Thursday, August 6, 2015

Lintec Rad-2500 F8 SPL Wafer Mounter

Lintec Rad-2500 F8 SPL Wafer Mounter Chuck Table

8" inch ceramic chuck table
12" inch ceramic chuck table

Monday, July 6, 2015

ACCRETECH/ TSK DICING MACHINE CHUCK TABLE

REPAIR OR REBUILD
ACCRETECH/TSK DICING MACHINE CHUCK TABLE

MACHINE MODLE

ACCRETECH / TSK 2500

ACCRETECH / TSK 88 A

ACCRETECH / TSK APM-5000

ACCRETECH / TSK APM-6000A

ACCRETECH / TSK APM-60B

ACCRETECH / TSK APM-90AL

ACCRETECH / TSK AWD-100A

ACCRETECH / TSK AWD-100A(M)

ACCRETECH / TSK AWD-10A

ACCRETECH / TSK AWD-110M

ACCRETECH / TSK AWD-200T

ACCRETECH / TSK AWD-208T

ACCRETECH / TSK AWD-300T

ACCRETECH / TSK AWD-4000A

ACCRETECH / TSK AWD-4000B

ACCRETECH / TSK AWD-5000

ACCRETECH / TSK AWD-5000A

ACCRETECH / TSK G-SL-534A-CX

ACCRETECH / TSK MSP 90A

ACCRETECH / TSK PSM-2000A

ACCRETECH / TSK UF 170

ACCRETECH / TSK UF 200 / 200A

ACCRETECH / TSK UF 200FL

ACCRETECH / TSK UF 200SFL

ACCRETECH / TSK UF 300/300A

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Monday, June 22, 2015

Hitachi I-900SRT 200mm Ceramic Wafer Chuck

Wednesday, June 17, 2015

End Effector---ceramic wafer arm

End effector (ceramic robot hand) constitute the end of the robot arm which handles and moves the semiconductor wafer between positions. It’s basically the robot’s hand so it is important that it be thermally and dimensionally stable and not contaminate the chamber with particles or chemical contaminants.

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Friday, June 12, 2015

SemiXicon

前工序工艺设备:
光刻机: 佳能PLA-501F, 600. PE-340,500,600系列分步重复光刻机STEPPER ASML-Stepper 分步光刻机 Ultratech Stepper Model 1700 涂胶显影导轨: SVG 8600,8800 刻蚀机: Tegal 900/901/903. 去胶机Branson 3000,3100 各种扩散炉化学气相沉积APCVD(WJ-999),PECVD, LPCVD 溅射台3180, 3190, 3290 蒸发台MARK-50. 离子注入机 NV10160,GDS-80 硅片探针: EG1034,EG2001,3001 硅片腐蚀清洗设备: FSI-Titan 兆声波清洗Verteq Meg-sonic, 湿洗台Wetbench, Wet Etch 清洗甩干机工艺参数测量设备: 4点探针 FPP-5000, C-V 图示仪(电容/电压曲线测量仪) 少数载流子寿命测试仪尘埃颗粒测量仪KLA Tencor5500,6200,SP1 膜厚测试仪 Nanospec 180/181/210 台阶仪:Tencor AlphaStep 200/300/500 集成电路测试系统 MTI-1030 用于测试运放/比较器,电源管理器件,脉宽调制器件,稳压电源器件,音频器件,各类数字模拟混合电路分离器件测试系统ST5000E,ST5300HS 1000-2000V,50A-1200A,用于测试大功率MOSFET, IGBT,二极管,三极管,整流桥各种备品备件
后工序设备
划片机,粘片机,压焊台,塑封机,机械手可靠性实验设备,漏气检验,离心实验机等


硅片生产设备:
切片机, 磨片机抛光机 Siltek 3800/3806, Speedfam 16/18/50 硅片厚度平整度测试分选设备 ADE 8100, 7200, 9300, 9500, 9520, 9530, 9600 硅片减薄机: 迪斯科 DISCO 斯特拉斯Strasbaugh 7AA, GMN 2R400 激光打标机, 激光识别机硅片腐蚀清洗机, 倒角机硅片表面检查魔镜

Friday, June 5, 2015

OKAMOTO VG502 CERAMIC CHUCK

OKAMOTO VG502 GRINDING SYSTEM CERAMIC CHUCK

BACK GRINDER

5",6",8" WAFER

www.chuck-table.com

DFG840/841 BACKGRINDING POROUS CERAMIC CHUCK TABLE

DFG840/841 BACKGRINDING POROUS CERAMIC CHUCK TABLE

4"--8"

www.chuck-table.com

Wednesday, June 3, 2015

Taichi Chuck 太極--禅

太极--禅

太極--禅

(Tai Chi Chuck)

Tai chi --Zen

www.chuck-table.com

Monday, June 1, 2015

Chuck Table

www.chuck-table.com

Friday, May 29, 2015

DISCO DFG8540/8560 GRINDING CHUCK

CHUCK TABLE FOR DFG8540/8560 GRINDER

Great savings,prompt delivery world wide
www.chuck-table.com

Monday, May 25, 2015

Square Porous Ceramic Chuck Table (164*164mm)

Square Porous Ceramic Chuck Table (164*164mm) Drawing

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Tuesday, May 19, 2015

ZERODUR

ZERODUR

ZERODUR® is a glass ceramic characterized by a phase of evenly distributed nano-crystals within a residual glass phase. It contains around 75 weight percent crystalline phase with a high quartz structure. The crystal structure has a negative linear thermal expansion, while the other glass phase has a positive linear thermal expansion. The material is adjusted in a way that the positive thermal expansion of the glass phase and the negative thermal expansion of crystal structure effectively neutralize each other. The crystals are typically only 50 nm in diameter, and ZERODUR appears reasonably transparent because the refractive indices of the two phases are almost identical. The most important properties of zerodur are:

Nearly zero thermal expansion
Excellent homogeneity
High internal quality
Outstanding chemical stability
Polishable to a high accuracy
Good processing behavior
Low helium permeability

Figure 1&2 and table 1 give an overview of ZERODUR’s properties.


Figure 1: External transmittance curve of ZERODUR at sample thickness of 5 mm and 25 mm.


Figure 2: Thermal expansion coefficient curve of ZERODUR as a function of temperature.

Optical Properties
Wavelength(um)	656.27	643.85	587.56	546.07	486.13	479.99	435.83
Designated Letter	C	C'	d	e	F	F'	g
Refractive Index	1.5394	1.5399	1.5424	1.5447	1.5491	1.5497	1.5544
AbbeNumber			56.1	55.9
Mechanical Properties and Chemical Properties
Density(g/cm3)	Poisson's Ratio	KnoopHardness	Young's Moduluds (GPa)	AcidResistance Class	AlkaliResistance Class	ClimaticResistance Class	StainResistance Class
2.53	0.24	620	90.3	1	1	1	0
Table 1:ZERODUR Properties

Low Expansion Materials :

ZERODUR® is a registered trademark of Schott Glass Technologies.

Friday, May 15, 2015

DAD321 Porous Ceramic Chuck Table

Chuck Table for DAD321 Dicing Saw

www.chuck-table.com

All rights reserved by Werlchem LLC, California

DAD641 Porous Ceramic Chuck Table

Chuck Table for DAD641 machine 6"

www.chuck-table.com

All rights reserved by Werlchem LLC

Wednesday, May 13, 2015

Wafer lapping ,polishing ,thinning ceramic plate

Key Features

· Material

99.8% Alumina,high density,high hardness and good thermal conductitivity

· Tolerance

High flatness,parallelism ,roughness and micro constructure

· Efficiency

Contract manufacturing on associated variety of shapes,sizes and retain regular sizes in stock

· Cost

Total cost ownership commitment with swift responding,consistent cost reduction and overal design and development

www.chuck-table.com

Friday, May 8, 2015

Thin Film or Wafer Carriers

Sapphire material is now widely used in optical and semiconductor industry, with hardness second only to diamond and chemical and scratch resistance and thermal stability ,it is superior to other materials such as quartz.

Sapphire carrier are used to hold and transport thin film processing of silicon,GaAs other semiconductor wafers and flexible substrates.

All thin substrate carriers are ultra flat and can be supplied with or without custom perforated holes,other option of porous ceramic is also our expertise.

Current sizes are available typically from 2" to 12" dia with flatness and parallelism of 0.002-0.005mm, large size till 20 inches is also successfully prototyped.

www.chuck-table.com

Thursday, May 7, 2015

WAFER-PIN-CHUCK

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Tuesday, April 28, 2015

静电吸盘的基本构造和原理

射频专家发表于: 2007-4-04 04:31 来源: 半导体技术天地

静电吸盘的构造和原理对很多人来说都还是很陌生的。不妨在这儿开个头，慢慢再以对答方式把它解释透。

1。种类：基本分为两类。即库仑类和迥斯热背（JR或Johnsen-Rahbek）类。
2。两类吸盘都靠静电荷的同性相吸来固定硅片。
3。吸盘与晶片接触的表面有一层电介质。以前的吸盘用的电介质多为有机材料或阳极氧化层，现在已普遍采用陶瓷。纯电介质做成的吸盘为库仑类，参杂电介质做成的吸盘为迥斯热背类。
4。在吸盘的电介质层中镶嵌着一个直流电极（大小与硅片相当，稍小），用以接通到高压（低流）直流电源。
5。在没有等离子体的情况下，当直流电极被接通到高压（低流）直流电源后，电介质的表面会产生极化电荷（对库仑吸盘而言）。如果是迥斯热背类吸盘，电介质表面不仅有极化电荷，还有很大部分自由电荷，这是因为JR吸盘的电介质有一定导电性。电介质的表面电荷会产生电场，这一电场会进一步在置于吸盘之上的晶片表面产生极化电荷（也可能包括部分自由电荷，取决于什么样的晶片及晶片表面是什么膜，有导电性或绝缘），分布在晶片背面的电荷与分布在吸盘上面的电荷极性相反，这样晶片解就吸盘吸住了。
6。在没有等离子体的情况下，如果关掉被接通到直流电极（镶嵌在吸盘的电介质中）的高压（低流）直流电源，假若分布在晶片背面的电荷与分布在吸盘上面的电荷都是极化电荷，则晶片就被释放了，即吸力自动消失。
7。在没有等离子体的情况下，假若分布在晶片背面的电荷与分布在吸盘上面的电荷中有一部分是自由电荷，即使关掉被接通到直流电极（镶嵌在吸盘的电介质中）的高压（低流）直流电源，则晶片也不会完全被释放，即因残留电荷而仍存在一定的静电吸力。这种情况下，通常需要用反向的静电压来强制消除残留电荷，然后才能释放晶片。
8。在有等离子体的情况下，由于直流自偏压（self DC bias）的缘故，即使关掉被接通到直流电极（镶嵌在吸盘的电介质中）的高压（低流）直流电源，即在吸盘电压为零的情况下，晶片仍然会被吸盘·吸住。这是因为直流自偏压起到了吸盘电压的作用。在某些反应腔中（不是蚀刻机的），甚至不需要用高压（低流）直流电源的静电压，完全靠直流自偏压就足够完成吸住晶片的任务。所以，在处理完晶片后，需要一个释放菜单（dechucking recipe）来释放晶片，否则无法从反应腔中把晶片取出。
9。一般来说，迥斯热背类吸盘的吸力比库仑类的大。在对晶片温度控制要求很高的蚀刻机中，越来越多地采用迥斯热背类吸盘，其电介质通常是参杂的氮化铝陶瓷材料。氮化铝有很好的导热性。
10。晶片处理过程中，之所以需要把晶片牢牢地吸到吸盘表面，主要是增加晶片与吸盘之间的传热。此外，晶片背面与吸盘表面之间的氦气是传热的重要媒介。
11。在吸盘中，除了直流电极外，还有射频电极。射频电极用来提供晶片处理过程中需要的射频偏置功率。此外，吸盘中也需要冷却液的循环渠道和氦气的气道。其设计还是需要特别小心细致的。而且，它的设计受到别的方面的制约，如体积不能过大，否则会堵塞或降低反应腔的排气速度。

Ceramic Properties

Material Properties for Alumina Ceramics

Properties / Method	Unit	PEC94	PEC96	PEC995	PEC998
Composition	Weight %	96% Al₂O₃	99.5% Al₂O₃	99.8% Al₂O₃
Process	--	Sintered	Sintered	Sintered
Color	--	White	White	White	Ivory
Density	g/cm3	3.69	3.71	3.90	3.92
Flexural Strength / MOR	MPa	364	372	388	395
Fracture Toughness, K_(IC)/ Notched Beam	MPa m^1/2	4	4	5	5
Hardness / Knoop 1000g	Kg/mm²	1200	1200	1450	1500
Young’s Modulus	GPa	305	305	380	380
Poisson’s Ratio	--	0.21	0.21	0.22	0.22
Average Grain Size	Microns,	10	6	5	4
Max Use Temperature	Degrees °C	1725	1725	1725	1725
Thermal Shock Resistance, DT	°C	300	300	250	250
Gas Permeability	atm-cc/sec	None	None	None	None
Dielectric Constant	1 MHz, 25 °C	9.1	9.2	9.8	10.5
Thermal Expansion Coefficient (25-1000^oC)	/°C	7.8 x 10^-6	7.8 x 10^-6	8.0 x 10^-6	8.0 x 10^-6
Thermal Conductivity	W/m·°K, 20°C	22.5	24.9	29.0	30.0

Material Properties for Zirconia, Silicon Nitride, & EDM-Machinable Ceramics

Properties / Method	Unit	TZ-30D	TZ-30M	SSN-310	PEC EDM
Composition	Weight %	YTZP Zirconia High Strength	Mg-PSZ Zirconia	Silicon Nitride	EDM Machinable
Process	--	Sintered & HIPPED*	Sintered/ Toughened	Sinter- Reaction Bonded	Hot Pressed
Color	--	Varies (Gray-Green)	Ivory	Black	Black
Density	g/cm3	6.05	5.83	3.20	3.90
Flexural Strength/ Four Point Bending	MPa	1400	650	800	690>
Compressive Strength/ASTM-C773	MPa, 25 °C	2500	1750	--	--
Fracture Toughness, K_(IC)/SENB Notched Beam	MPa m^1/2	8	10	5.8
Young’s Modulus/ Pulse-Echo Method	GPa	220	200	310	406
Average Grain Size	Microns, m	< 1	20	--	< 3
Max Use Temperature Recommended Use Temp	Degrees °C Degrees °C	1500 < 280	1500 < 1150	1600 up to 1600	1600 up to 1600
Thermal Shock Resistance,DT	°C	400	400	500	--
Hardness / Knoop1000 g	Kg/mm²	1300	1200	1800	2400
Dielectric Constant	1 MHz, 25 °C	28	27	9	--
Electrical Resistivity	Ohm-cm	10¹³	10¹³	10¹⁴	9 x 10^-3
Thermal Expansion Coefficient (25-1000 ^oC)	/°C	10.3 x 10^-6	10.1 x 10^-6	3.1 x 10^-6	7.0 x 10^-6
Thermal Conductivity	W/m·°K, 25°C	2.2	2.2	26	63

Sunday, April 26, 2015

Porous Ceramic

The generic word ‘filtration’ can encompass many applications across a wide range of industries, the majority of which can be served by the commonly available filter media where process temperatures are low and / or the environment inert.

It therefore takes a very special medium to tackle the difficult and unusual conditions found in today's chemical, petrochemical or general process industries.

These difficult problems were solved by porous ceramic media that are chemically inert, stable and available in a variety of controlled and special grades, with temperature capabilities of up to 900ºC.

Available Ceramic Filter Media

We have a range of standard ceramic materials. Each has its unique characteristics and capabilities. The materials used most commonly are Pyrolith and Coralith.

Typical Filtration Tube Sizes

Various size,shape,pore size,porosity are available.

Flow Rates v Pressure Drop

Flow rate v pressure drop information can contact our sales rep.

Applications

Applications for filtration tubes fall into two main groups, each explained further on their own page:

Gas and Air Filtration
Liquid Filtration

Common Benefits

Controlled pore size
Controlled porosity and permeability
Coalescing capability
Chemically inert - can handle acidic gases
High Temperature capability to 900ºC
Range of standard element sizes
Low cost of ownership

Filter Cleaning

The cleaning properties of an element are dependent on the contaminate and the conditions. Normal methods of cleaning are surface brushing, back flushing or cleaning with a suitable solvent solution. With depth filter media, cleaning only usually removes surface contaminate with particles trapped in the pores being difficult to remove. Once the pressure drop across the filter reaches an unacceptable level, and cleaning has failed to restore the flow, then the filters should be replaced.

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Saturday, April 25, 2015

Porous Ceramics

Porous Ceramics: Application for Polyethylene Microspheres

Posted on March 13th, 2010 Microsphere Expert

Background:

Usually porous ceramics are made from aluminum oxide, silicon carbide or Zirconia. Most porous ceramics have a natural ability to fill pores by capillary action. This makes porous ceramics water accepting, thus they also are referred to as hydrophilic material. This means the pores and channels of a ceramic have a highly charged pore surface that attracts and bonds the polar molecules of water and other polar fluids. The net effect is called “wicking” — the ability to pull fluids into the material and transport that fluid by capillary forces. The pore size directly affects the ceramic’s air entry or bubbling pressure and hydraulic conductivity. The effective pore size is determined by the minimum orifice within a channel or pore.¹

Some porous ceramic have 40-50% open porosity with a tortuous pore structure and is available in pore sizes ranging from 0.25 to 90 microns. Monolithic, single grade, aluminum oxide porous ceramic is available in 6, 15, 30, 50, 60 and 90 micron pore sizes. In addition, some ceramic membranes can use a medium pore substrate with a thin coating of fine porous ceramic membrane in 0.25, 1, 3 and 6 micron pore sizes.²

How are Pores Formed?:

Extracted from US Patent 7033527 “Highly porous ceramics fabricated from preceramic polymer and expandable microspheres, and method for fabricating the same“⁴

Generally, porous ceramics are fabricated in accordance with two procedures as follows:

First, a ceramic is mixed with a pyrolyzable material or volatile material. Thereafter, gases are evolved by the pyrolysis of the pyrolyzable material or volatilizing the volatile material, and the evolving gases form pores in the ceramic to fabricate a porous ceramic (see, e.g., U.S. Pat. Nos. 5,358,910and 5,750,449).

In summary, after a ceramic and a preceramic polymer are mixed with each other by a ball milling process, the mixture is molded into a desired shape. The molded body is heated to fire combustible components and volatilize volatile components contained in the preceramic polymer (pyrolysis). The ceramic components contained in the molded body are sintered by heating, and the volatile components contained in the preceramic polymer are volatilized to form pores within the molded body, thereby fabricating a final porous ceramic.

However, this method has a disadvantage that when the content of the polymeric components is not less than 50%, the shape of the molded body may collapse due to softening and pyrolysis of the polymeric components. Accordingly, it is difficult to fabricate highly porous ceramics having a porosity of 70% or more. Further, uniform distribution of pores is difficult to obtain and pore size cannot be easily controlled according to the material properties.

Second, a porous ceramic can be fabricated by lowering the sinterability of a ceramic. This method is divided into the following two procedures. The first method is carried out by sintering a ceramic below optimum sintering temperature to lower the relative density of the ceramic, thereby forming more pores within the ceramic. However, since the porous ceramic thus fabricated is not sintered at optimum sintering conditions, mechanical properties such as strength may be greatly deteriorated.

A common material used as the preceramic polymer is polyethylene microspheres. The advantage of using PE microspheres is thatPolyethylene is a simple polymer that burns out clean and leave no residue in the ceramic, unlike many other plastics that may leave some residue. Polyethylene will auto-ignite at temperatures above 410°C.⁵

Another approach using polyethylene microspheres is in gelcasting of dense and porour ceramics with a mixture of natural gelatine and polyethylene microspheres. as seen in “Gelcasting of dense and porous ceramics by using a natural gelatine”, published in the Journal of Porous Materials, Volume 16, Number 4 / August, 2009.³ The abstract follows:

Abstract

An improved gel-casting procedure was successfully exploited to produce porous ceramic bodies having controlled porosity features in terms of mean pore size, total pore volume as well as pore geometry. The gel-casting process in which a natural gelatine for food industry is used as gelling agent was firstly set-up to prepare dense alumina and zirconia components. Then, commercial PE spheres, sieved to select proper dimensional ranges, were added to the starting slurries as pore-forming agent. Both alumina and zirconia porous bodies were then produced, having a porosity ranging between 40 and 50 vol%. The fired components were characterised by spherical pores surrounded by highly dense ceramic walls and struts, having a homogeneous and fine microstructure. Their mean pore size was directly dependent on the sieved fraction of the starting PE spheres selected as pore-forming phase.

Conclusion:

Polymer microspheres offer an excellent solution to creating precise pore sizes in ceramics at reasonable prices. Polyethylene microspheres offer the added benefit of minimal residue after firing, and the availability in wide size ranges from a few micron up to 1000um (1mm). Highly spherical microspheres have the added benefit of creating strong pores without any stress risers that might cause fracturing of the parent ceramic.

References: