Plasma display device utilizing high-frequency preheating and plasma body discharging method

A plasma and high-frequency preheating technology, applied to static indicators, instruments, solid cathode components, etc., can solve problems such as weak vacuum ultraviolet light intensity, high manufacturing process requirements, and insufficient brightness of the display, and achieve increased density , improve the service life, good support effect

Inactive Publication Date: 2007-03-21
UNIV OF SCI & TECH OF CHINA
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The breakdown voltage of the gas discharge in the prior art is relatively high, so that the efficiency of the current driving circuit to generate plasma is low, and the intensity of the vacuum ultraviolet light is weak, resulting in insufficient luminance of the display
[0006] The plasma discharge method introduced in Chinese Patent No. 200410078947.0 and the display based on this method have complex structures and high manufacturing process requirements; in particular, this method still only uses DC glow discharge, thus failing to fundamentally reduce the breakdown voltage

Method used

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  • Plasma display device utilizing high-frequency preheating and plasma body discharging method
  • Plasma display device utilizing high-frequency preheating and plasma body discharging method
  • Plasma display device utilizing high-frequency preheating and plasma body discharging method

Examples

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Embodiment 1

[0023] Example 1: Plasma display using capacitive coupling for preheating

[0024] This embodiment is a typical three-electrode AC transmissive surface discharge plasma display. FIG. 1 shows a cross-sectional view of the discharge unit, and FIG. 2 is a schematic diagram of an equivalent circuit of a breakdown discharge and sustain discharge part of a discharge unit.

[0025] Referring to Figures 1 and 2: on the inner surface of the front substrate 1 made of high yield temperature glass, including glass of type PD200, there is a transparent film made of indium tin oxide (ITO) film with a thickness of 50 nanometers. Sustain electrodes 4a and 4b; a magnesium oxide dielectric layer 3a with a thickness of 20 micrometers is coated on the front substrate 1 and covers the surface of the sustain electrode 4; parallel to the front substrate 1, made of high yield temperature glass, including the model PD200 On the rear substrate 2 made of glass, facing towards the side of the sustain el...

Embodiment 2

[0031] Example 2: Plasma display using inductive coupling for preheating

[0032] This embodiment is a typical DC transmission surface discharge plasma display. 3 is a cross-sectional view of a discharge unit of a DC discharge plasma display based on inductive coupling; FIG. 4 is an equivalent circuit diagram of a discharge unit of a DC discharge plasma display based on inductive coupling.

[0033] Referring to FIGS. 3 and 4 : on the inner surface of the front substrate 1 made of glass with a high yield temperature, including the glass of PD200, there is a transparent sustain electrode 4 made of a silver-tin film with a thickness of 5 microns; A 10-micron ruthenium oxide dielectric layer 3a is coated on the front substrate 1 and covers the surface of the sustain electrode 4; parallel to the front substrate 1, a rear substrate 2 made of high yield temperature glass including PD200 glass On the side facing the sustain electrode 4, there is an address electrode 5 made of nickel ...

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Abstract

A plasma display and plasma discharge method uses high frequency and warm-up. In each discharge unit, ultrawide-band electrode on surface of barrier connects with electrical source of alternating current that produces frequency and is over 5KHz current. The maintain electrode and address seeking electrode respectively connects with intercourse or direct current electrical source that produces voltage more than 3 volt. The barrier is made up by glass mixed with metal oxide or metal power. Before breakdown and discharging, carry warm-up discharge to work gas of discharge space by add 5KHz-600MHz high frequency alternating current to ultrawide-band electrode. When maintain electrode is discharging, add 5KHz-600MHz high frequency alternating current to ultrawide-band electrode to assistant maintain discharge, thus , reduce breakdown voltage and enhance the stability and efficiency of discharge, increase luminescence efficiency, add glow of display with low wasting of power.

Description

Technical field: [0001] The invention belongs to plasma discharge technology, in particular to a plasma discharge method for preheating with high-frequency current and a plasma display. Background technique: [0002] According to "Electronic Display" (Tian Minbo, pages 117-128) published by Tsinghua University Press in 2001, although existing plasma displays have many different structures, the mechanism of their discharge light emission is the same, mainly by the following It consists of two basic processes: [0003] 1. Gas discharge process, that is, the inert gas generates discharge under the action of an external electrical signal, so that the atoms are excited and transition, and emit vacuum ultraviolet rays; [0004] 2. The luminescence process of the phosphor powder, that is, the process in which the ultraviolet rays generated by the gas discharge excite the photophosphor powder to emit visible light. [0005] Plasma display is an active light-emitting display. The c...

Claims

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Application Information

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IPC IPC(8): H01J17/49H01J17/04H01J17/20G09F9/313G09G3/28G09G3/292G09G3/293G09G3/294
Inventor 吴征威任海骏曹金涛仇志勇
Owner UNIV OF SCI & TECH OF CHINA
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