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Methods and apparatus for correcting banding of imaged regular patterns

An imaging and patterning technology, applied in the field of imaging systems, can solve problems such as reducing the quality of color filters and streaking between scanning bands.

Inactive Publication Date: 2009-10-14
KODAK GRAPHIC COMM CANADA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, interswath striation may result, where different color transfer efficiencies cause variations between different color element rows of the color element rows and within a single row
Since these lines form a repeating pattern, it may cause visual beating which is easily perceived by the human eye, and consequently degrades the quality of the color filter

Method used

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  • Methods and apparatus for correcting banding of imaged regular patterns
  • Methods and apparatus for correcting banding of imaged regular patterns
  • Methods and apparatus for correcting banding of imaged regular patterns

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Embodiment Construction

[0042] Methods and apparatus for imaging patterns of repeating elements (eg, stripes, blocks, etc.) using a multi-channel imager can adjust individual channels to reduce streaking. Such methods and devices may find application, for example, in the manufacture of color filters. The channels are adjusted based on the optical properties of the imaged pattern.

[0043]Color filters for LCD display panels have color elements that can be arranged in any of a variety of configurations. A striped configuration has alternating red, green, and blue columns. A mosaic configuration has color elements that alternate along two directions. The triangular configuration has red, green and blue color filter elements arranged in a triangular pattern.

[0044] FIG. 1A shows a portion of a color filter 10 in a stripe configuration. Color filter 10 includes a plurality of red, green and blue color elements 12 , 14 and 16 formed in alternating columns on substrate 18 . The color elements 12, 14...

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Abstract

The multi-channel imaging head is calibrated according to a predetermined regular pattern to minimize swath-to-swath variation during imaging of the regular pattern. The imaging parameters of the imaging head are optimized according to a predetermined regular pattern.

Description

[0001] References to related applications [0002] This application claims priority to US Patent Application No. 60 / 668,799, filed April 6, 2005, which is hereby incorporated by reference. For the United States, this application claims the benefit of US Patent Application No. 60 / 668,799 under 35 U.S.C. §119. technical field [0003] The present invention relates to imaging systems and to methods for evaluating and correcting banding caused by imaging of regular patterns. Background technique [0004] A common technique for manufacturing displays and semiconductor electronics involves several imaging steps. Typically, at each step, a substrate coated with a resist or other photosensitive material is exposed to radiation through a photomask to effect some change. Each step has a certain degree of risk of failure. The potential for each step to fail reduces the overall process yield and increases the cost of the finished product. [0005] A specific example is the manufactu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10G02B27/00H04N1/028G02B5/20
CPCH04N1/401H04N5/3653H04N1/4078G02B27/0031G02B5/201H04N25/672H04N1/0288
Inventor V·卡拉修克H·R·茨维克W·D·张J·V·卡斯帕S·阿夫鲁泽
Owner KODAK GRAPHIC COMM CANADA CO