A cyclic compound represented by the following Formula 1 or any one of the following Compounds 122 to 209: wherein Ar 1 and Ar 2 are the same as or different from each other, and each independently is a substituted or unsubstituted pyrimidyl group or a substituted or unsubstituted triazinyl group; m and n are the same as or different from each other, and each independently is an integer of 1 to 5; when m is two or more, Ar 1 s are the same as or different from each other; when n is two or more, Ar 2 s are the same as or different from each other; X is C; and R 1 and R 2 are the same as or different from each other, and each independently is a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms or a monocyclic or multicyclic aryl group having 6 to 30 carbon atoms, or R 1 and R 2 are linked to each other to form a substituted or unsubstituted monocyclic cycloalkyl ring; Compound 122 Compound 123 Compound 124 Compound 125 Compound 126 Compound 127 Compound 128 Compound 129 Compound 130 Compound 131 Compound 132 Compound 133 Compound 134 Compound 135 Compound 136 Compound 137 Compound 138 Compound 139 Compound 140 Compound 141 Compound 142 Compound 143 Compound 144 Compound 145 Compound 146 Compound 147 Compound 148 Compound 149 Compound 150 Compound 151 Compound 152 Compound 153 Compound 154 Compound 155 Compound 156 Compound 157 Compound 158 Compound 159 Compound 160 Compound 161 Compound 162 Compound 163 Compound 164 Compound 165 Compound 166 Compound 167 Compound 168 Compound 169 Compound 170 Compound 171 Compound 172 Compound 173 Compound 174 Compound 175 Compound 176 Compound 177 Compound 178 Compound 179 Compound 180 Compound 181 Compound 182 Compound 183 Compound 184 Compound 185 Compound 186 Compound 187 Compound 188 Compound 189 Compound 190 Compound 191 Compound 192 Compound 193 Compound 194 Compound 195 Compound 196 Compound 197 Compound 198 Compound 199 Compound 200 Compound 201 Compound 202 Compound 203 Compound 204 Compound 205 Compound 206 Compound 207 Compound 208 Compound 209 wherein Ar 1 and Ar 2 are the same as or different from each other, and each independently is a substituted or unsubstituted pyrimidyl group or a substituted or unsubstituted triazinyl group; m and n are the same as or different from each other, and each independently is an integer of 1 to 5; when m is two or more, Ar 1 s are the same as or different from each other; when n is two or more, Ar 2 s are the same as or different from each other; X is C; and R 1 and R 2 are the same as or different from each other, and each independently is a substituted or unsubstituted linear or branched alkyl group having 1 to 30 carbon atoms or a monocyclic or multicyclic aryl group having 6 to 30 carbon atoms, or R 1 and R 2 are linked to each other to form a substituted or unsubstituted monocyclic cycloalkyl ring; Compound 122 Compound 123 Compound 124 Compound 125 Compound 126 Compound 127 Compound 128 Compound 129 Compound 130 Compound 131 Compound 132 Compound 133 Compound 134 Compound 135 Compound 136 Compound 137 Compound 138 Compound 139 Compound 140 Compound 141 Compound 142 Compound 143 Compound 144 Compound 145 Compound 146 Compound 147 Compound 148 Compound 149 Compound 150 Compound 151 Compound 152 Compound 153 Compound 154 Compound 155 Compound 156 Compound 157 Compound 158 Compound 159 Compound 160 Compound 161 Compound 162 Compound 163 Compound 164 Compound 165 Compound 166 Compound 167 Compound 168 Compound 169 Compound 170 Compound 171 Compound 172 Compound 173 Compound 174 Compound 175 Compound 176 Compound 177 Compound 178 Compound 179 Compound 180 Compound 181 Compound 182 Compound 183 Compound 184 Compound 185 Compound 186 Compound 187 Compound 188 Compound 189 Compound 190 Compound 191 Compound 192 Compound 193 Compound 194 Compound 195 Compound 196 Compound 197 Compound 198 Compound 199 Compound 200 Compound 201 Compound 202 Compound 203 Compound 204 Compound 205 Compound 206 Compound 207 Compound 208 Compound 209