Search Results

The Automotive ceramic gas turbine(CGT) is intended for operation at a turbine inlet temperature of 1,350°C and a turbine speed of 100,000 rpm. High temperature lubricating oil has to satisfy the heat-resistant and lubricity under a severe condition such as a bearing temperature of 300 °C, a reduction gear tooth pressure of 1 GPa and a peripheral speed of 120 m/s. The practical performance and durability tests of the high temperature lubricating oil based on polyolester were performed using a high-temperature and high speed bearing simulator and a high speed gear tester under the actual engine conditions.

Recently much attention has been focused on the electrical interconnection between Liquid Crystal Displays and Printed Circuit Boards. Chip-on-Glass technology is now available to dramatically reduce the number of interconnections. Hitachi has developed a Chip-on-Glass LCD for automotive application by applying flip chip bonding and thin film technologies resulting in a high reliability and high productivity display. Key technologies of the Chip-on-Glass display are discussed which includes many new processes. The results of reliability testing are reviewed and they reveal that the Chip-on-Glass LCD can be applied to the automotive market.