JPS5253695A - Brightness modulation signal generating device for liquid crystal disp lay apparatus - Google Patents

Brightness modulation signal generating device for liquid crystal disp lay apparatus

Info

Publication number
JPS5253695A
JPS5253695A JP12964975A JP12964975A JPS5253695A JP S5253695 A JPS5253695 A JP S5253695A JP 12964975 A JP12964975 A JP 12964975A JP 12964975 A JP12964975 A JP 12964975A JP S5253695 A JPS5253695 A JP S5253695A
Authority
JP
Japan
Prior art keywords
liquid crystal
generating device
signal generating
modulation signal
brightness modulation
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.)
Pending
Application number
JP12964975A
Other languages
Japanese (ja)
Inventor
Naotake Saito
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12964975A priority Critical patent/JPS5253695A/en
Publication of JPS5253695A publication Critical patent/JPS5253695A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: The ratios of brightness levels are arbitrarily determined and the employment of LSI is facilitated in the case of performing gradation display by accomplishing gradation control through modulation of pulse width by using a liquid crystal matrix panel.
COPYRIGHT: (C)1977,JPO&Japio
JP12964975A 1975-10-28 1975-10-28 Brightness modulation signal generating device for liquid crystal disp lay apparatus Pending JPS5253695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12964975A JPS5253695A (en) 1975-10-28 1975-10-28 Brightness modulation signal generating device for liquid crystal disp lay apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12964975A JPS5253695A (en) 1975-10-28 1975-10-28 Brightness modulation signal generating device for liquid crystal disp lay apparatus

Publications (1)

Publication Number Publication Date
JPS5253695A true JPS5253695A (en) 1977-04-30

Family

ID=15014726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12964975A Pending JPS5253695A (en) 1975-10-28 1975-10-28 Brightness modulation signal generating device for liquid crystal disp lay apparatus

Country Status (1)

Country Link
JP (1) JPS5253695A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334593A (en) * 1986-07-30 1988-02-15 ホシデン株式会社 Multi-contrast display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6334593A (en) * 1986-07-30 1988-02-15 ホシデン株式会社 Multi-contrast display

Similar Documents

Publication Publication Date Title
JPS5338223A (en) Driving system of liquid crystal panel
JPS52149090A (en) Liquid crystal display device
JPS51124395A (en) Liquid crystal display unit
JPS5253695A (en) Brightness modulation signal generating device for liquid crystal disp lay apparatus
JPS5263014A (en) Driving system of multiple matrix liquid crystal panel
JPS52115198A (en) Liquid crystal matrix panel
JPS538021A (en) Liquid crystal display device
JPS5217793A (en) Liquid crystal display device
JPS542096A (en) Drive unit for liquid crystal matrix panel
JPS53143194A (en) Liquid crystal display device
JPS5250619A (en) Image display device
JPS5332696A (en) Driving method of liquid crystal matrix display device
JPS5313896A (en) Liquid crystal display device
JPS5441759A (en) Projection shape display device
JPS5220850A (en) Liquid crystal display method
JPS53101295A (en) Driving system for liquid crystal display unit
JPS54100224A (en) Luminance modulator for liquid crystal display unit
JPS51138398A (en) Liquid crystal display device
JPS5274296A (en) Liquid crystal driving circuit
JPS52110528A (en) Numeric representation system of display device
JPS5253694A (en) Driving device for liquid crystal matrix
JPS5424597A (en) Liquid crystal display unit
JPS5390798A (en) Liquid crystal display device
JPS5355048A (en) Liquid crystal color display device
JPS51121292A (en) Liquid crystal display device