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A flexible and controllable organic electroluminescent array, preparation method and application

A luminescence and array technology, applied in circuits, electrical components, electrical solid-state devices, etc., can solve problems such as inability to emit light

Active Publication Date: 2022-04-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing organic electroluminescent displays all emit light in a large area, and cannot control specific areas to emit light or form specific patterns through active arrays of intersecting electrodes.

Method used

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  • A flexible and controllable organic electroluminescent array, preparation method and application
  • A flexible and controllable organic electroluminescent array, preparation method and application
  • A flexible and controllable organic electroluminescent array, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Using electrospinning technology to make PVA nanofiber web as the substrate; wherein, the spinning solution is a PVA solution with a concentration of 10%, the diameter of the spray pinhole is 0.7mm, the liquid flow rate is 10ml / min, and a DC voltage of 15kV is used.

[0033] Under the vacuum environment, use the first mask plate to cover the surface of the PVA nanofiber web, on the PVA nanofibrous web substrate with The evaporation rate of Ag is thermally evaporated to form Ag nanonetwork in stripe array; the structure of the first mask plate is as follows Figure 5 As shown, the width of the rectangular opening is 40 μm.

[0034] Under vacuum conditions, place the third mask on the surface of the Ag nanonet, on the Ag nanonet with Evaporation rate of thermally evaporated Alq 3 , forming a circular array of Alq 3 nanonet; the structure of the third mask is as Figure 7 As shown, the diameter of the circular opening is 40 μm, and the spacing between the circular ho...

Embodiment 2

[0039] The preparation method and steps are the same as in Example 1, except that the spinning solution is a PVA polymer solution with a concentration of 12%; the width of the rectangular openings of the first mask plate and the second mask plate is 80 μm, and the width of the second mask plate is 80 μm. The diameter of the circular opening of the three masks is 80 μm, and the spacing between the circular holes in each row and column is 80 μm; the evaporation rate of thermal evaporation is

Embodiment 3

[0041] The preparation method and steps are the same as in Example 1, except that the spinning solution is a PVA polymer solution with a concentration of 15%; the width of the rectangular openings of the first mask and the second mask is 120 μm, the second The diameter of the circular opening of the three masks is 120 μm, and the spacing between the circular holes in each row and column is 120 μm; the evaporation rate of thermal evaporation is

[0042] The flexible and controllable organic electroluminescence array prepared in this example is connected to the control system, and the control system sends a signal of "0" or "1" to the light-emitting array to control the on-off of the light-emitting array circuit, such as figure 2 shown. The dotted line in the figure indicates the disconnection of the circuit given by the control system, that is, the signal "0"; the solid line indicates the connection of the circuit given by the control system, that is, the signal "1"; the int...

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Abstract

The invention belongs to the technical field of flexible display, and relates to a flexible and controllable organic electroluminescent array, a preparation method and an application. The organic electroluminescent array of the present invention is composed of five layers of nano-nets, which are PVA nano-fiber nets, Ag nano-nets, Alq 3 nanomesh, NPB nanomesh and ITO nanomesh. When applied to pattern controllable luminescence, the stripe arrays of Ag nanonet and TO nanonet are used as cathode and anode respectively, and connected to the control system. According to the requirements of the luminous pattern, different cathode and anode switches are controlled by the control system to form a specific point array. glow. Because only the array in a specific area is working with light, and the other arrays are in the off state, so the power consumption of the light-emitting array is low when it is working. Since the light-emitting array of the present invention is processed on the flexible nanofiber web, it realizes the function of flexibility and provides a reference for future flexible and wearable light-emitting devices.

Description

technical field [0001] The invention belongs to the technical field of flexible display, and relates to a flexible and controllable organic electroluminescent array, a preparation method and an application. Background technique [0002] Compared with traditional liquid crystal display (Liquid Crystal Display, LCD), organic light-emitting diodes (Organic Light-Emitting Diode, OLED) have low power consumption, high saturation, fast response, wide viewing angle, wide color gamut, Features such as thin thickness and the ability to achieve flexibility have gradually become the mainstream in the display field. [0003] At present, there is a mature electrospinning technology to prepare transparent and flexible organic electroluminescent arrays. Electrospinning technology is a method of preparing nanofiber materials by using a high-voltage electrostatic field to break down a polymer solution, and finally forms nanofibers on a receiving device. However, the existing organic electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32
CPCH10K59/10H10K59/17
Inventor 江诚鸣曹旭光卜镜元宋金会
Owner DALIAN UNIV OF TECH