CN116434651A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN116434651A CN116434651A CN202310481557.0A CN202310481557A CN116434651A CN 116434651 A CN116434651 A CN 116434651A CN 202310481557 A CN202310481557 A CN 202310481557A CN 116434651 A CN116434651 A CN 116434651A
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- Prior art keywords
- lamp
- light
- guide plate
- light guide
- backlight module
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- 239000011324 bead Substances 0.000 claims abstract description 105
- 239000011049 pearl Substances 0.000 claims abstract 6
- 230000001154 acute effect Effects 0.000 claims description 5
- 235000009537 plain noodles Nutrition 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 239000012788 optical film Substances 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
Images
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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- 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
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention discloses a backlight module and display equipment. Wherein, backlight unit includes the lamp plate and locates a plurality of lamp pearls on the lamp plate, and backlight unit still includes the light guide plate, and one side of lamp plate is located to the light guide plate, and one side that the light guide plate is close to the lamp plate is equipped with a plurality of bumps, has seted up a plurality of grooves of dodging on the light guide plate, and each lamp pearl corresponds to locate one dodges the inslot, and the exit face of lamp pearl sets up relatively with the lateral wall of dodging the groove. According to the technical scheme, the light emitted by the lamp beads is lateral, the light is directly emitted into the light guide plate through the side wall of the avoidance groove, and then is totally reflected through the convex points on the side, close to the lamp plate, of the light guide plate, so that the emergent direction of the light is changed, the light is emitted towards the direction away from the lamp plate and is in a divergent state, the light mixing distance between the lamp beads and the optical film above the lamp beads can be avoided, and the backlight module is easy to achieve a light and thin effect.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a backlight module and a display device using the backlight module.
Background
At present, the mainstream display adopts Mini LED backlight technology, and benefits from the partition control of Mini LED backlight, so that the display can achieve higher contrast and picture uniformity, but in terms of thickness, because the traditional Mini LED backlight module uses direct type backlight, in order to avoid lamp shadows, enough light mixing distance is reserved between the lamp beads and the membrane to ensure normal display of pictures, and therefore, the Mini LED backlight module is relatively thick.
Disclosure of Invention
The invention provides a backlight module, which aims to reduce the light mixing distance between a lamp bead and a diaphragm.
In order to achieve the above purpose, the backlight module provided by the invention comprises a lamp panel and a plurality of lamp beads arranged on the lamp panel, the backlight module further comprises a light guide plate, the light guide plate is arranged on one side of the lamp panel, a plurality of radiating parts are arranged on one side of the light guide plate, which is close to the lamp panel, a plurality of avoidance grooves are formed in the light guide plate, each lamp bead is correspondingly arranged in one avoidance groove, and the light emitting surface of the lamp bead is arranged opposite to the side wall of the avoidance groove.
In an embodiment, the avoidance groove is a right-angled trapezoid groove, and an opening of the avoidance groove is gradually increased in a direction from approaching the lamp panel to separating from the lamp panel;
the avoidance groove is provided with a first side wall and a second side wall which are oppositely arranged, the first side wall is perpendicular to the lamp panel, and the second side wall and the lamp panel are arranged at an acute angle; the light emitting surface of the lamp bead is opposite to the first side wall.
In an embodiment, the light emitting surface of the lamp bead is attached to the first side wall.
In an embodiment, a space is provided between the lamp bead and the second sidewall.
In an embodiment, a side of the light bead facing away from the light panel is flush with a side of the light guide plate facing away from the light panel.
In an embodiment, a surface of the light panel facing the light guide plate is a rectangular surface, and the light emitting surface of the light bead is perpendicular to a diagonal line of the rectangular surface.
In an embodiment, the light panels are provided with at least two light panels, two adjacent light panels are spliced and provided with splicing lines, the light beads on one of the two adjacent light panels and the light beads on the other light panel are distributed in a central symmetry manner with respect to the center of the splicing lines, and the light emitting surface of each light bead is close to the splicing lines.
In an embodiment, the lamp panel is provided with a first area and a second area, the first area and the second area are symmetrically arranged about a diagonal line of the rectangular surface, the lamp beads comprise a first lamp bead arranged on the first area and a second lamp bead arranged on the second area, and light emitting surfaces of the first lamp bead and the second lamp bead are symmetrically arranged about a diagonal line of the rectangular surface and face the diagonal line.
In an embodiment, the backlight module further includes a light homogenizing film, and the light homogenizing film is carried on a side of the light guide plate, which is away from the lamp panel.
The invention also provides display equipment which is characterized by comprising a display panel and the backlight module, wherein the display panel is arranged on the light emitting side of the backlight module.
According to the technical scheme, the light guide plate is arranged on one side of the lamp panel, the plurality of scattering parts are arranged on one side of the light guide plate, which is close to the lamp panel, the plurality of avoidance grooves for accommodating the lamp beads are formed in the light guide plate, the light emitting surfaces of the lamp beads are opposite to the side walls of the avoidance grooves, so that light emitted by the lamp beads is in a lateral direction, and is directly emitted into the light guide plate through the side walls of the avoidance grooves, and after being totally reflected on one side of the light guide plate, which is close to the lamp panel, the light after being totally reflected is scattered by the scattering parts, so that the light emitting direction is changed, the light is emitted towards a direction deviating from the lamp panel, and is in a divergent state, and therefore, a light mixing distance between the lamp beads and an optical film above the lamp beads is avoided, and the backlight module is easy to realize a light and thin effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram illustrating an assembly structure of a light panel, a light bead and a light guide plate in a backlight module according to an embodiment of the invention;
FIG. 2 is a schematic diagram illustrating an assembly structure of a light panel, a light bead, a light guide plate and a light homogenizing film in a backlight module according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating an exemplary arrangement of light beads on a light panel in a backlight module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of another example of an arrangement of light beads on a light panel in a backlight module according to an embodiment of the invention;
fig. 5 is a schematic diagram of an arrangement structure of a lamp bead on a lamp panel in a backlight module according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of an embodiment of a display device according to the second embodiment of the invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 100 | Lamp panel | 101 | |
| 102 | |
200 | |
| 210 | |
220 | |
| 300 | |
310 | |
| 311 | First side wall | 312 | A |
| 400 | |
500 | Display panel |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Embodiment one:
the invention provides a backlight module.
In the embodiment of the invention, as shown in fig. 1 or fig. 2, the backlight module comprises a lamp panel 100 and a plurality of lamp beads 200 arranged on the lamp panel 100, the backlight module further comprises a light guide plate 300, the light guide plate 300 is arranged on one side of the lamp panel 100, a plurality of scattering parts are arranged on one side of the light guide plate 300 close to the lamp panel 100, a plurality of avoidance grooves 310 are formed in the light guide plate 300, each lamp bead 200 is correspondingly arranged in one avoidance groove 310, and the light emitting surface of the lamp bead 200 is opposite to the side wall of the avoidance groove 310.
One side of the lamp panel 100 is provided with a plurality of lamp beads 200, and the lamp beads 200 serve as a light source for providing light. The backlight module further comprises a light guide plate 300, wherein the light guide plate 300 is arranged on one side of the lamp panel 100, and can be attached to the lamp panel 100 or can be spaced from the lamp panel 100 by a certain distance. Because the lamp bead 200 and the light guide plate 300 are disposed on one side of the lamp plate 100, in order to avoid interference and reduce the thickness of the backlight module, the light guide plate 300 may have a avoiding groove 310 for avoiding the lamp bead 200, i.e. the lamp bead 200 is disposed in the avoiding groove 310, thereby avoiding the risk of increasing the thickness of the entire backlight module due to the increase of the light guide plate 300. In addition, in the technical scheme of the invention, the light emergent surface of the lamp bead 200 is opposite to the side wall of the avoidance groove 310, so that the lamp bead 200 is laterally emergent instead of the top emergent, and a plurality of protruding points are arranged on the side, which is close to the light guide plate 300, of the lamp bead 200, so that light emitted by the lamp bead 200 firstly enters the light guide plate 300, is totally reflected by the side, which is close to the lamp plate 100, of the light guide plate 300, and is scattered by the scattering part, so that light is more divergent and emitted in a direction away from the lamp plate 100, and further, the side-in type emergent mode is converted into direct type emergent light, so that the emergent light has an effect equal to that of the direct type backlight module. Specifically, the scattering portion may be a convex structure or a concave structure protruding from one side of the light guide plate 300 near the lamp panel 100, and a longitudinal section of the convex structure or the concave structure may be triangular, trapezoidal, or the like.
Specifically, the avoidance groove 310 may be a trapezoid groove, a rectangular groove, a V-shaped groove or the like, so long as light emitted from the lamp bead 200 can enter the light guide plate 300 through the side wall of the avoidance groove 310, and after total reflection in the light guide plate 300, divergent light can be emitted in a direction away from the lamp plate 100. In addition, the lamp bead 200 may be attached to one side wall of the avoidance groove 310 when being disposed in the avoidance groove 310, or may be attached to both opposite side walls of the avoidance groove 310, or may not be attached to both opposite side walls of the lamp bead 200 and the avoidance groove 310. It can be understood that when the light emitting surface of the lamp bead 200 is attached to the side wall of the avoidance groove 310, a gap is avoided between the light emitting surface of the lamp bead 200 and the avoidance groove 310, so that a part of light rays of the lamp bead 200 do not enter the light guide plate 300 through the side wall of the avoidance groove 310, but are directly emitted into the gap between the light emitting surface of the lamp bead 200 and the side wall of the avoidance groove 310, so that the light rays corresponding to the position are too bright.
According to the technical scheme, the light guide plate 300 is arranged on one side of the lamp panel 100, the plurality of scattering parts are arranged on one side of the light guide plate 300 close to the lamp panel 100, the plurality of avoidance grooves 310 for accommodating the lamp beads 200 are formed in the light guide plate 300, the light emitting surfaces of the lamp beads 200 are opposite to the side walls of the avoidance grooves 310, so that light emitted by the lamp beads 200 is sideways, and is directly emitted into the light guide plate 300 through the side walls of the avoidance grooves 310, and then is totally reflected on one side of the light guide plate 300 close to the lamp panel 100, and then the totally reflected light is scattered through the scattering parts to achieve the scattering effect, so that the light emitting direction is changed, the light is emitted in the direction deviating from the lamp panel 100 and is in a divergent state, and therefore the light mixing distance between the lamp beads 200 and the optical films above the lamp beads 200 can be avoided, and the backlight module is easy to realize the light and thin effect.
Further, as shown in fig. 1 or fig. 2, the avoidance groove 310 is a rectangular trapezoid groove, and the opening of the avoidance groove 310 gradually increases in the direction from the lamp panel 100 to the lamp panel 100; the avoidance groove 310 is provided with a first side wall 311 and a second side wall 312 which are oppositely arranged, the first side wall 311 is perpendicular to the lamp panel 100, and the second side wall 312 is arranged at an acute angle with the lamp panel 100; the light emitting surface of the lamp bead 200 is disposed opposite to the first sidewall 311.
The avoidance groove 310 is a right-angled trapezoid groove, and one of two opposite side walls of the avoidance groove 310 is perpendicular to the lamp panel 100, and the other one of the two opposite side walls is arranged at an included angle with the lamp panel 100. In this example, the side wall of the vertical lamp panel 100 is defined as the first side wall 311, the side wall disposed at an acute angle with the lamp panel 100 is the second side wall 312, through making the opening of the avoidance groove 310 gradually increase in the direction from the lamp panel 100 to the far away from the lamp panel 100, and the light emitting surface of the lamp bead 200 is opposite to the first side wall 311, after the light emitted by the lamp bead 200 passes through the light guiding effect of the light guiding plate 300, a part of light can be emitted through the second side wall 312 of the avoidance groove 310 adjacent in the light direction, and because the second side wall 312 is disposed at an acute angle, the light emitted through the second side wall 312 of the adjacent avoidance groove 310 can make up the gap between the lamp bead 200 in the adjacent avoidance groove 310 and the second side wall 312 of the adjacent avoidance groove 310, so as to reduce the shadow, and on the other hand, the light emitting direction is still ensured to have a trend towards the direction away from the lamp panel 100, so that more light can be emitted in the direction far away from the lamp panel 100.
Further, as shown in fig. 1 or fig. 2, the light emitting surface of the lamp bead 200 is attached to the first sidewall 311.
Through laminating the light-emitting surface of lamp pearl 200 with first lateral wall 311, then make no gap between the light-emitting surface of lamp pearl 200 and the first lateral wall 311 to the almost whole light that sends out of lamp pearl 200 gets into light guide plate 300 through first lateral wall 311 and carries out total reflection, then changes the light-emitting direction through total reflection, makes light go out towards the direction of keeping away from lamp plate 100, avoids light to directly be penetrated out by the gap department between the light-emitting surface of lamp pearl 200 and the first lateral wall 311 and makes backlight unit correspond the position light intensity of here too big.
Further, as shown in fig. 1 or fig. 2, a space is provided between the lamp bead 200 and the second sidewall 312.
By arranging the space between the lamp bead 200 and the second side wall 312, on one hand, the assembly of the lamp bead 200 and the light guide plate 300 is more convenient, and the risk of scratching between the lamp bead 200 and the light guide plate 300 is reduced; on the other hand, the lamp bead 200 is prevented from shielding the light emitted by the second side wall 312, so that the light can better shield the lamp bead 200 and avoid illegal light areas of the groove 310, the risk of lamp shadow is reduced, and a good light emitting effect is realized.
Further, as shown in fig. 1 or fig. 2, a side of the light bead 200 facing away from the light panel 100 is flush with a side of the light guide plate 300 facing away from the light panel 100.
Through deviating from one side of lamp pearl 200 and light guide plate 300 and deviating from one side parallel and level setting of lamp plate 100, can make the play plain noodles of lamp pearl 200 and the lateral wall parallel and level of dodging groove 310 of light guide plate 300 on the one hand for the light that lamp pearl 200 sent out gets into light guide plate 300 through the lateral wall of dodging groove 310 of light guide plate 300 as far as possible in, changes light outgoing direction through the leaded light effect of light guide plate 300, makes the light go out more even light towards the direction that deviates from lamp plate 100. On the other hand, the light and thin effect of the whole backlight module is difficult to realize due to the fact that the light guide plate 300 is prevented from being too thick by arranging the side, deviating from the lamp panel 100, of the lamp beads 200 and the side, deviating from the lamp panel 100, of the light guide plate 300 in a flush manner.
Further, as shown in fig. 3 to 5, the surface of the light panel 100 facing the light guide plate 300 is a rectangular surface, and the light emitting surface of the light bead 200 is perpendicular to a diagonal line of the rectangular surface.
Through setting up the diagonal of the perpendicular rectangle of the play plain noodles of lamp pearl 200, then can take into account more directions when making lamp pearl 200 give out light, can all be followed length direction, width direction and the diagonal direction of rectangle face and all can be penetrated light to reduce the condition of shadow, guarantee the light-emitting effect of preferred. Specifically, when the plurality of lamp beads 200 are provided, the light-emitting surfaces of all the lamp beads 200 may be disposed in the same direction, or the light-emitting surfaces of some of the lamp beads 200 may be disposed in a direction perpendicular to a diagonal, and the light-emitting surfaces of other part of the lamp beads 200 may be disposed in another direction perpendicular to the diagonal, i.e. the light-emitting surfaces of the two parts of the lamp beads 200 are opposite.
In an example, as shown in fig. 4, at least two lamp panels 100 are provided, two adjacent lamp panels 100 are spliced and formed with a splice line, and the lamp beads 200 on one of the two adjacent lamp panels 100 and the lamp beads 200 on the other lamp panel 100 are distributed symmetrically about the center of the splice line, and the light emitting surface of each lamp bead 200 is close to the splice line.
The lamp panel 100 may be provided with two, three or more pieces. Taking two lamp panels 100 as an example, by arranging two lamp panels 100, and splicing the two lamp panels 100, the two lamp panels 100 are symmetrically distributed along the center of the splicing line, so that the light path directions on the two lamp panels 100 are opposite, and the dark shadow generated at the joint of the lamp panels 100 can be effectively avoided. In addition, by splicing the two lamp panels 100 and distributing the two lamp panels in a central symmetry manner about the center of the splice line, the two lamp panels 100 can be the same lamp panel 100 in the manufacturing process, and the light emitting surfaces of the lamp beads 200 can be arranged in the same direction in the manufacturing process, and only the two lamp panels 100 are required to be installed in a central symmetry manner in the installation process, so that the manufacturing process is simplified.
In yet another example, as shown in fig. 5, the lamp panel 100 is provided with one lamp panel 100, the lamp panel 100 has a first area 101 and a second area 102, the first area 101 and the second area 102 are symmetrically arranged about a diagonal line of the rectangular surface, and the lamp beads 200 include a first lamp bead 210 disposed on the first area 101 and a second lamp bead 220 disposed on the second area 102, and light emitting surfaces of the first lamp bead 210 and the second lamp bead 220 are symmetrically arranged about a diagonal line of the rectangular surface and are both directed to the diagonal line.
In a lamp panel 100, by dividing the lamp panel 100 into a first area 101 and a second area 102 which are symmetrically arranged about a diagonal line, the light emitting surface of a first lamp bead 210 arranged on the first area 101 and the light emitting surface of a second lamp bead 220 arranged on the second area 102 are perpendicular to the diagonal line and are symmetrically arranged about the diagonal line, so that the light rays emitted by the first lamp bead 210 and the second lamp bead 220 can be mutually supplemented on the same lamp panel 100, and the occurrence of dark shadows is reduced. So set up, the user can only install a lamp plate 100 can, need not two lamp plates 100 concatenation to simplified backlight unit's installation step, and avoided appearing the condition that appears dark shadow or light leak in adjacent two lamp plates 100 department because of the influence of mounting process.
Further, as shown in fig. 2, the backlight module further includes a light homogenizing film 400, and the light homogenizing film 400 is mounted on a side of the light guide plate 300 away from the lamp panel 100.
Through still carrying on even light film 400 in the side that light guide plate 300 deviates from lamp plate 100, then the light that goes out through light guide plate 300 can further make the light more even through even light film 400's processing again to the effect that the realization backlight unit goes out light evenly. It can be appreciated that, compared with the conventional scheme of supporting the diaphragm by the bracket to scratch the diaphragm easily, when the light-homogenizing film 400 in this example is disposed on the side of the light guide plate 300 away from the lamp panel 100, the light-homogenizing film 400 is supported by the light guide plate 300, so that the base area of the light guide plate 300 and the light-homogenizing film 400 is larger, on the one hand, the light-homogenizing film 400 can be supported more stably, on the other hand, the risk that the light-homogenizing film 400 is scratched can be reduced, so that the light-homogenizing film 400 is applicable to a thinner light-homogenizing film 400, the thickness of the light-homogenizing film 400 is reduced, and the thickness of the whole backlight module can be reduced.
The backlight module further comprises a back plate, the back plate comprises a bottom plate and side plates, the lamp plate 100 is arranged on the bottom plate, a plurality of lamp beads 200 which are arranged in a matrix are arranged on the lamp plate 100, so that the back plate has the protection effect on the lamp plate 100, the lamp beads 200 and the light guide plate 300, and the heat dissipation effect on the lamp plate 100 can be enhanced.
Embodiment two:
the present invention also proposes a display device, as shown in fig. 6, which includes a display panel 500 and a backlight module, and the specific structure of the backlight module refers to the above embodiment. The display panel 500 is disposed on the light emitting side of the backlight module.
It can be understood that, when the backlight module includes the light homogenizing film 400, the display panel 500 is disposed on a side of the light homogenizing film 400 facing away from the lamp panel 100. When the backlight module does not include the light homogenizing film 400, the display panel 500 is disposed on a side of the light guide plate 300 facing away from the lamp panel 100. By arranging the display panel 500 on the light emitting side of the backlight module, the light emitted from the backlight module can enter the display panel 500, so that the picture displayed on the display panel 500 has a certain brightness.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. The utility model provides a backlight unit, includes the lamp plate and locates a plurality of lamp pearls on the lamp plate, its characterized in that, backlight unit still includes the light guide plate, the light guide plate is located one side of lamp plate, the light guide plate is close to one side of lamp plate is equipped with a plurality of scattering parts, a plurality of grooves of dodging have been seted up on the light guide plate, each the lamp pearl corresponds and locates one dodge the inslot, the play plain noodles of lamp pearl with dodge the lateral wall in groove sets up relatively.
2. The backlight module according to claim 1, wherein the avoidance groove is a right-angled trapezoid groove, and an opening of the avoidance groove is gradually increased in a direction from approaching the lamp panel to separating from the lamp panel;
the avoidance groove is provided with a first side wall and a second side wall which are oppositely arranged, the first side wall is perpendicular to the lamp panel, and the second side wall and the lamp panel are arranged at an acute angle; the light emitting surface of the lamp bead is opposite to the first side wall.
3. The backlight module of claim 2, wherein the light emitting surface of the lamp bead is attached to the first sidewall.
4. The backlight module according to claim 2, wherein a space is provided between the lamp beads and the second side wall.
5. The backlight module of claim 1, wherein a side of the light beads facing away from the light panel is flush with a side of the light guide plate facing away from the light panel.
6. The backlight module according to any one of claims 1 to 5, wherein a surface of the lamp panel facing the light guide plate is a rectangular surface, and the light emitting surface of the lamp bead is perpendicular to a diagonal line of the rectangular surface.
7. The backlight module according to claim 6, wherein at least two lamp panels are provided, two adjacent lamp panels are spliced and form a splice line, the lamp beads on one of the two adjacent lamp panels and the lamp beads on the other of the two adjacent lamp panels are distributed in a central symmetry manner with respect to the center of the splice line, and the light emitting surface of each lamp bead is close to the splice line.
8. The backlight module of claim 6, wherein the lamp panel has a first area and a second area, the first area and the second area are symmetrically disposed about a diagonal of the rectangular surface, the lamp beads include a first lamp bead disposed on the first area and a second lamp bead disposed on the second area, and light emitting surfaces of the first lamp bead and the second lamp bead are symmetrically disposed about a diagonal of the rectangular surface and face the diagonal.
9. The backlight module of claim 1, further comprising a light homogenizing film carried on a side of the light guide plate facing away from the lamp panel.
10. A display device comprising a display panel and a backlight module according to any one of claims 1 to 9, the display panel being arranged on the light exit side of the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310481557.0A CN116434651B (en) | 2023-04-27 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310481557.0A CN116434651B (en) | 2023-04-27 | Backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116434651A true CN116434651A (en) | 2023-07-14 |
| CN116434651B CN116434651B (en) | 2024-04-26 |
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| US20200142258A1 (en) * | 2017-10-13 | 2020-05-07 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display device and backlight module thereof |
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