KR20080054914A - Display device - Google Patents

Abstract

The present invention relates to a display device having an improved fastening structure without having an upper fixing member. The display device according to the exemplary embodiment of the present invention includes a display panel and a fixing member accommodating the display panel. The fixing member includes one or more protrusions protruding toward the side of the display panel, and the protrusions fix and support the display panel.

Description

Display device {DISPLAY DEVICE}

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

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

3 is a partial cross-sectional view of a display device according to a second exemplary embodiment of the present invention.

4 is a schematic perspective view of a display device according to a third exemplary embodiment of the present invention.

The present invention relates to a display device having an improved fastening structure without having an upper fixing member.

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 having an improved fastening structure without having an upper fixing member.

The display device according to the exemplary embodiment of the present invention includes a display panel and a fixing member accommodating the display panel. The fixing member includes one or more protrusions protruding toward the side of the display panel, and the protrusions fix and support the display panel.

The display panel may include a first panel and a second panel positioned on the first panel, and the first panel may be larger than the second panel and the protrusion may be positioned on an area where the first panel and the second panel do not overlap. The protrusion may be adjacent to the side of the second panel. The protrusion may also abut the side of the second panel.

The fixing member may include a bottom part accommodating the display panel and a side part extending in a direction perpendicular to the bottom part from an edge of the bottom part, and the protrusion may be spaced apart from the bottom part and connected to the side part.

The display device according to an exemplary embodiment of the present invention further includes a plurality of driver integrated circuit packages (driver IC package) attached to the display panel to transmit driving signals to the display panel, and including at least one protrusion part. May be located between the plurality of driving integrated circuit packages. The one or more protrusions may include a plurality of protrusions, and the plurality of protrusions may be spaced apart from each other.

The fixing member may further include another protrusion that presses and supports the plate surface of the display panel. The protrusion may support one edge of the display panel, and the other protrusion may support edges other than one edge.

The fixing member may include a bottom part accommodating the display panel and a side part extending vertically from the edge of the bottom part to the bottom part, and another protrusion may be spaced apart from the bottom part and connected to the side part. The closer the other protrusion is to the display panel, the wider the cross-sectional area cut in parallel to the plate surface of the display panel. Herein, the display panel may include a first panel and a second panel positioned on the first panel, and another protrusion may be supported by pressing the second panel.

The display device according to an exemplary embodiment of the present invention may further include a cover tape attached to the display panel and the protrusion. The display device may further include a printed circuit board applied to the display panel to provide a driving signal to the display panel, and the cover tape may surround the printed circuit board.

The display panel may include a display area displaying an image and a non-display area surrounding the display area, and the non-display area may be exposed to the outside. In addition, the display panel may be a liquid crystal display panel.

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 those skilled in the art can easily understand, the embodiments described below 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. Therefore, the regions shown in the drawings are originally only approximate, and their shapes are not intended to show the exact form of the regions, and are not intended to narrow the scope of the present invention.

1 illustrates an exploded view of a display device 100 according to a first 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 member 30 may be fixed while accommodating the internal parts of the display device 100.

In addition, the display device 100 includes a plurality of driver integrated circuit packages 222 and 232 and a printed circuit board 221 electrically connected to the display panel 20 to transmit a driving signal. do. Here, the driving integrated circuit packages 222 and 232 may include, for example, a chip on film (COF) or a tape carrier package (TCP). The driver integrated circuit packages 222 and 232 include gate driver integrated circuit packages 232 and data driver integrated circuit packages 222. The gate driving integrated circuit packages 232 are attached to one edge of the display panel 20 to supply a gate signal to the display panel 20. The data driver integrated circuit packages 222 may be attached to the other edge of the display panel 20 to supply the signal to the display panel 20 including other signals. The driving integrated circuit packages 222 and 232 include base films 223 and 233 and integrated circuit chips 224 and 234 respectively mounted thereon. Since the integrated circuit chip 224 is mounted on the rear surface of the base film 223, this is illustrated by a dotted line in FIG. 1.

The light source 10 emits light to be provided to the display panel 20. The light source 10 is mounted on the printed circuit film 11 and driven by receiving a driving signal. In this embodiment, a light emitting diode (LED) is shown as an example of the light source 10. Alternatively, a lamp may be used as the light source 10 or a light source in the form of a surface light source.

The light source cover 101 covers the light incident surface 141 of the light source 10 and the light guide plate 14 to protect the light source 10. 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 includes a TFT (thin film transistor) panel 22, a color filter panel 24, and liquid crystal (not shown) injected between both panels. Here, the TFT panel 22 is formed larger than the color filter panel 24 for mounting the driver integrated circuit packages 222 and 232. Therefore, as shown in FIG. 1, the TFT panel 22 and the color filter panel 24 do not overlap in some regions of the TFT panel 22 in which the driving integrated circuit packages 222 and 232 are mounted.

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 221. When an electrical signal is input from the printed circuit board 221, 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 driving integrated circuit packages 222 and 232 generate a plurality of timing signals for applying the data driving signal and the gate driving signal at an appropriate time. The signal is applied to the data line and the gate line of the display panel 20, respectively.

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. The polarizing plate 26 (shown in FIG. 2) is attached to the lower portion of the TFT panel 22 and the upper portion of the color filter panel 24, respectively, to polarize light passing through the display panel 20.

The fixing member 30 houses the light source 10, the optical sheet 12, the light guide plate 14, the reflective sheet 16, and the display panel 20. On the other hand, the display panel 20 includes a display area DA for displaying an image and a non-display area NDA surrounding the periphery of the display area DA. In the present exemplary embodiment, the non-display area NDA is exposed to the outside as the upper fixing member covering the edge of the display panel 20 is removed. As such, by removing the upper fixing member, the thickness and weight of the display device 100 can be reduced.

On the other hand, the driving integrated circuit package 222 is bent while wrapping the side of the fixing member 30 and folded in the direction of the arrow (dotted lines). Therefore, the printed circuit board 221 is fixed to the rear surface of the fixing member 30. The printed circuit board 221 is covered and protected by the cover member 40.

Conventionally, an upper fixing member is used to mount the display panel on the fixing member and to couple the display panel. As a result, the display panel can be securely fixed and foreign substances can be prevented from flowing into the display device. However, as the upper fixing member is removed to reduce the thickness of the display device, the display panel not only flows well but also breaks away from the display device.

In the present embodiment, the display panel 20 is stably stored in the fixing member 30 by using the fixing member 30 having the protrusion 32. 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 the enlarged circle of FIG. 2 shows an enlarged view of a portion where the protrusion 32 of the fixing member 30 is cut along the line II-II of FIG. 2.

2, the fixing member 30 includes a plurality of protrusions 32. The plurality of protrusions 32 are positioned between the driving integrated circuit packages 222 surrounding the side of the fixing member 30. The plurality of protrusions 32 are spaced apart from each other with the driving integrated circuit package 222 interposed therebetween.

As shown in the enlarged circle of FIG. 2, the protrusion part 32 is located in the area | region which the TFT panel 22 and the color filter panel 24 do not overlap. That is, the protruding portion 32 is located on the plate surface 221 of the TFT panel 22 to press and support the TFT panel 22. Therefore, the display panel 20 can be stored stably.

The fixing member 30 includes a bottom portion 36, a side portion 34 and a protrusion 32. The bottom portion 36 is parallel to the plate surface of the display panel 20 and extends in the xy plane direction. On the bottom 36, the reflective sheet 16, the light guide plate 14, and the optical sheets 12 are sequentially received. The side part 34 is connected to the bottom part 36 and extends in the z-axis direction from the edge of the bottom part 36. Since the protrusion 32 is connected to the side portion 34 and extends in a direction parallel to the bottom portion 36, the protrusion 32 is spaced apart from the bottom portion 36 with the side portion 34 interposed therebetween. Here, the protrusion 32 is adjacent to the side of the color filter panel 24. That is, the protrusion 32 may be in contact with the side of the color filter panel 24 or adjacent to the side of the color filter panel 24. In FIG. 2, the protrusion 32 is in contact with the side surface of the color filler panel 24. Therefore, the display panel 20 can be stably fixed to the protrusion 32.

3 schematically illustrates a cross section of the display device 100 ′ according to the second embodiment of the present invention. Since the cross-sectional structure of the display device 100 ′ of FIG. 3 is similar to that of the display device 100 shown in the enlarged circle of FIG. 2, the same reference numerals are used for the same parts, and detailed description thereof will be omitted.

3 is a cross-sectional view of the protrusion 32. The cover tape 50 also covers the driving integrated circuit package 222 (shown in FIG. 2) while covering the printed circuit board 221, so that a portion of the side surface protrudes as shown in FIG. 3.

As shown in FIG. 3, the display device 100 ′ includes a cover tape 50. The cover tape 50 is attached to the fixing member 30 and the display panel 20. That is, the cover tape 50 is in close contact with the upper edge of the color filter panel 24 and the fixing member 30. Therefore, the cover tape 50 may fix the display panel 20 to the fixing member 30 more firmly. Since the cover tape 50 surrounds the side surface of the display device 100 ′, the inflow of foreign substances from the outside can be efficiently prevented.

4 schematically shows a display device 100 "according to the third embodiment of the present invention. The display device 100" of FIG. 4 is similar to the display device 100 of FIG. The sign is used and its detailed description is omitted.

As shown in FIG. 4, the display device 100 ″ includes another protrusion 60. Hereinafter, for convenience, the protrusion 32 is referred to as a first protrusion, and the other protrusion 60 is referred to as a second protrusion. It will be described by calling.

The second protrusion 60 is positioned at an edge other than the edge of the display panel 20 where the first protrusion 32 is positioned. As a result, since the second protrusion 60 supports the edge of the display panel 20 together with the first protrusion 32, the display panel 20 is not detached from the display device 100 ″ without the display device 100 ″ being removed. Is stored stably.

The second protrusion 60 is pressed to support the plate surface of the display panel 20. Specifically, the second protrusion 60 presses and supports the plate surface of the color filter panel 24. The second protrusion 60 is formed at a position similar to the first protrusion 32. The second protrusion 60 is connected to the side portion 34 and spaced apart from the bottom portion 36. In addition, the second protrusion 60 has an inclined shape. More specifically, the second protrusion 60 has a shape in which the cross-sectional area cut parallel to the xy plane becomes wider as the plate surface of the display panel 20 approaches. Therefore, the second protrusion 60 may stably support the color filter panel 24.

A fixing member having a protrusion may be used to firmly fix the display panel without using the upper fixing member. In addition, the display panel may be stably fixed by using a cover tape surrounding the edge of the display panel and the fixing member. Since the cover tape surrounds the side of the display device, the display panel may be prevented from being contaminated even if foreign matters are introduced from the outside.

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 (16)

Display panel; And A fixing member accommodating the display panel; Including, The fixing member includes one or more protrusions protruding toward the side of the display panel, and the protrusions fix and support the display panel. The method of claim 1, The display panel, A first panel; And A second panel located above the first panel Including, The first panel is larger than the second panel, and the protrusion is positioned on an area where the first panel and the second panel do not overlap. The method of claim 2, The protrusion is adjacent to the side of the second panel. The method of claim 3, The protrusion is in contact with a side surface of the second panel. The method of claim 1, The fixing member, A bottom part accommodating the display panel; And A side portion extending in the vertical direction from the edge of the bottom portion to the bottom portion More, The protrusion is spaced apart from the bottom and connected to the side part. The method of claim 1, A plurality of driver integrated circuit packages (driver IC package) attached to the display panel to transmit driving signals to the display panel; The at least one protrusion is positioned between the plurality of driving integrated circuit packages. The method of claim 6, The at least one protrusion includes a plurality of protrusions, and the plurality of protrusions are spaced apart from each other. The method of claim 1, The fixing member further includes another protrusion that presses and supports the plate surface of the display panel. The method of claim 8, And the protrusion supports one edge of the display panel and the other protrusion supports an edge other than the one edge. The method of claim 8, The fixing member, A bottom part accommodating the display panel; And A side portion extending in the vertical direction from the edge of the bottom portion to the bottom portion More, The another protrusion is spaced apart from the bottom and connected to the side part. The method of claim 8, The display device of claim 2, wherein the protruding portion is closer to the display panel and has a larger cross-sectional area cut parallel to the plate surface of the display panel. The method of claim 8, The display panel, A first panel; And A second panel located above the first panel And the another protrusion supporting the second panel by pressing the second protrusion. The method of claim 1, And a cover tape attached to the display panel and the protrusion. The method of claim 13, And a printed circuit board adapted to be electrically connected to the display panel to provide a driving signal to the display panel, wherein the cover tape surrounds the printed circuit board. The method of claim 1, The display panel, A display area for displaying an image; And A non-display area surrounding the display area Including, The non-display area is exposed to the outside. The method of claim 1, The display panel is a liquid crystal display panel.

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