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Display panel and display device

  • US 9,653,482 B2
  • Filed: 02/29/2016
  • Issued: 05/16/2017
  • Est. Priority Date: 03/03/2015
  • Status: Active Grant
First Claim
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1. A display panel, comprising:

  • a thin film transistor (TFT) substrate comprising a TFT and a substrate, wherein the TFT is disposed on the substrate and comprises a gate, a metal oxide layer, a source, a drain and a protection layer, the gate is disposed corresponding to the metal oxide layer, the protection layer is disposed on the metal oxide layer, each of the source and the drain contacts the metal oxide layer through an opening of the protection layer, and one side of the gate or one side of the metal oxide layer partially overlaps at least one of the openings, wherein the metal oxide layer acts as a channel layer of the TFT, a dielectric layer is disposed between the gate and the channel layer, and at least one part of the dielectric layer is under the one of the openings, the dielectric layer disposed under the one of the openings has a first thickness, the dielectric layer disposed between the channel layer and the gate has a second thickness, the difference between the second thickness and the first thickness is lamer than zero and less than 3000 Å

    , or the difference is larger than zero and less than the thickness of the protection layer; and

    a display medium layer disposed on the TFT substrate.

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