Young-hun Lee

An Integrated LDI with Readout Function for Touch-Sensor-Embedded Display Panels

An integrated mobile LDI with readout function is designed for touch sensor embedded display panels. This device not only drives the display panel but also senses either charge signals or current signals from the TFT sensor array with 8b resolution. The 22 times 1.8mm2 chip consumes 24mW, with 3mW required for the readout function

43.2: A 400Mbps/ch SiDP Receiver for Mobile TFT-LCD Driver IC

A high speed serial interface receiver is realized in a 0.18um high voltage CMOS technology for a mobile 24-bit hVGA TFT-LCD driver (LDI) IC. The type of serial interface implemented is called Simple Display Port (SiDP) and is intended to replace the legacy RGB interface in the LDI ICs. The receiver consists of one clock and two data channels, and thereby reduces the number of signal lines going through the hinge of a mobile phone from 28 down to 6. All channels conform to Sub Low-Voltage Differential Signaling (SubLVDS) convention. The total transfer rate can be up to 800Mbps for two data channel. The current consumption was 5.4mA at the data rate of 600Mbps.

A 16.7M Color VGA Display Driver IC with Partial Graphic RAM and 500Mb/s/ch Serial Interface for Mobile a-Si TFT-LCDs

A single-chip 16.7M color VGA display driver IC featuring partial graphic RAM and 500Mb/s/ch high-speed serial interface has been developed. It pairs with a 1.98-inch mobile VGA amorphous-silicon TFT-LCD panel with 400 pixels/in. The IC has been fabricated in a 0.18 mum triple-well CMOS process with high-voltage transistors and occupies 23.0 times 2.5 mm2. The chip has two supplies, 1.8 and 2.75V, and uses a total of 45mW.