SAN JOSE, Calif., Sept. 27 -- Photon Dynamics Inc. has completed its acquisition of Akcron Corporation Ltd, which provides automated optical inspection equipment and backlight inverter manufacturing for flat panel displays, in Korea for approximately $4 million in cash. Based in Daeduk Valley, Daejeon, South Korea, Akcron Corporation LTD. was a privately held manufacturer of automated optical inspection equipment, image processing hardware and software algorithms and high-performance liquid crystal display (LCD) backlight inverters for flat panel displays. 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