Huayuan Semiconductor (shenzhen) Limited Company

Powerchip Semiconductor Corporation

Li-Lun Chi

Richard Landry Gray

Junjie Zheng

Chih-Chang Wei

Chiu-Tsung Huang

Jyun-Long Lin

Yung-Ting Chen

Jen-Chi Chung

Ke-Kung Liao

Embodiments relate to a signal detector circuit suitable for a display device that detects and decodes a power line communication signal. The signal detector circuit includes an averaging circuit, a comparator, a sampling circuit, a decoder circuit, and a regulator circuit. The averaging circuit receives the power line communication signal and averages the power line communication signal over time to generate an average signal. The comparator compares the average signal to the power line communication signal and generates a comparison signal. The sampling circuit samples the comparison signal according to a sample timing of a clock signal and generates a sampled signal. The decoder circuit decodes the sampled signal and generates a decoded output signal. The regulator circuit receives the power line communication signal and generates supply voltage to power the comparator, the sampling circuit, and the decoder circuit.

Power line communication signal detector

Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. An integrated LED and driver circuit includes one or more LEDs of a LED zone and one or more driver circuits integrated on a substrate in a single package with the LED and driver circuit vertically stacked over a substrate. An addressing scheme configures addresses of the driver circuits using address lines that connect between adjacent driver circuits. Control data is provided to the driver circuits via a power line communication signal that provides both a supply voltage and digital data modulated onto the supply voltage.

Power line communication in a display device with distributed driver circuits

Display device with single package light emitting diode and driver circuit

Embodiments relate to a display device that includes a control circuit, an array of light emitting diode (LED) zones, and an array of driver circuits that are distributed in the display area. The driver circuits are arranged in groups that are coupled to each other and to the control circuit in a serial communication chain via serial communication lines. The group of driver circuits are also coupled in parallel to a shared multi-wire command line that provides a high-speed interface for providing the driver control signals from the control circuit. The control circuit may furthermore issue readback commands to the driver circuits via the shared multi-wire command line or the serial communication chain. In response to the commands, the driver circuits provide readback data via a readback line through the serial communication chain or via parallel connections from the driver circuits.

Display device with distributed driver circuits and shared multi-wire communication interface for dimming data

A display device includes a control circuit, an array of LED zones, and an array of driver circuits that are distributed in the display area. The driver circuits are arranged in groups that are connected in a serial chain by a set of communication lines. The group of driver circuits are configurable between a serial communication mode and a parallel communication mode. In the serial communication mode, each driver circuit receives an incoming signal on an input pin, processes the signal through serial communication logic to generate an outgoing signal, and outputs the outgoing signal to an output pin such that the driver circuits serially process the incoming signal. In the parallel communication mode, each driver circuit transfers the incoming signal from the input pin to the output pin bypassing the serial communication logic such that all driver circuits in the group can process the incoming signal in parallel.

Display device with distributed driver circuits switchable between serial and parallel communication modes

A silicon-on-insulator device structure having a silicon-on-insulator substrate, a transistor and a control transistor is provided. The transistor and the control transistor are disposed on the silicon-on-insulator substrate. The transistor and the control transistor share a common source region. The drain region of the transistor is electrically connected to the main body of the transistor. By forming of a control transistor between the source terminal and the main body of the transistor and switching the control transistor on or off on demand, the silicon-on-insulator device embodies the advantages of both floating-body effect and body-tied characteristic.

Growing community of inventors

Taipei, Taiwan

Li-Lun Chi