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STMicroelectronics has announced successful development of its first column-driver ICs. The STD8420C and STD8420A are the first chips in ST’s new LCD driver family. Widely used in computer monitors, LCDs (Liquid Crystal Displays) are increasingly being used for flat-screen TVs as large LCD-panel prices continue to fall, and earlier performance limitations. |
Demand for large-size LCD TVs is growing rapidly, especially in countries such as Korea, China, Taiwan and Japan, with the establishment of HDTV (high-definition TV) services. Many consumers are upgrading from CRT (Cathode Ray Tube) television sets.
The device uses PPDS® (Point-to-Point Differential Signaling) display technology to dramatically simplify the LCD intra-panel interconnect and to reduce the total number of column-driver signals required, aiding manufacturers by enabling a physically smaller bezel around the TV screen while providing cinema-quality display performance. The use of this technology in the new LCD driver complements ST’s long experience and expertise in display systems and technologies, including computer monitors, TV applications, mobile displays, plasma screens, small-size LCD and OLED (Organic LED) displays.
The STD8420x is being produced in a leading-edge process technology, developed by ST specifically for this application. Key features of the STD8420C include: 414/420 outputs, PPDS interface compatible, support for independent digital gamma control of each RGB color, support for Dot and N-line inversion drive schemes, operation over a wide output voltage range, and 1024 gray levels per output built from internal 12-bit linear digital-to-analog converters. The STD8420A incorporates all the features of the STD8420C with the exception of output gray levels, which are limited to 256 steps.
For more information on the full range of STMicroelectronics products available from Anglia please call +44 (0)1945 474747 or email info@anglia.com
