blank Quick help
blank Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability

2022.02.11

More...
blank News flashes

News Flashes

New version of the European Patent Register – SPC proceedings information in the Unitary Patent Register.

2024-07-24

More...
blank Related links

Extract from the Register of European Patents

EP About this file: EP3920251

EP3920251 - QUANTUM DOT DEVICE AND QUANTUM DOT DISPLAY DEVICE [Right-click to bookmark this link]
StatusExamination is in progress
Status updated on  26.01.2024
Database last updated on 02.11.2024
FormerRequest for examination was made
Status updated on  18.03.2022
FormerThe application has been published
Status updated on  05.11.2021
Most recent event   Tooltip21.05.2024New entry: Reply to examination report 
Applicant(s)For all designated states
Samsung Electronics Co., Ltd.
129, Samsung-ro
Yeongtong-gu
Suwon-si, Gyeonggi-do 16677 / KR
[N/P]
Former [2021/49]For all designated states
Samsung Electronics Co., Ltd.
129, Samsung-ro
Yeongtong-gu
Gyeonggi-do
Suwon-si 16677 / KR
Inventor(s)01 / CHUNG, Dae Young
Gyeonggi-do / KR
02 / SEO, Hongkyu
Gyeonggi-do / KR
03 / LEE, Yeonkyung
Gyeonggi-do / KR
04 / JANG, Eun Joo
Gyeonggi-do / KR
 [2021/49]
Representative(s)Elkington and Fife LLP
Prospect House
8 Pembroke Road
Sevenoaks, Kent TN13 1XR / GB
[2021/49]
Application number, filing date21172213.705.05.2021
[2021/49]
Priority number, dateKR2020006661602.06.2020         Original published format: KR 20200066616
[2021/49]
Filing languageEN
Procedural languageEN
PublicationType: A2 Application without search report 
No.:EP3920251
Date:08.12.2021
Language:EN
[2021/49]
Type: A3 Search report 
No.:EP3920251
Date:16.03.2022
Language:EN
[2022/11]
Search report(s)(Supplementary) European search report - dispatched on:EP14.02.2022
ClassificationIPC:H01L51/50, H01L51/52, H01L27/32
[2021/49]
CPC:
H10K59/35 (EP); H01L33/04 (KR); H10K50/115 (EP,CN);
H01L33/50 (KR); H10K50/15 (EP,CN); H10K50/17 (EP);
H10K50/852 (EP); H10K59/876 (EP,CN,KR); H10K2102/3026 (EP);
H10K2102/351 (EP); H10K50/16 (EP); H10K50/171 (EP);
H10K50/818 (EP); H10K50/828 (EP); H10K59/80518 (EP,CN,KR);
H10K59/80524 (EP,CN,KR) (-)
Designated contracting statesAL,   AT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HR,   HU,   IE,   IS,   IT,   LI,   LT,   LU,   LV,   MC,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2022/16]
Former [2021/49]AL,  AT,  BE,  BG,  CH,  CY,  CZ,  DE,  DK,  EE,  ES,  FI,  FR,  GB,  GR,  HR,  HU,  IE,  IS,  IT,  LI,  LT,  LU,  LV,  MC,  MK,  MT,  NL,  NO,  PL,  PT,  RO,  RS,  SE,  SI,  SK,  SM,  TR 
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:QUANTENPUNKTVORRICHTUNG UND QUANTENPUNKTANZEIGEVORRICHTUNG[2021/49]
English:QUANTUM DOT DEVICE AND QUANTUM DOT DISPLAY DEVICE[2021/49]
French:DISPOSITIF À POINTS QUANTIQUES ET DISPOSITIF D'AFFICHAGE À POINTS QUANTIQUES[2021/49]
Examination procedure16.03.2022Amendment by applicant (claims and/or description)
16.03.2022Examination requested  [2022/16]
16.03.2022Date on which the examining division has become responsible
29.01.2024Despatch of a communication from the examining division (Time limit: M04)
20.05.2024Reply to a communication from the examining division
Fees paidRenewal fee
14.03.2023Renewal fee patent year 03
13.03.2024Renewal fee patent year 04
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court
See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:Search[A]CN110400890  (CHANGCHUN INST OPTICS FINE MECH & PHYSICS CAS) [A] 1-14* page 5 - page 11; figures 1,2,7 *;
 [Y]EP3656833  (SAMSUNG DISPLAY CO LTD [KR]) [Y] 13 * paragraphs [0200] , [0203]; figure 3 *;
    [XAYI] - LIU SHIHAO ET AL, "Top-emitting quantum dots light-emitting devices employing microcontact printing with electricfield-independent emission", SCIENTIFIC REPORTS, (20160302), vol. 6, no. 1, doi:10.1038/srep22530, XP055821260 [X] 1,7,9,11,12 * page 1 - page 6; figures 1,3,5; table 1 * [A] 4-6 [Y] 2,3,8,10,13 [I] 14

DOI:   http://dx.doi.org/10.1038/srep22530
 [Y]  - LIU GUOHONG ET AL, "Very Bright and Efficient Microcavity Top-Emitting Quantum Dot Light-Emitting Diodes with Ag Electrodes", APPLIED MATERIALS & INTERFACES, US, (20160624), vol. 8, no. 26, doi:10.1021/acsami.6b03367, ISSN 1944-8244, pages 16768 - 16775, XP055846389 [Y] 2,8 * figure 1; table 1 *

DOI:   http://dx.doi.org/10.1021/acsami.6b03367
 [Y]  - LI DONG ET AL, "Enhanced Efficiency of InP-Based Red Quantum Dot Light-Emitting Diodes", APPLIED MATERIALS & INTERFACES, US, (20190823), vol. 11, no. 37, doi:10.1021/acsami.9b07437, ISSN 1944-8244, pages 34067 - 34075, XP055832908 [Y] 3,10 * page 34068 - page 34069; figures 1b, 2, 4 *

DOI:   http://dx.doi.org/10.1021/acsami.9b07437
 [A]  - WHALEN M. S. ET AL, "Index of refraction of n -type InP at 0.633- and 1.15-[mu]m wavelengths as a function of carrier concentration", JOURNAL OF APPLIED PHYSICS, US, (19820601), vol. 53, no. 6, doi:10.1063/1.331213, ISSN 0021-8979, pages 4340 - 4343, XP055847125 [A] 3 * page 4342 - page 4343; figure 5 *

DOI:   http://dx.doi.org/10.1063/1.331213
 [A]  - ZHANG DONG-YAN ET AL, "First-principles simulation and experimental evidence for improvement of transmittance in ZnO films", PROGRESS IN NATURAL SCIENCE, (20120316), vol. 21, no. 1, doi:10.1016/S1002-0071(12)60023-9, ISSN 1002-0071, pages 40 - 45, XP028908243 [A] 3 * page 43 - page 44; figure 5 *

DOI:   http://dx.doi.org/10.1016/S1002-0071(12)60023-9
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.