KR20080058519A - Polarizing junction glass and liquid crystal display apparatus having the same - Google Patents

Abstract

A polarizing junction glass and an LCD(Liquid Crystal Display) having the same are provided to form a polarizing device between two glasses of the polarizing junction glass, thereby reducing the manufacturing cost. A second glass plate is located oppositely to a first glass plate. A polarizing device is located between the first and second glass plates. Reflection preventive coating or hard coating are performed at a surface or both surfaces of the polarizing junction glass. A substrate(230) includes a TFT(Thin Film Transistor) device. A backlight assembly is formed at the lower portion of the substrate and supplies the light beam. The substrate has a COA(Color filter On Array) structure. The reflection preventive coating or the hard coating are performed at the first glass substrate of the polarizing junction glass. A transparent conduction layer is formed between the second glass plate and the liquid crystal layer.

Description

Polarized laminated glass and liquid crystal display including the same {POLARIZING JUNCTION GLASS AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME}

1A is a cross-sectional view of a polarizing laminated glass according to an embodiment of the present invention.

1B is a cross-sectional view of a polarizing laminated glass according to another embodiment of the present invention.

2A is a cross-sectional view of a liquid crystal display according to an exemplary embodiment of the present invention.

FIG. 2B is a cross-sectional view of only the polarizing laminated glass of the liquid crystal display of FIG. 2A.

3A is a cross-sectional view of a liquid crystal display according to another exemplary embodiment of the present invention.

FIG. 3B is a cross-sectional view illustrating only the polarized laminated glass of the liquid crystal display of FIG. 3A.

<Description of the code for the main part of the invention>

110, 120, 210, 310: polarized laminated glass

111, 121, 211, 311: first glass layer

112, 122, 212, 312: second glass layer

113, 213, and 313: polarizers

115, 125, 215, 315: first cover part 116: second cover part

220, 320: liquid crystal layer 240, 340: backlight unit

236 and 336: first transparent electrode layer

216 and 316: second transparent electrode layer

234, 334: color filter layers 231, 331: glass substrate

233, 333: polarizer

The present invention relates to a polarized laminated glass for the reduction of defects and cost reduction by the polarizing plate, and more particularly, a polarizing element is formed between the outer glass layer to reduce the defect of the polarizing plate, the cost can be reduced And a liquid crystal display device including the same.

Conventionally, a liquid crystal display device includes a lower substrate, an upper substrate, a liquid crystal layer, and the like, wherein the liquid crystal layer is disposed between the lower substrate and the lower substrate, the light is supplied to the lower substrate, and the transmittance is changed by the gray level. The image is displayed on the upper substrate.

In order to use the transmission characteristics of the liquid crystal, a polarizing plate is generally formed at the outermost part of the upper substrate. In addition, a separate outer protective glass is formed on the polarizing plate to protect the polarizing plate.

As described above, the liquid crystal display substrate and the external protective glass are separately manufactured and combined in the manufacturing process. The outer protective glass is a laminated glass prepared by adhering a polyvinyl butyral (P.V.B.) film to two glass plates to be bonded to each other, and designed to have a structure in which glass fragments do not fall even if broken by an external impact.

In such a structure, defects such as various scratches, lifting and stamping may occur during the manufacturing process in which the outermost polarizing plate is combined with the liquid crystal display substrate and the outer protective glass. In addition, since the number of glass substrates forming the liquid crystal display device is large, there is a disadvantage that a lot of manufacturing costs.

Accordingly, the technical problem of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a polarizing laminated glass formed by bonding a polarizing element between an outer glass layer and a liquid crystal display including the same.

The polarizing bonding glass according to the embodiment of the present invention includes a first glass plate, a second glass plate facing the first glass plate, and a polarizing element positioned between the first glass plate and the second glass plate.

An antireflection coating or hard coating may be performed on one or both surfaces of the polarizing glass, and a transparent conductive layer may be coated on one or both surfaces of the polarizing glass. The transparent conductive layer may include indium tin oxide (ITO) or indium zinc oxide (IZO).

According to another exemplary embodiment of the present invention, a liquid crystal display device includes a substrate including a thin film transistor (TFT) element, a backlight assembly formed under the substrate to supply light, and formed to face the substrate. A polarizing laminated glass comprising a second glass plate facing the first glass plate and adjacent to the substrate and a polarizing element positioned between the first and second glass plates and disposed between the second glass plate of the substrate and the polarizing glass. It includes a liquid crystal layer.

The substrate may have a color filter on array (COA) structure, and the first glass plate of the polarizing glass may be coated with an antireflection coating or a hard coating.

A transparent conductive layer may be formed between the second glass plate of the polarizing laminated glass and the liquid crystal layer. Alternatively, a transparent conductive layer may be formed between the second glass plate of the polarizing laminated glass and the polarizing element.

The transparent conductive layer may include indium tin oxide (ITO) or indium zinc oxide (IZO).

Hereinafter, a display device according to an exemplary embodiment will be described in detail with reference to the accompanying drawings.

1A is a cross-sectional view of a polarizing laminated glass according to an embodiment of the present invention.

Referring to FIG. 1, a polarizing laminated glass 110 according to an exemplary embodiment of the present invention may include a first glass plate 111, a second glass plate 112, a polarizing element 113, a first cover part 115, and a first glass plate 111. And a cover portion 116.

The first glass plate 111 and the second glass plate 112 face each other and overlap each other, and a polarizer 113 is disposed between the first glass plate 111 and the second glass plate 112.

The polarizer 113 functions to bond the first glass plate 111 and the second glass plate 112 in addition to the function of polarizing light. Therefore, even if the first glass plate 111 and the second glass plate 112 are damaged by an external impact, the glass fragments do not fall.

The first cover part 115 and the second cover part 116 cover the outside of the first glass plate 111 and the second glass plate 112, respectively.

The first cover part 115 and the second cover part 116 may be formed by an anti reflection coating or a hard coating. The first cover part 115 and the second cover part 116 protect the first and second glass plates 111 and 112 from an external impact.

The first and second cover portions 115 and 116 not only protect the first and second glass plates 111 and 112, but also have an anti-reflection function, resolution, and anti-static effect. ), Anti-pollution, abrasion-resistance and the like.

1B is a cross-sectional view of a polarizing laminated glass according to another embodiment of the present invention.

Referring to FIG. 1B, the polarizing laminated glass 120 according to another embodiment of the present invention includes a first glass plate 121, a second glass plate 122, a polarizer 123, and a first cover part 125. do.

Like the polarizing laminated glass 110 of FIG. 1A, the first glass plate 121 and the second glass plate 122 face each other and overlap each other, and between the first glass plate 121 and the second glass plate 122. The polarizer 123 is disposed. The polarizer 123 functions to bond the first glass plate 121 and the second glass plate 122 in addition to the function of polarizing light.

The first glass plate 121 is covered by the first cover part 125. Since the first glass plate 121 faces the outside of the panel, the first cover part 125 covers the front part of the entire panel.

Since the second glass plate 122 faces the inside of the panel and is not exposed to the outside by coupling with the panel, the second glass plate 122 may be formed by omitting the cover part.

The first cover part 125 may be formed by an anti reflection coating or a hard coating.

2A is a cross-sectional view of a liquid crystal display according to an exemplary embodiment of the present invention. FIG. 2B is a cross-sectional view of only the polarizing laminated glass of the liquid crystal display of FIG. 2A.

2A and 2B, the liquid crystal display 200 according to the exemplary embodiment of the present invention includes a polarizing glass 210, a liquid crystal layer 220, a substrate 230, and a backlight unit 240. . The liquid crystal layer 220 is disposed between the polarizing glass 210 and the substrate 230, and the backlight unit 240 is disposed under the substrate 230.

The substrate 230 includes a first transparent electrode layer 236, a color filter layer 234, a glass substrate 231, and a polarizer 233.

The color filter layer 234 is formed on the glass substrate 231, and the first transparent electrode layer 236 is formed on the color filter layer 234. The polarizer 233 is formed under the glass substrate 231.

The backlight unit 240 is positioned below the polarizer 233 of the glass substrate 231 to supply light toward the polarizer 233.

The polarizing glass 210 includes a first glass plate 211, a second glass plate 212, a polarizer 213, a first cover part 215, and a second transparent electrode layer 216.

The first glass plate 211 and the second glass plate 212 face each other and overlap each other, and a polarizer 213 is disposed between the first glass plate 211 and the second glass plate 212.

The polarizer 213 functions to bond the first glass plate 211 and the second glass plate 212 in addition to the function of polarizing light. Therefore, even if the first glass plate 211 and the second glass plate 212 is damaged by an external impact, glass fragments do not fall.

The first cover part 215 covers an upper portion of the first glass plate 211. The first cover part 215 may be formed by an anti reflection coating or a hard coating.

The second transparent electrode layer 216 is formed under the second glass plate 212. The transparent electrode layer 216 includes indium tin oxide (ITO) or indium zinc oxide (IZO).

2A, first and second transparent electrode layers 236 and 216 surround the liquid crystal layer 220. Since a general upper substrate does not exist, all the elements required for the display device are formed on the substrate 230. Thus, the color filter layer 234 is formed on the substrate.

 The structure of the liquid crystal display 200 according to the exemplary embodiment of the present invention is applied to the case of using the vertical switching mode. The vertical switching mode includes a TN mode, a VA mode, a PVA mode, a transflective mode, and the like.

3A is a cross-sectional view of a liquid crystal display according to another exemplary embodiment of the present invention. FIG. 3B is a cross-sectional view illustrating only the polarized laminated glass of the liquid crystal display of FIG. 3A.

Referring to FIGS. 3A and 3B, the liquid crystal display 300 according to the exemplary embodiment of the present invention may be the same as that of the liquid crystal display device 200 of FIGS. 2A and 2B. ), A substrate 330, and a backlight unit 340. The liquid crystal layer 320 is disposed between the polarization bonding glass 310 and the substrate 330, and the backlight unit 340 is disposed under the substrate 330.

The substrate 330 includes a first transparent electrode layer 336, a color filter layer 334, a glass substrate 331, and a polarizer 333.

The color filter layer 334 is formed on the glass substrate 331, and the first transparent electrode layer 336 is formed on the color filter layer 334. The polarizer 333 is formed under the glass substrate 331.

The backlight unit 340 is positioned under the polarizer 333 of the glass substrate 331 and supplies light toward the polarizer 333.

The polarizing glass 310 includes a first glass plate 311, a second glass plate 312, a polarizer 313, a first cover part 315, and a second transparent electrode layer 316.

The first glass plate 311 and the second glass plate 312 face each other and overlap each other, and a polarizer 313 is disposed between the first glass plate 311 and the second glass plate 312.

The polarizer 313 functions to bond the first glass plate 311 and the second glass plate 312 in addition to the function of polarizing light. Therefore, even if the first glass plate 311 and the second glass plate 312 is damaged by an external impact, glass fragments do not fall.

The first cover part 315 covers the outside of the first glass plate 311 and the second glass plate 312. The first cover part 315 may be formed by an anti reflection coating or a hard coating. The first cover part 315 protects the liquid crystal display device 300 from external shock.

The second transparent electrode layer 316 is formed between the polarizer 313 and the second organic plate 312. The second transparent electrode layer 316 may include indium tin oxide (ITO), indium zinc oxide (IZO), or the like.

Referring to FIG. 3A, unlike the structure of the liquid crystal display 200 of FIG. 2A, the second transparent electrode layer 316 is formed in the polarization bonding glass 310.

 The structure of the liquid crystal display 300 according to the exemplary embodiment of the present invention is applied to the case of using an in plane switching mode. The vertical IPS mode includes not only an IPS mode but also an FFS mode (PLS mode).

According to the present invention, by inserting a polarizing element between the first glass plate and the second glass plate of the polarizing laminated glass, it is possible to prevent a defect such as scratching, lifting, stamping of the external polarizing plate generated when the external protective glass and the liquid crystal panel is combined. Can be.

In addition, since the number of glass substrates required for the production of the liquid crystal display device is reduced by forming the polarizing laminated glass for the liquid crystal layer of the liquid crystal display device, there is also an effect of cost reduction.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (10)

First glass plate; A second glass plate facing the first glass plate; Polarizing bonding glass comprising a polarizing element positioned between the first glass plate and the second glass plate. The polarizing laminated glass according to claim 1, wherein an antireflection coating or hard coating is applied to one or both surfaces of the polarizing laminated glass. The polarizing laminated glass according to claim 1, wherein a transparent conductive layer is coated on one or both surfaces of the polarizing laminated glass. The polarizing laminated glass of claim 3, wherein the transparent conductive layer comprises indium tin oxide (ITO) or indium zinc oxide (IZO). A substrate including a thin film transistor (TFT) device; A backlight assembly formed under the substrate to supply light; A polarizing laminated glass formed to face the substrate and including a first glass plate, a second glass plate facing the first glass plate, and positioned between the substrate and a polarizing element positioned between the first and second glass plates; And And a liquid crystal layer disposed between the substrate and the second glass plate of the polarizing laminated glass.  6. The liquid crystal display of claim 5, wherein the substrate has a color filter on array (COA) structure. 6. The liquid crystal display device according to claim 5, wherein the first glass plate of the polarizing laminated glass is coated with an antireflection coating or a hard coating. The liquid crystal display device according to claim 7, wherein a transparent conductive layer is formed between the second glass plate of the polarizing laminated glass and the liquid crystal layer. The liquid crystal display device according to claim 7, wherein a transparent conductive layer is formed between the second glass plate of the polarizing laminated glass and the polarizing element. The liquid crystal display device of claim 8 or 9, wherein the transparent conductive layer comprises indium tin oxide (ITO) or indium zinc oxide (IZO).

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