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21 Oct 2014


LG Display has an excellent article on how they build TFT LCD displays:

Ever wondered how the TV and monitor displays you use every day work? The TFT-LCD manufacturing process consists of a set of processes for producing TFT, color filtering, cell, module and others. LG Display Newsroom gives a detailed, but easy to follow explanation of the entire steps below.

Let’s take a closer look at the production process for a TFT board, the bottom-most layer of an LCD panel. The image above depicts a TFT board, which consists of rows of small rectangular sections that together resembles a chessboard. Each rectangular section is a pixel, and each pixel contains a transistor that controls its function. The TFT process is the process that builds these transistors on top of a glass substrate.


TFT-LCD Production Process Explained - [Link]

2 Nov 2011

A New Angle on Cheap LCDs – [Link]

When viewing LCD monitors from an oblique angle, it is not uncommon to witness a dramatic color shift. Occasionally, this can appear as a total color inversion. This is primarily caused by a polarization asymmetry, where light rays passing through the pixel matrix at oblique angles are influenced by the relative orientation of the liquid crystal (see paper for more details).

Engineers and designers have sought to reduce these effects for more than two decades. This effort has been further driven by the popularity of LCD televisions, which have viewers located at wider angles than seen in typical computing setups. This has led to the emergence of more advanced LCD technologies, such as In-Plane Switching (IPS) and Vertical Alignment (VA) screens, which have superior field of view. However, this benefit comes with a higher price tag, slower refresh rate, and increased power consumption.

We take an opposite stance, embracing these optical peculiarities, and consider how they can be used in productive ways. Our paper discusses how a special palette of colors can yield visual elements that are invisible when viewed straight-on, but visible at oblique angles. In essence, this allows conventional, unmodified LCD screens to output two images simultaneously – a feature normally only available in far more complex setups. We enumerate several applications that could take advantage of this ability.

A New Angle on Cheap LCDs - [Link]

6 Sep 2011

PING! Augmented Pixel by Niklas Roy @royrobotiks – “How to make one!” #tutorials | CreativeApplications.Net. – [via]

In the decade where videogames were born, everything virtual looked like rectangular blocks. From today’s perspective, the representation of a tennis court in the earliest videogames is hard to distinguish from a soccer or a basketball field.

‘PING! – Augmented Pixel’ is a seventies style videogame, that adds a layer of digital information and oldschool aesthetics to a video signal: A classic rectangular video game ball moves across a video image. Whenever the ball hits something dark, it bounces off. The game itself has no rules and no goal. Like GTA, it provides a free environment in which anything is possible. And like Sony’s Eyetoy, it uses a video camera as game controller.

PING ! Augmented Pixel - [Link]





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