37.3: Mercury‐Free, Simple‐Stuctured Flat Discharge LCD Backlights Ranging from 0.5 to 5.2‐in. Diagonals

Abstract

Mercury‐free flat discharge lamps with diagonal sizes ranging from 5.0 to 5.2 inches have been developed for LCD backlights. The lamps have simple structures with insulated electrodes. Uniform discharges are obtained by adjusting drive pulse voltage and waveforms. As lamp diagonal becomes larger, luminance and efficacy increa‐se, and the dimming can be varied in wider range.

Recent research and development of VUV phosphors for a mercury-free lamp

“…Notwithstanding, the organic EL has a limited life span for practical application. Therefore, the importance of mercury-free fluorescent lamps as flat panel lighting is increasing [3].…”

“…The mercury-free fluorescent lamp is fundamentally a Xedischarge lamp with a phosphor layer inside the flat glass [3]. This emission mechanism, based on Xe-gas discharge, has already been utilized in plasma display panels (PDPs).…”

A New Xenon Plasma Flat Fluorescent Lamp Enhanced with MgO Nano-Crystals for Liquid Crystal Display Applications

“…In addition, the xenon lamp does not contain mercury gas, which is environmentally hazardous [1,2]. In spite of these advantages, there is a barrier to its imminent commercialization as an liquid crystal display (LCD) backlight.…”

P‐98: Current‐Sourced Push‐Pull Inverter for Mercury‐Free Flat Fluorescent Lamp Driving

“…Recently, research interest toward developing a high luminance and high luminous efficiency mercury-free flat light sources has gained momentum [1][2][3][4][5][6]. The luminance and luminous efficacy of the lamp has been significantly improved through the research on the gas composition and lamp geometry variations [3,6].…”