WO2018205369A1 - 液晶显示面板及其驱动方法、液晶显示器 - Google Patents

液晶显示面板及其驱动方法、液晶显示器 Download PDF

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Publication number
WO2018205369A1
WO2018205369A1 PCT/CN2017/090502 CN2017090502W WO2018205369A1 WO 2018205369 A1 WO2018205369 A1 WO 2018205369A1 CN 2017090502 W CN2017090502 W CN 2017090502W WO 2018205369 A1 WO2018205369 A1 WO 2018205369A1
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Prior art keywords
backlight
liquid crystal
crystal display
display panel
image
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PCT/CN2017/090502
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English (en)
French (fr)
Inventor
查国伟
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武汉华星光电技术有限公司
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Priority to US15/545,692 priority Critical patent/US10460680B2/en
Publication of WO2018205369A1 publication Critical patent/WO2018205369A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • 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
    • 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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • 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
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a liquid crystal display panel, a driving method thereof, and a liquid crystal display.
  • liquid crystal display panels have been involved in all aspects of user life, such as PCs, smart phones and tablets.
  • the liquid crystal display does not have the self-luminous characteristics of the OLED, it is necessary to use a backlight when performing display.
  • the backlight technology of the liquid crystal display mainly includes a direct-in type and a side-in type, and a side-in type backlight.
  • the module needs to use a light guide plate, and the direct type is mainly realized by bright and dark LEDs of different partitions. No matter which way of entering the light, the backlight is provided in the form of a dynamic partition backlight.
  • the existing dynamic partition backlight mainly performs separate light source control according to the brightness required by different partitions.
  • optical crosstalk exists between adjacent partitions, which seriously affects the screen display. Quality, affecting the user experience.
  • the technical problem to be solved by the present invention is to provide a liquid crystal display panel, a driving method thereof, and a liquid crystal display, which can enable a liquid crystal display panel to display high-quality screen information even in the presence of optical crosstalk.
  • the first technical solution adopted by the present invention is to provide a driving method of a liquid crystal display panel, and the driving method includes the following steps:
  • the liquid crystal display panel is driven by the driving current to display the output image in accordance with the feature data.
  • the second technical solution adopted by the present invention is to provide a liquid crystal display panel including a data input circuit, a data processing circuit, a driving circuit, and a display circuit, wherein the input circuit
  • the driving circuit and the display circuit are respectively electrically connected to the data processing circuit, and the display circuit is further connected to the driving circuit.
  • the data input circuit is configured to normalize the image to be displayed of each backlight partition corresponding to the liquid crystal display panel to obtain feature data of the input image;
  • the data processing circuit is configured to perform boundary expansion on the backlights of the respective backlight partitions according to a preset condition, and determine, by using the data information after the boundary expansion, a backlight opening coefficient of each of the backlight partitions; and turning on the backlight of each backlight partition And performing a fusion process to obtain a driving current of the liquid crystal display panel; and acquiring feature data of an output image of each backlight partition of the liquid crystal display panel according to the feature data and the driving current;
  • the driving circuit is configured to drive the display circuit to display the output image according to the feature data by the driving current.
  • the third technical solution adopted by the present invention is to provide a liquid crystal display comprising the liquid crystal display panel of any of the above embodiments.
  • the invention has the beneficial effects that, when the liquid crystal display panel of the present embodiment is driven, the image to be displayed corresponding to each backlight partition of the liquid crystal display panel is normalized to obtain an input image.
  • Characteristic data performing backlight boundary expansion on each backlight partition according to a preset condition, determining a backlight opening coefficient of each backlight partition by using data information after the backlight boundary is expanded; and performing fusion processing on the backlight opening coefficients of the respective backlight partitions a driving current of the liquid crystal display panel; acquiring feature data of an output image of each backlight partition of the liquid crystal display panel according to the feature data and the driving current; and finally driving the liquid crystal display panel according to the characteristic data by driving current The output image.
  • the backlight brightness display requirement of the input image is obtained, and then the optical brightness crosstalk of the adjacent partition of any backlight partition to the backlight partition is included in the image.
  • the backlight calculation of the backlight partition not only the problem of inaccurate control of the partition brightness due to the luminance crosstalk affected by the light diffusion is solved, but the contrast of the display screen is further improved, and the picture quality is improved.
  • the crosstalk light is fully utilized, which further saves power consumption of the liquid crystal display panel.
  • FIG. 1 is a schematic flow chart of an embodiment of a driving method of a liquid crystal display panel of the present invention
  • FIG. 2 is a schematic diagram showing an expansion of a backlight opening factor according to a specific embodiment of a driving method of the liquid crystal display panel of FIG. 1;
  • FIG. 3 is a schematic diagram showing a minimum expansion coefficient distribution of a specific embodiment of a driving method of a liquid crystal display panel of the present invention
  • FIG. 4 is a schematic structural diagram of another embodiment of an ISIM-based intelligent terminal according to the present invention.
  • FIG. 1 is a schematic flow chart of an embodiment of a driving method of a liquid crystal display panel according to the present invention.
  • the driving method of this embodiment includes the following steps:
  • the liquid crystal display panel of the present embodiment counts the light diffusion crosstalk caused by the adjacent backlight partitions of the respective backlight partitions of the liquid crystal display panel into the actual backlight control information of the backlight partition. Improve the display quality of the liquid crystal display panel.
  • the backlight brightness requirement of the image to be displayed is determined.
  • the liquid crystal display panel first acquires an image to be displayed, and performs normalization processing on the image to be displayed in each backlight partition to acquire feature data indata (height, width, n) of the image to be displayed.
  • the feature data is a transmittance of the liquid crystal display panel.
  • the liquid crystal display panel is according to formula (1) To get the feature data.
  • gray is a gray matrix formed by each backlight partition corresponding to the input image
  • height is the height resolution of the image
  • width is the width resolution of the image
  • bit is the bit of the input image.
  • the number of digits of the input image is 8 bits. In other embodiments, other digits, such as 10 bits, may be used, and are not limited herein.
  • n is the number of gray scale colors, and the number of the gray scale colors may be three colors of R, G, and B, or four colors of other colors such as white W or yellow Y may be added, which is not limited herein.
  • Step 102 Perform backlight boundary expansion on the backlight partitions according to a preset condition, and determine, by using data information after the backlight boundary is expanded, a backlight opening coefficient of each backlight partition.
  • the liquid crystal display panel first acquires a gray scale matrix formed by the maximum gray scale value of the image to be displayed of each corresponding backlight partition.
  • each grayscale value of each backlight partition is acquired one by one, and statistics are performed to obtain a quantity corresponding to each grayscale value of each backlight partition.
  • the grayscale value is 5 for 200, 3 for 178, and 7 for 255.
  • a threshold is set for the number of maximum grayscale values. After obtaining the quantity corresponding to each grayscale value, comparing the quantity corresponding to each gray level with a preset number threshold, obtaining a maximum gray level value greater than the quantity threshold, and using the maximum gray level value as the backlight The maximum grayscale value of the partition, and fills the maximum grayscale value into the grayscale matrix.
  • the maximum gray scale value of the backlight partition is determined.
  • set the grayscale value that is, when the maximum grayscale value of any partition is detected as 0, it is determined that the preset grayscale value is the maximum grayscale value of the partition.
  • a threshold is set for the degree of optical crosstalk, and when the degree of optical crosstalk of the adjacent partition exceeds the threshold, the adjacent partition is determined as the backlight partition for boundary expansion. Adjacent partitions.
  • boundary expansion is performed for each backlight partition correspondingly in combination with the number.
  • the matrix expression of the backlight opening factor of each partition is set to Blu (block_num_x, block_num_y), where x and y are the coordinates of the corresponding backlight partition, and the matrix expression of the backlight opening coefficient after the boundary expansion of the backlight partition is performed.
  • the formula is Blu_new (block_num_x+2m, block_num_y+2n), where m is the number of adjacent partitions that are laterally extended, and n is the number of adjacent partitions that are longitudinally extended.
  • the optical luminance crosstalk caused by the mirroring reaction is also taken into account, that is, m and n in front of the function.
  • m and n there is a coefficient of 2 to increase the resolution of the backlight opening factor.
  • the matrix expression Blu (block_num_x, block_num_y) of the backlight opening factor of the original partitions is assigned by mirror symmetry in the boundary partition, and the rest are assigned. Is 0, for example,
  • the gray-scale matrix composed of the maximum gray-scale value and the minimum expansion coefficient of each backlight partition of the liquid crystal display panel are used to determine a backlight opening coefficient after the boundary expansion of each backlight partition; wherein the minimum expansion coefficient is The pixel partition corresponding to the partition is determined, and once the pixel distribution is determined, the minimum expansion coefficient is also determined.
  • the minimum expansion factor indicates the degree of optical luminance crosstalk to the backlight partition.
  • the adjacent symmetric partitions of the respective backlight partitions have the same minimum expansion factor.
  • diff3 1.
  • the brightness of any backlight partition is mainly contributed by the brightness superposition of the two partitions in the current partition and the lateral direction, considering the mirror image.
  • the response that is, the backlight partition of the boundary extension is five, and the minimum expansion coefficients of the five backlight partitions are set to diff1, diff2, diff3, diff4, and diff5, and can be listed for any backlight partition (1, N).
  • the backlight opening coefficient Blu_new (block_num_x, block_num_y) after the boundary expansion is performed by the backlight partition is obtained.
  • the backlight opening factor Blu (block_num_x, block_num_y) of each partition can be obtained.
  • the proportional threshold is set, and when the backlight opening coefficient is less than the proportional threshold, the backlight opening coefficient is set to zero.
  • the ratio threshold may be a negative number.
  • the number of bits of the backlight opening factor is, for example, the ratio threshold is 1/2 ⁇ bit_2.
  • the brightness distribution of the entire liquid crystal display panel is calculated according to the backlight expansion factor Blu_new (block_num_x, block_num_y) after the boundary is expanded, and the driving current Lum (blu_beight, blu_width) of the liquid crystal display panel is obtained, wherein Blu_height, blu_width is the dimension of the luminance processing matrix.
  • the dimension of the luminance processing matrix describing the backlight precision is extended to the image gray scale, that is, the luminance distribution Lum (blu_height, blu_width) is extended to the complete image resolution Lum_new (height, width). ).
  • the driving voltage of the liquid crystal display panel is not limited herein.
  • Lum_new(height, width) is the image resolution corresponding to the driving current
  • height is the height resolution of the image
  • width is the width resolution of the image
  • n is the number of grayscale colors.
  • the feature data of the output image is an image penetration rate.
  • the image penetration rate is further compared.
  • 1 is determined as the feature data of the output image.
  • the feature data of the output image is transmitted to the image driving unit, and the driving current is delivered to the backlight brightness controller.
  • the input image is converted by the gamma function when performing the original calculation
  • the image to be displayed corresponding to each backlight partition of the liquid crystal display panel is first normalized to obtain feature data of the input image; Performing backlight boundary expansion of each backlight partition, determining a backlight opening coefficient of each backlight partition by using data information after the backlight boundary is extended; performing fusion processing on the backlight opening coefficients of the respective backlight partitions to obtain a driving current of the liquid crystal display panel; Based on feature data And the driving current acquires feature data of the output image of each backlight partition of the liquid crystal display panel; finally, the liquid crystal display panel is driven by the driving current to display the output image according to the feature data.
  • the backlight brightness display requirement of the input image is obtained, and then the optical brightness crosstalk of the adjacent partition of any backlight partition to the backlight partition is included in the image.
  • the backlight calculation of the backlight partition not only the problem of inaccurate control of the partition brightness due to the luminance crosstalk affected by the light diffusion is solved, but the contrast of the display screen is further improved, and the picture quality is improved.
  • the crosstalk light is fully utilized, which further saves power consumption of the liquid crystal display panel.
  • FIG. 4 is a schematic structural view of an embodiment of a liquid crystal display panel of the present invention.
  • the liquid crystal display panel of the present embodiment can implement the driving method of any of the above embodiments.
  • the liquid crystal display panel of the present embodiment includes a data input circuit 401, a data processing circuit 402, a drive circuit 403, and a display circuit 404.
  • the input circuit 401, the driving circuit 403, and the display circuit 404 are respectively connected to the processing circuit 402, and the display circuit 404 is also connected to the driving circuit 403.
  • the data input circuit 401 is configured to normalize the image to be displayed of each backlight partition corresponding to the liquid crystal display panel to obtain feature data of the input image.
  • the liquid crystal display panel of the present embodiment counts the light diffusion crosstalk caused by the adjacent backlight partitions of the respective backlight partitions of the liquid crystal display panel into the actual backlight control information of the backlight partition. Improve the display quality of the liquid crystal display panel.
  • the data input circuit 401 acquires the input luminance of the image to be displayed by acquiring the input information of the image to be displayed.
  • the data input circuit 401 first acquires an image to be displayed, and normalizes the image to be displayed of each backlight partition to acquire feature data indata (height, width, n) of the image to be displayed.
  • the feature data is a transmittance of the liquid crystal display panel.
  • the data input circuit 401 is based on equation (1) To get the feature data.
  • gray is a gray matrix formed by each backlight partition corresponding to the input image
  • height is the height resolution of the image
  • width is the width resolution of the image
  • bit is the bit of the input image.
  • the number for example, the number of bits of the input image is 8 bits, and in other embodiments, it may be other bits. Such as 10bit, etc., not limited here.
  • n is the number of gray scale colors, and the number of the gray scale colors may be three colors of R, G, and B, or four colors of other colors such as white W or yellow Y may be added, which is not limited herein.
  • the data processing circuit 402 is configured to perform boundary expansion on the backlights of the respective backlight partitions according to a preset condition, and determine, by using the data information after the boundary expansion, a backlight opening coefficient of each of the backlight partitions; and a backlight opening coefficient of each of the backlight partitions Performing a fusion process to obtain a driving current of the liquid crystal display panel; and acquiring feature data of an output image of each backlight partition of the liquid crystal display panel according to the feature data and the driving current.
  • the data processing circuit 402 first acquires a grayscale matrix formed by the maximum grayscale value of the image to be displayed of the corresponding backlight partition.
  • each grayscale value of each backlight partition is acquired one by one, and statistics are performed to obtain a quantity corresponding to each grayscale value of each backlight partition.
  • the grayscale value is 5 for 200, 3 for 178, and 7 for 255.
  • a threshold is set for the number of maximum grayscale values. After obtaining the quantity corresponding to each grayscale value, the data processing circuit 402 compares the number corresponding to each grayscale with a preset number threshold, obtains a maximum grayscale value greater than the threshold, and sets the maximum grayscale The value is used as the maximum grayscale value of the backlight partition, and the maximum grayscale value is filled into the grayscale matrix.
  • the grayscale value is set, and the data processing circuit 402 determines that the preset grayscale value is the maximum grayscale value of the partition when detecting that the maximum grayscale value of any partition is 0.
  • the data processing circuit 402 After determining the gray matrix formed by the maximum values of the respective backlight partitions, the data processing circuit 402 performs statistics on the number of partitions adjacent to the respective backlight partitions and having optical crosstalk to the backlight partition, and determines that the backlight partition is performed. The number of adjacent partitions that the boundary expands. In order to reduce the workload caused by the error, in the embodiment, a threshold is set for the degree of optical crosstalk, and when the degree of optical crosstalk of the adjacent partition exceeds the threshold, the adjacent partition is determined as the backlight partition for boundary expansion. Adjacent partitions.
  • the data processing circuit 402 combines the number of adjacent partitions that determine the boundary expansion.
  • the boundary expansion is performed corresponding to each backlight partition.
  • the matrix expression of the backlight opening factor of each partition is set to Blu (block_num_x, block_num_y), where x and y are the coordinates of the corresponding backlight partition, and the matrix expression of the backlight opening coefficient after the boundary expansion of the backlight partition is performed.
  • the formula is Blu_new (block_num_x+2m, block_num_y+2n), where m is the number of adjacent partitions that are laterally extended, and n is the number of adjacent partitions that are longitudinally extended.
  • the optical luminance crosstalk caused by the mirroring reaction is also taken into account, that is, m and n in front of the function.
  • m and n there is a coefficient of 2 to increase the resolution of the backlight opening factor.
  • the matrix expression Blu (block_num_x, block_num_y) of the backlight opening factor of each original partition is assigned by mirroring symmetry in the boundary partition, and the rest is assigned a value of 0, for example ,
  • the gray-scale matrix composed of the maximum gray-scale value and the minimum expansion coefficient of each backlight partition of the liquid crystal display panel are used to determine a backlight opening coefficient after the boundary expansion of each backlight partition; wherein the minimum expansion coefficient is The pixel partition corresponding to the partition is determined, and once the pixel distribution is determined, the minimum expansion coefficient is also determined.
  • the minimum expansion factor indicates the degree of optical luminance crosstalk to the backlight partition.
  • the adjacent symmetric partitions of the respective backlight partitions have the same minimum expansion factor.
  • diff3 1.
  • the brightness of any backlight partition is mainly contributed by the brightness superposition of the two partitions in the current partition and the lateral direction, taking into account the mirror reaction, that is, the present
  • the sub-boundary extension has five backlight partitions.
  • the minimum expansion coefficients of the five backlight partitions are diff1, diff2, diff3, diff4, and diff5.
  • the following multiple times can be listed.
  • the backlight opening coefficient Blu_new (block_num_x, block_num_y) after the boundary expansion is performed by the backlight partition is obtained.
  • the backlight opening factor Blu (block_num_x, block_num_y) of each partition can be obtained.
  • the proportional threshold is set, and the backlight opening factor is smaller than the When the ratio threshold is set, set the backlight opening factor to 0.
  • the ratio threshold may be a negative number.
  • the number of bits of the backlight opening factor is, for example, the ratio threshold is 1/2 ⁇ bit_2.
  • the data processing circuit 402 further performs a fusion process on the backlight opening coefficients of the respective backlight partitions to obtain a driving current of the liquid crystal display panel.
  • the data processing circuit 402 calculates the brightness distribution of the entire liquid crystal display panel according to the boundary-expanded backlight opening factor Blu_new (block_num_x, block_num_y), and obtains the brightness distribution of the liquid crystal display panel, that is, the driving current Lum (blu_height, blu_width). Where blu_height and blu_width are the dimensions of the luminance processing matrix.
  • the dimension of the luminance processing matrix describing the backlight precision is extended to the image gray scale, that is, the luminance distribution Lum (blu_height, blu_width) is extended to the complete image resolution Lum_new (height, width). ).
  • the data processing circuit 402 can also determine that the driving voltage of the liquid crystal display panel is not limited herein.
  • the data processing circuit 402 acquires feature data of an output image of each backlight partition of the liquid crystal display panel according to the feature data and the driving current.
  • Lum_new(height, width) is the image resolution corresponding to the driving current
  • height is the height resolution of the image
  • width is the width resolution of the image
  • n is the number of grayscale colors.
  • the feature data of the output image is an image penetration rate.
  • the image penetration rate is further compared.
  • 1 is determined as the feature data of the output image.
  • the driving circuit 403 is configured to drive the display circuit 404 by the driving current to display the output image according to the feature data.
  • the drive circuit 403 transmits the feature data of the output image to the image drive unit to deliver the drive current to the backlight brightness controller.
  • the liquid crystal display panel of the present embodiment obtains the backlight brightness display requirement of the input image by counting the feature data of the current input image, and then partitions the adjacent partition of any backlight partition into the backlight.
  • the optical brightness crosstalk is incorporated into the backlight calculation of the backlight partition, which not only solves the problem of inaccurate control of the partition brightness due to the luminance crosstalk affected by the light diffusion, but also improves the contrast of the display screen and improves the picture quality.
  • the crosstalk light is fully utilized, which further saves power consumption of the liquid crystal display panel.
  • the present invention further provides a liquid crystal display comprising the liquid crystal display panel of any of the above embodiments, by performing statistics on the feature data of the current input image, obtaining a backlight brightness display requirement of the input image, and then The optical brightness crosstalk of the backlight partition of the adjacent partition of the backlight partition is incorporated into the backlight calculation of the backlight partition, which not only solves the problem of inaccurate control of the partition brightness caused by the luminance crosstalk affected by the light diffusion, so that the display The contrast of the picture is further improved to improve the picture quality. Moreover, the crosstalk light is fully utilized, which further saves power consumption of the liquid crystal display panel. I will not repeat them here.

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Abstract

一种液晶显示面板及其驱动方法、液晶显示器，该驱动方法包括：将液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据（101）；根据预设条件对各个背光分区的进行背光边界扩展，通过背光边界扩展后的数据信息确定各个背光分区的背光打开系数（102）；对各个背光分区的背光打开系数进行融合处理，得到液晶显示面板的驱动电流（103）；根据特征数据以及驱动电流获取各个背光分区的输出图像的特征数据（104）；通过驱动电流以及特征数据显示输出图像（105）。通过上述方式，能够使液晶显示面板在存在光串扰的情况下，也能显示高质量的画面信息。

Description

[根据细则37.2由ISA制定的发明名称]　液晶显示面板及其驱动方法、液晶显示器 【技术领域】
本发明涉及液晶显示领域，特别是涉及一种液晶显示面板及其驱动方法、液晶显示器。
【背景技术】
伴随着液晶显示技术的不断发展，液晶显示面板已经涉及到用户生活的方方面面，如PC机、智能手机以及平板电脑等。
液晶显示器由于自身并不具备OLED自发光的特性，因此，在进行显示时需要采用背光，目前液晶显示器的背光技术主要包括直下式和侧入式两种入光方式，其中，侧入式的背光模组需要使用导光板，直下式主要通过不同分区的LED亮暗实现。无论是哪一种入光方式都是采用动态分区背光的形式提供背光。
现有的动态分区背光主要是根据不同的分区所需要的亮度进行单独光源控制，但是，在实际显示过程中，由于光的扩散，相邻的分区之间存在光串扰，严重影响了画面显示的质量，影响用户体验。
【发明内容】
本发明主要解决的技术问题是提供一种液晶显示面板及其驱动方法、液晶显示器，能够使液晶显示面板在存在光串扰的情况下，也能显示高质量的画面信息。
为解决上述技术问题，本发明采用的第一个技术方案是：提供一种液晶显示面板的驱动方法，所述驱动方法包括如下步骤：
将所述液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据；
根据预设条件对所述各个背光分区的进行背光边界扩展，通过背光边界扩展后的数据信息确定所述各个背光分区的背光打开系数；
对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；
根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分 区的输出图像的特征数据；
通过所述驱动电流驱动所述液晶显示面板按照所述特征数据显示所述输出图像。
为解决上述技术问题，本发明采用的第二个技术方案是：提供一种液晶显示面板，所述液晶显示面板包括数据输入电路，数据处理电路、驱动电路以及显示电路，其中，所述输入电路、所述驱动电路以及所述显示电路分别与所述数据处理电路电连接，所述显示电路还与所述驱动电路相连接，
所述数据输入电路用于将所述液晶显示面板对应的各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据；
所述数据处理电路用于根据预设条件对所述各个背光分区的背光进行边界扩展，通过边界扩展后的数据信息确定所述各个背光分区的背光打开系数；对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据；
所述驱动电路用于通过所述驱动电流驱动所述显示电路按照所述特征数据显示所述输出图像。
为解决上述技术问题，本发明采用的第三个技术方案是：提供一种液晶显示器，所述液晶显示器包上述任一实施方式的液晶显示面板。
本发明的有益效果是：区别于现有技术的情况，本实施方式的液晶显示面板在进行驱动时，先将液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据；根据预设条件对各个背光分区的进行背光边界扩展，通过背光边界扩展后的数据信息确定各个背光分区的背光打开系数；对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；根据特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据；最后通过驱动电流驱动所述液晶显示面板按照所述特征数据显示所述输出图像。在本实施方式中，通过对当前输入图像的特征数据进行统计，得到该输入图像的背光亮度显示需求，再将任一背光分区的相邻的分区对该背光分区的光学亮度串扰，纳入到该背光分区的背光计算中，不仅解决了由于光扩散影响的亮度串扰而带来的分区亮度控制不精确的问题，使显示画面的对比度进一步提高，改善画面质量。而且，将串扰的光进行充分利用，进一步节省了该液晶显示面板的功耗。
【附图说明】
图1是本发明液晶显示面板的驱动方法一实施方式的流程示意图；
图2是图1液晶显示面板的驱动方法一具体实施方式的背光打开系数扩展示意图；
图3是本发明液晶显示面板的驱动方法一具体实施方式的最小扩展系数分布示意图；
图4是本发明基于ISIM的智能终端另一实施方式的结构示意图。
【具体实施方式】
参阅图1，图1是本发明液晶显示面板的驱动方法一实施方式的流程示意图。
如图1所示，本实施方式的驱动方法包括如下步骤：
101：将所述液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据。
本实施方式的液晶显示面板为了实现画面显示与背光系统的最大程度的统一，将液晶显示面板的各个背光分区的相邻的背光分区的引起光扩散串扰统计到该背光分区的实际背光控制信息中，提高液晶显示面板的显示质量。
在本步骤中，通过对待显示图像的输入信息进行获取，确定本次待显示图像的背光亮度需求。
具体地，液晶显示面板首先获取待显示图像，并对各个背光分区的待显示图像进行归一化处理，来获取该待显示图像的特征数据indata(height，width，n)。在一个具体的实施方式中，该特征数据为液晶显示面板的穿透率。
在一个具体的实施方式中，液晶显示面板根据公式(1)
Figure PCTCN2017090502-appb-000001
来获取该特征数据。
其中，gray(height，width，n)为所述输入图像对应的各个背光分区构成的灰阶矩阵，height为图像的高度分辨率，width为图像的宽度分辨率，bit为所述输入图像的位数，如输入图像的位数为8bit，在其他实施方式中，也可以为其他位数，如10bit等，在此不做限定。n为构成灰阶颜色的数量，该构成灰阶颜色的数量可以为R、G、B三色，也可以为增加了白色W或黄色Y等其他颜色的四色，在此不做限定。所述gamma为该液晶显示面板的幂次，即gamma曲线，在本实施方式中，该gamma＝2.2，在其他实施方式中，gamma值还可以为其他值，如 gamma＝2。在此不做限定。
102：根据预设条件对所述各个背光分区的进行背光边界扩展，通过背光边界扩展后的数据信息确定所述各个背光分区的背光打开系数。
具体地，液晶显示面板首先获取对应的各个背光分区的待显示图像的最大灰阶值所形成的灰阶矩阵。在具体实施方式中，对每个背光分区的每一个灰阶值逐一获取，并对进行统计，得到每个背光分区每个灰阶值对应的数量。例如，灰阶值为200的5个，178的3个，255的7个等。
为了避免由于偶然的图像噪点影响统计结果，保证最大的灰阶值的有效性，对最大灰阶值的数量设置数量阈值。在得到各个灰阶值对应的数量后，分别将每个灰阶对应的数量与预设数量阈值进行比较，获取数量大于该数量阈值的最大灰阶值，并将该最大灰阶值作为该背光分区的最大灰阶值，并将该最大灰阶值填充到灰阶矩阵中。
在另一个实施方式中，由于在灰阶值都为零时，可能会出现漏光现象，使得在背光打开时任意分区的亮度无法做到纯黑，因此，在确定背光分区的最大灰阶值为0时，设置灰阶值，即在检测到任一分区的最大灰阶值为0时，确定预设灰阶值为所述分区的最大灰阶值。
在确定上述各个背光分区的最大值构成的的灰阶矩阵后，对与该各个背光分区相邻且对该背光分区存在光串扰的分区的数量进行统计，确定该背光分区进行边界扩展的相邻分区的数量。为了减少因为误差额外增加的工作量，本实施方式中，对光串扰程度设置一个阈值，在相邻分区的光串扰程度超过该阈值时，将该相邻分区确定为该背光分区进行边界扩展的相邻分区。
在确定进行边界扩展的相邻分区的数量后，结合该数量对各个背光分区对应进行边界扩展。例如，设定各分区的背光打开系数的矩阵表达式为Blu(block_num_x，block_num_y)，其中，x、y为对应背光分区的坐标，在对该背光分区进行边界扩展后的背光打开系数的矩阵表达式为Blu_new(block_num_x+2m，block_num_y+2n)，其中，m为横向进行边界扩展的相邻分区的数量，n为纵向进行边界扩展的相邻分区的数量。
由于光在传输过程中存在反射，因此，相邻分区之间可能存在镜像反应，因此，在进行边界扩展时，将镜像反应引起的光学亮度串扰也考虑进来了，即函数中m和n前面均有一个系数2，以增加背光打开系数求解精度。为简化计 算，以m＝0，n＝2为例，参考图2，将原始各分区的背光打开系数的矩阵表达式Blu(block_num_x，block_num_y)采用以边界分区做镜像对称的方式赋值，其余赋值为0，例如，
Figure PCTCN2017090502-appb-000002
最后，再通过该最大灰阶值组成的灰阶矩阵、以及液晶显示面板各个背光分区的最小扩展系数确定所述各个背光分区进行边界扩展后的背光打开系数；其中，所述最小扩展系数由所述分区对应的像素分区确定，在像素分布一旦确定，其最小扩展系数也确定了。其中，最小扩展系数表示对该背光分区的光学亮度串扰的程度。
在一个可选的实施方式中，各个背光分区的相邻对称分区的最小扩展系数相同。例如，在本实施方式中，diff1＝diff5＝0.2，diff2＝diff4＝0.7，diff3＝1。
具体地，为简化计算，以m＝0，n＝2为例，参考图3，即认为任一背光分区的亮度主要由当前分区及横向方向相邻2个分区的亮度叠加贡献，考虑到镜像反应，即本次边界扩展的背光分区为5个，设定该5个背光分区的最小扩展系数分别为diff1，diff2，diff3，diff4，diff5，针对任一背光分区(1，N)，可列出如下多元一次方程，max(1，N)＝diff1*Blu_new(1，N-2)+diff2*Blu_new(1，N-1)+diff3*Blu_new(1，N)+diff4*Blu_new(1，N+1)+diff5*Blu_new(1，N+2)。
通过求解该多元一次方程，得到背光分区进行边界扩展后的背光打开系数Blu_new(block_num_x，block_num_y)。再根据边界扩展的逆运算，可以得到各分区的背光打开系数Blu(block_num_x，block_num_y)。
为了保证背光打开系数的有效性，设定比例阈值，在背光打开系数小于该比例阈值时，设定背光打开系数为0。其中，该比例阈值可以为负数。一般情况下，该背光打开系数的位数bit数，例如可以取该比例阈值为1/2^bit_2。
103：对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流。
具体地，根据边界扩展后的背光打开系数Blu_new(block_num_x，block_num_y)计算整个液晶显示面板的亮度分布情况，得到该液晶显示面板的驱动电流Lum(blu_beight，blu_width)，其中，其中， blu_height，blu_width为亮度处理矩阵的维数。
在其他实施方式中，为了进一步提高计算的精度，将描述背光精度的亮度处理矩阵的维数扩展为图像灰阶，即将亮度分布Lum(blu_height，blu_width)扩展为完整图像分辨率Lum_new(height，width)。
在其他实施方式中，也可以确定该液晶显示面板的驱动电压在此不做限定。
104：根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据。
具体地，本实施方式通过公式(2)获取所述各个背光分区的输出图像outdata(height，width，n)，outdata(height，width，n)＝min(1，Lum_new(height，width)*indata(height，width，n))(2)
其中，Lum_new(height，width)为所述驱动电流对应的图像分辨率，height为图像的高度分辨率，width为图像的宽度分辨率，n为构成灰阶颜色的数量。
在本实施方式中，该输出图像的特征数据为图像穿透率，为了保证该图像穿透率的有效性，在根据计算得到该特征数据后，进一步与图像穿透率1进行比较，在该特征数据超过图像穿透率最大值1时，将1确定为该输出图像的特征数据。
105：通过所述驱动电流驱动所述液晶显示面板按照所述特征数据显示所述输出图像。
具体地，将该输出图像的特征数据传送至图像驱动单元，将驱动电流输送至背光亮度控制器。具体地，由于输入图像在进行原始计算时，是通过gamma函数进行转换过的，因此，在对该输入图像对应的输出图像进行显示时，先对该输出图像进行反gamma函数处理，再输出至图像驱动单元进行显示。即，通过如下所示的公式进行反gamma运算，gray_new(height，width，n)＝2bit*outdata(height，width，n)1/gamma。
区别于现有技术，本实施方式的液晶显示面板在进行驱动时，先将液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据；根据预设条件对各个背光分区的进行背光边界扩展，通过背光边界扩展后的数据信息确定各个背光分区的背光打开系数；对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；根据特征数据 以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据；最后通过驱动电流驱动所述液晶显示面板按照所述特征数据显示所述输出图像。在本实施方式中，通过对当前输入图像的特征数据进行统计，得到该输入图像的背光亮度显示需求，再将任一背光分区的相邻的分区对该背光分区的光学亮度串扰，纳入到该背光分区的背光计算中，不仅解决了由于光扩散影响的亮度串扰而带来的分区亮度控制不精确的问题，使显示画面的对比度进一步提高，改善画面质量。而且，将串扰的光进行充分利用，进一步节省了该液晶显示面板的功耗。
参阅图4，图4是本发明液晶显示面板一实施方式的结构示意图。本实施方式的液晶显示面板可以实施上述任一实施方式的驱动方法。
如图4所示，本实施方式的液晶显示面板包括数据输入电路401、数据处理电路402，驱动电路403以及显示电路404。其中，输入电路401、驱动电路403以及显示电路404分别与处理电路402相连接，该显示电路404还与驱动电路403相连接。
数据输入电路401用于将所述液晶显示面板对应的各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据。
本实施方式的液晶显示面板为了实现画面显示与背光系统的最大程度的统一，将液晶显示面板的各个背光分区的相邻的背光分区的引起光扩散串扰统计到该背光分区的实际背光控制信息中，提高液晶显示面板的显示质量。
数据输入电路401通过对待显示图像的输入信息进行获取，确定本次待显示图像的背光亮度需求。
具体地，数据输入电路401首先获取待显示图像，并对各个背光分区的待显示图像进行归一化处理，来获取该待显示图像的特征数据indata(height，width，n)。在一个具体的实施方式中，该特征数据为液晶显示面板的穿透率。
在一个具体的实施方式中，数据输入电路401根据公式(1)
Figure PCTCN2017090502-appb-000003
来获取该特征数据。
其中，gray(height，width，n)为所述输入图像对应的各个背光分区构成的灰阶矩阵，height为图像的高度分辨率，width为图像的宽度分辨率，bit为所述输入图像的位数，如输入图像的位数为8bit，在其他实施方式中，也可以为其他位数， 如10bit等，在此不做限定。n为构成灰阶颜色的数量，该构成灰阶颜色的数量可以为R、G、B三色，也可以为增加了白色W或黄色Y等其他颜色的四色，在此不做限定。所述gamma为该液晶显示面板的幂次，即gamma曲线，在本实施方式中，该gamma＝2.2，在其他实施方式中，gamma值还可以为其他值，如gamma＝2。在此不做限定。
数据处理电路402用于根据预设条件对所述各个背光分区的背光进行边界扩展，通过边界扩展后的数据信息确定所述各个背光分区的背光打开系数；对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据。
具体地，数据处理电路402首先获取对应的各个背光分区的待显示图像的最大灰阶值所形成的灰阶矩阵。在具体实施方式中，对每个背光分区的每一个灰阶值逐一获取，并对进行统计，得到每个背光分区每个灰阶值对应的数量。例如，灰阶值为200的5个，178的3个，255的7个等。
为了避免由于偶然的图像噪点影响统计结果，保证最大的灰阶值的有效性，对最大灰阶值的数量设置数量阈值。数据处理电路402在得到各个灰阶值对应的数量后，分别将每个灰阶对应的数量与预设数量阈值进行比较，获取数量大于该数量阈值的最大灰阶值，并将该最大灰阶值作为该背光分区的最大灰阶值，并将该最大灰阶值填充到灰阶矩阵中。
在另一个实施方式中，由于在灰阶值都为零时，可能会出现漏光现象，使得在背光打开时任意分区的亮度无法做到纯黑，因此，在确定背光分区的最大灰阶值为0时，设置灰阶值，数据处理电路402在检测到任一分区的最大灰阶值为0时，确定预设灰阶值为所述分区的最大灰阶值。
数据处理电路402在确定上述各个背光分区的最大值构成的的灰阶矩阵后，对与该各个背光分区相邻的且对该背光分区存在光串扰的分区的数量进行统计，确定该背光分区进行边界扩展的相邻分区的数量。为了减少因为误差额外增加的工作量，本实施方式中，对光串扰程度设置一个阈值，在相邻分区的光串扰程度超过该阈值时，将该相邻分区确定为该背光分区进行边界扩展的相邻分区。
数据处理电路402在确定进行边界扩展的相邻分区的数量后，结合该数量 对各个背光分区对应进行边界扩展。例如，设定各分区的背光打开系数的矩阵表达式为Blu(block_num_x，block_num_y)，其中，x、y为对应背光分区的坐标，在对该背光分区进行边界扩展后的背光打开系数的矩阵表达式为Blu_new(block_num_x+2m，block_num_y+2n)，其中，m为横向进行边界扩展的相邻分区的数量，n为纵向进行边界扩展的相邻分区的数量。
由于光在传输过程中存在反射，因此，相邻分区之间可能存在镜像反应，因此，在进行边界扩展时，将镜像反应引起的光学亮度串扰也考虑进来了，即函数中m和n前面均有一个系数2，以增加背光打开系数求解精度。为简化计算，以m＝0，n＝2为例，将原始各分区的背光打开系数的矩阵表达式Blu(block_num_x，block_num_y)采用以边界分区做镜像对称的方式赋值，其余赋值为0，例如，
Figure PCTCN2017090502-appb-000004
最后，再通过该最大灰阶值组成的灰阶矩阵、以及液晶显示面板各个背光分区的最小扩展系数确定所述各个背光分区进行边界扩展后的背光打开系数；其中，所述最小扩展系数由所述分区对应的像素分区确定，在像素分布一旦确定，其最小扩展系数也确定了。其中，最小扩展系数表示对该背光分区的光学亮度串扰的程度。
在一个可选的实施方式中，各个背光分区的相邻对称分区的最小扩展系数相同。例如，在本实施方式中，diff1＝diff5＝0.2，diff2＝diff4＝0.7，diff3＝1。
具体地，为简化计算，以m＝0，n＝2为例，即认为任一背光分区的亮度主要由当前分区及横向方向相邻2个分区的亮度叠加贡献，考虑到镜像反应，即本次边界扩展的背光分区为5个，设定该5个背光分区的最小扩展系数分别为diff1，diff2，diff3，diff4，diff5，针对任一背光分区(1，N)，可列出如下多元一次方程，max(1，N)＝diff1*Blu_new(1，N-2)+diff2*Blu_new(1，N-1)+diff3*Blu_new(1，N)+diff4*Blu_new(1，N+1)+diff5*Blu_new(1，N+2)。
通过求解该多元一次方程，得到背光分区进行边界扩展后的背光打开系数Blu_new(block_num_x，block_num_y)。再根据边界扩展的逆运算，可以得到各分区的背光打开系数Blu(block_num_x，block_num_y)。
为了保证背光打开系数的有效性，设定比例阈值，在背光打开系数小于该 比例阈值时，设定背光打开系数为0。其中，该比例阈值可以为负数。一般情况下，该背光打开系数的位数bit数，例如可以取该比例阈值为1/2^bit_2。
数据处理电路402再对各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流。
具体地，数据处理电路402根据边界扩展后的背光打开系数Blu_new(block_num_x，block_num_y)计算整个液晶显示面板的亮度分布情况，得到该液晶显示面板的亮度分布，即驱动电流Lum(blu_height，blu_width)，其中，其中，blu_height，blu_width为亮度处理矩阵的维数。
在其他实施方式中，为了进一步提高计算的精度，将描述背光精度的亮度处理矩阵的维数扩展为图像灰阶，即将亮度分布Lum(blu_height，blu_width)扩展为完整图像分辨率Lum_new(height，width)。
在其他实施方式中，数据处理电路402也可以确定该液晶显示面板的驱动电压在此不做限定。
数据处理电路402根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据。
具体地，本实施方式通过公式(2)获取所述各个背光分区的输出图像outdata(height，width，n)，outdata(height，width，n)＝min(1，Lum_new(height，width)*indata(height，width，n))(2)
其中，Lum_new(height，width)为所述驱动电流对应的图像分辨率，height为图像的高度分辨率，width为图像的宽度分辨率，n为构成灰阶颜色的数量。
在本实施方式中，该输出图像的特征数据为图像穿透率，为了保证该图像穿透率的有效性，在根据计算得到该特征数据后，进一步与图像穿透率1进行比较，在该特征数据超过图像穿透率最大值1时，将1确定为该输出图像的特征数据。
驱动电路403用于通过所述驱动电流驱动所述显示电路404按照所述特征数据显示所述输出图像。
具体地，驱动电路403将该输出图像的特征数据传送至图像驱动单元，将驱动电流输送至背光亮度控制器。具体地，由于输入图像在进行原始计算时，是通过gamma函数进行转换过的，因此，在对该输入图像对应的输出图像进行 显示时，先对该输出图像进行反gamma函数处理，再输出至图像驱动单元进行显示。即，通过如下所示的公式进行反gamma运算，gray_new(height，width，n)＝2bit*outdata(height，width，n)1/gamma。
区别于现有技术，本实施方式的液晶显示面板通过对当前输入图像的特征数据进行统计，得到该输入图像的背光亮度显示需求，再将任一背光分区的相邻的分区对该背光分区的光学亮度串扰，纳入到该背光分区的背光计算中，不仅解决了由于光扩散影响的亮度串扰而带来的分区亮度控制不精确的问题，使显示画面的对比度进一步提高，改善画面质量。而且，将串扰的光进行充分利用，进一步节省了该液晶显示面板的功耗。
另外，本发明还提供一种液晶显示器，该液晶显示器包括上述任一实施方的液晶显示面板，通过对当前输入图像的特征数据进行统计，得到该输入图像的背光亮度显示需求，再将任一背光分区的相邻的分区对该背光分区的光学亮度串扰，纳入到该背光分区的背光计算中，不仅解决了由于光扩散影响的亮度串扰而带来的分区亮度控制不精确的问题，使显示画面的对比度进一步提高，改善画面质量。而且，将串扰的光进行充分利用，进一步节省了该液晶显示面板的功耗。在此不再赘述。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (18)

  1. 一种液晶显示面板的驱动方法，其中，所述驱动方法包括如下步骤：
    将所述液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据；
    根据预设条件对所述各个背光分区的进行背光边界扩展，通过背光边界扩展后的数据信息确定所述各个背光分区的背光打开系数；
    对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；
    根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据；
    通过所述驱动电流驱动所述液晶显示面板按照所述特征数据显示所述输出图像。
  2. 根据权利要求1所述的驱动方法，其中，所述将所述液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据的步骤具体包括：
    根据公式(1)将所述液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到所述特征数据indata(height，width，n)，
    Figure PCTCN2017090502-appb-100001
    其中，gray(height，width，n)为所述输入图像对应的各个背光分区构成的灰阶矩阵，height为图像的高度分辨率，width为图像的宽度分辨率，n为构成灰阶颜色的数量，bit为所述输入图像的位数。
  3. 根据权利要求2所述的驱动方法，其中，所述构成灰阶颜色的数量为3或4中的一种。
  4. 根据权利要求1所述的驱动方法，其中，所述根据预设条件对所述各个背光分区的背光进行边界扩展，通过边界扩展后的数据信息确定所述各个背光分区的背光打开系数的步骤具体包括：
    获取所述液晶显示面板对应的各个背光分区的待显示图像的最大灰阶值所形成的灰阶矩阵，
    确定所述各个背光分区进行边界扩展的相邻分区的数量后，结合所述数量 对所述各个背光分区对应进行边界扩展；
    通过所述灰阶矩阵、以及所述液晶显示面板各个背光分区的最小扩展系数确定所述各个背光分区进行边界扩展后的背光打开系数；其中，所述最小扩展系数由所述分区对应的像素分区确定。
  5. 根据权利要求4所述的方法，其中，所述获取所述液晶显示面板的各个背光分区的待显示图像的最大灰阶值所形成的灰阶矩阵的步骤具体包括：
    对所述各个背光分区的待显示图像的灰阶值逐一进行获取，得到所述各个背光分区每个灰阶值对应的数量；
    分别将所述每个灰阶值对应的数量与预设数量阈值进行比较，获取数量大于所述数量阈值的灰阶值，并将所述数量大于所述数量阈值的最大灰阶值确定为对应背光分区的最大灰阶值。
  6. 根据权利要求4所述的方法，其中，在检测到任一分区的最大灰阶值为0时，确定预设灰阶值为所述分区的最大灰阶值。
  7. 根据权利要求4所述的方法，其中，所述各个背光分区的相邻对称分区的最小扩展系数相同。
  8. 根据权利要求5所述的方法，其中，在检测到任一分区的最大灰阶值为0时，确定预设灰阶值为所述分区的最大灰阶值。
  9. 根据权利要求1所述的方法，其中，所述根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据的步骤具体包括：
    通过公式(2)获取所述各个背光分区的输出图像outdata(height，width，n)，outdata(height，width，n)＝min(1，Lum_new(height，width)*indata(height，width，n))(2)
    其中，Lum_new(height，width)为所述驱动电流对应的图像分辨率，height为图像的高度分辨率，width为图像的宽度分辨率，n为构成灰阶颜色的数量。
  10. 一种液晶显示面板，其中，所述液晶显示面板包括数据输入电路，数据处理电路、驱动电路以及显示电路，其中，所述输入电路、所述驱动电路以及所述显示电路分别与所述数据处理电路电连接，所述显示电路还与所述驱动电路相连接，
    所述数据输入电路用于将所述液晶显示面板对应的各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据；
    所述数据处理电路用于根据预设条件对所述各个背光分区的背光进行边界扩展，通过边界扩展后的数据信息确定所述各个背光分区的背光打开系数；对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据；
    所述驱动电路用于通过所述驱动电流驱动所述显示电路按照所述特征数据显示所述输出图像。
  11. 根据权利要求10所述的液晶显示面板，其中，所述数据处理电路具体根据公式(1)将所述液晶显示面板的对应各个背光分区的待显示图像进行归一化处理，得到所述特征数据indata(height，width，n)，
    Figure PCTCN2017090502-appb-100002
    其中，gray(height，width，n)为所述输入图像对应的各个背光分区构成的灰阶矩阵，height为图像的高度分辨率，width为图像的宽度分辨率，n为构成灰阶颜色的数量，bit为所述输入图像的位数。
  12. 根据权利要求11所述的液晶显示面板，其中，所述构成灰阶颜色的数量为3或4中的一种。
  13. 根据权利要求10所述的液晶显示面板，其中，所述数据处理电路在执行根据预设条件对所述各个背光分区的背光进行边界扩展，通过边界扩展后的数据信息确定所述各个背光分区的背光打开系数时，具体用于获取所述液晶显示面板对应的各个背光分区的待显示图像的最大灰阶值所形成的灰阶矩阵，
    确定所述各个背光分区进行边界扩展的相邻分区的数量后，结合所述数量对所述各个背光分区对应进行边界扩展；
    通过所述灰阶矩阵、以及所述液晶显示面板各个背光分区的最小扩展系数确定所述各个背光分区进行边界扩展后的背光打开系数；其中，所述最小扩展系数由所述分区对应的像素分区确定。
  14. 根据权利要求13所述的液晶显示装置，其中，所述数据处理电路获取所述液晶显示面板的各个背光分区的待显示图像的最大灰阶值所形成的灰阶矩阵时，具体用于：
    对所述各个背光分区的待显示图像的灰阶值逐一进行获取，得到所述各个背光分区每个灰阶值对应的数量；
    分别将所述每个灰阶值对应的数量与预设数量阈值进行比较，获取数量大于所述数量阈值的灰阶值，并将所述数量大于所述数量阈值的最大灰阶值确定为对应背光分区的最大灰阶值。
  15. 根据权利要求13所述的液晶显示面板，其中，所述数据处理电路在检测到任一分区的最大灰阶值为0时，确定预设灰阶值为所述分区的最大灰阶值。
  16. 根据权利要求13所述的液晶显示面板，其中，所述各个背光分区的相邻对称分区的最小扩展系数相同。
  17. 根据权利要求11所述的液晶显示面板，其中，所述液晶显示面板在根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据时，具体用于：
    通过公式(2)获取所述各个背光分区的输出图像outdata(height，width，n)，outdata(height，width，n)＝min(1，Lum_new(height，width)*indata(height，width，n))(2)
    其中，Lum_new(height，width)为所述驱动电流对应的图像分辨率，height为图像的高度分辨率，width为图像的宽度分辨率，n为构成灰阶颜色的数量。
  18. 一种液晶显示器，其中，所述液晶显示器包括液晶显示面板，所述液晶显示面板包括数据输入电路，数据处理电路、驱动电路以及显示电路，其中，所述输入电路、所述驱动电路以及所述显示电路分别与所述数据处理电路电连接，所述显示电路还与所述驱动电路相连接，
    所述数据输入电路用于将所述液晶显示面板对应的各个背光分区的待显示图像进行归一化处理，得到输入图像的特征数据；
    所述数据处理电路用于根据预设条件对所述各个背光分区的背光进行边界扩展，通过边界扩展后的数据信息确定所述各个背光分区的背光打开系数；对所述各个背光分区的背光打开系数进行融合处理，得到所述液晶显示面板的驱动电流；根据所述特征数据以及所述驱动电流获取所述液晶显示面板的各个背光分区的输出图像的特征数据；
    所述驱动电路用于通过所述驱动电流驱动所述显示电路按照所述特征数据显示所述输出图像。
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