Electronic board

Patent metadata

Field	Value
Publication number	US-2016306452-A1
Application number	US-201515102096-A
Country	US
Kind code	A1
Filing date	Feb 17, 2015
Priority date	Feb 21, 2014
Publication date	Oct 20, 2016
Grant date	—

Abstract

The present invention relates to an electronic board comprising a display panel; a polarizing plate disposed on the display panel, and including a polarizer and a high hardness plastic film integrated with each other; and a touch sensor recognizing input information through the contact of a user.

First claim

1 . An electronic board comprising:
a display panel; a polarizing plate disposed on the display panel, and including a polarizer and a high hardness plastic film integrated with each other; and a touch sensor recognizing input information through a contact of a user.

2 . The electronic board according to claim 1 , wherein the high hardness plastic film is disposed at an uppermost part of the electronic board.

3 . The electronic board according to claim 1 , wherein the high hardness plastic film has elastic modulus of 2000 MPa or more, as measured by ASTM D882.

4 . The electronic board according to claim 1 , wherein the high hardness plastic film is a substrate-free single layer film.

5 . The electronic board according to claim 1 , wherein the high hardness plastic film comprises:
a supporting substrate; a first coating layer formed on a lower side of the supporting substrate, and having a first elastic modulus; and a second coating layer formed on the upper side of the supporting substrate, and having a second elastic modulus.

6 . The electronic board according to claim 5 , wherein the first elastic modulus is 1500 MPa or less, as measured by ASTM D882, and
the second elastic modulus is 2000 MPa or more, as measured by ASTM D882.

7 . The electronic board according to claim 5 , wherein the first coating layer and the second coating layer are independently identically or differently formed by curing a coating composition comprising:
a binder comprising: tri- to hexafunctional acrylate; at least one selected from the group consisting of mono- to difunctional acrylate, photocurable elastomer, and amphipathic block copolymer; and a photoinitiator.

8 . (canceled)

9 . (canceled)

10 . The electronic board according to claim 5 , wherein the supporting substrate is a film inducing circular polarization or depolarization.

11 . The electronic board according to claim 1 , wherein the polarizing plate has pencil hardness of 7H or more under 1 kg load.

12 . The electronic board according to claim 1 , wherein the polarizing plate further comprises:
a second adhesive layer formed on a lower side of the polarizer; and an isotropic or anisotropic polymer film attached to the second adhesive layer.

13 . (canceled)

14 . The electronic board according to claim 1 , wherein the touch sensor is a capacitive, resistive, or optical touch sensor.

15 . (canceled)

16 . (canceled)

17 . The electronic board according to claim 1 , wherein the touch sensor is disposed on an upper part or lower part of the polarizing plate.

18 . The electronic board according to claim 1 , wherein the touch sensor comprises a conductive layer on at least one side thereof.

19 . The electronic board according to claim 1 , further comprising:
a second adhesive layer formed on a lower side of the polarizer; and an optical functional layer attached to the second adhesive layer.

20 . The electronic board according to claim 19 , wherein the optical functional layer comprises at least one transparent polymer film, liquid crystal film or a combination thereof.

21 . The electronic board according to claim 20 , wherein the transparent polymer film is at least one selected from the group consisting of a cellulose based film, an acryl based film, a cycloolefin based film, a polyester based film, and a polycarbonate based film.

22 . The electronic board according to claim 20 , wherein the transparent polymer film is a protection film or a compensation film.

23 . The electronic board according to claim 22 , wherein the compensation film is ±A film, ±B film, ±C film or a combination thereof.

24 . The electronic board according to claim 23 , wherein the display panel is an IPS-LCD panel, and
the compensation film is a laminate of −B film and +C film.

25 . The electronic board according to claim 23 , wherein the display panel is a VA-LCD panel, and
the compensation film is a laminate of −B film or +A film and +C film.

26 . (canceled)

Assignees

• Lg Chemical Ltd

Inventors

• Jung Soon Hwa
• Hong Kyung Ki
• Chang Yeong Rae
• Park Jin Young
• Kang Joon Koo
• Jeong Hyeok
• Her Eun Kyu

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G02F1/13363

  Birefringent elements, e.g. for optical compensation · CPC title

• G02F2201/50

  Protective arrangements · CPC title

• G02F1/133528

  Polarisers · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title