KR20150000755A

KR20150000755A - Media device

Info

Publication number: KR20150000755A
Application number: KR20130073274A
Authority: KR
Inventors: 박성현
Original assignee: 엘지전자 주식회사
Priority date: 2013-06-25
Filing date: 2013-06-25
Publication date: 2015-01-05

Abstract

The present invention provides a display device comprising: a display formed to output visual information; a light source arranged in a back direction of the display and configured to project light on the display; A light guide plate disposed between the display and the light source; a body which is formed so as to form an outer appearance and whose one side is spaced apart from one side of the display so as not to apply strain to the display; And a reflection pattern formed on the light guide plate and processed to regularly reflect the incident light.

Description

{MEDIA DEVICE}

The present invention relates to a media device having a display.

The media device includes both a device for recording and reproducing video and a device for recording and reproducing audio. An apparatus for recording and reproducing video includes a TV, a monitor, a projector, and the like as a video display device.

As the functions of the media devices are diversified, they are implemented in the form of a multimedia player having multiple functions such as photographing and video shooting, games, and broadcast reception, in addition to music and video file playback functions.

Various new attempts have been made in terms of hardware or software to support and enhance the functions of such media devices. Attempts at the hardware level include structural changes and improvements to improve the appearance of media devices.

As one example of the structural change and improvement, a structural improvement is made to make a bezel which is arranged to enclose a display so as to be able to use a wide screen in comparison with the number of inches. However, when the bezel is made thin, there is a problem that light leakage occurs through the side of the window. In addition, when an IPS panel is used to reduce the volume of a media device, a light beam phenomenon occurs.

Light leakage refers to the release of light into a space separated by the tolerance between parts, and the light spring means that the display panel is deformed under stress and the light is emitted to the outside. Light leakage and light leakage are major deficiencies that cause media devices to be recognized as bad, and they are in a trade off relationship. That is, when the case surrounding the display is strongly adhered to the display, stress is applied to the display to cause a light leakage phenomenon, and if the case and the display are not closely contacted to reduce the stress on the display, .

Therefore, there is a need for a structure of a media device that can prevent both 'light spot' and 'light leakage' phenomenon which are in trade-off relation with each other.

The present invention is to provide a media device having a structure for preventing light leakage and light leakage phenomenon through a side surface of a display.

According to an aspect of the present invention, there is provided a media device comprising: a display configured to output time information; a light source disposed in a back direction of the display and configured to project light on the display; A light guide plate disposed between the display and the light source so as to uniformly distribute the light projected from the light source to the entire display; and a light guide plate for guiding light from one side of the display so as not to apply a deformation force to the display And a reflection pattern formed on one side of the main body so as to face one side of the display and processed to regularly reflect the incident light.

As an example related to the present invention, the media device further includes a frame supporting the display in contact with the backside of the display.

In one embodiment of the present invention, the frame includes a support member having one end abutting one end of the back surface, and a first member supporting the support member and having a light leakage preventing pad mounted on one surface thereof.

The first member may include a first extending surface contacting the one surface of the light guide plate and extending in the width direction of the light guide plate and configured to receive the light leakage preventing pad, And a second extended surface that is bent and extends in the thickness direction of the light guide plate and supports the support member.

In one embodiment of the present invention, the light leakage preventing pad is disposed such that one surface thereof is in contact with the first extending surface and the other surface is adjacent to the rear surface.

As an example related to the present invention, the display further includes a cap attached to the side surface, the cap protruding toward the reflection pattern, and the apex is formed to be deviated from the center of the cap.

As an example related to the present invention, the reflection pattern is formed by attaching a black thin film. The thin film may be deposited by a deposition process.

As one example related to the present invention, one side surface of the main body includes an attachment groove which is recessed so as to be deeper in the thickness direction of the display.

As an example related to the present invention, the reflection pattern is formed so as to cover one surface of the attachment groove.

According to at least one embodiment of the present invention configured as described above, the media device removes a light leakage preventing cushion pad disposed in close contact with the display side and the main body, and forms a small gap between the display and the side surface of the main body Thereby reducing stress applied to the display and forming a reflection pattern regularly reflecting light on the side surface of the main body, thereby preventing light from leaking. This can overcome the trade-off relationship between light leakage, which is a persistent defect of media devices, and light leakage.

In addition, since leakage of light can be prevented by forming a reflection pattern on the side surface of the main body without having to assemble a separate cushion pad, the manufacturing process can be simplified and the manufacturing cost of the apparatus can be reduced.

In addition, it is possible to prevent appearance of a cushion pad from being exposed to the outside.

1 is a front perspective view of a media device according to an embodiment of the present invention;
Figure 2 is a cross-sectional view of the media device of Figure 1;
3 is a conceptual diagram for preventing light leakage according to another embodiment of the present invention.
4 is a conceptual diagram for preventing light leakage according to another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the technical idea of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention, parts not related to the description are omitted, and like parts are denoted by similar reference numerals throughout the specification.

1 is a front perspective view of a media device 100 according to an embodiment of the present invention.

A media device (100) according to the present invention includes a main body (101) constituting an external appearance thereof. The casing (casing, housing, cover, etc.) constituting the appearance of the main body 101 may be formed by the front case 102 and the rear case 103. [ A variety of electronic components are embedded in the space formed between the front case 102 and the rear case 103.

The body 104 can be fixed on the ground by the support 109.

The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The display unit 230 may be disposed on the front case 102. The display unit 230 may be formed to occupy most of the main surface (front surface) of the media device 100.

The front case 102 may have a rectangular band shape having a predetermined width or may have a rectangular plate shape covering the entire surface of the display unit 230. In the former case, not only the front edge of the display unit 230 in which no image is output, but also the edge of the display unit 230 can be prevented from being damaged by an external force. In the latter case, the transparent plate material that transmits light may be a plastic panel formed by injection compression molding (injection compression molding) or a compression-strengthened glass. An opaque film layer or a coating layer may be formed on the edge of the front case so as to cover the edge portion of the display unit 230 in which no light is emitted.

The signal input / output unit 130, the audio output unit 180, or the interface unit 140 may be formed in the front case 102 or the rear case 103. The signal input / output unit 130, the audio output unit 180, or the interface unit 140 may be formed in plural numbers. At this time, either one of the plurality of signal input / output units 130, the audio output unit 180, or the interface unit 140 may be formed in the front case 102 and the other may be formed in the rear case 103 .

Then, the main body 101 may be provided with a photographing unit 139. The photographing unit 139 may be installed in the main body 101 to be able to rotate or pop-up. The photographing section 139 processes an image frame such as a still image or a moving image obtained by the image sensor in the image communication mode or photographing mode. The processed image frame can be displayed on the display unit 230. [ The processed image frame may be stored in the storage unit or transmitted to the outside through the signal input / output unit 130. [ The photographing unit 139 may be provided in two or more depending on the use environment.

Through the photographing unit 139, the user can acquire image information, and the photographing unit 139 can construct an image communication unit together with the microphone.

A user input unit 145 may be formed on one side of the main body 101. The user input unit 145 is operated to receive a command for controlling the operation of the media device 100, and may include a plurality of operation units. The operating units may also be referred to as manipulating portions and may be employed in any manner as long as the user is operating in a tactile manner with a tactile impression. Examples of such operating units include a power key, a channel key, a volume key, a setting key, and the like.

Figure 2 is a cross-sectional view of the media device of Figure 1;

Referring to FIG. 2, the media device includes a main body 101 including a casing forming an outer appearance, a frame disposed inside the main body 101, a display 230 supported by the frame, a light guide plate 220, A light source 210, a light leakage prevention pad 240, and the like.

The main body 101 includes a front case 102 and a rear case 103. Various electronic components are housed in a space formed between the front case 102 and the rear case 103. [

The frame supports the display 230 in contact with the back of the display 230. That is, according to one embodiment of the present invention, the display 230 is not attached to the side surface of the main body 101 but is supported by a frame disposed inside the main body 101. [ In such a structure, since the display 230 is not attached to the side surface of the main body 101, the bezel area can be reduced.

The frame may include a support member 340, a first member 330, a second member 310, a third member 320, and the like. The support member 340 is disposed so that one end thereof is in contact with the rear surface of the display 230. The support member 340 is preferably attached to one end of the display 230 so as not to interfere with the projection of light onto the display 230. The display 230 may be adhered to the support member 340 by a transparent adhesive tape 341.

The first member 330 is formed to support the support member 340. The first member 330 includes a first extending surface extending in the width direction of the media device and a second extending surface bent in one end of the first extending surface and extending in the thickness direction of the device.

The light leakage preventing pad 240 is attached to one surface of the first extended surface and one surface of the light guide plate 220 is abutted to the other surface of the first extended surface. The second extended surface abuts against the support member 340 to support the support member 340 so as not to be tilted.

One end of the second member 310 is in contact with the other surface of the light guide plate 220 to support the light guide plate 220. That is, the light guide plate 220 is fixed by the first member 330 and the second member 310. The other end of the second member 310 is connected to the first member 330 to fix the first member 330. The second member 310 can be coupled to the main body 101 by the fastening member 301. The fastening member 301 may be formed of a bolt, a nut, a screw, or the like, and is coupled to the second member 310 through a part of the main body 101.

The third member 320 fixes the first member 330 together with the second member 310. Referring to FIG. 2, the second member 310 and the third member 320 are fixed to contact with both surfaces of the first member 330, respectively, to maintain the fixed state of the first member 330. A fastening member 302 passing through the second member 310 and the third member 320 may be coupled so that the second member 310 and the third member 320 remain engaged.

In an embodiment of the present invention, the frame is separated into the first to third members 320 and the support member 340 as described above. However, in another embodiment, the frame may be configured with a smaller number of members. For example, the supporting member 340 and the first member 330 may be integrally formed, or the frame may be formed as a single member. In this case, the frame may include a body, a first extending portion serving as the supporting member 340, a second extending portion serving as the first member 330, and the like.

The light source 210 is disposed in the rear direction of the display 230 and projects light onto the display 230.

The light guide plate 220 is disposed between the display 230 and the light source 210. Although the light guide plate 220 is disposed apart from the display 230 according to the illustrated embodiment, the light guide plate 220 may be formed as one layer of the display 230 according to another embodiment.

The light guide plate 220 guides the light projected from the light source 210. The light guide plate 220 disperses light so that the light projected from the light source 210 is uniformly distributed over the display 230.

The light leakage prevention pad 240 is disposed adjacent to one end of the display 230. The light leakage preventing pad 240 is disposed so that one surface thereof is in contact with the first extended surface of the first member 330 and the other surface thereof is adjacent to the rear surface of the display 230. The other surface may be disposed closely to the display 230, but the other surface may be spaced apart from the display 230 with a small gap so as to reduce the stress applied to the display 230.

A reflection pattern 110 may be formed on the inner surface of the main body 101. The reflective pattern 110 is formed to face the side surface of the display 230. The reflective pattern 110 is formed of a black material having a high density to reduce the reflectance of light and to smoothly process the surface to reduce diffuse reflection and reduce surface roughness. That is, the outer surface of the reflection pattern 110 may have a mirror-like mirror surface so as to have a high reflectance. And the specular reflection is performed in the reflection pattern 110, thereby preventing light from being scattered at various angles by the diffused reflection.

According to an embodiment of the present invention, the reflection pattern 110 is formed to be slightly wider than the thickness of the display 230 (about 10 mm or so) and to form a thin film (about 0.1 mm or less).

The reflection pattern 110 may be formed by attaching a tape having a high concentration and a smoothness to the inner surface of the main body 101, and may be formed by a deposition process. That is, the reflection pattern 110 may be formed by heating or evaporating a metal or a compound in a vacuum state and coating the vapor with a thin film on the inner surface of the body 101.

3 and 4 are conceptual diagrams of the light leakage prevention of the present invention.

The display 230 is formed to convert a video signal, a data signal, an OSD signal, etc. processed by the controller into an RGB signal to generate a driving signal. The display 230 may include a plasma display panel (PDP), a liquid crystal display (LCD) 230, a thin film transistor liquid crystal display (TFT) LCD, an organic light emitting diode (OLED), a flexible display 230, a 3D display 230, and an electronic ink display 230 (e-ink display) And can be implemented in various forms. Also, the display 230 may be implemented as a touch screen and configured to perform the functions of an input device.

The display 230 includes a display 230 panel 231, a prism sheet 233, a diffusion sheet 234, and the like.

The light source 210 is formed to illuminate the panel 230 of the display 230. The light source 210 may be disposed on the back surface of the light guide plate 220 or may be disposed on the side surface of the light guide plate 220 so as to illuminate light between the reflective sheet (not shown) and the light guide plate 220. The light source 210 may be composed of a plurality of light emitting diodes that emit light, for example.

The reflective sheet is disposed on the back surface of the light guide plate 220 to reflect the light leaking to the lower portion of the light guide plate 220 to the light guide plate 220 to prevent light leakage. The surface of the reflective sheet facing the light guide plate 220 may have a mirror-like mirror surface so as to have a high reflectance.

The light guide plate 220 guides the movement of light so that the light reflected through the light source can be uniformly distributed over the display 230 area.

The diffusion sheet 234 is disposed on the upper side of the light guide plate 220 and is formed to diffuse light passing through the light guide plate 220. On the surface of the diffusion sheet 234, a predetermined pattern for efficiently diffusing light can be formed continuously.

The diffusion of light of the diffusion sheet 234 causes the light to be uniform, while the brightness of light may be lowered. The prism sheet 233 has a prism pattern to refract and condense light emitted from the diffusion sheet 234 to increase the brightness of light. A protective sheet 232 for protecting the prism sheet 233 and diffusing light having a narrow viewing angle by the prism sheet 233 may be disposed on the upper surface of the prism sheet 233. [

Display 230 The panel 231 has an area of the display 230 that is substantially image displayable and is configured to form an image on the display 230 area. The display panel 230 controls the image by selectively transmitting light using a shape in which the direction of the liquid crystal molecules changes when a voltage is applied to the liquid crystal.

The media device includes a cover (which may be referred to as a case, a housing, or the like) that accommodates various electronic components including the display 230 and forms a structure. The cover may be formed by injecting a synthetic resin, or may be formed of a metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

A cap 235 may be attached to the side of the display 230. The cap 235 may serve to protect the display 230 or to reinforce the side of the display 230.

Referring to FIG. 3, the cap 235 faces the reflection pattern 110 and protrudes toward the reflection pattern 110. The apex of the cap 235 is formed to deviate from the center of the cap 235. As shown, the cap 235 is not symmetrical up and down, and the slope of the upper side can be formed larger than the slope of the lower side A. Accordingly, it is possible to reduce the amount of light reflected on the reflection pattern 110 from being reflected to the upper side and being emitted to the outside.

Light leaking between the light leakage prevention pad 240 and the display 230 is absorbed or reflected by the reflection pattern 110. Most of the light reflected on the reflection pattern 110 is incident on the lower side A of the cap 235 and is reflected again toward the inside of the media device.

Referring to FIG. 4, on one side of the main body 101, an attachment groove 120 is formed to be recessed so as to be deeper in the thickness direction of the display 230. The thickness direction may include both the upward direction and the downward direction of the drawing, but it is preferable to designate the downward direction of the drawing according to the present embodiment. The attachment groove 120 can be filed in a saw-tooth shape.

A reflective pattern 110 may be formed on one side of the attachment groove 120 facing the side of the display 230. That is, the reflection pattern 110 is inclined along the inclination of the attachment groove 120 and the normal line is directed toward the inside of the apparatus.

The normal line of the surface of the reflection pattern 110 is formed so as to face the inside of the device, so that the incident angle of the light incident on the reflection pattern 110 can be made small. That is, the light leaking to the side of the display 230 after being illuminated on the display 230 by the light source 210 inside the device is incident on the reflection pattern 110 with a small incident angle. The amount of light leaking into the gap between the display 230 and the main body 101 after the reflection pattern 110 is reflected is reduced.

The media device configured as described above removes a light leakage preventing cushion pad disposed on the side surface of the display 230 and the main body 101 and removes a small gap between the display 230 and the side surface of the main body 101 Thereby reducing the stress applied to the display 230 and forming a reflection pattern 110 that regularly reflects light on the side surface of the main body 101 to prevent light from leaking. This can overcome the trade-off relationship between light leakage, which is a persistent defect of media devices, and light leakage.

Since the leakage of light can be prevented by forming the reflection pattern 110 on the side surface of the main body 101 without assembling a separate cushion pad, it is possible to simplify the manufacturing process and reduce the manufacturing cost of the device, It is possible to expect a remarkable effect compared to the technology.

The above-described media apparatus is not limited to the configurations and methods of the embodiments described above, but all or a part of the embodiments may be selectively combined so that various modifications may be made to the embodiments.

Claims

A display configured to output visual information;
A light source disposed in a back direction of the display and configured to project light on the display;
A light guide plate disposed between the display and the light source to uniformly distribute the light projected from the light source on the entire display;
A main body having one side spaced apart from one side of the display so as to form an appearance and not to apply strain to the display; And
And a reflection pattern formed on one side of the main body to face one side of the display and processed to regularly reflect the incident light.

The method according to claim 1,
Further comprising a frame supporting the display in contact with the backside of the display.

3. The method of claim 2,
The frame includes:
A support member having one end abutting one end of the back surface; And
And a first member supporting the support member and having a light leakage preventing pad mounted on one surface thereof.

The method of claim 3,
Wherein the first member comprises:
A first extension surface contacting the one surface of the light guide plate and extending in the width direction of the light guide plate and having the light leakage prevention pad seated thereon; And
And a second extending surface that is bent at one end of the first extending surface and extends in the thickness direction of the light guide plate and supports the supporting member.

5. The method of claim 4,
The light leakage prevention pad may include:
Wherein one surface is in contact with the first extended surface and the other surface is disposed adjacent to the back surface.

The method according to claim 1,
The display further comprises a cap attached to the side,
Wherein the cap is protruded toward the reflective pattern and the vertex is formed to be offset from the center of the cap.

The method according to claim 1,
The reflection pattern
And a black thin film is adhered thereto.

The method according to claim 1,
The reflection pattern
Wherein the thin film is a thin film formed by a deposition process.

The method according to claim 1,
One side surface of the main body,
And an attachment groove recessed to be deeper toward the thickness direction of the display.

10. The method of claim 9,
The reflection pattern
And the cover is formed to cover one side of the attachment groove.