CN212341648U - Direct type backlight module and display equipment - Google Patents
Direct type backlight module and display equipment Download PDFInfo
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- CN212341648U CN212341648U CN202021373037.6U CN202021373037U CN212341648U CN 212341648 U CN212341648 U CN 212341648U CN 202021373037 U CN202021373037 U CN 202021373037U CN 212341648 U CN212341648 U CN 212341648U
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Abstract
The utility model discloses a direct type backlight module and display equipment, wherein, the direct type backlight module comprises a back plate, a light guide piece, an optical diaphragm and a light source, and the back plate is provided with a groove; the light guide part comprises a light guide part and a light emitting part which are connected, the light guide part is attached to the inner side wall of the groove, the light emitting part is arranged at the outer edge of the opening of the groove, and a reflector plate is attached to the surface of the light guide part facing the back plate and/or the surface of the light guide part departing from the back plate; the optical film is connected to the surface of the light-emitting part, which is far away from the back plate, and is arranged opposite to the bottom wall of the groove; the light source is arranged on the bottom wall of the groove, and the light part of the light source is conducted to the light emergent part through the light guide part and is emitted to the optical film. The utility model discloses technical scheme's straight following formula backlight unit can solve edge shadow and the problem of support stability.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a straight following formula backlight unit and display device.
Background
At present, the ultra-narrow frame is the mainstream design direction in the design of TV backlight, however the design of ultra-narrow frame can make the frame to panel bearing area all around reduce, and frame reliability greatly reduced so in order to guarantee the bearing capacity of counter panel, under the definite condition of panel display size, the design of narrow frame has been restricted. In addition, the non-display area is continuously reduced by the face frame, the display area is enlarged, great challenge is brought to backlight design, and the problem of display shadow is easy to occur when the frame is small.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a direct-type backlight module, which is highly reliable and has a frame with a shadow formed therein.
In order to achieve the above object, an embodiment of the present invention provides a direct type backlight module, including:
a back plate formed with a groove;
the light guide part comprises a light guide part and a light emergent part which are connected, the light guide part is attached to the inner side wall of the groove, the light emergent part is arranged at the outer edge of the opening of the groove, and a reflector plate is attached to the surface of the light guide part facing the back plate and/or the surface of the light guide part departing from the back plate;
the optical diaphragm is connected to the surface, deviating from the back plate, of the light emergent part and is arranged opposite to the bottom wall of the groove; and the number of the first and second groups,
the light source is arranged on the bottom wall of the groove, and the light part of the light source is conducted to the light emergent part through the light guide part and is emitted to the optical film.
In an optional embodiment, the back plate includes a bottom plate, a side plate connected to a periphery of the bottom plate, and a bending plate, where the bending plate is formed by bending and extending an end of the side plate away from the bottom plate, the side plate and the bottom plate enclose to form the groove, the optical film is connected to a surface of the bending plate away from the bottom plate, and the light emergent portion is sandwiched between the bending plate and the optical film.
In an alternative embodiment, the surface of the light guide part facing the back plate is provided with the reflective sheet, the reflective sheet is defined as a first reflective sheet, and in the extending direction of the side plates, the length of the first reflective sheet is greater than the length of the light guide part.
In an alternative embodiment, the first reflective sheet has the same length as the side plate in the extending direction of the side plate.
In an alternative embodiment, the surface of the light guide part facing away from the back plate is provided with the reflective sheet, and the reflective sheet is defined as a second reflective sheet and is in the extending direction of the side plate;
the length of the second reflector plate is the same as that of the light guide part; or the like, or, alternatively,
the length of the second reflector plate is greater than that of the light guide part, the second reflector plate is provided with a light hole, and the light hole is located at one end, far away from the light emergent part, of the light guide part.
In an optional embodiment, when the second reflector has the light hole, an included angle between a connecting line between the edge of the light hole and the light source and the bottom plate is greater than or equal to 25 ° and less than or equal to 30 °.
In an optional embodiment, a third reflective sheet is attached to the bottom wall of the groove, and the third reflective sheet is provided with an installation hole exposing the light source.
In an alternative embodiment, the light guide part has a thickness perpendicular to the extending direction of the side plates in a range of 2mm to 5 mm.
In an alternative embodiment, an end of the light emergent portion away from the light guide portion is flush with the outer periphery of the bent plate.
The utility model discloses provide a display device again, including straight following formula backlight unit and with the display panel that straight following formula backlight unit connects, straight following formula backlight unit is as above straight following formula backlight unit.
The utility model discloses among the technical scheme, straight following formula backlight unit includes backplate and leaded light spare, and the backplate is formed with the recess, and leaded light spare is including the light guide part and the light-emitting part that are connected, and light guide part locates the inside wall of recess, the opening outside border of recess is located to light-emitting part, and the surface of light-emitting part is located to the optics diaphragm pressure and sets up relatively with the recess diapire, and the recess diapire is located to the light source. When the light source emits light, most of the light is emitted towards the direction of the optical film, so that a uniform surface light source which is a display area is formed; meanwhile, part of the light rays can be emitted to the light guide part, and the reflector plate is arranged on at least one side surface of the light guide part, so that the light rays emitted from the end part of the light guide part are totally reflected in the light guide part, gradually reach the light emitting part and are emitted to the optical film from the light emitting part. The direct type backlight module with the structure can enable the edge position of the back plate for supporting to emit light, and reduce the occurrence of edge shadows; and the display area of the direct type backlight module is increased, so that the width of the edge of the back plate for supporting can be designed to be larger while a certain display area is ensured, the reliability of the back plate for supporting is improved, the back plate is displayed as a narrow frame in appearance, and the high reliability of the design of the narrow frame of the direct type backlight module is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a partial cross-sectional view of an embodiment of a direct-type backlight module of the present invention;
FIG. 2 is a schematic view of a light guide member in the direct-type backlight module shown in FIG. 1.
Reference numerals:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Direct |
50 | |
| 10 | |
71 | |
| 10a | Groove | 73 | Second reflecting sheet |
| 11 | Base plate | 731 | Light hole |
| 13 | |
75 | |
| 15 | |
90 | |
| 30 | |
91 | |
| 31 | |
93 | Lens and |
| 33 | Light emitting part |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a straight following formula backlight unit 100.
Referring to fig. 1 and fig. 2, in an embodiment of the present invention, a direct type backlight module 100 includes:
a back plate 10, the back plate 10 being formed with a groove 10 a;
the light guide member 30 comprises a light guide part 31 and a light emergent part 33 which are connected, the light guide part 31 is attached to the inner side wall of the groove 10a, the light emergent part 33 is arranged at the outer edge of the opening of the groove 10a, and a reflector plate is attached to the surface of the light guide part 31 facing the back plate 10 and/or the surface of the light guide part 31 facing away from the back plate 10;
an optical film 50, wherein the optical film 50 is connected to the surface of the light emergent portion 33 departing from the back plate 10, and is arranged opposite to the bottom wall of the groove 10 a; and the number of the first and second groups,
and the light source 90 is arranged on the bottom wall of the groove 10a, and the light part of the light source 90 is transmitted to the light emergent part 33 through the light guide part 31 and is emitted to the optical film 50.
In this embodiment, the back plate 10 is a plate-shaped structure, and the middle portion thereof is bent downward to form the groove 10a, so that the structural strength of the back plate can be increased, and the light emitted from the light source 90 disposed on the bottom wall of the groove 10a can be blocked, thereby improving the light extraction efficiency. The optical film 50 is a sheet structure, the optical film 50 can be one or more of a diffuser plate, a brightness enhancement film or a shading film, the optical film 50 is connected to the opening periphery of the groove 10a, namely, the periphery of the optical film is erected on the part of the opening periphery of the groove 10a, so as to cover the groove 10a, a cavity is formed by matching with the back plate 10, so that light emitted by the light source 90 positioned in the cavity is diffused or brightened through the optical film 50, an even surface light source 90 is formed, and the light emitting efficiency is improved. The connection between the back plate 10 and the optical film 50 may be a snap connection, a screw connection, or a plug connection, or may be an adhesive bonding, which is not limited herein. The light source 90 comprises an LED lamp 91, the size is small, the light emitting life is long, the LED lamp 91 can be fixed on the bottom wall of the groove 10a in a sticking or threaded connection mode, and effective electric connection and mechanical fixation are achieved.
Meanwhile, the direct type backlight module 100 further includes a light guide member 30, the light guide member 30 includes a light guide portion 31 and a light emergent portion 33, the light emergent portion 33 is disposed at an outer edge of the opening of the groove 10a, at this time, the optical film 50 is disposed on a surface of the light emergent portion 33 departing from the back plate 10, so that the light emergent portion 33 is sandwiched between the optical film 50 and the back plate 10, and connection manners between the three may be a threaded connection, a snap connection, or an adhesive manner, which is not limited herein. The light guide portion 31 is connected to the light emitting portion 33, and is attached to the sidewall of the groove 10a, that is, extends from the opening position of the groove 10a to the bottom wall direction of the groove 10a, and the light guide portion 31 needs to transmit light and totally reflect light inside, so that the material thereof needs to have good light transmittance, for example, transparent PC (Polycarbonate), PS (Polystyrene), or PMA (Propylene glycol monomethyl ether acetate). It can be understood that when light enters a medium with a lower refractive index from a medium with a higher refractive index, if the incident angle is larger than a certain critical angle θ c (the light is far from the normal), the refracted light will disappear, and all the incident light will be reflected without entering the medium with a lower refractive index, so that the angle between the light emitted from the light source 90 to the light guide portion 31 and the surface of the light guide portion 31 needs to be larger than the critical angle, so that the light can be transmitted to the light emergent portion 33 by total reflection inside the light guide portion 31.
In addition, at least one of the two opposite surfaces of the light guide part 31 is provided with a reflector plate, and the reflector plate can reflect the light in the light guide part 31 back into the light guide part 31 when the light is not totally reflected, so that the reflection probability is increased, the light cannot be completely scattered after entering the light guide part 31, and the light can be transmitted to the light emergent part 33 to realize light emergent in the edge area.
The utility model discloses among the technical scheme, straight following formula backlight unit 100 includes backplate 10 and leaded light spare 30, and backplate 10 is formed with recess 10a, and leaded light spare 30 is including the light guide part 31 and the light-emitting part 33 that are connected, and light guide part 31 is located recess 10 a's inside wall, light-emitting part 33 locate recess 10 a's opening outside along, and optical film 50 presses the surface of locating light-emitting part 33 and sets up relatively with recess 10a diapire, and recess 10a diapire is located to light source 90. When the light source 90 emits light, most of the light is emitted toward the optical film 50, thereby forming a uniform surface light source 90, which is a display area; at the same time, part of the light is emitted to the light guide member 30, and a reflective sheet is disposed on at least one side surface of the light guide portion 31, so that the light emitted from the end of the light guide portion 31 is totally reflected in the light guide portion 31, gradually reaches the light emitting portion 33, and is emitted from the light emitting portion 33 to the optical film 50. The direct type backlight module 100 with the structure can enable the edge position of the back plate 10 for supporting to emit light, thereby reducing the occurrence of edge shadows; and increased straight following formula backlight unit 100's display area, when guaranteeing certain display area for the width that backplate 10 is used for the edge of support can be designed great, improves the reliability that backplate 10 supported, and shows in the outward appearance for narrow frame, has guaranteed straight following formula backlight unit 100's narrow frame outward appearance design reliability height simultaneously.
Referring to fig. 1 again, in an alternative embodiment, the back plate 10 includes a bottom plate 11, a side plate 13 connected to a peripheral edge of the bottom plate 11, and a bending plate 15, the bending plate 15 is formed by bending and extending an end portion of the side plate 13 away from the bottom plate 11, the side plate 13 and the bottom plate 11 enclose the groove 10a, the optical film 50 is connected to a surface of the bending plate 15 away from the bottom plate 11, and the light outlet portion 33 is sandwiched between the bending plate 15 and the optical film 50.
In this embodiment, the back plate 10 includes a bottom plate 11, a side plate 13 and a bending plate 15, the side plate 13 is formed by bending and extending the periphery of the bottom plate 11, the two are matched to form the groove 10a, meanwhile, in order to stably support the optical film 50 and the display panel, the end portion of the side plate 13 far away from the bottom plate 11 is bent and extended to form the bending plate 15, and the bending plate 15 can be set wider due to the light emitting portion 33, so that the support of the optical film 50 and the display panel is more reliable. This contained angle between 15 and the curb plate 13 of buckling and the contained angle size between curb plate 13 and the bottom plate 11 are the same to make 15 and the bottom plate 11 of buckling be parallel arrangement, when light-emitting portion 33 and optical film 50 set up on 15 of buckling, can with bottom plate 11 parallel arrangement, and then realize hiding the complete of recess 10 a.
Specifically, in order to enable all the light emitted by the light source 90 to be emitted to the optical film 50, an included angle between the side plate 13 and the bottom plate 11 is greater than 90 °, and in order to support the optical film 50 and ensure a light emitting space of the light source 90, an included angle between the side plate 13 and the bottom plate 11 is less than 180 °, and therefore, the included angle between the side plate 13 and the bottom plate 11 ranges from greater than 90 ° to less than 180 °, for example, 120 °, 130 °, and the like.
In an alternative embodiment, the end of the light emergent portion 33 away from the light guide portion 31 is flush with the periphery of the bending plate 15. In this embodiment, it can be understood that, when the bending plate 15 supports the optical film 50 and the display panel, because the light guide member 30 is disposed, the light part can be guided to the light emergent portion 33, so that the area of the optical film 50 opposite to the bending plate 15 is divided into the edge display area and the edge non-display area, and therefore the extending width of the light emergent portion 33 and the extending width of the bending plate 15 are set to be the same, that is, the end of the light emergent portion 33 far away from the light guide portion 31 is flush with the periphery of the bending plate 15, and the edge display area part can be increased, so that stable support is ensured, the structural design of a narrow frame is further realized, and the luminous efficiency of the light source 90 can also be improved. Of course, here, the end portion of the light exit portion 33 may be partially grooved by the escape fixing structure.
In an alternative embodiment, the surface of the light guide part 31 facing the rear panel 10 is provided with the reflective sheet, which is defined as a first reflective sheet 71, and in the extending direction of the side panel 13, the length of the first reflective sheet 71 is greater than the length of the light guide part 31.
In this embodiment, when the reflective sheet is disposed on the surface of the light guide part 31 facing the back plate 10, the reflective sheet is defined as a first reflective sheet 71, the first reflective sheet 71 may be connected to the back plate 10 by bonding, clamping, or the like, and the light guide part 31 may also be connected by the above-mentioned method or other connection methods. Here, in the extending direction of the side plate 13, the length of the first reflective sheet 71 is greater than the length of the light guide part 31, that is, the end of the light guide part 31 far from the light emitting part 33 does not abut against the bottom plate 11, so that light can enter the light guide part 31 from the end of the light guide part 31, and at this time, the included angle between the light emitted from the light source 90 to the end of the light guide part 31 and the bottom plate 11 makes the light in the light guide part 31 totally reflected more easily, thereby improving the transmission efficiency of the light in the light guide part 31 and improving the light emitting rate and the area of the edge display region. Meanwhile, because of the limitation of the divergence angle of the light source 90, the light at the connection position of the bottom plate 11 and the side plate 13 is less, so that the end part of the light guide part 31 does not abut against the bottom plate 11, the use of the light guide part 30 can be reduced while the edge light-emitting rate is ensured, and the cost is saved. Here, the second reflection sheet 73 may or may not abut against the bottom plate 11, and may have a length longer than that of the light guide part 31.
In an alternative embodiment, the first reflective sheet 71 has the same length as the side plate 13 in the extending direction of the side plate 13. In this embodiment, two ends of the first reflective sheet 71 are respectively abutted against the bottom plate 11 and the bending plate 15, the first reflective sheet 71 completely covers the side plate 13, and can reflect the light emitted from the light source 90 to the side plate 13, and further project the light into the light guide portion 31 or directly emit the light to the optical film 50, and further each light emitted from the light source 90 is utilized, so that the luminous efficiency is higher.
With reference to fig. 1, in an alternative embodiment, the surface of the light guide part 31 facing away from the back plate 10 is provided with the reflective sheet, which is defined as a second reflective sheet 73, in the extending direction of the side plate 13;
the length of the second reflective sheet 73 is the same as the length of the light guide part 31; or the like, or, alternatively,
the length of the second reflection sheet 73 is greater than the length of the light guide part 31, the second reflection sheet 73 is provided with a light transmission hole 731, and the light transmission hole 731 is located at one end of the light guide part 31 away from the light exit part 33.
In this embodiment, the first reflective sheet 71 is disposed on a side surface of the light guide part 31, and meanwhile, the reflective sheet is also disposed on a surface of the light guide part 31 away from the side plate 13, and the reflective sheet is defined as the second reflective sheet 73, in this structure, through reflection of the first reflective sheet 71 and the second reflective sheet 73, it can be ensured that light entering from an end portion of the light guide part 31 is totally reflected to the maximum extent, that is, light is totally reflected on two opposite surfaces of the light guide part 31 through a light angle, or light is totally transmitted to the light exit part 33 through reflection of the first reflective sheet 71 and the second reflective sheet 73, and then light is emitted, so that light exit efficiency and light exit area of the light exit part 33 are improved to the maximum extent, and more selection spaces can be provided for narrow frame design.
Specifically, the length of the second reflective sheet 73 in the extending direction of the side plate 13 may be the same as the length of the light guide part 31, so as not to affect the light emitted from the light source 90 to the end of the light guide part 31 far from the light emitting part 33.
Of course, in another embodiment, the length of the second reflection sheet 73 may be longer than the length of the light guide part 31, and in this case, only the light transmission hole 731 needs to be formed at a position of the second reflection sheet 73 close to the end of the light guide part 31, so that the light emitted from the light source 90 is emitted to the light guide part 31 through the light transmission hole 731, thereby realizing the light emission of the edge display region. Here, one or more light-transmitting holes 731 may be provided, and a plurality of light-transmitting holes 731 may be spaced apart in the extending direction of the second reflection sheet 73, thereby increasing the probability of optical emission to the light guide 31. In addition, the second reflective sheet 73 can directly extend to the bottom plate 11, so that the area covering the side plate 13 is increased, and the light emitted by the light source 90 and emitted to the side plate 13 can be quickly reflected back to the optical film 50, thereby further improving the light extraction efficiency.
In an alternative embodiment, when the second reflector 73 has the light-transmitting hole 731, an included angle between a connection line between an edge of the light-transmitting hole 731 and the light source 90 and the bottom plate 11 is greater than or equal to 25 ° and less than or equal to 30 °.
In this embodiment, based on the range of the included angle formed between the side plate 13 and the bottom plate 11, in order to make the light entering the light guide part 31 totally reflect inside the light guide part, the range of the included angle formed between the connecting line of the light source 90 and the end of the light guide part 31 and the bottom plate 11 is set to be greater than or equal to 25 °, smaller than or equal to 30 °, for example, 25 °, 28 °, or 30 °, and the light within the range of the included angle can be greater than the critical angle after entering the light guide part 31, so as to realize the occurrence of total reflection.
In an alternative embodiment, the thickness of the light guide part 31 perpendicular to the extending direction of the side plates 13 ranges from 2mm to 5 mm.
In this embodiment, the thicker the light guide portion 31 is in the direction perpendicular to the extending direction of the side plate 13, the fewer the times of total reflection of light inside the light guide portion 31 is, the light emitting portion 33 can be reached to emit light, that is, the light emitting speed is fast, and the response is more sensitive, however, the thickness of the light guide portion 31 should not be too large, otherwise, more material cost is additionally increased, and the display effect on the edge area is not large, so the thickness range of the light guide portion 31 in the direction perpendicular to the extending direction of the side plate 13 is set to be 2mm to 5mm, for example, 3mm, 4mm, and the like, thereby achieving a better display effect and saving cost.
On the basis of the above embodiment, in an optional embodiment, a third reflective sheet 75 is attached to the bottom wall of the groove 10a, and the third reflective sheet 75 is provided with an installation hole exposing the light source 90.
In this embodiment, the third reflective sheet 75 is attached to the bottom plate 11, and the third reflective sheet 75 is provided with a mounting hole exposing the light source 90, so that the light emitted from the light source 90 can be reflected, the probability that the light is emitted to the optical film 50 is increased, and the light emitting efficiency is improved. Of course, in order to further improve the light emitting effect, in the present embodiment, the light sources 90 are provided in plural, the mounting holes are also provided in plural, and the plural light sources 90 are uniformly distributed on the bottom plate 11 at intervals, so as to provide a more uniform surface light source 90 for the display panel. Meanwhile, in order to improve the light emitting efficiency of the light source 90, the light source 90 further includes a lens 93, the lens 93 covers the LED lamp 91, and the lens 93 can condense light emitted by the LED lamp 91, so that the light is emitted toward a direction away from the bottom plate 11, and the light emitting efficiency of the direct type backlight module 100 is increased.
In addition, the direct type backlight module 100 further comprises a PCB, the PCB may be disposed on the bottom wall of the groove 10a, and the light source 90 is directly fixed on the PCB to realize electrical connection; of course, the PCB board may also be disposed on the outer side of the back plate 10, and electrically connected to the light source 90 through a wire, and various circuits are disposed on the PCB board, so as to control the opening and closing of the light source 90 and provide electric energy for the same.
The utility model discloses again provide a display device (not shown), including straight following formula backlight unit 100 and with the display panel that straight following formula backlight unit 100 connects, straight following formula backlight unit 100 refers to the concrete structure of above-mentioned embodiment. Since the direct type backlight module 100 of the display device adopts all the technical solutions of all the embodiments, at least all the advantages brought by the technical solutions of the embodiments are achieved, and no further description is given here.
In this embodiment, the display device may be a projection device, a television, a tablet computer, a notebook computer, a palm computer, a smart phone, an e-book reader, or other devices having a display function. Specifically, the display panel can be connected with the edge of the back plate 10, and is located on one side of the optical film 50 departing from the back plate 10, and the optical film 50 is arranged between the back plate 10 and the display panel, so that light emitted by the light source 90 is diffused more uniformly, and the optical visual effect is improved.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A direct type backlight module is characterized by comprising:
a back plate formed with a groove;
the light guide part comprises a light guide part and a light emergent part which are connected, the light guide part is attached to the inner side wall of the groove, the light emergent part is arranged at the outer edge of the opening of the groove, and a reflector plate is attached to the surface of the light guide part facing the back plate and/or the surface of the light guide part departing from the back plate;
the optical diaphragm is connected to the surface, deviating from the back plate, of the light emergent part and is arranged opposite to the bottom wall of the groove; and the number of the first and second groups,
the light source is arranged on the bottom wall of the groove, and the light part of the light source is conducted to the light emergent part through the light guide part and is emitted to the optical film.
2. The direct-type backlight module according to claim 1, wherein the back plate comprises a bottom plate, a side plate connected to a periphery of the bottom plate, and a bending plate formed by bending and extending an end of the side plate away from the bottom plate, the side plate and the bottom plate enclosing the groove, the optical film is connected to a surface of the bending plate away from the bottom plate, and the light outlet portion is sandwiched between the bending plate and the optical film.
3. The direct-type backlight module as claimed in claim 2, wherein the surface of the light guide part facing the back plate is provided with the reflective sheet, the reflective sheet is defined as a first reflective sheet, and the length of the first reflective sheet is greater than the length of the light guide part in the extending direction of the side plates.
4. The direct type backlight module according to claim 3, wherein the first reflection sheet has the same length as the side plate in an extending direction of the side plate.
5. The direct type backlight module as claimed in claim 3, wherein the surface of the light guide part facing away from the back plate is provided with the reflective sheet, which is defined as a second reflective sheet, in the extending direction of the side plates;
the length of the second reflector plate is the same as that of the light guide part; or the like, or, alternatively,
the length of the second reflector plate is greater than that of the light guide part, the second reflector plate is provided with a light hole, and the light hole is located at one end, far away from the light emergent part, of the light guide part.
6. The direct-type backlight module of claim 5, wherein when the second reflector plate is provided with the light holes, an angle between a line connecting edges of the light holes and the light source and the bottom plate is greater than or equal to 25 ° and less than or equal to 30 °.
7. The direct type backlight module as claimed in claim 5, wherein a third reflective sheet is attached to a bottom wall of the recess, and the third reflective sheet has a mounting hole exposing the light source.
8. The direct type backlight module according to any one of claims 2 to 7, wherein the light guide part has a thickness in a range of 2mm to 5mm perpendicular to the extending direction of the side plates.
9. The direct type backlight module according to any one of claims 2 to 7, wherein an end of the light emergent portion away from the light guide portion is flush with an outer peripheral edge of the bent plate.
10. A display device comprising a direct type backlight module and a display panel connected to the direct type backlight module, wherein the direct type backlight module is the direct type backlight module according to any one of claims 1 to 9.
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| CN202021373037.6U CN212341648U (en) | 2020-07-13 | 2020-07-13 | Direct type backlight module and display equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021373037.6U CN212341648U (en) | 2020-07-13 | 2020-07-13 | Direct type backlight module and display equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965296A (en) * | 2021-03-17 | 2021-06-15 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
| CN113543560A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN115314623A (en) * | 2022-08-15 | 2022-11-08 | Oppo广东移动通信有限公司 | Support, motor assembly, lens module and electronic equipment |
-
2020
- 2020-07-13 CN CN202021373037.6U patent/CN212341648U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965296A (en) * | 2021-03-17 | 2021-06-15 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
| CN113543560A (en) * | 2021-08-02 | 2021-10-22 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN113543560B (en) * | 2021-08-02 | 2024-02-02 | 宁波视睿迪光电有限公司 | Frame, light box and display device |
| CN115314623A (en) * | 2022-08-15 | 2022-11-08 | Oppo广东移动通信有限公司 | Support, motor assembly, lens module and electronic equipment |
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