A driving transistor is configured to control driving current for the light-emitting element. A first capacitive element and a second capacitive element are connected in series between a gate and a source of the driving transistor. A first switching transistor is configured to switch connection/disconnection between a data line and an intermediate node located between the first capacitive element and the second capacitive element. A second switching transistor is configured to switch connection/disconnection between the gate and a drain of the driving transistor. A third switching transistor is configured to switch connection/disconnection between the intermediate node and a reference power line. A fourth switching transistor is configured to switch supply/non-supply of driving current from the driving transistor to the light-emitting element. A fifth switching transistor is configured to switch connection/disconnection between an anode of the light-emitting element and a reset power line.

The present disclosure provides a pixel circuit, a control method for the same, and a display device. The pixel circuit comprises a pixel driving circuit, a mode selecting circuit, and a light emitting device. The pixel driving circuit is configured to output a driving current. The mode selecting circuit is configured to select a different light emitting mode according to a different mode selecting signal. The light emitting device is configured to emit light having a different brightness according to a different light emitting mode. The light emitting device comprises a first electrode structure, a second electrode structure, and a functional layer between the first electrode structure and the second electrode structure. The mode selecting circuit comprises a first switching sub-circuit and a second switching sub-circuit.

A light emitting display device includes a pixel circuit including: a first transistor having a first electrode connected to a first node coupled to a first power supply line, a second electrode connected to a second node, and a gate electrode connected to a third node; a second transistor having a first electrode connected to the first node, a second electrode connected to the third node, and a gate electrode connected to a first gate line; a light emitting diode connected to the first transistor; a first capacitor having a first electrode connected to the third node and a second electrode connected to a conductive line and an anode electrode of the light emitting diode; and a second capacitor having a first electrode connected to the third node and a second electrode connected to a constant voltage source which supplies a DC voltage.

A driving method for driving an electrophoretic display comprising four types of particles, the first type of particles and the third type of particles are positively charged, and the second type of particles and the fourth type of particles are negatively charged, the method comprises the steps of: (i). applying a first driving voltage to the pixel of the electrophoretic display for a first period of time at a first amplitude to drive the pixel to a color state of the fourth type of particle at the viewing side; and (ii). applying a second driving voltage to the pixel of the electrophoretic display for a second period of time, opposite to that of the first driving voltage and a second amplitude smaller than that of the first amplitude, to drive the second type particle towards the non-viewing side.

A light emitting display device where a pixel circuit detecting a threshold voltage of a driving transistor in each of a plurality of subpixels is arranged in a matrix, includes: a threshold voltage estimating part generating a threshold voltage estimation value by estimating the threshold voltage of the driving transistor through a data counting method; a reference voltage modifying part generating a reference voltage modification value by modifying a reference voltage used for detecting the threshold voltage based on the threshold voltage estimation value; an image data voltage modifying part generating an image data voltage modification value by adding a threshold voltage detection value to a data voltage corresponding to an image data; and an accumulated deterioration calculating part calculating an accumulated deterioration by accumulating a deterioration data of a function of the data voltage.

With regard to a display device having an external compensation function, the occurrence of operational failure caused by off-leakage at a transistor is suppressed. A unit circuit configuring a gate driver is provided with a stabilization transistor including a control terminal, a first conduction terminal connected to a first internal node, and a second conduction terminal connected to a first control signal line, a stabilization circuit-configured to control a potential of the control terminal of the stabilization transistor-based on a potential of the first internal node, a first reset transistor including a control terminal, a first conduction terminal connected to a second output terminal, and a second conduction terminal connected to a first reference potential line, and a reset circuit configured to control a potential of the control terminal of the first reset transistor based on the potential of the first internal node.

The light emitting display panel includes a plurality of pixels, a plurality of gate lines transferring gate signals to the plurality of pixels, a plurality of data lines transferring data voltages to the plurality of pixels, and a sensing line connected to a plurality of light emitting devices respectively included in the plurality of pixels. Each of the plurality of pixels includes a light emitting device, a sensing control transistor including a first terminal connected to a first terminal of the light emitting device and a gate connected to a sensing control line, and a sensing switching transistor including a first terminal connected to a second terminal of the sensing control transistor, a second terminal connected to the sensing line, and a gate connected to a sensing switching line.

A display device includes a switch, an initialization line, a capacitor, a data line, a first transistor, a second transistor, a driving transistor, and a diode. The capacitor includes a first electrode and a second electrode. To the first electrode through at least the initialization line, the switch may output a first voltage in a first period of a horizontal time and may output a second voltage unequal to the first voltage in a second period of the horizontal time. The first transistor may connect the data line to the first electrode in response to a scan signal. The driving transistor may provide a driving current based on a voltage of the first electrode. The second transistor may connect the initialization line to the second electrode in response to an initialization signal. The diode may emit light based on the driving current.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for brightness control for under-display fingerprint sensor are disclosed. A method includes receiving, at a computing device, an indication to activate an under-display sensor that is located underneath a display of the computing device; activating a collection of LEDs of the display to provide illumination for the under-display sensor, including activating an LED in the collection of LEDs by: establishing, by drive circuitry of the LED, a first overdriven voltage across an LED-driving transistor that is arranged to energize the LED; establishing a second overdriven voltage across the LED-driving transistor; and establishing a steady state voltage across the LED-driving transistor; and activating the under-display sensor by reading a signal from the under-display sensor once the collection of LEDs has activated, including once the steady state voltage has been programmed across the LED-driving transistor.

A pixel driving circuit, a pixel driving method and a display device are provided. the pixel driving circuit includes a driving circuit and a light-emitting duration control circuit, a first end of the driving circuit is connected to a first voltage end, a second end of the driving circuit is connected to the light-emitting element, and the driving circuit is configured to control the first end and the second end to connect to each other; the light-emitting duration control circuit is configured to switch on or switch off a connection between the second end of the driving circuit and the light-emitting element, according to a control data voltage input by a control data line and a control initial voltage input by a control initial voltage end.