Raydium Semiconductor Corporation

Kun-Pei Lee

Yi-Ying Lin

Chang-Ching Chiang

Hsin-Wei Shieh

Kuan-Ming Lin

Yu-Chin Hsu

A capacitive fingerprint sensing apparatus includes sensing electrodes, a sensing driver and a processing module. Under a first self-capacitive sensing mode, the sensing driver combines M adjacent sensing electrodes to form a first sensing electrode set to perform a first self-capacitive sensing to obtain a first self-capacitive fingerprint sensing signal; under a second self-capacitive sensing mode, the sensing driver combines N adjacent sensing electrodes to form a second sensing electrode set to perform a second self-capacitive sensing to obtain a second self-capacitive fingerprint sensing signal. M and N are positive integers larger than 1. The processing module generates a first self-capacitive fingerprint pattern and a second self-capacitive fingerprint pattern according to first self-capacitive fingerprint sensing signal and second self-capacitive fingerprint sensing signal and combines them into a third self-capacitive fingerprint pattern. The M adjacent sensing electrodes and the N adjacent sensing electrodes share at least one sensing electrode.

Capacitive fingerprint sensing apparatus

A capacitive fingerprint sensing apparatus includes sensing electrodes, a sensing driver, and a processing module. In a self-capacitive sensing mode, the sensing driver performs self-capacitive sensing on at least one sensing electrode to obtain a first fingerprint sensing signal. In a mutual-capacitive sensing mode, the sensing driver performs mutual-capacitive sensing on at least two adjacent sensing electrodes to obtain a second fingerprint sensing signal. The processing module generates a first fingerprint pattern and a second fingerprint pattern according to the first fingerprint sensing signal and the second fingerprint sensing signal and combines the first fingerprint pattern and the second fingerprint pattern into a combined fingerprint pattern. The resolution of the combined fingerprint pattern along at least one direction is larger than that of the first fingerprint pattern and the second fingerprint pattern along the at least one direction.

Capacitive fingerprint sensing apparatus and capacitive fingerprint sensing method

An in-cell touch panel and its trace layout are disclosed. The in-cell touch panel includes a plurality of pixels. Each pixel has a laminated structure bottom-up including a substrate, a TFT layer, a liquid crystal layer, a color filter layer, and a glass layer. The TFT layer is disposed on the substrate. A first conductive layer and a second conductive layer are integrated in the TFT layer. The liquid crystal layer is disposed on the TFT layer. The color filter layer is disposed on the liquid crystal layer. The glass layer is disposed on the color filter layer. The design of touch sensing electrodes and their trace layout in the in-cell touch panel of the application is simple and it can effectively reduce cost and reduce the RC loading of a common electrode.

In-cell touch panel and trace layout thereof

An in-cell mutual-capacitive touch panel is disclosed. The in-cell mutual-capacitive touch panel includes a plurality of pixels. A laminated structure of each pixel includes a substrate, a TFT layer, a liquid crystal layer, a color filter layer and a glass layer. The TFT layer is disposed on the substrate. A first conductive layer and a common electrode are disposed in the TFT layer. The first conductive layer is arranged in mesh type or only arranged along a first direction in an active area of the in-cell mutual-capacitive touch panel. The liquid crystal layer is disposed above the TFT layer. The color filter layer is disposed above the liquid crystal layer. The glass layer is disposed above the color filter layer.

In-cell mutual-capacitive touch panel

An in-cell mutual-capacitive touch panel and its trace layout are disclosed. Horizontal traces of first direction touch electrode and horizontal traces of MFL electrode are disposed at both upper-side and lower-side out of an active area of in-cell mutual-capacitive touch panel respectively. The horizontal traces of MFL electrode are closer to the active area of in-cell mutual-capacitive touch panel than the horizontal traces of first direction touch electrode to reduce the additional coupling between the traces and electrodes. At least one trace is disposed at right-side and left-side out of an active area of in-cell mutual-capacitive touch panel to reduce entire RC loading of the in-cell mutual-capacitive touch panel.

In-cell mutual-capacitive touch panel and trace layout thereof

An in-cell mutual-capacitive touch panel having low RC loading and its trace layout are disclosed. A first conductive layer and a second conductive layer are used as bridge of TX electrode and MFL electrode above an active area of in-cell mutual-capacitive touch panel. The second conductive layer and a transparent conductive layer are used as bridge of TX electrode and MFL electrode at the lower-side out of the active area. Cooperated with at least one driving IC having more than two sets of TX electrode pins and MFL electrode pins and the number of the at least one driving IC is determined according to the size of the in-cell mutual-capacitive touch panel. At the same time, the second conductive layer has traces in parallel distributed in the same electrode area of the active area. Therefore, the RC loading of the in-cell mutual-capacitive touch panel of the invention can be largely reduced.

A capacitive fingerprint sensing apparatus including sensing electrodes, a scanning driver, a sensing driver and a processing module is disclosed. In a self-capacitive sensing mode, the scanning driver drives a pair of adjacent scanning lines among the scanning lines and the sensing driver performs self-capacitive sensing through at least one sensing line among the sensing lines to obtain a first fingerprint sensing signal. In a mutual-capacitive sensing mode, the scanning driver drives the pair of adjacent scanning lines and the sensing driver performs mutual-capacitive sensing through at least two adjacent sensing lines among the sensing lines to obtain a second fingerprint sensing signal. The processing module generates a first fingerprint pattern and a second fingerprint pattern according to the first fingerprint sensing signal and the second fingerprint sensing signal and combines the first fingerprint pattern and the second fingerprint pattern into a combined fingerprint pattern.

A capacitive touch panel is disclosed. The capacitive touch panel includes a laminated structure. The laminated structure includes a liquid crystal displaying module, a single-layer touch sensor, and a polarizing module. The single-layer touch sensor is disposed on the liquid crystal displaying module. The polarizing module is disposed on the single-layer touch sensor. The single-layer touch sensor includes a plurality of first electrodes and a plurality of second electrodes. The first electrodes and the second electrodes are configured in an asymmetric electrode arranging way, so that one of the first electrodes will be arranged corresponding to at least two of the second electrodes.

Capacitive touch panel having single-layer touch sensor

An on-cell capacitive touch panel is disclosed. Its laminated structure includes a LCD module, a touch sensing module, and a polarizing module. The touch sensing module is disposed on the LCD module. The polarizing module is disposed on the touch sensing module. The touch sensing module includes a touch sensor pattern having a single-layer ITO structure. The touch sensor pattern includes a first pattern unit and a second pattern unit which are the same and both have at least one first electrode, second electrode, and extending electrode. The first electrode is arranged along a first direction and the second electrode is arranged along a second direction. The first direction and second direction are vertical. The first electrode crosses the second electrode via a bridge structure. The extending electrode surrounds the first electrode and it is arranged along the first direction.

Capacitive touch panel having an on-cell type and a laminated structure

Capacitive touch panel

An on-cell capacitive touch panel is disclosed. The capacitive touch panel includes a laminated structure. The laminated structure includes a LCD module, a touch sensing module, and a polarizing module. The touch sensing module is disposed on the LCD module. The polarizing module is disposed on the touch sensing module. The touch sensing module includes a touch sensor pattern. The touch sensor pattern has a single-layer ITO structure and includes at least one first electrode and at least one second electrode. The at least one first electrode is arranged along a first direction and the at least one second electrode is arranged along a second direction. The first direction and the second direction are two mutually perpendicular directions.

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Zhunan, Taiwan

Kun-Pei Lee