| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a structure which is suitable for the measurement of the position of contact between a substrate and a human body and integrated in the substrate of an LCD by providing at least one resistor which is integrated between a signal layer and a circuit, arranged integrally on the substrate, and is formed together with the signal layer. SOLUTION: Resistors Ri are symmetrically in the center of a screen and Ri=Rn+1-i. When the screen is linearly correctly, equal potentials are horizontal lines and at equal intervals from the top to the bottom. Specially, the whole upper edge part has a corner part potential +Vm and the lower edge part has -Vm. The current density is proportional to an electric field, which is proportional to the gradient of the potential distribution. Therefore, when the equal potentials are straight lines having equal intervals, the current density is constant crossing the screen and flows vertically from the top to the bottom. Potential variation along a long-side resistor Re accurately matches potential variation in the screen. This condition is met only when the long-side resistor Re has constant resistance per unit length and the potential at the junction between a corner part resistor Rc and the long-side resistor Re is equal to the corner part voltage Vm.</p> |
