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A flexible pressure visualization device and its preparation method

A pressure and flexible technology, applied in the field of pressure visualization devices and their preparation, can solve the problems of distortion, complex data collection and processing process, and insufficient portability, and achieve the effect of long life.

Active Publication Date: 2022-04-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that the stress of the traditional pressure sensor will be distorted by the structural inhomogeneity of the device itself during the pressure measurement process, the subsequent data collection and processing process will become more complicated, and when the pressure sensor and the display cannot be connected normally, the pressure The detection system cannot realize pressure monitoring, and the volume of the display is relatively large, so the traditional pressure detection gas system still has the problem of not being portable enough

Method used

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  • A flexible pressure visualization device and its preparation method
  • A flexible pressure visualization device and its preparation method
  • A flexible pressure visualization device and its preparation method

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preparation example Construction

[0032] The present invention provides a flexible pressure visualization device (such as figure 1 ), the key is to make flexible OLED array cathode with flexible pressure sensitive layer (such as figure 1 As stated above, the pressure sensitive layer is composed of a conductive layer and a conductive encapsulation layer) integrated together; further, in order to maintain the high electrical conductivity of the pressure sensitive layer while being able to isolate water and oxygen, the present invention provides a water and oxygen barrier The preparation method of the flexible pressure sensitive layer comprises: using porous non-woven fabric as substrate, silver nanowire solution and carbon nanotube solution as conductive material, PMMA solution as water and oxygen isolation material; first, silver nanowire solution is drip-coated onto a single A layer of non-woven fabric is covered with a second layer of non-woven fabric, and a mixed solution of PMMA solution and carbon nanotube...

Embodiment 1

[0036] The structure of the OLED diode device used in the present invention is as follows from bottom to top:

[0037] ITO / HAT-CN(10nm) / TAPC(40nm) / NPB:Ir(bt) 2 acac(5%)(15nm) / Bepp 2 (40nm) / LiF(1nm) / Al(100nm);

[0038] The preparation method of a flexible pressure visualization device of the present invention comprises the following steps:

[0039] Step 1: Ultrasonic cleaning the flexible substrate with detergent, acetone, deionized water and isopropanol solution in sequence;

[0040] Step 2: After drying, the ITO glass substrates are respectively and Evaporation rate of HAT-CN and TAPC;

[0041] Step 3: Turn on NPB and Ir(bt) at the same time 2 The baffle plate of acac is co-evaporated, and the speeds of the two are respectively and

[0042] Step 4: Separately with and The rate of evaporation Bepp 2 , LiF and an array electrode, where the array electrode is a grid with a size of 0.2×0.2mm, and the spacing between each grid is 0.1mm;

[0043]Step 5: Drop 4ml ...

Embodiment 2

[0046] The structure of the OLED diode device used in the present invention is as follows from bottom to top:

[0047] ITO / HAT-CN(10nm) / TAPC(40nm) / NPB:Ir(bt) 2 acac(5%)(15nm) / Bepp 2 (40nm) / LiF(1nm) / Al(100nm);

[0048] The preparation method of a flexible pressure visualization device of the present invention comprises the following steps:

[0049] Step 1: Ultrasonic cleaning the flexible substrate with detergent, acetone, deionized water and isopropanol solution in sequence;

[0050] Step 2: After drying, the ITO glass substrates are respectively and Evaporation rate of HAT-CN and TAPC;

[0051] Step 3: Turn on NPB and Ir(bt) at the same time 2 The baffle plate of acac is co-evaporated, and the speeds of the two are respectively and

[0052] Step 4: Separately with and The rate of evaporation Bepp 2 , LiF and array electrodes, where the array electrodes are 0.5×0.5mm grids, and the spacing between each grid is 0.1mm;

[0053] Step 5: Drop 4ml of silver nan...

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Abstract

The invention discloses a flexible pressure visualization device and a preparation method thereof, and relates to the field of photoelectric display. The device comprises a substrate, a transparent conductive electrode ITO, a hole injection layer, a hole transport layer, and an OLED light-emitting layer from bottom to top. , an electron transport layer, an array electrode, and a pressure-sensitive layer and a spacer layer, the pressure-sensitive layer is integrated on the array electrode through the spacer layer, and the pressure-sensitive layer is prepared by drip-coating a porous fiber structure material with a conductive material. The integration of the flexible OLED and the flexible pressure-sensitive layer in the present invention can directly realize the continuous measurement of the space domain and time domain of the pressure without additional data collection and processing circuits.

Description

technical field [0001] The invention relates to the field of photoelectric display, in particular to a pressure visualization device based on an OLED and a pressure sensing layer and a preparation method thereof. Background technique [0002] Because of its excellent properties, organic light-emitting diodes, such as 1. The thickness can be less than 1mm, and the weight is lighter than LCD; 2. There is no liquid substance, so it has good shock resistance and is not afraid of falling; 3. The viewing angle is very large, and it is almost invisible There is a problem of picture distortion; 4. The response time is extremely short, and there will be no smear in the moving picture; 5. The low temperature characteristic is good, and it can still display normally at minus 40°C; 6. The manufacturing process is simple, the cost is lower, and the luminous efficiency is higher. High, energy consumption is lower than LCD; 7. It can be manufactured on substrates of different materials, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/24G01L11/02
CPCG01L1/24G01L11/02
Inventor 于军胜徐达王子君李璐
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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