| 摘要 |
PROBLEM TO BE SOLVED: To provide a display device in which mechanical strength is increased as much as possible without specially changing the manufacturing efficiency or manufacturing cost. SOLUTION: The rim cross section of a substrate cell is segmented into a first part where a cut line physically formed along the rim of the substrate cell is smoothened by a subsequent chemical polishing process and a second part that continues from the first part in the thickness direction to form a glass cut face. The first part is flattened in such a manner that an area ratio R=S/S<SB>0</SB>is less than 1.2, wherein S<SB>0</SB>is a virtual flat reference area on an XY-plane orthogonal to the surface of the substrate cell and is set to 600μm<SP>2</SP>or more, and S is a judgment area calculated in a measurement region of the rim cross section defined by the contour of the flat reference area S<SB>0</SB>. The judgment area represents a surface area calculated over the entire measurement region segmented into n*m sections by pitches of h=90/1024μm in the X direction and v=67/768μm in the Y direction, by specifying a height T (i, j) in a direction orthogonal to the XY plane and approximating a projection/recess pattern on the surface as a trapezoid. COPYRIGHT: (C)2009,JPO&INPIT
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