To achieve higher image quality in flat panel TVs, high-performance image transmission devices are now under development. The connection technology used to connect image transmission devices to display devices such as LCDs and PDPs is critical. In digital TVs, more data must be transmitted at higher speed than is the case with analog signals. However, higher transmission speed means increased noise generation rate. Therefore, if existing multi-conductor multi-pair cables are used, preventing noise requires the use of costly and bulky ferrite cores. Hitachi Cable's Twinax extra-fine coaxial cable, on the other hand, not only offers high-speed, high-capacity transmission capability, but also features a shield for each signal wire, thus eliminating the need for noise prevention measures such as the use of ferrite cores. Twinax is already used in the PDP and LCD products of leading manufacturers, and, for FPCs, can be substituted for the connection between a laptop computer's main unit and its display section.

Performance of the backlight is particularly important for achieving bright and vivid color reproduction on LCDs. The wires connected to the backlight must constantly carry a high voltage of 2 kV to 6 kV during operation, and an increased display size requires higher voltages. For LCDs used in digital equipment such as car navigation systems, digital cameras and mobile phones, wires for backlights are required to be smaller in diameter, more flexible, and more heat-resistant as products become smaller and thinner. Hitachi Cable provides high-performance wires for LCD backlights that are designed to withstand harsh operating conditions while being gentle on the environment.

Using digital connections such as DVI ensures better picture quality than using conventional analog video terminals when connecting a DVD player or other AV equipment to a digital TV. Especially with a home theater system and other similar systems, in which the AV equipment is usually installed away from the TV, digital connections with highly stable signal transmission are suitable. However, since DVI was originally developed and standardized for the connection of a PC to a monitor, it processes audio signals in an analog format. As digital audio signals have become common in recent years, HDMI (High-Definition Multimedia Interface) was standardized as a next-generation multimedia interface capable of handling both video and audio signals in digital formats while maintaining compatibility with DVI. Hitachi Cable plans to commercialize HDMI cables, especially those which allow long-distance signal transmission (7 m or more), and supply them to domestic and overseas manufacturers of AV equipment and set-top boxes.