KR20150033969A - Curved display device and method for forming a curved surface the same - Google Patents

Abstract

The present invention relates to a curved display device. The present invention relates to a curved display device capable of easily forming the curved surface of a panel and a cover window, and a method for forming a curved surface of the same. To form the cover window and the edge part of an OLED panel, a heating film including nanomagnetic particles is used and a thermal process is performed on a specific part at a short time. Thus, it can form easily the edge part with a curved shape, minimizing damage to an OLED panel and process time. Especially, the OLED panel can be certainly attached to the cover window without the generation of voids and separation. It can prevent the generation of a haze or image distortion phenomenon due to voids and separation between the cover window and the curved panel in an edge-curved display device. Thus, defect rate is reduced so that workability and productivity can be improved. The increase of process cost and time can be prevented. Process efficiency is improved. The reliability of products can be improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a curved display device and a method of forming a curved surface,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved surface display device, and more particularly, to a curved surface display device capable of more easily forming a cover window and a curved surface of a panel, and a curved surface forming method thereof.

In recent years, as the society has become a full-fledged information age, a display field for processing and displaying a large amount of information has rapidly developed, and various flat panel display devices have been developed in response to this.

Specific examples of such flat panel display devices include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) (ELD), organic light emitting diodes (OLED), and the like. These flat panel display devices are excellent in performance of thinning, light weight, and low power consumption, and can be applied to a conventional cathode ray tube ).

In recent years, a curved display device has been rapidly emerging as a next generation display device, in which the user further improves the immersion and the image becomes more realistic and the user feels comfortable.

Among such curved display devices, research on an edge curved display device capable of realizing images on both the front and side surfaces as shown in Figs. 1A to 1B has been actively conducted.

Such curved display devices have advantages of space utilization, interior and design, and can have various application fields.

However, the curved display device has a haze phenomenon or an image distortion phenomenon due to the refractive index deviation due to the bubbles and lifting of the panel and the cover window in the curved surface portion in the course of forming the curved surface.

Particularly, such a defect rate is high, and workability and productivity are lowered. When such defects occur, the repair process itself is difficult, and all the defective display devices must be discarded (discarded) The process time is increased, and the efficiency of the process is remarkably lowered.

This, in turn, lowers the reliability of the product.

SUMMARY OF THE INVENTION It is a first object of the present invention to provide a method of manufacturing a curved display device in which haze phenomenon and image distortion phenomenon do not occur.

A second object of the present invention is to improve process efficiency and product reliability.

In order to achieve the above object, the present invention provides a display device comprising a cover window, a display panel under the cover window, Placing a heating film on the cover window; Irradiating a high frequency induction magnetic field with the heat generating film; Forming a first curved portion which is transmitted to the cover window and is curved at least a part of the cover window; And forming a second curved surface portion on the display panel along the first curved surface portion of the cover window.

At this time, the heat generating film includes nano-magnetic particles, and the heat generating film is positioned corresponding to the first curved surface portion.

A pressing jig having a fourth curved surface portion corresponding to the second curved surface portion is positioned under the display panel, and a pressing jig having a third curved surface portion corresponding to the first curved surface portion is positioned on the cover window. , The cover window and the display panel are pressed by the variable jig and the pressing jig, and are formed to have the first and second curved portions corresponding to the third and fourth curved portions.

The nano-magnetic particles are composed of a core including a magnetic material and a shell surrounding the core. The nano-magnetic particles are dispersed in a base film, and the magnetic material includes iron (Fe ), Cobalt (Co), nickel (Ni), chromium (Cr), yttrium (Y), samarium (Sm), and gadolinium (Gd), or one of Fe3O4 and Fe2O3.

Here, the magnetic material is contained in the core in an amount of 5 to 100% by weight, and the shell is made of one of ZrO2, TiO2, Al2O3, CeO2, and SiO2.

A fixing groove is formed on the outer side of the fourth curved surface portion of the pressing jig so that the edge of the display panel can be inserted and inserted into the fixing groove, In the process of pressing the cover window and the display panel, the edge of the display panel is inserted into the fixing groove and fixed.

Further, the variable jig is deformed to have a curved shape to be formed by the bearing.

According to another aspect of the present invention, there is provided a display device comprising: a display panel including a front surface on which an image is formed, and at least one edge portion formed of a first curved surface portion extending in a curved shape from the front surface; A cover window disposed on the display panel and having a second curved surface portion corresponding to the first curved surface portion of the display panel; And a guide frame disposed at a lower portion of the display panel and modularizing the display panel together with the cover window, wherein the image is implemented by the front surface portion and the first curved surface portion.

As described above, according to the present invention, in forming the edge portion of the cover window and the edge portion of the OLED panel in a curved shape, heat is applied only to a specific portion in a short time using a heat generating film including nano- The OLED panel can be formed in a curved shape while minimizing heat damage to the OLED panel and minimizing the processing time.

Particularly, since the OLED panel and the cover window can be adhered to each other completely without bubbling or squeezing, a haze phenomenon or an image distortion phenomenon occurs in the curved surface portion between the panel and the cover window due to bubbles or lifting There is an effect that it can be prevented.

As a result, the defective rate is lowered, thereby improving the workability and productivity, preventing the problem of increased process cost and process time, improving the efficiency of the process, and improving the reliability of the product.

1A and 1B are photographs showing an edge curved display device.
FIG. 2 is an exploded perspective view schematically showing a curved display device according to an embodiment of the present invention. FIG.
3 is a cross-sectional view schematically showing a heat generating film according to an embodiment of the present invention.
FIG. 4 is a graph showing the results of measurement of the change in the exotherm of the magnetic nanoparticles of Examples 1, 2, 3, and 4 with time and concentration. FIG.
FIG. 5 is a graph showing an experiment result obtained by measuring changes in high frequency and temperature with time in the heat generating film of Example 4. FIG.
6A to 6C are cross-sectional views illustrating a process of forming a curved edge portion of an OLED panel and a cover window according to an exemplary embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

2 is an exploded perspective view schematically showing a curved display device according to an embodiment of the present invention.

As shown in the figure, the curved display device 100 includes a display panel 110 for largely implementing an image, a guide frame 130 for accommodating the display panel 110, And a cover window (120).

Here, the display panel 110 may be a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) Electroluminescence Display Device (ELD) or Organic Light Emitting Diode (OLED). It is possible to use OLED, which is a representative of a flexible display device capable of maintaining display performance even if bent like paper desirable.

The OLED is a self-luminous element and can be lightweight and thin because a backlight used in a liquid crystal display device which is a non-luminous element is not required.

In addition, it has a better viewing angle and contrast ratio than liquid crystal display devices, is advantageous in terms of power consumption, can be driven by DC low voltage, has a fast response speed, is resistant to external impacts due to its solid internal components, It has advantages.

Particularly, since the manufacturing process is simple, it is advantageous in that the production cost can be saved more than the conventional liquid crystal display device.

The OLED panel 110 includes a first substrate 111 and a second substrate 112 facing the first substrate 111. The first and second substrates 111 and 112 have adhesiveness And are adhered to each other through a protective layer (not shown).

Although not shown, a driving TFT is formed for each pixel region on the first substrate 111, and a first electrode connected to each driving thin film transistor and a first electrode connected to each driving TFT, An organic light emitting layer for emitting light, and a second electrode on the organic light emitting layer.

The organic light emitting layer displays red, green, and blue colors. As a general method, a separate organic material emitting red, green, and blue light is patterned for each pixel.

The first and second electrodes and the organic light emitting layer formed therebetween form a light emitting diode. At this time, the OLED panel 110 having such a structure has the first electrode as an anode and the second electrode as a cathode.

The OLED panel 110 is connected to a printed circuit board 117 for supplying driving signals and a flexible circuit board 115 for connecting the OLED panel 110 to the printed circuit board 117.

Although not shown, the OLED panel 110 further includes a polarizing member for suppressing external light reflection.

Here, the curved display device 100 of the present invention is an edge curved display device in which both edges of the OLED panel 110 are curved. In other words, the OLED panel 100 is a flat type display device, A and two curved edge portions B extending from the front portion A in a curved shape.

And the image is also realized in both curved edge portions (B).

The OLED panel 110 is finally modularized through the guide frame 130 and the cover window 120. The guide frame 130 has a shape covering the back and side portions of the OLED panel 110, So as to display an image to be implemented in the OLED panel 110.

A cover window 120 for protecting the OLED panel 110 is assembled to the open front face of the guide frame 130. The cover window 120 is also curved at both edges such as the OLED panel 110 And adhered to the OLED panel 110 using a double-sided adhesive tape (not shown).

Since the OLED panel 110 and the cover window 120 are completely adhered to each other without bubbling or squeezing between the OLED panel 110 and the cover window 120 in the curved surface portion B of the edge curved display device, It is possible to prevent a haze phenomenon or an image distortion phenomenon from occurring due to bubbling or lifting.

This also improves the efficiency of the process.

The cover window 120 may be made of a transparent material such as glass or plastic.

Since the edge curved display device 100 according to the present invention is formed of the curved surface portion B having two curved edge portions facing each other, the user can further improve the degree of immersion and make the image more realistic, The user can feel comfortable and the image can be realized at the edge portion, which can improve the space utilization, interior and design advantages, and can have various application fields.

Particularly, since the damage to the OLED panel 110 by heat is minimized and the OLED panel 110 and the cover window 120 are adhered to each other completely without bubbling or lifting, It is possible to prevent a haze phenomenon or an image distortion phenomenon from occurring between the OLED panel 110 and the cover window 120 by bubbling or lifting.

As a result, the defective rate is lowered, thereby improving the workability and productivity, preventing the problem that the process cost and the process time are increased, improving the efficiency of the process, and improving the reliability of the product.

This is because the OLED panel 110 and the curved portion B of the cover window 120 are formed using the heat generating film 140 (see FIG. 3).

FIG. 3 is a cross-sectional view schematically showing a heat-generating film according to an embodiment of the present invention. FIG. 4 is a graph showing the results of experiments 1, 2, 3 and 4 in which the change in superheated magnetic nano- Graph.

5 is a graph of an experimental result obtained by measuring changes in high frequency and temperature with time in the exothermic film of Example 4. FIG.

3, the heat generating film 140 has a structure in which nano magnetic particles 143 are contained in a base film 141, wherein the base film 141 is made of polyimide or polyester a polyester-based material, a silicone-based material, or the like may be used.

The base film 141 preferably has a relatively high heat resistance and has a flexible property. The base film 141 may be made of a material such as a silicone rubber, a polyimide elastic material, a silicone, a polyimide composite material or the like so as to have high heat resistance and high elasticity It is preferable that the film is formed in the form of a film. When the high frequency induction magnetic field is irradiated, the nanomagnetic particles 143 have a property of rapidly raising the temperature due to the friction due to the magnetic field and generating heat, and are dispersed evenly in the base film 141. The nanomagnetic particles 143 may have a structure including a core 143a containing a metal component and a shell 143b having a hydrophobic property.

In other words, for example, the nano-magnetic particles 143 include a core 143a containing iron (Fe) as the magnetic substance material 145 and a plurality of surfactant (s) combined with the core 143a to surround the core 143a And a shell 143b made of the same material.

Here, the magnetic substance material 145 can be classified into paramagnetic, anti-ferromagnetic, and ferromagnetic depending on the characteristics and structure of the material. Among them, the magnetic substance material 145 is made of nano-sized fine particles to have super paramagnetic properties It is desirable to maximize.

The magnetic substance material 145 may include oxides of cobalt (Co), nickel (Ni), chromium (Cr), yttrium (Y), samarium (Sm), gadolinium (Gd) Fe3O4 and Fe2O3 containing a small amount of Mg, Cu, Mn, and Zn.

The shell 143b may be made of a material such as ZrO2, TiO2, Al2O3, CeO2, or SiO2. The shell 143b prevents oxidation of the magnetic material 145 of the core 143a, And serves as an insulator that minimizes the electrical properties of the magnetic substance material 145.

It also acts as an encapsulation that is not affected by magnetic fields. Particularly, in the case of nanoparticles, self-agglomeration is strong due to van der Waals attraction or external magnetic field, and it plays a role to solve this problem.

At this time, the content of the magnetic substance material 145 of the core 143a is not particularly limited, but is preferably 5 to 100% by weight.

By dispersing the magnetic material 145 of the core 143a and the multi-walled CNT (MWCNT) in an aqueous or alcoholic system and enclosing the inorganic acid quality of the core 143a with a sol-gel method, Thereby completing the particles 143.

Here, the magnetic substance material 145 is formed by a magnetic field through an alternating magnetic field, and when the direction of the electric field is changed, the direction of the magnetic field is also changed. The magnetic substance material 145 generates a pulse at the rate of change of the electric field, Thereby controlling the intensity of the light.

When the external magnetic field 145 disappears, the magnetic susceptibility of the magnetic substance material 145 becomes zero, which is the ratio of magnetization to the intensity of the magnetic field.

Accordingly, the magnetic moments of the magnetic substance material 145 are changed by changing the direction of the electric field, and the domain is rotated through this to generate frictional heat to generate heat.

Using this principle, the characteristic of the magnetic substance material 145 generates frictional heat by spin.

That is, in the heat generating film 140 of the present invention, the nano magnetic particles 143 are heated by an alternating magnetic field applied from the outside.

≪ Example 1 >

40 g of liquid polyimide (PI) monomer, 0.4 g of super fine magnetic particles as a magnetic substance and 1 g of multiwall (MWCNT) were homogenized and then homogenized by cold ultrasonic wave for 15 minutes in a glass beaker.

Thereafter, a thin film is formed by a casting method, which is pre-baked for 10 minutes, hard-bake at 230 ° C, and irradiated with ultraviolet rays (UV) Was fully cured to form a film.

≪ Example 2 >

40 g of liquid polyimide (PI) monomer, 0.8 g of super fine magnetic particles as magnetic substance and 1 g of multiwall (MWCNT) were homogenized and then homogenized by cold ultrasonic wave for 15 minutes in a glass beaker.

Thereafter, a thin film is formed by a casting method, which is pre-baked for 10 minutes, hard-bake at 230 ° C, and irradiated with ultraviolet rays (UV) Was fully cured to form a film.

≪ Example 3 >

The glass beaker was homogenized by mixing 40 g of liquid polyimide (PI) monomer, 1.2 g of super fine magnetic particles as a magnetic substance, and 1 g of multiwall (MWCNT), followed by homogenization by cold ultrasonic wave for 15 minutes.

Thereafter, a thin film is formed by a casting method, which is pre-baked for 10 minutes, hard-bake at 230 ° C, and irradiated with ultraviolet rays (UV) Was fully cured to form a film.

<Example 4>

40 g of liquid polyimide (PI) monomer, 2.0 g of magnetic microparticles as a magnetic substance and 1 g of multiwall (MWCNT) were homogenized and then homogenized by cold ultrasonic wave for 15 minutes in a glass beaker.

Thereafter, a thin film is formed by a casting method, which is pre-baked for 10 minutes, hard-bake at 230 ° C, and irradiated with ultraviolet rays (UV) Was fully cured to form a film.

The graphs of Table 1 and FIG. 4 show the results of experiments 1, 2, 3, and 4, in which the change of the superhetero-magnetic nanoparticles as the magnetic material 145 and the change of the heat generation with time were measured.

Time (s) 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 content 0.4 g 22 25 30 31 36 40 42 48 51 53 55 59 60 62 63 65 0.8 g 22 30 37 45 51 59 63 70 72 76 80 82 87 90 91 93 1.2 g 22 35 43 55 65 75 86 90 95 100 105 110 113 118 120 121 2.0 g 22 39 27 72 90 108 120 127 135 140 147 155

Referring to Table 1 and FIG. 4, it can be seen that as the content of the super magnetic nanoparticles as the magnetic material 145 in the heat generating film 140 is increased, the heat generation effect is improved with time.

The graph of FIG. 5 shows the results of the measurement of the change of the high-frequency and the temperature of the exothermic film of Example 4 over time.

The graph of FIG. 5 shows the result of measuring the temperature change over time by uniformly adhering the exothermic film 140 of Example 4 and changing the frequency of the high-frequency magnetic field.

Referring to FIG. 5, it can be seen that the exothermic effect of the heat generating film 140 is improved as the high frequency is higher.

The heat generating film 140 of the present invention is formed to include the nano-magnetic particles 143 including the magnetic substance material 145 so that when the high frequency induction magnetic field is irradiated, the temperature of the nano- So that it has a property of generating heat.

2) and the edges of the OLED panel (110 of FIG. 2) are formed in a curved shape, the heat-releasing film 140 can be easily The edge portion can be formed by the curved portion (B in Fig. 2), and damage to the OLED panel (110 in Fig. 2) can be minimized and the processing time can be minimized.

That is, by forming the cover window (120 in FIG. 2) and the edge portion of the OLED panel (110 in FIG. 2) in a curved shape by using the heat generating film 140 having such properties, 110) and the cover window (120 in Fig. 2) of the OLED panel (110 in Fig. 2) can be completely adhered to each other without bubbling or squeezing. Thus, the edge curved display device It is possible to prevent the haze phenomenon or the image distortion phenomenon from occurring between the OLED panel (110 in Fig. 2) and the cover window (120 in Fig. 2) in the curved surface portion .

As a result, the defective rate is lowered, thereby improving the workability and productivity, preventing the problem that the process cost and the process time are increased, improving the efficiency of the process, and improving the reliability of the product.

Here, the process of forming the curved surface of the OLED panel and the cover window will be described in detail with reference to FIGS. 6A to 6C.

6A to 6C are cross-sectional views illustrating a process of forming a curved edge portion of an OLED panel and a cover window according to an exemplary embodiment of the present invention.

6A, the variable jig 150 is formed to have a curved first curved surface portion C to be formed on the OLED panel 110 and the cover window 120, 150, the cover film 120, and the OLED panel 110 in sequence.

The variable jig 150 can be easily deformed to have a curved shape to be formed by the bearing 151 or the like.

Here, the heat generating film 140 includes nanomagnetic particles (143 in FIG. 3) including a magnetic material (145 in FIG. 3), and has a property of rapidly raising the temperature due to the frictional heat energy through the high frequency induction magnetic field .

It is preferable that the heat generating film 140 is positioned corresponding to a position where the cover window 120 and the OLED panel 110 are to be curved. The heat generating film 140 is positioned in correspondence with the edge of the cover window 120 and the OLED panel 110 in order to form the curved edge portion.

A double-sided adhesive tape (not shown) is interposed between the cover window 120 and the OLED panel 110.

Then, the pressure jig 160 having a frame of a shape to be formed is positioned below the OLED panel 110.

That is, one side of the pressing jig 160 facing the OLED panel 110 corresponds to the curved shape to be formed on the cover window 120 and the OLED panel 110, and the edge portion extending from the flat side D ' And a fixing groove 161 is formed at the outer side of the second curved portion D to fix the edge of the OLED panel 110 by inserting and fixing the edge portion of the second curved portion D .

6 (b), the cover window 120 and the OLED panel 110 are brought into close contact with the variable jig 150 by pressing the pressing jig 160 toward the variable jig 150. Next, as shown in Fig. At this time, the OLED panel 110 is completely adhered to the cover window 120 through the double-sided adhesive tape (not shown) positioned between the OLED panel 110 and the cover window 120 without bubbles or lifting.

At the same time, the heating film 140 is exposed to the magnetic field through the high frequency induction device 170 in correspondence with the edge portions of the cover window 120 and the OLED panel 100.

3) of the nano-magnetic particles 143 in the heating film 140 generates frictional heat by the spin, and the generated frictional heat is transmitted to the cover window 120 through the heating film 140 do.

The cover window 120 is softened by the heat transferred from the heat generating film 140 to the first and second curved portions 150 and 150 of the pressing jig 160, C, and D to form curved edges.

The edge of the OLED panel 110 is curved according to the shape of the cover window 120 by the pressure applied through the pressing jig 160. [

The edge of the curved edge of the OLED panel 110 is inserted into the fixing groove 161 of the pressing jig 160 so that the OLED panel 110 and the cover window 120 are inserted into the fixing jig 150, And the shape of the pressing jig 160 is firmly fixed.

Thereafter, as shown in FIG. 6C, the variable jig 150 and the pressing jig 160 are removed to form a flat front surface A on which an image is formed, a curved shape from the front surface A, The cover window 120 and the OLED panel 110 of the edge curved display device (100 in FIG. 2) having two curved edge portions (B, = curved surface portions)

The completed cover window 120 and the OLED panel 110 are integrated together with the guide frame 130 (FIG. 2), thereby completing the edge curved display device 100 (FIG. 2).

2, the edge curved display device 100 of the present invention has a structure in which a cover window 120 having a curved edge shape is formed by injection molding in advance and then the OLED panel 110 is attached to the cover window 120 The cover window 120 and the OLED panel 110 can be more closely adhered to each other.

That is, the edge curved display device 100 of FIG. 2 of the present invention makes it possible to apply heat only to a specific region within a short time by using the heat generating film 140 including nanomagnetic particles 143 (FIG. 3) The edge portions of the cover window 120 and the OLED panel 110 are formed in a curved shape so that the edge portion can be easily formed into a curved surface portion B having a curved surface shape while minimizing heat damage to the OLED panel 110, Time can also be minimized.

Particularly, since the OLED panel 110 and the cover window 120 can be completely adhered to each other without bubbling or lifting, the curved surface portion B of the edge curved display device 100 (FIG. 2) It is possible to prevent haze phenomenon and image distortion phenomenon from occurring between the cover window 120 and the cover window 120 due to bubbling or lifting.

As a result, the defective rate is lowered, thereby improving the workability and productivity, preventing the problem that the process cost and the process time are increased, improving the efficiency of the process, and improving the reliability of the product.

In the above description, the edge curved display device 100 (see FIG. 2) in which only the edge portions of the cover window 120 and the OLED panel 110 are curved has been described as an example. However, The curved display device in which the display panel 120 and the front portion A of the OLED panel 100 are curved is also curved in the same manner as the cover window 120 and the OLED panel 110 through the heat generating film 140, The front surface portion A of the front surface can be formed as a curved surface.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

110: OLED panel
120: Cover window
140: Heating film
150: variable jig (151: bearing, C: first curved portion)
160: pressing jig (161: fixing groove, D ': flat surface, D: second curved surface portion)

Claims (12)

Preparing a display panel below the cover window;
Placing a heating film on the cover window;
Irradiating a high frequency induction magnetic field with the heat generating film;
Forming a first curved portion which is transmitted to the cover window and is curved at least a part of the cover window;
Forming a second curved portion on the display panel along a first curved portion of the cover window
Wherein the curved surface of the curved surface is curved.
The method according to claim 1,
Wherein the heat generating film includes nano-magnetic particles.
The method according to claim 1,
Wherein the heat generating film is positioned corresponding to the first curved surface portion.
The method according to claim 1,
A pressure jig having a fourth curved surface portion corresponding to the second curved surface portion is disposed under the display panel,
Wherein the cover window and the display panel are pressed by the variable jig and the pressing jig to have the first and second curved portions corresponding to the third and fourth curved portions, .
3. The method of claim 2,
Wherein the nanomagnetic particles are composed of a core including a magnetic material and a shell surrounding the core, wherein the nanomagnetic particles are dispersed in a substrate film.
6. The method of claim 5,
The magnetic material may include one of oxides of iron (Fe), cobalt (Co), nickel (Ni), chromium (Cr), yttrium (Y), samarium (Sm), gadolinium (Gd), Fe3O4, Fe2O3 Wherein the curved surface of the curved surface display device is curved.
The method according to claim 6,
Wherein the magnetic material is contained in the core in an amount of 5 to 100% by weight.
6. The method of claim 5,
Wherein the shell is made of one of ZrO2, TiO2, Al2O3, CeO2, and SiO2.
The method according to claim 1,
Wherein a double-sided adhesive tape is interposed between the cover window and the display panel.
5. The method of claim 4,
A fixing groove is formed on an outer side of the fourth curved surface portion of the pressing jig so that an edge of the display panel can be inserted into the fixing groove,
Wherein the edge of the display panel is inserted into and fixed to the fixing groove in a process of pressing the cover window and the display panel.
5. The method of claim 4,
Wherein the variable jig is deformed to have a curved shape to be formed by a bearing.
A display panel including a front portion on which an image is implemented and at least one edge portion formed by a first curved portion extending in a curved shape from the front portion;
A cover window disposed on the display panel and having a second curved surface portion corresponding to the first curved surface portion of the display panel;
And a guide frame disposed at a lower portion of the display panel and modularizing the display panel together with the cover window,
Wherein the image is implemented by the front surface portion and the first curved surface portion.

Images