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A 2‐in. a‐Si:H TFT‐LCD with embedded backlight control TFT sensors with various channel widths
Author(s) -
Kim Se Hwan,
Kim Eung Bum,
Oh Jae Hwan,
Hur Ji Ho,
Jang Jin
Publication year - 2008
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2896318
Subject(s) - backlight , backplane , thin film transistor , liquid crystal display , channel (broadcasting) , materials science , optoelectronics , intensity (physics) , computer science , optics , computer hardware , physics , telecommunications , layer (electronics) , nanotechnology
Abstract— A 2.0‐in. a‐Si:H TFT‐LCD with embedded TFT sensors for the control of the backlight intensity according to the ambient light intensity has been developed. Two types of a‐Si:H TFT sensors with various channel widths were embedded into a TFT backplane with bottom‐ and top‐gate structures for measuring the ambient light and backlight illumination, respectively. The output signal, measured by a readout IC, increased with backlight intensity until 20,000 lux.