EP1324307A3 - Circuit for the voltage supply of a liquid crystal display device - Google Patents

Circuit for the voltage supply of a liquid crystal display device Download PDF

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Publication number
EP1324307A3
EP1324307A3 EP02102806A EP02102806A EP1324307A3 EP 1324307 A3 EP1324307 A3 EP 1324307A3 EP 02102806 A EP02102806 A EP 02102806A EP 02102806 A EP02102806 A EP 02102806A EP 1324307 A3 EP1324307 A3 EP 1324307A3
Authority
EP
European Patent Office
Prior art keywords
voltage
liquid crystal
crystal display
display device
circuit
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.)
Withdrawn
Application number
EP02102806A
Other languages
German (de)
French (fr)
Other versions
EP1324307A2 (en
Inventor
Wolfgang c/o Philips Int. Fallot-Burghardt
Harald c/o Philips Int. Property & Hohenwarter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NXP BV
Original Assignee
Philips Intellectual Property and Standards GmbH
Koninklijke Philips Electronics NV
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
Application filed by Philips Intellectual Property and Standards GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP1324307A2 publication Critical patent/EP1324307A2/en
Publication of EP1324307A3 publication Critical patent/EP1324307A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display

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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

Die Schaltungsanordnung dient der Spannungsversorgung der Zeilen- und Spaltentreiber einer Flüssigkristallanzeigevorrichtung. Sie beinhaltet einen Spannungsteiler (1) mit einer Vielzahl von in Serie geschalteten Widerständen (R1-R5) und mit zwischen den Widerständen (R1-R5) angeordneten Spannungsabgriffen (22-25) zum Abgreifen unterschiedlicher Spannungspegel (V2-V5). Ein einziger (25) der Spannungsabgriffe (22-25) ist mit Mitteln (3) zur Feineinstellung des dort abgegriffenen Spannungspegels (V5) ausgestattet. Durch einmalige individuelle Kalibrierung eines jeden Exemplars der Schaltungsanordnung kann der eine Spannungspegel (V5) derart fein eingestellt wcrden, dass ein durch asymmetrische Spannungspegel verursachtes Übersprechen, d. h. gegenseitige Wechselwirkung von Bildpunktinhalten, vermindert wird. Die Vorteile der Schaltungsanordnung kommen besonders zu Geltung, wenn sie in Flüssigkristallanzeigevorrichtungen mit Graustufenanzeige oder Farbanzeige eingesetzt wird.

Figure imgaf001
The circuit arrangement serves to supply power to the row and column drivers of a liquid crystal display device. It includes a voltage divider (1) having a plurality of series connected resistors (R1-R5) and voltage taps (22-25) disposed between the resistors (R1-R5) for tapping different voltage levels (V2-V5). A single (25) of the voltage taps (22-25) is equipped with means (3) for finely adjusting the voltage level (V5) tapped there. By once individually calibrating each copy of the circuitry, the one voltage level (V5) may be adjusted to be fine to reduce crosstalk caused by asymmetric voltage levels, ie, mutual interaction of pixel contents. The advantages of the circuit arrangement are particularly useful when used in grayscale display or color display liquid crystal display devices.
Figure imgaf001
EP02102806A 2001-12-20 2002-12-18 Circuit for the voltage supply of a liquid crystal display device Withdrawn EP1324307A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10162766A DE10162766A1 (en) 2001-12-20 2001-12-20 Circuit arrangement for the voltage supply of a liquid crystal display device
DE10162766 2001-12-20

Publications (2)

Publication Number Publication Date
EP1324307A2 EP1324307A2 (en) 2003-07-02
EP1324307A3 true EP1324307A3 (en) 2007-02-21

Family

ID=7710046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02102806A Withdrawn EP1324307A3 (en) 2001-12-20 2002-12-18 Circuit for the voltage supply of a liquid crystal display device

Country Status (6)

Country Link
US (1) US7038646B2 (en)
EP (1) EP1324307A3 (en)
JP (1) JP2003263138A (en)
KR (1) KR100946812B1 (en)
CN (1) CN100347737C (en)
DE (1) DE10162766A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4062256B2 (en) 2004-01-05 2008-03-19 セイコーエプソン株式会社 Display driver and electronic device including display driver
US7436401B2 (en) * 2004-02-12 2008-10-14 Leslie Louis Szepesi Calibration of a voltage driven array
US20080062111A1 (en) * 2006-09-13 2008-03-13 Himax Technologies Limited Apparatus for Driving a Display
US7773104B2 (en) * 2006-09-13 2010-08-10 Himax Technologies Limited Apparatus for driving a display and gamma voltage generation circuit thereof
US8094109B2 (en) * 2006-11-02 2012-01-10 Renesas Electronics Corporation Data driver with multilevel voltage generating circuit, and liquid crystal display apparatus including layout pattern of resistor string of the multilevel generating circuit
US8994757B2 (en) 2007-03-15 2015-03-31 Scalable Display Technologies, Inc. System and method for providing improved display quality by display adjustment and image processing using optical feedback
CN107705746A (en) * 2017-10-24 2018-02-16 惠科股份有限公司 The drive device and driving method of a kind of display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0384229A1 (en) * 1989-02-23 1990-08-29 Seiko Epson Corporation Liquid crystal display unit
EP0514033A2 (en) * 1991-05-15 1992-11-19 International Business Machines Corporation Liquid crystal display
US5179371A (en) * 1987-08-13 1993-01-12 Seiko Epson Corporation Liquid crystal display device for reducing unevenness of display
EP0762376A2 (en) * 1995-08-09 1997-03-12 Sanyo Electric Co. Ltd Drive circuit for a liquid crystal display device

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7406729A (en) * 1974-05-20 1975-11-24 Philips Nv DEVICE FOR CONTROLLING OR POWERING A DISPLAY DEVICE.
GB1602898A (en) * 1977-04-26 1981-11-18 Suwa Seikosha Kk Circuit for detecting a voltage
DE3071642D1 (en) * 1979-12-19 1986-07-24 Seiko Epson Corp A voltage regulator for a liquid crystal display
US4845462A (en) * 1987-07-10 1989-07-04 U.S. Philips Corporation Linear integrated resistor
JPS6468961A (en) * 1987-09-09 1989-03-15 Ricoh Kk Resistance element for semiconductor integrated circuit device
JPH02201423A (en) * 1989-01-31 1990-08-09 Seiko Epson Corp Liquid crystal display device
JP2951352B2 (en) * 1990-03-08 1999-09-20 株式会社日立製作所 Multi-tone liquid crystal display
US5828354A (en) * 1990-07-13 1998-10-27 Citizen Watch Co., Ltd. Electrooptical display device
US5610627A (en) * 1990-08-10 1997-03-11 Sharp Kabushiki Kaisha Clocking method and apparatus for display device with calculation operation
JPH0583660A (en) * 1991-09-24 1993-04-02 Toshiba Corp Automatic adjustment circuit for electronic equipment
JPH0756538A (en) * 1993-08-20 1995-03-03 Hitachi Ltd Driving method for matrix type display device
JP3106078B2 (en) * 1994-12-28 2000-11-06 シャープ株式会社 LCD drive power supply
JPH08263019A (en) * 1995-03-20 1996-10-11 Casio Comput Co Ltd Color liquid crystal display device
JPH0950003A (en) * 1995-08-09 1997-02-18 Sanyo Electric Co Ltd Liquid crystal display device
JP3554135B2 (en) * 1997-04-24 2004-08-18 ローム株式会社 LCD driver
JPH11175027A (en) * 1997-12-08 1999-07-02 Hitachi Ltd Liquid crystal driving circuit and liquid crystal display device
JP3687359B2 (en) * 1998-09-07 2005-08-24 セイコーエプソン株式会社 Drive control device and electro-optical device
ATE374384T1 (en) * 1999-01-08 2007-10-15 Seiko Epson Corp LCD DEVICE, ELECTRONIC DEVICE AND POWER SUPPLY FOR DRIVING THE LCD
JP2001274676A (en) * 2000-01-19 2001-10-05 Sharp Corp Level shift circuit and image display device
JP2002175060A (en) * 2000-09-28 2002-06-21 Sharp Corp Liquid crystal drive device and liquid crystal display device provided with the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179371A (en) * 1987-08-13 1993-01-12 Seiko Epson Corporation Liquid crystal display device for reducing unevenness of display
EP0384229A1 (en) * 1989-02-23 1990-08-29 Seiko Epson Corporation Liquid crystal display unit
EP0514033A2 (en) * 1991-05-15 1992-11-19 International Business Machines Corporation Liquid crystal display
EP0762376A2 (en) * 1995-08-09 1997-03-12 Sanyo Electric Co. Ltd Drive circuit for a liquid crystal display device

Also Published As

Publication number Publication date
JP2003263138A (en) 2003-09-19
KR100946812B1 (en) 2010-03-09
EP1324307A2 (en) 2003-07-02
CN100347737C (en) 2007-11-07
US7038646B2 (en) 2006-05-02
KR20030053012A (en) 2003-06-27
DE10162766A1 (en) 2003-07-03
CN1427389A (en) 2003-07-02
US20030122760A1 (en) 2003-07-03

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