IP Library Granted Patent US 7,517,562
Granted Patent B2
US 7,517,562 · App. 11/477,387 · Granted Apr 14, 2009

Deposition method using a uniform electric field

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,517,562
App. No.
11/477,387
Granted
Apr 14, 2009
Kind
B2
Abstract

A deposition method includes placing a substrate on a susceptor inside a chamber, the susceptor including a center pin passing through the susceptor for lifting the substrate, energizing an electrode to applying a uniform electric field to the substrate, electrically connecting a ground member extending along and attached to an entire axial length of the center pin to a ground voltage source, and forming a film on the substrate by chemical vapor deposition.

Claims (17)

1. A deposition method, comprising the steps of:

placing a substrate on a susceptor inside a chamber, the susceptor including a center pin passing through the susceptor for lifting the substrate up and down;

applying a first voltage source to the susceptor;

electrically connecting a connection member extending along and attached to an entire axial length of the center pin to the first voltage source;

applying a second voltage source to a counter electrode to generate a uniform electric field between the counter electrode and the substrate; and

forming a film on the substrate by chemical vapor deposition.

2. The method according to claim 1 , wherein placing of the substrate includes positioning the substrate in contact with a head portion of the center pin, the head portion being supported by a head supporter.

3. The method according to claim 2 , wherein the connection member is formed between the head portion and the head supporter.

4. The method according to claim 2 , wherein the connection member passes through a center portion of the head supporter.

5. The method according to claim 2 , wherein the connection member is formed along one side of the head supporter.

6. The method according to claim 2 , wherein the head portion includes aluminum.

7. The method according to claim 2 , wherein the head supporter includes a ceramic material.

8. The method according to claim 2 , wherein the head portion is formed with a conductive material, and the head supporter is formed with a material having a low coefficient of thermal expansion.

9. The method according to claim 2 , wherein the head portion is coated with an insulating material.

10. The method according to claim 1 , wherein the connection member includes an electrically conductive metal.

11. The method according to claim 1 , further comprising heating the substrate.

12. The method according to claim 11 , wherein heating the substrate includes energizing a heating coil within the susceptor.

Assignments (1)
CHANGE OF NAME Recorded Jun 19, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021147/0009 →