CN100464215C - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
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- CN100464215C CN100464215C CNB2006100610652A CN200610061065A CN100464215C CN 100464215 C CN100464215 C CN 100464215C CN B2006100610652 A CNB2006100610652 A CN B2006100610652A CN 200610061065 A CN200610061065 A CN 200610061065A CN 100464215 C CN100464215 C CN 100464215C
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Abstract
A LCD comprises a panel and drive circuit. The drive circuit comprises a signal generation device, an interface circuit and a LCD drive. The interface circuit comprises several system control paths, several image control paths, several data transmission liens and an interface selection path. The signal generation device generates several data signal, several system control signal, several image control system and an interface selecting signal. The system control path, image control path and data transmission path are used to transmit the system control signal, image control signal and the data signal to the LCD drive. The interface selection path is used to connect the system control path and the image control path.
Description
Technical field
The present invention relates to a kind of LCD.
Background technology
Because advantages such as the liquid crystal display utensil is light, thin, little power consumption are widely used in modernized information equipments such as notebook, mobile phone, personal digital assistant.At present, the application of LCD on market is more and more important.
Fig. 1 is a kind of LCD synoptic diagram of prior art.This LCD 100 comprises that a display panels 110 and is used to drive the driving circuit 120 of this display panels 110.This driving circuit 120 comprises a signal generation device 121, an interface circuit 122 and a display panels driver 123.This signal generation device 121 comprises a system control unit 1213 and an image control unit 1215.This interface circuit 122 comprises that multiple pieces of system operation circuit 1221 and multiple bar chart are as operation circuit 1222.
This system control unit 1213 produces a plurality of system control signals (read signal RD, write signal WR, address signal RS, chip selection signal CS) and data-signal.Therefore this system's operation circuit 1221 comprises circuit, the circuit that is used to transmit write signal WR, the circuit that is used for transport address signal RS that are used to transmit read signal RD, is used to the data transmission bus D0-D17 that transmits the circuit of chip selection signal CS and be used for transmission of data signals.This system's operation circuit 1221 should a plurality of system control signals and data signal transmission to this display panels driver 123.
This image control unit 1215 produces a plurality of image control signals (vertical synchronizing signal VSYNC, horizontal-drive signal HSYNC, pixel clock signal DOTCLK, enable signal ENABLE) and picture signals, so this image operation circuit 1222 comprises circuit, the circuit that is used for transmit level synchronizing signal HSYNC, the circuit that is used to transmit pixel clock signal DOTCLK that are used to transmit vertical synchronizing signal VSYNC, is used to the data transmission bus P0-P17 that transmits the circuit of enable signal ENABLE and be used for the images signal.This image operation circuit 1222 should a plurality of image control signals and image signal transmission to this display panels driver 123.
In this LCD 100,, cause the wiring of this interface circuit 122 complicated, so the wiring of this LCD 100 is complicated because a plurality of systems operation circuit 1221 and a plurality of image operation circuit 1222 comprise the circuit of more independent transmission signal respectively.
Summary of the invention
In order to solve the complicated shortcoming of LCD wiring in the prior art, be necessary to provide a kind of wiring simple LCD.
A kind of LCD, it comprises that a display panels and is used to drive the driving circuit of this display panels.This driving circuit comprises a signal generation device, an interface circuit and a display panels driver.This interface circuit comprises that multiple pieces of system operation circuit, multiple bar chart select circuit as operation circuit, many data transmission links and an interface.This signal generation device produces a plurality of data-signals, a plurality of system control signal, a plurality of image control signal and an interface and selects signal.This system's operation circuit, image operation circuit and data transmission link are respectively applied for this system control signal of transmission, this image control signal and this data-signal to this display panels driver.This interface selects circuit to be used to select the conducting of one of this system's operation circuit and this image operation circuit.When the operation circuit conducting of this system, this system control signal and this data-signal are transferred to this display panels driver via this interface circuit simultaneously, when this image operation circuit conducting, this image control signal and this data-signal are transferred to this display panels driver via this interface circuit simultaneously.
A kind of LCD, it comprises that a display panels and is used to drive the driving circuit of this display panels.This driving circuit comprises a signal generation device, an interface circuit and a display panels driver.This interface circuit comprises a plurality of systems control/image operation circuit and interface selection circuit.This signal generation device produces a plurality of system control signals, a plurality of image control signal and an interface and selects signal.This interface selects circuit to be used to select this multiple pieces of system control/image operation circuit to transmit this system control signal or this this display panels driver of image control signal road.This display panels driver is used to drive this display panels display image.
Compared to prior art, the foregoing liquid crystal display selects circuit to select by this interface, but these many data transmission links are shared in timesharing when this system control signal of transmission or image control signal, or shares this system's control/image operation circuit.Therefore in this LCD, the wiring of interface circuit that is used to connect this signal generation device and this display panels driver is simpler, that is this LCD wiring simply.
Description of drawings
Fig. 1 is a kind of prior art LCD synoptic diagram.
Fig. 2 is the synoptic diagram of LCD first embodiment of the present invention.
Fig. 3 is the synoptic diagram of LCD second embodiment of the present invention.
Embodiment
Seeing also Fig. 2, is the synoptic diagram of LCD first embodiment of the present invention.This LCD 200 comprises that a display panels 210 and is used to drive the driving circuit 220 of these display panels 210 display images.This driving circuit 220 comprises a signal generation device 221, one display panels drivers 223 and an interface circuit 225.
This signal generation device 221 produces a plurality of data-signals, a plurality of system control signals, and signal RGB/MPU_SELECT is selected at a plurality of image control signals and an interface.This system control signal comprises a read signal RD, a write signal WR, and a slice is selected a signal CS and an address signal RS.This image control signal comprises a vertical synchronizing signal VSYNC, a horizontal-drive signal HSYNC, a pixel clock signal DOTCLK and an activation signal ENABLE.
This interface circuit 225 comprises multiple pieces of system operation circuit 2251, and multiple bar chart is selected circuit 2254 as operation circuit 2252, one data transmission bus D0-D17 2253 and an interface.This a plurality of systems operation circuit 2251 is used to transmit this system control signal to this display panels driver 223.These a plurality of image operation circuits 2252 are used to transmit this image and control signal to this display panels driver 223.This data line bus D0-D17
2253 data buss (figure does not show) that are connected to this display panels driver 223 are used to transmit this data-signal to this display panels driver 223.
This display panels driver 223 comprises that one is connected to the storer 2231 that circuit 2254 is selected at this interface, this storer 2231 is used to store second interface and selects data, wherein an interface selects data corresponding to this system's operation circuit 2251 and 2253 conductings simultaneously of this data transmission link, another interface selects data corresponding to this image operation circuit 2252 and 2253 conductings simultaneously of this data transmission link, and this second interface selects data to select high voltage or low-voltage on the circuit 2254 to select via this interface.That is, this interface selects circuit 2254 to be used for selecting the conducting of one of these interface circuit 225 these system's operation circuits 2251 and this image operation circuit 2252.
The principle of work of this LCD 200 is described below:
At first, this signal generation device 221 produces the interface and selects signal, and this interface selects signal to select the interface in 2254 pairs of these storeies 2231 of circuit to select data to select via this interface.
Then, this storer 2231 is selected Data Control corresponding system operation circuit 2251 or 2252 conductings of image operation circuit according to selected interface.
When these system's operation circuit 2251 conductings, this signal generation device 221 produces system control signal and data-signal, and arrives this display panels driver 223 via system's operation circuit 2251 and this data line bus D0-D17 2253 these system control signals of transmission and data-signal respectively.
When these image operation circuit 2252 conductings, this signal generation device 221 produces image control signal and data-signal, and arrives this display panels driver 223 via this image operation circuit 2252 and this data line bus D0-D17 2253 these image control signals of transmission and data-signal respectively.
At last, this display panels driver 223 is according to the system control signal and the data-signal that receive, or image control signal and data-signal drive this display panels 210 display images.
This LCD 200 selects circuit 2254 to select by this interface, but these many data line bus D0-D17 2253 are shared in timesharing when this system control signal of transmission or image control signal.Therefore in this LCD 200, the wiring that is connected in the interface circuit 225 between this signal generation device 221 and this display panels driver 223 is simpler, so the wiring of this LCD 200 is simple.
Seeing also Fig. 3, is the synoptic diagram of LCD second embodiment of the present invention.This LCD 300 comprises that a display panels 310 and is used to drive the driving circuit 320 of these display panels 310 display images.This driving circuit 320 comprises a signal generation device 321, one display panels drivers 323 and an interface circuit 325.
This signal generation device 321 produces a plurality of system control signals, and signal RGB/MPU_SELECT is selected at a plurality of image control signals and an interface.This system control signal comprises a read signal RD, a write signal WR, and a slice is selected signal CS, an address signal RS and a plurality of data-signal.This image control signal comprises a vertical synchronizing signal VSYNC, a horizontal-drive signal HSYNC, a pixel clock signal DOTCLK, an activation signal ENABLE and a plurality of picture signal.
This interface circuit 325 comprises multiple pieces of system control/image operation circuit 3251 and interface selection circuit 3254.This system's control/image operation circuit 3251 comprises the circuit of a transmission read signal RD or vertical synchronizing signal VSYNC, the circuit of one transmission write signal WR or horizontal-drive signal HSYNC, the circuit of one transport address signal RS or pixel clock signal DOTCLK, the circuit of one transmission chip selection signal CS or enable signal ENABLE, the data bus D0-D17/PD0-PD17 of a transmission of data signals or picture signal.This interface selects circuit 3254 to be used to control this multiple pieces of system control/image operation circuit 3251 this system control signal of transmission or this image control signals.
This display panels driver 323 comprises that one is connected to a storer 3231 and the demultiplexer 3232 that circuit 3254 is selected at the interface.This demultiplexer 3232 is connected to this multiple pieces of system control/image operation circuit 3251.This storer 3231 is used to store second interface and selects data, wherein an interface selects data corresponding to this system control signal of transmission, another interface selects data corresponding to this image control signal of transmission, and this second interface selects data to select high voltage or low-voltage on the circuit 3254 to select via this interface.This storer 3231 is selected these demultiplexers 3232 of Data Control according to different interfaces, and this demultiplexer 3232 is transferred to system control signal or image control signal the different circuit (figure does not show) of this display panels driver 323 respectively.
The principle of work of this LCD 300 is described below:
At first, this signal generation device 321 produces this interface and selects signal, and this interface selects signal to select the interface in 3254 pairs of these storeies 3231 of circuit to select data to select via this interface.Simultaneously, this signal generation device 321 produces with this interface selects the corresponding a plurality of system control signals of data or a plurality of image control signal, and this system control signal or this image control signal are transferred to this display panels driver 323 via this system's control/image operation circuit 3251.
Then, this storer 3231 is selected this demultiplexer 3232 of Data Control according to selected interface, and this demultiplexer 3232 is transferred to system control signal or image control signal the different circuit of this display panels driver 323 respectively.
At last, this display panels driver 323 drives this display panels 310 display images according to the system control signal or the image control signal that receive.
This LCD 300 selects circuit 3254 to select by this interface, but this system's control/image operation circuit 3251 is shared in timesharing when this system control signal of transmission or image control signal.Therefore in this LCD 300, the wiring that is connected in the interface circuit 325 between this signal generation device 321 and this display panels driver 323 is simpler.Therefore the wiring of this LCD 300 is simple.
Claims (11)
1. LCD, it comprises that a display panels and is used to drive the driving circuit of this display panels, this driving circuit comprises:
One signal generation device, it produces a plurality of data-signals, a plurality of system control signals and a plurality of image control signal,
One display panels driver, its be used to drive this display panels display image and
One interface circuit, it comprises:
The multiple pieces of system operation circuit, it is used to transmit this system control signal to this display panels driver,
Multiple bar chart is as operation circuit, its be used to transmit this image control signal to this display panels driver and
Many data transmission links, it is used to transmit this data-signal to this display panels driver,
It is characterized in that: this signal generation device further comprises interface selection signal, this interface circuit comprises that further interface selection circuit is used to transmit this interface and selects signal, and select one of this system's operation circuit and this image operation circuit conducting in this interface circuit, when the operation circuit conducting of this system, this system control signal and this data-signal transfer to this display panels driver via this interface circuit simultaneously, when this image operation circuit conducting, this image control signal and this data-signal transfer to this display panels driver via this interface circuit simultaneously.
2. LCD as claimed in claim 1, it is characterized in that: this display panels driver comprises that one is connected to the storer that circuit is selected at the interface, it is used to store second interface and selects data, wherein an interface selects data corresponding to this system's operation circuit and the conducting simultaneously of this data transmission link, another interface selects data corresponding to this image operation circuit and the conducting simultaneously of this data transmission link, and this second interface selects data to select circuit to select via this interface.
3. LCD as claimed in claim 2 is characterized in that: this interface selects circuit to select different interfaces to select data by high voltage or low-voltage.
4. LCD as claimed in claim 1 is characterized in that: this data line bus is connected respectively to the data bus of this display panels driver.
5. LCD as claimed in claim 1 is characterized in that: this system control signal comprises a read signal, a write signal, and a slice is selected a signal and an address signal.
6. LCD as claimed in claim 1 is characterized in that: this image control signal comprises a vertical synchronizing signal, a horizontal-drive signal, a pixel clock signal and an activation signal.
7. LCD, it comprises that a display panels and is used to drive the driving circuit of this display panels, this driving circuit comprises:
One signal generation device, it produces a plurality of system control signals, and signal is selected at a plurality of image control signals and an interface,
One display panels driver, its be used to drive this display panels display image and
One interface circuit is characterized in that this interface circuit comprises:
Multiple pieces of system control/image operation circuit, its be used to transmit this system control signal or image control signal to this display panels driver and
Circuit is selected at one interface, and it is used to select this multiple pieces of system control/image operation circuit to transmit this system control signal or this image control signal.
8. LCD as claimed in claim 7, it is characterized in that: this display panels driver comprises that one is connected to the storer that circuit is selected at the interface, it is used to store second interface and selects data, wherein an interface selects data corresponding to this system control signal of transmission, another interface selects data corresponding to this image control signal of transmission, and this second interface selects data to select circuit to select via this interface.
9. LCD as claimed in claim 8 is characterized in that: this interface selects circuit to select different interfaces to select data by high voltage or low-voltage.
10. LCD as claimed in claim 9, it is characterized in that: this display panels driver further comprises a demultiplexer, this demultiplexer is connected to this multiple pieces of system control/image operation circuit, this storer is selected these demultiplexers of Data Control according to different interfaces, and this demultiplexer is transferred to system control signal or image control signal the different circuit of this display panels driver respectively.
11. LCD as claimed in claim 7, it is characterized in that: this system's control/image operation circuit comprises the circuit of a transmission read signal or vertical synchronizing signal, the circuit of one transmission write signal or horizontal-drive signal, the circuit of one transport address signal or pixel clock signal, transmission chip selection signal or the circuit of enable signal and the data bus of a transmission of data signals or picture signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100610652A CN100464215C (en) | 2006-06-09 | 2006-06-09 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100610652A CN100464215C (en) | 2006-06-09 | 2006-06-09 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101086568A CN101086568A (en) | 2007-12-12 |
| CN100464215C true CN100464215C (en) | 2009-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100610652A Expired - Fee Related CN100464215C (en) | 2006-06-09 | 2006-06-09 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100464215C (en) |
Citations (11)
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| CN1612186A (en) * | 2003-10-31 | 2005-05-04 | 精工爱普生株式会社 | Image signal processing device and method, photoelectric device and electronic apparatus |
| JP2005292856A (en) * | 2005-06-10 | 2005-10-20 | Seiko Epson Corp | Display apparatus, gamma correction method and electronic equipment |
| US20060028422A1 (en) * | 2004-08-09 | 2006-02-09 | Tae-Ho Jung | Source driver and its compression and transmission method |
| JP2006138973A (en) * | 2004-11-11 | 2006-06-01 | Sharp Corp | Display device, and driving circuit and driving method therefor |
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2006
- 2006-06-09 CN CNB2006100610652A patent/CN100464215C/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1167967A (en) * | 1996-06-07 | 1997-12-17 | Lg半导体株式会社 | Driver circuit for thin film transistor-liquid crystal display |
| US6271528B1 (en) * | 1997-07-14 | 2001-08-07 | Agfa-Gevaert | Reusable personal sun-monitor |
| CN1387662A (en) * | 1999-11-08 | 2002-12-25 | 爱特梅尔股份有限公司 | Drive circuit for liquid crystal display cell |
| US6541775B2 (en) * | 2000-05-10 | 2003-04-01 | Fuji Xerox Co., Ltd. | Portable information device |
| CN1338715A (en) * | 2000-08-11 | 2002-03-06 | Lg电子株式会社 | Self-diagnostic device and method for visual frequency signal in liquid crystal display |
| CN1348167A (en) * | 2000-09-29 | 2002-05-08 | 株式会社东芝 | Liquid crystal drive circuit and loading drive circuit |
| JP2005062353A (en) * | 2003-08-08 | 2005-03-10 | Seiko Epson Corp | Electrooptical panel, electrooptical device, and electronic apparatus |
| CN1612186A (en) * | 2003-10-31 | 2005-05-04 | 精工爱普生株式会社 | Image signal processing device and method, photoelectric device and electronic apparatus |
| US20060028422A1 (en) * | 2004-08-09 | 2006-02-09 | Tae-Ho Jung | Source driver and its compression and transmission method |
| JP2006138973A (en) * | 2004-11-11 | 2006-06-01 | Sharp Corp | Display device, and driving circuit and driving method therefor |
| JP2005292856A (en) * | 2005-06-10 | 2005-10-20 | Seiko Epson Corp | Display apparatus, gamma correction method and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN101086568A (en) | 2007-12-12 |
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Granted publication date: 20090225 Termination date: 20170609 |