Solid state timepiece with liquid crystal display专利检索-固态电池蓄电池电化学发生器电池与电池专利检索查询-专利查询网

Solid state timepiece with liquid crystal display

阅读：959发布：2023-08-19

专利汇可以提供Solid state timepiece with liquid crystal display专利检索，专利查询，专利分析的服务。并且Disclosed is a solid state wristwatch having an improved liquid crystal time display. Solid state time-keeping components are continuously energized from a low voltage battery while the display is energized only on demand from a separate high voltage battery. The direction of current flow through the liquid crystals is reversed during display to improve display life. A highly polished mirror surface is provided on the outside of the back plate of the thin glass sandwich where it is not in contact with the liquid crystal material.，下面是Solid state timepiece with liquid crystal display专利的具体信息内容。

权利要求

1. A timekeeping device having sufficiently small size for use as a wristwatch comprising an electrical timing source, an optical time display, a time computer coupling said timing source to said time display, a power source, and a polarity reverser coupling said power source to said time display.

2. A device according to claim 1 wherein said time display is a liquid crystal display.

3. A device according to claim 2 including a second power source coupled to said timing source and said time computer.

4. A device according to claim 3 including means for continuously coupling said second power source to said timing source and said time computer.

5. A device according to claim 1 wherein said timing source comprises a crystal oscillator.

6. A device according to claim 1 wherein said time computer comprises a frequency divider and optical display decoder and driver.

7. A device according to claim 1 wherein said polarity reverser is coupled to said timing source whereby the current flow through said display may be continually reversed.

8. A device according to claim 1 wherein said display comprises a liquid crystal sandwich construction including a liquid crystal material sandwiched between spaced front and back plates, and a layer of highly polished mirror surface material on said back plate.

9. A device according to claim 8 wherein said layer comprises an aluminum film.

10. A timekeeping device having sufficiently small size for use as a wristwatch comprising a high frequency electrical timing source, a liquid crystal time display, a digital time computer coupling said timing source to said liquid crystal display, a first low voltage power source continuously coupled to said time computer, a second high voltage power source, and a demand switch coupling said high voltage power source to said liquid crystal display whereby said display is only actuated on demand.

11. A device according to claim 10 wherein said low voltage power source comprises a high capacity silver oxide cell.

12. A device according to claim 11 wherein said high voltage power source comprises a solid state battery.

13. A device according to claim 12 wherein said battery produces from 9 to 30 volts at about 1 milliampere hours minimum.

14. A device according to claim 10 including a polarity reverser coupling said liquid crystal display to said time computer whereby the potential across said display is continually reversed.

15. In an electronic wristwatch, a timing source, a liquid crystal display, a high voltage battery, a time computer coupled to said timing source and a demand switch coupling said battery to said display whereby said display is energized only on demand, and including a polarity reverser coupling said display to said time computer.

16. Apparatus according to claim 15 wherein said reverser comprises a plurality of of solid state bidirectional gates coupled to said display.

17. Apparatus according to claim 16 wherein said display comprises a plurality of liquid crystal elements arranged to form a decimal digital display.

18. Apparatus according to claim 17 wherein said elements comprise liquid crystal bar segments.

19. Apparatus according to claim 18 including a separate gate for each of said segments, and a flip-flop coupling said time computer to said gates.

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Solid state timepiece with liquid crystal display

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