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Method for preparing portable rectangular flexible low voltage driving electric heating film

A low-voltage driving, electric heating film technology, applied in the direction of ohmic resistance heating, electric heating devices, heating element materials, etc., can solve the problems of limited heating power, high power consumption, display brightness, color difference, resolution and other display characteristics. Achieve the effect of low cost, simple structure and convenient assembly

Active Publication Date: 2017-11-07
上海晶朋电子科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The front-end film is mainly a transparent conductive film made of glass or transparent polyester plastic (PET), which is covered with a heating film on the entire surface, and the power consumption is slightly higher, and the film will affect the brightness and color difference of the display. , resolution and other display characteristics have certain influence
On the other hand, due to the extremely small thickness of the transparent film, its heating power is limited

Method used

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  • Method for preparing portable rectangular flexible low voltage driving electric heating film
  • Method for preparing portable rectangular flexible low voltage driving electric heating film
  • Method for preparing portable rectangular flexible low voltage driving electric heating film

Examples

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Embodiment

[0022] A flexible electric heating film is designed for a PLC liquid crystal display with a size of 62mm×105mm. The electrode arrangement is as follows: figure 1 shown. The substrate material is 62mm×105mm PET, and the width of the electrode line is 2mm. First print a layer of silver carbon paste with graphene added on PET, the amount of graphene added is 1%; after drying, overprint a layer of silver carbon paste with carbon nanotubes added on top of the existing electrode, carbon The addition of nanotubes is 1.5% and baked at a low temperature of 150 degrees Celsius for 1 hour. High thermal conductivity transparent silica gel is selected, and a protective glue of about 5um is formed on the surface of the electrode through a spin-coating process. Connect the electrode with the control circuit to apply a DC voltage of 5V. After 10 minutes of continuous power on, the infrared imaging of the electrode is measured as follows: image 3 As shown, the average temperature rise of t...

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Abstract

The invention relates to the field of heating film, specifically to a method for preparing a portable rectangular flexible low voltage driving electric heating film. The method includes the steps of adding one-dimensional or two-dimensional nanometer silver material in low temperature silver slurry, adding one-dimensional or two-dimensional nanometer carbon materials in the modified silver slurry, uniformly mixing the modified low temperature carbon silver slurry, preparing the modified low temperature carbon silver slurry on an electrode substrate film, registering one to five layers of flexible heating electrode films with different thickness on the electrode substrate film, leading out two electrode pins from the lower side of the electrode line on the flexible heating film, and coating a layer of high heat-conducting glue. Compared with the prior art, the film produced through the method has the advantages of simple structure, easy assembly and low cost, and is suitable for mass production. The film has the heating function of an indium tin oxide film in a common LCD, and serves as a back heating film and has the advantages of high flexibility and low-voltage driving.

Description

technical field [0001] The invention relates to the field of heating films, in particular to a preparation method of a portable rectangular flexible low-voltage driving electric heating film. Background technique [0002] Limited by material properties, when the operating temperature is lower than 0°C, liquid crystal displays, OLED displays, etc. will show problems such as slow response speed, low brightness, or even work failure, and working in a low temperature environment for a long time will lead to a reduction in device life. In order to solve the bottleneck problem of low temperature work, the industry often uses electric heating film to assist and increase its working temperature. At present, the most commonly used preformed transparent conductive films include indium tin oxide heating films, nano-silver metal films, FTO transparent conductive films, etc. The front-end film is mainly a transparent conductive film made of glass or transparent polyester plastic (PET), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/12H05B3/34
CPCH05B3/12H05B3/34H05B2203/009H05B2203/017H05B2214/04
Inventor 张哲娟卫强黄锁忠胡强
Owner 上海晶朋电子科技有限公司
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