OLED displays are electronic visual displays based upon organic light-emitting diode (OLED) technology. Like other display types, an OLED Display can be used to present images, text and video a viewer. You can find more information in our OLED displays guide.
What is an OLED?
An OLED is an organic light-emitting diode, that when current is applied emits light. An individual OLED is made up of an organic semiconductor, sandwiched between two electrodes. These electrodes is typically transparent, allowing the emitted light to escape.
How does an OLED Display work?
An OLED display is made up of an array of individual OLEDs that are individually turned on and off in a coordinated way (driven) to present an image. There are two main methods of driving an OLED display:
PMOLED (passive matrix OLED) – Each row and line of pixels in the display are controlled sequentially, one at a time.
AMOLED (active matrix OLED) – A thin-film transistor backplane is used to switch each pixel on and off, with each pixel containing a storage capacitor to maintain the on pixel state.
High contrast ratio – OLEDs emit light directly, so when a black pixel is required, the pixel is off and emits no light at all. LCDs cannot achieve lower contrast ratios as black is achieved by masking a backlight, some light always get through
Wide viewing angle – Because OLEDs emit light directly and not through a liquid crystal layer like in a LCD
Response time – Current OLEDs can reach response times as low as 1 ms
Lifespan – The organic materials used in the OLEDs have a limited lifespan compared to LCD displays
Outdoor performance – OLED Displays utilise an emissive technology, meaning all the light used to make up an image is produced by the display. As the constituent OLEDs can act like a mirror, in high ambient light condition the image can be difficult to view.
Power consumption – An OLED display will generally consume more power that an LCD display, unless the image is primarily black
PMOLED - Are typically used in small, graphical displays, where their benefits of a simple control scheme and low cost outweigh the disadvantages of restricted resolution and shorter lifespan.
AMOLED - Are typically used in applications that require higher resolutions and are large in size.
OLED ni kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo cha kioo. Kama aina nyingine za kuonyesha, OLED Display inaweza kutumika kuwasilisha picha, maandishi na video kwa mtazamaji. Unaweza kupata maelezo zaidi katika mwongozo wetu wa OLED. OLED ni nini? OLED ni diode ya kiumbe inayotoa mwanga, ambayo wakati wa sasa hutumiwa hutoa mwanga. OLED ni moja ya vifaa vya kipekee vya kuunganisha semiconductor, ambayo imewekwa kati ya elektroni mbili. Kwa kawaida elektroni hizo ni zenye uwazi, na hivyo kuruhusu nuru inayotokezwa itoke. Jinsi OLED Display Inavyofanya Kazi OLED ni safu ya OLEDs moja kwa moja ambayo ni moja kwa moja kugeuka juu na mbali katika njia ya kuratibu (kuendeshwa) kwa kuwasilisha picha. Kuna njia mbili kuu za kuendesha OLED: PMOLED (Matrix Passive OLED) - Kila safu na mstari wa pixel kwenye kuonyesha ni kudhibitiwa mfululizo, moja kwa wakati. AMOLED (active matrix OLED) - transistor backplane ya filamu nyembamba hutumiwa kubadili kila pixel juu na nje, na kila pixel yenye capacitor ya kuhifadhi kudumisha hali ya pixel juu. OLEDs huchapisha mwanga moja kwa moja, kwa hivyo wakati pixel nyeusi inahitajika, pixel imezimwa na haitoi mwanga kabisa. LCDs haziwezi kufikia uwiano wa tofauti ya chini kama nyeusi hupatikana kwa kuficha backlight, baadhi ya mwanga daima hupita kwa njia ya pembe pana ya kutazama, kwa sababu OLEDs hutoa mwanga moja kwa moja na sio kupitia safu ya kioo cha kioevu kama katika LCD, wakati wa majibu, OLEDs ya sasa inaweza kufikia nyakati za majibu chini ya 1 ms, maisha ya vifaa vya kikaboni, na maisha ya muda mdogo ikilinganishwa na maonyesho ya LCD. OLEDs inaweza kutenda kama kioo, katika hali ya mwanga wa mazingira, picha inaweza kuwa ngumu kuona. OLED screen kwa ujumla hutumia nguvu zaidi kuliko LCD, isipokuwa picha ni nyeusi PMOLED - Kwa kawaida hutumiwa katika maonyesho madogo ya picha, ambapo faida zao za mpango rahisi wa kudhibiti na gharama ya chini hupita hasara za azimio la kizuizi na maisha mafupi. AMOLED - Ni kawaida kutumika katika maombi ambayo zinahitaji azimio ya juu na ni kubwa katika ukubwa.