[자동차용 디스플레이 세미나]자동차용 디스플레이, 투명 디스플레이 기술이 시급하다

지난 13일 여의도 전경련회관에서 한국미래기술교육연구원이 주최한 ‘자동차용 디스플레이 개발기술과 상용화 방안’ 세미나가 열렸다.
자동차부품연구원의 박선홍 박사는 “자동차용 디스플레이 시장이 커지면서 디스플레이의 시장 영역이 점점 확장되고 있다.”고 말하며, “주로 네비게이션 역할을 하는 중앙정보 디스플레이(CID)와 주행거리나 속도를 표시해줄 수 있는 Head up display(HUD)의 시장이 2008년부터 꾸준히 성장하고 있으며 앞으로도 크게 성장할 것으로 기대되고 있다.”라고 발표했다. 특히 CID는 7인치 이상의 디스플레이의 시장점유율이 높아지고 있으며 대형화가 진행되고 있다고 덧붙였다. 또한 운전 중 전방 주시 태만으로 인한 교통사고의 비율이 늘고 있어 정보를 운전하면서 확인할 수 있도록 전방 유리에 표시할 수 있는 HUD의 필요성에 대한 언급도 하였다. 하지만 아직 밝기나 반사에 의한 가독성 문제와 다른 표시 장치와의 조화 등의 기술적인 이슈가 해결되어야 한다고 말했다.

자동차부품연구원 박선홍 박사

한국전자통신연구원의 황치선 실장은 투명 디스플레이를 구현할 수 있는 디스플레이 기술에 대한 비교와 함께 자동차에 적용하기 위해 해결해야 할 기술 이슈에 대해 발표하였다. 황치선 실장은 “투명 디스플레이가 구현 가능한 디스플레이 기술로는 LCD, OLED, TFEL(Thin Film EL), HUD(Projection) 등이 있지만 해상도와 투명도를 고려했을 때 가장 적합한 디스플레이는 AMOLED이다.  LCD는 기술이 상용화 단계에 있긴 하지만 투명도가 높지 않아 운전자의 시야에 불편함을 줄 수 있다는 단점이 있다.” 라고 설명했다. 또한 “Poly Si TFT 기술은 특성이 좋지만 투명도가 한정되어있다는 단점이 있지만 Oxide TFT 기술은 투명도도 높고 특성도 점차 개선되고 있어 oxide TFT에 대한 개발이 보다 적극적으로 필요하다.”라고 발표했다. 자동차용 디스플레이로 적용되기 위해서는 운전자 시야에 적합한 위치와 자동차 부품이 되기 위한 온도, 원가, 밝기 등의 조건 등을 충족시켜야 하므로 일반적인 display보다 해결해야 할 기술 이슈들이 많다고 언급했다.

한국전자통신연구원 황치선 실장

Source:한국전자통신연구원 황치선 실장 발표자료

이처럼 자동차용 디스플레이에서 투명 디스플레이가 주목을 받고 있으며 자동차에 적용하기 위한 기술에도 관심이 커지고 있다. 자동차용 디스플레이 시장을 주도하기 위해서는 display 자체적인 특성뿐만 아니라 자동차 부품들의 특성을 이해함과 동시에 운전자에게 최적화 시키기 위한 다양한 이슈들을 파악하고 이를 해결하기 위한 노력이 필요할 것으로 예상된다.

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