JP4311340B2 - 定電流駆動装置 - Google Patents
定電流駆動装置 Download PDFInfo
- Publication number
- JP4311340B2 JP4311340B2 JP2004326794A JP2004326794A JP4311340B2 JP 4311340 B2 JP4311340 B2 JP 4311340B2 JP 2004326794 A JP2004326794 A JP 2004326794A JP 2004326794 A JP2004326794 A JP 2004326794A JP 4311340 B2 JP4311340 B2 JP 4311340B2
- Authority
- JP
- Japan
- Prior art keywords
- current
- current mirror
- constant current
- field effect
- mirror
- 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.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000005669 field effect Effects 0.000 description 73
- 239000011159 matrix material Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005401 electroluminescence Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
- G05F3/262—Current mirrors using field-effect transistors only
-
- 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]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3283—Details of drivers for data electrodes in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements
-
- 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]
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of Electrical Variables (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Voltage And Current In General (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Amplifiers (AREA)
Description
I=Vref÷R
となり一定の電流値となる。ここで、Vrefは電池6によるリファレンス電圧、Rは抵抗器7の抵抗値である。
I=Vref÷nR (nは並列に接続されるカレントミラーの数)
となり一定の電流値となる。
カレントミラー回路の選択が変更されるたびに、補正値が、選択しているカレントミラー回路のミラー側の特性のバラツキに対応した補正値に変更され、選択しているカレントミラー回路のリファレンス側に当該補正値に応じた一定の電流が発生する。
Claims (3)
- リファレンス側及びミラー側より成る複数のカレントミラー回路と、
前記複数のカレントミラー回路の夫々のリファレンス側に一定の電流を発生させる定電流発生部と、
前記複数のカレントミラー回路の夫々のリファレンス側とミラー側の駆動信号入力部と接続する電流保持用容量素子と、
前記複数のカレントミラー回路の夫々のリファレンス側及びミラー側を電気的に接続する第1のスイッチ手段と、
前記第1のスイッチ手段と連動し、前記定電流発生部を前記複数のカレントミラー回路のリファレンス側に接続する第2のスイッチ手段と、
前記複数のカレントミラー回路を一定の周期で順次選択して、選択中のカレントミラー回路に係る前記第1のスイッチ手段及び前記第2のスイッチ手段をオンにする順次選択手段と、
前記複数のカレントミラー回路ごとに、各カレントミラー回路のミラー側の特性のバラツキに対応した補正値が予め記憶されている記憶手段と、
前記順次選択手段による前記複数のカレントミラー回路の選択の周期に合わせて、前記選択中のカレントミラー回路のミラー側の特性に対応する補正値を前記記憶手段から読み出し、前記定電流発生部が発生させる電流を前記補正値に基づいて切り換えさせる選択・読み出し手段と
を備える定電流駆動装置。 - 請求項1記載の定電流駆動装置において、
前記第1のスイッチ手段及び前記第2のスイッチ手段がオンのとき、前記複数のカレントミラー回路のうち、前記順次選択手段により選択されたカレントミラー回路のリファレンス側及びミラー側に前記電流保持用容量素子から駆動信号を供給するとともに当該電流保持用容量素子に充電を行い、
前記第1のスイッチ手段及び前記第2のスイッチ手段がオフのとき、選択されていない夫々のカレントミラー回路のミラー側に対してのみ前記電流保持用容量素子から駆動信号を供給する
定電流駆動装置。 - 請求項1又は2記載の定電流駆動装置において、
前記選択・読み出し手段は、所定周波数のクロック信号及び前記複数のカレントミラー回路から該当カレントミラー回路を選択するための選択信号を発生し、
前記順次選択手段は、前記クロック信号の周波数で前記選択信号に基づいてカレントミラー回路を選択する
定電流駆動装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004326794A JP4311340B2 (ja) | 2004-11-10 | 2004-11-10 | 定電流駆動装置 |
TW094138251A TW200636654A (en) | 2004-11-10 | 2005-11-01 | Constant-current drive |
DE602005024292T DE602005024292D1 (de) | 2004-11-10 | 2005-11-09 | Konstantstromtreiber |
KR1020067013364A KR101127494B1 (ko) | 2004-11-10 | 2005-11-09 | 정전류 구동장치 |
PCT/JP2005/020978 WO2006051992A1 (ja) | 2004-11-10 | 2005-11-09 | 定電流駆動装置 |
US10/585,338 US7808284B2 (en) | 2004-11-10 | 2005-11-09 | Constant current drive device |
EP05806605A EP1811358B1 (en) | 2004-11-10 | 2005-11-09 | Constant current driving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004326794A JP4311340B2 (ja) | 2004-11-10 | 2004-11-10 | 定電流駆動装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006139405A JP2006139405A (ja) | 2006-06-01 |
JP4311340B2 true JP4311340B2 (ja) | 2009-08-12 |
Family
ID=36336657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004326794A Expired - Fee Related JP4311340B2 (ja) | 2004-11-10 | 2004-11-10 | 定電流駆動装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7808284B2 (ja) |
EP (1) | EP1811358B1 (ja) |
JP (1) | JP4311340B2 (ja) |
KR (1) | KR101127494B1 (ja) |
DE (1) | DE602005024292D1 (ja) |
TW (1) | TW200636654A (ja) |
WO (1) | WO2006051992A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4809030B2 (ja) * | 2005-09-28 | 2011-11-02 | 株式会社リコー | 駆動回路及びその駆動回路を用いた電子機器 |
KR20100076971A (ko) * | 2007-09-12 | 2010-07-06 | 코닝 인코포레이티드 | 광역 동적 범위에 걸쳐 정밀 전류를 생성하기 위한 방법 및 장치 |
JP4565283B2 (ja) | 2008-06-10 | 2010-10-20 | マイクロン テクノロジー, インク. | 電圧調整系 |
US8183892B2 (en) | 2009-06-05 | 2012-05-22 | Fairchild Semiconductor Corporation | Monolithic low impedance dual gate current sense MOSFET |
US8816600B2 (en) | 2011-05-13 | 2014-08-26 | Nxp B.V. | Method of power and temperature control for high brightness light emitting diodes |
CN102722213B (zh) * | 2012-06-26 | 2014-03-26 | 昆明物理研究所 | 应用倒置电压跟随器的光伏探测器读出单元电路 |
CN103632635B (zh) * | 2013-11-08 | 2016-04-13 | 电子科技大学 | 功率管分组混合驱动电路 |
CN104485073B (zh) * | 2014-12-25 | 2017-02-22 | 广东威创视讯科技股份有限公司 | Led显示屏亮度调节方法及*** |
US20180348805A1 (en) * | 2017-05-31 | 2018-12-06 | Silicon Laboratories Inc. | Bias Current Generator |
US10720098B2 (en) * | 2017-11-15 | 2020-07-21 | Facebook Technologies, Llc | Pulse-width-modulation control of micro LED |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62121492A (ja) * | 1985-11-22 | 1987-06-02 | 日立超エル・エス・アイエンジニアリング株式会社 | デイスプレイモジユ−ル |
JPH0219909A (ja) * | 1988-07-08 | 1990-01-23 | Canon Inc | 定電流回路 |
US5963071A (en) * | 1998-01-22 | 1999-10-05 | Nanoamp Solutions, Inc. | Frequency doubler with adjustable duty cycle |
JP3315652B2 (ja) * | 1998-09-07 | 2002-08-19 | キヤノン株式会社 | 電流出力回路 |
KR100296113B1 (ko) * | 1999-06-03 | 2001-07-12 | 구본준, 론 위라하디락사 | 전기발광소자 |
KR100566813B1 (ko) * | 2000-02-03 | 2006-04-03 | 엘지.필립스 엘시디 주식회사 | 일렉트로 루미네센스 셀 구동회로 |
KR100327374B1 (ko) * | 2000-03-06 | 2002-03-06 | 구자홍 | 액티브 구동 회로 |
JP3610923B2 (ja) * | 2001-05-30 | 2005-01-19 | ソニー株式会社 | アクティブマトリクス型表示装置およびアクティブマトリクス型有機エレクトロルミネッセンス表示装置、並びにそれらの駆動方法 |
CN100371962C (zh) * | 2001-08-29 | 2008-02-27 | 株式会社半导体能源研究所 | 发光器件、发光器件驱动方法、以及电子设备 |
JP2003187988A (ja) * | 2001-12-20 | 2003-07-04 | Sharp Corp | 白色発光ダイオードの駆動装置 |
KR100618574B1 (ko) * | 2001-12-29 | 2006-08-31 | 엘지.필립스 엘시디 주식회사 | 유기 전계 발광 소자의 구동 회로 |
JP2003273749A (ja) * | 2002-03-18 | 2003-09-26 | Seiko Epson Corp | 信号伝送装置及び信号伝送方法、電子装置並びに電子機器 |
JP3866606B2 (ja) * | 2002-04-08 | 2007-01-10 | Necエレクトロニクス株式会社 | 表示装置の駆動回路およびその駆動方法 |
US7271784B2 (en) * | 2002-12-18 | 2007-09-18 | Semiconductor Energy Laboratory Co., Ltd. | Display device and driving method thereof |
JP4662698B2 (ja) * | 2003-06-25 | 2011-03-30 | ルネサスエレクトロニクス株式会社 | 電流源回路、並びに電流設定方法 |
-
2004
- 2004-11-10 JP JP2004326794A patent/JP4311340B2/ja not_active Expired - Fee Related
-
2005
- 2005-11-01 TW TW094138251A patent/TW200636654A/zh not_active IP Right Cessation
- 2005-11-09 US US10/585,338 patent/US7808284B2/en not_active Expired - Fee Related
- 2005-11-09 KR KR1020067013364A patent/KR101127494B1/ko not_active IP Right Cessation
- 2005-11-09 EP EP05806605A patent/EP1811358B1/en not_active Expired - Fee Related
- 2005-11-09 DE DE602005024292T patent/DE602005024292D1/de active Active
- 2005-11-09 WO PCT/JP2005/020978 patent/WO2006051992A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
TW200636654A (en) | 2006-10-16 |
EP1811358A4 (en) | 2009-01-21 |
EP1811358B1 (en) | 2010-10-20 |
US7808284B2 (en) | 2010-10-05 |
US20090121750A1 (en) | 2009-05-14 |
JP2006139405A (ja) | 2006-06-01 |
WO2006051992A1 (ja) | 2006-05-18 |
EP1811358A1 (en) | 2007-07-25 |
TWI309402B (ja) | 2009-05-01 |
KR101127494B1 (ko) | 2012-03-23 |
DE602005024292D1 (de) | 2010-12-02 |
KR20070085046A (ko) | 2007-08-27 |
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