KR20080052903A - Display device - Google Patents

Abstract

A display apparatus is provided to prevent damage of a display panel by using a fixed member which is integrally formed with an elastic member. A display apparatus(100) includes a display panel(20), a first fixed member(30), a second fixed member(32), and an elastic member(31). The display panel displays images. The display panel is placed in the first fixed member. The second fixed member wraps edges of the display panel and fixes the display panel to the first fixed member. The elastic member wraps at least one of edges of the display panel. One end of the elastic member is attached to the first fixed member and a slant surface is formed on another end of the elastic member. The slant surface is toward the inside of the display panel. The elastic member has a conductive property to attach foreign material on the elastic member.

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.

3A through 3C are diagrams sequentially illustrating a process of assembling the display device of FIG. 1.

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

The present invention relates to a display device that can protect the display panel from external shocks well.

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). Therefore, the liquid crystal display device is used in a small 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 that can protect a display panel from external impact.

According to an embodiment of the present invention, a display device includes: (i) a display panel for displaying an image, ii) a first fixing member on which the display panel is seated, and iii) a display panel on the first fixing member while surrounding an edge of the display panel. A second fixing member to be fixed, and iii) an elastic member surrounding at least one edge of the display panel. Here, one end of the elastic member is attached to the first fixing member, the inclined surface is formed on the other end of the elastic member. The inclined surface may face the inside of the display panel. The elastic member is conductive so that foreign matter can be attached to the elastic member.

The display device according to an exemplary embodiment of the present invention further includes a printed circuit board attached to the display panel and transmitting a driving signal to the display panel, wherein the elastic member and the printed circuit board may be positioned with the display panel therebetween. have. The display panel may include a display area for displaying an image and a non-display area surrounding the display area, and the other end of the elastic member may be positioned on the non-display area.

The elastic member may include (i) a first elastic portion attached to the first fixing member, ii) a second elastic portion connected to the first elastic portion to cover the side surface of the display panel, and iii) a second elastic portion connected to the second elastic portion. And a third elastic part positioned between the first fixing member and the display panel. The second elastic part and the third elastic part may be bent and connected in the same direction from the first elastic part and the second elastic part, respectively. The first fixing member and the elastic member may be integrally formed. In addition, the elastic member may be attached to the first fixing member by a double-sided tape.

The strength of the elastic member may be less than the strength of the first fixing member. In addition, the raw material of the first fixing member and the raw material of the elastic member may be different. The first fixing member may be made of resin or a metal material. The elastic member may be made of silicon rubber. The first fixing member and the elastic member can be manufactured by a co-injection molding method.

The display device according to an exemplary embodiment may further include a light source that provides light to the display panel, and the display panel may be a liquid crystal display panel.

On the other hand, the method of assembling the display device according to an embodiment of the present invention, iii) providing a first fixing member, ii) the elastic member having an inclined surface formed along at least one edge of the first fixing member, the first fixing member Providing the display panel over the first fixing member such that the elastic member is adjacent to the side of the display panel, and iii) the second fixing member is inclined surface of the elastic member while positioning the second fixing member over the display panel. Presses, (iii) the elastic member is bent toward the inside of the display device to cover the edge of the display panel, and iii) the second fixing member covers the edge of the display panel and the edge of the first fixing member. .

In the step of providing the elastic member, the inclined surface may face outward of the first fixing member. Further, in the step of providing the elastic member, the elastic member may be integrally formed with the first fixing member or the elastic member may be attached to the first fixing member using a double-sided tape. In addition, one end of the elastic member on which the inclined surface is formed may be oriented in a direction perpendicular to the plate surface of the first fixing member.

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 used terms defined beforehand are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense 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 an exploded view of the display device 100 according to an exemplary embodiment.

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, the apparatus further includes a plurality of optical sheets 44 and a diffusion plate 40 through which the light emitted from the light source 10 passes. The fixing members 30 and 34 are used to fix the light source 10, the optical sheets 44, and the diffusion plate 40. In addition, the fixing members 30 and 32 fix the display panel 20.

The display device 100 includes a plurality of driving integrated circuit packages 222 and 232 and printed circuit boards 221 and 231 electrically connected to the display panel 20 to transmit a driving signal. 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 driving integrated circuit packages include gate driving integrated circuit packages 232 and data driving 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.

The light source 10 emits light to be supplied to the display panel 20. 1 shows a lamp as an example of a light source 10. Alternatively, a light emitting diode (LED) may be used as the light source, and a light source in the form of a line light source or a surface light source may be used.

The reflective sheet 42 is disposed on the bottom surface of the third fixing member 34 to reflect the light emitted from the light source 10 toward the display panel 20. The diffusion plate 40 diffuses and uniformizes the light emitted from the light source 10, and the plurality of optical sheets 44 collect the light and provide 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.

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 connected to the printed circuit boards 221 and 231, respectively. When electrical signals are input from the printed circuit boards 221 and 231, electrical signals are 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 to polarize the light passing through the display panel 20.

The fixing member includes a first fixing member 30, a second fixing member 32, and a third fixing member 34. The third fixing member 34 houses the light source 10, the diffuser plate 40, the reflective sheet 42, and the optical sheet 44. The first fixing member 30 is coupled to the third fixing member 34 to fix and support the light source 10, the diffusion plate 40, the reflective sheet 42, and the optical sheet 44. Herein, the display panel 20 is seated on the first fixing member 30. The second fixing member 32 fixes the display panel 20 to the first fixing member 30 while surrounding the edge of the display panel 20 seated on the first fixing member 30.

Conventionally, a separate spacer is provided on the first fixing member and the second fixing member to fix the display panel. Specifically, a spacer made of rubber material was attached to the inside of the first fixing member and the second fixing member using a double-sided tape. As a result, it was possible to protect the display panel located inside the fixing members from external impact and prevent inflow of foreign substances from the outside. However, such a structure may be vulnerable to vibration shocks applied from the side surface because only the upper and lower surfaces thereof are protected based on the plate surface of the display panel. In addition, in the attaching method through the double-sided tape, a phenomenon in which the spacer is separated from the fixing member by an external impact occurs. In this case, since the spacer is detached and does not support the display panel, the display panel is damaged during external impact.

In the present embodiment, the display panel 20 is effectively protected from external impact by using the first fixing member 30 having the elastic member 31 formed integrally.

As shown in FIG. 1, the first fixing member 30 includes an elastic member 31 having one end connected to the first fixing member 30. The elastic member 31 is attached on the xy surface of the first fixing member 30 and is located along the x axis and the y axis. The portion where the elastic member 31 is positioned corresponds to a portion of the side surface of the display panel 20 to be mounted on the first fixing member 30 to which the driving integrated circuit packages 222 and 232 are not connected. The portion where the driving integrated circuit packages 222 and 232 are located is difficult to install the first fixing member 30 having a long shape because the space is narrow. Therefore, the elastic member 31 is installed in a portion where the driving integrated circuit packages 222 and 232 are not located. As a result, the elastic member 31 and the printed circuit boards 221 and 231 are disposed to face each other with the display panel 20 therebetween.

Meanwhile, the display panel 20 to be mounted on the first fixing member 30 includes a display area DA for displaying an image and a non-display area NDA surrounding an outer portion of the display area DA. In a state in which the display device 100 of FIG. 1 is coupled, the elastic member 31 has one lower end thereof attached to the first fixing member 30, and the other upper end thereof has a non-display area NDA of the display panel 20. ).

FIG. 2 illustrates a combination of the display device 100 of FIG. 1, and an enlarged portion of the first fixing member 30 is shown in the enlarged circle of FIG. 2.

As shown in the enlarged circle of FIG. 2, the elastic member 31 surrounds the side surface of the display panel 20 to protect the display panel 20 from external impact. Therefore, the edge of the display panel 20 which is weak to impact can be protected.

The elastic member 31 includes a first elastic portion 311, a second elastic portion 312 and a third elastic portion 313. The first elastic part 311 is parallel to the plate surface 201 of the display panel 20 and is attached to the first fixing member 30. As a result, the first elastic part 311 contacts the plate surface 201 of the display panel 20. The second elastic portion 312 is connected to the first elastic portion 311 and bent in the + z-axis direction to surround the side surface of the display panel 20. The third elastic part 313 is connected to the second elastic part 312 and is bent in the -x-axis direction to cover the top surface of the display panel 20. Here, the inclined surface 3131 formed at one end of the third elastic portion 313 faces the inside of the display panel 20. As described above, the elastic member 31 surrounds the edge of the display panel 20 so that the display panel 20 can be efficiently protected from external impact.

On the other hand, the elastic member 31 contains a conductive material. As illustrated by the arrow in the enlarged circle of FIG. 2, when the foreign matter P is introduced into the display device 100 from the outside of the display device 100, the foreign matter P is attached to the elastic member 31. do. That is, when the elastic member 31 includes a conductive material, a triboelectricity is applied, so that the foreign matter P is attached to the elastic member 31. Therefore, malfunction of the internal parts of the display device 100 due to the foreign matter or the like can be prevented.

The first fixing member 30 and the elastic member 31 may be manufactured together using a co-injection molding method. The double injection method is a method of injecting one molding by applying two kinds of molding materials. Specifically, the injection molding machine is provided with two injection parts for heating and melting the material for injection. As the injection part moves back and forth, different materials are sequentially injected into the mold. By injecting the secondary injection material before the primary injected material is completely solidified, a molding including different materials can be produced. Since the specific details of the double injection method can be easily understood by those skilled in the art, detailed description thereof will be omitted.

The first fixing member 30 may be manufactured using the above-described double injection method. Therefore, since the first fixing member 30 and the elastic member 31 can be formed together in one process, the manufacturing process is simplified. In addition, since the elastic member 31 is integrally coupled to the first fixing member 30, the elastic member 31 is not separated.

The strength of the elastic member 31 is smaller than the strength of the first fixing member 30. Since the elastic member 31 contacts the display panel 20 made of glass, the strength of the elastic member 31 must be relatively small so that the display panel 20 is not broken by an impact. On the other hand, since the first fixing member 30 fixes the display device 100, the strength of the first fixing member 30 must be relatively large to protect internal components. For example, the first fixing member 30 may be made of a resin or a metal material. Thus, internal parts can be protected from external shocks. On the other hand, the elastic member 31 may be made of a silicon rubber (silicon rubber) material. In addition, it is good that the raw material of the 1st fixing member 30 and the raw material of the elastic member 31 are excellent in mutual bonding.

3A to 3C sequentially illustrate an assembling process of the display device 100.

First, as shown in FIG. 3A, a first fixing member 30 provided with an elastic member 31 is provided. The elastic member 31 is integrally formed with the first fixing member 30, and one end of the elastic member 31 is attached to the first fixing member 30. The remaining portion of the elastic member 31 except the portion attached to the first fixing member 30 faces the + z axis direction.

Next, as shown in FIG. 3B, the display panel 20 is moved over the elastic member 31 in the direction of the arrow to mount the display panel 20 on the support surface 3111 of the elastic member 31. The support surface 3111 is parallel to the plate surface of the display panel 20 supported by the elastic member 31. The lower surface of the display panel 20 directly contacts the supporting surface 3111 of the elastic member 31, and the elastic member 31 is adjacent to the side surface of the display panel 30. In this case, the inclined surface 3131 formed at the other end of the elastic member 31 faces the outside of the display panel 20.

In the above-described state, the second fixing member 32 is disposed on the first fixing member 30 and the second fixing member 32 is moved in the direction of the arrow. At this time, the second fixing member 32 presses the inclined surface 3131 of the elastic member 31 so that the elastic member 31 is bent toward the inside of the display panel 20, as indicated by the arrow. Since the inclined surface 3131 faces outward, when the elastic member 31 is pressed by the second fixing member 32, the elastic member 31 is easily bent inward.

As a result, as shown in FIG. 3C, the elastic member 31 is bent by the second fixing member 32 to be in close contact with the side surface and the top surface of the display panel 20. Therefore, since the elastic member 31 surrounds the side surface of the display panel 20, there is no possibility that the display panel 20 may be damaged.

4 illustrates a display device 100 ′ according to another exemplary embodiment of the present invention. Since the display device 100 ′ of FIG. 4 is similar to the display device 100 of FIG. 1, the same reference numerals are used for the same parts, and a detailed description thereof will be omitted. The enlarged circle of FIG. 4 shows the cross section of the 1st fixing member 30 'and the elastic member 31'.

As shown in FIG. 4, the elastic member 31 ′ may be attached onto the first fixing member 30 ′ by the double-sided tape 311 ′. Therefore, the elastic member 31 'can be easily attached to the first fixing member 30'.

The display panel may be protected from external shock by using a fixing member in which the elastic member is integrally formed. Here, the elastic member is formed to cover not only the upper and lower surfaces of the display panel but also the side surfaces thereof, so that the display panel can be well protected. In addition, when foreign matter is introduced from outside, the display panel is first adsorbed to the elastic member positioned on the side of the display panel, thereby preventing the display panel from being contaminated. Since the fixing member is formed integrally with the elastic member, not only is the process simple, but there is no possibility that the elastic member is separated from the fixing member. Therefore, damage to the display panel can be prevented.

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 (20)

A display panel displaying an image; A first fixing member on which the display panel is mounted; A second fixing member which surrounds an edge of the display panel and fixes the display panel to the first fixing member; And An elastic member surrounding at least one edge of the display panel Including, One end of the elastic member is attached to the first fixing member, the other end of the elastic member has a display device formed with an inclined surface. The method of claim 1, The inclined surface faces the inside of the display panel. The method of claim 1, The display device of claim 1, wherein the elastic member is conductive and foreign matter is attached to the elastic member. The method of claim 1, And a printed circuit board attached to the display panel to transmit a driving signal to the display panel, wherein the elastic member and the printed circuit board are positioned with the display panel therebetween. The method of claim 1, The display panel includes a display area for displaying an image; And A non-display area surrounding the display area Including, The other end of the elastic member is positioned on the non-display area. The method of claim 1, The elastic member, A first elastic part attached to the first fixing member; A second elastic part connected to the first elastic part to cover a side surface of the display panel; And A third elastic part connected to the second elastic part and positioned between the first fixing member and the display panel Display device comprising a. The method of claim 6, The display device of claim 2, wherein the second elastic portion and the third elastic portion are bent in the same direction from the first elastic portion and the second elastic portion, respectively. The method of claim 6, The first elastic unit is attached to the first fixing member by a double-sided tape. The method of claim 1, The display device of which the first fixing member and the elastic member are integrally formed. The method of claim 1, The strength of the elastic member is less than the strength of the first fixing member. The method of claim 1, The display device of which the material of the first fixing member is different from the material of the elastic member. The method of claim 11, The first fixing member is made of resin or a metal material. The method of claim 11, The elastic member is a display device made of a silicon rubber (silicon rubber) material. The method of claim 1, The first fixing member and the elastic member are manufactured by a co-injection method. The method of claim 1, And a light source for providing light to the display panel, wherein the display panel is a liquid crystal display panel. As a method of assembling the display device, Providing a first fixing member; Providing an elastic member having an inclined surface along at least one edge of the first fixing member on the first fixing member; Providing a display panel on the first fixing member such that the elastic member is adjacent to a side of the display panel; Pressing the inclined surface of the elastic member by the second fixing member while positioning the second fixing member on the display panel; Bending the elastic member toward the inside of the display device to surround an edge of the display panel; And The second fixing member covering an edge of the display panel and an edge of the first fixing member Assembly method of a display device comprising a. The method of claim 16, And providing the elastic member, wherein the inclined surface faces an outer side of the first fixing member. The method of claim 16, And providing the elastic member, wherein the elastic member is integrally formed with the first fixing member. The method of claim 16, In the providing of the elastic member, attaching the elastic member to the first fixing member using a double-sided tape. The method of claim 16, And providing the elastic member so that one end of the elastic member having the inclined surface faces in a direction perpendicular to the plate surface of the first fixing member.

Images