CN103700319A - Spliced display device - Google Patents
Spliced display device Download PDFInfo
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- CN103700319A CN103700319A CN201310732407.9A CN201310732407A CN103700319A CN 103700319 A CN103700319 A CN 103700319A CN 201310732407 A CN201310732407 A CN 201310732407A CN 103700319 A CN103700319 A CN 103700319A
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Abstract
The invention discloses a spliced display device comprising a display unit, modules and a controller. The display unit is formed by splicing multiple display screens, each display screen corresponds to one module, each module comprises a strip PCB (printed circuit board) and a driving circuit arranged on the PCB, and each PCB comprises a signal conversion module and a time schedule controller. The spliced display device has the advantages that the driving circuits are arranged on the strip PCBs and directly connected with a main controller through interfaces arranged on the strip PCBs, no external circuit exists, and the spliced display device is simple in circuit and convenient to assemble; a DVI/HDMI (digital visual interface/high definition multimedia interface) signal compensation module and an LVDS (low voltage differential signaling) signal compensation module are added on each PCB, so that signals can be transmitted for a long distance, and multi-module splicing is benefitted.
Description
Technical field
The present invention relates to field of display devices, particularly relate to a kind of spliced display device.
Background technology
Nowadays on market, mosaic screen kind is many, and nontransparent splicing is more ripe.
For transparent mosaic screen, prior art relatively lacks, and many technological difficulties need to be captured.And the transparent splicing occurring on market mostly is four screens splicings, and external PCB(Printed Circuit Board) plate is more, and basic need casing is hidden PCB or light source.And each pcb board connects by line respectively, cause line more, multi-screen splicing is not easy to do.
The difficult point of transparent splicing product is: 1) associated driver circuitry plate is more, and single module " lightening ", " integrated " are poor; 2) while assembling, the line of single module and player is more, and when assembling, position that line is put is difficult for processing; 3) when splicing is compared with multi-screen, transmission line is too much long, and signal is decayed.
Summary of the invention
In order to solve existing spliced display device, exist pcb board more, line is more, and multi-screen splicing is not easy to do.
The technical solution used in the present invention is: a kind of spliced display device, comprise the display unit, module and the controller that by a plurality of display screens, are spliced, the corresponding module of each display screen, described module comprises strip pcb board and be arranged on the driving circuit on pcb board, and described driving circuit comprises signal conversion module and time schedule controller.
The present invention adopts the beneficial effect of technique scheme to be: driving circuit is arranged on strip pcb board, and this driving circuit is directly directly connected with master controller by the interface arranging on strip pcb board, without external circuit, simple in structure, easy to assembly.And, on this pcb board, increased DVI/HDMI signal compensation module, LVDS signal compensation module, make signal can transmit longer distance, be beneficial to the splicing of multimode group.On strip pcb board, rationally complete and drive design, making module interface is directly DVI, HDMI, and USB3.0 etc., are directly connected with master controller, simple in structure, easy to assembly.And, on this pcb board, increased DVI/HDMI signal compensation module, or LVDS signal compensation module, make signal can transmit longer distance, be beneficial to the splicing of multimode group.
Accompanying drawing explanation
Fig. 1 is the structural representation of the spliced display device of an embodiment of the present invention;
Fig. 2 is the structural representation of one of them display screen of the present invention;
Fig. 3 is the schematic diagram of the driving circuit of an embodiment of the present invention;
Fig. 4 is the partial schematic diagram of the driving circuit of an embodiment of the present invention.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As Figure 1-3, structural representation for the spliced display device of an embodiment of the present invention, this spliced display device comprises: controller 100, the first display screen 201, second display screen 202,203, three display screens of the 3rd display screen are spliced into display unit.The corresponding module of each display screen, the first display screen 201 is provided with the first module 301, and second display screen 202 is provided with the second module 302, the three display screens 203 and is provided with the 3rd module 303.
The present embodiment be take the first display screen and is described as example, the first module 301 comprises strip pcb board 3010 and is arranged on the driving circuit on strip pcb board 3010, described driving circuit comprises DVI/HDMI signal compensation module 3011, signal conversion module 3012, LVDS signal compensation module 3013 and time schedule controller 3014, the input end of described DVI/HDMI signal compensation module 3011 is connected with controller 100, be used for the DVI obtaining, the vision signals such as HDMI forward or send, output terminal is connected with the first end of signal conversion module 3012, the second end of described signal conversion module 3012 is connected with one end of LVDS signal compensation module 3013, be used for the compensation that causes the high-speed differential signal loss of signal to carry out by long cabling, make eye diagram quality better, the other end of described LVDS signal compensation module 3013 is connected with the first display screen 201 by time schedule controller 3014.
Spliced display device of the present invention is arranged on driving circuit on strip pcb board, and this driving circuit is directly directly connected with master controller by the interface arranging on strip pcb board, without external circuit, simple in structure, easy to assembly.And, on this pcb board, increased DVI/HDMI signal compensation module, LVDS signal compensation module, make signal can transmit longer distance, be beneficial to the splicing of multimode group.
Again consult shown in Fig. 2, this strip pcb board is narrow strip, and width is 1-5cm, is arranged on the edge of display screen, when display screen is while being transparent, can avoid stopping that shade appears in display screen.Certainly, of the present inventionly also can be applied to nontransparent display screen, can reduce connecting line equally, thereby make splicing display device simple in structure.
DVI/HDMI signal compensation module 3011 of the present invention, resends or forwards for the data-signal that controller is sended over.This DVI/HDMI signal compensation module can adopt chip DS34RT5110.
LVDS signal compensation module 3013 of the present invention, for to the compensation that causes the high-speed differential signal loss of signal to carry out by long cabling, makes eye diagram quality better, and this LVDS signal compensation module can adopt chip DS15BR400.When PCB or the transmission of Cable line, can not transmit very long distance.When needs are grown Distance Transmission, after longer cabling, signal attenuation meeting and serious, the eye pattern of signal can produce closure, wide the narrowing down of eye, shake aggravations etc., can not well receive receiving end signal, cause failing to judge or judging by accident of related data, signal deletion, final impact shows.The LVDS signal compensation module that the present invention adopts, can be to causing the loss of high-speed differential signal to compensate by long cabling.
As shown in Figure 4, be the partial schematic diagram of the driving circuit of an embodiment of the present invention, driving circuit of the present invention also comprises serializer and serial deserializer, described serializer and serial deserializer are connected between signal conversion module and time schedule controller.Wherein, serializer can adopt chip LMH0050, and serial deserializer adopts chip LMH0051.The output terminal of signal conversion module is connected with one end of serializer, and the other end of serializer is connected with serial deserializer, and serial deserializer is connected with time schedule controller, at transmitting terminal, signal is encoded, and at receiving end, decodes again, recovers original signal.The present invention increases serializer and serial deserializer in driving circuit, thereby simplifies cabling, and transmission line logarithm is reduced.Preferably, be connected with clock jitter removing chip on described deserializer, debounce chip can be LMK03200.Owing to compensating, on clock line, with respect to data line, added a chips, but its time delay can not increase, for this reason, the present invention has increased the PLL chip of 0 time delay, i.e. clock jitter removing chip, thus make signal more stable.
Driving circuit of the present invention also comprises gamma device and power module, wherein gamma device and Source IC(source electrode chip) be connected, for gamma signal is provided.Certainly, gamma signal also can directly be provided by Source IC.Power module is connected with driving circuit, for power supply is provided.
Technique scheme is arranged on driving circuit on strip pcb board, and this driving circuit is directly directly connected with master controller by the interface arranging on strip pcb board, without external circuit, simple in structure, easy to assembly.And, on this pcb board, increased DVI/HDMI signal compensation module, LVDS signal compensation module, make signal can transmit longer distance, be beneficial to the splicing of multimode group.
Above-mentioned embodiment is only schematic; rather than restrictive, those skilled in the art, under the enlightenment of this method, is not departing from the scope situation that this method aim and claim protect; can also make a lot of distortion, within these all belong to protection scope of the present invention.
Claims (8)
1. a spliced display device, it is characterized in that, comprise the display unit, module and the controller that by a plurality of display screens, are spliced, the corresponding module of each display screen, described module comprises strip pcb board and be arranged on the driving circuit on pcb board, and described driving circuit comprises signal conversion module and time schedule controller.
2. spliced display device according to claim 1, it is characterized in that, described driving circuit also comprises DVI/HDMI signal compensation module, and the input end of described DVI/HDMI signal compensation module is connected with controller, and output terminal is connected with the first end of signal conversion module.For the data-signal that controller is sended over, resend or forward.
3. spliced display device according to claim 1, it is characterized in that, described driving circuit also comprises LVDS signal compensation module, one end of described LVDS signal compensation module is connected with signal conversion module, the other end is connected with display screen by time schedule controller, for the loss to high-speed differential signal, compensates.
4. spliced display device according to claim 1, is characterized in that, described driving circuit also comprises serializer and serial deserializer, and described serializer and serial deserializer are connected between signal conversion module and time schedule controller.
5. spliced display device according to claim 4, is characterized in that, on described serial deserializer, is connected with clock jitter removing chip.
6. spliced display device according to claim 1, is characterized in that, described display screen is transparent or opaque.
7. the spliced display device described in any one according to claim 1-6, is characterized in that, described strip pcb board is narrow strip.
8. spliced display device according to claim 7, is characterized in that, described strip pcb board is arranged on the marginal position of display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732407.9A CN103700319A (en) | 2013-12-26 | 2013-12-26 | Spliced display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310732407.9A CN103700319A (en) | 2013-12-26 | 2013-12-26 | Spliced display device |
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| CN103700319A true CN103700319A (en) | 2014-04-02 |
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| CN201310732407.9A Pending CN103700319A (en) | 2013-12-26 | 2013-12-26 | Spliced display device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269128A (en) * | 2014-09-26 | 2015-01-07 | 京东方科技集团股份有限公司 | Spliced screen and driving method thereof |
| CN106157817A (en) * | 2016-08-31 | 2016-11-23 | 京东方科技集团股份有限公司 | A kind of venetian blind type display device |
| CN108386425A (en) * | 2018-02-28 | 2018-08-10 | 惠州市华星光电技术有限公司 | Display screen splicing apparatus and display equipment |
| CN109741683A (en) * | 2019-03-22 | 2019-05-10 | 京东方科技集团股份有限公司 | Display screen and mosaic screen |
| CN110136665A (en) * | 2019-04-30 | 2019-08-16 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted Multi-screen display system driving method and device |
| CN110648625A (en) * | 2019-10-31 | 2020-01-03 | 京东方科技集团股份有限公司 | Shifting register, driving method thereof and grid driving circuit |
| WO2022022125A1 (en) * | 2020-07-31 | 2022-02-03 | 京东方科技集团股份有限公司 | Tiled display unit, tiled display device and manufacturing method therefor |
| CN114299818A (en) * | 2021-12-20 | 2022-04-08 | 武汉华星光电半导体显示技术有限公司 | Spliced display screen |
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| CN104269128A (en) * | 2014-09-26 | 2015-01-07 | 京东方科技集团股份有限公司 | Spliced screen and driving method thereof |
| CN104269128B (en) * | 2014-09-26 | 2016-09-21 | 京东方科技集团股份有限公司 | A kind of mosaic screen and driving method thereof |
| CN106157817A (en) * | 2016-08-31 | 2016-11-23 | 京东方科技集团股份有限公司 | A kind of venetian blind type display device |
| CN108386425A (en) * | 2018-02-28 | 2018-08-10 | 惠州市华星光电技术有限公司 | Display screen splicing apparatus and display equipment |
| CN109741683A (en) * | 2019-03-22 | 2019-05-10 | 京东方科技集团股份有限公司 | Display screen and mosaic screen |
| CN110136665A (en) * | 2019-04-30 | 2019-08-16 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted Multi-screen display system driving method and device |
| CN110648625A (en) * | 2019-10-31 | 2020-01-03 | 京东方科技集团股份有限公司 | Shifting register, driving method thereof and grid driving circuit |
| WO2022022125A1 (en) * | 2020-07-31 | 2022-02-03 | 京东方科技集团股份有限公司 | Tiled display unit, tiled display device and manufacturing method therefor |
| CN114299818A (en) * | 2021-12-20 | 2022-04-08 | 武汉华星光电半导体显示技术有限公司 | Spliced display screen |
| WO2023115557A1 (en) * | 2021-12-20 | 2023-06-29 | 武汉华星光电半导体显示技术有限公司 | Tiled display screen |
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Application publication date: 20140402 |