Rollable display

A rollable display is a flexible display that can be rolled up into a scroll. Technologies involved in building a rollable display include electronic ink, Gyricon, and OLED.

Electronic paper displays which can be rolled up have been developed by E Ink. At the CES 2006, Philips showed a rollable display prototype, with a screen capable of retaining an image for several months without electricity. As of 2007 Philips Polymer Vision expected to launch a 5-inch, 320 x 240-pixel rollable display based on E Ink’s electrophoretic technology.

Some flexible organic light-emitting diode displays have been demonstrated. The first commercially sold flexible display was an electronic paper wristwatch.

A rollable display is an important part of the development of the roll-away computer.

Advantages

Rollable displays have many advantages over glass: better durability, lighter weight, thinner dimensions, and can be perfectly curved and used in many devices. Moreover, the major difference between glass and rollable display is that the display area of a rollable display can be bigger than the device itself; If a flexible device measuring, for example, 5 inches in diagonal and a roll of 7.5mm, it can be stored in a device smaller than the screen itself and close to 15mm in thickness. Another example of the benefits of being able to roll up your T.V are being able to easily transport your T.V to places you would never normally of expected to take a T.V, i.e to a friends house, or even to work.

Screen

Screen or Screens may refer to:

Arts

Filtration / selection processes

Media and music

Screen (magazine)

Screen is a leading weekly film magazine, published in India. Established in 1951, it is owned by The Indian Express publishing group. The content focuses on India's Hindi film industry, a.k.a. Bollywood, located mainly in Mumbai. It also has an e-magazine version.

History

Screen was first published on 26 September 1951 with Manorama Katju as its managing editor. She was succeeded in 1959 by S.S. Pillai who died in office in 1977. The magazines was started by the Indian Express newspaper group.

B. K. Karanjia who was previously editor of Filmfare, stayed Screen editor for 10 years.Udaya Tara Nayar, rose the ranks within Screen Magazine and became the editor between 1988-1996 and 1998-2000. Veteran film journalist, Bhawana Somaaya was the editor of the magazine (2000-2007). In 2007 she was replaced by Ex- Society Magazine and HT Style/Saturday editor Priyanka Sinha Jha who remains the editor till date.

Screen Awards

Screen organizes and sponsors the Screen Awards for movies in Hindi cinema, established in 1995. It also sponsors Screen Gold Medal for excellence in direction at the Film and Television Institute, established in 1967.

Blend modes

Blend modes (or Mixing modes) in digital image editing are used to determine how two layers are blended into each other. The default blend mode in most applications is simply to hide the lower layer with whatever is present in the top layer. However, as each pixel has a numerical representation, a large number of ways to blend two layers is possible. Note that the top layer is not necessarily called a "layer" in the application. It may be applied with a painting or editing tool.

Most graphics editing programs, like Adobe Photoshop and GIMP, allow the user to modify the basic blend modes - for example by applying different levels of opacity to the top picture.

Normal blend mode

This is the standard blend mode which uses the top layer alone, without mixing its colors with the layer beneath it.

Where a is the value of a color channel in the underlying layer, and b is that of the corresponding channel of the upper layer. The result is most typically merged into the bottom layer using "simple" (b over a) alpha compositing, but other Porter-Duff operations are possible. The compositing step results in the top layer's shape, as defined by its alpha channel, appearing over the bottom layer.