KR20170080253A - Display device having functional panel and mehtod of fabricating thereof - Google Patents

Abstract

In the present invention, the display panel and the guide panel for supporting and assembling the functional panel are provided with protrusions that contact the functional panel. When the functional panel and the display panel are attached to each other, pressure is applied until the functional panel contacts the protrusion, The thickness of the adhesive layer for bonding the panel and the functional panel is always kept constant.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a display device having a functional panel,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device having a functional panel capable of reducing process and manufacturing costs when a functional panel and a display panel are attached together, and a manufacturing method thereof.

2. Description of the Related Art In recent years, various portable electronic devices such as a mobile phone, a tablet PC, and a notebook computer have been developed and counter electronic devices have been developed, so that a demand for a flat panel display device for a light and small size is gradually increasing. As such flat display devices, liquid crystal display devices, organic electroluminescent display devices, electrophoretic display devices and the like have been actively studied.

On the other hand, personal computers, portable communication devices, and other personal-purpose information processing devices generally have an interface with a user by using various input devices such as a keyboard, a mouse, and a digitizer. However, as the development of portable electronic devices has expanded, input devices such as a keyboard and a mouse can not be input to a portable electronic device, and a touch panel (Touch Panel is attached to a display panel to facilitate user input of information.

In addition, a display device that provides a three-dimensional (3-dimensional) stereoscopic image of a superspace realizing a realistic, three-dimensionally viewing and enjoying not a simple two-dimensional image but a space and time has been proposed. In such a stereoscopic image display device, a parallax barrier or a FPR (Film Patterned Retarder) for 3D is attached to the entire surface of the display panel to divide the image displayed on the display panel into a left eye image and a right eye image, The stereoscopic image is displayed by transmitting another image to the left and right eyes of the user.

As described above, the flat panel display panel can be used as a display device of various functions by attaching a cover glass to the front surface thereof as well as various functional panels such as a touch panel, a parallax barrier, or an FPR for 3D.

The display panel and the functional panel are bonded together by an adhesive made of a transparent adhesive resin or the like. Such adhesion is achieved by applying an adhesive resin to the display panel or the functional panel, followed by laminating by pressure and curing the adhesive resin.

Since the adhesive layer of the cemented display panel and the functional panel must always maintain a constant bonding force, the adhesive layer must always maintain a constant thickness. However, due to the pressure error applied when the display panel and the functional panel are bonded together due to the application of the pressure, the pressure difference between the display panel and the functional panel, and the viscosity error of the adhesive resin, the adhesive layer can not maintain a constant thickness. As a result, the adhesive layer becomes less than or equal to the set force, resulting in adhesion failure such as falling of the functional panel from the display panel due to an external impact or the like.

In addition, when the combining force is stronger than the set size or the viscosity of the adhesive resin is low, the adhesive resin may flow out to the outside of the display element upon adhering, and adhered resin may be adhered to the side surface of the display element.

In order to solve such a problem, a separate layer for confining the adhesive resin in a predetermined region along the edge region of the display panel or the functional panel is coated and then a liquid adhesive resin is applied to the region defined by the layer, It is possible to always apply the adhesive agent to a predetermined thickness and prevent the adhesive resin from flowing out of the display element.

However, in this case, there is a problem that the manufacturing process is complicated and the manufacturing process is delayed because a separate layer for applying the adhesive resin to only a limited area has to be formed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a display device capable of always forming an adhesive layer having a constant thickness by providing a projection panel in contact with a functional panel when a pressure is applied to a display panel and a functional panel, And a manufacturing method thereof.

In order to attain the above object, a display device according to the present invention includes a display panel and a protruding portion which is in contact with the functional panel on a guide panel for supporting and assembling the functional panel. When the functional panel and the display panel are cemented, The thickness of the adhesive layer for adhering the display panel and the functional panel is always kept constant by applying pressure until the functional panel contacts.

The functional panel includes a cover class, an FPR for 3D, a parallax barrier panel, and a touch panel, and the protrusions are disposed continuously or discontinuously along the guide panel.

According to another aspect of the present invention, there is provided a method of manufacturing a display device, including the steps of providing a guide panel having a protrusion, assembling a display panel with a guide panel, providing a functional panel, Applying a pressure to the functional panel until the functional panel comes into contact with the protruding portion to form an adhesive layer after attaching the display panel and the functional panel.

According to the present invention, when the protrusion is formed on the guide panel and the functional panel is attached to the display panel, the protrusion can prevent the excessive pressure from being applied between the functional panel and the display panel. It is possible to always form a constant thickness. Therefore, since the adhesive force is always provided to the functional panel and the display panel, it is possible to prevent the adhesion failure.

Further, in the present invention, since the projecting portion is formed integrally with the guide panel, a separate structure or process for integrally forming the adhesive layer is not required, and thus it is possible to effectively prevent an increase in manufacturing cost and a delay in the manufacturing process.

1 is a perspective view showing the structure of a display device according to the present invention;
2 is a cross-sectional view of a display device according to the present invention;
3C is a view showing the shape of a protrusion of a guide panel according to the present invention;
4 is a view showing a method of manufacturing a display device according to the present invention.
5A to 5D are views showing a process of attaching the display panel and the functional panel.

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

FIG. 1 is an exploded perspective view showing the structure of a liquid crystal display element according to the present invention, and FIG. 2 is a sectional view of the assembled liquid crystal display element. At this time, although the display element of the present invention is limited to the liquid crystal display element for convenience of explanation, the present invention is not limited to such a liquid crystal display element. The present invention can be applied to all currently known display devices such as an organic electroluminescent display device and an electrophoretic display device as well as a liquid crystal display device.

1 and 2, the liquid crystal display according to the present invention includes a liquid crystal panel 110 and a backlight.

The liquid crystal panel 110 includes a first substrate 101 and a second substrate 103, and a liquid crystal layer (not shown) between the first substrate 101 and the second substrate 103, and implements an image as a signal is applied from the outside.

The backlight includes a plurality of LEDs (Light Emitting Device) 134 disposed on the lower side of the liquid crystal panel 110 to emit light and a plurality of LEDs 134 disposed below the liquid crystal panel 110 to emit light A light guide plate 135 for guiding the liquid crystal panel 110 to the liquid crystal panel 110 and supplying the liquid crystal panel 110 to the liquid crystal panel 110 and a light guide plate 135 disposed between the liquid crystal panel 110 and the light guide plate 135, An optical sheet 138 including a diffusing sheet 138a and prism sheets 138b and 138c for collecting and condensing the light reflected from the light guide plate 135 and a reflection plate 136 ).

In the figure, a plurality of LEDs 134 are mounted on the LED substrate 132 and disposed only on one side of the light guide plate 135 to supply light to the liquid crystal panel 110 through the light incident surface of one side, May be mounted on both sides of the light guide plate 135 to supply light to the liquid crystal panel 110 through the light incident surfaces on two sides.

The reflection plate 136, the light guide plate 135 and the optical sheet 138 of the backlight are housed in the lower cover 140 and then assembled as the lower cover 140 and the guide panel 142 are coupled.

The guide panel 142 is formed with two steps 142a and 142b and the liquid crystal panel 110 is placed on the first step 142a at the lower end. The guide panel 142 is formed in a rectangular shape so that the edge region of the liquid crystal panel 110 is placed on the first step 142a of the guide panel 142 and the backlight is assembled with the liquid crystal panel 110, Is completed.

The liquid crystal panel 110 is not provided with an engagement portion to be coupled to the lower cover 140 and the guide panel 142 but an upper cover is disposed in an upper edge region of the liquid crystal panel 110, By being coupled with the guide panel 142, the backlight can be assembled with the liquid crystal panel 110.

Though not shown in the figure, a plurality of gate lines and data lines are vertically and horizontally arranged on the first substrate 101 to define a plurality of pixel regions, and a thin film transistor serving as a switching element is formed in each pixel region A pixel electrode formed on the pixel region is formed. The thin film transistor includes a gate electrode connected to a gate line, a semiconductor layer formed by stacking amorphous silicon or the like on the gate electrode, and a source electrode and a drain electrode formed on the semiconductor layer and connected to the data line and the pixel electrode .

The second substrate 102 includes a color filter composed of a plurality of sub-color filters embodying colors of red (R), green (G) and blue (B) And a black matrix for blocking light passing through the liquid crystal layer.

The first substrate 101 and the second substrate 102 constituted as described above are adhered to each other by a sealant (not shown) formed on the periphery of the image display region to constitute a liquid crystal panel, and the first substrate 101 (Not shown) formed on the first substrate 101 or the second substrate 102. As shown in FIG.

A first polarizer 112 and a second polarizer 114 are attached to the first substrate 101 and the second substrate 102 to polarize the light input to and output from the liquid crystal panel 110, .

On the other hand, when an organic light emitting display panel is used as a display panel instead of a liquid crystal panel, an organic light emitting layer that emits light by itself is provided in the display panel 110. When an electrophoretic display panel is used as a display panel, Inside the display panel 110, an electrophoretic layer for reflecting light incident from the outside and realizing an image is provided.

The light guide plate 135 guides the light emitted from the LED 134 to the liquid crystal panel 110. The light incident on one side of the light guide plate 135 is reflected on the upper and lower surfaces of the light guide plate 135, And then outputted to the outside of the light guide plate 135. At this time, the light guide plate 135 is formed of a rectangular parallelepiped, and a pattern or a groove may be formed on the bottom surface thereof in order to scatter incident light.

The optical sheet 138 is supplied to the liquid crystal panel 110 by improving the efficiency of light output from the light guide plate 135. The optical sheet 138 includes a diffusion sheet 138a for diffusing the light output from the light guide plate 138 and a first diffusion sheet 138a for condensing light diffused by the diffusion sheet to supply uniform light to the liquid crystal panel 110. [ A prism sheet 138b and a second prism sheet 138c. At this time, the diffusion sheet 138a is provided with one sheet, but the prism sheet includes a first prism sheet 138b and a second prism sheet 138c in which the prism crosses vertically in the x-, y- The light is refracted in the axial direction to improve the linearity of the light.

A light shielding tape 147 is disposed on the upper surface of the stepped portion of the guide panel 142 on which the liquid crystal panel 110 is placed and the upper surface of the optical sheet 138. Light is transmitted to the area between the guide panel 142 and the optical sheet 138 Thereby preventing the image quality from deteriorating by blocking leakage. The light shielding tape 147 may be a double-sided tape to fix the liquid crystal panel 110 to the step of the guide panel 142 and the optical sheet 138.

As the LED 134, R, G, B LEDs emitting white light of R (Red), G (Green) and B (Blue), or LED devices emitting white light may be used.

When monochromatic LEDs emitting monochromatic light are arranged, monochromatic LEDs of R, G, and B are alternately arranged at regular intervals to mix monochromatic light emitted from the LEDs into white light and then to the liquid crystal panel 110, A plurality of LED elements are arranged at regular intervals to supply white light to the liquid crystal panel 110. [

The white light LED device comprises a blue LED that emits blue light and a phosphor that emits yellow light by absorbing blue monochromatic light. The blue monochromatic light output from the blue LED and the yellow monochromatic light emitted from the phosphor are mixed to form a liquid crystal And is supplied to the panel 110. Although the LED 134 is disposed on one side of the light guide plate 135 in the drawing, the LED 134 may be disposed on both sides of the light guide plate 135.

The LED 134 is mounted on an LED substrate 132 made of a flexible film. The mounting surface where the LED 134 is mounted is directed downward and the mounting surface is fixed on a part of the light guide plate 135 and the guide panel 142. The LED 134 is mounted on the light guide plate 135, Light is incident on the light incidence surface of the light guide plate 135 by being positioned in the space between the light guide plate 135 and the guide panel 142.

Although not shown in the drawing, the LED substrate 132 is connected to an external driving circuit portion, and an external signal is supplied to the LED controller for signal and power, and the LED controller drives the LED 134 according to the input signal . At this time, a flexible circuit board (not shown) is attached to the LED substrate 132 of the flexible film, and the flexible circuit board is connected to an external driving circuit. Signal lines are formed on the upper surface and / or the lower surface of the flexible circuit board, and signals of the driving circuit are input to the LED board 132 through the signal lines of the flexible circuit board.

However, the present invention is not limited to the LED 134 as a light source for supplying light to the liquid crystal panel 110. In the present invention, the LED 134 is illustrated as an example of a light source for convenience of explanation. The light source of the present invention is not limited to the LED 134.

A fluorescent lamp such as CCFL (Cold Cathod Fluorescent Lamp) or EFFL (External Electrode Fluorescent Lamp) may be used as the light source of the present invention. When such a fluorescent lamp is used, the use of the LED substrate 132 becomes unnecessary, and a lamp housing for accommodating the fluorescent lamp is disposed on one side of the light guide plate. Reflective material is applied to the inner surface of the lamp housing to reflect the light emitted from the fluorescent lamp to the side of the light guide plate 150 to improve the light efficiency.

The reflection plate 136 disposed below the light guide plate 135 reflects light directed to the lower portion of the light guide plate 135 incident from the LED 134 to be supplied to the liquid crystal panel 110.

The functional panel 105 is disposed on the upper surface of the liquid crystal panel 110 and the liquid crystal panel 110 is bonded to the upper surface of the liquid crystal panel 110 by an adhesive layer 160 applied to the upper surface of the second polarizer 114, Respectively. The functional panel 105 includes a cover glass for protecting the liquid crystal panel 110, a FPR (Film Patterned Retarder) for 3D for realizing a stereoscopic image, a parallax barrier panel, Various panels such as a touch panel for facilitating the operation can be applied.

The adhesive layer 160 for attaching the functional panel 105 to the liquid crystal panel 110 may be formed of a transparent adhesive resin such as OCR (Optical Clearance Resin). However, any material can be used as long as the adhesive layer 160 can be outputted as it is without changing the optical path or the optical characteristic such as light, refraction, etc., which is transparent and emitted from the liquid crystal panel 110.

The adhesive layer 160 is disposed on all or a part of the liquid crystal panel 110 to attach the functional panel 105 to the liquid crystal panel 110.

At this time, the functional panel 105 is placed on the second step 142b at the upper end of the guide panel 142. [ On the upper surface of the second step 142b of the guide panel 142, a protrusion 143 is formed. The protruding portion 143 is formed along the guide panel 142 to contact the functional panel 105 when the functional panel 105 is attached to the liquid crystal panel 110 so that no further pressure is applied to the functional panel 105 It is not authorized. That is, the protrusion 143 functions as a stopper for stopping the functional panel 105 upon application of pressure.

The height a of the protruding portion 143 is substantially equal to the thickness t of the adhesive layer 160 (a? T) because the height a of the protruding portion 143 is equal to the thickness a of the adhesive layer 160 (t) is determined. The adhesive layer 160 may be formed by applying a predetermined amount of a transparent adhesive resin to the functional panel 105 or the liquid crystal panel 110 and then bonding the functional panel 105 and the liquid crystal panel 110 together, And spread over the panel 110 as a whole. As the pressure is applied, the liquid adhesive resin spreads out, and at the same time, the interval between the functional panel 105 and the liquid crystal panel 110 decreases. The pressure applied to the functional panel 105 and the liquid crystal panel 110 is applied until the functional panel 105 comes into contact with the protruding portion 143 disposed at the second step 142b of the guide panel 142, The adhesive resin spreads to the entire area of the upper surface of the liquid crystal panel 110 until the functional panel 105 comes into contact with the protrusion 143.

Even if the pressure is continuously applied between the functional panel 105 and the liquid crystal panel 110, the gap between the functional panel 105 and the liquid crystal panel 110, when the functional panel 105 contacts the protruding portion 143, Is maintained constant in the same state as the height of the protrusion 143. [ Therefore, the pressure applied to the adhesive resin between the functional panel 105 and the liquid crystal panel 110 is removed so that the adhesive resin is no longer spread on the surface of the liquid crystal panel 110, 143, respectively.

The adhesive layer 160 is formed to have a thickness sufficient to secure a sufficient adhesive force between the functional panel 105 and the liquid crystal panel 110. The adhesive force of the functional panel 105 and the liquid crystal panel 110 is controlled by the adhesive layer 160 The height a of the protruding portion 143 is also determined by the area of the region to which the adhesive layer 160 is applied and the type of the adhesive resin or the like because it depends on the area of the area to be coated and the type of the adhesive resin.

The protrusion 143 may be formed separately from the guide panel 142, but may be integrally formed. That is, the protrusion 143 is also formed during the molding process for forming the guide panel 142, so that it is preferable from the viewpoints of cost and manufacturing efficiency to remove a separate process for forming the protrusion 143.

3A to 3C are plan views showing the shape of the protruding portion 143 disposed on the guide panel 142. Fig. The guide panel 142 is formed with two stepped steps, but only the upper surface of the second step 143b of the guide panel 142 is shown in order to mainly show the shape of the protruding part 143 in the figure.

As shown in FIG. 3A, the guide panel 142 is arranged in a rectangular band shape along the periphery of the display element with a set width. Since the liquid crystal panel 110 and the functional panel 142 are disposed on the guide panel 142, the square band shape and the summed area of the rectangular band shape are larger than the areas of the liquid crystal panel 110 and the functional panel 142 . In order to stably support the liquid crystal panel 110 and the functional panel 142, it is preferable that the width of the guide panel 142 is larger. However, in order to minimize the bezel of the manufactured display device, . In other words, it is preferable that the width of the guide panel 142 of the present invention is formed to have a minimum width capable of stably supporting the liquid crystal panel 110 and the functional panel 142.

The protrusions 143 are continuously formed along the guide panel 142 with a constant width. The height of the protrusion 143 is determined according to the thickness of the adhesive layer 160 which bonds the liquid crystal panel 110 and the functional panel 105. The thickness of the adhesive layer 160 is determined by the thickness of the liquid crystal panel 110, The height of the protrusion 143 will be determined by the area of the liquid crystal panel 110, the kind of the adhesive resin, and the adhesive performance of the adhesive resin.

3B, the protrusion 143 is disposed along the guide panel 142, while the guide panel 142 is continuously formed. On the other hand, the protrusion 143 is formed only on the four sides of the guide panel 142 And is formed discontinuously throughout the guide panel 142. The function of the protrusion 143 is to stop the functional panel 110 when the liquid crystal panel 110 and the functional panel 105 are attached to each other. . It is also possible that the protruding portion 143 is disposed on one side or two sides or three sides of the guide panel 142 instead of four sides as long as the protrusion 143 can stop the pressure by the functional panel 110 .

In the structure shown in FIG. 3C, the protruding portions 143 are disposed only in the corner areas of the guide panel 142. At this time, the protrusions 143 may be formed in a straight line shape having a predetermined length on one side of the corner region, although the protrusions 143 are arranged in a shape like a shape of an edge region. Further, the protrusion 143 may be formed in four corner areas of the guide panel 142, or may be formed in one corner area or two or three corner areas.

Although protrusions 143 are illustrated in Figs. 3A-3C, the present invention is not limited to such shapes. Since the projection 143 is used as a control member for adjusting the thickness of the adhesive layer for bonding the display panel 110 and the functional panel 105, any shape can be used as long as it can perform this function. Although the protrusion 143 has a square or rectangular cross section, the protrusion 143 may have various shapes such as a circular shape in cross section.

Hereinafter, a method of manufacturing a display device according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a flow chart showing a manufacturing process of a display device according to the present invention. As shown in FIG. 4, first, the guide panel 142 having the protrusion 143 is formed (S101). The guide panel 142 may be formed of a resin such as polycarbonate or a metal by a mold method. At this time, the protrusion 143 is formed simultaneously with the guide panel 142.

Of course, the protrusion 143 may be formed separately from the guide panel 142. That is, after the guide panel 142 is formed by the molding method, protrusions 143 of the same material or different material as the guide panel 142 are attached to the upper surface of the second step 142b of the guide panel 142 . However, it is preferable to integrally form the guide panel 142 from the standpoint of reducing the manufacturing cost and shortening the manufacturing process.

Subsequently, the liquid crystal display device is assembled using the guide panel 142 (S102). That is, the guide panel 142 is disposed in the lower cover 140, and the reflection plate 136, the light guide plate 135, and the optical sheet 138 are arranged in this order inside the guide panel 142 on the upper portion of the lower cover 140 . Next, the liquid crystal panel 110 is disposed on the first step 142a of the guide panel 142. [

The liquid crystal panel 110 includes a thin film transistor and various electrodes formed on a first substrate 101 through a photo process, a color filter layer and a black matrix are formed on a second substrate 102, ) And the second substrate 102, and attaching the first substrate 10 and the second substrate 102 together by a sealant.

Thereafter, a predetermined amount of transparent adhesive resin such as OCR is applied to the central area of the surface of the functional panel 105 (S103). The application of the adhesive resin may be carried out by various methods such as dropping by a syringe. The adhesive resin may be applied not to the surface of the functional panel 105 but to the surface of the liquid crystal panel 110. The adhesive resin is applied to the central area of the functional panel 105 such that the adhesive resin spreads uniformly over the entire area of the functional panel 105 and the liquid crystal panel 110 when the liquid crystal panel 110 and the functional panel 110 are attached together . For example, when the adhesive resin 160a is applied to an area other than the central area of the functional panel 105, when pressure is applied to the functional panel 105 and the liquid crystal panel 110 to spread the adhesive resin The adhesive resin reaches the interface of the liquid crystal panel 110 on one side while the adhesive resin on the other side does not reach the interface of the liquid crystal panel 110. Therefore, The adhesive resin is not applied to the entire region of the substrate 110. Accordingly, the adhesive resin is applied to the central region so that the adhesive resin spreads in all directions when the pressure is applied, so that the adhesive resin is applied over the entire area of the functional panel 105 and the liquid crystal panel 110.

The adhesive resin can be applied not only to the central region of the surface of the functional panel 105 but also to a plurality of regions around the central region. As the adhesive resin is applied to the plurality of areas, the adhesive resin applied when the functional panel 105 and the liquid crystal panel 110 are attached together quickly spreads to the entire area of the functional panel 105 and the liquid crystal panel 110 The functional panel 105 and the liquid crystal panel 110 can be quickly joined together.

After aligning the functional panel 105 and the liquid crystal panel 110 (S104) after the application of the adhesive resin, the functional panel 105 and the liquid crystal panel 110 are attached to each other and pressure is applied, To the entire area between the panel 105 and the liquid crystal panel 110 (S105).

Figs. 5A to 5D are diagrams showing the spread of the applied adhesive resin applied by applying pressure to the functional panel 105 and the liquid crystal panel 110, and the actual spreading of the adhesive resin will be described with reference to these drawings. Fig.

First, as shown in Fig. 5A, the liquid crystal panel 110 is aligned and positioned on the functional panel 105 to which the transparent adhesive resin 160a is applied. At this time, the adhesive resin 160a may be applied to the liquid crystal panel 110, and the functional panel 105 may be aligned and positioned on the liquid crystal panel 110. [

5B, when the pressure is applied to the left region of the functional panel 105, pressure is applied to the left region of the functional panel 105 and the liquid crystal panel 110 to apply the applied adhesive resin 106a ) Spread out to the left area. At this time, pressure is applied until the functional panel 105 contacts the protrusion 143 formed on the guide panel 142. By the application of the pressure, the adhesive resin spreads to the left edge end region of the liquid crystal panel 110 I'm going.

Since the area of the functional panel 105 is generally larger than the area of the liquid crystal panel 110 when the functional panel 105 is assembled to the liquid crystal display device, 142). Therefore, since the area actually bonded when the functional panel 105 and the liquid crystal panel 110 are bonded together is the surface of the liquid crystal panel 110, the adhesive resin spreads only to the edge area of the liquid crystal panel 110.

5C, when pressure is applied to the right region of the functional panel 105, pressure is applied to the right side of the functional panel 105 and the liquid crystal panel 110 to apply the applied adhesive resin 106a, To the right region. At this time, pressure is applied until the functional panel 105 contacts the protrusion 143 formed on the guide panel 142. By the application of the pressure, the adhesive resin spreads to the right edge region of the liquid crystal panel 110 5D, an adhesive layer 160 is formed between the functional panel 105 and the liquid crystal panel 110 so that the functional panel 105 and the liquid crystal panel 110 are attached to each other.

4, the display element is completed by irradiating light or applying heat to the adhesive layer 160 formed between the functional panel 105 and the liquid crystal panel 110 to cure the adhesive layer 160 (S 106) .

As described above, in the present invention, when pressure is applied to the functional panel and the display panel to adhere the display panel and the functional panel, pressure is applied at a pressure higher than the set pressure, so that the adhesive layer is formed too thin, Protrusions are formed on the guide panel so as to prevent the functional panel from contacting the protrusions when the pressure set on the functional panel is applied.

On the other hand, in the above-described present invention, a display element having a specific structure is described. For example, the display panel discloses a flat panel display panel having a specific structure, and the functional panel also describes a specific panel as an example. However, the present invention is not limited to this specific structure. For example, the display panel can be applied to all types of flat panel display panels currently used, such as a liquid crystal panel, an organic light emitting display panel, and an electrophoretic display panel, and the functional panel can be applied to cover class, FPR film for 3D, Panel, touch panel, and viewing angle control panel.

In other words, the gist of the present invention is to form a protrusion serving as a stopper capable of stopping the attachment of the functional panel to the guide panel so that the adhesive layer always maintains the set adhesive force by applying appropriate pressure, Any structure can be applied to the present invention as long as the structure in which the protrusions are formed can be satisfied. Accordingly, the scope of the rights of the present invention should not be determined by the foregoing detailed description, but should be determined by the appended claims.

101, 102: substrate 105: functional panel
110: display panel 142: guide panel
143: protrusion 160: adhesive layer

Claims (8)

A display panel including a display area and a pad area;
A functional panel attached to the display panel by an adhesive resin;
An adhesive layer for adhering the display panel and the functional panel;
A guide panel for supporting the functional panel; And
And an adhesive layer thickness adjusting member disposed on the guide panel and contacting the functional panel when the display panel and the functional panel are attached to each other to maintain the adhesive layer at a predetermined thickness. The display device according to claim 1, wherein the functional panel comprises a cover class, an FPR for 3D, a parallax barrier panel, and a touch panel. The display device according to claim 1, wherein the adhesive layer thickness adjusting member is a protrusion disposed on the guide panel. The display device according to claim 3, wherein the protrusions are arranged continuously or discontinuously along the guide panel. The display device according to claim 3, wherein the protrusion is formed integrally with the guide panel. The display device according to claim 1, wherein the adhesive layer is made of a transparent adhesive resin. Providing a guide panel having a projection;
Assembling a display panel by a guide panel;
Providing a functional panel;
Applying an adhesive resin to the functional panel; And
After the display panel and the functional panel are bonded, pressure is applied until the functional panel makes contact with the protrusion to form an adhesive layer. The display device according to claim 7, further comprising a step of curing the adhesive layer.

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