Question: inner conversation of mind has reduced now.after a period of had stopped during meditation.is it due to Samadhi which achieved?And what is personality view?

Answer: 
Inner conversation will greatly decrease in the second jhana, I'm happy you have experienced this. Yes, this is a development of Samadhi and you are on the right track. A lack of personality view basically speaking, means that you know deeply within yourself that you are simply body, feeling, mental formation, consciousness and perception. That's all, no matter how hard you look that's all you can find. and that's fine. The more developed Samadhi becomes the more the concept of personality fades. It must fade for Samadhi to arise. Keep in mind that until fully awakened you will still have a concept of personality, you need one to survive, however and any time you can turn inwards and try to look for the self or personality and find nothing, it is a very pleasant and peaceful feeling. In that moment you understand that you are everything and nothing simulatiously and nothing can touch you. The fully awakened arahant would reside continuously in this nothingness of self which would, unless he/she retreated to a forest for the lifetime, would find existing in society quite difficult. This is the final fetter of conceit the Buddha talks about. Furthermore, when one understands how personality and personality traits occur one understands them as impermanent, unsatisfactory and not self. Additionally, this is underscored and affirmed by recollecting past lives and seeing how much of a different person you were depending on different circumstances, this helps you to let go of attachment to the personality traits you have. Everything changes.
Personality view is seen things as internal (five aggregate) and external (five aggregate).
You perceive internal as I,me and myself and external as not me, not mine and not myself.