PURPOSE: To simplify correction from the area of a display sheet in the case that recording coordinates are distorted by arranging the display sheet for which the accuracy for the reading coordinate is not requested in the periphery of a tablet surface.
CONSTITUTION: In a liquid crystal display device 4, there are an area incapable of displaying and an area on which an electrode is arranged in the periphery of a display area, and the display sheet 3 is adhered on peripheral four sides in a form to cover those parts, and arbitrary character and figure are previously printed on the display sheet 3. A transparent tablet 2 is arranged on the liquid crystal display device 4 and the display surface of the display sheet 3, and it can be used as an input device to select the display content of the display sheet 3 by the same surface. Generally speaking, distortion occurs frequently nearer the periphery of an input surface in the input device with a transparency, therefore, the correction for the reading coordinate is performed, however, a corrective arithmetic operation on the area can be simplified by arranging the display sheet 3 in such way.
| JPS6083130 | SEE-THROUGH TYPE DATA INPUT DEVICE |
| WO/2001/061455 | INPUT UNIT ARRANGEMENT |
| JP6665994 | Electronic display module and devices using it |
KUROSE KOICHI
MURAKAMI AKIO
ITO IKUO
ONO SHOJI
MATSUSE TOSHIYA
