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고휘도 Line LED조명시스템(HLLLI)설계 및 개발
류장렬(Jang-Ryul Ryu),이부형(Boo-Hyung Lee) 한국정보기술학회 2008 한국정보기술학회논문지 Vol.6 No.5
In this paper, HLLLI(High Luninous Line LED Illuminator) system which use the high luminous LEDs and is applicable to Line AIO(Auto Optical Inspector) is manufactured for installation on a large size LCD inspection process line. The performance tartget of the HLLLI system has been set at light line length over 600mm, light width within 5mm, luminous intensity over 150,000 Lux. The HLLLI system was tested by LightTool and a Luminous intensity measurement tool and target of the system performance was achieved consequently.
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Back Light Unit 내부의 LED Back light의 광균일도를 향상시키기 위한 LED 배열 방식의 비교 분석
류장렬(Jang-Ryul Ryu),이부형(Boo-Hyung Lee),이구열(Gu-yeol Lee) 한국정보기술학회 2009 한국정보기술학회논문지 Vol.7 No.1
This paper presents various LED array methods to improve the luminous Intensity uniformity of LED Back Light in BLU for LCD Probe Station, and especially LED array methods applicable to the LED BLU over 22 inch requiring a great quantity of LEDs(16,000-20,000) are represented. The presented LED array methods consist of two types of equal-distance array architectures (Type11/Type12) and two types of non equal-distance array architectures (Type21/Type22). Basically, Type11 and Type12 have LEDs which are arranged with equal distances but the narrowest gaps. However, Type 21 and Type 22 have LEDs which are arranged with non-equal distance. In Type 21 and Type 22, gaps between LEDs in central part and gaps between LEDs in non-central part are different. Especially, in Type22, gaps between LEDs in non-central part change many times. LED array methods presented in this paper were all simulated by the LightTools. As a simulation result, All four types showed a good luminous Intensity uniformity over 85% and especially Type21 and Type 22 showed a good luminous Intensity uniformity over 88%.
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대면적 LCD 백라이트용 LED 배열 구조의 시제품 제작 및 성능 분석
이부형(Boo-Hyung Lee),류장렬(Jang-Ryul Ryu) 한국정보기술학회 2009 Proceedings of KIIT Conference Vol.2009 No.-
본 논문에서는 적은 열발생, 양호한 광량 및 광균일도를 얻을 수 있는 대면적 LCD BLU 용 LED 배열구조로 거리가 조절된 등간격 배열의 구조(LED Array Type 12)를 선택하여 시제품을 제작한 후 시제품의 광균일도, 조도, 온도를 측정하였다. 측정결과 목표대비 101%의 광균일도, 236%의 조도, 150%의 온도를 얻을 수 있어 양호한 결과를 입증하였다. In This paper, the LED Array prototype for using in Large area LCD BLU is designed and its performances are measured. LED array prototype have LEDs which are arranged with equal distances but the narrowest gaps.(LED Array type 12). It is showed that The LED array prototype which is designed in this paper have the luminous intensity uniformity of 101% , luminous intensity of 236% and temperature of 150% over target values.
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의료기기의 광균일도 향상을 위한 LED 배열방식의 비교분석
손선국(Sun-Guk Son),황대위(Dae-Wi Hwang),송하연(Ha-Yeon Song),홍재화(Jae-Hwa Hong),김승일(seung-il kim),류장렬(Jang-Ryul Ryu) 한국정보기술학회 2011 Proceedings of KIIT Conference Vol.2011 No.5
본 논문은 LED 의료기기에서 LED(IR, RED)의 광균일도를 향상시키기 위한 효율적인 LED배열 구조에 관한 것으로, 특히, LED(150개 이상)가 요구되는 11″인치이상의 LED의료기기에 적용할 수 있는 다양한 LED 배열방식을 제안한다. 제안하는 배열 방식은 3종류의 등간격 평면형배열(Type1-1~2/Type2-1~2/Type3-1~2)과 3종류의 등간격 원통형배열(Type4-1~2/Type5-1~2/Type6-1~2)로, Type*-1~2는 LED와 Receiver와의 거리를 다르게 한 배열된 구조를 가지며, Type1-1~2/Type4-1~2는 Stripe형, Type2-1~2/Type5-1~2는 Mosaic형, Type3-1~2/Type6-1~2는 Delta형의 등간격의 구조를 갖는다. 제안된 3종류 배열구조에 대해 LightTools를 사용하여 광균일도를 실험하였다. 실험결과, 3종류의 Type 중 11″인치이상에서의 광균일도는 모든 Type에서 Receiver를 10㎜로 떨어뜨려 측정한 경우 좋았고, 특히 Mosaic형 방식에서 가장 양호한 결과를 나타내었으나 조도값은 Stripe형 방식에서 가장 높았다. This paper presents various LED array methods to improve the luminous intensity uniformity of LED(IR, RED) for LED medical equipment, and especially LED array methods applicable to the LED medical equipment over 11 inches requiring a great quantity of LEDs(over 150) are represented. The presented LED array methods consist of three types of equal-distance Planar array architectures (Type1-1~2/Type2-1~2/Type3-1~2) and three types of equal-distance Cylindrical array architectures (Type4-1~2/Type5-1~2/Type6-1~2). Basically, Type*-1~2 employs a structure that are arranged in different distance between LED and the Receiver. Type1-1~2/Type4-1~2 are Stripe type, Type2-1~2/Type5-1~2 are Mosaic type, Type3-1~2/Type6-1~2 have the structure of the Delta type of equal-distance array. LED array methods presented in this paper was all simulated using the LightTools. As a simulation result, all three types showed a good luminous intensity uniformity when measured at 10㎜ away and especially the Mosaic type showed a good luminous intensity uniformity whereas roughness values were the highest in the Stripe-type approach.
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