DRIVING APPARATUS AND DRIVING METHOD OF LIGHT EMITTING DISPLAY PANEL,申请号JP20050063755-传众专利搜索

DRIVING APPARATUS AND DRIVING METHOD OF LIGHT EMITTING DISPLAY PANEL

申请公布号：JP2006251011(A)

申请号：JP20050063755

申请日期：2005.03.08

申请公布日期：2006.09.21

申请人：

TOHOKU PIONEER CORP

发明人：HAYAFUJI AKINORI;MORIYA AKIRA

分类号：G09G3/30;G09G3/20;H01L51/50

主分类号：G09G3/30

摘要：<P>PROBLEM TO BE SOLVED: To provide a driving apparatus of a light emitting display panel capable of assuring predetermined display quality without greatly losing color balance even if limiter operation is performed by a limiter means in a configuration that the output limiter means is attached to a DC-DC converter. <P>SOLUTION: In the display panel 1, an arrangement area b of a monitor element for monitoring a forward voltage of each of R, G and B is formed. Based on the forward voltage obtained by each monitor element, an output voltage by each DC-DC converter is controlled and supplied to a display pixel of each of R, G and B. In order to prevent that the forward voltage value by the monitor element increases with aging and a converter output value becomes excessive, the output limiter is configured by Zener diodes ZR, ZG and ZB. Limiter values of the Zener diodes are set in different levels and even if the limiter operation is performed by aging, great loss of the color balance is prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI