High-luminous-efficacy structure for plasma tubes

Ishimoto, Manabu; Hirakawa, Hitoshi; Awamoto, Kenji; Shinohe, Koji; Yamada, Hitoshi; Yamasaki, Yosuke; Shinoda, Tsutae

doi:10.1889/1.2137632

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…At Fujitsu Laboratories, the luminous efficacy of 3.7 lm/W has been obtained by adding a high-voltage part in the front edge of sustain pulse [16]. Fujitsu Laboratories also reported 4.7 lm/W in the plasma tube which has three times the cell size of conventional PDPs and the design of sustain gap 0.4 mm [17], [18].…”

Section: B Technologies For High Luminous Efficacymentioning

confidence: 99%

“…Since the manufacturing unit is one glass tube, it can manufacture the small equipment and facilities for production. Since pixel size is large, about three times compared with the conventional PDPs, high luminous efficacy is theoretically expected [18]. So, even if it forms extra-large screen, the increase in power consumption can be suppressed.…”

Section: Technical Trend Of Enlargement Of Pdpmentioning

confidence: 99%

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Plasma display technologies for large area screen and cost reduction

Shinoda

Awamoto

2006

IEEE Trans. Plasma Sci.

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In this paper, the basic technologies of alternating current (ac) plasma display panel (PDP) and the next-generation technologies are described. The panel structure of reflective type and three electrodes with surface discharge, and the basic operation of address display-period separation (ADS) subfield method have been developed for PDP products, and these basic technologies have the capabilities which can respond to next-generation development, such as high luminous efficacy, low cost, and enlargement of the screen size. In the recent research, the technologies that provide three times the luminous efficacy comparing with that of latest PDP products and innovative manufacturing process technologies for drastic cost reduction have already been developed. How we install the new technologies in the products is an important subject. PDPs will keep advantages in a large screen flat panel display market by the technical development for the next-generation in each field.Index Terms-Address display-period separation (ADS) subfield method, alternating current plasma display panel (ac PDP), luminous efficacy, three-electrode with surface discharge.

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Section: B Technologies For High Luminous Efficacymentioning

confidence: 99%

Section: Technical Trend Of Enlargement Of Pdpmentioning

confidence: 99%

Plasma display technologies for large area screen and cost reduction

Shinoda

Awamoto

2006

IEEE Trans. Plasma Sci.

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“…Looking for general trends, it is concluded that phosphor saturation induces a substantial decrease in the efficacy in all cases with the exception of this work, where a special phosphor is applied, and Ref. 24, where the luminance level is such that phosphor saturation is not significant. The resemblance of the discharge physics for all these designs may be larger than expected at first sight, since a high sustain voltage presumably increases the discharge efficiency in all cases.…”

Section: Comparison Of High-efficacy Pdp Designsmentioning

confidence: 73%

“…Thus, for comparison, the effective Xe content of the low-pressure case, Ref. 24 in Table 2, can be taken as roughly halve the tabulated value. Thirdly, according to the above, the initial phase of the discharge is more efficient.…”

Section: Comparison Of High-efficacy Pdp Designsmentioning

confidence: 99%

High-efficiency PDP micro-discharges

Oversluizen¹,

Dekker²

2005

J. Soc. Inf. Display

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Abstract— High‐efficiency plasma‐display‐panel micro‐discharge characteristics will be discussed. An increase in the discharge efficiency for a higher‐Xe‐content gas mixture is well known. In this article, the interdependency of the capacitive design, the sustain voltage, and the Xe content will be discussed. A high panel efficacy was obtained, especially for the design and driving conditions that govern the development of a fast discharge. A fast discharge was observed for a higher discharge field at sustain voltages higher than 200 V. A +C‐buffer design, where the extra capacitance acts as a local on the panel power source that lowers the voltage decrease inherent to the discharge of the discharge capacitance upon firing, and efficient priming of the discharge at higher sustain frequency, also stimulates a fast‐discharge development. Apparently, a “high‐efficiency fast‐discharge mode” exists. It is proposed that in this mode the cathode sheath is not, or incompletely, formed during the increase in the discharge current, and the electric field in the discharge cell is dominated not by the space charges but by the externally applied voltage. The effective discharge field is lowered, resulting in a lower effective electron temperature and more efficient Xe excitation. Also, under a fast discharge build‐up condition, the electron‐heating efficiency increases, due to a decrease in the ion heating losses in the cathode sheath. In a 4‐in. color plasma‐display test panel, operating in a high‐efficiency discharge mode and containing a 50%Xe in Ne gas mixture, a panel efficacy of 5 lm/W concurrent with a luminance of 5000 cd/m2 was realized. This result was obtained at a sustain voltage of 260 V. These data compare favorably with alternative high‐efficacy panel design approaches.

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“…With the rectangular tube, the distance between discharge and the phosphor were closer and the solid angle from discharge to the phosphor layer is larger. With a 10% Xe discharge gas mixture, high luminous efficacy of 5.4 lm/W was achieved [3] .…”

Section: Fig4 Rectangular Tube and Luminous Efficacymentioning

confidence: 98%

34.2: Invited Paper: Development of 1m × 2m Plasma Tube Array PTA Technologies Ready for Ultra‐Large Film Display

Hirakawa¹,

Shinohe²,

Yamazaki³

et al. 2008

Symp Digest of Tech Papers

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The plasma tubes array is expected to realize the next generation of wall size display because of its wonderful characteristics such as ultra‐thin, light‐weight, flexible and low power consumption. We had successfully developed a prototype film display of 1m × 2m screen size which was consisted of 4 sub‐modules of 0.5m × 1m with the seam width under 1mm. The weight, thickness and power consumption of the film display were measured at 2.5kg, 1mm and 400W respectively.

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High-luminous-efficacy structure for plasma tubes

Cited by 8 publications

References 7 publications

Plasma display technologies for large area screen and cost reduction

Plasma display technologies for large area screen and cost reduction

High-efficiency PDP micro-discharges

34.2: Invited Paper: Development of 1m × 2m Plasma Tube Array PTA Technologies Ready for Ultra‐Large Film Display

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