Pixel-Division Technology for High-Quality Vertical-Alignment LCDs

• Published in: IEEE electron device letters Vol. 31; no. 9; pp. 987 - 989
• Main Authors: Park, Seung Beom, Song, Jang-Kun, Um, Yoonsung, Kim, Kyeong-Hyeon
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-09-2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Companies; Competition; Design. Technologies. Operation analysis. Testing; Devices; Display; Displays; Electric potential; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; Gates; Image enhancement; Image quality; Integrated circuits; Liquid crystal displays; liquid crystal displays (LCDs); Manufacturing; Plasma displays; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Side effects; Thin film transistors; Topology; Transistors; Voltage; Displays; Bus(channel); Data bus; Image quality; image enhancement; Interconnection; Integrated circuit; thin-film transistors; liquid crystal displays (LCDs); Liquid crystal displays; Vertical alignment; Thin film transistor; Flat panel displays
• ISSN: 0741-3106; 1558-0563
• DOI: 10.1109/LED.2010.2052777

An innovative technology, charge-shared super patterned-electrode vertical-alignment (CS-SPVA), used for improving off-axis image quality within VA liquid crystal display (VA-LCD) is proposed. The CS-SPVA imposes different electric voltages with two or three subpixels automatically by a unique charge-sharing topology without increasing the number of data or gate bus lines, which results in significantly improved off-axis image quality without serious side effects. In particular, the three-subpixel-CS-SPVA shows the best off-axis image quality reported so far for the VA-type LCDs. The proposed technology may be the ultimate solution in overcoming the vulnerable point of VA-LCD for severe competition with alternative LCD technology.