Display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10996526-B2
Application number	US-202016893620-A
Country	US
Kind code	B2
Filing date	Jun 5, 2020
Priority date	Oct 1, 2012
Publication date	May 4, 2021
Grant date	May 4, 2021

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 method for manufacturing a display device, comprising steps of:
a first step for preparing a first substrate having plural display panel regions, the plural display panel regions arranged in a matrix in a first direction and in a second direction intersecting the first direction, and each of the display panel regions having a display region,
a second step for forming a first alignment film covering the plural display regions in common on the first substrate,
a third step for applying plural seals, each of the seals surrounds each of the display regions, and
a fourth step for cutting the first substrate and the first alignment film formed on the first substrate into each of the display panel regions,
wherein the first step further includes:
forming plural first metal wirings on a glass substrate;
forming a first inorganic passivation film, which covers the plural first metal wirings;
forming plural second metal wirings on the first inorganic passivation film;
forming a second inorganic passivation film, which covers the plural second metal wirings and the first inorganic passivation film;
forming an organic passivation film which covers the plural second metal wirings and the second inorganic passivation film; and
forming grooves in the organic passivation film,

wherein the first metal wirings and the second metal wirings overlap one of the seals,
wherein the first metal wirings and the second metal wirings do not overlap the grooves,
wherein the second step further includes:
making the first alignment film overlap the grooves, and

wherein the third step further includes:
making at least one of the seals overlap the grooves.

2. The method for manufacturing a display device according to claim 1 ,
wherein each of the display panel regions has a driver circuit region, which is located outside of the display region, and
wherein in the second step, the alignment film is not formed in the driver circuit region.

3. The method for manufacturing the display device according to claim 2 , further comprising a fifth step for preparing a second substrate, which has plural spacers,
wherein the third step further includes attaching the second substrate to the first substrate by the plural seals, and
the fourth step further includes cutting at least one of the spacers between adjacent display panel regions in the first direction.

4. The method for manufacturing a display device according to claim 3 , wherein the spacer is in contact with the first alignment film.

Assignees

• Japan Display Inc

Inventors

• Hatakeyama Eisuke

Classifications

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/13396

  Spacers having different sizes · CPC title

• G02F1/133351

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

• G02F1/133792

  by etching · 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