JPS5477025A - Liquid crystal display unit - Google Patents
Liquid crystal display unitInfo
- Publication number
- JPS5477025A JPS5477025A JP14387777A JP14387777A JPS5477025A JP S5477025 A JPS5477025 A JP S5477025A JP 14387777 A JP14387777 A JP 14387777A JP 14387777 A JP14387777 A JP 14387777A JP S5477025 A JPS5477025 A JP S5477025A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- display unit
- polarizing plate
- light
- 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
- Position Input By Displaying (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
PURPOSE: To obtain a liquid crystal display unit, to which information can be inputted by pointing out on the panel surface of it with a pen, by combining a photo detector with the liquid-crystal display element.
CONSTITUTION: In case of using the TN liquid crystal display unit of a reflection type, polarizing plate 1, TN liquid crystal cell 2, polarizing plate 3, and reflex mirror 4 are stacked in a sandwich shape, and photo selector 7 is arranged under reflex mirror 4. Reflex mirror 4 is made semitransparent, or a small hole is provided to light path 6 from light pen 5. By providing a small hole or a part where polarization is not caused to light path 6 at one polarizing plate, light from light pen 5 can be allowed to pass through even when the display on the liquid crystal is in process. On the transparent TN liquid crystal display unit, a display light source is replaced as a substitute for reflex mirror 4 and photo detector 7 is provided between the corresponding light source and polarizing plate 3, thereby obtaining the same constitution as the reflection type one.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14387777A JPS5477025A (en) | 1977-12-02 | 1977-12-02 | Liquid crystal display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14387777A JPS5477025A (en) | 1977-12-02 | 1977-12-02 | Liquid crystal display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5477025A true JPS5477025A (en) | 1979-06-20 |
Family
ID=15349078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14387777A Pending JPS5477025A (en) | 1977-12-02 | 1977-12-02 | Liquid crystal display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5477025A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57127240A (en) * | 1981-01-30 | 1982-08-07 | Olympus Optical Co Ltd | Input and display device |
JPS5862682A (en) * | 1981-10-09 | 1983-04-14 | 株式会社日立製作所 | Liquid crystal display |
JPS59185380A (en) * | 1983-04-07 | 1984-10-20 | セイコーエプソン株式会社 | Optically inputtable active panel |
JPS59185381A (en) * | 1983-04-07 | 1984-10-20 | セイコーエプソン株式会社 | Optically inputtable memory type active panel |
JPS59187847U (en) * | 1983-05-31 | 1984-12-13 | 日本電気ホームエレクトロニクス株式会社 | Image input/output device |
JPS59223055A (en) * | 1983-05-31 | 1984-12-14 | Nec Home Electronics Ltd | Picture transmitting and receiving system |
JPS6019358A (en) * | 1983-07-14 | 1985-01-31 | Iwatsu Electric Co Ltd | Picture overlay printer |
JPS6093546A (en) * | 1983-10-26 | 1985-05-25 | Sharp Corp | Handwriting input device |
JPS60225226A (en) * | 1984-04-24 | 1985-11-09 | Canon Inc | Electronic appliance |
JPS60233727A (en) * | 1984-05-07 | 1985-11-20 | Canon Inc | Display input device |
JPS618342U (en) * | 1984-06-18 | 1986-01-18 | 株式会社小松製作所 | Information input/output device |
JPS6395528A (en) * | 1986-10-13 | 1988-04-26 | Software Sosaetei:Kk | Sheet type input and display method and device therefor |
-
1977
- 1977-12-02 JP JP14387777A patent/JPS5477025A/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57127240A (en) * | 1981-01-30 | 1982-08-07 | Olympus Optical Co Ltd | Input and display device |
JPS5862682A (en) * | 1981-10-09 | 1983-04-14 | 株式会社日立製作所 | Liquid crystal display |
JPH0546553B2 (en) * | 1983-04-07 | 1993-07-14 | Seiko Epson Corp | |
JPS59185380A (en) * | 1983-04-07 | 1984-10-20 | セイコーエプソン株式会社 | Optically inputtable active panel |
JPS59185381A (en) * | 1983-04-07 | 1984-10-20 | セイコーエプソン株式会社 | Optically inputtable memory type active panel |
JPS59187847U (en) * | 1983-05-31 | 1984-12-13 | 日本電気ホームエレクトロニクス株式会社 | Image input/output device |
JPS59223055A (en) * | 1983-05-31 | 1984-12-14 | Nec Home Electronics Ltd | Picture transmitting and receiving system |
JPS6019358A (en) * | 1983-07-14 | 1985-01-31 | Iwatsu Electric Co Ltd | Picture overlay printer |
JPS6093546A (en) * | 1983-10-26 | 1985-05-25 | Sharp Corp | Handwriting input device |
JPS60225226A (en) * | 1984-04-24 | 1985-11-09 | Canon Inc | Electronic appliance |
JPS60233727A (en) * | 1984-05-07 | 1985-11-20 | Canon Inc | Display input device |
JPS618342U (en) * | 1984-06-18 | 1986-01-18 | 株式会社小松製作所 | Information input/output device |
JPS6395528A (en) * | 1986-10-13 | 1988-04-26 | Software Sosaetei:Kk | Sheet type input and display method and device therefor |
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