CN207166817U

CN207166817U - A kind of backlight keyboard

Info

Publication number: CN207166817U
Application number: CN201720386017.4U
Authority: CN
Inventors: 黄修海
Original assignee: Shenzhen Xinbicheng Industry Co Ltd
Current assignee: Shenzhen Xinbicheng Industry Co Ltd
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2018-03-30
Anticipated expiration: 2027-04-13

Abstract

The utility model embodiment discloses a kind of backlight keyboard, is related to keyboard field of luminescent technology, the conducting voltage difference for not considering LED for solving the design of LED matrix in existing backlight keyboard, the problem of influenceing the display effect of some backlight modes.Backlight keyboard includes：Key-press matrix, LED matrix and KBC, LED in LED matrix is arranged to carry out back lighting to the button in key-press matrix, KBC is used to detecting the pressing operation of button in key-press matrix, and controls by the interface group including multiple lamp control interfaces that LED's in LED matrix is luminous；LED matrix includes the first LED and the 2nd LED, and the first LED the first conducting voltage is higher than the 2nd LED the second conducting voltage, and the 2nd LED first electrode is connected by target diode group with the first lamp control interface of interface group.

Description

A kind of backlight keyboard

Technical field

It the utility model is related to keyboard field of luminescent technology, more particularly to a kind of backlight keyboard.

Background technology

Most users not only focus on its function when selecting electronic product, also pay close attention to its fashion with interesting, especially table Now to the pursuit of color.Therefore Unicolor back light keyboard can not meet consumer demand, and with colored backlight and The keyboard of a variety of backlight modes is gradually by consumers.

The backlight of keyboard typically uses LED matrix to realize, when the voltage for being added in the interpolars of LED two surpasses Cross conducting voltage V_fWhen, LED electroluminescent, LED glow color is often different and different because of LED materials.Colored backlight key Disk needs to set the LED of manifold color-emitting simultaneously in the LED matrix of keyboard, and prior art is in Unicolor back light keyboard LED squares 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 glow color differs greatly, its conducting voltage V_fOften difference is also very big, colored backlight keyboard The LED commonly used in LED matrix conducting voltage generally includes two conducting voltages to differ greatly, and in some backlight modes In, it is necessary to control both LED simultaneously.But existing LED matrix design does not consider LED conducting voltage difference, shadow The display effect of some backlight modes has been rung, such as, unrelated key-press backlight Weak-luminescence occurs in single-button backlight Phenomenon, backlight keyboard is constrained in raising aesthetically.

The content of the invention

The utility model embodiment provides a kind of backlight keyboard, for solving LED matrix designs in existing backlight keyboard LED conducting voltage difference is not considered, the problem of influenceing the display effect of some backlight modes.

To reach above-mentioned purpose, the one side of the utility model embodiment provides a kind of backlight keyboard, including：By bond moment Battle array, LED matrix and KBC, the LED in the LED matrix are arranged to the key-press matrix In button carry out back lighting, the KBC is used to detect the pressing operation of button in the key-press matrix, and leads to Cross interface group including multiple lamp control interfaces and control that LED's in the LED matrix is luminous；

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 LED the second conducting voltage, 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 in a first aspect, in the first possible implementation of first aspect, the target diode group includes The first diode and the second diode of reverse parallel connection.

With reference to the first possible implementation of first aspect, in second of possible implementation of first aspect In, the conducting voltage of first diode is higher than the conducting voltage of second diode.

With reference to second of possible implementation of first aspect, in the third possible implementation of first aspect In, the first electrode of the 2nd LED is negative pole, and the second electrode of the 2nd LED is positive pole.

With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect In, the positive pole of first diode is connected with the negative pole of the 2nd LED.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect It is any one in existing mode, the 4th kind of possible implementation of the third possible implementation and first aspect of first aspect The possible implementation of kind, in the 5th kind of possible implementation of first aspect, the backlight keyboard also includes auxiliary electricity Road, the auxiliary circuit include dc source, first resistor and Voltage stabilizing module, and the first resistor passes through first node and institute State 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.

With reference to the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation of first aspect In, the Voltage stabilizing module includes the 3rd diode.

With reference to the 6th kind of possible implementation of first aspect, in the 7th kind of possible implementation of first aspect In, the positive pole of the 3rd diode is connected by the first resistor with the positive pole of the dc source, the three or two pole The negative pole ground connection of pipe.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect Existing mode, the third possible implementation of first aspect, the 4th kind of possible implementation, first aspect of first aspect The 5th kind of possible implementation, the 7th kind of the 6th kind of possible implementation and first aspect 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 button master control and backlight control module；

The button master control is used to detecting the pressing operation of button in the key-press matrix, and to the backlight control module Send control instruction；

The backlight control module is used to perform the control instruction that the button master control is sent, by being connect including multiple lamp controls LED's is luminous in the interface group control LED matrix of mouth.

Second of possible reality of the first possible implementation, first aspect with reference to first aspect, first aspect Existing mode, the third possible implementation of first aspect, the 4th kind of possible implementation, first aspect of 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 8th kind of possible implementation of implementation and first aspect, in first aspect In 9th kind of possible implementation, the KBC, the pressing behaviour of the first button in the key-press matrix is detected When making, the LED for corresponding to first button in the LED matrix is opened, and close and correspond to described the in the LED matrix The LED of other buttons beyond one button.

As can be seen from the above technical solutions, the utility model embodiment has advantages below：

Backlight keyboard provided by the utility model, it is contemplated that different LED conducting voltage difference in LED matrix, will turn on The relatively low LED of voltage is connected to lamp control interface by target diode group, and can reducing lamp control interface, to be added in conducting voltage relatively low The interpolars of LED two voltage, improve the display effect of backlight mode.

Brief description of the drawings

Fig. 1 is the utility model backlight keyboard one embodiment schematic diagram；

Fig. 2 is another embodiment schematic diagram of the utility model backlight keyboard；

Fig. 3 is that LED matrix is connected to interface group one embodiment schematic diagram in the utility model backlight keyboard；

Fig. 4 is that LED matrix is connected to interface group another embodiment schematic diagram in the utility model backlight keyboard；

Fig. 5 is method for recording one embodiment schematic diagram of the utility model backlight mode.

Embodiment

The utility model embodiment provides a kind of backlight keyboard, for improving the display effect of backlight mode.

In order that those skilled in the art are better understood from the utility model, it is real below in conjunction with the utility model The accompanying drawing in example is applied, the technical scheme in the embodiment of the utility model is purged, completely described, it is clear that be described Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all should When the scope for belonging to the utility model protection.

Term " first ", " second ", " the 3rd " in specification and claims of the present utility model and above-mentioned accompanying drawing, The (if present) such as " the 4th ", " the 5th " is for distinguishing similar object, without for describing specific order or priority Order.It should be appreciated that the data so used can exchange in the appropriate case, so as to the embodiments described herein can with except Order beyond the content for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and theirs is any Deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, production Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for this Other intrinsic steps of a little process, method, product or equipment or unit.

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 pole and negative pole During more than its conducting voltage, the LED can just light.LED in the market, which has, distinguishes high break-over voltage and low conducting voltage, high The LED of conducting voltage mainly has following several：Blueness, white, cyan, aubergine, hyacinthine etc.；The LED master of low conducting voltage Have：Red, orange, yellow, green etc..The LED commonly used in the LED matrix of colored backlight keyboard conducting voltage generally includes Two conducting voltages to differ greatly, and, it is necessary to control both LED simultaneously in some backlight modes.KBC leads to The luminous or closing of LED in LED matrix is controlled usually through the level of different lamp control interfaces output, when LED positive poles input high electricity When flat " 1 ", negative pole input low level " 0 ", LED will generally light, and input when the equal input high level in LED the two poles of the earth or low electricity It is flat, or when positive pole input low level " 0 ", negative pole input high level " 1 ", LED just will not light.Assuming that low conducting voltage is 1.4V, high break-over voltage 3.7V, then the voltage difference between high level " 1 " and low level " 0 " needs to be more than 3.7V, could control The LED of high break-over voltage processed lights.But in some light-emitting modes, such as the LED in high break-over voltage and low conducting voltage LED it is luminous after, it is necessary to the LED of low conducting voltage be closed, because the voltage difference of its two interpolar is decreased below from 3.7V 1.4V has certain time-delay, and Weak-luminescence still occurs in the LED of low conducting voltage, and the corresponding speed of closing is low, have impact on backlight The display effect of pattern.

Fig. 1 is refer to, for one embodiment schematic diagram of the utility model backlight keyboard, the back of the body of the utility model embodiment Light keyboard can include：Key-press matrix 5, LED matrix 2 and KBC 4, the LED quilts in LED matrix 2 It is arranged to carry out the button in key-press matrix 5 back lighting, KBC 4 is used to detect pressing for button in key-press matrix 5 Press operation, and control by interface group 1 including multiple lamp control interfaces that LED's in LED matrix 2 is luminous, specifically, can pass through Control that LED's in the Automatic level control LED matrix 2 of multiple lamp control interfaces output is luminous.

LED matrix 2 includes the first LED201 and the 2nd LED202, and the first LED201 the first conducting voltage is higher than second LED202 the second conducting voltage, the first LED201 the two poles of the earth directly can be connected with the lamp control interface of interface group 1, and second LED202 first electrode is connected by target diode group 3 with the first lamp control interface 101 of interface group 1, the 2nd LED202's Second electrode directly can be connected with the second lamp control interface 102 of interface group 1.First LED can include one or more LED, 2nd LED can also include one or more LED, and specific number does not limit.

Fig. 2 is refer to, is another embodiment schematic diagram of the utility model backlight keyboard, the utility model embodiment Backlight keyboard can include：Key-press matrix 5, LED matrix 2 and KBC 4, the LED in LED matrix 2 It is arranged to carry out back lighting to the button in key-press matrix 5, KBC 4 includes button master control 401 and backlight control Module 402, button master control 401 is used for the pressing operation for detecting button in key-press matrix 5, and is sent to backlight control module 402 Control instruction；Backlight control module 402 is used for the control instruction for performing the transmission of button master control 401, by being connect including multiple lamp controls LED's is luminous in the control LED matrix 2 of interface group 1 of mouth.

LED matrix 2 includes the first LED201 and the 2nd LED202, and the first LED201 the first conducting voltage is higher than second LED202 the second conducting voltage, the first LED201 the two poles of the earth directly can be connected with the lamp control interface of interface group 1, and second LED202 first electrode is connected by target diode group 3 with the first lamp control interface 101 of interface group 1, the 2nd LED202's Second electrode directly can be connected with the second lamp control interface 102 of interface group 1.

Preferably, first electrode can be negative pole, and second electrode can be positive pole, and target diode group includes reverse parallel connection The first diode and the second diode, the conducting voltage of the first diode is higher than the conducting voltage of the second diode, the one or two The positive pole of pole pipe is connected with the 2nd LED negative pole.Fig. 3 is refer to, is that LED matrix 2 is connected in the utility model backlight keyboard One embodiment schematic diagram of interface group 1.In Fig. 3, as an example, LED matrix 2 includes 6 LED, and the first LED201 includes LED3 and LED4, the 2nd LED202 include LED1, LED2, LED5 and LED6, and interface group 1 includes three lamp control interfaces, and lamp control connects Mouth 1, lamp control interface 2 and lamp control interface 3, target diode group 3 can include the first diode (D1 in Fig. 3 of reverse parallel connection And D3) and the second diode (D2 and D4 in Fig. 3), the conducting voltage of the first diode (D1 and D3 in Fig. 3) can be higher than The conducting voltage of second diode (D2 and D4 in Fig. 3).

In order that the output voltage of interface group 1 is more stable, it is preferred that backlight keyboard also includes auxiliary circuit, auxiliary circuit Including dc source, 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.Fig. 4 is refer to, is LED matrix 2 is connected to another embodiment schematic diagram of interface group 1 in the utility model backlight keyboard.Auxiliary circuit includes straight Power vd D, first resistor R1 and Voltage stabilizing module 6 are flowed, as an example, Voltage stabilizing module 6 includes the 3rd diode, as an example, 3rd diode can include the diode of three series aiding connections.The positive pole of 3rd diode passes through first resistor and dc source Positive pole be connected, the negative pole of the 3rd diode ground connection.First resistor R1 is connected by first node with Voltage stabilizing module 6, first segment The voltage stabilization of point, the first node of auxiliary circuit are connected by second resistance 7 with the lamp control interface of interface group 1.Second resistance Including R2, R3 and R4.As an example, D5 can be diode 5819, and D6 and D7 can be diode 4148, and R1 resistance is 2K ohms, R2, R3, R4 resistance are identical, are 1K ohms.When the voltage x current that interface group 1 provides is less than normal, can directly exist Power supply is supplemented by first resistor R1 and second resistance 7, if the voltage x current of the offer of interface group 1 is bigger than normal, Ke Yitong Cross second resistance 7 and Voltage stabilizing module 6 is discharged, to complete coordinated manipulation.

Backlight keyboard provided by the utility model can improve the display effect of keyboard back light pattern, preferably realize keyboard The interaction of backlight and button, that is to say, that often by one-touch, keyboard back light can make the backlight change of certain rule.It is excellent Choosing, the backlight keyboard that the utility model embodiment provides, the bright light-emitting mode of single-point can be realized very well, that is to say, that key Disk controller, in the pressing operation of the first button in detecting the key-press matrix, open and correspond to institute in the LED matrix The LED of the first button is stated, and closes the LED of other buttons corresponded in the LED matrix beyond first button.Need Illustrate, the first button is not limited to a button, can also represent two or more buttons.

Backlight keyboard provided by the utility model can also realize other light-emitting modes well, such as：

Laser spreads：Be by by by button centered on do backlight horizontal proliferation, such as：Press G keys, then backlight using G keys in 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, during diffusion, the key-press backlight LED first passed through gradually extinguishes from highlighted, by that analogy；

Ripples spread：Be by by by button centered on point do circular backlight and spread, such as press S keys, then, close to S keys periphery One circle button be：AZXDEW, by that analogy, backlight are peripheral to first lap periphery to the second circle since the button S keys pressed, Until all buttons, do and extinguish step by step, the position that key-press backlight first passes through first is done extinguishes step by step, by that analogy；

S type streamers：Backlight is flowed to the left since the first row rightmost side, and second is gone to after the button of the first row leftmost side Row leftmost side button, then to the right, the third line most rear side button, then to the left, Zhi Dao are gone to after the second row rightmost side button Fourth line leftmost side button is gone to after three row leftmost side buttons, then to the right, fifth line is gone to after the button of the fourth line rightmost side Rightmost side button, 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 lines are completed with this；

S types backlight can increase and decrease LED quantity, e.g., can flowed with a LED in change, can also be 2, as long as Be not more than or can complete streamer equal to the quantity of full keyboard button (the LED quantity of minimum streamer is 1)；

S types backlight can change S molded line road, such as reverse streamer.

By setting the recording program of light-emitting mode in button controller, user can be facilitated to provide the utility model Illuminated keyboard record light-emitting mode so that backlight keyboard is lighted according to user-defined light-emitting mode, 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, are thus constituted Local key light emitting effect.It is not square but the recording program of existing light-emitting mode does not meet the understanding logic of most of user Just the recording operation of user, therefore, referring to Fig. 5, the utility model also provides a kind of method for recording of backlight mode, including：

501st, receive user and start the instruction for recording flow；

502nd, it is the first button to determine unrecorded button, it is determined that the button recorded is the second button；

503rd, control backlight LED low-light levels corresponding to the first button luminous or extinguish, control backlight corresponding to the second button LED high brightness lights；

After KBC receives the instruction that user starts recording flow, it can forbid sending key press information Equipment to being connected with backlight keyboard, such as host computer.KBC receive user start record flow instruction it Afterwards, backlight LED low-light levels corresponding to the first button can be controlled luminous or extinguished, control backlight LED corresponding to the second button high Intensity LEDs, recorded and unrecorded button with distinguishing.

504th, the selection instruction to the second button is received；

505th, backlight LED extinguishings or low-light level corresponding to the second button is controlled to light；

After KBC is received to the selection instruction of the second button, it may be determined that user cancels second recorded and pressed Key, backlight LED extinguishings or low-light level corresponding to the second button can be now controlled to light, it is preferred that recording instruction can be opened Lamp, to prompt user to start the button that selection is recorded.

506th, selection instruction of the user to the 3rd button is received；

507th, it is the button recorded to determine the 3rd button, and controls the 3rd button high brightness to light；

508th, receive user to terminate to record the instruction of flow, and it is the button recorded to preserve the 3rd button；

Recording indicator lamp can now be extinguished, and can recover to send key press information to backlight keyboard and be connected Equipment.

It should be noted that the first button, the second button and the 3rd button can refer to a button, can also include multiple Button, it is not specifically limited herein.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with Realize by another way.For example, device embodiment described above is only schematical, for example, the unit Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit Close or communicate to connect, can be electrical, mechanical or other forms.

The unit illustrated as separating component can be or may not be physically separate, show as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.

Described above, above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although ginseng The utility model is described in detail according to previous embodiment, it will be understood by those within the art that：It is still Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced Change；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technical scheme Spirit and scope.

Claims

A kind of 1. backlight keyboard, it is characterised in that including：

Key-press matrix, LED matrix and KBC, the LED in the LED matrix are arranged to described Button in key-press matrix carries out back lighting, and the KBC is used for the pressing behaviour for detecting button in the key-press matrix Make, and control by interface group including multiple lamp control interfaces that LED's in the LED matrix is luminous；

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 the first lamp control of target diode group and the interface group Mouth is connected.
2. backlight keyboard according to claim 1, it is characterised in that the target diode group includes the of reverse parallel connection One diode and the second diode.
3. backlight keyboard according to claim 2, it is characterised in that the conducting voltage of first diode is higher than described The conducting voltage of second diode.
4. backlight keyboard according to claim 3, it is characterised in that the first electrode of the 2nd LED is negative pole, described 2nd LED second electrode is positive pole.
5. backlight keyboard according to claim 4, it is characterised in that the positive pole of first diode and described second LED negative pole is connected.
6. backlight keyboard according to any one of claim 1 to 5, it is characterised in that the backlight keyboard also includes auxiliary Circuit is helped, the auxiliary circuit includes dc source, 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.
7. backlight keyboard according to claim 6, it is characterised in that the Voltage stabilizing module includes the 3rd diode.
8. backlight keyboard according to claim 7, it is characterised in that the positive pole of the 3rd diode passes through described first Resistance is connected with the positive pole of the dc source, the negative pole ground connection of the 3rd diode.
9. backlight keyboard according to claim 8, it is characterised in that the KBC includes button master control and backlight Control module；

The button master control is used for the pressing operation for detecting button in the key-press matrix, and is sent to the backlight control module Control instruction；

The backlight control module is used to perform the control instruction that the button master control is sent, by including multiple lamp control interfaces LED's is luminous in the interface group control LED matrix.
10. backlight keyboard according to claim 9, it is characterised in that the KBC, detecting the button In matrix during the pressing operation of the first button, the LED for corresponding to first button in the LED matrix is opened, and close institute State the LED of other buttons corresponded in LED matrix beyond first button.