P-82: New Design for a Highly Collimating Turning Film

Ishikawa, Tomohiro; Mi, Xiang‐Dong

doi:10.1889/1.2433549

Cited by 12 publications

(10 citation statements)

References 1 publication

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“…In spite that LEDs are widely used as the light source for backlight in LCDs, the conventional LED of Lambertian angular distribution is not suitable for narrow viewing angle backlight design with eco-display [7][8][9]. Thus, the collimated point light source becomes a good candidate for the direction-dependent-displays.…”

Section: Design Principlementioning

confidence: 99%

Switchable viewing angle display with a compact directional backlight and striped diffuser

Wang

Chao

et al. 2015

Opt. Express

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A compact high-directionality backlight module combined with a striped diffuser is proposed to achieve an adjustable viewing angle for eco-display. The micro-prisms on the compact light guide plate guide the emitting rays to the normal viewing angle, whereas a set of striped diffusers scatter the rays to a wide viewing angle. View cones of ± 10° / ± 55° were obtained for narrow/wide viewing modes with 88% / 85% uniformity of spatial luminance, respectively. Compared with the conventional backlight, the optical efficiencies were increased by factors of 1.47 and 1.38 in narrow and wide viewing modes, respectively. In addition, only 5% of power consumption was needed when the backlight worked in private narrow viewing mode to maintain the same luminance as that of a conventional backlight.

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Section: Design Principlementioning

confidence: 99%

Switchable viewing angle display with a compact directional backlight and striped diffuser

Wang

Chao

et al. 2015

Opt. Express

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“…It is clearly indicated that the conventional LED with Lambertian angular distribution is not suitable for collimated backlight design [5][6][7]. Therefore, we designed a collimated light source including an LED chip and a parabolic reflector immerged in a high index material, as shown in Figure 2.…”

Section: Collimated Light Sourcementioning

confidence: 99%

“…Recent years, IBM used multi-index material to control the light angular distribution of entering the microstructures [1][2][3][4]. Kodak used a dual-turning film to collimate the light [5]. K.K designed a monolithic block-wise functional light guide and combined with an inverted prism to get the collimated backlight [6][7].…”

Section: Introductionmentioning

confidence: 99%

P‐65: A Novel Highly CoNimating Backlight Module Using a Double Wedge‐Shaped Light Guide Plate

Wang

Lü²,

Shieh

2012

Symp Digest of Tech Papers

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“…Many improved turning films [1,2,3] have been proposed to enhance light utilization efficiency and luminance. One example [1] is shown in Figure 2A.…”

Section: Figure 1 a Conventional Turning Filmmentioning

confidence: 99%