The iPhone Screen Backlight details

All above can be fixed by replacing with a best backlight from Etradesupply if the screen and touch are in good condition. In this case, it is necessary for us to figure out the structures of the LCD backlight which can be divided into 10 parts as below.
1. Top protective film
2. Cross prism film
3. Lower Diffuser
4. Light Guide plate
5. Backlight frame
6. Lamp reflector plate
7. Lamp
8. Bottom reflector plate
9&10. Bottom protective film
Read more:https://www.etradesupply.com/blog/something-about-iphone-screen-backlight-you-may-not-know/