When it comes to TVs, many consumers prioritise high picture quality, which is dependent on factors including the “viewing angle”, “anti-glare performance”, “brightness uniformity” and “contrast ratio and light output’. The current test assessed the overall picture quality performance of the models by consolidating lab measurements of the 4 areas above and results from an expert panel review. As each pixel on OLED screens can luminate individually, it could achieve more intricate contrast against a bright image, offering better conditional advantage in terms of the overall picture quality. The 3 OLED models all received 4 to 5 points for the 4 areas, while 2 models were even rated an outstanding 4.5 points in the overall picture quality, making them more suitable for consumers pursuing high picture quality. According to the grading by the review panel, the 3 screen types did not show great variance in picture quality during digital TV broadcast viewing, suggesting that the lower-priced LED category or the mid-priced QD/ Mini LED category would be sufficient to meet the needs of general users. To further differentiate the picture quality, consumers can refer to the test results of the 4 mentioned aspects.

The visual effect could vary when viewing a liquid crystal display screen from different positions. Generally speaking, when the viewing angle is slanted to a certain degree, the brightness of the picture would drop drastically or the colour would become noticeably distorted. One of the technical test items measured the brightness and colour performance of the picture from different angles. 1 OLED model received the highest of 5 points, while 2 QD/Mini LED models had a more significant drop in brightness at a slanted angle and were only rated 2.5 points. Some TV screens have anti-glare treatment on their surfaces, but the performance varied considerably among the models, with 3 OLED models rated 4.5 points or higher, while 1 QD/Mini LED model received only 2.5 points. The test also measured the brightness uniformity when displaying nearly completely black and nearly pure white images across the entire screen. The models received scores ranging from 3 to 5 points, of which 2 OLED models had the best performance. As for the contrast ratio test, which measures the difference in brightness between the brightest and darkest parts of the screen, and the light output test, all models received overall scores of 4 points or higher. Among them, 3 OLED models had the highest contrast ratios, effectively displaying the depth of darker pictures. However, not all TV models were labelled with the contrast ratio, nor did they provide testing methods, making it difficult for consumers to compare and make informed choices. Thus, consumers should not overly rely on manufacturers' claims.

4 Models Had Clear Sound Definition with 4.5 High Rating in Sound Quality

Apart from the picture quality, the sound quality is another important aspect of the overall TV-viewing experience. 4 models had clear sound definition and powerful bass notes, with satisfactory performance when playing classical music, pop music and drama, thus received high scores of 4.5 points, including 2 models each from the OLED and QD/Mini LED categories. The sound quality of 1 LED model was judged to be thin and flat while lacking bass notes, and only received 2.5 points. This model might be unable to satisfy consumers seeking a high-quality audio experience.