发明名称 |
Light-responsive light-emitting diode display |
摘要 |
A light-responsive light-emitting diode display comprises a light-emitting diode circuit including a series connection of light-emitting diodes and a light-responsive current-controlling circuit connected in series to said light-emitting diode circuit for supplying a current thereto in correspondence with the ambient brightness. A unipolar photo-transistor can provide a current above a predetermined minimum value and increasing with the intensity of incident lights and can absorb excess voltages when applied. Light-responsive current-control reduces the useless power dissipation, and all solid-state display provides a very long service life.
|
申请公布号 |
US4329625(A) |
申请公布日期 |
1982.05.11 |
申请号 |
US19790058545 |
申请日期 |
1979.07.17 |
申请人 |
ZAIDAN HOJIN HANDOTAI KENKYU SHINKOKAI |
发明人 |
NISHIZAWA, JUN-ICHI;OKUNO, YASUO;TAKAHASHI, KEISHIRO |
分类号 |
G08B5/00;F21K7/00;G08G1/095;G09F9/33;G09G3/14;H01L27/15;H01L31/112;H01L33/00;(IPC1-7):H05B43/00 |
主分类号 |
G08B5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|