Capacitance type touch control panel device
A capacitive touch and touch panel technology, applied in the direction of electrical digital data processing, instruments, data processing input/output process, etc., can solve the problems of affecting capacitance, difficult signal processing, and not easy to popularize
Active Publication Date: 2013-06-19
SUPERC TOUCH CORP
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Problems solved by technology
However, the contact area, temperature, humidity, and pressure will all affect the capacitance, and the noise introduced by fingers will also cause difficulty in signal processing, which will increase the cost and make it difficult to popularize.
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[0026] Please refer to it first figure 1 and figure 2 , figure 1 is a schematic diagram of the operation of a preferred embodiment of the present invention, figure 2 It is a system architecture diagram of a preferred embodiment of the present invention. As shown in the figure, the capacitive touch panel device 1 of the present invention includes: a touch panel 11, a multitasking selector 12, a first switch 131, a second switch 132, a third switch 133, a fourth A switch 134 , a capacitor 15 , a resistor 16 , an analog-to-digital converter 17 , and an integrating circuit 18 .
[0027] The touch panel 11 includes a plurality of parallel conductive wires. For the convenience of describing the operation mode of the present invention, the conductive wires included in the touch panel 11 in this embodiment include nineteen conductive wires 1101 - 1119 . The multitasking selector 12 is electrically connected to the conductive wires 1101 - 1119 . The first terminal a of the first...
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The invention discloses a capacitance type touch control panel device, which comprises a touch control panel, a multi-task selector, a first switch, a second switch, a third switch, a fourth switch, a resistor, a capacitor, an analogue-digital converter and an integration circuit, wherein the touch control panel comprises a plurality of conducting lines; the multi-task selector is connected to the plurality of conductive lines electrically; the first switch is connected to the multi-task selector, the second switch and the capacitor electrically; the second switch is connected to the first switch, the resistor, the integration circuit and the capacitor electrically; the third switch is connected to the capacitor and the first switch electrically; and the fourth switch is connected to the analogue-digital converter, the third switch and the integration circuit electrically. The capacitance type touch control panel device provided by the invention is designed by utilizing an energy conservation principle, so that the change of an induction capacitance value caused by the change of a contact area can be avoided, and the accuracy and the production yield of a detection position are further improved.
Description
technical field [0001] The present invention relates to a touch panel device, in particular to a capacitive touch panel device. Background technique [0002] Today's types of touch panels can be roughly divided into resistive, capacitive, and optical types according to the sensing principle. The resistive touch panel is mainly composed of two sets of upper and lower conductive layers. When in use, pressure is used to make the upper and lower electrodes conductive, and the controller detects the voltage change of the panel to calculate the position of the contact point. The capacitive touch panel mainly uses the capacitance change generated by the static electricity between the built-in electrode and the human body, and detects its coordinates from the generated current. The optical touch panel utilizes the light source receiving and blocking principle, and the panel is filled with light sources and receivers to form a matrix. When the light is blocked, the position of the s...
Claims
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IPC IPC(8): G06F3/044
Inventor 李祥宇
Owner SUPERC TOUCH CORP