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Glass clarifier, boroaluminosilicate glass and preparation method thereof, glass substrate and display

A boroaluminosilicate and glass substrate technology, applied in the field of glass manufacturing, can solve problems such as energy consumption, increase manufacturing cost, environmental pollution, etc., and achieve the effects of improving service life, increasing manufacturing cost, and reducing cost

Active Publication Date: 2021-11-05
CSG HOLDING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there are bubbles in the melt of the glass substrate, it will have an adverse effect on the refractive index and light transmittance of the glass, thereby reducing the display effect of the liquid crystal panel
[0003] However, compared with ordinary soda-lime glass, the alkali-free substrate glass used for display panels has a higher viscosity and is difficult to discharge air bubbles. It requires higher temperature for melting and clarification, consumes more energy, and reduces thermal equipment. service life
In order to obtain non-foaming alkali-free glass, it is necessary to use the clarifier to generate gas. On the one hand, the gas generated during the reaction of the glass components is expelled. On the other hand, the diameter of the bubbles is increased during high-temperature clarification and homogenization to make them float up and escape the glass liquid. , thus discharging micro-bubbles, so that glass with no bubbles and excellent properties can be obtained. However, the current clarifiers will cause environmental pollution, and will also intensify the erosion of kiln refractory materials, reduce the service life of the kiln, and increase manufacturing costs

Method used

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  • Glass clarifier, boroaluminosilicate glass and preparation method thereof, glass substrate and display
  • Glass clarifier, boroaluminosilicate glass and preparation method thereof, glass substrate and display
  • Glass clarifier, boroaluminosilicate glass and preparation method thereof, glass substrate and display

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preparation example Construction

[0046] like figure 1 As shown, the method for preparing boroaluminosilicate glass according to one embodiment is a method for preparing boroaluminosilicate glass mentioned above. The preparation method of the boroaluminosilicate glass comprises the following steps:

[0047] Step S110: Mix raw materials containing silicon, aluminum, boron, phosphorus, magnesium, calcium, and zinc with a glass clarifying agent, and then perform melting treatment at 1590°C to 1640°C to obtain molten glass.

[0048] Among them, the glass clarifier is the above-mentioned glass clarifier.

[0049] Specifically, raw materials containing silicon, aluminum, boron, phosphorus, magnesium, calcium, and zinc include silicon sources, aluminum sources, boron sources, phosphorus sources, magnesium sources, calcium sources, and zinc sources. Among them, the silicon source is quartz sand; the aluminum source is alumina powder; the boron source is boric acid or boric anhydride; the phosphorus source is ammoniu...

Embodiment 1～ Embodiment 6

[0058] The preparation process of boroaluminosilicate glass of embodiment 1~embodiment 6 is as follows:

[0059] (1) Weigh the raw material and the glass clarifier according to the mass percentage of each component of the boroaluminosilicate glass in Table 1, and mechanically mix the raw material and the glass clarifier for 1 hour to obtain the raw material.

[0060](2) Pour the raw materials into a platinum-rhodium crucible, heat and melt at 1590° C. for 8 hours to obtain molten glass.

[0061] (3) The molten glass is poured into a stainless steel mold for molding, and then heat-preserved and annealed at 730°C for 3 hours, and then cooled to room temperature with the furnace to obtain boroaluminosilicate glass.

Embodiment 7～ Embodiment 12

[0063] The preparation process of the boroaluminosilicate glass of Embodiment 7 to Embodiment 12 is as follows:

[0064] (1) Weigh the raw material and the glass clarifier according to the mass percentage of each component of the boroaluminosilicate glass in Table 2, and mechanically mix the raw material and the glass clarifier for 1 hour to obtain the raw material.

[0065] (2) Pour the raw materials into a platinum-rhodium crucible, heat-preserve and melt at 1620° C. for 6 hours to obtain molten glass.

[0066] (3) The molten glass is poured into a stainless steel mold for molding, and then heat-preserved and annealed at 750°C for 2 hours, and then cooled to room temperature with the furnace to obtain boroaluminosilicate glass.

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Abstract

The invention relates to a glass clarifying agent, boroaluminosilicate glass, a preparation method thereof, a glass substrate and a display. The glass clarifying agent is composed of lanthanum trioxide and tin dioxide, and the mass ratio of lanthanum trioxide and tin dioxide is 0.3 to 1; or, the glass clarifying agent is composed of lanthanum trioxide, tin dioxide and cerium dioxide composition, and the ratio of the mass of dilanthanum trioxide to the sum of the masses of tin dioxide and ceria is 0.2-0.6. The above-mentioned glass clarifier can prepare glass with no air bubbles and excellent properties. The clarifier is not only environmentally friendly, but also can improve the service life of the kiln.

Description

technical field [0001] The invention relates to the field of glass manufacturing, in particular to a glass clarifying agent, boroaluminosilicate glass and a preparation method thereof, a glass substrate and a display. Background technique [0002] In the process of manufacturing LTPS (low temperature polysilicon)-TFT (thin film transistor) liquid crystal panels, semiconductor films, conductive films and insulating films are coated on the surface of glass substrates by vacuum evaporation, vacuum magnetron sputtering, physical / chemical vapor deposition and other technologies. layers, and then use photolithography to form circuits. If there are air bubbles in the melt of the glass substrate, it will adversely affect the refractive index and light transmittance of the glass, thereby reducing the display effect of the liquid crystal panel. [0003] However, compared with ordinary soda-lime glass, when used as alkali-free substrate glass for display panels, the substrate glass ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C1/00C03C3/097
CPCC03C1/004C03C3/097
Inventor 刘攀刘建党肖子凡邓臻禄戴斌何浩波李红香陈自发
Owner CSG HOLDING
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