CN209216470U

CN209216470U - A kind of light source assembly and display module

Info

Publication number: CN209216470U
Application number: CN201821839319.3U
Authority: CN
Inventors: 韩婷婷; 朱剑飞; 龚伟斌
Original assignee: Shenzhen Refond Optoelectronics Co Ltd
Current assignee: Shenzhen Refond Optoelectronics Co Ltd
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2019-08-06
Anticipated expiration: 2028-11-08

Abstract

The utility model relates to LED field, in particular to a kind of light source assembly comprising multiple pixel units, multiple electric connection structures and substrate, substrate include opposite first surface and second surface；Pixel unit is arranged on the first surface, and electric connection structure is arranged on a second surface；Any pixel unit includes at least three pixels, and pixel includes LED chip, and LED chip includes anode and cathode；The LED chip of at least three pixels is electrically connected in a manner of cathode with an electric connection structure by total anode or altogether.A kind of display module, it includes above-mentioned light source assembly, display module further includes supporting element and multiple FPC plates, FPC plate on multiple light sources component and supporting element corresponds, anode or cathode connection type can reduce LED chip corresponding positive pole zone on a second surface altogether altogether, it is smaller so as to area shared by electric connection structure on the second surface that makes, in order to more conductive structures settable on the substrate of same homalographic or other electrical components.

Description

A kind of light source assembly and display module

[technical field]

The utility model relates to technical field of LED display more particularly to a kind of light source assembly and display modules.

[background technique]

With the growing interest that consumer is lightening to electronic equipment, the requirement lightening for electronic equipment is increasingly It is high.

However existing electronic equipment include light source assembly in include substrate, luminescence chip and filter layer, wherein shining For the anode and cathode independence scolding tin of chip on substrate, i.e., the anode of luminescence chip and cathode have independent soldering tin, make It is larger at the overall volume of component, more luminescence chips can not be set on the same substrate, to reduce light source assembly Light-out effect.

[utility model content]

In order to overcome the problems, such as that existing light source assembly light-out effect is bad, the utility model provide a kind of light source assembly and Display module.

The utility model is in order to solve the above technical problems, one technical solution of offer is as follows: a kind of light source assembly, light source group Part includes multiple pixel units, multiple electric connection structures and substrate, and the substrate includes opposite first surface and second surface； On the first surface, the electric connection structure is arranged on the second surface for the pixel unit setting；It is any described Pixel unit includes at least three pixels, and the pixel includes LED chip, and the LED chip includes anode and cathode；Extremely The LED chip of few three pixels is electrically connected in a manner of cathode with an electric connection structure by total anode or altogether；One institute It states electric connection structure and corresponds to the region area of the second surface and correspond to the area of the first surface less than a pixel unit Domain area.

Preferably, the electric connection structure includes at least four electrode slices, and at least electrode slice includes a positive plate, more The anode of a independent negative electrode tab, at least three LED chips is electrically connected with the positive plate, at least three LED The cathode of chip is electrically connected from the different negative electrode tabs respectively.Preferably, the pixel unit includes three pixels, the electricity Connection structure includes the first negative electrode tab, the second negative electrode tab and third negative electrode tab, the positive plate, the first negative electrode tab, the second cathode Piece and third negative electrode tab are with " matrix pattern " Structural assignments on the second surface.Preferably, the substrate further includes being located at Pad and conducting wire on the first surface, the pad are electrically connected with the LED chip, and the pad is led with described Electric line electrical connection.

Preferably, the substrate further includes multiple through-holes, and the through-hole runs through the substrate, is filled with and leads in the through-hole The LED chip is electrically connected by electric material with the electric connection structure.

Preferably, the substrate is any of hard substrate or soft substrate plate, and the substrate thickness is 10 μm of -2mm.

Preferably, the pixel further includes a light conversion layer, and the light conversion layer cladding closes the LED chip；One Three pixels of the pixel unit successively issue blue, red, green color light.

Preferably, multiple LED chip intervals are arranged, and the spacing between two LED chips of arbitrary neighborhood is 0.01mm-0.75mm；The LED chip is rectangle, the length 0.01mm-1mm of the LED chip, the width of the LED chip For 0.01mm-0.5mm；Or the LED chip is circle, a diameter of 0.01mm-0.5mm.

Preferably, when the shape of the LED chip and the light source assembly is rectangle, the long side of the light source assembly It is arranged in parallel with the long side of the LED chip, the broadside of the light source assembly and the short side of the LED chip are arranged in parallel.

Display module provided by the utility model comprising light source assembly described in as above, the display module further include Carrier support, the carrier include multiple FPC plates, multiple light source assembly matrix arrangements and are set to the carrier supported On part, the supporting element includes slab construction or frame structure；Or the display module further includes FPC plate, the light source group Connection structure on part and the FPC plate corresponds.

Compared with prior art,

A kind of light source assembly provided by the utility model comprising multiple pixel units, multiple electric connection structures and substrate, The substrate includes opposite first surface and second surface, and the pixel unit is arranged on the first surface, the electricity Connection structure is arranged on the second surface.Any pixel unit include at least three pixels, described at least three Pixel includes at least three LED chips, at least three LED chips by total anode or altogether in a manner of cathode be electrically connected described in one Binding structure is electrically connected, and an electric connection structure corresponds to the region area of the second surface less than a pixel unit pair Answer the region area of the first surface.It is corresponding in second surface that pixel unit positive or that cathode mode connects altogether altogether is set The region area pixel unit that cathode mode connects than not set anode altogether or altogether is small in the corresponding region area of second surface, then More electric connection structures can be set in second surface, it is corresponding, so that it may so that LED chip is more total than not set on first surface The pixel unit of anode or total cathode can increase more LED chips on the same substrate.The light source assembly further includes that a light turns Layer is changed, the light conversion layer can be fluorescence coating or quantum dot layer, and the LED chip projects uniformly after light conversion layer The light of blue, red, green three kinds of colors is any, then the uniform light that multiple pixel units project different colours forms image.

One electric connection structure includes four electrode slices, and the electrode slice includes positive plate, the first negative electrode tab, second negative Pole piece and third negative electrode tab, the positive plate, the first negative electrode tab, the second negative electrode tab and third negative electrode tab are in sphere of movements for the elephants shape knot Structure arrangement, reduces the region area of electric connection structure.

The length a of the LED chip is up to 1mm, and length a can also be 0.01mm-1mm, the width of the LED chip B is up to 0.5mm, and width b can also be 0.01mm-0.5mm.The thickness h of the substrate is up to 2mm, the thickness of the substrate Spending h can also be 10 μm of -2mm.The LED chip is circle, and diameter is up to 0.5mm, and diameter can also be 0.01mm- 0.5mm.Using the small-sized of the spacing e for stating LED chip and limiting any two LED chip of small size, so that being set to LED chip on first surface can be arranged more closely, the small-sized of the thickness h of substrate, allow the more frivolous of light source assembly 1 Change.

Display module provided by the utility model has such as the identical beneficial effect of above-mentioned light source assembly comprising described Light source assembly, the display module further include a supporting element, and the supporting element includes multiple FPC plates, multiple light sources module matrix Arrangement is on the supporting element, and the FPC plate on the light source assembly and supporting element corresponds, and the light source assembly is due to it LED chip arrangement is closer, then can be display module has more preferably display effect, and light source assembly has the binding that is electrically connected Structure, can directly be attached on the FPC plate of the supporting element can be achieved with electrically conducting.

[Detailed description of the invention]

Fig. 1 is the overall structure diagram of the utility model first embodiment light source assembly.

Fig. 2 a is section view of the light source assembly provided in the utility model first embodiment shown in Fig. 1 along the direction I-I Structural schematic diagram.

Fig. 2 b be in Fig. 1 on substrate in a pixel unit LED chip arrangement schematic diagram.

The overall structure diagram of another embodiment of light source assembly in Fig. 3 the utility model first embodiment.

Fig. 4 is the arrangement schematic diagram of pixel in a pixel unit in Fig. 3.

Fig. 5 a is the structural schematic diagram of the first surface of substrate in the utility model first embodiment light source assembly.

Fig. 5 b is the structural schematic diagram of an electric connection structure of the utility model first embodiment light source assembly.

Fig. 6 be in Fig. 1 on substrate in pixel unit part LED chip structural schematic diagram.

Fig. 7 is the overall structure diagram of display module provided in the utility model second embodiment.

Description of symbols:

1, light source assembly；11, substrate；12, pixel unit；13, electric connection structure；14, through-hole；15, light conversion layer；111, First surface；112, second surface；113, pad；114, conducting wire；121, pixel；1211, LED chip；131, electrode Piece；1311, positive plate；1312, the first negative electrode tab；1313, the second negative electrode tab；1314, third negative electrode tab；

2, display module；21, supporting element.

[specific embodiment]

In order to make the purpose of this utility model, technical solution and advantage are more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to solve The utility model is released, is not used to limit the utility model.

Fig. 1 and Fig. 2 a is please referred to, the first embodiment of the utility model provides a kind of light source assembly 1 comprising substrate 11, Multiple pixel units 12 and multiple electric connection structures 13 on the substrate 11 are set, and substrate 11 includes opposite first surface 111 With second surface 112.The pixel unit 12 is set on the first surface 111 of substrate 11.The electric connection structure 13 is arranged In the second surface 112 of substrate 11, the pixel unit 12 is electrically connected with the electric connection structure 13.One pixel unit 12 is powered It is capable of emitting it is blue, red, green in any color light.

Incorporated by reference to Fig. 1, Fig. 2 a and Fig. 2 b, a pixel unit 12 includes three pixels 121, a pixel 121 include a LED chip 1211 and light conversion layer 15 corresponding with the LED chip, and the cladding of the light conversion layer 15 is closed The LED chip 1211 is covered in the main light output surface of LED chip 1211.The light that LED chip 1211 issues passes through light conversion layer The light of needs is obtained later.Specifically, the light that a LED chip 1211 issues issues any in blue, red, green by light conversion layer 15 The light of kind color.

The light conversion layer 15 can be to be any in fluorescence coating or quantum dot layer, and the LED chip 1211 turns by light Change after layer 15 project uniform blue, red, green three kinds of colors light it is any, then multiple pixel units injection different colours is uniform Light formed image.

The LED chip 1211 is arrangement mode as shown in Figure 1, i.e., described 1211 matrix arrangement of LED chip is in base On plate 11, the spacing between any adjacent LED chip 1211 is equal.

Optionally, in some other embodiment of the present embodiment, the LED chip 1211 is arranged as shown in Figure 3 Column mode, i.e., such as the row in the shape of " pin " of three LED chips 1211 in Fig. 4 in three pixels 121 of single pixel unit 12 Cloth, pixel unit 12 form arrangement mode as shown in Figure 3 on the substrate 11.

Incorporated by reference to Fig. 5 a and Fig. 5 b, multiple pads 113 and conducting wire are provided on the first surface 111 of the substrate 11 114, any, the pad 113 and the conductor wire of corresponding 1211 positive or negative pole of LED chip of a pad 113 Road 114 is electrically connected.LED chip 1211 can be erected on two pads 113 being disposed adjacent.

In conjunction with shown in Fig. 5 a and Fig. 5 b, through-hole 14 is provided on the substrate 11, and the through-hole 14 runs through the base Plate 11, the through-hole 14 is interior to be filled with conductive material, the pixel unit 12 is electrically connected with the electric connection structure 13, a picture The corresponding electric connection structure 13 of plain unit 12.

As illustrated in fig. 5b, an electric connection structure 13 includes four electrode slices 131, and the electrode slice 131 includes just Pole piece 1311, the first negative electrode tab 1312, the second negative electrode tab 1313 and third negative electrode tab 1314, the positive plate 1311, first Negative electrode tab 1312, the second negative electrode tab 1313 and third negative electrode tab 1314 be in sphere of movements for the elephants shape structural arrangement, the positive plate 1311, First negative electrode tab 1312, the second negative electrode tab 1313 and third negative electrode tab 1314 between any two be equipped with insulating materials (not shown) with Prevent short circuit.

The anode and first surface 111 of corresponding three LED chips 1211 of three pixels in the pixel unit 12 On the electrical connection of three pads 113, the pads 113 of three access anodes of LED chip 1211 by conducting wire 114 electrically It is connected on the positive plate 1311 on second surface 112, on the cathode and first surface 111 of three LED chips 1211 Three pads 113 are electrically connected, and the pad 113 of three access 1211 cathode of LED chip is electrically connected by conducting wire 114 In the first negative electrode tab 1312, the second negative electrode tab 1313 and third negative electrode tab 1314 on second surface 112.

Optionally, the material based on the electrode slice 131, the electrode slice 131 may include but be not only restricted to: gold electrode Piece, silver electrode film, copper electrode piece, carbons electrode slice, Carbon Nanotubes Electrode piece etc..

Optionally, the cathode of three LED chips 1211 can be electrically connected with the positive plate 1311, three LED The anode of chip 1211 can successively be electrically connected with first negative electrode tab 1312, the second negative electrode tab 1313 and third negative electrode tab 1314 It connects, i.e., with the connection of above-mentioned anode altogether on the contrary, then the pixel unit 12 is set as total cathode.

Not set anode altogether or altogether corresponding six electrode slices 131 of pixel unit 12 of cathode in the prior art, this reality With anode or altogether corresponding four electrode slices 131 of negative pole structure directly reduce and are electrically connected knot on second surface 112 altogether in novel Positive pole zone corresponding to structure 13, so that right in second surface 112 with pixel unit 12 positive or that cathode mode connects altogether altogether The region area the answered pixel unit 12 that cathode mode connects than not set anode altogether or altogether is in the corresponding area surface of second surface Product is small, then more electric connection structures 13 can be arranged in second surface 112, corresponding, so that it may so that on first surface 111 Than not set anode altogether or altogether, the pixel unit 13 of cathode can increase more LED chips to LED chip 1211 on the same substrate 1211。

One pixel unit 12 is S1 in the corresponding region area of first surface 111, it is preferable that S 1.515mm², institute An electric connection structure 13 is stated in the corresponding area S2 of second surface 112, it is preferable that S1 is less than S2.

One pixel unit 12 is 5X 10 in the corresponding region area of first surface 111^-4mm², described one is electrically connected binding Structure 13 is less than 5X 10 in the corresponding region area of second surface 112^-4mm².A then electric connection structure 13 corresponding described second Region area of the region area on surface 112 less than the corresponding first surface 111 of the pixel unit 12, so that it may the More electric connection structures 13 are arranged in two surfaces 112, corresponding, so that it may increase more LED chips 1211 on the same substrate.

It is appreciated that the pixel quantity of pixel unit is not limited to three, it is also possible to multiple, the institute of multiple pixels LED chip is stated to be electrically connected in a manner of total anode with an electric connection structure.Accordingly, electric connection structure includes an anode Piece and at least three negative electrode tabs.The LED chip anode of multiple pixels is connect with positive plate, cathode respectively from it is different Negative electrode tab connection.

When the electric connection structure 13 is connect with peripheral device, the electric current flows to the conduction by electric connection structure 13 Route 114, the conducting wire 114 connect LED chip 1211 by pad 113, and LED chip 1211 is made to shine and turn by light It changes layer 15 and projects blue, red, green color light.

In order to enable the LED chip being set on first surface 111 1211 more closely to arrange, referring to Fig. 6, defining one X-Y-Z coordinate system, wherein the short side of the substrate 11 corresponds to the size of X-direction, and the long side of the substrate 11 corresponds to Y-axis side To size, the thickness of the substrate 11 corresponds to the size of Z-direction.Between two LED chips 1211 of arbitrary neighborhood Spacing e is up to 0.75mm, and spacing e can also be 0.01mm-0.75mm.

The light source assembly 1 is rectangle with the single LED chip 1211, the long side of the light source assembly 1 with it is described The long side of LED chip 1211 is arranged in parallel, and the short side of the light source assembly 1 and the short side of the LED chip 1211 are arranged in parallel, The length a of the LED chip 1211 is up to 1mm, and length a can also be 0.01mm-1mm, the width of the LED chip 1211 B is up to 0.5mm, and width b can also be 0.01mm-0.5mm.

The thickness h of the substrate 11 is up to 2mm, and the thickness h of the substrate 11 can also be 10 μm of -2mm.

Optionally, the LED chip 1211 is round (not shown), and diameter is up to 0.5mm, and diameter can also be 0.01mm-0.5mm。

Using small size state LED chip 1211 and limit any two LED chip 1211 spacing e small-sized, The LED chip being set on first surface 111 1211 is more closely arranged, the small-sized of the thickness h of substrate 11 allows Light source assembly 1 it is more lightening.

Referring to Fig. 7, the second embodiment of the utility model provides a kind of display module 2 comprising above-mentioned first implements Light source assembly 1 provided in example, the display module 2 further include a supporting element 21, and the supporting element 21 includes one or more On a FPC plate (not shown), 1 matrix arrangement of multiple light sources component and the supporting element 12, the light source assembly 1 and supporting element FPC plate on 21 corresponds, and is electrically conducted with realizing.The light source assembly 1 due to its LED chip 1211 arrange it is closer, Then can be display module 2 has more preferably display effect, and light source assembly 1 has electric connection structure 13 as illustrated in fig. 5b, Can directly be attached on the FPC plate of the supporting element 21 can be achieved with electrically conducting.

Compared with prior art, a kind of light source assembly provided by the utility model comprising multiple pixel units, Duo Ge electricity Connection structure and substrate, the substrate include opposite first surface and second surface, and the pixel unit setting is described the On one surface, the electric connection structure is arranged on the second surface.Any pixel unit includes at least three pixels Point, at least three pixel include at least three LED chips, and at least three LED chips are with total anode or total cathode Mode is electrically connected with an electric connection structure, and the region area that an electric connection structure corresponds to the second surface is less than One pixel unit corresponds to the region area of the first surface.Anode altogether or the pixel unit that cathode mode connects altogether are set In the corresponding region area of second surface than not set pixel unit positive or that cathode mode connects altogether altogether in second surface pair The region area answered is small, then more electric connection structures can be arranged in second surface, corresponding, so that it may so that on first surface Than not set anode altogether or altogether, the pixel unit of cathode can increase more LED chips to LED chip on the same substrate.

The light source assembly further includes a light conversion layer, and the light conversion layer can be fluorescence coating or quantum dot layer, described The light that LED chip projects uniform blue, red, green three kinds of colors after light conversion layer is any, then multiple pixel units project The uniform light of different colours forms image.

The above is only the utility model preferred embodiments, are not intended to limit the utility model, all practical new at this Made any modification within type principle, equivalent replacement and improvement etc. should all be comprising within the protection scope of the utility model.

Claims

1. a kind of light source assembly, it is characterised in that: the light source assembly includes multiple pixel units, multiple electric connection structures and base Plate, the substrate include opposite first surface and second surface；

On the first surface, the electric connection structure is arranged on the second surface for the pixel unit setting；

Any pixel unit includes at least three pixels, and the pixel includes LED chip, and the LED chip includes Anode and cathode；The LED chip of at least three pixels is by the total positive or binding that is electrically connected altogether in a manner of cathode and described in one Structure is electrically connected；

The region area that one electric connection structure corresponds to the second surface corresponds to described first less than a pixel unit The region area on surface.

2. light source assembly as described in the appended claim 1, it is characterised in that: the electric connection structure includes at least four electrode slices, The electrode slice include a positive plate, multiple independent negative electrode tabs, at least three LED chips anode with the anode Piece electrical connection, the cathode of at least three LED chips are electrically connected from the different negative electrode tabs respectively.

3. light source assembly as stated in claim 2, it is characterised in that: the pixel unit includes three pixels, the electricity Connection structure includes the first negative electrode tab, the second negative electrode tab and third negative electrode tab, the positive plate, the first negative electrode tab, the second cathode Piece and third negative electrode tab are with " matrix pattern " Structural assignments on the second surface.

4. light source assembly as claimed in claim 3, it is characterised in that: the substrate further includes being located on the first surface Pad and conducting wire, the pad be electrically connected with the LED chip, the pad is electrically connected with the conducting wire.

5. light source assembly as claimed in claim 4, it is characterised in that: the substrate further includes multiple through-holes, and the through-hole passes through The substrate is worn, conductive material is filled in the through-hole, the LED chip is electrically connected with the electric connection structure.

6. light source assembly as described in the appended claim 1, it is characterised in that: the substrate is any of hard substrate or soft substrate plate Kind, the substrate thickness is 10 μm of -2mm.

7. the light source assembly as described in any in claim 1-6, it is characterised in that: the pixel further includes a light conversion layer, The light conversion layer cladding closes the LED chip；Three pixels of one pixel unit successively issue it is blue, red, The light of green color.

8. light source assembly as recited in claim 7, it is characterised in that: multiple LED chip interval settings, arbitrary neighborhood Spacing between two LED chips is 0.01mm-0.75mm；

The LED chip is rectangle, and the length 0.01mm-1mm of the LED chip, the width of the LED chip is 0.01mm- 0.5mm；

The LED chip is circle, a diameter of 0.01mm-0.5mm.

9. light source assembly as claimed in claim 8, it is characterised in that: when the shape of the LED chip and the light source assembly When being rectangle, the long side of the light source assembly and the long side of the LED chip are arranged in parallel, the broadside of the light source assembly with The short side of the LED chip is arranged in parallel.

10. a kind of display module, it is characterised in that: it includes light source assembly as claimed in claim 9, and the display module is also Including supporting element, the supporting element includes multiple FPC plates, and multiple light source assemblies are set on the supporting element, described The FPC plate on light source assembly and the supporting element corresponds.