CN216119515U - All-pass TFT screen control circuit - Google Patents
All-pass TFT screen control circuit Download PDFInfo
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- CN216119515U CN216119515U CN202122029036.0U CN202122029036U CN216119515U CN 216119515 U CN216119515 U CN 216119515U CN 202122029036 U CN202122029036 U CN 202122029036U CN 216119515 U CN216119515 U CN 216119515U
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Abstract
The utility model discloses an all-pass TFT screen control circuit, which belongs to the technical field of display screen control and comprises a mainboard interface circuit, an image processing chip connected with the mainboard interface circuit, a TFT screen driving circuit connected with the image processing chip, a booster circuit connected with the mainboard interface circuit and supplying power to the TFT screen driving circuit, and a memory connected with the TFT screen driving circuit and used for storing codes and parameters; the mainboard interface circuit is also connected with the power input port of the voltage conversion circuit. The all-pass TFT screen control circuit is simple in structure and convenient to use, on one hand, the TFT screen can be driven by the drive main board of the original OLED screen of the control circuit, the normal work of the connected TFT screen can be realized under the condition that the hardware of the OLED drive main board is not changed, the mode that the OLED main board is suitable for the TFT screen is provided, the system cost can be reduced, and the production efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of display screen control, and particularly relates to a full-through TFT screen control circuit.
Background
Compared with the conventional LCD, the OLED (Organic Light-Emitting Diode) employs an led array, which can emit Light by itself without backlight;
the TFT is used as an LCD display screen, does not emit light, and needs a backlight LED as a light emitting source to enable the TFT to emit light, so that a mainboard supporting the OLED screen can not be directly connected with the TFT screen normally;
specifications of an OLED screen connected with a mobile phone host, such as screen size, refresh rate and resolution, are not necessarily completely the same as specifications of a TFT screen, and the OLED screen and the TFT screen are mainly applied in the market of the mobile phone screen.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an all-pass TFT screen control circuit to solve the problem of screen matching between different specifications.
In order to achieve the purpose, the utility model provides the following technical scheme: a full-through TFT screen control circuit comprises a mainboard interface circuit, an image processing chip circuit connected with the mainboard interface circuit, a TFT screen driving circuit connected with the image processing chip circuit, a boosting circuit connected with the mainboard interface circuit and supplying power to the TFT screen driving circuit, and a memory connected with the TFT screen driving circuit and used for storing codes and parameters;
the mainboard interface circuit is also connected with the power input port of the voltage conversion circuit.
Preferably, the image processing chip circuit includes an image processing chip and peripheral circuits thereof.
Preferably, the booster circuit includes a booster chip for making the voltage of the output terminal higher than the voltage of the input terminal, and a peripheral circuit thereof.
Preferably, the serial memory circuit includes a memory chip and peripheral circuits thereof.
Preferably, the voltage conversion circuit includes a voltage conversion chip for converting an input voltage and outputting the converted input voltage, and a peripheral circuit thereof.
Preferably, the MIPI bus of the motherboard interface circuit is connected with the MIPI bus input end of the image processing chip circuit;
and the MIPI bus output end of the image processing chip circuit is connected with the TFT screen driving circuit.
Preferably, the motherboard interface circuit is further connected to the image processing chip circuit through a bus and an INT signal;
the image processing chip circuit is also connected to the TFT screen driving circuit through a bus and an INT signal;
the bus is of type I2C or SPI.
Preferably, the voltage at the output port of the voltage conversion circuit is 1.8V.
Preferably, the interface type of the memory is serial.
Preferably, the memory is connected to the TFT screen driving circuit through an SPI serial interface.
The utility model has the technical effects and advantages that: the all-pass TFT screen control circuit is simple in structure and convenient to use, on one hand, the drive main board of the original OLED screen of the control circuit can drive the TFT screen, so that the TFT screen can be connected and can normally work under the condition that the hardware of the OLED drive main board is not changed, the mode that the OLED main board is suitable for the TFT screen is provided, the brightness adjustment problem of the OLED is converted into the backlight adjustment of the TFT, the touch control of the TFT screen is converted into the touch control of the OLED, the system cost can be reduced, and the production efficiency is improved; on the other hand, the all-through structure is adopted, signals of the mainboard are processed to support TFT screens with different specifications, and compared with an observation structure, the all-through structure is more flexible and wider in application range.
Drawings
FIG. 1 is a system architecture framework of the present invention;
FIG. 2 is a circuit architecture framework of the present invention;
FIG. 3 is a circuit diagram of the interface circuit of the motherboard according to the present invention;
FIG. 4 is a circuit diagram of the interface circuit of the motherboard according to the present invention;
FIG. 5 is a circuit diagram of an image processing chip according to the present invention;
FIG. 6 is a pin circuit diagram of an image processing chip interface according to the present invention;
FIG. 7 is a schematic diagram of a boost circuit according to the present invention;
FIG. 8 is a circuit diagram of the memory according to the present invention;
FIG. 9 is a pin circuit diagram of the memory socket of the present invention;
fig. 10 is a voltage conversion circuit of the present invention.
In the figure: 10. a motherboard interface circuit; 20. an image processing chip circuit; 30. a boost circuit; 40. a memory; 50. a TFT panel drive circuit; 60. a voltage conversion circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides an all-pass TFT screen control circuit as shown in figures 1-10, as shown in figures 1 and 2, comprising a mainboard interface circuit 10, an image processing chip circuit 20 connected with the mainboard interface circuit 10, a TFT screen driving circuit 50 connected with the image processing chip circuit 20, a boosting circuit 30 connected with the mainboard interface circuit 10 and supplying power to the TFT screen driving circuit 50, and a memory 40 connected with the TFT screen driving circuit 50 and used for storing codes and parameters; in this embodiment, the motherboard interface circuit 10 is connected to the voltage boosting circuit 30 via the power signal VCI;
as shown in fig. 3 and 4, the motherboard interface circuit 10 is further connected to the power input port of the voltage conversion circuit 60, and in this embodiment, the motherboard interface circuit 10 is further connected to the voltage conversion circuit 60 through the power signal VCI.
As shown in fig. 5 and 6, the image processing chip circuit 20 includes an image processing chip and its peripheral circuits, and in the present embodiment, the image processing chip uses a CX7703 chip; the SWIRE pin, the SPI _ MISO pin, the RSTB pin, the 12C _ S _ SCL pin, the 12C _ S _ SDA pin and the 12C _ INT pin of the image processing chip are respectively connected with the SWIRE pin, the HOST _ RSTN pin, the RSTB pin, the TP _ SCL pin, the TP _ SDA pin and the TP _ INT pin of the mainboard interface circuit 10;
as shown in fig. 7, the booster circuit 30 includes a booster chip for making the voltage of the output terminal higher than that of the input terminal, and a peripheral circuit thereof, and in the present embodiment, the booster chip uses an ANX6585D chip; the pin C21M of the voltage chip U3 is connected with the pin C21P of the voltage chip through a capacitor C22, the pin C12P of the voltage chip U3 is connected with the pin C12M of the voltage boosting chip U3 through a capacitor 23,
the VCI pin of the voltage boosting chip U3 is connected with the HOST _ VCI pin of the voltage conversion chip U6 through a resistor R9, and the VCI pin of the voltage chip U3 is also connected with a pin A of the mainboard interface circuit 10 through a resistor R6;
the pin C11P of the boost chip U3 is connected with the pin C11M through a capacitor C21, and the EN _ PWRP of the boost chip U3 is connected with the pin HOST _ RSTN of the image processing chip through a resistor R3.
As shown in fig. 8 and 9, the memory includes a memory chip and its peripheral circuits, in this embodiment, the memory chip is a P25Q40L chip, the interface type of the memory 40 is serial, the memory 40 is connected to the TFT panel driving circuit 50 through an SPI serial interface, the DI pin, CLK pin, HOLD pin, VCC pin of the memory chip U8 are respectively connected to the F _ MOSI pin, F _ SCK pin, F _ HOLD pin, VDDI pin of the TFT panel driving circuit 50, the CS pin, DO pin, WP pin of the U8 are respectively connected to the F _ CS pin, F _ MISO pin, F _ WP pin of the TFT panel driving circuit 50, and the F _ WP pin is connected to the VDDI pin of the TFT panel driving circuit 50 through a resistor R4;
as shown in fig. 10, the voltage converting circuit 60 includes a voltage converting chip for converting an input voltage and outputting the converted input voltage and a peripheral circuit thereof, in this embodiment, the voltage converting chip uses an SGM2036 chip, the voltage at an output port of the voltage converting circuit 60 is 1.8V, a VIN pin of the voltage converting chip U6 is connected to a VCI pin of the motherboard interface circuit 10 through a resistor R15, a pin of the FB is connected to a power supply pin of the motherboard interface circuit 10 through a capacitor C8, and two ends of the capacitor C8 are respectively connected to a resistor R5;
the MIPI bus of the mainboard interface circuit 10 is connected with the MIPI bus input end of the image processing chip circuit 20;
the MIPI bus output end of the image processing chip circuit 20 is connected with the TFT screen driving circuit 50, and the motherboard interface circuit 10 is also connected to the image processing chip circuit 20 through a bus and an INT signal;
the image processing chip circuit 20 is also connected to the TFT screen driving circuit 50 through a bus and an INT signal;
in this example, the type of bus is I2C or SPI.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (9)
1. The utility model provides a full formula TFT screen control circuit which characterized in that: the circuit comprises a voltage conversion circuit, a mainboard interface circuit, an image processing chip circuit connected with the mainboard interface circuit, a TFT screen driving circuit connected with the image processing chip circuit, a boosting circuit connected with the mainboard interface circuit and supplying power to the TFT screen driving circuit, and a memory connected with the TFT screen driving circuit and used for storing codes and parameters;
the mainboard interface circuit is also connected with the power input port of the voltage conversion circuit.
2. The all-pass TFT screen control circuit of claim 1, wherein: the image processing chip circuit includes an image processing chip and peripheral circuits thereof.
3. The all-pass TFT screen control circuit of claim 1, wherein: the booster circuit includes a booster chip for making the voltage of the output terminal higher than the voltage of the input terminal, and a peripheral circuit thereof.
4. The all-pass TFT screen control circuit of claim 1, wherein: the voltage conversion circuit comprises a voltage conversion chip for converting input voltage and outputting the converted input voltage and a peripheral circuit thereof.
5. The all-pass TFT screen control circuit of claim 1, wherein: the MIPI bus of the mainboard interface circuit is connected with the MIPI bus input end of the image processing chip circuit;
and the MIPI bus output end of the image processing chip circuit is connected with the TFT screen driving circuit.
6. The all-pass TFT screen control circuit of claim 5, wherein:
the mainboard interface circuit is also connected to the image processing chip circuit through a bus and an INT signal;
the image processing chip circuit is also connected to the TFT screen driving circuit through a bus and an INT signal;
the bus is of type I2C or SPI.
7. The all-pass TFT screen control circuit of claim 1, wherein:
the voltage of the output port of the voltage conversion circuit is 1.8V.
8. The all-pass TFT screen control circuit of claim 1, wherein:
the interface type of the memory is serial.
9. The all-pass TFT screen control circuit of claim 8, wherein:
the memory is connected to the TFT screen driving circuit through an SPI serial interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122029036.0U CN216119515U (en) | 2021-08-26 | 2021-08-26 | All-pass TFT screen control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122029036.0U CN216119515U (en) | 2021-08-26 | 2021-08-26 | All-pass TFT screen control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN216119515U true CN216119515U (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122029036.0U Active CN216119515U (en) | 2021-08-26 | 2021-08-26 | All-pass TFT screen control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116320248A (en) * | 2023-05-18 | 2023-06-23 | 深圳曦华科技有限公司 | Memory chip sharing system, method, related device and storage medium |
-
2021
- 2021-08-26 CN CN202122029036.0U patent/CN216119515U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116320248A (en) * | 2023-05-18 | 2023-06-23 | 深圳曦华科技有限公司 | Memory chip sharing system, method, related device and storage medium |
| CN116320248B (en) * | 2023-05-18 | 2023-08-29 | 深圳曦华科技有限公司 | Memory chip sharing system, method, related device and storage medium |
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Address after: 530201 Unit 01-09, 38th Floor, Guangxi Hejing International Financial Plaza, No. 18 Kaixuan Road, Nanning Area, China (Guangxi) Pilot Free Trade Zone, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Nanning Chuxin Integrated Circuit Design Co.,Ltd. Country or region after: China Address before: Room 1023, Yingying building, 99 Tuanjie Road, yanchuangyuan, Jiangbei new district, Nanjing, Jiangsu 210043 Patentee before: Nanjing Chuxin integrated circuit Co.,Ltd. Country or region before: China |