Micro Solar Cell Powered Micro LED Display

• US 20160276326A1
• Filed: 03/18/2015
• Published: 09/22/2016
• Est. Priority Date: 03/18/2015
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Peter L. Chang
• Inventors: Natarajan, Kumaran, Radhakrishnan, Prakash K., Chang, Peter L., Parikh, Kunjal
• Granted Patent: US 9,484,332 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 31/0475 PV cell arrays made by cells in a planar, e.g. repetitive, configuration on a single semiconductor substrate; PV cell microarrays PV modules composed of a plurality of thin film solar cells deposited on the same substrate H01L31/046
• CPC Class Codes: H01L 31/12 structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto semiconductor devices with at least one potential barrier or surface barrier adapted for light emission H01L33/00; amplifiers using electroluminescent element and photocell H03F17/00; electroluminescent light sources per se H05B33/00
• CPC Class Codes: H01L 31/18 Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

Micro LEDs may be placed on a substrate in regularly spaced rows with an empty row between at least two successive rows of micro LED. A micro solar cell may then be placed in the empty row.

Claims

1. A method comprising:

placing micro light emitting diodes on a substrate in regularly spaced rows;

leaving an empty row between at least two successive rows of micro light emitting diodes; and

placing a micro solar cell in said empty row.

2. The method of claim 1 including placing two successive rows of micro light emitting diodes, followed by the empty row.

3. The method of claim 2 including providing driver circuitry between said successive rows of micro light emitting diodes.

4. The method of claim 1 including providing a voltage conditioning circuit in said empty row.

5. The method of claim 1 including placing two side by side micro solar cells in said empty row.

6. The method of claim 4 including connecting a series of micro solar cells to said voltage conditioning circuit.

7. The method of claim 1 including placing said solar cells and said micro light emitting diodes on said substrate using micro place and bond.

8. An apparatus comprising:

a substrate;

micro light emitting diodes arranged on the substrate in regularly spaced rows;

a micro solar cell between rows of micro light emitting diodes; and

two successive rows of micro light emitting diodes, followed by the row with a micro solar cell.

10. The apparatus of claim 8 including driver circuitry between said successive rows of micro light emitting diodes.

11. The apparatus of claim 8 including a voltage conditioning circuit in a row with a micro solar cell.

12. The apparatus of claim 8 including two side by side micro solar cells in between rows of micro light emitting diodes.

13. The apparatus of claim 11, a series of micro solar cells connected to said voltage conditioning circuit.

14. The apparatus of claim 8 including said solar cells and said micro light emitting diodes mounted on said substrate using micro place and bond.

9. (canceled)

15. A method comprising:

placing micro light emitting diodes on a substrate in regularly spaced rows;

placing a micro solar cell in between at least two successive rows of micro light emitting diodes; and

placing two successive rows of micro light emitting diodes, followed by an empty row.

17. The method of claim 15 including providing driver circuitry between said successive rows of micro light emitting diodes.

21. The method of claim 15 including placing said solar cells and said micro light emitting diodes on said substrate using micro place and bond.

16. (canceled)

18. The method of claim 16 including providing a voltage conditioning circuit in said empty row.

19. The method of claim 16 including placing two side by side micro solar cells in said empty row.

20. The method of claim 18 including connecting a series of micro solar cells to said voltage conditioning circuit.