Update display module

tower: https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/be3982cdad144d2fa9757d6696e69eae/

tower: https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/c1c5f8e9de9a42b498f35481124691a9/

tower: https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/fd978cb18d7c4602986e6ab721e7b8e7/

Change-Id: Ibfe9b1e6281a8fc3d6a597f5b8334a0f2164daaf