CN1920928A - Driving system for LCD - Google Patents
Driving system for LCD Download PDFInfo
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- CN1920928A CN1920928A CN 200510096524 CN200510096524A CN1920928A CN 1920928 A CN1920928 A CN 1920928A CN 200510096524 CN200510096524 CN 200510096524 CN 200510096524 A CN200510096524 A CN 200510096524A CN 1920928 A CN1920928 A CN 1920928A
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Abstract
The invention relates to a driving system of liquid crystal display, wherein it comprises a pixel data line, a sequential control circuit, a source driving circuit and a grid driving circuit; said pixel data line directly supplies the pixel data of source driving circuit; the sequential control circuit receives one time clock and one synchronous signal, to output one source control signal and one grid control signal; the source driving circuit receives said clock signal, source control signal and the pixel signal to output video signal; the grid driving circuit receives the grid control signal to output switch signal.
Description
Technical field
The present invention relates to a kind of drive system, and particularly relate to a kind of drive system that is applied in the LCD.
Background technology
There is many flat-panel screens (Flat Panel Display) technology to be developed in succession in recent years, wherein, LCD (LCD) because have that high image quality, volume are little, in light weight, advantages such as low voltage drive, low power consumption and applied range, therefore be widely used in medium and small Portable TV, mobile phone, shoot with video-corder consumer electronics or computer products such as projector, mobile computer, desktop display and projection TV, and replace cathode-ray tube (CRT) (Cathode Ray Tube gradually; CRT), become the main flow of following display, wherein thin film transistor (TFT) (Thin Film Transistor particularly; TFT) LCD, the characteristic because of its high display quality and low consumpting power has almost occupied most market.
In LCD, gate driver circuit (Gate Driver) is used for transmitting the transistorized signal that opens or closes on the display, therefore be also referred to as scan line drive circuit (Scan Driver), and source electrode drive circuit (SourceDriver) changes digital signal into analog voltage, to be used for transmitting image signal to display, so also be called data line drive circuit (Data Driver).Sweep trace is responsible for controlling periodically with a unbalanced pulse switch of switching transistor (Switching Transistor), and when switching transistor was opened, data line can write liquid crystal cells with pixel data (Pixel Data) by switching transistor.In addition, LCD also comprises sequential control circuit (TimingController), its major function is producing gate driver circuit and the required controlling signal of source electrode drive circuit, via gate driver circuit and source electrode drive circuit, the electric signal of image is sent in the display.
Please refer to Fig. 1, Fig. 1 shows the drive system synoptic diagram of existing Thin Film Transistor-LCD, the drive system of existing Thin Film Transistor-LCD comprise sequential control circuit 108, source electrode drive circuit 110 with gate driver circuit 112.Sequential control circuit 108 is positioned on the control panel 102, and source electrode drive circuit 110 is equipped on jelly-roll type chip carrier (Tape Carrier Package; TCP or Chip On Film; COF) on 114, utilize signal wire and power supply on anisotropy conductive film (ACF) and the X plate (X Board) 104 to be connected, and gate driver circuit 112 is equipped on the jelly-roll type chip carrier 114, utilizes signal wire and power supply on anisotropy conductive film and the Y plate (Y Board) 106 to be connected.X plate 104 and Y plate 106 are in order to handle electrical signal.In addition, between control panel 102 and X plate 104 and control panel 102 and the Y plate 106 with soft flexible printed circuit board (Flexible Printed Circuit board; FPC) 116 join.
The function mode of the drive system of existing Thin Film Transistor-LCD is behind sequential control circuit 108 receive clock signals (Clock) 118, synchronizing signal 120 and pixel data 122, sequential control circuit 108 is again according to synchronizing signal 120 and pixel data 122, the data 126 and the source control signal 128 that produce grid control signal 124 and source electrode drive circuit 110 is provided.Wherein, data 126 are identical in fact with pixel data 122, yet 126 outputs of the input of pixel data 122 and data but occupy most pins of sequential control circuit 108, become hindering greatly of reducing cost.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of drive system of LCD, can reduce the pin number of sequential control circuit, the size of dwindling control panel, even can omit control panel, and then can reduce cost.
Another object of the present invention is exactly that a kind of drive system of LCD is being provided, and integrates source electrode drive circuit and sequential control circuit, can significantly reduce the complexity of drive system.
Another purpose of the present invention provides a kind of drive system of LCD, can reduce the use of printed-wiring board (PWB) (PCB) and the binding between circuit, and then can reach the effect that reduces cost.
According to above-mentioned purpose of the present invention, a kind of drive system of LCD is proposed, comprise a sequential control circuit, one source pole driving circuit, a gate driver circuit and a pixel data line at least.Sequential control circuit receives a clock signal and a synchronous signal, with an output one source pole controlling signal and a grid controlling signal.Gate driver circuit is electrically connected with sequential control circuit, and wherein, gate driver circuit receives above-mentioned grid controlling signal, with output switch signal.Pixel data line directly is electrically connected source electrode drive circuit, so that pixel data to be provided.Source electrode drive circuit is electrically connected with sequential control circuit, and above-mentioned clock signal, source electrode controlling signal and the direct reproduced image prime number certificate of source electrode drive circuit reception, with the image output data signals.
According to one embodiment of the invention, source electrode drive circuit and gate driver circuit are with jelly-roll type chip carrier or glass type substrate package (Chip On Glass).
According to another object of the present invention, a kind of drive system of LCD is proposed, at least comprise a pixel data line, a conformability source electrode drive circuit and a gate driver circuit, wherein, the conformability source electrode drive circuit comprises a sequential control circuit and one source pole driving circuit.Pixel data line is in order to provide a pixel data.Sequential control circuit receives a clock signal and a synchronous signal, and with an output one source pole controlling signal and a grid controlling signal, and source electrode drive circuit receives above-mentioned clock signal, source electrode controlling signal and pixel data, to export an image data signal.Gate driver circuit receives above-mentioned grid controlling signal, to export a switch signal.
According to another embodiment of the present invention, above-mentioned conformability source electrode drive circuit is with encapsulation of jelly-roll type chip carrier or glass type substrate package.Present embodiment comprises that also an indicator signal line links to each other with the conformability source electrode drive circuit, with the state of indication conformability source electrode drive circuit.
According to another object of the present invention, a kind of drive system of LCD is proposed, at least comprise a pixel data line, a conformability gate driver circuit and one source pole driving circuit, wherein, the conformability gate driver circuit comprises a sequential control circuit and a gate driver circuit.One pixel data line provides a pixel data.Sequential control circuit receives a clock signal and a synchronous signal, and with an output one source pole controlling signal and a grid controlling signal, and gate driver circuit receives above-mentioned grid controlling signal, to export a switch signal.Source electrode drive circuit receives above-mentioned clock signal, source electrode controlling signal and pixel data, to export an image data signal.
According to another embodiment of the present invention, above-mentioned conformability gate driver circuit is with encapsulation of jelly-roll type chip carrier or glass type substrate package.Present embodiment comprises that also an indicator signal line links to each other with this conformability gate driver circuit, to indicate the state of this conformability gate driver circuit.
Description of drawings
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and be described with reference to the accompanying drawings as follows.
Fig. 1 shows the drive system synoptic diagram of existing Thin Film Transistor-LCD.
Fig. 2 shows the drive system synoptic diagram according to the LCD of one embodiment of the invention.
Fig. 3 shows the drive system synoptic diagram according to the LCD of another embodiment of the present invention.
Fig. 4 shows the drive system synoptic diagram according to the LCD of further embodiment of this invention.
The reference numeral explanation
102: control panel 104:X plate
106:Y plate 108: sequential control circuit
110: source electrode drive circuit 112: gate driver circuit
114: jelly-roll type chip carrier 116: flexible printed circuit board
118: clock signal 120: synchronizing signal
122: pixel data 124: grid control signal
126: data 128: source control signal
202: control panel 204:X plate
206:Y plate 208: sequential control circuit
210: source electrode drive circuit 212: gate driver circuit
214: jelly-roll type chip carrier 216: flexible printed circuit board
218: clock signal 220: synchronizing signal
222: pixel data 224: grid control signal
226: source control signal 302:X plate
The 304:Y plate
306: the conformability source electrode drive circuit
308: the conformability source electrode drive circuit
310: the conformability source electrode drive circuit
312: the conformability source electrode drive circuit
314: conformability source electrode drive circuit 316: source electrode drive circuit
318: sequential control circuit 320: gate driver circuit
322: clock signal 324: pixel data
326: synchronizing signal 328: source control signal
330: grid control signal 332: the indicator signal line
334: jelly-roll type chip carrier 336: flexible printed circuit board
402:X plate 404:Y plate
406: source electrode drive circuit
408: the conformability gate driver circuit
410: the conformability gate driver circuit
412: conformability gate driver circuit 414: gate driver circuit
416: sequential control circuit 418: pixel data
420: clock signal 422: synchronizing signal
424: source control signal 426: grid control signal
428: jelly-roll type chip carrier 430: flexible printed circuit board
Embodiment
In order to make narration of the present invention more detailed and complete, can be with reference to following description and in conjunction with the diagram of Fig. 2, Fig. 3 and Fig. 4.
Please refer to Fig. 2, Fig. 2 shows the drive system synoptic diagram according to the LCD of one embodiment of the invention.The drive system of present embodiment comprises source electrode drive circuit 210, gate driver circuit 212 and sequential control circuit 208 at least.Sequential control circuit 208 is positioned on the control panel 202, and compares with existing sequential control circuit, and the pin number of sequential control circuit 208 is less, and volume is less.Source electrode drive circuit 210 is connected with X plate 204, and gate driver circuit 212 is connected with Y plate 206, wherein, X plate 204 and Y plate 206 are in order to handle electrical signal, and source electrode drive circuit 210 carries on jelly-roll type chip carrier 214 or with the glass type substrate package with gate driver circuit 212, and above-mentioned jelly-roll type chip carrier 214 is with encapsulation of adhesive tape carrier or coil type thin-film package.In addition, join with flexible printed circuit board 216 between control panel 202 and X plate 204 and control panel 202 and the Y plate 206.The function mode of the drive system of LCD of the present invention as shown in Figure 2, clock signal 218 inputs to earlier in the sequential control circuit 208 with synchronizing signal 220, export grid control signal 224 and source control signal 226 respectively by sequential control circuit 208 again, pixel data 222 is directly inputted in the source electrode drive circuit 210 then without sequential control circuit 208.In the present embodiment,, dwindle sequential control circuit 208 volumes because pixel data 222 without sequential control circuit 208, therefore, can reduce the pin number of sequential control circuit 208, and then the size of dwindling control panel 202.In addition, because the circuit of 210 of control panel 202 and source electrode drive circuits only need transmit source control signal 226, therefore, this kind mode of connection also can be simplified the circuit of 210 of the source electrode drive circuits of control panel 202 and X plate 204.
Then, please refer to Fig. 3, Fig. 3 shows the drive system synoptic diagram according to the LCD of another embodiment of the present invention.As shown in Figure 3, the drive system of present embodiment comprise at least conformability source electrode drive circuit (Integrated Source Driver) 306 with gate drive circuit 320, wherein, conformability source electrode drive circuit 306 is connected with X plate 302, and gate driver circuit 320 is connected with Y plate 304, and conformability source electrode drive circuit 306 is formed by one source pole driving circuit 316 and a sequential control circuit 318 integration.In the present embodiment, pixel data 324 is directly inputted into each source electrode drive circuit in each conformability source electrode drive circuit (conformability source electrode drive circuit 306 as shown in Figure 3, conformability source electrode drive circuit 308, conformability source electrode drive circuit 310, conformability source electrode drive circuit 312 and conformability source electrode drive circuit 314), and clock signal 322 and synchronizing signal 326 then input to earlier in each sequential control circuit in each conformability source electrode drive circuit.Then, again by the sequential control circuit in arbitrary conformability source electrode drive circuit (sequential control circuit 318 as shown in Figure 3) export respectively source control signal 328 to each source electrode drive circuit with gate pole control signal 330 to each gate driver circuit, so that source electrode drive circuit and gate driver circuit image output data signals and switch signal respectively.
In addition, present embodiment for make the design of each conformability source electrode drive circuit simpler, size is littler, so connect an indicator signal line (Indication Signal) 332 to sequential control circuit 318 by each conformability source electrode drive circuit, to indicate the state of each conformability source electrode drive circuit at present, for sequential control circuit 318 references.
Because conformability source electrode drive circuit 306, conformability source electrode drive circuit 308, conformability source electrode drive circuit 310, conformability source electrode drive circuit 312 and conformability source electrode drive circuit 314 are all identical, therefore, can select arbitrarily wherein one of at least, utilize its sequential control circuit that control signal is provided, for example Fig. 3 selects conformability source electrode drive circuit 306, makes sequential control circuit 318 that source control signal 328 and grid control signal 330 are provided.In addition, also can select wherein a plurality of conformability source electrode drive circuits to use arbitrarily, for example only use conformability source electrode drive circuit 306, conformability source electrode drive circuit 310 and conformability source electrode drive circuit 312.
In the present embodiment, because sequential control circuit is integrated with source electrode drive circuit, so can simplify the binding of circuit and the use of omitting control panel, and the conformability source electrode drive circuit is compared with existing source electrode drive circuit, size increases and is little, therefore, generally speaking still can reach the purpose that reduces cost.In addition, the conformability source electrode drive circuit still can utilize the encapsulation of jelly-roll type chip carrier, or with the glass type substrate package.
Please refer to Fig. 4, Fig. 4 shows the drive system synoptic diagram according to the LCD of further embodiment of this invention.As shown in Figure 4, the drive system of present embodiment comprises source electrode drive circuit 406 and conformability gate driver circuit (Integrated Gate Driver) 408 at least, wherein, source electrode drive circuit 406 is connected with X plate 402, and conformability gate driver circuit 408 is connected with Y plate 404, and conformability gate driver circuit 408 is formed by a gate driver circuit 414 and a sequential control circuit 416 integration.In the present embodiment, pixel data 418 is directly inputted in each source electrode drive circuit, 420 of clock signals input in each source electrode drive circuit and each the conformability gate driver circuit, synchronizing signal 422 then inputs to earlier in each sequential control circuit in each conformability gate driver circuit, then, again by the sequential control circuit in arbitrary conformability gate driver circuit (sequential control circuit 416 as shown in Figure 4) export respectively source control signal 424 to each source electrode drive circuit with gate pole control signal 426 to each conformability gate driver circuit, so that source electrode drive circuit and gate driver circuit image output data signals and switch signal respectively.
Similarly, because conformability gate driver circuit 408, conformability gate driver circuit 410 and conformability gate driver circuit 412 are all identical, therefore, can select arbitrarily wherein one of at least, utilize its sequential control circuit that required control signal is provided, or select wherein a plurality of conformability gate driver circuits to use arbitrarily.On the other hand, the conformability gate driver circuit still can utilize the encapsulation of jelly-roll type chip carrier, or with the glass type substrate package.In addition, present embodiment also can comprise that an indicator signal line (not shown) links to each other with the conformability gate driver circuit, to indicate the state of each conformability gate driver circuit at present.
By the embodiment of the invention described above as can be known, use the present invention and have following advantage.At first, the drive system of LCD of the present invention can reduce the pin number of sequential control circuit, simplifies the binding between circuit, and then can reduce cost.Moreover the drive system of LCD of the present invention can be integrated source electrode drive circuit and sequential control circuit or integrate gate driver circuit and sequential control circuit, can significantly reduce the complexity of drive system.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; those skilled in the art can be used for a variety of modifications and variations under the premise without departing from the spirit and scope of the present invention, so protection scope of the present invention is as the criterion with claim of the present invention.
Claims (17)
1. the drive system of a LCD comprises at least:
One sequential control circuit receives a clock signal and a synchronous signal, with an output one source pole controlling signal and a grid controlling signal;
The one source pole driving circuit is electrically connected with this sequential control circuit;
One gate driver circuit is electrically connected with this sequential control circuit, and wherein this gate driver circuit receives this grid controlling signal, to export a switch signal; And
One pixel data line directly is electrically connected this source electrode drive circuit, so that a pixel data to be provided;
Wherein, this source electrode drive circuit receives this clock signal, this source electrode controlling signal and directly receives this pixel data, to export an image data signal.
2. the drive system of LCD as claimed in claim 1, wherein this sequential control circuit is positioned on the control panel.
3. the drive system of LCD as claimed in claim 1, wherein this source electrode drive circuit is with encapsulation of jelly-roll type chip carrier or glass type substrate package.
4. the drive system of LCD as claimed in claim 3, wherein this source electrode drive circuit is connected on the X plate.
5. the drive system of LCD as claimed in claim 1, wherein this gate driver circuit is with encapsulation of jelly-roll type chip carrier or glass type substrate package.
6. the drive system of LCD as claimed in claim 5, wherein this gate driver circuit is connected on the Y plate.
7. the drive system of LCD as claimed in claim 1, wherein this sequential control circuit and this source electrode drive circuit can be integrated into a conformability source electrode drive circuit.
8. the drive system of LCD as claimed in claim 7 comprises at least that also an indicator signal line links to each other with this conformability source electrode drive circuit, to indicate the state of this conformability source electrode drive circuit.
9. the drive system of LCD as claimed in claim 7, wherein this conformability source electrode drive circuit is with encapsulation of jelly-roll type chip carrier or glass type substrate package.
10. the drive system of LCD as claimed in claim 1, wherein this sequential control circuit and this gate driver circuit can be integrated into a conformability gate driver circuit.
11. the drive system of LCD as claimed in claim 10, wherein this conformability gate driver circuit is with encapsulation of jelly-roll type chip carrier or glass type substrate package.
12. the drive system of a LCD comprises at least:
One pixel data line provides a pixel data;
One conformability source electrode drive circuit comprises at least:
One sequential control circuit receives a clock signal and a synchronous signal, with an output one source pole controlling signal and a grid controlling signal; And
The one source pole driving circuit receives this clock signal, this source electrode controlling signal and this pixel data, to export an image data signal; And
One gate driver circuit receives this grid controlling signal, to export a switch signal.
13. the drive system of LCD as claimed in claim 12, wherein this conformability source electrode drive circuit is with encapsulation of jelly-roll type chip carrier or glass type substrate package.
14. the drive system of LCD as claimed in claim 12 comprises at least that also an indicator signal line links to each other with this conformability source electrode drive circuit, to indicate the state of this conformability source electrode drive circuit.
15. the drive system of a LCD comprises at least:
One pixel data line provides a pixel data;
One conformability gate driver circuit comprises at least:
One sequential control circuit receives a clock signal and a synchronous signal, with an output one source pole controlling signal and a grid controlling signal; And
One gate driver circuit receives this grid controlling signal, to export a switch signal; And
The one source pole driving circuit receives this clock signal, this source electrode controlling signal and this pixel data, to export an image data signal.
16. the drive system of LCD as claimed in claim 15, wherein this conformability gate driver circuit is with the encapsulation of adhesive tape carrier, coil type thin-film package or glass type substrate package.
17. the drive system of LCD as claimed in claim 15 comprises at least that also an indicator signal line links to each other with this conformability gate driver circuit, to indicate the state of this conformability gate driver circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100965246A CN100562913C (en) | 2005-08-22 | 2005-08-22 | The drive system of LCD |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100965246A CN100562913C (en) | 2005-08-22 | 2005-08-22 | The drive system of LCD |
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| Publication Number | Publication Date |
|---|---|
| CN1920928A true CN1920928A (en) | 2007-02-28 |
| CN100562913C CN100562913C (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100965246A Active CN100562913C (en) | 2005-08-22 | 2005-08-22 | The drive system of LCD |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629457A (en) * | 2011-09-26 | 2012-08-08 | 北京京东方光电科技有限公司 | Driving module of liquid crystal display |
| CN105590603A (en) * | 2016-02-25 | 2016-05-18 | 硅谷数模半导体（北京）有限公司 | Source electrode driver and display system |
| CN105679268A (en) * | 2016-03-29 | 2016-06-15 | 硅谷数模半导体（北京）有限公司 | Display assembly |
-
2005
- 2005-08-22 CN CNB2005100965246A patent/CN100562913C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629457A (en) * | 2011-09-26 | 2012-08-08 | 北京京东方光电科技有限公司 | Driving module of liquid crystal display |
| CN102629457B (en) * | 2011-09-26 | 2014-12-17 | 北京京东方光电科技有限公司 | Driving module of liquid crystal display |
| CN105590603A (en) * | 2016-02-25 | 2016-05-18 | 硅谷数模半导体（北京）有限公司 | Source electrode driver and display system |
| CN105590603B (en) * | 2016-02-25 | 2018-07-03 | 硅谷数模半导体（北京）有限公司 | Source electrode driver and display system |
| CN105679268A (en) * | 2016-03-29 | 2016-06-15 | 硅谷数模半导体（北京）有限公司 | Display assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100562913C (en) | 2009-11-25 |
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