Method and apparatus for cutting apart a glass substrate, liquid crystal panel, and apparatus for fabricating a liquid crystal panel

• US 20090201444A1
• Filed: 01/16/2009
• Published: 08/13/2009
• Est. Priority Date: 11/08/2001
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Yamabuchi, Koji, Kaida, Kazuya, Izumi, Akinori, Katayama, Tetsuro, Takabe, Shinya, Komoda, Tomohisa, Furuya, Toshimitsu, Horiuchi, Takane
• Granted Patent: US 7,990,495 B2
• Time in Patent Office: Days
• US Class Current: 349/73
• CPC Class Codes: B65G 2249/04 Arrangements of vacuum systems or suction cups
• CPC Class Codes: C03B 33/033 Apparatus for opening score lines in glass sheets
• CPC Class Codes: C03B 33/07 Cutting armoured, multi-layered, coated or laminated, glass products
• CPC Class Codes: C03B 33/074 Glass products comprising an outer layer or surface coating of non-glass material
• CPC Class Codes: C03B 33/10 Glass-cutting tools, e.g. scoring tools
• CPC Class Codes: C03B 33/105 Details of cutting or scoring means, e.g. tips
• CPC Class Codes: C09K 2323/00 Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
• CPC Class Codes: G02F 1/133351 Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
• CPC Class Codes: Y10T 156/1052 with cutting, punching, tearing or severing
• CPC Class Codes: Y10T 156/1064 Partial cutting [e.g., grooving or incising]
• CPC Class Codes: Y10T 83/0333 Scoring
• CPC Class Codes: Y10T 83/04 Processes
• CPC Class Codes: Y10T 83/0495 Making and using a registration cut
• CPC Class Codes: Y10T 83/0524 Plural cutting steps
• CPC Class Codes: Y10T 83/0605 Cut advances across work surface
• CPC Class Codes: Y10T 83/9372 Rotatable type

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 (14a) that forms scribed lines along the strip-shaped regions exposed on the glass substrate. The glass substrate is cut apart along the scribed lines.

Claims

1. A liquid crystal panel composed of 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, and

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.

2. The liquid crystal panel according to claim 1,

wherein edges of the polarizer plates are located 1 mm or less inward from edges of the substrate cells.

3. The liquid crystal panel according to claim 1,

wherein removable protective films are laid on outer surfaces of the polarizer plates so as to be integral therewith.