Displays with minimized border regions having an apertured TFT layer for signal conductors
First Claim
1. An electronic device, comprising:
- a printed circuit substrate;
a thin-film transistor layer having an upper surface and having thin-film transistor circuitry on the upper surface that controls display pixels of different colors, wherein the thin-film transistor layer includes an array of openings, wherein the thin-film transistor layer forms part of a display for the electronic device having a layer of liquid crystal material, and wherein the thin-film transistor layer extends around an entire perimeter of each of the openings;
conductive structures that each pass through a respective one of the openings in the thin-film transistor layer, wherein the conductive structures electrically couple the thin-film transistor circuitry to circuitry on the printed circuit substrate; and
a backlight layer interposed between the printed circuit substrate and the thin-film transistor layer, wherein the backlight layer illuminates the layer of liquid crystal material.
1 Assignment
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Accused Products
Abstract
An electronic device may be provided with a display having a thin-film transistor layer. One or more holes in the thin-film transistor layer may be used to form pathways from display circuitry to other circuitry underneath the display. One or more conductive bridges may pass through holes in the thin-film transistor layer and may have one end that couples to the display circuitry and a second end that couples to a printed circuit underneath the display. These conductive bridges may be formed from wire bonding. Wire bond connections may be encapsulated with potting material to improve the reliability of the wire bond and increase the resiliency of the display. Display signal lines may be routed through holes in a thin-film transistor layer to run along a backside of the display thereby reducing the need for space in the border region for display circuitry.
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Citations
26 Claims
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1. An electronic device, comprising:
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a printed circuit substrate; a thin-film transistor layer having an upper surface and having thin-film transistor circuitry on the upper surface that controls display pixels of different colors, wherein the thin-film transistor layer includes an array of openings, wherein the thin-film transistor layer forms part of a display for the electronic device having a layer of liquid crystal material, and wherein the thin-film transistor layer extends around an entire perimeter of each of the openings; conductive structures that each pass through a respective one of the openings in the thin-film transistor layer, wherein the conductive structures electrically couple the thin-film transistor circuitry to circuitry on the printed circuit substrate; and a backlight layer interposed between the printed circuit substrate and the thin-film transistor layer, wherein the backlight layer illuminates the layer of liquid crystal material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electronic device, comprising:
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a thin-film transistor layer having a thin-film transistor layer substrate with opposing first and second surfaces, wherein an array of display pixels of different colors are formed on the first surface, wherein control lines are formed on the first surface that are configured to control the display pixels, wherein the thin-film transistor layer substrate has a plurality of openings, and wherein each of the plurality of openings extends from the first surface to the second surface; and a printed circuit that extends behind the thin-film transistor layer substrate such that the second surface is interposed between the first surface and the printed circuit, wherein the printed circuit contains signal lines that distribute control signals to the control lines through the plurality of openings, wherein a given one of the signal lines passes from the first surface of the thin-film transistor layer substrate to the printed circuit through a first opening in the plurality of openings, wherein the given one of the signal lines extends behind the thin-film transistor layer substrate on the printed circuit to a second opening in the plurality of openings, and wherein the given one of the signal lines passes from the printed circuit to the first surface of the thin-film transistor layer through the second opening to couple the printed circuit to at least one of the control lines. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification