Display device and electronic device comprising same

By employing a tailored quantum dot configuration with specific absorption and emission properties, the display device enhances display quality and efficiency while addressing reliability concerns.

WO2025071135A1 Publication Date: 2025-04-03SAMSUNG DISPLAY CO LTD
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Patent Information

Application Number
PCT/KR2024/014318
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-25
Filing Date
2024-09-23
Publication Date
2025-04-03

AI Technical Summary

Technical Problem

Existing display devices face challenges in achieving improved display quality while maintaining reliability, particularly in the integration of quantum dots for enhanced performance.

Method used

The display device incorporates a specific configuration of quantum dots, including a first quantum dot with a defined absorption peak and a second quantum dot without this peak, optimized in terms of core-shell structure, ligands, and weight ratios to minimize re-absorption and enhance light emission efficiency.

Benefits of technology

This configuration minimizes the re-absorption area in the UV-VIS absorption spectrum and PL spectrum, thereby reducing external light emission inefficiencies and achieving improved display quality.

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Abstract

This display device may comprise: light-emitting devices which are disposed on a substrate and which generate light of predetermined colors; and a color conversion layer which is disposed on the light-emitting devices, and which includes first quantum dots that include a first absorption peak in a UV-vis absorption spectrum and second quantum dots that differ from the first quantum dots and do not include the first absorption peak in the UV-vis absorption spectrum.
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