| 摘要 |
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.
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