Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate
2007-11-06
2010-06-22
Guharay, Karabi (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
C313S495000
Reexamination Certificate
active
07741767
ABSTRACT:
An image display apparatus including a rear plate and a face plate facing the rear plate; wherein the rear plate includes an electron-emitting device; and the face plate includes a light-emitting body for emitting light through irradiation of electrons from the electron-emitting device, and a metal back arranged between the electron-emitting device and the light-emitting body. The light-emitting body includes a first region in which a luminance with respect to a maximum value of a luminance in the light-emitting body is greater than or equal to 50% and a second region in which the luminance is less than 50%; and an arithmetic mean deviation of the profile (Ra) of the metal back in the second region is larger than the arithmetic mean deviation of the profile (Ra) of the metal back in the first region.
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Ibuki Hiroaki
Oyaizu Tsuyoshi
Yokota Masahiro
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Guharay Karabi
Kabushiki Kaisha Toshiba
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