DISPLAY APPARATUS AND METHOD OF DRIVING THE SAME
First Claim
1. A display apparatus comprising:
- a display panel comprising a plurality of pixels, wherein the display panel displays an image;
a backlight unit comprising a first light source which emits a first light in an infrared light range, the backlight unit providing the first light to the display panel;
a backlight control circuit which controls a brightness of the first light source;
a plurality of sensors which senses an external signal and outputs a plurality of first sensing signals;
a read-out circuit which stores the plurality of first sensing signals and outputs a plurality of second sensing signals during a predetermined time period; and
a sensor auxiliary circuit which receives the plurality of second sensing signals, compares a maximum value and a minimum value in the plurality of second sensing signals and provides a brightness control signal to the backlight control circuit based on the compared difference to control the brightness of the first light source.
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Accused Products
Abstract
A display apparatus includes a display panel, a backlight unit, a backlight control circuit, sensors, a read-out circuit and a sensor auxiliary circuit. The display panel includes pixels and displays an image. The backlight unit includes a first light source which emits a first light in a infrared light range. The backlight control circuit controls a brightness of the first light source. The sensors sense an external signal and outputs first sensing signals. The read-out circuit outputs the first sensing signals as second sensing signals. The sensor auxiliary circuit compares a maximum value and a minimum value of the second sensing signals and provides a brightness control signal to the backlight control circuit based on the compared difference to control the brightness of the first light source.
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Citations
20 Claims
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1. A display apparatus comprising:
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a display panel comprising a plurality of pixels, wherein the display panel displays an image; a backlight unit comprising a first light source which emits a first light in an infrared light range, the backlight unit providing the first light to the display panel; a backlight control circuit which controls a brightness of the first light source; a plurality of sensors which senses an external signal and outputs a plurality of first sensing signals; a read-out circuit which stores the plurality of first sensing signals and outputs a plurality of second sensing signals during a predetermined time period; and a sensor auxiliary circuit which receives the plurality of second sensing signals, compares a maximum value and a minimum value in the plurality of second sensing signals and provides a brightness control signal to the backlight control circuit based on the compared difference to control the brightness of the first light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of driving a display apparatus, comprising:
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receiving a plurality of first sensing signals corresponding to an external signal; storing the plurality of first sensing signals and outputting a plurality of second sensing signals at a predetermined time; comparing a difference between a maximum value and a minimum value of the plurality of second signals with a reference value; and controlling a brightness of an infrared-light light source in the backlight unit based on the compared difference. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification