公开(公告)号：US10481493B2

公开(公告)日：2019-11-19

申请号：US15786751

申请日：2017-10-18

Applicant: Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Kyung-Jae Park ,  Ji Ung Kim ,  Hyung-Tak Jeon

IPC: G03F7/031 ,  G02F1/1339 ,  G02F1/1335 ,  G03F7/032 ,  G03F7/16 ,  G03F7/20 ,  G03F7/32 ,  G03F7/40 ,  G03F7/00 ,  G03F7/038 ,  H01L51/52

Abstract: The present invention relates to a colored photosensitive resin composition and to a light shielding spacer prepared therefrom. The colored photosensitive resin composition comprises an oxime ester fluorene-based compound as a photopolymerization initiator in a small amount, which is capable of forming a cured film that is excellent in terms of such properties as sensitivity, elastic recovery rate, resolution, chemical resistance, exudation resistance, voltage holding ratio, and the like. Accordingly, a light shielding spacer prepared therefrom can be advantageously used for a liquid crystal display, an organic EL display, and the like.

公开(公告)号：US20220204671A1

公开(公告)日：2022-06-30

申请号：US17543563

申请日：2021-12-06

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Kyung-Jae Park ,  Seung-Keun Kim ,  Kyu-Cheol Lee

IPC: C08F220/24 ,  C08F265/06

Abstract: The present invention relates to a fluorinated acrylate-based copolymer and to a photosensitive resin composition comprising the same. The copolymer can have excellent water repellency even with a relatively low content of fluorine by introducing a non-polar ring-containing unit, so that it can prevent coating imbalance and decreases in the pattern strength that may occur when the fluorine content is high.

公开(公告)号：US10747110B2

公开(公告)日：2020-08-18

申请号：US15991063

申请日：2018-05-29

Applicant: Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Ji Ung Kim ,  Hyung-Tak Jeon ,  Kyung-Jae Park ,  Jong-Ho Na ,  Hyung Gu Kim

IPC: G03F7/038 ,  G03F7/032 ,  G03F7/031 ,  G03F7/033 ,  G03F7/40 ,  G03F7/00 ,  G03F7/105 ,  G02F1/1339

Abstract: The present invention relates to a colored photosensitive resin composition that prevents the generation of uneven wrinkles when a cured film is formed, to thereby prevent spots that may be generated on the edges of a display upon the formation thereof, and has a short development time. Accordingly, the colored photosensitive resin composition can be advantageously used as a material for forming a protective film, an interlayer insulating film, a light shielding spacer such as a black column spacer, and the like to be employed in various electronic parts inclusive of a liquid crystal display (LCD) panel and an organic light emitting diode (OLED) display panel.

公开(公告)号：US20180356722A1

公开(公告)日：2018-12-13

申请号：US15993645

申请日：2018-05-31

Applicant: Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Kyung-Jae Park ,  Hyung-Tak Jeon ,  Ji Ung Kim ,  Jong-Ho Na ,  Hyung Gu Kim

IPC: G03F7/00 ,  G03F7/031 ,  G03F7/033 ,  G02F1/1339

CPC classification number: G03F7/0007 ,  G02F1/13394 ,  G02F2001/13398 ,  G03F7/031 ,  G03F7/033 ,  H01L27/3272

Abstract: The present invention relates to a colored photosensitive resin composition and to a light shielding spacer produced therefrom. The colored photosensitive resin composition comprises epoxy groups and double bonds in a specific molar ratio and an oxime ester fluorene-based photopolymerization initiator in a smaller amount than a conventional oxime ester-based photopolymerization initiator, so that it has excellent photo-curing characteristics. As a result, it is possible to improve the high sensitivity characteristics such as resolution and step difference even with a small amount of light. Specifically, since the curing characteristics of the film surface is improved, it is to possible to reduce the generation of outgassing, which is a contamination source that may be generated when the film is dried. In addition, the colored photosensitive resin composition is capable of forming a cured film that minimizes the generation of uneven wrinkles on its surface. Accordingly, the colored photosensitive resin composition can be advantageously used as a material for forming a light shielding spacer such as a black column spacer to be employed in various electronic parts inclusive of a liquid crystal display (LCD) panel and an organic light emitting diode (OLED) display panel.

公开(公告)号：US10747109B2

公开(公告)日：2020-08-18

申请号：US15993678

申请日：2018-05-31

Applicant: Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Hyung-Tak Jeon ,  Ji Ung Kim ,  Kyung-Jae Park ,  Jong-Ho Na ,  Hyung Gu Kim

IPC: G03F7/038 ,  G02F1/1339 ,  G03F7/00 ,  G03F7/031 ,  H01L51/00 ,  C08F283/10 ,  G03F7/105 ,  G03F7/027 ,  C08F222/40 ,  C08F265/06 ,  C08F2/48 ,  G03F7/033 ,  H01L51/52 ,  H01L27/32 ,  C08F222/10

Abstract: The present invention relates to a colored photosensitive resin composition capable of forming a cured film that does not generate uneven wrinkles on its surface, to thereby minimize spots on the display screen that may be generated by a defect in the gap between the upper and lower plates during their assembly, with the formation of an excellent step difference and a pattern in a high resolution; and to a light shielding spacer produced therefrom and used for a liquid crystal display, an organic EL display, or the like.

公开(公告)号：US20180356723A1

公开(公告)日：2018-12-13

申请号：US15993678

申请日：2018-05-31

Applicant: Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Hyung-Tak Jeon ,  Ji Ung Kim ,  Kyung-Jae Park ,  Jong-Ho Na ,  Hyung Gu Kim

IPC: G03F7/00 ,  G03F7/033 ,  G03F7/031 ,  G02F1/1339 ,  H01L51/00 ,  C08F283/10

Abstract: The present invention relates to a colored photosensitive resin composition capable of forming a cured film that does not generate uneven wrinkles on its surface, to thereby minimize spots on the display screen that may be generated by a defect in the gap between the upper and lower plates during their assembly, with the formation of an excellent step difference and a pattern in a high resolution; and to a light shielding spacer produced therefrom and used for a liquid crystal display, an organic EL display, or the like.

公开(公告)号：US20180143533A1

公开(公告)日：2018-05-24

申请号：US15786751

申请日：2017-10-18

Applicant: Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Kyung-Jae Park ,  Ji Ung Kim ,  Hyung-Tak Jeon

IPC: G03F7/031 ,  G03F7/032 ,  G03F7/16 ,  G03F7/20 ,  G03F7/32 ,  G03F7/40 ,  G02F1/1339 ,  G02F1/1335

Abstract: The present invention relates to a colored photosensitive resin composition and to a light shielding spacer prepared therefrom. The colored photosensitive resin composition comprises an oxime ester fluorene-based compound as a photopolymerization initiator in a small amount, which is capable of forming a cured film that is excellent in terms of such properties as sensitivity, elastic recovery rate, resolution, chemical resistance, exudation resistance, voltage holding ratio, and the like. Accordingly, a light shielding spacer prepared therefrom can be advantageously used for a liquid crystal display, an organic EL display, and the like.

公开(公告)号：US11493847B2

公开(公告)日：2022-11-08

申请号：US16879173

申请日：2020-05-20

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Seung-Keun Kim ,  Hyung-Tak Jeon ,  Kyu Cheol Lee ,  Kyung-Jae Park ,  Seung-Kyu Song

IPC: G03F7/09 ,  G03F7/38 ,  C08K5/34 ,  C08K5/33 ,  C08K5/11 ,  C08F220/32 ,  C08F220/24 ,  C08F220/18 ,  C08F220/06 ,  C08F222/40 ,  C08F212/08 ,  C08K5/00 ,  C08K3/04 ,  G02F1/13 ,  G03F7/40 ,  B82Y20/00 ,  C08K5/3492 ,  G03F7/028 ,  G02F1/13357 ,  G02F1/1335

Abstract: The present invention relates to a structure for a quantum dot barrier rib and a process for preparing the same. The structure for a quantum dot barrier rib of the present invention comprises a cured film having a uniform film thickness and an appropriate range of film thickness. Here, the reflectance RSCI measured by the SCI (specular component included) method and the reflectance RSCE measured by the SCE (specular component excluded) method are reduced, and the ratio between them (RSCE/RSCI) is appropriately adjusted, so that it is possible to satisfy such characteristics as high light-shielding property and low reflectance at the same time while the resolution and pattern characteristics are maintained to be excellent. In addition, when the structure for a quantum dot barrier rib is prepared, it is possible to form a multilayer pattern having a uniform film thickness suitable for the quantum dot barrier ribs in a single development process. Thus, it can be advantageously used for a quantum dot display.

公开(公告)号：US20220163887A1

公开(公告)日：2022-05-26

申请号：US17529008

申请日：2021-11-17

Applicant: ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.

Inventor： Seung-Keun KIM ,  Kyung-Jae Park

IPC: G03F7/039 ,  G03F7/32 ,  G03F7/40 ,  G03F7/20 ,  G03F7/004 ,  G03F7/16 ,  G03F7/18 ,  G03F7/38

Abstract: The colored photosensitive resin composition of the present invention maintains excellent resolution, visibility, and the like while it has excellent reflectance RSCI measured by the SCI (specular component included) method, reflectance RSCE measured by the SCE (specular component excluded) method, and the ratio between them (RSCE/RSCI), and has a uniform film thickness in an appropriate range. Thus, it can be formed into a multilayer cured film that simultaneously satisfies such physical properties as a high reflectance and a high light-shielding property. In addition, when a cured film is formed from the composition, it is possible to form a pattern on a multilayer film in a single development process. Thus, it can be advantageously used for a quantum dot display device.

公开(公告)号：US10534261B2

公开(公告)日：2020-01-14

申请号：US15782171

申请日：2017-10-12

Applicant: Rohm and Haas Electronic Materials Korea Ltd.

Inventor： Hyung-Tak Jeon ,  Ji Ung Kim ,  Kyung-Jae Park ,  Jong-Ho Na ,  Hyung Gu Kim ,  Seok-Bong Park

IPC: G03F7/038 ,  G02F1/1339 ,  G03F7/032 ,  G03F7/105 ,  G02F1/1335 ,  G03F7/031 ,  G03F7/16 ,  G03F7/20 ,  G03F7/32 ,  G03F7/40

Abstract: The present invention relates to a colored photosensitive resin composition capable of forming a cured film that does not generate uneven wrinkles on its surface at the time of its formation, and a light shielding spacer produced therefrom and used for a liquid crystal display, an organic EL display, or the like.