JP4243760B2 - 発光ダイオード用駆動回路 - Google Patents
発光ダイオード用駆動回路 Download PDFInfo
- Publication number
- JP4243760B2 JP4243760B2 JP2003423676A JP2003423676A JP4243760B2 JP 4243760 B2 JP4243760 B2 JP 4243760B2 JP 2003423676 A JP2003423676 A JP 2003423676A JP 2003423676 A JP2003423676 A JP 2003423676A JP 4243760 B2 JP4243760 B2 JP 4243760B2
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- Prior art keywords
- current
- thin film
- film transistor
- led
- gate
- 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.)
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- 239000010409 thin film Substances 0.000 claims description 39
- 239000004020 conductor Substances 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002800 charge carrier Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229920001621 AMOLED Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
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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
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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]
- G09G3/3225—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 an active matrix
- G09G3/3233—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 an active matrix with pixel circuitry controlling the current through the light-emitting element
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/043—Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
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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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
-
- 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
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
- G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
Landscapes
- Engineering & Computer Science (AREA)
- 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)
- Control Of El Displays (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
11 電流測定兼電圧調整装置
A 走査信号導線
C 容量
D データ導線
LED 発光ダイオード
T1,T2,T3 薄膜ダイオード
Claims (2)
- 発光ダイオード(LED)を持ちかつ容量(C)及び電流フィードバックを持つ映像面の画素(10)用の駆動回路であって、発光ダイオード(LED)用の電流駆動トランジスタとしての第1の薄膜トランジスタ(T1)、及び第1の通電電極を第1の薄膜トランジスタ(T1)のゲートに接続されかつ第2の通電電極をデータ導線(D)に接続されかつゲート電極を走査信号導線(A)に接続される第2の薄膜トランジスタ(T2)が設けられているものにおいて、第3の薄膜トランジスタ(T3)が設けられて、駆動導線を介してそのゲートを駆動される際、電流駆動トランジスタ(T1)の出力端からダイオード駆動電流を取出して、電流測定兼電圧調整回路(11)へ導き、電流測定兼電圧調整回路(11)が、電流測定結果及び電圧比較に関係する電圧信号をデータ導線(D)へ与え、発光ダイオード(LED)が、第3の薄膜トランジスタ(T3)のゲートの駆動中に、その非線形開閉特性により、電流測定兼電圧調整回路(11)への電流転向用スイッチとして作用することを特徴とする、駆動回路。
- 第2及び第3の薄膜トランジスタ(T2,T3)のゲート電極が同じ走査信号導線(A)に接続されていることを特徴とする、請求項1に記載の駆動回路。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10254511A DE10254511B4 (de) | 2002-11-22 | 2002-11-22 | Aktiv-Matrix-Ansteuerschaltung |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004192000A JP2004192000A (ja) | 2004-07-08 |
JP4243760B2 true JP4243760B2 (ja) | 2009-03-25 |
Family
ID=32240280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003423676A Expired - Fee Related JP4243760B2 (ja) | 2002-11-22 | 2003-11-19 | 発光ダイオード用駆動回路 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7432891B2 (ja) |
JP (1) | JP4243760B2 (ja) |
KR (1) | KR100580956B1 (ja) |
DE (1) | DE10254511B4 (ja) |
FR (1) | FR2847705B1 (ja) |
TW (1) | TWI241550B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101462695B1 (ko) | 2006-12-11 | 2014-11-18 | 리하이 유니버시티 | 액티브 매트릭스 디스플레이 및 방법 |
Families Citing this family (54)
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GB0218170D0 (en) * | 2002-08-06 | 2002-09-11 | Koninkl Philips Electronics Nv | Electroluminescent display devices |
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FR2857146A1 (fr) * | 2003-07-03 | 2005-01-07 | Thomson Licensing Sa | Dispositif d'affichage d'images a matrice active |
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EP1622120A1 (fr) * | 2004-07-29 | 2006-02-01 | Thomson Licensing | Dispositif d'affichage à matrice active et procédé de commande d'un tel dispositif |
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KR100613093B1 (ko) * | 2004-12-24 | 2006-08-16 | 삼성에스디아이 주식회사 | 데이터 집적회로 및 이를 이용한 발광 표시장치 |
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DE10009204A1 (de) * | 2000-02-26 | 2001-08-30 | Univ Stuttgart | Verfahren zur Ansteuerung von aktiv adressierten OLED-Displays |
US20020030647A1 (en) * | 2000-06-06 | 2002-03-14 | Michael Hack | Uniform active matrix oled displays |
JP2002091377A (ja) * | 2000-09-11 | 2002-03-27 | Hitachi Ltd | 有機elディスプレイ装置 |
TW561445B (en) * | 2001-01-02 | 2003-11-11 | Chi Mei Optoelectronics Corp | OLED active driving system with current feedback |
SG107573A1 (en) | 2001-01-29 | 2004-12-29 | Semiconductor Energy Lab | Light emitting device |
JP3819723B2 (ja) * | 2001-03-30 | 2006-09-13 | 株式会社日立製作所 | 表示装置及びその駆動方法 |
JP3800050B2 (ja) * | 2001-08-09 | 2006-07-19 | 日本電気株式会社 | 表示装置の駆動回路 |
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2002
- 2002-11-22 DE DE10254511A patent/DE10254511B4/de not_active Expired - Lifetime
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2003
- 2003-10-20 US US10/689,352 patent/US7432891B2/en active Active
- 2003-10-21 TW TW092129074A patent/TWI241550B/zh not_active IP Right Cessation
- 2003-10-21 FR FR0312376A patent/FR2847705B1/fr not_active Expired - Fee Related
- 2003-11-19 JP JP2003423676A patent/JP4243760B2/ja not_active Expired - Fee Related
- 2003-11-21 KR KR1020030082980A patent/KR100580956B1/ko active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101462695B1 (ko) | 2006-12-11 | 2014-11-18 | 리하이 유니버시티 | 액티브 매트릭스 디스플레이 및 방법 |
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Publication number | Publication date |
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KR20040045352A (ko) | 2004-06-01 |
DE10254511B4 (de) | 2008-06-05 |
US7432891B2 (en) | 2008-10-07 |
DE10254511A1 (de) | 2004-06-17 |
TW200415559A (en) | 2004-08-16 |
JP2004192000A (ja) | 2004-07-08 |
KR100580956B1 (ko) | 2006-05-17 |
FR2847705A1 (fr) | 2004-05-28 |
US20040100430A1 (en) | 2004-05-27 |
TWI241550B (en) | 2005-10-11 |
FR2847705B1 (fr) | 2006-04-28 |
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