Title:
DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/146807
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a display device for which variations in display-unit luminance and chromacity can be improved. This display device comprises: a first display unit (1) having disposed therein a plurality of first light-emitting elements (1a) the lighting of which is controlled by a first driving unit (6); a second display unit (2) having disposed therein a plurality of second light-emitting elements (2a) the lighting of which is controlled by a second driving unit (9); a luminance measuring unit (100) for measuring the luminance of the plurality of second light-emitting elements (2a); and a luminance correcting unit (18) for correcting luminance information on the basis of the measured luminance, such luminance information being included in a signal associated with the lighting control of each of the first light-emitting elements (1a). The first driving unit (6) controls the lighting of each of the first light-emitting elements (1a) on the basis of the corrected signal. The luminance measuring unit (100) includes a light-receiving element (10) and an integrator element (20). The light-receiving element (10) receives the light rays emitted from the plurality of second light-emitting elements (2a) and thereby measures luminance. The integrator element (20) is disposed between the second display unit (2) and the light-receiving element (10). The cross-section of the integrator element has a cylindrical shape larger than the region in which the plurality of second light-emitting elements (2a) are disposed, and the light rays emitted from the plurality of second light-emitting elements (2a) pass through the inside of such cylindrical shape and are guided to the light-receiving element (10).
Inventors:
TAGUCHI HIROKAZU (JP)
Application Number:
PCT/JP2017/005117
Publication Date:
August 16, 2018
Filing Date:
February 13, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G09F9/33; G09F9/00; G09G3/20; G09G3/32
Foreign References:
| US20110242074A1 | 2011-10-06 | |||
| JP2009141302A | 2009-06-25 | |||
| JP2013519113A | 2013-05-23 | |||
| JP2005201962A | 2005-07-28 | |||
| JP2003090780A | 2003-03-28 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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