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EP-4496450-B1 - DISPLAY DEVICE

EP4496450B1EP 4496450 B1EP4496450 B1EP 4496450B1EP-4496450-B1

Inventors

  • HWANG, YONGYEON
  • LEE, KYUNGMIN

Dates

Publication Date
20260506
Application Date
20230509

Claims (15)

  1. A display device comprising: a display panel (10, 70); a bottom chassis (20) disposed on a rear side of the display panel; a middle frame (50, 60, 80) disposed on a lower end of the display panel, and including a plurality of hooks (51); a first frame (110, 210) on which the display panel is seated, and formed in a C-shape to cover upper, left, and right borders of the display panel to cause the middle frame on the lower end of the display panel to be exposed; and a second frame (120, 220) including an assembly groove (121, 221) assembled to the plurality of hooks, and formed in a bar shape to cover a lower border of the display panel by being assembled to the middle frame; wherein the plurality of hooks comprises: a plurality of first hooks (53) assembled to the assembly groove to allow the second frame to be assembled to the middle frame, and a pair of second hooks (55, 65) formed at opposite ends of the middle frame and assembled to opposite ends of the first frame in contact with opposite ends of the second frame together with the assembly groove formed at the opposite ends of the second frame.
  2. The display device of claim 1, wherein a chip-on film, COF, (40) is connected to the lower end of the display panel and configured to transmit a drive signal from a drive printed circuit board (30) to the display panel.
  3. The display device of claim 2, wherein the COF is guided by the middle frame to bend toward the rear side of the display panel in order to prevent the COF from being exposed to the outside, and the second frame is assembled to the middle frame after the COF is bent.
  4. The display device of claim 1, wherein the first frame includes a hook groove (113, 211) formed at the opposite ends of the first frame and in which the pair of second hooks are assembled.
  5. The display device of claim 4, wherein a portion of the pair of the second hooks is assembled into the assembly groove formed at the opposite ends of the second frame, and the remaining portion is assembled into the hook groove, so that when the second frame is assembled to the middle frame, a step between the end of the first frame and the end of the second frame is prevented from occurring.
  6. The display device of claim 1, wherein the middle frame is formed to have a length corresponding to the lower end of the display panel.
  7. The display device of claim 6, wherein the first frame includes an extension (111) extending horizontally from left and right ends of the first frame corresponding to left and right ends of the display panel so as to be assembled to the middle frame.
  8. The display device of claim 7, wherein the extension is extended so that corners of the display panel have a rounded shape.
  9. The display device of claim 7, wherein each of the pair of second hooks is integrally formed, a portion of which is assembled to the second frame, and the remaining portion of which is assembled to the extension.
  10. The display device of claim 1, wherein the middle frame includes an extension (67) extending vertically from left and right ends of the middle frame corresponding to opposite ends of the lower end of the display panel.
  11. The display device of claim 10, wherein the first frame is formed so that left and right ends of the first frame have a length corresponding to left and right ends of the display panel so as to be assembled to the extension.
  12. The display device of claim 11, wherein each of the pair of second hooks is integrally formed, a portion of which is formed on the extension to be assembled to the first frame, and the remaining portion of which is assembled to the second frame.
  13. The display device of claim 1, wherein the assembly groove includes a first assembly groove (123) in which the plurality of first hooks is assembled, and a second assembly groove (125) in which the pair of second hooks is assembled.
  14. The display device of claim 13, wherein the first assembly groove and the second assembly groove are formed by being connected to a single groove.
  15. The display device of claim 13, wherein the first assembly groove is formed in a plurality at positions corresponding to the plurality of first hooks, and the second assembly groove is formed at the opposite ends of the second frame to correspond to the pair of second hooks.

Description

Technical Field The disclosure relates to a display device having an improved structure of a frame on which a display panel is mounted in a bezel-less display device. [Background Art] In general, a display device is a device that displays a screen, such as a monitor, a television (TV), or the like. Display devices use self-emissive display panels, such as organic light-emitting diodes (OLEDs), and non-emissive display panels, such as liquid crystal display (LCD) panels. Recently, bezel-less display devices have become more popular due to their fuller screen and simpler design. A bezel-less display device may include a display panel that displays an image and a frame on which the display panel is mounted. When the display panel is seated on the frame, the frame may form the appearance of a four-sided border of the bezel-less display device. The bottom of the display panel is connected to a chip-on-film (COF) that transmits a drive signal from a drive printed circuit board (PCB) to the display panel. The COF is required to be folded and organized on the back of the display panel so that it is not visible from the exterior of the product. To fold and organize the COF to the back of the display panel, first the frame at the bottom of the display panel needs to be separated from the display panel and spread away, then the COF needs to be inserted into a space between the display panel and the frame, and finally the COF needs to be folded to the back of the display panel, resulting in inconvenience. In addition, the COF may be damaged in the process of organizing the COF. To organize the COF as described above, the frame assembled on the bottom of the display panel is assembled with a screw, so that after the COF is organized, the frame is assembled on the bottom of the display panel. However, since the frame is assembled on the bottom of the display panel by screws, a separate bracket for assembling the screws is required to be pre-assembled to the frame assembled on the bottom of the display panel. In addition, since the frame is assembled with screws to the bottom of the display panel, the screws may be exposed to the outside. CN 113808494 A describes a display device comprising a back plate, a display panel, a frame, a lower frame, a printed circuit board and a plurality of chip-on-films. Disclosure Technical Problem Provided is a display device in which a frame on which a display panel is seated in a bezel-less display device is divided into a first frame forming an upper, left, and right border appearance of the display panel, and a second frame forming a lower border appearance of the display panel. Further, provided is a display device in which a second frame forming a lower border appearance of a display panel is hooked to a lower portion of the display panel. Technical Solution The invention is set out in the appended claims. Advantageous Effects According to various embodiments of the present disclosure, breakage of the COF may be prevented when organizing the COF. Further, by preventing breakage of the COF, quality reliability may be increased and processes may be improved. Further, no screws are used to assemble the frame, thereby providing a design differentiation. Description of Drawings FIG. 1 is a view illustrating a display device according to an embodiment.FIG. 2 is a view illustrating a frame separated from a display panel, according to an embodiment.FIG. 3 is a view illustrating a first frame assembled and a second frame disconnected, according to an embodiment.FIG. 4 is a rear view of the display device shown in FIG. 3.FIG. 5 is a view illustrating the second frame being assembled to a middle frame, according to an embodiment.FIG. 6 is a rear view illustrating the second frame being assembled to the middle frame, according to an embodiment.FIG. 7 is a rear view illustrating the second frame assembled to the middle frame, according to an embodiment.FIG. 8 is an enlarged view of portion A of FIG. 5.FIG. 9 is an enlarged view of portion B of FIG. 5.FIG. 10 is an enlarged view illustrating the second frame and a portion of the second frame, according to an embodiment.FIG. 11 is a view illustrating an assembly groove formed by dividing the assembly groove shown in FIG. 10 into a first assembly groove and a second assembly groove.FIG. 12 is a cross-sectional view illustrating an end of the first frame assembled to a pair of second hooks of the middle frame, according to an embodiment.FIG. 13 is a view illustrating an end of the second frame assembled to the pair of second hooks of the middle frame to which the end of the first frame is assembled, according to an embodiment.FIG. 14 is a cross-sectional view illustrating the ends of the first and second frames assembled on the pair of second hooks of the middle frame, according to an embodiment.FIG. 15 is a view illustrating the frame separated from the display panel, according to an embodiment.FIG. 16 is a view illustrating a first frame assembled