SSL protocol on AWS architecture?

Here's my AWS architecture

1 Load Balancer 2 Web/Application server 1 DB server

If client - and my LB communicates with SSL(HTTPS) protocol,

would it be safe with internal LB-WEB/APP-DB server communicates with HTTP?

or should they communicate with same SSL certificates internally too?

It's my first time designing architectures and deploying, I need help :)