KR20180077652A - Display device having a display panel - Google Patents

Abstract

The present invention relates to a display device in which a display panel includes a first substrate and a second substrate with an area smaller than that of the first substrate. The display device can prevent the penetration of external moisture by preventing delamination between the first and second substrates by using an optical film.

Description

[0001] The present invention relates to a display device having a display panel,

The present invention relates to a display device including a display panel including a first substrate and a second substrate having a smaller area than the first substrate.

2. Description of the Related Art Generally, electronic devices such as a monitor, a TV, a notebook, a digital camera, and the like include a display device for implementing an image. For example, the display device may include a liquid crystal display device and an organic light emitting display device.

The display device may include a display panel. The display panel may include a first substrate and a second substrate bonded to the first substrate. The second substrate may have a smaller area than the first substrate. The display device may further include a gate driver and a data driver for supplying various signals to the display panel. The display panel may further include pads connected to the gate driver or the data driver. The pads may be located on the inner surface of the first substrate exposed by the second substrate.

In the display device, the second substrate may include a side surface that does not face the pads. For example, the pads may be disposed along three sides of the first substrate. The second substrate may be positioned closer to a side of the first substrate on which the pads are not disposed.

The display device may further include a moisture-proof adhesive layer for keeping the first substrate and the second substrate in a cemented state. For example, the moisture-proof adhesive layer may directly contact the inner surface of the first substrate and the side surface of the second substrate, and may extend on the outer surface of the second substrate.

However, since the inner surface of the first substrate on which the pads are not disposed has a relatively small area, it may not sufficiently adhere to the moisture-proof adhesive layer. In particular, in a display device including a curved display panel, a stress for a curved surface may be applied between the first substrate and the second substrate. Accordingly, there is a problem that the display device is lifted between the first substrate and the second substrate on the side where the pads are not disposed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device capable of preventing lifting between a first substrate and a second substrate.

Another object of the present invention is to provide a display device capable of improving adhesion between a first substrate and a second substrate on a side where pads are not located.

The problems to be solved by the present invention are not limited to the above-mentioned problems. Tasks not mentioned here will be apparent to the ordinarily skilled artisan from the description below.

According to an aspect of the present invention, there is provided a display device including a first substrate. The first substrate includes pads. The first substrate is bonded to the second substrate. The second substrate includes a first side toward the pads and a second side toward the other side of the first side. An optical film is placed on the outer surface of the first substrate. The optical film extends along an outer surface of the second substrate along a second side of the second substrate.

The distance between the second side of the second substrate and the side adjacent to the second side of the first substrate may be less than the distance between the first side of the second substrate and the side adjacent the first side of the first substrate.

A side insulating film may be positioned between the second side of the second substrate and the optical film.

The side insulating film may include a moisture absorbing material.

The side insulating film can directly contact the second substrate and the optical film.

The side insulating film may include an adhesive material.

The lateral insulating film may extend between the outer surface of the second substrate and the optical film.

The optical film may include a polarizing material.

According to another aspect of the present invention, there is provided a display device including a display panel. The display panel includes a first substrate and a second substrate. The area of the second substrate is smaller than the area of the first substrate. A flexible film is placed on the outer surface of the second substrate. The flexible film extends on the inner surface of the first substrate along a first side of the second substrate. An optical film is placed on the outer surface of the first substrate. The optical film extends onto the outer surface of the second substrate. The optical film covers a second side face of the second substrate facing away from the first side face.

A moisture-proof adhesive layer may be disposed between the outer surface of the second substrate and the flexible film. The moisture-proof adhesive layer may extend on the first side of the second substrate. A side insulating film may be positioned between the second side of the second substrate and the optical film. The side insulating film may include a material different from the moisture-proof adhesive layer.

The length of the contact area between the first substrate and the moisture-proof adhesive layer may be greater than the distance between the second side of the second substrate and the optical film.

The display device according to the technical idea of the present invention can prevent the side surface of the second substrate not facing the pad from being separated from the first substrate by using the optical film. Accordingly, in the display device according to the technical idea of the present invention, the adhesion between the first substrate and the second substrate is improved by the optical film, so that the floating phenomenon can be prevented. Therefore, the reliability and lifetime of the display device according to the embodiment of the present invention can be improved.

1 is a schematic view of a display apparatus according to an embodiment of the present invention.
2 is a sectional view taken along the line I-I 'in FIG.
FIG. 3 is an enlarged view of the P region of FIG. 2. FIG.
4 and 5 are views showing a display device according to another embodiment of the present invention, respectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

In the drawings, the same reference numerals denote the same components throughout the specification. In the drawings, the lengths and the thicknesses of layers or regions may be exaggerated for convenience. In addition, when the first component is described as being on the second component, it is preferable that the first component is located on the upper side in direct contact with the second component, And the third component is located between the second components.

Here, the terms first, second, etc. are used for describing various components and are used for the purpose of distinguishing one component from another component. However, the first component and the second component may be arbitrarily named according to the convenience of the person skilled in the art without departing from the technical idea of the present invention.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. For example, an element represented in singular form includes a plurality of elements unless the context clearly dictates a singular number. Also, in the specification of the present invention, the terms such as " comprises "or" having ", and the like, designate the presence of stated features, integers, steps, operations, elements, But do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the related art and, unless expressly defined in the specification of the present invention, are intended to mean either an ideal or an overly formal meaning It is not interpreted.

(Example)

1 is a schematic view of a display apparatus according to an embodiment of the present invention. 2 is a sectional view taken along the line I-I 'in FIG. FIG. 3 is an enlarged view of the P region of FIG. 2. FIG.

1 to 3, a display device according to an embodiment of the present invention may include a display panel 100. The display panel 100 may include a first substrate 110 and a second substrate 120. The second substrate 120 may be attached to the first substrate 110. Pixel regions may be located between the first substrate 110 and the second substrate 120. A self-emission type element and / or a variable transmittance element may be disposed in each pixel region. For example, a display device according to an embodiment of the present invention includes a thin film transistor 130 and a light emitting structure 150 disposed between a first substrate 110 and a second substrate 120 of a display panel 100 Display device.

The area of the first substrate 110 may be larger than the area of the second substrate 120. Pads 105 may be located on the inner surface of the first substrate 110 exposed by the second substrate 120. The second substrate 120 includes a first side surface 121S, a second side surface 122S facing the first side surface 121S, and a second side surface 122S positioned between the first side surface 121S and the second side surface 122S. And a fourth side 124S opposite to the third side 123S. For example, the pads 105 may be located outside the first side 121S, the third side 123S, and the fourth side 124S of the second substrate 120. The second side 122S of the second substrate 120 may not face the pads 105. [

The inner surface of the first substrate 110 where the pads 105 are not located may have a relatively small area. The second substrate 120 may be positioned close to a side adjacent to the second side 122S of the first substrate 110. [ For example, the distance between the second side 122S of the second substrate 120 and the side adjacent to the second side 122S of the first substrate 110 may be greater than the distance between the second side 122S of the second substrate 120, May be less than the distance between the first side 121S and the side adjacent to the first side 121S of the first substrate 110. [ The distance between the third side 123S of the second substrate 120 and the side adjacent to the third side 123S of the first substrate 110 and the distance between the third side 123S of the second substrate 120 and the side adjacent to the third side 123S of the first substrate 110, The distance between the first side surface 121S of the second substrate 120 and the side surface adjacent to the fourth side surface 124S of the first substrate 110 is greater than the distance between the first side surface 121S of the second substrate 120 and the side surface of the first substrate 110, May be the same as the distance between the side surfaces adjacent to the first side surface 121S.

The first substrate 110 and the second substrate 120 may include an insulating material. The first substrate 110 may include a transparent material. For example, the first substrate 110 may comprise glass or plastic. The second substrate 120 may include a material different from the first substrate 110. For example, the second substrate 120 may include a highly reflective metal such as Al or Ag. Accordingly, in the display device according to the embodiment of the present invention, the light generated by the light emitting structure 150 may be emitted toward the first substrate 110.

The thin film transistor 130 may be positioned between the first substrate 110 and the second substrate 120. The thin film transistor 130 may be located near the first substrate 110. For example, the thin film transistor 130 may include a semiconductor pattern 131, a gate insulating film 132, a gate electrode 133, an interlayer insulating film 134, a source electrode 135 and a drain electrode 136 have.

The semiconductor pattern 131 may include a semiconductor material. For example, the semiconductor pattern 131 may include amorphous silicon or polycrystalline silicon. The semiconductor pattern 131 may include an oxide semiconductor material. For example, the semiconductor pattern 131 may include IGZO.

The semiconductor pattern 131 may include a source region, a drain region, and a channel region. The channel region may be located between the source region and the drain region. The conductivity of the channel region may be lower than the conductivity of the source region and the conductivity of the drain region. For example, the source region and the drain region may comprise a conductive impurity.

The display device according to the embodiment of the present invention is described in which the semiconductor pattern 131 of the thin film transistor 130 is in direct contact with the first substrate 110. However, the display device according to another embodiment of the present invention may further include a buffer insulating layer located between the first substrate 110 and the thin film transistor 130. The buffer insulating layer may include an insulating material. For example, the buffer insulating layer may include silicon oxide.

The gate insulating layer 132 may be located on the semiconductor pattern 131. The gate insulating layer 132 may include an insulating material. For example, the gate insulating film 132 may include silicon oxide and / or silicon nitride. The gate insulating layer 132 may have a multi-layer structure. The gate insulating layer 132 may include a high-K material. For example, the gate insulating layer 132 may include hafnium oxide (HfO) or titanium oxide (TiO).

The gate electrode 133 may be located on the gate insulating layer 132. The gate electrode 133 may overlap the channel region of the semiconductor pattern 131. The gate electrode 133 may be insulated from the semiconductor pattern 131 by the gate insulating layer 132. For example, the gate electrode 133 may include a side surface that is vertically aligned with a side surface of the gate insulating layer 132. The side surface of the gate insulating layer 132 may be continuous with the side surface of the gate electrode 133.

The gate electrode 133 may include a conductive material. For example, the gate electrode 133 may include a metal such as aluminum (Al), chromium (Cr), copper (Cu), titanium (Ti), molybdenum (Mo), and tungsten (W). The gate electrode 133 may have a multi-layer structure.

The interlayer insulating layer 134 may be formed on the semiconductor pattern 131 and the gate electrode 133. The interlayer insulating layer 134 may extend outwardly of the semiconductor pattern 131. For example, the interlayer insulating layer 134 may be in direct contact with the buffer insulating layer outside the semiconductor pattern 131. The interlayer insulating layer 134 may include an insulating material. For example, the interlayer insulating layer 134 may include silicon oxide.

The source electrode 135 and the drain electrode 136 may be located on the interlayer insulating layer 134. The source electrode 135 may be electrically connected to the source region of the semiconductor pattern 131. The drain electrode 136 may be electrically connected to the drain region of the semiconductor pattern 131. For example, the interlayer insulating layer 134 may include an interlayer contact hole exposing the source region of the semiconductor pattern 131 and an interlayer contact hole exposing the drain region. The drain electrode 136 may be spaced apart from the source electrode 135.

The source electrode 135 and the drain electrode 136 may include a conductive material. The source electrode 135 and the drain electrode 136 may be formed of a metal such as Al, Cr, Cu, Ti, . ≪ / RTI > The drain electrode 136 may include the same material as the source electrode 135. The source electrode 135 may have a multi-layer structure. The structure of the drain electrode 136 may be the same as that of the source electrode 135. For example, the drain electrode 136 may have a multi-layer structure.

The display device according to the embodiment of the present invention is described as having the interlayer insulating film 134 positioned between the gate electrode 133 of the thin film transistor 130 and the source electrode 135 and the drain electrode 136. However, the display device according to another embodiment of the present invention may include the gate insulating film 132 positioned between the gate electrode 133 and the source electrode 135 and the drain electrode 136. [

The display device according to an exemplary embodiment of the present invention may further include an overcoat layer 140 disposed on the thin film transistor 130. The overcoat layer 140 may remove a stepped portion by the thin film transistor 130. For example, the upper surface of the overcoat layer 140 facing the lower substrate 110 may be a flat surface. The upper surface of the overcoat layer 140 may be parallel to the surface of the lower substrate 110. The overcoat layer 140 may include an insulating material. For example, the overcoat layer 140 may comprise an organic insulating material.

The light emitting structure 150 may implement a specific color. For example, the light emitting structure 150 may include a lower light emitting electrode 151, a light emitting layer 152, and an upper light emitting electrode 153 stacked in order.

The light emitting structure 150 may be controlled by the thin film transistor 130. For example, the lower light emitting electrode 151 of the light emitting structure 150 may be electrically connected to the drain electrode 136 of the thin film transistor 130. The light emitting structure 150 may be located on the overcoat layer 140. For example, the overcoat layer 140 may include an electrode contact hole exposing the drain electrode 136 of the thin film transistor 130.

The lower light emitting electrode 151 may include a conductive material. The lower light emitting electrode 151 may include a transparent conductive material. For example, the lower electrode 151 may include ITO and IZO.

The light emitting layer 152 may generate light having a luminance corresponding to a voltage difference between the lower light emitting electrode 151 and the upper light emitting electrode 153. For example, the light emitting layer 152 may include an emitter material layer (EML) including a light emitting material. The light emitting material may include an organic light emitting material, an inorganic light emitting material, and a hybrid light emitting material. For example, the display device according to an embodiment of the present invention may be an organic light emitting display including a light emitting layer 152 of an organic light emitting material.

The light emitting layer 152 may have a multi-layer structure. For example, the light emitting layer 152 may include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer ). ≪ / RTI >

The upper light emitting electrode 153 may include a conductive material. The upper light emitting electrode 153 may include a material different from the lower light emitting electrode 110. For example, the upper luminescent electrode 153 may include a metal having a high reflectivity. Accordingly, in the display device according to the embodiment of the present invention, light generated by the light emitting layer 152 and traveling toward the upper light emitting electrode 153 may be reflected toward the lower light emitting electrode 151.

In the display device according to the embodiment of the present invention, adjacent pixel regions may implement different colors. For example, the display device according to an exemplary embodiment of the present invention may include a pixel region that emits blue light, a pixel region that emits red light, a pixel region that emits green light, and a pixel region that emits white light. The light emitting structures 150 located on adjacent pixel regions can be independently controlled. For example, the display device according to the embodiment of the present invention may further include a bank insulating layer 160. The bank insulating layer 160 may isolate the lower light emitting electrode 151 of each light emitting structure 150 from adjacent pixel regions. For example, the bank insulating layer 160 may cover the edge of the lower light emitting electrode 151 of each light emitting structure 150. The light emitting layer 152 and the upper light emitting electrode 153 may be stacked on the surface of the lower light emitting electrode 151 exposed by the bank insulating layer 160. The bank insulating layer 160 may include an insulating material. For example, the bank insulating layer 160 may include an organic insulating material such as benzocyclobutene (BCB), polyimide, and photo acryl.

The display device according to an exemplary embodiment of the present invention may further include a top protective layer 170 located on the light emitting structure 150. The upper protective layer 170 may protect the light emitting structure 150 from external moisture or oxygen. The upper protective layer 170 may include an insulating material. For example, the upper protective film 170 may be a laminated structure of an organic film including an organic material and an inorganic film containing an inorganic material.

An adhesive layer 180 may be disposed between the second substrate 120 and the upper protective layer 170. The adhesive layer 180 may have a multi-layer structure. For example, the adhesive layer 180 may include a lower adhesive layer 181 and an upper adhesive layer 182.

The lower adhesive layer 181 may be located near the lower substrate 110. The upper protective layer 170 may be in direct contact with the lower adhesive layer 181. The lower adhesive layer 181 may include a curable material. For example, the lower adhesive layer 181 may include a resin such as an epoxy, a penol, an amino, an unsaturated polyester, an olefin, or the like. The lower adhesive layer 181 may include a thermosetting resin.

The upper adhesive layer 182 may be positioned on the lower adhesive layer 181. The upper adhesive layer 182 may comprise a curable material. For example, the upper adhesive layer 182 may include a thermosetting resin. The upper adhesive layer 182 may include a material different from the lower adhesive layer 181.

The upper adhesive layer 182 may further include a moisture absorbing material 182p. The moisture-absorbing material 182p can collect moisture permeating from the outside. The lower adhesive layer 181 can alleviate the stress caused by the expansion of the hygroscopic material 182p located in the upper adhesive layer 182. Accordingly, the display device according to the embodiment of the present invention can effectively prevent the infiltration of moisture from the outside.

The display device according to the embodiment of the present invention may include a data driver for supplying a data signal to the display panel 100. [ The data driver may include source driver ICs 220 connected to the display panel 100 through the source flexible films 210 and the source flexible films 210. For example, each source drive IC 220 may be mounted on a corresponding source flexible film 210. Each source drive IC 220 may convert digital biodata into gamma voltages to generate data signals. The data driver may further include a source printed circuit board 200 connected to the display panel 100 through the source flexible films 210.

Each source flexible film 210 may be connected to one of the pads 105 positioned on the inner surface of the first substrate 110, respectively. For example, the source flexible films 210 may be connected to the pads 150 located outside the first side 121S of the second substrate 120. [ The length of the first side 121S of the second substrate 120 may be longer than the length of the third side 123S of the second substrate 120. [

The source flexible films 210 may extend on the outer surface of the second substrate 120 along the first side 121S of the second substrate 120. [ For example, the source printed circuit board 200 may be located on the outer surface of the second substrate 120. The source flexible films 210 may be connected to the source printed circuit board 200 on the second substrate 120.

The display device according to the embodiment of the present invention may include a scan driver for sequentially supplying scan signals to the display panel 100. [ The scan driver may include gate drive ICs 320 connected to the display panel 100 through the gate flexible films 310 and the gate flexible films 310. For example, each gate drive IC 320 may be mounted on a corresponding gate flexible film 310. The gate drive ICs 320 may include a level shifter and a shift register, respectively.

Each of the gate flexible films 310 may be connected to one of the pads 105 positioned on the inner surface of the first substrate 110. For example, the gate flexible films 310 may be connected to the pads 105 located outside the third side 123S and the fourth side 124S of the second substrate 120 .

The gate flexible films 310 may extend along the third side 123S or the fourth side 124S of the second substrate 120 onto the outer surface of the second substrate 120 . The gate flexible films 310 may be spaced apart from the source flexible films 210.

The display device according to the embodiment of the present invention may further include a timing controller. The timing controller may generate and supply timing control signals for controlling operation timings of the gate driver and the data driver. For example, the timing controller may be connected to the source printed circuit board 200 through a signal cable such as a flexible flat cable (FFC) or a flexible printed circuit board (FPCB).

A display device according to an embodiment of the present invention may include an optical film 400 positioned on the outer surface of the first substrate 110. [ The optical film 400 can prevent reflection of light incident from the outside. For example, the optical film 400 may include a polarizing material. Accordingly, the quality of the implemented image can be improved in the display device according to the embodiment of the present invention.

The optical film 400 may extend along the second side 122S of the second substrate 120 onto the outer surface of the second substrate 120. [ For example, the optical film 400 may include a first region 401 positioned on an outer surface of the first substrate 110, a second region 402 positioned on the second side 122S of the second substrate 120, And a third region 403 located on the outer surface of the second substrate 120. The second region 402 may include a first region 402 and a third region 403. The second side 122S of the second substrate 120 may be covered by the second region 402 of the optical film 400. [ An air gap AG may be positioned between the second side 122s of the second substrate 120 and the second region 402 of the optical film 400. [ The third region 403 of the optical film 400 may be in direct contact with the outer surface of the second substrate 120. The second side surface 122S of the second substrate 120 not facing the pads 105 is pulled toward the first substrate 110 by the optical film 400 . Therefore, in the display device according to the embodiment of the present invention, the first substrate 110 and the second side surface 122S of the second substrate 120 can be kept in close contact with each other by the optical film 400.

The display device according to the embodiment of the present invention may further include a moisture-proof adhesive layer 500 positioned on the side surfaces 121S, 123S, and 124S of the second substrate 120 facing the pad. For example, the moisture-proof adhesive layer 500 may directly contact the first side surface 121S, the third side surface 123S, and the fourth side surface 124S of the second substrate 120. The moisture-proof adhesive layer 500 may directly contact the inner surface of the first substrate 110. The moisture-proof adhesive layer 500 may extend on the outer surface of the second substrate 120. For example, the source printed circuit board 200 may be fixed on the outer surface of the second substrate 120 by the moisture-proof adhesive layer 500. Accordingly, in the display device according to the embodiment of the present invention, the side surfaces 121S, 123S and 124S of the second substrate 120 facing the pad can be pulled toward the first substrate 110 by the moisture-proof adhesive layer 500 . Therefore, in the display device according to the exemplary embodiment of the present invention, the first side surface 121S, the third side surface 123S, and the fourth side surface 123B of the first substrate 110 and the second substrate 120 are bonded by the moisture- (124S) can be maintained in a close contact state.

As a result, the display device according to the embodiment of the present invention is configured such that the second side surface 122S of the second substrate 120, which does not face the pads located on the first substrate 110, The adhesion between the first substrate 110 and the second substrate 120 is maintained and the reliability and lifetime can be improved by preventing lifting between the first substrate 110 and the second substrate 120 even in a curved state.

The display device according to the embodiment of the present invention is described as having an air gap AG between the optical film 400 and the second side 122S that does not face the pad of the second substrate 120. [ 3, the display device of the present invention may further include a side insulating film 600 positioned between the second side 122S of the second substrate 120 and the optical film 400 have. The side insulating layer 600 may include an insulating material. For example, a curable material. The side insulating layer 600 may be in direct contact with the second substrate 120 and the optical film 400. For example, the side insulating layer 600 may include an adhesive material. The adhesive material of the side insulating layer 600 may be different from the adhesive material of the moisture-proof adhesive layer 500. The side insulating film 600 can collect moisture permeating from the outside. For example, the side insulating layer 600 may include a moisture absorbing material. Accordingly, the reliability and lifetime of the display device according to the embodiment of the present invention can be effectively improved.

The display device according to another embodiment of the present invention is described as a side insulating film 600 located only between the second side 122S of the second substrate 120 and the optical film 400. [ 5, a side insulating film 600 is formed on the outer surface of the second substrate 120 and the third region 403 of the optical film 400. However, in the display device according to another embodiment of the present invention, Respectively. For example, the side insulating layer 600 may include a first portion 601 positioned between a second side 122S of the second substrate 120 and a second region 402 of the optical film 400, And a second portion 602 positioned between the outer surface of the second substrate 120 and a third region 403 of the optical film 400. Accordingly, in the display device according to another embodiment of the present invention, lifting between the first substrate 110 and the second substrate 120 can be effectively prevented.

110: first substrate 120: second substrate
130: Thin film transistor 150: Light emitting structure
210: source flexible film 220: source drive IC
310: gate flexible film 320: gate drive IC
400: optical film 500: moisture-proof adhesive layer
600: side insulating film

Claims (11)

A first substrate comprising pads;
A second substrate bonded to the first substrate and including a first side facing the pads and a second side facing the first side; And
And an optical film located on an outer surface of the first substrate and extending on an outer surface of the second substrate along the second side of the second substrate. The method according to claim 1,
Wherein a distance between the second side of the second substrate and a side adjacent to the second side of the first substrate is a distance between the first side of the second substrate and a side adjacent to the first side of the first substrate, Smaller display device. The method according to claim 1,
And a side insulating film located between the second side of the second substrate and the optical film. The method of claim 3,
Wherein the side insulating film comprises a moisture absorbing material. The method of claim 3,
Wherein the side insulating film is in direct contact with the second substrate and the optical film. 6. The method of claim 5,
Wherein the side insulating film comprises an adhesive material. The method of claim 3,
And the side insulating film extends between the outer surface of the second substrate and the optical film. The method according to claim 1,
Wherein the optical film comprises a polarizing material. A display panel including a first substrate and a second substrate having a smaller area than the first substrate;
A flexible film located on an outer surface of the second substrate and extending on an inner surface of the first substrate along a first side of the second substrate; And
An optical film positioned on an outer surface of the first substrate and extending onto the outer surface of the second substrate,
Wherein the optical film covers a second side face of the second substrate facing away from the first side face. 10. The method of claim 9,
A moisture-impermeable adhesive layer positioned between the outer surface of the second substrate and the flexible film and extending on the first side of the second substrate; And
And a side insulating film disposed between the second side surface of the second substrate and the optical film,
Wherein the side insulating layer comprises a material different from the moisture-proof adhesive layer. 11. The method of claim 10,
Wherein a length of a contact area between the first substrate and the moisture-proof adhesive layer is larger than a distance between the second side of the second substrate and the optical film.

Images