystal display panel) is measured in the boss
The maximum brightness value when maximum drive voltage of pixel region；A2) according to the maximum brightness of boss's pixel region of measurement
It is worth to the gamma curve of boss's pixel region, and each first theoretical brightness is obtained respectively using the gamma curve
Value；A3 the driving voltage of boss's pixel region) is adjusted, so that boss's pixel region shows that each first is theoretical successively
Brightness value, to respectively obtain the first driving voltage when boss's pixel region being made to show each first theoretical brightness value.
Optionally, the expression formula of the gamma curve is：L1(i)=L1m×(i/m)γ,
Wherein, γ is predetermined gamma value, L1(i) it is theoretical brightness value of the boss's pixel region in grayscale i, L1mFor
The maximum brightness value of the boss's pixel region measured, i ∈ [t, m], t are minimum gray, and m is maximum gray.
Optionally, step b) includes：B1 the sub-sub-pixel region of the sub-pixel) is measured in the sub-sub-pixel region
Maximum brightness value when maximum drive voltage；B2 it) is worth to according to the maximum brightness in the sub-sub-pixel region of measurement described
The gamma curve in sub-sub-pixel region, and each second theoretical brightness value is obtained respectively using the gamma curve；B3 institute) is adjusted
The driving voltage in sub-sub-pixel region is stated, so that the sub-sub-pixel region shows each second theoretical brightness value successively, to
Respectively obtain the second driving voltage when the sub-sub-pixel region being made to show each second theoretical brightness value.
Optionally, the expression formula of the gamma curve is：L2(j)=L2m×(j/m)γ,
Wherein, γ is predetermined gamma value, L2(j) it is theoretical brightness value of the sub-sub-pixel region in grayscale j, L2mFor
The maximum brightness value in the sub-sub-pixel region measured, j ∈ [t, m], t are minimum gray, and m is maximum gray.
Optionally, step c) includes：C1 boss pixel region and the son of the sub-pixel in the sub-pixel) are measured
The maximum brightness value when driving voltage in the sub-sub-pixel region of pixel is respectively respective maximum drive voltage；C2) according to survey
The maximum brightness of the sub-pixel of amount is worth to the gamma curve of the sub-pixel, and obtains third using the gamma curve
Theoretical brightness value.
Optionally, the expression formula of the gamma curve is：L3(k)=L3m×(k/m)γ,
Wherein, γ is predetermined gamma value, L3(k) it is theoretical brightness value of the sub-pixel in grayscale k, L3mFor measurement
The maximum brightness value of the sub-pixel, k ∈ [t, m], t are minimum gray, and m is maximum gray.
Optionally, γ=2.2.
The another aspect of exemplary embodiment of the present invention provides a kind of driving voltage of the sub-pixel of determining liquid crystal display panel
Device, each pixel of the liquid crystal display panel includes the sub-pixel of multiple colors, each sub-pixel include area ratio be a：B's
Boss's pixel region and sub-sub-pixel region, which is characterized in that described device includes：First driving voltage acquiring unit, respectively
Obtain the first driving electricity when boss's pixel region of the sub-pixel of the liquid crystal display panel being made to show each first theoretical brightness value
Pressure, wherein each first theoretical brightness value is theoretical brightness value of the boss's pixel region in each grayscale；Second driving
Voltage acquisition unit obtains second when the sub-sub-pixel region of the sub-pixel being made to show each second theoretical brightness value respectively
Driving voltage, wherein each second theoretical brightness value is theoretical brightness value of the sub-sub-pixel region in each grayscale；The
Three theoretical brightness value acquiring units, obtain third theory brightness value, wherein third theory brightness value is the sub-pixel predetermined
Theoretical brightness value when grayscale；Determination unit is combined, according to each first driving obtained with the first driving voltage acquiring unit
The corresponding each first theoretical brightness value of voltage, each second driving voltage with the acquisition of the second driving voltage acquiring unit
The third theory brightness value that corresponding each second theoretical brightness value and third theory brightness value obtain, determines so that being added
The sum of be equal to the first theoretical brightness value of the third theory brightness value and meet predetermined item with the combination of the second theory brightness value
One combination of part；Driving voltage acquiring unit obtains the first theoretical brightness in the combination that combination determination unit determines
Driving voltage of the first corresponding driving voltage of value as boss's pixel region, obtains second in one combination
Driving voltage of second driving voltage as the sub-sub-pixel region corresponding to theoretical brightness value.
Optionally：The predetermined condition is so that L1/a-L2/ b is maximum, wherein L1For the first theoretical brightness value, L2It is
Two theoretical brightness values.
Optionally, the first driving voltage acquiring unit includes：Boss's pixel region maximum brightness value obtains subelement, obtains
Boss's pixel region of the sub-pixel of the liquid crystal display panel is most light in the maximum drive voltage of boss's pixel region
Angle value；First theoretical brightness value determination subelement, obtains according to boss's pixel region maximum brightness value described in subelement acquisition
The maximum brightness of boss's pixel region is worth to the gamma curve of boss's pixel region, and is distinguished using the gamma curve
Determine each first theoretical brightness value；First driving voltage obtains subelement, and it is each that acquisition makes boss's pixel region show
The first driving voltage when the first theoretical brightness value.
Optionally, the expression formula of the gamma curve is：L1(i)=L1m×(i/m)γ,
Wherein, γ is predetermined gamma value, L1(i) it is theoretical brightness value of the boss's pixel region in grayscale i, L1mFor
The maximum brightness value of the boss's pixel region measured, i ∈ [t, m], t are minimum gray, and m is maximum gray.
Optionally, the second driving voltage acquiring unit includes：Sub-sub-pixel region maximum brightness value obtains subelement, obtains
Maximum brightness value of the sub-sub-pixel region of the sub-pixel in the maximum drive voltage in the sub-sub-pixel region；Second reason
By brightness value determination subelement, the sub-sub-pixel region that subelement obtains is obtained according to sub-sub-pixel region maximum brightness value
Maximum brightness be worth to the gamma curve in the sub-sub-pixel region, and determine each second respectively using the gamma curve
Theoretical brightness value；Second driving voltage obtains subelement, and acquisition makes the sub-sub-pixel region show each second theoretical brightness
The second driving voltage when value.
Optionally, the expression formula of the gamma curve is：L2(j)=L2m×(j/m)γ,
Wherein, γ is predetermined gamma value, L2(j) it is theoretical brightness value of the sub-sub-pixel region in grayscale j, L2mFor
The maximum brightness value in the sub-sub-pixel region measured, j ∈ [t, m], t are minimum gray, and m is maximum gray.
Optionally, third theory brightness value acquiring unit includes：Sub-pixel maximum brightness value obtains subelement, described in acquisition
Driving voltage of the sub-pixel in boss's pixel region of the sub-pixel and the sub-sub-pixel region of the sub-pixel is respectively each
From maximum drive voltage when maximum brightness value；Third theory brightness value determination subelement, according to sub-pixel maximum brightness value
The maximum brightness for obtaining the sub-pixel that subelement obtains is worth to the gamma curve of the sub-pixel, and utilizes the gamma
Curve determines third theory brightness value.
Optionally, the expression formula of the gamma curve is：L3(k)=L3m×(k/m)γ,
Wherein, γ is predetermined gamma value, L3(k) it is theoretical brightness value of the sub-pixel in grayscale k, L3mFor measurement
The maximum brightness value of the sub-pixel, k ∈ [t, m], t are minimum gray, and m is maximum gray.
Optionally, γ=2.2.
The method of the driving voltage of the sub-pixel for the determination liquid crystal display panel that exemplary embodiment according to the present invention provides and
Device can effectively improve the wide viewing angle colour cast of liquid crystal display panel.
Part in following description is illustrated into the other aspect and/or advantage of the present invention, some is by retouching
It states and will be apparent, or the implementation of the present invention can be passed through and learnt.
Description of the drawings
By the description to embodiment carried out below in conjunction with the accompanying drawings, above-mentioned and/or other objects and advantages of the invention
It will become apparent, wherein：
Fig. 1 is the method for the driving voltage for the sub-pixel for showing determining liquid crystal display panel according to an exemplary embodiment of the present invention
Flow chart；
Fig. 2 is the boss's pixel for showing the sub-pixel according to an exemplary embodiment of the present invention for obtaining make liquid crystal display panel respectively
The flow chart of the step of the first driving voltage when region shows each first theoretical brightness value；
Fig. 3 is the sub-sub-pixel for showing the sub-pixel according to an exemplary embodiment of the present invention for obtaining make liquid crystal display panel respectively
The flow chart of the step of the second driving voltage when region shows each second theoretical brightness value；
Fig. 4 is flow chart the step of showing acquisition third theory brightness value according to an exemplary embodiment of the present invention；
Fig. 5 is the device of the driving voltage for the sub-pixel for showing determining liquid crystal display panel according to an exemplary embodiment of the present invention
Block diagram；
Fig. 6 is the block diagram for showing the first driving voltage acquiring unit according to an exemplary embodiment of the present invention；
Fig. 7 is the block diagram for showing the second driving voltage acquiring unit according to an exemplary embodiment of the present invention；
Fig. 8 is the block diagram for showing third theory brightness value acquiring unit according to an exemplary embodiment of the present invention.
Specific implementation mode
Exemplary embodiment of the present invention will now be described in detail, examples of the embodiments are shown in the accompanying drawings, wherein phase
Same label indicates identical part.It will illustrate the embodiment by referring to accompanying drawing below, to explain the present invention.
Fig. 1 is the method for the driving voltage for the sub-pixel for showing determining liquid crystal display panel according to an exemplary embodiment of the present invention
Flow chart.Each pixel of the liquid crystal display panel includes the sub-pixel of multiple colors, and each sub-pixel includes that area ratio is a：b
Boss's pixel region and sub-sub-pixel region.
As shown in Figure 1, in step S101, obtain makes boss's pixel region of the sub-pixel of the liquid crystal display panel show respectively
The first driving voltage when each first theoretical brightness value.Here, the boss's pixel region for only driving sub-pixel, described in acquisition
Boss's pixel region shows the first driving voltage when each first theoretical brightness value.Each first theoretical brightness value is the master
Theoretical brightness value of the subpixel area in each grayscale.Each grayscale is each value in the value range of grayscale.
According to the difference of liquid crystal display panel, the value range of grayscale is different.When liquid crystal display panel is 8 bit liquid crystal display panel, ash
The value range of rank is [0,255], then each first theoretical brightness value is that boss's pixel region is interior for [0,255] in grayscale
Each value when theoretical brightness value.When liquid crystal display panel is 10 bit liquid crystal display panel, the value range of grayscale is [0,1023],
Then each first theoretical brightness value is theoretical brightness of the boss's pixel region when grayscale is each value in [0,1023]
Value.
Here, can respectively be obtained by existing various methods makes boss's pixel region show that each first is theoretical bright
The first driving voltage when angle value.
As an example, obtaining the first driving when boss's pixel region being made to show each first theoretical brightness value respectively
The step of voltage, is as shown in Figure 2.
Fig. 2 is the boss's pixel for showing the sub-pixel according to an exemplary embodiment of the present invention for obtaining make liquid crystal display panel respectively
The flow chart of the step of the first driving voltage when region shows each first theoretical brightness value.
As shown in Fig. 2, in step S201, boss's pixel region of the sub-pixel of liquid crystal display panel is measured in boss's pixel
The maximum brightness value when maximum drive voltage in region.Here, the size of the maximum drive voltage of boss's pixel region with
The characteristic of boss's pixel region is related, can select a driving voltage as boss's pixel region as needed
Maximum drive voltage.It is appreciated that existing various methods can be used to measure the maximum brightness value of boss's pixel region.
It will be understood by those skilled in the art that measurement here is carried out in the case where facing liquid crystal display panel, also, aftermentioned interior
Rong Zhong, it is unspecified be " facing " or " strabismus " in the case of, each mean " facing ".
In step S202, boss's pixel region is worth to according to the maximum brightness of boss's pixel region of measurement
Gamma curve, and obtain each first theoretical brightness value respectively using the gamma curve.Here, boss's pixel region
The expression formula of gamma curve be：
L1(i)=L1m×(i/m)γ (1)
Here, γ is predetermined gamma value, predetermined gamma value can be determined according to the characteristic of liquid crystal display panel, it is preferable that γ
=2.2.L1(i) it is theoretical brightness value of the boss's pixel region in grayscale i, that is, the first theoretical brightness value.L1mTo measure
Boss's pixel region maximum brightness value, i ∈ [t, m], t are minimum gray, and m is maximum gray.Here, in grayscale
When value range is [0,255], t 0, m 255.When the value range of grayscale is [0,1023], t 0, m 1023.
It is calculated, can be obtained by substituting into above-mentioned formula (1) each grayscale in value range [t, m] respectively as i
To each first theoretical brightness value.
Then, according to the obtained by above-mentioned formula (1) each first theoretical brightness value, institute is determined respectively using examination survey method
State the first driving voltage.
In step S203, the driving voltage of boss's pixel region is adjusted, so that boss's pixel region is shown successively
Show each first theoretical brightness value, when so that boss's pixel region is shown each first theoretical brightness value to respectively obtain
First driving voltage.
In step S102, when acquisition makes the sub-sub-pixel region of the sub-pixel show each second theoretical brightness value respectively
The second driving voltage.Here, only drive sub-pixel sub-sub-pixel region, with obtain the sub-sub-pixel region show it is each
The second driving voltage when the second theoretical brightness value.Each second theoretical brightness value is the sub-sub-pixel region in each grayscale
When theoretical brightness value.
Here, can respectively be obtained by existing various methods makes the sub-sub-pixel region show that each second is theoretical bright
The second driving voltage when angle value.
As an example, obtaining the second driving when the sub-sub-pixel region being made to show each second theoretical brightness value respectively
The step of voltage, is as shown in Figure 3.
Fig. 3 is the sub-sub-pixel for showing the sub-pixel according to an exemplary embodiment of the present invention for obtaining make liquid crystal display panel respectively
The flow chart of the step of the second driving voltage when region shows each second theoretical brightness value.
As shown in figure 3, in step S301, the sub-sub-pixel region of the sub-pixel of liquid crystal display panel is measured in the sub-sub-pixel
The maximum brightness value when maximum drive voltage in region.Here, the size of the maximum drive voltage in the sub-sub-pixel region with
The characteristic in the sub-sub-pixel region is related, can select a driving voltage as the sub-sub-pixel region as needed
Maximum drive voltage.It is appreciated that existing various methods can be used to measure the maximum brightness value in the sub-sub-pixel region.
In step S302, the sub-sub-pixel region is worth to according to the maximum brightness in the sub-sub-pixel region of measurement
Gamma curve, and obtain each second theoretical brightness value respectively using the gamma curve.Here, the sub-sub-pixel region
The expression formula of gamma curve be：
L2(j)=L2m×(j/m)γ (2)
Here, γ is predetermined gamma value, predetermined gamma value can be determined according to the characteristic of liquid crystal display panel, it is preferable that γ
=2.2.L2(j) it is theoretical brightness value of the sub-sub-pixel region in grayscale j, that is, the second theoretical brightness value.L2mTo measure
The sub-sub-pixel region maximum brightness value, j ∈ [t, m].
It is calculated, can be obtained by substituting into above-mentioned formula (2) each grayscale in value range [t, m] respectively as j
To each second theoretical brightness value.
Then, according to the obtained by above-mentioned formula (2) each second theoretical brightness value, institute is determined respectively using examination survey method
State the second driving voltage.
In step S303, the driving voltage in the sub-sub-pixel region is adjusted, so that the sub-sub-pixel region is shown successively
Show each second theoretical brightness value, when so that the sub-sub-pixel region is shown each second theoretical brightness value to respectively obtain
Second driving voltage.
In step S103, third theory brightness value is obtained.Here, third theory brightness value is the sub-pixel in predetermined ash
Theoretical brightness value when rank, predetermined grayscale can be any one grayscale in the value range of grayscale.
Third theory brightness value can be obtained by existing various methods.As an example, obtaining third theory brightness value
The step of it is as shown in Figure 4.
Fig. 4 is flow chart the step of showing acquisition third theory brightness value according to an exemplary embodiment of the present invention.
As shown in figure 4, in step S401, measure the sub-pixel of liquid crystal display panel in boss's pixel region of the sub-pixel and
The maximum brightness value when driving voltage in the sub-sub-pixel region of the sub-pixel is respectively respective maximum drive voltage.That is,
Respective maximum drive electricity is applied to the sub-sub-pixel region of boss's pixel region of the sub-pixel and the sub-pixel simultaneously
Pressure, the brightness value for measuring the sub-pixel at this time is the maximum brightness value of the sub-pixel.It here, can be by existing various
Method measures the maximum brightness value.
As an example, boss's pixel region can also be measured respectively and the sub-sub-pixel region is in driving voltage
Brightness value when respective maximum drive voltage, by the second son of the brightness value and measurement of boss's pixel region of measurement
The added luminance of pixel region and obtain the maximum brightness value of the sub-pixel.
In step S402, the gamma curve of the sub-pixel is worth to according to the maximum brightness of the sub-pixel of measurement,
And obtain third theory brightness value using the gamma curve.Here, the expression formula of the gamma curve of the sub-pixel is：
L3(k)=L3m×(k/m)γ (3)
Here, γ is predetermined gamma value, predetermined gamma value can be determined according to the characteristic of liquid crystal display panel, it is preferable that γ
=2.2.L3(k) it is theoretical brightness value of the sub-pixel in grayscale k, L3mFor the maximum brightness of the sub-pixel of measurement
Value, k ∈ [t, m].
It is calculated by the way that predetermined grayscale to be used as in the above-mentioned formula (3) of k substitutions, third theory brightness value can be obtained.
In step S104, according to each first theoretical brightness value in step S101, each second in step S102 manages
The third theory brightness value obtained by brightness value and step S103 determines so that sum is equal to the third theory brightness value
The first theoretical brightness value combined with meet predetermined condition in the combination of the second theory brightness value one.
As an example, determining the described each first theoretical brightness value and the described each second theoretical added luminance etc. first
In the combination of the first theoretical brightness value and the second theoretical brightness value of the third theory brightness value, then from the first theoretical brightness
Value is combined with one that selection in the combination of the second theoretical brightness value meets predetermined condition.Here, the predetermined condition is to make
L1/a-L2/ b is maximum, wherein L1For the first theoretical brightness value, L2For the second theoretical brightness value.
In step S105, the first theoretical brightness value in the combination determined by step S104 is obtained according to step S101
Driving voltage of the first corresponding driving voltage as boss's pixel region is obtained according to step S102 by step S104
Drive of the second driving voltage corresponding to the second theoretical brightness value as the sub-sub-pixel region in a determining combination
Dynamic voltage.Sub-pixel to obtain liquid crystal display panel to be made copes with boss's pixel region of the sub-pixel when showing predetermined grayscale
The driving voltage of application and the driving voltage that the sub-sub-pixel region of the sub-pixel is applied.
Fig. 5 is the device of the driving voltage for the sub-pixel for showing determining liquid crystal display panel according to an exemplary embodiment of the present invention
Block diagram.Each pixel of the liquid crystal display panel includes the sub-pixel of multiple colors, and each sub-pixel includes that area ratio is a：B's
Boss's pixel region and sub-sub-pixel region.
As shown in figure 5, determining that the device of the driving voltage of the sub-pixel of liquid crystal display panel includes：First driving voltage obtains single
First 101, second driving voltage acquiring unit 102, third theory brightness value acquiring unit 103, combination determination unit 104 and driving
Voltage acquisition unit 105.
Boss pixel region of the first driving voltage acquiring unit 101 for obtaining the sub-pixel for making the liquid crystal display panel respectively
Domain shows the first driving voltage when each first theoretical brightness value.Here, the first driving voltage acquiring unit 101 only drives son
Boss's pixel region of pixel, to obtain the first driving electricity when boss's pixel region shows each first theoretical brightness value
Pressure.Each first theoretical brightness value is theoretical brightness value of the boss's pixel region in each grayscale.Each grayscale is ash
Each value in the value range of rank.
Here, the first driving voltage acquiring unit 101 can respectively be obtained by existing various methods makes boss's picture
Plain region shows the first driving voltage when each first theoretical brightness value.
As an example, the first driving voltage acquiring unit 101 is as shown in Figure 6.
Fig. 6 is the block diagram for showing the first driving voltage acquiring unit according to an exemplary embodiment of the present invention.
As described in Figure 6, the first driving voltage acquiring unit 101 includes：It is single that boss's pixel region maximum brightness value obtains son
The theoretical brightness value determination subelement 202 of member 201, first and the first driving voltage obtain subelement 203.
Boss's pixel region maximum brightness value obtains boss's pixel that subelement 201 is used to obtain the sub-pixel of liquid crystal display panel
Maximum brightness value of the region in the maximum drive voltage of boss's pixel region.Here, boss's pixel region maximum brightness
Value, which obtains subelement 201, to obtain the maximum brightness value by existing various methods.Boss's pixel region is most
The size of big driving voltage is related with the characteristic of boss's pixel region, can select as needed a driving voltage as
The maximum drive voltage of boss's pixel region.It will be understood by those skilled in the art that the maximum brightness value obtained here is
The maximum brightness value in the case of liquid crystal display panel is faced, also, in aftermentioned content, it is maximum in the case of unspecified
Brightness value each means the maximum brightness value in the case of facing liquid crystal display panel.
First theoretical brightness value determination subelement 202 is obtained for obtaining subelement according to boss's pixel region maximum brightness value
The maximum brightness of the boss's pixel region taken is worth to the gamma curve of boss's pixel region, and utilizes the gamma
Curve determines each first theoretical brightness value respectively.Here, the expression formula of the gamma curve of boss's pixel region is above-mentioned
Formula (1).
First driving voltage obtains subelement 203 makes boss's pixel region show that each first is theoretical bright for obtaining
The first driving voltage when angle value.Here, the first driving voltage, which obtains subelement 203, to obtain institute by existing various methods
State the first driving voltage.
In Figure 5, the second driving voltage acquiring unit 102 for obtaining the sub-sub-pixel region for making the sub-pixel respectively
Show the second driving voltage when each second theoretical brightness value.Here, the second driving voltage acquiring unit 102 only drives sub- picture
The sub-sub-pixel region of element, to obtain the second driving electricity when the sub-sub-pixel region shows each second theoretical brightness value
Pressure.Each second theoretical brightness value is theoretical brightness value of the sub-sub-pixel region in each grayscale.
Here, the second driving voltage acquiring unit 102 can respectively be obtained by existing various methods makes the second son picture
Plain region shows the second driving voltage when each second theoretical brightness value.
As an example, the second driving voltage acquiring unit 102 is as shown in Figure 7.
Fig. 7 is the block diagram for showing the second driving voltage acquiring unit according to an exemplary embodiment of the present invention.
As shown in fig. 7, the second driving voltage acquiring unit 102 includes：It is single that sub-sub-pixel region maximum brightness value obtains son
The theoretical brightness value determination subelement 302 of member 301, second and the second driving voltage obtain subelement 303.
Sub-sub-pixel region maximum brightness value obtains the sub-sub-pixel that subelement 301 is used to obtain the sub-pixel of liquid crystal display panel
Maximum brightness value of the region in the maximum drive voltage in the sub-sub-pixel region.Here, sub-sub-pixel region maximum brightness
Value, which obtains subelement 301, to obtain the maximum brightness value by existing various methods.The sub-sub-pixel region is most
The size of big driving voltage is related with the characteristic in sub-sub-pixel region, can select as needed a driving voltage as
The maximum drive voltage in the sub-sub-pixel region.
Second theoretical brightness value determination subelement 302 according to sub-sub-pixel region maximum brightness value for obtaining subelement
The maximum brightness in the 301 sub-sub-pixel regions obtained is worth to the gamma curve in the sub-sub-pixel region, and utilizes institute
It states gamma curve and obtains each second theoretical brightness value respectively.Here, the expression formula of the gamma curve in the sub-sub-pixel region
For above-mentioned formula (2).
Second driving voltage obtains subelement 303 makes the sub-sub-pixel region show that each second is theoretical bright for obtaining
The second driving voltage when angle value.Here, the second driving voltage, which obtains subelement 303, to obtain institute by existing various methods
State the second driving voltage.
In Figure 5, third theory brightness value acquiring unit 103 is for obtaining third theory brightness value.Here, third is theoretical
Brightness value is theoretical brightness value of the sub-pixel in predetermined grayscale, and predetermined grayscale can be appointing in the value range of grayscale
One grayscale.
Third theory brightness value acquiring unit 103 can obtain third theory brightness value by existing various methods.Make
For example, third theory brightness value acquiring unit 103 is as shown in Figure 8.
Fig. 8 is the block diagram for showing third theory brightness value acquiring unit according to an exemplary embodiment of the present invention.
As shown in figure 8, third theory brightness value acquiring unit 103 includes：Sub-pixel maximum brightness value obtains subelement 401
With third theory brightness value determination subelement 402.
Sub-pixel maximum brightness value obtains master of the sub-pixel in the sub-pixel that subelement 401 is used to obtain liquid crystal display panel
When the driving voltage in the sub-sub-pixel region of subpixel area and the sub-pixel is respectively respective maximum drive voltage most
Big brightness value.Here, sub-pixel maximum brightness value acquisition subelement 401 can be by most light described in existing various methods acquisitions
Angle value.
Third theory brightness value determination subelement 402 is used to obtain subelement 401 according to sub-pixel maximum brightness value and obtain
The maximum brightness of the sub-pixel be worth to the gamma curve of the sub-pixel, and obtain third using the gamma curve and manage
By brightness value.Here, the expression formula of the gamma curve of the sub-pixel is above-mentioned formula (3).
In Figure 5, combination determination unit 104 is used for according to each the obtained with the first driving voltage acquiring unit 101
The corresponding first theoretical brightness value of one driving voltage, each second driving electricity obtained with the second driving voltage acquiring unit
The third theory brightness for pressing corresponding each second theoretical brightness value and third theory brightness value acquiring unit 103 to obtain
Value determines so that sum is equal to the group of the first theoretical brightness value and the second theoretical brightness value of the third theory brightness value
Meet a combination of predetermined condition in conjunction.
Here, combination determination unit 104 can determine a combination for meeting predetermined condition by existing various methods.
As an example, combination determination unit 104 can first determine that the described each first theoretical brightness value and each second theory are bright
Angle value is added the combination of the first theoretical brightness value and the second theory brightness value equal to the third theory brightness value, then from the
One theoretical brightness value is combined with one that selection in the combination of the second theoretical brightness value meets predetermined condition.Here, described predetermined
Condition is so that L1/a-L2/ b is maximum, wherein L1For the first theoretical brightness value, L2For the second theoretical brightness value.
Driving voltage acquiring unit 105 is used to obtain the first reason in the combination determined by combination determination unit 104
Driving voltage by the first driving voltage corresponding to brightness value as boss's pixel region, and obtain and list is determined by combination
The second driving voltage corresponding to the second theoretical brightness value in the combination that member 104 determines is as the sub-sub-pixel region
Driving voltage.Sub-pixel to obtain liquid crystal display panel to be made copes with boss's pixel of the sub-pixel when showing predetermined grayscale
The driving voltage that region applies and the driving voltage that the sub-sub-pixel region of the sub-pixel is applied.
The method and device of the driving voltage of the sub-pixel of the determination liquid crystal display panel of exemplary embodiment according to the present invention,
The wide viewing angle colour cast that liquid crystal display panel can be effectively improved, to promote the visual experience of user.
The above example of the present invention is only exemplary, and the present invention is not limited to this.Those skilled in the art
It should be appreciated that：Without departing from the principles and spirit of the present invention, it can change these embodiments, wherein this hair
Bright range limits in claim and its equivalent.
Claims (8)
1. a kind of method of the driving voltage of the sub-pixel of determining liquid crystal display panel, each pixel of the liquid crystal display panel includes multiple
The sub-pixel of color, each sub-pixel include that area ratio is a：The boss's pixel region and sub-sub-pixel region, feature of b exists
In, the method includes：
A) it obtains respectively when boss's pixel region of the sub-pixel of the liquid crystal display panel being made to show each first theoretical brightness value
First driving voltage, wherein each first theoretical brightness value is theoretical brightness of the boss's pixel region in each grayscale
Value；
B) the second driving electricity when the sub-sub-pixel region of the sub-pixel being made to show each second theoretical brightness value is obtained respectively
Pressure, wherein each second theoretical brightness value is theoretical brightness value of the sub-sub-pixel region in each grayscale；
C) third theory brightness value is obtained, wherein third theory brightness value is that theory of the sub-pixel in predetermined grayscale is bright
Angle value；
D) according to each first theoretical brightness value, each second theoretical brightness value and the third theory brightness value,
It determines so that sum is equal to the combination of the first theoretical brightness value and the second theoretical brightness value of the third theory brightness value
A middle combination for meeting predetermined condition；The predetermined condition is so that L1/a-L2/ b is maximum, wherein L1For the first theoretical brightness
Value, L2For the second theoretical brightness value；
E) the first driving voltage corresponding to the first theoretical brightness value in a determining combination is obtained as boss's picture
The driving voltage in plain region obtains the second driving voltage conduct corresponding to the second theoretical brightness value in a determining combination
The driving voltage in the sub-sub-pixel region.
2. according to the method described in claim 1, it is characterized in that, step a) includes：
A1 maximum drive voltage of boss's pixel region in boss's pixel region of the sub-pixel of the liquid crystal display panel) is measured
When maximum brightness value；
A2 the gamma curve of boss's pixel region) is worth to according to the maximum brightness of boss's pixel region of measurement,
And each first theoretical brightness value is obtained respectively using the gamma curve；
A3 the driving voltage of boss's pixel region) is adjusted, so that boss's pixel region shows each first reason successively
By brightness value, the first driving electricity when making boss's pixel region show each first theoretical brightness value to respectively obtain
Pressure.
3. according to the method described in claim 1, it is characterized in that, step b) includes：
B1 the sub-sub-pixel region for) measuring the sub-pixel is most light in the maximum drive voltage in the sub-sub-pixel region
Angle value；
B2 the gamma curve in the sub-sub-pixel region) is worth to according to the maximum brightness in the sub-sub-pixel region of measurement,
And each second theoretical brightness value is obtained respectively using the gamma curve；
B3 the driving voltage in the sub-sub-pixel region) is adjusted, so that the sub-sub-pixel region shows each second reason successively
By brightness value, the second driving electricity when making the sub-sub-pixel region show each second theoretical brightness value to respectively obtain
Pressure.
4. according to the method described in claim 1, it is characterized in that, step c) includes：
C1 drive of the sub-pixel in boss's pixel region of the sub-pixel and the sub-sub-pixel region of the sub-pixel) is measured
Maximum brightness value when dynamic voltage is respectively respective maximum drive voltage；
C2 it) is worth to the gamma curve of the sub-pixel according to the maximum brightness of the sub-pixel of measurement, and utilizes the gal
Horse curve acquisition third theory brightness value.
5. a kind of device of the driving voltage of the sub-pixel of determining liquid crystal display panel, each pixel of the liquid crystal display panel includes multiple
The sub-pixel of color, each sub-pixel include that area ratio is a：The boss's pixel region and sub-sub-pixel region, feature of b exists
In described device includes：
First driving voltage acquiring unit, respectively acquisition make boss's pixel region of the sub-pixel of the liquid crystal display panel show each
The first driving voltage when the first theoretical brightness value, wherein each first theoretical brightness value is boss's pixel region each
Theoretical brightness value when a grayscale；
Second driving voltage acquiring unit, obtain makes the sub-sub-pixel region of the sub-pixel show that each second is theoretical bright respectively
The second driving voltage when angle value, wherein each second theoretical brightness value is the sub-sub-pixel region in each grayscale
Theoretical brightness value；
Third theory brightness value acquiring unit obtains third theory brightness value, wherein third theory brightness value is the sub-pixel
Theoretical brightness value in predetermined grayscale；
Determination unit is combined, it is corresponding each according to each first driving voltage obtained with the first driving voltage acquiring unit
A first theoretical brightness value, corresponding with each second driving voltage of the second driving voltage acquiring unit acquisition each the
The third theory brightness value that two theoretical brightness values and third theory brightness value acquiring unit obtain, determines so that sum is equal to
Meet one of predetermined condition in the combination of the theoretical brightness value of the first of the third theory brightness value and the second theoretical brightness value
Combination；The predetermined condition is so that L1/a-L2/ b is maximum, wherein L1For the first theoretical brightness value, L2For the second theoretical brightness
Value；
Driving voltage acquiring unit obtains corresponding to the first theoretical brightness value in the combination that combination determination unit determines
Driving voltage of first driving voltage as boss's pixel region obtains the second theoretical brightness value in one combination
Driving voltage of the second corresponding driving voltage as the sub-sub-pixel region.
6. device according to claim 5, which is characterized in that the first driving voltage acquiring unit includes：
Boss's pixel region maximum brightness value obtains subelement, and the boss's pixel region for obtaining the sub-pixel of the liquid crystal display panel exists
The maximum brightness value when maximum drive voltage of boss's pixel region；
First theoretical brightness value determination subelement, the master that subelement obtains is obtained according to boss's pixel region maximum brightness value
The maximum brightness of subpixel area is worth to the gamma curve of boss's pixel region, and true using gamma curve difference
Fixed each first theoretical brightness value；
First driving voltage obtains subelement, obtains the when boss's pixel region being made to show each first theoretical brightness value
One driving voltage.
7. device according to claim 5, which is characterized in that the second driving voltage acquiring unit includes：
Sub-sub-pixel region maximum brightness value obtains subelement, obtains the sub-sub-pixel region of the sub-pixel in the second son picture
The maximum brightness value when maximum drive voltage in plain region；
Second theoretical brightness value determination subelement obtains described time of subelement acquisition according to sub-sub-pixel region maximum brightness value
The maximum brightness of subpixel area is worth to the gamma curve in the sub-sub-pixel region, and true using gamma curve difference
Fixed each second theoretical brightness value；
Second driving voltage obtains subelement, obtains the when the sub-sub-pixel region being made to show each second theoretical brightness value
Two driving voltages.
8. device according to claim 5, which is characterized in that third theory brightness value acquiring unit includes：
Sub-pixel maximum brightness value obtains subelement, obtains the sub-pixel in boss's pixel region of the sub-pixel and described
The maximum brightness value when driving voltage in the sub-sub-pixel region of sub-pixel is respectively respective maximum drive voltage；
Third theory brightness value determination subelement obtains the sub-pixel that subelement obtains according to sub-pixel maximum brightness value
Maximum brightness is worth to the gamma curve of the sub-pixel, and determines third theory brightness value using the gamma curve.
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| CN106981275B (en) * | 2017-05-10 | 2018-03-27 | 惠科股份有限公司 | Display panel pixel driving method and display device |
| CN107256699B (en) | 2017-05-26 | 2020-03-17 | 惠科股份有限公司 | Pixel driving method and display device |
| CN108983509B (en) * | 2018-07-25 | 2021-03-23 | Tcl华星光电技术有限公司 | Liquid crystal display module and liquid crystal display device |
| CN113539205B (en) * | 2021-07-30 | 2022-07-29 | 深圳市华星光电半导体显示技术有限公司 | Pixel voltage determination method and device, electronic device and storage medium |
| CN115019744B (en) * | 2022-07-07 | 2023-11-28 | Tcl华星光电技术有限公司 | Voltage determination method and voltage determination device |
| CN115019745B (en) * | 2022-07-07 | 2023-10-31 | Tcl华星光电技术有限公司 | Voltage determination method and voltage determination device |
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