Industrial Technology Research Institute

Ming-Wei Chang

Tsung-Ju Gwo

Tse-Min Deng

Chin-Chung Nien

Da-Chen Pang

Zhen-Yuan Chung

Chia-Ming Chang

Tzi-Cker Chiueh

Shih-Ping Lee

Ming-Hsiu Hsu

Gwo-Shiang Lee

Hsu-Cheng Deng

Ping-Ta Tai

Chao-Sheng Tseng

Hong Chen Ho

Sung-Tao Lin

Han-Jou Li

Te-I Chiu

Mu-Yue Chen

A user input method includes the following steps. A virtual keyboard layout and a control region are displayed. The virtual keyboard layout includes a plurality of key subgroups each mapped to a respective one of a plurality of regions of the control region. Locations of an object from at least one captured image are extracted to identify a location of a feature point of the object. A target region in which the feature point is located is determined. Keys mapped to the target region are determined. Movements of the object are translated as input data to the user interface system.

System and method for receiving user input and program storage medium thereof

A capacitive ultrasonic transducer includes a first electrode, an insulating layer formed on the first electrode, at least one support frame formed on the insulating layer, and a second electrode formed space apart from the first electrode, wherein the first electrode and the second electrode define an effective area of oscillation of the capacitive ultrasonic transducer, and the respective length of the first electrode and the second electrode defining the effective area of oscillation is substantially the same.

Method of fabricating capacitive ultrasonic transducers

The invention is to provide a ring body and supporting structure of a vibratile gyroscope. The ring body is a thin sheet ring body having a height. The supporting structure is provided for supporting the ring body. The supporting structure is located on two opposing edges of the ring body. The supporting structures provide axial and radial supporting forces to restrain the ring body, providing better sensitivity and capability to resist environmental vibration and noise. Additionally, a reinforcing structure surrounding the ring body is arranged at an interior surface of the ring body to raise the rigidity of the ring body and maintain an elliptical resonance mode. If the reinforcing structure si arranged as high as the ring body, then it is possible to arrange electrodes at both inner and outer sides of the ring body to raise the effective area of driving and/or sensing electrodes. Raising the effective sensing area is further beneficial to reduce the needed driving voltage and increase the signal-to-noise ratio.

Ring body and supporting structure of vibratile gyroscope

A capacitive ultrasonic device is capable of detecting an object and providing information regarding an orientation of the object. The capacitive ultrasonic device includes a power source configured to generate a voltage signal, an array of sensor elements, each of the sensor elements being configured to generate an ultrasonic wave during a first period of the voltage signal and detect whether a wave is reflected from the object during a second period of the voltage signal when the voltage signal is applied thereto, and a control unit configured to activate a first portion of the array of sensor elements through the power source, and activate a second portion of the array of sensor elements when at least one of the first portion of the sensor elements detects a wave reflected from the object.

Capacitive ultrasonic sensors and display devices using the same

A capacitive ultrasonic transducer includes a flexible layer, a first conductive layer on the flexible layer, a support frame on the first conductive layer, the support frame including a flexible material, a membrane over the support frame being spaced apart from the first conductive layer by the support frame, the membrane including the flexible material, a cavity defined by the first conductive layer, the support frame and the membrane, and a second conductive layer on the membrane.

Method for fabricating capacitive ultrasonic transducers

A method of fabricating a polymer-based capacitive ultrasonic transducer, which comprises the steps of: (a) providing a substrate; (b) forming a first conductor on the substrate; (c) coating a sacrificial layer on the substrate while covering the first conductor by the same; (d) etching the sacrificial layer for forming an island while maintaining the island to contact with the first conductor; (e) coating a first polymer-based material on the substrate while covering the island by the same; (f) forming a second conductor on the first polymer-based material; (g) forming a via hole on the first polymer-based material while enabling the via hole to be channeled to the island; and (h) utilizing the via hole to etch and remove the island for forming a cavity.

Method of fabricating a polymer-based capacitive ultrasonic transducer

A capacitive ultrasonic transducer includes a first electrode, an insulating layer formed on the first electrode, at least one support frame formed on the insulating layer, and a second electrode formed spaced apart from the first electrode, wherein the first electrode and the second electrode define an effective area of oscillation of the capacitive ultrasonic transducer, and the respective length of the first electrode and the second electrode defining the effective area of oscillation is substantially the same.

Capacitive ultrasonic transducer and method of fabricating the same

The present invention relates to an imprint method for manufacturing micro capacitive ultrasonic transducer, which uses a mold with a particularly patterned surface to imprint into a flexible material thus forming the oscillation cavities of the ultrasonic transducer. Such imprint method not only realizes the volume manufacturing and reduces the cost, but also can precisely control the geometrical size of the oscillation cavities and thus shorten the distance between the upper and the lower electrodes to the micro/nano level, largely improving the sensitivity of the transducer. Moreover, the present invention further changes the procedure for manufacturing micro capacitive ultrasonic transducer of the prior art, which can both save the process steps and overcome the disadvantages in the prior art.

Growing community of inventors

Taichung County, Taiwan

Ming-Wei Chang