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:
May. 27, 2025
Filed:
Sep. 21, 2020
Lg Innotek Co., Ltd., Seoul, KR;
Jong Sik Lee, Seoul, KR;
Byung Sook Kim, Seoul, KR;
Jin Gyeong Park, Seoul, KR;
In Hae Lee, Seoul, KR;
Young Ju Han, Seoul, KR;
LG INNOTEK CO., LTD., Seoul, KR;
Abstract
An optical path control member according to an embodiment comprises: a first substrate; a first electrode provided on the upper portion of the first substrate; a second substrate provided on the first substrate; a second electrode provided on the lower portion of the second substrate; and an optical conversion unit provided between the first electrode and the second electrode, wherein the optical conversion unit comprises partition wall parts and accommodation parts which are alternately arranged. The accommodation parts have a light transmission rate that varies according to the application of a voltage, and the accommodation parts comprise a plurality of unit accommodation cells spaced apart from each other, and comprises a dispersion and light-absorbing particles which are dispersed in the dispersion. The light-absorbing particles comprise first particles and second particles, wherein the diameter of the first particles is greater than that of the second particles, and the surfaces of the first particles and the surfaces of the second particles are charged with the same polarity.