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Calculation method for bending resistance test of finished COF Film

A calculation method and bending resistance technology, applied in the direction of applying repeated force/pulsation force to test the strength of materials, can solve problems such as difficult to accurately reflect the bending resistance of lines, and the scrapping of COFFilm finished products, so as to reduce the number of tests and test time , The effect of avoiding scrapped finished products

Pending Publication Date: 2021-07-16
合肥奕斯伟材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this measurement method is judged based on the principle of dichotomy, and the measurement result is a range, which is difficult to accurately reflect the bending resistance of the line
On the other hand, the finished COF Film is scrapped immediately after the folding test

Method used

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  • Calculation method for bending resistance test of finished COF Film

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Comparison scheme
Effect test

Embodiment 1

[0034] A method for calculating the bending resistance of a finished COF Film prepared from a company A base material (raw material prepared by A company), comprising the following steps:

[0035] S1: Take company A’s base material and go through the existing COF Film process to prepare a standard MIT serpentine test circuit, and take a standard circuit with a line width of 12um and a pitch (line width + line spacing) of 22um for a bending resistance test.

[0036] S2: The bending resistance test method refers to the test method in the international standard JIS P8115, the test load is 200g; the measured bending resistance is 45 times. According to the design of the standard MIT serpentine line, the bending test area (referring to the bending test area of ​​the standard MIT serpentine test line, where the line breaks and fails): the width of the standard sample is 15mm, and the length of the bending test line area 3.75mm, the line width of the bending test area is 12um, and th...

Embodiment 2

[0055] A calculation method for the number of bending resistance of finished COF Film prepared by B company base material (the base material provided by B company), comprising the following steps:

[0056] S1: Take the base material provided by Company B (the base material provided by Company B) and go through the existing COF Film process to prepare a standard MIT serpentine test circuit, and take a standard circuit with a line width of 12um and a pitch of 22um for bending resistance test .

[0057] S2: The bending resistance test method refers to the test method in the international standard JIS P8115, the test load is 200g, and the measured bending resistance is 65 times. According to the design of the standard MIT serpentine line, the bending test area (referring to the bending test area of ​​the standard MIT serpentine test line): the width of the standard line is 15mm, the length of the bending test line area is 3.75mm, and the bending test area The line width is 12um, ...

Embodiment 3

[0076] After the COF Film finished product is bent for a certain number of times by a bending tester, observe whether the circuit breaks through a metallographic microscope, and compare the result with the calculation method of the bending resistance test of the finished COF Film of the present invention (embodiment 1 and embodiment 1). 2) The calculated values ​​of the finished COF Film products are compared, and the results are shown in Table 1 below.

[0077] Table 1

[0078]

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Abstract

The invention discloses a calculation method for a bending resistance test of a finished COF film, wherein the method comprises the following steps: S1, preparing a standard MIT snakelike test line sample plate from a substrate through an existing COF film manufacturing process; S2, calculating the tensile strength P sample borne by a single line in a bending area of the standard MIT snakelike test line sample plate; S3, preparing a COF Film finished product from the base material through an existing COF Film manufacturing process; S4, calculating the tensile strength P finished product borne by a single line in the COF calculating film finished product bending area; S5, calculating the ratio n of the P sample to the P finished product; S6, testing the bending resistance times of the bending area of the standard MIT snakelike line sample; and S7, calculating the bending-resistant times of the bending area of the COF Film finished product. Under the condition of not changing the measurement method, the bending resistance times of the finished product can be accurately calculated only through conversion of the MIT test method.

Description

technical field [0001] The invention relates to the field of COF Film production, in particular to a calculation method for a bending resistance test of a finished COF Film. Background technique [0002] At present, the bending resistance testing machine can carry out accurate bending times test on standard serpentine circuit samples ( Once there is a crack, that is, the circuit is blocked), the purpose of the bending test of the existing standard serpentine circuit samples is to test the bending property of the substrate itself. [0003] The COF Film finished product prepared by the existing COF film manufacturing process cannot be powered on, so the current measurement of the bending resistance of the COF Film finished product is mainly through a bending tester for a certain number of times and then observing the circuit through a metallographic microscope. Whether there is a break. On the one hand, this measurement method is based on the principle of dichotomy, and the ...

Claims

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Application Information

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IPC IPC(8): G01N3/32
CPCG01N3/32
Inventor 叶文亮陈文勇吴昱蓉左长云吴宗祐董贺贺张明超方谦
Owner 合肥奕斯伟材料技术有限公司
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