JPS5482928A - Liquid crystal drive system - Google Patents
Liquid crystal drive systemInfo
- Publication number
- JPS5482928A JPS5482928A JP15103177A JP15103177A JPS5482928A JP S5482928 A JPS5482928 A JP S5482928A JP 15103177 A JP15103177 A JP 15103177A JP 15103177 A JP15103177 A JP 15103177A JP S5482928 A JPS5482928 A JP S5482928A
- Authority
- JP
- Japan
- Prior art keywords
- drive
- liquid crystal
- dynamic
- switch
- circuit
- 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
Links
Landscapes
- Liquid Crystal (AREA)
- Electric Clocks (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
PURPOSE: To perform effective display, by constituting the drive system of liquid crystal display with any system of dynamic and static drive system and by designating for the selection for the both systems.
CONSTITUTION: The display unit 39 constituted with the liquid crystal bodies 40 to 45 arranging the electrodes displayed with any of the dynamic and static drive systems, and the counter 23 consisting of the counters 24 to 28 and the decoders 29 to 32 feeding the pulse of the oscillation circuit 21 generating the reference pulse converted from second information to hour information via the frequency dividing circuit 22 to the selection circuits 33 to 37, are provided. The drive signal is fed from the drive signal generation circuit 38 to the selection circuits 33 to 37 and constitution is made that the selection circuits 33 to 37 are selectively switched according to the potential of the junction A of the switch 13 and the night illumination lamp 14 with the circuit 38, which corresponds to the dynamic drive when the switch 13 is open and the static drive when the switch 13 is closed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15103177A JPS5482928A (en) | 1977-12-15 | 1977-12-15 | Liquid crystal drive system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15103177A JPS5482928A (en) | 1977-12-15 | 1977-12-15 | Liquid crystal drive system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5482928A true JPS5482928A (en) | 1979-07-02 |
JPS6116989B2 JPS6116989B2 (en) | 1986-05-02 |
Family
ID=15509779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15103177A Granted JPS5482928A (en) | 1977-12-15 | 1977-12-15 | Liquid crystal drive system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5482928A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58160989A (en) * | 1982-03-19 | 1983-09-24 | 沖電気工業株式会社 | Liquid crystal drive circuit |
-
1977
- 1977-12-15 JP JP15103177A patent/JPS5482928A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58160989A (en) * | 1982-03-19 | 1983-09-24 | 沖電気工業株式会社 | Liquid crystal drive circuit |
JPH0257314B2 (en) * | 1982-03-19 | 1990-12-04 | Oki Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6116989B2 (en) | 1986-05-02 |
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