摘要:
A technology for reducing the so-called “phosphor burn-in” phenomenon where the variation of luminance arises by reducing display luminance of a certain pixel caused by deterioration in a display apparatus constituted by an organic electro luminescence element is provided. In the display apparatus, when displaying an image acquired by an image acquiring unit, luminance substantially same as average luminance of the acquired image is set to a non-display area where the image is not displayed.
摘要:
When an input detection unit has detected that no user operation has been performed to an organic EL display apparatus for a predetermined period of time or when a processing detection unit has detected that a predetermined processing is being performed, the input detection unit or the processing detection unit outputs an instruction to a reference voltage adjusting unit to modify a reference voltage referenced by a DAC unit upon conversion to an analog output signal.
摘要:
When an input detection unit has detected that no user operation has been performed to an organic EL display apparatus for a predetermined period of time or when a processing detection unit has detected that a predetermined processing is being performed, the input detection unit or the processing detection unit outputs an instruction to a reference voltage adjusting unit to modify a reference voltage referenced by a DAC unit upon conversion to an analog output signal.
摘要:
A luminance control method for an organic EL display comprises a first step of calculating a luminance accumulation value for each screen on the basis of a video input signal, and a second step of controlling the amplitude of the video input signal on the basis of the luminance accumulation value calculated in the first step and feeding to the organic EL display the video signal whose amplitude has been controlled.
摘要:
A color space correction circuit in a display apparatus comprises: means for holding optimal R, G and B correction values at chromaticity coordinate points corresponding to a white, primary colors and complementary colors, respectively, in a color reproduction region of a display on a chromaticity diagram; means for connecting the respective chromaticity coordinate points corresponding to the primary colors and the complementary colors to the chromaticity coordinate point corresponding to the white in the color reproduction region of the display on the chromaticity diagram, thereby dividing the color reproduction region of the display into a plurality of areas and judging to which area the chromaticity coordinate points corresponding to input signals belong; and means for correcting R, G and B values for the input signals based on optimal R, G and B correction values corresponding to the chromaticity coordinate points that correspond to three vertexes of the area to which the chromaticity coordinate points corresponding to the input signals are judged to belong, and based on the R, G and B values for the input signals.
摘要:
A technology for reducing the so-called “phosphor burn-in” phenomenon where the variation of luminance arises by reducing display luminance of a certain pixel caused by deterioration in a display apparatus constituted by an organic electro luminescence element is provided. In the display apparatus, when displaying an image acquired by an image acquiring unit, luminance substantially same as average luminance of the acquired image is set to a non-display area where the image is not displayed.
摘要:
An uneven display correction method including a first step of dividing a display area of a display panel into a plurality of unit areas, the first step setting one arbitrary unit area among the unit areas at a reference area, the first step previously determining a value as a correction parameter in each unit area, the value corresponding to a difference between a light-emission start gradation level of the unit area and the light-emission start gradation level of the reference area; and a second step of correcting an input video signal based on the correction parameter determined in each unit area.
摘要:
The invention provides an organic LED display device of the digital drive type which has a display panel comprising a plurality of pixels 51. Each of the pixels 51 comprises an organic EL element 50, a drive transistor TR2 for effecting or interrupting the passage of current through the EL element 50 in response to the input of an on/off control signal, a write transistor TR1 to be brought into conduction upon receiving scanning voltage applied thereto from a scanning driver, a capacitance element C to be supplied with data voltage from a data driver by the write transistor TR1 conducting, and a comparator 9 for comparing a predetermined ramp voltage with the output voltage of the capacitance element C and supplying the result of comparison to the drive transistor TR2 as the on/off control signal.
摘要:
A luminance control method for an organic EL display comprises a first step of calculating a luminance accumulation value for each screen on the basis of a video input signal, and a second step of controlling the amplitude of the video input signal on the basis of the luminance accumulation value calculated in the first step and feeding to the organic EL display the video signal whose amplitude has been controlled.
摘要:
An uneven display correction method including a first step of dividing a display area of a display panel into a plurality of unit areas, the first step setting one arbitrary unit area among the unit areas at a reference area, the first step previously determining a value as a correction parameter in each unit area, the value corresponding to a difference between a light-emission start gradation level of the unit area and the light-emission start gradation level of the reference area; and a second step of correcting an input video signal based on the correction parameter determined in each unit area.