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IT1219550B - ELECTRO-OPTIC MODULATOR, IN PARTICULAR LIQUID CRYSTAL DEVICE BASED ON THE EFFECT OF THE SUPER-TORSION TWO-REFERENCE - Google Patents

ELECTRO-OPTIC MODULATOR, IN PARTICULAR LIQUID CRYSTAL DEVICE BASED ON THE EFFECT OF THE SUPER-TORSION TWO-REFERENCE

Info

Publication number
IT1219550B
IT1219550B IT47882/88A IT4788288A IT1219550B IT 1219550 B IT1219550 B IT 1219550B IT 47882/88 A IT47882/88 A IT 47882/88A IT 4788288 A IT4788288 A IT 4788288A IT 1219550 B IT1219550 B IT 1219550B
Authority
IT
Italy
Prior art keywords
torsion
electro
super
liquid crystal
effect
Prior art date
Application number
IT47882/88A
Other languages
Italian (it)
Other versions
IT8847882A0 (en
Inventor
Yokoyama Kozo
Original Assignee
Seiko Instr Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP10047487A external-priority patent/JPS63265227A/en
Priority claimed from JP10047287A external-priority patent/JPS63265225A/en
Priority claimed from JP10047387A external-priority patent/JPS63265226A/en
Application filed by Seiko Instr Inc filed Critical Seiko Instr Inc
Publication of IT8847882A0 publication Critical patent/IT8847882A0/en
Application granted granted Critical
Publication of IT1219550B publication Critical patent/IT1219550B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • H04N3/127—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays using liquid crystals
    • 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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3692—Details of drivers for data electrodes suitable for passive matrices only
    • 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
    • G09G3/36—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 liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
IT47882/88A 1987-04-23 1988-04-21 ELECTRO-OPTIC MODULATOR, IN PARTICULAR LIQUID CRYSTAL DEVICE BASED ON THE EFFECT OF THE SUPER-TORSION TWO-REFERENCE IT1219550B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10047487A JPS63265227A (en) 1987-04-23 1987-04-23 Optical modulator
JP10047287A JPS63265225A (en) 1987-04-23 1987-04-23 Optical modulator
JP10047387A JPS63265226A (en) 1987-04-23 1987-04-23 Optical modulator

Publications (2)

Publication Number Publication Date
IT8847882A0 IT8847882A0 (en) 1988-04-21
IT1219550B true IT1219550B (en) 1990-05-18

Family

ID=27309229

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47882/88A IT1219550B (en) 1987-04-23 1988-04-21 ELECTRO-OPTIC MODULATOR, IN PARTICULAR LIQUID CRYSTAL DEVICE BASED ON THE EFFECT OF THE SUPER-TORSION TWO-REFERENCE

Country Status (3)

Country Link
FR (1) FR2614437B1 (en)
GB (1) GB2204174B (en)
IT (1) IT1219550B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2644001B1 (en) * 1989-03-03 1992-12-18 Centaure Sa IMAGE VIEWING SYSTEM
US5185602A (en) * 1989-04-10 1993-02-09 Cirrus Logic, Inc. Method and apparatus for producing perception of high quality grayscale shading on digitally commanded displays
DE3930259A1 (en) * 1989-09-11 1991-03-21 Thomson Brandt Gmbh CONTROL CIRCUIT FOR A LIQUID CRYSTAL DISPLAY
JP2642204B2 (en) * 1989-12-14 1997-08-20 シャープ株式会社 Drive circuit for liquid crystal display
FR2656757B1 (en) * 1989-12-28 1992-03-20 Thomson Consumer Electronics METHOD FOR ADDRESSING EACH COLUMN OF A MATRIX TYPE LCD SCREEN.
US5485173A (en) * 1991-04-01 1996-01-16 In Focus Systems, Inc. LCD addressing system and method
WO1993013513A1 (en) * 1991-12-24 1993-07-08 Cirrus Logic, Inc. Process for producing shaded images on display screens
US5751265A (en) * 1991-12-24 1998-05-12 Cirrus Logic, Inc. Apparatus and method for producing shaded images on display screens
JPH0876711A (en) * 1994-09-02 1996-03-22 Mitsubishi Electric Corp Display device
EP0838800A1 (en) * 1996-10-24 1998-04-29 Motorola, Inc. Nonlinear gray scale method and apparatus
US6211859B1 (en) 1997-03-10 2001-04-03 Chips & Technologies, Llc Method for reducing pulsing on liquid crystal displays
US6034663A (en) * 1997-03-10 2000-03-07 Chips & Technologies, Llc Method for providing grey scale images to the visible limit on liquid crystal displays
WO1999021159A1 (en) * 1997-10-17 1999-04-29 Motorola Inc. Method for controlling brightness in a flat panel display
JP3073486B2 (en) * 1998-02-16 2000-08-07 キヤノン株式会社 Image forming apparatus, electron beam apparatus, modulation circuit, and driving method of image forming apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117287A (en) * 1980-02-21 1981-09-14 Sharp Kk Indicator driving system
JPS5927687A (en) * 1982-08-04 1984-02-14 Casio Comput Co Ltd pocketable television receiver
IN161652B (en) * 1983-07-12 1988-01-09 Bbc Brown Boveri & Cie
CA1239468A (en) * 1984-01-13 1988-07-19 Yuji Watanabe Video display system

Also Published As

Publication number Publication date
FR2614437B1 (en) 1993-10-15
GB2204174B (en) 1991-03-13
GB8809416D0 (en) 1988-05-25
GB2204174A (en) 1988-11-02
FR2614437A1 (en) 1988-10-28
IT8847882A0 (en) 1988-04-21

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970429