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Screen manufacturing process for reducing poor exposure

A production process and screen technology, which is applied in the field of screen production process for improving poor exposure, can solve the problems of increasing product rework costs, waste of screen plates, and non-greasing of characters, so as to improve poor exposure, avoid waste of resources, and improve production efficiency. The effect of smooth flow

Inactive Publication Date: 2019-01-11
奥士康精密电路(惠州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Screen printing is mainly used for solder masking and text printing. With the increasingly precise production requirements of circuit boards, the size requirements of text lines are also gradually increasing, and thin text lines are more likely to cause poor exposure of the screen, resulting in Product process time delay and screen waste, such as poor exposure of some lines, causing the text to not be painted, resulting in incomplete positioning and increasing product rework costs

Method used

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  • Screen manufacturing process for reducing poor exposure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 Shown: the present invention provides a screen production process for improving poor exposure, including the following steps: degreasing, degreasing the used screen with a degreasing agent; drying for the first time, degreasing the degreased screen Send it into the oven with a temperature of 45°C to remove the water vapor on the screen; apply photosensitive glue, and apply photosensitive glue on the printing surface of the screen after drying for the first time; dry the second time, apply photosensitive glue The screen plate is sent to the oven, the temperature of the oven is 45°C, and the photosensitive adhesive is dried; it is cooled and placed, and the screen plate after the second drying is cooled and placed; the cooling time is 24 hours; exposure, first confirm the exposure of the screen exposure machine Number of stages, the number of exposure stages is 6, set the exposure time to 50 seconds, put the cooled screen into the screen exposure machine for...

Embodiment 2

[0026] Based on Example 1, the present invention also provides a screen making process for improving poor exposure, further comprising the following steps: degreasing, cleaning the unused screen; drying for the first time, degreasing the The screen plate is sent to the oven with a temperature of 45°C to remove the water vapor on the screen plate; apply photosensitive glue, and apply photosensitive glue on the printing surface of the screen plate after drying for the first time; The screen plate of the photosensitive adhesive is sent to the oven, the temperature of the oven is 45°C, and the photosensitive adhesive is dried; it is cooled and placed, and the screen plate after the second drying is cooled and placed; the cooling time is 48 hours; exposure, first confirm the exposure of the screen plate Machine exposure series, the exposure series is 7, set the exposure time to 50 seconds, put the screen plate after cooling and placement into the screen exposure machine, and expose;...

Embodiment 3

[0028] Based on Embodiment 1 or Embodiment 2, the present invention provides a screen making process for improving poor exposure. Further, when performing exposure, the inside of the exposure machine is in a vacuum state; Air ducts, multiple suction ducts are respectively arranged on both sides and the middle of the screen; the number of suction ducts is 4; the test screen size is a large screen of "1.2m*1.2m" , After the production is completed, there is no bad exposure.

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Abstract

The invention relates to a screen manufacturing process for reducing the poor exposure. According to the screen manufacturing process, the following methods that an exposure ruler of light-sensitive paste is confirmed, and the exposure ruler is made and production parameters are confirmed before production; an air suction guide pipe is additionally arranged and is arranged in the center of a net frame during exposure, and it is guaranteed that the vacuum degree in the net frame is sufficient; and after the storage time for the screen before exposure after the screen is coated with the light-sensitive paste is regulated and controlled, it is suggested that first-coating and first-exposure regulation and control are adopted, and the storage time of the screen after the screen is coated withthe light-sensitive paste is not larger than 48 hours are adopted for improving the production process. The screen manufacturing process for reducing the poor exposure has the beneficial effects thatthat (1) the poor exposure condition of the screen is reduced, the smooth product production process is guaranteed, and resource waste is avoided; and (2) the methods are simple and easy to implement,and the cost is not required to be increased.

Description

technical field [0001] The invention relates to a circuit board production process, in particular to a screen plate production process for improving poor exposure. Background technique [0002] With the rapid development of the communication field, electronic products have become an indispensable entertainment and communication tool for people, and the covers of electronic products are also full of tricks. Screen printing is mainly used for solder masking and text printing. With the increasingly precise production requirements of circuit boards, the size requirements of text lines are also gradually increasing, and thin text lines are more likely to cause poor exposure of the screen, resulting in Product process time delays and screen waste, such as poor exposure of some lines cause the text not to be oiled, resulting in incomplete positioning and increasing product rework costs. Therefore, the quality of the exposure directly affects the quality of the product. Contents ...

Claims

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Application Information

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IPC IPC(8): B41C1/14G03F7/12
CPCB41C1/14G03F7/12
Inventor 王少杰贺波蒋善刚文国堂
Owner 奥士康精密电路(惠州)有限公司