Patent ID: 7777726

Claim:
A touch panel comprising: a pair of transparent insulating substrates each having a transparent conductive film on one side thereof and arranged to oppose each other with a gap on the sides having the transparent conductive films, and to form a space therebetween through a seal portion having corners corresponding to corners of end portions of the transparent insulating substrates, the panel being produced by pressing the pair of transparent insulating substrates after the arranging the pair of transparent insulating substrates to oppose each other through the seal portion, so as to reduce the seal portion to a predetermined thickness; expanding a gap between the pair of transparent insulating substrates prior to setting the seal portion; and setting said seal portion, wherein at least the opposing gap of the opposing portion at each corner of the end portion of the pair of transparent insulating substrates is set so that it becomes wide at a portion adjacent to the inside of the space with the corner of the seal portion being the boundary and relatively narrow at a portion adjacent to the outside of the space, wherein one of the pair of transparent insulating substrates has an outwardly protruding shape from the inside to the outside of the space, wherein the sectional shape of at least the corner of the seal portion has a wedge shape so that at least the opposing gap at the opposing portion of the corner of the end portion of the pair of transparent insulating substrates is wide at a portion adjacent to the inside of the space with the corner of the seal portion being the boundary and is narrow at a portion adjacent to the outside of the space, and wherein the seal portion includes one or more rigid spacer particles.