CN207458813U - Backlight module and illuminated keyboard - Google Patents
Backlight module and illuminated keyboard Download PDFInfo
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- CN207458813U CN207458813U CN201721426287.XU CN201721426287U CN207458813U CN 207458813 U CN207458813 U CN 207458813U CN 201721426287 U CN201721426287 U CN 201721426287U CN 207458813 U CN207458813 U CN 207458813U
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- 238000000605 extraction Methods 0.000 claims abstract description 41
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- 238000005286 illumination Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005142 aphototropism Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model provides a kind of backlight module and illuminated keyboard, and backlight module is applied in illuminated keyboard, which includes a light guide plate, multiple first LED, multiple 2nd LED and multiple 3rd LED.The light guide plate has one first incidence surface, and the first LED is respectively arranged on the middle section of light guide plate, and each first LED is multidirectional light extraction, to provide light to light guide plate.2nd LED corresponds to the first incidence surface and sets respectively, and each 2nd LED is unidirectional light extraction.3rd LED corresponds to the first incidence surface respectively and the corner of neighbouring light guide plate is set, and each 3rd LED is also unidirectional light extraction, and the light emitting angle of the 2nd LED is more than the light emitting angle of the 3rd LED.By way of mixed configuration LED, make backlight module that there is splendid outgoing light homogeneity and uniformity, improve the luminescent quality of illuminated keyboard.
Description
Technical field
The utility model is related to backlight module field, more particularly to a kind of backlight module and illuminated keyboard.
Background technology
With the progress of science and technology, computer becomes indispensable data type electronic device in life, no matter desktop computer
Or laptop, it all needs by keyboard or mouse as main input equipment.Similarly, because of the fast development of technology,
The functionality of keyboard is also promoted therewith with convenience.In view of the common people are increasingly longer using the time of computer, and place is increasingly
From inflexible limit, in order to still be able to clear identifying keyboard button in the environment of insufficient light for user, related dealer will
The backlight module of traditional application on the display device be combined with each other with keyboard, forms the keyboard of tool illumination effect.
In addition, based on the mature technology of present light emitting diode (hereinafter referred to as LED) and the lightening need of backlight module
It asks, therefore most of backlight modules use LED as light source, and the installation position of corresponding LED can divide into side entrance back mould
Group and down straight aphototropism mode set.Existing backlight module, using single LED as light source, but since LED has high be directed toward
Property and limited light emitting angle, therefore guided via leaded light component and be projected to the light on button and can generate non-uniform feelings
Condition.That is single button even keyboard integrally occurs that subregion is brighter, and the dark light and shade uneven phenomenon in subregion causes key
The illumination effect of disk product is had a greatly reduced quality, and effect is prompted in the illumination influenced to user.
Utility model content
The technical problems to be solved in the utility model is to overcome the outgoing light homogeneity of backlight module in the prior art not
The defects of sufficient, provides a kind of backlight module and illuminated keyboard, by the LED and leaded light component of mix and match, reaches and effectively carries
When rising the purpose of backlight module outgoing light homogeneity and uniformity, promote the luminescent quality of illuminated keyboard, and reducing exploitation design
Between and production cost.
The utility model is to solve above-mentioned technical problem by following technical proposals：
A kind of backlight module, is applied to an illuminated keyboard, and the backlight module includes：One light guide plate, the light guide plate
With one first incidence surface；Multiple first LED, multiple first LED are arranged on the middle section of the light guide plate, and multiple institutes
The first LED is stated to be multidirectional light extraction and be used to provide light to the light guide plate；Multiple 2nd LED, multiple 2nd LED points
It does not correspond to first incidence surface to set, and multiple 2nd LED are unidirectional light extraction；And multiple 3rd LED, it is multiple described
3rd LED corresponds to first incidence surface respectively and the corner of the neighbouring light guide plate is set, and multiple 3rd LED are list
To light extraction, and the 2nd LED light emitting angles are more than the 3rd LED light emitting angles.As a result, by using a variety of difference LED
Mix and match set-up mode, the outgoing light homogeneity of backlight module is effectively improved, so that carrying the hair of the backlight module
Light keyboard has more preferably illumination effect.
It is preferred that the position that first incidence surface corresponds to the 2nd LED is equipped with multiple lens arrays.By imitating adjust
The phenomenon that whole 2nd LED is incident to the light angle of light guide plate, and further the light and shade at neighbouring first incidence surface of elimination is uneven.
It is preferred that the first LED is arranged at the light guide plate with the arrangement mode of at least two row, such as different lines can be made
The first LED be setting form interlaced with each other or the setting form to correspond to each other so that the light of light guide plate middle section
Uniform light-out effect is more presented in line.
It is preferred that the light emitting angle of the 2nd LED has larger shine between 120~170 degree, by using this
2nd LED of angle mainly for light source, makes incidence surface have enough incident ray intensity as incidence surface, and can be preliminary
Prevent the situation of light and shade unevenness at neighbouring incidence surface.
It is preferred that the light emitting angle of the 3rd LED is between 25~60 degree, it is smaller by using light emitting angle as a result,
And the 3rd LED of the illumination mode more collimated is showed, the brightness in light-guide plate corner region is pointedly supplied, so that leading
Each region of tabula rasa all shows uniform light extraction.
The utility model additionally provides a kind of illuminated keyboard, including：One backlight module, the backlight module include：One
Light guide plate, the light guide plate have one first incidence surface and a light-emitting surface, and first incidence surface is vertical with the light-emitting surface adjacent
It connects, and the light-emitting surface is equipped with multiple microstructured areas；Multiple first LED, multiple first LED are arranged on the light guide plate
Middle section, and multiple first LED are multidirectional light extraction and are used to provide light to the light guide plate；Multiple 2nd LED,
Multiple 2nd LED correspond to first incidence surface and set respectively, and multiple 2nd LED are unidirectional light extraction；It is and more
A 3rd LED, multiple 3rd LED correspond to first incidence surface respectively and the corner of the neighbouring light guide plate is set, more
A 3rd LED is unidirectional light extraction, and the light emitting angle of the 2nd LED is more than the light emitting angle of the 3rd LED；And
Multiple key groups, multiple key groups correspond to the one side that the microstructured area sets and is located at the backlight module, Duo Gesuo
State the light that key group receives the backlight module.Different LED is set by being mixed on backlight module, is effectively improved
The whole outgoing light homogeneity of backlight module, so that each key group of illuminated keyboard can have consistent and brightness uniformity shine
Effect improves the luminescent quality of product.
It is preferred that the position that first incidence surface corresponds to the 2nd LED is equipped with multiple lens arrays.By effectively
The light angle that the 2nd LED is incident to light guide plate is adjusted, further eliminates the phenomenon that light and shade at neighbouring first incidence surface is uneven.
It is preferred that the light guide plate also has one second incidence surface, which is set with respect to first incidence surface, and
The corner of the light guide plate is provided with multiple 3rd LED in second incidence surface.It can further make light guide plate each as a result,
Corner is respectively provided with enough light to occur the phenomenon that forming light extraction, avoid corner regions excessively dark.
It is preferred that the light guide plate also has one second incidence surface, which is set with respect to first incidence surface, and
Second incidence surface is provided with multiple 2nd LED.Thus the loss that can prevent light from being generated when guiding is with transferring, and make to lead
Tabula rasa forms the situation of dark space in the region away from incidence surface due to not enough light.
It is preferred that effectively expanded to enable to be arranged on the light angle after the 2nd LED incidences of the second incidence surface, into
And the illumination effect of light and shade unevenness is eliminated, which, which corresponds to, is equipped with multiple lens arrays at second LED.
It is preferred that the light guide plate also has one second incidence surface, which is set with respect to first incidence surface, and
Multiple 2nd LED are provided on second incidence surface, which is provided with multiple adjacent to the corner of the light guide plate
Three LED.The issuable insufficient light phenomenon in opposite first incidence surface region can be eliminated simultaneously as a result, gone out so as to promote entirety
The light uniformity and uniformity.
It is preferred that second incidence surface, which corresponds to, is equipped with multiple lens arrays at second LED, effectively to adjust the 2nd LED
The light emitting angle of light guide plate is incident to from the second incidence surface.
It is preferred that the first LED can be alternatively arranged setting along a long axis direction of the light guide plate, that is, make the first LED
It is set along the long side direction of light guide plate, to prevent from generating the phenomenon that light extraction is uneven in middle section.
It is preferred that the first LED is arranged at the light guide plate with the arrangement mode of at least two row, such as different lines can be made
The first LED be setting form interlaced with each other or the setting form to correspond to each other so that the light of light guide plate middle section
Uniform light-out effect is more presented in line.
It is preferred that the light emitting angle of the 2nd LED has larger shine between 120~170 degree, by using this
2nd LED of angle mainly for light source, makes incidence surface have enough incident ray intensity as incidence surface, and can be preliminary
Prevent the situation of light and shade unevenness at neighbouring incidence surface.
It is preferred that the light emitting angle of the 3rd LED is between 25~60 degree, it is smaller by using light emitting angle as a result,
And the 3rd LED of the illumination mode more collimated is showed, the brightness in light-guide plate corner region is pointedly supplied, so that leading
Each region of tabula rasa all shows uniform light extraction.
The positive effect of the utility model is：
The backlight module and illuminated keyboard by using the mode that a variety of different LED mixing are set, effectively improve whole
The outgoing light homogeneity and uniformity of body eliminate the phenomenon that illuminated keyboard luminance shortage of the prior art is with unevenness, improve
Integral luminous quality.Simultaneously reduce exploitation with design time and production cost, using light guide plate easy structure and coordinate not
The mode that same LED mixing is set realizes the effect of uniform light extraction.
Description of the drawings
Figure 1A is the stereoscopic schematic diagram of the first embodiment of the backlight module of one embodiment of the utility model.
Figure 1B is the floor map of the first embodiment of the backlight module of one embodiment of the utility model.
Fig. 2 is the plane figure schematic diagram of the second embodiment of the backlight module of one embodiment of the utility model.
Fig. 3 is the floor map of the 3rd embodiment of the backlight module of one embodiment of the utility model.
Fig. 4 is the floor map of the 4th embodiment of the backlight module of one embodiment of the utility model.
Fig. 5 is the plane figure schematic diagram of the 5th embodiment of the backlight module of one embodiment of the utility model.
Fig. 6 is the floor map of the sixth embodiment of the backlight module of one embodiment of the utility model.
Fig. 7 is the floor map of the 7th embodiment of the backlight module of one embodiment of the utility model.
Fig. 8 is the decomposition diagram of the illuminated keyboard of one embodiment of the utility model.
Reference sign：
1：Backlight module
10：Light guide plate
101：First incidence surface
1011：Lens array
102：Perforation
103：Light-emitting surface
1031：Microstructured area
104：Second incidence surface
1041：Lens array
11：First LED
12：2nd LED
13：3rd LED
2：Illuminated keyboard
20：Keyboard group
A：Long axis
α：The light emitting angle of 2nd LED
β：The light emitting angle of 3rd LED
Specific embodiment
It names preferred embodiment, and becomes apparent from intactly illustrating the utility model with reference to attached drawing.
In view of current illuminated keyboard generally has the phenomenon that luminance nonuniformity, luminous product of the phenomenon except that can reduce product
Outside matter, the operation viewing of user can be also influenced, therefore, the present inventor herein proposes a kind of backlight module, with splendid
Outgoing light homogeneity, so that its illuminated keyboard applied can also have splendid light extraction and illuminating effect.Such as Figure 1A and 1B
It is shown, it is the stereoscopic schematic diagram and floor map of the first embodiment of the utility model embodiment.The utility model carries
For a kind of backlight module 1, it is used to apply in an illuminated keyboard.Backlight module 1 includes a light guide plate 10, multiple first
LED11, multiple 2nd LED12 and multiple 3rd LED13.
Light guide plate 10 has one first incidence surface 101, and the first LED11 is respectively provided at the middle section of light guide plate 10, and each
First LED11 is multidirectional light extraction, and light is provided to light guide plate 10.Preferably, a long axis of the first LED11 along light guide plate 10
A directions are alternatively arranged setting, which corresponds to the axial direction of 10 long side of light guide plate, thus allows the middle section of light guide plate 10 can
Obtain the incident light being more uniformly distributed.2nd LED12 corresponds to the first incidence surface 101 and sets respectively, and each 2nd LED12 is unidirectionally to go out
Light.3rd LED13 corresponds to the first incidence surface 101 respectively and the corner of neighbouring light guide plate 10 is set, and each 3rd LED13 is also to be single
To light extraction, and the light emitting angle α of the 2nd LED12 is more than the light emitting angle β of the 3rd LED13.It is set as a result, by this mixing
The mode of LED allows each region of light guide plate 10 all to have enough amount lights, and generates uniform light-out effect.
More specifically, light guide plate 10 can be equipped with multiple perforation 102 or fluting (not shown), to accommodate first
LED11, and light guide plate 10 also has a light-emitting surface 103 with 101 perpendicular abutment of the first incidence surface, for making the first LED11, the
Two LED12 and the 3rd LED13 are incident to the light after light guide plate 10 and form light extraction through guiding.First LED11 can be more preferably
Wafer-level package (Chip Scale Package, CSP) LED shines with smaller size smaller and multi-directionally, due to first
LED11 is the light source of multi-direction light extraction, therefore its light sent is incident to light guide plate by the medial surface of perforation 102 or fluting
10, can enough light effectively be provided to carry out guiding light extraction to 10 middle section of light guide plate, so as to solve passing light guide plate 10
The light extraction of middle section is uneven or the problem of luminance shortage, and can avoid that unidirection luminous that 10 middle section of light guide plate is caused to be formed is bright
Band is so that the first LED11 has at least four light directions as an example phenomena such as clear zone, in the present embodiment.2nd LED12 and
Three LED13 respectively correspond to the first incidence surface 101 set and form side entering type light, and using light emitting angle it is larger second
LED12 is as the first incidence surface 101 mainly for light source, and the 3rd LED13 can then supply the dark space at 10 edge of light guide plate, and then
Light guide plate 10 is allowed to form uniform and consistent light.Wherein, it is preferred that the light emitting angle α of the 2nd LED12 can be at 120~170 degree
Between, the phenomenon that light and shade is uneven is generated with the region for preventing neighbouring first incidence surface 101, the light emitting angle β of the 3rd LED13 then exists
Between 25~60 degree, to achieve the effect that supply dark corner using the light extraction mode more collimated.It is described herein to shine
Angle refers to the light-emitting angle of the 2nd LED12 and the 3rd LED13 in itself, and the light shown in Figure 1B is only used for signal, not
Represent actual light extraction mode.
As shown in Fig. 2, its floor map for the second embodiment of the utility model embodiment.In this embodiment party
In formula, the first incidence surface 101 corresponds to the 2nd LED12 and is equipped with multiple lens arrays 1011, for increasing and adjusting the 2nd LED12
From the first incidence surface 101 be incident to light guide plate 10 after light angle, and further eliminate light guide plate 10 correspond to any two
The dark space that region is formed between the 2nd adjacent LED12 avoids producing adjacent to the region of the first incidence surface 101 in light-emitting surface 103
The light-emitting phenomenon that raw light and shade is interlocked further promotes whole outgoing light homogeneity.Wherein, lens array 1011 can be continuous wave
Shape structure or for continuous laciniation, herein by lens array 1011 for exemplified by wavelike structure.In addition, for that can make
Backlight module 1 is used in illuminated keyboard and can form corresponding region light extraction for each button, is provided on light-emitting surface 103
Multiple microstructured areas 1031.
As shown in figure 3, its floor map for the 3rd embodiment of the utility model embodiment.In present embodiment
In, light guide plate 10 has one second incidence surface 104, which is set with respect to the first incidence surface 101, and the
Two incidence surfaces 104 are equipped with multiple 3rd LED13 adjacent to the corner regions of light guide plate 10.The dark space in 10 corner of light guide plate was always
Toward the light and shade unevenness region for being badly in need of eliminating, and since light transfers, distance is more remote, and energy dissipation is also more, therefore in order to prevent
There is luminance shortage phenomenon with respect to the corner regions of the first incidence surface 101 and neighbouring light guide plate 10, it need to be at the second incidence surface 104
The 3rd LED13 is also provided with, goes out luminous intensity and the uniformity for 1 entirety of enhancing backlight module, similarly, can also prevent
The light incident from the first incidence surface 101 leads to the problem of luminance shortage after being transferred to distant place, light guide plate 10 effectively to be made to exist
Uniform light extraction is formed on light-emitting surface 103.
As shown in figure 4, its floor map for the 4th embodiment of utility model embodiment.In present embodiment
In, on the second incidence surface 104 in addition to being provided with the 3rd LED13, multiple 2nd LED12 are also provided with, thus effectively
The phenomenon that preventing single-sided illumination from light luminance may be caused insufficient, and provide uniformly and there is the light extraction of enough brightness.In addition, position
In the second incidence surface 104 the 2nd LED12 except can be as shown in Figure 4 symmetrical with the 2nd LED12 of the first incidence surface 101
Setting is outer or mode that be mutually staggered each other.
As shown in figure 5, its floor map for the 5th embodiment of the utility model embodiment.In present embodiment
In, the first incidence surface 101 and the second incidence surface 104 correspond to the 2nd LED12 and are equipped with multiple lens arrays 1041,1011 respectively,
Effectively to adjust and expand each 2nd LED12 after the first incidence surface 101 and the second incidence surface 104 are incident to light guide plate 10
Light emitting angle eliminates light guide plate 10 in 101 region of the second incidence surface 104 and the first incidence surface, and corresponding any two is adjacent
The dark spaces that are formed of the 2nd LED12, promote the whole outgoing light homogeneity of light guide plate 10.
As shown in Figure 6 and Figure 7, it is the sixth embodiment of the utility model embodiment and putting down for the 7th embodiment
Face schematic diagram.First LED11 in addition to the single-row setting of middle section as described above in light guide plate 10, also can such as Fig. 6 and
Shown in Fig. 7, set in middle section in the spread pattern of at least two row.Be in figure 6 with the first LED11 of different lines each other
Exemplified by staggered mode, and be in the figure 7 in a manner of the first LED11 of different lines each other corresponding arrangement exemplified by.
These layouts can more easily promote the light luminance of the middle section of light guide plate 10, avoid light ray energy due to transferring decrease
Influence the outgoing light homogeneity of the middle section of light guide plate 10.
As shown in figure 8, the utility model also provides a kind of illuminated keyboard 2, including a backlight module 1 and multiple key groups
20.Backlight module 1, which includes a light guide plate 10, one the oneth LED11, one the 2nd LED12 and one the 3rd LED13, light guide plate 10, to be had
One first incidence surface 101 and a light-emitting surface 103, the first incidence surface 101 are set with 103 perpendicular abutment of light-emitting surface, and in light-emitting surface
103 are equipped with multiple microstructured areas 1031.First LED11 is located at 10 middle section of light guide plate, and each first LED11 is multidirectional
Light extraction, to provide light to light guide plate 10, in addition, more preferably, sides of the first LED11 along a major axis A of light guide plate 10
To spread configuration, which corresponds to the axial direction of 10 long side of light guide plate.2nd LED12 corresponds to the first incidence surface 101 and sets respectively
It puts, and each 2nd LED12 is unidirectional light extraction, the 3rd LED13 then corresponds to the first incidence surface 101 and respectively adjacent to light guide plate 10
Corner is set, and each 3rd LED13 is also unidirectional light extraction, and the light emitting angle of the 2nd LED12 is luminous more than the 3rd LED13
Angle.Key group 20 corresponds to those microstructured areas 1031 and is arranged on 1 one side of backlight module, to receive from backlight module 1
Light reaches illumination effect.The backlight module 1 makes leaded light through the setting of the first LED11, the 2nd LED12 and the 3rd LED13
Plate 10 is whole to show uniform light extraction, and light is avoided be subject to transferring or incoming position is influenced light to be caused excessively to be concentrated
In subregion, and then cause the light extraction in other regions excessively dark, be thus respectively provided with each key group 20 consistent and uniform luminous
Effect improves the luminescent quality of illuminated keyboard 2.Similarly, the light emitting angle α of the 2nd LED12 can between 120~170 degree,
And the light emitting angle β of the 3rd LED13, between 25~60 degree, the light emitting angle on the 2nd LED12 and the 3rd LED refer to figure
1B, remaining details technical characteristic then refer to foregoing content.
As shown in Fig. 2, the first incidence surface 101 of light guide plate 10, which can correspond to the 2nd LED12, is equipped with multiple lens arrays 1011,
Effectively to expand the light of the 2nd LED12 from the angle after the entrance of the first incidence surface 101, and further eliminate neighbouring first and enter
The light and shade uneven phenomenon in 101 region of smooth surface.Again or as shown in figure 3, light guide plate 10 can also have opposite first incidence surface 101 to set
One second incidence surface 104 put, and in the second incidence surface 104 multiple three are additionally provided with adjacent to the corner regions of light guide plate 10
LED13, so that the 3rd LED13 that 10 each corner regions of light guide plate can more be collimated by the light extraction light that is provided is formed
Light extraction, and can avoid the problem that out luminance shortage.Again or as shown in figure 4, the second incidence surface 104 except being equipped with the 3rd LED13
Outside, multiple 2nd LED12 can be also equipped with, to avoid there is the problem of whole emitting brightness of backlight module 1 is insufficient.Again or such as the
Shown in 5 figures, also corresponding 2nd LED12 of the second incidence surface 104 is provided with multiple lens arrays 1041, each further to expand
A 2nd LED12 is incident to the light-emitting angle after light guide plate 10, positively eliminates light and shade unevenness at neighbouring second incidence surface 104
Phenomenon.Again or as shown in Fig. 6 and Fig. 7, the first LED11 can be in the arrangement side of at least two row in the middle section of light guide plate 10
Formula, shown in Fig. 6 be different lines the first LED11 between be staggered layout type, and different lines shown in Fig. 7 that make
It is to correspond the layout type of arrangement between first LED11, making the middle section of light guide plate 10 as a result, have can be with second
Enough light luminances that LED12 and the 3rd LED13 match, make light guide plate 10 form uniform light extraction.Other details
Technical characteristic then refer to foregoing content.
In conclusion the backlight module and illuminated keyboard of the utility model, the mode set using LED mixing, effectively
Ground improves the uniformity and uniformity of whole light extraction, eliminates existing illuminated keyboard luminance shortage and uneven phenomenon, is promoted
Integral luminous quality.Exploitation and the time in design and production cost are reduced simultaneously, are coordinated using simple light conducting plate structure
Different LED realizes uniformity light-out effect by way of mixing and setting.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
Member can make these embodiments numerous variations or repair on the premise of the principle and essence without departing substantially from the utility model
Change, but these change and modification each fall within the scope of protection of the utility model.
Claims (10)
1. a kind of backlight module is applied to an illuminated keyboard, which is characterized in that the backlight module includes：
One light guide plate, the light guide plate have one first incidence surface；
Multiple first LED, multiple first LED are arranged on the middle section of the light guide plate, and multiple first LED are
Multidirectional light extraction simultaneously is used to provide light to the light guide plate；
Multiple 2nd LED, multiple 2nd LED correspond to first incidence surface and set respectively, and multiple 2nd LED are equal
For unidirectional light extraction；And
Multiple 3rd LED, multiple 3rd LED correspond to first incidence surface respectively and the corner of the neighbouring light guide plate is set
It puts, multiple 3rd LED are unidirectional light extraction, and the light emitting angle of the 2nd LED is more than the light emitting anger of the 3rd LED
Degree.
2. backlight module as described in claim 1, which is characterized in that first incidence surface corresponds to the position of the 2nd LED
Multiple lens arrays are installed.
3. backlight module as described in claim 1, which is characterized in that the first LED is set with the arrangement mode of at least two row
It is placed in the light guide plate.
4. the backlight module as described in claim 1, which is characterized in that the light emitting angle of the 2nd LED is 120~170
Between degree.
5. backlight module as described in claim 1, which is characterized in that the light emitting angle of the 3rd LED 25~60 degree it
Between.
6. a kind of illuminated keyboard, which is characterized in that it includes：
One backlight module, the backlight module include：
One light guide plate, the light guide plate have one first incidence surface and a light-emitting surface, first incidence surface and the light-emitting surface
Perpendicular abutment, and the light-emitting surface is equipped with multiple microstructured areas；
Multiple first LED, multiple first LED are arranged on the middle section of the light guide plate, and multiple first LED are
Multidirectional light extraction simultaneously is used to provide light to the light guide plate；
Multiple 2nd LED, multiple 2nd LED correspond to first incidence surface and set respectively, and multiple 2nd LED are equal
For unidirectional light extraction；And
Multiple 3rd LED, multiple 3rd LED correspond to first incidence surface respectively and the corner of the neighbouring light guide plate is set
It puts, multiple 3rd LED are unidirectional light extraction, and the light emitting angle of the 2nd LED is more than the light emitting anger of the 3rd LED
Degree；And
Multiple key groups, multiple key groups correspond to the one side that the microstructured area sets and is located at the backlight module, more
A key group receives the light of the backlight module.
7. illuminated keyboard as claimed in claim 6, which is characterized in that first incidence surface corresponds to the position of the 2nd LED
Multiple lens arrays are installed.
8. illuminated keyboard as claimed in claim 6, which is characterized in that the first LED is set with the arrangement mode of at least two row
It is placed in the light guide plate.
9. illuminated keyboard as claimed in claim 6, which is characterized in that the light emitting angle of the 2nd LED is at 120~170 degree
Between.
10. illuminated keyboard as claimed in claim 6, which is characterized in that the light emitting angle of the 3rd LED 25~60 degree it
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426287.XU CN207458813U (en) | 2017-10-31 | 2017-10-31 | Backlight module and illuminated keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721426287.XU CN207458813U (en) | 2017-10-31 | 2017-10-31 | Backlight module and illuminated keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207458813U true CN207458813U (en) | 2018-06-05 |
Family
ID=62252799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721426287.XU Active CN207458813U (en) | 2017-10-31 | 2017-10-31 | Backlight module and illuminated keyboard |
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| CN (1) | CN207458813U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108898951A (en) * | 2018-07-27 | 2018-11-27 | 维沃移动通信有限公司 | a mobile terminal |
| US11404609B1 (en) | 2021-01-27 | 2022-08-02 | Chicony Power Technology Co., Ltd. | Light-emitting module |
| TWI804723B (en) * | 2019-04-10 | 2023-06-11 | 美商戴爾產品有限公司 | Portable information handling system, keyboard, and method for illumination of keyboard of information handling system |
| US20240329292A1 (en) * | 2023-03-27 | 2024-10-03 | Chicony Electronics Co., Ltd. | Illuminated keyboard and backlight module thereof |
-
2017
- 2017-10-31 CN CN201721426287.XU patent/CN207458813U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108898951A (en) * | 2018-07-27 | 2018-11-27 | 维沃移动通信有限公司 | a mobile terminal |
| TWI804723B (en) * | 2019-04-10 | 2023-06-11 | 美商戴爾產品有限公司 | Portable information handling system, keyboard, and method for illumination of keyboard of information handling system |
| US11404609B1 (en) | 2021-01-27 | 2022-08-02 | Chicony Power Technology Co., Ltd. | Light-emitting module |
| US20240329292A1 (en) * | 2023-03-27 | 2024-10-03 | Chicony Electronics Co., Ltd. | Illuminated keyboard and backlight module thereof |
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