CN111312095A - Blackening treatment process for side surface of printed board for LED transparent display screen - Google Patents
Blackening treatment process for side surface of printed board for LED transparent display screen Download PDFInfo
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- CN111312095A CN111312095A CN202010191510.7A CN202010191510A CN111312095A CN 111312095 A CN111312095 A CN 111312095A CN 202010191510 A CN202010191510 A CN 202010191510A CN 111312095 A CN111312095 A CN 111312095A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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Abstract
The invention discloses a blackening treatment process for the side surface of a printed board for an LED transparent display screen, which comprises the following steps of S3, performing plate edge blackening treatment on the printed board of the display screen: s32, processing the display screen printing plate by using the oxidizing liquid at a certain temperature, oxidizing for a period of time, and washing the display screen printing plate by using clear water in a three-stage manner; s33, processing the display screen printing plate by using the catalytic liquid at a certain temperature, catalyzing for a period of time, and washing the display screen printing plate by using clear water for secondary washing; s34, washing the printing plate for the display screen by using high-pressure water, and then cleaning the printing plate for the display screen by using pure water; s4, performing sand blasting treatment on the surface of the printing plate for the display screen. The invention has the beneficial effects that: the defect that the side surface (grey white or white) of the printed board is inconsistent in color in the processing process is overcome, the position of the base material on the side surface of the printed board can be changed into black, the color of the side surface of the printed board is the same as that of the surface of the printed board, and the surface quality of a product is improved.
Description
Technical Field
The invention relates to the technical field of processing of the side face of a printing plate for a display screen, in particular to a blackening processing technology of the side face of the printing plate for an LED transparent display screen.
Background
The printed board for the LED transparent display screen is rectangular, the structure of the printed board is shown in figure 1, the printed board is formed by combining a plurality of long strips, adjacent long strips are hollowed out, the surfaces of the long strips are black solder resists, dust can be remained on the front side surface of a finished printed board when a front side substrate of the printed board is cut by a forming milling cutter, and the printed board is grey white or white and inconsistent in color. However, these off-white or white colors cannot be completely removed after being cleaned by a cleaning machine, and when a customer assembles and splices a plurality of printed boards together, the colors of the side surfaces (off-white or white) of the printed boards are not consistent, so that the colors of the whole display screen are inconsistent to form a screen, and the product quality is reduced. Therefore, the process for blackening the side surface of the printed board for the LED transparent display screen is needed to solve the defect that the side surface (grey white or white) of the printed board is inconsistent in color in the processing process, change the position of the substrate on the side surface of the printed board into black and improve the surface quality of a product.
Disclosure of Invention
The invention aims to solve the defect that the side surface (grey white or white) of a printed board is inconsistent in color in the processing process, and provides a process for blackening the side surface of the printed board for an LED transparent display screen, which can change the position of a substrate on the side surface of the printed board into black and improve the surface quality of a product.
The purpose of the invention is realized by the following technical scheme: a process for blackening the side surface of a printed board for an LED transparent display screen comprises the following steps:
s1, forming a display screen printed board: cutting, manufacturing an inner layer circuit, etching the inner layer, browning, laminating multiple plates, drilling, depositing copper, plating copper on the whole plate, manufacturing an outer layer circuit, electroplating a pattern, etching the outer layer, printing solder resist and characters in sequence, and finally forming a printing plate for the display screen;
s2, testing the formed display screen printed board, and performing surface treatment on the printed board for the display screen after testing; after surface treatment, checking the printed board for the display screen;
s3, performing plate edge blackening treatment on the display screen printed board, and specifically comprising the following steps:
s31, hole trimming is carried out on the holes on the printing plate for the display screen, after the holes are trimmed, secondary washing is carried out on the printing plate for the display screen by using clean water, and high-pressure washing is carried out on the printing plate for the display screen after the secondary washing;
s32, processing the printed board for the display screen by using the oxidizing liquid at a certain temperature, oxidizing for a period of time, and washing the printed board for the display screen by using clear water in a three-stage manner to clean the oxidizing liquid attached to the printed board;
s33, processing the printed board for the display screen by using the catalytic liquid at a certain temperature, catalyzing for a period of time, and washing the printed board for the display screen by using clean water for the second-stage washing so as to wash away the catalytic liquid attached to the printed board;
s34, washing the printing plate for the display screen by using high-pressure water, and then cleaning the printing plate for the display screen by using pure water;
s35, drying the printed board for the display screen to remove the water on the surface;
s4, performing sand blasting treatment on the surface of the printing plate for the display screen;
s5, after sand blasting, carrying out surface treatment on the printing plate for the display screen; after the surface treatment, the printed board for display screen is inspected.
The oxidizing liquid is boric acid or sodium permanganate.
The catalytic liquid is 1980A or 1980B-MU.
The pressing process in step S1 is to stack a plurality of substrates together, use a prepreg as an adhesive, and then thermally press the stacked substrates into a multi-layer board by a hot press.
The drying process in step S35 is to dry the moisture adhering to each substrate using an oven.
The invention has the following advantages:
the printed board can change the side base material position of the printed board into black under certain temperature and time in the oxidizing liquid and the catalyzing liquid, so that the color of the printed board is the same as the surface color of the printed board.
The invention solves the problem that the color of the whole display screen is different due to the fact that the color of the side face (grey white or white) of the printed board is different in the processing process, the process ensures that the color of the side face of the printed board is the same as that of the surface of the printed board, and the problem of screen blooming after assembly is solved.
Drawings
FIG. 1 is a schematic structural diagram of a printed board for an LED transparent display screen.
Fig. 2 is a schematic diagram of the temperature range for use of the oxidizing agent and the catalyzing agent.
Detailed Description
The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:
the first embodiment is as follows: a process for blackening the side surface of a printed board for an LED transparent display screen comprises the following steps:
s1, forming a display screen printed board: cutting, manufacturing an inner layer circuit, etching the inner layer, browning, laminating multiple plates, drilling, depositing copper, plating copper on the whole plate, manufacturing an outer layer circuit, electroplating a pattern, etching the outer layer, printing solder resist and characters in sequence, and finally forming a printing plate for the display screen;
s2, testing the formed display screen printed board, and performing surface treatment on the printed board for the display screen after testing; after surface treatment, checking the printed board for the display screen;
s3, performing plate edge blackening treatment on the display screen printed board, and specifically comprising the following steps:
s31, hole trimming is carried out on the holes on the printing plate for the display screen, after the holes are trimmed, secondary washing is carried out on the printing plate for the display screen by using clean water, and high-pressure washing is carried out on the printing plate for the display screen after the secondary washing;
s32, processing the printed board for the display screen by using oxidizing solution sodium permanganate at a certain temperature, oxidizing for a period of time, and washing the printed board for the display screen by using clear water in a three-stage manner to clean the oxidizing solution attached to the printed board;
s33, processing the display screen printing plate at a certain temperature by using a catalytic liquid 1980A, and after catalyzing for a period of time, performing secondary washing on the display screen printing plate by using clear water to wash away the catalytic liquid attached to the printing plate;
s34, washing the printing plate for the display screen by using high-pressure water, and then cleaning the printing plate for the display screen by using pure water;
s35, drying the printed board for the display screen to remove the water on the surface;
s4, performing sand blasting treatment on the surface of the printing plate for the display screen;
s5, after sand blasting, performing surface treatment on the display screen printing plate, wherein the purpose of the sand blasting is to remove yellow on characters and expose white characters; after the surface treatment, the printed board for display screen is inspected.
The pressing process in step S1 is to stack a plurality of substrates together, use a prepreg as an adhesive, and then thermally press the stacked substrates into a multi-layer board by a hot press. The drying process in step S35 is to dry the moisture adhering to each substrate using an oven.
The observation of the final product revealed that: the printed board can change the side base material position of the printed board into black under certain temperature and time in the oxidizing liquid and the catalyzing liquid, so that the color of the printed board is the same as the surface color of the printed board. Therefore, the process solves the problem that the color of the whole display screen is different due to the fact that the color of the side face (grey white or white) of the printed board is different in the processing process, ensures that the color of the side face of the printed board is the same as that of the surface of the printed board, and solves the problem of screen splash after assembly.
Example two: a process for blackening the side surface of a printed board for an LED transparent display screen comprises the following steps:
s1, forming a display screen printed board: cutting, manufacturing an inner layer circuit, etching the inner layer, browning, laminating multiple plates, drilling, depositing copper, plating copper on the whole plate, manufacturing an outer layer circuit, electroplating a pattern, etching the outer layer, printing solder resist and characters in sequence, and finally forming a printing plate for the display screen;
s2, testing the formed display screen printed board, and performing surface treatment on the printed board for the display screen after testing; after surface treatment, checking the printed board for the display screen;
s3, performing plate edge blackening treatment on the display screen printed board, and specifically comprising the following steps:
s31, hole trimming is carried out on the holes on the printing plate for the display screen, after the holes are trimmed, secondary washing is carried out on the printing plate for the display screen by using clean water, and high-pressure washing is carried out on the printing plate for the display screen after the secondary washing;
s32, processing the printed board for the display screen by using boric acid of an oxidizing solution at a certain temperature, oxidizing for a period of time, and washing the printed board for the display screen by using clear water in a three-stage manner to clean the oxidizing solution attached to the printed board;
s33, processing the display screen printing plate at a certain temperature by using a catalytic liquid 1980B-MU, catalyzing for a period of time, and performing secondary washing on the display screen printing plate by using clean water to wash away the catalytic liquid attached to the printing plate;
s34, washing the printing plate for the display screen by using high-pressure water, and then cleaning the printing plate for the display screen by using pure water;
s35, drying the printed board for the display screen to remove the water on the surface;
s4, performing sand blasting treatment on the surface of the printing plate for the display screen;
s5, after sand blasting, performing surface treatment on the display screen printing plate, wherein the purpose of the sand blasting is to remove yellow on characters and expose white characters; after the surface treatment, the printed board for display screen is inspected.
The pressing process in step S1 is to stack a plurality of substrates together, use a prepreg as an adhesive, and then thermally press the stacked substrates into a multi-layer board by a hot press.
The drying process in step S35 is to dry the moisture adhering to each substrate using an oven.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The side blackening treatment process of the printed board for the LED transparent display screen is characterized by comprising the following steps of: it comprises the following steps:
s1, forming a display screen printed board: cutting, manufacturing an inner layer circuit, etching the inner layer, browning, laminating multiple plates, drilling, depositing copper, plating copper on the whole plate, manufacturing an outer layer circuit, electroplating a pattern, etching the outer layer, printing solder resist and characters in sequence, and finally forming a printing plate for the display screen;
s2, testing the formed display screen printed board, and performing surface treatment on the printed board for the display screen after testing; after surface treatment, checking the printed board for the display screen;
s3, performing plate edge blackening treatment on the display screen printed board, and specifically comprising the following steps:
s31, hole trimming is carried out on the holes on the printing plate for the display screen, after the holes are trimmed, secondary washing is carried out on the printing plate for the display screen by using clean water, and high-pressure washing is carried out on the printing plate for the display screen after the secondary washing;
s32, processing the printed board for the display screen by using the oxidizing liquid at a certain temperature, oxidizing for a period of time, and washing the printed board for the display screen by using clear water in a three-stage manner to clean the oxidizing liquid attached to the printed board;
s33, processing the printed board for the display screen by using the catalytic liquid at a certain temperature, catalyzing for a period of time, and washing the printed board for the display screen by using clean water for the second-stage washing so as to wash away the catalytic liquid attached to the printed board;
s34, washing the printing plate for the display screen by using high-pressure water, and then cleaning the printing plate for the display screen by using pure water;
s35, drying the printed board for the display screen to remove the water on the surface;
s4, performing sand blasting treatment on the surface of the printing plate for the display screen;
s5, after sand blasting, carrying out surface treatment on the printing plate for the display screen; after the surface treatment, the printed board for display screen is inspected.
2. The process for blackening the side surface of the printing plate for the LED transparent display screen according to claim 1, wherein the process comprises the following steps: the oxidizing liquid is boric acid or sodium permanganate.
3. The process for blackening the side surface of the printing plate for the LED transparent display screen according to claim 1, wherein the process comprises the following steps: the catalytic liquid is 1980A or 1980B-MU.
4. The process for blackening the side surface of the printing plate for the LED transparent display screen according to claim 1, wherein the process comprises the following steps: the pressing process in step S1 is to stack a plurality of substrates together, use a prepreg as an adhesive, and then thermally press the stacked substrates into a multi-layer board by a hot press.
5. The process for blackening the side surface of the printing plate for the LED transparent display screen according to claim 1, wherein the process comprises the following steps: the drying process in step S35 is to dry the moisture adhering to each substrate using an oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191510.7A CN111312095A (en) | 2020-03-18 | 2020-03-18 | Blackening treatment process for side surface of printed board for LED transparent display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191510.7A CN111312095A (en) | 2020-03-18 | 2020-03-18 | Blackening treatment process for side surface of printed board for LED transparent display screen |
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| CN111312095A true CN111312095A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010191510.7A Pending CN111312095A (en) | 2020-03-18 | 2020-03-18 | Blackening treatment process for side surface of printed board for LED transparent display screen |
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| CN103233255A (en) * | 2013-05-06 | 2013-08-07 | 深圳市精诚达电路科技股份有限公司 | Direct electroplating process for flexible printed circuit board |
| CN103582304A (en) * | 2012-07-30 | 2014-02-12 | 富葵精密组件(深圳)有限公司 | Transparent printed circuit board and manufacturing method thereof |
| CN105163523A (en) * | 2015-08-04 | 2015-12-16 | 永利电子铜陵有限公司 | Super-thick copper etching technique for PCB |
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2020
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| CN106982521A (en) * | 2017-03-22 | 2017-07-25 | 深圳崇达多层线路板有限公司 | A kind of copper-plated preparation method of high thickness to diameter ratio printed circuit board through hole |
| KR20190083041A (en) * | 2018-01-03 | 2019-07-11 | 주식회사 한경티엔씨 | Manufacturing Method of mixed metal oxide electrode for PCB |
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Application publication date: 20200619 |
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