Display panel and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11424296-B2
Application number	US-202117179773-A
Country	US
Kind code	B2
Filing date	Feb 19, 2021
Priority date	Mar 18, 2019
Publication date	Aug 23, 2022
Grant date	Aug 23, 2022

Abstract

A display panel includes: an upper display substrate including a plurality of pixel areas arranged in each of a plurality of pixel columns and a light blocking area disposed adjacent to the pixel areas; and a lower display substrate including a plurality of display elements respectively overlapping the pixel areas, wherein the upper display substrate includes: a base substrate; a color filter layer disposed on the base substrate; and a light control layer disposed on the color filter layer and including transmission portions respectively at least partially overlapping first pixel areas arranged in a first one of the pixel columns and first conversion portions respectively at least partially overlapping second pixel areas arranged in a second one of the pixel columns, wherein the light blocking area includes a first light blocking area defined between the transmission portion and the first conversion portion, and a second light blocking area defined between the first conversion portions, and a first shortest distance from the base substrate to a lower surface of a first portion of the light control layer overlapping the first light blocking area is substantially equal to a second shortest distance from the base substrate to a lower surface of a second portion of the light control layer overlapping the second light blocking area.

First claim

What is claimed is:

1. A display panel comprising:
an upper display substrate including a plurality of pixel areas arranged in each of a plurality of pixel columns and a light blocking area disposed adjacent to the pixel areas; and
a lower display substrate comprising a plurality of display elements respectively overlapping the pixel areas,
wherein the upper display substrate comprises:
a base substrate;
a color filter layer disposed on the base substrate; and
a light control layer disposed on the color filter layer and including transmission portions respectively at least partially overlapping first pixel areas arranged in a first one of the pixel columns and first conversion portions respectively at least partially overlapping second pixel areas arranged in a second one of the pixel columns;
wherein the light blocking area includes a first light blocking area defined between the transmission portion and the first conversion portion, and a second light blocking area defined between the first conversion portions, and
wherein a first shortest distance from the base substrate to a lower surface of a first portion of the light control layer overlapping the first light blocking area is substantially equal to a second shortest distance from the base substrate to a lower surface of a second portion of the light control layer overlapping the second light blocking area.

2. The display panel of claim 1 , wherein at least one of the first portion and the second portion, and the transmission portions comprise substantially the same material.

3. The display panel of claim 1 , wherein at least one of the first portion and the second portion comprises scattering particles and is transparent.

4. The display panel of claim 1 , wherein the light control layer further comprises second conversion portions respectively at least partially overlapping third pixel areas arranged in a third one of the pixel columns.

5. The display panel of claim 4 , wherein the light blocking area further comprises a third light blocking area defined between the first conversion portion and the second conversion portion, and
a shortest distance from the base substrate to a lower surface of a third portion of the light control layer overlapping the third light blocking area is substantially equal to the second shortest distance.

6. The display panel of claim 1 , wherein the light blocking area further comprises a fourth light blocking area defined between the transmission portions, and
a shortest distance from the base substrate to a lower surface of a fourth portion of the light control layer overlapping the fourth light blocking area is shorter than the second shortest distance.

7. A display panel comprising:
a base substrate comprising a plurality of pixel areas arranged in each of a plurality of pixel columns and a light blocking area disposed adjacent to the pixel areas;
a plurality of display elements respectively overlapping the pixel areas;
a light control layer disposed on the plurality of display elements and including transmission portions respectively at least partially overlapping first pixel areas arranged in a first one of the pixel columns and first conversion portions respectively at least partially overlapping second pixel areas arranged in a second one of the pixel columns; and
a color filter layer disposed on the light control layer;
wherein the light blocking area includes a first light blocking area defined between the transmission portion and the first conversion portion, and a second light blocking area defined between the first conversion portions,
wherein a thickness of a first portion of the light control layer overlapping the first light blocking area is substantially equal to a thickness of a second portion of the light control layer overlapping the second light blocking area, and
a thickness of a first color filter portion of the color filter layer overlapping the first light blocking area is substantially equal to a thickness of a second color filter portion of the color filter layer overlapping the second light blocking area.

Assignees

• Samsung Display Co Ltd

Inventors

• Joo Sun-Kyu
• Oh Keunchan
• Kim Byung-Chul
• Kim Inok
• Seong Jaemin
• Lee Gakseok
• Jang Jieun
• Song Inseok
• Jang Chang-Soon

Classifications

• H10K59/877

  comprising scattering means · CPC title

• H10K59/8792

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

• H01L27/3288

  Electricity · mapped topic

• H01L27/326

  Electricity · mapped topic

• H01L27/3246

  Electricity · mapped topic