KR-102962706-B1 - Display apparatus

KR102962706B1KR 102962706 B1KR102962706 B1KR 102962706B1KR-102962706-B1

Abstract

The present invention provides a display device capable of reducing the possibility of defects occurring during the manufacturing process, comprising: a first substrate; a bank located on the first substrate and including first openings, second openings, third openings, and auxiliary openings, wherein the thickness of the partition defining the first openings, second openings, and third openings is thicker than the thickness of the auxiliary partition located within the auxiliary opening; a first quantum dot layer located within the first openings; and a second quantum dot layer located within the second openings.

Inventors

전시완
김장일
안재헌
이명종
이성연
홍석준

Assignees

삼성디스플레이 주식회사

Dates

Publication Date: 20260508
Application Date: 20210119

Claims (16)

First substrate; A bank located on the first substrate and comprising first openings, second openings, third openings and auxiliary openings, wherein the thickness of the partition defining the first openings, the second openings and the third openings is thicker than the thickness of the auxiliary partition dividing each of the auxiliary openings into a plurality of auxiliary spaces; A first quantum dot layer located within the first openings; and A second quantum dot layer located within the second openings above; A display device having
In paragraph 1, A display device in which the first quantum dot layer converts light of a wavelength belonging to a first wavelength band passing through into light of a wavelength belonging to a second wavelength band, and the second quantum dot layer converts light of a wavelength belonging to a first wavelength band passing through into light of a wavelength belonging to a third wavelength band.
In paragraph 1, A light-transmitting layer located within the aforementioned third openings and allowing incident light to pass through; A display device further comprising
In paragraph 1, A second substrate located below the first substrate such that the above bank is positioned between them; A first pixel electrode corresponding to the first opening, a second pixel electrode corresponding to the second opening, and a third pixel electrode corresponding to the third opening, arranged on the second substrate so as to be spaced apart from each other; A pixel defining film covering the edges of each of the first pixel electrode, the second pixel electrode, and the third pixel electrode, and having an opening that exposes the central portion of the first pixel electrode, an opening that exposes the central portion of the second pixel electrode, and an opening that exposes the central portion of the third pixel electrode; A light-emitting layer positioned on the first to third pixel electrodes and capable of emitting light of a wavelength belonging to a first wavelength band; and A counter electrode located on the light-emitting layer above; A display device having
delete
In paragraph 1, A display device in which the area of each of the plurality of auxiliary spaces is 33% or less of the area of the nearest opening among the first opening, the second opening, and the third opening.
In paragraph 1, A display device in which, when viewed from a direction perpendicular to the first substrate, each of the auxiliary spaces has a polygonal shape with an obtuse interior angle.
In paragraph 1, A display device in which, when viewed from a direction perpendicular to the first substrate, each of the auxiliary spaces has a chamfered shape.
In paragraph 1, A display device in which the first openings, the second openings, and the third openings are located on a plurality of lines, and the auxiliary openings are located between the plurality of lines.
In Paragraph 9, A display device having a combination of the first opening, the second opening, and the third opening repeatedly arranged on each of the plurality of lines.
In Paragraph 10, A display device in which the above combination is a combination in which the first opening, the second opening, and the third opening are arranged sequentially.
In Paragraph 11, A display device in which the center of the first opening on the first line among the plurality of lines is positioned to correspond to the second opening and the third opening on the second line closest to the first line among the plurality of lines.
In Paragraph 9, A display device in which, in a first direction in which each of the plurality of lines is extended, the length of each of the plurality of auxiliary spaces is shorter than the length of each of the first opening, the second opening and the third opening.
In Paragraph 9, A display device in which, in a second direction perpendicular to a first direction in which each of the plurality of lines is extended, the length of each of the plurality of auxiliary spaces is shorter than the length of each of the first opening, the second opening and the third opening.
In paragraph 1, A display device having, when viewed from a direction perpendicular to the first substrate, each of the first openings, the second openings, and the third openings has a polygonal shape with an obtuse interior angle.
In paragraph 1, A display device in which, when viewed from a direction perpendicular to the first substrate, each of the first openings, the second openings, and the third openings has a chamfered shape.

Description

Display apparatus Embodiments of the present invention relate to a display device, and more specifically, to a display device capable of reducing the possibility of defects occurring during the manufacturing process. A display device has multiple pixels. For a full-color display device, multiple pixels can emit light of different colors. To this end, at least some of the pixels of the display device have a color conversion unit. Accordingly, light of a first color generated from the light-emitting unit of some pixels is converted into light of a second color by passing through the corresponding color conversion unit and emitted externally. FIG. 1 is a cross-sectional view schematically illustrating a part of a display device according to one embodiment of the present invention. FIG. 2 is a plan view schematically illustrating a part of the display device of FIG. 1. FIG. 3 is a cross-sectional view schematically illustrating a cross-section of the display device of FIG. 2 taken along the line III-III' of FIG. 2. Figure 4 is a plan view showing an enlarged view of part A of Figure 3. FIG. 5 is a plan view schematically illustrating a part of a display device according to another embodiment of the present invention. FIG. 6 is a cross-sectional view schematically illustrating a cross-section of the display device of FIG. 5 taken along the line VI-VI' of FIG. 5. FIG. 7 is a cross-sectional view schematically illustrating a part of a display device according to another embodiment of the present invention. FIG. 8 is a cross-sectional view schematically illustrating a part of the display device of FIG. 7. The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. In the following embodiments, when various components such as layers, films, regions, and plates are described as being "on" another component, this includes not only cases where they are "directly on" another component, but also cases where other components are interposed between them. Furthermore, for convenience of explanation, the size of components in the drawings may be exaggerated or reduced. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and therefore the present invention is not necessarily limited to what is illustrated. In the following embodiments, the x-axis, y-axis, and z-axis are not limited to three axes in an orthogonal coordinate system and can be interpreted in a broader sense that includes them. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but they may also refer to different directions that are not orthogonal to each other. FIG. 1 is a cross-sectional view schematically illustrating a part of a display device according to one embodiment of the present invention, FIG. 2 is a plan view schematically illustrating a part of the display device of FIG. 1, and FIG. 3 is a cross-sectional view schematically illustrating a cross section of the display device of FIG. 2 taken along the line III-III' of FIG. 2. For reference, FIG. 1 may be understood as a cross section taken along the line II-II' of FIG. 2. The display device according to the present embodiment comprises a second substrate (100) which can be called a lower substrate, a first pixel electrode (311), a second pixel electrode (321) and a third pixel electrode (331) disposed on the second substrate (100), a pixel defining film (150), a first substrate (400) which can be called an upper substrate, and a bank (500). The second substrate (100) may include glass, metal, or polymer resin. The second substrate (100) may include polymer resins such as polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, or cellulose acetate propionate. Of course, the second substrate (100) may have a multilayer structure including two layers each containing such polymer resins and a barrier layer containing an inorganic material (such as silicon oxide, silicon nitride, silicon oxynitride, etc.) interposed between the layers, and various modifications are possible. A first pixel electrode (311), a second pixel electrode (321), and a third pixel electro