KR20080057894A - Display device - Google Patents

Abstract

A display device is provided to reduce the thickness of the display device by using an integral type fixing unit. A display device includes a display panel(20) and a fixing unit(30). The fixing unit fixes the display panel. The fixing unit includes the first fixing member(32) and the second fixing member(34). The first fixing member supports the display panel. The second fixing member is formed with the first fixing member in one body. The second fixing member includes an opening part(342) and a bending part(341). The bending part is connected with one or more edge parts of the opening part, and is bent toward an internal side of the display device.

Description

Display device {DISPLAY DEVICE}

1 is a schematic exploded perspective view of a display device according to an exemplary embodiment.

FIG. 2 is a combined perspective view of the display device of FIG. 1.

3 is a partial cross-sectional view taken along the line III-III of FIG. 2.

The present invention relates to a display device that is slim and resistant to external impact.

Various types of display devices have been developed. Among various display devices, liquid crystal display devices (LCDs), which have improved performances due to rapidly developing semiconductor technologies, are widely used.

The liquid crystal display device can be miniaturized, lightweight, and low power, and thus can replace the existing cathode ray tube (CRT). Accordingly, the liquid crystal display device is used in a small sized product such as a mobile phone, a personal digital assistant (PDA) and a portable multimedia player (PMP), as well as a monitor and a TV, which are medium and large products. On the other hand, since the liquid crystal display device is not a self-luminous device, a light source for supplying light is required.

An object of the present invention is to provide a display device capable of slimming and maintaining strength.

A display device according to an exemplary embodiment of the present invention includes a display panel and a fixing unit that fixes the display panel. Here, the fixing unit includes a first fixing member supporting the display panel and a second fixing member integrally formed with the first fixing member. The second fixing member includes an opening and a bending portion connected to one or more edges of the opening and bent into the display device.

Also, the first fixing member may fill between the opening and the bending part. A burr may be formed at one end of the bending portion. The bending part may be connected to one edge of the opening and may be formed by cutting from the opening. The bending part may be formed by punching. Meanwhile, burrs may be formed inside the other edge of the opening. The length of the edge of the bend and the edge of the opening may be substantially the same.

In addition, the strength of the second fixing member may be greater than that of the first fixing member. For example, the second fixing member may be made of a metal material, and the first fixing member may be made of a resin material. The stationary unit can be manufactured by insert molding method.

In addition, the display panel may be a liquid crystal display panel, and the display device according to an exemplary embodiment of the present invention may be used for a portable product.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As can be easily understood by those skilled in the art, the following embodiments may be modified in various forms without departing from the concept and scope of the present invention. Where possible, the same or similar parts are represented using the same reference numerals in the drawings.

When a portion is referred to as being "above" another portion, it may be just above the other portion or may be accompanied by another portion in between. In contrast, when a part is mentioned as "directly above" another part, no other part is intervened in between.

It is to be understood that the terms first, second and third are used to describe various parts, components, regions, layers and / or sections, but are not limited to these. These terms are only used to distinguish one part, component, region, layer or section from another part, component, region, layer or section. Accordingly, the first portion, component, region, layer or section described below may be referred to as the second portion, component, region, layer or section without departing from the scope of the invention.

The terminology used herein is for reference only to specific embodiments and is not intended to limit the invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the term "comprising" embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

Terms indicating relative spaces such as "below" and "above" may be used to more easily describe the relationship between different parts of one part shown in the drawings. These terms are intended to include other meanings or operations of the device in use with the meanings intended in the figures. For example, when the device in the figure is reversed, any parts described as being "below" of other parts are described as being "above" other parts. Thus, the exemplary term "below" encompasses both up and down directions. The device can be rotated 90 degrees or at other angles, the terms representing relative space being interpreted accordingly.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Commonly defined terms used are additionally interpreted as having a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted as ideal or very formal meaning unless defined.

Embodiments of the invention described with reference to perspective and cross-sectional views specifically illustrate ideal embodiments of the invention. As a result, various modifications of the drawings, for example, manufacturing methods and / or specifications, are expected. Thus, the embodiment is not limited to the specific form of the illustrated region, but includes, for example, modification of the form by manufacture. For example, regions shown or described as flat may have properties that are generally rough and / or rough. Also, portions shown to have sharp angles may be rounded. Accordingly, the regions shown in the figures are only approximate in nature, and their forms are not intended to depict the exact form of the regions and are not intended to narrow the scope of the invention.

1 illustrates a display device 100 according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the display device 100 includes a light source 10 that greatly provides light, and a display panel 20 that receives light and displays an image. In addition, a plurality of optical sheets 12, a light guide plate 14, and a reflective sheet 16 are included to efficiently use the light emitted from the light source 10. The fixing unit 30 may be fixed while accommodating internal parts of the display device 100.

The light source 10 emits light to be provided to the display panel 20. The light source 10 is mounted on the flexible printed circuit board 101 and electrically connected to a wiring pattern formed on the flexible printed circuit board 101. The flexible printed circuit board 101 is connected to the printed circuit board 40 by the connecting portion 102. Therefore, the light source 10 is driven by receiving a driving voltage from the printed circuit board 40. In this embodiment, a light emitting diode (LED) is shown as an example of the light source 10. Since the light emitting diode is easily miniaturized, it is suitable for use as a portable product.

The light guide plate 14 guides the light emitted from the light source 10 to the display panel 20. The reflective sheet 16 is positioned under the light guide plate 14 to reflect the light emitted from the light source 10 toward the display panel 20. The plurality of optical sheets 12 diffuses and condenses the light emitted from the light source 10 and provides the light to the display panel 20.

For example, the display panel 20 may use a liquid crystal display panel. In addition, a display panel such as an organic light emitting display panel may be used. The display panel 20 is electrically connected to the printed circuit board 40 through a flexible printed circuit film (FPC film) 28. Although the flexible printed circuit film 28 is shown to be broken in FIG. 1, it is actually connected.

The display panel 20 includes a TFT (thin film transistor) panel 22, a color filter panel 24, and liquid crystal (not shown) injected between both panels. The TFT panel 22 faces the color filter panel 24, and a plurality of TFTs are formed in a matrix form. The data line is connected to the source terminal of the TFT panel 22, and the gate line is connected to the gate terminal. A pixel electrode made of conductive indium tin oxide (ITO) is formed on the drain terminal.

The data line and gate line of the TFT panel 22 are respectively connected to the printed circuit board 40. When an electrical signal is input from the printed circuit board 40, an electrical signal is input to the source terminal and the gate terminal of the TFT. The TFT is turned on or off in accordance with the input of the electrical signal so that the electrical signal necessary for pixel formation is output to the drain terminal. The integrated circuit chip 26 is mounted on the TFT panel 22 to control the display panel 20. The integrated circuit chip 26 generates a plurality of timing signals for applying data driving signals and gate driving signals at appropriate times. The signals are applied to the data line and the gate line of the display panel 20, respectively. A protective film 261 is coated around the integrated circuit chip 26 to protect the integrated circuit chip 26.

The color filter panel 24 is located on the TFT panel 22 opposite the TFT panel 22. The color filter panel 24 is a substrate in which RGB pixels, which are color pixels in which a predetermined color is expressed while light passes, are formed by a thin film process. The front surface of the color filter panel 24 is coated with a common electrode made of ITO.

When power is applied to the gate terminal and the source terminal of the TFT and the TFT is turned on, an electric field is formed between the pixel electrode and the common electrode. The arrangement angle of the liquid crystal injected between the TFT panel 22 and the color filter panel 24 is changed by the electric field. The light transmittance is changed according to the changed arrangement angle to obtain a desired image. A polarizer (not shown) is attached to the lower portion of the TFT panel 22 and the upper portion of the color filter panel 24 to polarize the light passing through the display panel 20.

The printed circuit board 40 includes a tail portion 401 and a connector 402. The connector 402 is installed at one end of the tail part 401 to transmit an external signal to the printed circuit board 40. In the case of a cellular phone, the connector 402 is connected with a keypad.

The fixing unit 30 includes a first fixing member 32 and a second fixing member 34. The first fixing member 32 and the second fixing member 34 accommodate the internal parts of the display device 100.

Conventionally, internal parts of the display device are fixed by combining a bottom chassis made of metal and a mold frame made of resin. That is, a hole was formed in the bottom chassis, and a protrusion was formed in the mold frame. In this case, not only the fastening force of the bottom chassis and the mold frame is weak, but also the thickness of the display device increases because the bottom chassis surrounds the mold frame.

In this embodiment, the first fixing member 32 and the second fixing member 34 are integrally formed. Therefore, the display device 100 may be thinned by minimizing the thickness of the fixing unit 30. Hereinafter, this will be described in detail with reference to FIG. 2.

FIG. 2 illustrates the display device 100 of FIG. 1 in combination, and a cross section of the first fixing member 32 and the second fixing member 34 is cut out differently from each other in the enlarged circle of FIG. .

Referring to FIG. 2, the fixing unit 30 includes a first fixing member 32 and a second fixing member 34 having different strengths from each other. The first fixing member 32 and the second fixing member 34 are integrally formed.

The stationary unit 30 can be manufactured by an insert molding method. The insert molding method is a method of manufacturing the fixed unit 30 in one piece by inserting the second fixing member 34 into the injection mold and then injecting the first fixing member 32. A more detailed description of the insert molding is omitted since it can be easily understood by those skilled in the art. As described above, the insert molding can form the first fixing member 32 and the second fixing member 34 together at once, so that both assembly processes can be omitted. In addition, since the first fixing member 32 and the second fixing member 34 are integrally formed, the first fixing member 32 is not separated from the second fixing member 34.

The strength of the second fixing member 34 is greater than that of the first fixing member 32. Since the first fixing member 32 is in contact with the display panel 20 made of glass, the strength of the first fixing member 32 must be relatively low so that the display panel 20 is not broken by an impact. Therefore, the 1st fixing member 32 can be manufactured from a resin material. On the contrary, since the second fixing member 34 fixes the display device 100, the strength of the second fixing member 34 must be relatively high to protect the internal components. For example, the second fixing member 34 may be made of a metal material. Thus, internal parts can be protected from external shocks.

As shown in the enlarged circle of FIG. 2, the second fixing member 34 includes a bending portion 341 and an opening 342. The bending part 341 is bent toward the inside of the display device 100 while being connected to the edge 341 of the opening 342. The bending part 341 may be punched out from the opening 342 using a punching process or the like. That is, when the opening 342 is formed on the side surface of the second fixing member 34, at least one edge is not cut without forming the opening 342 along all the edges thereof. Next, the bent portion 341 may be formed by bending the cut portion to the inside of the display device 100. For example, as shown in the enlarged circle of FIG. 2, the bending part 341 is connected to the edge 341 of the opening part 342. Since the bending portion 341 is formed from the opening 342, the length of the edge 3411 of the bending portion 341 and the other edge 3425 of the opening 342 is the same.

In the present embodiment, the edges 341 of the openings 342 are connected to the bending portions 341 without cutting the edges to form the openings. Accordingly, the first fixing member 32 may be filled between the bending portion 341 and the opening 342. As a result, since the contact area between the 1st fixing member 32 and the 2nd fixing member 34 becomes large, the fastening force of both can be strengthened. When the openings are formed along all the edges, the contact area is small because the resin material is filled only in the openings during insert molding. Therefore, the fastening force is weak. Moreover, since the size of the opening 342 is small, it is not easy to form the opening by cutting all the edges.

In the present exemplary embodiment, not only the fastening structure of the fixing unit 30 may be strengthened by using the bending part 341, but a small opening 342 may be formed. When the display device 100 is used in a small product, the size of the opening 342 should be small, which is suitable for applying the present embodiment. In FIG. 2, only one edge 341 of the opening 342 is connected to the bending part 341, but the bending part may be connected together with the other edge of the opening.

3 is a partial cross-sectional view of the display device 100 taken along line III-III of FIG. 2. 3 illustrates a cross-sectional shape of the bending part 341 in more detail.

Since the bending part 341 is formed by being punched from the opening part 342, burrs 3412 are formed inside one end 3413 of the bending part 341 and the edge 3423 of the opening part 342. Since the contact area between the first fixing member 32 and the second fixing member 34 is increased due to the burr 3412, the fastening force of the first fixing member 32 and the second fixing member 34 can be further improved. have.

The thickness of the display device may be reduced by using the integrated fixing unit. The bending part of the second fixing member is inserted into the first fixing member to firmly couple the first fixing member and the second fixing member. Therefore, the durability of the display device can be improved while improving the strength of the fixed unit. In addition, it is easy to form an opening in the second fixing member.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

Claims (14)

Display panel; And A fixing unit fixing the display panel A display device comprising: The fixed unit, A first fixing member supporting the display panel; And A second fixing member integrally formed with the first fixing member Including, The second fixing member, Openings; And A bending part connected to at least one edge of the opening and bent into the display device; Display device comprising a. The method of claim 1, The first fixing member fills the gap between the opening and the bending part. The method of claim 1, And a burr formed at one end of the bending portion. The method of claim 1, The bending unit is connected to one edge of the opening. The method of claim 4, wherein The bending portion is formed by cutting from the opening. The method of claim 5, And the bending part is formed by punching. The method of claim 4, wherein And a burr formed inside another edge of the opening. The method of claim 1, And a length of an edge of the bending portion and an edge of the opening portion. The method of claim 1, The strength of the second fixing member is greater than the strength of the first fixing member. The method of claim 9, The second fixing member is made of a metal material. The method of claim 9, The first fixing member is made of a resin material. The method of claim 1, And the fixing unit is manufactured by an insert molding method. The method of claim 1, The display panel is a liquid crystal display panel. The method of claim 1, The display device is used for a portable product.

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