Light sensing touch panel and low-power driving control method thereof

Abstract

Provided is a low-power driving control method of a light sensing touch panel, which includes the following steps: measuring an ambient light field intensity of the light sensing touch panel and outputting a light field intensity signal; outputting an amplification signal adapting to a touch signal according to the light field intensity signal; amplifying the touch signal according to the amplification signal and driving the light sensing touch panel. A light sensing touch panel is also disclosed. The light sensing touch panel and the low-power driving control method can reduce the power consumption of the touch panel without affecting the touch sensitivity.

What is claimed is: 
     
         1 . A low-power driving control method of a light sensing touch panel, which comprises the following steps:
 measuring an ambient light field intensity of the light sensing touch panel and outputting a light field intensity signal;   outputting an amplification signal adapting to a touch signal according to the light field intensity signal, which comprises the following steps:   a step of a driving circuit of the light sensing touch panel being turned on when there is no touch and being turned off when there is touch;   a step of determining if the light field intensity signal is larger than a predetermined value of a stored light field intensity signal, such that if it is YES, a first magnification of stored amplification value is selected to adapt to the touch signal; and if it is No, a second magnification of stored amplification value is selected to adapt to the touch signal; wherein the first magnification is larger than the second magnification; and   a step of adjusting the amplification value to adapt to the touch signal; and   amplifying the touch signal according to the amplification signal, and driving the light sensing touch panel.   
     
     
         2 . A low-power driving control method of a light sensing touch panel, which comprises the following steps:
 measuring an ambient light field intensity of the light sensing touch panel and outputting a light field intensity signal;   outputting an amplification signal adapting to a touch signal according to the light field intensity signal; and   amplifying the touch signal according to the amplification signal and driving the light sensing touch panel.   
     
     
         3 . The low-power driving control method of the light sensing touch panel as claimed in  claim 2 , wherein the step of outputting an amplification signal adapting to a touch signal according to the light field intensity signal comprises the following steps:
 a step of a driving circuit of the light sensing touch panel being turned on when there is no touch and being turned off when there is touch; and   a step of determining if the light field intensity signal is larger than a predetermined value of a stored light field signal, such that if it is YES, a first magnification of stored amplification value is selected to adapt to the touch signal; and if it is No, a second magnification of stored amplification value is selected to adapt to the touch signal; wherein the first magnification is larger than the second magnification.   
     
     
         4 . The low-power driving control method of the light sensing touch panel as claimed in  claim 2 , wherein the step of outputting an amplification signal adapting to a touch signal according to the light field intensity signal further comprises: a step of adjusting the amplification value to adapt to the touch signal. 
     
     
         5 . The low-power driving control method of the light sensing touch panel as claimed in  claim 2 , wherein the step of outputting an amplification signal adapting to a touch signal according to the light field intensity signal comprises the following steps:
 a step of a driving circuit of the light sensing touch panel being turned off when there is no touch and being turned on when there is touch; and   a step of determining if the light field intensity signal is larger than a predetermined value of a stored light field signal, such that if it is YES, a first magnification of stored amplification value is selected to adapt to the touch signal; and if it is No, a second magnification of stored amplification value is selected to adapt to the touch signal; wherein the first magnification is smaller than the second magnification.   
     
     
         6 . The low-power driving control method of the light sensing touch panel as claimed in  claim 2 , wherein the step of outputting an amplification signal adapting to a touch signal according to the light field intensity signal further comprises: a step of adjusting the amplification value to adapt to the touch signal.