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JPH0765952A Expired / Lapsed JP ⏱️ 0.0 years remaining

Dispersion type EL element drive circuit

Assignee: Renesas Semiconductor Manufacturing Co Ltd
•
Filing: 1993-08-31
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Granted: —
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Expires: 2013-08-31
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 小型化を実現容易にすると共に寿命延長効果 を有する分散型EL素子の駆動回路を得る。 【構成】 直流の電源電圧Vinを昇圧回路1で整流され たサージパルス列に変換し負荷である分散型EL素子2 に充電する。EL2の両端に現れる電圧が予め設定した 電圧Vref に達したことを電圧比較器5で検出し、一定 時間充電動作を停止し、EL2に充電された電荷を放電 する。以上の動作を繰り返し、EL2を駆動する。 (57) [Summary] [Object] To obtain a driving circuit of a dispersion-type EL element which facilitates miniaturization and has an effect of extending the life. [Constitution] DC power supply voltage Vin is converted into a surge pulse train rectified by a booster circuit 1 and a dispersion type EL element 2 which is a load To charge. The voltage comparator 5 detects that the voltage appearing across the EL2 reaches a preset voltage Vref, stops the charging operation for a certain period of time, and discharges the electric charge charged in the EL2. The above operation is repeated to drive EL2.

Inventors

  • 👤 Naotake Tatsumi
  • 👤 尚毅 辰巳
  • 👤 Daigo Morioka
  • 👤 大悟 森岡

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-06 09:01
CPC Classifications
H; H05; H05B; H05B44/00; Y; Y02; Y02B; Y02B20/00; Y02B20/30

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