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Quadruple Top Pattern


In addition, each must still meet specified width targets. Where spacers are involved, the width of the spacer is dependent on the initial deposition as well as the subsequent etching duration. Where more than one spacer is involved, each spacer may introduce its own width variation. Cut location overlay error can also distort line ends or infringe on an adjacent line.


  • As we all know, no support or resistance line will be capable of halting the price action indefinitely, and no range pattern can remain valid forever.
  • This article will look at the five key breakout patterns in detail and show measuring techniques for Price Objectives.
  • This material does not consider your investment objectives, financial situation or needs and is not intended as recommendations appropriate for you.
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  • However, you can tweak this threshold, as we will discuss in the first example below.
  • For traders who want to wait for confirmation of a reversal, this down gap offered a second chance.

Some aspects of other considered multi-patterning techniques are discussed below. Alternatively, the cut pattern itself may be generated as a DSA step. Samsung recently demonstrated DRAM patterning using a honeycomb structure suitable for 20 nm and beyond. Each iteration of spacer patterning triples the density, effectively reducing 2D pitch by a factor of sqrt. This is particularly useful for DRAM since the capacitor layer can be fit to a honeycomb structure, making its patterning simpler. When SADP is repeated, an additional halving of the pitch is achieved.

Fibonacci levels

Support and resistance lines are ubiquitous on the charts, but many of them are caused by the random fluctuations of the price, rather than a truly significant cluster of orders in either direction. In order to gauge the importance of a support or resistance level, the technical trader will count the number of times it resisted attempts of breakout, and classifies the levels in accordance. A downward v- reversal pattern occurs in an uptrend, and represents a bubble, and its collapse. In this case, the buyers are so confident in their ability to sustain the trend that they throw all caution to the wind, and keep buying the pair as it registers new highs one after the other.


There were multiple whipsaws around the channel line, and the bullish bias was in doubt. This example shows the value of trend channels in helping us to arrive at a suitable trading approach. As the market tested the low of the parent bar, a Double Inside Bar pattern formed. But the overlapping lower shadows implied bullish pressure, hinting that the bears were not forthcoming too.

Risk capital is money that can be lost without jeopardizing ones financial security or life style. Only risk capital should be used for trading and only those with sufficient risk capital should consider trading. Past performance is not necessarily indicative of future results. Our confidence in a bullish trend resumption at this point was low. Although a bull channel was present, the market tangled with the channel line.

EUV Multipatterning tops are the same as double bottoms, but are regarded as bearish reversal patterns instead of bullish. Sometimes good or bad news will come out when the stock market is closed, creating a severe imbalance of buyers or sellers. The result is that when the stock finally opens for trading, it will jump up or down, leaving a hole in the chart. In many cases, we must use our own judgement, and make some arbitrary choices before the reliability of the pattern is established.

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The trend line was hit four times, and following the third, a short term parabolic movement created a brief bubble which also signaled the end of the brief daily trend. The reaction of the buyers was swift and strong, and after a few swings, the price broke out of the downtrend line and rallied. The symmetrical triangle, which can also be referred to as a coil, usually forms during a trend as a continuation pattern. The pattern contains at least two lower highs and two higher lows. When these points are connected, the lines converge as they are extended and the symmetrical triangle takes shape.

Double Top and Bottom Trading With Bollinger Bands

A little congestion, a clear resistance level, and a definitive breakout point make these patterns relatively easy to spot. Like NAND Flash, DRAM has also made regular use of multiple patterning. Even though the active areas form a two-dimensional array, one cut mask is sufficient for 20 nm. Furthermore, the cut mask may be simultaneously used for patterning the periphery, and thus would not count as an extra mask. When the active area long pitch is ~3.5 x the short pitch, the breaks in the active area form a hexagonal array, which is amenable to the triangular lattice spacer patterning mentioned above. As of 2016, Intel was using SADP for its 10 nm node; however, as of 2017, the 36 nm minimum metal pitch is now being achieved by SAQP.

If you draw a trendline between the two retracement lows on a triple top pattern, when the price drops below that trendline it can also be used as an entry point. This is only useful if the second retracement is a bit higher than the first. If the second retracement low is way above the low of the first, or below the first, the trendline will be awkwardly angled and thus not useful. Double and triple tops are bearish patterns, so they work best for exiting long positions or entering short positions. When the Triple Top pattern looks obvious, it’s too late to short the markets as the price is near the lows of the consolidation , and it could reverse higher. Yes, the Triple Top chart pattern signals the sellers are in control, but it doesn’t mean you want to sell immediately.

The prior, the bar before the inside bar, is often referred to as the “mother bar”. You will sometimes see an inside bar referred to as an “ib” and its mother bar referred to as an “mb”. Finally, if you’re familiar with divergence strategies, you might’ve noticed some similarities. Here, in essence, we are looking for a divergence between price action and its interaction with the Bollinger Band.

Intel is using triple patterning for some critical layers at its 14 nm node, which is the LELELE approach. Triple patterning is already demonstrated in 10 nm tapeout, and is already an integral part of Samsung’s 10 nm process. TSMC is deploying 7 nm in 2017 with multiple patterning; specifically, pitch-splitting, down to 40 nm pitch. Beyond the 5 nm node, multiple patterning, even with EUV assistance, would be economically challenging, since the departure from EUV single exposure would drive up the cost even higher. However, at least down to 12 nm half-pitch, LELE followed by SADP appears to be a promising approach, using only two masks, and also using the most mature double patterning techniques, LELE and SADP.

The first one is suspect because of the distance between the first two X-Columns and the breakout X-Column. The second Spread Triple Top Breakout is a continuation pattern because it formed after a long X-column. The pattern is seven columns wide, which makes it the ideal length for a Spread Triple Top Breakout. The chart above shows Computer Sciences with a reversal Triple Top Breakout at the end of 2008 and then two continuation Triple Top Breakouts.

The earliest form of multiple patterning involved simply dividing a pattern into two or three parts, each of which may be processed conventionally, with the entire pattern combined at the end in the final layer. This is sometimes called pitch splitting, since two features separated by one pitch cannot be imaged, so only skipped features can be imaged at once. It is also named more directly as “LELE” (Litho-Etch-Litho-Etch). The additional cost of extra exposures was tolerated since only a few critical layers would need them.

Advanced Patterns

The v-reversal pattern has two phases, the first is in line with the main uptrend, and is usually sharp, and swift. The second phase is a counter trend, and leads to a breakdown of the technical picture. While discussing the downward v-reversal, we had noted that the first leg of the V was a short or long term bubble. In the case of the upward v-reversal pattern, the first leg represents a panic phase.

The next warning sign comes when volume increases on the decline from the peak of the head. Final confirmation comes when volume further increases during the decline of the right shoulder. The head and shoulders pattern looks like a head with two shoulders. It is formed by a peak , followed by a higher peak , and then another lower peak . A “neckline” is drawn by connecting the lowest points of the two troughs.


As with all continuation patterns, the descending triangle will cause volatility to decrease, as the indicators settle to relatively subdued levels, and money flows through. Nonetheless, when one of the two sides of the triangle is sloping with an angle that is a lot greater than 45 degrees, it is possible that volatility be sustained during the development of the triangle, or even increase. A developing triangle with high volatility may make false breakouts likelier, which the trader must recall while evaluating his trading options.

Above we sellers maintaining steady resistance at the flat top of the triangle, yet buyers were becoming more and more aggressive, creating an upward bottom for the triangle. Buying pressure finally broke through the sellers’ resistance at the top of the triangle. We would place our stop-loss order at the nearest Fibonacci extension of the price movement between 23rd January, and 27th January. Our take profit movement would be at 61.8 retracement of the same movement. Finally, let us take a look at a double bottom formation which resulted in a trend reversal.

The reverse head and shoulders pattern signals that an ongoing downtrend is in danger of reversal. As usual, the head and shoulders pattern may ultimately be proven to be nothing but a temporary period of consolidation, and the prices may continue on the previous direction with hardly a pause. Tops and bottoms are patterns that are found when the trend is in danger of reversing. In other words, the main trend that is being tested at the support or resistance line is in danger of exhausting itself, but is still intact as long as the pattern is developing. As with the triangle pattern, this pattern keeps zigzagging and repeating itself until news or new money forces a breach of the support or resistance level.