KR20070087339A - Display device - Google Patents

Abstract

A display device is provided to absorb and damp external impact applied to a display panel by a buffering element and directly protect the display unit by a protecting element. A display device includes a display unit, a backlight assembly for supplying light to the display unit, and a first receiving container(400) for receiving the display unit and the backlight assembly. A second receiving container(300) is coupled with the first receiving container for fixing the display unit. A buffering element includes a cushion layer(510) having adhesiveness, and a film layer(520) supporting the cushion layer, wherein a first surface of the cushion layer is adhered to the display unit and a second surface thereof is adhered to the film layer. A protecting element is formed on the second receiving container for protecting the display unit exposed to the outside, wherein the protecting element is formed of a transparent area(610) corresponding to a display area of the display unit, and a blocking area(620) formed outside the transparent area.

Description

Display {DISPLAY DEVICE}

1 is an exploded perspective view of 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 an enlarged view of a portion A of FIG. 2.

<Explanation of symbols for main parts of the drawings>

100: display unit 110: display panel

200: backlight assembly 300: second storage container

310: opening 320: peripheral

400: first storage container 500: buffer member

510: cushion layer 520: film layer

600: protection member 700: air layer

The present invention relates to a display device, and more particularly, to a display device that can improve productivity and display quality by simplifying a manufacturing process.

In general, the display device includes a display unit including a display panel for displaying an image, a backlight assembly providing light to the display panel, a top chassis, and a bottom chassis.

The display panel includes an array substrate including a thin film transistor (TFT) as a switching element, a color filter substrate facing the array substrate, and a liquid crystal layer interposed between the array substrate and the color filter substrate. Include. In this case, the display panel further includes a polarizing plate formed on one surface of the array substrate and the color filter substrate formed in a direction opposite to the liquid crystal layer direction.

The backlight assembly supplies light to the display panel because the display panel is a non-light emitting device that does not emit light by itself. The backlight assembly includes a light source unit, a reflective sheet, a light guide plate, and an optical sheet.

The bottom chassis is positioned under the display device to sequentially receive the backlight assembly and the display unit. The top chassis formed to face the bottom chassis is formed on an upper portion of the display unit, and is accommodated while fixing the display unit and the backlight assembly to an accommodation space formed by combining the bottom chassis and the top chassis.

In the display device having the above structure, an outer window is formed on the display panel to cover an air layer having a predetermined thickness in order to protect the display panel. However, by arranging an air layer and an outer window covering the air layer on the display panel to protect the display panel, the overall thickness of the display device is increased. In addition, the display device has a problem in that the light transmittance decreases due to the air layer and the external window, thereby lowering the luminance of the emitted light.

Accordingly, the technical problem of the present invention was conceived in this respect, and an object of the present invention is to provide a display device for improving display quality and productivity by simplifying a manufacturing process.

The display device according to the embodiment for realizing the object of the present invention is a display unit for displaying an image, a backlight assembly for providing light to the display unit, a first storage container for receiving the display unit and the backlight assembly, A second storage container coupled to the first storage container to fix the display unit, an adhesive cushion layer, and a film layer supporting the cushion layer, wherein the first surface of the cushion layer is adhered to the display unit. The second surface of the cushion layer includes a buffer member to which the film layer is attached.

According to such a display device, it is possible to minimize the overall thickness of the product and at the same time prevent the generation of bubbles or inflow of foreign matter in the manufacturing process, and to simplify the display quality and productivity.

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

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

1 and 2, the display device 800 includes a display unit 100, a backlight assembly 200, a second storage container 300, and a first storage container 400, and a buffer member 500. And a protection member 600.

The display unit 100 includes a display panel 110 displaying an image and a source flexible circuit board 140 providing a driving signal for driving the display panel 110.

The display panel 110 includes an array substrate 112 including a thin film transistor (not shown), a color filter substrate 114 coupled to the array substrate 112, and an array substrate 112 and a color filter. And a liquid crystal layer (not shown) interposed between the substrates 114.

The display panel 110 is divided into a display area that displays an image and a peripheral area that is formed around the display area and that cannot display an image. A driving chip 130 is formed at one end of the peripheral region of the array substrate 112 to drive the display panel 110.

The source flexible circuit board 140 extends from one end of the peripheral region where the driving chip 130 of the array substrate 112 is located. The source flexible circuit board 140 is connected through an anisotropic conductive film (ACF) and bent in one direction to be disposed on the rear surface of the first storage container 400.

In the display panel 110, when the thin film transistor is turned on, an electric field is formed between the pixel electrode (not shown) of the array substrate 112 and the common electrode (not shown) of the color filter substrate 114. do. The arrangement of the liquid crystal molecules is changed by the electric field, and the transmittance of light supplied from the backlight assembly 200 is changed according to the arrangement change of the liquid crystal molecules, thereby obtaining an image having a desired gray scale.

First and second polarizers 122 and 124 are disposed on upper and lower surfaces of the display panel 110. The polarizers 122 and 124 orientate the liquid crystal molecules by passing only light in one specific direction of the light propagation direction. The first polarizer 122 is positioned on the base substrate on one surface of the array substrate 112, and the second polarizer 124 is positioned on the base substrate on one surface of the color filter substrate 114. The first polarizer 122 and the second polarizer 124 are formed to face each other.

Specifically, since the array substrate 112 and the color filter substrate 114 are formed on opposite surfaces of the surface on which the liquid crystal layer is formed, the first and second polarizers 122 and 124 are formed on one surface of the display panel 110. The first polarizer 122 is formed, and the second polarizer 124 is formed on the other surface formed in the opposite direction of the one surface.

A backlight assembly 200 is provided below the display unit 100 to provide uniform light to the display panel 110. The backlight assembly 200 generates light to supply light to the display unit 100. The backlight assembly 200 is disposed under the display unit 100, and the display panel 110 displays an image using light supplied from the backlight assembly 200. The backlight assembly 200 includes a light source unit 210, a light guide plate 230, a reflective sheet 220, and optical sheets 242, 244, and 246.

The light source unit 210 generates light and is located at one side of the backlight assembly 200. The light source of the light source unit 210 is, for example, a light emitting diode (LED) or a cold cathode fluorescent lamp (CFL).

The light guide plate 230 guides the light generated by the light source unit 210 to the display unit 100. The light guide plate 230 is made of a transparent material, for example, the light guide plate 230 is made of polymethyl methacrylate (PMMA) material in order to minimize the loss of light.

The reflective sheet 220 reflects the light leaking into the lower portion of the light guide plate 230 to the inside of the light guide plate 230 to improve light utilization efficiency. The reflective sheet 220 is made of a material having high light reflectance. The optical sheets 242, 244, and 246 change a path of light emitted from the light guide plate 230 to the display panel 110 to improve luminance characteristics of the emitted light. For example, the optical sheets may include a diffusion sheet 242 for diffusing light and prism sheets 244 and 246 for condensing light.

The display unit 100 and the backlight assembly 200 are stored and fixed in a predetermined space formed by combining the second storage container 300 and the first storage container 400. The second storage container 300 and the first storage container 400 is coupled to the coupling surface 330 is engaged with the outer side of the side 420. The second storage container 300 and the first storage container 400 may be made of various materials having strong strength, preferably made of metal.

The second storage container 300 is positioned above the display unit 100 and includes a top surface having a quadrangular shape and a plurality of coupling surfaces 330. The upper surface is a surface formed in parallel with the display unit 100, the coupling surface 330 is a surface extending from the upper surface and bent in one direction to be perpendicular to the upper surface.

The upper surface may include an opening 310, which is an area where the center of the upper surface is removed, and a peripheral portion 320 defining the opening 310 to correspond to the display area of the display panel 110. The edge of the display unit 100 is fixed by the peripheral part 320, and the display area of the display panel 110 is exposed by the opening 310.

The first accommodating container 400 is positioned below the backlight assembly 200 to face the second accommodating container 300, and includes a bottom surface 410 and a plurality of side surfaces 420 having a rectangular shape. The bottom surface 410 is a surface formed parallel to the backlight assembly 200, and the side surface 420 extends from the bottom surface 410 and is bent in one direction to be perpendicular to the bottom surface 410.

A predetermined space is formed by the bottom surface 410 and the side surface 420, and the backlight assembly 200 and the display unit 100 are sequentially formed in the storage space of the first storage container 400 in the predetermined space. It is accommodated and supported by the first storage container 400.

Although not shown, a mold frame may be further accommodated in the first storage container 400 to fix the light guide plate 230 or the light source unit 210 and support the display panel 110.

The display device 800 absorbs a shock applied from the outside to protect the display unit 100, thereby minimizing the shock and the buffer member 500 to minimize the impact, and directly protects the display unit 100. It includes a protective member 600.

The buffer member 500 is positioned on the display unit 100, and a first surface of the buffer member 500 is formed of a cushion layer 510, and a second surface formed in a direction opposite to the first surface is a cushion layer ( And a film layer 520 supporting the 510. The buffer member 500 is positioned on the top layer of the display unit 100 and attached to the top layer to fix the buffer member 500 to the display unit 100.

For example, when the uppermost layer of the display unit 100 is the color filter substrate 114, the buffer member 500 is positioned on one surface of the color filter substrate 114, and the uppermost layer is the second polarizing plate 124. The buffer member 500 is positioned on one surface of the second polarizing plate 124.

The cushion layer 510 is formed in a predetermined thickness with an adhesive material and is in a gel state, and has double sided adhesiveness. The film layer 520 is attached to one surface of the cushion layer 510 by the double-sided adhesiveness to form the buffer member 500, and the other surface formed in the opposite direction to the one surface may be combined with the external members.

The cushion layer 510 is attached to and coupled to the outer member to prevent the shock absorbing member 500 from being scratched or foreign due to movement inside the display device 800. In the display device 800 according to the exemplary embodiment, the cushion layer 510 is fixed to the second polarizing plate 124 in combination.

The film layer 520 serves to support the cushion layer 510 while minimizing the impact applied to the outside together with the cushion layer 510. Since the cushion layer 510 is difficult to maintain a constant shape, the cushion layer 510 is supported by the film layer 520 in a stable layered form. The film layer 520 is made of a transparent material.

The transparent material may be, for example, poly methyl methacrylate (PMMA), poly carbonate (PC), polyethylene terephthalate (PET), triacetyl cellulose (Tri acetyl). Cellulose (TAC), polyethylene sulfone (Poly Ethylene sulfone).

The protection member 600 is formed on the second storage container 300 to protect the exposed display panel 110. The protection member 600 is wider than the width of the opening 310 and is attached to the peripheral portion 320 of the second storage container 300. In this case, an adhesive member (not shown) is further formed on the peripheral part 320 to attach the protective member 600 to the second storage container 300. The protective member 600 is formed of a transparent material.

The protection member 600 includes a transparent area 610, which is an area corresponding to the display area, and a blocking area 620 formed at an edge of the transparent area 610. The blocking area 620 corresponds to the peripheral part 320, and is a region in which a black matrix is formed to block the peripheral part 320 from being visible from the upper portion of the protection member 600. The width of the blocking area 620 is preferably formed to be wider or the same as the width of the peripheral part 320.

3 is an enlarged view of a portion A of FIG. 2. Referring to FIG. 3, a second polarizer 124 is positioned on the display panel 110, and a buffer member 500 is formed on the second polarizer 124. The buffer member 500 is formed in the opening 310, and the buffer member 500 and the second polarizing plate 124 are bonded to each other by the cushion layer 510.

The cushion layer 510 of the shock absorbing member 500 is formed to a thickness such that the adhesive material is formed to a predetermined thickness and absorbs and alleviates an external impact. Preferably, the cushion layer 510 has a thickness of 50 μm or more. The film layer 520 is formed to a thickness that can maintain the cushion layer 510 in a stable layered structure, and maintain the flatness of the film layer 520 itself. It is preferable to form the thickness of the film layer 520 to 25㎛ or more.

An air layer 700 at a predetermined interval is formed between the protective member 600 and the film layer 520. In the air layer 700, the buffer member 500 is formed in the opening 310, and the protective member 600 is formed on the peripheral portion 320, and thus, between the film layer 520 of the buffer member 500 and the protective member 600. It is defined as the layer formed on. In this case, the thickness z of the air layer 700 depends on the thickness x + y of the buffer member 500 and the thickness w of the periphery of the second storage container 300.

For example, if the thickness (x + y) of the buffer member 500 is 100㎛, the thickness (w) of the peripheral portion 320 of the second storage container 300 is 300㎛, the thickness of the air layer 700 (z) becomes 200 micrometers. When the thickness x + y of the buffer member 500 is the same as the thickness w of the peripheral portion of the second storage container 300, the air layer 700 is not formed.

On the other hand, the reflection of light by overlapping the film layer 520 and the protective member 600 of the buffer member 500 is subjected to an anti-glare (Anti-Glare) coating the surface of the film layer 520 prevent.

As described above in detail, the display device 800 includes a buffer member 500 that absorbs and mitigates an external shock applied to the display panel 110. The buffer member 500 is formed of the cushion layer 510 and the film layer 520, and attaches the cushion layer 510 to the color filter substrate 114 or the polarizer 124, which is the uppermost layer of the display panel 110. In addition, a protective member 600 may be further included on the buffer member 500 to directly protect the display panel 110.

By using the buffer member 500 and the protective member 600, the thickness of the product can be reduced. The cushion layer 510 is attached to the uppermost layer of the display panel 110 to prevent movement of the buffer member 500. The filter layer 520 ensures the stability of the cushion layer 510 to simplify the assembly process of the display device 800 including the buffer member 500 and the protection member 600.

In addition, foreign matter or bubbles between the buffer member 500 and the protective member 600 may be prevented from occurring by the film layer 520, thereby improving reliability of the manufacturing process. Accordingly, display quality and productivity of the display device 800 can be improved.

According to such a display device, the display device includes a buffer member that absorbs and mitigates an external shock applied to the display panel. In addition, further comprising a protective member for directly protecting the display panel on the buffer member to minimize the thickness of the product.

The buffer member may be formed of a cushion layer and a film layer to simplify the assembling process of the display device and the protection member including the buffer member, and to improve the reliability of the manufacturing process. As a result, the productivity of the display device can be improved.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

Claims (5)

A display unit for displaying an image; A backlight assembly providing light to the display unit; A first accommodating container accommodating the display unit and the backlight assembly; A second storage container coupled to the first storage container to fix the display unit; And A cushioning layer having an adhesive property and a film layer supporting the cushioning layer, wherein a first side of the cushioning layer is bonded to the display unit, and a second side of the cushioning layer is a cushioning member to which the film layer is bonded. Display device comprising a. The display device of claim 1, wherein the film layer is anti-glare treated. The display device of claim 1, wherein the display unit comprises a display panel and a polarizer disposed on the display panel. And a first surface of the cushion layer is attached to the polarizing plate. The display apparatus of claim 3, wherein the second storage container includes an opening formed corresponding to the center of the display unit, and a peripheral portion fixing an edge of the display unit. And the buffer member is formed corresponding to the opening. The display device of claim 4, further comprising a protective member disposed on the second storage container, the protective member being formed to protect the display unit exposed through the opening.

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