WO2020118767A1 - 显示面板的驱动方法及驱动装置、显示装置 - Google Patents

显示面板的驱动方法及驱动装置、显示装置 Download PDF

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Publication number
WO2020118767A1
WO2020118767A1 PCT/CN2018/123357 CN2018123357W WO2020118767A1 WO 2020118767 A1 WO2020118767 A1 WO 2020118767A1 CN 2018123357 W CN2018123357 W CN 2018123357W WO 2020118767 A1 WO2020118767 A1 WO 2020118767A1
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Prior art keywords
data
difference
current frame
processed
standard
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PCT/CN2018/123357
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English (en)
French (fr)
Inventor
王明良
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惠科股份有限公司
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Priority to US16/982,072 priority Critical patent/US11308899B2/en
Publication of WO2020118767A1 publication Critical patent/WO2020118767A1/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
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • 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
    • G09G2320/10—Special adaptations of display systems for operation with variable images
    • G09G2320/103—Detection of image changes, e.g. determination of an index representative of the image change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/16—Determination of a pixel data signal depending on the signal applied in the previous frame
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/10—Use of a protocol of communication by packets in interfaces along the display data pipeline
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/14—Use of low voltage differential signaling [LVDS] for display data communication

Definitions

  • the present application relates to the field of display technology, and in particular, to a driving method of a display panel, a driving device, and a display device.
  • the display architecture of a TV usually includes the SOC (single on chip (system-on-chip) chip and T-CON (Timming) on the control board Controller (timing controller) chip, the image input signal of the display architecture is usually input by the antenna or the set-top box, after being processed by the SOC chip, the signal is then passed to the T-CON chip on the control board for reprocessing, and finally the chip is driven by the data To drive the LCD panel; SOC Low-Voltage Differential Signal (Low-Voltage Differential) is usually passed between the chip and the T-CON chip Signaling (LVDS) transmission protocol communication connection, the SOC chip encodes the transmitted image signal according to the protocol and transmits it to the T-CON chip for a series of color processing.
  • SOC single on chip
  • T-CON Transmission protocol controller
  • the signal is greatly modified; especially for the static screen display, the display data of the same display position before and after the two times will become completely different, and The more color processing steps, the greater the difference, and the problem of flickering pictures is prone to occur.
  • the embodiments of the present application solve the problem that the liquid crystal display panel in the prior art is prone to flickering pictures by providing a driving method and a driving device for a display panel, and a display device.
  • An embodiment of the present application provides a driving method of a display panel.
  • the driving method includes the following steps:
  • Multi-level color processing is performed on the original data of the current frame to obtain the processed data of the current frame; at the same time, the first difference is converted into a standard deviation by standard conversion;
  • the display panel is driven according to the output data.
  • the step of determining the output data according to the deviation range of the processed data of the current frame specifically includes:
  • the step of outputting the data for performing deviation correction on the data processed in the previous frame is specifically:
  • the step of performing multi-level color processing on the original data of the current frame to obtain the processed data of the current frame specifically includes:
  • Color processing the original data of the current frame is processed by color to obtain the first-level processed data of the current frame;
  • Digital gamma processing the original data of the current frame is processed by digital gamma to obtain the second-level processed data of the current frame;
  • the original data of the current frame is dithered to obtain the third-level processed data of the current frame.
  • the original data of the current frame undergoes the three-level color processing of color processing, digital gamma processing, and dithering processing to obtain the final processed data of the current frame;
  • the final processed data b of the current frame is obtained.
  • the steps of digital gamma processing specifically include:
  • the step of converting the first difference into a standard deviation by standard conversion is specifically as follows:
  • the standard difference value corresponding to the first difference value is obtained by querying a standard table according to the current gray scale range and the first difference value.
  • the step of obtaining the first difference further includes:
  • the original data of the current frame and the first difference are combined, encoded and transmitted according to a preset protocol, and then decoded and separated.
  • the step of combining the original data of the current frame and the first difference after encoding and transmission according to a preset transmission protocol and then decoding and separating specifically includes: first dividing the original data of the current frame according to color, including red primary color data, Green primary color data and blue primary color data, each of the primary color data has 8 bits, the red primary color data includes AR0-AR7, the green primary color data includes AG0-AG7, and the blue primary color data includes AB0-AB7; the first difference ⁇ 1 is in accordance with The color division includes a red primary color data difference value, a green primary color data difference value and a blue primary color data difference value; each of the primary color data difference values has 3 bits.
  • the preset protocol is a low-voltage differential signal transmission protocol
  • the low-voltage differential signal includes 4 pairs of differential signals corresponding to the original data of the current frame and 1 pair of differential signals corresponding to the first difference.
  • An embodiment of the present application further provides a driving device for a display panel.
  • the driving device includes:
  • the main control chip is configured to receive the original image signal and compare the difference between the original data of the current frame of the original image signal and the original data of the previous frame to obtain a first difference; After a difference is combined, it is encoded and transmitted according to the preset protocol;
  • the timing control chip is connected to the main control chip through a preset protocol, and is configured to receive the transmitted code and decode the current frame original data and the first difference; multi-level color processing is performed on the current frame original data to obtain the current Frame-processed data; convert the first difference to a standard deviation by a standard conversion process; determine whether the standard difference is greater than or equal to a preset value, and if so, output the current frame-processed data; if not, then Compare the difference between the processed data of the current frame and the processed data of the previous frame to obtain a second difference; compare the size of the standard difference and the second difference when the standard deviation When the value is greater than or equal to the second difference, it is determined that the deviation of the processed data of the current frame is small, and the processed data of the current frame is directly output; when the standard deviation value is less than the second difference Value, it is determined that the deviation range of the processed data of the current frame is large, and the processed data of the previous frame is added or subtracted to the first difference value and output as corrected data;
  • the driving chip is connected to the output end of the timing control chip, and is configured to drive the display panel according to the data output by the timing control chip.
  • the standard conversion process includes obtaining the current grayscale range of the original data of the current frame, and querying a standard table according to the current grayscale range and the first difference to obtain a standard deviation corresponding to the first difference.
  • the preset protocol is a low-voltage differential signal transmission protocol
  • the low-voltage differential signal includes 4 pairs of differential signals corresponding to the original data of the current frame and 1 pair of differential signals corresponding to the first difference.
  • An embodiment of the present application further provides a display device, which includes a display panel and the above-mentioned display panel driving device; the display panel driving device includes:
  • the main control chip is configured to receive the original image signal and compare the difference between the original data of the current frame of the original image signal and the original data of the previous frame to obtain a first difference; After a difference is combined, it is encoded and transmitted according to the preset protocol;
  • the timing control chip is connected to the main control chip through a preset protocol, and is configured to receive the transmitted code and decode the current frame original data and the first difference; multi-level color processing is performed on the current frame original data to obtain the current Frame-processed data; convert the first difference to a standard deviation by a standard conversion process; determine whether the standard difference is greater than or equal to a preset value, and if so, output the current frame-processed data; if not, then Compare the difference between the processed data of the current frame and the processed data of the previous frame to obtain a second difference; compare the size of the standard difference and the second difference when the standard deviation When the value is greater than or equal to the second difference, it is determined that the deviation of the processed data of the current frame is small, and the processed data of the current frame is directly output; when the standard deviation value is less than the second difference Value, it is determined that the deviation range of the processed data of the current frame is large, and the processed data of the previous frame is added or subtracted to the first difference value and output as corrected data;
  • the driving chip is connected to the output end of the timing control chip, and is configured to drive the display panel according to the data output by the timing control chip.
  • the standard conversion process includes obtaining the current grayscale range of the original data of the current frame, and querying a standard table according to the current grayscale range and the first difference to obtain a standard deviation corresponding to the first difference.
  • the preset protocol is a low-voltage differential signal transmission protocol
  • the low-voltage differential signal includes 4 pairs of differential signals corresponding to the original data of the current frame and 1 pair of differential signals corresponding to the first difference.
  • timing controller when the timing controller is configured to determine the output data according to the deviation range of the processed data of the current frame:
  • timing controller when configured to perform deviation correction on the data processed in the previous frame, it is specifically:
  • the main control chip compares the original data of the current frame with the original data of the previous frame to obtain a first difference, and transmits the first difference and the original data of the current frame to the timing control chip.
  • the timing control chip passes the first difference to the standard
  • the standard deviation value is obtained after conversion; and the second difference value is obtained by comparing the processed data of the current frame and the previous frame processed data, and comparing the size of the standard deviation and the second difference value, According to the comparison results, the corresponding data is output, and the driver chip outputs the corresponding driving signal to the display panel according to the data output by the timing control chip; through the above scheme, when the transmitted image is a static picture, the data received by the display panel can be guaranteed Processing effect, and solved the flicker problem of the display panel.
  • FIG. 1 is a schematic diagram of steps of an embodiment of a method for driving a display panel of the present application
  • FIG. 2 is a block schematic diagram of an embodiment of a driving device for a display panel of the present application
  • FIG. 3 is a schematic diagram of low-voltage differential signal transmission protocol encoding of the display panel driving device of the present application.
  • [Correction 22.01.2019 according to Rule 91] 4 is a schematic diagram of steps of another embodiment of a driving method of a display panel of the present application.
  • first, second, etc. in this application are only configured for descriptive purposes, they cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features.
  • the features defined with “first” and “second” may include at least one of the features either explicitly or implicitly.
  • the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary people in the art to achieve, when the combination of technical solutions conflicts with each other or cannot be realized, it should be considered that the combination of such technical solutions does not exist , Nor within the scope of protection required by this application.
  • an embodiment of the present application provides a driving method of a display panel
  • the driving method includes the following steps:
  • Step S100 Receive the original image signal, compare the difference between the original data of the current frame and the original data of the previous frame of the original image signal, and obtain the first difference ⁇ 1.
  • Step S200 the original data of the current frame and the first difference ⁇ 1 are combined, encoded and transmitted according to a preset protocol, and then decoded and separated.
  • Step S300 Perform multi-level color processing on the original data of the current frame to obtain the processed data of the current frame; at the same time, convert the first difference ⁇ 1 into a standard deviation ⁇ through standard conversion.
  • Step S400 determine whether the standard deviation ⁇ is greater than or equal to a preset value ⁇ 0;
  • Step S510 If yes, output the processed data of the current frame
  • Step S520 If not, the output data is determined according to the deviation range of the processed data of the current frame.
  • Step S600 Drive the display panel according to the output data.
  • the display panel is usually a liquid crystal display panel of an electronic device with a display function such as a television or a computer, and the driving method is formed based on a driving device of the liquid crystal display panel.
  • the driving device of the display panel is mainly composed of the main control chip 100 on the main board of the TV, the timing control chip 200 on the control board and the driving chip 300 connected in sequence, the main control chip 100 and the timing control chip Between 200 through low-voltage differential signal (Low-Voltage Differential Signaling (LVDS) transmission protocol communication connection.
  • LVDS Low-Voltage Differential Signaling
  • the input terminal of the main control chip 100 is configured to receive the original data of the current frame of the original image signal, which is usually transmitted and input by an antenna or a set-top box; the previous frame of the original image signal is stored in the main control chip 100 Data, and transfer the difference between the original data of the previous frame and the original data of the current frame, and obtain the difference as the first difference ⁇ 1; then merge the original data of the current frame and the first difference ⁇ 1 Then, according to the low-voltage differential signal transmission protocol for encoding transmission.
  • the low voltage differential signal of the low voltage differential signal transmission protocol includes 4 pairs of differential signals corresponding to the original data of the current frame and 1 pair of differential signals corresponding to the first difference.
  • the color of the original data of the current frame may also be preliminarily processed.
  • step S200 the specific process of encoding the original data of the current frame and the first difference value ⁇ 1 according to the low voltage differential signal transmission protocol is combined as follows: First, the original data of the current frame is divided according to color including red primary color data , Green primary color data and blue primary color data, each primary color data has 8 bits, red primary color data includes AR0-AR7, green primary color data includes AG0-AG7, blue primary color data includes AB0-AB7; the first difference ⁇ 1 according to color The division includes red primary color data difference, green primary color data difference and blue primary color data difference; each primary color data difference has 3 bits.
  • the first pair of differential signals (0P, 0N) sequentially transmits AR0-AR5 of red primary color data and the AG0 of green primary color data;
  • the second pair of differential signals (1P, 1N) sequentially transmits AG0- of green primary color data AG5 and AB0-AB1 of the blue primary color data;
  • the third pair of differential signals (2P, 2N) sequentially transmit the AB2-AB5 of the blue primary color data and the enable signal DE, there are two between the enable signal DE and the AB5 of the blue primary color data A reserved data bit REV;
  • the fourth pair of differential signals (3P, 3N) sequentially transmit AR6-AR7 of red primary color data, AG6-AG7 of green primary color data, AB6-AB7 of blue primary color data, and one reserved Data bits REV;
  • the fifth pair of differential signals (4P, 4N) are all reserved data bits REV; then through the fifth pair of differential signals (4P, 4N) 7 reserved data bits REV, the fourth pair of differential signals (3P , 3N) 1 reserved
  • each primary color data difference can be expressed in binary, then each three bits can represent 8 kinds of data difference (0-7), which can be corresponding to the following coding form: 000 indicates that the primary color data difference is 0 , 001 indicates the difference of primary color data 1, 010 indicates the difference of primary color data 2, 011 indicates the difference of primary color data 3, 100 indicates the difference of primary color data 4, 101 indicates the difference of primary color data 5, 110 indicates the difference of primary color data A difference of 6, 111 means that the difference of the primary color data is 7; when the data difference is greater than 7, it also defaults to 7.
  • the red primary color data difference transmission bit corresponds to 010; when the green primary color data difference value is 4, the green primary color data difference transmission bit corresponds to 100; when the blue primary color data difference When the value is 1, the blue primary color data difference transmission bit corresponds to 001; the first differential value ⁇ 1 of each primary color data difference is referred to the aforementioned encoding rule, which is not described here one by one.
  • the original data of the current frame and the first difference ⁇ 1 are encoded according to the above protocol, and then transmitted to the timing control chip 200 for decoding according to the low voltage differential signal transmission protocol, and the separated original data of the current frame and the first difference are obtained.
  • the original data of the current frame is subjected to multi-level color processing and the first difference ⁇ 1 is subjected to standard conversion processing.
  • the multi-level color processing process can have many forms.
  • the multi-level color processing process includes color processing, digital gamma processing, and dithering processing that are performed sequentially as an example.
  • the multi-level color processing The process is not limited to the form exemplified in this embodiment.
  • the color processing is configured to improve the vividness of the transmitted image data; digital gamma processing uses digital methods to adjust the transmitted image data, edit the gamma curve of the image data to edit the nonlinear tone of the image, and detect the The dark part and the light part, and increase the ratio of the two to improve the image contrast effect; dithering processing is configured to debounce processing, display more gray levels, make the picture transition smoother; Among them, the original data of the current frame After the above three-level color processing process, the final processed data a of the current frame is obtained, and the last frame of the original data is subjected to the above three level color processing process to obtain the final last frame of processed data b.
  • the first difference ⁇ 1 standard conversion process is to first obtain the current grayscale range of the original data of the current frame; according to the current grayscale range, the query operation is performed according to the standard table shown in the following table to obtain the corresponding standard Difference ⁇ .
  • Standard deviation value ⁇ under gray level 10-50 51-130 131-190 191-255 First difference ⁇ 1 0 0 0 0 0 1 1 1 2 2 2 2 2 3 3 3 4 5 5 4 4 5 6 7 5 NA NA NA NA 6 NA NA NA NA 7 NA NA NA NA NA
  • NA in each standard deviation value ⁇ column means that the screen difference is too large, and no processing is required; in this embodiment, the preset value ⁇ 0 is set to 5, and the first difference value ⁇ 1 is greater than or equal to 5, then It is considered that the difference in picture changes is too large, and no processing is performed; that is to say, the current picture is a dynamic picture, and the data a processed after the last current frame is directly output is transmitted to the driving chip 300, and the driving chip 300 outputs the corresponding driving signal according to the data to Display panel.
  • step S520 is implemented according to the following steps:
  • Step S521 compare the difference between the processed data a of the current frame and the processed data b of the previous frame, and obtain a second difference ⁇ 2.
  • Step S522 Compare the standard difference value ⁇ with the second difference value ⁇ 2.
  • Step S5221 When the standard deviation ⁇ is greater than or equal to the second difference ⁇ 2, it is determined that the deviation range of the processed data a of the current frame is small, and the processed data a of the current frame is directly output.
  • Step S5222 when the standard deviation ⁇ is less than the second difference ⁇ 2, it is determined that the deviation range of the processed data a in the current frame is large, and the deviation correction is performed on the processed data b in the previous frame Data c.
  • step S522 the comparison result of the standard deviation ⁇ and the second difference ⁇ 2 is divided into the following two results:
  • the timing control chip 200 will The current frame processed data a obtained by processing the original data of the current frame in the color processing process is directly output to the driving chip 300, and the driving chip 300 outputs a corresponding driving signal to the display panel according to the data.
  • the timing control chip 200 needs to add the first difference ⁇ 1 (original data difference) of the processed data b of the previous frame as the corrected data c to the driving chip 300, and the driving chip 300 outputs according to the data The corresponding driving signal is sent to the display panel.
  • an embodiment of the present application provides a driving device for a display panel
  • the display panel is usually a liquid crystal display panel of an electronic device with a display function such as a television or a computer.
  • the driving device of the display panel is mainly composed of the main control chip 100 on the main board of the TV, the timing control chip 200 on the control board and the driving chip 300 connected in sequence, the main control chip 100 and the timing control chip Between 200 through low-voltage differential signal (Low-Voltage Differential Signaling (LVDS) transmission protocol communication connection.
  • LVDS Low-Voltage Differential Signaling
  • the input terminal of the main control chip 100 is configured to receive the original data of the current frame of the original image signal, which is usually transmitted and input by an antenna or a set-top box; the previous frame of the original image signal is stored in the main control chip 100 Data, and transfer the difference between the original data of the previous frame and the original data of the current frame, and obtain the difference as the first difference ⁇ 1; then merge the original data of the current frame and the first difference ⁇ 1 Then, according to the low-voltage differential signal transmission protocol for encoding transmission.
  • the low voltage differential signal of the low voltage differential signal transmission protocol includes 4 pairs of differential signals corresponding to the original data of the current frame and 1 pair of differential signals corresponding to the first difference.
  • the color of the original data of the current frame may also be preliminarily processed.
  • the specific process of encoding the original data of the current frame and the first difference ⁇ 1 according to the low voltage differential signal transmission protocol is as follows: First, the original data of the current frame is divided into red primary color data, green primary color data and Blue primary color data, each primary color data has 8 bits, red primary color data includes AR0-AR7, green primary color data includes AG0-AG7, blue primary color data includes AB0-AB7; the first difference ⁇ 1 includes red primary color data according to color division Difference, green primary color data difference and blue primary color data difference; each primary color data difference has 3 bits.
  • the first pair of differential signals (0P, 0N) sequentially transmits AR0-AR5 of red primary color data and the AG0 of green primary color data;
  • the second pair of differential signals (1P, 1N) sequentially transmits AG0- of green primary color data AG5 and AB0-AB1 of the blue primary color data;
  • the third pair of differential signals (2P, 2N) sequentially transmit the AB2-AB5 of the blue primary color data and the enable signal DE, there are two between the enable signal DE and the AB5 of the blue primary color data A reserved data bit REV;
  • the fourth pair of differential signals (3P, 3N) sequentially transmit AR6-AR7 of red primary color data, AG6-AG7 of green primary color data, AB6-AB7 of blue primary color data, and one reserved Data bits REV;
  • the fifth pair of differential signals (4P, 4N) are all reserved data bits REV; then through the fifth pair of differential signals (4P, 4N) 7 reserved data bits REV, the fourth pair of differential signals (3P , 3N) 1 reserved
  • each primary color data difference can be expressed in binary, then each three bits can represent 8 kinds of data difference (0-7), which can be corresponding to the following coding form: 000 indicates that the primary color data difference is 0 , 001 indicates the difference of primary color data 1, 010 indicates the difference of primary color data 2, 011 indicates the difference of primary color data 3, 100 indicates the difference of primary color data 4, 101 indicates the difference of primary color data 5, 110 indicates the difference of primary color data A difference of 6, 111 means that the difference of the primary color data is 7; when the data difference is greater than 7, it also defaults to 7.
  • the red primary color data difference transmission bit corresponds to 010; when the green primary color data difference value is 4, the green primary color data difference transmission bit corresponds to 100; when the blue primary color data difference When the value is 1, the blue primary color data difference transmission bit corresponds to 001; the first differential value ⁇ 1 of each primary color data difference is referred to the aforementioned encoding rule, which is not described here one by one.
  • the original data of the current frame and the first difference ⁇ 1 are encoded according to the above protocol, and then transmitted to the timing control chip 200 for decoding according to the low voltage differential signal transmission protocol, and the separated original data of the current frame and the first difference are obtained.
  • the original data of the current frame is subjected to multi-level color processing and the first difference ⁇ 1 is subjected to standard conversion processing.
  • the multi-level color processing process can have many forms.
  • the multi-level color processing process includes color processing, digital gamma processing, and dithering processing that are performed sequentially as an example.
  • the multi-level color processing process is not limited to The form exemplified in this embodiment.
  • the color processing is configured to improve the vividness of the transmitted image data; digital gamma processing uses digital methods to adjust the transmitted image data, edit the gamma curve of the image data to edit the nonlinear tone of the image, and detect the The dark part and the light part, and increase the ratio of the two to improve the image contrast effect; dithering processing is configured to debounce processing, display more gray levels, make the picture transition smoother; Among them, the original data of the current frame After the above-mentioned three-level color processing process, the final current frame processed data a is obtained, and the previous frame of original data is subjected to the above-mentioned three-level color processing process to get the final current frame processed data b.
  • the first difference ⁇ 1 standard conversion process is to first obtain the current grayscale range of the original data of the current frame; according to the current grayscale range, the query operation is performed according to the standard table shown in the following table to obtain the corresponding standard Difference ⁇ .
  • Standard deviation value ⁇ under gray level 10-50 51-130 131-190 191-255 First difference ⁇ 1 0 0 0 0 0 1 1 1 2 2 2 2 3 3 3 3 4 5 5 4 4 5 7 7 5 NA NA NA NA 6 NA NA NA 7 NA NA NA NA NA
  • NA in each standard deviation value ⁇ column means that the screen difference is too large, and no processing is required; in this embodiment, the preset value ⁇ 0 is set to 5, and the first difference value ⁇ 1 is greater than or equal to 5, then It is considered that the difference in picture changes is too large, and no processing is performed; that is to say, the current picture is a dynamic picture, and the data a processed after the last current frame is directly output is transmitted to the driving chip 300, and the driving chip 300 outputs the corresponding driving signal according to the data to Display panel.
  • the current picture is considered as a static picture, and then the output data is determined according to the following conditions according to the deviation range of the processed data of the current frame:
  • the difference between the processed data a in the current frame and the processed data b in the previous frame is compared to obtain a second difference ⁇ 2.
  • the deviation of the processed data a of the current frame is determined When the range is small, the processed data a of the current frame is directly output; when the standard deviation ⁇ is less than the second difference ⁇ 2, the deviation range of the processed data a of the current frame is determined to be large, and the output
  • the data b processed in the previous frame is the data c corrected for the deviation.
  • the timing control chip 200 will The current frame processed data a obtained by processing the original data of the current frame in the color processing process is directly output to the driving chip 300, and the driving chip 300 outputs a corresponding driving signal to the display panel according to the data.
  • the timing control chip 200 needs to add the first difference ⁇ 1 (original data difference) of the processed data b of the previous frame as the corrected data c to the driving chip 300, and the driving chip 300 outputs according to the data The corresponding driving signal is sent to the display panel.
  • the processing effect of the data received by the display panel can be ensured, and at the same time, the flickering problem of the display panel is also solved.
  • an embodiment of the present application further provides a display device, which includes a display panel and the above-described display panel driving device.
  • a display device which includes a display panel and the above-described display panel driving device.
  • the structure, working principle and beneficial effects of the driving device of the display panel refer to the foregoing embodiments, and will not be repeated here.

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Abstract

一种显示面板驱动方法及其装置、以及显示装置，通过比对当前帧原始数据与上一帧原始数据得出第一差值，将第一差值经标准换算后得到标准差值；并通过比对经颜色处理后得到的当前帧处理后的数据与上一帧处理后的数据得出第二差值，比较标准差值与第二差值的大小，并根据比较结果输出相应的数据，驱动芯片输出的数据驱动显示面板。

Description

显示面板的驱动方法及驱动装置、显示装置
相关专利
本申请要求2018年12月12日，申请号为201811519105.2，申请名称为“显示面板的驱动方法及驱动装置、显示装置”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及显示技术领域，特别涉及一种显示面板的驱动方法及驱动装置、显示装置。
背景技术
目前，电视机的显示架构通常包括主板上的SOC（single on chip，片上系统芯片）芯片和控制板上的T-CON（Timming Controller，时序控制器）芯片，显示架构的图像输入信号通常由天线或机顶盒输入，经SOC芯片处理后，再将信号传递给控制板上的T-CON芯片进行再次处理，最后再通过数据驱动芯片去驱动液晶面板；SOC 芯片与T-CON芯片之间通常通过低电压差分信号（Low-Voltage Differential Signaling，简称LVDS）传输协议通信连接，SOC芯片将传输的图像信号按照协议编码后传输至T-CON芯片进行一系列颜色处理，最后，传输至驱动单元驱动液晶显示面板。在这个过程中，图像输入信号经过SOC芯片和T-CON芯片处理后，信号被改动的较大；尤其针对静态画面显示，同一个显示位置的前后两次显示数据会变得完全不一样，并且颜色处理步骤越多，差异越大，容易出现画面闪烁的问题。
申请内容
本申请实施例通过提供一种显示面板的驱动方法及驱动装置，以及显示装置，解决了现有技术中液晶显示面板容易出现画面闪烁的问题。
本申请实施例提供了一种显示面板的驱动方法，该驱动方法包括以下步骤：
接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值；
对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据；同时，将第一差值进行标准换算转换为标准差值；
判断所述标准差值是否大于或等于预设值，若是，则输出当前帧处理后的数据；若否，则根据当前帧处理后的数据的偏差范围，确定输出的数据；
根据输出的数据驱动显示面板。
可选地，所述根据当前帧处理后的数据的偏差范围，确定输出的数据的步骤具体包括：
比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；以及
比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，输出对上一帧处理后的数据进行偏差校正的数据。
可选地，所述输出对上一帧处理后的数据进行偏差校正的数据的步骤具体为：
将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出。
可选地，所述对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据的步骤具体包括：
色彩处理，当前帧原始数据经色彩处理后得到第一级当前帧处理后的数据；
数字伽马处理，当前帧原始数据经数字伽马处理后得到第二级当前帧处理后的数据；
以及抖动处理，当前帧原始数据经抖动处理后得到第三级当前帧处理后的数据。
可选地，所述当前帧原始数据经上述色彩处理、数字伽马处理及抖动处理三级颜色处理过程后得到最终的当前帧处理后的数据；
所述上一帧原始数据经上述三级颜色处理过程后得到最终的当前帧处理后的数据b。
可选地，所述数字伽马处理的步骤具体包括：
采用数字方式调整传输的图像数据，对图像数据的伽玛曲线进行编辑，以对图像进行非线性色调编辑；
检出图像信号中的深色部分和浅色部分，并使两者比例增大。
可选地，所述将第一差值进行标准换算转换为标准差值的步骤具体为：
获取当前帧原始数据的当前灰阶范围；
根据所述当前灰阶范围、第一差值查询标准表得出所述第一差值对应的标准差值。
可选地，所述接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值的步骤之后还包括：
将所述当前帧原始数据、第一差值合并后按照预设协议编码传输后再解码分离。
可选地，所述将所述当前帧原始数据、第一差值合并后按照预设传输协议编码传输后再解码分离的步骤具体包括：先将当前帧原始数据按照颜色划分包括红基色数据、绿基色数据和蓝基色数据，每一种所述基色数据均具有8位，红基色数据包括AR0-AR7，绿基色数据包括AG0-AG7，蓝基色数据包括AB0-AB7；第一差值Δ1按照颜色划分包括红基色数据差值、绿基色数据差值和蓝基色数据差值；每一种所述基色数据差值均具有3位。
可选地，所述预设协议为低电压差分信号传输协议，所述低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
本申请实施例还提供了一种显示面板的驱动装置，该驱动装置包括：
主控芯片，配置为接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值；将所述当前帧原始数据、第一差值合并后按照预设协议编码传输；
时序控制芯片，与所述主控芯片通过预设协议通信连接，配置为接收传输的编码并解码分离出当前帧原始数据、第一差值；对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据；将第一差值进行标准换算过程转换为标准差值；判断所述标准差值是否大于或等于预设值，若是，则输出当前帧处理后的数据；若否，则比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出；
驱动芯片，与所述时序控制芯片的输出端连接，配置为根据所述时序控制芯片输出的数据驱动显示面板。
可选地，所述标准换算过程包括获取当前帧原始数据的当前灰阶范围，根据所述当前灰阶范围、第一差值查询标准表得出所述第一差值对应的标准差值。
可选地，所述预设协议为低电压差分信号传输协议，所述低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
本申请实施例还提供了一种显示装置，该显示装置包括显示面板和上述显示面板的驱动装置；所述的显示面板的驱动装置包括：
主控芯片，配置为接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值；将所述当前帧原始数据、第一差值合并后按照预设协议编码传输；
时序控制芯片，与所述主控芯片通过预设协议通信连接，配置为接收传输的编码并解码分离出当前帧原始数据、第一差值；对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据；将第一差值进行标准换算过程转换为标准差值；判断所述标准差值是否大于或等于预设值，若是，则输出当前帧处理后的数据；若否，则比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出；以及，
驱动芯片，与所述时序控制芯片的输出端连接，配置为根据所述时序控制芯片输出的数据驱动显示面板。
可选地，所述标准换算过程包括获取当前帧原始数据的当前灰阶范围，根据所述当前灰阶范围、第一差值查询标准表得出所述第一差值对应的标准差值。
可选地，所述预设协议为低电压差分信号传输协议，所述低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
可选地，所述时序控制器在配置为根据当前帧处理后的数据的偏差范围，确定输出的数据时具体为：
比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；以及
比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，输出对上一帧处理后的数据进行偏差校正的数据。
可选地，所述时序控制器在配置为对上一帧处理后的数据进行偏差校正的数据时具体为：
将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出。
本申请实施例中提供的一个或多个技术方案，至少具有如下技术效果或优点：
通过主控芯片比对当前帧原始数据与上一帧原始数据得出第一差值，并将第一差值、当前帧原始数据传输至时序控制芯片，时序控制芯片将第一差值经标准换算后得到标准差值；并通过比对经颜色处理后得到的当前帧处理后的数据与上一帧处理后的数据得出第二差值，比较标准差值与第二差值的大小，并根据比较结果输出相应的数据，驱动芯片根据时序控制芯片输出的数据输出对应的驱动信号给显示面板；通过上述方案，当传输的图像为静态画面时，可以保证显示面板所接收到的数据的处理效果，并且解决了显示面板的闪烁问题。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请显示面板的驱动方法的一实施例的步骤示意图；
图2为本申请显示面板的驱动装置一实施例的方框示意图；
图3为本申请显示面板的驱动装置的低电压差分信号传输协议编码示意图。
[根据细则91更正 22.01.2019]　
图4为本申请显示面板的驱动方法的另一实施例的步骤示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
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的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通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。
需要说明，若本申请实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅配置为解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若在本申请中涉及“第一”、“第二”等的描述仅配置为描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
参照图1，本申请实施例提供了一种显示面板的驱动方法，
在一实施例中，该驱动方法包括以下步骤：
步骤S100：接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值Δ1。
步骤S200：将所述当前帧原始数据、第一差值Δ1合并后按照预设协议编码传输后再解码分离。
步骤S300：对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据；同时，将第一差值Δ1进行标准换算转换为标准差值Δ。
步骤S400：判断所述标准差值Δ是否大于或等于预设值Δ0；
步骤S510：若是，则输出当前帧处理后的数据；
步骤S520：若否，则根据当前帧处理后的数据的偏差范围，确定输出的数据。
步骤S600：根据输出的数据驱动显示面板。
在本实施例中，参照图2，该显示面板通常为电视机或计算机等具有显示功能的电子设备的液晶显示面板，该驱动方法是基于液晶显示面板的驱动装置形成的。以电视机为例，该显示面板的驱动装置主要由电视机的主板上的主控芯片100、控制板上的时序控制芯片200以及驱动芯片300顺次连接构成，主控芯片100与时序控制芯片200之间通过低电压差分信号（Low-Voltage Differential Signaling，简称LVDS）传输协议通信连接。
可选地，主控芯片100的输入端配置为接收原始图像信号的当前帧原始数据，该原始图像信号通常由天线或机顶盒传输输入；主控芯片100内存储了原始图像信号的上一帧原始数据，并将该上一帧原始数据传输与当前帧原始数据之间的差异，并将该差异值获取作为第一差值Δ1；然后将该将该当前帧原始数据和第一差值Δ1合并后按照低电压差分信号传输协议进行编码传输。
其中，该低电压差分信号传输协议的低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
可选地，在将当前帧原始数据和第一差值Δ1合并编码传输之前，也可对当前帧原始数据的色彩进行初步处理。
参照图3，在步骤S200中，将所述当前帧原始数据、第一差值Δ1合并后按照低电压差分信号传输协议编码的具体过程如下：先将当前帧原始数据按照颜色划分包括红基色数据、绿基色数据和蓝基色数据，每一种基色数据均具有8位，红基色数据包括AR0-AR7，绿基色数据包括AG0-AG7，蓝基色数据包括AB0-AB7；第一差值Δ1按照颜色划分包括红基色数据差值、绿基色数据差值和蓝基色数据差值；每一种基色数据差值均具有3位。
在本实施例中，第一对差分信号（0P、0N）依次传输红基色数据的AR0-AR5和绿基色数据的AG0；第二对差分信号（1P、1N）依次传输绿基色数据的AG0-AG5和蓝基色数据的AB0-AB1；第三对差分信号（2P、2N）依次传输蓝基色数据的AB2-AB5和使能信号DE，在使能信号DE和蓝基色数据的AB5之间具有两个预留数据位REV；第四对差分信号（3P、3N）依次传输红基色数据的AR6-AR7、绿基色数据的AG6-AG7、蓝基色数据的AB6-AB7，另外还剩下一个预留数据位REV；第五对差分信号（4P、4N）全部为预留数据位REV；则通过第五对差分信号（4P、4N）的7个预留数据位REV、第四对差分信号（3P、3N）的1个预留数据位REV以及第三对差分信号（2P、2N）的1个预留数据位REV共同传输红基色数据差值、绿基色数据差值和蓝基色数据差值。
进一步地，每种基色数据差值均可采用二进制进行表示，则每三个位均可表示8种数据差值（0-7），可按照以下编码形式对应：000表示基色数据差值为0、001表示基色数据差值为1、010表示基色数据差值为2、011表示基色数据差值为3、100表示基色数据差值为4、101表示基色数据差值为5、110表示基色数据差值为6、111表示基色数据差值为7；当数据差大于7时，也默认为7。例如，当红基色数据差值为2时，则红基色数据差值传输位相应为010；当绿基色数据差值为4时，则绿基色数据差值传输位相应为100；当蓝基色数据差值为1时，则蓝基色数据差值传输位相应为001；第一差值Δ1各基色数据差值参照前述编码规则进行，在此不一一例举。
将当前帧原始数据和第一差值Δ1根据上述协议编码后，进行传输，传输至时序控制芯片200依旧按照低电压差分信号传输协议进行解码，又得到分离的当前帧原始数据和第一差值Δ1，分别将当前帧原始数据进行多级颜色处理和将第一差值Δ1进行标准换算处理。
多级颜色处理过程可以有很多中形式，在本实施例中，以多级颜色处理过程包括依次进行的色彩处理、数字伽马（gamma）处理以及抖动处理为例进行说明，其多级颜色处理过程并不仅限于本实施例所例举的形式。色彩处理配置为提高传输的图像数据色彩鲜艳度；数字gamma处理采用数字方式调整传输的图像数据，对图像数据的伽玛曲线进行编辑，以对图像进行非线性色调编辑，检出图像信号中的深色部分和浅色部分，并使两者比例增大，从而提高图像对比度效果；抖动处理配置为去抖动处理，显示更多的灰阶数，使画面过渡更加平滑；其中，当前帧原始数据经上述三级颜色处理过程后得到最终的当前帧处理后的数据a，上一帧原始数据经上述三级颜色处理过程后得到最终的上一帧处理后的数据b。
在本实施例中，第一差值Δ1标准换算过程为先获取当前帧原始数据的当前灰阶范围；在根据当前灰阶范围按照如下表所示的标准表进行查询运算，得出对应的标准差值Δ。
所属灰阶下标准差值Δ 10-50 51-130 131-190 191-255
第一差值Δ1
0 0 0 0 0
1 1 1 2 2
2 2 2 3 3
3 3 4 5 5
4 4 5 6 7
5 NA NA NA NA
6 NA NA NA NA
7 NA NA NA NA
该标准表中，各标准差值Δ列中NA代表画面差异太大，不做处理；在本实施例中，设定预设值Δ0为5，第一差值Δ1大于或等于5以后，就认为画面变化差异太大，不做处理；也就是说当前画面为动态画面，将直接输出最后的当前帧处理后的数据a传输至驱动芯片300，驱动芯片300根据该数据输出对应的驱动信号至显示面板。
参照图4，若第一差值Δ1小于5时，则认定当前画面为静态画面，则步骤S520按照以下步骤实施：
步骤S521：比对所述当前帧处理后的数据a与上一帧处理后的数据b之间的差异，获取第二差值Δ2。
步骤S522：比较所述标准差值Δ和所述第二差值Δ2的大小。
步骤S5221：当所述标准差值Δ大于或等于所述第二差值Δ2时，则认定所述当前帧处理后的数据a的偏差范围小，直接输出所述当前帧处理后的数据a.
步骤S5222：当所述标准差值Δ小于所述第二差值Δ2时，则认定所述当前帧处理后的数据a的偏差范围大，输出对上一帧处理后的数据b进行偏差校正的数据c。
在步骤S522中，所述标准差值Δ和所述第二差值Δ2的比较结果分为以下两种结果：
1、当所述当前帧处理后的数据a的偏差范围小时，即各级颜色处理过程对当前帧原始数据处理的过程中所产生的偏差是在允许范围内，则时序控制芯片200将各级颜色处理过程处理当前帧原始数据得到的当前帧处理后的数据a直接输出至驱动芯片300，该驱动芯片300根据该数据输出对应的驱动信号至显示面板。
2、当所述当前帧处理后的数据a的偏差范围大时，对上一帧处理后的数据b进行偏差校正的具体过程如下：
将上一帧处理后的数据b加上或减去所述第一差值Δ1后作为校正后的数据c输出。
当所述当前帧处理后的数据a的偏差范围大时，则认为各级颜色处理过程对当前帧原始数据处理的过程中所产生的偏差过大，超出了允许的范围；则不能直接将当前帧处理后的数据a作为时序控制芯片200的输出，否则就容易产生画面闪烁的问题。此时，时序控制芯片200则需将上一帧处理后的数据b加上第一差值Δ1（原始数据差）作为校正后的数据c输出至驱动芯片300，该驱动芯片300根据该数据输出对应的驱动信号至显示面板。
通过上述驱动方法，当传输的图像为静态画面时，可以保证显示面板所接收到的数据的处理效果，同时也解决了显示面板的闪烁问题。
参照图2，本申请实施例提供了一种显示面板的驱动装置，
在一实施例中，该显示面板通常为电视机或计算机等具有显示功能的电子设备的液晶显示面板。以电视机为例，该显示面板的驱动装置主要由电视机的主板上的主控芯片100、控制板上的时序控制芯片200以及驱动芯片300顺次连接构成，主控芯片100与时序控制芯片200之间通过低电压差分信号（Low-Voltage Differential Signaling，简称LVDS）传输协议通信连接。
可选地，主控芯片100的输入端配置为接收原始图像信号的当前帧原始数据，该原始图像信号通常由天线或机顶盒传输输入；主控芯片100内存储了原始图像信号的上一帧原始数据，并将该上一帧原始数据传输与当前帧原始数据之间的差异，并将该差异值获取作为第一差值Δ1；然后将该将该当前帧原始数据和第一差值Δ1合并后按照低电压差分信号传输协议进行编码传输。
其中，该低电压差分信号传输协议的低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
可选地，在将当前帧原始数据和第一差值Δ1合并编码传输之前，也可对当前帧原始数据的色彩进行初步处理。
参照图3，将所述当前帧原始数据、第一差值Δ1合并后按照低电压差分信号传输协议编码的具体过程如下：先将当前帧原始数据按照颜色划分包括红基色数据、绿基色数据和蓝基色数据，每一种基色数据均具有8位，红基色数据包括AR0-AR7，绿基色数据包括AG0-AG7，蓝基色数据包括AB0-AB7；第一差值Δ1按照颜色划分包括红基色数据差值、绿基色数据差值和蓝基色数据差值；每一种基色数据差值均具有3位。
在本实施例中，第一对差分信号（0P、0N）依次传输红基色数据的AR0-AR5和绿基色数据的AG0；第二对差分信号（1P、1N）依次传输绿基色数据的AG0-AG5和蓝基色数据的AB0-AB1；第三对差分信号（2P、2N）依次传输蓝基色数据的AB2-AB5和使能信号DE，在使能信号DE和蓝基色数据的AB5之间具有两个预留数据位REV；第四对差分信号（3P、3N）依次传输红基色数据的AR6-AR7、绿基色数据的AG6-AG7、蓝基色数据的AB6-AB7，另外还剩下一个预留数据位REV；第五对差分信号（4P、4N）全部为预留数据位REV；则通过第五对差分信号（4P、4N）的7个预留数据位REV、第四对差分信号（3P、3N）的1个预留数据位REV以及第三对差分信号（2P、2N）的1个预留数据位REV共同传输红基色数据差值、绿基色数据差值和蓝基色数据差值。
进一步地，每种基色数据差值均可采用二进制进行表示，则每三个位均可表示8种数据差值（0-7），可按照以下编码形式对应：000表示基色数据差值为0、001表示基色数据差值为1、010表示基色数据差值为2、011表示基色数据差值为3、100表示基色数据差值为4、101表示基色数据差值为5、110表示基色数据差值为6、111表示基色数据差值为7；当数据差大于7时，也默认为7。例如，当红基色数据差值为2时，则红基色数据差值传输位相应为010；当绿基色数据差值为4时，则绿基色数据差值传输位相应为100；当蓝基色数据差值为1时，则蓝基色数据差值传输位相应为001；第一差值Δ1各基色数据差值参照前述编码规则进行，在此不一一例举。
将当前帧原始数据和第一差值Δ1根据上述协议编码后，进行传输，传输至时序控制芯片200依旧按照低电压差分信号传输协议进行解码，又得到分离的当前帧原始数据和第一差值Δ1，分别将当前帧原始数据进行多级颜色处理和将第一差值Δ1进行标准换算处理。
多级颜色处理过程可以有很多中形式，在本实施例中，以多级颜色处理过程包括依次进行的色彩处理、数字gamma处理以及抖动处理为例进行说明，其多级颜色处理过程并不仅限于本实施例所例举的形式。色彩处理配置为提高传输的图像数据色彩鲜艳度；数字gamma处理采用数字方式调整传输的图像数据，对图像数据的伽玛曲线进行编辑，以对图像进行非线性色调编辑，检出图像信号中的深色部分和浅色部分，并使两者比例增大，从而提高图像对比度效果；抖动处理配置为去抖动处理，显示更多的灰阶数，使画面过渡更加平滑；其中，当前帧原始数据经上述三级颜色处理过程后得到最终的当前帧处理后的数据a，上一帧原始数据经上述三级颜色处理过程后得到最终的当前帧处理后的数据b。
在本实施例中，第一差值Δ1标准换算过程为先获取当前帧原始数据的当前灰阶范围；在根据当前灰阶范围按照如下表所示的标准表进行查询运算，得出对应的标准差值Δ。
所属灰阶下标准差值Δ 10-50 51-130 131-190 191-255
第一差值Δ1
0 0 0 0 0
1 1 1 2 2
2 2 2 3 3
3 3 4 5 5
4 4 5 7 7
5 NA NA NA NA
6 NA NA NA NA
7 NA NA NA NA
该标准表中，各标准差值Δ列中NA代表画面差异太大，不做处理；在本实施例中，设定预设值Δ0为5，第一差值Δ1大于或等于5以后，就认为画面变化差异太大，不做处理；也就是说当前画面为动态画面，将直接输出最后的当前帧处理后的数据a传输至驱动芯片300，驱动芯片300根据该数据输出对应的驱动信号至显示面板。
若第一差值Δ1小于5时，则认定当前画面为静态画面，则根据当前帧处理后的数据的偏差范围，确定输出的数据按照以下情况实施：
比对所述当前帧处理后的数据a与上一帧处理后的数据b之间的差异，获取第二差值Δ2。
比较所述标准差值Δ和所述第二差值Δ2的大小，当所述标准差值Δ大于或等于所述第二差值Δ2时，则认定所述当前帧处理后的数据a的偏差范围小，直接输出所述当前帧处理后的数据a；当所述标准差值Δ小于所述第二差值Δ2时，则认定所述当前帧处理后的数据a的偏差范围大，输出对上一帧处理后的数据b进行偏差校正的数据c。
所述标准差值Δ和所述第二差值Δ2的比较结果分为以下两种结果：
1、当所述当前帧处理后的数据a的偏差范围小时，即各级颜色处理过程对当前帧原始数据处理的过程中所产生的偏差是在允许范围内，则时序控制芯片200将各级颜色处理过程处理当前帧原始数据得到的当前帧处理后的数据a直接输出至驱动芯片300，该驱动芯片300根据该数据输出对应的驱动信号至显示面板。
2、当所述当前帧处理后的数据a的偏差范围大时，对上一帧处理后的数据b进行偏差校正的具体过程如下：
将上一帧处理后的数据b加上或减去所述第一差值Δ1后作为校正后的数据c输出。
当所述当前帧处理后的数据a的偏差范围大时，则认为各级颜色处理过程对当前帧原始数据处理的过程中所产生的偏差过大，超出了允许的范围；则不能直接将当前帧处理后的数据a作为时序控制芯片200的输出，否则就容易产生画面闪烁的问题。此时，时序控制芯片200则需将上一帧处理后的数据b加上第一差值Δ1（原始数据差）作为校正后的数据c输出至驱动芯片300，该驱动芯片300根据该数据输出对应的驱动信号至显示面板。
通过上述驱动装置，当传输的图像为静态画面时，可以保证显示面板所接收到的数据的处理效果，同时也解决了显示面板的闪烁问题。
在一实施例，同样地，基于同一申请构思，本申请实施例还提供了一种显示装置，该显示装置包括显示面板和上述的显示面板的驱动装置。该显示面板的驱动装置的结构、工作原理以及所带来的有益效果，均参照前述实施例，在此不再赘述。
以上所述仅为本申请的可选地实施例，并非因此限制本申请的专利范围，凡是在本申请的申请构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (18)

  1. 一种显示面板的驱动方法，其中，包括以下步骤：
    接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值；
    对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据；同时，将第一差值进行标准换算转换为标准差值；
    判断所述标准差值是否大于或等于预设值，若是，则输出当前帧处理后的数据；若否，则根据当前帧处理后的数据的偏差范围，确定输出的数据；
    以及根据输出的数据驱动显示面板。
  2. 如权利要求1所述的显示面板的驱动方法，其中，所述根据当前帧处理后的数据的偏差范围，确定输出的数据的步骤具体包括：
    比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；以及
    比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，输出对上一帧处理后的数据进行偏差校正的数据。
  3. 如权利要求2所述的显示面板的驱动方法，其中，所述输出对上一帧处理后的数据进行偏差校正的数据的步骤具体为：
    将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出。
  4. 如权利要求2所述的显示面板的驱动方法，其中，所述对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据的步骤具体包括：
    色彩处理，当前帧原始数据经色彩处理后得到第一级当前帧处理后的数据；
    数字伽马处理，当前帧原始数据经数字伽马处理后得到第二级当前帧处理后的数据；
    以及抖动处理，当前帧原始数据经抖动处理后得到第三级当前帧处理后的数据。
  5. 如权利要求4所述的显示面板的驱动方法，其中，所述当前帧原始数据经上述色彩处理、数字伽马处理及抖动处理三级颜色处理过程后得到最终的当前帧处理后的数据；
    所述上一帧原始数据经上述三级颜色处理过程后得到最终的上一帧处理后的数据。
  6. 如权利要求4所述的显示面板的驱动方法，其中，所述数字伽马处理的步骤具体包括：
    采用数字方式调整传输的图像数据，对图像数据的伽玛曲线进行编辑，以对图像进行非线性色调编辑；
    检出图像信号中的深色部分和浅色部分，并使两者比例增大。
  7. 如权利要求1所述的显示面板的驱动方法，其中，所述将第一差值进行标准换算转换为标准差值的步骤具体为：
    获取当前帧原始数据的当前灰阶范围；
    根据所述当前灰阶范围、第一差值查询标准表得出所述第一差值对应的标准差值。
  8. 如权利要求1所述的显示面板的驱动方法，其中，所述接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值的步骤之后还包括：
    将所述当前帧原始数据、第一差值合并后按照预设协议编码传输后再解码分离。
  9. 如权利要求8所述的显示面板的驱动方法，其中，所述将所述当前帧原始数据、第一差值合并后按照预设传输协议编码传输后再解码分离的步骤具体包括：先将当前帧原始数据按照颜色划分包括红基色数据、绿基色数据和蓝基色数据，每一种所述基色数据均具有8位，红基色数据包括AR0-AR7，绿基色数据包括AG0-AG7，蓝基色数据包括AB0-AB7；第一差值Δ1按照颜色划分包括红基色数据差值、绿基色数据差值和蓝基色数据差值；每一种所述基色数据差值均具有3位。
  10. 如权利要求8所述的显示面板的驱动方法，其中，所述预设协议为低电压差分信号传输协议，所述低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
  11. 一种显示面板的驱动装置，其中，包括:
    主控芯片，配置为接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值；将所述当前帧原始数据、第一差值合并后按照预设协议编码传输；
    时序控制芯片，与所述主控芯片通过预设协议通信连接，配置为接收传输的编码并解码分离出当前帧原始数据、第一差值；对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据；将第一差值进行标准换算过程转换为标准差值；判断所述标准差值是否大于或等于预设值，若是，则输出当前帧处理后的数据；若否，则比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出；
    以及驱动芯片，与所述时序控制芯片的输出端连接，配置为根据所述时序控制芯片输出的数据驱动显示面板。
  12. 如权利要求11所述的显示面板的驱动装置，其中，所述标准换算过程包括获取当前帧原始数据的当前灰阶范围，根据所述当前灰阶范围、第一差值查询标准表得出所述第一差值对应的标准差值。
  13. 如权利要求11所述的显示面板的驱动装置，其中，所述预设协议为低电压差分信号传输协议，所述低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
  14. 一种显示装置，其中，所述显示装置包括显示面板和权利要求11中所述的显示面板的驱动装置；所述的显示面板的驱动装置包括：
    主控芯片，配置为接收原始图像信号，并比对所述原始图像信号的当前帧原始数据与上一帧原始数据之间的差异，获取第一差值；将所述当前帧原始数据、第一差值合并后按照预设协议编码传输；
    时序控制芯片，与所述主控芯片通过预设协议通信连接，配置为接收传输的编码并解码分离出当前帧原始数据、第一差值；对当前帧原始数据进行多级颜色处理，得到当前帧处理后的数据；将第一差值进行标准换算过程转换为标准差值；判断所述标准差值是否大于或等于预设值，若是，则输出当前帧处理后的数据；若否，则比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出；以及，
    驱动芯片，与所述时序控制芯片的输出端连接，配置为根据所述时序控制芯片输出的数据驱动显示面板。
  15. 如权利要求14所述的显示装置，其中，所述标准换算过程包括获取当前帧原始数据的当前灰阶范围，根据所述当前灰阶范围、第一差值查询标准表得出所述第一差值对应的标准差值。
  16. 如权利要求14所述的显示装置，其中，所述预设协议为低电压差分信号传输协议，所述低电压差分信号包括对应当前帧原始数据的4对差分信号以及对应第一差值的1对差分信号。
  17. 如权利要求14所述的显示装置，其中，所述时序控制器在配置为根据当前帧处理后的数据的偏差范围，确定输出的数据时具体为：
    比对所述当前帧处理后的数据与上一帧处理后的数据之间的差异，获取第二差值；以及
    比较所述标准差值和所述第二差值的大小，当所述标准差值大于或等于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围小，直接输出所述当前帧处理后的数据；当所述标准差值小于所述第二差值时，则认定所述当前帧处理后的数据的偏差范围大，输出对上一帧处理后的数据进行偏差校正的数据。
  18. 如权利要求14所述的显示装置，其中，所述时序控制器在配置为对上一帧处理后的数据进行偏差校正的数据时具体为：
    将上一帧处理后的数据加上或减去所述第一差值后作为校正后的数据输出。
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