US 11,114,041 B2 · Blue light compensation film and OLED display

Abstract

The present invention provides a blue light compensation film and an OLED display. The blue light compensation film of the present invention effectively absorbs blue light with wavelength longer than blue wavelength and excite blue light by using a blue light upconversion luminescent material, and effectively improves color shift white OLED device caused by short lifespan of blue electroluminescent material to achieve blue light compensation of the white OLED device and solve the of yellowing in traditional OLED display with age. The OLED display of the present invention comprises the blue light compensation film to avoid color shift problem and provides good display quality.

Claims8

Dependent claims

A blue light compensation film, which comprises, from a bottom up in a stack, an adhesive layer, a first transparent film, and a second transparent film;

the blue light compensation film satisfying following condition:
the first transparent film being doped with a blue light upconversion luminescent material;
the blue light upconversion luminescent material comprising at least one of an upconversion organic luminescent material based on a triplet-triplet annihilation and a host material doped with a rare earth ion;
the blue light upconversion luminescent material being capable of absorbing light with wavelength greater than a blue light wavelength and converting to blue light.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/724,379Filed 23 Dec 2019 · division

Priority

CN 201610890915.312 Oct 2016

Published

US 2020/0126490 A123 Apr 2020

Granted

7 Sep 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G09G 3/34
For presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged…:…
G02B 5/20
Optical elements other than lenses: filters
H10K 59/38
Devices specially adapted for multicolour light emission: comprising colour filters or colour changing media [CCM]
G09G
Arrangements or circuits for control of indicating devices using static means to

Family

Application15/329,239Parent of this division · filed 25 Jan 2017

US 2020/0126490 A1Pre-grant publication · published 23 Apr 2020

US 10,565,938 B2Parent of this division

US 2018/0336838 A1Published application

US 11,114,041 B2This patent

From the US filing history. Foreign family members aren’t listed.

Blue light compensation film and OLED display

Life of this patent

Blue light compensation film and OLED display

Life of this patent

Abstract

Claims8