CN110133917B - Curved surface backlight module and display device - Google Patents
Curved surface backlight module and display device Download PDFInfo
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- CN110133917B CN110133917B CN201910580523.0A CN201910580523A CN110133917B CN 110133917 B CN110133917 B CN 110133917B CN 201910580523 A CN201910580523 A CN 201910580523A CN 110133917 B CN110133917 B CN 110133917B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
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Abstract
The invention discloses a curved backlight module and a display device, wherein the curved backlight module comprises: a curved backboard and a curved lamp panel; the curved backboard comprises a first curved surface and a second curved surface which are opposite; the first curved surface is arranged close to the light emitting side of the curved surface backlight module; the curved surface lamp panel is formed by bending an initial lamp panel, and a plurality of light sources arranged in an array on the curved surface lamp panel are fixed on the front surface of the curved surface lamp panel through bonding pads; the back surface of the curved surface lamp panel is close to the first curved surface of the curved surface backboard; the front of the curved surface lamp panel is provided with at least one groove, and the groove is arranged in a lamp panel gap area between adjacent light sources. The invention provides a curved surface backlight module and a display device, which are used for solving the problems that a bonding pad is easy to fall off and a light source is easy to damage when a lamp panel of the traditional curved surface backlight module is bent.
Description
Technical Field
The invention relates to the technical field of display, in particular to a curved surface backlight module and a display device.
Background
With the development of science and technology, display devices are widely applied to daily life and work, and most of display panels in the display devices are liquid crystal display panels at present. Along with the increasing demands for curved screens, the backlight module of the full screen can be a curved backlight module, so that a wider viewing angle can be conveniently presented, and a better display effect can be obtained. The curved surface screen is particularly suitable for a vehicle-mounted display device, is convenient for installation of a large-size display screen, and can be installed in an instrument panel, a vehicle roof and a seat backrest.
The backlight module comprises a back plate and a lamp plate attached to the back plate, wherein the back plate of the curved surface backlight module is molded by adopting a curvature mold, the lamp plate is generally flat and needs to be attached to the back plate with a curved surface, in the bending process of the lamp plate, the stress concentration areas of the flexible lamp plate are mutually extruded, the bonding pads on the lamp plate are easily caused to fall off, and then the problem of circuit breakage of light emitting diodes (Light Emitting Diode, LEDs) on the lamp plate is caused.
Disclosure of Invention
The embodiment of the invention provides a curved surface backlight module and a display device, which are used for solving the problems that a bonding pad is easy to fall off and a light source is easy to damage when a lamp panel of the traditional curved surface backlight module is bent.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a curved backboard and a curved lamp panel;
the curved backboard comprises a first curved surface and a second curved surface which are opposite; the first curved surface is arranged close to the light emitting side of the curved surface backlight module; the curved surface lamp panel is formed by bending an initial lamp panel, and a plurality of light sources arranged in an array on the curved surface lamp panel are fixed on the front surface of the curved surface lamp panel through bonding pads; the back surface of the curved surface lamp panel is close to the first curved surface of the curved surface backboard;
the front of the curved surface lamp panel is provided with at least one groove, and the groove is arranged in a lamp panel gap area between adjacent light sources.
In a second aspect, an embodiment of the present invention further provides a display device, including the curved backlight module provided in any embodiment of the present invention and a display panel located on a light emitting side of the curved backlight module.
In the invention, the curved backlight module comprises a curved back plate and a curved lamp plate, the curved back plate comprises a first curved surface and a second curved surface which are oppositely arranged, the first curved surface is close to the light emitting side of the curved backlight module, the curved lamp plate is formed by bending a planar initial lamp plate, the curved lamp plate comprises a front surface and a backlight, the front surface of the curved lamp plate is fixedly provided with a plurality of light sources through bonding pads, the back surface of the curved lamp plate is close to the first surface of the curved back plate, at least one groove is arranged on the front surface of the curved lamp plate, the groove is arranged in a lamp plate gap area between adjacent light sources, and then the initial lamp plate can release bending stress of the curved lamp plate in the process of bending the curved lamp plate, so that the bonding pads are prevented from falling off and the like, the occurrence of dead lamp phenomena is prevented, and the light sources are protected. And because the stress of the area with concentrated stress of the curved surface lamp panel is released by the groove, the curved surface lamp panel is not easy to warp and is peeled off from the backboard, and the light mixing distance of the light source on the curved surface lamp panel cannot be changed, so that the problem of uneven display of the display panel corresponding to the curved surface backlight module is effectively prevented.
Drawings
Fig. 1 is a schematic structural diagram of a backlight module in the prior art;
fig. 2 is a schematic structural diagram of a curved backlight module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an initial lamp panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a curved lamp panel according to an embodiment of the present invention;
fig. 5 is a front view of a curved lamp panel according to an embodiment of the present invention;
FIG. 6 is an isometric view of a curved panel provided by an embodiment of the present invention;
fig. 7 is a front view of a curved lamp panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of another initial lamp panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another curved lamp panel according to an embodiment of the present invention;
fig. 10 is a schematic view of a part of a structure of a curved lamp panel according to an embodiment of the present invention;
FIG. 11 is a schematic view of a portion of another curved panel according to an embodiment of the present invention;
FIG. 12 is a front view of another curved panel provided by an embodiment of the present invention;
fig. 13 is a front view of another curved lamp panel according to an embodiment of the present invention
Fig. 14 is a schematic view of a portion of another curved panel according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of a backlight module in the prior art, and the curved backlight module includes a back plate 11, and a lamp panel 12 attached to the back plate 11, and a plurality of light sources 121 on the lamp panel 12. Because the existing curved backlight module is molded by a curvature mold or is bent into a curved surface by a planar back plate, the flexible lamp panel 12 is attached to the curved back plate by the planar lamp panel to form a curved lamp panel. In the process of bending the light panel 12, stress is concentrated at some positions of the light panel 12, as shown in fig. 1, the stress concentrated positions are easily extruded to cause the falling of the bonding pads 122, and the light source 121 is dead, even the light source 121 is damaged.
In order to solve the above problems, an embodiment of the present invention provides a curved backlight module, including:
a curved backboard and a curved lamp panel;
the curved backboard comprises a first curved surface and a second curved surface which are opposite; the first curved surface is arranged close to the light emitting side of the curved surface backlight module; the curved surface lamp panel is formed by bending an initial lamp panel, and a plurality of light sources arranged in an array on the curved surface lamp panel are fixed on the front surface of the curved surface lamp panel through bonding pads; the back surface of the curved surface lamp panel is close to the first curved surface of the curved surface backboard;
the front of the curved surface lamp panel is provided with at least one groove, and the groove is arranged in a lamp panel gap area between adjacent light sources.
In the embodiment of the invention, the curved backlight module comprises a curved back plate and a curved lamp plate, the curved back plate comprises a first curved surface and a second curved surface which are oppositely arranged, the first curved surface is close to the light emitting side of the curved backlight module, the curved lamp plate is formed by bending a planar initial lamp plate, the curved lamp plate comprises a front surface and a backlight, the front surface of the curved lamp plate is fixedly provided with a plurality of light sources through bonding pads, the back surface of the curved lamp plate is close to the first surface of the curved back plate, the front surface of the curved lamp plate is provided with at least one groove, the groove is arranged in a lamp plate gap area between adjacent light sources, and then the bending stress of the curved lamp plate can be released by the groove in the process of bending the initial lamp plate to form the curved lamp plate, the problem that the bonding pads fall off and the like are prevented, the light sources are prevented from being killed, and the light sources are protected. And because the stress of the area with concentrated stress of the curved surface lamp panel is released by the groove, the curved surface lamp panel is not easy to warp and is peeled off from the backboard, and the light mixing distance of the light source on the curved surface lamp panel cannot be changed, so that the problem of uneven display of the display panel corresponding to the curved surface backlight module is effectively prevented.
The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making any inventive effort are intended to fall within the scope of the present invention.
Fig. 2 is a schematic structural diagram of a curved backlight module according to an embodiment of the present invention, and as shown in fig. 2, the curved backlight module 1 includes a curved back plate 11 and a curved light plate 12. The curved surface backboard 11 includes a first curved surface a and a second curved surface b that are disposed opposite to each other, and the first curved surface a is disposed near the light emitting side of the whole curved surface backlight module. The curved light panel 12 is formed by bending a planar initial light panel 12', as shown in fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of the initial light panel provided by the embodiment of the present invention, fig. 4 is a schematic structural diagram of the curved light panel provided by the embodiment of the present invention, and in fig. 3, the back surface of the initial light panel 12' needs to be attached to the first curved surface a of the curved back plate 11 to form the curved light panel 12 shown in fig. 4. With continued reference to fig. 1, a plurality of light sources 121 are arranged on the curved light board 1 in an array manner and are fixed on the front surface of the curved light board 12 through bonding pads 122, and the back surface of the curved light board 12 is disposed close to the first curved surface a of the curved back plate 11. At least one groove 123 is provided on the front surface of the curved panel 12, and the groove is provided in a panel gap region between adjacent light sources 121, the panel gap region being a panel region between the light sources 121 provided by the curved panel 12. The lamp panel gap region in this embodiment further includes an edge region of the curved lamp panel 12 outside of all the light sources 121 of the curved lamp panel 12. As shown in fig. 3 and 4, the groove 123 is less deformed during the pressing. The groove 123 releases bending stress through micro deformation, so that the stress of the curved lamp panel 12 during bending cannot be concentrated to the bonding pad 122 of the light source 121, thereby protecting the bonding pad 122, preventing the bonding pad 122 from falling off and preventing the lamp from being dead.
In addition, as shown in fig. 4, when the curved light panel 12 includes the groove 123, the curved light panel 12 is easier to bend, and when both ends of the curved light panel 12 bend toward the center area after bending, the tension between the grooves 123 will generate the pressures F1 and F2 pointing toward the center, and the resultant force generated by the pressures F1 and F2 points toward the curved back panel 11, so that the bonding between the curved light panel 12 and the curved back panel 11 is tighter, thereby preventing the curved light panel 12 from tilting up on the curved back panel 11 or peeling off from the curved back panel 11.
Fig. 5 is a front view of a curved light panel according to an embodiment of the present invention, and optionally, the front surface of the curved light panel 12 may be provided with at least one groove 123; the groove 123 is disposed in a lamp panel gap region where the line 124 to which the light source 121 is connected is not disposed. As shown in fig. 5, the arrangement position of the groove 123 avoids the arrangement position of the line 124 on the curved lamp panel 12, preventing the groove 123 and the line 124 arranged on the curved lamp panel 12 from being positionally affected each other.
In another example, if the light source connecting line 124 of the curved light panel 12 is disposed on the back surface of the curved light panel 12, the groove 123 disposed on the front surface of the curved light panel 12 may be disposed in a light panel gap area where the light source connecting line 124 is disposed on the curved light panel 12, so long as the groove 123 does not penetrate through the thickness direction of the curved light panel 12, and the groove 123 on the front surface of the curved light panel 12 and the light source connecting line 124 on the back surface of the curved light panel 12 will not affect each other. However, if the light source connection line 124 is disposed on the front surface of the curved lamp panel 12, as shown in fig. 5, the recess 123 on the front surface of the curved lamp panel 12 needs to be disposed at a position away from the light source connection line 124. In addition, when the groove 123 is a through hole penetrating the curved lamp panel 12, the installation position of the groove 123 needs to be avoided regardless of which surface of the curved lamp panel 12 the light source connected line 124 is arranged on.
Alternatively, referring to fig. 3, the recess 123 extends at least partially through the initial lamp panel 12 'in a direction perpendicular to the plane of the initial lamp panel 12'; referring to fig. 2, in the first curved surface a, the groove 123 at least partially penetrates the curved light panel 12 along the first direction x; the first direction x intersects the direction y in which the curved edge of the curved panel 12 lies.
In the direction perpendicular to the plane of the initial lamp panel 12', the depth d1 of the groove 123 is smaller than or equal to the thickness d2 of the initial lamp panel 12', and only a part of the thickness direction of the initial lamp panel 12 'can be dug as the groove 123, or the whole initial lamp panel 12' can be penetrated in the thickness direction to form the groove 123 in the form of a through hole, and the depth of the groove 123 is not limited in this embodiment. In the range of d2 or less, the greater the depth d1 of the groove 123, the smaller the lamp panel thickness of the groove 123 at the position of the initial lamp panel 12', the easier the initial lamp panel 12' is to bend to form a curved lamp panel, and the greater the depth d1 of the groove 123, the stronger the releasing capability of the groove 123 to bending stress of the curved lamp panel 12.
In this embodiment, the curved light panel 12 is attached to the first curved surface a of the curved back plate 11, and when the curved light panel 12 is attached to the first curved surface a of the curved back plate 11, the curved surface at which the first curved surface a is located is the curved surface at which the back surface of the curved light panel 12 is located, and in this embodiment, the first curved surface a is used as the curved surface at which the curved light panel 12 is located. Referring to fig. 6, fig. 6 is an isometric view of a curved light panel provided by the embodiment of the present invention, where the isometric view is a single-sided projection view, and three dimensional shapes of three coordinate planes of an object can be simultaneously reflected on the projection plane shown in fig. 6, so that a specific structure of the curved light panel 12 can be intuitively obtained, and fig. 6 uses a quadrangular curved light panel 12 as an example, and the curved light panel 12 may be other regular or irregular polygons besides a quadrangle, which is not limited in this embodiment. The curved light panel 12 includes a curved edge 12a and a straight edge 12b, and with reference to fig. 2, the edge that can be observed in fig. 2 is a curved edge. With continued reference to fig. 6, in the first curved surface, if the y direction is the direction in which the curved edge of the curved surface light panel 12 is located, the groove 123 at least partially penetrates the curved surface light panel 12 in the first direction x intersecting the direction y in which the curved edge is located, as shown in fig. 6, the groove 123a penetrates the entire curved surface light panel 12 in the first direction x to form a force-unloading groove, and the groove 123b penetrates a portion of the curved surface light panel 12 in the first direction x. The present embodiment does not limit the penetration length of the groove 123 in the first aspect x. The first direction x intersects with the direction y in which the curved edge is located, and optionally, the first direction x and the direction y in which the curved edge is located are in a mutually perpendicular relationship. Fig. 7 is a front view of a curved lamp panel according to an embodiment of the present invention, as shown in fig. 7. The extending direction of the grooves is perpendicular to the curved edge 12a of the curved lamp panel 12. The curved lamp panel 12 is provided with the light sources 121 arranged in an array, and optionally, the grooves 123a and 123b are all arranged in a lamp panel gap area where the lines 124 connected with the light sources 121 are not arranged.
Alternatively, with continued reference to FIG. 3, the depth d1 of the groove 123 is 40% to 60% of the total thickness d2 of the initial lamp panel 12 'in a direction perpendicular to the plane of the initial lamp panel 12'. When the depth d1 of the groove 123 is smaller than 40% of the total thickness d2 of the initial lamp panel 12', the releasing effect of the groove 123 on the bending stress of the curved lamp panel is smaller, and when the depth d1 of the groove 123 is larger than 60% of the total thickness d2 of the initial lamp panel 12', the thickness (d 2-d 1) of the position where the groove 123 of the initial lamp panel 12 'is located is greatly reduced, when the initial lamp panel 12' is subjected to bending, the position where the groove 123 of the initial lamp panel 12 'is likely to be broken or broken, and in the embodiment, the thickness of the groove 123 is set to be 40% -60% of the thickness of the initial lamp panel 12', the bending stress of the curved lamp panel can be effectively dispersed, the curved lamp panel can be guaranteed to have higher strength, and the curved lamp panel is prevented from being broken.
Alternatively, with continued reference to fig. 2, in the first curved surface a, the width d3 of the groove 123 is 50% -60% of the width d4 of the panel gap region between adjacent light sources 121 in a direction parallel to the curved edge of the curved panel 12. When the groove 123 needs to penetrate the curved surface lamp panel 12 along the first direction x to form a force-unloading groove, the groove 123 has a strong stress releasing effect when forming the force-unloading groove penetrating the curved surface lamp panel 12, meanwhile, the mechanical strength of the curved surface lamp panel 12 is reduced, when forming the groove 123 and the force-unloading groove, if the width d3 of the groove 123 is smaller than 50% of the lamp panel gap area d4 between the adjacent light sources 121, the force-unloading groove or the stress-releasing effect of the groove is not large at the moment, but if the width d3 of the groove 123 is larger than 60% of the lamp panel gap area d4 between the adjacent light sources 121, the mechanical strength of the curved surface lamp panel 12 is weakened, the width of the groove 123 needs to be controlled to be 50% -60% of the lamp panel gap area d4 between the adjacent light sources 121, and the curved surface lamp panel 12 is prevented from being broken at the force-unloading groove due to the too wide groove 123, and the width d3 of the groove 123 is set to be 50% -60% of the lamp panel gap area d4 when the groove 123 is the force-unloading groove, so that the curved surface lamp panel 12 has higher strength.
Alternatively, with continued reference to fig. 2, in the first curved surface a, the width d3 of the groove 123 is 70% -80% of the width d4 of the panel gap region between adjacent light sources 121 in a direction parallel to the curved edge of the curved panel 12. When the groove 123 is used as the thinning area, the curved light panel 12 is not penetrated in the first direction x, and the depth of the groove 123 is low, so that the stress releasing effect is small to a certain extent, for example, when the width d3 of the groove 123 is smaller than 70% of the width d4 of the light panel gap area between the adjacent light sources 121, bending stress cannot be released in the thinning area, and the bonding pad and the light sources 121 cannot be protected, but when the width d3 of the thinning area formed by the groove 123 is larger than 80% of the width d4 of the light panel gap area between the adjacent light sources 121, the arrangement of the bonding pad on the curved light panel 12 and the welding of the light sources 121 may be affected, the width d3 of the groove 123 is set to 70% -80% of the width d4 of the light panel gap area between the adjacent light sources 121, and the width d3 of the groove 123 is properly widened to release the bending stress of the curved light panel 12 to a greater extent, and the bonding pad 122 and the light sources 121 are protected.
Alternatively, referring to fig. 8 and 9, fig. 8 is a schematic structural diagram of another initial lamp panel provided by the embodiment of the present invention, and fig. 9 is a schematic structural diagram of another curved lamp panel provided by the embodiment of the present invention, in a direction perpendicular to a plane where the initial lamp panel 12' is located, the grooves 123 penetrate through the front and back surfaces of the initial lamp panel 12', compared with the grooves which do not penetrate through the initial lamp panel 12', the grooves 123 shown in fig. 8 have a stronger stress releasing capability, and the grooves 123 can enhance the flexibility of the initial lamp panel 12', so that the initial lamp panel 12' can bend a set radian without generating a stronger bending stress. After the initial lamp panel 12' is bent, the curved lamp panel 12 shown in fig. 9 is formed, and when the groove 123 penetrates through the curved lamp panel 12, the bending stress of the curved lamp panel 12 is effectively reduced.
Optionally, with continued reference to fig. 5, in the first curved surface, a corresponding groove 123 is provided in the lamp panel gap region between any two light sources 121 in a direction parallel to the curved edge 12a of the curved lamp panel 12. Grooves 123 are formed in the lamp panel gap region between any two of the light sources 121 to further reduce bending stress of the curved lamp panel 12 and prevent stress concentration, thereby protecting the light sources 121.
Optionally, corresponding grooves 123 are disposed in the lamp panel gap region between any two adjacent light sources 121 along the direction parallel to the curved edge 12a of the curved lamp panel 12, so as to further reduce stress concentration of the curved lamp panel 12. Referring to fig. 8 and 9, at least one groove 123 may be disposed between two adjacent light sources 121, and fig. 8 and 9 illustrate a case where two grooves 123 are disposed between two adjacent light sources 121, in this embodiment, more grooves 123 may be disposed between two adjacent light sources 121, which is not limited in this embodiment.
Fig. 10 is a schematic view of a portion of a curved light panel according to an embodiment of the present invention, optionally, in a first curved surface, the groove 123 includes a first groove structure 1231 extending along a direction perpendicular to the curved edge 12a of the curved light panel 12, and a second groove structure 1232 disposed at two ends of the first groove structure 1231 and extending along a direction parallel to the curved edge 12a of the curved light panel 12; the first groove structure 1231 communicates with the second groove structure 1232, and the grooves 123 are disposed around the corresponding light sources 121.
The grooves 123 may be disposed corresponding to the light sources, referring to fig. 10, the grooves 123 are structures surrounding the corresponding light sources 121, and can isolate the whole light source 121 from the influence of stress when the curved light panel 12 is bent, so as to provide a good protection effect on the light sources 121, the first groove structures 1231 are perpendicular to the curved edge 12a, the second groove structures 1232 are parallel to the curved edge 12a, the first groove structures 1231 are perpendicular to the curved edge 12a and can effectively disperse bending stress in the bending direction, and optionally, the extension length of the first groove structures 1231 in the direction perpendicular to the curved edge 12a is greater than the extension length of the second groove structures 1232 in the direction parallel to the curved edge 12a, so as to be beneficial to dispersing the bending stress. The second groove structure 1232 may be matched with the first groove structure 1231 to disperse stress in a region surrounding the light source 121, so that bending stress of the curved lamp panel 12 does not act on the light source 121, especially, the second groove structure 1232 is a key structure surrounding the light source 121 to isolate the light source 121 in a planar island, and thus, a bonding pad of the corresponding light source 121 is well protected.
Referring to fig. 11, fig. 11 is a schematic diagram of a portion of a structure of another curved light panel provided by the embodiment of the invention, in which the light source 121 is shown to correspond to one groove 123, the light source 121 may be correspondingly provided with two grooves 123, the two grooves 123 are separately disposed on two sides of the light source 121 near the straight edge 12b and symmetrically disposed, each groove 123 includes a first groove structure 1231 extending along a direction perpendicular to the curved edge 12a of the curved light panel 12, and a second groove structure 1232 disposed on two ends of the first groove structure 1231 and extending along a direction parallel to the curved edge 12a of the curved light panel 12, so as to further disperse bending stress of the curved light panel 12 around the light source 121, thereby protecting the light source 121. The plurality of light sources 121 in the curved light panel 12 may be provided with symmetrically arranged grooves 123 shown in fig. 10, or all the light sources 121 on the curved light panel 12 may be provided with symmetrically arranged grooves 123 shown in fig. 10, referring to fig. 12, fig. 12 is a front view of another curved light panel provided in an embodiment of the present invention, and each light source 121 in the curved light panel 12 shown in fig. 12 is correspondingly provided with symmetrically arranged grooves 123, so as to enhance protection of each light source 121 on the curved light panel 12.
As can be seen from fig. 12, two grooves 123 comprising a first groove structure 1231 and a second groove structure 1232 are provided between two adjacent light sources 121. In this embodiment, two adjacent grooves 123 are combined to form a groove structure 123 shown in fig. 13, fig. 13 is a front view of another curved lamp panel provided in this embodiment, two adjacent grooves 123 can be combined to form an i-shaped groove 123, so that the same stress releasing effect as that of fig. 12 is achieved, the manufacturing process is further saved, and the production process of the curved lamp panel 12 is accelerated.
Fig. 14 is a schematic view of a portion of a structure of another curved light panel according to an embodiment of the present invention, and optionally, in a first curved surface, a groove 123 is an annular structure with a notch; the grooves 123 are arranged around the corresponding light sources 121, and the grooves 123 with the annular structures provided with notches are further arranged to surround the light sources, so that the light sources 121 on the curved lamp panel 12 are further protected. Alternatively, the notch of the annular structure of the groove 123 is disposed at a side close to the curved edge 12a, so that the groove 123 is not broken at a groove portion perpendicular to one side of the curved edge 12a, and the stress in the bending direction can be effectively dispersed.
The embodiment of the invention also provides a display device. Fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention, where, as shown in fig. 15, the display device according to the embodiment of the present invention includes: the curved backlight module 1 and the display panel 2 positioned on the light emitting side of the curved backlight module 1 according to any embodiment of the present invention. The display device may be a mobile phone as shown in fig. 15, or may be a computer, a television, an intelligent wearable device, etc., where the display device may be a vehicle-mounted display device, and is installed in a vehicle to implement a large-sized curved screen, and present a wider display viewing angle.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (7)
1. The utility model provides a curved surface backlight unit which characterized in that includes:
a curved backboard and a curved lamp panel;
the curved backboard comprises a first curved surface and a second curved surface which are opposite; the first curved surface is arranged close to the light emitting side of the curved surface backlight module; the curved surface lamp panel is formed by bending an initial lamp panel, and a plurality of light sources which are arranged in a plurality of rows and columns in an array manner on the curved surface lamp panel are fixed on the front surface of the curved surface lamp panel through bonding pads; the back surface of the curved surface lamp panel is close to the first curved surface of the curved surface backboard;
the front surface of the curved surface lamp panel is provided with at least one groove, the groove is arranged in a lamp panel gap area between adjacent light sources, the lamp panel gap area is a lamp panel area between the light sources arranged on the curved surface lamp panel, the groove is arranged in an area around a bonding pad of the light sources, and the curved surface lamp panel is of an integrated bending and forming structure provided with a circuit connected with the light sources; the groove is arranged in the gap area of the lamp panel, on which the circuit connected with the light source is not arranged, and the groove and the curved lamp panel are of an integrated structure;
in the direction perpendicular to the plane of the initial lamp panel, the groove at least partially penetrates through the initial lamp panel;
in the first curved surface, corresponding grooves are formed in a lamp panel gap area between any two light sources along the direction parallel to the curved edge of the curved surface lamp panel;
the groove comprises a first groove structure extending along the direction perpendicular to the curve edge of the curved surface lamp panel and a second groove structure arranged at two ends of the first groove structure and extending along the direction parallel to the curve edge of the curved surface lamp panel; the first groove structure is communicated with the second groove structure, and the grooves are arranged around the corresponding light sources;
or in the first curved surface, the groove is of an annular structure provided with a notch, and the groove is arranged around the corresponding light source.
2. The curved backlight module of claim 1, wherein,
in the first curved surface, the groove at least partially penetrates through the curved surface lamp panel along a first direction; the first direction intersects with the direction in which the curved edge of the curved lamp panel is located.
3. The curved backlight module according to claim 2, wherein,
in the direction perpendicular to the plane of the initial lamp panel, the depth of the groove is 40% -60% of the total thickness of the initial lamp panel.
4. The curved backlight module according to claim 3, wherein,
in the first curved surface, the width of the groove is 50% -60% of the width of the lamp panel gap area between adjacent light sources along the direction parallel to the curved edge of the curved surface lamp panel.
5. The curved backlight module according to claim 3, wherein,
in the first curved surface, the width of the groove is 70% -80% of the width of the lamp panel gap area between adjacent light sources along the direction parallel to the curved edge of the curved surface lamp panel.
6. The curved backlight module according to claim 2, wherein,
in the direction perpendicular to the plane of the initial lamp panel, the grooves penetrate through the front surface and the back surface of the initial lamp panel.
7. A display device comprising the curved backlight module of any one of claims 1-6 and a display panel positioned on the light-emitting side of the curved backlight module.
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| CN110534020B (en) * | 2019-09-30 | 2021-09-21 | 厦门天马微电子有限公司 | Lamp panel, backlight module and display device |
| CN110716351A (en) * | 2019-10-31 | 2020-01-21 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN111258115A (en) * | 2020-01-21 | 2020-06-09 | 深圳市隆利科技股份有限公司 | Flexible direct type backlight device and display equipment |
| CN112150929A (en) * | 2020-09-27 | 2020-12-29 | 武汉华星光电半导体显示技术有限公司 | Backboard and display device |
| CN112285974B (en) * | 2020-10-30 | 2021-12-03 | 惠州市华星光电技术有限公司 | Backlight module and display device |
| CN116203756A (en) * | 2021-11-30 | 2023-06-02 | 苏州佳世达电通有限公司 | Light source module for display and display |
| CN114236904B (en) * | 2021-12-10 | 2022-10-11 | 重庆惠科金渝光电科技有限公司 | Backlight module and liquid crystal display device |
| CN114415409B (en) * | 2022-01-26 | 2024-02-02 | 武汉华星光电技术有限公司 | Display module and display device |
| CN115373179B (en) * | 2022-08-11 | 2024-02-02 | 广州华星光电半导体显示技术有限公司 | Backlight module and display device with same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206802860U (en) * | 2017-04-14 | 2017-12-26 | 深圳Tcl新技术有限公司 | Backlight module |
| CN108227308A (en) * | 2018-01-31 | 2018-06-29 | 惠州市华星光电技术有限公司 | Backlight module and display device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833902B (en) * | 2009-03-11 | 2012-11-07 | 元太科技工业股份有限公司 | Flexible display |
| CN104464524A (en) * | 2015-01-06 | 2015-03-25 | 京东方科技集团股份有限公司 | Display substrate, display panel and display device |
| CN108400138B (en) * | 2016-12-28 | 2020-11-03 | 上海天马有机发光显示技术有限公司 | Flexible display panel, display device and manufacturing method of flexible display panel |
| CN106873073B (en) * | 2017-04-28 | 2020-07-07 | 福州京东方光电科技有限公司 | Light guide plate, preparation method thereof and backlight module |
| CN108155218A (en) * | 2017-12-29 | 2018-06-12 | 云谷（固安）科技有限公司 | Flexible display screen |
| CN208621882U (en) * | 2018-08-24 | 2019-03-19 | 信利半导体有限公司 | A kind of down straight aphototropism mode set |
| CN109215513A (en) * | 2018-11-23 | 2019-01-15 | 深圳市光祥科技股份有限公司 | LED display unit |
| CN109387981B (en) * | 2018-12-20 | 2021-07-06 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display panel |
-
2019
- 2019-06-28 CN CN201910580523.0A patent/CN110133917B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206802860U (en) * | 2017-04-14 | 2017-12-26 | 深圳Tcl新技术有限公司 | Backlight module |
| CN108227308A (en) * | 2018-01-31 | 2018-06-29 | 惠州市华星光电技术有限公司 | Backlight module and display device |
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