Inverter takes charge of multiple backlights

Global Display Solutions has a new Piezo inverter for multilamp backlight systems such as LCD TVs, high-brightness LCD solutions and head-rest displays.

Global Display Solutions has a new Piezo inverter for multilamp backlight systems such as LCD TVs, high-brightness LCD solutions and head-rest displays.

The Piezo inverter's balanced output is billed as "the first of its kind", giving exceptional uniformity and dimming performance.

GDS's Piezo inverter has improved reliability, safety and EMI performance compared with existing wire-wound component systems.

This is due to a reduced overall size and lower component count.

In addition, with the use of the Piezo inverter each lamp in multiple lamp systems will operate independently in the event of a single or multiple lamp failure, enabling continued operation of the display.

By using GDS's patented balanced output configuration, dimming ratios of better than 500:1 are easily achievable, which is at least five times the dimming range of conventional inverter systems (50-100:1 or less).

GDS's Piezo inverter also has the following advantages: it runs from a 12-24V DC supply; control circuitry and the low voltage power supply can be remotely mounted allowing better thermal management of the display (eg in head-rest displays); optical feedback provides uniform lamp output and can compensate for brightness variations caused by temperature changes in the display; the inverter is very compact; and improved safety and easier integration due to the elimination of high voltage connections.

GDS's new Piezo inverter, which is the ideal low-cost, efficient and reliable solution for LCD manufacturers to use in multilamp backlight systems, is just now entering the market following a lengthy R and D programme.

Back to top