US 9,810,834 B2
Optical sheet holding structure and display apparatus
Ryota Kawabata, Sakai (JP); and Kouji Matsumoto, Sakai (JP)
Assigned to Sakai Display Products Corporation, Sakai-shi, Osaka (JP)
Appl. No. 15/38,855
Filed by Sakai Display Products Corporation, Sakai-shi, Osaka (JP)
PCT Filed Nov. 25, 2013, PCT No. PCT/JP2013/081630
§ 371(c)(1), (2) Date May 24, 2016,
PCT Pub. No. WO2015/075834, PCT Pub. Date May 28, 2015.
Prior Publication US 2016/0356952 A1, Dec. 8, 2016
Int. Cl. F21V 8/00 (2006.01); G02F 1/1333 (2006.01); G02F 1/1335 (2006.01); F21V 17/00 (2006.01)
CPC G02B 6/0088 (2013.01) [F21V 17/00 (2013.01); G02F 1/133308 (2013.01); G02F 1/133606 (2013.01); G02F 2001/133317 (2013.01); G02F 2001/133607 (2013.01); G02F 2201/46 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical sheet holding structure comprising:
a frame body holding peripheral edge parts of the optical sheet at a holding surface of flat and hollow shape, and
an engaging part including a base provided protrusively from the holding surface, and an engagement piece provided parallel to the holding surface from a front tip of the base to an outside of the frame body, and being engaged with an engagement hole provided in the peripheral edge part of the optical sheet, wherein
a length of the base in a direction perpendicular to a circumferential direction of the frame body and a length of the engagement hole in a direction perpendicular to a circumferential direction of the optical sheet are the same as each other, and
a distance between the holding surface and the engagement piece is the same as a sheet thickness of the optical sheet.