CN111182680B - Button device and conference are dull and stereotyped - Google Patents
Button device and conference are dull and stereotyped Download PDFInfo
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- CN111182680B CN111182680B CN202010064854.1A CN202010064854A CN111182680B CN 111182680 B CN111182680 B CN 111182680B CN 202010064854 A CN202010064854 A CN 202010064854A CN 111182680 B CN111182680 B CN 111182680B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1662—Details related to the integrated keyboard
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Abstract
The invention discloses a key device and a conference panel, comprising a backlight module for generating uniform backlight; the touch PCB is used for touching and generating a key signal and transmitting light; the adapter plate is used for generating a key signal according to the touch signal and realizing signal transmission; a structural cover plate provided with a key LOGO; the adapter plate, the backlight module, the touch PCB and the structural cover plate are sequentially arranged from inside to outside, backlight penetrates through the touch PCB to irradiate on the key LOGO, and the adapter plate is respectively connected with the backlight module, the touch PCB and the main board. The backlight module and the touch PCB are connected with the main board through the adapter plate so as to realize touch key control and backlight output; and combining the touch PCB with the backlight module and the structural cover plate to obtain uniform key backlight.
Description
Technical Field
The invention relates to the field of key devices, in particular to a key device and a conference tablet.
Background
The key structure of current conference flat board includes pilot lamp and resilience formula entity button, place in the pilot lamp behind the resilience formula entity button, resilience formula entity button sets up and is used for realizing the on & off function on the conference flat board. However, although the above-mentioned key structure can realize the key function, the indicator lights are not uniform in illumination, which causes uneven brightness around the key, and the resilient key is inconvenient to use.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a key device and a conference flat plate, wherein a backlight module and a touch PCB are connected with a main board through a transfer plate so as to realize touch key control and backlight output; and combining the touch PCB with the backlight module and the structural cover plate to obtain uniform key backlight.
In order to achieve the purpose, the invention adopts the following technical scheme:
a key device comprises a backlight module for generating uniform backlight; the touch PCB is used for touching and generating a key signal and transmitting light; the adapter plate is used for generating a key signal according to the touch signal and realizing signal transmission; a structural cover plate provided with a key LOGO; the adapter plate, the backlight module, the touch PCB and the structural cover plate are sequentially arranged from inside to outside, backlight penetrates through the touch PCB to irradiate on the key LOGO, and the adapter plate is respectively connected with the backlight module, the touch PCB and the main board.
The adapter plate is provided with a touch key circuit for detecting a touch signal, and the touch key circuit is connected with the touch PCB.
The adapter plate is also provided with a backlight module control circuit used for controlling the backlight module to emit light, and the backlight module control circuit is connected with the backlight module.
The adapter plate is also provided with a first connector, a second connector and a third connector;
the fourth pin of the first connector is connected with the touch PCB and the touch key circuit, and the first pin, the second pin, the third pin, the fifth pin and the sixth pin of the first connector are all grounded;
the first pin and the second pin of the second connector are connected with the anode of the backlight module and the backlight module control circuit, the third pin and the fourth pin of the second connector are connected with the cathode of the backlight module and the backlight module control circuit, and the fifth pin and the sixth pin of the second connector are both grounded;
the first pin and the second pin of the third connector are both connected with the mainboard and the backlight module control circuit, the third pin of the third connector is grounded, the fourth pin of the third connector is connected with the mainboard, the touch key circuit and the backlight module control circuit, the fifth pin of the third connector is connected with the mainboard and the touch key circuit, and the sixth pin, the seventh pin and the eighth pin of the third connector are all grounded.
The touch key circuit comprises a touch chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, a first triode and a first electrostatic protection diode;
a pin Q of the touch chip is connected to one end of the first resistor and one end of the second resistor, the other end of the first resistor is grounded, the other end of the second resistor is connected to a base of the first triode, a collector of the first triode is connected to a fifth pin of the third connector, an emitter of the first triode is grounded, a pin I of the touch chip is connected to one end of the first capacitor and one end of the third resistor, the other end of the first capacitor is grounded, the other end of the third resistor is connected to one end of the first electrostatic protection diode and the fourth pin of the first connector, the other end of the first electrostatic protection diode is grounded, an AHLB pin of the touch chip is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to the fourth pin of the third connector, one end of the fifth resistor and one end of the second capacitor, One end of the third capacitor is connected with a VDD pin of the touch chip, the other ends of the second capacitor and the third capacitor are both grounded, and the other end of the fifth resistor is connected with a TOG pin of the touch chip.
The backlight module control circuit comprises a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a second triode and a second electrostatic protection diode;
one end of the sixth resistor is connected with a second pin of the third connector, one end of the seventh resistor is connected with a fourth pin of the third connector, the other end of the sixth resistor and the other end of the seventh resistor are both connected with a first pin and a second pin of the second connector, a third pin and a fourth pin of the second connector are both connected with a collector of the second triode and one end of the eighth resistor, the other end of the eighth resistor and an emitter of the second triode are both grounded, a base of the second triode is connected with one end of the ninth resistor, the other end of the ninth resistor is connected with one end of the tenth resistor, the second electrostatic protection diode and the first pin of the third connector, and the other end of the tenth resistor and the other end of the second electrostatic protection diode are both grounded.
The touch PCB is connected with the adapter plate through an FPC wire.
The backlight module is connected with the adapter plate through an FPC wire.
And the FPC wire is wrapped with an aluminum foil with a single-side conductive single-back adhesive.
The utility model provides a conference is dull and stereotyped, the conference is dull and stereotyped including shell, mainboard and screen, the shell includes preceding frame and backshell, the window that suits with the screen size is seted up to preceding frame, the screen sets up in the window, preceding frame passes through buckle structure lock with the backshell, the mainboard sets up on the support of screen backplate, as above the button device set up in the preceding frame, the button device is connected with the mainboard electricity.
Compared with the prior art, the key device and the conference panel provided by the invention comprise a backlight module for generating uniform backlight; the touch PCB is used for touching and generating a key signal and transmitting light; the adapter plate is used for generating a key signal according to the touch signal and realizing signal transmission; a structural cover plate provided with a key LOGO; the adapter plate, the backlight module, the touch PCB and the structural cover plate are sequentially arranged from inside to outside, backlight penetrates through the touch PCB to irradiate on the key LOGO, and the adapter plate is respectively connected with the backlight module, the touch PCB and the main board. The backlight module and the touch PCB are connected with the main board through the adapter plate so as to realize touch key control and backlight output; and combining the touch PCB with the backlight module and the structural cover plate to obtain uniform key backlight.
Drawings
Fig. 1 is a block diagram of a key device according to the present invention;
FIG. 2 is a circuit diagram of a touch button circuit and a first connector according to the present invention;
FIG. 3 is a circuit diagram of a backlight module control circuit and a second connector according to the present invention;
fig. 4 is a circuit diagram of a third connector provided in the present invention.
Detailed Description
In view of the problems in the prior art, the invention provides a key device and a conference flat plate, wherein a backlight module and a touch PCB are connected with a main board through a transfer plate so as to realize touch key control and backlight output; and combining the touch PCB with the backlight module and the structural cover plate to obtain uniform key backlight.
The embodiments of the present invention are intended to explain technical concepts of the present invention, technical problems to be solved, technical features constituting technical solutions, and technical effects to be brought about in more detail. The embodiments are explained below, but the scope of the present invention is not limited thereto. Further, the technical features of the embodiments described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, the present invention provides a key device, including a backlight module 300 for generating uniform backlight; a touch PCB 200 for touching and generating a KEY signal KEY and transmitting light; the adapter board 400 is used for generating a KEY signal KEY according to the TOUCH signal TOUCH _ I N and realizing signal transmission; a structural cover plate 100 provided with keys LOGO.
The adapter plate 400, the backlight module 300, the touch PCB 200 and the structural cover plate 100 are sequentially disposed from inside to outside. A hollow part for transmitting light is arranged on the touch PCB 200, and backlight generated by the backlight module 300 irradiates the key LOGO of the structural cover plate 100 through the hollow part, so that the key LOGO emits light; meanwhile, the TOUCH PCB 200 adopts the capacitive TOUCH PCB 200 to implement the TOUCH KEY function, when a finger touches, capacitance change occurs on the TOUCH PCB 200 to generate a TOUCH signal TOUCH _ I N, the adapter board 400 receives the TOUCH signal TOUCH _ I N and generates a KEY signal KEY to be sent to the motherboard 500, and the main control chip on the motherboard 500 receives the KEY signal KEY and implements the KEY function. The adapter board 400 connects the backlight module 300 and the touch PCB 200 with the main board 500 to realize touch key control and backlight output; the touch PCB 200, the backlight module 300 and the structural cover plate 100 are combined to obtain uniform key backlight. Particularly, in this embodiment, the motherboard 500 is an android motherboard.
In particular, the key device is arranged on a structural profile of the conference tablet (i.e. the housing of the conference tablet). Optionally, the housing includes a front frame and a rear housing, the front frame is provided with a penetration groove, the structure cover plate 100 is disposed in the penetration groove, the touch PCB 200 is disposed on the structure cover plate 100, the backlight module 300 is disposed on the back of the touch PCB 200 (one side of the touch PCB 200 contacting the structure cover plate 100 is defined as the front side), an internal support is disposed inside the front frame, and the adapter plate 400 is disposed on the internal support behind the backlight module 300 and connected to the backlight module 300, the touch PCB 200 and the motherboard 500. The main board 500 is disposed on a bracket of the screen backboard.
In particular, in this embodiment, can carry out the fretwork according to the LOGO pattern of difference on the touch PCB board 200, when guaranteeing that touch PCB board 200 has the touch button function, can be with the transmission to the button LOGO that is shaded again.
Further, in this embodiment, since the capacitive touch PCB 200 is adopted, the outermost structural cover plate 100 cannot be metallic, otherwise, the signal is shielded, and therefore, the structural cover plate 100 is an acrylic cover plate, and the LOGO pattern on the cover plate can be customized according to different customers; and the light transmitted by the backlight module 300 through the PCB will be irradiated onto the structural cover plate 100, so that the LOGO patterns will emit light at the same time.
Specifically, the interposer 400 is provided with a TOUCH key circuit for detecting a TOUCH signal TOUCH _ I N, and the TOUCH key circuit is connected to the TOUCH PCB 200.
The adapter plate 400 is further provided with a backlight module control circuit for controlling the backlight module 300 to emit light, and the backlight module control circuit is connected with the backlight module 300.
Specifically, referring to fig. 2 to 4, in the present embodiment, three connectors, namely a first connector J1, a second connector J2 and a third connector J3, are further disposed on the interposer 400; the fourth pin of the first connector J1 is connected to the touch PCB 200 and the touch button circuit, and the first pin, the second pin, the third pin, the fifth pin and the sixth pin of the first connector J1 are all grounded.
The first pin and the second pin of the second connector J2 are connected to the positive electrode of the backlight module 300 and the backlight module control circuit, the third pin and the fourth pin of the second connector J2 are connected to the negative electrode of the backlight module 300 and the backlight module control circuit, and the fifth pin and the sixth pin of the second connector J2 are both grounded.
The first pin and the second pin of the third connector J3 are both connected to the motherboard 500 and the backlight module control circuit, the third pin of the third connector J3 is grounded, the fourth pin of the third connector J3 is connected to the motherboard 500, the touch key circuit and the backlight module control circuit, the fifth pin of the third connector J3 is connected to the motherboard 500 and the touch key circuit, and the sixth pin, the seventh pin and the eighth pin of the third connector J3 are all grounded.
In this embodiment, the TOUCH PCB 200 is connected to the TOUCH key circuit through the first connector J1, and the TOUCH key circuit receives the TOUCH signal TOUCH _ I N generated by the TOUCH PCB 200 through the first connector J1; the second connector J2 connects the backlight module 300 with the backlight module control circuit, and the backlight module control circuit controls the backlight module 300 to emit light through the second connector J2; the third connector J3 is connected to the main board 500, the backlight module control circuit and the touch key circuit, and the third connector J3 is used for connecting a power supply and a backlight control signal LED _ GP io from the main board 500 to the backlight module control circuit; the third connector J3 also receives a KEY signal KEY from the touch KEY circuit and sends the KEY signal KEY to the motherboard 500, and the motherboard 500 implements a corresponding KEY function according to the received KEY signal KEY.
Specifically, please refer to fig. 2 to 4, the touch key circuit includes a touch chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first triode, and a first esd protection diode D1; a Q pin of the touch chip U1 is connected to one end of the first resistor R1 and one end of the second resistor R2, the other end of the first resistor R1 is grounded, the other end of the second resistor R2 is connected to a base of a first triode, a collector of the first triode is connected to a fifth pin of a third connector J3, an emitter of the first triode is grounded, an I pin of the touch chip U1 is connected to one end of a first capacitor C1 and one end of a third resistor R3, the other end of the first capacitor C1 is grounded, the other end of the third resistor R3 is connected to one end of a first electrostatic protection diode D1 and a fourth pin of the first connector J1, the other end of the first electrostatic protection diode D1 is grounded, an AHLB pin of the touch chip U1 is connected to one end of a fourth resistor R4, and the other end of the fourth resistor R4 is connected to a fourth pin of the third connector J3, One end of a fifth resistor R5, one end of a second capacitor C2, one end of a third capacitor C3 and a VDD pin of the touch chip U1 are connected, the other ends of the second capacitor C2 and the third capacitor C3 are both grounded, and the other end of the fifth resistor R5 is connected with a TOG pin of the touch chip U1.
Referring to fig. 2 to 4, in the present embodiment, the backlight module control circuit includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a second triode, and a second esd protection diode D2; one end of the sixth resistor R6 is connected to the second pin of the third connector J3, one end of the seventh resistor R7 is connected to the fourth pin of the third connector J3, the other end of the sixth resistor R6 and the other end of the seventh resistor R7 are both connected to the first pin and the second pin of the second connector J2, the third pin and the fourth pin of the second connector J2 are both connected to the collector of the second triode and one end of the eighth resistor R8, the other end of the eighth resistor R8 and the emitter of the second triode are both grounded, the base of the second triode is connected to one end of the ninth resistor R9, the other end of the ninth resistor R9 is connected to one end of the tenth resistor R10, the first pin of the second electrostatic protection diode D2 and the third connector J3, and the other end of the tenth resistor R10 and the other end of the second electrostatic protection diode D2 are both grounded. In this embodiment, the sixth resistor R6 is used to connect a standby VLED power supply, and the fourth resistor R4, the fifth resistor R5 and the seventh resistor R7 are used to connect a 5V/3.3V _ STB voltage.
Optionally, the backlight color of the backlight module 300 may be selected to be any color, and in this embodiment, the backlight color of the backlight module 300 is white. The backlight effect of the backlight module 300 can be controlled according to an android motherboard, the android motherboard controls the backlight module circuit through the LED _ GP IO, and the backlight effect can be controlled by the backlight control such as normal lighting/flashing/breathing.
Optionally, in this embodiment, the touch PCB 200 is connected to the first connector J1 of the interposer 400 through an FPC cable; the backlight module 300 is connected to the second connector J2 of the interposer 400 through an FPC cable. Because the touch PCB 200 is touched by a capacitor, it is sensitive to metal and conductor, and when it is connected by a common FFC wire, it is easy to trigger a key to cause a malfunction, so that it is necessary to perform special processing on the FFC wire, and the FFC wire is wrapped by a single-sided conductive single-back-adhesive aluminum foil to isolate the signal on the FFC wire from the external conductor, so that the key function is not triggered by a malfunction. Since the connection relationship among the touch PCB 200, the backlight module 300, the interposer 400 and the android motherboard has been described in detail above, no further description is given here.
The utility model provides a conference is dull and stereotyped, the conference is dull and stereotyped including shell, mainboard and screen, the shell includes preceding frame and backshell, the window that suits with the screen size is seted up to preceding frame, the screen sets up in the window, preceding frame passes through buckle structure lock with the backshell, the mainboard sets up on the support of screen backplate, as above the button device set up in the preceding frame, the button device is connected with the mainboard electricity. Since the key device has been described in detail above, it is not described in detail here.
In summary, the key device and the conference tablet provided by the invention with power supplied circularly comprise a backlight module for generating uniform backlight; the touch PCB is used for touching and generating a key signal and transmitting light; the adapter plate is used for generating a key signal according to the touch signal and realizing signal transmission; a structural cover plate provided with a key LOGO; the adapter plate, the backlight module, the touch PCB and the structural cover plate are sequentially arranged from inside to outside, backlight penetrates through the touch PCB to irradiate on the key LOGO, and the adapter plate is respectively connected with the backlight module, the touch PCB and the main board. The backlight module and the touch PCB are connected with the main board through the adapter plate so as to realize touch key control and backlight output; and combining the touch PCB with the backlight module and the structural cover plate to obtain uniform key backlight.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (8)
1. A key device, comprising:
a backlight module for generating uniform backlight;
the touch PCB is used for touching and generating a key signal and transmitting light;
the adapter plate is used for generating a key signal according to the touch signal and realizing signal transmission;
a structural cover plate provided with a key LOGO;
the adapter plate, the backlight module, the touch PCB and the structural cover plate are sequentially arranged from inside to outside, the backlight irradiates the key LOGO through the touch PCB, and the adapter plate is respectively connected with the backlight module, the touch PCB and the main board;
the adapter plate is also provided with a backlight module control circuit for controlling the backlight module to emit light, and the backlight module control circuit is connected with the backlight module; the adapter plate is also provided with a first connector, a second connector and a third connector;
the fourth pin of the first connector is connected with the touch PCB and the touch key circuit, and the first pin, the second pin, the third pin, the fifth pin and the sixth pin of the first connector are all grounded;
the first pin and the second pin of the second connector are connected with the anode of the backlight module and the backlight module control circuit, the third pin and the fourth pin of the second connector are connected with the cathode of the backlight module and the backlight module control circuit, and the fifth pin and the sixth pin of the second connector are both grounded;
the first pin and the second pin of the third connector are both connected with the mainboard and the backlight module control circuit, the third pin of the third connector is grounded, the fourth pin of the third connector is connected with the mainboard, the touch key circuit and the backlight module control circuit, the fifth pin of the third connector is connected with the mainboard and the touch key circuit, and the sixth pin, the seventh pin and the eighth pin of the third connector are all grounded.
2. The key device according to claim 1, wherein a touch key circuit for detecting a touch signal is disposed on the interposer, and the touch key circuit is connected to the touch PCB.
3. The key device according to claim 1, wherein the touch key circuit comprises a touch chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, a first triode and a first electrostatic protection diode;
a pin Q of the touch chip is connected to one end of the first resistor and one end of the second resistor, the other end of the first resistor is grounded, the other end of the second resistor is connected to a base of the first triode, a collector of the first triode is connected to a fifth pin of the third connector, an emitter of the first triode is grounded, a pin I of the touch chip is connected to one end of the first capacitor and one end of the third resistor, the other end of the first capacitor is grounded, the other end of the third resistor is connected to one end of the first electrostatic protection diode and the fourth pin of the first connector, the other end of the first electrostatic protection diode is grounded, an AHLB pin of the touch chip is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to the fourth pin of the third connector, one end of the fifth resistor and one end of the second capacitor, One end of the third capacitor is connected with a VDD pin of the touch chip, the other ends of the second capacitor and the third capacitor are both grounded, and the other end of the fifth resistor is connected with a TOG pin of the touch chip.
4. The key device of claim 3, wherein the backlight module control circuit comprises a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a second triode, and a second ESD diode;
one end of the sixth resistor is connected with a second pin of the third connector, one end of the seventh resistor is connected with a fourth pin of the third connector, the other end of the sixth resistor and the other end of the seventh resistor are both connected with a first pin and a second pin of the second connector, a third pin and a fourth pin of the second connector are both connected with a collector of the second triode and one end of the eighth resistor, the other end of the eighth resistor and an emitter of the second triode are both grounded, a base of the second triode is connected with one end of the ninth resistor, the other end of the ninth resistor is connected with one end of the tenth resistor, the second electrostatic protection diode and the first pin of the third connector, and the other end of the tenth resistor and the other end of the second electrostatic protection diode are both grounded.
5. The key device according to claim 2, wherein the touch PCB is connected to the interposer through FPC wires.
6. The key device as claimed in claim 1, wherein the backlight module is connected to the interposer via an FPC cable.
7. The key device according to claim 5 or 6, wherein the FPC wire is wrapped with a single-sided conductive single-adhesive aluminum foil.
8. The conference tablet computer is characterized by comprising a shell, a mainboard and a screen, wherein the shell comprises a front frame and a rear shell, the front frame is provided with a window matched with the size of the screen, the screen is arranged in the window, the front frame and the rear shell are buckled through a buckling structure, the mainboard is arranged on a support of a screen backboard, the key device according to any one of claims 1-7 is arranged in the front frame, and the key device is electrically connected with the mainboard.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010064854.1A CN111182680B (en) | 2020-01-20 | 2020-01-20 | Button device and conference are dull and stereotyped |
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| CN202010064854.1A CN111182680B (en) | 2020-01-20 | 2020-01-20 | Button device and conference are dull and stereotyped |
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| CN111182680B true CN111182680B (en) | 2021-11-02 |
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| CN112397034A (en) * | 2020-11-02 | 2021-02-23 | 深圳市创维群欣安防科技股份有限公司 | Dimming control circuit and display device |
| CN113870466A (en) * | 2021-10-20 | 2021-12-31 | 广东好太太智能家居有限公司 | Intelligent lock inductive unlocking method and device and storage medium |
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| Publication number | Publication date |
|---|---|
| CN111182680A (en) | 2020-05-19 |
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Effective date of registration: 20210723 Address after: 14 / F, block a, Skyworth building, Gaoxin South 1st Road, Nanshan District, Shenzhen, Guangdong 518000 Applicant after: SHENZHEN SKYWORTH DIGITAL TECHNOLOGY Co.,Ltd. Address before: No.1, Baolong Sixth Road, Baolong Industrial City, Longgang District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN SKYWORTH QUNXIN SECURITY TECHNOLOGY Co.,Ltd. |
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