Display device

Abstract

Abstract PURPOSE:To obtain an easily usable display device, upon which gaze of a user can be concentrated, by assembling a two dimensional image pickup element in the display device and uniting the image pickup and display. CONSTITUTION:A user 14 who is an object is positioned in front of the chassis 24 of this display device and a display 21 having a displaying screen 22, lighting light source 26, optical lens 25, and image pickup element 23 are provided in the chassis chassis 24 facing the user 14. This display device is constituted in such way. Picture signals from an input terminal 27 are supplied to a display controlling circuit 28 and a picture is reproduced and displayed on the displaying screen 22 by synchronizing the light transmissivity of each picture element 33 of the display device 21 to the picture signals and selectively controlling the transmittance. Moreover, a reading circuit 29 connected with a display controlling circuit 28 reads the image pickup element 23 and outputs the reading results to an output terminal 30 as picture element signals. The circuit 28 is caused to have a mode switching function which switches modes between a display mode that controls the light transmissivity of the picture elements in accordance with the picture signals and image pickup mode that sets the picture elements transparent and takes the image of the object 14 with the element 23. Furthermore, if necessary, a pointing detecting circuit is provided and pointing by means of a write pen can be made possible.

Inventors

• 👤 Chikara Yuse
• 👤 湯瀬　主税
• 👤 Kazumi Komiya
• 👤 小宮　一三

Bibliographic Details