Crown Electrokinetics Corp. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Notes Payable - Narrative (Details)

Notes Payable - Narrative (Details)												1 Months Ended								3 Months Ended		12 Months Ended
Notes Payable - Narrative (Details)	Jul. 25, 2023 USD ($) investor	Jul. 10, 2023 USD ($) shares	Jun. 30, 2023 USD ($) shares	Jun. 13, 2023 USD ($)	Jun. 04, 2023 USD ($)	May 30, 2023 USD ($) shares	May 26, 2023 USD ($) shares	May 18, 2023 USD ($) shares	May 16, 2023 USD ($)	May 15, 2023 USD ($) shares	Feb. 02, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jun. 30, 2023 shares	May 31, 2023 USD ($) $ / shares shares	Apr. 30, 2023 USD ($) shares	Mar. 31, 2023 $ / shares shares	Feb. 28, 2023 USD ($) $ / shares shares	Jan. 31, 2023 USD ($) $ / shares shares	Oct. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2024 USD ($) $ / shares	Mar. 31, 2023 USD ($) $ / shares	Dec. 31, 2023 USD ($) noteHolder $ / shares	Dec. 28, 2023	Jul. 04, 2023 shares	Feb. 01, 2023 shares
Line of Credit Facility [Line Items]
Common stock, par value (in dollars per share) \| $ / shares																				$ 0.0001		$ 0.0001
Change in fair value of warrant liability																				$ 23,000	$ (5,606,000)
Loss on extinguishment of debt																					$ 0
Preferred stock, value																				$ 0		$ 0
Outstanding balance repaid												$ 400,000
Cemen Tech Capital, LLC
Line of Credit Facility [Line Items]
Interest rate																6.96%					6.96%		8.75%
Series F preferred stock
Line of Credit Facility [Line Items]
Warrants and rights outstanding, term																				5 years
Exercise price per share (in dollars per share) \| $ / shares																				$ 8.868
Preferred stock, value																				$ 0		0
Convertible preferred stock (in shares) \| shares																								2,622
Series E preferred stock
Line of Credit Facility [Line Items]
Preferred stock, value																				0		$ 0
Agreed to issue shares (in shares) \| shares			8,000										8,000
Commitment fee											$ 1,500,000
Convertible preferred stock (in shares) \| shares																									1,000
Convertible2022 Notes
Line of Credit Facility [Line Items]
Principal amount of debt																			$ 5,400,000
Warrants purchased (in shares) \| shares																	96,890		362,657
Proceeds from issuance of warrants																			$ 3,500,000
Conversion price per share (in dollars per share) \| $ / shares																$ 9.42			$ 29.70		$ 9.42
Warrants exercise price (in dollars per share) \| $ / shares																			$ 19.32
Warrants and rights outstanding, term																			5 years
Debt instrument, interest rate, effective percentage																5.00%					5.00%
Issue of total shares (in shares) \| shares																31,724
Debt instrument, note holders elected option \| noteHolder																						6
Debt instrument, increase in face amount during period																						$ 200,000
Deferred debt issuance costs																				300,000
Change in fair value of warrant liability																				2,700,000
Principal balance																				200,000
Fair value notes																				1,000,000
Issuance of common stock in connection with conversion of notes (in shares) \| shares													248,981
Long-term debt, gross																				0
Convertible2022 Notes \| Investors, Tranche One
Line of Credit Facility [Line Items]
Issue of total shares (in shares) \| shares														161,603
Debt instrument, annual principal payment														$ 1,500,000
Common stock, par value (in dollars per share) \| $ / shares														$ 9.28
Convertible2022 Notes \| Investors, Tranche Two
Line of Credit Facility [Line Items]
Conversion price per share (in dollars per share) \| $ / shares														$ 10.93
Issue of total shares (in shares) \| shares														127,393
Debt instrument, annual principal payment														$ 1,400,000
Convertible2022 Notes \| Common Stock
Line of Credit Facility [Line Items]
Debt instrument, interest rate, effective percentage																5.00%					5.00%
Senior Secured Notes
Line of Credit Facility [Line Items]
Principal amount of debt																		$ 1,200,000
Warrants and rights outstanding, term																		5 years
Issuance of common stock in connection with conversion of notes (in shares) \| shares			41,667											203,500
Long-term debt, gross																				0
Purchase warrants (in shares) \| shares																		41,667
Common stock for net proceeds																		$ 1,000,000
Percentage of additional principal																		10.00%
Loss on extinguishment of debt					$ (100,000)																	$ 2,200,000
Senior secured notes					200,000
Preferred stock, value					100,000
Debt instrument, convertible, fair value adjustment		$ 40,000.00	$ 300,000
Fair value adjustment shares (in shares) \| shares			41,667
Notes and loans payable		$ 100,000
Shares of common stock (in Shares) \| shares		189,602
Senior Secured Notes \| Common Stock
Line of Credit Facility [Line Items]
Exercise price per share (in dollars per share) \| $ / shares																		$ 19.32
Senior Secured Notes \| Series F preferred stock
Line of Credit Facility [Line Items]
Derivative liability					$ 100,000
Secured Promissory Note
Line of Credit Facility [Line Items]
Equity line of credit																	$ 2,000,000
Note 2023
Line of Credit Facility [Line Items]
Principal amount of debt							$ 200,000
Conversion price per share (in dollars per share) \| $ / shares																	$ 30.00
Issue of total shares (in shares) \| shares							66,667,000,000			66,667
Long-term debt, gross																				0
Debt instrument, convertible, fair value adjustment			$ 2,000,000	$ 100,000			$ 600,000			$ 700,000
Issuance date																	60 days
Exchange shares of common stock (in shares) \| shares															33,333
Debt instrument, interest rate during period															15.00%
Line of credit facility, fair value adjustment							200,000								$ 200,000
Agreed to issue shares (in shares) \| shares															33,333
Long-term line of credit							200,000		$ 200,000
Line of credit facility, interest rate during period									15.00%
Commitment fee							$ 200,000
Accrued interest and commitment fees				$ 2,100,000
Convertible preferred stock (in shares) \| shares			133,333										133,333
Outstanding balance repaid												$ 400,000
Note 2023 \| Common Stock
Line of Credit Facility [Line Items]
Issue of total shares (in shares) \| shares			83,333
Note 2023 \| Series E preferred stock
Line of Credit Facility [Line Items]
Issuance of common stock in connection with conversion of notes (in shares) \| shares										4,000
Exchange shares of common stock (in shares) \| shares							4,000,000,000			4,000
Agreed to issue shares (in shares) \| shares			13,000				4,000						13,000
Agreed to issue line of credit shares (in shares) \| shares			5,000
Demand Note
Line of Credit Facility [Line Items]
Principal amount of debt						$ 100,000		$ 200,000
Deferred debt issuance costs								$ 200,000
Long-term debt, gross																				$ 100,000
Issue of aggregate share (in shares) \| shares								76,626
Line of credit, number of investors \| investor	2
Purchase price	$ 20,000,000
Original discount issued	12,000,000
Line of credit, commitment contingency, obligation amount	$ 100,000
Demand Note \| Common Stock
Line of Credit Facility [Line Items]
Deferred debt issuance costs						$ 100,000
Issue of aggregate share (in shares) \| shares						46,935