CN115249445A - Manufacturing method of ultrathin glass-based display module - Google Patents

Abstract

The invention discloses a method for manufacturing an ultra-thin glass-based display module, which is applied to the technical field of display devices, and includes the following steps: S1, using the glass base as a substrate to perform patching of electronic components; S2, inserting LED lights in The LED lamps are fixed on the glass substrate by welding; S3, liquid glue is filled into the gap between the LED lamps, and the gas in the gap is discharged; S4, the surface of the welded glass substrate is coated with a polymer material layer. The invention adopts an ultra-thin glass substrate, so that the thickness of the display module is reduced, and the size of a single display module is small, easy to install, and can be used by splicing; the problems of heat accumulation, low air tightness and uneven coating layer are avoided, The service life of the display module is improved; by setting the distance between the LED lights, the display module can ensure the uniformity of light emission when used alone or when used together.

Description

A method for manufacturing an ultra-thin glass-based display module

technical field

The invention relates to the technical field of display equipment, and more specifically relates to a method for manufacturing an ultra-thin glass-based display module.

Background technique

The LED display module is one of the main components of the finished LED display. At present, glass substrates are becoming more and more popular. Compared with PCB substrates, glass substrates have many advantages: better thermal conductivity, better flatness, and expansion and contraction coefficients. Low, can better support chip packaging, can achieve narrow borders, can make the backplane area larger as needed, and realize infinite splicing. However, when the existing display module is performing the coating process of the coating layer, there are gaps between the LED lamps on the substrate, and between the lamps and the solder joints. After the coating of the coating layer is completed, the coating layer will not be The flatness will affect the display effect of the display module, and the gaps under the coating layer will lead to a decrease in the sealing of the display module, thereby reducing the life of the LED lamp, thereby affecting the life of the entire display module. In the existing technical solutions , by increasing the support layer to ensure the flatness of the coating layer, but this solution will increase the thickness of the display module and cannot be used in splicing. Therefore, a technical solution is urgently needed on the premise of ensuring the size and thickness of the display module Next, solve the problem that the coating layer is uneven, which affects the display effect and display life.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a method for manufacturing an ultra-thin glass-based display module, which can solve the problem of uneven coating film by filling the gap with liquid glue on the premise of ensuring the thickness and size of the display module, ensuring display effect.

In order to achieve the above object, the present invention provides the following technical solutions:

A method for manufacturing an ultra-thin glass-based display module, comprising the following steps:

S1. Use the glass base as the substrate to mount electronic components;

S2, inserting the LED lamp on the glass substrate and fixing the LED lamp by welding;

S3. Fill the liquid glue into the gap between the LED lights, and discharge the gas in the gap;

S4. Coating a polymer material layer on the surface of the welded glass substrate.

Preferably, the S1 is specifically:

S11, printing the solder paste onto the glass substrate;

S12, accurately installing the electronic components on the fixed position of the glass substrate;

S13, melting the solder paste, so that the electronic components and the glass substrate are firmly bonded together;

S14 , inspecting the welding quality and assembly quality of the pasted glass substrate.

Preferably, the distances between the LED lamps in S2 are equal, and the distance between the edge of the glass substrate and the outermost LED lamps of the glass substrate is half of the distance between the LED lamps.

Preferably, the S4 specifically includes: dividing the glass substrate into a plurality of sub-regions, coating each sub-region with an equal amount of polymer material, and forming a coating of the polymer material on the surface of the glass substrate through a pressing module. lamination.

Preferably, after S4, it also includes: S5, performing a test; the test includes a brightness test, a welding test, and an aging test.

Preferably, the thickness of the glass substrate is 1.1mm-1.85mm.

Preferably, the liquid glue in S3 is thermally conductive glue.

It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a method for manufacturing an ultra-thin glass-based display module, which has the following beneficial effects:

1. Ultra-thin glass substrate is used, the material of the coating layer is polymer material, the thickness of the display module is low, and the size of a single display module is small, easy to install, and can be used in multiple splicing;

2. The heat-conducting glue is coated between the LED lights, which avoids the problems of heat accumulation, low air tightness and uneven coating layer, and improves the service life of the display module;

3. By setting the distance between LED lights, the display module can ensure the uniformity of light emission when it is used alone or spliced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 accompanying drawing is the method flowchart of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1:

The embodiment of the present invention discloses a method for manufacturing an ultra-thin glass-based display module, as shown in FIG. 1 , including the following steps:

S1. Use the glass base as the substrate to mount electronic components;

S2, inserting the LED lamp on the glass substrate and fixing the LED lamp by welding;

S3. Fill the gap between the LED lamps with liquid glue, and discharge the gas in the gap; fill the gap with liquid glue, and ensure the flatness of the film layer and discharge the gap when coating the film layer subsequently The gas in it improves the airtightness of the display module;

S4. Coating a polymer material layer on the surface of the welded glass substrate.

Embodiment 2:

The embodiment of the present invention discloses a method for manufacturing an ultra-thin glass-based display module. Based on the first embodiment, S1 is specifically:

S11. Miss printing the solder paste onto the glass substrate; what needs to be understood is that S11 can also be realized by dispensing glue, and the glue is dropped onto the fixed position of the glass substrate through a glue dispensing machine.

S12, accurately installing the electronic components on the fixed position of the glass substrate;

S13, reflow soldering, melting the solder paste, so that the electronic components and the glass substrate are firmly bonded together; what needs to be understood is that when dispensing glue is used, S13 uses curing to melt the patch adhesive, so that the electronic components and the glass substrate are firmly bonded glued together.

S14. Inspection of the welding quality and assembly quality of the glass substrates that have been pasted. It should be understood that, in this embodiment, a magnifying glass, a microscope, an online tester (ICT), a flying probe tester, and an automatic optical inspection can be used. (AOI), X-RAY inspection system, functional tester and other devices to detect whether there are defects such as virtual soldering, missing soldering, and cracks. Before testing the welding quality and assembly quality of the glass substrate, the glass substrate can also be cleaned to remove flux and other substances on the glass substrate.

Embodiment three:

The embodiment of the present invention discloses a method for manufacturing an ultra-thin glass-based display module. On the basis of Embodiment 1, the distance between the LED lamps in S2 is equal, and the distance between the edge of the glass substrate and the outermost LED lamp on the glass substrate The distance is one-half of the distance between the LED lamps; what needs to be understood is that the LED lamps on the glass substrate are equidistantly arranged, and the distance is L, and the distance d from the outermost LED lamp on the glass substrate closest to the edge to the edge is equal to 1/2, that is, d=1/2L, so that after the display modules are spliced into a large screen, the distance L2 between the LED lights on both sides of the splicing seam and the line spacing value L between the two LEDs are roughly equal, each Visually, the LED light looks continuous and emits light evenly, so that the spliced display modules can still display images evenly.

Furthermore, the LED lamp welding method in S2 is wave soldering. Specifically, the LED lamp is inserted into the corresponding hole, and then the flux is pre-coated by wave, foaming or spraying. Since most fluxes must be soldered during soldering, To achieve and maintain an activation temperature to ensure complete wetting of the solder joints, the glass substrate must first pass through a preheating zone before wave soldering. The preheating after flux coating can gradually increase the temperature of the substrate and activate the flux. , can also reduce the thermal shock when the substrate enters the wave peak and evaporate all the moisture that may be absorbed or the carrier solvent that dilutes the flux. The wave soldering uses heat radiation to preheat. After heating, enter the wave crest for soldering. After the soldering is completed, cool down, cut off the excess plug-in pins and check.

Further, S4 specifically includes: dividing the glass substrate into a plurality of sub-regions, coating each sub-region with an equal amount of polymer material, and forming a coating film of the polymer material on the surface of the glass substrate through the pressing module. The material of the coating layer is made uniform by means of simultaneous covering and pressing in different areas, and the flatness of the coating layer is further improved. It should be understood that the polymer material in this embodiment is one of PVB, EVA, epoxy resin, silica gel, and silicone resin.

Further, after S4, it also includes: S5, performing a test; the test includes a brightness test, a welding test, and an aging test. What needs to be understood is that the test items are mainly whether there are dark lights and dead lights in the LED lights, whether the electronic components can work normally, whether there are false welds and false welds in the welding, and whether the signal timing is correct, etc. During the aging test of semi-finished products, the whole screen is lit for more than 72 hours, and the life and attenuation of the LED lamp, the color difference of the display, the quality of the display content and other items are observed.

Further, the thickness of the glass substrate is 1.1mm-1.85mm.

Furthermore, the liquid glue in S3 is heat-conducting glue, which will generate heat and accumulate when the LED lamp is working. Long-term heat accumulation will affect the life of the display module. Filling the heat-conducting glue ensures the flatness and airtightness of the coating layer. Under the premise of improving the heat dissipation efficiency of the display module.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A method for manufacturing an ultra-thin glass-based display module, comprising the following steps: S1. Use the glass base as the substrate to mount electronic components; S2, inserting the LED lamp on the glass substrate and fixing the LED lamp by welding; S3. Fill the liquid glue into the gap between the LED lights, and discharge the gas in the gap; S4. Coating a polymer material layer on the surface of the welded glass substrate. 2. The method for manufacturing an ultra-thin glass-based display module according to claim 1, wherein the S1 is specifically: S11, printing the solder paste onto the glass substrate; S12, accurately installing the electronic components on the fixed position of the glass substrate; S13, melting the solder paste, so that the electronic components and the glass substrate are firmly bonded together; S14 , inspecting the welding quality and assembly quality of the pasted glass substrate. 3. The method for manufacturing an ultra-thin glass-based display module according to claim 1, wherein the distances between the LED lamps in S2 are equal, and the edge of the glass substrate is closest to the glass substrate. The distance between the peripheral LED lights is 1/2 of the distance between the LED lights. 4. The method for manufacturing an ultra-thin glass-based display module according to claim 1, wherein said S4 is specifically: dividing said glass substrate into a plurality of sub-regions, coating each sub-region, etc. A large amount of polymer material is used to form a coating film on the surface of the glass substrate through the pressing module. 5. The manufacturing method of an ultra-thin glass-based display module according to claim 1, characterized in that, after the S4, it also includes: S5, performing a test; the test includes a brightness test, a welding test, and an aging test . 6 . The method for manufacturing an ultra-thin glass-based display module according to claim 1 , wherein the thickness of the glass substrate is 1.1 mm-1.85 mm. 7 . The method for manufacturing an ultra-thin glass-based display module according to claim 1 , wherein the liquid glue in S3 is thermally conductive glue. 8 .

Images