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AssigneeFujitsu Limited
InventorsHitoshi Yamada, Akira Tokai, Manabu Ishimoto, Yosuke Yamazaki, Kenji Awamoto, Koji Shinohe, Hitoshi Hirakawa
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A light-emitting discharge tube in which an outer wall surface of a glass tube is made less susceptible to flaws by forming a protective film on the outer wall surface of the glass tube, a method of fabricating the light-emitting discharge tube, and a protective film forming apparatus are provided. The light-emitting discharge tube defines light-emitting discharge regions by a plurality of external electrodes. The outer wall surface of the light-emitting discharge tube (the glass tube) is coated with the protective film (a metal film, a conductive metal oxide film, an insulating metal oxide film, or an organic film).
1-10. (canceled)
A light-emitting discharge tube comprising:
The light-emitting discharge tube according to claim 1, wherein
The light-emitting discharge tube according to claim 2, wherein the protective film is subjected to patterning to form the external electrodes.
A light-emitting discharge tube that defines light-emitting discharge regions by a plurality of external electrodes, wherein an outer wall surface of the light-emitting discharge tube is coated with a protective film.
The light-emitting discharge tube according to claim 4, wherein the protective film is a metal film, a conductive metal oxide film, an insulating metal oxide film, or an organic film.
The light-emitting discharge tube according to claim 5, wherein the metal film or the conductive metal oxide film is subjected to patterning to form the external electrodes.
A method of fabricating a light-emitting discharge tube that defines light-emitting discharge regions by at least two external electrodes, the method comprising:
The method of fabricating a light-emitting discharge tube according to claim 7, wherein the protective film is a metal film, a conductive metal oxide film, an insulating metal oxide film, or an organic film.
The method of fabricating a light-emitting discharge tube according to claim 7, wherein the step of coating a protective film takes place successively after the step of forming a tube body for a light-emitting discharge tube.
The method of fabricating a light-emitting discharge tube according to claim 8, wherein the conductive metal oxide film or the insulating metal oxide film is formed using an organometallic compound solution that becomes a conductive metal oxide film or an insulating metal oxide film by calcination.
The method of fabricating a light-emitting discharge tube according to claim 8, further comprising performing patterning on the metal film or the conductive metal oxide film to form the external electrodes.
A protective film forming apparatus that forms a protective film on a surface of a tube body for a light-emitting discharge tube, the tube body being formed by stretching a tubular base material, the apparatus comprising:
Dependencies are inferred from the claim text.