It sounds like you're describing a laptop screen panel with specific specifications. Here's a breakdown of the information you provided:
1. **Size**: 15.6 inches, indicating the diagonal size of the screen.
2. **Model Numbers**: NV156FHM-N63 and NV156FHM-N4N, which are likely specific model numbers for the screen panel.
3. **Screen Type**: IPS (In-Plane Switching), indicating a type of panel known for its wide viewing angles and good color accuracy.
4. **Resolution**: Full HD (1920x1080 pixels), suggesting a high-definition display.
5. **Circuit Back Fold**: This term likely refers to the arrangement of the internal components or circuits within the screen panel, possibly related to its slim design.
6. **Connector Type**: 30-pin narrow, indicating the type and number of pins used to connect the screen panel to the laptop's motherboard.
If you're considering replacing or upgrading your laptop screen with a panel matching these specifications, ensure compatibility with your laptop model and verify that the specifications (size, resolution, connector type, panel technology) match your requirements. Additionally, it's a good idea to check compatibility with your laptop's mounting brackets and hinges, as well as any other factors that may affect installation.