CN207529073U - Planar illuminating device - Google Patents
Planar illuminating device Download PDFInfo
- Publication number
- CN207529073U CN207529073U CN201721604386.2U CN201721604386U CN207529073U CN 207529073 U CN207529073 U CN 207529073U CN 201721604386 U CN201721604386 U CN 201721604386U CN 207529073 U CN207529073 U CN 207529073U
- Authority
- CN
- China
- Prior art keywords
- mentioned
- dazzling screen
- side wall
- light
- shield layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model provides a kind of planar illuminating device, maintains photocurrent versus light intensity.The planar illuminating device of embodiment has：Light source；Light guide plate, above-mentioned light source are configured at the light incident sides of the light guide plate；Accommodating container has the side wall for the circumferential lateral surface for surrounding above-mentioned light source and above-mentioned light guide plate；First anti-dazzling screen is pasted on lateral surface and the upper surface of side wall opposed with above-mentioned light source in above-mentioned side wall, covers a part for the upper surface of the upper surface, the upper surface of above-mentioned light source and above-mentioned light guide plate；And second anti-dazzling screen, the upper surface of the side wall other than the above-mentioned side wall pasted for above-mentioned first anti-dazzling screen is pasted on, at least covers the upper surface, above-mentioned first anti-dazzling screen includes：The first light shield layer covered from the lateral surface for the above-mentioned side wall being stuck towards the side wall opposed with the side wall；And the second light shield layer covered from a part for the upper surface of above-mentioned first light shield layer towards the side wall opposed with the above-mentioned side wall pasted for above-mentioned first light shield layer.
Description
Technical field
The utility model is related to planar illuminating devices.
Background technology
There is known following planar illuminating devices in the past：LED(Light Emitting Diode：Light emitting diode) it is configured
In the light incident sides of light guide plate, and has the accommodating container of the side wall with the circumferential lateral surface for surrounding LED and light guide plate.Separately
Outside, it is specified that the anti-dazzling screen of the effective coverage of the outgoing plane of light guide plate is secured at side wall for above-mentioned planar illuminating device
Upper surface.
Patent document 1：Japanese Unexamined Patent Publication 2013-015637 bulletins
However, in the planar illuminating device of the above-mentioned prior art, narrow frame and ensure anti-dazzling screen with receiving in order to balance
Receive the adhesive strength of container (frame), for example, overlapping a variety of materials and form anti-dazzling screen.Accordingly, there exist following situations：Because of device
Use environment variation, the optical sheet that anti-dazzling screen is bonded in together with accommodating container generates fold, and can not tie up for a long time
Hold photocurrent versus light intensity.
Utility model content
It is that the utility model is exactly in view of the above problems and completes, and it is an object of the present invention to provide a kind of photocurrent versus light intensity of being able to maintain that
Planar illuminating device.
In order to solve above-mentioned problem, purpose is realized, the planar illuminating device of an embodiment of the utility model has：
Light source；Light guide plate, above-mentioned light source are configured at the light incident sides of the light guide plate；Accommodating container, the accommodating container are above-mentioned with surrounding
The side wall of the circumferential lateral surface of light source and above-mentioned light guide plate；First anti-dazzling screen, first anti-dazzling screen be pasted in above-mentioned side wall with it is upper
Lateral surface and the upper surface of the opposed side wall of light source are stated, covers the upper surface, the upper surface of above-mentioned light source and above-mentioned light guide plate
Upper surface a part；And second anti-dazzling screen, second anti-dazzling screen be pasted on pasted for above-mentioned first anti-dazzling screen it is above-mentioned
The upper surface of side wall other than side wall, at least covers the upper surface, and above-mentioned first anti-dazzling screen includes：From the above-mentioned side wall being stuck
The first light shield layer for being covered towards the side wall opposed with the side wall of lateral surface；And the upper table from above-mentioned first light shield layer
The second light shield layer that the part in face is covered towards the side wall opposed with the above-mentioned side wall pasted for above-mentioned first light shield layer.
An embodiment according to the present utility model, is able to maintain that photocurrent versus light intensity.
Description of the drawings
Fig. 1 is the vertical view of an example of the appearance for the planar illuminating device for representing embodiment.
Fig. 2 is the V-V line sectional stereograms of Fig. 1.
Fig. 3 is the vertical view illustrated to the accommodating container of embodiment.
Fig. 4 is the vertical view being exaggerated to the part A of Fig. 2.
Fig. 5 is the W-W line diagrammatic cross-sections of Fig. 2.
Fig. 6 A are the vertical views of the variation 1 in the gap for representing embodiment.
Fig. 6 B are the vertical views of the variation 2 in the gap for representing embodiment.
Fig. 7 is the sectional stereogram of the planar illuminating device of another embodiment.
Fig. 8 is the vertical view being exaggerated to the part B of Fig. 7.
Reference sign
1 ... planar illuminating device；2nd, 2a, 2b ... gap；10 ... accommodating containers；10a ... bottoms；10b ... side walls；10b-
1 ... medial surface；10b-2 ... lateral surfaces；10b-3 ... upper surfaces；10c ... bottom surfaces；The first planes of 10c-1 ...；10c-2 ... second is flat
Face；11…LED；12…FPC；20 ... first anti-dazzling screens；The first light shield layers of 20a ...；The second light shield layers of 20b ...；21 ... second hide
Mating plate；30 ... effective coverages；40 ... light guide plates；40a ... outgoing planes；40b ... reflectings surface；40c ... light incident sides；50 ... container masters
Body；51 ... frame parts.
Specific embodiment
Illustrate the planar illuminating device of embodiment referring to the drawings.In addition, embodiment as shown below is not
It is to limit the utility model.In addition, the relationship of the size of each element of attached drawing, ratio of each element etc. sometimes with reality not
Together.In addition, in the different part of the relationship, the ratio that include mutual size sometimes each other of attached drawing.
First, the configuration example of the planar illuminating device 1 of embodiment is illustrated using Fig. 1, Fig. 2 and Fig. 3.Fig. 1 is table
Show the vertical view of an example of the appearance of the planar illuminating device 1 of embodiment.Fig. 2 is the V-V line sectional stereograms of Fig. 1.
Fig. 3 is the vertical view illustrated to the accommodating container 10 of embodiment.
In addition, for easy understanding illustrate in Fig. 1, Fig. 2 and Fig. 3, it is illustrated that include the face for the side for projecting light
The three-dimensional orthogonal coordinate system being set as including the Z axis of positive direction.Also there is expression in used other attached drawings in the following description
The situation of above-mentioned orthogonal coordinate system.
As shown in Figure 1, outgoing plane 40a (with reference to Fig. 2) of the planar illuminating device 1 of embodiment in light guide plate 40, never
Light is projected in the region that is, effective coverage 30 covered by the first anti-dazzling screen 20 and the second anti-dazzling screen 21.I.e. above-mentioned planar light dress
Put 1 effective coverage 30 by the outgoing plane 40a of 21 regulation light guide plate 40 of the first anti-dazzling screen 20 and the second anti-dazzling screen.In addition,
First anti-dazzling screen 20 has the first light shield layer 20a and the second light shield layer 20b (with reference to Fig. 2).
The planar illuminating device 1 of present embodiment is for example used as the backlight of liquid crystal display device.On in addition,
State liquid crystal display device portable data assistance such as being used for smart mobile phone, tablet computer.
2 are had the gap in addition, being formed between the first anti-dazzling screen 20 and the second anti-dazzling screen 21.In addition, about the first anti-dazzling screen
20th, the detailed content in the second anti-dazzling screen 21 and gap 2 will carry out aftermentioned.
As shown in Fig. 2, planar illuminating device 1 has：Accommodating container 10, LED (Light Emitting Diode：It shines
Diode) 11, FPC (Flexible Printed Circuit：Flexible printed circuit board) 12, fixed component 13, diffusion sheet 14,
Prismatic lens 15, fixed component 16, reflector plate 17, fixed component 18, connecting member 19 and light guide plate 40.
Accommodating container 10 stores LED11, FPC12, fixed component 13, diffusion sheet 14, prismatic lens 15, solid components 16, anti-
Penetrate piece 17, fixed component 18, connecting member 19 and light guide plate 40.Above-mentioned accommodating container 10 has bottom 10a and side wall 10b.
Bottom 10a is along the position of the inside 40b extensions of light guide plate 40, has bottom surface 10c.Above-mentioned bottom surface 10c has
One plane 10c-1, the second plane 10c-2 that one section is had dropped from the first plane 10c-1 to Z axis negative direction side.
Side wall 10b is along the long side of the light incident sides 40c of light guide plate 40, and from bottom 10a to Z axis positive direction, (light projects
Direction) side erect position.Above-mentioned side wall 10b has medial surface 10b-1, lateral surface 10b-2 and upper surface 10b-3.
As shown in figure 3, above-mentioned accommodating container 10 has the container body 50 of approximate rectangular-shape and along said vesse master
The medial surface of body 50 and the section that sets observes u-shaped frame part 51.The rigidity of container body 50 is big, such as by stainless steel
The sheet metal of system is formed.Frame part 51 is for example made of resin.
In the present embodiment, it is set by the medial surface other than the medial surface opposed with LED11 in container body 50
Frame part 51 makes the thickness ratio accommodating container 10 of side wall 10b other than the side wall 10b opposed with LED11 of accommodating container 10
The thickness of the side wall 10b opposed with LED11 is thick.
In addition, the side wall 10b opposed with LED11 of accommodating container 10 is made of the side wall of container body 50, accommodating container
Side wall 10b other than the 10 side wall 10b opposed with LED11 is made of the side wall and the side wall of frame part 51 of container body 50.
That is the width of the upper surface 10b-3 of the side wall 10b other than the side wall 10b opposed with LED11 of accommodating container 10 is by container master
The width that the thickness of the thickness of the side wall of body 50 and the side wall of frame part 51 adds up to.
Fig. 2 is returned to, LED11 is dotted light source, the doubtful White LED e.g. comprising blue led and yellow fluorophor.
Above-mentioned LED11 is formed approximate rectangular-shape as a whole, has in Y direction opposed pairs interarea 11a, 11b, a side
Interarea (light-emitting surface) 11a abutted with the light incident sides 40c of light guide plate 40 positioned at Y-axis positive direction side.
In the present embodiment, LED11 along light guide plate 40 light incident sides 40c X-direction with impartial interval by with
It puts multiple.In addition, multiple LED11 are not necessarily required to be configured at uniform intervals, it is also possible to which non-uniform interval is configured.It is above-mentioned
Light incident sides 40cs of multiple LED11 from the light-emitting surface 11a positioned at Y-axis positive direction side towards light guide plate 40 sends out light.In addition,
LED11 is an example of light source.
FPC12 has in Y direction opposed pairs interarea, and the interarea of a side abuts (installation) in LED11 with shining
The interarea 11b of the opposing party of side opposite face 11a.Above-mentioned FPC12 is provided with the electricity for carrying out the power supply to LED11 etc.
Road.
FPC12 is fixed on the medial surface 10b-1 of the side wall 10b of accommodating container 10 by fixed component 13.Fixation portions part
13 be, for example, double faced adhesive tape, and the face of a side is secured at the interarea of the opposing party of FPC12, and the face of the opposing party is secured at medial surface
10b-1。
Light guide plate 40 is the component for guiding to the light from LED11 and being shone with planar, such as includes makrolon
The translucent materials such as resin, acrylic resin.Above-mentioned light guide plate 40 has：In Z-direction opposed pairs interarea 40a, 40b；
The side of the side of LED11 that is, light incident sides (incidence surface) 40c is configured；The side of the side opposite with light incident sides 40c is (not
Diagram).The light sent out to light incident sides 40c incidences LED11.
In addition, the interarea 40a for being located at a side of Z axis positive direction side in two interareas 40a, 40b is supplied from light incident sides 40c
The outgoing plane (light-emitting surface) that incident light (light that LED11 is sent out) projects.In addition, the master of the opposing party positioned at Z axis negative direction side
Face 40b is the reflecting surface (the inside) reflected for the light being incident in light guide plate 40.
It is for example formed in the interarea 40b of the opposing party and pattern is changed by the light path that multiple points are formed, pass through above-mentioned light path
Change pattern and change the direction of travel for entering the light in light guide plate 40, and light is projected from the interarea 40a of a side.In addition, following
Explanation in, " the interarea 40a of a side " is recorded as " outgoing plane 40a ", " the interarea 40b of the opposing party " is recorded as " reflecting surface
40b”。
Diffusion sheet 14 is configured in a manner of the outgoing plane 40a for covering light guide plate 40, to from the light that outgoing plane 40a is projected into
Row diffusion.Prismatic lens 15 are configured in the side opposite with light guide plate 40 relative to diffusion sheet 14, spread by diffusion sheet 14
The distribution controls of light afterwards, injection have carried out the light of distribution controls.
Fixed component 16 is, for example, double faced adhesive tape, and the part in the face of a side is secured at the outgoing plane 40a of light guide plate 40
A part and LED11 upper surface (face of Z axis positive direction side).In addition, overlappingly it is pasted with diffusion in the face of the opposing party
A part (end of light incident sides 40c sides) for piece 14.Fixation portions part 16 is by being configured at light guide plate 40 and diffusion sheet 14
Between, so as to make the diffusion sheet 14 of light incident sides 40c sides and prismatic lens 15 to Z axis positive direction side protrusion.That is prismatic lens 15
The end of light incident sides 40c sides is be overlapped with fixed component 16 across diffusion sheet 14, thus the light incident sides 40c sides of prismatic lens 15
The height and position of the upper surface of above-mentioned end is set as hiding with aftermentioned first by the size of the thickness of end bosses fixed component 16
The height and position of the upper surface of photosphere 20a is roughly the same.
Reflector plate 17 is configured in the reflecting surface 40b of light guide plate 40, to the light from the reflecting surface 40b of light guide plate 40 leakage into
Row reflects and it is made to again return to light guide plate 40.Fixed component 18 is, for example, double faced adhesive tape, is secured at one of reflector plate 17
Point, the face of the opposing party is secured at the first plane 10c-1 of accommodating container 10.Reflector plate 17 is fixed in accommodating container as a result,
On 10 bottom surface 10c.
Connecting member 19 is configured in the of the reflecting surface 40b of the light incident sides 40c sides of light guide plate 40 and accommodating container 10
Between two plane 10c-2 and between LED11 and the second plane 10c-2 of accommodating container 10, light guide plate 40 and LED11 is made to exist
Optically and in structural interconnection.Specifically, connecting member 19 makes shining for the light incident sides 40c and LED11 of light guide plate 40
Face 11a links.In addition, connecting member 19 with continuously cover the reflecting surface 40b of the light incident sides 40c sides of light guide plate 40 and
The mode in the face of the Z axis negative direction side of LED11 is configured.
Above-mentioned connecting member 19 is, for example, the rectangular one-faced tapes that single side has bonding plane, includes adhesive layer (adhesion
Agent) 19a and base material 19b.Base material 19b is, for example, PET (Polyethylene Terephthalate：Poly terephthalic acid second
Diol ester), adhesive layer 19a is, for example, silicon, acrylic acid.Lower surface (the Z axis of the reflecting surface 40b and LED11 of light guide plate 40 as a result,
The face of negative direction side) by coplanar it is installed on connecting member 19.
Moreover, as shown in Fig. 2, the first anti-dazzling screen 20 has the first light shield layer 20a and the second light shield layer 20b.I.e. first hides
Mating plate 20 is the anti-dazzling screen of the double-layer structural comprising the first light shield layer 20a and the second light shield layer 20b.
First light shield layer 20a is with opposed with above-mentioned side wall 10b from the lateral surface 10b-2 for the side wall 10b being stuck directions
Side wall 10b modes are covered.Specifically, in this embodiment, the first light shield layer 20a from LED11 along X-axis side
To the part of upper surface of lateral surface 10b-2 to LED11 of the opposed side wall 10b in face come along the width direction of X-direction
Cover the lateral surface 10-2 and LED11 of side wall 10b.In addition, the light incident sides 40c of the first light shield layer 20a covering diffusion sheets 14
The end of side.That is the height and position of the upper surface of the first light shield layer 20a and the height and position of the upper surface of the prismatic lens 15 of protrusion
It is roughly the same.
Above-mentioned first light shield layer 20a is, for example, the one-faced tapes for having bonding plane in the face of a side, and bonding plane is pasted onto side
The lateral surface 10b-2 of wall 10b and upper surface 10b-3.Thereby, it is possible to the lateral surface 10b-2 in side wall 10b shows adhesion
Go out in outside, the processing of planar illuminating device 1 can be carried out well.
Second light shield layer 20b is with from a part for the upper surface of the first light shield layer 20a towards with being glued for the first light shield layer 20a
The mode of side wall 10b opposed the side wall 10b of patch is covered.Specifically, the second light shield layer 20b is from the first light shield layer 20a
Upper surface a part to a part for light guide plate 40 along the first light shield layer 20a and the width of the X-direction of light guide plate 40
Direction is covered.The Y-axis of the second anti-dazzling screen 21 is born in addition, the second light shield layer 20b is formed in the corner of Y-axis positive direction side
The notch that the end of direction side is stored.
Above-mentioned second light shield layer 20b is, for example, the double faced adhesive tape that two sides has bonding plane, and a side's of Z axis negative direction side is viscous
The face of wearing is secured at the upper surface 10b-3 of side wall 10b, the first light shield layer 20a and prismatic lens 15, Z axis positive direction side it is another
The bonding plane of side is secured at liquid crystal display device.
As shown in Fig. 2, the first anti-dazzling screen 20 is in the side wall 10b (inside) along X-direction along accommodating container 10, first
The part extended to Y-axis positive direction side of light shield layer 20a covers one of the upper surface of fixed component 13, FPC12 and LED11
Point.
In addition, the first anti-dazzling screen 20 accommodating container 10 the side wall 10b, the second light shield layer 20b along X-direction to
One of the upper surface of a part of the first light shield layer 20a of part covering, LED11 and light guide plate 40 that Y-axis positive direction side extends
Point.
In addition, the first shading being stuck in the upper surface 10b-3 of the side wall 10b along Y direction of accommodating container 10
In piece 20, the second light shield layer 20b covers the upper surface of the first light shield layer 20a.
I.e. in the first anti-dazzling screen 20 along the side wall 10b sides of X-direction for being formed on accommodating container 10, first hides
Position Chong Die with the second light shield layer 20b photosphere 20a is the first light shield layer 20a to the upper of fixed component 13, FPC12 and LED11
The part that the part on surface is covered.
Second anti-dazzling screen 21 is secured at the side wall 10b other than the side wall 10b pasted for the first light shield layer 20a, covers side
The upper surface 10b-3 of wall 10b and the outer peripheral edge of light guide plate 40.
Above-mentioned second anti-dazzling screen 21 is, for example, the double faced adhesive tape that two sides has bonding plane, and a side's of Z axis negative direction side is viscous
The face of wearing is secured at the upper surface 10b-3 of side wall 10b and the outer peripheral edge of prismatic lens 15, and the opposing party's of Z axis positive direction side is viscous
The face of wearing is secured at liquid crystal display device.
Next, using Fig. 4 to the gap 2 that is formed between the first anti-dazzling screen 20 and the second anti-dazzling screen 21 that adjoin each other
It illustrates.Fig. 4 is the figure being exaggerated to the part A of Fig. 2.
As shown in figure 4, gap 2 is formed between the first anti-dazzling screen 20 and the second anti-dazzling screen 21 to adjoin each other.It is specific and
Speech, gap 2 by the notch of the second light shield layer 20b separate as defined in interval come store the end of the second anti-dazzling screen 21 and by
It is formed.Above-mentioned gap 2 L-shaped shape of layer substantially, i.e. crank shape in plan view.
Next, using Fig. 5 to being secured at the first anti-dazzling screen of the upper surface 10b-3 of the side wall 10b of accommodating container 10
20 and second anti-dazzling screen 21 illustrate.Fig. 5 is the W-W line diagrammatic cross-sections of Fig. 2.In addition, by have with shown in Fig. 2
The structural element of the identical function of structural element assign the symbol identical with symbol shown in Fig. 2, and the description thereof will be omitted.
As shown in figure 5, the first anti-dazzling screen 20 in the side wall 10b along Y direction of accommodating container 10, becomes comprising first
The double-layer structural of light shield layer 20a and the second light shield layer 20b.The 1 and second light shield layer 20b's of thickness d of above-mentioned first light shield layer 20a
Thickness d 2 can be identical.In addition, the thickness d 1 of the first light shield layer 20a is also small than the thickness d 2 of the second light shield layer 20b, also comparable
It is big.
In addition, the second anti-dazzling screen 21 in accommodating container 10 along the side wall 10b of Y direction and along X-direction
Side wall 10b becomes 1 layer of construction.The thickness D of above-mentioned second anti-dazzling screen 21 is Chong Die with the first light shield layer 20a and the second light shield layer 20b
Side wall 10b in the first anti-dazzling screen 20 thickness it is roughly the same.That is the thickness D of the second anti-dazzling screen 21 be by with the first light shield layer
The identical degree of thickness (d1+d2) that 20a and the second light shield layer 20b add up to.
The the first light shield layer 20a and the second light shield layer 20b of the thickness of above-mentioned second anti-dazzling screen 21 and the first anti-dazzling screen 20
The thickness of the part of overlapping is roughly the same, thus liquid crystal display device be installed on substantially in parallel the second light shield layer 20b and
Second anti-dazzling screen 21.As described above, the first anti-dazzling screen 20 is the of the first light shield layer 20a comprising one-faced tapes and double faced adhesive tape
The double-layer structural of two light shield layer 20b, the second anti-dazzling screen 21 are 1 layer of constructions of only one-faced tapes.That is the first anti-dazzling screen 20 and second
The layer construction of anti-dazzling screen 21 is different.
As described above, in the planar illuminating device 1 of embodiment, in the first anti-dazzling screen of the double-layer structural to adjoin each other
It is formed between second anti-dazzling screen 21 of 20 and 1 layers of construction and has the gap 2.
It is assumed that the second anti-dazzling screen 21 is formed as and 20 identical the first light shield layer as one-faced tapes of the first anti-dazzling screen
The double-layer structural of 20a and the second light shield layer 20b as double faced adhesive tape, are using the first anti-dazzling screen 20 and the second anti-dazzling screen 21
In the case of anti-dazzling screen obtained by integration, since one-faced tapes are different from the coefficient of thermal expansion of double faced adhesive tape, there are generation quilts
The optical sheet (diffusion sheet 14 and prismatic lens 15) for being bonded in anti-dazzling screen generates the possibility of fold.
On the other hand, in the planar illuminating device of embodiment 1, when 4 of periphery 3 in, is configured with 1 layer of structure
The second anti-dazzling screen 21 made, therefore the generation of the stress of the variation of use environment along with device can be inhibited.In addition, even if
It is generated in coefficient of thermal expansion different the first anti-dazzling screen 20 and the second anti-dazzling screen 21 due to the variation of the use environment of device
Stress, stress are mitigated also by the gap 2 being formed between the first anti-dazzling screen 20 and the second anti-dazzling screen 21.
Therefore, the planar illuminating device 1 of embodiment can inhibit to be bonded to the first shading together with accommodating container 10
The prismatic lens 15 of 20 and second anti-dazzling screen 21 of piece and the generation of the fold in diffusion sheet 14 maintain illumination special for a long time
Property.
In addition, as described above, in the planar illuminating device 1 of embodiment, by the way that gap 2 is set as crank shape,
Path between one anti-dazzling screen 20 and the second anti-dazzling screen 21 becomes maze configuration, therefore can prevent letting out for the light from gap 2
Leakage.
In addition, dust is attached to the first anti-dazzling screen 20 and the second anti-dazzling screen 21, therefore energy in the path in above-mentioned gap 2
It enough prevents in dust intrusion accommodating container 10.In addition, gap 2 can also be formed as the first anti-dazzling screen 20 and the second anti-dazzling screen 21
Between path be set as more complicated labyrinth shape.
In addition, as described above, in the planar illuminating device 1 of embodiment, the thickness D of the second anti-dazzling screen 21 can be set
For the thickness of the degree identical with the thickness (d1+d2) for adding up to the first light shield layer 20a and the second light shield layer 20b, therefore can
The adhesive layer for making the second anti-dazzling screen 21 is thickening, can improve the adhesive strength of the second anti-dazzling screen 21.
In addition, as described above, in the planar illuminating device 1 of embodiment, in the opposed with LED11 of container body 50
Medial surface setting frame part 51 other than medial surface, so as to make the side other than the side wall 10b opposed with LED11 of accommodating container 10
The thickness of the side wall 10b opposed with LED11 of the thickness ratio accommodating container 10 of wall 10b is thick.
In this way, make the side wall other than the side wall 10b opposed with LED11 of accommodating container 10 by the setting of frame part 51
10b is thickening, so as to make to increase with the bond area that the second anti-dazzling screen 21 bonds.But because the requirement of narrow frame is to viscous
The increase of area is closed there are the limit, therefore the raising based on the adhesive strength for making the adhesive layer of the second anti-dazzling screen 21 thickening is effective
's.
In addition, in the above-described embodiment, though make the thickness of the side wall 10b of accommodating container 10 by the setting of frame part 51
It spends thickening, but can also be not provided with frame part 51, and make the size of the thickness of the thickening frame part 51 of frame of container body 50.Or
Also the frame of container body 50 can not be made thickening, and further promote narrow frame.
In addition, as described above, in the planar illuminating device 1 of embodiment, the first light shield layer 20a covers diffusion sheet 14
The end of light incident sides 40c sides, height and position and the upper surface of the prismatic lens 15 of protrusion of the upper surface of the first light shield layer 20a
Height and position is roughly the same.I.e. in the planar illuminating device of embodiment 1, the first light shield layer 20a is not be overlapped with prismatic lens 15.
Thereby, it is possible to make the size of the thickness of the thinning first light shield layer 20a of device.
Next, the variation in gap 2 is illustrated using such as Fig. 6 A and Fig. 6 B.Fig. 6 A represent embodiment
The vertical view of the variation 1 in gap 2.Fig. 6 B are the vertical views of the variation 2 in the gap 2 for representing embodiment.In addition, about tool
The structural element for having the function identical with structural element shown in Fig. 4 assigns the symbol identical with symbol shown in Fig. 4, thus saves
Slightly its explanation.
As shown in Figure 6A, the gap 2a of first variation linear shapes in plan view.Specifically, gap 2a is
From the corner trend effective coverage 30 of the Y-axis positive direction side of the second light shield layer 20b towards the inclined rectilinear form of Y-axis positive direction.
In the above method, by being formed as tending to from the corner of the Y-axis positive direction side of the second light shield layer 20b gap 2a
Effective coverage 30 and towards the inclined rectilinear form of Y-axis positive direction, i.e., by make gap 2a to the light-emitting surface 11a hairs from LED11
The direction of the opposite side of the direction of travel (Y-axis positive direction) of the light penetrated tilts, so as to make light not to 10 external leakage of accommodating container.
In addition, as shown in Figure 6B, the gap 2b of the second variation is in curved shape in plan view.Specifically, seam
Gap 2b is the Curved that arc-shaped is bent into from the corner of the Y-axis positive direction side of the second light shield layer 20b trend effective coverage 30
Shape.
In above-mentioned form, in curved shape when gap 2b is formed as overlook observation, thus with the side of accommodating container 10
In the case that the lateral surface 10b-2 of wall 10b faces ground direct vision port 2a, the light guide plate 40 in effective coverage 30 is can't see, and is prevented
Only light leaks.
As described above, in the planar illuminating device 1 of embodiment, gap 2a, 2b are formed as into rectilinear form or curved
Curved shape, so as to prevent the intrusion of the leakage of the light from gap 2a, 2b, dust.
In addition, the gap as other variations, can also combine rectilinear form or curved shape, in the first anti-dazzling screen 20
Path is formed between the second anti-dazzling screen 21.Even aforesaid way, the leakage of light, the intrusion of dust can be also prevented.
In addition, for example also may be configured as, if not directly pasting the region of liquid crystal display device, then make the first anti-dazzling screen 20
A part and the second anti-dazzling screen 21 a part it is Chong Die, do not form gap.
Specifically, when Fig. 5 is used to be described in detail, the first anti-dazzling screen is not reached in the mounting surface of liquid crystal display device
In the case of 20 upper surface, in the side wall 10b along Y direction of accommodating container 10, the incident side of the second anti-dazzling screen 21
The end of face 40c sides can also ride over a part for the upper surface of the first anti-dazzling screen 20.
In these cases, gap is not formed between the first anti-dazzling screen 20 and the second anti-dazzling screen 21, but due to the first screening
Mating plate 20 and the second anti-dazzling screen 21 independent component that be construction different, so the use environment along with device can be inhibited
The generation of stress.
Therefore, even if in these cases, can also inhibit to be bonded to the first anti-dazzling screen 20 together with accommodating container 10
And second anti-dazzling screen 21 prismatic lens 15 and the fold in diffusion sheet 14 generation, it is same as described above, can tie up for a long time
Hold photocurrent versus light intensity.
Next, the planar illuminating device 1a of another embodiment is illustrated using Fig. 7 and Fig. 8.Fig. 7 is another
The sectional stereogram of the planar illuminating device 1a of embodiment, Fig. 8 are the vertical views being exaggerated to the part B of Fig. 7.This
Outside, the symbol identical with symbol shown in Fig. 2 about having the function of the structural element imparting identical with structural element shown in Fig. 2
Number, thus the description thereof will be omitted.
The planar illuminating device 1a of another embodiment be with 1 same structure of planar illuminating device shown in Fig. 2,
But difference is the effective coverage 30 that the end of 30 side of effective coverage of the first light shield layer 20a is extended to the second light shield layer 20b
The end of side.
Specifically, as shown in fig. 7, the first light shield layer 20a is from the side wall opposed with the face along X-direction of LED11
The whole of the upper surface of lateral surface 10b-2 to the LED11 of 10b and a part for the upper surface of light guide plate 40 and along LED11 with
And the width direction of the X-direction of light guide plate 40 is covered.In addition, the first light shield layer 20a covering diffusion sheets 14 and prism
The end of 15 respective light incident sides 40c sides of piece.
In addition, as shown in figure 8, the end of 30 side of effective coverage of the first light shield layer 20a and the second light shield layer 20b's is effective
The end part aligning of 30 side of region.Cut simultaneously in a state that the first light shield layer 20a is Chong Die with the second light shield layer 20b during fabrication
The end of disconnected 30 side of effective coverage, so as to make the end of 30 side of effective coverage of the first light shield layer 20a and the second light shield layer 20b's
The section of the end of 30 side of effective coverage is ideally aligned each other.
As described above, in the planar illuminating device 1a of another embodiment, the first light shield layer 20a and the second light shield layer
The whole of the upper surface of this 2 layers covering LED11 of 20b and a part for the upper surface of light guide plate 40.
In this way, using the upper surfaces of the first light shield layer 20a and this 2 layers of the second light shield layer 20b coverings LED11 whole and
A part for the upper surface of light guide plate 40, so as to be more reliably prevented from the intrusion of the leakage of the light from gap 2, dust.
In addition, it is that the situation of the LED of top view type is illustrated, but multiple to multiple LED11 in the above-described embodiment
LED11 is not limited to the LED of the LED of top view type or the FPC side-view types orthogonal with light-emitting surface 11a of installation.
In addition, can also replace LED11 as multiple point source of lights, using multiple LED11 are integrated and be configured to straight
Linear light source (linear light source).Specifically, multiple LED chips for example can also be used to be installed in the substrate of strip and more
The linear light source that a LED chip is integrally covered by sealing resin.In this case, LED chip can be replaced into this reality
With novel light source.
In addition, the above embodiment does not limit the utility model.The utility model include be appropriately combined it is above-mentioned each
The utility model for forming element and forming.In addition, those skilled in the art can easily export further effect, variation.Cause
This, the wider mode of the utility model is not limited to the above embodiment, and can carry out various changes.
Claims (9)
1. a kind of planar illuminating device, wherein, have：
Light source；
Light guide plate, above-mentioned light source are configured at the light incident sides of the light guide plate；
Accommodating container, the accommodating container have the side wall for the circumferential lateral surface for surrounding above-mentioned light source and above-mentioned light guide plate；
First anti-dazzling screen, first anti-dazzling screen be pasted on side wall opposed with above-mentioned light source in above-mentioned side wall lateral surface and on
End face covers a part for the upper surface of the upper surface, the upper surface of above-mentioned light source and above-mentioned light guide plate；And
Second anti-dazzling screen, second anti-dazzling screen are pasted on the upper of the side wall other than the above-mentioned side wall pasted for above-mentioned first anti-dazzling screen
End face at least covers the upper surface,
Above-mentioned first anti-dazzling screen includes：
The first light shield layer covered from the lateral surface for the above-mentioned side wall being stuck towards the side wall opposed with the side wall；And
The side opposed with the above-mentioned side wall pasted for above-mentioned first light shield layer from the part direction of the upper surface of above-mentioned first light shield layer
The second light shield layer that wall is covered.
2. planar illuminating device according to claim 1, wherein,
The part of upper surface of above-mentioned first light shield layer from the lateral surface of above-mentioned side wall being stuck to above-mentioned light source carries out
Covering.
3. planar illuminating device according to claim 1, wherein,
It is formed and had the gap between above-mentioned first anti-dazzling screen and above-mentioned second anti-dazzling screen to adjoin each other.
4. planar illuminating device according to claim 2, wherein,
It is formed and had the gap between above-mentioned first anti-dazzling screen and above-mentioned second anti-dazzling screen to adjoin each other.
5. planar illuminating device according to claim 3, wherein,
Above-mentioned gap is in crank shape in plan view.
6. planar illuminating device according to claim 4, wherein,
Above-mentioned gap is in crank shape in plan view.
7. planar illuminating device according to claim 1, wherein,
Above-mentioned first light shield layer is one-faced tapes,
Above-mentioned second light shield layer and above-mentioned second anti-dazzling screen are double faced adhesive tapes.
8. planar illuminating device according to any one of claims 1 to 7, wherein,
Above-mentioned at the thickness of above-mentioned second anti-dazzling screen and the above-mentioned first light shield layer position Chong Die with above-mentioned second light shield layer
The thickness of one anti-dazzling screen is roughly the same.
9. a kind of planar illuminating device, wherein, have：
Light source；
Light guide plate, above-mentioned light source are configured at the light incident sides of the light guide plate；
Accommodating container, the accommodating container have the side wall for the circumferential lateral surface for surrounding above-mentioned light source and above-mentioned light guide plate；
First anti-dazzling screen, first anti-dazzling screen be pasted on side wall opposed with above-mentioned light source in above-mentioned side wall lateral surface and on
End face covers a part for the upper surface of the upper surface, the upper surface of above-mentioned light source and above-mentioned light guide plate；And
Second anti-dazzling screen, second anti-dazzling screen are pasted on the upper of the side wall other than the above-mentioned side wall pasted for above-mentioned first anti-dazzling screen
End face,
Above-mentioned first anti-dazzling screen is different from the layer construction of above-mentioned second anti-dazzling screen.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016235377 | 2016-12-02 | ||
| JP2016-235377 | 2016-12-02 | ||
| JP2017162311A JP6608886B2 (en) | 2016-12-02 | 2017-08-25 | Surface lighting device |
| JP2017-162311 | 2017-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207529073U true CN207529073U (en) | 2018-06-22 |
Family
ID=62566172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721604386.2U Withdrawn - After Issue CN207529073U (en) | 2016-12-02 | 2017-11-27 | Planar illuminating device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6608886B2 (en) |
| CN (1) | CN207529073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153043A (en) * | 2016-12-02 | 2018-06-12 | 美蓓亚三美株式会社 | Planar illuminating device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005078917A (en) * | 2003-08-29 | 2005-03-24 | Kawaguchiko Seimitsu Co Ltd | Backlight device |
| JP5091602B2 (en) * | 2007-09-25 | 2012-12-05 | 株式会社ジャパンディスプレイセントラル | Surface light source device and liquid crystal display device using the same |
| US8068197B2 (en) * | 2009-01-19 | 2011-11-29 | Hitachi Displays, Ltd. | Liquid crystal display device |
-
2017
- 2017-08-25 JP JP2017162311A patent/JP6608886B2/en active Active
- 2017-11-27 CN CN201721604386.2U patent/CN207529073U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153043A (en) * | 2016-12-02 | 2018-06-12 | 美蓓亚三美株式会社 | Planar illuminating device |
| CN108153043B (en) * | 2016-12-02 | 2021-01-26 | 美蓓亚三美株式会社 | Planar lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6608886B2 (en) | 2019-11-20 |
| JP2018092897A (en) | 2018-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10989860B2 (en) | Backlight module and display device | |
| CN207020329U (en) | Planar illuminating device | |
| CN207145998U (en) | Planar illuminating device | |
| CN205485155U (en) | Illumination device and display device | |
| CN109581735A (en) | Lighting device and the display device for having it | |
| KR20150052927A (en) | Organic light emitting diode display and method for preparing the same | |
| CN105549265B (en) | A kind of backlight module and liquid crystal display | |
| JP6779805B2 (en) | Backlight device and liquid crystal display device equipped with this | |
| CN103792729A (en) | Thin display module | |
| CN108458275A (en) | Planar illuminating device | |
| JP2017037140A (en) | Storage case, and liquid crystal display including the same | |
| CN108153043A (en) | Planar illuminating device | |
| JP6303972B2 (en) | Surface light source device, display device, and electronic device | |
| CN207529073U (en) | Planar illuminating device | |
| JP2015118758A (en) | LED backlight | |
| CN206988843U (en) | Planar illuminating device and substrate | |
| CN208268885U (en) | Planar illuminating device | |
| CN107153298A (en) | Planar light source device, display device and electronic equipment | |
| CN107664872A (en) | Back lighting device and there is its liquid crystal display device | |
| CN107621667B (en) | Planar lighting device | |
| CN206757253U (en) | Lighting device and liquid crystal display device | |
| US10175408B2 (en) | Planar illumination apparatus | |
| CN110168437A (en) | Frame, planar light source device, display device and electronic equipment | |
| CN108980684A (en) | Planar illuminating device | |
| US10705289B2 (en) | Lighting device and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180622 Effective date of abandoning: 20210126 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180622 Effective date of abandoning: 20210126 |