METHOD FOR JUDGING CAPACITANCE TYPE TOUCH BUTTONS

摘要

A method for judging capacitance type touch buttons in touch sensing technical field includes that: when touching a button, determining the change trend of the charge quantity on the button; a charg regulation is performed to the charge accumulation area corresponding to each button, until the charge quantity in the charge accumulation area corresponding to the button remains unchanged; calculating the charge changing quantity of the charge accumulation area when touching the button, and calculating the ratio between the charge changing quantity of the charge accumulation area and the charge balance quantity as well; and when the change trend of the charge quantity on the button is decrease and the ratio between the charge changing quantity of the charge accumulation area corresponding to the button and the charge balance quantity is larger than or equal to the first threshold value and smaller than the third threshold value, or when the change trend of the charge quantity on the button is increase and the ratio between the charge changing quantity of the charge accumulation area corresponding to the button and the charge balance quantity is larger than or equal to the second threshold value and smaller than the third threshold value, the button is the touched button. The capacitance type touch buttons are judged more accurately according to the present invention.