摘要:
The present disclosure provides a pixel circuit, its driving method, an OLED display panel and an OLED display device. The pixel circuit includes row pixel units each including subpixel units. The row pixel unit includes an auxiliary compensating circuit, which is configured to generate a switching control signal inputted to a subpixel driving circuit according to a scanning signal from a gate driving circuit, and generate a compensating control signal inputted to the subpixel driving circuit according to a control signal from the gate driving circuit. The subpixel driving circuit is configured to receive a data voltage from a data line accordance to the switching control signal, control a driving transistor to drive an OLED to emit light according to the data voltage, and compensate for a threshold voltage of the driving transistor according to the compensating control signal when the driving transistor drives the OLED to emit light.
摘要:
A method and device for image conversion from RGB signals into RGBW signals, after converting the RGB luminance input values into RGBW luminance output values, determine color-cast-removed RGBW luminance output values respectively, according to a position relationship between RGBW color coordinate values to which the RGBW luminance output values correspond respectively and a predetermined actual color coordinate value of a color having monochromatic color cast among RGBW in a chromaticity diagram, and thereafter convert the color-cast-removed RGBW luminance output values into corresponding RGBW output signals respectively and output the same. By means of the above method provided in the present disclosure, color having monochromatic shifting among RGBW can be compensated back to the expected RGBW color coordinates and luminance values, so the problems of color gamut deviation and color distortion caused by RGBW monochromatic color cast are eliminated, color gamut of the displayed image is more accurate.
摘要:
The present disclosure provides an organic light-emitting diode (OLED) display apparatus, including a plurality of subpixels, each of which includes an anode, a cathode and a light-emitting layer. The OLED display apparatus further includes at least one photovoltaic conversion module arranged in correspondence with the subpixel, and configured to receive an optical signal from the light-emitting layer of the corresponding subpixel and convert the received optical signal into an electric signal. A testing terminal is extracted from the photovoltaic conversion module and configured to acquire the electric signal converted by the photovoltaic conversion module.
摘要:
The present disclosure discloses an image conversion method for converting RGB signal to RGBW signal and an apparatus thereof. A substitution rate of a W luminance output value of respective pixels in each frame is determined according to RGB luminance input values of the respective pixels in each frame, and accumulated proportions of RGB luminance output values and the W luminance output value in RGBW luminance output values of the respective pixels within a preset time before each frame. The RGBW luminance output values of the respective pixels in each frame is determined according to the determined substitution rate of the W luminance output value and the RGB luminance input values of the respective pixels in each frame. In this way, the RGBW luminance output values of the respective pixels in the present frame can be adjusted according to a utilization rate of respective sub-pixels in the respective pixels within a period of time before each frame, so as to substantially maintain working lives of the respective sub-pixels in the respective pixels uniform as far as possible, and to further improve a service life of an entire display.
摘要:
The present invention discloses a signal conversion device, a signal conversion method and a display device. The signal conversion device includes a gamma conversion unit, a brightness detection unit and a brightness processing unit, wherein the gamma conversion unit is used for performing a gamma conversion process on RGB input signals and generating RGB brightness input values; the brightness detection unit is used for generating a W brightness input value based on RGB proportional coefficients and the RGB brightness input values; and the brightness processing unit is used for generating RGBW output signals based on the RGB proportional coefficients, the RGB brightness input values and the W brightness input value. With the present invention, the brightness of a displayed image can be increased without increasing the power consumption, so that the contrast of the displayed image is increased, and the display quality of the image is also improved.
摘要:
A method for adjusting a gamma voltage of an OLED display device, including; acquiring a test picture pre-stored in the OLED display device, and extracting a first piece of data information on the test picture; comparing the first piece of data information with a pre-stored second piece of data information on the test picture before the OLED display device is aged, analyzing a comparison result, and obtaining the aging coefficient of the OLED display device; acquiring a set of gamma voltage values corresponding to the aging coefficient, outputting the set of gamma voltage values to a gamma integrated circuit of the OLED display device, and completing the adjustment of the gamma voltage.
摘要:
The present invention provides a display substrate and a display device, belonging to the field of display technology. In view of the problem that the energy-saving techniques of an existing liquid crystal display have yet to be further developed and improved, the present invention provides the display substrate comprising photoelectric conversion element for converting light energy into electric energy and the display device including the above display substrate. According to the display substrate and the display device of the present invention, renewable light energy is converted into electric energy by using the photoelectric conversion elements to supply power to the display device, so that the energy consumption of an external power supply by the display device may be reduced, and further, non-renewable resources may be favorably saved.