KR101228922B1 - 엘이디 휘도 보상용 신호 연산 증폭 회로 - Google Patents
엘이디 휘도 보상용 신호 연산 증폭 회로 Download PDFInfo
- Publication number
- KR101228922B1 KR101228922B1 KR1020060041466A KR20060041466A KR101228922B1 KR 101228922 B1 KR101228922 B1 KR 101228922B1 KR 1020060041466 A KR1020060041466 A KR 1020060041466A KR 20060041466 A KR20060041466 A KR 20060041466A KR 101228922 B1 KR101228922 B1 KR 101228922B1
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- KR
- South Korea
- Prior art keywords
- rail
- led
- temperature
- signal
- output
- 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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- 230000003321 amplification Effects 0.000 title description 4
- 238000003199 nucleic acid amplification method Methods 0.000 title description 4
- 238000005259 measurement Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- 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
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- 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
- G02F1/133603—Direct backlight with LEDs
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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
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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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/234—Indexing scheme relating to amplifiers the input amplifying stage being one or more operational amplifiers
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (4)
- 엘이디를 채용한 LCD용 백라이트 유닛에서, 엘이디의 온도를 측정하여 출력하기 위한 온도센서와;상기 온도센서로부터 출력된 온도에 따른 신호를 소정의 레벨로 증폭하여 정확한 디지털 레벨 신호를 출력하기 위한 레일-투-레일 연산 증폭기와;상기 레일-투-레일 연산 증폭기로부터 출력된 증폭 신호를 입력받아 소정의 신호 보상을 실시하여 엘이디 온도 상승에 따라 엘이디의 휘도가 떨어지는 것을 방지하는 마이크로 컨트롤러를 포함하며,상기 레일-투-레일 연산 증폭기는 제1 입력단자로 입력전압을 입력받고, 제2 입력단자로 온도센서의 측정온도를 입력받아 소정레벨로 증폭하여 출력단자로 출력 전압을 출력하되, 온도센서의 온도가 1도씨 변할 때, 상기 레일-투-레일 연산 증폭기의 출력 전압이 최소 5V 이상이 출력되도록 하는 것을 특징으로 하는 엘이디 휘도 보상용 신호 연산 증폭 회로.
- 삭제
- 삭제
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060041466A KR101228922B1 (ko) | 2006-05-09 | 2006-05-09 | 엘이디 휘도 보상용 신호 연산 증폭 회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060041466A KR101228922B1 (ko) | 2006-05-09 | 2006-05-09 | 엘이디 휘도 보상용 신호 연산 증폭 회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20070109027A KR20070109027A (ko) | 2007-11-15 |
KR101228922B1 true KR101228922B1 (ko) | 2013-02-01 |
Family
ID=39063594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020060041466A Active KR101228922B1 (ko) | 2006-05-09 | 2006-05-09 | 엘이디 휘도 보상용 신호 연산 증폭 회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101228922B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10460678B2 (en) | 2016-11-23 | 2019-10-29 | Samsung Display Co., Ltd. | Display device and method of driving the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002111120A (ja) * | 2000-09-28 | 2002-04-12 | Toshiba Electronic Engineering Corp | 光送信モジュール |
US20020130786A1 (en) * | 2001-01-16 | 2002-09-19 | Visteon Global Technologies,Inc. | Series led backlight control circuit |
JP3389653B2 (ja) | 1993-10-22 | 2003-03-24 | 三菱化学株式会社 | 有機電界発光パネル |
KR20040085304A (ko) * | 2003-03-31 | 2004-10-08 | 비오이 하이디스 테크놀로지 주식회사 | Led 백라이트용 구동 장치 |
-
2006
- 2006-05-09 KR KR1020060041466A patent/KR101228922B1/ko active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3389653B2 (ja) | 1993-10-22 | 2003-03-24 | 三菱化学株式会社 | 有機電界発光パネル |
JP2002111120A (ja) * | 2000-09-28 | 2002-04-12 | Toshiba Electronic Engineering Corp | 光送信モジュール |
US20020130786A1 (en) * | 2001-01-16 | 2002-09-19 | Visteon Global Technologies,Inc. | Series led backlight control circuit |
KR20040085304A (ko) * | 2003-03-31 | 2004-10-08 | 비오이 하이디스 테크놀로지 주식회사 | Led 백라이트용 구동 장치 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10460678B2 (en) | 2016-11-23 | 2019-10-29 | Samsung Display Co., Ltd. | Display device and method of driving the same |
Also Published As
Publication number | Publication date |
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KR20070109027A (ko) | 2007-11-15 |
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