US 11,867,932 B2
Light control film having nano light absorbing layer and display using the same
JaeJung Han, Paju-si (KR); JaeJin Kim, Paju-si (KR); JinRyun Kim, Paju-si (KR); SeMin Lee, Paju-si (KR); DaeYong Kim, Paju-si (KR); and Eunhee Choi, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jun. 26, 2020, as Appl. No. 16/913,424.
Claims priority of application No. 10-2019-0079485 (KR), filed on Jul. 2, 2019; and application No. 10-2019-0167603 (KR), filed on Dec. 16, 2019.
Prior Publication US 2021/0003755 A1, Jan. 7, 2021
Int. Cl. G02B 5/22 (2006.01); G02B 5/00 (2006.01)
CPC G02B 5/22 (2013.01) [G02B 5/003 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A light control film comprising:
a lower layer having a first axis and a second axis;
a middle layer having a thickness disposed between the lower layer and an upper layer; and
a plurality of nano light absorbing layers arrayed with predetermined intervals along the first axis in the middle layer, each of the nano light absorbing layer having a width along the first axis, a length along the second axis and a height corresponding to the thickness of the middle layer,
wherein a ratio between the interval and the width of the nano light absorbing layer is in a range of 10:1 to 20:1,
wherein the plurality of nano light absorbing layers includes a first nano light absorbing layer and a second nano light absorbing layer neighboring with the interval between each other, and
wherein the middle layer includes a lower prism part and an upper prism part, the lower prism part positioned at a lower area based on an inclined surface connecting from an upper end of the first nano light absorbing layer to a lower end of the second nano light absorbing layer, and the upper prism part positioned at an upper area based on the inclined surface.