KR20080070277A - Back light assembly and display apparatus having the same - Google Patents

Abstract

A backlight assembly and a display device having the same are provided to remove the step difference between a light-guiding plate and an LED(Light Emitting Diodes) by improving the shape of the light-guiding plate, thereby improving the light leakage and enhancing the brightness. A light source unit includes a flexible PCB(Printed Circuit Board)(200), and point light sources(100) disposed on a rear surface of the flexible PCB to generate light. A light-guiding plate(300) is disposed at one side of the point light sources to guide the light from the point light sources. The light-guiding plate includes a body part, and a substrate guide light-guiding part(310) extended from the body part. The substrate guide light-guiding part covers and fixes the flexible PCB.

Description

BACK LIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME}

1 is an exploded perspective view illustrating a display device according to an exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

3 is a cross-sectional view illustrating another embodiment of FIG. 2.

4 is a cross-sectional view illustrating a display device according to another exemplary embodiment of the present invention.

5 is a cross-sectional view illustrating another embodiment of FIG. 4.

<Description of the symbols for the main parts of the drawings>

100: point light source 200: flexible circuit board for the light source

300: light guide plate 310: substrate guide light guide portion

311: adhesive tape 312: substrate guide light guide groove

400: mold frame 420: substrate guide mold portion

422 substrate guide mold groove 421 adhesive tape

700: backlight assembly 800: display panel assembly

810: first substrate 811: lower polarizing film

1000: display device

The present invention relates to a backlight assembly and a display device having the same, and more particularly, to a backlight assembly for improving brightness and a display device having the same.

In general, the liquid crystal display is a flat panel display that displays an image by using the light transmittance of the liquid crystal, and is thinner and lighter than other display devices, and has a low driving voltage and low power consumption. Is being used.

The LCD includes a display panel displaying an image and a backlight assembly disposed under the display panel to supply light to the display panel.

The backlight assembly of the small and medium-sized liquid crystal display device includes a light emitting diode that emits light, a flexible circuit board for light source for supplying power to the light emitting diode, and one side of the light emitting diode and guides the light from the light emitting diode to the front of the display panel. And a light guide plate for exiting. At this time, in order to fix the light emitting diode to one side of the light guide plate, the flexible circuit board for the light source is bonded to one side of the light guide plate using double-sided tape.

However, due to the poor adhesiveness and light scattering effect of the double-sided tape sensitively changed to temperature and humidity, the light leakage defect between the light emitting diode and the light guide plate occurs in the backlight assembly. Further, as the liquid crystal display device becomes thinner, a step in the vertical direction due to the double-sided tape occurs between the light emitting surface of the light emitting diode and the light receiving surface of the light guide plate. As a result, light leaks due to the above-described steps, thereby causing a problem that the luminance of the display device is reduced.

Therefore, the technical problem of the present invention is to solve such a conventional problem, an object of the present invention is to provide a backlight assembly that can improve the brightness by removing the step between the light emitting diode and the light guide plate to improve the light leakage defect.

Another object of the present invention is to provide a display device having the above-described backlight assembly.

In order to realize the above object of the present invention, a backlight assembly includes a light source unit having a light source unit disposed on a lower surface of a flexible circuit board for a light source and a flexible circuit board for light source and generating light, and the point light source. And a light guide plate disposed at one side of the light guide plate to guide the light from the point light source and extending from the body portion to cover and fix the flexible circuit board for the light source.

According to another aspect of the present invention, there is provided a backlight assembly comprising: a light source unit having a light source unit disposed on a bottom surface of a flexible circuit board for a light source and a flexible circuit board for generating light and generating light; A light guide plate disposed at one side of the light guide plate to guide the light from the point light source, a side wall part surrounding the outside of the light source unit and the light guide plate, and a substrate guide extending from the side wall part to cover and fix the flexible circuit board for the light source And a mold frame having a mold portion.

In accordance with another aspect of the present invention, a display device includes a display panel assembly for displaying an image and a backlight assembly disposed under the display panel assembly to supply light to the display panel assembly. . The backlight assembly includes a light source unit having a light source unit disposed on a lower surface of the flexible circuit board for the light source and the light source and generating light, and disposed on one side of the point light source to guide light from the point light source. And a light guide plate having a body portion and a substrate guide light guide portion extending from the body portion to cover and fix the flexible circuit board for the light source.

In accordance with another aspect of the present invention, a display device includes a display panel assembly configured to display an image and a backlight assembly disposed under the display panel assembly to supply light to the display panel assembly. do. The backlight assembly may include a light source unit having a light source unit disposed on a lower surface of the flexible circuit board for a light source and the light source flexible circuit board for generating light, and a light guide plate disposed on one side of the point light source to guide light from the point light source. And a mold frame having a sidewall portion surrounding the outside of the light source unit and the light guide plate, and a substrate guide mold portion extending from the sidewall portion to cover and fix the flexible circuit board for the light source.

According to the backlight assembly and the display device having the same, the shape of the light guide plate or the mold frame is changed to eliminate the step difference in the vertical direction between the point light source and the light guide plate, thereby improving the light leakage defect of the display device and improving the overall luminance. Can be improved.

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

1 is an exploded perspective view illustrating a display device according to an exemplary embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II ′ of FIG. 1.

1 and 2, the display device 1000 according to an exemplary embodiment may include a backlight assembly 700 that generates light and a display panel that displays an image using light from the backlight assembly 700. Assembly 800.

The backlight assembly 700 is disposed below the display panel assembly 800 and includes a light source unit, a light guide plate 300, optical sheets, a mold frame 400, and a storage container 600. As in the present embodiment, the light source unit may include a flexible circuit board 200 and a point light source 100 for the light source.

The flexible circuit board 200 for the light source supplies driving power to at least one point light source 100 disposed on one surface thereof. As in the present embodiment, the flexible circuit board 200 for the light source may be disposed above the point light source 100. For example, the flexible circuit board 200 for the light source may be made of a resin material having flexibility with metal wiring. The flexible circuit board 200 for the light source may be disposed below one end of the first substrate 810 so as to correspond to one end of the display panel assembly 800 connected to the main flexible circuit board 840.

The point light source 100 generates light and is disposed on one surface of the flexible circuit board 200 for the light source. As in this embodiment, the point light source 100 may be mounted on the lower surface of the flexible circuit board 200 for the light source. For example, the point light source 100 may be a light emitting diode (LED) that generates white light. The number of point light sources 100 may vary depending on the size of the display panel assembly 800 and the luminance required.

The light guide plate 300 is disposed at one side of the point light source 100 so as to face the light output part of the point light source 100. The light guide plate 300 guides the light generated from the point light source 100 and emits the light toward the display panel assembly 800. For example, the light guide plate 300 may be made of a transparent material to minimize the loss of light.

As in an embodiment of the present invention, the light guide plate 300 may include a plate-shaped body portion and a substrate guide light guide portion 310 extending from the body portion. A detailed description of the substrate guide light guide portion 310 will be described later.

Specifically, referring to FIG. 2, the body portion of the light guide plate 300 faces the light output portion of the point light source 100 and receives the light incident portion 301 and the light incident portion 301 which receive light from the point light source 100. ) Is extended from the lower side, the reflector 302 for reflecting the light incident therein upwards, and extending from the upper side of the light incident part 301 to face the reflector 302, and emits light to the outside Miner 303 may be included. The light guide plate 300 may have, for example, a plate shape having the same thickness at both ends and a wedge shape in which the thickness decreases from one end to the other end.

The optical sheets may improve luminance characteristics of light emitted from the light guide plate 300, and may include, for example, a reflective sheet 510, a diffusion sheet 520, and a prism sheet 530.

In detail, the reflective sheet 510 is disposed under the light guide plate 300, and reflects light leaking to the lower side of the light guide plate 300 into the light guide plate 300 to improve light utilization efficiency. The diffusion sheet 520 is disposed above the light guide plate 300 and diffuses light emitted from the light guide plate 300. The prism sheet 530 is disposed above the diffusion sheet 520 and condenses the light emitted from the diffusion sheet 520 to the front. For example, the prism sheet 530 may include vertical and horizontal prism sheets for condensing light in the vertical and horizontal directions, respectively.

The mold frame 400 surrounds the side of the light source unit and fixes the display panel assembly 800 on the light source unit. That is, the mold frame 400 serves to guide and support the display panel assembly 800. For example, the mold frame 400 may have a rectangular frame shape.

The storage container 600 may include a bottom portion 610 of a rectangular plate shape and a side portion 620 extending from an edge of the bottom portion 610. The bottom part 610 and the side part 620 form a receiving space, in which the flexible light circuit board 200, the light guide plate 300, the optical sheets and the mold frame for the light source in which the point light source 100 is disposed. 400 is disposed. The storage container 600 may be made of, for example, a metal having high strength and low deformation. In one example, the side portion 620 of the storage container 600 may be hooked with the mold frame 400.

The display panel assembly 800 includes a display panel, a lower polarizing film 811 disposed below the display panel, and an upper polarizing film 821 disposed above the display panel, and from the backlight assembly 700. Display the image using light. In detail, the display panel includes a first substrate 810, a second substrate 820 facing the first substrate 810, and a liquid crystal interposed between the first substrate 810 and the second substrate 820. Layer (not shown).

The first substrate 810 is a substrate in which a thin film transistor (TFT), which is a switching element, is formed in a matrix form. A data line and a gate line are respectively connected to the source terminal and the gate terminal of the TFTs, and a pixel electrode made of a transparent conductive material is connected to the drain terminal.

The second substrate 820 is disposed to face the first substrate 810, and is a substrate in which RGB pixels for realizing color are formed in a thin film form. A common electrode made of a transparent conductive material is formed on the second substrate 820 to face the pixel electrode formed on the first substrate 810.

When power is applied to the gate terminal of the TFT in the display panel and the TFT is turned on, an electric field is formed between the pixel electrode and the common electrode. The liquid crystal array of the liquid crystal layer disposed between the first substrate 810 and the second substrate 820 is changed by the electric field, and the light transmittance is changed according to the arrangement change of the liquid crystal to display an image of a desired gray scale. Can be.

The lower polarizing film 811 is disposed on the bottom surface of the first substrate 810. The lower polarizing film 811 includes a light transmission axis in a first direction to polarize light in the first direction. The upper polarizing film 821 is disposed on an upper surface of the second substrate 820. The upper polarizing film 821 includes the light transmission axis in the second direction, and polarizes the light in the second direction. For example, the light transmission axis of the lower polarizing film 811 and the light transmission axis of the upper polarizing film 821 may be disposed perpendicular to each other.

In addition, the display panel assembly 800 may further include a driving chip 830 and a main flexible circuit board 840 for driving the first substrate 810.

The driving chip 830 generates a driving signal for driving the first substrate 810 in response to various control signals applied from the outside. For example, the driving chip 830 may be mounted on one end of the first substrate 810 and electrically connected to the first substrate 810.

The main flexible circuit board 840 is electrically connected to one end of the first substrate 810 to supply various control signals for driving the driving chip 830. For example, the main flexible circuit board 840 may be bent from one end of the first substrate 810 to the lower side of the display panel assembly 800.

In addition, the display device 1000 may further include a panel adhesive tape 900 for connecting the display panel assembly 800 and the backlight assembly 700. For example, the panel adhesive tape 900 may be disposed on the upper side of the mold frame 400 to overlap the edges of the optical sheets. As such, the panel adhesive tape 900 may be attached to the upper surface of the mold frame 400 to directly adhere the display panel assembly 800 to the mold frame 400.

The light guide plate 300 may include a substrate guide light guide portion 310 protruding from the body portion so as to cover the flexible circuit board 200 for the light source.

As in one embodiment of the present invention, the substrate guide light guide portion 310 may extend from one end of the light guide plate 300 adjacent to the point light source 100 to the upper side of the flexible circuit board 200 for the light source. For example, the substrate guide light guide part 310 may extend from an upper side of the light incident part 301 to an upper side of the flexible circuit board 200 for the light source. The substrate guide light guide part 310 may have, for example, an L-shape.

In the present exemplary embodiment, in order to fix the flexible circuit board 200 for the light source, the substrate guide light guide groove 312 into which the flexible circuit board 200 for the light source is inserted may be formed in the substrate guide light guide 310. For example, the substrate guide light guide groove 312 may be formed under the substrate guide light guide portion 310 facing the flexible circuit board 200 for the light source. The substrate guide light guide groove 312 may have, for example, a U-shape.

As such, as the flexible circuit board 200 for the light source is inserted into the substrate guide light guide groove 312, the point light source 100 mounted on the flexible circuit board 200 for the light source may be disposed on one side of the light guide plate 300. Can be. Accordingly, when the light guide plate 300 and the flexible circuit board 200 for the light source are fixed, a step in the vertical direction is generated between the light incident part 301 of the light guide plate 300 and the light exit part of the point light source 100. You can prevent it.

In addition, as in the present embodiment, the above-described step does not occur between the light output part and the light incident part 301 of the point light source 100, and the light exit part and the light incident part 301 of the point light source 100 are You can face each other exactly. Accordingly, all of the light emitted from the point light source 100 is incident on the light incident part 301, so that the luminance of the display device 1000 may be further improved.

Meanwhile, the display panel according to the present exemplary embodiment may be divided into a central area CA and an outer area EA surrounding the central area CA. For example, the lower and upper polarizing films 811 and 821 may be disposed on the lower side and the upper side of the display panel, respectively, corresponding to the center area CA. Thus, a step may be generated below the display panel assembly 800 by the thickness of the lower polarizing film 811 between the outer area EA and the center area CA.

Accordingly, as in the exemplary embodiment of the present invention, the substrate guide light guide part 310 may protrude from the light guide plate 300 to extend toward the outer area EA, thereby filling the stepped space as described above.

For example, the substrate guide light guide part 310 is formed below the outer area EA to which the main flexible circuit board 840 is attached. The upper surface of the substrate guide light guide part 310 may be formed to be in line with the lower surface of the lower polarizing film 811. In this case, the panel adhesive tape 900 according to the present exemplary embodiment may be disposed on the substrate guide light guide part 310, and may be adhered to the edges of the outer area EA and the lower polarizing film 811 of the display panel assembly 800. . Accordingly, a step between the outer area EA of the display panel assembly 800 and the backlight assembly 700 by the lower polarizing film 811 may be compensated for.

3 is a cross-sectional view illustrating another embodiment of FIG. 2.

Referring to FIG. 3, as in one embodiment of the present invention, the light guide plate 300 may include a substrate guide light guide part 310 covering a flexible circuit board 200 for a light source. For example, the substrate guide light guide part 310 may protrude upward from the light incident part 301 so as to cover the flexible circuit board 200 for the light source, and may extend above the flexible circuit board 200 for the light source. . The substrate guide light guide part 310 may have, for example, an L-shape.

In the present embodiment, in order to fix the flexible circuit board 200 for the light source to the substrate guide light guide part 310, the backlight assembly 700 is disposed between the flexible circuit board 200 for the light source and the substrate guide light guide part 310. It may further include an adhesive tape 311 disposed in. The adhesive tape 311 may be disposed on the flexible circuit board 200 for the light source to be bonded to the bottom surface of the substrate guide light guide portion 310. The adhesive tape 311 may be made of, for example, a double-sided tape material.

As such, as the flexible circuit board 200 for the light source is adhered to the substrate guide light guide part 310, the point light source 100 mounted on the flexible circuit board 200 for the light source is fixed to one side of the light guide plate 300. Can be. Accordingly, when the light guide plate 300 and the flexible circuit board 200 for the light source are fixed, the step difference in the vertical direction is prevented between the light incident part 301 of the light guide plate 300 and the light output part of the point light source 100. In addition, it is possible to improve light leakage defects in the stepped portions.

4 is a cross-sectional view illustrating a display device according to another exemplary embodiment of the present invention. 5 is a cross-sectional view illustrating another embodiment of FIG. 4. Except for the shape of the mold frame and the light guide plate, the display device according to the present exemplary embodiment has the same configuration as the display device of the above-described embodiment, and thus, redundant descriptions thereof will be omitted, and like reference numerals refer to like elements. Let's use the name.

Referring to FIG. 4, the display device 1000 according to another exemplary embodiment of the present invention is disposed above the backlight assembly 700 and the backlight assembly 700 to supply light, thereby providing light from the backlight assembly 700. It includes a display panel assembly 800 for displaying an image using.

In detail, the backlight assembly 700 includes a light source unit, a light guide plate 300, a mold frame 400, and an adhesive tape 421.

For example, the light source unit includes a point light source 100 disposed on a lower surface of the flexible circuit board 200 for a light source and the flexible circuit board 200 for a light source to generate light. The light guide plate 300 is disposed on one side of the point light source 100 to guide the light from the point light source 100 to the display panel assembly 800. The optical sheets may be disposed on upper and lower sides of the light guide plate 300 to improve luminance characteristics of light emitted from the light guide plate 300.

The mold frame 400 surrounds the outside of the light source unit and the light guide plate 300 and fixes the display panel assembly 800 on the light source unit and the light guide plate 300. That is, the mold frame 400 serves to guide and support the display panel assembly 800. For example, the mold frame 400 may have a rectangular frame shape.

As in an exemplary embodiment of the present invention, the mold frame 400 may include a sidewall portion 410 surrounding the outside of the light source unit and the light guide plate 300 and a substrate guide mold portion 420 extending from the sidewall portion 410. It may include.

In detail, the substrate guide mold part 420 may extend vertically from an upper end of the sidewall part 410 in the upper direction of the flexible circuit board 200 for the light source. Accordingly, the substrate guide mold part 420 may cover the flexible circuit board 200 for the light source disposed above the point light source 100. For example, the mold frame 400 including the sidewall part 410 and the substrate guide mold part 420 may have an A-shape in cross section.

The adhesive tape 421 may be disposed between the flexible circuit board 200 for the light source and the substrate guide mold part 420 to adhere the flexible circuit board 200 for the light source to the lower surface of the substrate guide mold part 420. . In one example, the adhesive tape 421 may be made of a double-sided tape material. As such, as the flexible circuit board 200 for the light source is attached to the substrate guide mold part 420, the point light source 100 mounted on the flexible circuit board 200 for the light source is fixed to one side of the light guide plate 300. Can be. As a result, the flexible circuit board 200 for the light source may receive the light incident portion 301 of the light guide plate 300 without generating a step in the vertical direction between the light output portion of the point light source 100 and the light incident portion 301 of the light guide plate 300. ) It can be fixed on the upper side.

Referring to FIG. 5, as in another embodiment of the present invention, in order to fix the flexible circuit board 200 for the light source to the substrate guide mold part 420 of the mold frame 400, the flexible circuit board for the light source ( The substrate guide mold groove 422 into which the 200 is inserted may be formed. For example, the substrate guide mold groove 422 may be formed under the substrate guide mold part 420 facing the flexible circuit board 200 for the light source. The substrate guide mold groove 422 may have, for example, a U-shape.

As such, as the flexible circuit board 200 for the light source is inserted into the substrate guide mold groove 422, the point light source 100 mounted on the flexible circuit board 200 for the light source may be disposed on one side of the light guide plate 300. Can be. Accordingly, when the light guide plate 300 and the flexible circuit board 200 for the light source are fixed, the light source unit 301 of the light guide plate 300 and the light output part of the point light source 100 do not generate a step in the vertical direction. One end of the flexible printed circuit board 200 may be fixed to the light incident part 301 of the light guide plate 300.

4 and 5, as the substrate guide mold groove 422 is formed in the substrate guide mold 420 to fix the flexible circuit board 200 for the light source, the adhesive tape 421 may be additionally added. You do not need to use it. Accordingly, by reducing the components of the display device 1000, the overall manufacturing cost of the display device 1000 can be reduced.

As the substrate guide mold part 420 extends inward from the sidewall part 410 in correspondence with the outer area EA, the substrate guide mold part 420 may fill the step space below the display panel assembly 800.

For example, the substrate guide mold part 420 may be formed under the outer area EA to which the main flexible circuit board 840 is attached. The upper surface of the substrate guide mold part 420 may be formed to be in line with the lower surface of the lower polarizing film 811. In this case, the panel adhesive tape 900 of the present exemplary embodiment may be disposed on the substrate guide mold part 420, and may be adhered to the edges of the outer area EA and the lower polarizing film 811 of the display panel assembly 800. . Accordingly, a step between the outer area EA of the display panel assembly 800 and the backlight assembly 700 by the lower polarizing film 811 may be compensated for.

As described above, the shape of the light guide plate and the mold frame may be changed to physically fix the flexible circuit board for the light source in which the point light source is mounted on one side of the light guide plate. Accordingly, it is possible to prevent the step difference between the light emitting surface of the point light source and the light incident surface of the light guide plate and to improve the light leakage defect, thereby improving the brightness of the display device.

Meanwhile, by removing the double-sided tape used to connect the conventional flexible circuit board for the light source and the light guide plate, it is possible to prevent the step difference between the point light source and the light guide plate due to the double-sided tape, and to reduce the manufacturing cost.

In addition, by changing the shape of the light guide plate and the mold frame to compensate for the step between the display panel and the backlight assembly by the lower polarizing film, a separate step compensating spacer is unnecessary, thereby reducing the manufacturing cost of the display device and assembling. The effect of improving the performance and rework rate can be obtained.

Although described above with reference to the embodiments, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below. I can understand.

Claims (18)

A light source unit having a point light source disposed on a lower surface of the flexible circuit board for the light source and the flexible circuit board for the light source to generate light; And And a light guide plate disposed on one side of the point light source to guide light from the point light source, the light guide plate having a body portion and a substrate guide light guide portion extending from the body portion to cover and fix the flexible circuit board for the light source. The backlight assembly of claim 1, wherein the substrate guide light guide portion extends from one end of the body portion adjacent to the point light source to an upper side of the flexible circuit board for the light source. The backlight assembly of claim 2, wherein the substrate guide light guide portion has a L-shape in cross section. The backlight assembly of claim 2, wherein the substrate guide light guide part comprises a substrate guide light guide groove into which one end of the flexible circuit board for the light source is inserted. The backlight assembly of claim 2, further comprising an adhesive tape disposed on the flexible circuit board for the light source and bonded to the substrate guide light guide part. A light source unit having a point light source disposed on a lower surface of the flexible circuit board for the light source and the flexible circuit board for the light source to generate light; A light guide plate disposed at one side of the point light source to guide light from the point light source; And And a mold frame having a sidewall portion surrounding the outside of the light source unit and the light guide plate, and a substrate guide mold portion extending from the sidewall portion to cover and fix the flexible circuit board for the light source. The backlight assembly of claim 6, wherein the substrate guide mold part extends from an upper end of the side wall part to an upper side of the flexible circuit board for the light source. 8. The backlight assembly of claim 7, wherein the mold frame has a L-shape in cross section. The backlight assembly of claim 7, wherein the substrate guide mold part comprises a substrate guide mold groove into which one end of the flexible circuit board for the light source is inserted. The backlight assembly of claim 7, further comprising an adhesive tape disposed on the flexible circuit board for the light source and adhered to the substrate guide mold part. A display panel assembly displaying an image; And A backlight assembly disposed under the display panel assembly to supply light to the display panel assembly; The backlight assembly A light source unit having a point light source disposed on a lower surface of the flexible circuit board for the light source and the flexible circuit board for the light source to generate light; And And a light guide plate disposed on one side of the point light source to guide the light from the point light source, the light guide plate having a body portion and a substrate guide light guide portion extending from the body portion to cover and fix the flexible circuit board for the light source. Display. The display panel of claim 11, wherein the display panel assembly A display panel divided into a center area and an outer area surrounding the center area; A lower polarizing film disposed under the display panel corresponding to the central area; And An upper polarizing film disposed on an upper side of the display panel corresponding to the central area; And the substrate guide light guide part is formed under the outer area. The display device of claim 12, wherein an upper surface of the substrate guide light guide portion forms a straight line with a lower surface of the lower polarizing film. The display device of claim 12, further comprising an adhesive tape disposed on the substrate guide light guide part and adhered to an edge of the lower region of the display panel and the lower polarizing film. A display panel assembly displaying an image; And A backlight assembly disposed under the display panel assembly to supply light to the display panel assembly; The backlight assembly A light source unit having a point light source disposed on a lower surface of the flexible circuit board for the light source and the flexible circuit board for the light source to generate light; A light guide plate disposed at one side of the point light source to guide light from the point light source; And And a mold frame having a sidewall portion surrounding the outside of the light source unit and the light guide plate, and a substrate guide mold portion extending from the sidewall portion to cover and fix the flexible circuit board for the light source. The display panel assembly of claim 15, wherein the display panel assembly A display panel divided into a center area and an outer area surrounding the center area; A lower polarizing film disposed under the display panel corresponding to the central area; And An upper polarizing film disposed on an upper side of the display panel corresponding to the central area; And the substrate guide mold part is formed under the outer area. The display device of claim 16, wherein an upper surface of the substrate guide mold part is aligned with a lower surface of the lower polarizing film. The display device of claim 16, further comprising an adhesive tape disposed on the substrate guide mold part and adhered to an edge of the outer area of the display panel and the lower polarizing film.

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