To be more precise, the Deep State includes the Military Industrial Complex, Intelligence Agencies, Wall Street, and Big Oil. These entities pursue narrow economic and political perspective that serves special interests and not those of the greater American public. It could incorporate groups and individuals in a wider net, such as judges but it doesn't mean all judges are part of the Deep State.

Edit:
The first person to articulate what the "Deep State " is, was Peter Dale Scott who authored several books exploring the concept. Just who or what makes up the "Deep State" is not as cut and dry as people would like. It's an amorphous term meaning different things to different people depending on who you talk to.