iPhone 6s Plus backlight issue?

My trusty old 6s Plus works great with one exception: It has developed some bright white spots and vertical streaks on the display (image link below). I am fairly adept with electronics repair and have successfully done several "ifixit" level jobs on phones, including a battery replacement on this one a year or so ago. I see several kits available on the web for issues like this but some have different names such as "backlight repair", "screen replacement", "digitizer replacement", etc. Is there a commonly used kit for this job?

thanks to all for looking

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