Raydium Semiconductor Corporation

Food Industry Research and Development Institute

Yung-Hsiang Yang

Yi-Hong Chen

Chien-Ti Chang

Yu-Hui Liu

Chu-Chin Chen

Hsiao-Hui Feng

Yu-Chun Lin

Chih-Wei Chu

Shu-Kuang Chou

Chung-Tai Cheng

Yu-Nan Yen

An amplifier circuit applied to a source driver of a display apparatus includes a first input terminal, a second input terminal, an operational amplifier, an output stage and an output terminal. The first input terminal receives a first input signal. The second input terminal receives a second input signal. The operational amplifier is coupled to the first input terminal and second input terminal and receives the first input signal and second input signal and outputs a first control signal and a second control signal respectively. The output stage includes a first BJT and a second BJT coupled in series between a first terminal and a second terminal. The first BJT and second BJT are coupled to the operational amplifier and receive the first control signal and second control signal respectively. The output terminal is coupled between the first BJT and second BJT and outputs an output signal.

Amplifier circuit applied to display apparatus

An electromagnetic touch-control screen structure, comprising: a display panel; a touch-control plate over the display panel; an electromagnetic induction plate over the touch-control plate; and a cover lens attached on the electromagnetic induction plate. The electromagnetic touch-control screen of the disclosure, by deploying reasonable structure and manufacturing technique, stacks an electromagnetic induction plate with a touch-control plate, a cover lens and a display panel. Compared with existing manufacturing techniques, it can reduce one time of lamination operation, and dramatically decrease the thickness and weight of the electromagnetic structure, so that it can meet the need of lightness and thinness, for touch-control display equipments, like cellphone.

Holding current circuit of LED driving apparatus and operating method thereof

A driving circuit includes a plurality of light-emitting units, a plurality of switches, and a bias current module, wherein the light-emitting units are coupled with each other in series and are driven with an input voltage varying according to a frequency. Each switch has a reference voltage and a critical activation voltage and includes a light-emitting end and a bias end opposite to the light-emitting end, wherein the light-emitting end is coupled with the light-emitting units, and the bias ends of the switches are coupled with each other. The bias current module is coupled with the bias ends of the switches and has an operating bias voltage varying according to the frequency, wherein each switch is driven to be activated or to be deactivated according to a relation of the critical activation voltage and a difference between the reference voltage and the operating bias voltage.

Driving circuit

A control circuit applied in a light emitting diode (LED) driver includes a counter, a sample circuit, and a signal source. The counter counts a parameter indicating the duty cycle width of a dimming signal in response to a front edge of the dimming signal. The sample circuit obtains a sample signal by means of sampling the most significant bit (MSB) of the parameter in response to the rear edge of the dimming signal. The duty cycle width is determined to be greater than a threshold value and smaller than that when the sample signal corresponds with a terminal value and an initial value, respectively. The signal source provides a reference voltage corresponding to first level and that corresponding to second level, higher than the first level, to drive a boost converter of the LED driver in response to the terminal value and the initial value, respectively.

Control circuit and light emitting diode driver and method using thereof

The invention discloses five peptides which can be used as angiotensin converting enzyme inhibitor. The subject invention also discloses a process for the preparation of the products having angiotensin converting enzyme inhibitory activity, which comprises the following steps: (a) adding protein hydrolase to the solution of chicken residues for reaction; (b) separating the chicken residues and liquid after the reaction of step (a) and collecting the separated liquid; and (c) drying the liquid obtained from step (b) to obtain the products.

Growing community of inventors

Hsinchu, Taiwan

Yung-Hsiang Yang