CN106851926B - A kind of backlight keyboard - Google Patents
A kind of backlight keyboard Download PDFInfo
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- CN106851926B CN106851926B CN201710240411.1A CN201710240411A CN106851926B CN 106851926 B CN106851926 B CN 106851926B CN 201710240411 A CN201710240411 A CN 201710240411A CN 106851926 B CN106851926 B CN 106851926B
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- led
- key
- backlight
- matrix
- diode
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- 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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- Input From Keyboards Or The Like (AREA)
Abstract
The embodiment of the invention discloses a kind of backlight keyboards, are related to keyboard field of luminescent technology, for solving the problem of that LED matrix design does not consider that the conducting voltage difference of LED influences the display effect of some backlight modes in existing backlight keyboard.Backlight keyboard includes: key-press matrix, Light-emitting diode LED matrix and keyboard controller, LED in LED matrix is arranged to carry out back lighting to the key in key-press matrix, keyboard controller is used to detect the pressing operation of key in key-press matrix, and the interface group by including multiple lamp control interfaces controls shining for LED in LED matrix；LED matrix includes the first LED and the 2nd LED, and the first conducting voltage of the first LED is higher than the second conducting voltage of the 2nd LED, and the first electrode of the 2nd LED is connected by target diode group with the first lamp control interface of interface group.
Description
Technical field
The present invention relates to keyboard field of luminescent technology more particularly to a kind of backlight keyboards.
Background technique
Most users not only focus on its function when selecting electronic product, also pay close attention to its fashion and interest, especially table
Now to the pursuit of color.Therefore Unicolor back light keyboard can no longer meet consumer demand, and with colored backlight and
The keyboard of a variety of backlight modes is gradually by consumers.
The backlight of keyboard usually uses Light-emitting diode LED matrix to realize, when the voltage for being added in two interpolar of LED is super
Cross conducting voltage VfWhen, LED electroluminescent, the luminescent color of LED is often different due to the difference of LED material.Colored backlight key
Disk needs to be arranged simultaneously in the LED matrix of keyboard the LED of manifold color-emitting, and the prior art is in Unicolor back light keyboard LED square
On the basis of battle array, the LED of manifold color-emitting is installed in a matrix, to realize the colored backlight of keyboard.
Due to the LED that luminescent color differs greatly, conducting voltage VfOften difference is also very big, colored backlight keyboard
The conducting voltage of common LED generally includes differ greatly two conducting voltages in LED matrix, and in some backlight modes
In, it needs to control both LED simultaneously.But there is no the conducting voltage difference for considering LED, shadows for existing LED matrix design
The display effect of some backlight modes is rung, for example, will appear unrelated key-press backlight Weak-luminescence in single-button backlight
Phenomenon constrains backlight keyboard in raising aesthetically.
Summary of the invention
The embodiment of the invention provides a kind of backlight keyboards, do not examine for solving LED matrix design in existing backlight keyboard
Consider the conducting voltage difference of LED, the problem of influencing the display effect of some backlight modes.
In order to achieve the above objectives, the one side of the embodiment of the present invention provides a kind of backlight keyboard, comprising: key-press matrix,
Light-emitting diode LED matrix and keyboard controller, the LED in the LED matrix are arranged to in the key-press matrix
Key carries out back lighting, and the keyboard controller is used to detect the pressing operation of key in the key-press matrix, and passes through packet
The interface group for including multiple lamp control interfaces controls shining for LED in the LED matrix；
The LED matrix includes the first LED and the 2nd LED, and the first conducting voltage of the first LED is higher than described second
The second conducting voltage of LED, the first electrode of the 2nd LED pass through the first lamp control of target diode group and the interface group
Interface is connected.
With reference to first aspect, in the first possible implementation of the first aspect, the target diode group includes
The first diode of reverse parallel connection and the second diode.
The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect
In, the conducting voltage of the first diode is higher than the conducting voltage of second diode.
The possible implementation of second with reference to first aspect, in the third possible implementation of first aspect
In, the first electrode is cathode, and the second electrode is anode.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect
In, the anode of the first diode is connected with the cathode of the 2nd LED.
With reference to first aspect, the possible implementation of the first of first aspect, first aspect second of possible reality
It is any one in 4th kind of possible implementation of existing mode, the third possible implementation of first aspect and first aspect
The possible implementation of kind, in the fifth possible implementation of the first aspect, the backlight keyboard further include auxiliary electricity
Road, the auxiliary circuit include DC power supply, first resistor and Voltage stabilizing module, and the first resistor passes through first node and institute
It states Voltage stabilizing module to be connected, the voltage stabilization of the first node；
The first node of the auxiliary circuit is connected by second resistance with the lamp control interface of the interface group.
The 5th kind of possible implementation with reference to first aspect, in the 6th kind of possible implementation of first aspect
In, the Voltage stabilizing module includes third diode.
The 6th kind of possible implementation with reference to first aspect, in the 7th kind of possible implementation of first aspect
In, the anode of the third diode is connected by the first resistor with the anode of the DC power supply, the three or two pole
The cathode of pipe is grounded.
With reference to first aspect, the possible implementation of the first of first aspect, first aspect second of possible reality
Now the 4th kind of possible implementation, first aspect of mode, the third possible implementation of first aspect, first aspect
The 5th kind of possible implementation, first aspect the 6th kind of possible implementation and the 7th kind of first aspect it is possible
The possible implementation of any one in implementation, in the 8th kind of possible implementation of first aspect, the keyboard
Controller includes key master control and backlight control module；
The key master control is used to detect the pressing operation of key in the key-press matrix, and to the backlight control module
Send control instruction；
The backlight control module is used to execute the control instruction that the key master control is sent, by including that multiple lamp controls connect
Mouthful interface group control shining for LED in the LED matrix.
With reference to first aspect, the possible implementation of the first of first aspect, first aspect second of possible reality
Now the 4th kind of possible implementation, first aspect of mode, the third possible implementation of first aspect, first aspect
The 5th kind of possible implementation, the 6th kind of possible implementation of first aspect, the 7th kind of first aspect it is possible
Any one possible implementation in implementation and the 8th kind of possible implementation of first aspect, in first aspect
In 9th kind of possible implementation, the keyboard controller, the pressing behaviour of the first key in detecting the key-press matrix
When making, the LED for corresponding to first key in the LED matrix is opened, and close and correspond to described the in the LED matrix
The LED of other keys other than one key.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
Backlight keyboard provided by the invention, it is contemplated that the conducting voltage difference of difference LED in LED matrix, by conducting voltage
Lower LED is connected to lamp control interface by target diode group, can reduce lamp control interface and be added in the lower LED of conducting voltage
The voltage of two interpolars improves the display effect of backlight mode.
Detailed description of the invention
Fig. 1 is backlight keyboard one embodiment schematic diagram of the present invention；
Fig. 2 is another embodiment schematic diagram of backlight keyboard of the present invention；
Fig. 3 is that LED matrix is connected to interface group one embodiment schematic diagram in backlight keyboard of the present invention；
Fig. 4 is that LED matrix is connected to another embodiment schematic diagram of interface group in backlight keyboard of the present invention；
Fig. 5 is method for recording one embodiment schematic diagram of backlight mode of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of backlight keyboards, for improving the display effect of backlight mode.
In order to make those skilled in the art better understand the present invention program, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention are purged, completely describe, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Description and claims of this specification and term " first ", " second ", " third ", " in above-mentioned attached drawing
Four ", the (if present)s such as " 5th " are to be used to distinguish similar objects, without for describing specific sequence or successive time
Sequence.It should be understood that the data used in this way are interchangeable under appropriate circumstances, so as to the embodiments described herein can in addition to
Sequence other than the content for illustrating or describing herein is implemented.In addition, term " includes " and " having " and their any change
Shape, it is intended that cover it is non-exclusive include, for example, containing the process, method of a series of steps or units, system, product
Or equipment those of is not necessarily limited to clearly to list step or unit, but may include do not list clearly or for these
Other intrinsic step or units of process, method, product or equipment.
The luminous of LED is determined by the size for being added in the voltage difference at the two poles of the earth, only when the voltage difference between positive electrode and negative electrode
When more than its conducting voltage, which can just shine.LED currently on the market, which has, distinguishes high break-over voltage and low conducting voltage, high
The LED of conducting voltage is mainly include the following types: blue, white, cyan, aubergine, hyacinthine etc.；The LED master of low conducting voltage
Have: red, orange, yellow, green etc..The conducting voltage of common LED generally includes in the LED matrix of colored backlight keyboard
Two conducting voltages to differ greatly, and in some backlight modes, it needs to control both LED simultaneously.Keyboard controller is logical
The luminous or closing that LED in LED matrix is often controlled by the level of different lamp control interfaces output, when the input of LED anode is high electric
When flat " 1 ", cathode input low level " 0 ", LED will usually shine, and input when the equal input high level in the two poles of the earth LED or low electricity
It is flat, or when positive input low level " 0 ", cathode input high level " 1 ", LED just will not shine.Assuming that low conducting voltage is
1.4V, high break-over voltage 3.7V could be controlled then the voltage difference between high level " 1 " and low level " 0 " needs to be greater than 3.7V
The LED of high break-over voltage processed shines.LED and low conducting voltage but in some light-emitting modes, such as in high break-over voltage
LED shine after, need to close the LED of low conducting voltage, since the voltage difference of its two interpolar is decreased below from 3.7V
1.4V has certain time-delay, and the LED of low conducting voltage still will appear Weak-luminescence, and the corresponding speed of closing is low, affects backlight
The display effect of mode.
Referring to FIG. 1, being one embodiment schematic diagram of backlight keyboard of the present invention, the backlight keyboard of the embodiment of the present invention can
To include: key-press matrix 5, Light-emitting diode LED matrix 2 and keyboard controller 4, the LED in LED matrix 2 is arranged to pair
Key in key-press matrix 5 carries out back lighting, and keyboard controller 4 is used to detect the pressing operation of key in key-press matrix 5, and
By include multiple lamp control interfaces interface group 1 control LED matrix 2 in LED shine, specifically, can by control it is multiple
LED's shines in the level control LED matrix 2 of lamp control interface output.
LED matrix 2 includes the first LED201 and the 2nd LED202, and the first conducting voltage of the first LED201 is higher than second
The two poles of the earth of the second conducting voltage of LED202, the first LED201 can directly be connected with the lamp control interface of interface group 1, and second
The first electrode of LED202 is connected by target diode group 3 with the first lamp control interface 101 of interface group 1, the 2nd LED202's
Second electrode can directly be connected with the second lamp control interface 102 of interface group 1.First LED may include one or more LED,
2nd LED also may include one or more LED, and specific number is without limitation.
Backlight keyboard provided by the invention, it is contemplated that the conducting voltage difference of difference LED in LED matrix, by conducting voltage
Lower LED is connected to lamp control interface by target diode group, can reduce lamp control interface and be added in the lower LED of conducting voltage
The voltage of two interpolars improves the display effect of backlight mode.
Referring to FIG. 2, being another embodiment schematic diagram of backlight keyboard of the present invention, the backlight keyboard of the embodiment of the present invention
It may include: key-press matrix 5, Light-emitting diode LED matrix 2 and keyboard controller 4, the LED in LED matrix 2 is arranged to
Back lighting is carried out to the key in key-press matrix 5, keyboard controller 4 includes key master control 401 and backlight control module 402,
Key master control 401 is used to detect the pressing operation of key in key-press matrix 5, and sends control instruction to backlight control module 402；
Backlight control module 402 is used to execute the control instruction of the transmission of key master control 401, passes through the interface group including multiple lamp control interfaces
LED's shines in 1 control LED matrix 2.
LED matrix 2 includes the first LED201 and the 2nd LED202, and the first conducting voltage of the first LED201 is higher than second
The two poles of the earth of the second conducting voltage of LED202, the first LED201 can directly be connected with the lamp control interface of interface group 1, and second
The first electrode of LED202 is connected by target diode group 3 with the first lamp control interface 101 of interface group 1, the 2nd LED202's
Second electrode can directly be connected with the second lamp control interface 102 of interface group 1.
Preferably, first electrode can be cathode, and second electrode can be anode, and target diode group includes reverse parallel connection
First diode and the second diode, the conducting voltage of first diode be higher than the conducting voltage of the second diode, the one or two
The anode of pole pipe is connected with the cathode of the 2nd LED.Referring to FIG. 3, being connected to interface for LED matrix 2 in backlight keyboard of the present invention
One embodiment schematic diagram of group 1.In Fig. 3, as an example, LED matrix 2 include 6 LED, the first LED201 include LED3 and
LED4, the 2nd LED202 include LED1, LED2, LED5 and LED6, and interface group 1 includes three lamp control interfaces, lamp control interface 1, lamp
Control interface 2 and lamp control interface 3, target diode group 3 may include reverse parallel connection first diode (D1 and D3 in Fig. 3) and
The conducting voltage of second diode (D2 and D4 in Fig. 3), first diode (D1 and D3 in Fig. 3) can be higher than the two or two pole
Manage the conducting voltage of (D2 and D4 in Fig. 3).
In order to keep 1 output voltage of interface group more stable, it is preferred that backlight keyboard further includes auxiliary circuit, auxiliary circuit
Including DC power supply, first resistor and Voltage stabilizing module, first resistor is connected by first node with Voltage stabilizing module, first node
Voltage stabilization；The first node of auxiliary circuit is connected by second resistance with the lamp control interface of interface group.Referring to FIG. 4, being
LED matrix 2 is connected to another embodiment schematic diagram of interface group 1 in backlight keyboard of the present invention.Auxiliary circuit includes direct current
Source VDD, first resistor R1 and Voltage stabilizing module 6, as an example, Voltage stabilizing module 6 include third diode, as an example, third
Diode may include the diode of three series aiding connections.The anode of third diode is passing through first resistor and DC power supply just
Extremely it is connected, the cathode ground connection of third diode.First resistor R1 is connected by first node with Voltage stabilizing module 6, first node
The first node of voltage stabilization, auxiliary circuit is connected by second resistance 7 with the lamp control interface of interface group 1.Second resistance includes
R2, R3 and R4.As an example, D5 can be diode 5819, and D6 and D7 can be diode 4148, and the resistance value of R1 is the Europe 2K
The resistance value of nurse, R2, R3, R4 is identical, is 1K ohm.It, can be directly logical in power supply when the voltage and current that interface group 1 provides is less than normal
It crosses first resistor R1 and second resistance 7 is supplemented, if the voltage and current of the offer of interface group 1 is bigger than normal, second can be passed through
Resistance 7 and Voltage stabilizing module 6 are discharged, to complete coordinated manipulation.
Backlight keyboard provided by the invention can improve the display effect of keyboard back light mode, preferably realize keyboard back light
With interacting for key, that is to say, that often press one-touch, keyboard back light can make the backlight variation of certain rule.Preferably,
Backlight keyboard provided in an embodiment of the present invention can realize the bright light-emitting mode of single-point very well, that is to say, that keyboard controller,
In detecting the key-press matrix when pressing operation of the first key, opens in the LED matrix and pressed corresponding to described first
The LED of key, and the LED for corresponding to other keys other than first key is closed in the LED matrix.It needs to illustrate
It is that the first key is not limited to a key, two or more keys can also be represented.
Backlight keyboard provided by the invention can also realize other light-emitting modes well, such as:
Laser diffusion: be by by by key centered on do backlight horizontal proliferation, such as: pressing G key, then during backlight with G key is
The heart, does symmetrical backlight diffusion, and left side is passed through: F, D, S, A, Capslock, right side are passed through: H, J, K, L,；,',Enter_L,4,5,
6, and left and right is to carry out simultaneously, and when diffusion, the key-press backlight LED first passed through gradually extinguishes from highlighted, and so on；
Ripples diffusion: be by by by key centered on point do round backlight and spread, such as press S key, then, close to S key periphery
One circle key are as follows: AZXDEW, and so on, backlight since the key S key pressed to first lap periphery to second circle periphery,
Until all keys, do and extinguish step by step, the position that key-press backlight first passes through first is done extinguishes step by step, and so on；
S type streamer: backlight flows to the left since the first row rightmost side, goes to second after the key of the first row leftmost side
Row leftmost side key, then to the right, the third line most rear side key is gone to after the second row rightmost side key, then to the left, Zhi Dao
Fourth line leftmost side key is gone to after three row leftmost side keys, then to the right, goes to fifth line after the key of the fourth line rightmost side
Rightmost side key, then to the left, until the fifth line leftmost side goes to the 6th row leftmost side, then to the right；S walking along the street line is completed with this；
S type backlight variation when, the quantity of LED can be increased and decreased, e.g., can flowed with a LED, can also with 2, as long as
Be not more than or streamer can be completed equal to the quantity of full keyboard key (the LED quantity of minimum streamer is 1)；
S type backlight can change S molded line road, such as reverse streamer.
By the way that the recording program of light-emitting mode is arranged in button controller, user can be convenient to hair provided by the invention
Light keyboard record light-emitting mode so that backlight keyboard carried out according to the customized light-emitting mode of user it is luminous, such as, it is only necessary to
This eight key light emittings of QWERASDF, this 8 key-press backlights that can be needed by recording backlight path selection, thus constitute
Local key light emitting effect.But the recording program of existing light-emitting mode does not meet the understanding logic of most of user, it is not square
Just the recording operation of user, therefore, referring to Fig. 5, the present invention also provides a kind of method for recording of backlight mode, comprising:
501, it receives user and starts the instruction for recording process；
502, it determines that unrecorded key is the first key, determines that the key recorded is the second key；
503, the corresponding backlight LED low-light level of the first key of control shines or extinguishes, the corresponding backlight of the second key of control
LED high brightness shines；
After keyboard controller receives the instruction that user starts recording process, it can forbid sending key press information
Equipment to being connected with backlight keyboard, such as host computer.Keyboard controller receive user start record process instruction it
Afterwards, it can control the corresponding backlight LED low-light level of the first key to shine or extinguish, the corresponding backlight LED high of the second key of control
Intensity LEDs are recorded and unrecorded key with distinguishing.
504, the selection instruction to the second key is received；
505, the corresponding backlight LED of the second key of control extinguishes or low-light level shines；
After keyboard controller is received to the selection instruction of the second key, it can determine that user cancels second recorded and presses
Key, can control the corresponding backlight LED extinguishing of the second key at this time or low-light level shines, it is preferred that can open recording instruction
Lamp, to prompt user that can start the key that selection is recorded.
506, user is received to the selection instruction of third key；
507, it determines that third key is the key recorded, and controls third key high brightness and shine；
508, receiving user terminates to record the instruction of process, and saving third key is the key recorded；
Recording indicator light can be extinguished at this time, and can restore for key press information to be sent to and be connected with backlight keyboard
Equipment.
It should be noted that the first key, the second key and third key can refer to a key, it also may include multiple
Key is not specifically limited herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of backlight keyboard characterized by comprising
Key-press matrix, Light-emitting diode LED matrix and keyboard controller, the LED in the LED matrix are arranged to described
Key in key-press matrix carries out back lighting, and the keyboard controller is used to detect the pressing behaviour of key in the key-press matrix
Make, and by including that the interface group of multiple lamp control interfaces controls shining for LED in the LED matrix；
The LED matrix includes the first LED and the 2nd LED, and the first conducting voltage of the first LED is higher than the 2nd LED
The second conducting voltage, the first electrode of the 2nd LED connect by target diode group and the first lamp control of the interface group
Mouth is connected；
The target diode group includes the first diode and the second diode of reverse parallel connection.
2. backlight keyboard according to claim 1, which is characterized in that the conducting voltage of the first diode is higher than described
The conducting voltage of second diode.
3. backlight keyboard according to claim 2, which is characterized in that the first electrode of the 2nd LED is cathode, described
The second electrode of 2nd LED is anode.
4. backlight keyboard according to claim 3, which is characterized in that the anode and described second of the first diode
The cathode of LED is connected.
5. backlight keyboard according to any one of claim 1 to 4, which is characterized in that the backlight keyboard further includes auxiliary
Circuit is helped, the auxiliary circuit includes DC power supply, first resistor and Voltage stabilizing module, and the first resistor passes through first node
It is connected with the Voltage stabilizing module, the voltage stabilization of the first node；
The first node of the auxiliary circuit is connected by second resistance with the lamp control interface of the interface group.
6. backlight keyboard according to claim 5, which is characterized in that the Voltage stabilizing module includes third diode.
7. backlight keyboard according to claim 6, which is characterized in that the anode of the third diode passes through described first
Resistance is connected with the anode of the DC power supply, the cathode ground connection of the third diode.
8. backlight keyboard according to claim 7, which is characterized in that the keyboard controller includes key master control and backlight
Control module；
The key master control is used to detect the pressing operation of key in the key-press matrix, and sends to the backlight control module
Control instruction；
The backlight control module is used to execute the control instruction that the key master control is sent, by including multiple lamp control interfaces
Interface group controls shining for LED in the LED matrix.
9. backlight keyboard according to claim 8, which is characterized in that the keyboard controller is detecting the key
In matrix when the pressing operation of the first key, the LED for corresponding to first key in the LED matrix is opened, and close institute
State the LED for corresponding to other keys other than first key in LED matrix.
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| CN201710240411.1A CN106851926B (en) | 2017-04-13 | 2017-04-13 | A kind of backlight keyboard |
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|---|---|---|---|
| CN201710240411.1A CN106851926B (en) | 2017-04-13 | 2017-04-13 | A kind of backlight keyboard |
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| CN106851926A CN106851926A (en) | 2017-06-13 |
| CN106851926B true CN106851926B (en) | 2019-07-12 |
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| TWI696409B (en) * | 2019-07-19 | 2020-06-11 | 致伸科技股份有限公司 | Method and input device for adjusting color of rgbw light emitting element |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207166817U (en) * | 2017-04-13 | 2018-03-30 | 深圳市信必成实业有限公司 | A kind of backlight keyboard |
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| CN100364022C (en) * | 2004-10-19 | 2008-01-23 | 乐金电子(中国)研究开发中心有限公司 | Keyboard back light device and its method |
| CN101740253A (en) * | 2008-11-26 | 2010-06-16 | 广州专尚音响器材有限公司 | Colored backlight keyboard |
| US9084321B2 (en) * | 2013-07-15 | 2015-07-14 | Shenzhen China Star Optoelectronics Technology Co., Ltd | LED backlight system and display device |
| CN104763971B (en) * | 2015-04-24 | 2017-02-22 | 深圳市江湾数码科技有限公司 | Keyboard backlight LED lamp color mixing system |
| CN106027067B (en) * | 2016-02-29 | 2019-04-16 | 苏州达方电子有限公司 | Key-press matrix |
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| CN207166817U (en) * | 2017-04-13 | 2018-03-30 | 深圳市信必成实业有限公司 | A kind of backlight keyboard |
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