WO2020118926A1 - 显示面板的驱动方法、驱动系统和显示装置 - Google Patents

显示面板的驱动方法、驱动系统和显示装置 Download PDF

Info

Publication number
WO2020118926A1
WO2020118926A1 PCT/CN2019/077603 CN2019077603W WO2020118926A1 WO 2020118926 A1 WO2020118926 A1 WO 2020118926A1 CN 2019077603 W CN2019077603 W CN 2019077603W WO 2020118926 A1 WO2020118926 A1 WO 2020118926A1
Authority
WO
WIPO (PCT)
Prior art keywords
color
color saturation
signal
interval
hue
Prior art date
Application number
PCT/CN2019/077603
Other languages
English (en)
French (fr)
Inventor
康志聪
Original Assignee
惠科股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201811510627.6A external-priority patent/CN109637471B/zh
Priority claimed from CN201811511896.4A external-priority patent/CN109461417B/zh
Application filed by 惠科股份有限公司 filed Critical 惠科股份有限公司
Priority to US17/042,880 priority Critical patent/US11355078B2/en
Publication of WO2020118926A1 publication Critical patent/WO2020118926A1/zh

Links

Images

Classifications

    • 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
    • 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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation

Definitions

  • the present application relates to the technical field of display panels, and in particular, to a driving method, a driving system, and a display device for a display panel.
  • liquid crystal display which include a liquid crystal panel and a backlight module (Backlight Module).
  • Backlight Module The working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates, and apply a driving voltage on the two glass substrates to control the rotation direction of the liquid crystal molecules, so as to refract the light of the backlight module to generate a picture.
  • VA liquid crystal technology has high production efficiency and low manufacturing.
  • the present application provides a driving method, a driving system, and a display device for a display panel to improve color shift.
  • the present application provides a driving method of a display panel, including the steps of:
  • the second color space signal is converted into a second color signal under the RGB system to drive the display panel.
  • the step of adjusting the current color saturation signal using the preset adjustment coefficient is to adjust the color saturation value of all the color saturation signals in the adjustment color adjustment interval according to the preset adjustment coefficient.
  • the step of performing adjustment processing on the current color saturation signal using a preset adjustment coefficient is to perform a color saturation value lowering process on the color saturation signal in the adjusted tone interval according to the preset adjustment coefficient.
  • the color saturation signal is divided into at least a first hue interval, a second hue interval, a third hue interval, and a non-adjusted hue interval according to different hue;
  • the determining whether the hue of the current color saturation signal is within the adjustment color adjustment interval, and if so, the step of acquiring the preset adjustment coefficient corresponding to the current color saturation signal includes:
  • the first tone interval is a red tone interval
  • the second tone interval is a green tone interval
  • the third tone interval is a blue tone interval
  • the preset adjustment coefficients of the color saturation signals having the same color saturation value are different.
  • the color saturation signal is divided into a red hue interval, a green hue interval, a blue hue interval and a non-adjusted hue interval according to different hue intervals;
  • the range of the hue value Hue is: 0-360, corresponding to 0-360 degrees, where:
  • the hue interval where the hue satisfies the following formula is the red hue interval: 0 ⁇ Hue ⁇ 40, or 320 ⁇ Hue ⁇ 360;
  • the tone interval that satisfies the following formula is the green tone interval: 80 ⁇ Hue ⁇ 160;
  • the tone interval that satisfies the following formula is a non-adjusted tone interval: 40 ⁇ Hue ⁇ 80, or 160 ⁇ Hue ⁇ 200, or 280 ⁇ Hue ⁇ 320.
  • the preset adjustment coefficient is calculated according to a preset calculation formula or obtained through an adjustment coefficient lookup table.
  • the adjustment coefficient look-up table is a look-up table directly recording the preset adjustment coefficient, or a look-up table recording the coefficient of the preset calculation formula.
  • the second color space signal and the first color space signal may conform to the following formula:
  • S is the current color saturation signal corresponding to the first color space signal
  • S' is the color saturation signal corresponding to the second color space signal
  • the a, b, c, d, and e are constants
  • the a, b, c, d, e can be obtained through the preset formula coefficient look-up table according to the different color saturation value and hue interval.
  • the step of acquiring preset adjustment coefficients corresponding to the first tonal interval, the second tonal interval, and the third tonal interval includes:
  • the color saturation threshold is 0.5. If the color saturation value of the current color saturation signal is greater than 0.5, it is determined that the color saturation threshold is reached.
  • the color saturation value of the current color saturation signal is less than or equal to 0.5, it is determined that the color saturation threshold has not been reached, and the corresponding color saturation signal is not adjusted or the preset adjustment coefficient is 1.
  • the color saturation threshold is 0.5 to 1, excluding 0.5 and 1.
  • S is set as the current color saturation signal corresponding to the first color space signal
  • S' is the color saturation signal corresponding to the second color space signal
  • H is a preset adjustment coefficient
  • This application also provides a display panel drive system, including:
  • Receive circuit preset adjustment coefficient calculation circuit, adjustment circuit and drive circuit
  • the receiving circuit receives the first color signal under the RGB system and converts the first color signal into the first color space signal under the HSV system; the preset adjustment coefficient calculation circuit obtains the current color of the first color space signal A saturation signal, and determine whether the hue of the current color saturation signal is within the adjustment color adjustment interval, and if so, acquire the preset adjustment coefficient corresponding to the current color saturation signal; the adjustment circuit uses the preset adjustment coefficient to adjust the current color Adjust the saturation signal; complete the adjustment of the color saturation signal to obtain the second color space signal under the HSV system; the drive circuit uses the second color space signal to convert to the second color signal under the RGB system to drive the display panel.
  • the present application also discloses a display device including a display panel driving system as described in the present application, the driving system including a receiving circuit, a preset adjustment coefficient calculation circuit, an adjustment circuit and a drive circuit;
  • the receiving circuit receives the first color signal under the RGB system and converts the first color signal into the first color space signal under the HSV system; the preset adjustment coefficient calculation circuit obtains the current color of the first color space signal A saturation signal, and determine whether the hue of the current color saturation signal is within the adjustment color adjustment interval, and if so, acquire the preset adjustment coefficient corresponding to the current color saturation signal; the adjustment circuit uses the preset adjustment coefficient to adjust the current color Adjust the saturation signal; complete the adjustment of the color saturation signal to obtain the second color space signal under the HSV system; the drive circuit uses the second color space signal to convert to the second color signal under the RGB system to drive the display panel.
  • the color saturation signal is relatively severe in certain tone intervals, while in other tone intervals, the color deviation is not obvious, and even falls within the acceptable range; Apply to obtain the current color saturation signal, and divide it into at least one part within the adjustment color adjustment interval and another part outside the adjustment color adjustment interval according to the corresponding hue; the color saturation signal corresponding to the adjustment color adjustment interval will obtain the current The preset adjustment coefficient corresponding to the color saturation signal, and adjust the color saturation, so as to control the color saturation signal with serious color cast to the area with less serious color cast, thereby improving the color cast, and less serious for the color cast , That is, the color saturation signal outside the tonal range to be adjusted, you can reduce the amplitude of the adjustment or even not adjust it, so as to improve the color deviation, at the same time, reduce the color saturation adjustment as much as possible, thus avoiding the color saturation rendering Excessive damage to achieve the balance of color shift and color saturation, which is conducive to improving the display effect; and, this solution
  • FIG. 1 is a schematic diagram showing the change of the character deviation of the large angle of view and frontal view of various representative color systems of a liquid crystal display
  • FIG. 2 is a first schematic diagram of dividing an original pixel into a primary and secondary pixel in an exemplary solution
  • FIG. 3 is a second schematic diagram of dividing an original pixel into a primary and secondary pixel in an exemplary solution
  • FIG. 4 is a flowchart of a driving method of a display panel according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of color difference changes of the current color saturation signal and the second color saturation signal according to an embodiment of the present application
  • FIG. 8 is a schematic diagram of a driving system of a display panel according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a display device according to an embodiment of the present application.
  • VA Vertical Alignment, vertical alignment technology
  • Figure 1 is a schematic diagram of the large angle of view and the frontal view of the deviation of the role of the front view of the various representative color systems of the liquid crystal display.
  • the ordinate indicates the degree of color shift. Partial situation is serious with other colors.
  • An exemplary solution is to subdivide the RGB (Red, Green, Blue) sub-pixels into main/sub pixels, so that the overall large viewing angle brightness changes with voltage close to the front view.
  • FIG. 2 is a first comparison diagram that does not distinguish between primary and secondary pixels and distinguishes between primary and secondary pixels
  • FIG. 3 is a second comparison diagram that does not distinguish between primary and secondary pixels and distinguishes between primary and secondary pixels.
  • the The x-coordinate, y-coordinate and z-coordinate respectively represent the three directions of the three-dimensional space; the ⁇ A represents the pretilt angle at which the main pixel is under a large voltage, and the ⁇ B represents the pretilt angle at which the subpixel is under a small voltage.
  • the abscissa in FIG. 3 is a gray-scale signal, and the ordinate is a luminance signal. At a large viewing angle, the luminance quickly saturates with the signal, causing a large visual role deviation (FIG. 3, the arc segment on the left), and Distinguishing between primary and secondary pixels can improve color cast to some extent.
  • the original signal into primary and secondary pixels of large voltage + small voltage. Face the large voltage plus the small voltage to maintain the original face-up signal changes with brightness, and the side-view brightness seen by the large voltage changes with gray scale.
  • the side-view brightness seen with a small voltage changes with gray scale as shown in PART 3 in Figure 3.
  • the brightness of the side-view synthesis changes with the gray scale as the left arc, close to the right line.
  • the relationship between the brightness of the front view and the gray scale changes, so the relationship between the viewing angle brightness and the signal is close to the front view.
  • the original signal brightness changes with the signal, making the viewing angle Get improved.
  • the primary and secondary pixels in the space are given different driving voltages to solve the defect of visual role bias.
  • TFT Thin Film Transistor
  • FIG. 4 is a flowchart of a display panel driving method of the present application. As shown in FIG. 4, an embodiment of the present application discloses a display panel driving method, including steps:
  • S11 Receive the first color signal under the RGB system, and convert the first color signal into the first color space signal under the HSV system;
  • S15 Use the second color space signal to convert to the second color signal under the RGB system to drive the display panel.
  • the driving system using the driving method can be set at the front end and in the timing control chip of the display panel.
  • the timing control chip also stores a lookup table of preset adjustment coefficients related to the performance of the display panel corresponding to the driving system And other parameters.
  • the color saturation signal is relatively severe in certain tone intervals, while in other tone intervals, the color deviation is not obvious, and even falls within the acceptable range; Apply to obtain the current color saturation signal, and divide it into at least one part within the adjustment color adjustment interval and another part outside the adjustment color adjustment interval according to the corresponding hue; the color saturation signal corresponding to the adjustment color adjustment interval will obtain the current The preset adjustment coefficient corresponding to the color saturation signal, and adjust the color saturation, so as to control the color saturation signal with serious color cast to the area with less serious color cast, thereby improving the color cast, and less serious for the color cast , That is, the color saturation signal outside the tonal range to be adjusted, you can reduce the amplitude of the adjustment or even not adjust it, so as to improve the color deviation, try to reduce the color saturation adjustment as much as possible, thus avoiding the color saturation rendering Excessive damage to achieve the balance of color shift and color saturation, which is conducive to improving the display effect; and, this solution is not
  • the step of the adjustment process is to adjust the color saturation value according to a preset adjustment coefficient for all color saturation signals located in the adjustment color adjustment interval.
  • the step of the adjustment process is to perform a process of adjusting the color saturation value in accordance with a preset adjustment coefficient for the color saturation signal in the adjusted hue interval.
  • the higher the color saturation value the more serious the color shift.
  • the lower the color saturation value can reduce the degree of color shift.
  • the adjustment operation of the color saturation is to lower the color saturation value of the color saturation signal located in the adjusted hue interval; in this way, the color saturation value of the second color signal under the RGB system can be lowered, thereby To prevent the color saturation value of the corresponding color signal from being too high and causing color shift, improve the display panel, especially the VA panel's large-vision role shift.
  • the color saturation signal is divided into at least a first hue interval, a second hue interval, a third hue interval, and a non-adjusted hue interval according to hue differences;
  • the determining whether the hue of the current color saturation signal is within the adjustment color adjustment interval, and if so, the step of acquiring the preset adjustment coefficient corresponding to the current color saturation signal includes:
  • the step of acquiring the preset adjustment coefficients corresponding to the first tonal interval, the second tonal interval, and the third tonal interval includes:
  • the preset adjustment coefficient corresponding to the current color saturation signal is obtained according to the hue interval and the color saturation value.
  • the tonal interval to be adjusted includes a red tonal interval, a green tonal interval, and a blue tonal interval.
  • Each hue interval has a different relationship between the change of the color saturation value and the degree of color shift; corresponding to different hue intervals, hue Value and color saturation value to obtain preset adjustment coefficients, you can make targeted adjustments to the corresponding color saturation signal to achieve a better improvement of the color shift effect.
  • the color saturation signal of this part needs to first meet the hue interval, and then also meet the color saturation threshold; this is under the same hue, although there are some colors
  • the saturation signal is in the adjusted hue interval, the color saturation value is very low, and the corresponding color shift degree may be within an acceptable range, and because the same color tone, the higher the color saturation value, the more serious the color shift, For example, if the color saturation signal of the blue primary hue at a 240-degree hue is greater than 0.5, the color shift is severe and adjustment is required. If the color saturation value is less than 0.5, the color shift may be less severe.
  • the first tone interval is a red tone interval
  • the second tone interval is a green tone interval
  • the third tone interval is a blue tone interval
  • this solution since the same color tone interval, especially in the same color tone, the higher the color saturation value of the color saturation signal, the more severe the corresponding color shift; therefore, this solution has a large adjustment range for signals with high color saturation,
  • the adjustment range of the signal with low color saturation value is small; among them, the color saturation value signal is processed to reduce the color saturation value to reduce the color saturation gap of each signal and avoid the color deviation caused by too high color saturation. At the same time, it avoids the color shift caused by the excessive difference in color saturation and achieves a better effect of improving the color shift.
  • the color saturation signal with a low color saturation value may also be adjusted up, so that different color saturation signals are more uniform, and the color shift is also improved to a certain extent.
  • the adjustment amplitude here mainly refers to lowering the amplitude of the color saturation signal.
  • the preset adjustment coefficients corresponding to the current color saturation signals having the same color saturation value are different.
  • the degree of color misregistration based on the color saturation signals of different hue intervals is different. Under the same color saturation value, some of the hue intervals are severely distorted, and some of the hue intervals are lighter. Obvious hue interval, the corresponding color saturation signal can be greatly reduced, and for the hue interval where the color cast is not so obvious, a small amplitude can be adjusted down to get a better improvement in color cast; of course, for If the hue interval is not so severe, if the preset threshold is not reached, it is also possible to increase the color saturation value to some extent.
  • the degree of color shift of the color saturation signals based on different tone intervals is different. Under the same color saturation value, the color deviation of some tone intervals is serious, and the color of some tone intervals is light; corresponding to the RGB system, specific , The color shift of the color saturation signal in the blue hue interval is the most serious, and the color shift of the color saturation signal in the green hue interval is the lightest; in this solution, for the color saturation signal that meets the preset threshold and the color shift is serious, according to the color For different degrees of deviation, different preset adjustment coefficients are preset.
  • the adjustment amplitude of the preset adjustment coefficient corresponding to the blue hue interval to the current color saturation signal is greater than the preset adjustment coefficient corresponding to the red hue interval
  • the adjustment range of the current color saturation signal; the adjustment range of the preset adjustment coefficient corresponding to the red hue interval to the current color saturation signal is greater than that of the preset adjustment coefficient corresponding to the green hue interval to the current color saturation signal Adjust the amplitude.
  • the signal with the highest color saturation value has the largest reduction in amplitude
  • the signal with the smallest color saturation value has the smallest reduction in amplitude, which reduces the color shift caused by too large a color saturation value and makes the color saturation signal color saturated
  • the degree is more uniform, to a certain extent, it is also conducive to improving color shift, so as to achieve a good effect of improving color shift.
  • the preset adjustment coefficient corresponding to the blue tone interval may be smaller than the preset adjustment coefficient corresponding to the red tone interval, and the preset adjustment coefficient corresponding to the red tone interval may be smaller than that corresponding to the green tone interval
  • the preset adjustment coefficient, the smaller the preset adjustment coefficient, the greater the adjustment range; correspondingly, taking S' 1-min*H/max as an example, the preset adjustment coefficient corresponding to the blue hue interval is the largest at this time
  • the adjustment range is the largest, the preset adjustment coefficient corresponding to the green tone interval is the smallest and the adjustment range is the smallest.
  • the color saturation signal is divided into a red hue interval, a green hue interval, a blue hue interval and a non-adjusted hue interval according to different hue intervals;
  • the range of the hue value Hue is: 0-360, corresponding to 0-360 degrees, where:
  • the hue interval where the hue satisfies the following formula is the red hue interval: 0 ⁇ Hue ⁇ 40, or 320 ⁇ Hue ⁇ 360;
  • the tone interval that satisfies the following formula is the green tone interval: 80 ⁇ Hue ⁇ 160;
  • the tone interval that satisfies the following formula is a non-adjusted tone interval: 40 ⁇ Hue ⁇ 80, or 160 ⁇ Hue ⁇ 200, or 280 ⁇ Hue ⁇ 320.
  • 0 degrees is defined as a red hue, 120 degrees as a green hue, and 240 degrees as a blue hue.
  • the green hue is divided into the green hue interval and will be close to
  • the blue hue is divided into the blue hue interval, and the red hue is divided into the red hue interval; and the blue hue away from the red, green and blue hue is divided into the non-adjustment interval, so that it can correspond to the same color saturation value, and the color deviation is the most
  • the severe blue hue interval corresponds to setting the largest preset adjustment coefficient; the lighter green hue interval corresponds to setting a smaller preset adjustment coefficient; and for the non-adjustment interval where there is almost no color deviation, no adjustment or Set the preset adjustment coefficient to 1, so as to improve the
  • the color saturation threshold is 0.5. If the color saturation value of the current color saturation signal is greater than 0.5, it is determined that the color saturation threshold is reached;
  • the color saturation value of the current color saturation signal is less than or equal to 0.5, it is determined that the color saturation threshold has not been reached, and the corresponding color saturation signal is not adjusted or the preset adjustment coefficient is 1.
  • the color saturation threshold may be 0.5 to 1, excluding 0.5 and 1, that is, when the current color saturation signal is 1, the second color saturation signal may not be adjusted; of course, adjustment is also possible, according to specific requirements , The color saturation threshold can be adjusted accordingly.
  • the color saturation signal is divided into a part where the color saturation value meets the preset threshold, and another case where the color saturation value does not meet the preset threshold Part; specifically, set the preset threshold to 0.5, in this way, you can select excellent color saturation signal to adjust, and the color saturation signal with light color or even no color shift is not adjusted, While improving the color shift, try to avoid the reduction of the color saturation value to achieve the balance of color shift and color saturation, so as to achieve a better display effect.
  • the preset adjustment coefficient is calculated according to a preset calculation formula or obtained through an adjustment coefficient lookup table.
  • the corresponding calculation formula or adjustment coefficient look-up table is obtained through advance testing or calculation.
  • it can be based on the difference of the color saturation signal (color saturation value, hue interval, etc.) )
  • the adjustment coefficient lookup table may be a lookup table directly recording the preset adjustment coefficient, or a lookup table recording the coefficient of the preset calculation formula.
  • the second color space signal and the first color space signal may conform to the following formula:
  • S is the current color saturation signal corresponding to the first color space signal
  • S' is the color saturation signal corresponding to the second color space signal
  • the a, b, c, d, and e are constants
  • the a, b, c, d, e can be obtained through the preset formula coefficient look-up table according to the different color saturation value and hue interval.
  • the preset adjustment coefficient can be calculated according to a preset calculation formula.
  • the calculation formula is different, it can be satisfied with a fourth-degree polynomial, where the constant coefficients a, b, c, d, e are based on the color saturation
  • the value and the hue interval are different, and it can be obtained through a preset lookup table; of course, other calculation formulas are also applicable, for example, when the color saturation value S meets certain conditions, the preset adjustment coefficient is equal to the root number S; when the color is saturated When the degree value S satisfies another condition, it is also possible that the preset adjustment coefficient is equal to the third radical S and other formulas.
  • FIG. 5 is a schematic diagram of changes in the current color saturation signal and the second color saturation signal according to an embodiment of the present application
  • FIG. 6 is a color difference curve of the current color saturation signal and the second color saturation signal in the embodiment of the present application
  • 7 is a schematic diagram of color difference changes of the current color saturation signal and the second color saturation signal according to an embodiment of the present application.
  • the chromatic aberration change chart of FIG. 6 may be in the case of a positive viewing angle. Of course, it can also be in the case of a side view.
  • the dotted line in FIG. 7 is the corresponding color difference change of the current color saturation signal under various color systems, and the solid line is the corresponding color difference change of the second color saturation signal under various color systems.
  • the display's input signal RGB three primary color signals if the display is driven with 8-bit color resolution, the tone of the RGB three primary color input signal can be decomposed into 0,1,2...255 gray-scale drive signals.
  • This application converts RGB three primary color input signals into HSV color space signals, and adjusts the color saturation according to different hue and color saturation values in the HSV color space to achieve the effect of improving color shift.
  • the input signals of the RGB three primary colors are 8-bit gray-scale digital signals of 0, 1, ... 255, and each gray-scale signal corresponds to the luminance normalized signal of the 255 input signal (with 255 gray-scale as the maximum brightness) respectively r, g, and b .
  • H is a tone signal
  • r, g, and b normalized brightness signals are converted into hue h and saturation s signals.
  • H represents the color, from 0 degrees to 360 degrees represents different hue colors, where 0 degrees is defined as red, 120 degrees is green, and 240 degrees is blue.
  • R is the red grayscale digital signal
  • G is the green grayscale digital signal
  • B is the blue grayscale digital signal
  • min is the minimum value of r, g, b
  • max is the maximum value of r, g, b .
  • r, g, b normalize the conversion relationship between the luminance signal and the hue h and saturation signal s, satisfying the following formula:
  • a detection step can be added, for example, to convert the color saturation signal to a CIE Lu'v' color space signal (CIE, Commission Internationale L'Eclairage, International Lighting Commission), where L is the luminance coordinate, u'and v'are the chromaticity coordinate.
  • CIE Commission Internationale L'Eclairage, International Lighting Commission
  • L the luminance coordinate
  • the color saturation adjustment processes the current color saturation signal to reduce the color saturation value, but if it is to minimize the loss of color saturation, the pure color changes from the current color saturation signal S to the second
  • the change of the color saturation signal S' that is, the change in purity or the color difference, should satisfy:
  • ⁇ uv ⁇ ((u_1-u_2) ⁇ 2+(v_1-v_2) ⁇ 2) ⁇ 0.02.
  • u_1 and v_1 are the chromaticity coordinates of the current color saturation signal
  • u_2 and v_2 are the chromaticity coordinates of the second color saturation signal, that is, the chromaticity coordinates of the color saturation signal after the color saturation adjustment.
  • FIG. 8 is a schematic diagram of a display panel driving system of the present application. Referring to FIG. 8, in conjunction with FIGS. 1 to 7, it can be seen that the present application also discloses a display panel driving system 100, using a A driving method of a display panel, the driving system 100 includes:
  • the receiving circuit 110 receives the first color signal under the RGB system and converts the first color signal into the first color space signal under the HSV system; the preset adjustment coefficient calculation circuit 120, the adjustment circuit 130 and the driving circuit 140;
  • the preset adjustment coefficient calculation circuit 120 acquires the current color saturation signal of the first color space signal, and determines whether the hue of the current color saturation signal is within the adjustment color adjustment interval, and if so, acquires the current color saturation signal corresponding to The preset adjustment coefficient; the adjustment circuit 130 uses the preset adjustment coefficient to adjust the current color saturation signal; completes the color saturation signal adjustment processing to obtain the second color space signal under the HSV system; The driving circuit 140 converts the second color space signal into a second color signal under the RGB system to drive the display panel.
  • FIG. 9 is a schematic diagram of a display device of the present application. Referring to FIG. 9, in conjunction with FIGS. .
  • the technical solution of the present application can be widely used in various display panels, such as TN type display panel (full name Twisted Nematic, namely twisted nematic panel), IPS type display panel (In-Plane Switching, plane conversion), VA type display Panel (Vertical Alignment, vertical alignment technology), MVA type display panel (Multi-domain Vertical Alignment, multi-quadrant vertical alignment technology), of course, it can also be other types of display panels, such as organic light-emitting display panel (organic light-emitting diode) , Referred to as OLED display panel), can apply the above solutions.
  • OLED display panel organic light-emitting diode

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种显示面板的驱动方法、驱动系统（100）和显示装置（200），包括步骤：接收第一颜色信号，转换为第一色彩空间信号；获取当前色饱和度信号，并判断是否在调整色调整区间内，若在则获取预设调整系数；对当前色饱和度信号进行调整处理得到第二色彩空间信号；转换为RGB体系下的第二颜色信号驱动显示面板。

Description

显示面板的驱动方法、驱动系统和显示装置
本申请要求于2018年12月11日提交中国专利局，申请号为CN201811510627.6，申请名称为“一种显示面板的驱动方法、驱动系统和显示装置”，以及于2018年12月11日提交中国专利局，申请号为CN201811511896.4，申请名称为“一种显示面板的驱动方法、驱动系统和显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示面板技术领域，尤其涉及一种显示面板的驱动方法、驱动系统和显示装置。
背景技术
这里的陈述仅提供与本申请有关的背景信息，而不必然地构成现有技术。
随着科技的发展和进步，液晶显示器由于具备机身薄、省电和辐射低等热点而成为显示器的主流产品，得到了广泛应用。市场上的液晶显示器大部分为背光型液晶显示器，其包括液晶面板及背光模组(Backlight Module)。液晶面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，并在两片玻璃基板上施加驱动电压来控制液晶分子的旋转方向，以将背光模组的光线折射出来产生画面。
现行大尺寸液晶显示面板多半采用VA(Vertical Alignment，垂直配向技术)液晶或IPS(In-Plane Switching，平面转换)液晶技术，VA型液晶技术相比于IPS液晶技术存在高的生产效率及低制造成本的优势，但光学性质上相比于IPS液晶技术存在明显的光学性质缺陷；即，一些大尺寸显示面板，特别是VA型液晶驱动在大视角亮度随电压快速饱和，造成视角画质对比及色偏相比于正视画质品质恶化严重，即存在大视角色偏。
发明内容
本申请提供了一种显示面板的驱动方法、驱动系统和显示装置以改善色偏。
为实现上述目的，本申请提供了一种显示面板的驱动方法，包括步骤：
接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；
获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；
使用预设调整系数对当前色饱和度信号进行调整处理；
完成色饱和度信号的调整处理，得到在HSV体系下的第二色彩空间信号；
使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
可选的，所述使用预设调整系数对当前色饱和度信号进行调整处理的步骤是将所有位于调整色调整区间的色饱和度信号都根据预设调整系数进行色饱和度值的调整处理。
可选的，所述使用预设调整系数对当前色饱和度信号进行调整处理的步骤是将在调整色调区间的色饱和度信号根据预设调整系数进行色饱和度值的调低处理。
可选的，所述色饱和度信号根据色调不同至少拆分为第一色调区间、第二色调区间、第三色调区间和非调整色调区间；
所述判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数的步骤包括：
判断当前色饱和度信号对应的色调是否在第一色调区间、第二色调区间、第三色调区间内，若是，则获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数；
若在非调整色调区间内，则判定不在待调整色调区间内，则对对应的色饱和度信号不做调整处理或预设调整系数为1。
可选的，所述第一色调区间为红色色调区间、第二色调区间为绿色色调区间和第三色调区间为蓝色色调区间；
位于同一色调的所述色饱和度信号，色饱和度值越大，调整处理的调整幅度越大。
可选的，所述获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数的步骤中：
对应所述第一色调区间、第二色调区间和第三色调区间，具有同一色饱和度值的所述色饱和度信号的预设调整系数不同。
可选的，所述色饱和度信号根据色调区间不同拆分为红色色调区间、绿色色调区间、蓝色色调区间和非调整色调区间；
所述色调值Hue的范围为：0-360，对应0-360度，其中：
色调满足如下公式的色调区间为红色色调区间：0≤Hue＜40，或320＜Hue≤360；
色调值满足如下公式的色调区间为绿色色调区间：80＜Hue＜160；
将色调值满足如下公式的色调区间划分为蓝色色调区间：200＜Hue＜280；
色调值满足如下公式的色调区间为非调整色调区间：40≤Hue≤80，或160≤Hue≤200，或280≤Hue≤320。
可选的，所述预设调整系数，根据预设的计算公式计算得到或通过调整系数查找表查找得到。
可选的，所述调整系数查找表是直接记载有预设调整系数的查找表，或是记录预设的计算公式的系数的查找表。
可选的，第二色彩空间信号和第一色彩空间信号可以符合如下公式：
S’＝a*S4+b*S3+c*S2+d*S+e；
其中，S为第一色彩空间信号对应的当前色饱和度信号，S’为第二色彩空间信号对应的色饱和度信号；所述a,b,c,d,e为常数，所述a,b,c,d,e根据色饱和度值和色调区间不同，通过预设的公式系数查找表查找得到。
可选的，所述若是，则获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数的步骤包括：
判断当前色饱和度信号对应的色调是否在红色色调区间、绿色色调区间和蓝色色调区间内，若是，则判定在调整色调整区间；以及
判断在调整色调整区间的色饱和度信号的色饱和度值是否达到预设阈值；若达到，则根据色调区间和色饱和度值获取当前色饱和度信号对应的预设调整系数。
可选的，所述在判断当前色饱和度信号的色饱和度值是否达到预设阈值的步骤中：
色饱和度阈值为0.5，若当前色饱和度信号的色饱和度值大于0.5，则判定达到色饱和度阈值。
可选的，若当前色饱和度信号的色饱和度值小于等于0.5，则判定未达到色饱和度阈值，对对应的色饱和度信号不做调整处理或预设调整系数为1。
可选的，所述色饱和度阈值为0.5至1，不包括0.5和1。
可选的，设定S为第一色彩空间信号对应的当前色饱和度信号，S’为第二色彩空间信号对应的色饱和度信号，H为预设调整系数，则：S’＝S*H。
本申请还提供了一种显示面板的驱动系统，包括：
接收电路、预设调整系数计算电路、调整电路以及驱动电路；
所述接收电路接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；所述预设调整系数计算电路获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；所述调整电路使用预设调整系数对当前色饱和度信号进行调整处理；完成色饱和度信号的调整处理，得到在HSV体系下的第二色彩空间信号；所述驱动电路使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
本申请还公开了一种显示装置，包括如本申请所述的一种显示面板的驱动系统，所述驱动系统包括接收电路、预设调整系数计算电路、调整电路和驱动电路；
所述接收电路接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；所述预设调整系数计算电路获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；所述调整电路使用预设调整系数对当前色饱和度信号进行调整处理；完成色饱和度信号的调整处理，得到在HSV体系下的第二色彩空间信号；所述驱动电路使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
本申请中，基于RGB色系下的颜色信号，色饱和信号在某些色调区间内，色偏相对严重，而在另一些色调区间内，则色偏不明显，甚至属于可以接受的范围；本申请，获取当前色饱和度信号，根据对应的色调不同，至少划分为调整色调整区间内的一部分，以及调整色调整区间之外的另一部分；对应位于调整色调整区间的色饱和信号将获取当前色饱和度信号对应的预设调整系数，并进行色饱和度调整，从而将色偏严重的色饱和度信号控制在色偏不那么严重的区域，从而改善色偏，而对于色偏不那么严重的、即待调整色调区间以外的色饱和度信号，则可以减少调整的幅度甚至不进行调整，这样再改善色偏的同时，尽量的减少了色饱和度的调整，从而避免了色饱和度呈现的过度损伤，达到色偏和色饱和度的平衡，有利于提高显示效果；并且，本方案并不以牺牲可透光开口区为基础，因而，可以避免光透率的降低，避免显示面板生产成本的提升。
附图说明
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是液晶显示器各种代表性色系的大视角与正视视角色偏变化示意图；
图2是示例性方案中，将原像素划分为主次像素的第一示意图；
图3是示例性方案中，将原像素划分为主次像素的第二示意图；
图4是是本申请实施例一种显示面板的驱动方法的流程图；
图5是是本申请实施例的当前色饱和度信号和第二色饱和度信号的变化示意图；
图6是本申请实施例的当前色饱和度信号和第二色饱和度信号的色差变化曲线图；
图7是本申请实施例的当前色饱和度信号和第二色饱和度信号的色差变化示意图；
图8是本申请实施例一种显示面板的驱动系统示意图；
图9是本申请实施例一种显示装置的示意图。
具体实施方式
这里所公开的具体结构和功能细节仅仅是代表性的，并且是用于描述本申请的示例性实施例的目的。但是本申请可以通过许多替换形式来具体实现，并且不应当被解释成仅仅受限于这里所阐述的实施例。
下面结合附图和实施例对本申请作进一步说明。
大尺寸液晶显示面板，特别是VA(Vertical Alignment，垂直配向技术)型液晶显示面板，对应的大视角亮度随电压快速饱和，造成视角画质对比及色偏相比于正视画质品质恶化严重。
图1是液晶显示器各种代表性色系的大视角与正视视角色偏变化示意图，参考图1，纵坐标表示色偏程度，可以明显发现，偏R、G、B色相的色系大视角色偏情况均其他色系来得严重。示范性的解决方案是通过将将RGB(Red、Green、Blue)各子像素再划分为主/次像素(Main/Sub)，使得整体大视角亮度随电压变化接近正视。
图2是不区分主次像素和区别主次像素的第一对比示意图，图3是是不区分主次像素和区别主次像素的第二对比示意图，参考图2和图3可知，其中，该x坐标，y坐标和z坐标，分别代表三维空间的三个方向；该θA表示其中主像素大电压下的预倾导角，该θB表示其中次像素小电压下的预倾导角。其中，该图3中的横坐标为灰阶信号，而纵坐标为亮度信号，在大视角下，亮度随信号快速饱和，造成大视角色偏(图3，左侧的弧线段)，而区分主次像素可以在一定程度上改善色偏。
具体的，将原信号分成大电压+小电压的主次像素，正视大电压加上小电压要维持原正视信号随亮度变化,大电压看到的侧视亮度随灰阶变化图3中的PART A，小电压看到的侧视亮度随灰阶变化如图3中的PART B。这样侧视合成看起来的亮度随灰阶变化就如左侧弧线，贴近右侧直线正视亮度随灰阶变化的关系,所以视角亮度随信号变化关系接近正视原信号亮度随信号变化,使得视角获得改善。
这种藉由空间上主次像素给予不同的驱动电压来解决视角色偏得缺陷，这样得pixel设计往往需要再设计金属走线或TFT(薄膜晶体管，Thin Film Transistor)元件来驱动次像素，造成可透光开口区牺牲，影响面板穿透率，直接造成背光成本的提升。
因而，本申请基于不同的技术构思，改进得到如下的方案：
图4是本申请一种显示面板的驱动方法的流程图，如图4所示，本申请实施例公布了一种显示面板的驱动方法，包括步骤：
S11：接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；
S12:获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；
S13:使用预设调整系数对当前色饱和度信号进行调整处理；
S14:完成色饱和度信号的调整处理，得到在HSV(Hue,Saturation,Value)体系下的第二色彩空间信号；以及
S15:使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
其中，使用该驱动方法的驱动系统，可以设置在前端，设置在显示面板的时序控制芯片内，时序控制芯片内还存储有与该驱动系统对应的显示面板的性能相关的预设调整系数查找表等参数。
具体的，接收在RGB体系下的第一颜色信号；
获取第一颜色信号Rn_i,j、Gn_i,j、Bn_i,j，并将每一组RGB三原色子像素灰阶信号转换成三原色归一化亮度信号r、g、b；完成转换得到第一归一化亮度信号rn_i,j、gn_i,j、bn_i,j；
根据第一归一化亮度信号计算当前色饱和度信号S＝1-mini,j/maxi,j，获取当前色饱和度信号S对应的预设调整系数H；
保持maxi,j不变，使用预设调整系数H对mini,j进行调整处理，得到第二色饱和度信号S’＝1-mini,j*H/maxi,j；
根据第二色饱和度信号S’转换得到RGB体系下的第二颜色信号以驱动显示面板；
其中，mini,j＝min(rn_i,j、gn_i,j、bn_i,j)，其中，maxi,j＝max(rn_i,j、gn_i,j、bn_i,j)。
本申请中，基于RGB色系下的颜色信号，色饱和信号在某些色调区间内，色偏相对严重，而在另一些色调区间内，则色偏不明显，甚至属于可以接受的范围；本申请，获取当前色饱和度信号，根据对应的色调不同，至少划分为调整色调整区间内的一部分，以及调整色调整区间之外的另一部分；对应位于调整色调整区间的色饱和信号将获取当前色饱和度信号对应的预设调整系数，并进行色饱和度调整，从而将色偏严重的色饱和度信号控制在色偏不那么严重的区域，从而改善色偏，而对于色偏不那么严重的、即待调整色调区间以外的色饱和度信号，则可以减少调整的幅度甚至不进行调整，这样在改善色偏的同时，尽量的减少了色饱和度的调整，从而避免了色饱和度呈现的过度损伤，达到色偏和色饱和度的平衡，有利于提高显示效果；并且，本方案并不以牺牲可透光开口区为基础，因而，可以避免光透率的降低，避免显示面板生产成本的提升。
在一实施例中，该调整处理的步骤是将所有位于调整色调整区间的色饱和度信号都根据预设调整系数进行色饱和度值的调整处理。
本方案中，对所有色调位于调整色调整区间的色饱和度信号都分别根据对应的预设调整系数进行调整处理，鉴于位于待调整色调区间的色饱和度信号的色偏相对严重，都进行调整处理后，可以好的改善色偏；并且，都进行调整，方便控制信号的色饱和度的均匀性，有利于提高显示面板的显示效果。
在一实施例中，该调整处理的步骤是将在调整色调区间的色饱和度信号根据预设调整系数进行色饱和度值的调低处理。
本方案中，鉴于位于调整色调区间的色饱和度信号都存在相当的色偏，基于同一色调下，色饱和度值越高色偏越严重的发现，降低色饱和度值可以减少色偏的程度；该色饱和度的调整操作是对位于调整色调区间的色饱和度信号进行色饱和度值的调低处理；如此，便可以调低RGB体系下的第二颜色信号的色饱和度值，从而避免对应的颜色信号存在色饱和度值过高而导致色偏，改善显示面板，特别是VA型面板的大视角色偏。
在一实施例中，该色饱和度信号根据色调不同至少拆分为第一色调区间、第二色调区间、第三色调区间和非调整色调区间；
所述判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数的步骤包括：
判断当前色饱和度信号对应的色调是否在第一色调区间、第二色调区间、第三色调区间内，若是，则获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数；
若在非调整色调区间内，则判定不在待调整色调区间内，则对对应的色饱和度信号不做调整处理或预设调整系数为1。
在一实施例中，若是，则获取第一色调区间、第二色调区间、第三色调区间对应的预设 调整系数的步骤包括：
判断当前色饱和度信号对应的色调是否在红色色调区间、绿色色调区间和蓝色色调区间内，若是，则判定在调整色调整区间；
判断在调整色调整区间的色饱和度信号的色饱和度值是否达到预设阈值；
若达到，则根据色调区间和色饱和度值获取当前色饱和度信号对应的预设调整系数。
本方案中，该待调整色调区间包括红色色调区间、绿色色调区间和蓝色色调区间，每个色调区间色饱和度值的变化与色偏程度的变化关系不同；分别对应不同的色调区间、色调值和色饱和度值来获取预设调整系数，可以对对应的色饱和度信号进行针对性的调整，达到更好的改善色偏效果。
具体的，本方案中仅部分色饱和度信号会进行调整操作，该部分的色饱和度信号，首先需要满足色调区间，然后还要满足色饱和度阈值；这是同一色调下，虽然有一些色饱和信号虽然位于调整色调区间内，但是色饱和度值很低，对应的色偏程度可能在可以被接受的范围内，并且，由于同一色调下，色饱和度值越高，色偏越严重，例如，位于240度色调的蓝色主色调的色饱和信号，若是色饱和度值大于0.5，则色偏严重需要进行调整，而若是色饱和度值小于0.5，则可能色偏不那么严重，可以不进行调整；因此，仅对位于待调整色调区间，且色饱和度值超过预设阈值的色饱和信号进行调整，例如降低色饱和度值的处理，而不需要进行色偏调整的则保持原有的色饱和度值，如此不仅可以在改善色偏的同时，而且避免色饱和度的降低，有利于显示效果的提升。
在一实施例中，在本申请的拆分色调区间的步骤中，第一色调区间为红色色调区间、第二色调区间为绿色色调区间和第三色调区间为蓝色色调区间；
位于同一色调的所述色饱和度信号，色饱和度值越大，调整处理的调整幅度越大。
本方案中，由于同一色调区间，特别是同一色调下，色饱和度信号的色饱和度值越高，对应的色偏越严重；因而，本方案对色饱和度高的信号的调整幅度大，而色饱和度值低的信号的调整幅度小；其中，对色饱和度信号进行色饱和度值的调低处理，减少各个信号的色饱和差距，避免色饱和度太高带来的色偏，同时，避免色饱和度差异过大带来的色偏，达到更好的改善色偏的效果。当然，该色饱和度值低的色饱和度信号进行调高处理也是可以的，以使得不同的色饱和度信号之间更均匀，也在一定程度上改善色偏。
另外，这里的调整幅度主要指的是调低色饱和度信号的幅度，根据计算公式的不同，色饱和度值越大，对应的预设调整系数也可能越小也可能越大，但是调整幅度越大的效果是不变的；举例，如果该预设调整系数是整个色饱和度信号的系数，例如S’＝S*H(其中，S为当前色饱和度信号或者说S为第一色彩空间信号对应的当前色饱和度信号，S’为调整后的色饱和度信号或者说S’为第二色彩空间信号对应的色饱和度信号，H为预设调整系数，)，则调低幅度越大时，预设调整系数的值越小；如果预设调整系数是色饱和度信号其中某个参数的系数时，则调低幅度越大，对应的系数也可能是越大的，例如S’＝1-min*H/max(其中，S为当前色饱和度信号或者说S为第一色彩空间信号对应的当前色饱和度信号，S’为调整后的色饱和度信号或者说S’为第二色彩空间信号对应的色饱和度信号，H为预设调整系数，min和max是RGB三原色信号转换为HSV体系信号时，亮度归一化信号r,g,b中对应最小值和最大值)时，此时的预设调整系数越大，对应的调低幅度越大。
在一实施例中，获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数的步骤中：
对应所述第一色调区间、第二色调区间和第三色调区间，具有同一色饱和度值的当前色饱和度信号对应的预设调整系数不同。
本方案中，基于不同色调区间的色饱和度信号的色偏程度不同，在同一色饱和度值情况下，其中部分色调区间的色偏严重，而部分色调区间的色偏轻，对于色偏更明显的色调区间，可以对对应的色饱和度信号进行大幅度的调低，而对于色偏不那么明显的色调区间，可以进行小幅度的调低，得到更好的改善色偏；当然，对于色偏不那么严重的色调区间，若是未达 到预设阈值，对其色饱和度值进行一定程度的调高也是可以的。
其中，基于不同色调区间的色饱和度信号的色偏程度不同，在同一色饱和度值情况下，其中部分色调区间的色偏严重，而部分色调区间的色偏轻；对应RGB体系，具体的，蓝色色调区间的色饱和度信号的色偏最严重，绿色色调区间的色饱和度信号的色偏最轻；本方案，对于满足预设阈值的色偏严重的色饱和度信号，根据色偏程度的不同，预设不同的预设调整系数。
具体的，具有同一色饱和度值的当前色饱和度信号，对应蓝色色调区间的所述预设调整系数对当前色饱和度信号的调整幅度，大于对应红色色调区间的所述预设调整系数对当前色饱和度信号的调整幅度；对应红色色调区间的所述预设调整系数对当前色饱和度信号的调整幅度，大于对应绿色色调区间的所述预设调整系数对当前色饱和度信号的调整幅度。如此，色饱和度值最高的信号的调低幅度最大，色饱和度值最小的信号调低幅度最小，减少了色饱和度值过大带来的色偏，并使得色饱和度信号的色饱和度更均匀，在一定程度上也有利于改善色偏，从而达到良好的改善色偏的效果。
其中，以S’＝S*H为例，对应蓝色色调区间的预设调整系数可以小于对应红色色调区间的预设调整系数，对应红色色调区间的预设调整系数可以小于对应绿色色调区间的预设调整系数，此时预设调整系数越小，调整的幅度越大；对应的，以S’＝1-min*H/max为例，此时对应蓝色色调区间的预设调整系数最大且调整幅度最大，对应绿色色调区间的预设调整系数最小且调整幅度最小。
在一实施例中，该色饱和度信号根据色调区间不同拆分为红色色调区间、绿色色调区间、蓝色色调区间和非调整色调区间；
所述色调值Hue的范围为：0-360，对应0-360度，其中：
色调满足如下公式的色调区间为红色色调区间：0≤Hue＜40，或320＜Hue≤360；
色调值满足如下公式的色调区间为绿色色调区间：80＜Hue＜160；
将色调值满足如下公式的色调区间划分为蓝色色调区间：200＜Hue＜280；
色调值满足如下公式的色调区间为非调整色调区间：40≤Hue≤80，或160≤Hue≤200，或280≤Hue≤320。
本方案，鉴于RGB体系下，定义0度为红色色调，120度为绿色色调，240度为蓝色色调，在同一色饱和度值的前提下，越靠近红绿蓝色色调，则色偏越严重，而越远离红绿蓝色色调的饱和度信号色偏越轻，甚至符合色偏的标准而不需要进行色偏调节；本方案中，将靠近绿色色调的划分为绿色色调区间、将靠近蓝色色调的划分为蓝色色调区间、将靠近红色色调的划分为红色色调区间；而对远离红绿蓝色色调则划分为非调整区间，如此，可以对应同一色饱和度值，色偏最严重的蓝色色调区间，对应设置最大的预设调整系数；色偏轻的绿色色调区间，对应设置小的预设调整系数；而对几乎不存在色偏的非调整区间，则不进行调整或者设置预设调整系数为1，如此，在改善色偏的同时，尽量避免色饱和度值的降低，有利于提高显示面板的显示效果。
在一实施例中，在判断当前色饱和度信号的色饱和度值是否达到预设阈值的步骤中：
色饱和度阈值为0.5，若当前色饱和度信号的色饱和度值大于0.5，则判定达到色饱和度阈值；
若当前色饱和度信号的色饱和度值小于等于0.5，则判定未达到色饱和度阈值，对对应的色饱和度信号不做调整处理或预设调整系数为1。
其中，该色饱和度阈值可以为0.5至1，不包括0.5和1，即当当前色饱和度信号为1时，第二色饱和度信号可以不调整；当然，调整也是可以的，根据具体需求，该色饱和度阈值可以进行对应调整。
本方案中，鉴于色饱和度值越大，色偏程度越大的原理；将色饱和度信号划分为色饱和度值满足预设阈值的一部分，和色饱和度值不满足预设阈值的另一部分；具体的，将预设阈值设置为0.5，这样做，可以挑选出色偏严重的色饱和度信号进行调整，而对色偏轻甚至不 存在色偏的色饱和度信号则不进行调整处理，在改善色偏的同时，尽量避免色饱和度值的降低，达到色偏和色饱和度的平衡，从而达到更好的显示效果。
其中，该预设调整系数，根据预设的计算公式计算得到或通过调整系数查找表查找得到。
本方案中，通过预先的测试或者计算先行得到对应的计算公式或者调整系数查找表，如此，在获取当前色饱和度信号时，可以根据色饱和度信号的不同(色饱和度值、色调区间等)来获取不同的预设调整系数，从而对色饱和度信号进行不同程度的色饱和度值调整操作，从而减少色饱和度值太高而导致的色偏。
其中，该调整系数查找表可以是直接记载有预设调整系数的查找表，也可以是记录预设的计算公式的系数的查找表。
其中，第二色彩空间信号和第一色彩空间信号可以符合如下公式：
S’＝a*S4+b*S3+c*S2+d*S+e；
其中，S为第一色彩空间信号对应的当前色饱和度信号，S’为第二色彩空间信号对应的色饱和度信号；所述a,b,c,d,e为常数，所述a,b,c,d,e根据色饱和度值和色调区间不同，通过预设的公式系数查找表查找得到。
本方案中，该预设调整系数可以根据预设的计算公式计算得到，计算公式虽然不同，但是可以满足于四次多项式，其中的常系数a,b,c,d,e是根据色饱和度值和色调区间不同，通过预设的查找表查找得到；当然，其他的计算公式也是适用的，例如，当色饱和度值S满足一定条件时，预设调整系数等于根号S；当色饱和度值S满足另一条件时，预设调整系数等于三次根号S等公式也是可以的。
图5是本申请实施例的当前色饱和度信号和第二色饱和度信号的变化示意图，图6是本申请实施例的当前色饱和度信号和第二色饱和度信号的色差变化曲线图，图7是本申请实施例的当前色饱和度信号和第二色饱和度信号的色差变化示意图。
其中，该图6的色差变化图，可以是正视角情况下的。当然，也可以是侧视角情况下的。该图7中的虚线是当前色饱和度信号在各种色系下对应的色差变化，实线是第二色饱和度信号在各种色系下对应的色差变化。
具体的，显示器的输入信号RGB三原色信号，如果显示器的驱动采用8bit颜色解析度，则RGB三原色输入信号的阶调即可分解为0,1,2…255灰阶驱动信号。本申请将RGB三原色输入信号转换成HSV色彩空间信号，在HSV的色彩空间下根据不同的色调和色饱和度值调整色饱和度来达到色偏改善的效果。
参考附图1，液晶显示器各种代表性色系的大视角与正视视角色偏变化，可以明显发现，偏R、G、B色相的色系大视角色偏情况均其他色系来得严重，因此解决R、G、B色相的色偏缺陷可以大大提升大视角的整体色偏改善。
其中，RGB体系下的颜色信号或者说RGB三原色信号转换成HSV信号的计算方式如下描述：
RGB三原色的输入信号为0,1,…255的8bit灰阶数位信号，各灰阶信号对应于255输入信号的亮度归一化信号(以255灰阶为最大亮度)分别为r、g、b。
其中r＝(R/255)^γr、g＝(G/255)^γg、b＝(B/255)^γb，其中γr、γg、γb为所谓gamma信号，将数位灰阶信号转换为亮度信号的指数参数。H为色调信号，r,g,b规一化亮度信号透过转换成色调h及饱和度s信号。其中，H为颜色代表，由0度～360度代表不同色相颜色呈现，其中定义0度为红色，120度为绿色，240度为蓝色。
其中，R为红色灰阶数位信号，G为绿色灰阶数位信号，B为蓝色灰阶数位信号；min为r,g,b中的最小值，max为r,g,b中的最大值。
r,g,b规一化亮度信号与色调h及饱和度信号s的转换关系，满足下公式：
Figure PCTCN2019077603-appb-000001
Figure PCTCN2019077603-appb-000002
综上可发现，当色调接近R、G、B纯色色调时，存在视角观赏的色偏劣化明显，同时当色调接近R、G、B纯色色调时色饱和度s越大则色偏现象越明显。可以透过降低R、G、B纯色色调时色饱和度s，即越接近纯色色调，色饱和度调整幅度越大，让大视角观赏的颜色相比于正视观察的颜色改善色偏或消除色偏。
另外，在完成色饱和度调整之后，还可以增加一个检测步骤，例如，将色饱和度信号转换为CIE Lu’v’色彩空间信号(CIE，Commission Internationale de L'Eclairage，国际照明委员会)，其中L是亮度坐标，u’和v’是色度坐标。为了改善色偏，色饱和度调整对当前色饱和度信号进行降低色饱和度值的处理，但是若是为了尽量减少色饱和度损失的话，纯色变化，即从当前色饱和度信号S，到第二色饱和度信号S’的变化，即纯度变化或色差，应当满足：
Δuv＝√((u_1-u_2)^2+(v_1-v_2)^2)≤0.02。其中，u_1和v_1是当前色饱和度信号的色度坐标，该u_2和v_2是第二色饱和度信号的色度坐标，即色饱和度调整之后的色饱和度信号的色度坐标。
图8是本申请一种显示面板的驱动系统的示意图，参考图8，结合图1-图7可知：本申请还公开了一种显示面板的驱动系统100，使用如本申请所述的一种显示面板的驱动方法，所述驱动系统100包括：
接收电路110，接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；预设调整系数计算电路120、调整电路130和驱动电路140；
所述预设调整系数计算电路120获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；所述调整电路130，使用预设调整系数对当前色饱和度信号进行调整处理；完成色饱和度信号的调整处理，得到在HSV体系下的第二色彩空间信号；所述驱动电路140使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
图9是本申请一种显示装置的示意图，参考图9，结合图1-图8可知：本申请还公开了一种显示装置200，包括如本申请所述的一种显示面板的驱动系统100。
需要说明的是，本方案中涉及到的各步骤的限定，在不影响具体方案实施的前提下，并不认定为对步骤先后顺序做出限定，写在前面的步骤可以是在先执行的，也可以是在后执行的，甚至也可以是同时执行的，只要能实施本方案，都应当视为属于本申请的保护范围。
本申请的技术方案可以广泛用于各种显示面板，如TN型显示面板(全称为Twisted Nematic，即扭曲向列型面板)、IPS型显示面板(In-Plane Switching，平面转换)、VA型显示面板(Vertical Alignment，垂直配向技术)、MVA型显示面板(Multi-domain Vertical  Alignment，多象限垂直配向技术)，当然，也可以是其他类型的显示面板，如有机发光显示面板(organic light-emitting diode，简称OLED显示面板)，均可适用上述方案。以上内容是结合具体的可选实施方式对本申请所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本申请的保护范围。

Claims (19)

  1. 一种显示面板的驱动方法，包括步骤：
    接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；
    获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；
    使用预设调整系数对当前色饱和度信号进行调整处理；
    完成色饱和度信号的调整处理，得到在HSV体系下的第二色彩空间信号；以及
    使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
  2. 如权利要求1所述的一种显示面板的驱动方法，其中，所述使用预设调整系数对当前色饱和度信号进行调整处理的步骤是将所有位于调整色调整区间的色饱和度信号都根据预设调整系数进行色饱和度值的调整处理。
  3. 如权利要求1所述的一种显示面板的驱动方法，其中，所述使用预设调整系数对当前色饱和度信号进行调整处理的步骤是将在调整色调区间的色饱和度信号根据预设调整系数进行色饱和度值的调低处理。
  4. 如权利要求1所述的一种显示面板的驱动方法，其中，所述色饱和度信号根据色调不同至少拆分为第一色调区间、第二色调区间、第三色调区间和非调整色调区间；
    所述判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数的步骤包括：
    判断当前色饱和度信号对应的色调是否在第一色调区间、第二色调区间、第三色调区间内，若是，则获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数；
  5. 如权利要求4所述的一种显示面板的驱动方法，其中，若在非调整色调区间内，则判定不在待调整色调区间内，则对对应的色饱和度信号不做调整处理或预设调整系数为1。
  6. 如权利要求4所述的一种显示面板的驱动方法，其中，所述第一色调区间为红色色调区间、第二色调区间为绿色色调区间和第三色调区间为蓝色色调区间；
    位于同一色调的所述色饱和度信号，色饱和度值越大，调整处理的调整幅度越大。
  7. 如权利要求4所述的一种显示面板的驱动方法，其中，所述获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数的步骤中：
    对应所述第一色调区间、第二色调区间和第三色调区间，具有同一色饱和度值的所述色饱和度信号的预设调整系数不同。
  8. 如权利要求1所述的一种显示面板的驱动方法，其中，所述色饱和度信号根据色调区间不同拆分为红色色调区间、绿色色调区间、蓝色色调区间和非调整色调区间；
    所述色调值Hue的范围为：0-360，对应0-360度，其中：
    色调满足如下公式的色调区间为红色色调区间：0≤Hue＜40，或320＜Hue≤360；
    色调值满足如下公式的色调区间为绿色色调区间：80＜Hue＜160；
    将色调值满足如下公式的色调区间划分为蓝色色调区间：200＜Hue＜280；
    色调值满足如下公式的色调区间为非调整色调区间：40≤Hue≤80，或160≤Hue≤200，或280≤Hue≤320。
  9. 如权利要求1所述的一种显示面板的驱动方法，其中，所述预设调整系数，根据预设的计算公式计算得到或通过调整系数查找表查找得到。
  10. 如权利要求9所述的一种显示面板的驱动方法，其中，所述调整系数查找表是直接 记载有预设调整系数的查找表。
  11. 如权利要求9所述的一种显示面板的驱动方法，其中，所述调整系数查找表是记录预设的计算公式的系数的查找表。
  12. 如权利要求9所述的一种显示面板的驱动方法，其中，第二色彩空间信号和第一色彩空间信号可以符合如下公式：
    S’＝a*S4+b*S3+c*S2+d*S+e；
    其中，S为第一色彩空间信号对应的当前色饱和度信号，S’为第二色彩空间信号对应的色饱和度信号；所述a,b,c,d,e为常数，所述a,b,c,d,e根据色饱和度值和色调区间不同，通过预设的公式系数查找表查找得到。
  13. 如权利要求4所述的一种显示面板的驱动方法，其中，所述若是，则获取第一色调区间、第二色调区间、第三色调区间对应的预设调整系数的步骤包括：
    判断当前色饱和度信号对应的色调是否在红色色调区间、绿色色调区间和蓝色色调区间内，若是，则判定在调整色调整区间；以及
    判断在调整色调整区间的色饱和度信号的色饱和度值是否达到预设阈值；若达到，则根据色调区间和色饱和度值获取当前色饱和度信号对应的预设调整系数。
  14. 如权利要求12所述的一种显示面板的驱动方法，其中，所述在判断当前色饱和度信号的色饱和度值是否达到预设阈值的步骤中：
    色饱和度阈值为0.5，若当前色饱和度信号的色饱和度值大于0.5，则判定达到色饱和度阈值。
  15. 如权利要求14所述的一种显示面板的驱动方法，其中，若当前色饱和度信号的色饱和度值小于等于0.5，则判定未达到色饱和度阈值，对对应的色饱和度信号不做调整处理或预设调整系数为1。
  16. 如权利要求14所述的一种显示面板的驱动方法，其中，所述色饱和度阈值为0.5至1，不包括0.5和1。
  17. 如权利要求1所述的一种显示面板的驱动方法，其中，设定S为第一色彩空间信号对应的当前色饱和度信号，S’为第二色彩空间信号对应的色饱和度信号，H为预设调整系数，则：S’＝S*H。
  18. 一种显示面板的驱动系统，包括：
    接收电路，接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；
    预设调整系数计算电路，获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；
    调整电路，使用预设调整系数对当前色饱和度信号进行调整处理；完成色饱和度信号的调整处理，得到在HSV体系下的第二色彩空间信号；以及
    驱动电路，使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
  19. 一种显示装置，包括驱动系统，所述驱动系统包括：
    接收电路，接收在RGB体系下的第一颜色信号，将第一颜色信号转换为在HSV体系下的第一色彩空间信号；
    预设调整系数计算电路，获取第一色彩空间信号的当前色饱和度信号，并判断当前色饱和度信号的色调是否在调整色调整区间内，若在，则获取当前色饱和度信号对应的预设调整系数；
    调整电路，使用预设调整系数对当前色饱和度信号进行调整处理；完成色饱和度信号的 调整处理，得到在HSV体系下的第二色彩空间信号；以及
    驱动电路，使用第二色彩空间信号转换为RGB体系下的第二颜色信号驱动显示面板。
PCT/CN2019/077603 2018-12-11 2019-03-11 显示面板的驱动方法、驱动系统和显示装置 WO2020118926A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/042,880 US11355078B2 (en) 2018-12-11 2019-03-11 Display panel driving method, driving system and display device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201811510627.6 2018-12-11
CN201811510627.6A CN109637471B (zh) 2018-12-11 2018-12-11 一种显示面板的驱动方法、驱动系统和显示装置
CN201811511896.4A CN109461417B (zh) 2018-12-11 2018-12-11 一种显示面板的驱动方法、驱动系统和显示装置
CN201811511896.4 2018-12-11

Publications (1)

Publication Number Publication Date
WO2020118926A1 true WO2020118926A1 (zh) 2020-06-18

Family

ID=71077053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/077603 WO2020118926A1 (zh) 2018-12-11 2019-03-11 显示面板的驱动方法、驱动系统和显示装置

Country Status (2)

Country Link
US (1) US11355078B2 (zh)
WO (1) WO2020118926A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113327532A (zh) * 2021-04-28 2021-08-31 华兴源创(成都)科技有限公司 一种显示面板的色偏补偿方法及装置、计算机设备及介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009302906A (ja) * 2008-06-13 2009-12-24 Seiko Epson Corp 画像処理装置、集積回路装置及び電子機器
CN101866641A (zh) * 2010-03-09 2010-10-20 华映视讯（吴江）有限公司 影像的色彩调整方法
CN102479482A (zh) * 2010-11-26 2012-05-30 乐金显示有限公司 图像显示装置及其驱动方法
CN103634580A (zh) * 2013-12-19 2014-03-12 敦泰科技有限公司 一种彩色图像的色域调整方法及装置
CN103974051A (zh) * 2013-01-29 2014-08-06 晨星半导体股份有限公司 影像处理装置及影像处理方法
KR20160137215A (ko) * 2015-05-22 2016-11-30 엘지디스플레이 주식회사 표시장치 및 이의 영상 처리 방법
CN106981277A (zh) * 2016-01-19 2017-07-25 上海和辉光电有限公司 用于显示器的色调的调整方法、装置及系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101115211A (zh) 2007-08-30 2008-01-30 四川长虹电器股份有限公司 色彩独立增强处理方法
JP4893827B2 (ja) * 2008-02-15 2012-03-07 パナソニック株式会社 カラーマネージメントモジュール、カラーマネージメント装置、集積回路、表示装置、及びカラーマネージメント方法
JP5177751B2 (ja) * 2008-09-29 2013-04-10 ルネサスエレクトロニクス株式会社 表示駆動回路
EP2525326B1 (en) * 2011-05-20 2014-05-14 Sony Corporation An image processing method and an image processing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009302906A (ja) * 2008-06-13 2009-12-24 Seiko Epson Corp 画像処理装置、集積回路装置及び電子機器
CN101866641A (zh) * 2010-03-09 2010-10-20 华映视讯（吴江）有限公司 影像的色彩调整方法
CN102479482A (zh) * 2010-11-26 2012-05-30 乐金显示有限公司 图像显示装置及其驱动方法
CN103974051A (zh) * 2013-01-29 2014-08-06 晨星半导体股份有限公司 影像处理装置及影像处理方法
CN103634580A (zh) * 2013-12-19 2014-03-12 敦泰科技有限公司 一种彩色图像的色域调整方法及装置
KR20160137215A (ko) * 2015-05-22 2016-11-30 엘지디스플레이 주식회사 표시장치 및 이의 영상 처리 방법
CN106981277A (zh) * 2016-01-19 2017-07-25 上海和辉光电有限公司 用于显示器的色调的调整方法、装置及系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113327532A (zh) * 2021-04-28 2021-08-31 华兴源创(成都)科技有限公司 一种显示面板的色偏补偿方法及装置、计算机设备及介质
CN113327532B (zh) * 2021-04-28 2022-10-11 华兴源创(成都)科技有限公司 一种显示面板的色偏补偿方法及装置、计算机设备及介质

Also Published As

Publication number Publication date
US11355078B2 (en) 2022-06-07
US20210027731A1 (en) 2021-01-28

Similar Documents

Publication Publication Date Title
US10446095B2 (en) Image processing method of display device, image processing structure, and display device
WO2020118925A1 (zh) 显示模组的驱动方法、驱动系统和显示装置
CN109559692B (zh) 一种显示模组的驱动方法、驱动系统和显示装置
CN109559693B (zh) 一种显示面板的驱动方法、驱动系统和显示装置
US11295679B2 (en) Method and apparatus for compensating view chromatic aberration of display device and display device
WO2019137004A1 (zh) 显示面板的驱动方法及装置
CN110189717B (zh) 一种显示模组的驱动方法、驱动系统和显示装置
WO2020118924A1 (zh) 显示模组的驱动方法、驱动系统和驱动装置
CN109461417B (zh) 一种显示面板的驱动方法、驱动系统和显示装置
WO2020207169A1 (zh) 显示面板的驱动方法、驱动系统和显示装置
CN109658872B (zh) 一种显示模组的驱动方法和驱动装置
US11335282B2 (en) Driving method for display panel and driving device thereof
WO2020118923A1 (zh) 显示模组的驱动方法、驱动系统和驱动装置
WO2020118926A1 (zh) 显示面板的驱动方法、驱动系统和显示装置
CN110111744B (zh) 一种显示模组的驱动方法、驱动系统和显示装置
CN110010087B (zh) 一种显示面板的驱动方法、驱动系统和显示装置
CN109509436B (zh) 一种显示面板的驱动方法、驱动装置和显示装置
CN109637472B (zh) 一种显示面板的驱动方法、驱动系统和显示装置
CN109658884B (zh) 一种显示面板的驱动方法、驱动系统和显示装置
CN109637471B (zh) 一种显示面板的驱动方法、驱动系统和显示装置
WO2020207168A1 (zh) 显示模组的驱动方法、驱动系统和显示装置
CN109671399B (zh) 一种显示模组的驱动方法、驱动系统和显示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19895860

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 03.11.2021)

122 Ep: pct application non-entry in european phase

Ref document number: 19895860

Country of ref document: EP

Kind code of ref document: A1