METHOD FOR PREPARING HIGH HARDNESS MATERIAL HAVING LOGO, TEXT, OR PATTERN

WIPO Patent Application WO/2015/026169

A1

The present invention relates to a method for preparing a high hardness material having a logo, text, or a pattern. The method comprises: engraving a pattern, text, or logo deeply enough into a polished surface of a high hardness material such as zirconia ceramics, single-crystal sapphire, or transparent poly-crystal ceramics; filling the intaglio section with glass frit which is a vitreous material having a lower coefficient of thermal expansion than the high hardness material; and polishing the high hardness material again after heat treatment. Therefore, a vitreous material with a high gloss can be strongly bonded to a high hardness material without being cracked and is less likely to be scratched due to the surface thereof being lower in height than the surrounding high-hardness material, which makes it possible to form high-resolution text, logos, or patterns with various vivid colors having an excellent sense of beauty, thereby widely using the high hardness material as an external material of portable devices or ornaments.

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LEE JAE HYUNG (KR)
WOO MYUNG HUN (KR)
LEE MOON HEE (KR)

PCT/KR2014/007753

February 26, 2015

August 21, 2014

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UNIV YEUNGNAM RES COOPERATION FOUNDATION (KR)

C04B41/91; B23K26/18; B24B1/00; C04B41/45

KR20040093434A	2004-11-05
KR20130029114A	2013-03-21
JPH08268779A	1996-10-15
JP2002201070A	2002-07-16
KR20110130148A	2011-12-05

TAEBAEK INTELLECTUAL PROPERTY LAW FIRM (KR)
특허법인 태백 (KR)

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