KR20080053673A - Liquid crystal display and fabricating method thereof - Google Patents

Abstract

An LCD(Liquid Crystal Display) and a method for manufacturing the same are provided to prevent light leakage and improve contrast by arranging the penetration axes of two polarizing plates perpendicularly to each other. An LCD comprises a liquid crystal panel(102), a transparent board, the first polarizing plate(104) and the second polarizing plate1(08). The liquid crystal panel has the first and second substrates(102a,102b) which are bonded together. A liquid crystal layer is inserted between the substrates, and the transparent board is attached to the first substrate. The first polarizing plate is attached to the transparent board. The second polarizing plate is attached to the second substrate. The LCD also comprises a sealant to bond the transparent board with the first substrate. The first polarizing plate is attached to the frond or rear side of the transparent board.

Description

Liquid crystal display and its manufacturing method {LIQUID CRYSTAL DISPLAY AND FABRICATING METHOD THEREOF}

1 is a perspective view showing a conventional liquid crystal display device.

2 is a cross-sectional view showing in detail the structure of the polarizing plate shown in FIG.

3 is a perspective view illustrating a liquid crystal display according to a first embodiment of the present invention.

4A to 4C are diagrams illustrating a method of manufacturing the liquid crystal display device illustrated in FIG. 3.

5 is a cross-sectional view illustrating another example of the liquid crystal display shown in FIG. 3.

6 is a cross-sectional view of a liquid crystal display according to a second exemplary embodiment of the present invention.

FIG. 7 is a cross-sectional view showing another example of the liquid crystal display shown in FIG. 6; FIG.

8 is a cross-sectional view of a liquid crystal display according to a third exemplary embodiment of the present invention.

9 is a cross-sectional view showing another example of the liquid crystal display shown in FIG. 8;

10 is a cross-sectional view of a liquid crystal display according to a fourth exemplary embodiment of the present invention.

FIG. 11 is a cross-sectional view illustrating another example of the liquid crystal display shown in FIG. 10.

<Description of Symbols for Main Parts of Drawings>

102: liquid crystal panel 104, 108: polarizing plate

106, 112, 114: transparent plate 110, 116, 118: sealant

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device and a method of manufacturing the same, which can prevent light leakage and improve contrast.

In general, the liquid crystal display device has a trend that the application range is gradually widened due to the characteristics such as light weight, thin, low power consumption. In accordance with this trend, liquid crystal displays are used in office automation equipment, audio / video equipment, and the like.

In the LCD, transmittance is adjusted according to signals applied to a plurality of control switches arranged in a matrix to display a desired image on a screen. Such a liquid crystal display device includes a polarizing plate for polarizing light from a backlight unit.

Referring to FIG. 1, a conventional liquid crystal display device includes a liquid crystal panel 2 and upper and lower polarizers 4 and 6 positioned on the front and rear surfaces of the liquid crystal panel 2, respectively.

The liquid crystal panel 2 is composed of a color filter array substrate 2a and a thin film transistor array substrate 2b bonded together with a liquid crystal interposed therebetween. The color filter array substrate 2a is composed of a color filter and a black matrix formed on the upper substrate. The thin film transistor array substrate 2b is composed of a signal line and a thin film transistor formed on the lower substrate.

The upper polarizer 4 is attached to the front surface of the color filter array substrate 2a to polarize the light emitted from the liquid crystal panel 2. The lower polarizer 6 is attached to the rear surface of the thin film transistor array substrate 2b to polarize the light emitted from the backlight unit. To this end, a transmission axis is formed in each of the two polarizing plates 4 and 6, and the liquid crystal panel 2 is disposed so that the transmission axis Y of the upper polarizing plate 4 and the transmission axis X of the lower polarizing plate 6 are perpendicular to each other. It is attached to the front and back of the respectively.

The structure of the upper and lower polarizers 4 and 6 will be described in detail with reference to FIG. 2 as follows.

The upper polarizing plate 4 has a polyvinyl alcohol (PVA) film 4c, which is a polarizing film, and upper and lower triacetate celluloses supporting the PVA film 4c. The " TAC " films 4d and 4b, an adhesive 4a formed on the back side of the upper TAC film 4d and attached to the liquid crystal panel 2, and formed on the upper TAC film 4d. It consists of a functional film 4e and the protective film 4f formed in the whole surface of the functional film 4e.

The PVA film 4c controls the amount of light transmitted according to the degree of polarization of incident light.

The upper and lower TAC films 4d and 4b are formed with the PVA film 4c therebetween to support the PVA film 4c.

The adhesive 4a attaches the upper polarizer 4 to the entire liquid crystal panel 2.

The functional film 4e has functions such as glare, anti-reflective, anti-scrrach, and the like.

The protective film 4f serves to prevent shrinkage of the upper polarizing plate 4 and to protect the upper polarizing plate 4.

On the other hand, the lower polarizing plate 6 is formed on the entire surface of the PVA film 6c, the upper and lower TAC films 6b and 6d supporting the PVA film 6c, and the upper TAC film 6b, and thus the liquid crystal panel 2 is formed. It consists of the adhesive agent 6a for sticking on it, the functional film 6e formed on the lower TAC film 6d, and the protective film 6f formed in the functional film 6e back surface. Here, the description of the role of the same components as the upper polarizer 4 among the components of the lower polarizer 6 will be omitted. The functional film 6e of the lower polarizing plate 6 has functions such as anti-glare and anti-statc.

In the upper and lower polarizing plates 4 and 6 having the above-described structure, a plurality of functional films are formed to have a thickness of about 100 to 300 μm and are flexible.

The upper and lower polarizers 4 and 6 are disposed on the liquid crystal panel 2 so that the transmission axis Y of the upper polarizer 4 and the transmission axis X of the lower polarizer 6 are orthogonal to each other. When the driving voltage is not applied to the liquid crystal panel 2, white is implemented, whereas when the driving voltage is applied, black is implemented. Here, since the contrast is the ratio of the black luminance to the white luminance, the black luminance greatly affects the contrast.

The upper and lower polarizing plates 4 and 6 having the above-described structure are laminated and attached to the liquid crystal panel 2. At this time, the transmission axis (Y) of the upper polarizing plate 4 and the transmission axis (X) of the lower polarizing plate 6 should be orthogonal to each other. However, when the polarizing plates 4 and 6 are cut, they are not cut parallel to the transmission axis of the polarizing plates 4 and 6 or due to process errors when attaching the polarizing plates 4 and 6 to the liquid crystal panel 2. The transmission axes of the polarizing plates 4 and 6 may be attached so as not to be perpendicular to each other. Accordingly, in the case where light leakage is generated to implement black luminance, the problem of deterioration of contrast due to failure to implement black luminance appears.

Accordingly, an object of the present invention is to provide a liquid crystal display device which can prevent light leakage and improve contrast by arranging the transmission axis of the polarizing plate at right angles.

In order to achieve the above object, a liquid crystal display device according to an embodiment of the present invention comprises a liquid crystal panel having a first substrate and a second substrate bonded to each other via a liquid crystal layer; A transparent plate attached to the first substrate; A first polarizing plate attached to the transparent plate material; And a second polarizing plate attached to the second substrate.

The liquid crystal display further includes a sealant for bonding the transparent plate and the first substrate together.

The first polarizing plate is attached to any one surface of the front and back of the transparent plate material.

The space between the transparent plate member and the first substrate sealed by the sealant is in a vacuum state.

The liquid crystal display further includes a liquid filled in a space between the transparent plate member sealed by the sealant and the first substrate.

The liquid contains glycerin.

The transparent plate includes a glass.

According to another exemplary embodiment of the present invention, a liquid crystal display includes: a liquid crystal panel having first and second substrates bonded to each other with a liquid crystal layer interposed therebetween; A first transparent plate member attached to the first substrate; A second transparent plate member attached to the second substrate; A first polarizing plate attached to the first transparent plate material; And a second polarizing plate attached to the second transparent plate material.

The liquid crystal display device may include a first sealant for bonding the first transparent plate member to the first substrate; And a second sealant for bonding the second transparent plate member and the second substrate together.

The first polarizing plate is attached to any one of a front surface and a rear surface of the first transparent plate material, and the second polarizing plate is attached to any one of a front surface and a rear surface of the second transparent plate material.

At least one of the space between the first transparent plate member and the first substrate sealed by the first sealant and the space between the second transparent plate member and the second substrate sealed by the second sealant is vacuum It is a state.

The liquid crystal display device may include a space between the first transparent plate member sealed by the first sealant and the first substrate, and a space between the second transparent plate member sealed by the second sealant and the second substrate. It further comprises a liquid filled in at least one.

Method of manufacturing a liquid crystal display device according to an embodiment of the present invention comprises the steps of attaching a first polarizing plate to a transparent plate; Applying a sealant to any one of the transparent plate and the first substrate; Opposing the transparent substrate and the first substrate with the sealant therebetween; Rotating the transparent plate member on the first substrate to find a fixed position of the first polarizing plate; And hardening the sealant at a fixed position of the first polarizing plate to bond the transparent plate member and the first substrate.

Method of manufacturing a liquid crystal display device according to another embodiment of the present invention comprises the steps of attaching the first polarizing plate to the first transparent plate material; Attaching a second polarizing plate to the second transparent plate; Applying a first sealant to any one of the first transparent plate member and the first substrate; Opposing the first transparent plate member and the first substrate with the first sealant therebetween; Rotating the first transparent plate member on the first substrate to find a fixed position of the first polarizing plate; Bonding the first transparent plate member to the first substrate by curing the first sealant at a fixed position of the first polarizing plate; Applying a second sealant to any one of the second transparent plate member and the second substrate; Opposing the second transparent plate member and the second substrate with the second sealant therebetween; Rotating the second transparent plate member on the second substrate to find a fixed position of the second polarizing plate; And curing the second sealant at a fixed position of the second polarizing plate to bond the second transparent plate member to the second substrate.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 3 to 10.

Referring to FIG. 3, the liquid crystal display according to the first exemplary embodiment of the present invention attaches the transparent plate member 106 having the upper polarizing plate 104 to the front surface of the liquid crystal panel 102 and the liquid crystal panel 102. The lower polarizer 108 is attached to the rear surface.

The liquid crystal panel 102 includes a color filter array substrate 102a and a thin film transistor array substrate 102b bonded together with a liquid crystal interposed therebetween. The color filter array substrate 102a is composed of a color filter and a black matrix formed on the upper substrate. The thin film transistor array substrate 102b includes a signal line and a thin film transistor formed on the lower substrate.

The upper polarizing plate 104 is attached to the front surface of the transparent plate 106 to polarize the light emitted from the liquid crystal panel 102.

The lower polarizer 108 is attached to the rear surface of the thin film transistor array substrate 102b to polarize the light emitted from the backlight unit (not shown).

Referring to the manufacturing method of the liquid crystal display, as shown in FIG. 4A, the upper polarizer 104 is attached to the transparent plate member 106, and the lower polarizer 108 is attached to the rear surface of the liquid crystal panel 102. Thereafter, as illustrated in FIG. 4B, the sealant 110 is dispensed along the edge of the front surface of the color filter array substrate 102a of the liquid crystal panel 102. Here, the sealant may be dispensed on the back surface of the transparent plate 106. Next, while rotating the transparent plate member 106 with the upper polarizing plate 104 finely, the position at which the transmission axes of the upper polarizing plate 104 and the lower polarizing plate 108 are orthogonal is selected so that the transparent plate member 106 is a liquid crystal. Place it on the panel 102. Subsequently, ultraviolet rays (UV) are irradiated to cure the sealant 110 to bond the transparent plate 106 and the liquid crystal panel 102 as shown in FIG. 4C.

The transparent plate member 106 may be implemented as a glass binder, and may be replaced as long as the transparent plate member has a hardness enough to maintain a plate state other than that. For example, the transparent plate 106 may be replaced with a transparent plastic.

Thus, the sealant 110 is used to attach the transparent plate 106 to the liquid crystal panel 102. The sealant 110 and the liquid crystal panel 102 are used by the sealant 110 as shown in FIG. 4C. There is a space between). This space is a vacuum state, in which light is refracted by the difference in refractive index, and the input light travels along the A path, and the optical path is distorted. This is because the refractive index of the vacuum is 1 and the refractive indexes of the transparent plate material 106 and the polarizing plates 104 and 108 are 1.5. Here, since the refractive indices of the transparent plate material 106 and the polarizing plates 104 and 108 are almost the same, the straightness of light is maintained.

In order to prevent such a distortion of light, a liquid having a refractive index of about 1.5 having a similar refractive index in the space between the transparent plate member 106 and the liquid crystal panel 102 is similar to the transparent plate member 106 and the polarizing plates 104 and 108. To fill. Filling the liquid in this manner can prevent the light path distortion phenomenon by maintaining the straightness as the light path B. At this time, glycerin (glycerin) may be used as the applicable liquid. This glycerin has a refractive index of 1.473. The liquid is not limited to glycerin, and any liquid can be used as long as the refractive indexes of the transparent plate 106 and the polarizing plates 104 and 108 are similar and transparent. If the refractive index varies, it must be replaced with a transparent medium of similar refractive index.

As such, when the upper polarizing plate 104 is attached on the transparent plate material 106, it is easier to find a point at which two transmission axes of the upper polarizing plate 106 and the lower polarizing plate 108 are orthogonal to each other. Accordingly, the present invention not only prevents the conventional light leakage phenomenon, but also improves the contrast because the black luminance due to the light leakage is lowered.

The upper polarizing plate 104 may be formed on the back surface of the transparent plate 106 as shown in FIG.

Referring to FIG. 6, in the liquid crystal display according to the second exemplary embodiment, the upper polarizing plate 104 is attached to the front of the liquid crystal panel 102, and the lower polarizing plate 108 is attached to the rear surface of the transparent plate 106. Let's do it. Here, the lower polarizer 108 may be formed on the entire transparent plate material 106 as shown in FIG.

The upper polarizer 104 is attached to the front surface of the color filter array substrate 102b to polarize the light emitted from the liquid crystal panel 102.

The lower polarizer 108 is attached to the rear surface of the transparent plate 106 to polarize the light emitted from the backlight unit (not shown).

Looking at the manufacturing method of such a liquid crystal display, first, the upper polarizing plate 104 is attached to the front of the liquid crystal panel 102, the lower polarizing plate 108 is attached to the back of the transparent plate material 106. Thereafter, the sealant 110 is dispensed along the edge of the rear surface of the thin film transistor array substrate 102b of the liquid crystal panel 102. Here, the sealant 110 may be dispensed on the entire surface of the transparent plate 106. Next, while rotating the transparent plate 106 with the lower polarizing plate 108 finely, the liquid crystal panel 102 is made transparent by selecting a position at which the transmission axes of the upper polarizing plate 104 and the lower polarizing plate 108 are orthogonal to each other. It is put on the board | plate material 106. Subsequently, the transparent plate member 106 and the liquid crystal panel 102 are bonded together by irradiating ultraviolet (UV) light to cure the sealant 110.

The sealant 110 is used to attach the transparent plate 106 and the liquid crystal panel 102 to each other, and the sealant 110 creates a space between the transparent plate 106 and the liquid crystal panel 102. This space is in a vacuum state, in which light is refracted by the difference in refractive index, and the optical path is distorted. This is because the refractive index of the vacuum is 1 and the refractive indexes of the transparent plate material 106 and the polarizing plates 104 and 108 are 1.5. Here, since the refractive indices of the transparent plate material 106 and the polarizing plates 104 and 108 are almost the same, the straightness of light is maintained.

In order to prevent such a distortion of light, a liquid having a refractive index of about 1.5 having a similar refractive index in the space between the transparent plate member 106 and the liquid crystal panel 102 is similar to the transparent plate member 106 and the polarizing plates 104 and 108. To fill. Filling the liquid in this manner can prevent the light path distortion phenomenon by maintaining the straightness as the light path B. At this time, glycerin (glycerin) may be used as the applicable liquid. This glycerin has a refractive index of 1.473.

As such, when the upper polarizing plate 104 is attached on the transparent plate material 106, it is easier to find a point at which two transmission axes of the upper polarizing plate 106 and the lower polarizing plate 108 are orthogonal to each other. Accordingly, the present invention not only prevents the conventional light leakage phenomenon, but also improves the contrast because the black luminance due to the light leakage is lowered.

Referring to FIG. 8, in the liquid crystal display according to the third exemplary embodiment, the first transparent plate 112 having the upper polarizing plate 104 attached to the front surface is attached to the front surface of the liquid crystal panel 102, and the lower polarizing plate is attached. A second transparent plate member 114 having 108 attached to the rear surface is attached to the rear surface of the liquid crystal panel 102. Here, the upper polarizing plate 104 may be formed on the rear surface of the first transparent plate member 112 as shown in FIG.

The upper polarizer 104 is attached to the front surface of the first transparent plate member 112 to polarize the light emitted from the liquid crystal panel 102.

The lower polarizer 108 is attached to the rear surface of the second transparent plate member 114 to polarize the light emitted from the backlight unit (not shown).

Looking at the manufacturing method of such a liquid crystal display, first, the upper polarizing plate 104 is attached to the front of the first transparent plate member 112, and the lower polarizing plate 108 is attached to the rear surface of the second transparent plate member 114. Thereafter, the sealants 116 and 118 are dispensed onto the front and rear surfaces of the liquid crystal panel 102. Here, the sealant may be dispensed on the back surface of the first transparent plate material 112, or may be dispensed on the entire surface of the second transparent plate material 114. Next, the upper polarizer 104 and the lower polarizer 108 are finely rotated while the first transparent plate member 112 having the upper polarizer 104 attached thereto and the second transparent plate member 114 having the lower polarizer 108 attached thereto are finely rotated. The first and second transparent plate members 112 and 114 are placed on the liquid crystal panel 102 by selecting a position at which the transmission axes of the cross perpendicular to each other are selected. Subsequently, ultraviolet rays (UV) are irradiated to cure the sealants 116 and 118 to bond the first and second transparent plate materials 112 and 114 to the liquid crystal panel 102.

Thus, the sealants 116 and 118 are used to attach the first and second transparent plates 112 and 114 onto the liquid crystal panel 102. The sealants 116 and 118 allow the first transparent plate 112 to be attached. ) And a space between the liquid crystal panel 102 and the second transparent plate member 114 and the liquid crystal panel 102. This space is a vacuum state, in which light is refracted by the difference in refractive index, and the input light travels along the A path, and the optical path is distorted. This is because the refractive index of the vacuum is 1 and the refractive indices of the first and second transparent plate materials 112 and 114 and the polarizing plates 104 and 108 are 1.5. Here, since the refractive indices of the first and second transparent plate materials 112 and 114 and the polarizing plates 104 and 108 are almost the same, the straightness of the light is maintained.

In order to prevent such distortion of light, the refractive indexes of the transparent plates 112 and 114 and the polarizers 104 and 108 have a refractive index of about 1.5, which is similar in space between the transparent plates 112 and 114 and the liquid crystal panel 102. Fill the fluid. Filling the liquid in this manner can prevent the light path distortion phenomenon by maintaining the straightness as the light path B. At this time, glycerin (glycerin) may be used as the applicable liquid. This glycerin has a refractive index of 1.473.

As such, when the upper and lower polarizers 104 and 108 are attached to the transparent plate materials 112 and 114, it is easier to find a point at which two transmission axes of the upper polarizer 106 and the lower polarizer 108 are orthogonal than before. . Accordingly, the present invention not only prevents the conventional light leakage phenomenon, but also improves the contrast because the black luminance due to the light leakage is lowered.

Referring to FIG. 10, in the liquid crystal display according to the fourth exemplary embodiment, the first transparent plate member 112 having the upper polarizer 104 attached to the front surface is attached to the front surface of the liquid crystal panel 102, and the lower polarizer plate is attached. A second transparent plate member 114 having 108 attached to the front surface is attached to the rear surface of the liquid crystal panel 102. Here, the upper polarizer 104 may be attached to the rear surface of the first transparent plate member 112 as shown in FIG.

The upper polarizer 104 is attached to the front surface of the first transparent plate member 112 to polarize the light emitted from the liquid crystal panel 102.

The lower polarizer 108 is attached to the front surface of the second transparent plate 114 to polarize the light emitted from the backlight unit (not shown).

Looking at the manufacturing method of such a liquid crystal display, first, the upper polarizing plate 104 is attached to the front of the first transparent plate member 112, and the lower polarizing plate 108 is attached to the front of the second transparent plate member 114. Thereafter, the sealants 116 and 118 are dispensed onto the front and rear surfaces of the liquid crystal panel 102. Here, the sealant may be dispensed on the rear surface of the first transparent plate material 112, or may be dispensed on the entire surface of the lower polarizer 108. Next, in the inspection process, the upper polarizing plate 104 and the lower polarizing plate are finely rotated while finely rotating the first transparent plate 112 having the upper polarizing plate 104 and the second transparent plate having the lower polarizing plate 108 attached thereto. The first and second transparent plate members 112 and 114 are placed on the liquid crystal panel 102 by selecting a position at which the transmission axis of 108 is orthogonal to each other. Next, the present invention bonds the first and second transparent plate members 112 and 114 to the liquid crystal panel 102 by curing the sealants 116 and 118 by irradiating ultraviolet (UV) light.

Thus, the sealants 116 and 118 are used to attach the first and second transparent plates 112 and 114 onto the liquid crystal panel 102. The sealants 116 and 118 allow the first transparent plate 112 to be attached. ) And a space between the lower polarizer 108 and the liquid crystal panel 102. This space is a vacuum state, in which light is refracted by the difference in refractive index, and the input light travels along the A path, and the optical path is distorted. This is because the refractive index of the vacuum is 1 and the refractive indices of the first and second transparent plate materials 112 and 114 and the polarizing plates 104 and 108 are 1.5. Here, since the refractive indices of the first and second transparent plate materials 112 and 114 and the polarizing plates 104 and 108 are almost the same, the straightness of the light is maintained.

In order to prevent such distortion of light, the refractive indexes of the transparent plates 112 and 114 and the polarizers 104 and 108 have a refractive index of about 1.5, which is similar in space between the transparent plates 112 and 114 and the liquid crystal panel 102. Fill the fluid. Filling the liquid in this manner can prevent the light path distortion phenomenon by maintaining the straightness as the light path B. At this time, glycerin (glycerin) may be used as the applicable liquid. This glycerin has a refractive index of 1.473.

As such, when the upper and lower polarizers 104 and 108 are attached to the transparent plate materials 112 and 114, it is easier to find a point at which two transmission axes of the upper polarizer 106 and the lower polarizer 108 are orthogonal than before. . Accordingly, the present invention not only prevents the conventional light leakage phenomenon, but also improves the contrast because the black luminance due to the light leakage is lowered.

As described above, in the liquid crystal display device and the manufacturing method thereof according to the present invention, it is easy to find an orthogonal point between the upper polarizing plate and the lower polarizing plate by attaching the polarizing plate to the transparent plate material. Accordingly, the liquid crystal display and the manufacturing method thereof according to the present invention can prevent the conventional light leakage phenomenon. In addition, the liquid crystal display according to the present invention and the method of manufacturing the same can be improved because the black brightness due to light leakage is lowered.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (28)

A liquid crystal panel having first and second substrates bonded together with a liquid crystal layer interposed therebetween; A transparent plate attached to the first substrate; A first polarizing plate attached to the transparent plate material; And And a second polarizing plate attached to the second substrate. The method of claim 1, And a sealant for bonding the transparent plate member and the first substrate together. The method of claim 1, The first polarizing plate is attached to any one surface of the front and rear of the transparent plate material. The method of claim 2, And the space between the transparent plate member and the first substrate sealed by the sealant is in a vacuum state. The method of claim 2, And a liquid filled in a space between the transparent plate member sealed by the sealant and the first substrate. The method of claim 5, wherein The liquid crystal display device, characterized in that containing glycerin (glycerin). The method of claim 1, The transparent plate material comprises a glass liquid crystal display device. A liquid crystal panel having first and second substrates bonded together with a liquid crystal layer interposed therebetween; A first transparent plate member attached to the first substrate; A second transparent plate member attached to the second substrate; A first polarizing plate attached to the first transparent plate material; And And a second polarizing plate attached to the second transparent plate material. The method of claim 8, A first sealant for bonding the first transparent plate member to the first substrate; And And a second sealant for bonding the second transparent plate member and the second substrate together. The method of claim 8, And the first polarizing plate is attached to any one of a front surface and a rear surface of the first transparent plate material. The method of claim 8, And the second polarizing plate is attached to any one of a front surface and a rear surface of the second transparent plate material. The method of claim 9, At least one of the space between the first transparent plate member and the first substrate sealed by the first sealant and the space between the second transparent plate member and the second substrate sealed by the second sealant is vacuum Liquid crystal display device characterized in that the state. The method of claim 12, Filling in at least one of a space between the first transparent plate member and the first substrate sealed by the first sealant and a space between the second transparent plate member and the second substrate sealed by the second sealant The liquid crystal display device further comprises a liquid. The method of claim 13, The liquid crystal display device, characterized in that containing glycerin (glycerin). The method of claim 8, The transparent plate material comprises a glass liquid crystal display device. In the manufacturing method of a liquid crystal display device including a liquid crystal panel having a first and a second substrate bonded to each other via a liquid crystal layer, Attaching a first polarizing plate to the transparent plate; Applying a sealant to any one of the transparent plate and the first substrate; Opposing the transparent substrate and the first substrate with the sealant therebetween; Rotating the transparent plate member on the first substrate to find a fixed position of the first polarizing plate; And And hardening the sealant at a fixed position of the first polarizing plate to bond the transparent plate member and the first substrate to each other. The method of claim 16, The first polarizing plate is attached to any one of the front and rear surfaces of the transparent plate material manufacturing method of the liquid crystal display device. The method of claim 16, The space between the transparent plate member and the first substrate sealed by the sealant is a vacuum state. The method of claim 16, And a liquid filled in a space between the transparent plate member sealed by the sealant and the first substrate. The method of claim 19, The liquid is a manufacturing method of a liquid crystal display device comprising glycerin (glycerin). The method of claim 16, The transparent plate material manufacturing method of the liquid crystal display device characterized in that it comprises a glass. In the manufacturing method of a liquid crystal display device including a liquid crystal panel having a first and a second substrate bonded to each other via a liquid crystal layer, Attaching a first polarizing plate to the first transparent plate; Attaching a second polarizing plate to the second transparent plate; Applying a first sealant to any one of the first transparent plate member and the first substrate; Opposing the first transparent plate member and the first substrate with the first sealant therebetween; Rotating the first transparent plate member on the first substrate to find a fixed position of the first polarizing plate; Bonding the first transparent plate member to the first substrate by curing the first sealant at a fixed position of the first polarizing plate; Applying a second sealant to any one of the second transparent plate member and the second substrate; Opposing the second transparent plate member and the second substrate with the second sealant therebetween; Rotating the second transparent plate member on the second substrate to find a fixed position of the second polarizing plate; And And hardening the second sealant at a fixed position of the second polarizing plate to bond the second transparent plate member and the second substrate to each other. The method of claim 22, The first polarizing plate is attached to any one of the front surface and the rear surface of the first transparent plate material manufacturing method of the liquid crystal display device. The method of claim 22, The second polarizing plate is attached to any one of the front surface and the rear surface of the second transparent plate material manufacturing method of the liquid crystal display device. The method of claim 22, At least one of the space between the first transparent plate member and the first substrate sealed by the first sealant and the space between the second transparent plate member and the second substrate sealed by the second sealant is vacuum A manufacturing method of a liquid crystal display device, characterized in that the state. The method of claim 22, Filling in at least one of a space between the first transparent plate member and the first substrate sealed by the first sealant and a space between the second transparent plate member and the second substrate sealed by the second sealant A liquid crystal display device, characterized in that it further comprises a liquid. The method of claim 26, The liquid is a manufacturing method of a liquid crystal display device comprising glycerin (glycerin). The method of claim 26, The transparent plate material manufacturing method of the liquid crystal display device characterized in that it comprises a glass.

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