P‐190L: Late‐News Poster: Low Frequency Driving Display to Reduce Logic Power in Liquid Crystal Display

Abstract

In the flat panel display market, as part of a differentiated competitive advantage in terms of power consumption, in order to gain a competitive edge Logic Power reduction will be addressed. This paper describes a method for reducing the current of SD-IC. The driving frequency is changed according to image. System is recognized as the frame of a still image without changing the data. If a still image, the driving frequency decreases to reduce the power consumption. If a still image, the Flicker in main issue of the existing low-speed driven is reduced, and logic power consumption is reduced.In this paper, interlace of Low Frequency has improved flicker level and lower power consumption and SD-IC thermal improvements Late-News Poster P-190L / D.-S. Oh SID 2014 DIGEST • 1199

A 550-PPI LCD using 1.5 µm channel width LTPS TFTs with low frame rate driving

“…The range of the maximum and minimum luminance in a frame is defined as flicker as shown in Fig. 14. Although the acceptable level of flicker differs depending on frame rate and driving method, 16,17,20 in our experience, approximately 0.03 is the upper limit of the flicker to be acceptable when the panel is driven in 30 Hz frame rate for the case of conventional column inversion driving method. Although the flicker is larger for 30 Hz driving than for 60 Hz driving as can be seen in Fig.…”

46‐3: Image Adaptive Refresh Rate technology for Ultra Low Power Consumption

“…This technology leads to ultimate driving scheme for low refresh rate and power saving. [9] (b) System and Display Interface Power…”