Patent Grant
8988629
1. Field of the Invention
The present invention relates to the field of displaying techniques, and in particular to a flat panel display device, a stereoscopic display device, and a plasma display device.
2. The Related Arts
The state-of-the-art liquid crystal display device comprises a front bezel, a panel, and a backlight module, of which the backlight module comprises a back frame, a reflector plate, a light guide, and a lighting assembly.
Currently, a variety of display panels of different sizes are available in the market to meet different needs of general consumers. For example, in the field of television set, the sizes of liquid crystal panels include 31.5, 42, 46, 48, and 55 inches. Different back frame molds are provided for liquid crystal planes of different sizes.
Referring to
The technical issue to be addressed by the present invention is to provide a flat panel display device, a stereoscopic display device, and a plasma display device, which lower down material cost and mold cost, ensure that the strength of a back frame meets the desired requirements, and also overcome the problem that a circuit board cannot be easily fixed.
To address the above technical issue, the present invention adopts a technical solution that provides flat panel display device, which comprises a backlight system and a display panel; the backlight system comprises a light source, a light homogenization mechanism, and a back frame; the back frame carries the light source and the light homogenization mechanism, the light homogenization mechanism guiding light from the light source into the display panel; the back frame comprises primary assembling pieces, secondary assembling pieces, and a bracing piece for fixing a circuit board, the primary assembling pieces having a number of at least two, at least one of the primary assembling pieces having an end forming joint sections, the secondary assembling pieces being joined to the primary assembling pieces; the at least two primary assembling pieces are joined through corresponding joint sections thereof, at least one of the primary assembling pieces comprising a reinforcement structure formed on the joint sections thereof; and the bracing piece comprises a bracing body, a first suspension section, a first bearing section, and a first resilient bent section, the bracing body being mounted to the primary assembling pieces or the secondary assembling pieces or is mounted to both the primary assembling pieces and the secondary assembling pieces, the first suspension section extending from the bracing body toward one side of the bracing body, the first bearing section being spaced from the bracing body and extending from the first suspension section toward one side of the first suspension section, the first resilient bent section being located between the first bearing section and the bracing body and being bent from the first suspension section toward one side of the first suspension section, the first bearing section and the first resilient bent section resiliently clamping a first side edge of the circuit board.
According to a preferred embodiment of the present invention, each of the primary assembling pieces has a cross-section of the joint section that has a line-folded configuration in order to form the reinforcement structure, the line-folded configuration comprising at least two joined line segments, the reinforcement structures of the two primary assembling pieces being stacked in a recess-projection paired form.
According to a preferred embodiment of the present invention, the line-folded configuration of the reinforcement structure comprises a rectangle, a trapezoidal, a swallow-tailed shape, a T-shape, an inverted T-shape, a conic shape, a cruciform shape, a fork-like shape, or a grating shape.
According to a preferred embodiment of the present invention, each of the primary assembling pieces has a cross-section of the joint section that is an arc shape to form the reinforcement structure, the reinforcement structures of the two primary assembling pieces being stacked in a recess-projection paired form.
According to a preferred embodiment of the present invention, the arc shape of the reinforcement structure comprises one or more groups of single curvature, dual curvatures, or multiple curvatures.
According to a preferred embodiment of the present invention, the bracing piece further comprises a second suspension section, a second bearing section, and a second resilient bent section, the second suspension section being spaced from the first suspension section and extending from the bracing body toward one side of the bracing body, the second bearing section being spaced from the bracing body and extending from the second suspension section toward one side of the second suspension section, the second resilient bent section being located between the second bearing section and the bracing body and extending from the second suspension toward one side of the second suspension section, the second bearing section and the second resilient bent section resiliently clamping a second side edge of the circuit board that is opposite to the first side edge.
According to a preferred embodiment of the present invention, the back frame comprises two bracing pieces and the two bracing pieces are spaced from each other to clamp different locations of the first side edge and the second side edge of the circuit board.
According to a preferred embodiment of the present invention, the bracing body is of a step-like configuration and bridges between the two assembling pieces.
According to a preferred embodiment of the present invention, the at least two primary assembling pieces comprise a first primary assembling piece and a second primary assembling piece, the first primary assembling piece having an end forming at least joint sections that are arranged to space from each other in a lengthwise direction of the first primary assembling piece, each of the joint sections having a structure mating an end of the second primary assembling piece, the first primary assembling piece using one of the joint sections to join the corresponding end of the second primary assembling piece.
According to a preferred embodiment of the present invention, the joint sections comprise recesses formed in a surface of the first primary assembling piece and having a shape corresponding to the end of the second primary assembling piece for receiving the end of the second primary assembling piece.
According to a preferred embodiment of the present invention, the joint sections comprise recesses formed in the surface of the first primary assembling piece, the second primary assembling piece having a surface forming protrusions at corresponding positions that are arranged to space from each other in a lengthwise direction of the second primary assembling piece, the protrusions being receivable in the recesses to join the first primary assembling piece and the second primary assembling piece to each other.
According to a preferred embodiment of the present invention, the recess of the first primary assembling piece forms a first through hole in a bottom thereof, a second through hole being formed in the second primary assembling piece at a corresponding position, the back frame comprising a fastener, the fastener extending through the first through hole and the second through hole to joint the first primary assembling piece and the second primary assembling piece.
According to a preferred embodiment of the present invention, the back frame comprises a third primary assembling piece and a fourth primary assembling piece; and the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, and the fourth primary assembling piece are straight linear and are joined in a leading end-to-tailing end manner to circumferentially form a rectangular main frame structure of the back frame.
According to a preferred embodiment of the present invention, the secondary assembling pieces comprise a first secondary assembling piece and a second secondary assembling piece, the first secondary assembling piece having two ends respectively joined to at least two primary assembling pieces of the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, and the fourth primary assembling piece, the second secondary assembling piece having two ends respectively joined to at least two primary assembling pieces of the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, and the fourth primary assembling piece.
According to a preferred embodiment of the present invention, the two ends of the first secondary assembling piece are respectively joined to the first primary assembling piece and the second primary assembling piece that are adjacent to each other and the two ends of the second secondary assembling piece are respectively joined to the third primary assembling piece and the fourth primary assembling piece that are adjacent to each other; or the two ends of the first secondary assembling piece are respectively joined to the first primary assembling piece and the third primary assembling piece that are opposite to each other and the two ends of the second secondary assembling piece are respectively joined to the first primary assembling piece and the third primary assembling piece that are opposite to each other, the second primary assembling piece, the fourth primary assembling piece, the first secondary assembling piece, and the second secondary assembling piece being arranged parallel to each other.
According to a preferred embodiment of the present invention, the flat panel display device comprises a touch screen and the touch screen is positioned on a light exit surface of the display panel.
To address the above technical issue, the present invention adopts a technical solution that provides a stereoscopic display device. The stereoscopic display device comprises a liquid crystal lens grating, a backlight system, and a display panel, the liquid crystal lens grating being arranged on a light exit surface of the display panel; the backlight system comprises a light source, a light homogenization mechanism, and a back frame; the back frame carries the light source and the light homogenization mechanism, the light homogenization mechanism guiding light from the light source to a light incidence surface of the display panel; the back frame comprises primary assembling pieces and a bracing piece for fixing a circuit board, the primary assembling pieces having a number of at least two, at least one of the primary assembling pieces having an end forming joint sections; the at least two primary assembling pieces are joined through corresponding joint sections thereof, at least one of the primary assembling pieces comprising a reinforcement structure formed on the joint sections thereof; and the bracing piece comprises a bracing body, a first suspension section, a first bearing section, and a first resilient bent section, the bracing body being mounted to the primary assembling pieces or the secondary assembling pieces or is mounted to both the primary assembling pieces and the secondary assembling pieces, the first suspension section extending from the bracing body toward one side of the bracing body, the first bearing section being spaced from the bracing body and extending from the first suspension section toward one side of the first suspension section, the first resilient bent section being located between the first bearing section and the bracing body and being bent from the first suspension section toward one side of the first suspension section, the first bearing section and the first resilient bent section resiliently clamping a first side edge of the circuit board.
To address the above technical issue, the present invention adopts a technical solution that provides a plasma display device, which comprises a plasma display panel and a back frame, the back frame being arranged at a back side of the plasma display panel; the back frame comprises primary assembling pieces and a bracing piece for fixing a circuit board, the primary assembling pieces having a number of at least two, at least one of the primary assembling pieces having an end forming joint sections; the at least two primary assembling pieces are joined through corresponding joint sections thereof, at least one of the primary assembling pieces comprising a reinforcement structure formed on the joint sections thereof; and the bracing piece comprises a bracing body, a first suspension section, a first bearing section, and a first resilient bent section, the bracing body being mounted to the primary assembling pieces or the secondary assembling pieces or is mounted to both the primary assembling pieces and the secondary assembling pieces, the first suspension section extending from the bracing body toward one side of the bracing body, the first bearing section being spaced from the bracing body and extending from the first suspension section toward one side of the first suspension section, the first resilient bent section being located between the first bearing section and the bracing body and being bent from the first suspension section toward one side of the first suspension section, the first bearing section and the first resilient bent section resiliently clamping a first side edge of the circuit board.
The efficacy of the present invention is that to be distinguished from the state of the art, the present invention provides a flat panel display device, a stereoscopic display device, and a plasma display device that use at least two primary assembling pieces of which a first primary assembling piece forms at least two joint sections and the first primary assembling piece uses one of the joint sections to join a corresponding end of a second primary assembling piece so as to make a mold for back frame simple in structure, reduce the expenditure of the back frame mold, save the material used for back frame, and thus lower down the cost of flat panel display device. Further, through the arrangement of a reinforcement structure on a joining section of a primary assembling piece, the strength of the back frame at the joining site can be improved to thereby ensure the overall strength of the back frame meets the desired requirements. With a bracing piece being mounted to the back frame to fix a circuit board, the problem that the circuit board cannot be easily fixed is overcome.
Referring to
In the instant embodiment, the backlight system 21 comprises a light source 25, a light homogenization mechanism 24, and a back frame 23. The back frame 23 carries the light source 25 and the light homogenization mechanism 24. When the backlight system 21 is an edge lighting type, the light homogenization mechanism 24 is a light guide; and when the backlight system 21 is a direct type, the light homogenization mechanism 24 is a diffuser plate. The back frame 23 comprises at least a first primary assembling piece and a second primary assembling piece, and the two of at least first and second primary assembling pieces constitute a main frame structure 27 of the back frame 23.
Referring also to
Referring also to
In the instant embodiment, the first primary assembling piece 281 is L-shaped, and the second and third primary assembling pieces 282, 283 are straight linear.
Further, the back frame 23 further comprises secondary assembling pieces arranged inside and joined to the main frame structure 27.
A detailed description will be given to the back frame 23 of the flat panel display device 20 according to the present invention, which comprises four primary assembling pieces and two secondary assembling pieces.
Referring to
Specifically, an end of the first primary assembling piece 231 is joined to an end of the second primary assembling piece 232, another end of the second primary assembling piece 232 is joined to an end of the third primary assembling piece 233, another end of the third primary assembling piece 233 is joined to an end of the fourth primary assembling piece 234, and another end of the fourth primary assembling piece 234 is joined to another end of the first primary assembling piece 231 in order to form the rectangular main frame structure 27. The first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 are all aluminum pieces or galvanized steel pieces. In the instant embodiment, the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 are straight linear, yet in other embodiments, it is apparent to those skilled in the art to make all the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 L-shaped, or some being straight linear and the remaining being L-shaped. For example, in
Referring to
Referring to
Referring to
In the instant embodiment, the back frame 23 comprises seven bracing pieces 2371, 2372, 2373, 2374, 2375, 2376, and 2377. The bracing piece 2371 is fixed to the fourth primary assembling piece 234; the bracing pieces 2372, 2373 are both fixed to the first secondary assembling piece 235; the bracing piece 2374 is fixed to the second secondary assembling piece 236; the bracing piece 2375 is fixed to the second primary assembling piece 232; and the bracing pieces 2376, 2377 are each fixed, at two ends thereof, to the first secondary assembling piece 235 and the second secondary assembling piece 236. In practice, the bracing pieces can be fixed to one or more of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, the fourth primary assembling piece 234, the first secondary assembling piece 235, and the second secondary assembling piece 236. In other embodiments, those skilled in the art may mount bracing pieces of any other numbers to the back frame 23, such as one or more bracing pieces. Further, the bracing pieces can be releasably fixed to one or more of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, the fourth primary assembling piece 234, the first secondary assembling piece 235, and the second secondary assembling piece 236.
The bracing pieces 2371, 2372, 2373, 2374, 2375, 2376, and 2377 may be provided with bumps (not labeled) so that the back frame 23 may fix components, such as circuit boards, with such bumps.
Molds for making the back frame 23 will be described. In the instant embodiment, the first primary assembling piece 231 and the third primary assembling piece 233 are of the same size and shape so that they can be made by stamping with the same mold. The second primary assembling piece 232, the fourth primary assembling piece 234, the first secondary assembling piece 235, and the second secondary assembling piece 236 are of the same size and shape so that they can be made by stamping with the same mold, making it possible to share the mold. Thus, the back frame 23 of the present invention can be made by stamping with only two small-sized molds, and compared to the conventional back frame 10 that requires a large-sized mold, the molds for making the back frame 23 of the present invention are simple in structure and small in size and thus the cost of mold for the back frame 23 can be lowered. Further, compared to the whole back frame structure of the conventional back frame 10, the back frame 23 of the present invention can significantly save material used and thus reduce the manufacturing cost of the flat panel display device 20.
Referring to
Specifically, the first primary assembling piece 231 has an end having a surface forming joint sections 2311, 2312, and the joint sections 2311, 2312 are arranged in a spaced manner in a lengthwise direction of the first primary assembling piece 231. The joint sections 2311, 2312 are formed by forming recesses having a shape mating an end of the second primary assembling piece 232 in the first primary assembling piece 231 in order to receive the end of the second primary assembling piece 232 therein.
Referring to
To assemble a large-sized back frame 23, the joint section 2311 that is close to the very end of the first primary assembling piece 231 is first taken and a second primary assembling piece 232 having a corresponding width is selected. Afterwards, an end of the second primary assembling piece 232 is positioned in the recess of the joint section 2311. And then, means, such as screwing, fastening, or welding, is applied to join and fix the end of the second primary assembling piece 232 to the joint section 2311. To assemble a small-sized back frame 23, the joint section 2312 that is distant from the very end of the first primary assembling piece 231 is first chosen and a second primary assembling piece 232 having a corresponding width is selected. Afterwards, an end of the second primary assembling piece 232 is positioned in the recess of the joint section 2312. And then, means, such as screwing, fastening, or welding, is applied to join and fix the end of the second primary assembling piece 232 to the joint section 2312.
Referring to
Furthermore, as shown in
Further, as shown in
As shown in
As shown in
In a practical application, the other end of the first primary assembling piece 231 and both ends of the third primary assembling piece 233 are all provided with two joint sections having a structure identical to that of the joint sections 2311, 2312. The ends of the second primary assembling piece 232 and the ends of the fourth primary assembling piece 234 may be subjected to specific designs or no design at all according to different applications. For example:
(1) In a first situation, as shown in
(2) In a second situation, it is similar to the first situation, but as shown in
This also applicable to an embodiment of the main frame structure 27 of the back frame 23 that is formed by only joining two L-shaped primary assembling pieces.
In summary, the present invention provides a back frame 23 having a first primary assembling piece that is provided with at least two joint sections. The number of the joint section can be selected according to the requirement of customers. In the instant embodiment, a description is given to an example comprising two joint sections 2311, 2312. Thus, to prepare the molds for making the back frame 23, only two sets of mold are needed, namely one mold for a first primary assembling piece and the other mold for a second primary assembling piece. The first primary assembling piece may be provided with a plurality of joint sections for joining operation in order to form various sizes for the back frame 23. To assemble the back frame 23, based on the desired size of the back frame 23, the corresponding one of the joint sections is selected. With the joint section, the second primary assembling piece is joined to the joint section of the first primary assembling piece and the other joint section of the first primary assembling piece that is located outward of the joining location of the second primary assembling piece is trimmed off to obtain a desired size of the back frame 23. Compared to the conventional technology that requires different back frame molds for making different sizes of back frame 10, the back frame of the flat panel display device 23 according to the present invention requires only a mold for the first primary assembling piece and a mold for the second primary assembling piece 28 so that mold sharing among various sizes of product can be realized and the molds used are of simple structures, allowing of reduction of expenditure of the molds for back frames.
The present invention also provides a mold for making a back frame of flat panel display device. The back frame mold is provided with a main pattern for forming a primary assembling piece of the back frame and the main pattern comprises a sub-pattern that forms at least two joint sections on an end of the primary assembling piece. The primary assembling piece comprises the previously discussed first primary assembling piece and second primary assembling piece, corresponding to the above mentioned main pattern; and the joint section comprises the previously discussed joint section of the first primary assembling piece, corresponding to the above mentioned sub-pattern. Repeated description is omitted herein.
In the following, both the joint section 2611 and the joint section 2612 comprising a reinforcement structure will be taken as an example for illustration.
The joint section 2611 and the joint section 2621 have a cross-section taken along line A-A′, which has a line-folded configuration in order to form a reinforcement structure. The line-folded configuration comprises at least two joined line segments. For example, the line-folded configuration of the reinforcement structure may be a rectangle (as shown in
Alternatively, the joint section 2611 and the joint section 2621 may have a cross-section taken along line A-A′, which is an arc shape to form the reinforcement structure. When the cross-section is an arc shape, the arc shape can be one or more groups of single curvature (as shown in
It is apparent that the shape of the cross-section that can be used to form a reinforcement structure is not limited to these and any can be used provided the strength of the reinforcement structure is improved. Further, it is noted that in all the embodiments of joint section of primary assembling piece shown in
Referring to
It can be appreciated that the embodiment of the present invention forms a back frame through a joining operation so that the back frame has a simple structure, the material used form the back frame is saved, and the manufacturing of a backlighting display device is reduced. Further, with a reinforcement structure provided at a joining site of the primary assembling piece, the strength of the back frame at the joining site can be improved to thereby allow the overall strength of the back frame to meet the required strength.
It is noted all the embodiments of the reinforcement structure described above are also applicable to various embodiments of back frame, backlight system, and flat panel display device that will be described.
The present invention also provides a bracing piece that is applicable to each of the above discussed embodiments and is mounted to the assembling pieces for fixing a circuit board. Referring to
The first suspension section 62 extends from the bracing body 61 toward one side of the bracing body 61. The first bearing section 63 is spaced from the bracing body 61 and extends from the first suspension section 62 toward one side of the first suspension section 62. The first resilient bent section 64 is located between the first bearing section 62 and the bracing body 61 and is bent from the first suspension section 62 toward one side of the first suspension section 62. The first bearing section 63 and the first resilient bent section 64 resiliently clamp a first side edge of a circuit board 80.
Referring to
Referring to
Referring to
With the above discussed manners, the present invention provides a back frame and a backlight system that comprises assembling pieces that employs a joining process to form a back frame so as to make the back frame simple in structure, save the material used for back frame, and thus lower down the manufacturing cost of backlighting display device Further, with a bracing piece that comprises a bracing body, a first suspension section, a first bearing section, and a first resilient bent section being used to fix a circuit board, the cost of mold is reduced and the problem that a circuit board cannot be easily fixed is overcome.
As shown in
As shown in
Step 501: manufacturing at least first and second primary assembling pieces, in which the first primary assembling piece has an end forming at least two joint sections, each of the joint sections having a structure that mates a corresponding end of the second primary assembling piece; and
Step 502: selecting one joint section of the at least two joint sections according to a size of the back frame to join the corresponding end of the second primary assembling piece.
In the instant embodiment, when other joint sections are present between the joining location of the second primary assembling piece and the end of the first primary assembling piece, before or after the step of selecting one joint section of the at least two joint sections according to a size of the back frame to join the corresponding end of the second primary assembling piece, the other joint sections of the first primary assembling piece that are located outward of the joining position of the second primary assembling piece are trimmed off. The first primary assembling piece comprises the previously discussed first primary assembling piece, and the second primary assembling piece comprises the previously discussed second primary assembling piece, and repeated description will be omitted herein.
As shown in
The backlight system 21 comprises a light source 25, a light homogenization mechanism 24, and a back frame 23. The back frame 23 carries the light source 25 and the light homogenization mechanism 24. When the backlight system 21 is an edge lighting type, the light homogenization mechanism 24 is a light guide; and when the backlight system 21 is a direct type, the light homogenization mechanism 24 is a diffuser plate. The back frame 23 comprises at least a first primary assembling piece and a second primary assembling piece, and the at least one first and second primary assembling pieces constitute a main frame structure 27 of the back frame 23.
It is apparent that the backlight system 21 can be of a structure of any one of the previously discussed embodiments of the backlight system.
It is noted that the flat panel display device 20 of the present invention can be a liquid crystal display device or a liquid crystal television.
The present invention also provides a stereoscopic display device 30, as shown in
The present invention also provides a plasma display device 40, as shown in
With the above discussed manners, the present invention provides a flat panel display device, a stereoscopic display device, and a plasma display device that have a mold for back frame that is of a simple structure, reduce the expenditure for mold of back frame, and also save the material used for back frame so as to lower down the cost of flat panel display device.
Embodiments of the present invention have been described, but are not intending to impose any undue constraint to the appended claims of the present invention. Any modification of equivalent structure or equivalent process made according to the disclosure and drawings of the present invention, or any application thereof, directly or indirectly, to other related fields of technique, is considered encompassed in the scope of protection defined by the claims of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2011 1 0366167 | Nov 2011 | CN | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/CN2011/082801 | 11/24/2011 | WO | 00 | 12/31/2011 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2013/071616 | 5/23/2013 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 7130005 | Takata et al. | Oct 2006 | B2 |
| 20070217223 | Ha et al. | Sep 2007 | A1 |
| 20100060601 | Oohira | Mar 2010 | A1 |
| 20100172154 | Takeuchi et al. | Jul 2010 | A1 |
| 20100271845 | Chiu et al. | Oct 2010 | A1 |
| 20110199548 | Takama | Aug 2011 | A1 |
| Number | Date | Country |
|---|---|---|
| 1340881 | Mar 2002 | CN |
| 101109862 | Jan 2008 | CN |
| 101150942 | Mar 2008 | CN |
| 201075299 | Jun 2008 | CN |
| 101447147 | Jun 2009 | CN |
| 201672468 | Dec 2010 | CN |
| 101990382 | Mar 2011 | CN |
| 201757332 | Mar 2011 | CN |
| 102243402 | Nov 2011 | CN |
| 202033550 | Nov 2011 | CN |
| 102392987 | Mar 2012 | CN |
| 2006-85125 | Mar 2006 | JP |
| Number | Date | Country | |
|---|---|---|---|
| 20130128159 A1 | May 2013 | US |
