KR-20260062157-A - DISPLAY DEVICE

Abstract

A display device according to one embodiment may include a display panel comprising an opposing first surface and a second surface, and a heat dissipation member comprising a first heat dissipation layer located on the second surface of the display panel and a second heat dissipation layer located on the first heat dissipation layer.

Inventors

• 김완상
• 박병규
• 정의준
• 최장운

Assignees

• 삼성디스플레이 주식회사

Dates

Publication Date

20260507

Application Date

20241025

Claims (20)

1. A display panel including opposing first and second surfaces; and A display device comprising a heat dissipation member including a first heat dissipation layer located on the second surface of the display panel and a second heat dissipation layer located on the first heat dissipation layer.
2. In Paragraph 1, A display device comprising a plurality of first heat dissipation sheets arranged in a first direction or a second direction intersecting the first direction, wherein the first heat dissipation layer comprises a plurality of first heat dissipation sheets.
3. In paragraph 1, A display device comprising a plurality of second heat dissipation sheets arranged in a first direction or a second direction intersecting the first direction, wherein the second heat dissipation layer comprises a plurality of second heat dissipation sheets.
4. In paragraph 2, The first heat dissipation layer comprises a plurality of first heat dissipation sheets partitioned by a first boundary line extending in the second direction, and A display device comprising a second heat dissipation layer that includes a second heat dissipation sheet covering the first boundary line.
5. In Paragraph 4, A display device in which the edge extending in the first direction of the first heat dissipation sheet is aligned with the edge extending in the first direction of the second heat dissipation sheet.
6. In Paragraph 4, The first heat dissipation layer comprises a plurality of first heat dissipation sheets partitioned by a second boundary line extending in the first direction, and A display device comprising a second heat dissipation layer that includes a second heat dissipation sheet covering the second boundary line.
7. In paragraph 2, The first heat dissipation layer comprises a plurality of first heat dissipation sheets partitioned by a first boundary line extended in the second direction and a second boundary line extended in the first direction. The second heat dissipation sheet above is a display device that does not cover the first boundary line and the second boundary line.
8. In paragraph 2, A display device in which at least one edge of the first heat dissipation sheet is offset from at least one edge of the second heat dissipation sheet.
9. In paragraph 2, The distance between the first heat dissipation sheets adjacent to each other is 3 mm or less, and A display device in which the distance between the second heat dissipation sheets adjacent to each other is 3 mm or less
10. In paragraph 2, A display device comprising a vapor chamber, wherein the first heat dissipation sheet and the second heat dissipation sheet are the above-mentioned first heat dissipation sheet.
11. In paragraph 2, A display device comprising at least one of the first heat dissipation sheet and the second heat dissipation sheet including a pulsating heat pipe.
12. In Paragraph 11, The above-mentioned first heat dissipation sheet includes a first pipe comprising a first straight channel, a first connecting channel, and a first closed channel, and The above-mentioned second heat dissipation sheet includes a second pipe comprising a second straight channel, a second connecting channel, and a second closed channel, and A display device in which the first pipe and the second pipe are sealed closed-loop pulsating heat pipes.
13. In Paragraph 12, A display device comprising at least one of the cross-section of the first straight channel and the cross-section of the second straight channel, including a first region, a second region and a third region having different diameters from each other.
14. In Paragraph 12, A display device in which the extension directions of the first straight channel and the second straight channel are parallel to each other.
15. In Paragraph 12, A display device in which the first straight path and the second straight path intersect each other.
16. In Paragraph 15, The above first straight path extends in the above first direction, and The above second straight path is a display device extending in the above second direction.
17. In Paragraph 12, A display device in which the first straight path and the second straight path are extended diagonally with respect to the first direction and the second direction.
18. In Paragraph 17, A display device in which the extension directions of the first straight channel and the second straight channel are parallel to each other.
19. In Paragraph 17, A display device in which the extension directions of the first straight channel and the second straight channel intersect each other.
20. In Paragraph 1, The above display panel is Substrate; A transistor located on the above substrate; A pixel electrode electrically connected to the above transistor; A light-emitting layer located on the pixel electrode above; and A display device comprising a common electrode located on the light-emitting layer.

Description

Display Device The present disclosure relates to a display device comprising a display panel. Types of display devices include liquid crystal display (LCD), plasma display panel (PDP), organic light emitting diode device (OLED), field effect display (FED), and electrophoretic display device. A light-emitting display device comprises two electrodes and a light-emitting layer located between them, wherein electrons injected from one electrode and holes injected from the other electrode combine in the light-emitting layer to form excitons, and light is emitted as the excitons release energy. The internal temperature of a light-emitting display device increases due to heat generated during operation. As the internal temperature of the display device increases, heat-sensitive components such as the light-emitting layer may deteriorate. As the light-emitting layer deteriorates, the lifespan of the light-emitting display device is shortened, and the display quality may be degraded. FIG. 1 is a schematic plan view of a display device according to one embodiment. FIG. 2 is a schematic cross-sectional view showing a display area of a display device according to one embodiment. FIG. 3 is a schematic side view of a display device according to one embodiment. FIG. 4 is a schematic side view of a heat dissipation member applied to a display device according to one embodiment. Figure 5 is an enlarged view of area A in Figure 4. Figure 6 is a graph showing the heat diffusion effect according to the distance between adjacent heat dissipation sheets of the heat dissipation member according to Figure 5. FIG. 7 is a schematic perspective view of a heat dissipation member applied to a display device according to one embodiment. Figure 8 is a schematic plan view of the heat dissipation member shown in Figure 7. FIG. 9 is a schematic perspective view of a heat dissipation member applied to a display device according to one embodiment. FIG. 10 is a schematic plan view of the heat dissipation member shown in FIG. 7. FIG. 11 is a schematic perspective view of a heat dissipation member applied to a display device according to one embodiment. FIG. 12 is a schematic plan view of the heat dissipation member shown in FIG. 11. Figure 13 is a graph showing the temperature change according to the distance from the heat source when a vapor chamber is used. FIGS. 14 to 21 are schematic exploded perspective views of a heat dissipation member applied to a display device according to embodiments. FIG. 22 is a schematic plan view of a heat dissipation sheet applied to a display device according to one embodiment. FIGS. 23 to 25 are schematic side views of a display device according to embodiments. FIG. 26 is a front view of an electronic device including a display device according to one embodiment. Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification. Furthermore, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and thus the present invention is not necessarily limited to what is illustrated. Thicknesses have been enlarged in the drawings to clearly represent various layers and regions. Additionally, for convenience of explanation, the thickness of some layers and regions has been exaggerated in the drawings. Furthermore, when it is said that a part, such as a layer, membrane, region, or plate, is "on" or "on" another part, this includes not only the case where it is "directly above" the other part, but also the case where there is another part in between. Conversely, when it is said that a part is "directly above" another part, it means that there is no other part in between. Also, saying that a part is "on" or "on" a reference part means that it is located above or below the reference part, and does not necessarily mean that it is located "on" or "on" in the direction opposite to gravity. Furthermore, throughout the specification, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Additionally, throughout the specification, "planar" means when the subject part is viewed from above, and "cross-sectional" means when the cross-section obtained by vertically cutting the subject part is viewed from the side. FIG. 1 is a schematic plan view of a display device according to one embodiment. FIG. 2 is a schematic cross-sectional view illustrating a portion of the display area of a