CN109559693A - 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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- CN109559693A CN109559693A CN201811511927.6A CN201811511927A CN109559693A CN 109559693 A CN109559693 A CN 109559693A CN 201811511927 A CN201811511927 A CN 201811511927A CN 109559693 A CN109559693 A CN 109559693A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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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, the first color signal is converted to the first color space signal；Obtain the current chroma signal S and corresponding first default regulation coefficient of the first color space signal；Processing is adjusted to current chroma signal S using the first default regulation coefficient, obtains the second chroma signal S '；According to current chroma signal S and the second chroma signal S ', third chroma signal S " is calculated；It completes color saturation value twice to adjust, obtains the second color space signal being converted under HSV system according to third chroma signal S "；The second color signal under RGB system is converted to according to the second color space signal to drive display panel.The present invention carries out secondary adjustment to chroma signal, more targetedly accurately to 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 minus VA (Vertical Alignment, vertical orientation technology) mostly
Liquid crystal or IPS (In-Plane Switching, plane conversion) liquid crystal technology, VA type liquid crystal technology is compared to IPS liquid crystal technology
There are higher production efficiencys and low manufacturing cost to obtain advantage, but compared to IPS liquid crystal technology, there are more apparent in optical property
Obtain optical property defect；That is, some large scale display panels, especially VA type liquid crystal drive are quick with voltage in big visual angle brightness
Saturation causes visual angle image quality serious compared to image quality deterioration is faced to when colour cast, that is, there are problems that big visual angle colour cast.
Summary of the invention
Technical problem to be solved by the invention is to provide the driving sides that one kind can improve the display panel of colour cast problem
Method, drive system and display device.
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 S for obtaining the first color space signal obtains current chroma signal S corresponding
One default regulation coefficient；
Processing is adjusted to current chroma signal S using the first default regulation coefficient, obtains the second color saturation
Signal S '；
According to current chroma signal S and the second chroma signal S ', third chroma signal S " is calculated；
It completes color saturation value twice to adjust, obtains being converted under HSV system according to third chroma signal S "
The second color space signal；
The second color signal under RGB system is converted to according to the second color space signal to drive display panel.
Optionally, it is full that third color is calculated in the current chroma signal S of the basis and the second chroma signal S '
Include: with the step of degree signal S "
Judge whether current chroma signal reaches color saturation preset threshold, if reaching, obtains current colour saturation
Spend the corresponding second default regulation coefficient of signal；
It is calculated based on the second default regulation coefficient according to current chroma signal S and the second chroma signal S '
To third chroma signal S ".
Optionally, the color saturation preset threshold is 0.5；
When the color saturation value of the first chroma signal S is greater than 0.5, it is judged to reaching color saturation preset threshold；
When the color saturation value of the first chroma signal S is less than or equal to 0.5, it is determined as that not up to color saturation is default
Threshold value.
Optionally, the current chroma signal S is at least split as adjustment tone section and non-tune according to tone difference
Whole tone section；
Third color saturation letter is calculated in the current chroma signal S and the second chroma signal S ' of basis
The step of number S " includes:
When the tone Hue value of S is located at adjustment tone section, the second chroma signal S ' is according to the second default adjustment system
Number obtains third chroma signal S "；
When the tone Hue value of S is located at non-adjustment tone section, S "=S.
Optionally, the third chroma signal S " meets following formula:
S "=S- (S-S ') * H2；
The second default regulation coefficient H2 meets following formula:
H2=2*ABS (sin ((Hue/360*3-1/2) * π) -1.
Optionally, the described second default regulation coefficient H2 also meets following formula: H2=H2*factor, when the color is full
When being located at adjustment tone section with the tone value Hue of degree signal, factor is equal to 1, when the tone value of the chroma signal
When Hue is located at non-adjustment tone section, factor is equal to 0.
Optionally, when the tone Hue value of current chroma signal S meets the tone section of following formula, it is divided into tune
Whole tone section: 0≤Hue < 40 or 320 Hue≤360 < or 80 < Hue < 160 or 200 < Hue < 280；
When the tone Hue value of current chroma signal S meets the tone section of following formula, it is divided into non-adjustment tone
Section: 40≤Hue≤80 or 160≤Hue≤200 or 280≤Hue≤320.
Optionally, the described first default regulation coefficient is calculated according to preset calculation formula or by adjusting coefficient
Look-up table is searched to obtain.
The invention also discloses a kind of drive systems of display panel, use the driving side of display panel of the present invention
Method, comprising:
Receiving module is converted to the first color signal in HSV for receiving the first color signal under RGB system
The first color space signal under system；
Regulation coefficient obtains module, for obtaining the current chroma signal S of the first color space signal, obtains current
The corresponding first default regulation coefficient of chroma signal S；
The first adjustment module, for being adjusted processing to current chroma signal S using the first default regulation coefficient,
Obtain the second chroma signal S '；
Second adjustment module, for according to current chroma signal S and the second chroma signal S ', being calculated the
Three chroma signal S "；It completes color saturation value twice to adjust, obtains being converted to according to third chroma signal S "
The second color space signal under HSV system；
Drive module, for being converted to the second color signal under RGB system according to the second color space signal to drive
Display panel.
The present invention also provides a kind of display device, the drive system including display panel of the present invention.
In the present invention, color signal under RGB system, in the higher situation of color saturation, corresponding colour cast problem ratio
It is more apparent；The present invention first uses the first default regulation coefficient once to adjust current chroma signal, then carries out again
Secondary adjustment, in this way, in primary adjustment, certain colour cast problems seriously but adjustment insufficient amplitude can carry out secondary tune
It is whole to enhance adjustment amplitude, reach better adjustment effect；And it is very light for certain colour cast problems, it does not need to be adjusted in fact
Chroma signal, then it is contemplated that being returned to original color saturation value or carrying out small secondary adjustment；Such as
This, adjusts twice, can preferably the less serious chroma signal of serious for colour cast problem in colour cast problem carry out
Closer to the adjustment needed, reach preferable adjustment effect, is conducive to the display effect for improving display panel；Also, this programme
Not based on sacrificing light-permeable open region, therefore, it is possible to avoid the reduction of light permeable rate, display panel production cost is avoided
It is promoted.
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 correlation function schematic diagram that the embodiment of the present invention second presets regulation coefficient H2；
Fig. 6 is another correlation function schematic diagram that the embodiment of the present invention second presets regulation coefficient H2；
Fig. 7 is the variation of the current chroma signal and the second chroma signal of the one of embodiment of the present invention
Schematic diagram；
Fig. 8 is that the current chroma signal of the one of embodiment of the present invention and the color difference of the second chroma signal become
Change curve graph；
Fig. 9 is that the current chroma signal of the one of embodiment of the present invention and the color difference of the second chroma signal become
Change schematic diagram；
Figure 10 is a kind of drive system schematic diagram of display panel of the one of embodiment of the present invention；
Figure 11 is a kind of schematic diagram of display device of the one of embodiment of the present invention.
Wherein, 100, the drive system of display panel；200, display device；110, receiving module；120, regulation coefficient obtains
Modulus block；130, the first adjustment module；140, second adjustment module；150, 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, by the first color signal be converted to HSV (Hue,
Saturation, Value) the first color space signal under system；
S12: obtaining the current chroma signal S of the first color space signal, and it is corresponding to obtain current chroma signal S
The first default regulation coefficient；
S13: being adjusted processing to current chroma signal S using the first default regulation coefficient, and it is full to obtain the second color
With degree signal S '；
S14: according to current chroma signal S and the second chroma signal S ', third color saturation letter is calculated
Number S "；
S15: it completes color saturation value twice and adjusts, obtain being converted to according to third chroma signal S " in HSV
The second color space signal under (Hue, Saturation, Value) system；
S16: the second color signal under RGB system is converted to drive display panel according to 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.
In the present invention, color signal under RGB system, in the higher situation of color saturation, corresponding colour cast problem ratio
It is more apparent；The present invention first uses the first default regulation coefficient once to adjust current chroma signal, then carries out again
Secondary adjustment, in this way, in primary adjustment, certain colour cast problems seriously but adjustment insufficient amplitude can carry out secondary tune
It is whole to enhance adjustment amplitude, reach better adjustment effect；And it is very light for certain colour cast problems, it does not need to be adjusted in fact
Chroma signal, then it is contemplated that being returned to original color saturation value or carrying out small secondary adjustment；Such as
This, adjusts twice, can preferably the less serious chroma signal of serious for colour cast problem in colour cast problem carry out
Closer to the adjustment needed, reach preferable adjustment effect, is conducive to the display effect for improving display panel；Also, this programme
Not based on sacrificing light-permeable open region, therefore, it is possible to avoid the reduction of light permeable rate, display panel production cost is avoided
It is promoted.
In one embodiment, third is calculated according to current chroma signal S and the second chroma signal S ' in this
The step S14 of chroma signal S " includes:
Judge whether current chroma signal reaches color saturation preset threshold, if reaching, obtains current colour saturation
Spend the corresponding second default regulation coefficient of signal；
It is calculated based on the second default regulation coefficient according to current chroma signal S and the second chroma signal S '
To third chroma signal S ".
In the present solution, then the second chroma signal for being first converted to current chroma signal judges that this is current
Whether colour saturation signal meets color saturation preset threshold, if satisfied, then retain second chroma signal, and by the second color
Saturation signal is converted to third chroma signal, and the serious colour saturation signal of colour cast problem is obtained targetedly
Secondary adjustment (for example, the serious more tune of colour cast problem, the light few tune of colour cast problem are some)；And for being unsatisfactory for colour saturation
Preset threshold is spent, the second colour saturation signal can be cancelled, and according to original current chroma signal as third color
Saturation signal；Or secondary adjustment no longer carried out to the second colour saturation signal, and directly using the second colour saturation signal as the
The output of three chroma signals.
In one embodiment, this judged in the step of whether current chroma signal reaches color saturation preset threshold,
The color saturation preset threshold is 0.5；
When the color saturation value of the first chroma signal S is greater than 0.5, it is judged to reaching color saturation preset threshold；
When the color saturation value of the first chroma signal S is less than or equal to 0.5, it is determined as that not up to color saturation is default
Threshold value.
Wherein, which can be 0.5 to 1, not include 0.5 and 1, i.e., when current chroma signal is 1
When, the second chroma signal can not adjust；Certainly, adjustment is also possible, according to specific requirements, the color saturation threshold value
It can carry out corresponding adjustment.
In the present solution, color saturation value is bigger in view of in general, the more serious principle of colour cast problem；By color saturation
Signal is divided into that color saturation value meets a part of preset threshold and color saturation value is unsatisfactory for another portion of preset threshold
Point；Specifically, setting 0.5 for preset threshold, do so, can pick out the more serious chroma signal of colour cast problem into
Row adjustment, and even then handled without adjustment there is no the chroma signal of colour cast problem colour cast problem is relatively light, changing
While kind colour cast problem, the reduction of color saturation value is avoided as far as possible, reaches the balance of colour cast and color saturation, to reach more
Good display effect.
In one embodiment, the current chroma signal S according to tone difference at least be split as adjustment tone section and
Non- adjustment tone section；
According to current chroma signal S and the second chroma signal S ', third chroma signal S " is calculated
Step S14 include:
When the tone Hue value of S is located at adjustment tone section, the second chroma signal S ' is according to the second default adjustment system
Number obtains third chroma signal S "；
When the tone Hue value of S is located at non-adjustment tone section, S "=S.
In the present solution, being improved using the first default regulation coefficient to colour saturation of chroma signal progress adjustment
After colour cast problem, it is also necessary to according to current chroma signal S and the second chroma signal；Specifically, judgement is complete
It is located at adjustment tone section or non-adjustment tone section at the chroma signal after the adjustment of first time color saturation, if
Positioned at adjustment tone section, then third color saturation is obtained according to the second default regulation coefficient according to the second chroma signal S '
Signal S "；Otherwise third chroma signal S "=S；In this way, being located at the chroma signal in adjustment tone section, can be directed to
Property using the second default regulation coefficient carry out secondary adjustment, to achieve the effect that preferably to improve colour cast problem；And it is located at non-tune
The chroma signal in integral coefficient section then can choose third chroma signal S "=S, i.e., without adjustment, in this way, can
To avoid the color saturation value of chroma signal to change as far as possible, the operation for improving colour cast problem is reduced to whole image quality colour saturation
The damage of degree reaches the balance of colour cast and color saturation, to realize better display effect.
Fig. 5 is a kind of correlation function schematic diagram that the embodiment of the present invention second presets regulation coefficient H2, and Fig. 6 is of the invention real
Another correlation function schematic diagram that example second presets regulation coefficient H2 is applied, it is in conjunction with Fig. 4 it is found that real one with reference to Fig. 5 and Fig. 6
It applies in example, third chroma signal S " meets following formula:
S "=S- (S-S ') * H2；
Second default regulation coefficient H2 meets following formula:
H2=2*ABS (sin ((Hue/360*3-1/2) * π) -1.
Wherein, the second default regulation coefficient, can also meet following formula:
H2=ABS (sin ((Hue/360*3-1/2) * π).
In the present solution, under RGB system, 0 degree is defined as red solid color shade, 120 degree are green solid color shade, 240 degree
For blue solid color shade, closer to solid color shade, then colour cast problem is more serious (under same color saturation value)；It is second pre- based on this
If regulation coefficient H2, secondary adjustment by a larger margin will be obtained closer to the chroma signal of solid color shade, and far from pure color
The chroma signal of tone then obtains secondary adjustment more by a small margin；In this way, for the saturation signal close to solid color shade
It can achieve the effect that preferably to improve colour cast problem, and reduction can then be reached for the saturation signal far from solid color shade
Improve the damage that whole color saturation is presented in colour cast, to reach the balance of colour cast and color saturation, is conducive to promote display surface
The display effect of plate.
In one embodiment, which also meets following formula: H2=H2*factor, when color is full
When being located at adjustment tone section with the tone value Hue of degree signal, factor is equal to 1, when tone value Hue of chroma signal
When non-adjustment tone section, factor is equal to 0.
In the present solution, for the second default regulation coefficient, when the tone value of chroma signal is located at adjustment tone zone
Between when, closer to solid color shade, then carry out the more significantly secondary adjustment of color saturation；And it is located at non-adjustment tone section,
Then elimination first is preset adjustment of the regulation coefficient for current chroma signal by the secondary adjustment, i.e., so that third colour saturation
Signal S "=S is spent, in this way, the effect for preferably improving colour cast problem can be reached for the saturation signal close to solid color shade
Fruit, and can then reach the damage for reducing and improving colour cast and presenting to whole color saturation for the saturation signal far from solid color shade
Wound is conducive to the display effect for promoting display panel to reach the balance of colour cast and color saturation.
In one embodiment, it when the tone Hue value of current chroma signal S meets the tone section of following formula, draws
Divide adjustment tone section: 0≤Hue < 40 or 320 Hue≤360 < or 80 < Hue < 160 or 200 < Hue < 280；
When the tone Hue value of current chroma signal S meets the tone section of following formula, non-adjustment tone zone is divided
Between: 40≤Hue≤80 or 160≤Hue≤200 or 280≤Hue≤320.
This programme, under RGB system, defining 0 degree, 120 degree, 240 degree is the center for adjusting tone section, and tone is leaned on
Nearly 0 degree, 120 degree, 240 degree of color saturation value be divided into adjustment tone section；And will be far from 0 degree, 120 degree, 240 degree of color it is full
Non- adjustment tone section is divided into angle value；The more serious chroma signal of colour cast problem can be picked out to be adjusted, and
Relatively light even to colour cast problem there is no the chroma signals of colour cast problem then to handle without adjustment, is improving colour cast problem
While, the reduction of color saturation value is avoided as far as possible, reaches the balance of colour cast and color saturation, to reach preferably display effect
Fruit.
In one embodiment, the first default regulation coefficient be calculated according to preset calculation formula or by adjusting
Coefficient Look-up Table searches 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
Operation, thus reduce color saturation value it is too high caused by colour cast problem.
Wherein, which can be the look-up table for directly recording default regulation coefficient, be also possible to remember
Record the look-up table of the coefficient of preset calculation formula.
Wherein, second color space signal and the first color space signal can meet following formula:
S '=a*S4+b*S3+c*S2+d*S+e；
Wherein, S is current chroma signal, and S ' is the second chroma signal；The a, b, c, d, e are constant, institute
A, b, c are stated, d, e search to obtain according to color saturation value and tone section difference by preset look-up table.
In addition, the chroma signal can also at least be split as the first tone section, the second tone according to tone difference
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, adjusts the adjustment width of processing
It spends bigger.
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, the adjustment amplitude of this programme signal supreme to color saturation is larger, 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.Certainly, the color saturation value compared with
It is also possible that low chroma signal carries out height-regulating processing, so that between different chroma signals more evenly,
The problem of colour cast can be improved to a certain extent.
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 the second chroma signal, and H is default regulation coefficient), then turn down amplitude it is bigger when, in advance
If the value of regulation coefficient is smaller；If default regulation coefficient be chroma signal wherein the coefficient of some parameter when, turn down
Amplitude is bigger, and corresponding coefficient is also likely to be bigger, such as (wherein, S is current color saturation letter to S '=1-min*H/max
Number, S ' is the second chroma signal, and H is default regulation coefficient) when, default regulation coefficient at this time is bigger, corresponding to turn down
Amplitude is bigger.
In addition, the first tone section includes red tone section, second tone section includes green tone section, institute
Stating third tone section includes 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.
Wherein, under RGB system, the colour cast problem most serious of the chroma signal in blue color section, green tone
The colour cast problem of the chroma signal in section is most light；This programme corresponds to the described of blue color section by taking S '=S*H as an example
Default regulation coefficient is less than the default regulation coefficient in corresponding red tone section, and the described of corresponding red tone section is preset
Regulation coefficient is less than the default regulation coefficient in corresponding green tone section, and default regulation coefficient is smaller at this time, the width of adjustment
It spends bigger；It is corresponding, by taking S '=1-min*H/max as an example, the default regulation coefficient for corresponding to blue color section at this time it is maximum and
Adjustment amplitude is maximum, and the default regulation coefficient in corresponding green tone section is minimum and adjustment amplitude is minimum；Such same colour saturation
Under angle value, the chroma signal in the blue color section turns down amplitude maximum, and the color saturation in the green tone section
Signal turns down amplitude minimum, can not only reduce the excessive bring colour cast problem of color saturation value, and make color saturation
The color saturation of signal more evenly, is also beneficial to improve colour cast problem to a certain extent, to reach good improvement colour cast
Effect.
Fig. 7 is the current chroma signal of the embodiment of the present invention and the variation schematic diagram of the second chroma signal, Fig. 8
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. 9 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. 8, 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. 9 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 degree s signal.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 following 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.
Figure 10 is a kind of schematic diagram of the drive system of display panel of the present invention, with reference to Figure 10, in conjunction with known to Fig. 1-Fig. 9:
The invention also discloses a kind of drive systems 100 of display panel, comprising:
Receiving module 110, i.e. reception circuit believe the first color for receiving the first color signal under RGB system
Number be converted to the first color space signal under HSV system；
Regulation coefficient obtains module 120, i.e. regulation coefficient obtains module, for obtaining the current of the first color space signal
Chroma signal S obtains the corresponding first default regulation coefficient of current chroma signal S；
The first adjustment module 130, i.e. the first adjustment circuit, for using the first default regulation coefficient to current color saturation
Signal S is adjusted processing, obtains the second chroma signal S '；
Second adjustment module 140, i.e. second adjustment circuit, for according to current chroma signal S and the second colour saturation
Signal S ' is spent, third chroma signal S " is calculated；It completes color saturation value twice to adjust, obtain according to third colour saturation
Degree signal S " is converted to the second color space signal under HSV system；
Drive module 150, i.e. driving circuit, for being converted to second under RGB system according to the second color space signal
Color signal is to drive display panel.
Figure 11 is a kind of schematic diagram of display device of the present invention, with reference to Figure 11, in conjunction with known to Fig. 1-Figure 10: the present invention also public affairs
A kind of display device 200 is opened, the drive system 100 including display panel as described in the present 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 S for obtaining the first color space signal obtains current chroma signal S corresponding first in advance
If regulation coefficient；
Processing is adjusted to current chroma signal S using the first default regulation coefficient, obtains the second chroma signal
S'；
According to current chroma signal S and the second chroma signal S ', third chroma signal S " is calculated；
It completes color saturation value twice to adjust, obtains being converted to the under HSV system according to third chroma signal S "
Two color space signals；
The second color signal under RGB system is converted to according to the second color space signal to drive display panel.
2. a kind of driving method of display panel as described in claim 1, which is characterized in that the current color saturation of basis
Signal S and the second chroma signal S ', the step of third chroma signal S " is calculated include:
Judge whether current chroma signal reaches color saturation preset threshold, if reaching, obtains current color saturation letter
Number corresponding second default regulation coefficient；
Is calculated according to current chroma signal S and the second chroma signal S ' based on the second default regulation coefficient
Three chroma signal S ".
3. a kind of driving method of display panel as claimed in claim 2, which is characterized in that the color saturation preset threshold
It is 0.5；
When the color saturation value of the first chroma signal S is greater than 0.5, it is judged to reaching color saturation preset threshold；
When the color saturation value of the first chroma signal S is less than or equal to 0.5, it is determined as that not up to color saturation presets threshold
Value.
4. a kind of driving method of display panel as claimed in claim 2, which is characterized in that the current chroma signal
S is at least split as adjustment tone section and non-adjustment tone section according to tone difference；
The current chroma signal S and the second chroma signal S ' of basis, is calculated third chroma signal S "
The step of include:
When the tone Hue value of S is located at adjustment tone section, the second chroma signal S ' is obtained according to the second default regulation coefficient
To third chroma signal S "；
When the tone Hue value of S is located at non-adjustment tone section, S "=S.
5. a kind of driving method of display panel as claimed in claim 4, which is characterized in that the third chroma signal
S " meets following formula:
S "=S- (S-S ') * H2；
The second default regulation coefficient H2 meets following formula:
H2=2*ABS (sin ((Hue/360*3-1/2) * π) -1.
6. a kind of driving method of display panel as claimed in claim 5, which is characterized in that the second default regulation coefficient
H2 also meets following formula: H2=H2*factor, when the tone value Hue of the chroma signal is located at adjustment tone section
When, factor is equal to 1, and when the tone value Hue of the chroma signal is located at non-adjustment tone section, factor is equal to 0.
7. a kind of driving method of display panel as claimed in claim 4, which is characterized in that current chroma signal S's
When tone Hue value meets the tone section of following formula, it is divided into and adjusts tone section: 0≤Hue < 40 or 320 < Hue≤
360 or 80 < Hue < 160 or 200 < Hue < 280；
When the tone Hue value of current chroma signal S meets the tone section of following formula, it is divided into non-adjustment tone zone
Between: 40≤Hue≤80 or 160≤Hue≤200 or 280≤Hue≤320.
8. a kind of driving method of display panel as described in claim 1, which is characterized in that the first default regulation coefficient
It is to be calculated according to preset calculation formula or search to obtain by adjusting Coefficient Look-up Table.
9. a kind of drive system of display panel uses the driving side of the display panel as described in claim 1-8 any one
Method characterized by comprising
Receiving module is converted to the first color signal in HSV system for receiving the first color signal under RGB system
Under the first color space signal；
Regulation coefficient obtains module, and for obtaining the current chroma signal S of the first color space signal, it is full to obtain current color
The first default regulation coefficient corresponding with degree signal S；
The first adjustment module is obtained for being adjusted processing to current chroma signal S using the first default regulation coefficient
Second chroma signal S '；
Second adjustment module, for third color to be calculated according to current chroma signal S and the second chroma signal S '
Saturation signal S "；It completes color saturation value twice to adjust, obtains being converted to according to third chroma signal S " in HSV body
The second color space signal under system；
Drive module, for being converted to the second color signal under RGB system according to the second color space signal to drive display
Panel.
10. a kind of display device, which is characterized in that the drive system including display panel as claimed in claim 9.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010087A (en) * | 2019-04-08 | 2019-07-12 | 北海惠科光电技术有限公司 | A kind of driving method of display panel, drive system and display device |
| CN110136662A (en) * | 2019-04-08 | 2019-08-16 | 重庆惠科金渝光电科技有限公司 | A kind of driving method of display panel, drive system and display device |
| WO2020207169A1 (en) * | 2019-04-08 | 2020-10-15 | 重庆惠科金渝光电科技有限公司 | Driving method and driving system for display panel, and display device |
| CN112911366A (en) * | 2019-12-03 | 2021-06-04 | 海信视像科技股份有限公司 | Saturation adjusting method and device and display equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386004A (en) * | 2001-05-11 | 2002-12-18 | 三洋电机株式会社 | Digital camera and color regulator |
| CN1545326A (en) * | 2003-11-10 | 2004-11-10 | System and method for reinforcing color saturation of video image | |
| CN1731500A (en) * | 2005-08-15 | 2006-02-08 | 友达光电股份有限公司 | Color conversion method and circuit |
| CN1831929A (en) * | 2005-03-08 | 2006-09-13 | 广达电脑股份有限公司 | Device for regulating color saturation degree of dynamic image |
| CN1856117A (en) * | 2005-04-28 | 2006-11-01 | 株式会社日立制作所 | Image display device, image signal processing circuit and chroma control method |
| 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 |
| CN104966492A (en) * | 2015-06-03 | 2015-10-07 | 友达光电股份有限公司 | Driving method of display device |
| CN106328089A (en) * | 2016-08-18 | 2017-01-11 | 友达光电股份有限公司 | Pixel driving method |
-
2018
- 2018-12-11 CN CN201811511927.6A patent/CN109559693B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386004A (en) * | 2001-05-11 | 2002-12-18 | 三洋电机株式会社 | Digital camera and color regulator |
| CN1545326A (en) * | 2003-11-10 | 2004-11-10 | System and method for reinforcing color saturation of video image | |
| CN1831929A (en) * | 2005-03-08 | 2006-09-13 | 广达电脑股份有限公司 | Device for regulating color saturation degree of dynamic image |
| CN1856117A (en) * | 2005-04-28 | 2006-11-01 | 株式会社日立制作所 | Image display device, image signal processing circuit and chroma control method |
| CN1731500A (en) * | 2005-08-15 | 2006-02-08 | 友达光电股份有限公司 | Color conversion method and circuit |
| 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 |
| CN104966492A (en) * | 2015-06-03 | 2015-10-07 | 友达光电股份有限公司 | Driving method of display device |
| CN106328089A (en) * | 2016-08-18 | 2017-01-11 | 友达光电股份有限公司 | Pixel driving method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010087A (en) * | 2019-04-08 | 2019-07-12 | 北海惠科光电技术有限公司 | A kind of driving method of display panel, drive system and display device |
| CN110136662A (en) * | 2019-04-08 | 2019-08-16 | 重庆惠科金渝光电科技有限公司 | A kind of driving method of display panel, drive system and display device |
| WO2020207169A1 (en) * | 2019-04-08 | 2020-10-15 | 重庆惠科金渝光电科技有限公司 | Driving method and driving system for display panel, and display device |
| CN110010087B (en) * | 2019-04-08 | 2022-04-19 | 北海惠科光电技术有限公司 | Driving method and driving system of display panel and display device |
| US11423854B2 (en) | 2019-04-08 | 2022-08-23 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Driving method and system of display panel, and display device |
| CN112911366A (en) * | 2019-12-03 | 2021-06-04 | 海信视像科技股份有限公司 | Saturation adjusting method and device and display equipment |
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| Publication number | Publication date |
|---|---|
| CN109559693B (en) | 2020-09-15 |
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