Manufacture phone screens

There are several companies that manufacture phone screens. Some of the well-known manufacturers in the industry include:

1. Samsung Display: Samsung Display is a subsidiary of Samsung Electronics and is one of the leading manufacturers of phone screens. They produce a wide range of display technologies, including OLED (Organic Light-Emitting Diode) screens.
2. LG Display: LG Display is another major player in the phone screen manufacturing industry. They are known for producing LCD (Liquid Crystal Display) and OLED screens for smartphones and other devices.
3. BOE Technology Group: BOE Technology Group is a Chinese company that specializes in the research, development, and manufacturing of display technologies. They supply screens to various smartphone manufacturers worldwide.
4. Japan Display Inc. (JDI): JDI is a Japanese company that designs and manufactures LCD panels for smartphones and other devices. They are known for their advanced display technologies.
5. AU Optronics (AUO): AUO is a Taiwanese company that produces LCD panels for various applications, including smartphones. They have a significant presence in the global display market.
6. Sharp Corporation: Sharp is a Japanese company that manufactures LCD panels and other electronic components. They supply screens to smartphone manufacturers and also produce their own smartphones.
7. Tianma Microelectronics: Tianma is a Chinese company that specializes in the development and manufacturing of display modules, including LCD and OLED screens. They supply screens to various smartphone brands.

It's worth noting that the phone screen manufacturer landscape is dynamic, and new players may emerge or existing ones may shift their focus. The companies listed above represent some of the prominent manufacturers as of my knowledge cutoff in September 2021.