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Plasma display module

A plasma and display technology, applied to static indicators, instruments, etc., can solve problems such as transformers prone to noise, and achieve the effects of reducing voltage fluctuations, eliminating noise, and stabilizing display

Inactive Publication Date: 2007-11-14
FUJITSU HITACHI PLASMA DISPLAY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, plasma displays are prone to noise from transformers, etc., due to the flow of large peak currents.

Method used

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Embodiment Construction

[0055] The configuration and control method of the plasma display module according to the present invention will be described with reference to FIG. 1 . The plasma display module according to the present invention has substantially the same configuration as the plasma display module shown in FIG. 6 . That is, the plasma display module according to the present invention includes a plasma display panel 1 , a Y electrode driver circuit 2 , an X electrode driver circuit 3 , an address electrode driver circuit 4 , a control circuit 5 , and a power supply circuit 6 .

[0056] The Y electrode driving circuit 2 and the X electrode driving circuit 3 can generate sustain discharge pulses for the duration Ts shown in FIG. 8 .

[0057] In the present invention, in the Y electrode drive circuit 2 and the X electrode drive circuit 3, an electrolytic capacitor Cd and / or a film capacitor Cf and / or a ceramic capacitor Cc (not shown in the figure) are combined, and the high-speed sustaining Di...

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Abstract

In a plasma display module, the cost and size of a power supply circuit are reduced. A plasma display module comprising a plasma display panel (1) having an address electrode, which selects the address of a display pixel, a Y-electrode, which selects a display pixel, and an X-electrode which applies the sustain discharge voltage of a selected pixel; an address electrode drive circuit (4); a Y-electrode drive circuit (2); an X-electrode drive circuit (3); a control circuit (5); and a power supply circuit (6); wherein the power supply circuit (6) includes, between a discharge sustain voltage line (Vs) and a ground (G), an electric field capacitor (61) and an electric double-layer capacitor (62) the capacitance of which can accumulate a charge that is 20 or more times the discharge current of one frame, and wherein each of the Y-electrode and X-electrode drive circuits (2,3) includes, between the discharge sustain voltage line (Vs) and the ground (G), a film capacitor (Cf), a ceramic capacitor (not shown) and / or an electric field capacitor (Cd) used for flowing a high frequency current.

Description

technical field [0001] The invention relates to a plasma display module, in particular to a power supply circuit for display. Background technique [0002] Plasma displays are large and large-capacity flat-panel displays. Although the market is expanding as flat-panel displays for home use, they require power consumption, display quality, and cost at the same level as CRTs. [0003] A plasma display is a pulse-driven device, and in particular, a large spike-shaped current flows for display discharge. In order to perform stable display and to maintain display brightness at a predetermined value, it is necessary to stabilize the power supply voltage, and a high-power element for passing a peak current is required in the power supply circuit. In addition, since a large peak current flows in a plasma display, noise is likely to be generated from a transformer or the like. [0004] The configuration and control method of a conventional AC drive type plasma display module will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/28G09G3/20G09G3/288G09G3/296G09G3/298
CPCG09G3/296G09G2330/02
Inventor 大塚晃佐佐木孝高木彰浩
Owner FUJITSU HITACHI PLASMA DISPLAY LTD