Display device

A display device, comprising:

• a display panel comprising a plurality of pixels;
• and
• a power management circuit configured to provide a power voltage to the pixels via first through (N)th power cables,
• wherein the first through (N)th power cables respectively comprise first through (N)th ground lines, and the power management circuit is configured to control the power voltage based on first through (N)th connection signals respectively received from the first through (N)th ground lines, wherein N is an integer greater than 1.

A display device, comprising:

• a display panel comprising a plurality of pixels;
• a first source board and a second source board connected to the display panel;
• and
• a control board connected to the first source board via a first power cable comprising a first detecting line and a second detecting line, and connected to the second source board via a second power cable comprising a third detecting line and a fourth detecting line,
• wherein a first terminal of the second detecting line is connected to a first terminal of the first detecting line via the first source board,
• wherein a first terminal of the third detecting line is connected to a second terminal of the second detecting line via the control board,
• wherein a first terminal of the fourth detecting line is connected to a second terminal of the third detecting line via the second source board, and
• wherein the control board comprises:
• a processor configured to provide a detecting signal to a second terminal of the first detecting line;
• an enable signal generator configured to receive a feedback signal from a second terminal of the fourth detecting line and to generate a first enable signal based on the feedback signal;
• and
• a power voltage controller configured to control a power voltage based on the first enable signal.

A display device, comprising:

• a display panel comprising a plurality of pixels;
• a first source board and a second source board connected to the display panel;
• and
• a control board connected to the first source board via a first power cable and a second power cable, and connected to the second source board via a third power cable and a fourth power cable,
• wherein the control board is configured to control a power voltage provided to the pixels based on a first connection signal received from a first ground line of the first power cable, a second connection signal received from a second ground line of the second power cable, a third connection signal received from a third ground line of the third power cable, and a fourth connection signal received from a fourth ground line of the fourth power cable.