Invention Grant
US08854346B2 Pixel circuit and display device 有权
像素电路和显示设备

Pixel circuit and display device
Abstract:
In a display device including a pixel circuit having a transistor with a low electron mobility, low power consumption is realized without decreasing an aperture ratio. An liquid crystal capacitor element (Clc) is formed between a pixel circuit (20) and a counter electrode (80). One ends of the pixel electrode (20), a first switch circuit (22), and a second switch circuit (23) and a first terminal of a second transistor (T2) form an internal node (N1). The other end of the first switch circuit (22) is connected to a source line (SL). The second switch circuit (23) has the other end connected to a voltage supply line (VSL), and is a series circuit of transistors (T1 and T3). A control terminal of the transistor (T1), a second terminal of the transistor (T2), and one end of the boost capacitor element (Cbst) form an output node (N2). The other end of the boost capacitor element (Cbst) and the control terminal of the transistor (T2) are connected to a selecting line (SEL) and a reference line REF, respectively. A control terminal of the transistor (T3) is connected to the selecting line (SEL) through a delay circuit (31).
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