CN105989792A - Current-controlled display panel driving method and display panel - Google Patents
Current-controlled display panel driving method and display panel Download PDFInfo
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- CN105989792A CN105989792A CN201510042081.6A CN201510042081A CN105989792A CN 105989792 A CN105989792 A CN 105989792A CN 201510042081 A CN201510042081 A CN 201510042081A CN 105989792 A CN105989792 A CN 105989792A
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- electric current
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Abstract
The invention discloses a current-controlled display panel driving method applied to a display panel with OLED devices, which comprises data signals composed of a plurality of line scanning signals and used for providing a driving control current. Each line scanning signal controls the light-emitting time of each line of the OLED devices. The plurality of line scanning signals are sequentially triggered in turn. Each of the line scanning signals provides an initial signal to control the corresponding OLED devices to emit the light and also provides an ending signal to control the corresponding OLED devices to stop the light-emitting process. The duration of the light-emitting time of the corresponding OLED devices can be controlled through adjusting the time interval between the initial signal and the ending signal. According to the technical scheme of the invention, signals for controlling the light-emitting time of the OLED devices are added in the line scanning signals. In this way, the light-emitting time of the OLED devices is reduced according to the display requirement of low brightness (low gray). Therefore, the defect of response delay due to the long charging time in the low-brightness (low-gray) driving condition can be overcome.
Description
Technical field
(Active Matrix Organic Light Emitting Diode is active to the present invention relates to AMOLED
Matrix/organic light emitting diode (AMOLED)) technical field, particularly relate to a kind of for AMOLED device formed
The electric current control driving method of display floater and display floater.
Background technology
AMOLED has the features such as reaction speed is fast, contrast is high, visual angle is wide, makes AMOLED pair
Than TFT LCD, (Thin Film Transistor Liquid Crystal Display tft liquid crystal shows
Device) there is bigger advantage；The self luminous characteristic of other AMOLED tool, is not required to use backlight, because of
This more can be made frivolous than TFT LCD, and more power saving；Also has a prior feature, no
The AMOLED that need to use backlight can save the backlight module accounting for TFT LCD cost 30%-40%.
Existing AMOLED generally uses the mode that Control of Voltage drives or the side that electric current control drives
Formula is driven.Wherein, although voltage-controlled type circuit has the feature of fast response time, but due to not
The gray scale of display can be regulated exactly, it is difficult to meet the demand of display.And the mode that electric current control drives exists
Owing to driving electric current little when low-light level (low gray scale) drives, cause the charging interval long thus cause response
Postpone.
The AMOLED driving method of the electric current control disclosed in Chinese patent notification number CN1316443C,
Wherein by increasing by a driving power supply, line precharge is entered to electric capacity, to overcome charging interval long defect,
But owing to adding device and circuit, make overall manufacturing cost increase, and wiring difficulty strengthens.
Content of the invention
The problems referred to above existing for existing AMOLED type of drive, now provide one to be intended to overcome
When low-light level (low gray scale) drives, the charging interval is long thus cause the electric current of the defect of operating lag to control
The driving method of display floater and display floater.
Concrete technical scheme is as follows:
The driving method of the display floater of a kind of electric current control, is applied to use the display surface of OLED
Plate, wherein, including multiple line scan signals and the data-signal that driving control current is provided, described in each
Line scan signals controls OLED fluorescent lifetime described in a line, and multiple described line scan signals order depends on
Secondary triggering；
It is luminous that each described line scan signals provides an initial signal to control corresponding described OLED；
And
There is provided an end signal to control corresponding described OLED and stop luminescence；
By adjusting the time interval between described initial signal and described end signal, control corresponding described
The fluorescent lifetime of OLED.
Preferably, the trailing edge of the end signal of each line scan signals in multiple described line scan signals touches
Send out the initial signal of another line scan signals.
Preferably, the trailing edge with end signal triggers the described row of the initial signal of another line scan signals and sweeps
Retouch two line scan signals in interval between signal and the described line scan signals being triggered.
Preferably, the trailing edge of the initial signal of each line scan signals in multiple described line scan signals touches
Send out the end signal of another line scan signals.
Preferably, the trailing edge with initial signal triggers the row scanning letter of the end signal of another line scan signals
Number and the described line scan signals being triggered between interval one line scan signals.
Preferably, the very first time interval T in the frame period of each described line scan signals is set1；
Set a luminance threshold；
Calculate and make described OLED be reached described bright by closed mode in interval T1 of the described very first time
First driving electric current I required for threshold value for the degree1；And
There is provided one more than described first driving electric current I1Second driving electric current I2, and one second time interval
T2, make described OLED in described second time interval T2In closed mode is reached described luminance threshold
Value；Wherein, T1*I1=T2*I2。
Preferably, by described second driving electric current I2It is set as the described first driving electric current I13 times, with
When will each described the very first time interval T1Interior described second time interval T2It is adjusted to described
One time interval T11/3.
Preferably, the very first time interval T in the frame period of each scanning is set1；
Set the luminance threshold of described OLED；
Calculate and be spaced T in the described very first time1Described OLED is inside made to be reached described bright by closed mode
First driving electric current I required for threshold value for the degree1；And
Second driving electric current I is provided2, in the second time interval T of setting2The described OLED of interior driving
Closed mode is reached described luminance threshold；
Wherein said second driving electric current I2More than described first driving electric current I1And described second time interval
T2It is spaced T less than the described very first time1。
Preferably, by described second driving electric current I2It is set to the described first driving electric current I12 times, simultaneously
Will be at very first time interval T each described1Interior described second time interval T2It is adjusted to described first
Time interval T11/3.
Preferably, by described second driving electric current I2It is set to the described first driving electric current I13 times, simultaneously
Will be at very first time interval T each described1Interior described second time interval T2It is adjusted to described first
Time interval T11/2.
Also include that a kind of display floater wherein, uses the display floater that any of the above-described described electric current controls
Driving method be driven.
Technique scheme provides the benefit that:
By increasing the signal of control OLED fluorescent lifetime in line scan signals, reduce low-light level
The fluorescent lifetime of OLED when the display of (low gray scale) scope requires, thus it is (low to shorten low-light level
Gray scale) scope drive when electric capacity charging interval, during to overcome low-light level (low gray scale) to drive charging when
Between the long thus defect that causes operating lag, and do not increase the whole power consumption of display floater.
Brief description
Fig. 1 is the line scan signals sequential chart of existing electric current control AMOLED type of drive；
Fig. 2 is the line scan signals sequential chart of the driving method of the display floater of the electric current control of the present invention；
Fig. 3 is that the brightness of the data-signal of existing electric current control AMOLED type of drive is strong with electric current
The graph of relation of degree；
Fig. 4 is brightness and the electricity of the data-signal of the driving method of the display floater of the electric current control of the present invention
The graph of relation of intensity of flow；
Fig. 5 is device fluorescent lifetime and the frame period of existing electric current control AMOLED type of drive
Graph of a relation；
Fig. 6 is device fluorescent lifetime and the frame week of the driving method of the display floater of the electric current control of the present invention
The graph of a relation of phase.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as the present invention's
Limit.
The driving method of the display floater of a kind of electric current of present invention control, is applied to use OLED
Display floater, wherein, including multiple line scan signals and the data-signal that driving control current is provided, often
Individual line scan signals controls the fluorescent lifetime T of a line OLED, and multiple line scan signals order is successively
Triggering, the line scan signals that order triggers successively can realize the progressive scan of display floater, and all of row is swept
Retouch signal to complete once to trigger one frame period TF of formation.
In existing AMOLED actuation techniques, as it is shown in figure 1, line scan signals is a frame period
TF provides only a pulse, starts luminescence in order to control corresponding OLED, thus existing skill
In art, as it is shown in figure 5, OLED in whole frame period TF all in luminescence, if existing
The charging interval requiring low-light level (low gray scale) display with the form improving electric current in technical foundation is carried out
Compensate, then whole panel energy consumption can be caused to increase.
For this phenomenon, as in figure 2 it is shown, initial signal START can be provided in each line scan signals
Control corresponding OLED luminous；And provide an end signal END to control corresponding OLED device
Part stops luminescence；By adjusting the time interval between initial signal START and end signal END,
Control the fluorescent lifetime of corresponding OLED.
On the basis of technique scheme, further, can be swept by each row in multiple line scan signals
The trailing edge of the end signal END retouching signal triggers initial signal START of another line scan signals.
As one preferred embodiment, the trailing edge with end signal END triggers another line scan signals
The line scan signals of initial signal START and the line scan signals being triggered between can be spaced two row
Scanning signal.
On the basis of technique scheme, further, can be swept by each row in multiple line scan signals
The trailing edge of initial signal START retouching signal triggers the end signal END of another line scan signals.
As one preferred embodiment, the trailing edge with initial signal START triggers another row scanning letter
Number the line scan signals of end signal END and the line scan signals being triggered between can be spaced a row
Scanning signal.
On the basis of technique scheme, further, the frame period of each line scan signals can be set
Interior very first time interval T1；Set a luminance threshold F；And calculate the very first time interval T1 in make
OLED is reached the first driving electric current I required for luminance threshold F by closed mode1；And provide
One more than the first driving electric current I1Second driving electric current I2, and one second time interval T2, utilize second
Drive electric current I2OLED can be made in the second time interval T2In closed mode is reached luminance threshold
F；Wherein, T1*I1=T2*I2。
The concrete methods of realizing of technique scheme is, brightness when determining that a display floater normally shows with
The relation curve of current strength, and define a luminance threshold F, less than luminance threshold on relation curve
Region is defined as low intensity range, is defined as high intensity range higher than the region of luminance threshold.Need herein
Illustrate is brightness and the current strength pass of electric current control type of drive in this relation curve i.e. prior art
System, in a kind of prior art, more typical relation curve is as shown in Figure 3.Meanwhile, can be by brightness with 0-255
Divide, and in the range of 0-255, set a median as luminance threshold F, certain luminance threshold F
Concrete value can determine according to the actual needs.After setting luminance threshold F, can be by such as Fig. 3 institute
The relation curve showing calculates and obtains the first driving electric current that the display of low intensity range in prior art requires
I1。
Line scan signals makes fluorescent lifetime that is second time interval that the display being in low intensity range requires
T2Less than frame period TF, and when being maintained in fluorescent lifetime that is first of display requirement of high intensity range
Between interval T1Equal to frame period TF；Data-signal improves the driving of the display requirement being in low intensity range
Electric current that is second drives electric current I2, and the driving electric current that the display being maintained in high intensity range requires.On
State in scheme by calculating the first driving electric current I obtaining1, the very first time interval T of setting1, when second
Between interval T2, and formula mentioned above can calculate the second driving electric current I2.Fig. 4 illustrates above
State brightness and the relation curve of current strength of a kind of embodiment determination of technical scheme, wherein, be less than
When the display of the low intensity range of luminance threshold F requires, the second driving electric current I2Improving N times, N is
Natural number more than 2.Fig. 6 illustrates the second time that a kind of embodiment of techniques described above scheme sets
Interval T2Illustrate with the relation of frame period TF, wherein, in the low intensity range less than luminance threshold F
When display requires, the second time interval T2Foreshorten to the 1/N of frame period TF.
Technique scheme is by the fluorescent lifetime shortening requiring the display of low intensity range, and improves low
The current strength of the control electric current of the data-signal that the display of brightness range requires, it is achieved drive in low-light level
When accelerate the charging rate of electric capacity in drive circuit thus the technology effect that improves OLED response speed
Really.
As one preferred embodiment, second can be driven electric current I2It is set as the first driving electric current I1
3 times, simultaneously can be spaced T in each very first time1The second interior time interval T2It is adjusted to
One time interval T11/3.
Technique scheme also can be set by change, implements with form described below, sets each
Very first time interval T in the frame period of individual scanning1；Set the luminance threshold F of OLED；Calculate
It is spaced T in the very first time1OLED is inside made to be reached required for luminance threshold F by closed mode
One driving electric current I1；And the second driving electric current I is provided2, by the second driving electric current I2In setting second
Time interval T2Interior driving OLED is reached luminance threshold F by closed mode；
Wherein the second driving electric current I2More than the first driving electric current I1, and the second time interval T2Less than
One time interval T1。
This embodiment does not limit the second time interval T2It is spaced T with the very first time1, and the second driving electricity
Stream I2With the first driving electric current I1Between ratio relation.
As one preferably embodiment, second can be driven electric current I2It is set to the first driving electric current I12
Times, can will be spaced T in each very first time simultaneously1The second interior time interval T2When being adjusted to first
Between interval T11/3.
As one preferably embodiment, it is possible to drive electric current I by second2It is set to the first driving electric current I1
3 times, simultaneously will each very first time be spaced T1The second interior time interval T2It is adjusted to first
Time interval T11/2.
Technical scheme also includes a kind of display floater, wherein, uses above-mentioned electric current to control
The driving method of display floater is driven.
The foregoing is only preferred embodiment of the present invention, not thereby limit embodiments of the present invention and
Protection domain, to those skilled in the art, it should can appreciate that all utilization description of the invention
And the scheme that the equivalent done by diagramatic content is obtained with obvious change, all should comprise
Within the scope of the present invention.
Claims (11)
1. a driving method for the display floater of electric current control, is applied to use the display of OLED
Panel, it is characterised in that include multiple line scan signals and the data-signal of driving control current is provided,
Each described line scan signals controls OLED fluorescent lifetime described in a line, multiple described row scanning letter
Number order triggers successively；
It is luminous that each described line scan signals provides an initial signal to control corresponding described OLED；
And
There is provided an end signal to control corresponding described OLED and stop luminescence；
By adjusting the time interval between described initial signal and described end signal, control corresponding described
The fluorescent lifetime of OLED.
2. the driving method of the display floater of electric current control as claimed in claim 1, it is characterised in that many
The trailing edge of the end signal of each line scan signals in individual described line scan signals triggers the scanning of another row
The initial signal of signal.
3. the driving method of the display surface of electric current control as claimed in claim 2, it is characterised in that with knot
Bundle signal trailing edge trigger another line scan signals initial signal described line scan signals be triggered
Described line scan signals between interval two line scan signals.
4. the driving method of the display floater of electric current control as claimed in claim 1, it is characterised in that many
The trailing edge of the initial signal of each line scan signals in individual described line scan signals triggers the scanning of another row
The end signal of signal.
5. the driving method of the display floater of electric current control as claimed in claim 4, it is characterised in that with
The trailing edge of initial signal triggers the line scan signals of the end signal of another line scan signals and is triggered
It is spaced a line scan signals between described line scan signals.
6. the driving method of the display floater of electric current control as claimed in claim 1, it is characterised in that set
Very first time interval T in the frame period of each described line scan signals fixed1；
Set a luminance threshold；
Calculate and make described OLED be reached described bright by closed mode in interval T1 of the described very first time
First driving electric current I required for threshold value for the degree1；And
There is provided one more than described first driving electric current I1Second driving electric current I2, and one second time interval
T2, make described OLED in described second time interval T2In closed mode is reached described luminance threshold
Value；Wherein, T1*I1=T2*I2。
7. the driving method of the display floater of electric current control as claimed in claim 6, it is characterised in that will
Described second driving electric current I2It is set as the described first driving electric current I13 times, simultaneously will be in each institute
State very first time interval T1Interior described second time interval T2It is adjusted to interval T of the described very first time1's
1/3。
8. the driving method of the display floater of electric current control as claimed in claim 1, it is characterised in that set
Very first time interval T in the frame period of each scanning fixed1；
Set the luminance threshold of described OLED；
Calculate and be spaced T in the described very first time1Described OLED is inside made to be reached described bright by closed mode
First driving electric current I required for threshold value for the degree1；And
Second driving electric current I is provided2, in the second time interval T of setting2The described OLED of interior driving
Closed mode is reached described luminance threshold；
Wherein said second driving electric current I2More than described first driving electric current I1And described second time interval
T2It is spaced T less than the described very first time1。
9. the driving method of the display floater of electric current control as claimed in claim 8, it is characterised in that will
Described second driving electric current I2It is set to the described first driving electric current I12 times, simultaneously will be described in each
The very first time is spaced T1Interior described second time interval T2It is adjusted to interval T of the described very first time1's
1/3。
10. the driving method of the display floater of electric current control as claimed in claim 8, it is characterised in that will
Described second driving electric current I2It is set to the described first driving electric current I13 times, simultaneously will be described in each
The very first time is spaced T1Interior described second time interval T2It is adjusted to interval T of the described very first time1's
1/2。
11. 1 kinds of display floaters, it is characterised in that use electric current as described in arbitrary in claim 1-10
The driving method of the display floater of control is 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105989792A true CN105989792A (en) | 2016-10-05 |
| CN105989792B CN105989792B (en) | 2018-11-16 |
Family
ID=57036464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510042081.6A Active CN105989792B (en) | 2015-01-27 | 2015-01-27 | A kind of driving method and display panel of the display panel of current control |
Country Status (2)
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|---|---|
| CN (1) | CN105989792B (en) |
| TW (1) | TW201627970A (en) |
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| CN108227287A (en) * | 2018-01-26 | 2018-06-29 | 京东方科技集团股份有限公司 | Display device, virtual reality show equipment and its control method |
| CN108257545A (en) * | 2018-01-04 | 2018-07-06 | 友达光电股份有限公司 | Display device and driving method thereof |
| WO2021083155A1 (en) * | 2019-10-30 | 2021-05-06 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method therefor, 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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| WO2021083155A1 (en) * | 2019-10-30 | 2021-05-06 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method therefor, display panel, and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105989792B (en) | 2018-11-16 |
| TW201627970A (en) | 2016-08-01 |
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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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