KR20120045770A - Resistive type touch screen - Google Patents

Resistive type touch screen Download PDF

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Publication number
KR20120045770A
KR20120045770A KR1020100107554A KR20100107554A KR20120045770A KR 20120045770 A KR20120045770 A KR 20120045770A KR 1020100107554 A KR1020100107554 A KR 1020100107554A KR 20100107554 A KR20100107554 A KR 20100107554A KR 20120045770 A KR20120045770 A KR 20120045770A
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KR
South Korea
Prior art keywords
touch screen
electrode pattern
substrate
piezoelectric layer
resistive touch
Prior art date
Application number
KR1020100107554A
Other languages
Korean (ko)
Inventor
김운천
김현준
오용수
이종영
Original Assignee
삼성전기주식회사
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 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR1020100107554A priority Critical patent/KR20120045770A/en
Publication of KR20120045770A publication Critical patent/KR20120045770A/en

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    • 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
    • G02F1/13338—Input devices, e.g. touch 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04113—Peripheral electrode pattern in resistive digitisers, i.e. electrodes at the periphery of the resistive sheet are shaped in patterns enhancing linearity of induced field

Abstract

PURPOSE: A resistive touch screen is provided to have a piezoelectric layer, thereby a voltage used by external pressure as power of the touch screen. CONSTITUTION: A lower substrate includes a lower electrode pattern unit(130) and a lower electrode wiring unit(135). The lower electrode pattern unit is made of a lower piezoelectric layer(120) and a conductive nano wire. An upper substrate is arranged on the lower substrate. The upper substrate includes an upper electrode pattern unit(160) and an upper electrode wiring unit(165). The upper electrode pattern unit is made of an upper piezoelectric layer(150) and the conductive nano wire. A spacer is arranged between the upper and lower substrates. The spacer has an opening. The upper and lower piezoelectric layers are made of PVDF(Polyvinylidenefluoride) or PVDF derivatives.

Description

Resistive Touch Screen {Resistive Type Touch Screen}

The present invention relates to a resistive touch screen.

With the development of mobile communication technology, terminals such as mobile phones, PDAs, and navigations have expanded their functions to more diverse and complex media providing means such as audio, video, wireless internet web browsers, etc. have. Recently, since a larger display screen is required to be implemented within a limited size of a terminal, a display method using a touch screen is receiving more attention. Such a touch screen has an advantage of saving space compared to a conventional key input method by integrating a screen and coordinate input means.

There are two types of touch screens that are currently employed.

First, in the capacitive touch screen, an upper substrate on which a first electrode pattern having a first direction is formed and a lower substrate on which a second electrode pattern having a second direction is formed are spaced apart from each other, and the first electrode pattern and the second electrode pattern are separated from each other. Insulators are inserted to prevent contact.

The capacitive touch screen calculates the coordinates of the contact point by measuring a change in capacitance generated in the first electrode pattern and the second electrode pattern as the input means contacts the touch screen.

The resistive touch screen has a form in which the upper substrate on which the upper resistive film is formed and the lower substrate on which the lower resistive film is formed are spaced apart by spacers and are in contact with each other by external pressure. When the upper substrate on which the upper resistive film is formed is pressed by an input means such as a finger or a pen, the upper / lower resistive film is energized, and the controller recognizes the contact coordinates by recognizing the voltage change according to the resistance value change at the position. .

In the resistive touch screen, an opening is formed inside the spacer to form an air gap G between the upper and lower resistive layers.

The touch screens of the above-described method have different operating principles, but in general, since the strength of the external pressure at the contact point cannot be detected, three-dimensional coordinate information cannot be obtained.

In addition, since a conventional touch screen requires an external power source to drive the touch screen in mounting to a portable terminal, the configuration between the touch screen and the portable terminal is complicated, and consumes the power of the portable terminal, thereby providing portability of the portable terminal. There was a problem falling.

The present invention was devised to solve the above problems, and generates a voltage according to the external pressure to provide power to the touch screen, and by measuring the intensity of the voltage to calculate the strength of the external pressure, Z as well as two-dimensional coordinate information. We propose a resistive touch screen that can acquire coordinate information of a direction.

The present invention relates to a resistive touch screen, and includes a lower piezoelectric layer, a lower electrode formed on the lower piezoelectric layer, and a lower electrode pattern portion formed of conductive nanowires and a lower electrode wiring portion connected to the lower electrode pattern portion, wherein the lower substrate is formed. An upper substrate and a lower substrate disposed on an upper side of the substrate and having an upper piezoelectric layer formed on an opposing surface, an upper electrode pattern portion formed on the upper piezoelectric layer, and an upper electrode wiring portion connected to the upper electrode pattern portion; A spacer disposed between the substrate and the upper substrate and having an opening formed therein.

In addition, the piezoelectric layer of the present invention is characterized by consisting of PVDF derivatives including PVDF (Polyvinylidenefluoride) or PVDF-TRFE.

In addition, the conductive nanowires of the present invention is characterized in that composed of any one of carbon nanowires or silver nanowires.

In addition, the spacer of the present invention is characterized by consisting of a double-sided adhesive sheet.

In addition, the present invention is characterized in that it further comprises a window coupled to the upper substrate.

The lower electrode pattern portion may include a plurality of lower electrode patterns extending in a first direction, the plurality of lower electrode patterns are arranged in a second direction, and the upper electrode pattern portion is arranged in a second direction. A plurality of upper electrode patterns having an extended shape, wherein the plurality of upper electrode patterns are arranged in a first direction.

In addition, the present invention is characterized in that the conductive nanowires of the lower electrode pattern portion has a second direction, and the conductive nanowires of the upper electrode pattern portion have a first direction.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best describe their own invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

The resistive touch screen according to the present invention may be used as a power source for the touch screen by using a voltage generated by an external voltage even without using an external power source including a piezoelectric layer.

Also, by measuring the intensity of the voltage generated in the piezoelectric layer, coordinate information in the Z direction (direction perpendicular to the piezoelectric layer) can be obtained.

Further, by configuring the electrode pattern portion through the conductive nanowire having excellent conductivity, accurate coordinate information can be obtained even at a low voltage.

1 is a cross-sectional view schematically showing a resistive touch screen according to a preferred embodiment of the present invention.
FIG. 2 is an exploded perspective view illustrating the configuration of the resistive touch screen employed in FIG. 1.
3 is a cross-sectional view schematically showing a resistive touch screen according to another preferred embodiment of the present invention.
FIG. 4 is a plan view illustrating a lower substrate included in the resistive touch screen illustrated in FIG. 3.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

1 is a cross-sectional view schematically illustrating a resistive touch screen according to a preferred embodiment of the present invention, and FIG. 2 is an exploded perspective view illustrating a configuration of a resistive touch screen employed in FIG. 1. Hereinafter, the resistive touch screen (hereinafter, referred to as a touch screen) according to the present embodiment will be described with reference to this.

In the resistive touch screen 100 (hereinafter, referred to as a touch screen) according to the present embodiment, as shown in FIGS. 1 and 2, electrode pattern parts 130 and 160 are formed on the piezoelectric layers 120 and 150, and electrodes Two substrates on which the electrode wiring parts 135 and 165 connected to the pattern parts 130 and 160 are formed are spaced apart by the spacer 170.

1 and 2 exemplarily illustrate an analog resistive touch screen. In this touch screen 100, electrode pattern portions 130 and 160 having a film shape are formed in an active region through which an image passes, and an active region In the inactive region surrounding the electrode wiring portions 135 and 165 formed of two electrode wirings are formed on the lower substrate 110 and the upper substrate 140.

The lower substrate 110 and the upper substrate 140 may use a film substrate as a transparent member, among which the film substrate is polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polypropylene (PP), polyethylene (PE), polyethylene naphthalenedicarboxylate (PEN), polycarbonate (PC), polyether sulfone (PES), polyimide (PI), polyvinyl alcohol (PVA), cyclic olefin copolymer (COC), styrene It may be composed of a polymer, polyethylene, polypropylene, and the like, and is not particularly limited.

The upper substrate 140 is generally a polyethylene terephthalate (PET) is adopted, the lower substrate 110 may be a glass substrate if necessary.

In addition, piezoelectric layers 120 and 150 are formed on the upper substrate 140 and the lower substrate 110 to generate a voltage by an external pressure.

When the piezoelectric layers 120 and 150 are compressed by an external pressure, a voltage due to a proportional or constant function of the external pressure is generated in the thickness direction. The voltage generated in the piezoelectric layer is used as a power source for driving the touch screen, and the generated voltage varies according to the strength of the external pressure, so that the coordinate information in the Z direction (the strength of the external pressure) is obtained by measuring the voltage intensity. .

In the present invention, since the voltage generated in the piezoelectric layers 120 and 150 is used as a power source, a separate external power source is not required, so the configuration and control of the touch screen are simple, and the touch screen according to the present invention is mounted on a portable terminal. In this case, the portability of the portable terminal is improved.

At this time, the piezoelectric layers 120 and 150 are made of a material that generates a voltage by an external pressure, but is preferably disposed in an active region through which an image passes, thereby ensuring transparency. Therefore, it is preferred to be composed of PVDF (Polyvinylidenefluoride) or PVDF derivative. In particular, among the PVDF derivatives, PVDF-TrFE (vinylidenefluoride-trifluoroethylene copolymer) is most preferable in terms of transparency.

The electrode pattern portions 130 and 160 formed on the upper surface of the lower substrate 110 and the lower surface of the upper substrate 140 are formed to face each other. In this case, the electrode pattern parts 130 and 160 are made of conductive nanowires.

Conductive nanowires are nanowires made of conductive metals, metal alloys, plated metals, or metal oxides. Suitable metal nanowires include, but are not limited to, silver nanowires, gold nanowires, copper nanowires, nickel nanowires, gold plated silver nanowires, platinum nanowires, and palladium nanowires. It can be a wire.

Conductive nanowires have an advantage of excellent conductivity compared to common conductive materials. Accordingly, even if the intensity of the voltage generated in the piezoelectric layers 120 and 150 is low, the voltage change can be measured to calculate coordinate information of the contact point.

In particular, it is more preferable to employ silver nanowires or carbon nanowires which are excellent in conductivity and capable of securing transparency.

Electrode wiring portions 135 and 165 connected to the electrode pattern portions 130 and 160 having a film shape are formed in the inactive regions of the lower substrate 110 and the upper substrate 140. The electrode wiring parts 135 and 166 are made of a metal having low resistance (particularly, silver paste), and the lower electrode wiring part 135 and the upper electrode wiring part 165 have directions that cross each other. As shown in FIGS. 1 and 2, in the case of a 4-wire touch screen, the lower electrode wiring part 135 is energized at both sides of the lower electrode pattern part 130, and the upper electrode wiring part 165 is the lower electrode wiring part. The upper electrode pattern part 160 is energized in a direction crossing the 135, and transmits a voltage change due to external contact to the controller.

In the touch screen 100 according to the present invention, the electrode pattern parts 130 and 160 are contacted by external pressure, and the piezoelectric layers 120 and 150 are compressed to generate a voltage, and are generated in the piezoelectric layers 120 and 150. The voltage is transmitted to the electrode wiring units 135 and 165 through the electrode pattern units 130 and 160. Two-dimensional coordinate information is obtained by using a voltage ratio obtained by the pair of lower electrode wiring units 135 and a voltage ratio obtained by the pair of upper electrode wiring units 165.

The coordinate information in the Z direction is calculated by measuring the intensity of the voltage acquired by the lower electrode wiring unit 135 or the upper electrode wiring unit 165. As shown in FIGS. 1 and 2, the piezoelectric layers 120 and 150 generate a voltage according to a proportional or constant function of the external pressure, and thus use the strength of the voltage as the coordinate information in the Z direction, thereby requiring the portable terminal. Will be performed.

The spacer 170 has a shape in which an opening is formed so that the upper substrate 140 may be bent due to an external pressure so that the upper electrode pattern portion 160 may contact the lower electrode pattern portion 130. The spacer 170 may be formed of a plastic resin and then combined with the upper substrate 140 and the lower substrate 110 using a separate adhesive, but is preferably composed of a double-sided adhesive sheet in consideration of ease of manufacture. Do.

1 and 2, a dot spacer made of an insulating synthetic resin such as epoxy or acrylic resin may be formed on the electrode pattern parts 130 and 160 to prevent malfunction of the touch screen. have.

In addition, the touch screen 100 according to the present invention may further include a window 180 formed on an upper side of the upper substrate 140 as shown in FIGS. 1 and 2.

The window 180 protects the touch screen 100 and provides a contact surface to which the input means contacts. The window 180 is excellent in durability, and a film substrate (particularly, polymethyl methacrylate (PMMA), polycarbonate (PC)) or glass substrate (particularly, tempered glass) having good transparency may be employed. The window 180 is coupled to the upper substrate 140 of the resistive touch screen by a transparent adhesive A such as OCA.

Although not shown in FIGS. 1 and 2, a shielding film may be formed in an outer region of the upper or lower surface of the window 180. When the electrode wirings 135 and 165 are made of a metal such as silver paste, the electrode wirings 135 and 165 may be recognized from the outside. The shielding film may be formed by printing, for example, low brightness ink such as a black ink on an outer region of the window 180.

3 is a cross-sectional view schematically showing a resistive touch screen according to another preferred embodiment of the present invention, and FIG. 4 is a plan view showing a lower substrate included in the resistive touch screen shown in FIG. 3. Hereinafter, a touch screen according to the present embodiment will be described, but detailed description of the same configuration as that described with reference to FIGS. 1 and 2 will be omitted.

The touch screen 100 ′ according to the present embodiment may be configured as a digital resistive touch screen. The digital resistive touch screen includes a plurality of patterned electrode patterns, unlike the analog resistive touch screen including the electrode pattern portions 130 ′ and 160 ′ having a film shape, and thus the number of electrode wirings increases.

The lower electrode pattern portion 130 ′ includes a plurality of lower electrode patterns extending in a first direction, the plurality of lower electrode patterns are arranged in a second direction, and the upper electrode pattern portion 160 ′ is formed in a second direction. And a plurality of upper electrode patterns extending in a direction, wherein the plurality of upper electrode patterns are arranged in the first direction.

In this case, the first direction may be an X direction, a Y direction, or a diagonal direction, and the second direction is defined as a direction crossing the first direction. In particular, it is more preferable that the first direction and the second direction have orthogonality. Meanwhile, although the electrode wiring 135 ′ is connected to both ends of the electrode pattern part 130 ′ in FIG. 4, the electrode wiring 135 ′ may be connected to only one end as necessary.

The digital resistive touch screen 100 ′ has an advantage of obtaining coordinate information by measuring a voltage change in each of the electrode patterns when a plurality of touch points including a plurality of electrode patterns are touched.

Each electrode pattern has unique coordinate information, and since voltage is concentrated on an electrode pattern adjacent to the compressed portions of the piezoelectric layers 120 and 150, it is easy to calculate coordinate information of a contact point, and reliability of coordinate information is improved. Is improved. Since the coordinate information calculation method of the digital resistive touch screen is a well-known technology, detailed description thereof will be omitted.

In this case, as shown in FIG. 4, the directionality of the conductive nanowires preferably corresponds to the directionality of the electrode patterns constituting the electrode pattern parts 130 ′ and 160 ′. Since the current tends to flow along the direction of the conductive nanowires, the direction of the electrode pattern and the directivity of the conductive nanowires correspond to the voltage generated in the piezoelectric layers 120 and 150 to correspond to the electrode wirings 135 ′ and 165. ') Is easier to pass on. Therefore, the conductive nanowires constituting the electrode pattern included in the lower electrode pattern portion 130 ′ have a second direction along the direction of the lower electrode pattern, and constitute the electrode pattern included in the upper electrode pattern portion 160 ′. It is preferable that the conductive nanowires have the first directivity along the directivity of the upper electrode pattern.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

100, 100 ': resistive touch screen 110: lower substrate
120: lower piezoelectric layers 130 and 130 ': lower electrode pattern portion
135, 135 ': lower electrode wiring portion 140: upper substrate
150: upper piezoelectric layer 160, 160 ': upper electrode pattern portion
165, 165 ': upper electrode wiring portion 170: spacer
180: window G: air gap
A: transparent adhesive

Claims (7)

A lower substrate formed on a lower piezoelectric layer, a lower electrode pattern portion formed on the lower piezoelectric layer, and a lower electrode wiring portion connected to the lower electrode pattern portion;
An upper substrate disposed on an upper side of the lower substrate and having an upper piezoelectric layer formed on an opposing surface, an upper electrode pattern portion formed on the upper piezoelectric layer, and an upper electrode pattern portion formed of the conductive nanowires and connected to the upper electrode pattern portion; And
A spacer disposed between the lower substrate and the upper substrate and having an opening formed therein;
Resistive touch screen comprising a.
The method according to claim 1,
The upper piezoelectric layer and the lower piezoelectric layer is a resistive touch screen, characterized in that consisting of PVDF (Polyvinylidenefluoride) or PVDF derivative.
The method according to claim 1,
The conductive nanowire is a resistive touch screen, characterized in that composed of any one of carbon nanowires or silver nanowires.
The method according to claim 1,
The spacer is a resistive touch screen, characterized in that consisting of a double-sided adhesive sheet.
The method according to claim 1,
Resistive touch screen further comprises a window coupled to the upper substrate.
The method according to claim 1,
The lower electrode pattern part includes a plurality of lower electrode patterns extending in a first direction, and the plurality of lower electrode patterns are arranged in a second direction,
The upper electrode pattern part may include a plurality of upper electrode patterns extending in a second direction, and the plurality of upper electrode patterns may be arranged in a first direction.
The method of claim 6,
The conductive nanowire of the lower electrode pattern part has a second direction, and the conductive nanowire of the upper electrode pattern part has a first direction.
KR1020100107554A 2010-11-01 2010-11-01 Resistive type touch screen KR20120045770A (en)

Priority Applications (1)

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KR1020100107554A KR20120045770A (en) 2010-11-01 2010-11-01 Resistive type touch screen

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013172548A1 (en) * 2012-05-18 2013-11-21 Lg Innotek Co., Ltd. Touch panel and formation of electrode
KR101470075B1 (en) * 2012-06-29 2014-12-10 엘지이노텍 주식회사 Touch panel
CN108594541A (en) * 2018-05-04 2018-09-28 京东方科技集团股份有限公司 A kind of sealant and preparation method thereof, liquid crystal display panel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013172548A1 (en) * 2012-05-18 2013-11-21 Lg Innotek Co., Ltd. Touch panel and formation of electrode
KR101470075B1 (en) * 2012-06-29 2014-12-10 엘지이노텍 주식회사 Touch panel
CN108594541A (en) * 2018-05-04 2018-09-28 京东方科技集团股份有限公司 A kind of sealant and preparation method thereof, liquid crystal display panel
CN108594541B (en) * 2018-05-04 2021-03-16 京东方科技集团股份有限公司 Frame sealing glue, preparation method thereof and liquid crystal display panel

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