Hi,
Don't do what shouldn't be done.
It's easier for you to find an old monitor and dismantle the CCFL lamps or buy them - the appropriate size.
Before doing this, find somewhere a high-voltage power supply from an old scanner or MFU and connect it to a laboratory power supply.
As a rule, this module operates from +24V DC power supply.
The laboratory source will allow you to vary the voltage and control the current at which the CCFL ignites.
Before proceeding with the deep disassembly of the matrix, check all the available lamps in this way, this will allow you to reject the lamps in your monitor and in the donor.
All this work requires accuracy, since during disassembly / assembly, matrix cables can be damaged.