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KR-102962701-B1 - Display Panel and Display Device

KR102962701B1KR 102962701 B1KR102962701 B1KR 102962701B1KR-102962701-B1

Abstract

An embodiment of the present invention discloses a display panel comprising: a substrate including a main display area and a corner display area extending from a corner of the main display area; and a plurality of pixels disposed in the main display area and the corner display area of the substrate, wherein the substrate comprises: a first base layer; a first barrier layer disposed on the first base layer; and a second base layer disposed on the first barrier layer, wherein the thickness of the substrate in the corner display area decreases as it moves away from the main display area.

Inventors

  • 신호식
  • 임계환

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260508
Application Date
20220727

Claims (20)

  1. A substrate comprising a main display area and a corner display area extending from a corner of the main display area; and A plurality of pixels arranged in the main display area and the corner display area of the substrate; including The above substrate is, First base layer; A first barrier layer disposed on the first base layer; and A second base layer disposed on the first barrier layer; comprising A display panel in which the thickness of the substrate in the corner display area decreases as it moves away from the main display area.
  2. In paragraph 1, A display panel in which the thickness of the first base layer in the corner display area decreases as it moves away from the main display area.
  3. In paragraph 1, The above substrate is a display panel having a stepped shape in the corner display area.
  4. In paragraph 1, The above corner display area includes a first corner display area adjacent to the main display area and a second corner display area extended from the first corner display area, and A driving circuit is placed in the above-mentioned first corner display area, and A display panel in which a plurality of extension regions are arranged in the second corner display area.
  5. In paragraph 4, The first base layer comprises a first portion disposed in the main display area and a second portion disposed in the first corner display area, and The above second part is a display panel whose thickness decreases as it moves away from the main display area.
  6. In paragraph 5, The above second part is a display panel having a stepped shape.
  7. In paragraph 5, A display panel, wherein the first base layer further comprises a third portion disposed in the second corner display area.
  8. In Paragraph 7, The above third part is a display panel having a thickness smaller than the thickness of the above second part.
  9. In paragraph 4, A display panel having a step shape in a part of the second corner display area that overlaps with the curved area of the cover window, the first base layer.
  10. In paragraph 4, A display panel in which some of the corner pixels placed in the first corner display area overlap at least partially with the driving circuit.
  11. In paragraph 1, A display panel further comprising a material layer disposed in the corner display area and disposed on the lower part of the substrate.
  12. In Paragraph 11, The above material layer is a display panel having a modulus smaller than that of the first base layer.
  13. A substrate comprising a main display area and a corner display area extending from a corner of the main display area; A material layer disposed in the corner marking area and disposed on the lower part of the substrate; and A plurality of pixels arranged in the main display area and the corner display area of the substrate; including The above substrate is, A first base layer disposed in the main display area and comprising a material different from the material layer; A first barrier layer disposed on the first base layer and the material layer; and A second base layer disposed on the first barrier layer; comprising The above material layer is a display panel having a modulus smaller than that of the first base layer.
  14. In Paragraph 13, The first base layer is a display panel whose thickness decreases as it moves away from the main display area in the corner display area.
  15. In Paragraph 13, The first base layer is a display panel having a stepped shape in the corner display area.
  16. In Paragraph 13, The above corner display area includes a first corner display area adjacent to the main display area and a second corner display area extended from the first corner display area, and A driving circuit is placed in the above-mentioned first corner display area, and A plurality of extension regions are arranged in the above second corner display area, and The above material layer overlaps with the first base layer in the first corner display area, a display panel.
  17. Display panel; and Includes a cover window disposed on the above-mentioned display panel; The above display panel is, A substrate comprising a main display area and a corner display area extending from a corner of the main display area; and A plurality of pixels arranged in the main display area and the corner display area of the substrate; including The above substrate is, First base layer; A first barrier layer disposed on the first base layer; and A second base layer disposed on the first barrier layer; comprising A display device in which the thickness of the substrate decreases as it moves away from the main display area.
  18. In Paragraph 17, A display device comprising a first base layer, a first portion disposed in the main display area, and a second portion disposed in the corner display area and having a stepped shape.
  19. In Paragraph 18, The above corner display area includes a first corner display area adjacent to the main display area and a second corner display area extended from the first corner display area, and A driving circuit and the second part of the first base layer are disposed in the first corner display area, and A display device in which a plurality of extension regions are arranged in the second corner display area.
  20. In Paragraph 19, The above cover window includes a central region and an edge region disposed on the outer side of the central region and having a curved surface, and The second corner display area includes a first partial area that overlaps with the edge area of the cover window and a second partial area that overlaps with the center area, and A display device in which the second portion of the first base layer is positioned corresponding to the first portion area.

Description

Display Panel and Display Device Embodiments of the present invention relate to a display panel and a display device equipped with the same, and more specifically, to a display panel with an expanded display area so that an image can be displayed even in side and corner areas, and a display device equipped with the same. Recently, the designs of display devices have become increasingly diverse. For example, curved, foldable, and rollable display devices are being developed. Furthermore, there is a trend toward expanding the display area and shrinking the non-display area. Consequently, various methods are being developed for designing the shapes of display devices. FIG. 1 is a perspective view schematically illustrating a part of a display device according to one embodiment of the present invention. FIGS. 2a, FIGS. 2b, and FIGS. 2c are cross-sectional views schematically illustrating a display device according to one embodiment of the present invention. FIG. 3a is a plan view schematically illustrating a part of a display device according to one embodiment of the present invention. FIG. 3b is an enlarged view illustrating a portion of a display device according to one embodiment of the present invention. FIG. 4a is a plan view schematically illustrating a part of a display device according to one embodiment of the present invention. FIG. 4b is an enlarged view illustrating a portion of a display device according to one embodiment of the present invention. FIGS. 5A and FIGS. 5B are equivalent circuit diagrams schematically showing a pixel circuit that can be applied to a display panel. FIG. 6 is a schematic cross-sectional view of a display panel of one embodiment along the line I-I' or II-II' of FIG. 4b. FIG. 7 is a schematic cross-sectional view of a display panel of one embodiment along the line I-I' or II-II' of FIG. 4b. FIG. 8 is a schematic cross-sectional view of a display panel of another embodiment along the line II-II' of FIG. 4b. FIG. 9 is a schematic cross-sectional view of a display panel of another embodiment along the line I-I' or II-II' of FIG. 4b. FIGS. 10a to 10c are cross-sectional views illustrating a method for manufacturing a display device according to an embodiment of the present invention. 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, so the present invention is not necessarily limited to what is illustrated. In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another component. In the following examples, singular expressions include plural expressions unless the context clearly indicates otherwise. 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 perspective view schematically illustrating a part of a display device (1) according to one embodiment of the present invention, FIG. 2a is a cross-sectional view schematically illustrating a cross-section taken along line A-A' of FIG. 1, FIG. 2b is a cross-sectional view schematically illustrating a cross-section taken along line B-B' of FIG. 1, and FIG. 2c is a cross-sectional view schematically illustrating a cross-section taken along line C-C' of FIG. 1. The display device (1) is a device for displaying video or still images and may be a portable electronic device such as a mobile phone, smartphone, tablet PC, mobile communication terminal, electronic not