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WO2007034353A3 - Active-matrix display devices and methods of driving the same - Google Patents

Active-matrix display devices and methods of driving the same Download PDF

Info

Publication number
WO2007034353A3
WO2007034353A3 PCT/IB2006/053209 IB2006053209W WO2007034353A3 WO 2007034353 A3 WO2007034353 A3 WO 2007034353A3 IB 2006053209 W IB2006053209 W IB 2006053209W WO 2007034353 A3 WO2007034353 A3 WO 2007034353A3
Authority
WO
WIPO (PCT)
Prior art keywords
addressing period
pixel
ramp
active
matrix display
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.)
Ceased
Application number
PCT/IB2006/053209
Other languages
French (fr)
Other versions
WO2007034353A2 (en
Inventor
Hendrik J Bergveld
Den Homberg Johannes A T M Van
Franciscus A C M Schoofs
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.)
Koninklijke Philips NV
Original Assignee
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2007034353A2 publication Critical patent/WO2007034353A2/en
Publication of WO2007034353A3 publication Critical patent/WO2007034353A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active 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
    • 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
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
    • 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
    • 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
    • G09G2310/0264—Details of driving circuits
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • 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
    • G09G2320/0252—Improving the response speed
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • 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
    • G09G3/3614—Control of polarity reversal in general

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)

Abstract

A column driver circuit is for providing pixel drive signals to the columns of pixels of an active-matrix display device. The column driver circuit comprises at least one level-generation circuit (71,72,74) for generating an output voltage which ramps, wherein a desired voltage dependent on the pixel drive signal during a pixel addressing period is obtained from the ramp. In one example, the are coupled to an overdrive source (VOd) during the period (tgrey) when the output voltage of the level-generation circuit is ramped. In another example, the ramp has a current surge in a first portion (ti) of the pixel addressing period and a current dip (98) in a second portion (t2) of the pixel addressing period. In another example, a charging resistor is provided in to give a voltage step in the ramp during the pixel addressing period.
PCT/IB2006/053209 2005-09-19 2006-09-11 Active-matrix display devices and methods of driving the same Ceased WO2007034353A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05108608 2005-09-19
EP05108608.0 2005-09-19

Publications (2)

Publication Number Publication Date
WO2007034353A2 WO2007034353A2 (en) 2007-03-29
WO2007034353A3 true WO2007034353A3 (en) 2008-01-03

Family

ID=37745888

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/053209 Ceased WO2007034353A2 (en) 2005-09-19 2006-09-11 Active-matrix display devices and methods of driving the same

Country Status (1)

Country Link
WO (1) WO2007034353A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8941640B2 (en) 2012-06-08 2015-01-27 Apple Inc. Differential VCOM resistance or capacitance tuning for improved image quality
US9128713B2 (en) * 2013-01-15 2015-09-08 Synaptics Incorporated Method and circuit to optimize N-line LCD power consumption

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598308A1 (en) * 1992-11-16 1994-05-25 RCA Thomson Licensing Corporation Differential comparator circuit
US5319381A (en) * 1989-12-28 1994-06-07 Thomson Consumer Electronics Method for addressing each column of a matrix type LCD panel
US20010040548A1 (en) * 1999-12-28 2001-11-15 Nec Corp LCD and method for driving same
US20020105492A1 (en) * 2001-02-02 2002-08-08 Nec Corporation Signal line driving circuit and signal line driving method for liquid crystal display
WO2005057545A1 (en) * 2003-12-08 2005-06-23 Koninklijke Philips Electronics N.V. Display device driving circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5319381A (en) * 1989-12-28 1994-06-07 Thomson Consumer Electronics Method for addressing each column of a matrix type LCD panel
EP0598308A1 (en) * 1992-11-16 1994-05-25 RCA Thomson Licensing Corporation Differential comparator circuit
US20010040548A1 (en) * 1999-12-28 2001-11-15 Nec Corp LCD and method for driving same
US20020105492A1 (en) * 2001-02-02 2002-08-08 Nec Corporation Signal line driving circuit and signal line driving method for liquid crystal display
WO2005057545A1 (en) * 2003-12-08 2005-06-23 Koninklijke Philips Electronics N.V. Display device driving circuit

Also Published As

Publication number Publication date
WO2007034353A2 (en) 2007-03-29

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