Abstract

The UV-excited flat lighting (UFL) technique differs from conventional fluorescent lamp or LED illumination. It involves using a remote phosphor film to convert the wavelength of UV light to visible light, achieving high brightness and planar and uniform illumination. In particular, UFL can accomplish compact size, low power consumption, and symmetrical dual-sided illumination. Additionally, UFL utilizes a thermal radiation mechanism to release the large amount of heat that is generated upon illumination without thermal accumulation. These characteristics of the UFL technique can motivate a wide range of lighting applications in thin-film transistor LCD backlighting or general lighting.

© 2010 Optical Society of America

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References

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  1. http://www.kismart.com.tw/double_sided.html.
  2. S. Hwang, H. Kim, C. Kim, and S. Lim, in SID Symposium Digest (2009), Vol. 40, pp. 1787–1789.
  3. Y. S. Tsai, “Backlight module,” U.S. patent 6,995,815(February 7, 2006).
  4. H. T. Huang, C. C. Tsai, and Y. P. Huang, J. Display Technol. 6, 128 (2010).
    [CrossRef]
  5. K. Kakinuma, Jpn. J. Appl. Phys. 45, 4330 (2006).
    [CrossRef]
  6. M. Bass, E. W. Van Stryland, D. R. Williams, and W. L. Wolfe, Handbook of Optics (McGraw-Hill, 1995), Vol. 2.
  7. F. P. Incropera and D. P. DeWitt, Fundamentals of Heat and Mass Transfer4th ed. (Wiley, 1996).

2010 (1)

2006 (1)

K. Kakinuma, Jpn. J. Appl. Phys. 45, 4330 (2006).
[CrossRef]

Bass, M.

M. Bass, E. W. Van Stryland, D. R. Williams, and W. L. Wolfe, Handbook of Optics (McGraw-Hill, 1995), Vol. 2.

DeWitt, D. P.

F. P. Incropera and D. P. DeWitt, Fundamentals of Heat and Mass Transfer4th ed. (Wiley, 1996).

Huang, H. T.

Huang, Y. P.

Hwang, S.

S. Hwang, H. Kim, C. Kim, and S. Lim, in SID Symposium Digest (2009), Vol. 40, pp. 1787–1789.

Incropera, F. P.

F. P. Incropera and D. P. DeWitt, Fundamentals of Heat and Mass Transfer4th ed. (Wiley, 1996).

Kakinuma, K.

K. Kakinuma, Jpn. J. Appl. Phys. 45, 4330 (2006).
[CrossRef]

Kim, C.

S. Hwang, H. Kim, C. Kim, and S. Lim, in SID Symposium Digest (2009), Vol. 40, pp. 1787–1789.

Kim, H.

S. Hwang, H. Kim, C. Kim, and S. Lim, in SID Symposium Digest (2009), Vol. 40, pp. 1787–1789.

Lim, S.

S. Hwang, H. Kim, C. Kim, and S. Lim, in SID Symposium Digest (2009), Vol. 40, pp. 1787–1789.

Tsai, C. C.

Tsai, Y. S.

Y. S. Tsai, “Backlight module,” U.S. patent 6,995,815(February 7, 2006).

Van Stryland, E. W.

M. Bass, E. W. Van Stryland, D. R. Williams, and W. L. Wolfe, Handbook of Optics (McGraw-Hill, 1995), Vol. 2.

Williams, D. R.

M. Bass, E. W. Van Stryland, D. R. Williams, and W. L. Wolfe, Handbook of Optics (McGraw-Hill, 1995), Vol. 2.

Wolfe, W. L.

M. Bass, E. W. Van Stryland, D. R. Williams, and W. L. Wolfe, Handbook of Optics (McGraw-Hill, 1995), Vol. 2.

J. Display Technol. (1)

Jpn. J. Appl. Phys. (1)

K. Kakinuma, Jpn. J. Appl. Phys. 45, 4330 (2006).
[CrossRef]

Other (5)

M. Bass, E. W. Van Stryland, D. R. Williams, and W. L. Wolfe, Handbook of Optics (McGraw-Hill, 1995), Vol. 2.

F. P. Incropera and D. P. DeWitt, Fundamentals of Heat and Mass Transfer4th ed. (Wiley, 1996).

http://www.kismart.com.tw/double_sided.html.

S. Hwang, H. Kim, C. Kim, and S. Lim, in SID Symposium Digest (2009), Vol. 40, pp. 1787–1789.

Y. S. Tsai, “Backlight module,” U.S. patent 6,995,815(February 7, 2006).

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Figures (4)

Fig. 1
Fig. 1

Dual-sided application constructed by (a) a conventional pair of single-sided displays applied back to back and (b) a UFL dual-sided display.

Fig. 2
Fig. 2

(a) Construction of angular-luminance distribution measurement. (b) and (c) show the ray tracing and luminous distribution of FL dual-sided illumination, and (d) and (e), of UFL illumination.

Fig. 3
Fig. 3

Luminous distribution of dual-sided illumination: (a) FL lighting, (b) UFL lighting; (c) UFL front view, (d) UFL back view.

Fig. 4
Fig. 4

Thermal distribution regarding (a) FL dual-sided BL, (b) UFL dual-sided BL.

Tables (2)

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Table 1 Comparison of Different Dual-Sided Displays

Tables Icon

Table 2 Comparison of Measured Temperature of Conventional Single-Sided Display with UFL Dual-Sided Display a

Equations (2)

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P RAD = σ ε ( A ) T 4 ,
Δ T = T max T min .

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