Light diffusion member, method for manufacturing same, and display device

• Main Authors: Kanno Toru, Yui Hideomi, Asaoka Yasushi, Katsuta Shohei, Yamamoto Emi
• Format: Patent
• Language: English
• Published: 19.12.2017
• Subjects: BLASTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

A light diffusion member includes a substrate that has optical transparency, a light diffusion portion that is formed with a prescribed height on one surface of the substrate, a light shielding layer that is formed with a thickness less than the height of the light diffusion portion in another region of the one surface of the substrate than the light diffusion portion, and an antiglare layer that is formed on the other surface of the substrate. The light diffusion portion includes a light emission end surface that contacts with the substrate, a light incident end surface that faces the light emission end surface and has a larger area than an area of the light emission end surface, and a side surface that is formed between the light emission end surface and the light incident end surface, and the antiglare layer includes a binder layer and plural light diffusion particles that are dispersedly arranged in the binder layer.