Patent ID: 8310465
Filing Date: 2012-11-13
Classification: G02F,G06F

Abstract:
1. A touch panel comprising: a first substrate and a second substrate which are arranged so as to face each other; a first resistive film provided on a surface of the first substrate facing the second substrate; a second resistive film provided on a surface of the second substrate facing the first substrate; a protruding contact provided on the surface of the first substrate facing the second substrate and protruding to a predetermined height from the first substrate toward the second substrate, wherein, when the first substrate or the second substrate is pressed, the protruding contact electrically connects the first resistive film and the second resistive film at an area corresponding to a pressed portion due to bending and deforming of the pressed substrate; an insulating spacer arranged between the first substrate and the second substrate and defining a height of a space between the first substrate and the second substrate to be larger than the height of the protruding contact; a frame-like seal member which seals the space between the first substrate and the second substrate throughout peripheral portions of the first substrate and the second substrate; and an insulating liquid sealed in the space between the first substrate and the second substrate surrounded by the seal member, wherein the insulating spacer is arranged in an area surrounded by the seal member, and is positioned at one of a plurality of first lattice points which are arranged in a first direction at a first interval and in a second direction orthogonal to the first direction at a second interval, wherein the protruding contact is arranged in the area surrounded by the seal member, and is positioned at one of a plurality of second lattice points, excluding lattice points overlapping with the plurality of first lattice points, wherein the plurality of second lattice points are arranged in the first direction at a third interval which is narrower than the first interval and are arranged in the second direction at a fourth interval which is narrower than the second interval, and wherein the first interval is set to be an integral multiple of the third interval, the second interval is set to be an integral multiple of the fourth interval, and each of the plurality of first lattice points in the area surrounded by the seal member is set to overlap with one of the plurality of second lattice points.