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Title:
POLARIZATION AXIS DETECTING DEVICE, POLARIZATION AXIS DETECTING METHOD, DISPLAY DEVICE MANUFACTURING METHOD, AND DISPLAY DEVICE MANUFACTURED USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/061419
Kind Code:
A1
Abstract:
The purpose of the present invention is to enable a polarization axis to be easily detected irrespective of the shape of a polarization plate, even in the case of a circular polarization plate or an irregularly shaped polarization plate. The present invention comprises: an irradiation head 12 that emits sensor light; a rotating stage 11 on which a polarization plate is mounted; a light receiving head 13 that receives sensor light that has passed through the polarization plate on the stage 11 and that outputs a signal corresponding to the amount of light received; and an arithmetic circuit 15 that detects the orientation of a polarization axis of the polarization plate on the basis of the signal output from the light receiving head 13. Reference data based on a signal output from the light receiving head 13, in a state where the polarization plate is disposed with the polarization axis thereof oriented in a desired direction, is stored in advance in a storage unit that can be accessed by the arithmetic circuit 15. The polarization plate is irradiated with the sensor light while the stage is being rotated and the arithmetic circuit 15 detects the orientation of the polarization axis of the polarization plate on the stage on the basis of the signal output from the light receiving unit and the reference data.

Inventors:
TANIGUCHI YUHJI
OHYAMA MASATAKA
YAMAGUCHI KATSUHIRO
Application Number:
PCT/JP2016/079468
Publication Date:
April 13, 2017
Filing Date:
October 04, 2016
Export Citation:
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Assignee:
SHARP KK (JP)
International Classes:
G01N21/21; G01J4/04; G01M11/00; G02B5/30; G02F1/13; G02F1/1335; H01L51/50; H05B33/02
Foreign References:
JP2006201152A2006-08-03
JPS60231106A1985-11-16
JP2003161935A2003-06-06
JP2008139274A2008-06-19
Attorney, Agent or Firm:
KAWAKAMI Keiko et al. (JP)
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