WO2021088116A1 - 画面显示方法及画面显示装置 - Google Patents

画面显示方法及画面显示装置 Download PDF

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Publication number
WO2021088116A1
WO2021088116A1 PCT/CN2019/119058 CN2019119058W WO2021088116A1 WO 2021088116 A1 WO2021088116 A1 WO 2021088116A1 CN 2019119058 W CN2019119058 W CN 2019119058W WO 2021088116 A1 WO2021088116 A1 WO 2021088116A1
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Prior art keywords
sub
pixel
total current
gain coefficient
current value
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PCT/CN2019/119058
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English (en)
French (fr)
Inventor
曾玉超
王振岭
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深圳市华星光电半导体显示技术有限公司
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Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Priority to US16/624,361 priority Critical patent/US11238774B2/en
Publication of WO2021088116A1 publication Critical patent/WO2021088116A1/zh

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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
    • G09G3/22—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]
    • G09G3/3225—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] using an active matrix
    • G09G3/3233—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] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones 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
    • 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]
    • G09G3/3225—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] using an active matrix
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • 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
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • This application relates to the field of display technology, and in particular to a screen display method and screen display device.
  • AMOLED Active Matrix Organic Light Emitting Diode
  • AMOLED is a self-luminous pixel display.
  • active matrix organic light-emitting diode displays are usually required to have higher brightness specifications, and a screen with more pixels used to display high brightness than a screen with fewer pixels used to display high brightness.
  • the high power consumption also leads to the high power consumption of a screen with more pixels for displaying high brightness.
  • the purpose of this application is to provide a picture display method and picture display device to ensure that the picture display device displays a high-brightness picture while limiting the power consumption for displaying the high-brightness picture.
  • the present application provides a screen display method, which includes the following steps:
  • Step a Calculate the total current value of the sub-pixels of the picture to be displayed according to the original sub-pixel grayscale data of the picture to be displayed and the sub-pixel current look-up table data;
  • Step b Compare the total current value of the sub-pixels with the total current threshold. If the total current value of the sub-pixels is less than or equal to the total current threshold, the gain coefficient is equal to the previous-stage gain coefficient. If the total current value of the sub-pixels is Is greater than the total current threshold, the gain factor is equal to the previous stage gain factor multiplied by the current gain factor, where the previous stage gain factor is the product of the brightness gain factor and the power consumption gain factor, and the brightness gain factor Is obtained according to the original brightness data of the picture to be displayed and a preset brightness value, the power consumption gain coefficient is obtained according to the original power consumption data of the picture to be displayed and the preset power consumption value, and the current gain coefficient is equal to The ratio of the total current threshold value to the total current value of the sub-pixels;
  • Step c Calculate and output the target sub-pixel data set according to the gain coefficient and the original sub-pixel data set, the original sub-pixel data set is called out from the frame buffer;
  • Step d Perform screen display according to the target sub-pixel data set.
  • the step a includes:
  • sub-pixel grayscale histogram and the sub-pixel current look-up table data sum the currents of the sub-pixels to obtain the total current value of the sub-pixels of the picture to be displayed.
  • the step c includes:
  • the gain coefficient is multiplied by the data in the original sub-pixel data set to obtain the target sub-pixel set.
  • the method further includes the following steps:
  • Step e calculating and updating sub-pixel gray-scale data according to the gain coefficient and the original sub-pixel gray-scale data
  • the step a also includes:
  • the step b also includes:
  • step a it further includes: inputting the original sub-pixel data set.
  • a screen display method includes the following steps:
  • Step a Calculate the total current value of the sub-pixels of the picture to be displayed according to the original sub-pixel grayscale data of the picture to be displayed and the sub-pixel current look-up table data;
  • Step b Compare the total current value of the sub-pixels with the total current threshold. If the total current value of the sub-pixels is less than or equal to the total current threshold, the gain coefficient is equal to the previous-stage gain coefficient. If the total current value of the sub-pixels is Is greater than the total current threshold, the gain factor is equal to the previous stage gain factor multiplied by the current gain factor, where the previous stage gain factor is the product of the brightness gain factor and the power consumption gain factor, and the brightness gain factor Is obtained according to the original brightness data of the picture to be displayed and a preset brightness value, the power consumption gain coefficient is obtained according to the original power consumption data of the picture to be displayed and the preset power consumption value, and the current gain coefficient is equal to The ratio of the total current threshold value to the total current value of the sub-pixels;
  • Step c Calculate and output the target sub-pixel data set according to the gain coefficient and the original sub-pixel data set;
  • Step d Perform screen display according to the target sub-pixel data set.
  • the step a includes:
  • sub-pixel grayscale histogram and the sub-pixel current look-up table data sum the currents of the sub-pixels to obtain the total current value of the sub-pixels of the picture to be displayed.
  • the step c includes:
  • the gain coefficient is multiplied by the data in the original sub-pixel data set to obtain the target sub-pixel set.
  • the method further includes the following steps:
  • Step e calculating and updating sub-pixel gray-scale data according to the gain coefficient and the original sub-pixel gray-scale data
  • the step a also includes:
  • the step b also includes:
  • step a it further includes: inputting the original sub-pixel data set.
  • a picture display device comprising:
  • the sub-pixel total current value calculation module is used to calculate the sub-pixel total current value of the picture to be displayed according to the original sub-pixel gray scale data of the picture to be displayed and the data of the sub-pixel current look-up table;
  • a gain coefficient calculation module configured to compare the total current value of the sub-pixels with a total current threshold, and if the total current value of the sub-pixels is less than or equal to the total current threshold, the gain coefficient is equal to the previous-stage gain coefficient;
  • the gain factor is equal to the previous stage gain factor multiplied by the current gain factor.
  • the previous stage gain factor is the product of the brightness gain factor and the power consumption gain factor.
  • the gain coefficient is obtained according to the original brightness data of the picture to be displayed and a preset brightness value
  • the power consumption gain coefficient is obtained according to the original power consumption data of the picture to be displayed and the preset power consumption value
  • the current gain is equal to the ratio of the total current threshold value to the total current value of the sub-pixel;
  • the target sub-pixel data set output module is configured to calculate and output the target sub-pixel data set according to the gain coefficient and the original sub-pixel data set;
  • the display module is used to display the screen according to the target sub-pixel data set.
  • the sub-pixel total current calculation module includes:
  • a gray-level histogram establishment module configured to establish a sub-pixel gray-level histogram according to the original sub-pixel gray-level data
  • the total current value calculation module is configured to sum the currents of the sub-pixels according to the sub-pixel grayscale histogram and the sub-pixel current look-up table data to obtain the total sub-pixels of the picture to be displayed. Current value.
  • the target sub-pixel data set output module is used to multiply the gain coefficient by the data in the original sub-pixel data set to obtain the target sub-pixel data set.
  • the screen display device further includes:
  • a sub-pixel gray-scale data calculation module configured to calculate and update sub-pixel gray-scale data according to the gain coefficient and the original sub-pixel gray-scale data
  • the sub-pixel total current value calculation module is further configured to calculate and update the sub-pixel total current value according to the updated sub-pixel grayscale data and the sub-pixel current look-up table data;
  • the gain coefficient calculation module is also used to compare the total current value of the updated sub-pixels with the total current threshold, and is used to update the gain coefficient when the total current of the updated sub-pixels is not equal to the total current threshold.
  • the gain coefficient of is equal to the ratio of the gain coefficient before the update multiplied by the total current threshold to the total current value of the updated sub-pixel, and the updated gain coefficient is used to input into the sub-pixel gray-scale data calculation module to replace
  • the gain coefficient before updating is used to output the gain coefficient to the target sub-pixel data output module when the updated sub-pixel total current value is equal to the total current threshold.
  • the screen display device further includes an input module for inputting the original sub-pixel data set.
  • the present application provides a picture display method and picture display device.
  • the total current value of the sub-pixels of the picture to be displayed is compared with the total current threshold to output a gain coefficient for adjusting the brightness of the picture to be displayed , Adjust the original sub-pixel data set according to the gain coefficient, so that the screen display meets the highlight specification while correspondingly limiting the power consumption of the screen display.
  • FIG. 1 is a flowchart of a screen display method according to an embodiment of the application
  • FIG. 2 is a flowchart of a screen display method according to another embodiment of the application.
  • FIG. 3 is a schematic diagram of the structure of a screen display device according to an embodiment of the application.
  • FIG. 4 is a schematic structural diagram of a screen display device according to another embodiment of the application.
  • FIG. 1 is a flowchart of a screen display method according to an embodiment of the application.
  • the screen display method includes the following steps:
  • S101 Calculate the total current value of the sub-pixels of the image to be displayed according to the original sub-pixel grayscale data of the image to be displayed and the sub-pixel current look-up table data.
  • the picture display method further includes inputting the original sub-pixel data set of the picture to be displayed.
  • the sub-pixel data set includes the original sub-pixel gray scale data.
  • the sub-pixel gray scale Data requires less storage space.
  • the sub-pixels include red sub-pixels, blue sub-pixels, and green sub-pixels.
  • the gray scale of the red sub-pixel ranges from 0 to 255
  • the gray scale of the blue sub-pixel ranges from 0 to 255
  • the gray scale of the green sub-pixel ranges from 0 to 255.
  • the range is 0-255.
  • the original sub-pixel gray-scale data includes gray-scale data of multiple sub-pixels in the picture to be displayed.
  • the data of the sub-pixel current look-up table is stored in the memory.
  • the sub-pixel current look-up table includes the current values of different color sub-pixels at different gray levels.
  • the current value of the red sub-pixel when the gray level is 0 is Ir 1
  • the current value corresponding to the gray level of 127 is Ir 127
  • the current value of the blue sub-pixel when the gray level is 0 is I b1
  • the current value of the corresponding gray level of 127 is I b127
  • the green sub-pixel corresponds to The current value when the gray level is 0 is I g1
  • the current when the corresponding gray level is 127 is I g127 .
  • step S101 includes:
  • a sub-pixel gray-level histogram is established according to the original sub-pixel gray-level data.
  • a two-dimensional sub-pixel gray-level histogram is established according to the original sub-pixel gray-level data, wherein the abscissa of the sub-pixel gray-level histogram is the gray levels of the sub-pixels of different colors, and the ordinate is the number, for example, the red sub-pixel
  • the number of gray levels of 0 is m
  • the number of blue sub-pixels of gray level is n.
  • the current of each sub-pixel is summed to obtain the total current value of the sub-pixel of the picture to be displayed.
  • the currents of the sub-pixels of the same color and the same gray level are respectively multiplied by the corresponding numbers, and the three color sub-pixels are different
  • the gray-scale currents are summed, and the total current value of the sub-pixels of the picture to be displayed is calculated.
  • the display screen needs to be scaled down.
  • the current gain coefficient for proportional reduction is equal to the ratio of the total current threshold to the total current value of the sub-pixel.
  • the current gain coefficient is multiplied by the previous-stage gain coefficient In order to obtain the gain coefficient, the proportion of the picture to be displayed is reduced, while the display brightness of the picture to be displayed is ensured, and the power consumption when the picture is displayed is reduced.
  • the brightness gain coefficient can be equal to the preset brightness value divided by the maximum brightness of each sub-pixel of the picture to be displayed.
  • the preset brightness value is the designed brightness threshold of a sub-pixel
  • the power consumption gain coefficient is equal to the preset power.
  • the power consumption value is divided by the maximum power consumption of each sub-pixel of the picture to be displayed. Wherein, the power consumption of each sub-pixel is equal to the product of the driving voltage multiplied by the current flowing through the sub-pixel.
  • the input original sub-pixel data set is stored in the frame buffer.
  • the original sub-pixel data set needs to be retrieved from the frame buffer, and the gain coefficient is multiplied by the data in the original sub-pixel data set to obtain the target sub-pixel data set.
  • the data in the original sub-pixel data set includes the original sub-pixel gray-scale data.
  • the gain coefficient is multiplied by the gray-scale data of each sub-pixel to adjust the brightness and power consumption of the image to be displayed, and correspondingly limit the current of the image to be displayed, thereby reducing the image display The power consumption at the time.
  • a driving signal is output to the pixels on the display panel for screen display, and the driving signal includes a data signal.
  • the image display method of the embodiment of the present application calculates the total current value of the sub-pixels of the image to be displayed, compares the total current value of the sub-pixels with the total current threshold, to output a gain coefficient for adjusting the brightness of the image to be displayed, and adjust the original value according to the gain coefficient.
  • Sub-pixel data set so that the screen display meets the highlight specification, while correspondingly limiting the power consumption of the screen display.
  • FIG. 2 is a flowchart of a screen display method according to another embodiment of the application.
  • the screen display method includes the following steps:
  • S2011 Calculate the total current value of the sub-pixels of the image to be displayed according to the original sub-pixel grayscale data of the image to be displayed and the sub-pixel current look-up table data.
  • Step S2011 is the same as step S101, and will not be described in detail here.
  • ... S2021 Compare the total current value of the sub-pixel with the total current threshold. If the total current value of the sub-pixel is less than or equal to the total current threshold, the gain coefficient is equal to the previous stage gain coefficient; if the sub-pixel total current value is greater than the total current threshold, the gain coefficient is equal to the previous stage The gain factor is multiplied by the current gain factor.
  • the previous stage gain factor is the product of the brightness gain factor and the power consumption gain factor.
  • the brightness gain factor is obtained based on the original brightness data of the screen to be displayed and the preset brightness value.
  • the power consumption gain factor is based on the The original power consumption data of the display screen and the preset power consumption value are obtained, and the current gain coefficient is equal to the ratio of the total current threshold value to the total current value of the sub-pixels.
  • Step 2021 is the same as step 102, and will not be described in detail here.
  • S203 Calculate and update the sub-pixel gray-scale data according to the gain coefficient and the original sub-pixel gray-scale data.
  • the gain coefficient is multiplied by the original sub-pixel gray-scale data to obtain updated sub-pixel gray-scale data.
  • S2012 Calculate and update the total current value of the sub-pixel according to the updated sub-pixel grayscale data and the sub-pixel current look-up table data.
  • Step S2011 and step S2012 constitute step S201.
  • step S2022 Compare and update the total current value of the sub-pixel with the total current threshold. If the total current value of the updated sub-pixel is not equal to the total current threshold, update the gain coefficient. The updated gain coefficient is equal to the gain coefficient before the update multiplied by the total current threshold and update For the ratio of the total current value of the sub-pixels, the updated gain coefficient is input to step S203 to replace the gain coefficient before the update in step S203. If the total current value of the updated sub-pixel is equal to the total current threshold, the gain coefficient is output to step S204. Step S2022 and step S2021 constitute step S202.
  • the gain coefficient is updated, and the updated
  • the gain coefficient is equal to the gain coefficient before the update multiplied by the ratio of the total current threshold value to the total current value of the updated sub-pixels, and the updated gain coefficient is output to step S203 to replace the gain coefficient before the update in step S203. If the total current value of the updated sub-pixels is equal to the total current threshold, the total current value of the screen corresponding to the sub-pixel grayscale data adjusted according to the gain coefficient is equal to the total current threshold, so that the current displayed on the screen can be controlled at the total current threshold. While the brightness is displayed, it serves the purpose of limiting power consumption.
  • the current displayed on the screen is controlled at the total current threshold value, which achieves the purpose of limiting power consumption while achieving high-brightness display on the screen.
  • Step S204 Calculate and output the target sub-pixel data set according to the gain coefficient and the original sub-pixel data set. Step S204 is the same as step S103, and will not be described in detail here.
  • Step S205 Perform screen display according to the target sub-pixel data set. Step S205 is the same as step S104, and will not be described in detail here.
  • the screen display method of this embodiment feeds back the gain coefficient to the calculation of the total screen current, and multiple iterations can accurately limit the total current of the screen to the total current threshold.
  • FIG. 3 is a schematic structural diagram of a screen display device according to an embodiment of the application.
  • the screen display device 100 is an organic light emitting diode display, a smart mobile device, a tablet computer, and the like.
  • the screen display device 100 includes:
  • the sub-pixel total current value calculation module 101 is used to calculate the sub-pixel total current value of the picture to be displayed according to the original sub-pixel grayscale data of the picture to be displayed and the sub-pixel current look-up table data;
  • the gain coefficient calculation module 102 is used to compare the total current value of the sub-pixel with the total current threshold. If the total current value of the sub-pixel is less than or equal to the total circuit threshold, the gain coefficient is equal to the previous-stage gain coefficient. If the total current value of the sub-pixel is greater than the total current threshold, Then the gain factor is equal to the previous stage gain factor multiplied by the current gain factor.
  • the previous stage gain factor is the product of the brightness gain factor and the power consumption gain factor.
  • the brightness gain factor is obtained based on the original brightness data of the screen to be displayed and the preset brightness value.
  • the consumption gain coefficient is obtained according to the original power consumption data of the picture to be displayed and the preset power consumption value, and the current gain coefficient is obtained by the ratio of the total current threshold value to the total current value of the sub-pixel.
  • the target sub-pixel data set output module 103 is configured to calculate and output the target sub-pixel data set according to the gain coefficient and the original sub-pixel data set.
  • the display module 104 is configured to perform screen display according to the target sub-pixel data set.
  • the sub-pixel total current calculation module includes:
  • the gray-level histogram establishment module is used to establish a sub-pixel gray-level histogram according to the original sub-pixel gray-level data
  • the total current value calculation module is used for summing the currents of the sub-pixels according to the sub-pixel grayscale histogram and the sub-pixel current look-up table data to obtain the total current value of the sub-pixels of the picture to be displayed.
  • the target sub-pixel data set output module is used to multiply the gain coefficient by the data in the original sub-pixel data set to obtain the target sub-pixel data set.
  • the picture display device further includes an input module for inputting the original sub-pixel data set.
  • the picture display device of this embodiment calculates the total current value of the sub-pixels of the picture to be displayed, and compares the total current value of the sub-pixels with the total current threshold to output a gain coefficient for adjusting the brightness of the picture to be displayed, and adjust the original sub-pixel according to the gain coefficient. Pixel data set, so that the screen display meets the highlight specification, while correspondingly limiting the power consumption of the screen display.
  • FIG. 4 is a schematic structural diagram of a screen display device according to another embodiment of the application.
  • the screen display device 100 shown in FIG. 4 is basically similar to the screen display device 100 shown in FIG. 3, except that the screen display device 100 shown in FIG. 4 further includes:
  • the sub-pixel gray-scale data calculation module 105 is configured to calculate and update the sub-pixel gray-scale data according to the gain coefficient and the original sub-pixel gray-scale data.
  • the sub-pixel total current value calculation module 101 is further configured to calculate and update the sub-pixel total current value according to the updated sub-pixel grayscale data and the sub-pixel current look-up table data.
  • the gain coefficient calculation module 102 is also used to compare the updated sub-pixel total current value with the total current threshold, and is used to update the gain coefficient when the updated sub-pixel total current value is not equal to the total current threshold, and the updated gain coefficient is equal to the gain before the update
  • the coefficient is multiplied by the ratio of the total current threshold value to the total current value of the updated sub-pixel.
  • the updated gain coefficient is used in the input value sub-pixel grayscale data calculation module 105 to replace the gain coefficient before the update, and is used to update the sub-pixel When the total current value is equal to the total current threshold value, the gain coefficient is output to the target sub-pixel data output module 103.

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Abstract

一种画面显示方法及画面显示装置（100），通过计算待显示画面的子像素总电流值，将子像素总电流值与总电流阈值进行比较，以输出用于调节待显示画面亮度的增益系数，根据增益系数调节原始子像素数据集，以使得画面显示时满足高亮规格的同时，对应地限制画面显示的功耗。

Description

画面显示方法及画面显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种画面显示方法及画面显示装置。
 背景技术
有源矩阵有机发光二极管显示器（Active Matrix Organic Light Emitting Diode，AMOLED）为像素自发光显示器。为了满足消费者对显示性能需求，有源矩阵有机发光二极管显示器通常被要求具有更高的亮度规格，而用于显示高亮度的像素较多的画面比用于显示高亮度的像素较少的画面的功耗大，也导致用于显示高亮度的像素较多的画面的功耗较大。
 技术问题
本申请的目的在于提供一种画面显示方法及画面显示装置，以保证画面显示装置在显示高亮度画面的同时，限制显示高亮度画面的功耗。
 技术解决方案
为实现上述目的，本申请提供一种画面显示方法，所述方法包括如下步骤：
步骤a，根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算所述待显示画面的子像素总电流值；
步骤b，比较所述子像素总电流值和总电流阈值，若所述子像素总电流值小于或等于所述总电流阈值，则增益系数等于前级增益系数，若所述子像素总电流值大于所述总电流阈值，则所述增益系数等于所述前级增益系数乘以电流增益系数，其中，所述前级增益系数为亮度增益系数以及功耗增益系数的乘积，所述亮度增益系数是根据所述待显示画面的原始亮度数据以及预设亮度值得到，所述功耗增益系数是根据所述待显示画面的原始功耗数据以及预设功耗值得到，所述电流增益系数等于所述总电流阈值与所述子像素总电流值的比值；
步骤c，根据所述增益系数以及原始子像素数据集，计算并输出目标子像素数据集，所述原始子像素数据集是从帧缓存器中调出；
步骤d，根据所述目标子像素数据集进行画面显示。
在上述画面显示方法中，所述步骤a包括：
根据所述原始子像素灰阶数据建立一子像素灰阶直方图；
根据所述子像素灰阶直方图以及所述子像素电流查找表数据，对各所述子像素的电流进行求和，以得到所述待显示画面的所述子像素总电流值。
在上述画面显示方法中，所述步骤c包括：
将所述增益系数乘以所述原始子像素数据集中的数据，以得到所述目标子像素集。
在上述画面显示方法中，所述方法还包括如下步骤：
步骤e，根据所述增益系数以及所述原始子像素灰阶数据，计算更新子像素灰阶数据；
所述步骤a还包括：
根据所述更新子像素灰阶数据以及所述子像素电流查找表数据，计算更新子像素总电流值；
所述步骤b还包括：
比较所述更新子像素总电流值和总电流阈值，若所述更新子像素总电流值不等于总电流阈值，则更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与更新子像素总电流值的比值，更新后的所述增益系数用于输入至所述步骤e中，以替代所述步骤e中的更新前的所述增益系数，
若所述更新子像素总电流值等于所述总电流阈值，则输出所述增益系数至所述步骤c。
在上述画面显示方法中，在所述步骤a之前还包括：输入所述原始子像素数据集。
一种画面显示方法，所述方法包括如下步骤：
步骤a，根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算所述待显示画面的子像素总电流值；
步骤b，比较所述子像素总电流值和总电流阈值，若所述子像素总电流值小于或等于所述总电流阈值，则增益系数等于前级增益系数，若所述子像素总电流值大于所述总电流阈值，则所述增益系数等于所述前级增益系数乘以电流增益系数，其中，所述前级增益系数为亮度增益系数以及功耗增益系数的乘积，所述亮度增益系数是根据所述待显示画面的原始亮度数据以及预设亮度值得到，所述功耗增益系数是根据所述待显示画面的原始功耗数据以及预设功耗值得到，所述电流增益系数等于所述总电流阈值与所述子像素总电流值的比值；
步骤c，根据所述增益系数以及原始子像素数据集，计算并输出目标子像素数据集；
步骤d，根据所述目标子像素数据集进行画面显示。
在上述画面显示方法中，所述步骤a包括：
根据所述原始子像素灰阶数据建立一子像素灰阶直方图；
根据所述子像素灰阶直方图以及所述子像素电流查找表数据，对各所述子像素的电流进行求和，以得到所述待显示画面的所述子像素总电流值。
在上述画面显示方法中，所述步骤c包括：
将所述增益系数乘以所述原始子像素数据集中的数据，以得到所述目标子像素集。
在上述画面显示方法中，所述方法还包括如下步骤：
步骤e，根据所述增益系数以及所述原始子像素灰阶数据，计算更新子像素灰阶数据；
所述步骤a还包括：
根据所述更新子像素灰阶数据以及所述子像素电流查找表数据，计算更新子像素总电流值；
所述步骤b还包括：
比较所述更新子像素总电流值和总电流阈值，若所述更新子像素总电流值不等于总电流阈值，则更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与更新子像素总电流值的比值，更新后的所述增益系数用于输入至所述步骤e中，以替代所述步骤e中的更新前的所述增益系数，
若所述更新子像素总电流值等于所述总电流阈值，则输出所述增益系数至所述步骤c。
在上述画面显示方法中，在所述步骤a之前还包括：输入所述原始子像素数据集。
一种画面显示装置，所述画面显示装置包括：
子像素总电流值计算模块，用于根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算待显示画面的子像素总电流值；
增益系数计算模块，用于比较所述子像素总电流值和总电流阈值，若所述子像素总电流值小于或等于所述总电流阈值，则所述增益系数等于前级增益系数；
若所述子像素总电流值大于总电流阈值，则所述增益系数等于前级增益系数乘以电流增益系数，所述前级增益系数为亮度增益系数以及功耗增益系数的乘积，所述亮度增益系数是根据所述待显示画面的原始亮度数据以及预设亮度值得到，所述功耗增益系数是根据所述待显示画面的原始功耗数据以及预设功耗值得到，所述电流增益系数等于所述总电流阈值与所述子像素总电流值的比值；
目标子像素数据集输出模块，用于根据所述增益系数以及原始子像素数据集，计算并输出目标子像素数据集；
显示模块，用于根据所述目标子像素数据集进行画面显示。
在上述画面显示装置中，所述子像素总电流计算模块包括：
灰阶直方图建立模块，用于根据所述原始子像素灰阶数据建立一子像素灰阶直方图；
总电流值计算模块，用于根据所述子像素灰阶直方图以及所述子像素电流查找表数据，对各子像素的电流进行求和，以得到所述待显示画面的所述子像素总电流值。
在上述画面显示装置中，所述目标子像素数据集输出模块用于将所述增益系数乘以所述原始子像素数据集中的数据，以得到所述目标子像素数据集。
在上述画面显示装置中，所述画面显示装置还包括：
子像素灰阶数据计算模块，用于根据所述增益系数以及所述原始子像素灰阶数据，计算更新子像素灰阶数据；
所述子像素总电流值计算模块还用于根据所述更新子像素灰阶数据以及所述子像素电流查找表数据，计算更新子像素总电流值；
所述增益系数计算模块还用于比较所述更新子像素总电流值和所述总电流阈值，并用于在所述更新子像素总电流不等于所述总电流阈值时，更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与所述更新子像素总电流值的比值，更新后的所述增益系数用于输入至所述子像素灰阶数据计算模块中，以替代更新前的所述增益系数，以及用于在所述更新子像素总电流值等于所述总电流阈值时输出所述增益系数至所述目标子像素数据输出模块中。
在上述画面显示装置中，所述画面显示装置还包括输入模块，用于输入所述原始子像素数据集。
 有益效果
本申请提供一种画面显示方法及画面显示装置，通过计算待显示画面的子像素总电流值，将子像素总电流值与总电流阈值进行比较，以输出用于调节待显示画面亮度的增益系数，根据增益系数调节原始子像素数据集，以使得画面显示时满足高亮规格的同时，对应地限制画面显示的功耗。
 附图说明
图1为本申请一实施例画面显示方法的流程图；
图2为本申请另一实施例画面显示方法的流程图；
图3为本申请一实施例画面显示装置的结构示意图；
图4为本申请另一实施例画面显示装置的结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1，其为本申请一实施例画面显示方法的流程图。画面显示方法包括如下步骤：
S101：根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算待显示画面的子像素总电流值。
在步骤S101之前，画面显示方法还包括输入待显示画面的原始子像素数据集，子像素数据集包括原始子像素灰阶数据，相较于原始子像素数据集包括原始亮度数据，子像素灰阶数据需要的存储空间更少。子像素包括红色子像素、蓝色子像素以及绿色子像素。一般而言，每个子像素由8个bit构成时，红色子像素的灰阶取值范围为0-255，蓝色子像素的灰阶取值为0-255，绿色子像素的灰阶取值范围为0-255。原始子像素灰阶数据包括待显示画面中多个子像素的灰阶数据。子像素电流查找表的数据存储在存储器中，子像素电流查找表中包括不同颜色子像素在不同灰阶时对应的电流值，例如红色子像素对应灰阶为0时的电流取值为Ir 1，对应灰阶为127时的电流取值为Ir 127；蓝色子像素对应灰阶为0时的电流取值为I b1，对应灰阶127时的电流取值为I b127；绿色子像素对应灰阶为0时的电流取值为I g1，对应灰阶为127时的电流取值为I g127。
在本实施例中，步骤S101包括：
根据原始子像素灰阶数据建立一子像素灰阶直方图。
具体地，根据原始子像素灰阶数据建立一个二维子像素灰阶直方图，其中，子像素灰阶直方图的横坐标为不同颜色子像素的灰阶，纵坐标为数目，例如红色子像素灰阶为0的数目为m，蓝色子像素灰阶为127的数目为n。
根据子像素灰阶直方图以及子像素电流查找表数据，对各子像素的电流进行求和，以得到待显示画面的子像素总电流值。
具体地，根据子像素电流查找表中不同颜色子像素灰阶与电流值的对应关系，分别将同一颜色且同一灰阶的子像素的电流乘以对应的数目，并将三种颜色子像素不同灰阶的电流进行加和，计算得到待显示画面的子像素总电流值。
     S102: 比较子像素总电流值和总电流阈值，若子像素总电流值小于或等于总电流阈值，则增益系数等于前级增益系数，若子像素总电流值大于总电流阈值，则增益系数等于前级增益系数乘以电流增益系数，前级增益系数为亮度增益系数以及功耗增益系数的乘积，亮度增益系数是根据待显示画面的原始亮度数据以及预设亮度值得到，功耗增益系数是根据待显示画面的原始功耗数据以及预设功耗值得到，电流增益系数等于总电流阈值与子像素总电流值的比值。
若子像素总电流值小于或等于总电流阈值，则不需要对待显示画面进行缩减，则只需要根据用于调整待显示画面亮度以及能耗的前级增益系数调整原始子像素数据集中的数据，即可使得显示画面在高亮度的情况下，限制画面显示时的功耗。若子像素总电流值大于总电流阈值，则需要对待显示画面进行比例缩减，进行比例缩减的电流增益系数等于总电流阈值与子像素总电流值的比值，另外，使得电流增益系数乘以前级增益系数以得到增益系数，实现待显示画面比例缩减的同时，保证待显示画面的显示亮度的同时，降低画面显示时的功耗。
需要说明的是，亮度增益系数可以等于预设亮度值除以待显示画面的各子像素的亮度最大值，预设亮度值为设计的一个子像素的亮度阈值，功耗增益系数等于预设功耗值除以待显示画面的各子像素的功耗最大值。其中，每个子像素的功耗等于驱动电压乘以流过该子像素的电流的乘积。
     S103，根据增益系数以及原始子像素数据集，计算并输出目标子像素数据集。
具体地，输入的原始子像素数据集存储在帧缓存器中，需要使用原始子像素数据集是从帧缓存器中调出，将增益系数乘以原始子像素数据集中的数据，以得到目标子像素数据集。原始子像素数据集中的数据包括原始子像素灰阶数据，增益系数乘以每个子像素的灰阶数据，从而调整待显示画面的亮度以及功耗，对应限制待显示画面的电流，从而降低画面显示时的功耗。
     S104，根据目标子像素数据集进行画面显示。
具体地，根据目标子像素数据集中的数据输出驱动信号至显示面板上的像素，以进行画面显示，驱动信号包括数据信号。
本申请实施例画面显示方法通过计算待显示画面的子像素总电流值，将子像素总电流值与总电流阈值进行比较，以输出用于调节待显示画面亮度的增益系数，根据增益系数调节原始子像素数据集，以使得画面显示时满足高亮规格的同时，对应地限制画面显示的功耗。
请参阅图2，其为本申请另一实施例画面显示方法的流程图。该画面显示方法包括如下步骤:
     S2011: 根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算待显示画面的子像素总电流值。
步骤S2011与步骤S101相同，此处不作详述。
     S2021：比较子像素总电流值和总电流阈值，若子像素总电流值小于或等于总电流阈值，则增益系数等于前级增益系数；若子像素总电流值大于总电流阈值，则增益系数等于前级增益系数乘以电流增益系数，前级增益系数为亮度增益系数以及功耗增益系数的乘积，亮度增益系数是根据待显示画面的原始亮度数据以及预设亮度值得到，功耗增益系数是根据待显示画面的原始功耗数据以及预设功耗值得到，电流增益系数等于总电流阈值与子像素总电流值的比值。
步骤2021与步骤102相同，此处不作详述。
S203：根据增益系数以及原始子像素灰阶数据，计算更新子像素灰阶数据。
具体地，增益系数乘以原始子像素灰阶数据，以得到更新子像素灰阶数据。
S2012：根据更新子像素灰阶数据以及子像素电流查找表数据，计算更新子像素总电流值。
具体地，根据更新子像素灰阶数据建立更新子像素灰阶直方图，根据更新子像素灰阶直方图以及子像素电流查找表数据，对各子像素的电流进行求和，以得到待显示画面的更新子像素总电流值。步骤S2011和步骤S2012构成步骤S201。
S2022：比较更新子像素总电流值和总电流阈值，若更新子像素总电流值不等于总电流阈值，则更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与更新子像素总电流值的比值，更新后的增益系数输入至步骤S203，以替代步骤S203中更新前的增益系数，若更新子像素总电流值等于总电流阈值，则输出增益系数至步骤S204。步骤S2022和步骤S2021构成步骤S202。
若更新子像素总电流值小于或等于总电流阈值，则更新增益系数，更新后的
增益系数等于更新前的增益系数乘以总电流阈值与更新子像素总电流值的比值，再使更新后的增益系数输出至步骤S203中，以替代步骤S203中更新前的增益系数。若更新子像素总电流值等于总电流阈值，则根据增益系数调整的子像素灰阶数据对应的画面总电流值等于总电流阈值，能使画面显示的电流控制在总电流阈值，在画面实现高亮度显示的同时，起到限制功耗的目的。即，通过迭代计算更新增益系数以使得更新子像素总电流值等于总电流阈值，从而使画面显示的电流控制在总电流阈值，在画面实现高亮度显示的同时，起到限制功耗的目的。
S204: 根据增益系数以及原始子像素数据集，计算并输出目标子像素数据集。步骤S204与步骤S103相同，此处不作详述。
S205: 根据目标子像素数据集进行画面显示。步骤S205与步骤S104相同，此处不作详述。
相对于图1所示画面显示方法，本实施例画面显示方法将增益系数反馈至画面总电流计算中，多次迭代可精准地将画面总电流限制在总电流阈值。
请参阅图3，其为本申请一实施例画面显示装置的结构示意图。画面显示装置100为有机发光二极管显示器、智能移动设备以及平板电脑等。画面显示装置100包括：
子像素总电流值计算模块101，用于根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算待显示画面的子像素总电流值；
增益系数计算模块102，用于比较子像素总电流值和总电流阈值，若子像素总电流值小于或等于总电路阈值，则增益系数等于前级增益系数，若子像素总电流值大于总电流阈值，则增益系数等于前级增益系数乘以电流增益系数，前级增益系数为亮度增益系数以及功耗增益系数的乘积，亮度增益系数是根据待显示画面的原始亮度数据以及预设亮度值得到，功耗增益系数是根据待显示画面的原始功耗数据以及预设功耗值得到，电流增益系数等于总电流阈值与子像素总电流值的比值得到。
目标子像素数据集输出模块103，用于根据增益系数以及原始子像素数据集，计算并输出目标子像素数据集。
显示模块104，用于根据目标子像素数据集进行画面显示。
在本实施例中，子像素总电流计算模块包括：
灰阶直方图建立模块，用于根据原始子像素灰阶数据建立一子像素灰阶直方图；
总电流值计算模块，用于根据子像素灰阶直方图以及子像素电流查找表数据，对各子像素的电流进行求和，以得到待显示画面的子像素总电流值。
在本实施例中，目标子像素数据集输出模块用于将增益系数乘以原始子像素数据集中的数据，以得到目标子像素数据集。
在本实施例中，画面显示装置还包括输入模块，用于输入原始子像素数据集。
本实施例画面显示装置通过计算待显示画面的子像素总电流值，将子像素总电流值与总电流阈值进行比较，以输出用于调节待显示画面亮度的增益系数，根据增益系数调节原始子像素数据集，以使得画面显示时满足高亮规格的同时，对应地限制画面显示的功耗。
请参阅图4，其为本申请另一实施例画面显示装置的结构示意图。图4所示画面显示装置100与图3所示画面显示装置100基本相似，不同之处在于，图4所示画面显示装置100还包括：
子像素灰阶数据计算模块105，用于根据增益系数以及原始子像素灰阶数据，计算更新子像素灰阶数据。
子像素总电流值计算模块101还用于根据更新子像素灰阶数据以及子像素电流查找表数据，计算更新子像素总电流值。
增益系数计算模块102还用于比较更新子像素总电流值和总电流阈值，并用于在更新子像素总电流值不等于总电流阈值时，更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与更新子像素总电流值的比值，更新后的增益系数用于输入值子像素灰阶数据计算模块105中，以替代更新前的增益系数，以及用于在更新子像素总电流值等于总电流阈值时输出增益系数至目标子像素数据输出模块103中。
以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (15)

  1. 一种画面显示方法，其中，所述方法包括如下步骤：
    步骤a，根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算所述待显示画面的子像素总电流值；
    步骤b，比较所述子像素总电流值和总电流阈值，若所述子像素总电流值小于或等于所述总电流阈值，则增益系数等于前级增益系数，若所述子像素总电流值大于所述总电流阈值，则所述增益系数等于所述前级增益系数乘以电流增益系数，其中，所述前级增益系数为亮度增益系数以及功耗增益系数的乘积，所述亮度增益系数是根据所述待显示画面的原始亮度数据以及预设亮度值得到，所述功耗增益系数是根据所述待显示画面的原始功耗数据以及预设功耗值得到，所述电流增益系数等于所述总电流阈值与所述子像素总电流值的比值；
    步骤c，根据所述增益系数以及原始子像素数据集，计算并输出目标子像素数据集，所述原始子像素数据集是从帧缓存器中调出；
    步骤d，根据所述目标子像素数据集进行画面显示。
  2. 根据权利要求1所述的画面显示方法，其中，所述步骤a包括：
    根据所述原始子像素灰阶数据建立一子像素灰阶直方图；
    根据所述子像素灰阶直方图以及所述子像素电流查找表数据，对各所述子像素的电流进行求和，以得到所述待显示画面的所述子像素总电流值。
  3. 根据权利要求1所述的画面显示方法，其中，所述步骤c包括：
    将所述增益系数乘以所述原始子像素数据集中的数据，以得到所述目标子像素集。
  4. 根据权利要求1所述的画面显示方法，其中，所述方法还包括如下步骤：
    步骤e，根据所述增益系数以及所述原始子像素灰阶数据，计算更新子像素灰阶数据；
    所述步骤a还包括：
    根据所述更新子像素灰阶数据以及所述子像素电流查找表数据，计算更新子像素总电流值；
    所述步骤b还包括：
    比较所述更新子像素总电流值和总电流阈值，若所述更新子像素总电流值不等于总电流阈值，则更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与更新子像素总电流值的比值，更新后的所述增益系数用于输入至所述步骤e中，以替代所述步骤e中的更新前的所述增益系数，
    若所述更新子像素总电流值等于所述总电流阈值，则输出所述增益系数至所述步骤c。
  5. 根据权利要求1所述的画面显示方法，其中，在所述步骤a之前还包括：输入所述原始子像素数据集。
  6. 一种画面显示方法，其中，所述方法包括如下步骤：
    步骤a，根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算所述待显示画面的子像素总电流值；
    步骤b，比较所述子像素总电流值和总电流阈值，若所述子像素总电流值小于或等于所述总电流阈值，则增益系数等于前级增益系数，若所述子像素总电流值大于所述总电流阈值，则所述增益系数等于所述前级增益系数乘以电流增益系数，其中，所述前级增益系数为亮度增益系数以及功耗增益系数的乘积，所述亮度增益系数是根据所述待显示画面的原始亮度数据以及预设亮度值得到，所述功耗增益系数是根据所述待显示画面的原始功耗数据以及预设功耗值得到，所述电流增益系数等于所述总电流阈值与所述子像素总电流值的比值；
    步骤c，根据所述增益系数以及原始子像素数据集，计算并输出目标子像素数据集；
    步骤d，根据所述目标子像素数据集进行画面显示。
  7. 根据权利要求6所述的画面显示方法，其中，所述步骤a包括：
    根据所述原始子像素灰阶数据建立一子像素灰阶直方图；
    根据所述子像素灰阶直方图以及所述子像素电流查找表数据，对各所述子像素的电流进行求和，以得到所述待显示画面的所述子像素总电流值。
  8. 根据权利要求6所述的画面显示方法，其中，所述步骤c包括：
    将所述增益系数乘以所述原始子像素数据集中的数据，以得到所述目标子像素集。
  9. 根据权利要求6所述的画面显示方法，其中，所述方法还包括如下步骤：
    步骤e，根据所述增益系数以及所述原始子像素灰阶数据，计算更新子像素灰阶数据；
    所述步骤a还包括：
    根据所述更新子像素灰阶数据以及所述子像素电流查找表数据，计算更新子像素总电流值；
    所述步骤b还包括：
    比较所述更新子像素总电流值和总电流阈值，若所述更新子像素总电流值不等于总电流阈值，则更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与更新子像素总电流值的比值，更新后的所述增益系数用于输入至所述步骤e中，以替代所述步骤e中的更新前的所述增益系数，
    若所述更新子像素总电流值等于所述总电流阈值，则输出所述增益系数至所述步骤c。
  10. 根据权利要求6所述的画面显示方法，其中，在所述步骤a之前还包括：输入所述原始子像素数据集。
  11. 一种画面显示装置，其中，所述画面显示装置包括：
    子像素总电流值计算模块，用于根据待显示画面的原始子像素灰阶数据以及子像素电流查找表数据，计算待显示画面的子像素总电流值；
    增益系数计算模块，用于比较所述子像素总电流值和总电流阈值，若所述子像素总电流值小于或等于所述总电流阈值，则所述增益系数等于前级增益系数，若所述子像素总电流值大于总电流阈值，则所述增益系数等于前级增益系数乘以电流增益系数，所述前级增益系数为亮度增益系数以及功耗增益系数的乘积，所述亮度增益系数是根据所述待显示画面的原始亮度数据以及预设亮度值得到，所述功耗增益系数是根据所述待显示画面的原始功耗数据以及预设功耗值得到，所述电流增益系数等于所述总电流阈值与所述子像素总电流值的比值；
    目标子像素数据集输出模块，用于根据所述增益系数以及原始子像素数据集，计算并输出目标子像素数据集；
    显示模块，用于根据所述目标子像素数据集进行画面显示。
  12. 根据权利要求11所述的画面显示装置，其中，所述子像素总电流计算模块包括：
    灰阶直方图建立模块，用于根据所述原始子像素灰阶数据建立一子像素灰阶直方图；
    总电流值计算模块，用于根据所述子像素灰阶直方图以及所述子像素电流查找表数据，对各子像素的电流进行求和，以得到所述待显示画面的所述子像素总电流值。
  13. 根据权利要求11所述的画面显示装置，其中，所述目标子像素数据集输出模块用于将所述增益系数乘以所述原始子像素数据集中的数据，以得到所述目标子像素数据集。
  14. 根据权利要求11所述的画面显示装置，其中，所述画面显示装置还包括：
    子像素灰阶数据计算模块，用于根据所述增益系数以及所述原始子像素灰阶数据，计算更新子像素灰阶数据；
    所述子像素总电流值计算模块还用于根据所述更新子像素灰阶数据以及所述子像素电流查找表数据，计算更新子像素总电流值；
    所述增益系数计算模块还用于比较所述更新子像素总电流值和所述总电流阈值，并用于在所述更新子像素总电流不等于所述总电流阈值时，更新增益系数，更新后的增益系数等于更新前的增益系数乘以总电流阈值与所述更新子像素总电流值的比值，更新后的所述增益系数用于输入至所述子像素灰阶数据计算模块中，以替代更新前的所述增益系数，以及用于在所述更新子像素总电流值等于所述总电流阈值时输出所述增益系数至所述目标子像素数据输出模块中。
  15. 根据权利要求11所述的画面显示装置，其中，所述画面显示装置还包括输入模块，用于输入所述原始子像素数据集。
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