You would need to check with the manufacturer of the Liliput Field monitor. Does it support HDMI input from an external device? If so, see these article on HDMI:
https://gopro.com/help/articles/how_to/Best-Ways-to-Achieve-Video-Out-Signal-via-HDMI
https://gopro.com/help/articles/question_answer/HDMI-Detectives
https://gopro.com/help/articles/solutions_troubleshooting/No-Signal-when-Outputting-with-HDMI