TOUCH MODULE AND TOUCH SCREEN

摘要

In a touch module, a light emitted by the light source undergoes a total reflection in the third substrate. when a first spacer is pressed against a third substrate by pressing a location on a second substrate, the light undergoing the total reflection in the third substrate escapes out of the third substrate and irradiates onto a photosensitive part corresponding to the pressed first spacer, the irradiated photosensitive part generates an electrical signal, and a pressed location on the second substrate is determined by detecting the electrical signal transmitted to an optical current detection line electrically connected to the irradiated photosensitive part. The touch module may reduce the cost and is adapted to be applied to a large size touch screen.

主权项

1. A touch module, comprising:
a first substrate and a second substrate provided opposite to each other; a plurality of photosensitive parts arranged in an array on one side of the first substrate facing the second substrate; a plurality of optical current detection lines electrically connected to the plurality of photosensitive parts, respectively; a plurality of first spacers provided on one side of the second substrate facing the first substrate; a third substrate located between the first substrate and the second substrate and separated from the first spacer on the second substrate; and at least one light source provided at a side edge of the third substrate, wherein a light emitted by the light source undergoes a total reflection in the third substrate, when the first spacer is pressed against the third substrate by pressing a location on the second substrate, the light undergoing the total reflection in the third substrate escapes out of the third substrate and irradiates onto the photosensitive part corresponding to the pressed first spacer, the irradiated photosensitive part generates an electrical signal, and a pressed location on the second substrate is determined by detecting the electrical signal transmitted to the optical current detection line electrically connected to the irradiated photosensitive part.