JPS55111918A - Image conversion method of memory type liquid crystal display device - Google Patents
Image conversion method of memory type liquid crystal display deviceInfo
- Publication number
- JPS55111918A JPS55111918A JP1924379A JP1924379A JPS55111918A JP S55111918 A JPS55111918 A JP S55111918A JP 1924379 A JP1924379 A JP 1924379A JP 1924379 A JP1924379 A JP 1924379A JP S55111918 A JPS55111918 A JP S55111918A
- Authority
- JP
- Japan
- Prior art keywords
- state
- liquid crystal
- mixed liquid
- liquid crystals
- display device
- 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)
- Liquid Crystal Substances (AREA)
- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To enable the brightness and darkness of the stored and display images to be reversed with ease by applying the voltage above the fixed voltage determined by the characteristics of p-type cholesteric liquid crystal in pulse form for a certain time alone.
CONSTITUTION: The display device formed by sandwiching the mixed liquid crystals containing nematic liquid crystal having positive dielectric anisotropy and rotatory material, preferably the mixture composed of rotatory material 5W35wt%, an nematic type liquid crystal for the rest and the one having spiral pitches of about 1W5μm, between a pair of electrode substrates having perpendicular-orientation- treated surfaces is operated as follows. First, it is put in the low voltage display state formed by the transparent part composed of the mixed liquid crystals of a ground state and the mixed liquid crystals of a metastable focal conic state, thence the voltage sufficient for allowing the foregoing metastable state to shift to a homeotropic state is applied in pulse form between the electrode substrates for the time sufficient for allowing the mixed liquid crystals of a ground state to shift to a focal conic state and maintaining the same in this state.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1924379A JPS55111918A (en) | 1979-02-21 | 1979-02-21 | Image conversion method of memory type liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1924379A JPS55111918A (en) | 1979-02-21 | 1979-02-21 | Image conversion method of memory type liquid crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55111918A true JPS55111918A (en) | 1980-08-29 |
| JPS613412B2 JPS613412B2 (en) | 1986-02-01 |
Family
ID=11993957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1924379A Granted JPS55111918A (en) | 1979-02-21 | 1979-02-21 | Image conversion method of memory type liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55111918A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987001468A1 (en) * | 1985-09-06 | 1987-03-12 | Consolidated Technology Pty. Ltd. | Method and apparatus for controlling a liquid crystal device |
| US5189535A (en) * | 1986-12-11 | 1993-02-23 | Fujitsu Limited | Liquid crystal display element and method for driving same |
-
1979
- 1979-02-21 JP JP1924379A patent/JPS55111918A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987001468A1 (en) * | 1985-09-06 | 1987-03-12 | Consolidated Technology Pty. Ltd. | Method and apparatus for controlling a liquid crystal device |
| US5189535A (en) * | 1986-12-11 | 1993-02-23 | Fujitsu Limited | Liquid crystal display element and method for driving same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS613412B2 (en) | 1986-02-01 |
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