Light-diffusing-member manufacturing method and manufacturing device

Patent metadata

Field	Value
Publication number	US-2016259097-A1
Application number	US-201415032124-A
Country	US
Kind code	A1
Filing date	Oct 28, 2014
Priority date	Oct 30, 2013
Publication date	Sep 8, 2016
Grant date	—

Abstract

A light-diffusing-member manufacturing method includes a step of forming a light diffusion portion on one surface side of a base, by developing an exposed negative photosensitive resin layer with an alkali developing solution, and a step of performing an acid treatment on the light diffusion portion with an acid solution, after removing the alkali developing solution which is adhered to the light diffusion portion and suspended matter in the alkali developing solution in the negative photosensitive resin layer, so as to lower an ionization degree of the negative photosensitive resin layer which is in an ionized state due to the alkali developing solution.

First claim

1 . A light-diffusing-member manufacturing method comprising:
a step of forming a light shielding layer on one surface of a base with optical transparency; a step of forming a negative photosensitive resin layer with optical transparency so as to cover the light shielding layer on the one surface of the base; a step of exposing the negative photosensitive resin layer by irradiating the negative photosensitive resin layer with ultraviolet light, from a surface on an opposite side of the one surface of the base having the light shielding layer and the negative photosensitive resin layer formed therein, through the base at a region other than a region having the light shielding layer formed therein; a step of forming a light diffusion portion having a light-emitting end surface on the base side, and having a light incident end surface of a larger area than the area of the light-emitting end surface on the opposite side of the base side, on the one surface side of the base, by developing the negative photosensitive resin layer with an alkali developing solution, after the exposure; and a step of performing an acid treatment on the light diffusion portion with an acid solution, after removing the alkali developing solution which is adhered to the light diffusion portion and suspended matter in the alkali developing solution in the negative photosensitive resin layer, so as to lower an ionization degree of the negative photosensitive resin layer which is in an ionized state due to the alkali developing solution.

2 . The light-diffusing-member manufacturing method according to claim 1 ,
wherein in the step of performing an acid treatment, the acid solution is diffused into the light diffusion portion by physical stimuli.

3 . The light-diffusing-member manufacturing method according to claim 1 ,
wherein in the step of performing an acid treatment, the light diffusion portion and the acid solution are heated.

4 . The light-diffusing-member manufacturing method according to claim 1 ,
wherein in the step of performing an acid treatment, the acid solution is vaporized, and the vaporized acid solution is diffused into the light diffusion portion.

5 . A light-diffusing-member manufacturing device comprising:
means for forming a light diffusion portion having a light-emitting end surface on a base side, and having a light incident end surface of a larger area than the area of the light-emitting end surface on the opposite side of the base side, on the one surface side of the base, by developing a negative photosensitive resin layer with an alkali developing solution, the negative photosensitive resin layer being formed by exposing a negative photosensitive resin layer with optical transparency applied so as to cover a light shielding layer, on one surface of the base with optical transparency having the light shielding layer formed therein; and means for performing an acid treatment on the light diffusion portion with an acid solution, after removing the alkali developing solution which is adhered to the light diffusion portion and suspended matter in the alkali developing solution in the negative photosensitive resin layer, so as to lower an ionization degree of the negative photosensitive resin layer which is in an ionized state due to the alkali developing solution.

6 . A light diffusing member which is manufactured by the light-diffusing-member manufacturing method according to claim 1 .

7 . A display comprising the light diffusing member according to claim 6 .

Assignees

• Sharp Kk

Inventors

• OCHI Sho
• Asaoka Yasushi
• Maeda Tsuyoshi
• Kanno Toru

Classifications

• G02B5/201

  in the form of arrays · CPC title

• G03F7/40

  Treatment after imagewise removal, e.g. baking · CPC title

• G02B5/045

  Prism arrays · CPC title

• G02B5/0231

  the surface having microprismatic or micropyramidal shape (macroscopic prism arrays G02B5/045) · CPC title

• G03F7/405

  Treatment with inorganic or organometallic reagents after imagewise removal · CPC title