KR-20260065053-A - DISPLAY DEVICE, MANUFACTURING METHOD OF THE SAME AND ELECTRONIC DEVICE

KR20260065053AKR 20260065053 AKR20260065053 AKR 20260065053AKR-20260065053-A

Abstract

A display device, a method for manufacturing a display device, and an electronic device are provided. A display device according to one embodiment may include a substrate, a pixel electrode and a common electrode disposed on the substrate, a first organic layer disposed on the pixel electrode and the common electrode and having a first aperture region, a first lower connecting electrode disposed on the first organic layer and electrically connected to the pixel electrode, a second lower connecting electrode electrically connected to the common electrode on the first organic layer, a first protective layer covering the first lower connecting electrode and the second lower connecting electrode, a reflective layer disposed on the first protective layer and overlapping with an inclined surface of the first organic layer, a second protective layer covering the reflective layer, a second organic layer disposed in the first aperture region, a light-emitting element disposed on the second organic layer and including a semiconductor stack, a first contact electrode and a second contact electrode, a first upper connecting electrode connecting the first contact electrode of the light-emitting element and the first lower connecting electrode, and a second upper connecting electrode connecting the second contact electrode and the second lower connecting electrode.

Inventors

엄기창
손경락
양희원
이재필

Assignees

삼성디스플레이 주식회사

Dates

Publication Date: 20260508
Application Date: 20241031

Claims (20)

Substrate; Pixel electrodes and common electrodes disposed on the above substrate; A first organic layer disposed on the pixel electrode and the common electrode and having a first opening region; A first lower connecting electrode disposed on the first organic layer and electrically connected to the pixel electrode, and a second lower connecting electrode electrically connected to the common electrode on the first organic layer; A first protective layer covering the first lower connecting electrode and the second lower connecting electrode; A reflective layer disposed on the first protective layer and overlapping with the inclined surface of the first organic layer; A second protective layer covering the above-mentioned reflective layer; A second organic layer disposed in the first opening region; A light-emitting element disposed on the second organic layer and comprising a semiconductor stack, a first contact electrode and a second contact electrode; and A display device comprising a first upper connecting electrode connecting the first contact electrode of the light-emitting element and the first lower connecting electrode, and a second upper connecting electrode connecting the second contact electrode and the second lower connecting electrode.
In Article 1, The above reflective layer is a display device surrounding the light-emitting element.
In Article 2, A display device in which one end of the above-mentioned reflective layer is positioned further below the lower part of the above-mentioned light-emitting element.
In Article 1, A display device in which a portion of the above-mentioned reflective layer overlaps with the above-mentioned second organic layer.
In Article 1, A display device in which the upper part of the above-mentioned reflective layer is positioned higher than the active layer of the above-mentioned light-emitting element.
In Article 1, A display device comprising a first reflective film disposed on the pixel electrode and a second reflective film disposed on the common electrode.
In Article 6, The first lower connecting electrode extends from the first organic layer to the upper surface of the first reflective film, and The second lower connecting electrode is a display device extending from the first organic layer to the upper surface of the second reflective film.
In Article 6, The first protective layer and the second protective layer have a first contact hole exposing the first lower connecting electrode on the upper surface of the first organic layer and a second contact hole exposing the second lower connecting electrode on the upper surface of the first organic layer, The first upper connecting electrode contacts the first lower connecting electrode through the first contact hole. The second upper connecting electrode is a display device that contacts the second lower connecting electrode through the second contact hole.
In Article 1, The above light-emitting element A conductive layer disposed between the organic layer and the semiconductor stack; and It further includes a protective film disposed on one side and sides of the conductive layer and on the sides of the semiconductor stack, and A display device wherein the first contact electrode is disposed on the protective film and connected to the conductive layer exposed without being covered by the protective film, and the second contact electrode is disposed on the protective film and disposed in a hole penetrating the conductive layer and a part of the semiconductor stack.
In Article 9, The above semiconductor stack includes a first semiconductor layer, an active layer, and a second semiconductor layer stacked in order, A display device wherein the first contact electrode and the second contact electrode are disposed on the entire side surface of the conductive layer and the first semiconductor layer and the entire side surface of the active layer, and disposed on a part of the side surface of the second semiconductor layer.
In Article 10, The first contact electrode and the second contact electrode are a display device in contact with the first protective layer.
Substrate; Pixel electrodes and common electrodes disposed on the above substrate; A first reflective film disposed on the pixel electrode and a second reflective film disposed on the common electrode; A first organic layer disposed on the pixel electrode and the common electrode and having a first opening region; A first protective layer disposed on the first organic layer; A reflective layer disposed on the first protective layer and overlapping with the inclined surface of the first organic layer; A second protective layer covering the above-mentioned reflective layer; A second organic layer disposed in the first opening region; A light-emitting element disposed on the second organic layer and comprising a semiconductor stack, a first contact electrode and a second contact electrode; and It includes a first upper connecting electrode connecting the first contact electrode of the light-emitting element and the pixel electrode, and a second upper connecting electrode connecting the second contact electrode and the common electrode. The first protective layer and the second protective layer have a first contact hole exposing the first reflective film on the upper surface of the first organic layer and a second contact hole exposing the common electrode on the upper surface of the first organic layer, A display device in which the first upper connecting electrode contacts the first reflective film through the first contact hole, and the second upper connecting electrode contacts the second reflective film through the second contact hole.
Substrate; Pixel electrodes disposed on the above substrate; A first organic layer disposed on the pixel electrode and having a first opening region; A first lower connecting electrode and a second lower connecting electrode disposed on the first organic layer and electrically connected to the pixel electrode; A first protective layer covering the first lower connecting electrode and the second lower connecting electrode; A reflective layer disposed on the first protective layer and overlapping with the inclined surface of the first organic layer; A second protective layer covering the above-mentioned reflective layer; A second organic layer disposed in the first opening region; A light-emitting element disposed on the second organic layer and including a contact electrode; A first upper connecting electrode and a second upper connecting electrode connecting the contact electrode of the light-emitting element and the first lower connecting electrode and the second lower connecting electrode; and A display device comprising a common electrode disposed on top of the light-emitting element.
In Article 13, A display device comprising a reflective film disposed on the pixel electrode.
In Article 14, The first lower connecting electrode and the second lower connecting electrode are a display device extending to the upper surface of the reflective film on the first organic layer.
In Article 15, The first protective layer and the second protective layer have a contact hole that exposes the first lower connecting electrode on the upper surface of the first organic layer, and The first upper connecting electrode is a display device that contacts the first lower connecting electrode through the first contact hole.
A step of forming a pixel electrode and a common electrode on a circuit board, and forming a first reflective film on the pixel electrode and a second reflective film on the common electrode; A step of forming a first organic layer disposed on the pixel electrode and the common electrode and having a first opening region; A step of forming a first lower connecting electrode disposed on the first organic layer and electrically connected to the pixel electrode, and a second lower connecting electrode electrically connected to the common electrode on the first organic layer; A step of forming a first protective layer covering the first lower connecting electrode and the second lower connecting electrode, a reflective layer disposed on the first protective layer and overlapping with the inclined surface of the first organic layer, and a second protective layer covering the reflective layer; A step of forming a second organic layer in the first opening region and placing a light-emitting element on the second organic layer; and A method for manufacturing a display device comprising the step of forming a first upper connecting electrode connecting the first contact electrode of the light-emitting element and the first lower connecting electrode, and a second upper connecting electrode connecting the second contact electrode and the second lower connecting electrode.
In Article 17, In the step of forming the second protective layer, A method for manufacturing a display device that forms a contact hole through which a lower connecting electrode is exposed by penetrating the first protective layer and the second protective layer.
In Article 18, In the step of forming a first upper connecting electrode connecting the first contact electrode of the light-emitting element and the first lower connecting electrode, and a second upper connecting electrode connecting the second contact electrode and the second lower connecting electrode, A method for manufacturing a display device in which the first upper connecting electrode contacts the first lower connecting electrode through the contact hole.
It includes a display device that displays images, and The above display device is, Substrate; Pixel electrodes and common electrodes disposed on the above substrate; A first organic layer disposed on the pixel electrode and the common electrode and having a first opening region; A first lower connecting electrode disposed on the first organic layer and electrically connected to the pixel electrode, and a second lower connecting electrode electrically connected to the common electrode on the first organic layer; A first protective layer covering the first lower connecting electrode and the second lower connecting electrode; A reflective layer disposed on the first protective layer and overlapping with the inclined surface of the first organic layer; A second protective layer covering the above-mentioned reflective layer; A second organic layer disposed in the first opening region; A light-emitting element disposed on the second organic layer and comprising a first contact electrode and a second contact electrode; and An electronic device comprising a first upper connecting electrode connecting the first contact electrode of the light-emitting element and the first lower connecting electrode, and a second upper connecting electrode connecting the second contact electrode and the second lower connecting electrode.

Description

Display device, manufacturing method of the same and electronic device The present invention relates to a display device, a method for manufacturing a display device, and an electronic device. As the information society develops, the demand for display devices to display images is increasing in various forms. Display devices may be flat panel displays such as Liquid Crystal Displays, Field Emission Displays, and Light Emitting Displays. The light-emitting display device may include an organic light-emitting display device comprising an organic light-emitting diode element as a light-emitting element, and a micro light-emitting display device comprising a micro light-emitting diode element (hereinafter referred to as a micro light-emitting element) as a light-emitting element. Since the micro light-emitting diode element is made of inorganic material, it has the advantage of having a long lifespan with fewer degradation issues compared to organic light-emitting diode elements. FIG. 1 is a perspective view showing a display device according to one embodiment. FIG. 2 is a layout diagram showing a display device according to one embodiment. FIG. 3 is a block diagram showing a display device according to one embodiment. FIG. 4 is an equivalent circuit diagram showing a subpixel according to one embodiment. FIG. 5 is a layout diagram showing pixels of a display area according to one embodiment. FIG. 6 is a cross-sectional view showing an example of a cross-section of a display panel corresponding to the line I-I' of FIG. 5. Figure 7 is a cross-sectional view showing in detail an example of area A of Figure 6. Figure 8 is an enlarged view of a part of Figure 7. Figure 9 is a cross-sectional view showing another example of area A of Figure 6 in detail. Figure 10 is a cross-sectional view showing another example of area A of Figure 6 in detail. FIG. 11 is an image showing a cross-section of a display panel according to a conventional embodiment. FIG. 12 is a layout diagram showing pixels of a display area according to another embodiment. FIG. 13 is a cross-sectional view showing an example of a cross-section of a display panel corresponding to the line I2-I2' of FIG. 12. FIG. 14 is a cross-sectional view showing in detail an example of region B of FIG. 13. FIG. 15 is a flowchart showing a method for manufacturing a display device according to one embodiment. FIGS. 16 to 25 are exemplary drawings for explaining a method of manufacturing a display device according to one embodiment. FIG. 26 is an example drawing showing a smart watch including a display device according to one embodiment. FIGS. 27 and FIGS. 28 are exemplary drawings showing a virtual reality device including a display device according to one embodiment. FIG. 29 is an exemplary drawing showing a virtual reality device including a display device according to another embodiment. FIG. 30 is an exemplary drawing showing an automobile instrument panel and center fascia including display devices according to one embodiment. FIG. 31 is an exemplary drawing showing a transparent display device including a display device according to one embodiment. The advantages 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 accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. When elements or layers are referred to as being "on" another element or layer, this includes cases where another layer or element is interposed directly on or in the middle of another element. Throughout the specification, the same reference numerals refer to the same components. Shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings for describing embodiments are exemplary and therefore the invention is not limited to the depicted details. The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship. Specific embodiments will be described below with reference to the attached drawings. FIG. 1 is a perspective view showing a display device according to one embodiment. Referring to FIG. 1, the display device (10) is a device for displaying video or still images and can be used as a display screen for various products such as televisions, laptops, monitors, billboards, and the Internet of Things (IOT), as well as portable electronic devices such as mobile