Method and device for parting glass substrate, liquid crystal panel, and liquid crystal panel manufacturing device
First Claim
1. A method of cutting apart a glass substrate having a deposited film formed thereon, comprising the steps of:
- removing strip-shaped portions of the deposited film by shaving off portions of the deposited film so as to expose strip-shaped regions on the substrate; and
forming cracks so as to permit the glass substrate to be cut apart along the strip-shaped regions exposed thereon, andcutting the glass substrate apart along the cracks,wherein said step of shaving off portions of the deposited film comprises the step of shaving off strip-shaped portions of the deposited film using a blade having a cutting edge having a substantially V-shaped, arc-shaped, or trapezoidal cross section.
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0 Petitions
Accused Products
Abstract
A method for cutting apart a glass substrate is provided whereby scribing of the glass substrate is possible without being affected by the presence or thickness of a deposited film formed thereon and without scratching the deposited film. To treat a glass substrate having a deposited film, such as a thin film or resin film, formed on one surface thereof, there are provided a shaving device, which is a blade that removes strip-shaped portions of the deposited film to expose strip-shaped regions on the glass substrate, and a wheel cutter that forms scribed lines along the strip-shaped regions exposed on the glass substrate. The glass substrate is cut apart along the scribed lines.
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Citations
48 Claims
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1. A method of cutting apart a glass substrate having a deposited film formed thereon, comprising the steps of:
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removing strip-shaped portions of the deposited film by shaving off portions of the deposited film so as to expose strip-shaped regions on the substrate; and forming cracks so as to permit the glass substrate to be cut apart along the strip-shaped regions exposed thereon, and cutting the glass substrate apart along the cracks, wherein said step of shaving off portions of the deposited film comprises the step of shaving off strip-shaped portions of the deposited film using a blade having a cutting edge having a substantially V-shaped, arc-shaped, or trapezoidal cross section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 17)
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12. A method of cutting apart a glass substrate having a deposited film formed thereon, comprising the steps of:
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removing strip-shaped portions of the deposited film by shaving off portions of the deposited film so as to expose strip-shaped regions on the substrate; and forming cracks so as to permit the glass substrate to be cut apart along the strip-shaped regions exposed thereon, and cutting the glass substrate apart along the cracks, wherein said step of removing strip-shaped portions of the deposited film so as to expose strip-shaped regions on the substrate comprises the step of cutting strip-shaped portions of the deposited film with a blade portion that directly shaves off portions of the deposited film and a holder portion that holds the blade portion.
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16. An apparatus for cutting apart a glass substrate, the apparatus including a workpiece stage on which a glass substrate having a deposited film formed thereon is placed, securing means for securing the glass substrate in a predetermined position on the workpiece stage, crack forming means for forming cracks on the glass substrate so as to permit the glass substrate to be cut apart along the cracks, and actuating means for moving the crack forming means to a predetermined position, the apparatus cutting apart the glass substrate into a plurality of blocks along the cracks, and further comprising:
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a glass substrate exposing means for removing strip-shaped portions of the deposited film so as to expose strip-shaped regions on the glass substrate by shaving off portions of the deposited film using a blade having a cutting edge, wherein the cracks are so formed that the glass substrate is cut apart along the strip-shaped regions exposed thereon by the glass substrate exposing means. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An apparatus for fabricating a liquid crystal panel, the apparatus fabricating a plurality of the liquid crystal panel, the liquid crystal panel being composed of either (a) a pair of substrate cells bonded together with liquid crystal sealed in between and with polarizer plates bonded to outer surfaces of the substrate cells,
wherein at least one end of one of the substrate cells protrudes from at least one end of the other of the substrate cells so as to form a protruding portion, the polarizer plates comprising a first polarizer plate bonded to the outer surface of the substrate cell that forms the protruding portion and a second polarizer plate bonded to the outer surface of the other of the substrate cells, connection terminals by way of which the liquid crystal panel is driven are formed on an inner surface of the protruding portion, and the first polarizer plate, bonded to the outer surface of the substrate that forms the protruding portion, so extends as to cover almost all of the entire areas of an outer surface of the protruding portion, or (b) a pair of substrate cells bonded together with liquid crystal sealed in between and with polarizer plates bonded to outer surfaces of the substrate cells, wherein edges of the polarizer plates are so formed as to have a vertical section that becomes thinner and thinner in a direction away from a center portion of the polarizer plates, and wherein the edges are inclined at an angle larger than 90° - but not larger than 135°
relative to the outer surfaces of the substrate cells, by cutting apart a glass substrate that has a plurality of pairs, arranged adjacent to one another, of glass substrate cells bonded together with liquid crystal sealed in between and that has polarizer plates bonded to both surfaces thereof, comprising;glass substrate exposing means for removing strip-shaped portions of the polarizer plates so as to expose strip-shaped regions on the glass substrate comprising a cutting mechanism for shaving off portions of the polarizer plates; and crack forming means for forming cracks so as to permit the glass substrate to be cut apart along the strip-shaped region exposed thereon by the glass substrate exposing means, wherein the glass substrate is cut apart along the cracks. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
- but not larger than 135°
Specification