Design of a multi-channel true flat fluorescent lamp for avionic AM-LCD backlighting

Anandan, M.; Ketchum, D.; Etlinger, H.; Kirker, R.; Carr, W.N.

doi:10.1109/16.278502

Cited by 8 publications

(6 citation statements)

References 4 publications

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“…The distance can be determined so that it is long enough not to induce a large diffusion loss, but short enough not to result in dark region near the walls. Using hollow electrodes as the end electrodes [8] is another possible solution to this problem. Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of Dual Coplanar Electrodes on Mercury-Free Flat Fluorescent Lamps for Liquid Crystal Display

Park

Lee

Kim

et al. 2006

J. Display Technol.

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The effects of dual coplanar electrodes on a Hg-free flat fluorescent lamp were studied. For a dual coplanar lamp, brightness and efficacy were improved by 80% compared to a conventional coplanar lamp. The improvement is regarded as the result of reduced diffusion loss and the effective usage of the discharge volume in the dual coplanar lamps. An efficacy of 35.9 lm/w (14900 cd/m 2) was achieved for 250 torr of a Xe(30%)/Ne(70%) gas mixture, by a 20-kHz ac pulse driving.

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Section: Resultsmentioning

confidence: 99%

Effect of Dual Coplanar Electrodes on Mercury-Free Flat Fluorescent Lamps for Liquid Crystal Display

Park

Lee

Kim

et al. 2006

J. Display Technol.

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“…From the 1990s, as the LCD industry grew and the size of display became larger, intense efforts on the development of FFLs for LCD BLUs began. 13 The first version of the FFL in this period was a serpentine-type FFL, where internal electrodes were inserted into both ends of the serpentine channels. There is an advantage of this electrode configuration for the serpentine structure that the positive column becomes very long, which is a favorable condition for obtaining higher light-generating efficiency.…”

Section: After the 1990smentioning

confidence: 99%

Spectroscopic analysis of the non‐circular external electrode fluorescent lamp for large‐sized LCD backlight applications

Ko¹

2010

J Soc Info Display

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Abstract— The spectroscopic analysis of the external electrode fluorescent lamp (EEFL) having non‐circular cross sections was carried out in order to obtain insight into the discharge condition confined in this unusual discharge space. The emitting spectra of EEFLs with and without phosphor layers were investigated as a function of the measurement position and/or time. It was found that the argon (Ar) emission was intense when the lamp was turned on and decreased rapidly as the Hg emission lines got stronger. The intensities of visible lines from mercury atoms were measured as a function of position along the direction perpendicular to the channel axis. It was found that the positive column does not spread in the entire discharge space but was contracted at the center of the channel. This result was discussed in relation to the ionization process occurring in the low‐pressure discharge lamps. In addition, the correlation between the cross‐sectional shape and the backlight efficiency was investigated, from which optimized shape parameters could be derived.

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“…The electrodes run along the ribs, with the electrode separation being almost equal to the channel width. Discharges occur laterally across the channels, not longitudinally along the channels [2]. For the present experiments, the electrodes are placed outside of the front glass plate, allowing various kinds of measurements including discharge stability and effects of electrode separation.…”

Section: Lamp Structurementioning

confidence: 99%

47.3: Lateral Multi‐Channel Flat Discharge Fluorescent Lamp for LC‐TV Backlight

Shiga

Mikoshiba

et al. 2004

Symp Digest of Tech Papers

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An experimental, 32‐in.‐diagonal Hg flat discharge fluorescent lamp was developed for an LC‐TV backlight. An electron density in the lamp is 1/20 and VUV phosphor load is 1/160 of the conventional EEFLs. With a proper lamp design, current density at the electrodes may be reduced to 1/3 of the EEFLs. These ensure longer lifetime and higher efficacy. The ignition voltage is relatively low at 700V.

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Design of a multi-channel true flat fluorescent lamp for avionic AM-LCD backlighting

Cited by 8 publications

References 4 publications

Effect of Dual Coplanar Electrodes on Mercury-Free Flat Fluorescent Lamps for Liquid Crystal Display

Effect of Dual Coplanar Electrodes on Mercury-Free Flat Fluorescent Lamps for Liquid Crystal Display

Spectroscopic analysis of the non‐circular external electrode fluorescent lamp for large‐sized LCD backlight applications

47.3: Lateral Multi‐Channel Flat Discharge Fluorescent Lamp for LC‐TV Backlight

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