CN218729011U - USB liquid crystal display driving device and PC with multiple screens - Google Patents
USB liquid crystal display driving device and PC with multiple screens Download PDFInfo
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- CN218729011U CN218729011U CN202223171413.5U CN202223171413U CN218729011U CN 218729011 U CN218729011 U CN 218729011U CN 202223171413 U CN202223171413 U CN 202223171413U CN 218729011 U CN218729011 U CN 218729011U
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Abstract
The utility model discloses a USB liquid crystal display driving device and a PC with multiple screens, which comprises a first USB-C interface, a USB-HUB chip and a plurality of extended display driving modules, wherein the USB-HUB chip is respectively connected with the first USB-C interface and each extended display driving module; the expansion display driving module comprises a DDR memory, a liquid crystal display driving chip, an LVDS-EDP conversion chip, a first LCD interface and a second LCD interface; the DDR memory, the first LCD interface and the LVDS-EDP conversion chip are respectively connected with the liquid crystal display driving chip; and the second LCD interface is connected with the LVDS-EDP conversion chip. The utility model discloses a 1 USB interface that only 1 USB line connection computer just can make the expansion of shielding more of PC show, and saved the CPU resource of PC and improved the running speed of PC.
Description
Technical Field
The utility model belongs to the technical field of many screen expansion display, concretely relates to USB liquid crystal display drive arrangement and have PC of many screens.
Background
With the development of the display card technology, the scenes of office work and entertainment are rich, and the display cards of desktop computers and notebook computers can support the expansion of multi-screen display. Especially, the notebook computer, such as WINDOWS notebook, can expand 5 screens at most, and MAC OS notebook can expand 7 different screens at most. However, the number of video output interfaces carried by the notebook computer is very limited, mostly 1, and rarely 2, so that the advantage of expandable multiple screens of the display card itself cannot be brought into play for more diversified multiple-screen application scenes of people. The existing three-screen expansion mode in the market at present adopts a scheme that common Displayport (or HDMI) interfaces display one to one (each liquid crystal screen needs one corresponding video line connection) to be spliced, the notebook computer has to have Displayport (or HDMI) signal output and has hard requirements on 2 or more output interfaces, and even if the notebook computer has 2 or more DP (or HDMI) video output ports, if 2 or more video interfaces are connected with a plurality of displays at the same time, the CPU resource of the computer is greatly consumed, and the computer is dragged to be very slow.
Therefore, it is necessary to develop a new USB liquid crystal display driving device and a PC having multiple screens.
Disclosure of Invention
The utility model aims at providing a USB liquid crystal display drive arrangement and have PC of shielding more only needs a USB line, sees through 1 USB mouth of PC end, can realize the shielding more extension of PC and show, and can save the CPU resource of PC and improve the running speed of PC.
The utility model discloses a USB liquid crystal display drive device, including first USB-C interface, USB-HUB chip and a plurality of extension display drive module, USB-HUB chip is connected with first USB-C interface and each extension display drive module respectively; the expansion display driving module comprises a DDR memory, a liquid crystal display driving chip, an LVDS-EDP conversion chip, a first LCD interface and a second LCD interface; the DDR memory, the first LCD interface and the LVDS-EDP conversion chip are respectively connected with the liquid crystal display driving chip; and the second LCD interface is connected with the LVDS-EDP conversion chip.
Optionally, the device further comprises a PD charging chip connected to the first USB-C interface, and a second USB-C interface connected to the PD charging chip, and the PD charging chip is further connected to the USB-HUB chip.
Optionally, the extended display driving module further includes:
the key for adjusting the brightness of the liquid crystal display is connected with the liquid crystal display driving chip through the serial port I C.
Optionally, the number of the extended display driving modules is 2 to 5.
Optionally, the liquid crystal display driving chip adopts a mi8801 chip.
Optionally, the PD charging chip employs an LDR6282 chip.
Optionally, the LVDS-EDP conversion chip employs an LT8911 chip.
In a second aspect, the present invention provides a PC with multiple screens, which comprises a host, a display screen connected to the host, a plurality of liquid crystal screens, and a USB liquid crystal display driving device as described in the present invention;
the USB liquid crystal display driving device is connected with the host through a first USB-C interface;
and each liquid crystal screen is respectively connected with each extended display driving module of the USB liquid crystal display driving device in a one-to-one correspondence manner.
The utility model has the advantages of it is following:
when the PC needs a plurality of liquid crystal screens to simultaneously carry out split screen extended display, the USB liquid crystal display driving device is connected with a host computer of the PC through a USB data line, and an extended display driving module of the USB liquid crystal display driving device is connected with the liquid crystal screens through LVDS or EDP screen lines (FPC flexible flat cable), so that the purpose that a plurality of screens can be extended by only using one USB line is achieved. The utility model discloses improve many screen display greatly and showed the compatibility to different model PCs, greatly saved the CPU resource of PC end, improved the running speed of PC.
Drawings
FIG. 1 is a schematic block diagram of a USB LCD driving device according to the present embodiment;
FIG. 2 is a schematic block diagram of a PC with multiple screens according to the present embodiment;
in the figure: 1. the display device comprises an expansion display driving module, 2, a first LCD interface, 3, a second LCD interface, 4, an LVDS-EDP conversion chip, 5, a DDR memory, 6, a liquid crystal display driving chip, 7, a key, 8, a USB-HUB chip, 9, a first USB-C interface, 10, a PD charging chip, 11, a second USB-C interface, 12, a liquid crystal screen, 13, a host, 14 and a display screen.
Detailed Description
As shown in fig. 1, in the present embodiment, a USB liquid crystal display driving apparatus includes a first USB-C interface 9, a USB-HUB chip 8, and a plurality of extended display driving modules 1. The first USB-C interface 9 is used for receiving USB video packet data of the PC; the extended display driving module 1 is used for driving the liquid crystal screen 12; the USB-HUB chip 8 is configured to transmit the data received by the first USB-C interface 9 to each extended display driving module 1, and the USB-HUB chip 8 is connected to the first USB-C interface 9 and each extended display driving module 1.
As shown in fig. 1, in this embodiment, the extended display driving module 1 includes a DDR memory 5, a liquid crystal display driving chip 6, an LVDS-EDP conversion chip 4, a first LCD interface 2, and a second LCD interface 3. The DDR memory 5 is used for temporarily storing USB video packet data. The liquid crystal display driving chip 6 is used for decoding the USB video packet data into a video image and driving the liquid crystal screen 12 to display, and the liquid crystal display driving chip 6 is respectively connected with the DDR memory 5 and the B-HUB chip 8. The LVDS-EDP conversion chip 4 is used for converting LVDS signals into EDP signals, and the LVDS-EDP conversion chip 4 is connected with the liquid crystal display driving chip 6. The first LCD interface 2 is used for connecting an LVDS liquid crystal screen, and the first LCD interface 2 is connected with the liquid crystal display driving chip 6. The second LCD interface 3 is used for connecting the EDP LCD, and the second LCD interface 3 is connected with the LVDS-EDP conversion chip 4.
In this embodiment, an extended display driving module 1 is connected to a liquid crystal panel 12, that is, when the first LCD interface 2 of the extended display driving module 1 is connected to the liquid crystal panel 12, the second LCD interface 3 is not connected to the liquid crystal panel 12, and when the second LCD interface 3 is connected to the liquid crystal panel 12, the first LCD interface 2 is not connected to the liquid crystal panel 12.
As shown in fig. 1, in the present embodiment, the USB liquid crystal display driving device further includes a PD charging chip 10 connected to the first USB-C interface 9, and a second USB-C interface 11 connected to the PD charging chip 10. The PD charging chip 10 is also connected to the USB-HUB chip 8. The second USB-C interface 11 is connected with a power adapter, and the power adapter is connected with mains supply to supply power to the liquid crystal screen 12.
As shown in fig. 1, in this embodiment, the extended display driving module 1 further includes a key 7 for adjusting brightness of the liquid crystal screen 12, and the key 7 is connected to the liquid crystal display driving chip 6 through the serial port I C.
In this embodiment, the liquid crystal panel 12 is a liquid crystal panel.
As shown in fig. 1, in this embodiment, the number of the extended display driving modules 1 is 2, or 3, or 4, or 5.
In this embodiment, the liquid crystal display driving chip 6 is a mi8801 chip. The PD charging chip 10 adopts an LDR6282 chip. The LVDS-EDP conversion chip 4 adopts an LT8911 chip.
As shown in fig. 2, in the present embodiment, a PC with multiple screens includes a host 13, a display screen 14 connected to the host 13, multiple liquid crystal screens 12, and the USB liquid crystal display driving device described in the present embodiment; the USB liquid crystal display driving device is connected with a host 13 through a first USB-C interface 9; each liquid crystal screen 12 is connected with each extended display driving module 1 of the USB liquid crystal display driving device in a one-to-one correspondence manner.
In this embodiment, the PC includes a desktop computer and a notebook computer.
When the PC needs a plurality of liquid crystal screens 12 to perform split-screen display simultaneously, a first USB-C interface 9 of the USB liquid crystal display driving device is connected with a host 13 of the PC through a USB data line, and a first LCD interface 2 or a second LCD interface 3 of an extended display driving module 1 of the USB liquid crystal display driving device is connected with the liquid crystal screens 12 through LVDS or EDP screen lines (FPC flexible flat cable), so that the connection of only one USB line is realized, and a plurality of screens can be extended.
In this embodiment, the USB liquid crystal display driving device adopts a multi-core design mode, and the image frames of the PC are packed and compressed into USB data through a driving program matched between the PC and the USB liquid crystal display driving device, and the USB data are transmitted to the USB liquid crystal display driving device through 1 USB interface (meanwhile, the display card of the PC can identify the EDID address of each extended display driving module in the USB liquid crystal display driving device), and then the USB data are respectively transmitted to the corresponding DDR memory 5 for temporary storage by using the USB data exchange function of the USB-HUB chip 8, and then the USB packet data are decoded into video images by the liquid crystal display driving chip 6 connected with the DDR memory 5 and finally driven to the liquid crystal screen 12 connected with the DDR memory 5 for display; therefore, the effect that a plurality of screens can be expanded by only using one USB line for connection is realized; therefore, the compatibility of multi-screen display to different types of PCs is greatly improved, the CPU resource of the PC end is greatly saved, the running speed of the PC is improved, and the connection is simplified.
In this embodiment, when the PC is a notebook computer, the USB liquid crystal display driving device is connected to the mains supply through the Power adapter, and the PD chip (LDR 6282) is used in the device, and the chip is a Power Delivery Power management chip, so that the reverse charging of the PC end can be realized, and the USB liquid crystal display driving device can also charge the notebook computer.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (8)
1. A USB liquid crystal display driving device is characterized in that: the USB-HUB display system comprises a first USB-C interface (9), a USB-HUB chip (8) and a plurality of extended display driving modules (1), wherein the USB-HUB chip (8) is respectively connected with the first USB-C interface (9) and each extended display driving module (1); the expansion display driving module (1) comprises a DDR memory (5), a liquid crystal display driving chip (6), an LVDS-EDP conversion chip (4), a first LCD interface (2) and a second LCD interface (3); the DDR memory (5), the first LCD interface (2) and the LVDS-EDP conversion chip (4) are respectively connected with a liquid crystal display driving chip (6); and the second LCD interface (3) is connected with the LVDS-EDP conversion chip (4).
2. The USB liquid crystal display driver according to claim 1, further comprising a PD charging chip (10) connected to the first USB-C interface (9), and a second USB-C interface (11) connected to the PD charging chip (10), the PD charging chip (10) further connected to the USB-HUB chip (8).
3. The USB liquid crystal display driving device according to claim 1, wherein: the extended display driving module (1) further comprises:
a key (7) for adjusting the brightness of the liquid crystal screen (12), the key (7) being connected with the liquid crystal display driving chip (6) through the serial port I C.
4. The USB liquid crystal display driving device according to claim 1, wherein: the number of the extended display driving modules (1) is 2-5.
5. The USB liquid crystal display driving device according to any one of claims 1 to 4, wherein: the liquid crystal display driving chip (6) adopts a mi8801 chip.
6. The USB liquid crystal display driving device according to claim 2, wherein: the PD charging chip (10) adopts an LDR6282 chip.
7. The USB liquid crystal display driving device according to any one of claims 1 to 4, wherein: the LVDS-EDP conversion chip (4) adopts an LT8911 chip.
8. A PC with multiple screens, comprising a host (13), and a display screen (14) connected to the host (13), characterized in that: further comprising a plurality of liquid crystal panels (12) and a USB liquid crystal display driver device according to any of claims 1 to 7;
the USB liquid crystal display driving device is connected with a host (13) through a first USB-C interface (9);
and each liquid crystal screen (12) is respectively connected with each extended display driving module (1) of the USB liquid crystal display driving device in a one-to-one correspondence manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223171413.5U CN218729011U (en) | 2022-11-28 | 2022-11-28 | USB liquid crystal display driving device and PC with multiple screens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223171413.5U CN218729011U (en) | 2022-11-28 | 2022-11-28 | USB liquid crystal display driving device and PC with multiple screens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218729011U true CN218729011U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223171413.5U Active CN218729011U (en) | 2022-11-28 | 2022-11-28 | USB liquid crystal display driving device and PC with multiple screens |
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| Country | Link |
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| CN (1) | CN218729011U (en) |
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- 2022-11-28 CN CN202223171413.5U patent/CN218729011U/en active Active
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