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Fluorescent screen with metal back, and method of producing the same

A fluorescent screen, metal technology, applied in the application of luminescent paint, tube/lamp screen manufacturing, discharge tube/lamp manufacturing, etc., can solve problems such as narrowing of the setting range, poor transfer, and poor swelling.

Inactive Publication Date: 2006-05-03
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in the formation of the metal back layer using the transfer method, since the setting range of the above-mentioned conditions is narrowed, the unevenness of the adhesiveness between the phosphor layer and the metal back layer becomes large, so there is a possibility that the withstand voltage characteristic may be caused. Dropping or poor transfer, poor swelling, resulting in a decline in the yield of the product

Method used

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  • Fluorescent screen with metal back, and method of producing the same
  • Fluorescent screen with metal back, and method of producing the same
  • Fluorescent screen with metal back, and method of producing the same

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Experimental program
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Embodiment

[0044] First, after forming a stripe-shaped light-absorbing layer (light-shielding layer) made of black pigments on the inner surface of the panel by photolithography, apply and dry a layer containing ZnS-based, Y 2 o 3 Department, Y 2 o 2 Suspensions of phosphors of various colors, such as S series, are patterned by photolithography. In addition, phosphor layers of three colors, red (R), green (G), and blue (B), are formed adjacent to each other in stripes between the light-shielding parts to form a phosphor screen.

[0045] Next, the transfer film described below was produced. That is, a release agent layer with a thickness of 0.5 μm was formed on a base film made of polyester with a film thickness of 20 μm, and Al was deposited on it to form an Al film with a thickness of 50 nm. A resin composition consisting of 90 parts of toluene and 10 parts of vinyl acetate was machine coated and dried to form an adhesive layer.

[0046] Next, after arranging the transfer film so t...

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Abstract

A method for forming a metal-back fluorescent screen, comprising: a process of forming a phosphor layer on the inner surface of a panel; a transfer process of disposing a transfer film (3), so that the metal film is bonded to the phosphor layer through an adhesive layer, and transferred After the printing roller (1) is heated and pressed to bond, the base film is peeled off; and the pressure treatment process is to heat and press the metal film transferred on the phosphor layer by the pressure roller. Both the temperature of the pressing part of the transfer roller (1) and the pressure roller are set to 150 to 240°C, and the pressing speed is both set to 1.0 to 6.0 m / min. It is possible to form a metal-back phosphor screen with good adhesion between the phosphor layer and the metal back layer and excellent voltage resistance characteristics with a high yield.

Description

(1) Technical field [0001] The invention relates to a method for forming a metal back fluorescent screen, in particular to a method for forming a metal back layer on a phosphor layer by transfer printing in planar image display devices such as a field emission display (FED). (2) Background technology [0002] Conventionally, in image forming devices such as cathode ray tubes (CRTs) and FEDs, metal-back phosphor screens in which a metal film such as Al is formed on the inner surface of the phosphor layer (the surface opposite to the faceplate) have been widely used. [0003] The purpose of this metal back method is to: reflect the light emitted from the phosphor layer to the metal film (metal back layer) side by the electron excitation from the electron source, and transmit the luminous energy to the front of the panel more efficiently; The layer imparts electrical conductivity thereby functioning as an electrode. [0004] The formation of the metal back layer has been carri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/22H01J1/30H01J29/28
CPCH01J9/221H01J29/28B05C1/08H01J9/22H01J2209/012
Inventor 吉井正之伊藤武夫田中肇蒲生保则稻村昌晃中泽知子
Owner KK TOSHIBA