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Covering film type dispensing method of COB technology LED display screen

A technology of LED display screen and film, applied in the direction of instruments, electrical components, circuits, etc., can solve the problem of uneven ink color, and achieve the effect of increasing the reflection area and shortening the string light.

Inactive Publication Date: 2016-10-26
武汉恩倍思科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a COB process LED display cover that can well solve the problem of ink color uniformity in view of the defect that the ink color is easily caused by the COB process display screen in the prior art when it is packaged. film dispensing method

Method used

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  • Covering film type dispensing method of COB technology LED display screen
  • Covering film type dispensing method of COB technology LED display screen

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] The coating type dispensing method of COB process LED display screen of the embodiment of the present invention, as figure 1 shown, including the following steps:

[0025] S1. Customize the well-shaped kit according to the size of the circuit board. The well-shaped kit can be made of pure black neutral insulating material. And cover the blank space of the light-emitting chip on the PCB circuit board to achieve pure black light absorption on the part of the circuit board except the light-emitting crystal, to ensure the uniformity of the ink color on the surface of the PCB, to simulate the li...

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Abstract

The invention discloses a covering film type dispensing method of a COB technology LED display screen. The method comprises steps that a #-shaped set member is customized according to dimensions of a circuit board, the set member covers at a blank of a light emitting chip of a PCB, and liquid crystal packaging is simulated; a glue melting method is employed to melt glue to fill at a lower portion of the #-shaped set member, and the #-shaped set member is in seamless connection with the PCB; after the potting glue is dry, a single-point potting mode is employed for dispensing so as to guarantee light transmission and sealing of the light emitting chip on an LED display screen; after potting of the light emitting chip, a black covering film is employed to realize integral potting of the PCB. Through the method, an inky uniformity problem can be excellently solved.

Description

technical field [0001] The invention relates to the field of packaging of LED display screens, in particular to a coating-type glue dispensing method for LED display screens with a COB process. Background technique [0002] Due to the current COB process display production process, there are generally two types: one is to directly roll the copper foil on the FR-4 epoxy resin substrate of the PCB, and then fix the light-emitting chip. After fixing, directly cover the whole with a layer Transparent epoxy resin film, due to the chromatic aberration of the PCB substrate, the finished display has chromatic aberration, and because the refraction of epoxy resin does not use a reflection mechanism, this process also has cross-lighting; the second type: it is in the first type On the basis of calendering a layer of FR-4 epoxy resin with openings, and then potting the light-emitting chip in the fixed hole position, the cross-light phenomenon can be reduced to a certain extent, but due...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48G09F9/33
CPCH01L33/48G09F9/33
Inventor 周伟江辉
Owner 武汉恩倍思科技有限公司