KR200303946Y1 - 멀티램프 액정 디스플레이용 제어회로 - Google Patents
멀티램프 액정 디스플레이용 제어회로 Download PDFInfo
- Publication number
- KR200303946Y1 KR200303946Y1 KR20-2002-0033770U KR20020033770U KR200303946Y1 KR 200303946 Y1 KR200303946 Y1 KR 200303946Y1 KR 20020033770 U KR20020033770 U KR 20020033770U KR 200303946 Y1 KR200303946 Y1 KR 200303946Y1
- Authority
- KR
- South Korea
- Prior art keywords
- lamp
- lamps
- control circuit
- transformers
- current
- 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
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal Display Device Control (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims (5)
- 구동회로, 복수의 승압 변압기, 평형 변압기, 램프 부하, 펄스폭변조(PWM) 제어회로, 램프전류 검출회로 및 복수의 램프를 포함하는 멀티램프 액정 디스플레이용 제어회로에 있어서,상기 승압 변압기들의 입력은 서로 연결되고, 상기 승압 변압기들의 고전압출력은 각각 상기 램프 부하에 연결되며, 상기 승압 변압기들의 접지는 상기 평형 변압기의 입력에 연결되고, 상기 램프 부하의 피드백은 상기 램프전류 검출회로에 연결되어 램프들 중 하나의 전류를 검출함으로써 모든 램프를 제어하는 것을 특징으로 하는 멀티램프 액정 디스플레이용 제어회로.
- 제1항에 있어서,상기 평형 변압기는 1:1의 순환비를 가지는 것을 특징으로 하는 멀티램프 액정 디스플레이용 제어회로.
- 제1항에 있어서,N개의 램프가 직렬로 연결되고 1:1의 순환비를 가지는 N-1개의 변압기가 직렬로 연결되어 각각의 램프를 지나는 전류가 동일하게 하는 것을 특징으로 하는 멀티램프 액정 디스플레이용 제어회로.
- 제1항에 있어서,적어도 1세트의 변압기의 주 단자는 1:1의 순환비를 가진 평형 변압기(104)에 접지가 연결되는 방식으로 직렬로 연결되어, 1:1의 순환비를 가진 상기 하나의 평형 변압기를 통해 서로 연결된 상기 변압기가 동시에 모든 램프를 구동하는 것을 특징으로 하는 멀티램프 액정 디스플레이용 제어회로.
- 제1항에 있어서,상기 램프들의 출력 모두는 단자를 통해 램프전류 검출회로에 연결되어 있어서, 상기 램프가 PWM 네거티브 피드백모드 제어회로의 세트의 제어하에 동일한 밝기로 빛을 조사하는 것을 특징으로 하는 멀티램프 액정 디스플레이용 제어회로.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2002-0033770U KR200303946Y1 (ko) | 2002-11-12 | 2002-11-12 | 멀티램프 액정 디스플레이용 제어회로 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2002-0033770U KR200303946Y1 (ko) | 2002-11-12 | 2002-11-12 | 멀티램프 액정 디스플레이용 제어회로 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR200303946Y1 true KR200303946Y1 (ko) | 2003-02-12 |
Family
ID=49330653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20-2002-0033770U Expired - Fee Related KR200303946Y1 (ko) | 2002-11-12 | 2002-11-12 | 멀티램프 액정 디스플레이용 제어회로 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200303946Y1 (ko) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100714632B1 (ko) | 2006-07-03 | 2007-05-07 | 삼성전기주식회사 | 전류평형 기능을 갖는 엘시디용 백라이트 장치 |
| KR100738013B1 (ko) | 2006-01-09 | 2007-07-12 | 타이페이 멀티파워 일렉트로닉스 코포레이션 리미티드 | 전류평형장치 |
| KR100782665B1 (ko) | 2006-11-29 | 2007-12-07 | 리엔 창 일렉트로닉 엔터프라이즈 컴퍼니 리미티드 | 램프용 전류 밸런싱 장치 |
| KR100785151B1 (ko) | 2005-06-24 | 2007-12-11 | 혼하이 프리시젼 인더스트리 컴퍼니 리미티드 | 광원구동장치 |
| KR100856201B1 (ko) | 2005-08-26 | 2008-09-03 | 혼하이 프리시젼 인더스트리 컴퍼니 리미티드 | 다수의 램프를 구동시키기 위한 장치 및 방법 |
-
2002
- 2002-11-12 KR KR20-2002-0033770U patent/KR200303946Y1/ko not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100785151B1 (ko) | 2005-06-24 | 2007-12-11 | 혼하이 프리시젼 인더스트리 컴퍼니 리미티드 | 광원구동장치 |
| KR100856201B1 (ko) | 2005-08-26 | 2008-09-03 | 혼하이 프리시젼 인더스트리 컴퍼니 리미티드 | 다수의 램프를 구동시키기 위한 장치 및 방법 |
| KR100738013B1 (ko) | 2006-01-09 | 2007-07-12 | 타이페이 멀티파워 일렉트로닉스 코포레이션 리미티드 | 전류평형장치 |
| KR100714632B1 (ko) | 2006-07-03 | 2007-05-07 | 삼성전기주식회사 | 전류평형 기능을 갖는 엘시디용 백라이트 장치 |
| KR100782665B1 (ko) | 2006-11-29 | 2007-12-07 | 리엔 창 일렉트로닉 엔터프라이즈 컴퍼니 리미티드 | 램프용 전류 밸런싱 장치 |
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