IP Library Granted Patent US 9,158,190
Granted Patent B2
US 9,158,190 · App. 13/587,773 · Granted Oct 13, 2015

Optical imaging writer system

Inventors: Jang Fung Chen (Cupertino, CA); Thomas Laidig (Richmond, CA)
Assignee: APPLIED MATERIALS, INC.
G03B27/62G03F7/703G03F7/70275G03F7/70291G03F7/70508
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Quick Facts
Patent No.
US 9,158,190
App. No.
13/587,773
Granted
Oct 13, 2015
Kind
B2
Abstract

System and method for applying mask data patterns to substrate in a lithography manufacturing process are disclosed. In one embodiment, a parallel imaging writer system includes a plurality of spatial light modulator (SLM) imaging units, where each of the plurality of SLM imaging units includes one or more illumination sources, one or more alignment sources, one or more projection lenses, and a plurality of micro mirrors configured to project light from the one or more illumination sources to the corresponding one or more projection lens. The parallel imaging writer system further includes a controller configured to control the plurality of SLM imaging units, where the controller tunes each of the SLM imaging unit individually in writing a mask data to a substrate.

Claims (60)

1. An imaging writer system, comprising:

a plurality of spatial light modulator (SLM) imaging units,

wherein each of the plurality of SLM imaging units includes one or more distinct illumination sources, one or more alignment sources, one or more projection lenses, and a plurality of micro mirrors configured to project light from the one or more distinct illumination sources to the corresponding one or more projection lens; and

a controller configured to control the plurality of SLM imaging units, wherein the controller tunes each of the SLM imaging unit individually in writing a mask data to a substrate in a lithography manufacturing process.

2. The imaging writer system of claim 1 , wherein the SLM imaging unit is a digital micro-mirror device, wherein the digital micro-mirror device is configured to tilt at predetermined angles, representing On, Off, or Flat states respectively.

3. The imaging writer system of claim 1 , wherein the SLM imaging unit is a grating light valve device that reflects incident light specularly.

4. The imaging writer system of claim 1 , wherein

the plurality of SLM imaging units are arranged in a parallel array to a precision of millimeter range between the SLM imaging units; and

the plurality of micro-mirrors are controlled to a precision of nanometer range.

5. The imaging writer system of claim 4 , wherein

the projection lenses are tuned electronically to a precision of micron range.

6. The imaging writer system of claim 1 , wherein the mask data comprises:

a first set identifiers for identifying run-in conditions of mirror pixels within a SLM imaging unit; and

a second set of identifiers for identifying run-out conditions of mirror pixels within a SLM imaging unit.

7. A method for applying mask data patterns to substrate in a lithography manufacturing process, comprising:

providing a plurality of spatial light modulator (SLM) imaging units,

wherein each of the plurality of SLM imaging units includes one or more distinct illumination sources, one or more alignment sources, one or more projection lenses, and a plurality of micro mirrors configured to project light from the one or more distinct illumination sources to the corresponding one or more projection lens;

controlling each of the SLM imaging unit individually to write the plurality of partitioned mask data patterns to the substrate.

8. The method of claim 7 , wherein providing a plurality of SLM imaging units comprises:

arranging the plurality of SLM imaging units in a parallel array to a precision of millimeter range between the SLM imaging units; and

controlling the plurality of micro-mirrors to a precision of nanometer range.

9. The method of claim 8 , further comprising:

tuning the projection lenses electronically to a precision of micron range.

10. The method of claim 7 , wherein controlling each of the SLM imaging unit comprises:

receiving a mask data pattern to be written to a substrate; and

processing the mask data pattern to form a plurality of partitioned mask data patterns corresponding to different areas of the substrate.

11. The method of claim 10 , wherein controlling each of the SLM imaging unit further comprises:

identifying run-in conditions of mirror pixels in an overlapped area between two SLM imaging units using a first set of identifiers within a SLM imaging unit; and

controlling the SLM imaging unit to write its associated partitioned mask data pattern in the overlapped area in the substrate.

12. The method of claim 10 , wherein controlling each of the SLM imaging unit further comprises:

identifying run-out conditions of mirror pixels in an overlapped area between two SLM imaging units using a second set of identifiers within a SLM imaging unit; and

controlling the SLM imaging unit to write its associated partitioned mask data pattern in the overlapped area in the substrate.

13. The method of claim 10 , wherein controlling each of the SLM imaging unit further comprises:

detecting a region of uneven contours in the substrate;

applying focus averaging to the region of uneven contours associated with a SLM imaging unit;

applying the focus averaging to surrounding areas associated with SLM imaging units in the neighborhood of the SLM imaging unit; and

controlling the SLM imaging unit to write its associated partitioned mask data pattern to the substrate.

14. A computer program product comprising a non-transitory medium storing computer programs for execution by one or more computer systems, the computer program product comprising:

code for operating a plurality of spatial light modulator (SLM) imaging units,

wherein each of the plurality of SLM imaging units includes one or more distinct illumination sources, one or more alignment sources, one or more projection lenses, and a plurality of micro mirrors configured to project light from the one or more distinct illumination sources to the corresponding one or more projection lens;

code for controlling each of the SLM imaging unit individually to write the plurality of partitioned mask data patterns to a substrate in a lithography manufacturing process.

15. The computer program product of claim 14 , wherein code for operating a plurality of SLM imaging units comprises:

code for arranging the plurality of SLM imaging units in a parallel array to a precision of millimeter range between the SLM imaging units; and

code for controlling the plurality of micro-mirrors to a precision of nanometer range.

16. The computer program product of claim 15 , further comprising:

code for tuning the projection lenses electronically to a precision of micron range.

17. The computer program product of claim 14 , wherein code for controlling each of the SLM imaging unit comprises:

code for receiving a mask data pattern to be written to a substrate; and

code for processing the mask data pattern to form a plurality of partitioned mask data patterns corresponding to different areas of the substrate.

18. The computer program product of claim 17 , wherein code for controlling each of the SLM imaging unit further comprises:

code for identifying run-in conditions of mirror pixels in an overlapped area between two SLM imaging units using a first set of identifiers within a SLM imaging unit; and

code for controlling the SLM imaging unit to write its associated partitioned mask data pattern in the overlapped area in the substrate.

19. The computer program product of claim 17 , wherein code for controlling each of the SLM imaging unit further comprises:

code for identifying run-out conditions of mirror pixels in an overlapped area between two SLM imaging units using a second set of identifiers within a SLM imaging unit; and

code for controlling the SLM imaging unit to write its associated partitioned mask data pattern in the overlapped area in the substrate.

20. The computer program product of claim 17 , wherein code for controlling each of the SLM imaging unit further comprises:

code for detecting a region of uneven contours in the substrate;

code for applying focus averaging to the region of uneven contours associated with a SLM imaging unit;

code for applying the focus averaging to surrounding areas associated with SLM imaging units in the neighborhood of the SLM imaging unit; and

code for controlling the SLM imaging unit to write its associated partitioned mask data pattern to the substrate.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 23, 2015
From: PINEBROOK IMAGING INC.
To: APPLIED MATERIALS, INC.
Reel/Frame 034797/0686 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 8, 2014
From: PINEBROOK IMAGING TECHNOLOGY, LTD.
To: PINEBROOK IMAGING, INC.
Reel/Frame 033908/0783 →
SECURITY INTEREST Recorded Apr 17, 2014
From: PINEBROOK IMAGING, INC.
To: APPLIED VENTURES, LLC
Reel/Frame 032712/0642 →
Continuity (3)
Continuation 12337504 · Dec 17, 2008
Provisional Application 61099495 · Sep 23, 2008
Related Publication 20120307225A1 · Dec 6, 2012