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Textured glass for light extraction enhancement of OLED lighting

A textured glass, textured technology, applied in chemical instruments and methods, coatings, surface etching compositions, etc., can solve problems such as complex processes, difficulty in scaling up, and reduced substrate strength

Active Publication Date: 2020-08-21
CORNING INC +7
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, each of these methods has its own disadvantages, including reliability of the coating, complex process for patterning, reduced strength of the substrate, additional material cost, and difficulty in scaling up

Method used

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  • Textured glass for light extraction enhancement of OLED lighting
  • Textured glass for light extraction enhancement of OLED lighting
  • Textured glass for light extraction enhancement of OLED lighting

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[0044] Laminate the pre-cleaned glass on one side with the acid-resistant protective film. It was then dipped into an acidic solution comprising 9 wt% HF and 9 wt% aqueous HCl for pre-cleaning. Afterwards, the glass was rinsed with deionized water for 10 s and quickly placed in etching cream for 2m-10m for surface treatment. The etching cream used to roughen the surface of glass consists of 10-20wt% NH 4 F and 10-20wt% NH 4 HF 2 , 0-10wt%KNO 3 , 5-20wt% BaSO as filler 4 , 1-10wt% soluble starch, 0-5wt% polyacrylamide, 1-25wt% CuCl 2 composition. To prepare the etch cream, first the solid powder chemicals were weighed and mixed in a plastic container, and then 10-40 wt% deionized water was added to the container with hand stirring. Afterwards, a 5-20 wt% solution of concentrated HF acid (40%) was added slowly with manual stirring using a plastic stick. When all the HF acid is added, continue to stir by hand until a fluid slurry forms. This etch slurry was then further ...

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Abstract

A textured glass substrate along with articles comprising a textured glass substrate and methods of making are provided. The substrates retain the mechanical and optical properties of the untextured glass, while the process provides a reliable and low cost, easy scale up method. The resulting glass substrates are of particular use for light extraction in organic light emitting diode structures.

Description

[0001] This application claims priority under U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 428,088, filed November 30, 2016, the contents of which are the basis of the present case and are incorporated herein by reference in their entirety. technical field [0002] The following description relates to textured glass substrates for improved light extraction in organic light emitting diodes and methods for processing glass substrates with textured surfaces. Background technique [0003] High-efficiency organic light-emitting diodes (OLEDs) have been the subject of intensive research in recent years due to their potential applications in displays and lighting. In theory, an internal quantum efficiency of 100% for OLEDs can be achieved by using phosphorescent emitters that achieve both singlet and triplet excited emission. However, in reality, only about 20% of the internal emission can be coupled out, and the remaining about 80% of the internal emission is mainly d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C15/00C09K13/08H01L51/52
CPCC03C15/00C03C2204/08C03C2218/34H10K50/19H10K50/858Y02E10/549
Inventor 曹昕宇陈海星陈玲戴程隆吴光杰朱建强
Owner CORNING INC