CN208507112U - Display module identification device and display equipment - Google Patents
Display module identification device and display equipment Download PDFInfo
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- CN208507112U CN208507112U CN201821293263.6U CN201821293263U CN208507112U CN 208507112 U CN208507112 U CN 208507112U CN 201821293263 U CN201821293263 U CN 201821293263U CN 208507112 U CN208507112 U CN 208507112U
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Abstract
The utility model discloses a kind of display module identification device and display equipment, which includes: master control borad；Mould group interface, one end are connect with master control borad, and the other end is for accessing display module；Mould group interface includes supply pin, grounding leg and enabled foot, and the power output end connection of supply pin and master control borad enables the control terminal connection of foot and master control borad；Mould group identification circuit, first input end with supply pin for connecting, and for connecting with grounding leg, output end is connect the second input terminal with the common end of the control terminal of enabled foot and master control borad；Wherein, mould group identification circuit is used to export corresponding identification signal to enabled foot according to the display module type of access；Master control borad is used to export corresponding driving signal to display module according to the identification signal detected on enabled foot.The utility model solves in the design of display module identification, needs to increase dedicated identification pin, so that the problem of interface pin number increases, and FPC or pcb board area increase.
Description
Technical Field
The utility model relates to a show technical field, in particular to display module assembly recognition device and display device.
Background
Currently, in the design of display module identification, a dedicated pin is mostly added to an interface for connecting a main control board and a display module, and a corresponding peripheral identification circuit is added to the module for identification. This kind of mode will make interface pin count increase, leads to module FPC or PCB circuit to increase, and the wiring degree of difficulty increases, and the area increases.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a display module assembly recognition device and display device aims at solving in the design of display module assembly discernment, need increase dedicated discernment pin for interface pin number increases, and FPC or PCB face area increase's problem.
In order to achieve the above object, the utility model provides a display module assembly recognition device, display module assembly recognition device includes:
a main control board;
one end of the module interface is connected with the main control board, and the other end of the module interface is used for accessing a display module; the module interface comprises a power supply pin, a grounding pin and an enabling pin, the power supply pin is connected with the power supply output end of the main control board, and the enabling pin is connected with the control end of the main control board;
the module identification circuit is provided with a first input end, a second input end and an output end, the first input end of the module identification circuit is used for being connected with the power supply pin, the second input end of the module identification circuit is used for being connected with the grounding pin, and the output end of the module identification circuit is connected with the common end of the enabling pin and the control end of the main control board; wherein,
the main control board is used for outputting an enabling signal to the accessed display module when the display module is powered on so as to drive the display module to be powered on to work;
the module identification circuit is used for outputting a corresponding identification signal to the enabling pin according to the type of the accessed display module;
the main control board is further used for outputting corresponding driving signals to the display module according to the identification signals detected on the enabling pins.
Optionally, a main controller and a power supply are arranged on the main control board, a control end of the main controller is the control end of the main control board, and the power supply and the main controller are the power output end of the main control board.
Optionally, the module interface is any one of an MCU, an SPI, and an RGB interface.
Optionally, the module identification circuit includes a first resistor, a first end of the first resistor is a first input end of the module identification circuit, and a second end of the first resistor is an output end of the module identification circuit.
Optionally, the module identification circuit includes a second resistor, a first end of the second resistor is a second input end of the module identification circuit, and a second end of the second resistor is an output end of the module identification circuit.
Optionally, the resistances of the first resistor and the second resistor are greater than or equal to 10K ohms.
Optionally, the display module identification device further includes a PCB, and the module identification circuit and the module interface are disposed on the PCB.
Optionally, the display module identification device further comprises an FPC board, and the module identification circuit and the module interface are disposed on the FPC board.
The utility model discloses still a display device, reach as above including the display module assembly recognition device, the display module assembly passes through display module assembly recognition device's module interface with display module assembly recognition device's main control board is connected.
Optionally, the display module includes a driving chip and a display panel, the driving chip is connected to the display panel, and the driving chip is configured to drive the display panel to operate when receiving the driving signal output by the main control board.
The utility model discloses display module assembly recognition device is through setting up main control board, module interface and module identification circuit, wherein, the one end and the main control board of module interface are connected, the other end is used for inserting display module assembly, the main control board exports enable signal to the display module assembly who inserts through the module interface when last electricity, with electric work on the drive display module assembly, and according to the display module assembly type that inserts through module identification circuit, export the identification signal that corresponds to the enable foot of display module assembly interface, so that the main control board, according to detecting the corresponding drive signal of identification signal output on the enable foot CS extremely display module assembly. The utility model discloses need not to increase new interface, utilize the original enable foot in the module interface, accomplish the type discernment that the display module assembly that inserts on the module interface inserts to solved in the design of display module assembly discernment, need increase dedicated discernment pin, make interface pin number increase, lead to the circuit in the module interface to increase, the wiring degree of difficulty of the FPC or the PCB board that bear the module interface increases, and the problem that FPC or PCB face are amazing. The utility model discloses an existing enabling foot CS discerns the display module assembly that the module interface inserts, need not to increase dedicated discernment pin, is favorable to practicing thrift the interface resource of main control board to because FPC or PCB area can not increase, can not destroy ultra-thin flat panel liquid crystal TV's whole outward appearance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of functional modules of an embodiment of a display module identification apparatus applied to a display device according to the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the display module identification device of the present invention;
fig. 3 is a schematic circuit diagram of another embodiment of the display module identification device of the present invention;
fig. 4 is a schematic circuit diagram of another embodiment of the display module identification device of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Main control board | 100 | Display module |
| 20 | Die setMouth piece | R1 | A first resistor |
| 30 | Module identification circuit | R2 | Second resistance |
| CS | Enable foot | GND | Grounding pin |
| VDD | Power supply foot |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a display module identification device is applicable to display device such as TV set, cell-phone, computer, and the following describes for convenient the description to the liquid crystal electricity is the example, explains.
Display devices such as televisions, mobile phones, and computers generally include a main control board, a power board, and a display module. Because the difference of producer, the display module's display parameter, working parameter such as driving voltage, gamma value and colour can be different, therefore the main control board need discern the display module type of access to according to the access display module type, output corresponding display module parameter setting signal to display module. Currently, in the design of display module identification, a dedicated pin is mostly added to an interface for connecting a main control board and a display module, and a corresponding peripheral identification circuit is added to the module for identification. This kind of mode will make interface pin count increase, leads to module FPC or PCB circuit to increase, and the wiring degree of difficulty increases, and the area increases.
Referring to fig. 1 to 4, in an embodiment of the present invention, the identification apparatus for a display module 100 includes:
a main control board 10;
a module interface 20, one end of which is connected to the main control board 10 and the other end of which is used for accessing the display module 100; the module interface 20 comprises a power pin VDD, a ground pin GND and an enable pin CS, the power pin VDD is connected with a power output end of the main control board 10, and the enable pin CS is connected with a control end of the main control board 10;
the module identification circuit 30 is provided with a first input end, a second input end and an output end, the first input end of the module identification circuit 30 is used for being connected with the power pin VDD, the second input end of the module identification circuit 30 is used for being connected with the grounding pin GND, and the output end of the module identification circuit 30 is connected with the common end of the enabling pin CS and the control end of the main control board 10; wherein,
the main control board 10 is configured to output an enable signal to the accessed display module 100 when the display module 100 is powered on, so as to drive the display module 100 to power on;
the module identification circuit 30 is configured to output a corresponding identification signal to the enable pin CS according to the type of the accessed display module 100;
the main control board 10 is further configured to output a corresponding driving signal to the display module 100 according to the detected identification signal on the enabling pin CS.
In this embodiment, the main control board 10 decodes the received video signal, and then outputs the decoded video signal to the display module 100. The main control board 10 is generally integrated with a main controller, i.e., a CPU, a memory, a display core, a memory, and a chip for implementing other functions such as audio output. The main controller is in communication connection with the display module 100 through the module interface 20, and controls the display module 100 to operate, for example, when the lcd tv is powered on, the main controller 10 outputs an enable signal of high level or low level, and outputs the enable signal to the display module 100 through the enable pin CS of the module interface 20, so as to control the display module 100 to be powered on. In this embodiment, the main control board 10 may be selected to output a high-level enable signal to control the display module 100 to power on.
In some embodiments, the display module 100 identification apparatus further includes a power board for converting the ac power voltage into a dc voltage suitable for the operation of the main control board 10 and the display module 100, wherein the dc voltage outputted to the display module 100 is outputted to the display module 100 through the power pin VDD of the module interface 20. The main control board 10 may further output a backlight enable signal and a brightness adjustment signal to the display module 100 through the module interface 20 to drive the display module 100 to operate.
In an optional embodiment, the display module 100 recognition apparatus further includes a PCB or FPC board, and the module recognition circuit 30 and the module interface 20 are disposed on the PCB; alternatively, the module identification circuit 30 and the module interface 20 are disposed on the FPC board.
The module interface 20 includes a plurality of pins, such as a power pin VDD, a ground pin GND, a data transmission pin, a display signal input pin, and the like. The module interface 20 may be provided on a PCB board or on an FBC board.
In this embodiment, the module identification circuit 30 may be set according to the type of the accessed display module 100, so as to output different identification detection signals to the main control board 10 according to the accessed display module 100, in the actual application process, one end of the module identification circuit 30 may be set at the ground pin GND or the power pin VDD of the module interface 20, or not connected to the module interface 20, and the other end thereof is connected to the enable pin CS of the module interface 20, that is, connected to the main control board 10 through the enable pin CS. For example, in a liquid crystal television with the same size, the main control board 10 can be adapted to three types of display modules 100, namely, the display module 100A, the display module 100B and the display module 100C. If the display module 100A is required to be applied during production, the module identification circuit 30 may be serially connected between the power pin VDD and the enable pin CS of the module interface 20. Thus, after the display module 100A and the main control board 10 are assembled and powered on, the main control board 10 outputs a high-level enable signal to the display module 100A to control the power on operation of the display module 100A. Subsequently, the main control board 10 can read back the module identification signal on the enable pin CS, the module identification circuit 30 converts the dc power accessed through the power pin VDD into a high-level module identification signal, and outputs the high-level module identification signal to the main control board 10 through the enable pin CS, the main control board 10 identifies the display module 100A according to the high-level module identification signal, and configures the working parameters of the display module 100A, such as the driving voltage, the gamma value, and the color, to the display module 100A, thereby completing the power-on initialization of the display module 100.
If the display module 100B is required to be applied, the module identification circuit 30 may be serially connected between the ground pin GND and the enable pin CS of the module interface 20. Thus, after the display module 100B and the main control board 10 are assembled and powered on, the main control board 10 outputs a high-level enable signal to the display module 100B to control the power on operation of the display module 100B. Subsequently, the main control board 10 can read back the module identification signal on the enable pin CS, the module identification circuit 30 outputs the low-level module identification signal accessed through the ground pin GND to the main control board 10 through the enable pin CS, the main control board 10 identifies the display module 100B according to the low-level module identification signal, and configures the driving voltage, the gamma value, the color and other working parameters of the display module 100B to the display module 100B, thereby completing the power-on initialization of the display module 100.
If the display module 100C is required to be applied, the module identification circuit 30 may be left vacant. Thus, after the display module 100C and the main control board 10 are assembled and powered on, the main control board 10 outputs a high-level enable signal to the display module 100C to control the power on of the display module 100C. Subsequently, the main control board 10 may read back the signal on the enable pin CS, and since the module identification circuit 30 is empty at this time, there is no module identification signal of high level or low level on the enable pin CS, so that it can be determined that the accessed display module 100C is identified, and then the working parameters of the display module 100C, such as the driving voltage, the gamma value, and the color, are configured to the display module 100C, thereby completing the power-on initialization of the display module 100.
The utility model discloses display module assembly 100 recognition device is through setting up main control board 10, module interface 20 and module identification circuit 30, and wherein, module interface 20's one end is connected with main control board 10, and the other end is used for inserting display module assembly 100, and main control board 10 exports enable signal to the display module assembly 100 of inserting through module interface 20 when going up to work on the drive display module assembly 100. And the module identification circuit 30 outputs a corresponding identification signal to the enable pin CS of the interface 20 of the display module 100 according to the type of the accessed display module 100, so that the main control board 10 outputs a corresponding driving signal to the display module 100 according to the detected identification signal on the enable pin CS. The utility model discloses need not to increase new interface pin, utilize original enable foot CS in the module interface 20, accomplish the type discernment that the display module assembly 100 that inserts goes up the module interface 20 inserts, thereby solved in the design of display module assembly 100 discernment, need increase dedicated discernment pin, make the interface pin number increase, the circuit that leads to in the module interface 20 increases, and then the wiring degree of difficulty that leads to the FPC or the PCB board that bear module interface 20 increases, and FPC or PCB board area increase problem. The utility model discloses an existing enabling foot CS discerns the display module assembly 100 that module interface 20 inserts, need not to increase dedicated discernment pin, is favorable to practicing thrift the interface resource of main control board 10 to because FPC or PCB area can not increase, can not destroy ultra-thin flat liquid crystal TV's whole outward appearance.
Referring to fig. 1 to 4, in an alternative embodiment, the module interface 20 is any one of an MCU, an SPI, and an RGB interface.
In this embodiment, the module interface 20 may be implemented by an SPI interface or an RGB interface, and may also be implemented by an interface having an enable pin CS, such as an MCU. Multiplexing of the enable pin CS of the module interface 20 is adopted, so that interface resources of the main control board 10 can be controlled, and increase of pins of the module interface 20 can be avoided, so that the area of an FPC or PCB board for installing the module interface 20 is increased, and the overall appearance of the ultra-thin flat panel liquid crystal television is damaged.
Referring to fig. 1 to 4, in an alternative embodiment, the module identification circuit 30 includes a first resistor R1, the first terminal of the first resistor R1 is the first input terminal of the module identification circuit 30, the first resistor R1 is the second terminal of the first resistor R1 is the output terminal of the module identification circuit 30.
Alternatively, the module identification circuit 30 includes a second resistor R2, the first end of the second resistor R2 is the second input end of the module identification circuit 30, and the second end of the second resistor R2 is the output end of the module identification circuit 30.
In this embodiment, the first resistor R1 and the second resistor R2 are a pull-up resistor and a pull-down resistor, respectively, the pull-up resistor may be serially connected between the power pin VDD and the enable pin CS, and the pull-down resistor may be serially connected between the ground pin GND and the enable pin CS, specifically configured according to the type of the display module 100 connected to the module interface 20, to output the corresponding module identification signal. For example, when the main control board 10 is configured with three display modules 100 of the display module 100A, B, C, when the module interface 20 is connected to the display module 100A, the pull-up resistance is increased at the enable pin CS, when the module interface 20 is connected to the display module 100B, the pull-down resistance is increased at the enable pin CS, and when the module interface 20 is connected to the display module 100C, the external resistance is not increased. With such a configuration, the main control board 10 can read the high/low level of the enable pin CS, and send the driving parameters required by the display module 100A when the high level signal of the enable pin CS is read; when reading the low level signal of the enable pin CS, sending the driving parameters required by the display module 100B; otherwise, the driving parameters required by the display module 100C are sent, so that the main control board 10 can distinguish between the display modules 100 of different types, and is compatible with the display modules 100 of different types, and the corresponding driving parameters are set and output according to the types of the display modules 100. Furthermore, the utility model discloses only need set up a pull-up resistance, perhaps drop-down resistance, perhaps do not connect the resistance, can realize the discernment of display module assembly 100 type, simple structure easily realizes, can also practice thrift display device's manufacturing cost simultaneously to and be favorable to reducing the lead wire, thereby reduce the wiring degree of difficulty of PCB board or FPC board.
Referring to fig. 1 to 4, in the above embodiment, the resistances of the first resistor R1 and the second resistor R2 are greater than or equal to 10K ohms so as to reduce the leakage current after the display module 100 is powered on.
The utility model discloses still provide a display device, display device includes display module assembly 100 and as above display module assembly recognition device. The detailed structure of the display module identification device can refer to the above embodiments, and is not described herein again; it can be understood that, because the utility model discloses used above-mentioned display module assembly recognition device among the display device, consequently, the utility model discloses display device's embodiment includes the whole technical scheme of the whole embodiments of above-mentioned display module assembly recognition device, and the technological effect that reaches is also identical, no longer gives unnecessary details here.
Referring to fig. 1 to 4, the display module 100 is connected to a main control board 30 of the display module identification device through a module interface 20 of the display module identification device.
Further, the display module 100 includes a driving chip and a display panel, the driving chip is connected to the display panel, and the driving chip is configured to drive the display panel to work when receiving the driving signal output by the main control board 10.
In this embodiment, the driving chip is in communication connection with the main control board through the module interface, and receives the driving signal output by the main control board 10 to drive the display panel to work. The display panel may be a liquid crystal display panel.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. The utility model provides a display module assembly recognition device which characterized in that, display module assembly recognition device includes:
a main control board;
one end of the module interface is connected with the main control board, and the other end of the module interface is used for accessing a display module; the module interface comprises a power supply pin, a grounding pin and an enabling pin, the power supply pin is connected with the power supply output end of the main control board, and the enabling pin is connected with the control end of the main control board;
the module identification circuit is provided with a first input end, a second input end and an output end, the first input end of the module identification circuit is used for being connected with the power supply pin, the second input end of the module identification circuit is used for being connected with the grounding pin, and the output end of the module identification circuit is connected with the common end of the enabling pin and the control end of the main control board; wherein,
the main control board is used for outputting an enabling signal to the accessed display module when the display module is powered on so as to drive the display module to be powered on to work;
the module identification circuit is used for outputting a corresponding identification signal to the enabling pin according to the type of the accessed display module;
the main control board is further used for outputting corresponding driving signals to the display module according to the identification signals detected on the enabling pins.
2. The display module identification device of claim 1, wherein a main controller and a power supply are disposed on the main control board, the control terminal of the main controller is the control terminal of the main control board, and the power supply is the power output terminal of the main control board.
3. The device as claimed in claim 1, wherein the module interface is any one of MCU, SPI and RGB interfaces.
4. The display module identification device of claim 1 wherein the module identification circuit comprises a first resistor, a first terminal of the first resistor being a first input terminal of the module identification circuit, and a second terminal of the first resistor being an output terminal of the module identification circuit.
5. The display module identification device of claim 4, wherein the module identification circuit comprises a second resistor, a first terminal of the second resistor is a second input terminal of the module identification circuit, and a second terminal of the second resistor is an output terminal of the module identification circuit.
6. The display module identification device of claim 5 wherein the first resistor and the second resistor have a resistance greater than or equal to 10K ohms.
7. The display module identification device according to any one of claims 1 to 6, wherein the display module identification device further comprises a PCB board, and the module identification circuit and the module interface are disposed on the PCB board.
8. The display module identification device according to any one of claims 1 to 6, wherein the display module identification device further comprises an FPC board, the module identification circuit and the module interface being disposed on the FPC board.
9. A display device, comprising a display module and the display module identification apparatus according to any one of claims 1 to 8, wherein the display module is connected to a main control board of the display module identification apparatus through a module interface of the display module identification apparatus.
10. The display device according to claim 9, wherein the display module comprises a driving chip and a display panel, the driving chip is connected to the display panel, and the driving chip is configured to drive the display panel to operate when receiving a driving signal output by the main control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821293263.6U CN208507112U (en) | 2018-08-10 | 2018-08-10 | Display module identification device and display equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821293263.6U CN208507112U (en) | 2018-08-10 | 2018-08-10 | Display module identification device and display equipment |
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| CN208507112U true CN208507112U (en) | 2019-02-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339987A (en) * | 2021-04-07 | 2021-09-03 | 宁波奥克斯电气股份有限公司 | Air conditioner display panel identification circuit and method and air conditioner indoor unit |
| CN113539199A (en) * | 2020-04-21 | 2021-10-22 | 张焕乡 | Pray for blessing lamp device with dual-purpose panel display function |
-
2018
- 2018-08-10 CN CN201821293263.6U patent/CN208507112U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113539199A (en) * | 2020-04-21 | 2021-10-22 | 张焕乡 | Pray for blessing lamp device with dual-purpose panel display function |
| CN113339987A (en) * | 2021-04-07 | 2021-09-03 | 宁波奥克斯电气股份有限公司 | Air conditioner display panel identification circuit and method and air conditioner indoor unit |
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