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:
Jul. 07, 2020
Filed:
Sep. 07, 2017
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Tomoyuki Ishihara, Sakai, JP;
Masamitsu Kobayashi, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A light source sectionincludes a red light source, a green light source, and a blue light source, and one frame period is divided into four subfield periods. Light sources of each color respectively emit light in blue, green, and red subfield periods, and the red light sourceand the green light sourceemit light in a yellow subfield period. Light emission intensity of the blue light sourcein the blue subfield period is set to twice light emission intensities of the red light sourceand the green light sourcein other subfield periods. Color breakup is reduced by displaying the yellow subfield, and light utilization efficiency improved by setting transmittance of a light modulation elementto 100% when a white signal by which each gradation of red, green, and blue becomes maximum is input. With this, a field sequential type display device which can reduce color breakup and has high light utilization efficiency is provided.