LCD controller-driver goes bigger than QVGA

The R63400 single-chip LCD controller-driver supports a resolution of 240 x 360 pixel, larger than QVGA, and display of 256K colours.

New from Renesas Technology Europe, the R63400 single-chip LCD controller-driver supports a resolution of 240 x 360 pixel, larger than QVGA, and display of 256K colours.

The controller offers an approximately 20% reduction in power consumption compared with the company's existing low-temperature polysilicon (LTPS) QVGA chipset and improves picture quality through new display functions.

It is designed for use with LTPS TFT colour LCD panels employed in mobile phones and PDAs.

The R63400 integrates 240-channel time-sharing source output with circuitry for transferring control signals to the panel's gate circuits and power supply circuitry in a single chip.

It incorporates 194.4Kbyte of on-chip graphics RAM and functions designed to reduce power consumption and increase battery life, such as high-speed burst RAM write, deep-standby and eight-colour display mode.

The controller offers a new display rotation function that makes it possible to flip the display 180 degrees without using the RGB interface to change the transfer sequence of the display data.

Therefore, display rotation is possible without having to add extra functionality to the display itself.

This makes it easier to design mobile phones that incorporate a display panel rotation feature.

Furthermore, an independent RGB gamma adjustment function allows separate gamma settings for the red, green and blue signal components.

This makes subtle adjustment of panel colours possible for improved display quality.

The R63400 has user-selectable settings for display characteristics such as the signals for interfacing with the panel, control timing and voltage levels.

This means it can be used with LTPS LCD panels from a wide variety of manufacturers as these often use differing gate control signal timings and voltage levels and therefore normally require a custom LCD driver.

Additional features provide support for a wide variety of systems include RGB 6, 16 and 18bit interfaces and a Vsync interface for moving image data.

System interfaces include high-speed 8, 9, 16 and 18bit interfaces and a clock-synchronous serial interface.

The controller's mounting method is chip on glass (COG).

Sample shipments will begin in May 2005.

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