Image display apparatus manufacturing method

• US 6,604,972 B1
• Filed: 11/03/2000
• Issued: 08/12/2003
• Est. Priority Date: 11/05/1999
• Status: Expired due to Fees

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Yamano, Akihiko
• Primary Examiner(s): Ramsey, Kenneth J.
• Assistant Examiner(s): COLON, GERMAN
• Application Number:
  US09/704,759
• Time in Patent Office: 1,012 Days
• Field of Search: 445/24, 313/495, 313/497, 427/64, 427/532, 427/540
• US Class Current: 445/24
• CPC Class Codes: H01J 2209/385 Gettering
• CPC Class Codes: H01J 29/085 Anode plates, e.g. for screens of flat panel displays
• CPC Class Codes: H01J 29/94 Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering exhausting, degassing, gettering of electric discharge tubes in general H01J9/38
• CPC Class Codes: H01J 31/127 using large area or array sources, i.e. essentially a source for each pixel group
• CPC Class Codes: H01J 9/20 Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel

Abstract

To provide an image display apparatus manufacturing method that enables bright, high-quality images to be displayed stably over a long period. A manufacturing method for an image display apparatus that includes a first substrate, a second substrate located at a distance from and opposite the first substrate, electron-emitting devices arranged on a principal surface of the first substrate, a phosphor film, and an electroconductive film covering that phosphor film, wherein the phosphor film and the electroconductive film are located on a principal surface of the second substrate so as to be opposite the electron-emitting devices, includes the following steps of:

(A) forming the above described phosphor film on the principal surface of the second substrate;

(B) forming a first electroconductive film covering the phosphor film;

(C) placing an electrode at a distance from-the first electroconductive film;

(D) applying a voltage between the first electroconductive film and the electrode; and

(E) forming a second electroconductive film on the first electroconductive film.

Claims

1. A manufacturing method for an image display apparatus that comprises a first substrate, a second substrate located at a distance from and opposite said first substrate, electron-emitting devices arranged on a principal surface of said first substrate, a phosphor film, and an electroconductive film covering that phosphor film, wherein said phosphor film and said electroconductive film are located on a principal surface of said second substrate so as to be opposite said electron-emitting devices, said method comprising the following steps of:

(A) forming said phosphor film on the principal surface of said second substrate;

(B) forming a first electroconductive film covering said phosphor film;

(C) placing an electrode at a distance from said first electroconductive film;

(D) applying a voltage between said first electroconductive film and said electrode; and

(E) forming a second electroconductive film on said first electroconductive film.

2. The manufacturing method for an image display apparatus according to claim 1, wherein the step of forming said first electroconductive film further comprises the following steps of:

laying a resin film placed on said phosphor film;

forming a first electroconductive film on said resin film; and

eliminating said resin film by baking.

3. The manufacturing method for an image display apparatus according to claim 1 or 2, wherein the voltage applied between said first electroconductive film and said electrode is equal to or greater than the voltage applied between said electron-emitting devices and said electroconductive film when said image display apparatus is driven.

4. The manufacturing method for an image display apparatus according to claim 1 or 2, wherein the strength of the field generated when a voltage is applied between said first electroconductive film and said electrode is equal to or greater than the strength of the field applied between said electron-emitting devices and said electroconductive film when said image display apparatus is driven.