KR-102963785-B1 - DISPLAY DEVICE

Abstract

The display device may include a display panel comprising a bending area and a non-bending area adjacent to the bending area, a base substrate disposed below the display panel and having a through hole that overlaps the bending area, a conductive portion filling the through hole, a flexible printed circuit board comprising a first surface connected to the conductive portion and a second surface facing the first surface, a first film in contact with the first surface that overlaps the non-bending area, and a protective member in contact with the upper surface of the first film. Accordingly, the size of the bezel area of the display device can be reduced.

Inventors

• 이창무
• 이동현
• 안종인

Assignees

• 삼성디스플레이 주식회사

Dates

Publication Date

20260513

Application Date

20201007

Claims (15)

1. A display panel including a bending area and a non-bending area adjacent to the bending area; A base substrate disposed below the above-mentioned display panel and having a through hole that overlaps the above-mentioned bending area; A conductive part filling the above-mentioned through hole; A flexible printed circuit board comprising a first surface connected to the above-mentioned conductive portion and a second surface opposite to the first surface; A first film in contact with the first surface overlapping the non-bending area; and It includes a protective member in contact with the upper surface of the first film, and A display device characterized by having a gap formed between the flexible printed circuit board and the base board in the bending region.
2. A display device according to claim 1, characterized in that the second surface overlapping the bending area is exposed to the outside.
3. delete
4. In claim 1, the protective member is, A heat dissipation member disposed on the first film; and A display device characterized by further including a buffer member disposed on the heat dissipation member.
5. A display device according to claim 4, further comprising a second film disposed between the buffer member and the base substrate.
6. A display device according to claim 1, characterized in that the base substrate and the flexible printed circuit board comprise the same material.
7. A display device according to claim 6, characterized in that the base substrate and the flexible printed circuit board comprise plastic.
8. A display device according to claim 1, further comprising a driving circuit chip in contact with the second surface that overlaps the non-bending area.
9. A display device according to claim 8, further comprising a cover tape that covers the driving circuit chip and extends along the second surface.
10. A display device according to claim 9, further comprising a printed circuit board spaced apart from the driving circuit chip and in contact with one end of the second surface.
11. In Article 1, An optical member disposed on the above-mentioned display panel; A display device characterized by further including a cover window disposed on the optical member.
12. In claim 11, the cover window is, A display device characterized by including plastic.
13. A display panel including a bending area and a non-bending area adjacent to the bending area; A base substrate disposed below the above-mentioned display panel and having a through hole that overlaps the above-mentioned bending area; A conductive part filling the above-mentioned through hole; A flexible printed circuit board comprising a first surface connected to the above-mentioned conductive portion and a second surface opposite to the first surface; A first film in contact with the first surface overlapping the non-bending area; and It includes a second film in contact with the upper surface of the first film, and A display device characterized by having a gap formed between the flexible printed circuit board and the base board in the bending region.
14. A display device according to claim 13, characterized in that the second surface overlapping the bending area is exposed to the outside.
15. In claim 13, the second film is, A display device characterized by being disposed between the first film and the base substrate.

Description

Display Device The present invention relates to a display device, and more specifically, to a display device including a bending region. In order to implement a large screen through one side of a small portable display device, the size of the transparent area of the window can be large, and the size of the bezel area can be formed small. The bezel area must have a sufficient size so that wiring portions formed at the edges of the display panel or touch sensing structure provided inside the display device and flexible printed circuit boards connected to the wiring portions can be kept from being exposed to the outside. Therefore, there is a limit to reducing the size of the bezel area. Flexible printed circuit boards can be bent to reduce the size of the bezel area. For example, one end of the flexible printed circuit board can be connected to a wiring portion formed at the edge of the display panel, and the other end of the flexible printed circuit board can be connected to a driving circuit chip. When the flexible printed circuit board is bent, the driving circuit chip is located at the bottom of the display panel, and accordingly, the size of the bezel area can also be reduced. When the flexible printed circuit board is bent, the bent portion of the flexible printed circuit board is unstable, resulting in poor process handling, and cracks may occur in the circuit wiring at the bent portion. FIG. 1 is a plan view showing a display device according to one embodiment of the present invention. Figure 2 is a cross-sectional view of the display device of Figure 1 cut along line II'. FIG. 3 is an enlarged cross-sectional view of area 'A' of the display device of FIG. 2. FIG. 4 is a cross-sectional view showing a display device according to one embodiment of the present invention. FIGS. 5 to 8 are cross-sectional views illustrating a method for manufacturing a display device according to an embodiment of the present invention. FIG. 9 is a plan view showing a display device according to one embodiment of the present invention. Hereinafter, a display device and a method for manufacturing a display device according to exemplary embodiments of the present invention will be described in detail with reference to the attached drawings. In the attached drawings, identical or similar reference numerals are used for identical or similar components. FIG. 1 is a plan view showing a display device according to one embodiment of the present invention. Referring to FIG. 1, a display device (100) according to one embodiment of the present invention may include a display area (DA) where an image is displayed and a surrounding area (PA) which is a non-display area adjacent to the display area (DA) and surrounding the display area (DA). A plurality of pixels (PX) including organic light-emitting elements are arranged in a display area (DA) to generate light according to a driving signal. Each pixel (PX) can be arranged in a first direction (D1) and a second direction (D2) orthogonal to the first direction (D1). A peripheral area (PA) is a non-display area that is adjacent to the display area (DA) and can surround the edge of the display area (DA). A circuit structure for driving the pixels (PX) of the display area (DA) can be formed in the peripheral area (PA). The display device (100) may include a bending area (BA) and a non-bending area (NBA). The bending area (BA) may be located adjacent to the non-bending area (NBA). The bending area (BA) may be bent along a bending axis. A flexible printed circuit board (FPCB) can be placed in the bending area (BA) and non-bending area (NBA) of the display device (100). A driving circuit chip (IC) and a printed circuit board (PCB) can be placed in the non-bending area (NBA) of the display device (100). The driving circuit chip (IC) and the printed circuit board (PCB) can be placed spaced apart from each other. A flexible printed circuit board (FPCB) can electrically connect a display device (100) and a printed circuit board (PCB). A driving circuit chip (IC) and a printed circuit board (PCB) can provide a driving signal to the display device (100). The driving signal may refer to various signals that drive the display device (100), such as a driving voltage, a gate signal, or a data signal. Figure 2 is a cross-sectional view of the display device of Figure 1 cut along the line I-I'. Referring to FIG. 2, the display device (100) may include a cover window (270), an adhesive layer (260), an optical member (250), a display panel (240), a base substrate (230), a flexible printed circuit board (FPCB), a first film (210a), a second film (210b), a protective member (220), a driving circuit chip (IC), a printed circuit board (PCB), a cover tape (200), etc. An optical member (250) may be disposed on a display panel (240). Although not shown in FIG. 2, the optical member (250) may include at least one of a phase delay plate and a polarizer. External light incident from outside the cover window (270) be