WO2006011695A1 - Method for making electrode terminal of panel using polymer and liquid crystal compound - Google Patents

Method for making electrode terminal of panel using polymer and liquid crystal compound Download PDF

Info

Publication number
WO2006011695A1
WO2006011695A1 PCT/KR2004/001920 KR2004001920W WO2006011695A1 WO 2006011695 A1 WO2006011695 A1 WO 2006011695A1 KR 2004001920 W KR2004001920 W KR 2004001920W WO 2006011695 A1 WO2006011695 A1 WO 2006011695A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
polymer
electrode terminals
crystal compound
panel
Prior art date
Application number
PCT/KR2004/001920
Other languages
French (fr)
Inventor
Si-Han Kim
Original Assignee
Si-Han Kim
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Si-Han Kim filed Critical Si-Han Kim
Priority to PCT/KR2004/001920 priority Critical patent/WO2006011695A1/en
Publication of WO2006011695A1 publication Critical patent/WO2006011695A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133365—Cells in which the active layer comprises a liquid crystalline polymer
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film

Definitions

  • the present invention relates to a method for making electrode terminals of
  • the polymer and liquid crystal compound is used for solving the problems of
  • the conventional liquid crystal display device by multiple free technology, such as
  • liquid crystal compound displays information image on a panel by scattering or
  • Such use modes with the polymer and liquid crystal includes PDLC (Polymer
  • the manufacture of the panels using the polymer- and liquid crystal may be more
  • the panel using the polymer and liquid crystal is prepared by
  • conductive films being formed upper and lower electrodes by coating ITO on the
  • the panel using the polymer and liquid crystal compound is further processed
  • a conductive material such as a silver paste or a
  • electrodes may get damages during the removing the polymer and liquid crystal
  • the panel can not be use and is discarded.
  • liquid crystal compound improved to compensate the possible damages of the
  • the present invention provides a method for making
  • the method further comprises the steps of: removing a
  • the portion to be removed being 1.1 - 10 times wider than the area of the
  • FIG. 1 is a sectional view for explanation the method for making electrode
  • Figure 1 sequentially shows a method for making electrode terminals of a
  • upper and lower substrates 1 and 3 are made of a
  • plastic film such as PET, PC, acrylate or polyamide.
  • the upper and lower substrates 1 and 3 of the plastic film may be a circular
  • the polymer and liquid crystal compound 9 is coated on a surface of at least
  • liquid crystal compound may have a type of PDLC, PALC or PNLC.
  • the upper and lower conductive films are applied with a sealant in a desired
  • the panel P using the polymer and liquid crystal compound is formed with a
  • the exposed electrode terminal 7a is coated with a conductive material 11 for
  • the ohmic resistance to the signal from the driving circuit may
  • a silver paste or a copper tape is preferably used as the conductive material
  • the electrode terminals may be lowered, thereby improving the photoelectrical

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Dispersion Chemistry (AREA)

Abstract

The present invention is directed to a method for making electrode terminals of panels using a polymer and liquid crystal compound, for preventing any damage or short between electrodes. The method in accordance with the present invention comprises removing a portion of the conductive films on the upper and lower substrates to form electrode terminals, the portion to be removed being 1.1 - 10 times wider than the area of the electrode terminals to be exposed, exposing the electrode terminals by removing the remained polymer and liquid crystal compound over the conductive films in the area corresponding to the electrode terminal, and coating conductive material on the exposed electrode terminals for compensation.

Description

METHOD FOR MAKING ELECTRODE TERMINAL OF PANEL USING POLYMER
AND LIQUID CRYSTAL COMPOUND
TECHNICAL FIELD
The present invention relates to a method for making electrode terminals of
panels of a display device, and more particularly to a method for forming electrode
terminals of the panels using a polymer and liquid crystal compound for current
transfer on a conductive film in which upper and lower electrodes are coated to
prevent a damage and a short between the electrodes.
BACKGROUND OF THE INVENTION
The polymer and liquid crystal compound is used for solving the problems of
the conventional liquid crystal display device by multiple free technology, such as
rubbing free, a polarizing plate free, a back light free and a substrate free. The
polymer and liquid crystal compound is formed on the basis of the polymer and the
droplets of the liquid crystal are dispersed and combined therein. The polymer and
liquid crystal compound displays information image on a panel by scattering or
absorbing a light in response to the applied voltage.
Such use modes with the polymer and liquid crystal includes PDLC (Polymer
Dispersed Liquid Crystal), PALC (Polymer Assembled Liquid Crystal) and PNLC
(Polymer Network Liquid Crystal). Recently, the liquid crystal panels use a plastic film as an upper and lower
substrates for a super-slimmed structure and lightening weight thereof. Furthermore,
the manufacture of the panels using the polymer- and liquid crystal may be more
simplified since the rubbing process and a polarizing plate are not needed.
For example, the panel using the polymer and liquid crystal is prepared by
forming upper and lower substrates by using a plastic film such as, PET
(polyethylene terephthalate), PC (polycarbonate), acrylate and polyamide, forming
conductive films being formed upper and lower electrodes by coating ITO on the
upper and lower substrates, coating the polymer and liquid crystal compound on one
side of the conductive films, applying a sealant in a predetermined size on an upper
and lower conductive films, assembling and the upper and lower conductive films
integrally and curing them, and cutting the assembly in a predetermined size to
produce a panel using the polymer and liquid crystal compound.
The panel using the polymer and liquid crystal compound is further processed
to expose electrode terminals by cutting off a corresponding portion of the cured
polymer and liquid crystal for transferring a current from the driving circuit to the
upper and lower electrodes, and a conductive material such as a silver paste or a
copper tape is applied to exposed upper and lower electrode terminals and finally
wires are connected thereto.
However, the conventional method for manufacturing the electrode terminals
of the panel using the polymer and liquid crystal compound had a problem that the
electrodes may get damages during the removing the polymer and liquid crystal
compound coated on the upper and lower substrates, whereby the current can not be applied thereto. In this case the panel can not be use and is discarded.
For solving such problem, it was proposed to apply a conductive material for
compensation to the region that the electrode terminals are formed. In this case,
other problem of short by contacting the counter electrode with the applied
conductive material is occurred.
DISCLOSURE OF INVENTION
The object of the present invention is to solve the problems of the prior art and
to provide a method for making electrode terminals of panels using a polymer and
liquid crystal compound improved to compensate the possible damages of the
electrodes and to prevent a short between the upper and lower electrodes.
To accomplish the object, the present invention provides a method for making
electrode terminals of panels using the polymer and liquid crystal compound, which
comprises forming upper and lower electrodes on upper and lower substrates made
of a plastic film by coating a conductive metal or metal oxide thereby forming
conductive films; coating a polymer and liquid crystal compound on one side of the
conductive films, applying sealant in a predetermined size thereon, assembling the
upper and lower substrates integrally to form a panel, and cutting the panel in a
predetermined size; wherein the method further comprises the steps of: removing a
portion of the conductive films on the upper and lower substrates to form electrode
terminals, the portion to be removed being 1.1 - 10 times wider than the area of the
electrode terminals to be exposed, exposing the electrode terminals by removing the
remained polymer and liquid crystal compound over the conductive films in the area corresponding to the electrode terminal; and coating conductive material on the
exposed electrode terminals for compensation.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a sectional view for explanation the method for making electrode
terminals of the panel using the polymer and liquid crystal compound according to the
invention.
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention will be described more in
detail hereinafter.
Figure 1 sequentially shows a method for making electrode terminals of a
panel using a polymer and liquid crystal compound for a display device.
As shown in the drawing, upper and lower substrates 1 and 3 are made of a
plastic film such as PET, PC, acrylate or polyamide.
The upper and lower substrates 1 and 3 of the plastic film may be a circular
plate, which is coated with a metal thin layer or metal oxide such as ITO to form
upper and lower electrodes 5 and 7, thereby making a conductive film.
The polymer and liquid crystal compound 9 is coated on a surface of at least
of one of the upper and lower conductive films. The mode using the polymer and
liquid crystal compound may have a type of PDLC, PALC or PNLC.
The upper and lower conductive films are applied with a sealant in a desired
size and are integrally assembled and cured, such assembled circular plate type panel is further cut in a desired size, thereby producing a panel P using a polymer
and liquid crystal compound as the first step shown in figure 1.
The panel P using the polymer and liquid crystal compound is formed with a
electrode terminal for applying current from a driving circuit, which is improved to
prevent a short or a damage as in the prior art.
For this purpose, one side (right side in figure 1 ) of the upper conductive film
of the panel in the first step of the figure 1 is removed, and one side (left side in figure
1 ) of the lower conductive film is removed. Particularly, the removed portion of the
upper and lower conductive films 1 and 3, respectively is 1.1 - 10 times wider
than desired electrode terminal 7a, thereby producing the panel P in the second
step.
In the third step, the cured polymer and liquid crystal compounds 9 remained
at the upper and lower conductive films in the panel P are further removed so that the
electrode terminal is exposed. At this time, the cured polymer and liquid crystal
compounds 9 are removed as the same area as that of the electrode terminal,
thereby forming a electrode terminal 7a in accordance with the present invention.
The exposed electrode terminal 7a is coated with a conductive material 11 for
compensation of the electrode terminal which may be damaged in the panel P using
the polymer and liquid crystal compound, thereby forming a pad, and the panel using
the polymer and liquid crystal compound according to the present invention is
completed.
Due to the pad, the ohmic resistance to the signal from the driving circuit may
be lowered and the connection of wires may be easily made. A silver paste or a copper tape is preferably used as the conductive material
11 in accordance with the present invention, but other proper conductive materials
possible to be coated may be used.
Industrial Applicability
As described above, it is easily understood that the problems in the prior art
are solved by making electrode terminals of a panel using the polymer and liquid
crystal compound in accordance with the method of the present invention.
That is, the damage of the electrodes or short between the upper and lower
electrodes is prevented by removing the polymer and liquid crystal compound in the
conductive film wider than the area for the desired electrode terminals and then
further applying the conductive materials on the corresponding electrode terminals as
a compensation for any damage of the electrode terminals.
Furthermore, in accordance with the present invention, the ohmic resistance in
the electrode terminals may be lowered, thereby improving the photoelectrical
characteristics of the panel.

Claims

CLAIM
1. A method for making electrode terminals. of panels using the polymer and
liquid crystal compound, which comprises forming upper and lower electrodes on
5 upper and lower substrates made of a plastic film by coating a conductive metal or
metal oxide, thereby forming conductive films; coating a polymer and liquid crystal
compound on one side of the conductive films, applying sealant in a predetermined
size thereon, assembling the upper and lower substrates integrally to form a panel,
and cutting the panel in a predetermined size; wherein the method further comprises
o the steps of:
removing a portion of the conductive films on the upper and lower substrates
to form electrode terminals, the portion to be removed being 1.1 - 10 times wider than
the area of the electrode terminals to be exposed;
exposing the electrode terminals by removing the remained polymer and
5 liquid crystal compound over the conductive films in the area corresponding to the
electrode terminal; and
coating conductive material on the exposed electrode terminals for
compensation.
PCT/KR2004/001920 2004-07-30 2004-07-30 Method for making electrode terminal of panel using polymer and liquid crystal compound WO2006011695A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2004/001920 WO2006011695A1 (en) 2004-07-30 2004-07-30 Method for making electrode terminal of panel using polymer and liquid crystal compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2004/001920 WO2006011695A1 (en) 2004-07-30 2004-07-30 Method for making electrode terminal of panel using polymer and liquid crystal compound

Publications (1)

Publication Number Publication Date
WO2006011695A1 true WO2006011695A1 (en) 2006-02-02

Family

ID=35786415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/001920 WO2006011695A1 (en) 2004-07-30 2004-07-30 Method for making electrode terminal of panel using polymer and liquid crystal compound

Country Status (1)

Country Link
WO (1) WO2006011695A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8089604B2 (en) 2007-06-26 2012-01-03 3M Innovative Properties Company Liquid crystal display panel and methods of manufacturing the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023833A (en) * 1983-07-19 1985-02-06 Seiko Instr & Electronics Ltd Matrix type multicolor display device
JPS60263120A (en) * 1984-06-12 1985-12-26 Seiko Epson Corp Liquid crystal display body
JPH0667141A (en) * 1992-08-21 1994-03-11 Hitachi Ltd Picture recorder
JPH08194212A (en) * 1995-01-17 1996-07-30 Nippondenso Co Ltd Liquid crystal display element
JP2000162638A (en) * 1998-11-26 2000-06-16 Nec Corp Liquid crystal display device and its manufacture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023833A (en) * 1983-07-19 1985-02-06 Seiko Instr & Electronics Ltd Matrix type multicolor display device
JPS60263120A (en) * 1984-06-12 1985-12-26 Seiko Epson Corp Liquid crystal display body
JPH0667141A (en) * 1992-08-21 1994-03-11 Hitachi Ltd Picture recorder
JPH08194212A (en) * 1995-01-17 1996-07-30 Nippondenso Co Ltd Liquid crystal display element
JP2000162638A (en) * 1998-11-26 2000-06-16 Nec Corp Liquid crystal display device and its manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8089604B2 (en) 2007-06-26 2012-01-03 3M Innovative Properties Company Liquid crystal display panel and methods of manufacturing the same

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