Supporting assembly, manufacturing method thereof and display device

Abstract

The invention provides a supporting assembly, a manufacturing method thereof and a display device. The supporting assembly comprises a carbon fiber layer, the carbon fiber layer comprises at least one carbon fiber woven layer, and the carbon fiber woven layer comprises a carbon fiber woven base layer and resin materials distributed in gaps and on the surface of the carbon fiber woven base layer, the carbon fiber woven base layer in each carbon fiber woven layer is formed by weaving at least two fibers in different directions; the first high polymer material layer is arranged on one side of the carbon fiber layer. Therefore, after the material formed by weaving the fibers in the at least two different directions is infiltrated by the resin, the strength is high, and the requirement of the supporting assembly on the strength can be met; the carbon fiber layer has good bending performance, and the bending reliability is higher.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a support assembly, a manufacturing method thereof, and a display device. Background technique [0002] At present, the forming materials of the folding structural parts of the folding screen are stainless steel, titanium alloy and aluminum alloy, etc. Different materials have their own advantages and disadvantages. Among them, the stainless steel material has the advantages of high strength and high hardness (tensile strength> 1800Mpa, Hardness>580HV), its bending reliability is high, but its density is high (about 7.92g / cm 3 ), does not meet the demand for lightweight in the display field, and its thermal conductivity is average, the thermal conductivity is about 14W / (m·K); the density of titanium alloy is about 4.5g / cm 3 , meet the requirements of lightweight, but the strength and hardness of titanium alloy are relatively low (tensile strength 600 ~ 700Mpa...

AI Technical Summary

Problems solved by technology

[0002] At present, the forming materials of the folding structural parts of the folding screen include stainless steel, titanium alloy and aluminum alloy, etc. Different materials have their own advantages and disadvantages. Among them, stainless steel materials have the advantages of high strength and high hardness (tensile strength > 1800Mpa, Hardness > 580HV), its bending reliability is high, but its density is high (about 7.92g / cm 3 ), does not meet the demand for light weight in the display field, and its thermal conductivity is average, with a thermal conductivity of about 14W / (m K); the density of titanium alloy is about 4.5g / cm 3 , in line with lightweight requirements, but the strength and hardness of titanium alloys are relatively low (tensile strength 600-700Mpa, hardness > 270HV), bending reliability is average, and its cost is high (the cost of titanium alloy raw materials of the same size is about 3.5 times the cost of stainless steel raw materials), which will increase the cost of folding structural parts, the thermal conductivity is average, and the thermal conductivity is about 15W / (m K); the density of aluminum alloy is about 2.7g / cm 3 , which meets the requirements of lightweight, and its cost is relatively low (the cost of aluminum alloy raw materials of the same size is about 2 / 3 of the cost of stainless steel raw materials), and its thermal conductivity is excellent, with a thermal conductivity of about 110W / (m·K), but The strength and hardness of the aluminum alloy material are low (the tensile strength is about 380Mpa, the hardness is about 100HV), and the bending reliability is low, which cannot meet the small radius folding or bending

[0003] There are two main technical solutions for using SUS (stainless steel) and titanium alloys as folding or sliding roll support materials in display devices, one is to use ultra-thin SUS materials directly as supports, and the other is to use the curved support components The SUS or titanium alloy material corresponding to the folding area or curling area is patterned, and the ultra-thin SUS solution cannot correspond to the shape of the bending or rolling radius less than R3 (radius less than 3mm), patterned SUS and patterned titanium alloy The thickness is relatively thick (thickness ≥ 0.1mm, currently 0.15mm is generally used in consideration of the support performance requirements), and its weight accounts for a relatively high proportion of the module, resulting in a relatively thick support

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