Display panel manufacturing method

Abstract

The invention discloses a method for manufacturing a display panel. The method comprises the following steps of: spraying a layer of opaque material on the inner surface or the outer surface of a transparent or semitransparent part base material; engraving a pattern through which light can penetrate on the opaque material by using laser; when the non-transparent material is sprayed on the inner surface of the part base material, after the non-transparent material is cured, laser engraving is directly carried out on the non-transparent material; when the opaque material is sprayed on the outer surface of the part base material, after the opaque material is cured, a layer of gloss oil is sprayed on the surface of the opaque material, UV light is utilized to irradiate the gloss oil to form a layer of cured film, and then laser engraving is carried out. According to the manufacturing method of the display panel, the process has great flexibility when producing and manufacturing the display pattern, the pattern can be manufactured and displayed on a planar display panel and can also be manufactured and displayed on curved-surface display panels of various shapes or irregular shapes, the process is simple, the cost is low, and the manufacturing method is suitable for large-scale popularization and application. And the flexibility and adaptability are extremely high.

Description

Technical Field

[0001] The invention relates to a method for manufacturing a display panel. Background Art

[0002] In order to display specific patterns on display panels, the processes currently used are generally in-mold labeling, special printing, secondary injection molding and other processes. In-mold labeling requires special molds and equipment, and the labeling process requires precise alignment to avoid misalignment. Special printing requires the use of professional inks and printing technology, and color deviation may occur during the printing process. Whether it is in-mold labeling, special printing or secondary injection molding, the implementation process is relatively complex and costly. In addition, in-mold labeling, special printing, secondary injection molding and other processes cannot display specific patterns on curved or irregularly shaped display panels.

[0003] It can be seen that whether it is possible to provide an improved display panel manufacturing method based on the deficiencies in the prior art has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art and provide a method for manufacturing a display panel.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A method for manufacturing a display panel comprises the following steps:

[0007] Spray a layer of opaque material on the inner or outer surface of a transparent or translucent part substrate;

[0008] Using a laser to carve a pattern on the opaque material that is capable of transmitting light;

[0009] When the opaque material is sprayed on the inner surface of the component substrate, after the opaque material is solidified, the opaque material is directly laser engraved;

[0010] When the opaque material is sprayed on the outer surface of the part substrate, after the opaque material is solidified, a layer of varnish is sprayed on the surface of the opaque material, the varnish is irradiated with UV light to form a solidified film, and then the opaque material is laser engraved.

[0011] In some embodiments, the surface of the part substrate is a curved surface.

[0012] In some embodiments, the part substrate is made of any of the following materials or a combination thereof:

[0013] Transparent ABS, transparent PP, methyl methacrylate PMMA, polystyrene PS, polycarbonate PC, polybis(allyl glycol carbonate) CR-39, styrene acrylonitrile copolymer SAN, poly-4-methylpentene-1TPX and transparent polyamide.

[0014] In some embodiments, when the opaque material is sprayed on the inner surface of the part substrate, the thickness of the opaque material is 0.01-0.3 mm;

[0015] When the opaque material is sprayed on the outer surface of the part substrate, the total thickness of the opaque material and the cured film is 0.01-0.35 mm.

[0016] In some embodiments, the pattern has functional characteristics, and the functional characteristics include any one of the following:

[0017] Light guide, anti-counterfeiting mark, enhanced visual identification.

[0018] In some embodiments, the spraying method includes any one of the following:

[0019] Electrostatic spray, air spray, airless spray, rotary cup spray or powder spray.

[0020] In some embodiments, the laser engraving method includes any one of the following:

[0021] Dot engraving, vector engraving, grayscale engraving, 3D engraving or femtosecond laser engraving.

[0022] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0023] The positive progress of the present invention is that the display panel manufacturing method of the present invention uses laser engraving to display the pattern, which makes the process extremely flexible in producing and manufacturing the display pattern. The pattern can be produced and displayed not only on a flat display panel, but also on a curved or irregular display panel of various shapes. The display panel manufacturing method of this embodiment has a simple process, low cost, high flexibility and adaptability, and saves more than 50% of the cost compared with the traditional process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a flow chart of a method for manufacturing a display panel according to a preferred embodiment of the present invention.

[0025] Figure 2 The figure is a front view of a display panel according to a preferred embodiment of the present invention.

[0026] Figure 3It is a front view of another display panel according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that in the claims and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] like Figure 1 As shown, this embodiment discloses a method for manufacturing a display panel, comprising the following steps:

[0030] Spray a layer of opaque material onto the inner or outer surface of a transparent or translucent part substrate. This step provides the necessary contrast for laser engraving.

[0031] Use laser to carve a pattern that allows light to pass through on an opaque material. This step can accurately form the desired image or text while maintaining the transparency of the substrate. When there is a light source behind the display panel, the light passes through the substrate to display the desired pattern. The display effect is as follows Figure 2 and Figure 3 shown.

[0032] When the opaque material is sprayed on the inner surface of the part substrate, laser engraving can be performed directly on the opaque material after the opaque material is cured.

[0033] When the opaque material is sprayed on the outer surface of the part substrate, after the opaque material is cured, a layer of varnish is sprayed on the surface of the opaque material, the varnish is irradiated with UV light to form a cured film, and then laser engraving is performed on the opaque material. This step can enhance the surface quality of the final product, provide additional protection, make the product surface fastness better and provide aesthetic effects.

[0034] In the display panel manufacturing method of this embodiment, the pattern displayed is engraved by laser, which makes the process extremely flexible in producing and manufacturing the display pattern. The pattern can be manufactured and displayed not only on a flat display panel, but also on various shapes such as Figure 2 and Figure 3 The display panel manufacturing method of this embodiment has simple process, low cost, high flexibility and adaptability, and especially saves more than 50% of the cost compared with the traditional process.

[0035] Furthermore, in this embodiment, the surface of the selected part substrate is a curved surface.

[0036] Furthermore, in this embodiment, the component substrate is made of any of the following materials or a combination thereof:

[0037] Transparent ABS, transparent PP, methyl methacrylate PMMA, polystyrene PS, polycarbonate PC, polybis(allyl glycol carbonate) CR-39, styrene acrylonitrile copolymer SAN, poly-4-methylpentene-1TPX and transparent polyamide.

[0038] Transparent ABS (Acrylonitrile Butadiene Styrene Copolymer): ABS is a common thermoplastic polymer with good mechanical properties and processing properties.

[0039] Transparent PP (polypropylene): PP is a lightweight, heat-resistant plastic with lower transparency than ABS.

[0040] Methyl Methacrylate PMMA (Acrylic or Plexiglas): PMMA is a highly transparent material with excellent optical properties.

[0041] Polystyrene PS: PS is a lightweight, transparent material with good insulating properties.

[0042] Polycarbonate PC: PC is a high-strength, high-transparency engineering plastic with excellent impact toughness and temperature resistance.

[0043] Poly(bisallyl diglycol carbonate) CR-39: CR-39 is a high refractive index polymer used to make eyeglass lenses with good optical properties.

[0044] Styrene acrylonitrile copolymer SAN: SAN is a transparent, tough plastic.

[0045] Poly-4-methylpentene-1TPX: TPX is a high-transparency, high-temperature-resistant engineering plastic suitable for the manufacture of medical devices, packaging materials and precision instruments.

[0046] Transparent Polyamide: Transparent nylon is a material with excellent mechanical properties and chemical resistance, and is often used to make fibers, films and engineered parts.

[0047] Furthermore, in this embodiment, when the opaque material is sprayed on the inner surface of the component substrate, the thickness of the opaque material is 0.01-0.3 mm.

[0048] When the opaque material is sprayed on the outer surface of the part substrate, the total thickness of the opaque material and the cured film is 0.01-0.35 mm.

[0049] In this embodiment, the thickness of the opaque material is 0.01-0.3 mm, which can improve the efficiency of engraving and ensure that there are no impurities in the pattern after engraving. The total thickness of the opaque material and the curing film is 0.01-0.35 mm, which can ensure the firmness of the curing film and make the product surface fastness better.

[0050] Furthermore, in this example, the pattern has at least one functional feature, and the functional features include light guiding, anti-counterfeiting mark, enhanced visual recognition effect, etc.

[0051] The spraying method includes at least one of electrostatic spraying, air spraying, airless spraying, rotary cup spraying or powder spraying.

[0052] Electrostatic spraying uses an electrostatic field to adsorb opaque material particles onto the surface of the substrate under the action of the electric field force, and is suitable for large-scale production.

[0053] Air spraying is the application of opaque materials to substrates using compressed air and is suitable for applications where thicker coatings are required.

[0054] Airless spraying uses a high-pressure pump to spray opaque materials directly onto the substrate, providing a more even coating.

[0055] Spin cup spraying uses the centrifugal force generated by a spinning cup to evenly spray opaque materials onto the substrate, and is suitable for high-viscosity materials.

[0056] Powder coating is the process of spraying opaque material powder onto a substrate by hot melt or electrostatic means to form a uniform coating.

[0057] The laser engraving method includes at least one of dot matrix engraving, vector engraving, grayscale engraving, 3D engraving or femtosecond laser engraving.

[0058] Dot engraving uses laser to engrave on opaque materials point by point to form the desired pattern.

[0059] Vector engraving uses a laser to carve precise lines and shapes along a predetermined path.

[0060] Grayscale engraving is to control the energy and speed of the laser to engrave patterns with different gray levels.

[0061] 3D engraving is the process of engraving a three-dimensional pattern on an opaque material.

[0062] Femtosecond laser engraving uses ultra-short pulse lasers for high-precision engraving, which is suitable for the production of fine patterns.

[0063] The display panel manufacturing method of this embodiment uses laser engraving for the displayed pattern, which makes the process extremely flexible in producing the display pattern. The display panel manufacturing method of this embodiment has a simple process, low cost, high flexibility and adaptability, and has a great cost advantage over traditional processes, especially when manufacturing display panels with complex shapes.

Claims

1. A method for manufacturing a display panel, characterized in that: The following steps are involved: Spray a layer of opaque material on the inner or outer surface of a transparent or translucent part substrate; Using a laser to carve a pattern on the opaque material that is capable of transmitting light; When the opaque material is sprayed on the inner surface of the component substrate, after the opaque material is solidified, the opaque material is directly laser engraved; When the opaque material is sprayed on the outer surface of the part substrate, after the opaque material is solidified, a layer of varnish is sprayed on the surface of the opaque material, the varnish is irradiated with UV light to form a solidified film, and then the opaque material is laser engraved.

2. The method for manufacturing a display panel according to claim 1, wherein: The surface of the part substrate is a curved surface.

3. The method for manufacturing a display panel according to claim 1, wherein: The part substrate is made of any of the following materials or a combination thereof: Transparent ABS, transparent PP, methyl methacrylate PMMA, polystyrene PS, polycarbonate PC, polybis(allyl glycol carbonate) CR-39, styrene acrylonitrile copolymer SAN, poly-4-methylpentene-1TPX and transparent polyamide.

4. The method for manufacturing a display panel according to claim 1, wherein: When the opaque material is sprayed on the inner surface of the part substrate, the thickness of the opaque material is 0.01-0.3 mm; When the opaque material is sprayed on the outer surface of the part substrate, the total thickness of the opaque material and the cured film is 0.01-0.35 mm.

5. The method for manufacturing a display panel according to claim 1, wherein: The pattern has functional characteristics, and the functional characteristics include any one of the following: Light guide, anti-counterfeiting mark, enhanced visual identification.

6. The method for manufacturing a display panel according to claim 1, wherein: The spraying method includes any one of the following: Electrostatic spray, air spray, airless spray, rotary cup spray or powder spray.

7. The method for manufacturing a display panel according to claim 1, wherein: The laser engraving method includes any one of the following: Dot engraving, vector engraving, grayscale engraving, 3D engraving or femtosecond laser engraving.

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