ARE OLED DIS­PLAYS FI­NALLY READY FOR PRIME TIME?

If what we have seen at CES 2016 is any in­di­ca­tion, be pre­pared to see OLED dis­plays com­ing soon to more devices near you.

HWM (Malaysia) - - THINK - Ken­nyYeo

by OLED or or­ganic light-emit­ting diode dis­plays are not new. The first phones to use ac­tive-matrix OLED dis­plays ap­peared as early as 2008, while the first com­mer­cially avail­able OLED tele­vi­sions made their way to store shelves about three years ago. How do OLED dis­plays work? OLED dis­plays work by pass­ing an elec­tric cur­rent through a thin film of or­ganic ma­te­rial to cre­ate red, blue and green lights - the ba­sic col­ors needed to cre­ate a TV im­age. On the other hand, LCDs have pix­els that are switched on or off us­ing liq­uid crys­tals to ro­tate po­lar­ized light; while the now aban­doned plasma tech­nol­ogy ig­nites pock­ets of gas to ex­cite phos­phors.

This method of cre­at­ing im­ages gives OLED dis­plays nu­mer­ous ad­van­tages over tra­di­tional LCD dis­plays. Since OLED dis­plays do not rely on back­lights, they can show true, ab­so­lute blacks; con­se­quently, bright­ness uni­for­mity across the en­tire dis­play is also less of an is­sue.

OLED dis­plays also en­joy wider view­ing an­gles, higher re­fresh rates, con­trast ra­tios and have a wider color gamut, which ex­plains why im­ages on OLED dis­plays look so vivid

38

HWM

| MARCH 2016 and pho­to­re­al­is­tic. The ic­ing on the cake is that be­cause there’s no need for back­lights, OLED tele­vi­sions can be built thin­ner than LCD tele­vi­sions. The thinnest OLED tele­vi­sions are now thin­ner than smart­phones. Why hasn’t the su­pe­rior OLED dis­play be­come main­stream al­ready? With so many sig­nif­i­cant ad­van­tages over LCD dis­plays, why then hasn’t OLEDs be­come the main­stream dis­play?

Like any other new tech­nol­ogy, there’re teething is­sues that need to be ad­dressed. For a time, the lim­ited life­span of the or­ganic ma­te­ri­als used to cre­ate OLED dis­plays was the big­gest prob­lem.

Early OLEDs would lose their bright­ness af­ter just 1,000 hours and would only achieve half their orig­i­nal bright­ness af­ter 14,000 hours. This com­pares poorly to LCD dis­plays, which would typ­i­cally lose half their orig­i­nal bright­ness only af­ter 25,000 to 40,000 hours of use. OLED dis­plays are also prone to burn-in im­ages. Like plasma dis­plays, OLEDs can re­tain im­ages tem­po­rar­ily or even per­ma­nently if left static for too long. OLED dis­plays might fi­nally be ready for prime­time For­tu­nately, th­ese is­sues have largely been solved. Ac­cord­ing to LG, the big­gest pro­po­nent of OLED dis­plays, its OLED dis­plays now have a life­span of around 30,000 hours be­fore bright­ness de­te­ri­o­rates – that equals to 10 years of watch­ing tele­vi­sion for eight hours a day. Ad­di­tion­ally, OLED tele­vi­sion man­u­fac­tur­ers have also im­ple­mented var­i­ous anti burn-in fea­tures into their OLED tele­vi­sions to pre­vent burn-in im­ages from oc­cur­ring.

In fact, thanks to ad­vances in OLED tech­nol­ogy, OLED dis­plays might fi­nally be ready for prime­time. At CES 2016 we saw, for the first time, OLED dis­plays be­ing used in note­books and com­puter mon­i­tors. Len­ovo is of­fer­ing op­tional OLED dis­plays on its new

Newspapers in English

Newspapers from Malaysia

© PressReader. All rights reserved.