Title:
DOUBLE-SIDED ADHESIVE SHEET FOR TRANSFER
Document Type and Number:
WIPO Patent Application WO/2022/131306
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a double-sided adhesive sheet for transfer, said double-sided adhesive sheet being not susceptible to a positional shift of an electronic component even if irradiated with ultraviolet light, thereby being capable of maintaining transfer accuracy. A double-sided adhesive sheet for transfer according to the present invention is obtained by sequentially stacking a first adhesive layer, a base material and a second adhesive layer, in this order; the first adhesive layer is composed of a low-adhesion adhesive layer, while the second adhesive layer is composed of a releasable adhesive layer; and if the first adhesive layer is irradiated with an ultraviolet laser having a wavelength of 248 nm with a beam size of 130 × 105 μm, an output of 100 mJ/cm2, a pulse width of 10 ns and a frequency of 100 Hz, the ratio of the lifting height before irradiation Rz1 to the lifting height after irradiation Rz2, namely (Rz1/Rz2) is from 0.2 to 1,600.
Inventors:
OCHI GENKI (JP)
OKITA NATSUKO (JP)
NORO HIROSHI (JP)
OKITA NATSUKO (JP)
NORO HIROSHI (JP)
Application Number:
PCT/JP2021/046350
Publication Date:
June 23, 2022
Filing Date:
December 15, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J11/06; C09J7/22; C09J7/38; C09J133/14; C09J175/04; C09J183/04; C09J183/07; C09J201/00; H01L21/52; H01L21/60; H01L21/683
Domestic Patent References:
| WO2018096858A1 | 2018-05-31 | |||
| WO2021131517A1 | 2021-07-01 |
Foreign References:
| JP2005263876A | 2005-09-29 | |||
| JP2017031331A | 2017-02-09 | |||
| JP2001085360A | 2001-03-30 | |||
| JP2003324142A | 2003-11-14 | |||
| JP2004186279A | 2004-07-02 | |||
| JP2013075978A | 2013-04-25 |
Attorney, Agent or Firm:
GOTO & CO. (JP)
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