Hon Hai Precision Industry Co., Ltd.

Tsinghua University

Xin-He Wang

Shou-Shan Fan

Kai-Li Jiang

Peng Liu

Jiang-Tao Wang

Qing-Yu Zhao

Dong-Qi Li

Wen-Yun Wu

Yu-Jun He

An electrostatic sensing device comprises an electrostatic sensing module and a control unit electrically connected to the electrostatic sensing module. The electrostatic sensing module comprises a first electrostatic sensing element comprising opposite ends, and two first electrodes. The two first electrodes are separately located on and electrically connected to the two opposite ends of the first electrostatic sensing element. The first electrostatic sensing element is a single walled carbon nanotube or a few-walled carbon nanotube. The control unit electrically is configured to apply a direct voltage to the first electrostatic sensing element and measure a current/resistance of the first electrostatic sensing element.

Electrostatic sensing device

A hover controlling device includes a sensing unit and a hover control unit. The sensing unit includes a plurality of first electrostatic sensing elements, a plurality of first electrodes, a plurality of second electrostatic sensing elements, and a plurality of third electrodes located on a substrate. Each first electrostatic sensing element and each second electrostatic sensing element include a single walled carbon nanotube or a few-walled carbon nanotube. The resistances of the plurality of first electrostatic sensing elements and the plurality of second electrostatic sensing elements are changed in process of a sensed object with electrostatic near, but does not touch the plurality of first electrostatic sensing elements and the plurality of second electrostatic sensing elements. The hover control unit is electrically connected to the plurality of first electrostatic sensing elements and the plurality of second electrostatic sensing elements.

Hover controlling device

A touch and hover sensing device includes a hover sensing module is located on a first surface of a substrate, the hover sensing module includes a plurality of first electrostatic sensing elements and a plurality of second electrostatic sensing elements electrically insulated from each other. Each of the plurality of first electrostatic sensing elements and each of the plurality of second electrostatic sensing elements include a single walled carbon nanotube or few-walled carbon nanotube. A touch sensing module is located on a second surface of the substrate. The hover sensing module and the touch sensing module are connected to a control chip, the control chip controls the hover sensing module and the touch sensing module simultaneously working or working separately, to sense a position coordinate of the sensed object.

Touch and hover sensing device

An electrostatic sensing device comprises an electrostatic sensing module and a control unit electrically connected to the electrostatic sensing module. The electrostatic sensing module comprises a first electrostatic sensing element comprising opposite ends, and two first electrodes. The two first electrodes are separately located on and electrically connected to the two opposite ends of the first electrostatic sensing element. The first electrostatic sensing element is one-dimensional semiconducting linear structure with a diameter less than 100 nanometers. The control unit electrically is configured to apply a direct voltage to the first electrostatic sensing element and measure a current/resistance of the first electrostatic sensing element.

A touch and hover sensing device includes a sensing module, a hover sensing unit, a touch sensing unit, and a switching control unit switching between a hover mode and a touch mode. The sensing module includes a plurality of first electrostatic sensing elements and a plurality of second electrostatic sensing elements electrically insulated from each other and located on a surface of an insulating substrate. The plurality of first electrostatic sensing elements is spaced from each other and extends along a first direction, and the plurality of second electrostatic sensing elements is spaced from each other and extends along a second direction. Each first electrostatic sensing element and each second electrostatic sensing element includes a single walled carbon nanotube or few-walled carbon nanotube.

An electrostatic sensing method is provided. An electrostatic sensing device comprising an electrostatic sensing module comprising a first electrostatic sensing element, and a control unit electrically connected to the electrostatic sensing module is provided. The first electrostatic sensing element is one-dimensional semiconducting linear structure. A direct voltage is applied to the first electrostatic sensing element. A sensed object with electrostatic charge is moved to the electrostatic sensing device in a distance near but not touching the first electrostatic sensing element. A resistance changed value of the first electrostatic sensing element is measured.

Electrostatic sensing method

An electrometer includes a sensing module and a control module. The sensing module includes an electrostatic sensing element. The electrostatic sensing element includes two opposite ends. Each end of the electrostatic sensing element is electrically connected to the control module. When an object with electrostatic charge is near but does not touch the electrostatic sensing element, the resistance of the electrostatic sensing element can be changed. The control module electrically connect to the electrostatic sensing element, the control module measures the resistance variation &#x394;R of the electrostatic sensing element and converts the resistance variation &#x394;R into the static electricity potential.

Electrometer

An electrometer includes a sensing module and a control module. The sensing module includes a plurality of electrostatic sensing elements and a plurality of second electrodes. The plurality of electrostatic sensing elements are single walled carbon nanotubes or few-walled carbon nanotubes. The plurality of electrostatic sensing elements and the plurality of second electrodes are alternately arranged in a series connection. The control module is coupled to the two ends of the series connection and configured to measure a resistance variation &#x394;R of the series connection and convert the resistance variation &#x394;R into a static electricity potential.

An electrostatic distribution measuring instrument includes a sensing module and a control module. The sensing module includes a plurality of electrostatic sensing elements electrically insulated from each other. The plurality of electrostatic sensing elements is single walled carbon nanotubes or few-walled carbon nanotubes. The control module is coupled to the sensing module and configured to measure a resistance variation &#x394;R of the sensing module and convert the resistance variation &#x394;R into a static electricity potential.

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Beijing, China

Xin-He Wang