Touch panel, touch device using the same, and touch control method

摘要

A touch panel includes a light guide plate, a light emitting device, a light sensing module, and a controller. The light guide plate has a touch plane. The light emitting device applies an incident light to the light guide plate, and at least a portion of the incident light is completely reflected in the light guide plate. When an object touches the touch plane, a total internal reflection of at least a portion of the incident light at a touch point is frustrated. The light sensing module detects a wavelength of an ambient light. The controller controls the light emitting device according to the ambient light wavelength detected by the light sensing module to adjust an incident light wavelength of the incident light emitted by the light emitting device so that the incident light wavelength differs from the ambient light wavelength.

主权项

1. A touch panel, comprising:
a light guide plate having a touch plane; a light emitting device for applying an incident light to the light guide plate, at least a portion of the incident light being completely reflected in the light guide plate, wherein when an object touches the touch plane, a total internal reflection of at least a portion of the incident light at a touch point is frustrated; a light sensing module for detecting an ambient light wavelength of an ambient light; a controller for controlling the light emitting device according to the ambient light wavelength detected by the light sensing module to adjust an incident light wavelength of the incident light emitted by the light emitting device so that the incident light wavelength differs from the ambient light wavelength; and a database for storing a plurality of adjustment data; wherein the controller selects the incident light wavelength of the incident light according to the ambient light wavelength and the adjustment data so that a difference between the incident light wavelength and the ambient light wavelength is greater than a threshold.