Organic Light Emitting Diode Display Apparatus
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United States of America Patent
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Issued Date -
Jun 8, 2023
app pub date -
Nov 28, 2022
filing date -
Dec 6, 2021
priority date (Note) -
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Abstract
An organic light emitting display apparatus is disclosed that comprises a substrate including a first portion and a second portion; a first thin film transistor having a first polycrystalline semiconductor pattern, the first thin film transistor on the first portion of the substrate; a second thin film transistor having a first oxide semiconductor pattern, the second thin film transistor on the second portion of the substrate; and an organic light emitting device configured to emit light, the organic light emitting device connected to the second thin film transistor; wherein the first polycrystalline semiconductor pattern includes a surface that is planarized and the first oxide semiconductor pattern includes a surface that includes a plurality of protrusions.
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