| Document And Entity Information | May 07, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 7, 2020 |
| Entity Registrant Name | UNIVERSAL DISPLAY CORPORATION |
| Entity Central Index Key | 0001005284 |
| Entity Emerging Growth Company | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | OLED |
| Security Exchange Name | NASDAQ |
| Entity File Number | 1-12031 |
| Entity Incorporation, State or Country Code | PA |
| Entity Tax Identification Number | 23-2372688 |
| Entity Address, Address Line One | 375 Phillips Boulevard |
| Entity Address, City or Town | Ewing |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 08618 |
| City Area Code | (609) |
| Local Phone Number | 671-0980 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
