New 120 Hz Fine High Definition (fHD) Touch and Display Driver Integration for Next-Generation Smartphone LCD Displays

Touch Features

Multi-touch coordinate sensing without ghost points
– Voltage correction circuits enhance the sensitivity (supporting automatic calibration)

RISC CPU optimized for capacitive sensing and other human interactions

Supports up to 18×32 electrodes to provide the maximum accuracy
– Analog front ends (AFEs) support up to 576 receiver pads

Supports I2C and SPI with OMNIVISION TouchComm protocol for communication with the host

Proprietary intelligent algorithms, run locally on the CPU facilitates removal of mechanical buttons and switches, which increases reliability and reduces footprint and component cost

Low power sensing modes enable wake-up gesture functionality

Face-detect proximity capability reduces cost by eliminating the need for other proximity sensing components

Display synchronization and increased voltage capability enable improved performance over discrete touch implementations

Programmable sensing speed of 50 kHz to 250 kHz to minimize noise interference

Includes support to control segmented VCOM in-cell touch scanning circuits and enable ultra-thin, low cost integrated sensing schemes

High signal-to-noise ratio (SNR) touch AFE improves touch performance

120/60 Hz touch sensing

Low power wake-up gesture (LPWG)

Display Features

16.777M colors (24 bpp data format) single chip driver for a 256-grayscale TFT with a resolution of 900 RGB x 2100-dot graphics (with power supply circuits and supporting amorphous silicon (a-Si) panel)

4-lane/1-port MIPI DSI-2 D option interface for highspeed and low power transmission in both directions with low EMI noise (DSI-2 1.0, D-PHY1.1, DCS 1.2)

3-trio/1-port MIPI DSI-2 C option interface for more high-speed and low power transmission in both directions with fewer data lane number and low noise (DSI-2 1.0, C-PHY1.1, DCS 1.2)

MIPI DSI-2 D option video image display interface (see patents) with 1.3 Gbps/lane

MIPI DSI-2 C option video image display interface (see patents) with 1.1 Gsps/trio

Digital pixel processing
– Digital GAMMA for RGB separate gamma correction function
– Content adaptive backlight control (CABC)
– Color enhancement (CE) with color space management
– Sunlight readability enhancement (SRE) function
– Outline sharpness function
– Automatic contrast optimization (ACO) function
– Paper mode

Direct compressed data input
– 1/3 data compressed data input with one port
– Compression interface supports DSC (VESA) version 1.2 (DSC v1.2 has backward compatibility with DSC v1.1 to change the PPS setting)

Low-power consumption architecture (allowing direct input of the interface I/O power supply)
– Input power supply voltage:
    ○ Interface and logic power supply: IOVCC
    ○ Analog power supply: VSP, VSN
    ○ MIPI D-PHY power supply: DPHYVCC
    ○ MIPI C-PHY power supply: DPHYVCC