Display device and multi-screen display device using the same

Patent metadata

Field	Value
Publication number	US-10468396-B2
Application number	US-201715798960-A
Country	US
Kind code	B2
Filing date	Oct 31, 2017
Priority date	Dec 30, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

Disclosed is a display device and a multi-screen display device using the same, which include a minimized bezel area. The display device includes a display substrate including a plurality of subpixels, respectively provided in a plurality of pixel areas defined by a plurality of data lines and a plurality of gate lines, and a data pad part connected to each of the plurality of data lines in a one-to-one relationship and a data routing film adhered to the data pad part, the data routing film including a plurality of data routing lines respectively connected to the plurality of data lines. The data routing film is closely adhered to the display substrate to surround the data pad part, one side of the display substrate, and a rear surface of the display substrate overlapping the data pad part.

First claim

What is claimed is:

1. A display device comprising:
a display substrate including a plurality of subpixels, respectively provided in a plurality of pixel areas defined by a plurality of data lines and a plurality of gate lines, and a data pad part connected to each of the plurality of data lines in a one-to-one relationship, each subpixel including:
a passivation layer,
a light emitting device on the passivation layer,
a pixel electrode, and
a common electrode;

a planarization layer covering the passivation layer and the light emitting device;
a data routing film adhered to the data pad part, the data routing film including a plurality of data routing lines respectively connected to the plurality of data lines;
wherein the data routing film has a first area physically adhered to a portion of the data pad part, a second area physically adhered to a first side of the display substrate, and a third area physically adhered to a rear surface of the display substrate overlapping the data pad part; and
wherein the planarization layer is positioned between the pixel electrodes and the passivation layer and between the common electrodes and the passivation layer.

2. The display device of claim 1 , wherein the data routing film further comprises a light blocking layer.

3. The display device of claim 1 , further comprising: a gate routing film including a plurality of gate routing lines respectively connected to the plurality of gate lines,
wherein
the display substrate further comprises a gate pad part connected to each of the plurality of gate lines in a one-to-one relationship, and
the gate routing film having a first area adhered to the display substrate to cover a portion of the gate pad part, a second area adhered to a second side of the display substrate, the second side of the display substrate orthogonal to the first side, and a third area adhered to the rear surface of the display substrate, the first area of the gate routing film opposite the third area on the display substrate.

4. The display device of claim 3 , wherein the gate routing film further comprises a light blocking layer.

5. The display device of claim 3 , wherein a corner of the display substrate surrounded by each of the data routing film and the gate routing film is chamfered by a certain angle or a certain length.

6. The display device of claim 3 , wherein each of the data routing film and the gate routing film comprises:
the first area having a first width; and
the second area having a second width different from the first width.

7. The display device of claim 6 , wherein the second width is progressively narrowed in a direction from the first area to the third area.

8. The display device of claim 6 , further comprising:
a first flexible printed circuit film adhered to the third area of the data routing film;
a second flexible printed circuit film adhered to the third area of the gate routing film; and
a display driving circuit unit connected to the first flexible printed circuit film and the second flexible printed circuit film.

9. The display device of claim 6 , wherein each of the data routing film and the gate routing film further comprises:
at least one first half cutting line provided in a boundary portion between the first area and the second area, and at least one second half cutting line provided in a boundary portion between the second area and the third area, wherein at least one first half cutting line is concavely provided in the data routing film or the gate routing film, and at least one second half cutting line is concavely provided in the data routing film or the gate routing film.

10. The display device of claim 6 , wherein
the data pad part includes a plurality of data pads, the first width of the first area of the data routing film is set to equal to or more than a length between a first data pad connected to a first data line and a last data pad connected to a last data line and to less than a long side length of the display substrate parallel to a lengthwise direction of the gate lines.

11. The display device of claim 6 , wherein
the gate pad part includes a plurality of gate pads, the first width of the first area of the gate routing film is set to equal to or more than a length between a first gate pad connected to a first gate line and a last gate pad connected to a last gate line and to less than a short side length of the display substrate parallel to a lengthwise direction of the data lines.

12. The display device of claim 3 , wherein each of the data routing film and the gate routing film comprises:
a base film including a flexible material; and
a line layer including a plurality of routing lines provided on a first surface of the base film.

13. The display device of claim 12 , wherein each of the data routing film and the gate routing film further comprises a light blocking layer provided between the first surface of the base film and the line layer, or provided on a second surface opposite to the first surface of the base film.

14. The display device of claim 12 , wherein the base film is black colored.

15. The display device of claim 14 , wherein
each of the data routing film and the gate routing film further comprises a plurality of terminal patterns provided on a second surface opposite to the first surface of the base film to overlap an edge of each of the plurality of routing lines, and
the plurality of terminal patterns are respectively connected to the plurality of routing lines through a plurality of via holes provided in the base film.

16. The display device of claim 12 , wherein each of the data routing film and the gate routing film further comprises:
an insulation layer which is provided on the first surface of the base film to cover the line layer.

17. The display device of claim 16 , wherein
the insulation layer is provided in an area other than an edge of the base film.

18. The display device of claim 3 , wherein
the display substrate includes a base plate, the gate routing film is bent in a shape matching one edge of the base plate and is adhered to the one edge of the base plate.

19. The display device of claim 1 , wherein the display substrate further comprises:
a first display area and a second display area surrounding the first display area;
a plurality of first unit pixels provided in the first display area, each first unit pixel including a first group of subpixels of the plurality of subpixels; and
a plurality of second unit pixels provided in the second display area overlapping an edge of the display substrate, each second unit pixel including a second group of subpixels of the plurality of subpixels and having a size less than a size of each of the first unit pixels.

20. The display device of claim 19 , wherein
the plurality of first unit pixels are arranged at a reference pixel pitch, and
a distance between a center of each of the plurality of second unit pixels and an outer surface of the display substrate is equal to or less than half of the reference pixel pitch.

21. The display device of claim 19 , wherein
the first group of subpixels of the plurality of first unit pixels and the second group of subpixels of the plurality of second unit pixels each comprise first to third subpixels, and
the first to third subpixels each comprise:
a pixel circuit connected to a corresponding data line and a corresponding gate line, the pixel circuit including a driving thin film transistor (TFT),
the passivation layer covering the

Assignees

• Lg Display Co Ltd

Inventors

• Kim Hanseok
• Kim Jinyeong
• Park Jaewoo

Classifications

• G09G2300/046

  with an emissive area and a light-modulating area combined in one pixel · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2300/026

  Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions · CPC title

• G09G2300/023

  Display panel composed of stacked panels · CPC title

• G09G3/3426

  the different display panel areas being distributed in two dimensions, e.g. matrix · CPC title