Image display apparatus

• Main Authors: IMAI KANJI, SAKAI YASUHIKO, WATANABE MICHIAKI, AONO HIROSHI
• Format: Patent
• Language: English
• Published: 20.11.2001
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

In an image display apparatus comprising a fluorescent layer formed on the inner surface of a vacuum container, an electron emission source, and a supporting member sandwiched between the fluorescent layer and the electron emission source so that the fluorescent layer and the electron emission source are kept in parallel, a displacement preventing system is provided to prevent displacement of the electron beams emitted from the electron sources caused by the charging of the supporting member. More specifically, the supporting member may be composed of an insulating portion contacting with the electron emission source and a conducting portion contacting with the fluorescent layer. An electrode portion may be provided between the insulating portion and the conductive portion. Electron sources are arranged on the insulating substrate so that the electron beams emitted from the electron sources will be landed on the fluorescent layer with an equal pitch. The vacuum container provided with the supporting members can resist the atmospheric pressure and the supporting members will not affect adversely the images, and therefore good images can be obtained.