Abstract:
A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.
Abstract:
A pixel set may include the following elements: a first diode for emitting first light of first color in a first time period; a second diode for emitting second light of second color in a second time period not overlapping the first time period; a first driving transistor for controlling electrical connection between a first power supply line and the first diode; a second driving transistor for controlling electrical connection between a second power supply line and the second diode; and a data transistor for transmitting a data voltage to a gate electrode of the first driving transistor and a gate electrode of the second driving transistor in response to a scan signal.
Abstract:
In a scan driver and a display device including the same, a first input terminal of a stage receives a scan start signal or an output signal of a previous stage when a first control signal is supplied, a second input terminal of the stage receives one of two clock signals, a third input terminal of the stage receives the other of the two clock signals, and a fourth input terminal of the stage receives a scan start signal or an output signal of a next stage when a second control signal is supplied, and a first power source is outputted from an output terminal of the stage when a first clock signal and a second clock signal are low levels.
Abstract:
A display device and a driving method thereof are disclosed, and the display device includes a first pixel connected to a first data line, a first scan line, and a first power source line, emitting light in a first period, and not emitting light in a second period following the first period; a second pixel connected to a second data line, the first scan line, and the first power source line, not emitting light in the first period, and emitting light in the second period; a current sensor sensing a current flowing through the first power source line in the first period to provide a first sensing current value, and sensing the current flowing through the first power source line in the second period to provide a second sensing current value; and a memory to storing a first block target current value corresponding to the first sensing current value and a second block target current value corresponding to the second sensing current value.
Abstract:
A display device includes a display part including an organic light emitting diode (OLED) connected to a pixel circuit connected to a scan line and a sensing scan line, a signal generator configured to generate at least one display output enable (OE) signal during an image display period; and generate at least one sensing OE signal during a sensing period; and a scan driver including a display scan signal terminal connected to the scan line and a sensing scan signal terminal connected to the sensing scan line, wherein the scan driver is configured to: generate a scan signal for turning on the switching transistor in response to the display OE signal during the image display period; and generate a sensing scan signal for turning on the sensing transistor in response to the sensing OE signal during the sensing period.
Abstract:
A display device and a driving method thereof are disclosed, and the display device includes a first pixel connected to a first data line, a first scan line, and a first power source line, emitting light in a first period, and not emitting light in a second period following the first period; a second pixel connected to a second data line, the first scan line, and the first power source line, not emitting light in the first period, and emitting light in the second period; a current sensor sensing a current flowing through the first power source line in the first period to provide a first sensing current value, and sensing the current flowing through the first power source line in the second period to provide a second sensing current value; and a memory storing a first block target current value corresponding to the first sensing current value and a second block target current value corresponding to the second sensing current value.
Abstract:
Disclosed is a smart watch which may comprise: a display unit including a display panel displaying an image and a panel frame supporting the display panel; a rotating member including a rotating plate provided with recesses on an outer peripheral surface of the rotating plate, a rotating shaft having one end connected to a center of the rotating plate to rotate the rotating plate, and a driving motor coupled with the other end of the rotating shaft; a control unit to control the display unit and the rotating member; and a support frame to support the display unit and accommodate the rotating member and the control unit.
Abstract:
During a period when an emission control signal is supplied to an emission control line connected to the pixel, a change in the voltage level of one node in the pixel, due to first leakage current through a first transistor and a second leakage current through a second transistor of the pixel, is compensated for by third leakage current through a third transistor in the pixel.
Abstract:
A display device includes: a display unit including a plurality of pixels connected with data lines and scan lines with different lengths; a data driver configured to supply a data signal to the data lines; a scan driver configured to supply a scan signal to the scan lines; and a timing controller controlling the data driver to supply the data signal to the data lines at different output timings according to a position of a scan line to which the scan signal is supplied.
Abstract:
A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.