34.1: High‐Luminance and High‐Efficacy Electric‐Field‐Coupled Discharge Lamp for 18‐in. Diagonal LCD Backlighting

Hashimoto, K.; Ikeda, Y.; Shiga, Tomokazu; Igarashi, K.; Mikoshiba, S.; Takaku, S.; Nishiyama, Shusuke; Namura, Y.

doi:10.1889/1.1834136

Cited by 5 publications

(3 citation statements)

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“…We previously reported a capacity-coupled 5-MHz lamp for an 18-in.-diagonal LCD, 3 but the luminance was not satisfactory. Also, non-uniformity of the temperature along the tube axis resulted in uneven Hg distribution.…”

Section: Introductionmentioning

confidence: 98%

A 100,000‐cd/m² capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs

et al. 2002

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Abstract— A capacity‐coupled electrodeless Hg discharge lamp has been developed for LC TV backlightings. By applying sinusoidal voltages which are 180° out of phase with a pair of external electrodes, a luminous uniformity of over 84% is attained in two types of lamps whose lengths are 190 and 390 mm. Luminance, efficacy, and input power to the lamp are 114,000 cd/m2, 35 lm/W, and 21.5 W when the 390‐mm lamp is driven at 5 MHz. With a frequency below 1.1 MHz, eight 390‐mm lamps, connected in parallel to one another without external ballast impedance, can be driven by using a single inverter.

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Section: Introductionmentioning

confidence: 98%

A 100,000‐cd/m² capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs

et al. 2002

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“…The most conventional light sources include CCFL. Recently, the EEFL, a fluorescent lamps without cold cathode, was introduced as a new light source for LCD backlighting [1,2]. The electrode structures of the CCFL and EEFL are shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

P‐38 Discharge Characteristics of External Electrode Fluorescent Lamps (EEFLs) for LCD Backlighting Application

Lee

Kim

Lim

2002

Symp Digest of Tech Papers

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The discharge characteristics of the external electrode fluorescent lamps (EEFL) depending on the widths of the external electrodes were evaluated and compared with that of the cold cathode fluorescent lamps (CCFL). The conventional inverter was used for driving EEFL and CCFL. The luminance of the EEFL with 20mm of external electrode width and CCFL at 12V of inverter input voltage were 22,000 cd/m 2 and 25,500 cd/m 2 , respectively. The luminance and efficiency of the EEFL is similar to that of CCFL or CEFL. The life time of EEFL is expected to be much longer than that of CCFL or CEFL so that the EEFL could be more useful as the lamps for LCD backlighting.

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“…The generated UV light will be absorbed to the phosphor, and the visible white light can be generated. The external electrode was attached to the external surface of the bottom plate in order to reduce the firing voltage of the FPLS [4] .…”

Section: Introductionmentioning

confidence: 99%

43.3: Flat Panel Light Source and High Power Inverter for LCD Backlight Application

Hur

Kim

Lim

2000

Symp Digest of Tech Papers

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34.1: High‐Luminance and High‐Efficacy Electric‐Field‐Coupled Discharge Lamp for 18‐in. Diagonal LCD Backlighting

Cited by 5 publications

References 1 publication

A 100,000‐cd/m² capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs

A 100,000‐cd/m² capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs

P‐38 Discharge Characteristics of External Electrode Fluorescent Lamps (EEFLs) for LCD Backlighting Application

43.3: Flat Panel Light Source and High Power Inverter for LCD Backlight Application

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34.1: High‐Luminance and High‐Efficacy Electric‐Field‐Coupled Discharge Lamp for 18‐in. Diagonal LCD Backlighting

Cited by 5 publications

References 1 publication

A 100,000‐cd/m2 capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs

A 100,000‐cd/m2 capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs

P‐38 Discharge Characteristics of External Electrode Fluorescent Lamps (EEFLs) for LCD Backlighting Application

43.3: Flat Panel Light Source and High Power Inverter for LCD Backlight Application

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Product

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A 100,000‐cd/m² capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs

A 100,000‐cd/m² capacity‐coupled electrodeless discharge backlight with high efficacy for LC TVs