JPS6473390A - Driving of matrix display panel - Google Patents

Driving of matrix display panel

Info

Publication number
JPS6473390A
JPS6473390A JP22949387A JP22949387A JPS6473390A JP S6473390 A JPS6473390 A JP S6473390A JP 22949387 A JP22949387 A JP 22949387A JP 22949387 A JP22949387 A JP 22949387A JP S6473390 A JPS6473390 A JP S6473390A
Authority
JP
Japan
Prior art keywords
emitting cells
light emitting
pulse width
scanning
voltage
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.)
Granted
Application number
JP22949387A
Other languages
Japanese (ja)
Other versions
JP2797185B2 (en
Inventor
Toyoshi Kawada
Tetsuya Kobayashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62229493A priority Critical patent/JP2797185B2/en
Publication of JPS6473390A publication Critical patent/JPS6473390A/en
Application granted granted Critical
Publication of JP2797185B2 publication Critical patent/JP2797185B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To make display luminance almost definite independently of the number of light emitting cells by controlling the display luminance correspondingly to the number of light emitting cells. CONSTITUTION: Display data for emitting cells on intersections between scanning electrodes S1 to Sm and data electrodes D1 to Dn are counted by a counter 4 or the like, and when there are many light emitting cells, the pulse width of pulses supplied from a high voltage pulse generating circuit 5 or the like is extended. Then the pulse width of synthetic writing voltage between scanning voltage corresponding to the count value of display data and data voltage is controlled. When there are many light emitting cells on the scanning electrodes, scanning voltage with wide pulse width is impressed to scanning electrodes increasing the number of light emitting cells, and even when a1 waveform accent is large, equivalent writing pulse width can be set to almost the same value as the pulse width of writing voltage to be impressed to scanning electrods reducing the number of light emitting cells. Thereby even when the numbers of light emitting cells are different, luminance can be almost equally set.
JP62229493A 1987-09-16 1987-09-16 Matrix display panel drive circuit Expired - Fee Related JP2797185B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62229493A JP2797185B2 (en) 1987-09-16 1987-09-16 Matrix display panel drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62229493A JP2797185B2 (en) 1987-09-16 1987-09-16 Matrix display panel drive circuit

Publications (2)

Publication Number Publication Date
JPS6473390A true JPS6473390A (en) 1989-03-17
JP2797185B2 JP2797185B2 (en) 1998-09-17

Family

ID=16893029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62229493A Expired - Fee Related JP2797185B2 (en) 1987-09-16 1987-09-16 Matrix display panel drive circuit

Country Status (1)

Country Link
JP (1) JP2797185B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0485592A (en) * 1990-07-30 1992-03-18 Koito Ind Ltd Information display device
JP2000221944A (en) * 1999-02-01 2000-08-11 Denso Corp Driving method of el display device, and el display device
JP2001515228A (en) * 1997-08-29 2001-09-18 キャンデサント、テクノロジーズ、コーポレーション Circuit and method for controlling brightness of a supplied device in response to an optical sensor
JP2001515229A (en) * 1997-08-29 2001-09-18 キャンデサント、テクノロジーズ、コーポレーション Circuit and method for controlling the brightness of a supplied device
JP2002221932A (en) * 2001-01-29 2002-08-09 Canon Inc Image display device and driving method for electron source
US6937214B2 (en) * 2001-12-31 2005-08-30 Wintek Corporation Method for generating uniform luminosity for displaying contents of organic light emitting diode
KR100768958B1 (en) * 2007-06-15 2007-10-19 (주)평화엔지니어링 Outlet box
US7292236B2 (en) 2001-07-10 2007-11-06 Canon Kabushiki Kaisha Display driving method and display apparatus utilizing the same
JP2013504081A (en) * 2009-09-02 2013-02-04 スコビル インダストリーズ コープ Method and apparatus for driving an electroluminescent display

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6413194A (en) * 1987-07-07 1989-01-18 Sharp Kk Driving of thin film el display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6413194A (en) * 1987-07-07 1989-01-18 Sharp Kk Driving of thin film el display device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0485592A (en) * 1990-07-30 1992-03-18 Koito Ind Ltd Information display device
JP2001515228A (en) * 1997-08-29 2001-09-18 キャンデサント、テクノロジーズ、コーポレーション Circuit and method for controlling brightness of a supplied device in response to an optical sensor
JP2001515229A (en) * 1997-08-29 2001-09-18 キャンデサント、テクノロジーズ、コーポレーション Circuit and method for controlling the brightness of a supplied device
JP2000221944A (en) * 1999-02-01 2000-08-11 Denso Corp Driving method of el display device, and el display device
JP2002221932A (en) * 2001-01-29 2002-08-09 Canon Inc Image display device and driving method for electron source
US7292236B2 (en) 2001-07-10 2007-11-06 Canon Kabushiki Kaisha Display driving method and display apparatus utilizing the same
US6937214B2 (en) * 2001-12-31 2005-08-30 Wintek Corporation Method for generating uniform luminosity for displaying contents of organic light emitting diode
KR100768958B1 (en) * 2007-06-15 2007-10-19 (주)평화엔지니어링 Outlet box
JP2013504081A (en) * 2009-09-02 2013-02-04 スコビル インダストリーズ コープ Method and apparatus for driving an electroluminescent display

Also Published As

Publication number Publication date
JP2797185B2 (en) 1998-09-17

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees