CN213303505U

CN213303505U - Light source assembly and display device thereof

Info

Publication number: CN213303505U
Application number: CN202022306417.4U
Authority: CN
Inventors: 朱剑飞; 韩婷婷
Original assignee: Shenzhen Refond Optoelectronics Co Ltd
Current assignee: Shenzhen Refond Optoelectronics Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-05-28
Anticipated expiration: 2030-10-15

Abstract

The utility model relates to a LED luminescent device field, concretely relates to light source subassembly and display device thereof. The light source assembly comprises a substrate, a plurality of light-emitting units arranged on the substrate and a covering colloid covering the light-emitting units, the center distance between the adjacent light-emitting units is 0.9-25 mm, and each light-emitting unit comprises at least one LED chip. Based on specific size limitation, the packaging structure of the light source component is simplified while the better light-emitting effect is met, the using amount of transparent adhesive is reduced, and therefore the production cost can be reduced. The utility model discloses still provide display device, the display device that corresponds is under the prerequisite of the required display effect who satisfies, and its manufacturing cost is lower.

Description

Light source assembly and display device thereof

[ technical field ] A method for producing a semiconductor device

The utility model relates to a LED luminescent device field, in particular to light source subassembly and display device thereof.

[ background of the invention ]

In the display module, a backlight provides light for the display module, and the light emitted by the backlight penetrates through the display module, so that the display module displays images. Backlights are widely used in electronic devices, such as mobile phones, tablet computers, televisions, and other products. In another display module, the LED chip is directly configured to include a combination of a red chip, a blue chip, and a green chip.

No matter the combination of the LED chips is used as a backlight module or directly used as an LED display module, the fixing and packaging modes between the LED chips and the substrate have great influence on the final display effect. In the prior art, in order to use the colloid for the LED chips, the plurality of LED chips are covered under the adhesive layer, which not only causes the waste of the colloid, but also is not favorable for the uniformity of the light emission of the LED chips. Therefore, it is desirable to provide a new technical solution.

[ Utility model ] content

For the technical problem who overcomes the waste of above-mentioned colloid and the luminous homogeneity of LED chip is not good, the utility model provides a light source subassembly and display device thereof.

The utility model discloses a solve above-mentioned technical problem, provide following technical scheme: a light source assembly comprises a substrate, a plurality of light-emitting units arranged on the substrate and a covering colloid covering the light-emitting units, wherein the center distance between the adjacent light-emitting units is 0.9-25 mm, and each light-emitting unit comprises at least one LED chip.

Preferably, the distance between the edges of the adjacent covering colloids is 0.4mm-23mm, one surface of the covering colloid, which is far away from the light-emitting unit, is an arc surface, and the distance between the highest position of the corresponding arc surface of the covering colloid and the light-emitting surface of the light-emitting unit is 100 μm-500 μm.

Preferably, the covering colloid is any one or combination of a transparent covering colloid, a fluorescent covering colloid and a quantum dot covering colloid.

Preferably, a plurality of the light emitting units are distributed at equal intervals.

Preferably, be equipped with the pad structure that is used for fixed luminescence unit on the base plate, luminescence unit passes through tin cream or gold thread and pad structure electric connection preferentially, the cover colloid is kept away from luminescence unit's one side is equipped with lens structure, lens structure locates within the orthographic projection area of luminescence unit light emitting area.

Preferably, a shielding layer is arranged on one surface of the covering colloid, which is far away from the light emitting unit, and the shielding layer is arranged in an orthographic projection area of the light emitting surface of the light emitting unit.

Preferably, a diffusion layer is disposed on a surface of the plurality of covering colloids far away from the light emitting unit, and the diffusion layer may cover the plurality of covering colloids and the substrate between the covering colloids.

The utility model discloses a solve above-mentioned technical problem, still provide following technical scheme: a display device comprises the light source assembly as a backlight source, wherein each light-emitting unit comprises an LED chip, and a display module is arranged in the light-emitting direction of the light source assembly.

The utility model discloses a solve above-mentioned technical problem, still provide following technical scheme: a display device comprising the light source assembly as described above, the light emitting units included in the light source assembly comprising a combination of red, blue and green chips.

Compared with the prior art, the utility model provides a light source subassembly and display device thereof.

The utility model provides a light source subassembly, it includes the base plate, locates a plurality of luminescence units on the base plate to and cover the colloid that covers on luminescence unit, the centre-to-centre spacing of the luminescence unit of adjacent setting is 0.9mm-25 mm. Based on specific size limitation, the packaging structure of the light source component is simplified while the better light-emitting effect is met, the using amount of transparent adhesive is reduced, and therefore the production cost can be reduced.

The utility model discloses in, the cover colloid is kept away from the one side of luminescence unit is the cambered surface, and the distance between the adjacent cover colloid edge that sets up is 0.4mm-23mm, the cover colloid correspond the cambered surface the highest point with the distance between the luminescence unit play plain noodles is 100 mu m-500 mu m. The distance relationship between the covering colloid and the light-emitting surface of the light-emitting unit can ensure that the light emitted by the light-emitting unit can be uniformly emitted, so that the problem of overlarge light intensity at the center of the light-emitting unit is avoided.

The covering colloid is any one or combination of several of transparent covering colloid, fluorescent covering colloid and quantum dot covering colloid so as to meet the requirements of diversified display or backlight.

The present invention is directed to a display device that can obtain a better display or backlight effect by arranging light emitting units at equal intervals.

The utility model discloses in, be equipped with the pad structure that is used for fixed luminescence unit on the base plate, luminescence unit passes through tin cream or gold thread and pad structure electric connection to can satisfy different grade type luminescence unit's installation and the luminescence unit installation demand of difference.

In the utility model, a lens structure is arranged on the side of the covering colloid far away from the light-emitting unit, and the lens structure is arranged in the orthographic projection area of the light-emitting surface of the light-emitting unit; the light emitting uniformity or the display effect of the combination of the cover colloid and the light emitting unit can be improved.

One side of the covering colloid, which is far away from the light-emitting unit, is provided with a shielding layer, and the shielding layer is arranged in an orthographic projection area of the light-emitting surface of the light-emitting unit. The arrangement of the shielding layer can prevent the light emitted from the central light-emitting surface of the light-emitting unit from being directly emitted, so that the local light is too strong, and the light-emitting uniformity or the display effect of the light-emitting unit is affected.

And arranging a diffusion layer on one surface of the covering colloid far away from the light-emitting unit, wherein the diffusion layer can cover the covering colloids and the substrate between the covering colloids. By arranging the diffusion layer, the light emitting uniformity of the combination of the covering colloid and the light emitting unit can be improved.

The utility model also provides a display device, it includes as above the light source subassembly is as the backlight, set up the display module assembly in the light-emitting direction of light source subassembly to can provide a simple structure, cost of manufacture low and display effect good display device.

The utility model also provides a display device, its characterized in that: the light source assembly comprises the light source assembly, and a light emitting unit contained in the light source assembly comprises a combination of a red light chip, a blue light chip and a green light chip. In the display device, the red light chip, the blue light chip and the green light chip can independently emit light without causing unnecessary light mixing, so that the display accuracy can be improved and a better display effect can be obtained.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a light source assembly according to a first embodiment of the present invention.

Fig. 2 is one of the schematic views illustrating the combination state of the cover colloid and the light emitting unit shown in fig. 1.

Fig. 3 is one of the schematic views of the fixing states of the covering colloid and the light emitting unit shown in fig. 1.

Fig. 4 is a second schematic view illustrating a fixing state of the cover encapsulant and the light emitting unit shown in fig. 1.

Fig. 5 is a schematic view of the main viewing angle of the light source module shown in fig. 1.

Fig. 6 is a schematic sectional view along the direction a-a shown in fig. 5.

Fig. 7 is a first schematic structural diagram of the modified embodiment of fig. 6.

Fig. 8 is a second schematic structural view of the modified embodiment of fig. 6.

Fig. 9 is a third schematic structural view of the modified embodiment of fig. 6.

Fig. 10 is a schematic structural diagram of a display device according to a second embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a display device according to a third embodiment of the present invention.

Fig. 12 is a schematic sectional view taken along the direction B-B shown in fig. 11.

The attached drawings indicate the following:

10. a light source assembly; 11. a substrate; 12. a light emitting unit; 121. an LED chip; 13. covering with colloid; 14. a pad structure; 15. a pad structure; 16. gold thread; 17. a lens structure; 18. a shielding layer; 19. a diffusion layer;

20. a display device; 21. a substrate; 22. a light emitting unit; 221. an LED chip; 23. covering with colloid; 29. a diffusion layer; 201. a display module;

30. a display device; 31. a substrate; 32. a light emitting unit; 321. a red light chip; 322. a blue light chip; 323. a green chip; 33. covering with colloid; 34. and a protective layer.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, a first embodiment of the present invention provides a light source assembly 10, which includes a substrate 11, a plurality of light emitting units 12 disposed on the substrate 11, and a covering colloid 13 covering the light emitting units 12. The covering colloid 13 is any one or combination of several of transparent covering colloid, fluorescent covering colloid and quantum dot covering colloid 13. Each of the light emitting units 12 includes at least one LED chip 121, and specifically, the number of the LED chips 121 may be one, three, four, or five, etc. As shown in fig. 1, each light emitting unit 12 includes one of the LED chips 121.

As shown in fig. 2, in some embodiments, each light emitting unit 12 has five light emitting surfaces, and the light emitting angle is preferably 140 ° to 150 °. The covering colloid 13 may be formed on the light emitting unit 12 by dispensing, coating, printing, and the like, and may completely cover all light emitting surfaces of the light emitting unit 12. The adjacent covering colloid 13 is arranged independently.

As shown in fig. 3, a pad structure 14 is disposed on the substrate 11, and after the light emitting unit 12 is fixed on the pad structure 14 by solder paste in a flip-chip manner, a covering colloid 13 covering the light emitting unit 12 is formed.

As shown in fig. 4, a pad structure 15 may also be disposed on the substrate 11, and after the light emitting unit 12 is electrically connected to the pad structure 15 by a gold wire 16, a covering colloid 13 covering the light emitting unit 12 is formed.

The substrate 11 may be made of metal such as copper, aluminum, and alloys thereof, such as stainless steel, brass, and the like; and also can be a flexible plastic carrier, such as epoxy glass fiber board, polyether ether ketone, polyimide, polycarbonate, polyethylene terephthalate, polyethylene succinate, polymethyl methacrylate, polyvinyl chloride, polypropylene, polycarbonate, polyarylate, polyether sulfone, polyethylene naphthalate, and a composite of any combination thereof.

In some preferred embodiments, the substrate 11 is made of polyimide, and the light emitting unit 12 can be fixed on the substrate 11 by means of steel mesh printing, welding or adhesion.

When the substrate 11 is made of other materials, the light emitting unit 12 can be fixed on the substrate 11 by steel screen printing, welding or adhesion.

As shown in fig. 5, a plurality of the light emitting units 12 are distributed with equal spacing. In particular, the light emitting units 12 may also be distributed in an array to obtain a better light emitting effect or display effect.

Referring to fig. 5 and 6, one surface of the covering colloid 13 away from the light emitting unit 12 is an arc surface. As shown in fig. 6, the distance between the highest position of the corresponding arc surface of the covering colloid 13 and the surface of the substrate 11 where the light-emitting unit 12 is disposed is h1, and the distance between the light-emitting surface of the light-emitting unit 12 away from the substrate 12 and the surface of the substrate 11 where the light-emitting unit 12 is disposed is h 2. The distance between the highest point of the corresponding arc surface of the covering colloid 13 and the light emitting surface of the light emitting unit 12 is equal to the difference between h1 and h2, that is, the distance may be 100 μm to 500 μm. In particular, the distance may also be 100 μm to 200 μm, 150 μm to 300 μm, 250 μm to 400 μm, 350 μm to 500 μm.

Referring to fig. 2 and 6, the center-to-center distance e between the adjacent light emitting units 12 is 0.9mm to 25mm, and it can be understood that the center-to-center distance e between the adjacent light emitting units 12 can be understood as the distance between the center points of the adjacent light emitting units 12. The central point of the light emitting unit 12 is the geometric central point of the light emitting unit 12. For example, when the light emitting unit 12 includes one LED chip 121, the center point of the light emitting unit 12 coincides with the center point of the LED chip 121; when the light emitting unit 12 includes three LED chips 121 linearly distributed, the center point of the light emitting unit 12 is the center point of the LED chip 121 disposed in the middle position. Specifically, the center distance e can also be 0.9mm-10mm, 5mm-10mm, 15mm-25mm, 18mm-25mm and the like.

And the distance f between the edges of the covering bodies 13 which are adjacently arranged can be 0.4mm-23mm, specifically, the distance f can also be 0.4mm-5mm, 1mm-10mm, 14mm-20mm, 18mm-23mm and the like.

Referring to fig. 7, in order to improve the light-emitting uniformity of the light source assembly 10, a lens structure 17 may be disposed on a surface of the covering colloid 13 away from the light-emitting unit 12, and the lens structure 17 is disposed in an orthographic projection area of the light-emitting surface of the light-emitting unit 12. The lens structure 17 may be directly formed on the surface of the cover cross layer 13 away from the light emitting unit 12, or may be attached to the surface of the cover cross layer 13 away from the light emitting unit 12 by adhesion.

As shown in fig. 8, a shielding layer 18 may be further disposed on a surface of the covering colloid 13 away from the LED chip, and the shielding layer 18 is disposed in an orthographic projection area of the light emitting surface of the LED chip. The shielding layer 18 can be fixed on the side of the covering colloid 13 away from the LED chip by coating, printing or attaching.

As shown in fig. 9, a diffusion layer 19 is disposed on a surface of the plurality of cover colloids 13 away from the light emitting unit 12, and the diffusion layer 19 may cover the plurality of cover colloids 13 and the surface of the substrate 11 between the plurality of cover colloids 13. The thickness of the diffusion layer 19 may range in value from 0.1 to 30 μm, and specifically, the thickness of the diffusion layer 19 may range from 0.1 to 10 μm, 5 to 13 μm, 1.5 to 14 μm, 2.1 to 26 μm, 3.2 to 28 μm, 7 to 30 μm, and the like.

Based on the light source module 10 provided in the present embodiment, the structure of the light source module 10 can be simplified and the production cost can be reduced while the same light emitting effect is satisfied.

Referring to fig. 10, a display device 20 according to a second embodiment of the present invention includes the light source assembly 10 and the display module 201. The light source assembly 10 includes a substrate 21, a plurality of light emitting units 22 disposed on the substrate 21, and a covering adhesive 23 covering the light emitting units 22. The distance d between the light-emitting surface of the light source assembly 10 and the light-incident surface of the display module 201 is 0-1 mm.

Further, in other embodiments, a diffusion layer 29 may be further disposed on the plurality of covering colloids 23, and the display module 201 may be attached to a surface of the diffusion layer 29 away from the light emitting unit 22.

In this embodiment, other specific conditions related to the substrate 21, the light emitting unit 22, the cover colloid 23 and the diffusion layer 29 are the same as those in the first embodiment, and are not described herein again. In this embodiment, in order to obtain a better light emitting effect, each of the light emitting units 22 may include one LED chip 221.

The present invention provides a display device 20, which can realize the ultra-small distance arrangement between the light source assembly 10 and the display module 201, so as to obtain a display device 20 with large size, light weight, and good display effect, as shown in fig. 11-12, a display device 30 is provided in a third embodiment of the present invention, which includes the light source assembly 10 in the first embodiment. In this embodiment, the light source assembly 10 includes a substrate 31, a plurality of light emitting units 32 disposed on the substrate 31, and a covering adhesive 33 covering the light emitting units 32. As shown in fig. 11, the light emitting unit 32 includes a combination of a red chip 321, a blue chip 322, and a green chip 323. In this embodiment, each of the light emitting units 32 corresponds to a display pixel unit. It is understood that in other embodiments, the light emitting unit 32 may further include a combination of a red chip 321, a blue chip 322, a green chip 323, and a white chip (not shown). In this embodiment, other specific conditions related to the substrate 31, the light emitting unit 32, and the covering colloid 33 are the same as those in the first embodiment, and are not described herein again.

Further, as shown in fig. 12, the display device 30 may further include a protective layer 34 covering the surface of the substrate 31 provided with the light emitting units 32 and the covering colloid 33, and the protective layer 34 may be formed on the basis of the covering colloid 33 by the protective layer 34.

The display device 30 may be a flexible display, that is, the substrate 31 may be made of a flexible material.

Compared with the prior art, the utility model provides a light source subassembly and display device has following beneficial effect:

The utility model discloses in, the cover colloid is kept away from the one side of luminescence unit is the cambered surface, and the distance between the adjacent cover colloid edge that sets up is 0.4mm-23mm, the cover colloid correspond the cambered surface the highest point with the distance between the luminescence unit play plain noodles is 100 mu m-500 mu m. The distance relationship between the covering colloid and the light-emitting surface of the light-emitting unit can ensure that the light emitted by the light-emitting unit can be uniformly emitted, so as to avoid the problem that the light intensity at the center of the light-emitting unit is overlarge to influence the light-emitting uniformity.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and all modifications, equivalents, improvements and the like that are made within the principles of the present invention should be included in the scope of the present invention.

Claims

1. A light source assembly, characterized by: the LED chip comprises a substrate, a plurality of light-emitting units arranged on the substrate and a covering colloid covering the light-emitting units, wherein the center distance between the adjacent light-emitting units is 0.9-25 mm, and each light-emitting unit comprises at least one LED chip.

2. The light source module as recited in claim 1, wherein: one surface of the covering colloid, which is far away from the light-emitting unit, is an arc surface, the distance between the edges of the adjacent covering colloids is 0.5mm-23mm, and the distance between the highest position of the covering colloid, which corresponds to the arc surface, and the light-emitting surface of the light-emitting unit is 100 μm-500 μm.

3. The light source module as recited in claim 1, wherein: the covering colloid is any one or combination of a plurality of transparent covering colloids, fluorescent covering colloids and quantum dot covering colloids.

4. The light source module as recited in claim 1, wherein: the light-emitting units are distributed at equal intervals.

5. The light source module as recited in claim 1, wherein: the substrate is provided with a pad structure for fixing the light-emitting unit, and the light-emitting unit is electrically connected with the pad structure through solder paste or gold wires.

6. The light source module as recited in claim 1, wherein: and a lens structure is arranged on one surface of the covering colloid, which is far away from the light-emitting unit, and the lens structure is arranged in a orthographic projection area of the light-emitting surface of the light-emitting unit.

7. The light source module as recited in claim 1, wherein: one side of the covering colloid, which is far away from the light-emitting unit, is provided with a shielding layer, and the shielding layer is arranged in an orthographic projection area of the light-emitting surface of the light-emitting unit.

8. The light source module as recited in claim 1, wherein: and arranging a diffusion layer on one surface of the covering colloid far away from the light-emitting unit, wherein the diffusion layer can cover the covering colloids and the substrate between the covering colloids.

9. A display device, characterized in that: the backlight source assembly comprises the light source assembly as claimed in any one of claims 1 to 8, wherein each light emitting unit comprises an LED chip, and a display module is disposed in the light emitting direction of the light source assembly.

10. A display device, characterized in that: comprising a light source assembly according to any one of claims 1-8, the light-emitting units comprised in the light source assembly comprising a combination of red, blue and green chips.