Led display apparatus and led pixel error detection method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsTae-hyeun HA, Byeong-cheol HYEON
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Abstract
A light emitting diode (LED) display apparatus, including: a plurality of LED lines including a plurality of LEDs; a plurality of switches connected to respective LED lines among the plurality of LED lines; a controller configured to sequentially supply power to the plurality of LED lines by sequentially turning on and off the plurality of switches; and an LED driver configured to detect an error state of an LED from the plurality of LEDs by estimating current flowing through the plurality of LED lines, and to provide the controller with a result of the detection.
Claims20
A light emitting diode (LED) display apparatus, comprising:
- a plurality of LED lines comprising a plurality of LEDs;
- a plurality of switches connected to respective LED lines among the plurality of LED lines;
- a controller configured to sequentially supply power to the plurality of LED lines by sequentially turning on and off the plurality of switches;
- and
- an LED driver configured to detect an error state of an LED from the plurality of LEDs by estimating current flowing through the plurality of LED lines, and to provide the controller with a result of the detection.
An error detection method of an LED display apparatus having a plurality of LED lines which connect a plurality of LEDs in a row, the method comprising:
- supplying current to one LED line from among a plurality of LED lines;
- measuring a current level which enters through the LED line;
- and
- detecting an LED where an error occurs from among the plurality of LEDs connected to the LED line,
- wherein the supplying, the measuring, and the detecting are carried out sequentially for the plurality of LED lines.
A light emitting diode (LED) display, comprising:
- a plurality of LED lines comprising a plurality of LEDs;
- a plurality of switches connected to a respective LED line among the plurality of LED lines;
- and
- a controller configured to switch the plurality of switches to control a supply of power to the plurality of LED lines, detect a current flowing through the plurality of LED lines, and determine whether an LED from among the respective pluralities of LEDs has an error.
Dependencies are inferred from the claim text.