Granted Patent B2

US 12,635,393 · App. 17/870,595 · Granted May 19, 2026

Inventors: Mihwa Lee (Yongin-si, KR); Sujeong Kim (Yongin-si, KR); Kyunghee Lee (Yongin-si, KR)

Assignee: Samsung Display Co., Ltd.

H10K59/878H10K59/122H10K59/352H10K59/353H10K59/38

Abstract

Claims (32)

1 . A display apparatus comprising:

a substrate;

a first light-emitting device, a second light-emitting device, and a third light-emitting device on the substrate and having respective emission areas, the first light-emitting device, the second light-emitting device, and the third light-emitting device being configured to emit light having different wavelengths from each other;

a low-reflection layer on the first light-emitting device, the second light-emitting device, and the third light-emitting device, the low-reflection layer comprising an inorganic material;

a color filter layer on the low-reflection layer and configured to transmit light in a first wavelength region corresponding to the second light-emitting device; and

a reflection control layer on the color filter layer and comprising a dye, a pigment, or a combination thereof,

wherein the color filter layer has a first opening and a third opening respectively corresponding to the first light-emitting device and the third light-emitting device from among the first light-emitting device, the second light-emitting device, and the third light-emitting device,

wherein the reflection control layer has a second opening corresponding to the second light-emitting device.

2 . The display apparatus of claim 1 , wherein a size of the second opening is smaller than each of the first opening and the third opening.

3 . The display apparatus of claim 1 , wherein the reflection control layer fills the first opening and the third opening.

4 . The display apparatus of claim 1 , wherein the color filter layer and the reflection control layer do not overlap each other in the respective emission areas of the first light-emitting device, the second light-emitting device, and the third light-emitting device.

5 . The display apparatus of claim 4 , wherein only the color filter layer from among the color filter layer and the reflection control layer is arranged to correspond to the second light-emitting device.

6 . The display apparatus of claim 4 , wherein only the reflection control layer from among the color filter layer and the reflection control layer is arranged to correspond to the first light-emitting device and the third light-emitting device.

7 . The display apparatus of claim 1 , wherein a non-emission area is between the emission areas, and

wherein the non-emission area has a light-blocking area at where the color filter layer and the reflection control layer overlap each other.

8 . The display apparatus of claim 7 , wherein an optical density of the light-blocking area corresponding to the non-emission area is equal to or greater than 1.3.

9 . The display apparatus of claim 1 , wherein the first wavelength region is a range from 500 nm to 580 nm.

10 . The display apparatus of claim 1 , wherein the low-reflection layer comprises at least one of a metal and a metal oxide.

11 . The display apparatus of claim 10 , wherein the low-reflection layer comprises ytterbium (Yb), bismuth (Bi), cobalt (Co), molybdenum (Mo), titanium (Ti), zirconium (Zr), aluminum (Al), chromium (Cr), niobium (Nb), platinum (Pt), tungsten (W), indium (In), tin (Sn), iron (Fe), nickel (Ni), tantalum (Ta), manganese (Mn), zinc (Zn), germanium (Ge), silver (Ag), magnesium (Mg), gold (Au), copper (Cu), calcium (Ca), or a combination thereof.

12 . The display apparatus of claim 10 , wherein the low-reflection layer comprises SiO 2 , TiO 2 , ZrO 2 , Ta 2 O 5 , HfO 2 , Al 2 O 3 , ZnO, Y 2 O 3 , BeO, MgO, PbO 2 , WO 3 , SiNx, LiF, CaF 2 , MgF 2 , CdS, or a combination thereof.

13 . The display apparatus of claim 1 , wherein a refractive index of the low-reflection layer is equal to or greater than 1.

14 . The display apparatus of claim 1 , wherein an absorption coefficient of the low-reflection layer is equal to or less than 4.0.

15 . The display apparatus of claim 1 , wherein the first light-emitting device comprises a first pixel electrode, the second light-emitting device comprises a second pixel electrode, and the third light-emitting device comprises a third pixel electrode,

wherein the display apparatus further comprises a pixel-defining film covering edges of the first pixel electrode, the second pixel electrode, and the third pixel electrode, the pixel-defining film having an opening portion through which a central portion of each of the first pixel electrode, the second pixel electrode, and the third pixel electrode is exposed, and

wherein the pixel-defining film comprises a light-blocking material.

16 . The display apparatus of claim 1 , further comprising:

a thin-film encapsulation layer on the low-reflection layer; and

a touch sensing layer on the thin-film encapsulation layer and comprising a conductive layer corresponding to a non-emission area between the emission areas,

wherein the color filter layer is on the touch sensing layer.

17 . The display apparatus of claim 16 , wherein a width of an area where the color filter layer and the reflection control layer overlap each other is greater than a width of the conductive layer overlapping the area.

18 . The display apparatus of claim 1 , further comprising a capping layer on the first light-emitting device, the second light-emitting device, and the third light-emitting device, the capping layer comprising an organic material,

wherein the low-reflection layer is directly on the capping layer.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (21)