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US 2020/0052033 A1Published application
Image display device
AssigneeSharp Kabushiki Kaisha
InventorKATSUJI IGUCHI
Life of this patent
Estimating the term…
Abstract
In a pixel, at least two sets of a pair of wiring lines, that is connected to a pair of electrodes of a micro-LED and is coupled to a pixel circuit, are disposed, the pixel circuit has a first LED drive circuit that supplies a current to the micro-LED and a second LED drive circuit that substitutes for the first LED drive circuit, and the pixel circuit also has a switching device that short-circuits the pair of wiring lines.
Claims20
An image display device, comprising:
- an array of pixels, each pixel has at least one micro-LED;
- a backplane substrate having an array of pixel circuits corresponding to the pixels, each pixel circuit comprising:
- a set of signal lines;
- a power supply line and a ground line;
- a first LED drive circuit;
- a second LED drive circuit;
- a plurality of pairs of a first terminal and a second terminal;
- wiring lines which connect the first LED drive circuit with the first terminals;
- and
- a switching device which electrically connects the first terminals with the second terminals,
- wherein each of the micro-LEDs has a pair of electrodes that are connected with one of the pairs of the first terminal and the second terminal.
8 more elements
An image display device, comprising:
- an array of pixels, each pixel has at least one micro-LED;
- a backplane substrate having an array of pixel circuits corresponding to the pixels, each pixel circuit comprising:
- a set of signal lines;
- a power supply line and a ground line;
- a plurality of pairs of a first terminal and a second terminal;
- a micro-chip comprising:
- a first LED drive circuit;
- a switching device which electrically connects the first terminals with the second terminals;
- and
- wiring lines which connect the micro-chip with the first terminals,
- wherein the pixel circuit has a space where an extra micro-chip is disposable and the wiring lines extend to the space.
8 more elements
An image display device, comprising:
- an array of pixels, each pixel has at least one micro-LED;
- a backplane substrate having an array of pixel circuits corresponding to the pixels, each pixel circuit comprising:
- a set of signal lines;
- a power supply line and a ground line;
- a first LED drive circuit;
- a plurality of pairs of a first terminal and a second terminal;
- wiring lines which connect the first LED drive circuit with the first terminals;
- and
- a switching device which electrically connects the first terminals with the second terminals,
- wherein each of the micro-LEDs has a pair of electrodes that are connected with one of the pairs of the first terminal and the second terminal and the switching device contains a thin film transistor disposed on the backplane substrate.
7 more elements
Dependencies are inferred from the claim text.