CN201562444U

CN201562444U - Display with mobile phone charging function

Info

Publication number: CN201562444U
Application number: CN2009203121892U
Authority: CN
Inventors: 张玮
Original assignee: Tianjin Samsung Electronics Display Co Ltd
Current assignee: Tianjin Samsung Electronics Co Ltd
Priority date: 2009-10-10
Filing date: 2009-10-10
Publication date: 2010-08-25
Anticipated expiration: 2019-10-10

Abstract

The utility model provides a display with charging function for mobile phone, which comprises a main control chip; the main control chip is provided with a circuit board for controlling the mobile phone charging function, the circuit board consists of a GPIO interface, a grounding capacitor, a capacitor, a first triode, a second triode, three resistors and a field effect tube; one end of the GPIO interface is connected with the main control chip and the other end with the first triode and the second triode by the ground capacitor orderly, thereby forming a dual-triode gating circuit. Three resistors for current-limiting and voltage-dividing are connected with the loop of two triodes respectively; the power supply is connected with two electrodes of the triodes and connected with the Gate electrode and the S electrode of the field effect tube by the capacitor orderly. The display has the advantages of realizing the purpose of charging the mobile phone with the high-quality power by the power supply of the display at any time, avoiding the adverse influence to the mobile phone during charging, thus operating conveniently and using practically.

Description

A kind of display with mobile phone charging function

Technical field

The utility model relates to a kind of display, especially a kind of display with mobile phone charging function.

Background technology

At present, the display of selling on the market, great majority do not possess external mobile phone charging function, this makes many users in using the computer or television process, running into mobile phone does not have the situation of electricity need seek the external charging power supply, bother very much, and the charge power supply place has with a certain distance from display sometimes, want to continue to use very inconvenience of phone during charging, though now a lot of computing machines and display all provide usb connecting port, but because the requirement of the standard of USB own, the size of its power supply capacity can be subjected to connection device what and power consumption size and produce unsettled variation.This variation may produce potential harmful effect to cell-phone charging.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of display with mobile phone charging function.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A kind of display with mobile phone charging function, comprise the main control chip, have additional the circuit board that is used to control mobile phone charging function on the main control chip, circuit board is by GPIO port (General Purpose Input Output, universal input and output port), direct earth capacitance, electric capacity, first triode, second triode, three resistance and field effect transistor are formed, GPIO port one end is connected with the main control chip, the other end by direct earth capacitance successively with first triode, second triode is connected, form a duotriode gating circuit, three resistance that are used for the current limliting dividing potential drop are connected respectively to the loop of two triodes, and power supply is connected respectively to the triode two-stage and is connected to the Gate utmost point (grid) and the S utmost point (source electrode) of field effect transistor by electric capacity successively.

The beneficial effects of the utility model are:

1, above-mentioned display with mobile phone charging function by the circuit board of setting up on the main control chip that is used to control mobile phone charging function, has realized utilizing display power supply to be the function of cell-phone charging at any time;

2, by data line the external port (USB interface) that mobile phone and display carry is connected,, avoids in the charging process mobile phone being caused harmful effect for the cell-phone charging process provides stable high quality power supply, simple to operation, practical.

Description of drawings

Fig. 1 is a kind of circuit board line annexation synoptic diagram with display of mobile phone charging function that the utility model provides.

Among the figure: 1-GPIO port C1-direct earth capacitance C2-electric capacity Q1-first triode

The Q2-second triode R1-first resistance R 2-second resistance

R3-the 3rd resistance 2-field effect transistor

Embodiment

For further specifying the utility model, existing conjunction with figs. is described in detail:

As shown in Figure 1, described display with mobile phone charging function, comprise the main control chip, have additional the circuit board that is used to control mobile phone charging function on the main control chip, circuit board is by the GPIO port one, direct earth capacitance C1, capacitor C 2, the first triode Q1, the second triode Q2, first resistance R 1, second resistance R 2, the 3rd resistance R 3 and field effect transistor 2 are formed, GPIO port one one end is connected with the main control chip, the other end by direct earth capacitance C1 successively with the first triode Q1, the second triode Q2 is connected, form a duotriode gating circuit, three resistance that are used for the current limliting dividing potential drop are connected respectively to the loop of two triodes, power supply is connected respectively to the triode two-stage and is connected to the Gate utmost point and the S utmost point of field effect transistor 2 successively by capacitor C 2, and described field effect transistor 2 is the chip of model SI3443BDV.

Whole principle of work is summarized as follows:

When using described display with mobile phone charging function, mobile phone is connected to the display charging port, be on the USB interface that carries of display, utilize display self electric power starting charge function, the GPIO port one that draw from the display main control chip this moment is controlled charging circuit as control port, and the height by the voltage on this port line changes and opens and closes the charging circuit that is used for cell-phone charging.As shown in Figure 1, GPIO part gating then with triode Q1 gating, is followed triode Q2 gating, make three resistance R 1 in rear end, R2, the loop works that R3 forms, 2 work of rear end field effect transistor, when GPIO end is controlled when becoming high level, Gate is high level very, field effect transistor 2 not conductings, so+output of 5v_USB non-transformer; When GPIO is controlled when becoming low level, the Gate of field effect transistor 2 is low level very, field effect transistor 2 conductings, and the primary power of+5v_MAIN is transported to+the 5v_USB end through the control and the arrangement of whole interface circuit, supplies with cell-phone charging.

The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. display with mobile phone charging function, comprise the main control chip, it is characterized in that: have additional the circuit board that is used to control mobile phone charging function on the main control chip, circuit board is by the GPIO port, direct earth capacitance, electric capacity, first triode, second triode, three resistance and field effect transistor are formed, GPIO port one end is connected with the main control chip, the other end by direct earth capacitance successively with first triode, second triode is connected, form a duotriode gating circuit, three resistance that are used for the current limliting dividing potential drop are connected respectively to the loop of two triodes, and power supply is connected respectively to the triode two-stage and is connected to the Gate utmost point and the S utmost point of field effect transistor by electric capacity successively.