The TV panel showed a slight oversupply in the first quarter;
Sigmaintell said that driven by the continued improvement of the global economy and the decline in costs, the TV market demand is expected to gradually recover, thereby driving supply and demand to balance.
Since the first quarter was a low season for stocking, coupled with panel manufacturers' rapid adjustment of production capacity allocation strategy, the global TV panel supply and demand ratio in the first quarter of this year was 6.2%, showing a slight oversupply.
Qunzhi Consulting said that in the first quarter of 2018, the actual production area of ​​global LCD TV panels decreased by 2% compared with the previous quarter, and the supply quantity was about 66.27 million pieces, a decrease of 7.7% from the previous quarter.
Among them, the 32 and 65-inch price drops have slightly expanded in terms of size, so the supply and demand of 55-inch is balanced in the first quarter, and the supply and demand of other sizes are surplus, especially the potential risks of 32 and 65 inches increase, and the price drop is expected to expand slightly.
The 32-inch demand remained strong until the fourth quarter of 2017 due to the impact of Chinese brands to achieve sales targets and export demand delays, but the 32-inch demand in the first quarter fell significantly from the previous quarter, and the supply side was relatively profitable. Plus the 32-inch production capacity has not been significantly reduced.
Therefore, Qunzhi predicts that the supply and demand ratio of 32-inch in the first quarter is 6.7%, and the supply and demand are surplus. Previously, because the price of the 32-inch panel was relatively stable, the price gap with the 40-inch size segment was narrowed, which led to further expansion of potential risks. It is expected that the second quarter will be late. The price decline has increased.
As for the 40 ~ 43 size segment, the weakening of the export demand for stocks and the adjustment of the size structure of the demand side, the weakening of the demand for stocks in the first quarter, plus the active adjustment of the production capacity at the panel side, controlling the 43-inch supply, the overall supply-demand ratio is 6%, and the supply-demand balance is biased Loose, prices showed a slight downward trend.
In the 48 ~ 50 size segment, the long-term upside-down prices of 49 and 50 inches stimulated the demand to shift to 50 inches. 49 inches will face greater pressure in the first quarter, and the current inventory of 50 inches is still high, but panel makers are actively stimulating prices. As well as capacity adjustments, inventories have shown a sharp decline, and pressure has gradually eased.
The supply and demand of this size segment remained excessive in the first quarter, and prices continued to fall, but the price difference between 49 and 50 inches will gradually narrow.
In the 55-inch area, the demand for 55-inch stocks remained strong. In the first quarter, supply and demand were balanced and prices were stable.
In the large-size part, although TV manufacturers have high hopes for 65 inches, the terminal market sales are still not as expected. The demand for stocks is slowly increasing. Panel manufacturers continue to actively increase the proportion of 65-inch production capacity. At the same time, BOE's 10.5 generation line is about to be mass produced To provide more room for growth in the supply of 65-inch panels.
Qunzhi Consulting predicts that the supply and demand ratio of 65-inch panels in the first quarter will be 6.8%, and there will be excess supply and demand, and panel prices will continue to drop significantly.
. American scholars use white graphene interlayer to greatly improve the ductility and strength of ceramic materials
As an applied material, the main disadvantage of ceramics is that they are easily broken under high pressure or high strain. However, a study by Rice University has overcome this limitation and improved the ductility and toughness. Strength performance.
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Phys.org reports that this research has been published in the journal "ACS Applied Materials and Interfaces" published by the American Chemical Society.
Research author and assistant professor of civil and environmental engineering at Rice University Rouzbeh Shahsavari pointed out that adding ultra-thin hexagonal boron nitride (hBN) between two layers of calcium silicate will form an interesting double-layer crystal, with The special properties of the multi-function can make a durable ceramic material with heat resistance and radiation resistance.
According to Shahsavari's calculations, calcium silicate inserted into the two-dimensional hBN layer will be very strong and can even be used as a shield for nuclear applications such as power plants. In addition to the nuclear industry, this material can also be used in construction, crude oil, natural gas, Aerospace and other fields that require refractory materials or high-performance composite materials.
Because the appearance of the two-dimensional hBN is hexagonal interconnected to form an ultra-thin plane, it looks very similar to graphene, so it is also called "white graphene"; but unlike graphene, the main composition of hBN is not carbon Instead of atoms, it consists of boron and nitrogen alternately.
The fillers traditionally used for reinforcement are often loosely connected to the main material, but the hBN placed between the double-layer calcium silicate becomes part of the overall system. Shahsavari believes that this study shows the minimum Under the adjustment of the possibility of ceramic material reinforcement.
The ceramic form used by the team for research is mainly "tobermorite". In order to understand the difference from the original material, the team also tested the horizontally stacked tobermorite and the model inserted into hBN in the study. The results show that the composite material has three times the strength and 25% higher hardness than the original tobermorite.
When the material is compressed, the generally horizontal tobermorite exhibits yield strength of about 10 GPa, yield strain is 7%, and the composite material shows a yield strength of 25 GPa and 20% Yield stress.
Shahsavari said that compared to common one-dimensional fillers such as fibers and nanotubes (CNT), two-dimensional materials such as hBN are double-sided, so the surface area per unit mass is also twice. The reinforcement effect is perfect. "
Shahsavari believes that for those bottom-up designs of high-performance ceramics and other multifunctional composite materials, other two-dimensional materials such as molybdenum disulfide, niobium diselenide, and layered double hydroxides ( LDH) may also be applicable. technews
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