IP Library Granted Patent US 12,345,973
Granted Patent B2
US 12,345,973 · App. 18/126,040 · Granted Jul 1, 2025

Display device

Inventors: Yasunobu Inaba (Kanagawa Ken, JP); Yuji Matsumoto (Kanagawa Ken, JP)
Assignee: PANASONIC AUTOMOTIVE SYSTEMS CO., LTD.
G02F1/133314B60R1/04B60R1/12G02F1/133512G02F1/133553G02F1/1347G02F1/137B60R2001/1215B60R2300/10B60R2300/20G02F2202/28G02F2203/48
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 12,345,973
App. No.
18/126,040
Granted
Jul 1, 2025
Kind
B2
Abstract

A display device according to the present disclosure includes an optical member, a first electro-optical member, a housing, and an adhesive layer. The optical member has translucency and has a back surface including a first region and a second region outside the first region. The first electro-optical member is disposed on a back surface side of the optical member, has an optical characteristic changed with voltage application, and has a back surface including a third region and a fourth region outside the third region. The housing is disposed on the back surface side of the optical member and outside the first electro-optical member, and has a protruding portion extending along the back surface of the first electro-optical member. The adhesive layer is disposed between the third region and the protruding portion.

Claims (46)

1. A display device comprising:

an optical member that has translucency and has a back surface including a first region and a second region outside the first region;

a first electro-optical member that is disposed on the back surface side of the optical member, has an optical characteristic changed with voltage application, and has a back surface including a third region and a fourth region outside the third region;

a housing that is disposed on the back surface side of the optical member and outside the first electro-optical member, and has a protruding portion extending along the back surface of the first electro-optical member;

an adhesive layer that is disposed between the fourth region and the protruding portion in a direction perpendicular to a front surface of the optical member;

a half mirror film that covers the third region; and

a light shielding frame that covers the second region, wherein

when viewed from the direction perpendicular to the front surface of the optical member, the light shielding frame and the half mirror film have an overlapping portion that is stripe-shaped and a width of the overlapping portion is 0.5 mm or less, and

the first electro-optical member is provided between the light shielding frame and the half mirror film in the direction perpendicular to the front surface of the optical member.

2. The display device according to claim 1 , further comprising

a second electro-optical member that is disposed on the back surface side of the first electro-optical member and has an optical characteristic that is changeable with voltage application.

3. The display device according to claim 1 , wherein

the half mirror film covers the first region and the second region,

the half mirror film has a back surface including a fifth region and a sixth region outside the fifth region, and

the light shielding frame covers the sixth region.

4. The display device according to claim 1 , wherein

the housing has a side wall portion that covers an end surface of the first electro-optical member externally, outside the first electro-optical member, and

the protruding portion protrudes from the side wall portion in a direction along the back surface of the first electro-optical member.

5. The display device according to claim 1 , wherein

the light shielding frame is a mirror-finished printing formed by applying a resin containing a silver pigment.

6. The display device according to claim 1 , wherein

the light shielding frame is a frame-shaped sheet of a resin containing a silver pigment.

7. A display device comprising:

an optical member that has translucency and has a back surface including a first region and a second region outside the first region;

a first electro-optical member that is disposed on the back surface side of the optical member, has an optical characteristic changed with voltage application, and has a back surface including a third region and a fourth region outside the third region;

a housing that is disposed on the back surface side of the optical member and outside the first electro-optical member;

a half mirror film that covers the third region; and

a light shielding frame that covers the second region,

wherein

when viewed from a direction perpendicular to a front surface of the optical member, the light shielding frame and the half mirror film have an overlapping portion that is stripe-shaped and a width of the overlapping portion is 0.5 mm or less, and

the first electro-optical member is provided between the light shielding frame and the half mirror film in the direction perpendicular to the front surface of the optical member.

8. The display device according to claim 7 , wherein

the light shielding frame is a mirror-finished printing formed by applying a resin containing a silver pigment.

9. The display device according to claim 7 , wherein

the light shielding frame is a frame-shaped sheet of a resin containing a silver pigment.

10. A display device comprising:

an optical member that has translucency and has a back surface including a first region and a second region outside the first region;

a first electro-optical member that is disposed on the back surface side of the optical member, has an optical characteristic changed with voltage application, and has a back surface including a third region and a fourth region outside the third region;

a housing that is disposed on the back surface side of the optical member and outside the first electro-optical member;

a half mirror film that covers the third region; and

a light shielding frame that covers the second region, wherein

when viewed from a direction perpendicular to a front surface of the optical member, the light shielding frame and the half mirror film have an overlapping portion that is stripe-shaped where the overlapping portion has a width that is 0.5 mm or less.

11. The display device according to claim 10 , wherein

the light shielding frame is a mirror-finished printing formed by applying a resin containing a silver pigment.

12. The display device according to claim 10 , wherein

the light shielding frame is a frame-shaped sheet of a resin containing a silver pigment.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2024
From: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
To: PANASONIC AUTOMOTIVE SYSTEMS CO., LTD.
Reel/Frame 066709/0752 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 4, 2023
From: INABA, YASUNOBU; MATSUMOTO, YUJI
To: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Reel/Frame 064490/0062 →
Priority Claims (1)
JP 2022-057057 · Mar 30, 2022 · national
Continuity (1)
Related Publication 20230314856A1 · Oct 5, 2023
References Cited (14)
US 9684204B2 · Sakai et al. · 2017 [cited by applicant]
US 10850667B2 · Baur · 2020 [cited by applicant]
US 11448911B2 · Izawa et al. · 2022 [cited by applicant]
US 20090086123A1 · Tsuji · 2009 [cited by examiner]
US 20160278201A1 · Cheon · 2016 [cited by examiner]
US 20190196256A1 · Kim · 2019 [cited by examiner]
US 20200319669A1 · Matsumoto · 2020 [cited by examiner]
US 20220163838A1 · Lin · 2022 [cited by examiner]
JP 2008203487A · 2008 [cited by examiner]
JP 2009109855 · 2009 [cited by applicant]
JP 2014211584 · 2014 [cited by applicant]
JP 202217759 · 2022 [cited by applicant]
WO WO2014112525 · 2014 [cited by applicant]
Office Action in Japanese patent application No. 2022-057057 issued Apr. 8, 2025, along with English translation thereof. [cited by applicant]