Display apparatus
View Patent ↗A display apparatus includes a display panel that displays an image in response to a data voltage, a data driving unit that outputs the data voltage in response to a driving signal, and a printed circuit board that outputs the driving signal and that has a static electricity discharge circuit. The discharge circuit discharges high-voltage static electricity, which is introduced into the data driving unit, to ground. Accordingly, the display apparatus prevents the data driving unit from being damaged by the high-voltage static electricity.
1. A display apparatus comprising:
a display panel module that displays an image; and
a receptacle that receives the display panel module,
wherein the display panel module comprises:
a display panel that displays the image in response to a data voltage and a gate voltage;
a data driving unit that receives first and second driving signals and outputs the data voltage in response to the first driving signal;
a gate driving unit that receives the second driving signal from the data driving unit and outputs the gate voltage in response to the second driving signal; and
a printed circuit board comprising a discharge circuit that outputs the first and second driving signals to the data driving unit and discharges static electricity introduced into the data driving unit to the receptacle.
2. The display apparatus of claim 1 , wherein the data driving unit comprises:
abase film; and
a driving chip mounted on the base film.
3. The display apparatus of claim 2 , wherein the printed circuit board comprises:
a first driving interconnection transferring the first driving signal to the driving chip; and
a second driving interconnection transferring the second driving signal to the gate driving unit through the base film,
wherein the discharge circuit electrically connects the first driving interconnection to a ground.
4. The display apparatus of claim 3 , wherein the static electricity introduced into the data driving unit is discharged to the receptacle through the first driving interconnection and the discharge circuit.
5. The display apparatus of claim 4 , wherein the receptacle serves as a ground.
6. The display apparatus of claim 5 , wherein the data voltage is one of a plurality of gray voltages generated by dividing a potential difference between an analog supply voltage and a ground voltage, and the first driving signal serves as the analog supply voltage.
7. The display apparatus of claim 6 , wherein the discharge circuit comprises a resistor having a first terminal connected to the first driving interconnection and a second terminal connected to the receptacle.
8. The display apparatus of claim 7 , wherein the resistor comprises one of a fixed resistor having a fixed resistance value and a variable resistor having a variable resistance value.
9. The display apparatus of claim 5 , wherein the discharge circuit comprises first and second diodes connected in parallel between the first driving interconnection and the receptacle, the first diode comprises an anode terminal electrically connected to the first driving interconnection and a cathode terminal connected to the ground, and the second diode comprises a cathode terminal electrically connected to the first driving interconnection and an anode terminal connected to the ground.
10. The display apparatus of claim 5 , wherein the printed circuit board further comprises a discharge interconnection electrically connecting the discharge circuit to the receptacle.