CN109979386A - Driving method and device of display panel - Google Patents
Driving method and device of display panel Download PDFInfo
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- CN109979386A CN109979386A CN201910390360.XA CN201910390360A CN109979386A CN 109979386 A CN109979386 A CN 109979386A CN 201910390360 A CN201910390360 A CN 201910390360A CN 109979386 A CN109979386 A CN 109979386A
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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
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3216—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
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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
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a driving method of a display panel, which comprises the steps of averagely dividing a storage module into N preset frames according to the resolution of the display panel to obtain N +1 gray-scale values, wherein N is an integer greater than or equal to 2; converting the gray scale values into display data, and respectively storing each display data in the preset frame in a bit-by-bit manner; and after each preset time length, adjusting the brightness of each preset frame of the storage module. The invention also provides a driving device of the display panel, which realizes the display of the gray-scale picture of the display panel, widens the application range and also improves the visual effect of human eyes.
Description
Technical field
The present invention relates to display field more particularly to the driving methods and device of a kind of display panel.
Background technique
Currently, display panel such as LED, LEC, plasma, passive matrix Organic Light Emitting Diode (Passive Matrix
Light Emitting Diode, PMOLED), active matrix organic light-emitting diode (Active Matrix Organic
Light Emitting Diode, AMOLED) etc..Wherein, the construction of passive mode is simpler, driving view electric current decision grayscale,
Resolution ratio and image quality performance, it is in the majority with monochromatic and multi-colored product, it applies on small-size product.Monochrome passive matrix/organic light emitting
Diode (PMOLED) display panel processing procedure it is simple and apply it is universal, during actual circuit driving, to light line by line or
Person will put bright pixel by column, and the mode for generalling use progressive scan realizes the driving of monochromatic PMOLED display panel.Due in list
Be only able to display monochromatic picture on color PMOLED display panel, cannot show grayscale picture, display grayscale picture then need using at
This higher grayscale PMOLED display panel, and the monochromatic picture shown on monochrome PMOLED display panel also imitates human eye vision
Fruit is bad.
Summary of the invention
In view of this, the present invention provides a kind of drive of display panel that can be shown grayscale picture, improve human eye vision effect
Dynamic method and device, to solve above-mentioned technical problem, the present invention is realized using scheme in detail below.
On the one hand, the present invention provides a kind of driving method of display panel comprising:
Memory module is divided into N number of default frame according to the resolution ratio of the display panel and obtains N+1 grayscale value, N
For the integer more than or equal to 2；
The grayscale value is converted into display data, is respectively stored in each display data progress quartile described pre-
If in frame；
It is every after preset duration, the brightness of each default frame of the memory module is adjusted.
As a further improvement of the above technical scheme, it is described by each display data carry out quartile be stored in it is described
In default frame, comprising:
The digit of the display data is identical as the quantity of the default frame, and the display data are at least by double figures group
At the display data are respectively stored in from low to high or from high to low in the default frame.
As a further improvement of the above technical scheme, the preset duration is that the display panel shows a secondary picture
Time, the display panel are monochrome PMOLED, are scanned display to each default frame by the way of progressive scan.
As a further improvement of the above technical scheme, the display panel includes several pixels, the pixel
Quantity is corresponding with the resolution ratio, and the pixel is arranged in arrays.
As a further improvement of the above technical scheme, N is equal to 2, and the default frame includes first frame and the second frame, corresponds to
0,1,2 three grayscale value is obtained, the grayscale value is converted into display data and obtains seniority top digit and lower-order digit, the first frame pair
The memory module answered is used to store the seniority top digit of the grayscale value, and second frame is used to store the lower-order digit of the grayscale value；
Alternatively, the corresponding memory module of institute's first frame is used to store the lower-order digit of the grayscale value, second frame
For storing the seniority top digit of the grayscale value.
As a further improvement of the above technical scheme, the display data are one group of binary number, the display data
The opening and closing of pixel on the corresponding display panel.
As a further improvement of the above technical scheme, the brightness of each default frame of the memory module is carried out
It adjusts, further includes:
According to the preset duration, is progressively scanned to the first frame in the default frame, reduce the first frame
Every a line opening time, increase the shut-in time of described every a line, obtain grayscale picture by gamma correction.
On the other hand, the present invention also provides a kind of driving devices of display panel comprising:
Memory module is divided into N number of default frame for the resolution ratio according to the display panel and obtains N+1 by memory
A grayscale value, N are the integer more than or equal to 2；
Each display data are carried out quartile respectively for the grayscale value to be converted into display data by controller
It is stored in the default frame；
The controller be also used to it is every after preset duration, by the brightness of each default frame of the memory module
It is adjusted.
The driving method of display panel provided by the invention a kind of and device have the beneficial effect that by by display panel
Memory is divided into several equal portions and obtains the frame of corresponding pixel, and the memory is for storing each display panel
The corresponding display data of pixel, the high position for showing data and low level are respectively stored in first frame and nth frame is corresponding deposits
In reservoir, the opening and closing of all pixels point, the gray-scale figure of available even variation are realized by the scan round of the controller
Piece, to widen the scope of application of the display panel.It keeps frame frequency constant, is scanned by every row to each frame,
The shut-in time for reducing the opening time of every row of each frame and increasing every row of each frame obtains grayscale picture, makes
Human eye vision better effect.
Detailed description of the invention
Illustrate the technical solutions in the embodiments of the present application or in the prior art in order to clearer, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is that the invention shows the flow charts of the driving method of panel；
Fig. 2 is that the memory module of 128*128bit of the present invention shows the schematic diagram of three grayscale；
Fig. 3 is the linear distribution schematic diagram of the display brightness of Fig. 2；
Fig. 4 is the nonlinear Distribution schematic diagram of the display brightness of the gamma correction of Fig. 3；
Fig. 5 is the schematic diagram of three grayscale of the display panel of 128*128 resolution ratio of the present invention；
Fig. 6 is the schematic diagram of the adjusting display brightness of Fig. 5；
Fig. 7 is the schematic diagram of four grayscale of the display panel of 64*128 resolution ratio of the present invention；
Fig. 8 is that the invention shows the structural block diagrams of the driving device of panel.
Main element symbol description:
The driving device of 100- display panel；120- memory；130- controller；150- first frame；The second frame of 160-.
Specific embodiment
The invention will be further described with attached drawing combined with specific embodiments below, elaborates in the following description more
Details to facilitate a thorough understanding of the present invention, still the present invention obviously can be come with to be much different from the other modes of this description it is real
It applies, those skilled in the art can make similar popularization according to practical situations without violating the connotation of the present invention, drill
It unravels silk, therefore should not be limited the scope of the invention with the content of this specific embodiment.
Refering to fig. 1, on the one hand, the present invention provides a kind of driving method of display panel comprising:
Step S101: memory module is divided by N number of default frame according to the resolution ratio of the display panel and obtains N+1
Grayscale value, N are the integer more than or equal to 2；
In the present embodiment, the display panel is with monochromatic passive-matrix organic electric exciting light-emitting diode (Passive
Matrix OLED, PMOLED) for display panel, the resolution ratio of the display panel is 128*128, i.e., the described display panel
There is 128*128 pixel, the pixel is arranged in arrays, the memory module is divided into equal-sized N equal portions, quite
In the pixel of the display control of the display panel is divided into corresponding N equal portions.Wherein, the driving method of the display panel
It is generally divided into static drive mode and dynamic driving mode, and monochrome PMOLED display panel is realized using dynamic driving mode
Grayscale visual effect.It should be noted that the grayscale value refer to by it is most bright with it is most dark between brightness change be divided into it is corresponding
Several pieces, to carry out the control that signal inputs corresponding screen intensity, every digitized video is all as combined by many points
Made of, these points are known as pixel (pixels), each pixel can show many different colors, it be by it is red, green,
Blue (RGB) three sub-pixel compositions.The light source of each sub-pixel, behind can show different gray scales,
This intermediate level is more, and the picture effect that can be presented is also finer and smoother.The range of the usual grayscale value is 0~255, institute
Stating grayscale value indicates the color change of corresponding pixel.For example, it is 128* that driving chip, which has been internally integrated a memory capacity,
The memory module of the display data of 128bit, can show the monochromatic picture of 128*128 resolution ratio, and the memory module is divided into
The part that two sizes are 64*128 stores the display data of first frame and the second frame respectively, obtains 0,1,2 three kind of grayscale value.
Step S102: the grayscale value is converted into display data, each display data are subjected to quartile respectively and are deposited
Storage is in the default frame；
In the present embodiment, two equal portions are divided into according to the memory module of the display panel of resolution ratio 128*128 and obtain two
A described three grayscale values of default frame, and to contain 64*128*2 binary for three grayscale pictures of a width 64*128 resolution ratio
Show data, i.e., each pixel and the display data on the described display panel correspond, i.e., by the memory module
It is divided into several equal portions and just obtains several default frames, obtain accordingly increasing a grayscale value.The grayscale value includes a high position
The seniority top digit of the display data is stored in the corresponding memory module of first frame, the display by several and lower-order digit double figures
The lower-order digit of data is stored in the corresponding memory module of the second frame, alternatively, the lower-order digit of the display data is stored in the
In the corresponding memory module of one frame, the seniority top digit of the display data is stored in the corresponding memory module of the second frame, after being convenient for
It is continuous that the display that the grayscale picture of the display panel is realized in progressive scan is carried out to each default frame.
Step S103: it is every after preset duration, the brightness of each default frame of the memory module is adjusted
Section.
In the present embodiment, by taking a secondary picture as an example, the time that the picture needs is shown on said display panel
For T, every a line that the memory module is divided into each frame of two equal portions is shown that the time is t, is deposited according to the default frame correspondence
The display data of storage are opened and closed the pixel of every a line, due to showing the picture by the way of progressive scan, and it is described
Display panel shows that the line number of a frame picture is all the same with the line number for showing two frames, i.e., the display time t of every a line is constant, also
To say, only the sweep time of a frame be divided into two frames after the summation of sweep time of two frames it is identical, it is described default by reducing
The opening time t1 of pixel described in every a line of frame increases the shut-in time t2 of the pixel of every a line of the default frame,
Wherein t=t1+t2, it should be noted that when controlling the opening and closing of the pixel, need to carry out gamma correction, it in this way can be with
The picture shown on said display panel is in the visual effect of dynamic gray level.
It is further, described that each display data progress quartile is stored in the default frame, comprising:
The digit of the display data is identical as the quantity of the default frame, and the display data are at least by double figures group
At the display data are respectively stored in from low to high or from high to low in the default frame.
In the present embodiment, for showing three grayscale pictures, the display data are corresponding with the grayscale value, described
Show that data include at least double figures, i.e. seniority top digit and lower-order digit, the digit of the display data and the quantity of the default frame
It is identical, the memory module is divided into two equal portions and obtains first frame and the second frame, the grayscale value includes 0,1,2, corresponding turn
Chemical conversion display data are 00,01,10, indicate that the complete secretly i.e. described pixel is in off state with " 00 ", since " 01 " and " 10 " exists
" 11 " are indicated that all light, that is, pixel is open state by indistinction when display brightness, and the display data can be expressed as
00,01,11, the seniority top digit that the display data are 00,01 and 11 is respectively 0,0,1, and the display data are 00 and 01 and 11
Lower-order digit be respectively 0,1,1, the seniority top digit is stored in the corresponding memory module of first frame, the lower-order digit is stored in
In the corresponding memory module of second frame, summarize alternatively, the lower-order digit is stored in the corresponding memory module of first frame, the height
Digit is stored in the corresponding memory module of the second frame, it will be understood that display data in the memory module of the first frame with
Display data in the memory module of second frame are different, i.e., the described first frame is different with the display brightness of second frame,
Grayscale effect is presented.
Further, the preset duration is the time that the display panel shows a secondary picture, and the display panel is
Monochromatic PMOLED is scanned display to each default frame by the way of progressive scan.
The display panel is monochrome PMOLED, and in general, the monochrome PMOLED only shows that one is secondary monochromatic
The display content of picture, the corresponding each frame of the display panel is identical with display brightness, progressive scan
(progressive scan) is completed by primary line by line, can be on said display panel by the progressive scan
All horizontal lines of picture are shown, to improve the display effect of the display panel.
As shown in Fig. 2, the display panel includes 64* by taking the monochromatic POMOLED display panel of 64*128 resolution ratio as an example
The driving chip of 128 pixels arranged in arrays, the display panel has been internally integrated the memory module of 128*128bit,
It should be noted that the resolution ratio of the display panel and the display data of each frame correspond.By the memory module point
It is two parts of 64*128, i.e. first frame 150 and the second frame 160 for two sizes, obtains three kinds of grayscale values accordingly, it is described
Memory for storing the display data of first frame 150 and the second frame 160 respectively, wherein each pixel includes 0,
1, the binary system of 2 three kinds of grayscale values, corresponding display data can be expressed as 2 ' b00,2 ' b01,2 ' b11, i.e. a width 64*
Three grayscale pictures of 128 resolution ratio contain 64*128*2 binary display data, and the 2bit of each pixel is shown
The seniority top digit of data is stored in the corresponding storage memory module of the first frame, and the lower-order digit of the display data is stored in institute
It states in the corresponding memory module of the second frame, the display data such as following table of the corresponding first frame 150 of three kinds of grayscale values and the second frame 160
It is shown:
| Gray 0 | Gray 1 | Gray 2 | |
| Frame 1 | 0 | 0 | 1 |
| Frame 2 | 0 | 1 | 1 |
Table 1
In above-mentioned table 1, realized according to the first frame (Frame 1) and the display data of second frame (Frame 2)
It alternately displays, the grayscale value (Gray) is 0, and corresponding two frame is entirely dark, and the grayscale value is 1, and a corresponding frame is bright and a frame
Secretly, the grayscale value is 2, corresponding two frames all light.As shown in figure 3, the corresponding display brightness of three kinds of grayscale values, the first frame
150 is equal with the display brightness of second frame 160.Fig. 4 is that the visual effect of display brightness of the Fig. 3 after gamma correction is illustrated
Figure, it should be noted that display brightness is physically linear, but feeling for human eye is nonlinear, therefore is just needed
Further gamma correction just makes display brightness physically become non-linear, but human eye can but feel be it is linear, i.e.,
The display brightness of the display panel is even variation.
In the present embodiment, the seniority top digit of the display data is stored in the corresponding memory module of first frame 150, institute
The second frame 160 is stated for storing the lower-order digit of the display data, similarly, the first frame 150 can be used for storing described
Showing the lower-order digit of data, second frame 160 is used to store the seniority top digit of the display data, in this way in the timing of frame frequency one,
Also the gray scale variation for the picture that each frame is shown may be implemented.Corresponding table is as follows:
| Gray 0 | Gray 1 | Gray 2 | |
| Frame 1 | 0 | 1 | 1 |
| Frame 2 | 0 | 0 | 1 |
Table 2
Although it should be noted that the value in first frame 150 and the second frame 160 in table 1 and table 2 show data some not
Together, but when being progressively scanned, the first frame 150 is first shown, is shown after second frame 160, the first frame 150 with
The display data of second frame 160 are although somewhat different, but the grayscale that can reach picture is shown.
Furthermore, it is necessary to realize that the picture of four grayscale of the monochromatic PMOLED display panel of 42*128 resolution ratio is shown, i.e., will
It is that the corresponding memory module of the display panel of 128*128 is divided into three equal parts with resolution ratio, it should be noted that wherein every part
Storage size be 42*128bit, there are also the redundancies of 2*128bit.Pass through the driving method of the display panel of above-mentioned three grayscale
It can release, the memory module is divided into three equal parts and obtains 4 grayscale values, also obtains first frame, the second frame and third
The corresponding memory module of frame, wherein the grayscale value is respectively 0,1,2,3, and corresponding display data can be expressed as 3 '
B000,3 ' b001,3 ' b011,3 ' b111, the display data that grayscale value is 0 are 000, and the display data that grayscale value is 1 are 001,
The display data that grayscale value is 3 are 111, and the display data of the corresponding first frame of the grayscale value, the second frame and third frame are as follows
Shown in table:
| Gray 0 | Gray 1 | Gray 2 | Gray 3 | |
| Frame 1 | 0 | 0 | 0 | 1 |
| Frame 2 | 0 | 0 | 1 | 1 |
| Frame 3 | 0 | 1 | 1 | 1 |
Table 3
Alternatively, the lower-order digit of above-mentioned 4 grayscale values is stored in first frame, remaining bits per inch is described according to being sequentially stored in
In second frame and the corresponding memory module of the third frame.
| Gray 0 | Gray 1 | Gray 2 | Gray 3 | |
| Frame 1 | 0 | 1 | 1 | 1 |
| Frame 2 | 0 | 0 | 1 | 1 |
| Frame 3 | 0 | 0 | 0 | 1 |
Table 4
The memory module of 128*128 resolution ratio is divided into after three equal parts with table 4 and obtains four kinds of grayscale values, institute by above-mentioned table 3
State the data of corresponding memory module storage in first frame, the data that corresponding memory module stores in second frame 160
And the data of corresponding memory module storage are sequentially increased in the third frame, in other words, by the display data according to one
Fixed sequence rearranges, and shows picture by every row pixel opening and closing in the every frame of scan round to obtain grayscale.
As shown in Figures 5 and 6, by taking resolution ratio is the monochromatic display panel PMOLED of 128*128 as an example, corresponding pixel
Be arranged as 128*128, in 128 rows and 128 column, COM [M] indicates to control the switch of every row pixel, COM [M] (M=0,1,
2 ..., 127) signal be low level indicate M row open display, in the case where not changing original brightness, what COM [M] was closed
COM [M+1] is opened simultaneously, under the premise of the sweep time of every row pixel is constant, by reducing the opening time of every a line,
Increase the COM signal low level non-overlapping time, the brightness of a frame can be reduced, to realize the brightness tune of the default frame
Section.The sweep time of every a line is equal, but the opening time of the row is adjustable within fixed sweep time.
If Fig. 5 and Fig. 6 comparison is it is found that n is the line number of the pixel, COM [n] drags down (unlatching) and drags down (unlatching) to COM [n+1]
Time interval is identical, but COM [n+1] is opened while COM [n] in Fig. 5 is closed；And the COM [n] in Fig. 6 opens one
It is just closed in advance after the section time, has crossed a period of time COM [n+1] and just opened.Therefore exist between COM [n] to COM [n+1]
The time that one section of two row is all closed is used to adjust the frame brightness this period.
In addition, when showing the monochromatic picture of 128*128, it is assumed that frame frequency 100Hz.After being so divided into N frame, since row scans
Time is constant, so the frame frequency of every frame becomes 100*N Hz in N frame.Show that the complete picture of a width needs N frame, frequency is
100Hz, this frequency are the sum frequencys of N frame, cannot be known as frame frequency.Frame frequency list, which refers to, all scans the pixel on screen one time
Time.As a result, by the memory module of the memory 120 of the monochromatic PNOLED display panel of arbitrary resolution be divided into N (N=2,3,
4......) the equal frame of block size for realizing the grayscale picture of the brightness linear display distribution of N+1 rank, or is realized little
It is applicable in the driving method of above-mentioned display panel in the grayscale picture that the luminance non-linearity of 2^N rank is distributed, keeps frame frequency constant
(time of all frames of run-down is constant), all default frames of scan round, can show dynamic on said display panel
The visual effect of state grayscale, details are not described herein again.
In another embodiment, the display of four grayscale of the display panel of 64*128 resolution ratio is if desired realized, it is corresponding
Grayscale value is respectively 0,1,2,3, then needs for the memory module of 128*128bit to be divided into two equal portions, 4 grayscale values corresponding
The display data of one frame and the second frame are as shown in the table:
| Gray 0 | Gray 1 | Gray 2 | Gray 3 | |
| Frame 1 | 0 | 0 | 1 | 1 |
| Frame 2 | 0 | 1 | 0 | 1 |
Table 5
As shown in fig. 7, Fig. 7 is the four grayscale display schematic diagrams for realizing the display panel of 64*128 resolution ratio, that is, pass through two
The corresponding memory module of frame realizes that four grayscale pictures are shown.In the present embodiment, for need four grayscale pictures display,
Corresponding 4 grayscale values are respectively 0,1,2,3, it is corresponding display data binary system be 00,01,10,11, according to will it is described show
The seniority top digit of registration evidence is stored in the corresponding memory module of first frame, and the lower-order digit of the display data is stored in the second frame
In corresponding memory module, wherein 01 is identical as the 10 corresponding display display brightness of data.It then needs by adjusting described
The display brightness of one frame and second frame, i.e., turn down the brightness of the first frame, the brightness of second frame is turned up, root
It is to be realized under the premise of frame frequency is constant by changing the opening time of every a line pixel according to the brightness for changing each frame
, i.e., identical with the method for above-mentioned brightness regulation, details are not described herein again.
As shown in figure 8, on the other hand, the present invention also provides a kind of driving devices 100 of display panel comprising:
Memory module is divided into N number of default frame for the resolution ratio according to the display panel and obtained by memory 120
N+1 grayscale value, N are the integer more than or equal to 2；
Controller 130 is respectively divided each display data for the grayscale value to be converted into display data
Position is stored in the default frame；
The controller 130 be also used to it is every after preset duration, by each default frame of the memory module
Brightness is adjusted.
In concrete application, the driving device of the display panel can be driving chip, and the driving chip has storage
The function of the opening and closing of the display data and control pixel of pixel, the controller is by the memory previously according to institute
The resolution ratio for stating display panel is divided into N equal portions and obtains N frame and N+1 grayscale value, by the display data of every frame according to two into
Digit processed is divided into corresponding " 0 " and " 1 ", then these display data are successively stored in every frame according to certain putting in order and are corresponded to
Memory 120 memory module in so that the corresponding grayscale value of the display data alternately displays to realize the display surface
The grayscale of plate is shown, and the opening/closing time by adjusting every row pixel in every frame, so that the brightness regulation of frame is realized, right
It needs to carry out gamma correction when the unlatching of the pixel and obtains the visual brightness of grayscale picture to show in even variation, make to show
Picture is apparent and human eye vision effect is more preferable.
In the present embodiment, by providing a kind of driving device 100 of display panel, make monochromatic PMOLED display panel
Both it can show monochromatic picture, can also show grayscale picture, the brightness non-uniformity for the display picture that original human eye is watched
Variation, and display picture it is brighter change it is insensitive, it is multiple equal by the way that the memory module of the display panel to be divided into
Part realize display to grayscale picture, then the equally distributed effect of the oculosensory brightness change of people is obtained by gamma correction
Fruit does not increase other hardware devices additionally so that the display picture of the display panel is apparent and fine and smooth on the original basis,
Use cost is also reduced to a certain extent.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention and difference be limited to this,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. a kind of driving method of display panel characterized by comprising
Memory module is divided into N number of default frame according to the resolution ratio of the display panel and obtains N+1 grayscale value, N is big
In the integer for being equal to 2；
The grayscale value is converted into display data, each display data are subjected to quartile respectively and are stored in the default frame
In；
It is every after preset duration, the brightness of each default frame of the memory module is adjusted.
2. the driving method of display panel according to claim 1, which is characterized in that described by each display data
Quartile is carried out to be stored in the default frame, comprising:
The digit of the display data is identical as the quantity of the default frame, and the display data are at least made of double figures, will
The display data are respectively stored in from low to high or from high to low in the default frame.
3. the driving method of display panel according to claim 1, which is characterized in that the preset duration is the display
The time of the secondary picture of Display panel one, the display panel is monochrome PMOLED, to each described by the way of progressive scan
Default frame is scanned display.
4. the driving method of display panel according to claim 3, which is characterized in that the display panel includes several pictures
Vegetarian refreshments, the quantity of the pixel is corresponding with the resolution ratio, and the pixel is arranged in arrays.
5. the driving method of display panel according to claim 1, which is characterized in that N is equal to 2, and the default frame includes
First frame and the second frame, correspondence obtain 0,1,2 three grayscale value, by the grayscale value be converted into display data obtain seniority top digit and
Lower-order digit, the corresponding memory module of the first frame are used to store the seniority top digit of the grayscale value, and second frame is for storing
The lower-order digit of the grayscale value；
Alternatively, the corresponding memory module of the first frame is used to store the lower-order digit of the grayscale value, second frame is for depositing
Store up the seniority top digit of the grayscale value.
6. the driving method of display panel according to claim 5, which is characterized in that the display data be one group two into
Number processed, the display data correspond to the opening and closing of the pixel on the display panel.
7. the driving method of display panel according to claim 1, which is characterized in that by each institute of the memory module
The brightness for stating default frame is adjusted, further includes:
According to the preset duration, is progressively scanned to the first frame in the default frame, reduce the every of the first frame
The opening time of a line increases the shut-in time of described every a line, obtains grayscale picture by gamma correction.
8. a kind of driving device of display panel, characterized in that it comprises:
Memory module is divided into N number of default frame for the resolution ratio according to the display panel and obtains N+1 ash by memory
Rank value, N are the integer more than or equal to 2；
Each display data are carried out quartile storage respectively for the grayscale value to be converted into display data by controller
In the default frame；
The controller is also used to every after preset duration, and the brightness of each default frame of the memory module is carried out
It adjusts.
9. the driving device of display panel according to claim 8, which is characterized in that described by each display data
Quartile is carried out to be stored in the default frame, comprising:
The digit of the display data is identical as the quantity of the default frame, and the display data are at least made of double figures, will
The display data are respectively stored in from low to high or from high to low in the default frame.
10. the driving device of display panel according to claim 8, which is characterized in that further include:
According to the preset duration, the controller reduces institute when progressively scanning to the first frame in the default frame
The opening time of every a line of first frame is stated, increases the shut-in time of described every a line, obtains grayscale picture by gamma correction.
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