DISPLAY AND ITS MANUFACTURING METHOD

摘要

A display composed of substrate cells produced by cutting and separating a bonded glass substrate where display regions are interposed between two glass base sheets into the individual display regions. The peripheral edge surfaces of each substrate cell are formed by smoothening the physically formed cut surfaces by chemical polishing conducted after the cutting. The smoothened peripheral edge surfaces are so flattened as to exhibit an area ratio R=S/S0 of 1.2 or less where S0 is a preset virtual flat reference area of 600 µm2 or more in the X-Y plane perpendicular to the front surface of each substrate cell and S is a judgment area calculated for a measurement region of each peripheral edge surface demarcated by the contour of the flat reference area S0. The judgment area is calculated by specifying the height T(i, j) in the direction perpendicular to the X-Y plane for the whole measurement region divided into n*m divisions with pitches h=90/1024 µm in the X direction and pitches v=67/768 µm in the Y direction and by approximating the irregular shape of the surface to trapezoid. The mechanical strength of the display can be enhanced to an extreme level without specially altering the manufacturing efficiency and cost.