Displays with silicon and semiconducting oxide thin-film transistors
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A technology of oxide thin film and liquid crystal display, which can be applied to the field on the substrate, and can solve the problems of excessive leakage current, non-uniformity, poor area efficiency, etc.
Active Publication Date: 2016-03-16
APPLE INC
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[0007] If care is not taken, the thin film transistor circuitry in the display pixels and the display driver circuitry of the display c
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[0029] Displays in electronic devices may have driver circuits for displaying images on an array of display pixels. exist figure 1 An example display is shown in . Such as figure 1 As shown, display 14 may have one or more layers such as substrate 24 . A layer such as substrate 24 may be formed from a planar rectangular layer of material such as a planar glass layer. Display 14 may have an array of display pixels 22 for displaying images to a user. The array of display pixels 22 may be formed from rows and columns of display pixel structures on a substrate 24 . There may be any suitable number of rows and columns in the array of display pixels 22 (eg, ten or more, one hundred or more, or one thousand or more).
[0030] Solder or a conductive adhesive may be used to couple display driver circuitry such as display driver integrated circuit 16 to conductive paths such as metal traces on substrate 24 . Display driver integrated circuit 16 (sometimes referred to as a timing c...
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Abstract
An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.
Description
[0001] This patent application claims a continuation-in-part of U.S. Patent Application 14 / 249,716, filed April 10, 2014, U.S. Patent Application 14,228,098, filed March 27, 2014, U.S. Patent Application 14 / 2014, filed March 28, 2014 229,232, the priority of U.S. Patent Application 14 / 228,070, filed March 27, 2014, and Provisional Patent Application 61 / 869,937, filed August 26, 2013, which are hereby incorporated by reference in their entirety. Background technique [0002] The present invention relates generally to electronic devices, and more particularly to electronic devices having displays with thin film transistors. [0003] Electronic devices often include displays. For example, cellular telephones and portable computers include displays for presenting information to users. [0004] Displays such as liquid crystal displays are formed from multiple layers. For example, a liquid crystal display may have upper and lower polarizer layers, a color filter layer comprising a...
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