Substrate glass for OLED display
A display and substrate technology, applied in glass forming, glass manufacturing equipment, manufacturing tools, etc., can solve problems such as large fluctuation of elastic modulus at strain points, unsatisfactory elastic modulus, and unsatisfactory strain points. To achieve the effect of good homogeneity, close coordination relationship and low crystallization temperature
Pending Publication Date: 2022-05-13
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that the patent publication number is CN111606560A and the fluctuation of the strain point and the modulus of elasticity is relatively large (when the strain point is high, the modulus of elasticity cannot meet the requirements; when the modulus of elasticity is high, the strain Points can not meet the requirements), can not meet the use requirements of OLED substrate glass at the same time; provide a substrate glass for OLED display
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[0021] A substrate glass for OLED display, the specific implementation steps are as follows:
[0022] (1) Mix the components according to Table 1;
[0023] (2) First, raise the temperature from room temperature to 1560°C at a rate of 2°C / min, and keep it warm for 1 hour; then raise it from 1560°C to 1660°C at a speed of 2°C / min, and keep it warm for 4 hours;
[0024] (3) Pour the completely melted molten glass onto a copper plate for molding and annealing to obtain the substrate glass for OLED display.
[0025] According to the present invention, the specific operating conditions of the annealing are well known to those skilled in the art, for example, may include: the temperature is 700-900°C, and the time is 4-8h; those skilled in the art can determine the specific annealing temperature according to the actual situation And annealing time, can also test the physical properties of the annealed glass substrate, such as density, thermal expansion coefficient, strain point, etc...
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The invention relates to substrate glass for OLED (Organic Light Emitting Diode) display. The substrate glass is characterized by being prepared from the following raw materials in molar percentage: 67 to 69 percent of SiO2, 13.5 to 14.5 percent of Al2O3, 1.41 to 1.92 percent of B2O3, 6 to 7 percent of MgO, 5 to 5.5 percent of CaO, 4 to 5 percent of SrO and 0.08 to 0.09 percent of SnO2. Wherein the total mole percent of SiO2 and Al2O3 is 81.5 to 82.5 percent, and the mole ratio of SiO2 to Al2O3 is 4.62 to 5.11; the total molar percentage of MgO, CaO and SrO is 16.0-16.5%, and the molar ratio of CaO to MgO is 0.71-0.92; the molar ratio of the SrO to the MgO is 0.57 to 0.83. The glass has the advantages that ZrO2 and P2O5 are not contained in the glass, the contents of Al2O3 and SiO2 are high, and the matching relationship among MgO, CaO and SrO is tight, so that the strain point and the elastic modulus of the glass have relatively high numerical values at the same time; and the glass is good in homogeneity and low in crystallization temperature.
Description
technical field [0001] The invention belongs to the technical field of glass production and relates to a substrate glass for OLED display. Background technique [0002] OLED (Organic Light Emitting Display) is an organic light-emitting display, which is a new type of display device and is known as a "dream display". The basic structure of OLED is a thin and transparent indium tin oxide (ITO) with semiconductor properties, which is connected to the positive electrode of electricity, plus another metal cathode, wrapped into a sandwich structure. The whole structural layer includes: hole transport layer (HTL), light emitting layer (EL) and electron transport layer (ETL). When the power is supplied to an appropriate voltage, the positive holes and the negative charges will combine in the light-emitting layer to produce light, and the three primary colors of red, green and blue RGB will be produced according to their formulas to form the basic colors. Unlike TFT LCD, OLED does ...
Claims
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Login to View More IPC IPC(8): C03C3/091C03B19/02
CPCC03C3/091C03B19/02
Inventor 彭寿张冲崔介东赵凤阳王萍萍高强王巍巍韩娜柯震坤石丽芬杨勇李常青周刚曹欣倪嘉单传丽李金威胡文涛仲召进
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD