KR20030018150A - 인버터의 디밍회로 - Google Patents
인버터의 디밍회로 Download PDFInfo
- Publication number
- KR20030018150A KR20030018150A KR1020010051722A KR20010051722A KR20030018150A KR 20030018150 A KR20030018150 A KR 20030018150A KR 1020010051722 A KR1020010051722 A KR 1020010051722A KR 20010051722 A KR20010051722 A KR 20010051722A KR 20030018150 A KR20030018150 A KR 20030018150A
- Authority
- KR
- South Korea
- Prior art keywords
- circuit
- dimming
- comparator
- input
- terminal
- Prior art date
Links
- 230000010355 oscillation Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 3
Classifications
-
- 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
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
-
- 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
-
- 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
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)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
Description
Claims (2)
- PWM 제어회로와, 스위칭회로와, 발진회로와, 승압용 트랜스포머와, 냉음극관과, 보호회로와, 검출회로와, 디밍회로와, 가산기를 포함하는 인버터에 있어서,상기 디밍회로는,외부로부터 입력되는 디밍 입력 전압을 일정 레벨 강하시켜 리니어 디밍 전압을 상기 가산기로 출력하는 리니어 디밍회로와,삼각파 신호를 출력하는 삼각파 발생회로와,상기 리니어 디밍회로와 상기 가산기로 연결되는 선로상에 어느 하나의 입력단이 연결되고, 상기 삼각파 발생회로의 출력측에 다른 하나의 입력단에 연결되며, 상기 가산기의 일단에 출력단이 연결되어, 외부로부터 입력되는 제어 신호에 따라 동작되어 각각 입력되는 신호를 비교하여 비교값을 상기 가산기로 출력하는 제 1비교기와,디밍 입력 전압을 출력하는 디밍 입력단에 어느 하나의 입력단에 연결되고, 그라운드에 다른 하나의 입력단이 연결되며, 상기 제 1비교기의 제어단에 출력단이 연결되어, 외부로부터 입력되는 디밍 입력 전압의 크기를 기준 전압과 비교하여 디밍 전압이 기준 전압보다 크면 제어 신호를 상기 제 1비교기로 출력하여 상기 제 1비교기를 동작시키는 제 2비교기와,상기 제 2비교기의 출력단과 상기 제 1비교기의 제어단 사이에 연결되어 상기 제 2비교기의 출력 신호에 따라 스위칭되어 상기 제 1비교기를 동작시키는 전원스위칭회로를 포함하는 것을 특징으로 하는 인버터의 디밍회로.
- 제 1 항에 있어서,상기 전원 스위칭회로는,상기 제 2비교기의 출력단에 베이스가 연결되고, 정전압단에 에미터가 연결되고, 상기 제 1비교기의 제어단에 컬렉터가 연결되는 트랜지스터임을 특징으로 하는 인버터의 디밍회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010051722A KR100594889B1 (ko) | 2001-08-27 | 2001-08-27 | 인버터의 디밍회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010051722A KR100594889B1 (ko) | 2001-08-27 | 2001-08-27 | 인버터의 디밍회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030018150A true KR20030018150A (ko) | 2003-03-06 |
KR100594889B1 KR100594889B1 (ko) | 2006-07-03 |
Family
ID=27720966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020010051722A KR100594889B1 (ko) | 2001-08-27 | 2001-08-27 | 인버터의 디밍회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100594889B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100674256B1 (ko) * | 2003-11-17 | 2007-01-25 | 혼하이 프리시젼 인더스트리 컴퍼니 리미티드 | 디밍 제어 방법 및 이를 이용하는 조명 시스템 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1251558C (zh) * | 2000-05-12 | 2006-04-12 | O2米克罗国际有限公司 | 用于灯具加热和减光控制的集成电路 |
KR100359938B1 (ko) * | 2000-07-25 | 2002-11-07 | 삼성전기주식회사 | 인버터의 디밍 제어 회로 |
KR200211545Y1 (ko) * | 2000-09-04 | 2001-01-15 | 강웅현 | 액정표시기 백 라이트 인버터 구동 장치 |
KR100375513B1 (ko) * | 2000-11-28 | 2003-03-10 | 삼성전기주식회사 | 엘시디의 백라이트용 인버터 |
-
2001
- 2001-08-27 KR KR1020010051722A patent/KR100594889B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100674256B1 (ko) * | 2003-11-17 | 2007-01-25 | 혼하이 프리시젼 인더스트리 컴퍼니 리미티드 | 디밍 제어 방법 및 이를 이용하는 조명 시스템 |
Also Published As
Publication number | Publication date |
---|---|
KR100594889B1 (ko) | 2006-07-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1209955B1 (en) | Liquid crystal display back-lighting circuit | |
JP4249900B2 (ja) | 液晶ディスプレイ装置のバックライトのランプを減光する方法と装置 | |
US6876158B2 (en) | Electronic ballast with full bridge circuit | |
KR100402091B1 (ko) | 압전형 트랜스포머를 이용한 백라이트 구동 회로 | |
JP2002056996A (ja) | 液晶バックライト調光方式 | |
KR100594889B1 (ko) | 인버터의 디밍회로 | |
JP3076184B2 (ja) | 液晶表示装置 | |
US6084361A (en) | Discharge lamp operating circuit with on time control of switching transistor | |
KR100359938B1 (ko) | 인버터의 디밍 제어 회로 | |
KR200303946Y1 (ko) | 멀티램프 액정 디스플레이용 제어회로 | |
JP2002100496A (ja) | 平面ランプの調光装置 | |
JP4103170B2 (ja) | 放電管点灯装置 | |
KR100334754B1 (ko) | 냉음극 형광등용 인버터 | |
KR102733657B1 (ko) | 조명 장치의 스위칭, 페이드인, 페이드아웃, 및 디밍을 제어하는 회로 및 그 방법 | |
KR100302679B1 (ko) | 압전 인버터 구동회로 | |
KR100528698B1 (ko) | 램프의 구동장치 및 구동방법 | |
JP2002124395A (ja) | 放電管調光制御装置及びその方法 | |
JP2009294294A (ja) | 液晶表示装置 | |
JPH10162988A (ja) | 照明装置 | |
JP3306904B2 (ja) | 放電灯点灯装置 | |
KR20040032304A (ko) | 복합디밍제어방식의 냉음극형광램프용 인버터 | |
KR100320235B1 (ko) | 전자식 안정기의 소프트스탑제어방법 | |
JPH07272888A (ja) | 背面照光装置 | |
KR20070005219A (ko) | 액정표시장치 | |
JP2001357995A (ja) | 調光制御装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 20010827 |
|
PG1501 | Laying open of application | ||
A201 | Request for examination | ||
PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 20040817 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 20010827 Comment text: Patent Application |
|
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 20060620 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 20060622 Patent event code: PR07011E01D |
|
PR1002 | Payment of registration fee |
Payment date: 20060623 End annual number: 3 Start annual number: 1 |
|
PG1601 | Publication of registration | ||
PR1001 | Payment of annual fee |
Payment date: 20090602 Start annual number: 4 End annual number: 4 |
|
FPAY | Annual fee payment |
Payment date: 20100430 Year of fee payment: 5 |
|
PR1001 | Payment of annual fee |
Payment date: 20100430 Start annual number: 5 End annual number: 5 |
|
LAPS | Lapse due to unpaid annual fee | ||
PC1903 | Unpaid annual fee |