Interestingly, LED (LCD) manufacturers, represented by Samsung and Sony, have used new technologies to enhance the performance of LCD screens in recent years, including quantum dots, HDR, and so on. In fact, after supporting HDR, the picture quality of LED and OLED TVs has begun to shrink.
Recently, 2016 Value Electronics TV Shootout was held (the Most Valuable TV Competition, which began in 1998 in an A/V product contest in New York City, USA). The video competition unit includes the top four consumer flat panel TVs in the market, including the LG OLED65G6P. Samsung UN78KS9800, Sony XBR-75X940D and Vizio Reference series. After a professional-level competition, it was discovered that although the overall picture quality of OLED TVs still occupies an absolute advantage, HDR LED TVs are slowly catching up.
Test process
In order to more objectively test the display effect of the four TVs, the organizer also requested a classical plasma TV, the pioneer Kuro KRP-500M, as a reference. The test was conducted in a professional TV test laboratory. The test items included black level, subjective viewing sensation, color accuracy, dynamic effect (sharpness), off-axis performance, screen uniformity, HDR performance, bright environment performance, low light environment. In nine areas of performance, the test includes a series of professional images, such as the color bar mode, black and white chessboard, and so on. In the end, the judges divided the scores and scored the highest average score to measure the performance of each TV.
From left to right, Pioneer Kuro KRP-500M, LG OLED65G6P, Samsung UN78KS9800, Sony XBR-75X940D, Vizio RS65-B2. In addition to the LG OLED65G6P, the four TVs are OLED panels. The other three are all LED, all with 4K resolution, 120Hz panel, HDR 10 support, or Dolby Vision. During the testing process, OLED TVs will undoubtedly have a leading edge. Even if you watch it with the naked eye, you can easily tell which one is the OLED model. This is why LG is usually the champion of this event every year.
For LED TVs, the Samsung, Sony and Vizio models all use full-array local LED backlights. This means that the backlight is not a monolithic array, but is divided into different areas, and the image processing engine is used to flexibly adjust each part. The backlight. For example, a scene showing the bright moon in the night sky can better adjust the light levels for the night sky and the moon to achieve better picture quality. This is a mainstream trend of LED television.
In addition, due to the addition of HDR, the picture quality of LED TVs has been improved more significantly, which is more accurate than HDR OLED TVs. Of course, in the dark scene, LED TVs will be found to be brighter, but there are fewer black levels than OLED TVs.
Test Results
In the end, the LG OLED65G6P won first place with an average of 8.9 points. In addition to the Sony XBR-75X940D, the other parts were all ranked first in the project.
Sony XBR-75X940D ranks second with 8.0 points, its scoring points including color accuracy, daytime viewing effects and HDR performance, impressive, it can be said that is the closest LED models of OLED TV.
The Samsung UN78KS9800 has an average score of 7.3 points. The main disadvantage is the off-axis performance. Because it uses a curved screen, the side view screen will be slightly distorted.
The last one is the Vizio RS65-B2, with an average score of 6.9. Considering that the brand usually targets low-end and medium-end markets, this performance is understandable, and its black level and color accuracy are slightly inferior.
summary
In fact, the result of winning OLED TVs is not surprising, but it can also be seen that LED TVs are following closely and gradually catch up. Do not forget that the price of the 65-inch LG G6 is about 8,000 US dollars (approximately 5.3 million yuan), while the Samsung KS9800 of the same size model is only 4,500 US dollars (approximately 30,000 yuan). Even the larger Sony X940D (75 inches) costs about the same as the 65-inch LG G6. Perhaps with the further advancement of technology, HDR can help LED TVs achieve better results at a much lower price than OLEDs.
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