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KR-102964401-B1 - DISPLAY DEVICE

KR102964401B1KR 102964401 B1KR102964401 B1KR 102964401B1KR-102964401-B1

Abstract

A display device is disclosed. It comprises: a display panel including a one surface for displaying an image and a other surface opposite to the one surface; a panel lower layer disposed on the other surface of the display panel and including a one surface facing the display panel and a other surface opposite to the one surface; and a folding member disposed on the other surface of the panel lower layer, wherein the panel lower layer comprises an unattached portion not attached to the folding member and a protective coating layer disposed on the other surface of the panel lower layer to cover the unattached portion.

Inventors

  • 이정헌

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260513
Application Date
20210511

Claims (20)

  1. A display panel comprising one side for displaying an image and another side opposite to the one side; A panel lower layer disposed on the other surface of the display panel and comprising one surface facing the display panel and another surface opposite to the one surface; and It includes a folding member disposed on the other surface of the lower layer of the panel, and The lower layer of the above panel A display device comprising an unattached portion not attached to the folding member and a protective coating layer disposed on the other surface of the lower layer of the panel to cover the unattached portion.
  2. In Article 1, The above protective coating layer comprises at least one of a slip coating layer and an AS (Anti-Static) coating layer in a display device.
  3. In Article 1, The above protective coating layer comprises an AS coating layer disposed on the other surface of the lower panel layer and a slip coating layer disposed on the AS coating layer, forming a display device.
  4. In Article 1, The above panel lower layer is a display device including a metal plate.
  5. In Article 1, A display device comprising: a hinge member providing a rotation axis; a first base member disposed on one side of the hinge member; a support member superimposed on the first base member and maintaining a constant distance from the rotation axis; a second base member disposed on the other side of the hinge member; and a sliding member connected to the second base member and sliding so as to vary the distance from the rotation axis.
  6. In Article 5, A display device in which the protective coating layer is in close contact with the support member when the display panel is folded, and is separated from the support member when the sliding member moves.
  7. In Article 5, The above protective coating layer is a display device that contacts the second base member when the sliding member moves.
  8. In Article 5, A display device in which the protective coating layer slides while in contact with the second base member when the above display panel is slid.
  9. In Article 8, A display device in which the protective coating layer is located between the panel lower layer and the support member when the display panel is folded, and between the panel lower layer and the second base member when the sliding member moves.
  10. In Article 1, The above display device is a display device having a first state in which the display panel is unfolded flat, a second state in which the display panel is folded so that one side of the display panel is not exposed to the outside, and a third state in which the display panel is slid to expose a part of the one side of the display panel to the outside in the second state.
  11. In Article 10, The above protective coating layer is a display device that contacts the folding member in the third state.
  12. In Article 10, A display device in which the protective coating layer is spread flat in the second state and bent in the third state.
  13. In Article 10, A display device in which the above display panel has a curved portion formed to have curvature in the second state and the third state, wherein the radius of curvature of the curved portion in the second state and the radius of curvature of the curved portion in the third state are different.
  14. In Article 13, A display device having a first radius of curvature in the second state and a second radius of curvature larger than the first radius of curvature in the second state.
  15. In Article 13, The above protective coating layer is a display device located on the curved portion in the third state.
  16. In Article 13, A display device in which the position where the curved portion is formed in the third state is different from the position where the curved portion is formed in the second state.
  17. A display panel comprising one side for displaying an image and another side opposite to the one side; A panel lower layer disposed on the other surface of the above-mentioned display panel and comprising one surface facing the above-mentioned display panel and another surface opposite to the one surface; A base member disposed on the other surface of the lower layer of the panel; A sliding member attached to the other surface of the lower layer of the panel and slidably connected to the base member; and A display device comprising a protective coating layer disposed on the other surface of the lower layer of the panel to contact the base member when the sliding member moves.
  18. In Article 17, The above protective coating layer comprises at least one of a slip coating layer and an AS (Anti-Static) coating layer in a display device.
  19. In Article 17, A display device comprising a support member attached to the other surface of the lower panel layer and spaced apart from the sliding member, wherein the lower panel layer includes an unattached portion that overlaps with the support member but is not attached to the support member, and the protective coating layer is disposed on the other surface of the lower panel layer to cover the unattached portion.
  20. In Article 17, A display device in which the above-mentioned display panel is folded to have a curvature, and the curvature of the above-mentioned display panel varies when the above-mentioned sliding member is slid.

Description

Display Device The present invention relates to a display device. The importance of display devices is increasing along with the development of multimedia. In response to this, various types of display devices, such as Liquid Crystal Displays (LCDs) and Organic Light Emitting Displays (OLEDs), are being used. The importance of display devices is increasing along with the development of multimedia. In response to this, various types of display devices, such as Liquid Crystal Displays (LCDs) and Organic Light Emitting Displays (OLEDs), are being used. Meanwhile, portable electronic devices include display devices for providing images to users. Recently, bendable display devices, foldable display devices, rollable display devices, or sliderable display devices incorporating flexible display panels that can be bent, folded, or rolled are being developed. In designing such display devices, it is important to reduce damage to the flexible display panel and the stress applied to the flexible display panel. FIG. 1 is a perspective view of a display device according to one embodiment of a first state. FIG. 2 is a perspective view of a display device according to one embodiment of a second state. FIG. 3 is a perspective view of a display device according to one embodiment of a third state. Figure 4 is a cross-sectional view of a display module cut along A-A' of Figure 1. Figure 5 is a cross-sectional view of the display panel of Figure 4. Figure 6 is a cross-sectional view taken along B-B' of Figure 1. Figure 7 is a cross-sectional view taken along C-C' of Figure 2. Figure 8 is a cross-sectional view taken along D-D' of Figure 3. FIG. 9 is a cross-sectional view of a display device according to one embodiment that is transitioning from a third state to a second state. FIG. 10 is a cross-sectional view of a display module according to another embodiment. FIG. 11 is a cross-sectional view of a display module according to another 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. Specific embodiments will be described below with reference to the attached drawings. FIG. 1 is a perspective view of a display device according to an embodiment of a first state. FIG. 2 is a perspective view of a display device according to an embodiment of a second state. FIG. 3 is a perspective view of a display device according to an embodiment of a third state. In the following description, the first direction (X), the second direction (Y), and the third direction (Z) intersect each other in different directions. For example, the first direction (X) may be the length direction, the second direction (Y) may be the width direction, and the third direction (Z) may be the thickness direction. The first direction (X), the second direction (Y), and the third direction (Z) may include two or more directions. For example, the third direction (Z) may include an upward direction facing upward on the drawing and a downward direction facing downward on the drawing. However, the above directions should be understood as referring to relative directions and are not limited to the above examples. The display device (1) according to an embodiment of the present invention may include various devices for displaying a screen or image. The display device (1) may include, for example, a smartphone, a mobile phone, a tablet PC, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), a television, a game console, a wristwatch-type electronic device, a head-mounted display, a monitor of a personal computer, a laptop computer, a car navigation system, a car dashboard, a digital camera, a camcorder, an external advertising board, an electronic display board, various medical devices, various inspection devices, various home appliances including a display unit such as a refrigerator or a washing machine, an Internet of Things device, but is not limited thereto. Referring to FIG. 1, the display device (1) may have a rectangular shape in a plane. In one embodime