CN208025195U - A kind of backlight module - Google Patents
A kind of backlight module Download PDFInfo
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- CN208025195U CN208025195U CN201820591465.2U CN201820591465U CN208025195U CN 208025195 U CN208025195 U CN 208025195U CN 201820591465 U CN201820591465 U CN 201820591465U CN 208025195 U CN208025195 U CN 208025195U
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- diffusion barrier
- backlight module
- diffusion
- guide plate
- corresponding region
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Abstract
The utility model discloses a kind of backlight modules comprising light guide plate, multiple LED light and diffusion barrier, the LED light are set to described light guide plate a side, are formed with clear zone before the LED light, dark space is formed between the adjacent LED light；The diffusion barrier is set to the light guide plate upper surface, is filled with diffusion particle in the diffusion barrier, the diffusion barrier outside visible area is in the diffusion particle density p of the corresponding region in the clear zone1, the diffusion particle density of the diffusion barrier in the corresponding region of the dark space being located at outside visible area is ρ2, wherein ρ1> ρ2.By control diffusion barrier subregion diffusion particle density height to form clear zone before avoiding lamp, the phenomenon that dark space is formed between adjacent LED lamp, and then make backlight module uniform in light emission, reach normal display effect, backlight module production cost provided by the utility model is low, avoids backlight module brightness unevenness.
Description
Technical field
The utility model is related to a kind of display technology fields, more specifically to a kind of backlight module.
Background technology
Multiple LED light 2 are usually arranged in traditional backlight module before light guide plate 1, but are often produced in visible area 3
Raw clear zone 4 and dark space 5, clear zone 4 are primarily due to closely cause very much from LED light 2, and dark space 5 be mainly two adjacent LEDs lamp 2 it
Between insufficient light cause, as shown in Figure 1, for clear zone 4 and dark space 5 simulation drawing, by taking 90 ° of light emitting angle as an example, LED light 2 with
The distance H of light guide plate 1 is smaller, and clear zone 4 is more apparent, and the distance between two adjacent LEDs lamp 2 P is bigger, and dark space 5 is also more apparent, from
And the phenomenon that causing backlight module brightness unevenness.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of backlight modules, spread membrane part area by control
The phenomenon that height of the diffusion particle density in domain is to avoid being formed before lamp clear zone, dark space is formed between adjacent LED lamp, and then make
Backlight module uniform in light emission reaches normal display effect, and backlight module production cost provided by the utility model is low, keeps away
Exempt from backlight module brightness unevenness.
Technical problem to be solved in the utility model is achieved by the following technical programs：
In order to solve the above technical problems, the utility model provides a kind of backlight module comprising light guide plate, multiple LED
Lamp and diffusion barrier, the LED light are set to described light guide plate a side, clear zone, the adjacent LED light are formed with before the LED light
Between be formed with dark space；The diffusion barrier is set to the light guide plate upper surface, is filled with diffusion particle in the diffusion barrier, is located at
The diffusion barrier outside visible area is in the diffusion particle density p of the corresponding region in the clear zone1, it is located at outside visible area
The diffusion barrier in the dark space corresponding region the diffusion particle density be ρ2, wherein ρ1> ρ2。
Further, mist degree of the diffusion barrier in the corresponding region in the clear zone being located at outside visible area is H1, position
In the diffusion barrier outside visible area in the corresponding region of the dark space mist degree be H2, wherein H1> H2。
Further, the diffusion barrier is additionally provided with lenticule in the corresponding region of the dark space.
Further, mist degree of the diffusion barrier in visible area edge corresponding region is H3, wherein H3> H2。
Further, the backlight module further includes lower frame and reflector plate, and the lower frame includes bottom plate and by bottom edge
The side wall upwardly extended, the reflector plate are set on the bottom plate, and the light guide plate is set on the reflector plate.
Further, the side wall is equipped with FPC, and the LED light is set on the FPC.
The utility model has the advantages that：By the height for controlling the diffusion particle density of diffusion barrier subregion
The phenomenon that avoid being formed before lamp clear zone, dark space is formed between adjacent LED lamp, and then make backlight module uniform in light emission, make it
Reach normal display effect, backlight module production cost provided by the utility model is low, avoids backlight module brightness unevenness.
Diffusion barrier positioned at clear zone carries out atomization process, to which some light in clear zone is distributed to other regions, to
The problem of further decreasing brightness unevenness.
Description of the drawings
Fig. 1 is traditional technology clear zone and dark space simulation drawing.
Fig. 2 is a kind of back light module unit structure schematic diagram provided by the utility model.
Fig. 3 is the structural schematic diagram of FPC in Fig. 2.
Fig. 4 is the structural schematic diagram of elastomer block in Fig. 2.
Fig. 5 is the structural schematic diagram of another elastomer block in Fig. 2.
Specific implementation mode
The utility model is described in detail with reference to embodiment, embodiment is only the preferred reality of the utility model
Mode is applied, is not the restriction to the utility model.
Incorporated by reference to Fig. 1 and Fig. 2, a kind of backlight module is provided for the utility model comprising light guide plate 1, multiple LED light
2 and diffusion barrier 6, the LED light 2 is set to 1 a side of the light guide plate, and clear zone 4 is formed with before the LED light 2, adjacent described
Dark space 5 is formed between LED light 2；The diffusion barrier 6 is set to 1 upper surface of the light guide plate, is filled with and expands in the diffusion barrier 6
Shot is sub, and the diffusion barrier 6 outside visible area 3 is in the diffusion particle density p of the corresponding region in the clear zone 41,
The diffusion particle density of the diffusion barrier 6 in the corresponding region of the dark space 5 outside visible area 3 is ρ2, wherein ρ1
> ρ2.It can be by increasing diffusion barrier 6 in the diffusion particle density of 4 part of clear zone, can also be by reducing diffusion barrier 6
It is realized in the density of the diffusion particle of 5 part of dark space, the diffusion particle density of the diffusion barrier 6 outside clear zone 4 and dark space 5 is
ρ3, wherein ρ1> ρ3> ρ2, change outside visible area 3 diffusion particle density can prevent from occurring in visible area 3 it is bright it is dark not
Equal phenomenon.By the height of the diffusion particle density of 6 subregion of control diffusion barrier to avoid formation clear zone 4 before lamp, phase
The phenomenon that dark space 5 are formed between adjacent LED light 2, and then make backlight module uniform in light emission, normal display effect is reached, this
The backlight module production cost that utility model provides is low, avoids backlight module brightness unevenness.
Further, mist degree of the diffusion barrier 6 in the corresponding region in the clear zone 4 being located at outside visible area 3 is H1,
Mist degree of the diffusion barrier 6 in the corresponding region of the dark space 5 outside visible area 3 is H2, wherein H1> H2.It can be with
It is realized by carrying out atomization process to the diffusion barrier 6 positioned at clear zone 4, to which some light in clear zone 4 is distributed to other areas
Domain, the problem of to further decrease brightness unevenness.
Further, the diffusion barrier 6 is additionally provided with lenticule in the corresponding region of the dark space 5, is improved positioned at dark with this
The light emission rate of the diffusion barrier 6 in area 5, the problem of to further decrease brightness unevenness.
Further, mist degree of the diffusion barrier 6 in 33 edge corresponding region of visible area is H3, wherein H3> H2.It can
To be realized by carrying out atomization process to the diffusion barrier 6 positioned at 33 edge of visible area, 33 edge of visible area is improved with this
Lead to the problem of bright line.
Further, the backlight module further includes lower frame 7 and reflector plate, and the lower frame 7 is including bottom plate 71 and by bottom plate
The side wall 72 that 71 edges upwardly extend, the bottom plate 71 are mutually perpendicular to the side wall 72, and the reflector plate is set to the bottom plate
On 71, the light guide plate 1 is set on the reflector plate.
Further, the side wall 72 is equipped with FPC8, and the LED light 2 is set on the FPC8.
Referring to Fig. 3, further, which includes substrate layer 81, the upper surface of substrate layer 81 is provided with circuit layer 82,
The lower surface of substrate layer 81 is provided with metallic radiating layer 83, and set-up mode can be circuit layer 82, the difference of metallic radiating layer 83
By sticking double faced adhesive tape on substrate layer 81.Due to the thinner thickness of substrate layer 81, the heat on FPC8 can pass through substrate layer
81 are diffused into metallic radiating layer 83, which can effectively increase the heat dissipation area of FPC8, play Homogeneouslly-radiating
Effect, to improve the radiating efficiency of FPC8.Wherein substrate layer 81 can be polyimides, polyester, polysulfones or polytetrafluoroethyl-ne
Any one in alkene, double faced adhesive tape are any one in acrylic acid glue-line or epoxy glue layer, which can
Think copper foil layer.
Further, FPC8 further includes at least one through the logical of substrate layer 81, circuit layer 82 and metallic radiating layer 83
Hole 84, the inner wall of the through-hole 84 are provided with the heat-conducting layer contacted with circuit layer 82, metallic radiating layer 83, using good at through-hole 84
Heat conductivility, the circuit layer 82 and metallic radiating layer 83 of 81 both sides of substrate layer can be electrically connected, play good heat conduction work(
Can, and heat-conducting layer can provide heat conduction function, to reach good heat dissipation effect.Wherein, which can be copper glue conductive oil
Layer of ink.
Further, it is provided with the heat carrier being connect with external conductive structure in through-hole 84, the heat carrier is from circuit layer
82 side is connected with external conductive structure, is also in contact with the heat-conducting layer in through-hole 84, so that circuit layer 82, metal dissipate
Thermosphere 83 can be connected by through-hole 84 with external conductive structure, so that the heat in FPC8 passes through in the through-hole 84
Heat carrier diffuses to external conductive structure, to further increase the radiating efficiency of FPC8.Preferably, in order to allow through-hole 84 with
External conductive structure is connected, which is set to the marginal position of FPC8.
Further, the metallic radiating layer 83 be uniform radiating structure, structure can be reticular structure, strip structure,
Any one in wavelike structure or honeycomb structure can preferably improve heat dissipation effect by the uniform radiating structure.
Referring to Fig. 2, further, the backlight module further includes set on the other side of the light guide plate 1 and being set to institute
At least one elastomer block 9 between side wall 72 is stated, being provided with the backlight module of elastomer block 9 can be such that light guide plate 1 firmly supports
It is connected in elastomer block 9, buffering light guide plate 1 avoids the light guide plate 1 in backlight module from being touched with lower frame 7 impact force of lower frame 7
It hits and causes sound, while the service life of light guide plate 1 can also be improved.
Further, 9 both sides of the elastomer block are equipped at least one convex block 91, and convex block 91 is directly abutted to light guide plate 1
On the side wall 72 of lower frame 7, elastomer block 9 can be made to be directed at light guide plate 1 and side wall 72, further increase the resiliency of elastomer block 9
Energy.
Incorporated by reference to Fig. 2, Fig. 4 and Fig. 5, further, with the increase of 9 usage time of elastomer block, elastomer block 9 also can be with
Aging and so that elasticity is died down, in order to increase by 9 buffering percussive force of elastomer block ability and increase elastomer block 9 service life, it is described
Elastomer block 9 is equipped with shock relieve vent 92 between the adjacent convex block 91, and in the present embodiment, which is square hole, works as leaded light
Plate 1 is toward when hitting on 9 direction of elastomer block, and elastomer block 9 can be toward depressed deformation on 92 direction of shock relieve vent, the shock of absorption light guide plate 1
Power, to further realize damping and reduce the purpose of noise.It should be noted that the shock relieve vent 92 can be through-hole 84
It can be blind hole, can also be the endoporus for being built in 9 the inside of elastomer block, be not restricted herein, because falling in the utility model
Protection domain within.What the present embodiment was selected is through-hole 84, and easily fabricated, production cost is low.The shape of the shock relieve vent 92
It can be square hole can also be circular hole, can be selected according to actual conditions, be not restricted herein.
In order to further increase the ability of 9 buffering percussive force of elastomer block, described close to 91 side of the convex block subtracts
It shaking and is all provided with fluted 93 on the inner wall in hole 92, there are two the convex blocks 91 of the present embodiment, so groove 93 also only sets two, it can
Multiple convex blocks 91 and multiple grooves 93 are arranged according to actual conditions, damping device 94, profit are equipped between the adjacent groove 93
The ability of 9 buffering percussive force of elastomer block can further be increased with damping device 94, absorb the impact force of light guide plate 1, from
And it further realizes damping and reduces the purpose of noise.
Further, the damping device 94 be spring or two opposite magnet of homopolarity it is therein any one, utilize
The elastic force of spring or the repulsion of the opposite magnet generation of two homopolarities further increase the energy of 9 buffering percussive force of elastomer block
Power；Spring and magnet are all the standard merchandises being commercially available on the market, and without particularly customized, purchase cost is low, can be at any time
It replaces, it is cost-effective.
In order to further reduce the sound for mutually hitting generation between each component, the elastomer block 9 and the leaded light
The side wall 72 of plate 1 and the lower frame 7 is interference fitted, which is connected on light guide plate 1, another convex block
91 are connected on side wall 72, due to interference fit, may be regarded as an entirety, when automobile is in velocity variations, the backlight module
Sound can minimize, backlight module can be prevented completely and send out the sound, zero noise is realized and weaken and shake.
Above example only expresses the embodiment of the utility model, the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the utility model patent range, as long as the form using equivalent substitution or equivalent transformation is obtained
Technical solution, shall fall within the scope of the present invention.
Claims (6)
1. a kind of backlight module, which is characterized in that it includes：
Light guide plate；
Multiple LED light, are set to described light guide plate a side, are formed with clear zone before the LED light, between the adjacent LED light
It is formed with dark space；
Diffusion barrier is set to the light guide plate upper surface, is filled with diffusion particle in the diffusion barrier, is located at outside visible area
The diffusion barrier is in the diffusion particle density p of the corresponding region in the clear zone1, the diffusion barrier outside visible area
The diffusion particle density in the corresponding region of the dark space is ρ2, wherein ρ1> ρ2。
2. backlight module according to claim 1, which is characterized in that be located at the diffusion barrier outside visible area in described
The mist degree of the corresponding region in clear zone is H1, be located at visible area outside the diffusion barrier in the dark space corresponding region mist degree
For H2, wherein H1> H2。
3. backlight module according to claim 1, which is characterized in that the diffusion barrier in the dark space corresponding region also
Equipped with lenticule.
4. backlight module according to claim 2, which is characterized in that the diffusion barrier is in visible area edge corresponding region
Mist degree be H3, wherein H3> H2。
5. backlight module according to claim 1, which is characterized in that the backlight module further includes lower frame and reflector plate,
The lower frame includes bottom plate and the side wall that is upwardly extended by bottom edge, and the reflector plate is set on the bottom plate, the leaded light
Plate is set on the reflector plate.
6. backlight module according to claim 5, which is characterized in that the side wall is equipped with FPC, and the LED light is set to
On the FPC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820591465.2U CN208025195U (en) | 2018-04-24 | 2018-04-24 | A kind of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820591465.2U CN208025195U (en) | 2018-04-24 | 2018-04-24 | A kind of backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208025195U true CN208025195U (en) | 2018-10-30 |
Family
ID=63911109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820591465.2U Active CN208025195U (en) | 2018-04-24 | 2018-04-24 | A kind of backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208025195U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367009A (en) * | 2020-04-10 | 2020-07-03 | 博讯光电科技(合肥)有限公司 | Light guide plate with novel structure |
| WO2023178833A1 (en) * | 2022-03-25 | 2023-09-28 | 瑞仪光电(苏州)有限公司 | Backlight module and display device |
| US11947153B2 (en) | 2022-03-25 | 2024-04-02 | Radiant Opto-Electronics Corporation | Backlight module and display device |
-
2018
- 2018-04-24 CN CN201820591465.2U patent/CN208025195U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367009A (en) * | 2020-04-10 | 2020-07-03 | 博讯光电科技(合肥)有限公司 | Light guide plate with novel structure |
| WO2023178833A1 (en) * | 2022-03-25 | 2023-09-28 | 瑞仪光电(苏州)有限公司 | Backlight module and display device |
| US11947153B2 (en) | 2022-03-25 | 2024-04-02 | Radiant Opto-Electronics Corporation | Backlight module and display device |
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