Passive integrated circuit architecture and control method for scanning touch panel
An integrated circuit and touch panel technology, applied in the passive integrated circuit structure and its control field, can solve the problems of lack of flexibility, inability to solve the ghost point phenomenon, reconfiguration, etc., so as to increase the manufacturing cost, increase the application flexibility and use efficiency, The effect of improving the acquisition speed
Active Publication Date: 2016-03-30
ELAN MICROELECTRONICS CORPORATION
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Problems solved by technology
Since the scanning parameters of each sub-IC are defined in advance, and because of the different traces of the scan, different firmwares are written and different simulation parameters are set. Therefore, each sub-IC is a standardized specification and can only be used Scan fixed stitches, cannot be exchanged with other secondary ICs, and cannot reconfigure new scanning parameters based on the scanning results to scan a specific area again. In addition to the lack of application flexibility, it is also impossible to solve the phenomenon of ghost spots (Ghostphenomenon)
[0003] Therefore, there are above-mentioned inconveniences and problems in the known active integrated circuit (Integrated Circuit; IC) structure scanning touch panel.
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[0050] The present invention will be further described below in conjunction with embodiment and accompanying drawing.
[0051] see now figure 1 , figure 1 It is a schematic diagram of the first embodiment of the present invention. As shown in the figure, the passive IC structure 10 is used for scanning the touch panel 16 . The touch panel 16 has traces TR0 to TRm as sensing lines. The passive IC structure 10 includes a main IC 12 and a secondary IC 14 connected to the touch panel 16 , for example, connecting the traces TR0 to TRm. The main IC 12 controls the operation of the sub-IC 14 to scan the touch panel 16 and provides required scanning parameters through the universal transmission interface 13 . In one embodiment, the main IC 12 generates a command and transmits it to the sub-IC 14 through the universal transmission interface 13 to set its scanning parameters for scanning the touch panel 16, and the sub-IC 14 scans the touch panel with the scanning parameters in respo...
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A passive integrated circuit structure used for scanning a touch panel is characterized by comprising a master integrated circuit and at least one slave integrated circuit, wherein the slave integrated circuit is coupled with the touch panel and the master integrated circuit and used for scanning the touch panel, and scanning parameters for the slave integrated circuit to scan the touch panel are provided by the master integrated circuit. The invention provides the passive integrated circuit structure and the control method thereof, which can greatly enhance the slave integrated circuit application flexibility and the use efficiency; no hardware is required to be changed; the manufacturing cost is not increased; the scanning speed is effectively increased; and ghost image phenomenon is solved.
Description
technical field [0001] The invention relates to a touch panel, in particular to a passive integrated circuit architecture for scanning the touch panel and a control method thereof. Background technique [0002] It is a known technology to scan a touch panel by using an active integrated circuit (Integrated Circuit; IC) architecture. The active IC architecture is to pre-configure scanning parameters in a secondary (Slave) IC, such as the trace of the scan ( Trace), mode, timing and simulation parameters, etc., the secondary IC scans the touch panel according to the scanning parameters, and transmits the scanning data to a main (Master) IC for judgment. When the size of the touch panel increases, in order to reduce the scanning time, more than two sub-ICs are used to scan different areas of the touch panel simultaneously. Since the scanning parameters of each sub-IC are defined in advance, and because of the different traces of the scan, different firmwares are written and di...
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IPC IPC(8): G06F3/041
Inventor 林旻致吴珈穆
Owner ELAN MICROELECTRONICS CORPORATION