Funding is from TA - What to put for funding acknowledgment
A TA doesn't directly fund your research. It funds you, personally and allows you to be a student. Your research hasn't been funded specifically other than the fact that you may have an office, etc. There is probably a tuition waiver, which is a sort of general funding.
You could list the department and university generally as you suggest. You could probably also list &quot;none&quot;, but the department might be the better option.