US-12628524-B2 - Display device and electronic device having the same

US12628524B2US 12628524 B2US12628524 B2US 12628524B2US-12628524-B2

Abstract

A display device includes pixel electrodes disposed on a substrate; a pixel defining layer disposed on the pixel electrodes that include pixel openings overlapping the pixel electrodes in a plan view, respectively; an encapsulation layer disposed on the pixel electrodes and the pixel defining layer; a sensing electrode disposed on the encapsulation layer; a first insulating layer disposed on the sensing electrode that has openings overlapping the pixel openings in a plan view, respectively; and a second insulating layer disposed on the first insulating layer that has a higher refractive index than a refractive index of the first insulating layer, and each of the openings of the first insulating layer includes at least one protruding extension, and protruding directions of the at least one protruding extension formed in each of the openings include at least eight directions.

Inventors

Jung-hyun Cho
Gun Woo Ko
Chi Wook An
Beohm Rock Choi

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20230323
Priority Date: 20220727

Claims (20)

1 . A display device comprising: pixel electrodes disposed on a substrate; a pixel defining layer disposed on the pixel electrodes, the pixel defining layer including pixel openings overlapping the pixel electrodes in a plan view; an encapsulation layer disposed on the pixel electrodes and the pixel defining layer; a sensing electrode disposed on the encapsulation layer; a first insulating layer disposed on the sensing electrode, the first insulating layer has openings overlapping the pixel openings in the plan view, respectively; and a second insulating layer disposed on the first insulating layer, a refractive index of the first insulating layer is smaller than a refractive index of the second insulating layer, wherein each of the openings of the first insulating layer includes protruding extensions, and protruding directions of the protruding extensions formed in each of the openings are oriented in four of eight directions.
2 . The display device of claim 1 , wherein the eight directions include cross-shaped directions and x-shaped directions.
3 . The display device of claim 2 , wherein each of the openings of the first insulating layer has four extensions, the openings include a first opening and a second opening, the four extensions of the first opening protrude in the cross-shaped directions, and the four extensions of the second opening protrude in the x-shaped directions.
4 . The display device of claim 2 , wherein each of the openings of the first insulating layer has two extensions, and four of the openings have eight directions.
5 . The display device of claim 2 , wherein each of the openings of the first insulating layer has one extension, and eight of the openings have eight directions.
6 . The display device of claim 2 , wherein the protruding extensions protruding from some of the openings include first extensions disposed where edges of the some of the openings meet and extend in different directions.
7 . The display device of claim 6 , wherein the protruding extensions protruding from others of the openings further include second extensions disposed at central portions of edges of the others of the openings of the first insulating layer.
8 . The display device of claim 7 , wherein a length of each of the second extensions is equal to or less than a length of each of the first extensions.
9 . The display device of claim 6 , wherein the first extensions include: a first subextension and a second subextension extending in a direction parallel to a first direction; and a third subextension and a fourth subextension extending in a direction parallel to a second direction different from the first direction, an imaginary first line overlapping the first subextension in the plan view and parallel to the first direction and an imaginary second line overlapping the second subextension in the plan view and parallel to the first direction do not overlap, and a third imaginary line overlapping the third subextension in the plan view and parallel to the second direction and a fourth imaginary line overlapping the fourth subextension in the plan view and parallel to the second direction do not overlap.
10 . The display device of claim 2 , wherein lengths of the protruding extensions protruding from the openings are greater than widths of the protruding extensions protruding from the openings, and the widths of the protruding extensions are greater than about 0 μm and less than about 4 μm, and the widths of the protruding extensions decrease away from edges of the openings of the first insulating layer.
11 . The display device of claim 1 , wherein a thickness of the second insulating layer is about 9 μm or more and about 11 μm or less.
12 . The display device of claim 1 , wherein the pixel opening includes edges extending in different directions, and the pixel opening has a polygonal planar shape including at least one chamfered edge.
13 . The display device of claim 1 , wherein the openings of the first insulating layer are larger than the pixel openings on a plane parallel to a surface of the substrate, and edges of the openings of the first insulating layer are disposed outside of edges of the pixel openings.
14 . The display device of claim 1 , wherein a portion of one of the protruding extensions overlaps a portion of the sensing electrode in the plan view.
15 . The display device of claim 14 , wherein the portion of the one of the protruding extensions overlapping the portion of the sensing electrode in the plan view is an end of the extension.
16 . An electronic device comprising: a housing including a rear surface and a side surface; a cover window disposed at an upper portion of the housing; and a display panel disposed at a lower portion of the cover window to include a display area, wherein the display panel includes: pixel electrodes disposed on a substrate; a pixel defining layer disposed on the pixel electrodes, the pixel defining layer including pixel openings overlapping the pixel electrodes in a plan view; an encapsulation layer disposed on the pixel electrodes and the pixel defining layer; a sensing electrode disposed on the encapsulation layer; a first insulating layer disposed on the sensing electrode, the first insulating layer including openings overlapping the pixel openings in the plan view, respectively; and a second insulating layer disposed on the first insulating layer, a refractive index of the first insulating layer is smaller than a refractive index of the second insulating layer, wherein wherein each of the openings of the first insulating layer includes protruding extensions, and protruding directions of the protruding extensions formed in each of the openings are oriented in four of eight directions.
17 . The electronic device of claim 16 , wherein the eight directions include cross-shaped directions and x-shaped directions.
18 . The electronic device of claim 17 , wherein the protruding extensions protruding from some of the openings of the first insulating layer include first extensions disposed where edges of the some of the openings meet and extend in different directions.
19 . The electronic device of claim 18 , wherein the protruding extensions protruding from others of the openings include second extensions disposed at central portions of edges of the others of the openings of the first insulating layer.
20 . The electronic device of claim 16 , wherein a portion of at least one of the protruding extensions overlaps a portion of the sensing electrode in the plan view.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims priority to and benefits of Korean Patent Application No. 10-2022-0093214 under 35 U.S.C. § 119, filed in the Korean Intellectual Property Office on Jul. 27, 2022, the entire contents of which are incorporated herein by reference. BACKGROUND 1. Technical Field Embodiments relate to a display device and an electronic device including the same, and, to a display device having improved transmittance and a small difference in display quality depending on an azimuth angle, and an electronic device including the same. 2. Description of the Related Art A display device serves to display a screen, and may include a liquid crystal display, an organic light emitting diode display, and the like. Such a display device is used in various electronic devices such as mobile phones, navigation units, digital cameras, electronic books, portable game machines, and various terminals. A display device such as an organic light emitting diode display may have a structure in which the display device can be bent or folded using a flexible substrate. In a small electronic device such as a mobile phone, an optical element such as a camera and an optical sensor are formed in a bezel area, which is a periphery of a display area, but a technique capable of positioning a camera or an optical sensor on a rear surface of the display area while increasing a size of a displayed screen and gradually decreasing a size of a surrounding area of the display area is reduced is being developed. The above information disclosed in this background section is only for enhancement of understanding of the background of the described technology, and therefore, it may contain information that does not form the prior art that may already be known to a person of ordinary skill in the art. SUMMARY Embodiments have been made in an effort to provide a display device capable of improving light output efficiency and display quality. Embodiments have been described in an effort to provide a display device having improved transmittance and a small difference in display quality depending on an azimuth angle. An embodiment provides a display device that may include pixel electrodes disposed on a substrate; a pixel defining layer disposed on the pixel electrodes that include pixel openings overlapping the pixel electrodes in a plan view, respectively; an encapsulation layer disposed on the pixel electrodes and the pixel defining layer; a sensing electrode disposed on the encapsulation layer; a first insulating layer disposed on the sensing electrode that has openings overlapping the pixel openings in a plan view, respectively; and a second insulating layer disposed on the first insulating layer that has a higher refractive index than a refractive index of the first insulating layer, wherein each of the openings of the first insulating layer may include at least one protruding extension, and protruding directions of the at least one protruding extension formed in each of the openings include at least eight directions. The at least eight directions may include a substantially cross-shaped direction and a substantially x-shaped direction. Each of the openings of the first insulating layer may have four extensions, each of the openings may include a first opening and a second opening, the four extensions of the first opening may protrude in the substantially cross-shaped direction, and the four extensions of the second opening may protrude in the substantially x-shaped direction. Each of the openings of the first insulating layer may have two extensions, and four of the openings may have eight directions. Each of the openings the first insulating layer may have one extension, and eight of the openings may have eight directions. The extension protruding from each of the openings may include a first extension disposed at a portion where two edges of each of the openings meet and extend in different directions. The extension protruding from each of the openings may further include a second extension disposed at a central portion of an edge of each of the openings of the first insulating layer. A length of the second extension may be substantially equal to or less than a length of the first extension. The first extension may include a first subextension and a second subextension extending in a direction parallel to a first direction; and a third subextension and a fourth subextension extending in a direction parallel to a second direction different from the first direction, an imaginary first line overlapping the first subextension in a plan view and parallel to the first direction and an imaginary second line overlapping the second subextension in a plan view and parallel to the first direction may not overlap, and a third imaginary line overlapping the third subextension in a plan view and parallel to the second direction and a fourth imaginary line overlapping the fourth subextension in a plan view and paral