LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR SETTING COMMON VOLTAGE OF SAME DEVICE

申请公布号：JP2004170721(A)

申请号：JP20020337119

申请日期：2002.11.20

申请公布日期：2004.06.17

申请人：

NEC MITSUBISHI DENKI VISUAL SYSTEMS KK

发明人：NAKANO TAKAO

分类号：G02F1/133;G09F9/00;G09F9/35;G09G3/20;G09G3/34;G09G3/36;(IPC1-7):G09G3/36

主分类号：G02F1/133

摘要：PROBLEM TO BE SOLVED: To obtain a liquid crystal display device capable of detecting external light by an optical sensor without providing any window in front of the product. SOLUTION: The top surface of a liquid crystal display panel 18 is a display surface. On the reverse surface of the liquid crystal display panel 18, a light guide plate 9 is fitted. The light guide plate 19 is fitted with a back light 9 shown in the figure. The light emitted by the back light 9 is guided by the light guide plate 19 to the display surface of the liquid crystal back panel 18. A reflecting sheet 20 is arranged on the bottom surface of the light guide plate 19. The optical sensor 10 is fitted to the flank of the light guide plate 19 while having its photodetection surface directed to the inner side of the light guide plate 19. COPYRIGHT: (C)2004,JPO

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