Abstract: A display apparatus includes a backlight module with backlight zones, a panel over the backlight module, and a circuit configured to generate compensated pixel data for the panel based on image data and an arrangement of the zones of the backlight module, in which the image data has image areas respectively corresponding to the backlight zones. For a first image area being a low-luminance image area and a luminance intensity of a first zone of the zones corresponding to the first image area being less than a luminance intensity of a second zone corresponding to a second image area neighboring the first image area, the circuit performs first pixel compensation for high-luminance pixels in the second image area and second pixel compensation on low-luminance pixels in the second image area, in which the second pixel compensation is greater than the first pixel compensation.

Abstract: A display device includes a display panel and a circuit. For a first sub-pixel, the circuit obtains a corresponding second sub-pixel. The circuit calculates a first compensation value according to the grays levels of the first sub-pixel and the second sub-pixel, and calculates a second compensation value according to the polarity states of the first sub-pixel and the second sub-pixel and the difference between the gray levels of the two sub-pixels. The circuit also calculates a gain according to the position of the first sub-pixel, compensates the gray level to the first sub-pixel according to the first compensation value, the second compensation value and the gain to obtain an output gray level, and drives the first sub-pixel according to the output gray level.

Abstract: A welding gun of plastics includes a main body, a power cord, a power controller, a transformer and two welding tubes. Each welding tube has one end fixed in the main body and another end formed with a plugging hole extended outward the main body for a pin of a welding wire to plug in. The welding wire can be electrified to create thermal energy that is able to instantly melt the interface of two pieces of plastics, enabling the welding wire to be embedded in plastics so as to reinforce fusing strength.