CN108109595B - Driving method and driving device of display panel - Google Patents

Driving method and driving device of display panel Download PDF

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Publication number
CN108109595B
CN108109595B CN201711367582.7A CN201711367582A CN108109595B CN 108109595 B CN108109595 B CN 108109595B CN 201711367582 A CN201711367582 A CN 201711367582A CN 108109595 B CN108109595 B CN 108109595B
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pixel
driving
sub
pixel unit
same
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CN108109595A (en
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黄北洲
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HKC Co Ltd
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HKC Co Ltd
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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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours

Abstract

The invention relates to a driving method and a driving device of a display panel, wherein the display panel comprises a phaseA plurality of first pixel units and a plurality of second pixel units adjacently arranged, the driving method comprising: dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged; driving two rows of adjacent pixel units in the three rows of continuously arranged pixel units by adopting driving voltages with the same polarity; driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels; the embodiment of the invention can enable V to be VcomThe voltage is free from the influence of parasitic capacitance, thereby ensuring the correctness of image signals, avoiding the phenomena of color cast or abnormal image quality and improving the display quality.

Description

Driving method and driving device of display panel
Technical Field
The present invention relates to the field of display technologies, and in particular, to a driving method and a driving apparatus for a display panel.
Background
Currently, a common display panel usually has a color shift problem to a certain extent due to a deflection angle of liquid crystal molecules or due to Light Emitting stability of an OLED (Organic Light-Emitting Diode) device.
In order to improve the color shift problem, a common driving method of a display panel is to apply two different driving voltage signals, i.e., high and low, to each two adjacent pixel units, and to apply driving voltages with opposite polarities to each two adjacent sub-pixels at the same time. In this way, although the color shift problem may be improved, the positive and negative polarities of the high voltages of the same color sub-pixels in the same column may not match, that is, the number of the sub-pixels with the same color sub-pixels in the same column having the positive polarity and the high voltage has the negative polarity is not the same. Thus, due to the influence of parasitic capacitance, when the number of the sub-pixels with high positive polarity and high voltage in the same color sub-pixel in the same column is greater than that of the sub-pixels with high negative polarity, the common electrode voltage V is increasedcomThe equivalent voltage of (2) is compared with the original voltagecomThe charge actually charged by the sub-pixel with the high voltage with positive polarity is reduced, and the brightness is reduced, and conversely, the charge actually charged by the sub-pixel with the high voltage with negative polarity is increased, and the brightness is increased, so that the display color and the image quality are influenced, and the problem of abnormal image quality output is caused.
Disclosure of Invention
Accordingly, it is desirable to provide a driving method and a driving apparatus for a display panel, which can make VcomThe voltage is prevented from being interfered, the correctness of the image signal is ensured, and the image display quality is improved.
The invention discloses a driving method of a display panel, which comprises the following steps: dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged; driving two rows of adjacent pixel units in the three rows of continuously arranged pixel units by adopting driving voltages with the same polarity; driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
In one embodiment, the three rows of pixel units arranged consecutively are a first position pixel unit, a second position pixel unit and a third position pixel unit in sequence according to the arrangement order; the driving of two adjacent rows of pixel units in the three rows of continuously arranged pixel units by using the driving voltages with the same polarity comprises the following steps: and respectively driving the second position pixel unit and the third position pixel unit by adopting driving voltages with the same polarity.
In one embodiment, the driving the two adjacent rows of the three rows of pixel units arranged in succession by using the driving voltages with the same polarity further includes: and respectively driving the first position pixel unit and the second position pixel unit by adopting driving voltages with opposite polarities.
In one embodiment, each pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are arranged in sequence; the driving of the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting the driving voltages with opposite polarities comprises the following steps: driving a first sub-pixel and a second sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; driving a fourth sub-pixel in the same pixel unit by using a driving voltage with the same polarity as the first sub-pixel; and driving a third sub-pixel in the same pixel unit by using a driving voltage with the same polarity as the second sub-pixel.
In one embodiment, the driving method further includes: and in every two adjacent frame display time, driving the same sub-pixel by adopting driving voltages with opposite polarities.
The present invention also discloses a driving device of a display panel, which includes: the grouping module is used for dividing a plurality of pixel units of the display panel into a plurality of pixel unit groups, and each pixel unit group comprises three rows of adjacent pixel units; the first driving module is used for driving two rows of adjacent pixel units in the three rows of continuously arranged pixel units by adopting driving voltages with the same polarity; the second driving module is used for driving the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; the third driving module is used for respectively driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
In one embodiment, the three rows of pixel units arranged consecutively are a first position pixel unit, a second position pixel unit and a third position pixel unit in sequence according to the arrangement order; the first driving module includes: and the first driving unit is used for respectively driving the second position pixel unit and the third position pixel unit by adopting driving voltages with the same polarity.
In one embodiment, the first driving module further includes: and the second driving unit is used for driving the first position pixel unit and the second position pixel unit respectively by adopting driving voltages with opposite polarities.
In one embodiment, each pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are arranged in sequence;
the second driving module includes: the third driving unit is used for driving the first sub-pixel and the second sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; the fourth driving unit is used for driving a fourth sub-pixel in the same pixel unit by adopting a driving voltage with the same polarity as the first sub-pixel; and the fifth driving unit is used for driving the third sub-pixel in the same pixel unit by adopting the driving voltage with the same polarity as the second sub-pixel.
The invention also discloses another driving method of the display panel, which comprises the following steps: dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged; driving the sub-pixels corresponding to the positions in each two adjacent pixel unit groups by adopting driving voltages with the same polarity; driving two rows of adjacent pixel units in the same pixel unit group by adopting driving voltages with the same polarity; driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; applying a driving voltage with a preset first voltage level to the sub-pixels in the first pixel unit; and applying a driving voltage with a preset second voltage level to the sub-pixels in the second pixel unit; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
The present invention also discloses another driving apparatus of a display panel, which includes: the grouping module is used for dividing a plurality of pixel units of the display panel into a plurality of pixel unit groups, and each pixel unit group comprises three rows of adjacent pixel units; the first driving module is used for driving two rows of adjacent pixel units in the three rows of continuously arranged pixel units by adopting driving voltages with the same polarity; the second driving module is used for driving the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; the third driving module is used for applying a driving voltage with a preset first voltage level to the sub-pixels in the first pixel unit and applying a driving voltage with a preset second voltage level to the sub-pixels in the second pixel unit; the fourth driving module is used for driving the sub-pixels corresponding to the positions in each two adjacent pixel unit groups by adopting driving voltages with the same polarity; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
The invention also discloses a display device which comprises a display panel and the driving device.
The driving method and the driving device of the display panel can make the number of the sub-pixels applied with the positive polarity high voltage level driving voltage and the number of the sub-pixels applied with the negative polarity high voltage level driving voltage equal for each column of the same color sub-pixels, so that V is equalcomThe voltage is not affected by parasitic capacitance, thereby ensuring the correctness of image signals and avoiding the phenomena of color cast or abnormal image quality.
Drawings
FIG. 1 is a flowchart illustrating a driving method of a display panel according to an embodiment of the invention;
FIG. 2 is a diagram illustrating driving voltages of a plurality of pixel units in a display panel according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating driving voltages of sub-pixels in a plurality of pixel units of a display panel according to an embodiment of the invention;
FIG. 4 is a schematic diagram illustrating driving voltages of sub-pixels in a plurality of pixel units of a display panel according to another embodiment of the present invention;
FIG. 5 is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a driving apparatus of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first driving module in the driving apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a second driving module in the driving apparatus according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a driving apparatus of a display panel according to another embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
For example, a driving method of a display panel, the driving method comprising: dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged; driving two rows of adjacent pixel units in the three rows of continuously arranged pixel units by adopting driving voltages with the same polarity; driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
For example, a driving method of a display panel, the driving method comprising: dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged; driving the sub-pixels corresponding to the positions in each two adjacent pixel unit groups by adopting driving voltages with the same polarity; driving two rows of adjacent pixel units in the same pixel unit group by adopting driving voltages with the same polarity; driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; applying a driving voltage with a preset first voltage level to the sub-pixels in the first pixel unit; and applying a driving voltage with a preset second voltage level to the sub-pixels in the second pixel unit; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
For example, a driving apparatus of a display panel, the driving apparatus comprising: the grouping module is used for dividing a plurality of pixel units of the display panel into a plurality of pixel unit groups, and each pixel unit group comprises three rows of adjacent pixel units; the first driving module is used for driving two rows of adjacent pixel units in the three rows of continuously arranged pixel units by adopting driving voltages with the same polarity; the second driving module is used for driving the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; the third driving module is used for respectively driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
For example, a driving apparatus of a display panel, the driving apparatus comprising: the grouping module is used for dividing a plurality of pixel units of the display panel into a plurality of pixel unit groups, and each pixel unit group comprises three rows of adjacent pixel units; the first driving module is used for driving two rows of adjacent pixel units in the three rows of continuously arranged pixel units by adopting driving voltages with the same polarity; the second driving module is used for driving the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; the third driving module is used for applying a driving voltage with a preset first voltage level to the sub-pixels in the first pixel unit and applying a driving voltage with a preset second voltage level to the sub-pixels in the second pixel unit; the fourth driving module is used for driving the sub-pixels corresponding to the positions in each two adjacent pixel unit groups by adopting driving voltages with the same polarity; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
For example, a display device comprises a display panel and a driving device as described above.
The display panel has a plurality of pixel units distributed in a matrix, for example, the display panel has a plurality of first pixel units and a plurality of second pixel units which are adjacently arranged. Each pixel unit includes a plurality of sub-pixels, for example, each pixel unit includes at least a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and optionally, each pixel unit may further include a white sub-pixel.
To further understand the driving method and driving apparatus of the display panel. The following description is made with reference to the accompanying drawings.
Referring to fig. 1 to fig. 2, fig. 1 is a flow chart illustrating a driving method of a display panel according to an embodiment of the invention, where the driving method is applied to the display panel. As shown in fig. 1, the driving method 10 includes the steps of:
s101, dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged.
Specifically, as shown in fig. 2, the display panel 20 has a plurality of pixel units distributed in a matrix, the pixel units include a plurality of first pixel units P1 and a plurality of second pixel units P2, and the first pixel units and the second pixel units are disposed adjacent to each other, or the first pixel units and the second pixel units are alternately arranged. For example, as shown in fig. 2, the pixel units adjacent to the first pixel unit are all the second pixel units, and the pixel units adjacent to the second pixel units are all the first pixel units.
Specifically, each of the pixel units includes a plurality of sub-pixels, for example, each of the pixel units includes a plurality of sub-pixels with different colors, for example, each of the pixel units includes three sub-pixels, i.e., an R (red) sub-pixel, a G (green) sub-pixel, and a B (blue) sub-pixel. Alternatively, each pixel unit includes four kinds of sub-pixels, i.e., an R sub-pixel, a G sub-pixel, a B sub-pixel, and a W (white) sub-pixel, respectively.
And S102, driving two adjacent rows of pixel units in the three rows of continuously arranged pixel units by using the driving voltages with the same polarity.
In one embodiment, the driving voltage is applied to each sub-pixel in the display panel such that the polarities of the driving voltages of two adjacent rows of the three rows of pixel units arranged consecutively in the same pixel unit group are the same.
For example, the three rows of pixel units arranged consecutively are the first position pixel unit, the second position pixel unit and the third position pixel unit according to the arrangement order, and one implementation manner of step S102 is to drive the second position pixel unit and the third position pixel unit with the same polarity. At this time, the first position pixel unit may be driven by a driving voltage with a polarity opposite to or the same as that of the second position pixel unit, for example, step S102 further includes: and respectively driving the first position pixel unit and the second position pixel unit by adopting driving voltages with opposite polarities.
The first position pixel unit, the second position pixel unit and the third position pixel unit respectively refer to a first row of pixel units, a second row of pixel units and a third row of pixel units which are sequentially arranged in a certain sequence in the same pixel unit group. For example, the certain sequence is from left to right, or from right to left, or from top to bottom, or from bottom to top.
The driving voltage polarities of different pixel units are the same, which means that the driving voltage polarities of the sub-pixels corresponding to the positions in different pixel units are the same. For example, when the polarities of the driving voltages of the R sub-pixel in the pixel unit C1 and the R sub-pixel in the pixel unit C2 are the same, the G sub-pixel in the pixel unit C1 and the G sub-pixel in the pixel unit C2 are the same, the B sub-pixel in the pixel unit C1 and the B sub-pixel in the pixel unit C2 are the same, and the W sub-pixel in the pixel unit C1 and the W sub-pixel in the pixel unit C2 are the same, it indicates that the polarities of the driving voltages of the pixel unit C1 and the pixel unit C2 are the same, while the polarities of the driving voltages of the different sub-pixels may be the same or opposite in the same pixel unit.
And S103, driving the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities.
In one embodiment, the plurality of sub-pixels in each pixel unit are divided into a first position sub-pixel and a second position sub-pixel according to the position of the sub-pixel. Wherein the first position and the second position are a middle position and an edge position, respectively. For example, the first-position sub-pixel is a middle-position sub-pixel, and the second-position sub-pixel is an edge-position sub-pixel; or the first position sub-pixel is an edge position sub-pixel, and the second position sub-pixel is a middle position sub-pixel.
For another example, taking the first-position sub-pixel as the middle-position sub-pixel and the second-position sub-pixel as the edge-position sub-pixel, if the pixel unit includes an R sub-pixel, a G sub-pixel and a B sub-pixel arranged in sequence, the first-position sub-pixel includes the G sub-pixel, and the second-position sub-pixel includes the R sub-pixel and the B sub-pixel. At this time, a driving voltage of a first polarity is applied to the G sub-pixel in the same pixel unit, and a driving voltage of a second polarity is applied to the R sub-pixel and the B sub-pixel in the same pixel unit, so that the driving voltages of the middle position sub-pixel and the edge position sub-pixel are opposite in polarity in the same pixel unit.
If the pixel unit includes an R sub-pixel, a G sub-pixel, a B sub-pixel, and a W sub-pixel arranged in sequence, the first position sub-pixel includes the G sub-pixel and the B sub-pixel, and the second position sub-pixel includes the R sub-pixel and the W sub-pixel. At this time, a driving voltage of a first polarity is applied to the G sub-pixel and the B sub-pixel in the same pixel unit, and a driving voltage of a second polarity is applied to the R sub-pixel and the W sub-pixel in the same pixel unit, so that the driving voltages of the middle position sub-pixel and the edge position sub-pixel are opposite in polarity in the same pixel unit.
Wherein the first polarity is positive and the second polarity is negative; alternatively, the first polarity is a negative polarity and the second polarity is a positive polarity. Positive polarity means that the driving voltage is greater than the voltage V of the common electrode preset by the display panelcomI.e. the driving voltage and VcomThe voltage difference is greater than zero; negative polarity means that the drive voltage is less than VcomVoltages, i.e. drive voltage and VcomThe voltage difference is less than zero.
And S104, respectively driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels.
As an embodiment, a driving voltage of a preset first voltage level is applied to the sub-pixels in the first pixel unit; and applying a driving voltage with a preset second voltage level to the sub-pixels in the second pixel unit.
Specifically, the driving voltage levels corresponding to the first pixel unit and the second pixel unit are preset, for example, a first driving voltage level corresponding to the first pixel unit and a second driving voltage level corresponding to the second pixel unit are preset. One of the first driving voltage level and the second driving voltage level is a high voltage level, and the other one of the first driving voltage level and the second driving voltage level is a low voltage level. For example, the first drive voltage level is higher than the second drive voltage level, or the first drive voltage level is lower than the second drive voltage level.
The high voltage level is that for the driven sub-pixel, the input driving voltage is higher than the preset voltage value corresponding to the gray scale of the sub-pixel. Similarly, the low voltage level means that the driving voltage input to the driven sub-pixel is lower than the preset voltage value corresponding to the gray scale of the sub-pixel. For exampleWhen a sub-pixel is normally driven, if a gray scale of 0-255 is to be displayed, V needs to be input correspondingly0～V255The driving voltage of (1). In this embodiment, for example, if the first driving voltage level corresponding to the first pixel unit is a high voltage level and the second driving voltage level corresponding to the second pixel unit is a low voltage level, if the gray scale of any sub-pixel is denoted as K, the corresponding preset voltage value is Vk(k is not less than 0 and not more than 255, k is an integer), the input voltage value is higher than V for each sub-pixel in the first pixel unitkFor each sub-pixel in the second pixel unit, the input voltage value is lower than VkThe driving voltage of (1). Because the first pixel unit and the second pixel unit are adjacently arranged in the display panel, the voltage levels of the driving voltages of every two adjacent pixel units are different, so that the gray scale brightness curve of the pixel units under the side view angle is close to the gray scale brightness curve under the front view angle, and the color cast problem under the side view angle is improved.
In one embodiment, the first voltage level and the second voltage level are two different values in an array; for example, the array is a preset driving voltage level array including a plurality of different driving voltage levels, and the first voltage level and the second voltage level are two different driving voltage levels in the preset driving voltage level array respectively. As an embodiment, the first driving voltage level and the second driving voltage level are mutually set once every time a preset time period passes, that is, every time a period of time passes, or every time a preset time period passes, the first driving voltage level and the second driving voltage level are updated, the first driving voltage level is set as the original second driving voltage level, and the second driving voltage level is set as the original first driving voltage level, so that the effect of uniform display can be further ensured after long-term operation on the basis that the gray-scale luminance curve of the pixel unit under the side view angle is close to the gray-scale luminance curve under the front view angle. Further, the preset time period is set or adjusted according to the display time of two adjacent frames, or the preset time period is set or adjusted according to the frame frequency, that is, the preset time period is different for different frame frequencies, so that it is ensured that the display panels for different display purposes have proper preset time periods, thereby enabling adaptation to the display of the display panels when adjusting the first driving voltage level and the second driving voltage level; further, the preset time period is directly proportional to the display time of two adjacent frames, or the preset time period is inversely proportional to the frame frequency of the display panel; for example, the longer the display time interval between two adjacent frames is, the longer the preset time period is, or the larger the frame frequency is, the smaller the preset time period is, and so on. Further, the driving method further includes: and presetting the preset time period. Further, the driving method further includes: presetting a variable amplitude coefficient range; and, the first driving voltage level and the second driving voltage level are mutually set once every a preset time period, including: the first driving voltage grade and the second driving voltage grade are mutually arranged once after a preset time period, and a variable amplitude coefficient is randomly obtained according to the variable amplitude coefficient range in the mutual arrangement process for adjustment; for example, each time a preset time period passes, the first driving voltage class and the second driving voltage class are updated, the first driving voltage class is set as the original second driving voltage class multiplied by a product of randomly obtaining a variable amplitude coefficient from the variable amplitude coefficient range, and the second driving voltage class is set as the original first driving voltage class multiplied by a product of randomly obtaining a variable amplitude coefficient from the variable amplitude coefficient range; for example, in the mutual arrangement process, the two variable-amplitude coefficients are arranged to be the same or different. For example, every time a preset time period passes, the first driving voltage class and the second driving voltage class are updated, a variable amplitude coefficient is randomly obtained from the variable amplitude coefficient range, the first driving voltage class is set as the product of the original second driving voltage class multiplied by the variable amplitude coefficient, and the second driving voltage class is set as the product of the original first driving voltage class multiplied by the variable amplitude coefficient. It will be appreciated that different voltage levels correspond to different drive voltages. Like this, not only make the pixel element on the basis that the grey scale luminance curve under the side viewing angle is close to the grey scale luminance curve under the front viewing angle, can also guarantee that long-term operation reaches the effect of uniform display, also be a better protection to display panel, such design does benefit to and promotes picture display quality.
The rows and columns of the embodiment of the present invention represent two mutually perpendicular arrangement directions, for example, the rows represent the longitudinal direction, and the columns represent the transverse direction; as another example, a row represents a landscape and a column represents a portrait. That is, the "row" in the embodiment of the present invention may be a "column" understood by those skilled in the art, and the "column" in the embodiment of the present invention may also be a "row" understood by those skilled in the art.
In practical applications, step S102, step S103 and step S104 may be performed simultaneously. That is, the driving voltage is applied to each sub-pixel in the display panel within the display time of one frame picture, so that in three rows of pixel units arranged consecutively in the same pixel unit group, the driving voltage polarities of two rows of adjacent pixel units are the same, and the driving voltage polarities of the first-position sub-pixel and the second-position sub-pixel in the same pixel unit are opposite, and the driving voltage levels of the first pixel unit and the second pixel unit are different. In this way, not only the voltage levels of the driving voltages of every two adjacent pixel units are different, so that the color shift problem under the side view angle can be improved, but also the number of the sub-pixels of the same color in each row (row) of the pixels of the display panel, the number of the sub-pixels of which the driving voltages are of the positive polarity high voltage level is the same as the number of the sub-pixels of which the driving voltages are of the negative polarity high voltage level, so that VcomThe voltage is not affected by parasitic capacitance, thereby ensuring the correctness of image signals and avoiding the phenomena of color cast or abnormal image quality.
In one embodiment, before applying the driving voltage to the sub-pixels of the display panel, the driving method of the display panel further includes: acquiring externally input image data, and determining gray scale data of each sub-pixel of the display panel according to the image data; in step S104, a driving voltage value corresponding to each sub-pixel is generated according to the gray scale data of each sub-pixel and the voltage level corresponding to each sub-pixel, and the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit are respectively driven by using the corresponding driving voltage values.
Referring to fig. 2 and 3 together, where P1 denotes the first pixel unit, P2 denotes the second pixel unit, and each pixel unit includes a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel as an example, R1, G1, B1 and W1 denote the red sub-pixel, the green sub-pixel, the blue sub-pixel and the white sub-pixel in the first pixel unit, and R2, G2, B2 and W2 denote the red sub-pixel, the green sub-pixel, the blue sub-pixel and the white sub-pixel in the second pixel unit, respectively. H denotes a first driving voltage level, L denotes a second driving voltage level, (i, j) denotes an ith column, a jth row, (i, j +1) denotes an ith column, a jth +1 row, (i +1, j) denotes an ith +1 column, a jth row, and so on; and vice versa.
As shown in fig. 2, according to step S101, the pixel cells in the 6 th row from the j th row to the j +5 th row are divided into two pixel cell groups, i.e., an nth pixel cell group and an n +1 th pixel cell group, so that each pixel cell group includes 3 rows of pixel cells arranged consecutively, for example, the nth pixel cell group includes the pixel cells in the j th row, the j +1 th row and the j +2 th row arranged consecutively, and the n +1 th pixel cell group includes the pixel cells in the j +3 th row, the j +4 th row and the j +5 th row arranged consecutively.
According to step S102, two adjacent rows of the three rows of the pixel units arranged in succession are driven with the same polarity. As shown in fig. 3, taking the nth pixel cell group as an example, the j +1 th row of pixel cells and the j +2 th row of pixel cells are two adjacent rows of pixel cells in the same pixel cell group, and a positive driving voltage is applied to both the R sub-pixels in the j +1 th row of pixel cells and the R sub-pixels in the j +2 th row of pixel cells; applying a driving voltage with negative polarity to the G sub-pixels in the pixel units of the j +1 th row and the G sub-pixels in the pixel units of the j +2 th row; applying a driving voltage with negative polarity to the B sub-pixels in the pixel units of the j +1 th row and the B sub-pixels in the pixel units of the j +2 th row; and applying a driving voltage with positive polarity to the W sub-pixel in the pixel unit of the j +1 th row and the W sub-pixel in the pixel unit of the j +2 th row, so that the driving voltage polarities of the sub-pixels corresponding to the positions in the pixel unit of the j +1 th row and the pixel unit of the j +2 th row are the same, namely the driving voltage polarities of the pixel unit of the j +1 th row and the pixel unit of the j +2 th row are the same.
In practical application, the driving voltages with the same polarity may also be applied to the sub-pixels corresponding to the positions in the pixel unit in the j-th row and the pixel unit in the j + 1-th row, so that the driving voltages of two adjacent rows of pixel units in three rows of the pixel units arranged consecutively in the same pixel unit group have the same polarity.
According to step S103, the first-position sub-pixel and the second-position sub-pixel in the same pixel unit are driven by the driving voltages with opposite polarities. As an embodiment, the pixel unit includes a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel arranged in sequence, where the second sub-pixel and the third sub-pixel are first position sub-pixels, and the first sub-pixel and the fourth sub-pixel are second position sub-pixels, then the step S103 includes: driving a first sub-pixel and a second sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities; driving a fourth sub-pixel in the same pixel unit by using a driving voltage with the same polarity as the first sub-pixel; and driving a third sub-pixel in the same pixel unit by using a driving voltage with the same polarity as the second sub-pixel. As shown in FIG. 3, taking the pixel P1(i, j) as an example, it includes a first sub-pixel R1(i, j), a second sub-pixel G1(i, j), a third sub-pixel B1(i, j), and a fourth sub-pixel W1(i, j), wherein the first sub-pixel R1(i, j) and the fourth sub-pixel W1(i, j) are the first position sub-pixel, the second sub-pixel G1(i, j) and the third sub-pixel B1(i, j) are the second position sub-pixel, within the display time of a certain frame, a driving voltage of positive polarity is applied to the first subpixel R1(i, j) and the fourth subpixel W1(i, j), a driving voltage of negative polarity is applied to the second sub-pixel G1(i, j) and the third sub-pixel B1(i, j), and driving voltage polarities of the first position sub-pixel and the second position sub-pixel in the same pixel unit are opposite.
According to step S104, as shown in fig. 3, the driving voltage of the H level is applied to each of the R1, G1, B1 and W1 sub-pixels in the first pixel unit P1, and the driving voltage of the L level is applied to each of the R2, G2, B2 and W2 sub-pixels in the second pixel unit P2, so that the driving voltage levels of each adjacent two pixel units are different.
With the above driving method, the number of sub-pixels to which the positive-polarity high-voltage level (H +) driving voltage is applied and the number of sub-pixels to which the negative-polarity high-voltage level (H-) driving voltage is applied can be made equal for each row (row) of pixels of the liquid crystal panel, and for example, 1 sub-pixel of R representing the positive-polarity high-voltage level (H +) and 1 sub-pixel of R representing the negative-polarity high-voltage level (H-) are provided for each row of the same color sub-pixels in fig. 3. The same number of the sub-pixels with the same high voltage level and the same positive and negative polarities of the sub-pixels of the same color can ensure that V is equalcomThe voltage is not affected by parasitic capacitance, thereby ensuring the correctness of image signals and avoiding the phenomena of color cast or abnormal image quality.
Please refer to fig. 5, which is a flowchart illustrating a driving method of a display panel according to another embodiment of the present invention, wherein the driving method 50 includes the following steps:
s501, dividing a plurality of pixel units of the display panel into a plurality of pixel unit groups, where each pixel unit group includes three rows of pixel units arranged consecutively.
And S502, driving the sub-pixels corresponding to the positions in each two adjacent pixel unit groups by using the driving voltages with the same polarity.
And S503, driving two rows of adjacent pixel units in the same pixel unit group by using the driving voltages with the same polarity.
And S504, driving the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities.
S505, a driving voltage with a preset first voltage level is applied to the sub-pixels in the first pixel unit, and a driving voltage with a preset second voltage level is applied to the sub-pixels in the second pixel unit.
Wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
As an embodiment, step S502, step S503, step S504 and step S505 may be performed simultaneously, for example, in a display time of the same frame, applying a driving voltage to each sub-pixel in the display panel, so that the driving voltage polarity of the sub-pixel corresponding to each position in each two adjacent pixel unit groups is the same, the driving voltage polarity of two rows of adjacent pixel units in the same pixel unit group is the same, the driving voltage polarity of the first position sub-pixel and the driving voltage polarity of the second position sub-pixel in the same pixel unit are opposite, and the driving voltage level of the first pixel unit is a preset first voltage level and the driving voltage level of the second pixel unit is a preset second voltage level.
For example, if the sub-pixels arranged in the first row and the first column in the first pixel unit group and the sub-pixels arranged in the first row and the first column in the second pixel unit group are sub-pixels with corresponding positions, the driving voltages with the same polarity are applied to the two sub-pixels. In this way, in the display panel, the polarities of the driving voltages of the sub-pixels corresponding to the positions in any two pixel unit groups are the same, so that the number of the positive sub-pixels and the number of the negative sub-pixels in the sub-pixels with the same high voltage level of the sub-pixels in each column of the same color in the whole display panel are ensured to be the same, and the V is ensured to becomThe correctness of the voltage and the image signal avoids the phenomena of color cast or abnormal image quality.
In one embodiment, the driving method further includes: and driving the sub-pixels in the same row by using the driving voltages with the same polarity. As shown in fig. 3, the R subpixels in the j-th row are applied with a driving voltage of positive polarity, the G subpixels in the j-th row are applied with a driving voltage of negative polarity, the B subpixels in the j-th row are applied with a driving voltage of negative polarity, and the W subpixels in the j-th row are applied with a driving voltage of positive polarity. Therefore, because the polarities of the driving voltages of the sub-pixels in the same row are the same, the difference between a plurality of voltage signals output by the same data line is kept in a small range, thereby avoiding the heating of a data driving chip or the distortion of the voltage signals and improving the display quality of each sub-pixel.
In one embodiment, the driving method further includes: and driving each first-position sub-pixel in the same row of pixel units by adopting the driving voltage with the same polarity, and driving each second-position sub-pixel in the same row of pixel units by adopting the driving voltage with the same polarity. Wherein the first position and the second position are a middle position and an edge position, respectively. For example, each pixel unit includes a first sub-pixel (e.g., R sub-pixel), a second sub-pixel (e.g., G sub-pixel), a third sub-pixel (e.g., B sub-pixel), and a fourth sub-pixel (e.g., W sub-pixel) arranged in sequence, where the first sub-pixel and the fourth sub-pixel belong to a first position sub-pixel, and the second sub-pixel and the third sub-pixel belong to a second position sub-pixel, and then the driving voltages with the same polarity are applied to the first sub-pixels and the fourth sub-pixels in the same row of pixel units, and the driving voltages with the same polarity are applied to the second sub-pixels and the third sub-pixels in the same row of pixel units. As shown in fig. 3, taking the nth pixel unit group as an example, a driving voltage with positive polarity is applied to each R sub-pixel and each W sub-pixel in the jth row of pixel units, so that the driving voltage polarity of each first-position sub-pixel in the jth row of pixel units is the same; and respectively applying a driving voltage with negative polarity to each G sub-pixel and each B sub-pixel in the pixel unit of the jth row, so that the driving voltage polarity of each second position sub-pixel in the pixel unit of the jth row is the same. Therefore, the driving voltage polarities of the sub-pixels in the same row can be the same, the difference between a plurality of voltage signals output by the same data line is kept in a small range, the heat generation or the voltage signal distortion of a data driving chip is avoided, the display quality of each sub-pixel is improved, the number of the sub-pixels with the positive polarity and the number of the sub-pixels with the negative polarity of the sub-pixels with the same color in the same column can be the same, and V is ensuredcomThe voltage is not affected by parasitic capacitance, thereby further ensuring the correctness of image signals and avoiding the phenomena of color cast or abnormal image quality.
In one embodiment, if the display panel is a liquid crystal panel, in order to protect the liquid crystal material and the electrodes and extend the lifetime of the display panel, ac driving is performed on each sub-pixel in the display panel, considering that driving the liquid crystal pixels with a dc electric field easily causes chemical reactions of the liquid crystal material and accelerates the degradation of the electrodes, thereby shortening the lifetime of the liquid crystal panel. In one embodiment, the driving method further includes: in each two adjacent frame display time, driving the same sub-pixel by adopting driving voltages with opposite polarities; that is, for the same sub-pixel, in every two adjacent frame display time, the driving voltages with different polarities are applied respectively to achieve the effect of alternating current driving. For example, after step S102, step S103, and step S104 are executed, a driving voltage having a polarity opposite to the current polarity is applied to each sub-pixel during the display time of the next frame screen. Taking the sub-pixels in the nth pixel cell group as an example, the driving voltage as shown in fig. 3 is applied to the sub-pixels in the nth pixel cell group during the display time of the mth frame, and the driving voltage as shown in fig. 4 is applied to the sub-pixels in the nth pixel cell group during the display time of the (m +1) th frame. It can be seen that the polarity of the driving voltage of the same sub-pixel changes in every two adjacent display time frames, and the level of the driving voltage remains unchanged. Therefore, each sub-pixel can be driven by alternating current, liquid crystal materials and electrodes are protected, and the service life of the liquid crystal display panel is prolonged.
In one embodiment, when driving the display panel, after the voltage level and polarity of the driving voltage are determined for each sub-pixel, the driving voltage for each sub-pixel is obtained from the image data of each sub-pixel and the corresponding driving voltage polarity and voltage level, and the driving voltage is applied to each sub-pixel through the data line.
The embodiment of the invention also provides a driving device 60 of the display panel. The display panel is provided with a plurality of pixel units distributed in a matrix manner, the pixel units comprise a plurality of first pixel units and a plurality of second pixel units, and the first pixel units and the second pixel units are adjacently arranged or are alternately arranged.
As shown in fig. 6, the driving apparatus 60 includes a grouping module 610, a first driving module 620, a second driving module 630 and a third driving module 640, wherein the grouping module 610 is configured to divide a plurality of pixel units of the display panel into a plurality of pixel unit groups, and each of the pixel unit groups includes three rows of pixel units arranged in series; the first driving module 620 is configured to drive two adjacent rows of the three rows of pixel units arranged in succession by using driving voltages with the same polarity; the second driving module 630 is configured to drive the first-position sub-pixel and the second-position sub-pixel in the same pixel unit with driving voltages having opposite polarities; the third driving module 640 is configured to drive the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit with driving voltages having different voltage levels. In this way, not only the voltage levels of the driving voltages of every two adjacent pixel units are different, so that the color shift problem under the side view angle can be improved, but also the number of the sub-pixels of the same color in each row (row) of the pixels of the display panel, the number of the sub-pixels of which the driving voltages are of the positive polarity high voltage level is the same as the number of the sub-pixels of which the driving voltages are of the negative polarity high voltage level, so that VcomThe voltage is not affected by parasitic capacitance, thereby ensuring the correctness of image signals and avoiding the phenomena of color cast or abnormal image quality.
In one embodiment, the three rows of pixel units arranged consecutively are a first position pixel unit, a second position pixel unit and a third position pixel unit in sequence according to the arrangement order; as shown in fig. 7, the first driving module 620 includes a first driving unit 621, or the first driving module 620 includes a first driving unit 621 and a second driving unit 622. The first driving unit 621 is configured to drive the second position pixel unit and the third position pixel unit with driving voltages having the same polarity. The second driving unit 622 is configured to drive the first position pixel unit and the second position pixel unit with driving voltages having opposite polarities.
In one embodiment, each pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are arranged in sequence; as shown in fig. 8, the second driving module 630 includes a third driving unit 631, a fourth driving unit 632, and a fifth driving unit 633, where the third driving unit 631 is configured to drive the first sub-pixel and the second sub-pixel in the same pixel unit with driving voltages having opposite polarities; the fourth driving unit 632 is configured to drive a fourth sub-pixel in the same pixel unit with a driving voltage having the same polarity as the first sub-pixel; the fifth driving unit 633 is used for driving the third sub-pixel in the same pixel unit with the same driving voltage as the polarity of the second sub-pixel.
Referring to fig. 9, which is a schematic structural diagram of a driving apparatus of a display panel according to another embodiment of the present invention, the driving apparatus 90 includes a grouping module 910, a first driving module 920, a second driving module 930, a third driving module 940 and a fourth driving module 950.
The grouping module 910 is configured to divide a plurality of pixel units of the display panel into a plurality of pixel unit groups, where each pixel unit group includes three adjacent rows of pixel units; the first driving module 920 is configured to drive two adjacent rows of the three rows of pixel units arranged consecutively by using driving voltages with the same polarity; the second driving module 930 is configured to drive the first-position sub-pixel and the second-position sub-pixel in the same pixel unit with driving voltages with opposite polarities; the third driving module 940 is configured to apply a driving voltage with a preset first voltage level to the sub-pixels in the first pixel unit, and apply a driving voltage with a preset second voltage level to the sub-pixels in the second pixel unit; the fourth driving module 950 is configured to drive the sub-pixels corresponding to the positions in each two adjacent pixel unit groups by using the driving voltages with the same polarity; wherein the first pixel unit and the second pixel unit are adjacently arranged in the display panel.
In one embodiment, the driving device 60 further includes a fifth driving module, configured to drive the sub-pixels in the same row with the same polarity. Therefore, because the polarities of the driving voltages of the sub-pixels in the same row are the same, the difference between a plurality of voltage signals output by the same data line is kept in a small range, thereby avoiding the heating of a data driving chip or the distortion of the voltage signals and improving the display quality of each sub-pixel.
In one embodiment, the driving device 60 further includes a sixth driving module, configured to drive each first-position sub-pixel in the same row of pixel units with a driving voltage having the same polarity; and driving each second-position sub-pixel in the same row of pixel units by using the driving voltage with the same polarity. Therefore, the driving voltage polarities of the sub-pixels in the same row can be the same, the difference between a plurality of voltage signals output by the same data line is kept in a small range, the heat generation or the voltage signal distortion of a data driving chip is avoided, the display quality of each sub-pixel is improved, the number of the sub-pixels with the positive polarity and the number of the sub-pixels with the negative polarity of the sub-pixels with the same color in the same column can be the same, and V is ensuredcomThe voltage is not affected by parasitic capacitance, thereby further ensuring the correctness of image signals and avoiding the phenomena of color cast or abnormal image quality.
In one embodiment, the driving apparatus further includes a seventh driving module, configured to drive the same sub-pixel with driving voltages with opposite polarities in each two adjacent frame display times. Therefore, each sub-pixel can be driven by alternating current, liquid crystal materials and electrodes are protected, and the service life of the liquid crystal display panel is prolonged.
In one embodiment, the driving device further comprises an mutual arrangement unit, and the mutual arrangement unit is connected with the driving module; the mutual arranging unit is used for arranging the first driving voltage level and the second driving voltage level mutually once every preset time period, that is, the interchanging unit is configured to interchange the first driving voltage level and the second driving voltage level once every lapse of a preset time period, that is, the interchanging unit is configured to update the first driving voltage level and the second driving voltage level every time a period of time elapses, or every time a preset time period elapses, to set the first driving voltage level to an original second driving voltage level, and the second driving voltage level is set to the original first driving voltage level, so that, the effect of uniform display can be further ensured after long-term operation on the basis that the gray scale brightness curve of the pixel unit under the side viewing angle is close to the gray scale brightness curve under the front viewing angle. Further, the preset time period is set or adjusted according to the display time of two adjacent frames, or the preset time period is set or adjusted according to the frame frequency, further, the preset time period is directly proportional to the display time of two adjacent frames, or the preset time period is inversely proportional to the frame frequency of the display panel; for example, the longer the display time interval between two adjacent frames is, the longer the preset time period is, or the larger the frame frequency is, the smaller the preset time period is, and so on. That is, the preset time period is different for different frame rates, so that it is ensured that the display panels for different display purposes have suitable preset time periods, thereby enabling adaptation to the display of the display panel when adjusting the first and second driving voltage levels. Further, the mutual setting unit is further configured to preset the preset time period. Further, the mutual disposition unit is further configured to: presetting a variable amplitude coefficient range; and, mutually setting the first driving voltage level and the second driving voltage level once every lapse of a preset time period, comprising: mutually arranging the first driving voltage grade and the second driving voltage grade once after a preset time period, and randomly acquiring a variable amplitude coefficient according to the variable amplitude coefficient range in the mutual arrangement process for adjustment; for example, each time a preset time period passes, the first driving voltage class and the second driving voltage class are updated, the first driving voltage class is set as the original second driving voltage class multiplied by a product of randomly obtaining a variable amplitude coefficient from the variable amplitude coefficient range, and the second driving voltage class is set as the original first driving voltage class multiplied by a product of randomly obtaining a variable amplitude coefficient from the variable amplitude coefficient range; for example, the mutual disposition unit is also used for arranging the two amplitude coefficients in a mutual disposition process in an identical or different way. For example, every time a preset time period passes, the first driving voltage class and the second driving voltage class are updated, a variable amplitude coefficient is randomly obtained from the variable amplitude coefficient range, the first driving voltage class is set as the product of the original second driving voltage class multiplied by the variable amplitude coefficient, and the second driving voltage class is set as the product of the original first driving voltage class multiplied by the variable amplitude coefficient. It will be appreciated that different voltage levels correspond to different drive voltages. Like this, not only make the pixel element on the basis that the grey scale luminance curve under the side viewing angle is close to the grey scale luminance curve under the front viewing angle, can also guarantee that long-term operation reaches the effect of uniform display, also be a better protection to display panel, such design does benefit to and promotes picture display quality.
Wherein "row" and "column" of the embodiment of the present invention indicate two arrangement directions perpendicular to each other, for example, "row" indicates a longitudinal direction, and "column" indicates a transverse direction; as another example, "rows" represent the horizontal direction and "columns" represent the vertical direction. That is, the "row" in the embodiment of the present invention may be a "column" understood by those skilled in the art, and the "column" in the embodiment of the present invention may also be a "row" understood by those skilled in the art.
Another embodiment of the present invention is a driving apparatus for a display panel, which employs the driving method for a display panel described in any of the above embodiments; for example, a driving apparatus of a display panel is implemented by using the driving method of the display panel according to any one of the embodiments; for another example, a driving apparatus of a display panel has functional modules corresponding to the driving method of the display panel according to any of the above embodiments.
The driving method and driving apparatus of the display panel provided by the present invention can be applied to, for example, a liquid crystal display panel, an OLED (Organic Light-Emitting Diode) display panel, a QLED (Quantum dot Light-Emitting Diode) display panel, a curved display panel, a flexible display panel, or the like. For example, the display panel of the liquid crystal display may be a TN (Twisted Nematic) liquid crystal display panel, an IPS (In-Plane Switching) liquid crystal display panel, a PLS (Plane to Line Switching) liquid crystal display panel, an MVA (Multi-domain Vertical Alignment) liquid crystal display panel, or the like. The display panel can be driven by a logic board of a full-high-definition display panel. That is, the driving method and the driving apparatus of the display panel can be implemented by using a logic board of a full-high-definition display panel.
The present invention also discloses a display device, as shown in fig. 10, the display device 100 includes a display panel 110 and a driving device 120. The driving device 120 is the driving device 60 of the display panel or the driving device 90 of the display panel according to any of the above embodiments. The driving device 120 is configured to apply a driving voltage to each sub-pixel in the display panel 20 to drive the display panel to display a preset image.
For example, the display device is a liquid crystal display device, an OLED display device or a QLED display device, a curved display device, a flexible display device, or the like. For example, the liquid crystal display device may be a TN liquid crystal display, an IPS liquid crystal display, a PLS liquid crystal display, an MVA liquid crystal display, or the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A driving method of a display panel, the display panel having a plurality of pixel units distributed in a matrix, the plurality of pixel units including a plurality of first pixel units and a plurality of second pixel units, the first pixel units and the second pixel units being alternately arranged, the method comprising:
dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged;
driving two adjacent rows of pixel units in each continuously arranged three rows of pixel units in the same pixel unit group by using driving voltages with the same polarity, wherein the two pixel units have the same polarity, namely the polarities of sub-pixels corresponding to the positions in the two pixel units are the same, and driving the other row of pixel units in each continuously arranged three rows of pixel units in the same pixel unit group by using driving voltages with opposite polarities;
driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities, wherein the first position and the second position are respectively a middle position and an edge position;
driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels;
the first pixel unit and the second pixel unit are adjacently arranged in the display panel, and the arrangement modes of the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit are adjacently arranged on each column.
2. The driving method according to claim 1, characterized in that:
the three rows of continuously arranged pixel units are sequentially a first position pixel unit, a second position pixel unit and a third position pixel unit according to the arrangement sequence;
the driving of two adjacent rows of pixel units in the three rows of continuously arranged pixel units by using the driving voltages with the same polarity comprises the following steps:
and respectively driving the second position pixel unit and the third position pixel unit by adopting driving voltages with the same polarity.
3. The driving method according to claim 2, characterized in that:
the driving voltage with the same polarity is used for driving two adjacent pixel units in the three rows of continuously arranged pixel units, and the method further comprises the following steps:
and respectively driving the first position pixel unit and the second position pixel unit by adopting driving voltages with opposite polarities.
4. The driving method according to claim 1, characterized in that:
each pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged;
the driving of the first position sub-pixel and the second position sub-pixel in the same pixel unit by adopting the driving voltages with opposite polarities comprises the following steps:
driving a first sub-pixel and a second sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities;
driving a fourth sub-pixel in the same pixel unit by using a driving voltage with the same polarity as the first sub-pixel;
and driving a third sub-pixel in the same pixel unit by using a driving voltage with the same polarity as the second sub-pixel.
5. The driving method according to claim 1, wherein the driving method further comprises:
and in every two adjacent frame display time, driving the same sub-pixel by adopting driving voltages with opposite polarities.
6. A driving device of a display panel, the display panel having a plurality of pixel units distributed in a matrix, the plurality of pixel units including a plurality of first pixel units and a plurality of second pixel units, the first pixel units and the second pixel units being alternately arranged, the driving device comprising:
the grouping module is used for dividing a plurality of pixel units of the display panel into a plurality of pixel unit groups, and each pixel unit group comprises three rows of adjacent pixel units;
the first driving module is used for driving two rows of adjacent pixel units in each continuously arranged three rows of pixel units in the same pixel unit group by using driving voltages with the same polarity, the two pixel units with the same polarity mean that the polarities of sub-pixels corresponding to the positions in the two pixel units are the same, and driving the other row of pixel units in each continuously arranged three rows of pixel units in the same pixel unit group by using driving voltages with opposite polarities;
the second driving module is used for driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities, wherein the first position and the second position are respectively a middle position and an edge position;
the third driving module is used for respectively driving the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit by adopting driving voltages with different voltage levels;
the first pixel unit and the second pixel unit are adjacently arranged in the display panel, and the arrangement modes of the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit are adjacently arranged on each column.
7. The drive device according to claim 6,
the three rows of continuously arranged pixel units are sequentially a first position pixel unit, a second position pixel unit and a third position pixel unit according to the arrangement sequence;
the first driving module includes:
and the first driving unit is used for respectively driving the second position pixel unit and the third position pixel unit by adopting driving voltages with the same polarity.
8. The drive of claim 7, wherein the first drive module further comprises:
and the second driving unit is used for driving the first position pixel unit and the second position pixel unit respectively by adopting driving voltages with opposite polarities.
9. The drive device according to claim 6, characterized in that:
each pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged;
the second driving module includes:
the third driving unit is used for driving the first sub-pixel and the second sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities;
the fourth driving unit is used for driving a fourth sub-pixel in the same pixel unit by adopting a driving voltage with the same polarity as the first sub-pixel;
and the fifth driving unit is used for driving the third sub-pixel in the same pixel unit by adopting the driving voltage with the same polarity as the second sub-pixel.
10. A method of driving a display panel, comprising:
dividing a plurality of pixel units of a display panel into a plurality of pixel unit groups, wherein each pixel unit group comprises three rows of pixel units which are continuously arranged;
driving the sub-pixels corresponding to the positions in each two adjacent pixel unit groups by adopting driving voltages with the same polarity;
driving two rows of adjacent pixel units in each continuously arranged three rows of pixel units in the same pixel unit group by using driving voltages with the same polarity, wherein the same polarity of the two pixel units means that the polarities of sub-pixels corresponding to the positions in the two pixel units are the same;
driving a first position sub-pixel and a second position sub-pixel in the same pixel unit by adopting driving voltages with opposite polarities;
applying a driving voltage with a preset first voltage level to the sub-pixels in the first pixel unit;
and applying a driving voltage with a preset second voltage level to the sub-pixels in the second pixel unit;
the first pixel unit and the second pixel unit are adjacently arranged in the display panel, and the arrangement modes of the sub-pixels in the first pixel unit and the sub-pixels in the second pixel unit are adjacently arranged on each column.
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