The invention discloses a wide
visual angle and narrow
visual angle switching device and a wide
visual angle and narrow visual angle switching method. The wide visual angle and narrow visual angle switching device comprises a display control module and a display drive module which are connected through a connector, wherein the display control module comprises a
control unit, a
transmitter and a wide visual angle and narrow visual angle
signal switching module; the display drive module comprises a
time schedule controller and a wide visual angle and narrow visual angle drive module. For the wide visual angle and narrow visual angle switching device and the wide visual angle and narrow visual angle switching method disclosed by the invention, the
control unit controls a self-refresh
signal and a wide visual angle and narrow visual angle
signal, on one hand, the problem of
residual charge or ghost existing when the narrow visual angle is switched to the wide visual angle is solved, a micro
control unit does not need to be increased in the
time schedule controller, and the sacrifice of partial functions is not needed; on the other hand, during switching of the wide visual angle and thenarrow visual angle, a
system is in the state of quitting the PSR, so that the problem that no black picture
insertion is available during wide visual angle and narrow visual angle switching under the PSR condition is avoided, and finally, the visual watching effect of a user is promoted.