KR-20260066355-A - DISPLAY APPARATUS

KR20260066355AKR 20260066355 AKR20260066355 AKR 20260066355AKR-20260066355-A

Abstract

A display device according to one embodiment of the present specification comprises a substrate including a first region in which a plurality of first subpixels are arranged and a second region surrounding the first region in which a plurality of second subpixels are arranged; an overcoating layer arranged on the substrate and including a base portion and a protrusion protruding from the base and having an inclined side; a plurality of first electrodes arranged on each of the plurality of first subpixels and the plurality of second subpixels and arranged to cover the side of the protrusion and the base portion; a bank arranged on the upper surface of the protrusion and the first electrode and exposing a portion of the first electrode arranged on the base portion; an organic layer arranged on the plurality of first electrodes and the bank; and a second electrode arranged on the organic layer, wherein the angle of inclination of the side of the protrusion of the plurality of first subpixels is greater than the angle of inclination of the side of the protrusion of the plurality of second subpixels.

Inventors

정숙희
이승주
김용민
백정선
심요섭

Assignees

엘지디스플레이 주식회사

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (16)

A substrate comprising a first region in which a plurality of first subpixels are arranged and a second region surrounding the first region in which a plurality of second subpixels are arranged; An overcoating layer disposed on the substrate and comprising a base portion and a protrusion having an inclined side protruding from the base portion; A plurality of first electrodes each disposed in the plurality of first subpixels and a plurality of second subpixels and disposed to cover the side of the protrusion and the base portion; A bank disposed on the upper surface of the above-mentioned protrusion and on the first electrode, and exposing a portion of the first electrode disposed on the base portion; An organic layer disposed on the plurality of first electrodes and the bank; and It includes a second electrode disposed on the above organic layer, and A display device in which the angle of inclination of the side of the protrusion of the plurality of first subpixels is greater than the angle of inclination of the side of the protrusion of the plurality of second subpixels.
In paragraph 1, Each of the plurality of first subpixels and the plurality of second subpixels is, A first light-emitting region corresponding to the area where the first electrode is exposed from the bank; A first non-luminous region surrounding the first luminous region and corresponding to the region where the bank is disposed on the first electrode on the base portion; and It includes a second light-emitting region that surrounds the first non-light-emitting region and corresponds to the side of the protrusion, and A display device in which the area of the second light-emitting region of the plurality of first subpixels on a plane is smaller than the area of the second light-emitting region of the plurality of second subpixels.
In paragraph 2, A display device in which the area of the first light-emitting region of the plurality of first subpixels is larger than the area of the first light-emitting region of the plurality of second subpixels.
In paragraph 2, A display device comprising a plurality of first subpixels and a plurality of second subpixels, each of which further includes a second non-luminous region arranged to correspond to the upper surface of the protrusion and surround the second luminous region.
In paragraph 4, A display device in which the size of the area enclosed by the boundary line between the second light-emitting region and the second non-light-emitting region of the first subpixel on a plane is smaller than the size of the area enclosed by the boundary line between the second light-emitting region and the second non-light-emitting region of the second subpixel.
In paragraph 1, A display device in which the length of the side of the protrusion disposed in the plurality of first subpixels is shorter than the length of the side of the protrusion disposed in the plurality of second subpixels.
In paragraph 1, The lower width of the area where the protrusion corresponding to one first electrode in the plurality of first subpixels is opened is greater than the lower width of the area where the protrusion corresponding to one first electrode in the plurality of second subpixels is opened, and A display device in which the upper width of the area where the protrusion corresponding to one first electrode in the plurality of first subpixels is opened is smaller than the upper width of the area where the protrusion corresponding to one first electrode in the plurality of second subpixels is opened.
In paragraph 1, The upper width of the area where the bank corresponding to one first electrode in the plurality of first subpixels is opened is smaller than the upper width of the area where the bank corresponding to one first electrode in the plurality of second subpixels is opened, and A display device in which the lower width of the area where the bank corresponding to one first electrode in the plurality of first subpixels is opened is larger than the lower width of the area where the bank corresponding to one first electrode in the plurality of second subpixels is opened.
In paragraph 1, The above first region is a planar region, and A display device in which the second region is a curved region in which the slope increases as it moves away from the first region.
A substrate comprising a first region in which a plurality of first subpixels are arranged and a second region surrounding the first region in which a plurality of second subpixels are arranged; An overcoating layer disposed on the substrate and comprising a base portion and a protrusion having an inclined side protruding from the base portion; A plurality of first electrodes each disposed in the plurality of first subpixels and a plurality of second subpixels and disposed to cover the side of the protrusion and the base portion; A bank disposed on the above protrusion and the first electrode, and exposing a portion of the first electrode disposed on the base portion; An organic layer disposed on the plurality of first electrodes and the bank; and It includes a second electrode disposed on the above organic layer, and The above protrusion protrudes at the same height from the base portion in each of the plurality of first subpixels and the plurality of second subpixels, and A display device in which the length of the side of the protrusion disposed in the plurality of first subpixels is shorter than the length of the side of the protrusion disposed in the plurality of second subpixels.
In Paragraph 10, Each of the plurality of first subpixels and the plurality of second subpixels is, A first light-emitting region corresponding to the area where the first electrode is exposed from the bank; A first non-luminous region surrounding the first luminous region and corresponding to the region where the bank is disposed on the first electrode on the base portion; and It includes a second light-emitting region that surrounds the first non-light-emitting region and corresponds to the side of the protrusion, and A display device in which the area of the second light-emitting region of the plurality of first subpixels on a plane is smaller than the area of the second light-emitting region of the plurality of second subpixels.
In Paragraph 11, Each of the plurality of first subpixels and the plurality of second subpixels further includes a second non-luminous region that corresponds to the upper surface of the protrusion and is arranged to surround the second luminous region. A display device in which the size of the area enclosed by the boundary line between the second light-emitting region and the second non-light-emitting region of the first subpixel on a plane is smaller than the size of the area enclosed by the boundary line between the second light-emitting region and the second non-light-emitting region of the second subpixel.
In Paragraph 10, The first electrode of the plurality of first subpixels is arranged to form a first angle from the upper surface of the base portion, and A display device in which the first electrode of the plurality of second subpixels is arranged to form a second angle smaller than the first angle from the upper surface of the base portion.
In Paragraph 10, The lower width of the area where the protrusion corresponding to one first electrode in the plurality of first subpixels is opened is greater than the lower width of the area where the protrusion corresponding to one first electrode in the plurality of second subpixels is opened, and A display device in which the upper width of the area where the protrusion corresponding to one first electrode in the plurality of first subpixels is opened is smaller than the upper width of the area where the protrusion corresponding to one first electrode in the plurality of second subpixels is opened.
In Paragraph 10, The upper width of the area where the bank corresponding to one first electrode in the plurality of first subpixels is opened is smaller than the upper width of the area where the bank corresponding to one first electrode in the plurality of second subpixels is opened, and A display device in which the lower width of the area where the bank corresponding to one first electrode in the plurality of first subpixels is opened is larger than the lower width of the area where the bank corresponding to one first electrode in the plurality of second subpixels is opened.
In Paragraph 10, The above first region is a planar region, and A display device in which the second region is a curved region in which the slope increases as it moves away from the first region.

Description

Display apparatus The present specification relates to a display device, and more specifically, to a display device that can improve display quality by minimizing the difference in brightness between a curved or bent portion and a flat portion. As we enter the full-scale information age, the field of display devices that visually represent electrical information signals is developing rapidly, and research is continuing to improve the performance of various display devices, such as miniaturization, lightweighting, and low power consumption. Among these various display devices, organic light-emitting displays are self-emissive devices that, unlike liquid crystal displays, do not require a separate light source, allowing them to be manufactured in lightweight and thin forms. Furthermore, these displays are not only advantageous in terms of power consumption due to low-voltage driving, but also offer excellent color reproduction, response speed, viewing angle, and contrast ratio (CR), making them promising for use in a wide range of fields. FIG. 1 is a perspective view of a display device according to one embodiment of the present specification. FIG. 2 is a cross-sectional view of a display device according to II-II' of FIG. 1. FIG. 3a is an enlarged cross-sectional view of a single subpixel disposed in a first area of a display device according to one embodiment of the present specification. FIG. 3b is a plan view for illustrating the light-emitting region and non-light-emitting region of a single subpixel disposed in a first region of a display device according to one embodiment of the present specification. FIG. 4 is a cross-sectional view of a display device according to IV-IV' of FIG. 1. FIG. 5a is an enlarged cross-sectional view of a single subpixel placed in a second area of a display device according to one embodiment of the present specification. FIG. 5b is a plan view for illustrating the light-emitting region and non-light-emitting region of a single subpixel disposed in a second region of a display device according to one embodiment of the present specification. FIG. 5c is a cross-sectional view of a single subpixel placed in a second region in a bent state in a display device according to one embodiment of the present specification. FIG. 6 is a cross-sectional view of a display device according to VI-VI' of FIG. 1. The advantages and features of this specification and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, this specification is not limited to the embodiments disclosed below and may be implemented in various different forms; these embodiments are provided merely to ensure that the disclosure of this specification is complete and to fully inform those skilled in the art of the scope of this specification. Shapes, areas, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are exemplary, and this specification is not limited to the depicted details. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of this specification, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise. In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement. In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used. When an element or layer is referred to as "on" another element or layer, it includes cases where another layer or element is placed directly on top of or in between. Additionally, terms such as first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the technical scope of this specification. Throughout the specification, the same reference numerals refer to the same components. The area and thickness of each component shown in the drawings are illustrated for convenience of explanation and are not necessarily limited to the area and thickness of the components illustrated in this specification. The features of each of the various embodiments of this specification may be combined o