4. STOCKHOLDERS' EQUITY (Details - Stock based compensation) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Stock based compensation expense	$ 502,345	$ 263,326
Cost of Goods Sold [Member]
Stock based compensation expense	44,932	11,233
Research and Development Expenses [Member]
Stock based compensation expense	68,061	20,398
Selling, General and Administrative Expenses [Member]
Stock based compensation expense	$ 389,352	$ 231,695