CN109166516A - Driving unit, display panel and its driving method and display device - Google Patents
Driving unit, display panel and its driving method and display device Download PDFInfo
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- CN109166516A CN109166516A CN201811342365.7A CN201811342365A CN109166516A CN 109166516 A CN109166516 A CN 109166516A CN 201811342365 A CN201811342365 A CN 201811342365A CN 109166516 A CN109166516 A CN 109166516A
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- grid line
- control signal
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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
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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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
Abstract
This disclosure relates to a kind of driving unit for display panel, the display panel includes gate driving circuit and N row grid line, and the gate driving circuit provides scanning signal to the N row grid line, and N is positive integer, wherein, the driving unit includes: at least one processor；And memory, the memory are stored with instruction, when executed, at least one processor is configured that the position of the grid line to be scanned in determining N row grid line；Control signal is determined according to the position of determining grid line to be scanned；And signal will be controlled and be output to gate driving circuit so that scanning signal of the gate driving circuit according to the control signal generation for grid line to be scanned.
Description
Technical field
This disclosure relates to field of display technology, more particularly, to a kind of driving unit, a kind of display panel and its driving
Method and a kind of display device.
Background technique
Display device can be using the method for refreshing of progressive scan, i.e. pixel unit or sub-pixel unit is by line by line
It opens, and the row duration scanning H of every a line is equal.For example, H is about 1/ (fframe* N), wherein fframeTo show frame
Frequently, N is total line number of pixel unit in display panel.
However, the area with display panel increases, there is inhomogenous be a technical problem to be solved urgently in display picture.
Summary of the invention
The present disclosure proposes a kind of driving unit, a kind of display panel and its driving method and a kind of display devices.
According to one aspect of the disclosure, a kind of driving unit for display panel, the display panel packet are proposed
Gate driving circuit and N row grid line are included, the gate driving circuit provides scanning signal to the N row grid line, and N is positive integer,
Wherein, the driving unit includes:
At least one processor；And
Memory, the memory are stored with instruction, and when executed, at least one processor is configured that
Determine the position of the grid line to be scanned in N row grid line；
Control signal is determined according to the position of determining grid line to be scanned；And
The control signal is output to the gate driving circuit so that gate driving circuit is according to the control signal
Generate the scanning signal for being directed to the grid line to be scanned.
For example, at least one described processor, which is configured that, determines the control signal, so that the control signal is pulse
Signal, the pulse width of the pulse signal are associated with the position of row locating for the grid line to be scanned；And it will be identified
Control signal is output to the gate driving circuit, so that identified control signal is used as clock by the gate driving circuit
Signal, for generating the scanning signal for being directed to the grid line to be scanned.
For example, the N row grid line is divided into multiple subregions, each subregion in the multiple subregion includes a line grid line
Or adjacent multirow grid line, at least one described processor, which is configured that, determines there is association pulse width for each subregion
Corresponding control signal, so that generating the scanning signal with duration scanning of not going together for each subregion.
For example, at least one described processor is configured that the pulse width for determining the control signal, so that the N row
The sum of row duration scanning of the scanning signal of grid line is H × N, wherein row duration scanning on the basis of H.
For example, the display panel further includes source electrode drive circuit；At least one described processor is arranged such that described
Pulse width for the corresponding control signal of each subregion is linear at a distance from each subregion to source electrode drive circuit
Relationship or non-linear relation.
For example, the non-linear relation includes parabolic relation or exponential relationship.
For example, the non-linear relation is represented as:
Wherein, PwFor the pulse width of the control signal, x be distance of the correspondence subregion to source electrode drive circuit, x=1,
2 ... N, A are preset constant.
According to the another aspect of the embodiment of the present disclosure, a kind of display panel is provided, comprising:
Source electrode drive circuit；
Gate driving circuit；
N row grid line, wherein N is positive integer；And
According to the driving unit of the embodiment of the present disclosure.
According to the another aspect of the embodiment of the present disclosure, a kind of display device is provided, including according to the embodiment of the present disclosure
Display panel.
According to the another aspect of the embodiment of the present disclosure, a kind of driving of display panel according to the embodiment of the present disclosure is provided
Method, comprising:
Determine the position of the grid line to be scanned in N row grid line；
Control signal is determined according to the position signal of determining grid line to be scanned；And
The control signal is output to the gate driving circuit so that the gate driving circuit is according to the control
Signal generates the scanning signal for being directed to the grid line to be scanned.
For example, the determining control signal includes: so that the control signal is pulse signal, the arteries and veins of the pulse signal
It is associated with the position of row locating for the grid line to be scanned to rush width；And described the control signal is output to the grid
Driving circuit includes: that identified control signal is output to the gate driving circuit, so that the gate driving circuit will
Identified control signal is used as clock signal, for generating the scanning signal for being directed to the grid line to be scanned.
For example, the N row grid line is divided into multiple subregions, each subregion in the multiple subregion includes a line grid line
Or adjacent multirow grid line；The method also includes: the corresponding control letter with association pulse width is determined for each subregion
Number, so that generating the scanning signal with duration scanning of not going together for each subregion.
For example, the pulse width of the control signal is determined, so that the row scanning of the scanning signal of the N row grid line continues
The sum of time is H × N, wherein row duration scanning on the basis of H.
For example, for the pulse width and each subregion to the source drive of the corresponding control signal of each subregion
The distance of circuit is linear relationship or non-linear relation.
For example, the non-linear relation is represented as:
Wherein, PwFor the pulse width of the control signal, x be distance of the correspondence subregion to source electrode drive circuit, x=1,
2 ... N, A are preset constant.
According to the technical solution of open embodiment, a kind of driving unit for display panel is provided, it can be according to wanting
The position of the grid line of scanning to determine the pulse width of control signal, which is used as generate corresponding scanning signal when
Clock signal, thus the row duration scanning of scanning signal.Therefore, it can be avoided source electrode of the distance as display data signal source
There is charge rate deficiency in the farther away pixel unit of driving circuit, further improves the quality of display picture.
Detailed description of the invention
By illustrating the embodiment of the present disclosure with reference to the accompanying drawing, above and other purpose, the spy of the embodiment of the present disclosure will be made
Advantage of seeking peace is clearer.It should be noted that running through attached drawing, identical element is indicated by same or similar appended drawing reference.In figure:
Fig. 1 shows the structural schematic diagram of the driving unit according to the embodiment of the present disclosure；
Fig. 2 shows the structural schematic diagrams according to the display panel of the embodiment of the present disclosure；
Fig. 3 shows a kind of flow chart of the driving method of display panel according to the embodiment of the present disclosure；
Fig. 4 shows a kind of exemplary schematic diagram according to the embodiment of the present disclosure；
Fig. 5 shows the subregion schematic diagram according to the display panel of the embodiment of the present disclosure；
Fig. 6 shows a kind of display panel according to the embodiment of the present disclosure and conventional display panels comparison schematic diagram；
Fig. 7 shows another kind according to the display panel of the embodiment of the present disclosure and the comparison schematic diagram of conventional display panels；
Fig. 8 shows the schematic diagram for generating control signal using high frequency clock according to the embodiment of the present disclosure；And
Fig. 9 shows the structural schematic diagram of the display device according to the embodiment of the present disclosure.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present disclosure clearer, below in conjunction with the embodiment of the present disclosure
In attached drawing, clear, complete description is carried out to the technical solution in the embodiment of the present disclosure.Obviously, described embodiment is
A part of this disclosure embodiment, rather than all.Based on the described embodiment of the present disclosure, those of ordinary skill in the art exist
The every other embodiment obtained under the premise of without creative work belongs to the range of disclosure protection.It is described below
In, some specific embodiments are used for description purposes only, and should not be construed has an any restrictions to the disclosure, and the only disclosure
The example of embodiment.When may cause understanding of this disclosure and cause to obscure, conventional structure or construction will be omitted.It should be noted that
The shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the content of the embodiment of the present disclosure.
Unless otherwise defined, the technical term or scientific term that the embodiment of the present disclosure uses should be those skilled in the art
The ordinary meaning understood." first ", " second " used in the embodiment of the present disclosure and similar word are not offered as any suitable
Sequence, quantity or importance, and be only intended to distinguish different component parts.
In addition, term " being connected to " or " connected " can refer to that two components are direct in the description of the embodiment of the present disclosure
Connection may also mean that and be connected between two components via one or more other assemblies.In addition, the two components can pass through
Wired or wireless way is connected or is coupled.
Such as Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) or liquid crystal display
The display device of (Liquid Crystal Display, LCD) generallys use the method for refreshing of progressive scan, i.e., in display panel
Pixel unit or sub-pixel unit opened line by line, and the row duration scanning H of every a line is equal, and H is about 1/
(fframe* N), wherein fframeFor the display frame frequency of display panel, such as 60Hz, N is total line number of pixel unit in display panel.
It has been found that as the size of display panel constantly increases and resolution ratio is constantly promoted, by routing resistance and
The factors such as coupled capacitor influence, the distance pixel list closer as the source electrode drive circuit in display data signal source on display panel
The charge rate of member is higher, and the charge rate apart from the farther away pixel unit of source electrode drive circuit is insufficient, this causes to show that picture goes out
Existing inhomogenous phenomenon.Overdrive technique (Overdrive) is by searching for table (LookUp Table, LUT) to pixel unit
Data voltage carries out compensation of overdriving, so as to alleviate the phenomenon of charge rate deficiency.However, overdrive technique will increase display
The power consumption of panel.
Fig. 1 shows a kind of structural schematic diagram of driving unit according to the embodiment of the present disclosure.As shown in Figure 1, driving is single
Member 100 can be a kind of driving unit for display panel.Driving unit 100 may include at least one 101 He of processor
Memory 102.Memory 102 is stored with instruction, at least one processor 101 be configured as execute described instruction when so as to:
Determine the position of the grid line to be scanned in N row grid line, wherein N is positive integer；
Control signal is determined according to the position of determining grid line to be scanned；And
Signal will be controlled and be output to the gate driving circuit of display panel so that gate driving circuit is produced according to control signal
The raw scanning signal for being directed to grid line to be scanned.
According to the embodiment of the present disclosure, determine control signal so as to grid according to the position of grid line to be scanned in display panel
Driving circuit is controlled, so that gate driving circuit generates corresponding scanning signal, not only can effectively promote display picture
Homogeneity, and not will increase the power consumption of display panel.
According to the another aspect of the embodiment of the present disclosure, a kind of display panel is provided.Fig. 2 shows a kind of according to the disclosure
The structural schematic diagram of the display panel 20 of embodiment.As shown in Fig. 2, the display panel 20 according to the embodiment of the present disclosure may include
Source electrode drive circuit 201, gate driving circuit 202；N row grid line G1~GN, N is positive integer；And according to the embodiment of the present disclosure
Driving unit 200.Driving unit 200 is according to determining grid line G to be scannednPosition determine control signal CONT, and will control
Signal CONT is output to gate driving circuit 202 so that gate driving circuit 202 is generated according to control signal for grid to be scanned
Line GnScanning signal.
It will be understood by those skilled in the art that driving unit 200 can be located at the inside of display panel 20, can also be located at
The outside of display panel 20, the embodiment of the present disclosure are defined not to this.
As shown in Fig. 2, source electrode drive circuit 201 is to pixel unit PmnDisplay data signal D is provided1~DM, and to grid
Pole driving circuit 202 provides various signals with the operation of control gate drive circuit 202.It will be understood by those skilled in the art that
Although driving unit 200 and source electrode drive circuit 201 are shown as isolated component in Fig. 2, source drive electricity also can use
Road 201 realizes that the function of driving unit 200, the embodiment of the present disclosure are defined not to this.
In addition, being shown it will be understood by those skilled in the art that can be OLED according to the display panel 20 of the embodiment of the present disclosure
Show panel, is also possible to LCD display panel, or there are other insufficient classes of pixel unit charge rate in the display panel areas of part
The display panel of type.
According to the another aspect of the embodiment of the present disclosure, a kind of driving method of display panel is provided, for example, the display
Panel can be the display panel according to the embodiment of the present disclosure.Fig. 3 shows a kind of display panel according to the embodiment of the present disclosure
Driving method flow chart.As shown in figure 3, according to the driving method 30 of the display panel of the embodiment of the present disclosure may include with
Lower step.
In step S301, the position of the grid line to be scanned in N row grid line is determined, wherein N is positive integer.
In step S302, control signal is determined according to the position of determining grid line to be scanned.
In step S303, the control signal is output to gate driving circuit so that gate driving circuit is according to the control
Signal processed generates the scanning signal for being directed to grid line to be scanned.
According to the embodiment of the present disclosure, control signal can be determined, so that control signal is pulse signal and the pulse is believed
Number pulse width it is associated with the position of row locating for grid line to be scanned.It will be understood by those skilled in the art that term here
" pulse width " refers to the significant level duration of pulse signal.In following example by " significant level " be high level for into
Row description.In addition, it will be understood by those skilled in the art that term " pulse signal " here refers to that duty ratio and frequency are fixed
Cyclical signal.For example, the square-wave signal that duty ratio is 50%, that is, the significant level duration is the 50% of signal period.
In addition, identified control signal is output to gate driving circuit, so that gate driving circuit will be identified
It controls signal and is used as clock signal, for generating the scanning signal for being directed to the grid line to be scanned.For example, can be by display panel
Including N row grid line be divided into multiple subregions, each subregion includes a line grid line or adjacent multirow grid line, and for each point
Area determines the control signal with different pulse widths.
Fig. 4 shows a kind of schematic diagram of display example partitions according to the embodiment of the present disclosure.As shown in figure 4, showing
In panel 40, driving unit 400 is connected by wiring 406 with source electrode drive circuit 401, then passes through wiring 405 and display panel
In pixel unit be connected.Display panel 40 is divided multiple subregions, for example, according to source electrode drive circuit 401 distance by
It is cumulative greatly may include subregion A1, subregion A2 ... subregion Ai...... subregion AI, i and I be positive integer, 1≤i≤I.
The pulse width of the control signal CONT of each subregion is applied to by controlling, so that being directed to the scanning of each subregion
The row duration scanning of signal is different.According to from subregion A1 to the sequence of subregion AI, in subregion grid line turn-on time (that is,
Row duration scanning) it is gradually increased.For example, can be driven to grid in the case where the duty ratio for controlling signal CONT is constant
Clock signal of the control signal CONT of dynamic circuit output different cycles as the gate driving circuit, thus utilizes different pulses
Clock signal of the control signal of width as gate driving circuit, so that gate driving circuit is swept for what different subregions generated
Signal is retouched with different row duration scannings.It will be understood by those skilled in the art that due to for same subregion output one
A control signal, therefore for the grid line in same subregion, scanning signal row duration scanning having the same.
Such as in the example of fig. 4, for the control signal CONT of the subregion AI farthest apart from source electrode drive circuit 401I
Frequency be fI(Hz), by control signal CONTIClock signal clk as the scanning signal for generating subregion AII.For position
The control signal CONT of subregion Ai in the middle part of display paneliFrequency be fi(Hz), therefore, by control signal CONTiIt is used as
Generate the clock signal clk of the scanning signal of subregion Aii.For the control of the subregion A1 nearest apart from source electrode drive circuit 401
Signal CONT processed1Frequency be f1(Hz), by control signal CONT1Clock letter as the scanning signal for generating subregion A1
Number CLK1, then as the distance of subregion to source electrode drive circuit 401 increases, f1> f2> ... > fi> ... > fI-1> fI。
It will be understood by those skilled in the art that the frequency for controlling signal CONT is smaller in the case where duty ratio is constant, week
Phase is bigger, then the pulse width for controlling signal CONT is bigger, and the pulse width of clock signal clk is bigger in corresponding Fig. 4, then generates
Scanning signal row duration scanning it is bigger.This means that be expert in scanning process, the turn-on time of grid line in the subregion
Longer, the charging time of pixel unit is longer.Therefore, according to the embodiment of the present disclosure, as subregion is apart from source electrode drive circuit 401
Distance increase, the frequency of control signal CONT reduces, to extend the turn-on time of grid line in the subregion, thus extends and should
In the charging time of the connected pixel unit of grid line, vice versa.Thereby, it is possible to be used as display data sources according to pixel unit distance
The distance of source electrode drive circuit neatly adjust charging time of pixel unit.
Furthermore it is possible to by adjusting the frequency or pulse width of control signal CONT, when so that entirely showing the scanning of frame
Between remain unchanged, while extending row duration scanning apart from the farther away pixel unit of source electrode drive circuit 401, improve the picture
The charging time of plain unit, so that the display for realizing display panel is more uniform.
Fig. 5 shows a kind of example partitions of display panel, wherein the grid line in display panel is divided into 9 subregions.
As shown in figure 5, the difference of the row duration scanning of adjacent sectors can be fixed value Δ H=0.05H, wherein H in display panel
For a line duration scanning of conventional display panels under same frame rate and resolution ratio, the value of H is about 1/ (fframe* N),
fframeFor the frame rate of display panel, N is total line number of display panel.The case where one-row pixels unit corresponds to a grid line
Under, N is the grid line number of display panel.In the description of the embodiment of the present disclosure, also H is referred to as " when reference row scanning continues
Between ".It will be understood by those skilled in the art that term used in the embodiment of the present disclosure " conventional display panels " refers to for display
All grid lines in panel use the display panel of same datum row duration scanning.In addition, according to the embodiment of the present disclosure, art
Language " row duration scanning " indicates the turn-on time of the row grid line, is indicated herein with symbol t.Therefore, those skilled in the art
Member it is appreciated that following example description in, for a certain subregion scanning signal " row duration scanning " and the row grid
Pulse width (the symbol P herein of the turn-on time of line and the control signal CONT for the subregionwIndicate) in numerical value
It is upper equal.
In the example of hgure 5, the 1.2H in the region farthest apart from source electrode drive circuit represents the row scanning in the subregion and holds
Continuous time t is 1.2H.By taking Fig. 5 as an example, then frame scan duration of entire display panel are as follows:
T1=1.2H × v+1.15H × v+1.1H × v+1.05H × v+H × v+0.95H
× v+0.9H × v+0.85H × v+0.8H × v=9H × v
Wherein, v is the line number for the scan line for including in each subregion, that is, the grid line number in each subregion.For letter
Just, in the example of hgure 5, each subregion includes equal number of scan line line number.It will be understood by those skilled in the art that each
Subregion can of course include different number of scan line, that is, each subregion may include equal number of grid line or different numbers
Grid line.It will be understood by those skilled in the art that in the example of hgure 5,
The row duration scanning of every a line of conventional display panels is fixed value H, therefore, the frame of conventional display panels
Duration scanning are as follows:
T2=H × N=H × 9v=9H × v
Wherein, N is total line number of display panel.As can be seen that according to the display panel of the embodiment of the present disclosure and traditional face
The vertical interval of plate is identical, i.e. T1=T2=9H × v.
When the number of partitions reaches tens, is several hundred or even thousands of a, if using row duration scanning t as y-axis, row
Number n is as x-axis, then available one is similar to continuous function (t-n function).Row scanning for each subregion continues
Time t can be linear relationship or non-linear relation with each subregion to source electrode drive circuit distance n.As described above,
For the pulse width P of the row duration scanning t and the control signal CONT for the subregion of the scanning signal of a certain subregionw
Numerically equal, therefore, pulse width and each subregion for the corresponding control signal of each subregion are driven to source electrode
The distance of dynamic circuit may be linear relationship or non-linear relation.In being described below, in order to make it easy to understand, being held for row scanning
Continuous time t relationship between source electrode drive circuit distance n is described, it will be understood by those skilled in the art that control signal
The pulse width P of CONTwThe relationship having the same between distance n.
Fig. 6 shows the comparison schematic diagram of a kind of display panel according to the embodiment of the present disclosure and conventional display panels.Fig. 6
Example in, be 60Hz, ultra high-definition UHD resolution ratio according to the display panel of the embodiment of the present disclosure and conventional display panels.Fig. 6
In, x-axis is the distance n that grid line to be scanned arrives source electrode drive circuit, and unit is capable number, x=1,2 ... N, that is, x is
It is less than or equal to the integer of N more than or equal to 1, wherein N is the grid line sum of display panel, that is, the sum of scan line.Y-axis is that row is swept
Duration t is retouched, unit is microsecond us.In this example, equal according to the display panel of the embodiment of the present disclosure and conventional display panels
Including N=2160 row.The row duration scanning t of every a line of conventional display panels may each be about 7.4us, therefore its t-n function
CnormalFor a horizontal linear.As number of partitions increases, in the case where number of partitions is enough, according to the embodiment of the present disclosure
The t-n function C of display panel can be approximated to be a full curve, such as oblique line shown in fig. 6.Those skilled in the art can be with
Understand, if the number of partitions of display panel is less, t-n function C should be ladder-like.In addition, those skilled in the art can be with
Understand, although for the ease of in demonstration graph 6 by C and CnormalIt is shown as continuous function, the value of x is integral point.
In the example of fig. 6, for x=1,2 ... N, t-n function C cumulative andWith t-n function
CnormalIt is cumulative andBe it is equal, be equal to N × H, i.e., with for it is each exercise with identical row scanning persistently when
Between the display panel of t compare, in the case where the driving method according to the embodiment of the present disclosure, the frame scan duration is phase
With.
In the example of Fig. 6, row duration scanning t (being indicated by y-axis) with to source electrode drive circuit distance n (by x-axis table
Show) relationship with approximately linear.There can certainly be non-linear relation.No matter which kind of mode is used, according to disclosure reality
The frame scan duration of the frame scan duration and conventional display panels of applying example are all identical.
Fig. 7 shows another kind according to the display panel of the embodiment of the present disclosure and the comparison schematic diagram of conventional display panels.
Fig. 7 shows a series of parabolic type t-n function C of the display panel according to the embodiment of the present disclosure, for x=1,2,
... N, t-n function C cumulative andWith the showing using identical row duration scanning for all grid lines
Show that panel is identical.Hereinafter illustrate and derive the approximate expression of these parabolic types t-n function.
It may assume that, as the distance between row and source electrode drive circuit locating for grid line to be scanned increase, row scanning is held
Continuous time t is gradually incremented by with parabolic function, it may be assumed that
T=ax2+ bx+c, x=1,2 ... N (1)
Wherein, a, b, c are coefficient, usually preset constant.In order to illustrate simplicity, enable function t symmetrical about y-axis, then
Above formula (1) can simplify are as follows:
T=ax2+ c, x=1,2 ... N (2)
In order to guarantee for different grid lines using the vertical interval in the case of duration scanning of not going together and for institute
There is grid line identical using the vertical interval in the case of duration scanning of mutually going together, enables function t in x=1,2 ... on N
It is cumulative and equal with conventional display panels, it may be assumed that
Wherein N is the grid line sum of display panel, row duration scanning on the basis of H.It can be obtained by above formula (3):
It can be obtained by quadratic sum formula:
It brings above formula (4) into formula (2), obtains:
Under size in display panel is larger or the higher situation of resolution ratio, display panel includes more grid line, i.e. the number of N
It is worth larger.Such as the resolution ratio of 4K display panel is 4096 × 2160, N=2160 in this case, the resolution of 8K display panel
Rate is 7680 × 4320, in this case N=4320.It will be understood by those skilled in the art that the case where N is thousands of orders of magnitude
Under, above formula (5) can be reduced to
It enables:
Then available t-n function expression are as follows:
Wherein, x=1,2 ... N.
In formula (7), A is preset constant.The numerical value of A is smaller, then the exemplary waveforms of t-n function are gentler, it means that aobvious
Show the difference of the row duration scanning of grid line in the farther away subregion of source electrode drive circuit and the subregion being closer in panel
Δ H is smaller.The numerical value of A is bigger, and exemplary waveforms are more precipitous, it means that apart from farther away point of source electrode drive circuit in display panel
The difference Δ H of the row duration scanning of grid line is bigger in area and the subregion being closer.It is approximately t=H as A → 0, i.e. phase
When in the scanning signal to the application of each grid line with same datum row duration scanning.
It in Fig. 7, respectively illustrates as A=0.5, A=1, A=1.5, A=2, corresponding t-n function C1、C2、C3And C4's
The t-n function C of waveform signal and conventional display panelsnormalWaveform signal.According to the embodiment of the present disclosure, for x=1,
2 ... N,
The sum of row duration scanning in the case of this five kinds remains unchanged, that is, the frame scan duration is identical.
In practical applications, can according to the frame rate of display panel, resolution ratio, panel size, process uniformity etc. because
The numerical value of A is usually set.For example, the frame rate of display panel is bigger or the resolution ratio of display panel is higher, each pixel list
The charging time of member is shorter, this is affected for the charge rate apart from the farther away pixel unit of source electrode drive circuit, therefore can
Suitably to increase the value of A.In addition, the size of display panel is bigger, the influence of routing resistance and coupled capacitor for charge rate increases
Greatly, show that the homogeneity of picture is poorer, therefore biggish A value is conducive to show the homogeneity of picture.In addition, if display panel
The technique of half screen up and down it is inhomogenous, the charge rate of compensation pixel unit can also be carried out by adjusting A value.
Embodiment above describes in the way of linear approximate relationship and approximate non-linear relationship, according in display panel
The row duration scanning of the grid line is arranged to the distance of source electrode drive circuit for grid line, it will be understood by those skilled in the art that
The embodiment of the present disclosure is not limited thereto, and can also include other situations of such as exponential function form.
It will be understood by those skilled in the art that as described above, when the row scanning for the scanning signal of a certain subregion continues
Between t with for the subregion control signal CONT pulse width PwTherefore numerically equal controls the pulse width of signal
PwIt is closed with equally having above-mentioned linear approximate relationship and approximate non-linear in display panel at a distance from grid line to source electrode drive circuit
System.For example, formula (7) can also be expressed as
Wherein, PwFor the pulse width of the control signal, x be distance of the correspondence subregion to source electrode drive circuit, x=1,
2 ... N, A are preset constant
It therefore, can be according to the pulse width P for flexibly determining control signal by the numerical value that A is arrangedw, which is believed
Number be used as generates for the subregion scanning signal clock signal so that generate scanning signal have desired by
Row duration scanning t.
Fig. 8 shows the schematic diagram for generating control signal using high frequency clock according to the embodiment of the present disclosure.Wherein with Fig. 6 institute
Show and display panel is divided into for 9 subregions.As shown in figure 8, the pulse width P of control signalw(that is, it is desirable to row scanning
Duration t) range is 0.8H to 1.2H, and step value Δ H is 0.05H, then can use period p=0.05H high frequency clock,
High frequency clock is divided by way of counting to generate the control signal for each subregion.
For example, the region for being 0.8H for row duration scanning, when the pulse width of corresponding control signal is high frequency
16 times of the period p of clock.Driving unit is configurable to include counter, and the count value count of counter is initially 0, every
The rising edge of high frequency clock, count value count=count+1 drag down the level for controlling signal, thus as count=16
Realize that pulse width is the control signal of 0.8H.Similarly, the count value count of counter is initially 0, repeats above operation,
As count=17, the level for controlling signal is dragged down, then the subregion that can be 0.85H for row duration scanning generates
Pulse width is the control signal of 0.85H.Similarly, the control signal that pulse width is 0.9H~1.2H can be generated.
A kind of specific implementation example is that a high-frequency crystal oscillator clock can be introduced.When a frame of display panel is shown
After, control signal is resetted.After driving unit receives the high frequency clock signal from the high-frequency crystal oscillator, in driving unit
Counter start counting, after count value reaches a certain preset value, according to current line number, will believe for the control of respective partition
Number level dragged down, then produce for the subregion control signal.
According to the embodiment of the present disclosure, a kind of display device is additionally provided.Fig. 9 shows the display according to the embodiment of the present disclosure
The structural schematic diagram of device 90.As shown in figure 9, may include according to disclosure reality according to the display device 90 of the embodiment of the present disclosure
Apply the display panel 910 of example.It can be Electronic Paper, mobile phone, tablet computer, TV according to the display device 90 of the embodiment of the present disclosure
Any products or components having a display function such as machine, display, laptop, Digital Frame, navigator.
It should be noted that in the above description, only in an illustrative manner, showing the technical side of the embodiment of the present disclosure
Case, but it is not meant to that the embodiment of the present disclosure is confined to above-mentioned steps and structure.In a likely scenario, it can according to need pair
Step and structure are adjusted and accept or reject.Therefore, certain steps and unit are not the overall thought institute for implementing the embodiment of the present disclosure
Required element.
So far preferred embodiment is had been combined the disclosure is described.It should be understood that those skilled in the art are not
In the case where the spirit and scope for being detached from the embodiment of the present disclosure, various other changes, replacement and addition can be carried out.Therefore,
The range of the embodiment of the present disclosure is not limited to above-mentioned specific embodiment, and should be defined by the appended claims.
Claims (15)
1. a kind of driving unit for display panel, the display panel includes gate driving circuit and N row grid line, the grid
Pole driving circuit provides scanning signal to the N row grid line, and N is positive integer, wherein the driving unit includes:
At least one processor；And
Memory, the memory are stored with instruction, and when executed, at least one processor is configured that
Determine the position of the grid line to be scanned in N row grid line；
Control signal is determined according to the position of determining grid line to be scanned；And
The control signal is output to the gate driving circuit so that gate driving circuit is generated according to the control signal
For the scanning signal of the grid line to be scanned.
2. driving unit according to claim 1, wherein at least one described processor is configured that
Determine the control signal so that the control signal be pulse signal, the pulse width of the pulse signal with it is described
The position of row locating for grid line to be scanned is associated；And
Identified control signal is output to the gate driving circuit, so that the gate driving circuit is by identified control
Signal processed is used as clock signal, for generating the scanning signal for being directed to the grid line to be scanned.
3. driving unit according to claim 1 or 2, wherein the N row grid line is divided into multiple subregions, described more
Each subregion in a subregion includes a line grid line or adjacent multirow grid line, at least one described processor is configured that
The corresponding control signal with association pulse width is determined for each subregion, so that generating for each subregion has not
The scanning signal of colleague's duration scanning.
4. driving unit according to claim 3, wherein at least one described processor, which is configured that, determines the control
The pulse width of signal, so that the sum of row duration scanning of scanning signal of the N row grid line is H × N, wherein H is base
There won't be any problem duration scanning.
5. driving unit according to claim 4, wherein the display panel further includes source electrode drive circuit；It is described extremely
A few processor is configured that
So that the pulse width of the corresponding control signal for each subregion and each subregion to source electrode drive circuit
Distance be linear relationship or non-linear relation.
6. driving unit according to claim 5, wherein the non-linear relation includes that parabolic relation or index close
System.
7. driving unit according to claim 6, wherein the non-linear relation is represented as:
Wherein, PwFor the pulse width of the control signal, x be distance of the correspondence subregion to source electrode drive circuit, x=1,
2 ... N, A are preset constant.
8. a kind of display panel, comprising:
Source electrode drive circuit；
Gate driving circuit；
N row grid line, wherein N is positive integer；And
Driving unit as described in one of claim 1 to 7.
9. a kind of display device, including display panel as claimed in claim 8.
10. a kind of driving method of display panel as claimed in claim 8, comprising:
Determine the position of the grid line to be scanned in N row grid line；
Control signal is determined according to the position signal of determining grid line to be scanned；And
The control signal is output to the gate driving circuit so that the gate driving circuit is according to the control signal
Generate the scanning signal for being directed to the grid line to be scanned.
11. driving method according to claim 10, wherein the determining control signal includes: so that the control is believed
It number is pulse signal, the pulse width of the pulse signal is associated with the position of row locating for the grid line to be scanned；And
It is described by the control signal be output to the gate driving circuit include: identified control signal is output to it is described
Gate driving circuit is directed to so that identified control signal is used as clock signal by the gate driving circuit for generating
The scanning signal of the grid line to be scanned.
12. driving method described in 0 or 11 according to claim 1, wherein the N row grid line is divided into multiple subregions, described
Each subregion in multiple subregions includes a line grid line or adjacent multirow grid line；
The method also includes: the corresponding control signal with association pulse width is determined for each subregion, so that for every
A subregion generates the scanning signal with duration scanning of not going together.
13. driving method according to claim 12, wherein the pulse width for determining the control signal, so that the N
The sum of row duration scanning of the scanning signal of row grid line is H × N, wherein row duration scanning on the basis of H.
14. driving method according to claim 13, wherein for the pulse width of the corresponding control signal of each subregion
With at a distance from each subregion to the source electrode drive circuit be linear relationship or non-linear relation.
15. driving method according to claim 14, wherein the non-linear relation is represented as:
Wherein, PwFor the pulse width of the control signal, x be distance of the correspondence subregion to source electrode drive circuit, x=1,
2 ... N, A are preset constant.
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