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Method of making a colour filter array

A color filter array, atmospheric technology, applied in instruments, filters, photoengraving process of pattern surface, etc., can solve complex problems and achieve the effect of less assembly labor

Inactive Publication Date: 2010-08-18
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The first method relies on the relatively complex procedure of photolithography

Method used

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  • Method of making a colour filter array
  • Method of making a colour filter array
  • Method of making a colour filter array

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] A simple color filter array was fabricated by a combination of ALD and inkjet printed P604A by printing fluoropolymer squares to act as resist for the ALD layer. A 62 x 62 x 1 mm glass slide was first coated with a thin layer of aluminum by vacuum evaporation, followed by an approximately 200 nm thick layer of titanium oxide deposited by ALD.

[0048] A mixture of 25% w / w Fluoropel (fluorinated polymer) P604A + 75% perfluorodecalin was prepared and loaded into a Dimatix inkjet printer as described in the specification. A row of three 5 mm squares of P604A was printed with a full ink Dimatix printer as shown in Figure 5a. As shown in Figure 5b, next, the sample was coated with an approximately 50 nm thick layer of titanium oxide before printing an additional three 5 mm squares of fluoropolymer to complete the 3x3 matrix. After laying down the last layer of titanium oxide about 50nm thick, the fluoropolymer was removed using HFE 7500 solvent and gentle rubbing with nitri...

example 2

[0050] Repeat Example 1 using PVP as the mask material.

[0051] Fabricate a simple color filter array. A 62 x 62 x 1 mm glass slide was first coated with a thin layer of aluminum by vacuum evaporation, followed by an approximately 200 nm thick layer of titanium oxide deposited by ALD.

[0052] A PVP inkjet ink consisting of 10% K30, 10% ethylene glycol and 1% Triton (trinitrotoluene) X-100 was made. The latter two ingredients are added to help with jetting. A row of three 5 mm squares of PVP ink was printed using a Dimatix printer filled with ink as shown in Figure 5a. As shown in Figure 5b, next, the sample was coated with an approximately 50 nm thick titanium oxide layer before printing the other three 5 mm squares of PVP ink to complete the 3x3 matrix. After the last ~50 nm thick layer of titanium oxide, the PVP ink was removed by dipping in warm deionized water and rubbing gently with nitrile gloved hands.

[0053] A thin layer of aluminum is applied on top of this by...

example 3

[0055] Fabrication of complex color filter arrays.

[0056] A 62 x 62 x 1 mm glass slide was first coated with a "Bragg reflector" of 5 alternating layers of alumina and titania, each about 100 nm thick, starting with low index alumina and Finish. On top of this is deposited an approximately 200 nm thick layer of titanium oxide.

[0057] A mixture of 25% w / w Fluoropel (fluorinated polymer) P604A + 75% perfluorodecalin was prepared and loaded into a Dimatix inkjet printer as described in this specification. A row of three 5mm squares of P604A was printed using a Dimatix printer filled with ink as shown in Figure 5a. As shown in Figure 5b, next, the sample was coated with an approximately 50 nm thick layer of titanium oxide before printing an additional three 5 mm squares of fluoropolymer to complete the 3x3 matrix. After the last layer of titanium oxide about 50nm thick, the fluoropolymer was removed by using HFE 7500 solvent and rubbing gently with nitrile gloved hands.

...

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Abstract

A method of making a colour filter array and atmospheric barrier comprises the steps of coating a layer of semi reflecting material onto a substrate, vapour depositing an essentially transparent layer to form a light interfering layer of one thickness on top of the semi reflecting layer and one or more stages, each comprising creating a patterned layer by printing on the light interfering layer, vapour depositing an essentially transparent layer over the whole patterned layer to provide a light interfering layer when combined with the first or previous light interfering layer and removing the patterned layer by a solvent. A second layer of semi reflecting material is then coated above the last light interfering layer.

Description

technical field [0001] The invention relates to a method of manufacturing color filter arrays, in particular by vapor deposition. Background technique [0002] Color filter arrays find applications in light sensors and displays on the rear of cameras. In a display, a color filter array CFA is placed in registration in front of the white light pixels to allow viewing of colors. In sensors such as those used in cameras, CFAs are used in front of panchromatic sensors to allow detection of color. A CFA is typically an array of red, green and blue regions arranged in a pattern. A common array used in digital cameras is the Bayer pattern array. The resolution of each color is reduced as little as possible by using 2×2 cells, and among the three colors, green is the color chosen to be sensed twice in each cell because it is the most optimal for the eyes. the most sensitive color. [0003] Similar arrays can be used on displays. For example, US 4877697 describes arrays for liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G03F7/00
CPCG02B5/223G02B5/201
Inventor J·费森C·鲍尔
Owner EASTMAN KODAK CO
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