CN100378540C - 灯驱动器件以及含有其的背光组件和液晶显示装置 - Google Patents
灯驱动器件以及含有其的背光组件和液晶显示装置 Download PDFInfo
- Publication number
- CN100378540C CN100378540C CNB2003101248701A CN200310124870A CN100378540C CN 100378540 C CN100378540 C CN 100378540C CN B2003101248701 A CNB2003101248701 A CN B2003101248701A CN 200310124870 A CN200310124870 A CN 200310124870A CN 100378540 C CN100378540 C CN 100378540C
- Authority
- CN
- China
- Prior art keywords
- lamp
- node
- electrically connected
- signal
- detection part
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 32
- 238000001514 detection method Methods 0.000 claims abstract description 81
- 239000003990 capacitor Substances 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims 7
- 230000007257 malfunction Effects 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000037361 pathway Effects 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 17
- 239000000758 substrate Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005669 field effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (23)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR72490/02 | 2002-11-20 | ||
KR72490/2002 | 2002-11-20 | ||
KR1020020072490A KR100897508B1 (ko) | 2002-11-20 | 2002-11-20 | 램프 구동 장치와, 이를 갖는 백라이트 어셈블리 및 액정표시 장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1515940A CN1515940A (zh) | 2004-07-28 |
CN100378540C true CN100378540C (zh) | 2008-04-02 |
Family
ID=32322268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2003101248701A Expired - Fee Related CN100378540C (zh) | 2002-11-20 | 2003-11-20 | 灯驱动器件以及含有其的背光组件和液晶显示装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7456819B2 (zh) |
JP (1) | JP2004311396A (zh) |
KR (1) | KR100897508B1 (zh) |
CN (1) | CN100378540C (zh) |
TW (1) | TW200500701A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009129650A1 (zh) * | 2008-04-22 | 2009-10-29 | 光远科技股份有限公司 | 液晶显示器led背光装置的衰减补偿方法和液晶显示器 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101012800B1 (ko) * | 2004-05-13 | 2011-02-08 | 삼성전자주식회사 | 표시 장치용 광원의 구동 장치 |
KR101128241B1 (ko) * | 2004-05-31 | 2012-03-26 | 엘지디스플레이 주식회사 | 액정표시장치의 램프구동장치 |
KR101119782B1 (ko) | 2004-12-31 | 2012-03-23 | 엘지디스플레이 주식회사 | 휘도의 균일도가 향상된 백라이트 |
KR101170949B1 (ko) * | 2005-06-03 | 2012-08-03 | 엘지디스플레이 주식회사 | 액정표시장치용 외부전극형광램프 |
TWI330346B (en) | 2005-06-15 | 2010-09-11 | Chi Mei Optoelectronics Corp | Liquid crystal display, backlight module and lamp driving apparatus thereof |
CN100443994C (zh) * | 2005-06-17 | 2008-12-17 | 群康科技(深圳)有限公司 | 背光开路保护电路 |
KR101137868B1 (ko) * | 2005-06-30 | 2012-04-23 | 엘지디스플레이 주식회사 | 백라이트 유닛 및 그의 구동방법 |
CN1953632B (zh) * | 2005-10-20 | 2010-12-08 | 鸿富锦精密工业(深圳)有限公司 | 开路保护电路 |
CN101009084B (zh) * | 2006-01-27 | 2011-09-14 | 奇美电子股份有限公司 | 液晶显示器、背光模组及其灯管驱动装置 |
US7642732B2 (en) * | 2006-04-26 | 2010-01-05 | Panasonic Corporation | Dielectric barrier discharge lamp lighting apparatus and method of detecting the number of normally lighting dielectric barrier discharge lamps |
KR20070109223A (ko) * | 2006-05-10 | 2007-11-15 | 엘지이노텍 주식회사 | 액정표시장치의 램프 구동장치 |
KR101232156B1 (ko) * | 2006-06-05 | 2013-02-12 | 엘지디스플레이 주식회사 | 액정표시장치 |
KR101257926B1 (ko) * | 2006-06-07 | 2013-04-24 | 엘지디스플레이 주식회사 | 액정 표시 장치의 백라이트 유닛 및 이의 구동 방법 |
JP5283872B2 (ja) * | 2006-09-27 | 2013-09-04 | シスメックス株式会社 | 腫瘍細胞に対する阻害剤の増殖抑制効果を評価する方法、及び腫瘍細胞の増殖を阻害する化合物をスクリーニングする方法 |
JP2008083584A (ja) * | 2006-09-28 | 2008-04-10 | Nec Lcd Technologies Ltd | 液晶パネルモジュール及び液晶表示装置 |
TWI377534B (en) * | 2007-07-06 | 2012-11-21 | Chimei Innolux Corp | Light sources control circuit |
KR101384059B1 (ko) * | 2007-07-13 | 2014-04-10 | 엘지디스플레이 주식회사 | 백라이트 유닛 구동장치 |
CN101351072B (zh) * | 2007-07-20 | 2012-03-14 | 群康科技(深圳)有限公司 | 光源控制电路 |
JP2009251157A (ja) * | 2008-04-03 | 2009-10-29 | Hitachi Displays Ltd | 液晶表示装置 |
KR101269331B1 (ko) * | 2008-10-28 | 2013-05-29 | 포항공과대학교 산학협력단 | 백라이트 유닛 구동장치 |
WO2010093449A2 (en) * | 2009-02-11 | 2010-08-19 | Anthony Mo | Thermoelectric feedback circuit |
CN109906404B (zh) * | 2016-11-01 | 2022-03-04 | 夏普株式会社 | 背光装置、以及具备该背光装置的显示装置 |
Citations (6)
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CN1144341A (zh) * | 1994-10-28 | 1997-03-05 | 三星电子株式会社 | Lcd的背景照明电路 |
US5615093A (en) * | 1994-08-05 | 1997-03-25 | Linfinity Microelectronics | Current synchronous zero voltage switching resonant topology |
US5930126A (en) * | 1996-03-26 | 1999-07-27 | The Genlyte Group Incorporated | Ballast shut-down circuit responsive to an unbalanced load condition in a single lamp ballast or in either lamp of a two-lamp ballast |
US20020003525A1 (en) * | 2000-07-06 | 2002-01-10 | Hwang Beom Young | Driving circuit for LCD backlight |
US20020075223A1 (en) * | 2000-12-18 | 2002-06-20 | Jason Chen | Back lighting source module for liquid crystal display |
CN1368789A (zh) * | 1999-11-09 | 2002-09-11 | 凹凸科技国际股份有限公司 | 高效率可适型直流/交流转换器 |
Family Cites Families (10)
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US6127785A (en) * | 1992-03-26 | 2000-10-03 | Linear Technology Corporation | Fluorescent lamp power supply and control circuit for wide range operation |
JPH06267674A (ja) * | 1993-03-16 | 1994-09-22 | Taiyo Yuden Co Ltd | 冷陰極管点灯装置 |
US5777439A (en) * | 1996-03-07 | 1998-07-07 | Osram Sylvania Inc. | Detection and protection circuit for fluorescent lamps operating at failure mode |
US6259615B1 (en) * | 1999-07-22 | 2001-07-10 | O2 Micro International Limited | High-efficiency adaptive DC/AC converter |
KR20010108645A (ko) * | 2000-05-30 | 2001-12-08 | 송재인 | 엘씨디 백라이트용 인버터의 보호회로 |
JP2002110388A (ja) * | 2000-09-29 | 2002-04-12 | Nec Mitsubishi Denki Visual Systems Kk | 放電管点灯装置 |
GB0026111D0 (en) * | 2000-10-25 | 2000-12-13 | Raytheon Marine Ltd | Fluorescent lamp driver circuit |
KR100401100B1 (ko) * | 2000-11-22 | 2003-10-10 | 삼성전기주식회사 | 엘시디 백라이트 인버터 |
TWI256860B (en) * | 2001-06-29 | 2006-06-11 | Hon Hai Prec Ind Co Ltd | Multi-tube driving system |
KR100840933B1 (ko) * | 2002-01-31 | 2008-06-24 | 삼성전자주식회사 | 램프 구동 장치 및 이를 갖는 액정 표시 장치 |
-
2002
- 2002-11-20 KR KR1020020072490A patent/KR100897508B1/ko not_active Expired - Fee Related
-
2003
- 2003-11-17 US US10/715,169 patent/US7456819B2/en not_active Expired - Fee Related
- 2003-11-18 TW TW092132278A patent/TW200500701A/zh unknown
- 2003-11-20 CN CNB2003101248701A patent/CN100378540C/zh not_active Expired - Fee Related
- 2003-11-20 JP JP2003390170A patent/JP2004311396A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5615093A (en) * | 1994-08-05 | 1997-03-25 | Linfinity Microelectronics | Current synchronous zero voltage switching resonant topology |
CN1144341A (zh) * | 1994-10-28 | 1997-03-05 | 三星电子株式会社 | Lcd的背景照明电路 |
US5930126A (en) * | 1996-03-26 | 1999-07-27 | The Genlyte Group Incorporated | Ballast shut-down circuit responsive to an unbalanced load condition in a single lamp ballast or in either lamp of a two-lamp ballast |
CN1368789A (zh) * | 1999-11-09 | 2002-09-11 | 凹凸科技国际股份有限公司 | 高效率可适型直流/交流转换器 |
US20020003525A1 (en) * | 2000-07-06 | 2002-01-10 | Hwang Beom Young | Driving circuit for LCD backlight |
US20020075223A1 (en) * | 2000-12-18 | 2002-06-20 | Jason Chen | Back lighting source module for liquid crystal display |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009129650A1 (zh) * | 2008-04-22 | 2009-10-29 | 光远科技股份有限公司 | 液晶显示器led背光装置的衰减补偿方法和液晶显示器 |
Also Published As
Publication number | Publication date |
---|---|
CN1515940A (zh) | 2004-07-28 |
KR20040044000A (ko) | 2004-05-27 |
US20040100438A1 (en) | 2004-05-27 |
US7456819B2 (en) | 2008-11-25 |
JP2004311396A (ja) | 2004-11-04 |
TW200500701A (en) | 2005-01-01 |
KR100897508B1 (ko) | 2009-05-15 |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: SAMSUNG MONITOR CO., LTD. Free format text: FORMER OWNER: SAMSUNG ELECTRONICS CO., LTD. Effective date: 20121026 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20121026 Address after: Gyeonggi Do, South Korea Patentee after: Samsung Display Co., Ltd. Address before: Gyeonggi Do, South Korea Patentee before: Samsung Electronics Co., Ltd. |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20151120 |