Abstract: A display substrate, a display panel and a display device are provided. The display substrate includes: a base substrate; a plurality of sub-pixels arranged in an array on the base substrate, wherein at least one sub-pixel includes a first electrode, the first electrodes of the sub-pixels in one of two adjacent rows of sub-pixels extend in a first direction, and the first electrodes of the sub-pixels in the other one of the two adjacent rows of sub-pixels extend in a second direction intersecting with the first direction; and a touch electrode and a plurality of touch lines, wherein the touch electrode includes a plurality of touch units, one touch unit is connected to at least one touch line, and different touch units are connected to different touch lines; and wherein each touch unit covers an even number of rows of sub-pixels.

Abstract: Provided are a power carrier signal coupling circuit and a communication system. The power carrier signal coupling circuit includes a first power carrier signal coupling channel and a second power carrier signal coupling channel. A phase of a three-phase alternating current (AC) power line serves as a common channel, the first power carrier signal coupling channel is arranged between the common channel and one of two phases of the three-phase AC power line other than the phase of the three-phase AC power line serving as the common channel; and the second power carrier signal coupling channel is arranged between the common channel and the other of the two phases of the three-phase AC power line other than the phase of the three-phase AC power line serving as the common channel.

Abstract: Provided are a power carrier signal coupling circuit and a communication system. The power carrier signal coupling circuit includes a first power carrier signal coupling channel and a second power carrier signal coupling channel. A phase of a three-phase alternating current (AC) power line serves as a common channel, the first power carrier signal coupling channel is arranged between the common channel and one of two phases of the three-phase AC power line other than the phase of the three-phase AC power line serving as the common channel; and the second power carrier signal coupling channel is arranged between the common channel and the other of the two phases of the three-phase AC power line other than the phase of the three-phase AC power line serving as the common channel.

Abstract: An inclined image capture device is provided, comprising an inclined means and a camera lens, wherein the inclined means has an interface which forms an inclined angle to the horizontal plane, and wherein the camera lens is fixed to the interface with its axis is tilted upward. Also, a facial recognition system is provided, comprising an inclined image capture device, a facial recognition cell and an output device.