Viewing angle controlling light source device and display apparatus

A viewing angle controlling light source device, comprising:

• a base substrate;
• a light emitting array arranged on the base substrate, wherein the light emitting array comprises a plurality of light emitting units;
• and
• at least one liquid crystal lens array arranged on the light emitting array, wherein the liquid crystal lens array comprises a plurality of liquid crystal lens units corresponding to the light emitting units one by one;
• wherein
• each of the liquid crystal lens units comprises a first electrode disposed on a first base, a second electrode disposed on a second base, and a liquid crystal layer arranged between the first electrode and the second electrode;
• the first electrode and the second electrode are oppositely arranged;
• the first electrode and the second electrode are configured to apply voltages respectively;
• and each of the liquid crystal lens units is configured to adjust a light emergent direction of light emitted by the light emitting units after the light transmitting through the liquid crystal lens unit by regulating a voltage difference between the first electrode and the second electrode.