APPARATUS AND METHOD FOR INSPECTING LIQUID CRYSTAL PANEL SUBSTRATE

• Main Authors: ENDO MASATOMO, ISHIDA SHIGERU, TOKUYASU YOSHIAKI, MATSUI JUNICHI, KAWASUMI YUKIHIRO
• Format: Patent
• Language: English
• Published: 05.03.2003
• Edition: 7
• Subjects: ADVERTISING; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; DISPLAYING; EDUCATION; FREQUENCY-CHANGING; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LABELS OR NAME-PLATES; MEASURING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

PROBLEM TO BE SOLVED: To provide an apparatus and a method for inspecting a liquid crystal panel substrate wherein whether the supply state of a liquid crystal is satisfactory or not can be judged and measured with satisfactory accuracy. SOLUTION: The inspecting apparatus is provided with a hollow substrate table 3 on which a substrate 10 supplied with liquid crystals 11 is placed, an imaging means 6 which can be moved in the upper part of the substrate table 3 by a moving means and a control means which controls the substrate table 3 and the imaging means 6. A backlight 9 and a polarizing plate 21 are installed at the substrate table 3, a polarizing plate 20 is installed at a lens part 8 in the imaging means 6, and the polarizing plate 21 at the substrate table 3 and the polarizing plate 20 at the imaging means 6 are arranged so as to become mutually crossed Nicols.