| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve a problem associated with long time required for detecting a pressing position in a conventional liquid crystal display device, in which the pressing position is identified by using a capacitance value of a liquid crystal material resulting from a gap between transparent substrates, because in the case the number of pixels is increased, time to check a detection signal is increased. <P>SOLUTION: The liquid crystal display device has a detection signal driving means 2 to apply the signal 12 for detection to transparent electrodes 1, a pressing judging means 3 to judge whether there is a pressing on the liquid crystal display device or not with a signal outputted from the transparent electrodes 1, a switching means 4 arranged between the neighboring transparent electrodes 1 and opens or closes a gap between the neighboring transparent electrodes 1 and a switch controlling means 5 to control the switching means 4, and is constructed so as to form a detection domain 16 comprising a plurality of pixels of the liquid crystal display device with the switching means 4, to detect the pressing position in the domain as a unit, and at the same time, to make the detection domain 16 change corresponding to the display state of the liquid crystal display device. Thereby detection of the pressing position is carried out at high speed. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
