CN110534020B - Lamp panel, backlight module and display device - Google Patents
Lamp panel, backlight module and display device Download PDFInfo
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- CN110534020B CN110534020B CN201910938845.8A CN201910938845A CN110534020B CN 110534020 B CN110534020 B CN 110534020B CN 201910938845 A CN201910938845 A CN 201910938845A CN 110534020 B CN110534020 B CN 110534020B
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- circuit board
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- 238000005452 bending Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 5
- 239000002390 adhesive tape Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 29
- 238000010030 laminating Methods 0.000 description 5
- 239000012788 optical film Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000013003 hot bending Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- Engineering & Computer Science (AREA)
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- Planar Illumination Modules (AREA)
Abstract
The invention relates to the technical field of display equipment and discloses a lamp panel, a backlight module and a display device, wherein the lamp panel comprises a flexible circuit board, a first side surface and a second side surface; the light source is positioned on the first side face of the flexible circuit board; the supporting plate is positioned on the second side surface of the flexible circuit board and comprises a plurality of supporting parts which can be spliced in sequence, the supporting parts are of strip structures, and one side, close to the flexible circuit board, of each supporting part is connected with the second side surface of the flexible circuit board; wherein the flexible circuit board can be bent in the arrangement direction of the plurality of support parts; when the flexible circuit board is in a flattening state, one side of the plurality of supporting parts, which is far away from the flexible circuit board, is spliced flatly; when the flexible circuit board is in a bent state, the side, away from the flexible circuit board, of the supporting parts is not spliced. This lamp plate can reduce the stress of buckling, guarantees the lamp plate and the good attached of backplate, and the mixed light distance of light source is unchangeable, and then solves the uneven problem of curved surface display panel display luminance because of the stress problem of buckling leads to.
Description
Technical Field
The invention relates to the technical field of display equipment, in particular to a lamp panel, a backlight module and a display device.
Background
At present, curved surface display screens are frequently used in the fields of vehicle-mounted display screens and the like. The slope of on-vehicle curved surface display screen requires specification at present for R700 ~ R1000, and when making curved surface display screen, curved surface display panel is laminated with encapsulation glass after the hot bending, and backlight unit includes backplate and the attached lamp plate to the backplate, and the backplate adopts the direct bending of mould to shape, and the lamp plate generally is the flat board, needs the backplate laminating with the curved surface.
As shown in fig. 1, fig. 1 is a schematic view of a structure for attaching a lamp panel to a backplane in the prior art. When lamp plate 01 and crooked backplate 02 laminating, lamp plate 01 can receive the stress that the bending produced, probably leads to lamp plate 01 subregion and backplate 02 to break away from when stress is too big, perhaps causes LED light source 03 and the circuit contact failure on the lamp plate 01, and LED light source 03 is luminous not, and then leads to LED light source 03 mixed light distance on the lamp plate 01 to change, appears the inhomogeneous problem of curved surface display panel screen luminance.
Disclosure of Invention
The invention provides a lamp panel, a backlight module and a display device, wherein the lamp panel can solve the problem of uneven display brightness of a curved display panel caused by bending stress.
In order to achieve the purpose, the invention provides the following technical scheme:
a light panel, comprising:
the flexible circuit board comprises a first side surface and a second side surface;
a light source located at a first side of the flexible circuit board;
the supporting plate is positioned on the second side surface of the flexible circuit board and comprises a plurality of supporting parts which can be spliced in sequence, the supporting parts are of strip structures, and one side, close to the flexible circuit board, of each supporting part is connected with the second side surface of the flexible circuit board; wherein,
the flexible circuit board may be bent in an arrangement direction of the plurality of support portions;
when the flexible circuit board is in a flattening state, one side of the supporting parts, which is far away from the flexible circuit board, is spliced flatly;
when the flexible circuit board is in a bent state, the supporting parts are not spliced with each other at the side far away from the flexible circuit board.
The invention also provides a backlight module which comprises the lamp panel provided in the technical scheme.
The invention also provides a display device which comprises the backlight module provided in the technical scheme.
The lamp panel provided by the invention comprises a flexible circuit board, a light source and a supporting plate, wherein the flexible circuit board is provided with a first side surface and a second side surface, the light source is arranged on the first side surface of the flexible circuit board, the supporting plate is arranged on the second side surface of the flexible circuit board, the supporting plate is composed of a plurality of supporting parts which can be spliced in sequence, the supporting parts are of strip-shaped structures, and one side, close to the flexible circuit board, of each supporting part is connected with the second side surface of the flexible circuit board. In the lamp panel, when the flexible circuit board is in a flattened state, one side of the plurality of supporting parts, which is far away from the flexible circuit board, is spliced flatly, so that the smoothness of the flexible circuit board when a light source is attached to the flexible circuit board can be ensured, and good attachment of the light source is ensured; the flexible circuit board can be crooked in the array orientation of a plurality of supporting parts, when the flexible circuit board is crooked state, the concatenation can be removed to one side that the flexible circuit board was kept away from to a plurality of supporting parts, every supporting part branch is bent, reduce the stress of buckling, do not influence the flexible circuit board and crooked, make when the lamp plate pastes with crooked backplate, can reduce the stress of buckling, guarantee the good attached of lamp plate and backplate, the mixed light distance of light source is unchangeable, and then solve the uneven problem of curved surface display panel demonstration luminance because of buckling stress problem and leading to.
Drawings
Fig. 1 is a schematic structural view of a lamp panel and a back panel in the prior art;
fig. 2a is a schematic structural diagram of a lamp panel according to an embodiment of the present invention;
fig. 2b is a schematic view of a lamp panel in a bent state according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a light source distribution structure on a lamp panel according to an embodiment of the present invention;
fig. 4a is a diagram illustrating a splicing state of a support portion according to an embodiment of the present invention;
FIG. 4b is a diagram illustrating a splicing state of the supporting portion according to the embodiment of the present invention;
fig. 5a is a schematic structural diagram of a supporting portion according to an embodiment of the present invention;
FIG. 5b is a schematic view of a support portion being released from splicing according to an embodiment of the present invention;
fig. 6a is a schematic structural diagram of a supporting portion according to an embodiment of the present invention;
FIG. 6b is a schematic view of a support portion being released from splicing according to an embodiment of the present invention;
fig. 7a is a schematic diagram of a splicing structure of a supporting portion according to an embodiment of the present invention;
FIG. 7b is a schematic view illustrating a state where the support portions are not spliced according to an embodiment of the present invention;
fig. 8a is a schematic structural diagram of a lamp panel according to an embodiment of the present invention;
FIG. 8b is a view of a curved state of a light panel according to an embodiment of the present invention;
fig. 9a is a schematic structural diagram of a lamp panel according to an embodiment of the present invention;
FIG. 9b is a view of a curved state of a light panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a lamp panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a lamp panel according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a backlight module according to an embodiment of the invention.
Icon:
01-a circuit board; 02-a back plate; 03-a light source;
1. a flexible circuit board; 2. a light source; 3-a support plate; 31-a support; 311-a first splice; 312-a second splice; 313-a groove; 314-a bump; 4-double sided adhesive tape; 5-a back plate; 6-glue frame; 7-a light guide plate; 8-optical film layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2a and fig. 2b, the present invention provides a lamp panel, including:
a flexible circuit board 1 including a first side and a second side;
the light source 2 is positioned on the first side surface of the flexible circuit board 1;
the supporting plate 3 is positioned on the second side surface of the flexible circuit board 1 and comprises a plurality of supporting parts 31 which can be spliced in sequence, the supporting parts 31 are in strip structures, and one side, close to the flexible circuit board 1, of each supporting part 31 is connected with the second side surface of the flexible circuit board 1; wherein,
the flexible circuit board 1 can be bent in the arrangement direction of the plurality of support portions 31;
when the flexible circuit board 1 is in a flattened state, one side of the plurality of supporting parts 31 far away from the flexible circuit board 1 is spliced flatly;
when the flexible circuit board 1 is in a bent state, the side of the plurality of supporting parts 31 away from the flexible circuit board 1 is released from the splice.
The lamp panel provided by the embodiment of the invention comprises a flexible circuit board 1, a light source 2 and a support plate 3, wherein the flexible circuit board 1 is provided with a first side surface and a second side surface, the light source 2 is arranged on the first side surface of the flexible circuit board 1, the support plate 3 is arranged on the second side surface of the flexible circuit board 1, the support plate 3 is composed of a plurality of support parts 31 which can be spliced in sequence, the support parts 31 are of strip-shaped structures, and one side, close to the flexible circuit board 1, of each support part 31 is connected with the second side surface of. Specifically, as shown in fig. 2a, fig. 2a is a schematic structural diagram of a lamp panel according to an embodiment of the present invention, in the lamp panel, when the flexible circuit board 1 is in a flattened state, one side of the plurality of supporting portions 31 away from the flexible circuit board 1 is smoothly spliced, so that smoothness of the flexible circuit board 1 when the light source 2 is attached to the flexible circuit board 1 can be ensured, and good attachment of the light source 2 is ensured; as shown in fig. 2b, fig. 2b is a schematic diagram of a curved lamp panel according to an embodiment of the present invention, a flexible circuit board 1 may be curved in an arrangement direction of a plurality of supporting portions 31, when the flexible circuit board 1 is in a curved state, one side of the plurality of supporting portions 31 away from the flexible circuit board 1 may be removed from splicing, each supporting portion is bent in a strip shape, so as to reduce bending stress, and the bending of the flexible circuit board 1 is not affected, so that when the lamp panel is attached to a curved backboard, the bending stress may be reduced, good attachment of the lamp panel to the backboard is ensured, a light mixing distance of a light source 2 is not changed, and a problem of uneven display brightness of a curved display screen due to the bending stress is solved.
The material of the hard support plate 3 may be a rigid material such as metal or plastic, which can support the flexible circuit board, and is not particularly limited herein as long as the rigid material can support the flexible circuit board.
In the lamp panel provided in the embodiment of the present invention, as shown in fig. 3, fig. 3 is a schematic view of a light source distribution structure on the lamp panel provided in the embodiment of the present invention, when the flexible circuit board 1 is in a flattened state, the plurality of light sources 2 arranged on the flexible circuit board 1 are uniformly distributed, and since the flexible circuit board can be freely bent, bending stress of the lamp panel is reduced, so that when the flexible circuit board 1 is bent, the light sources 2 are uniformly mixed.
In the lamp panel provided in the embodiment of the present invention, specifically, each of the supporting portions 31 on the supporting plate 3 may be a rectangular strip structure, which is simple in structure and easy to manufacture, when the flexible circuit board 1 is in a flattened state, a splicing state of one side of the supporting portions 31 away from the flexible circuit board 1 is as shown in fig. 4a, and fig. 4a is a splicing state diagram of one supporting portion provided in the embodiment of the present invention.
It should be noted that, there may be a gap between the two supporting portions 31, as shown in fig. 2a, to avoid that the two supporting portions 31 press against each other at the side adjacent to the flexible circuit board 1 when the flexible circuit board 1 is bent.
In the lamp panel provided by the embodiment of the invention, specifically, two opposite end portions of every two adjacent supporting portions 31 can be further provided with a splicing structure, so that when the flexible circuit board 1 is in a flattened state, the splicing state among the supporting portions 31 is smoother and more stable. As shown in fig. 4b, fig. 4b is a splicing state diagram of the supporting portions according to the embodiment of the present invention, the splicing structure may specifically include a first splicing portion 311 and a second splicing portion 312 respectively disposed on the two supporting portions 31, when the flexible circuit board 1 is in a flat state, the first splicing portion 311 is engaged with the second splicing portion 312, and when the flexible circuit board 1 is in a bent state, the first splicing portion 311 is disengaged from the second splicing portion 312.
Specifically, as shown in fig. 5a, fig. 5a is a schematic structural diagram of a supporting portion according to an embodiment of the present invention, the first splicing portion 311 includes at least one groove 313, and the second splicing portion 312 includes protrusions 314 that are in one-to-one correspondence with the grooves 313. When flexible circuit board 1 is the exhibition flat state, lug 314 can cooperate and insert in recess 313, make and form the concatenation form between the supporting part 31, play the effect of support to flexible circuit board 1, be favorable to the attached of light source 2 on flexible circuit board 1, when flexible circuit board 1 needs the bending, lug 314 and recess 313 remove the concatenation state, every supporting part strip is bent, reduce the stress of buckling, do not influence the buckling of flexible circuit board 1, make the lamp plate can reduce the stress of buckling when laminating with the backplate.
It should be noted that the number of the groove 313 of the first splicing portion 311 and the number of the protrusion 314 of the second splicing portion 312 may be one or more, which may be determined according to practical situations and is not limited herein.
In the lamp panel provided by the embodiment of the present invention, the groove 313 may be a rectangular groove arranged along the extending direction of the support plate 3, and the protrusion 314 is a rectangular structure matched with the rectangular groove.
Specifically, as shown in fig. 5a, in two adjacent supporting portions 31, the rectangular groove 313 may be disposed at an end portion penetrating through the supporting portion 31, the protrusion 314 is a protrusion 314 having a shape and a size matched with the groove 313, and when the flexible circuit board 1 is in a flattened state, the protrusion 314 is spliced with the groove 313, so that two opposite end portions of the two adjacent supporting portions 31 are inserted into each other, and the structure is simple and easy to manufacture. The splicing state of the groove 313 and the bump 314 is shown in fig. 4 b; correspondingly, as shown in fig. 5b, fig. 5b is a schematic diagram of a state where the supporting portions 31 are removed from being spliced according to the embodiment of the present invention, and as the flexible circuit board 1 is bent, the supporting portions 31 are removed from being spliced, and each supporting portion is bent separately, bending stress is reduced, bending of the flexible circuit board 1 is not affected, so that bending stress can be reduced when the lamp panel is attached to the back panel. After the groove 313 and the projection 314 are separated, the projection 314 and the end of the supporting portion 31 are staggered.
Optionally, as shown in fig. 6a, fig. 6a is a schematic structural diagram of a supporting portion 31 according to an embodiment of the present invention, in two adjacent supporting portions 31, the rectangular groove 313 may also be disposed on a side (a position shown by a dotted line) of the supporting portion 31 facing away from the flexible circuit board 1, the groove 313 has two openings, one opening of the groove 313 faces the side of the supporting portion 31 facing away from the flexible circuit board 1, and the other opening faces the supporting portion 31 adjacent thereto, and a bump 314 having a size and a shape matching with the groove 313 is disposed on the supporting portion 31 opposite to the opening. The splicing state of the groove 313 and the bump 314 is shown in fig. 4 b; correspondingly, as shown in fig. 6b, fig. 6b is a schematic diagram of a state where the supporting portions 31 are removed from being spliced according to the embodiment of the present invention, and as the flexible circuit board 1 is bent, the supporting portions 31 are removed from being spliced, and each supporting portion is bent separately, bending stress is reduced, bending of the flexible circuit board 1 is not affected, so that bending stress can be reduced when the lamp panel is attached to the back panel. After the groove 313 and the bump 314 are separated, the bump 314 is drawn out through the opening of the groove 313.
In the lamp panel provided in the above embodiment of the invention, specifically, as shown in fig. 7a, fig. 7a is a schematic diagram of a splicing structure of the supporting portion 31 provided in the embodiment of the invention, the groove 313 may also be a cylindrical groove arranged along the extending direction of the supporting portion 31, a portion of the cylindrical groove opposite to the protrusion 314 has an opening, the protrusion 314 is a cylindrical structure matched with the cylindrical groove, and the protrusion 314 may be inserted into the groove 313 through the opening to be engaged with the groove 313. Correspondingly, as shown in fig. 7b, fig. 7b is a schematic diagram of a state where the supporting portions 31 are released from splicing according to the embodiment of the present invention, and as the flexible circuit board 1 is bent, the supporting portions 31 are released from splicing, and each supporting portion is bent separately, bending stress is reduced, bending of the flexible circuit board 1 is not affected, so that bending stress can be reduced when the lamp panel is attached to the back panel. After the groove 313 and the bump 314 are separated, the bump 314 is drawn out from the groove 313 through the opening.
In the above-mentioned lamp panel, the shape of the supporting portion 31 may be other shapes, which is determined according to actual conditions and is not limited herein.
It should be noted that, a gap may be formed between the two supporting portions 31 having the splicing portion, so as to prevent the two supporting portions 31 from pressing against each other at a side close to the flexible circuit board 1 when the flexible circuit board 1 is bent.
Specifically, in the splicing structure between the two support portions 31, the end portion of one of the support portions 31 can be simultaneously provided with the first splicing portion 311 and the second splicing portion 312, and the end portion of the other support portion 31 is provided with the corresponding second splicing portion 312 and the first splicing portion 311, so that the splicing structure between the support portions 31 can be realized. In the plurality of supporting portions 31 arranged in sequence, the two ends of the supporting portion 31 located in the middle position may be respectively provided with the first splicing portion 311 and the second splicing portion 312, or may not be provided with the first splicing portion 311 and the second splicing portion 312 in sequence, for example, the two ends of one supporting portion 31 located in the middle are both provided with the first splicing portion 311 or both provided with the second splicing portion 312. In the lamp panel provided in the above embodiment of the invention, the end of the supporting portion 31 is provided with the first splicing portion and the second splicing portion, which is determined according to actual situations and is not limited specifically here.
In the lamp panel provided in the above embodiment of the present invention, when the lamp panel is bent, the bending stress of the middle area of the lamp panel is the largest, as shown in fig. 8a, fig. 8a is a schematic structural diagram of the lamp panel provided in the embodiment of the present invention, in order to reduce the bending stress of the middle area of the lamp panel, a supporting portion 31 may be provided, which has a smaller distance from the middle area of the flexible circuit board, and the width of the supporting portion 31 in the arrangement direction is smaller. For example, as shown in fig. 8a, the width of the support 31 on the area a closest to the middle area of the flexible circuit board 1 corresponds to the width of one row of light sources 2, the width of the support 31 on the area C farther from the middle area corresponds to the width of three rows of light sources 2, and the width of the support 31 on the area B between the areas a and C corresponds to the width of two rows of light sources 2. Correspondingly, as shown in fig. 8b, fig. 8b is a curved state diagram of the lamp panel according to the embodiment of the present invention, because the support portion 31 having a smaller distance from the middle region of the flexible circuit board has a smaller width along the arrangement direction of the plurality of support portions 31, the bending stress of the middle region of the lamp panel can be effectively reduced. In the lamp panel provided by the embodiment of the present invention, the width of each supporting portion 31 along the arrangement direction of the supporting portions 31 may also be the same width, which is determined according to the actual situation and is not limited herein.
In fig. 8a, only the strip-shaped support portions 31 having a rectangular shape are shown, and the support portions 31 in the drawing may be support portions 31 having a splice structure. And when the second splicing portion 312 is provided on the supporting portion 31, the width of the supporting portion 31 does not include the width of the second splicing portion 312.
In the lamp panel provided in the above embodiment of the present invention, specifically, as shown in fig. 8a, in order to make the bending stresses at both sides of the middle region of the curved lamp panel the same, the plurality of supporting portions 31 may be symmetrically distributed along the middle region of the flexible circuit board 1.
In the lamp panel provided in the embodiment of the present invention, as shown in fig. 9a and 9b, fig. 9a is a schematic structural diagram of the lamp panel provided in the embodiment of the present invention, and fig. 9b is a curved state diagram of the lamp panel provided in the embodiment of the present invention, each two adjacent supporting portions 31 are connected to one side of the flexible circuit board 1, so that under the condition that the bending stress of the lamp panel is reduced, the connection between the supporting plate 3 and the flexible circuit board 1 is better, the flexible circuit board 1 is flatter in a flattened state, which is beneficial to the attachment of the light source 2, and the flexible circuit board 1 is curved more smoothly in a curved state, so as to ensure uniform light mixing of the light source.
Specifically, as shown in fig. 10, fig. 10 is a schematic structural diagram of a lamp panel according to an embodiment of the present invention, and the second side surface of the flexible circuit board 1 is fixedly connected to one side of the supporting portion 31 adjacent to the flexible circuit board 1 through the double-sided tape 4.
The invention also provides a backlight module which comprises the lamp panel provided in the technical scheme.
As shown in fig. 11, which is a schematic structural diagram of a lamp panel provided in an embodiment of the present invention, in a state where the lamp panel is bent, since the first splicing portion and the second splicing portion are not spliced, a protruding portion C may be generated on a side of the supporting plate 3 away from the flexible circuit board 1;
as shown in fig. 12, which is a schematic structural diagram of a backlight module according to an embodiment of the present invention, the backlight module includes a lamp panel, a back plate 5, a rubber frame 6, a light guide plate 7, an optical film group 8, and the like, where the lamp panel includes a flexible circuit board 1, a light source 2 on a first side surface of the flexible circuit board 1, and a supporting plate 3 on the first side surface of the flexible circuit board 1, the supporting plate 3 includes a plurality of strip-shaped supporting portions (not shown in fig. 12) arranged in sequence, and the optical film group specifically includes a plurality of layers of optical films. In the manufacturing process of the curved-surface display screen, a structure formed by a back plate, a rubber frame, a light guide plate, an optical diaphragm and the like in the backlight source is bent and formed by a mold, and the lamp panel is attached to the curved back plate in a straight state. In fig. 12, backup pad 3 has on the flexible circuit board 1 of lamp plate, backup pad 3 includes a plurality of supporting parts, when flexible circuit board is in the exhibition flat state, the one side that deviates from flexible circuit board between a plurality of supporting parts levels the concatenation, when flexible circuit board 1 is the bending state, the concatenation can be removed to one side that flexible circuit board 1 was kept away from to a plurality of supporting parts, every supporting part divides the strip to bend, reduce the stress of buckling, do not influence the flexible circuit board crooked, make when lamp plate and crooked backplate laminate, can reduce the stress of buckling, guarantee the good attached of lamp plate and backplate, light source 2 is unchangeable to light guide plate 7's mixed light distance, and then solve the uneven problem of curved surface display screen display luminance because of the stress problem of buckling leads to.
Among the above-mentioned display device, when the curved surface display screen is made, when lamp plate and backplate laminate, when the lamp plate is crooked, remove the concatenation between the supporting part of backup pad, but because can produce like the salient region C shown in FIG. 11 after solving the concatenation between two supporting parts, then need produce the draw-in groove that salient part C that produces with the supporting part of lamp plate produced in the backplate preparation, so that backplate and lamp plate laminate, the bending stress of lamp plate reduces, the good laminating of lamp plate and backplate, the mixed light distance situation that light source 2 to light guide plate 7 changed has been avoided, because the mixed light distance (the position is drawn to the dotted line) of light guide plate 7 does not change, and then solve the uneven problem of curved surface display screen display luminance that leads to because of the bending stress problem.
The invention also provides a display device which comprises the backlight module provided in the technical scheme. Above-mentioned display device can be for the on-vehicle display device who has the curved surface display screen, equipment such as TV, computer screen, including the display panel of curved surface and the backlight unit who has camber in the display device, and the lamp plate that sets up in the backlight unit includes the light source of flexible circuit board, the first side of flexible circuit board and the backup pad of the first side of flexible circuit board, includes a plurality of strip supporting parts that arrange in proper order in the backup pad. When the flexible circuit board is in the exhibition flat state, the one side that deviates from the flexible circuit board between a plurality of supporting parts is leveled the concatenation, when the flexible circuit board is crooked state, the concatenation can be removed to one side that the flexible circuit board was kept away from to a plurality of supporting parts, every supporting part divides the strip to bend, reduce the stress of buckling, do not influence the flexible circuit board crooked, when making laminating at the lamp plate with crooked backplate, can reduce the stress of buckling, guarantee the good attached of lamp plate and backplate, the mixed light distance of light source to light guide plate is unchangeable, and then solve the uneven problem of curved surface display screen display luminance because of the stress problem of buckling leads to.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. The utility model provides a lamp plate, its characterized in that includes:
the flexible circuit board comprises a first side surface and a second side surface;
a light source located at a first side of the flexible circuit board;
the supporting plate is positioned on the second side surface of the flexible circuit board and comprises a plurality of supporting parts which can be spliced in sequence, the supporting parts are of strip structures, and one side, close to the flexible circuit board, of each supporting part is connected with the second side surface of the flexible circuit board; wherein,
the flexible circuit board may be bent in an arrangement direction of the plurality of support portions;
when the flexible circuit board is in a flattening state, one side of the supporting parts, which is far away from the flexible circuit board, is spliced flatly;
when the flexible circuit board is in a bent state, one side of the supporting parts, which is far away from the flexible circuit board, is not spliced;
the material of the supporting plate is a rigid material which can be used for supporting the flexible circuit board.
2. The lamp panel of claim 1, wherein two opposite end portions of each two adjacent supporting portions are respectively provided with a first splicing portion and a second splicing portion;
when the flexible circuit board is in a flattening state, the first splicing part and the second splicing part are clamped and spliced;
and when the flexible circuit board is in a bent state, the first splicing part and the second splicing part are disconnected and clamped.
3. The lamp panel of claim 2, wherein the first splicing portion includes at least one groove, and the second splicing portion includes a protrusion that is in one-to-one correspondence with the groove.
4. The lamp panel of claim 3, wherein the groove is shaped as a cylindrical groove arranged along the extending direction of the support portion, an opening is formed in a position, opposite to the projection, of the cylindrical groove, the projection is shaped as a cylinder structure matched with the cylindrical groove, and the projection can be inserted into the groove through the opening to be clamped with the groove.
5. The lamp panel of claim 3, wherein the groove is shaped as a rectangular groove arranged along the extending direction of the support plate, and the protrusion is shaped as a rectangular structure matched with the rectangular groove.
6. The lamp panel of claim 1, wherein each two adjacent support portions are connected to one side of the flexible circuit board adjacent to the support portions.
7. The lamp panel of claim 1, wherein when the flexible circuit board is in a bent state, the bending stress of the middle area of the flexible circuit board is maximum, and the width of the supporting portion is smaller as the distance from the middle area is smaller.
8. The lamp panel of claim 7, wherein the plurality of support portions are symmetrically distributed along a middle region of the flexible circuit board.
9. The lamp panel of claim 1, wherein the second side of the flexible circuit board is fixedly connected to one side of the supporting portion adjacent to the flexible circuit board through a double-sided adhesive tape.
10. A backlight module characterized by comprising the lamp panel of any one of claims 1 to 9.
11. A display device comprising the backlight module according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938845.8A CN110534020B (en) | 2019-09-30 | 2019-09-30 | Lamp panel, backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938845.8A CN110534020B (en) | 2019-09-30 | 2019-09-30 | Lamp panel, backlight module and display device |
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| Publication Number | Publication Date |
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| CN110534020A CN110534020A (en) | 2019-12-03 |
| CN110534020B true CN110534020B (en) | 2021-09-21 |
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| CN201910938845.8A Active CN110534020B (en) | 2019-09-30 | 2019-09-30 | Lamp panel, backlight module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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