US 2016/0077649 A1 · DISPLAY PANEL WITH PRESSURE SENSOR AND ELECTRONIC DEVICE WITH PRESSING INPUT FUNCTION

Abstract

An electronic device with pressing input function has a substantially rectangular parallelepiped-shaped housing. A display panel with pressure sensor and an arithmetic circuit module are disposed in the housing. The display panel with pressure sensor is composed of a pressure sensor and a display panel. In the display panel, a front polarizing plate is disposed on a front face of a liquid crystal panel. In the pressure sensor, electrodes are formed on both respective flat plate faces of a piezoelectric film having birefringence. The pressure sensor is disposed between the liquid crystal panel and the front polarizing plate of the display panel, and a uniaxial drawing direction of the piezoelectric film is parallel to a polarizing direction of the front polarizing plate.

Claims19

Dependent claims

A display panel comprising:

an image forming panel configured to control light emitted to a front face side to form a displayed image;
a front polarizing plate disposed adjacent the front face side of the image forming panel;
and
a pressure sensor including a piezoelectric film formed of a chiral polymer, wherein
the pressure sensor is disposed relative to the image forming panel such that a first polarizing direction of the piezoelectric film is parallel to or orthogonal to a second polarizing direction of the front polarizing plate.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/931,947Filed 4 Nov 2015

Priority

JP 2013-11064627 May 2013

Published

17 Mar 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

G02B 5/3025
Polarising elements: polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
G02F 1/133528
Structural association of cells with optical devices, e.g. polarisers or reflectors: polarisers
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
G06F 3/0445
By capacitive means: using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Display panel with pressure sensor and electronic device with pressing input function

Life of this patent

Display panel with pressure sensor and electronic device with pressing input function

Life of this patent

Abstract

Claims19