IP Library › Granted Patent US 12,101,962
Granted Patent B2
US 12,101,962 · App. 17/455,193 · Granted Sep 24, 2024

Display device

Inventors: Jeong Myo Sim (Gangneung-si, KR); Kyunghee Lee (Suwon-si, KR); Mihwa Lee (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
H10K50/846H10K50/865H10K59/12H10K59/38H10K59/40
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Quick Facts
Patent No.
US 12,101,962
App. No.
17/455,193
Granted
Sep 24, 2024
Kind
B2
Abstract

A display device includes a display panel and a light control layer disposed on the display panel. The light control layer includes a base portion, a coloring agent having a maximum absorption wavelength in a wavelength range equal to or greater than about 580 nm and equal to or smaller than about 600 nm, and a desiccant.

Claims (51)

1. A display device comprising:

a display panel; and

a light control layer on the display panel and comprising:

a base portion,

a coloring agent having a maximum absorption wavelength in a wavelength range of about 580 nm to about 600 nm, and

a desiccant.

2. The display device of claim 1 , wherein the desiccant is in a first state before absorbing moisture and in a second state after absorbing the moisture, and

a color of the desiccant in the first state is the same as a color of the desiccant in the second state.

3. The display device of claim 1 , wherein the desiccant transmits visible light.

4. The display device of claim 1 , wherein the light control layer comprises about 0.01 wt % to about 5.00 wt % of the desiccant with respect to a total content of the light control layer.

5. The display device of claim 1 , wherein the desiccant comprises at least one selected from CaO, MgO, CaCl 2 , CaCO 3 , CaZrO 3 , CaTiO 3 , SiO 2 , Ca 2 SiO 4 , MgCl 2 , P 2 O 5 , Li 2 O, Na 2 O, BaO, Li 2 SO 4 , Na 2 SO 4 , CaSO 4 , MgSO 4 , CoSO 4 , Ga 2 (SO 4 ) 3 , Ti(SO 4 ) 2 , NiSO 4 , SrCl 2 , YCl 3 , CuCl 2 , CsF, TaF 5 , NbF 5 , LiBr, CaBr 2 , CeBr 3 , SeBr 4 , VBr 3 , MgBr 2 , BaI 2 , MgI 2 , Ba(ClO 4 ) 2 , and Mg(ClO 4 ) 2 .

6. The display device of claim 1 , wherein the coloring agent comprises at least one selected from an anthraquinone-based compound, a phthalocyanine-based compound, an azo-based compound, a perylene-based compound, a xanthene-based compound, a diimmonium-based compound, a dipyrromethene-based compound, a tetraazaporphyrin-based compound, a porphyrin-based compound, a squarylium-based compound, an oxazine-based compound, a triarylmethane-based compound, and a cyanine-based compound.

7. The display device of claim 1 , wherein the light control layer comprises about 0.01 wt % to about 5.00 wt % of the coloring agent with respect to a total content of the light control layer.

8. The display device of claim 1 , wherein the coloring agent has a higher hydrophobicity than the desiccant.

9. The display device of claim 1 , further comprising a barrier wall,

wherein the display panel comprises:

a base layer; and

a display element layer on the base layer and comprising a light emitting area and a non-light-emitting area, and

wherein the barrier wall is on the display element layer, is covered by the light control layer, and overlaps the non-light-emitting area.

10. The display device of claim 1 , further comprising a sensor layer between the display panel and the light control layer,

wherein the sensor layer is directly on the display panel.

11. The display device of claim 1 , wherein the base portion comprises a base resin comprising at least one selected from an acrylate monomer and an epoxy monomer.

12. The display device of claim 11 , wherein the base resin comprises:

about 25 wt % to about 35 wt % of at least one selected from the acrylate monomer and the epoxy monomer,

about 0.01 wt % to about 5.00 wt % of a photoinitiator, and

about 25 wt % to about 35 wt % of a curable resin, and

the remainder of the base resin comprises one or more additives.

13. A display device comprising:

a display panel comprising first, second, and third light emitting elements spaced apart from each other when viewed in a plane, wherein the first, second, and third light emitting elements are to emit lights having different wavelengths from each other; and

a light control layer on the display panel and comprising:

a base portion,

a coloring agent having a maximum absorption wavelength in a wavelength range of about 580 nm to about 600 nm, and

a desiccant.

14. The display device of claim 13 , wherein each of the first, second, and third light emitting elements comprises:

a first electrode;

a hole transport region on the first electrode;

a light emitting layer on the hole transport region;

an electron transport region on the light emitting layer;

a second electrode on the electron transport region; and

a capping layer on the second electrode.

15. The display device of claim 13 , wherein the first light emitting element is to emit a red light, the second light emitting element is to emit a green light, and the third light emitting element is to emit a blue light.

16. The display device of claim 13 , wherein the light control layer overlaps the first, second, and third light emitting elements.

17. The display device of claim 13 , further comprising a barrier wall,

wherein the display panel comprises a display element layer comprising the first, second, and third light emitting elements,

the display element layer comprises:

a light emitting area in which the first, second, and third light emitting elements are disposed, and

a non-light-emitting area around the light emitting area, and

the barrier wall is on the display element layer, is covered by the light control layer, and overlaps the non-light-emitting area.

18. The display device of claim 17 , wherein the barrier wall comprises a black pigment and/or a black dye.

19. The display device of claim 13 , wherein the light control layer comprises about 0.01 wt % to about 5.00 wt % of the desiccant with respect to a total content of the light control layer.

20. The display device of claim 13 , wherein the light control layer comprises about 0.01 wt % to about 5.00 wt % or less of the coloring agent with respect to a total content of the light control layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2021
From: SIM, JEONG MYO; LEE, KYUNGHEE; LEE, MIHWA
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 058130/0603 →
Priority Claims (1)
KR 10-2021-0029711 · Mar 5, 2021 · national
Continuity (1)
Related Publication 20220285652A1 · Sep 8, 2022