1. Principles of Color Technology Billmeyer and Saltaman Chapter 5 Colorants Principles of Color Technology Billmeyer and Saltaman Chapter 5 Colorants Speaker: Shih-Hsun Chien ( 簡世勛 ) Advisor: Prof. Han-Ping D. Shieh ( 謝漢萍 教授 ) Prof. Yi-Pai Huang ( 黃乙白 教授 ) Display Institute, National Chiao Tung University, Hsinchu, Taiwan April 10 2008

2. 2 Flat Panel Display System Lab Outline  Selecting the colorants to use  Color as an engineering material  Conclusions

3. 3 Flat Panel Display System Lab Outline  Selecting the colorants to use  Color as an engineering material  Conclusions

4. 4 Flat Panel Display System Lab Selecting the colorants to use The more important is using than to understanding the components

5. 5 Flat Panel Display System Lab Selecting the colorants to use Experienced personnel - A patient and knowledge master covers the beginners - Because it’s backed up with actual operating experience Suppliers of colorants - A major source of information through shade cards & published material - Some commercial bias accounted, so there are maybe facts or lies (need experienced) - International Organization for Standardization (ISO) or ASTM

6. 6 Flat Panel Display System Lab Selecting the colorants to use Shade cards http://www.colorantindia.com/index.php

7. 7 Flat Panel Display System Lab Selecting the colorants to use Books and periodicals - Relatively few books to using dyes and pigments in specific industries - They are not prepared from the user’s point of the view - Published information differs from direct sales material

8. 8 Flat Panel Display System Lab Selecting the colorants to use The user’s experience - Warning : if the experience of a color technologist relative to a particular problem is contrary to the general experience that has been reported, the entire question should be re-examined - Followed exactly but the results are different from the predict - Consultation with dye or pigment supplier may be of great help

9. 9 Flat Panel Display System Lab Outline  Selecting the colorants to use  Color as an engineering material  Conclusions

10. 10 Flat Panel Display System Lab Color as an engineering material The various meanings of color - Which is seen by everyone (combination of eye, light, distribution curve) - Designer’s perspective on color: a new hue or shade added to a specific colored material -The manufacturer of colorants: a new chemical entity ; modification of an old compound (cost down) The use of colorants and coloring methods in a profitable manner

11. 11 Flat Panel Display System Lab Color as an engineering material Engineering properties of colorants - Limitations: cost of colorants, method of coloring, appearance under various illuminations, fastness (fade)…restrict to some degree the color can be achieved - No choice of materials so colorist must simply do the best - A full list of the engineering properties that are needed The closer to final consumer the choice of color is made the more flexibility the producer has. The earlier in the manufacturing cycle that the color can be selected, the greater the control and uniformity that will result.

12. 12 Flat Panel Display System Lab Color as an engineering material Color gamut - The entire range of perceived color that may be obtained under stated conditions 1. the limits of all realizable colors 2. MacAdam limits: all possible colors have a given luminance factor (Y/Yn=100) 3. the surface colors depending on diffusive & directive illumination,viewing geometry, reflectance, absorption

13. 13 Flat Panel Display System Lab Color as an engineering material 4. limitations set by working properties, reactivity of the substrate ( reduces the gamut) 5. limits set by real colorants 6. economic and engineering requirements result in a different contours pass stringent performance tests,

14. 14 Flat Panel Display System Lab Outline  Selecting the colorants to use  Color as an engineering material  Conclusions

15. 15 Flat Panel Display System Lab Conclusions - Experienced personnel - Suppliers of colorants - Books and periodicals - The user’s experience Selecting the colorants to use Color as an engineering material -The various meanings of color - Engineering properties of colorants - Color gamut

16. 16 Flat Panel Display System Lab Thank You For Your Kind Attention