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CEA-Leti relata co-integração de GaN MicroLED e fotodetectores orgânicos para aplicações de exibição multifuncional
- Apollux Tecnologia Optoeletrônica LTD
Fonte de notícias：CEA-Leti
2025-5-21
Visando a próxima geração de tecnologia de exibição, a CEA-Leti apresentou hoje sua co-integração heterogênea de tecnologia GaN microLED e fotodetectores orgânicos (OPDs), um grande passo em direção a exibições multifuncionais que combinam tanto as capacidades de exibição quanto de detecção.
Os resultados foram apresentados em um artigo na conferência Display Week intitulado“Co-integração de fotodetector orgânico com MicroLED dedicado à aplicação de exibição multifuncional. "
À medida que a demanda por telas inovadoras e interativas continua a crescer, a tecnologia microLED emergiu como um concorrente promissor para aplicações futuras de tela devido ao seu brilho excepcionalmente alto, mantendo uma pegada mínima, deixando espaço para integrar funções adicionais. Essas propriedades expandem os limites dos ecrãs tradicionais, tornando o microLED um candidato ideal para integrar funções de exibição e sensores. No entanto, alcançar a co-integração perfeita entre microLED e fotodetectores continuou sendo um grande desafio técnico. Poucos estudos abordaram esta questão até a nova pesquisa da CEA-Leti.
“Demonstrar com sucesso a co-integração de microLEDs com fotodetectores abre o caminho para telas multifuncionais que combinam imagem, reconhecimento de gestos e até mesmo digitalização biométrica", disse Michaël Pelissier, principal autor do artigo.“O alto brilho do MicroLED nos permite liberar mais espaço no painel de exibição para incorporar fotodetectores, o que não só melhora a experiência de exibição, mas também abre novas possibilidades para telas inteligentes e interativas. "
Um dos principais obstáculos na integração de microLEDs com fotodetectores é o fenômeno do acoplamento crosstalk. Crosstalk ocorre quando a luz emitida pelos microLEDs atinge o fotodetector diretamente antes de refletir fora da cena observada, levando a interferência e diminuição do desempenho do sensor. Explorando este desafio, o artigo apresenta insights-chave sobre como a distância entre a fonte de iluminação e o fotodetector afeta o crosstalk, fornecendo uma compreensão mais profunda deste gargalo.
Aplicações para dispositivos de saúde, segurança e consumidor
A co-integração de microLEDs com fotodetectores orgânicos permite possibilidades altamente promissoras para novas aplicações, incluindo:
Detecção de impressões digitais em toda a área de exibição: Permite acesso seguro detectando impressões digitais em toda a tela e até mesmo extrai imagens detalhadas de veias, em vez de áreas específicas, melhorando significativamente as medidas de segurança para dispositivos de consumo.
Detecção de infravermelhos para uma nova interface: usa a detecção de infravermelhos para realizar reconhecimento de gestos em proximidade próxima à tela para melhorar ainda mais as capacidades interativas.
Bio-Monitoramento: Permite a extração de parâmetros fisiológicos como, frequência cardíaca, níveis de oxigênio no sangue, temperatura corporal, apoiando novos avanços em aplicações de saúde e bem-estar.
À medida que dispositivos de consumo, como smartphones e laptops, tornam-se mais integrantes da vida diária, a demanda por telas multifuncionais continua a aumentar. Esta co-integração permite que exibições que não apenas exibem conteúdo, mas também sintam o ambiente—permitindo interações inteligentes, biometria e monitoramento fisiológico em tempo real, tudo dentro de um único dispositivo compacto.
Próximos passos
Após este avanço na co-integração, a próxima fase do trabalho da CEA-Leti se concentrará em explorar todo o potencial desta tecnologia para aplicações específicas, como o rastreamento de parâmetros fisiológicos. Os pesquisadores também investigarão várias tecnologias de fotodetector que podem ser co-integradas com microLEDs para otimizar o desempenho, reduzir o crosstalk e melhorar ainda mais a multifuncionalidade.
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