Invention Grant
- Patent Title: Image display apparatus
- Patent Title (中): 图像显示装置
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Application No.: US11275174Application Date: 2005-12-16
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Publication No.: US07830339B2Publication Date: 2010-11-09
- Inventor: Hideaki Yui
- Applicant: Hideaki Yui
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2004-365533 20041217; JP2005-358829 20051213
- Main IPC: G09G3/20
- IPC: G09G3/20 ; G09G3/22

Abstract:
An image display apparatus includes a rear plate having electron-emitting devices, a face plate having light-emitting regions, a spacer arranged between the rear plate and the face plate, and a drive circuit having a correction circuit which corrects input image data. A quantity of light emitted from an object light-emitting region depends on the quantity of electrons coming from a corresponding object electron-emitting device and coming from peripheral light-emitting regions of the object light-emitting region, and the quantity of light emitted from the object light-emitting region decreases when at least some of the emitted electrons are blocked by the spacer. The correction circuit includes a first circuit that calculates a value equivalent to the decrease in the quantity of light emitted from the object light-emitting region due to the blocked electrons, a second circuit that calculates a correction value by multiplying the value equivalent to the decrease in the quantity of light by an adjustment gain value that complies with a color of the object light-emitting region, and a third circuit that adds the correction value to the input image data of the object electron-emitting device.
Public/Granted literature
- US20060132396A1 IMAGE DISPLAY APPARATUS Public/Granted day:2006-06-22
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