Display panel

Patent metadata

Field	Value
Publication number	US-2021391389-A1
Application number	US-202117178182-A
Country	US
Kind code	A1
Filing date	Feb 17, 2021
Priority date	Jun 11, 2020
Publication date	Dec 16, 2021
Grant date	—

Abstract

A display panel includes light emitting elements which generate source light, pixel regions from which light is emitted, a layer including light control patterns, and a layer including light shielding patterns which are in each of the pixel regions and are spaced apart from each other within a respective pixel region, where the light shielding patterns each includes a first light shielding pattern including a light shielding material, and a second light shielding pattern which corresponds to the first light shielding pattern, includes a metal material and is closer to the layer including the light control patterns than the first light shielding pattern.

First claim

1 . A display panel comprising:
a plurality of light emitting elements which generate source light; a first pixel region, a second pixel region and a third pixel region from which light is emitted; a peripheral region adjacent to the first pixel region, the second pixel region and the third pixel region; in order from the plurality of light emitting elements:
a layer including a first light control pattern, a second light control pattern and a third light control pattern which correspond to the first pixel region, the second pixel region and the third pixel region, respectively, and
a layer including a first color filter, a second color filter and a third color filter which correspond to the first light control pattern, the second light control pattern and the third light control pattern, respectively; and
a first divided pattern which transmits the source light, the first divided pattern comprising:
a first pattern corresponding to the peripheral region, and
a second pattern corresponding to the first pixel region and the second pixel regions.

2 . The display panel of claim 1 , wherein each of the first pattern and the second pattern of the first divided pattern has an integrated shape with the third color filter.

3 . The display panel of claim 1 , further comprising a second divided pattern which shields the source light, the second divided pattern comprising:
a third pattern corresponding to the peripheral region, and a fourth pattern corresponding to the third pixel region.

4 . The display panel of claim 3 , wherein each of the third pattern and the fourth pattern of the second divided pattern comprises a black material.

5 . The display panel of claim 3 , wherein the second divided pattern and the first divided pattern are in order from the plurality of light emitting elements.

6 . The display panel of claim 3 , further comprising a first metal pattern which corresponds to the second pattern of the first divided pattern or the fourth pattern of the second divided pattern,
wherein the first metal pattern is closer to the plurality of light emitting elements than both of the second divided pattern and the first divided pattern.

7 . The display panel of claim 6 , wherein the first metal pattern has a mesh shape or a square shape.

8 . The display panel of claim 1 , further comprising:
a boundary between the peripheral region and each of the first pixel region, the second pixel region and the third pixel region, respectively, and a second metal pattern which is extended along the boundary and in a direction away from the peripheral region, wherein the second metal pattern defines a first opening, a second opening and a third opening of the first pixel region, the second pixel region and the third pixel region, at which the first color filter, the second color filter and the third color filter are exposed outside of the second metal pattern, respectively.

9 . The display panel of claim 1 , further comprising in each of the first pixel region, the second pixel region and the third pixel region, a layer including a plurality of metal patterns spaced apart from each other,
wherein the layer including the plurality of metal patterns is closer to the plurality of light emitting elements than each of the first pattern and the second pattern of the first divided pattern.

10 . The display panel of claim 1 , further comprising a third divided pattern which corresponds to the peripheral region and shields the source light,
wherein the third divided pattern is respectively between the first light control pattern, the second light control pattern and the third light control pattern, and the third divided pattern and the first divided pattern are in order from the plurality of light emitting elements.

11 . The display panel of claim 10 , wherein the third divided pattern comprises a black material.

12 . The display panel of claim 1 , wherein:
the source light includes third color light, the first light control pattern converts the third color light to first color light which is different from the third color light, the second light control pattern converts the third color light to second color light which is different from the third color light and the first color light, the third light control pattern transmits the third color light, and the first color filter transmits the first color light, the second color filter transmits the second color light and the third color filter transmits the third color light.

13 . The display panel of claim 1 , wherein the source light includes blue light.

14 . The display panel of claim 1 , wherein the plurality of light emitting elements each comprises:
a first electrode, a second electrode facing the first electrode, and an organic layer which is between the first electrode and the second electrode, the organic layer including an emission layer which generates the source light.

15 . The display panel of claim 1 , wherein
the plurality of light emitting elements comprises a first light emitting element, a second light emitting element and a third light emitting element corresponding to the first pixel region, the second pixel region and the third pixel region, respectively, and the first light emitting element, the second light emitting element and the third light emitting element have an integrated shape.

16 . The display panel of claim 1 , wherein
the first light control pattern comprises a first base resin and a first quantum dot which is in the first base resin and has a size, the second light control pattern comprises a second base resin and a second quantum dot which is in the second base resin and has a size, and the size of the first quantum dot is larger than the size of the second quantum dot.

17 . A display panel comprising:
a plurality of light emitting elements which generate source light; a first pixel region, a second pixel region and a third pixel region from which light is emitted; and in order from the plurality of light emitting elements:
a layer including a first light control pattern, a second light control pattern and a third light control pattern which correspond to the first pixel region, the second pixel region and the third pixel region, respectively,
a color filter layer including a first color filter, a second color filter and a third color filter which correspond to the first light control pattern, the second light control pattern and the third light control pattern, respectively, and
a layer including a plurality of light shielding patterns which are in each of the first pixel region, the second pixel region and the third pixel region and are spaced apart from each other within a respective pixel region,
wherein the plurality of light shielding patterns each comprises in order from the color filter layer:
a first light shielding pattern including a metal material, and
a second light shielding pattern corresponding to the first light shielding pattern and including a light shielding material.

18 . The display panel of claim 17 , wherein:
the source light includes third color light, the first light control pattern converts the third color light to first color light which is different from the third color light, the second light control pattern converts the third color light to second color light which is different from the third color light and the first color light, the third light control pattern transmits the third color light, and the first color filter transmits the first color light, the second color filter t

Assignees

• Samsung Display Co Ltd

Inventors

• Ryu Jang Wi
• Kim Byung-Chul
• Song Inseok
• Ji Halim

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/878

  comprising reflective means · CPC title

• H10K59/877

  comprising scattering means · CPC title

• H10K59/38 Primary

  comprising colour filters or colour changing media [CCM] · CPC title