5. STOCK-BASED COMPENSATION (Details - Stock based compensation) - USD ($)	3 Months Ended	6 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Stock based compensation expense	$ 157,079	$ 274,706	$ 228,225	$ 351,211
Cost of Goods Sold [Member]
Stock based compensation expense	11,233	11,233	22,466	22,466
Research and Development Expenses [Member]
Stock based compensation expense	19,435	12,683	36,360	25,368
Selling, General and Administrative Expenses [Member]
Stock based compensation expense	$ 126,411	$ 250,790	$ 169,399	$ 303,377

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