The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2021
Filed:
Jan. 25, 2019
Samsung Display Co., Ltd., Yongin-si, KR;
Korea University Research and Business Foundation, Sejong-si, KR;
Seungin Baek, Seongnam-si, KR;
Sujin Choi, Seoul, KR;
Hwi Kim, Seoul, KR;
Mira Gwon, Daejeon, KR;
Youngeun Park, Seoul, KR;
Jongha Park, Seoul, KR;
Junghwan Yi, Hwaseong-si, KR;
Young jin Jeon, Seoul, KR;
Jungbeom Choi, Seoul, KR;
Younho Han, Seoul, KR;
SAMSUNG DISPLAY CO., LTD., Yongin-si, KR;
KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SEJONG CAMPUS, Sejong-si, KR;
Abstract
A display apparatus includes a light guide member disposed below a display member. A light source configured to generate light is disposed adjacent to the light guide member. The light guide member includes a plurality of diffraction on the light guide member. The diffraction patterns are spaced apart from each other in the first direction. The plurality of diffraction patterns diffract incident light, which is incident at an incident angle, to change the incident light to diffraction light having a diffraction angle. The incident angle is defined as an angle between the incident light and a normal line that is perpendicular to a top surface or a bottom surface of the light guide member. The diffraction angle, which is defined as an angle between the diffraction light and the normal line, has a magnitude less than that of the incident angle.