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US 7,923,057 B2Granted
Methods and apparatus for reducing irregularities in color filters
AssigneeApplied Materials, Inc.
InventorsShinichi Kurita, Bassam Shamoun
Life of this patent
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Abstract
Methods, apparatus and systems are disclosed for printing color filters for flat panel displays and avoiding mura effects by depositing a plurality of ink drops on a substrate within a column of pixel wells and intentionally varying the size and/or the relative lateral position of the ink drops deposited in the pixel wells. Numerous other aspects are disclosed.
Claims32
A method comprising:
- depositing a plurality of ink drops on a substrate within a column of pixel wells;
- and
- intentionally varying a size of the ink drops ejected from a given nozzle and deposited in the pixel wells,
- wherein the size of the ink drops is varied randomly to prevent an occurrence of a mura irregularity.
1 more element
A method comprising:
- depositing a plurality of ink drops on a substrate within a column of pixel wells;
- and
- intentionally varying a relative lateral position of the ink drops deposited in the pixel wells,
- wherein the relative lateral position of the ink drops is varied randomly to prevent an occurrence of a mura irregularity.
1 more element
A method comprising:
- depositing a plurality of ink drops on a substrate within a column of pixel wells;
- and
- intentionally varying a size of the ink drops ejected from a given nozzle and deposited in the pixel wells,
- wherein a nominal tolerance of the size of the ink drops is increased to prevent an occurrence of a mura irregularity.
1 more element
A method comprising:
- depositing a plurality of ink drops on a substrate within a column of pixel wells;
- and
- intentionally varying a relative lateral position of the ink drops deposited in the pixel wells,
- wherein a nominal tolerance of the relative lateral position of the ink drops is increased to prevent an occurrence of a mura irregularity.
1 more element
Dependencies are inferred from the claim text.