Linear high packing density for LED arrays

Patent metadata

Field	Value
Publication number	US-9513052-B2
Application number	US-201615130751-A
Country	US
Kind code	B2
Filing date	Apr 15, 2016
Priority date	Oct 11, 2013
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

Apparatus for providing energy to a process chamber are provided herein. In one embodiment, the apparatus include a supporting substrate, a first plurality of solid state light sources disposed on a first surface of the supporting substrate, and a second plurality of solid state light sources disposed on the top surface of the supporting substrate, wherein the first and second plurality of solid state light sources are aligned and electrically isolated from each other, and the first plurality of solid state light sources is in physical contact with the second plurality of solid state light sources.

First claim

The invention claimed is:

1. An apparatus for providing radiant energy to a process chamber, the apparatus comprising:
a supporting substrate;
a first plurality of solid state light sources disposed on a first surface of the supporting substrate; and
a second plurality of solid state light sources disposed on the first surface of the supporting substrate, wherein the first and second plurality of solid state light sources are adjacent and aligned, and each solid state light source in the first plurality of solid state light sources is not directly connected to any solid state light source in the second plurality of solid state light sources, and wherein voltage drop between a first solid state light source and a second solid state light source immediately adjacent to the first solid state light source in the first plurality of solid state light sources and voltage drop between a third solid state light source and a fourth solid state light source immediately adjacent to the third solid state light source in the second plurality of solid state light sources are equal, wherein the first solid state light source and the third solid state light source are immediately adjacent to each other, voltage rating of the first solid state light source and voltage rating of the third solid state light source are matched, the second solid state light source and the fourth solid state light source are immediately adjacent to each other, and voltage rating of the second solid state light source and voltage rating of the fourth solid state light source are matched.

2. The apparatus of claim 1 , wherein each solid state light source in the first plurality of solid state light sources is electrically connected in series between a first contact and a second contact, and each solid state light source in the second plurality of solid state light sources is electrically connected in series between a third contact and a fourth contact, and wherein the first contact and the third contact have a first electric potential, and the second contact and the fourth contact have a second electric potential that is different from the first electric potential.

3. The apparatus of claim 2 , wherein the first and second plurality of solid state light sources are arranged in multiple concentric rings of increasing diameter on the first surface of the supporting substrate.

4. The apparatus of claim 1 , wherein the solid state light sources of the first and second plurality of solid state light sources are light emitting diodes (LEDs) or LASERs.

5. An apparatus for providing radiant energy to a process chamber, the apparatus comprising:
a supporting substrate;
a first plurality of solid state light sources disposed on a first surface of the supporting substrate; and
a second plurality of solid state light sources disposed on the first surface of the supporting substrate, wherein each solid state light source in the first plurality of solid state light sources is not directly connected to any solid state light source in the second plurality of solid state light sources, and voltage potential differences between the first plurality of solid state light sources and the second plurality of solid state light sources is less than an arcing potential.

6. The apparatus of claim 5 , wherein the first and second plurality of solid state light sources are arranged in multiple concentric rings of increasing diameter on the first surface of the supporting substrate.

7. The apparatus of claim 5 , wherein the solid state light sources of the first and second plurality of solid state light sources are light emitting diodes (LEDs) or LASERs.

8. The apparatus of claim 5 , wherein the first contact and the third contact are positioned on a second surface of the supporting substrate, and wherein the first and second plurality of solid state light sources are in electrical communication with the first contact and the third contact, respectively, through a connection via formed through the supporting substrate.

9. The apparatus of claim 5 , wherein each solid state light source in the first plurality of solid state light sources is electrically connected in series between a first contact and a second contact, and each solid state light source in the second plurality of solid state light sources is electrically connected in series between a third contact and a fourth contact, and wherein the first contact and the third contact have different electric potential, and wherein the second contact and the fourth contact have different electric potential.

10. The apparatus of claim 5 , wherein each solid state light source in the first plurality of solid state light sources is electrically connected in series between a first contact and a second contact, and each solid state light source in the second plurality of solid state light sources is electrically connected in series between a third contact and a fourth contact, and wherein the first contact and the third contact are electrically connected, and wherein the second contact and the fourth contact are electrically connected.

11. The apparatus of claim 5 , wherein each solid state light source in the first plurality of solid state light sources is electrically connected in series between a first contact and a second contact, and each solid state light source in the second plurality of solid state light sources is electrically connected in series between a third contact and a fourth contact, and wherein the first contact and the third contact are connected to a single electrical terminal, and wherein the second contact and the fourth contact are connected to a single electrical terminal.

12. The apparatus of claim 5 , wherein each solid state light source in the first plurality of solid state light sources is electrically connected in series between a first contact and a second contact, and each solid state light source in the second plurality of solid state light sources is electrically connected in series between a third contact and a fourth contact, and wherein the first contact and the third contact are positioned at a peripheral region of the supporting substrate.

13. An apparatus for providing energy to a process chamber, the apparatus comprising:
a supporting substrate; and
a plurality of adjacent and aligned strings of solid state light sources disposed on a first surface of the supporting substrate, wherein each string of solid state light sources has a plurality of light emitting elements electrically coupled in series, and wherein each light emitting element in each string of solid light sources is not directly connected to any light emitting element in the immediately adjacent to string of solid state light sources, and voltage potential differences between each string of solid state light source and the immediately adjacent to string of solid state light sources is less than arcing potential.

14. The apparatus of claim 13 , wherein the solid state light sources of the first and second plurality of solid state light sources are light emitting diodes (LEDs) or LASERs.

15. The apparatus of claim 13 , wherein each light emitting element in each string of solid state light sources is electrically coupled in series between a first contact terminal and a second contact terminal that has an electric potential different from an electric potential of the first contact terminal.

16. The apparatus of claim 15 , wherein the first contact terminal and the second contact terminal are positioned at a peripheral region of the supporting substrate.

17. The apparatus of claim 13 , wherein the first contact termin

Assignees

• Applied Materials Inc

Inventors

• Johnson Joseph R
• Ranish Joseph M

Classifications

• H10P72/0436 Primary

  mainly by radiation · CPC title

• F26B3/30 Primary

  from infrared-emitting elements {(by radiation emanating from passages containing heated fluids other than combustion gases F26B23/10)} · CPC title

• F21K9/20

  Light sources comprising attachment means · CPC title

• H10H29/142

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title

• F21K9/30

  Mechanical Engineering · mapped topic