|Samsung Develops 1.72'' Super-reflective LCD Screen|
Posted: 26-Jan-2006 [Source: Samsung]
[Samsung announces new 1.72" SR LCD screen for cell phones that can be read easily outdoors even in bright sunshine.]
Seoul -- Samsung Electronics Co., Ltd., the world's largest provider of thin-film transistor, liquid crystal display (TFT-LCD) panels, announced that it has developed a 1.72-inch super-reflective (SR) LCD screen that can be read easily outdoors even when the sun is shining brightly. The reflectance rate for the new transflective SR LCD technology is three times that of the usual qqVGA-resolution (128x160 pixels) mobile displays available today
Samsung Electronics has applied silver with high reflectance instead of aluminum to achieve the breakthrough. At the same time, the company developed a new reflective lens that greatly improves the rate at which light is concentrated into pixels. In addition, light entering the 1.72" LCD can be fully harnessed due to improved transmittance capabilities of the polarizer and color filter.
Moreover, to prevent any increase in power consumption, Samsung chose to combine the super-reflectance technology with transflective (illuminated the screen from front and back) rather than transmissive (illuminated from behind the screen) panel technology. The transflective mode makes more effective use of natural outside lighting than the transmissive mode, while the transmissive mode instead would have increased power consumption by requiring a brightness of at least 300nit to sufficiently improve outdoor visibility.
The super-reflective 1.72" LCD has a brightness of 100nit, a contrast ratio of 220:1/30:1 (transmission/reflection) and 50 percent color saturation.
Samsung Electronics plans to apply its new SR technology to all its high-resolution transflective displays in phases.
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