CN2867764Y - Built-up circuit among different liquid crystal television screens - Google Patents
Built-up circuit among different liquid crystal television screens Download PDFInfo
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- CN2867764Y CN2867764Y CN 200620081437 CN200620081437U CN2867764Y CN 2867764 Y CN2867764 Y CN 2867764Y CN 200620081437 CN200620081437 CN 200620081437 CN 200620081437 U CN200620081437 U CN 200620081437U CN 2867764 Y CN2867764 Y CN 2867764Y
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Abstract
The utility model discloses switch circuit between different liquid crystal TV set display screens. The circuit includes interfaces for at least two different screens. RGB signal pin and horizontal and vertical synchronous signal pin of one interface are connected with visual signal processing circuit of the main board, clock signal pin and EN pin of the interface are connected with the master chip, and power pin of the interface is connected with DC power source on the main board. RGB signal pins, horizontal and vertical synchronous signal pins, clock signal pins, EN pins and power pins of the other interfaces are connected with the correspondent pins to achieve switch between different screen interfaces. The utility model has the advantages of convenient connection, high reliability and high practicability. By using the utility model, no change on circuit is needed when different screens are used, thus time for designing circuit is reduced, working efficiency is improved, and production and research cost is lowered.
Description
Technical field
The utility model belongs to the TV set circuit technical field, specifically, relates to a kind of built-up circuit of liquid crystal TV set between realizing shielding that be used for.
Background technology
At present, the LCD Interface that each producer makes on the market has nothing in common with each other, and the signal format that they receive is duplicate, different LCD Interface need dispose different motherboard circuits and support, this has brought inconvenience with regard to the manufacturing of giving TV set circuit, the technical staff need change accordingly to motherboard circuit when using the liquid crystal display screen of distinct interface instead, even redesign, to satisfy the display requirement of liquid crystal display screen, this has not only reduced efficiency, and increased exploitation and production cost, be not suitable for already promoting the use of in the television set manufacturing.
Summary of the invention
Need to change the efficiency of being brought accordingly to motherboard circuit low in order to solve in the prior art when using the liquid crystal display screen of distinct interface instead for the utility model, the problem that the Development and Production cost is high, a kind of novel built-up circuit of LCD TV between different the screen is provided, by adopting simple circuit configuration, make the interface shape that motherboard circuit can compatible different liquid crystal display screens, thereby efficiently solve the switching problem between liquid crystal display screen, improved efficiency.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
Built-up circuit between the different screens of a kind of LCD TV comprises at least two kinds of different LCD Interface, and one of them interface links to each other with motherboard circuit, the corresponding connection with the respective pins of aforementioned interface of the pin of interface in addition.
As further qualification to technique scheme, the rgb signal pin of described first interface is connected the video processing circuit on the mainboard with row field sync signal pin, the clock signal pin is connected main control chip with enable pin, and power pins links to each other with DC power supply on the mainboard; The rgb signal pin of all the other interfaces, row field sync signal pin, clock signal pin, enable pin link to each other with the corresponding pin of power pins with described first interface.
As the further qualification again to technique scheme, described LCD Interface comprises two, one 50 pin, one 36 pin; 50 pin interfaces link to each other with motherboard circuit, and 36 pin interfaces link to each other with the corresponding pin of 50 pin interfaces, and then realize being connected of liquid crystal display screen and described motherboard circuit.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by setting up switching circuit board in television main, realized conversion between the different LCD Interface by simple circuit configuration, have easy to connect, reliability is high, advantage such as practical.Use described interface conversion circuit, when using the liquid crystal display screen of distinct interface instead, do not need circuit is made any change, thereby saved time that the technical staff redesigns circuit board, effectively improved efficiency, reduce the exploitation and the production cost of equipment, strengthened the market competitiveness of LCD TV product.
Description of drawings
Fig. 1 is conventional LCD Interface and the block diagram that is connected of host circuit board;
Fig. 2 utilizes switching circuit board to realize the theory diagram that LCD Interface is connected with host circuit board in the utility model;
Fig. 3 is the schematic diagram of built-up circuit among Fig. 2.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Past we its interface of liquid crystal display screen of adopting generally comprise 50 pins, be directly connected on the host circuit board by connecting line, and then realize being connected between television main and the liquid crystal display screen, as shown in figures 1 and 3.Wherein, 5～8 pin of conventional LCD Interface XP2 are connected the B signal output part of video processing circuit with 10～13 pin; 15～18 pin are connected the G signal output part of video processing circuit with 20～23 pin; 25～28 pin are connected the R signal output part of video processing circuit with 30～33 pin; 39 pin and 40 pin receive respectively from the field sync signal DVS of mainboard and line synchronizing signal DHS; 35 pin and 37 pin receive the clock signal and the enable signal of main control chip output respectively; 42 pin～45 pin connect the DC power supply VCC on the mainboard; 3,4,9,14,19,24,29,34,36,38,41,46,47 pin link to each other with ground wire on the mainboard; All the other pins are unsettled.When elected apparatus has the liquid crystal display screen of described interface XP2, LCD Interface is matched with the XP2 interface of main frame, and then realize the normal demonstration of vision signal on liquid crystal display screen.
Development along with liquid crystal tv technology, the liquid crystal display screen that had occurred 36 pin interface XP1 in recent years again, data format and 50 pin interfaces that it receives are basically identicals, the pin that just connects power supply and ground connection is few, at this moment, just the 50 pin interfaces of host circuit board and the liquid crystal display screen of this 36 pin interfaces directly can not be linked to each other.In order to address this problem, the utility model proposes switching circuit board as shown in Figures 2 and 3, wherein, the interface XP2 of 50 pin links to each other with host circuit board, each pin of 36 pin interface XP1 and the corresponding pin of 50 pin interface XP2 are coupled together, link to each other with liquid crystal display screen again, cooperate the liquid crystal display screen of this 36 pin like this with regard to the host circuit board of having avoided doing again one 36 pin interface.Wherein, each pin annexation of 36 pin interface XP1 is referring to shown in Figure 3.7～14 pin are connected receiver, video R signal with 25～28 pin of interface XP2 with 30～33 pin are corresponding; 15～22 pin are connected receiver, video G signal with 15～18 pin of interface XP2 with 20～23 pin are corresponding; 23～26 pin are connected receiver, video B signal with 29～32 pin with 5～8 pin of interface XP2 with 10～13 pin are corresponding; 6 pin and 5 pin are 39 pin and 40 pin of connecting interface XP2 respectively, received field synchronizing signal DVS and line synchronizing signal DHS; 37 pin of 4 pin connecting interface XP2 receive enable signal; 35 pin of 3 pin connecting interface XP2, the receive clock signal; 33～35 pin connect DC power supply VCC; All the other pin ground connection.So just interface XP1 has been connected on the interface XP2, thereby has realized switching between LCD Interface, the inconvenience of having avoided the redesign host circuit board to bring.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (3)
1. the built-up circuit between a LCD TV difference is shielded, it is characterized in that: comprise at least two kinds of different LCD Interface, one of them interface links to each other with motherboard circuit, the corresponding connection with the respective pins of aforementioned interface of the pin of interface in addition.
2. the built-up circuit between the different screens of LCD TV according to claim 1, it is characterized in that: the rgb signal pin of described first interface is connected the video processing circuit on the mainboard with row field sync signal pin, the clock signal pin is connected main control chip with enable pin, and power pins links to each other with DC power supply on the mainboard; The rgb signal pin of all the other interfaces, row field sync signal pin, clock signal pin, enable pin link to each other with the corresponding pin of power pins with described first interface.
3. the built-up circuit between the different screens of LCD TV according to claim 2, it is characterized in that: described LCD Interface comprises two, one 50 pin, one 36 pin; 50 pin interfaces link to each other with motherboard circuit, and 36 pin interfaces link to each other with the corresponding pin of 50 pin interfaces, and then realize being connected of liquid crystal display screen and described motherboard circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620081437 CN2867764Y (en) | 2006-02-28 | 2006-02-28 | Built-up circuit among different liquid crystal television screens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620081437 CN2867764Y (en) | 2006-02-28 | 2006-02-28 | Built-up circuit among different liquid crystal television screens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2867764Y true CN2867764Y (en) | 2007-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620081437 Expired - Fee Related CN2867764Y (en) | 2006-02-28 | 2006-02-28 | Built-up circuit among different liquid crystal television screens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2867764Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731182A (en) * | 2017-10-20 | 2018-02-23 | 京东方科技集团股份有限公司 | Display adapter(unit) |
| CN110087008A (en) * | 2019-04-01 | 2019-08-02 | 晶晨半导体(上海)股份有限公司 | A kind of compatible apparatus of Tconless interface |
-
2006
- 2006-02-28 CN CN 200620081437 patent/CN2867764Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731182A (en) * | 2017-10-20 | 2018-02-23 | 京东方科技集团股份有限公司 | Display adapter(unit) |
| CN107731182B (en) * | 2017-10-20 | 2020-04-17 | 京东方科技集团股份有限公司 | Display adapter |
| CN110087008A (en) * | 2019-04-01 | 2019-08-02 | 晶晨半导体(上海)股份有限公司 | A kind of compatible apparatus of Tconless interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 Termination date: 20100228 |