CN110827733B - Display method and display device for display panel - Google Patents
Display method and display device for display panel Download PDFInfo
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- CN110827733B CN110827733B CN201810889323.9A CN201810889323A CN110827733B CN 110827733 B CN110827733 B CN 110827733B CN 201810889323 A CN201810889323 A CN 201810889323A CN 110827733 B CN110827733 B CN 110827733B
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000002123 temporal effect Effects 0.000 claims abstract description 12
- 230000007547 defect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 101150046160 POL1 gene Proteins 0.000 description 5
- 101100117436 Thermus aquaticus polA gene Proteins 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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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
- G09G3/2003—Display of colours
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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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
- G09G3/3607—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
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- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application relates to a display method and a display device for a display panel. The display method comprises the following steps: receiving image data to generate an initial gray value and a representative polarity corresponding to each color sub-pixel; generating a spatial gray correction value corresponding to each color sub-pixel according to the initial gray value and the representative polarity corresponding to each color sub-pixel by using the spatial compensation lookup table; generating a time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using the time compensation lookup table; and driving the corresponding plurality of color sub-pixels with a plurality of voltages corresponding to the plurality of corrected gray values, respectively, wherein the corrected gray value corresponding to each color sub-pixel is a sum of the initial gray value, the spatial gray correction value and the temporal gray correction value.
Description
Technical Field
The present disclosure relates to a display method for a display panel, and more particularly, to a display method and a display apparatus for a display panel, which can improve display quality.
Background
Because of the characteristics of the liquid crystal, when a user looks at the liquid crystal display panel at the side, the color or brightness of the display is often different from that of the liquid crystal display panel when the user looks at the liquid crystal display panel, that is, color shift (color shift) is generated. In the conventional improvement, a low color shift (low color shift) technique is adopted, for example, the representative polarities of every two adjacent pixels are divided into a positive one and a negative one, and a high pixel voltage and a low pixel voltage are correspondingly generated, so that two areas of a bright area and a dark area are displayed between the pixels, thereby improving the color shift phenomenon.
However, for the lcd panel using the low color shift technology, when the lcd panel is driven by dot inversion (dot inversion), the representative polarities of every two adjacent pixels are changed in different frame periods, so that the common voltage of the pixels may deviate due to parasitic capacitance effect, which may cause a defect of flicker (flicker) in the visual sense of the user.
Disclosure of Invention
The present application is directed to a display method for a display panel, which uses a spatial compensation look-up table and/or a temporal compensation look-up table to compensate for the offset of a common voltage, thereby improving the defect of flicker of a picture of the display panel.
According to the above object of the present application, there is provided a display method for a display panel comprising a plurality of pixels, each pixel comprising at least one color sub-pixel, the display method comprising the steps of, in a frame period: receiving image data through an initial gray value generation module to generate an initial gray value corresponding to each color sub-pixel; generating a representative polarity corresponding to each color sub-pixel through a representative polarity generating module; generating a spatial gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using a spatial compensation lookup table through a spatial gray-scale correction value generation module; and driving, by the data driving module, a corresponding plurality of color sub-pixels with a plurality of voltages corresponding to the plurality of corrected gray values, respectively, wherein the corrected gray value corresponding to each color sub-pixel is a sum of the initial gray value and the spatial gray correction value. Wherein the spatial gray correction value of one of the plurality of color sub-pixels is an initial gray value associated with the one of the plurality of color sub-pixels, a representative polarity, and a plurality of initial gray values and a plurality of representative polarities of a plurality of color sub-pixels adjacent to the one of the plurality of color sub-pixels.
In some embodiments, when the initial gray value corresponding to the colored sub-pixel is not found in the spatial compensation look-up table, an interpolation method is used to generate the spatial gray correction value corresponding to the colored sub-pixel.
In some embodiments, the display panel is driven in a dot inversion manner.
According to the above object of the present application, there is further provided a display method for a display panel, the display panel comprising a plurality of pixels, each pixel comprising at least one color sub-pixel, the display method comprising the steps of, in a first frame period: receiving image data through an initial gray value generation module to generate an initial gray value corresponding to each color sub-pixel; generating a representative polarity corresponding to each color sub-pixel through a representative polarity generating module; generating, by the time gray-scale correction value generation module, a time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using the time compensation lookup table; and driving, by the data driving module, a corresponding plurality of color sub-pixels with a plurality of voltages corresponding to the plurality of corrected gray values, respectively, wherein the corrected gray value corresponding to each color sub-pixel is a sum of the initial gray value and the time gray correction value. The time gray scale correction value corresponding to one of the plurality of color sub-pixels in the first frame period is associated with the initial gray scale value, the representative polarity corresponding to the one of the plurality of color sub-pixels in the first frame period, and the initial gray scale value, the representative polarity corresponding to the one of the plurality of color sub-pixels in the second frame period, wherein the first frame period is the next frame period of the second frame period.
In some embodiments, when the initial gray value corresponding to the colored sub-pixel is not found in the time compensation look-up table, an interpolation method is used to generate the time gray correction value corresponding to the colored sub-pixel.
In some embodiments, the display panel is driven in a dot inversion manner.
According to the above object of the present application, there is further provided a display method for a display panel, the display panel comprising a plurality of pixels, each pixel comprising at least one color sub-pixel, the display method comprising the steps of, in a first frame period: receiving image data to generate an initial gray value and a representative polarity corresponding to each color sub-pixel; generating a spatial gray correction value corresponding to each color sub-pixel according to the initial gray value and the representative polarity corresponding to each color sub-pixel by using the spatial compensation lookup table; generating a time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using the time compensation lookup table; and driving the corresponding plurality of color sub-pixels with a plurality of voltages corresponding to the plurality of corrected gray values, respectively, wherein the corrected gray value corresponding to each color sub-pixel is a sum of the initial gray value, the spatial gray correction value and the temporal gray correction value. Wherein the spatial gray correction value of one of the plurality of color sub-pixels is an initial gray value associated with the one of the plurality of color sub-pixels, a representative polarity, and a plurality of initial gray values of a plurality of color sub-pixels adjacent to the one of the plurality of color sub-pixels, a plurality of representative polarities. The time gray scale correction value corresponding to one color sub-pixel in the plurality of color sub-pixels in the first frame period is associated with the initial gray scale value, the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the first frame period, and the initial gray scale value, the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the second frame period, wherein the first frame period is the next frame period of the second frame period.
In some embodiments, when the initial gray value corresponding to the colored sub-pixel is not found in the spatial compensation look-up table, an interpolation method is used to generate a spatial gray correction value corresponding to the colored sub-pixel; when the initial gray value corresponding to the color sub-pixel is not found in the time compensation lookup table, an interpolation method is adopted to generate a time gray correction value corresponding to the color sub-pixel.
In some embodiments, the display panel is driven in a dot inversion manner.
According to the above object of the present application, there is also provided a display device comprising: the display device comprises a time schedule controller, a data driving module and a display panel. The timing controller includes: an initial gray value generation module, a representative polarity generation module, and a spatial gray correction value generation module. The initial gray value generation module is used for receiving the image data in the frame period to generate an initial gray value corresponding to each of a plurality of color sub-pixels corresponding to the image data. The representative polarity generating module is used for generating a representative polarity corresponding to each color sub-pixel. The spatial gray-scale correction value generation module is used for generating a spatial gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by utilizing the spatial compensation lookup table in the frame period. The data driving module is used for driving a plurality of corresponding color sub-pixels respectively by a plurality of voltages corresponding to a plurality of corrected gray values in a frame period, wherein the corrected gray value corresponding to each color sub-pixel is the sum of the initial gray value and the spatial gray correction value. The display panel comprises a plurality of pixels, and each pixel comprises at least one color sub-pixel in the plurality of color sub-pixels. The spatial gray correction value of one of the plurality of color sub-pixels is an initial gray value associated with the one of the plurality of color sub-pixels, a representative polarity, and a plurality of initial gray values of a plurality of color sub-pixels adjacent to the one of the plurality of color sub-pixels.
In some embodiments, when the initial gray value corresponding to the colored sub-pixel is not found in the spatial compensation look-up table, an interpolation method is used to generate the spatial gray correction value corresponding to the colored sub-pixel.
In some embodiments, the display panel is driven in a dot inversion manner.
According to the above object of the present application, there is also provided a display device comprising: the display device comprises a time schedule controller, a data driving module and a display panel. The timing controller includes: an initial gray value generation module, a representative polarity generation module, and a time gray correction value generation module. The initial gray value generation module is used for receiving the image data in the first frame period so as to generate an initial gray value corresponding to each color sub-pixel in the plurality of color sub-pixels corresponding to the image data. The representative polarity generating module is used for generating a representative polarity corresponding to each color sub-pixel. The time gray-scale correction value generation module is used for generating the time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by utilizing the time compensation lookup table in the first frame period. The data driving module is used for driving a plurality of corresponding color sub-pixels respectively with a plurality of voltages corresponding to a plurality of corrected gray values in a first frame period, wherein the corrected gray value corresponding to each color sub-pixel is the sum of the initial gray value and the time gray correction value. The display panel comprises a plurality of pixels, and each pixel comprises at least one color sub-pixel in the plurality of color sub-pixels. The time gray correction value corresponding to one color sub-pixel in the plurality of color sub-pixels in the first frame period is associated with the initial gray value and the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the first frame period, and the initial gray value and the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the second frame period, wherein the first frame period is the next frame period of the second frame period.
In some embodiments, when the initial gray value corresponding to the colored sub-pixel is not found in the time compensation look-up table, an interpolation method is used to generate the time gray correction value corresponding to the colored sub-pixel.
In some embodiments, the display panel is driven in a dot inversion manner.
According to the above object of the present application, there is also provided a display device comprising: the display device comprises a time schedule controller, a data driving module and a display panel. The timing controller includes: an initial gray value generation module, a representative polarity generation module, a spatial gray correction value generation module, and a temporal gray correction value generation module. The initial gray value generation module is used for receiving the image data in the first frame period so as to generate an initial gray value corresponding to each color sub-pixel in the plurality of color sub-pixels corresponding to the image data. The representative polarity generating module is used for generating a representative polarity corresponding to each color sub-pixel. The spatial gray-scale correction value generation module is used for generating a spatial gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by utilizing the spatial compensation lookup table in the first frame period. The time gray-scale correction value generation module is used for generating the time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by utilizing the time compensation lookup table in the first frame period. The data driving module is used for driving a plurality of corresponding color sub-pixels respectively with a plurality of voltages corresponding to a plurality of corrected gray values in a first frame period, wherein the corrected gray value corresponding to each color sub-pixel is the sum of an initial gray value, a spatial gray correction value and a time gray correction value. The display panel comprises a plurality of pixels, and each pixel comprises at least one color sub-pixel in the plurality of color sub-pixels. The spatial gray correction value of one of the plurality of color sub-pixels is an initial gray value associated with the one of the plurality of color sub-pixels, a representative polarity, and a plurality of initial gray values of a plurality of color sub-pixels adjacent to the one of the plurality of color sub-pixels. The time gray scale correction value corresponding to one color sub-pixel in the plurality of color sub-pixels in the first frame period is associated with the initial gray scale value, the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the first frame period, and the initial gray scale value, the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the second frame period, wherein the first frame period is the next frame period of the second frame period.
In some embodiments, when the initial gray value corresponding to the colored sub-pixel is not found in the spatial compensation look-up table, an interpolation method is used to generate a spatial gray correction value corresponding to the colored sub-pixel; when the initial gray value corresponding to the color sub-pixel is not found in the time compensation lookup table, an interpolation method is adopted to generate a time gray correction value corresponding to the color sub-pixel.
In some embodiments, the display panel is driven in a dot inversion manner.
In order to make the above features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.
Brief description of the drawings
The disclosed embodiments of the application will be better understood from the following detailed description taken in conjunction with the accompanying drawings. It should be noted that, according to standard practice in the industry, the features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion.
Fig. 1 shows a system block diagram of a display device according to a first embodiment of the application.
Fig. 2 shows a flowchart of a display method for a display panel according to a first embodiment of the present application.
Fig. 3 is a schematic diagram of a spatial compensation look-up table according to a first embodiment of the application.
Fig. 4 shows a system block diagram of a display device according to a second embodiment of the application.
Fig. 5 shows a flowchart of a display method for a display panel according to a second embodiment of the present application.
Fig. 6 is a schematic diagram of a time compensation look-up table according to a second embodiment of the present application.
Fig. 7 shows a system block diagram of a display device according to a third embodiment of the application.
Fig. 8 shows a flowchart of a display method for a display panel according to a third embodiment of the present application.
Detailed Description
Embodiments of the present application are discussed in detail below. However, it is to be understood that the embodiments provide many applicable concepts that can be embodied in a wide variety of specific contexts. The embodiments discussed and disclosed are merely illustrative and are not intended to limit the scope of the application. The terms "first," "second," …, and the like, as used herein, do not denote a particular order or sequence, but rather are merely used to distinguish one element or operation from another in the same technical terms.
Fig. 1 shows a system block diagram of a display device 100 according to a first embodiment of the application. The display device 100 includes a timing controller 120 (Timing Controller, T-CON), a data driving module 140 and a display panel 160. The timing controller 120 includes an initial gray value generating module 122, a representative polarity generating module 124, a spatial gray correction value generating module 126, and an operation module 129. The display panel 160 includes a plurality of pixels, each of which includes at least one color sub-pixel, such as a red sub-pixel, a green sub-pixel, and a blue sub-pixel. Fig. 2 shows a flowchart of a display method 1000 for a display panel 160 according to a first embodiment of the application, the display method 1000 comprising steps 1100-1300.
It should be noted that the display panel 160 is driven in a dot inversion manner by adopting a low color shift technology, so that the display panel 160 may have a flicker defect. In the first embodiment of the present application, the display apparatus 100 and the display method 1000 for the display panel 160 are used to compensate the shift of the common voltage, thereby improving the defect of the flicker of the display panel 160.
Referring to fig. 1 and fig. 2 together, in step 1100, the initial gray value generating module 122 is configured to receive image data in a frame period to generate an initial gray value corresponding to each color sub-pixel, and the representative polarity generating module 124 is configured to generate a representative polarity corresponding to each color sub-pixel. It should be noted that, since the display panel 160 adopts the low color shift technology, the initial gray value and the representative polarity generated by the initial gray value generating module 122 and the representative polarity generating module 124 are used for improving the color shift problem of the display panel 160.
In step 1200, the spatial gray-scale correction value generating module 126 is configured to generate the spatial gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using the spatial compensation look-up table in a frame period. FIG. 3 is a diagram of a spatially compensated look-up table according to a first embodiment of the present application, wherein a header field is used for comparing initial gray values corresponding to color sub-pixels and a header row is used for comparing representative polarities corresponding to color sub-pixels. For example, in the case of referring to the spatial compensation look-up table shown in fig. 3, if the initial gray-scale value corresponding to a certain color sub-pixel is 128 and the representative polarity is POL1-, the generated spatial gray-scale correction value corresponding to the color sub-pixel is 3.
It should be noted that, in the first embodiment of the present application, when the initial gray value corresponding to the color sub-pixel is not found in the spatial compensation look-up table, the interpolation method is used to generate the spatial gray-scale correction value corresponding to the color sub-pixel. For example, in the case of referring to the spatial compensation look-up table shown in fig. 3, if the initial gray value corresponding to a certain color sub-pixel is 150 and the representative polarity is POL1+, since no initial gray value of 150 is found in the title column of the spatial compensation look-up table shown in fig. 3, the spatial gray correction value corresponding to the generated color sub-pixel is interpolated by interpolation, that is, by interpolation using the initial gray values of 128 and 160 and the spatial gray correction values corresponding to the representative polarity of POL1+ of 2 and 3, respectively, and rounding the interpolated result to obtain that the spatial gray correction value corresponding to the generated color sub-pixel is 3.
Referring to fig. 1 and 2 again, in step 1300, the data driving module 140 is configured to drive a plurality of color sub-pixels corresponding to the display panel 160 with a plurality of voltages corresponding to a plurality of corrected gray levels in a frame period, wherein the corrected gray level corresponding to each color sub-pixel is a sum of the initial gray level and the spatial gray level correction value. For example, in the case of referring to the spatial compensation look-up table shown in fig. 3, if the initial gray value corresponding to a certain color sub-pixel is 128 and the representative polarity is POL1-, the generated corrected gray value corresponding to the color sub-pixel is the sum of the initial gray value 128 and the spatial gray correction value 3, that is, 131. It should be noted that the operation module 129 located before the data driving module 140 is further configured to perform data operation processing, and transmit the data after the operation processing to the data driving module 140.
It should be noted that, in the first embodiment of the present application, the spatial gradation correction value of one of the plurality of color sub-pixels is the initial gradation value, the representative polarity associated with the one of the plurality of color sub-pixels, and the plurality of initial gradation values, the plurality of representative polarities of the plurality of color sub-pixels adjacent to the one of the plurality of color sub-pixels. In other words, the spatial gray correction value compensates the initial gray value of the corresponding color sub-pixel with respect to the spatial relationship by using the initial gray value and the representative polarity of the corresponding color sub-pixel and the initial gray value and the representative polarity of the adjacent color sub-pixel, so as to improve the defect of flicker (flicker) of the display panel 160.
Fig. 4 shows a system block diagram of a display device 200 according to a second embodiment of the application. The display device 200 includes a timing controller 220, a data driving module 140, and a display panel 160. The timing controller 220 includes an initial gray value generating module 122, a representative polarity generating module 124, a time gray correction value generating module 128, and an operation module 129. The display panel 160 includes a plurality of pixels, each of which includes at least one color sub-pixel, such as a red sub-pixel, a green sub-pixel, and a blue sub-pixel. Fig. 5 shows a flow chart of a display method 2000 for the display panel 160 according to a second embodiment of the application, the display method 2000 comprising steps 2100 to 2300.
It should be noted that, the display panel 160 is driven by the low color shift technology and in a dot inversion manner, so that the display panel 160 may have a flicker defect. In the second embodiment of the present application, the display apparatus 200 and the display method 2000 for the display panel 160 are used to compensate the shift of the common voltage, so as to improve the defect of flicker of the display panel 160.
Referring to fig. 4 and fig. 5 together, in step 2100, the initial gray level generating module 122 is configured to receive image data in a first frame period to generate an initial gray level corresponding to each color sub-pixel, and the representative polarity generating module 124 is configured to generate a representative polarity corresponding to each color sub-pixel. It should be noted that, since the display panel 160 adopts the low color shift technology, the initial gray value and the representative polarity generated by the initial gray value generating module 122 and the representative polarity generating module 124 are used for improving the color shift problem of the display panel 160.
In step 2200, the time gray-scale correction value generating module 128 is configured to generate the time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using the time compensation look-up table in the first frame period. FIG. 6 is a diagram of a time compensation look-up table according to a second embodiment of the present application, wherein a title bar is used for comparing initial gray values corresponding to color sub-pixels, and a title line is used for comparing representative polarities corresponding to color sub-pixels. For example, in the case of referring to the time compensation look-up table shown in fig. 6, if the initial gray-scale value corresponding to a certain color sub-pixel is 128 and the representative polarity is POL1-, the generated time gray-scale correction value corresponding to the color sub-pixel is-3.
It should be noted that, in the second embodiment of the present application, when the initial gray value corresponding to the color sub-pixel is not found in the time compensation look-up table, the interpolation method is used to generate the time gray-scale correction value corresponding to the color sub-pixel. For example, in the case of referring to the time compensation look-up table shown in fig. 6, if the initial gray value corresponding to a certain color sub-pixel is 150 and the representative polarity is POL1+, since no initial gray value of 150 is found in the title column of the time compensation look-up table shown in fig. 6, the generated time gray-scale correction value corresponding to the color sub-pixel is interpolated by interpolation, that is, by interpolation with initial gray-scale values of 128 and 160 and the time gray-scale correction value corresponding to the representative polarity is POL1+ of 3 and 4, respectively, and rounding the interpolated result to obtain that the generated time gray-scale correction value corresponding to the color sub-pixel is 4.
Referring to fig. 4 and fig. 5 again, in step 2300, the data driving module 140 is configured to drive a plurality of color sub-pixels corresponding to the display panel 160 with a plurality of voltages corresponding to a plurality of corrected gray values in a first frame period, wherein the corrected gray value corresponding to each color sub-pixel is a sum of the initial gray value and the time gray correction value. For example, in the case of referring to the spatial compensation look-up table shown in fig. 6, if the initial gray value corresponding to a certain color sub-pixel is 128 and the representative polarity is POL1-, the generated corrected gray value corresponding to the color sub-pixel is the sum of the initial gray value 128 and the time gray correction value-3, that is, 125. It should be noted that the operation module 129 located before the data driving module 140 is further configured to perform data operation processing, and transmit the data after the operation processing to the data driving module 140.
It should be noted that, in the second embodiment of the present application, the time gray-scale correction value corresponding to the first frame period of one of the plurality of color sub-pixels is associated with the initial gray-scale value, the representative polarity, and the initial gray-scale value, the representative polarity, corresponding to the second frame period of the one of the plurality of color sub-pixels, wherein the first frame period is the next frame period of the second frame period. In other words, the time gray scale correction value compensates the initial gray scale value of the corresponding color sub-pixel with respect to time by using the initial gray scale value and the representative polarity of the corresponding color sub-pixel in the current frame period and the initial gray scale value and the representative polarity of the previous frame period, thereby improving the flicker defect of the display panel 160.
Fig. 7 shows a system block diagram of a display device 300 according to a third embodiment of the present disclosure. The display device 300 includes a timing controller 320, a data driving module 140, and a display panel 160. The timing controller 320 includes an initial gray value generating module 122, a representative polarity generating module 124, a spatial gray correction value generating module 126, a temporal gray correction value generating module 128, and an operation module 129. The display panel 160 includes a plurality of pixels, each of which includes at least one color sub-pixel, such as a red sub-pixel, a green sub-pixel, and a blue sub-pixel. Fig. 6 shows a flowchart of a display method 3000 for a display panel 160 according to a third embodiment of the present application, the display method 3000 comprising steps 3100 to 3400.
It should be noted that, the display panel 160 is driven by the low color shift technology and in a dot inversion manner, so that the display panel 160 may have a flicker defect. In the third embodiment of the present application, the display apparatus 300 and the display method 3000 for the display panel 160 are used to compensate the shift of the common voltage, so as to improve the defect of the flicker of the display panel 160.
Referring to fig. 7 and 8 together, in step 3100, the initial gray value generating module 122 is configured to receive image data in a first frame period to generate an initial gray value corresponding to each color sub-pixel, and the representative polarity generating module 124 is configured to generate a representative polarity corresponding to each color sub-pixel. It should be noted that, since the display panel 160 adopts the low color shift technology, the initial gray value and the representative polarity generated by the initial gray value generating module 122 and the representative polarity generating module 124 are used for improving the color shift problem of the display panel 160.
In step 3200, the spatial gray-scale correction value generating module 126 is configured to generate the spatial gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using the spatial compensation look-up table in the first frame period.
In step 3300, the time gray-scale correction value generating module 128 is configured to generate the time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using the time compensation look-up table in the first frame period.
It should be noted that, in the third embodiment of the present application, when the initial gray value corresponding to the color sub-pixel is not found in the spatial compensation look-up table, the interpolation method is used to generate the spatial gray-scale correction value corresponding to the color sub-pixel. It should be noted that, in the third embodiment of the present application, when the initial gray-scale value corresponding to the color sub-pixel is not found in the time compensation look-up table, the interpolation method is used to generate the time gray-scale correction value corresponding to the color sub-pixel.
Referring to fig. 7 and 8 again, in step 3400, the data driving module 140 is configured to drive a plurality of color sub-pixels corresponding to the display panel 160 with a plurality of voltages corresponding to a plurality of corrected gray levels in a first frame period, wherein the corrected gray level corresponding to each color sub-pixel is a sum of an initial gray level, a spatial gray level correction value and a temporal gray level correction value. For example, in the case of referring to the time compensation lookup table shown in fig. 3 and the space compensation lookup table shown in fig. 6, if the initial gray value corresponding to a certain color sub-pixel is 128 and the representative polarity is POL1+, the generated corrected gray value corresponding to the color sub-pixel is the sum of the initial gray value 128, the space gray correction value 2 and the time gray correction value 3, that is, 133. It should be noted that the operation module 129 located before the data driving module 140 is further configured to perform data operation processing, and transmit the data after the operation processing to the data driving module 140.
It should be noted that, in the third embodiment of the present disclosure, the spatial gray-scale correction value of one color sub-pixel of the plurality of color sub-pixels is an initial gray-scale value, a representative polarity associated with the one color sub-pixel of the plurality of color sub-pixels, and a plurality of initial gray-scale values, a plurality of representative polarities of a plurality of color sub-pixels adjacent to the one color sub-pixel of the plurality of color sub-pixels; the time gray scale correction value corresponding to one color sub-pixel in the plurality of color sub-pixels in the first frame period is associated with the initial gray scale value, the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the first frame period, and the initial gray scale value, the representative polarity corresponding to the one color sub-pixel in the plurality of color sub-pixels in the second frame period, wherein the first frame period is the next frame period of the second frame period. In other words, the spatial gray-scale correction value compensates the initial gray-scale value of the corresponding color sub-pixel with respect to the spatial relationship by using the initial gray-scale value and the representative polarity of the corresponding color sub-pixel and the initial gray-scale value and the representative polarity of the adjacent color sub-pixel, and the temporal gray-scale correction value compensates the initial gray-scale value of the corresponding color sub-pixel with respect to the temporal relationship by using the initial gray-scale value and the representative polarity of the corresponding color sub-pixel in the current frame period and the initial gray-scale value and the representative polarity of the previous frame period, thereby improving the flicker defect of the display panel 160.
In summary, the embodiments of the present application compensate the initial gray value of the color sub-pixel with respect to the spatial relationship through the spatial compensation lookup table and/or compensate the initial gray value of the color sub-pixel with respect to the temporal relationship through the temporal compensation lookup table, thereby improving the defect that the display panel is a picture flicker. For the embodiments of the present application, the compensation for the spatial relationship and the compensation for the temporal relationship can be performed independently or together according to the actual use requirements of the user.
The foregoing outlines features of several embodiments so that those skilled in the art may better understand the aspects of the embodiments of the present application. Those skilled in the art should appreciate that they may readily use the embodiments of the present application as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages of the embodiments introduced herein. Those skilled in the art should also realize that such equivalent constructions do not depart from the spirit and scope of the present disclosure, and that they may make various changes, substitutions, and alterations herein without departing from the spirit and scope of the present disclosure.
[ symbolic description ]
100. 200, 300: display apparatus
120. 220, 320: time sequence controller
140: data driving module
160: display panel
122: initial gray value generation module
124: representative polarity generating module
126: spatial gray-scale correction value generation module
128: time gray scale correction value generation module
129: operation module
1000. 2000, 3000: display method for display panel
1100. 1200, 1300, 2100, 2200, 2300, 3100, 3200, 3300, 3400: step (a)
Claims (6)
1. A display method for a display panel comprising a plurality of pixels, each of the plurality of pixels comprising at least one color sub-pixel, the display method comprising:
receiving image data to generate an initial gray value and a representative polarity corresponding to each color sub-pixel;
generating a spatial gray correction value corresponding to each of the at least one color sub-pixels according to the initial gray value and the representative polarity corresponding to each of the at least one color sub-pixel by using a spatial compensation look-up table;
generating a time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using a time compensation lookup table; and
driving the corresponding color sub-pixels with a plurality of voltages corresponding to a plurality of corrected gray values, wherein the corrected gray value corresponding to each color sub-pixel is a sum of the initial gray value, the spatial gray correction value and the temporal gray correction value;
wherein the spatial gradation correction value of one of the color sub-pixels is the initial gradation value associated with the one of the color sub-pixels, the representative polarity, and the initial gradation value and the representative polarity of the color sub-pixels adjacent to the one of the color sub-pixels;
the time gray correction value corresponding to one of the color sub-pixels in the first frame period is associated with the initial gray value corresponding to the one of the color sub-pixels in the first frame period, the representative polarity, and the initial gray value and the representative polarity corresponding to the one of the color sub-pixels in a second frame period, wherein the first frame period is the next frame period of the second frame period.
2. The display method for a display panel according to claim 1,
when the initial gray value corresponding to the color sub-pixel is not found in the space compensation lookup table, generating the space gray correction value corresponding to the color sub-pixel by adopting an interpolation method;
when the initial gray value corresponding to the color sub-pixel is not found in the time compensation lookup table, an interpolation method is used to generate the time gray correction value corresponding to the color sub-pixel.
3. The display method for a display panel according to claim 1, wherein the display panel is driven in a dot inversion manner.
4. A display device, comprising:
a timing controller, comprising:
the device comprises an initial gray value generation module, a first frame period generation module and a second frame period generation module, wherein the initial gray value generation module is used for receiving image data in a first frame period to generate an initial gray value corresponding to each color sub-pixel in a plurality of color sub-pixels corresponding to the image data;
the representative polarity generating module is used for generating a representative polarity corresponding to each color sub-pixel;
the space gray-scale correction value generating module is used for generating a space gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value corresponding to each color sub-pixel and the representative polarity by utilizing a space compensation lookup table in the first frame period; and
a time gray-scale correction value generating module for generating a time gray-scale correction value corresponding to each color sub-pixel according to the initial gray-scale value and the representative polarity corresponding to each color sub-pixel by using a time compensation lookup table in the first frame period;
the data driving module is used for driving the corresponding color sub-pixels respectively by a plurality of voltages corresponding to the corrected gray values in the first frame period, wherein the corrected gray value corresponding to each color sub-pixel is the sum of the initial gray value, the spatial gray correction value and the time gray correction value; and
a display panel comprising a plurality of pixels, each pixel comprising at least one color subpixel of the plurality of color subpixels;
wherein the spatial gray correction value of one of the plurality of color sub-pixels is the initial gray value associated with the one of the plurality of color sub-pixels, the representative polarity, and the initial gray value and representative polarity of a color sub-pixel adjacent to the one of the plurality of color sub-pixels;
the time gray correction value corresponding to one color sub-pixel of the plurality of color sub-pixels in the first frame period is associated with the initial gray value corresponding to the one color sub-pixel of the plurality of color sub-pixels in the first frame period, the representative polarity, and the initial gray value and the representative polarity corresponding to the one color sub-pixel of the plurality of color sub-pixels in a second frame period, wherein the first frame period is the next frame period of the second frame period.
5. The display device according to claim 4,
when the initial gray value corresponding to the color sub-pixel is not found in the space compensation lookup table, generating the space gray correction value corresponding to the color sub-pixel by adopting an interpolation method;
when the initial gray value corresponding to the color sub-pixel is not found in the time compensation lookup table, an interpolation method is used to generate the time gray correction value corresponding to the color sub-pixel.
6. The display device of claim 4, wherein the display panel is dot inversion driven.
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| WO2022133648A1 (en) * | 2020-12-21 | 2022-06-30 | 京东方科技集团股份有限公司 | Method for processing display signal of display apparatus and device thereof, and display device |
| CN114999419B (en) * | 2022-07-07 | 2023-08-01 | 苏州华星光电技术有限公司 | Display device and electronic apparatus |
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