Abstract
This paper presented a new design of boost circuit in pixel, which could meet the demand for high driving voltage in some special applications and avoid the increasing cost caused by using chips with high‐voltage output. The main circuit of pixel unit contained 3 TFTs and 3 capacitors. Compared with conventional TFT‐LCD, 2 new kinds of signals were added. 1 clock signal was shared by all pixels and 1 additional scanning signal was designed for each row. Through reasonable circuit parameters and timing design, the circuit scheme proposed in this paper could achieve effective boost. The simulation showed the pixel voltage was increased by 60%, compared with the voltage provided by the data line. In the actual sample verification, the voltage was increased by 50%. Therefore, the feasibility of circuit function was verified. Details of design, simulation and verification would be introduced in the text.
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