Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Aug. 01, 2024
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Entity Registrant Name	Techpoint, Inc.
Entity Central Index Key	0001556898
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	000-55843
Entity Tax Identification Number	80-0806545
Entity Address, Address Line One	2550 N. First Street
Entity Address, Address Line Two	#550
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	USA 95131
Entity Address, Country	US
City Area Code	408
Local Phone Number	324-0588
Entity Common Stock, Shares Outstanding		18,550,521
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false
Japanese Depositary Shares | Japan Exchange Group
Document Information [Line Items]
Trading Symbol	0001556898
Title of 12(b) Security	Japanese Depositary Shares, each representing one
Common Stock, Par Value
Document Information [Line Items]
Trading Symbol	0001556898
Title of 12(b) Security	Common Stock, $0.0001 par value per share