JP2013137335A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device in which an area (that is, frame area) configured like a frame around an effective area (that is, effective area) where an image is actually displayed is made smaller (narrower).SOLUTION: An image display device includes a light guide plate having a first principal surface and a second principal surface, and having, on the second principal surface side, a first support part provided to be supported by a chassis. The image display device includes a second support part provided to be supported by the first support part of the light guide plate.

Description

  Embodiments described herein relate generally to a video display device.

  In recent years, video display devices using liquid crystals such as televisions (TVs) and personal computers (PCs) have become widespread.

  In these video display devices, it is desired to reduce (narrow) a region (frame area) configured like a frame around an effective region (effective area) where an image is actually displayed. ing.

  For this reason, it has been a problem to reduce the frame area of the video display device.

JP 2008-020749 A

  There has been a problem of reducing the frame area of the video display device.

  An image display device according to an embodiment includes a light guide plate that includes a first main surface and a second main surface, and includes a first support portion provided on the second main surface side so as to be supported by the chassis. Prepare.

  Moreover, the 2nd support part provided so that it may be supported with the said 1st support part of the said light-guide plate is provided.

The figure which shows the external appearance of the video display apparatus concerning embodiment. The block diagram which shows the structure of the video display apparatus concerning embodiment. The figure which shows the effective area and frame area of the video display apparatus concerning embodiment. The figure which shows the comparative example of the light-guide plate accommodated in the video display apparatus. The figure which shows the light-guide plate accommodated in the video display apparatus concerning embodiment. The figure which shows the light-guide plate accommodated in the video display apparatus concerning other embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating an appearance of a video display apparatus according to the embodiment.

  Here, a television is used as an example for explanation, but this embodiment can also be applied to a video display device such as a personal computer (PC) or a smartphone.

  In the video display device (television) 1, for example, a remote controller (remote controller) 21 is operated by a user.

  The remote control signal output from the remote controller 21 is received by the operation receiving unit 20 of the video display device (television) 1.

  The video display device (television) 1 that has received the remote control signal operates in accordance with an instruction of the remote control signal, and displays a predetermined screen on a display screen (video display unit) 8 constituted by, for example, an LCD (Liquid Crystal Display). The video of is displayed and output.

  The video display device (television) 1 includes an external storage device (HDD or the like) 19 that is externally attached via a USB terminal or the like, for example. For example, a broadcast received by the video display device 1 can be recorded in the external storage device 19.

  The video display device (television) 1 includes a battery (not shown) that is connected to or built in the video display device (television) 1.

  For example, the battery can be charged by receiving power from the commercial power source.

  In addition, the video display device (television) 1 according to this embodiment uses an LED (Light Emitting Diode) as a light source and includes a light guide plate.

  Here, the light guide plate will be described.

  The light guide plate is used for an edge light type backlight, for example. The edge light method is also called a side light method or a light guide plate method.

  The edge light system is used not only for televisions but also for small liquid crystals, notebook computers, LCD monitors, and the like.

  A light guide plate (LGP) is, for example, a plate that diffuses light entered from a side surface and emits uniform light on the surface.

  By using this light guide plate on the back side of the display panel (liquid crystal etc.) of the video display device (TV) 1, for example, a thin and uniform display panel (liquid crystal etc.) can be manufactured without inserting a fluorescent lamp on the back side. It becomes possible to do.

  The light guide plate is configured in a plate shape as described above, and includes a first main surface and a second main surface.

  For example, as shown in FIG. 1, the first main surface is a surface facing the user 100 via, for example, a liquid crystal. The second main surface is a surface that does not face the user 100. That is, when the first main surface is the front, the second main surface is the back surface.

  The light guide plate receives the light output from the LED, diffuses the received light, and outputs the light to the first main surface.

  In addition, the light guide plate includes a plurality of types derived from the manufacturing method, such as a silk printing method, a V-groove cutting method, a molding method, and a laser method.

  The silk printing method is a method of printing a dot pattern on the surface of the light guide plate, for example. This method requires initial cost, but is characterized by high brightness, low cost, and suitable for mass production.

  Further, the V-groove cutting method is a method in which grooves are cut on the surface of the light guide plate with a plotter, for example. This method may vary in quality and is mainly suitable for large products.

  Moreover, a shaping | molding system is a system which pours acrylic into a mold material and shape | molds a light-guide plate, for example. This method requires a mold cost, but can be applied to both small products and large products. And it is suitable for mass production.

  The laser method is a method of scratching the surface of the light guide plate with a laser wave, for example. This method can be applied even with a small lot. When a light guide plate is produced by this method, it is easy to emit light uniformly and is suitable for small products.

  And in this embodiment, a light-guide plate is shape | molded using the said shaping | molding system, for example.

  FIG. 2 is a block diagram illustrating a configuration of the video display apparatus according to the embodiment.

  In this embodiment, the control unit 11 includes a CPU (12). The CPU (12) controls the video display device (television) 1.

  The RAM (13), the ROM (14), and the flash memory 15 are used for processing performed by the control unit 11, for example.

  For example, video content is broadcast from the broadcasting station 25 by digital broadcasting. The digital broadcast broadcast from the broadcast station 25 is received by the tuner 3, the channel selection process is performed, and the video content of the digital signal is transmitted to the signal processing unit 4.

  The video content of the digital signal received by the signal processing unit 4 is subjected to signal processing and transmitted to the audio processing unit 6 and the video processing unit 5.

  The audio processing unit 6 receives the video content that has been subjected to the signal processing, and transmits the signal that has been subjected to the audio processing to the speaker 9.

  The speaker 9 receives a signal that has been subjected to sound processing and outputs sound.

  In addition, the video processing unit 5 receives video content that has undergone signal processing, and transmits a signal that has undergone video processing to the display device 7.

  The display device 7 receives the video-processed signal and displays the video on a display screen (video display unit) 8 composed of an LCD panel or the like.

  In this embodiment, the video display device (television) 1 includes an internal storage device 17. Similarly to the external recording device 19, the internal storage device 17 is, for example, video content (video) transmitted from another video display device (partner) 101 and received by the video display device (TV) 1. And audio) can be recorded. The internal storage device 17 can record the received video content.

  In this embodiment, the video display device (television) 1 includes the external storage device 19 connected via USB or LAN as described above. The received video content can be recorded in the external storage device 19.

  Further, as described above, a user operation on the video display device (television) 1 is instructed by an operation device such as a remote controller (remote controller) 21, for example.

  These processes are controlled by the control unit 11 as described above.

  The video display device (TV) 1 is connected to a server 27 via a transmission / reception unit (network interface) 22 and a network (Internet) 26, and uses power reception information of the video display device (TV) 1 described below. For example, according to an instruction from the CPU (12), it is possible to acquire the scheduled power outage information of the video display device (television) 1 via the network (Internet) 26.

  FIG. 3 is a diagram illustrating an effective area and a frame area of the video display apparatus according to the embodiment.

  FIG. 3A is a view of the front of the video display device 1 as viewed from the user 100, for example, as shown in FIG.

  FIG. 3B shows the entire frame area 31 here.

  As shown in FIG. 3A, the user 100 faces the video display device 1 and views the video displayed on the display screen (effective area) 8 thereof.

  As described above, the light guide plate 41 is used on the back surface of the display panel (liquid crystal or the like) of the video display device (television) 1, but is not particularly shown here.

  The light guide plate 41 is housed inside the video display device 1. As shown in FIG. 3A, a part of the frame overlaps with the frame area 31 and is hidden from the user 100, so that the display of the video using a display panel (liquid crystal or the like) is practical. It is not served much.

  FIG. 4 is a diagram illustrating a comparative example of the light guide plate accommodated in the video display device.

  The user 100 faces the video display device 1 and views the video displayed on the display screen (effective area) 8 thereof.

  As shown in FIGS. 4A and 4B, the light guide plate 41 is accommodated in a back chassis (back bezel) 45.

  At this time, in this example, for example, a cutting process is performed on a peripheral area other than the screen effective area 50 of the light guide plate 41 cut out from the flat plate, and, for example, as shown in FIG. Notch) is provided.

  Further, the back chassis (back bezel) 45 has a plurality of pins (pin 42a, pin 42b, pin 42c, pin 42d shown in FIGS. 4 (a) and 4 (b) so as to correspond to the notches. , Pins 42e) are provided.

  Here, FIG.4 (b) is a figure which shows the AA cross section of Fig.4 (a).

  The plurality of notches and the plurality of pins are fixed, and the light guide plate 41 is fixed to a back chassis (back bezel) 45.

  The light guide plate 41 receives light output from a plurality of LEDs (LED 44a, LED 44b, LED 44c, LED 44d, LED 44e) from the side surface, diffuses the light, and emits uniform light on the surface.

  At this time, in this example, the plurality of notches and the plurality of pins are fixed in a peripheral area other than the screen effective area 50, and the light guide plate 41 is fixed to the back chassis (back bezel) 45. Therefore, the frame area 31 is as shown in FIG.

  FIG. 5 is a diagram illustrating a light guide plate accommodated in the video display apparatus according to the embodiment.

  In this embodiment, the light guide plate 41 is molded by using, for example, a molding method (injection method) as described above.

  And as shown to Fig.5 (a), FIG.5 (b), FIG.5 (c), the light-guide plate 41 is a board, 2nd main surfaces, ie, the 1st which opposes a user as mentioned above. 1 main surface 51 and a second main surface 52 not facing the user.

  In addition, here, the back chassis (back bezel) 45 accommodates the light guide plate 41 as described above, and a plurality of chassis fittings that fits (or does not necessarily support) the light guide plate 41. Part (second support part) (45a, 45b, 45c, 45d).

  Here, the chassis fitting portion (second support portion) (45a, 45b, 45c, 45d) is exemplified as being provided in the back chassis (back bezel) 45, but these are separate members, for example. You may comprise as formed.

  Here, the chassis fitting portion (second support portion) (45a, 45b, 45c, 45d) includes a convex portion.

  Further, the second main surface 52 of the light guide plate 41 is formed integrally with the second main surface 52 by using a molding method (injection method) as described above, for example, and the plurality of chassis. A light guide plate fitting portion (first support portion) (a second support portion) (45a, 45b, 45c, 45d) is fitted (or supported without necessarily fitting), respectively. 41a, 41b, 41c, 41d).

  The light guide plate fitting portion (first support portion) (41a, 41b, 41c, 41d) includes a recess.

  Here, the light guide plate fitting portion (first support portion) (41a, 41b, 41c, 41d) is, for example, a screen effective area 50 (two-dot chain line) that is a substantial effective region as described above. Formed inside.

  Here, for example, four light guide plate fitting portions (first support portions) (41a, 41b, 41c, 41d) are provided in the vicinity of the end portion in the substantial screen effective area 50 (two-dot chain line). It has been. In addition, here, these light guide plate fitting portions (first support portions) (41a, 41b, 41c, 41d) are respectively formed at the corners of the screen effective area 50 (two-dot chain line).

  Further, as described above, the plurality of chassis fitting portions (second support portions) (45a, 45b, 45c, 45d) are connected to the light guide plate fitting portions (first support portions) (41a, 41b). , 41c, 41d) to be fitted (or not necessarily fitted).

  FIG.5 (b) is a figure which shows the AA cross section of Fig.5 (a).

  As can be seen from FIG. 5B, the light guide plate 41 is accommodated in the back chassis (back bezel) 45.

  As described above, the plurality of light guide plate fitting portions (first support portions) (41a, 41b, 41c, 41d) are provided on the second main surface 52 of the light guide plate 41, for example. Yes.

  The back chassis (back bezel) 45 is provided with the plurality of chassis fitting portions (second support portions) (45a, 45b, 45c, 45d). 2 support portions) (45a, 45b, 45c, 45d), respectively (or supported without necessarily fitting).

  FIG. 5C is a view showing the first main surface 51 and the second main surface 52 of the light guide plate 41.

  As described above, the first main surface 51 is configured to face the user 100 via a liquid crystal or the like, for example. The second main surface 52 is a back surface with respect to the first main surface 51 and is provided so as not to face the user 100.

  5A and 5B, light output from a plurality of LEDs (LED 44a, LED 44b, LED 44c, LED 44d, LED 44e) is input from the side surface of the light guide plate 41.

  In the light guide plate 41, similarly to the above, light output from a plurality of LEDs (LED 44a, LED 44b, LED 44c, LED 44d, LED 44e, LED 44f, LED 44g) is input from the side surface, and the input light is diffused. A substantially uniform light is output to the surface of the first main surface 51.

  Similarly to the above, the user 100 faces the video display device 1 and views the video displayed on the display screen (effective area) 8 thereof.

  Here, the frame area 31 in this embodiment is compared with the example shown in FIG.

  That is, in this embodiment, it is not necessary to consider the positions of the plurality of notches and the plurality of pins as in the example of FIG. 4, for example, so that the frame area 31 can be reduced.

  FIG. 6 is a diagram illustrating a light guide plate housed in a video display apparatus according to another embodiment.

  Also in this embodiment, the light guide plate 41 is molded using, for example, a molding method (injection method).

  As shown in FIG. 6A, FIG. 6B, and FIG. 6C, the light guide plate 41 is a plate and has two main surfaces, that is, the first facing the user as described above. A main surface 51 and a second main surface 52 not facing the user are provided.

  In this embodiment, the light guide plate fitting portion (first support portion) (41a, 41b, 41c, 41d) is provided with a convex portion compared to the example shown in FIG. The second support portion (45a, 45b, 45c, 45d) includes a recess.

  Also here, similarly to the above, the back chassis (back bezel) 45 accommodates the light guide plate 41 and fits (or supports without necessarily fitting) the light guide plate 41 as described above. A plurality of chassis fitting portions (second support portions) (45a, 45b, 45c, 45d) are provided.

  Further, the second main surface 52 of the light guide plate 41 is formed integrally with the second main surface 52 by using a molding method (injection method) as described above, for example, and the plurality of chassis. A light guide plate fitting portion (first support portion) (a second support portion) (45a, 45b, 45c, 45d) is fitted (or supported without necessarily fitting), respectively. 41a, 41b, 41c, 41d).

  Here, the light guide plate fitting portion (first support portion) (41a, 41b, 41c, 41d) is a substantial effective area exposed to the user 100 as described above, for example. It is formed in the screen effective area 50 (two-dot chain line).

  Here, similarly to the above, the light guide plate fitting portions (first support portions) (41a, 41b, 41c, 41d) are, for example, end portions within the substantial screen effective area 50 (two-dot chain line). Four are provided in the vicinity. Also here, these light guide plate fitting portions (first support portions) (41a, 41b, 41c, 41d) are respectively formed at the corners of the screen effective area 50 (two-dot chain line).

  Further, as described above, the plurality of chassis fitting portions (second support portions) (45a, 45b, 45c, 45d) are connected to the light guide plate fitting portions (first support portions) (41a, 41b). , 41c, 41d) to be fitted (or not necessarily fitted).

  FIG.6 (b) is a figure which shows the AA cross section of Fig.6 (a).

  As can be seen from FIG. 6B, the light guide plate 41 is accommodated in the back chassis (back bezel) 45.

  As described above, the plurality of light guide plate fitting portions (first support portions) (41a, 41b, 41c, 41d) are provided on the second main surface 52 of the light guide plate 41, for example. Yes.

  The back chassis (back bezel) 45 is provided with the plurality of chassis fitting portions (second support portions) (45a, 45b, 45c, 45d). 2 support portions) (45a, 45b, 45c, 45d), respectively (or supported without necessarily fitting).

  FIG. 6C is a view showing the first main surface 51 and the second main surface 52 of the light guide plate 41.

  As described above, the first main surface 51 is configured to face the user 100 via a liquid crystal or the like, for example. The second main surface 52 is a back surface with respect to the first main surface 51 and is provided so as not to face the user 100.

  6A and 6B, light output from the plurality of LEDs (LED 44a, LED 44b, LED 44c, LED 44d, and LED 44e) is input from the side surface of the light guide plate 41.

  In the light guide plate 41, similarly to the above, light output from a plurality of LEDs (LED 44a, LED 44b, LED 44c, LED 44d, LED 44e, LED 44f, LED 44g) is input from the side surface, and the input light is diffused. A substantially uniform light is output to the surface of the first main surface 51.

  Similarly to the above, the user 100 faces the video display device 1 and views the video displayed on the display screen (effective area) 8 thereof.

  Here, the frame area 31 in this embodiment is compared with the example shown in FIG.

  That is, in this embodiment, it is not necessary to consider the positions of the plurality of notches and the plurality of pins as in the example of FIG. 4, for example, so that the frame area 31 can be reduced.

  As described above, in this embodiment, the light guide plate 41 includes the first main surface 51 facing the user and the second main surface not facing the user. Then, for example, the light received from the light source such as an LED is diffused and the light is output to the first main surface 51.

  The chassis 45 accommodates the light guide plate 41. The chassis 45 is fitted to (or supported by, not necessarily fitted) part of the light guide plate 41 (light guide plate fitting portion (first support portion) 41a).

  The light guide plate fitting portion (first support portion) 41a is formed integrally with the second main surface of the light guide plate 41, for example, and is fitted with the chassis fitting portion (second support portion) 45a. (Or even if not necessarily fitted).

  Further, the first main surface 51 of the light guide plate 41 includes an effective area (screen effective area 50) as described above. And the said light-guide plate fitting part (1st support part) 41a is provided in the said 2nd main surface 52 of the back surface of the effective area of the said 1st main surface 51, for example.

  The light guide plate fitting portion (first support portion) 41a and the chassis fitting portion (second support portion) 45a are provided in a plurality (for example, four, etc.).

  In one example, the light guide plate fitting portion (first support portion) 41a includes a concave portion, and the chassis fitting portion (second support portion) 45a includes a convex portion, and the concave portion and the convex portion. May be fitted (or supported without necessarily fitting).

  In another example, the light guide plate fitting portion (first support portion) 41a includes a convex portion, and the chassis fitting portion (second support portion) 45a includes a concave portion, and the convex portion and the concave portion are provided. May be fitted (or supported without necessarily fitting).

  The video display device 1 includes a plurality of LEDs (LED 44a, LED 44b, LED 44c, LED 44d, and LED 44e), and the light guide plate 41 receives light output from the plurality of LEDs.

  The first main surface 51 of the light guide plate 41 is a surface facing the user.

  The light guide plate fitting portion (first support portion) 41 a may be provided in the vicinity of a substantial end of the effective area of the light guide plate 41.

  In addition, the video display device 1 includes, for example, a tuner unit 3 that receives a broadcast, and outputs the received broadcast video to the first main surface 51 of the light guide plate 41.

  By configuring as described above, in this embodiment, the frame area in the video display device 1 can be reduced.

  The light guide plate fitting portion (first support portion) 41a is configured as described above. For example, the chassis fitting portion (second support portion) 45a is replaced with a heat sink, and the light guide plate is formed using this heat sink. It is also possible to fix the fitting part (first support part) 41a.

  Note that the above embodiment is not limited to the description itself, and in the implementation stage, the constituent elements can be variously modified and embodied without departing from the spirit of the invention.

  Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment.

  For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Video display apparatus (television), 8 ... Display screen, 20 ... Reception part, 21 ... Remote control (remote controller). DESCRIPTION OF SYMBOLS 30 ... Light guide plate, 41 ... Light guide plate, 41a ... Light guide plate fitting part (1st support part), 41b ... Light guide plate fitting part (1st support part), 41c ... Light guide plate fitting part (1st Support part), 41d ... light guide plate fitting part (first support part), 43 ... LED substrate, 44 ... LED, 45 ... chassis, 45a ... chassis fitting part (second support part), 45b ... chassis Fitting portion (second support portion), 45c... Chassis fitting portion (second support portion), 45d... Chassis fitting portion (second support portion).

Claims (9)

A light guide plate including a first main surface and a second main surface, and a first support portion provided on the second main surface side so as to be supported by the chassis;
An image display device that accommodates the chassis including a second support portion provided to be supported by the first support portion of the light guide plate.   The said 1st main surface of the said light-guide plate is provided with an effective area, and the said 1st support part is provided in the said 2nd main surface of the back surface of the effective area of the said 1st main surface. Video display device.   The video display device according to claim 1, wherein a plurality of the first support part and the second support part are provided.   The video display device according to claim 1, wherein the first support portion includes a concave portion, the second support portion includes a convex portion, and the concave portion and the convex portion are supported.   The video display device according to claim 1, wherein the first support portion includes a convex portion, the second support portion includes a concave portion, and the convex portion and the concave portion are supported.   The video display device according to claim 1, further comprising a light source, wherein the light output from the light source is received.   The video display device according to claim 1, wherein the first main surface is a surface facing a user.   The video display device according to claim 2, wherein the first support portion is provided in the vicinity of a substantial end portion of an effective area of the light guide plate.   The video display device according to claim 1, further comprising: a tuner unit that receives a broadcast, wherein the received broadcast video is output to a first main surface of the light guide plate.

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