Gear up ...
Those 70% NTSC panels usually cover 100% sRGB & like 70% ARGB, so its fine. You can't get anything much better on a laptop, except those 4K OLEDs.Just saying, but if you need a good panel because your work will end up in printed images, you absolutely need a display that can do a very high percentage of Adobe RGB and preferably 100% sRGB at the very least. You will want accurate greens and blues because humans are comparatively very sensitive to those spectrum bands.
NTSC, or rather the YIQ colour space, is not used in any kind of image processing in computers. So a claim to meet 50% or 70% of NTSC spec is largely meaningless because
1. you will be unable to find any kind of general purpose display driver that supports YIQ and
2. YIQ is a notoriously difficult colour space to render correctly, which is why digital broadcast solutions as well as some NTSC variants switched to YUV for their transmissions.
There are probably plenty of transformation formulae to convert YIQ to RGB, but they're useless because the software you will use to create your renders will likely work in RGB. So look at RGB colour accuracy (this includes Rec. 709 and Rec. 2020/Rec. 2100).
Of course, I only mention this because it seems that colour accuracy is important to your work, but if it isn't then anything that has a decent-looking screen will do.