WO2012041252A1 - Écran à plasma et procédé de préparation associé - Google Patents

Écran à plasma et procédé de préparation associé Download PDF

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Publication number
WO2012041252A1
WO2012041252A1 PCT/CN2011/080448 CN2011080448W WO2012041252A1 WO 2012041252 A1 WO2012041252 A1 WO 2012041252A1 CN 2011080448 W CN2011080448 W CN 2011080448W WO 2012041252 A1 WO2012041252 A1 WO 2012041252A1
Authority
WO
WIPO (PCT)
Prior art keywords
ultraviolet
nanoparticles
magnesium oxide
film
film layer
Prior art date
Application number
PCT/CN2011/080448
Other languages
English (en)
Chinese (zh)
Inventor
严群
Original Assignee
四川虹欧显示器件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 四川虹欧显示器件有限公司 filed Critical 四川虹欧显示器件有限公司
Publication of WO2012041252A1 publication Critical patent/WO2012041252A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20—Constructional details
    • H01J11/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J11/40—Layers for protecting or enhancing the electron emission, e.g. MgO layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20—Constructional details
    • H01J11/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J11/44—Optical arrangements or shielding arrangements, e.g. filters, black matrices, light reflecting means or electromagnetic shielding means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/40—Layers for protecting or enhancing the electron emission, e.g. MgO layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/44—Optical arrangements or shielding arrangements, e.g. filters or lenses
    • H01J2211/442—Light reflecting means; Anti-reflection means

Definitions

  • the present invention relates to the field of plasma display devices, and more particularly to a plasma screen having ultraviolet light reflecting capability and a method of fabricating the same.
  • Plasma TVs are increasingly entering people's lives due to their advantages of large screen, high definition, large viewing angle and digitization, but plasma TVs have low brightness compared with LCD TVs that are also ultra-thin TVs. Disadvantages. At the same time, the brightness of plasma TVs and LCD TVs is adjusted to the lowest and highest.
  • the maximum brightness of LCD TVs can reach 800 cd/m2, while plasma TVs can only reach 200 cd/m2, because LCD TVs use
  • the backlight is used to increase the brightness through multiple sets of light sources, while the plasma TV relies on its own illumination, so it is difficult to increase the brightness.
  • This display mode determines that the plasma TV has lower brightness than the LCD TV.
  • the plasma display PDP is a display device that uses gas discharge.
  • the screen uses a plasma tube as a light-emitting element, and a large number of plasma small grooves are arranged to form a display screen, and a small groove corresponding to each plasma is charged. There is an inert gas.
  • the inert gas enclosed in the plasma trough between the two layers of glass After applying a voltage between the plasma electrodes, the inert gas enclosed in the plasma trough between the two layers of glass generates ultraviolet light to excite the phosphor on the flat panel display to emit visible light.
  • Each plasma slot acts as a pixel, and the combination of light and dark and color variations of these pixels produces images of various gray levels and colors. Since ultraviolet light is not effectively utilized to generate visible light, the PDP screen is not sufficiently efficient.
  • An object of the present invention is to provide a plasma screen which is low in cost, simple in process, and has ultraviolet reflection performance and a preparation method thereof.
  • the present invention provides a plasma screen comprising a relatively sealed front panel and a rear panel, the front panel comprising a sequentially disposed glass substrate, an electrode material layer, and a dielectric film layer, wherein the front panel further comprises (1) an ultraviolet reflective film layer disposed on the dielectric film layer; or (2) a magnesium oxide thin film layer disposed on the dielectric thin film layer, and an ultraviolet reflective film layer disposed on the magnesium oxide thin film layer; (3), set in the media a magnesium oxide film layer on the film layer, wherein the magnesium oxide film contains a dispersed distribution of nanoparticles having ultraviolet reflection properties; wherein, the ultraviolet reflection film layers in (1) and (2) are rich in ultraviolet reflection Functional nanoparticles.
  • the area of the ultraviolet reflective film layer is 50% or less of the area of the dielectric film or the magnesium oxide film.
  • the volume of the nanoparticles in the magnesium oxide film accounts for 1% to 60% of the total volume.
  • the nanoparticles are metal nanoparticles and/or metal oxide nanoparticles.
  • the metal nanoparticles are one or more of aluminum, copper, nickel, and chromium nanoparticles; and the metal oxide nanoparticles are one or more of zinc oxide, titanium oxide, and tin oxide nanoparticles.
  • the particle size of the above nanoparticles is 20 ⁇ D ⁇ 300 nm.
  • the present invention also provides a method for fabricating a plasma screen, comprising separately preparing a front panel and a rear panel, and sealing the front panel and the rear panel together, wherein the steps of preparing the front panel include: setting the glass a substrate, an electrode material layer is formed on the glass substrate, and a dielectric film layer is formed on the electrode material layer, and the step of preparing the front panel further comprises: (1) forming an ultraviolet reflective film on the dielectric film; or (2) in the dielectric film Forming a magnesium oxide film thereon, and forming an ultraviolet reflecting film on the magnesium oxide film; or (3) mixing and dispersing the nanoparticles having ultraviolet reflecting properties in the magnesium oxide particles to form mixed particles, and disposing the mixed particles on the dielectric film A magnesium oxide film is formed.
  • the method further comprises the steps of: pulverizing the material having ultraviolet reflection property into nanoparticles, and dispersing the nanoparticles in a solvent to form a mixed solution A;
  • the mixed solution A is sprayed on a dielectric film or a magnesium oxide film, and after drying, an ultraviolet reflective film is formed.
  • the method (1) or (2) is used to prepare the ultraviolet reflective film layer, further comprising the steps of: pulverizing the material having ultraviolet reflection property into nanoparticles, and mixing the nanoparticles with the organic carrier to form a mixed slurry B;
  • the mixed slurry B is printed on a dielectric film or a magnesium oxide film, and the organic carrier is sintered to form an ultraviolet reflective film.
  • the ultraviolet reflective film layer is prepared by the method (3), further comprising the steps of: pulverizing the material having ultraviolet reflection property into nanoparticles, mixing the magnesium oxide particles with the nanoparticles to form a mixture C; and vapor-depositing the mixture C to On the dielectric film, a protective film having an ultraviolet reflecting function is formed.
  • the present invention forms an ultraviolet reflecting layer by providing particles having ultraviolet reflecting properties on the front panel of the plasma display panel to reflect ultraviolet light, thereby reducing the loss of ultraviolet rays generated by the inert gas discharge in the plasma screen.
  • the particles with ultraviolet reflection properties are prepared to be dispersed in the form of nanoparticles on the front panel of the plasma screen, which can reflect and scatter the ultraviolet light, and facilitate the smooth passage of visible light, thereby improving the utilization and fluorescence of ultraviolet light.
  • the luminous efficiency of the powder ultimately increases the brightness of the plasma screen.
  • the plasma screen includes oppositely sealed front and back panels, wherein the front panel includes a glass substrate, an electrode material layer, and a dielectric film layer.
  • the electrode material is disposed on the glass substrate, and the dielectric film is disposed on the electrode material, and the front panel further comprises: (1) an ultraviolet reflective film layer disposed on the dielectric film layer; or (2) disposed on the dielectric film layer a magnesium oxide thin film layer thereon, and an ultraviolet reflective film layer disposed on the magnesium oxide thin film layer; or (3) a magnesium oxide thin film layer disposed on the dielectric thin film layer, wherein the magnesium oxide thin film has a dispersed arrangement Ultraviolet reflective properties of nanoparticles.
  • the ultraviolet reflective film layer in (1) and (2) is rich in nanoparticles having ultraviolet reflection function.
  • the structure of the front panel of the intermediate ion screen of the present invention is not limited to the above three modes, as long as it has ultraviolet reflection performance.
  • the nanoparticles are prepared on the front panel of the plasma screen and form a reflective layer having an ultraviolet reflecting function. These ultraviolet-reflecting particles are disposed on the front panel of the plasma display panel to reflect ultraviolet light, which reduces the loss of ultraviolet rays generated by the inert gas discharge in the plasma screen.
  • the particles with ultraviolet reflection properties are prepared to be dispersed in the form of nanoparticles on the front panel of the plasma screen, so that the ultraviolet light can be reflected and scattered back, and the visible light can be smoothly passed, thereby improving the utilization and fluorescence of the ultraviolet light.
  • the luminous efficiency of the powder ultimately increases the brightness of the plasma screen.
  • the above dielectric film can be any dielectric film commonly used in plasma display panels.
  • a low glass powder dielectric film is preferably used, and such a low glass powder dielectric film is also well known to those skilled in the art and will not be described herein.
  • the magnesium oxide protective film is a protective film commonly used in the prior art, and is not limited to the use of a magnesium oxide protective film in the present invention. In practice, when other protective films that can be used in place of the magnesium oxide protective film are used, the present invention also belongs to the present invention. The scope of protection.
  • the structure of the front panel of the plasma screen is (1) or (2), that is, when the nanoparticles having ultraviolet reflection properties are prepared to form an ultraviolet reflective film layer on the surface of the dielectric film or the magnesium oxide film;
  • the area of the ultraviolet reflective film layer formed is 50% or less of the area of the dielectric film or the magnesium oxide film.
  • Such a coverage area is advantageous for ensuring the transmission of visible light, thereby ensuring the transmittance of visible light and the brightness of the PDP screen.
  • the structure of the plasma screen front panel is (3), that is, the nanoparticles having ultraviolet reflection properties are mixed and dispersed in the magnesium oxide film to form a magnesium oxide film layer having an ultraviolet reflection function.
  • the volume of the nanoparticles having ultraviolet light reflecting properties in the magnesium oxide film layer accounts for 1% to 60% of the total volume of the magnesium oxide film layer.
  • the magnesium oxide film thus prepared is capable of reflecting ultraviolet rays while ensuring the emission of visible light, thereby ensuring the transmittance of visible light and the brightness of the PDP panel.
  • the above-mentioned nanoparticles having ultraviolet light reflecting properties are metal nanoparticles and/or metal oxide nanoparticles.
  • such nanoparticles having ultraviolet reflectance properties are not limited to the use of metal nanoparticles and/or metal oxide nanoparticles. It is also possible to have a material similar to the non-metallic nanoparticles of SiO 2 .
  • Such particles can be used in the preparation of the plasma display panel of the present invention as long as they have the properties of vacuum ultraviolet reflection and scattering, and can be prepared to form nanoparticles.
  • the metal nanoparticles include, but are not limited to, one or more of aluminum, copper, nickel, chromium nanoparticles.
  • Such a metal nanomaterial can be used in the preparation of the plasma display panel of the present invention as long as it has ultraviolet light reflecting properties and can be prepared to form nanoparticles.
  • Metal oxide nanomaterials include, but are not limited to, one or more of zinc oxide, titanium oxide, tin oxide nanoparticles.
  • Such a metal nanomaterial can be used in the preparation of the plasma display panel of the present invention as long as it has ultraviolet light reflecting properties and can be prepared to form nanoparticles.
  • the nanomaterial may have a particle size ranging from 1 to 400 nm as long as it can be easily dispersed.
  • the above nanoparticles have a particle size of 20 ⁇ D ⁇ 300 nm.
  • the particle size of the nanoparticles is pulverized to 20 ⁇ D ⁇ 300 nm, and the ultraviolet light is reflected and scattered, and the visible light having a wavelength range of 400 nm to 800 nm is transmitted, thereby ensuring the transmittance of visible light, and the PDP screen. Brightness.
  • a method for fabricating a plasma screen includes separately preparing a front panel and a rear panel, and sealing the front panel and the rear panel together, wherein the step of preparing the front panel includes setting a glass substrate, a step of forming an electrode material layer on the glass substrate, and forming a dielectric film layer on the electrode material layer, and further comprising: (1) forming an ultraviolet reflecting film on the dielectric film; or (2) in the dielectric film Forming a magnesium oxide film thereon, forming an ultraviolet reflecting film on the magnesium oxide film; or (3) mixing and dispersing the nanoparticles having ultraviolet reflecting properties in the magnesium oxide particles to form mixed particles, and setting the mixed particles On the dielectric film.
  • the preparation method of the plasma screen does not change the preparation process of the original plasma screen, but simply adds a process to set particles with ultraviolet reflection properties on the front panel of the plasma display panel. These particles with ultraviolet reflection properties are easy to use. It is cheap, and the preparation method is simple and easy to implement.
  • the prepared ultraviolet reflecting film or the protective film having the ultraviolet reflecting function can reflect the ultraviolet light to reduce the loss of the ultraviolet light generated by the inert gas discharge in the plasma screen, and the particles having the ultraviolet reflecting property are prepared to be dispersed in the form of nanoparticles in the plasma.
  • the ultraviolet reflective film layer is prepared by the above method (1) or (2), the method further comprises the steps of: pulverizing a material having ultraviolet reflection property into nanoparticles, and using the nanoparticles Disperse in a solvent to form a mixed solution A; spray the dispersed mixed solution A on a dielectric film or a magnesium oxide film to form an ultraviolet reflecting film.
  • This method is simple and easy to implement.
  • solvents which may be used include, but are not limited to, aqueous solutions or various alcohol solutions such as ethanol, methanol, and propanol.
  • a dispersing agent may be added to the above mixed solution A, and the amount of the dispersing agent may be added. It is 2% to 7% of the total weight of the mixed solution A.
  • Dispersing agents which may be used include, but are not limited to, silicates, metal phosphates, and organic dispersants.
  • alkali metal phosphates include, but are not limited to, sodium tripolyphosphate, sodium hexametaphosphate and sodium pyrophosphate.
  • Organic dispersants include, but are not limited to, triethylhexylphosphoric acid, sodium lauryl sulfate, methylpentanol, cellulose derivatives, polyacrylamide, guar gum, fatty acid polyethylene glycol esters, and the like.
  • the dispersing agent can uniformly disperse the nano-particle material having ultraviolet reflecting property into a solvent to form a uniform dispersion, and the dispersion is relatively uniform when sprayed onto the dielectric film or the magnesium oxide film to form a relatively uniform ultraviolet reflecting film. .
  • the method further comprises the steps of: pulverizing a material having ultraviolet reflection property into nanoparticles, and nanometer
  • the particles are mixed with an organic vehicle to form a mixed slurry B.
  • the mixed slurry B is printed on a dielectric film or a magnesium oxide film, and the organic carrier is sintered to form the ultraviolet reflective film.
  • the sintering temperature can be controlled at 100 ⁇ 700 °C, and the sintering time can be controlled at 10 ⁇ 300min. In this way, the nanoparticulate material having the ultraviolet reflective property can be firmly bonded to the front panel of the plasma screen to form a structurally stable ultraviolet reflective film.
  • the organic vehicle used in this manner includes, but is not limited to, terpenes such as a-, ⁇ -, ⁇ -terpineol, ethylene glycol monoalkyl ethers, ethylene glycol dialkyl ethers, and nitro groups.
  • a fiber-based resin such as fiber, ethyl cellulose or hydroxyethyl cellulose, or a mixture of polybutyl acrylate.
  • the method further comprises the steps of: pulverizing a material having ultraviolet reflection property into nanoparticles, and mixing the magnesium oxide particles with the nanoparticles.
  • Example 1 Raw materials for preparing an ultraviolet reflective film: 5 g of aluminum powder, 100 g of water, and 5 g of a sodium tripolyphosphate dispersing agent. Preparation method: Prepare the front panel:
  • a glass substrate is provided, an electrode material layer is formed on the glass substrate, a dielectric film layer is formed on the electrode material layer, and a magnesium oxide film is formed on the dielectric film layer.
  • Example 2 Raw materials for preparing an ultraviolet reflective film: 50 g of zinc oxide, 1000 g of ethanol, and 30 g of sodium hexametaphosphate dispersant.
  • Preparation method Prepare the front panel: (1) A glass substrate is provided, an electrode material layer is formed on the glass substrate, and a dielectric film layer is formed on the electrode material layer.
  • the zinc oxide was pulverized to a particle size of 90 to 150 nm, added to ethanol, and a dispersant was added thereto, and stirred for 30 minutes to form a mixed solution A.
  • the mixed solution A was placed in a spray gun, sprayed continuously on the dielectric film layer for 10 seconds using a spray gun, and dried at 80 ° C for 30 minutes to form an ultraviolet reflective film having an area of 40% of the area of the dielectric film layer.
  • Example 3 Raw materials for preparing an ultraviolet reflective film: copper powder 10 g, ethyl cellulose and ethylene glycol monoalkyl ether 100 g. Preparation method: Prepare the front panel:
  • a glass substrate is provided, an electrode material layer is formed on the glass substrate, a dielectric film layer is formed on the electrode material layer, and a magnesium oxide protective film is provided on the low glass powder dielectric film layer.
  • the copper powder was pulverized to a particle size of 90 to 200 nm, and added to an organic vehicle, and stirred for 1.5 hours to form a mixed slurry B.
  • Example 4 Raw materials for preparing ultraviolet reflective film: aluminum powder 10 g, zinc oxide powder 10 g, ethylene glycol dialkyl ether and polybutyl acrylate 160 g, Preparation method: Preparation of front panel: (1) A glass substrate is provided, an electrode material layer is formed on the glass substrate, and a dielectric film layer is formed on the electrode material layer.
  • the aluminum powder and the zinc oxide powder were pulverized to a particle size of 200 to 300 nm, and added to an organic vehicle, and stirred for 30 minutes to form a mixed slurry B.
  • the mixed slurry B was printed on the dielectric film layer, and baked at 400 ° C for 80 minutes to remove the organic vehicle to form an ultraviolet reflective film having an area of 30% of the area of the magnesium oxide protective film.
  • Example 5 Raw materials for preparing a protective film having an ultraviolet reflecting function: chromium powder 10 g, zinc oxide powder 10 g, magnesium oxide powder
  • a glass substrate is provided, an electrode material layer is formed on the glass substrate, and a dielectric film layer is formed on the electrode material layer.
  • Example 6 A raw material for preparing a protective film having an ultraviolet reflecting function: aluminum powder 3 g, magnesium oxide powder 300 g, preparation method: same as in Example 5, wherein the chromium powder, the zinc oxide powder, and the magnesium oxide powder were pulverized in the step (2) The particle size is 150-200 nm; in step (3), at 200 ° C, the mixture C is evaporated onto the dielectric film layer to form a protective film having an ultraviolet reflecting function.
  • Preparation of front panel A glass substrate was provided, an electrode material layer was formed on the glass substrate, a dielectric film layer was formed on the electrode material layer, and a magnesium oxide film was formed on the dielectric film layer.
  • the rear panel is prepared, and the front panel and the rear panel are sealed together.
  • the plasma display screen prepared in Examples 1-6 and the plasma display screen prepared in Comparative Example 1 were subjected to luminous efficiency tests, and the test results are shown in Table 1.
  • the plasma display panel prepared in Embodiments 1-6 of the present invention has an illuminating brightness which is significantly better than that prepared by Comparative Example 1 by providing an ultraviolet reflecting film or a protective film having an ultraviolet reflecting function in the front panel.
  • the brightness of the plasma display This makes the plasma display provided by the present invention more favorable for the promotion and application of the plasma display.

Abstract

La présente invention concerne un écran à plasma et un procédé de préparation associé. L'écran à plasma comprend un panneau avant et un panneau arrière qui sont opposés l'un à l'autre et scellés. Le panneau avant comprend un substrat de verre, un matériau d'électrode et un film diélectrique. Des nanoparticules avec la propriété de réfléchissement d'ultraviolet sont agencées sur le film diélectrique, et l'agencement consiste : à agencer un film à réfléchissement d'ultraviolet formé sur le film diélectrique; lorsque le panneau avant comprend en outre un film d'oxyde de magnésium, à agencer un film d'émission d'ultraviolet formé sur le film d'oxyde de magnésium disposé sur le film diélectrique; et à disperser et à mélanger les nanoparticules dans le film d'oxyde de magnésium pour former un film protecteur avec une fonction de réfléchissement d'ultraviolet. L'écran à plasma évite la perte de l'ultraviolet produit par la décharge du gaz inerte dans l'écran à plasma. L'ultraviolet est réfléchi et rediffusé sans affecter la transmission de lumière visible, optimisant ainsi l'utilisation de l'ultraviolet et optimisant le rendement lumineux.
PCT/CN2011/080448 2010-09-30 2011-09-30 Écran à plasma et procédé de préparation associé WO2012041252A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010507900.7 2010-09-30
CN201010507900 2010-09-30

Publications (1)

Publication Number Publication Date
WO2012041252A1 true WO2012041252A1 (fr) 2012-04-05

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CN (1) CN102376512B (fr)
WO (1) WO2012041252A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1371115A (zh) * 2001-02-15 2002-09-25 皇家菲利浦电子有限公司 具有高亮度的等离子体图像显示屏

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100884152B1 (ko) * 2001-01-17 2009-02-17 파나소닉 주식회사 플라즈마 디스플레이 패널 및 그 제조방법
JP2005294051A (ja) * 2004-03-31 2005-10-20 Fujitsu Hitachi Plasma Display Ltd プラズマディスプレイパネルの製造方法
CN100362614C (zh) * 2004-07-13 2008-01-16 四川世纪双虹显示器件有限公司 一种制作气体放电显示屏的方法
WO2007086159A1 (fr) * 2006-01-24 2007-08-02 Sharp Kabushiki Kaisha Dispositif d'affichage, procédé pour fabriquer le dispositif d'affichage, substrat et substrat de filtre couleur

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1371115A (zh) * 2001-02-15 2002-09-25 皇家菲利浦电子有限公司 具有高亮度的等离子体图像显示屏

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CN102376512B (zh) 2014-03-12

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