Diploma

Dear Siddhant , though even after 10th you can join an animation course and you can build a career with this , we suggest you to complete 12th at least parallel. These days many companies started asking for graduation as a minimum requirement ( where many of them are also o with a distance programme in any discipline ) .
But yes after 10th also you can join an animation course , which can lead you to good career. After the successful completion of the course with a presentable sample demo exhibiting your grip on software application and skills , you can be absorbed in production house for 3D animation,3D Movie industry, animated tv series & AD's, In gaming industry, In architecture and visualization, In E-Learning, In live action film industry, simulation, product design and modeling , medical animation industry etc.

Obviously go for Diploma.
The Diploma course has a semester pattern similar to that of the degree in engineering. Hence, Diploma students adapt to the pattern more easily as compared to those class 12 students who have followed a yearly examination pattern and find it difficult in the first year to appear for examinations of six subjects within the first four months of the course.
The discomfort is evident through the results of first year of engineering across colleges, with even the usually bright students scoring really low and a few others having to take a drop of one year due to failed scores in more than five subjects. Diploma students by virtue of being admitted directly to the second year, bypass this first-year hurdle.