Display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10503025-B2
Application number	US-201816197449-A
Country	US
Kind code	B2
Filing date	Nov 21, 2018
Priority date	Oct 1, 2012
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

In a display device having high reliability, even if being a narrow framing type, and a method for manufacturing thereof, having a display panel, being made up with a first substrate 101 and a second substrate 201, which are adhered with using a seal 301, a main SOC 302 is disposed like a wall, on a peripheral end portion of the first substrate 101 and the second substrate 201, and the seal 301 is disposed inwardly of the main SOC 302. Also, in a method for manufacturing thereof, the main SOC 302 is formed in a region including a cutting plane between the display panel regions neighboring with, and on the cutting plane is made the cutting thereof.

First claim

What is claimed is:

1. A liquid crystal display device comprising:
a first substrate having a first alignment film;
a second substrate having a second alignment film;
a driver circuit; and
a seal contacting the first alignment film and the second alignment film,
wherein
the first substrate has a first region and a second region,
the first region is a region overlapping with an entire of the second substrate,
the second region is a region exposed from the second substrate,
a border between the first region and the second region is a first outside edge of the second substrate,
the driver circuit is mounted on the second region,
in the first region, the first substrate has a second outside edge, a third outside edge parallel to the second outside edge, and the fourth outside edge parallel to the border,
the first alignment film overlaps with the second outside edge, the third outside edge and the fourth outside edge in the first region, and
the first alignment film does not overlap an area where the driver circuit is provided in the second region.

2. The liquid crystal display device according to claim 1 , wherein
the second substrate has a second outside edge, a third outside edge parallel to the second outside edge, and a fourth outside edge parallel to the first outside edge,
the second outside edge of the first substrate overlaps the second outside edge of the second substrate,
the third outside edge of the first substrate overlaps the third outside edge of the second substrate,
the fourth outside edge of the first substrate overlaps the fourth outside edge of the second substrate, and
the first alignment film overlaps with the second outside edge of the second substrate, the third outside edge of the second substrate, and the fourth outside edge of the second substrate in the first region.

3. The liquid crystal display device according to claim 1 , wherein
an end portion of the first alignment film along the border in the first region does not overlap with the border.

4. The liquid crystal display device according to claim 1 , wherein
the first substrate has a display region and a frame portion outside of the display region in the first region,
the seal is provided on the frame region,
an end portion of the first alignment film along the border is between the border and the display region.

5. A liquid crystal display device comprising:
a first substrate having a first alignment film;
a second substrate having a second alignment film;
a driver circuit; and
a seal contacting the first alignment film and the second alignment film,
wherein
the first substrate has a first region and a second region,
the first region is a region overlapping with an entire of the second substrate,
the second region is a region exposed from the second substrate,
a border between the first region and the second region is a first outside edge of the second substrate,
the driver circuit is mounted on the second region,
in the first region, the first substrate has a second outside edge, a third outside edge parallel to the second outside edge, and the fourth outside edge parallel to the border,
the first alignment film overlaps with the second outside edge, the third outside edge and the fourth outside edge in the first region, and
the first alignment film does not overlap the second region.

6. The liquid crystal display device according to claim 1 , wherein
the first substrate has a glass substrate and an organic passivation film between the glass substrate and the first alignment film,
grooves are formed on the organic passivation film, and
the grooves overlap the seal in the first region.

7. The liquid crystal display device according to claim 6 , wherein
the first substrate has gate wirings and a gate insulating film,
the gate wirings are located between the glass substrate and the gate insulating film,
the gate insulating film is between the glass substrate and the organic passivation film,
the gate wirings overlap the seal, and
the grooves and the gate wiring overlap with each other.

8. The liquid crystal display device according to claim 6 , wherein
the first substrate has drain wirings and an inorganic passivation film,
the drain wirings are located between the glass substrate and the inorganic passivation film,
the inorganic passivation film is between the glass substrate and the organic passivation film,
the drain wirings overlap the seal,
the drain wirings do not overlap the grooves,
the grooves expose the inorganic passivation film between two adjacent drain wirings.

9. The liquid crystal display device according to claim 7 , wherein
the first substrate has drain wirings and an inorganic passivation film,
the drain wirings are located between the gate insulating film and the inorganic passivation film,
the inorganic passivation film is between the gate insulating film and the organic passivation film,
the drain wirings overlap the seal,
the drain wirings do not overlap the grooves,
the grooves expose the inorganic passivation film between two adjacent drain wirings.

10. The liquid crystal display device according to claim 5 , wherein
an end portion of the first alignment film along the border does not overlap with the border and the first outside edge of the second substrate.

11. The liquid crystal display device according to claim 5 , wherein
the first substrate has a display region and a frame portion outside of the display region in the first region,
the seal is provided on the frame region,
an end portion of the first alignment film along the border is between the border and the display region.

Assignees

• Japan Display Inc

Inventors

• Hatakeyama Eisuke

Classifications

• G02F1/13394

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F2201/50

  Protective arrangements · CPC title

• G02F1/13306

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title

• G02F1/13454 Primary

  Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence) · CPC title

• G02F1/133351

  Manufacturing of individual cells out of a plurality of cells, e.g. by dicing · CPC title