CN110136662A - 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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- CN110136662A CN110136662A CN201910275213.8A CN201910275213A CN110136662A CN 110136662 A CN110136662 A CN 110136662A CN 201910275213 A CN201910275213 A CN 201910275213A CN 110136662 A CN110136662 A CN 110136662A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
Abstract
This application discloses a kind of driving method of display panel, drive system and display devices, comprising steps of receiving the first chrominance signal, are converted into the first brightness normalized signal, reconvert obtains the first tone color saturation brightness space signal；By the first tone color saturation brightness space signal according to tone different demarcation be six kinds of tone sections；Obtain preset regulation coefficient and tone section correction value；The chroma signal for obtaining the first tone color saturation brightness space signal adjusts chroma signal using regulation coefficient and tone section correction value, obtains the second chroma signal and obtains the second tone color saturation brightness space signal；The minimum value in the first brightness normalized signal is turned down according to the second tone color saturation brightness space signal, obtains the second brightness normalized signal；The second chrominance signal is converted to according to the second brightness normalized signal；Display panel is driven using the second chrominance signal；The application effectively improves the colour cast problem of display panel.
Description
Technical field
This application involves field of display technology more particularly to a kind of driving methods 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 is largely backlight liquid crystal display comprising liquid
Crystal panel and backlight module (Backlight Module).The working principle of liquid crystal display panel is worked as in the parallel glass substrate of two panels
Middle placement liquid crystal molecule, and apply driving voltage on two panels glass substrate to control the direction of rotation of liquid crystal molecule, it will carry on the back
The light refraction of optical mode group, which comes out, generates picture.
Large scale liquid crystal display panel use mostly VA (Vertical Alignment, vertical orientation) liquid crystal technology or
IPS (In-Plane switching, plane conversion) liquid crystal technology, VA type liquid crystal technology compared to IPS liquid crystal technology exist compared with
High production efficiency and low manufacturing cost obtain advantage, but obtain optics there are more apparent compared to IPS liquid crystal technology in optical property
Property defect；There is colour cast under big visual angle in i.e. some large scale display panels, especially VA type liquid crystal drive.
Summary of the invention
The purpose of the application is to provide driving method, drive system and the display device of a kind of display panel, is able to effectively
Improvement colour cast the problem of.
This application discloses a kind of driving methods of display panel, comprising steps of
The first chrominance signal is received, the first chrominance signal is converted into the first brightness normalized signal, according to the first brightness
Normalized signal is converted to the first tone color saturation brightness space signal；
It according to tone different demarcation is the first tone, the second tone, the by the first tone color saturation brightness space signal
Three color scheme, the 4th tone, five colors reconciliation six kinds of tone sections of the 6th tone；
Preset regulation coefficient is obtained, is obtained according to tone section locating for the first tone color saturation brightness space signal
Tone section correction value；
The chroma signal for obtaining the first tone color saturation brightness space signal, uses regulation coefficient and tone section
Correction value is adjusted chroma signal, and it is empty to obtain the second tone color saturation brightness to obtain the second chroma signal
Between signal；
The minimum value in the first brightness normalized signal is turned down according to the second tone color saturation brightness space signal, with
To the second brightness normalized signal；
The second chrominance signal is converted to according to the second brightness normalized signal；
Display panel is driven using the second chrominance signal.
Optionally, the chroma signal for obtaining the first tone color saturation brightness space signal uses adjustment system
The step of several and tone section correction value is adjusted chroma signal, obtains the second chroma signal includes: that color is full
With degree signal s all according to regulation coefficient, calculates and obtain transition chroma signal s '；Transition chroma signal s ' and color are full
The second chroma signal s " is calculated according to tone section correction value with degree signal s.
Optionally, the chroma signal s is calculated all according to regulation coefficient and is obtained transition chroma signal s's '
Step includes: chroma signal s to be obtained transition chroma signal s ' and meets following formula: s'=a × s by calculating4+b
×s3+c×s2+d×s+e；Wherein, s is chroma signal, and s ' is transition chroma signal；The a, b, c, d, e are to adjust
Integral coefficient, and be constant.
Optionally, the transition chroma signal s ' and chroma signal s is calculated according to tone section correction value
To the step of the second chroma signal s " include: transition chroma signal s ' and chroma signal s according to the following formula
Second s ": s "=s+ of chroma signal (s '-s) × H factor is calculated；Wherein, s is chroma signal, and s ' was
Chroma signal is crossed, s " is the second chroma signal, and H factor follows following formula:
Optionally, the transition chroma signal s ' and chroma signal s is calculated according to tone section correction value
To the step of the second chroma signal s " include: transition chroma signal s ' and chroma signal s according to the following formula
Second s ": s "=s+ of chroma signal (s '-s) × H factor is calculated；Wherein, s is chroma signal, and s ' was
Chroma signal is crossed, s " is the second chroma signal, and H factor follows following formula:
Optionally, under different tone sections, tone section correction value is respectively provided with a different weight coefficient A；
When judging tone section locating for the first tone color saturation brightness space signal, when in the first tone color saturation brightness
Tone section locating for spacing wave is respectively red tone section, green tone section, blue color section, yellow tone area
Between, cyan color tone section or when fuchsin tone section, the weight multiplied required for the correction value of tone section is respectively Ared、Agreen、
Ablue、Ayellow、AcyanOr Ameganta；Corresponding red tone section, green tone section, blue color section, yellow tone area
Between, the tone section correction value in cyan color tone section or fuchsin tone section be H factor × Ared、H factor×Agreen、H
factor×Ablue、H factor×Ayellow、H factor×AcyanOr H factor × Ameganta, wherein it is at least described red
Color tone section correction value H factor × AredGreater than the green tone section correction value H factor × Agreen。
Optionally, when the tone H value of current chroma signal s meets the tone section of following formula, it is divided into adjustment
Tone section: the tone section that tone meets following formula is red tone section: 340≤H, H≤20；Tone value meets as follows
The tone section of formula is yellow tone section: 40≤H≤80；The tone section that tone value meets following formula is green tone
Section: 100≤H≤140；The tone section that tone value meets following formula is cyan color tone section: 160≤H≤200；Tone
The tone section that value meets following formula is blue color section: 220≤H≤260；Tone value meets the tone zone of following formula
Between be fuchsin tone section: 280≤H≤320.The tone H value of current chroma signal s meets the tone section of following formula
When, it is divided into non-adjustment tone section: 20 < H < 40,80 < H < 100,140 < H < 160,200 < H < 220,260 < H < 280 or 320 < H
<340。
Optionally, when the tone H value of current chroma signal s meets the tone section of following formula, it is divided into adjustment
Tone section: 330≤H, H≤30,30≤H≤90,90≤H≤150,150≤H≤210,210≤H≤270 or 270≤H≤
330。
Disclosed herein as well is a kind of drive system of driving method using above-mentioned display panel, including receiving module,
Division module, obtains module, computing module, conversion module and drive module at adjustment module；The receiving module receives the first color
First chrominance signal is converted into the first brightness normalized signal, is converted to according to the first brightness normalized signal by multimedia message number
First tone color saturation brightness space signal；The division module is by the first tone color saturation brightness space signal according to color
Tune different demarcation is the first tone, the second tone, third tone, the 4th tone, five colors reconciliation six kinds of tone zones of the 6th tone
Between；The adjustment module obtains preset regulation coefficient, according to tone locating for the first tone color saturation brightness space signal
Section obtains tone section correction value；The color saturation for obtaining module and obtaining the first tone color saturation brightness space signal
Signal is adjusted chroma signal using regulation coefficient and tone section correction value, obtains the second chroma signal
To obtain the second tone color saturation brightness space signal；The computing module is believed according to the second tone color saturation brightness space
The minimum value in the first brightness normalized signal number is turned down, to obtain the second brightness normalized signal；The conversion module according to
Second brightness normalized signal is converted to the second chrominance signal；The drive module drives display surface using the second chrominance signal
Plate.
Disclosed herein as well is a kind of display devices, drive system and display panel including above-mentioned display panel.
Under RGB system, since the ingredient of the colour mixture other than dominant hue is more, so that colour cast is more serious；The application
By turning down the minimum value in the first brightness normalized signal, to reduce the ratio of colour mixture, to reach the mesh for improving color saturation
's；It so may not need the purity that picture element is divided into main picture element and sub-picture element, and improves dominant hue, improve the color of display panel
Inclined problem, while keeping the color of display panel more gorgeous, this programme does not sacrifice the aperture opening ratio of display panel, effectively avoids
The case where light transmittance of display panel reduces.
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 various representativeness colour systems and front viewing angle colour cast change schematic diagram in liquid crystal display panel；
Fig. 2 is the first contrast schematic diagram that do not distinguish primary and secondary pixel and distinguish primary and secondary pixel；
Fig. 3 is the second contrast schematic diagram that do not distinguish primary and secondary pixel and distinguish primary and secondary pixel；
Fig. 4 is a kind of schematic diagram of display device of the embodiment of the application；
Fig. 5 is a kind of schematic diagram of the drive system of display surface of the embodiment of the application；
Fig. 6 is a kind of flow chart of the driving method of display panel of the embodiment of the application；
Fig. 7 is a kind of tone expression schematic diagram of the embodiment of the application；
Fig. 8 is the chroma signal and the variation of the second chroma signal of an embodiment of the embodiment of the application
Schematic diagram；
Fig. 9 is the schematic diagram of the tone of the embodiment of the application Yu the variation of tone section correction value；
Figure 10 is the schematic diagram of the tone of another embodiment of the application Yu the variation of tone section correction value；
Figure 11 is that the variation of the chroma signal of the embodiment of the application and the color difference of the second chroma signal is shown
It is intended to；
Figure 12 is the color of the chroma signal of the embodiment of the application and the different colours of the second chroma signal
The variation schematic diagram of difference.
Wherein, 100, display device；200, drive system；300, display panel；210, receiving module；220, mould is divided
Block；230, module is adjusted；240, module, 250, computing module, 260, conversion module, 270, drive module are obtained.
Specific embodiment
It is to be appreciated that term used herein above, disclosed specific structure and function details, it is only for description
Specific embodiment is representative, but the application can be implemented by many alternative forms, be not construed as only
It is limited to the embodiments set forth herein.
In the description of the present application, term " first ", " second " are used for description purposes only, and it is opposite to should not be understood as instruction
Importance, or implicitly indicate the quantity of indicated technical characteristic.As a result, unless otherwise indicated, " first ", " are defined
Two " feature can explicitly or implicitly include one or more of the features；The meaning of " plurality " is two or two
More than.Term " includes " and its any deformation, mean and non-exclusive include, it is understood that there may be or addition is one or more that other are special
Sign, integer, step, operation, unit, component and/or combination thereof.
In addition, "center", " transverse direction ", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner",
The term of the orientation or positional relationship of the instructions such as "outside" is that orientation or relative positional relationship based on the figure describe, only
Be that the application simplifies description for ease of description, rather than indicate signified device or element must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Furthermore unless specifically defined or limited otherwise, term " installation ", " connected ", " connection " shall be understood in a broad sense, example
Such as it may be fixed connection or may be dismantle connection, or integral connection；It can be mechanical connection, be also possible to be electrically connected
It connects；It can be directly connected, it can also indirectly connected through an intermediary or the connection inside two elements.For ability
For the those of ordinary skill in domain, the concrete meaning of above-mentioned term in this application can be understood as the case may be.
Large scale liquid crystal display panel mostly uses minus VA (Vertical Alignment, vertically oriented) liquid crystal or IPS
(In-plane Switch, plane conversion) liquid crystal technology, there are higher lifes compared to IPS liquid crystal technology for VA type liquid crystal technology
It produces efficiency and low manufacturing cost obtains advantage, but there are more apparent that optical property lacks compared to IPS liquid crystal technology in optical property
It falls into, especially large size panel needs biggish visual angle to present in terms of business application.
Fig. 1 is that the big visual angle of various representativeness colour systems and front viewing angle colour cast change schematic diagram in liquid crystal display panel；Such as
Shown in Fig. 1, when tone is close to R (red), G (green), B (indigo plant) 0 pure hue, the colour cast deterioration watched there are visual angle is more obvious,
Simultaneously when tone is close to R, G, B pure hue, color offset phenomenon is more obvious, the reason for this is that there are other colors for R, G, B pure hue
Ingredient.
Exemplary solution is that each sub-pixel of RGB is further subdivided into primary and secondary (Main/Sub) pixel, so that whole big
Visual angle brightness is closer to face with voltage change.Fig. 2 is not distinguish primary and secondary pixel and distinguish the first of primary and secondary pixel and compare to show
It is intended to, Fig. 3 is the second contrast schematic diagram that do not distinguish primary and secondary pixel and distinguish primary and secondary pixel, is known referring to figs. 2 and 3, wherein
X coordinate, y-coordinate and z coordinate respectively represent three directions of three-dimensional space；θ A indicates the pre-dumping under the wherein big voltage of main pixel
Lead angle, θ B indicate the pre-dumping lead angle under wherein sub-pixel small voltage.Wherein, the abscissa in the Fig. 3 is grayscale signal, and vertical seat
It is designated as luminance signal, under big visual angle, brightness is rapidly saturated with signal, causes the big visual angle colour cast problem (camber line on the left of in Fig. 3
Section), and this problem can be improved to a certain extent by distinguishing primary and secondary pixel.
Liquid crystal display high voltage appearance side view angle voltage corresponding brightness variation ratio is easier to tend to be saturated, so original is believed
Number being divided into big voltage adds small voltage signal to can see such as right figure, face big voltage plus small voltage to maintain original face signal with
Brightness change, the side view brightness that big voltage is seen is with Part A in gray scale variation such as Fig. 3, and the side view brightness that small voltage is seen is with ash
Rank variation such as Part B in Fig. 3, the brightness that such side view synthesis seems is with gray scale variation just more close to positive brightness with ash
The relationship of rank variation, so visual angle brightness faces original signal brightness with signal intensity with signal intensity relationship is close so that visual angle
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 picture
Element design generally requires redesign metal routing or TFT element to drive sub-pixel, causes light-permeable open region sacrifice, influences face
Plate penetrance directly contributes the promotion of backlight cost.
Below with reference to the accompanying drawings it elaborates with optional embodiment to the application.
As shown in figure 4, this application discloses a kind of display device 100,200 He of drive system including display panel 300
Display panel 300.
As shown in figure 5, disclosed herein as well is a kind of drive systems 200 of display panel 300, comprising: receiving module
210, division module 220, adjustment module 230, acquisition module 240, computing module 250, conversion module 260 and drive module 270；
The receiving module 210 receives the first chrominance signal, and the first chrominance signal is converted into the first brightness normalized signal, according to the
One brightness normalized signal is converted to the first tone color saturation brightness space signal；The division module 220 is by the first color
Mix colours saturation degree brightness space signal according to tone different demarcation be the first tone, the second tone, third tone, the 4th tone,
Five colors reconciliation six kinds of tone sections of the 6th tone；The adjustment module 230 obtains preset regulation coefficient, according to the first tone
Tone section locating for color saturation brightness space signal obtains tone section correction value；The acquisition module 240 obtains first
The chroma signal of tone color saturation brightness space signal, using regulation coefficient and tone section correction value to color saturation
Signal is adjusted, and obtains the second chroma signal to obtain the second tone color saturation brightness space signal；The calculating
Module 250 turns down the minimum value in the first brightness normalized signal according to the second tone color saturation brightness space signal, with
To the second brightness normalized signal；The conversion module 260 is converted to the second color letter according to the second brightness normalized signal
Number；The drive module 270 drives display panel 100 using the second chrominance signal.
It is corresponding, as shown in fig. 6, disclosed herein as well is a kind of driving method for driving above-mentioned display panel, including step
It is rapid:
S1: receiving the first chrominance signal, the first chrominance signal be converted into the first brightness normalized signal, bright according to first
Degree normalized signal is converted to first brightness of tone color saturation (HSV) spacing wave；
S2: by the first tone color saturation brightness space signal according to tone different demarcation be the first tone, the second tone,
Third tone, the 4th tone, five colors reconciliation six kinds of tone sections of the 6th tone；
S3: obtaining preset regulation coefficient, according to tone section locating for the first tone color saturation brightness space signal
Obtain tone section correction value；
S4: the chroma signal of the first tone color saturation brightness space signal is obtained, regulation coefficient and tone are used
Section correction value is adjusted chroma signal, and it is bright to obtain the second tone color saturation to obtain the second chroma signal
Spend spacing wave；
S5: turning down the minimum value in the first brightness normalized signal according to the second tone color saturation brightness space signal,
To obtain the second brightness normalized signal；
S6: the second chrominance signal is converted to according to the second brightness normalized signal；
S7: display panel is driven using the second chrominance signal.
Under RGB colorimetric system, since the ingredient of the colour mixture other than dominant hue is more, so that colour cast is more serious；The application is logical
The minimum value turned down in the first brightness normalized signal is crossed, to reduce the ratio of colour mixture, to reach raising color saturation, that is, is reached
The purpose for improving the purity of dominant hue, so that the color of display panel is more gorgeous；It so may not need and picture element be divided into main picture
Element and sub-picture element, this programme under the premise of not sacrificing the aperture opening ratio of display panel, can improve the colour cast problem of display panel,
The case where effectively avoiding the light transmittance of display panel reduces；And use the knot of regulation coefficient and tone section correction value
The scheme of conjunction is adjusted color saturation, allows the adjustment of color saturation more targeted, more accurately, so that adjustment
Result be more advantageous to improve display panel picture display effect, wherein chrominance signal can be red green blue tricolor signal,
Specifically, the first chrominance signal can be the first red green blue tricolor signal, the second chrominance signal can be the second RGB three
Primary signal.
Present application contemplates 0 °~360 ° of whole tones, when even partition, that is, are divided into red, green, blue, Huang
This six kinds of tones of color, cyan and fuchsin (RGBYMC), respectively correspond the first tone, the second tone, third tone, the 4th tone,
The five colors the 6th tone of reconciliation；Wherein yellow, cyan, these three tones of fuchsin are just respectively red, green, in blue three primary colors
Take the colour mixture tone of two kinds of tones.
The chroma signal for obtaining the first tone color saturation brightness space signal, uses regulation coefficient and tone
Section correction value is adjusted chroma signal, and the step S4 for obtaining the second chroma signal includes: color saturation letter
Number s is calculated all according to regulation coefficient and is obtained transition chroma signal s '；Transition chroma signal s ' and color saturation letter
The second chroma signal s " is calculated according to tone section correction value in number s.Chroma signal s is first all adjusted, is obtained
Transition chroma signal s ', then transition chroma signal s ' is calculated to obtain the by tone section correction value
Two chroma signal s ", the so amendment Jing Guo tone section correction value, can make the adjusting of the color saturation of tone more
Add precisely, the display effect of picture is more preferable.
As shown in fig. 7, H is tone, different form and aspect colors are represented by 0 °~360 ° and are presented, wherein defining 0 ° is red,
120 ° are green, and 240 ° are blue.First chrominance signal is converted into the first brightness normalization by the first chrominance signal of the reception
Signal includes: according to the step S1 that the first brightness normalized signal is converted to the first tone color saturation brightness space signal
First chrominance signal is inputted as grayscale digital signal；According to grayscale digital signal be converted to the first brightness normalized signal r,
g,b；Wherein, r=(R/255) ^ γ r, g=(G/255) ^ γ g, b=(B/255) ^ γ b, γ r, γ g, γ b are gamma signal；
The step of obtaining the chroma signal of the first tone color saturation brightness space signal includes: the first brightness normalization letter
It number is converted into tone and the formula of color saturation is as follows:
Wherein, max indicates the maximum value in r/g/b, and min indicates the minimum value in r/g/b.First chrominance signal passes through public affairs
Formula calculates the first brightness normalized signal, compares to obtain maximum value max and minimum value in the first brightness normalized signal
Min calculates tone H and chroma signal s by above-mentioned formula.
It is described that minimum value in first brightness normalized signal is turned down according to the second tone color saturation brightness space signal,
It include: the max r when mass-tone is adjusted to red to obtain the step S5 of the second brightness normalized signal；Determine green and blue pair
Smaller value is the minimum value of the first brightness normalized signal in the first brightness the normalized signal g and b answered；When mass-tone is adjusted to green
When, max g；Determine that smaller value is the first brightness normalization in red and blue corresponding first brightness normalized signal r and g
The minimum value of signal；When mass-tone is adjusted to blue, max b；Determine the red and corresponding first brightness normalized signal r of green
It is the minimum value of the first brightness normalized signal with smaller value in g.It specifically, then can be with for example, when mass-tone is adjusted to blue
Determine r, the max in g, b is b, because without extra computation max, and only needs to calculate the smaller value of r and g as min i.e.
Can, to turn down min in the case where reducing calculation amount to reduce the ingredient of colour mixture, faced and side to reduce display panel
Depending on colour cast；For B tone there are G, R color component of part, the light leak amount at the big visual angle of G, R composition is more bright compared to positive visual angle
It is aobvious, so that the B dominant hue after colour mixture generates colour cast.This programme reduces big visual angle G, R light leakage pair by reducing G, R color component
In the influence of dominant hue B, visual angle colour cast is reduced, while B dominant hue excitation purity being allowed to be promoted, improves colour vividness；Other colors
Similarly.
As shown in figure 8, the chroma signal s is calculated all according to regulation coefficient and is obtained transition chroma signal
The step of s ' includes: chroma signal s to be obtained transition chroma signal s ' and meets following formula by calculating: s '=a ×
s4+b×s3+c×s2+d×s+e；Wherein, s is chroma signal, and s ' is transition chroma signal；The a, b, c, d, e
It for regulation coefficient, and is constant.According to the difference of tone, constant value a, b, c, d, e can be varied, and then color saturation is believed
Also color saturation has been adaptively adjusted in difference, realization by the calculated transition chroma signal s ' of formula by number s.
As shown in figure 9, the transition chroma signal s ' and chroma signal s is calculated according to tone section correction value
The step of obtaining the second chroma signal s " includes: transition chroma signal s ' and chroma signal s according to following public
Second s ": s "=s+ of chroma signal (s '-s) × H factor is calculated in formula；Wherein, s is chroma signal, and s ' is
Transition chroma signal, s " are the second chroma signal, and H factor follows following formula:Chroma signal s is converted into transition chroma signal s '
Afterwards, coarse regulation is completed, and since in the same tone section, in fact closer to dominant hue, colour cast problem is more serious, because
And this programme makes tonal correction value closer to dominant hue, then tonal correction value is bigger, adjusts at this point, the amplitude of coarse regulation is close
Whole target, thus when fine control, hardly change the adjustment result of coarse regulation；And it is corresponding, when the colour cast of HSV color space is asked
When inscribing very light, the adjustment amplitude of coarse regulation is excessive, thus, multiplied by a lesser tonal correction value, amplitude can be adjusted
It mitigates, in the case where improving colour cast problem, to avoid the loss of color saturation so as to chroma signal as far as possible
It adjusts more accurate, may be implemented to realize different degrees of chroma signal for the different tone interval range of colour cast degree
Adjustment.
As shown in Figure 10, in one embodiment, the transition chroma signal s ' and chroma signal s are according to tone
Section correction value be calculated the step of the second chroma signal s " include: transition chroma signal s ' and color saturation letter
Second s ": s "=s+ of chroma signal (s '-s) × H factor is calculated in number s according to the following formula；Wherein, s is full for color
With degree signal, s ' is transition chroma signal, and s " is the second chroma signal, and H factor follows following formula:After chroma signal s is converted into transition chroma signal s ', it is
So that the adjustment to chroma signal is more accurate, may be implemented to realize not for the different tone interval range of colour cast degree
With the adjustment of the chroma signal of degree, s ' is made to be further converted to s " according to tone section correction value H factor, from
And realize the accurate adjustment different for colour cast degree.
The demarcation interval of tone needs other than the tone section that is adjusted including six, further includes non-adjustment tone zone
Between；Six of them tone section includes: the first tone, the second tone, third tone, the 4th tone, the five colors the 6th color of reconciliation
Adjust six kinds of tone sections.Judge whether tone is in the first tone, the second tone, third tone, the 4th tone, the five colors and reconciles
In 6th six kinds of tone tone section, if so, amendment adjustment system is calculated according to regulation coefficient and tone section correction value
Number；If it is not, then being adjusted without color saturation；It is full to be adjusted to obtain the second color to chroma signal s using regulation coefficient
With degree signal s "；Wherein, amendment regulation coefficient tables look-up to obtain.
The application improves chroma signal s to transition chroma signal when solving above-mentioned six kinds of tone sections
S ', then the second chroma signal s " is obtained by tone section correction value, tone section correction value maintains saturation degree to improve
Tone, and the colour mixture among above-mentioned six kinds of tone sections do not adjust saturation signal s to s ' then, maintain former heavy shade, reduction pair
The influence of image quality color.
Amendment adjustment system is obtained by first judging tone section, then by regulation coefficient and the progress operation of tone section correction value
Chroma signal s is then adjusted to the second chroma signal s " by correcting regulation coefficient, so for the area Bu by number
Between for chroma signal s in range, then do not need to carry out chroma signal s by adjusting coefficient adjustment be s ' this
Step, greatly reduces calculation amount；And do not needed when passing through the correction value operation of tone section to not in section yet, not into
The chroma signal s ' adjusted that went is modified adjustment.This programme specific implementation citing are as follows: assuming that regulation coefficient is 1.1,
The correction value in red tone section is 0.8, then in the chroma signal s in red tone section, preferentially
Calculate amendment regulation coefficient are as follows: 1.1 × 0.8=0.88 then transports amendment regulation coefficient with chroma signal s
It calculates, to obtain the second chroma signal s ".
Under different tone sections, tone section correction value is respectively provided with a different weight coefficient A；When judging
Tone section locating for toning saturation degree brightness space signal of the same colour, when in the first tone color saturation brightness space signal
Locating tone section is respectively red tone section, green tone section, blue color section, yellow tone section, cyan
When tone section or fuchsin tone section, the weight multiplied required for the correction value of tone section is respectively Ared、Agreen、Ablue、
Ayellow、AcyanOr Ameganta；
Corresponding red tone section, green tone section, blue color section, yellow tone section, cyan color tone section
Or the tone section correction value in fuchsin tone section is H factor × Ared、H factor×Agreen、H factor×Ablue、H
factor×Ayellow、H factor×AcyanOr H factor × Ameganta, wherein at least described red tone section correction value
H factor×AredGreater than the green tone section correction value H factor × Agreen；Weight is according to tabling look-up to obtain.H
Factor is bigger, and when weight A is bigger, the numerical value of tone section correction value is bigger, then the amplitude adjusted is bigger so that it is corresponding certain
A kind of promotion amplitude of the color saturation of dominant hue is bigger.Wherein, weight A is the difference according to tone and carries out different change
Become.It can intuitively find out that the colour cast of red solid color shade is significantly greater than the colour cast of green tone, red tone in this programme according to Fig. 1
Section correction value is greater than green tone section correction value, and the adjustment than green tone by a larger margin can be carried out to red tone,
So that the colour cast degree of two kinds of shade of color approach while improving is consistent.
As shown in figure 9, the function of tone is with R Hue=0, Y Hue=60, G Hue=120, C Hue=180, B
Outside decreasing function centered on Hue=240 and M Hue=300；The tone H value of current chroma signal s meets following public
When the tone section of formula, be divided into adjustment tone section: the tone section that tone meets following formula is red tone section:
340≤H,H≤20；The tone section that tone value meets following formula is yellow tone section: 40≤H≤80；Tone value meets
The tone section of following formula is green tone section: 100≤H≤140；Tone value meets the tone section of following formula for blueness
Color tone section: 160≤H≤200；The tone section that tone value meets following formula is blue color section: 220≤H≤
260；The tone section that tone value meets following formula is fuchsin tone section: 280≤H≤320.
When the tone H value of current chroma signal s meets the tone section of following formula, it is divided into non-adjustment tone zone
Between: 20 < H < 40,80 < H < 100,140 < H < 160,200 < H < 220,260 < H < 280 or 320 < H < 340.According to function formula:As R Hue=0, Y Hue=60, G Hue=120, C Hue=
180, when B Hue=240 or M Hue=300, H factor=1.Wherein, Hue indicates that tone, H indicate writing a Chinese character in simplified form for Hue.
As shown in Figure 10, in one embodiment, the function of tone is with R Hue=0, Y Hue=60, G Hue=120, C
Outside decreasing function centered on Hue=180, B Hue=240 and M Hue=300；The tone of current chroma signal s
When Hue value meets the tone section of following formula, be divided into adjustment tone section: the tone H value of current chroma signal s is full
When the tone section of the following formula of foot, be divided into adjustment tone section: 330≤H, H≤30,30≤H≤90,90≤H≤150,
150≤H≤210,210≤H≤270 or 270≤H≤330.According to function formula:When R Hue=0, Y Hue=60, G Hue=120, C Hue=180,
When B Hue=240 or M Hue=300, H factor=1.Wherein, Hue indicates that tone, H indicate writing a Chinese character in simplified form for Hue.
Figure 11 is the variation schematic diagram of the color difference of chroma signal and the second chroma signal；
Figure 12 is the variation schematic diagram of the color difference of the different colours of chroma signal and the second chroma signal；Such as figure
Shown in 11 and Figure 12, in one embodiment, the second brightness normalized signal is released according to the second saturation signal is counter；Again by second
Brightness normalized signal is converted into the second chrominance signal, and formula is as follows: R '=255 × (r ')1/γr, G '=255 × (g ')1/γg、
B '=255 × (b ')1/γb, the second chrominance signal driving display panel.
Disclosed herein as well is another embodiments, red green blue tricolor signal R, G, B are received, by red green blue tricolor signal
R, G, B are according to formula: r=(R/255) ^ γ r, g=(G/255) ^ γ g, b=(B/255) ^ γ b are converted into the first brightness normalizing
Change signal r, g, b, wherein γ r, γ g, γ b are gamma signal；Is converted to according to the first brightness normalized signal r, g, b
Toning saturation degree brightness space signal of the same colour；
Tone is divided into six kinds of tone sections according to the difference of tone by the first tone color saturation brightness space signal,
That is red tone section: 340 < H, H < 20, green tone section: 100 < H < 140, blue color section 220 < H < 260, yellow color
Adjust section 40 < H < 80, cyan color tone section 160 < H < 200 and fuchsin tone section: 280 < H < 320；Not according to tone section
Together, it is calculated by following formula, obtains the chroma signal s of the first tone color saturation brightness space signal:
According to tone section locating for the tone of the first tone color saturation brightness space signal, preset adjustment system is obtained
Count a, b, c, d, e and tone section correction value H factor；Wherein, tone section correction value H factor passes through following formula
It obtains:
Wherein, max indicates the maximum value in r/g/b, and min indicates the minimum value in r/g/b；Using regulation coefficient a, b, c,
D, e are adjusted chroma signal s, obtain transition chroma signal s ', and formula is as follows: s '=a × s4+b×s3+c×
s2+d×s+e；
Chroma signal s is adjusted by tone section correction value H factor, obtains the second color saturation letter
Number s ", formula are as follows: s "=s+ (s '-s) × H factor, and then obtain the second tone color saturation brightness space signal；
The minimum value in the first brightness normalized signal is turned down according to the second tone color saturation brightness space signal, with
To the second brightness normalized signal r ', g ', b '；Second brightness normalized signal r ', g ', b ' are according to formula: R '=255 × (r '
)1/γr, G '=255 × (g ')1/γg, B '=255 × (b ')1/γbBe converted to the second red green blue tricolor signal R ', G ', B '；It uses
Second red green blue tricolor signal R ', G ', B ' drive display panel.
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 the protection model of the application
It encloses.
The technical solution of the application can be widely applied to various display panels, as TN (Twisted Nematic, distort to
Column type) display panel, IPS (In-Plane Switching, plane conversion type) display panel, VA (Vertical
Alignment, vertical orientation type) display panel, (Multi-Domain Vertical Alignment, more quadrants are vertical by MVA
Alignment-type) display panel, it is of course also possible to be other kinds of display panel, such as OLED (Organic Light-Emitting
Diode, Organic Light Emitting Diode) display panel, applicable above scheme.
The above content is combine specific optional embodiment to made by the application further description, and it cannot be said that
The specific implementation of the application is only limited to these instructions.For those of ordinary skill in the art to which this application belongs, exist
Under the premise of not departing from the application design, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the application's
Protection scope.
Claims (10)
1. a kind of driving method of display panel, which is characterized in that comprising steps of
The first chrominance signal is received, the first chrominance signal is converted into the first brightness normalized signal, according to the first brightness normalizing
Change signal and is converted to the first tone color saturation brightness space signal；
By the first tone color saturation brightness space signal according to tone different demarcation be the first tone, the second tone, third color
Tune, the 4th tone, five colors reconciliation six kinds of tone sections of the 6th tone；
Preset regulation coefficient is obtained, tone is obtained according to tone section locating for the first tone color saturation brightness space signal
Section correction value；
The chroma signal for obtaining the first tone color saturation brightness space signal is corrected using regulation coefficient and tone section
Value is adjusted chroma signal, obtains the second chroma signal to obtain the second tone color saturation brightness space letter
Number；
The minimum value in the first brightness normalized signal is turned down according to the second tone color saturation brightness space signal, to obtain
Two brightness normalized signals；
The second chrominance signal is converted to according to the second brightness normalized signal；And
Display panel is driven using the second chrominance signal.
2. a kind of driving method of display panel as described in claim 1, which is characterized in that the first tone color of the acquisition is full
With the chroma signal of degree brightness space signal, chroma signal is carried out using regulation coefficient and tone section correction value
Adjustment, obtain the second chroma signal the step of include:
Chroma signal s is calculated all according to regulation coefficient and is obtained transition chroma signal s '；
The second color saturation letter is calculated according to tone section correction value in transition chroma signal s ' and chroma signal s
Number s ".
3. a kind of driving method of display panel as claimed in claim 2, which is characterized in that the chroma signal s is complete
According to regulation coefficient, calculating the step of obtaining transition chroma signal s ' includes: in portion
Chroma signal s meets following formula by calculating acquisition transition chroma signal s ':
S'=a × s4+b×s3+c×s2+d×s+e；
Wherein, s is chroma signal, and s ' is transition chroma signal；The a, b, c, d, e are regulation coefficient, and are normal
Number.
4. a kind of driving method of display panel as claimed in claim 3, which is characterized in that the transition chroma signal
The step of the second chroma signal s " is calculated according to tone section correction value in s ' and chroma signal s include:
The second chroma signal s " is calculated in transition chroma signal s ' and chroma signal s according to the following formula:
S "=s+ (s '-s) × H factor；
Wherein, s is chroma signal, and s ' is transition chroma signal, and s " is the second chroma signal, and H factor is abided by
Follow following formula:
5. a kind of driving method of display panel as claimed in claim 3, which is characterized in that the transition chroma signal
The step of the second chroma signal s " is calculated according to tone section correction value in s ' and chroma signal s include:
The second chroma signal s " is calculated in transition chroma signal s ' and chroma signal s according to the following formula:
S "=s+ (s '-s) × Hfactor；
Wherein, s is chroma signal, and s ' is transition chroma signal, and s " is the second chroma signal, and H factor is abided by
Follow following formula:
6. a kind of driving method of display panel as described in claim 4 or 5 any one, which is characterized in that different
Under tone section, tone section correction value is respectively provided with a different weight coefficient A；
When judging tone section locating for the first tone color saturation brightness space signal, when in the first tone color saturation
Tone section locating for brightness space signal is respectively red tone section, green tone section, blue color section, yellow color
When adjusting section, cyan color tone section or fuchsin tone section, the weight multiplied required for the correction value of tone section is respectively Ared、
Agreen、Ablue、Ayellow、AcyanOr Ameganta；
Corresponding red tone section, green tone section, blue color section, yellow tone section, cyan color tone section or ocean
The tone section correction value in red color tone section is H factor × Ared、H factor×Agreen、H factor×Ablue、H
factor×Ayellow、H factor×AcyanOr H factor × Ameganta, wherein at least described red tone section correction value
H factor×AredGreater than the green tone section correction value H factor × Agreen。
7. a kind of driving method of display panel as described in claim 1 or 4 any one, which is characterized in that current color is full
When meeting the tone section of following formula with the tone H value of degree signal s, it is divided into adjustment tone section:
The tone section that tone meets following formula is red tone section: 340≤H, H≤20；
The tone section that tone value meets following formula is yellow tone section: 40≤H≤80；
The tone section that tone value meets following formula is green tone section: 100≤H≤140；
The tone section that tone value meets following formula is cyan color tone section: 160≤H≤200；
The tone section that tone value meets following formula is blue color section: 220≤H≤260；
The tone section that tone value meets following formula is fuchsin tone section: 280≤H≤320.
When the tone H value of current chroma signal s meets the tone section of following formula, it is divided into non-adjustment tone section:
20 < H < 40,80 < H < 100,140 < H < 160,200 < H < 220,260 < H < 280 or 320 < H < 340.
8. a kind of driving method of display panel as described in claim 1 or 5 any one, which is characterized in that current color is full
When meeting the tone section of following formula with the tone H value of degree signal s, it is divided into adjustment tone section: 330≤H, H≤30,30
≤ H≤90,90≤H≤150,150≤H≤210,210≤H≤270 or 270≤H≤330.
9. a kind of drive system of display panel uses a kind of drive of display panel as described in claim 1 to 8 any one
Dynamic method characterized by comprising
Receiving module receives the first chrominance signal, the first chrominance signal is converted into the first brightness normalized signal, according to first
Brightness normalized signal is converted to the first tone color saturation brightness space signal；
Division module, by the first tone color saturation brightness space signal according to tone different demarcation be the first tone, the second color
Tune, third tone, the 4th tone, five colors reconciliation six kinds of tone sections of the 6th tone；
Module is adjusted, preset regulation coefficient is obtained, according to tone zone locating for the first tone color saturation brightness space signal
Between obtain tone section correction value；
Module is obtained, the chroma signal of the first tone color saturation brightness space signal is obtained, uses regulation coefficient and color
It adjusts section correction value to be adjusted chroma signal, obtains the second chroma signal to obtain the second tone color saturation
Brightness space signal；
Computing module turns down the minimum in the first brightness normalized signal according to the second tone color saturation brightness space signal
Value, to obtain the second brightness normalized signal；
Conversion module is converted to the second chrominance signal according to the second brightness normalized signal；And
Drive module drives display panel using the second chrominance signal.
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 with
And display panel.
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