PIXEL CIRCUIT AND DISPLAY DEVICE Russian patent published in 2014 - IPC G09G3/294 G02F1/1368 

FIELD: information technology.

SUBSTANCE: in the pixel circuit, a liquid crystal capacitor element Clc is inserted between a pixel electrode 20 and a counter electrode 80. The pixel electrode 20, one terminal of a first switch circuit 22, one terminal of a second switch circuit 23 and a first terminal of a second transistor T2 form an internal node N1. The other terminals of the first switch circuit 22 and the second switch circuit 23 are connected to a source line SL. The second switch circuit 23 is a series circuit consisting of a first transistor T1 and a diode D1. A control terminal of the first transistor T1, a second terminal of a second transistor T2 and one terminal of a boost capacitor element Cbst form an output node N2. The other terminal of the boost capacitor element Csbt and the control terminal of the second transistor T2 are connected to a boost line (BST) and a reference line (REF), respectively. Diode D1 has a rectification function from the source line SL to the internal node N1.

EFFECT: preventing deterioration of liquid crystal display and deterioration of the quality of display with low power consumption without reducing luminosity.

36 cl, 40 dwg