摘要:
A pixel circuit of an organic EL display includes a driving transistor for transmitting a driving current to an organic EL element. A first capacitor is connected between a gate and a source of the driving transistor, and a second capacitor is connected between the gate thereof and a boosting scan line. A voltage corresponding to a data current from a data line is stored in the first capacitor in response to a select signal from a selecting scan line. The voltage level of the boosting scan line is changed so that the voltage of the first capacitor is changed by coupling of the first and second capacitors. The driving current corresponding to the changed voltage flows to the organic EL element to emit light. As a result, the current flowing to the organic EL element can be controlled using a large data current, and the influence of the parasitic capacitance components of the transistors or data lines can be minimized.
摘要:
A pixel circuit of an organic EL display includes a driving transistor for transmitting a driving current to an organic EL element. A first capacitor is connected between a gate and a source of the driving transistor, and a second capacitor is connected between the gate thereof and a boosting scan line. A voltage corresponding to a data current from a data line is stored in the first capacitor in response to a select signal from a selecting scan line. The voltage level of the boosting scan line is changed so that the voltage of the first capacitor is changed by coupling of the first and second capacitors. The driving current corresponding to the changed voltage flows to the organic EL element to emit light. As a result, the current flowing to the organic EL element can be controlled using a large data current, and the influence of the parasitic capacitance components of the transistors or data lines can be minimized.
摘要:
A display includes a display area having a plurality of data lines for transmitting a data signal representing images and a plurality of pixel circuits coupled to the plurality of data lines. The display also includes a plurality of first signal lines, a data driver coupled to the plurality of first signal lines for time-dividing a first signal corresponding to the data signal and transmitting the time-divided first signal to the plurality of first signal lines, and a demultiplexer for demultiplexing the time-divided first signal transmitted from the plurality of first signal lines to generate the data signal, and applying the data signal to at least two first and second data lines of the plurality of data lines One field has first and second subfields The demultiplexer applies the data signal to the first data line for a first period of the first subfield, and applies the data signal to the second data line for a second period of the second subfield, and the first signal is set corresponding to at least two colors.
摘要:
A display device includes a display area having a plurality of data lines, a plurality of first scan lines, a plurality of second and third scan lines, and a plurality of pixel areas. In addition, the display device includes a first driver, a second driver, and a third driver. At least two pixels sharing a data line and a first scan line are formed in at least one of the pixel areas. At least one of the pixels of a first group among the pixels formed in the at least one pixel area is emitted by a first emission signal in a first field, and at least another one of the pixels of a second group are emitted by a second emission signal in a second field.
摘要:
An organic light emitting display capable of compensating for threshold voltage variations of a driving transistor may include scan and data drivers, pixels, an initial power source unit, a switching unit, a compensating unit, and a timing controller. The scan and data drivers may control current that flows from a first to a second power source via an OLED. The switching unit may selectively couple the initial power source unit to the data driver. The compensating unit may store second data corresponding to a threshold voltage of a driving transistor and may transmit the stored second data to the data driver. The timing controller may transmit the externally supplied first data input to the data driver and may control the scan driver, the data driver, and the compensating unit. The data driver may generate and supply third data signals to the pixels using the first and the second data.
摘要:
An organic light emitting display capable of compensating for threshold voltage variations of a driving transistor may include scan and data drivers, pixels, an initial power source unit, a switching unit, a compensating unit, and a timing controller. The scan and data drivers may control current that flows from a first to a second power source via an OLED. The switching unit may selectively couple the initial power source unit to the data driver. The compensating unit may store second data corresponding to a threshold voltage of a driving transistor and may transmit the stored second data to the data driver. The timing controller may transmit the externally supplied first data input to the data driver and may control the scan driver, the data driver, and the compensating unit. The data driver may generate and supply third data signals to the pixels using the first and the second data.
摘要:
A display device includes a display area having a plurality of data lines, a plurality of first scan lines, a plurality of second and third scan lines, and a plurality of pixel areas. In addition, the display device includes a first driver, a second driver, and a third driver. At least two pixels sharing a data line and a first scan line are formed in at least one of the pixel areas. At least one of the pixels of a first group among the pixels formed in the at least one pixel area is emitted by a first emission signal in a first field, and at least another one of the pixels of a second group are emitted by a second emission signal in a second field.
摘要:
Disclosed is a light emitting display device which provides a light emitting element for controlling the brightness according to the current to each pixel, such as an organic electroluminescent element, and a driving method thereof. The light emitting display device comprises transistors for forming a current mirror, and a pixel structure having first and second scan lines. A time to deselect the second scan signal that is supplied to the second scan line for writing display information on the pixel is earlier than a time to deselect the first scan signal that is supplied to the first scan line for selecting the pixel. As a result, reduction of brightness according to delay of the scan signal is prevented.
摘要:
Disclosed is a light emitting display device which provides a light emitting element for controlling the brightness according to the current to each pixel, such as an organic electroluminescent element, and a driving method thereof. The light emitting display device comprises transistors for forming a current mirror, and a pixel structure having first and second scan lines. A time to deselect the second scan signal that is supplied to the second scan line for writing display information on the pixel is earlier than a time to deselect the first scan signal that is supplied to the first scan line for selecting the pixel. As a result, reduction of brightness according to delay of the scan signal is prevented.
摘要:
A display device for displaying a predetermined color during an interval. The display device includes a plurality of pixels, each said pixel having at least two light emitting elements. Each light emitting element emits a corresponding color within the interval. Some of the light emitting elements of two adjacent said pixels are grouped into a first light emitting element group and the remaining light emitting elements of the two adjacent said pixels are grouped into a second light emitting element group. The first light emitting element group and the second light emitting element group are time-divisionally driven, one of the first and second light emitting element groups being driven within a given period, thereby displaying the predetermined color within the interval. The interval is one frame, and the one frame is divided into two subframes. The first and second light emitting element groups are time-sharingly driven.