JPS5570817A - Reflection type liquid crystal display element - Google Patents
Reflection type liquid crystal display elementInfo
- Publication number
- JPS5570817A JPS5570817A JP14501478A JP14501478A JPS5570817A JP S5570817 A JPS5570817 A JP S5570817A JP 14501478 A JP14501478 A JP 14501478A JP 14501478 A JP14501478 A JP 14501478A JP S5570817 A JPS5570817 A JP S5570817A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- liquid crystal
- light
- polarizing plate
- polarizing
- 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)
Abstract
PURPOSE: To improve lightness of the TN-type display element without losing its advantages by changing one of the polarizing plates of the TN-type liquid crystal display device to the specific wavelength plate and disposing a light reflecting plate to the side of said wavelength plate thereby orienting the liquid crystal molecules to the specific twisted angles.
CONSTITUTION: The liquid cyrstal cell is so made that the liquid crystal molecules orient twisted at 40W50°. It is disposed with a polarizing plate 1 on one side and a 1/4 wavelength plate 2 and reflecting plate 3 on the other. The axis of polarization of the polarizing plate 1 is made the same as the orientation direction of a transparent substrate 4 and the main axis of the wavelength plate 2 is aligned to the orientation direction of the transparent substrate 5. At this time, the incident light is made to the linearly polarized light by the polarizing plate 1, thence it is rotated 40W50° by the liquid crystal 11 to become the linearly polarized light of the same direction as the main axis of the plate 2. Hence, the transmitted light of the plate 2 is straightly reflected by the plate 3, by which reflected light 6 is obtained. On the other hand, when voltage is applied between the transparent electrodes 9, 10, the liquid crystal molecules perpendicularly orient and therefore rotatory polarization is lost and the transmitted light of the liquid crystal cell assumes angles of 40W50° to the main axis of the plate 2, and reflected light 8 is cut off by the polarizing plate 1. Hence, only one sheet of polarizing plate is required.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14501478A JPS5570817A (en) | 1978-11-24 | 1978-11-24 | Reflection type liquid crystal display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14501478A JPS5570817A (en) | 1978-11-24 | 1978-11-24 | Reflection type liquid crystal display element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5570817A true JPS5570817A (en) | 1980-05-28 |
Family
ID=15375437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14501478A Pending JPS5570817A (en) | 1978-11-24 | 1978-11-24 | Reflection type liquid crystal display element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5570817A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684551A (en) * | 1992-06-26 | 1997-11-04 | Sharp Kabushiki Kaisha | Reflective type liquid crystal display device with phase compensator and reflector with undulating surface |
| US5721600A (en) * | 1995-10-06 | 1998-02-24 | Nec Corporation | Reflective liquid crystal display with optical compensation plates |
| US6175399B1 (en) | 1997-02-10 | 2001-01-16 | Sharp Kabushiki Kaisha | Reflective type liquid crystal display device having a diffusion layer of phase separated liquid crystal and polymer |
-
1978
- 1978-11-24 JP JP14501478A patent/JPS5570817A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684551A (en) * | 1992-06-26 | 1997-11-04 | Sharp Kabushiki Kaisha | Reflective type liquid crystal display device with phase compensator and reflector with undulating surface |
| US5721600A (en) * | 1995-10-06 | 1998-02-24 | Nec Corporation | Reflective liquid crystal display with optical compensation plates |
| US6175399B1 (en) | 1997-02-10 | 2001-01-16 | Sharp Kabushiki Kaisha | Reflective type liquid crystal display device having a diffusion layer of phase separated liquid crystal and polymer |
| US6351298B1 (en) | 1997-02-10 | 2002-02-26 | Sharp Kabushiki Kaisha | Reflective type liquid crystal display device |
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