Invention Grant
US07741767B2 Image display apparatus having first and second regions with respective luminances
失效
图像显示装置具有具有相应亮度的第一和第二区域
- Patent Title: Image display apparatus having first and second regions with respective luminances
- Patent Title (中): 图像显示装置具有具有相应亮度的第一和第二区域
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Application No.: US11935898Application Date: 2007-11-06
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Publication No.: US07741767B2Publication Date: 2010-06-22
- Inventor: Masahiro Yokota , Tsuyoshi Oyaizu , Hiroaki Ibuki
- Applicant: Masahiro Yokota , Tsuyoshi Oyaizu , Hiroaki Ibuki
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Canon Kabushiki Kaisha,Kabushiki Kaisha Toshiba
- Current Assignee: Canon Kabushiki Kaisha,Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2006-309175 20061115
- Main IPC: H01J1/62
- IPC: H01J1/62 ; H01J1/304

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.
Public/Granted literature
- US20080111467A1 IMAGE DISPLAY APPARATUS Public/Granted day:2008-05-15
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