CN101866636A - Field color gamut liquid crystal display - Google Patents
Field color gamut liquid crystal display Download PDFInfo
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- CN101866636A CN101866636A CN201010200927A CN201010200927A CN101866636A CN 101866636 A CN101866636 A CN 101866636A CN 201010200927 A CN201010200927 A CN 201010200927A CN 201010200927 A CN201010200927 A CN 201010200927A CN 101866636 A CN101866636 A CN 101866636A
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Abstract
The invention provides a field color gamut liquid crystal display, comprising a backlight. The backlight consists of three light emitting diodes sequentially emitting red light, green light and blue light, and when a red sub-screen, a green sub-screen and a blue sub-screen are displayed, the brightness of the backlight is determined by lookup table of a current liquid crystal signal and the liquid crystal signal of a former picture. By adopting the field color gamut liquid crystal display, table lookup is carried out on the current liquid crystal signal and the liquid crystal signal of the former picture, and a product of the original backlight signal and the current liquid crystal signal is divided by the result of the lookup table to obtain a corrected backlight signal. Therefore, the phenomenon of color error or color offset caused by low response speed of liquid crystal is eliminated through changing the brightness of the backlight.
Description
Technical field
The present invention relates to the Driving technique of LCD, relate in particular to the luminance compensation technology of backlight in the field color gamut liquid crystal display.
Background technology
Field color gamut liquid crystal display (Field Sequential Color Liquid CrystalDisplay, FSC-LCD) be a kind of ultra-thin and have a LCD of high resolving power and high color saturation, its principle mainly is to show sprites such as redness, green and blueness in regular turn, persist by human eye vision, on retina, utilize the time mixed-color method three primary colors that add up to synthesize and present coloured image.Because this display need not to use colored filter, has greatly improved light transmittance, has reduced power consumption and manufacturing cost, in addition, field color gamut liquid crystal display has significantly increased pixel aperture ratio, to improve the resolution and the color saturation of display image.
On the other hand, disappear, also exist a serious problem-Se and separate (CBU, Color Break-Up) though field color gamut liquid crystal display has better development properties and can significantly reduce merit.This phenomenon often occurs in human eye when watching object that one relative velocity is arranged, and for example, human eye rocks or picture when moving, and the domain imaging of all kinds that causes same picture finally causes object edge that similar rainbow colour band is arranged in amphiblestroid diverse location.The CBU phenomenon not only can reduce picture quality, when watching for a long time even can cause eye fatigue.
In view of this, how to design a kind of novel field color gamut liquid crystal display, the color mistake when carrying out the image demonstration to solve and to eliminate this display is the problem that person skilled faces.
Summary of the invention
At the existing above-mentioned defective when the display image of field color gamut liquid crystal display in the prior art, the invention provides a kind of brand-new field color gamut liquid crystal display, this display architectures can effectively be eliminated FSC-LCD because of the liquid crystal reaction velocity causes color mistake phenomenon inadequately soon, improves user's the Experience Degree of viewing and admiring.
According to an aspect of the present invention, a kind of field color gamut liquid crystal display is provided, it comprises a backlight, this backlight is made up of three light emitting diodes that send red light, green light and blue light in regular turn, and, when showing red sprite, green sprite and blue sprite, the brightness of backlight is tabled look-up definite by the liquid crystal signal of a current liquid crystal signal and a last picture.
Preferably, after current liquid crystal signal and checking result be divided by, multiply each other with former signal backlight again, to obtain the current backlight signal of backlight.
Preferably, field color gamut liquid crystal display is a colour gamut Thin Film Transistor-LCD.
Preferably, the brightness of image seen from LCD of human eye is the multiplied result of the light transmittance of the brightness of backlight and liquid crystal.
Adopt field color gamut liquid crystal display of the present invention, the liquid crystal signal of a current liquid crystal signal and a last picture is tabled look-up, again the product of original signal backlight and current liquid crystal signal and the lookup result in the look-up table are divided by, signal backlight after obtaining proofreading and correct, thus eliminate because of fast inadequately color mistake or the color offset phenomenon that causes of liquid crystal reaction velocity by the brightness that changes backlight.
Description of drawings
The reader will become apparent various aspects of the present invention after the reference accompanying drawing has been read the specific embodiment of the present invention.Wherein,
Fig. 1 illustrates according to field color gamut liquid crystal display of the present invention, utilizes the liquid crystal signal of two adjacent pictures to table look-up with the principle schematic of the signal backlight of compensate for backlight.
Embodiment
With reference to the accompanying drawings, the specific embodiment of the present invention is described in further detail.
In the prior art, in order to solve the look segregation phenomenon that FSC-LCD produces, the someone has proposed a kind of Stencil algorithm.With regard to traditional field color gamut liquid crystal display, when between human eye and image relative velocity being arranged, can see that red (R), green (G) and blue (B) three colour fields stagger and formed the look segregation phenomenon on retina, for this reason, the main starting point of Stencil algorithm is, attempting reducing the light intensity of R, G, B three colour fields, the colour band intensity of pulling out because of staggering on retina is reduced, separating so that suppress look.Meanwhile, for keeping the original image picture, insert main intensity and coarse color that another colour field shows general image, original R, G, B three colour fields only need show that lower light intensity just can demonstrate correct color image content.
More specifically, local control backlight module, obtain the liquid crystal signal and the signal backlight of R, G, B three colour fields respectively, get minimum value in R, G, the B liquid crystal signal value as the liquid crystal signal of first colour field, its colored backlight of arranging in pairs or groups, form first colour picture of Stencil type FSC-LCD, the liquid crystal signal of second colour field is that original red liquid crystal signal deducts minimum liquid crystal signal, thereby the red distribution backlight of arranging in pairs or groups becomes red sub-colour field picture, by that analogy, green and blue sub-colour field also calculation process thus learn its color picture.
Yet, it needs to be noted that current Stencil algorithm is in design process, regarded the reaction velocity of liquid crystal as desirable situation, promptly the response time of liquid crystal is almost equal to zero, still, in actual conditions, the reaction velocity of liquid crystal is limited, infinite fast in the time of can not reaching ideal.Thus, for example, sky should be low GTG in second picture of FSC-LCD, but the sky that is subject to its previous picture is a high gray, liquid crystal can't reach the target gray scale value in a sprite, sky too many redness will occur and can not show correct color (as blueness).
At the above-mentioned deficiency that the Stencil algorithm is occurred, Fig. 1 illustrates according to field color gamut liquid crystal display of the present invention, utilizes the liquid crystal signal of two adjacent pictures to table look-up with the principle schematic of the signal backlight of compensate for backlight.With reference to Fig. 1, in short, its cardinal principle is intended to, and the signal former backlight of backlight is proofreaied and correct, and the current backlight signal is characterized by the function of former signal backlight by specific mathematical model.
As shown in Figure 1, the resolution of supposing picture is 1920*1080, the backlight subarea of backlight is 24*24, at first current liquid crystal signal 203 is sent in the look-up table 205 with a last liquid crystal signal 201, preferably, look-up table 205 is the palettes in the display, obtains lookup result 207 by tabling look-up.Then, current liquid crystal signal 203 is divided by with lookup result 207, and based on the proportionate relationship between screen resolution and the backlight subarea, the result after will being divided by averages, thereby obtain the correction coefficient of the signal backlight in each backlight subarea.At last, former signal 10 backlight is multiplied each other with correction coefficient, the product of gained is as current backlight signal 30.
Adopt field color gamut liquid crystal display of the present invention, the liquid crystal signal of a current liquid crystal signal and a last picture is tabled look-up, again the product of original signal backlight and current liquid crystal signal and the lookup result in the look-up table are divided by, signal backlight after obtaining proofreading and correct, thus eliminate because of fast inadequately color mistake or the color offset phenomenon that causes of liquid crystal reaction velocity by the brightness that changes backlight.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replace all drop in claims of the present invention institute restricted portion.
Claims (4)
1. field color gamut liquid crystal display, it comprises a backlight, it is characterized in that, described backlight is made up of three light emitting diodes that send red light, green light and blue light in regular turn, and, when showing red sprite, green sprite and blue sprite, the brightness of backlight is tabled look-up definite by the liquid crystal signal of a current liquid crystal signal and a last picture.
2. field color gamut liquid crystal display as claimed in claim 1 is characterized in that, after current liquid crystal signal and checking result are divided by, multiplies each other with former signal backlight, to obtain the current backlight signal of backlight again.
3. field color gamut liquid crystal display as claimed in claim 1 is characterized in that, described field color gamut liquid crystal display is a colour gamut Thin Film Transistor-LCD.
4. field color gamut liquid crystal display as claimed in claim 1 is characterized in that, the brightness of image that human eye is seen from described LCD is the multiplied result of the light transmittance of the brightness of described backlight and liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010200927A CN101866636A (en) | 2010-06-09 | 2010-06-09 | Field color gamut liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010200927A CN101866636A (en) | 2010-06-09 | 2010-06-09 | Field color gamut liquid crystal display |
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| CN101866636A true CN101866636A (en) | 2010-10-20 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036733A (en) * | 2013-03-04 | 2014-09-10 | 刘鸿达 | Display control method of display apparatus |
| CN104932143A (en) * | 2015-06-17 | 2015-09-23 | 衷健 | Color visual effect device and color visual effect generation method |
| CN106782375A (en) * | 2016-12-27 | 2017-05-31 | 惠科股份有限公司 | Liquid crystal display device and driving method thereof |
| CN106847205A (en) * | 2016-12-27 | 2017-06-13 | 惠科股份有限公司 | Liquid crystal display device and driving method thereof |
| CN107301852A (en) * | 2017-08-24 | 2017-10-27 | 惠科股份有限公司 | Driving device and method of display panel and display device |
| CN108206016A (en) * | 2018-01-02 | 2018-06-26 | 京东方科技集团股份有限公司 | Pixel unit and its driving method, display device |
| WO2019019312A1 (en) * | 2017-07-24 | 2019-01-31 | 惠科股份有限公司 | Driving method and driving device for display panel, and display device |
| CN114005417A (en) * | 2021-11-16 | 2022-02-01 | 北京显芯科技有限公司 | Method and device for adjusting brightness and display equipment |
-
2010
- 2010-06-09 CN CN201010200927A patent/CN101866636A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104036733A (en) * | 2013-03-04 | 2014-09-10 | 刘鸿达 | Display control method of display apparatus |
| CN104036733B (en) * | 2013-03-04 | 2017-04-26 | 刘鸿达 | Display control method of display apparatus |
| CN104932143A (en) * | 2015-06-17 | 2015-09-23 | 衷健 | Color visual effect device and color visual effect generation method |
| CN106782375B (en) * | 2016-12-27 | 2018-02-13 | 惠科股份有限公司 | Liquid crystal display device and driving method thereof |
| CN106847205A (en) * | 2016-12-27 | 2017-06-13 | 惠科股份有限公司 | Liquid crystal display device and driving method thereof |
| CN106782375A (en) * | 2016-12-27 | 2017-05-31 | 惠科股份有限公司 | Liquid crystal display device and driving method thereof |
| US10546543B2 (en) | 2016-12-27 | 2020-01-28 | HKC Corporation Limited | Liquid crystal display device and method for driving the same |
| US10573251B2 (en) | 2016-12-27 | 2020-02-25 | HKC Corporation Limited | Liquid crystal display device and method for driving the same |
| WO2019019312A1 (en) * | 2017-07-24 | 2019-01-31 | 惠科股份有限公司 | Driving method and driving device for display panel, and display device |
| CN107301852A (en) * | 2017-08-24 | 2017-10-27 | 惠科股份有限公司 | Driving device and method of display panel and display device |
| WO2019037347A1 (en) * | 2017-08-24 | 2019-02-28 | 惠科股份有限公司 | Drive device and drive method for display panel, and display device |
| CN108206016A (en) * | 2018-01-02 | 2018-06-26 | 京东方科技集团股份有限公司 | Pixel unit and its driving method, display device |
| CN114005417A (en) * | 2021-11-16 | 2022-02-01 | 北京显芯科技有限公司 | Method and device for adjusting brightness and display equipment |
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Application publication date: 20101020 |