AMOLED Display

Sometimes you heard from your friends or anywhere that my mobile has AMOLED display. So what is there in AMOLED display?? Here is introduction about AMOLED display...

AMOLED stands for Active Matrix Organic Light Emitting Diode. In this the display actually emits colors directly from organic diodes rather than needing polarizing filters, crystals or backlights as for LCDs. 

AMOLED is an OLED based technology used for manufacturing display which is known for its contrast that is unrivaled by the displays based on LCD technology. 

The biggest problem of the AMOLED display is that it is poor under the direct sunlight.

At this time Samsung is featuring this display in their smartphones. As you can see in the above image Samsung galaxy s 2 has super AMOLED display. Samsung has introduced many types of AMOLED display. They are listed below:

• Super AMOLED - used in samsung
• Super AMOLED plus - used in samsung
• Super AMOLED Advance
• HD super AMOLED
• Clear AMOLED plus- used by Nokia

AMOLED display provide higher refresh rates than the other displays like LED, LCD. So touch becomes smoother and user can get full advantage of it. Power consumption is critical to battery life.

High Definition Television

      High-definition television (HDTV) is a digital television broadcasting system with greater resolution than traditional television systems (NTSC, SECAM, PAL). High-definition television (HDTV) provides a resolution that is substantially higher than that of standard-definition television.

     HDTV is digitally broadcast because digital television (DTV) requires less bandwidth if sufficient video compression is used. HDTV uses 16:9 widescreen as is its aspect ratio so widescreen pictures are transmitted properly and not letter boxed or panned.

     There are three key differences between HDTV and what's become known as standard definition TV ie regular NTSC, PAL or SECAM. The three differences are; an increase in picture resolution, 16:9 widescreen as standard, and the ability to support multi-channel audio such as Dolby Digital.

     Standard definition NTSC broadcasts have 525 horizontal lines, and PAL broadcasts are slightly better at 625 lines. In both these systems however, the actual number of lines used to display the picture, known as the active lines, is fewer than that. In addition, both PAL and NTSC systems are interlaced, that is, each frame is split into two fields, one field is the odd-numbered lines and the other is the even lines. Each frame is displayed alternately and our brain puts them together to create a complete image of each frame. This has an adverse affect on picture quality.