| json_metadata | "{"app":"musing/1.1","appTags":["technology","mobile","screen"],"appCategory":"technology","appTitle":"Which is the best technology for mobile phone screen-LED, OLED OR AMOLED?","appBody":"<p><strong>LED (Light Emitting Diode)</strong></p>\n<p>An LED screen is actually a conventional LCD that uses small LEDs for the backlight: the LCD screen contains liquid crystals that do not produce light themselves but are illuminated by these LEDs. The lighting may be around the screen (Edge LED) or in areas at the back (Direct LED). LED LCDs replace older models (CCFL-LCD) that still use some kind of TL mini-tube for the backlight.</p>\n<p>LEDs still remain today the most common screen technology for TVs and monitors, but in recent years they have been heavily competing with OLEDs.</p>\n<p><strong>OLED (Organic Light Emitting Diode)</strong></p>\n<p>Unlike the principle of LED screens, each pixel of an OLED screen itself emits light: such a screen consists of organic materials that individually produce light under the impulse of a voltage. The backlight is therefore useless. The main advantages over LEDs: better contrast, wider viewing angle, better responsiveness and a wider color gamut.</p>\n<p>In addition, OLED displays can be made even thinner than LED displays. But the high price, the lower brightness compared to LEDs and the shorter life due to a technique not yet developed at 100% (pixels remain for example subject to wear) are major drawbacks.</p>\n<p><strong>AMOLED</strong></p>\n<p>AMOLED is the most common type of OLED. We are talking about OLED for TVs and computer monitors, while the term AMOLED is used for smartphones. In practice, the meaning is almost identical: \"AM\" means \"active matrix\", the pixels of an OLED screen forming a grid where each pixel is driven separately by the electric current and produces itself (\"actively\") from the light. And this, unlike PMOLED (\"passive matrix\") where a whole line of pixels emits light simultaneously. TVs, monitors and smartphones do not work with PMOLEDs.</p>\n<p><br></p>\n<p>You will still most often encounter LED displays in the stores, but the future seems to be all for (AM) OLED, which outperforms them in terms of image quality.</p>","appDepth":2,"appParentPermlink":"fktxxqejw","appParentAuthor":"akdx","musingAppId":"aU2p3C3a8N","musingAppVersion":"1.1","musingPostType":"answer"}" |
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