CN100373525C

CN100373525C - AC plasma display device

Info

Publication number: CN100373525C
Application number: CNB2004100678849A
Authority: CN
Inventors: 朴宰范
Original assignee: LG Electronics Nanjing Display Co Ltd
Current assignee: LG Electronics Nanjing Display Co Ltd
Priority date: 2004-11-05
Filing date: 2004-11-05
Publication date: 2008-03-05
Anticipated expiration: 2024-11-05
Also published as: CN1770365A

Abstract

The present invention relates to an AC plasma display, which comprises an upper plate and a lower plate, wherein the upper plate is provided with a pair of transparent maintaining electrodes, and the lower plate is provided with electrodes crossed with the transparent maintaining electrodes. Because the transparent maintaining electrodes removing the crossed part with the partition wall used for dividing a battery of an AC plasma display, the present invention can reduce the area of each electrode on the upper plate, reduce the power consumption and the discharging electrical current, and enhance the discharging efficiency.

Description

AC plasma display

[technical field]

The invention relates to AC plasma display, in more detail, exactly about a kind of area that can dwindle each electrode of upper plate, reduce power consumption, reduce discharging current, improve the plasma display of discharging efficiency.

[background technology]

Usually the ultraviolet ray excited fluorophor of 147nm that produces when utilizing He+Xe or Ne+Xe noble gas discharge of plasma display (Plasma Display Panel: hereinafter to be referred as PDP) is realized luminously, demonstrates the portrait that comprises literal or image.

So not only easier ultra-thinization of realization of PDP and maximization, but also have picture more clear, can carry out advantages such as low voltage drive, life-span are long.

In present gyp PDP, most discharging efficiency is 1 ~ 1.5lm/W, and the discharging efficiency of a part of experimental PD P can reach 2.0lm/W.

From structural improvement, the raising of discharging efficiency is owing to increased the content (in common 14%) of Xe gas in the gas that PDP uses.

On the other hand, the increase of Xe gas has brought puncture voltage (Breakdown) between each electrode of upper plate and has kept the shortcoming that (Sustain) voltage rises, even if in driving, because time dilation (Time delay) problem that discharge igniting (Discharge Ignition) is delayed also can take place in the lifting of cooling effect (Coolingeffect).

In order to solve such problem, developing the PDP that anodal light beam district is set, anodal light beam district mainly produces under the situation of discharge by (pass) having more than the 300um, and its discharging efficiency is higher than 1 ~ 2lm/W in negative pole (NegativeGlow) zone, reaches 7lm/W.

Therefore, PDP with anodal light beam district is in order to enlarge anodal light beam district, in the PDP gas-bearing formation, make the scan electrode in the upper plate and keep interelectrode interval (=d1) (for example, in 0.8lmm pixel pitch standard, interval between ITO reaches more than the 300um) maximization, make the upper plate scan electrode or keep electrode and the lower plate addressing electrode between the interval (=d2) remain on d1 the state of d2, in the addressing electrode of keeping interim one of them and lower plate at upper plate two electrodes, begin discharge, and move to other electrodes of upper plate.

Therefore, has the PDP discharge ionization voltage in anodal light beam district and keep the common PDP of voltage ratio and want high.

Fig. 1 a to Fig. 1 c is used for PDP discharge beginning with anodal light beam district of mean level (Positive Column) and keeps the concept map that describes, in the PDP upper plate 10, scan electrode 11 is the 1st spacing d1 with the spacing of keeping electrode 12, and lower plate 30 is the 2nd spacing d2 with the spacing of upper plate.

In lower plate, addressing electrode 21 is with scan electrode 11 and keep electrode 12 and be oppositely arranged.

Below the PDP discharge with anodal light beam district is begun and keeps to describe.

At first as shown in Figure 1a, interim in reset (reset) phase and addressing (adrress) of the PDP with the anodal light beam of level district, scan electrode 11 is assembled negative electrical charges, and addressing electrode 21 is assembled positive charges.

At this moment, if scan electrode 11 has been approved back bias voltage, upper plate two distance between electrodes d1 big apart from d2 than between the upper and lower plates just so is so carry out more weak plasma discharge between scan electrode 11 and addressing electrode 21.

Then, as shown in the figure, utilize scan electrode 11 and keep voltage difference between the electrode 12, electronics is to keeping electrode diffusion, and forms anodal light beam district 32, utilizes the initial stage plasma discharge, anodal light beam district is present between the preceding lower plate, so can make anodal light beam district realize maximization.

Be placed at last among Fig. 1 c, when the diffusion in anodal light beam district 32 finishes,, eliminated scan electrode 11 and kept voltage difference between the electrode 12 by assembling the electric charge of opposite polarity.

Therefore, electronics penetrates decays, and the polarity of each anodal wall electric charge has become negative pole or neutrality.

Fig. 2 is the sectional view with the interchange PDP upper plate in existing anodal light beam district.In upper plate electrode gas-bearing formation with the interchange PDP that forms around spaced walls 50 patterns, scan electrode 11 and keep be spaced apart " d1 " of electrode 12, two electrodes are separately positioned on the

lateral surface

91,92 of spaced walls both sides.

And described scan electrode 11 with keep electrode 12 and be connected with each

bus electrode

71,72.

As mentioned above, the interchange PDP with anodal light beam district exists the upper plate scan electrode and keeps shortcomings such as the area of electrode is big, power consumption increase.

[summary of the invention]

The present invention arises at the historic moment in order to solve described problem.The objective of the invention is to provide a kind of area that can dwindle each electrode of upper plate, reduce power consumption, reduce discharging current, improve the plasma display of discharging efficiency.

In order to realize described purpose, plasma display provided by the invention has following characteristics: comprised upper plate and lower plate, in upper plate, be provided with bus electrode, connect scan electrode on the bus electrode or keep electrode, in lower plate, be provided with and the bus electrode address electrodes intersecting, described scan electrode with keep electrode and removed cross section with the spaced walls of distinguishing described plasma display discharge cell, described scan electrode with keep electrode and be arranged on each discharge cell inside, in each discharge cell described scan electrode with keep electrode and isolate setting respectively, and comprise at least two scan electrodes and keep electrode.

As mentioned above, the present invention can dwindle the area of each electrode of upper plate (scan electrode and keep electrode), reduces power consumption, reduces discharge electricity amount, improves discharging efficiency.

[description of drawings]

Fig. 1 is used for PDP discharge beginning with anodal light beam district of mean level (Positive Column) and keeps the concept map that describes.

Fig. 2 is the sectional view with the interchange PDP upper plate in anodal in the past light beam district.

Fig. 3 is the interchange PDP upper plate sectional view with the anodal light beam of the present invention the 1st embodiment district.

Fig. 4 a to 4b is the interchange PDP upper plate sectional view with the anodal light beam of the present invention the 2nd embodiment district.

[embodiment]

Following with reference to accompanying drawing, just the Utopian embodiment of the present invention describes.

Fig. 3 is the interchange PDP upper plate sectional view with the anodal light beam of the present invention the 1st embodiment district.The upper plate pixel 100 that exchanges PDP is configured to next door, parcel office form, and in pixel inside, scan electrode 11 is set and keeps electrode 12 with keeping certain intervals, and its spacing is " d1 ".

In the 1st embodiment of the present invention, described scan electrode 11 and keep electrode 12 and in spaced walls medial surface 95, isolated respectively, and towards the internal direction setting of spaced walls.

In the 2nd embodiment of the present invention, scan electrode and keep electrode by mutual segregate a plurality of scan electrodes with keep electrode and constitute.

That is, shown in Fig. 4 a, scan electrode and keep electrode and in the spaced walls medial surface, isolate to be provided with, and be separated into more than two.

Fig. 4 a has shown that two

scan electrode

11a, 11b and two keep

electrode

12a, 12b.

Shown in Fig. 4 b, scan electrode and keep electrode and in spaced walls lateral surface 96, isolate to be provided with respectively, and be separated into more than two.

Fig. 4 b has shown that 3

scan electrode

11a, 11b, 11c and three keep

electrode

12a, 11b, 12c.

At this moment, scan electrode and keep electrode and in the spaced walls lateral surface, isolated respectively and towards the scan electrode of spaced walls internal direction setting with keep electrode.

Therefore AC plasma display of the present invention has comprised upper plate that is provided with a pair of transparent sustain electrode and the lower plate that is provided with and keeps the electrode of electrode crossing, and in this plasma display, the part of intersecting with spaced walls has been removed.

At this moment, described transparent sustain electrode keeps certain spacing in gas-bearing formation inside with the interval of setting, and be set up in parallel across with the long axis direction of described spaced walls, and described to keep interelectrode interval all bigger than any one electrode and the interelectrode spacing of lower plate of described upper plate.

Therefore, the present invention can dwindle the area of each electrode of upper plate among the interchange PDP with anodal light beam district (scan electrode and keep electrode), reduces power consumption, reduces discharge electricity amount, improves discharging efficiency.

By described description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.Therefore, the technical scope of this invention can not be confined to the detailed description on the detailed book; Must determine its technical scope according to the scope of patent application.

Claims

1. plasma display comprises:

Upper plate and lower plate, in upper plate, be provided with bus electrode, connect scan electrode on the bus electrode or keep electrode, in lower plate, be provided with and the bus electrode address electrodes intersecting, described scan electrode with keep electrode and removed cross section with the spaced walls of distinguishing described plasma display discharge cell, described scan electrode with keep electrode and be arranged on each discharge cell inside, in each discharge cell described scan electrode with keep electrode and isolate setting respectively, and comprise at least two scan electrodes and keep electrode.