Patent ID: 6313913
Filing Date: 2001-11-06
Classification: G01N

Abstract:
A liquid crystal display manufacturing method comprising:inspecting a reticle having a pattern thereon for defects and foreign matter adhering to the reticle; andexposing a pattern of the reticle onto a photosensitive substrate;wherein said step of inspecting the reticle comprises:a. irradiating the reticle with a first light beam from a first light irradiation system to form a first band-shaped irradiation region along a predetermined first direction on the reticle;b. receiving scattered light from said first band-shaped irradiation region with a first light receiving system;c. irradiating the reticle with a second light beam from a second light irradiation system to form a second band-shaped irradiation region along said first direction on the reticle;d. receiving scattered light from said second band-shaped irradiation region with a second light receiving system; ande. moving the reticle relative to said first and second light irradiation systems along a second direction substantially orthogonal to said first direction;f. wherein said first band-shaped irradiation region and said second band-shaped irradiation region are separated by a predetermined distance along said second direction so as to prevent said first light irradiation system from receiving scattered light from said second band-shaped irradiation region and prevent said second light irradiation system from receiving scattered light from said first band-shaped irradiation region.