IP Library Granted Patent US 7,704,795
Granted Patent B2
US 7,704,795 · App. 11/892,503 · Granted Apr 27, 2010

Display device and manufacturing method thereof

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Quick Facts
Patent No.
US 7,704,795
App. No.
11/892,503
Granted
Apr 27, 2010
Kind
B2
Abstract

The present invention provides a manufacturing method of a display device which can efficiently separate individual thin-thickness display devices from a large-sized mother substrate. Scribe marks for separating a plurality of display devices are preliminarily formed on back surfaces of a TFT mother substrate and a sealing mother substrate. By etching front surfaces of these mother substrates, etching portions reach the scribe marks so that a plurality of display devices each of which is constituted of a TFT substrate and a sealing substrate can be separated from each other.

Claims (5)

1. A method of manufacturing a display device, the method comprising:

providing a first substrate and a second substrate;

forming scribe marks on a first surface of at least one of the first and second substrates;

adhering the first and second substrates to each other in a state that the scribe marks are sandwiched between the first and second substrates; and

etching an outer surface of the at least one of the first and second substrates that is opposite the first surface to thin the at least one of the first and second substrates and separate the at least one of the first and second substrate at the scribe marks.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 30, 2018
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.; JAPAN DISPLAY INC.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 046988/0801 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS Recorded Oct 14, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027063/0019 →
MERGER Recorded Oct 14, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027063/0139 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 11, 2007
From: AZUMA, HITOSHI; TANAKA, MASAHIRO; MATSUURA, TOSHIYUKI
To: HITACHI DISPLAYS, LTD.
Reel/Frame 019978/0063 →