An electroluminescent display device and a manufacturing method thereof

A display device and electroluminescence technology, which is applied in the direction of image/graphic display tubes, electrical components, electrode devices and related components, etc., can solve the problems of complex emission cathode preparation process, difficult material conduction band electron supply, high resistance of diamond, etc. , to achieve the effect of reducing device cost, simple structure and improving resolution

Active Publication Date: 2015-12-02
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the shapes of field emission cathodes include tapered and flat film types. The preparation process of tapered field emission cathodes is complex, difficult, and costly, and it is not easy to make large-area display devices; the flat film type generally adopts diamond film or diamond-like type. However, diamond is a material with negative electron affinity. Negative electron affinity makes electrons migrate into the material, making it difficult to replenish electrons in the conduction band of the material. In addition, diamond has a high resistance, resulting in limited field emission performance.

Method used

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  • An electroluminescent display device and a manufacturing method thereof
  • An electroluminescent display device and a manufacturing method thereof
  • An electroluminescent display device and a manufacturing method thereof

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Embodiment Construction

[0033] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0034] see figure 1 , figure 2 as well as image 3 , the electroluminescence display device of the present invention includes two substrates 1, a cathode 2, a sealant 3, a microchannel plate 4 (the upper and lower surfaces are respectively attached with an upper electrode 9, a lower electrode 10), an anode 5, phosphor powder Layer 6, spacer 7 and electron field emitter 8 (for emitting electrons).

[0035] The cathode 2 is arranged on one of the substrates, a plurality of field electron emitters 8 are arranged in a matrix manner on the cathode 2, the phosphor layer 6 is arranged on the other substrate, and the anode 5 is arranged on the phosphor layer 6, and the field electrons A microchannel plate 4 is arranged between the emitter 8 and the anode 5, and the isolation column 7 covers the cathode area except the edge of the cathode 2 (the edge is used...

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Abstract

The invention provides an electroluminescent display device and a manufacturing method thereof. The electroluminescent display device comprises a substrate, a cathode, an anode, a phosphor layer, electron emitters and isolation columns. The isolation columns form mutually isolated electron mobile channels for each electroluminescent field electron emitter to move from the cathode to the anode via the corresponding areas in a micro channel board or corresponding micro channels. The micro channel board effectively realize an electron multiplication effect. The isolation columns can realize an effect of controlling thickness, segmenting pixels and insulation. According to the invention, the device manufactured in the structure of the electroluminescent display device of the invention has a broad material selection scope. The manufacutring technology is simple. The resolution, the gray scale grade, the contrast, etc. of the device can be raised. The cost of the device can be lowered.

Description

technical field [0001] The invention belongs to the field of display, and in particular relates to an electroluminescence display device structure. Background technique [0002] Electron field emission refers to the emission of applying a strong electric field on the surface of an object to weaken the binding energy that prevents electrons from escaping the object, and using the tunneling effect to make it escape from the object. The magnitude of the field emission current density is closely related to the field strength of the applied electric field and the work function of the emitter. At present, the shape of the field emission cathode includes a pointed cone type and a flat film type. The production process of the pointed cone field emission cathode is complex, difficult, and expensive, and it is not easy to make a large-area display device; the flat film type generally adopts a diamond film or a diamond-like type. However, diamond is a material with negative electron a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J31/12H01J29/04H01J29/46
Inventor 张麦丽牟强
Owner SHAANXI UNIV OF SCI & TECH
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