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International application No. Applicant's or agent's file reference
PCT/US2019/066940 620053-403WO-469187
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
17 December 2019 02 January 2019
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing filed or furnished:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.
6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     1    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     H01L 27/15 (2006.01)i; H01L 25/16 (2006.01)i; H01L 33/00 (2010.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Korean utility models and applications for utility models
Japanese utility models and applications for utility models
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
eKOMPASS(KIPO internal) & Keywords: display, wafer, micro-LED, carrier substrate


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2017-0294479 A1 (SAMSUNG ELECTRONICS CO., LTD.) 12 October 2017 paragraphs [0041]-[0129], [0201], [0242] and figures 1-22, 50
US 2018-0269191 A1 (GLOBALFOUNDRIES INC.) 20 September 2018 paragraphs [0015], [0027]-[0028] and figure 4
US 2015-0279902 A1 (OSRAM OPTO SEMICONDUCTORS GMBH) 01 October 2015 paragraphs [0056]-[0103] and figures 1-5
US 2014-0145204 A1 (HC SEMITEK CORPORATION) 29 May 2014 paragraphs [0152]-[0153] and figures 22-23
US 2014-0103391 A1 (MITSUBISHI CHEMICAL CORPORATION) 17 April 2014 paragraph [0211] and figure 2
US 2018-0331085 A1 (LUMENS CO., LTD.) 15 November 2018 paragraphs [0030]-[0041] and figures 1-7
US 2017-0179192 A1 (HONG KONG BEIDA JADE BIRD DISPLAY LIMITED) 22 June 2017 paragraphs [0023]-[0029], claims 1, 29 and figure 1A
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
US 2017-0294479 A1
12 October 2017
CN 107452763 A
DE 102017105746 A1
KR 10-2017-0116296 A
US 10388693 B2
US 2019-0103438 A1
US 2019-0371856 A1
US 9997561 B2
08 December 2017
12 October 2017
19 October 2017
20 August 2019
04 April 2019
05 December 2019
12 June 2018
US 2018-0269191 A1
20 September 2018
CN 108630717 A
TW 201839952 A
09 October 2018
01 November 2018
US 2015-0279902 A1
01 October 2015
CN 104704634 A
CN 104704634 B
DE 102012109460 A1
JP 6262745 B2
JP 2016-502123 A
JP 2018-097367 A
US 2018-0090540 A1
US 9859330 B2
WO 2014-053445 A1
10 June 2015
11 September 2018
10 April 2014
17 January 2018
21 January 2016
21 June 2018
29 March 2018
02 January 2018
10 April 2014
US 2014-0145204 A1
29 May 2014
CN 102255013 A
CN 102255013 B
US 9087933 B2
WO 2013-017040 A1
23 November 2011
04 September 2013
21 July 2015
07 February 2013
US 2014-0103391 A1
17 April 2014
JP 5862354 B2
JP 2012-231122 A
KR 10-2014-0019383 A
US 9257595 B2
WO 2012-141169 A1
16 February 2016
22 November 2012
14 February 2014
09 February 2016
18 October 2012
US 2018-0331085 A1
15 November 2018
CN 109479354 A
EP 3487266 A1
JP 6131374 B1
JP 6445075 B2
JP 2018-014475 A
JP 2018-014481 A
JP 2019-068082 A
KR 10-2018-0009116 A
TW 201804608 A
US 10062675 B2
US 10607973 B2
US 2018-0019233 A1
US 2018-0331086 A1
WO 2018-016728 A1
15 March 2019
22 May 2019
21 April 2017
26 December 2018
25 January 2018
25 January 2018
25 April 2019
26 January 2018
01 February 2018
28 August 2018
31 March 2020
18 January 2018
15 November 2018
25 January 2018
US 2017-0179192 A1
22 June 2017
CN 109314083 A
EP 3394884 A1
TW 201732770 A
US 10079264 B2
WO 2017-112674 A1
05 February 2019
31 October 2018
16 September 2017
18 September 2018
29 June 2017
Name and mailing address of the ISA/:
Korean Intellectual Property Office
189 Cheongsa-ro, Seo-gu, Daejeon Metropolitan City, 302-701
Republic of Korea
Facsimile No. +82-42-481-8578
Date of the actual completion of the international search:
29 April 2020
Date of mailing of the international search report:
29 April 2020
Authorized officer:
JANG, Gijeong
Telephone No. +82-42-481-8364
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