Title :
High-output-current and low-power-loss mobile thin-film transistor liquid-crystal display driver
Author :
Mok, K.T. ; Lai, Y.M. ; Chan, W.C. ; Lee, C.F.
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Hong Kong, China
Abstract :
System-on-chip (SoC) mobile thin-film transistor (TFT) liquid-crystal display (LCD) drivers are, to a certain extent, inadequate to support portable devices that require higher driving currents for their high resolution and large LCD panels. In this paper, we will show how a simple boost converter can be designed and used in the display driver for high current demand TFT-LCD panels. The proposed driver circuit is partitioned in a way that the current chip-on-grass (COG) package technology used by the traditional mobile display driver can be maintained in order to save production cost. A prototype of the controller of the proposed power converter is designed with a standard 0.13-¿m HV CMOS process. Compared with traditional designs, the proposed circuit shows its support on higher output currents with improved power efficiency and output voltage variation.
Keywords :
CMOS integrated circuits; driver circuits; liquid crystal displays; power convertors; system-on-chip; thin film transistors; HV CMOS process; LCD panels; boost converter; chip-on-grass package technology; controller prototype; driver circuit; driving currents; high-output-current thin-film transistor liquid-crystal display driver; low-power-loss mobile thin-film transistor liquid-crystal display driver; output currents; output voltage variation; portable devices; power converter; power efficiency; size 0.13 mum; system-on-chip mobile thin-film transistor; CMOS process; CMOS technology; Costs; Driver circuits; Liquid crystal displays; Packaging; Production; Prototypes; System-on-a-chip; Thin film transistors; Thin-film transistor (TFT); boost converter; chip-on-grass (COG); indium-tin-oxide (ITO); liquid-crystal display (LCD);
Conference_Titel :
Power Electronics and Drive Systems, 2009. PEDS 2009. International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4166-2
Electronic_ISBN :
978-1-4244-4167-9
DOI :
10.1109/PEDS.2009.5385797
