| 摘要 |
<p>PURPOSE: To improve the quality of picture, to reduce its cost and to improve the efficiency of work by improving the luminance of an image projected to a screen. CONSTITUTION: A display integrated type tablet 1 is used for a transmission type picture display device arranged so as to display an image on an display area of a display surface and transmit light from a light source 30 through the display surface, the coordinate position of the tip of an input pen 20 annexed to the tablet 1 is detected, a processing area is set up in the display area so as to point out a certain position in the processing area by the input pen 20, and a dispersion sheet 48 for dispersing a part of light from the light source 30 is arranged just under the processing area. Thereby light from the light source 30 is dispersed in the processing area by the sheet 48 so as not to display the processing area on a screen whose processing area can be observed from an operator's position.</p> |
