Mounting accuracy inspection method and inspection apparatus using the inspection method
AssigneeNLT Technologies, Ltd.
InventorsKazunori Masumura, Koji Shigemura
Life of this patent
Estimating the term…
Abstract
A display apparatus to be inspected includes: a display panel in which pixel groups are arranged; and an optical element for providing image display for N viewpoints (N is a natural number more than one) from the pixel groups. An inspection apparatus includes: a image output device for outputting a test pattern including image signals different in the respective viewpoints to the display apparatus; and an extraction device for extracting the slope and the position of a boundary line segment in an inspection image displayed on the display apparatus. The extraction device detects positional accuracy between the display panel and the optical element on the basis of the slope and the position extracted by the extraction device.
Claims24
A mounting accuracy inspection method for inspecting positional accuracy between a display panel, in which pixel groups are arranged so that each of the pixel groups includes N (N is natural number more than one) pixels corresponding to N viewpoints, and optical means for providing image display for the N viewpoints corresponding to the pixels based on images displayed on each of the pixels, said display panel and said optical means being included in a display apparatus, the method comprising:
- a displaying step displaying a test pattern that includes different image signals, which correspond to respective ones of the N viewpoints, on the display apparatus, the different image signals corresponding to at least a pair of adjacent ones of the N viewpoints, to input the different image signals to the respective pixels corresponding to the N viewpoints;
- and
- an extracting step adopting the image displayed on said display apparatus as an inspection image, and extracting a slope and a position of a boundary line segment between images corresponding to the pair of the adjacent ones of the N viewpoints in said inspection image.
An inspection apparatus for inspecting positional accuracy between a display panel, in which pixel groups are arranged so that each of the pixel groups includes N (N is natural number more than one) pixels corresponding to N viewpoints, and optical means for providing image display for the N viewpoints corresponding to the pixels based on images displayed on each of the pixels, in a display apparatus including said display panel and said optical means, the inspection apparatus comprising:
- an image output device outputting on the display apparatus a test pattern that includes different image signals, which correspond to respective ones of the N viewpoints, the different image signals corresponding to at least a pair of adjacent ones of the N viewpoints, to input the different image signals to the respective pixels corresponding to the N viewpoints;
- and
- an extraction device extracting a slope and a position of a boundary line segment between images corresponding to the pair of the adjacent ones of the N viewpoints in an inspection image displayed on said display apparatus,
- wherein the inspection apparatus detects the positional accuracy between said display panel and said optical means on the basis of the slope and the position extracted by said extraction device.
Dependencies are inferred from the claim text.