Patent ID: 11914262
Assignee: LG DISPLAY CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A transparent display apparatus comprising:
a transparent display panel including a plurality of pixels in a matrix manner, each of the plurality of pixels including an emission area and a transmission area; and
a light shutter panel including:
a lower electrode plate;
a common electrode plate disposed as facing with the lower electrode plate;
an upper electrode plate disposed as facing with the common electrode plate;
a lower shutter layer disposed between the lower electrode plate and the common electrode plate, the lower shutter layer including a first maximum light transmitting portion, a first minimum light blocking portion, first electric field guides connecting the first maximum light transmitting portion and the first minimum light blocking portion, and a first ink storage portion disposed between the first electric field guides;
an upper shutter layer disposed between the upper electrode plate and the common electrode plate, the upper shutter layer including a second maximum light transmitting portion, a second minimum light blocking portion, second electric field guides connecting the second maximum light transmitting portion and the second minimum light blocking portion, and a second ink storage portion disposed between the second electric field guides;
a plurality of first transparent spacers maintaining a first gap between the lower electrode plate and the common electrode plate, uniformly;
a plurality of second transparent spacers maintaining a second gap between the upper electrode plate and the common electrode plate, uniformly;
a first black ink filled into the first ink storage portions; and
a second black ink filled into the second ink storage portions,
wherein the first minimum light blocking portion and the second minimum light blocking portion are overlapped each other, and
wherein the plurality of first transparent spacers are not overlapped with the plurality of second transparent spacers.