26.4: Novel Driving and Panel Design of Frame Inversion Method for High Aperture Ratio in the Large Size and High Resolution LCD TV Panel

Abstract

The 120Hz frame inversion driving FHD LCD TV panels were fabricated without image degradations seen such as the luminance gradient and the horizontal crosstalk. The panels had the higher aperture ratio because of the wider electrode space between the pixel and common electrode than conventional S-IPS. The novel driving method of gate-low-voltage-swing was used to remove the luminance gradient and the new panel design of divided-common-feeding was adopted to suppress the horizontal crosstalk. These technologies were very successful to achieve the high aperture ratio in the S-IPS panel without increase of the panel cost.

An optimal design method for minimization of common voltage distortion in large‐sized and high‐resolution liquid crystal displays

“…Figure shows the block diagram of the panel architecture and a compensation circuit for V COM distortion . In the panel architecture, the display area includes the mesh lines for uniform V COM .…”

“…Among the inversion methods, the dot‐inversion or column‐inversion method was recently applied because the positive and negative polarities of V PXL are equally placed in the horizontal direction of the panel . In addition, the panel architecture and compensation circuit were employed to compensate for the V COM distortion in large‐sized and high‐resolution LCDs . The specific panel architecture and compensation circuit of Park et al .…”

“…could only compensate for the V COM_REF of the panel. The panel architecture and compensation circuit of Lee et al . and Jeong et al .…”

“…14,15 In addition, the panel architecture and compensation circuit were employed to compensate for the V COM distortion in large-sized and high-resolution LCDs. [16][17][18] The specific panel architecture and compensation circuit of Park et al 16 could only compensate for the V COM_REF of the panel. The panel architecture and compensation circuit of Lee et al 17 and Jeong et al 18 could compensate for the V COM distortion caused by the capacitive noise coupled between electrodes but were too complicated because there were individually separated compensation lines in the panel architecture and multiple compensation circuits.…”

Adaptive one-dimensional dimming technique for liquid crystal displays with low power consumption and high image quality

“…[1][2][3][4][5][6] To reduce power consumption while increasing image quality in LCDs, various technologies have been studied such as backlight dimming, [7][8][9][10][11][12][13][14][15] inversion methods, [16][17][18] and charge sharing methods. [19][20][21][22][23][24] Based on a demand for slim designs and low power consumption, a side-lit light-emitting diode (LED) backlight unit (BLU) has been widely adopted not only in mobile LCD applications but also in large LCDs. [9][10][11][12][13][14] To further reduce power consumption in LCDs, a dimming technique was developed.…”