Designing a scientifically proper scanning backlight from scratch, for an existing LCD computer monitor, requires disassembling LCD’s.
There is an LCD parts store page that has info useful during my research, including a YouTube video on how to disassemble LCD panels for backlight replacement (including replacing a CCFL backlight with an LED backlight). The video shows disassembly of an LCD panel. The concept is similar, except I’ll be adding lots more backlight wattage (my design for an inexpensive 240 watt LED backlight for 23″ monitor using LED ribbon), and modifying an existing computer monitor such as Asus VG236H. There are many other videos on YouTube that instruct on how to disassemble an LCD, such as this video on replacing a broken backlight.