KR101876567B1 - Liquid crystal display device and method of manfacturing the same - Google Patents

Abstract

The present invention relates to a liquid crystal display device and a method of manufacturing the same, and more particularly, to a liquid crystal display device and a method of manufacturing the same, including: a first substrate having a plurality of pixels divided into a light transmitting portion and a light reflecting portion; A reflective electrode disposed on the first substrate of the light reflection portion; A transparent electrode disposed on the first substrate of the light transmitting portion; A second substrate corresponding to the first substrate; A color filter layer formed on an inner surface of the second substrate; A common electrode disposed on an inner surface of one of the first and second substrates; A liquid crystal layer interposed between the first and second substrates; And a retarder layer disposed on an inner surface of the substrate of either the first or second substrate including the light transmitting portion and the light reflecting portion and delaying the phase of the light transmitted through the light reflecting portion by? / 4 And a method of manufacturing the same.

Description

[0001] The present invention relates to a liquid crystal display device and a manufacturing method thereof,

The present invention relates to a liquid crystal display device and a method of manufacturing the same, and more particularly, to a transflective liquid crystal display device having a single cell gap and a method of manufacturing the same.

In general, a liquid crystal display device is widely used in the display industry field because it can be driven not only at a low power consumption but also at a thin thickness.

A liquid crystal display device has been developed for a transflective liquid crystal display device having both advantages of a transmissive liquid crystal display device and a reflective liquid crystal display device. That is, the transflective liquid crystal display device can secure a high contrast as in the transmissive liquid crystal display device, and can reduce the power consumption due to the adoption of external light as in the reflection type liquid crystal display device.

In such a transflective liquid crystal display device, a compensation film or a cell gap difference is provided in order to match the polarized states of the reflective portion and the transmissive portion.

However, when a compensation film is used, a different compensation film must be attached to the reflective portion and the transmissive portion. In addition, when the cell gap difference between the reflective portion and the transmissive portion is set, the alignment defect of the liquid crystal may occur and the manufacturing process may become complicated.

Accordingly, the present invention has been made to solve the problems that may occur in a liquid crystal display device and a manufacturing method thereof, and more particularly, to a liquid crystal display device and a method of manufacturing the same which are capable of realizing a single cell gap by using a retarder layer, And a method of manufacturing the liquid crystal display device.

A liquid crystal display device of a first solution means according to the present invention is provided. The liquid crystal display device includes a first substrate having a plurality of pixels divided into a light transmitting portion and a light reflecting portion; A reflective electrode disposed on the first substrate of the light reflection portion; A transparent electrode disposed on the first substrate of the light transmitting portion; A second substrate corresponding to the first substrate; A color filter layer formed on an inner surface of the second substrate; A common electrode disposed on an inner surface of one of the first and second substrates; A liquid crystal layer interposed between the first and second substrates; And a retarder layer disposed on an inner surface of the substrate of either the first or second substrate including the light transmitting portion and the light reflecting portion and delaying the phase of the light transmitted through the light reflecting portion by? / 4 can do.

A second method of manufacturing a liquid crystal display device according to the present invention is provided. The manufacturing method includes: providing a first substrate and a second substrate having a plurality of pixels partitioned by a light transmitting portion and a light reflecting portion; Forming a reflective electrode disposed on the first substrate of the light reflection part and a transparent electrode disposed on the first substrate of the light transmission part, and forming a color filter layer and a common electrode on the second substrate; Forming a retarder layer on the inner surface of one of the first and second substrates including the light transmitting portion and the light reflecting portion to retard the phase of light transmitted through the light reflecting portion by? / 4; And

And bonding the first and second substrates with liquid crystal interposed between the first and second substrates.

The liquid crystal display device according to the embodiment of the present invention can form a single cell gap of the light transmitting portion and the light reflecting portion by having the retarder layer which can partially realize the phase difference through the selective polarized UV irradiation, It is possible not only to prevent the orientation defects but also to prevent the front optical characteristics from being deteriorated due to the cell gap variation.

Further, the liquid crystal display device according to the embodiment of the present invention can match the polarization characteristics at the reflective portion and the transmissive portion through one retarder layer, thereby simplifying the manufacturing cost and the manufacturing process.

1 is a cross-sectional view of a liquid crystal display device according to a first embodiment of the present invention.
2 is a cross-sectional view of a liquid crystal display device according to a second embodiment of the present invention.
3 to 6 are cross-sectional views illustrating a manufacturing process of a liquid crystal display device according to a third embodiment of the present invention.
7 is a graph showing a change in the refractive index of the retarder layer according to UV irradiation.
8 is a graph showing the retardation change of the retarder layer with the curing temperature and the curing time.

Embodiments of the present invention will be described in detail with reference to the drawings of a liquid crystal display device. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention.

Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the size and thickness of an apparatus may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

1 is a cross-sectional view of a liquid crystal display device according to a first embodiment of the present invention.

1, a liquid crystal display according to a first embodiment of the present invention includes a first substrate 110, a reflective electrode 120, a transparent electrode 130, a second substrate 210, a color filter layer 220, A liquid crystal layer 300, and a retarder layer 140. [

Specifically, the first and second substrates 110 and 210 may include a plurality of pixels partitioned by the light transmitting portion TA and the light reflecting portion RA, respectively. At this time, the first and second substrates 110 and 210 may be attached to each other such that the pixels of the first substrate 110 and the pixels of the second substrate 210 correspond to each other.

Although not shown in the figure, each pixel of the first substrate 110 may be defined by a gate wiring and a data wiring intersecting with each other. A thin film transistor disposed in each pixel and connected to the gate line and the data line may be provided. The thin film transistor includes a gate electrode disposed on the first substrate 110, a gate insulating film disposed on the first substrate 110 including the gate electrode, a semiconductor layer disposed on the gate insulating film corresponding to the gauge electrode, And source and drain electrodes spaced apart from each other. Here, the gate electrode may be connected to the gate wiring, and the source electrode may be electrically connected to the data line. In addition, a protective film covering the thin film transistor and disposed on the first substrate 110 can be further disposed.

The transparent electrode 130 may be disposed on the first substrate 110, for example, a protective film corresponding to the light transmitting portion TA. Here, the transparent electrode 130 is electrically connected to the drain electrode of the thin film transistor, and the liquid crystal can be driven by receiving the voltage by the drive signal of the thin film transistor.

The reflective electrode 120 may be disposed on the first substrate 110, for example, a protective film corresponding to the light reflection portion RA. Here, the transparent electrode 130 may be further extended to the lower or upper portion of the reflective electrode 120. At this time, the reflective electrode 120 may be electrically connected to the drain electrode of the thin film transistor.

In addition, an embossing pattern may be further disposed under the reflective electrode 120. Here, the reflective electrode 120 may have an embossed pattern by an embossing pattern, so that the light reflectance incident from the outside can be increased.

The retarder layer 140 may be disposed on the inner surface of the first substrate 110 including the reflective electrode 120 and the transparent electrode 130. That is, the retarder layer 140 may be disposed on the light transmitting portion TA and the light reflecting portion RA. Herein, the retarder layer 140 may include a first region 141 corresponding to the light reflection portion RA and a second region 142 corresponding to the light transmission portion TA. At this time, the first region 141 may have a phase delay of? / 4. Also, the second region 142 does not cause a phase delay.

As the liquid crystal in the light reflection portion RA has a phase delay of? / 4 and the retarder layer 140 in the first region 141 generates a phase delay of? / 4, 2 light transmitted through the substrates 110 and 210 may have a phase delay of? / 2. Further, the liquid crystal in the light transmitting portion TA can have a phase delay of? / 2. Accordingly, the phase delays of the light reflection portion RA and the light transmission portion TA can be generated in the same manner. That is, even if the cell gap of the light transmitting portion TA is the same as the cell gap of the light reflecting portion RA, the first region 141 of the retarder layer 140 can reflect light, The polarization states of the light transmitting portion RA and the light transmitting portion TA can be the same.

The retardation of the retarder layer 140 can be controlled through the thickness and the refractive index of the retarder layer 140. For example, when the retarder 140 has a retardation of 120 nm, the thickness of the retarder layer 140 for phase difference development may be in the range of 0.5 to 10 占 퐉. Further, the refractive index of the retarder layer 140 may be in the range of 0.02 to 0.14. At this time, the thickness of the retarder layer 140 is preferably 1.2 占 퐉, and the refractive index may be 0.1.

The retarder layer 140 may include a photoreactive monomer aligned in the vertical or horizontal direction of the polarization direction by polarized UV and a monomer having high refractive index characteristics. Accordingly, since the retarder layer 140 exhibits a refractive index in a molecular arrangement by polarized UV, it is not necessary to form a separate alignment film under the retarder layer 140.

The refractive index of the first region 141 may be larger than the refractive index of the second region 142 as the retarder 140 expands the phase difference in the first region 141.

In the embodiment of the present invention, the retarder layer 140 is disposed on the reflective electrode 120 and the transparent electrode 130, but the present invention is not limited thereto. For example, the retarder layer 140 may be disposed on the inner surface of the second substrate 210, such as above the color filter layer, over the overcoat layer, and over the common electrode.

On the other hand, a color filter layer and a black matrix layer may be further disposed on the second substrate 210 facing the first substrate 110.

A common electrode 230 for forming an electric field for driving the liquid crystal together with the reflective electrode 120 and the transparent electrode 130 may be further disposed on the color filter layer and the black matrix layer.

In addition, although not shown in the drawing, an overcoat layer may be further disposed between the color filter layer and the black matrix and the common electrode to remove the step between the color filter layer and the black matrix.

In addition, the first and second polarizing films 150 and 240 may be disposed on the outer surfaces of the first and second substrates 110 and 210, respectively. Here, the first and second polarizing films 150 and 240 may have light transmission axes perpendicular to each other.

However, the present invention is not limited to the TN mode liquid crystal display, and a person skilled in the art will understand that the technical structure of the present invention, that is, the retarder layer of a single layer, The technical configuration for matching the polarization states can be sufficiently applied to the IPS mode, the VA mode, the OCB mode, and the ECB mode. Thus, in the embodiment of the present invention, although the common electrode is described as being disposed on the inner surface of the second substrate, the common electrode may be disposed on the inner surface of the first substrate depending on the liquid crystal mode.

Therefore, as in the first embodiment of the present invention, the polarizing characteristics of the light transmitting portion and the light reflecting portion can be made to coincide with each other by using the retarder capable of partially implementing the phase difference. That is, the liquid crystal display device can be formed with a single cell gap. Thus, it is possible not only to prevent the liquid crystal alignment defect, but also to prevent the front optical property due to the cell gap variation from being deteriorated.

Also, the liquid crystal display device according to the embodiment of the present invention can match the polarization characteristics at the reflective portion and the transmissive portion through the retarder layer formed as a single layer, thus simplifying the manufacturing cost and the manufacturing process.

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

Here, the liquid crystal display device according to the first embodiment has the same technical structure as the liquid crystal display device according to the first embodiment except that the compensation film is further provided. Accordingly, the first embodiment and the repeated description will be omitted, The same reference numerals will be assigned to the repeated technical constructions.

2, a liquid crystal display according to a second exemplary embodiment of the present invention includes a first substrate 110 having a plurality of pixels partitioned by a light transmitting portion TA and a light reflecting portion RA, A transparent electrode 130 disposed on the first substrate 110 of the light transmitting portion TA, and a reflective electrode 120 disposed on the first substrate 110 of the first substrate RA, A color filter layer formed on the inner surface of the second substrate 210, a common electrode 230 disposed on the inner surface of one of the first and second substrates 110 and 210, The liquid crystal layer 300 interposed between the first and second substrates 110 and 210 and the first and second substrates 110 and 210 including the light transmitting portion TA and the light reflecting portion RA And a retarder layer 140 disposed on the inner surface of the substrate of the light reflection part RA and delaying the phase of the light transmitted through the light reflection part RA by? / 4.

Here, first and second polarizing films 150 and 240 having optical axes perpendicularly intersecting each other may be attached to inner surfaces of the first and second substrates 110 and 210, respectively.

The retardation film 260 is formed by sequentially laminating a λ / 2 wavelength retardation compensation film 260 between the second substrate 210 and the second polarizing film 240 and a λ / 4 wavelength retardation film 260 disposed on the λ / A compensation film 250 may be further provided. Here, the light transmission axis of the? / 2 wavelength retardation compensation film 260 may have a range of 0 to 45 degrees with respect to the light transmission axis of the second polarizing film 240. The light transmission axis of the? / 4 wavelength retardation compensation film 250 may have a range of 45 to 90 degrees with respect to the light transmission axis of the second polarizing film 240.

Here, the? / 2 wavelength retardation compensation film 260 and the? / 4 wavelength retardation compensation film 250 can prevent a broadband visible light, for example, most virtual light, from transmitting or transmitting through the polarizing plate per wavelength band, Problems can be reduced. That is, the? / 2 wavelength retardation compensation film 260 and the? / 4 wavelength retardation compensation film 250 can improve the contrast ratio of the liquid crystal display device.

In the above description, the? / 2 wavelength retardation compensation film 260 and the? / 4 wavelength retardation compensation film 250 are disposed between the second substrate 210 and the second polarizing film 240. However, And may be disposed on the inner surface of the second substrate 210.

3 to 6 are cross-sectional views illustrating a manufacturing process of a liquid crystal display device according to a third embodiment of the present invention.

Referring to FIG. 3, first and second substrates 110 and 210 are provided in a liquid crystal display device according to an embodiment of the present invention, respectively. Each of the first and second substrates 110 and 210 may include a plurality of pixels divided into a light transmitting portion TA and a light reflecting portion RA.

Here, although not shown in the drawing, gate wirings and data wirings may be formed on the first substrate 110 so as to define pixels and intersect with each other. Further, a thin film transistor electrically connected to the gate wiring and the data wiring may be formed in each pixel. In addition, a protective film may be further formed on the first substrate 110 including the thin film transistor. Further, an embossing pattern may be further formed on the protective film corresponding to the light reflecting portion RA. At this time, the light reflecting portion RA and the light transmitting portion TA are formed to have the same cell gap.

A transparent electrode 130 and a reflective electrode 120 are formed on the first substrate 110 in correspondence with the light transmitting portion TA and the light reflecting portion RA, respectively. Here, the transparent electrode 130 and the reflective electrode 120 may be electrically connected to the thin film transistor. After the transparent electrode 130 is formed on the light transmitting portion TA and the light reflecting portion RA, a reflective conductive material is coated on the transparent electrode 130 of the light reflecting portion RA to form the reflective electrode 120, Can be formed. Here, when an embossing pattern is formed on the light reflection part RA, the reflection electrode 120 may have an embossing pattern by an embossing pattern. In the embodiment of the present invention, the transparent electrode 130 is formed on the entire surface of the light transmission portion TA and the light reflection portion RA and the reflection electrode 120 is formed on the transparent electrode of the light reflection portion RA However, the present invention is not limited to these embodiments, and various methods and forms can be used.

A preliminary retarder layer 140a is formed on the protective film including the inner surface of the first substrate 110 including the light transmitting portion TA and the light reflecting portion RA, for example, the transparent electrode 130 and the reflective electrode 120 . Here, the preliminary retarder layer 140a can be formed through a coating process such as a spray coating process, a T-die coating process, a dip coating process, a spin coating process, a bar coating process, and a screen coating process.

The preliminary retarder layer 140a may include a material capable of developing a retardation through polarized UV and post cure, for example, an acrylic hardening material.

When the retarder 140 to be formed has a retardation of 120 nm, the thickness of the preliminary retarder layer 140a for phase difference development may be in the range of 0.5 to 10 占 퐉.

Referring to FIG. 4, after forming the preliminary retarder layer 140a, a first mask M1 having an opening corresponding to the light reflection portion RA on the preliminary retarder layer 140a is provided. Then, the first UV is irradiated onto the preliminary retarder layer 140a including the first mask M1. The first UV is irradiated only onto the preliminary retarder layer 140a corresponding to the light reflection portion RA due to the first mask M1 so that a first region 141 for delaying the phase of the light by? .

Here, the first UV may be polarized UV to develop a retardation in the preliminary retarder layer 140a.

The retardation of the retarder layer 140 can be controlled through the thickness and the refractive index of the retarder layer 140. Here, the refractive index of the retarder layer 140 can be controlled by the exposure energy of the first UV. That is, the refractive index of the retarder layer 140 may increase with the exposure energy of the first UV. Here, the first UV, i.e., the polarization UV exposure energy, can be performed within the range of 1 mJ to 1000 mJ. This is because when the exposure energy of the first UV is less than 1 mJ, a desired refractive index can not be obtained, whereas when it exceeds 1000 mJ, there is no change in the refractive index.

In addition, the preliminary retarder layer 140a may comprise a photoinitiator. Here, the light source wavelength of the first UV can be selected depending on the kind of the photoinitiator. For example, when the photoinitiator is of the UV A type, the light source wavelength of the first UV may be selected from the range of 315 nm to 400 nm, and when the photoinitiator is of the UV B type, the light source wavelength of the first UV may be selected within the range of 280 nm to 315 nm And when the photoinitiator is UV C type, the light source wavelength of the first UV may be selected in the range of 100 nm to 280 nm.

Referring to Fig. 5, after irradiating the first UV, a second mask M2 having an opening corresponding to the light transmitting portion TA is provided on the preliminary retarder layer 140a. Then, the second UV is irradiated onto the preliminary retarder layer 140a including the second mask M2. Here, the second UV may be unpolarized UV that can be cured without changing the refractive index in the preliminary retarder layer 140a.

In the embodiment of the present invention, the first UV is irradiated and then the second UV is irradiated. However, the present invention is not limited thereto. For example, after the second UV irradiation, the first UV may be irradiated.

After the second UV irradiation, the retarder layer 140 can be formed by performing post cure on the preliminary retarder layer 140a. Post curing can be performed through thermal curing. According to the thermosetting condition, the retardation of the retarder layer 140 of the first region 141 can be adjusted. Here, it can be increased according to the curing temperature of the thermosetting. For example, the heat curing temperature can be optionally selected within the range of 80 to 160 占 폚. In addition, the heat curing time can be selectively performed within a range of 1 minute to 120 minutes. When the temperature is less than the range of the thermosetting temperature or the thermosetting time, the phase difference of the desired retarder layer 140 can not be obtained, and when the temperature exceeds the thermosetting temperature or the thermosetting time range, There was no change.

Referring to FIG. 6, a color filter layer 220 and a black matrix layer are formed on a second substrate 210 separately from the first substrate 110. Then, a common electrode 230 is formed on the color filter layer 220 and the black matrix layer. At this time, an overcoat layer may be further formed between the color filter layer 220 and the black matrix layer and the common electrode 230 to remove a step between the color filter layer 220 and the black matrix layer.

The liquid crystal layer 300 may be formed by injecting liquid crystal between the first and second substrates 110 and 210 and the first and second substrates 110 and 210 may be bonded together to manufacture a liquid crystal display device .

In the embodiment of the present invention, the retarder layer 140 is formed on the inner surface of the first substrate 110, but the present invention is not limited thereto. For example, the retarder layer 140 may be formed on the inner surface of the second substrate 210, for example, above the color filter layer 220, the overcoat layer, and the upper portion of the common electrode 230.

In addition, the method may further include forming first and second polarizing films 150 and 240 having light transmission axes perpendicular to each other on outer surfaces of the first and second substrates 110 and 210, respectively.

Further, before the second polarizing film 240 is formed, a? / 2 wavelength retardation compensation film 260 and a? / 2 retardation compensation film 260 are formed on the outer surface of the second substrate 210 to prevent dispersion by wavelengths to improve the contrast ratio. A four-wavelength retardation compensation film 250 can be further formed. At this time, the light transmission axis of the? / 2 wavelength compensation film 250 has a range of 0 to 45 degrees with respect to the light transmission axis of the second polarizing film 240, and the light of the? / 4 wavelength retardation compensation film 250 The transmission axis may have a range of 45 ° to 90 ° with respect to the light transmission axis of the second polarizing film 240. Here, it is described that the? / 2 wavelength retardation compensation film 260 and the? / 4 wavelength retardation compensation film 250 are formed between the second substrate 210 and the second polarizing film 240, Or may be formed on the inner surface of the second substrate 210.

7 is a graph showing a change in the refractive index of the retarder layer according to UV irradiation.

As shown in FIG. 7, it was confirmed that the refractive index of the retarder layer increases according to the UV irradiation energy.

8 is a graph showing the retardation change of the retarder layer with the curing temperature and the curing time.

As shown in FIG. 8, it was confirmed that the retardation of the retarder layer changes according to the curing temperature and the curing time.

Therefore, as in the embodiment of the present invention, the phase difference of the retarder layer can be controlled through the formation conditions of the retarder layer, that is, the UV irradiation energy, the curing temperature, and the curing time.

Further, polarization characteristics can be made to coincide with each other in the reflective portion and the transmissive portion through one retarder layer, which can simplify the manufacturing cost and the manufacturing process.

In addition, since polarization characteristics can be made to coincide with each other in the reflective portion and the transmissive portion through one retarder layer without providing a difference in cell gap between the transmissive portion and the reflective portion, it is possible to prevent the alignment defect of the liquid crystal due to the difference in cell gap between the transmissive portion and the reflective portion have.

110: first substrate 120: reflective electrode
130: transparent electrode 140: retarder layer
150: first polarizing film 210: second substrate
220: color filter layer 230: common electrode
240: second polarizing film 300: liquid crystal layer

Claims (14)

A first substrate having a plurality of pixels divided into a light transmitting portion and a light reflecting portion;
A reflective electrode disposed on the first substrate of the light reflection portion;
A transparent electrode disposed on the first substrate of the light transmitting portion;
A second substrate corresponding to the first substrate;
A color filter layer formed on an inner surface of the second substrate;
A common electrode disposed on an inner surface of one of the first and second substrates;
A liquid crystal layer interposed between the first and second substrates; And
A retarder layer disposed on an inner surface of the substrate of either the first or second substrate including the light transmitting portion and the light reflecting portion and retarding the phase of light transmitted through the light reflecting portion by? / 4;
Wherein the retarder layer comprises a photoreactive monomer aligned in the vertical or horizontal direction of the polarization direction by polarized UV.
The method according to claim 1,
Wherein the retarder layer has a retardation of 120 nm.
3. The method of claim 2,
Wherein the thickness of the retarder layer is in the range of 0.5 占 퐉 to 10 占 퐉.
3. The method of claim 2,
And the refractive index of the retarder layer in the light reflecting portion has a range of 0.02 to 0.14.
The method according to claim 1,
Wherein the retarder in the region corresponding to the light reflection portion has a larger refractive index than the retarder layer in the region corresponding to the light transmission portion.
The method according to claim 1,
And the cell gap of the light transmitting portion and the cell gap of the light reflecting portion are the same.
The method according to claim 1,
A first polarizing film disposed on an outer surface of the first substrate;
A second polarizing film disposed on an outer surface of the second substrate and having a light transmission axis perpendicular to the first polarizing film; And
A? / 2 wavelength retardation compensation film disposed on any one surface of the second substrate;
And a? / 4 wavelength retardation compensation film disposed on the? / 2 wavelength retardation compensation film,
The light transmission axis of the? / 2 wavelength retardation compensation film has a range of 0 to 45 degrees with respect to the second polarizing film,
And the light transmission axis of the? / 4 wavelength retardation compensation film has a range of 45 ° to 90 ° with respect to the second polarizing film.
Providing a first substrate and a second substrate having a plurality of pixels partitioned into a light transmitting portion and a light reflecting portion;
Forming a reflective electrode disposed on the first substrate of the light reflection part and a transparent electrode disposed on the first substrate of the light transmission part, and forming a color filter layer and a common electrode on the second substrate;
Forming a retarder layer on the inner surface of one of the first and second substrates including the light transmitting portion and the light reflecting portion to retard the phase of light transmitted through the light reflecting portion by? / 4; And
Attaching the first and second substrates through a liquid crystal between the first and second substrates; Lt; / RTI >
The step of forming the retarder layer may include: forming a preliminary retarder layer on one surface of the first and second substrates including the light transmitting portion and the light reflecting portion;
Irradiating the light reflection portion of the preliminary retarder layer with polarized UV and irradiating the light transmission portion of the preliminary retarder layer with unpolarized UV; And
Thermally curing the preliminary retarder layer; / RTI >
Wherein the retarder layer comprises a photoreactive monomer aligned in the vertical or horizontal direction of the polarization direction by the polarized UV.
delete 9. The method of claim 8,
And the exposure energy of the polarized UV is in the range of 1 mJ to 1000 mJ.
9. The method of claim 8,
Wherein the preliminary retarder layer has a thermosetting temperature in the range of 80 캜 to 160 캜.
9. The method of claim 8,
After the step of bonding the first and second substrates through the liquid crystal between the first and second substrates,
And forming first and second polarizing films respectively having light transmission axes perpendicular to each other on outer surfaces of the first and second substrates.
13. The method of claim 12,
Before forming the first and second polarizing films respectively having light transmission axes perpendicular to each other on outer surfaces of the first and second substrates,
/ 2 wavelength retardation compensation film disposed on one surface of the second substrate and a? / 4 wavelength retardation compensation film disposed on the? / 2 wavelength retardation compensation film,
The light transmission axis of the? / 2 wavelength retardation compensation film has a range of 0 to 45 degrees with respect to the second polarizing film, and the light transmission axis of the? / 4 wavelength retardation compensation film is And has a range of 45 DEG to 90 DEG.
A first substrate having a plurality of pixels divided into a light transmitting portion and a light reflecting portion;
A reflective electrode disposed on the first substrate of the light reflection portion;
A transparent electrode disposed on the first substrate of the light transmitting portion;
A second substrate corresponding to the first substrate;
A color filter layer formed on an inner surface of the second substrate;
A common electrode disposed on an inner surface of one of the first and second substrates;
A liquid crystal layer interposed between the first and second substrates; And
A retarder layer disposed on an inner surface of the substrate of either the first or second substrate including the light transmitting portion and the light reflecting portion and retarding the phase of light transmitted through the light reflecting portion by? / 4; / RTI >
The liquid crystal layer corresponding to the light reflection portion has a phase delay of? / 4, and the liquid crystal layer corresponding to the light transmission portion has a phase delay of? / 2.

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