The present disclosure provides a pixel driving circuit including a driving transistor, a capacitor and a light emitting device, and further includes: a first reset module; a data writing module; a threshold compensation module including a compensation transistor; a light emitting control module configured to disconnect the first power terminal from the first electrode of the driving transistor and disconnect the second electrode of the driving transistor from the light emitting device in the data writing phase and the reset phase; and to enable the first power terminal and the first electrode of the driving transistor to be electrically connected to each other and enable the second electrode of the driving transistor and the light emitting device to be electrically connected to each other in a light emitting phase; the compensation transistor is an oxide transistor, and the driving transistor is a low temperature poly-silicon transistor.

A sensor includes a plurality of electric lines including row lines and column lines, a photodiode in a pixel, a drain of a first transistor connected to the photodiode in the pixel, a drain of a second transistor connected in series with a source of the first transistor in the pixel, a source of the second transistor being connected to a column line among the plurality of electric lines, and both a gate of the first transistor and a gate of the second transistor being connected to a row line among the plurality of electric lines, wherein a channel material of the first transistor is different from a channel material of the second transistor.

An EL display includes a flexible board including: a plurality of connection terminals arranged at one side for connection with panel lines formed on a panel board; terminal connection lines for connecting points inside the flexible board with the connection terminals; serial connection lines for connecting between two or more of the connection terminals. On the flexible board: driver output terminals of each of gate driver ICs are connected to terminal connection lines; driver input terminals of the gate driver IC are connected to either terminal connection lines or the serial connection lines; and control terminals for performing logic setting of the gate driver IC are each arranged between connection terminals and driver input terminals to which the serial connection lines are connected. As a result, the number of control lines to be formed on the flexible board in serial connection is reduced.

The present disclosure provides a pixel circuit, its driving methods, an OLED display panel and a display device. The pixel circuit includes a driving controlling unit configured to, under the control of a first scanning signal and a second scanning signal, charge or discharge a first storage capacitor through a first level, a second level and a data voltage, so as to compensate for a threshold voltage of a driving transistor with a gate-to-source voltage of the driving transistor when an OLED is driven by the driving transistor to emit light; and a touch controlling unit including a touch sensor and configured to, under the control of the first scanning signal and the second scanning signal, sense by the touch sensor whether or not a touch is made and transmit a corresponding touch sensing signal to a touch signal reading line.

An OLED pixel circuit and a display apparatus comprising the OLED pixel circuit. An OLED pixel circuit comprises an OLED and driving units (TFT1, S1, C) for driving the OLED to emit light, wherein one electrode of the OLED is connected to the driving units (TFT1, S1, C). The OLED pixel circuit further comprises compensation units (R1, S2, TFT2, R2). The compensation units (R1, S2, TFT2, R2) comprises a sensing element (R1) which can sense light and convert an optical signal of the OLED into an electrical signal. The compensation units (R1, S2, TFT2, R2) compensate for currents used by the driving units (TFT1, S1, C) to drive the OLED according to the light-emitting brightness of the OLED.

A pixel circuit, a driving method for the pixel circuit, a display panel, and a display device, the pixel circuit includes a selecting module (01), a writing module (02), a driving module (03), and a light emitting element (OLED). When a high-luminance picture needs to be displayed, the selecting module (01) outputs the signal from the first power supply signal terminal (VDDH) to the second node (P2), so that the signal from the first power supply signal terminal (VDDH) drives the light emitting element (OLED) to emit light; when a low-luminance picture is to be displayed, the selecting module (01) outputs a signal from the second power supply signal terminal (VDDL) to the second node (P2), so that the signal from the second power source signal (VDDL) drives the light emitting element to emit light.

A display device includes a substrate having a first pixel region, a second pixel region having a smaller area than the first pixel region, the second pixel region being connected to the first pixel region, and a peripheral region surrounding the first pixel region and the second pixel region, a first pixel and a second pixel respectively at the first and second pixel regions, a first line connected to the first pixel and a second line connected to the second pixel, and a dummy unit in the peripheral region, the dummy unit overlapping with at least one of the first and second lines, the dummy unit being configured to compensate for a difference between a load value of the first line and a load value of the second line, wherein the dummy unit includes at least two sub-dummy units spaced from each other.

Disclosed is a display device, including: a substrate including a pixel area and a peripheral area; pixels provided in the pixel area as a plurality of pixel rows and a plurality of pixel columns; data lines configured to provide a data signal; scan lines configured to provide a scan signal; first power lines configured to provide a power source to the pixel columns; and a second power line connected to the first power lines and disposed in the peripheral area. A scan line connected to an i.sup.th pixel row may apply a scan signal to the i.sup.th pixel row, and a branched line branched from the scan line may apply an initialization signal to a k.sup.th pixel row (k≠i). A branched point of the scan line is disposed between a pixel most adjacent to the second power line of the i.sup.th pixel row and the second power line.

A display module including a substrate having a plurality of pixels, a data line that supplies a data signal to a pixel, a current supply line that supplies electric current to the pixel, a data driving circuit that supplies a data signal to the data line, and a gate driving circuit thereon. The plurality of pixels are arranged in a display area of the substrate, and each of the plurality of pixels includes a light emitting device, a first thin film transistor connected to the data line that supplies the data signal, a second thin film transistor connected to the current supply line, and a capacitor. The light emitting device includes a first electrode layer connected to the second thin film transistor, an organic layer formed on the first electrode layer, and a second electrode layer formed on the organic layer.

A pixel may include a switching transistor connected to a data line and a first node, having a gate electrode connected to a scan line, a sustain transistor connected to a sustain voltage and the first node, having a gate electrode connected to the scan line, a storage capacitor connected to the first node and the second node, a driving transistor connected to the first power source voltage and a third node, having a gate electrode connected to the second node, a compensation transistor connected to the second node and the third node, having a gate electrode connected to a control line, a reset transistor connected to an initializing voltage and the second node, having a gate electrode connected to a reset control line, and an organic light emitting diode including an anode connected to the third node and a cathode connected to the second power source voltage.