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Aluminium borosilicate glass with high elastic modulus and uses thereof

An aluminoborosilicate, high-elasticity technology, used in glass substrates for flat panel displays to manufacture TFT-LCD glass substrates, the application of this glass plate in flat panel displays can solve errors, affect electric fields and pixels, circuits defects, etc.

Active Publication Date: 2008-02-06
HENAN ANCAI HI-TECH +1
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Problems solved by technology

The high-performance display manufacturing process includes multiple precision photolithography. If the accuracy of the two substrates of the TFT-LCD cannot be guaranteed, a local error will occur in the distance between the two substrates, which will directly affect the electric field and pixels, making the gray scale and color of the display uneven.
Substrates with low flatness can also cause defects in circuits during photolithography

Method used

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  • Aluminium borosilicate glass with high elastic modulus and uses thereof

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Embodiment Construction

[0032] The invention provides an aluminoborosilicate glass with high modulus of elasticity, the composition of the glass expressed in weight percentage is: 55-63.5 SiO 2 , 8-10.5B 2 o 3 , 15-21Al 2 o 3 , 0-3.5MgO, 4-10CaO, 0-5SrO, 1-5.5BaO, 0.001-4Y 2 o 3 , 0-2.5La 2 o 3 , 0-0.5ZnO, 0-0.3ZrO 2 , 0.001-0.08R 2 O (R = Li, Na, K),

[0033] Among them, MgO+CaO+SrO+BaO is preferably 8-18, preferably SiO 2 +Al 2 o 3 is 70-80, among which, the preferred Al 2 o 3 The content is 15-18.5, preferably Y 2 o 3 The content is 0.1-4, the preferred MgO content is 1-3, more preferably 1.5-3, the preferred CaO content is 4-8.5, the preferred SrO content is 0-3, the preferred BaO content is 1-4, and more Preferably 1-3, preferably R 2 The O content is 0.01-0.06, and the glass also contains at least one clarifier selected from the following components: 0-1.5As 2 o 3 , 0-0.85b 2 o 3 , 0-1.5SnO 2 , 0-0.5CeO 2 , 0-2Cl.

[0034] The density of said glass is less than 2.55 g / cm...

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Abstract

The invention relates to a calcium-aluminium borosilicate glass with high modulus of elasticity and is prepared and manufactured according to percentage by weight of the following raw materials: 55-63.5SiO2, 8-10.5B2O3, 15-21Al2O3, 0-3.5MgO, 4-10CaO, 0-5SrO, 1-5.5BaO, 0.001-4Y2O3, 0-2.5La2O3, 0-0.5ZnO, 0-0.3ZrO2, 0.005-0.08R2O(R=Li, Na, K). The invention has the advantages of high strain point, low coefficient of expansion, high modulus of elasticity and nonalkali basically; and is fit for a flat panel display, particularly for manufacture of TFT-LCD glass substrate.

Description

technical field [0001] The present invention relates to a kind of aluminoborosilicate glass with high strain point, low expansion coefficient, high elastic modulus, high elastic modulus substantially free of alkali, which is suitable for flat panel display, especially suitable for manufacturing TFT-LCD glass Substrate; The present invention also relates to a glass substrate for flat panel displays, which is produced according to a substantially alkali-free high elastic modulus aluminoborosilicate glass composition, and to the use of the glass plate in flat panel displays. Background technique [0002] Liquid crystal display (LCD) is one of the mainstreams of flat panel displays widely used at present. According to different control methods, it can be divided into passive matrix LCD and active matrix LCD. At present, active matrix LCD or active matrix LCD (AMLCD), also known as TFT-LCD (Thin Film Transistor- LCD), TFT liquid crystal display is a built-in transistor in each p...

Claims

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Application Information

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IPC IPC(8): C03C3/11
CPCC03C3/091C03C3/093C03C3/095C03C3/11
Inventor 曹国喜赵文明贾伟张广涛陈安国谷凡
Owner HENAN ANCAI HI-TECH
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