HY's model is made in Korea, and adopts the polarizing film of American DDD, which is the RD linear polarizing film. At least it is subjective, and the game effect is no worse than that of active LCD. However, polarized 3D will reduce the resolution by half when used, so HD 3D movies are not supported in 3D mode. At present, only LG's FPR film can realize polarization without resolution loss, but now there are only TV products and no display products. If you plan to watch HD 3D movies, it is not recommended to buy them. The price of polarized 3D LCD is around 2000 yuan, but glasses are much cheaper than active ones. Original glasses 100 yuan, domestic compatible RD-line glasses can be bought for tens of dollars.