CN1831926A - Liquid crystal display and display method of color image and method for controlling light source - Google Patents
Liquid crystal display and display method of color image and method for controlling light source Download PDFInfo
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- CN1831926A CN1831926A CN 200610074879 CN200610074879A CN1831926A CN 1831926 A CN1831926 A CN 1831926A CN 200610074879 CN200610074879 CN 200610074879 CN 200610074879 A CN200610074879 A CN 200610074879A CN 1831926 A CN1831926 A CN 1831926A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 24
- 239000003086 colorant Substances 0.000 claims description 32
- 230000000694 effects Effects 0.000 claims description 15
- 238000012856 packing Methods 0.000 claims description 15
- 239000002932 luster Substances 0.000 claims description 6
- 230000002688 persistence Effects 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 11
- 230000008676 import Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- 241001062009 Indigofera Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Abstract
A liquid crystal display containing multiple different colored light sources and having a control device uses said control device to control multiple different colored light sources to light at different time on different period for obtaining desired white balance of light.
Description
Technical field
The present invention relates to a kind of LCD, particularly relate to a kind of LCD, its main composition color is light on and off in the different periods respectively at short notice, and produce full-color effect by the effect that human eye vision persists.
Background technology
LCD (Liquid Crystal Display; LCD) have advantages such as low operating voltage, low power consumption rate, the existing recently trend that replaces originally thick and heavy CRT screen gradually.
Please also refer to Fig. 1, reach Fig. 2.Fig. 1 is in the Prior Art, the video picture synoptic diagram of general liquid crystal panel.Fig. 2 is the synoptic diagram of each pixel image among Fig. 1.Previous LCD comprises liquid crystal panel 2 and backlight 3.Be formed with a plurality of pixels 20 on liquid crystal panel 2 surfaces, and each pixel 20 is made of three sub-pixels of red, green, blue.Be embedded with the colored filter 21,22,23 of three kinds of colors of red, green, blue on each sub-pixel respectively.Backlight 3 is generally white light source.By the irradiation of backlight 3, after the colour filter of the colored filter 21,22,23 of three kinds of colors of process red, green, blue, can obtain red, blue, green three kinds of colors respectively.
By scanning the input of signal and data-signal, can control the liquid crystal of each sub-pixel, make three kinds of colors of its red, green, blue of exporting different brightness simultaneously, and colour mixture becomes the various colors that human eye can be differentiated.In order to prevent that the light that backlight exposes on the colored filter from can interfere with each other, and can be provided with a light shield layer (BM) again between each colored filter.
Yet the configuration mode of this set light shield layer can make the available aperture opening ratio of light source reduce, and can reduce optical efficiency, increases the consumption of energy.Therefore, just the someone proposes to show effectively respectively the versicolor practice in different time.See also Fig. 3, as shown in FIG., the picture frame time (frame) is divided into three little periods, and this three periods show redness, green, and the light source of blue three kinds of colors respectively.Because the effect that persists of human eye vision, the full-color colour systems that these three kinds of color interpretations can be become mix, but not three kinds of colors independently.
This practice that in different time, shows different colours, needn't use colored filter, and allow human eye that the full-color practice of experiencing (color sequence) can be arranged, use the mode of colored filter compared to general LCD, except that can promoting about three times resolution, also can reduce cost of manufacture, save energy resource consumption and improve aperture opening ratio because of omitting colored filter.
Yet, as shown in Figure 3, this luminous mode, the fluorescent lifetime of every kind of color is all identical, the white light that mixes by the red, green, blue in the light source, if with as the standard of evaluation deviation is slightly arranged with International Commission on Illumination (CIE) colour gamut coordinate, then be difficult for the white balance of the standard of being adjusted to, and then the mixed light of other color produced error.
Summary of the invention
The invention provides a kind of LCD, comprise: a plurality of light sources of different colors; An and control device.It is luminous with the different working time (duty cycle) in the different periods respectively that this control device is used for controlling these light sources of different colors.The color and luster effect that makes these a plurality of light sources of different colors can present overlapping addition by the persistence of vision of human eye effect reaches the white balance of expectation.
The present invention also provides a kind of display packing of coloured image.This method has comprised: picture frame is in the time for the first time one, and the light source of one first color continues luminous one first period; And one for the second time picture frame is in the time, a light source that is different from second color of first color continues luminous one second period.Wherein, this picture frame time first time and this secondary picture frame time are not overlapping at that time, and the time span of the time span of this first period and this second period is inequality, and the color and luster effect that makes these a plurality of light sources of different colors can present overlapping addition by the persistence of vision of human eye effect reaches the white balance of expectation.
In addition, the present invention more provides a kind of method of controlling the light source of display panels.This method has comprised: according to the tone of the light that a plurality of light source sent of this display panels, adjust the work period of these light sources.
Description of drawings
Fig. 1 is in the Prior Art, the video picture synoptic diagram of general liquid crystal panel;
Fig. 2 is the synoptic diagram of each pixel image among Fig. 1;
Fig. 3 is in the Prior Art, shows the synoptic diagram of the shades of colour practice in different time effectively;
Fig. 4 is the synoptic diagram of LCD of the present invention;
Fig. 5 is the video picture synoptic diagram of the liquid crystal panel of Fig. 4 LCD;
Fig. 6 is the synoptic diagram of each pixel image among Fig. 5;
Fig. 7 is according to the present invention to Figure 11, control these light sources of different colors respectively in the different periods with the different embodiment of luminous sequential chart of different working time.
The simple symbol explanation
1 LCD
2 liquid crystal panels
20 pixels
21 colored filters (red)
22 colored filters (green)
23 colored filters (indigo plant)
3 backlights
The BM light shield layer
4 LCD
5 liquid crystal panels
50 pixels
51 thin film transistor (TFT)s
6 backlight modules
61 red light sources
62 green light sources
63 blue-light sources
Embodiment
Fig. 4 is the synoptic diagram of LCD 1 of the present invention.Fig. 5 is the video picture synoptic diagram of the liquid crystal panel 5 of LCD 1.Fig. 6 is the synoptic diagram of each pixel image among Fig. 5.Please consult Fig. 5, Fig. 6 simultaneously.As shown in FIG., the LCD 4 of " method of the light source of the display packing of LCD and coloured image and control display panels " of the present invention can be divided into backlight module 6 simply, reach 5 two parts of liquid crystal panel.
Backlight module 6 partly, have a plurality of light sources of different colors, be divided into redness (R) 61, green (G) 62, blue (B) 63 3 kinds of light sources of different colors in the present embodiment, yet also can be two kinds of light sources of different colors actually, as light source blue, orange.Backlight module 6 also has a control device, and it is luminous with the different working time (duty cycle) in the different periods respectively to control these light sources of different colors.
Be formed with a plurality of pixels 50 on liquid crystal panel 5 surfaces, and each pixel 50 is simultaneously by backlight redness (R) 61, green (G) 62, blue (B) 63 3 kinds of light sources of different colors irradiations.Each pixel 50 has a thin film transistor (TFT) 51, is used for controlling the exposure intensity of three kinds of colors.By scanning signal and data-signal inputs to thin film transistor (TFT), can control the liquid crystal of each pixel, under different colors respectively by different brightness.The color and luster effect that makes these a plurality of light sources of different colors can present overlapping addition by the persistence of vision of human eye effect blends the expection color.Certainly, the color that mixes this moment has also comprised and will adjust the white balance that becomes the CIE standard value.
Fig. 7 is above-mentioned control device to Figure 11, control these light sources of different colors respectively in the different periods with luminous sequential chart of different working time.Fig. 7 is first kind of embodiment of the present invention's " method of the light source of the display packing of LCD and coloured image and control display panels ".As shown in FIG., picture frame time can be distinguished into the picture frame times three times, and these three picture frame time is controlled the luminous of the redness (R) 61 of backlight, green (G) 62, blue (B) 63 3 kinds of different colours respectively.
For instance, if this panel pixels number is 1280 * 768, when first time picture frame time begins, can be by scanning signal and data-signal, respectively to this 768 pixel that is listed as, import the signal that should be subjected to liquid crystal rotation shading at red light source respectively in regular turn, red (R) 61 light sources of control subsequently are luminous in one first period.Then enter second picture frame time, equally can be earlier by scanning signal and data-signal, to the pixel of these 768 row, import green light source in regular turn and should be subjected to liquid crystal to rotate the signal of shading respectively respectively, it is luminous in one second period then just can to control green (G) 62 light sources.Enter the 3rd picture frame time, equally can be earlier by scanning signal and data-signal, to the pixel of these 768 row, import blue-light source in regular turn and should be subjected to liquid crystal to rotate the signal of shading respectively respectively, it is luminous in one the 3rd period then just can to control blueness (B) 63 light sources.
What will pay special attention to here is, the fluorescent lifetime of three kinds of colour light sources is incomplete same, that is to say, the time span of first period, second period and the 3rd period not exclusively is the same.Because these three colors fluorescent lifetime each other is very approaching, therefore human eye passes through to adjust each other fluorescent lifetime respectively, and reaches the white balance of expectation easily because of the effect of persistence of vision makes these a plurality of light sources of different colors present the color and luster effect of overlapping addition.
Fig. 8 is second kind of embodiment of the present invention's " method of the light source of the display packing of LCD and coloured image and control display panels ".As shown in FIG., except the time span of first period, second period and the 3rd period was incomplete same, each light source luminous intensity each other also can be different.In the drawings, the intensity of green light source intensity the strongest, red light source is taken second place, and the intensity of blue-light source is for the most weak.
Fig. 9 is the third embodiment of the present invention's " method of the light source of the display packing of LCD and coloured image and control display panels ".As shown in FIG., except the time span of first period, second period and the 3rd period was incomplete same, the starting time of each period was next to time (Tlc) that corresponding pixel receives signal that liquid crystal rotates shading, liquid crystal actual rotation afterwards.Certainly, each color this moment relative intensity to each other also can be different.
Figure 10 is the 4th kind of embodiment of the present invention's " method of the light source of the display packing of LCD and coloured image and control display panels ".As shown in FIG., except the time span of first period, second period and the 3rd period is incomplete same, the ending time of each period, and then time of beginning picture frame time next time.Certainly, each color this moment relative intensity to each other also can be different.
Figure 11 is the 5th kind of embodiment of the present invention's " method of the light source of the display packing of LCD and coloured image and control display panels ".As shown in FIG., except the time span of first period, second period and the 3rd period is incomplete same, the point midway of each period, be positioned at and scan signal and data-signal, respectively to these pixels import in regular turn colour light source should be subjected to respectively liquid crystal rotate shading signal, liquid crystal actual rotation time (Tlc) afterwards, and before picture frame begins next time, the mid point of this section time interval.
In sum, fluorescent lifetime compared to every kind of color is all identical, is difficult for the mode of the white balance of the standard of being adjusted to, and the present invention passes through the shades of colour incomplete same mode of discovery time each other, can be easy to be adjusted to desired white balance, so more accurate to the mixed light of other different colours.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (23)
1, a kind of LCD comprises:
A plurality of light sources of different colors; And
Control device, it is luminous with the different working time in the different periods respectively to be used for controlling these light sources of different colors, and the color and luster effect that makes these a plurality of light sources of different colors can present overlapping addition by the persistence of vision of human eye effect reaches the white balance of expectation.
2, display as claimed in claim 1, these a plurality of light sources of different colors wherein, the light source with first kind of color, and the light source of second kind of color.
3, display as claimed in claim 2, wherein the light source of this first kind of color is a blue light, the light source of this second kind of color is an orange light.
4, display as claimed in claim 2, these a plurality of light sources of different colors wherein, the light source that also has the 3rd color.
5, display as claimed in claim 4, wherein the light source of this first kind of color is a red light, the light source of this second kind of color is a green light, and the light source of this third color is a blue light.
6, a kind of display packing of coloured image comprises:
At the first time of picture frame in the time, the light source of first color continues luminous first period; And
At the second time of picture frame in the time, the light source that is different from second color of first color continues luminous second period;
Wherein, this picture frame time first time and this secondary picture frame time are not overlapping at that time, and the time span of the time span of this first period and this second period is inequality, and the color and luster effect that makes these a plurality of light sources of different colors can present overlapping addition by the persistence of vision of human eye effect reaches the white balance of expectation.
7, display packing as claimed in claim 6 also comprises the following steps:
In time, the light source that is different from the 3rd color of first color, second color continues luminous the 3rd period at picture frame for the third time;
Wherein, this for the third time picture frame time and this picture frame, for the second time the time of picture frame not overlapping at that time, and the time span of the 3rd period is inequality with the time span of this first period, second period respectively.
8, display packing as claimed in claim 6 also comprises the following steps:
In time, the light source that is different from the 3rd color of first color, second color continues luminous the 3rd period that reached at picture frame for the third time;
Wherein, this for the third time picture frame time and this picture frame, for the second time the time of picture frame not overlapping at that time, and the time span of the time span of the 3rd period and this first period is identical.
9, display packing as claimed in claim 6, also comprise the following steps: in first input time of the picture frame time first time, first data that its corresponding liquid crystal of input decision rotates, wherein this first input time is early than this first period and do not overlap each other.
10, display packing as claimed in claim 9 also comprises the following steps: after this first input time, in the first liquid crystal rotation time before first period, and this corresponding liquid crystal rotates according to first data of input.
11, display packing as claimed in claim 6, wherein, the ending of the time of this first period and then should the picture frame time second time.
12, display packing as claimed in claim 10, wherein, the center time point of this first period is positioned at the end up mid point in the time interval that this picture frame time second time begins of this first liquid crystal rotation time.
13, a kind of method of controlling the light source of display panels comprises:
Adjust the work period of these light sources according to the tone of the light that a plurality of light source sent of this display panels.
14, method as claimed in claim 13 comprises that also the tone of the light that sends according to these light sources adjusts the intensity of these light sources.
15, method as claimed in claim 14 comprises that also these light sources emit beam according to the work period and the intensity of these light sources.
16, method as claimed in claim 13 comprises that also these light sources emitted beam according to the work period of these light sources.
17, method as claimed in claim 16, wherein these light sources emit beam according to work period of these light sources and emit beam according to the work period of these light sources in regular turn for these light sources.
18, method as claimed in claim 16, wherein these light sources emit beam according to work period of these light sources and comprise light source and emit beam according to work period of this light source in the corresponding image signal transmission back that finishes.
19, method as claimed in claim 18, wherein this light source emits beam according to work period of this light source in the corresponding image signal transmission back that finishes that the work period according to this light source emits beam immediately after corresponding image signal transmission finishes for this light source.
20, method as claimed in claim 16, wherein these light sources emit beam according to work period of these light sources and comprise light source and emit beam in the work period of corresponding liquid crystal rotation finishing back according to this light source.
21, method as claimed in claim 20, wherein this light source emits beam according to the work period of this light source in corresponding liquid crystal rotation finishing back, and the work period according to this light source emits beam immediately after corresponding liquid crystal rotation finishes for this light source.
22, method as claimed in claim 20, wherein this light source in corresponding liquid crystal rotation finishing back according to the work period of this light source emit beam for this light source corresponding liquid crystal rotation finish and after the period of (T2-T1-Tdc)/2 work period according to this light source emit beam; Wherein
The time that T1 finishes for the liquid crystal rotation with respect to this light source;
Tdc is the work period of this light source;
The time that T2 begins to transmit for the transmission signals with respect to next light source of this light source.
23, method as claimed in claim 20, wherein this light source in corresponding liquid crystal rotation finishing back according to the work period of this light source emit beam for this light source corresponding liquid crystal rotation finish and after the period of (T2-T1-Tdc) work period according to this light source emit beam; Wherein
The time that T1 finishes for the liquid crystal rotation with respect to this light source;
Tdc is the work period of this light source;
The time that T2 begins to transmit for the transmission signals with respect to next light source of this light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610074879XA CN100552765C (en) | 2006-04-25 | 2006-04-25 | The method of the display packing of LCD and coloured image and control light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610074879XA CN100552765C (en) | 2006-04-25 | 2006-04-25 | The method of the display packing of LCD and coloured image and control light source |
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| Publication Number | Publication Date |
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| CN1831926A true CN1831926A (en) | 2006-09-13 |
| CN100552765C CN100552765C (en) | 2009-10-21 |
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| CNB200610074879XA Expired - Fee Related CN100552765C (en) | 2006-04-25 | 2006-04-25 | The method of the display packing of LCD and coloured image and control light source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109574A (en) * | 2017-12-18 | 2018-06-01 | 武汉水草能源科技研发中心(有限合伙) | Color display, device and display screen, the traffic lights of time allotment |
| CN113035141A (en) * | 2021-03-19 | 2021-06-25 | 维沃移动通信有限公司 | Display screen, display screen driving method and device, electronic equipment and storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6096332B2 (en) | 2013-11-25 | 2017-03-15 | フィリップス ライティング ホールディング ビー ヴィ | Method for controlling lighting device, lighting controller and lighting system |
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2006
- 2006-04-25 CN CNB200610074879XA patent/CN100552765C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109574A (en) * | 2017-12-18 | 2018-06-01 | 武汉水草能源科技研发中心(有限合伙) | Color display, device and display screen, the traffic lights of time allotment |
| CN113035141A (en) * | 2021-03-19 | 2021-06-25 | 维沃移动通信有限公司 | Display screen, display screen driving method and device, electronic equipment and storage medium |
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| Publication number | Publication date |
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| CN100552765C (en) | 2009-10-21 |
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Granted publication date: 20091021 |