CN105989792B - A kind of driving method and display panel of the display panel of current control - Google Patents
A kind of driving method and display panel of the display panel of current control Download PDFInfo
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- CN105989792B CN105989792B CN201510042081.6A CN201510042081A CN105989792B CN 105989792 B CN105989792 B CN 105989792B CN 201510042081 A CN201510042081 A CN 201510042081A CN 105989792 B CN105989792 B CN 105989792B
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Abstract
The invention discloses a kind of driving methods of the display panel of current control, applied to the display panel using OLED device, wherein, including multiple line scan signals and provide the data-signal of driving control current, each line scan signals control OLED device fluorescent lifetime described in a line, and multiple line scan signals sequences successively trigger；Each line scan signals provide the corresponding OLED device of initial signal control and shine；And the corresponding OLED device of end signal control is provided and stops shining；By adjusting the time interval between the initial signal and the end signal, the fluorescent lifetime of the corresponding OLED device is controlled.The beneficial effect of its technical solution is：By the signal for increasing control OLED device fluorescent lifetime in line scan signals, the fluorescent lifetime of OLED device, the charging time too long defect so as to cause operating lag when overcoming low-light level (low ash degree) to drive when the display of reduction low-light level (low ash degree) range requires.
Description
Technical field
The present invention relates to AMOLED, (Active Matrix Organic Light Emitting Diode active matrix has
Machine light-emitting diode) technical field more particularly to it is a kind of for AMOLED device formed display panel current control driving
Method and display panel.
Background technique
AMOLED has the characteristics that reaction speed is fast, contrast is high, visual angle is wide, and AMOLED is made to compare TFT LCD (Thin
Film Transistor Liquid Crystal Display Thin Film Transistor-LCD) there is biggish advantage；In addition
AMOLED has self luminous characteristic, is without the use of backlight, therefore can more be made frivolous than TFT LCD, and more power saving；Also
There is a prior feature, the backlight for accounting for TFT LCD cost 30%-40% can be saved without the use of the AMOLED of backlight
Module.
Existing AMOLED generallys use the mode of voltage control driving or the mode of current control driving is driven.
Wherein, difficult due to cannot accurately adjust the gray scale of display although voltage-controlled type circuit has the characteristics that fast response time
To meet the needs of display.And current control driving mode low-light level (low ash degree) drive when due to driving current it is small, make
It is too long so as to cause operating lag at the charging time.
The AMOLED driving method of current control disclosed in Chinese patent notification number CN1316443C, wherein passing through increase
One driving power is pre-charged capacitor, to overcome charging time too long defect, but due to increasing device and route,
Increase whole manufacturing cost, and is routed difficulty and increases.
Summary of the invention
For the above problem existing for existing AMOLED driving method, one kind is now provided and is intended to overcome low-light level (low ash
Degree) driving when the driving method of display panel of current control of the charging time too long defect so as to cause operating lag and aobvious
Show panel.
Specific technical solution is as follows：
A kind of driving method of the display panel of current control, applied to the display panel using OLED device, wherein packet
It includes multiple line scan signals and the data-signal of driving control current is provided, each line scan signals control described in a line
OLED device fluorescent lifetime, multiple line scan signals sequences successively trigger；
Each line scan signals provide the corresponding OLED device of initial signal control and shine；And
The corresponding OLED device of end signal control is provided to stop shining；
By adjusting the time interval between the initial signal and the end signal, the corresponding OLED device is controlled
The fluorescent lifetime of part.
Preferably, the failing edge triggering of the end signal of each line scan signals in multiple line scan signals is another
The initial signal of line scan signals.
Preferably, the line scan signals of the initial signal of another line scan signals are triggered with the failing edge of end signal
With two line scan signals are spaced between the line scan signals that are triggered.
Preferably, the failing edge triggering of the initial signal of each line scan signals in multiple line scan signals is another
The end signal of line scan signals.
Preferably, the line scan signals and quilt of the end signal of another line scan signals are triggered with the failing edge of initial signal
A line scan signals are spaced between the line scan signals of triggering.
Preferably, the first time interval T in the frame period of each line scan signals is set1；
Set a luminance threshold；
Calculating makes the OLED device reach the luminance threshold institute by closed state in the first time interval T1
The the first driving current I needed1；And
It provides one and is greater than the first driving current I1The second driving current I2And one second time interval T2, make described
OLED device is in the second time interval T2It is interior that the luminance threshold is reached by closed state；Wherein, T1*I1=T2*I2。
Preferably, by the second driving current I2It is set as the first driving current I13 times, while will be each
A first time interval T1Interior the second time interval T2It is adjusted to the first time interval T11/3.
Preferably, the first time interval T in the frame period of each scanning is set1；
Set the luminance threshold of the OLED device；
It calculates in the first time interval T1The OLED device is inside set to reach the luminance threshold institute by closed state
The the first driving current I needed1；And
Second driving current I is provided2, in the second time interval T of setting2The interior driving OLED device is by closed state
Reach the luminance threshold；
Wherein the second driving current I2Greater than the first driving current I1And the second time interval T2Less than institute
State first time interval T1。
Preferably, by the second driving current I2It is set as the first driving current I12 times, while will be at each
The first time interval T1Interior the second time interval T2It is adjusted to the first time interval T11/3.
Preferably, by the second driving current I2It is set as the first driving current I13 times, while will be at each
The first time interval T1Interior the second time interval T2It is adjusted to the first time interval T11/2.
It further include a kind of display panel, wherein using the driving method of the display panel of any of the above-described current control
It is driven.
The beneficial effect of above-mentioned technical proposal is：
By increasing the signal of control OLED device fluorescent lifetime in line scan signals, low-light level (low ash degree) model is reduced
The fluorescent lifetime of OLED device when the display enclosed requires, when being driven so as to shorten low-light level (low ash degree) range when the charging of capacitor
Between, the charging time too long defect so as to cause operating lag when overcoming low-light level (low ash degree) to drive, and do not increase aobvious
Show the whole power consumption of panel.
Detailed description of the invention
Fig. 1 is the line scan signals timing diagram of existing current control AMOLED driving method；
Fig. 2 is the line scan signals timing diagram of the driving method of the display panel of current control of the invention；
Fig. 3 is the brightness of the data-signal of existing current control AMOLED driving method and the relation curve of current strength
Figure；
Fig. 4 is the brightness and current strength of the data-signal of the driving method of the display panel of current control of the invention
Graph of relation；
Fig. 5 is the device fluorescent lifetime of existing current control AMOLED driving method and the relational graph in frame period；
Fig. 6 is the device fluorescent lifetime of the driving method of the display panel of current control of the invention and the relationship in frame period
Figure.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
A kind of driving method of the display panel of current control of the present invention, applied to the display panel using OLED device,
Wherein, the data-signal including multiple line scan signals and offer driving control current, each line scan signals control a line
The fluorescent lifetime T of OLED device, multiple line scan signals sequences successively trigger, and the line scan signals that sequence successively triggers can be realized
The progressive scan of display panel, all line scan signals complete primary triggering and form a frame cycle T F.
In existing AMOLED actuation techniques, as shown in Figure 1, line scan signals only provide one in a frame cycle T F
Pulse starts to shine to control corresponding OLED device, thus in the prior art, as shown in figure 5, OLED device is in entire frame
It is shining in cycle T F, is being required if shown in the form of improving electric current to low-light level (low ash degree) in prior art basis
Charging time compensate, then will lead to entire panel energy consumption and increase.
For this phenomenon, as shown in Fig. 2, it is corresponding to provide initial signal START control in each line scan signals
OLED device shines；And the corresponding OLED device of end signal END control is provided and stops shining；By adjusting initial signal
Time interval between START and end signal END controls the fluorescent lifetime of corresponding OLED device.
It, further, can be by each line scan signals in multiple line scan signals on the basis of above-mentioned technical proposal
The failing edge of end signal END triggers the initial signal START of another line scan signals.As a preferred embodiment,
It triggers the line scan signals of the initial signal START of another line scan signals with the failing edge of end signal END and is triggered
Two line scan signals can be spaced between line scan signals.
It, further, can be by each line scan signals in multiple line scan signals on the basis of above-mentioned technical proposal
The failing edge of initial signal START triggers the end signal END of another line scan signals.As a preferred embodiment,
It triggers the line scan signals of the end signal END of another line scan signals with the failing edge of initial signal START and is triggered
A line scan signals can be spaced between line scan signals.
On the basis of above-mentioned technical proposal, further, first in the frame period of each line scan signals can be set
Time interval T1；Set a luminance threshold F；And calculate makes OLED device reach bright by closed state in first time interval T1
Spend the first driving current I required for threshold value F1；And it provides one and is greater than the first driving current I1The second driving current I2, and
One second time interval T2, utilize the second driving current I2OLED device can be made in the second time interval T2It is interior to be reached by closed state
To luminance threshold F；Wherein, T1*I1=T2*I2。
The concrete methods of realizing of above-mentioned technical proposal is the brightness and current strength determined when a display panel is normally shown
Relation curve, and define a luminance threshold F, on relation curve be lower than luminance threshold region be defined as low intensity range,
Region higher than luminance threshold is defined as high intensity range.Herein it should be noted that the relation curve i.e. electric current in the prior art
The brightness and current strength relationship of driving method are controlled, a kind of relation curve more typical in the prior art is as shown in Figure 3.Together
When, brightness can be divided with 0-255, and in setting a median within the scope of 0-255 as luminance threshold F, certain brightness
The specific value of threshold value F can determine according to the actual needs.It, can be bent by relationship as shown in Figure 3 after setting luminance threshold F
Line computation obtains the first driving current I that the display of low intensity range in the prior art requires1。
Fluorescent lifetime i.e. the second time interval T that line scan signals require the display in low intensity range2Less than frame
Cycle T F, and the fluorescent lifetime i.e. first time interval T that the display for being maintained in high intensity range requires1Equal to frame cycle T F；
Data-signal improves driving current i.e. the second driving current I that the display in low intensity range requires2, and be maintained in highlighted
Spend the driving current that the display of range requires.By calculating the first driving current I obtained in above scheme1, the first of setting
Time interval T1, the second time interval T2And formula mentioned above can calculate the second driving current I2.Fig. 4 illustrate with
The relation curve of brightness and current strength that a kind of embodiment of above-mentioned technical proposal determines, wherein less than luminance threshold F's
When the display of low intensity range requires, the second driving current I2N times is improved, N is the natural number greater than 2.Fig. 6 illustrates above
State a kind of the second time interval T of embodiment setting of technical solution2Illustrate with the relationship of frame cycle T F, wherein bright being less than
When the display of the low intensity range of degree threshold value F requires, the second time interval T2Foreshorten to the 1/N of frame cycle T F.
Above-mentioned technical proposal is shortened by the fluorescent lifetime for requiring the display of low intensity range, and improves low intensity range
Display require data-signal control electric current current strength, realize low-light level driving when accelerate driving circuit in electricity
The charging rate of appearance is to improve the technical effect of OLED device response speed.
As a preferred embodiment, can be by the second driving current I2It is set as the first driving current I13 times, together
When can will be in each first time interval T1The second interior time interval T2It is adjusted to first time interval T11/3.
Above-mentioned technical proposal can also be set by changing, and implemented in the form of described below, set each scanning
The frame period in first time interval T1；Set the luminance threshold F of OLED device；It calculates in first time interval T1Inside make
OLED device reaches the first driving current I required for luminance threshold F as closed state1；And provide the second driving current I2, lead to
Cross the second driving current I2In the second time interval T of setting2Interior driving OLED device reaches luminance threshold F by closed state；
Wherein the second driving current I2Greater than the first driving current I1, and the second time interval T2Less than between first time
Every T1。
The embodiment does not limit the second time interval T2With first time interval T1And the second driving current I2With
One driving current I1Between ratio relation.
It, can be by the second driving current I as a kind of preferably embodiment2It is set as the first driving current I12 times, simultaneously
It can will be in each first time interval T1The second interior time interval T2It is adjusted to first time interval T11/3.
It, can also be by the second driving current I as a kind of preferably embodiment2It is set as the first driving current I13 times, together
When will be in each first time interval T1The second interior time interval T2It is adjusted to first time interval T11/2.
It further include a kind of display panel in technical solution of the present invention, wherein using the display panel of above-mentioned current control
Driving method driven.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of driving method of the display panel of current control, applied to the display panel using OLED device, feature exists
In the data-signal including multiple line scan signals and offer driving control current, each line scan signals control a line
The OLED device fluorescent lifetime, multiple line scan signals sequences successively trigger；
Each line scan signals provide the corresponding OLED device of initial signal control and shine；And
The corresponding OLED device of end signal control is provided to stop shining；
By adjusting the time interval between the initial signal and the end signal, the corresponding OLED device is controlled
Fluorescent lifetime；The failing edge of the end signal of each line scan signals in multiple line scan signals triggers another row scanning
The initial signal of signal.
2. the driving method of the display panel of current control as described in claim 1, which is characterized in that with the decline of end signal
Between between the line scan signals of the initial signal of another line scan signals of edge triggering and the line scan signals being triggered
Every two line scan signals.
3. the driving method of the display panel of current control as described in claim 1, which is characterized in that multiple row scanning letters
The failing edge of the initial signal of each line scan signals in number triggers the end signal of another line scan signals.
4. the driving method of the display panel of current control as claimed in claim 3, which is characterized in that with the decline of initial signal
One is spaced between the line scan signals of the end signal of another line scan signals of edge triggering and the line scan signals being triggered
A line scan signals.
5. the driving method of the display panel of current control as described in claim 1, which is characterized in that set each described row
First time interval T in the frame period of scanning signal1；
Set a luminance threshold；
Calculating reaches the OLED device required for the luminance threshold as closed state in the first time interval T1
The first driving current I1；And
It provides one and is greater than the first driving current I1The second driving current I2And one second time interval T2, make the OLED
Device is in the second time interval T2It is interior that the luminance threshold is reached by closed state；Wherein, T1*I1=T2*I2。
6. the driving method of the display panel of current control as claimed in claim 5, which is characterized in that by the second driving electricity
Flow I2It is set as the first driving current I13 times, while will be in each first time interval T1Interior described second
Time interval T2It is adjusted to the first time interval T11/3.
7. the driving method of the display panel of current control as described in claim 1, which is characterized in that set each scanning
First time interval T in the frame period1；
Set the luminance threshold of the OLED device；
It calculates in the first time interval T1Reach the OLED device required for the luminance threshold as closed state
First driving current I1；And
Second driving current I is provided2, in the second time interval T of setting2The interior driving OLED device is reached by closed state
The luminance threshold；
Wherein the second driving current I2Greater than the first driving current I1And the second time interval T2Less than described
One time interval T1。
8. the driving method of the display panel of current control as claimed in claim 7, which is characterized in that by the second driving electricity
Flow I2It is set as the first driving current I12 times, while will be in each first time interval T1When interior described second
Between be spaced T2It is adjusted to the first time interval T11/3.
9. the driving method of the display panel of current control as claimed in claim 7, which is characterized in that by the second driving electricity
Flow I2It is set as the first driving current I13 times, while will be in each first time interval T1When interior described second
Between be spaced T2It is adjusted to the first time interval T11/2.
10. a kind of display panel, which is characterized in that using the display panel of the current control as described in any in claim 1-9
Driving method driven.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042081.6A CN105989792B (en) | 2015-01-27 | 2015-01-27 | A kind of driving method and display panel of the display panel of current control |
| TW105100365A TW201627970A (en) | 2015-01-27 | 2016-01-07 | Driving method of current controlling OLED display panel and a display panel applying the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510042081.6A CN105989792B (en) | 2015-01-27 | 2015-01-27 | A kind of driving method and display panel of the display panel of current control |
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| CN105989792A CN105989792A (en) | 2016-10-05 |
| CN105989792B true CN105989792B (en) | 2018-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI640971B (en) * | 2018-01-04 | 2018-11-11 | 友達光電股份有限公司 | Display device and driving method thereof |
| CN108227287B (en) | 2018-01-26 | 2019-12-17 | 京东方科技集团股份有限公司 | display device, virtual reality display apparatus, and control method thereof |
| CN112820236B (en) * | 2019-10-30 | 2022-04-12 | 京东方科技集团股份有限公司 | Pixel driving circuit, driving method thereof, display panel and display device |
| CN112767872A (en) * | 2019-11-01 | 2021-05-07 | 京东方科技集团股份有限公司 | Pixel driving chip, driving method thereof and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7129918B2 (en) * | 2000-03-10 | 2006-10-31 | Semiconductor Energy Laboratory Co., Ltd. | Electronic device and method of driving electronic device |
| JP2002351430A (en) * | 2001-05-30 | 2002-12-06 | Mitsubishi Electric Corp | Display device |
| TW569173B (en) * | 2002-08-05 | 2004-01-01 | Etoms Electronics Corp | Driver for controlling display cycle of OLED and its method |
| KR100876245B1 (en) * | 2007-04-05 | 2008-12-26 | 삼성모바일디스플레이주식회사 | Organic electroluminescent display and image correction method |
| CN101499237A (en) * | 2008-01-29 | 2009-08-05 | 昆山维信诺显示技术有限公司 | Driving method and circuit for organic electroluminescent device |
| JP2010020034A (en) * | 2008-07-10 | 2010-01-28 | Sony Corp | Image display device |
| CN104167175B (en) * | 2014-08-06 | 2016-08-31 | 上海和辉光电有限公司 | Oled |
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Address after: 201506, building two, building 100, 1, Jinshan Industrial Road, 208, Shanghai, Jinshan District Patentee after: Shanghai Hehui optoelectronic Co., Ltd Address before: 201506, building two, building 100, 1, Jinshan Industrial Road, 208, Shanghai, Jinshan District Patentee before: EverDisplay Optronics (Shanghai) Ltd. |
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