CN101136299A - Plasma display panel - Google Patents

Abstract

This invention provides a plasma display panel including a front plate, a back plate, an isolation plate and a discharge non-active film, in which, said isolation layer is placed between the front and the back plates, said discharge non-active film is formed between the isolation board and the back plate in a specific pattern and the film can increase ignition voltage of part of zones of the back plate so as to increase the discharge distance between the front and the back plates and irradiance efficiency of the panel.

Description

Plasma display

Technical field

The present invention relates to a kind of display unit, particularly relate to a kind of plasma display system.

Background technology

(plasma display panel PDP) has advantages such as high brightness, high efficiency, high-contrast, high writing speed, low cost to plasma display, is one of existing large scale digital plane display panel mainstream technology.

Shown in Fig. 1 (A), existing plasma display 10 mainly is made of three parts: header board (front plate) 12, back plate (back plate) 14 and the interlayer (shadow mask) 16 between header board 12 and back plate 14.

Generally speaking, header board 12 comprises first glass substrate (glass substrate) 121, a plurality of transparency electrode 122, a plurality of auxiliary electrode 123, transparent dielectric layer (transparent dielectric layer) 124 and first protective layer 125.14 of back plates comprise second glass substrate 141, a plurality of addressing electrode (addresselectrode) 142, dielectric layer 143 and second protective layer 144.Interlayer 16 comprises a plurality of barrier ribs (barrierrib) 161 and a plurality of colour phosphors (color phosphor) 162.In this example, label 162A, 162B, 162C represent the fluorophor of red, green, blue three looks respectively.

Each separate space that includes fluorophor 162 between the barrier rib 161 all can be regarded as luminescence unit (luminous cell).The pixel in the plasma display 10 can be formed in emitting red light unit, green emitting unit and blue-light-emitting unit.Be filled with helium (He), neon (Ne), xenon inert mixed gas such as (Xe) in this luminescence unit.Fig. 1 (B) is a schematic diagram of watching interlayer 16 and these addressing electrodes 142 along arrow 18A direction.Shown in Fig. 1 (B), each luminescence unit is a framework with barrier rib 161, fitly arranges at grade.And, include redness, green or blue fluorophor 162 in each luminescence unit separately.

Addressing electrode 142 in transparency electrode 122 in the header board 12 and the back plate 14 can cooperatively interact to produce high-tension electricity, triggers the gas in each luminescence unit thus, causes gas discharge and sends ultraviolet light.Ultraviolet light can excite this colour phosphor 162, produces the redgreenblue visible light.By control in the header board 12 transparency electrode 122 and the addressing electrode 142 in the plate 14 of back, the control circuit of plasma display 10 (not being shown among the figure) can determine whether luminous and luminous intensity of each luminescence unit.The light that each luminescence unit sends then can and then be formed the image with multiple color.

In actual applications, this transparency electrode 122 normally be plated in conductive tin indium oxide on first glass substrate 121 (indium tin oxide, ITO) or tin oxide (SnO ₂).The effect of auxiliary electrode 123 is to reduce the resistance of transparency electrode 122.Transparent dielectric layer 124 and dielectric layer 143 are called again that to lure electrics layer, function be store charge to reach the storage effect of preserving image.The material of first protective layer 125 and second protective layer 144 is generally magnesium oxide (MgO), and its function is the consume that prevents electrode.

See also Fig. 2, Fig. 2 is a schematic diagram of showing that pairing transparency electrode 122 of a certain luminescence unit and addressing electrode 142 subtends are discharged.In the prior art, the arcing distance between transparency electrode 122 and the addressing electrode 142 approximates the air line distance of header board 12 and 14 of the plates in back, the i.e. thickness of interlayer 16 (being generally 90～150 μ m) greatly.As known to persons skilled in the art, arcing distance is proportional to discharging efficiency.And discharging efficiency is higher, and the brightness of this luminescence unit is also bigger.The luminous efficiency that how to improve plasma display always is the subject under discussion that the researcher pays close attention to.

Summary of the invention

The invention provides a kind of scheme that improves the luminous efficiency of plasma display.Preferred one exemplary embodiment according to the present invention is a plasma display.This plasma display floater comprises header board, back plate, interlayer and the not active film that discharges.This interlayer is between this header board and this back plate.This discharges not, and active film then is formed between this interlayer and this back plate with special pattern.This discharges not that active film can improve the ignition voltage of the subregion of this back plate, increases the arcing distance between header board and back plate thus, to improve the luminous efficiency of this plasma display floater.

The advantages and spirit of the present invention can further be understood by following detailed Description Of The Invention and accompanying drawing.

Description of drawings

Fig. 1 (A) and Fig. 1 (B) are the frameworks of showing existing plasma display.

Fig. 2 is a schematic diagram of showing the inner subtend discharge of a certain luminescence unit in the prior art.

Fig. 3 (A) and Fig. 3 (B) are the frameworks of showing according to the plasma display of preferred one exemplary embodiment of the present invention.

Fig. 4 is a schematic diagram of showing the inner subtend discharge of a certain luminescence unit according to the present invention.

The simple symbol explanation

10,30: plasma display 12,32: header board

14,34: back plate 16,36: interlayer

121,321: the first glass substrates 122,322: transparency electrode

123,323: auxiliary electrode 124,324: transparent dielectric layer

125,325: the first protective layers 141,341: the second glass substrates

142,342: addressing electrode 143,343: dielectric layer

144,344: the second protective layers 161,361: barrier rib

162,362: colour phosphor 38: not active film discharges

18A, 18B, 40A, 40B: direction arrow

Embodiment

The invention provides a kind of plasma display with high-luminous-efficiency.

Preferred one exemplary embodiment according to the present invention is a plasma display.See also Fig. 3 (A), Fig. 3 (A) is the schematic diagram of this preferred one exemplary embodiment.This plasma display floater 30 comprises header board 32, back plate 34, interlayer 36 and the not active film (discharge destructive film) 38 that discharges.Interlayer 36 is between header board 32 and back plate 34.This 38 of active film of discharging not is formed between interlayer 36 and the back plate 34 with special pattern.In actual applications, the active film 38 that discharges not may comprise and is selected from silicon dioxide (SiO ₂) and titanium dioxide (TiO ₂) at least a material.

In this example, header board 32 comprises first glass substrate 321, a plurality of transparency electrode 322, a plurality of auxiliary electrode 323, transparent dielectric layer 324 and first protective layer 325.34 of back plates comprise second glass substrate 341, a plurality of addressing electrode 342, dielectric layer 343 and second protective layer 344.Interlayer 36 comprises a plurality of barrier ribs 361 and a plurality of colour phosphors 362.Label 362A, 362B, 362C represent the fluorophor of red, green, blue three looks respectively.As known to persons skilled in the art, in different plasma displays, the included separately element of above-mentioned header board 32, back plate 34 and interlayer 36 may be slightly variant.Therefore, also needn't be equal to the example shown in Fig. 3 (A) fully according to header board 32 of the present invention, back plate 34 with interlayer 36 element separately.

Fig. 3 (B) watches interlayer 36, this addressing electrode 342 and the not schematic diagram of active film 38 that discharges along arrow 40A direction.Shown in Fig. 3 (B), a plurality of luminescence units are framework with barrier rib 361, fitly arrange at grade.And, include redness, green or blue fluorophor 362 in each luminescence unit separately.In this example, the figure of the active film 38 not of discharging is vertical with this addressing electrode 342, covers the zone line of each luminescence unit.

See also Fig. 4, Fig. 4 is a schematic diagram of showing the pairing transparency electrode 322 of a certain luminescence unit and the discharge of addressing electrode 342 subtends in the present embodiment.Since the zone line of this luminescence unit by discharge not active film 38 cover, the ignition voltage of this zone line (firing voltage) can be higher than the zone that both sides are covered by the active film 38 not of not discharged.Therefore, when transparency electrode 322 was discharged with addressing electrode 342 subtends, the zone line of not active film 38 coverings of being discharged can not discharge.Therefore, electric discharge phenomena can be created in the not two side areas of active film 38 coverings of not discharged.As shown in Figure 4, the arcing distance in this luminescence unit is greater than arcing distance of the prior art.Because arcing distance is proportional to discharging efficiency, therefore obviously can have higher discharging efficiency and luminosity than prior art according to plasma display of the present invention.

In addition, according to the present invention, each luminescence unit has two region of discharges in the position of back plate during discharge, can make being more evenly distributed of the ultraviolet light that produces because of electric discharge phenomena.Therefore, the colour phosphor in each luminescence unit also can increase the absorptivity of ultraviolet light, also can further improve the luminosity of plasma display.

By the detailed description of above preferred one exemplary embodiment, be to wish to know more to describe feature of the present invention and spirit, and be not to come scope of the present invention is limited with the above-mentioned preferred one exemplary embodiment that is disclosed.On the contrary, its objective is that hope can be encompassed in various changes and equivalent feature in the scope of the claim that the present invention applies for.

Claims (10)

1. plasma display comprises:

Header board;

Back plate;

Interlayer, described interlayer is between described header board and described back plate; With

The not active film that discharges, described discharge not active film are formed between described interlayer and the described back plate with special pattern.

2. plasma display as claimed in claim 1, wherein said header board comprise first glass substrate, transparency electrode, auxiliary electrode, transparent dielectric layer and first protective layer.

3. plasma display as claimed in claim 2, the material of wherein said transparency electrode comprises tin indium oxide or tin oxide.

4. plasma display as claimed in claim 2, the material of wherein said first protective layer comprises magnesium oxide.

5. plasma display as claimed in claim 1, wherein said back plate comprises second glass substrate, addressing electrode, dielectric layer and second protective layer.

6. plasma display as claimed in claim 5, the material of wherein said second protective layer comprises magnesium oxide.

7. plasma display as claimed in claim 5, wherein said discharge not active film are formed between described interlayer and described second protective layer with described special pattern.

8. plasma display as claimed in claim 7, wherein said discharge not active film comprise by at least a material of selecting in silicon dioxide and the titanium dioxide.

9. plasma display as claimed in claim 1, wherein on the plate of described back, do not had first ignition voltage in the first area of active film covering by described discharge, not by described discharge not the second area that covers of active film have second ignition voltage, and described first ignition voltage is higher than described second ignition voltage.

10. plasma display as claimed in claim 1, wherein said interlayer comprise a plurality of barrier ribs and a plurality of colour phosphor.

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