Advanced Pixel Structure for Higher Aperture Ratio in TFT-LCD

  • Kim, Jong-Hoon (Product Engineering Part 1, LCD Business, SAMSUNG ELECTRONICS CO., LTD) ;
  • Noh, Sang-Yong (Product Engineering Part 1, LCD Business, SAMSUNG ELECTRONICS CO., LTD) ;
  • Kang, Shin-Tack (Product Engineering Part 1, LCD Business, SAMSUNG ELECTRONICS CO., LTD) ;
  • Lee, Jong-Hwan (Product Engineering Part 1, LCD Business, SAMSUNG ELECTRONICS CO., LTD) ;
  • Choi, Kwang-Soo (Product Engineering Part 1, LCD Business, SAMSUNG ELECTRONICS CO., LTD)
  • Published : 2008.10.13

Abstract

An advanced TFT-LCD structure was proposed to increase aperture ratio (AR). In this structure, metal layers formed below the data lines are used as light-blocking layers, achieving higher AR ratio than that of a conventional structure. Since average misalignment between the metal light-blocking layers and pixel electrodes is smaller than that of black matrixes on color filter glass, substantially less light-blocking areas are needed to achieve misalignment margin. The AR of the LCD panel fabricated by using proposed structure was enhanced by 18.7 % over that of the conventionally structured panel.

Keywords