WO2019208918A1 - Panneau à cristaux liquides et procédé de gravure d'un panneau à cristaux liquides - Google Patents

Panneau à cristaux liquides et procédé de gravure d'un panneau à cristaux liquides Download PDF

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Publication number
WO2019208918A1
WO2019208918A1 PCT/KR2019/001492 KR2019001492W WO2019208918A1 WO 2019208918 A1 WO2019208918 A1 WO 2019208918A1 KR 2019001492 W KR2019001492 W KR 2019001492W WO 2019208918 A1 WO2019208918 A1 WO 2019208918A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal panel
substrate
etching
edge
Prior art date
Application number
PCT/KR2019/001492
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English (en)
Korean (ko)
Inventor
이경찬
Original Assignee
(주)코텍
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Publication of WO2019208918A1 publication Critical patent/WO2019208918A1/fr

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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
    • 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
    • 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

Definitions

  • the present invention relates to a liquid crystal panel and an etching method for the liquid crystal panel, and more particularly to the liquid crystal panel and the liquid crystal panel etching method which can be easily bent because the liquid crystal panel is uniformly etched by the etching liquid. It is about.
  • the display device includes a liquid crystal display device, an organic electro-luminescence display device, a plasma display panel, and a field emission display device.
  • liquid crystal displays have advantages such as light weight, small size, low power consumption, and full color video, and are widely applied to mobile phones, navigation, monitors, and televisions.
  • the liquid crystal display displays an image corresponding to the video signal by adjusting the light transmittance of the liquid crystal cells on the liquid crystal panel.
  • the liquid crystal panel includes a lower substrate, an upper substrate, and a liquid crystal layer interposed between these substrates.
  • a TFT-LCD using a thin film transistor (TFT) as a switching element is mainly used.
  • a plurality of display signal lines such as a gate line, a data line, a plurality of thin film transistors, and a pixel electrode, are formed on a lower substrate of two substrates of a liquid crystal panel disposed to face each other, and a color filter and a common electrode are formed on an upper substrate of two substrates. Is formed.
  • the liquid crystal panel is generally manufactured in a flat shape, when a curved display is required, an etching liquid is sprayed onto the liquid crystal panel to thin the liquid crystal panel to a predetermined thickness and then bend the liquid crystal panel.
  • a driving circuit unit may be installed at an edge of the liquid crystal panel, and the driving circuit unit may include a printed circuit board (PCB) for transmitting signals and a tape carrier package (TCP) for connecting the printed circuit board and the liquid crystal panel. do.
  • PCB printed circuit board
  • TCP tape carrier package
  • the edge portion of the liquid crystal panel may be easily broken, so that the masking operation is performed to prevent the etchant from being injected into the edge of the liquid crystal panel.
  • the background art of the present invention is Republic of Korea Patent Registration No. 10-1333770 (Nov. 21, 2013 registered, name of the invention: an etching apparatus, a curved display panel manufacturing apparatus including the same, a curved display panel manufacturing method using the same, and thereby Manufactured curved display panel).
  • the present invention has been made to improve the above problems, and an object of the present invention is that the liquid crystal panel is uniformly etched by the etching solution, so that the bending of the liquid crystal panel can be easily performed. To provide.
  • a liquid crystal panel includes: a first substrate, a second substrate spaced apart from the first substrate, a liquid crystal layer positioned between the first substrate and the second substrate, and a first substrate and a second substrate. It is characterized in that the edge of the sealing by sealing the outer side of the liquid crystal layer is attached by heat fusion.
  • the sealing portion is characterized in that formed by the irradiation of the laser beam.
  • the edge of the first substrate and the second substrate is characterized in that it is cut by laser cutting after the etching is completed.
  • the etching is completed is characterized in that the curved surface is fixed.
  • Etching method for a liquid crystal panel comprises the steps of: supplying a liquid crystal panel having a liquid crystal layer between the first substrate and the second substrate, and irradiated with light along the edge of the liquid crystal panel sealed on the outside of the liquid crystal panel Forming a portion and etching the liquid crystal panel in which the sealing portion is formed.
  • the edge of the liquid crystal panel is irradiated with a laser beam to heat-bond the edges of the first substrate and the second substrate.
  • the front surface of the first substrate and the second substrate in contact with the etchant is uniformly etched, characterized in that no step is formed.
  • the method may further include cutting an edge of the liquid crystal panel after etching the liquid crystal panel.
  • the liquid crystal panel is cut by irradiating a laser to the edge of the liquid crystal panel.
  • the method may further include bent and fixing the liquid crystal panel whose edges are cut in a curved shape.
  • the bending of the liquid crystal panel can be easily performed and the phenomenon of preventing the liquid crystal panel from being damaged can be prevented. Can be.
  • the present invention eliminates a separate masking operation for protecting the edge of the liquid crystal panel before etching, productivity can be improved by shortening the production time.
  • FIG. 1 is a flowchart illustrating an etching method of a liquid crystal panel according to an exemplary embodiment of the present invention.
  • FIG. 2 is a perspective view illustrating a liquid crystal panel according to an embodiment of the present invention.
  • FIG 3 is a perspective view illustrating a state in which a sealing unit is formed on an edge of a liquid crystal panel according to an exemplary embodiment of the present invention.
  • FIG. 4 is a cross-sectional view illustrating a state in which a sealing unit is formed on an edge of a liquid crystal panel according to an exemplary embodiment of the present invention.
  • FIG. 5 is a view illustrating a state in which an etchant is sprayed on the outside of the liquid crystal panel according to an exemplary embodiment of the present invention.
  • FIG. 6 is a perspective view showing a state of cutting the edge of the liquid crystal panel according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view illustrating a curved state of the liquid crystal panel according to the exemplary embodiment of the present invention.
  • FIG. 1 is a flowchart illustrating an etching method of a liquid crystal panel according to an embodiment of the present invention
  • FIG. 2 is a perspective view showing a liquid crystal panel according to an embodiment of the present invention
  • FIG. 3 is an embodiment of the present invention.
  • 4 is a perspective view illustrating a state in which a sealing unit is formed at an edge of a liquid crystal panel according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view illustrating a state in which a sealing unit is formed at an edge of a liquid crystal panel according to an embodiment of the present invention.
  • FIG. 6 is a view illustrating a state in which an etchant is injected to the outside of the liquid crystal panel according to an exemplary embodiment.
  • FIG. 6 is a perspective view illustrating a state of cutting the edge of the liquid crystal panel according to the exemplary embodiment.
  • FIG. A cross-sectional view illustrating a state in which a liquid crystal panel according to an embodiment of the present invention is bent in a curved shape.
  • the liquid crystal panel 1 includes a first substrate 10 and a second substrate spaced apart from the first substrate 10. 20 and the liquid crystal layer 30 positioned between the first substrate 10 and the second substrate 20 and the edges 12 and 22 of the first substrate 10 and the second substrate 20.
  • the sealing part 40 which adheres by heat fusion and seals the outer side of the liquid crystal layer 30 is included.
  • the liquid crystal panel 1 may be variously modified within a technical concept of contacting a plurality of glasses.
  • the liquid crystal panel 1 according to the exemplary embodiment is coupled in a state where the first substrate 10 and the second substrate 20 face each other, and the liquid crystal layer is interposed between the first substrate 10 and the second substrate 20. 30 is provided.
  • the first substrate 10 is a TFT substrate and the second substrate 20 is a CF substrate.
  • the first substrate 10 and the second substrate 20 are spaced at set intervals, and a liquid crystal is injected between the first substrate 10 and the second substrate 20 to form the liquid crystal layer 30.
  • the sealing part 40 is attached after the edge 12 of the first substrate 10 and the edge 22 of the second substrate 20 are melted by heat fusion. It may be formed in various shapes within the technical spirit of sealing the outside of the layer (30). Sealing unit 40 according to an embodiment is formed by the irradiation of the laser beam irradiated from the sealing device (50).
  • the liquid crystal panel 1 is etched to a predetermined thickness using a method of spraying or applying an etchant to the liquid crystal panel 1 having the sealing portion 40 formed thereon.
  • the liquid crystal panel 1 according to the exemplary embodiment is etched by the etchant injected from the etching apparatus 70.
  • edge 12 of the first substrate 10 and the edge 22 of the second substrate 20 are cut by laser cutting after the etching is completed.
  • the laser generated by the cutting device 60 is irradiated to a point within 1 mm from the end of the liquid crystal panel 1 so that cracks may occur or the edge 12 of the first substrate 10 having an uneven plane and the second substrate.
  • the edge 22 of 20 is cut off.
  • first substrate 10 and the second substrate 20 having completed etching have the same thickness over the entire area. Therefore, as illustrated in FIG. 7, the bending operation of bending the liquid crystal panel 1 in a curved shape may be more easily performed.
  • an etching method for a liquid crystal panel according to the present invention includes a liquid crystal panel 1 having a liquid crystal layer 30 between a first substrate 10 and a second substrate 20. It has a step (S10) of supplying.
  • the edges 12 and 22 of the first and second substrates 10 and 20 are irradiated by irradiating a laser beam to the edges 12 and 22 of the liquid crystal panel 1. Since it is thermally fused to form a sealing portion (40).
  • the laser irradiated from the sealing device 50 provided above the liquid crystal panel 1 is irradiated to the edges 12 and 22 of the liquid crystal panel 1 in which the liquid crystal layer 30 is formed.
  • the edge 12 of the first substrate 10 and the edge 22 of the second substrate 20 to which the laser is irradiated are melted and fused to form a sealing portion 40 on the outer side of the liquid crystal layer 30. Therefore, the liquid crystal layer 30 may be prevented from being damaged from the etchant, and the liquid crystal layer 30 may be prevented from leaking to the outside of the liquid crystal panel 1. In addition, due to the installation of the sealing part 40, a time and a cost required for installing or removing a separate masking tape may be reduced.
  • the liquid crystal panel 1 in which the sealing part 40 is formed is etched (S30). After moving the liquid crystal panel 1 having the sealing portion 40 formed around the edges 12 and 22 to a position facing the etching apparatus 70, the liquid crystal panel 1 by the etching liquid sprayed from the etching apparatus 70. Both sides of are etched. In the step of etching the liquid crystal panel 1, since the entire area of the first substrate 10 and the second substrate 20 in contact with the etchant is etched uniformly so that no step is formed, the defective rate of post processing may be reduced.
  • the edges 12 and 22 of the liquid crystal panel 1 are cut (S40).
  • the edges 12 and 22 of the liquid crystal panel 1 may be cut by a tool having a blade, or may be cut by irradiation of light rays.
  • the liquid crystal panel 1 is cut by irradiating a laser to the edges 12 and 22 of the liquid crystal panel 1.
  • the cutting device 60 is installed on the upper side facing the liquid crystal panel 1, and the laser beam irradiated from the cutting device 60 is irradiated along the edges 12 and 22 of the liquid crystal panel 1 and the liquid crystal panel 1. Cut the edges 12, 22 of the. If the edges 12 and 22 of the liquid crystal panel 1 are not cut, when the edges 12 and 22 of the liquid crystal panel 1 do not form a flat surface, the liquid crystal panel 1 is curved. It is more likely to cause cracks.
  • the laser irradiated from the cutting device 60 is irradiated along the edges 12 and 22 of the liquid crystal panel 1 so that the sealing portion formed by heat fusion when cutting the edges 12 and 22 of the liquid crystal panel 1 ( 40 may also be cut together, and if necessary, only the edges 12 and 22 of the liquid crystal panel 1 may be cut, leaving the seal 40.
  • the liquid crystal panel 1 in which the edges 12 and 22 are cut is curved and fixed in a curved shape (S50).
  • S50 a curved shape
  • the edges 12 and 22 of the liquid crystal panel 1 are removed, and the liquid crystal panel 1 is bent by bending the liquid crystal panel 1. Is formed into a curved shape.
  • the liquid crystal panel 1 can be bent easily. The phenomenon that the liquid crystal panel 1 is damaged can also be prevented.
  • productivity can be improved by shortening the production time, and the liquid crystal panel 1 is damaged when the masking tape is removed. The phenomenon can also be prevented.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un panneau à cristaux liquides et un procédé de gravure de ce panneau à cristaux liquides. Un panneau à cristaux liquides selon la présente invention est caractérisé en ce qu'il comprend : un premier substrat ; un second substrat installé de manière espacée par rapport au premier substrat ; une couche à cristaux liquides située entre le premier substrat et le second substrat ; et une partie d'étanchéité qui assure l'étanchéité de l'extérieur de la couche à cristaux liquides lorsque les bords du premier substrat et du second substrat sont fixés par liaison thermique.
PCT/KR2019/001492 2018-04-26 2019-02-07 Panneau à cristaux liquides et procédé de gravure d'un panneau à cristaux liquides WO2019208918A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20180048342 2018-04-26
KR10-2018-0048342 2018-04-26

Publications (1)

Publication Number Publication Date
WO2019208918A1 true WO2019208918A1 (fr) 2019-10-31

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080048272A (ko) * 2006-11-28 2008-06-02 엘지디스플레이 주식회사 플렉서블 표시장치의 제조 방법
JP2010097846A (ja) * 2008-10-17 2010-04-30 Toshiba Corp 封止材、フラットパネルディスプレイ、およびフラットパネルディスプレイの製造方法
KR20140031020A (ko) * 2012-09-04 2014-03-12 (주)코텍 액정디스플레이 장치의 벤딩 방법
KR20150083448A (ko) * 2012-10-26 2015-07-17 주식회사 토비스 곡면형 디스플레이의 제조방법
KR20170112650A (ko) * 2016-04-01 2017-10-12 주식회사 토비스 곡면형 디스플레이패널의 제조방법 및 이 제조방법에 의해 제조된 곡면형 디스플레이패널

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080048272A (ko) * 2006-11-28 2008-06-02 엘지디스플레이 주식회사 플렉서블 표시장치의 제조 방법
JP2010097846A (ja) * 2008-10-17 2010-04-30 Toshiba Corp 封止材、フラットパネルディスプレイ、およびフラットパネルディスプレイの製造方法
KR20140031020A (ko) * 2012-09-04 2014-03-12 (주)코텍 액정디스플레이 장치의 벤딩 방법
KR20150083448A (ko) * 2012-10-26 2015-07-17 주식회사 토비스 곡면형 디스플레이의 제조방법
KR20170112650A (ko) * 2016-04-01 2017-10-12 주식회사 토비스 곡면형 디스플레이패널의 제조방법 및 이 제조방법에 의해 제조된 곡면형 디스플레이패널

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