CN112010561B

CN112010561B - Packaging glass

Info

Publication number: CN112010561B
Application number: CN202010979649.8A
Authority: CN
Inventors: 郝良振; 毛露路; 匡波; 李赛
Original assignee: CDGM Glass Co Ltd
Current assignee: CDGM Glass Co Ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2022-04-15
Anticipated expiration: 2040-09-17
Also published as: CN112010561A

Abstract

The invention provides packaging glass, which comprises the following components in percentage by weight: SiO 2₂：55～75％；Al₂O₃：2～15％；B₂O₃：10～20％；Li₂O：0～12％；Na₂O：0～10％；K₂O: 0 to 10% of Al₂O₃/B₂O₃0.17 to 1.2, 3.5K₂O+4.5Na₂O+6Li₂O is 40 to 70 percent. Through reasonable component design, the glass obtained by the invention has low transition temperature, excellent chemical stability and linear expansion coefficient which can be matched with ceramics, and is suitable for the field of ceramic packaging.

Description

Packaging glass

Technical Field

The invention relates to an electronic packaging material, in particular to packaging glass used in microelectronic ceramic packaging and a packaging element made of the packaging glass.

Background

The ceramic packaging technology has the characteristics of good air tightness, high chemical stability, high mechanical strength, simple packaging process and the like, and has wide market prospect and development space. In the ceramic packaging technique, the packaging glass may be used as solder glass for sealing the ceramic base and the upper lid. Glasses used in the packaging field are required to meet the following performance requirements: 1) the linear expansion coefficient of the glass can be matched with the ceramic to be welded, so that the air tightness of the packaging element is not damaged at different working temperatures; 2) the glass has excellent chemical stability to ensure that the packaging element keeps durability when in contact with acid, alkali, water, air or other media; 3) the glass transition temperature is low to ensure that the encapsulation process is performed at as low a temperature as possible.

CN1258489A discloses a tin phosphate-based encapsulating glass, which can be adjusted to have a linear expansion coefficient of 60X 10 by adding a filler^-7/K～100×10^-7The glass contains 30 to 70 mol% of SnO and 20 to 45 mol% of P₂O₅And 0.1-25% of lanthanide oxide, the glass has poor chemical stability.

Disclosure of Invention

The invention aims to solve the technical problem of providing the packaging glass which has excellent chemical stability and linear expansion coefficient matched with ceramics and can be used for ceramic packaging.

The technical scheme adopted by the invention for solving the technical problem is as follows:

(1) the packaging glass comprises the following components in percentage by weight: SiO 2₂：55～75％；Al₂O₃：2～15％；B₂O₃：10～20％；Li₂O：0～12％；Na₂O：0～10％；K₂O: 0 to 10% of Al₂O₃/B₂O₃0.17 to 1.2, 3.5K₂O+4.5Na₂O+6Li₂O is 40 to 70 percent.

(2) The packaging glass according to 1, which comprises the following components in percentage by weight: and (3) RO: 0 to 10 percent; and/or ZnO: 0 to 5 percent; and/or ZrO₂: 0-5%, wherein the RO is one or more of MgO, CaO, SrO and BaO.

(3) The packaging glass comprises the following components in percentage by weight: SiO 2₂：55～75％，Al₂O₃+B₂O₃: 14 to 30% of Al₂O₃/B₂O₃0.17 to 1.2, the transition temperature T of the encapsulating glass_gHas a linear expansion coefficient alpha of 60 x 10 at a temperature of 520 ℃ or lower^-7/K～73×10^-7/K。

(4) The sealing glass according to (3), which comprises the following components in percentage by weight: li₂O: 0 to 12 percent; and/or Na₂O: 0 to 10 percent; and/or K₂O: 0 to 10 percent; and/or RO: 0 to 10 percent; and/or ZnO: 0 to 5 percent; and/or ZrO₂: 0-5%, wherein the RO is one or more of MgO, CaO, SrO and BaO.

(5) The packaging glass has the composition expressed by weight percentage and is made of SiO₂：55～75％；Al₂O₃：2～15％；B₂O₃：10～20％；Li₂O：0～12％；Na₂O：0～10％；K₂O：0～10％；RO：0～10％；ZnO：0～5％；ZrO₂: 0 to 5% of Al₂O₃/B₂O₃0.17 to 1.2, 3.5K₂O+4.5Na₂O+6Li₂O is 40-70%, and the RO is one or more of MgO, CaO, SrO and BaO.

(6) The sealing glass according to any one of (1) to (5), wherein the components are expressed by weight percentage：Li₂O+Na₂O+K₂O is 5 to 20%, preferably Li₂O+Na₂O+K₂O is 6 to 18%, and Li is more preferable₂O+Na₂O+K₂O is 8-15%.

(7) The sealing glass according to any one of (1) to (5), which comprises the following components in percentage by weight: 3.5K₂O+4.5Na₂O+6Li₂O is 40 to 70%, preferably 3.5K₂O+4.5Na₂O+6Li₂O is 45 to 68%, more preferably 3.5K₂O+4.5Na₂O+6Li₂O is 50 to 65%.

(8) The sealing glass according to any one of (1) to (5), which comprises the following components in percentage by weight: SiO 2₂+Al₂O₃65-80%, preferably SiO₂+Al₂O₃68 to 78%, more preferably SiO₂+Al₂O₃70 to 76%.

(9) The sealing glass according to any one of (1) to (5), which comprises the following components in percentage by weight: al (Al)₂O₃/B₂O₃0.25 to 0.9, preferably Al₂O₃/B₂O₃0.3 to 0.7.

(10) The sealing glass according to any one of (1) to (5), which comprises the following components in percentage by weight: SiO 2₂/B₂O₃3.0 to 7.3, preferably SiO₂/B₂O₃3.5 to 6.5, more preferably SiO₂/B₂O₃Is 3.8 to 5.5.

(11) The sealing glass according to any one of (1) to (5), which comprises the following components in percentage by weight: al (Al)₂O₃+B₂O₃14 to 30%, preferably Al₂O₃+B₂O₃16 to 28%, more preferably Al₂O₃+B₂O₃Is 18 to 26%.

(12) The sealing glass according to any one of (1) to (5), which comprises the following components in percentage by weight: SiO 2₂/(Li₂O+Na₂O) is 3.0 to 14.0, preferably SiO₂/(Li₂O+Na₂O) is 4.0 to 12.0, and SiO is more preferable₂/(Li₂O+Na₂O) is 5.0 to 9.0.

(13) The sealing glass according to any one of (1) to (5), which comprises the following components in percentage by weight: SiO 2₂: 60-70%, preferably SiO₂: 62-68%; and/or Al₂O₃: 4-12%, preferably Al₂O₃: 5-10%; and/or B₂O₃: 11 to 18%, preferably B₂O₃: 12-17%; and/or Li₂O: 2 to 10%, preferably Li₂O: 3-8%; and/or Na₂O: 1 to 8%, preferably Na₂O: 2-6%; and/or K₂O: 0 to 5%, preferably K₂O: 0-2%; and/or RO: 0-6%, preferably RO: 0 to 3 percent; and/or ZnO: 0-2%; and/or ZrO₂: 0-2%, and the RO is one or more of MgO, CaO, SrO and BaO.

(14) The sealing glass according to any one of (1) to (4), which further comprises, in terms of weight percent: f: 0 to 1 percent.

(15) The sealing glass according to any one of (1) to (5), wherein SnO is not contained in the composition; and/or does not contain P₂O₅(ii) a And/or does not contain RO; and/or does not contain K₂O; and/or no ZnO; and/or does not contain ZrO₂(ii) a And/or does not contain F; and/or does not contain CeO₂(ii) a And/or does not contain Ln₂O₃RO is one or more of MgO, CaO, SrO and BaO, Ln₂O₃Is La₂O₃、Gd₂O₃、Y₂O₃、Yb₂O₃One or more of (a).

(16) The sealing glass according to any one of (1) to (5), wherein the sealing glass has a transition temperature T_g520 ℃ or lower, preferably 510 ℃ or lower, more preferably 500 ℃ or lower; and/or the linear expansion coefficient alpha of the packaging glass is 60 multiplied by 10^-7/K～73×10^-7Preferably 62X 10,/K^-7/K～70×10^-7More preferably 63X 10,/K^-7/K～69×10^-7K; and/or the durability of the encapsulating glassStability to Water action D_WIs 2 or more, preferably 1; and/or stability of the encapsulation glass against acid action D_AIs 2 or more, preferably 1; and/or transmittance tau of the encapsulating glass_280nmIs 0.73 or more, preferably 0.75 or more, more preferably 0.78 or more, and further preferably 0.80 or more.

(17) A sealing member, which is made of the sealing glass according to any one of claims (1) to (16).

The invention has the beneficial effects that: through reasonable component design, the glass obtained by the invention has low transition temperature, excellent chemical stability and linear expansion coefficient which can be matched with ceramics, and is suitable for the field of ceramic packaging.

Detailed Description

The following describes in detail an embodiment of the sealing glass of the present invention, but the present invention is not limited to the embodiment described below, and can be implemented with appropriate modifications within the scope of the object of the present invention. Note that, although the description of the overlapping portions may be appropriately omitted, the gist of the present invention is not limited thereto, and the sealing glass of the present invention may be simply referred to as glass in the following description.

[ packaging glass ]

The ranges of the components of the encapsulating glass according to the invention are explained below. In the present specification, the contents and total contents of the respective components are all expressed in terms of weight percent (wt%) relative to the total amount of glass matter converted into the composition of oxides, if not specifically stated. Here, the "composition converted to oxides" means that when oxides, complex salts, hydroxides, and the like used as raw materials of the constituent components of the sealing glass of the present invention are decomposed in the molten state and converted to oxides, the total amount of the oxides is 100%.

Unless otherwise indicated herein, the numerical ranges set forth herein include upper and lower values, and the terms "above" and "below" include the endpoints, and all integers and fractions within the range, and are not limited to the specific values listed in the defined range. As used herein, "and/or" is inclusive, e.g., "A and/or B," and means A alone, B alone, or both A and B.

< essential Components and optional Components >

SiO₂Is a network former of the glass of the invention, when the content thereof is less than 55%, the chemical stability of the glass is remarkably reduced; when the content thereof is more than 75%, the melting of the glass becomes difficult. On the other hand, SiO₂Too high a content causes an increase in the glass transition temperature, resulting in a decrease in the sealing property. Thus, SiO in the present invention₂The content of (B) is 55 to 75%, preferably 60 to 70%, more preferably 62 to 68%.

Al₂O₃In the present invention, it is also a network former, and it may be bonded to Al on the surface of ceramics₂O₃The glass and the ceramic material are fused together, so that the wettability of the glass to the ceramic material is increased, and the connection between the glass and the ceramic material is firmer. But Al₂O₃The linear expansion coefficient of the glass can be reduced, and when the content is too high, the linear expansion coefficient of the glass is too small, so that the risk of air leakage after packaging is increased. Therefore, Al in the present invention₂O₃The content of (b) is 2 to 15%, preferably 4 to 12%, more preferably 5 to 10%.

B₂O₃In the present invention with SiO₂And Al₂O₃Together forming a network structure of glass. B is₂O₃Has the functions of reducing the melting temperature and high-temperature viscosity and improving the glass production performance, when B is₂O₃When the content is less than 10%, the above effects cannot be sufficiently achieved, but when the content exceeds 20%, the chemical stability of the glass is lowered. Thus, B₂O₃The content of (B) is 10 to 20%, preferably 11 to 18%, more preferably 12 to 17%.

RO (RO is one or more of MgO, CaO, SrO and BaO) has an effect of increasing the mechanical strength of the glass, but when the content is too large, the linear expansion coefficient of the glass becomes large, and the devitrification resistance is deteriorated. In order to obtain glass with good chemical stability and adjust the anti-crystallization performance and the linear expansion coefficient of the glass, the content of the alkaline earth metal oxide RO is 0-10%, preferably 0-6%, more preferably 0-3%, and further preferably no RO.

The ZnO can adjust the refractive index and Abbe number of the glass and improve the water resistance of the glass, and the content of the ZnO is 0-5%, preferably 0-2%. From the viewpoint of enhancing the glass transmittance, ZnO is more preferably not contained.

ZrO₂Can increase the mechanical strength and hardness of the glass and improve the devitrification resistance of the glass, but ZrO₂The melting is difficult, and the material melting is difficult when the excessive introduction is caused. Thus, ZrO in the invention₂Is 0 to 5%, preferably 0 to 2%, more preferably contains no ZrO₂。

Li₂O、Na₂O、K₂O belongs to alkali metal oxide, is a key component for adjusting the linear expansion coefficient of the glass, and is formed by reasonably designing Li₂O、Na₂O、K₂The content of O can realize controllable adjustment of the linear expansion coefficient at a small cost. The alkali metal oxide has the other function of breaking the network structure of a glass former in the glass, reducing the high-temperature viscosity of the glass and enabling clarification and homogenization to be easier, thereby achieving the purpose of reducing the production difficulty of the glass, and simultaneously the obtained glass has lower transition temperature. In the present invention, Li₂The content of O is 0 to 12%, preferably 2 to 10%, more preferably 3 to 8%. Na (Na)₂The content of O is 0 to 10%, preferably 1 to 8%, more preferably 2 to 6%. In the invention K₂The content of O is 0 to 10%, preferably 0 to 5%, more preferably 0 to 2%, and further preferably K is not contained₂O。

Since the chemical stability and devitrification resistance of the glass are lowered after the network structure of the glass former is broken, Li is preferable in the present invention₂O、Na₂O、K₂O and total content Li₂O+Na₂O+K₂O is 5 to 20%, more preferably 6 to 18%, and still more preferably 8 to 15%.

In the present invention, Li₂O、Na₂O、K₂Although O is an alkali metal oxide, it has a different influence on the linear expansion coefficient of the glass. The inventors have intensively studied and found thatThe content of alkali metal oxide satisfies 3.5K₂O+4.5Na₂O+6Li₂When the O is between 40 and 70 percent, the obtained linear expansion coefficient of the glass can better meet the design requirement. Preferably 3.5K₂O+4.5Na₂O+6Li₂O is 45 to 68%, more preferably 3.5K₂O+4.5Na₂O+6Li₂O is 50 to 65%.

SiO₂And Al₂O₃Has the function of improving the chemical stability of glass when being made of SiO₂And Al₂O₃When the content is too high, the high-temperature viscosity of the glass is increased, and the productivity is reduced. In some embodiments of the invention, if SiO₂And Al₂O₃SiO in total content₂+Al₂O₃Above 80%, the glass bubble problem is difficult to solve, so that the glass has low bubble degree grade and the production difficulty is obviously increased; if SiO₂And Al₂O₃SiO in total content₂+Al₂O₃If the amount is too low, the chemical stability of the glass does not meet the design requirements. Thus, SiO in the present invention₂+Al₂O₃Preferably 65 to 80%, more preferably SiO₂+Al₂O₃68 to 78%, and SiO is more preferable₂+Al₂O₃70 to 76%.

The inventor researches and discovers that Al₂O₃And B₂O₃In the glass, the structure of the glass can be influenced by self-coordination change, and further, the linear expansion coefficient, the chemical stability, the transition temperature and the like of the glass are influenced. In some embodiments, when Al₂O₃And B₂O₃Ratio of (A) to (B) Al₂O₃/B₂O₃When the content of the aluminum oxide is between 0.17 and 1.2, the glass has excellent chemical stability, lower transition temperature and proper linear expansion coefficient, and is preferably Al₂O₃/B₂O₃0.25 to 0.9, more preferably Al₂O₃/B₂O₃0.3 to 0.7.

The inventors have intensively studied to find that SiO is regulated₂And B₂O₃Can effectively utilize B₂O₃The coordination change of the glass can be used for adjusting the performances of the glass, such as chemical stability, mechanical strength and the like. In some embodiments, when SiO₂And B₂O₃Ratio of (A) to (B) SiO₂/B₂O₃When the content is between 3.0 and 7.3, the glass can obtain better chemical stability and mechanical strength. SiO is preferred₂/B₂O₃3.5 to 6.5, more preferably SiO₂/B₂O₃Is 3.8 to 5.5.

Al₂O₃And B₂O₃Will result in a reduction in the linear expansion coefficient of the glass, and therefore, in some embodiments, to ensure that the linear expansion coefficient of the glass meets the design requirements, Al is preferred₂O₃And B₂O₃Total content of Al₂O₃+B₂O₃14 to 30%, more preferably Al₂O₃+B₂O₃16 to 28%, and more preferably Al₂O₃+B₂O₃Is 18 to 26%.

The viscosity of the glass is an important basis for setting the production process, and the setting of the clarifying temperature, the forming temperature and the heat treatment temperature of the glass depends on the viscosity of the glass. Therefore, the proper viscosity can effectively reduce the production difficulty of the glass. In some embodiments of the invention, when SiO₂/(Li₂O+Na₂And when the ratio of O) is within the range of 3.0-14.0, the glass has proper viscosity, and the production difficulty of the glass can be effectively reduced. SiO is preferred₂/(Li₂O+Na₂O) is 4.0 to 12.0, and SiO is more preferable₂/(Li₂O+Na₂O) is 5.0 to 9.0.

In the present invention, part or all of the above-mentioned one or more oxide components may be replaced with a fluoride, such as NaF, AlF₃、CaF₂、K₂SiF₆、KHF₂And the like. Fluorine (F) has the effect of reducing the high-temperature viscosity of the glass, improving the chemical stability of the glass, in particular, the acid resistance. Meanwhile, a small amount of fluorine can inhibit Fe impurity in the glass³⁺Coloring and improvement ofLight transmission properties of the glass. But fluorine volatilizes in the glass packaging process, so that the packaging stability and the yield are influenced. On the other hand, the volatilization of fluorine in the smelting process has great damage to the health of operators and the environment. In the present invention, part or all of the above one or more oxide components are replaced with fluoride, and the total content of F element in fluoride is controlled to 0 to 1%, and preferably F is not contained.

In some embodiments of the present invention, it is preferable that SnO is not included to achieve excellent chemical stability and devitrification resistance, and high light transmittance; and/or does not contain P₂O₅(ii) a And/or does not contain Ln₂O₃(Ln₂O₃Is La₂O₃、Gd₂O₃、Y₂O₃、Yb₂O₃One or more of the above); and/or does not contain CeO₂。

< component which should not be contained >

In the glass of the present invention, oxides of Th, Cd, Tl, Os, Be and Se tend to Be used as harmful chemical substances in recent years, and measures for protecting the environment are required not only in the glass production process but also in the processing process and disposal after commercialization. Therefore, when importance is attached to the influence on the environment, it is preferable that these components are not substantially contained except for inevitable mixing. Thereby, the glass becomes practically free from substances contaminating the environment. Therefore, the sealing glass of the present invention can be manufactured, processed, and discarded without taking special measures for environmental countermeasures. In order to achieve environmental friendliness, the encapsulating glass according to the invention preferably does not contain As₂O₃And PbO.

"0%" or "0%" is not included in the present invention, and means that the compound, molecule, element or the like is not intentionally added to the sealing glass of the present invention as a raw material; however, it is within the scope of the present invention that certain impurities or components, which are not intentionally added, may be present as raw materials and/or equipment for producing the encapsulating glass, and may be present in small or trace amounts in the final encapsulating glass.

Next, the performance of the sealing glass of the present invention will be described.

< coefficient of linear expansion >

The linear expansion coefficient (alpha) of the packaging glass is tested according to the method specified in GB/T7962.16-2010.

In some embodiments, the lower limit of the linear expansion coefficient (α) of the encapsulating glass is 60 × 10^-7A preferred lower limit of 62X 10^-7A more preferable lower limit is 63X 10^-7/K。

In some embodiments, the encapsulation glass has an upper limit of the linear expansion coefficient (α) of 73 × 10^-7Preferably, the upper limit is 70X 10^-7More preferably, the upper limit is 69X 10^-7/K。

< transition temperature >

Transition temperature (T) of the encapsulation glass_g) The test was carried out according to the method specified in GB/T7962.16-2010.

In some embodiments, the transition temperature (T) of the encapsulation glass_g) Is 520 ℃ or lower, preferably 510 ℃ or lower, and more preferably 500 ℃ or lower.

< stability against Water action >

Stability to Water action by Encapsulated glass powder method (D)_W) Measured using the GB/T17129 test standard.

In some embodiments, the encapsulated glass is stable against water action (D)_W) Is 2 or more, preferably 1.

< stability against acid Effect >

Stability to acid action by the Encapsulated glass powder method (D)_A) Measured using the GB/T17129 test standard.

In some embodiments, the encapsulation glass is stable against acid action (D)_A) Is 2 or more, preferably 1.

< transmittance >

Transmittance (tau) of the encapsulating glass_280nm) The test method comprises the following steps: the glass sample was processed to 40X 30X 1mm³And two 40X 30mm²The surface was polished and then placed in a spectrophotometer to test the transmittance at 280nm of the glass.

In some embodiments, the transmittance (τ) of the encapsulating glass_280nm) Is 0.73 or more, preferably 0.75 or more, more preferably 0.78 or more, and further preferably 0.80 or more.

[ method for producing sealing glass ]

The manufacturing method of the packaging glass comprises the following steps: the glass composition is prepared by uniformly mixing raw materials (for example, carbonate, nitrate, sulfate, hydroxide, oxide, fluoride, etc. can be used as raw materials), putting the uniformly mixed raw materials into a crucible within a predetermined content range, melting the raw materials at 1300 to 1500 ℃ for 2 to 5 hours according to the melting difficulty of the glass composition, stirring the raw materials to be homogenized, reducing the temperature to a proper temperature, casting the mixture into a mold, and slowly cooling the mold. Those skilled in the art can appropriately select the raw materials, the process method and the process parameters according to the actual needs.

[ packaging Member ]

The invention also provides a packaging element which is manufactured by the packaging glass according to a method well known by a person skilled in the field of ceramic packaging.

Examples

< encapsulation glass example >

In the following, the examples listed in the tables will describe the invention in more detail, for reference to other skilled persons. It should be noted that the glass component contents in examples 1 to 30 are expressed by weight percent, and the scope of the present invention is not limited to the examples.

In this example, glasses having the structures shown in tables 1 to 3 were obtained by the above-mentioned method for producing a sealing glass. The characteristics of each glass were measured by the test method described in the present invention, and the measurement results are shown in tables 1 to 3.

Table 1.

Table 2.

Example (wt%)	11#	12#	13#	14#	15#	16#	17#	18#	19#	20#
											SiO₂	69.14	62.51	62.54	66.87	58.54	65.47	65.14	68.24	64.24	60.42
Al₂O₃	4.21	8.52	7.54	7.32	12.21	7.75	7.45	3.35	10.25	6.54
											B₂O₃	15.25	17.58	16.54	13.36	12.29	15.86	13.25	18.24	14.25	10.25
RO	0.36	0	6.14	0.24	0	0	2.57	0	0	5.21
											ZnO	1.25	0	0	0.75	0	0	3.24	0	0	0.83
ZrO₂	0	0	0	0	3.93	2.20	0	0	0	0
											Li₂O	5.25	5.74	5.24	0	2.25	4.52	2.14	0.65	3.25	0
Na₂O	4.25	5.65	2	6.21	5.24	4.20	6.21	9.52	3.65	9.21
											K₂O	0.29	0	0	5.25	5.54	0	0	0	4.36	7.54
Total (%)	100	100	100	100	100	100	100	100	100	100
											(F)	0	0	0	0	(0.25)	0	0	(0.45)	0	0
Li₂O+Na₂O+K₂O	9.79	11.39	7.24	11.46	13.03	8.72	8.35	10.17	11.26	16.75
											3.5K₂O+4.5Na₂O+6Li₂O	51.64	59.87	40.44	46.32	56.47	46.02	40.79	46.74	51.19	67.84
SiO₂+Al₂O₃	73.35	71.03	70.08	74.19	70.75	73.22	72.59	71.59	74.49	66.96
											Al₂O₃/B₂O₃	0.28	0.48	0.46	0.55	0.99	0.49	0.56	0.18	0.72	0.64
SiO₂/B₂O₃	4.53	3.56	3.78	5.01	4.76	4.13	4.92	3.74	4.51	5.89
											Al₂O₃+B₂O₃	19.46	26.10	24.08	20.68	24.50	23.61	20.70	21.59	24.50	16.79
SiO₂/(Li₂O+Na₂O)	7.28	5.49	8.64	10.77	7.82	7.51	7.80	6.71	9.31	6.56
											α(×10^-7/K)	65	69	60	62	64	61	60	63	63	70
T_g(℃)	505	492	516	519	520	514	520	519	517	518
											D_w	Class 1	Class 1	Class 1	Class 1	Class 2	Class 1	Class 1	Class 2	Class 1	Class 1
D_A	Class 1	Class 1	Class 1	Class 1	Class 1	Class 1	Class 1	Class 1	Class 1	Class 1
											τ_280nm	0.78	0.82	0.85	0.86	0.78	0.76	0.84	0.83	0.80	0.85

Table 3.

< packaging component embodiment >

The glass obtained in examples 1 to 30 was processed into a predetermined size, and a ceramic base, a case, a lead, a frame, and the like were sealed by sealing glass into a single body at a sealing temperature according to a certain temperature profile and a predetermined firing atmosphere, thereby obtaining a sealed device.

Claims

1. The packaging glass is characterized by comprising the following components in percentage by weight: SiO 2₂：55～75%；Al₂O₃：2～15%；B₂O₃：10～20%；Li₂O：0～12%；Na₂O：0～10%；K₂O: 0 to 10% of Al₂O₃/B₂O₃Is 0.17～1.2，3.5K₂O+4.5Na₂O+6Li₂O is 40 to 61.10%.

2. The encapsulating glass according to claim 1, characterized in that it further comprises, in percentages by weight: and (3) RO: 0 to 10 percent; and/or ZnO: 0 to 5 percent; and/or ZrO₂: 0-5%, wherein the RO is one or more of MgO, CaO, SrO and BaO.

3. Packaging glass, characterized in that its composition, expressed in weight percentage, is represented by SiO₂：55～75%；Al₂O₃：2～15%；B₂O₃：10～20%；Li₂O：0～12%；Na₂O：0～10%；K₂O：0～10%；RO：0～10%；ZnO：0～5%；ZrO₂: 0 to 5% of Al₂O₃/B₂O₃0.17 to 1.2, 3.5K₂O+4.5Na₂O+6Li₂O is 40-61.10%, and the RO is one or more of MgO, CaO, SrO and BaO.

4. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: li₂O+Na₂O+K₂O is 5 to 20%.

5. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: li₂O+Na₂O+K₂O is 6 to 18 percent.

6. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: li₂O+Na₂O+K₂O is 8-15%.

7. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: 3.5K₂O+4.5Na₂O+6Li₂The content of O is 45-61.10%.

8. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: 3.5K₂O+4.5Na₂O+6Li₂O is 50 to 61.10%.

9. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂+Al₂O₃65 to 80 percent.

10. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂+Al₂O₃68-78%.

11. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂+Al₂O₃70 to 76%.

12. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: al (Al)₂O₃/B₂O₃0.25 to 0.9.

13. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: al (Al)₂O₃/B₂O₃0.3 to 0.7.

14. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂/B₂O₃Is 3.0 to 7.3.

15. The sealing glass according to any one of claims 1 to 3,the composite material is characterized by comprising the following components in percentage by weight: SiO 2₂/B₂O₃Is 3.5 to 6.5.

16. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂/B₂O₃Is 3.8 to 5.5.

17. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: al (Al)₂O₃+B₂O₃Is 14 to 30%.

18. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: al (Al)₂O₃+B₂O₃16 to 28 percent.

19. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: al (Al)₂O₃+B₂O₃Is 18 to 26%.

20. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂/(Li₂O+Na₂O) is 3.0 to 14.0.

21. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂/(Li₂O+Na₂O) is 4.0 to 12.0.

22. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂/(Li₂O+Na₂O) is 5.0 to 9.0.

23. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂: 60-70%; and/or Al₂O₃: 4-12%; and/or B₂O₃: 11-18%; and/or Li₂O: 2-10%; and/or Na₂O: 1-8%; and/or K₂O: 0 to 5 percent; and/or RO: 0-6%; and/or ZnO: 0-2%; and/or ZrO₂: 0-2%, and the RO is one or more of MgO, CaO, SrO and BaO.

24. The encapsulating glass according to any of claims 1 to 3, characterized in that its composition is expressed in weight percentage, wherein: SiO 2₂：SiO₂: 62-68%; and/or Al₂O₃: 5-10%; and/or B₂O₃: 12-17%; and/or Li₂O: 3-8%; and/or Na₂O: 2-6%; and/or K₂O: 0-2%; and/or RO: 0-3%, and the RO is one or more of MgO, CaO, SrO and BaO.

25. The encapsulating glass according to any of claims 1 to 2, characterized in that it further comprises, in weight percent: f: 0 to 1 percent.

26. The encapsulating glass according to any one of claims 1 to 3, wherein SnO is not contained in the component; and/or does not contain P₂O₅(ii) a And/or does not contain RO; and/or does not contain K₂O; and/or no ZnO; and/or does not contain ZrO₂(ii) a And/or does not contain F; and/or does not contain CeO₂(ii) a And/or does not contain Ln₂O₃RO is one or more of MgO, CaO, SrO and BaO, Ln₂O₃Is La₂O₃、Gd₂O₃、Y₂O₃、Yb₂O₃One or more of (a).

27. According to claim 1-3. the sealing glass is characterized in that the transition temperature T of the sealing glass_gBelow 520 ℃; and/or the linear expansion coefficient alpha of the packaging glass is 60 multiplied by 10^-7/K～73×10^-7K; and/or stability to water of the encapsulating glass D_WIs more than 2 types; and/or stability of the encapsulation glass against acid action D_AIs more than 2 types; and/or transmittance tau of the encapsulating glass_280nmIs 0.73 or more.

28. The sealing glass according to any one of claims 1 to 3, wherein the sealing glass has a transition temperature T_gBelow 510 ℃; and/or the linear expansion coefficient alpha of the packaging glass is 62 multiplied by 10^-7/K～70×10^-7K; and/or stability to water of the encapsulating glass D_WIs of type 1; and/or stability of the encapsulation glass against acid action D_AIs of type 1; and/or transmittance tau of the encapsulating glass_280nmIs 0.75 or more.

29. The sealing glass according to any one of claims 1 to 3, wherein the sealing glass has a transition temperature T_gBelow 500 ℃; and/or the linear expansion coefficient alpha of the packaging glass is 63 multiplied by 10^-7/K～69×10^-7K; and/or transmittance tau of the encapsulating glass_280nmIs 0.78 or more.

30. The sealing glass according to any one of claims 1 to 3, wherein the sealing glass has a transmittance τ_280nmIs 0.80 or more.

31. A package element, characterized by being made of the package glass according to any one of claims 1 to 30.