Patent ID: 8477092

Claim:
A method of operating a display circuit, wherein the display circuit comprises a plurality of pixel circuits, each pixel circuit comprising at least two transistors in series connected to a pixel of a Liquid Crystal Display (LCD), the method comprising: performing frame loading operations, wherein each frame loading operation updates a display image of the LCD; and between frame loading operations, for each pixel circuit, holding a charge of the corresponding LCD pixel, wherein to hold a charge of a LCD pixel of a pixel circuit between frame loading operations a negative gate bias voltage is alternately applied to the transistors of said transistors in series of the pixel circuit, and when the negative gate bias voltage is applied to a least one transistor of said transistors in series of the pixel circuit, a positive gate bias voltage is applied to the at least one other transistor of said transistors in series of the pixel circuit, thereby applying a positive stress to compensate for negative stress accumulated on said at least one other transistor of said transistors in series when the negative gate bias is applied, wherein said negative gate bias voltage and positive gate bias voltage are alternately applied between frame loading operations to each one of said transistors in series.