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        Smartphone display rolls out in China

        By Liu Kun in Wuhan and Chen Meiling | chinadaily.com.cn | Updated: 2022-12-30

        TCL1.jpeg

        The first 2K high-frequency PWM flexible display used in smartphones in China entered mass production at the Wuban base of TCL China Star Optoelectronics Technology recently. [Photo by Zhou Chao/For chinadaily.com.cn]

        The first 2K high-frequency PWM flexible display used in smartphones in China has entered mass production at the Wuban base of TCL China Star Optoelectronics Technology recently.

        High-frequency PWM — or pulse width modulation — is able to adjust the luminance of displays depending on various conditions, such as when a user goes indoors from bright outdoor sunlight or turns on a light in darkness. The idea is to ease eye strain.

        The technology is seen a major breakthrough in the telephone display sector. The product was co-developed by TCL CSOT and smartphone vendor Xiaomi. Consumers have favored 2K flexible displays because of their high resolution. However, the core technology has been monopolized by foreign companies for a long time.

        TCL CSOT invested more than 75 billion yuan ($10.76 billion) in the Wuhan manufacturing base.

        TCL2.jpeg

        The first 2K high-frequency PWM flexible display used in smartphones in China entered mass production at the Wuban base of TCL China Star Optoelectronics Technology recently. [Photo by Zhou Chao/For chinadaily.com.cn]