Edit in JSFiddle

<div ng-controller="myCtrl">
  {{ author.name }}
  <my-directive author-name="{{ author.name }}"></my-directive>
</div>
var myApp = angular.module('myApp', []);

myApp.controller('myCtrl', ['$scope', function ($scope) {
  $scope.author = {
		name: 'hyunseob',
    age: 27
  };
}]);

myApp.directive('myDirective', function() {
  return {
    restrict: 'E',
    scope: {
    	authorName: "@"
    },
    template: '<div>My name is {{ authorName }}.</div>',
    link: function(scope) {
    
    }
  }
});