CN101510397A - Display method for reducing color separation of liquid crystal display - Google Patents
Display method for reducing color separation of liquid crystal display Download PDFInfo
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- CN101510397A CN101510397A CN 200810005923 CN200810005923A CN101510397A CN 101510397 A CN101510397 A CN 101510397A CN 200810005923 CN200810005923 CN 200810005923 CN 200810005923 A CN200810005923 A CN 200810005923A CN 101510397 A CN101510397 A CN 101510397A
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Abstract
The invention relates to a display method for reducing the color break-up (CBU) of a liquid crystal display. The method comprises the following steps of: generating control signals of each sprite comprising a plurality of second backlight control signals, a plurality of second liquid crystal control signals and third liquid crystal control signals; and sequentially displaying the sprites. The method generates the second backlight control signals and the second liquid crystal control signals of each display area in each sprite according to the brightness of the images to be displayed, sequentially displays multi-color sprites and a plurality of monochromatic light sprites according to the second backlight control signals and the second liquid crystal control signals, and forms the images to be displayed through the visual effect of human eyes. By the implementation of the method, not only the phenomenon of the CBU produced by the liquid crystal display can be reduced but also the liquid crystal display with high contrast, high color saturation, low power consumption and low manufacture cost can be obtained.
Description
Technical field
The present invention relates to a kind of display packing that look separates that reduces, particularly relate to a kind of LCD that is applied to, contribution can reduce the generation of look segregation phenomenon to picture displayed by reducing each coloured light sprite, and by the backlight signal size of adjusting different viewing areas in each sprite, and then can improve the LCD contrast, and can reduce the display packing of the reduction LCD look separation of consumed power.
Background technology
In recent years, along with the flat-panel screens industry develops gradually, display technique is also and then brought in constant renewal in progressive, and volume is little, in light weight and have the LCD of low electromagnetic (Liquid CrystalDisplay LCD) has become the main product of display.
Yet, because past application space colored filter (Spatial Color Filter, SCF) LCD of technology, (pixel is a picture element to each pixel in liquid crystal module, below all be called pixel) constituted by three sub-pixels, and each bar sub-pixel is respectively by a field-effect transistor (FieldEffect Transistor, TFT; Transistor is an electric crystal, below all is called transistor) control its electric field intensity.Because each pixel need be used three field-effect transistors at least, need to use colored filter again simultaneously, not only expend raw materials cost, also increased the complexity of making LCD, more significantly reduced optical efficiency.Therefore industry has been researched and developed appearance look preface (Field Sequential Color at present, FSC) display technique, utilization is switched trichromatic light source according to sequential, and the penetrance of collocation synchro control liquid crystal pixel, in order to allocate the relative light intensity of each color light source, again by the integral action of vision system photic stimuli, in order to form and to obtain the color that desire shows.
Field look preface display technique shows because need not use colored filter can reach colored, and each pixel need not be divided into sub-pixel again, also can reduce field-effect transistor required in the single pixel, and then can the conservation cost, more can simplify the manufacturing course formality.Under desirable imaging situation, the three primary colors that single chromatic image comprised should be projected to the position of each pixel correspondence on the retina of human eye, and make the color information of each pixel can be by the complete reproduction of vision, if but the three primary colors image colour field that chromatic image comprised, its corresponding pixel is projected to diverse location on retina, and then examined by vision system and to know, then the observer will see that colour field separates the picture of dislocation, this promptly is called the look segregation phenomenon.Because the look segregation phenomenon can significantly reduce display quality, so the look segregation phenomenon then is a major issue that look preface display technique must be improved.
Can utilize at present and insert sprite in order to solve the phenomenon that look separates, for example United States Patent (USP) is announced in No. 7057668 disclosed red light-emitting diode, green light LED and the blue light-emitting diode of utilizing as backlight, (signal is a signal when signal of video signal, below all be called signal) when importing, the signal of video signal of importing is converted to the YCrCb color system.When the look segregation phenomenon of displaying contents is slight, then use look preface display technique is come display frame, but if when the look segregation phenomenon of displaying contents is serious, then insert another sprite, utilize and open red light-emitting diode, green light LED and blue light-emitting diode simultaneously, make backlight changing into show complete bright white light, coloured striped that the assumed appearance segregation phenomenon produces mixes mutually with the sprite that is inserted, and then can reduce the look segregation phenomenon and be examined the chance of knowing by vision system.
Though above-mentioned method can solve the phenomenon that the part look separates, but when forward is watched the LCD of applied field look preface display technique, because liquid crystal takes place in the phenomenon that forward still has light leak, and then reduced the contrast of LCD, therefore how when effectively solving the look segregation phenomenon, also can improve the contrast of LCD, then become main R﹠D direction at present.
This shows that the display packing that above-mentioned existing LCD look separates obviously still has inconvenience and defective in structure and use, and demands urgently further being improved.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found the display packing that a kind of new reduction LCD look separates, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that the display packing that above-mentioned existing LCD look separates exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding the display packing that a kind of new reduction LCD look separates, can improve the display packing that general existing LCD look separates, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
The objective of the invention is to, overcome the defective of the display packing existence of existing LCD look separation, and the display packing that provides a kind of new reduction LCD look to separate, technical matters to be solved is to make it by in conjunction with high dynamic contrast display technique and look preface display technique, can reduce LCD and produce the phenomenon that look separates, and can be so that LCD simultaneously with height contrast, low power consumption, high color saturation, low manufacture cost and other advantages, is very suitable for practicality.
Another object of the present invention is to, the display packing that provides a kind of new reduction LCD look to separate, technical matters to be solved is to make it by the bright dark degree according to desire display frame, produce second backlight control signal and the second liquid crystal control signal of each viewing area in each sprite, show the colorful sprite of being formed by the dichroscope sprite according to second backlight control signal and the second liquid crystal control signal again, and show each coloured light sprite in regular turn, can reduce the phenomenon that the LCD look separates, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of display packing that reduces the separation of LCD look according to the present invention's proposition, it comprises the following steps: to produce a control signal of each sprite, this control signal comprises most, and (most promptly a plurality of, below all be called most) second backlight control signal, most second liquid crystal control signals and one the 3rd liquid crystal control signal, the method that produces this control signal again comprises the following steps: to analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel; Cutting apart this sprite is multiple display area; Produce this second backlight control signal of each this coloured light in each this viewing area, it is to produce by those first liquid crystal control signals; Produce in each this viewing area each this coloured light in this second liquid crystal control signal of each this pixel, it is to produce according to this second backlight control signal; And the 3rd liquid crystal control signal of each this viewing area of generation; And show those sprites in regular turn, and it comprises the following steps: to show a colorful sprite, it is simultaneously to cooperate the 3rd liquid crystal control signal to show according to this second backlight control signal of each this coloured light in each this viewing area; And show that in regular turn each coloured light sprite, each this coloured light sprite are that this second backlight control signal according to this coloured light in each this viewing area cooperates the operation result demonstration of this coloured light in this second liquid crystal control signal with the 3rd liquid crystal control signal of each this pixel.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The display packing that aforesaid reduction LCD look separates, wherein said those coloured light are for a red light, a green light, reach a blue light.
The display packing that aforesaid reduction LCD look separates, this second backlight control signal of each this coloured light is to be the maximal value in those first liquid crystal control signals in wherein said each this viewing area.
The display packing that aforesaid reduction LCD look separates, this second backlight control signal of each this coloured light is the mean value of those first liquid crystal control signals in wherein said each this viewing area.
The display packing that aforesaid reduction LCD look separates, this second backlight control signal of each this coloured light is to be the mean value of those the first liquid crystal control signals total exponent number value divided by those backlight control signals in wherein said each this viewing area, and it is opened time root, multiply by this total exponent number value again.
The display packing that aforesaid reduction LCD look separates, each this coloured light is to calculate according to following equation to produce in this second liquid crystal control signal of each this pixel in wherein said each this viewing area: GL
HDR=(BL
Full/ BL
HDR)
1/r* GL
FullWherein, GL
HDRBe this second liquid crystal control signal, BL
FullBe this first backlight control signal, BL
HDRBe this second backlight control signal, r is a gamma factor, and GL
FullBe this first liquid crystal control signal.
The display packing that aforesaid reduction LCD look separates, wherein said the 3rd liquid crystal control signal is to be the minimum value in those second liquid crystal control signals.
The display packing that aforesaid reduction LCD look separates, wherein said the 3rd liquid crystal control signal is for being less than or equal to the minimum value in those second liquid crystal control signals.
The display packing that aforesaid reduction LCD look separates, wherein said operation result is the difference for this second liquid crystal control signal and the 3rd liquid crystal control signal.
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of display packing that reduces the separation of LCD look according to the present invention's proposition, it comprises the following steps: to produce a control signal of each sprite, this control signal comprises most second backlight control signals, most individual second liquid crystal control signal and one the 3rd liquid crystal control signal, the method that produces this control signal again comprises the following steps: to analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel; Cutting apart this sprite is multiple display area; Produce this second backlight control signal of each this coloured light in each this viewing area, it is to produce by those first liquid crystal control signals; Produce in each this viewing area each this coloured light in this second liquid crystal control signal of each this pixel, it is to produce according to this second backlight control signal; And the 3rd liquid crystal control signal of each this viewing area of generation; And show those sprites in regular turn, it comprises the following steps: to show a colorful sprite, it is by selecting one first coloured light and one second coloured light in those coloured light, cooperating the 3rd liquid crystal control signal to show by this second backlight control signal of this first coloured light and this second backlight control signal of this second coloured light again; Show one first coloured light sprite, it is that this second backlight control signal according to this first coloured light cooperates this first coloured light to show in this second a liquid crystal control signal of each this pixel and an operation result of the 3rd liquid crystal control signal; Show one second coloured light sprite, it is that this second backlight control signal according to this second coloured light cooperates this second coloured light to show in this second liquid crystal control signal of each this pixel and this operation result of the 3rd liquid crystal control signal; And showing one the 3rd coloured light sprite, it is that this second backlight control signal according to one the 3rd coloured light cooperates the 3rd coloured light to show in this second liquid crystal control signal of each this pixel.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The display packing that aforesaid reduction LCD look separates, wherein said those coloured light are for a red light, a green light, reach a blue light.
The display packing that aforesaid reduction LCD look separates, this second backlight control signal of each this coloured light is to be the maximal value in those first liquid crystal control signals in wherein said each this viewing area.
The display packing that aforesaid reduction LCD look separates, this second backlight control signal of each this coloured light is the mean value of those first liquid crystal control signals in wherein said each this viewing area.
The display packing that aforesaid reduction LCD look separates, this second backlight control signal of each this coloured light is to be the mean value of those the first liquid crystal control signals total exponent number value divided by those backlight control signals in wherein said each this viewing area, and it is opened time root, multiply by this total exponent number value again.
The display packing that aforesaid reduction LCD look separates, each this coloured light is to calculate according to following equation to produce in this second liquid crystal control signal of each this pixel in wherein said each this viewing area: GL
HDR=(BL
Full/ BL
HDR)
1/r* GL
FullWherein, GL
HDRBe this second liquid crystal control signal, BL
FullBe this first backlight control signal, BL
HDRBe this second backlight control signal, r is a gamma factor, and GL
FullBe this first liquid crystal control signal.
The display packing that aforesaid reduction LCD look separates, wherein said the 3rd liquid crystal control signal is to be the minimum value in those second liquid crystal control signals of this first coloured light and this second coloured light.
The display packing that aforesaid reduction LCD look separates, wherein said the 3rd liquid crystal control signal are the minimum value that is less than or equal in those second liquid crystal control signals of this first coloured light and this second coloured light.
The display packing that aforesaid reduction LCD look separates, wherein said operation result is the difference for this second liquid crystal control signal and the 3rd liquid crystal control signal.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows:
In order to achieve the above object, the invention provides a kind of display packing that the LCD look separates that reduces, it comprises the following steps: to produce a control signal of each sprite, control signal comprises most second backlight control signals and most the second liquid crystal control signals, the method that produces control signal again comprises the following steps: to analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel; Cutting apart sprite is multiple display area; Produce second backlight control signal of each coloured light in each viewing area, it is to produce by a little first liquid crystal control signals; Produce that each coloured light is in the second liquid crystal control signal of each pixel in each viewing area, it is to produce according to second backlight control signal; And one the 3rd liquid crystal control signal that produces each viewing area; And show a little picture in regular turn, and it comprises the following steps: to show a colorful sprite, it is simultaneously to cooperate the 3rd liquid crystal control signal to show according to second backlight control signal of each coloured light in each viewing area; And show that in regular turn each coloured light sprite, each coloured light sprite are to cooperate the operation result demonstration of coloured light in the second liquid crystal control signal with the 3rd liquid crystal control signal of each pixel according to second backlight control signal of coloured light in each viewing area.
In addition, in order to achieve the above object, the present invention provides a kind of display packing that the LCD look separates that reduces again, it comprises the following steps: to produce a control signal of each sprite, control signal comprises most second backlight control signals and most the second liquid crystal control signals, the method that produces control signal again comprises the following steps: to analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel; Cutting apart sprite is multiple display area; Produce second backlight control signal of each coloured light in each viewing area, it is to produce by a little first liquid crystal control signals; Produce that each coloured light is in the second liquid crystal control signal of each pixel in each viewing area, it is to produce according to second backlight control signal; And one the 3rd liquid crystal control signal that produces each viewing area; And show a little picture in regular turn, it comprises the following steps: to show a colorful sprite, it is by selecting one first coloured light and one second coloured light in a little coloured light, cooperating the 3rd liquid crystal control signal to show by second backlight control signal of first coloured light and second backlight control signal of second coloured light again; Show one first coloured light sprite, it is that second backlight control signal according to first coloured light cooperates first coloured light to show in second a liquid crystal control signal of each pixel and an operation result of the 3rd liquid crystal control signal; Show one second coloured light sprite, it is that second backlight control signal according to second coloured light cooperates second coloured light to show in the second liquid crystal control signal of each pixel and the operation result of the 3rd liquid crystal control signal; And showing one the 3rd coloured light sprite, it is that second backlight control signal according to one the 3rd coloured light cooperates the 3rd coloured light to show in the second liquid crystal control signal of each pixel.
By technique scheme, the display packing that the present invention reduces the separation of LCD look has following advantage and beneficial effect at least:
1, the present invention can reduce the generation of look segregation phenomenon by reducing the contribution of each coloured light sprite to picture displayed.
2, the present invention is by the backlight signal size of adjusting different viewing areas in each sprite, and then can improve the contrast of LCD, and can reduce consumed power.
3, the present invention is by in conjunction with high dynamic contrast display technique and look preface display technique, according to the bright dark degree of desiring display frame, produce second backlight control signal and the second liquid crystal control signal of each viewing area in each sprite, show the colorful sprite of being formed by each coloured light sprite according to second backlight control signal and the second liquid crystal control signal again, and show each coloured light sprite in regular turn, and then can reduce the phenomenon that LCD produces the look separation, and can be so that LCD contrasts with height simultaneously, low power consumption, high color saturation, low manufacture cost and other advantages is very suitable for practicality.
4, the present invention is by the bright dark degree according to desire display frame, produce second backlight control signal and the second liquid crystal control signal of each viewing area in each sprite, show the colorful sprite of being formed by the dichroscope sprite according to second backlight control signal and the second liquid crystal control signal again, and show each coloured light sprite in regular turn, can reduce the phenomenon that the LCD look separates, thereby be suitable for practicality more.
In sum, the present invention is relevant a kind of display packing that the LCD look separates that reduces, and it comprises the following steps: to produce the control signal of each sprite; And show sprite in regular turn.The present invention is according to the bright dark degree of desiring picture displayed, produce second backlight control signal and the second liquid crystal control signal of each viewing area in each sprite, show colorful sprite and a plurality of monochromatic light sprite in regular turn according to second backlight control signal and the second liquid crystal control signal again, and form the desire picture displayed via the visual process of human eye.By enforcement of the present invention, (Color Break Up, phenomenon CBU) can be reached with the LCD of height contrast, high color saturation, low power consumption and low manufacturing cost again not only can to reduce the separation of LCD generation look.The present invention has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on display packing or function, marked improvement is arranged technically, and produced handy and practical effect, and the display packing that more existing LCD look separates has the outstanding effect of enhancement, thereby being suitable for practicality more, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is a kind of process flow diagram that the LCD look separates the display packing preferred embodiment that reduces of the present invention.
Fig. 2 is the process flow diagram of the embodiment of a kind of control signal that produces each sprite of the present invention.
Fig. 3 is the synoptic diagram of the embodiment of the chromatic image that shows of desire.
Fig. 4 A is a kind of process flow diagram one that shows the embodiment of each sprite of the present invention.
Fig. 4 B is a kind of sequential chart one that shows the embodiment of each sprite of the present invention.
Fig. 5 A is a kind of flowchart 2 that shows each sprite of the present invention.
Fig. 5 B is a kind of sequential chart two that shows each sprite of the present invention.
Fig. 6 A is the process flow diagram that a certain viewing area produces control signal among Fig. 3.
Fig. 6 B is the process flow diagram that shows sprite according to the control signal that Fig. 6 A produces in regular turn.
S100: reduce the display packing that the LCD look separates
S110: the control signal that produces each sprite
S111: analyze the input signal of video signal
S112: cutting apart sprite is multiple display area
S113: second backlight control signal that produces each coloured light in each viewing area
S114: the second liquid crystal control signal that produces each coloured light in each viewing area
S115: the 3rd liquid crystal control signal that produces each viewing area
S120, S120 ': show sprite in regular turn
S121, S121 ': show colorful sprite
S122: show each coloured light sprite in regular turn
S123: show the first coloured light sprite
S124: show the second coloured light sprite
S125: show the 3rd coloured light sprite
12: the first liquid crystal control signals
11: the first backlight control signals
21: the second backlight control signals
22: the second liquid crystal control signals
23: the three liquid crystal control signals
24: operation result
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of display packing, feature and effect thereof that the reduction LCD look that foundation the present invention is proposed separates, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
Seeing also shown in Figure 1ly, is a kind of process flow diagram that the LCD look separates display packing S100 preferred embodiment that reduces of the present invention.A kind of display packing S100 that reduces the separation of LCD look of preferred embodiment of the present invention comprises the following steps: to produce the control signal S110 of each sprite, and shows sprite S120 in regular turn.
The control signal of each sprite, comprise most second backlight control signals, most individual second liquid crystal control signal and one the 3rd liquid crystal control signal, second backlight control signal is in order to control the backlight illumination of module backlight, the second liquid crystal control signal is then in order to control the penetrance of liquid crystal, the second liquid crystal control signal is big more represents that promptly the penetrance of liquid crystal is high more, that is to say the brighter display of picture, in the present embodiment, respectively with the size of backlight illumination GTG value and liquid crystal GTG value representation second backlight control signal and the second liquid crystal control signal.
Seeing also shown in Figure 2ly, is the process flow diagram of the embodiment of a kind of control signal S110 that produces each sprite of the present invention.The method of the control signal S110 of above-mentioned each sprite of generation comprises the following steps: to analyze input signal of video signal S111; Cutting apart sprite is a plurality of (a plurality of) viewing area S112; Produce the second backlight control signal S113 of each coloured light in each viewing area; Produce in each viewing area each coloured light at the second liquid crystal control signal S114 of each pixel; And the 3rd liquid crystal control signal S115 that produces each viewing area.
This analyzes input signal of video signal S111, sees also shown in Figure 3ly, is the synoptic diagram of the embodiment of the chromatic image that shows of desire, if the chromatic image that Fig. 3 shows for desire, importing signal of video signal is to include information such as first backlight control signal and the first liquid crystal control signal.For instance, if backlight illumination for bright entirely, that is to say that first backlight control signal is the maximal value of backlight illumination GTG value, for instance, if use the control signal of 8 bits, first backlight control signal is to be 255.
And under complete bright situation backlight, LCD need be controlled the penetrance of liquid crystal in each pixel by the first liquid crystal control signal respectively, and then make the color that shows that the branch of light and shade be arranged, therefore can import signal of video signal by analyzing, and obtain the first liquid crystal control signal and first backlight control signal of each coloured light in each pixel respectively.
This cuts apart sprite is multiple display area S112, because it is brighter that chromatic image has the picture of part, and the picture of part is darker, so sprite can be divided into multiple display area, according to the bright dark degree of each viewing area, control the backlight illumination of each viewing area respectively.For instance, as shown in Figure 3, sprite may be partitioned into 4 viewing areas of 4 x.
This produces the second backlight control signal S113 of each coloured light in each viewing area, in each viewing area, respectively by producing a numerical value in the first liquid crystal control signal of each coloured light as second backlight control signal, the user can select according to its demand, for example can select the maximal value, mean value of the first liquid crystal control signal or with the mean value of the first liquid crystal control signal earlier divided by total exponent number value of control signal, and it is opened time root, make its normalization, multiply by total exponent number value again as second backlight control signal.
For instance, as second backlight control signal, for example the maximal value of the first liquid crystal control signal is 95 in the viewing area as if the maximal value of choosing the first liquid crystal control signal in the viewing area, and then second backlight control signal also is 95.Also just represent pixel the brightest in the viewing area because have the peaked pixel of the first liquid crystal control signal, therefore, also just can reduce the power that module backlight consumes if brightness backlight directly can be adjusted into brightness the brightest in the viewing area.
That is to say, by adjusting the backlight of each viewing area, directly use more weak backlight in darker viewing area originally, or even close the backlight of this viewing area, use brighter backlightly in brighter viewing area, and change the penetrance of liquid crystal again by the second liquid crystal control signal, can reach the chromatic image that desire shows, and can reach low consumpting power by this, and improve the target of picture contrast.
This produces in each viewing area each coloured light at the second liquid crystal control signal S114 of each pixel, because the last chromatic image that shows needs and equates according to the input chromatic image light intensity that signal of video signal produced, therefore can produce the second liquid crystal control signal according to the second known backlight control signal, the second liquid crystal control signal can be calculated according to following equation and produce:
GL
HDR＝GL
Full×(BL
Full/BL
HDR)
1/r---(1)
GL wherein
HDRBe the second liquid crystal control signal, BL
FullBe first backlight control signal, BL
HDRBe second backlight control signal, r is a gamma factor, and GL
FullIt is the first liquid crystal control signal.
In addition, because the back light of each viewing area may influence each other, therefore also can be with the BL in (1) formula
FullChange the light intensity value of first backlight control signal into, BL
HDRChange the light intensity value of second backlight control signal into, can obtain more accurate by this and the second suitable liquid crystal control signal.
This produces one the 3rd liquid crystal control signal S115 of each viewing area, the 3rd liquid crystal control signal is by producing in all second liquid crystal control signal of each coloured light, and the 3rd liquid crystal control signal can be less than or equal to the minimum value in second all in each coloured light liquid crystal control signals.
Seeing also shown in Fig. 4 A, is a kind of process flow diagram one that shows the embodiment of each sprite S120 of the present invention.Shown in Fig. 4 A, show sprite S120 in regular turn, comprise the following steps: to show colorful sprite S121, and show each coloured light sprite S122 in regular turn.
This shows colorful sprite S121, sees also shown in Fig. 4 B, is a kind of sequential chart one that shows the embodiment of each sprite S120 of the present invention.Shown in Fig. 4 B, colorful sprite is to form by showing each coloured light sprite simultaneously, and it is simultaneously to cooperate the 3rd liquid crystal control signal to show according to second backlight control signal of each coloured light in each viewing area.This colorful sprite is to be the picture of being made up of red light, green light and three kinds of coloured light of blue light, the backlight illumination of each coloured light is then controlled respectively by second backlight control signal of each coloured light, and the penetrance of the 3rd liquid crystal control signal control liquid crystal of arranging in pairs or groups.
This shows each coloured light sprite S122 in regular turn, each coloured light sprite is according in each viewing area, second backlight control signal of this coloured light cooperates second a liquid crystal control signal of each pixel and an operation result of the 3rd liquid crystal control signal to show, wherein operation result can be the difference of the second liquid crystal control signal and the 3rd liquid crystal control signal, but the method that produces operation result is not limited thereto, and the user can desire the adjustment of picture displayed quality according to it.
Shown in Fig. 4 B, each chromatic image is by in a time period T, finish the demonstration of colorful sprite and each coloured light sprite, can form a complete chromatic image by the visual process of human eye, each chromatic image is by in a time period T, show colorful sprite and each coloured light sprite, can form a complete chromatic image by the visual process of human eye, and the demonstration of colorful sprite is for example shown in Fig. 4 B, show the red light sprite simultaneously, green light sprite and blue photons picture and form, and the collocation of second backlight control signal of each coloured light sprite and the second liquid crystal control signal is as previously discussed.
In addition, the colorful sprite of present embodiment can also be wherein two primary colors that only show simultaneously in the three primary colors, sees also shown in Fig. 5 A, is the flowchart 2 of a kind of each sprite S120 ' of demonstration of the present invention.Another of present embodiment shows the method for sprite S120 ' in regular turn, comprises following step: show colorful sprite S121 ', show the first coloured light sprite S123, show the second coloured light sprite S124, and show the 3rd coloured light sprite S125; Wherein:
This shows colorful sprite S121 ', sees also shown in Fig. 5 B, is the sequential chart two of a kind of each sprite S120 ' of demonstration of the present invention.Can be by selecting one first coloured light and one second coloured light in three kinds of different color lights, cooperate the 3rd liquid crystal control signal to show colorful sprite by second backlight control signal of first coloured light and second backlight control signal of second coloured light again, the group that the optional free red light of first coloured light and second coloured light, green light and blue light are formed, and the 3rd liquid crystal control signal can be less than or equal to the minimum value in the second liquid crystal control signal of first coloured light and second coloured light.For instance, if first coloured light is that red light, second coloured light are green light, so colorful sprite is actually yellow (yellow) photon picture, it is that second backlight control signal according to second backlight control signal of red light and green light cooperates the 3rd liquid crystal control signal to show.
This shows the first coloured light sprite S123, be that second backlight control signal according to first coloured light cooperates first coloured light to show in the second liquid crystal control signal of each pixel and the operation result of the 3rd liquid crystal control signal, wherein operation result can be the difference of the second liquid crystal control signal and the 3rd liquid crystal control signal, but the method for same generation operation result also is not limited thereto, and the user can desire the adjustment of picture displayed quality according to it.Because colorful sprite display part first coloured light, thus the second liquid crystal control signal need with the 3rd liquid crystal control signal computing after, the operation result with second backlight control signal collocation liquid crystal control signal shows the first coloured light sprite again.
This shows the second coloured light sprite S124, be that second backlight control signal according to second coloured light cooperates second coloured light to show that in the second liquid crystal control signal of each pixel and the operation result of the 3rd liquid crystal control signal wherein operation result can be the difference of the second liquid crystal control signal and the 3rd liquid crystal control signal.Same because colorful sprite display part second coloured light, so the second liquid crystal control signal need with the 3rd liquid crystal control signal computing after, the operation result with second backlight control signal collocation liquid crystal control signal shows the second coloured light sprite again.
This shows the 3rd coloured light sprite S125, is that second backlight control signal according to the 3rd coloured light cooperates the 3rd coloured light to show in the second liquid crystal control signal of each pixel.Therefore because colorful sprite does not show the 3rd coloured light, the second liquid crystal control signal need not and the 3rd liquid crystal control signal computing again, can be directly and the demonstration that cooperatively interacts of second backlight control signal of the 3rd coloured light.
See also shown in Fig. 5 B, this colorful sprite can be by showing red light and green light the yellow that becomes (yellow) photon picture, perhaps can become cyan (cyan) photon picture (figure does not show) by showing green light and blue light, or show red light and green light and behind the carmetta that becomes (magenta) the photon picture (figure does not show), show first, second, third coloured light sprite more in regular turn, and the order that the coloured light sprite shows does not limit.
Because colorful sprite has shown partial color, therefore can be again by showing that in regular turn each coloured light sprite supplies the color that lacks in the colorful sprite, and because inserted a colorful sprite more, so the time that each coloured light sprite shows also can shorten relatively, and can reduce of the contribution of each coloured light of script, and then can reduce the generation of look segregation phenomenon to image.
For content that can clearer understanding present embodiment, below giving an example specifies the method flow of present embodiment.Seeing also shown in Fig. 6 A, is the process flow diagram that a certain viewing area produces control signal among Fig. 3, and it produces the flow process S120 of second backlight control signal 21, the second liquid crystal control signal 22 and the 3rd liquid crystal control signal 23 for a certain viewing area in the key diagram 4.
See also shown in Fig. 6 A,, can obtain first backlight control signal 11 of each coloured light and the first liquid crystal control signal 12 in each pixel by analyzing input signal of video signal S111.By learning among Fig. 6 A, first backlight control signal 11 of red light is to be 255, the first liquid crystal control signal 12 be for 250,248,246, first backlight control signal 11 of 264...... etc., green light is that 255, the first liquid crystal control signal 12 is 196,195,194,194...... etc., and first backlight control signal 11 of blue light is 255, the first liquid crystal control signal 12 is 92,93,93,95...... etc.
This produces the second backlight control signal S113 according to the first liquid crystal control signal of each coloured light respectively, for example with second backlight control signal 21 of the maximal value in the first liquid crystal control signal 12 as each coloured light, therefore in this viewing area, second backlight control signal 21 of red light be for 250, second backlight control signal 21 of green light is that second backlight control signal 21 of 196 blue lights is 95.
Next, produce the second liquid crystal control signal S114 of each coloured light.Because the last chromatic image that shows needs and equates according to the input chromatic image light intensity that signal of video signal produced, and therefore can produce the second liquid crystal control signal 22 of each pixel according to (1) formula.If the gamma factor in (1) formula is 2, after through calculating, the second liquid crystal control signal 22 of red light is 252,250,248, the second liquid crystal control signal 22 of 248...... etc., green light is 244,222,221,221...... etc., and the second liquid crystal control signal 22 of blue light is 151,152,152,156...... etc.
At last, produce the 3rd liquid crystal control signal S115.Suppose the minimum value of the second liquid crystal control signal 22 of red light, green light and blue light is set at the 3rd liquid crystal control signal 23, so the 3rd liquid crystal control signal 23 is to be 113, but the user also can choose numerical value less than the minimum value of the second liquid crystal control signal 22 as the 3rd liquid crystal control signal 23 according to the demand of desiring display frame.
Seeing also shown in Fig. 6 B, is the process flow diagram that shows sprite according to the control signal that Fig. 6 A produces in regular turn.Shown in Fig. 6 B, be that the control signal according to each coloured light shows sprite S120 in regular turn.Respectively according to second backlight control signal 21 of red light, green light and blue light, the 3rd liquid crystal control signal 23 of arranging in pairs or groups simultaneously shows colorful sprite S121, because the 3rd liquid crystal control signal 23 be the minimum value in the second liquid crystal control signal 22 of red light, green light and blue light, so colorful sprite has shown the partial color of the chromatic image of desire demonstration.
Then, show each coloured light sprite S122 in regular turn, show red light sprite, green light sprite and blue photons picture in regular turn, but and the order of indefinite coloured light sprite demonstration.As the order that shows with Fig. 6 B, the first coloured light sprite is that red light sprite, the second coloured light sprite are that green light sprite and the 3rd coloured light sprite are the blue photons picture.
For instance, second backlight control signal 21 of red light sprite is 250, and the operation result 24 of the arrange in pairs or groups second liquid crystal control signal 22 and the 3rd liquid crystal control signal 23, for example 139,137,135,135...... etc. shows the red light sprite; Same, second backlight control signal 21 of green light sprite is 196, the second backlight control sequence number of blue photons picture is 95, and it is that arrange in pairs or groups the respectively operation result 24 of the second liquid crystal control signal 22 and the 3rd liquid crystal control signal 23 shows green light sprite and blue photons pictures.The present invention can effectively reduce the generation of look segregation phenomenon by said method display color image.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (18)
1, a kind of display packing that reduces the separation of LCD look is characterized in that it comprises the following steps:
Produce a control signal of each sprite, this control signal comprises most second backlight control signals, most individual second liquid crystal control signal and one the 3rd liquid crystal control signal, and the method that produces this control signal again comprises the following steps:
Analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel;
Cutting apart this sprite is multiple display area;
Produce this second backlight control signal of each this coloured light in each this viewing area, it is to produce by those first liquid crystal control signals;
Produce in each this viewing area each this coloured light in this second liquid crystal control signal of each this pixel, it is to produce according to this second backlight control signal; And
Produce the 3rd liquid crystal control signal of each this viewing area; And
Show those sprites in regular turn, it comprises the following steps:
Show a colorful sprite, it is simultaneously to cooperate the 3rd liquid crystal control signal to show according to this second backlight control signal of each this coloured light in each this viewing area; And
Show each coloured light sprite in regular turn, each this coloured light sprite is that this second backlight control signal according to this coloured light in each this viewing area cooperates this coloured light to show in this second a liquid crystal control signal of each this pixel and an operation result of the 3rd liquid crystal control signal.
2, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said those coloured light are for a red light, a green light, reach a blue light.
3, the display packing of reduction LCD look separation according to claim 1, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the maximal value in those first liquid crystal control signals.
4, the display packing of reduction LCD look separation according to claim 1, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is the mean value for those first liquid crystal control signals.
5, the display packing of reduction LCD look separation according to claim 1, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the mean value of those the first liquid crystal control signals total exponent number value divided by those backlight control signals, and it is opened time root, multiply by this total exponent number value again.
6, the display packing of reduction LCD look separation according to claim 1 is characterized in that each this coloured light is to calculate according to following equation to produce in this second liquid crystal control signal of each this pixel in wherein said each this viewing area:
GL
HDR＝(BL
Full/BL
HDR)
1/r*GL
Full
Wherein, GL
HDRBe this second liquid crystal control signal, BL
FullBe this first backlight control signal, BL
HDRBe this second backlight control signal, r is a gamma factor, and GL
FullBe this first liquid crystal control signal.
7, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said the 3rd liquid crystal control signal is to be the minimum value in those second liquid crystal control signals.
8, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said the 3rd liquid crystal control signal is for being less than or equal to the minimum value in those second liquid crystal control signals.
9, the display packing of reduction LCD look separation according to claim 1 is characterized in that wherein said operation result is the difference for this second liquid crystal control signal and the 3rd liquid crystal control signal.
10, a kind of display packing that reduces the separation of LCD look is characterized in that it comprises the following steps:
Produce a control signal of each sprite, this control signal comprises most second backlight control signals, most individual second liquid crystal control signal and one the 3rd liquid crystal control signal, and the method that produces this control signal again comprises the following steps:
Analyze an input signal of video signal, in order to obtain one first liquid crystal control signal and one first backlight control signal of each coloured light in each pixel;
Cutting apart this sprite is multiple display area;
Produce this second backlight control signal of each this coloured light in each this viewing area, it is to produce by those first liquid crystal control signals;
Produce in each this viewing area each this coloured light in this second liquid crystal control signal of each this pixel, it is to produce according to this second backlight control signal; And
Produce the 3rd liquid crystal control signal of each this viewing area; And
Show those sprites in regular turn, it comprises the following steps:
Show a colorful sprite, it cooperates the 3rd liquid crystal control signal to show by this second backlight control signal of this first coloured light and this second backlight control signal of this second coloured light by selecting one first coloured light and one second coloured light in those coloured light again;
Show one first coloured light sprite, it is that this second backlight control signal according to this first coloured light cooperates this first coloured light to show in this second a liquid crystal control signal of each this pixel and an operation result of the 3rd liquid crystal control signal;
Show one second coloured light sprite, it is that this second backlight control signal according to this second coloured light cooperates this second coloured light to show in this second liquid crystal control signal of each this pixel and this operation result of the 3rd liquid crystal control signal; And
Show one the 3rd coloured light sprite, it is that this second backlight control signal according to one the 3rd coloured light cooperates the 3rd coloured light to show in this second liquid crystal control signal of each this pixel.
11, the display packing of reduction LCD look separation according to claim 10 is characterized in that wherein said those coloured light are for a red light, a green light, reach a blue light.
12, the display packing of reduction LCD look separation according to claim 10, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the maximal value in those first liquid crystal control signals.
13, the display packing of reduction LCD look separation according to claim 10, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is the mean value for those first liquid crystal control signals.
14, the display packing of reduction LCD look separation according to claim 10, this second backlight control signal that it is characterized in that each this coloured light in wherein said each this viewing area is to be the mean value of those the first liquid crystal control signals total exponent number value divided by those backlight control signals, and it is opened time root, multiply by this total exponent number value again.
15, the display packing of reduction LCD look separation according to claim 10 is characterized in that each this coloured light is to calculate according to following equation to produce in this second liquid crystal control signal of each this pixel in wherein said each this viewing area:
GL
HDR＝(BL
Full/BL
HDR)
1/r*GL
Full
Wherein, GL
HDRBe this second liquid crystal control signal, BL
FullBe this first backlight control signal, BL
HDRBe this second backlight control signal, r is a gamma factor, and GL
FullBe this first liquid crystal control signal.
16, the display packing of reduction LCD look separation according to claim 10 is characterized in that wherein said the 3rd liquid crystal control signal is to be the minimum value in those second liquid crystal control signals of this first coloured light and this second coloured light.
17, the reduction LCD look according to claim 10 display packing of separating is characterized in that wherein said the 3rd liquid crystal control signal is the minimum value that is less than or equal in those second liquid crystal control signals of this first coloured light and this second coloured light.
18, the display packing of reduction LCD look separation according to claim 10 is characterized in that wherein said operation result is the difference for this second liquid crystal control signal and the 3rd liquid crystal control signal.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866629A (en) * | 2010-03-05 | 2010-10-20 | 华映视讯（吴江）有限公司 | The color adjustment method of color sequence liquid crystal display |
| CN102024433A (en) * | 2009-09-22 | 2011-04-20 | 华映视讯（吴江）有限公司 | Display light source luminescence method |
| CN105575339A (en) * | 2015-11-30 | 2016-05-11 | 友达光电股份有限公司 | Display method and display device |
| TWI575497B (en) * | 2016-02-19 | 2017-03-21 | 友達光電股份有限公司 | Display method and display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6690422B1 (en) * | 1999-11-03 | 2004-02-10 | Sharp Laboratories Of America, Inc. | Method and system for field sequential color image capture using color filter array |
| KR100782814B1 (en) * | 2005-07-27 | 2007-12-06 | 삼성전자주식회사 | Field sequential image display apparatus and image displaying method thereof |
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2008
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024433A (en) * | 2009-09-22 | 2011-04-20 | 华映视讯（吴江）有限公司 | Display light source luminescence method |
| CN101866629A (en) * | 2010-03-05 | 2010-10-20 | 华映视讯（吴江）有限公司 | The color adjustment method of color sequence liquid crystal display |
| CN105575339A (en) * | 2015-11-30 | 2016-05-11 | 友达光电股份有限公司 | Display method and display device |
| US9934732B2 (en) | 2015-11-30 | 2018-04-03 | Au Optronics Corporation | Display method and display device |
| CN105575339B (en) * | 2015-11-30 | 2018-05-15 | 友达光电股份有限公司 | Display method and display device |
| TWI575497B (en) * | 2016-02-19 | 2017-03-21 | 友達光電股份有限公司 | Display method and display device |
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