CN208969663U - Electric terminal - Google Patents

Abstract

The utility model proposes a kind of novel electric terminal, it is pluggable using M.2 interface realization screen, detachably；M.2 interface it is small in size, it is pluggable and be suitable for transmission high speed MIPI signal；Technical scheme without the use of extracting on screen Shi Kecong host, turns back to when needing compared with the prior art, while can be directly integrated existing M.2 interface module reduction development cost.

Description

Electric terminal

Technical field

The utility model belongs to field of electronic device, in particular to the electric terminal of pluggable peripheral hardware.

Background technique

The screen of usual electronic equipment does not have pluggable characteristic, wishes the screen of electronic equipment in some applications It can connect when in use and remove such host independent operating in the case where being detached from screen when not in use.However existing In electronic equipment, the signal in SOC in MIPI bus is high speed signal, for the stability host and screen of signal transmission Between interface be all made of the fixed form of bayonet type, this sound construction signal stabilization but be not suitable for often plugging screen. It taking the mobile phone as an example, mobile phone screen is fixed by shell, and it is internal to be connect with mainboard by FPC flexible circuitry, in FPC flexible circuitry The connecting pin of mainboard is provided with bayonet coupling, bayonet coupling corresponding with the connector size, mobile phone are provided on mainboard It is linked together both after assembly by bayonet coupling, the few quilt of the bayonet coupling usually within the service life period of mobile phone It dismantles, therefore its influence in design without the concern for disassembly to interface and screen video signal.So existing screen The technology connecting with host not can solve the problem of interface plug, and when the technical problems to be solved in the utility model provides a kind of energy Electronic equipment, screen and the interface enough plugged.

Utility model content

The use of the new type provides the screen that a kind of electric terminal includes host and connect with host to solve above-mentioned technical problem Curtain；The screen is connect pluggablely by M.2 interface and host；M.2 the interface includes being used for transmission drawing for MiPi signal Foot；It further include the pin of the pin and initial screen for detecting screen plug signal.The usually described M.2 interface is used for The storage equipment of computer, especially M.2 solid state hard disk；M.2 and storage speed more frivolous relative to traditional SATA interface be more Fastly, transmission speed maximum compatible 4GB per second and its with pluggable characteristic.Therefore M.2 interface conduct is selected Video signal transmission interface is very suitable.

Preferably, the MIPI bus of the pin for being used for transmission MIPI signal and host connects.

Preferably, the host includes SOC, and MIPI signal output pin, the MIPI of the M.2 interface is arranged in the SOC Pin is connect with the MIPI signal output pin.

Preferably, the M.2 interface includes the pin for being used for transmission touching signals.

Preferably, the M.2 interface includes touching signals initialization pin.

Preferably, the M.2 interface includes the pin of the pin and ground connection for power supply.

Preferably, the M.2 interface includes the pin of error of transmission signal.

Preferably, the M.2 interface includes the pin for testing the pluggable screen state.

Preferably, the M.2 interface includes M.2 male connector interface or female interface.

The progress of the utility model compared with the prior art is that the M.2 interface that will be used to store equipment is used for transmission priming and sets Standby screen MIPI signal, M.2 the opering characteristic of electric apparatus of interface itself is suitable for plugging and is therefore had and can be inserted using the mobile device of the interface Pull out screen；So that screen can be removed when not needing screen allow host independent operating.M.2 pin number is more in interface simultaneously, It can with simultaneous transmission touching signals, error signal, test signal and to screen power.

Detailed description of the invention

Fig. 1 is electronic device module structural schematic diagram, wherein communication protocol when communicating comprising equipment with screen.

Fig. 2 is pluggable equipment M.2 interface pin structural schematic diagram.

Specific embodiment

Electronic equipment schematic diagram shown in referring to Fig.1, in order to which the brief and concise figure only represents technology relevant to invention Main points signal.Wherein electric terminal includes the host HOST and screen SC R connecting with host, which includes but is not limited to Mobile phone, laptop, PDA, mobile POS machine, tablet computer etc..

The screen SC R is connect pluggablely by M.2 interface and host HOST.M.2 the interface in the prior art The M.2 interface for being usually used in the storage equipment in laptop or desktop computer is identical, M.2 the transmission speed block small in size of interface And it is applicable to frequently plug.Here do not have between the M.2 interface between interface and host HOST using additional fixation Interface, the fixed effect for relying solely on interface itself are fixed.When not using screen SC R, M.2 interface can be from host It is taken off on HOST, so that host HOST independent operating reduces power consumption.It is only needed when needing screen SC R by screen SC R Upper corresponding M.2 interface turns back on host HOST.M.2 interface on screen SC R can be pin end or female connector, accordingly Screen SC R on M.2 interface can be female connector or pin end.It M.2 can be according to need between the interface and host HOST With hot plug or cold plug is designed to, the hot plug not only needs hardware hot plug design also software to be needed to be adapted to Design.

M.2 the interface can transmit various communications protocols.Including being used for transmission the MIPI agreement of vision signal, be used for The I2C agreement for transmitting screen SCR touch signal, the screen SC R resetting agreement SCR_INT for initial screen SCR state are used In detection screen SC R whether the detection protocol SRC_ID of grafting.

The screen SC R includes LCD screen, OLED screen, electronic paper screen, liquid crystal dot matrix screen etc., and screen SC R is by host HOST driving is for showing the information in host HOST, while screen SC R can be handed over for interacting offer touch, key vibration etc. Mutual feedback function.Including in the host HOST includes processor, memory, GPU, wireless communication chips in SOC described in SOC Deng the device inside above-mentioned SOC is communicated by MIPI bus protocol.Vision signal in SOC passes through the M.2 interface driver screen Curtain SCR.

M.2 interface is only physical interface, and the agreement transmitted on interface can be reset according to demand, is M.2 connect Mouthful pin in circuit again with respective protocol map pins, such as MIPI pin, I2C pin CPA pin etc..Here also The pin of test power supply can be reserved.

It is above-mentioned in a word M.2 interface to be used for screen SC R connect-disconnect structure to be utilized M.2 interface structure compact, suitable for plug The opering characteristic of electric apparatus, simultaneously because M.2 interface is therefore mature existing interface is able to use the integrated reduction fee to develop of existing module With.

Referring to shown in Fig. 2, techniques described above scheme is according to realizing to apply is having pluggable screen SC R electronic equipment Screen SC R connecting-disconnecting interface, M.2 connection pin in interface is by redesigning arrangement to adapt to the screen of transmission mobile equipment SCR signal.M.2 interface includes that 44 pins are respectively labeled as 1-44 altogether in figure.Wherein pin 1 is for detecting screen SC R's Plug signal is for exporting LCD_ID(On-Screen Identification code) signal, the SOC recognizes after detecting the LCD_ID signal For screen SC R grafting.

SOC detect LCD_ID signal can by and initial screen SCR pin 35,34 send TOUCH_RST_ L (touch-control reset signal), TOUCH_INT_L(touch-control initializing signal), while also can send LCD_RST by pin 32 and reset Signal is to initial screen SCR liquid crystal display systems.The screen SC R touching signals are transmitted by pin 37,38, are drawn Foot 36,37 transmits I2C agreement, respectively corresponds as I2C_SDA_TP signal and I2C_SCL_TP signal.

Pin 3 to 16 is used for transmission MIPI bus protocol signal, the pin and host for being used for transmission MIPI signal The MIPI bus of HOST connects, and the SOC has and removes remaining pin other than pin 5,8,11,14 in the pin 3-16 For MIPI signal input output end of connection, the vision signal shown on the LCD passes through above-mentioned pin and transmits.According to MIPI agreement, the MIPI signal include MIPI_TX0_D0P, MIPI_TX0_D0N, MIPI_TX0_D1P, MIPI_TX0_D1N, MIPI_TX0_CLKP、MIPI_TX0_CLKN、MIPI_TX0_D2P、MIPI_TX0_D2N、MIPI_TX0_D3P、MIPI_TX0_ D3N, wherein having D0 to D3 printed words is data-signal, it is clock signal with CLK printed words.

Pin 38 connects level TP_IOVCC, corresponding pin 2,5,8,11,14,17,44,31 is grounded for powering. 18-20,21-23 connection reference level signal VREG_DISP_N5V pass through capacitor C1, C2 ground connection simultaneously with stabilization signal, pin 30 are used for transmission error signal ERR_FG.

Pin 33,29,28,27 is used for transmission test signal TP_3P3, LCD_3P3, VREG_AVDD_LCD, LCD_1P8. Pin 24-26 is used for transmission signal AVDD_EN, SCTRL, MDP_VSYNC_P.

A kind of embodiment that the layout of above-mentioned M.2 interface only designs according to the actual situation, it is clear that art technology Personnel can also redesign the pin layout and function definition according to specific requirements.

Claims (9)

1. electric terminal, which is characterized in that including host and the screen being connect with host；The screen passes through M.2 interface and master Machine connects pluggablely；M.2 the interface includes the pin for being used for transmission MIPI signal；It further include for detecting screen plug letter Number pin and initial screen pin.

2. electric terminal as described in claim 1, which is characterized in that the pin for being used for transmission MIPI signal and host The connection of MIPI bus.

3. electric terminal as claimed in claim 2, which is characterized in that the host includes SOC, and the SOC setting MIPI believes Number output pin, the MIPI pin of the M.2 interface are connect with the MIPI signal output pin of the SOC.

4. electric terminal as described in claim 1, which is characterized in that the M.2 interface includes being used for transmission touching signals Pin.

5. electric terminal as claimed in claim 4, which is characterized in that the M.2 interface includes touching signals initialization pin.

6. electric terminal as described in claim 1, which is characterized in that the M.2 interface include for power supply pin and The pin of ground connection.

7. electric terminal as described in claim 1, which is characterized in that the M.2 interface includes the pin of error of transmission signal.

8. electric terminal as described in claim 1, which is characterized in that the M.2 interface includes described pluggable for testing The pin of screen state.

9. such as the described in any item electric terminals of claim 1-8, which is characterized in that the M.2 interface includes M.2 male connector interface Or female interface.