The compatible system of display device
Technical field
The utility model relates to a kind of display screen, a kind of compatible system of display device specifically.
Background technology
Mobile phone, as a kind of daily communication apparatus, extensively popularized, and compares old-fashioned landline telephone, and its travelling performance is self-evident.
Along with the fast development of mobile communication technology, the function of its mobile phone is also more and more, except can receiving and dispatching note and making a phone call, can also be surfed the Net with mobile phone, receiving and dispatching mail, listen to the music, plays games etc.And mobile phone is also from original button, develop into present touch.
At present, in embedded system of mobile phone, the driver of cell phone mainboard is not identical to the driving force of different display device (LCM), the driver and the display device (LCM) that is to say cell phone mainboard are one to one, same mainboard driver can't drive other dissimilar display device (LCM), so at first cell phone mainboard can be identified the display screen in display device, the type of differential display screen.
The method that existing technology is distinguished different display screens is, as shown in Figure 1: be generally that cell phone mainboard 1 is distinguished by the IC chip 2 in display device 14, wherein, have different IC chips 2 in dissimilar display device.That is to say, cell phone mainboard 1 is exactly by these different IC chips 2 of identification, the type of display screen in the display device 14 come to determine used, thus reach the purpose with the display screen compatibility.
If but same producer by implanting identical IC chip in dissimilar display device, by this mode of production, reduce production costs, at this moment cell phone mainboard just can not be distinguished these dissimilar display devices, if the display screen in the driver in cell phone mainboard and such display device is not complementary, mobile phone does not just reach desirable display effect yet.
The utility model content
The purpose of this utility model is to provide a kind of compatible system of display device, even implant identical IC chip in dissimilar display device, also can make dissimilar display screen be identified by the driver in mainboard, thereby reach optimal display effect.
To achieve these goals, the utility model has designed a kind of compatible system of display device, comprises display device, for identifying the mainboard of described display device display panel type, in described display device, comprises: power supply and bleeder circuit;
Described bleeder circuit one end is connected with described power supply, other end ground connection;
Wherein, described bleeder circuit possesses a voltage output end, and this voltage output end is connected to described mainboard; The output voltage of described voltage output end is relevant to described display panel type.
Compared with the existing technology, owing to being provided with bleeder circuit in display device, mainboard is the type that the voltage exported by bleeder circuit judges display screen in display device to execution mode of the present utility model.Even so implant the IC chip of same type in dissimilar display device, also can be identified by the driver in mainboard, thereby carry out compatibility with mainboard, make display screen reach optimal display effect.
Preferably, the second resistive module that described bleeder circuit comprises first resistive module, connects with described the first resistive module; Described voltage output end is between described the first resistive module and described the second resistive module; Described voltage output end is according to the change in resistance of described the first resistive module and described the second resistive module, and the voltage of output varying strength is to described mainboard, and described mainboard judges the type of display screen in described display device according to resulting voltage strength.Because mainboard is the type that the voltage strength exported by bleeder circuit judges display screen, and the voltage strength of bleeder circuit output to be resistance by changing the first resistive module and/or the second resistive module realize, so only need be adjusted the resistance of the resistive module in bleeder circuit when producing display device, can be identified by the driver in mainboard, and then carry out compatibility with mainboard.
In addition, in order to adapt to the needs in market, described the first resistive module and described the second resistive module can adopt respectively the structure of a resistance, perhaps adopt respectively the structure of at least two resistance series connection, or adopt respectively the structure of at least two resistance parallel connections, during production, can be selected according to the actual needs.
And having a resistance in described the first resistive module and/or described the second resistive module at least is adjustable resistance.By changing the resistance of this adjustable resistance, reach the magnitude of voltage that changes whole bleeder circuit output, and adjusted without the resistance to other resistance again, simplified the circuit design of whole bleeder circuit.
In addition, also comprise control chip IC in described display device, described IC is connected with described power supply; Described power supply is described IC power supply.By IC, can be controlled the miscellaneous part in display device.
In addition, also be provided with analog to digital converter ADC in described mainboard, described ADC is connected with the voltage output end of described bleeder circuit; Described ADC receives the voltage analog signal from bleeder circuit output, is uploaded in described mainboard after described voltage analog signal is converted to digital signal, and described mainboard judges the type of display screen in described display device according to concrete voltage value.Owing to being provided with ADC on mainboard, so the voltage analog signal of bleeder circuit output can be converted to digital signal, make mainboard can obtain a voltage value accurately, further strengthened the discrimination of mainboard to all types of display screens.
And, also be provided with memory in described mainboard, the driver of described each display panel type of memory stores, described mainboard, according to the voltage strength of described voltage output end output, calls corresponding display screen driver in described memory.Owing to being provided with memory in mainboard, and pre-install the driver of the display screen of most of types in memory, made mainboard to carry out compatibility with the display screen of a plurality of types.
In addition, the display screen in described display device can adopt LCDs.
The accompanying drawing explanation
Fig. 1 is the structural representation of the compatible system of existing display device;
The structural representation of the compatible system of the display device that Fig. 2 is the utility model the first execution mode;
Adopt the structural representation of resistance series connection in the compatible system of the display device that Fig. 3 is the utility model the second execution mode in each resistive module;
Adopt the structural representation of resistance parallel connection in the compatible system of the display device that Fig. 4 is the utility model the second execution mode in each resistive module;
The structural representation of the compatible system of the display device that Fig. 5 is the utility model the 3rd execution mode.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, each execution mode of the present utility model is explained in detail.Yet, persons of ordinary skill in the art may appreciate that in each execution mode of the utility model, in order to make the reader understand the application better, many ins and outs have been proposed.But, even without these ins and outs and the many variations based on following each execution mode and modification, also can realize each claim of the application technical scheme required for protection.
As shown in Figure 1, the compatible system of existing display device, comprise display device 14, and cell phone mainboard 1; Wherein in display device, be provided with IC chip 2 and power supply 15, power supply 15 is powered for IC chip 2, and cell phone mainboard 1 is distinguished by the IC chip 2 in display device.Wherein, dissimilar display device has different IC chips.That is to say, cell phone mainboard 1 is exactly by these different IC chips of identification, the type of the display screen come to determine used, thus reach the purpose with all kinds of display screen compatibilities.
If but same producer by implanting identical IC chip in dissimilar display device, by this mode of production, reduce production costs, at this moment cell phone mainboard just can not be distinguished these dissimilar display devices, if the display screen in the driver in cell phone mainboard and such display device is not complementary, mobile phone does not just reach desirable display effect yet.
The first execution mode of the present utility model relates to a kind of compatible system of display device, concrete structure as shown in Figure 2, comprise display device 3, for identifying the mainboard 4 of display device 3 display panel type, wherein the type of display screen specifically refers to the type of LCDs.In addition, also include power supply 5, bleeder circuit 6 and control chip IC11 in display device 3.One end of bleeder circuit 6 is connected with power supply 5, other end ground connection; IC chip 11 is connected with mainboard 4 with power supply 5 respectively, and power supply 5 is the IC11 power supply.
Wherein, bleeder circuit 6 possesses a voltage output end 7, and this voltage output end 7 connects mainboard 4, and the output voltage of voltage output end 7 is relevant to the type of display screen.
Specifically, the second resistive module 9 that bleeder circuit 6 comprises first resistive module 8, connects with the first resistive module 8, voltage output end 7 is between the first resistive module 8 and the second resistive module 9, voltage output end 7 is according to the change in resistance of the first resistive module 8 and the second resistive module 9, the voltage of output varying strength is to mainboard 4, and mainboard 4 is according to the type of display screen in resulting voltage strength judgement display device 3.
Owing to being provided with bleeder circuit in display device, mainboard is the type that the voltage strength exported by bleeder circuit judges display screen in display device, and the voltage strength of bleeder circuit output to be resistance by changing the first resistive module and the second resistive module realize.Even so implant the IC chip of same type in dissimilar display device, also can be identified by the driver in mainboard, thereby carry out compatibility with mainboard, make display screen reach optimal display effect.
In addition, also be provided with analog to digital converter ADC10 in mainboard 4, ADC10 is connected with the voltage output end 7 of bleeder circuit 6.Receive the voltage analog signal from bleeder circuit 6 output by ADC10, be uploaded in mainboard 4 after voltage analog signal is converted to digital signal, mainboard 4 can judge according to concrete voltage value the type of display screen in display device 3.Owing on mainboard 4, being provided with ADC10, so the voltage analog signal of bleeder circuit output can be converted to digital signal, make mainboard can obtain a voltage value accurately, further strengthened the discrimination of mainboard to all types of display screens.
In addition, it is worth mentioning that, the first resistive module 8 and the second resistive module 9 can adopt respectively single resistance, and the resistance of each resistance can the actual conditions when producing be selected.For example, in having adopted two dissimilar display devices of identical IC chip, implant a resistance R in first display device
1=R
2the bleeder circuit of=10K Ω, the total voltage U=5V of power supply, input to the voltage U in mainboard 4 by voltage output end after dividing potential drop
1=2.5V.Implant a resistance R in second display device
1=15K Ω, resistance R
2=10K Ω, the total voltage of power supply is still U=5V, after dividing potential drop, by voltage output end, inputs to the voltage U in mainboard
1=3V, and convert the voltage analog signal of two display device outputs to digital signal by ADC10, and be uploaded in mainboard, mainboard is according to U in two display devices
1actual magnitude of voltage, distinguish the type of two display screens.
In addition, in the present embodiment, also be provided with memory in mainboard 4, memory stores has the driver of all kinds of display screens, and mainboard 4, according to concrete voltage value, calls corresponding display screen driver in memory.Owing to being provided with memory in mainboard, and pre-install the driver of the display screen of most of types in memory, made mainboard to carry out compatibility with the display screen of a plurality of types.
The second execution mode of the present utility model relates to a kind of compatible system of display device.The second execution mode and the first execution mode are roughly the same, and main distinction part is: the structure of bleeder circuit, in the first embodiment, the first resistive module 8 and the second resistive module 9 are the forms that adopt single resistance.And in the utility model the second execution mode, as shown in Figure 3: the resistance that adopts respectively two series connection in the first resistive module 8 and the second resistive module 9.Perhaps, as shown in Figure 4, adopt respectively the resistance of two parallel connections in the first resistive module 8 and the second resistive module 9, can be selected the structure of bleeder circuit according to actual conditions when producing.Concrete dividing potential drop mode and the first embodiment are roughly the same, are just no longer set forth here.
The 3rd execution mode of the present utility model relates to a kind of compatible system of display device.The 3rd execution mode is to have done further improvement on the basis of the first execution mode, and main the improvement is: as shown in Figure 5, having a resistance at least in the first resistive module 8 and/or described the second resistive module 9 is adjustable resistance 12.By changing the resistance of this adjustable resistance 12, reach the magnitude of voltage that changes whole bleeder circuit output, and adjusted without the resistance to other resistance again, simplified the circuit design of whole bleeder circuit.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above are to realize specific embodiment of the utility model, and in actual applications, can do various changes to it in the form and details, and do not depart from spirit and scope of the present utility model.