Abstract:
A driver includes first to Mth stages, where a first input signal and a second input signal are input to each of the first to Mth stages, and each of the first to Mth stages outputs a stage output signal, a first carry signal, and a second carry signal, where M is a natural number greater than or equal to 2. The first carry signal and the second carry signal output from a kth stage are the first input signal and the second input signal, which are input to a (k+1)th stage, respectively, where k is a natural number greater than or equal to 1 and less than M, and the first input signal and the second input signal, which are input to a first stage, are a first start signal and a second start signal which are alternately changed for predetermined frame times, respectively.
Abstract:
A display panel of an organic light emitting diode (OLED) display device having a display region includes a plurality of first pixels located at an upper half of the display region, a plurality of second pixels located at a lower half of the display region, a plurality of first data lines extending in a first direction, and coupled to the plurality of first pixels, a plurality of second data lines extending in the first direction, disposed alternately with the plurality of first data lines along a second direction crossing the first direction, and coupled to the plurality of second pixels, and a demultiplexing circuit configured to selectively couple a plurality of data channels of a data driver of the OLED display device to the plurality of first data lines or the plurality of second data lines.
Abstract:
A pixel of a display panel includes a storage capacitor, at least one scan transistor to transfer first and second voltages to ends of the storage capacitor in response to a scan signal, a driving transistor to generate a driving current based on a difference between the first voltage and the second voltage stored in the storage capacitor, at least one emission transistor to selectively provide the driving current to an organic light emitting diode in response to an emission control signal, and the organic light emitting diode to emit light, wherein the first voltage is a sum of a data voltage and a pixel deviation compensation voltage for compensating a threshold voltage deviation between pixels included in the display panel, and wherein the second voltage is a panel deviation compensation voltage for compensating a threshold voltage deviation between display panels manufactured by a same process for the display panel.
Abstract:
A display device includes a display panel including a first pixel, a second pixel, and a third pixel, a scan driver configure to provide a scan signal to the first through the third pixels, a data driver which provides a data signal to the first through the third pixels, a reference voltage generator which provides a first reference voltage that compensates a degradation of a first driving transistor, a second reference voltage that compensates a degradation of a second driving transistor, and a third reference voltage that compensates a degradation of a third driving transistor, and a timing controller which generates a control signal that controls the scan driver, the data driver, and the reference voltage generator.
Abstract:
A pixel circuit including an organic light emitting diode (OLED), a first transistor, a first capacitor, a second transistor, a second capacitor and a third transistor is disclosed. In one aspect, the first transistor controls the amount of current flowing from a first power source to a second power source via the OLED, corresponding to a voltage at a first node. The first capacitor has a first terminal connected to a data line. The second transistor is connected between a second terminal of the first capacitor and a second node. The second capacitor is connected between the second node and the first node. The third transistor is connected between a fixed voltage source and the second terminal of the first capacitor, and has a turn-on period non-overlapping with that of the second transistor.
Abstract:
An organic light emitting display includes: a display panel including pixels at crossing regions of data lines and scan lines; a scan driver configured to divide one frame into a plurality of sub-fields, to divide each of the subfields into p (p is a positive integer of 2 or more) periods, and to supply scan signals to the scan lines; and a data driver configured to supply data voltages to the data lines concurrently with supply of respective scan signals, wherein a gray scale voltage from among (P+1) gray scale voltages is supplied as at least one of the data voltages.
Abstract:
An organic light emitting diode (OLED) display device includes a plurality of pixels each having a pixel circuit and an organic light emitting diode coupled to the pixel circuit. The OLED display device includes a scan driver which is configured to supply a scan signal to the scan lines and to supply an emission control signal to an emission control line commonly coupled to the pixels. The OLED display device also includes repair lines and repair circuits coupled to the repair lines. The repair circuits each have an output terminal coupled to an organic light emitting diode in corresponding pixel. A switching unit is configured to allow output lines of the data driver to be selectively coupled to the repair lines or the data lines.
Abstract:
An organic light emitting display including a repair circuit is disclosed. In one aspect the organic light emitting diode (OLED) display includes a pixel unit having a plurality of pixels positioned at the intersection of scanning lines, data lines, and power lines, The OLED display further includes an organic light emitting diode OLED connected to the pixel circuit, and repair lines disposed in parallel with data lines and repair circuits connected to the repair lines and the power lines. The OLED display further includes a switching unit for selectively connecting output lines of the data driving unit to the repair lines or the data lines.
Abstract:
An emissive display device includes: a light emitting diode; an n-type driving transistor comprising a first driving gate electrode, a first electrode receiving a driving voltage, a second electrode transferring an output current to the anode, and a second driving gate electrode; a second transistor connected to a data line; a third transistor configured to connect the first electrode and the first driving gate electrode of the driving transistor; a storage capacitor comprising a first storage electrode and a second storage electrode connected to the first driving gate electrode; a ninth transistor transferring an overlapping electrode voltage to the second driving gate electrode; an overlapping electrode voltage line crossing the data line and receiving the overlapping electrode voltage; and a shielding electrode at an intersection of the data line and the overlapping electrode voltage line and between the data line and the overlapping electrode voltage line.
Abstract:
An emission driver includes a plurality of stages. A stage of the plurality of stages receives a start signal, a first clock signal, a second clock signal, a protection signal, a first gate power voltage and a second gate power voltage and outputs an emission signal. The stage of the plurality of stages includes a pull-up switching element connected between a first gate power voltage terminal which receives the first gate power voltage and an emission signal output terminal which outputs the emission signal, a pull-down switching element connected between a second gate power voltage terminal which receives the second gate power voltage and the emission signal output terminal and a protection switching element which applies the first gate power voltage to a control electrode of the pull-down switching element in response to the protection signal.