CN208969260U - Optical component - Google Patents

Abstract

The utility model provides a kind of optical component, and the optical component includes: the first substrate film；First optical picture pattern layer is set on first substrate film；Second substrate film is bonded in the first optical picture pattern layer in a manner of part；And the second optical picture pattern layer, it is set on second substrate film；It is provided with and is at least set to the first optical picture pattern layer top, and be formed with diffusion patterned diffusion layer in its at least part.The utility model is able to suppress the situation that brightness reduces due to being abnormal light beam in the bonded part of lower prism piece and top prismatic lens.

Description

Optical component

Technical field

The utility model relates to optical component, the light supply apparatus with optical component and display devices, more specifically relate to And a kind of optical component that can be improved brightness, light supply apparatus and display device with optical component.

Background technique

It is luminous that liquid crystal display device (LCD:Liquid Crystal Display) is that itself can not be carried out, but passes through tune The transmitance from the light of external light source incidence is saved to show the display device of the indirect light emission mode of image.Liquid crystal display device exists The side of liquid crystal display panel is provided with back light unit (BLU:Back Light Unit), by adjusting the light issued from back light unit Light transmittance show image.Back light unit generally include the light sources such as fluorescent lamp, LED (Light Emitting Device) and The optical sheets such as light guide plate, diffusion sheet, prismatic lens.

Fig. 1 is the exploded perspective view of general liquid crystal display device, and Fig. 2 is the figure for showing the structure of prismatic lens.

Referring to Fig.1, liquid crystal display device includes back light unit 10 and liquid crystal display panel 20.In general, back light unit 10 is set The rear of liquid crystal display panel 20 is placed in to 20 irradiation light of liquid crystal display panel comprising: light source 11, reflecting plate 12, light guide plate 13, diffusion Piece 14, prismatic lens 15,16 and screening glass 17.

The light issued from light source 11 is transformed to the form of area source using light guide plate 13, and reflecting plate 12 is configured at light guide plate 13 Rear, so that the light for being emitted to 13 rear of light guide plate reflects to light guide plate 13 and carries out incidence, to make the minimization of loss of light. Diffusion sheet 14 plays the role of to be uniformly dispersed from the incident light of light guide plate 13, and prismatic lens 15,16 are formed using its surface Optical design to carry out light harvesting to incident light and be emitted to liquid crystal display panel 20, and screening glass 17 is set to prismatic lens 15,16 tops And play the role of protecting prismatic lens 15,16.

Prismatic lens 15,16 are usually had by being formed on light transmissible substrate film top in order to improve the brightness of positive direction There is the optical picture pattern layer of the optical design of triarray (array) form of 45 ° of inclined surface.Optical design shape as described above As mountain apperance, therefore, the top on mountain is easy to be broken or be easy to be twisted and be damaged because of the scraping of lesser outside. Especially, as shown in Figure 2 A, in the case where bonding multiple prismatic lens 15,16 and use, as shown in Figure 2 B, during the bonding process By there is a phenomenon where be set to the deformation of the optical design of the prismatic lens of lower part or damage.The light occurred from light source is in the ideal case It is emitted along the direction almost orthogonal with the surface of prismatic lens, but in the case where optical design damage, as shown in Figure 2 B, will send out The raw extraordinary beam of the route diversion of light due to the outgoing of the part of the optical design deformation or damage from prismatic lens.Exist as a result, During bonding multiple prismatic lens, the light that is emitted by the position of the optical design deformation or damage from prismatic lens with from normal The light of position outgoing reduces the brightness of light there are path difference, and occurs in the image of liquid crystal display device bad.Even if Such bad a part of region for occurring only at prismatic lens, corresponding entire prism will be unable to using and reduce production efficiency, And this burden directly acted on as cost increase.

Utility model content

The purpose of this utility model is to provide a kind of optical components of generation for being able to suppress extraordinary beam.

The purpose of this utility model, which also resides in, provides a kind of optical component that can equably realize brightness.

The purpose of this utility model, which also resides in, provides a kind of optical component of reliability that can be improved product.

The optical component of the utility model includes: the first substrate film；First optical picture pattern layer is set to first base On the film of bottom；Second substrate film is bonded in the first optical picture pattern layer in a manner of part；And second optical design Layer, is set on second substrate film；Be provided with and be at least set to the first optical picture pattern layer top, and its at least A part is formed with diffusion patterned diffusion layer.

According to the optical component of utility model, it is able to suppress because being sent out in the bonded part of lower prism piece and top prismatic lens Raw extraordinary beam and the situation for causing brightness to reduce.That is, inhibiting by lower prism piece top sandwiched diffusion layer because under Optical design is damaged and is abnormal the situation of light beam when portion's prismatic lens and bonding top prismatic lens.Thereby, it is possible to mention Height is using the light supply apparatus of optical component and the reliability of display device etc..

Detailed description of the invention

Fig. 1 is the exploded perspective view of general liquid crystal display device.

Fig. 2A and Fig. 2 B is the figure for showing the structure of prismatic lens.

Fig. 3 A to Fig. 3 C is the structure for showing the optical component of the embodiments of the present invention and the distribution of the light through it Figure.

Fig. 4 A to Fig. 4 C is the figure for showing the shape of diffusion patterned multiplicity of the adhesive method according to prismatic lens.

Fig. 5 A and Fig. 5 B are the figures for showing the structure of the optical component of variation of the utility model.

Specific embodiment

Hereinafter, the embodiments of the present invention are described in detail referring to attached drawing.But the utility model and unlimited Due to embodiment disclosed below, but it can be implemented as the form of multiplicity different from each other, the present embodiment is merely to complete Ground discloses the utility model, and fully prompts the scope of the utility model to those skilled in the art and provide.

Hereinafter, being illustrated referring to preferred embodiment of the attached drawing to the utility model.

Fig. 3 A to Fig. 3 C is to show the structure of the optical component of the embodiments of the present invention and by the optical component The figure of the distribution of the light of transmission, Fig. 4 A to Fig. 4 C are the shapes for showing the diffusion patterned multiplicity of the adhesive method according to prismatic lens Figure.

Referring to Fig. 3 A to Fig. 3 C, optical component includes lower prism piece 120 and is set to lower prism piece with bonding mode The top prismatic lens 130 and diffusion layer 140 on 120 tops.At this point, diffusion layer 140 can be at least set on lower prism piece 120 Portion.

The first optical picture that lower prism piece 120 substrate film 122 and be formed on the first substrate film 122 including first Pattern layer 124.

Top prismatic lens 130 include: the second substrate film 132, are bonded in the first optical picture pattern layer 124；Second optical picture Pattern layer 134 is formed in 132 top of the second substrate film.First optical picture pattern layer 124 can use the substance with caking property It is formed, additional bonding component can be set between the first optical picture pattern layer 124 and top prismatic lens 130.When by top When prismatic lens 130 are bonded in lower prism 120 top of piece, need to make the first optical picture pattern layer 124 and the second optical picture pattern layer 134 It is configured in such a way that the orientation of its optical design is in intersect with predetermined angular.Intersecting angle as described above can be with It is different according to the shape of optical design, for example, as shown in Fig. 3 A to Fig. 3 C, in optical design with the section shape with triangle In the case that the mode of shape is continuously arranged along a direction, preferably so that the orthogonal side of the orientation of optical design Formula configures top prismatic lens 130.

First substrate film 122 and the second substrate film 132, which can be used, has preferably the light in visible light region Polycarbonate (PC:Polycarbonate), the polyethylene terephthalate (PET:polyethylene of permeability Terephthalate), polypropylene (PP:PolyPropylene), polyethylene (PE:Polyethylene), polymethylacrylic acid At least one of methyl esters (PMMA:PolyMethyl MethAcrylate).These materials are to make to penetrate from the light of rear incident Material, with relatively high refractive index.

First optical picture pattern layer 124 and the second optical picture pattern layer 134 include for making to carry out light harvesting from the light of rear incident And forwards be liquid crystal display panel side outgoing optical design.Optical design can have defined section, and along the first substrate A direction of film 122 and the second substrate film 132 continuously arranges to be formed.For example, optical design such as Fig. 3 A to Fig. 3 C institute Show the triangular cross-sectional shape for being formed as scheduled size, it can also be as shown in Figure 4 C by the triangular-section shape of scheduled size The dual structure shape that shape and projective structure object B with scale higher than the triangular cross-sectional shape are formed in a manner of part At.The situation that projective structure object B is formed as intimate convex type lens morphology is shown, but it's not limited to that for its form in Fig. 4 C.Its In, in the case where the optical design of scheduled size is formed in a manner of with the scheduled period, optical design be can have The period of 10 to 80 μm of degree, it is therefore preferred to have the mode in the period of 20 to 60 μm of degree is formed.It is small in the period of optical design In the case where suggested range, optical design is formed by being not easy, in the case where being greater than suggested range, will be occurred all Such as the optical defect phenomenon of moire (moire) or rainbow line (Newton ring), to be not easy to control brightness etc. in a constant manner Light characteristic.

Especially, in the case where the first optical picture pattern layer 124 is formed as dual structure as shown in Figure 4 C, due to scale High projective structure object B is bonded in the second substrate film 132, can reduce between lower prism piece 120 and top prismatic lens 130 Bond area.Wherein, in the case where lower prism piece 120 and top prismatic lens 130 to be bonded to one another, it is bonded in top prism A part of the shape of the optical design formed in first optical picture pattern layer 124 of piece 130 will deform.As a result, bonding Light characteristic on position will change, so that there is a phenomenon where brightness to reduce.It is therefore desirable to reduce lower prism piece 120 Bond area between top prismatic lens 130 reduces the bonding between the first optical picture pattern layer 124 and the second substrate film 132 Area.For example, the bond area formed between lower prism piece 120 and top prismatic lens 130 is top and the bottom prismatic lens 120,130 faces Long-pending 0.5 to 15%, preferably 2.5 to 10% degree.In the case where bond area is less than suggested range, due to lower part Cohesive force between prismatic lens 120 and top prismatic lens 130 is low and is easy to happen and is separated from each other etc. bad, is being greater than suggested model In the case where enclosing, the refractive index for the light being emitted by prismatic lens is by change, the problem of reduction so as to cause light characteristics such as brightness.

In addition, in the present invention, in order to inhibit because of the mistake in bonding lower prism piece 120 and top prismatic lens 130 The deformation of the first optical picture pattern layer 124 occurs in journey so that light characteristic change and brightness reduce the phenomenon that, can at least exist 120 top of lower prism piece is provided with diffusion patterned 142 diffusion layer being formed with for correcting light characteristic (for example, light path) 140.At this point, diffusion patterned 142 can form in the range of the inside of diffusion layer 140 or surface entirety, can also with The part corresponding with the bonding region of top prismatic lens 130 of lower prism piece 120 is formed.Diffusion layer 140 as described above rises To forming optical haze (Haze) so that the effect that light is equably spread.The degree of optical haze can be aftermentioned diffusion patterned according to being formed Size and density, the surface roughness degree of 142 scattering particles and controlled.

As shown in Fig. 3 A and Fig. 3 B, diffusion layer 140 can also be formed as film morphology.In the case, diffusion layer 140 can To be the optical component of multiplicity, such as can be reflection type polarizer existing in the prior art, polarization plates, screening glass etc..

Also, the effect of diffusion layer 140 can also be performed in top prismatic lens 130.

Diffusion layer 140 can include scattering particles X on internal or surface.For example, diffusion layer 140 can be on manufacture top During prismatic lens 130, by the second substrate film or in the second optical picture pattern layer 134 disperse scattering particles X and Form diffusion patterned 142.Also, it, can although not shown, in manufacture reflection type polarizer above-mentioned, polarization plates or screening glass With inside it or Dispersion on surface scattering particles X forms diffusion patterned 142, to be used as diffusion layer 140.At this point, In the case where each film surface forms diffusion patterned 142, by the coating substance for being dispersed with scattering particles X or can be attached at each Film surface.

Scattering particles X can be microballon (bead) shape, can be used the inorganic matters such as zirconium Zr, aluminium Al, titanium Ti, silicon Si or The organic matters such as PMMA (Poly Methyl Methacrylate).Its size can be formed as the size of 100nm to 10 μm of degree, Its size and tamped density can also be adjusted according to light characteristics such as required refractive index, brightness.It can be dissipated by adjusting The size of radion and tamped density etc. control optical haze size, for example, can pass through the size and dispersion for increasing scattering particles Density increases the size of optical haze.

In addition, diffusion layer 140 can be formed as single film morphology, laminated film form can also be formed as, it can also To be used in 120 top of lower prism piece two at more than and use.

The diffusion layer 140 formed as described above is at least set to 120 top of lower prism piece, for changing lower part rib is penetrated The path of the light of eyeglass 120, and project light in a manner of with scheduled angle to outside.That is, in lower prism piece 120 The path of the light of route diversion is adjusted again due to optical design deforms with the bonded part of top prismatic lens 130, thus Project the light in a manner of with scheduled direction to outside.As a result, using top prismatic lens 130 or similar therewith In the light source unit or display device of prismatic lens, it is able to suppress the phenomenon that brightness (intensity) is reduced in a manner of part.

Diffusion patterned 142 can form in all ranges of diffusion layer 140, but can also with lower prism piece 120 regions corresponding with the bonding part of top prismatic lens 130.It therefore, diffusion patterned 142 can be according to being formed in lower part rib The shape of the optical design of eyeglass 120 and thus make lower prism piece 120 and top prismatic lens 130 it is bonding and formed bonding Face form and be formed as multiplicity form.Diffusion patterned 142, which are formed in region corresponding with the part of bonding, is not limited to expand Scattered pattern 142 is identical with the area of adhesive segment, but indicates can be constituted influence to the path of the light by adhesive segment Area formed.

Referring to Fig. 4 A, in the first optical picture pattern layer 124, have along the optical design that a direction is continuously formed pre- The mode at fixed interval is arranged, and optical design is bonded in the second substrate film 132 in a manner of alternately rotation and (A: do not glued Knot, B: bonding).In the case, diffusion patterned 142 it can have the mode at scheduled interval in all ranges of diffusion layer 140 Interior formation.And it is possible to continuously arrange to be formed along a direction.

Referring to Fig. 4 B, in the first optical picture pattern layer 124, have along the optical design that a direction is continuously formed pre- The mode at fixed interval is arranged, and several optical pictures of the marginal portion being damaged by external force and central part formation are easy Case is bonded in the second substrate film 132.As a result, diffusion patterned 142 can be formed in diffusion layer 140 two sides marginal portion and A part of central part.

Referring to Fig. 4 C, the optical picture of the dual structure with scale different from each other is formed in the first optical picture pattern layer 124 Case, the high optical design B of scale are bonded in the second substrate film 132.It in the case, diffusion patterned 142 can be with scale height Region accordingly formed.At this point it is possible to the high part of scale is formed as into convex type lens morphology, it is in the case, diffusion patterned 142 can be formed as dot spaced from (point) shape.

It is aobvious that the optical component formed as described above can be used in the light supply apparatus such as back light unit or liquid crystal display device etc. Showing device, thus the feelings for inhibiting the light characteristic (for example, brightness) occurred by the bonding of other optical components such as prismatic lens to reduce Shape.Here, being illustrated so that diffusion layer 140 is formed in the situation on 130 top of top prismatic lens as an example, still, such as Fig. 5 A and figure Shown in 5B, diffusion layer 140 can also be formed between lower prism piece 120 and top prismatic lens 130.In the case, lower part Prismatic lens 120 and diffusion layer 140 directly bond, so that the first optical picture pattern layer 124 be made to deform.It is formed in diffusion layer 140 Scatter diagram pattern layer 142 with and the bond area of lower prism piece 120 accordingly formed.As described above, by 140 shape of diffusion layer In the case where between lower prism piece 120 and top prismatic lens 130, top prismatic lens 130 are formed in by diffusion layer 140 The phenomenon that the case where top, is compared, and can be more effectively prevented from the light characteristic of bonded part reduces.That is, the shape of diffusion layer 140 At position more far from bonded part, the probability being diffused by the light that bonded part is emitted is higher, therefore, corrects light path Effect may reduce.Therefore, diffusion layer 140 can be set between lower prism piece 120 and top prismatic lens 130, To the situation that effectively light characteristic of bonded part reduces always.

As described above, specific embodiment is illustrated in specific embodiment of the present utility model, still, not It can implement various deformation in the case where the scope of the utility model.Therefore, the scope of the utility model is not limited to The embodiment of explanation, but by appended claims and with depending on the protection scope of claims equalization.

Claims (8)

1. a kind of optical component, it is characterised in that: wherein,

Include:

First substrate film；

First optical picture pattern layer is set on first substrate film；

Second substrate film, part adhesive is in the first optical picture pattern layer；And

Second optical picture pattern layer is set on second substrate film,

It is provided with and is at least set to the first optical picture pattern layer top, and be formed with diffusion patterned expansion in its at least part Dissipate layer.

2. optical component according to claim 1, it is characterised in that: wherein,

The first optical picture pattern layer has optical design using 10 to 80 μm as period-producer.

3. optical component according to claim 2, it is characterised in that: wherein,

The bond area formed between the first optical picture pattern layer and second substrate film is first substrate film Or the 0.5% to 15% of the area of second substrate film.

4. optical component according to claim 1, it is characterised in that: wherein,

The diffusion layer is in portion corresponding with the bonding position of the first optical picture pattern layer and second substrate film Divide and is formed with diffusion patterned film.

5. optical component according to claim 4, it is characterised in that: wherein,

It is described diffusion patterned with surface roughness.

6. optical component according to claim 4, it is characterised in that: wherein,

It is described diffusion patterned to be formed by scattering particles.

7. optical component according to claim 6, it is characterised in that: wherein,

The diffusion layer is formed in second substrate film.

8. optical component according to claim 4, it is characterised in that: wherein,

The diffusion layer is set to the second optical picture pattern layer top.