Rigid micro-modules with iLED and light conductor

Patent metadata

Field	Value
Publication number	US-12240262-B2
Application number	US-202318544939-A
Country	US
Kind code	B2
Filing date	Dec 19, 2023
Priority date	Nov 13, 2017
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A light-emitting module structure comprises a support substrate and a micro-module disposed on or in the support substrate that extends over only a portion of the support substrate. The micro-module comprises a rigid module substrate, an inorganic light-emitting diode, a power source, and a control circuit. The inorganic light-emitting diode, the power source, and the control circuit are disposed on or in the module substrate and the control circuit receives power from the power source to control the inorganic light-emitting diode to emit light. A light conductor is disposed on or in the support substrate and in alignment with the micro-module so that the inorganic light-emitting diode is disposed to emit light into the light conductor and the light conductor conducts the light beyond the micro-module to emit the light from the light conductor.

First claim

What is claimed is:

1. A piezo-electric device, comprising:
a piezo-electric power source for converting mechanical pressure into electrical power;
a control circuit electrically connected to the piezo-electric power source;
an output device electrically connected and responsive to the control circuit to output energy, wherein the control circuit controls the output device to output energy for a temporal output duration and the temporal output duration is temporally delayed from a press duration by a temporal delay of at least one msec, wherein the press duration is a duration during which mechanical pressure is applied to the piezo-electric power source.

2. The piezo-electric device of claim 1 , wherein the temporal output duration is less than the press duration.

3. The piezo-electric device of claim 1 , wherein the temporal output duration is greater than the press duration.

4. The piezo-electric device of claim 1 , wherein the temporal output duration is greater than or equal to one msec.

5. The piezo-electric device of claim 1 , wherein the control circuit is for converting the electrical power from one voltage to another voltage, from one current to another current, or from one temporal duration to another temporal duration.

6. The piezo-electric device of claim 1 , comprising a stack of piezo-electric elements responsive to mechanical pressure to produce electrical power, wherein the piezo-electric elements in the stack of piezo-electric elements are electrically connected in serial.

7. The piezo-electric device of claim 6 , comprising an electrical conductor disposed in the stack between at least two piezo-electric elements.

8. The piezo-electric device of claim 6 , wherein the piezo-electric elements are no more than 500 microns thick.

9. The piezo-electric device of claim 6 , wherein the stack of piezo-electric elements is no less than one mm thick.

10. The piezo-electric device of claim 6 , wherein the stack of piezo-electric elements comprises two, three, four, five, ten, twenty, fifty, or one hundred piezo-electric elements.

11. The piezo-electric device of claim 6 , wherein the stack of piezo-electric elements comprises at least three piezo-electric elements.

12. The piezo-electric device of claim 1 , wherein the stack has an area in a plane orthogonal to the stack of piezo-electric elements of no more than 100 mm 2 .

13. The piezo-electric device of claim 6 , comprising a plurality of stacks of piezo-electric elements, wherein the stacks of piezo-electric elements in the plurality of stacks of piezo-electric elements are electrically connected in parallel.

14. The piezo-electric device of claim 1 , wherein each stack of the plurality of stacks of piezo-electric elements is spatially separated from every other stack of piezo-electric elements.

15. The piezo-electric device of claim 6 , wherein one or more of the piezo-electric elements of the stack of piezo-electric elements is a piezo-electric capacitor.

16. The piezo-electric device of claim 1 , wherein the control circuit comprises circuitry for storing at least a portion of the electrical power.

17. The piezo-electric device of claim 1 , comprising a support substrate and wherein the piezo-electric power source is disposed on the support substrate.

18. The piezo-electric device of claim 17 , wherein the support substrate is flexible.

19. The piezo-electric device of claim 1 , comprising a plurality of stacks of piezo-electric elements, wherein the stacks in the plurality of stacks of piezo-electric elements are electrically connected in serial and each stack of the plurality of stacks of piezo-electric elements is spatially separated from every other stack of piezo-electric elements.

Assignees

• X Display Company Tech Ltd

Inventors

• Willner Mark
• Cok Ronald S
• Rotzoll Robert R
• Bower Christopher Andrew

Classifications

• H10W90/00

  Package configurations · CPC title

• H10N30/50

  having a stacked or multilayer structure · CPC title

• H10N30/30

  with mechanical input and electrical output, e.g. functioning as generators or sensors · CPC title

• H02N2/0085

  Leads; Wiring arrangements · CPC title

• H02N2/181

  Circuits; Control arrangements or methods · CPC title