CN109064988B - Display panel driving method and display device - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000004973 liquid crystal related substance Substances 0.000 claims description 25
- 239000003990 capacitor Substances 0.000 claims description 22
- 238000003491 array Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- 230000035807 sensation Effects 0.000 abstract description 10
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- 238000005516 engineering process Methods 0.000 description 12
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 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
- G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
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Abstract
The invention relates to a driving method and a display device of a display panel, wherein a period of driving pixel units of a 2 beta frame display array is taken as one period, alpha sub-pixels in the pixel units of the beta frame display array are driven to be in a bright area, and alpha sub-pixels in the pixel units of the residual beta frame display array are driven to be in a dark area. In a pixel unit of a 2 beta frame display array displayed in one period on the display array, alpha sub-pixel of each pixel unit in the pixel unit of the 2 beta frame display array realizes bright area and dark area cancellation. Meanwhile, the gamma row sub-pixels driven by the bright area and the other gamma row sub-pixels driven by the dark area are subjected to bright area driving, so that the gamma row sub-pixels driven by the bright area and the gamma row sub-pixels driven by the dark area are offset. Based on the method, the brightness difference or the brightness staggered phenomenon is eliminated, so that the problems of flicker and granular sensation existing in the display of the display panel are solved, and the display quality of the display panel is improved.
Description
Technical Field
The present invention relates to the field of liquid crystal display technologies, and in particular, to a driving method of a display panel and a display device.
Background
Currently, liquid crystal display panels generally employ va (Vertical Alignment negative) type liquid crystal technology or PS (In Panel Switching In-plane) type liquid crystal technology. Among them, va-type liquid crystal technology has advantages of higher production efficiency and low manufacturing cost compared to that of acs-type liquid crystal technology. In the va-type liquid crystal technology, a wide viewing angle technology is generally employed to improve the display viewing angle of a va-type liquid crystal display panel.
In the non-wide-viewing-angle technology, the large-viewing-angle gamma curve bulge corresponding to each sub-pixel is larger. In the wide viewing angle technology, one sub-pixel is divided into a bright area and a dark area, and the problem of the convex of the gamma curve of the large viewing angle corresponding to the sub-pixel is improved. Therefore, the display viewing angle of the va-type liquid crystal display panel can be improved in such a manner that one sub-pixel is divided into a bright area and a dark area using a wide viewing angle technique.
However, in the wide viewing angle technology, one sub-pixel is divided into a bright area and a dark area, and different sub-pixels have a bright-dark difference or a bright-dark staggered phenomenon due to the difference of the bright-dark area driving, so that the liquid crystal display panel using the wide viewing angle technology has the defects of flicker and granular sensation during displaying, and the display quality of the liquid crystal display panel is affected.
Disclosure of Invention
Accordingly, it is necessary to provide a method for driving a display panel and a display device, which are directed to the defects of flicker and granular sensation in displaying a liquid crystal display panel to which a wide viewing angle technology is applied.
A driving method of a display panel comprises a display array, the display array comprises pixel units which are arranged in an array mode, columns formed by the arrangement of the pixel units are sequentially arranged in a row direction, each pixel unit comprises sub-pixels 1, 2, 1, alpha +1, and k, the sub-pixels are sequentially arranged in the row direction, and the alpha is larger than or equal to 1 and smaller than or equal to k, and the driving method comprises the following steps:
taking a pixel unit for driving a 2 beta frame display array as a period, carrying out bright area driving on an alpha sub-pixel of a first pixel unit in a beta frame, and carrying out dark area driving on an alpha sub-pixel of the first pixel unit in the rest beta frames;
on the sub-pixels of the same column, carrying out bright area driving on the sub-pixels of the continuous gamma rows, and carrying out dark area driving on the sub-pixels of the other continuous gamma rows; the gamma-row sub-pixels needing bright area driving and the gamma-row sub-pixels needing dark area driving are alternately arranged.
In the driving method of the display panel, the driving of the pixel units of the 2 β frame display array is taken as one period, the alpha-th sub-pixel in the pixel units of the β frame display array is driven in a bright area, and the alpha-th sub-pixel in the pixel units of the remaining β frame display array is driven in a dark area. In a pixel unit of a 2 β frame display array displayed in one period on the display array, α -th sub-pixels of 2 β first pixel units include β bright-area-driven sub-pixels and β dark-area-driven sub-pixels, that is, α -th sub-pixels of each pixel unit in the pixel unit of the 2 β frame display array achieve bright-area and dark-area cancellation. Meanwhile, the gamma row sub-pixels driven by the bright area and the other gamma row sub-pixels driven by the dark area are subjected to bright area driving, so that the gamma row sub-pixels driven by the bright area and the gamma row sub-pixels driven by the dark area are offset. Based on the method, the brightness difference or the brightness staggered phenomenon is eliminated, so that the problems of flicker and granular sensation existing in the display of the display panel are solved, and the display quality of the display panel is improved.
In one embodiment, the method further comprises the following steps:
on the sub-pixels of the same column, carrying out positive polarity driving on the sub-pixels of the continuous gamma rows, and carrying out negative polarity driving on the sub-pixels of the other continuous gamma rows; wherein, the gamma row sub-pixels which are driven by positive polarity and the gamma row sub-pixels which are driven by negative polarity are alternately arranged.
In one embodiment, the method further comprises the following steps:
and taking driving of pixel units of a 2 beta frame display array as a period, carrying out positive polarity driving on alpha-th sub-pixels of the first pixel unit in the beta frame, and carrying out negative polarity driving on alpha-th sub-pixels of the first pixel unit in the rest beta frames.
In one embodiment, the method further comprises the following steps:
driving the first sub-pixel in positive polarity, and driving the second sub-pixel in negative polarity; the first sub-pixel and the second sub-pixel are adjacent sub-pixels.
In one embodiment, the adjacent sub-pixels include row-direction adjacent sub-pixels and column-direction adjacent sub-pixels.
In one embodiment, the display panel comprises a liquid crystal display panel.
The present invention also provides a display device:
a display device, comprising:
the display device comprises a display array, a light source and a light source, wherein the display array comprises pixel units which are arranged in an array, columns formed by the arrangement of the pixel units are sequentially arranged in a row direction, each pixel unit comprises 1 st, 2 nd, a.
The driving module is used for outputting driving data to enable the display array to display images; wherein, the drive module is specifically used for:
taking a pixel unit for driving a 2 beta frame display array as a period, carrying out bright area driving on an alpha sub-pixel of a first pixel unit in a beta frame, and carrying out dark area driving on an alpha sub-pixel of the first pixel unit in the rest beta frames;
on the sub-pixels of the same column, carrying out bright area driving on the sub-pixels of the continuous gamma rows, and carrying out dark area driving on the sub-pixels of the other continuous gamma rows; the gamma-row sub-pixels needing bright area driving and the gamma-row sub-pixels needing dark area driving are alternately arranged.
In the display device, the driving of the pixel units of the 2 β frame display array is taken as one period, the α -th sub-pixel in the pixel unit of the β frame display array is driven in a bright area, and the α -th sub-pixel in the pixel units of the remaining β frame display arrays is driven in a dark area. In a pixel unit of a 2 β frame display array displayed in one period on the display array, α -th sub-pixels of 2 β first pixel units include β bright-area-driven sub-pixels and β dark-area-driven sub-pixels, that is, α -th sub-pixels of each pixel unit in the pixel unit of the 2 β frame display array achieve bright-area and dark-area cancellation. Meanwhile, the gamma row sub-pixels driven by the bright area and the other gamma row sub-pixels driven by the dark area are subjected to bright area driving, so that the gamma row sub-pixels driven by the bright area and the gamma row sub-pixels driven by the dark area are offset. Based on the method, the brightness difference or the brightness staggered phenomenon is eliminated, so that the problems of flicker and granular sensation existing in the display of the display panel are solved, and the display quality of the display panel is improved.
In one embodiment, the driving module is further specifically configured to:
on the sub-pixels of the same column, carrying out positive polarity driving on the sub-pixels of the continuous gamma rows, and carrying out negative polarity driving on the sub-pixels of the other continuous gamma rows; wherein, the gamma row sub-pixels which are driven by positive polarity and the gamma row sub-pixels which are driven by negative polarity are alternately arranged.
In one embodiment, the driving module is further specifically configured to:
and taking driving of pixel units of a 2 beta frame display array as a period, carrying out positive polarity driving on alpha-th sub-pixels of the first pixel unit in the beta frame, and carrying out negative polarity driving on alpha-th sub-pixels of the first pixel unit in the rest beta frames.
In one embodiment, the driving module is further specifically configured to:
driving the first sub-pixel in positive polarity, and driving the second sub-pixel in negative polarity; the first sub-pixel and the second sub-pixel are adjacent sub-pixels.
Drawings
FIG. 1 is a schematic diagram showing an array structure;
FIG. 2 is a flowchart illustrating a driving method of a display panel according to an embodiment;
FIG. 3 is a schematic view of a driving structure;
FIG. 4 is a schematic diagram of a display array driver according to an embodiment;
FIG. 5 is a diagram illustrating driving of sub-pixels in a same column according to an embodiment;
FIG. 6 is a flowchart illustrating a driving method of a display panel according to another embodiment;
FIG. 7 is a schematic view of a sub-pixel structure;
FIG. 8 is a driving diagram of the same column of sub-pixels according to another embodiment;
FIG. 9 is a flowchart illustrating a driving method of a display panel according to another embodiment;
FIG. 10 is a schematic diagram of a display array driver according to another embodiment;
FIG. 11 is a flowchart illustrating a driving method of a display panel according to yet another embodiment;
FIG. 12 is a schematic diagram of a display array driver according to yet another embodiment;
fig. 13 is a schematic structural view of the display device.
Detailed Description
For better understanding of the objects, technical solutions and effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples. It is to be noted that the following examples are given for the purpose of illustration only and are not intended to limit the invention
The embodiment of the invention provides a driving method of a display panel, which comprises the following steps:
a driving method of a display panel comprises the steps that the display panel comprises a display array, the display array comprises pixel units which are arranged in an array mode, columns formed by the arrangement of the pixel units are sequentially arranged in a row direction, each pixel unit comprises sub-pixels 1, 2, a.
Fig. 1 is a schematic diagram showing the structure of a display array, which includes a plurality of pixel units a arranged in an array, as shown in fig. 1. As can be seen from fig. 1, the pixel units are arranged to form pixel columns, and the pixel columns are arranged in sequence in the row direction, such as pixel column 1, pixel column 2, pixel column 3, and pixel column 4 shown in fig. 1. In fig. 1, k =3 is taken as an example, that is, one pixel unit includes three sub-pixels, which are RGB sub-pixels, that is, a first sub-pixel is R, a second sub-pixel is G, and a third sub-pixel is B.
In one embodiment, the display panel comprises a liquid crystal display panel.
Fig. 2 is a flowchart of a driving method of a display panel according to an embodiment, and as shown in fig. 2, the driving method includes steps S100 and S101:
and S100, taking the driving of the pixel unit of the 2 beta frame display array as a period, carrying out bright area driving on the alpha sub-pixel of the first pixel unit in the beta frame, and carrying out dark area driving on the alpha sub-pixel of the first pixel unit in the residual beta frame.
S101, on the same column of sub-pixels, carrying out bright area driving on the sub-pixels in the continuous gamma rows, and carrying out dark area driving on the sub-pixels in the other continuous gamma rows; the gamma-row sub-pixels needing bright area driving and the gamma-row sub-pixels needing dark area driving are alternately arranged.
The first pixel unit in the beta frame and the first pixel unit in the rest beta frames are the same pixel unit. It should be noted that the first pixel unit does not include a limitation on a specific pixel unit in the display array, and may be any one pixel unit in the display array.
Fig. 3 is a schematic view of a driving structure. In the liquid crystal driving structure, a plurality of sub-pixel structures are arranged in an array, a scanning signal Si (i is more than or equal to 1 and less than or equal to m) is input into each row, and a data signal Dj (j is more than or equal to 1 and less than or equal to n) is input into each column. In general, the scan signal Si is input row by row, i.e., S1 to Sm are sequentially input with a high level at a fixed period, so that the sub-pixels of the row are input with data signals. When the input of the scanning signal is finished, the display of one frame of graphics is finished. Typically, the one-frame scan time is 1/60 seconds, i.e., the refresh rate is 60 hertz. The driving is completed by taking the driving of the pixel units of the 2 β frame display array as one period, that is, taking the 2 β frame as one cycle, wherein each frame scans all the pixel columns in the display array.
And performing bright-area driving on the alpha sub-pixel, namely driving a bright area in the alpha sub-pixel. The alpha sub-pixel is driven in dark, i.e. the dark area in the alpha sub-pixel is driven. The sub-pixel area with a larger capacitance value ratio in the sub-pixel area is a bright area, the opposite sub-pixel area is a dark area, and the capacitance value ratio is the capacitance value ratio of the storage capacitor and the liquid crystal capacitor in the sub-pixel area.
Fig. 4 is a schematic diagram of a display array driving according to an embodiment, where β =2 and k =3 are taken as examples in fig. 4, and as shown in fig. 4, a pixel unit of a 4-frame display array is driven for one period, and meanwhile, fig. 4 is taken as an example of driving a first pixel column in the display array, and the 4-frame display array pixel unit includes a 1 st frame, a 2 nd frame, a 3 rd frame and a 4 th frame. Referring to the first sub-pixel of the pixel unit in the first row in the display array of frames 1 to 4, taking the pixel unit in the first row of each pixel column as an example, that is, the pixel unit of frame 4 includes 4 α sub-pixels. According to the driving method of the display panel shown in fig. 2, 2 arbitrary ones of the 4 α -th sub-pixels are bright-area driven, the remaining 2 ones are dark-area driven, and the 4 columns include 2 bright areas and 2 dark areas (where M denotes a bright area and S denotes a dark area). Similarly, the sub-pixels of the pixel units in the same row in each pixel column include 2 bright regions and 2 dark regions.
Fig. 5 is a schematic diagram of driving sub-pixels in the same column, wherein the bright-area driving is switched every 2 consecutive rows with γ =2, as shown in fig. 5, taking a first column as an example, wherein the first row and the second row are used for bright-area driving, the third row and the fourth row are used for dark-area driving, and the fifth row and the sixth row are used for bright-area driving. That is, the bright area or dark area driving is performed every 2 consecutive rows, so that the sub-pixels of 2 rows performing the bright area driving and the sub-pixels of 2 rows performing the dark area driving are alternately arranged. Similarly, γ may take other values depending on the display characteristics.
In the driving method of the display panel according to the above embodiment, the driving of the pixel unit of the 2 β frame display array is taken as one period, the bright area driving is performed on the α -th sub-pixel in the pixel unit of the β frame display array, and the dark area driving is performed on the α -th sub-pixel in the pixel units of the remaining β frame display arrays. In a pixel unit of a 2 β frame display array displayed in one period on the display array, α -th sub-pixels of 2 β first pixel units include β bright-area-driven sub-pixels and β dark-area-driven sub-pixels, that is, α -th sub-pixels of each pixel unit in the pixel unit of the 2 β frame display array achieve bright-area and dark-area cancellation. Meanwhile, the gamma row sub-pixels driven by the bright area and the other gamma row sub-pixels driven by the dark area are subjected to bright area driving, so that the gamma row sub-pixels driven by the bright area and the gamma row sub-pixels driven by the dark area are offset. Based on the method, the brightness difference or the brightness staggered phenomenon is eliminated, so that the problems of flicker and granular sensation existing in the display of the display panel are solved, and the display quality of the display panel is improved.
In one embodiment, there is provided a driving method of the second embodiment:
fig. 6 is a flowchart of a driving method of a display panel according to another embodiment, and as shown in fig. 6, the driving method of the display panel further includes step S200:
s200, on the sub-pixels in the same column, carrying out positive polarity driving on the sub-pixels in the continuous gamma rows, and carrying out negative polarity driving on the sub-pixels in the other continuous gamma rows; wherein, the gamma row sub-pixels which are driven by positive polarity and the gamma row sub-pixels which are driven by negative polarity are alternately arranged.
Fig. 7 is a schematic diagram of a sub-pixel structure, and as shown in fig. 7, the sub-pixel structure includes a three-terminal switching device T1, which is generally a thin film transistor, and has a gate to which a scan signal Si is input, a source to which a data signal Dj is input, and a drain to which two capacitors Cs and Clc are connected in parallel, wherein the capacitor Cs is an energy storage capacitor and the capacitor Clc is a liquid crystal capacitor. The other end of the parallel capacitor may be connected to a common voltage Vcom.
When the scan signal Si is input to a high level, the thin film transistor T1 is turned on, and receives the input data signal Dj (voltage signal). The voltage difference between the data signal Dj and the common voltage Vcom charges the capacitors Cs, Clc, wherein the voltage between Clc deflects the liquid crystal molecules therein, so that the backlight transmits light of a corresponding degree according to the degree of deflection of the liquid crystal molecules, thereby making the sub-pixel present a corresponding brightness. The capacitor Cs is used to hold this voltage until the next scan comes.
The voltage of the data signal Dj may be higher than the common voltage Vcom or lower than the common voltage Vcom. When the absolute value of the voltage difference between the two is the same and the signs are opposite, the brightness displayed by the driving sub-pixels is the same. When the voltage of the data signal Dj is higher than the common voltage Vcom, in the present embodiment, it is referred to as positive polarity driving, and otherwise, it is referred to as negative polarity driving.
Fig. 8 is a schematic diagram of driving sub-pixels in the same column according to another embodiment, where γ =2, i.e. bright-area driving is switched every 2 consecutive rows, as shown in fig. 8, taking a first column as an example, where the first row and the second row are driven with positive polarity, the third row and the fourth row are driven with negative polarity, and the fifth row and the sixth row are driven with positive polarity. That is, positive polarity or negative polarity driving is performed every 2 consecutive rows so that the sub-pixels of the 2 rows performing positive polarity driving and the sub-pixels of the 2 rows performing negative polarity driving are alternately arranged. Similarly, γ may take other values depending on the display characteristics.
Referring to fig. 8, when the driving method flowchart of the second embodiment is applied, in combination with the driving method of the first embodiment, the driving method of each consecutive γ row of sub-pixels is completely consistent, including the bright area driving and the dark area driving. In view of this, in the embodiment of the present invention, the driving methods of the sub-pixels in the corresponding columns are the same for each consecutive γ -row pixel unit, so that the pixel units are driven in the same manner for each consecutive γ -row pixel unit, and the driving methods are reversed for the subsequent consecutive γ -row pixel units.
In the driving method of the display panel according to the other embodiment, the sub-pixels in the successive γ rows are driven with positive polarity and the sub-pixels in the other successive γ rows are driven with negative polarity in the sub-pixels in the same column; the gamma-row sub-pixels which are driven by positive polarity and the gamma-row sub-pixels which are driven by negative polarity are alternately arranged, so that the alternately arranged gamma-row sub-pixels which are driven by different polarities are mutually offset, the problems of flicker and granular sensation existing in the display process of the display panel are further solved, and the display quality of the display panel is improved.
Fig. 9 is a flowchart of a driving method of a display panel according to another embodiment, and as shown in fig. 9, the driving method of the display panel further includes step S300:
s300, with driving the pixel units of the 2 β frame display array as a period, performing positive driving on the α -th sub-pixel of the first pixel unit in the β frame display array, and performing negative driving on the α -th sub-pixel of the first pixel unit in the remaining β frame display array.
Fig. 10 is a schematic diagram of driving a display array according to another embodiment, where β =2 and k =3 in fig. 10 are taken as examples, as shown in fig. 10, the first sub-pixel of the pixel unit in the first row in frames 1 to 4 is seen, and fig. 10 is taken as an example of driving the first pixel column in the display array, and the pixel unit in the display array of frames 4 includes frame 1, frame 2, frame 3 and frame 4. The 4 frames include 2 positive-polarity-driven sub-pixels and 2 negative-polarity-driven sub-pixels (where, + denotes positive-polarity driving and-denotes negative-polarity driving). Similarly, the corresponding sub-pixels of the pixel units in the same row in each pixel column include 2 sub-pixels driven by positive polarity and 2 sub-pixels driven by negative polarity. By analogy, in the driving with the pixel unit of the 2 β frame display array as one period, the corresponding sub-pixels of the pixel unit in the same row in each pixel column include β sub-pixels driven by positive polarity and β sub-pixels driven by negative polarity.
In the method for driving a display panel according to another embodiment, the α -th sub-pixel of the first pixel unit in the β frame display array is driven with positive polarity, and the α -th sub-pixel of the first pixel unit in the remaining β frame display array is driven with negative polarity, with the driving of the pixel unit of the 2 β frame display array as one cycle. Based on this, in each pixel unit of the 2 β frame display array, the α -th sub-pixel of the 2 β first pixel unit includes β bright-area-driven sub-pixels and β dark-area-driven sub-pixels, that is, the α -th sub-pixels in each pixel unit of the 2 β frame display array achieve positive and negative polarity cancellation, thereby further solving the problem of flicker and granular sensation during display of the display panel, and improving the display quality of the display panel.
Fig. 11 is a flowchart illustrating a driving method of a display panel according to still another embodiment, and as shown in fig. 11, the driving method of the display panel further includes step S400:
s400, performing positive polarity driving on the first sub-pixel and performing negative polarity driving on the second sub-pixel; the first sub-pixel and the second sub-pixel are adjacent sub-pixels.
Fig. 12 is a schematic diagram of a display array driving according to yet another embodiment, where fig. 12 takes k =3 and the number of pixel columns is 4 as an example, where the example includes a pixel column 1, a pixel column 2, a pixel column 3 and a pixel column 4, as shown in fig. 12, each sub-pixel is driven by a different positive polarity from that of an adjacent sub-pixel, that is, if any sub-pixel is driven by a positive polarity, any adjacent sub-pixel is driven by a negative polarity. The adjacent sub-pixels comprise row direction adjacent sub-pixels and column direction adjacent sub-pixels. The pixel columns of different columns do not affect the adjacent relationship of the sub-pixels. For example, the 3 rd sub-pixel in the 1 st row in the pixel column 1 and the 1 st sub-pixel in the 1 st row in the pixel column 2 are also in adjacent relationship, and are adjacent sub-pixels to each other.
In the method for driving a display panel according to the above-described further embodiment, the first sub-pixel is driven in the positive polarity, and the second sub-pixel is driven in the negative polarity, so that the positive and negative polarities of the adjacent sub-pixels are cancelled, thereby further solving the problem of flicker and granular sensation of the display panel during display and improving the display quality of the display panel.
The embodiment of the invention also provides a display device:
fig. 13 is a schematic structural diagram of a display device, and as shown in fig. 13, the display device includes a display array 10 and a driving module 11:
wherein the display device comprises a liquid crystal display device.
The display device comprises a display array 10, wherein the display array 10 comprises pixel units which are arranged in an array, columns formed by the arrangement of the pixel units are sequentially arranged in a row direction, each pixel unit comprises 1, 2, 1, alpha +1, 1-k sub-pixels which are sequentially arranged in the row direction, and alpha is more than or equal to 1 and less than or equal to k;
the driving module 11 is configured to output driving data to enable the display array to display an image; the driving module 11 is specifically configured to:
the driving module 11 outputs driving data to the pixel unit, and the pixel unit performs corresponding display after receiving the driving data.
Taking a pixel unit for driving a 2 beta frame display array as a period, carrying out bright area driving on an alpha sub-pixel of a first pixel unit in the beta frame display array, and carrying out dark area driving on alpha sub-pixels of the first pixel unit in the rest beta frame display array;
on the sub-pixels of the same column, carrying out bright area driving on the sub-pixels of the continuous gamma rows, and carrying out dark area driving on the sub-pixels of the other continuous gamma rows; the gamma-row sub-pixels needing bright area driving and the gamma-row sub-pixels needing dark area driving are alternately arranged.
In one embodiment, the driving module 11 is further specifically configured to:
on the sub-pixels of the same column, carrying out positive polarity driving on the sub-pixels of the continuous gamma rows, and carrying out negative polarity driving on the sub-pixels of the other continuous gamma rows; wherein, the gamma row sub-pixels which are driven by positive polarity and the gamma row sub-pixels which are driven by negative polarity are alternately arranged.
In one embodiment, the driving module 11 is further specifically configured to:
and taking the pixel unit of the 2 beta frame display array as a period, carrying out positive polarity driving on the alpha-th sub-pixel of the first pixel unit in the beta frame display array, and carrying out negative polarity driving on the alpha-th sub-pixel of the first pixel unit in the rest beta frame display array.
In one embodiment, the driving module 11 is further specifically configured to:
driving the first sub-pixel in positive polarity, and driving the second sub-pixel in negative polarity; the first sub-pixel and the second sub-pixel are adjacent sub-pixels.
In the display device, the driving of the pixel units of the 2 β frame display array is taken as one period, the α -th sub-pixel in the pixel unit of the β frame display array is driven in a bright area, and the α -th sub-pixel in the pixel units of the remaining β frame display arrays is driven in a dark area. In a pixel unit of a 2 β frame display array displayed in one period on the display array, α -th sub-pixels of 2 β first pixel units include β bright-area-driven sub-pixels and β dark-area-driven sub-pixels, that is, α -th sub-pixels of each pixel unit in the pixel unit of the 2 β frame display array achieve bright-area and dark-area cancellation. Meanwhile, the gamma row sub-pixels driven by the bright area and the other gamma row sub-pixels driven by the dark area are subjected to bright area driving, so that the gamma row sub-pixels driven by the bright area and the gamma row sub-pixels driven by the dark area are offset. Based on the method, the brightness difference or the brightness staggered phenomenon is eliminated, so that the problems of flicker and granular sensation existing in the display of the display panel are solved, and the display quality of the display panel is improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some 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 (9)
1. A driving method of a display panel comprises a display array, the display array comprises pixel units which are arranged in an array, columns formed by the arrangement of the pixel units are sequentially arranged in a row direction, each pixel unit comprises 1 st, 2 nd, 1.
Taking a pixel unit for driving a 2 beta frame display array as a period, carrying out bright area driving on an alpha sub-pixel of a first pixel unit in a beta frame, and carrying out dark area driving on an alpha sub-pixel of the first pixel unit in the pixel units of the rest beta frame display arrays;
the sub-pixel comprises a three-terminal switching device, a scanning signal is input into a grid electrode of the three-terminal switching device, a data signal is input into a source electrode of the three-terminal switching device, two capacitor energy storage capacitors and a liquid crystal capacitor which are connected in parallel are connected to a drain electrode of the three-terminal switching device, and the other end of each capacitor in parallel can be connected with a common voltage;
on the sub-pixels of the same column, carrying out bright area driving on the sub-pixels of the continuous gamma rows, and carrying out dark area driving on the sub-pixels of the other continuous gamma rows; the gamma-row sub-pixels which need to be driven by the bright area and the gamma-row sub-pixels which need to be driven by the dark area are alternately arranged;
on the sub-pixels of the same column, carrying out positive polarity driving on the sub-pixels of the continuous gamma rows, and carrying out negative polarity driving on the sub-pixels of the other continuous gamma rows; wherein, the gamma row sub-pixels which are driven by positive polarity and the gamma row sub-pixels which are driven by negative polarity are alternately arranged;
the sub-pixel area with a larger capacitance value ratio in the sub-pixel area is a bright area, the opposite sub-pixel area is a dark area, and the capacitance value ratio is the capacitance value ratio of the storage capacitor and the liquid crystal capacitor in the sub-pixel area.
2. The method of claim 1, wherein the first pixel unit in the β frame is the same as the first pixel unit in the remaining β frames.
3. The method for driving a display panel according to claim 1, further comprising the steps of:
and taking driving of pixel units of a 2 beta frame display array as a period, carrying out positive polarity driving on alpha-th sub-pixels of the first pixel unit in the beta frame, and carrying out negative polarity driving on alpha-th sub-pixels of the first pixel unit in the rest beta frames.
4. The method for driving a display panel according to claim 1, further comprising the steps of:
driving the first sub-pixel in positive polarity, and driving the second sub-pixel in negative polarity; the first sub-pixel and the second sub-pixel are adjacent sub-pixels.
5. The method according to claim 4, wherein the adjacent sub-pixels comprise row-direction adjacent sub-pixels and column-direction adjacent sub-pixels.
6. The method for driving a display panel according to any one of claims 1 to 5, wherein the display panel includes a liquid crystal display panel.
7. A display device, comprising:
the display device comprises a display array, a pixel unit and a pixel unit, wherein the display array comprises pixel units which are arranged in an array, columns formed by the arrangement of the pixel units are sequentially arranged in a row direction, each pixel unit comprises 1 st sub-pixel, 2 nd sub-pixel, an alpha +1 st sub-pixel, a.
The driving module is used for outputting driving data to enable the display array to display images; wherein the driving module is specifically configured to:
taking a pixel unit for driving a 2 beta frame display array as a period, carrying out bright area driving on an alpha sub-pixel of a first pixel unit in a beta frame, and carrying out dark area driving on an alpha sub-pixel of the first pixel unit in the rest beta frames;
the sub-pixel comprises a three-terminal switching device, a scanning signal is input into a grid electrode of the three-terminal switching device, a data signal is input into a source electrode of the three-terminal switching device, two capacitor energy storage capacitors and a liquid crystal capacitor which are connected in parallel are connected to a drain electrode of the three-terminal switching device, and the other end of each capacitor in parallel can be connected with a common voltage;
on the sub-pixels of the same column, carrying out bright area driving on the sub-pixels of the continuous gamma rows, and carrying out dark area driving on the sub-pixels of the other continuous gamma rows; the gamma-row sub-pixels which need to be driven by the bright area and the gamma-row sub-pixels which need to be driven by the dark area are alternately arranged;
on the sub-pixels of the same column, carrying out positive polarity driving on the sub-pixels of the continuous gamma rows, and carrying out negative polarity driving on the sub-pixels of the other continuous gamma rows; wherein, the gamma row sub-pixels which are driven by positive polarity and the gamma row sub-pixels which are driven by negative polarity are alternately arranged;
the sub-pixel area with a larger capacitance value ratio in the sub-pixel area is a bright area, the opposite sub-pixel area is a dark area, and the capacitance value ratio is the capacitance value ratio of the storage capacitor and the liquid crystal capacitor in the sub-pixel area.
8. The display device according to claim 7, wherein the driving module is further specifically configured to:
and taking driving of pixel units of a 2 beta frame display array as a period, carrying out positive polarity driving on alpha-th sub-pixels of the first pixel unit in the beta frame, and carrying out negative polarity driving on alpha-th sub-pixels of the first pixel unit in the rest beta frames.
9. The display device according to claim 7, wherein the driving module is further specifically configured to:
driving the first sub-pixel in positive polarity, and driving the second sub-pixel in negative polarity; the first sub-pixel and the second sub-pixel are adjacent sub-pixels.
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| CN109215577B (en) * | 2018-09-11 | 2020-06-23 | 重庆惠科金渝光电科技有限公司 | Driving circuit, driving method and display panel |
| CN109830203B (en) * | 2019-03-05 | 2022-02-25 | 武汉天马微电子有限公司 | Display panel, driving method thereof and display device |
| TWI738441B (en) * | 2020-07-29 | 2021-09-01 | 友達光電股份有限公司 | Display device |
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