Safety driving system of display device and safety driving method of display device
A safety driving system of a display device includes a display panel including at least one conductive detection line, the conductive detection line extending in a predetermined area of the display panel and being configured to detect voltage variation according to damage in the predetermined area, a panel detector configured to apply a reference voltage to one end of the detection line, to receive an output voltage corresponding to the reference voltage through the detection line from another end of the detection line, to compare the received output voltage with a predetermined normal voltage range, and to generate and output a detection result signal, and a controller configured to provide a detection set value for driving the panel detector and to interrupt the driving of the display panel when the output detection result signal indicates that the display panel is damaged.
1. A safety driving method of a display device including a display panel with at least one conductive detection line detecting voltage variation according to damage to the display panel in a predetermined area, the method comprising:
applying a reference voltage to one end of the detection line by a panel detector;
receiving an output voltage corresponding to the reference voltage through the detection line from another end of the detection line by the panel detector;
comparing the received output voltage with a predetermined normal voltage range to generate a detection result signal by the panel detector; and
interrupting a driving of the display panel when the detection result signal indicates damage to the display panel by a controller,
wherein the panel detector and the controller are included in a driving IC, the driving IC being within the display panel to operate the display panel,
wherein at least a portion of the detection line extends in parallel to an edge of the driving IC, and
wherein the predetermined area is an area in close proximity to the driving IC driving the display panel.
2. The safety driving method of a display device of claim 1 , further comprising, before applying the reference voltage to the detection line, pre-setting detection set values, the detection set values including the reference voltage, the normal voltage range, an operation period, a driving interval of the panel detector, and an analysis of the detection result signal.
3. The safety driving method of a display device of claim 1 , wherein interrupting the driving of the display panel includes stopping operation of the driving IC driving the display panel, soft-resetting the operation of the driving IC, or interrupting driving of a DC-DC converter in the driving IC.
4. The safety driving method of a display device of claim 1 , wherein comparing the received output voltage with the predetermined normal voltage range includes generating the detection result signal by logic-combining a first result value obtained by comparing the received output voltage with a highest voltage value of the predetermined normal voltage range and a second result value obtained by comparing the received output voltage with a lowest voltage value of the predetermined normal voltage range.
5. The safety driving method of a display device of claim 1 , wherein generating the detection result signal includes:
removing noise of a coupling factor influencing the received output voltage; and
removing static electricity generated outside.