Single crystal wafer of lithium tantalate

Details Single crystal wafer of lithium tantalate Single crystal wafer of lithium tantalate

1988-07-19

1990-02-06

Straub, Gary P.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

310313R, 333193, 73866, C30B 2930, C30B 3300, H01L 4101, H03H 900

Patent

active

048986410

ABSTRACT:
The single crystal wafer of lithium tantalate provided by the invention is characterized by the limited range of variation of the value of double refraction which should not exceed .+-.6.times.10.sup.-4 so that the value of the double refraction is given by 4.5.times.10.sup.-3 .+-.6.times.10.sup.-4. When single crystal wafers of lithium tantalate each satisfying the above requirements are used for the manufacture of SAW devices, the devices may have a very small deviation of the SAW sound velocity from the standard value and the range of variation of the SAW sound velocity within a wafer is also very small so that the SAW devices can be manufactured with greatly improved productivity and excellent quality.

REFERENCES:
patent: 3788890 (1974-01-01), Mader
patent: 3976535 (1976-08-01), Barnes
patent: 4257825 (1981-03-01), Schaumburg
patent: 4755314 (1988-07-01), Sakaguichi et al.
patent: 4776917 (1988-10-01), Ogihara et al.
Tien et al., Optical Waveguide Modes in Single Crystalline LiNBO.sub.3 LiTaO.sub.3 Solid Solution Films, Applied Phys. Ltrs, vol. 24, 10 May 74, pp 503-506.
Miyazawa Growth of LiNBO.sub.3 LiTaO.sub.3 Single Crystal Films for Optical Waveguides, Applied Physc Ltrs, vol. 23, #4, Aug. 73, pp. 198-200.
Chin et al., Diffusion Kinetics & Optical Quality in LiNBO.sub.3 -LiTaO.sub.3 Optical Waveguides Applied Phys Ltrs, vol. 26, #11, Jun. 75, pp. 637-639.
Smith et al., Correcation of Reduction in Optical Induced Refraction Induced Refractive Index in Homogenity with on Content in LiTaO.sub.2 & LiNBO.sub.3, J. Appl. Phys, vol. 30, #10, Sep. 61, pp. 4600-4602.
Rudd et al., Growth of Lithium Tantalate Crystals for Transmission Resonator and Ricterdeuress Bell Lab Research May, 1972, pp. 14-18.
Luiacono Optical Transmission Variance in Lithium Tantalate, Applied Optics, vol. 7, #3, Mar. 68, pp. 555-556.
Kosasaki Single Crystal Growth & Physical Propities of LiTAO.sub.3 Review of Electrochemical Communication Laboratories, vol. 20, #1, Jan.-Feb. 82, pp. 129-137.
Ballman Curie Temperature & Birefringement Variation in Ferroelectric Lithium Tantalate as a Function of Melt Stoichiometry, J. American Ceramic Soc., vol. 50, #12, Dec. 67, pp. 657-659.

Affiliated with

Also associated with

Rating

Single crystal wafer of lithium tantalate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single crystal wafer of lithium tantalate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single crystal wafer of lithium tantalate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-440349