CN109856859A - A kind of side entrance back module and display equipment - Google Patents
A kind of side entrance back module and display equipment Download PDFInfo
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- CN109856859A CN109856859A CN201910237301.9A CN201910237301A CN109856859A CN 109856859 A CN109856859 A CN 109856859A CN 201910237301 A CN201910237301 A CN 201910237301A CN 109856859 A CN109856859 A CN 109856859A
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- site
- side entrance
- entrance back
- back module
- reflector plate
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Abstract
The present invention relates to display equipment technical fields, specifically disclose a kind of side entrance back module and display equipment.The backlight module includes light guide plate and reflector plate, and the side of light guide plate is provided with UVLED；Reflector plate is set to guide-lighting back, and site is printed on reflector plate, and site is made of fluorescent powder and adhesive.The light source of side entrance back module provided by the invention uses UVLED, eliminate traditional LED internal excitation process, the excitation of fluorescent powder is placed in reflector plate surface, calorific value is greatly reduced, heat dissipation aluminum strip is saved, to simplify radiator structure, reduces heat dissipation cost, and light efficiency gets a promotion, the service life of light source is extended；UV trimmed book body is invisible, is blocked without using traditional center, reduces cost, can easily realize ultra-thin ultra-narrow frame and Rimless shape-designing；The net-point printing processing procedure made of fluorescent powder and adhesive is simple, yield is high, at low cost.
Description
Technical field
The present invention relates to display equipment technical field more particularly to a kind of side entrance back module and display equipment.
Background technique
Display equipment is a kind of equipment that can be exported image or feel information, including television set, display and advertisement machine
Deng.Display equipment generally comprises backlight module and liquid-crystalline glasses 6 ', and backlight module can be divided into according to the setting position of incidence surface
Side entrance back module and down straight aphototropism mode set.The structure of currently used side entrance back module is as shown in Figure 1, include back
Plate 1 ' and the light guide plate 4 ' being mounted on backboard 1 ', are provided with reflector plate 3 ' between light guide plate 4 ' and backboard 1 ', on light guide plate 4 '
It is provided with optical diaphragm 5 ', center 8 ' sets above-mentioned backboard 1 ', reflector plate 3 ', light guide plate 4 ' and 5 ' frame of optical diaphragm.It leads
The incidence surface of tabula rasa 4 ' is arranged in parallel with 2 ' lamp bar of LED, and 2 ' lamp bar of LED is installed on heat sink strip 7 '.
The main material of light guide plate 4 ' is PMMA or MS, and refractive index is much larger than air, and the light that LED 2 ' is issued is from entering
It after smooth surface enters light guide plate 4 ', is totally reflected inside it, light can not be gone out from the front of light guide plate 4 ', so existing light guide plate 4 '
Lower surface needs printing net-point 41 ' to break its internal total reflection.As shown in Fig. 2, setting light enters light guide plate 4 ' from air
Incidence angle is α1, corresponding refraction angle is α2, corresponding light guide plate 4 ' to the incidence angle into air is α3, the folding of light guide plate 4 '
Penetrating rate is n, and the refractive index of air is 1, critical angle β.According to Snell's law, it can be deduced that following equation: sin α1=sin
α2* n, sin β=1/n, therefore deduces that α3=90 ° of-arcsinsin α1/n.The maximum light-emitting angle of LED 2 ' is 120 °, i.e.,
α1≤ 30 °, 4 ' refractive index n of light guide plate is generally 1.49, it can thus be concluded that 90 ° >=α3>=70.4 °, and critical angle β=42.2 °, also
It is to say α242.2 ° of < just have light from 4 ' front outgoing of light guide plate, it is seen that the light that LED 2 ' is issued can be complete after entering light guide plate 4 '
Reflection, needs to destroy its total reflection by the site 41 ' of 4 ' bottom surface of light guide plate.
The prior art is primarily present following problems: 41 ' the material main component of site of light guide plate 4 ' is silica and tree
Rouge, 41 ' processing procedure of printing net-point is complicated, time-consuming, yield is low, its cost is caused to remain high；Existing side entrance back module is set
Meter technology is unable to fully realize narrow frame moulding, it may appear that light leakage or bright border visual effect problem；Traditional LED 2 ' uses blue light chip
Yellow fluorescent powder is excited to generate white light, excitation heat directly improves the operating temperature of LED 2 ', influences the luminous effect of LED 2 '
Rate and service life.In addition, traditional site 41 ' is mostly loose conical structure and surface is rougher, net during transportation
The problems such as relative friction can occur for point 41 ' and reflector plate 3 ', and site 41 ' is easy to appear scratch, falls off, causes visual effect bad, needs
Site 41 ' is protected using high cost reflector plate 3 ' and cannot be prevented completely.
Summary of the invention
It is an object of the present invention to provide a kind of side entrance back modules, can simplify radiator structure, reduce light source hair
Heat improves radiating efficiency and promotes light efficiency, while can be realized ultra-thin ultra-narrow frame and rimless design.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of side entrance back module characterized by comprising
Light guide plate, side are provided with UVLED；
Reflector plate is set to the guide-lighting back, is printed with site on the reflector plate, the site is by fluorescent powder
It is made with adhesive.
As the optimal technical scheme of above-mentioned side entrance back module, the site is elastic construction and smooth outer surface
As the optimal technical scheme of above-mentioned side entrance back module, the fluorescent powder is tri- mixture of colours fluorescent powder of R, G, B.
As the optimal technical scheme of above-mentioned side entrance back module, described adhesive is UV resin glue.
As the optimal technical scheme of above-mentioned side entrance back module, the site is on the length direction of the reflector plate
Arrangement density be gradually reduced from centre to both ends.
As the optimal technical scheme of above-mentioned side entrance back module, the site is in the width direction of the reflector plate
Arrangement density curve function are as follows: Φ=A*y^B+C, wherein Φ is density value, and y is width value, and A, B are coefficient of curvature, and C is
Design the minimum value of density.
As the optimal technical scheme of above-mentioned side entrance back module, the site is locally reduced in the density of light emission side.
As the optimal technical scheme of above-mentioned side entrance back module, the site is hemispherical projections.
As the optimal technical scheme of above-mentioned side entrance back module, the value range of the diameter of the site is
0.25mm-0.3mm。
It is another object of the present invention to provide a kind of display equipment, radiator structure is simplified, radiating efficiency improves, light efficiency
It is promoted, while can realize ultra-thin ultra-narrow frame and rimless design.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of display equipment, including above-mentioned side entrance back module.
Compared with prior art, advantages of the present invention and beneficial effect are:
The light source of side entrance back module provided by the invention uses UVLED, is printed with site on reflector plate, site is by glimmering
Light powder and adhesive are made.Traditional LED internal excitation process is eliminated, the excitation of fluorescent powder is placed in reflector plate surface, is sent out
Heat is greatly reduced, and saves heat dissipation aluminum strip, to simplify radiator structure, reduces heat dissipation cost, and light efficiency gets a promotion, light source
Service life is extended；UV trimmed book body is invisible, is blocked without using traditional center, and cost is reduced, can be easily real
Existing ultra-thin ultra-narrow frame and Rimless shape-designing；The net-point printing processing procedure made of fluorescent powder and adhesive is simple, yield
It is high, at low cost.
Display equipment cooling structure provided by the invention is simplified, radiating efficiency improves, light efficiency is promoted, while can realized
Ultra-thin ultra-narrow frame and rimless design.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the display equipment that the prior art provides；
Fig. 2 is the principle of luminosity schematic diagram for the side entrance back module that the prior art provides；
Fig. 3 is the structural schematic diagram for the side entrance back module that the specific embodiment of the invention provides；
Fig. 4 is the structural schematic diagram for the reflector plate that the specific embodiment of the invention provides；
Fig. 5 is the flat square xoy coordinate system that the site that the specific embodiment of the invention provides is distributed on reflector plate
Schematic diagram；
Fig. 6 is arrangement density schematic diagram of the site in x-axis direction of specific embodiment of the invention offer；
Fig. 7 is arrangement density schematic diagram of the site in y-axis direction of specific embodiment of the invention offer.
In figure:
1 '-backboard；2'-LED；3 '-reflector plates；4 '-light guide plates；41 '-sites；5 '-optical diaphragms；6 '-liquid-crystalline glasses；
7 '-heat sink strips；8 '-centers；
1- backboard；2-UVLED；3- reflector plate；The site 31-；4- light guide plate.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.It is understood that
It is that the specific embodiments described herein are used only for explaining the present invention rather than limiting the invention.It further needs exist for
It is bright, only the parts related to the present invention are shown for ease of description, in attached drawing and it is not all.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
The embodiment provides a kind of display equipment, which can be TV, display, advertisement machine
Deng including backlight module and the display panel being arranged in above backlight module, it is equal that backlight module for display panel provides brightness
Even backlight, display panel by control each pixel light by situation, control the display situation of each pixel,
To show image.As shown in figure 3, in the present embodiment, backlight module is side entrance back module, mainly include backboard 1,
The structures such as light source, reflector plate 3, light guide plate 4.
In side entrance back module provided in this embodiment, it is provided with light source on the ground side edgefold of backboard 1, light source is set to
The side of light guide plate 4.Light source uses UVLED2, UVLED2, that is, UV LED that can issue the black light of Single wavelength,
UVLED2 is using individual packages and is free of fluorescent powder.Reflector plate 3 is set to 1 front of backboard, 4 back side of light guide plate, and reflector plate 3 uses
Common material is printed with site 31 on upper surface, and site 31 is made of fluorescent powder and adhesive.It is led for breaking site
The total reflection of 4 internal light of tabula rasa.
Further, fluorescent powder is R (red), G (green), three mixture of colours fluorescent powder of B (indigo plant), and adhesive is UV resin glue
Water.On printing process, it is only necessary to mix three-color phosphor, UV resin glue and diluent according to a certain percentage, stir
It mixes uniformly, is needed on 3 surface of reflector plate by screen printing techniques, then solidified by UV curing apparatus.Compared to existing
Have in technology that the site 31 made of fluorescent powder and adhesive prints in 4 lower surface printing net-point 41 ' of light guide plate, present embodiment
Brush processing procedure is simple to operation, yield is high and cost is relatively low.
As shown in figure 3, the UV light that UVLED2 is issued is totally reflected after entering light guide plate 4, UV light reaches site 31 and swashs
R, G, B three-color phosphor in hairnet point 31, which forms R, G, B three coloured light and is mixed into white light, reenters light guide plate 4, from leaded light
The upper surface of plate 4 goes out light.
Different from traditional site 41 ', the site 31 in the present embodiment is elastic construction and smooth outer surface, can be reduced
Reflector plate 3 and 4 relative motion of light guide plate generate in transportational process scratch, scratch and the problems such as fall off, improve the machine of mould group
Tool reliability improves Product transport yield.Optionally, as shown in figure 4, the upper surface of reflector plate 3 is according to certain arrangement rule
Print several sites 31.
Side entrance back module provided by the invention uses UVLED2,4 bare board of light guide plate and upper surface printing net-point 31
Reflector plate 3 form Optical Switching System, have following advantage.Firstly, the light source of the system uses UVLED technology, UVLED2
For cold light source, non-thermal radiation, and the internal excitation process of traditional LED is eliminated, by the excitation transposition of fluorescent powder in sheet emitting table
Face, so that calorific value is greatly reduced, light efficiency gets a promotion, and the service life of light source is extended；And reflector plate 3 is filled with backboard 1
Tap touching, the heat that UV light excitated fluorescent powder generates can directly be exported by metal backing 1, and launching efficiency and heat dissipation is substantially improved
Efficiency, saving heat dissipation aluminum strip to simplify radiator structure reduces heat dissipation cost；Secondly, UV trimmed book body is invisible, it will not
There is the visual effects problem such as light leakage and bright border, therefore do not need to carry out light-blocking design using traditional center, while reducing cost
It can also easily realize ultra-thin ultra-narrow frame and Rimless shape-designing.
As shown in figure 5, the length direction of reflector plate 3 (is parallel to the side of lamp bar using the ground side center of reflector plate 3 as origin o
To) it is x-axis, the width direction (perpendicular to the direction of lamp bar) of reflector plate 3 is y-axis, establishes flat square xoy coordinate system.Below
31 arrangement regulation of site to site 31 in x-axis and y-axis is illustrated respectively.
As shown in fig. 6, on x-axis direction (length direction of reflector plate 3), the arrangement density of site 31 is from centre to both ends
It is gradually reduced, the normal distribution trend of similar " small small hill " shape, the smooth transition of density curve top is presented.Close to intermediate region
31 density of site it is slightly higher, the brightness value of central area can be promoted.
As shown in fig. 7, in y-axis direction (width direction of reflector plate 3), the arrangement density curve function of site 31 are as follows:
Φ=A*y^B+C, wherein Φ is density value, and y is width value, and A, B are coefficient of curvature, and C is the minimum value for designing density.Due to
Light emission side is easy to appear bright border phenomenon, so site 31 locally reduces downward in the density of light emission side, so that integrated curved is presented
" spoon shape ", as " spoon tail " shape is presented in curve end in Fig. 7.
Optionally, in the present embodiment, site 31 is hemispherical projections, and the value range of diameter is 0.25mm-
0.3mm.It is understood that in other embodiments, site 31 can also be other shapes, and the structure setting of site 31
For the conventional arrangement of this field, the present embodiment is no longer repeated.
Obviously, above embodiment of the invention is just for the sake of clearly illustrating examples made by the present invention, and is not
Restriction to embodiments of the present invention.For those of ordinary skill in the art, on the basis of the above description also
It can make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in right of the present invention and want
Within the protection scope asked.
Claims (10)
1. a kind of side entrance back module characterized by comprising
Light guide plate (4), side are provided with UVLED (2)；
Reflector plate (3) is set to the light guide plate (4) back side, is printed with site (31), the net on the reflector plate (3)
Point (31) is made of fluorescent powder and adhesive.
2. side entrance back module according to claim 1, which is characterized in that the site (31) is elastic construction and outer
Surface is smooth.
3. side entrance back module according to claim 1, which is characterized in that the fluorescent powder is tri- mixture of colours of R, G, B
Fluorescent powder.
4. side entrance back module according to claim 1, which is characterized in that described adhesive is UV resin glue.
5. side entrance back module according to claim 1, which is characterized in that the site (31) is in the reflector plate
(3) the arrangement density on length direction is gradually reduced from centre to both ends.
6. side entrance back module according to claim 1, which is characterized in that the site (31) is in the reflector plate
(3) the arrangement density curve function in width direction are as follows: Φ=A*y^B+C, wherein Φ is density value, and y is width value, A, B
For coefficient of curvature, C is the minimum value for designing density.
7. side entrance back module according to claim 6, which is characterized in that density of the site (31) in light emission side
It locally reduces.
8. side entrance back module according to claim 1, which is characterized in that the site (31) is hemispherical projections.
9. side entrance back module according to claim 8, which is characterized in that the value model of the diameter of the site (31)
It encloses for 0.25mm-0.3mm.
10. a kind of display equipment, which is characterized in that including such as described in any item side entrance back modules of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237301.9A CN109856859A (en) | 2019-03-27 | 2019-03-27 | A kind of side entrance back module and display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237301.9A CN109856859A (en) | 2019-03-27 | 2019-03-27 | A kind of side entrance back module and display equipment |
Publications (1)
| Publication Number | Publication Date |
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| CN109856859A true CN109856859A (en) | 2019-06-07 |
Family
ID=66902150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910237301.9A Pending CN109856859A (en) | 2019-03-27 | 2019-03-27 | A kind of side entrance back module and display equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609418A (en) * | 2019-09-24 | 2019-12-24 | 深圳创维－Rgb电子有限公司 | Backlight module and display device |
| CN112198584A (en) * | 2020-10-26 | 2021-01-08 | 武汉华星光电技术有限公司 | Light guide plate |
| CN115327817A (en) * | 2022-08-31 | 2022-11-11 | 合肥京东方光电科技有限公司 | Backlight module and display module |
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Application publication date: 20190607 |