CN101556764A - Method for driving passive matrix organic light emitting diode display device - Google Patents
Method for driving passive matrix organic light emitting diode display device Download PDFInfo
- Publication number
- CN101556764A CN101556764A CNA2009102035663A CN200910203566A CN101556764A CN 101556764 A CN101556764 A CN 101556764A CN A2009102035663 A CNA2009102035663 A CN A2009102035663A CN 200910203566 A CN200910203566 A CN 200910203566A CN 101556764 A CN101556764 A CN 101556764A
- Authority
- CN
- China
- Prior art keywords
- emitting diode
- light emitting
- display device
- organic light
- sweep trace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a method for driving a passive matrix organic light emitting diode display device, wherein the passive matrix organic light emitting diode display device comprises a plurality of scanning beams and a plurality of signal wires. The driving method comprising the following steps: (1) the scanning beams are divided into a plurality of groups, wherein the number of the groups is less than that of the scanning beams; (2) each group of the scanning beams is scanned in sequence, wherein the scanning beams in the same group are switched on or switched off simultaneously; (3) each scan beam is scanned in sequence; and (4) the scanning results of the step (2) and the step (3) are combined so as to generate a display picture. By adopting the method, the maximum brightness of the passive matrix organic light emitting diode display device can be reduced, therefore, the lightening efficiency is improved.
Description
Technical field
The invention discloses a kind of organic light emitting diode display device, particularly about a kind of driving method that can reduce the passive matrix organic light emitting diode display device of power attenuation.
Background technology
Organic electric exciting light-emitting diode (Organic Light Emitting Diode, OLED) display device can produce autoluminescence with the different organic light emitting diode display devices that are of liquid crystal indicator, need not need backlight module to produce light as liquid crystal indicator.The advantage of organic light emitting diode display device is light, thin, high chroma, high contrast, high reaction velocity and can be produced on the substrate of deflection, for having the display device of development potentiality future.
Organic light emitting diode display device can be divided into passive type (passive) matrix organic light emitting diode (Passive Matrix Organic Light Emitting Diode according to type of drive, PMOLED) display device and active (active) matrix organic light emitting diode display device (Active Matrix OrganicLight Emitting Diode, AMOLED).See also Fig. 1, synoptic diagram for a picture element of active-matrix organic light emitting diode display device, in each picture element, need plural thin film transistor (TFT) (Thin Film Transistor at least, TFT) T1, T2 and, a capacitor C and an organic electric exciting light-emitting diode 50, and consider the driving force of thin film transistor (TFT) T1, T2 and the design of compensating circuit, therefore can increase complexity and the processing procedure cost of active-matrix organic light emitting diode display device when making.
On the other hand, passive matrix organic light emitting diode display device does not need thin film transistor (TFT) T1, the T2 of construction drawing 1, and processing procedure is comparatively simple.Please refer to Fig. 2 A, be the synoptic diagram of passive matrix organic light emitting diode display device.Passive matrix organic light emitting diode display device comprises 60 and one groups of cathode line of one group of anode line (Anode Lines) (Cathode Lines) 70.Anode line 60 is driven by one group of row (Column) driver element 62, and cathode line 70 is driven by one group of row (Row) driver element 72.Yet passive matrix organic light emitting diode display device needs moment point high brightness, please refer to Fig. 2 B, luminescence efficiency and brightness (Brightness for the green fluorescence organic electric exciting light-emitting diode, be called briliancy again) curve map, wherein the unit of luminescence efficiency is lumens/watt (lumens/watt, lm/W), the unit of brightness is candela/every square metre of (candela/meter
2, cd/m
2).By curve map as can be known, luminescence efficiency is low more during the brighter display of green fluorescence organic electric exciting light-emitting diode, so passive matrix organic light emitting diode display device has high power loss, serviceable life (Lifetime) is short and can't be applied to high-resolution shortcoming.
New line along with energy-conservation and environmental consciousness, and the too high problem of active-matrix organic light emitting diode display device cost of manufacture, under the consideration that does not influence color performance and display quality, how reducing the cost of manufacture of passive matrix organic light emitting diode display device and reduce power attenuation, is the important topic of passive matrix organic light emitting diode display device.
Therefore, existing passive matrix organic light emitting diode display device has improved necessity.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of driving method of passive matrix organic light emitting diode display device, can reduce power attenuation, increase the luminescence efficiency of organic electric exciting light-emitting diode.
For achieving the above object, the present invention adopts following technical scheme: a kind of driving method of passive matrix organic light emitting diode display device, this passive matrix organic light emitting diode display device comprises some sweep traces and some signal line, it is characterized in that: this driving method is drawn together following steps:
(1) these sweep traces are divided into some groups, wherein the number of these groups is less than the number of these sweep traces;
(2) in regular turn to the sweep trace scanning of each group, wherein the sweep trace of same group is conducting simultaneously or disconnection;
(3) in regular turn to each bar sweep trace scanning; And
(4) with the scanning result combination of step (2) and step (3), to produce a display frame.
Compared with prior art, after the driving method of passive matrix organic light emitting diode display device of the present invention is divided into several groups with the sweep trace of viewing area, scanning in two stages, the phase one, subordinate phase was more in regular turn to each bar sweep trace scanning earlier to each group's scanning.Drive by display frame being splitted into two sprites, can reach the power that reduces the wastage, increase the luminescence efficiency of organic electric exciting light-emitting diode, promptly increase the efficient of passive matrix organic light emitting diode display device.
The present invention is described further below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is the synoptic diagram of a picture element of active-matrix organic light emitting diode display device.
Fig. 2 A is the synoptic diagram of passive matrix organic light emitting diode display device.
Fig. 2 B is the luminescence efficiency of green fluorescence organic electric exciting light-emitting diode and the curve map of brightness.
Fig. 3 is the process flow diagram of the driving method of the passive matrix organic light emitting diode display device in the preferred embodiment of the present invention.
Fig. 4 is the driving sequential chart of the passive matrix organic light emitting diode display device in the preferred embodiment of the present invention and the synoptic diagram of display frame.
The comparison that Fig. 5 is prior art and the present invention in the curve map of the luminescence efficiency of green fluorescence organic electric exciting light-emitting diode and brightness.
Embodiment
Relevant detailed description of the present invention and technology contents, existing as follows with regard to accompanying drawings.The explanation of following examples is with reference to additional diagram, is used for the specific embodiment that illustration the present invention can be used for implementing.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the process flow diagram of the driving method of the passive matrix organic light emitting diode display device in the preferred embodiment of the present invention, and Fig. 4 is the driving sequential chart (Driving Timing Chart) of the passive matrix organic light emitting diode display device in the preferred embodiment of the present invention and the synoptic diagram of display frame.This passive matrix organic light emitting diode display device comprises sweep trace 1 to 10 and some signal line (only the signals shown line 11).Sweep trace 1 to 10 can be considered one group of scan electrode, signal wire 11 can be considered one group of signal electrode, passive matrix organic light emitting diode display device comprises that more a multilayer organic layer (not shown) is clipped between scan electrode and the signal electrode, produces display frame by the driving of two groups of electrodes.This driving method comprises following steps:
Step (1) is divided into several groups with sweep trace 1 to 10, and the number of these groups is less than the number of sweep trace (promptly 10), and in the present embodiment, 10 sweep traces are divided into K group, wherein 1＜K＜10;
Step (2), in sequential 1, to the sweep trace scanning of K group, wherein the sweep trace of same group is conducting simultaneously or disconnection in regular turn, and as shown in Figure 4, on behalf of first group, square frame 70 lighted, and other group is not lighted; On behalf of K group, square frame 72 lighted, and other group is not lighted, and during sweep trace conducting in the wherein same group, is to select minimum brightness in the sweep trace of same group as the signal of lighting (following more detailed explanation will be arranged);
Step (3), in sequential 2, in regular turn to sweep trace 1 to 10 scanning, sweep signal is that sweep trace 1 to 10 is complemented to required brightness (following more detailed explanation will be arranged) separately, as shown in Figure 4, on behalf of scan electrode 2, square frame 74 lighted and is complemented to required brightness, and other sweep trace is not lighted; On behalf of sweep trace 8, square frame 76 lighted and is complemented to required brightness, and other sweep trace is not lighted; And
Step (4) with the scanning result combination of step (2) and step (3), to produce a display frame 78, is about to the results added of sequential 1 and sequential 2, produces a frame (Frame) display frame 78.
Please also refer to Fig. 4 and table 1, table 1 is the measurement data of Fig. 4 when hanging down conversation structure.
Table 1
Time ratio of prior art in the table 1 (Time Ratio) and GTG value (Grey Level, be brightness) respectively representative scan the required GTG value (brightness) of time ratio that sweep trace 1 to 10 accounts for separately and sweep trace 1 to 10, the i.e. numerical value of existing Driving technique in regular turn.Sweep trace shown in the table 6 and 10 is minimum GTG value (brightness), and its value is 300.If when not adopting technical scheme of the present invention according to prior art, the time ratio that scans every sweep trace in regular turn is 0.1 (promptly 10%), and its power ratio (Power Ratio) is considered as benchmark, promptly 100%.When adopting technical scheme of the present invention, 50% (promptly 0.5) that the time that scans with sequential 1 accounts for the sweep time of (sequential 1+ sequential 2) scans, select minimum brightness in the sweep trace of same group as the signal of lighting, promptly sweep trace 1 to 10 all gives the signal of GTG value (brightness) 300.In sequential 2, to sweep trace 1 to 10 scanning, sweep signal is that sweep trace 1 to 10 is complemented to required GTG value (brightness) separately in regular turn.Sweep trace 1 required GTG value (brightness) is 400, and the GTG value (brightness) in the sequential 1 has been 300, increases by 100 in the sequential 2, complements to 400; Sweep trace 6 required GTG values (brightness) are 300, and the GTG value (brightness) in the sequential 1 has been 300, so do not need in the sequential 2 to supply again.All the other sweep traces all complement to required GTG value (brightness) as aforesaid way, repeat no more.Can get power ratio of the present invention after the measurement and only be 79.9% of prior art, reach the purpose that lowers power attenuation.
Refer again to table 2, table 1 is Fig. 4 in the measurement data of height during to conversation structure.Sweep trace shown in the prior art 1 is minimum GTG value (brightness) in the table 2, and its value is 100.If when not adopting technical scheme of the present invention according to prior art, the time ratio that scans every sweep trace in regular turn is 0.1 (promptly 10%), and its power consumption ratio is considered as benchmark, promptly 100%.When adopting technical scheme of the present invention, 20% (promptly 0.2) that the time that scans with sequential 1 accounts for the sweep time of (sequential 1+ sequential 2) scans, select minimum gray value (brightness) in the sweep trace of same group as the signal of lighting, promptly sweep trace 1 to 10 all gives the signal of GTG value (brightness) 100.In sequential 2, to sweep trace 1 to 10 scanning, sweep signal is that sweep trace 1 to 10 is complemented to required GTG value (brightness) separately in regular turn.Sweep trace 1 required GTG value (brightness) is 100, and the GTG value in the sequential 1 has been 100, does not need in the sequential 2 to supply again; Sweep trace 6 required GTG values are 300, and the GTG value in the sequential 1 has been 100, increase by 200 in the sequential 2 to complement to 300.All the other sweep traces all complement to required GTG value (brightness) as aforesaid way, repeat no more.Can get power ratio of the present invention after the measurement and only be 93.1% of prior art, reach the purpose that lowers power attenuation.
Table 2
Please refer to Fig. 5, be prior art and the present invention comparison in the curve map of the luminescence efficiency of green fluorescence organic electric exciting light-emitting diode and brightness.Because the high-high brightness of prior art is bigger, so luminescence efficiency is relatively poor, shown in A point, and the present invention is because the reduction high-high brightness, so luminescence efficiency is higher, shown in the B point.
Compared with prior art, after the driving method of passive matrix organic light emitting diode display device of the present invention is divided into several groups with the sweep trace of viewing area, scanning in two stages, the phase one, subordinate phase was more in regular turn to each bar sweep trace scanning earlier to each group's scanning.Drive by display frame being splitted into two sprites, can reach the power that reduces the wastage, increase the luminescence efficiency of organic electric exciting light-emitting diode, promptly increase the efficient of passive matrix organic light emitting diode display device.
Though the present invention discloses as above with embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; change and retouching when making a kind, so protection scope of the present invention is as the criterion when looking appended the claim person of defining.
Claims (5)
1, a kind of driving method of passive matrix organic light emitting diode display device, this passive matrix organic light emitting diode display device comprise some sweep traces and some signal line, it is characterized in that: this driving method is drawn together following steps:
(1) these sweep traces are divided into some groups, wherein the number of these groups is less than the number of these sweep traces;
(2) in regular turn to the sweep trace scanning of each group, wherein the sweep trace of same group is conducting simultaneously or disconnection;
(3) in regular turn to each bar sweep trace scanning; And
(4) with the scanning result combination of step (2) and step (3), to produce a display frame.
2, driving method as claimed in claim 1 is characterized in that: in step (2), during sweep trace conducting in the same group, be to select minimum brightness in the sweep trace of same group as the signal of lighting.
3, driving method as claimed in claim 2 is characterized in that: in step (3), during in regular turn to each bar sweep trace scanning, be that each sweep trace is complemented to required brightness.
4, driving method as claimed in claim 1 is characterized in that: these sweep traces are in order to light several picture elements that are connected on these sweep traces.
5, driving method as claimed in claim 1 is characterized in that: these signal wires are in order to provide signal to several picture elements that are connected on these signal wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009102035663A CN101556764A (en) | 2009-05-18 | 2009-05-18 | Method for driving passive matrix organic light emitting diode display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009102035663A CN101556764A (en) | 2009-05-18 | 2009-05-18 | Method for driving passive matrix organic light emitting diode display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101556764A true CN101556764A (en) | 2009-10-14 |
Family
ID=41174861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009102035663A Pending CN101556764A (en) | 2009-05-18 | 2009-05-18 | Method for driving passive matrix organic light emitting diode display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101556764A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184708A (en) * | 2011-05-11 | 2011-09-14 | 冠捷显示科技（厦门）有限公司 | Novel passive matrix driving device for local backlight regulation |
| CN102262855A (en) * | 2011-08-04 | 2011-11-30 | 南京中电熊猫液晶显示科技有限公司 | Active driving OLED (Organic Light Emitting Diode) device |
| CN108417180A (en) * | 2018-03-31 | 2018-08-17 | 北京维信诺光电技术有限公司 | Driving circuit, display control panel, display device and preparation method thereof |
| CN111968569A (en) * | 2018-06-28 | 2020-11-20 | 京东方科技集团股份有限公司 | Pixel circuit, array substrate, driving method of array substrate and display panel |
-
2009
- 2009-05-18 CN CNA2009102035663A patent/CN101556764A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184708A (en) * | 2011-05-11 | 2011-09-14 | 冠捷显示科技（厦门）有限公司 | Novel passive matrix driving device for local backlight regulation |
| CN102262855A (en) * | 2011-08-04 | 2011-11-30 | 南京中电熊猫液晶显示科技有限公司 | Active driving OLED (Organic Light Emitting Diode) device |
| CN102262855B (en) * | 2011-08-04 | 2014-03-12 | 南京中电熊猫液晶显示科技有限公司 | Active driving OLED (Organic Light Emitting Diode) device |
| CN108417180A (en) * | 2018-03-31 | 2018-08-17 | 北京维信诺光电技术有限公司 | Driving circuit, display control panel, display device and preparation method thereof |
| CN111968569A (en) * | 2018-06-28 | 2020-11-20 | 京东方科技集团股份有限公司 | Pixel circuit, array substrate, driving method of array substrate and display panel |
| CN111968569B (en) * | 2018-06-28 | 2021-11-16 | 京东方科技集团股份有限公司 | Pixel circuit, array substrate, driving method of array substrate and display panel |
| US11315479B2 (en) | 2018-06-28 | 2022-04-26 | Boe Technology Group Co., Ltd. | Array substrate and method for driving the same, display panel |
| US11869413B2 (en) | 2018-06-28 | 2024-01-09 | Boe Technology Group Co., Ltd. | Pixel circuit, array substrate comprising the same and display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10356858B2 (en) | MicroLED display panel | |
| CN105989794B (en) | OLED display | |
| CN104992676B (en) | Driving voltage control method and device, array base palte, display device | |
| CN108538245B (en) | Display panel driving method, display panel and display device | |
| US10529701B2 (en) | MicroLED display panel | |
| CN104575382A (en) | Aging compensation system and method for OLED component | |
| CN100435198C (en) | Organic electro-luminescence display device and method of driving the same | |
| US20130169512A1 (en) | Electronic device and method for switching between first display and second display | |
| US20100123741A1 (en) | Method of driving a light source, light source apparatus for performing the method and display apparatus having the light source apparatus | |
| US9805647B2 (en) | Organic light emitting display including demultiplexer and driving method thereof | |
| US20070081321A1 (en) | Backlight unit and display apparatus having the same | |
| CN110047434B (en) | Compensation system and compensation method of organic light-emitting device | |
| US20040032213A1 (en) | Flat display panel | |
| CN202150459U (en) | AMOLED display | |
| CN1866338A (en) | Drive apparatus and drive method for light emitting display panel | |
| US10362651B2 (en) | Micro lighting device | |
| CN101093640B (en) | Dual-scan display device | |
| US10199362B1 (en) | MicroLED display panel | |
| CN101556764A (en) | Method for driving passive matrix organic light emitting diode display device | |
| CN103578391B (en) | Display device and image control method thereof | |
| JP2008268437A (en) | Organic el display | |
| KR20180121292A (en) | Light emitting diode display apparatus | |
| JP5793923B2 (en) | LIGHT EMITTING DEVICE, LIGHT EMITTING DEVICE DRIVE CIRCUIT, AND LIGHT EMITTING DEVICE DRIVE METHOD | |
| US20220036791A1 (en) | Driving method of display panel and display device | |
| JP2004191928A (en) | Light emitting diode display and drive method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091014 |