In the "Files" section I uploaded datasheets of the SC4 and the SC7 displays. Comparing:

• Features & active display size 100% similar
• Slightly different outer dimensions
• Pin namings:

Furthermore the SC4 seems to have two sets of gate drivers. The SC7 seems to don't have this (upgraded version?). The PaperBack schematic just connects the gate driver pins for the two sets all together, and pulls SHR high all the time.

Voltages are 22, -20, -15 and +15 V for both panels. Maximum power of the SC7 is 1131 mW vs 1100 mW on the SC4 :-D Clock is still 200 kHz.

Conclusion: it all looks very similar. Yay!

Power-on sequence looks different to the eye, need to look into that further. But it might just be a matter of styling the PDF...