KR100689158B1 - 디지털 마이크로기계 장치의 아날로그 펄스 폭 변조 셀 - Google Patents
디지털 마이크로기계 장치의 아날로그 펄스 폭 변조 셀 Download PDFInfo
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- KR100689158B1 KR100689158B1 KR1020000086647A KR20000086647A KR100689158B1 KR 100689158 B1 KR100689158 B1 KR 100689158B1 KR 1020000086647 A KR1020000086647 A KR 1020000086647A KR 20000086647 A KR20000086647 A KR 20000086647A KR 100689158 B1 KR100689158 B1 KR 100689158B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
- B81B7/00—Microstructural systems; Auxiliary parts of microstructural devices or systems
- B81B7/04—Networks or arrays of similar microstructural devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
- G02B26/0841—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD the reflecting element being moved or deformed by electrostatic means
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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
- G09G3/3433—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 using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/346—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 using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on modulation of the reflection angle, e.g. micromirrors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
- H04N5/7458—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of deformable mirrors, e.g. digital micromirror device [DMD]
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0852—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory with more than one capacitor
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0235—Field-sequential colour display
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0259—Details of the generation of driving signals with use of an analog or digital ramp generator in the column driver or in the pixel circuit
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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
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
- G09G2310/061—Details of flat display driving waveforms for resetting or blanking
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
- H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
- H04N5/7458—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of deformable mirrors, e.g. digital micromirror device [DMD]
- H04N2005/7466—Control circuits therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Facsimile Heads (AREA)
Abstract
Description
특허번호 | 출원일 | 발행일 | 제목 |
5,061,049 | 1990.9.13 | 1991.10.29 | Spatial Light Modulation and Method |
5,583,688 | 1003.12.21 | 1006.12.10 | Multi-Level Digital Micromirror Device |
4,615,595 | 1984.10.10 | 1986.10.7 | Frame Addressed Spatial Light Modulator |
6,147,790 | 1999.5.13 | 2000.11.14 | Spring-Ring Micromechanical Device |
60/173,859 | 1999.12.30 | Color Wheel For A Falling Raster Scan |
본 발명은 마이크로기계 장치 분야에 관한 것으로, 특히 쌍안정 마이크로미러(micromirror) 장치를 사용하여 화상 데이터의 아날로그 펄스 폭 변조를 수행할 수 있는 공간적 광 변조기 설계에 관한 것이다.
아날로그 펄스 폭 변조를 사용하여 디지털 마이크로미러 어레이를 동작시킴으로써 저가의 디스플레이 시스템을 가능하게 하는 새로운 변조 기술과 마이크로미러 설계가 개발되어 왔다. 새로운 마이크로미러 설계와 동작 방법은 디지털 PWM에 의해 생성되는 많은 화상 가공물들을 생성하지 않기 때문에, 디지털 PWM 디스플레이 시스템에 사용되는 프로세싱 하드웨어는 가공물들을 개선시킬 필요가 없게 한다. 개시된 마이크로미러 설계는 거의 추가 회로를 필요로 하지 않는 디감마(degamma) 동작을 수행하는 방법을 제공한다.
Claims (7)
- 어드레스 회로 및 편향가능 미러 소자(deflectable mirror element)로 구성되는 적어도 하나의 셀을 포함하는 쌍안정 마이크로미러 어레이(bistable micromirror array)를 동작시키는 방법으로서,상기 각 셀 내의 상기 어드레스 회로에, 상기 편향가능 미러 소자의 원하는 통합된 위치를 나타내는 데이터 신호를 제공하는 단계;상기 각 셀 내의 상기 어드레스 회로에 램프 신호(ramp signal)를 제공하는 단계;상기 데이터 신호와 상기 램프 신호 사이의 차이에 따라 미러 어드레스 신호를 발생하는 단계; 및상기 어드레스 회로에 바이어스 신호를 제공하는 단계를 포함하고,상기 미러 어드레스 신호는 상기 차이가 소정의 임계값을 초과할 때 제1 상태를 가지고, 상기 차이가 상기 소정의 임계값을 초과하지 않을 때 제2 상태를 가지며,상기 바이어스 신호는 상기 어드레스 신호가 상기 제1 상태에 있을 때는 상기 미러 소자를 제1 위치로 편향시키고, 상기 어드레스 신호가 상기 제2 상태에 있을 때는 제2 위치로 편향시키는 방법.
- 제1항에 있어서,상기 어드레스 회로에 데이터 신호를 제공하는 단계는, 아날로그 입력 전압을 나타내는 전하를 커패시터 상에 저장하는 단계를 더 포함하는 방법.
- 제1항에 있어서,상기 어드레스 회로에 데이터 신호를 제공하는 단계는, 각 비디오 프레임에 한번씩 아날로그 입력 전압을 나타내는 전하를 상기 어레이의 각 셀의 커패시터 상에 저장하는 단계를 더 포함하는 방법.
- 제1항에 있어서,상기 어드레스 회로에 데이터 신호를 제공하는 단계는, 각 비디오 필드에 한번씩 커패시터 상의 아날로그 입력 전압을 나타내는 전하를 상기 어레이의 교호하는 열(row)들의 각 셀에 저장하는 단계를 더 포함하는 방법.
- 제1항에 있어서,상기 어드레스 회로에 데이터 신호를 제공하는 단계는,아날로그 입력 전압을 나타내는 전하를 제1 커패시터 상에 저장하는 단계; 및프레임 신호의 활성화시 제2 커패시터에 상기 전하의 일부를 전달하는 단계를 더 포함하는 방법.
- 제5항에 있어서,상기 전달 단계는 각 비디오 프레임에 한번씩 발생하는 방법.
- 제5항에 있어서,상기 전달 단계는 각 비디오 필드에 한번씩 발생하는 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17394199P | 1999-12-30 | 1999-12-30 | |
US60/173,941 | 1999-12-30 |
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Publication Number | Publication Date |
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KR20010070383A KR20010070383A (ko) | 2001-07-25 |
KR100689158B1 true KR100689158B1 (ko) | 2007-03-08 |
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KR1020000086647A KR100689158B1 (ko) | 1999-12-30 | 2000-12-30 | 디지털 마이크로기계 장치의 아날로그 펄스 폭 변조 셀 |
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US (1) | US6466358B2 (ko) |
JP (1) | JP2001249287A (ko) |
KR (1) | KR100689158B1 (ko) |
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JP2001249287A (ja) | 2001-09-14 |
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US6466358B2 (en) | 2002-10-15 |
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