Patent ID: 8770817

Claim:
A video display device comprising: a housing; a display module comprising a display screen, the display module configured to be at least partly housed in the housing; a light guide opposite the display screen with respect to the display module, and comprising a first edge and a second edge parallel to each other; a first light emitting unit facing the first edge, positioned along the first edge, comprising a first terminal and a second terminal, and not being a plane symmetric with respect to a plane parallel to the display screen; a second light emitting unit facing the first edge, positioned along the first edge, comprising a third terminal and a fourth terminal, and not being a plane symmetric with resect to a plane parallel to the display screen, wherein the second terminal and the third terminal are positioned closer to each other, and the first terminal and the fourth terminal are positioned farther from each other; a third light emitting unit facing the second edge, positioned along the second edge, comprising a fifth terminal and a sixth terminal, and not being a plane symmetric with respect to a plane parallel to the display screen; and a fourth light emitting unit facing the second edge, positioned along the second edge, comprising a seventh terminal and an eighth terminal, and not being a plane symmetric with respect to a plane parallel to the display screen, wherein the sixth terminal and the seventh terminal are positioned closer to each other, and the fifth terminal and the eight terminal are positioned farther from each other, wherein a shape of the first light emitting unit and a shape of the fourth light emitting unit are identical to each other, the shape of the first light emitting unit and a shape of the second light emitting unit are different from each other, the shape of the second light emitting unit and a shape of the third light emitting unit are identical to each other, the first light emitting unit opposes the third light emitting unit, and the second light emitting unit opposes the fourth light emitting unit.