LCD And OLED: Two Changing Faces Of Television

LCD And OLED: Two Changing Faces Of Television

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New technology is not good or evil in and of itself. It’s all about how people choose to use it.

                                        David Wong

Sumera B Reshi

Few inventions have had as much effect on our society as television and once upon a time television was synonymous with magic and the only difference is that magic creates events by using mysterious or supernatural forces while as a television uses powerful technology to enchant its audiences. Arthur C. Clarke, a great science fiction writer, once said that ‘Any sufficiently advanced technology is indistinguishable from magic.’

Unquestionably early viewers of television were amazed by the magic of live sound and moving images beamed through the air into a box in their living rooms. And when you stop and think about it, today’s mega flat-screen, high-definition Smart TVs seem pretty magical as well. With age, the magic of television has developed beyond our comprehension.

We are in a new age, so gone are the days of heavy television boxes. Like other technologies, TV has come a long way. It has also metamorphosed into some which appear real and genuine. There was a time when we used to have a black & white television in our drawing rooms. Then it also went through a number of modifications.

After B/W, we all enjoyed color telly (televisions). The trend and this age of telly were welcome by all. As 90’s paced towards more technological innovations, color telly was replaced by LCDs – Liquid Crystal Display is displayed that use liquid crystals sandwiched between two sheets of polarizing material. The images are displayed when an electrical charge is applied to the crystals.

The world of television went through further reforms. Thus, came the era of OLED – Organic light –emitting diode TVs. This is a type of LED – the light –emitting diode TVs where a layer of organic materials is placed between two electrodes on the substrate. OLED is slimmer than LCDs. Moreover, OLED consumes less power and has a high screen refresh rate compared to LCDs. However, the lifespan of an OLED is less compared to LCD. LCD is less glare while as OLEDs are more glare and lack readability in sunlight.

In LCD TVs, panels weigh less than plasma and use less energy. It is light, thinner and emits less electromagnetic radiation. There is no bleeding or smearing in LCDs. On the other hand, OLED TVs are thinner, lighter and flexible. Its substrates are plastic, compared to glass, consumes less power and easier for larger sizes. There is no ghosting and smearing in OLED TVs.

Besides, all the goodies in LCD and OLED TVs, there are, however, few limitations as well. LCDs have slower refresh rate and limited viewing angle. The blacks are brighter and susceptible to burn-out and image persistence due to this, dead or stuck pixels may appear. Also in LCDs, there is a possibility of smearing or ghosting and a loss of contrast in higher temperature. Further, LCDs have a poor display in sunlight.  While as OLED TVs have a shorter lifetime and have expensive manufacturing process. They are easily damaged by water and have certain issues in color balance.

The LCD TVs emit 3.1 times more blue light than OLED as per  Choi Dong-won, senior vice president of LG Display at the IMID Display Business Forum held at Ilsan Kintex. While as OLED TV emits 1/3 of blue light than LCD TV, measured under the general household environment.

Technology is good but not at the cost of our health. Next time you dream to decorate your TV lounge with LCD or OLED, think twice as it could make your heart happy but it can harm your eyes.

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