Ana kuma kiran allon wayar hannu nunin allo, wanda ake amfani da shi wajen nuna hotuna da launuka.Ana ƙididdige girman allo akan diagonal na allon, yawanci a cikin inci (inch), wanda ke nufin tsayin diagonal ɗin allo.

Kayan Allon yana ƙara zama mahimmanci yayin da allon launi na yau da kullun ke amfani da shi.Kuma allon launi na wayoyin salula ya bambanta saboda bambancin ingancin LCD da fasahar R&D.Akwai nau'ikan TFT, TFD, UFB, STN da OLED.A al'ada, yawancin launuka da hotuna masu rikitarwa za a iya nuna su, to, matakin hoton zai fi kyau.

A cikin 'yan shekarun nan, tare da saurin haɓakawa da haɓaka wayoyin hannu, haɓakar kasuwar allo ta wayar hannu ta duniya da sabbin fasahohi sun haɓaka, kuma girman masana'antar ya ci gaba da ƙaruwa.Daga mahangar tsarin samfur, allon wayar hannu na yanzu yana mamaye da allon taɓawa, wanda galibi ya ƙunshi gilashin murfi, nau'ikan taɓawa, na'urorin nuni da sauran abubuwa.Koyaya, yayin da buƙatun wayoyin hannu masu sauƙi da sirara da nunin ma'ana mai girma ke ci gaba da ƙaruwa, Tare da haɓaka balaga na fasahar taɓawa, masana'antar allo ta wayar hannu tana haɓaka sannu a hankali daga samar da kayan masarufi guda ɗaya na al'ada zuwa haɗaɗɗen ƙirar ƙira, da yanayin haɗin kai tsaye na sarkar masana'antu a bayyane yake.