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80 inches is the critical point of the home market I think the average family can accept the 70-inch to 80-inch screen size, but the 100-120-inch products to be popularized on the more effort. First of all, for LCD products, a 100-inch product would be more troublesome to install, and it would be more laborious to transport. Also note that 100-inch LCD panel products consume more energy. 
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How big is the first 80 inches is the critical point of the home market?
The entry size of LCD TVs is constantly increasing, and 32-inch products have fallen behind. With the drop in LCD TV prices, it can be said that 55-inch or even 60-inch TVs have become the standard for people to buy LCD TVs. The author believes that the future demand size will continue to increase. Why do you say so?
How big is the first 80 inches is the critical point of the home market?
First of all, China's panel industry continues to grow and its scale is already the world's largest. Therefore, the price of LCD panels will gradually decline, and at the same time, the size will continue to rise. Therefore, the LCD TVs are upgraded based on industry standards. And the increase in the size of LCD TVs is only a matter of the upgrading of the next generation of lines. There is no real technological upgrading in nature, so the technical difficulty is not great. This is different from the development of OLED panels. In fact, 32-inch and 70-inch LCD panels are only different in substrate size. LCD TVs and projection screen sizes are growing
And now projector products continue to develop and begin to enter the home market. The brightness of LED projectors is getting higher and higher. The price of 1000 lumens products can be reduced to less than 4,000 yuan by 2018, and even one or two years may cost about 3,000 yuan to buy ultra-thousand-lumen LED pico projectors. This brightness can easily project 70 to 80 inches of screen size when used at night. Projection upgrades raise people’s demand for large screens
Therefore, from the perspective of LCD TVs or pico projectors, size upgrade is a big trend. The same is more than 3,000 yuan. Why do people not choose larger products? Some people think that the living room of the Chinese is not that big, so the upgrade of the size is actually not the first requirement. Is this correct? 100-inch flat panel display device is not suitable for ordinary families
The above 100-inch projection screen requires higher brightness, I believe that must be achieved above 1500 ANSI lumens before, but the current LED micro projector can not achieve this brightness; traditional light source or laser light source products can achieve this brightness, but The volume of traditional products is relatively large, it is inconvenient to place, and the life of the light source is relatively short; the product volume of the laser light source is also relatively large, and at the same time its price is relatively expensive, and there is no realistic basis for widespread popularization. Traditional projectors are bright enough but too large and light source life is a problem
Overall, 70 inches to 80 inches should be a demarcation point for home applications. Larger-sized products should belong to the high-end market, and some users need such products. However, 80-inch and above products are not so popular, not only LCD panel equipment or projector equipment, they have their own obvious short board, so I think 80 inches is a demarcation point.