To find your SSD manufacturer:
Click on About This Mac
Click on More Info....
Click on System Report
Click on Sata/SataExpress
Look for the Model number:
Mine is reporting: APPLE SSD SM0512F <--- Which is a Samsung
To find your Screen Manufacturer:
Open Terminal
Paste this command
ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6
Read the output, you are looking for an LP prefix to numbers reported back:
Mine is reporting: LP116WH4-TJA3 Color LCD <-- Which is an LG
If the prefix is not LP then you have a Samsung display.
The information you are seeking has been posted quite a bit before and I can find numerous threads on the subject.
It also interesting to note that some have sought to have the LG screen calibrated. I had to do this on mine as the default appeared a bit washed out. After calibration, it is much better to my eyes.