CN101719452B

CN101719452B - Novel plasma display panel

Info

Publication number: CN101719452B
Application number: CN200810225765XA
Authority: CN
Inventors: 陈立国
Original assignee: Sichuan COC Display Devices Co Ltd
Current assignee: Sichuan COC Display Devices Co Ltd
Priority date: 2008-11-12
Filing date: 2008-11-12
Publication date: 2011-09-14
Anticipated expiration: 2028-11-12
Also published as: CN101719452A

Abstract

The invention discloses a novel plasma display panel comprising a front substrate and a rear substrate in sealing connection with the front substrate, wherein the front substrate is provided with a discharge electrode comprising a sustaining electrode and a scanning electrode which are extended in parallel; and one of the sustaining electrode and the scanning electrode is a metal electrode, and the other one is a transparent electrode and a bus electrode located on the transparent electrode. The plasma display panel of the utility model is capable of achieving lower firing voltage and higher lighting effect on the substrate at the same time.

Description

Novel plasma display panel

Technical field

The invention belongs to field of gas discharge, relate in particular to a kind of sparking electrode of novel plasma display panel.

Background technology

Ion display floater (plasma display panel, PDP) be the vacuum ultraviolet that produces 147nm when utilizing inert mixed gas such as He+Xe, Ne+Xe, He+Ne+Xe or He+Ne+Kr+Xe to discharge in the vacuum cavity, make light-emitting phosphor, to reach the writings and image that we visually can sense.

Fig. 1 is the perspective view of existing Plasmia indicating panel, and Fig. 2 is the structural representation of existing Plasmia indicating panel.With reference to Fig. 1, Fig. 2, the PDP discharge cell structure of three-electrode surface discharge structure is as follows: be formed at the scan electrode 11 on the prebasal plate 10 and keep electrode 12 and be made up of

transparency electrode

11a, 12a and

metal electrode

11b, 12b two parts usually.

Transparency electrode

11a, 12a adopt tin indium oxide (Indium-Tin-Oxide:ITO) as material usually, are formed on the prebasal plate 10.Metal electrode is a main material with chromium (Cr), silver (Ag) etc. usually.Be formed on transparency electrode 11a, the 12a, with the voltage drop of the transparency electrode in the minimizing work.Scan electrode 11 with keep electrode 12 parallel being formed on the prebasal plate; and be coated with one deck front medium layer 13 in the above; this dielectric layer can guarantee scan electrode 11 and keep resistivity between the electrode 12; simultaneously; can accumulate certain wall electric charge when plasma discharge, the upper surface of this front medium layer 13 also precipitates layer protecting film 14, and this diaphragm 14 can prevent that plasma discharge from producing destruction to preceding medium; and, can also improve the secondary discharge coefficient.Usually, the general material that uses of diaphragm is magnesium oxide (MgO).

Addressing electrode (A) 21 row are formed on the metacoxal plate 20.Medium behind covering one deck on addressing electrode 21.21 of addressing electrodes are formed insulation, simultaneously addressing electrode is formed protection.On the medium of back, make barrier 24.That barrier 24 is generally bar shaped or grid shape.Every or each grid formation display unit.Then, in the barrier cell, inject corresponding fluorophor paste 25.

Scan electrode 11 and to keep the corresponding spatial vertical of electrode 12 corresponding on addressing electrode 21 and the prebasal plate 10.Simultaneously, require each electrode corresponding with the groove of barrier 24.Just corresponding with the cell of giving out light.Prebasal plate 10, metacoxal plate 20 and barrier 24 are constituted airtight discharge space.In airtight space, pour the quantitative inert mixed gas that is used for gas discharge, in the work, discharge generation plasma-activated fluorophor between electrode, thus show various figures.

PDP panel on the market is mainly to adopt ITO and two kinds of PDP of no ITO (ITO less) now.Wherein, adopt the PDP of ITO to realize discharge with the edge-to-edge usually, the PDP panel that adopts ITO less is then to realize discharge between point-to-point.

Fig. 3 a and Fig. 3 b show the PDP panel that discharges between existing employing ITO electrode realization electrode.For the PDP panel that adopts this ITO electrode, because the conductivity of ITO self is lower, then need metal electrode to cooperate, increase the conductivity of sparking electrode, satisfy the PDP need of work.Technology and method that the method adopts mostly for existing PDP producer.But, because self resistance ratio of ITO electrode is bigger, expect desirable display effect, then the PDP power consumption is also bigger.

Fig. 4 shows the PDP panel that adopts ITO less structure.On the make do not utilize ITO to discharge, utilize metal electrode to make public electrode (comprise scan electrode and keep electrode), solved the big problem of sparking electrode impedance, but, the brightness of shielding has been produced bigger influence because metal electrode itself is opaque.Therefore, in structural design, generally carry out perforate, to improve the brightness of display screen in the centre of metal electrode.However, display brightness still has been subjected to many stopping.

In view of the pluses and minuses of the PDP that adopts the ITO structure, be necessary the novel plasma display panel that provides a kind of combination property good with the PDP that adopts ITO less structure.

Summary of the invention

The object of the present invention is to provide the good novel plasma display panel of a kind of combination property.

For this reason, novel plasma display panel of the present invention, comprise that prebasal plate reaches rear substrate sealed with it, has sparking electrode on the described prebasal plate, described sparking electrode comprise extend in parallel keep electrode and scan electrode, it is characterized in that described one of them that keep electrode and described scan electrode is metal electrode, another is transparency electrode and the bus electrode that is positioned on the described transparency electrode.

Preferably, above-mentioned scan electrode is a metal electrode.

Preferably, offer loophole in the above-mentioned metal electrode.

Preferably, curved, profile of tooth in the edge of above-mentioned metal electrode or rectangle.

Preferably, above-mentioned metal electrode is a silver electrode.

Preferably, above-mentioned transparency electrode is bar shaped or rectangle.

Preferably, the above-mentioned discharging gap of keeping between electrode and the described scan electrode is 50～100um.

According to novel plasma display panel of the present invention, one of them that keep electrode and scan electrode is metal electrode, and another is for transparency electrode and be positioned at bus electrode on the transparency electrode.Like this, then combine the advantage of PDP that adopts the ITO structure and the PDP that adopts ITO less structure, on substrate, obtain to obtain higher light efficiency in the lower firing voltage.In addition, in the preferred embodiment of invention, scan electrode adopts metal electrode, can improve sweep speed.

Be noted that the description and the following detailed description all are exemplary, are intended for the requested to provide further explanation of the invention.

Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.Below with reference to figure, other purpose, feature and effect of the present invention is described in further detail.

Description of drawings

Constitute this specification a part, be used for further understanding and of the present inventionly illustrate a plurality of preferred embodiments and be used for illustrating principle of the present invention with explanation.Among the figure:

Fig. 1 is the perspective exploded view of existing Plasmia indicating panel;

Fig. 2 is the structural representation of existing Plasmia indicating panel;

Fig. 3 a is the electrode structure layout viewing that adopts the PDP prebasal plate of ito transparent electrode, and Fig. 3 b is the vertical view of the PDP prebasal plate of existing employing ito transparent electrode;

Fig. 4 is the vertical view that adopts the PDP prebasal plate of ITO less structure;

Fig. 5 is according to the electrode structure layout viewing of prebasal plate of the present invention;

Fig. 6 a, Fig. 6 b and Fig. 6 c are the electrode of the prebasal plate plane graphs of arranging among the present invention, and wherein, Fig. 6 a shows the bar shaped that is shaped as of ito transparent electrode, and Fig. 6 b shows the zigzag that is shaped as of ito transparent electrode, and Fig. 6 c shows the rectangle that is shaped as of ito transparent electrode;

Fig. 7 is the structural representation according to Plasmia indicating panel of the present invention; And

Fig. 8 is the perspective exploded view according to Plasmia indicating panel of the present invention.

Embodiment

Below with reference to Fig. 5 to Fig. 8, structure and design according to plasma panel of the present invention are described in detail.

Fig. 5 is according to the electrode structure layout viewing of prebasal plate of the present invention.As shown in Figure 5, scan electrode 11 is made of the metal electrode 11b that has leaky hole 11k, keeps electrode 12 and is made of transparency electrode 12a and silver electrode (bus electrode) 12b that is positioned on the transparency electrode 12a.Wherein, the arc protuberance of the discharge portion of scan electrode for forming from the whole piece metal electrode.And silver electrode 12b can improve the efficient of scanning to reduce the voltage drop of transparency electrode 12a in the PDP work.

Fig. 6 a, Fig. 6 b and Fig. 6 c are the electrode of the prebasal plate plane graphs of arranging among the present invention.Shown in Fig. 6 a, the transparency electrode 12a that keeps electrode 12 is a strip.Shown in Fig. 6 b, the transparency electrode 12b that keeps electrode 12 is a zigzag.Shown in Fig. 6 c, the transparency electrode 12b that keeps electrode 12 is a rectangle, and each rectangle 12a provides electric current by bus electrode 12b.

Fig. 7 is the structural representation according to Plasmia indicating panel of the present invention.Wherein, form discharge between the transparency electrode 12a of the tip of metal electrode 11 and scan electrode 12, wherein, the minimum clearance between metal electrode 11 and the transparency electrode 12a is discharging gap, and this discharging gap can maintain 5～100um.

Fig. 8 is the perspective exploded view according to Plasmia indicating panel of the present invention.As shown in the figure, the characteristics of plasma panel of the present invention are that when making scan electrode 11 and keeping electrode 12, employing metal electrode and ITO electrode match, and realize discharging between electrode.Wherein, it is right that the scan electrode 11 of prebasal plate and the addressing electrode 21 of keeping electrode 12 and metacoxal plate form sparking electrodes, complements each other to form discharge cell, excites the working gas discharge, activated phosphor layer, display image.

Below transparency electrode in the Plasmia indicating panel of the present invention and metal electrode are described.The main body of transparency electrode is tin indium oxide (Indium-Tin-Oxide:ITO), have the good transmitance and the characteristic of conduction, because the resistance that himself exists is bigger, the speed that electric current passes through in the work is slower, has influenced sweep speed as the sparking electrode of keeping electrode for the ITO electrode.Therefore, need on the ITO electrode, enclose a metal electrode to keep the pressure drop of electrode in the minimizing work.Scan electrode then adopts metal electrode to be made, wherein, metal electrode has guaranteed conductance on the one hand, stops for the light that PDP is not sent produces on the other hand, therefore need make the electrode small opening at the corresponding position of luminescence unit, to guarantee higher transmittance.

Obviously, according to Plasmia indicating panel of the present invention, the PDP panel that has the ITO structure with routine is compared, and the present invention has the fast characteristics of sweep speed.Compare with the PDP panel of the ITO less mechanism of routine, the present invention has high permeability, the high characteristics of brightness.

According to novel plasma display panel of the present invention, one of them that keep electrode and scan electrode is metal electrode, and another is for transparency electrode and be positioned at bus electrode on the transparency electrode.Like this, then combine the advantage of PDP that adopts the ITO structure and the PDP that adopts ITO less structure, on substrate, obtain to obtain higher light efficiency in the lower firing voltage.In addition, in a preferred embodiment of the invention, scan electrode adopts metal electrode, can improve sweep speed.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. novel plasma display panel comprises prebasal plate and rear substrate sealed with it, has sparking electrode on the described prebasal plate, described sparking electrode comprise extend in parallel keep electrode and scan electrode, it is characterized in that,

Described scan electrode is a metal electrode, and the described electrode of keeping is transparency electrode and the bus electrode that is positioned on the described transparency electrode.

2. novel plasma display panel according to claim 1 is characterized in that, offers loophole in the described metal electrode.

3. novel plasma display panel according to claim 1 is characterized in that,

The edge of described metal electrode is curved, profile of tooth or rectangle.

4. novel plasma display panel according to claim 1 is characterized in that,

Described metal electrode is a silver electrode.

5. novel plasma display panel according to claim 1 is characterized in that,

Described transparency electrode is rectangular.

6. according to each described novel plasma display panel in the claim 1 to 5, it is characterized in that,

The described discharging gap of keeping between electrode and the described scan electrode is 50um～100um.

7. novel plasma display panel according to claim 1 is characterized in that described transparency electrode is bar shaped.