Apparatus for monitoring a lamp, system having the same for monitoring a lamp, backlight assembly having the same and liquid crystal display apparatus having the same
View Patent ↗An apparatus for monitoring a lamp includes a base body, a sensor and a signal transfer pattern. The base body includes a first face having a first region corresponding to a lamp and a first peripheral region disposed around the first region, and a second face having a second region corresponding to the first region and a second peripheral region corresponding to the first peripheral region. The sensor is disposed in the first region, and outputs a sensing signal in response to a working status of the lamp. The signal transfer pattern is disposed in the second peripheral region, and transfers the sensing signal. Therefore, the apparatus for monitoring the lamp senses abnormal working lamps, so that normally working lamps may be protected from being damaged, shortening of lifetime, causing a fire, etc.
1. An apparatus for monitoring a plurality of lamps, comprising:
a base body including a first face and a second face corresponding to the first face;
a plurality of sensors disposed on the first face and each configured to output a sensing signal for monitoring a corresponding one of the lamps in response to a working status of the lamp;
a noise-blocking pattern disposed on the first face between and insulated from the plurality of sensors; and
a signal transfer pattern disposed on the second face and configured to transfer the sensing signal from the sensor.
2. The apparatus of claim 1 , wherein the first face having a first region corresponding to the lamp and a first peripheral region disposed around the first region, and the second face having a second region corresponding to the first region and a second peripheral region corresponding to the first peripheral region.
3. The apparatus of claim 2 , wherein the sensor is disposed on the first region and the signal transfer pattern is formed in the second peripheral region.
4. The apparatus of claim 1 , wherein a first end of the signal transfer pattern is electrically connected to the sensor.
5. The apparatus of claim 4 , wherein the sensor and the first end are electrically connected to each other through a conductive via-hole.
6. The apparatus of claim 4 , wherein the base body further comprises a connector electrically connected to a second end corresponding to the first end.
7. The apparatus of claim 6 , wherein the connector is disposed in the second peripheral region.
8. The apparatus of claim 6 , wherein the connector is disposed on a side face of the base body.
9. The apparatus of claim 1 , wherein at least two sensors are disposed on the first face in parallel.
10. The apparatus of claim 1 , wherein the sensor is a metal thin film sensing a magnetic field generated from the lamp.
11. The apparatus of claim 10 , wherein the metal thin film is selected from the group consisting of a copper thin film, an aluminum thin film, and an aluminum alloy thin film.
12. The apparatus of claim 1 , wherein a width of the signal transfer pattern and an interval between the signal transfer patterns are about 0.05 mm to 0.15 mm.
13. The apparatus of claim 1 , wherein the signal transfer pattern is disposed in a direction substantially perpendicular to a longitudinal direction of the sensor.
14. The apparatus of claim 1 , wherein the signal transfer pattern is disposed so as not to be overlapped with the sensor when viewed from a plan view of the first face.
15. The apparatus of claim 1 , wherein the noise-blocking pattern is any one selected from the group consisting of a copper thin film, an aluminum thin film, and an aluminum alloy thin film.
16. The apparatus of claim 1 , wherein a portion of the noise-blocking pattern or a whole surface of the noise-blocking pattern is grounded.
17. The apparatus of claim 1 , wherein the noise-blocking pattern includes a same material as in the sensors.
18. The apparatus of claim 1 , wherein the sensor includes a photodiode or a phototransistor configured to sense a light generated from the lamp.
19. A system for monitoring a plurality of lamps, comprising:
an apparatus for monitoring the lamps, including a plurality of sensors disposed on a first region of a first face in a base body and each configured to output a sensing signal in response to a working status of a corresponding one of the lamps, and a signal transfer pattern disposed on the base body and configured to transfer the sensing signal generated from the sensors;
a noise-blocking pattern disposed on the first face between and insulated from the plurality of sensors; and
an apparatus for processing a signal, configured to output a control signal related to the working status of the lamp by comparing the sensing signal with a reference signal.
20. The system of claim 19 , wherein the signal transfer pattern is disposed so as not to be overlapped with the sensor when viewed from a plan view of the first face.
21. The system of claim 19 , wherein the apparatus for processing the signal further comprises a power off module, and the power off module blocks a driving power supplied to the lamp by a first control signal when a level of the sensing signal outputted from the apparatus for processing the signal is lower than a level of the reference signal.
22. The system of claim 19 , wherein the apparatus for processing the signal further comprises an alarm module configured to generate an alarm in response to the first control signal.
23. A backlight assembly comprising:
a receiving container including a bottom face;
a lamp assembly including a plurality of lamps disposed on an inner surface of the bottom face and generating a light, and driving power transferring module transferring a driving power to the lamps;
an apparatus for monitoring the plurality of lamps, including a base body disposed between the bottom face and the lamps, a sensor disposed on a first region of a first face in a base body and configured to output a sensing signal in response to a working status of the lamp, and a signal transfer pattern disposed on the base body and configured to transfer the sensing signal generated from the sensor;
a noise-blocking pattern disposed on the first face between and insulated from the plurality of sensors; and
a sensing signal processing module configured to generate a control signal controlling on/off of the driving power supplied to the lamp in response to the sensing signal.
24. The backlight assembly of claim 23 , wherein the signal transfer pattern is disposed so as not to be overlapped with the sensor when viewed from a plan view of the first face.
25. The backlight assembly of claim 23 , wherein a first end of the signal transfer pattern is electrically connected to the sensor through a via-hole formed on the base body and a second end corresponding to the first end is connected to a connector disposed on the second face.
26. The backlight assembly of claim 23 , wherein an insulating reflecting plate is interposed between the lamp and the lamp monitoring apparatus.
27. The backlight assembly of claim 23 , wherein the sensor includes one of a photodiode and a phototransistor.
28. The backlight assembly of claim 27 , wherein a throughhole receiving a light from the lamp is formed on a part of reflecting plate corresponding to the sensor.
29. A liquid crystal display apparatus comprising:
a receiving container including a bottom face;
a lamp assembly including a plurality of lamps disposed on an inner surface of the bottom face and generating a light, and driving power transferring module transferring a driving power to the lamps;
an apparatus for monitoring the plurality of lamps, including a base body disposed between the bottom face and the lamps, a sensor disposed on a first region of a first face in a base body and configured to output a sensing signal in response to a working status of the lamp, and a signal transfer pattern disposed on the base body and configured to transfer the sensing signal generated from the sensor;
a noise-blocking pattern disposed on the first face between and insulated from the plurality of sensors;
a sensing signal processing module configured to generate a control signal controlling on/off of the driving power supplied to the lamp in response to the sensing signal; and
a liquid crystal display panel fixed to the receiving container and configured to convert the light into an image light including information.
30. The system of claim 19 , wherein the noise-blocking pattern includes a same material as in the sensors.
31. The backlight assembly of claim 23 , wherein the noise-blocking pattern includes a same material as in the sensors.
32. The apparatus of claim 29 , wherein the noise-blocking pattern includes a same material as in the sensors.