IP Library Granted Patent US 12,051,762
Granted Patent B2
US 12,051,762 · App. 18/221,635 · Granted Jul 30, 2024

Hybrid electro-optically controlled matrix-addressed systems

Inventors: Christopher Andrew Bower (Raleigh, NC); Matthew Alexander Meitl (Durham, NC); Robert R. Rotzoll (Colorado Springs, CO); Ronald S. Cok (Rochester, NY)
Assignee: X Display Company Technology Limited
H01L31/173G02B6/10H01L31/02019H01L31/02327H01L31/153
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Quick Facts
Patent No.
US 12,051,762
App. No.
18/221,635
Granted
Jul 30, 2024
Kind
B2
Abstract

An electro-optically controlled active-matrix system comprises a system substrate, row wires extending in a row direction disposed on the system substrate, a row controller providing a row electrical signal to each row wire, column light-pipes extending in a column direction disposed on the system substrate, a column controller providing a column optical signal to each column light-pipe, and pixels disposed over the system substrate. Each pixel can comprise a pixel circuit that is uniquely responsive to a row wire and to a column light-pipe, the pixel circuit receiving the row electrical signal from the row wire and receiving the column optical signal from the column light-pipe. In some embodiments, column wires carrying column electrical signals extend in a column direction over the system substrate and the pixel circuit is capacitively coupled to the row wire, the column wire, or both.

Claims (27)

1. A pixel, comprising:

a pixel substrate;

a pixel circuit operable to respond to a row electrical signal and a column optical signal, the pixel circuit disposed on, in, or over the pixel substrate; and

an inorganic light-emitting diode,

wherein the pixel circuit comprises an electrical input circuit responsive to the row electrical signal and an optical input circuit comprising a photosensor, photodiode, or phototransistor responsive to the column optical signal, and

wherein the inorganic light-emitting diode emits light in response to the row electrical signal and the column optical signal.

2. The pixel of claim 1 , comprising a fractured or separated tether.

3. The pixel of claim 1 , comprising an electrical sensing plate electrically connected to the pixel circuit.

4. The pixel of claim 3 , wherein the pixel substrate comprises a dielectric structure having a top side and a bottom side, the pixel circuit is disposed on the top side, and the electrical sensing plate is disposed on the bottom side.

5. The pixel of claim 1 , comprising connection posts extending from the pixel substrate, the connection posts electrically connected to the pixel circuit.

6. The pixel of claim 5 , wherein the pixel substrate comprises a dielectric structure having a top side and a bottom side, the pixel circuit is disposed on the top side, and the connection posts extend from the bottom side.

7. The pixel of claim 1 , wherein the pixel is a heterogeneously integrated device comprising a semiconductor device and a compound semiconductor device, wherein the semiconductor device comprises a semiconductor and the compound semiconductor device comprises a compound semiconductor different from the semiconductor.

8. The pixel of claim 1 , wherein the pixel substrate comprises a semiconductor.

9. A pixel, comprising:

a pixel circuit operable to respond to a row electrical signal and a column optical signal; and

an inorganic light-emitting diode,

wherein the pixel circuit comprises an electrical input circuit responsive to the row electrical signal and an optical input circuit comprising a photosensor, photodiode, or phototransistor responsive to the column optical signal, and

wherein the inorganic light-emitting diode emits light in response to the row electrical signal and the column optical signal.

10. The pixel of claim 9 , comprising a fractured or separated tether.

11. The pixel of claim 9 , wherein the pixel is a heterogeneously integrated device comprising a semiconductor device and a compound semiconductor device, wherein the semiconductor device comprises a semiconductor and the compound semiconductor device comprises a compound semiconductor different from the semiconductor.

12. The pixel of claim 11 , wherein the compound semiconductor device is disposed on the semiconductor device.

13. The pixel of claim 11 , wherein the inorganic light-emitting diode comprises a compound semiconductor material, the photosensor, photodiode, or phototransistor comprises a compound semiconductor material, or both.

14. The pixel of claim 9 , comprising a display substrate, and wherein the pixel circuit is disposed on the display substrate.

15. The pixel of claim 9 , wherein the inorganic light-emitting diode is disposed on the display substrate.

16. The pixel of claim 9 , wherein the photosensor, photodiode, or phototransistor is disposed on the display substrate.

17. The pixel of claim 9 , comprising a pixel substrate, the pixel substrate is disposed on the display substrate, and any one or combination of the inorganic light-emitting diode, the electrical input circuit, the optical input circuit, and the photosensor, photodiode, or phototransistor are disposed on the pixel substrate.

18. The pixel of claim 9 , comprising an integrated circuit and wherein at least a portion of any one or combination of the electrical input circuit, the optical input circuit, and the photosensor, photodiode, or phototransistor are disposed in the integrated circuit.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 28, 2026
From: X DISPLAY COMPANY TECHNOLOGY LIMITED
To: DAKTRONICS, INC.
Reel/Frame 075482/0209 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 28, 2023
From: BOWER, CHRISTOPHER ANDREW; MEITL, MATTHEW ALEXANDER; ROTZOLL, ROBERT R.; COK, RONALD S.
To: X DISPLAY COMPANY TECHNOLOGY LIMITED
Reel/Frame 064421/0810 →