Hunan Xinghuai New Materials Technology Co., Ltd.
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Ultra Clear Glass Panel for Glass Substrates as Mini LED Backplanes
Compared with the PCB substrate, the glass substrate has many advantages:
The thermal conductivity of the PCB material is not as good as that of the glass, and when the number of LED chips increases, the service life of the LED will be reduced; the glass substrate has the characteristics of good flatness and low expansion and contraction coefficient, which can better support COB packaging of Mini LED chips, and when the thickness of the PCB board is less than 0.4mm, when the LED chip is packaged on the PCB substrate, due to the different thermal expansion coefficients of the packaging glue and the PCB material, there may be a problem of glue cracking;
When used, the glass base can achieve a narrow frame and low OD value (the distance between the lower surface of the diffuser and the upper surface of the circuit board), so that the TV can be made thinner and more fashionable;
The glass base can make the area of the backplane smaller as needed Large, infinite splicing can be achieved, while the PCB version is difficult to achieve;
In addition, the cost of the glass substrate is relatively lower compared to the PCB substrate.
Ultra Clear Medium Alumino-Silicate Glass(CHIYAN-M2) is an eco-friendly ultra-thin alumino-silicate glass with certain strength.
Features:
High Impact Resistance
High Scratch Resistance
High Flexibility
High Bending Strength Resistance
Application:Widely used in vehicle, consumer electronics cover plate, photovoltaic, industrial touch, smart home field;
Regular Thickness:
2.0mm 1.80mm 1.50mm 1.30mm
1.10mm 0.70mm 0.55mm
0.40mm 0.33mm 0.25mm
CHIYAN-M2’s 0.25~2.0mm thickness medium alumino-silicate glass has already been used in the market to meet a wide range of customers needs.
Standard Size:1300*1100mm (5th Generation)
Note: The size can be customized according to customer's needs.
Product Composition
Ultra Clear Medium Alumino-Silicate Glass achieves better stress and strain depth than ordinary soda-lime glass by increasing the Al₂O₃ content in the glass and increasing the ion exchange capacity.
Composition items | SiO₂ | Al₂O₃ | Fe₂O₃ | CaO | MgO | K₂O | Na₂O |
Range of set value | 69.0-72.0 | 4.5-8.0 | ＜0.01 | 6.0-8.0 | 3.5-5.0 | 0.1-1.0 | 13.0-14.5 |
Physical Property Parameter
S/N | Items | Unit | Test Standard | CY-M2 |
1 | Density | g/cm3 | GB/T5432-2008 | 2.48±0.01 |
2 | Refractive Index | / | GB/T 2680-2021 | 1.51±0.01 |
3 | Young's Modulus | Gpa | GB/T 37780-2019 | 73.0±0.5 |
4 | Transmittance | % | GB/T 2680-2021 | ≥91.5 |
5 | Volume Resistivity | lg(Ω .cm) | GB/T 31838.2-2019 | ≥10.0 |
6 | Dielectric Constant | / | SJ/T 11043-1996 | ≥7.0 |
7 | Softening Point | ℃ | GB/T 28195-2011 | 750±10 |
8 | Strain Point | ℃ | GB/T 28196-2011 | 516±5 |
9 | Annealing Point | ℃ | GB/T 28196-2011 | 562±5 |
10 | Thermal Conductivity | W/( m.K) | JC/T 675-1997 | 0.682±0.10 |
11 | Thermal Expansivity | * 10-7/℃ | SJ/T 11036-1996 | 85±5 |
12 | Photoelastic Coefficient | nm/cm/MPa | BS 7604-1-1992 | 27.0±0.2 |
13 | Poisson's Coefficient | / | GB/T 28195-2011 | 0.23±0.02 |
14 | Vickers-hardness | HV | GB/T 16534-2009 | 610±10 |
Chemical Tempering Process Parameter Setting Reference
Technological Parameter | 400°C | 410°C | 420°C | 430°C | ||||
CS(MPa) | DOL(um) | CS(MPa) | DOL(um) | CS(MPa) | DOL(um) | CS(MPa) | DOL(um) | |
3H | ≥650 | ≥7.0 | ≥650 | ≥8.0 | ≥650 | ≥9.0 | ≥650 | ≥10.5 |
4H | ≥600 | ≥8.0 | ≥600 | ≥9.0 | ≥600 | ≥11.0 | ≥600 | ≥12.5 |
5H | ≥600 | ≥9.0 | ≥600 | ≥10.0 | ≥600 | ≥11.5 | ≥600 | ≥13.0 |
Note: Tempering solution Na+<0.5%. The above test results are affected by processing conditions, the data is for reference only, not as a basis for production.
Dimensions
NO. | Item | Specification | Detection Method |
1 | Dimensional Tolerance | 1300*1100*(±2mm) | Tape Measure |
2 | Thickness | 0.50~1.1 ±0.05m 1.3~2.0 ±0.05m | Micrometer |
3 | Thickness Difference | ≤0.04mm | Micrometer |
4 | The Diagonal Difference | ≤0.3% | Tape Measure
|
5 | Stripe | ≤Level2 | Point Sources of Light |
6 | Flatness (Before Tempering) | 0.50~0.55 ≤0.15%(=h/L) 0.70~2.0 ≤0.10%(=h/L) |
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Appearance Specifications
NO. | Item | Specification | Detection Method | |
1 | Effective Mass Area | All areas outside 10mm of the edge are effective mass areas. |
| |
2 | Appearance Defects | Scratches | w≤0.03mm, Allowed 0.03mm＜w≤0.05mm,L≤25mm (Controlled by point defects) w＞0.05mm, Not allowed |
Fluorescent Lamp 2000-2500Lux
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Bubbles | d≤0.05mm, Not counted 0.05mm＜d≤0.2mm, Numbers≤5 /m² d＞0.2mm,Not allowed | |||
Inclusions such as stones and sticky tin | d≤0.05mm, Not counted 0.05mm＜d≤0.2mm, Numbers≤5 /m² d＞0.2mm,Not allowed | |||
3 | Edge Defects | Chipping | Single chipping L≤2.0mm,W≤1.0mm,D≤1/2 of the thickness (as the right picture showed). The cumulative length of chipping is less than 10% of the edge length of the glass plate. |
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4 | Cracks and missing corners | Not allowed | ||
5 | Surface stains (glass shavings, attachments, point contamination) | No stains that cannot be removed by ordinary detergents are allowed. | ||
d≤0.05mm, Not counted 0.05mm＜d≤0.3mm, Numbers≤5 /m² d＞0.3mm,Not allowed | The same method as appearance detection. | |||
Packing Quantity
S/N | L*W*T(mm) | Packing Quantity (Pieces/Box) |
1 | 1300x1100x0.25 | 900 |
2 | 1300x1100x0.33 | 1020 |
3 | 1300x1100x0.40 | 900 |
4 | 1300x1100x0.50 | 750 |
5 | 1300x1100x0.55 | 680 |
6 | 1300x1100x0.70 | 550 |
7 | 1300x1100x0.82 | 490 |
8 | 1300x1100x0.95 | 420 |
9 | 1300x1100x1.0 | 410 |
10 | 1300x1100x1.1 | 370 |
11 | 1300x1100x1.3 | 310 |
12 | 1300x1100x1.5 | 280 |
13 | 1300x1100x1.6 | 250 |
14 | 1300x1100x1.8 | 230 |
15 | 1300x1100x2.0 | 200 |
Packaging Diagram
Storage
Storage conditions: Temperature ≤30℃, humidity ≤65% (no condensation), shelf life is 6 months from the date of delivery.