Liquid　crystal　(LC)　is　an　intermediate　state　compound　between　liquid　and　crystal,　which　has　the　anisotropy　of　crystal　molecules　while　having　the　fluidity　of　liquid.　It　is　a　cutting-edge　technology　in　optoelectronics.　The　large-aperture　LC　lens　require　larger　voltages,　and　there　are　certain　safety　issues　and　equipment　requirements.　This　situation　indicates　a　great　need　for　a　safe　and　portable　low-power　device.　A　triboelectric　nanogenerator　(TENG)　can　collect　the　energy　in　the　environment　and　convert　it　into　usable　electric　energy.　It　has　the　advantages　of　small　size　and　convenient　portability,　and　can　realize　the　use　of　renewable　energy.　This　paper　proposes　a　novel　feather　TENG　(F-TENG)　using　feathers　as　friction　materials.　The　approximate　values　of　open-circuit　voltage　and　short　circuit　current　of　the　manufactured　F-TENG　can　reach　247　V　and　27　μA,　respectively.　After　simple　processing　of　the　device,　the　performance　can　be　further　improved.　We　realized　the　use　of　F-TENG　to　power　a　LC　lens　test　system,　thus　providing　a　new　application　idea　for　the　display　field.　This　study　provides　a　simple　and　inexpensive　method　for　harvesting　mechanical　energy　to　power　experimental　test　equipment　and　facilitate　the　large-scale,　intelligent　practical　application　of　TENG　systems.　©　2022　Elsevier　Ltd