Patent ID: 8735799
Filing Date: 2014-05-27
Classification: G06F

Abstract:
1. An optical touch panel, comprising: a support plate; a light emitting element, capable of generating a light beam; an optical fiber, arranged on the support plate in a bending manner, wherein a first end of the optical fiber is capable of receiving the light beam, and thus the light beam is transmitted through the optical fiber and then outputted from a second end of the optical fiber, when the optical fiber is touched by an object, an optical return is generated within the optical fiber; an optical sensing element, disposed adjacent to the second end of the optical fiber, capable of receiving the light beam transmitted through the optical fiber and then outputting a first signal corresponding to the light beam, and capable of receiving the optical return and then outputting a second signal corresponding to the optical return; and a control unit, connecting with the optical sensing element, and capable of determining a contact location where the optical fiber is touched by the object according to the first signal and the second signal and then outputting a trigger signal corresponding to the object, wherein the optical return travels from the contact location where the optical fiber is touched by the object to the first end of the optical fiber, and the optical return is reflected by the first end of the optical fiber, travels from the first end of the optical fiber to the second end of the optical fiber, and is received by the optical sensing element in sequence.