Reconfigurable touch sensing for touch-display panel

A touch-sensing-enabled display module is provided. In the module, a display panel has an electroluminescent layer, such as an organic light emitting diode (OLED) layer, sandwiched between cathode electrodes and anode electrodes. The anode electrodes transmit touch-sensing signals induced at the dis...

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Bibliographische Detailangaben
Hauptverfasser:	Chan, Wing Chi Stephen, Liu, Xiacong, Ng, Sing, Lui, Siu Hong, Liu, Hon Sheung
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY PHYSICS SEMICONDUCTOR DEVICES TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A touch-sensing-enabled display module is provided. In the module, a display panel has an electroluminescent layer, such as an organic light emitting diode (OLED) layer, sandwiched between cathode electrodes and anode electrodes. The anode electrodes transmit touch-sensing signals induced at the display panel. The MSN performs multiplexing and summing on the touch-sensing signals to produce output-channel signals for touch sensing. The multiplexing and the summing are reconfigurable such that the touch-sensing signals are dynamically selected for summing to produce one or more output-channel signals. A touch controller measures the output-channel signals to generate touch data. The module further includes a display driver for driving the cathode and anode electrodes. By using the MSN, the display panel is able to provide adaptive sensor reconfiguration. One particular advantage of adaptive sensor reconfiguration is that the signal-to-noise ratio of a touch signal is improved, increasing accuracy in touch detection.