| Presentation | 1999/3/18 An Optical Design for Reflective Color STN-LCDs S. Komura, K. Kuwabara, O. Itou, K. Funahata, K. Kondo, T. Saito, Y. Nagashima, K. Kubo, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes the optical design method for reflective color STN-LCDs with single polarizers. The design method ensures the devices have high reflectance, high contrast ratio, and good color purity. The design of an STN liquid crystal layer, a polarizer, two birefringent films, color filters and a diffusion film are presented and a novel evaluation method for reflective LCDs is proposed. In the design of the STN LC cell, the polarizer, and the birefringent films, i.e. the design of the Single Polarizer STN LCD mode, we focus on achieving achromatic dark representation, since we found earlier that the chromaticity in the dark representation significantly affects the color balance. The polarizer and birefringent films are optimized to achieve achromatic dark representation for a given STN LC layer. The retardation of the STN LC layer is optimized to achieve achromatic dark representation and high reflectance. The color filters are optimized to achieve a large color gamut and high transmittance with good white balance. The diffusion film is designed to increase the reflection in an office. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Reflective Color LCDs / STN-LCDs |
| Paper # | EID98-204 |
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| Committee | EID |
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| Conference Date | 1999/3/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Registration To | Electronic Information Displays (EID) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Optical Design for Reflective Color STN-LCDs |
| Sub Title (in English) | |
| Keyword(1) | Reflective Color LCDs |
| Keyword(2) | STN-LCDs |
| 1st Author's Name | S. Komura |
| 1st Author's Affiliation | Hitachi Research Laboratory, Hitachi, Lid.() |
| 2nd Author's Name | K. Kuwabara |
| 2nd Author's Affiliation | Hitachi Research Laboratory, Hitachi, Lid. |
| 3rd Author's Name | O. Itou |
| 3rd Author's Affiliation | Hitachi Research Laboratory, Hitachi, Lid. |
| 4th Author's Name | K. Funahata |
| 4th Author's Affiliation | Hitachi Research Laboratory, Hitachi, Lid. |
| 5th Author's Name | K. Kondo |
| 5th Author's Affiliation | Hitachi Research Laboratory, Hitachi, Lid. |
| 6th Author's Name | T. Saito |
| 6th Author's Affiliation | Electron Tube & Devices Div., Hitachi, Ltd. |
| 7th Author's Name | Y. Nagashima |
| 7th Author's Affiliation | Electron Tube & Devices Div., Hitachi, Ltd. |
| 8th Author's Name | K. Kubo |
| 8th Author's Affiliation | Electron Tube & Devices Div., Hitachi, Ltd. |
| Date | 1999/3/18 |
| Paper # | EID98-204 |
| Volume (vol) | vol.98 |
| Number (no) | 665 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |