IP Library › Granted Patent US 12,443,063
Granted Patent B2
US 12,443,063 · App. 18/655,435 · Granted Oct 14, 2025

Electro-optical device and electronic equipment

Inventors: Kaoru Inoue (Tokyo, JP); Hiromichi Tanaka (Tokyo, JP); Takeshi Kaneki (Tokyo, JP)
Assignee: Magnolia White Corporation
G02F1/133308G02F1/133512G02F1/133514G02F1/133528G02F1/1368
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,443,063
App. No.
18/655,435
Granted
Oct 14, 2025
Kind
B2
Abstract

A display device which is an electro-optical device includes a panel including a first substrate, a second substrate, and a liquid crystal layer and having a display region, a transparent region provided inside the display region, and a frame region provided between the transparent region and the display region. A backlight unit is provided below the panel so as not to overlap with the transparent region. A bezel is provided below the backlight unit so as not to overlap with the transparent region. A cover member is provided above the second substrate so as to overlap with the transparent region. Also, a cap film made of a material different from that of the bezel covers at least a lateral side of the backlight unit in the frame region.

Claims (32)

1. An electro-optical device comprising:

a panel including a first substrate, a second substrate provided above the first substrate, and an electro-optical layer formed between the first substrate and the second substrate, the panel having a display region;

a transparent region provided inside the display region in a plan view;

a frame region provided between the transparent region and the display region in the plan view;

a cover member provided above the second substrate of the panel so as to overlap with the transparent region in the plan view;

a backlight unit provided below the first substrate of the panel so as not to overlap with the transparent region in the plan view; and

a bezel provided below the backlight unit so as not to overlap with the transparent region in the plan view,

wherein the bezel includes a bottom portion configured to cover a lower side of the backlight unit, a side portion provided on a lateral side of the backlight unit in the frame region, and an upper portion bonded to the panel via a first adhesive layer in the frame region,

a width of the upper portion of the bezel is larger than a width of the side portion of the bezel in the plan view,

a hole is formed in the panel so as to penetrate the first substrate, the electro-optical layer, and the second substrate in a part of the frame region and the transparent region,

a light-blocking film is formed between the first substrate and the second substrate in the frame region,

the cover member is provided above the panel having the hole, and

the electro-optical device further comprising a third adhesive layer bonded to each of the bezel and the cover member so as to cover each lateral side of the upper portion of the bezel, the first adhesive layer, and the panel in the frame region.

2. The electro-optical device according to claim 1 , wherein the panel further includes a polarizing plate formed below the first substrate in the display region and the frame region;

the backlight unit includes a reflection film provided over the bottom portion of the bezel, a light guide layer formed over the reflection film and configured to transmit light, and an optical sheet formed over the light guide layer; and

the polarizing plate, the upper portion of the bezel, and the optical sheet are bonded by the first adhesive layer.

3. The electro-optical device according to claim 1 ,

wherein the panel further includes a polarizing plate formed below the first substrate in the display region and the frame region;

the backlight unit includes a reflection film provided over the bottom portion of the bezel, a light guide layer formed over the reflection film and configured to transmit light, and an optical sheet formed over the light guide layer;

a side surface of the polarizing plate is located at a position closer to the display region than the side portion of the bezel; and

the first substrate, the upper portion of the bezel, and the optical sheet are bonded by the first adhesive layer.

4. The electro-optical device according to claim 1 ,

wherein the first substrate, the second substrate, and the electro-optical layer are provided also in the frame region and the transparent region; and

further comprising a light-blocking film formed between the first substrate and the second substrate in the frame region.

5. The electro-optical device according to claim 4 , further comprising:

a second adhesive layer bonded to each of the bezel and the first substrate so as to cover each lateral side of the upper portion of the bezel and the first adhesive layer in the frame region.

6. The electro-optical device according to claim 1 ,

wherein the bezel is made of a metal material.

7. The electro-optical device according to claim 6 ,

wherein the electro-optical layer is a liquid crystal layer;

the first substrate includes a plurality of transistors in the display region; and

the second substrate includes a plurality of color filters in the display region.

Assignments (2)
CHANGE OF NAME Recorded Jun 26, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 071527/0845 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 6, 2024
From: INOUE, KAORU; TANAKA, HIROMICHI; KANEKI, TAKESHI
To: JAPAN DISPLAY INC.
Reel/Frame 067320/0088 →
Priority Claims (1)
JP 2019-043335 · Mar 11, 2019 · national
Continuity (5)
Continuation 18335377 · Jun 15, 2023
Continuation 17721746 · Apr 15, 2022
Continuation 17375509 · Jul 14, 2021
Continuation 16812426 · Mar 9, 2020
Related Publication 20240288722A1 · Aug 29, 2024
References Cited (28)
US 9778411B2 · Yuki et al. · 2017 [cited by applicant]
US 20120105400A1 · Mathew et al. · 2012 [cited by applicant]
US 20130177302A1 · Weber · 2013 [cited by applicant]
US 20150077624A1 · Havskjold et al. · 2015 [cited by applicant]
US 20160011633A1 · Watanabe et al. · 2016 [cited by applicant]
US 20160161664A1 · Ishida et al. · 2016 [cited by applicant]
US 20170090113A1 · Yuki et al. · 2017 [cited by applicant]
US 20170153488A1 · Shin · 2017 [cited by applicant]
US 20170187934A1 · Kwak et al. · 2017 [cited by applicant]
US 20170289694A1 · Choi et al. · 2017 [cited by applicant]
US 20190072822A1 · Yasunaga et al. · 2019 [cited by applicant]
US 20200064681A1 · Son et al. · 2020 [cited by applicant]
US 20200186688A1 · Chen et al. · 2020 [cited by applicant]
US 20200192148A1 · Kim et al. · 2020 [cited by applicant]
US 20200241358A1 · Inui · 2020 [cited by applicant]
CN 108681150A · 2018 [cited by applicant]
CN 108990336A · 2018 [cited by applicant]
CN 109031756A · 2018 [cited by applicant]
CN 109100892A · 2018 [cited by applicant]
CN 109116628A · 2019 [cited by examiner]
CN 109445162A · 2019 [cited by applicant]
JP 2012098726A · 2012 [cited by applicant]
JP 2017142497A · 2017 [cited by applicant]
WO 2015022887A1 · 2015 [cited by applicant]
WO 2015178299A1 · 2015 [cited by applicant]
English Translation of CN-108990336-A, Title: Electronic Device, Author: Tang Yimei; Cheng Jiao; Liu Min; Ouyang Zhibin; Date of publication: Dec. 11, 2018 (Year: 2018). [cited by applicant]
Office Action issued on Oct. 10, 2022, in connection with corresponding Chinese Application No. 202010145556.5 (16 pp., including English-language translation). [cited by applicant]
Office Action issued on Nov. 1, 2022, in connection with corresponding Japanese Application No. 2019-043335 (10 pp., including English-language translation). [cited by applicant]