KR20150029104A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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Publication number
KR20150029104A
KR20150029104A KR20130107832A KR20130107832A KR20150029104A KR 20150029104 A KR20150029104 A KR 20150029104A KR 20130107832 A KR20130107832 A KR 20130107832A KR 20130107832 A KR20130107832 A KR 20130107832A KR 20150029104 A KR20150029104 A KR 20150029104A
Authority
KR
South Korea
Prior art keywords
shielding film
light
light shielding
liquid crystal
display area
Prior art date
Application number
KR20130107832A
Other languages
Korean (ko)
Inventor
김원식
Original Assignee
하이디스 테크놀로지 주식회사
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 하이디스 테크놀로지 주식회사 filed Critical 하이디스 테크놀로지 주식회사
Priority to KR20130107832A priority Critical patent/KR20150029104A/en
Publication of KR20150029104A publication Critical patent/KR20150029104A/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
    • G02F1/1335—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
    • G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
    • 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

Abstract

The present invention relates to a liquid crystal display device. The liquid crystal display device according to the present invention is partitioned into a display area displayed as a screen and a peripheral area which is peripheral to the display area. The liquid crystal display device of the present invention includes: a number of gate lines and a number of data lines which are arranged as crossing with each other in order to define a number of pixel areas in the display area; a first light shielding film which is formed to shield an area for light shielding in the display area, and a second light shielding film which is formed to shield the peripheral area from the light. The first light shielding film and the second light shielding film are separated by a separate space of a fixed distance. By this, a light shielding film formed on a color filter substrate is partitioned into the first light shielding film in the display area and the second light shielding film in the peripheral area which is peripheral to the display area. The first light shielding film and the second light shielding film are separated by the separate space so that charged charges do not move to the display area through the first light shielding film even though an outer end of the second light shielding film is exposed. Thus, whitening phenomenon can be prevented.

Description

[0001] LIQUID CRYSTAL DISPLAY DEVICE [0002]

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device, and more particularly, to a liquid crystal display device having a first light shielding film formed in a display region and a second light shielding film formed in a peripheral region, The second light-shielding film, and the second light-shielding film, so that charge can be prevented from being transferred to the first light-shielding film through the second light-shielding film even if the outer end of the second light-

In general, a liquid crystal display device includes a liquid crystal layer formed by injecting liquid crystal between an upper substrate and a lower substrate which are transparent substrates facing each other, and the lower substrate is an array substrate on which an array structure is formed, A plurality of pixel regions are defined, and the color filter substrate on which the color filter is formed is formed as a color filter in a region facing the pixel region defined on the array substrate.

The liquid crystal display device is divided into a vertical electric field type and a horizontal electric field type on the basis of a driving electric field, and a vertical electric field type is a method of driving a liquid crystal by using an electric field in a vertical direction formed on a liquid crystal layer between two substrates, Method is a method of driving a liquid crystal using an electric field in a horizontal direction formed in a liquid crystal layer.

In recent years, the horizontal field method has been widely adopted in smart phones and tablet PCs in recent years because it has a wide viewing angle, a high contrast ratio, and a screen distortion caused by touching the screen.

FIG. 1 is a schematic view of a conventional horizontal electric field type liquid crystal display device, and FIG. 2 is a plan view of FIG. 1 and 2, the horizontal electric field system is arranged such that the polarizer filter substrate 100 and the array substrate 200 are opposed to each other with the liquid crystal layer 300 interposed therebetween.

A plurality of pixel regions 111a are defined by a plurality of gate lines 211 and data lines 212 arranged in a crossing manner in a display region 111 of the array substrate 200, (Not shown) and a common electrode (not shown) are formed in the pixel region 111a, and a thin film transistor (not shown) is formed on one side of each pixel region 111a to selectively drive the pixel electrode.

In the peripheral region 111 of the array substrate 200, a plurality of pads for connecting the plurality of fan-out wirings and the fan-out wirings to the external FPC circuit are formed.

A color filter 110 is formed in the display region 111 of the color filter substrate 100 to correspond to each pixel region 111a and a back electrode 140 is formed on the color filter substrate 100 And a light shielding film 120 (black matrix) is formed between each color filter 110.

The light shielding film 120 may be formed in a peripheral region 112 of the color filter substrate 100 from the outer periphery of the color filter 110 to the peripheral region 112 ) To the end.

After the light shielding film 120 is formed up to the peripheral region 112, the color filter substrate 100 and the array substrate 200 are bonded together through the sealant 400 and are cut through a predetermined cutting process as shown in FIG. 3 When cut, the outermost end of the light-shielding film 120 is configured to be exposed to the outside.

On the other hand, the liquid crystal 310 of the liquid crystal layer 300 interposed between the color filter substrate 100 and the array substrate 200 is driven by the driving power applied to the electrode lines 210 such as the gate lines 211 and the data lines 212 And controls the liquid crystal 310 to rotate in the horizontal direction.

When a static electricity is generated on the surface of the color filter 110 or a charging phenomenon occurs due to a leakage current during driving in a state having the above structure, a vertical electric field as shown in FIG. 1 (a) So that abnormal driving of the liquid crystal 310 is caused to cause bleeding phenomenon.

In the process of cutting the color filter substrate 100 in the cutting process, a part of the back electrode 140 is cut out in FIG. 4 (a) and FIG. 4 Similarly, a phenomenon of contact with the outer end of the exposed light-shielding film 120 occurs.

If a charging phenomenon occurs in the back electrode 140 in this state, some of the charged charge moves to the light shielding film 120 through the portion c of the light shielding film 120 which is in contact with the exposed end face, A whitening phenomenon is caused by the formation of a vertical electric field.

As shown in FIG. 5, the charging phenomenon caused by the drive signal is a second cause of the whitening phenomenon. The charging phenomenon occurs when the FPC circuit 510 is partially driven A signal is transmitted to the display region 111 via the light shielding film 120, and a vertical electric field is formed in the liquid crystal layer 300 to cause a whitening phenomenon.

In order to solve the above problem, the outermost end face of the light shielding film 120 is formed to be located only inside the substrate so as not to be exposed at the time of cutting, or the charge charged in the color filter 110 is removed using a separate conductive material A method of solving the grounding process has been proposed.

However, in the above-described methods, there is a problem that when the cutting line is moved or there is no separate pattern forming region for grounding, a limit is generated. 3 to 4, the reference numeral 130 is an overcoat layer.

Even in the case of the vertical electric field method, charges charged from the outside are transferred to the display region via the light shielding film 120, thereby forming an unintended electric field in the liquid crystal layer 300, There is a problem that the phenomenon is caused.

Korean Patent No. 0513651

SUMMARY OF THE INVENTION It is an object of the present invention to provide a color filter substrate in which a light shielding film formed on a color filter substrate is divided into a first light shielding film in a display region and a second light shielding film in a peripheral region surrounding the display region, The first light-shielding film and the second light-shielding film are formed with a space therebetween so that charges charged in the second light-shielding film located in the peripheral region can not flow into the first light-shielding film located in the display region .

Another object of the present invention is to provide a liquid crystal display device capable of preventing whitening in a display area by preventing charges charged from the outside from being transmitted to the display area.

A further object of the present invention is to provide a liquid crystal display device capable of preventing the leakage of light generated through the spacing space by forming the spacing space above the gate line or the data line.

According to an embodiment of the present invention, there is provided a liquid crystal display device including a display region and a peripheral region surrounding the display region, the display region being divided into a plurality of gate lines And a data line; And a second light-shielding film formed to shield light from the peripheral region, wherein the first light-shielding film and the second light-shielding film are spaced apart from each other by a predetermined distance, The liquid crystal display device being characterized in that:

Here, the spacing space may be formed on at least one of the gate line and the data line.

In addition, the spacing distance of the spacing space is preferably 1 탆 to 3 탆.

The first light-shielding film and the second light-shielding film are preferably made of a conductive material.

According to the present invention, the light-shielding film formed on the color filter substrate is divided into a first light-shielding film in the display region and a second light-shielding film in the peripheral region surrounding the display region, wherein the first light- And charges charged in the second light-shielding film located in the peripheral region can be prevented from flowing into the first light-shielding film located in the display region.

Further, there is provided a liquid crystal display device capable of preventing whitening in a display area by preventing charges charged from the outside from being transmitted to the display area.

Also, a liquid crystal display device capable of preventing light leakage occurring through the spacing space by forming the spacing space above the gate line or the data line is provided.

1 is a schematic view of a conventional liquid crystal display device,
Fig. 2 is a plan view of Fig. 1,
Figure 3 is a cross-sectional view of Figure 2b,
4 and 5 are a state diagram of a conventional liquid crystal display device,
6 is a schematic view of a liquid crystal display device according to the first embodiment of the present invention,
7 is a cross-sectional view of FIG. 6B.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, a liquid crystal display according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 6 is a schematic view of a liquid crystal display device according to a first embodiment of the present invention, and FIG. 7 is a sectional view of FIG. 6B.

6 and 7, a liquid crystal display device according to the first embodiment of the present invention includes a color filter substrate 10 and an array substrate 20 interposed between the liquid crystal layer 30 and the sealant 40 And is divided into a display area 1 displayed on the screen and a peripheral area 2 surrounding the display area 1. [

A plurality of pixel regions A are defined by a plurality of gate lines and data lines arranged in a crossing manner in the display region 1 of the array substrate 20 and common to the pixel electrodes for driving each pixel region A. Driving electrodes such as electrodes and thin film transistors for driving the driving electrodes are formed.

In the peripheral region 2 of the array substrate 20, a fan-out wiring and various pads for applying signals to the plurality of pixel regions A are formed.

A color filter 11 is formed in a display region 1 of the color filter substrate 10 in a region corresponding to each pixel region A. A first light blocking film (12) is formed. At this time, the first light-shielding film 12 and the second light-shielding film 13 to be described later are made of a conductive material.

A second light shielding film 13 for shielding the peripheral region 2 of the array substrate 20 is formed on the same layer as the first light shielding film 12 in the peripheral region 2 of the color filter substrate 10 do.

At this time, the first light blocking film 12 and the second light blocking film 13 are formed with a space 14 spaced apart by a certain distance therebetween. At this time, it is preferable that the spacing distance of the spacing space 14 is 1 占 퐉 to 3 占 퐉.

That is, the outermost portion of the display area 1 of the first light-shielding film 12 is formed with the second light-shielding film 13 and the spacing space 14 therebetween.

 The spacing space 14 is formed on one of the electrode wirings 21 such as a gate line or a data line formed on the array substrate 20 to prevent light leakage through the spacing space 14. [

Even if a part of the back electrode 16 is partially contacted with the second light shielding film 13 in the cutting process, (1).

Further, even if the bonding agent for FPC circuit bonding is bonded to the outer edge of the second light-shielding film 13, the charge can not move to the display region side through the space 14.

As a result, the electric charge charged through the second light-shielding film 13 can not move to the display region side through the spacing space 14, thereby preventing the unintentional electric field from being generated in the display region 1, have.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

[Description of Reference Numerals]
1: display area 2: peripheral area
10: Color filter substrate 11: Color filter
12: first light-shielding film 13: second light-
14: spacing space 15: overcoat layer
16: back electrode 20: array substrate
21: electrode wiring 30: liquid crystal layer
40: Sealant

Claims (4)

1. A liquid crystal display device comprising: a display area divided into a display area and a peripheral area surrounding the display area,
A plurality of gate lines and data lines crossing each other such that a plurality of pixel regions are defined in the display region;
A first light shielding film formed to shield an area to be shielded from the display area, and a second light shielding film formed to shield the peripheral area,
Wherein the first light-shielding film and the second light-shielding film are spaced apart from each other by a predetermined distance. The method according to claim 1,
Wherein the spacing space is formed on at least one of the gate line and the data line. 3. The method of claim 2,
And the spacing distance of the spacing space is from 1 mu m to 3 mu m. The method according to claim 1,
Wherein the first light-shielding film and the second light-shielding film are made of a conductive material.

KR20130107832A 2013-09-09 2013-09-09 Liquid crystal display device KR20150029104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130107832A KR20150029104A (en) 2013-09-09 2013-09-09 Liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130107832A KR20150029104A (en) 2013-09-09 2013-09-09 Liquid crystal display device

Publications (1)

Publication Number Publication Date
KR20150029104A true KR20150029104A (en) 2015-03-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR20130107832A KR20150029104A (en) 2013-09-09 2013-09-09 Liquid crystal display device

Country Status (1)

Country Link
KR (1) KR20150029104A (en)

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