摘要:
The present invention relates to a pixel circuit, a pixel, and an AMOLED (Active Matrix Organic Light-Emitting Diode) display device comprising the pixel and a driving method thereof. The pixel circuit (112) comprises a power supply circuit (1121), a basic circuit (1122) and a compensation circuit (1123), which are sequentially connected. The power supply circuit (1121) is connected to a first power supply ELVDD to supply power to the basis circuit (1122). The compensation circuit (1123) is connected to a second power supply ELVSS1 and a third power supply ELVSS2 respectively, for providing difference values compensating for a voltage and current of an OLED (Organic Light-Emitting Diode). The pixel comprises an OLED and the pixel circuit. The AMOLED display device comprises the pixel circuit. With this solution, by compensating for a difference between a threshold voltage and a power supply voltage of a transistor, the response characteristics of the AMOLED may be improved to generate light of a same brightness, thereby meeting requirements on image uniformity and consistency of an AMOLED.
摘要:
A data drive circuit, a drive method for data drive circuit and an organic light emitting display that has the data drive circuit. The data drive circuit has a data signal multiplexing structure, and also comprises a power source line (50) for connecting to a power source (Vref) and second transistors (T2' ... Tm') connected to the power source line (50), the second transistors (T2' ... Tm') have source electrodes electrically connected to the power source line (50), gate electrodes electrically connected to the same line (Sel_1) of the control lines, and drain electrodes respectively electrically connected to different lines (Dj') of the signal lines at a connection point between a first transistor (T1 ... Tm) and the display area (40). By connecting a compensation power source (Vref) to the signal lines (D1' ... Dm') for initializing the pixel units (11 ... mm), the influence of stray capacitance in the pixel units (11 ... mm) is alleviated, thereby effectively improving the response properties and display properties of an organic light emitting display apparatus equipped with this data drive circuit.
摘要:
An AMOLED pixel unit (20) and a driving method therefore, as well as an AMOLED display device including the AMOLED pixel unit (20), are disclosed. The AMOLED pixel unit (20) includes a pixel circuit (22) and an organic light-emitting diode (24) connected to the pixel circuit (22). The pixel circuit (22) includes a capacitor (Cs), an initialization unit connected to one terminal of the capacitor (Cs), a data writing unit and a light-emitting control unit. The other terminal of the capacitor (Cs) is connected to a first scan control line (Sn1). The initialization unit is connected to a second scan control line (Sn2). The data writing unit is connected to a third scan control line (Sn3) and a data line (Dm). The light-emitting control unit is connected to a fourth scan control line (Sn4). The AMOLED pixel unit (20) can effectively avoid an impact of leak currents or threshold voltage differences on the capacitors (Cs), allowing uniform light brightness of the AMOLED display device.
摘要:
A pixel circuit (20) and a method therefor, and an organic light-emitting display. The pixel circuit (20) initializes an anode of an organic light-emitting diode (OLED) by means of a first thin-film transistor (M1), a second thin-film transistor (M2) and a seventh thin-film transistor (M7), and initializes a gate and a drain of a sixth thin-film transistor (M6) serving as a driving element by means of the first thin-film transistor (M1), a third thin-film transistor (M3) and the seventh thin-film transistor (M7) so that the service life of the OLED and the service life of the sixth thin-film transistor (M6) are prolonged. The current output by the sixth thin-film transistor (M6) serving as a driving element is irrelevant to the threshold voltage of the sixth thin-film transistor (M6) and the impedance of the power wiring, and thus uneven brightness caused by deviation of the threshold voltage of the thin-film transistor and different impedances of the power wiring can be avoided. Therefore, for the organic light-emitting display that adopts the pixel circuit (20) and the driving method therefor, the service life is prolonged and the display quality is improved.
摘要:
Provided are a pixel structure and an organic light-emitting display using same. The pixel structure comprises multiple pixels, each pixel comprises multiple sub-pixels, at least one pixel forms a pixel unit, pixel units that are longitudinally adjacent are arranged in a vertical mirror manner, and/or pixel units that are horizontally adjacent are arranged in a horizontal mirror manner. Through a reasoned structure of pixel arrangement and by deposition of sub-pixels of adjacent pixels through a shared mask aperture, the area of mask apertures can be increased during deposition, the difficulty of manufacture with the mask technique is reduced and the difficulty of the deposition process is also reduced. No gap needs to be reserved when the sub-pixels of the adjacent pixels of the mask are deposited, and genuinely high PPI can be achieved while maintaining a high aperture ratio. In addition, mask strength is increased, thus preventing deformation during use, improving product yield, increasing service life and reducing costs.
摘要:
The present invention provides a scanning driver and an organic light-emitting display using the same. The scanning driver comprises a plurality of cascaded structures receiving signals from a first timing clock line (CK1) and a second timing clock line (CK2) with opposite phases, the cascaded structures successively generating output signals (i.e., scanning signals), wherein each of the cascaded structures comprises: a first transistor, connected to a starting signal line or to a scanning output line of a previous cascaded structure; a second transistor, connected to the second timing clock line and to the scanning output line; a third transistor connected to a high-level power supply VGH; a fourth transistor, connected to a low-level power supply VGL and to an output terminal of the third transistor; a fifth transistor, connected to a high-level power supply VGH and to a scanning output line; and a first capacitor, connected between an output terminal of the first transistor and the scanning output line. Arranging a first capacitor C1 between the output terminal of M1 and the scanning output line prevents slight-ON of M2, thus reducing the reverse current at the scanning driver and reducing the power consumption.