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KR-20260063771-A - DISPLAY APPARATUS

KR20260063771AKR 20260063771 AKR20260063771 AKR 20260063771AKR-20260063771-A

Abstract

Embodiments of the present disclosure relate to a display device, and more specifically, can provide a display device comprising a substrate, a first flattening layer disposed on the substrate, a second flattening layer located on the first flattening layer, a bank pattern disposed on the second flattening layer, and a spacer, wherein a first encapsulation layer and a third encapsulation layer corresponding to a first protrusion, a second protrusion, a third protrusion, and a fourth protrusion are in contact with each other, and a second encapsulation layer is disposed between a first step portion, a second step portion, a third step portion, a fourth step portion, and a third encapsulation layer to prevent moisture penetration.

Inventors

  • 최원열
  • 이선희
  • 강석현

Assignees

  • 엘지디스플레이 주식회사

Dates

Publication Date
20260507
Application Date
20241031

Claims (12)

  1. A substrate including a light-emitting region and a non-light-emitting region; A buffer layer disposed on the above substrate; A first flattening layer and a second flattening layer disposed on the above buffer layer; A bank pattern disposed on the second planarization layer in the above non-luminous region; A first encapsulation layer superimposed on the upper surface and side of each of the above bank pattern, the first flattening layer, and the second flattening layer; A first protrusion formed at the portion where the upper surface and the side surface of the first flattening layer meet; A second protrusion formed at the portion where the upper surface and the side surface of the second flattening layer meet; A third protrusion formed at the portion where the upper surface and the side surface of the above bank pattern meet; At least a portion of the first bag layer corresponds to the first protrusion, the second protrusion and the third protrusion, and a second bag layer disposed on the first bag layer; and It includes a third bag layer disposed on the second bag layer, and The above third bag layer is a display device that contacts the first bag layer corresponding to the first protrusion, the second protrusion, and the third protrusion.
  2. In paragraph 1, A display device in which the angle formed by the upper surface of the first and second flattening layers and the respective side of the first and second flattening layers is an obtuse angle.
  3. In paragraph 1, A display device in which the angle formed by the upper surface of the first and second flattening layers and the respective side surfaces of the first and second flattening layers is an acute angle.
  4. In paragraph 1, A first step portion formed at the portion where the upper surface of the buffer layer and the side surface of the first flattening layer meet; A second step portion formed at the portion where the upper surface of the first flattening layer and the side surface of the second flattening layer meet; and It further includes a third step portion formed at the portion where the upper surface of the second flattening layer and the side surface of the bank pattern meet; At least a portion of the first packaging layer is a display device corresponding to the first step portion, the second step portion, and the third step portion.
  5. In paragraph 4, The second bag layer is a display device disposed between at least a portion of the first step portion, the second step portion, and the third step portion and the third bag layer.
  6. In paragraph 4, The second packaging layer includes a first pattern portion, a second pattern portion, and a third pattern portion, and A display device wherein the first pattern portion is disposed between the first step portion and the third sealing layer, the second pattern portion is disposed between the second step portion and the third sealing layer, and the third pattern portion is disposed between the third step portion and the third sealing layer.
  7. In paragraph 1, It further includes a spacer disposed on the above bank pattern, and A display device in which the side of the spacer and the side of the bank pattern do not overlap each other.
  8. In Paragraph 7, It further includes a fourth protrusion formed at the portion where the upper surface and side surface of the spacer meet, At least a portion of the first bag layer corresponds to the fourth protrusion, and The above third bag layer is a display device that contacts the above first bag layer corresponding to the above fourth protrusion.
  9. In Paragraph 7, A first step portion formed at the portion where the upper surface of the buffer layer and the side surface of the first flattening layer meet; A second step portion formed at the portion where the upper surface of the first flattening layer and the side surface of the second flattening layer meet; A third step portion formed at the portion where the upper surface of the second flattening layer and the side surface of the bank pattern meet; and It further includes a fourth stepped portion formed at the portion where the upper surface of the bank pattern and the side surface of the spacer meet; At least a portion of the first packaging layer is a display device corresponding to the first step portion, the second step portion, the third step portion, and the fourth step portion.
  10. In Paragraph 9, The second bag layer is a display device disposed between at least some of the first step portion, the second step portion, the third step portion and the fourth step portion and the third bag layer.
  11. In Paragraph 9, The above-mentioned second packaging layer includes a first pattern portion, a second pattern portion, a third pattern portion, and a fourth pattern portion, and A display device wherein the first pattern portion is disposed between the first step portion and the third sealing layer, the second pattern portion is disposed between the second step portion and the third sealing layer, the third pattern portion is disposed between the third step portion and the third sealing layer, and the fourth pattern portion is disposed between the fourth step portion and the third sealing layer.
  12. A substrate including a light-emitting region and a non-light-emitting region; A buffer layer disposed on the above substrate; A first flattening layer and a second flattening layer disposed on the above buffer layer; A first encapsulation layer overlapping the upper surface and side of each of the first flattening layer and the second flattening layer; A first protrusion formed at the portion where the upper surface and the side surface of the first flattening layer meet; A second protrusion formed at the portion where the upper surface and the side surface of the second flattening layer meet; At least a portion of the first bag layer corresponds to the first protrusion and the second protrusion, and a second bag layer disposed on the first bag layer; and It includes a third bag layer disposed on the second bag layer, and The above third bag layer is a display device that contacts the first bag layer corresponding to the first protrusion and the second protrusion.

Description

Display apparatus The embodiments of the present disclosure relate to a display device and a display panel, and more specifically, to a display device and a display panel capable of improving the sealing function of a light-emitting element. An organic light-emitting display device includes an organic light-emitting diode disposed in each of a plurality of subpixels arranged on a display panel, and can display an image by emitting light from each subpixel by controlling the driving current flowing to the organic light-emitting diode through a driving transistor. At this time, an encapsulation layer may be placed on the upper part of the display panel to prevent external moisture or oxygen from penetrating into the light-emitting element. However, as display panels become increasingly thinner, there is a growing need for technology that reduces the thickness of the bezel and removes the dam. FIG. 1 is a system configuration diagram of a display device according to embodiments of the present disclosure. FIG. 2 shows a display panel according to embodiments of the present disclosure. FIG. 3 is a cross-sectional view of a display panel according to embodiments of the present disclosure. FIG. 4 is a cross-sectional view according to one embodiment of the present disclosure. FIGS. 5 to 8 are cross-sectional views illustrating the formation process of one embodiment of FIG. 4. FIG. 9 is a plan view according to one embodiment of FIG. 4. FIG. 10 is a cross-sectional view according to another embodiment of the present disclosure. FIG. 11 is a plan view according to another embodiment of FIG. 10. Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the exemplary drawings. In assigning reference numerals to the components of each drawing, the same components may have the same reference numeral as much as possible, even if they are shown in different drawings. Furthermore, in describing the present disclosure, if it is determined that a detailed description of related known components or functions may obscure the essence of the present disclosure, such detailed description may be omitted. Where terms such as "comprising," "having," or "consisting of" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it may include a plural unless otherwise specified. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used to describe the components of the present disclosure. These terms are used merely to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by such terms. In describing the positional relationship of components, where it is stated that two or more components are "connected," "combined," or "joined," it should be understood that while the two or more components may be directly "connected," "combined," or "joined," they may also be "connected," "combined," or "joined" with other components "intervened." Here, the other components may be included in one or more of the two or more components that are "connected," "combined," or "joined" with one another. In describing the temporal flow relationship regarding components, methods of operation, or methods of production, for example, when the temporal or sequential relationship is described using "after," "following," "next," or "before," it may include cases where the relationship is not continuous unless "immediately" or "directly" is used. Meanwhile, where numerical values or corresponding information regarding a component (e.g., levels, etc.) are mentioned, even without separate explicit notation, the numerical values or corresponding information may be interpreted as including a range of error that may occur due to various factors (e.g., process factors, internal or external shocks, noise, etc.). Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the attached drawings. FIG. 1 is a system configuration diagram of a display device (100) according to embodiments of the present disclosure. Referring to FIG. 1, a display device (100) according to embodiments of the present disclosure may include a display panel (110) and a display driving circuit as components for displaying an image. The display driving circuit may include a data driving circuit (120), a gate driving circuit (130), and a controller (140), etc., as a circuit for driving the display panel (110). The display panel (110) may include a substrate (111) and a plurality of subpixels (SP) disposed on the substrate (111). The substrate (111) may include a display area (DA) capable of displaying an image and a non-display area (NDA) located at the outer edge of the display area (DA). The display area (DA) may also be referred to as the active area, and a plurality of subpixels (SP) for image display may be arranged in the display area (DA). The non-d