Classification of LED backlight technology and its advantages and disadvantages

Currently used LED backlight technology in the field of LCD TV has three main types: direct type RGB RGB-led light source, white LED light source and straight side type type white LED light source. Direct RGB-LED light source technology in the comprehensive display of the absolute advantage of the first, but the price is the highest cost, not the possibility of market penetration. Currently on the market for the sale of LED TV is generally a straight down white LED light source and side into the white LED light source products. Samsung, SONY is used in the side of the white LED technology, while SHARP, Hisense is using a straight down white LED technology.

Direct type: emphasizing superior quality performance

Direct enterprise type LED technology, direct LED technology advantage in the regulation of the excellent picture on the side of embedded LED technology, and edge LED TV prices. Compared to the two ways, 'straight down' on the performance of the picture more perfect. "55 inch LED TV, for example, the straight down products will be evenly distributed in the back of the LED lights in the back of the panel, so that the backlight can be evenly transmitted to the entire screen, the screen details more vivid and realistic. Side by side is installed in the panel at the edge of the more than and 400 LED lights, so that light from the side of the light. Although this can minimize the thickness, but due to the reduction of nearly 7 times the number of LED lights, it is easy to make the screen brightness in the form of "X" (that is, four weeks than the central position to light).

In addition, with a direct type LED backlight LED TV also is divided into a number of cells in the display black, directly off of the corresponding LED region of the light, you can show a very nice black. Therefore, the use of straight down LED technology companies think straight down LED backlight can be more accurately rendered images, and show excellent color and light and shade contrast effect.

Side entering type: emphasis on ultra-thin energy-saving lead

"Compared to the straight type backlight technology, side type backlight technology on the overall system design and integration capabilities require higher. In addition, from the cost point of view, the side entering type white LED technology to consider (the host power supply, power supply circuit, screen and heat dissipation) need to thin, often resulting in many aspects of the cost increase, so the cost is higher than the direct type white LED products. Samsung TV technicians for the price of such an explanation.

Become more slim volume of edge LED TV's biggest bright spot. According to the reporter, the current market into the side of the thinnest LED TV product thickness is only 2.99cm, while the straight down LED the thinnest product thickness of 5.5cm.

"Frivolous" what is important? The home appliance industry experts said, consumers care more about electronic products "frivolous" characteristics, because this is obviously to enhance the quality of products, is a brand and corporate R & D capability and manufacturing technology eventually intuitively reflect the appearance of the products, every inch of the decrease of mean improvement in technology. In addition, the side of the LED TV is relatively more energy-efficient. To 52 inches LED TV, for example, the side into the LED boot power consumption is only 186.5W, while the direct LED power consumption up to 304W.

Overall difference

Is direct type, or a side entrance, seems to be a solution to the problem.

A LED test National Radio and television product quality supervision and inspection center, gives an interesting answer. "We are in the same brand of LED TV side and direct type LED TV's brightness and color parameters were tested and compared comprehensively, the results show that the direct type and edge LED TV show, in the picture color brightness uniformity and contrast the three parameter index level is slightly different overall, but little difference. National Radio and television product quality supervision and inspection center of the testing room, said dr..

For the development of LED backlight technology, the industry believes that the "go15", after all, consumers just contact "LED" the new vocabulary, also did not understand its true meaning and advantage. Since the second half of this year, many manufacturers have launched their own brand of LED tv. LED is the future direction of development, LED will have a bright future, and as a consumer, calm treatment of all kinds of comments, do not follow the trend, spotted the start, to understand some of the more thorough purchase will not suffer. "

Merits two technology brief comparison

Advantages deficiency

Direct type quality performance more perfect hard thin thickness

Lateral thin thickness, such screen brightness showed "X" shape cut