Display apparatus and driving pulse control method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorByung-Cheol Yu
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Abstract
An apparatus and method is disclosed for controlling a display driving pulse to drive an LED display. In one embodiment, an RGB signal is received and a period during which all the LEDs are switched off is detected. Also, the period during which an image is not being displayed is also detected. The driving time of each LED is then extended by the detected periods so that the lighting time of the LED is extended, and brightness of the display as a whole is improved using the LED system.
Claims38
A device for driving at least one light emitting diode, comprising:
- an LED driver for providing a driving signal for controlling ON/OFF switching of the light emitting diode;
- and
- a period detector for detecting a period during which the driving signal is off, and outputting the detected period to the LED driver,
- wherein the LED driver is configured to add the period detected to a diode turn-on driving signal for the duration of the period amount.
A display apparatus having at least one light emitting diode, the display apparatus comprising:
- an LED driver for outputting a driving signal for controlling ON/OFF switching of each light emitting diode;
- and
- a current detector for detecting an amount of current flowing through each light emitting diode, wherein the LED driver is configured to receive detected data from the current detector and control the amount of current so that current flow through the light emitting diode is constant.
A method of controlling a driving pulse for a display apparatus having at least one light emitting diode adapted to display an image, the method comprising:
- detecting a period during which all the light emitting diodes are turned off;
- and
- adding the detected period to a turn-on driving signal of the light emitting diode;
- wherein the turn-on driving signal of each diode overlap each other by the detected period.
A method of controlling a driving pulse for a light emitting diode array, the method comprising the steps of:
- outputting at least one driving signals for controlling ON/OFF switching of each light emitting diode within the array;
- detecting a period during which all driving signals applied to the light emitting diode array are turned off;
- adding the detected period to a diode turn-on driving signal;
- and
- applying the diode turn-on driving signal to each light emitting diode within the array so that the signals through the diodes in the array overlap by the detected period.
A method of controlling a driving pulse for a display apparatus having a light emitting diode array adapted to display an image, the method comprising the steps of:
- outputting one or more driving signals for controlling ON/OFF switching of each light emitting diode within the array;
- detecting an amount of current flowing through each light emitting diode;
- and
- controlling the amount of current so that the current flowing through the light emitting diode array is constant.
A computer readable medium having stored thereon instructions for controlling a driving pulse for a display apparatus having a light emitting diode array adapted to display an image, comprising:
- a set of instructions for outputting one or more driving signals for controlling ON/OFF switching of each light emitting diode within the array;
- a set of instructions for detecting an amount of current flowing through each light emitting diode;
- and
- a set of instructions for controlling the amount of current so that the current flowing through the light emitting diode array is constant.
Dependencies are inferred from the claim text.