WO2003034387A3 - Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator - Google Patents

Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator Download PDF

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Publication number
WO2003034387A3
WO2003034387A3 PCT/US2002/033427 US0233427W WO03034387A3 WO 2003034387 A3 WO2003034387 A3 WO 2003034387A3 US 0233427 W US0233427 W US 0233427W WO 03034387 A3 WO03034387 A3 WO 03034387A3
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
boost regulator
reference voltage
securing
video display
Prior art date
Application number
PCT/US2002/033427
Other languages
French (fr)
Other versions
WO2003034387A2 (en
Inventor
Robert E Lechevalier
Original Assignee
Clare Micronix Integrated Syst
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 Clare Micronix Integrated Syst filed Critical Clare Micronix Integrated Syst
Priority to AU2002343544A priority Critical patent/AU2002343544A1/en
Publication of WO2003034387A2 publication Critical patent/WO2003034387A2/en
Publication of WO2003034387A3 publication Critical patent/WO2003034387A3/en

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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3216—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3275—Details of drivers for data electrodes
    • G09G3/3283—Details of drivers for data electrodes in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements
    • 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
    • G09G2310/0248—Precharge or discharge of column electrodes before or after applying exact column voltages
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
    • 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
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel

Abstract

An apparatus for generating and providing a stable reference voltage to a boost regulator that generates a drive voltage for a current source in e.g. an OLED or PLED display device. The apparatus comprises a clamping circuit that is configured to receive a constant voltage and a variable voltage. The clamping circuit is further configured to generate the reference voltage based on the constant voltage or variable voltage depending on which is the greater of the two. The clamping circuit provides the reference voltage to the boost regulator at a level that is at least sufficient to cause the boost regulator to output a non-zero voltage. The variable voltage may comprise either a precharge voltage signal or a sampling voltage generated in response to a sampled column voltage.
PCT/US2002/033427 2001-10-19 2002-10-17 Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator WO2003034387A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002343544A AU2002343544A1 (en) 2001-10-19 2002-10-17 Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator

Applications Claiming Priority (22)

Application Number Priority Date Filing Date Title
US34258201P 2001-10-19 2001-10-19
US34385601P 2001-10-19 2001-10-19
US34337001P 2001-10-19 2001-10-19
US34363801P 2001-10-19 2001-10-19
US34610201P 2001-10-19 2001-10-19
US34279101P 2001-10-19 2001-10-19
US34278301P 2001-10-19 2001-10-19
US34263701P 2001-10-19 2001-10-19
US35375301P 2001-10-19 2001-10-19
US34279301P 2001-10-19 2001-10-19
US34279401P 2001-10-19 2001-10-19
US60/342,582 2001-10-19
US60/343,856 2001-10-19
US60/343,638 2001-10-19
US60/343,370 2001-10-19
US60/342,783 2001-10-19
US60/342,637 2001-10-19
US60/342,794 2001-10-19
US60/346,102 2001-10-19
US60/342,791 2001-10-19
US60/342,793 2001-10-19
US60/353,753 2001-10-19

Publications (2)

Publication Number Publication Date
WO2003034387A2 WO2003034387A2 (en) 2003-04-24
WO2003034387A3 true WO2003034387A3 (en) 2003-11-20

Family

ID=27582780

Family Applications (10)

Application Number Title Priority Date Filing Date
PCT/US2002/033373 WO2003034576A2 (en) 2001-10-19 2002-10-17 Method and system for charge pump active gate drive
PCT/US2002/033374 WO2003034385A2 (en) 2001-10-19 2002-10-17 System and method for illumination timing compensation in response to row resistance
PCT/US2002/033426 WO2003033749A1 (en) 2001-10-19 2002-10-17 Matrix element precharge voltage adjusting apparatus and method
PCT/US2002/033375 WO2003034386A2 (en) 2001-10-19 2002-10-17 Method and system for ramp control of precharge voltage
PCT/US2002/033369 WO2003034384A2 (en) 2001-10-19 2002-10-17 Method and system for precharging oled/pled displays with a precharge latency
PCT/US2002/033427 WO2003034387A2 (en) 2001-10-19 2002-10-17 Method and clamping apparatus for securing a minimum reference voltage in a video display boost regulator
PCT/US2002/033428 WO2003034388A2 (en) 2001-10-19 2002-10-17 Circuit for predictive control of boost current in a passive matrix oled display and method therefor
PCT/US2002/033574 WO2003034391A2 (en) 2001-10-19 2002-10-17 Method and system for adjusting the voltage of a precharge circuit
PCT/US2002/033364 WO2003034383A2 (en) 2001-10-19 2002-10-17 Drive circuit for adaptive control of precharge current and method therefor
PCT/US2002/033583 WO2003034587A1 (en) 2001-10-19 2002-10-17 Method and system for proportional plus integral loop compensation using a hybrid of switched capacitor and linear amplifiers

Family Applications Before (5)

Application Number Title Priority Date Filing Date
PCT/US2002/033373 WO2003034576A2 (en) 2001-10-19 2002-10-17 Method and system for charge pump active gate drive
PCT/US2002/033374 WO2003034385A2 (en) 2001-10-19 2002-10-17 System and method for illumination timing compensation in response to row resistance
PCT/US2002/033426 WO2003033749A1 (en) 2001-10-19 2002-10-17 Matrix element precharge voltage adjusting apparatus and method
PCT/US2002/033375 WO2003034386A2 (en) 2001-10-19 2002-10-17 Method and system for ramp control of precharge voltage
PCT/US2002/033369 WO2003034384A2 (en) 2001-10-19 2002-10-17 Method and system for precharging oled/pled displays with a precharge latency

Family Applications After (4)

Application Number Title Priority Date Filing Date
PCT/US2002/033428 WO2003034388A2 (en) 2001-10-19 2002-10-17 Circuit for predictive control of boost current in a passive matrix oled display and method therefor
PCT/US2002/033574 WO2003034391A2 (en) 2001-10-19 2002-10-17 Method and system for adjusting the voltage of a precharge circuit
PCT/US2002/033364 WO2003034383A2 (en) 2001-10-19 2002-10-17 Drive circuit for adaptive control of precharge current and method therefor
PCT/US2002/033583 WO2003034587A1 (en) 2001-10-19 2002-10-17 Method and system for proportional plus integral loop compensation using a hybrid of switched capacitor and linear amplifiers

Country Status (3)

Country Link
US (8) US20030169107A1 (en)
AU (9) AU2002335107A1 (en)
WO (10) WO2003034576A2 (en)

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