公开(公告)号：US09904251B2

公开(公告)日：2018-02-27

申请号：US14996527

申请日：2016-01-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chunwon Byun ,  Jae-Eun Pi ,  Yong Hae Kim ,  Hakyun Lee ,  Chi-Sun Hwang

IPC: G06F3/038 ,  G03H1/22 ,  G02F1/13 ,  G03H1/02

CPC classification number: G03H1/2294 ,  G02F1/13 ,  G03H2001/0224 ,  G09G3/003 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/0297 ,  G09G2320/0223

Abstract: A holographic display apparatus includes a light source unit, a spatial light modulator, and a spatial light modulator control circuit for controlling the spatial light modulator, the spatial light modulator control circuit including a data driving circuit for providing a data voltage to a signal line, a demultiplexer circuit which includes a plurality of switching elements connected to the signal line and sequentially turned on, and transfers the data voltage to a transfer line through a turned-on switching element among the switching elements, and a first element connected between the transfer line and a data line, passing a current flowing from the transfer line to the data line, and blocking a current flowing from the data line to the transfer line.