Abstract:
An organic light emitting display device includes a display panel including a pixel at an intersection of a data line, a feedback line, and a scan line; a data driver configured to provide a data signal to the pixel through the data line; and a sensing unit configured to generate a reference voltage based on the data signal, to generate first sensing data based on a sensing current that flows through the feedback line in response to the reference voltage, and to generate second sensing data by digital-converting the reference voltage.
Abstract:
A driving chip and a method of manufacturing the driving chip are disclosed. In one aspect, the method includes forming an inside metal portion of a connection terminal on a base element by patterning a first metal layer; forming a first insulating layer on the inside metal portion of the connection terminal; forming an inside metal portion of a dummy terminal on the first insulating layer by patterning a second metal layer; and forming a bump portion on the inside metal portion of the connection terminal and on a second metal portion of the dummy terminal. The driving chip may suppress warp transformation or pressure mark of the driving chip and thus, the reliability of the driving chip may be improved.
Abstract:
A temperature sensing device includes a first frequency generator for generating a first clock signal having a first frequency that is constant regardless of a temperature; a second frequency generator for generating a second clock signal having a second frequency that is changed according to the temperature; and a data holding unit for outputting a temperature code indicating a number of pulses of the second clock signal counted for a reference time at which a number of pulses of the first clock signal reaches a predetermined threshold. The temperature sensing device does not require a reference clock signal input from the outside and is insensitive to the change in the process, thereby being capable of improving the performance of the temperature sensing device.
Abstract:
An organic light emitting display device includes a display panel including a pixel at an intersection of a data line, a feedback line, and a scan line; a data driver configured to provide a data signal to the pixel through the data line; and a sensing unit configured to generate a reference voltage based on the data signal, to generate first sensing data based on a sensing current that flows through the feedback line in response to the reference voltage, and to generate second sensing data by digital-converting the reference voltage.
Abstract:
An organic light emitting diode (OLED) display and a method of driving the same are provided. The OLED display includes a display panel including data lines, scan lines, and pixels that are connected to a corresponding data line and a corresponding scan line; a signal controller that generates display gamma control data corresponding to a display grayscale of an image source signal according to previously stored gamma curve information and that generates offset gamma control data corresponding to a position of each pixel according to threshold voltage deviation information; a scan driver that supplies scan signals to the scan lines; and a data driver that generates data signals according to the display gamma control data and the offset gamma control data and that supplies signals to the data lines.
Abstract:
A touch screen panel is disclosed. In one aspect, the touch screen panel includes a plurality of first touch electrodes, a plurality of second touch electrodes, and an electrode driving unit. The second touch electrodes cross the first touch electrodes. The electrode driving unit applies a driving signal including a plurality of driving pulses to the first touch electrodes. The electrode driving unit changes the width of each of the driving pulses while maintaining the frequency of the first driving pulses.
Abstract:
An organic light emitting display device includes a display panel including a pixel at an intersection of a data line, a feedback line, and a scan line; a data driver configured to provide a data signal to the pixel through the data line; and a sensing unit configured to generate a reference voltage based on the data signal, to generate first sensing data based on a sensing current that flows through the feedback line in response to the reference voltage, and to generate second sensing data by digital-converting the reference voltage.
Abstract:
An organic light emitting display device includes a display panel including a pixel at an intersection of a data line, a feedback line, and a scan line; a data driver configured to provide a data signal to the pixel through the data line; and a sensing unit configured to generate a reference voltage based on the data signal, to generate first sensing data based on a sensing current that flows through the feedback line in response to the reference voltage, and to generate second sensing data by digital-converting the reference voltage.
Abstract:
A display device, and an optical compensation system and an optical compensation method thereof. A display device including a display panel including pixels; and a display driving circuit for driving the display panel and including: a storage unit for storing defect pixel information indicating which of the pixels are detected as defect pixels based on a brightness trend line of the pixels, and for storing compensation parameters regarding the defect pixels; and a brightness compensation unit for converting image data corresponding to the defect pixels according to the defect pixel information and the compensation parameters.
Abstract:
A pixel circuit according to example embodiments includes a scan switch connected between a data line and a first node, a storage capacitor, an organic light emitting diode, a driving transistor connected to a first power voltage and configured to generate a driving current, a first control switch connected between the driving transistor and a second node and configured to be turned on during a first sensing period based on a first control signal, a second control switch connected between the second node and an anode of the organic light emitting diode and configured to be turned on during a second sensing period based on a second control signal, and a sensing switch connected between the data line and the second node and configured to be turned on based on a sensing control signal.