| 摘要 |
The present invention relates to a polyimide resin for non-rubbing vertical alignment material and a preparation method thereof, and more particularly to a method for preparing a branched diamine compound offering a uniform and high pretilt angle to be used in a polyimide orientation film, a polyimide resin for non-rubbing vertical alignment materials offering a pretilt angle of 90 ° by the non-rubbing method, and a preparation method thereof. |
