A planar field emission backlight and its manufacturing method

Abstract

The invention provides a planar field emission backlight source. The planar filed emission backlight source comprises an anode substrate, a cathode substrate, separation pillars and sealing frame bodies, wherein the separation pillars are arranged between the anode substrate and the cathode substrate; and the sealing frame bodies are used for connecting the anode substrate and the cathode substrate. The planar field emission backlight source is characterized in that the anode substrate consists of a glass substrate, a transparent conducting layer arranged on the surface of the glass substrate, and a fluorescent powder layer which is arranged on the surface of the transparent conducting layer and is provided with a plurality of filling rings; and the cathode substrate consists of a glass substrate, cathodes and gate electrodes arranged on the surface of the glass substrate, electron-emitting sources, and fluorescent powder arranged on the surface of the gate electrodes. The fluorescent powder layer is arranged on the surfaces of the anode substrate and the gate electrodes of the planar field emission structure, so that the electron emission efficiency and the light-emitting efficiency of the backlight source can be effectively increased. Meanwhile, the separation pillars are arranged in the filling rings, so that the problems concerned with the arrangement and alignment of the separation pillars of the field emission backlight source are solved effectively; the process flow of the field emission backlight source is optimized; and the manufacturing cost is lowered.

Description

technical field [0001] The invention relates to a backlight source and its manufacturing technology field, in particular to a planar field emission backlight source and a manufacturing method thereof. Background technique [0002] Planar light sources are widely used in many fields, especially in the field of information display. A variety of passive display devices, including liquid crystal displays, require a planar light source that can emit light uniformly to provide a light source for them. In the prior art, optical methods are generally used to process point light sources or line light sources to obtain a uniform plane light source. For example, the backlight panel of liquid crystal uses light guide plates and diffusers to disperse line light sources into a plane light source. However, the planar light source device working in this conversion mode cannot directly obtain planar light, and must be obtained by subsequent optical processing. Moreover, it is also necessar...

AI Technical Summary

Problems solved by technology

This structure can effectively reduce the operating voltage of the device under the control of the gate, but the gate absorbs a large amount of electrons, which reduces the luminous efficiency of the device; at the same time, the isolation column is arranged on the surface of the phosphor layer, which increases the installation of the isolation column, Alignment and fixation

[0005] In view of this, it is necessary to provide a new type of planar field emission backlight structure to solve the problems of installation, alignment and fixing of isolation columns; at the same time, the luminous efficiency of the device can be improved while reducing the operating voltage of the device

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