Display apparatus

Patent metadata

Field	Value
Publication number	US-11664359-B2
Application number	US-202117189349-A
Country	US
Kind code	B2
Filing date	Mar 2, 2021
Priority date	Jun 30, 2020
Publication date	May 30, 2023
Grant date	May 30, 2023

Abstract

A display apparatus includes a display panel including a first surface and a second surface, where a display area which displays images is arranged in the first surface; a driving panel arranged on the display panel and including a first surface and a second surface; and a filling portion filled between the display panel and the driving panel. The display panel and the driving panel are stacked in a vertical direction in a cross-sectional view, and signal lines of the display panel may be electrically connected to signal lines of the driving panel, respectively, through a contact hole penetrating the display area and the driving panel.

First claim

What is claimed is:

1. A display apparatus comprising:
a display panel comprising a first surface and a second surface opposite to the first surface, wherein a display area which displays images is arranged in the first surface;
a driving panel arranged on the display panel and comprising a first surface and a second surface, the first surface of the driving panel facing the second surface of the display panel, and the second surface of the driving panel being opposite to the first surface of the driving panel; and
a filling portion filled between the display panel and the driving panel,
wherein the display panel and the driving panel are stacked in a vertical direction in a cross-sectional view, and
signal lines of the display panel are electrically connected to signal lines of the driving panel, respectively, through a contact hole penetrating the display panel and the driving panel.

2. The display apparatus of claim 1 , wherein the contact hole includes a plurality of first contact holes and a plurality of second contact holes,
the plurality of first contact holes is defined in the display panel, and
the plurality of second contact holes is defined in the driving panel.

3. The display apparatus of claim 2 , wherein a plurality of first signal lines electrically connected to the display area is arranged on the first surface of the display panel,
a plurality of second signal lines electrically connected to the plurality of first signal lines and a driver electrically connected to the plurality of second signal lines are arranged on the first surface of the driving panel, and
an integrated circuit (IC) electrically connected to the driver is arranged on the second surface of the driving panel.

4. The display apparatus of claim 3 , wherein a first connection portion is arranged on the second surface of the display panel, and is electrically connected to the plurality of first signal lines through the plurality of first contact holes, and
a second connection portion is arranged on the first surface of the driving panel to contact the first connection portion and be electrically connected to the plurality of second signal lines.

5. The display apparatus of claim 4 , wherein a bump is between the first connection portion and the second connection portion.

6. The display apparatus of claim 3 , wherein a plurality of third signal lines is electrically connected to the driver and arranged on the first surface of the driving panel,
a plurality of fourth signal lines is electrically connected to the IC and arranged on the second surface of the driving panel, and
each of the plurality of third signal lines is electrically connected to and each of the plurality of fourth signal lines via each of the plurality of second contact holes.

7. The display apparatus of claim 3 , wherein the driver arranged in the driving panel is configured to apply a signal to a display element arranged in the display area.

8. The display apparatus of claim 1 , wherein the filling portion is filled in a gap between the second surface of the display panel and the first surface of the driving panel.

9. The display apparatus of claim 1 , wherein the display panel overlaps the driving panel in a plan view, and
a size of the driving panel is less than a size of the display panel.

10. The display apparatus of claim 9 , wherein the driving panel comprises a first driving panel and a second driving panel,
the first driving panel is arranged on an upper portion of the display panel, and
the second driving panel is arranged on a lower portion of the display panel in the plan view.

11. The display apparatus of claim 1 , wherein the signal lines of the display panel and the signal lines of the driving panel are arranged on substrates, respectively, the substrates comprising a same material.

Assignees

• Samsung Display Co Ltd

Inventors

• Ahn Yijoon
• Kim Eoksu

Classifications

• H10W90/732

  between stacked chips · CPC title

• H10W90/722

  between stacked chips · CPC title

• H10W74/15

  on active surfaces of flip-chip devices, e.g. underfills · CPC title

• H10W72/073

  of die-attach connectors · CPC title

• H10W72/072

  of bump connectors · CPC title