IP Library Granted Patent US 11,150,756
Granted Patent B2
US 11,150,756 · App. 16/864,222 · Granted Oct 19, 2021

Liquid crystal display device

Inventor: Eiji Oohira (Mobara, JP)
Assignees: Japan Display Inc.; Panasonic Liquid Crystal Display Co., Ltd.
G06F3/0412B32B7/12G02F1/13338G06F3/041H04B1/3888H04M1/0266B32B2307/412B32B2457/202B32B2457/208G02F1/133374G06F2203/04103
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Quick Facts
Patent No.
US 11,150,756
App. No.
16/864,222
Granted
Oct 19, 2021
Kind
B2
Abstract

A mobile phone is provided which includes a liquid crystal display device in which a front window and a touch panel are bonded together with an adhesive sheet, wherein a logo having plural layers is formed on a back side of the front window. A touch-panel flexible wiring substrate is mounted to the touch panel, A plane distance between an end portion of the plural layers of the logo and an end portion of the touch panel is set to greater than zero. With this configuration, it is possible to prevent a peeling stress on the adhesive sheet, even if a thickness of the adhesive sheet is smaller than the sum of a thickness of the touch-panel flexible wiring substrate and a thickness of the logo.

Claims (19)

1. A mobile phone comprising:

a front window including a logo;

a touch panel element bonded to the front window, and

a display panel;

wherein the touch panel element and the front window are bonded together with an adhesive material,

wherein a flexible wiring substrate is connected to one side of the touch panel element,

wherein the logo is formed on an inner surface of the front window,

wherein the logo is formed by two layers including a first layer and a second layer,

wherein the inner surface of the front window has a first portion and a second portion, the second portion opposes to the touch panel element via the adhesive material,

the logo is formed in the first portion of the inner surface of the front window,

the first layer overlaps a part of the second layer,

wherein a distance, in a planar view, between an end portion of the second layer of the logo and an end portion of the touch panel element is greater than zero,

wherein the first layer does not overlap the touch panel element in a planar view,

wherein the first layer has an opening to display the logo, the second layer fills the opening, and

wherein a color of the first layer is different from a color of the second layer.

2. The mobile phone according to claim 1 ,

wherein, when a thickness of the adhesive material is d 1 , a thickness of the portion of the plurality of layers of the logo is d 2 , and a thickness of the flexible wiring substrate is d 3 , a relationship d 1 <d 2 +d 3 is satisfied.

3. The mobile phone according to claim 1 ,

wherein a distance, in a planar view, between an end portion of the two layers of the logo and an end portion of the touch panel element is greater than 0.3 mm.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 27, 2024
From: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA; JAPAN DISPLAY INC.
To: PANELTOUCH TECHNOLOGIES LLC
Reel/Frame 067245/0560 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 17, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 065615/0327 →
Priority Claims (1)
JP 2009-107678 · Apr 27, 2009 · national
Continuity (6)
Continuation 16114392 · Aug 28, 2018
Continuation 15493239 · Apr 21, 2017
Continuation 14954094 · Nov 30, 2015
Continuation 14068060 · Oct 31, 2013
Continuation 12763450 · Apr 20, 2010
Related Publication 20200257398A1 · Aug 13, 2020