Abstract
This paper demonstrates a novel low‐temperature‐poly‐Si thin film transistor (LTPS TFTs) gate driver with an isolated gate cascading output structure and staggered time node driving method to enhance the driving ability for high PPI VR display. The driver supports Foveated Rendering Display (FRD) mode, which enables eye tracking by exchanging two processes. Compared with conventional ones, the proposed driver shows enhanced driving ability due to the separation of gate output and gate cascading. Besides, the proposed gate driver reduces layout space for high PPI VR display by adopting a single cascade dual driving circuit structure. The proposed circuit still works well when Vth deviates by 3V and Ion decreases to 50%.
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