发明名称 |
Miniaturized electronic apparatus |
摘要 |
An electronic apparatus has a solar battery and a liquid crystal display unit for displaying a plurality of digits. A plurality of column electrodes are provided for each digit, and a plurality of common electrodes are provided for all the digits. A regulator receives and stabilizes the output voltage of the solar battery. A pulse generator generates a clock pulse signal. It is an oscillator with CMOS structure to permit implementation as a LSI. A CPU is driven by the stabilized voltage and the clock pulse signal to provide data to be displayed on the display unit. A liquid crystal driver circuit applies common signals, which can assume two different voltage levels and have a waveform with the logic level thereof inverted for every one held cycle period, to the common electrodes. The driver circuit applied column signals of either one of the two voltage levels corresponding to the display data to the column electrodes. Voltages corresponding to differences between the segment signals and common signals are applied across the liquid crystal of the display unit, whereby the display unit is driven by a multi-static system. The regulator, CPU and liquid crystal driver circuit are assembled in a single chip LSI.
|
申请公布号 |
US4806923(A) |
申请公布日期 |
1989.02.21 |
申请号 |
US19860841900 |
申请日期 |
1986.03.20 |
申请人 |
CASIO COMPUTER CO., LTD. |
发明人 |
YANAI, TSUGUO;INAGAKI, YUKIO;MATSUO, SHOJI;FUJISAWA, HIDETAKA |
分类号 |
G02F1/133;G06F1/26;G09G3/18;(IPC1-7):G06F3/14 |
主分类号 |
G02F1/133 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|