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Ink-jet technology based LED display screen integrative mask

A technology of LED display and display screen, applied in the direction of instruments, identification devices, etc., can solve the problems that the authenticity of color difference cannot meet the requirements of the client, the channeling light and the color difference of the module do not have a good elimination method, etc., to solve the problem of patchwork And chromatic aberration problem, reduce chromatic aberration problem, solve the effect of channeling light

Inactive Publication Date: 2018-06-19
SHENZHEN JINGTAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The COB products realized by the existing technology do not have a good way to eliminate the color difference of light channeling and modules, resulting in the failure to meet the requirements of the client in terms of the authenticity of color difference

Method used

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  • Ink-jet technology based LED display screen integrative mask
  • Ink-jet technology based LED display screen integrative mask
  • Ink-jet technology based LED display screen integrative mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] figure 1 The COB module packaging structure implemented by the existing technology does not have a virtual mask of the ink layer, and there is no good way to eliminate the color difference of the light channeling and the module, resulting in the fact that the color difference cannot meet the client's requirements.

[0021] To optimize existing technologies such as figure 2 and image 3 As shown, the PCB substrate 4 with IC is solidified and wire bonded; the PCB substrate 4 after wire bonding is molded and sealed; the surface of the adhesive layer of the packaging adhesive 3 is subjected to patterned inkjet treatment and ink semi-curing, An integrated mask is formed between the pixel units 2 of the COB display screen; and then the ink is baked and solidified.

[0022] On the surface of the COB module, jet printing technology is used to realize "well" jet printing, so that the virtual mask 1 of "well" is realized between the single pixel units 2. The distance between ...

Embodiment 2

[0026] This embodiment is similar to Embodiment 1, the difference is that, as Figure 4 and Figure 5 As shown, on the surface of the COB module, the jet printing technology is used to realize the "well"-shaped jet printing, so that the "well"-shaped virtual mask 1 is realized between the 2*2 pixel units 2 . There are 4 pixel units 2 in the virtual mask 1 of the well, while Embodiment 1 is a single pixel unit 2, which can be printed according to the actual demand effect and the spacing of the pixel units 2.

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Abstract

The invention relates to the field of LED display, in particular to an ink-jet technology based LED display screen integrative mask which comprises a PCB substrate with IC; the surface of the PCB substrate is provided with a plurality of COB display screen pixels and is protected by a packaging adhesive in a sealing manner, wherein die bonding and wire bonding are performed on the PCB substrate with the IC; die processing and adhesive sealing are performed on the PCB substrate after wire bonding; graphic ink jetting treatment and printing ink semi-solidification are performed on colloid surface of the packaging adhesive, and an integrative mask is formed among the COB display screen pixels; and then roasting and solidification are performed on printing ink. The ink-jet technology based LEDdisplay screen integrative mask provided by the invention can solve the problems of splicing seams and a color difference among different modules of a COB display screen and can also solve the problem of light breakthrough among the pixels.

Description

technical field [0001] The invention relates to the field of LED display, and more specifically relates to an integrated mask for LED display screen based on inkjet technology. Background technique [0002] In the field of small-pitch LED display, COB display has become a star product in the market. With the maturity of COB packaging technology, it is expected that COB will become the mainstream product of small-pitch trial production in 2020, with a market share of more than 60%. The COB products realized by the existing technology do not have a good method to eliminate the color difference of the light channeling and the module, which leads to the inability to meet the requirements of the client in terms of the authenticity of the color difference. Contents of the invention [0003] The invention adopts inkjet technology to realize the integrated mask, and performs inkjet treatment on the surface of the COB package to realize the integrated mask, solves the problem of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33
Inventor 龚文邵鹏睿沈振辉
Owner SHENZHEN JINGTAI
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