公开(公告)号：US10982108B2

公开(公告)日：2021-04-20

申请号：US16604044

申请日：2018-12-26

Applicant: LG Chem, Ltd.

Inventor： Sungeun Park ,  Jaehyun Yoo ,  Areum Kim ,  Joonhyung Kim

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C09D11/38 ,  B41M7/00 ,  C08G59/24 ,  C08G65/18 ,  C09D10/00 ,  C09D11/36

Abstract: A photopolymerizable composition for forming a bezel pattern developed to be applied on a display substrate, a method for forming a bezel pattern using the same, a bezel pattern manufactured thereby, a display substrate comprising a bezel pattern manufactured thereby, and a rework method for removing a bezel pattern having a defective printed pattern are disclosed herein. In some embodiments, the composition includes a colorant, an epoxy monomer, an oxetane monomer, a vinyl monomer, a cationic photopolymerization initiator, an adhesion promoter and a diluting solvent, the oxetane monomer comprises a monofunctional oxetane monomer and a difunctional oxetane monomer. The composition is suitable for manufacturing a bezel pattern that is easily removed, has sufficient adhesion to a display substrate, and good curing sensitivity and pencil hardness, without requiring a high-temperature heating process.

公开(公告)号：US20200248016A1

公开(公告)日：2020-08-06

申请号：US16488387

申请日：2018-11-19

Applicant: LG Chem, Ltd.

Inventor： Areum Kim ,  Jaehyun Yoo ,  Sungeun Park ,  Joonhyung Kim

IPC: C09D11/101 ,  C09D11/324 ,  G06T19/00 ,  F21V8/00

Abstract: An ultraviolet curable composition and a waveguide manufactured from the same are disclosed herein. In an embodiment, an ultraviolet curable composition for light shielding of a waveguide, comprises a colorant, an acrylate monomer, a urethane acrylate oligomer, an organosilane and a photopolymerization initiator, wherein adhesion between the cured composition and a glass substrate is 5B or greater by a ASTM D3359 standard and/or is 1,500 mN or greater by a microscratch test (MST).

公开(公告)号：US20200157368A1

公开(公告)日：2020-05-21

申请号：US16604044

申请日：2018-12-26

Applicant: LG Chem, Ltd.

Inventor： Sungeun Park ,  Jaehyun Yoo ,  Areum Kim ,  Joonhyung Kim

IPC: C09D11/38 ,  C08G65/18 ,  C09D11/36 ,  C08G59/24 ,  C09D10/00 ,  B41M7/00

Abstract: A photopolymerizable composition for forming a bezel pattern developed to be applied on a display substrate, a method for forming a bezel pattern using the same, a bezel pattern manufactured thereby, a display substrate comprising a bezel pattern manufactured thereby, and a rework method for removing a bezel pattern having a defective printed pattern are disclosed herein. In some embodiments, the composition includes a colorant, an epoxy monomer, an oxetane monomer, a vinyl monomer, a cationic photopolymerization initiator, an adhesion promoter and a diluting solvent, the oxetane monomer comprises a monofunctional oxetane monomer and a difunctional oxetane monomer. The composition is suitable for manufacturing a bezel pattern that is easily removed, has sufficient adhesion to a display substrate, and good curing sensitivity and pencil hardness, without requiring a high-temperature heating process.

公开(公告)号：US20200031141A1

公开(公告)日：2020-01-30

申请号：US16337534

申请日：2017-08-28

Applicant: LG Chem, Ltd.

Inventor： Jaehyun Yoo ,  Joonhyung Kim

IPC: B41J11/00 ,  B41J2/21 ,  B22F1/00 ,  C09D11/101 ,  B41M1/22

Abstract: A method for forming a UV pattern using inkjet printing, which enables to form a hairline or pattern having metallic luster in a single inkjet patterning process, a method for manufacturing a bezel comprising the same, and a bezel manufactured thereby are disclosed. The method for forming a UV pattern using inkjet printing comprises the steps of a) inkjet printing an ultraviolet curable ink containing metal particles in a non-display area of a cover window for a display to form a UV pattern; and b) curing the UV pattern. The bezel can be used in various fields such as a touch panel, a protective film for an optical disc, and the like.

公开(公告)号：US11447647B2

公开(公告)日：2022-09-20

申请号：US16337534

申请日：2017-08-28

Applicant: LG Chem, Ltd.

Inventor： Jaehyun Yoo ,  Joonhyung Kim

IPC: B41J2/01 ,  C09D11/101 ,  B41J2/21 ,  B41M1/22 ,  B41J11/00 ,  B22F1/052

Abstract: A method for forming a UV pattern using inkjet printing, which enables to form a hairline or pattern having metallic luster in a single inkjet patterning process, a method for manufacturing a bezel comprising the same, and a bezel manufactured thereby are disclosed. The method for forming a UV pattern using inkjet printing comprises the steps of a) inkjet printing an ultraviolet curable ink containing metal particles in a non-display area of a cover window for a display to form a UV pattern; and b) curing the UV pattern. The bezel can be used in various fields such as a touch panel, a protective film for an optical disc, and the like.

公开(公告)号：US11332631B2

公开(公告)日：2022-05-17

申请号：US16960701

申请日：2019-08-13

Applicant: LG Chem, Ltd.

Inventor： Jaehyun Yoo ,  Hyeok Jeong

IPC: C09D11/101 ,  B41M5/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/102 ,  C09D11/326 ,  C09D11/36 ,  C09D11/38

Abstract: An ultraviolet curable ink composition for forming a bezel pattern of a foldable display substrate, methods of using the same, a bezel pattern formed from the same, and a foldable display substrate include the bezel pattern are disclosed herein. In some embodiments, an ultraviolet curable ink composition includes a black pigment, a dispersant, an alicyclic epoxy compound, an oxetane compound, a photosensitizer, a photopolymerization initiator, and an organic solvent, wherein a weight ratio of the photosensitizer to the photopolymerization initiator is 1:1 to 1:2, and a sum of the amounts of the photosensitizer and the photopolymerization initiator is 13 to 21 parts by weight based on 100 parts by weight of a sum of the amounts of the alicyclic epoxy compound and the oxetane compound. The ink composition is capable of forming a bezel pattern having a diminished thickness and excellent light blocking properties.

公开(公告)号：US10895678B2

公开(公告)日：2021-01-19

申请号：US16488387

申请日：2018-11-19

Applicant: LG Chem, Ltd.

Inventor： Areum Kim ,  Jaehyun Yoo ,  Sungeun Park ,  Joonhyung Kim

IPC: G02B6/00 ,  F21V8/00 ,  C09D11/324

Abstract: An ultraviolet curable composition and a waveguide manufactured from the same are disclosed herein. In an embodiment, an ultraviolet curable composition for light shielding of a waveguide, comprises a colorant, an acrylate monomer, a urethane acrylate oligomer, an organosilane and a photopolymerization initiator, wherein adhesion between the cured composition and a glass substrate is 5B or greater by a ASTM D3359 standard and/or is 1,500 mN or greater by a microscratch test (MST).

公开(公告)号：US10809449B2

公开(公告)日：2020-10-20

申请号：US16488094

申请日：2018-11-19

Applicant: LG Chem, Ltd.

Inventor： Areum Kim ,  Jaehyun Yoo ,  Sungeun Park ,  Joonhyung Kim

IPC: G02B27/01 ,  F21V8/00 ,  C09C1/48 ,  G06T19/00 ,  G02B27/00

Abstract: A waveguide and a method for manufacturing the same are disclosed herein. In an embodiment, the waveguide includes a waveguide tube and a light-shielding film disposed on a cutsurface of the rim side of the waveguide tube. The light-shielding film has a thickness of 2 to 120 μm, an optical density (OD) of 0.01 to 0.7 on the basis of a light-shielding film thickness of 1.0 μm, and a hardness of 3H or more in accordance with ASTM D3363 standard.

公开(公告)号：US20200291252A1

公开(公告)日：2020-09-17

申请号：US16491770

申请日：2018-12-26

Applicant: LG Chem, Ltd.

Inventor： Sungeun Park ,  Jaehyun Yoo ,  Areum Kim ,  Joonhyung Kim

IPC: C09D11/101 ,  C09D11/102 ,  C09D11/324 ,  C08G65/08 ,  C08G65/18 ,  C08G65/26 ,  C08K5/17 ,  G02F1/1333

Abstract: An ultraviolet curable ink composition, a method for forming a bezel pattern using the same, a bezel pattern produced by the method, and a display substrate comprising the bezel pattern are disclosed herein. In some embodiments, an ultraviolet curable ink composition comprises a colorant, an epoxy monomer, an oxetane monomer, a cationic photo-polymerization initiator, and a polymerization inhibitor, wherein the weight ratio of the epoxy monomer to the oxetane monomer is 1:0.5 to 1:6.

公开(公告)号：US20200140705A1

公开(公告)日：2020-05-07

申请号：US16492811

申请日：2018-12-11

Applicant: LG Chem, Ltd.

Inventor： Jaehyun Yoo ,  Sungeun Park ,  Areum Kim ,  Joonhyung Kim

IPC: C09D11/101 ,  B41M7/00 ,  B41J11/00 ,  C09D11/037 ,  C09D11/322

Abstract: An ultraviolet curable black ink composition, a bezel pattern forming method using the same, a bezel pattern produced by the method, and a display substrate comprising the bezel pattern are disclosed herein. In some embodiments, an ultraviolet curable ink composition comprises a black pigment, a dispersant, an epoxy compound, an oxetane compound, a light diffusing agent, a photopolymerization initiator, and an organic solvent. The ultraviolet curable black ink composition is developed to be applied to a cover window film of a foldable display, has excellent light shielding properties and folding properties at a thin thickness, and as a light diffusing agent is applied to the ink, prevents surface wrinkles from generating due to a difference in the curing rate of the upper and lower portions of a bezel, by means of UV curing alone without a pretreatment process.