JPS5574517A - Liquid crystal display element - Google Patents
Liquid crystal display elementInfo
- Publication number
- JPS5574517A JPS5574517A JP14793278A JP14793278A JPS5574517A JP S5574517 A JPS5574517 A JP S5574517A JP 14793278 A JP14793278 A JP 14793278A JP 14793278 A JP14793278 A JP 14793278A JP S5574517 A JPS5574517 A JP S5574517A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- liquid crystal
- crystal molecules
- orientation
- lower electrodes
- 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
Links
Landscapes
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To eliminate the formation of edge domains and improve display quality by specifying the way of superposition of upper and lower electrodes according to the initial orientation inclination angle of the liquid crystal molecules on the electrode surfaces and the orientation treatment of the upper and lower electrodes.
CONSTITUTION: If in the element having the electrodes 3 of a lower substrate 1 and the electrodes 4 of an upper substrate 2 the initial orientation inclination angle of the liquid crystal molecules 11 on the electrode 3 surface is let α0 and when an electric field is applied, the liquid crystal molecules 11 rise in the arrow direction of the electric line of force 10. At this time, orientation discontinuous portions occur at the edge part molecules 11a, 11b, thus edge domains appear. These are provented by making the lower electrodes larger than the upper electrodes when formula (I) is satisfied and making the upper electrodes larger than the lower electrodes when formula (II) is satisfied where the angle measured counterclockwise by taking an arbitrary point O on the display patterns, dropping a perpendicular OP on the periphery or extension line of the patterns with the combined vector of the orientation directions 7, 6 of the liquid crystal molecules on the upper and lower substrates 2, 1 as X-axis and using O as origin is let to be θ. In this way the display is made distinct.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14793278A JPS5574517A (en) | 1978-12-01 | 1978-12-01 | Liquid crystal display element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14793278A JPS5574517A (en) | 1978-12-01 | 1978-12-01 | Liquid crystal display element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5574517A true JPS5574517A (en) | 1980-06-05 |
Family
ID=15441322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14793278A Pending JPS5574517A (en) | 1978-12-01 | 1978-12-01 | Liquid crystal display element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5574517A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61166521A (en) * | 1985-01-18 | 1986-07-28 | Seiko Epson Corp | Liquid crystal optical device |
US4624530A (en) * | 1983-04-30 | 1986-11-25 | Sharp Kabushiki Kaisha | Edge domain-free liquid crystal display of dot matrix type |
US5880802A (en) * | 1995-03-27 | 1999-03-09 | Sanyo Electric Co., Ltd. | Active matrix liquid crystal display having insulating layer larger than display electrode and smaller than video line in thickness |
US6008874A (en) * | 1995-03-27 | 1999-12-28 | Sanyo Electric Co., Ltd. | Active matrix liquid crystal display having alignment film with inclined surface |
-
1978
- 1978-12-01 JP JP14793278A patent/JPS5574517A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4624530A (en) * | 1983-04-30 | 1986-11-25 | Sharp Kabushiki Kaisha | Edge domain-free liquid crystal display of dot matrix type |
JPS61166521A (en) * | 1985-01-18 | 1986-07-28 | Seiko Epson Corp | Liquid crystal optical device |
US5880802A (en) * | 1995-03-27 | 1999-03-09 | Sanyo Electric Co., Ltd. | Active matrix liquid crystal display having insulating layer larger than display electrode and smaller than video line in thickness |
US6008874A (en) * | 1995-03-27 | 1999-12-28 | Sanyo Electric Co., Ltd. | Active matrix liquid crystal display having alignment film with inclined surface |
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