CN100452279C

CN100452279C - Method for manufacturing plasma display panel

Info

Publication number: CN100452279C
Application number: CNB2006100796952A
Authority: CN
Inventors: 崔盛天
Original assignee: LG Electronics Nanjing Plasma Co Ltd
Current assignee: LG Electronics Nanjing Plasma Co Ltd
Priority date: 2005-07-18
Filing date: 2006-05-09
Publication date: 2009-01-14
Anticipated expiration: 2026-05-09
Also published as: KR20070010380A; CN1858883A; KR100726663B1

Abstract

The invention discloses a preparing method of plasma display panel, which comprises the following steps: forming scanning electrode and maintaining electrode on the upper part of front glass; setting upper limit voltage for scanning electrode or maintaining electrode; restoring electrode; forming electric dielectric layer for scanning electrode and maintaining electrode. The invention exerts voltage for front panel within specific time, which avoids insulating phenomenon in advance.

Description

The manufacture method of Plasmia indicating panel

One, technical field

The invention relates to Plasmia indicating panel, saying so in more detail a kind ofly applies the upper voltage limit of setting, the manufacture method of repairing the Plasmia indicating panel of incongruent electrode to the electrode that is formed at front panel.

Two, background technology

In general, in the Plasmia indicating panel, the spaced walls that is formed between prebasal plate and the metacoxal plate constitutes a unit cell, is filled with neon (Ne), helium (He) or charging and discharging gas as the mist (Ne+He) of neon and helium and the non-active gas that contains small amount of xenon (Xe) in each unit.When relying on high frequency voltage to discharge, non-active gas sends vacuum ultraviolet (Vacuum Ultraviolet rays) thereby makes the light-emitting phosphor display frame that is formed between spaced walls.Such Plasmia indicating panel is not only thin but also light, is the display unit of future generation that attracts tremendous attention.

Fig. 1 is the structural representation of existing Plasmia indicating panel.

As shown in Figure 1, Plasmia indicating panel by arranging scan electrode 102 on the front glass 101 of display frame and keeping that electrode 103 pairings form a plurality of keep the front panel 100 of electrode pair and forming arranging on the back surface glass 111 at the back side with above-mentioned a plurality of back faceplate panels 110 of keeping a plurality of addressing electrodes 113 that electrode pair intersects form with a determining deviation joined in parallel.

Front panel 100 comprises: keep the luminous scan electrode in unit 102 and keep electrode 103 thereby make to discharge mutually in the discharge cell, promptly have a pair of scan electrode 102 of transparency electrode (a) that is made of transparent ITO material and the bus electrode of being made by metal material (b) and keep electrode 103.Scan electrode 102 and keep electrode 103 restriction discharging currents is coated with on them and makes the dielectric layer 104 that insulate between electrode pair more than one.On upper dielectric layer 104, be more prone to the protective layer 105 of magnesium oxide (MgO) that has been formed with plated film for making discharging condition.

Rear board 110 is arranged with a plurality of discharge spaces, the strip of the formation discharge cell that promptly is arranged in parallel (perhaps well word shape) spaced walls 112.And carrying out address discharge, to send vacuum ultraviolet a plurality of addressing electrode 113 are corresponding spaced walls 112 parallel installations.To scribble when address discharge be the R that visible rays is sent in display frame on the upper strata of plate 110 in the back, G, B fluorophor 114.Form protection addressing electrode 113 bottom dielectrics 115 between addressing electrode 113 and the fluorophor 114.

Like this, when making Plasmia indicating panel, after plate formed electrode in front, the state of the electrode that control forms if incongruent part, for the purpose that it is repaired, carried out DC test to the electrode of front panel with this spline structure of Fig. 2.

In the existing front panel, after forming electrode, smear dielectric layer before, when being exposed to airborne two interelectrode distances and being 50um, in air, take place to destroy insulation, the decomposition voltage that causes causing discharge reduces in a large number, the minimum 150V that reaches.But when taking place to destroy the situation that insulate strong, electrode shape and dielectric on every side deform, even cause carrying out follow-up operation, the possibility that can not become excellent product increases.But electrode gap is destroyed insulation voltage and also will be reduced during less than the situation of design load.During this situation, if apply high voltage, will bring out electrode deformation and dielectric strain, so be difficult to apply high voltage.

Therefore, in present operation,, thereby, carry out next operation then by searching and repair the position that forms electrode gap below the design load to the direct voltage that applies between positive electrode about a large amount of 100V.At this moment, as shown in Figure 3, because the voltage waveform that applies as DC test merely connects dc voltage power supply in the regular hour, so there is the problem that can not accurately search and repair the part narrower than design load.

Three, summary of the invention

The manufacture method that the purpose of this invention is to provide a kind of Plasmia indicating panel, the following electrode of design load can easily be searched and repair to this method by the electrode application voltage to front panel, when making Plasmia indicating panel, thereby prevent to destroy insulation in advance, improve the actual output rate.

The objective of the invention is to be achieved through the following technical solutions:

A kind of manufacture method of Plasmia indicating panel is characterized in that it may further comprise the steps:

(a) stage that forms scan electrode and keep electrode on the top of front glass;

(b) to above-mentioned scan electrode or keep the stage that electrode applies the upper voltage limit of setting and repairs electrode;

(c) comprise above-mentioned front glass, form the stage of dielectric layer on above-mentioned scan electrode and the top of keeping electrode.

Here, (b) stage makes voltage rise to the upper voltage limit of setting according to certain gradient at the appointed time, and the afore mentioned rules time is 1 second～30 seconds.

Simultaneously, the voltage that (b) is applied in the stage is kept and be 1 second～10 seconds fall time.

The invention has the beneficial effects as follows: when making Plasmia indicating panel, at the appointed time,, can search and repair incongruent electrode at an easy rate lentamente to the scan electrode that is formed at front panel with keep the voltage that electrode applies prescribed level in advance.

Simultaneously, the present invention is after the Plasmia indicating panel manufacturing is finished, and interelectrode destruction insulation reduces, thereby can improve the effect of actual output rate.

Four, description of drawings

Fig. 1 is the structural representation of existing Plasmia indicating panel.

Fig. 2 is the schematic diagram of the front panel electrode structure of existing Plasmia indicating panel.

Fig. 3 is the schematic diagram of the voltage waveform that applies when checking the electrode of existing Plasmia indicating panel.

Fig. 4 is the schematic diagram of demonstration according to the inspection method of the front panel electrode of Plasmia indicating panel of the present invention.

The schematic diagram of the voltage waveform that Fig. 5 applies when being the electrode of checking according to Plasmia indicating panel of the present invention.

The description of symbols of major part in the accompanying drawing

202a, 203a: transparency electrode 202b, 203b: bus electrode

Five, embodiment

Below, the present invention is described in detail with reference to drawings and Examples.

Before Fig. 4, need to prove, be to keep the rear board of a plurality of addressing electrodes that electrode pair intersects to form and form with certain separation seal by a plurality of front panels of keeping electrode pair being installed and subtend being installed according to Plasmia indicating panel of the present invention.

With reference to Fig. 4, according in the Plasmia indicating panel of the present invention, front panel uses E-beam or sharp shooting method transparency electrode (ITO) 202a that is formed by indium oxide and tin oxide in the front glass top of display frame 200 plated film specific thicknesses, 203a.Form transparency electrode 202a, after the 203a, at transparency electrode 202a, 203a top lamination forms photoresist (Photo Resist), for example dry film photoresist (Dry FilmPhoto Resist).Then, the photomask that has formed AD HOC is placed the top of above-mentioned DFR, irradiates light makes the DFR sclerosis then, thereby and carries out etching and form scan electrode and keep electrode transparency electrode 202a, 203a.

Afterwards, at transparency electrode 202a, bus electrode 202b is formed at 203a top, 203b).Bus electrode 202b though the formation method of 203b has many kinds, only describes with a kind of example wherein, print photosensitive silver (Ag) coating by stencilization (Screen-printing) mode, identical with said method, form bus electrode 202b, 203b with exposure process.

Then, scan electrode with keep two electrodes of electrode on be connected voltage feeder 300 and apply certain voltage.At this moment, make a termination electrode ground connection of electrode, to other end electrode application voltage.Here, the voltage that applies to electrode is the upper voltage limit of setting in advance, and it rises lentamente with certain gradient at the appointed time.

Like this, if two voltages between the electrode are slowly increased, after forming electrode, trickle destruction insulation takes place in left trickle electrode substance between two electrodes so, and owing to heat burns.Simultaneously, two interelectrode width are during less than the situation of design load, as mentioned above, rely on trickle destruction insulation phenomenon and burned, finally correctly repair electrode and form.

The schematic diagram of the voltage waveform that Fig. 5 applies when checking according to the electrode of front panel of the present invention.The upper voltage limit of setting is divided between voltage first transition, voltage sustaining region, the voltage last transition.At this moment, the voltage first transition was optimal between 1 second～30 seconds, maintained 1 second with the voltage last transition between voltage sustaining region～10 seconds.

Different with the manufacture method of existing Plasmia indicating panel, even the state of incongruent electrode is not necessarily, select suitable voltage range also can accurately search and repair the electrode narrower than design load.

Promptly, after providing the electric current, voltage range of qualification, if two voltages between the electrode are increased, after the operation that forms electrode, make to be retained in two interelectrode trickle electrode substances (being called " residue ") and insulation fine to take place to destroy so than design load electrode narrower or unaccommodated shape.Thus,, thereby rely on the heat that is accompanied by to come combustion residue and electrode part, finally can form suitable electrode by the destruction insulation that between underproof two electrodes, produces.

Afterwards, if finished reparation to defective electrode, just by above-mentioned transparency electrode 202a, 203a and bus electrode 202b, the scan electrode that 203b forms and keep electrode and the dielectric agent is smeared on front glass 200 tops, carry out drying then, fire with about 500 ℃～600 ℃ temperature afterwards and form dielectric layer.

Afterwards, use CVD method, plating ion method or Vacuum Coating method etc. to form the diaphragm that forms by magnesium oxide (MgO), just finished the front panel of Plasmia indicating panel on the surface of dielectric layer.

As mentioned above, the staff of the technical field of the invention can implement other concrete form under the situation that does not change technological thought of the present invention or essential feature.

Therefore, all aspects of the above embodiment all are exemplary, and do not have limited.All changes or the deformation form that are drawn by equal notion all belong to scope of the present invention.

Claims

1, a kind of manufacture method of Plasmia indicating panel is characterized in that it may further comprise the steps:

(b) to above-mentioned scan electrode and keeping the stage that electrode applies the upper voltage limit of setting and repairs electrode; In 1 second～30 second time, made voltage rise to the upper voltage limit of setting according to gradient; The voltage that is applied in is kept and be 1 second～10 seconds fall time;