Nippon Electric Glass Co., Ltd.

Industrial Technology Research Institute

Takahide Fujii

Michiharu Eta

Naotoshi Inayama

Masahiro Tomamoto

Hiroshi Takimoto

Yasuo Yamazaki

Tatsuya Takaya

Takahide Nakamura

Hidetaka Oda

Katsutoshi Fujiwara

Daisuke Nagata

Toru Sakurabayashi

Shinichi Ishibashi

Yasuhiko Ogiso

Mitsuharu Noda

Keiji Takagi

Takayuki Noda

Setsuo Uchida

Sho Itoh

Yasuhiro Matsumoto

Yasuo Teranishi

Hisatoshi Aiba

Tsuyoshi Okuno

Chun-Hsien Chien

Kiyotaka Kinoshita

Jyun-Kai Ciou

Hsin-Yun Hsu

Chang-Ying Chen

Kuo-Hsin Huang

Chia-Sheng Huang

Yung-Min Hsieh

Ting-Yu Ke

Takehiko Isomoto

Masayoshi Yamamoto

Masao Tsukada

Katsuhiro Taniguchi

This method includes: an initial crack forming step of forming an initial crack (CR) on a first surface (MG) of a mother glass sheet (MG); and a laser irradiation step of irradiating the mother glass sheet (MG) with laser light (L) to cause a crack (CR) to propagate along a preset cleaving line (CL) through use of the initial crack (CR) as a starting point. The laser irradiation step includes irradiating a second surface (MG) of the mother glass sheet (MG) with the laser light (L) to heat a surface layer (SL) and an inner portion (IL) of the second surface (MG), to thereby cause, through a thermal shock caused by the heating, the crack (CR) to propagate in an entire thickness direction of the mother glass sheet (MG) while propagating along the preset cleaving line (CL).

Method for manufacturing glass sheet

This method includes a laser irradiation step of radiating, in at least a part of a preset cleaving line (CL) of a mother glass sheet (MG), laser light (L) to a position (OSP) separated from the preset cleaving line (CL) so that a crack (CR) propagates along the preset cleaving line (CL).

Glass plate manufacturing method

A glass roll includes a glass film formed by a downdraw method. The glass film is wound into a roll using a winding roller in a state in which front and back glass surfaces of the glass film formed in the forming operation are exposed, and during the winding operation, the glass film is superposed on a separable protective sheet. The protective sheet extends beyond both sides in a width direction of the glass film. The protective sheet can further be wound on an outer peripheral surface of the glass film by winding only the protective sheet from a trailing end of the glass film in a winding direction of the glass film.

Glass roll with a separable protective sheet

A cutting method of a multilayer structure containing a brittle layer is provided. The cutting method includes: cutting the multilayer structure to form a cut edge; removing a material of the multilayer structure other than the brittle layer along the cut edge, wherein the material of the multilayer structure other than the brittle layer has a width ranging from 1 micron to 2 millimeter; and modifying an edge of the brittle layer remaining after removing the material of the multilayer structure other than the brittle layer by a laser beam.

Cutting method of a multilayer structure containing a brittle layer

A sheet member conveyance device includes: a support part configured to support a sheet member; and a moving part configured to move the support part to convey the sheet member, the support part including a deformation support part configured to support each of one end portion of the sheet member and another end portion of the sheet member, which are opposed to each other, and to partially deform the sheet member into a curved shape, to thereby form a convex thread portion or a concave thread portion crossing a principal surface of the sheet member.

Sheet member conveyance device, sheet member support device, sheet member inspection device, and sheet member conveyance method

In a method of producing a glass substrate including a laminate preparing step of laminating a glass filmhaving flexibility and a support glasssupporting the same, to prepare a laminate; a process step of forming an organic EL deviceon the glass filmin the laminate, involving heating; and a peeling step of peeling off the glass filmon which the organic EL deviceis formed from the support glassto obtain a glass substrate, a heating step of heating the glass filmand the support glassis executed before execution of the laminate preparing step, and the glass filmand the support glassare laminated in the condition that they are heated at the time of execution of the laminate preparing step.

Method for producing glass substrate

A glass roll reliably prevents a glass film from breaking from an end surface of the glass film as an origin of breakage. The glass roll is formed by winding the glass film into a roll while superposing the glass film on a protective sheet. The glass film is formed by an overflow downdraw method to have a thickness of 1 &#x3bc;m or more and 200 &#x3bc;m or less, and has each end surface in a width direction formed as a cut surface cut by laser splitting.

Glass roll, device for producing glass roll, and process for producing glass roll

A method of manufacturing a glass sheet involves forming a scribe in one surface of a glass sheet having a rectangular shape on a periphery of an edge portion of the glass sheet in parallel to the edge portion, and cutting the glass sheet along the scribe as a boundary. The method includes forming the scribe in a region other than both end portions of the glass sheet in a direction along the edge portion; and cutting the glass sheet along a bending portion in which the glass sheet is locally bent, the bending portion being continuously formed in a state of being connected to the scribe and gradually protruding from an edge portion side to an inner side as being shifted away from the scribe.

Sheet glass, method for manufacturing sheet glass, and device for manufacturing sheet glass

Provided is a cutting method for a glass sheet, comprising radiating a laser beam to a cutting portion (C) of a glass sheet (G) having a thickness of 500 &#x3bc;m or less to fuse the glass sheet (G), wherein a narrowest gap between fused end surfaces (Gaand Gb) of the glass sheet (G), which face each other in the cutting portion (C), is managed to satisfy a relationship of 0.1&#x2266;b/a&#x2266;2, where 'a' is a thickness of the glass sheet (G) and 'b' is the narrowest gap.

Cutting method for glass sheet and glass sheet cutting apparatus

A method of manufacturing a glass sheet laminate to be formed by integrally laminating two glass sheets includes: laminating the two glass sheets by bringing surfaces thereof in a vicinity of an outer peripheral portion into surface contact with each other; performing laser fusing so as to cut and remove a part of a surface contact portion under a state in which the surface contact portion has a surface roughness of 2.0 nm or less; and processing a fusing end surface of the surface contact portion into a curved surface and sealing the fusing end surface with heat generated when the laser fusing is performed.

Glass sheet laminate and method for producing same

Provided is a manufacturing method for a glass sheet, including: fusing a glass ribbon (G) by irradiating the glass ribbon (G) with a laser (L) along a preset cutting line (X), which is a boundary between a product portion (G) to be used as a product and a non-product portion (G) to be discarded, and jetting an assist gas (A) onto molten glass (M) generated by melting the glass ribbon (G) through heating with the laser (L) so as to remove the molten glass (M) by scattering the molten glass (M); and breaking the non-product portion (G) so as to discard the non-product portion (G), the assist gas (A) being jetted from the product portion (G) side with respect to the preset cutting line (X), to thereby cause scattered pieces of the molten glass (M) to adhere to the non-product portion (G) as pieces of dross (D).

Sheet glass manufacturing method and manufacturing device

A glass film laminate includes a supporting glass and a glass film peelably laminated to the supporting glass. A contacting surface of the glass film and a contacting surface of the supporting glass directly contact each other without an adhesive therebetween. The contacting surface of the supporting glass includes a first region and a second region with a surface roughness smaller than a surface roughness of the first region. An adhesive force between the supporting glass and the glass film is greater at the second region than at the first region.

Glass film laminate without adhesive

A method of cleaving and separating a glass sheet includes a cleaving step of cleaving a glass sheet along preset cleaving lines by a laser cleaving method, and a separation step of separating adjacent pieces of the cleaved glass sheet from each other. The cleaving step is performed under a state in which the glass sheet is placed on support members provided respectively in segment regions, which are segmented by the preset cleaving lines. The separation step is performed by separating the support members from each other in adjacent segment regions.

Method of cleaving and separating a glass sheet and apparatus for cleaving and separating a glass sheet

A glass sheet cutting device fuses and divides a glass substrate using a preset cutting line as a boundary while supplying an assist gas and a laser beam from above the glass substrate along the preset cutting line of the glass substrate. The glass sheet cutting device includes a first laser irradiator for radiating a fusing laser beam and a second laser irradiator for radiating an annealing laser beam. Through a fusing gap formed between fused end surfaces by fusing, the second laser irradiator radiates the annealing laser beam obliquely from above onto the fused end surface to be annealed.

Growing community of inventors

Shiga, Japan

Takahide Fujii