Display apparatus, control circuit, and anti-peeping display method

A control circuit for implementing anti-peeping display of a display apparatus, the display apparatus comprising a display panel and a backlight module, and the backlight module comprising:

• a back plate, comprising a bottom plate;
• one or more light bars, arranged on a side of the bottom plate, wherein each of the one or more light bars comprises:
• a circuit board;
• a plurality of first light-emitting units, arranged on the circuit board, and configured to generate diffuse light;
• and
• a plurality of second light-emitting units, arranged on the circuit board, and configured to generate collimated light;
• a dimming diaphragm, arranged on a side of the one or more light bars away from the bottom plate, and having a diffusion mode and a transparent mode;
• and
• a driving assembly, arranged on the bottom plate, connected to at least one of the one or more light bars, and configured to drive the light bar to rotate;
• the control circuit comprising:
• a display control module, configured to receive an image signal and control the display panel to display an image according to the image signal;
• wherein, the control circuit further comprises:
• an anti-peeping module, configured to perform following operations:
• receiving an anti-peeping signal, and determining an anti-peeping area;
• controlling the dimming diaphragm to be alternately switched between the transparent mode and the diffusion mode;
• in response to the dimming diaphragm being switched to the transparent mode, disabling a part of the first light-emitting units rotating into the anti-peeping area from emitting light and enabling a part of the second light-emitting units rotating into the anti-peeping area to emit light;
• and
• in response to the dimming diaphragm being switched to the diffusion mode, disabling the part of the first light-emitting units rotating into the anti-peeping area and the part of the second light-emitting units rotating into the anti-peeping area from emitting light.

A display apparatus, comprising:

• a display panel, a backlight module, and a control circuit;
• and
• wherein the backlight module comprises:
• a back plate, comprising a bottom plate;
• one or more light bars, arranged on a side of the bottom plate, wherein each of the one or more light bars comprises:
• a circuit board;
• a plurality of first light-emitting units, arranged on the circuit board, and configured to generate diffuse light;
• and
• a plurality of second light-emitting units, arranged on the circuit board, and configured to generate collimated light;
• a dimming diaphragm, arranged on a side of the one or more light bars away from the bottom plate, and having a diffusion mode and a transparent mode;
• and
• a driving assembly, arranged on the bottom plate, connected to at least one of the one or more light bars, and configured to drive the light bar to rotate;
• the control circuit being configured to implement anti-peeping display of the display apparatus, and comprising:
• a display control module, configured to receive an image signal and control the display panel to display an image according to the image signal;
• wherein the control circuit further comprises:
• an anti-peeping module, configured to perform following operations:
• receiving an anti-peeping signal, and determining an anti-peeping area;
• controlling the dimming diaphragm to be alternately switched between the transparent mode and the diffusion mode;
• in response to the dimming diaphragm being switched to the transparent mode, disabling a part of the first light-emitting units rotating into the anti-peeping area from emitting light and enabling a part of the second light-emitting units rotating into the anti-peeping area to emit light;
• and
• in response to the dimming diaphragm being switched to the diffusion mode, disabling the part of the first light-emitting units rotating into the anti-peeping area and the part of the second light-emitting units rotating into the anti-peeping area from emitting light.