Vehicle mounted display device

Patent metadata

Field	Value
Publication number	US-2018065881-A1
Application number	US-201715812618-A
Country	US
Kind code	A1
Filing date	Nov 14, 2017
Priority date	Jun 5, 2015
Publication date	Mar 8, 2018
Grant date	—

Abstract

The present invention relates to a vehicle-mounted display device disposed in an interior member of a vehicle. The vehicle-mounted display device of the invention includes: a display panel; a cover glass covering the display panel; a housing accommodating the display panel; and a holding portion holding a position of the housing, in which the cover glass is a tempered glass having a thickness being 0.5 to 2.5 mm, a thickness of a compressive stress layer being 650 MPa or higher, and when the thickness (unit: mm) of the cover glass is represented by x and an energy absorption rate (unit: %) of the holding portion is represented by y. Expression (1) is satisfied, and impact resistance of the cover glass is excellent:
y ≧−37.1 ×ln( x )+ 53.7   ( 1 )

First claim

1 . A vehicle-mounted display device that is disposed in an interior member of a vehicle, the vehicle-mounted display device comprising:
a display panel; a cover glass that covers the display panel; a housing that accommodates the display panel; and a holding portion that holds a position of the housing, wherein the cover glass is a tempered glass having a thickness being from 0.5 to 2.5 mm, a thickness of a compressive stress layer being 10 μm or more, and a surface compressive stress of the compressive stress layer being 65 MPa or higher, and when the thickness (unit: mm) of the cover glass is represented by x and an energy absorption rate (unit: %) of the holding portion is represented by y, the following Expression (1) is satisfied:
y≧− 37.1×ln( x )+53.7  (1).

2 . The vehicle-mounted display device according to claim 1 ,
wherein the holding portion comprises:
an impact absorbing portion that has impact absorbability and is disposed on a back surface side of the housing; and
a fixing portion that fixes the position of the housing.

3 . The vehicle-mounted display device according to claim 1 ,
wherein the cover glass is a soda-lime glass or an aluminosilicate glass.

4 . The vehicle-mounted display device according to claim 1 ,
wherein the cover glass comprises, indicated by mol %, from 50 to 80% of SiO 2 , from 1 to 20% of Al 2 O 3 , from 6 to 20% of Na 2 O, from 0 to 11% of K 2 O, from 0 to 15% of MgO, from 0 to 6% of CaO, and from 0 to 5% of ZrO 2 .

5 . The vehicle-mounted display device according to claim 2 ,
wherein the impact absorbing portion is a cushioning material, a honeycomb mechanism, a rotation mechanism, or a sliding mechanism.

6 . The vehicle-mounted display device according to claim 2 ,
wherein a material of the fixing portion is a metal.

7 . The vehicle-mounted display device according to claim 2 ,
wherein the fixing portion has an L-shape or a corrugated L-shape in cross-section.

8 . The vehicle-mounted display device according to claim 2 ,
wherein the fixing portion and the housing are joined through a bolt.

9 . The vehicle-mounted display device according to claim 1 , comprising a light shielding portion formed on a peripheral portion of the cover glass.

10 . The vehicle-mounted display device according to claim 1 ,
wherein the display panel and the cover glass are bonded to each other through an adhesive layer.

11 . The vehicle-mounted display device according to claim 10 ,
wherein the adhesive layer has a thickness of from 5 to 400 μm.

12 . The vehicle-mounted display device according to claim 10 ,
wherein the adhesive layer has a storage shear modulus of from 5 kPa to 5 MPa.

13 . The vehicle-mounted display device according to claim 1 ,
wherein the cover glass is bonded to a top surface of a housing frame of the housing through a double-sided tape.

14 . The vehicle-mounted display device according to claim 1 ,
wherein the display panel is a liquid crystal panel, an organic EL panel, a PDP, or an electronic ink panel.

15 . The vehicle-mounted display device according to claim 1 , which is an embedded type or a standing type.

Assignees

• Asahi Glass Co Ltd

Inventors

• Hashimoto Kyohei
• Inoue Atsushi
• Inoue Yasuhiro
• Kato Yasumasa
• Fukasawa Yasuji
• Kobayashi Yusuke
• Konishi Masaaki

Classifications

• G02F2201/503

  Arrangements improving the resistance to shock · CPC title

• B32B7/12 Primary

  using interposed adhesives or interposed materials with bonding properties · CPC title

• G02F1/133308 Primary

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• B32B17/06

  comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} · CPC title

• C03C3/076

  with 40% to 90% silica, by weight {(C03C3/045 takes precedence)} · CPC title