Title:
INSPECTION SYSTEM OF FLAT PANEL DISPLAY SYSTEM
Document Type and Number:
Japanese Patent JP3245731
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress an interference fringe by a method wherein when a detec tion element is spatially and periodically positioned on first and second positions to display an image, a signal including a first moire image interference fringe is detected on the first position, next a signal including a second moire image is detected and intensity levels of both of the signals are averaged at a sampling point.
SOLUTION: A high resolution CID camera 15 covers a whole region of a display panel 11. A line 32 of an output of the camera 15 is applied to an image-processing computer 34 that operates the signal of the camera 15. In order to judge the uniformity of luminance of the display panel, the inspection of the first time is executed at the first time of alignment of a panel image with a camera pixel array. Generated intensity signals are stored in a memory of a computer 36. The image is slightly shifted with respect to a camera detector pixel because of the physical shift of the display or camera optical system, then the other image of the panel is detected to be stored in the memory. Moire interference fringes are different with each other. The image detection is executed on various shift positions and the interference fringe is suppressed.
Inventors:
Jeffrey A. Hawthorne
Daniel H. Scott
Robert E Cummins
Peter Jay Feikowski
Daniel H. Scott
Robert E Cummins
Peter Jay Feikowski
Application Number:
JP5821996A
Publication Date:
January 15, 2002
Filing Date:
February 22, 1996
Export Citation:
Assignee:
Photon Dynamics Incorporated
International Classes:
G01M11/00; G02F1/13; G01R31/00; (IPC1-7): G01M11/00
Other References:
【文献】国際公開93/19453(WO,A1)
Attorney, Agent or Firm:
Masaki Yamakawa
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