Matrix type induction device
A sensing device, matrix technology, applied in the field of matrix sensing devices, can solve problems such as increasing the complexity of circuit layout, achieve the effect of reducing the amount of sensing line configuration and reducing production costs
Active Publication Date: 2011-12-07
AU OPTRONICS CORP
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a matrix sensing device with a structure that reduces the amount of sensing line configuration, so as to solve the problem that the sensing device in the prior art needs to set a considerable number of sensing lines to output sensing signals, so as to increase the complexity of the circuit layout The problem
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[0040] In order to make the present invention more comprehensible, the matrix sensing device according to the present invention is hereinafter described in detail with reference to specific embodiments and accompanying drawings, but the provided embodiments are not intended to limit the scope of the present invention.
[0041] figure 2 It is a schematic structural diagram of a matrix sensing device in a preferred embodiment of the present invention. like figure 2 As shown, the matrix sensing device 200 includes a driving circuit 210, an analog multiplexing unit 220, an analog to digital conversion unit 230, a microcontroller unit 240, a plurality of driving lines 215, a plurality of sensing lines 225, and a matrix sensing area 290 . The matrix sensing area 290 includes a plurality of sensing areas 250 , and each sensing area 250 includes a sensing unit 251 , a first transistor 253 and a second transistor 255 . The microcontroller unit 240 includes a coordinate mapping uni...
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A matrix-type induction device, in the structure of which the allocation of induction lines is reduced, comprises a plurality of drive lines, a plurality of induction lines and a matrix-type induction zone, wherein the matrix-type induction zone includes a plurality of induction zones, and each induction zone includes a first transistor, a second transistor, and an induction unit used for generating the induction signals; the first transistor is coupled to the induction unit and the corresponding induction lines; the second transistor is coupled to the first transistor, a first corresponding drive line and a second corresponding drive line; and according to the drive signals of the first corresponding drive line and the second corresponding drive line, the first transistor is matched with the second transistor, so as to control the signal connection between the induction unit and the corresponding induction lines.
Description
technical field [0001] The invention relates to a matrix induction device, in particular to a matrix induction device with a structure for reducing the amount of induction line arrangement. Background technique [0002] Liquid crystal display (Liquid Crystal Display, LCD) has the advantages of light and thin appearance, power saving and no radiation, so it has been widely used in multimedia players, mobile phones, personal digital assistants (PDA), computer monitors, or flat-screen TVs and other electronic products. In addition, the use of liquid crystal display devices to perform touch input functions has gradually become popular, that is, touch-type liquid crystal display devices are more and more widely used. Generally speaking, touch panels of touch-type liquid crystal display devices are mainly resistive touch panels and capacitive touch panels. The sensing capacitor locates the touched position through signal processing according to the capacitance change of the sens...
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IPC IPC(8): G06F3/03
Inventor 陈武民廖致霖施鸿民
Owner AU OPTRONICS CORP