CN107777889B - Frit, display device and display screen - Google Patents
Frit, display device and display screen Download PDFInfo
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- CN107777889B CN107777889B CN201711058798.5A CN201711058798A CN107777889B CN 107777889 B CN107777889 B CN 107777889B CN 201711058798 A CN201711058798 A CN 201711058798A CN 107777889 B CN107777889 B CN 107777889B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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Abstract
The invention relates to a frit, a display device and a display screen, wherein the frit comprises: glass particles and metal nanoparticles; the glass particles are uniformly mixed with the metal nanoparticles; the metal nano particles are made of metal. Through mixing the metal nanoparticle of metal material in the glass granule, under laser irradiation, the metal nanoparticle can be well with laser reflection, the receiving area of glass granule to the laser has been increased, make the glass granule can obtain fully shining of laser, make the glass granule melt fast, encapsulate components and parts, make encapsulation effect preferred, and because the glass granule can melt fast, consequently, can adopt the lower laser of power to shine, avoid too high temperature to lead to the fact the damage, the product yield of components and parts has effectively been improved.
Description
Technical Field
The invention relates to the technical field of electronic component packaging, in particular to a glass material, a display device and a display screen.
Background
The OLED (Organic Light-Emitting Diode) display technology is widely used in display screens of electronic devices.
In order to prolong the service life of the OLED device, the OLED device is usually encapsulated by an encapsulation layer, so as to prevent external oxygen and water vapor from entering the OLED device to affect the performance of an organic light emitting layer in the OLED device.
At present, the hard-screen OLED device packaging layer material generally adopts frit as a packaging material, the frit is filled in a sealing area between an upper substrate and a lower substrate of the OLED device, and the frit is irradiated by laser to be melted to form the packaging layer connecting the upper substrate and the lower substrate.
In order to turn on the OLED device to emit light, leads are required to power the OLED device, and the LTPS (Low Temperature Poly-silicon) backplane of the OLED device contains a large number of leads that also need to be connected to an external IC (Integrated Circuit). The encapsulation frit is disposed over the leads, which pass under the frit. In order to achieve a good encapsulation effect by melting the frit sufficiently, a large amount of laser energy is required. However, the LTPS backplane has a low melting point of the leads and a small diameter of the leads, and although the frit is sufficiently melted by the large laser energy to achieve a good packaging effect, the LTPS backplane leads are also melted at the same time, which causes circuit disconnection. Reducing the laser energy protects the LTPS lead from melting by the burn, but does not melt the frit. Therefore, the contradiction between the two is difficult to balance in production, the packaging yield is low, the packaging failure directly causes the failure of the OLED device, and the final product yield is low.
Disclosure of Invention
Based on this, there is a need for a frit, a display device and a display screen.
A frit, comprising: glass particles and metal nanoparticles;
the glass particles and the metal nanoparticles are uniformly mixed, and the metal nanoparticles are made of metal.
In one embodiment, the metal nanoparticles have a particle size of 10nm to 200 nm.
In one embodiment, the metal nanoparticles are cylindrical in shape.
In one embodiment, the metal nanoparticles have a triangular cross-section.
In one embodiment, the metal nanoparticles are spherical in shape.
In one embodiment, the metal nanoparticles are made of gold.
In one embodiment, the metal nanoparticles are made of silver.
In one embodiment, the metal nanoparticles are made of titanium.
A display device comprising an encapsulation layer, the encapsulation layer being made using the frit described in any of the embodiments above.
A display screen comprises the display device in the embodiment.
Above-mentioned frit, display device and display screen, metal nanoparticle through mixing metal material in the glass granule, under laser irradiation, metal nanoparticle can be well with laser reflection, the area of receiving of glass granule to laser has been increased, make the glass granule can obtain fully shining of laser, make the glass granule melt fast, encapsulate components and parts, make the encapsulation effect preferred, and because the glass granule can melt fast, therefore, can adopt the laser that the power is lower to shine, avoid too high temperature to cause the damage to the lead wire, the product yield of components and parts has effectively been improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a display device according to an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
For example, a glass frit comprising glass particles and metal nanoparticles; the glass particles and the metal nanoparticles are uniformly mixed, and the particle size of the metal nanoparticles is 10-200 nm; the metal nano particles are made of metal.
In the above embodiment, through the metal nanoparticle who mixes the metal material in the glass granule, under laser irradiation, the metal nanoparticle can be well with laser reflection, the receiving area of glass granule to the laser has been increased, make the glass granule can obtain fully shining of laser, make the glass granule melt fast, encapsulate components and parts, make the encapsulation effect preferred, and because the glass granule can melt fast, therefore, can adopt the lower laser of power to shine, avoid too high temperature to cause the damage to the lead wire, the product yield of components and parts has effectively been improved.
In one embodiment, there is provided a frit comprising: glass particles and metal nanoparticles; the glass particles are uniformly mixed with the metal nanoparticles; the metal nano particles are made of metal.
Specifically, the glass particles may also be referred to as glass frit, i.e., the glass particles are in the form of a powder of fine particles, for example, the glass particles have a particle size of 0.5 μm to 4.5 μm, for example, the glass particles have a particle size of 0.54 μm to 4.25 μm. For example, the metal nanoparticles have a particle size of 10nm to 200nm, the metal nanoparticles are made of metal, for example, the metal nanoparticles are made of metal capable of generating surface plasmon resonance and near field enhancement effect, it should be understood that the metal surface is smooth and has high reflectivity, the metal nanoparticles are uniformly distributed because the glass particles and the metal nanoparticles are uniformly mixed, and the scattering cross section area of the incident light is far larger than the geometric cross section area of the metal nanoparticles when the metal nanoparticles are made of metal, so that the scattering range is wider, the metal nanoparticles can scatter light in all directions after receiving the light, on one hand, the scattering enables the light to be fully received by the glass particles, and on the other hand, the propagation stroke of the light is increased, like this, the luminous flux that the glass granule received has been increased, make the glass granule can fully absorb the energy of laser, in addition, because the metal nanoparticle of metal material has better heat conductivity, can further carry out the heat conduction to the frit, accelerate the melting of glass granule, make the glass granule under the shining of the laser of lower power, also can melt fast, the laser irradiation effect that has the preferred, make the encapsulation effect preferred, and the laser of lower power can effectively avoid causing the influence to the lead wire on the low temperature polycrystalline silicon layer, effectively avoid the lead wire to melt, the destruction of lead wire on the components and parts has been avoided, the product yield of components and parts has been improved.
In addition, the metal nanoparticles have a near-field enhancement effect, under the illumination condition, the surface plasma of the metal nanoparticles can limit the electromagnetic field in a smaller range, so that the local field intensity is greatly increased and is higher than the incident field intensity by several orders of magnitude, the near-field enhancement effect is formed, and most incident light energy can be coupled into the glass particles, thereby promoting the absorption of glass particle laser and further improving the melting efficiency of the glass particles.
It should be understood that, the metal nanoparticles are made of metal, the metal nanoparticles are not melted, the number of the metal nanoparticles in the frit is not too large, the excessive metal nanoparticles may cause a low rate of overall melting of the frit, which may affect the encapsulation effect of the frit, and the number of the metal nanoparticles is not too small, the too small metal nanoparticles may not significantly increase scattering of the laser, which is not beneficial to scattering of the laser, so that the glass particles may not sufficiently absorb energy of the laser, therefore, in order to make the encapsulation effect better and improve the melting efficiency of the glass particles, in an embodiment, the mass ratio of the metal nanoparticles to the glass particles in the frit is 1: (18-200), for example, the mass ratio of the metal nanoparticles to the glass particles in the glass frit is 1: (19-199), for example, each part by mass of the glass frit comprises 0.005-0.05 part by mass of metal nanoparticles and 0.95-0.995 part by mass of glass particles, for example, the mass proportion of the metal nanoparticles in the glass frit is 0.5% -5%, in this embodiment, the mass proportion of the metal nanoparticles in the glass frit is 0.5% -5%, on one hand, the glass frit can have a high laser scattering rate, so that the glass particles can be rapidly melted without being irradiated by high-power laser, thereby avoiding affecting a lead, on the other hand, the overall melting rate of the glass frit is not affected due to the small mass of the filler particles, and thus the encapsulation effect of the glass frit is better.
In order to further improve the melting efficiency of the glass frit and make the encapsulation effect better, for example, the mass ratio of the metal nanoparticles in the glass frit is 1.5% to 3%, in this embodiment, the mass ratio of the metal nanoparticles in the glass frit is 1.5% to 3%, which can further increase the scattering of laser, is beneficial to the absorption of the energy of the laser by the glass particles, and the metal nanoparticles can conduct heat better, so that the glass particles are melted quickly.
In order to increase the scattering rate of the laser and increase the absorption rate of the glass particles to the energy of the laser, for example, the particle size of the metal nanoparticles is 10nm to 100nm, it should be understood that the particle size of the metal nanoparticles should not be too large, so that the glass frit is not easily melted as a whole, and the particle size of the metal nanoparticles should not be too small, so that the reflectivity of the metal nanoparticles is reduced, and the near field enhancement effect is weakened, so that the melting speed of the glass frit is reduced, therefore, in this embodiment, the particle size of the metal nanoparticles is 10nm to 100nm, so that the melting rate of the glass frit as a whole can be higher, and the reflectivity can be effectively increased, so that the near field enhancement effect is enhanced, the melting speed of the glass frit is increased, and the encapsulation effect is better.
In order to further improve the scattering rate of the laser and further improve the absorption rate of the glass particles to the energy of the laser, for example, the particle size of the metal nanoparticles is 50nm, in this embodiment, the particle size of the metal nanoparticles is 5nm, which can have a strong reflectivity and a strong near field enhancement effect, so that the glass particles can sufficiently absorb the energy of the laser and melt rapidly, and can avoid the influence on the overall melting of the frit, so that the encapsulation effect is better.
In order to increase the scattering direction of the laser light, the scattering rate of the filler particles is increased, and the metal nanoparticles have a rectangular parallelepiped shape, for example. For example, the metal nanoparticles are cylindrical in shape. For example, the metal nanoparticles have a triangular cross-section. Cuboid, cylinder or triangle body all have more face, can make metal nanoparticle reflect laser to a plurality of directions to make the laser between the metal nanoparticle also can reflect each other, improve the scattering rate, be favorable to the absorption of glass particle to the energy of laser, accelerate the melting of glass particle.
In order to further improve the scattering rate, for example, the metal nanoparticles are shaped as polyhedrons, for example, the metal nanoparticles are shaped as regular polyhedrons, for example, the metal nanoparticles are shaped as irregular polyhedrons, so that the polyhedrons have a plurality of surfaces, and the reflection direction of the laser light by the filler particles can be further increased, thereby further improving the scattering rate.
To further increase the scattering power, in one embodiment, the metal nanoparticles are in the shape of spheres. The spherical surface of the metal nano particles can further increase the reflection direction of the laser, so that the scattering rate is further improved, the glass particles can fully absorb the energy of the laser, and the glass particles are rapidly melted.
In order to increase the scattering rate of the metal nanoparticles, the metal nanoparticles are made of gold, silver, and titanium, for example. For example, the metal nanoparticles include at least one of gold, silver, copper, zinc, titanium, molybdenum, platinum and palladium, the surface of the metal such as gold, silver, copper, zinc, titanium, molybdenum, platinum and palladium has a good luster, can reflect light well, and has a good reflectivity, and the metal such as gold, silver, copper, zinc, titanium, molybdenum, platinum and palladium generates surface plasmon resonance when receiving laser irradiation, so that the scattering range can be effectively expanded, and laser can be sufficiently scattered and further absorbed by the glass particles.
In order to further increase the scattering rate of the metal nanoparticles and enhance the near-field enhancement effect of the metal nanoparticles, for example, the filler particles include gold particles and silver particles, and as another example, the filler particles include gold particles and titanium particles, for example, the mass ratio of the gold particles to the titanium particles is 3:7, for example, the mass ratio of the gold particles to the silver particles is 3:7, in this embodiment, the filler particles include two kinds of particles of gold and silver, and the two kinds of particles are in a ratio of 3:7, because the area of the scattering cross section of the silver particles is more than 10 times of the area of the geometric cross section of the silver particles when the silver particles generate plasma resonance, the scattering rate can be effectively improved, but because the near field enhancement effect of the silver particles is weaker than that of the gold particles, the added gold particles have stronger near field enhancement effect, the local field intensity is greatly increased by a larger range and is higher than the incident field intensity by several orders of magnitude, most of the laser energy can be coupled into the glass particles, and the light absorption of the glass particles is promoted, therefore, in the embodiment, the filling particles formed by mixing the gold particles and the silver particles in the proportion not only can effectively improve the scattering rate, increase the scattering area of the laser, facilitate the full absorption of the glass particles, but also can enable the laser energy to be coupled into the glass particles, the absorption rate of the glass particles to the energy of the laser is improved, the laser sintering efficiency of the glass particles is further improved, and the glass frit can be packaged by adopting the laser with lower power. Furthermore, the volume ratio of the gold particles to the silver particles is (1.5-1.8): 1, and experiments prove that the absorption rate of the glass particles to the energy of the laser is better under the volume ratio. In another embodiment, the mass ratio of the gold particles to the titanium particles is 3:7, and the volume ratio of the gold particles to the titanium particles is (1.6-1.65): 1.
In one embodiment, the glass particles comprise phosphorus pentoxide (P)2O5) And vanadium pentoxide (V)2O5) I.e. the glass particles comprise P2O5Particles and V2O5Particles of P2O5A constituent essential for glass particles, V, for glass-forming bodies2O5Belongs to the framework component of the glass particles and can reduce the glass transition temperature of the glass particles. In addition, V is2O5When the content is too low, the glass transition temperature, V, of the glass particles is not well lowered2O5When the content is too high, the glass particles are easily crystallized in a high-temperature process, and the resistivity is too low, so that the water resistance is reduced. Thus, in the present embodiment, for example, the glass particles include 40 to 60 mass% of the glass particlesP2O518% -40% of V2O5. As another example, the glass particles include 45 to 50 mass% of P2O518% -23% of V2O5. As another example, the glass particles include P in a mass ratio of 50% to 60%2O523% -36% of V2O5. As another example, the glass particles include 60% by mass of P2O540% of V2O5. Therefore, the glass particles have proper glass transition temperature, are not easy to crystallize in a high-temperature process, and have proper resistivity and water resistance.
In one embodiment, to further improve the chemical stability of the glass particles, the glass particles further comprise boron trioxide (B)2O3) I.e. the glass particles also comprise three B2O3Particle B2O3The glass frit has good chemical stability and heat resistance, and a framework of a packaging layer is formed in the process of packaging the glass frit, so that the vitrification range of the glass frit is enlarged. B is2O3And V2O5And P2O5The glass particles have better chemical stability by compounding. In addition, B is2O3When the content is too high, the glass transition temperature of the glass particles tends to increase, and thus, in the present embodiment, for example, the glass particles include P in a mass ratio of 40% to 60%2O518% -36% of V2O53% -4% of B2O3. As another example, the glass particles include 45 to 50 mass% of P2O518% -23% of V2O52.3% -3.4% of B2O3. As another example, the glass particles include 50% by mass of P2O523% of V2O54% of B2O3. In this way, the glass particles are made to have a suitable glass transition temperature, and pass through B2O3And V2O5And P2O5The glass particles have better chemical stability by compounding.
In one embodiment, to further make the glass particles more suitable for encapsulating the organic light emitting display panel, for example, the glass particles further include silicon dioxide (SiO)2) As another example, the glass particles further include bismuth oxide (Bi)2O3) Zinc oxide (ZnO), barium oxide (BaO), alkali metal oxide, alkaline earth metal oxide, aluminum oxide (Al)2O3) Molybdenum trioxide (MoO)3) Zirconium dioxide (ZrO)2) Titanium dioxide (TiO)2) Any one of them. As another example, the alkali metal oxide is Na2O、Li2O and/or K2O; the alkaline earth metal oxide is MgO, CaO, SrO and/or BaO. Wherein, SiO2Is an essential component constituting the glass particles, Bi2O3Is a network component in an encapsulation layer formed by glass frit, ZnO can be used for reducing the softening temperature, the softening temperature refers to the softening temperature when the hardness of the material is changed to 85% of the initial hardness after being heated for 5min and is kept for 2 hours, and the highest temperature is the softening temperature. BaO is used to improve the water resistance of the glass particles. Al (Al)2O3Can be used to improve the stability of the encapsulation layer formed by the frit. Alkali metal oxides can be used to improve the devitrification resistance of the frit, which is an inherent defect of quartz glass and belongs to a thermodynamically unstable metastable state. Alkaline earth metal oxides can be used to improve the stability of the frit.
In one embodiment, the glass particles comprise V2O5And P2O5And also comprises ZrO2、TiO2、MoO3、SiO2、ZnO2And alumina, and also Bi2O3BaO, alkali metal oxide and alkaline earth metal oxide. Through the compounding of the components, the glass particles are more suitable for packaging the organic light-emitting display panel. Furthermore, all elements in the glass particles are compounded with the filler, so that the glass frit slurry is more suitable for packaging the organic light-emitting display panel. For example, ZrO2And ZrW2O8Co-ordination enabling ZrO2And ZrW2O8The thermal expansion coefficient of the formed glass slurry is controlled within a preset range, so that the thermal expansion coefficient of the glass slurry is more controllable. As another example, Al2O3Can effectively improve ZrO2And ZrW2O8Compactness of the formed glass frit paste.
In one embodiment, the frit further comprises a frit solvent comprising ethyl cellulose, isopropyl alcohol, resin, turpentine, and ethanol. In order to enable the glass frit solvent to better dissolve the glass particles, for example, the glass frit solvent comprises the following components in mass ratio: 40 to 50 percent of ethyl cellulose; 24% -25% of isopropanol; 13 to 14 percent of resin; 6 to 9 percent of pine oil; 5 to 9 percent of ethanol. For another example, the glass frit solvent comprises 40-45% of the following components in mass ratio; 24.1 to 24.5 percent of isopropanol; 13 to 13.4 percent of resin; 6 to 7 percent of pine oil; 5 to 6 percent of ethanol. For another example, the glass frit solvent comprises the following components by mass ratio of 44% -49%; 24.3 to 24.8 percent of isopropanol; 13.3 to 13.8 percent of resin; 7.4 to 8.9 percent of pine oil; 5.5 to 8.6 percent of ethanol. For another example, the glass frit solvent comprises the following components in mass ratio: 45% of ethyl cellulose; 24% of isopropanol; 13% of resin; 9% of pine oil; 9 percent of ethanol. According to the glass particles with different mass ratios, the mass ratio of each component in the glass frit solvent is adjusted, so that the glass frit solvent can better dissolve the glass particles, and the glass particles are rapidly melted under laser irradiation.
In one embodiment, a glass frit mixture is provided that includes a glass frit and a filler, the filler including metal nanoparticles. The addition of the metal nanoparticles can confine incident light inside the frit mixture and can increase the optical path of light propagation by scattering the incident light, thereby increasing the absorption and capture of light by the frit mixture. For example, the metal nanoparticles include gold, silver, and the like metal nanoparticles. The shape of the metal nanoparticles includes spherical, triangular, square, rod-like, and the like. The experimental result shows that after the metal nano particles are added, the light received by the glass frit is increased, and the laser sintering effect is excellent under the lower laser power. The good laser processing effect of the glass material is ensured, meanwhile, the LTPS lead is intact, the packaging yield is greatly improved, and the product yield is improved. Further, the shape of the metal nanoparticles is a spherical shape, that is, the original shape of a part of the spherical shape is incomplete, so that the spherical shape has defects or deformities, for example, the remaining part of the spherical shape after being cut by a plane, or the remaining part of the spherical shape after being dug out of a plurality of structures, or the spherical shape is collided to cause deformation; experiments prove that the residual spherical shape can generate a better plasma resonance effect, so that the energy of laser can be better coupled into the glass particles.
The embodiment of the invention provides a glass substrate packaging method, which comprises the steps of using the glass frit mixture when packaging a glass substrate, melting the glass frit mixture in a laser sintering mode, and bonding an upper glass substrate and a lower glass substrate. The laser energy is moderate, the laser can be melted without high power, the light received by the glass frit mixture is increased by adding the metal nano particles, and the laser sintering effect is excellent under lower laser power. Not only ensures the good laser processing effect of the glass frit, but also ensures the LTPS lead to be intact without any damage.
Specifically, the scattering effect and the near field enhancement effect of the metal nanoparticles can improve the absorption rate of the glass powder to the energy of the laser, and the scattering effect of the metal nanoparticles is specifically as follows: for metal nanoparticles, the scattering cross-section of the metal nanoparticles for incident light is much larger than its geometric cross-section when surface plasmon resonance is generated. For example, silver nanoparticles produce plasmon resonance in air, and their scattering cross section is approximately 10 times that of the geometric cross section. Incident light is scattered on the surface of the metal particles for multiple times, so that the travel of a propagation path of the incident light in the glass frit is increased, and the absorption of the glass frit to light is facilitated. Near field enhancement effect: under the condition of illumination, the surface plasma can limit the electromagnetic field in a smaller range, so that the local field intensity is greatly increased and is several orders of magnitude higher than the incident field intensity, a near-field enhancement effect is formed, and most incident light energy can be coupled into the frit, thereby promoting light absorption.
In one embodiment, a display device is provided, comprising an encapsulation layer made using the frit described in any of the above embodiments. For example, the display device is an OLED display device, for example, as shown in fig. 1, the display device 10 includes a first substrate 110, a second substrate 120, a low-temperature polysilicon layer 130, and an OLED device 140, the low-temperature polysilicon layer 130 and the OLED device 140 are disposed between the first substrate 110 and the second substrate 120, and an encapsulation layer 150 is disposed between the first substrate 110 and the second substrate 120, the encapsulation layer 150 is hermetically connected to the first substrate 110 and the second substrate 120, the encapsulation layer 150 is disposed on the low-temperature polysilicon layer 130 and the outer side of the OLED device 140, i.e., the encapsulation layer 150 is encapsulated between the first substrate 110 and the second substrate 120, and is encapsulated at the low-temperature polysilicon layer 130 and the outer side of the OLED device 140, the encapsulation layer 150 seals between the first substrate 110 and the second substrate 120, such that the low-temperature polysilicon layer 130 and the OLED device 140 are sealed between the first substrate 110, the second substrate 120, and the encapsulation layer 150.
Because the encapsulation layer or the material thereof in the embodiment is made of the glass frit in any one of the embodiments, the glass frit can be melted by irradiating the glass frit between the first substrate and the second substrate with laser in the encapsulation process, and the metal nanoparticles made of metal materials are mixed in the glass particles of the glass frit, so that the overall reflectivity of the glass frit is improved, the glass particles can fully absorb the energy of the laser, the glass frit can be rapidly melted under the irradiation of the laser with lower power, further, the melting of the lead on the low-temperature polycrystalline silicon layer is avoided, the damage of the lead is avoided, the encapsulation effect of the display device is better, and the product yield is effectively improved.
In one embodiment, a display screen is provided, comprising the display device described in the above embodiments.
In other embodiments, the frit can also be applied to other electronic components, because the metal nanoparticles made of metal materials are mixed in the glass particles, the overall reflectivity of the frit is improved, when the frit is irradiated by laser and melted, the laser can fully irradiate the inside of the frit, the frit is quickly melted, and the frit can be quickly melted under the irradiation of the laser with lower power, so that the melting of a lead or a wire caused by high temperature is avoided, the damage to the lead or the wire in the electronic component is effectively avoided, the encapsulation of the electronic component is realized, the encapsulation effect is better, and the yield of the electronic component is effectively improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A frit comprising glass particles and metal nanoparticles;
the glass particles and the metal nanoparticles are uniformly mixed, the metal nanoparticles are made of metal, the particle size of the glass particles is 0.5-4.5 microns, the particle size of the metal nanoparticles is 10-200 nm, and the mass ratio of the metal nanoparticles to the glass particles is 1: (18-200), wherein the metal nanoparticles are polyhedral in shape.
2. The frit of claim 1, wherein the glass particles comprise 40% to 60% P by mass2O518% -40% of V2O53% -4% of B2O3The glass frit also comprises a glass frit solvent, and the glass frit solvent comprises the following components in percentage by massThe components are as follows: 40% -50% of ethyl cellulose; 24% -25% of isopropanol; 13% -14% of resin; 6% -9% of pine oil; 5% -9% of ethanol.
3. The frit of claim 1, wherein the metal nanoparticles have a triangular cross-section.
4. The frit according to claim 1, wherein the metal nanoparticles are made of gold.
5. The glass frit according to claim 1, wherein the metal nanoparticles are made of silver.
6. The frit according to claim 1, wherein the metal nanoparticles are made of titanium.
7. A display device comprising an encapsulation layer, wherein the encapsulation layer is made using the frit of any one of claims 1 to 6.
8. A display screen characterized by comprising the display device of claim 7.
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| US20080090034A1 (en) * | 2006-09-18 | 2008-04-17 | Harrison Daniel J | Colored glass frit |
| CN102403466B (en) * | 2011-11-18 | 2014-12-31 | 上海大学 | Laser bonding method for packaging of photoelectric device |
| CN103258892A (en) * | 2012-02-16 | 2013-08-21 | 王广武 | Solar cell panel with air cavity |
| CN103102075B (en) * | 2013-01-21 | 2015-05-06 | 京东方科技集团股份有限公司 | Method and device for sealing with frit and frit |
| CN103553335B (en) * | 2013-10-25 | 2015-11-25 | 上海大学 | Frit and preparation method thereof, sealing method based on frit |
| US9871176B2 (en) * | 2015-02-02 | 2018-01-16 | Ferro Corporation | Glass compositions and glass frit composites for use in optical applications |
| TWI790177B (en) * | 2015-09-04 | 2023-01-11 | 美商康寧公司 | Devices comprising transparent seals and methods for making the same |
| CN107275516B (en) * | 2017-06-21 | 2019-01-29 | 苏州卡睿知光电科技有限公司 | A kind of glass capsulation material for photoelectric device, paste and preparation method thereof |
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