Some schools

England

Sheffield Hallam University - Communication, Film and Media Studies PhD

                                             - Cultural, Communication and Computing Research PhD

Royal College of Art-  Communication Art and Design PhD
University For The Creative Arts- Design PhD
U.S.A
1.North Carolina State University   http://www.ncsu.edu/www/ncsu/design/sod5/phd/

2.Illinois Institute of Technology  http://www.id.iit.edu/321/

3.Stanford University                http://www.hotcourses.tw/6/course/us-usa/ph-d-learning-sciences-and-technology-design/72102/50637/%E7%BE%8E%E5%9C%8B.html

4.Harvard University                 http://www.gsd.harvard.edu/academic/ddes/

5.Carnegie Mellon University          http://www.design.cmu.edu/show_program.php?s=2&t=5