The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2020
Filed:
Aug. 10, 2018
Keiwa Inc., Tokyo, JP;
Motohiko Okabe, Tokyo, JP;
Hirohisa Dejima, Tokyo, JP;
Keiwa Inc., Tokyo, JP;
Abstract
A buffer sheet is provided capable of sufficiently inhibiting scratches on the prism sheet upon an impact applied by falling, etc. The buffer sheet is for use in a flat panel display including a prism sheet having prisms on a surface thereof and a display element disposed to face the prisms, wherein the buffer sheet is to be disposed between the prism sheet and the display element, and an average microindentation hardness of the buffer sheet is no greater than 250 N/mm. The buffer sheet preferably has projections on a face on a side to face the prism sheet. The average microindentation hardness is preferably measured at the projections. The buffer sheet preferably includes a buffer layer to face the prism sheet, the buffer layer preferably containing a resin matrix and resin beads dispersed in the resin matrix. A haze value of the buffer sheet is preferably 20%-95%.