A method of driving a display panel includes: generating a data signal having a difference between a number of positive frames and a number of negative frames; and displaying an image according to the data signal.

An organic light-emitting display panel includes a power input line, a power transfer line, and first and second power wires. The power input line extends in a first direction of a display area and applies a first source voltage. The power transfer line extends in the first direction, is connected to a center point of the power input line, and transfers the first source voltage to the power input line. The first power wire and second power wire extends in a second direction outside the display area and supply the first source voltage to the power input line and the power transfer line. A plurality of pixels are arranged in a matrix in the display area and are connected to the power input line to receive the first source voltage through the power input line.

A pixel circuit, a display panel, a display device, and a driving method. The pixel circuit includes a light emitting element, a driving transistor, a light emitting control circuit, a reset circuit, a threshold compensation circuit, a first data write circuit, and an initializing circuit. The reset circuit includes a first transistor, the first data write circuit includes a third transistor, and a channel length-width ratio of the first transistor is greater than a channel length-width ratio of the third transistor.

A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory. In particular, the methods are effective for minimizing edge ghosting when a pixel of an active matrix electrophoretic display undergoes a white to white transition or a black to black transition during an update between first and second images.

A pixel circuit, an organic electroluminescent display panel and a display device, in a reset and compensation phase, a charge control module of the pixel circuit makes a data signal end and the first input end of a reset control module switch on, and the reset control module resets the control end and a output end of a drive module and compensates reference voltage; in a data writing phase, the charge control module writes the data signal inputted by the data signal end to the first input end of the reset control module; in a light-emitting phase, a light-emitting control module makes the output end of the drive module and the input end of the light emitting device switch on and drives the light emitting device to emit light by integrating the data signal inputted into the drive module with the reference voltage signal compensated into the drive module, which realizes the effect that the drive current driving the light emitting device to emit light is irrelevant to the power supply voltage signal, eliminates the influence on luminous brightness of the light emitting device caused by IR drop of the power supply voltage signal inputted into the pixel circuits, and further guaranteeing the display effect of the display panel.

A display module (10) includes: a display panel (12) and a circuit board (14) coupled to the display panel (12). The display panel (12) includes a driving chip (122) and a display unit (124); and the circuit board (14) includes a first filter element (142), wherein the first filter element (142) is coupled to the driving chip (122) and the display unit (124), and a direct current signal output by the driving chip (122) is filtered by the first filter element (142) and then transmitted to the display unit (124). The present disclosure also provides a display apparatus (1100).

A display unit includes: a display section having an electrophoretic display device provided among a plurality of first electrodes and a second electrode, and displaying an image by switching a white, black, or gray-scale display state depending on an applied voltage; and a drive circuit driving the display section by varying a voltage applied to the first electrodes, while holding the second electrode at a common potential during a write period including frame period(s). When a first region of the display section has a first display state of white or black during a first write period, and an image of a second region thereof is changed while holding the first display state at the first region upon switchover from the first write period to a temporally-continued second write period, the drive circuit offsets the common potential toward a direction in which a voltage applied to the first region is raised.

A residual DC measurement device of the present invention receives light emitted from a display device and outputs a light reception signal, measures a flicker value of the display device on the basis of the light reception signal output while the flicker measurement image is displayed by the display device and stores the flicker value in a storage as an initial flicker value, subsequently causes the display device to display a predetermined display image for a predetermined display time, causes the display device to display the flicker measurement image again when the predetermined display time elapses, measures the flicker value of the display device on the basis of the light reception signal output while the flicker measurement image is displayed and stores the flicker value in the storage as a posterior flicker value, and calculates a flicker change amount by calculating the posterior flicker value stored in the storage and the initial flicker value as an index value representing the residual DC.

A display panel and a display device are provided. The display panel includes a display region and a non-display region surrounding the display region. The non-display region is provided with multiple sensing components. The multiple sensing components each are configured to generate a first signal when the display panel is in a flattened state. When the display panel is in a partially-rolled state, the display panel includes a flattened part and a rolled part, a sensing component in the flattened part is configured to generate the first signal, and a sensing component in the rolled part is configured to generate a second signal. The multiple sensing components each are configured to generate the second signal when the display panel is in a fully-rolled state.

Disclosed is a display device including a power factor corrector including a converter correcting a power factor of an input power and a controller controlling the converter, a power transformer converting power, of which a power factor is corrected by the power factor corrector, and a display panel receiving power through the power transformer to display an image. The controller controls the converter to increase a first voltage when the first voltage output through the converter is less than a specified voltage. Other various embodiments as understood from the specification are also possible.