KR-102959970-B1 - FOLDABLE DISPLAY DEVICE

Abstract

A foldable display device may include a display module comprising a first non-folding portion, a second non-folding portion, and a first folding portion between the first non-folding portion and the second non-folding portion; a first support member disposed on the bottom surface of the display module and supporting the first non-folding portion and a second support member supporting the second non-folding portion, having a first opening pattern in an area overlapping with the first folding portion and comprising a glass material; and a second support member disposed below the first support member and supporting the display module.

Inventors

• 조현준
• 김규영
• 김용관
• 류한선
• 이용혁
• 이홍관
• 한소라

Assignees

• 삼성디스플레이 주식회사

Dates

Publication Date

20260507

Application Date

20201222

Claims (20)

1. A display module comprising a first non-folding part, a second non-folding part, and a first folding part between the first non-folding part and the second non-folding part; A first support member disposed on the bottom surface of the above-mentioned display module and comprising a first support member supporting the first non-folding portion and a second support member supporting the second non-folding portion, having a first opening pattern in an area overlapping the first folding portion, comprising a glass material and not comprising metal; and A foldable display device comprising a second support member positioned below the first support member and supporting the display module.
2. In claim 1, the second support member has a second opening pattern, and A foldable display device characterized in that each of the plurality of openings included in each of the first opening pattern and the second opening pattern has a shape among a rectangle, a rhombus, an ellipse, a wavy shape, and a rectangle with rounded corners.
3. A foldable display device according to claim 1, characterized in that the thickness of the first support member is 30 micrometers or more and 500 micrometers or less.
4. A foldable display device according to claim 1, characterized in that the thickness of the first support member is greater than the thickness of the second support member.
5. A foldable display device according to claim 1, wherein the second support member comprises at least one of metal and glass materials.
6. In paragraph 1, A foldable display device characterized by further including a first filler between the display module and the first support member.
7. A foldable display device according to claim 6, characterized in that the first filling material is disposed within the first opening pattern.
8. A foldable display device according to claim 6, further comprising a second filler between the first support member and the second support member.
9. A foldable display device according to claim 1, further comprising a lower film between the display module and the first support member.
10. A foldable display device according to claim 1, further comprising a shock-absorbing member disposed below the second support member.
11. In paragraph 1, the display module is, It further includes a third non-folding part adjacent to the second non-folding part and a second folding part between the second non-folding part and the third non-folding part, A foldable display device characterized in that the first support member has a third opening pattern in an area overlapping with the third support member that supports the third non-folding part and the second folding part.
12. In claim 1, the second support member includes a fourth support member that overlaps with the first support member and a fifth support member that overlaps with the second support member, and A foldable display device characterized in that the fourth support member and the fifth support member are separated from each other.
13. A display module comprising a substrate including a first non-folding portion, a second non-folding portion, and a folding portion between the first non-folding portion and the second non-folding portion; A first support member disposed on the bottom surface of the above-mentioned display module and comprising a first support member supporting the first non-folding part and a second support member supporting the second non-folding part and separated from the first support member, comprising a glass material and not comprising metal; and A foldable display device comprising a second support member disposed below the first support member and supporting the display module.
14. In paragraph 13, the second support member includes a fourth support member overlapping with the first support member and a fifth support member overlapping with the second support member, and A foldable display device characterized in that the fourth support member and the fifth support member are separated from each other.
15. A foldable display device according to claim 13, wherein the second support member comprises at least one of a metal material and a glass material.
16. A display module comprising a first non-folding part, a second non-folding part, and a folding part between the first non-folding part and the second non-folding part; and A support member comprising a first support member that supports the first non-folding part and a second support member that supports the second non-folding part, positioned below the above-mentioned display module, and The above display module includes a substrate, and The above substrate has a first opening pattern in the folding portion and is a foldable display device comprising a glass material and not including metal.
17. delete
18. A foldable display device according to claim 16, characterized in that the thickness of the substrate is 30 micrometers or more and 500 micrometers or less.
19. A foldable display device according to claim 16, characterized in that the first support member and the second support member are separated from each other.
20. A foldable display device according to claim 16, further comprising a filler material between the display module and the support member.

Description

Foldable Display Device The present invention relates to a display device. More specifically, the present invention relates to a foldable display device that can be folded or unfolded. Recently, flexible display devices capable of being transformed into various forms are being developed. Unlike flat panel displays, flexible display devices can be folded, bent, or rolled like paper. Flexible display devices are easy to carry and can improve user convenience. Recently, among flexible display devices, foldable display devices have been gaining attention. Foldable display devices can be repeatedly folded or unfolded. A foldable display device may include a display module having flexible characteristics and a support member disposed on the bottom surface of the display module. The support member has relatively high rigidity and, accordingly, can perform the role of preventing deformation of the display module caused by a user's touch, etc. Typically, metal has been used as the material for support members. However, since metal is relatively heavy, including metal in the support member can lead to a problem where the weight of the foldable display device increases relatively. Furthermore, repeated folding and unfolding of the foldable display device can cause permanent deformation in the support member, resulting in creases forming on the display module. Consequently, the display quality of the device may deteriorate. FIG. 1 is a perspective view showing a unfolded state of a display module included in a foldable display device according to one embodiment of the present invention. Figure 2 is a cross-sectional view showing the display module of Figure 1 in a folded state. Figure 3 is a cross-sectional view taken along line II' of Figure 1. Figure 4 is an enlarged cross-sectional view of area A of Figure 3. FIGS. 5 to 8 are plan views showing a first support member according to an embodiment of the present invention. FIG. 9 is a cross-sectional view showing a foldable display device according to one embodiment of the present invention. FIG. 10 is a cross-sectional view showing a foldable display device according to one embodiment of the present invention. FIG. 11 is a plan view showing a first support member according to one embodiment of the present invention. FIG. 12 is a cross-sectional view showing a foldable display device according to one embodiment of the present invention. FIG. 13 is a cross-sectional view showing a foldable display device according to one embodiment of the present invention. FIGS. 14 and FIGS. 15 are cross-sectional views showing a foldable display device according to an embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. Identical components in the drawings are given the same reference numerals, and redundant descriptions of identical components are omitted. FIG. 1 is a perspective view showing a display module included in a foldable display device according to an embodiment of the present invention in an unfolded state. FIG. 2 is a cross-sectional view showing the display module of FIG. 1 in a folded state. Referring to FIGS. 1 and 2, for convenience of explanation, only the display module (100) included in the foldable display device according to embodiments of the present invention is shown in FIGS. 1 and 2. A display module (100) may include a display surface (101) and a non-display surface (102) opposite to the display surface (101). The display surface (101) may be a surface in the display module (100) where an image is displayed. The non-display surface (102) may be a surface in the display module (100) where an image is not displayed. In one embodiment, an image may be displayed on the non-display surface (102) as well. For example, an image may be displayed on a part of the non-display surface (102). Or, an image may be displayed on the entire non-display surface (102). The display module (100) may have a stacked structure. For example, the display module (100) may include several layers having different functions. Each of the several layers may have flexible characteristics, and accordingly, the display module (100) may have flexible characteristics. The display module (100) may include a first non-folding part (NFA1), a second non-folding part (NFA2), and a first folding part (FA1) located between the first non-folding part (NFA1) and the second non-folding part (NFA2). The display module (100) may not be folded in the first and second non-folding parts (NFA1, NFA2). The display module (100) may have a flat surface in the first and second non-folding parts (NFA1, NFA2). The display module (100) can be folded and unfolded in the first folding section (FA1). The display module (100) can be folded (e.g., the folded state of FIG. 2) or unfolded (e.g., the unfolded state of FIG. 1) in the first folding section (FA1). Additionally, the display module (100) can be folded inwar