CN1713037A - Module of liquid crystal displaying panel and scanning driver - Google Patents
Module of liquid crystal displaying panel and scanning driver Download PDFInfo
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- CN1713037A CN1713037A CN 200510084995 CN200510084995A CN1713037A CN 1713037 A CN1713037 A CN 1713037A CN 200510084995 CN200510084995 CN 200510084995 CN 200510084995 A CN200510084995 A CN 200510084995A CN 1713037 A CN1713037 A CN 1713037A
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- signal
- scanner driver
- shows
- circuit board
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Abstract
A liquid crystal display panel module consists of liquid display panel including data electrode; scan electrode, scanning driver including time sequence controller, contraction and enlargement function circuit, and gamma value regulation circuit; data driver set on liquid display panel for displaying picture on said panel by driving the third signal data electrode under control of the second control signal.
Description
Technical field
The invention relates to a kind of display module and driver thereof, and particularly relevant for a kind of LCD panel module and scanner driver thereof.
Background technology
Please refer to Fig. 1, it is the synoptic diagram of the traditional LCD panel module of expression.Comprise display panels 110, scanner driver 120, data driver 130 (1)-130 (n) in the LCD panel module 100.Display panels 110 comprises viewing area 111, and a plurality of display units, scan electrode and data electrode are arranged in the viewing area 111.The scan electrode of scanner driver 120 control display panels 110, make delegation of the thin film transistor (TFT) delegation conducting in regular turn in the display unit of display panels 110, data driver 130 (1)-130 (n) then drives corresponding display unit by data electrode, makes viewing area 111 be able to display frame.Then dispose the required element of a plurality of demonstrations on the circuit board 160, for example time schedule controller 161 is in order to gated sweep driver 120 and data driver 130 (1)-130 (n), and direct current transducer 162 is in order to provide LCD panel module 100 work required voltage.
Based on time schedule controller 161 in order to output control signals to data driver 130 (1) to 130 (m) and data drivers, and direct current transducer 162 for output voltage to factors such as LCD panel modules 100, so (Flexible Printed Circuit, FPC) 140 (1) to 140 (m) are with transmission signals to dispose flexible circuit board in circuit board 160 and 100 of LCD panel modules.By flexible circuit board 140 (1) to 140 (m), just can make the element on the circuit board 160 be able to link up with LCD panel module 100.
Yet corresponding data driver 130 (1)-130 (n) all has control signal separately, and its desired signal line number is quite huge, and needs a large amount of flexible circuit boards with the required control signal of transmission data driver 130 (1)-130 (n).When the display panels that is applied to large-size, the quantity of required data driver is also huger, corresponding flexible circuit board also increases thereupon and area promotes, also make in LCD panel module 100 except display panels, the area of increase also promotes along with the quantity of signal.No matter the signal of 100 of other circuit boards 160 and LCD panel modules more, as the required vision signal of data driver 130 (1)-130 (n), the required voltage of LCD panel module 100 work, control signal that scanner driver 120 is required etc. also must transfer to LCD panel module 100 by flexible circuit board, to make that the demand of flexible circuit board is bigger, and cause the cost lifting of product and the complexity of circuit to increase.
Summary of the invention
In view of this, purpose of the present invention is providing a kind of LCD panel module and scanner driver thereof exactly.The use amount of flexible circuit board is reduced, and then reduce circuit complexity and reduce the cost.
According to purpose of the present invention, a kind of scanner driver is proposed, be disposed on the display panels, this scanner driver comprises time schedule controller, convergent-divergent functional circuit and image gamma value adjustment circuit, wherein, this time schedule controller according to one first clock signal to produce first control signal and second control signal, this convergent-divergent functional circuit is adjusted the pairing picture size of first shows signal to export second shows signal, and the image gamma value is adjusted circuit second shows signal is exported one the 3rd shows signal after gamma conversion.
In addition, this scanner driver is according to this first control signal driven sweep electrode, and this second control signal is transported to data driver, and this data driver with the 3rd shows signal driving data electrode, makes display panels display frame under the control of second control signal.
According to another object of the present invention, a kind of LCD panel module is proposed.LCD panel module comprises display panels, scanner driver and data driver.Display panels comprises a plurality of data electrodes and a plurality of scan electrode.Scanner driver is electrically connected and is disposed on the display panels with scan electrode.Scanner driver comprises time schedule controller, convergent-divergent functional circuit and image gamma value adjustment circuit.To produce first control signal and second control signal, scanner driver is the driven sweep electrode under the control of first control signal according to first clock signal for time schedule controller.The convergent-divergent functional circuit is adjusted the pairing picture size of first shows signal to export second shows signal.The image gamma value is adjusted circuit second shows signal is exported one the 3rd shows signal after the gamma adjustment.Data driver is electrically connected and is disposed on the display panels with data electrode, and drives each data electrode with the 3rd shows signal under the control of second control signal, makes display panels display frame.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail as follows:
Description of drawings
Fig. 1 is the synoptic diagram of the traditional LCD panel module of expression.
Fig. 2 is the synoptic diagram of expression according to the LCD panel module of a preferred embodiment of the present invention.
Fig. 3 is the calcspar of expression according to the LCD panel module of a preferred embodiment of the present invention.
The main element symbol description
100,200: LCD panel module
110,210: display panels
120,220: scanner driver
130 (1)-130 (n), 230 (1)-230 (N), 230 (k): data driver
111,211: the viewing area
140 (1)-140 (m), 240: flexible circuit board
221: phase-locked loop circuit
222: time schedule controller
223: direct current transducer
224: the image format conversion device
225: the convergent-divergent functional circuit
226: the image gamma value is adjusted circuit
227: digital to analog converter
260: printed circuit board (PCB)
261: video processor
228,229: interface circuit
Embodiment
Please refer to Fig. 2, its expression is according to the synoptic diagram of the LCD panel module of a preferred embodiment of the present invention.LCD panel module 200 comprises display panels 210, scanner driver 220, data driver 230 (1)-230 (N) and printed circuit board (PCB) 260.Display panels 210 comprises viewing area 211, comprises a plurality of display units, data electrode and scan electrode (not being shown among the figure) in the viewing area 211.Scanner driver 220 gated sweep electrodes make delegation of the thin film transistor (TFT) delegation conducting in regular turn in the display unit, and data driver 230 (1)-230 (N) then drives corresponding data electrode, makes display panels 210 be able to display frame.And display panels 210 is electrically connected with element on the circuit board 260 by flexible circuit board 240.
Please refer to Fig. 3, its expression is according to the calcspar of the LCD panel module of a preferred embodiment of the present invention.Arbitrary data driver among data driver 230 (k) data driver 230 (1)-230 (N) is in this mutual relationship with data driver 230 (k) expression scanner driver 220 and each data driver 230.Scanner driver 220 is electrically connected and is disposed on the display panels 210 with the scan electrode of display panels 210.Scanner driver 220 is electrically connected with video processor 261 by flexible circuit board 240.Scanner driver 220 comprises phase-locked loop circuit 221, time schedule controller 222, direct current transducer 223, image format conversion device 224, convergent-divergent functional circuit 225, image gamma value adjustment circuit 226, digital to analog converter 227, interface circuit 228 and interface circuit 229.
Direct current transducer 223 conversion principal voltages are to produce operating voltage P0, and display panels 210 is worked according to operating voltage P0.Phase-locked loop circuit 221 according to clock signal C 2 clock signal C1 to time schedule controller 222 and convergent-divergent functional circuit 225.Phase-locked loop circuit 221 can cooperate the resolution of viewing area can produce clock signals of different frequencies.Time schedule controller 222 according to clock signal C 1 to produce control signal Ct1 and control signal Ct2.Scanner driver 220 drives the scan electrode of display panels 210 by control signal Ct1.Data driver 230 (k) then drives the data electrode of display panels 210 by control signal Ct2.
When video processor 261 output original display signal D01 and clock signal C2, scanner driver 220 can cooperate the form of original display signal, adopts with different interface arrangements to receive, and handles original display signal D01 with the signal path of correspondence.For example this original display signal D01 is YUV signal, CCIR-601 signal or CCIR-656 signal, then interface circuit 228 receives original display signal D01 and produces shows signal D4 according to original display signal D01, and shows signal D4 is transported to image format conversion device 224.Image format conversion device 224 produces shows signal D1 after according to shows signal D4 format transformation.The image format conversion device 224 for example form of YCbCr to RGB changes the commentaries on classics device, and then shows signal D4 is the form of YCbCr, and shows signal D1 is the form of RGB.
When video processor 261 output original display signal D02 and clock signal C2, original display signal D02 for example is the rgb signal with serial (series) transmission, or the rgb signal of parallel (parallel) transmission, then interface circuit 229 receives original display signal D02 and produces shows signal D5 and transport to convergent-divergent functional circuit 225 according to original display signal D02.If original display signal D02 is the rgb signal of parallel transmission, then interface circuit 229 is converted to serial transmission with original display signal D02 by parallel transmission, to produce the shows signal D5 of serial transmission.And learn according to above-mentioned, scanner driver 220 can be supported the shows signal that various video processor 261 is exported, drive display panels 210 display frames after treatment, and the shows signal specification of its support such as YUV signal, CCIR-601 signal or CCIR-656 signal, the rgb signal of serial transmission for example is RGB series D[7:0], or the rgb signal RGB parallel D[23:0 of parallel (parallel) transmission].
Convergent-divergent functional circuit 225 according to shows signal D1 or the pairing picture size of shows signal D5, is adjusted the back with output shows signal D2 under the control of clock signal C 1.The image gamma value is adjusted circuit 226 shows signal D2 is exported shows signal D3 after the gamma adjustment.
Data driver 230 (k) makes display panels 210 display frames according to the data electrode that control signal Ct2 and shows signal D3 drive viewing area 211.
In addition, this digital to analog converter 227 adjusts circuit 226 with the image gamma value and data driver 230 is electrically connected, and it is configurable in scanner driver 220 or data driver 230 (1)-230 (N).And this digital to analog converter 227 is in order to export shows signal D3 to data driver 230 after digital-to-analog conversion.
Data driver 230 (1)-230 (N) for example connects for tandem (cascaded) and is disposed on the display panels 210.
Disclosed LCD panel module of the above embodiment of the present invention and scanner driver thereof, new construction with LCD panel module, make former working transmission between display panels and circuit board reduce, and then the quantity of flexible circuit board and area are significantly reduced.And the circuit design of LCD itself is also simplified, and cost is reduced and the increase product competitiveness.Scanner driver itself can be supported the shows signal of plurality of specifications, can make the extensive and compatible degree raising of aspect of its application.
In sum; though the present invention with preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; can change and modification, so protection scope of the present invention is as the criterion with the claim institute restricted portion that is proposed.
Claims (14)
1. a scanner driver is disposed on the display panels, and this display panels comprises a plurality of scan electrodes, and this scanner driver is electrically connected with those scan electrodes, and this scanner driver comprises:
Time schedule controller producing one first control signal and one second control signal, and drives those scan electrodes via this first control signal according to one first clock signal;
One convergent-divergent functional circuit according to the pairing picture size of one first shows signal, is adjusted back output one second shows signal; And
One image gamma value is adjusted circuit, and this second shows signal is exported one the 3rd shows signal after gamma conversion;
Wherein, this second control signal is transported to a data driver, and this data driver is subjected to the control of this second control signal, and drives this display panels display frame according to the 3rd shows signal.
2. scanner driver as claimed in claim 1, wherein this scanner driver also comprises a direct current transducer, and this direct current transducer is changed a principal voltage to produce an operating voltage, and this display panels is according to this operating voltage work.
3. scanner driver as claimed in claim 1, wherein this scanner driver also comprises a phase-locked loop circuit, in order to export this first clock signal according to a second clock signal to this time schedule controller and this convergent-divergent functional circuit, this convergent-divergent functional circuit is exported this second shows signal down and according to this first shows signal in the control of this first clock signal.
4. scanner driver as claimed in claim 3 also comprises:
One interface circuit, in order to receive an original display signal and according to this original display signal to produce one the 4th shows signal; And
One image format conversion device is according to producing this first shows signal behind the 4th shows signal format transformation and transporting to this convergent-divergent functional circuit.
5. scanner driver as claimed in claim 4, wherein the 4th shows signal is the form of YCbCr, and this first shows signal is the form of RGB, and this original display signal is YUV signal, CCIR-601 signal or CCIR-656 signal.
6. scanner driver as claimed in claim 3, wherein this scanner driver also comprises an interface circuit, after receiving an original display signal, according to this original display signal to produce this first shows signal and to transport to this convergent-divergent functional circuit.
7. scanner driver as claimed in claim 6, wherein this original display signal one rgb signal and transmit with serial mode.
8. scanner driver as claimed in claim 6, wherein this original display signal is a rgb signal and with parallel mode transmission, this first shows signal is to transmit with serial mode.
9. LCD panel module as claimed in claim 1, wherein this scanner driver also comprises a digital to analog converter, be electrically connected with this image gamma value adjustment circuit and this data driver, this digital to analog converter is in order to export the 3rd shows signal to this data driver after digital-to-analog conversion.
10. a LCD panel module comprises the described scanner driver of claim 1, and this LCD panel module also comprises:
One display panels comprises;
A plurality of data electrodes; And
A plurality of scan electrodes, this scanner driver is electrically connected and is disposed on this display panels with those scan electrodes; And
One data driver is disposed on this display panels, and is subjected to the control of this second control signal to drive those data electrodes according to the 3rd shows signal, makes this display panels display frame.
11. LCD panel module as claimed in claim 10 also comprises:
One printed circuit board (PCB); And
One video processor is disposed on this printed circuit board (PCB), this video processor in order to the work of carries out image processing after output one original display signal and a second clock signal, this scanner driver produces this first clock signal according to this second clock signal;
Wherein, this scanner driver also comprises:
One interface circuit, in order to receive this original display signal and according to this original display signal to produce one the 4th shows signal; And
One image format conversion device is according to producing this first shows signal behind the 4th shows signal format transformation and transporting to this convergent-divergent functional circuit.
12. LCD panel module as claimed in claim 11, also comprise a flexible circuit board, wherein this flexible circuit board is in order to linking this printed circuit board (PCB) and this display panels, and this video processor transmits this original display signal and this second clock signal to this scanner driver by this flexible circuit.
13. LCD panel module as claimed in claim 10 also comprises:
One printed circuit board (PCB); And
One video processor is disposed on this printed circuit board (PCB), this video processor in order to the work of carries out image processing after output one original display signal and this second clock pulse news, this scanner driver produces this first clock signal according to this second clock signal;
Wherein, this scanner driver also comprises an interface circuit, after receiving an original display signal, and according to this original display signal to produce this first shows signal and to transport to this convergent-divergent functional circuit.
14. LCD panel module as claimed in claim 13, also comprise a flexible circuit board, wherein this flexible circuit board is in order to linking this printed circuit board (PCB) and this display panels, and this video processor is disposed on this printed circuit board (PCB) and transmit this original display signal and this second clock signal to this scanner driver by this flexible circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100849955A CN100498910C (en) | 2005-07-26 | 2005-07-26 | Module of liquid crystal displaying panel and scanning driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100849955A CN100498910C (en) | 2005-07-26 | 2005-07-26 | Module of liquid crystal displaying panel and scanning driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1713037A true CN1713037A (en) | 2005-12-28 |
| CN100498910C CN100498910C (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100849955A Expired - Fee Related CN100498910C (en) | 2005-07-26 | 2005-07-26 | Module of liquid crystal displaying panel and scanning driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100498910C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637419A (en) * | 2012-04-26 | 2012-08-15 | 深圳市华星光电技术有限公司 | Liquid crystal display drive module, liquid crystal display device and liquid crystal display drive method |
| US9305510B2 (en) | 2012-04-26 | 2016-04-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LCD driving module, LCD device, and method for driving LCD |
| CN109064967A (en) * | 2018-10-31 | 2018-12-21 | 京东方科技集团股份有限公司 | A kind of control circuit and its driving method, grid drive chip, detection device |
-
2005
- 2005-07-26 CN CNB2005100849955A patent/CN100498910C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637419A (en) * | 2012-04-26 | 2012-08-15 | 深圳市华星光电技术有限公司 | Liquid crystal display drive module, liquid crystal display device and liquid crystal display drive method |
| CN102637419B (en) * | 2012-04-26 | 2014-07-02 | 深圳市华星光电技术有限公司 | Liquid crystal display drive module, liquid crystal display device and liquid crystal display drive method |
| US9305510B2 (en) | 2012-04-26 | 2016-04-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LCD driving module, LCD device, and method for driving LCD |
| CN109064967A (en) * | 2018-10-31 | 2018-12-21 | 京东方科技集团股份有限公司 | A kind of control circuit and its driving method, grid drive chip, detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100498910C (en) | 2009-06-10 |
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Granted publication date: 20090610 Termination date: 20200726 |