CN109616055A - Driving method, device and the display device of display panel - Google Patents
Driving method, device and the display device of display panel Download PDFInfo
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- CN109616055A CN109616055A CN201811579850.6A CN201811579850A CN109616055A CN 109616055 A CN109616055 A CN 109616055A CN 201811579850 A CN201811579850 A CN 201811579850A CN 109616055 A CN109616055 A CN 109616055A
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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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- 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]
- G09G3/3275—Details of drivers for data electrodes
Abstract
This application involves a kind of driving method of display panel, device and display devices.The driving method of the display panel is used to improve the gray level accuracy of display panel, the driving method of the display panel includes: the output twice sweep signal in each sub- time quantum, wherein, time needed for completing a frame graphical display is made of more than two sub- time quantums, first time scanning signal is defined as the first scanning signal, second of scanning signal is defined as the second scanning signal；Current potential in response to first scanning signal is the transistor turns for making control, and input can make the first data-signal of display panel the first predetermined luminance of sending；Current potential in response to second scanning signal is the transistor turns for making control, and input can make the second data-signal of the second predetermined luminance of the display panel sending.The application can make up display panel and cause gray level accuracy not high so that the problem of picture brightness brightness disproportionation since processing procedure difference and voltage magnitude are not easy to be precisely controlled.
Description
Technical field
This application involves field of display technology, more particularly to the driving method and device of a kind of display panel.
Background technique
Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) can be divided into passively according to driving method
Formula matrix driving (Passive Matrix OLED, PMOLED) and active-matrix driving (Active Matrix OLED,
AMOLED) two kinds.Wherein, PMOLED is only to shine in data address period, and when data are not written does not shine.This driving
Mode structure is simple, cost is relatively low, is easier to design, and is primarily adapted for use in the display device of small-medium size.
Flow through the electric current I of OLED deviceoledThe size of amplitude is by the voltage V on data linedataIt determines, when data line is sent
Voltage value out is higher, electric current IoledIt is bigger, on the contrary electric current IoledIt will become smaller.By controlling VdataAmplitude reaches adjustment in turn
The light emission luminance and gray scale control of OLED.But this mode generally can be not easy to be precisely controlled because of processing procedure difference and voltage magnitude
And cause gray level accuracy not high so that picture brightness brightness disproportionation defect, picture can not be also precisely controlled required
Grayscale.
Summary of the invention
Based on this, it is necessary to be not easy to cause grayscale due to being precisely controlled for the processing procedure difference and voltage magnitude because of display panel
Precision is not high so that the problem of picture brightness brightness disproportionation, provides the driving method, device and display of a kind of display panel
Device.
A kind of driving method of display panel, for improving the gray level accuracy of display panel, which is characterized in that the display
The driving method of panel includes:
In each sub- time quantum export twice sweep signal, wherein complete a frame graphical display needed for the time by
More than two sub- time quantum compositions, are defined as the first scanning signal for first time scanning signal, will scan for second
Signal definition is the second scanning signal；
Current potential in response to first scanning signal is the transistor turns for making control, and input can make the display panel
Issue the first data-signal of the first predetermined luminance；
Current potential in response to second scanning signal is the transistor turns for making control, and input can make the display panel
Issue the second data-signal of the second predetermined luminance.
The driving method of the display panel in one of the embodiments, further include:
The voltage value of first data-signal and second data-signal is adjusted finely to divide the display surface
The grayscale of plate.
The voltage value of first data-signal is greater than the electricity of second data-signal in one of the embodiments,
Press numerical value.
The voltage value of first data-signal is less than the electricity of second data-signal in one of the embodiments,
Press numerical value.
The voltage value of first data-signal is equal to the electricity of second data-signal in one of the embodiments,
Press numerical value.
The current potential high level of the transistor turns for making control in one of the embodiments,.
The voltage value of first data-signal is 4V-10V in one of the embodiments,.
A kind of driving device of display panel, comprising:
Scanning signal output unit, for exporting twice sweep signal in each sub- time quantum, wherein complete a frame
Time needed for graphical display is made of more than two sub- time quantums, and first time scanning signal is defined as first and is swept
Signal is retouched, second of scanning signal is defined as the second scanning signal；
First data-signal output unit, the current potential in response to first scanning signal are to lead the transistor of control
Logical, input can make the first data-signal of the first predetermined luminance of the display panel sending；
Second data-signal output unit, the current potential in response to second scanning signal are to lead the transistor of control
Logical, input can make the second data-signal of the second predetermined luminance of the display panel sending.
The driving device of the display panel in one of the embodiments, further include:
Adjustment unit, for adjusting the voltage value of first data-signal and second data-signal finely to draw
Divide the grayscale of the display panel.
A kind of display device, the driving device including the display panel as described in aforementioned.
The driving method of above-mentioned display panel, by exporting twice sweep signal in each sub- time quantum, wherein complete
It is made of at the time needed for a frame graphical display more than two sub- time quantums, first time scanning signal is defined as
Second of scanning signal is defined as the second scanning signal by the first scanning signal；Current potential in response to the first scanning signal is to make
The transistor turns of control, input can make the first data-signal of display panel the first predetermined luminance of sending；It is swept in response to second
The current potential for retouching signal is the transistor turns for making control, and the second data that input can make display panel issue the second predetermined luminance are believed
Number.By then exporting the time fining point of a frame twice sweep signal in each sub- time quantum, finally existing respectively
The current potential of twice sweep signal is when making the transistor turns of control, and input can make display panel issue the first predetermined luminance
It can by the light mixing effect of the first predetermined luminance and the second predetermined luminance in time with the data-signal of the second predetermined luminance
So that the grayscale after splitting is more accurate, and can be according to the adjustment of the voltage value of data-signal and the number of sub- time quantum
And produce new gray-scale intensity, so as to making up display panel since processing procedure difference and voltage magnitude are not easy to be precisely controlled and
Cause gray level accuracy not high so that the problem of picture brightness brightness disproportionation.Further, by adjusting the first data-signal
The fine division of display panel grayscale may be implemented with the voltage value of the second data-signal.
Detailed description of the invention
Fig. 1 is the driving method flow diagram of the display panel in an embodiment；
Fig. 2 is the pixel-driving circuit schematic diagram in example technique；
Fig. 3 is the output waveform figure of the scanning signal in an embodiment；
Fig. 4 is the output waveform figure of the scanning signal and data-signal in an embodiment；
Fig. 5 is the structural schematic diagram of the driving device of the display panel in an embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the better embodiment of the application.But the application can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more disclosure of this application
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.
Fig. 2 show the structural schematic diagram of one of example technique pixel-driving circuit.The pixel-driving circuit is adopted
With " 2T1C " framework.Here 2T, that is, thin film transistor (TFT) T11 and thin film transistor (TFT) T12,1C are the grid of thin film transistor (TFT) T12
The storage capacitance C1 bridged between source electrode.Wherein, the grid of thin film transistor (TFT) T11 is electrically connected to a scanning voltage signal
Scan, source electrode are connected for receiving a data voltage signal Data, drain electrode with the grid of thin film transistor (TFT) T12.Film crystal
The source electrode of pipe T12 is electrically connected to a common voltage VDD, and drain electrode is connected to a ground voltage V via Light-emitting diode LEDSS.Hair
Optical diode LED can be Organic Light Emitting Diode OLED (Organic Light Emitting Diode).When driving shines
When, electric current is had above VDD and is flowed through, and since OLED device is organic semiconductor, and OLED device has always in the display stage
Electric current flows through, so the display brightness of OLED device can reduce under same current, while easily deteriorate, it is bad in turn result in display
Deng exception, picture can not be also precisely controlled in required grayscale.
Grayscale, be by it is most bright with it is most dark between brightness change, divide into several pieces.It is opposite in order to carry out signal input
The screen intensity control answered.Every digitized video be all as combined by many points made of, these point be also known as pixel
(pixels), usually each pixel can show many different colors, it is by red (Red), green (Green), indigo plant
(Blue) three sub-pixels form.The light source of each sub-pixel, behind can show different gray scales.And
Grayscale is represented by most secretly to the stratum level of different brightness most bright.This intermediate level is more, the picture that can be presented
Effect is also finer and smoother.By taking 8 bit display panels as an example, 28 powers, that is, 256 luminance levels can be showed, that is to say
256 common grayscale.
Referring to Fig. 1, for the driving method flow diagram of the display panel in an embodiment.The driving of the display panel
Method is used to improve the gray level accuracy of display panel.The driving method of the display panel may include step: S100-S300.
Step S100 exports twice sweep signal in each sub- time quantum, wherein completes needed for a frame graphical display
Time be made of more than two sub- time quantums, first time scanning signal is defined as the first scanning signal, by
Rescan signal definition is the second scanning signal.
Display panel may be, for example, that organic light emitting display panel that is to say OLED display panel, different from liquid crystal display panel
Place is, intermediate liquid crystal layer is omitted, but main driving method or scanning signal are opened line by line, then in every row
Input data signal, that is to say each of Fig. 3 scanning signal was opened at the failing edge moment of previous scanning signal.
Generally, scanning signal Gi is inputted line by line, that is to say that G1 to Gm with fixed sequential cycles input high level, makes the input of the row
Data-signal.After the completion of scanning signal input, the display of a frame figure is completed.Normally, a vertical interval is 1/60 second,
I.e. refreshing frequency is 60 hertz.Here time quantum needed for sweep time 1/60 second that is to say one frame graphical display of completion.
In this embodiment, which can be split, splits into more than two sub- time quantums, wherein can
To be that equal portions are split, equal portions fractionation may not be.Illustratively, for splitting into three sub- time quantums, that is to say, that
One time quantum is split into three sub- time quantums, since a time quantum is 1/60 second, so each sub- time
Unit is 1/180 second.It is appreciated that can be according to the reality of those skilled in the art for the specific fractionation number of sub- time quantum
Border needs and properties of product are selected and adjusted, and does not further limit herein.
Further, will complete a frame image show required time quantum split into more than two sub- time quantums it
Afterwards, twice sweep signal can be exported in each sub- time quantum, that is to say turntable driving voltage signal, turntable driving voltage
Signal is mainly used for controlling opening or closing for grid line.It for ease of description and distinguishes, first time scanning signal is defined as the
Second of scanning signal is defined as the second scanning signal by scan signal.
Step S200, the current potential in response to first scanning signal are the transistor turns for making control, and input can make institute
State the first data-signal that display panel issues the first predetermined luminance.
Specifically, the current potential in response to the first scanning signal is the transistor turns for making control, and transistor may be, for example, thin
Film transistor and field effect transistor, by taking thin film transistor (TFT) as an example.Current potential in response to the first scanning signal be make control it is thin
Film transistor conducting, in other words, only when the current potential of the first scanning signal is high level, thin film transistor (TFT) just receives high electricity
Flat conducting, then input can make the first data-signal of display panel the first predetermined luminance of sending.First predetermined luminance can also be with
Referred to as gray-scale intensity, wherein the specific value of the first predetermined luminance can voltage value according to the first data-signal and display
Panel is selected and is adjusted for the demand of gray level accuracy.Further, by taking grayscale value is 8 bits (0-255 grayscale) as an example,
The gray-scale intensity of display panel can also be calculate by the following formula:
Wherein, A indicates that grayscale value, B indicate grayscale value brightness, i.e. normalization brightness, the pass of the two index of coincidence power 2.2
It is formula, by tabling look-up or can determine the grayscale value brightness that needs obtain according to above-mentioned formula.
Step S300, the current potential in response to second scanning signal are the transistor turns for making control, and input can make institute
State the second data-signal that display panel issues the second predetermined luminance.
Specifically, the current potential in response to the second scanning signal is the transistor turns for making control, and transistor may be, for example, thin
Film transistor and field effect transistor, by taking thin film transistor (TFT) as an example.Current potential in response to the second scanning signal be make control it is thin
Film transistor conducting, in other words, only when the current potential of the second scanning signal is high level, thin film transistor (TFT) just receives high electricity
Flat conducting, then input can make the second data-signal of display panel the second predetermined luminance of sending.Second predetermined luminance can also be with
Referred to as gray-scale intensity, wherein the specific value of the second predetermined luminance can voltage value according to the second data-signal and display
Panel is selected and is adjusted for the demand of gray level accuracy.Further, by taking grayscale value is 8 bits (0-255 grayscale) as an example,
The gray-scale intensity of display panel can also be calculate by the following formula:
Wherein, A indicates that grayscale value, B indicate grayscale value brightness, i.e. normalization brightness, the pass of the two index of coincidence power 2.2
It is formula, by tabling look-up or can determine the grayscale value brightness that needs obtain according to above-mentioned formula.
In one embodiment, the numerical values recited of the gray-scale intensity of display panel depends primarily on the voltage number of data-signal
Value.In this embodiment, the voltage value of the first data-signal can be 4V-10V.Optionally, first data-signal
Voltage value can be 4V-6V；Optionally, the voltage value of the first data-signal can be 6V-8V；Optionally, the first data
The voltage value of signal can be 8V-10V.The voltage value of second data-signal may be 4V-10V.Optionally, the second number
It is believed that number voltage value can be 4V-6V；Optionally, the voltage value of the second data-signal can be 6V-8V；Optionally,
The voltage value of second data-signal can be 8V-10V.In this embodiment, preset display panel sending first bright
The voltage number of the voltage value of first data-signal of degree and the second data-signal for making display panel the second predetermined luminance of sending
Value can be identical, and in other words, the first predetermined luminance is identical as the second predetermined luminance.For example, the electricity of the first data-signal
The voltage value for pressing numerical value and the second data-signal is 8V.
In one embodiment, the numerical values recited of the gray-scale intensity of display panel depends primarily on the voltage number of data-signal
Value.In this embodiment, make the voltage value of the first data-signal of display panel the first predetermined luminance of sending and make to show
Show that the voltage value of the second data-signal of panel the second predetermined luminance of sending is not identical, illustratively, please assist refering to Fig. 4,
In a sub- time quantum, Gate is opened twice, and respectively g1 (the first scanning signal) and g2 (the second scanning signal) are corresponding
Data-signal (the first data-signal d1 and the second data-signal d2) twice is exported, as shown, the electricity of the first data-signal d1
Numerical value is pressed to be greater than the voltage value of the second data-signal d2, in other words, the numerical value of the first predetermined luminance is preset bright greater than second
The numerical value of degree is exactly that the first predetermined luminance is relatively brighter than the second predetermined luminance for angles of display.
In one embodiment, the numerical values recited of the gray-scale intensity of display panel depends primarily on the voltage number of data-signal
Value.In this embodiment, make the voltage value of the first data-signal of display panel the first predetermined luminance of sending and make to show
Show that the voltage value of the second data-signal of panel the second predetermined luminance of sending is not identical, illustratively, the first data-signal
Voltage value is less than the voltage value of the second data-signal, and in other words, the numerical value of the first predetermined luminance is preset bright less than second
The numerical value of degree is exactly that the first predetermined luminance is relatively more darker than the second predetermined luminance for angles of display.
Since induction frequencies of the human eye to brightness are about 30Hz, when frequency is higher than 30Hz, what human eye was felt
Brightness is the average value in 30Hz, the luminance difference generated when without experiencing frequency higher than 30Hz, also referred to as light mixing effect.?
I other words usual human eye a frame time inner sense be subject to be display panel general brightness, by taking three sub- time quantums as an example,
There are two gray-scale intensity (display brightness) in each sub- time quantum, three sub- time quantums also just there are six gray-scale intensity,
It is indicated respectively with L1, L2, L3, L4, L5, L6, the brightness i.e. L1, L2, L3, L4, L5, L6 that a final frame time shows
General brightness, also, each gray-scale intensity is adjustable, therefore the grayscale after splitting can be made more accurate, in turn
Improve picture brightness brightness disproportionation phenomenon.
The driving method of above-mentioned display panel, by exporting twice sweep signal in each sub- time quantum, wherein complete
It is made of at the time needed for a frame graphical display more than two sub- time quantums, first time scanning signal is defined as
Second of scanning signal is defined as the second scanning signal by the first scanning signal；Current potential in response to the first scanning signal is to make
The transistor turns of control, input can make the first data-signal of display panel the first predetermined luminance of sending；It is swept in response to second
The current potential for retouching signal is the transistor turns for making control, and the second data that input can make display panel issue the second predetermined luminance are believed
Number.By then exporting the time fining point of a frame twice sweep signal in each sub- time quantum, finally existing respectively
The current potential of twice sweep signal is when making the transistor turns of control, and input can make display panel issue the first predetermined luminance
It can by the light mixing effect of the first predetermined luminance and the second predetermined luminance in time with the data-signal of the second predetermined luminance
So that the grayscale after splitting is more accurate, and can be according to the adjustment of the voltage value of data-signal and the number of sub- time quantum
And produce new gray-scale intensity, so as to making up display panel since processing procedure difference and voltage magnitude are not easy to be precisely controlled and
Cause gray level accuracy not high so that the problem of picture brightness brightness disproportionation.
In one embodiment, the driving method of the display panel can with comprising steps of
The voltage value of first data-signal and second data-signal is adjusted finely to divide the display surface
The grayscale of plate.
Specifically, since the numerical values recited of the gray-scale intensity of display panel depends primarily on the voltage value of data-signal.
So can believe when the grayscale for needing to carry out display panel divides by adjusting the first data-signal and the second data
Number voltage value adjust gray-scale intensity, and then refine the grayscale for dividing display panel.
Referring to Fig. 5, the structural schematic diagram of the driving device for the display panel in an embodiment, the drive of the display panel
Dynamic device may include: scanning signal output unit 100, the first data-signal output unit 200 and the output of the second data-signal
Unit 300.Scanning signal output unit 100, for exporting twice sweep signal in each sub- time quantum, wherein complete
Time needed for one frame graphical display is made of more than two sub- time quantums, and first time scanning signal is defined as
Second of scanning signal is defined as the second scanning signal by scan signal；First data-signal output unit 200, in response to
The current potential of first scanning signal is the transistor turns for making control, and it is bright that input can be such that the display panel sending first presets
First data-signal of degree；Second data-signal output unit 300, the current potential in response to second scanning signal are to make to control
Transistor turns, input can make the display panel issue the second data-signal of the second predetermined luminance.
The driving device of above-mentioned display panel is exported in each sub- time quantum by the way that scanning signal output unit is arranged
Twice sweep signal, the first data-signal output unit and the second data-signal output unit are respectively in the electricity of twice sweep signal
When transistor turns of the position to make control, input can make display panel issue the first predetermined luminance and the second predetermined luminance
Data-signal can make the grayscale after splitting more quasi- by the light mixing effect of the first predetermined luminance and the second predetermined luminance
Really, and new gray-scale intensity can be produced according to the adjustment of the voltage value of data-signal and the number of sub- time quantum, from
And display panel can be made up and cause gray level accuracy not high since processing procedure difference and voltage magnitude are not easy to be precisely controlled and then make
The problem of obtaining picture brightness brightness disproportionation.
In this embodiment, scanning signal output unit 100 can split the time quantum, split into two
A above sub- time quantum, wherein can be equal portions fractionation, may not be equal portions fractionation.Illustratively, to split into three
For a sub- time quantum, that is to say, that a time quantum is split into three sub- time quantums, due to a time quantum
It is 1/60 second, so each sub- time quantum is 1/180 second.It is appreciated that for the specific fractionation number of sub- time quantum
It can select and adjust according to the actual needs and properties of product of those skilled in the art, not further limit herein.
Further, will complete a frame image show required time quantum split into more than two sub- time quantums it
Afterwards, scanning signal output unit 100 can export twice sweep signal in each sub- time quantum, that is to say turntable driving electricity
Signal is pressed, turntable driving voltage signal is mainly used for controlling opening or closing for grid line.It for ease of description and distinguishes, by first
Secondary scanning signal is defined as the first scanning signal, and second of scanning signal is defined as the second scanning signal.
First data-signal output unit 200 is the transistor turns for making control in response to the current potential of the first scanning signal,
Transistor may be, for example, thin film transistor (TFT) and field effect transistor, by taking thin film transistor (TFT) as an example.In response to the first scanning signal
Current potential is the thin film transistor (TFT) conducting for making control, in other words, when the current potential of the first scanning signal is high level, thin film transistor (TFT)
High level conducting is just received, then input can make the first data-signal of display panel the first predetermined luminance of sending.First is default
Brightness is referred to as gray-scale intensity, wherein the specific value of the first predetermined luminance can be according to the voltage of the first data-signal
Numerical value and display panel are selected and are adjusted for the demand of gray level accuracy.
Second data-signal output unit 300 is the transistor turns for making control in response to the current potential of the second scanning signal,
Transistor may be, for example, thin film transistor (TFT) and field effect transistor, by taking thin film transistor (TFT) as an example.In response to the first scanning signal
Current potential is the thin film transistor (TFT) conducting for making control, in other words, when the current potential of the first scanning signal is high level, thin film transistor (TFT)
High level conducting is just received, then input can make the second data-signal of display panel the second predetermined luminance of sending.Second is default
Brightness is referred to as gray-scale intensity, wherein the specific value of the second predetermined luminance can be according to the voltage of the second data-signal
Numerical value and display panel are selected and are adjusted for the demand of gray level accuracy.
In one embodiment, the driving device of the display panel can also include:
Adjustment unit, for adjusting the voltage value of the first data-signal and the second data-signal finely to divide display surface
The grayscale of plate.
Specifically, since the numerical values recited of the gray-scale intensity of display panel depends primarily on the voltage value of data-signal.
So can believe when the grayscale for needing to carry out display panel divides by adjusting the first data-signal and the second data
Number voltage value adjust gray-scale intensity, and then refine the grayscale for dividing display panel.
A kind of display device may include the driving device of the aforementioned display panel, the driving of above-mentioned display panel
That twice sweep signal, the first data-signal are exported in each sub- time quantum is defeated by the way that scanning signal output unit is arranged for device
Out unit and the second data-signal output unit respectively the current potential of twice sweep signal be make control transistor turns when
It waits, input can make display panel issue the data-signal of the first predetermined luminance and the second predetermined luminance, pass through the first predetermined luminance
With the light mixing effect of the second predetermined luminance, the grayscale after splitting can be made more accurate, and can be according to the electricity of data-signal
Pressure value adjusts the number with sub- time quantum and produces new gray-scale intensity, so as to make up display panel due to processing procedure
Difference and voltage magnitude are not easy to be precisely controlled and cause gray level accuracy not high so that the problem of picture brightness brightness disproportionation.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to claim therefore cannot be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of driving method of display panel, for improving the gray level accuracy of display panel, which is characterized in that the display surface
The driving method of plate includes:
Twice sweep signal is exported in each sub- time quantum, wherein the time needed for completing a frame graphical display is by two
Above sub- time quantum composition, is defined as the first scanning signal for first time scanning signal, by second of scanning signal
It is defined as the second scanning signal；
Current potential in response to first scanning signal is the transistor turns for making control, and input can be such that the display panel issues
First data-signal of the first predetermined luminance；
Current potential in response to second scanning signal is the transistor turns for making control, and input can be such that the display panel issues
Second data-signal of the second predetermined luminance.
2. the driving method of display panel according to claim 1, which is characterized in that further include:
The voltage value of first data-signal and second data-signal is adjusted finely to divide the display panel
Grayscale.
3. the driving method of display panel according to claim 1, which is characterized in that the voltage of first data-signal
Numerical value is greater than the voltage value of second data-signal.
4. the driving method of display panel according to claim 1, which is characterized in that the voltage of first data-signal
Numerical value is less than the voltage value of second data-signal.
5. the driving method of display panel according to claim 1, which is characterized in that the voltage of first data-signal
Numerical value is equal to the voltage value of second data-signal.
6. the driving method of display panel according to claim 1, which is characterized in that the transistor turns for making control
Current potential be high level.
7. the driving method of display panel according to claim 1, which is characterized in that the voltage of first data-signal
Numerical value is 4V-10V.
8. a kind of driving device of display panel characterized by comprising
Scanning signal output unit, for exporting twice sweep signal in each sub- time quantum, wherein complete a frame figure
Time needed for display is made of more than two sub- time quantums, and first time scanning signal is defined as the first scanning letter
Number, second of scanning signal is defined as the second scanning signal；
First data-signal output unit, the current potential in response to first scanning signal is the transistor turns for making control, defeated
Enter the first data-signal that the display panel can be made to issue the first predetermined luminance；
Second data-signal output unit, the current potential in response to second scanning signal is the transistor turns for making control, defeated
Enter the second data-signal that the display panel can be made to issue the second predetermined luminance.
9. the driving device of display panel according to claim 8, which is characterized in that further include:
Adjustment unit, for adjusting the voltage value of first data-signal and second data-signal finely to divide institute
State the grayscale of display panel.
10. a kind of display device, which is characterized in that the driving dress including such as described in any item display panels of claim 8-9
It sets.
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| CN201811579850.6A CN109616055B (en) | 2018-12-24 | 2018-12-24 | Display panel driving method and device and display device |
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| CN201811579850.6A CN109616055B (en) | 2018-12-24 | 2018-12-24 | Display panel driving method and device and display device |
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| CN111354292A (en) * | 2020-03-16 | 2020-06-30 | Oppo广东移动通信有限公司 | Pixel driving method and device, electronic device and storage medium |
| CN112201200A (en) * | 2020-10-26 | 2021-01-08 | Tcl华星光电技术有限公司 | Pixel driving circuit and display device |
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Also Published As
| Publication number | Publication date |
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| CN109616055B (en) | 2020-12-29 |
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