Abstract

We designed an edge-lighting light guide plate (LGP) based on a micro-prism structure for liquid crystal display. Its top and bottom surfaces have micro-prisms, and a layer of high reflection film is coated on the bottom surface. The principle of the LGP was analyzed. The optical simulation tool ASAP was used to calculate the apex angle and height of the micro-prism on the top of the LGP, the apex angle of the micro-prism on the bottom of the LGP and the emitting angle dependent luminous flux of the LGP. By adjusting the width of micro-prisms on the bottom, the LGP achieved uniform luminance. A 12-in LGP based on a micro-prism structure as an example was designed. The results proved that the LGP based on a micro-prism structure is thin and simple with uniform luminance and high efficiency.

© 2009 IEEE

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  1. S. T. Wu, D. K. Yang, Reflective Liquid Crystal Displays (Wiley, 2001).
  2. J. L. Chen, Y. L. Zhang, F. L. Li, C. Cai, "Design and simulation analysis of scattering netted dots on edge-lighting flat light guide plate," Chinese J. Liq. Crystals and Displays 21, 206-213 (2006).
  3. R. Lu, Q. Hong, Z. Ge, S. T. Wu, "Color shift reduction of a multi-domain IPS-LCD using RGB-LED backlight," Opt. Expr. 14, 6243-6252 (2006).
  4. T. Okumura, A. Tagaya, Y. Koike, "Highly efficient backlight for liquid crystal display having no optical films," Appl. Phys. Lett. 83, 2515-2517 (2003).
  5. T. Okumura, T. Ishikawa, A. Tagaya, Y. Koike, "Optical design of liquid crystal display backlighting with highly scattering optical transmission polymer," Appl. Opt. 5, S269-S275 (2003).
  6. A. Tagaya, M. Nagai, Y. Koike, K. Yokoyama, "Thin liquid crystal display backlight system with highly scattering optical transmission polymers," Appl. Opt. 40, 6274-6280 (2001).
  7. Q. Ye, Z. F. Tang, J. Zhang, C. Q. Ma, N. Zhang, "Ray tracing simulation of volume scattering light guide plate for LCD," Acta Opt. Sinica 26, 1627-1631 (2006).
  8. W. L. Qin, Q. Ye, Z. F. Tang, N. Zhang, "Simulation analysis of HSOT light guide plate," Chinese J. Liq. Crystals And Displays 22, 325-330 (2007).
  9. D. Feng, "High quality light guide plates that can control the illumination angle based on micro-prism structures," Appl. Phys. Letters 85, 6016-6018 (2004).
  10. Y. Li, H. B. Xie, "Structure design of prism film in LCD," Electron. Meas. Technol. 29, 144-145 (2006).

2007 (1)

W. L. Qin, Q. Ye, Z. F. Tang, N. Zhang, "Simulation analysis of HSOT light guide plate," Chinese J. Liq. Crystals And Displays 22, 325-330 (2007).

2006 (4)

Q. Ye, Z. F. Tang, J. Zhang, C. Q. Ma, N. Zhang, "Ray tracing simulation of volume scattering light guide plate for LCD," Acta Opt. Sinica 26, 1627-1631 (2006).

Y. Li, H. B. Xie, "Structure design of prism film in LCD," Electron. Meas. Technol. 29, 144-145 (2006).

J. L. Chen, Y. L. Zhang, F. L. Li, C. Cai, "Design and simulation analysis of scattering netted dots on edge-lighting flat light guide plate," Chinese J. Liq. Crystals and Displays 21, 206-213 (2006).

R. Lu, Q. Hong, Z. Ge, S. T. Wu, "Color shift reduction of a multi-domain IPS-LCD using RGB-LED backlight," Opt. Expr. 14, 6243-6252 (2006).

2004 (1)

D. Feng, "High quality light guide plates that can control the illumination angle based on micro-prism structures," Appl. Phys. Letters 85, 6016-6018 (2004).

2003 (2)

T. Okumura, A. Tagaya, Y. Koike, "Highly efficient backlight for liquid crystal display having no optical films," Appl. Phys. Lett. 83, 2515-2517 (2003).

T. Okumura, T. Ishikawa, A. Tagaya, Y. Koike, "Optical design of liquid crystal display backlighting with highly scattering optical transmission polymer," Appl. Opt. 5, S269-S275 (2003).

2001 (1)

Acta Opt. Sinica (1)

Q. Ye, Z. F. Tang, J. Zhang, C. Q. Ma, N. Zhang, "Ray tracing simulation of volume scattering light guide plate for LCD," Acta Opt. Sinica 26, 1627-1631 (2006).

Appl. Opt. (2)

T. Okumura, T. Ishikawa, A. Tagaya, Y. Koike, "Optical design of liquid crystal display backlighting with highly scattering optical transmission polymer," Appl. Opt. 5, S269-S275 (2003).

A. Tagaya, M. Nagai, Y. Koike, K. Yokoyama, "Thin liquid crystal display backlight system with highly scattering optical transmission polymers," Appl. Opt. 40, 6274-6280 (2001).

Appl. Phys. Lett. (1)

T. Okumura, A. Tagaya, Y. Koike, "Highly efficient backlight for liquid crystal display having no optical films," Appl. Phys. Lett. 83, 2515-2517 (2003).

Appl. Phys. Letters (1)

D. Feng, "High quality light guide plates that can control the illumination angle based on micro-prism structures," Appl. Phys. Letters 85, 6016-6018 (2004).

Chinese J. Liq. Crystals and Displays (1)

J. L. Chen, Y. L. Zhang, F. L. Li, C. Cai, "Design and simulation analysis of scattering netted dots on edge-lighting flat light guide plate," Chinese J. Liq. Crystals and Displays 21, 206-213 (2006).

W. L. Qin, Q. Ye, Z. F. Tang, N. Zhang, "Simulation analysis of HSOT light guide plate," Chinese J. Liq. Crystals And Displays 22, 325-330 (2007).

Electron. Meas. Technol. (1)

Y. Li, H. B. Xie, "Structure design of prism film in LCD," Electron. Meas. Technol. 29, 144-145 (2006).

Opt. Expr. (1)

R. Lu, Q. Hong, Z. Ge, S. T. Wu, "Color shift reduction of a multi-domain IPS-LCD using RGB-LED backlight," Opt. Expr. 14, 6243-6252 (2006).

Other (1)

S. T. Wu, D. K. Yang, Reflective Liquid Crystal Displays (Wiley, 2001).

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