CN106019702A - Direct type backlight module and direct type displayer - Google Patents
Direct type backlight module and direct type displayer Download PDFInfo
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- CN106019702A CN106019702A CN201610398566.3A CN201610398566A CN106019702A CN 106019702 A CN106019702 A CN 106019702A CN 201610398566 A CN201610398566 A CN 201610398566A CN 106019702 A CN106019702 A CN 106019702A
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 40
- 230000000903 blocking effect Effects 0.000 claims abstract description 38
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000000889 atomisation Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a direct type backlight module and a direct type displayer. The direct type backlight module comprises a back plate, a backlight source installed in the back plate, and a liquid crystal panel covering the backlight source. The back plate comprises a bottom plate opposite to the liquid crystal panel, and a side frame extending from the peripheral edge of the bottom plate to the liquid crystal panel. An installation cavity is defined by the bottom plate and the side frame. The backlight source is contained in the installation cavity and fixed to the bottom plate. The backlight source comprises a periphery backlight source on the periphery. The outer side of the periphery backlight source is provided with a light blocking structure which is used for reducing light, transferred to the side edge of the side frame, emitted by the backlight source. Accordingly, the amount of light, transferred to the side edge of the side frame, emitted by the periphery backlight source is equal to the amount of light, transferred to the edge corner of the side frame, emitted by the periphery backlight source, so that the brightness of the side edge of the side frame is equal to that of the side corner of the side frame, and it is ensured that all places of the liquid crystal panel of the direct type backlight module emit consistent light.
Description
Technical Field
The invention relates to the technical field of direct type displays, in particular to a direct type backlight module and a direct type display.
Background
The existing direct type display comprises a direct type backlight module, which comprises a back plate, a backlight source and a liquid crystal panel. Generally, the back plate comprises a bottom plate and a side frame formed by extending from the periphery of the bottom plate to one side of the bottom plate, and the side frame and the bottom plate jointly enclose to form a mounting cavity; the backlight source is contained in the installation cavity and fixed on the bottom plate, and the liquid crystal panel is fixedly installed at one end of the side frame, back to the bottom plate, and covers the backlight source. Because the distance from the backlight source to the side edge of the side frame is less than the distance from the backlight source to the corner of the side frame, under the irradiation of the same backlight source, the light quantity transmitted to the side edge of the side frame by the light emitted by the backlight source is greater than the light quantity transmitted to the corner of the side frame in the same time, and further the brightness of the side edge and the corner of the direct type backlight module is inconsistent, so that the display effect of the direct type backlight module is influenced.
Disclosure of Invention
The present invention provides a direct type backlight module, which aims to make the brightness of the liquid crystal panel of the direct type backlight module consistent.
In order to achieve the above object, the direct type backlight module provided by the present invention comprises a back plate, a backlight source installed in the back plate, and a liquid crystal panel covering the backlight source; wherein,
the back plate comprises a bottom plate and a side frame, wherein the bottom plate is arranged opposite to the liquid crystal panel, the side frame extends from the periphery of the bottom plate to the liquid crystal panel, and the bottom plate and the side frame jointly enclose to form an installation cavity;
the backlight source is accommodated in the installation cavity and fixed on the bottom plate, the backlight source comprises a peripheral backlight source positioned at the periphery, and a light blocking structure is arranged at the outer side of the peripheral backlight source and used for reducing the light emitted by the backlight source from being transmitted to the side edge of the side frame.
Preferably, the peripheral backlight source includes a lamp panel, an LED lamp mounted on the lamp panel, and a refractive lens covering the LED lamp, the refractive lens has a light exit surface protruding toward the liquid crystal panel and arranged in a spherical shape, the light exit surface has a first light exit area extending from a center of the refractive lens to the side frame, and the light blocking structure is arranged in the first light exit area.
Preferably, the first light emitting area is subjected to atomization treatment to form the light blocking structure.
Preferably, the first light emitting region is blackened to form the light blocking structure.
Preferably, the peripheral backlight source includes a lamp panel, an LED lamp mounted on the lamp panel, and a reflective lens covering the LED lamp, the reflective lens has a reflective surface recessed away from the liquid crystal panel and disposed in a conical surface, the reflective surface has a first light-reflecting region extending from a center of the reflective lens to the side frame, the lamp panel has a light-reflecting surface surrounding the LED lamp, the light-reflecting surface has a second light-reflecting region facing the first light-reflecting region, and the light-blocking structure is disposed in the first light-reflecting region and/or the second light-reflecting region.
Preferably, the first light reflection region is subjected to atomization treatment to form the light blocking structure.
Preferably, the second light reflecting region is subjected to blackening treatment and/or atomization treatment to form the light blocking structure.
Preferably, the peripheral backlight source includes a corner backlight source facing the corner of the side frame, light blocking structures are disposed on two outer sides of the corner backlight source, and the two light blocking structures of the corner backlight source are disposed at an interval, so that a second light emitting area facing the corner of the side frame is reserved between the two light blocking structures.
Preferably, the backlight source includes a plurality of peripheral light sources and a plurality of inner peripheral light sources disposed inside the peripheral light sources, and the peripheral light sources and the inner peripheral light sources are uniformly arranged on the base plate.
The invention also provides a direct type display, which comprises a direct type backlight module, wherein the direct type backlight module comprises a back plate, a backlight source arranged in the back plate and a liquid crystal panel covering the backlight source; wherein,
the back plate comprises a bottom plate and a side frame, wherein the bottom plate is arranged opposite to the liquid crystal panel, the side frame extends from the periphery of the bottom plate to the liquid crystal panel, and the bottom plate and the side frame jointly enclose to form an installation cavity;
the backlight source is accommodated in the installation cavity and fixed on the bottom plate, the backlight source comprises a peripheral backlight source positioned at the periphery, and a light blocking structure is arranged at the outer side of the peripheral backlight source and used for reducing the light emitted by the backlight source from being transmitted to the side edge of the side frame.
The light blocking structure is arranged on the outer side of the peripheral light source to reduce the light emitted by the peripheral backlight source and transmitted to the side edges of the side frames, so that the light quantity transmitted to the side edges of the side frames is equivalent to the light quantity transmitted to the corners of the side frames, the brightness of the side edges of the side frames is equivalent to the brightness of the corners of the side frames, and the light emitting uniformity of the liquid crystal panel 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 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 schematic structural diagram of a direct-type backlight module according to an embodiment of the present invention;
FIG. 2 is an assembled view of the back plate and the backlight source of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a schematic view of a direct-type backlight module according to another embodiment of the present invention;
FIG. 6 is a partial enlarged view of FIG. 5 at B;
FIG. 7 is an assembled view of the back plate and the backlight source of FIG. 5;
FIG. 8 is an enlarged view of a portion of FIG. 7 at C;
fig. 9 is a partial enlarged view of fig. 7 at D.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment 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 relative importance or implicitly indicating 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, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The existing direct type display comprises a direct type backlight module, which comprises a back plate, a backlight source and a liquid crystal panel. Generally, the back plate comprises a bottom plate and a side frame formed by extending from the periphery of the bottom plate to one side of the bottom plate, and the side frame and the bottom plate jointly enclose to form a mounting cavity; the backlight source is contained in the installation cavity and fixed on the bottom plate, and the liquid crystal panel is fixedly installed at one end of the side frame, back to the bottom plate, and covers the backlight source. Because the distance from the backlight source to the side edge of the side frame is less than the distance from the backlight source to the corner of the side frame, under the irradiation of the same backlight source, the light quantity transmitted to the side edge of the side frame by the light emitted by the backlight source is greater than the light quantity transmitted to the corner of the side frame in the same time, and further the brightness of the side edge and the corner of the direct type backlight module is inconsistent, so that the display effect of the direct type backlight module is influenced. In view of the above problems, the present invention provides an improved backlight module, and please refer to fig. 1 to 2, and fig. 1 to 2 are schematic structural views of an embodiment of a direct type backlight module according to the present invention.
The direct type backlight module 100 includes a back plate 10, a backlight 20 installed in the back plate 10, and a liquid crystal panel 30 covering the backlight 20. In general, the direct-type backlight module 100 further includes a diffuser plate 40, an optical film 50, a reflective sheet 60, and other components.
The back plate 10 includes a bottom plate 11 disposed opposite to the liquid crystal panel 30, and a side frame 12 formed by extending from a periphery of the bottom plate 11 to the liquid crystal panel 30, wherein the bottom plate 11 and the side frame 12 together enclose a mounting cavity 13. It should be noted that the back plate 10 may be formed by stamping a sheet metal part or by welding a plurality of sheet metal parts, and is not limited herein.
The backlight 20 is accommodated in the mounting cavity 13 and fixed on the bottom plate 11. Note that the backlight 20 includes an outer backlight 2a located at the outer periphery, and of course, the backlight 20 also includes an inner backlight 2b located inside the outer backlight 2 a. The light blocking structure is disposed outside the peripheral backlight 2a, and the light blocking structure can block light emitted from the peripheral backlight 2a from being transmitted to the side edge 121 of the side frame 12, so that the brightness of the side edge 121 of the side frame 12 is equivalent to that of the corner 122 of the side frame 12.
It should be noted that the light blocking structure is mainly used to block light of the peripheral backlight 2a from being transmitted to the side edge 121 of the side frame 12, and the light blocking structure may be formed by performing an atomization process on the peripheral backlight 2a, performing a black coating process on the peripheral backlight 2a, or formed by another optical structure capable of blocking light from being transmitted, and is not limited specifically herein.
The light blocking structure is arranged outside the peripheral backlight source 2a to reduce the quantity of light transmitted from the peripheral backlight source 2a to the side edge 121 of the side frame 12, so that the quantity of light transmitted from the peripheral backlight source 2a to the side edge 121 of the side frame 12 is equivalent to the quantity of light transmitted to the corner 122 of the side frame 12, the brightness of the periphery of the direct type backlight module 100 is consistent, and the display effect of the direct type backlight module 100 is improved.
In this embodiment, the peripheral backlight 2a includes a lamp panel 21, an LED lamp 22 mounted on the lamp panel 21, and a lens covering the LED lamp 22. The lamp plate 21 is the PC board, and it can adopt the fixed bonding on bottom plate 11 of the mode of bonding, and LED lamp 22 bonds on lamp plate 21, and lens shroud LED lamp 22 sets up, and this lens can adopt bonding, grafting or other connected modes to install on lamp plate 21.
It should be noted that, due to the different thicknesses of the direct-type display, the light mixing distances of the direct-type backlight module 100 corresponding to the direct-type display are different. In order to ensure the brightness of the liquid crystal panel 30 of the direct-type backlight module 100, different lenses, such as the refractive lens 23 and the reflective lens 23', are disposed according to different light mixing distances. It should be noted that, in the embodiment of the invention, if the light mixing distance of the direct-type backlight module 100 is greater than or equal to 20MM, the refractive lens 23 is used as the lens covering the LED lamp 22, and if the light mixing distance of the direct-type backlight module 100 is less than 20MM, the reflective lens 23' is used as the lens covering the LED lamp 22.
In an embodiment of the invention, referring to fig. 1 to 4, the lens is a refractive lens 23, the refractive lens 23 has a light exit surface 231 protruding toward the liquid crystal panel 30 and disposed in a spherical shape, the light exit surface 231 has a first light exit area 231a extending from the center of the refractive lens 23 to the side frame 12, and the light blocking structure is disposed in the first light exit area 231 a. The size of the area of the first light emission region 231a is determined according to actual conditions.
In order to reduce the light transmission capability of the first light emitting region 231a, the first light emitting region 231a is atomized to form a light blocking structure. The light transmission capability of the first light emitting region 231a after the atomization treatment is weakened, and thus, the light emitted from the LED lamp 22 can be effectively blocked. Therefore, the light emitted by the LED lamp 22 is transmitted to the side edge 121 of the side frame 12, and the amount of light transmitted by the LED lamp 22 to the side edge 121 of the side frame 12 is substantially equal to the amount of light transmitted to the corner 122 of the side frame 12, so that the brightness of the periphery of the liquid crystal panel 30 is uniform, which is beneficial to improving the display effect of the direct type backlight module 100.
Obviously, in order to reduce the light transmission capability of the first light emitting region 231a, the first light emitting region 231a may be blackened to form a light blocking structure. It should be noted that the blackening process is understood as coating a dark color, i.e. a non-reflective material, on the first light-emitting area; the area of the first light emission region 231a subjected to the blackening treatment may be a part or the whole. The light transmission capability of the first light emitting area 231a after the blackening process is reduced, and further, the light emitted from the LED lamp 22 is effectively reduced from being transmitted to the side edge 121 of the side frame 12 through the first light emitting area 231 a.
In order to reduce the light transmission capability of the first light emission region 231a, a light blocking film, a light blocking material, or another structure having a light blocking property may be attached to the first light emission region 231a, and this is not particularly limited.
In another embodiment of the present invention, referring to fig. 5 to 6, the lens is a reflective lens 23 ', the reflective lens 23 ' has a reflective surface 231 ' that is concave and conical in a direction away from the liquid crystal panel 30, and the lamp panel 21 has a reflective surface 211 surrounding the LED lamp 22. The light emitted from the LED lamp 22 is reflected by the reflective surface 231 'to the reflective surface 211 on the lamp panel 21, and the reflective surface 211 reflects the light, so that the light is emitted from the side surface of the reflective lens 23' and transmitted to the liquid crystal panel 30. It should be noted that the reflective surface 211 on the lamp panel 21 may be formed by coating a reflective material, adhering a reflective mirror, or by other reflective structures, and is not limited herein.
The reflective surface 231 ' has a first reflective region 231a ' extending from the center of the reflective lens 23 ' toward the bezel 12, the reflective surface 211 has a second reflective region 211a facing the first reflective region 231a ', and the light blocking structure is disposed in the first reflective region 231a ' and/or the second reflective region 211 a. It is understood that the light blocking structure may be disposed on the first light reflecting region 231a ', the second light reflecting region 211a, or both the first light reflecting region 231 a' and the second light reflecting region 211a, and is not limited in this respect. So set up, be favorable to reducing the light that LED lamp 22 sent and spread to side 121 of side frame 12, guaranteed that the side 121 of side frame 12 is unanimous with the luminance of the corner 122 of side frame 12. Therefore, the brightness of the liquid crystal panel 30 is consistent, and the problem of bright edges or dark corners of the direct type backlight module 100 is avoided.
In order to reduce the reflectivity of the first light reflecting region 231a ', the first light reflecting region 231 a' may be atomized to form a light blocking structure. The atomization area of the first light reflection region 231a 'may be a part or the entire area, and the atomization area of the first light reflection region 231 a' is set according to actual conditions. The reflective capability of the atomized first light reflecting region 231a ' is reduced, and after the light emitted from the LED is transmitted to the first light reflecting region 231a ', only a part of the light is reflected to the light reflecting surface 211 through the first light reflecting region 231a ', so that the amount of light transmitted to the side edge 121 of the side frame 12 can be effectively reduced, and the brightness of the side edge 121 of the side frame 12 and the brightness of the corner 122 of the side frame 12 are ensured to be consistent.
Obviously, in order to reduce the brightness of the side edge 121 of the side frame 12, the second light reflecting region 211a may be subjected to a fogging process and/or a black coating process to form a light blocking structure. When the second light reflecting region 211a is atomized, the area of the second light reflecting region 211a may be a part or the whole of the atomized area, and the atomized area of the second light reflecting region 211a is set according to actual conditions. The second light reflecting area 211a after atomization has a reduced reflection capability, and only a part of the light transmitted to the second light reflecting area 211a after reflection is reflected by the second light reflecting area 211a, so that the amount of light transmitted to the side edge 121 of the side frame 12 is effectively reduced, and the brightness of the side edge 121 of the side frame 12 is equivalent to that of the corner 122 of the side frame 12.
Of course, the second light reflection region 211a may be blackened to reduce the reflection capability of the second light reflection region 211 a. Here, the blackening treatment is understood to mean that a dark color material, that is, a non-reflective material is coated on the second light reflection region 211 a; the area blackened to the second light reflection region 211a may be a part or the whole. The second light-reflecting region 211a after being blackened has a reduced light-reflecting ability, so that only a part of the light transmitted to the second light-reflecting region 211a is reflected, thereby effectively reducing the amount of light transmitted to the side edge 121 of the side frame 12, and further making the side edge 121 of the side frame 12 have a brightness equivalent to that of the corner 122 of the side frame 12.
It should be noted that the peripheral backlight 2a includes a corner backlight 2c facing the corner 122 of the side frame 12, and in order to avoid the brightness of the side edge 122 of the side frame 12 being too dark, in the embodiment, light blocking structures are disposed on both outer sides of the corner backlight 2c, and a second light emitting area 21c facing the corner 122 of the side frame 12 is reserved between the two light blocking structures.
Referring to fig. 2 and 4, if the lens of the direct-type backlight module 100 is a refractive lens 23, the first light-emitting regions 231a are disposed on both outer sides of the refractive lens 23, and the light-blocking structures are disposed on the two first light-emitting regions 231a, that is, the first light-emitting regions 231a are atomized or blackened, so as to reduce the light-emitting capability of the first light-emitting regions 231 a. Moreover, the two first light-emitting areas 231a are disposed at an interval, and a second light-emitting area 231b opposite to the corner 122 of the side frame 12 is reserved, that is, it is ensured that the amount of light transmitted from the corner backlight 2c to the corner 122 of the side frame 12 is not affected. Thus, the brightness of the corner 122 of the side frame 12 is equivalent to the brightness of the side edge 121 of the side frame 12.
In addition, referring to fig. 7 and 9, if the lens of the direct-type backlight module 100 has the conventional reflective lens 23 ', first reflective regions 231a ' may be disposed on both outer sides of the refractive lens 23 ', and two second reflective regions are correspondingly disposed on the lamp panel 21, where the two first reflective regions 231a ' are disposed at an interval, a third reflective region 231b ' facing the corner 122 of the side frame 12 is reserved, and the two second reflective regions are disposed at an interval, a fourth reflective region facing the corner 122 of the side frame 12 is reserved.
In order to avoid the problem of dark corners in the direct-type backlight module 100, the two first light-reflecting regions 231a ' may be atomized to reduce the light-reflecting capability of the two first light-reflecting regions 231a ', or the two second light-reflecting regions may be atomized or blackened to reduce the light-reflecting capability of the two second light-reflecting regions, and meanwhile, the light-reflecting capabilities of the third light-reflecting region 231b ' and the fourth light-reflecting region are not affected, so that the light quantity transmitted to the corner 122 of the side frame 12 is not affected, and thus, the corner brightness of the side frame 12 is equivalent to the side 121 brightness of the side frame 12.
In order to ensure the uniformity of light emission of the direct-type backlight module 100, referring to fig. 2 or fig. 7, a plurality of peripheral backlights 2a of the backlight 20 and a plurality of inner peripheral backlights 2b disposed inside the peripheral backlights 2a are uniformly arranged on the bottom plate 11. The peripheral backlight sources 2a and the inner peripheral backlight sources 2b are uniformly distributed, so that the light emitting uniformity of the direct type backlight module 100 is ensured; moreover, since the light blocking structures are disposed outside the peripheral backlights 2a, when the backlight 20 is installed, it is not necessary to consider that the peripheral backlights 2a are too close to the side frame 12, which causes the problem of bright edges or dark corners of the direct-type backlight module 100, and further ensures the uniformity of light emission of the direct-type backlight module 100.
The present invention further provides a direct type display, which includes a direct type backlight module 100, and the specific structure of the direct type backlight module 100 refers to the above embodiments, and since the direct type display adopts all technical solutions of all the above embodiments, the direct type display at least has all the beneficial effects brought by the technical solutions of the above embodiments, and further description thereof is omitted.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A direct type backlight module is characterized by comprising a back plate, a backlight source arranged in the back plate and a liquid crystal panel covering the backlight source; wherein,
the back plate comprises a bottom plate and a side frame, wherein the bottom plate is arranged opposite to the liquid crystal panel, the side frame extends from the periphery of the bottom plate to the liquid crystal panel, and the bottom plate and the side frame jointly enclose to form an installation cavity;
the backlight source is accommodated in the installation cavity and fixed on the bottom plate, the backlight source comprises a peripheral backlight source positioned at the periphery, and a light blocking structure is arranged at the outer side of the peripheral backlight source and used for reducing the light emitted by the backlight source from being transmitted to the side edge of the side frame.
2. The direct-type backlight module as claimed in claim 1, wherein the peripheral backlight source comprises a lamp panel, an LED lamp mounted on the lamp panel, and a refractive lens covering the LED lamp, the refractive lens has a light exit surface protruding toward the liquid crystal panel and disposed in a spherical shape, the light exit surface has a first light exit area extending from a center of the refractive lens to the side frame, and the light blocking structure is disposed in the first light exit area.
3. The direct type backlight module as claimed in claim 2, wherein the first light-emitting area is processed by atomization to form the light-blocking structure.
4. The direct type backlight module as claimed in claim 2, wherein the first light-emitting region is blackened to form the light-blocking structure.
5. The direct type backlight module according to claim 1, wherein the peripheral backlight source comprises a lamp panel, an LED lamp mounted on the lamp panel, and a reflective lens covering the LED lamp, the reflective lens has a reflective surface recessed away from the liquid crystal panel and disposed in a conical surface, the reflective surface has a first light-reflecting region extending from a center of the reflective lens to the side frame, the lamp panel has a light-reflecting surface surrounding the LED lamp, the light-reflecting surface has a second light-reflecting region facing the first light-reflecting region, and the light-blocking structure is disposed in the first light-reflecting region and/or the second light-reflecting region.
6. The direct type backlight module as claimed in claim 5, wherein the first light reflecting region is processed by atomization to form the light blocking structure.
7. The direct type backlight module as claimed in claim 5, wherein the second light reflecting region is blackened and/or atomized to form the light blocking structure.
8. The direct-type backlight module of claim 1, wherein the peripheral backlight source comprises a corner backlight source facing the corner of the side frame, light blocking structures are disposed on two outer sides of the corner backlight source, and the two light blocking structures of the corner backlight source are spaced apart from each other to reserve a second light emitting area facing the corner of the side frame between the two light blocking structures.
9. The direct type backlight module as claimed in claim 1, wherein the backlight source comprises a plurality of peripheral light sources and a plurality of inner light sources disposed inside the peripheral light sources, and the peripheral light sources and the inner light sources are uniformly arranged on the bottom plate.
10. A direct type display, comprising the direct type backlight module according to any one of claims 1 to 9.
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| CN201610398566.3A CN106019702A (en) | 2016-06-06 | 2016-06-06 | Direct type backlight module and direct type displayer |
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| CN201610398566.3A CN106019702A (en) | 2016-06-06 | 2016-06-06 | Direct type backlight module and direct type displayer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110568666A (en) * | 2019-09-12 | 2019-12-13 | 青岛海信电器股份有限公司 | Display device and backlight module |
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