3D image based alignment method

摘要

An alignment method applied to a barrier-type 3D display includes providing a 3D alignment device at least comprising an image capture tool and an alignment shift analysis software; disposing a display panel with a barrier laminated thereon in the 3D alignment device; presenting a display and a barrier alignment check patterns on the display panel and the barrier; the image capture tool capturing an image of a moiré pattern generated by the display and the barrier alignment check patterns; analyzing the image of the moiré pattern by the alignment shift analysis software, and determining at least three measurement points of the image of the moiré pattern; calculating position shift for each measurement point and rotation angle between display panel and barrier by the alignment shift analysis software; and adjusting corresponding position between display panel and barrier if the calculation results exceed predetermined alignment errors.

主权项

1. An alignment method, applied to a barrier-type 3D display, comprising:
providing a 3D alignment device at least comprising an image capture tool and an alignment shift analysis software coupled to the image capture tool; disposing a display panel with a barrier laminated thereon in the 3D alignment device, and the image capture tool positioned above the barrier; independently and separately presenting a display alignment check pattern on the display panel and a barrier alignment check pattern on the barrier, wherein the display alignment check pattern is different from the barrier alignment check pattern; the image capture tool capturing an image of a moiré pattern generated by the barrier alignment check pattern laminating on the display alignment check pattern; analyzing the image of the moiré pattern by the alignment shift analysis software, and determining at least three measurement points correspondingly at an upper portion and an lower portion of the image of the moiré pattern; calculating a position shift for each of the measurement points by the alignment shift analysis software; calculating a rotation angle (at a x-y plane) between the display panel and the barrier from position shift calculation results of the measurement points; and adjusting corresponding position between the display panel and the barrier if the position shift results of the measurement points and the rotation angle exceed a predetermined alignment error, wherein the image capture tool is positioned correspondingly to a virtual center line of the display panel, and the measurement points are positioned correspondingly to the virtual center line of the display panel, the position shift calculated by the alignment shift analysis software is a x-position shift (Δx) or a y-position shift (Δy) for each of the measurement points:Δ⁢⁢x=-Wpix·tan⁢⁢θ0tan⁢⁢θ1-tan⁢⁢θ0,Δ⁢⁢y=-Wpix·tan⁢⁢θ0tan⁢⁢θ1-tan⁢⁢θ0, where Wpix is pixel width of display panel, and two angles (θ0,θ1) are angles of two separate measurement points to the virtual center line.