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 in that the first light emitting element group is driven in one of the two subframes, and the second light emitting element group is driven in the other one of the two subframes.
摘要:
In a level shifter, first and second PMOS transistors are connected in series between first and second power sources for supplying first high level and low level voltages, respectively, and a capacitor is formed between a contact point of the first and second transistors and the second transistor's gate. A third PMOS transistor is diode-connected and connected between the first and second transistors' gates. When a second low level voltage is input to the first transistor's gate, a second high level voltage is output to the contact point according to an on resistance ratio of the first and second transistors. When a first high level voltage is input to the first transistor's gate, the second transistor is bootstrapped according to the voltage charged to the capacitor so that a first low level voltage is substantially output to the contact point. Since the level shifter outputs voltages substantially corresponding to voltages which the first and second power sources supply respectively, a range of the output voltage may be extended.
摘要:
An image display device having a reduced data programming time. The image display device includes a plurality of pixel circuits, each said pixel circuit for displaying an image which corresponds to a data current, which is applied thereto. The image display device also includes a plurality of data lines for transmitting the data currents to the pixel circuits, and a plurality of scan lines for transmitting select signals to the pixel circuits. A driver applies a precharge voltage to a corresponding one of the data lines in response to a first control signal, and supplies the corresponding one of the data currents to the corresponding one of the data lines in response to a second control signal.
摘要:
An inverter is capable of improving the reliability of driving. The inverter includes a first transistor and a second transistor. The first transistor is coupled between a first power source and an output terminal of the inverter, and has a first gate electrode coupled to a first input terminal of the inverter and a second gate electrode coupled to a third power source. The second transistor is coupled between the output terminal and a second power source, and has a first gate electrode coupled to a second input terminal of the inverter and a second gate electrode coupled to the third power source.
摘要:
An emission control circuit for controlling emission of R, G, B EL elements and method for driving an organic light emitting diode display using the same. An emission control signal generating circuit of a flat panel display includes a plurality of pixels. Each pixel includes a plurality of EL elements, and emission of the elements is controlled by emission control signals. The circuit includes a first signal generating device for generating one of the emission control signals, and a plurality of second signal generating devices for generating other ones of the emission control signals using an output signal of the first signal generating device and an external control signal. The first signal generating device may include a shift register. Each of the plurality of second signal generating devices may include a NAND gate using the external signal and the external control signal, or an inverted signal thereof, as two inputs.
摘要:
An image display device capable of reducing power consumption. The image display device includes: a position determining unit for determining positions of horizontal lines to which data input to a timing controller are to be supplied; a look-up table (LUT) for storing pre-emphasis voltage information corresponding to the positions of the horizontal lines; the timing controller for transmitting the data and the pre-emphasis voltage information to a data driver; a pre-emphasis voltage generator for generating a pre-emphasis voltage to correspond to the pre-emphasis voltage information from the data driver; and the data driver for supplying the pre-emphasis voltage to data lines in a partial period of a horizontal period and for supplying a data signal in a remaining period of the horizontal period.
摘要:
A display device includes a demultiplexer. The demultiplexer programs time-divided and sequentially input data currents to at least two signal lines. The demultiplexer includes first and second sample/hold circuits for alternately sampling data currents and holding sampled data corresponding to the sampled data, and third and fourth sample/hold circuits for respectively sampling the sampled data held by the first and second sample/hold circuits and programming the current which correspond to the sampled data to the two signal lines.
摘要:
An organic electroluminescent display and a demultiplexer, wherein the organic electroluminescent display comprises: a plurality of pixels including a plurality of sub-pixels and displaying images corresponding to a first data current; a plurality of scan lines transmitting a scan signal to the plurality of pixels; a plurality of first data lines transmitting the first data current to the plurality of pixels; a scan driver outputting the scan signal to the plurality of scan lines; a demultiplexer comprising a plurality of sample-and-hold demultiplexing circuits; and a data driver outputting a second data current to a plurality of second data lines, wherein the demultiplexing circuit transmits the first data current, obtained by demultiplexing the second data current in sample/hold method, to the first data lines, wherein a pre-charge voltage corresponding to the second data current is previously transmitted to the first data lines before the first data current is transmitted to the first data lines.
摘要:
A driving device for a light emitting display, which includes a plurality of scan lines for transferring a selection signal, comprises: a first driver for shifting a first signal having a first integer multiple of first pulses by a first period, and sequentially outputting the first signal; a second driver for shifting a second signal having a second pulse by a second period, and sequentially outputting the second signal; and a third driver for sequentially outputting the selection signal having a second integer multiple of third pulses corresponding to at least one of the first integer multiple of first pulses, and a fourth pulse corresponding to the second pulse, in response to the first signal and the second signal.
摘要:
A display device including a plurality of data lines for transmitting a data current corresponding to image signals, a plurality of scan lines for selecting select signals, and a plurality of pixel circuits coupled to the data lines and the scan lines. The display device includes a data driver for supplying the data current corresponding to the image signals, and a demultiplexer including first and second sample/hold circuit groups having input terminals coupled to the data driver. Each of the sample/hold circuit groups includes at least two sample/hold circuits. The display device also includes a switch unit for switching between output terminals of the first and second sample/hold circuit groups and the data lines, and a scan driver for supplying the select signals to the scan lines.