US 12,089,467 B2
Display device
Jong Hoon Kim, Seoul (KR); Jang Il Kim, Asan-si (KR); and Jeong Ki Kim, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Oct. 7, 2021, as Appl. No. 17/496,324.
Claims priority of application No. 10-2021-0013682 (KR), filed on Jan. 29, 2021.
Prior Publication US 2022/0246684 A1, Aug. 4, 2022
Int. Cl. H10K 59/38 (2023.01); H10K 59/122 (2023.01)
CPC H10K 59/38 (2023.02) [H10K 59/122 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a first substrate including:
a first emission area emitting light of a first color;
a second emission area emitting light of a second color having a peak wavelength shorter than a peak wavelength of light of the first color; and
a light blocking area which blocks light;
a color filter layer disposed on a surface of the first substrate; and
a wavelength control layer disposed on the color filter layer and including a bank layer and a wavelength control structure, wherein
the bank layer is disposed in the light blocking area on the color filter layer, and includes:
a first trapezoidal-shaped bank;
a second trapezoidal-shaped bank spaced apart from the first trapezoidal-shaped bank;
a first opening overlapping the first emission area;
a second opening overlapping the second emission area; and
a bank hole disposed in the light blocking area directly between the first trapezoidal-shaped bank and the second trapezoidal-shaped bank,
the wavelength control structure is disposed in the first opening and the second opening of the bank layer,
the first opening, the second opening, and the bank hole are spaced apart from each other, and
the bank hole surrounds an edge of the first opening.