CN101707053A - Time field and time sequence control method of light sources of LCD panel - Google Patents
Time field and time sequence control method of light sources of LCD panel Download PDFInfo
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- CN101707053A CN101707053A CN200910221920A CN200910221920A CN101707053A CN 101707053 A CN101707053 A CN 101707053A CN 200910221920 A CN200910221920 A CN 200910221920A CN 200910221920 A CN200910221920 A CN 200910221920A CN 101707053 A CN101707053 A CN 101707053A
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Abstract
The invention provides a time field and time sequence control method of light sources of an LCD panel, which is used for controlling display time sequences of time fields and time sequences of red, green, blue and white (R, G, B and W) light sources. The light sources of three primary colours of red, green, blue and the like are respectively opened by adopting time field division to display a three primary color image, and the red, the green and the blue light sources are opened simultaneously to display a white image. Because the opening times of the light sources of red, green, blue and the like are increased from 1/3 frame time to 1/2 frame time in each frame time, the brightness of the LED panel is improved.
Description
Technical field
The present invention is about a kind of time field and time sequence control method of light sources of LCD panel, especially about a kind of by the time increase the time field sequential control method that white light source shows the LCD panel that promotes display brightness in the field.
Background technology
Fig. 1 shows the source electrode drive circuit (synoptic diagram that is connected of Source Driver Circuit and display panel (Panel) of an available liquid crystal display (LCD).As shown in the drawing, available liquid crystal display 10 comprises a display panel 11, a plurality of data lines 12 and one source pole driving circuit 13.Display panel 11 comprises the pixel (pixel) 20 of two-dimensional matrix, each pixel 20 comprises a red sub-pixel (sub-pixel) 21, a green sub-pixels 22 and a blue subpixels 23, and those data lines 12 are controlled the action of red sub-pixel 21, green sub-pixels 22 and blue subpixels 23 respectively.The type of drive of available liquid crystal display 10 is that the source electrode drive circuit 13 by drive unit drives red sub-pixel 21, green sub-pixels 22 and the blue subpixels 23 on the display panel 11 respectively.Yet how much display panel 11 arranges sub-pixel if having, and just must drive how many bar data line data lines should be arranged, and source electrode drive circuit 13 just must offer corresponding how many bars driving signal signals that offers.In addition, LCD 10 must dispose the optical filtering that colored filter (Color Filter) is redness (R), green (G) and blue (B), so the manufacturing cost of LCD 10 is quite high.
Fig. 2 shows the connection diagram of the source electrode drive circuit and the display panel of another existing display.As shown in the drawing, this existing display 10a comprises a display panel 11a, a plurality of data lines 12a and one source pole driving circuit 13a.Display panel 11a comprises the pixel 20a of two-dimensional matrix, and each pixel 20a comprises emitting red light unit (sub-pixel) 21a, a green emitting unit 22a and a blue-light-emitting unit 23a.Luminescence unit can for example can be light emitting diode (LED).(time field sharing) technology was cut apart in the field when source electrode drive circuit 13a of display 10a adopted, in order to reduce the drive signal output number of data line.Cutting techniques required data line number in field only wanted that number of data lines purpose 1/3 gets final product in the display 10 when display 10a used, and the colored filter of need not arranging in pairs or groups, and can reduce manufacturing cost greatly.
The field cutting techniques is meant for each frame (frame) and lights emitting red light unit 21a earlier when so-called, allows screen become redness, lights green emitting unit 22a again, allows screen become green, lights blue-light-emitting unit 23a subsequently again, allows screen become blueness.There is the characteristic of persistence of vision (Visual stayingphenomenon, or duration of vision) by human eye, makes the user when watching display, present the sensation of colour picture.
Fig. 3 shows the sequential chart (Timing Chart) in order to the signal that drives Fig. 2 display.As shown in Figure 3, source electrode drive circuit 13a receives vertical synchronizing signal Vsync and horizontal-drive signal Hsync.In the time of a frame T of display frame, the output signal Sout of source electrode drive circuit 13a is divided into three subframes, in order to light emitting red light unit 21a, green emitting unit 22a and blue-light-emitting unit 23a respectively.Because emitting red light unit 21a, green emitting unit 22a and blue-light-emitting unit 23a can be lighted respectively, and each subframe all needs the trigger pip of the horizontal-drive signal Hsync of equal number, so the frequency of horizontal-drive signal Hsync can be enhanced 3 times.
In Fig. 3 embodiment, since the time field relation cut apart, the time that each luminescence unit is lighted becomes and only remains 1/3 frame time, in order to reach certain brightness, must reach same brightness by the brightness that increases luminescence unit, and then make whole power consumption increase with Fig. 1 embodiment.
Summary of the invention
The object of the present invention is to provide a kind of time field sequential control method of the LCD panel that can increase display brightness.
In order to reach above-mentioned purpose, the field partitioning scheme was opened light sources of different colors when the time field and time sequence control method of light sources of LCD panel of the present invention utilized, this LCD panel has trichromatic light source, this LCD panel the time field sequential control method except comprising the step of opening (turn on) this trichromatic solid color light source in regular turn, also comprise the step of opening plural colour light source in the lump simultaneously.
LCD panel of the present invention the time field sequential control method owing to comprise the step of opening plural colour light source in the lump simultaneously, so the time field sequential control method of this LCD panel rises to 1/2 frame time with opening time of images such as redness, green, blueness from 1/3 frame time, and then improves the LCD panel luminance.
Description of drawings
Fig. 1 shows the synoptic diagram of an available liquid crystal display.
Fig. 2 shows the synoptic diagram of an existing display.
Fig. 3 shows the existing sequential chart in order to the signal that drives Fig. 2 display.
Fig. 4 shows the process flow diagram of the displaying panel driving method of one embodiment of the invention.
Fig. 5 shows its sequential chart in order to the signal of driving display of displaying panel driving method of one embodiment of the invention.
A plurality of subframes of a frame among Fig. 6 displayed map 5 embodiment.
[main element symbol description]
10 LCD
The 10a display
11 display panels
The 11a display panel
12 data lines
The 12a data line
13 source electrode drive circuits
The 13a source electrode drive circuit
20 pixels
The 20a pixel
21 red sub-pixel
21a emitting red light unit
22 green sub-pixels
22a green emitting unit
23 blue subpixels
23a blue-light-emitting unit
Embodiment
Fig. 4 shows the process flow diagram of the time field and time sequence control method of light sources of LCD panel of the present invention. the LCD panel that the present invention uses comprises the two-dimensional matrix pixel, each pixel comprises trichromatic luminescence unit, this trichromatic luminescence unit comprises an emitting red light unit, a green emitting unit and a blue-light-emitting unit .LCD panel can receive a vertical synchronizing signal Vsync and a horizontal-drive signal Hsync, wherein, vertical synchronizing signal Vsync can be enabled in each image duration, and horizontal-drive signal Hsync has n trigger pip in each image duration.
Compared to prior art, the present invention provides respectively the trichromatic light source during utilizing 3 sons being cut into (sub_frame) during 4 sons each image duration, provides white light source during also utilizing 1 son.And this white light source is to utilize the while to open trichromatic light source in the lump to form.Owing to all need the trigger pip of the horizontal-drive signal Hsync of equal number during each son, so the frequency of horizontal-drive signal Hsync can be increased to 4 times, and is defined as the high frequency horizontal-drive signal.Frequency as for how with horizontal-drive signal Hsync rises to prior art, no longer repeat specification.
The time field and time sequence control method of light sources of the LCD panel of present embodiment comprises following steps for each frame demonstration.
Step S02: in during first son, open the first primary colors luminescence unit, source electrode drive circuit 13a exports the control data of each row first primary colors image in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal.
Step S04: in during second son, open the second primary colors luminescence unit, source electrode drive circuit 13a exports the control data of each row second primary colors image in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal.
Step S06: in during the 3rd son, open the three primary colors luminescence unit, source electrode drive circuit 13a exports the control data of each row three primary colors image in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal.
Step S08: in during the 4th son, open the three primary colors luminescence unit simultaneously in the lump, source electrode drive circuit 13a exports the control data of the white image of each row in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal.That is, in three steps, only open the luminescence unit of solid color in front, but open the luminescence unit of three colors simultaneously in the lump in step 4.Owing to after the luminescence unit of three primary colors is opened simultaneously, formed white light source, so source electrode drive circuit 13a exports the control data of the white image of each row in the two-dimensional matrix pixel at this moment.
Fig. 5 shows its sequential chart in order to the signal of driving display of time field and time sequence control method of light sources (Timing Chart) of LCD panel among the present invention, and wherein source electrode drive circuit 13a produces output signal Sout.As shown in the drawing, each, Tframe was divided into quarter image duration, was respectively during T2 during T1 during first son, second son, the 3rd son T4 during the T3 and the 4th son.During T1, emitting red light unit 21a is lighted during first son, and output signal Sout exports red compositional data of each row in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal; During T2, green emitting unit 22a is lighted during second son, and output signal Sout exports green compositional data of each row in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal; During T3, blue-light-emitting unit 23a is lighted during the 3rd son, and output signal Sout exports blue compositional data of each row in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal; During the 4th son during T4, emitting red light unit 21a, green emitting unit 22a and blue-light-emitting unit 23a are lighted simultaneously, and output signal Sout exports white content data of each row in the two-dimensional matrix pixel in regular turn according to the high frequency horizontal-drive signal at last.
In addition, though in Fig. 5 embodiment, light source colour during first son during the 4th son is respectively R, G, B, W, but does not limit this order, the user can according to the demand in the design directly the row definition and design first son during during the 4th son in time order.That is, during first son, during second son, during the 3rd son and during the son in during the 4th son (being called Tw temporarily), open first primary lights, second primary lights and three primary colors light source simultaneously in the lump; During other three sons that remove Tw during the son of opening three kinds of light sources in the lump, open first primary lights, second primary lights and described three primary colors light source respectively.For example, during the 4th son, opening W, R, G, B respectively during first son.
Also have, though in Fig. 5 embodiment, during the 4th son, be respectively 1/4 frame time during first son, but also can adjust different ratios according to demand. for example the ratio of R, G, B, W is 1/7,1/7,1/7 and 4/7 frame time, or 2/7,2/7,2/7 and 1/7 frame time etc. but when the time during the 4th son is inequality during first son, the high frequency horizontal-drive signal also will be according to different time scale adjustment. that is, time during each son is short more, and the frequency of pairing high frequency horizontal-drive signal is high more.
A plurality of subframes of a frame among Fig. 6 displayed map 5 embodiment.As Fig. 5 and shown in Figure 6, cut apart at time shaft in the present embodiment red sub-frame Rframe, green sub-frame Gframe are arranged, blue subframe Bframe and white subframe Wframe.Compared to prior art, the display 10a of the present embodiment image display time intervals that increase a white subframe Wframe (white picture) more.As shown in Figure 3, red in the prior art, the green and blue color demonstration time has only 1/3 frame time Tframe respectively.But, show frame time Tframe for up to 1/2 by Fig. 5, Fig. 6 redness of the present invention as can be known, green and blue each color compared to prior art.Because the demonstration time of each color increases, and promptly increases the time that those luminescence units in each pixel are lighted, therefore has higher display brightness.
Cut apart at time shaft in one embodiment of the invention red sub-frame is arranged, green sub-frame, blue subframe and white subframe.Compared to the prior art image display time intervals that increase white subframes (white picture), and increase demonstration time of each color more, that is increase the time that those luminescence units of pixel are lighted, therefore can increase the brightness of display frame.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the time field and time sequence control method of light sources of a LCD panel, this LCD panel has one first primary lights, one second primary lights, one three primary colors light source, the two-dimensional matrix pixel, and one source pole driving circuit, this source electrode drive circuit receives a vertical synchronizing signal and a horizontal-drive signal and will produce a high frequency horizontal-drive signal behind the frequency upgrading of described horizontal-drive signal, this vertical synchronizing signal was enabled in each image duration, and be divided into each image duration during first son, during second son, during the 3rd son and during the 4th son, described time field and time sequence control method of light sources comprises the following step:
During first son, during second son, during the 3rd son and during the son in during the 4th son, open described first primary lights, described second primary lights and described three primary colors light source simultaneously in the lump; During except other three sons during the son of opening three kinds of light sources in the lump, open first primary lights, second primary lights and three primary colors light source respectively;
When opening described first primary lights, described source electrode drive circuit is exported the first primary colors control data that is presented at each row in the described two-dimensional matrix pixel in regular turn according to described high frequency horizontal-drive signal;
When opening described second primary lights, described source electrode drive circuit is exported the second primary colors control data that is presented at each row in the described two-dimensional matrix pixel in regular turn according to described high frequency horizontal-drive signal;
When opening described three primary colors light source, described source electrode drive circuit is exported the three primary colors control data that is presented at each row in the described two-dimensional matrix pixel in regular turn according to described high frequency horizontal-drive signal; And
When opening described first primary lights, described second primary lights and described three primary colors light source in the lump simultaneously, described source electrode drive circuit is exported the white control data that is presented at each row in the described two-dimensional matrix pixel in regular turn according to described high frequency horizontal-drive signal.
2. time field and time sequence control method of light sources as claimed in claim 1 is characterized in that,
During described first son, open described first primary lights;
During described second son, open described second primary lights;
During described the 3rd son, open described three primary colors light source;
During described the 4th son, open described first primary lights, described second primary lights and described three primary colors light source simultaneously in the lump.
3. time field and time sequence control method of light sources as claimed in claim 1 or 2 is characterized in that, described first primary lights, described second primary lights, and described three primary colors light source is respectively red light emitting diodes LED, green LED and blue led.
4. time field and time sequence control method of light sources as claimed in claim 1 or 2 is characterized in that, all equates during described first son, during described second son, during described the 3rd son and during described the 4th son.
5. time field and time sequence control method of light sources as claimed in claim 4 is characterized in that, during described first son, during described second son, be respectively 1/4 frame time during described the 3rd son and during described the 4th son.
6. time field and time sequence control method of light sources as claimed in claim 1 or 2 is characterized in that, during described first son, during described second son, during described the 3rd son with described the 4th son during unequal.
7. time field and time sequence control method of light sources as claimed in claim 6 is characterized in that, during described first son, during described second son, to be respectively during described the 3rd son during 1/7 frame time and described the 4th son be 4/7 frame time.
8. time field and time sequence control method of light sources as claimed in claim 6 is characterized in that, during described first son, during described second son, to be respectively during described the 3rd son during 2/7 frame time and described the 4th son be 1/7 frame time.
9. time field and time sequence control method of light sources as claimed in claim 6, it is characterized in that, during described first son, during described second son, during described the 3rd son with described the 4th son during when unequal, the high frequency horizontal-drive signal also will be according to different time scale adjustment.
10. time field and time sequence control method of light sources as claimed in claim 3 is characterized in that, the frequency of described high frequency horizontal-drive signal is four times of described horizontal-drive signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910221920A CN101707053A (en) | 2009-11-23 | 2009-11-23 | Time field and time sequence control method of light sources of LCD panel |
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| CN200910221920A CN101707053A (en) | 2009-11-23 | 2009-11-23 | Time field and time sequence control method of light sources of LCD panel |
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| CN200910221920A Pending CN101707053A (en) | 2009-11-23 | 2009-11-23 | Time field and time sequence control method of light sources of LCD panel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281447A (en) * | 2011-08-17 | 2011-12-14 | 福建华映显示科技有限公司 | Display and method for white balance correction |
| CN102966881A (en) * | 2011-08-31 | 2013-03-13 | 株式会社东芝 | Light source device, driving device, and electronic device |
| CN103345908A (en) * | 2013-07-19 | 2013-10-09 | 深圳市长江力伟股份有限公司 | Silicon substrate liquid crystal field time series color displaying method and system |
| CN105185308A (en) * | 2015-09-24 | 2015-12-23 | 上海和辉光电有限公司 | Luminescence sequential control method for pixel circuit |
| CN114387935A (en) * | 2022-01-28 | 2022-04-22 | 深圳市科金明电子股份有限公司 | LCD driving method, controller and medium |
| CN114550671A (en) * | 2022-03-09 | 2022-05-27 | 深圳市科金明电子股份有限公司 | LCD driving method, device and controller based on output image format configuration |
-
2009
- 2009-11-23 CN CN200910221920A patent/CN101707053A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281447A (en) * | 2011-08-17 | 2011-12-14 | 福建华映显示科技有限公司 | Display and method for white balance correction |
| CN102281447B (en) * | 2011-08-17 | 2014-01-22 | 福建华映显示科技有限公司 | Display and method for white balance correction |
| CN102966881A (en) * | 2011-08-31 | 2013-03-13 | 株式会社东芝 | Light source device, driving device, and electronic device |
| CN103345908A (en) * | 2013-07-19 | 2013-10-09 | 深圳市长江力伟股份有限公司 | Silicon substrate liquid crystal field time series color displaying method and system |
| CN105185308A (en) * | 2015-09-24 | 2015-12-23 | 上海和辉光电有限公司 | Luminescence sequential control method for pixel circuit |
| CN114387935A (en) * | 2022-01-28 | 2022-04-22 | 深圳市科金明电子股份有限公司 | LCD driving method, controller and medium |
| CN114550671A (en) * | 2022-03-09 | 2022-05-27 | 深圳市科金明电子股份有限公司 | LCD driving method, device and controller based on output image format configuration |
| CN114550671B (en) * | 2022-03-09 | 2022-11-22 | 深圳市科金明电子股份有限公司 | LCD driving method, device and controller based on output image format configuration |
| US11715411B1 (en) | 2022-03-09 | 2023-08-01 | Shenzhen Kejinming Electronic Co., Ltd | LCD drive method, device and controller based on output image format configuration |
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Application publication date: 20100512 |