Au Optronics Corporation

A pixel driving device includes a driving transistor, a pixel driving circuit, an optical sensor circuit, and a reset and reading circuit. Driving transistor controls a light emission device. Pixel driving circuit is connected to the driving transistor and resets according to a first sweep signal. Pixel driving circuit compensates according to a second sweep signal. Pixel driving circuit controls the driving transistor according to a driving signal to drive light emission device. Optical sensor circuit includes a node. Optical sensor circuit resets the node to a voltage level of the driving signal. Light sensing circuit performs sensing to generate a light sensing signal. Reset and reading circuit is connected to the driving transistor, the pixel driving circuit, and the optical sensor circuit. Reset and reading circuit receives a reset and reading signal so as to reset the pixel driving circuit and to read out the light sensing signal.

A pixel driving device includes at least one data line and at least one driver integrated circuit. The at least one data line includes a first area and a second area on both sides. The first area and the second area are separated by the at least one data line. The at least one driver integrated circuit includes a first circuit and a second circuit. The first circuit is disposed in the first area, is configured to receive at least one first high-frequency signal so as to at least one first driving signal. The second circuit is disposed in the second area, is coupled to the first circuit and is configured to receive at least one low-frequency signal.

A display device has a display area and a peripheral area and includes data lines, scan lines, gate transmission lines, and sub-pixels. The data lines and the gate transmission lines extend from the peripheral area into the display area. The data lines located in the display area extend along a first direction. The scan lines are located in the display area and extend along a second direction intersecting the first direction. The gate transmission lines are electrically connected to the scan lines. One of the gate transmission lines includes first, second, and third wires located in the display area. The first and third wires extend along the first direction. The second wire extends along the second direction. The first, second and third wires are electrically connected in sequence. The third wire is electrically connected to one of the scan lines.

A pixel circuit includes a light emitting element, a first driver transistor, a second driver transistor, and a first compensation capacitor. A first terminal of the first driving transistor is configured to receive a power signal, and a second terminal of the first driving transistor is electrically coupled to the light emitting element. A first terminal of the second driving transistor receives the power signal, and a control terminal of the second driving transistor is electrically coupled to the light emitting element. The first compensation capacitance is electrically coupled to a control terminal of the first driving transistor and the second terminal of the second driving transistor, respectively.

A method for dimming is adapted for a display device. The method for dimming includes the steps of: obtaining a plurality of first area peak luminance of a plurality of areas of a panel and a backlight plate of the display device; averaging the plurality of first area peak luminance to obtain an overall peak luminance value; looking the overall peak luminance value up in a lookup table to obtain a luminance adjustment value; and adjusting the plurality of first area peak luminance of the plurality of areas into a plurality of second area peak luminance. The plurality of first area peak luminance are a same with or are different from the plurality of second area peak luminance.

A display device and an operating method of the display device are provided. The display device includes a first light emitting diode (LED), a first switch, a second switch, a second LED, a third switch, and a first controller. A first terminal of the first switch receives a first electrical signal. A first terminal of the second switch receives a second electrical signal. A first terminal of the third switch receives a third electrical signal. Here, whether the first switch, the second switch, and the third switch are switched on or off is determined by whether the first LED and the second LED are damaged or not. The first controller is configured to detect whether the first LED and the second LED are damaged or not, generate the second electrical signal and the electrical signal, and generate a plurality of control signals controlling the first switch to the third switch.

A display device includes a plurality of pixel electrodes, a plurality of gate lines, and a plurality of data lines. The pixel electrodes arranged in a matrix include a plurality of first color pixel electrodes. The gate lines are configured to sequentially provide a plurality of gate signals to the pixel electrodes in a plurality of line times. The data lines are configured to provide a plurality of the first data voltages and a plurality of the second data voltages to the first color pixel electrodes. The polarity of the first data voltages is opposite to the polarity of the second data voltages in the same frame. In each of the line times, the number of the first color pixel electrodes receiving the first data voltage is substantially equal to the number of the first color pixel electrodes receiving the second data voltages.

A scan driver circuit including shift register units and gate control circuits is provided. The shift register units are in a peripheral area of a display panel, and for receiving first clock signals. The gate control circuits are in an active area of the display panel, and for receiving second clock signals. Each shift register unit is coupled with corresponding N of the gate control circuits, and for providing a corresponding one of the first clock signals as a control signal to the corresponding N of the gate control circuits. The corresponding N of the gate control circuits are coupled with corresponding M of gate lines. The corresponding N of the gate control circuits are for providing, according to the control signal, corresponding M of the second clock signals as M gate signals to the corresponding M of gate lines, in which M and N are positive integers.

A display device adapted to perform in-screen fingerprint identification is provided. The display device includes a plurality of sub-pixel circuits, a plurality of light sensing circuit stages, and a plurality of sensing drive lines. The light sensing circuit stages correspond to the sub-pixel circuits. The sensing drive lines drive the light sensing circuit stages sequentially. In a first time interval, a first sensing drive line among the sensing drive lines provides a first sensing drive signal to a q th light sensing circuit stage and a latter light sensing circuit stage among the light sensing circuit stages. In the first time interval, the q th light sensing circuit stage performs a light sensing reset operation according to the first sensing drive signal, and the latter light sensing circuit stage performs a light sensing write operation according to the first sensing drive signal.

A display device and a display method are provided. The display device includes a board, a sensing circuit, and a feedback control circuit. The board includes a display array formed by a plurality of pixels. The sensing circuit includes a test pixel and a light sensor. The light sensor receives light emitted by the test pixel to generate a corresponding sensing signal. The feedback control circuit receives the sensing signal and generates a pulse width adjusting signal to adjust a pulse width at which the pixels are operated for display.