ANALYSIS OF CONTROL METHODS FOR LED BACKLIGHTING OF DISPLAY DEVICES
Abstract
The analysis of control methods for LED backlighting of display devices is carried out. An analysis of the perception of pulsed light sources by human vision is given. Recommendations are given for choosing the frequency of LED-backlighting, information of visible flickering to the minimum level, the use of a direct current of LED power supply. A combined driver for powering the LED backlight is developed.
About the Authors
D. V. Chistobaev
Design office «Display».
Belarus
Belarus
Master of Technical Sciences, design engineer.
13a P. Brovki Str., 210605 Vitebsk.
E. A. Krasnobaev
Vitebsk state university named after P. M. Masherov.
Belarus
Belarus
Candidate of Sciences (Technology), associate professor, chief of department.
33 Moskovskiy Ave., 210038 Vitebsk.
References
1. Bugrov V. E., Vinogradova K. A. Optojelektronika svetodiodov [Optoelectronics of LEDs]. St. Petersburg, NIU ITMO, 2013. 174 p. (in Russian).
2. Spravochnaya kniga po svetotehnike [Reference book on lighting equipment]. Moscow, Znak, 2006. 972 p. (in Russian).
3. Ashdown, I. E. Extended parallel pulse code modulation of LEDs // Sixth International Conference on Solid State Lighting, AA (TIR Systems Ltd. (Canada)), Proceedings of the SPIE, 2006, v. 6337, pp. 1–11.
4. Issledovanie kriticheskoy chastotyi sliyaniya melkaniy [Investigation of the critical frequency of flicker fusion] // Glazmed — medical portal. Available at: http://glazamed.ru/baza-znaniy/oftalmologiya/issledovaniya/3.4.3-issledovaniekriticheskoy-chastoty-sliyaniya-melkaniy/ (accessed: 18.07.2018) (in Russian).
5. Pulse Width Modulation. TFT Central, 2018. Available at: http://www.tftcentral.co.uk/articles/pulse_width_modulation.htm (accessed: 18.07.2018).
6. Nishida, T. Human Perception for high-speed visual presentation. Human-Harmonized Information Technology, v. 1, Tokyo, Springer, 2016, pp. 122–124.
7. Yutaka N., Yutaka S. Transient twinkle perception is induced by sequential presentation of stimuli that flicker at frequencies above the critical fusion frequency. Attention, Perception, & Psychophysics, 2015, v. 77, i. 8, pp. 2711–2727.
Review
For citations:
Chistobaev D.V., Krasnobaev E.A. ANALYSIS OF CONTROL METHODS FOR LED BACKLIGHTING OF DISPLAY DEVICES. Digital Transformation. 2018;(2):60-64. (In Russ.)
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