CN101071715A

CN101071715A - Plasma display device

Info

Publication number: CN101071715A
Application number: CNA2007101127832A
Authority: CN
Inventors: 金昌贤; 朴宪建
Original assignee: LG Electronics Nanjing Plasma Co Ltd
Current assignee: LG Electronics Nanjing Plasma Co Ltd
Priority date: 2006-07-25
Filing date: 2007-06-19
Publication date: 2007-11-14
Also published as: KR20080009947A

Abstract

The invention discloses a plasma display device, comprising a first electrode formed on the upper basal plate, a second electrode and dielectric layer; a third electrode formed on the bottom basal plate and chiasma formed with the first electrode and the second electrode. The said upper basal plate and bottom basal plate are binded by binder, the area of the said dielectric layer is larger than the area forming binder. The area of the upper dielectric layer is larger than the area coated with binder, thus the invention can prevent electrode from corroding resulted from water or being broken resulted from outside force.

Description

Plasma display system

Technical field

The present invention is the plasma display system related invention, and especially by strengthening the upper dielectric layer on the certain intervals formation upper substrate, the bus electrode of avoiding being formed on the upper substrate exposes, thereby prevents the plasma display system of bus motor breakage.

Background technology

Usually, plasma display panel (Plasma Display Panel, hereinafter referred to as PDP) be to cause discharge by applying certain voltage to each electrode that is located at discharge space, the excitation of plasma fluorophor that produces during gas discharge and display text or comprise the device of the image of chart.Plasma display panel has easy maximization and lightness and plane slimming, wide visual angle up and down can be provided and manifest full color and the advantage of high brightness.

Among this PDP, the stub area that is formed on the scan electrode of upper substrate or keeps electrode exposes, and may cause electrode and be subjected to disrepair phenomenons such as moisture effects corrosion, therefore exists and reduces reliability problems.

Summary of the invention

The present invention proposes in order to solve the problem that exists in the above-mentioned conventional art.Expose in order to prevent scan electrode and to keep electrode, the object of the present invention is to provide a kind of plasma display system that strengthens the top dielectric layer region at certain intervals.

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

A kind of plasma display system comprises the 1st electrode that is formed on upper substrate, the 2nd electrode and dielectric layer; The 3rd electrode that on lower basal plate, forms with above-mentioned the 1st electrode and the 2nd electrode crossing; It is characterized in that: above-mentioned upper substrate and lower basal plate are bonding by adhesive, and the zone of above-mentioned dielectric layer is bigger than the zone of above-mentioned formation adhesive.

At this moment, with the 0.1mm to 10.0mm that is spaced apart between above-mentioned dielectric layer outermost and the above-mentioned adhesive area outermost, preferably 2.0mm to 3.5mm is characteristics.

And, be located at the electrode terminal section of passing on signal on above-mentioned the 1st electrode and the 2nd electrode to comprise; The end of its above-mentioned dielectric layer contacts with above-mentioned electrode terminal section and is characteristics.

And, be that to have adhesive material be characteristics to epoxy compounds etc. with above-mentioned adhesive.

The invention has the beneficial effects as follows: the dielectric zone, plasma display system of the present invention middle and upper part with said structure is greater than the zone of smearing adhesive, therefore has to prevent to keep electrode and be subjected to moisture effects and corrode or the effect of the breakage that external pressure causes.

Description of drawings

Fig. 1 is the picture of an example of demonstration plasma display panel structure,

Fig. 2 is the picture of an example of the arrangement of electrodes of demonstration plasma display panel,

Fig. 3 is for showing in the plasma display system, and a frame of image is with the picture of an example of a plurality of son field time-division method of driving,

Fig. 4 is the picture of summary demonstration by an example of the structure of the bonding plasma display panel of adhesive,

Fig. 5 is the picture of an example of demonstration plasma display system structure of the present invention.

Embodiment

Below introduce the present invention in detail by example and accompanying drawing.

Fig. 1 is the picture of an example of demonstration plasma display panel structure.

With reference to Fig. 1, then plasma display panel comprises that the conduct that is formed on the upper substrate 10 keeps the scan electrode 11 of electrode pair and keep electrode 12 Hes, is formed on the addressing electrode 22 on the lower basal plate 20.

Usually, keep electrode pair the 11, the 12nd, respectively by indium tin oxide (Indium-Tin-Oxide; ITO) the transparency electrode 11a of Zu Chenging, 12a and, can adopt silver (Ag), the bus electrode 11b of the lamination type of the metal of chromium (Cr) etc.s or the lamination type of chromium/copper/chromium (Cr/Cu/Cr) or chromium/aluminium/chromium (Cr/Al/Cr) formation, 12b.

At this moment,

bus electrode

11b, 12b are formed on transparency electrode 11a, on the 12a, play and reduce the higher transparency electrode 11a of resistance, the effect that the voltage that 12a causes descends.

And, formed among the PDP and absorbed the outside extraneous light that produces, reduce reflection, have color saturation (purity) and the PDP contrast cutting off the light function and improve upper substrate 10 black matrix" (BlackMatrix, BM).

Such black matrix" has, and is formed on and is located at the 1st black matrix" 15 Hes on barrier 21 position overlapped of lower basal plate 20, is formed on

transparency electrode

11a, 12a and bus electrode 11b, the 2nd black matrix" 11c between the 12b, 12c.

The black matrix" that 11c, 12c are decomposed to form is called divergence type BM by the 1st and the 2nd black matrix" 15 with this, and because of the 2nd black matrix" 11c, 12c forms a layer between electrode, therefore also can be called black layer or black electrode layers.

Be respectively formed at scan electrode 11 and keep the upper dielectric layer 13 and the protective layer 14 of lamination on the upper substrate 10 of electrode 12, will accumulate the isoionic charged particle of generation on the upper dielectric layer 13.The sputter influence of the charged particle that protective layer 14 protection upper dielectric layer 13 produce when avoiding being subjected to gas discharge, the release efficiency of 2 electronics of raising.

And, addressing electrode 22 and scan electrode 11 and keep electrode 12 and intersect to form on lower basal plate 20, form on the lower basal plate 20 of addressing electrode 22 and form lower dielectric layer 24 and barrier 21, the ultraviolet ray that the surface of lower dielectric layer 24 and barrier 21 produces when smearing by gas discharge and the fluorophor 23 of luminous generation visible light.

Barrier 21 by the vertical barrier 21a that forms side by side with addressing electrode 22 and, the horizontal barrier 21b that intersects to form with addressing electrode 22 forms, the physical division discharge string prevents to be leaked on the discharge string by ultraviolet ray and visible light that discharge generates.

The structure of the substrate that shows among Fig. 1 only is an example of plasma display panel of the present invention, and the present invention is not limited to the structure of plasma display panel shown in Figure 1.Such as PDP of the present invention can take to keep

electrode pair

11,12 and omit the transparency electrode 11a that is made up of ITO respectively, and 12a includes only bus electrode 11b, the structure of 12b.

This structure does not adopt transparency electrode 11a, and therefore 12a has and reduce the advantage that substrate is made unit price, and

bus electrode

11b, 12b also can adopt multiple materials such as photosensitive material except the above-mentioned material of enumerating.

And in the barrier structure of PDP shown in Figure 1, it is enclosed (CloseType) that discharge string manifests enclosed construction by vertical barrier 21a and horizontal barrier 21b.But be not limited to this, can adopt the structure of omitting horizontal barrier 21b is banding pattern (Stripe Type), the different difference type barrier structure of height of vertical barrier 21a and horizontal barrier 21b, vertical barrier 21a or laterally in the middle of the barrier 21b at least any above barrier form the channel type barrier structure of the channel (Channel) that can be used as the exhaust passage, vertically barrier 21a or laterally the flute profile barrier structure of any above barrier formation (Hollow) at least in the middle of the barrier 21b.

Wherein,, adopt channel type barrier structure or grooved barrier structure, then be preferably in horizontal barrier 21b and form channel or groove if adopt the difference type barrier then preferably laterally the height of barrier 21b is higher.

Moreover, diagram and introduced R in an example of the present invention, G and B discharge string be the example on same line respectively, but also can adopt other modes to arrange.Such as, R, G and B discharge string can be taked the arrangement of delta (Delta) type of rounded projections arranged.The shape of discharge string not only can be taked quadrangle too, also can take pentagon, multiple polygon such as hexagon.

Fig. 2 is the picture of an example of the arrangement of electrodes of demonstration plasma display panel.

With reference to Fig. 2, then form a plurality of discharge string of plasma display panel preferably with matrix arrangement.A plurality of discharge string are respectively each scan electrode (Y1 to Ym), and the cross part of respectively keeping electrode (Z1 to Zm) and each addressing electrode is equipped with.Scan electrode (Y1 to Ym) can drive successively or drive simultaneously, keeps electrode (Z1 to Zm) and then can drive simultaneously.Addressing electrode (X1 to Xn) can be divided into odd number order electrode and even number order electrode drive or drive successively.

The example that arrangement of electrodes shown in Figure 2 plasma panel electrode only of the present invention is arranged, the present invention is not limited to the arrangement of electrodes and the type of drive of plasma display panel shown in Figure 2.Such as, two scanning (dualscan) modes that can adopt central 2 scan electrodes of above-mentioned each scan electrode (Y1 to Ym) to scan simultaneously, each addressing electrode (X1 to Xn) can be divided into driving up and down from the core of substrate.

Fig. 3 is for showing that a frame of image is with the picture of an example of a plurality of son field time-division method of driving in the plasma display system.

With reference to Fig. 3, then unit frame is for the tone of represent images, can be according to a certain number of, for example 8 son fields (SF1 ..., SF8) time-division drives.And, each son field (SF1 ..., SF8) be divided into reset interval (not shown) and, between addressed area (A1 ..., A8) and, keep the interval (S1 ..., S8).

Between each addressed area (A1 ..., A8) in, (X) applies data-signal to addressing electrode, applies the scanning impulse corresponding with it successively in each scan electrode (Y).respectively keep the interval (S1 ..., S8) in, to scan electrode (Y) with keep electrode (Z) and apply alternately and keep pulse, between addressed area (A1 ..., A8) keep discharge in interior each selected discharge string.

The brightness of plasma display panel and unit frame occupy keep the interval (S1 ..., S8) Nei discharge time is proportional.When a frame forming 1 image embodies with 8 son fields and 256 tones, can be in each son field successively with 1,2,4,8,16,32,64,128 ratio distributes the mutually different umber of pulse of keeping.Perhaps, in order to obtain the brightness of 133 tones,, in son field 3 intervals and son field 8 intervals, keep discharge and get final product after visiting each string in son field 1 interval.

Simultaneously, the discharge time of keeping that is assigned to each son field is can be according to the variable adjustment of the weighted value of each son field.That is, introduce the example that a frame is divided into 8 son fields among Fig. 3 for example, but the present invention is not limited to this, can forms the number of the son field of a frame according to the various variation of design specification.For example, be divided into 12 or 16 son fields etc. more than 8 son fields and following field with one, drive plasma display panel.

Fig. 4 is for summarizing the picture that shows by an example of the bonding plasma display panel structure of adhesive.

With reference to Fig. 4, upper substrate 110 and the lower basal plate 120 of above-mentioned PDP shown in Figure 1 are bonding by adhesive 130.

Adhesive 130 preferably has adhesive material by epoxy compounds etc. to be formed, as shown in Figure 4 preferably with four jiaos of belt shapes japannings.At this moment, upper substrate 110 and lower basal plate 120 can be passed through adhesive 130 good bond.

Simultaneously, the shape of smearing adhesive 130 is not limited to shape shown in Figure 4, can only spread upon left side and right side, also can resemble the dotted line shape, with discontinuous banded japanning.And, smear the corner region of adhesive and can take curve shape.

Fig. 5 is the picture of an example of the structure of demonstration plasma display system of the present invention.

Introduce the structure of plasma display system of the present invention with reference to Fig. 5, but will omit the duplicate contents of Fig. 1 to the introduction of picture shown in Figure 4.

With reference to Fig. 5, plasma display system then of the present invention comprises being formed on keeps electrode 111 and top dielectric 112 on the upper substrate 110, with the suitable lower basal plate 120 of upper substrate 110.

For making upper substrate 110 and lower basal plate 120 good bond, upper substrate and 110 and lower basal plate 120 on smear adhesive 130.And, be provided with to being formed on the scan electrode on the upper substrate 110 and keeping electrode and wait electrode terminal section 145 Hes keep electrode 111 reception and registration drive signals, from drive division (not shown) received signal, so that suitably apply the signal reception and registration portion 140 of signal to keeping electrode 140.Wherein, signal reception and registration portion 140 preferably adopts and carries the tellite that flexibility is arranged with certain functional chip (Chip).For example, can adopt TCP (Tape Carrier Package), FPC (Flexible Printed Cable), COF (Chip OnFlexible) etc.

And, for making signal reception and registration portion 140 and keeping electrode 111 firm attachment, further guarantee the adhesiveness of upper substrate 110 and lower basal plate 120, can smear protective agents 135 such as UV curing agent or silicon.

Among this PDP, clip between top dielectric 112 and the upper substrate 110 and keep electrode 111.At this moment, as shown in Figure 5, top dielectric 112 is bigger than smearing adhesive 130.That is, the terminal of top dielectric 112 preferably contacts with electrode terminal section 145, and the interval P of the outermost of top dielectric 112 and adhesive 130 regional outermost is 0.1mm to 10.0mm.At this moment, can prevent to keep electrode 111 by top dielectric 112 exposes.Thus, can prevent to keep the breakage that stress that electrode 111 is subjected to the corrosion of moisture effects or protective agent 135 causes.And, consider to keep the interval that electrode 111 exposes and form the manufacturing expense that dielectric needs, top dielectric 112 preferably strengthens 2.0mm to 3.5mm again greater than the interval P in adhesive 130 zones usually.

Dielectric zone, plasma display system of the present invention middle and upper part with said structure is greater than the zone of smearing adhesive, therefore has to prevent to keep electrode and be subjected to moisture effects and corrode or the effect of the breakage that external pressure causes.

As above; with illustrative picture reference; introduced plasma display system of the present invention; but example that the present invention is not limited to point out in this specification and picture; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention, can carry out various changes and modification, so protection scope of the present invention is as the criterion when looking the claim restricted portion that is proposed.

Claims

1, a kind of plasma display system comprises the 1st electrode that is formed on upper substrate, the 2nd electrode and dielectric layer; The 3rd electrode that on lower basal plate, forms with above-mentioned the 1st electrode and the 2nd electrode crossing; It is characterized in that: above-mentioned upper substrate and lower basal plate are bonding by adhesive, and the zone of above-mentioned dielectric layer is bigger than the zone of above-mentioned formation adhesive.

2, plasma display system according to claim 1 is characterized in that: be spaced apart 0.1mm to 10.0mm between above-mentioned dielectric layer outermost and the above-mentioned adhesive area outermost.

3, plasma display system according to claim 2 is characterized in that: be spaced apart 2.0mm to 3.5mm between above-mentioned dielectric layer outermost and the above-mentioned adhesive area outermost.

4, plasma display system according to claim 1 is characterized in that: be provided with the electrode terminal section of passing on signal on above-mentioned the 1st electrode and the 2nd electrode; The end of above-mentioned dielectric layer contacts with above-mentioned electrode terminal section.

5, plasma display system according to claim 1 is characterized in that: above-mentioned adhesive is that epoxy compounds etc. has adhesive material.