Prilit Optronics, Inc.

Himax Technologies, Inc.

Fa-Ming Chen

Biing-Seng Wu

Mao-Hsiung Kuo

Chien-Pin Chen

Yu-Chu Yang

Po-Hsien Tsai

Shin-Hung Chen

A LED sensing system and a display panel sensing system are disclosed. The LED sensing system comprises LEDs and a driver. The LEDs are arranged in a LED array, and the driver is disposed on a central portion of the LED array and electrically connected to the LEDs respectively. The driver can receive an activation maintenance signal, and receive an input address, and turn on one of the LEDs corresponding to the input address, so as to obtain a magnitude of a voltage of the LED corresponding to the input address for determining performance of the LED and a yield rate of the LED array.

LED sensing system and display panel sensing system

A micro light-emitting diode (microLED) display panel includes microLEDs; a substrate for supporting the microLEDs, the substrate being divided into a plurality of sub-regions; and a plurality of chip-on-film (COF) packages mounted on surfaces of the sub-regions respectively, a plurality of drivers being disposed on the COF packages respectively.

MicroLED display panel

A microLED display panel includes a substrate being divided into a plurality of sub-regions for supporting microLEDs, and a plurality of drivers being correspondingly disposed on surfaces of the sub-regions respectively. The driver includes a low-dropout (LDO) regulator and a drive circuit. The LDO regulator receives a system power, according to which a regulated power is generated and provided for the drive circuit.

A data driver of a microLED display includes clock generators that generate pulse width modulation (PWM) clocks of corresponding primary colors respectively; counters that receive the PWM clocks of corresponding primary colors respectively and accordingly generate corresponding PWM signals; and comparators associated with corresponding data channels respectively for comparing a held data signal with the corresponding PWM signal, thereby generating a comparison result signal. In one embodiment, the data driver further includes switches configured to electrically short output nodes of channel amplifiers of corresponding primary colors respectively for testing uniformity of microLEDs of one color.

Data driver of a microLED display

A timing controller adapted to a flat display includes a voltage detecting circuit, a clock generator, a first multiplexer and a second multiplexer. The voltage detecting circuit detects a variation of an operating voltage and thus outputs a reset signal. The clock generator outputs a start signal and a first clock signal. The first multiplexer is controlled by the reset signal and coupled to the start signal and a constant voltage. The second multiplexer is controlled by the reset signal and coupled to the first clock signal and a second clock signal. A frequency of the second clock signal is obviously higher than a frequency of the first clock signal.

Flat display and timing controller thereof for neutralizing charges in liquid crystal capacitors upon shut down

A gate driver for driving a display device is disclosed. The gate driver, which includes: a first input buffer configured to for receiving a reference voltage and outputting a first buffered voltage, a control circuit configured to for outputting a plurality of scan starting signals and compensating starting signals, a plurality of compensating output buffers, and a plurality of scan output buffers. Each of the plurality of compensating output buffers is configured to respectively receive one of the compensating starting signals and respectively output a compensating signal, wherein, each compensating output buffer receives the first buffered voltage as power. Each of the plurality of scanning output buffers is configured to respectively receive one of the scan starting signals and output a scan signal.

Growing community of inventors

Tainan, Taiwan

Fa-Ming Chen