Patent ID: 9142190
Filing Date: 2015-09-22
Classification: G09G

Abstract:
1. A method for compensating Mura area of wide-angle view of a flat display, comprising the steps of: 1) providing a flat panel including a number of main pixels, and a Mura area and a normal area; 2) setting two or more than two main pixels as a set of Mura area brightness adjustment units; 3) providing a driving circuit for driving the number of main pixels within the flat panel, and the driving circuit supplying a number of gamma voltages; 4) using the driving circuit to apply two or more than two different gamma voltages to the set of main pixels within the Mura area brightness adjustment units such that a gray scales of the Mura area within a center view area and a wide-angle view area are closer to a gray scales of the normal area thereby achieving a uniform brightness across the flat panel; wherein the substantial operation of the step 2) is dividing the Mura area into a number of brightness adjustment areas, each of the brightness adjustment areas includes two or more than two main pixels and having brightness adjustment units as the Mura area brightness adjustment units; wherein the step 4) further comprising following steps: 4.1) supplying two or more than two different gamma voltages to the number of main pixels within the Mura area brightness adjustment units; 4.2) observing an overall brightness of the flat panel, if the gray scales of the Mura area within the center view area and the wide-angle view area are closer to the gray scales of the normal area, then the adjustment is completed; if there is a substantial difference between the gray scales of the Mura area within the center view area and the wide-angle view area are closer to the gray scales of the normal area, then it is determined that there is an uneven brightness within the Mura area, and proceeding to step 4.3) for further adjusting; 4.3) while in adjusting the gamma voltage to the number of main pixels within the Mura area brightness adjustment units, adjusting the gamma voltage in the normal area as well so as to drive the gray scale of the central view area and wide-angle view area closer to the gray area of the normal area thereby achieving an even brightness across the flat display; and wherein each one of the main pixels within the Mura area brightness adjustment units is driven by two or more than two gamma voltages calculated by a computing method, and during the period of adjusting, if the gray scales of the Mura area within the center view area and the wide-angle view area are closer to the gray scales of the normal area, then the adjustment is completed, otherwise, continuing the adjustment till all the gamma voltages are exhausted.