KR102000146B1 - Light Control Cell And Image Display Device Including The Same - Google Patents

Light Control Cell And Image Display Device Including The Same Download PDF

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Publication number
KR102000146B1
KR102000146B1 KR1020120155346A KR20120155346A KR102000146B1 KR 102000146 B1 KR102000146 B1 KR 102000146B1 KR 1020120155346 A KR1020120155346 A KR 1020120155346A KR 20120155346 A KR20120155346 A KR 20120155346A KR 102000146 B1 KR102000146 B1 KR 102000146B1
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South Korea
Prior art keywords
substrate
electrode
control cell
light control
convex portion
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KR1020120155346A
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Korean (ko)
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KR20140085132A (en
Inventor
김성우
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엘지디스플레이 주식회사
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Priority to KR1020120155346A priority Critical patent/KR102000146B1/en
Publication of KR20140085132A publication Critical patent/KR20140085132A/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
    • 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
    • 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

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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

In order to achieve the above object, the present invention includes a first substrate having a first main portion at one end; A second substrate having a second recessed portion at a position which does not overlap with the first recessed portion of the first substrate; A first electrode disposed on the first substrate and exposed through the second recess; A second electrode disposed on the second substrate and exposed through the first recess; It provides a light control cell comprising a liquid crystal layer positioned on the first substrate and the second substrate.

Description

Light control cell and image display device including the same {Light Control Cell And Image Display Device Including The Same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polarization control cell and an image display device including the same, and to an optical control cell and an image display device including the same, wherein an electrode in the cell and a circuit for applying a signal thereto are easily connected.

The light control cell is a device that fills a liquid crystal between a first substrate and a second substrate, and uses a rotation principle of the liquid crystal that appears when a voltage is applied to the first substrate and the second substrate. In particular, the polarization direction is controlled by the light control cell formed in this structure. The light control cell having such characteristics can be used as a switching panel by using a liquid crystal lens having a refractive index that varies depending on the direction of light.

The conventional process of manufacturing the light control cell used for this purpose has a problem that it is difficult to produce the electrode portion. Conventional processes and problems thereof will be described in detail with reference to the accompanying drawings.

1 is a view showing the generation of the electrode portion of the conventional light control cell.

As shown in FIG. 1, in the manufacturing process of the conventional light control cell, a conductive material to apply a voltage to the first substrate 1 and the first substrate 1 excluding the cut surface for generating the electrode part 5. (4) and the first substrate (1) with a cutting device (3) that overlaps the second substrate (2) including the electrode through which the voltage is applied to the first substrate (1) and is shorter than the thickness of the first substrate (1). ), The second substrate 2 on which the electrode portions 5 were formed was exposed.

In this case, not only the electrode portion of the first substrate 1 is formed on the second substrate 2, but also the electrode portion of the second substrate 2 is formed, thereby connecting the second substrate 2 and the first substrate 1. The process of producing the electrode part is complicated because the design of a circuit for disposing the conductive material 4 and not allowing the disposed conductive material 4 to contact the electrode of the second substrate 2 is also required.

The material of the substrate used in the conventional process is mainly glass, a problem occurs in the production of the film substrate proposed to reduce the weight and volume of the glass. In the conventional process, a groove is formed in a part of the glass substrate having high hardness, and the electrode part is exposed by applying a physical force such as pressure, but in the case of the film, the electrode part cannot be easily exposed due to the unique ductility. Since not only the substrate but also the electrode portion, and moreover, the second film substrate can be cut, the defective rate increases in the manufacturing process.

The present invention is intended to solve the problems of difficulty in the generation of electrode portions located on the first substrate and the second substrate, inefficiency in space utilization, and defects in the cutting process during the generation of the electrode portions of the light control cell using the film. .

In order to achieve the above object, the present invention includes a first substrate having a first main portion at one end; A second substrate having a second recessed portion at a position spaced apart from the first recessed portion of the first substrate; A first electrode disposed on the first substrate and exposed through the second recess; A second electrode disposed on the second substrate and exposed through the first recess; It provides a light control cell comprising a liquid crystal layer positioned on the first substrate and the second substrate.

A first voltage line connected to the first electrode through the second recess; And a second voltage line connected to the second electrode through the first recess.

And a first insulating portion formed around the first recessed portion and a second insulating portion formed around the second recessed portion.

The first and second recesses may be formed in plural.

In addition, a third recess is formed on the first substrate on the opposite side of the first recess, and a fourth recess is formed on the second substrate on the opposite side of the second recess.

On the other hand, the present invention, the first substrate having a first convex portion at one end; A second substrate having a second convex portion at a position spaced apart from the first convex portion of the first substrate; A first electrode positioned on the first substrate and extending to the first convex portion; A second electrode positioned on the second substrate and extending to the second convex portion; It provides a light control cell comprising a liquid crystal layer positioned on the first substrate and the second substrate.

A first voltage line connected to the first electrode formed on the first convex portion; And a second voltage line connected to the second electrode formed on the second convex portion.

And a first insulating portion formed around the first convex portion and a second insulating portion formed around the second convex portion.

In addition, each of the first and second convex portions may be formed in plural.

A third convex portion is formed on an opposite side of the first convex portion on the first substrate, and a fourth convex portion is formed on an opposite side of the second convex portion on the second substrate.

On the other hand, this invention is a liquid crystal panel; A lenticular lens; Provided is an image display device including the light control cell of any one of claims 1 to 10.

The optical control cell and the image display device including the same according to the present invention perform a cutting process before the bonding process of the first substrate and the second substrate to prevent damage to the substrate and the electrode portion, and to cut each substrate so as not to overlap each other. Therefore, the connection of the voltage line can be made easier, and the electrode part of the light control cell can be prevented from protruding to one side, thereby increasing the space efficiency of the image display device.

1 is a view showing the generation of the electrode portion of the conventional light control cell.
2 is a schematic diagram of a light control cell according to a first embodiment of the present invention.
3 is a schematic diagram of a light control cell according to a second embodiment of the present invention.
4 is a schematic diagram of a light control cell according to a third embodiment of the present invention.
5 is a schematic diagram of a light control cell according to a fourth embodiment of the present invention.
6 is a cross-sectional view of an image display apparatus to which a light control cell is applied according to an embodiment of the present invention.

Detailed Description of the Invention The present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic diagram of a light control cell according to a first embodiment of the present invention.

As shown in FIG. 2, the first substrate 101 and the second substrate 103 each have recesses on one side. In this case, recesses formed in the first substrate 101 and the second substrate 103 should not overlap each other.

As such, when the first substrate 101 having the recessed portions formed on the one side and the second substrate 103 are overlapped, one surface of the second substrate 103 is exposed through the recessed portions formed on the first substrate 101, and the second substrate 103 is exposed. One surface of the first substrate 101 is exposed through a recess formed in the substrate 103. Surfaces exposed to the substrates 101 and 103 are electrodes to which a voltage for changing the liquid crystal array is applied, and the first electrode 131 is exposed to the first substrate 101 exposed from the main portion formed on the second substrate 103. ) Is formed, and a second electrode 132 is formed on the second substrate 103 exposed from the recess formed in the first substrate 101.

The first electrode 131 and the second electrode 132 are for applying a voltage. The first voltage line 111 is connected to the first electrode 131, and the second voltage line is connected to the second electrode 132. 112 is connected. In addition, an insulating part 120 made of an insulator is formed around the recesses formed in the first substrate 101 and the second substrate 103 to prevent shorts that may occur when a voltage line is poor. The insulating part 120 is formed on inner surfaces of each of the first and second substrates 101 and 103.

3 is a schematic diagram of a light control cell according to a second embodiment of the present invention.

As shown in FIG. 3, the first substrate 101 and the second substrate 103 each have a plurality of recesses in one side. At this time, the recessed portions formed on the first substrate 101 and the second substrate 103 do not overlap each other.

When the first substrate 101 having the plurality of recesses formed on the one side and the second substrate 103 are superimposed, the second substrate 103 is exposed through the plurality of recesses formed on the first substrate 101, and the second substrate 103 is exposed. The first substrate 101 is exposed through the plurality of recesses formed in the substrate 103.

The plurality of surfaces exposed to each of the substrates 101 and 103 are electrode portions to which a voltage for changing the liquid crystal array is applied, and are formed on the first substrate 101 through a plurality of recesses formed in the second substrate 103. The first electrode 131 is exposed, and the second electrode 132 formed on the second substrate 103 is exposed through the plurality of recesses formed in the first substrate 101.

That is, in FIG. 3, one recess is formed on each of the substrates 101 and 103 to form one electrode portion for the first and second electrodes 131 and 132. By forming a plurality of recesses, a plurality of electrodes were formed with respect to the first and second electrodes 131 and 132.

The first electrode 131 and the second electrode 132 are for applying a voltage. A plurality of first voltage lines 111 are connected to the first electrode 131, and a plurality of second electrodes 132 are connected to the first electrode 131. The second voltage line 112 of is connected. In addition, an insulating part 120 made of an insulator is formed around the recesses formed in the first substrate 101 and the second substrate 103 to prevent shorts that may occur when a voltage line is poor. The insulating part 120 is formed on inner surfaces of each of the first and second substrates 101 and 103.

4 is a schematic diagram of a light control cell according to a third embodiment of the present invention.

In the case of a large optical control cell, when a voltage is applied only from one side as in the first or second embodiment, a voltage drop occurs and a delay occurs in polarization control according to the optical control cell structure. Can be. In order to prevent this, with reference to Fig. 4, a third embodiment of the light control cell structure which can solve the above-described problem will be described.

As shown in FIG. 4, a plurality of recesses are formed in the first substrate 101 and the second substrate 103. In this case, when one or more recesses are formed in the first end 301 of each substrate, one or more recesses may be formed at another position of the second end 302.

At this time, the recessed portions formed on the first substrate 101 and the second substrate 103 do not overlap each other. When the two substrates having a plurality of recesses formed on both side surfaces are overlapped as described above, the second electrode 132 formed on the second substrate 103 is exposed through the plurality of recesses formed on the first substrate 101, and the second substrate is exposed. The first electrode 131 formed on the first substrate 101 is exposed through the plurality of recesses formed in the 103.

The plurality of surfaces exposed to each substrate are electrode portions to which a voltage for changing the liquid crystal array is applied, and the first electrode 131 formed on the first substrate 101 through a plurality of recesses formed on the second substrate 103. ) Is exposed, and the second electrode 132 formed on the second substrate 103 is exposed through the plurality of recesses formed on the first substrate 101.

The first voltage line 111 is connected to the first electrode 131 exposed through the recessed portion of the second substrate 103, and the second electrode 132 is exposed to the second electrode 132 exposed through the recessed portion of the first substrate 101. The voltage line 112 is connected. In addition, an insulating part 120 made of an insulator is formed in each substrate in order to prevent a short circuit that may occur when a voltage line is connected poorly around the recesses formed in the first substrate 101 and the second substrate 103. The insulating part 120 is formed on inner surfaces of each of the first and second substrates 101 and 103.

The substrate size and the generation position of the recesses of the light control cell manufactured as described above may be different. However, when two substrates overlap, there is no change in that the recesses created in one substrate do not overlap the recesses created in another substrate.

5 is a schematic diagram of a light control cell according to a fourth embodiment of the present invention.

As shown in FIG. 5, one or more convex portions are formed in the first substrate 101 and the second substrate 103 in a range where they do not overlap each other.

A first electrode 131 and a second electrode 132 are formed on each of the first substrate 101 and the second substrate 103. In this case, the first electrode 131 is formed to extend to the iron portion formed on one side of the first substrate 101, the second electrode 132 is formed to extend to the iron portion formed on the second substrate 102. do.

The first and second electrodes 131 and 132 formed on the convex portion serve as an electrode portion to which an external voltage is applied.

That is, the first voltage line 111 is connected to the first electrode 131 formed on the convex portion of the first substrate 101, and the second electrode 132 is formed on the second electrode 132 formed on the convex portion of the second substrate 103. The voltage line 112 is connected. In addition, in order to prevent a short circuit that may occur when a voltage line is poor, the second substrate 103 bordering the first electrode 131 and the first substrate 101 bordering the second electrode 132 are respectively prevented. An insulating part 120 made of an insulator is formed for each substrate of the substrate.

 Here, in the case where each of the convex portions formed on the first substrate 101 and the second substrate 103 is one, as shown in FIG. 5, the convex portions may include the first substrate 101 and the second substrate ( 103 is located on the same side. On the other hand, the convex portion may be located on one side of the first substrate 101 and the other side of the second substrate 103, that is, in opposite directions.

3, a plurality of convex portions may be formed on each of the first and second substrates 101 and 103. Also, as shown in FIG. 4, a plurality of convex portions may be formed in opposite directions to each other.

In the case of the light control cell manufactured according to the fourth embodiment, it is preferable that the first electrode 131 and the second electrode 132 formed when the image display device is manufactured are not exposed. Substrate size and location of convexities may vary. However, when the two substrates overlap, there is no change in that the iron portion formed on one substrate does not overlap with the iron portion formed on the other substrate.

6 is a cross-sectional view of an image display device to which a light control cell according to the present invention is applied.

As shown in FIG. 6, the image display device to which the light control cell 100 is applied includes a lenticular lens unit 310, a light control cell 100, and a liquid crystal panel 200. When the image is driven by driving the device, the image displayed on the liquid crystal panel 200 has a linear polarization characteristic while passing through a polarizing plate (not shown) located outside the upper portion of the liquid crystal panel 200. The polarized light passes through the light control cell 100, and the light control cell 100 controls the first arrangement of the first substrate 101 to change the arrangement of the liquid crystal 125 that controls the direction in which incident light is irradiated. The propagation direction of the light is determined by applying a voltage to the electrode 131 and the second electrode 132 of the second substrate 103. Here, the light control cell 100 may irradiate light such that the refractive index after polarization passes through the lenticular lens unit 310 is different, and the refractive index is changed by a pattern formed in the lenticular lens 320. Accordingly, the image display device may implement a planar image or a stereoscopic image according to the operation of the light control cell 100.

In the present invention, the first and second substrates 101 and 103 of the light control cell 100 have substantially the same size, thereby connecting a voltage applying line to the liquid crystal panel 200 and connecting the light control cell to the device. There is no space problem in the fixing process.

For example, when the first substrate 101 of the light control cell 100 protrudes to one side similarly to the lower substrate of the liquid crystal panel 200, the light control cell may be disposed on the liquid crystal panel 200. When stacking 100 and attaching the FPC to the liquid crystal panel 200, a spatial constraint occurs. However, in the present invention, since the first and second substrates 101 and 103 of the light control cell 100 have substantially the same size, this problem can be prevented.

In addition, when the first substrate 101 of the light control cell 100 protrudes to one side similarly to the lower substrate of the liquid crystal panel 200, when the light control cell 100 is physically fixed to external pressure, The impact may be accumulated on a portion of the substrate that generates the electrode portion. In addition, in the case of the light control cell using the film substrate, the tension due to the continuous shaking is applied by the gap between the voltage applying line and the fixing device may be bent the electrode portion itself.

The electrode part which is continuously subjected to stress caused by impact and bending gradually becomes structurally weakened, and when the cumulative value of the limit of the stress exceeds the limit of the electrode part, the electrode or the electrode part of the light control cell may not withstand the stress and fall off.

The present invention is not limited to the above contents and examples, and can be carried out in various ways without departing from the spirit of the present invention.

100: light control cell 101: first substrate
103: second substrate 111: first voltage line
112: second voltage line 120: insulation
125: liquid crystal 131: first electrode
132: second electrode 200: liquid crystal panel
301: first first 302: second first
310: lenticular lens unit 320: lenticular lens

Claims (11)

A first substrate having a first recess at one end;
A second substrate having a second recessed portion at a position spaced apart from the first recessed portion of the first substrate;
A first electrode disposed on the first substrate and exposed through the second recess;
A second electrode disposed on the second substrate and exposed through the first recess;
A liquid crystal layer positioned between the first substrate and the second substrate,
A first insulating portion formed around the first recessed portion on the inner side of the first substrate, and a second insulating portion formed around the second recessed portion on the inner side of the second substrate;
And the first substrate and the second substrate are independently connected to an external circuit through the first electrode and the second electrode, respectively.
The method of claim 1,
A first voltage line connected to the first electrode through the second recess;
And a second voltage line connected to said second electrode through said first recessed portion.
delete The method of claim 1,
And a plurality of each of the first and second recesses.
The method of claim 1,
And a third recessed portion formed on the first substrate on an opposite side of the first recessed portion, and a fourth recessed portion formed on the second substrate on an opposite side of the second recessed portion.
A first substrate having a first convex portion at one end;
A second substrate having a second convex portion at a position spaced apart from the first convex portion of the first substrate;
A first electrode positioned on the first substrate and extending to the first convex portion;
A second electrode positioned on the second substrate and extending to the second convex portion;
A liquid crystal layer positioned between the first substrate and the second substrate,
A first insulating portion formed on an inner surface of the first substrate bordering the second electrode, and a second insulating portion formed on an inner surface of the second substrate bordering the first electrode;
And the first and second substrates are bonded to each other so that the iron portions formed on the first substrate and the iron portions formed on the second substrate do not overlap each other.
The method of claim 6,
A first voltage line connected to the first electrode formed on the first convex portion;
And a second voltage line connected to the second electrode formed on the second convex portion.
delete The method of claim 6,
And a plurality of each of the first and second convex portions.
The method of claim 6,
And a third convex portion formed on an opposite side of the first convex portion on the first substrate, and a fourth convex portion formed on an opposite side of the second convex portion on the first substrate.
A liquid crystal panel;
A lenticular lens;
An image display apparatus comprising the light control cell of any one of claims 1, 2, 4, 7, 9, and 10.
KR1020120155346A 2012-12-27 2012-12-27 Light Control Cell And Image Display Device Including The Same KR102000146B1 (en)

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KR102353276B1 (en) * 2015-08-31 2022-01-18 엘지디스플레이 주식회사 Panel for adjusting transmittance and transparent display apparatus using the same
KR102495945B1 (en) * 2015-12-07 2023-02-06 엘지디스플레이 주식회사 Light controlling device, and transparent display device including the same
KR102451736B1 (en) * 2017-12-29 2022-10-05 엘지디스플레이 주식회사 Light controlling device, and transparent display device using the same

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US20120206396A1 (en) * 2009-10-27 2012-08-16 Sharp Kabushiki Kaisha Display device with attached touch panel

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KR101472052B1 (en) * 2008-07-30 2014-12-12 삼성디스플레이 주식회사 Display device
KR20110107194A (en) * 2010-03-24 2011-09-30 삼성전자주식회사 Field emission device

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Publication number Priority date Publication date Assignee Title
US20120206396A1 (en) * 2009-10-27 2012-08-16 Sharp Kabushiki Kaisha Display device with attached touch panel

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