CN206637281U - A kind of backlight and display module - Google Patents

Abstract

The utility model discloses a kind of backlight, including bottom plate, the light guide plate and luminescence component being arranged on the bottom plate；The luminescence component includes the long lamp bar of circuit board and electrical connection on the board, the circuit board is arranged on bottom plate, the long lamp bar is arranged on the periphery of the light guide plate, and the long lamp bar includes flexible base board, some light sources being fitted on the flexible base board.The invention also discloses a kind of display module.The backlight eliminates existing framework, and mode luminescence component being arranged on bottom plate, solves the problems, such as sticking effect difference and the lightening problem of backlight caused by being pullled when compatibling problem, the assembling of long lamp bar.

Description

A kind of backlight and display module

Technical field

Backlight technology field is the utility model is related to, more particularly to a kind of backlight and display module.

Background technology

Existing intelligent watch, instrument board etc. need backing structure of the profile for regular shapes such as circles.As shown in figure 1, its The existing backing structure for coordinating circular AA areas display panel is shown, luminescence component is mainly used as using individually encapsulation LED 1 ' Side is disposed therein, as below Fig. 1.As shown in Fig. 2 which show the currently used encapsulation schematic diagrames of LED 1 ', conventional LED 1 ' it is internal have the connection of gold thread 13 ', LED chips 12 ' need to be encapsulated in plastic casing 11 ', profile can not deformation, then this LED 1 ' need to weld in the plane, therefore the luminescence component of backing structure will assemble in the plane, so as to limit backing structure Profile, need to protrude as shown in figure 1, this backing structure puts the positions of LED 1 ', then the profile of backing structure does not accomplish circle, greatly Limit its use range.

A kind of backlight and display is claimed in the utility model patent of a Application No. 201621291374.4 Module.The long lamp bar that the backlight uses is bonded on flexible substrates by way of LED chip upside-down mounting to solve luminescence component The problem of can only assembling in the plane, it is achieved thereby that the circular profile of backlight.But the backlight, which still suffers from some, to be lacked Fall into：1st, long lamp bar is pasted onto on the medial surface of framework, and the medial surface of framework has radian, technical staff is needed according to difference The framework of size adjusts the density of LED chip, long lamp bar it is compatible relatively low；The 2nd, although the mode of LED chip upside-down mounting can be with Meet certain radian, but assembly crewman still easily pulls long lamp bar in fitting and causes long lamp bar sticking effect not It is good；3rd, as the development of optical film, light guide plate and LED chip flip chip technology, the thickness of these accessories can have been accomplished very Bao Liao, now, frame facet limit backlight further to lightening development on the contrary.

Utility model content

Technical problem to be solved in the utility model there is provided a kind of backlight, eliminate existing framework, and incite somebody to action Luminescence component is arranged on the mode on bottom plate, solves sticking effect difference caused by being pullled when compatibling problem, the assembling of long lamp bar The lightening problem of problem and backlight.

The utility model additionally provides a kind of display module.

Technical problem to be solved in the utility model is achieved by the following technical programs：

A kind of backlight, including bottom plate, the light guide plate and luminescence component being arranged on the bottom plate；The luminescence component bag The long lamp bar of circuit board and electrical connection on the board is included, the circuit board is arranged on bottom plate, and the long lamp bar is arranged on The periphery of the light guide plate, the long lamp bar include flexible base board, some light sources being fitted on the flexible base board.

Further, the light source is LED chip or chipset, and the chipset is by least one of RGB monochromatic light Chip forms.

Further, luminescence component is made to send white light covered with light conversion film above the light source.

Further, there is the partial circuit of the circuit board on the flexible base board towards the side of the circuit board, It forms complete circuit by solder joint and the circuit board electrical connection.

Further, the long lamp bar is arranged on the outer of the light guide plate and made a circle；Or the long lamp bar is arranged on institute A periphery part for light guide plate is stated, remainder sets adhesive tape.

Further, in addition to the optical film that is arranged on above the light guide plate and/or it is arranged on below the light guide plate Reflector plate.

Further, in addition to the anti-dazzling screen that is arranged on above the luminescence component.

Further, in addition to the inviscid film that is arranged between the anti-dazzling screen and luminescence component.

Further, the bottom plate is regular shape or irregular shape bottom plate, and the regular shape is circular, ellipse Or polygon.

A kind of display module, including the display panel being mutually correspondingly arranged and above-mentioned backlight.

The utility model has the advantages that：The backlight eliminates existing framework, and luminescence component is arranged on On bottom plate, luminescence component assembles in the plane, can solve the problems, such as long lamp bar when compatibling problem caused by radian and assembling Caused by pullling the problem of sticking effect difference, and solves the lightening problem of backlight.

Brief description of the drawings

Fig. 1 is existing circular backing structure；

Fig. 2 is the LED structure schematic diagram at A in Fig. 1；

Fig. 3 is the structural representation of the utility model backlight；

Fig. 4 is the structural representation of luminescence component in the utility model backlight；

Fig. 5 is the structural representation of long lamp bar in the utility model luminescence component；

Fig. 6 is the sectional view at C-C in Fig. 5；

Fig. 7 is the sectional view at B-B in Fig. 3；

Fig. 8 is the back view of the utility model backlight.

Embodiment

The utility model is described in detail with reference to embodiment, embodiment is only of the present utility model preferred real Mode is applied, is not to restriction of the present utility model.

Embodiment 1

As in Figure 3-5, a kind of backlight, including bottom plate 1 and the light guide plate 2 being arranged on the bottom plate 1 and luminous group Part 3, wherein, the luminescence component 3 includes circuit board 31 and long lamp bar 32, and the long lamp bar 32 includes flexible base board 321, fitting Some light sources 322 on the flexible base board 321, the long bottom of lamp bar 32 is provided with some solder joints, through some welderings Point realizes the electrical connection of circuit board 31 and some light sources 322；The circuit board 31 is arranged on bottom plate 1, and the long lamp bar 32 is set Put in the periphery of the light guide plate 2.

The backlight eliminates existing framework, and the luminescence component 3 is arranged on bottom plate 1,3 groups of the luminescence component Dress in the plane, without adjusting the density of some light sources 322 in the long lamp bar 32 because of radian reason, improves the hair Compatibility of the optical assembly 3 to different backlights；The long lamp bar 322 assembles in the plane, assembly crewman in assembling just not yet Have cause luminescence component 3 to come off because pullling, sticking effect difference the problem of；Backlight limits without existing frame facet Its thickness is made, is developed with the technology of optical film, light guide plate 2 and LED chip upside-down mounting, can be further to lightening hair Exhibition.

Fig. 5,6 are refer to, as an improvement mode, some light sources 322 are uniformly distributed or be non-uniformly distributed in institute State on flexible base board 321, the utility model is preferably evenly distributed through on the flexible base board 321.The light source 322 can be The long lamp bar 32 of LED chip or chipset, i.e. whole piece has multiple individually chip or chipsets.Wherein, when the light source 322 is During LED chip, the top of light source 322 makes long lamp bar 32 send white light covered with light conversion film 323；Specifically, independent LED Can be that blue-light LED chip+yellow fluorescent powder film makes long lamp bar 32 send common white light or blue led core during chip Piece+RG fluorescent powder membranes make long lamp bar 32 send high colour gamut white light, but are not limited to this.When the light source 322 is LED chip group, If LED chip group is made up of any of RGB or any two monochromatic light LED chips, its top is covered with light conversion film 323, it can be the fluorescent powder membrane or quantum dot film of respective color lacking in collocation LED chip group, send long lamp bar 32 White light；If core LED piece groups are the color chip groups of RGB tri-, its top covered with the light conversion film 323 without light translation function, That is hyaline membrane.Chipset is also not only above-mentioned in this way, more complicated situation is one or more kinds of colors tool in multi-chip group There are multiple chips, such as RGGB, RRGGB etc., this is existing known technology, be will not be described in detail herein.It is it should be noted that right in figure Only illustrated in multi-chip group with a profile.

As an improvement mode, the light conversion film 323 preferably covers the top of light source 322 by hot pressing, It is bonded with the flexible base board 321；The light conversion film 323 can also be multilayer complex films, can also be close to the light source 322 Side has viscosity, is more convenient for being bonded.The light conversion film 323 is the fluorescent powder membrane containing single or multiple color mixing, It can be the quantum dot film of single or the mixing of multiple color quantum dot, can also be different colours or same color quantum dot With the hybrid films of fluorescent material.The powder such as fluorescent material or quantum dot preferably with the uniform combination drying film forming of transparent solvent.Such as using During BG color chips, the light conversion film 323 can have red fluorescence powder or red quantum dot, or both mixture, or Person increases other color fluorescence powder or quantum dot.Also for example using blue LED die, then the light conversion film 323 can have Either RG quantum dots or both mix or added other color fluorescence powder or quantum dot to RG fluorescent material.Arrange in pairs or groups in a word Mode is varied, can be arranged in pairs or groups according to the color of the color of LED chip, fluorescent material or quantum dot, and this is existing public affairs Know technology, will not be described in detail herein.

As an improvement mode, the flexible base board 321, which is bonded the side of light source 322, has the connection light source 322 and the connection circuit of circuit board 31, the design of this connection circuit and to be in the layout of for those skilled in the art be known technology, It can design and be laid out according to actual conditions, will not be described in detail herein.It is highly preferred that the opposite side of the flexible base board 321 has institute The partial circuit of circuit board 31 is stated, it is electrically connected to form complete circuit by solder joint and the circuit board 31, can simplify circuit board 31 design circuit, increase design space and reduce design difficulty, further improve the stability of circuit board.

As an improvement mode, the circuit board 31 is FPC or PCB.The long lamp bar 32 is an entirety, is passed through SMT welding or ACF hot pressing etc. electrically connect with circuit board 31.

As an improvement mode, the luminescence component 3 is pasted onto the bottom plate 1 preferably by double faced adhesive tape or heat-conducting glue On, and the long lamp bar 32 surrounds 2 one whole circle of light guide plate, a circle can light；Can also be one around light guide plate 2 Point, according to structure and performance selection such as semicircle or 1/4 circle, the remainder of indentation, there sets adhesive tape 4, as shown in Fig. 3,7. The adhesive tape 4 is fitted on the bottom plate 1 by double faced adhesive tape；Or, the adhesive tape 4 is by way of integrated injection molding and institute State bottom plate 1 to be integrally formed, now bottom plate 1 there are some hole positions at adhesive tape 4（Do not shown in figure）, it is easy to adhesive tape 4 during injection to fill Wherein, adhesive tape 4 is made to be fitted close with bottom plate 1.

Fig. 7 is refer to, as an improvement mode, the backlight also includes the light for being arranged on the top of light guide plate 2 Learn film 5 and/or be arranged on the reflector plate 6 of the lower section of light guide plate 2.The optical film 5 by the light emission side of light guide plate 2 outward according to It is secondary including the first diffusion barrier, lower brightness enhancement film and upper brightness enhancement film, but be not limited to this.

As an improvement mode, the backlight also includes the anti-dazzling screen 7 for being arranged on the top of luminescence component 3, with Stickup and supporting construction of the luminescence component 3 as anti-dazzling screen 7.The anti-dazzling screen 7 is preferred away from the side of luminescence component 3 It is black flour, opposite side can be that fine flour can also be black flour, preferably black flour, the 7 preferred biadhesive of anti-dazzling screen.

Because the structure limitation of the luminescence component 3 of the backlight may make its top can not be between the anti-dazzling screen 7 Formed and preferably pasted, therefore add an inviscid film 8 between the anti-dazzling screen 7 and luminescence component 3, it is preferred but does not limit For PE, PET or the second diffusion barrier, preferably the second diffusion barrier, front bending of the inviscid film 8 from the luminescence component 3 To the back side of the bottom plate 1, it is fitted in through double faced adhesive tape on the back side of the bottom plate 1.The inviscid film 8 can be folded over whole circle To be bonded, or the bending of some extensions is fitted on the back side of the bottom plate 1, as shown in Figure 8.It is if inviscid without this If film 8, glass and the backlight of display panel can be easily separated, then increase inviscid film between anti-dazzling screen 7 and bottom plate 1, patch To the back side, such can of anti-dazzling screen 7 firmly pastes glass and backlight.

As an improvement mode, the bottom plate 1 can be regular shape bottom plate, such as circular, ellipse or polygon.Institute It can also be irregular complex shape bottom plate, such as star, irregular polygon to state bottom plate 1.The bottom plate 1 can be heat conduction Metallic plate of good performance, the radiating of backlight, preferably aluminium sheet can be strengthened, when long-time use light source 322 when can in time by The heat of light source 322 is radiated through heat-conducting glue and bottom plate 1, and the effectively quick heat of light source 322 that reduces further extends the longevity of light source 322 Life and raising backlight effect；Further, the extension of circuit board 31 is expanded on whole face bottom plate 1, increases the wiring board Contact area and area of dissipation between 31 and bottom plate 1.

Embodiment 2

A kind of display module, it includes the backlight described in the display panel being mutually correspondingly arranged and embodiment 1.

Embodiment described above only expresses embodiment of the present utility model, and its description is more specific and detailed, but simultaneously Therefore the limitation to the utility model patent scope can not be interpreted as, as long as using equivalent substitution or the form of equivalent transformation institute The technical scheme of acquisition, it all should fall within the scope of protection of the utility model.

Claims (10)

1. A kind of 1. backlight, it is characterised in that including bottom plate, the light guide plate and luminescence component being arranged on the bottom plate；It is described Luminescence component includes the long lamp bar of circuit board and electrical connection on the board, and the circuit board is arranged on bottom plate, the length Lamp bar is arranged on the periphery of the light guide plate, the long lamp bar include flexible base board, be fitted in it is some on the flexible base board Light source.
2. 2. backlight according to claim 1, it is characterised in that the light source is LED chip or chipset, the chip Group is made up of at least one of RGB monochromatic light chips.
3. 3. backlight according to claim 1 or 2, it is characterised in that covered with light conversion film above the light source, make hair Optical assembly sends white light.
4. 4. backlight according to claim 3, it is characterised in that towards the side of the circuit board on the flexible base board Partial circuit with the circuit board, it forms complete circuit by solder joint and the circuit board electrical connection.
5. 5. the backlight according to claim 1 or 4, it is characterised in that the long lamp bar is arranged on the outer of the light guide plate Make a circle；Or the long lamp bar is arranged on a periphery part for the light guide plate, remainder sets adhesive tape.
6. 6. backlight according to claim 5, it is characterised in that also include being arranged on the optical film above the light guide plate And/or it is arranged on the reflector plate below the light guide plate.
7. 7. backlight according to claim 1, it is characterised in that also include being arranged on the shading above the luminescence component Piece.
8. 8. backlight according to claim 7, it is characterised in that also include be arranged on the anti-dazzling screen and luminescence component it Between inviscid film.
9. 9. backlight according to claim 1, it is characterised in that the bottom plate is regular shape or irregular shape bottom Plate, the regular shape are circular, ellipse or polygon.
10. 10. a kind of display module, it is characterised in that including the display panel being mutually correspondingly arranged and as claim 1 to 9 is any Described backlight.