4. STOCK-BASED COMPENSATION (Details - Stock based compensation) - USD ($)	3 Months Ended	6 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Stock based compensation expense	$ 274,706	$ 10,228	$ 351,211	$ 353,212
Cost of Goods Sold [Member]
Stock based compensation expense	11,233	0	22,466	0
Research and Development Expenses [Member]
Stock based compensation expense	12,683	2,411	25,368	4,822
Selling, General and Administrative Expenses [Member]
Stock based compensation expense	$ 250,790	$ 7,817	$ 303,277	$ 348,390

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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