WO2019091243A1 - 显示面板的驱动方法及装置、显示装置 - Google Patents

显示面板的驱动方法及装置、显示装置 Download PDF

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Publication number
WO2019091243A1
WO2019091243A1 PCT/CN2018/107967 CN2018107967W WO2019091243A1 WO 2019091243 A1 WO2019091243 A1 WO 2019091243A1 CN 2018107967 W CN2018107967 W CN 2018107967W WO 2019091243 A1 WO2019091243 A1 WO 2019091243A1
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Prior art keywords
pixel
sub
primary color
pixels
color sub
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English (en)
French (fr)
Inventor
宋丹娜
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to US16/466,139 priority Critical patent/US10971052B2/en
Priority to EP18875678.7A priority patent/EP3709284A4/en
Publication of WO2019091243A1 publication Critical patent/WO2019091243A1/zh
Anticipated expiration legal-status Critical
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    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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    • 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
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    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G09G2330/023—Power management, e.g. power saving using energy recovery or conservation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
    • G—PHYSICS
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    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits

Definitions

  • the present disclosure relates to a driving method and device for a display panel, and a display device.
  • organic light emitting diode (OLED) display panels generally adopt four-color sub-pixels.
  • each pixel of the display panel includes a red (R) sub-pixel for generating red light, a green (G) sub-pixel for generating green light, a blue (B) sub-pixel for generating blue light, and A white (W) sub-pixel that produces white light.
  • R, G, B sub-pixels are generally referred to as primary color sub-pixels
  • W sub-pixels are generally referred to as mixed color sub-pixels.
  • the driving device can convert the received RGB data signal into the RGBW data signal when driving the OLED display panel of the RGBW four-color sub-pixel. After output to the source driver circuit.
  • the present disclosure provides a driving method and device for a display panel, and a display device.
  • the technical solution is as follows:
  • a driving device for a display panel each pixel of the display panel includes at least two primary color sub-pixels of different colors and one color mixing sub-pixel, and the driving device includes:
  • a first determining module configured to determine display power consumption according to the obtained brightness value of each primary color sub-pixel
  • a compensation module configured to compensate a brightness value of each primary color sub-pixel according to the display power consumption
  • a second determining module configured to determine an output luminance value of each sub-pixel according to the compensated luminance value of each primary color sub-pixel and the color coordinates of each sub-pixel;
  • an output module configured to output an output luminance value of each sub-pixel to the source driving circuit.
  • the compensation module is configured to:
  • the power consumption of each of the primary color sub-pixels is compensated for by the power consumption gain.
  • the compensation module is further configured to:
  • the static gain is used to statically compensate the luminance value of each primary color sub-pixel after power consumption compensation.
  • the process of detecting, by the compensation module, whether the display image is a still image includes:
  • the display image is a still image when a sum of brightnesses of the display images is equal to a sum of brightnesses of images of a previous frame
  • the second determining module is configured to:
  • the determination of the minimum reference luminance value is the output luminance value of the mixed color sub-pixel
  • an output luminance value of the color mixing sub-pixel Determining, according to an output luminance value of the color mixing sub-pixel, an output luminance value of each of the primary color sub-pixels, wherein an output luminance value of each of the primary color sub-pixels is a compensated luminance value of the primary color sub-pixel and the A difference between luminance components of the primary color sub-pixels, wherein the luminance component of the primary color sub-pixel is a product of an output luminance value of the color-mixing sub-pixel and a color mixing ratio corresponding to the primary color sub-pixel.
  • the second determining module is further configured to:
  • the device also includes:
  • a receiving module configured to receive a display grayscale of each primary color sub-pixel
  • the third determining module is configured to determine, according to the correspondence between the gray scale and the brightness value of each sub-pixel, a brightness value corresponding to the display gray level of each of the primary color sub-pixels.
  • the output module is configured to:
  • the output brightness value of each sub-pixel is compensated by the aging compensation coefficient, and then output to the source driving circuit.
  • the output module is configured to:
  • the output luminance value of each sub-pixel is compensated by the driving compensation coefficient, and then output to the source driving circuit.
  • each pixel of the display panel includes at least two primary color sub-pixels and one color mixing sub-pixel of different colors, and the method includes:
  • the output luminance values of the respective sub-pixels are output to the source driving circuit.
  • the performing, according to the display power consumption, compensating for a luminance value of each primary color sub-pixel including:
  • the power consumption of each of the primary color sub-pixels is compensated for by the power consumption gain.
  • the method further includes:
  • the static gain is used to statically compensate the luminance value of each primary color sub-pixel after power consumption compensation.
  • the detecting whether the image is a still image includes:
  • the display image is a still image when a sum of brightnesses of the display images is equal to a sum of brightnesses of images of a previous frame
  • the determining, according to the compensated luminance values of each of the primary color sub-pixels and the color coordinates of each sub-pixel, determining an output luminance value of each sub-pixel including:
  • the determination of the minimum reference luminance value is the output luminance value of the mixed color sub-pixel
  • an output luminance value of the color mixing sub-pixel Determining, according to an output luminance value of the color mixing sub-pixel, an output luminance value of each of the primary color sub-pixels, wherein an output luminance value of each of the primary color sub-pixels is a compensated luminance value of the primary color sub-pixel and the A difference between luminance components of the primary color sub-pixels, wherein the luminance component of the primary color sub-pixel is a product of an output luminance value of the color-mixing sub-pixel and a color mixing ratio corresponding to the primary color sub-pixel.
  • the method further includes:
  • the method further includes:
  • the brightness value corresponding to the display gray level of each primary color sub-pixel is determined according to the correspondence between the gray scale and the luminance value of each sub-pixel.
  • the outputting the output luminance values of the respective sub-pixels to the source driving circuit includes:
  • the output brightness value of each sub-pixel is compensated by the aging compensation coefficient, and then output to the source driving circuit.
  • the outputting the output luminance values of the respective sub-pixels to the source driving circuit includes:
  • the output luminance value of each sub-pixel is compensated by the driving compensation coefficient, and then output to the source driving circuit.
  • the display power consumption S satisfies:
  • n is the total number of primary color sub-pixels included in each pixel
  • Li is the luminance value of the i-th primary color sub-pixel
  • i is a positive integer not greater than n
  • min is the minimum value
  • a driving apparatus for a display device including: a processing component, a memory, and a computer program stored on the memory and operable on the processing component, the processing component executing the computer program
  • a driving method of a display panel as described in the above aspect is achieved.
  • a display device comprising: a display panel, and a driving device of the display panel as described in the above aspect.
  • a computer readable storage medium storing instructions for causing a computer to perform display as described in the above aspect when the computer readable storage medium is run on a computer The driving method of the panel.
  • FIG. 1 is a flowchart of a driving method of a display panel according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of another driving method of a display panel according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a method for compensating a luminance value of each primary color sub-pixel according to display power consumption according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of determining an output luminance value of a mixed color sub-pixel according to a color mixing ratio of each primary color sub-pixel according to an embodiment of the present disclosure
  • FIG. 5 is a flowchart of a method for outputting an output luminance value of each sub-pixel to a source driving circuit according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart of a method for determining a correspondence between gray scales and luminance values according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a driving device of a display panel according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another driving device for a display panel according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another driving device for a display panel according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another driving device for a display panel according to an embodiment of the present disclosure.
  • each pixel may include at least two primary color sub-pixels and one color mixing sub-pixel of different colors. For example, three different color primary color sub-pixels of R, G, and B, and one white mixed color sub-pixel may be included.
  • Each of the primary color sub-pixels may include an organic light-emitting diode capable of emitting white light and a color film of a corresponding color, and in the mixed color sub-pixel, there is no need to provide a color film. Since the transmittance of the color film is low, in order to ensure display brightness, it is generally necessary to increase the current passing through the organic light emitting diode in the primary color sub-pixel, which increases the power consumption of the display panel.
  • the light emitted by each of the primary color sub-pixels is mixed in a certain ratio to generate light emitted by the mixed color sub-pixel, the light emitted by the partial primary color sub-pixels can be replaced by driving the mixed color sub-pixels. Since the transmittance of the mixed color sub-pixel is much higher than the transmittance of the primary color sub-pixel, the display power consumption can be greatly reduced under the same brightness requirement.
  • FIG. 1 is a flowchart of a driving method of a display panel according to an embodiment of the present disclosure. The method can be applied to a driving device of a display device, each pixel of the display panel can include at least two primary color sub-pixels of different colors and one color mixing sub-pixel.
  • the method can include the following work process:
  • step 101 display power consumption is determined according to the acquired luminance values of each of the primary color sub-pixels.
  • the display power consumption is positively correlated with the luminance values of the respective primary color sub-pixels, that is, the higher the luminance value of the primary color sub-pixel, the higher the display power consumption.
  • step 102 the luminance values of each of the primary color sub-pixels are compensated based on the display power consumption.
  • the driving device can calculate the power consumption gain according to the display power consumption, and compensate the luminance value of each of the primary color sub-pixels according to the power consumption gain.
  • the power consumption gain can be inversely related to the display power consumption, that is, the display power consumption is larger, and the power consumption gain is smaller. Thereby, it can be ensured that when the display power consumption of the display device is small, the compensation of the brightness value is increased to improve the display effect. When the display power consumption of the display device is large, the compensation of the luminance value is reduced to avoid excessive display power consumption.
  • step 103 the output luminance value of each sub-pixel is determined according to the compensated luminance values of each of the primary color sub-pixels and the color coordinates of the respective sub-pixels.
  • the driving device may determine the output luminance value of the mixed color sub-pixel and the output of each primary color sub-pixel according to the compensated luminance value of each primary color sub-pixel and the color coordinates of each of the primary color sub-pixel and the mixed color sub-pixel.
  • Brightness value That is, conversion of RGB luminance values to RGBW luminance values can be achieved.
  • the color coordinates that is, the coordinates of the color, are usually expressed by (x, y, z)
  • x is the ratio of red light in white light
  • y is the ratio of green light in white light
  • z is generally not represented, and can be passed by formula 1.
  • -xy is calculated, so the color coordinates can also be represented by (x, y).
  • step 104 the output luminance values of the respective sub-pixels are output to the source driving circuit.
  • the driving device may output the compensated and converted output luminance values of the respective sub-pixels to the source driving circuit to drive the display panel for display.
  • the driving device may directly output the output luminance values of the respective sub-pixels to the source driving circuit; or the driving device may convert the output luminance values of the respective sub-pixels to display gray scales and output the signals to the source driving circuit.
  • the driving method provided by the embodiment of the present disclosure can compensate the brightness value of each primary color sub-pixel according to the display power consumption after obtaining the brightness value of the primary color sub-pixel, so that when the display power consumption is different, The degree of compensation of the brightness value is also different, so that the power consumption of the display device can be reasonably utilized, and the driving flexibility and display effect of the display panel can be improved.
  • FIG. 2 is a flowchart of another driving method of a display panel according to an embodiment of the present disclosure. The method can be applied to a driving device of a display device, each pixel of the display panel can include at least two primary color sub-pixels of different colors and one color mixing sub-pixel.
  • the method can include the following work process:
  • step 201 the display grayscale of each of the primary color sub-pixels is received.
  • the driving device may receive a display gray scale of each of the primary color sub-pixels in each pixel transmitted by the signal source.
  • step 202 the brightness value corresponding to the display gray level of each primary color sub-pixel is determined according to the correspondence between the gray scale and the luminance value of each sub-pixel.
  • the driving device can convert the display gray scale into a brightness value according to a preset correspondence between the gray scale and the brightness value.
  • the correspondence between the gray scale and the brightness value may be a gamma curve, and the gamma curve may be used to indicate the display brightness of the sub-pixels of different colors under different gray levels.
  • the commonly used gamma curve is generally a gamma 2.2 curve, that is, the luminance value of the primary color sub-pixel is 2.2 power of the gray scale.
  • step 203 the display power consumption is determined based on the luminance values of each of the primary color sub-pixels.
  • the display power consumption is positively correlated with the luminance values of the respective primary color sub-pixels, that is, the higher the luminance value of the primary color sub-pixel, the higher the display power consumption.
  • the display power consumption S can satisfy:
  • n is the total number of primary color sub-pixels included in each pixel
  • Li is the luminance value of the i-th primary color sub-pixel
  • i is a positive integer not greater than n.
  • Min(L1, . . . , Ln) represents the minimum value among the luminance values of the respective primary color sub-pixels, and the minimum value can be used as the luminance value when the mixed color sub-pixel emits light.
  • the display power consumption S is the sum of the luminance values of the respective primary color sub-pixels and the difference of (n-1) times the minimum value among the luminance values of the respective primary color sub-pixels.
  • the mixed color sub-pixels can be used instead of the respective primary color sub-pixels to emit light, the power consumption generated when the mixed color sub-pixels emit light can cancel the power consumption when each of the primary color sub-pixels emits light. Therefore, in calculating the display power consumption, it is necessary to subtract the minimum luminance of each of the primary color sub-pixels by n times the sum of the luminances of the respective sub-pixels.
  • step 204 the luminance values of each of the primary color sub-pixels are compensated based on the display power consumption.
  • FIG. 3 is a flowchart of a method for compensating a luminance value of each primary color sub-pixel according to display power consumption according to an embodiment of the present disclosure.
  • the compensation method may include the following work process:
  • a power consumption gain is determined based on the display power consumption, the power consumption gain being negatively correlated with the display power consumption.
  • the power consumption gain P may be negatively correlated with the display power consumption, that is, the display power consumption is larger, the power consumption gain P is smaller, and the power consumption gain P may be greater than 0 and less than or equal to 1. number.
  • the power consumption gain P may be 1 when the display power consumption is less than or equal to a preset minimum power consumption threshold. Therefore, when the display power consumption is small, the power consumption gain P is large, and the compensation of the brightness value is increased to improve the display effect. When the display power consumption is large, the power consumption gain P is small, and the compensation of the luminance value is reduced to avoid excessive display power consumption.
  • the driving device After the driving device calculates the display power consumption, the driving device can determine the corresponding power consumption gain P according to the power consumption range in which the display power consumption is located.
  • step 2042 the power consumption gain is used to compensate the luminance values of each of the primary color sub-pixels.
  • the driving device can perform power consumption compensation on the luminance value of each of the primary color sub-pixels according to the determined power consumption gain. For example, by multiplying the luminance value of each primary color sub-pixel by the power consumption gain, the power consumption compensated luminance value can be obtained. Since the power consumption gain is negatively correlated with the display power consumption, the smaller the display power consumption, the smaller the luminance value after each primary color sub-pixel compensation, which can effectively reduce the power consumption of the display panel. Correspondingly, the lower the display power consumption, the higher the luminance value after each primary color sub-pixel compensation, and the display effect can be effectively improved in a low power consumption scenario.
  • the luminance values of the primary color sub-pixels of the R, G, and B colors after power consumption compensation may be 0.8 ⁇ LR, 0.8 ⁇ LG, and 0.8 ⁇ LB, respectively.
  • step 2043 it is detected whether or not the display image is a still image based on the luminance value of each of the primary color sub-pixels after the power consumption compensation.
  • step 2044 is performed.
  • the operation may be ended, that is, the static compensation is no longer performed, and the subsequent step, step 205, is directly performed.
  • the still image may refer to an image in which the image content is the same as the image content of the image displayed in the previous frame.
  • the driving device may add the brightness values of the respective primary color sub-pixels in all the pixels in the display image to be displayed, and when the sum of the brightness and the brightness of the previous frame image are equal, it may be determined that the display image to be displayed is still. image.
  • the driving device may also add display gray levels of the respective primary color sub-pixels. When the sum of the gray levels is equal to the sum of the gray levels of the image of the previous frame, the display image to be displayed may be determined to be a still image. There are a plurality of methods for detecting whether an image is a still image, and the embodiment of the present disclosure does not limit this.
  • a static gain is determined based on the power consumption gain and the duration of the still image.
  • a timer can be used to record the stationary duration of the still image, and the static gain is determined according to the predetermined power consumption gain and the recorded stationary time.
  • the stationary duration may refer to the length of time between when the display image is detected as a still image and when the next frame non-stationary image is detected.
  • the static gain can be negatively correlated with the power consumption gain and negatively correlated with the static duration.
  • the static gain is also a number greater than 0 and less than or equal to 1. Since the display image is a still image, the still image may have an afterimage, which affects the display effect, and the longer the stationary time, the more severe the residual image, and the greater the influence on the display effect. Therefore, in the embodiment of the present disclosure, the luminance values of the respective primary color sub-pixels may be further compensated according to the power consumption gain of the display panel and the stationary duration of the still image.
  • the initial value of the static gain K may be 1, and may gradually decrease as the stationary time length t increases.
  • the larger the power consumption gain P the faster the static gain K changes with the stationary time length t.
  • step 2045 the static gain is used to statically compensate the luminance value of each primary color sub-pixel after power consumption compensation.
  • the static gain can be used to statically compensate the luminance value of each primary color sub-pixel after power consumption compensation, so as to prevent the afterimage formed by the still image from affecting the display effect, and ensuring the stability of the image display. Sex.
  • the static gain can be multiplied by the luminance value of each of the primary color sub-pixels after the power consumption compensation.
  • the primary color sub-pixels of the R, G, and B colors after the power consumption compensation are statically compensated.
  • the step of static compensation shown in the foregoing steps 2043 to 2045 may also be deleted according to the situation. That is, the driving device may also perform power consumption compensation only for the luminance values of each of the primary color sub-pixels.
  • step 205 the color mixture ratio corresponding to each of the primary color sub-pixels is determined according to the color coordinates of each of the primary color sub-pixels and the color coordinates of the mixed color sub-pixel.
  • the color mixing ratio corresponding to each of the primary color sub-pixels refers to the proportion of the light emitted by the primary color sub-pixel among the light emitted by the mixed color sub-pixel.
  • the display panel may be driven to display a monochrome image in advance, and the color coordinate of each primary color sub-pixel and the color coordinate of the mixed color sub-pixel are actually measured by the color coordinate measuring device, so that each primary color sub-pixel can be calculated. a corresponding color mixing ratio in the color mixing sub-pixel.
  • the color mixing ratio of each of the primary color sub-pixels is a number greater than or equal to 0 and less than or equal to 1.
  • the color coordinates (x1, y1) of the red sub-pixel R and the color coordinates (x0, y0) of the mixed color sub-pixel can be actually measured, and the two obtained according to the measurement
  • the color coordinates can be used to estimate the proportion of red light emitted by the red sub-pixels in the light emitted by the mixed color sub-pixel.
  • each pixel includes primary color sub-pixels of three colors of R, G, and B.
  • step 206 the ratio of the compensated luminance values of each of the primary color sub-pixels to their corresponding color mixing ratios is calculated, and the reference luminance values corresponding to the respective primary color sub-pixels are obtained.
  • the reference luminance value corresponding to each primary color sub-pixel is the ratio of the luminance value of the primary color sub-pixel compensation to the color mixing ratio corresponding to the primary color sub-pixel.
  • the driving device can calculate the reference brightness value corresponding to the primary color sub-pixel R: LR2/Rs, the reference brightness value corresponding to the primary color sub-pixel G is: LG2/Gs, and the reference brightness value corresponding to the primary color sub-pixel B is: LB2/Bs.
  • step 207 among the reference luminance values corresponding to the respective primary color sub-pixels, the determination of the minimum reference luminance value is the output luminance value of the mixed color sub-pixel.
  • the driving device may compare the size of the reference brightness value corresponding to each of the primary color sub-pixels, and determine the reference brightness value with the smallest reference brightness value as the output brightness value of the mixed color sub-pixel, so that the mixed color sub-pixel can replace the minimum reference brightness.
  • the primary color sub-pixel corresponding to the value emits light.
  • the driving device may determine the reference luminance value LG2/Gs.
  • step 208 an output luminance value of each of the primary color sub-pixels is determined according to an output luminance value of the color mixing sub-pixel.
  • the output luminance value of each of the primary color sub-pixels is a difference between the compensated luminance value of the primary color sub-pixel and the luminance component of the primary color sub-pixel.
  • the luminance component of each of the primary color sub-pixels is the product of the output luminance value of the color-mixing sub-pixel and the color mixing ratio corresponding to the primary color sub-pixel. It can be seen that the luminance component of the primary color sub-pixel corresponding to the minimum reference luminance value is the luminance value after the primary color sub-pixel compensation, and therefore the minimum reference luminance value corresponds to the primary color sub-pixel output luminance value of 0.
  • the mixed color sub-pixels can emit light instead of the primary color sub-pixels corresponding to the minimum reference brightness value.
  • the driving method provided by the embodiment of the present disclosure, when the display device is driven to display an image, at least one primary color sub-pixel in each pixel of the display panel need not emit light. Since the light-emitting efficiency of the mixed color sub-pixel is higher than that of the primary color sub-pixel, the mixed color sub-pixel emits light instead of the primary color sub-pixel under the same light-emitting luminance, and the power consumption of the display device can be effectively reduced.
  • step 209 the output luminance values of the respective sub-pixels are output to the source driving circuit.
  • FIG. 5 is a flowchart of a method for outputting output luminance values of respective sub-pixels to a source driving circuit according to an embodiment of the present disclosure.
  • the method may include the following work process:
  • an aging compensation coefficient of the display panel is determined according to a current driving efficiency of the display panel, and the aging compensation coefficient is negatively correlated with the driving efficiency.
  • the corresponding relationship between the driving efficiency of the display panel and the aging compensation coefficient may be stored in the driving device.
  • the aging compensation coefficient is negatively correlated with the driving efficiency, that is, the higher the driving efficiency of the display panel, the smaller the aging compensation coefficient.
  • the aging compensation coefficient is also a number greater than or equal to 0 and less than or equal to 1.
  • the correspondence between the driving efficiency stored in the driving device and the aging compensation coefficient is as shown in Table 1. It can be seen from Table 1 that when the driving efficiency of the display panel is greater than or equal to 70% and less than 80%, the corresponding aging compensation coefficient is 0.9. When the driving efficiency of the display panel is greater than or equal to 90%, the corresponding aging compensation coefficient is 0.8. If the driving device detects that the current driving efficiency of the display panel is 80%, it can be determined according to the correspondence relationship shown in Table 1 that the aging compensation coefficient corresponding to the driving efficiency is 0.85.
  • step 2092 the output brightness value of each sub-pixel is compensated by using the aging compensation coefficient.
  • the output luminance value of each sub-pixel may be compensated according to the aging compensation coefficient.
  • the luminance value obtained by the driving device for compensating the output luminance value LR3 of the red sub-pixel R is 0.85 ⁇ LR3
  • the luminance after the output luminance value LG3 of the green sub-pixel G is compensated.
  • the value is 0.85 ⁇ LG3
  • the luminance value after compensating for the output luminance value LB3 of the blue sub-pixel B is 0.85 ⁇ LB3.
  • step 2093 a drive compensation coefficient of the drive transistor in the display panel is determined.
  • the driving device may further store a correspondence between a driving parameter of the driving transistor and a driving compensation coefficient.
  • the driving parameter may include a mobility of a threshold voltage of the driving transistor, the driving compensation coefficient being positively correlated with a mobility of the threshold voltage, that is, a larger mobility of the threshold voltage, a larger driving compensation coefficient.
  • step 2094 the output luminance value of each sub-pixel is compensated by the driving compensation coefficient, and then output to the source driving circuit.
  • the output luminance value of each sub-pixel may be compensated according to the driving compensation coefficient, and the compensated output luminance value is output to the source driving circuit for source driving.
  • the circuit can drive each pixel of the display panel to emit light according to the output brightness value.
  • the driving device can compensate the output brightness value according to the driving compensation coefficient, and can also detect the threshold voltage of the driving transistor in real time, and perform the output brightness value according to the detected threshold voltage. Compensation to avoid changes in the threshold voltage affecting the display uniformity of the display panel.
  • the driving device may be a separately integrated control chip in the display device, or may be integrated on a system on chip (SOC) or a graphics card of the display device, and the driving device may be compensated
  • the output luminance value is output to a timing controller (TCON) of the display device, and then the compensated output luminance value is outputted to the source driving circuit by the TCON.
  • the driving device is TCON or integrated in the TCON microcontroller unit (MCU), and the driving device can directly output the compensated output luminance value to the source driving circuit.
  • the driving device can directly output the output luminance values of the respective sub-pixels to the source driving circuit.
  • the driving device may also convert the output luminance values of the respective sub-pixels into display gray scales and output the signals to the source driving circuit.
  • FIG. 6 is a flowchart of a method for determining a correspondence between gray scales and luminance values according to an embodiment of the present disclosure.
  • the method can include the following work process:
  • step 210 the luminance value of each of the primary color sub-pixels at the highest gray level is determined according to the color coordinates of the target mixed color light and the luminance value of the target mixed color light at the highest gray level, and the color coordinates of the mixed color sub-pixel.
  • the color coordinates (X, Y, Z) of the target mixed color light and the brightness value L of the target mixed color light at the highest gray level may be stored in advance in the driving device.
  • the driving device may be based on the color coordinates of the mixed color sub-pixels actually measured, and the color coordinates of each of the primary color sub-pixels, according to the color superposition theorem and the brightness superposition theorem (ie, the brightness of the mixed color light formed by the mixing of the light emitted by each of the primary color sub-pixels is equal to The sum of the luminances of the respective primary color sub-pixels determines the luminance value of each of the primary color sub-pixels at the highest gray level.
  • the color coordinates of the red sub-pixel R are (Rx, Ry, Rz)
  • the color coordinates of the green sub-pixel G are (Gx, Gy, Gz)
  • the color coordinates of the blue sub-pixel B are (Bx, By, Bz).
  • the color coordinates (Wx, Wy, Wz) of the mixed color light formed by the mixing of the light emitted by the respective sub-pixels can satisfy:
  • Wx (Rx+Gx+Bx)/(Rx+Gx+Bx+Ry+Gy+By+Rz+Gz+Bz);
  • Wz (Rz + Gz + Bz) / (Rx + Gx + Bx + Ry + Gy + By + Rz + Gz + Bz).
  • the driving device can derive the color coordinates of each of the primary color sub-pixels and the color of each of the primary color sub-pixels under the highest gray level according to the corresponding relationship of the color coordinates and the brightness superposition theorem, and the light color of each primary color sub-pixel is mixed into the target mixed color light.
  • the brightness value is the color coordinates of each of the primary color sub-pixels and the color of each of the primary color sub-pixels under the highest gray level according to the corresponding relationship of the color coordinates and the brightness superposition theorem
  • step 211 the luminance value of the color mixing sub-pixel at the highest gray level is determined according to the luminance value of each primary color sub-pixel at the highest gray level and the color mixing ratio corresponding to each primary color sub-pixel.
  • the driving device may separately calculate a ratio of a luminance value of each of the primary color sub-pixels at the highest gray level to a corresponding color mixing ratio thereof. Then, among the ratios corresponding to the respective primary color sub-pixels, the smallest value is determined as the luminance value of the mixed color sub-pixel at the highest gray level.
  • the luminance values of the three primary color sub-pixels of R, G, and B calculated by the driving device at the highest gray level are Rmax, Gmax, and Bmax, respectively.
  • the driving device can calculate that the ratio of the luminance value of the red sub-pixel R at the highest gray level to the color mixture ratio of the red sub-pixel is Rmax/Rs, the luminance value of the green sub-pixel G at the highest gray level, and the green sub-pixel
  • the ratio of the color mixture ratio is Gmax/Gs
  • the ratio of the luminance value of the blue sub-pixel B at the highest gray level to the color mixture ratio of the blue sub-pixel is Bmax/Bs.
  • the driving device may determine the luminance value of the white mixed color sub-pixel W at the highest gray level, which is the smallest of the three ratios Rmax/Rs, Gmax/Gs, and Bmax/Bs.
  • the driving device can determine that the luminance value of the white mixed color sub-pixel W at the highest gray level is Gmax. /Gs.
  • step 212 the correspondence between the gray scale and the luminance value of each sub-pixel is determined according to the luminance value of each sub-pixel at the highest gray level and the preset gamma value.
  • the corresponding relationship between the gray scale and the luminance value of the i-th sub-pixel in the mixed color sub-pixel and each of the basic color sub-pixels in each pixel may be expressed as:
  • Li is the luminance value of the i-th sub-pixel
  • Li_max is the luminance value of the ith sub-pixel at the highest gray scale
  • Gri is the grayscale of the i-th sub-pixel
  • Gri_max is the highest grayscale of the i-th sub-pixel
  • ⁇ is a preset gamma value
  • ⁇ is generally 2.2.
  • the display device may convert the gray scale of each primary color sub-pixel to corresponding according to the correspondence relationship shown in the formula (2).
  • the brightness value thereby enabling white balance adjustment of the display panel.
  • the driving device may determine that the brightness value LR of the red sub-pixel is: according to the above formula (2):
  • GrR_max is the highest gray level of the red sub-pixel.
  • the sequence of the steps of the driving method of the display panel provided by the embodiment of the present disclosure may be appropriately adjusted, and the steps may also be correspondingly increased or decreased according to the situation.
  • the step 2043 to the step 2045 may be deleted according to the situation, or the step 2091 to the step 2094 may be deleted according to the situation, that is, the driving device may directly output the output brightness value determined in step 208 to the source driving circuit.
  • Any method that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present disclosure is intended to be included in the scope of the present disclosure, and therefore will not be described again.
  • the driving method of the display panel provided by the embodiment of the present disclosure can compensate the brightness value of each primary color sub-pixel according to the display power consumption after obtaining the brightness value of the primary color sub-pixel, so that the display power consumption is not At the same time, the degree of compensation for the brightness value is also different, so that the power consumption of the display device can be reasonably utilized, and the driving flexibility and display effect of the display panel are improved.
  • FIG. 7 is a schematic structural diagram of a driving device of a display panel according to an embodiment of the present disclosure.
  • Each pixel of the display panel includes at least two primary color sub-pixels of different colors and one color mixing sub-pixel.
  • the driving device may include:
  • the first determining module 301 is configured to determine display power consumption according to the obtained brightness value of each of the primary color sub-pixels.
  • the compensation module 302 is configured to compensate the luminance value of each primary color sub-pixel according to the display power consumption.
  • the second determining module 303 is configured to determine an output luminance value of each sub-pixel according to the compensated luminance value of each primary color sub-pixel and the color coordinates of each sub-pixel.
  • the output module 304 is configured to output an output luminance value of each sub-pixel to the source driving circuit.
  • the compensation module 302 can be used to:
  • a power consumption gain is determined, and the power consumption gain is negatively correlated with the display power consumption; the power consumption gain is used to compensate the luminance value of each of the primary color sub-pixels.
  • the compensation module 302 is further configured to:
  • the static gain is negatively correlated with the power consumption gain and negatively correlated with the static duration; the static gain is used to statically compensate the luminance value of each primary color sub-pixel after power consumption compensation.
  • the process of detecting, by the compensation module 302, whether the display image is a still image may include:
  • the second determining module 303 can be configured to:
  • the minimum of the reference brightness value is determined as the output brightness value of the mixed color sub-pixel
  • an output luminance value of each of the primary color sub-pixels is a compensated luminance value of the primary color sub-pixel and a luminance component of the primary color sub-pixel
  • the luminance component of each primary color sub-pixel is the product of the output luminance value of the mixed color sub-pixel and the color mixing ratio corresponding to the primary color sub-pixel.
  • the second determining module 303 is further configured to:
  • FIG. 8 is a schematic structural diagram of another driving device for a display panel according to an embodiment of the present disclosure. As shown in FIG. 8 , the driving device may further include:
  • the receiving module 305 is configured to receive a display grayscale of each of the primary color sub-pixels.
  • the third determining module 306 is configured to determine a brightness value corresponding to a display gray level of each primary color sub-pixel according to a correspondence between a gray level and a brightness value of each sub-pixel.
  • FIG. 9 is a schematic structural diagram of a driving device for a display panel according to an embodiment of the present disclosure. As shown in FIG. 9, the driving device may further include:
  • the fourth determining module 307 is configured to determine an aging compensation coefficient of the display panel according to a current driving efficiency of the display panel, where the aging compensation coefficient is negatively correlated with the driving efficiency.
  • the output module 304 can be configured to compensate the output luminance value of each sub-pixel by using the aging compensation coefficient, and then output the signal to the source driving circuit.
  • the driving apparatus may further include:
  • the fifth determining module 308 determines a driving compensation coefficient of the driving transistor in the display panel.
  • the output module 304 can be configured to compensate the output luminance value of each sub-pixel by using the driving compensation coefficient, and then output the signal to the source driving circuit.
  • the fourth determining module 307 and the fifth determining module 308 may be modules independent of the output module 304; or may be part of the output module 304, ie, the fourth determining module 307 and the fifth The determination module 308 can be a sub-module of the output module 304.
  • the display power consumption S can satisfy:
  • n is the total number of primary color sub-pixels included in each pixel
  • Li is the luminance value of the i-th primary color sub-pixel
  • i is a positive integer not greater than n
  • min is the minimum value
  • the driving device of the display panel provided by the embodiment of the present disclosure can compensate the brightness value of each primary color sub-pixel according to the display power consumption after acquiring the brightness value of the primary color sub-pixel, so that When the display power consumption is different, the degree of compensation for the brightness value is also different, so that the power consumption of the display device can be reasonably utilized, and the driving flexibility and display effect of the display panel can be improved.
  • FIG. 10 is a schematic structural diagram of a driving device of still another display device according to an embodiment of the present invention.
  • the device may include: a processing component 401, a memory 402, and a memory 402 and may be in a processing component.
  • the computer program 4021 running on the 401, the processing component 401 can be a processing circuit or a processing unit.
  • the processing component 401 executes the computer program 4021, the driving method of the display panel provided by the foregoing method embodiment can be implemented.
  • the driving device may be a separately integrated control chip in the display device, or may be integrated on the SOC or the graphics card of the display device; or the driving device may be TCON or integrated in the MCU of the TCON.
  • An embodiment of the present disclosure provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to execute the driving method of the display panel provided by the above embodiments.
  • Embodiments of the present disclosure provide a display device that can include a display panel and a driving device as shown in any of FIGS. 7-9.
  • the display device may be: a liquid crystal panel, an electronic paper, an OLED panel, an AMOLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like, or any product or component having a display function.

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Abstract

一种显示面板的驱动方法及装置、显示装置。显示面板的每个像素包括至少两个不同颜色的基色子像素和一个混色子像素，驱动方法包括：根据获取到的每个基色子像素的亮度值，确定显示功耗（101）；根据所述显示功耗，对每个基色子像素的亮度值进行补偿（102）；根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值（103）；将各个子像素的输出亮度值输出至源极驱动电路（104）。根据显示增益对各个基色子像素的亮度值进行补偿，可以使得显示功耗不同时，对亮度值的补偿程度也不同，从而能够合理利用显示装置的功耗，提高显示面板的驱动灵活性以及显示效果。

Description

显示面板的驱动方法及装置、显示装置
本公开要求于2017年11月10日提交的申请号为201711103049.X、发明名称为“显示面板的驱动方法及装置、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公开中。
技术领域
本公开涉及一种显示面板的驱动方法及装置、显示装置。
背景技术
为了改善显示效果，有机发光二极管(Organic Light Emitting Diode，OLED)显示面板普遍开始采用四色子像素。例如显示面板的每个像素包括用于产生红光的红色(R)子像素，用于产生绿光的绿色(G)子像素，用于产生蓝光的蓝色(B)子像素，以及用于产生白光的白色(W)子像素。其中，R、G、B子像素一般称为基色子像素，W子像素一般称为混色子像素。
由于显示面板的驱动装置中的图像信号传输接口一般只支持RGB数据信号，因此驱动装置在对RGBW四色子像素的OLED显示面板进行驱动时，可以将接收到的RGB数据信号转换为RGBW数据信号后输出至源极驱动电路。
发明内容
本公开提供了一种显示面板的驱动方法及装置、显示装置，所述技术方案如下：
一方面，提供了一种显示面板的驱动装置，所述显示面板的每个像素包括至少两个不同颜色的基色子像素和一个混色子像素，所述驱动装置包括：
第一确定模块，用于根据获取到的每个基色子像素的亮度值，确定显示功耗；
补偿模块，用于根据所述显示功耗，对每个基色子像素的亮度值进行补偿；
第二确定模块，用于根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值；
输出模块，用于将各个子像素的输出亮度值输出至源极驱动电路。
可选的，所述补偿模块，用于：
根据所述显示功耗，确定功耗增益，所述功耗增益与所述显示功耗负相关；
采用所述功耗增益对每个基色子像素的亮度值进行功耗补偿。
可选的，所述补偿模块，还用于：
根据功耗补偿后的每个基色子像素的亮度值，检测显示图像是否为静止图像；
当检测到所述显示图像为静止图像时，根据所述功耗增益和所述静止图像的静止时长，确定静态增益，所述静态增益与所述功耗增益负相关，且与所述静止时长负相关；
采用所述静态增益对功耗补偿后的每个基色子像素的亮度值进行静态补偿。
可选的，所述补偿模块检测显示图像是否为静止图像的过程包括：
将所述显示图像中所有像素中各个基色子像素的亮度值相加，得到所述显示图像的亮度之和；
当所述显示图像的亮度之和与上一帧图像的亮度之和相等时，确定所述显示图像为静止图像；
当所述显示图像的亮度之和与上一帧图像的亮度之和不相等时，确定所述显示图像不为静止图像。
可选的，所述第二确定模块，用于：
根据每个基色子像素的色坐标以及所述混色子像素的色坐标，确定每个基色子像素对应的混色比例，其中每个所述基色子像素对应的混色比例是指，所述混色子像素发出的光中，所述基色子像素发出的光所占的比例；
计算补偿后的每个基色子像素的亮度值与其对应的混色比例的比值，得到各个基色子像素对应的参考亮度值；
将各个基色子像素对应的参考亮度值中，参考亮度值最小的确定为所述混色子像素的输出亮度值；
根据所述混色子像素的输出亮度值，确定每个基色子像素的输出亮度值，其中，每个所述基色子像素的输出亮度值为补偿后的所述基色子像素的亮度值与所述基色子像素的亮度分量的差值，所述基色子像素的亮度分量为所述混色 子像素的输出亮度值与所述基色子像素对应的混色比例的乘积。
可选的，所述第二确定模块，还用于：
根据目标混色光的色坐标和目标混色光在最高灰阶下的亮度值，以及混色子像素的色坐标，确定每个基色子像素在最高灰阶下的亮度值；
根据每个基色子像素在最高灰阶下的亮度值，以及每个基色子像素对应的混色比例，确定所述混色子像素在最高灰阶下的亮度值；
根据每个子像素在最高灰阶下的亮度值，以及预设的伽马值，确定每个子像素的灰阶与亮度值的对应关系；
所述装置还包括：
接收模块，用于接收每个基色子像素的显示灰阶；
第三确定模块，用于根据每个子像素的灰阶与亮度值的对应关系，确定每个基色子像素的显示灰阶所对应的亮度值。
可选的，所述输出模块，用于：
根据显示面板当前的驱动效率，确定显示面板的老化补偿系数，所述老化补偿系数与所述驱动效率负相关；
采用所述老化补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
可选的，所述输出模块，用于：
确定显示面板中驱动晶体管的驱动补偿系数；
采用所述驱动补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
另一方面，提供了一种显示面板的驱动方法，所述显示面板的每个像素包括至少两个不同颜色的基色子像素和一个混色子像素，所述方法包括：
根据获取到的每个基色子像素的亮度值，确定显示功耗；
根据所述显示功耗，对每个基色子像素的亮度值进行补偿；
根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值；
将各个子像素的输出亮度值输出至源极驱动电路。
可选的，所述根据所述显示功耗，对每个基色子像素的亮度值进行补偿，包括：
根据所述显示功耗，确定功耗增益，所述功耗增益与所述显示功耗负相关；
采用所述功耗增益对每个基色子像素的亮度值进行功耗补偿。
可选的，在采用所述功耗增益对每个基色子像素的亮度值进行功耗补偿之后，所述方法还包括：
根据功耗补偿后的每个基色子像素的亮度值，检测显示图像是否为静止图像；
当检测到所述显示图像为静止图像时，根据所述功耗增益和所述静止图像的静止时长，确定静态增益，所述静态增益与所述功耗增益负相关，且与所述静止时长负相关；
采用所述静态增益对功耗补偿后的每个基色子像素的亮度值进行静态补偿。
可选的，所述检测显示图像是否为静止图像，包括：
将所述显示图像中所有像素中各个基色子像素的亮度值相加，得到所述显示图像的亮度之和；
当所述显示图像的亮度之和与上一帧图像的亮度之和相等时，确定所述显示图像为静止图像；
当所述显示图像的亮度之和与上一帧图像的亮度之和不相等时，确定所述显示图像不为静止图像。
可选的，所述根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值，包括：
根据每个基色子像素的色坐标以及所述混色子像素的色坐标，确定每个基色子像素对应的混色比例，其中每个所述基色子像素对应的混色比例是指，所述混色子像素发出的光中，所述基色子像素发出的光所占的比例；
计算补偿后的每个所述基色子像素的亮度值与所述基色子像素的所述混色比例的比值，得到各个基色子像素对应的参考亮度值；
将各个基色子像素对应的参考亮度值中，参考亮度值最小的确定为所述混色子像素的输出亮度值；
根据所述混色子像素的输出亮度值，确定每个基色子像素的输出亮度值，其中，每个所述基色子像素的输出亮度值为补偿后的所述基色子像素的亮度值与所述基色子像素的亮度分量的差值，所述基色子像素的亮度分量为所述混色 子像素的输出亮度值与所述基色子像素对应的混色比例的乘积。
可选的，所述方法还包括：
根据目标混色光的色坐标和目标混色光在最高灰阶下的亮度值，以及混色子像素的色坐标，确定每个基色子像素在最高灰阶下的亮度值；
根据每个基色子像素在最高灰阶下的亮度值，以及每个基色子像素对应的混色比例，确定所述混色子像素在最高灰阶下的亮度值；
根据每个子像素在最高灰阶下的亮度值，以及预设的伽马值，确定每个子像素的灰阶与亮度值的对应关系；
在所述根据获取到的每个基色子像素的亮度值，确定显示功耗之前，所述方法还包括：
接收每个基色子像素的显示灰阶；
根据每个子像素的灰阶与亮度值的对应关系，确定每个基色子像素的显示灰阶所对应的亮度值。
可选的，所述将各个子像素的输出亮度值输出至源极驱动电路，包括：
根据显示面板当前的驱动效率，确定显示面板的老化补偿系数，所述老化补偿系数与所述驱动效率负相关；
采用所述老化补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
可选的，所述将各个子像素的输出亮度值输出至源极驱动电路，包括：
确定显示面板中驱动晶体管的驱动补偿系数；
采用所述驱动补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
可选的，所述显示功耗S满足：
Figure PCTCN2018107967-appb-000001
其中，n为每个像素中所包括的基色子像素的总数，Li为第i个基色子像素的亮度值，i为不大于n的正整数，min表示取最小值。
又一方面，提供了一种显示装置的驱动装置，包括：处理组件、存储器及存储在所述存储器上并可在所述处理组件上运行的计算机程序，所述处理组件执行所述计算机程序时实现如上述方面所述的显示面板的驱动方法。
再一方面，提供了一种显示装置，所述显示装置包括：显示面板，以及如上述方面所述的显示面板的驱动装置。
再一方面，提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述计算机可读存储介质在计算机上运行时，使得计算机执行如上述方面所述的显示面板的驱动方法。
附图说明
图1是本公开实施例提供的一种显示面板的驱动方法的流程图；
图2是本公开实施例提供的另一种显示面板的驱动方法的流程图；
图3是本公开实施例提供的一种根据显示功耗对每个基色子像素的亮度值进行补偿的方法流程图；
图4是本公开实施例提供的一种根据各个基色子像素的混色比例确定混色子像素的输出亮度值的示意图；
图5是本公开实施例提供的一种将各个子像素的输出亮度值输出至源极驱动电路的方法流程图；
图6是本公开实施例提供的一种确定灰阶与亮度值的对应关系的方法流程图；
图7是本公开实施例提供的一种显示面板的驱动装置的结构示意图；
图8是本公开实施例提供的另一种显示面板的驱动装置的结构示意图；
图9是本公开实施例提供的又一种显示面板的驱动装置的结构示意图；
图10是本公开实施例提供的再一种显示面板的驱动装置的结构示意图。
具体实施方式
为使本公开的原理和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
在本公开实施例提供的OLED显示面板中，每个像素可以包括至少两个不同颜色的基色子像素和一个混色子像素。例如，可以包括R、G、B三个不同颜色的基色子像素，以及一个白色的混色子像素。其中每个基色子像素中可以包括一个能够发射白光的有机发光二级管和对应颜色的彩膜，而混色子像素中则无需设置彩膜。由于彩膜的透过率较低，因此为了保证显示亮度，通常需要增大通过基色子像素中的有机发光二极管的电流，这就会增加显示面板的功耗。又由于各个基色子像素发出的光按照一定比例混合后可以产生该混色子像素所 发出的光，因此可以通过驱动该混色子像素发光，来代替部分基色子像素发出的光。由于混色子像素的透过率远远高于基色子像素的透过率，因此，在相同的亮度要求下，可大幅度的降低显示功耗。
图1是本公开实施例提供的一种显示面板的驱动方法的流程图。该方法可以应用于显示装置的驱动装置中，该显示面板的每个像素可以包括至少两个不同颜色的基色子像素和一个混色子像素。
参考图1，该方法可以包括如下工作过程：
在步骤101中，根据获取到的每个基色子像素的亮度值，确定显示功耗。
在本公开实施例中，该显示功耗与各个基色子像素的亮度值正相关，即基色子像素的亮度值越高，该显示功耗也就越高。
在步骤102中，根据该显示功耗，对每个基色子像素的亮度值进行补偿。
驱动装置可以根据该显示功耗，计算功耗增益，并根据该功耗增益对每个基色子像素的亮度值进行补偿。该功耗增益与该显示功耗可以负相关，即显示功耗越大，功耗增益越小。由此可以保证在显示装置的显示功耗较小时，增加对亮度值的补偿，以改善显示效果。当显示装置的显示功耗较大时，减小对亮度值的补偿，以避免显示功耗过大。
在步骤103中，根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值。
驱动装置可以根据补偿后的每个基色子像素的亮度值，以及基色子像素和混色子像素中各个子像素的色坐标，确定出混色子像素的输出亮度值，以及每个基色子像素的输出亮度值。也即是，可以实现RGB亮度值到RGBW亮度值的转换。其中，色坐标即颜色的坐标，通常使用(x，y，z)来表示，x表示红光在白光中的比例，y表示绿光在白光中的比例，z一般不表示，可以通过公式1-x-y计算得到，因此色坐标也可以用(x，y)来表示。
在步骤104中，将各个子像素的输出亮度值输出至源极驱动电路。
驱动装置可以将该补偿以及转换后的各个子像素的输出亮度值输出至源极驱动电路，以驱动显示面板进行显示。
示例的，驱动装置可以将各个子像素的输出亮度值直接输出至源极驱动电路；或者，驱动装置也可以将各个子像素的输出亮度值转换为显示灰阶后输出 至源极驱动电路。
综上所述，本公开实施例提供的驱动方法，在获取到基色子像素的亮度值后，可以根据显示功耗对每个基色子像素的亮度值进行补偿，使得显示功耗不同时，对亮度值的补偿程度也不同，从而能够合理利用显示装置的功耗，提高显示面板的驱动灵活性以及显示效果。
图2是本公开实施例提供的另一种显示面板的驱动方法的流程图。该方法可以应用于显示装置的驱动装置中，该显示面板的每个像素可以包括至少两个不同颜色的基色子像素和一个混色子像素。
参考图2，该方法可以包括如下工作过程：
在步骤201中，接收每个基色子像素的显示灰阶。
在本公开实施例中，驱动装置可以接收信号源发送的每个像素中每个基色子像素的显示灰阶。
在步骤202中，根据每个子像素的灰阶与亮度值的对应关系，确定每个基色子像素的显示灰阶所对应的亮度值。
驱动装置可以根据预设的灰阶与亮度值的对应关系，将显示灰阶转化为亮度值。例如，该灰阶与亮度值的对应关系可以为伽马曲线，伽马曲线可以用于表示不同颜色的子像素在不同灰阶下的显示亮度。目前常用的伽马曲线一般为伽马2.2曲线，即基色子像素的亮度值为灰阶的2.2次幂。
在步骤203中，根据每个基色子像素的亮度值，确定显示功耗。
该显示功耗与各个基色子像素的亮度值正相关，即基色子像素的亮度值越高，该显示功耗也就越高。在本公开实施例中，该显示功耗S可以满足：
Figure PCTCN2018107967-appb-000002
其中，n为每个像素中所包括的基色子像素的总数，Li为第i个基色子像素的亮度值，i为不大于n的正整数。min(L1，...，Ln)表示各个基色子像素的亮度值中的最小值，该最小值可以作为混色子像素发光时的亮度值。从上述公式(1)可以看出，该显示功耗S为各个基色子像素的亮度值之和，与各个基色子像素的亮度值中最小值的(n-1)倍的差值。由于混色子像素可以代替各个基色子像素发光，该混色子像素发光时所产生的功耗可以抵消各个基色子像素发光时的功耗。因此，在计算显示功耗时，需要将各个子像素的亮度之和减去n 倍的各个基色子像素的最小亮度。
示例的，假设显示面板中的每个像素包括R、G、B三种颜色的基色子像素(即n＝3)和一个W混色子像素，且某个像素中三个基色子像素的亮度值分别为：LR、LG、LB。则根据上述公式(1)可以确定显示面板中该像素当前的显示功耗为：S＝LR+LG+LB-2×min(LR，LG，LB)。
在步骤204中，根据该显示功耗，对每个基色子像素的亮度值进行补偿。
图3是本公开实施例提供的一种根据显示功耗对每个基色子像素的亮度值进行补偿的方法流程图。
参考图3，该补偿方法可以包括如下工作过程：
在步骤2041中，根据该显示功耗，确定功耗增益，该功耗增益与该显示功耗负相关。
在本公开实施例中，该功耗增益P与该显示功耗可以负相关，即显示功耗越大，功耗增益P越小，且该功耗增益P可以为大于0且小于等于1的数。当显示功耗小于或等于预设的最低功耗阈值时，该功耗增益P可以为1。由此可以保证在显示功耗较小时，功耗增益P较大，增加对亮度值的补偿，以改善显示效果。当显示功耗较大时，功耗增益P较小，减小对亮度值的补偿，以避免显示功耗过大。
示例的，假设驱动装置中存储有功耗范围与功耗增益P的对应关系。则驱动装置在计算得到显示功耗后，可以根据该显示功耗所处的功耗范围，确定其所对应的功耗增益P。
在步骤2042中，采用该功耗增益对每个基色子像素的亮度值进行功耗补偿。
驱动装置可以根据确定的功耗增益对每个基色子像素的亮度值进行功耗补偿。例如，将每个基色子像素的亮度值与该功耗增益相乘，即可得到功耗补偿后的亮度值。由于功耗增益与显示功耗负相关，因此显示功耗越大时，每个基色子像素补偿后的亮度值越小，可以有效降低显示面板的功耗。相应的，显示功耗越低时，每个基色子像素补偿后的亮度值越高，可以在低功耗场景下有效改善显示效果。
示例的，假设该功耗增益P为0.8，则R、G、B三种颜色的基色子像素在经过功耗补偿后的亮度值可以分别为0.8×LR、0.8×LG、0.8×LB。
在步骤2043中，根据功耗补偿后的每个基色子像素的亮度值，检测显示图 像是否为静止图像。
当检测到该显示图像为静止图像时，执行步骤2044。当检测到该显示图像不为静止图像时，可以结束操作，也即是不再进行静态补偿，直接执行后续步骤，即步骤205。
在本公开实施例中，该静止图像可以是指图像内容与上一帧显示图像的图像内容相同的图像。驱动装置可以将待显示的显示图像中，所有像素中各个基色子像素的亮度值相加，当亮度之和与上一帧图像的亮度之和相等时，可以确定该待显示的显示图像为静止图像。或者，该驱动装置也可以将各个基色子像素的显示灰阶相加，当灰阶之和与上一帧图像的灰阶之和相等时，可以确定该待显示的显示图像为静止图像。该检测显示图像是否为静止图像的方法可以有多种，本公开实施例对此不作限定。
在步骤2044中，根据该功耗增益和该静止图像的静止时长，确定静态增益。
驱动装置检测到显示图像为静止图像时，可以采用计时器记录该静止图像的静止时长，并根据预先确定的功耗增益以及记录的静止时长确定静态增益。该静止时长可以是指从检测到显示图像为静止图像开始到检测到下一帧非静止图像之间的时长。该静态增益可以与该功耗增益负相关，且与该静止时长负相关。且该静态增益也为大于0，且小于等于1的数。由于显示图像为静止图像时，该静止图像可能出现残像，影响显示效果，且静止时长越长，残像越严重，对显示效果的影响越大。因此在本公开实施例中，可以根据显示面板的功耗增益和静止图像的静止时长，对各个基色子像素的亮度值进行进一步的补偿。
示例的，在本公开实施例中，该静态增益K可以表示为：K＝f(P，t)，即该静态增益K可以为与功耗增益P和静止时长t相关的函数。例如，该静态增益K的初始值可以为1，且可以随着静止时长t的增加而逐渐减小。并且功耗增益P越大，该静态增益K随静止时长t变化的速度也越快。
在步骤2045中，采用该静态增益对功耗补偿后的每个基色子像素的亮度值进行静态补偿。
驱动装置确定静态增益后，即可采用该静态增益对功耗补偿后的每个基色子像素的亮度值进行静态补偿，以避免静止图像形成的残像对显示效果造成影响，保证了图像显示的稳定性。可选的，驱动装置在采用静态增益对亮度值进行补偿时，可以将该静态增益与经过功耗补偿后的每个基色子像素的亮度值相 乘。
示例的，假设该驱动装置根据功耗增益P和静止时长t所确定的静态增益K为0.9，则经过功耗补偿后的R、G、B三种颜色的基色子像素，再经过静态补偿后的亮度值可以分别为：LR2＝0.9×0.8×LR、LG2＝0.9×0.8×LG、LB2＝0.9×0.8×LB。
可选的，在本公开实施例中，上述步骤2043至步骤2045所示的静态补偿的步骤也可以根据情况进行删除。即驱动装置也可以仅对每个基色子像素的亮度值进行功耗补偿。
在步骤205中，根据每个基色子像素的色坐标以及该混色子像素的色坐标，确定每个基色子像素对应的混色比例。
每个基色子像素对应的混色比例是指，该混色子像素发出的光中，该基色子像素发出的光所占的比例。在本公开实施例中，可以预先驱动显示面板显示单色图像，通过色坐标测量设备实际测量每个基色子像素的色坐标以及该混色子像素的色坐标，从而可计算每个基色子像素在所述混色子像素中对应的混色比例。其中，每个基色子像素的混色比例均为大于等于0且小于等于1的数。例如，在确定红色子像素R对应的混色比例时，可以实际测量该红色子像素R的色坐标(x1，y1)，以及混色子像素的色坐标(x0，y0)，根据该测量得到的两个色坐标即可推算出该混色子像素发出的光中红色子像素发出的红光所占的比例。
根据各个子像素的色坐标计算混色比例的计算过程可以参考相关技术，本公开实施例对此不做赘述。
示例的，假设每个像素包括R、G、B三种颜色的基色子像素，如图4所示，该驱动装置计算得到红色子像素R的混色比例Rs可以为Rs＝45％，绿色子像素G的混色比例Gs可以为Gs＝35％，蓝色子像素B的混色比例Bs可以为Bs＝20％。也即是，在白色的混色子像素W所发出的光中可以包括45％的红光，35％的绿光以及20％的蓝光。
在步骤206中，计算补偿后的每个基色子像素的亮度值与其对应的混色比例的比值，得到各个基色子像素对应的参考亮度值。
每个基色子像素对应的参考亮度值即为：该基色子像素补偿后的亮度值与该基色子像素对应的混色比例的比值。
示例的，假设R、G、B三种颜色的基色子像素补偿后的亮度值分依次为：LR2、LG2、LB2，混色比例依次为：Rs、Gs、Bs。则驱动装置可以计算得到基色子像素R所对应的参考亮度值为：LR2/Rs，基色子像素G所对应的参考亮度值为：LG2/Gs，基色子像素B所对应的参考亮度值为：LB2/Bs。
在步骤207中，将各个基色子像素对应的参考亮度值中，参考亮度值最小的确定为该混色子像素的输出亮度值。
驱动装置可以对比各个基色子像素对应的参考亮度值的大小，并将参考亮度值最小的参考亮度值确定为该混色子像素的输出亮度值，以使得该混色子像素能够代替该最小的参考亮度值对应的基色子像素发光。
示例的，假设该R、G、B三个基色子像素对应的参考亮度值中，绿色子像素G对应的参考亮度值LG2/Gs最小，则该驱动装置可以将该参考亮度值LG2/Gs确定为白色的混色子像素W的输出亮度值。
在步骤208中，根据该混色子像素的输出亮度值，确定每个基色子像素的输出亮度值。
每个基色子像素的输出亮度值为补偿后的该基色子像素的亮度值与该基色子像素的亮度分量的差值。每个基色子像素的亮度分量为该混色子像素的输出亮度值与该基色子像素对应的混色比例的乘积。由此可知，最小的参考亮度值所对应的基色子像素的亮度分量即为该基色子像素补偿后的亮度值，因此该最小的参考亮度值所对应的基色子像素输出亮度值为0。相应的，显示面板中的像素在发光时，混色子像素可以代替该最小的参考亮度值所对应的基色子像素发光。通过本公开实施例提供的驱动方法，驱动显示装置显示图像时，显示面板的每个像素中可以至少有一个基色子像素无需发光。由于混色子像素的发光效率比基色子像素的发光效率高，因此在同等的发光亮度下，由混色子像素代替基色子像素发光，能够有效降低显示装置的功耗。
示例的，假设白色的混色子像素W的输出亮度值LW3＝LG2/Gs。则驱动装置可以确定红色子像素R的亮度分量为LW3×Rs，进而可以确定该红色子像素R的输出亮度值LR3满足：LR3＝LR2-LW3×Rs。绿色子像素G的亮度分量为LW3×Gs，进而可以确定该绿色子像素G的输出亮度值LG3满足：LG3＝LG2-LW3×Gs＝0。蓝色子像素B的亮度分量为LW3×Bs，进而可以确定该蓝色子像素B的输出亮度值LB3满足：LB3＝LB2-LW3×Bs。由于其中绿色 子像素G的输出亮度值为0，因此如图4所示，在显示图像时，该绿色子像素G无需发光，可以由该白色的混色子像素W代替其发光。由于白色的混色子像素W的发光效率较高，因此可以有效降低显示装置的功耗。
在步骤209中，将各个子像素的输出亮度值输出至源极驱动电路。
图5是本公开实施例提供的一种将各个子像素的输出亮度值输出至源极驱动电路的方法流程图。参考图5，该方法可以包括如下工作过程：
在步骤2091中，根据显示面板当前的驱动效率，确定显示面板的老化补偿系数，该老化补偿系数与该驱动效率负相关。
在本公开实施例中，驱动装置中可以存储有显示面板的驱动效率与老化补偿系数的对应关系。在该对应关系中，老化补偿系数与驱动效率负相关，即显示面板的驱动效率越高，该老化补偿系数越小。同样的，该老化补偿系数也为大于等于0，且小于等于1的数。
示例的，假设驱动装置中存储的驱动效率与老化补偿系数的对应关系如表1所示。从表1可以看出，显示面板的驱动效率大于等于70％，且小于80％时，对应的老化补偿系数为0.9。显示面板的驱动效率大于等于90％时，对应的老化补偿系数为0.8。若驱动装置检测到显示面板当前的驱动效率为80％，则根据表1所示的对应关系可以确定该驱动效率对应的老化补偿系数为0.85。
表1
驱动效率 ≤60％ [60％，70) [70％，80) [80％，90) ≥90％
老化补偿系数 0.99 0.95 0.9 0.85 0.8
在步骤2092中，采用该老化补偿系数对各个子像素的输出亮度值进行补偿。
由于随着显示装置的使用寿命的增长，其驱动效率会降低。为了避免该驱动效率的变化影响显示装置的显示效果，可以根据老化补偿系数对各个子像素的输出亮度值进行补偿。
示例的，假设该老化补偿系数为0.85，则驱动装置对红色子像素R的输出亮度值LR3进行补偿后的亮度值为0.85×LR3，对绿色子像素G的输出亮度值LG3进行补偿后的亮度值为0.85×LG3，对蓝色子像素B的输出亮度值LB3进行补偿后的亮度值为0.85×LB3。
在步骤2093中，确定显示面板中驱动晶体管的驱动补偿系数。
在本公开实施例中，驱动装置中还可以存储有驱动晶体管的驱动参数与驱动补偿系数的对应关系。该驱动参数可以包括驱动晶体管的阈值电压的迁移率，该驱动补偿系数与该阈值电压的迁移率正相关，即阈值电压的迁移率越大，驱动补偿系数越大。
在步骤2094中，采用该驱动补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
由于随着显示装置的使用寿命的增长，其驱动晶体管的性能会发生变化，例如其阈值电压会发生迁移。为了避免该驱动晶体管阈值电压迁移影响显示装置的显示效果，可以根据驱动补偿系数对各个子像素的输出亮度值进行补偿，并将补偿后的输出亮度值输出至源极驱动电路，以便源极驱动电路可以根据该输出亮度值驱动显示面板的各个像素发光。
可选的，在本公开实施例中，驱动装置除了可以根据驱动补偿系数对输出亮度值进行补偿，还可以实时检测驱动晶体管的阈值电压，并根据检测到的阈值电压，对该输出亮度值进行补偿，以避免阈值电压的变化影响显示面板的显示均一性。
在本公开实施例中的，该驱动装置可以为显示装置中独立集成的控制芯片，或者可以集成在显示装置的系统芯片(system on chip，SOC)或显卡上，该驱动装置可以将补偿后的输出亮度值输出至显示装置的时序控制器(timing controller，TCON)，然后由该TCON将补偿后的输出亮度值输出至源极驱动电路。或者，该驱动装置为TCON或集成在TCON的微控制单元(microcontrollerUnit，MCU)中，则该驱动装置可以直接将补偿后的输出亮度值输出至源极驱动电路。
作为一种可选的实现方式，驱动装置可以将各个子像素的输出亮度值直接输出至源极驱动电路。作为另一种可选的实现方式，驱动装置也可以将各个子像素的输出亮度值转换为显示灰阶后输出至源极驱动电路。
图6是本公开实施例提供的一种确定灰阶与亮度值的对应关系的方法流程图。参考图6，该方法可以包括如下工作过程：
在步骤210中，根据目标混色光的色坐标和目标混色光在最高灰阶下的亮度值，以及混色子像素的色坐标，确定每个基色子像素在最高灰阶下的亮度值。
在本公开实施例中，驱动装置中可以预先存储有目标混色光的色坐标(X，Y，Z)和目标混色光在最高灰阶下的亮度值L。驱动装置可以根据实际测量得到的混色子像素的色坐标，以及每个基色子像素的色坐标，根据颜色叠加定理以及亮度叠加定理(即各个基色子像素发出的光混合形成的混色光的亮度等于各个基色子像素的亮度之和)确定每个基色子像素在最高灰阶下的亮度值。
例如，假设红色子像素R的色坐标为(Rx，Ry，Rz)，绿色子像素G的色坐标为(Gx，Gy，Gz)，蓝色子像素B的色坐标为(Bx，By，Bz)，则该各个子像素发出的光混合形成的混色光的色坐标(Wx，Wy，Wz)可以满足：
Wx＝(Rx+Gx+Bx)/(Rx+Gx+Bx+Ry+Gy+By+Rz+Gz+Bz)；
Wy＝(Ry+Gy+By)/(Rx+Gx+Bx+Ry+Gy+By+Rz+Gz+Bz)；
Wz＝(Rz+Gz+Bz)/(Rx+Gx+Bx+Ry+Gy+By+Rz+Gz+Bz)。
驱动装置根据上述色坐标的对应关系，以及亮度叠加定理可以推导出各个基色子像素发出的光混合形成为目标混色光时，各个基色子像素的色坐标，以及各个基色子像素在最高灰阶下的亮度值。
在步骤211中，根据每个基色子像素在最高灰阶下的亮度值，以及每个基色子像素对应的混色比例，确定该混色子像素在最高灰阶下的亮度值。
在本公开实施例中，驱动装置可以分别计算每个基色子像素在最高灰阶下的亮度值与其对应的混色比例的比值。然后将该各个基色子像素对应的比值中，数值最小的确定为该混色子像素在最高灰阶下的亮度值。
示例的，假设该驱动装置计算得到的R、G、B三个基色子像素在最高灰阶下的亮度值分别为Rmax、Gmax和Bmax。驱动装置可以计算得到红色子像素R在最高灰阶下的亮度值与该红色子像素的混色比例的比值为Rmax/Rs、绿色子像素G在最高灰阶下的亮度值与该绿色子像素的混色比例的比值为Gmax/Gs，以及蓝色子像素B在最高灰阶下的亮度值与该蓝色子像素的混色比例的比值为Bmax/Bs。之后，驱动装置可以将该三个比值Rmax/Rs、Gmax/Gs和Bmax/Bs中，数值最小的确定为白色的混色子像素W在最高灰阶下的亮度值。
例如，假设该三个比值Rmax/Rs、Gmax/Gs和Bmax/Bs中，数值最小的比值为Gmax/Gs，则驱动装置可以确定白色的混色子像素W在最高灰阶下的亮度值为Gmax/Gs。
在步骤212中，根据每个子像素在最高灰阶下的亮度值，以及预设的伽马 值，确定每个子像素的灰阶与亮度值的对应关系。
在本公开实施例中，每个像素中的混色子像素以及各个基色子像素中，第i个子像素的灰阶与亮度值的对应关系可以表示为：
Li＝Li_max×(Gri/Gri_max)^γ    公式(2)；
其中，Li为第i个子像素的亮度值，Li_max为该第i个子像素在最高灰阶下的亮度值，Gri为第i个子像素的灰阶，Gri_max为该第i个子像素的最高灰阶，γ为预设的伽马值，且γ一般为2.2。(Gri/Gri_max)^γ表示Gri/Gri_max的γ次方。
因此，在上述步骤202中，驱动装置在获取到每个基色子像素的显示灰阶后，可以根据该公式(2)所示的对应关系，将每个基色子像素的显示灰阶转换为对应的亮度值，由此可以实现对显示面板的白平衡调整。
示例的，假设驱动装置获取到的红色子像素的显示灰阶为GrR，则驱动装置根据上述公式(2)可以确定该红色子像素的亮度值LR为：
LR＝Rmax×(GrR/GrR_max)^2.2。
其中，GrR_max为红色子像素的最高灰阶。
本公开实施例提供的显示面板的驱动方法的步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减。例如步骤2043至步骤2045可以根据情况删除，或者步骤2091至步骤2094也可以根据情况进行删除，即该驱动装置可以直接将步骤208中确定的输出亮度值输出至源极驱动电路。任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本公开的保护范围之内，因此不再赘述。
综上所述，本公开实施例提供的显示面板的驱动方法，在获取到基色子像素的亮度值后，可以根据显示功耗对每个基色子像素的亮度值进行补偿，使得显示功耗不同时，对亮度值的补偿程度也不同，从而能够合理利用显示装置的功耗，提高显示面板的驱动灵活性以及显示效果。
图7是本公开实施例提供的一种显示面板的驱动装置的结构示意图。该显示面板的每个像素包括至少两个不同颜色的基色子像素和一个混色子像素。如图7所示，该驱动装置可以包括：
第一确定模块301，用于根据获取到的每个基色子像素的亮度值，确定显示 功耗。
补偿模块302，用于根据该显示功耗，对每个基色子像素的亮度值进行补偿。
第二确定模块303，用于根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值。
输出模块304，用于将各个子像素的输出亮度值输出至源极驱动电路。
可选的，该补偿模块302可以用于：
根据该显示功耗，确定功耗增益，该功耗增益与该显示功耗负相关；采用该功耗增益对每个基色子像素的亮度值进行功耗补偿。
可选的，该补偿模块302，还可以用于：
根据功耗补偿后的每个基色子像素的亮度值，检测显示图像是否为静止图像；当检测到该显示图像为静止图像时，根据该功耗增益和该静止图像的静止时长，确定静态增益，该静态增益与该功耗增益负相关，且与该静止时长负相关；采用该静态增益对功耗补偿后的每个基色子像素的亮度值进行静态补偿。
可选的，该补偿模块302检测显示图像是否为静止图像的过程可以包括：
将该显示图像中所有像素中各个基色子像素的亮度值相加，得到该显示图像的亮度之和；
当该显示图像的亮度之和与上一帧图像的亮度之和相等时，确定该显示图像为静止图像；
当该显示图像的亮度之和与上一帧图像的亮度之和不相等时，确定该显示图像不为静止图像。
可选的，该第二确定模块303可以用于：
根据每个基色子像素的色坐标以及该混色子像素的色坐标，确定每个基色子像素对应的混色比例，其中每个基色子像素对应的混色比例是指，该混色子像素发出的光中，该基色子像素发出的光所占的比例；
计算补偿后的每个基色子像素的亮度值与其对应的混色比例的比值，得到各个基色子像素对应的参考亮度值；
将各个基色子像素对应的参考亮度值中，参考亮度值最小的确定为该混色子像素的输出亮度值；
根据该混色子像素的输出亮度值，确定每个基色子像素的输出亮度值，其中，基色子像素的输出亮度值为补偿后的该基色子像素的亮度值与该基色子像 素的亮度分量的差值，每个基色子像素的亮度分量为该混色子像素的输出亮度值与该基色子像素对应的混色比例的乘积。
可选的，该第二确定模块303，还可以用于：
根据目标混色光的色坐标和目标混色光在最高灰阶下的亮度值，以及混色子像素的色坐标，确定每个基色子像素在最高灰阶下的亮度值；
根据每个基色子像素在最高灰阶下的亮度值，以及每个基色子像素对应的混色比例，确定该混色子像素在最高灰阶下的亮度值；
根据每个子像素在最高灰阶下的亮度值，以及预设的伽马值，确定每个子像素的灰阶与亮度值的对应关系；
图8是本公开实施例提供的另一种显示面板的驱动装置的结构示意图，如图8所示，该驱动装置还可以包括：
接收模块305，用于接收每个基色子像素的显示灰阶。
第三确定模块306，用于根据每个子像素的灰阶与亮度值的对应关系，确定每个基色子像素的显示灰阶所对应的亮度值。
图9是本公开实施例提供的又一种显示面板的驱动装置的结构示意图，如图9所示，该驱动装置还可以包括：
第四确定模块307，用于根据显示面板当前的驱动效率，确定显示面板的老化补偿系数，该老化补偿系数与该驱动效率负相关。
该输出模块304，可以用于采用该老化补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
可选的，如图9所示，该驱动装置还可以包括：
第五确定模块308，确定显示面板中驱动晶体管的驱动补偿系数。
该输出模块304，可以用于采用该驱动补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
可选的，该第四确定模块307和该第五确定模块308可以是独立于输出模块304的模块；或者，也可以为该输出模块304的一部分，即该第四确定模块307和该第五确定模块308可以是输出模块304的子模块。
可选的，该显示功耗S可以满足：
Figure PCTCN2018107967-appb-000003
其中，n为每个像素中所包括的基色子像素的总数，Li为第i个基色子像素的亮度值，i为不大于n的正整数，min表示取最小值。
综上所述，本公开实施例提供的显示面板的驱动装置，该驱动装装置在获取到基色子像素的亮度值后，可以根据显示功耗对每个基色子像素的亮度值进行补偿，使得显示功耗不同时，对亮度值的补偿程度也不同，从而能够合理利用显示装置的功耗，提高显示面板的驱动灵活性以及显示效果。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的驱动装置和各模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
图10是本发明实施例提供的再一种显示装置的驱动装置的结构示意图，如图10所示，该装置可以包括：处理组件401、存储器402及存储在该存储器402上并可在处理组件401上运行的计算机程序4021，该处理组件401可以为处理电路或处理单元，该处理组件401执行该计算机程序4021时可以实现上述方法实施例所提供的显示面板的驱动方法。
在本公开实施例中，该驱动装置可以为显示装置中独立集成的控制芯片，或者可以集成在显示装置的SOC或显卡上；又或者，该驱动装置可以为TCON或集成在TCON的MCU中。
本公开实施例提供了一种计算机可读存储介质，该存储介质中存储有指令，当计算机可读存储介质在计算机上运行时，使得计算机执行上述实施例提供的显示面板的驱动方法。
本公开实施例提供一种显示装置，该显示装置可以包括显示面板以及如图7至图9任一所示的驱动装置。该显示装置可以为：液晶面板、电子纸、OLED面板、AMOLED面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
以上所述仅为本公开的可选实施例，并不用以限制本公开的范围，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开所附权利要求限定的保护范围之内。

Claims (20)

  1. 一种显示面板的驱动装置，所述显示面板的每个像素包括至少两个不同颜色的基色子像素和一个混色子像素，所述驱动装置包括：
    第一确定模块，用于根据获取到的每个基色子像素的亮度值，确定显示功耗；
    补偿模块，用于根据所述显示功耗，对每个基色子像素的亮度值进行补偿；
    第二确定模块，用于根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值；
    输出模块，用于将各个子像素的输出亮度值输出至源极驱动电路。
  2. 根据权利要求1所述的装置，其中，所述补偿模块，用于：
    根据所述显示功耗，确定功耗增益，所述功耗增益与所述显示功耗负相关；
    采用所述功耗增益对每个基色子像素的亮度值进行功耗补偿。
  3. 根据权利要求2所述的装置，其中，所述补偿模块，还用于：
    根据功耗补偿后的每个基色子像素的亮度值，检测显示图像是否为静止图像；
    当检测到所述显示图像为静止图像时，根据所述功耗增益和所述静止图像的静止时长，确定静态增益，所述静态增益与所述功耗增益负相关，且与所述静止时长负相关；
    采用所述静态增益对功耗补偿后的每个基色子像素的亮度值进行静态补偿。
  4. 根据权利要求3所述的装置，其中，所述补偿模块检测显示图像是否为静止图像的过程包括：
    将所述显示图像中所有像素中各个基色子像素的亮度值相加，得到所述显示图像的亮度之和；
    当所述显示图像的亮度之和与上一帧图像的亮度之和相等时，确定所述显示图像为静止图像；
    当所述显示图像的亮度之和与上一帧图像的亮度之和不相等时，确定所述显示图像不为静止图像。
  5. 根据权利要求1所述的装置，其中，所述第二确定模块，用于：
    根据每个基色子像素的色坐标以及所述混色子像素的色坐标，确定每个基色子像素对应的混色比例，其中每个所述基色子像素对应的混色比例是指，所述混色子像素发出的光中，所述基色子像素发出的光所占的比例；
    计算补偿后的每个所述基色子像素的亮度值与所述基色子像素的所述混色比例的比值，得到各个基色子像素对应的参考亮度值；
    将各个基色子像素对应的参考亮度值中，参考亮度值最小的确定为所述混色子像素的输出亮度值；
    根据所述混色子像素的输出亮度值，确定每个基色子像素的输出亮度值，其中，每个所述基色子像素的输出亮度值为补偿后的所述基色子像素的亮度值与所述基色子像素的亮度分量的差值，所述基色子像素的亮度分量为所述混色子像素的输出亮度值与所述基色子像素对应的混色比例的乘积。
  6. 根据权利要求5所述的装置，其中，所述第二确定模块，还用于：
    根据目标混色光的色坐标和目标混色光在最高灰阶下的亮度值，以及混色子像素的色坐标，确定每个基色子像素在最高灰阶下的亮度值；
    根据每个基色子像素在最高灰阶下的亮度值，以及每个基色子像素对应的混色比例，确定所述混色子像素在最高灰阶下的亮度值；
    根据每个子像素在最高灰阶下的亮度值，以及预设的伽马值，确定每个子像素的灰阶与亮度值的对应关系；
    所述装置还包括：
    接收模块，用于接收每个基色子像素的显示灰阶；
    第三确定模块，用于根据每个子像素的灰阶与亮度值的对应关系，确定每个基色子像素的显示灰阶所对应的亮度值。
  7. 根据权利要求1至6任一所述的装置，其中，所述输出模块，用于：
    根据显示面板当前的驱动效率，确定显示面板的老化补偿系数，所述老化 补偿系数与所述驱动效率负相关；
    采用所述老化补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
  8. 根据权利要求1至6任一所述的装置，其中，所述输出模块，用于：
    确定显示面板中驱动晶体管的驱动补偿系数；
    采用所述驱动补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
  9. 一种显示面板的驱动方法，所述显示面板的每个像素包括至少两个不同颜色的基色子像素和一个混色子像素，所述方法包括：
    根据获取到的每个基色子像素的亮度值，确定显示功耗；
    根据所述显示功耗，对每个基色子像素的亮度值进行补偿；
    根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值；
    将各个子像素的输出亮度值输出至源极驱动电路。
  10. 根据权利要求9所述的方法，其中，所述根据所述显示功耗，对每个基色子像素的亮度值进行补偿，包括：
    根据所述显示功耗，确定功耗增益，所述功耗增益与所述显示功耗负相关；
    采用所述功耗增益对每个基色子像素的亮度值进行功耗补偿。
  11. 根据权利要求10所述的方法，其中，在采用所述功耗增益对每个基色子像素的亮度值进行功耗补偿之后，所述方法还包括：
    根据功耗补偿后的每个基色子像素的亮度值，检测显示图像是否为静止图像；
    当检测到所述显示图像为静止图像时，根据所述功耗增益和所述静止图像的静止时长，确定静态增益，所述静态增益与所述功耗增益负相关，且与所述静止时长负相关；
    采用所述静态增益对功耗补偿后的每个基色子像素的亮度值进行静态补 偿。
  12. 根据权利要求11所述的方法，其中，所述检测显示图像是否为静止图像，包括：
    将所述显示图像中所有像素中各个基色子像素的亮度值相加，得到所述显示图像的亮度之和；
    当所述显示图像的亮度之和与上一帧图像的亮度之和相等时，确定所述显示图像为静止图像；
    当所述显示图像的亮度之和与上一帧图像的亮度之和不相等时，确定所述显示图像不为静止图像。
  13. 根据权利要求9所述的方法，其中，所述根据补偿后的每个基色子像素的亮度值，以及各个子像素的色坐标，确定每个子像素的输出亮度值，包括：
    根据每个基色子像素的色坐标以及所述混色子像素的色坐标，确定每个基色子像素对应的混色比例，其中每个所述基色子像素对应的混色比例是指，所述混色子像素发出的光中，所述基色子像素发出的光所占的比例；
    计算补偿后的每个所述基色子像素的亮度值与所述基色子像素的所述混色比例的比值，得到各个基色子像素对应的参考亮度值；
    将各个基色子像素对应的参考亮度值中，参考亮度值最小的确定为所述混色子像素的输出亮度值；
    根据所述混色子像素的输出亮度值，确定每个基色子像素的输出亮度值，其中，每个所述基色子像素的输出亮度值为补偿后的所述基色子像素的亮度值与所述基色子像素的亮度分量的差值，所述基色子像素的亮度分量为所述混色子像素的输出亮度值与所述基色子像素对应的混色比例的乘积。
  14. 根据权利要求13所述的方法，其中，所述方法还包括：
    根据目标混色光的色坐标和目标混色光在最高灰阶下的亮度值，以及混色子像素的色坐标，确定每个基色子像素在最高灰阶下的亮度值；
    根据每个基色子像素在最高灰阶下的亮度值，以及每个基色子像素对应的混色比例，确定所述混色子像素在最高灰阶下的亮度值；
    根据每个子像素在最高灰阶下的亮度值，以及预设的伽马值，确定每个子像素的灰阶与亮度值的对应关系；
    在所述根据获取到的每个基色子像素的亮度值，确定显示功耗之前，所述方法还包括：
    接收每个基色子像素的显示灰阶；
    根据每个子像素的灰阶与亮度值的对应关系，确定每个基色子像素的显示灰阶所对应的亮度值。
  15. 根据权利要求9至14任一所述的方法，其中，所述将各个子像素的输出亮度值输出至源极驱动电路，包括：
    根据显示面板当前的驱动效率，确定显示面板的老化补偿系数，所述老化补偿系数与所述驱动效率负相关；
    采用所述老化补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
  16. 根据权利要求9至14任一所述的方法，其中，所述将各个子像素的输出亮度值输出至源极驱动电路，包括：
    确定显示面板中驱动晶体管的驱动补偿系数；
    采用所述驱动补偿系数对各个子像素的输出亮度值进行补偿后输出至源极驱动电路。
  17. 根据权利要求9至14任一所述的方法，其中，所述显示功耗S满足：
    Figure PCTCN2018107967-appb-100001
    其中，n为每个像素中所包括的基色子像素的总数，Li为第i个基色子像素的亮度值，i为不大于n的正整数，min表示取最小值。
  18. 一种显示装置的驱动装置，包括：处理组件、存储器及存储在所述存储器上并可在所述处理组件上运行的计算机程序，所述处理组件执行所述计算机程序时实现如权利要求9至17任一所述的显示面板的驱动方法。
  19. 一种显示装置，所述显示装置包括：显示面板，以及如权利要求1至8以及权利要求18任一所述的显示面板的驱动装置。
  20. 一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述计算机可读存储介质在计算机上运行时，使得计算机执行权利要求9至17任一所述的显示面板的驱动方法。
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