CN109658884A - A kind of driving method of display panel, drive system and display device - Google Patents
A kind of driving method of display panel, drive system and display device Download PDFInfo
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- CN109658884A CN109658884A CN201811510628.0A CN201811510628A CN109658884A CN 109658884 A CN109658884 A CN 109658884A CN 201811510628 A CN201811510628 A CN 201811510628A CN 109658884 A CN109658884 A CN 109658884A
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
Abstract
The invention discloses a kind of driving method of display panel, drive system and display devices, comprising steps of receiving the first color signal under RGB system, the first color signal is converted to the first color space signal under HSV system；The current chroma signal of the first color space signal is obtained, and obtains the corresponding default regulation coefficient of current chroma signal；Processing is adjusted to current chroma signal respectively using default regulation coefficient；The adjustment processing for completing chroma signal, obtains the second color space signal under HSV system；The driving display panel of the second color signal under RGB system is converted to using the second color space signal.The present invention can improve colour cast problem.
Description
Technical field
The present invention relates to technical field of display panel more particularly to a kind of driving method of display panel, drive system and
Display device.
Background technique
It is formed with the development of science and technology with progress, liquid crystal display due to having thin fuselage, power saving and the low hot spot of radiation
For the main product of display, it is widely applied.Liquid crystal display on existing market is largely backlight liquid crystal
Show device comprising liquid crystal display panel and backlight module (backlightmodule).The working principle of liquid crystal display panel is parallel in two panels
Glass substrate in place liquid crystal molecule, and apply driving voltage on two panels glass substrate to control the rotation of liquid crystal molecule
The light refraction of backlight module is come out and generates picture by direction.
Existing large scale liquid crystal display panel uses VA (Vertical Alignment, vertical orientation technology) liquid crystal mostly
Or IPS (In-Plane Switching, plane conversion) liquid crystal technology, VA type liquid crystal technology exist compared to IPS liquid crystal technology
Higher production efficiency and low manufacturing cost obtain advantage, but obtain light there are more apparent compared to IPS liquid crystal technology in optical property
Learn property defect；That is, there is colour cast under big visual angle in some large scale display panels, especially VA type liquid crystal drive.
Summary of the invention
Technical problem to be solved by the invention is to provide the displays that one kind can preferably solve the problems, such as big visual angle colour cast
Driving method, drive system and the display device of panel.
To achieve the above object, the present invention provides a kind of driving methods of display panel, comprising steps of
The first color signal under RGB system is received, the first color signal is converted to the first color under HSV system
Color space signal；
The current chroma signal of the first color space signal is obtained, and it is corresponding pre- to obtain current chroma signal
If regulation coefficient；
Processing is adjusted to current chroma signal respectively using default regulation coefficient；
The adjustment processing for completing chroma signal, obtains the second color space signal under HSV system；
The driving display panel of the second color signal under RGB system is converted to using the second color space signal.
Optionally, the step of adjustment is handled is that all chroma signals are carried out color according to default regulation coefficient
Intensity value turns down processing.
Optionally, the chroma signal is at least split as the first tone section, the second tone zone according to tone difference
Between and third tone section；
In described the step of obtaining current chroma signal corresponding default regulation coefficient:
The corresponding same tone, the color saturation value of the current chroma signal is bigger, adjusts the adjustment width of processing
It spends bigger.
Optionally, the chroma signal is at least split as the first tone section, the second tone zone according to tone difference
Between and third tone section；
In described the step of obtaining current chroma signal corresponding default regulation coefficient:
Corresponding first tone section, the second tone section and third tone section, with same color saturation value
Currently the corresponding default regulation coefficient of chroma signal is different.
Optionally, first tone section, the second tone section and third tone section be respectively red tone section,
Green tone section and blue color section；
Current chroma signal with same color saturation value, the default adjustment system in corresponding blue color section
Several adjustment amplitudes to current chroma signal, greater than corresponding red tone section the default regulation coefficient to current color
The adjustment amplitude of saturation signal；Tune of the default regulation coefficient in corresponding red tone section to current chroma signal
Whole picture degree, greater than adjustment amplitude of the default regulation coefficient to current chroma signal for corresponding to green tone section.
Optionally, the chroma signal is at least split as red tone section, green tone area according to tone difference
Between and blue color section；
The red tone section, corresponding preset in green tone section and blue color section are adjusted to red color tone
Integral coefficient, green regulation coefficient and blue regulation coefficient；
The red regulation coefficient, green regulation coefficient and blue regulation coefficient are constant；
The red regulation coefficient is greater than the green regulation coefficient to colour saturation to the adjustment amplitude of chroma signal
The adjustment amplitude of signal is spent, and is less than the blue regulation coefficient to the adjustment amplitude of chroma signal.
Optionally, the range of the tone value Hue are as follows: 0-360, corresponding 0-360 degree, wherein
The tone section that tone value meets following formula is red tone section: 0≤Hue < 60 or 300 < Hue≤
360；
The tone section that tone value meets following formula is green tone section: 60≤Hue≤180；
The tone section that tone value meets following formula is blue color section: 180≤Hue≤300.
Optionally, the default regulation coefficient is to be calculated according to preset calculation formula or looked by adjusting coefficient
Table is looked for search to obtain；
Second color space signal and the first color space signal meet following formula:
S '=a*S4+b*S3+c*S2+d*S+e；
Wherein, S is the corresponding current chroma signal of the first color space signal, and S ' is the second color space signal pair
The chroma signal answered；The a, b, c, d, e are constant, a, b, c, d, and e is according to color saturation value and tone section
Difference searches to obtain by preset equation coefficients look-up table.
The invention also discloses a kind of drive systems of display panel, use a kind of display panel as described in the present invention
Driving method, comprising:
Receiving module receives the first color signal under RGB system, the first color signal is converted under HSV system
The first color space signal；
Default regulation coefficient computing module obtains the current chroma signal of the first color space signal, and obtains and work as
The corresponding default regulation coefficient of preceding chroma signal；
Module is adjusted, processing is adjusted to current chroma signal respectively using default regulation coefficient；It is full to complete color
With the adjustment processing of degree signal, the second color space signal under HSV system is obtained；
Second color space signal is converted to the driving display panel of the second color signal under RGB system by drive module.
The invention also discloses a kind of display devices, including a kind of drive system of display panel as described in the present invention.
In the present invention, based under RGB colorimetric system, the color saturation of signal is higher, and colour cast is more serious；Obtain current color saturation
Signal, and the corresponding default regulation coefficient of current chroma signal is obtained, color saturation adjustment is carried out to chroma signal,
For example, turning down color saturation is high, the low height-regulating of color saturation so operates, it is possible to reduce the higher letter of color saturation
Number serious colour cast problem is brought, when carrying out the problem of appropriate adjustment just can improve colour cast to whole frame color signal；Also, this
Scheme, therefore, it is possible to avoid the reduction of light permeable rate, avoids display panel from being produced into not based on sacrificing light-permeable open region
This promotion.
Detailed description of the invention
Included attached drawing is used to provide that a further understanding of the embodiments of the present application, and which constitute one of specification
Point, for illustrating presently filed embodiment, and with verbal description come together to illustrate the principle of the application.Under it should be evident that
Attached drawing in the description of face is only some embodiments of the present application, for those of ordinary skill in the art, is not paying wound
Under the premise of the property made is laborious, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 is that the big visual angle of the various representative colour systems of liquid crystal display and front viewing angle colour cast change schematic diagram；
Fig. 2 is that original pixel is divided into the first schematic diagram of primary and secondary pixel in exemplary arrangement；
Fig. 3 is that original pixel is divided into the second schematic diagram of primary and secondary pixel in exemplary arrangement；
Fig. 4 is a kind of flow chart of the driving method of display panel of the embodiment of the present invention；
Fig. 5 is the current chroma signal of the embodiment of the present invention and the variation schematic diagram of the second chroma signal；
Fig. 6 is the current chroma signal of the embodiment of the present invention and the chromatic aberration curve of the second chroma signal
Figure；
Fig. 7 is the chromatic aberration signal of the current chroma signal and the second chroma signal of the embodiment of the present invention
Figure；
Fig. 8 is a kind of drive system schematic diagram of display panel of the embodiment of the present invention；
Fig. 9 is a kind of schematic diagram of display device of the embodiment of the present invention.
Wherein, 100, the drive system of display panel；200, display device；110, receiving module；120, adjustment system is preset
Number computing module；130, module is adjusted；140, drive module.
Specific embodiment
Specific structure and function details disclosed herein are only representative, and are for describing the present invention show
The purpose of example property embodiment.But the present invention can be implemented by many alternative forms, and be not interpreted as
It is limited only by the embodiments set forth herein.
Present invention will be further explained below with reference to the attached drawings and examples.
Large scale liquid crystal display panel, especially VA (Vertica Aignment, vertical orientation technology) type liquid crystal display
Panel, corresponding big visual angle brightness are rapidly saturated with voltage, cause visual angle image quality to when colour cast compared to facing image quality quality
Deteriorate serious.
Fig. 1 is that the big visual angle of the various representative colour systems of liquid crystal display and front viewing angle colour cast change schematic diagram, with reference to figure
1, it is apparent that, the big visual angle colour cast situation of the colour system of inclined R, G, B form and aspect is come seriously compared with other colour systems.
Exemplary solution is by that RGB (Red, Green, Blue) each sub-pixel will be further subdivided into major/minor picture
Plain (main/sub), so that whole big visual angle brightness is closer to face with voltage change.
Fig. 2 is the first contrast schematic diagram that do not distinguish primary and secondary pixel and distinguish primary and secondary pixel, and Fig. 3 is not distinguish primary and secondary picture
Second contrast schematic diagram of element and difference primary and secondary pixel, knows referring to figs. 2 and 3, wherein the x coordinate, y-coordinate and z coordinate,
Respectively represent three directions of three-dimensional space；The θ A indicates that the pre-dumping lead angle under the wherein big voltage of main pixel, the θ B indicate wherein
Pre-dumping lead angle under sub-pixel small voltage.Wherein, the abscissa in the Fig. 3 is grayscale signal, and ordinate is luminance signal,
Under big visual angle, brightness is rapidly saturated with signal, causes big visual angle colour cast problem (Fig. 3, the arc segment in left side), and distinguishes primary and secondary picture
Element can improve this problem to a certain extent.
Specifically, original signal to be divided into the primary and secondary pixel of big voltage+small voltage, facing big voltage will maintain plus small voltage
Original faces signal with brightness change, and with the Part A in gray scale variation such as Fig. 3, small voltage is seen for the side view brightness that big voltage is seen
Side view brightness with the Part B in gray scale variation such as Fig. 3.Side view synthesizes the brightness seemed with gray scale variation as a left side in this way
Side camber line, more close to the positive brightness of right side straight line with the relationship of gray scale variation, so visual angle brightness connects with signal intensity relationship
Original signal brightness closely is faced with signal intensity so that visual angle is improved.
It is this by spatially primary and secondary pixel to give different driving voltages to solve visual angle colour cast and obtain defect, such
Pixel design generally requires redesign metal routing or TFT (thin film transistor (TFT), Thin Film Transistor) element to drive
Dynamic sub-pixel, causes light-permeable open region sacrifice, influences the saturating rate of panel, directly contribute the promotion of backlight cost.
Thus, the present invention is based on different technical concepts, improvement obtains following scheme:
Fig. 4 is a kind of flow chart of the driving method of display panel of the present invention, as shown in figure 4, the embodiment of the present invention is announced
A kind of driving method of display panel, comprising steps of
S11: receiving the first color signal under RGB system, and the first color signal is converted to the under HSV system
One color space signal；
S12: obtaining the current chroma signal of the first color space signal, and it is corresponding to obtain current chroma signal
Default regulation coefficient；
S13: processing is adjusted to current chroma signal respectively using default regulation coefficient；
S14: the adjustment processing of chroma signal is completed, is obtained under HSV (Hue, Saturation, Value) system
The second color space signal；
S15: the driving display panel of the second color signal under RGB system is converted to using the second color space signal.
Wherein, this is used for the drive system using the driving method, can be set in front end, be arranged in display panel when
Sequence controls in chip, and the performance-relevant default of display panel corresponding with the drive system is also stored in timing controller
The parameters such as regulation coefficient look-up table.
The colour cast degree of each display panel be it is not consistent, the present invention so set, the driving method can be made
It is related to the performance of display panel, it is capable of the color of the more targeted practical colour cast situation progress degree of correspondence to display panel
Saturation degree adjustment, reaches better adjustment effect.
In the present invention, based under RGB colorimetric system, the color saturation of signal is higher, and colour cast is more serious；Obtain current color saturation
Signal, and the corresponding default regulation coefficient of current chroma signal is obtained, color saturation adjustment is carried out to chroma signal,
For example, turning down color saturation is high, the low height-regulating of color saturation so operates, it is possible to reduce the higher letter of color saturation
Number serious colour cast problem is brought, when carrying out the problem of appropriate adjustment just can improve colour cast to whole frame color signal；Also, this
Scheme, therefore, it is possible to avoid the reduction of light permeable rate, avoids display panel from being produced into not based on sacrificing light-permeable open region
This promotion.
In one embodiment, the adjustment handle the step of be by all chroma signals according to default regulation coefficient into
Row color saturation value turns down processing.
In the present solution, the step of adjustment processing of the color saturation is to carry out color saturation to all chroma signals
Value turns down processing, in this way, the second color signal color saturation value under RGB system can be turned down, to avoid corresponding
Color signal has that color saturation value is excessively high and leads to colour cast, improves the big view of display panel, especially VA type panel
The inclined problem of role.
Certainly, two threshold values, i.e. first threshold and second threshold also can be set in the step of which is handled, and work as colour saturation
When spending the color saturation value of signal more than first threshold, the adjustment processing for reducing color saturation value is carried out；And when color saturation is believed
Number color saturation value be lower than second threshold when, then carry out increase color saturation value adjustment processing.
In one embodiment, which is at least split as the first tone section, the second color according to tone difference
Adjust section and third tone section；
In the step of obtaining current chroma signal corresponding default regulation coefficient:
The corresponding same tone, the color saturation value of current chroma signal is bigger, and the adjustment amplitude for adjusting processing is got over
Greatly.
In the present solution, under especially same tone, the color saturation value of chroma signal is got over due to same tone section
Height, corresponding colour cast problem are more serious；Thus, this programme is larger to the adjustment amplitude of the higher signal of color saturation, and color is full
The adjustment amplitude of the signal low with angle value is smaller；Wherein, place usually is turned down to chroma signal progress color saturation value
Reason, in this way, the colour saturation gap of each signal just can be reduced, avoids the too high bring colour cast problem of color saturation, meanwhile, it keeps away
Exempt from the excessive bring colour cast problem of color saturation difference, achievees the effect that preferably to improve colour cast.
In addition, adjustment amplitude here generally refers to turn down the amplitude of chroma signal, not according to calculation formula
Together, color saturation value is bigger, corresponding default regulation coefficient may also it is smaller may also be bigger, but adjust the bigger effect of amplitude
Fruit is constant；Citing, if the default regulation coefficient is the coefficient of entire chroma signal, such as S '=S*H (wherein, S
For current chroma signal, S ' is chroma signal adjusted, and presetting regulation coefficient is H), then it is bigger to turn down amplitude
When, the value for presetting regulation coefficient is smaller；If default regulation coefficient be chroma signal wherein the coefficient of some parameter when,
It is bigger to turn down amplitude, corresponding coefficient is also likely to be bigger, such as (wherein, S is current colour saturation to S '=1-min*H/max
Spending signal, S is the corresponding current chroma signal of the first color space signal in other words, and S ' is color saturation adjusted letter
S ' is the corresponding chroma signal of the second color space signal number in other words, and H is default regulation coefficient) when, at this time default
Regulation coefficient is bigger, and corresponding to turn down amplitude bigger.
Certainly, the lower chroma signal of the color saturation value carry out be turned up processing it is also possible so that different
Chroma signal between more evenly, the problem of capable of also improving colour cast to a certain extent.
In one embodiment, which is at least split as the first tone section, the second color according to tone difference
Adjust section and third tone section；
In the step of obtaining current chroma signal corresponding default regulation coefficient:
Corresponding first tone section, the second tone section and third tone section, with same color saturation value
Currently the corresponding default regulation coefficient of chroma signal is different.
In the present solution, the colour cast problem degree of the chroma signal based on different tone sections is different, with of the same colour full
In the case of angle value, the colour cast in part of tone section is serious, and the colour cast in partial tone section is lighter, for colour cast problem
More obvious tone section can carry out turning down by a relatively large margin to corresponding chroma signal, and not for colour cast problem
So apparent tone section can carry out turning down more by a small margin, and so, it is possible to obtain preferably improves colour cast problem.
In one embodiment, the first tone section, the second tone section and third tone section are respectively red tone
Section, green tone section and blue color section；
Current chroma signal with same color saturation value, the default adjustment system in corresponding blue color section
Several adjustment amplitudes to current chroma signal, greater than corresponding red tone section the default regulation coefficient to current color
The adjustment amplitude of saturation signal；Tune of the default regulation coefficient in corresponding red tone section to current chroma signal
Whole picture degree, greater than adjustment amplitude of the default regulation coefficient to current chroma signal for corresponding to green tone section.
In the present solution, the colour cast problem degree of the chroma signal based on different tone sections is different, with of the same colour full
In the case of angle value, the colour cast in part of tone section is serious, and the colour cast in partial tone section is lighter；Under RGB system,
The colour cast problem most serious of the chroma signal in blue color section, the colour cast of the chroma signal in green tone section are asked
It inscribes most light；This programme, by taking S '=S*H as an example, the default regulation coefficient in corresponding blue color section can be less than corresponding red color
The default regulation coefficient in section is adjusted, the default regulation coefficient in corresponding red tone section can be less than corresponding green tone section
Default regulation coefficient, default regulation coefficient is smaller at this time, and the amplitude of adjustment is bigger；It is corresponding, be with S '=1-min*H/max
Example, corresponds to the default regulation coefficient maximum in blue color section at this time and adjustment amplitude is maximum, corresponds to the pre- of green tone section
If regulation coefficient is minimum and adjustment amplitude is minimum；Under such same color saturation value, the color saturation in the blue color section is believed
Number turn down amplitude maximum, and the chroma signal in the green tone section turn down amplitude minimum, color can not only be reduced
The excessive bring colour cast problem of intensity value, and make the color saturation of chroma signal more evenly, to a certain extent
It is also beneficial to improve colour cast problem, to achieve the effect that good improvement colour cast.
In one embodiment, which is at least split as red tone section, green color according to tone difference
Adjust section and blue color section；
Red tone section, the corresponding default red that is adjusted in green tone section and blue color section adjust system
Number, green regulation coefficient and blue regulation coefficient；
Red regulation coefficient, green regulation coefficient and blue regulation coefficient are constant；
Red regulation coefficient is to the adjustment amplitude of chroma signal, greater than green regulation coefficient to chroma signal
Adjustment amplitude, and it is less than blue regulation coefficient to the adjustment amplitude of chroma signal.
In the present solution, the colour cast problem degree for being somebody's turn to do the chroma signal based on different tone sections is different, it is part of
The colour cast in tone section is serious, and the colour cast in partial tone section is lighter；Under RGB system, the colour saturation in blue color section
The colour cast problem most serious of signal is spent, the colour cast problem of the chroma signal in green tone section is most light；This programme, the blue
Default regulation coefficient is less than red default regulation coefficient, and the default regulation coefficient of red is less than the default adjustment in corresponding green hue section
Coefficient, since default regulation coefficient is smaller, the amplitude of adjustment is bigger；The chroma signal in the blue color section turns down width
Degree is maximum, and the chroma signal in the green tone section turns down amplitude minimum, in this way, color saturation value just can be reduced
Excessive bring colour cast problem, and the color saturation for making chroma signal is more evenly, is also beneficial to a certain extent
Improve colour cast problem, to achieve the effect that good improvement colour cast.
In one embodiment, the range of tone value Hue are as follows: 0-360, corresponding 0-360 degree, wherein
The tone section that tone value meets following formula is red tone section: 0≤Hue < 60 or 300 < Hue≤
360；
The tone section that tone value meets following formula is green tone section: 60≤Hue≤180；
The tone section that tone value meets following formula is blue color section: 180≤Hue≤300.
In the present solution, chroma signal to be split as to different tone sections according to tone difference；Specifically, tone
It represents different form and aspect colors by 00~360 degree to present, wherein defining 0 degree as red, 120 degree are green, and 240 degree are blue；It will
Close to 0 degree it is set as red tone section, will be close to 120 degree and be set as green tone section, will be close to 240 degree of setting
For blue color section；So according to the characteristic in different tones and tone section difference, calculates separately or search and is corresponding
Regulation coefficient is preset to carry out color saturation adjustment, more targetedly can more reasonably carry out the adjustment of color saturation value, to the greatest extent
The problem for avoiding adjustment amplitude too large or too small is measured, so targetedly adjustment processing can preferably improve colour cast problem
Effect, and reduce color saturation to the greatest extent and adjust unbalance problem.
In one embodiment, the default regulation coefficient is calculated according to preset calculation formula or by adjusting being
Number look-up table is searched to obtain.
In the present solution, obtaining corresponding calculation formula or regulation coefficient lookup in advance by preparatory test or calculating
Table, in this way, when obtaining current chroma signal, it can be according to difference (color saturation value, tone zone of chroma signal
Between etc.) obtain different default regulation coefficients, it is adjusted to carry out different degrees of color saturation value to chroma signal
The step of processing, thus reduce color saturation value it is too high caused by colour cast problem.
Wherein, which, which can be, directly records owning based on different tone difference color saturation values
The look-up table of default regulation coefficient.
In one embodiment, second color space signal and the first color space signal meet following formula:
S '=a*S4+b*S3+c*S2+d*S+e；
Wherein, S is the corresponding current chroma signal of the first color space signal, and S ' is the second color space signal pair
The chroma signal answered；A, b, c, d, e are constant, and a, b, c, d, e is passed through according to color saturation value and tone section difference
Preset equation coefficients look-up table is searched to obtain.
In the present solution, the default regulation coefficient can be calculated according to preset calculation formula, although calculation formula is not
Together, it but in general can satisfy in quartic polynomial, constant coefficient a therein, b, c, d, e are according to color saturation value and color
It adjusts section different, searches to obtain by preset look-up table；Certainly, other calculation formula are also applicable, for example, when color is full
When being met certain condition with angle value S, presets regulation coefficient and be equal to radical sign S；When color saturation value S meets another condition, preset
It is also possible that regulation coefficient is equal to the formula such as radical sign S three times.
Fig. 5 is the current chroma signal of the embodiment of the present invention and the variation schematic diagram of the second chroma signal, Fig. 6
It is the current chroma signal of the embodiment of the present invention and the chromatic aberration curve graph of the second chroma signal, Fig. 7 is this hair
The current chroma signal of bright embodiment and the chromatic aberration schematic diagram of the second chroma signal.
Wherein, the chromatic aberration figure of the Fig. 6, in the case of can be positive visual angle.It is of course also possible in the case of being side view angle
's.Dotted line in the Fig. 7 is current chroma signal corresponding chromatic aberration under various colour systems, and solid line is the second colour saturation
Spend signal corresponding chromatic aberration under various colour systems.
Specifically, the input signal RGB tricolor signal of display, if the driving of display is parsed using 8bit color
Degree, then 255 grayscale driving signals that the contrast of RGB three-primary color input signal can be analyzed to 0,1,2 ....The present invention is former by RGB tri-
Color input signal is converted into HSV color space signal, according to different tones and color saturation value tune under the color space of HSV
Whole color saturation achievees the effect that color bias improvement.
With reference to attached drawing 1, the big visual angle of the various representative colour systems of liquid crystal display and front viewing angle colour cast change, can be obvious
It was found that the big visual angle colour cast situation of the colour system of inclined R, G, B form and aspect is come seriously compared with other colour systems, therefore solve R, G, B form and aspect
Colour cast defect can greatly promote the whole color bias improvement at big visual angle.
Wherein, RGB tricolor signal is converted into the calculation of HSV signal such as to the color signal under RGB system in other words
Lower description:
The trichromatic input signal of RGB is 0,1 ..., and 255 8bit grayscale digital signal, each grayscale signal is corresponding to 255
The brightness normalized signal (using 255 grayscale as maximum brightness) of input signal is respectively r, g, b.
Wherein r=(R/255) ^ γ r, g=(G/255) ^ γ g, b=(B/255) ^ γ b, wherein γ r, γ g, γ b are institute
Gamma signal is called, numerical digit grayscale signal is converted to the index parameters of luminance signal.H is tonal signaling, r, g, and b normalization is bright
Degree signal, which penetrates, is converted into tone h and saturation signal s.Wherein, H is color representative, represents different form and aspect by 0 degree~360 degree
Color is presented, wherein defining 0 degree as red, 120 degree are green, and 240 degree are blue.
The transformational relation of r, g, b normalized brightness signal and tone h and saturation signal s meets lower formula:
It can to sum up find, when tone is close to R, G, B solid color shade, the colour cast deterioration watched there are visual angle is more obvious,
When tone is close to R, G, B solid color shade, the more big then color offset phenomenon of color saturation s is more obvious simultaneously.Can through reduce R, G,
Color saturation s when B solid color shade, i.e., closer to solid color shade, color saturation adjusts the color that amplitude is bigger, makes big visual angle ornamental
Compared to the color perfecting Peng problem for facing observation or eliminate colour cast problem.
In addition, after completing color saturation adjustment a detecting step can also be increased, for example, color saturation is believed
Number be converted to CIE Lu ' v ' color space signal (CIE, Commission Internationale de L'Eclairage, state
Border illuminates the committee), wherein L is lightness dimension, and u ' and v ' they are chromaticity coordinates.In order to improve colour cast problem, color saturation adjustment
Reduce to current chroma signal the processing of color saturation value, if but in order to reduce color saturation loss to the greatest extent
Words, pure color variation, i.e., from current chroma signal S, to the variation of the second chroma signal S ', i.e. purity variation or color difference
Δ uv should meet:
Δ uv=√ ((u_1-u_2) ^2+ (v_1-v_2) ^2)≤0.02.Wherein, u_1 and v_1 is current color saturation letter
Number chromaticity coordinate, the u_2 and v_2 are the chromaticity coordinates of the second chroma signal, i.e., the color after color saturation adjustment is full
With degree signal.
Fig. 8 is a kind of schematic diagram of the drive system of display panel of the present invention, with reference to Fig. 8, in conjunction with known to Fig. 1-Fig. 7: this
Invention also discloses a kind of drive system 100 of display panel, uses a kind of driving side of display panel as described in the present invention
Method, comprising:
Receiving module 110, i.e. reception circuit, receive the first color signal under RGB system, the first color signal are converted
For the first color space signal under HSV system；
Default regulation coefficient computing module 120, i.e., default regulation coefficient counting circuit, obtains the first color space signal
Current chroma signal, and obtain the corresponding default regulation coefficient of current chroma signal；
Module 130, i.e. adjustment circuit are adjusted, current chroma signal is adjusted respectively using default regulation coefficient
Processing；The adjustment processing for completing chroma signal, obtains the second color space signal under HSV system；
Second color space signal is converted to the letter of the second color under RGB system by drive module 140, i.e. driving circuit
Number driving display panel.
Fig. 9 is a kind of schematic diagram of display device of the present invention, with reference to Fig. 9, in conjunction with known to Fig. 1-Fig. 8: invention additionally discloses
A kind of display device 200, drive system 100 including a kind of display panel such as of the invention.
It should be noted that the restriction for each step being related in this programme, in the premise for not influencing concrete scheme implementation
Under, it does not regard as being can be the step of making restriction to step sequencing, write on front what is first carried out, be also possible to
It executes, is possibly even performed simultaneously afterwards, as long as this programme can be implemented, all shall be regarded as belonging to protection model of the invention
It encloses.
Technical solution of the present invention can be widely applied to various display panels, such as TN type display panel (full name Twisted
Nematic, i.e. twisted nematic panel), IPS type display panel (In-Plane Switching, plane conversion), VA type show
Panel (Vertical Alignment, vertical orientation technology), MVA type display panel (Multi-domain Vertical
Alignment, more quadrant vertical orientation technologies), it is of course also possible to be other kinds of display panel, such as organic light emitting display
Panel (organic light-emitting diode, abbreviation OLED display panel), applicable above scheme.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of driving method of display panel, which is characterized in that comprising steps of
The first color signal under RGB system is received, the first color signal is converted into the sky of the first color under HSV system
Between signal；
The current chroma signal of the first color space signal is obtained, and obtains the corresponding default tune of current chroma signal
Integral coefficient；
Processing is adjusted to current chroma signal respectively using default regulation coefficient；
The adjustment processing for completing chroma signal, obtains the second color space signal under HSV system；
The driving display panel of the second color signal under RGB system is converted to using the second color space signal.
2. a kind of driving method of display panel as described in claim 1, which is characterized in that the step of adjustment processing is
All chroma signals are turned down into processing according to default regulation coefficient progress color saturation value.
3. a kind of driving method of display panel as described in claim 1, which is characterized in that the chroma signal according to
Tone difference is at least split as the first tone section, the second tone section and third tone section；
In described the step of obtaining current chroma signal corresponding default regulation coefficient:
The corresponding same tone, the color saturation value of the current chroma signal is bigger, and the adjustment amplitude for adjusting processing is got over
Greatly.
4. a kind of driving method of display panel as claimed in claim 2, which is characterized in that the chroma signal according to
Tone difference is at least split as the first tone section, the second tone section and third tone section；
In described the step of obtaining current chroma signal corresponding default regulation coefficient:
Corresponding first tone section, the second tone section and third tone section, it is current with same color saturation value
The corresponding default regulation coefficient of chroma signal is different.
5. a kind of driving method of display panel as claimed in claim 4, which is characterized in that first tone section, the
Two tone sections and third tone section are respectively red tone section, green tone section and blue color section；
Current chroma signal with same color saturation value, the default regulation coefficient pair in corresponding blue color section
The adjustment amplitude of current chroma signal, greater than corresponding red tone section the default regulation coefficient to current colour saturation
Spend the adjustment amplitude of signal；Adjustment width of the default regulation coefficient in corresponding red tone section to current chroma signal
Degree, greater than adjustment amplitude of the default regulation coefficient to current chroma signal for corresponding to green tone section.
6. a kind of driving method of display panel as claimed in claim 2, which is characterized in that the chroma signal according to
Tone difference is at least split as red tone section, green tone section and blue color section；
The red tone section, the corresponding default red that is adjusted in green tone section and blue color section adjust system
Number, green regulation coefficient and blue regulation coefficient；
The red regulation coefficient, green regulation coefficient and blue regulation coefficient are constant；
The red regulation coefficient is greater than the green regulation coefficient and believes color saturation to the adjustment amplitude of chroma signal
Number adjustment amplitude, and be less than the blue regulation coefficient to the adjustment amplitude of chroma signal.
7. a kind of driving method of display panel as described in claim 3 or 4 or 6, which is characterized in that the tone value Hue
Range are as follows: 0-360, corresponding 0-360 degree, wherein
The tone section that tone value meets following formula is red tone section: 0≤Hue < 60 or 300 Hue≤360 <；
The tone section that tone value meets following formula is green tone section: 60≤Hue≤180；
The tone section that tone value meets following formula is blue color section: 180≤Hue≤300.
8. a kind of driving method of display panel as described in claim 1, which is characterized in that the default regulation coefficient is
It is calculated according to preset calculation formula or searches to obtain by adjusting Coefficient Look-up Table；
Second color space signal and the first color space signal meet following formula:
S '=a*S4+b*S3+c*S2+d*S+e；
Wherein, S is the corresponding current chroma signal of the first color space signal, and S ' is that the second color space signal is corresponding
Chroma signal；The a, b, c, d, e are constant, a, b, c, d, e be it is different according to color saturation value and tone section,
It searches to obtain by preset equation coefficients look-up table.
9. a kind of drive system of display panel uses a kind of drive of display panel as described in claim 1-8 any one
Dynamic method characterized by comprising
Receiving module receives the first color signal under RGB system, and the first color signal is converted to the under HSV system
One color space signal；
Default regulation coefficient computing module, obtains the current chroma signal of the first color space signal, and obtains current color
The corresponding default regulation coefficient of saturation signal；
Module is adjusted, processing is adjusted to current chroma signal respectively using default regulation coefficient；Complete color saturation
The adjustment of signal is handled, and obtains the second color space signal under HSV system；
Second color space signal is converted to the driving display panel of the second color signal under RGB system by drive module.
10. a kind of display device, which is characterized in that including a kind of drive system of display panel as claimed in claim 9.
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| CN110379364A (en) * | 2019-07-16 | 2019-10-25 | 北京集创北方科技股份有限公司 | Brightness adjusting method, device and chip based on display driving |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115211A (en) * | 2007-08-30 | 2008-01-30 | 四川长虹电器股份有限公司 | Color independent reinforcement processing method |
| CN101866641A (en) * | 2010-03-09 | 2010-10-20 | 华映视讯（吴江）有限公司 | The color adjustment method of image |
| CN107909553A (en) * | 2017-11-02 | 2018-04-13 | 青岛海信电器股份有限公司 | A kind of image processing method and equipment |
-
2018
- 2018-12-11 CN CN201811510628.0A patent/CN109658884B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101115211A (en) * | 2007-08-30 | 2008-01-30 | 四川长虹电器股份有限公司 | Color independent reinforcement processing method |
| CN101866641A (en) * | 2010-03-09 | 2010-10-20 | 华映视讯（吴江）有限公司 | The color adjustment method of image |
| CN107909553A (en) * | 2017-11-02 | 2018-04-13 | 青岛海信电器股份有限公司 | A kind of image processing method and equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379364A (en) * | 2019-07-16 | 2019-10-25 | 北京集创北方科技股份有限公司 | Brightness adjusting method, device and chip based on display driving |
| CN110379364B (en) * | 2019-07-16 | 2021-05-28 | 北京集创北方科技股份有限公司 | Brightness adjusting method and device based on display driving and chip |
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