文档介绍：
A stable Zinc Oxide field emitter based backlight unit for
liquid crystal display#
Li Chen, Chen Jing*
5
10
15
20
25
30
35
40
45
(Display R&D Center, School of Electronic Science and Engineering, Southeast University,
NanJing 210096)
Abstract: A Zinc Oxide (ZnO) field emitter based backlight unit with a gated structure was
fabricated by screen-printing processes. The measured anode field emission current density
reaches mA/cm2 when the applied gate voltage is 570 V. Part of the anode current was
contributed by the secondary electron emission which was excited from the MgO layer inside the
gate apertures on the gate plate. The average emission current density and luminance is
mA/cm2 and 1250 cd/m2 respectively with a fluctuation of about 10% during the 1000 minutes
measurement. The gated structure also showed good electron beam focusing property which was
examined by a finite element method calculation. The driving performance of the backlight unit is
characterized by Spice simulation tools and also measured by the oscilloscope. Stable field
emission, line-by-line scanning and fast response characteristics of the backlight unit indicate its
promising application in the liquid crystal displays.
Keywords: field emission; zinc oxide; backlight unit
0 Introduction
Field emission display (FED) has been considered as an encouraging display devi