CN1442842A - Driving method of passive organic luminuous dipolar object display apparatus - Google Patents
Driving method of passive organic luminuous dipolar object display apparatus Download PDFInfo
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- CN1442842A CN1442842A CN02106870A CN02106870A CN1442842A CN 1442842 A CN1442842 A CN 1442842A CN 02106870 A CN02106870 A CN 02106870A CN 02106870 A CN02106870 A CN 02106870A CN 1442842 A CN1442842 A CN 1442842A
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Abstract
A drive method for passive organic LED display features use of scan line driver and data line driver, and includes such steps as disconnecting all scan lines and data lines from their drivers, supplying scan signal to a scan line while connecting the scan line with scan driver, disconnecting the scan line from scan driver as soon as the scan signal stops, delaying a certain time, repeating said steps for another scan line, and so on.
Description
Technical field
The present invention relates to the driving method of passive organic luminuous dipolar object display apparatus, particularly can solve the phenomenon of interactive interference (Crosstalk), and reduce the driving method of consumed power.
Background technology
Fig. 1 is the internal circuit diagram of known organic light emitting diode (OLED) display.This display has a plurality of sweep trace Com1, Com2, Com3, Com4, Com5 and plurality of data line Seg1, Seg2, Seg3, Seg4, Seg5 and a pel array, wherein each pixel is an organic light emitting diode, and driven by this sweep trace and this data line, this display comprises data line simultaneously and drives wafer 12 in order to distinguish supplies data signals to this data line, supplies sweep signal respectively to this sweep trace with turntable driving wafer 10 according to P-SCAN mode or interlace scan mode.
Interactive interference (Crosstalk) spurious signal is the factor of the picture quality of the known OLED display of influence, it causes remaining image easily, and the reason that interactive interference produces has two: one, the shared data line of a plurality of organic light emitting diodes and a sweep trace; Its two, be because of not having time delay between two scanning motions, and make the residual charge in the data line of a scanning motion discharge toward the sweep trace of next scanning motion.
In addition, because the non-state of choosing of the data line of known OLED display is an electronegative potential, and the non-state of choosing of sweep trace is a noble potential, and this can cause reverse blas or negative bias to produce.Because of reverse blas can produce converse electrical leakage stream, thereby make the consumed power that drives wafer and display panel itself increase, if the commutating ratio of display panel itself is not good, can cause signal to run helter-skelter again and produce interactive interference, display quality for display makes the matter worse beyond doubt, can cause the phenomenon of brightness irregularities and even image fog.
Summary of the invention
Purpose of the present invention is for solving above-mentioned interactive interference problem, can reducing the consumed power that drives wafer and display panel simultaneously.
For achieving the above object, the invention provides a kind of driving method of passive organic luminuous dipolar object display apparatus, comprising: (A) should a plurality of sweep traces and this plurality of data line drive wafer with this scanning line driving wafer and data line respectively and opened circuit; When (B) supplying the one scan signal to the one scan line, synchronously this sweep trace is connected with the scanning line driving wafer with the scanning line driving wafer; (C) moment of this sweep signal termination, this sweep trace and scanning line driving wafer are opened circuit; (D) this scanning line driving wafer is after a time delay of being scheduled to, another sweep trace of supply one another sweep signal to one, and when this scanning line driving wafer is supplied this another sweep signal, synchronously this another sweep trace is connected with the scanning line driving wafer; (E) in the moment that this another sweep signal is ended, this another sweep trace and this scanning line driving wafer are opened circuit; According to the scan mode of this turntable driving wafer, repeated execution of steps (B) is to step (E), up to the scanning motion of finishing these a plurality of sweep traces.
Above-mentioned step (C) further comprises: in the moment that this sweep signal is ended, synchronously this plurality of data line and this data line driving wafer are opened circuit.This step (E) further comprises: in the moment that this another sweep signal is ended, synchronously this plurality of data line and this data line driving wafer are opened circuit.
Description of drawings
Fig. 1 is the internal circuit diagram of known organic light emitting diode (OLED) display.
Fig. 2 is a process flow diagram of the present invention.
Fig. 3 A to Fig. 3 C shows according to a specific embodiment of the present invention, the action synoptic diagram of its OLED display.
Fig. 4 shows according to OLED display of the present invention, the signal waveforms in its each sweep trace and each data line.
Figure number
10 scanning line driving wafers, 33 organic light emitting diodes
12 data lines drive wafer 34 organic light emitting diodes
30 organic light emitting diodes, 36 current sources
31 organic light emitting diodes, 38 current sources
32 organic light emitting diodes
Embodiment
For making those skilled in the art understand purpose of the present invention, feature and function, use following embodiment, and conjunction with figs., the present invention is illustrated in detail.
Fig. 2 is a process flow diagram of the present invention.Step 20 is opened circuit a plurality of sweep traces in the display and plurality of data line respectively with scanning line driving wafer 10 and data line wafer 12; Step 22 is when scanning line driving wafer 10 is supplied the one scan signals to the one scan line, synchronously this sweep trace is connected with scanning line driving wafer 10; Step 24 is the moments of ending in this sweep signal, and this sweep trace and scanning line driving wafer 10 are opened circuit; Step 26 is that scanning line driving wafer 10 is after a time delay of being scheduled to, again another sweep trace is scanned, scanning line driving wafer 10 another sweep signals of supply are to this another sweep trace, and when these scanning line driving wafer 10 these another sweep signals of supply, synchronously this another sweep trace is connected with scanning line driving wafer 10; Step 28 is the moments of ending in this another sweep signal, once more this another sweep trace and scanning line driving wafer 10 is opened circuit.According to the predetermined scan mode of turntable driving wafer 10, repeated execution of steps 22 is to step 28, up to the scanning motion of finishing these a plurality of sweep traces.
Fig. 3 A to Fig. 3 C shows according to a specific embodiment of the present invention, the action synoptic diagram of its OLED display.Fig. 3 A reading scan line driving wafer 10 is electronegative potential or ground connection for the state of choosing of each sweep trace, but not the state of choosing is suspension joint (floating) or high impedance or opens circuit, data line driving wafer 12 is noble potential or connects a current source for the state of choosing of each data line, but not the state of choosing is suspension joint or high impedance or opens circuit.The OLED display scans over against sweep trace Com1, and organic light emitting diode 30,32,34 is subjected to the driving of data line Seg1, Seg3, Seg5 respectively and luminous.
After the OLED display was finished scanning motion to sweep trace Com1, sweep trace Com1 switched to the non-state of choosing immediately, i.e. suspension joint or high impedance or open circuit are shown in Fig. 3 B-1.At this moment, all organic light emitting diodes no longer are subjected to the driving of scanning line driving wafer 10, and have a loop (loop) of one's own, on electricity, this loop is equivalent to the diode circuit that an electric capacity forms of connecting, therefore can discharge in this loop, makes the residual charge of data line Seg1, Seg3, Seg5 can not produce aforesaid interactive interference phenomenon by the inner self-discharge of display panel.Holding time of the state of Fig. 3 B-1 should be benchmark so that residual charge on the sweep trace is run out, and could scan next sweep trace, so this section held time and be can be described as " time delay ".According to the present invention, do not take notice of the state of choosing of each data line among Fig. 3 B-1 especially, this meaned during time delay, the state of choosing of each data line can remain unchanged or switch to the required data line of next scanning motion earlier and choose state (as Fig. 3 B-1), certainly also all data lines can be switched to the non-state (as Fig. 3 B-2) of choosing, it is all can have a loop of one's own because of organic light emitting diode, can't be subjected to the influence of external circuits, although current source 36 as Fig. 3 B-1,38, the drive current that is produced can't flow in the loop, therefore without any influence.
Fig. 3 C shows that the OLED display scans over against sweep trace Com2, and organic light emitting diode 31,33 is subjected to the driving of data line Seg2, Seg4 respectively and luminous.The present invention is according to the scan mode of scanning line driving wafer 10, repeat actions such as above-mentioned " choose-non-choose-postpone ", if describe, then can be described as steps such as repeating " connecting-open circuit-postpone ", up to the scanning motion of finishing all sweep traces with the circuit viewpoint.
With reference to figure 4, it shows according to OLED display of the present invention, the signal waveforms in its each sweep trace and each data line.Can observe out by Fig. 4, scanning line driving wafer 10 is to supply sweep signal respectively to sweep trace Com1, Com2, Com3, Com4, Com5 in the P-SCAN mode, but the present invention is defined in the OLED display that scans in the P-SCAN mode, for the OLED display that uses other scan modes, as interlacing etc., also can use method of the present invention.At time zone T
1In, data line drives 12 while of wafer supplies data signals to data line Seg1, Seg3, Seg5, this data-signal that is drive current.In a short time section T
fIn, i.e. aforesaid time delay, the residual charge of data line Seg1, Seg3, Seg5 is just by the inner self-discharge of display panel; In the time section T
2In, then carry out the scanning motion of next sweep trace (Com2).
Characteristics of the present invention can be summarized as follows:
Utilize the design of time delay, make the residual charge of data line have the sufficient time to discharge, so can not produce interactive interference.
The non-current potential of choosing of sweep trace and data line is all suspension joint or high impedance or off state, therefore the generation of reverse blas or negative bias can not be arranged, relatively not having the converse electrical leakage miscarriage gives birth to, so the electric current that the driving wafer is exported can all be consumed in display panel, and can reduce the consumed power that drives wafer and display panel.
According to the present invention, do not have the generation of converse electrical leakage stream, even therefore the commutating ratio of display panel itself is not good, do not have that signal is run helter-skelter and the interactive interference that produces yet.
The present invention very easily realizes in the circuit design mode, wherein can use the electric crystal switch to drive whether being connected of wafer with data line with the control data line, and whether being connected of sweep trace and scanning line driving wafer, use a trigger (trigger) with the time delay that can set to drive the off state of wafer or the off state of sweep trace and scanning line driving wafer simultaneously to keep data line and data line.
Though the present invention discloses as above with a specific embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the accompanying Claim scope person of defining.
Claims (5)
1. the driving method of a passive organic luminuous dipolar object display apparatus, wherein this display have a plurality of sweep traces, plurality of data line, with a plurality of organic light emitting diodes that driven by this sweep trace and this data line, and one data line drive wafer in order to supplies data signals respectively to this data line, with the one scan line drive wafer according to the one scan mode to supply sweep signal respectively to this sweep trace, it is characterized in that this driving method comprises:
(A) should a plurality of sweep traces and this plurality of data line opened circuit with this scanning line driving wafer and this data line wafer respectively;
When (B) supplying one scan signal to the one scan line, synchronously this sweep trace is connected with the scanning line driving wafer with this scanning line driving wafer;
(C) in the moment that this sweep signal is ended, this sweep trace and scanning line driving wafer are opened circuit;
(D) this scanning line driving wafer is after a time delay of being scheduled to, another sweep trace of supply one another sweep signal to one, and when this scanning line driving wafer is supplied this another sweep signal, synchronously this another sweep trace is connected with the scanning line driving wafer;
(E) in the moment that this another sweep signal is ended, this another sweep trace and this scanning line driving wafer are opened circuit.
According to the scan mode of this turntable driving wafer, repeated execution of steps (B) is to step (E), up to the scanning motion of finishing these a plurality of sweep traces.
2. driving method as claimed in claim 1 is characterized in that wherein this step (C) further comprises: in the moment that this sweep signal is ended, synchronously this plurality of data line and this data line driving wafer are opened circuit.
3. driving method as claimed in claim 1 is characterized in that wherein this step (E) further comprises: in the moment that this another sweep signal is ended, synchronously this plurality of data line and this data line driving wafer are opened circuit.
4. driving method as claimed in claim 1 is characterized in that wherein this scan mode is the P-SCAN mode.
5. driving method as claimed in claim 1 is characterized in that wherein this scan mode is an interlace scan mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021068704A CN1262981C (en) | 2002-03-06 | 2002-03-06 | Driving method of passive organic luminuous dipolar object display apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021068704A CN1262981C (en) | 2002-03-06 | 2002-03-06 | Driving method of passive organic luminuous dipolar object display apparatus |
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| CN1442842A true CN1442842A (en) | 2003-09-17 |
| CN1262981C CN1262981C (en) | 2006-07-05 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231258A (en) * | 2011-05-30 | 2011-11-02 | 杭州士兰控股有限公司 | Method and system for eliminating mura of LED dynamic display |
| CN102358887A (en) * | 2011-08-31 | 2012-02-22 | 云南大学 | Streptomyces fimicarius for eliminating toxicity of jatropha curcas cake |
| CN101866613B (en) * | 2007-01-08 | 2012-05-23 | 北京巨数数字技术开发有限公司 | Scanning type LED display device and method for eliminating forward moving hidden brightness thereof |
| CN103165071A (en) * | 2011-12-14 | 2013-06-19 | 矽恩微电子(厦门)有限公司 | System and method for removing light-emitting diode (LED) array scanning ghost shadow |
| CN112328121A (en) * | 2020-11-27 | 2021-02-05 | 北京集创北方科技股份有限公司 | Electronic device, method and electronic equipment |
-
2002
- 2002-03-06 CN CNB021068704A patent/CN1262981C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866613B (en) * | 2007-01-08 | 2012-05-23 | 北京巨数数字技术开发有限公司 | Scanning type LED display device and method for eliminating forward moving hidden brightness thereof |
| CN102231258A (en) * | 2011-05-30 | 2011-11-02 | 杭州士兰控股有限公司 | Method and system for eliminating mura of LED dynamic display |
| CN102231258B (en) * | 2011-05-30 | 2014-02-19 | 苏州君嬴电子科技有限公司 | Method and system for eliminating mura of LED dynamic display |
| CN102358887A (en) * | 2011-08-31 | 2012-02-22 | 云南大学 | Streptomyces fimicarius for eliminating toxicity of jatropha curcas cake |
| CN102358887B (en) * | 2011-08-31 | 2013-03-06 | 云南大学 | Coprophilous streptomyces for eliminating toxicity of jatropha curcas cake |
| CN103165071A (en) * | 2011-12-14 | 2013-06-19 | 矽恩微电子(厦门)有限公司 | System and method for removing light-emitting diode (LED) array scanning ghost shadow |
| CN112328121A (en) * | 2020-11-27 | 2021-02-05 | 北京集创北方科技股份有限公司 | Electronic device, method and electronic equipment |
| CN112328121B (en) * | 2020-11-27 | 2024-05-28 | 北京集创北方科技股份有限公司 | Electronic device, method and electronic equipment |
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| CN1262981C (en) | 2006-07-05 |
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Owner name: SHENGHUA SCI. & TECH. CO., LTD. Free format text: FORMER OWNER: SHENGYUAN SCIENCE AND TECHNOLOGY CO. LTD. Effective date: 20041015 |
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