Samsung patents quantum dot screen layer to improve light efficiency
Samsung has been granted a patent for a quantum dot display device that uses specific layers to help electrical charges move more easily. The design includes a buffer layer between the light-emitting quantum dots and an auxiliary layer to better extract and transport charges. This structure aims to make the quantum dots emit light more effectively within an electronic device.
In the filing’s own words
A quantum dot device and an electronic device. The quantum dot device includes a first electrode and a second electrode, a light emitting layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the second electrode and the light emitting layer and enhancing transport of first charge carriers from the second electrode to the light emitting layer, and a buffer layer disposed between the light emitting layer and the first charge auxiliary layer and enhancing extraction of second charge carriers from the light emitting layer.
What exactly they claim (claim 1)
1. A quantum dot device, comprising a first electrode and a second electrode, a light emitting layer between the first electrode and the second electrode, the light emitting layer comprising quantum dots, a first charge auxiliary layer between the second electrode and the light emitting layer, the first charge auxiliary layer configured to enhance transport of first charge carriers from the second electrode to the light emitting layer, and a buffer layer between the light emitting layer and the first charge auxiliary layer, wherein the buffer layer comprises a first charge auxiliary material configured to enhance transport of the first charge carriers and a second charge auxiliary material configured to enhance extraction of the second charge carriers, and a highest occupied molecular orbital energy level of the second charge auxiliary material is lower than a highest occupied molecular orbital energy level of the first charge auxiliary material.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Quantum dot device and electronic device
- Patent number
- US12742116B2
- Application number
- 17705617
- Filed
- Mar 28, 2022
- Granted
- Sep 22, 2026
- Inventors
- 8
- Claims
- 26
Classified under
C09K 11/565 Chemistry & metalsC09K 11/883 Chemistry & metalsB82Y 20/00 Operations & transportB82Y 40/00 Operations & transportH10K 50/11 Electricity & electronicsH10K 50/115 Electricity & electronicsMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.