FRONT-END CIRCUIT SUITABLE FOR TOUCH PANEL, FRONT-END IDENTIFICATION CIRCUIT, AND DISPLAY DEVICE

The present disclosure provides a front-end circuit suitable for a touch panel, a front-end identification circuit, and a display device. The front-end circuit comprises: a transmission channel module configured for outputting detection signals with different frequencies to channels of the touch pan...

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Bibliographische Detailangaben
Hauptverfasser:	GUO, Xiaoyu, WANG, Mingming, ZHANG, Lianghao, HUANG, Dongsheng, YU, Jing, SUN, Wei, HAN, Wenchao, MU, Shuaichen, LI, Jian, LI, Hongge
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS
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Beschreibung
Zusammenfassung:	The present disclosure provides a front-end circuit suitable for a touch panel, a front-end identification circuit, and a display device. The front-end circuit comprises: a transmission channel module configured for outputting detection signals with different frequencies to channels of the touch panel, respectively; a differential charge amplification module configured for differentially processing and amplifying channel signals of two adjacent receiving channels in the touch panel to give a differential signal; a receiving channel determination module configured for determining a receiving position of a touch point in a receiving channel according to the differential signal and a preset differential threshold; a transmission channel determination module configured for determining a transmission position where the touch point is located according to the detection signals, orthogonal signals corresponding to the detection signals, and a voltage signal corresponding to the differential signal; and a touch area