OLED Television Technology Explained (almost)

We hired a writer to explain the nitty gritty behind OLED televisions and this is what he came up with. It’s not the easiest read…

Here’s a photo of a nice girl near an OLED TV:

OLED, i.e. Organic Light Emitting Diode, better known as LEP, i.e. Light Emitting Polymer and OEL, i.e. Organic Electro Luminescence can be referred to as any of the LEDs, i.e. Light Emitting Diodes whose ‘emissive electroluminescent’ layer comprises of film made up of various organic compounds. This layer generally goes on to contain a polymer which permits best-suited organic compounds for getting deposited. They’re deposited in columns and rows on to one of the flat carriers by simple process of printing. The matrix resulting out of all this consists of pixels which are capable of emitting light comprising of diverse colours.

UDC is amongst the companies pioneering in manufacturing techniques and development of OLED for big boys like Sony, Samsung, LG, and, last, but not least, the US Department of Defence. There is no mention of ways of making these displays, or panels which would go on with making up the next generation pertaining to super-slim High Definition Televisions until now.

As per observation by experts, fabrication of OLED panels can be referred to as being one of the processes which involve costly super-heated dope as well as a thing known as ‘shadow mask’. OLEDS are quite different in comparison with LCDs. This difference can be made out from the fact that the former ones don’t require any backlight. This can be attributed to the fact that every pixel consists of phosphorescent particle which moves further with lighting up by itself on excitement.

The trick lies in having the particles gotten on to glass, metallic, or plastic screen. These screens are called substrates in the elderly fashion. There are several techniques. However, basic process gets followed almost everywhere.

Firstly, ‘dope’ or ‘phosphorescent coloured particles’ are prepared. 3 colours, i.e. blue, green, and red are, in actual sense, made up of powders which are orange, yellow, and red. None of the experts can explain the reason behind such a composition. This powder is then carried to fabrication room in ‘vials’.

Meanwhile, in the gallery under ultra violet protective tinted glass, substrate gets prepared for being fused with particles. Intel has loads of such galleries, i.e. ‘Class 10’ clean rooms. The magic actually starts here. Dope goes on to meet substrate in the sticky act (of love). These days, as far as huge businesses concerned with OLEDS are concerned, there are 4 ways of making this happen.

Vacuum Thermal evaporation

This is a true and tried technique of UDC. It can be referred to as a steamy and hot method which involves super-heated dope which goes on to evaporate up in to grid, called shadow mask, that’s placed over substrate. The evaporation takes place in this order: red, green, and blue. The end result is then obtained. RGB pixels get evenly distributed all through the thing.

Organic Vapour Phase Deposition

Here, vapour gets heated up. Thereafter, it is streamed in to system of ‘showerheads’ which go on to deposit particles on cooled substrate.

The other two ways of creating the magic are Ink-Jet printing and organic vapour jet printing. The latter one is, by all means, harder one.