CN100561560C - Liquid crystal display driving method - Google Patents
Liquid crystal display driving method Download PDFInfo
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- CN100561560C CN100561560C CNB2006100624405A CN200610062440A CN100561560C CN 100561560 C CN100561560 C CN 100561560C CN B2006100624405 A CNB2006100624405 A CN B2006100624405A CN 200610062440 A CN200610062440 A CN 200610062440A CN 100561560 C CN100561560 C CN 100561560C
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Abstract
The present invention relates to a kind of liquid crystal display driving method, it comprises a frame is divided into three sub-periods and three blank periods, this blank period and this sub-period space, and each blank period lags behind the sub-period corresponding with it, during these three sub-periods, one light emitting diode matrix is red-emitting, green glow and blue light respectively, and during any one blank period, this light emitting diode matrix is red-emitting, green glow and blue light simultaneously.This liquid crystal display driving method can effectively solve the lower problem of liquid crystal display displays brightness.
Description
Technical field
The present invention relates to a kind of liquid crystal display driving method.
Background technology
At present, LCD has replaced conventional cathode ray tube (the Cathode Ray Tube that is used for computer gradually, CRT) display, and, because characteristics such as the liquid crystal display utensil is light, thin, little, make its be fit to very much be applied to desktop computer, notebook computer, personal digital assistant (Personal Digital Assistant, PDA), in mobile phone, TV and multiple office automation and the audio-visual equipment.
Seeing also Fig. 1, is a kind of synoptic diagram of prior art LCD.This LCD 10 comprises the multi-strip scanning line 101 that is parallel to each other, be parallel to each other and with these sweep trace 101 vertically insulated crossing many data lines 102, (Light Emitting Diode, LED) array 140 for scan driving circuit 110, one data drive circuits 120 and a light emitting diode.This scan drive circuit 110 is used to drive this sweep trace 101.This data drive circuit 120 is used to drive this data line 102.
This light emitting diode matrix 140 comprises red light emitting diodes 141, green LED 142 and the blue LED 143 of a plurality of periodic arrangement.
Seeing also Fig. 2, is the drive waveforms figure of this LCD 10.Wherein, the switch of " R " expression red light emitting diodes 141, the switch of " G " expression green LED 142, the switch of " B " expression blue LED 143, " G1-Gn " represents a plurality of sweep signals, " V
d" expression is applied to the gray scale voltage of data line 102.Define this LCD 10 and show that a required time of full-color picture is a frame (frame).The driving method of this LCD 10 is as follows:
A. a frame is divided into three equal sub-period t1, t3, t5 and three blank periods (blanking period) t2, t4, t6.This blank period and this sub-period space, and each blank period lag behind the sub-period corresponding with it.This sub-period is used to make this LCD 10 display images.This blank period is used to make this LCD 10 further to discharge electric weight, to eliminate ghost.
During the first sub-period t1, this red light emitting diodes 141 is opened, these light emitting diode matrix 140 red-emittings, and this scan drive circuit 110 produces a plurality of sweep signals 151 continuously, and is applied to each column scan line 101 successively.During a column scan line 101 was applied in sweep signal 151, this data drive circuit 120 applied a plurality of gray scale voltage V
dTo this data line 102.
B. during the second sub-period t3, this green LED 142 is opened, these light emitting diode matrix 140 transmitting green lights, this scan drive circuit 110 produces a plurality of sweep signals 151 continuously, and be applied to each column scan line 101 successively, during a column scan line 101 was applied in sweep signal 151, this data drive circuit 120 applied a plurality of gray scale voltage V
dTo this data line 102.
C. during the 3rd sub-period t5, this blue LED 143 is opened, these light emitting diode matrix 140 emission blue lights, this scan drive circuit 110 produces a plurality of sweep signals 151 continuously, and be applied to each column scan line 101 successively, during a column scan line 101 was applied in sweep signal 151, this data drive circuit 120 applied a plurality of gray scale voltage V
dTo this data line 102.The ruddiness of this first sub-period t1, the green glow of the second sub-period t2 and the blue light of the 3rd sub-period t3 mix, and realize the demonstration of a full-color picture.
The limited amount of red light emitting diodes 141, green LED 142 and the blue LED 143 of common this light emitting diode matrix 140.For whole LCD 10, the intensity of ruddiness, green glow and the blue light of 140 emissions of this light emitting diode matrix since be subjected to quantity restriction and, thereby cause the display brightness of this LCD 10 lower.
Summary of the invention
In order to solve the lower problem of prior art liquid crystal display driving method display brightness, be necessary the liquid crystal display driving method that provides a kind of display brightness higher.
A kind of liquid crystal display driving method, it comprises a frame is divided into three sub-periods and three blank periods, this blank period and this sub-period space, and each blank period lags behind the sub-period corresponding with it, during these three sub-periods, one light emitting diode matrix is red-emitting, green glow and blue light respectively, and during any one blank period, this light emitting diode matrix is red-emitting, green glow and blue light simultaneously.
Compared to prior art, this light emitting diode matrix is while red-emitting, green glow and blue light in the blank period of this liquid crystal display driving method, thereby improve the display brightness of LCD, thereby the display brightness of the LCD of this liquid crystal display driving method driving is higher.
Description of drawings
Fig. 1 is a kind of synoptic diagram of prior art LCD.
Fig. 2 is the drive waveforms figure of LCD shown in Figure 1.
Fig. 3 is the synoptic diagram of the LCD of liquid crystal display driving method one better embodiment driving of the present invention.
Fig. 4 is the drive waveforms figure of LCD shown in Figure 3.
Embodiment
Seeing also Fig. 3, is the synoptic diagram of the LCD of liquid crystal display driving method one better embodiment driving of the present invention.This LCD 20 comprises the multi-strip scanning line 201 that is parallel to each other, be parallel to each other and with these sweep trace 201 vertically insulated crossing many data lines 202, scan driving circuit 210, one data drive circuits 220 and a light emitting diode matrix 240.This scan drive circuit 210 is used to drive this sweep trace 201.This data drive circuit 220 is used to drive this data line 202.
This light emitting diode matrix 240 comprises red light emitting diodes 241, green LED 242 and the blue LED 243 of a plurality of periodic arrangement.
Seeing also Fig. 4, is the drive waveforms figure of this LCD 20.Wherein, the switch of " R " expression red light emitting diodes 241, the switch of " G " expression green LED 242, the switch of " B " expression blue LED 243, " G1 '-Gn ' " represents a plurality of sweep signals, " V
d' " expression is applied to the gray scale voltage of data line 202.Define this LCD 20 and show that a required time of full-color picture is a frame.The driving method of this LCD 20 is as follows:
A. a frame is divided into three sub-period t1 ', t3 ', t5 ' and three blank period t2 ', t4 ', t6 ', this blank period lags behind this sub-period, and with this sub-period space.This sub-period is used to make this LCD 20 display images.This blank period is used to make this LCD 20 further to discharge electric weight, to eliminate ghost.
During the first sub-period t1 ', this red light emitting diodes 241 is opened, these light emitting diode matrix 240 red-emittings, and this scan drive circuit 210 produces a plurality of sweep signals 251 continuously, and is applied to each column scan line 201 successively.During a column scan line 201 was applied in sweep signal 251, this data drive circuit 220 applied a plurality of gray scale voltage V
d' to this data line 202.During the first blank period t2 ', this red light emitting diodes 241, green LED 242 and blue LED 243 are all opened, and this light emitting diode matrix 240 is red-emitting, green glow and blue light simultaneously.
B. during the second sub-period t3 ', this green LED 242 is opened, these light emitting diode matrix 240 transmitting green lights, this scan drive circuit 210 produces a plurality of sweep signals 251 continuously, and be applied to each column scan line 201 successively, during a column scan line 201 was applied in sweep signal 251, this data drive circuit 220 applied a plurality of data voltage V
d' to this data line 202.During the second blank period t4 ', this red light emitting diodes 241, green LED 242 and blue LED 243 are all opened, and this light emitting diode matrix 240 is red-emitting, green glow and blue light simultaneously.
C. during the 3rd sub-period t5 ', this blue LED 243 is opened, these light emitting diode matrix 240 emission blue lights, this scan drive circuit 210 produces a plurality of sweep signals 251 continuously, and be applied to each column scan line 201 successively, during a column scan line 201 was applied in sweep signal 251, this data drive circuit 220 applied a plurality of gray scale voltage V
d' to this data line 202.During the 3rd blank t6 ' period, this red light emitting diodes 241, green LED 242 and blue LED 243 are all opened, and this light emitting diode matrix 240 is red-emitting, green glow and blue light simultaneously.The white light of the blue light of the ruddiness of this first sub-period t1 ', the green glow of the second sub-period t3 ', the 3rd sub-period t5 ' and three blank period t2 ', t4 ', t6 ' mixes, and realizes the demonstration of a full-color picture.
A frame can be 16.7 milliseconds in this liquid crystal display driving method.The white balance of this LCD 20 of time scale scalable of this first sub-period t1 ', the second sub-period t3 ' and the 3rd sub-period t5 ', and the time ratio of each blank period and each sub-period can be between 1/10 to 1/5.The time of this first sub-period t1 ', the second sub-period t3 ' and the 3rd sub-period t5 ' can be isometric.The time of this first blank period t2 ', the second blank period t4 ' and the 3rd blank period t6 ' can be isometric.
Compared to prior art, this light emitting diode matrix 240 is at the interior while red-emitting of blank period t2 ', t4 ', the t6 ' of this liquid crystal display driving method, green glow and blue light, thereby improves the display brightness of this LCD 20.
Liquid crystal display driving method of the present invention also can be had other numerous variations mode, as: this light emitting diode 240 only red-emitting, green glow and blue light during any one or two the blank periods of these three blank period t2 ', t4 ', t6 '.
Claims (10)
1. liquid crystal display driving method, it comprises: a frame is divided into three sub-periods and three blank periods, this blank period and this sub-period space, and each blank period lags behind the sub-period corresponding with it, during these three sub-periods, one light emitting diode matrix is red-emitting, green glow and blue light respectively, and during any one blank period, this light emitting diode matrix is red-emitting, green glow and blue light simultaneously.
2. liquid crystal display driving method as claimed in claim 1, it is characterized in that: this liquid crystal display driving method comprises that further scan driving circuit produces a plurality of sweep signals continuously during these three sub-periods, and be applied to each column scan line successively, during a column scan line was applied in sweep signal, a data drive circuit applied a plurality of gray scale voltages to data line.
3. liquid crystal display driving method as claimed in claim 1 is characterized in that: this frame is 16.7 milliseconds.
4. liquid crystal display driving method as claimed in claim 1 is characterized in that: the white balance of controlling LCD by the time scale of regulating these three sub-periods.
5. liquid crystal display driving method as claimed in claim 1 is characterized in that: these three sub-periods are isometric.
6. liquid crystal display driving method as claimed in claim 1 is characterized in that: these three blank periods are isometric.
7. liquid crystal display driving method as claimed in claim 1 is characterized in that: the time ratio of this blank period and this sub-period is between 1/10 to 1/5.
8. liquid crystal display driving method as claimed in claim 1 is characterized in that: this liquid crystal display driving method further comprises this light emitting diode matrix during any one blank period of two blank periods of residue, simultaneously red-emitting, green glow and blue light.
9. liquid crystal display driving method as claimed in claim 8 is characterized in that: this liquid crystal display driving method further comprises this light emitting diode matrix during the one blank period of residue, simultaneously red-emitting, green glow and blue light.
10. liquid crystal display driving method as claimed in claim 1 is characterized in that: this light emitting diode matrix comprises a plurality of red light emitting diodes, a plurality of green LED and a plurality of blue LED.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100624405A CN100561560C (en) | 2006-09-01 | 2006-09-01 | Liquid crystal display driving method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100624405A CN100561560C (en) | 2006-09-01 | 2006-09-01 | Liquid crystal display driving method |
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| CN101136183A CN101136183A (en) | 2008-03-05 |
| CN100561560C true CN100561560C (en) | 2009-11-18 |
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| CN106297700B (en) * | 2016-08-30 | 2019-03-19 | 深圳市华星光电技术有限公司 | Eliminate the liquid crystal display and its display device of ghost |
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