About the only name brand marketed as a RV set I’m aware of is Jenson. They make up to a 32” TV that’s 12v compatable. Here’s the 24”.. There are also some brands you’ve never heard of.
Assuming you don’t want to use an inverter, you can also wire up a boost converter to boost the 12v up to the 18-19 volts most TVs use. Here’s an example.
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