What Is LED TV?
A flat panel LCD TV set that uses LEDs (light emitting diodes) for its backlight source rather than the earlier cold cathode fluorescent lamps (see CCFL). Smaller, more power efficient and having a greater optical range than the fluorescents, LED TVs produce deeper blacks and more saturated color. In 2005, Sony offered the first LED TV.
Although an LED TV is really an LCD TV with LED backlighting, the industry branded them as LED TVs to avoid monikers such as “LED backlit TV” or “LED-based LCD TV.” Today, most TV sets are LED TVs.
Edge-lit LED TVs beam light to the back of the screen from the sides and allow for ultra-thin cases. Although some designs provide selective dimming, they are not as effective as the full array. In addition, they have a tendency to be brighter at the edges than at the center.
The full array covers the entire back of the screen with LEDs. Although the case is thicker than edge-lit designs, the full array provides better details in shadows and more contrast than the other methods. See ULED, LED, OLED, LCD, flat panel TV and Dolby HDR.
How Does An LED TV Work?
The way an LED TV works is, again, via a backlight, which is partially composed of two layers of polarizing material with a liquid crystal solution between them.
When an electric current passes through the liquid solution, it causes the crystals to align so that light is transmitted. Ultimately, this is how the image you see is composed on the screen. This technology can be likened to a window shutter, which allows light to pass through or be blocked out.
There are three main configurations of LED backlights:
- Full-Array – LEDs are distributed evenly behind the entire screen to produce a more uniform backlight and more effective local dimming (i.e., dimming and turning off entire LED zones). This method is typically found on higher-end models, but as of 2020, some mid-range models offer it, too.
- Edge-Lit – LEDs are placed at the edges of the screen, and depending on the display, they can be arranged all around the screen, on the left and right sides only, or at the top and bottom only. As such, this configuration allows the screen to be very thin, but it can cause some spots on the screen to be brighter than others for a less uniform picture.
- Direct-Lit – LEDs are positioned directly behind the screen like in full-array configurations; however, there are fewer LEDs in direct-lit configurations, and they can’t be controlled separately to generate optimal brightness. Direct-lit LED TVs aren’t as thin as other LED TVs and are typically a lower- to mid-end purchase.
Is A LED TV a Good TV?
The picture quality of an LED display is far better than an LCD. Due to modular light-emitting diodes, an LED screen produces better control over the contrast, rendering a clear picture. Also, LED provides RGB contrast, which can show truer blacks and truer whites.
How Long Will LED TV Last?
The industry standard for LED lifespan is 100,000 hours, or about 10 years, and most people assume that’s how long their display will last. But it’s not quite that simple.
LED TV Prices In Ghana:
BLUTEK BK3200TN HD SATELLITE LED 32″ TV
GH₵ 1,099.00
SAMSUNG UA32N5000 SATELLITE LED 32″ TV
GH₵ 1,749.00
LG LED 32 INCH LM550B SERIES HD LED TV – BLACK
GH₵ 1,949.00
BLUTEK BK4300TN FHD SATELLITE LED 43″ TV – BLACK
GH₵ 2,399.00
SAMSUNG 40″ UA40N5000 LED SATELLITE TV
GH₵3,769.00
NASCO 50″ LED FHD DIGITAL SATELLITE TV
GH₵ 4,099.00
SAMSUNG 55″ LED CRYSTAL UHD SMART 4K – UA55BU8000
GH₵ 6,099.00