Preparation method of electron emission source nano seam array of surface conduction electron emitter display (SED)

Abstract

The invention relates to a preparation method of an electron emission source nano seam array of a surface conduction electron emitter display (SED). A layer of a laser photoexpansion polymer material is introduced between a transparent base material and an electron emission thin film material with a stress concentration opening, so that a sandwich structure of the transparent base material, the laser photoexpansion polymer material and the electron emission material is formed; laser irradiates the laser photoexpansion polymer material in a seam of a lead electrode on one side, which does not has an electron emission source pattern structure, of the transparent base material, so that the volume of the laser photoexpansion polymer material is expanded and a pulling stress is generated inside the electron emission thin film material on the surface of the laser photoexpansion polymer material; and when the pulling stress reaches a breakage limit of the thin film material, the electron emission thin film material is broken to form a nano crack structure. In the method, by introducing the laser photoexpansion polymer material, the problem of a stress source required by breakage of the electron emission thin film can be solved and the position of a crack can be controlled precisely; meanwhile, array mirror scanning is realized by an in-situ tunnel current control method, and the uniformity of electron emission characteristics of array nano seams can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of micro-nano devices and display devices, and in particular relates to a method for preparing a nano-slit array of an electron emission source of an SED display. Background technique [0002] Flat panel display technology has a wide range of application fields and huge market prospects, and is one of the important pillars of my country's information industry. Among them, the manufacture of display panels is its core. At present, LCD (Liquid Crystal Display) and PDP (Plasma Display Panel) are the mainstream flat panel display devices in the industry, which have been commercialized on a large scale and are undergoing continuous technological upgrading; The next-generation flat panel display technology in the "post-LCD era" or "post-PDP era" has been given great attention, and a large number of basic research and technology development have been launched. Among them, organic light-emitting display OLED (Orga...

AI Technical Summary

Problems solved by technology

There are two problems in the process of manufacturing SED nanoslits in this technology: one is that the location of the cracks is uncertain, and the other is that SEDs usually use glass as the substrate, and the degree of strain under stress is not enough to form on the surface of the electron emission film. Cracks

Images