公开(公告)号：US20200174316A1

公开(公告)日：2020-06-04

申请号：US16618973

申请日：2018-06-01

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HIROYUKI HAKOI ,  AKIRA SAKAI ,  KIYOSHI MINOURA

IPC: G02F1/1335 ,  G02F1/13357

Abstract: The present invention provides a liquid crystal display device which has a high luminance and consumes less power by increasing the utilization efficiency of light. The liquid crystal display device includes: a first absorptive polarizing plate; a liquid crystal panel including a first substrate, a liquid crystal layer, and a second substrate in order from the first absorptive polarizing plate side; a second polarizing plate; and a backlight unit including a reflector in the stated order. The second substrate includes a reflective layer facing the second polarizing plate. A transmittance of polarized light vibrating in a direction parallel to a transmission axis of the second polarizing plate is greater than a transmittance of polarized light vibrating in a direction parallel to a transmission axis of the first absorptive polarizing plate.

公开(公告)号：US20200041830A1

公开(公告)日：2020-02-06

申请号：US16499145

申请日：2018-03-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： KOJI MURATA ,  AKIRA SAKAI ,  YUICHI KAWAHIRA ,  MASAHIRO HASEGAWA ,  TAKAKO KOIDE ,  KOZO NAKAMURA ,  KIYOSHI MINOURA

IPC: G02F1/13363 ,  G02F1/1335

Abstract: The present invention provides a retardation substrate capable of producing a liquid crystal display device more easily and a liquid crystal display device provided with the retardation substrate.The retardation substrate of the present invention is a retardation substrate including a base material and an optical functional layer provided on one surface of the base material, in which the optical functional layer includes a retardation layer, and a direction of a slow axis of a surface of the optical functional layer is different from a direction of a slow axis inside the retardation layer.

公开(公告)号：US20190384101A1

公开(公告)日：2019-12-19

申请号：US16486726

申请日：2018-02-14

Applicant: SHARP KABUSHIKI KAISHA

Inventor： AKIRA SAKAI ,  YUICHI KAWAHIRA ,  KOJI MURATA ,  MASAHIRO HASEGAWA ,  TAKAKO KOIDE ,  KOZO NAKAMURA ,  KIYOSHI MINOURA

IPC: G02F1/1335 ,  G02F1/13363 ,  G02F1/1339

Abstract: A liquid crystal display panel includes a first λ/4 retardation layer, a first substrate, a color filter layer, a liquid crystal layer containing horizontally aligned liquid crystals, and a second λ/4 retardation layer that is formed from a different material from the first λ/4 retardation layer between the first substrate and the color filter layer or between the color filter layer and the liquid crystal layer. The second λ/4 retardation layer has a smaller thickness in a region overlapping the blue color filter than in a region overlapping the green color filter. The first λ/4 retardation layer provides a retardation Rout(λ) to light having a wavelength of λ nm. The second λ/4 retardation layer provides a retardation Rin(λ). The retardation Rout(λ) and the retardation Rin(λ) satisfy the following formula (1) in the region overlapping the blue color filter. −1.0 nm

公开(公告)号：US20190278010A1

公开(公告)日：2019-09-12

申请号：US16291841

申请日：2019-03-04

Applicant: SHARP KABUSHIKI KAISHA

Inventor： AKIRA SAKAI ,  MASAHIRO HASEGAWA ,  KOJI MURATA ,  YUICHI KAWAHIRA ,  TAKAKO KOIDE ,  KIYOSHI MINOURA

IPC: G02B5/30 ,  H01L27/32 ,  G02F1/1335 ,  G02F1/13363

Abstract: A circularly polarizing plate includes: a first retardation layer having negative refractive index anisotropy; a second retardation layer having positive refractive index anisotropy; and a linear polarizer, the first retardation layer and the second retardation layer being disposed such that their optical axes are parallel to each other, the first retardation layer providing an in-plane retardation whose absolute value is |R1(λ)| to light having a wavelength of λ nm, the second retardation layer providing an in-plane retardation whose absolute value is |R2(λ)| to light having a wavelength of λ nm, the first retardation layer and the second retardation layer satisfying the following formulas (1) to (4): |R1(450)|>|R1(550)|>|R1(650)|  (1) |R2(550)|>|R1(550)|  (2) |R2(550)|−|R1(550)|>|R2(450)|−|R1(450)|  (3) |R2(650)|−|R1(650)|>|R2(550)|−|R1(550)|  (4)

公开(公告)号：US20190227378A1

公开(公告)日：2019-07-25

申请号：US16314780

申请日：2017-06-29

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISASHI WATANABE ,  AKIRA SAKAI ,  HIROYUKI HAKOI ,  MASAKI TABATA

IPC: G02F1/1335

Abstract: The present invention provides a display device that can display chromatic color(s) and pattern(s) without power consumption in the non-display state (light off state) and an electronic apparatus including the display device. The display device includes a display panel and a transflective reflector disposed on a viewing surface side of the display panel. The transflective reflector includes a reflective polarizer and a color polarizer disposed on a side closer to the viewing surface than the reflective polarizer.

公开(公告)号：US20190171052A1

公开(公告)日：2019-06-06

申请号：US16321330

申请日：2017-07-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MASAHIRO HASEGAWA ,  KOJI MURATA ,  YUICHI KAWAHIRA ,  TAKAKO KOIDE ,  KOZO NAKAMURA ,  AKIRA SAKAI ,  KIYOSHI MINOURA

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1339

Abstract: A liquid crystal display panel of the present invention includes, sequentially from the viewer side: a first linearly polarizing plate; a first λ/4-wavelength layer; a first substrate including a color filter, a black matrix, and a second λ/4-wavelength layer; a liquid crystal layer; a second substrate; and a second linearly polarizing plate, the liquid crystal display panel further including a sealing material disposed so as to surround the liquid crystal layer in a plan view, wherein the second λ/4-wavelength layer is disposed closer to the liquid crystal layer than the color filter and the black matrix are and such that an outer edge of the second λ/4-wavelength layer lies inside an arrangement region of the sealing material, and the first λ/4-wavelength layer and the second λ/4-wavelength layer are disposed such that their slow axes are perpendicular to each other.

公开(公告)号：US20190155107A1

公开(公告)日：2019-05-23

申请号：US16313817

申请日：2017-07-03

Applicant: SHARP KABUSHIKI KAISHA

Inventor： MASANOBU MIZUSAKI ,  HIROSHI TSUCHIYA ,  KIYOSHI MINOURA ,  AKIRA SAKAI

IPC: G02F1/1337 ,  G02F1/1334

Abstract: The present invention provides a liquid crystal display device having excellent visibility outdoors, and a method for producing a liquid crystal display device capable of producing such a liquid crystal display device. The liquid crystal display device includes: a pair of substrates; a liquid crystal layer that is sandwiched between the pair of substrates and contains a liquid crystal material; and an alignment control layer that is in contact with the liquid crystal layer, at least one of the pair of substrates including a retardation layer on its liquid crystal layer side, the alignment control layer aligning the liquid crystal material in a direction horizontal to faces of the substrates, and containing a polymer containing at least a unit derived from a specific first monomer.