• 한국정보디스플레이학회:학술대회논문집
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• 2007.08a
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• pp.940-943
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• 2007

The objective of the research presented in this paper is to design a highly efficient LCD-TV backlight unit (BLU) which minimizes lamp count without light leakage from the BLU. A new optical plate helps to successfully distribute spatial luminance in a 46inch LCD-BLU consisting of only 20 CCFLs.

• Information Display
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• v.2 no.1
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• pp.25-29
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• 2001

TFT-LCD는 그 상업화의 역사가 이제 겨우 10여년으로 일천함에도 불구하고 괄목할만한 시장성장과 더불어 우리 생활에 많은 변화를 야기했고, 그 변화의 정도는 앞으로 더욱 더 심화 될 것으로 예상된다 . 요즘 유행처럼 이야기되어지는 정보화 기술 (IT: Information Technology), 디지털 기술이란 의미도 궁극적으로 따져보면 영상정보의 효율적 전달을 의미하며, 그 정보의 실체를 사람의 눈으로 보는 것은 결국 디스플레이 인 것이다. 여러 가지의 디스플레이 가운데 특히 TFT-LCD는 노트북 컴퓨터를 시발점으로 모니터 등 그 웅용분야를 점차 넓혀 가고 있으며, 디스플레이 산업의 시장을 주도하고 있다. 현재 디스플레이의 가장 큰 부분을 차지하고 있는 TV 시장에 대한 접근도 활발히 하고 있어 그 동안 CRT 를 사용한 TV 시장에도 향후 각 디스플레 이간의 주도권 및 영역 다툼이 더욱 심화 되리라고 예상된다. 본고(本稿)에서는 TFT-LCD를 중심으로 TV 에 응용 되기 위한 기술적 요구 사항과 현재 LCD maker들의 개발 현황 및 향후 전망 등 에 대해 정리해 보고자 한다.

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.250-253
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• 2008

A touch screen panel embedded 12.1-inch TFT LCD employing a standard a-Si:H TFT process has been successfully developed. Compared with conventional external touch screen panels, the new internal TSP exhibits a clearer image and improved touch feeling. Our new internal proposed TSP can be fabricated with low cost.

• 한국정보디스플레이학회:학술대회논문집
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• 2004.08a
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• pp.1023-1023
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• 2004

• 한국정보디스플레이학회:학술대회논문집
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• 2006.08a
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• pp.298-302
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• 2006

Driver electronics for emerging display technologies are presented for OLED's, microdisplays, electrophoretic displays & bi-stable LCD's. Key factors for commercialization of these technologies are derived from the experience of the LCD's, including driver IC designs, wafer and assembly processes & applications.

• 한국정보디스플레이학회:학술대회논문집
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• 2007.08b
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• pp.1327-1329
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• 2007

We developed a 4 inch (qVGA, 320x240) a-Si TFT LCD which has the function of color scanner. We have designed the novel pixel structure and got good scanning quality with minimum aperture loss. In this new pixel, the sensor capacitance was increased in double without decreasing the aperture loss.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07b
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• pp.1153-1156
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• 2005

A backlight for large-area LCD (Liquid Crystal Display)-TVs has been developed using Light Emitting Diodes (LEDs). Performances of the backlight and the methods driving the LEDs are introduced in this research. A spectral relationship between the LEDs and the color filters of a panel were investigated as well. In order to realize a CRT like dynamic effect, the area-focused luminance control (AFLC) technology was adopted in developing the backlight. Thus, a possibility of applying the LEDs to the backlight for large-area LCD-TVs was systematically proved.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07b
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• pp.1157-1160
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• 2005

In order to improve the image quality of a large size LCD-TV, the Area-Focused Luminance Control (AFLC) technology with data processing algorithm has been developed. The AFLC backlight consists of 16 U-shaped lamps, and controllable areas are divided into 8 blocks. Based on the AFLC technology, the backlight luminance of each block is automatically and separately controllable. Consequently, the contrast ratio is greatly enhanced whereas the corresponding power consumption is decreased as compared with those of conventional backlights.

• Journal of Advanced Navigation Technology
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• v.14 no.3
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• pp.452-458
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• 2010

In case of an embedded system with computing resource restrictions such as system power and cpu, the overhead due to displaying data on the computer screen may have a significant influence on the system performance. This paper describes an initialization method for LCD-driving components such as an ARM Core, an LCD controller, and an SPI(serial peripheral interface). It also introduces a pixel display function and a panel display method using virtual screen for reducing the display overhead for an LN2440SBC system with an ARM9-based S3C2440A microprocessor. A virtual screen is a large space of computer memories allocated much larger than those needed for one-time display of an image. Displaying a specific region of a virtual screen is done by assigning it as a view-port region. Such a display is useful in an embedded system when concurrently running tasks produce and display their respective results on the screen; it is especially so when the execution result of each task is partially modified, instead of being totally modified, on its turn and displayed. If the tasks running on such a system divide and make efficient use of the region of the virtual screen, the display overhead can be minimized. For the performance comparison with and without using the virtual screen, two different images are displayed in turn and the amount of time consumed for their display is measured. The result shows that the display time of the former is about 5 times faster than that of the latter.

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.914-917
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• 2008

A quad-functional built-in test circuit has been developed for DRAM-frame-memory embedded SOG-LCDs. The quad function consists of memory test, display test, serial transfer test, and parallel transfer test which is the normal operation mode for our SOG-LCD. Results of memory and display tests are shown.