KR20170112582A - Flexible color filter and flexible liquid crystal display - Google Patents

Abstract

The present invention relates to a flexible liquid crystal display device in which a flexible color filter in which a touch sensor is integrated, a touch sensor, a color filter, and a thin film transistor array are integrated, and a manufacturing method thereof. Therefore, even if a high-temperature process for forming a semiconductor layer is applied, there is no risk of deformation of a base material required for forming a semiconductor layer, and a reliable product such as a thin film transistor array, a flexible color filter integrated with a touch sensor, There is an advantage that a flexible liquid crystal display device in which a color filter and a thin film transistor array are integrated can be manufactured.

Description

TECHNICAL FIELD [0001] The present invention relates to a flexible color filter and a flexible liquid crystal display device in which a touch sensor is integrated, and a manufacturing method thereof. [0002]

The present invention relates to a flexible liquid crystal display device, and more particularly, to a flexible liquid crystal display device in which a flexible color filter in which a touch sensor is integrated, a touch sensor, a color filter, and a thin film transistor array are integrated and a method of manufacturing the same.

There have been attempts to introduce a touch input method into a wider variety of electronic devices while receiving a touch input method as a next generation input method. Accordingly, research and development of a touch sensor which can be applied to various environments and can accurately recognize a touch are actively carried out ought.

For example, in the case of an electronic device having a touch-type display, an ultra-thin flexible display which achieves light weight, low power and improved portability has been attracting attention as a next generation display, and development of a touch sensor applicable to such a display has been required. Flexible display means a display made on a flexible substrate that can bend, bend or twist without loss of characteristics. Technological developments are taking place in the form of flexible LCD, flexible OLED and electronic paper.

As an example of a flexible LCD, a filing invention relating to "a method of manufacturing a flexible color filter and a flexible color display device" is disclosed in Korean Patent Laid-Open Publication No. 10-2014-0126681.

The invention disclosed in Korean Patent Publication No. 10-2014-0126681 includes the steps of providing a bonded substrate including a rigid substrate and a carrier removing adhesive layer disposed on the supporting substrate, a flexible substrate on the carrier removing adhesive layer Forming a color filter module by forming a color filter layer on the flexible substrate; separating the flexible substrate from the support substrate by placing the color filter module at -20 캜 to 20 캜 for 3 minutes to 40 minutes; And a flexible color filter is manufactured.

That is, the disclosed invention disclosed in the application is a technique of forming a flexible color filter in the form of a film by peeling a film layer through a cooling process after forming a color filter layer by adhering a film layer such as a flexible substrate onto a substrate.

However, since a process of adhering a film layer such as a flexible substrate to a rigid substrate must be accompanied, there is a disadvantage in that the production yield by a film adhering process is lower than other processes. In forming a color filter on a film layer, The film layer may be deformed at the time of application of the process to deteriorate the performance of the display device.

Korean Patent Publication No. 10-2014-0126681

Accordingly, the present invention has been made to solve the above-mentioned problems, and it is a primary object of the present invention to provide a flexible color filter in which a touch sensor is integrated without using a film layer, a flexible liquid crystal display device including the same, Method,

It is still another object of the present invention to provide a flexible color filter in which a touch sensor capable of improving the production yield as compared with an existing method of manufacturing a color filter by adhering a film layer on a substrate is integrated and a flexible liquid crystal display .

The present invention also provides a highly reliable flexible liquid crystal display device free from deformation of product components even in a high-temperature process during the manufacturing process, and provides a flexible liquid crystal display device in which a touch sensor and a color filter are integrated, The present invention further provides a flexible liquid crystal display device in which a sensor, a color filter, and a thin film transistor array are integrated, and a method of manufacturing the same.

According to another aspect of the present invention, there is provided a method of manufacturing a flexible color filter in which a touch sensor is integrated,

Forming a separation layer on the substrate;

Forming an electrode pattern layer constituting a touch sensor on the isolation layer;

Forming a protective layer on the electrode pattern layer;

Forming a planarization layer on the protective layer to prevent color shift of the color filter,

Forming a color filter array on the planarization layer;

Bonding a protective film coated on one side of the pressure-sensitive adhesive layer onto the color filter array;

Separating the substrate from the isolation layer,

And bonding the base film to one surface of the separation layer from which the substrate is separated.

In the flexible color filter in which the touch sensor according to the embodiment of the present invention is integrated,

A separation layer formed on the base film;

An electrode pattern layer formed on the isolation layer for implementing a touch sensor,

A protective layer formed on the electrode pattern layer,

A planarization layer formed on the protective layer to prevent a color filter from being distorted,

A color filter array formed on the planarization layer,

And a protective film bonded on the color filter array.

Further, according to another embodiment of the present invention, there is provided a method of manufacturing a flexible liquid crystal display device,

Forming an alignment film on a color filter array of a flexible color filter array module in which a touch sensor and a color filter array are integrated on a first base film;

Forming an alignment layer and a liquid crystal layer on a thin film transistor array of a thin film transistor array module in which a first separation layer and a capping layer are formed on a substrate layer and a thin film transistor array is formed on the capping layer,

And bonding the flexible color filter array module and the thin film transistor array module so that the liquid crystal layer formed on the thin film transistor array module and the color filter array formed on the flexible color filter array module face each other. do.

According to another embodiment of the present invention, there is provided a flexible liquid crystal display device comprising:

A flexible color filter array module in which a touch sensor and a color filter array are integrated on a first base film,

A thin film transistor array module in which a first separation layer and a capping layer are formed on a substrate layer, and a thin film transistor array is formed on the capping layer;

And a liquid crystal layer formed on the bonding surface, wherein the flexible color filter array module and the thin film transistor array module are bonded to each other such that the thin film transistor array and the color filter array formed on the flexible color filter array module are opposed to each other, In addition,

Wherein the flexible color filter array module comprises:

A second separation layer formed on the first base film,

An electrode pattern layer formed on the second separation layer for implementing a touch sensor,

A first protective layer formed on the electrode pattern layer,

A planarization layer formed on the first passivation layer to prevent a color filter from shifting in color,

A color filter array formed on the planarization layer,

And an alignment film formed on the color filter array.

According to the above-mentioned problem solving means, since the flexible color filter in which the touch sensor according to the embodiment of the present invention is integrated is formed on the glass substrate without using the film layer, even if the high temperature process is applied, (That is, the film layer of the prior art shown in the drawings), and thus it is possible to manufacture a flexible product in which a reliable product, i.e., a touch sensor is integrated,

In addition, since the present invention does not use a separate film layer for forming a touch sensor and a color filter, there is an advantage that the production yield can be improved as compared with the disclosed invention exemplified in the prior art document.

In addition, the present invention provides a flexible liquid crystal display device including a flexible color filter array and a thin film transistor array, which are free from deformation of product components during a high-temperature process in a manufacturing process, and a flexible liquid crystal display device It is a useful invention that can be manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary cross-sectional view of a flexible color filter in which a touch sensor according to an embodiment of the present invention is integrated. FIG.
2 is a view for further explaining the influence of a step generated by an electrode pattern constituting a touch sensor when a color filter array is formed on a protective layer.
3 is a diagram illustrating an example of a manufacturing process flow of a flexible color filter in which a touch sensor according to an embodiment of the present invention is integrated.
FIG. 4 and FIG. 5 are cross-sectional structural views of a flexible color filter according to an embodiment of the present invention. FIG.
6 is a partial enlarged view of a flexible color filter according to an embodiment of the present invention.
Fig. 7 is an exemplary sectional structure of a flexible color filter array module (a) and a thin film transistor array module (b) constituting a flexible liquid crystal display device according to an embodiment of the present invention;
Fig. 8 is an exemplary view showing a bonding state of the flexible liquid crystal display device manufactured by bonding the flexible color filter array module and the thin film transistor array module shown in Fig. 7; Fig.
9 is a diagram illustrating an example of a manufacturing process flow of a thin film transistor array module according to an embodiment of the present invention.
FIGS. 10 and 11 are cross-sectional side views of intermediate products for manufacturing processes of a thin film transistor array module according to an embodiment of the present invention;

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

In addition, the embodiments according to the concept of the present invention can make various changes and have various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

In addition, in the description of the embodiments of the present invention, when it is determined that a specific description such as a related known function or configuration (for example, a shape of an electrode pattern, a method of forming an electrode pattern, etc.) may unnecessarily obscure the gist of the present invention A detailed description thereof will be omitted.

[Example of Flexible Color Filter in which Touch Sensor is Integrated and Method of Manufacturing the Same]

First, FIG. 1 illustrates a cross-sectional structure of a flexible color filter in which a touch sensor according to an embodiment of the present invention is integrated.

As shown in FIG. 1, a flexible color filter in which a touch sensor according to an embodiment of the present invention is integrated does not use a film layer to prevent deformation of a film layer due to a high temperature process, but forms a separation layer on a glass substrate And then the base film 100 is adhered after the touch sensor and the color filter array are sequentially formed.

That is, the flexible color filter in which the touch sensor according to the embodiment of the present invention is integrated, as shown in FIG. 1,

A separation layer 120 formed on the base film 100,

An electrode pattern layer 131, 132, 133, 135 formed for realizing a touch sensor TS on the isolation layer 120,

A protective layer 140 formed on the electrode pattern layers 131, 132, 133, and 135,

A planarization layer 150 formed on the passivation layer 140 to prevent a color filter from being distorted,

A color filter array (CF) 160, 170 formed on the planarization layer 150,

And a protective film (not shown) bonded on the color filter array (CF, 160, 170).

The electrode pattern layer for constituting or implementing the touch sensor has a first electrode pattern 131 arranged in a first direction (for example, an x-axis direction), a second electrode pattern 131 arranged in a second direction (for example, An insulating layer 133 for insulating the first and second electrode patterns 131 and 132 and a bridge electrode 133 for connecting the first electrode pattern 131 electrically separated from each other, Pattern 135 as shown in FIG. Hereinafter, it is assumed that the electrode pattern layer includes the first and second electrode patterns 131 and 132, the insulating layer 133, and the bridge electrode pattern 135 for convenience of explanation. 1, reference numeral 110 denotes an adhesive applied on one side of the base film 100.

On the other hand, the color filter layer constituting the color filter array is denoted by reference numeral 160, and the reference numeral 170 is an ITO common electrode constituting the color filter array.

As a deformable embodiment, a flexible color filter in which a touch sensor according to an embodiment of the present invention is integrated may further include a protective layer between the separation layer 120 and the electrode pattern layers 131, 132, 133, and 135. Such a protective layer is not shown in FIG. 1, but is shown in FIG. 4 using the reference numeral 125.

If the color filter array CF is directly formed on the protective layer 140 constituting the touch sensor, a pixel difference of the color filter may occur due to a step generated by the electrode pattern constituting the touch sensor, have. In order to prevent this, it is preferable to form one or more planarization layers 150 on the protective layer 140.

The thickness of the planarization layer 150 is preferably 2 m or more, and the planarization layer 150 may be formed of an organic insulation material. Also, when the thickness of the surface step (roughness) of the planarization layer 150 is 0.1 탆 or less, color shift of the color filter can be prevented.

For reference, FIG. 2A illustrates a screen visually recognized as a smear due to a color shift due to a surface step charter step difference when the surface step thickness is 0.1 mu m or more. FIG. And a characteristic comparative graph of the panel is shown.

On the basis of such experimental characteristics, it is preferable that the thickness difference of the surface step is not more than 0.1 탆, since the color shift of the color filter can be normally prevented when the surface step thickness is 0.1 탆 or less.

data Height of stain (㎛) Top (㎛) Height deviation (占 퐉) Stain Result No1 4.117 3.647 0.470 Kang Soojun NG No2 3.795 3.700 0.095 Missy OK

3 to 5, a method of manufacturing a flexible color filter in which a touch sensor, which can be manufactured without using a film layer, is integrated will be described in more detail.

FIG. 3 is a flow chart illustrating a manufacturing process of a flexible color filter in which a touch sensor according to an exemplary embodiment of the present invention is integrated. FIGS. 4 and 5 are cross-sectional views of a manufacturing process of a flexible color filter incorporating a touch sensor according to an embodiment of the present invention 6 is a partial enlarged view of a flexible color filter in which a touch sensor according to an embodiment of the present invention is integrated.

Referring to FIG. 3, first, a polymer organic film is coated on a glass substrate as a carrier substrate to form a separation layer 120 (step S10) as shown in FIG. 4A.

The separation layer 120 is formed to separate the touch sensor TS and the color filter array CF to be formed on the glass substrate from the glass substrate. The separation layer 120 has the electrode pattern layers 131, 132, 133, ) Can be wrapped around and insulated. For reference, a known coating method such as spin coating, die coating, spray coating and the like can be used as a method of applying the separation layer.

The peeling force of the separation layer 120 is not particularly limited, but may be, for example, 0.01 to 1 N / 25 mm, preferably 0.01 to 0.2 N / 25 mm. When the above range is satisfied, the separation layer 120 can be easily peeled off without residue from the glass substrate in the manufacturing process, and curl and crack due to the tensile force generated during peeling can be reduced.

The thickness of the separation layer 120 is not particularly limited, but may be, for example, 10 to 1,000 nm, preferably 50 to 500 nm. When the above range is satisfied, the peeling force can be stabilized and a uniform pattern can be formed.

As the material of the separation layer 120, a polyimide polymer, a polyvinyl alcohol polymer, a polyamic acid polymer, a polyamide polymer, a polyethylene polymer, a polystyrene polymer, a polynorbornene polymer, a phenylmaleimide copolymer copolymer type polymers, and polyazobenzene type polymers, and they may be used alone or in combination of two or more.

The curing process for forming the separation layer 120 may be performed using heat curing or UV curing alone, or a combination of thermal curing and UV curing.

After the separation layer forming step (S10), a protective layer 125 (which may be referred to as a first protective layer) may be further formed on the separation layer 120 as shown in FIG. 4 (b). This protective layer 125 is an optional component that can be omitted if desired. The protective layer 125 functions to cover and protect the electrode pattern layers 131, 132, 133, and 135, which will be described later, together with the separation layer 120. The protective layer 125 may be formed to cover at least a part of the side surface (sidewall side wall) of the separation layer 120. It is preferable that the protective layer 125 covers the entire side surface of the separation layer 120 in terms of completely shielding the side surface of the separation layer 120 from being exposed.

In the electrode pattern layer forming step S30, a process of forming the electrode pattern layers 131, 132, 133, and 135 on the protective layer 125 or the separation layer 120 is performed.

As described above, the electrode pattern layers 131, 132, 133, and 135 include a first electrode pattern 131 for sensing the x coordinate, a second electrode pattern 132 for sensing the y coordinate, A bridge electrode pattern 135 for connecting the second electrode pattern 132 and an insulating layer 133 for insulating the electrode pattern and the bridge electrode pattern 135 from each other. 4 (c), 4 (d) and 4 (e) show a process of forming the electrode pattern layers 131, 132, 133 and 135 on the protective layer 125, A sectional structure of each of the manufacturing processes in which the electrode patterns 131 and 132 are formed, the insulating layer 133 is formed on the first and second electrode patterns 131 and 132, and the bridge electrode pattern 135 is formed on the insulating layer 133 Respectively. For reference, the thickness and the number of layers of the electrode pattern layers 131, 132, 133, and 135 are not particularly limited, but it is preferable that the thickness is as thin as possible in consideration of the flexibility of the touch sensor.

When the electrode pattern layers 131, 132, 133, and 135 are formed, a protective layer 140 (which may be referred to as a second protective layer) is formed to cover the electrode pattern layers 131, 132, 133, and 135 (step S40) do. The passivation layer 140 is formed to have a flat shape opposite to the surface contacting the electrode pattern layers 131, 132, 133 and 135. The protective layer 140 may be a single layer or a plurality of layers of two or more layers, It is preferable to use a material or a material having the same refractive index as that of the layer 133.

5G, the planarization layer 150 is formed on the protective layer 150 (step S50). The planarization layer 150 is formed in order to prevent color distortion caused by pixel deformation of the color filter due to a step generated by the electrode pattern as described above. The thickness of the planarization layer 150 is preferably 2 m or more, and the planarization layer 150 is preferably formed of an organic insulation material.

6 (a) and 6 (b), when the planarization layer 150 is formed as shown in FIG. 6 (b), even when the step S is generated by the electrode pattern of the touch sensor, There is no deformation and color shift phenomenon can be prevented.

After one or more planarization layers 150 are formed, a color filter array CF is formed on the planarization layer 150 as shown in (h) of FIG. 5 (step S60).

The color filter array CF may include a light shielding layer, a color filter (R, G, B) layer 160, and an ITO common electrode 170. The light-shielding layers are spaced apart from each other to form a matrix, which is called a black matrix layer. A color filter (R, G, B) layer 160 is formed between the light shielding layers and an ITO common electrode 170 is formed on the color filter (R, G, B)

When the color filter array CF is formed on the planarization layer 150 as described above, the protective film coated on one side of the color filter array CF is bonded on the color filter array CF (step S70) do.

After the protective film is bonded, the glass substrate is separated from the separation layer 120 (step S80). That is, separation can be performed using a method of peeling the separation layer 120 in which the touch sensor and the color filter are integrated from the glass substrate. The peeling method may be a lift-off method or a peel-off method, but is not limited thereto.

Thereafter, the base film 100 coated with the adhesive 110 is adhered to one side of the separation layer 120 separated from the glass substrate (step S90), and the protective film bonded on the color filter array CF is removed (step S100) It is possible to manufacture a flexible color filter in which a touch sensor having a sectional structure as shown in Fig. 1 is integrated.

Since the flexible color filter manufactured according to the manufacturing process described above is formed on a glass substrate without using a film layer, even if a high-temperature process is applied, a base material for forming a touch sensor and a color filter Film layer) is not likely to be deformed, and a reliable product, that is, a flexible color filter in which the touch sensor is integrated can be manufactured.

In addition, since the present invention does not use a separate film layer for forming a touch sensor and a color filter, there is an advantage that the production yield can be improved as compared with the disclosed invention exemplified in the prior art document.

On the other hand, in the case of a manufacturer, a separation layer is formed on a glass substrate according to a sales policy, and an electrode pattern layer constituting a touch sensor is formed on the separation layer. After forming a protection layer on the electrode pattern layer, A flat coloring layer for preventing a color shift phenomenon of the color filter, a flexible color filter in which a color filter array is formed on the flattening layer, and a protective film is bonded on the color filter array. The planarizing layer of the flexible color filter having such a structure is also formed of an organic insulating film material. The thickness of the planarizing layer is preferably 2 占 퐉 or more, and the surface step is preferably 0.1 占 퐉 or less.

Hereinafter, a flexible liquid crystal display device using a flexible color filter integrated with a touch sensor that can be manufactured by the above-described manufacturing method and a manufacturing method of the liquid crystal display device will be described. More specifically, a flexible color display device A flexible liquid crystal display device in which a filter and a thin film transistor array are integrated and a manufacturing method thereof will be described.

In the following embodiments, a manufacturing method of a flexible color filter in which the touch sensor described in FIG. 3 is integrated in order to avoid redundant description will be omitted, and a flexible color filter in which the touch sensor manufactured according to FIG. 3 is integrated, Color filter array module (CFAM) ", and the thin film transistor array to be bonded to the flexible color filter array module is defined as a "thin film transistor array module (TFTAM) ".

[Example of flexible liquid crystal display device in which a flexible color filter array module (CFAM) and a thin film transistor array module (TFTAM) are integrated with a touch sensor and a manufacturing method thereof]

7 is a sectional view of a flexible color filter array module (CFAM) (a) and a thin film transistor array module (TFTAM) (b) constituting a flexible liquid crystal display device according to an embodiment of the present invention, And a flexible liquid crystal display device manufactured by bonding a flexible color filter array module (TFTAM) and a thin film transistor array module (CFAM) shown in Fig.

The flexible liquid crystal display device in which the flexible color filter array module (TFTAM) and the thin film transistor array module (CFAM) are integrated according to the embodiment of the present invention, as a result,

A flexible color filter array module (CFAM) in which a touch sensor (TS) and a color filter array (CF) are integrally formed on a first base film (100)

A first separation layer 220 and a capping layer 240 are formed on a base film 200 (which may be a non-flexible substrate as a modified embodiment), and a thin film transistor array (TFT, A TFT array module (TFTAM)

The flexible color filter array module (CFAM) and the thin film transistor array module (TFTAM) are arranged such that the color filter array (CF) formed in the flexible color filter array module (CFAM) And a liquid crystal layer 270 formed on the bonding surface.

A protective layer 230 (see FIG. 7B) is formed between the first separation layer 220 on the second base film 200 constituting the thin film transistor array module (TFTAM) and the cap layer 240, ) Can be further formed. Of course, a protective layer may be further formed between the separating layer 120 on the first base film 100 and the electrode pattern layer constituting the touch sensor TS, which constitute the flexible color filter array module (CFAM).

The method of manufacturing the flexible color filter array module (CFAM) shown in FIG. 7A has already been described with reference to FIG. 3, and will not be described below. However, in order to manufacture a flexible liquid crystal display device using the flexible color filter array module (CFAM) manufactured by the method described with reference to FIG. 3, it is necessary to remove the protective film from the manufactured flexible color filter array module (CFAM) An alignment film is formed (180) on the color filter array CF as shown in Fig. 7 (a), and alignment property is given to the alignment film 180 by an exposure process to prevent later formation It is preferable that the liquid crystal layer 270 is arranged in a certain direction.

7A shows a state in which an alignment film 180 is formed on a flexible color filter array module CFAM. In FIG. 7B, an alignment film 180 is formed on a thin film transistor array module (TFTAM) The liquid crystal layer 260 and the liquid crystal layer 270 are formed. When these two modules (TFTAM, CFAM) are bonded to each other, a flexible liquid crystal display device in which a thin film transistor array, a touch sensor, and a color filter array are integrated as shown in FIG. 8C can be manufactured. The process of forming a thin film transistor array (TFT) on the base film 200, that is, a process of manufacturing a thin film transistor array module (TFTAM) will be described first with reference to FIGS. 9 to 11, To illustrate,

FIGS. 10 and 11 are cross-sectional views of an intermediate product according to the manufacturing process of the thin film transistor array module according to the embodiment of the present invention, respectively; and FIG. 9 is a flow chart showing a manufacturing process of the thin film transistor array module (TFTAM) .

Referring to FIG. 9, first, a polymer organic film is coated on a glass substrate to form a separation layer 220 as shown in FIG. 10A (step S110). The isolation layer 220 is formed to separate the thin film transistor array (TFT) 250 formed on the glass substrate from the glass substrate. The isolation layer 220 includes a thin film transistor array (TFT) 250 formed on the upper side, And a function of insulating and inserting it can be performed. As a method of applying the separation layer 220, a known coating method such as spin coating, die coating, spray coating and the like can be used.

The material and the forming process of the separation layer 220 have been described above, so that the following description is omitted.

The protective layer 230 may be additionally formed on the separation layer 220 as shown in FIG. 10B (step S120). This protective layer 230 is an optional component that can be omitted if necessary.

The protection layer 230 functions to protect the thin film transistor array layer by covering the thin film transistor array (TFT) 250 to be described later together with the isolation layer 220. The protective layer 230 may be formed to cover at least a part of the side surface of the isolation layer 220. The side surface of the separation layer 220 is the edge sidewall of the separation layer 230. It is preferable that the protective layer 230 covers the entire side surface of the separation layer 220 in terms of completely shielding the side surface of the separation layer 220 from being exposed.

The capping layer 240 may be formed on the isolation layer 220 or on the protection layer 230 as shown in Figure 10C. (Step S130). The capping layer 240 may be formed by depositing a capping layer forming material, preferably an inorganic insulating layer material such as SiNx or SiOx to form a capping layer 240 to cover the isolation layer 220 and the protective layer 230 .

When the capping layer 240 is formed on the separation layer 220 or the protection layer 230, the capping layer 240 is sequentially formed on the capping layer 240 as shown in FIGS. 10 (d) and 10 (e) Thereby forming a transistor array (TFT) 250 (step S140).

More specifically, the thin film transistor array (TFT) 250 includes a gate layer (gate electrode metal layer 251), a gate insulating layer 253, a semiconductor layer 255 (an active layer and an ohmic contact layer) A drain electrode metal layer 257, a passivation layer 258, and a pixel electrode layer (ITO Pixel electrode layer 259).

The gate layer 251 may be formed of a conductive material such as Mg, Al, Ni, Au or the like as shown in FIG. 10 (d) The insulating layer 253 may be formed of a layer of an insulating material such as a silicon oxide layer or a silicon nitride layer.

As shown in FIG. 11A, an active layer, which is a constituent of the semiconductor layer 255, is formed on the gate insulating layer 253. This active layer overlaps the gate layer 251 to form a channel. A channel is formed between the source / drain electrodes of the S / D layer 257 on the gate layer 251. The active layer can be formed of a polysilicon layer or an amorphous silicon layer.

The ohmic contact layer constituting the semiconductor layer 255 is formed on the active layer except the channel portion for ohmic contact with the source / drain electrode. The source / drain electrodes of the S / D layer 257 are formed so as to face each other with the channel portion therebetween.

A protective layer 258 is formed on the S / D layer 257 and a pixel electrode layer 259 connected to the source / drain electrodes is formed as shown in FIG. 11 (d). The pixel electrode is formed using an indium tin oxide (ITO) electrode. The protective layer 258 may also be formed of an inorganic insulating material or an organic insulating material. It will be apparent to those skilled in the art that such a thin film transistor array is only one example, and can be formed in various known ways.

When the thin film transistor array (TFT) 250 is formed on the capping layer 240 as described above, the protective film coated on one side of the pressure sensitive adhesive layer is bonded to the pixel electrode layer 259 (step S150). The protective film may be a transparent optical film or a polarizing plate. The transparent optical film may be surface-treated if necessary. Examples of the surface treatment include a chemical treatment such as a plasma treatment, a corona treatment, a dry treatment such as a primer treatment, and an alkali treatment including a saponification treatment. Further, the transparent optical film may be an isotropic film, a retardation film, or a protective film.

When the protective film is bonded through the transfer process, the glass substrate as the carrier substrate and the separation layer 220 are separated (step S160). That is, the separation can be performed using a method of peeling the separation layer 220 in which the thin film transistor array (TFT) 250 is formed from the organic substrate. The peeling method may be a lift-off method or a peel-off method, but is not limited thereto.

After the glass substrate is separated from the separation layer 220, the base film 200 coated with the adhesive 210 is adhered to the one surface of the base film 200 (Step S170) as shown in FIG. 7 (b) a thin film transistor array module (TFTAM) having a sectional structure as shown in Fig. Of course, FIG. 7 (b) also shows the addition of the alignment layer 260 and the liquid crystal layer 270 after removing the protective film located above the TFT array module (TFTAM).

When the thin film transistor array module (TFTAM) is manufactured by the above method, the thin film transistor array is also formed on the glass substrate. Therefore, even if the high temperature process for forming the semiconductor layer is applied, there is no risk of deformation of the base material for forming the semiconductor layer A reliable thin film transistor array can be manufactured.

When the flexible color filter array module (CFAM) and the thin film transistor array module (TFTAM) are manufactured by using the methods shown in Figs. 3 and 9, that is, the first and second substrates, respectively, the alignment layers 180 and 260 are formed on the respective modules (TFTAM and CFAM) as shown in FIG. 8 (b) and FIG. 8, and orientation is given to prevent the liquid crystals from being distorted during the flexible implementation. The alignment film patterning process for imparting the alignment property may use the method disclosed in Application No. 10-2010-0025931.

A liquid crystal layer 270 is formed on a thin film transistor array (TFT) above a thin film transistor array module (TFTAM) after the orientation films 260 and 180 are formed in each module (TFTAM and CFAM) The thin film transistor array module (TFTAM) and the flexible color filter array module (CFAM) are arranged so that the color filter array CF formed on the flexible color filter array module (CFAM) As shown in (c) of FIG.

As a result, a flexible liquid crystal display device in which a thin film transistor array, a color filter, and a touch sensor are integrated as shown in Fig. 8 (c) can be produced.

Therefore, the present invention can manufacture a flexible liquid crystal display device including a flexible color filter array and a thin film transistor array which are free from deformation of product components in a high-temperature process in the manufacturing process, and can manufacture a flexible liquid crystal display device It is a useful invention.

As a modified embodiment of the present invention, a flexible liquid crystal display device may be manufactured by bonding an externally formed thin film transistor array module to a flexible color filter array module according to an embodiment of the present invention, One of the base film or the non-flexible substrate described in the embodiment of the present invention may be used.

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined only by the appended claims.

Claims (45)

Forming a separation layer on the substrate;
Forming an electrode pattern layer constituting a touch sensor on the separation layer;
Forming a protective layer on the electrode pattern layer;
Forming a planarization layer on the protection layer to prevent color drift of the color filter;
Forming a color filter array on the planarization layer;
And bonding the protective film coated on one side of the pressure sensitive adhesive layer onto the color filter array. The method of claim 1, further comprising: separating the substrate from the isolation layer;
And bonding the base film to one surface of the separation layer from which the substrate is separated. The method of claim 1 or 2, further comprising: forming a protective layer between the isolation layer and the electrode pattern layer. 4. The method according to claim 3, wherein the flattening layer has a thickness of 2 mu m or more or a surface step is 0.1 mu m or less. The method of claim 2, further comprising removing the protective film after bonding the substrate film. [6] The method of claim 5, wherein the planarization layer is formed of an organic insulating material. The method according to claim 1 or 2, wherein the flattening layer has a thickness of 2 탆 or more or a surface step is 0.1 탆 or less. The method of claim 1 or 2, wherein the flattening layer is formed of an organic insulating material. A separation layer formed on the substrate;
An electrode pattern layer formed on the isolation layer to configure a touch sensor;
A protective layer formed on the electrode pattern layer;
A planarization layer formed on the passivation layer to prevent a color shift of the color filter;
A color filter array formed on the planarization layer;
And a protective film bonded on the color filter array. [12] The flexible color filter according to claim 9, further comprising another protective layer formed between the separation layer and the electrode pattern layer. The flexible color filter according to claim 9 or 10, wherein the flattening layer has a thickness of 2 탆 or more or a surface step is 0.1 탆 or less. The flexible color filter according to claim 9 or 10, wherein the planarization layer is formed of an organic insulation material. Forming an alignment film on a color filter array of a flexible color filter array module in which a touch sensor and a color filter array are integrated on a first base film;
Forming an alignment layer and a liquid crystal layer on a thin film transistor array of a thin film transistor array module in which a first separation layer and a capping layer are formed on a substrate layer and a thin film transistor array is formed on the capping layer;
And bonding the flexible color filter array module and the thin film transistor array module such that the liquid crystal layer formed on the thin film transistor array module and the color filter array formed on the flexible color filter array module face each other Of the flexible liquid crystal display device. 14. The flexible color filter array module according to claim 13,
Forming a second separation layer on the first substrate;
Forming an electrode pattern layer constituting a touch sensor on the second separation layer;
Forming a first protective layer on the electrode pattern layer;
Forming a planarization layer on the first passivation layer to prevent the color filter from shifting in color;
Forming a color filter array on the planarization layer;
Bonding a first protective film coated on one side of the pressure sensitive adhesive layer onto the color filter array;
Separating the first substrate from the second isolation layer;
Bonding the first base film to one surface of the second separation layer from which the first substrate is separated;
And removing the first protective film. The method of manufacturing a flexible liquid crystal display device according to claim 1, [16] The method of claim 14, further comprising forming a second protective layer between the second separation layer and the electrode pattern layer. 16. The manufacturing method of a flexible liquid crystal display device according to claim 15, wherein the flattening layer has a thickness of 2 mu m or more or a surface step difference of 0.1 mu m or less. The method of claim 14 or 15, wherein the planarization layer is formed of an organic insulating material. 15. The manufacturing method of a flexible liquid crystal display device according to claim 14, wherein the planarization layer has a thickness of 2 mu m or more or a surface step difference of 0.1 mu m or less. [Claim 19] The method of claim 18, wherein the planarization layer is formed of an organic insulating material. 14. The thin film transistor array module according to claim 13,
Forming the first separation layer on the base layer;
Forming a capping layer on the first separation layer;
Forming a thin film transistor array on the capping layer;
Bonding a second protective film coated on one side of the pressure sensitive adhesive layer onto the thin film transistor array;
Separating the substrate layer from the first separation layer;
Bonding the second base film to one surface of the first separating layer from which the base layer is separated;
And removing the second protective film. The method of manufacturing a flexible liquid crystal display device according to claim 1, 21. The method of claim 20, further comprising forming a third passivation layer between the first separation layer and the capping layer. The method of claim 20 or 21, wherein the capping layer is formed of an inorganic insulating layer material. The manufacturing method of a flexible liquid crystal display device according to claim 20 or 21, wherein the flattening layer has a thickness of 2 mu m or more or a surface step difference of 0.1 mu m or less. The method of claim 20 or 21, wherein the planarization layer is formed of an organic insulating material. 14. The thin film transistor array module according to claim 13,
Forming the first separation layer on the base layer;
Forming a capping layer on the first separation layer;
Forming a thin film transistor array on the capping layer;
Bonding a second protective film coated on one side of the pressure sensitive adhesive layer onto the thin film transistor array;
Separating the substrate layer from the first separation layer;
Bonding the second base film to one surface of the first separating layer from which the base layer is separated;
And removing the second protective film. The method of manufacturing a flexible liquid crystal display device according to claim 1, 26. The method of claim 25, further comprising forming a third passivation layer between the first separation layer and the capping layer. 26. The method of claim 25 or claim 26, wherein the capping layer is formed of an inorganic insulating layer material. The flexible color filter array module or the thin film transistor array module according to any one of claims 13, 14, 15, 20, 21, 25, and 26, Of the flexible liquid crystal display device. The thin film transistor array module according to any one of claims 13, 14, 15, 20, 21, 25, and 26, wherein the base layer of the thin film transistor array module is either a base film or an inflexible substrate A method of manufacturing a liquid crystal display device. A separation layer formed on the base film;
An electrode pattern layer formed on the isolation layer for implementing a touch sensor;
A protective layer formed on the electrode pattern layer;
A planarization layer formed on the passivation layer to prevent a color shift of the color filter;
A color filter array formed on the planarization layer;
And a protective film bonded on the color filter array. The flexible color filter according to claim 30, further comprising a protective layer formed between the separation layer and the electrode pattern layer. 32. The flexible color filter according to claim 30 or 31, wherein the planarization layer has a thickness of 2 mu m or more or a surface step difference of 0.1 mu m or less. The flexible color filter according to claim 30 or 31, wherein the planarization layer is formed of an organic insulation film material. A flexible color filter array module in which a touch sensor and a color filter array are integrated on a first base film;
A thin film transistor array module in which a first separation layer and a capping layer are formed on a substrate layer, and a thin film transistor array is formed on the capping layer;
And a liquid crystal layer formed on the bonding surface, wherein the flexible color filter array module and the thin film transistor array module are bonded to each other such that the thin film transistor array and the color filter array formed on the flexible color filter array module are opposed to each other, The flexible liquid crystal display device comprising: 36. The flexible color filter array module of claim 34,
A second separation layer formed on the first base film;
An electrode pattern layer formed on the second separation layer for implementing a touch sensor;
A first protective layer formed on the electrode pattern layer;
A planarization layer formed on the first passivation layer to prevent a color filter from being distorted;
A color filter array formed on the planarization layer;
And an alignment layer formed on the color filter array. 36. The flexible liquid crystal display of claim 35, further comprising a second protective layer formed between the second separation layer and the electrode pattern layer. 37. The flexible liquid crystal display of claim 35 or 36, wherein the flattening layer has a thickness of 2 占 퐉 or more or a surface level difference of 0.1 占 퐉 or less. 37. The flexible liquid crystal display of claim 35 or 36, wherein the planarization layer is formed of an organic insulating material. 36. The flexible liquid crystal display device according to claim 35 or 36, wherein orientation property is imparted when the alignment film is formed. The thin film transistor array module according to claim 34 or 35,
The first separation layer formed on the base layer;
A capping layer formed on the first separation layer;
A thin film transistor array formed on the capping layer;
And an alignment layer formed on the thin film transistor array. 41. The flexible liquid crystal display of claim 40, further comprising a third passivation layer formed between the first separation layer and the capping layer. 42. The flexible liquid crystal display of claim 41, wherein the capping layer is formed of an inorganic insulating layer material. 41. The flexible liquid crystal display of claim 40, wherein the capping layer is formed of an inorganic insulating layer material. 42. The flexible liquid crystal display of claim 40, wherein the flexible color filter array module or the thin film transistor array module further imparts an orientation property when forming the alignment film. 35. The flexible liquid crystal display device according to any one of claims 34, 35, and 36, wherein the base layer of the thin film transistor array module is one of a base film and an inflexible substrate.

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