CN101435935B - Double-field sequence LCD device display method - Google Patents
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- CN101435935B CN101435935B CN2007100481266A CN200710048126A CN101435935B CN 101435935 B CN101435935 B CN 101435935B CN 2007100481266 A CN2007100481266 A CN 2007100481266A CN 200710048126 A CN200710048126 A CN 200710048126A CN 101435935 B CN101435935 B CN 101435935B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 22
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- AXDJCCTWPBKUKL-UHFFFAOYSA-N 4-[(4-aminophenyl)-(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]aniline;hydron;chloride Chemical compound Cl.C1=CC(=N)C(C)=CC1=C(C=1C=CC(N)=CC=1)C1=CC=C(N)C=C1 AXDJCCTWPBKUKL-UHFFFAOYSA-N 0.000 claims description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 7
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- 238000007598 dipping method Methods 0.000 claims description 2
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- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000012466 permeate Substances 0.000 abstract 3
- 235000012730 carminic acid Nutrition 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
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- 239000010409 thin film Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
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Abstract
The invention provides a method for displaying a double-field sequential liquid crystal display. A yellow light filter which can permeate red light and green light, a carmine light filter which can permeate red light and blue light and a cyan light filter which can permeate green light and blue light are arrayed to form a colorful light filter according to arbitrary sequence; in a frame picture between 0 and T2, two sub-frames carry out switch driving on red, green and blue LEDs of a backlight module; and the method improves the utilization efficiency of light and greatly reduces energy consumption of LED. For the prior LED backlight source with the number ratio of the red, the green and the blue LEDs of 1:2:1, the technical proposal can lower the number ratio of the red, the green and the blue LEDs to 1:1:1, reduce the use amount of the green LED and further reduce cost.
Description
Technical field
The present invention relates to a kind of double-field sequence LCD device display method, belong to the LCD Technology field.
Background technology
The ordinary construction of infiltration type colour liquid crystal display device at present as shown in Figure 1.Mainly comprise the backlight module 10 that white light source is provided.Light source commonly used has: white light cold cathode fluorescent lamp (CCFL), White LED and Red, Green, the mixed white light source of Blue monochromatic LED.Backlight module mainly utilizes these light sources that the area source of brightness homogeneous is provided for the liquid crystal panel of top.
The white light process that backlight 10 sends is polaroid 11 down, becomes the polarized light with certain polarization direction.Institute's making alive between thin film transistor (TFT) 18 control electrodes, and this voltage acts on the polarization direction that liquid crystal is controlled polarized light, polarized light sees through corresponding colored filter 19 backs and forms monochromatic polarized light, if polarized light can penetrate upper polarizer 12, then demonstrates corresponding color; Electric field intensity difference, the deflection angle of liquid crystal molecule are also different, and the light intensity that sees through is different, and the brightness of demonstration is also different.The combination of the different light intensity by three kinds of colors of RGB shows motley image.
Currently used R, G, B colored filter are the absorption-type chromatographs, when white light incides colored filter, have only the light of respective color can see through that (for example: ruddiness), and the light of other 2 kinds of colors (for example: green glow and blue light) all is absorbed, and the utilization ratio of light has only about 30%.This is the factor that influences color LCD light utilization ratio maximum at present.Make the whole light transmission rate of common LCD have only 4%-10%.
For this reason, removal R has appearred, G, the field preface scanning lcd technology of B colored filter, different with common LCD is: in each frame picture, backlight sends ruddiness, green glow and blue light respectively in order, when sending monochromatic light (for example ruddiness), adds on the pixel electrode of corresponding liquid crystal that the voltage (for example: corresponding red luminance voltage) of corresponding color is controlled corresponding bright.Finally utilize the persistence of vision effect of human eye to obtain the colored purpose that shows.Utilize this technology as can be seen, the utilization ratio of light can be increased to original 3 times, but the sweep frequency of while liquid crystal also is increased to 3 times of the common display technology.Can't eliminate visual flicker and other counter productive fully with regard to present liquid crystal shutter slewing rate.
In a pixel, form Red in addition, Green, Blue, the display technique of White four sub-pixels.(wherein the White sub-pixel does not add chromatograph), independently its GTG of White sub-pixel can effectively be controlled the color saturation of display frame also by liquid crystal shutter.Because the White sub-pixel does not have chromatograph, can improve the light transmission efficiency of LCD greatly, but owing to increased a sub-pixel, the resolution of LCD also can reduce.Under the identical situation of resolution, other R, G, the glazed area of B sub-pixel also can correspondingly reduce.Each pixel also needs many electrodes to be used to control the bright dark of White sub-pixel in addition, and the number of corresponding driving IC also will increase and then bring the rising on the cost.
In addition, the patent of US20070139352 has proposed two field sequential liquid crystal display techniques, arranging as shown in Figure 2 of colored filter, shown in Figure 3 is its type of drive backlight, the mode that it adds a White sub-pixel by 2 monochromatic sub-pixels can be avoided the shortcoming of above-mentioned two kinds of methods, can effectively utilize light again simultaneously.But in first subframe, 0～T1 (being blue light among the figure), the utilization ratio of light does not increase, and just in second subframe T1～T2, the utilization ratio in complete bright time of RGB is only 2 times that common LCD shows.Less than 2 times, and whole lighting efficiency is relevant with (being blue light among the figure) fluorescent lifetime of first subframe for the utilization ratio of light generally.
Summary of the invention
In order to solve above-mentioned defective of the prior art, the invention provides a kind of pair of field sequential liquid crystal display packing, it is high to solve in the available liquid crystal display technique the whole light transmission rate of LCD, the defective that the light utilization ratio is not high.
To achieve these goals, the present invention has adopted following technical scheme: can see through the yellow filter of ruddiness and green glow, the carmetta optical filter that can see through red light and blue light, the cyan optical filter that can see through green light and blue light and rearrange colored filter in any order; At a frame picture 0～T2 in the time, 2 subframes of branch are carried out switch drive to the red, green and blue LED of backlight module, in the time of first subframe, 0～T1, backlight module sends gold-tinted by colored filter, fuchsin light or cyan light wherein a kind of, liquid crystal each sub-pixel was coupled with corresponding voltage and carried out brilliance control this moment, second subframe T1～T2 in the time backlight module be emitted in a kind of of all the other two kinds of light of not sending in first subframe by colored filter, this moment, liquid crystal sub-pixel also was coupled with the brightness that corresponding voltage is regulated bright dipping, and finally the combination of the coloured light by this two subframe reaches the purpose of display color picture.
Send by colored filter under the situation of gold-tinted at backlight module, red and green LED lights, and sends the situation of cyan light at backlight module by colored filter, and red and blue LED lights.The T1 value is T2/2.
The concrete steps of double-field sequence LCD device display method are:
Step 1: from the outside acquisition of LCD R to display, G, the data-signal of B image,
Step 2: the data-signal that the outside is obtained is input to TCon and carries out data processing, is converted into the new data signal order of the corresponding gold-tinteds of 2 subframes, fuchsin light, blue or green light,
Step 3: in 0～T1 subframe, the first subframe picture gold-tinted, fuchsin light, the blue or green light data of handling well output on the corresponding pixel electrode, simultaneously the redness and the green LED of backlight module are lighted, send sodium yellow, yellow filter in the yellow pixel sees through fully for sodium yellow, and carmetta optical filter in fuchsin and the cyan pixel and cyan optical filter see through ruddiness and green glow respectively
Step 4: in T1～T2 subframe: the second subframe picture gold-tinted, fuchsin light, the blue or green light data that will handle well output on the corresponding pixel electrode, the blueness and the green LED of backlight module are lighted simultaneously, send cyan light, yellow filter carmetta optical filter in the yellow and carmetta sub-pixel and respectively through green glow and blue light, the cyan optical filter in the cyan pixel then sees through fully for cyan light.
Adopt technical scheme of the present invention, after step 4, the coloured light that 2 subframes are controlled respectively just is combined into us and wants the color and the brightness that obtain through described step 1.Repeating for 1～4 step also is generalized to whole image, so just can obtain colour picture that we want.From 3～4 steps, we can see that in whole procedure for displaying, (R, G, light B) are all through 2 sub-pixels, thereby the utilization ratio of light can reach 2 times of common LCD for every kind of color composition.And owing to green glow all sees through in 2 subframes, so the brightness ratio of RGB is: 1: 2: 1, for using red, green and blue LED number ratio to be: for 1: 2: 1 the backlight, the quantity of green LED can reduce, thereby reduces cost.
The present invention has improved the utilization ratio of light, greatly reduces the energy consumption of LCD.For traditional red, green and blue LED quantity ratio be: for 1: 2: 1 the LED-backlit source, adopt technical solution of the present invention that the ratio of red, green and blue LED quantity can be low to moderate 1: 1: 1, reduce the usage quantity of green LED, and then reduce cost.
Description of drawings
The ordinary construction of the present infiltration type colour liquid crystal display device of Fig. 1.
The colorful filter structure that Fig. 2 US20070139352 proposes.
The backlight driver mode that Fig. 3 US20070139352 proposes.
Fig. 4 is a colorful filter structure of the present invention.
Fig. 5 is the backlight controlling and driving mode in the embodiment of the invention.
Fig. 6 is the treatment scheme that image shows in the embodiment of the invention.
Among the figure: backlight module 10, following polaroid 11, upper polarizer 12, lower glass substrate 13, top glass substrate 14, top electrode 15, bottom electrode 16, liquid crystal layer 17, thin film transistor (TFT) 18, colored filter 19, black matrix 20, horizontal scanning line 22, data scanning line 21, yellow filter 31, carmetta optical filter 32, cyan optical filter 33
Embodiment
Specify the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 4, the present invention rearrange colored filter 19 in any order by the yellow filter 31 that can see through ruddiness and green glow, the carmetta optical filter 32 that can see through red light and blue light, the cyan optical filter 33 that can see through green light and blue light.
As shown in Figure 5, first subframe, 0～T1 lights red R and green G LED simultaneously, and second subframe T1～T2 puts sapphirine B and green G LED simultaneously.Among the embodiment as Fig. 5, first subframe, 0～T1 shows sodium yellow like this, and second subframe T1～T2 then shows cyan light.The general value of T1 is that T2/2 gets final product.
Be directed to a picture element, concrete Flame Image Process and flow for displaying as shown in Figure 6,
The first step: obtain R to display from the outside, G, the data-signal of B image.
Second step: the outside data-signal that obtains is input to TCon and carries out data processing, is converted into the new data signal of the corresponding Huang of 2 subframes, fuchsin, green grass or young crops.Order: among the figure in 0～T1 subframe, being Data11 corresponding to the data-signal of Huang, is Data12 corresponding to the data-signal of fuchsin, is Data13 corresponding to the data-signal of cyan.Similar, in T1～T2 subframe, Huang, fuchsin, blue or green other respective signal of branch are Data21, Data22, Data23.
The 3rd step: in 0～T1 subframe: the first subframe picture data Data11～Data13 that handles well outputs on the corresponding pixel electrode, simultaneously the redness and the green LED of backlight is lighted, and sends sodium yellow.(because liquid crystal molecule rotates slower, also can suitably postpone a period of time between signal input and the backlight lighting) at this moment: yellow pixel sees through fully for sodium yellow, and fuchsin and cyan pixel see through ruddiness and green glow respectively.
The 4th step: in T1～T2 subframe: the second subframe picture data that will handle well outputs on the corresponding pixel electrode, the blueness and the green LED of backlight are lighted simultaneously, send cyan light (, also can suitably postpone a period of time between signal input and the backlight lighting) because the liquid crystal molecule rotation is slower.At this moment: yellow and carmetta sub-pixel sees through green glow and blue light respectively, and cyan pixel then sees through fully for cyan light.
Claims (5)
1. double-field sequence LCD device display method is characterized in that: can see through the yellow filter (31) of ruddiness and green glow, the carmetta optical filter (32) that can see through red light and blue light, the cyan optical filter (33) that can see through green light and blue light and rearrange colored filter (19) in any order; At a frame picture 0～T2 in the time, 2 subframes of branch are carried out switch drive to the red, green and blue LED of backlight module (10), in the time of first subframe, 0～T1, backlight module (10) sends gold-tinted by colored filter (19), fuchsin light or cyan light wherein a kind of, liquid crystal each sub-pixel was coupled with corresponding voltage and carried out brilliance control this moment, second subframe T1～T2 in the time backlight module (10) be emitted in a kind of of all the other two kinds of light of not sending in first subframe by colored filter (19), this moment, liquid crystal sub-pixel also was coupled with the brightness that corresponding voltage is regulated bright dipping, and finally the combination of the coloured light by this two subframe reaches the purpose of display color picture.
2. double-field sequence LCD device display method as claimed in claim 1, it is characterized in that, send under the situation of gold-tinted by colored filter (19) at backlight module (10), red and green LED lights, send the situation of cyan light at backlight module (10) by colored filter (19), red and blue LED lights.
3. double-field sequence LCD device display method as claimed in claim 1 is characterized in that, the T1 value is T2/2.
4. double-field sequence LCD device display method as claimed in claim 1 is characterized in that, in the time, the concrete steps of double-field sequence LCD device display method are at a described frame picture 0～T2:
Step 1: from the outside acquisition of LCD R to display, G, the data-signal of B image,
Step 2: the data-signal that the outside is obtained is input to TCon and carries out data processing, is converted into the new data signal order of the corresponding gold-tinteds of 2 subframes, fuchsin light, blue or green light,
Step 3: in 0～T1 subframe, the first subframe picture gold-tinted, fuchsin light, the blue or green light data of handling well output on the corresponding pixel electrode, simultaneously the redness and the green LED of backlight module (10) are lighted, send sodium yellow, yellow filter in the yellow pixel (31) sees through fully for sodium yellow, and carmetta optical filter (32) in fuchsin and the cyan pixel and cyan optical filter (33) see through ruddiness and green glow respectively
Step 4: in T1～T2 subframe: the second subframe picture gold-tinted, fuchsin light, the blue or green light data that will handle well output on the corresponding pixel electrode, the blueness and the green LED of backlight module (10) are lighted simultaneously, send cyan light, yellow filter (31) carmetta optical filter (32) in the yellow and carmetta sub-pixel and respectively through green glow and blue light, the cyan optical filter (33) in the cyan pixel then sees through fully for cyan light.
5. double-field sequence LCD device display method as claimed in claim 1, it is characterized in that, each subframe is all lighted the LED of two kinds of colors simultaneously, and the LED of a kind of color wherein all shows in two subframes, and the LED of other two kinds of different colours shows respectively in two subframes.
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| CN2007100481266A CN101435935B (en) | 2007-11-13 | 2007-11-13 | Double-field sequence LCD device display method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2557453A4 (en) * | 2010-04-07 | 2013-04-24 | Sharp Kk | Color image display device and control method thereof |
| JP5708104B2 (en) * | 2011-03-22 | 2015-04-30 | セイコーエプソン株式会社 | Display device and projector |
| CN103956144B (en) * | 2013-12-13 | 2016-06-08 | 天津三星电子有限公司 | A kind of display drive method, device and display |
| CN103901667B (en) * | 2014-03-27 | 2017-09-12 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN104036739B (en) * | 2014-05-08 | 2016-05-25 | 深圳市华星光电技术有限公司 | A kind of field sequential liquid crystal display drive method and display unit |
| CN104036748B (en) * | 2014-06-20 | 2016-06-08 | 深圳市华星光电技术有限公司 | Field color sequential display and color control method thereof |
| CN104112436B (en) * | 2014-07-07 | 2016-05-11 | 复旦大学 | A kind of color liquid crystal method for displaying image that adopts colored filter and an order |
| CN104820315B (en) * | 2015-05-29 | 2018-06-05 | 京东方科技集团股份有限公司 | A kind of sequence display panel, field sequential display device and driving method |
| CN110444574B (en) * | 2019-08-14 | 2022-01-25 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN113917732A (en) * | 2020-07-07 | 2022-01-11 | 苏州佳世达电通有限公司 | Display device |
| CN113986181B (en) * | 2021-10-28 | 2023-11-14 | 惠州视维新技术有限公司 | Display adjustment method, device, electronic equipment and storage medium |
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| CN1854830A (en) * | 2005-04-18 | 2006-11-01 | 安华高科技杰纳勒尔Ip（新加坡）私人有限公司 | Display device |
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| CN1854830A (en) * | 2005-04-18 | 2006-11-01 | 安华高科技杰纳勒尔Ip（新加坡）私人有限公司 | Display device |
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