Drive method and device for touch-control sensor and capacitive touch-control module
A technology of capacitive touch and driving method, applied in the field of capacitive touch modules, can solve the problems of general products and methods without suitable structures and methods, inconvenience, etc., to overcome serious attenuation problems, reduce difficulties, and fast stabilization time Effect
Inactive Publication Date: 2010-06-23
ELAN MICROELECTRONICS CORPORATION
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Problems solved by technology
[0005] It can be seen that the above-mentioned existing touch sensor obviously still has inconvenience and defects in product structure and use, and needs to be further improved urgently.
In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure and method for general products and methods to solve the above-mentioned problems. This is obviously a problem that relevant industry players are eager to solve
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[0054] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, in conjunction with the accompanying drawings and preferred embodiments, the method and device for driving the touch sensor and the capacitive touch module proposed according to the present invention will be described below. The specific implementation, structure, method steps, features and effects thereof are described in detail below.
[0055] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. For convenience of description, in the following embodiments, the same elements are denoted by the same numbers.
[0056] see figure 2 As shown, it is a flow chart of the steps of the touch sensor driving method in a preferred embodiment of the present invention. In step S211, a co...
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The invention relates to a drive method and a device for a touch-control sensor and a capacitive touch-control module. The drive method for the touch-control sensor provides a pure or approximate sinusoidal current source which can generate approximate sinusoidal waveform to the touch-control sensor of capacitive touch-control output and input interfaces. The method comprises the following steps of: providing a control device so as to control a switch module and providing the switch module, wherein the switch module is provided with a plurality of switch components and opens or closes respectively connected power supply line sequentially at each time point so as to output the pure or approximate sinusoidal current source to the touch-control sensor. Therefore, the invention can overcome severe attenuation of signals at the tail end of a RC network and reduce the difficulty for sensing control signals of a touch-control pad, the provided pure or approximate sinusoidal current supply can have shorter stabilization time and greater amplitude than a constant current supply providing square wave, and then the invention can be used for indium tin oxide panels with more and larger sizes.
Description
technical field [0001] The present invention relates to a touch sensor (touch sensor) driving method and device and a capacitive touch module, in particular to a method for providing a pure or approximate sinusoidal current source capable of generating an approximate sinusoidal waveform to indium tin oxide ( Indium Tin Oxide (ITO) touch sensor, touch sensor driving method and device, and capacitive touch module. Background technique [0002] In response to integration and fashion trends, various touch and detection technologies are applied to notebook computers, keyboards, mobile phones, digital audio-visual players, digital cameras and other handheld devices, mobile communications and computer peripheral products, and ITO is also widely used Applied in the touch module. see figure 1 , which is a schematic diagram of a conventional two-dimensional capacitive touch sensor with double-layer ITO traces. The touch sensor 10 has a plurality of X-axis wires 11 and Y-axis wires ...
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Inventor 叶奇典蔡尚澕
Owner ELAN MICROELECTRONICS CORPORATION