Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays
This study proposed a micro light-emitting diode (µLED) pixel circuit with a short µLED current (IµLED) delay time for mobile displays. A pixel circuit using complementary metal-oxide-semiconductor-type low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) was designed. The pro...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2025-05-01
|
| Series: | Journal of Information Display |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/15980316.2025.2501708 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849312025409224704 |
|---|---|
| author | Eun Kyo Jung Han Cheol Lee Kook Chul Moon Hwarim Im Yong-Sang Kim |
| author_facet | Eun Kyo Jung Han Cheol Lee Kook Chul Moon Hwarim Im Yong-Sang Kim |
| author_sort | Eun Kyo Jung |
| collection | DOAJ |
| description | This study proposed a micro light-emitting diode (µLED) pixel circuit with a short µLED current (IµLED) delay time for mobile displays. A pixel circuit using complementary metal-oxide-semiconductor-type low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) was designed. The proposed pixel circuit used n-type LTPS TFTs as driving and emission TFTs for pulse width modulation and controlled the µLED operation sequence from the off- to the on-state. Because the pixel circuit’s input signal characteristics could affect the IµLED delay time, the researchers also developed an integrated driver circuit with multiple output signals to operate the proposed pixel circuit. The pixel circuit operations were simulated by connecting the proposed pixel and integrated driver circuits. Consequently, the proposed pixel circuit exhibited a short IµLED delay time of 2.8 µs by enhancing the controllability over the driving TFTs for pulse amplitude modulation during µLED transition. The featured circuits can operate in normal and always-on display modes. The proposed circuits could be integrated into a 320 pixels per inch display based on the layout design. Therefore, the proposed pixel circuit can help improve low gray level expression capability because of the short IµLED delay time and can be used for high-resolution mobile µLED displays. |
| format | Article |
| id | doaj-art-aa8da1be382f48849b589bf3e8554dd3 |
| institution | Kabale University |
| issn | 1598-0316 2158-1606 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Information Display |
| spelling | doaj-art-aa8da1be382f48849b589bf3e8554dd32025-08-20T03:53:12ZengTaylor & Francis GroupJournal of Information Display1598-03162158-16062025-05-0111010.1080/15980316.2025.2501708Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displaysEun Kyo Jung0Han Cheol Lee1Kook Chul Moon2Hwarim Im3Yong-Sang Kim4Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, KoreaDepartment of Display Convergence Engineering, Sungkyunkwan University, Suwon, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, KoreaDepartment of Electrical and Electronics Engineering, Konkuk University, Seoul, KoreaDepartment of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, KoreaThis study proposed a micro light-emitting diode (µLED) pixel circuit with a short µLED current (IµLED) delay time for mobile displays. A pixel circuit using complementary metal-oxide-semiconductor-type low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) was designed. The proposed pixel circuit used n-type LTPS TFTs as driving and emission TFTs for pulse width modulation and controlled the µLED operation sequence from the off- to the on-state. Because the pixel circuit’s input signal characteristics could affect the IµLED delay time, the researchers also developed an integrated driver circuit with multiple output signals to operate the proposed pixel circuit. The pixel circuit operations were simulated by connecting the proposed pixel and integrated driver circuits. Consequently, the proposed pixel circuit exhibited a short IµLED delay time of 2.8 µs by enhancing the controllability over the driving TFTs for pulse amplitude modulation during µLED transition. The featured circuits can operate in normal and always-on display modes. The proposed circuits could be integrated into a 320 pixels per inch display based on the layout design. Therefore, the proposed pixel circuit can help improve low gray level expression capability because of the short IµLED delay time and can be used for high-resolution mobile µLED displays.https://www.tandfonline.com/doi/10.1080/15980316.2025.2501708Low-temperature polycrystalline silicon thin-film transistormicro light-emitting diode displaypixel circuitintegrated driver circuitshort delay time |
| spellingShingle | Eun Kyo Jung Han Cheol Lee Kook Chul Moon Hwarim Im Yong-Sang Kim Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays Journal of Information Display Low-temperature polycrystalline silicon thin-film transistor micro light-emitting diode display pixel circuit integrated driver circuit short delay time |
| title | Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays |
| title_full | Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays |
| title_fullStr | Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays |
| title_full_unstemmed | Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays |
| title_short | Thin-film transistor-based micro light-emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays |
| title_sort | thin film transistor based micro light emitting diode circuits for achieving short delay time by controlling operation sequence in mobile displays |
| topic | Low-temperature polycrystalline silicon thin-film transistor micro light-emitting diode display pixel circuit integrated driver circuit short delay time |
| url | https://www.tandfonline.com/doi/10.1080/15980316.2025.2501708 |
| work_keys_str_mv | AT eunkyojung thinfilmtransistorbasedmicrolightemittingdiodecircuitsforachievingshortdelaytimebycontrollingoperationsequenceinmobiledisplays AT hancheollee thinfilmtransistorbasedmicrolightemittingdiodecircuitsforachievingshortdelaytimebycontrollingoperationsequenceinmobiledisplays AT kookchulmoon thinfilmtransistorbasedmicrolightemittingdiodecircuitsforachievingshortdelaytimebycontrollingoperationsequenceinmobiledisplays AT hwarimim thinfilmtransistorbasedmicrolightemittingdiodecircuitsforachievingshortdelaytimebycontrollingoperationsequenceinmobiledisplays AT yongsangkim thinfilmtransistorbasedmicrolightemittingdiodecircuitsforachievingshortdelaytimebycontrollingoperationsequenceinmobiledisplays |