US 11,914,262 B2
Light shutter panel and transparent display apparatus having the same
Youngki Song, Paju-si (KR); JaeHyun Park, Paju-si (KR); and Sun Man Kim, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Apr. 21, 2021, as Appl. No. 17/236,758.
Claims priority of application No. 10-2020-0070964 (KR), filed on Jun. 11, 2020.
Prior Publication US 2021/0389640 A1, Dec. 16, 2021
Int. Cl. G02F 1/167 (2019.01); G02F 1/1679 (2019.01); G02F 1/1676 (2019.01)
CPC G02F 1/167 (2013.01) [G02F 1/1676 (2019.01); G02F 1/1679 (2019.01); G02F 2203/01 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A light shutter panel comprising:
a first light shutter panel including:
a first lower electrode plate;
a first upper electrode plate facing with the first lower electrode plate;
a first shutter layer disposed between the first lower electrode plate and the first upper electrode plate, and including first maximum light transmitting portion, a first minimum light blocking portion, first ink storage portions connecting the first maximum light transmitting portion and the first minimum light blocking portion, and a first electric field guide disposed between the first ink storage portions;
a plurality of first spacers maintaining a gap between the first lower electrode plate and the first upper electrode plate; and
a first black ink filled into the first ink storage portions of the first shutter layer, and
a second light shutter panel including:
a second lower electrode plate;
a second upper electrode plate facing with the second lower electrode plate;
a second shutter layer disposed between the second lower electrode plate and the second upper electrode plate, the second shutter layer including a second maximum light transmitting portion, a second minimum light blocking portion, second ink storage portions connecting the second maximum light transmitting portion and the second minimum light blocking portion, and a second electric field guide disposed between the second ink storage portions;
a plurality of second spacers maintaining a gap between the second lower electrode plate and the second upper electrode plate; and
a second black ink filled into the second ink storage portions of the second shutter layer,
wherein the first light shutter panel and the second light shutter panel are joined in a thickness direction,
wherein the first minimum light blocking portion and the second minimum light blocking portion are overlapped each other, and
wherein the first spacers are not overlapped with the second spacers.