阅读说明：本技术 一种变色油墨应用于线路板的设计方法 (Design method for applying color-changing ink to circuit board ) 是由 戚胜利 王健 孙彬 沈洪 李晓华 于 2019-11-14 设计创作，主要内容包括：本发明提供一种变色油墨应用于线路板的设计方法,涉及线路板加工技术领域。该变色油墨应用于线路板的设计方法,包括以下步骤：S1、在线路板上印刷变色油墨,印刷完毕之后对油墨进行固化,固化后油墨颜色为浅色或接近无色状态；S2、对线路板进行电气功能检测,在完成电气功能检测工序后,使用AVI进行扫描检查,检测油墨下是否存在异物等不良现象；S3、在AVI扫描检查完成后,再对线路板上的印刷油墨进行烘烤。通过使用感温变色油墨印刷线路板,感温变色油墨可解决使用绿色保护油墨的COF产品无法满足超窄边框LCD显示器边缘区域遮光问题,同时可解决传统印刷黑色保护油墨方法造成的COF产品无法通过扫描AVI保证产品质量的问题。(The invention provides a design method for applying color-changing ink to a circuit board, and relates to the technical field of circuit board processing. The design method of the color-changing ink applied to the circuit board comprises the following steps: s1, printing color-changing ink on the circuit board, and curing the ink after printing is finished, wherein the color of the cured ink is light color or nearly colorless; s2, detecting the electrical function of the circuit board, after the electrical function detection process is finished, scanning and checking by using AVI to detect whether the bad phenomena such as foreign matters exist under the ink; and S3, baking the printing ink on the circuit board after the AVI scanning inspection is finished. By using the temperature-sensitive color-changing ink printed circuit board, the temperature-sensitive color-changing ink can solve the problem that a COF product using green protection ink cannot meet the requirement of shading of the edge area of an LCD display with an ultra-narrow frame, and can also solve the problem that the COF product cannot ensure the product quality by scanning AVI due to the traditional black protection ink printing method.)

1. A design method for applying color-changing ink to a circuit board is characterized in that: the method comprises the following steps:

s1, printing color-changing ink on the circuit board, and curing the ink after printing is finished, wherein the color of the cured ink is light color or nearly colorless;

s2, detecting the electrical function of the circuit board, after the electrical function detection process is finished, scanning and checking by using AVI to detect whether the bad phenomena such as foreign matters exist under the ink;

and S3, after AVI scanning and checking are finished, baking the printing ink on the circuit board, taking out the circuit board, and cooling under natural conditions.

2. The method for designing a wiring board using the color-changing ink according to claim 1, wherein: the temperature for curing in the step 1 is 65-75 ℃.

3. The method for designing a wiring board using the color-changing ink according to claim 1, wherein: the baking temperature in the step 3 is 85-95 ℃.

Technical Field

The invention relates to the technical field of circuit board processing, in particular to a design method for applying color-changing ink to a circuit board.

Background

At present LCD display wide application in smart mobile phone, the intelligence is dull and stereotyped, in consumer electronics products such as large screen smart TV, the flexible line way board is generally used as the necessary functional connecting device of connecting display panel and control mainboard, because LCD's theory of operation, it can not give out light itself, need light with the help of extra light source, consequently there is certain light leak phenomenon at the screen edge in the display process, influence the use impression of display, the frame that needs to utilize the display shelters from, but along with super narrow frame, comprehensive screen becomes market trend, the frame exists to be difficult to satisfy screen edge shading requirement. Therefore, the light shielding performance can be improved by changing the circuit board protection ink connected with the display into black, and the problem of light leakage at the edge of the LCD display with the ultra-narrow frame is effectively solved.

At present, the color of the protective ink with the widest application range is green, the shading effect is difficult to achieve an ideal state, and if the black ink is directly adopted for printing, the bad phenomena such as foreign matters under the black ink are difficult to scan when AVI equipment is used for appearance inspection, and the risk of missing inspection of the bad products is caused.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a method for designing a color-changing ink applied to a circuit board, which solves the problems that the color of the protective ink which is the widest application range at present is green, the shading effect is difficult to achieve an ideal state, and the bad phenomena of foreign matters under black ink and the like are difficult to scan when AVI equipment is used for appearance inspection, and the risk of missing inspection of the bad products is caused.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a design method for applying color-changing ink to a circuit board comprises the following steps:

s1, printing color-changing ink on the circuit board, and curing the ink after printing is finished, wherein the color of the cured ink is light color or nearly colorless;

s2, detecting the electrical function of the circuit board, after the electrical function detection process is finished, scanning and checking by using AVI to detect whether the bad phenomena such as foreign matters exist under the ink;

and S3, after AVI scanning and checking are finished, baking the printing ink on the circuit board, taking out the circuit board, and cooling under natural conditions.

Preferably, the temperature for curing in the step 1 is 65-75 ℃.

Preferably, the temperature for baking in the step 3 is 85-95 ℃.

(III) advantageous effects

The invention provides a design method for applying color-changing ink to a circuit board. The method has the following beneficial effects:

by using the temperature-sensitive color-changing ink printed circuit board, the temperature-sensitive color-changing ink can solve the problem that a COF product using green protection ink cannot meet the shading problem of the edge area of an LCD display with an ultra-narrow frame on the basis of ensuring the specification requirement and the reliability requirement of the product, and can solve the problem that the COF product cannot ensure the product quality by scanning AVI due to the traditional black protection ink printing method.

Drawings

FIG. 1 is a schematic view of a circuit board of the present invention after curing;

FIG. 2 is a schematic diagram of the circuit board of the present invention after baking.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.