Method of determining pixel luminance and display device employing the same
AssigneeSamsung Display Co., Ltd.
InventorTAKESHI KATO
Life of this patent
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Abstract
A method of determining a pixel luminance including determining a smoothing reference line between a display region and a non-display region in a display panel, determining a boundary pixel through which the smoothing reference line passes among pixels included in the display region, dividing the boundary pixel into a first pixel region directed toward the display region and a second pixel region directed toward the non-display region based on the smoothing reference line, calculating a smoothing rate corresponding to a ratio of an area of the first pixel region to a total area of the boundary pixel, and determining a dimming luminance of the boundary pixel based on the smoothing rate.
Claims20
A method of determining a pixel luminance, the method comprising:
- determining a smoothing reference line between a display region and a non-display region in a display panel;
- determining a boundary pixel through which the smoothing reference line passes among pixels included in the display region;
- dividing the boundary pixel into a first pixel region directed toward the display region and a second pixel region directed toward the non-display region based on the smoothing reference line;
- calculating a smoothing rate corresponding to a ratio of an area of the first pixel region to a total area of the boundary pixel;
- and
- determining a dimming luminance of the boundary pixel based on the smoothing rate,
- wherein, when the smoothing reference line has a plurality of curvatures, the smoothing reference line is divided into a plurality of sub-smoothing reference lines corresponding to each of the plurality of curvatures, the smoothing rate is calculated based on each of the sub-smoothing reference lines, and luminance dimming of the boundary pixel corresponding to the sub-smoothing reference line is performed based on the smoothing rate.
A display device comprising:
- a display panel including a display region and a non-display region;
- and
- a display panel driving circuit configured to drive the display panel,
- wherein the display panel driving circuit is configured to:
- determine a smoothing reference line between the display region and the non-display region in the display panel;
- determine a boundary pixel through which the smoothing reference line passes among pixels included in the display region;
- divide the boundary pixel into a first pixel region directed toward the display region and a second pixel region directed toward the non-display region based on the smoothing reference line;
- calculate a smoothing rate corresponding to a ratio of an area of the first pixel region to a total area of the boundary pixel;
- determine a dimming luminance of the boundary pixel based on the smoothing rate;
- and
- perform luminance compensation for reflecting the dimming luminance of the boundary pixel on image data, and,
- when the smoothing reference line has a plurality of curvatures, the display panel driving circuit is configured to:
- divide the smoothing reference line into a plurality of sub-smoothing reference lines corresponding to each of the curvatures;
- calculate the smoothing rate based on each of the sub-smoothing reference lines;
- and
- perform luminance dimming of the boundary pixel corresponding to the sub-smoothing reference line based on the smoothing rate
Dependencies are inferred from the claim text.