CN108447724B - Illuminated keyboard - Google Patents
Illuminated keyboard Download PDFInfo
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- CN108447724B CN108447724B CN201810498520.8A CN201810498520A CN108447724B CN 108447724 B CN108447724 B CN 108447724B CN 201810498520 A CN201810498520 A CN 201810498520A CN 108447724 B CN108447724 B CN 108447724B
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- Prior art keywords
- light
- light guide
- guide sheet
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- plural number
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/036—Light emitting elements
- H01H2219/044—Edge lighting of layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/062—Light conductor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Push-Button Switches (AREA)
Abstract
The present invention provides a kind of illuminated keyboard, includes the backlight module for having the key mould group of plural push-button unit and being set to below key mould group.Backlight module includes light guide plate, anti-dazzling screen and light source unit.Light guide plate includes corresponding plural push-button unit interval setting and by interconnecting piece locally-attached plural light guide sheet each other, and has light guide sheet gap between the light emission side face of adjacent light guide sheet.Anti-dazzling screen includes the plural transmittance section with transmittance section edge, and the light emission side face of each light guide sheet has light gap in the upright projection position of corresponding transmittance section in transmittance section and between its transmittance section edge.Light source unit includes circuit of light sources layer and plural light-emitting component, and plural light-emitting component respectively provides light towards corresponding light incident sides, and each light guide sheet guiding light is at least partly gone out light gap from its light emission side face and projected towards corresponding push-button unit.
Description
Technical field
The present invention is about a kind of illuminated keyboard, specifically, the present invention goes out shining for light from light guide sheet edge about a kind of
Keyboard.
Background technique
In order to smoothly operate keyboard in dim environment, illuminated keyboard is increasingly becoming the primary selection of consumer.
Known illuminated keyboard is used cooperatively the light guide plate of corresponding keyboard size usually using several light emitting diodes as light source, with
Reach the illumination effect of entire keyboard.However, as key is different from the distance of light source, so that the brightness of key light emitting is not yet
Together, it causes keyboard Integral luminous uniformity bad, influences visual effect.
Therefore, how to promote the uniformity of luminance of luminous button is one of the design focal point of illuminated keyboard.
Summary of the invention
One of the objects of the present invention is to provide a kind of illuminated keyboard, the edge by each light guide sheet goes out light, to be promoted
Illumination effect.
Another object of the present invention is to provide a kind of illuminated keyboards, and by plural light guide sheet, locally connection forms single lead
Tabula rasa, with the assembling steps of the individual light guide sheets of simplification.
In one embodiment of the invention, illuminated keyboard includes key mould group and backlight module.Key mould group includes plural key
Unit.Backlight module is set to below the key mould group, which includes light guide plate, anti-dazzling screen and light source unit.It is guide-lighting
Plate includes plural light guide sheet and interconnecting piece, which corresponds to plural number push-button unit interval setting and by the interconnecting piece
Part connection, the plural number light guide sheet respectively have light emission side face and light incident sides each other, and have leaded light between adjacent light guide sheet
Piece gap.Anti-dazzling screen is set to the side of the light guide plate, which includes plural transmittance section, which respectively corresponds
The plural number light guide sheet setting, respectively the transmittance section have transmittance section edge, respectively the light emission side face of the light guide sheet in it is corresponding this thoroughly
Light portion has upright projection, the transmittance section side of the upright projection position in the corresponding transmittance section and with the corresponding transmittance section
There is light gap between edge.Light source unit includes that circuit of light sources layer and plural light-emitting component, the plural number light-emitting component are electric respectively
The circuit of light sources layer is connected, and the plural number light-emitting component is respectively corresponded positioned at side where the light incident sides of the plural number light guide sheet,
The plural number light-emitting component respectively provides light towards the corresponding light incident sides, and respectively the light guide sheet guides the light at least partly from it
It is projected through light gap should be gone out towards the corresponding push-button unit in the light emission side face.
Preferably, respectively the light guide sheet is quadrangle, which is U-shaped side wall, which is positioned adjacent to the U
The opening of font side wall.
Preferably, which is arranged in N column, and each column has at least two push-button units, which includes
There are same column interconnecting piece and across column interconnecting pieces, which extends this of connection same row along X-direction and at least two press
The corresponding plural number light guide sheet of key unit is somebody's turn to do across column interconnecting pieces and extends at least key list linked in N column along Y direction
The corresponding light guide sheet of member, the X-direction is vertical with the Y direction, and N is greater than or equal to 2.
Preferably, which is arranged in N column, and each column has at least two light-emitting components, belongs to being somebody's turn to do for same column
At least two light-emitting components are arranged along the X-direction, and the light incident sides of the plural number light guide sheet are arranged also along the X-direction
Column.
Preferably, respectively the light guide sheet is quadrangle, which is U-shaped side wall, which is set to neighbour
The opening of the nearly U-shaped side wall, and it is somebody's turn to do the bottom end that across column interconnecting pieces are positioned adjacent to the U-shaped side wall.
Preferably, which includes same column interconnecting piece and across column interconnecting pieces, which is in array according to ranks
Setting, the plural number light guide sheet of same row are connected to the same side, and the plural number light guide sheet of different lines by the same column interconnecting piece
It is locally connected by across the column interconnecting pieces.
Preferably, the width that should go out light gap is 5mm~10mm.
In one embodiment of the invention, illuminated keyboard includes key mould group and backlight module.Key mould group includes plural key
Unit.Backlight module is set to below the plural number push-button unit, which includes light guide plate, anti-dazzling screen and light source unit.
Light guide plate includes plural light guide sheet and interconnecting piece, which corresponds to plural number push-button unit interval setting and by the company
Socket part locally connects each other, and respectively the light guide sheet has upper surface, light emission side face and light incident sides, and between the adjacent light guide sheet
With light guide sheet gap.Anti-dazzling screen is set to the side of the light guide plate, which includes plural transmittance section, the plural number transmittance section
Respectively correspond plural number light guide sheet setting, and the vertically superposed corresponding transmittance section of the light guide sheet gap portion.Light source unit packet
Layer containing circuit of light sources and plural light-emitting component, the plural number light-emitting component are electrically connected the circuit of light sources layer, the circuit of light sources layer
The other side of the light guide plate is set to relative to the anti-dazzling screen, so that the plural number light-emitting component is respectively corresponded and led positioned at the plural number
The incident side surface side of mating plate, and the plural number light-emitting component respectively provides light, and the respectively light guide sheet towards the corresponding light incident sides
The light is guided at least partly to project from its upper surface towards the corresponding push-button unit.Wherein the plural number push-button unit system arranges
It is arranged at N, each column has at least two push-button units, which includes same column interconnecting piece and across column interconnecting pieces, which connects
Socket part extends corresponding plural number light guide sheet of at least two push-button unit of connection same row along X-direction, should connect across column
Socket part extends the corresponding light guide sheet of at least one push-button unit linked in N column, the X-direction and the Y along Y direction
Axis direction is vertical, and N is greater than or equal to 2.Wherein respectively the light-emitting component has beam angle, which is this being positioned adjacent to
Outside the beam angle of light-emitting component, the energy of the adjacent light guide sheet is transmitted to reduce the light through the interconnecting piece.
Preferably, which is arranged in N column, and each column has at least two light-emitting components, belongs to being somebody's turn to do for same column
At least two light-emitting components are arranged along the X-direction, and the light incident sides of the plural number light guide sheet are arranged also along the X-direction
Column.
Preferably, respectively the light guide sheet is quadrangle, which is U-shaped side wall, which is set to neighbour
The opening of the nearly U-shaped side wall, and it is somebody's turn to do the bottom end that across column interconnecting pieces are positioned adjacent to the U-shaped side wall.
Preferably, which respectively includes keycap, and respectively the keycap has keycap transmittance section, the plural number light guide sheet
In an at least light guide sheet there is aperture, the position of the aperture is corresponding with the keycap transmittance section of the corresponding keycap.
Preferably, the shape of the aperture corresponds to the shape of the keycap transmittance section, so that the aperture is in the vertical throwing of the keycap
Shadow and the keycap transmittance section are least partially overlapped.
Preferably, which respectively includes keycap, and is had between the keycap of the adjacent plural number push-button unit
There is keycap gap, which is less than the light guide sheet gap.
Preferably, there is shading block, which is greater than or equal to the keycap between the adjacent plural number transmittance section
Gap and be less than the light guide sheet gap.
Preferably, plural number light guide sheet and be somebody's turn to do which forms for the unglazed sheet light guide plate cutting for extracting structure
Interconnecting piece.
Preferably, which is curved wall, the adjacent light incident sides in the both ends of the curved wall.
It compares with the prior art, illuminated keyboard of the invention goes out light by the edge of plural light guide sheet, effectively promotion key
The uniformity of luminance of disk.Furthermore illuminated keyboard of the invention locally connects plural light guide sheet by interconnecting piece, and effectively simplification is led
The assembly program of mating plate.
Detailed description of the invention
Fig. 1 is the schematic diagram of the illuminated keyboard of one embodiment of the invention.
Fig. 2A and Fig. 2 B is respectively the schematic cross-section of the illuminated keyboard tangentially A-A and B-B of Fig. 1.
Fig. 3 A and Fig. 3 B are the explosive view and upper schematic diagram of the backlight module of one embodiment of the invention.
Fig. 4 is the schematic diagram of the light guide plate of another embodiment of the present invention.
Fig. 5 is the light guide sheet of the illuminated keyboard of another embodiment of the present invention and the schematic diagram of keycap.
Specific embodiment
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby cooperate embodiment specifically
It is bright as follows.
The present invention provides a kind of illuminated keyboard, especially a kind of illuminated keyboard for going out light using light guide sheet edge.It is specific and
Speech, illuminated keyboard of the invention can be any stand-alone keypad device with luminous button or the light key for being integrated in electronic product
Disk (such as key or keyboard etc. of the outfit such as running gear, tablet computer), but not limited to this.It is with computor-keyboard after
Example, with reference to the details of schema the present invention will be described in detail embodiment illuminated keyboard.
As shown in Figure 1, illuminated keyboard 1 of the invention includes key mould group 10 and backlight module 20, and is carried on the back in an embodiment
Optical mode group 20 is set to 10 lower section of key mould group.Key mould group 10 includes plural push-button unit 100, and plural push-button unit 100
N column are arranged in, each column has at least two push-button units, and wherein N is greater than or equal to 1, and is preferably greater than or equal to 2.Citing and
Speech, in orthogonal X-direction and Y direction, plural push-button unit 100 is arranged in six column along the y axis, and foundation is pressed
Key is of different sizes, and each column have such as 14 to 20 keys along the x axis, and but not limited to this.In other embodiments, plural number is pressed
Key unit 100 can be configured according to practical application in array configuration or in figure.
As shown in Figure 2 A and 2 B, in an embodiment, push-button unit 100 can be movable by scissor support frame 130
Ground connects keycap 120 and bottom plate 110, to support keycap 120 mobile, and then triggers thin film switch 140, and by reply unit
The key that restoring force resets, but not limited to this.Push-button unit 100 can for transparent keycap (such as keycap 120 have keycap
Transmittance section 122) any suitable push-button unit.For example, in other embodiments, scissor support frame 130 can be with other
Elevating mechanism substitution, such as butterfly wing type supporting mechanism, sliding shoe supporting mechanism, cantilevered supporting mechanism etc., and replying unit can
For such as elastomer, spring, magnet etc..Furthermore in another embodiment, push-button unit 100 can reply unit (such as bullet for integration
Spring) in the intracorporal mechanical key unit of key axle housing, and in addition elevating mechanism can not be set.In addition, thin film switch 140 can also replace
It is changed to other switch units, such as mechanical switch, optical switch etc..In other words, the push-button unit 100 of key mould group 10 can have
Any suitable structure, to have the function that generation triggering signal after pressing.Furthermore in this embodiment, the corresponding key of bottom plate 110
Unit 100 has hole 112, is projected with the keycap 120 of light towards the corresponding push-button unit 100 of allowing backlight module 20 to provide.
Furthermore there is keycap gap (such as G1x, G1y) between adjacent keycap 120.Specifically, as shown in Figure 2 A, keycap gap
G1y can be the adjacent outer intermarginal interval of adjacent keycap 120 along the y axis, and as shown in Figure 2 B, keycap clearance G 1x can be phase
The adjacent outer intermarginal interval of adjacent keycap 120 along the x axis.According to practical application, keycap clearance G 1x, G1y can be identical or not
Same size.
As shown in Figure 2 A and 2 B, backlight module 20 includes light guide plate 210, anti-dazzling screen 220 and light source unit 230.It is guide-lighting
Plate 210 includes plural light guide sheet 212 and interconnecting piece (such as 214a, 214b of Fig. 3 A, Fig. 4), the corresponding plural number of plural light guide sheet 212
The interval of push-button unit 100 is arranged and locally connects each other by interconnecting piece, and plural light guide sheet 212 respectively has upper surface 212c, goes out
Light side 212a and light incident sides 212b, and there is light guide sheet gap (such as G2x, G2y) between adjacent light guide sheet 212.It hides
Mating plate 220 is set to the side of light guide plate 212, and anti-dazzling screen 220 includes plural transmittance section 222.Plural transmittance section 222 is right respectively
Plural light guide sheet 212 is answered to be arranged, and each transmittance section 222 has transmittance section edge 222a.The light emission side face 212a of each light guide sheet 212
In corresponding transmittance section 222 have upright projection, the upright projection position in corresponding transmittance section 222 and with corresponding transmittance section
There is light gap (such as G3x, G3y) between 222 transmittance section edge 222a.Light source unit 230 includes circuit of light sources layer 232
And plural light-emitting component 234.Plural light-emitting component 234 is electrically connected circuit of light sources layer 232, and respectively corresponds and lead positioned at plural number
The side of the light incident sides 212b of mating plate 212.In an embodiment, plural light-emitting component 234 is respectively towards corresponding light incident sides 212b
Light is provided, and each light guide sheet 212 guides light at least partly from its light emission side face 212a through going out light gap towards corresponding key
Unit 100 projects.
Furthermore the shading block (such as 224a, 224b) between the transmittance section 222 of anti-dazzling screen 220 is preferably substantially greater than or waits
In keycap gap and it is less than light guide sheet gap.As shown in Figure 2 A, the width G 4y of shading block 224b is slightly larger than keycap clearance G 1y
And it is less than light guide sheet clearance G 2y, and as shown in Figure 2 B, the width G 4x of shading block 224a slightly larger than keycap clearance G 1x and is less than
Light guide sheet clearance G 2x.Specifically, in the X-axis direction, the keycap clearance G 1x between adjacent keycap 120 is preferably less than adjacent leaded light
Light guide sheet clearance G 2x between the neighbouring light emission side face 212a of piece 212, and in the Y-axis direction, between the keycap between adjacent keycap 120
Gap G1y is preferably less than the light guide sheet clearance G 2y between adjacent light guide sheet 212 neighbouring light emission side face 212a and light incident sides 212b.
This embodiment, light emission side surface 212a is preferably partially located in hole 112 in the upright projection of bottom plate 110, so that light can be certainly
Light emission side surface 212a, via light clearance G 3x, G3y out, (i.e. transmittance section 222 corresponds to the portion Chong Die with light guide sheet clearance G 2x, G2y
Point), then projected by the hole 112 of bottom plate 110 towards keycap 120, but not limited to this.
As shown in Fig. 3 A and Fig. 3 B, in an embodiment, corresponding 120 shape of keycap of each light guide sheet 212 is essentially quadrangle,
Light emission side face 212a is U-shaped side wall, and interconnecting piece (such as 214a) is advantageously provided in the opening of neighbouring U-shaped side wall.In
This embodiment, light incident sides 212b are preferably the side wall for connecting U-shaped sidewall opening end.Specifically, upper surface 212c is four
The quadrangular surface that paralleled by X axis and Y-axis plane extend in side shape light guide sheet 212, light incident sides 212b are quadrangle light guide sheet 212
One of side side surface, and light emission side face 212a is then the side surface of its excess-three side of quadrangle light guide sheet 212.
For example, light incident sides 212b connects upper surface 212c along X-axis and extends downwardly along Z axis, and is quadrangle light guide sheet 212
The surface XZ that paralleled by X axis and Z axis extend.Light emission side face 212a includes one and connects upper surface 212c and along Z axis to downward along X-axis
It the surface XZ stretched and positioned at two lateral edge Y-axis of the surface XZ connects upper surface 212c and is constituted along the surface YZ that Z axis extends downwardly
Continuous surface, but not limited to this.
The corresponding push-button unit 100 of plural light guide sheet 212 is arranged according to ranks in array spacings, so that adjacent light guide sheet
There is light guide sheet gap (such as G2x, G2y) between 212, and keycap gap (such as G1x, G1y) is preferably less than light guide sheet gap.
Specifically, the width of light guide sheet clearance G 2x can be the adjacent outer intermarginal distance of adjacent light guide sheet 212 along the x axis, such as
Distance between the light emission side face 212a of adjacent light guide sheet 212, and light guide sheet clearance G 2x preferably have along the y axis it is consistent big
Small, but not limited to this.The width of light guide sheet clearance G 2y can for adjacent light guide sheet 212 along the y axis it is adjacent it is outer it is intermarginal away from
From, for example, light guide sheet 212 light emission side face 212a U-shaped side wall bottom end and adjacent column adjacent light guide sheet 212 incident side
The distance of face 212b, and light guide sheet clearance G 2y preferably has consistent size along the x axis, but not limited to this.According to practical
Using, the light guide sheet clearance G 2x of X-direction can have with the ruler identical or different in the light guide sheet clearance G 2y of Y direction
It is very little.
In other embodiments, according to different keycap shapes, light guide sheet 212 can have different shapes.As shown in figure 4,
In another embodiment, light guide sheet 210 ' includes plural light guide sheet 212 '.Light guide sheet 212 ' can be arc-like sheet, wherein light emission side face
212a is curved wall, and the both ends of curved wall preferably abut light incident sides 212b.Specifically, light guide sheet 212 ' can be tool
There is similar semi-moon shaped sheet body, wherein light emission side face 212a is the side surface of the curved side of semilune light guide sheet 212 ', makes to obtain
Light side 212a is arc light emission side face, and light incident sides 212b is the side surface for connecting the straight sides at curved side both ends.Furthermore
In this embodiment, light guide sheet clearance G 2x can have cumulative size according to curved wall along the y axis, and light guide sheet gap
G2y has the change in size to rise and fall according to curved wall along the x axis, and but not limited to this.
Furthermore as shown in Figure 3A, plural light guide sheet 212 locally connects each other by interconnecting piece, so that plural light guide sheet 212
Structure with one, while essence between the light guide sheet 212 for making the light emission side face 212a of individual light guide sheets 212 adjacent thereto again
Possess light guide sheet clearance G 2x, G2y.Interconnecting piece preferably includes same column interconnecting piece 214a and across column interconnecting piece 214b.Same column interconnecting piece
214a preferably extends the correspondence light guide sheet 212 of at least two push-button units 100 of connection same row along X-direction.Yu Yishi
Example is applied, the plural light guide sheet 212 of same row is preferably connected to the same side by same column interconnecting piece 214a, and the plural number of different lines is led
Mating plate 212 is locally connected by across column interconnecting piece 214b.In this embodiment, same column interconnecting piece 214a is advantageously provided in neighbouring U-shaped
The opening of shape side wall, and the bottom end far from U-shaped side wall.Specifically, same column interconnecting piece 214a is preferably connected to side by side
Between the adjacent end of the light incident sides 212b of adjacent light guide sheet 212, so that the light emission side of the plural light guide sheet 212 of same row
Face 212a is substantially independent of one another, and light incident sides 212b is connected with each other along such as X-direction, and but not limited to this.According to practical
Using same column interconnecting piece 214a can be locally connected between the light emission side face 212a of the adjacent light guide sheet 212 of same row, so that same
The light emission side face 212a and light incident sides 212b of the plural light guide sheet 212 of column are substantially independent of one another.As shown in figure 4, in another reality
Example is applied, same column interconnecting piece 214a is positioned adjacent between the curved wall (i.e. light emission side face 212a) of light incident sides 212b.
Across column interconnecting piece 214b are preferably led along the correspondence that Y direction extends at least push-button unit 100 in connection N column
Mating plate 212.As shown in Figure 3A, in an embodiment, across column interconnecting piece 214b are positioned adjacent to the bottom end of U-shaped side wall.Specifically
For, across column interconnecting piece 214b can extend from the bottom end of the U-shaped side wall of the light guide sheet 212 of wherein one column towards adjacent column, into
And connect adjacent column neighbouring light guide sheet 212 (such as adjacent to end of light incident sides 212b) or corresponding same column interconnecting piece
214a, but not limited to this.As shown in figure 4, across column interconnecting piece 214b can be from the light guide sheet of wherein one column in another embodiment
212 same column interconnecting piece 214a extends towards adjacent column, and then connects the neighbouring light guide sheet 212 or its same column interconnecting piece of adjacent column
214a, but not limited to this.
Herein it may be noted that interconnecting piece (such as same column interconnecting piece 214a, across column interconnecting piece 214b) is advantageously provided in respectively leading
The light emission side face 212a of mating plate 212 influences lesser position, in favor of promoting light-out effect, and reduces light and passes through interconnecting piece
A possibility that being delivered to adjacent light guide sheet.For example, interconnecting piece (such as same column interconnecting piece 214a, across column interconnecting piece 214b) in
The upright projection of anti-dazzling screen 220 is preferably substantially in the outside of transmittance section 222, that is, interconnecting piece is preferably most of by anti-dazzling screen 220
Lightproof part covered.
As shown in Figure 3A, anti-dazzling screen 220 is set to the side of light guide plate 210, such as (i.e. adjacent to the side of key mould group 10
Upside).Anti-dazzling screen 220 has light-shielding pattern 220a, stops light with selective local or light is allowed to pass through.In an embodiment,
Anti-dazzling screen 220 is the optical diaphragm (such as terephthalate (Polyethylene Terephthalate, PET)) of light-permeable
And there is design on diaphragm, the part of light is not needed to cover corresponding illuminated keyboard 1.Specifically, anti-dazzling screen 220
There can be the pattern of plural number push-button unit 100 relative position and profile of corresponding key mould group 10, so that adjacent key unit 100
Between gap (such as keycap clearance G 1x, G1y) masked the position for light not being allowed to pass through, and corresponding to plural push-button unit 100
It is set to transmittance section 222, light is may be allowed and passes through so that light can be projected from the keycap transmittance section 122 of keycap 120.Implement in one
Example, each transmittance section 222 preferably have the shape and size of corresponding keycap 120, and transmittance section edge 222a be each transmittance section 222 with
The boundary of the lightproof part of anti-dazzling screen 220.Specifically, between adjacent plural transmittance section 222 have shading block (such as
224a, 224b), edge 222a in transmittance section is the boundary of each transmittance section 222 and adjacent shading block.For example, shading block
Distance of the width G 4x of 224a between adjacent transmittance section 222 along the x axis adjacent transmittance section edge 222a, and shading block
Distance of the width G 4y of 224b between the adjacent transmittance section edge 222a of adjacent transmittance section 222 along the y axis.
It is arranged specifically, plural transmittance section 222 respectively corresponds plural light guide sheet 212, and light guide sheet clearance G 2x, G2y portion
Divide vertically superposed corresponding transmittance section 222.As shown in Figure 3B, in the X-axis direction, the shading block between adjacent transmittance section 222
The width G 4x of 224a is preferably less than the light guide sheet clearance G 2x between the neighbouring light emission side face 212a of adjacent light guide sheet 212, so that leading
The vertically superposed corresponding transmittance section 222 in the part mating plate clearance G 2x, and the light emission side face 212a of light guide sheet 212 is in corresponding light transmission
The upright projection in portion 222, position is in corresponding transmittance section 222 and between the transmittance section edge 222a of corresponding transmittance section 222
With light clearance G 3x out.Also that is, light guide sheet clearance G 2x goes out light clearance G 3x with corresponding 222 vertical overlapping portion of transmittance section.?
In Y direction, the width G 4y of the shading block 224b between adjacent transmittance section 222 is preferably less than the light emission side of adjacent light guide sheet 212
Light guide sheet clearance G 2y between face 212a and neighbouring light incident sides 212b, so that the part light guide sheet clearance G 2y is vertically superposed corresponding
Transmittance section 222, and the light emission side face 212a of light guide sheet 212, in the upright projection of corresponding transmittance section 222, position is in corresponding light transmission
There is light clearance G 3y in portion 222 and between the transmittance section edge 222a of corresponding transmittance section 222.Also that is, light guide sheet gap
G2y is light clearance G 3y with corresponding 222 vertical overlapping portion of transmittance section.In an embodiment, the width of light clearance G 3x, G3y out
Preferably 5mm~10mm, so that the light for deriving from light emission side face 212a injection can be largely in light interstice coverage out from light transmission
Portion 222 passes through, and then projects towards corresponding push-button unit 100.Herein it may be noted that the width of light clearance G 3x, G3y can be the bottom of according to out
The hole 112 of plate 110 and 122 change in location of transmittance section of keycap 120, therefore be smaller than 5mm or be greater than 10mm, not with embodiment
It is shown to be limited.Furthermore according to practical application, the light clearance G 3x out of X-direction and the light clearance G 3y out of Y direction can have phase
Same or different size.In addition, light clearance G 3x, G3y is preferably arranged around the light emission side surface 212a of light guide sheet 212 out, such as
The light emission side face 212a of corresponding U-shaped side wall, it is empty around the light out of U-shaped side wall preferably to constitute essence for light clearance G 3x, G3y out
Between, but not limited to this.According to practical application, light emission side face 212a in anti-dazzling screen 220 upright projection preferably at least with it is corresponding
Shading block 224a and one of shading block 224b be not overlapped, and make light guide sheet 212 in X-direction and Y direction
At least one party be upwardly formed out light clearance G 3x or out light clearance G 3y or have light clearance G 3x and G3y out simultaneously.
As shown in Fig. 3 A and Fig. 3 B, circuit of light sources layer 232 is set to the other side of light guide plate 210 relative to anti-dazzling screen 220
The light incident sides 212b of (such as downside), the corresponding light guide sheet 212 of plural light-emitting component 234 is set to circuit of light sources with array manner
Layer 232.Specifically, plural light-emitting component 234 is arranged in N column, each column has at least two light-emitting components, belongs to same column extremely
Few two light-emitting components 234 are arranged along X-direction, and the light incident sides 212b of plural light guide sheet 212 is arranged also along X-direction
Column.Light-emitting component 234 is preferably light emitting diode (LED), especially the preferably luminous light emitting diode in side, but not as
Limit.The light-emitting surface of light-emitting component 234 preferably faces the light incident sides 212b of light guide sheet 212, so that light passes through light incident sides
212b and be transferred in light guide sheet 212, and then from light emission side face 212a project.Each light-emitting component 234 has beam angle θ, connection
Portion (such as same column interconnecting piece 214a) is preferably outside the beam angle θ for the light-emitting component 234 being positioned adjacent to, to reduce light transmission
Interconnecting piece is transmitted to the energy of adjacent light guide sheet 212；So when two neighboring light-emitting component 234 issues different colours light
When, light mixing situation can occur through interconnecting piece 214a or interconnecting piece 214b to avoid two neighboring light guide sheet 212, it is ensured that adjacent
Two light guide sheets 212 all can only issue predetermined color light.
In above-described embodiment, illuminated keyboard 1 of the invention goes out light, light guide sheet using the light emission side face 212a of light guide sheet 212
212, which can be not required to setting light, extracts structure (light extraction structure), such as: microlens structure (micro-
) or printing net-point lens.In other words, the light guide plate 210 of above-described embodiment can be for no microlens structure or the sheet without site is led
Tabula rasa forms plural light guide sheet 212 (or 212 ') and interconnecting piece (such as 214a, 214b) after being cut, but not as
Limit.In another embodiment, light guide sheet 212 also settable site or microlens structure, and make plural light-emitting component 234 respectively towards right
The light incident sides answered mention 212b for light, and each light guide sheet 212 guides light at least partly from its upper surface 212c towards corresponding
Push-button unit 100 projects.In other words, it is guide-lighting also can to form plural number for the sheet light guide plate cutting with site for light guide plate 210
Piece 212 (or 212 ') and interconnecting piece (such as 214a, 214b), and light can be gone out by upper surface 212c and light emission side face 212a, into
One step promotes light-out effect.
Furthermore the position and shape in response to the keycap transmittance section 122 of keycap 120 are different, and corresponding light guide sheet 212 can have office
The design of portion's reinforcement light emission luminance.As shown in figure 5, keycap 120a, keycap 120b are respectively provided with keycap transmittance section in embodiment
122a, keycap transmittance section 122b, such as " shift " and " Z " character, and at least light guide sheet 242a in plural light guide sheet with lead
Mating plate 242b preferably has aperture 244a, aperture 244b, aperture 244a, aperture 244b position preferably with corresponding keycap
120a, keycap transmittance section 122a, the keycap transmittance section 122b of keycap 120b are corresponding.Furthermore the shape of aperture 244a, aperture 244b
The shape for preferably corresponding to keycap transmittance section 122a, the keycap transmittance section distributed areas 122b, so that aperture 244a, aperture 244b are in key
Cap 120a, the upright projection essence of keycap 120b are least partially overlapped with keycap transmittance section 122a, keycap transmittance section 122b.
Specifically, the keycap transmittance section 122a of keycap 120a is more " shift " character of character, keycap transmittance section
The distributed areas 122a are the shorter rectangle in the longer front and back in left and right, therefore correspond to the aperture 244a of the light guide sheet 242a of keycap 120a
With regard to the corresponding rectangle for being designed to that the longer front and back in left and right is shorter, so that rectangular aperture 244a and " shift " character are at least
Part is vertically superposed, and light can be gone out from the light emission side face 246a of light guide sheet 242a by making light not only, and light can be more gone out from aperture 244a,
With the light emission luminance of reinforcement " shift " character.Similarly, the keycap transmittance section 122b of keycap 120b is less " Z " word of character
Symbol, therefore the light guide sheet 242b of corresponding keycap 120b can offer for example circular aperture 244b, so that circular aperture
244b and " Z " character are at least partly vertically superposed, and light is made not only can to go out light from the light emission side face 246b of light guide sheet 242b, more
Light can be gone out from aperture 244b, with the light emission luminance of reinforcement " Z " character.Herein it may be noted that according to practical application, the aperture of light guide sheet
Position, shape, size can be according to the character changes that keycap is presented, to reach local strengthening light emission luminance, and then reach whole
The promotion of uniformity of luminance.
Compared to known techniques, illuminated keyboard of the invention is not promoted merely with individual light guide sheets cooperation light-emitting component and is shone
Uniformity is more greater than the design of the shading block between the transmittance section of anti-dazzling screen by the guide-lighting gap between light guide sheet, a to utilize
The edge of other light guide sheet goes out light, and makes light guide plate no setting is required site, reduces cost.Furthermore illuminated keyboard of the invention utilizes
Interconnecting piece locally connects plural light guide sheet, not only makes to possess light guide sheet gap between light guide sheet and goes out light to reach edge, more makes multiple
There is number light guide sheet the structure of one to be easy assembling.
The present invention is described by above-mentioned related embodiment, however above-described embodiment is only to implement example of the invention.
It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from spirit of the invention and
It is changed and retouched made by range, belongs to scope of patent protection of the invention.
Claims (14)
1. a kind of illuminated keyboard, characterized by comprising:
Key mould group includes plural push-button unit；And
Backlight module is set to below the key mould group, which includes:
Light guide plate, comprising interconnecting piece and plural light guide sheet, the plural number light guide sheet correspond to the plural number push-button unit interval be arranged and by
Locally connected each other by the interconnecting piece, which respectively has light emission side face and a light incident sides, and adjacent light guide sheet it
Between have light guide sheet gap；
Anti-dazzling screen is set to the side of the light guide plate, which includes plural transmittance section, which respectively corresponds this
Plural light guide sheet setting, respectively the transmittance section has transmittance section edge, and respectively the light emission side face of the light guide sheet is in the corresponding light transmission
Portion has upright projection, the transmittance section edge of the upright projection position in the corresponding transmittance section and with the corresponding transmittance section
Between have light gap；And
Light source unit is electrically connected the circuit of light sources comprising circuit of light sources layer and plural light-emitting component, the plural number light-emitting component
Layer, and the plural number light-emitting component is respectively corresponded positioned at side, the plural number light-emitting component where the light incident sides of the plural number light guide sheet
Light respectively is provided towards the corresponding light incident sides, and respectively the light guide sheet guides the light at least partly from its light emission side face through being somebody's turn to do
Light gap is projected towards the corresponding push-button unit out.
2. illuminated keyboard as described in claim 1, which is characterized in that respectively the light guide sheet is quadrangle, which is U-shaped
Shape side wall, the interconnecting piece are positioned adjacent to the opening of the U-shaped side wall.
3. illuminated keyboard as described in claim 1, which is characterized in that the plural number push-button unit is arranged in N column, and each column has extremely
Few two push-button units, which includes same column interconnecting piece and across column interconnecting pieces, which prolongs along X-direction
Corresponding plural number light guide sheet of at least two push-button unit of connection same row is stretched, across column interconnecting pieces is somebody's turn to do and prolongs along Y direction
The corresponding light guide sheet of an at least push-button unit linked in N column is stretched, the X-direction is vertical with the Y direction, and N is greater than
Or it is equal to 2.
4. illuminated keyboard as described in claim 1, which is characterized in that the interconnecting piece includes same column interconnecting piece and connects across column
Portion, the plural number light guide sheet are arranged according to ranks in array, and the plural number light guide sheet of same row is connected to by the same column interconnecting piece
The same side, and the plural number light guide sheet of different lines is locally connected by across the column interconnecting pieces.
5. illuminated keyboard as described in claim 1, which is characterized in that the width that should go out light gap is 5mm~10mm.
6. a kind of illuminated keyboard, characterized by comprising:
Key mould group includes plural push-button unit；And
Backlight module is set to below the plural number push-button unit, which includes:
Light guide plate, comprising interconnecting piece and plural light guide sheet, the plural number light guide sheet correspond to the plural number push-button unit interval be arranged and by
It is locally connected each other by the interconnecting piece, respectively the light guide sheet has upper surface, light emission side face and light incident sides, and the adjacent leaded light
There is light guide sheet gap between piece；
Anti-dazzling screen is set to the side of the light guide plate, which includes plural transmittance section, which respectively corresponds this
Plural light guide sheet setting, and the vertically superposed corresponding transmittance section of the light guide sheet gap portion；And
Light source unit is electrically connected the circuit of light sources comprising circuit of light sources layer and plural light-emitting component, the plural number light-emitting component
Layer, the circuit of light sources layer are set to the other side of the light guide plate relative to the anti-dazzling screen, so that the plural number light-emitting component is distinguished
Corresponding incident side surface side for being located at the plural number light guide sheet, and the plural number light-emitting component respectively provides light towards the corresponding light incident sides
Line, and respectively the light guide sheet guides the light and at least partly projects from its upper surface towards the corresponding push-button unit；
Wherein the plural number push-button unit system is arranged in N column, and each column has at least two push-button units, which includes same column
Interconnecting piece and across column interconnecting pieces, the same column interconnecting piece extend at least two push-button unit of connection same row along X-direction
The corresponding plural number light guide sheet is somebody's turn to do across column interconnecting pieces and extends at least one push-button unit pair linked in N column along Y direction
The light guide sheet answered, the X-direction is vertical with the Y direction, and N is greater than or equal to 2；
Wherein respectively the light-emitting component has beam angle, which is outside the beam angle for the light-emitting component being positioned adjacent to,
The energy of the adjacent light guide sheet is transmitted to reduce the light through the interconnecting piece.
7. the illuminated keyboard as described in claim 3 or 6, which is characterized in that the plural number light-emitting component is arranged in N column, each column tool
There are at least two light-emitting components, at least two light-emitting component for belonging to same column is arranged along the X-direction, the plural number light guide sheet
The light incident sides arranged also along the X-direction, the columns N which is arranged is more than or equal to 2.
8. illuminated keyboard as claimed in claim 6, which is characterized in that respectively the light guide sheet is quadrangle, which is U-shaped
Shape side wall, which is positioned adjacent to the opening of the U-shaped side wall, and is somebody's turn to do across column interconnecting pieces and is positioned adjacent to the U
The bottom end of font side wall.
9. illuminated keyboard as described in claim 1 or 6, which is characterized in that the plural number push-button unit respectively includes keycap, and respectively should
Keycap has keycap transmittance section, at least light guide sheet in the plural number light guide sheet with aperture, the position of the aperture with it is corresponding
The keycap transmittance section of the keycap is corresponding.
10. illuminated keyboard as claimed in claim 9, which is characterized in that the shape of the aperture corresponds to the shape of the keycap transmittance section
Shape, so that the aperture is least partially overlapped in the upright projection of the keycap and the keycap transmittance section.
11. illuminated keyboard as described in claim 1 or 6, which is characterized in that the plural number push-button unit respectively includes keycap, and phase
There is keycap gap, which is less than the light guide sheet gap between the keycap of the adjacent plural number push-button unit.
12. illuminated keyboard as claimed in claim 11, which is characterized in that have shading region between the adjacent plural number transmittance section
Block, the shading block are greater than or equal to the keycap gap and are less than the light guide sheet gap.
13. illuminated keyboard as described in claim 1 or 6, which is characterized in that the light guide plate is that the sheet of unglazed extraction structure is led
Plural number light guide sheet and the interconnecting piece of tabula rasa cutting and formation.
14. illuminated keyboard as described in claim 1 or 6, which is characterized in that the light emission side face is curved wall, the curved side
The adjacent light incident sides in the both ends of wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810498520.8A CN108447724B (en) | 2018-05-23 | 2018-05-23 | Illuminated keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810498520.8A CN108447724B (en) | 2018-05-23 | 2018-05-23 | Illuminated keyboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108447724A CN108447724A (en) | 2018-08-24 |
| CN108447724B true CN108447724B (en) | 2019-08-27 |
Family
ID=63204623
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810498520.8A Active CN108447724B (en) | 2018-05-23 | 2018-05-23 | Illuminated keyboard |
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| Country | Link |
|---|---|
| CN (1) | CN108447724B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI697021B (en) * | 2019-09-12 | 2020-06-21 | 群光電能科技股份有限公司 | Illuminated keyboard and backlight module thereof |
| TWI749736B (en) * | 2020-07-31 | 2021-12-11 | 致伸科技股份有限公司 | Multi-zone backlight keyboard and backlight module thereof |
| US20230143245A1 (en) * | 2021-11-05 | 2023-05-11 | Darfon Electronics Corp. | Luminous keyboard and optical module thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384689A (en) * | 2016-10-28 | 2017-02-08 | 苏州达方电子有限公司 | Light emitting keyboard |
| CN106710929A (en) * | 2017-01-19 | 2017-05-24 | 苏州达方电子有限公司 | Illuminating keyboard and illuminating keypads thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160103272A1 (en) * | 2014-10-14 | 2016-04-14 | Szu-Wei Sun | Backlight Assembly with Brightness Enhancing Structure |
-
2018
- 2018-05-23 CN CN201810498520.8A patent/CN108447724B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384689A (en) * | 2016-10-28 | 2017-02-08 | 苏州达方电子有限公司 | Light emitting keyboard |
| CN106710929A (en) * | 2017-01-19 | 2017-05-24 | 苏州达方电子有限公司 | Illuminating keyboard and illuminating keypads thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108447724A (en) | 2018-08-24 |
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