CN101075028A - Printing-circuit board module for liquid-crystal display device - Google Patents
Printing-circuit board module for liquid-crystal display device Download PDFInfo
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- CN101075028A CN101075028A CN 200610060735 CN200610060735A CN101075028A CN 101075028 A CN101075028 A CN 101075028A CN 200610060735 CN200610060735 CN 200610060735 CN 200610060735 A CN200610060735 A CN 200610060735A CN 101075028 A CN101075028 A CN 101075028A
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Abstract
A printed circuit board module of liquid crystal display is prepared as connecting single-layer printed circuit board to double-layer printed circuit board, setting power supply circuit and back light control circuit on single-layer printed circuit board, setting signal processing circuit with partial circuit having low requirement on preventing signal interference on single-layer printed circuit board and setting signal processing circuit with partial circuit having high requirement on preventing signal interference on double-layer printed circuit board.
Description
Technical field
The present invention relates to a kind of printing-circuit board module for liquid-crystal display device.
Background technology
At present, LCD has replaced conventional cathode ray tube (the Cathode Ray Tube that is used for counter gradually, CRT) display, and, because characteristics such as LCD has gently, thin, little, make its be fit to very much be applied in desktop PC, personal digital assistant (Personal Digital Assistant, PDA), portable phone, TV and multiple office automation and audio-visual equipment.
LCD generally includes module backlight, display panels and controls the printing-circuit board module that this module backlight is luminous and this display panels shows.
Please refer to Fig. 1, is a kind of synoptic diagram of printing-circuit board module for liquid-crystal display device of prior art exposure.This printing-circuit board module 10 comprises a power circuit 11, a backlight control circuit 12 and a signal processing circuit 13.This backlight control circuit 12 is used to control the luminous of backlight liquid crystal display module.This signal processing circuit 13 is used to receive outside picture signal, and exports the display panels of this LCD to display image after this image handled.This signal processing circuit 13 also can be carried out FEEDBACK CONTROL to this backlight control circuit 12.This power circuit 11 provides power supply for this backlight control circuit 12 with this signal processing circuit 13.
Please refer to Fig. 2, is the synoptic diagram of this signal processing circuit 13.This signal processing circuit 13 comprises a crystal oscillating circuit unit 130, a low voltage transition circuit unit 131, an audio frequency processing circuit unit 132, a unit for scaling (Scaler) 133, a micro-control unit (Micro Controller Unit, MCU) 134, one expanded scope flag data (Extend Display Identification Data, EDID) storage unit 135, a mode of operation storage unit 136, a video input interface circuit unit 137, a panel interface circuit unit 138 and a keyboard interface circuit unit 139.
This power circuit 11 provides power supply for this low voltage transition circuit unit 131, this panel interface circuit unit 138, this micro-control unit 134 and this audio frequency processing circuit unit 132.This video input interface circuit unit 137 is used to receive outside signal.This expanded scope flag data storage unit 135 is used to store the flag information of LCD, this flag information can be sent to this video input interface circuit unit 137 being presented at display panels, and the information of the outside source that this micro-control unit 134 can receive to this flag information with from this video input interface circuit unit 137 compares checking.The external signal that 133 pairs of these video input interface circuit units of this unit for scaling 137 receive is handled, obtain picture signal and sound signal, and picture signal is sent to display panels with display image by this panel interface circuit unit 138, sound signal is sent to this audio frequency processing circuit unit 132 with sounding, and this micro-control unit 134 can further be controlled this audio frequency processing circuit unit 132.The mode of operation that this mode of operation storage unit 136 is used to store LCD is provided with parameter, and this micro-control unit 134 can be adjusted the mode of operation of LCD in view of the above.But the push button signalling of these keyboard interface circuit unit 139 acceptable solution crystal displays also sends this micro-control unit 134 to and realizes adjustment to LCD.This panel interface circuit unit 138 is used to connect this signal processing circuit 13 and display panels.This crystal oscillating circuit unit 130 is used for providing pulse duration frequency signal to this unit for scaling 133 and this micro-control unit 134.
This printing-circuit board module 10 is integrated (All In One) designs, be about to this power circuit 11, this backlight control circuit 12 and this signal processing circuit 13 and be incorporated on the printed circuit board, so design can improve the processing procedure of printed circuit board (PCB) and accelerate processing procedure speed.
Because the signal that this signal processing circuit 13 is handled is digital signal normally, its sample frequency is higher usually, easily crosstalks between the signal.Be crosstalking between anti-stop signal, this printing-circuit board module 10 adopts the doubling plate design usually, and the cost of doubling plate is higher, so make that the cost of printing-circuit board module 10 is higher; And when the circuit to this printing-circuit board module 10 redesigned, the entire circuit plate all needed to carry out rewiring, had increased the difficulty of redesign.
Summary of the invention
In order to solve the problem of the high and redesign difficulty of printing-circuit board module cost of the prior art, be necessary to provide a kind of cost lower and redesign simple printing-circuit board module for liquid-crystal display device.
A kind of printing-circuit board module for liquid-crystal display device, it comprises: a single-layer printed circuit plate and pair of lamina printed circuit board (PCB).This double-layer printing circuit board is connected with this single-layer printed circuit plate.The circuit of this printing-circuit board module comprises a power circuit, a backlight control circuit and a signal processing circuit, and this power circuit and backlight control circuit are arranged on this single-layer printed circuit plate.This signal processing circuit comprises to the higher partial circuit of anti-stop signal interference requirement with to the anti-lower partial circuit of stop signal interference requirement, and the anti-higher partial circuit of stop signal interference requirement is arranged on this double-layer printing circuit board, the anti-lower partial circuit of stop signal interference requirement is arranged on this single-layer printed circuit plate.
Compared with prior art, because this printing-circuit board module is the unitized construction of a single-layer printed circuit plate and pair of lamina printed circuit board (PCB), the anti-higher partial circuit of stop signal interference requirement is arranged on this double-layer printing circuit board, the anti-lower partial circuit of stop signal interference requirement is arranged on this single-layer printed circuit plate, can reduce simultaneously the area of doubling plate avoiding crosstalking between the signal, thereby reduce the cost of this printing-circuit board module, and when wherein the circuit of a printed circuit board (PCB) redesigns, only need separately this printed circuit board (PCB) to be carried out rewiring and get final product, thereby make that the redesign of this printing-circuit board module is simple.
Description of drawings
Fig. 1 is the synoptic diagram of the printing-circuit board module for liquid-crystal display device of prior art.
Fig. 2 is the synoptic diagram of signal processing circuit shown in Figure 1.
Fig. 3 is the circuit block diagram of printing-circuit board module for liquid-crystal display device of the present invention.
Fig. 4 is the synoptic diagram of signal processing circuit shown in Figure 3.
Fig. 5 is the synoptic diagram of printing-circuit board module for liquid-crystal display device of the present invention.
Embodiment
Please refer to Fig. 3, is the circuit block diagram of printing-circuit board module for liquid-crystal display device of the present invention.The circuit of this printing-circuit board module 20 comprises a power circuit 21, a backlight control circuit 22 and a signal processing circuit 23.This backlight control circuit 22 is used to control the luminous of backlight liquid crystal display module.This signal processing circuit 23 is used to receive outside picture signal, and exports the display panels of this LCD to display image after this image handled.This power circuit 21 provides power supply for this backlight control circuit 22 with this signal processing circuit 23.
Please refer to Fig. 4, is the synoptic diagram of signal processing circuit 23 shown in Figure 3.This signal processing circuit 23 comprises a crystal oscillating circuit unit 230, a low voltage transition circuit unit 231, an audio frequency processing circuit unit 232, a unit for scaling 233, a micro-control unit 234, an expanded scope flag data storage unit 235, a mode of operation storage unit 236, a video input interface circuit unit 237, a panel interface circuit unit 238 and a keyboard interface circuit unit 239.
This power circuit 21 provides power supply for this low voltage transition circuit unit 231, this panel interface circuit unit 238, this micro-control unit 234 and this audio frequency processing circuit unit 232.This low voltage transition circuit unit 231 provides supply voltage for this unit for scaling 233.This video input interface circuit unit 237 is used to receive outside signal.This expanded scope flag data storage unit 235 is used for the flag information of storage unit LCD, this flag information can be sent to this video input interface circuit unit 237 being presented at display panels, and the information of the outside source that this micro-control unit 234 can receive to this flag information with from this video input interface circuit unit 237 compares checking.The external signal that 233 pairs of these video input interface circuit units of this unit for scaling 237 receive is handled, obtain picture signal and sound signal, and picture signal is sent to display panels with display image by this panel interface circuit unit 238, sound signal is sent to this audio frequency processing circuit unit 232 with sounding, and this micro-control unit 234 can further be controlled this audio treatment unit 232.The mode of operation that this mode of operation storage unit 236 is used to store LCD is provided with parameter, and this micro-control unit 234 can be adjusted the mode of operation of LCD in view of the above.But the push button signalling of these keyboard interface circuit unit 239 acceptable solution crystal displays also sends this micro-control unit 234 to and realizes adjustment to LCD.This panel interface circuit unit 238 is used to connect this signal processing circuit 23 and display panels.This crystal oscillating circuit unit 230 is used for providing pulse duration frequency signal to this unit for scaling 233 and this micro-control unit 234.
Please refer to Fig. 5, is the synoptic diagram of the printing-circuit board module of the present invention's one better embodiment.This printing-circuit board module 20 comprises one first printed circuit board (PCB) 31 and one second printed circuit board (PCB) 32.This second printed circuit board (PCB) 32 is to be plugged on this first circuit board 31 by pin.This first printed circuit board (PCB) 31 is single layer board structures, which is provided with this power circuit 21, this backlight control circuit 22, this low voltage transition circuit unit 231, this audio frequency processing circuit unit 232, this expanded scope flag data storage unit 235 and this video input interface circuit unit 237, this partial circuit is lower to the requirement that anti-stop signal disturbs, and therefore can be arranged on this first printed circuit board (PCB) 31.
This second printed circuit board (PCB) 32 is pair of lamina board structure of circuit, and its area is less than this first printed circuit board (PCB).This second printed circuit board (PCB) 32 is provided with needs the part signal of two-layer wiring treatment circuit 23: this crystal oscillating circuit unit 230, this unit for scaling 233, this micro-control unit 234, this mode of operation storage unit 236, this panel interface circuit unit 238 and this keyboard interface circuit unit 239, this partial circuit is to having relatively high expectations that anti-stop signal disturbs.
Compared to prior art, because this printing-circuit board module 20 is arranged on this second printed circuit board (PCB) 32 with the circuit that needs two-layer wiring of this signal processing circuit 23, other circuit is arranged on this first printed circuit board (PCB) 31, and this first printed circuit board (PCB) 31 is laminas, this second printed circuit board (PCB) 32 is doubling plates, thereby can reduce the area that this printing-circuit board module 20 adopts doubling plates simultaneously avoiding crosstalking between the signal, make that printing-circuit board module 20 costs are lower; When wherein the circuit of a printed circuit board (PCB) redesigns, only need to carry out rewiring to this printed circuit board (PCB) separately and get final product, thereby reduced the difficulty of the redesign of this printing-circuit board module 20.
Yet the present invention is not exceeded with above-mentioned embodiment, and for example, this micro-control unit 234 can be integrated in this unit for scaling 233; This first printed circuit board (PCB) 31 also can be connected by flexible circuit board with this second printed circuit board (PCB) 32, can also connect by connector; Also can omit this audio frequency processing circuit unit 232 in this printing-circuit board module 20.
Claims (10)
1. printing-circuit board module for liquid-crystal display device, it comprises the pair of lamina printed circuit board (PCB), the circuit of this printing-circuit board module comprises a power circuit, one backlight control circuit and a signal processing circuit, this signal processing circuit comprises to the higher partial circuit of anti-stop signal interference requirement with to the anti-lower partial circuit of stop signal interference requirement, it is characterized in that: this printing-circuit board module for liquid-crystal display device further comprises a single-layer printed circuit plate, this power circuit and backlight control circuit are arranged on this single-layer printed circuit plate, this double-layer printing circuit board is connected with this single-layer printed circuit plate, the anti-higher partial circuit of stop signal interference requirement is arranged on this double-layer printing circuit board, the anti-lower partial circuit of stop signal interference requirement is arranged on this single-layer printed circuit plate.
2. printing-circuit board module for liquid-crystal display device as claimed in claim 1, it is characterized in that: the anti-lower partial circuit of stop signal interference requirement is comprised a low voltage transition circuit unit, the anti-higher partial circuit of stop signal interference requirement is comprised a unit for scaling, and this low voltage transition circuit unit provides supply voltage for this unit for scaling.
3. printing-circuit board module for liquid-crystal display device as claimed in claim 2, it is characterized in that: the anti-lower partial circuit of stop signal interference requirement is further comprised a video input interface circuit unit and an expanded scope flag data storage unit, the anti-higher partial circuit of stop signal interference requirement is further comprised a micro-control unit, this video input interface circuit unit is used to receive outside signal, this expanded scope flag data storage unit is used for the flag information of storage unit LCD, the information of the outside source that this micro-control unit can receive to this flag information with from this video input interface circuit unit compares checking, this unit for scaling is handled the external signal that this video input interface circuit unit receives, and obtains picture signal and sound signal.
4. printing-circuit board module for liquid-crystal display device as claimed in claim 3 is characterized in that: this micro-control unit is incorporated among this unit for scaling.
5. printing-circuit board module for liquid-crystal display device as claimed in claim 3, it is characterized in that: the anti-higher partial circuit of stop signal interference requirement is further comprised a panel interface circuit unit, this panel interface circuit unit is used to connect this signal processing circuit and display panels, and picture signal is sent to display panels with display image by this panel interface circuit unit.
6. printing-circuit board module for liquid-crystal display device as claimed in claim 5, it is characterized in that: the anti-lower partial circuit of stop signal interference requirement is further comprised an audio frequency processing circuit unit, sound signal is sent to this audio frequency processing circuit unit with sounding, and this micro-control unit can further be controlled this audio treatment unit.
7. printing-circuit board module for liquid-crystal display device as claimed in claim 6, it is characterized in that: the anti-higher partial circuit of stop signal interference requirement is further comprised a mode of operation storage unit and a keyboard interface circuit unit, the mode of operation that this mode of operation storage unit is used to store LCD is provided with parameter, this micro-control unit can be adjusted the mode of operation of LCD in view of the above, but the push button signalling of this keyboard interface circuit unit acceptable solution crystal display and send this micro-control unit to and realize adjustment to LCD.
8. printing-circuit board module for liquid-crystal display device as claimed in claim 7, it is characterized in that: the anti-higher partial circuit of stop signal interference requirement is further comprised a crystal oscillating circuit unit, and this crystal oscillating circuit unit is used for providing pulse duration frequency signal to this unit for scaling and this micro-control unit.
9. printing-circuit board module for liquid-crystal display device as claimed in claim 1 is characterized in that: this double-layer printing circuit board is plugged on this single-layer printed circuit plate.
10. printing-circuit board module for liquid-crystal display device as claimed in claim 1 is characterized in that: this double-layer printing circuit board is to be connected by flexible printed wiring board or connector with this single-layer printed circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610060735 CN101075028A (en) | 2006-05-19 | 2006-05-19 | Printing-circuit board module for liquid-crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610060735 CN101075028A (en) | 2006-05-19 | 2006-05-19 | Printing-circuit board module for liquid-crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101075028A true CN101075028A (en) | 2007-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610060735 Pending CN101075028A (en) | 2006-05-19 | 2006-05-19 | Printing-circuit board module for liquid-crystal display device |
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| CN (1) | CN101075028A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937635A (en) * | 2010-09-28 | 2011-01-05 | 天津三星电子显示器有限公司 | Display provided with integrated backlight drive board |
| WO2016107046A1 (en) * | 2015-01-04 | 2016-07-07 | 京东方科技集团股份有限公司 | Display device and array substrate |
| WO2019232987A1 (en) * | 2018-06-05 | 2019-12-12 | 深圳市华星光电技术有限公司 | Voltage output system and liquid crystal display device |
-
2006
- 2006-05-19 CN CN 200610060735 patent/CN101075028A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101937635A (en) * | 2010-09-28 | 2011-01-05 | 天津三星电子显示器有限公司 | Display provided with integrated backlight drive board |
| WO2016107046A1 (en) * | 2015-01-04 | 2016-07-07 | 京东方科技集团股份有限公司 | Display device and array substrate |
| US10204574B2 (en) | 2015-01-04 | 2019-02-12 | Boe Technology Group Co., Ltd. | Display device and array substrate |
| WO2019232987A1 (en) * | 2018-06-05 | 2019-12-12 | 深圳市华星光电技术有限公司 | Voltage output system and liquid crystal display device |
| US10984750B1 (en) | 2018-06-05 | 2021-04-20 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Voltage output system and liquid crystal display device |
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