JP5313845B2 - 電源供給装置、これを含む表示装置、及びその駆動方法 - Google Patents
電源供給装置、これを含む表示装置、及びその駆動方法 Download PDFInfo
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- JP5313845B2 JP5313845B2 JP2009261284A JP2009261284A JP5313845B2 JP 5313845 B2 JP5313845 B2 JP 5313845B2 JP 2009261284 A JP2009261284 A JP 2009261284A JP 2009261284 A JP2009261284 A JP 2009261284A JP 5313845 B2 JP5313845 B2 JP 5313845B2
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- power supply
- voltage
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- 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
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/60—Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
-
- 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
Description
20 走査駆動部
30 データ駆動部
40、70 直流−直流コンバータ
50、60 電源電圧制御部
52 増幅部
54、62 アナログ−デジタルコンバータ
56、63 フィードバック制御部
58 フィードバック電圧調節部
61 増幅部
64 デジタル−アナログコンバータ
65 バッファー
66 フィードバック電圧生成部
Claims (6)
- 複数の発光素子を含む表示パネルに電源電圧を供給する電源電圧供給装置において、
前記表示パネルに流れるパネル電流を感知して、前記パネル電流及び前記電源電圧に応じてフィードバック電圧を調節する電源電圧制御部、及び
前記フィードバック電圧に応じて前記電源電圧を生成して前記複数の発光素子の各々に供給する直流−直流コンバータ
を含み、
前記電源電圧制御部は、
前記パネル電流に対応するパネル電流データ及び前記電源電圧に対応する所定の目標値を検出し、前記電源電圧が前記目標値と同一になるように前記フィードバック電圧を制御するための複数のフィードバック電圧制御信号を生成するフィードバック制御部、及び
前記複数のフィードバック電圧制御信号に応じて前記フィードバック電圧を調節するフィードバック電圧調節部
を含み、
前記フィードバック電圧調節部は、
前記直流−直流コンバータから前記電源電圧が供給される電源線に一端が接続された第1抵抗、
前記第1抵抗の他端及び前記直流−直流コンバータから基準電圧が供給される基準電圧端の間に直列連結された複数の第2抵抗、及び
前記複数の第2抵抗の各々に並列連結されて、前記複数のフィードバック電圧制御信号のうちの対応するフィードバック電圧制御信号に応じてスイッチング動作する複数のスイッチング素子
を含み、
前記フィードバック電圧は、前記複数の第2抵抗及び前記第1抵抗の抵抗比により決定される
ことを特徴とする、電源電圧供給装置。 - 前記直流−直流コンバータは、前記電源線を通して前記複数の発光素子のカソード電極に前記電源電圧を供給し、
前記電源電圧制御部は、前記パネル電流が流れる前記電源線上に形成された感知抵抗を含む
ことを特徴とする、請求項1に記載の電源電圧供給装置。 - 前記電源電圧制御部は、
前記感知抵抗の両端の電圧差を増幅して増幅電圧を出力する増幅部をさらに含む
ことを特徴とする、請求項2に記載の電源電圧供給装置。 - 前記電源電圧制御部は、
前記増幅電圧に応じて前記パネル電流データを出力するアナログ−デジタルコンバータをさらに含む
ことを特徴とする、請求項3に記載の電源電圧供給装置。 - 複数の発光素子を含み、所定の電源電圧が供給される表示パネル、
前記表示パネルに流れるパネル電流を感知して、前記パネル電流及び前記電源電圧に応じてフィードバック電圧を調節する電源電圧制御部、及び
前記フィードバック電圧に応じて前記電源電圧を生成して前記複数の発光素子の各々に供給する直流−直流コンバータ
を含み、
前記電源電圧制御部は、
前記パネル電流に対応するパネル電流データ及び前記電源電圧に対応する所定の目標値を検出し、前記電源電圧が前記目標値と同一になるように前記フィードバック電圧を制御するための複数のフィードバック電圧制御信号を生成するフィードバック制御部、及び
前記複数のフィードバック電圧制御信号に応じて前記フィードバック電圧を調節するフィードバック電圧調節部
を含み、
前記フィードバック電圧調節部は、
前記直流−直流コンバータから前記電源電圧が供給される電源線に一端が接続された第1抵抗、
前記第1抵抗の他端及び前記直流−直流コンバータから基準電圧が供給される基準電圧端の間に直列連結された複数の第2抵抗、及び
前記複数の第2抵抗の各々に並列連結されて、前記複数のフィードバック電圧制御信号のうちの対応するフィードバック電圧制御信号に応じてスイッチング動作する複数のスイッチング素子
を含み、
前記フィードバック電圧は、前記複数の第2抵抗及び前記第1抵抗の抵抗比により決定される
ことを特徴とする、表示装置。 - 電源電圧制御部が、複数の発光素子を含む表示パネルに流れるパネル電流を感知して、前記パネル電流及び電源電圧に応じてフィードバック電圧を調節する段階、及び
直流−直流コンバータが、前記フィードバック電圧に応じて前記電源電圧を生成して前記複数の発光素子の各々に供給する段階
を含み、
前記フィードバック電圧を調節する段階は、
前記電源電圧制御部が含むフィードバック制御部が、前記パネル電流に対応するパネル電流データ及び前記電源電圧に対応する所定の目標値を検出し、前記電源電圧が前記目標値と同一になるように前記フィードバック電圧を制御するための複数のフィードバック電圧制御信号を生成する段階、及び
前記電源電圧制御部が含むフィードバック電圧調節部が、前記複数のフィードバック電圧制御信号に応じて前記フィードバック電圧を調節する段階
を含み、
前記フィードバック電圧調節部は、
前記直流−直流コンバータから前記電源電圧が供給される電源線に一端が接続された第1抵抗、
前記第1抵抗の他端及び前記直流−直流コンバータから基準電圧が供給される基準電圧端の間に直列連結された複数の第2抵抗、及び
前記複数の第2抵抗の各々に並列連結されて、前記複数のフィードバック電圧制御信号のうちの対応するフィードバック電圧制御信号に応じてスイッチング動作する複数のスイッチング素子
を含み、
前記フィードバック電圧は、前記複数の第2抵抗及び前記第1抵抗の抵抗比により決定される
ことを特徴とする、表示装置の駆動方法。
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KR20090076412A KR101107161B1 (ko) | 2009-08-18 | 2009-08-18 | 전원 공급 장치, 이를 포함하는 표시 장치 및 그 구동 방법 |
KR10-2009-0076412 | 2009-08-18 |
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JP2011039471A JP2011039471A (ja) | 2011-02-24 |
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JP2012110596A Active JP5592434B2 (ja) | 2009-08-18 | 2012-05-14 | 電源供給装置、これを含む表示装置、及びその駆動方法 |
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US (1) | US9136754B2 (ja) |
EP (1) | EP2306627A3 (ja) |
JP (2) | JP5313845B2 (ja) |
KR (1) | KR101107161B1 (ja) |
CN (1) | CN101998733B (ja) |
TW (1) | TWI435197B (ja) |
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2009
- 2009-08-18 KR KR20090076412A patent/KR101107161B1/ko active IP Right Grant
- 2009-11-16 JP JP2009261284A patent/JP5313845B2/ja active Active
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- 2010-03-09 US US12/659,445 patent/US9136754B2/en active Active
- 2010-04-06 CN CN2010101516156A patent/CN101998733B/zh active Active
- 2010-04-15 TW TW99111749A patent/TWI435197B/zh active
- 2010-07-01 EP EP20100168182 patent/EP2306627A3/en not_active Ceased
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Also Published As
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EP2306627A2 (en) | 2011-04-06 |
JP2011039471A (ja) | 2011-02-24 |
JP2012198547A (ja) | 2012-10-18 |
EP2306627A3 (en) | 2011-09-14 |
CN101998733A (zh) | 2011-03-30 |
TWI435197B (zh) | 2014-04-21 |
US20110043505A1 (en) | 2011-02-24 |
KR101107161B1 (ko) | 2012-01-25 |
JP5592434B2 (ja) | 2014-09-17 |
TW201107922A (en) | 2011-03-01 |
KR20110018782A (ko) | 2011-02-24 |
CN101998733B (zh) | 2013-12-18 |
US9136754B2 (en) | 2015-09-15 |
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