Patent application EP19180680A (EP), filed 2019-06-17
Publication number: EP3753994A1
Title: LUMINESCENT COMPONENT
Abstract: [0001]    Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element 1 including first luminescent crystals 11 from the class of perovskite crystals, embedded a first polymer P1 and a second element 2 comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals 12 embedded in a second polymer P2. Polymers P1 and P2 differ and are further specified in the claims. Also described are methods for manufacturing such components and devices comprising such components.
IPC codes: C09K  11/    02            A I
C09K  11/    66            A I
H10K  99/    00            A I
Claims: number: 1
text: Use of a polymer (P2) in a luminescent component (4) whereby
number: 2
text: A luminescent component (4), comprising a first element (1) and a second element (2), wherein:
number: 3
text: The luminescent component according to claim 2, wherein P1 and / or P2 complies with one or more of the following parameters:
number: 4
text: The luminescent component according to claim 2 or 3, wherein the first polymer (P1) is selected from the group of acrylate polymers and wherein the second polymer (P2) is preferably selected from the group of acrylate polymers.
number: 5
text: The luminescent component according to any of claims 2 - 4, wherein the first polymer (P1) comprises repeating units of formulae (III) and (V) and / or the second polymer (P2) comprises repeating units of formula (VI) and optionally of formula (III):
number: 6
text: The luminescent component according to any of claims 2 - 5, wherein the first luminescent crystals (11) are selected from compounds of formula (I):
number: 7
text: The luminescent component according to any of claims 2 - 6, wherein the second luminescent crystals (12) are selected from one or more of core-shell QDs and micron-sized phosphors.
number: 8
text: The luminescent component according to any of claims 2 - 7, further comprising third luminescent crystals (13) selected from one or more of perovskite crystals, core-shell QDs and micron-sized phosphors.
number: 9
text: The luminescent component according to any of claims 2 - 8 in the form of a film (4), particularly a QD backlight film or a down conversion film, said film comprising the following layered structure:
number: 10
text: The luminescent component according to claim 9 wherein said protecting layer is selected from
number: 11
text: The luminescent component according to any of claims 2 - 8, wherein
number: 12
text: The luminescent component according to any of claims 2 - 8, wherein
number: 13
text: A light emitting device, comprising
number: 14
text: The light emitting device according to claim 13 selected from the group consisting of
number: 15
text: Use of a luminescent component of any of the preceding claims 2 to 11, for emitting white light in response to the luminescent component (4) being radiated by blue light, in particular as a backlight in a liquid crystal display.
number: 16
text: Method for manufacturing a luminescent component according to any of claims 2 to 12, comprising the steps of:
Office action: search_report, dated 2020-12-23
Prior art cited: ref_id: WO2011053635A1
ref_type: patent
severity: background
ref_id: WO2017106979A1
ref_type: patent
severity: background
ref_id: WO2018028869A1
ref_type: patent
severity: background
ref_id: US2018298278A1
ref_type: patent
severity: background
ref_id: - CHEMICAL ABSTRACTS, Columbus, Ohio, US; abstract no. 40220-08-4
ref_type: npl
severity: background
ref_id: US2018273841A1
ref_type: patent
severity: background
ref_id: US2019153313A1
ref_type: patent
severity: background
ref_id: US2018010039A1
ref_type: patent
severity: background
ref_id: US2018010039
ref_type: patent
severity: background
ref_id: US2018273841
ref_type: patent
severity: background
ref_id: US2019153313
ref_type: patent
severity: background
Final disposition: pending (2020-12-23)