Display panel, display apparatus including the same and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9291846-B2
Application number	US-201414455031-A
Country	US
Kind code	B2
Filing date	Aug 8, 2014
Priority date	Feb 27, 2014
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

A display panel includes a base substrate, a gate line disposed under the base substrate and extending in a first direction, a data line disposed under the base substrate and extends in a second direction substantially perpendicular to the first direction, a thin film transistor disposed under the base substrate, and electrically connected to the gate line and the data line, a first electrode disposed under the base substrate and electrically connected to the thin film transistor, an image displaying portion disposed under the first electrode and overlapped with the first electrode, a protecting layer disposed under the image displaying portion, surrounding a lower surface of the image displaying portion and both sides of the image displaying portion in the second direction, and including a protrusion wall protruded in a direction opposite to the base substrate, and an upper polarizer disposed on the base substrate.

First claim

What is claimed is:

1. A display panel comprising:
a base substrate;
a gate line disposed under the base substrate and extending in a first direction;
a data line disposed under the base substrate and extends in a second direction substantially perpendicular to the first direction;
a thin film transistor disposed under the base substrate, and electrically connected to the gate line and the data line;
a first electrode disposed under the base substrate and electrically connected to the thin film transistor;
an image displaying portion disposed under the first electrode and overlapped with the first electrode;
a protecting layer disposed under the image displaying portion, surrounding a lower surface of the image displaying portion and both sides of the image displaying portion in the second direction, and comprising a protrusion wall protruded in a direction opposite to the base substrate; and
an upper polarizer disposed on the base substrate and opposite to the thin film transistor with reference to the base substrate.

2. The display panel of claim 1 , wherein the protrusion wall of the protecting layer overlaps the data line.

3. The display panel of claim 2 , further comprising:
a sealing layer which is disposed under the protecting layer, and contacts a side surface of the image displaying portion in the first direction.

4. The display panel of claim 3 , wherein the protrusion wall of the protecting layer is higher than the sealing layer with reference to the base substrate.

5. The display panel of claim 4 , further comprising:
a lower polarizer which is disposed under the protecting layer and the sealing layer, and contacts the protrusion wall of the protecting layer.

6. The display panel of claim 5 , wherein the protrusion wall is protruded from the sealing layer by less than about 10 micrometers.

7. The display panel of claim 1 , further comprising:
a second electrode disposed between the image displaying portion and the protecting layer.

8. The display panel of claim 1 , further comprising:
a color filter disposed between the base substrate and the first electrode.

9. The display panel of claim 8 , further comprising:
a black matrix which is disposed between the base substrate and the protecting layer, contacts the color filter, and is overlapped with the thin film transistor.

10. The display panel of claim 1 , further comprising:
a color filter which is disposed under the protecting layer, and contacts a side of the protrusion wall of the protecting layer.

11. The display panel of claim 10 , further comprising:
a black matrix which is disposed under the protecting layer, contacts the color filter, overlapped with the thin film transistor, and contacts a side surface of the image displaying portion in the first direction.

12. The display panel of claim 7 , further comprising:
a first insulation layer disposed under the base substrate under which the gate line is disposed, and disposed between the gate line and the data line;
a second insulation layer disposed under the first insulation layer under which the data line is disposed, and between the data line and the first electrode;
a third insulation layer disposed between the first electrode and the image displaying portion; and
a fourth insulation layer disposed between the image displaying portion and the second electrode.

13. The display panel of claim 12 , wherein
the base substrate includes a glass substrate,
an embossing pattern is provided on a lower surface of the base substrate,
the gate line comprises a first gate layer disposed under the lower surface of the base substrate and a second gate layer disposed under the first gate layer, the first gate layer comprises copper oxide, and the second gate layer comprises copper, and
the first insulation layer comprises silicon dioxide.

14. The display panel of claim 13 , wherein
an embossing pattern is provided on a lower surface of the first insulation layer,
the data line comprises a first data layer disposed under the lower surface of the first insulation layer and a second data layer disposed under the first data layer, the first data layer comprises copper oxide, and the second data layer comprises copper, and
the second insulation layer comprises silicon dioxide.

15. A display apparatus comprising:
a display panel which comprises:
a base substrate;
a gate line disposed under the base substrate and extending in a first direction;
a data line disposed under the base substrate and extends in a second direction substantially perpendicular to the first direction;
a thin film transistor disposed under the base substrate, and electrically connected to the gate line and the data line;
a first electrode disposed under the base substrate and electrically connected to the thin film transistor;
an image displaying portion disposed under the first electrode and overlapped with the first electrode; and
a protecting layer disposed under the image displaying portion, surrounding a lower surface of the image displaying portion and both sides of the image displaying portion in the second direction, and comprising a protrusion wall protruded in a direction opposite to the base substrate;
an upper polarizer disposed on the display panel;
a backlight assembly disposed under the display panel to provide light to the display panel;
a lower polarizer disposed between the display panel and the backlight assembly;
a receiving container which receives the display panel, the upper polarizer, the backlight assembly and the lower polarizer;
wherein the protrusion wall of the display panel contacts the lower polarizer, the lower polarizer contacts the backlight assembly, and the backlight assembly contacts the receiving container.

16. The display apparatus of claim 15 , wherein
the receiving container comprises a bottom plate, and a side wall which extends from an edge of the bottom plate and is perpendicular to the bottom plate, and
the side wall contacts boundaries of a lower surface of the base substrate.

17. The display apparatus of claim 16 , further comprises:
a buffer element disposed between the boundaries of the lower surface of the base substrate and the side wall of the receiving container, and comprising an elastic material.

18. A method of manufacturing a display panel comprising:
disposing a first electrode on a base substrate on which a thin film transistor is disposed;
disposing a sacrificial layer on the first electrode;
disposing a second electrode on the sacrificial layer;
disposing a protecting layer including having a protrusion wall protruded along a direction opposite to the base substrate on the second electrode;
removing the sacrificial layer to define a tunnel-shaped cavity between the first electrode and the second electrode;
disposing an image displaying portion in the tunnel-shaped cavity; and
attaching an upper polarizer on the base substrate opposite to the image displaying portion with reference to the base substrate.

19. The method of claim 18 , wherein disposing the protecting layer comprises:
coating a photoresist having a photosensitive organic material on the second electrode;
irradiating the photoresist using a mask having a blocking area, a half area and a transparent area, wherein the blocking area completely blocks light, the half area partially blocks light and the transparent area passes light; and
developing the photoresist which is irradiated to form the protecting layer.

20. The method of claim 18 ,

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Hyung-Guen
• Lee Eung-Gyu
• Kim Jin-Suek
• Park Sae-Ron
• Song Dae-Ho

Classifications

• G02F1/133528

  Polarisers · CPC title

• G02F1/1343

  Electrodes {(reflective electrodes G02F1/133553)} · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/133377 Primary

  Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel · CPC title

• G02F2201/50

  Protective arrangements · CPC title