Larger displays formed by multiple integrated LED array micro-displays
First Claim
1. A display formed by sub-displays comprising:
- a plurality of sub-displays each including;
an array of light-emitting pixels, each pixel including at least one light-emitting element formed on a first side of a semiconductor substrate, the at least one light-emitting element comprising multiple layers epitaxially grown on a semiconductor surface of the semiconductor substrate on the first side;
integrated circuits formed on a second side of the semiconductor substrate;
conductive electrodes penetrating through the semiconductor substrate and coupling the light-emitting elements of the array of light-emitting pixels on the first side to the integrated circuits on the second side; and
a conductive grid array package formed on the second side of the semiconductor substrate and conductively coupled to the integrated circuits; and
interconnects conductively coupled to the conductive grid array packages of the plurality of sub-displays.
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Abstract
Larger displays formed by multiple sub-displays, e.g., integrated light-emitting diode (LED) pixel array micro-displays, and methods of operating and making the larger displays are provided. An example larger display includes a plurality of sub-displays arranged on a display substrate. Each sub-display includes an array of light-emitting pixels formed on a first side of a substrate, each pixel including at least one light-emitting element, integrated circuits formed on a second side of the substrate, conductive electrodes penetrating through the substrate and coupling the array of light-emitting pixels to the integrated circuits, and a conductive grid array package, e.g., a ball grid array (BGA) package, formed on the second side of the substrate and conductively coupled to the integrated circuits. Interconnects are conductively coupled to the conductive grid array packages of the plurality of sub-displays to form the larger display.
42 Citations
25 Claims
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1. A display formed by sub-displays comprising:
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a plurality of sub-displays each including; an array of light-emitting pixels, each pixel including at least one light-emitting element formed on a first side of a semiconductor substrate, the at least one light-emitting element comprising multiple layers epitaxially grown on a semiconductor surface of the semiconductor substrate on the first side; integrated circuits formed on a second side of the semiconductor substrate; conductive electrodes penetrating through the semiconductor substrate and coupling the light-emitting elements of the array of light-emitting pixels on the first side to the integrated circuits on the second side; and a conductive grid array package formed on the second side of the semiconductor substrate and conductively coupled to the integrated circuits; and interconnects conductively coupled to the conductive grid array packages of the plurality of sub-displays. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of fabricating a display by multiple sub-displays, comprising:
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fabricating a plurality of sub-displays on one or more semiconductor substrates, including; forming an array of sub-displays on each, each sub-display including; an array of light-emitting pixels, each pixel including at least one light-emitting element formed on a first side of the substrate, the at least one light-emitting element comprising multiple layers epitaxially grown on a semiconductor surface of the substrate on the first side; integrated circuits formed on a second side of the substrate; conductive electrodes penetrating through the substrate and coupling the light-emitting elements of the array of light-emitting pixels on the first side to the integrated circuits on the second side; and a conductive grid array package formed on the second side of the substrate and coupled to the integrated circuits;
thenobtaining individual sub-displays from the one or more semiconductor substrates; arranging the individual sub-displays on a display substrate; and forming interconnects conductively coupled to the conductive grid array packages of the sub-displays arranged on the display substrate to form the display. - View Dependent Claims (19, 20, 21, 22)
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23. A method of displaying an image or video on a display formed by multiple sub-displays, the method comprising:
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receiving an instruction to display an image or video on the display; analyzing, by a control unit of the display, the image or video to obtain image or video data; transmitting, by the control unit, the image or video data to a plurality of sub-displays of the display via interconnects coupled to grid array packages formed on the plurality of sub-displays, each sub-display comprising an array of light emitting pixels and receiving a respective part of the image/video data; at each sub-display, analyzing, by control electronics formed on a first side of a semiconductor substrate of the sub-display, the respective part of image or video data to generate secondary image or video data; transmitting, by the control electronics, the secondary image or video data to display drivers; selecting, by the display drivers, particular light emitting pixels formed on the semiconductor substrate, each of the particular light emitting pixels including at least one light-emitting element formed on a second side of the semiconductor substrate, the at least one light-emitting element comprising multiple layers epitaxially grown on a semiconductor surface of the semiconductor substrate on the second side, the light-emitting elements of the particular light emitting pixels being coupled to the first side via conductive electrodes penetrating through the semiconductor substrate; and controlling, by the display drivers, the selected particular light emitting pixels to emit light corresponding to the secondary image or video data; and transmitting, by the controller, control signals to the plurality of sub-displays, such that the sub-displays are operable to display an integrated image or video representing the image or video data based on the control signals. - View Dependent Claims (24, 25)
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Specification