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News Release > New Release : Environment Friendly and High Performance Materials for Liquid Crystal Panel. 
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New Release : Environment Friendly and High Performance Materials for Liquid Crystal Panel.
July 20, 2005

KYOCERA Chemical developed "Photo-Spacer" that doesn' t use the environmental chemicals, and it can be crating patterns by exposure and developing. And we also developed "Transparent Overcoat Resin" that has excellent transparency for color filter protection.

We have pioneered a new Molding Compounds for Semiconductor Encapsulation and Printed Circuit Board Materials to protect the environment. "Photo-Spacer" and "Transparent Overcoat Resin" are also the environment-preserving products. There are products that not only clear European environmental regulations which are called "Directive on Waste Electrical and Electronic Equipment (WEEE)" and "Restriction of Hazardous Substances (RoHS)", but also don' t use any solvents of "Ethyl Cellosolve Acetate (ECA)" which moves to reduce as an environmental control material in the electro-mechanical and electronic industries.

[ Photo-Spacer ]
The bead spacer is used to make the gap in the liquid crystal part of the liquid crystal panel constant.
On the other hand, the photo spacer can make the best use of the principle that patterning by the UV exposure is possible, thus arranging the column (pillar) by an accurate pitch. As a result, the phenomenon to obstruct an effective pixel that is the problem in the bead spacer is eliminated.
Therefore, the use of the photo spacer increases gradually.
Our development product has the following features...
 
  Feature
 
1 The resolution and shape are superior.
  2 It is possible to adjust it freely by setting shape, residual film thickness and the compression characteristic to customer' s manufacturing process.
  3 No use of any kind of solvents with strong toxicity that are environmental chemicals.

 

[ Transparent Overcoat Resin ]
"Transparent Overcoat Resin" is a material used for the color filter protection of the liquid crystal, and an important material in the liquid crystal panel manufacturing. KYOCERA Chemical developed "Transparent Overcoat Resin" that is superior ability in transparency and flatness after coating it based on our longstanding technology of the heat-resistant.
The best feature of our "Transparent Overcoat Resin" is superior ability in flatness to fill in the gaps of color filter. The excellent point of the product that the bump become 2/3 comparing with general materials. Generally, R(=Red) G(=Green) and B(=Blue) are printed on the color filter. It is important on an optical characteristic to smooth out the color filter to fill in the bump of RGB and the part of non RGB by the resin.
Moreover, this product have some following features.
 
  Feature
 
1 It is superior ability in flatness after coating.
(The bump become 2/3 comparing with general materials (0.06µm→0.04µm))
  2 It is superior ability in transparency. Especially it is superior ability in color fastness at the high temperature.
  3 It is superior ability in preservation stability

 

4 No use of any kind of solvents with strong toxicity that are the environmental control objects.

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News Release > New Release : Environment Friendly and High Performance Materials for Liquid Crystal Panel. 
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