Patents by Inventor Wonjong CHO
Wonjong CHO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10571732Abstract: A liquid crystal display includes a display panel; and an optical film on a bottom surface of the display panel, the optical film including a polarizer; a support sheet on a bottom surface of the polarizer; and a prism sheet on a bottom surface of the support sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet. The prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet.Type: GrantFiled: April 5, 2019Date of Patent: February 25, 2020Assignee: LG Display Co., Ltd.Inventors: Sejeon Park, Sudong Roh, Wonjong Cho
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Patent number: 10481308Abstract: Provided are an optical film, a method for manufacturing an optical film, and a liquid crystal display. An optical film includes: a polarizer, a diffusion sheet adhered to a bottom surface of the polarizer, the diffusion sheet including: a first diffusion member, and a second diffusion member adhered to the first diffusion member, and a prism sheet adhered to a bottom surface of the diffusion sheet.Type: GrantFiled: November 30, 2016Date of Patent: November 19, 2019Assignee: LG Display Co., Ltd.Inventors: Wonjong Cho, Sudong Roh, Daeheung Lee
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Patent number: 10429550Abstract: Penetration of moisture and propagation of cracks is prevented in a polarizer. An adhesive is provided to cover one or more edges of the polarizer to seal the side section of the polarizer. The adhesive fills initial cracks to prevent the initial crack from being propagated to the inside of the polarizer. A protective film and the adhesive include a material having a hydrophobic characteristic. In a method of fabricating a polarizer, a polarizing film is shaped to form a polarizing layer, and a protective film is then attached by applying an adhesive onto the edges of the polarizing layer. Then, the adhesive is cured, and the protective film having the polarizing layer attached is processed, thereby dividing the protective film into a plurality of polarizers. The adhesive can firmly fix the crack since the adhesive is fills in cracks in the polarizing layer.Type: GrantFiled: December 29, 2016Date of Patent: October 1, 2019Assignee: LG Display Co., Ltd.Inventors: Wonjong Cho, Wonki Park
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Publication number: 20190235306Abstract: A liquid crystal display includes a display panel; and an optical film on a bottom surface of the display panel, the optical film including a polarizer; a support sheet on a bottom surface of the polarizer; and a prism sheet on a bottom surface of the support sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet. The prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet.Type: ApplicationFiled: April 5, 2019Publication date: August 1, 2019Applicant: LG DISPLAY CO., LTD.Inventors: Sejeon PARK, Sudong ROH, Wonjong CHO
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Patent number: 10288924Abstract: A liquid crystal display includes a display panel; and an optical film on a bottom surface of the display panel, the optical film including a polarizer; a support sheet on a bottom surface of the polarizer; and a prism sheet on a bottom surface of the support sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet. The prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet.Type: GrantFiled: October 31, 2016Date of Patent: May 14, 2019Assignee: LG Display Co., Ltd.Inventors: Sejeon Park, Sudong Roh, Wonjong Cho
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Patent number: 10261348Abstract: A display device according to the present disclosure may be provided with a light path conversion protrusion on a lower surface of a cover window to suppress external light even for light incident at a side viewing angle, thereby improving contrast and visibility. According to the present disclosure, side-view angle incident light may be converted into the same incident light as that of vertical incident light, thereby providing an effect capable of preventing the reflection of incident light from a viewing angle as well as the vertical incident light.Type: GrantFiled: September 12, 2017Date of Patent: April 16, 2019Assignee: LG Display Co., Ltd.Inventors: Wonjong Cho, Daeheung Lee, Wonki Park
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Publication number: 20180095303Abstract: A display device according to the present disclosure may be provided with a light path conversion protrusion on a lower surface of a cover window to suppress external light even for light incident at a side viewing angle, thereby improving contrast and visibility. According to the present disclosure, side-view angle incident light may be converted into the same incident light as that of vertical incident light, thereby providing an effect capable of preventing the reflection of incident light from a viewing angle as well as the vertical incident light.Type: ApplicationFiled: September 12, 2017Publication date: April 5, 2018Applicant: LG Display Co., Ltd.Inventors: Wonjong CHO, Daeheung LEE, Wonki PARK
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Publication number: 20180003860Abstract: Penetration of moisture and propagation of cracks is prevented in a polarizer. An adhesive is provided to cover one or more edges of the polarizer to seal the side section of the polarizer. The adhesive fills initial cracks to prevent the initial crack from being propagated to the inside of the polarizer. A protective film and the adhesive include a material having a hydrophobic characteristic. In a method of fabricating a polarizer, a polarizing film is shaped to form a polarizing layer, and a protective film is then attached by applying an adhesive onto the edges of the polarizing layer. Then, the adhesive is cured, and the protective film having the polarizing layer attached is processed, thereby dividing the protective film into a plurality of polarizers. The adhesive can firmly fix the crack since the adhesive is fills in cracks in the polarizing layer.Type: ApplicationFiled: December 29, 2016Publication date: January 4, 2018Inventors: Wonjong CHO, Wonki PARK
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Publication number: 20170153362Abstract: Provided are an optical film, a method for manufacturing an optical film, and a liquid crystal display. An optical film includes: a polarizer, a diffusion sheet adhered to a bottom surface of the polarizer, the diffusion sheet including: a first diffusion member, and a second diffusion member adhered to the first diffusion member, and a prism sheet adhered to a bottom surface of the diffusion sheet.Type: ApplicationFiled: November 30, 2016Publication date: June 1, 2017Applicant: LG Display Co., Ltd.Inventors: Wonjong CHO, Sudong ROH, Daeheung LEE
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Publication number: 20170123263Abstract: A liquid crystal display includes a display panel; and an optical film on a bottom surface of the display panel, the optical film including a polarizer; a support sheet on a bottom surface of the polarizer; and a prism sheet on a bottom surface of the support sheet, the prism sheet having a base sheet, a prism portion, and a stitch portion over the base sheet. The prism portion includes a plurality of peaks and has a space defined by a direct contact between the plurality of peaks of the prism portion and the bottom surface of the support sheet.Type: ApplicationFiled: October 31, 2016Publication date: May 4, 2017Applicant: LG DISPLAY CO., LTD.Inventors: Sejeon PARK, Sudong ROH, Wonjong CHO
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Patent number: 9557589Abstract: A display device has a front surface and sides connected to each other using the same material. The display device includes a display panel, a case member wrapping around the side of the display panel, and a polarizing plate, which is attached to a front surface of the display panel and connects the display panel with the case member. The polarizing plate includes a polarizer disposed at the front surface of the display panel and a base film, which connects the front surface of the display panel with the case member.Type: GrantFiled: July 28, 2014Date of Patent: January 31, 2017Assignee: LG Display Co., Ltd.Inventors: Mikyung Park, Wonjong Cho, Sumin Lee
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Patent number: 9423543Abstract: A display device includes a display panel, a first pressure sensitive adhesive positioned on the display panel, a quarter wavelength (?/4) wave plate positioned on the pressure sensitive adhesive, a linear polarizer positioned on the ?/4 wave plate, and a first base layer positioned on the linear polarizer.Type: GrantFiled: November 21, 2013Date of Patent: August 23, 2016Assignee: LG Display Co., Ltd.Inventor: Wonjong Cho
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Publication number: 20150036074Abstract: A display device has a front surface and sides connected to each other using the same material. The display device includes a display panel, a case member wrapping around the side of the display panel, and a polarizing plate, which is attached to a front surface of the display panel and connects the display panel with the case member. The polarizing plate includes a polarizer disposed at the front surface of the display panel and a base film, which connects the front surface of the display panel with the case member.Type: ApplicationFiled: July 28, 2014Publication date: February 5, 2015Inventors: Mikyung Park, Wonjong Cho, Sumin Lee
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Publication number: 20140176880Abstract: A display device includes a display panel, a first pressure sensitive adhesive positioned on the display panel, a quarter wavelength (?/4) wave plate positioned on the pressure sensitive adhesive, a linear polarizer positioned on the ?/4 wave plate, and a first base layer positioned on the linear polarizer.Type: ApplicationFiled: November 21, 2013Publication date: June 26, 2014Applicant: LG Display Co., Ltd.Inventor: Wonjong CHO