KR102052872B1 - Liquid crystal display device for removing easily static electrocity - Google Patents
Liquid crystal display device for removing easily static electrocity Download PDFInfo
- Publication number
- KR102052872B1 KR102052872B1 KR1020130112784A KR20130112784A KR102052872B1 KR 102052872 B1 KR102052872 B1 KR 102052872B1 KR 1020130112784 A KR1020130112784 A KR 1020130112784A KR 20130112784 A KR20130112784 A KR 20130112784A KR 102052872 B1 KR102052872 B1 KR 102052872B1
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- South Korea
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- substrate
- conductive layer
- liquid crystal
- crystal display
- display device
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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
- G02F1/1345—Conductors connecting electrodes to cell terminals
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G02F2202/00—Materials and properties
- G02F2202/22—Antistatic materials or arrangements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention relates to a liquid crystal display device capable of removing static electricity introduced through a black matrix, comprising: a first substrate including a dummy region and an image display region and including a pixel defined by a plurality of gate lines and data lines; A second substrate facing the first substrate and having a color filter layer formed thereon; A thin film transistor formed on each pixel of the first substrate; A conductive layer formed on the second substrate to discharge static electricity to the outside; A black matrix formed over the conductive layer in the outer region of the second substrate and the image display region to block light leakage; A liquid crystal layer formed between the first substrate and the second substrate; And a connection wiring connecting the conductive layer with an external ground to remove static electricity through the ground.
Description
The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device that can easily remove the static electricity generated in the black matrix.
Since the introduction of flat panel display devices, liquid crystal display devices have been used as representative flat panel display devices due to mass production technology, ease of driving means, and high quality.
Such a display element is a device for displaying information on a screen by using the refractive anisotropy of the liquid crystal. As shown in FIG. 1, the liquid crystal display device 1 includes a
The
However, the following problems occur in the liquid crystal display device having the above structure.
As illustrated in FIG. 1, a
In the outer region of the display device, the
In order to prevent such deterioration in image quality, the
Therefore, when an operator during the liquid crystal display device process or the user touches the side of the liquid crystal display device by hand, static electricity generated in the human hand is introduced into the liquid crystal display device through the
SUMMARY OF THE INVENTION The present invention has been made in view of the above, and provides a liquid crystal display device capable of removing static electricity introduced through a black matrix by forming a conductive layer for discharging static electricity on a second substrate and connecting it to ground. The purpose.
In order to achieve the above object, a liquid crystal display device according to the present invention includes a first substrate including a dummy region and an image display region and including a pixel defined by a plurality of gate lines and data lines; A second substrate facing the first substrate and having a color filter layer formed thereon; A thin film transistor formed on each pixel of the first substrate; A conductive layer formed on the second substrate to discharge static electricity to the outside; A black matrix formed over the conductive layer in the outer region of the second substrate and the image display region to block light leakage; A liquid crystal layer formed between the first substrate and the second substrate; And a connection wiring connecting the conductive layer with an external ground to remove static electricity through the ground.
The black matrix has a side end portion extending to the side end portion of the second substrate, and the conductive layer is formed over the entire second substrate or at least a portion of the black matrix in the outer region of the second substrate and at least a portion of the black matrix in the image display area. It is formed at the bottom.
The conductive layer may be formed of a transparent conductive material, such as indium tin oxide (ITO) and indium zinc oxide (IZO), or may be formed of a metal. When the conductive layer is formed of a transparent conductive material, the conductive layer may be annealed at a temperature of 190 degrees or more.
The connection wiring may include a metal wiring formed in the dummy region of the first substrate; And a silver dot disposed on the metal wire and in contact with the conductive layer of the second substrate.
In the present invention, after the conductive layer is formed on the second substrate, the conductive layer is electrically connected to the metal wiring of the dummy region of the first substrate through the connection wiring, thereby preventing static electricity introduced into the liquid crystal display device through the black matrix. Efficiently discharge through ground. Therefore, it is possible to effectively prevent whitening from occurring in the liquid crystal display device due to static electricity.
1 is a view conceptually showing the structure of a conventional liquid crystal display device;
2 is a plan view showing the structure of a liquid crystal display device according to the present invention;
3 is a cross-sectional view showing the structure of a liquid crystal display device according to the present invention.
4A-4C show the structure of a conductive layer according to the invention, respectively.
Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.
2 is a plan view showing the structure of a liquid crystal display device according to the present invention. As shown in FIG. 2, the liquid
In the thin film transistor array substrate of the
The color filter substrate of the
A
Although the
The
The
As described above, in the present invention, when the side end portion of the
A liquid crystal display device having the above structure will be described in more detail with reference to FIG. 3.
3 is a cross-sectional view showing the structure of a liquid
In the image display area of the liquid
The
Meanwhile, a
The thin film transistor formed in the image display area is formed in each of the plurality of pixel areas formed on the
The
The
The protective layer is formed by laminating an inorganic material such as SiO 2 or SiN 2 by PECVD or by applying an organic material such as photo acryl.
The
In addition, a plurality of
The
The
On the other hand, in the present invention, in order to improve the discharge efficiency of static electricity, the conductivity of the
In the present invention, the conductivity of the
Table 1 is a table showing the sheet resistance of the
As shown in Table 1, when annealing is not performed, the sheet resistance of the
When the
In addition, when the
Thus, in the present invention, the sheet resistance effect can be obtained by annealing the
The
The
The
In this case, the
The
The
The
As described above, in the present invention, after the
In the drawing, the
4A to 4C are views showing the shape of the
As shown in FIG. 4A, the
The black matrix formed on the second substrate is formed in a region corresponding to the regions in order to prevent light from leaking into the dummy region of the first substrate, the gate line forming region of the image display region, and the data line forming region. Since the
In this case, the second
The static electricity flowing into the black matrix from the
As shown in FIG. 4B, the
As shown in FIG. 4C, the
As described above, in the present invention, the conductive layer for removing static electricity can be formed in various shapes. The shape and area of the conductive layer are determined according to the conductivity of the conductive layer, the area of the liquid crystal display element, and the like.
As described above, in the present invention, after the conductive layer is formed on the second substrate, the conductive layer is electrically connected to the metal wiring of the dummy region of the first substrate through the connection wiring, thereby to form the inside of the liquid crystal display device through the black matrix. The static electricity introduced into the can be efficiently discharged through the ground. Therefore, it is possible to effectively prevent whitening from occurring in the liquid crystal display device due to static electricity.
In the above description, the liquid crystal display device of the present invention is formed in a specific structure, but the present invention is not limited to this structure. The present invention is to remove the static electricity introduced into the liquid crystal display device through the black matrix when the black matrix extends to the side end of the second substrate, the black matrix extends to the side end of the second substrate and the lower side of the black matrix. It can be applied to the liquid crystal display device of any structure in which the conductive layer is formed over a certain area.
Accordingly, the scope of the present invention is not limited thereto, but various modifications and improvements of those skilled in the art using the basic concept of the present invention as defined in the following claims are also within the scope of the present invention.
120,130: substrate 132: color filter layer
134: black matrix 140: liquid crystal layer
144: seal line 146: conductive layer
152: Silver Dot
Claims (10)
A second substrate facing the first substrate and having a color filter layer formed thereon;
A thin film transistor formed on each pixel of the first substrate;
A conductive layer formed on the second substrate to discharge static electricity to the outside;
A black matrix formed to cover the conductive layer in the outer region and the image display region of the second substrate to block leakage of light and to form a black resin;
A liquid crystal layer formed between the first substrate and the second substrate; And
And a connection wiring connecting the side of the conductive layer exposed from the outer region of the second substrate and the external ground to remove static electricity through the ground.
A metal wiring formed in the dummy region of the first substrate; And
And a silver dot disposed on the metal line and in contact with a side surface of the conductive layer exposed in the outer region of the second substrate.
Priority Applications (1)
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KR1020130112784A KR102052872B1 (en) | 2013-09-23 | 2013-09-23 | Liquid crystal display device for removing easily static electrocity |
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KR1020130112784A KR102052872B1 (en) | 2013-09-23 | 2013-09-23 | Liquid crystal display device for removing easily static electrocity |
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KR20150033158A KR20150033158A (en) | 2015-04-01 |
KR102052872B1 true KR102052872B1 (en) | 2019-12-06 |
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KR1020130112784A KR102052872B1 (en) | 2013-09-23 | 2013-09-23 | Liquid crystal display device for removing easily static electrocity |
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Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102534053B1 (en) | 2016-10-17 | 2023-05-18 | 삼성디스플레이 주식회사 | Display device |
KR102627625B1 (en) * | 2016-10-20 | 2024-01-22 | 삼성전자주식회사 | Touch display having electrostatic discharge protection and electronic device including the same |
KR102546984B1 (en) * | 2016-12-28 | 2023-06-27 | 엘지디스플레이 주식회사 | Liquid crystal display device |
CN106647014A (en) | 2017-03-23 | 2017-05-10 | 京东方科技集团股份有限公司 | Color film substrate, preparation method thereof and display panel |
CN107065288B (en) * | 2017-05-25 | 2020-06-05 | 昆山龙腾光电股份有限公司 | Color film substrate, manufacturing method thereof and liquid crystal display panel |
KR102350908B1 (en) | 2017-06-12 | 2022-01-14 | 삼성디스플레이 주식회사 | Display apparatus |
KR102413716B1 (en) | 2017-09-25 | 2022-06-28 | 삼성디스플레이 주식회사 | Display panel |
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KR100876405B1 (en) * | 2002-12-23 | 2008-12-31 | 엘지디스플레이 주식회사 | Liquid crystal display device manufacturing method |
KR101323473B1 (en) * | 2007-02-21 | 2013-10-31 | 엘지디스플레이 주식회사 | Liquid crystal display panel of horizontal electronic field applying type and method for fabricating thereof |
KR101373500B1 (en) * | 2007-07-23 | 2014-03-12 | 엘지디스플레이 주식회사 | Liquid crystal panel with a preventing function of static electricity |
KR101182229B1 (en) * | 2010-01-08 | 2012-09-12 | 삼성디스플레이 주식회사 | Liquid Crystal display panel and a manufacturing method thereof |
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