Arguably one of the smallest, most efficient silicon wafer cleaving tools in the world, the LatticeAx™ is sure to revolutionize your workflow. Using the LatticeAx™ and the Eagle Eye Camera, you simply SET, INDENT and CLEAVE. It's that easy.
Anyone who wishes to cleave single crystalline substrate samples and is not satisfied with the results produced by the basic methods (scribes, pins, pliers). The LatticeAx is a cost effective, accurate, high throughput, wafer cleaving solution. Laboratories with high sample volume may also need to relieve the bottleneck existing around expensive capital equipment. Additionally, it may not be practical to invest in high end cleaving equipment but easy to envision LatticeAx stations for cleaving.
The LatticeAx is easy to use and can help you to speed up and improve your sample preparation.
Here's the short list:
The LatticeAx is versatile and simple. It is used to prepare cross-sections for direct observation in the SEM and other applications needing accurately cleaved samples. LatticeGear users are using the LatticeAx for the following applications:
The LatticeAx cleaving system helps users to overcome poor quality cleaving and variability between different technicians and engineers. It does it simply and without complex machines. With better cleaving capabilities, every sample can first be cleaved and only if needed, follow on with further sample preparation steps, which expected to be minimized.
How the LatticeAx™ can help to increase sample throughput in your lab:
The LatticeAx will change the wafer cleaving workflow in your laboratory. It compliments other cleaving tools as it is more accurate than manual cleaving and less costly and higher throughput than complex automated cleaving machines.
The LatticeAx offers:
Of course! The LatticeAx will enable better cleaving accuracy and quality relative to manual methods and therefore improve cleaving throughput and sample loss. It takes little training, users will be “cleaving in minutes and experts in a day”.
The Ax can fit in the palm of your hand so it easily fits in the laboratory with optical microscopes and other semiconductor sample preparation tools.
Yes, the Ax is a STAND ALONE tool and can be mobile as needed. Setup a stable flat surface for the LatticeAx and power for the vacuum pump and computer.
Set up requirements:
Any single crystalline substrate.
Sample type: Front end, Back end, TSVs, Single die, Out of the package.
The recommended Wafer Cleaving Station offers the entire tool set to cleave a full wafer down to desired sized samples.
Minimum sample size on the LatticeAx is 7 mm in width.
Yes, for samples <7 mm wide, we have developed the Small Sample Cleaver, manual cleaving platform.
For a full “set-indent-cleave” process the minimum sample WIDTH is 7 mm. The minimum sample size of the Small Sample Cleaver is 4 mm. For a site specific cleave, ‘set-indent’ is performed on the Ax and the cleave is performed using the Small Sample Cleaver.
No need to clean the sample but it is recommended to clean the surface of the LatticeAx so it is ready for the next sample.
The “Positioning” or ‘SET’ is divided into 2 steps: coarse and fine. Accuracy and cleave quality are determined by the positioning and quality of the indent.
The coarse positioning is done by manually placing the sample on the stage, silicon facing down and layers up, while the edge (cross-section) is against the breaker bar (that’s the stopper). Now, turn the vacuum on to hold the sample in place.
Fine positioning – Fine positioning for an accurate indent is achieved by positioning the diamond indenter tip over the edge of the sample using the micrometer control until it is aligned with the target. The sample will cleave along the crystal plane defined by the linear indent visible on the sample surface. The indent process is typically viewed using the Eagle Eye Camera at 40-80x, routinely enabling cleaving accuracy of <40 microns.
There are two contact points on the sample during the cleaving process, one on each side of the indent.
The cleaving is done post indent and consists of 3 points: a pin positioned exactly under the indent location, and 2 surface contact points located on the side of the indent that push against the pin underneath. Each point is 0.22 mm diameter and 6 mm apart. You are able to control the cleaving bar Z motion towards the surface of the sample, such that you can arrive to it very slowly and push lightly to cleave. Because of the perfect initial indent and its positioning over the “top of the hill”, very little force is needed to initiate the cleave.
The LatticeAx performs best on samples with single crystalline substrate.
Unlike a scriber pen that is used to scribe a long, relatively thick line which determines the cleave line, this patented pending, smart device utilizes a custom diamond tip to scribe a “dent” (500 microns long) next to the ‘target line’ which will start the cleave but it will continue through the natural path of the substrate (for example, silicon crystalline). This assures high accuracy and high quality without any damage created otherwise by the scribe line.
The LatticeAx performs best on material that has single crystalline structure, glass and glass types do not have such, which requires one to use a scriber pen and scribe a full line by which the cleave will occur.
We would be happy to try cleaving your samples and advise.
The LatticeAx can fit in the palm of your hand so it can easily be placed in a glovebox. Once in the glovebox, you can cleave the sample (with or without OM) and not expose the sample x-section to air.
It depends on the usage type, longer life for less accurate applications and higher frequency replacement for sub-50 micron accuracy applications. The lifetime is not determined by time but by the number of indents.
Through usage, its sharp tip slowly becomes more rounded, which means, the indent it produces will be wider (all relative, it is still in microns). The finer the indent is, the higher the cleaving precision. As wider the indent becomes, the less accurate the cleave will be. If you use it for large target or as a pre-prep device, it can last hundreds (maybe a thousand) of scribes, however if you wish to use it for higher accuracy (<50-microns), you should expect to replace it after 200-400 indents or as you see the accuracy degrading.