GB2311630B - Power supply device - Google Patents

Power supply device

Info

Publication number
GB2311630B
GB2311630B GB9710386A GB9710386A GB2311630B GB 2311630 B GB2311630 B GB 2311630B GB 9710386 A GB9710386 A GB 9710386A GB 9710386 A GB9710386 A GB 9710386A GB 2311630 B GB2311630 B GB 2311630B
Authority
GB
United Kingdom
Prior art keywords
power supply
supply device
power
supply
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.)
Expired - Lifetime
Application number
GB9710386A
Other versions
GB9710386D0 (en
GB2311630A (en
Inventor
Hisanobu Ishiyama
Shigeki Aoki
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 JP14853394A external-priority patent/JP3329077B2/en
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of GB9710386D0 publication Critical patent/GB9710386D0/en
Publication of GB2311630A publication Critical patent/GB2311630A/en
Application granted granted Critical
Publication of GB2311630B publication Critical patent/GB2311630B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G09G3/3674—Details of drivers for scan electrodes
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/24—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/24—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only
    • G05F3/242—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the field-effect type only with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply 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
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • 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
    • G09G2320/0606—Manual adjustment
    • 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
    • G09G2320/066—Adjustment of display parameters for control of contrast
GB9710386A 1993-07-21 1994-07-20 Power supply device Expired - Lifetime GB2311630B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP18039293 1993-07-21
JP19254393 1993-08-03
JP14853394A JP3329077B2 (en) 1993-07-21 1994-06-07 Power supply device, liquid crystal display device, and power supply method
GB9414611A GB2280521B (en) 1993-07-21 1994-07-20 Power supply device,liquid crystal display device,and method of supplying power

Publications (3)

Publication Number Publication Date
GB9710386D0 GB9710386D0 (en) 1997-07-16
GB2311630A GB2311630A (en) 1997-10-01
GB2311630B true GB2311630B (en) 1997-11-12

Family

ID=27451187

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9710386A Expired - Lifetime GB2311630B (en) 1993-07-21 1994-07-20 Power supply device
GB9710387A Expired - Lifetime GB2311631B (en) 1993-07-21 1994-07-20 Power supply device

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9710387A Expired - Lifetime GB2311631B (en) 1993-07-21 1994-07-20 Power supply device

Country Status (1)

Country Link
GB (2) GB2311630B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035418A1 (en) * 2007-07-28 2009-01-29 Vastview Technology Inc. Direct current converter for electronic device, has circuit with current source, and producing compensation voltage, which is superimposed to regulate voltage level of output direct current voltage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100437A (en) * 1976-07-29 1978-07-11 Intel Corporation MOS reference voltage circuit
GB2015206A (en) * 1978-01-11 1979-09-05 Citizen Watch Co Ltd Electronic timepiece
EP0532191A2 (en) * 1991-08-22 1993-03-17 Sharp Kabushiki Kaisha Drive circuit for display apparatus
WO1993009487A1 (en) * 1991-10-29 1993-05-13 Lattice Semiconductor Corporation Tunable voltage reference circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141002A (en) * 1977-03-11 1979-02-20 Sperry Rand Corporation Modular columnar electroluminescent display control circuit
US4348666A (en) * 1979-06-20 1982-09-07 Nippon Gakki Seizo Kabushiki Kaisha Signal level display apparatus
JP2695981B2 (en) * 1990-10-05 1998-01-14 株式会社東芝 LCD drive power supply circuit
JP3234043B2 (en) * 1993-05-10 2001-12-04 株式会社東芝 Power supply circuit for driving LCD
SG54123A1 (en) * 1993-12-22 1998-11-16 Seiko Epson Corp Liquid-crystal display system and power supply method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100437A (en) * 1976-07-29 1978-07-11 Intel Corporation MOS reference voltage circuit
GB2015206A (en) * 1978-01-11 1979-09-05 Citizen Watch Co Ltd Electronic timepiece
EP0532191A2 (en) * 1991-08-22 1993-03-17 Sharp Kabushiki Kaisha Drive circuit for display apparatus
WO1993009487A1 (en) * 1991-10-29 1993-05-13 Lattice Semiconductor Corporation Tunable voltage reference circuit

Also Published As

Publication number Publication date
GB9710387D0 (en) 1997-07-16
GB9710386D0 (en) 1997-07-16
GB2311631B (en) 1997-11-12
GB2311630A (en) 1997-10-01
GB2311631A (en) 1997-10-01

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20140719