Kortek corporation
25
of
99
PDP R&D Center
⑥ AC Noise Filter:
It has a function to remove Noise(Low Frequency) come from AC Line and to cut off
surge. AC Filters are affected greatly by safety standards of EMC and EMI.
⑦ COF(Chip On Flexible):
It plays a role to form Address discharge with potential difference with
scan pulse which is applied to Y electrode by applying Va Pulse to Address electrode in Address section.
It is manufactured in the form of COF and one COF consists of 4 Data Drive ICs (STV7610A: 96
Output) (See a diagram of Trouble shooting). In the case of single Scan, it consists of 7 COFs.
⑧ Audio Board
: It receives audio signal (PC/Video(S-Video)/DVD(DTV)) from the external and its
audio output is converted automatically according to input Mode conversion. As audio
amplification IC has been embedded in it, it can amplify sound
⑨ Image Board:
Refer to page 47
⑩ Y-MAIN Bord:
It produces a driving waveform
by switching FETs supplied from Logic
Board according to timing and supplies it to Y electrode of panel via a scan driver IC.
5.1 Power Supply
5.1.1 Power Supply Systematic Diagram & Wiring Diagram
5.1.2 Outline(PDP SMPS)
Considering with various conditions, the power supply of PDP uses a smaller and lighter switching regulator
of good efficiency, the 165V demanding high power consumption uses. Forward system and the other output
voltages use Flyback system having simple circuits. For the high frequency of international standard and the
improvement of reverse rate, AC input is used as an input of the switching regulator when +340V DC
Voltage is generated by using Active PFC(Power Factor Correction).