KR20020092028A - A dirving circuit of organic electro luminescence display for reducing power consumption - Google Patents
A dirving circuit of organic electro luminescence display for reducing power consumption Download PDFInfo
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- KR20020092028A KR20020092028A KR1020010030877A KR20010030877A KR20020092028A KR 20020092028 A KR20020092028 A KR 20020092028A KR 1020010030877 A KR1020010030877 A KR 1020010030877A KR 20010030877 A KR20010030877 A KR 20010030877A KR 20020092028 A KR20020092028 A KR 20020092028A
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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]
- G09G3/3216—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] using a passive matrix
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
- G09G2320/0214—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display with crosstalk due to leakage current of pixel switch in active matrix panels
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
본 발명은 전력소비를 절감을 위한 유기 전계 발광 디스플레이 구동회로에 관한 것으로, 보다 상세히 데이터의 출력 회로 최종단에 소비전력 저감부를 설치하여 스위칭시에 발생하는 누설 전류의 양과 역 전류의 흐름을 방지할 수 있는 전력소비를 절감을 위한 유기 전계 발광 디스플레이 구동회로에 관한 것이다.The present invention relates to an organic electroluminescent display driving circuit for reducing power consumption, and more particularly, to reduce the amount of leakage current generated during switching and reverse current flow by installing a power consumption reduction unit at the final stage of the data output circuit. The present invention relates to an organic electroluminescent display driving circuit for reducing power consumption.
일반적으로 평판 디스플레이의 수동 메트릭스(Passive matrix)구조의 패널 구동에서는 스캔라인(Row)을 순차적으로 주사하는 선 주사 방식을 사용하고, 데이터 라인(Column)의 영상 신호는 1번 스캔시에 1개의 데이터를 병렬로 인가하여 디스플레이하는 방식을 이용한 수동 구동방식을 채용하고 있다.In general, the panel driving of the passive matrix structure of a flat panel display uses a line scanning method that sequentially scans a scan line (row), and the image signal of the data line (Column) is one data in one scan. The manual driving method using the method of applying and displaying in parallel is adopted.
도 1는 종래의 유기 전계 발광 디스플레이를 구동하기 위한 회로 블록도로써, 입력부(1)에서 공중파 RF신호를 입력받아 조절부(3)에 전송하고, 상기 조절부(3)는 전원부(2)의 전원으로 조절되며 영상정보 저장부(4)로 저장하기 위한 영상신호를 출력하거나 영상정보 저장부(4)로부터 저장된 영상신호를 입력받는다.FIG. 1 is a circuit block diagram for driving a conventional organic electroluminescent display, and receives an RF signal from an input unit 1 and transmits the RF signal to an adjusting unit 3, and the adjusting unit 3 is connected to the power supply unit 2. It is controlled by a power source and outputs an image signal for storing to the image information storage unit 4 or receives a stored image signal from the image information storage unit 4.
상기 조절부(3)는 타이밍 조절부(5)의 타이밍 신호로 스캔구동부(10)와 데이터 구동부(40)에 조절신호를 인가하고, 상기 스캔구동부(30)는 스캔신호를 유기 전계 발광 디스플레이 패널(30)의 데이터 라인에 인가하며, 또한 상기 데이터 구동부(40)는 데이터 신호를 유기 전계 발광 디스플레이 패널(30)의 스캔라인에 인가하여 패널은 구동되게 된다.The control unit 3 applies an adjustment signal to the scan driver 10 and the data driver 40 as timing signals of the timing controller 5, and the scan driver 30 transmits the scan signal to the organic electroluminescent display panel. The data driver 40 is applied to the data line 30, and the data driver 40 applies the data signal to the scan line of the organic light emitting display panel 30 to drive the panel.
유기 전계 발광 디스플레이를 구동하기 위한 회로에서 1개의 데이터 라인에 연결된 스캔라인의 수는 패널의 총 스캔라인수가 연결되어 있다. 그래서, 데이터 인가시 주사하지 않는 스캔라인과의 캐패시턴스나 임피던스로 생기는 시간적 딜레이 및 파워 손실이 커지게 된다.In the circuit for driving the organic electroluminescent display, the number of scan lines connected to one data line is connected to the total number of scan lines of the panel. Therefore, time delay and power loss caused by capacitance or impedance with a scan line which does not scan when data is applied are increased.
그리고, 스캔 라인수가 더욱 많아지고, 패널의 사이즈가 커지면 수동 메트릭스 패널은 캐패시턴스 손실이 더욱 많아지고, 파워 손실이 커져 수동방식으로 구동하는데 한계가 생긴다.In addition, as the number of scan lines increases and the size of the panel increases, the passive matrix panel has a larger capacitance loss and a larger power loss, which causes limitations in driving the passive method.
이에 본 발명은 상기한 바와 같은 종래의 문제점을 해소시키기 위하여 안출된 것으로, 데이터의 출력 회로 최종단에 소비전력 저감부를 설치하여 스위칭시에 발생하는 누설 전류의 양과 역 전류의 흐름을 방지할 수 있는 전력소비를 절감을 위한 유기 전계 발광 디스플레이 구동회로를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the above-described problems, and the power consumption reduction unit is installed at the final stage of the data output circuit, thereby preventing the amount of leakage current and the flow of reverse current generated during switching. An object of the present invention is to provide an organic electroluminescent display driving circuit for reducing power consumption.
상기 목적을 달성하기 위한 본 발명의 유기 전계 발광 디스플레이 구동회로는 유기 전계 발광 패널이 데이터 구동부의 데이터신호와, 스캔 구동부의 스캔신호를 전달받아 디스플레이 하는 유기 전계 발광 디스플레이 구동회로에 있어서,In the organic electroluminescent display driving circuit of the present invention for achieving the above object is an organic electroluminescent display driving circuit in which the organic electroluminescent panel receives and displays the data signal of the data driver and the scan signal of the scan driver,
상기 데이터 구동부(10)와 유기 전계 발광 패널(30)의 사이에 누설전류와 역전류의 흐름을 방지할 수 있는 소비 전력 저감부(20)를 설치한 것으로 이루어짐을 특징으로 한다.The power consumption reducing unit 20 may be provided between the data driver 10 and the organic electroluminescent panel 30 to prevent the leakage current and the reverse current from flowing.
도 1는 종래의 유기 전계 발광 디스플레이를 구동하기 위한 회로 블럭도이다.1 is a circuit block diagram for driving a conventional organic electroluminescent display.
도 2는 본 발명에 따른 소비전력 저감부가 설치된 유기 전계 발광 디스플레이의 개략적인 회로 블럭도이다.2 is a schematic circuit block diagram of an organic electroluminescent display provided with a power consumption reduction unit according to the present invention.
도 3a 내지 3c는 도 2에 의한 소비전력 저감부에 적용할 수 있는 등가 소자들을 도시한 회로도이다.3A to 3C are circuit diagrams illustrating equivalent elements applicable to the power consumption reduction unit of FIG. 2.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1 : 입력부 2 : 전원부1 input unit 2 power unit
3 : 조절부 4 : 영상정보 저장부3: control unit 4: image information storage unit
5 : 타이킹 조절부 10 : 데이터 구동부5: Typing control unit 10: Data driver
20 : 소비 전력 저감부 30 : 유기 전계 발광 디스플레이 패널20: power consumption reduction unit 30: organic electroluminescent display panel
40 : 스캔 구동부40: scan driver
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
도 2는 본 발명에 따른 소비전력 저감부가 설치된 유기 전계 발광 디스플레이의 개략적인 회로 블록도로써, 공중파의 RF신호를 입력받은 조절부에서 조절신호를 인가 받는 데이터 구동부(10) 및 스캔구동부(40)와; 상기 데이터 구동부(10)에서 출력되는 데이터 신호와 상기 스캔 구동부(40)에서 출력되는 스캔 신호를 인가받아 디스플레이 구동하는 유기 전계 발광 디스플레이 패널(30)과; 상기 데이터 구동부(10)와 상기 유기 전계 발광 디스플레이 패널(30)의 사이에 설치된 누설 전류와 역 전류의 흐름을 방지할 수 있는 소비전력 저감부(20)로 구성되어 있다.FIG. 2 is a schematic circuit block diagram of an organic electroluminescent display provided with a power consumption reducing unit according to the present invention. The data driver 10 and the scan driver 40 receiving a control signal from a control unit receiving an RF signal of airwaves are shown in FIG. Wow; An organic electroluminescent display panel (30) for driving a display by receiving data signals output from the data driver (10) and scan signals output from the scan driver (40); The power consumption reducing unit 20 is configured to prevent the leakage current and the reverse current flowing between the data driver 10 and the organic light emitting display panel 30.
이러한 데이터 구동부(10)의 후단에 설치된 소비전력 저감부(20)는 상기 데이터 구동부(10)에서 출력된 데이터 신호가 유기 전계 발광 디스플레이 패널(30)으로 전송될 때, 다시 데이터 구동부(10)로 역류되어 누설되는 전류를 방지할 수 있고, 스캔 구동부(40)에서 출력된 스캔 신호가 상기 유기 전계 발광 디스플레이 패널(30)을 통하여 데이터 구동부(10)로 전달되는 역전류의 흐름도 방지 할 수 있어 전력 소비를 저감시키게 되는 것이다.The power consumption reduction unit 20 installed at the rear end of the data driver 10 is transferred back to the data driver 10 when the data signal output from the data driver 10 is transmitted to the organic electroluminescent display panel 30. It is possible to prevent the current flowing back due to leakage, and prevent the flow of the reverse current transmitted from the scan driver 40 to the data driver 10 through the organic electroluminescent display panel 30 to prevent power It will reduce consumption.
도 3a 내지 3c는 도 2에 의한 소비전력 저감부에 적용할 수 있는 등가 소자들을 도시한 회로도로써, 데이터 구동부(10)와 유기 전계 발광 디스플레이 패널(30)의 사이에는 도 3a의 다이오드를 설치하며, 이 다이오드의 애노드는 상기 데이터 구동부(10)에 연결하고, 캐소드는 유기 전계 발광 디스플레이 패널(30)에 연결하여 소비 전력을 저감시킬 수 있는 것이다.3A to 3C are circuit diagrams showing equivalent elements applicable to the power consumption reduction unit of FIG. 2, wherein the diode of FIG. 3A is disposed between the data driver 10 and the organic electroluminescent display panel 30. The anode of the diode is connected to the data driver 10 and the cathode is connected to the organic electroluminescent display panel 30 to reduce power consumption.
상기 다이오드와 등가적인 소자로써, 도 3b의 n형 트랜지스터와 도 3c의 p형트랜지스터를 설치할 수 있는 데, n형 트랜지스터의 드레인과 게이트를 연결하고, 드레인은 데이터 구동부와 연결하며, 소오스는 유기 전계 발광 디스플레이(30)과 연결하여 설치한다. 그리고, p형 트랜지스터의 드레인과 게이트를 연결하고, 소오스는 데이터 구동부와 연결하며, 드레인은 유기 전계 발광 디스플레이(30)과 연결하여 설치함으로써, 상기 다이오드와 등가의 작용으로 소비 전력을 저감시킬 수 있는 것이다.As an equivalent device to the diode, an n-type transistor of FIG. 3b and a p-type transistor of FIG. 3c may be installed, which connects a drain and a gate of the n-type transistor, a drain is connected to a data driver, and a source is an organic field It is installed in connection with the light emitting display 30. In addition, the drain and the gate of the p-type transistor are connected, the source is connected to the data driver, and the drain is connected to the organic electroluminescent display 30 to be installed, thereby reducing power consumption by an equivalent action with the diode. will be.
이러한 데이터 구동부(10)와 유기 전계 발광 디스플레이(30)의 사이에 설치된 소비 전력 저감부(20)는 데이터 구동부(10)로 역류되어 누설되는 전류를 방지할 수 있고, 스캔 구동부(40)에서 출력된 스캔 신호가 상기 유기 전계 발광 디스플레이 패널(30)을 통하여 데이터 구동부(10)로 전달되는 역전류의 흐름도 방지 할 수 있는 모든 등가의 회로를 적용할 수 있는 것이고, 이 등가의 회로 또한 본 발명의 발명 사상에 적용된 다 할 것이다.The power consumption reducing unit 20 installed between the data driver 10 and the organic electroluminescent display 30 may prevent a current from flowing back due to the data driver 10 and being output from the scan driver 40. All equivalent circuits capable of preventing the flow of reverse current transmitted to the data driver 10 through the organic electroluminescent display panel 30 can be applied. It will be applied to the idea of the invention.
이상에서 상세히 설명한 바와 같이 본 발명에 따른 전력소비를 절감을 위한 유기 전계 발광 디스플레이 구동회로는, 데이터의 출력 회로 최종단에 소비전력 저감부를 설치하여 스위칭시에 발생하는 누설 전류의 양과 역 전류의 흐름을 방지할 수 있는 효과가 있다.As described in detail above, the organic electroluminescent display driving circuit for reducing power consumption according to the present invention has a power consumption reduction unit installed at the final stage of the data output circuit, such that the amount of leakage current and reverse current flows during switching. There is an effect that can prevent.
본 발명은 구체적인 예에 대해서만 상세히 설명되었지만 본 발명의 기술사상 범위 내에서 다양한 변형 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속함은 당연한 것이다.Although the invention has been described in detail only with respect to specific examples, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.
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| KR100846588B1 (en) * | 2006-08-01 | 2008-07-16 | 삼성에스디아이 주식회사 | Apparatus for driving electrophoretic display comprising organic thin film transistor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0883056A (en) * | 1994-09-09 | 1996-03-26 | Sony Corp | Plasma drive circuit |
| KR100218842B1 (en) * | 1995-04-10 | 1999-09-01 | 가네꼬 히사시 | Driving circuit of plasma display panel |
| JP2000330524A (en) * | 1999-05-21 | 2000-11-30 | Matsushita Electric Ind Co Ltd | Driving method of liquid crystal display device |
| US6417827B1 (en) * | 1999-02-26 | 2002-07-09 | Hitachi, Ltd. | Liquid crystal display device having a wide dynamic range driver |
-
2001
- 2001-06-01 KR KR1020010030877A patent/KR20020092028A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0883056A (en) * | 1994-09-09 | 1996-03-26 | Sony Corp | Plasma drive circuit |
| KR100218842B1 (en) * | 1995-04-10 | 1999-09-01 | 가네꼬 히사시 | Driving circuit of plasma display panel |
| US6417827B1 (en) * | 1999-02-26 | 2002-07-09 | Hitachi, Ltd. | Liquid crystal display device having a wide dynamic range driver |
| JP2000330524A (en) * | 1999-05-21 | 2000-11-30 | Matsushita Electric Ind Co Ltd | Driving method of liquid crystal display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100846588B1 (en) * | 2006-08-01 | 2008-07-16 | 삼성에스디아이 주식회사 | Apparatus for driving electrophoretic display comprising organic thin film transistor |
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