Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
DISPLAY PANEL, DISPLAY DEVICE, AND METHOD FOR SORTING PHASE DIFFERENCE LAYER OF DISPLAY PANEL
Document Type and Number:
WIPO Patent Application WO/2019/189561
Kind Code:
A1
Abstract:
Provided is a display panel with which it is possible to inhibit a decrease in hue, regardless of the reflectivity of a display element. A display panel, having a display element (A), a phase difference layer (B) disposed on the light emission surface side of the display element, and a polarizer (C) disposed on the light emission surface side of the phase difference layer. The phase difference layer (B) has a λ/4 phase difference layer (B1). The in-plane phase difference of λ/4 phase difference layer (B1) satisfies the following condition 1. The spectral reflectance of the display element is measured by the SCI method, and R1/R2 is calculated, with R1 being the average reflectance for 400 nm to below 500 nm, and R2 being the average reflectance for 550 nm to below 700 nm. When x is deemed to represent the value of R1/R2, the in-plane phase difference of the λ/4 phase difference layer is -4.6002x + 119.24 nm to -4.6002x + 129.24 nm inclusive.

Inventors:
EMORI, Satoshi (1-1-1, Ichigaya-Kagacho, Shinjuku-k, Tokyo 01, 〒1628001, JP)
KURODA, Takashi (1-1-1, Ichigaya-Kagacho, Shinjuku-k, Tokyo 01, 〒1628001, JP)
Application Number:
JP2019/013561
Publication Date:
October 03, 2019
Filing Date:
March 28, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAI NIPPON PRINTING CO., LTD. (1-1-1, Ichigaya-Kagacho Shinjuku-k, Tokyo 01, 〒1628001, JP)
International Classes:
H05B33/02; G02B5/30; G09F9/00; H01L27/32; H01L51/50
Domestic Patent References:
WO2014073616A12014-05-15
WO2002033451A12002-04-25
Foreign References:
JP2017138401A2017-08-10
JP2016192363A2016-11-10
JP2013092632A2013-05-16
JP2012027322A2012-02-09
JP2003302503A2003-10-24
US20160308170A12016-10-20
US20160025913A12016-01-28
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (Toranomon ES Bldg. 7F, 25-2 Toranomon 3-chome, Minato-k, Tokyo 01, 〒1050001, JP)
Download PDF: