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CN-122025495-A - Flexible array type field emission display and low-voltage driving method thereof

CN122025495ACN 122025495 ACN122025495 ACN 122025495ACN-122025495-A

Abstract

The invention discloses a flexible array type field emission display and a low-voltage driving method thereof, which relate to the technical field of displays and comprise a flexible substrate, a packaging piece and a packaging top plate, wherein a plurality of cathode pieces are fixedly arranged at the top of the flexible substrate, a plurality of strip-shaped grid meshes are arranged at the tops of the cathode pieces, a plurality of supporting pieces are arranged at the outer sides of the strip-shaped grid meshes, field emission elements are fixedly arranged at the aligned positions of the tops of the cathode pieces and the strip-shaped grid meshes, the flexible substrate comprises three flexible bottom plates, three layers of flexible bottom plates are better in tightness, water oxygen permeation is prevented, gaps are formed between an outer packaging tube and an inner packaging tube in a vacuum environment, the outer packaging layer is formed by the outer packaging tube and the inner packaging tube at the outer sides of the plurality of cathode pieces and the strip-shaped grid meshes, the outer packaging tube and the inner packaging tube are made of polyimide, internal resonance is reduced under the condition of good flexibility, and stable electric field is ensured.

Inventors

  • JU BIAO
  • LI WENKANG
  • ZHU KEXUE

Assignees

  • 中科盈德极石(杭州)科技有限公司

Dates

Publication Date
20260512
Application Date
20260205

Claims (8)

  1. 1. A flexible array type field emission display is characterized by comprising a flexible substrate (1), packaging pieces (2) and a packaging top plate (7), wherein a plurality of cathode pieces (3) are fixedly arranged at the top of the flexible substrate (1), a plurality of strip-shaped grids (5) are arranged at the tops of the cathode pieces (3), a plurality of supporting pieces (6) are arranged on the outer sides of the strip-shaped grids (5), field emission elements (4) are fixedly arranged at the aligned positions of the tops of the cathode pieces (3) and the strip-shaped grids (5), the flexible substrate (1) comprises three flexible bottom plates (12), a plurality of flexible connecting pieces (13) are fixedly connected between two adjacent flexible bottom plates (12), and the packaging pieces (2) are fixedly connected between the flexible substrate (1) and the packaging top plate (7).
  2. 2. The flexible array type field emission display as claimed in claim 1, wherein an anode plate (8) is fixedly connected to the bottom of the packaging top plate (7), a plurality of fluorescent layers (9) are fixedly connected to the bottom of the anode plate (8), and the fluorescent layers (9) are in one-to-one correspondence with the cathode parts (3).
  3. 3. A flexible array type field emission display as defined in claim 1, wherein the package (2) comprises an outer packaging tube (21) and an inner packaging tube (22), the outer packaging tube (21) being arranged outside the inner packaging tube (22), the inner diameter of the outer packaging tube (21) being larger than the outer diameter of the inner packaging tube (22).
  4. 4. A flexible array type field emission display as defined in claim 1, wherein said package top plate (7) comprises a plurality of thin plates (71), and a plurality of said thin plates (71) are stacked in an up-down direction.
  5. 5. A flexible array type field emission display as defined in claim 1, wherein two adjacent flexible connection members (13) are arranged in a staggered manner, and a flexible outer sleeve (11) is fixedly connected between the outer sides of three flexible bottom plates (12).
  6. 6. A flexible array type field emission display as defined in claim 1, wherein the supporting member (6) comprises a first insulating frame (61) fixedly connected with the flexible substrate (1), a second insulating frame (62) fixedly connected with the top of the first insulating frame (61), and a conductive layer (63) fixedly connected with the top of the second insulating frame (62), and the second insulating frame (62) is fixedly mounted on the outer side of the bar grid (5).
  7. 7. A flexible array type field emission display as claimed in claim 1, wherein the field emission element (4) comprises a plurality of vertically arranged electron emitters.
  8. 8. A method of driving a field emission display at a low voltage, suitable for use in a flexible array type field emission display as claimed in any one of claims 1 to 7, comprising the steps of: Step one, respectively applying different voltages to a plurality of cathode pieces (3), a plurality of strip grids (5) and a plurality of fluorescent layers (9); Changing the direct current driving of the cathode part (3) into a 100 ns-level pulse burst mode, and maintaining the brightness of 600cd/m2 of the emission display under low average voltage; And thirdly, reducing the voltage of the anode plate (8) from the traditional 10kV to 3-5kV, and improving photon energy generated by electron bombardment quantum dots to compensate the influence of reduction of acceleration voltage.

Description

Flexible array type field emission display and low-voltage driving method thereof Technical Field The invention relates to the technical field of displays, in particular to a flexible array type field emission display and a low-voltage driving method thereof. Background Various displays are rapidly developed and widely applied to the fields of personal computers, mobile communication, consumer electronics and the like, and become a large platform of information technology. Among the displays that are currently in common use are liquid crystal displays, plasma displays, and field emission displays. The field emission display has the advantages of higher contrast ratio, wider visual angle, higher brightness, lower energy consumption, shorter response time, wider working temperature and the like compared with other displays, and can be suitable for illumination light sources, flat panel displays, outdoor full-color large-screen display screens, various advertisement display panels and the like. The development of flexible electronic devices, flexible cold cathode materials have also received attention. Compared with the traditional field emission cold cathode, the flexible cold cathode material has good emission performance and is beneficial to realizing the requirements of miniaturization design, portability and low manufacturing cost of electronic devices. Therefore, the realization of the preparation of the flexible field emission cold cathode material is of great significance for future application in the field of rollable displays and the like. In the prior art, a preparation method of the spindt type cold cathode is still greatly limited, and the traditional preparation process mostly adopts a photoetching method to prepare an array cathode, so that the spindt type cathode array has low integration level, the electron emission capability and the emission current density are difficult to be greatly improved, low-voltage driving cannot be realized, and the application requirement of a small-sized foldable electronic product cannot be met. Disclosure of Invention The invention aims to provide a flexible array type field emission display and a low-voltage driving method thereof, which are used for solving the problems in the prior art. In order to achieve the above purpose, the flexible array type field emission display comprises a flexible substrate, a packaging piece and a packaging top plate, wherein a plurality of cathode pieces are fixedly arranged at the top of the flexible substrate, a plurality of bar grids are arranged at the tops of the cathode pieces, a plurality of supporting pieces are arranged on the outer sides of each bar grid, field emission elements are fixedly arranged at the aligned positions of the tops of the cathode pieces and the bar grids, the flexible substrate comprises three flexible bottom plates, a plurality of flexible connecting pieces are fixedly connected between two adjacent flexible bottom plates, and the packaging piece is fixedly connected between the flexible substrate and the packaging top plate. Preferably, the bottom of the packaging top plate is fixedly connected with an anode plate, the bottom of the anode plate is fixedly connected with a plurality of fluorescent layers, and the fluorescent layers are in one-to-one correspondence with the cathode pieces. Preferably, the package comprises an outer packaging tube and an inner packaging tube, wherein the outer packaging tube is arranged outside the inner packaging tube, and the inner diameter of the outer packaging tube is larger than the outer diameter of the inner packaging tube. Preferably, the package top plate includes a plurality of thin plates, and the thin plates are stacked in an up-down direction. Preferably, two adjacent flexible connecting pieces are arranged in a staggered mode, and a flexible jacket is fixedly connected between the outer sides of the three flexible bottom plates. Preferably, the support member comprises a first insulating frame fixedly connected with the flexible substrate, a second insulating frame fixedly connected with the top of the first insulating frame and a conductive layer fixedly connected with the top of the second insulating frame, and the second insulating frame is fixedly arranged on the outer side of the strip-shaped grid. Preferably, the field emission element includes a plurality of vertically arranged electron emitters. A low voltage driving method of a field emission display includes the steps of: The method comprises the steps of respectively applying different voltages to a plurality of cathode pieces, a plurality of strip-shaped grids and a plurality of fluorescent layers, wherein electrons emitted by a plurality of electron emitters in a field emission element arranged on the cathode pieces move to the positions of the strip-shaped grids under the action of an electric field of the strip-shaped grids, the electrons are emitted out through grid holes of the strip-s