CN101452671B - Display and drive method thereof - Google Patents
Display and drive method thereof Download PDFInfo
- Publication number
- CN101452671B CN101452671B CN2007101928756A CN200710192875A CN101452671B CN 101452671 B CN101452671 B CN 101452671B CN 2007101928756 A CN2007101928756 A CN 2007101928756A CN 200710192875 A CN200710192875 A CN 200710192875A CN 101452671 B CN101452671 B CN 101452671B
- Authority
- CN
- China
- Prior art keywords
- luminance weights
- pixel
- pixels
- display
- sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a display, which comprises a display panel and a drive circuit. The display panel is provided with pixels comprising red sub-pixels, green sub-pixels, blue sub-pixels and white sub-pixels; and the drive circuit receives a display signal, provides at least one first luminance weighing and second luminance weighing corresponding to the display signal and the red sub-pixels, the green sub-pixels, the blue sub-pixels and the white sub-pixels respectively, wherein the display selects one of the first luminance weighing and the second luminance weighing to drive the pixels according to different operation modes.
Description
Technical field
The present invention relates to a kind of display and driving method thereof, relate in particular to a kind of Liquid Crystal Display And Method For Driving of brightness-adjusting pattern.
Background technology
Display, LCD for example, produce color of pixel by redness, green and blue subpixels, for example, when the luminance weights of the redness (Red) in the pixel, green (Green) and blue (Blue) sub-pixel is identical, this pixel will show the GTG of black and white, and by changing the luminance weights of redness, green and blue subpixels, just can demonstrate different pixel color.Generally speaking, the producing method of the color of sub-pixel (red, green and blue) roughly is divided into several again, and for example: a kind of be backlight by display, produces the light source of single look and through colored filter and quality; Another kind ofly again just can send the light source of red, green and blue three looks, and not need again, as the light emitting diode (LED) that utilizes the red, green and blue look is as backlight through the colored filter quality for backlight itself.When LCD is utilized colored filter with generation red, green and blue three looks,, influenced penetrance and the power consumption of backlight by panel because the transmittance of colored filter is very low.In order to increase the penetrance of backlight, it is to increase white (White) sub-pixel at colored filter that a kind of way is arranged, and the transmittance of colored filter will improve manyly thus, and the penetrance of backlight is also along with improve, and then reduction LCD De Mao electric weight.
Generally speaking, no matter the sub-pixel of display has three kinds of colors (R, G and B) or four kinds of colors (R, G, B and W), and its sub-pixel can have several different arrangement modes.Fig. 1 shows a kind of arrangement of subpixels mode of display pannel, the serve as reasons sub-pixel of redness (R), green (G) and blue (B) three kinds of colors of display panel A1 is formed, and wherein each pixel P1 is by red, green and three sub-pixels of blueness are regularly arranged and define.Pixel P1 is shown as white pixel is example, and the luminance weights that each sub-pixel uses will be for identical, and promptly its luminance weights ratio is 1: 1: 1, and for example each sub-pixel is all 100% complete bright state.Fig. 2 shows the arrangement of subpixels mode of another kind of display panel, display panel A2 is rearranged by red, green, blue and white (W) sub-pixel, and wherein each pixel P2 is regularly arranged and constitute by red, green, blue and white four sub-pixels.Pixel P2 is shown as white pixel is example, and the luminance weights that each sub-pixel uses will be for identical, and promptly its luminance weights ratio is 1: 1: 1: 1, and for example each sub-pixel is all 1 00% complete bright state.Be different from each sub-pixel of RGBW regularly arranged of Fig. 2, Fig. 3 and Fig. 4 are the arrangement modes of the another kind of RGBW sub-pixel that proposes of prior art.The sub-pixel of Fig. 3 and Fig. 4 is arranged with interlace mode, and the sub-pixel in each pixel drives with a special luminance weights ratio, and arrangement of subpixels mode as shown in Figure 3 and Figure 4 and its Driving technique promptly are so-called pixel rendering technology (pixelrendering technology).With reference to figure 3, used 10 sub-pixels to define a pixel P3 among the display panel A3.Similarly, pixel P3 is shown as white pixel is example, this moment is if the redness in the middle of the pixel and the display brightness of green sub-pixels (R and G) respectively are set at 100%, four groups of bluenesss and white sub-pixels other display brightness around then will be respectively 25%, that is ratio red among the pixel P3, green, blue and the luminance weights that each sub-pixel of white uses will be 1: 1: 0.25: 0.25.Comparison diagram 2 can find that with Fig. 3 the area of each sub-pixel of display panel A3 will be greater than the sub-pixel area of display panel A2, and for example the area of pixel P2 will only correspond to two sub-pixel area sums (shown in Fig. 3 dotted line) of display panel.Though the area of each sub-pixel of display panel A3 becomes the penetrance that can promote backlight greatly, relatively its resolution will descend; Yet because each sub-pixel of pixel P3 is not only the sub-pixel that belongs to pixel P3 among the display panel A3, its also be around the sub-pixel of other pixel, therefore as the arrangement of subpixels mode of display panel A3 and the weight brightness of arrange in pairs or groups special red, green, blue and white sub-pixels it is driven, except the transmittance that can improve backlight, also improved exploration on display resolution ratio simultaneously.Continuation has used 9 sub-pixels to define a pixel P4 with reference to figure 4 among the display panel A4.Similarly, be example so that pixel P4 is shown as white pixel, the ratio of the luminance weights that each sub-pixel of RGBW uses among the pixel P4 will be 0.5: 1: 0.5: 0.25.Comparison diagram 2 can find with Fig. 4, and the area of each sub-pixel of display panel A4 is greater than the sub-pixel area of display panel A2, will only correspond to the sub-pixel area (shown in Fig. 4 dotted line) of display panel A4 as the area of pixel P2; And owing to each sub-pixel of pixel P4 among the display panel A4 is not only the sub-pixel that belongs to pixel P4, its also be around the sub-pixel of other pixel, therefore as the arrangement of subpixels mode of display panel A4 and arrange in pairs or groups special red, green, blue and the brightness of white sub-pixels weight it is driven, except the transmittance that can improve backlight, also improved exploration on display resolution ratio simultaneously.
In addition, LCD can be divided into penetration, reflective, and three kinds of semi-penetration, semi-reflectives etc. according to the source of illumination light.Penetrating LCD has backlight, by the light penetration display panel of backlight generation.Reflective liquid-crystal display then is provided with the reflecting surface in order to extraneous ray of reflecting in it, the light of display periphery can be entered by the place ahead of display panel, and via reflecting surface light is reflected, once more by display panel, that is it utilizes display periphery light as backlight.Semi-penetrated semi-reflected liquid crystal display then is the LCD that has the pattern of penetrating and reflective-mode simultaneously, when LCD is used in the peripheral environment brightness of outdoor environment or display panel when higher, the backlight of establishing in it just can be closed or be turned down to LCD, and utilize surround lighting as backlight via reflecting surface, promptly mainly come display frame with reflective-mode; And be used in the ambient brightness of indoor environment or display panel when low when LCD, but the just backlight of openable panel of LCD, that is mainly come display frame with the pattern of penetrating, just can save the power consumption of LCD thus.
In sum, when LCD is applied to various portable electronic products widely, power consumption has become its important design reference amount, though as described above, the control function and the collocation that are designed to have semi-penetration, semi-reflective when LCD have the picture element matrix that redness, green, blueness and white sub-pixels are arranged, and can increase the penetrance of backlight and save the power consumption of backlight; But when LCD is operated with reflective-mode, because can being shown the colored filter of panel, reflected light absorbs secondary, it is many to make that catoptrical brightness can descend with respect to the part in white sub-pixels in the part of red, green and blue subpixels, causes the GTG of LCD incorrect.
Summary of the invention
Therefore, one object of the present invention is to provide a kind of display of brightness-adjusting pattern, to address the above problem.
According to one embodiment of present invention, provide a kind of display drive method, described method at first provides the pixel with redness, green, blueness and white sub-pixels; Then, the shows signal of this pixel is provided, and corresponding described shows signal provides at least the first luminance weights and second luminance weights, wherein, it is differing from each other that described first and second luminance weights all comprise the luminance weights of the sub-pixel that has a kind of color between the luminance weights that corresponds respectively to redness, green, blueness and white sub-pixels and described first luminance weights and described second luminance weights at least; Use one of described first luminance weights and second luminance weights to drive described pixel at last, wherein, the luminance weights ratio each other of the pairing described sub-pixel that has a kind of color at least of described first luminance weights and described second luminance weights is between 1/5 to 1/2.
According to another embodiment of the present invention, other provides a kind of display, comprises display panel, has a plurality of pixels, and wherein each described pixel comprises redness, green, blueness and white sub-pixels at least; Driving circuit, receive first shows signal, and corresponding described first shows signal, at least the first luminance weights and second luminance weights are provided, and one of them drives corresponding pixel to use described first luminance weights and described second luminance weights, wherein, described each and second luminance weights all comprise and correspond respectively to redness, green, have at least a kind of luminance weights of sub-pixel of color differing from each other between the luminance weights of blueness and white sub-pixels and described first luminance weights and described second luminance weights, wherein, the luminance weights ratio each other of the pairing described sub-pixel that has a kind of color at least of described first luminance weights and described second luminance weights is between 1/5 to 1/2.
Description of drawings
Fig. 1 is the synoptic diagram of prior art RGB arrangement of subpixels mode;
Fig. 2 to Fig. 4 is the synoptic diagram of prior art RGBW arrangement of subpixels mode;
Fig. 5 is the synoptic diagram of display of the present invention;
Fig. 6 is the synoptic diagram of another embodiment of display of the present invention;
Fig. 7 is the synoptic diagram of another embodiment of display of the present invention;
Fig. 8 is the synoptic diagram of first embodiment of the display panel of Fig. 5;
Fig. 9 is the synoptic diagram of second embodiment of the display panel of Fig. 5;
Figure 10 to Figure 15 is the synoptic diagram of pixel; And
Figure 16 adjusts the method flow diagram of the luminance patterns of display for the present invention.
[main element symbol description]
20 displays, 22 display panels
24 driving circuits, 26 optical inductors
28 sub-pixel processing units, 221 display panels
30 first Polarizers, 32 thin film transistor base plates
34 reflector elements, 36 colored filter substrates
38 second Polarizers, 222 display panels
35 semi-penetrate through reflective plates 42 penetrate light
Embodiment
With reference to figure 5, it is the display synoptic diagram according to first embodiment of the invention.Display 20 comprises display panel 22, driving circuit 24 and optical inductor 26.Display panel 22 is a semi-penetration semi-reflection type liquid crystal panel, so but display 20 have backlight and also environment for use light as backlight.Display panel 22 comprises the picture element matrix with a plurality of pixels, and each pixel is defined by red, green, blueness and white sub-pixels; Wherein, any other arrangement of subpixels mode be arranged or be adopted to the arrangement mode of the sub-pixel of picture element matrix can in pixel rendering technology (pixel rendering technology) mode.Driving circuit 24 comprises data signal processing unit 28.Because each pixel in the picture element matrix of display panel 22 has comprised white sub-pixels, therefore one of function of data signal processing unit 28 is to convert pixel image signal B in order to the pixel image signal A that drives pixel, wherein pixel image signal A has comprised the picture signal of original redness, green and blue sub-image, and pixel image signal B has then comprised redness in the pixel to be shown, green, blueness and the pairing picture signal of white sub-pixels.The transformational relation of pixel image signal A and pixel image signal B can promptly be a kind of mapping (mapping) relation as the formula (1) each other.White sub-pixels in the picture element matrix is used for increasing the efficient that penetrates of light, but under reflective mode, operate if work as display panel 22, because can being shown the colored filter of panel 22, reflected light absorbs secondary, so catoptrical brightness is in redness, the part of green and blue subpixels can descend many with respect to the part in white sub-pixels, therefore display 20 is when using different backlight modes (for example penetrating pattern and reflective-mode etc.), need to use different redness, green, the luminance weights of blueness and white sub-pixels is so that the GTG of each pixel can correctly show.
In an embodiment of the present invention, another function of data signal processing unit 28 is in order to the pixel image signal according to each pixel, and correspondence provides the luminance weights RGBW1 and the RGBW2 of at least two group redness, green, blueness and white sub-pixels.First group of luminance weights RGBW1 is used for display 20 and operates in when penetrating pattern, when second group of luminance weights RGBW2 system is used for display 20 and operates in reflective-mode.Optical inductor 26 is contiguous to be arranged at display panel 22 (or can in be built in the display panel 22), be used for detecting the ambient brightness of display panel 22, and the transmission feedback signal is to driving circuit 24, the user can set the backlight mode of display 20 according to the environment for use of display 20, maybe can set by display 20 and select backlight mode automatically, then driving circuit 24 can come the backlight mode of switching display 20 according to the feedback signal of optical inductor 26.When display 20 is used in the operating environment brightness lower (for example being lower than a certain setting value) of indoor environment or display 20, display 20 will switch to the pattern of penetrating, that is display 20 will light backlight or heighten the brightness of existing backlight, and driving circuit 24 will use first group of luminance weights RGBW1 to drive this respective pixel this moment.And be used in the operating environment brightness of outdoor environment or display 20 when higher (for example being higher than a certain setting value) when display 20, display 20 will switch to reflective-mode, that is display 20 will close backlight or turn down the brightness of existing backlight, and driving circuit 24 will use second group of luminance weights RGBW2 to drive this respective pixel this moment.
What deserves to be mentioned is, be different from the driving circuit of the embodiment of Fig. 5, in another embodiment, for example shown in Figure 6, driving circuit 24 also can comprise first signal processing unit 281 and secondary signal processing unit 282, wherein, the first signal processing unit 281 pixel image signal A that is used for comprising redness, green and blue subpixels picture signal converts the pixel image signal B ' that comprises redness, green, blueness and white sub-pixels picture signal to; 282 luminance weights RGBW1 and RGBW2 that at least two group redness, green, blueness and white sub-pixels are provided according to pixel image signal B ' of secondary signal processing unit.Then, driving circuit 24 uses first group of luminance weights RGBW1 and second group of luminance weights RGBW2 one of them drives respective pixel in the display panel 22.For example, when display 20 when penetrating pattern, then use first group of luminance weights RGBW1 to drive respective pixel; And, then use second group of luminance weights RGBW2 to drive respective pixel when display 20 during in reflective-mode.In addition, in another embodiment, for example shown in Figure 7, driving circuit 24 can directly receive the pixel image signal A that comprises redness, green, blueness and white sub-pixels signal, and the luminance weights RGBW1 and the RGBW2 of at least two group redness, green, blueness and white sub-pixels are provided according to pixel image signal A; Then, as aforementioned, driving circuit 24 uses first group of luminance weights RGBW1 and second group of luminance weights RGBW2, and one of them drives respective pixel.Yet the embodiment of driving circuit 24 of the present invention does not exceed with the respective embodiments described above, and the merit able one that all driving circuits have the respective pixel picture signal and provide at least two group sub-pixel luminance weights is all the present invention and contains.The embodiment of driving circuit 24 can be integrated circuit, chip or any circuit design of carrying out described function in the foregoing description.
With reference to figure 8, Fig. 8 is the synoptic diagram of an embodiment of the display panel 22 of Fig. 5.In this embodiment, display panel 221 comprises first Polarizer 30, thin film transistor base plate 32, reflector element 34, colored filter substrate 36 and second Polarizer 38.Reflector element 34 is arranged on the thin film transistor base plate 32, and each redness, green, blueness and white sub-pixels comprise reflector element 34 respectively, in order to the next light in reflection top.Wherein, can between each sub-pixel, define echo area Re and penetrating region Tr by reflector element 34.Have liquid crystal gap (cell gap) d1 and the d2 of two kinds of differing heights between thin film transistor base plate 32 and the colored filter substrate 36, and can solve reflected light by the gap design of d1 and d2 and penetrate light phase difference problem inequality.As shown in the figure, because it generally corresponds to the Transparent color resistance district Wc of colored filter substrate the white sub-pixels of display panel 221, therefore can be in order to increase the efficient that penetrates of light, but via the reflected light of reflector element 34 reflection in redness, the part of green and blue subpixels can be by the resistance of the look on the colored filter substrate 36 district Bc, Gc and Rc absorb secondary (once reaching reflex time during incident once), make red, green and the brightness that blue subpixels presented are many with respect to the brightness meeting decline of white sub-pixels, therefore display panel 221 needs to use different redness when using different backlight mode operations, green, the luminance weights of blueness and white sub-pixels drives corresponding pixel.
With reference to figure 9, it is the synoptic diagram of another embodiment of the display panel 22 of Fig. 5.In this embodiment, display panel 222 comprises semi-penetration semi-reflective plate 35, TMR (transmissive micro-reflector) plate for example, be arranged at the below of first Polarizer 30, because semi-penetration semi-reflective plate 35 also comprises reflector element, therefore it can make the light penetration that the below is come, and also can reflect the light that the top is come.Semi-penetration semi-reflective plate 35 among this embodiment is arranged at the outside of thin film transistor base plate 32, make the gap between thin film transistor base plate 32 and the colored filter substrate 36 have identical height, therefore the reflected light of semi-penetrate through reflective plate 35 and penetrate the problem that light 42 does not have phase differential, but because the reflected light reflex time is through first Polarizer 30 and the thin film transistor base plate 32 of secondary, thus its light penetrate the display panel 221 that efficient is smaller than Fig. 8.Similarly, white sub-pixels the efficient that penetrates that can increase light is set, but because can be absorbed secondaries (once reaching reflex time during incident once) by colored filter substrate 36 in the part of redness, green and blue subpixels, make that redness, green and the brightness that blue subpixels presented are many with respect to the brightness meeting decline of white sub-pixels, therefore display panel 222 needs to use the luminance weights of different redness, green, blueness and white sub-pixels to drive corresponding pixel when using different backlight mode operations.
With reference to Figure 10, it is that the display panel 222 with Fig. 9 embodiment is the synoptic diagram that example further specifies its pixel intensity mode of operation.In Figure 10, pixel P1 is defined by red, green, blueness and white sub-pixels, and sub-pixel is arranged in traditional arrangement of subpixels mode, promptly be not to arrange with the pixel rendering technical approach, wherein P1a and P1b are respectively the signal that the pixel P1 of display panel 222 operates under pattern of penetrating and reflective-mode, and P1a and P1b are example pixel P1 is shown as white picture.The luminance weights of numeral redness, green, blueness and white sub-pixels among Figure 10; Wherein, hypothesis penetrance red, green, that the look resistance of the pairing colored filter substrate 36 of blue subpixels is distinguished all is 1/3 in this embodiment, and the penetrance of white sub-pixels is 1.Be to use in indoor environment or when under the lower environment of brightness, operating when optical inductor 26 detects display panel 222, when for example the operating environment brightness that detects display panel 222 when optical inductor 26 is lower than a preset value, display 20 will switch to the pattern of penetrating, and also be about to the backlight of display 20 is lighted (unlatching) or increased the brightness that has backlight now; Driving circuit 24 will use first group of luminance weights RGBW1 to drive pixel P1 this moment, shown in the P1a among Figure 10.Penetrate in the pattern at this, all being set at 4 units with the brightness with the redness among the pixel P1, blueness, green and white sub-pixels is that example is come the display white picture, that is this first group of luminance weights RGBW1 value is 4: 4: 4: 4, in other words, the luminance weights ratio of redness, green, blueness and white sub-pixels is 1: 1: 1: 1.
Yet, be to use in outdoor environment or when under the higher environment of brightness, operating when optical inductor 26 detects display panel 222, when for example the operating environment brightness that detects display panel 20 when optical inductor 26 is higher than a preset value, display 20 will switch to reflective-mode, also be about to its backlight is closed or turned down the brightness of existing backlight, driving circuit 24 will use second group of luminance weights RGBW2 to drive pixel P1 this moment, shown in the P1b among Figure 10.Compared to the pattern of penetrating, in this reflective-mode, the brightness of redness, blueness, green and white sub-pixels will be set at 4,4,4 and 4/3 units respectively, that is this second group of luminance weights RGBW2 value is 4: 4: 4: 4/3.Refer again to Fig. 9, among Figure 10 the setting difference of luminance weights shown in P1a and the P1b be because: when display is operated under reflective-mode, the brightness of its redness, blueness and green sub-pixels, with respect to the operation under the pattern of penetrating, will be absorbed once by colored filter substrate more than 36, the penetrance of white sub-pixels then is always 1, so second group of luminance weights RGBW2 value among the P1b is that the white sub-pixels luminance weights is adjusted into 4/3.That is to say, when display 20 uses reflective-mode, because the reflected light of redness, green and blue subpixels can be absorbed once by colored filter substrate more than 36, be the brightness between the balance shades of colour sub-pixel, display 20 is turned down the luminance weights of white sub-pixels, no matter the pixel of display 20 all can obtain more consistent GTG in the operation of reflecting or penetrate under the pattern thus.
Illustrate though the foregoing description is the display panel 222 with Fig. 9 embodiment, yet it also is applicable to display panel shown in Figure 8 221, and its method of operating is identical, does not therefore repeat them here.
Be different from the embodiment of Figure 10, among the embodiment shown in Figure 11, redness, green, blueness and white sub-pixels in the pixel P2 are all arranged with the pixel rendering technical approach.Wherein, P1a and P1b are respectively the signals that pixel P2 operates under pattern of penetrating and reflective-mode, and P1a and P1b are example pixel P2 is shown as white picture.The luminance weights of numeral redness, green, blueness and white sub-pixels among Figure 11.Similarly, hypothesis penetrance red, green, the pairing colored filter substrate 36 of blue subpixels all is made as 1/3 and the penetrance of white sub-pixels is 1 in this embodiment.Be to use in indoor environment or when under the lower environment of brightness, operating when optical inductor 26 detects display panel 20, when for example the operating environment brightness that detects display panel 222 when optical inductor 26 is lower than a preset value, display 20 will switch to the pattern of penetrating, also be about to the backlight of display 20 is lighted or increased the brightness of existing backlight, driving circuit 24 will use first group of luminance weights RGBW1 to drive pixel P2 this moment, shown in the P2a among Figure 11.Penetrating in the pattern at this, is that to be set at 2,2,1 and 4 units respectively with the brightness with red, blue, green and white sub-pixels be that example is come the display white picture; Because among the pixel P2, red sub-pixel has 2, green sub-pixels has 4, blue subpixels has 2, white sub-pixels has 1, so the brightness summation of redness, green, blueness and white sub-pixels all is 4 units, promptly redness, green, blueness and white sub-pixels total brightness weight separately are 4,4,4 and 4 among the pixel P2, that is this first group of luminance weights RGBW1 value is 4: 4: 4: 4.
Yet, be to use in outdoor environment or when under the higher environment of brightness, operating when optical inductor 26 detects display panel 20, when for example the operating environment brightness that detects display panel 20 when optical inductor 26 is higher than a preset value, display 20 will switch to reflective-mode, also be about to its backlight is closed or turned down the brightness of existing backlight, driving circuit 24 will use second group of luminance weights RGBW2 to drive the pixel of display panel 222 this moment, shown in P2b among Figure 11.Compared to the pattern of penetrating, in this reflective-mode, the brightness of red son, blueness, green and the white sub-pixels of pixel P2 is respectively 2,2,1 and 4/3 units; Because in pixel P2, red sub-pixel has 2, green sub-pixels has 4, blue subpixels has 2, white sub-pixels has 1, therefore redness, green, blueness and white sub-pixels total brightness weight separately are 4,4,4 and 4/3 among the pixel P2, and promptly this second group of luminance weights RGBW2 value is 4: 4: 4: 4/3.What deserves to be mentioned is, though being the total brightness weights with each color sub-pixel, above-mentioned first group of luminance weights RGBW1 value and second group of luminance weights RGBW1 value present, but in another embodiment, first group of luminance weights RGBW1 value and second group of luminance weights RGBW1 value also can present with regard to the luminance weights of each sub-pixel of each color.
Refer again to Fig. 9, among Figure 10 the setting difference of luminance weights shown in P1a and the P1b be because, when display is operated under reflective-mode, the brightness of red son, blueness, green sub-pixels is for the operation under the pattern of penetrating, its brightness meeting is absorbed once by colored filter substrate more than 36, the penetrance of white sub-pixels then is always 1, so second group of luminance weights RGBW2 among the P1b is adjusted into 4/3 with the white sub-pixels luminance weights; No matter therefore brightness in thus just can balance pixel P2 between the shades of colour sub-pixel, at reflective-mode or the pattern of the penetrating work of finishing drilling, can make pixel obtain more consistent GTG.
Similarly, among each embodiment of Figure 12 to Figure 14, redness, green, blueness and the white sub-pixels of pixel P3, P4 and P5 adopts other different pixel rendering technical approach to arrange.Wherein P3a, P4a, P5a and P3b, P4b, P5b are respectively the luminance weights signals that respective pixel is operated under pattern of penetrating and reflective-mode, and it is an example respective pixel is shown as white picture all; Numeral among the figure is then represented the luminance weights of redness, green, blueness and white sub-pixels.Similarly, in these embodiments, suppose that penetrance red, green, the pairing colored filter of blue subpixels all is 1/3 and the penetrance of white sub-pixels is 1.Because mode of operation and the pixel P2 of the pixel P3～P5 among Figure 12 to Figure 14 are similar, do not repeat them here.
In addition, special one carry be, the definition of the pixel of display panel is not limited only to above-mentioned form among the present invention, every by red, green, blueness and the defined pixel of white sub-pixels, all be applicable to driving method of the present invention, for example shown in Figure 15, pixel P6 is defined with another kind of pixel rendering technology arrangement mode, and P6a among the figure and P6b are respectively that display panel is operated under pattern of penetrating and reflective-mode and so that pixel P6 was shown as white picture, the luminance weights of each sub-pixel was illustrated.
According to previous embodiment as can be known, one of feature of the present invention is, when display panel is operated under different mode, it will adjust its corresponding luminance weights according to the penetrance of the pairing colored filter substrate of each sub-pixel in each pixel, can make the pixel of display panel have more consistent GTG thus under the different mode operation.For example, in aforementioned each embodiment, under different operation modes, display can be according to the penetrance of colored filter substrate, and adjusts the luminance weights of white sub-pixels accordingly, and its weight adjusted value with respect to other color sub-pixel is 1/3; And this adjusted value can difference generally be between 1/5 to 1/2 according to the penetration value of practical application panel.In addition, though the foregoing description is an example with the luminance weights of adjusting single kind of color sub-pixel (for example white sub-pixels), yet in another is implemented, also can be and adjust the luminance weights of a plurality of different colours sub-pixels accordingly according to the demonstration situation of each sub pixel, for example, when the penetrance in the look resistance district of the colored filter substrate of red, green and blue subpixels correspondence does not wait each other, then can adjust the luminance weights of different colours sub-pixel under penetration and reflective mode accordingly.In like manner, operation spirit according to the foregoing description, also can corresponding different operation modes the weighted value of white sub-pixels be set at unanimity, and adjusts the weighted value of red between different operation modes, green and blue subpixels simultaneously, and this adjusted value the best can be set between 1/5 to 1/2.
Special one carry be, though redness, green, blueness and the white sub-pixels of display panel are looked by the colored filter quality among the cited embodiment of the present invention, yet application of the present invention is not to exceed with the display panel with colored filter, it also can be applicable to any panel that must adjust the luminance weights of redness, green, blueness and white sub-pixels, and then promotes the GTG display quality of pixel.
With reference to Figure 16, it is the process flow diagram of the image element driving method of the embodiment of the invention.Comprise the following step:
Step 210: provide have redness, the pixel of green, blueness and white sub-pixels;
Step 220: the shows signal that this pixel is provided;
Step 230: corresponding described shows signal provides at least the first luminance weights and second luminance weights, wherein this first and second luminance weights each all comprise the luminance weights that corresponds respectively to this redness, green, blueness and white sub-pixels, and have at least a kind of luminance weights of sub-pixel of color differing from each other between this first luminance weights and this second luminance weights;
Step 240: use one of this first luminance weights and this second luminance weights to drive this pixel.
In sum, the image element driving method of the embodiment of the invention, mainly be that picture signal corresponding to pixel provides the luminance weights of the sub-pixel more than at least two groups, and select wherein that one group of sub-pixel luminance weights drives this pixel, wherein have at least luminance weights of sub-pixel of a kind of color differing from each other between these group luminance weights.And the image element driving method of the embodiment of the invention can be applicable to have redness, the display of green, blueness and white sub-pixels, particularly has the display of different operation modes, and for example display has penetration operator scheme and reflective operator scheme.
Above-described only is the preferred embodiments of the present invention, and equivalent modifications and variation that every foundation claim of the present invention is carried out all should belong to coverage of the present invention.
Claims (15)
1. the driving method of a display comprises:
Provide have redness, the pixel of green, blueness and white sub-pixels;
Produce the image display signal of described pixel, and corresponding described image display signal provides at least the first luminance weights and second luminance weights, wherein, each all comprises the luminance weights that corresponds respectively to described redness, green, blueness and white sub-pixels described first and second luminance weights, and has at least a kind of luminance weights of sub-pixel of color differing from each other between described first luminance weights and described second luminance weights; And
Use one of described first luminance weights and described second luminance weights to drive described pixel,
Wherein, the luminance weights ratio each other of the pairing described sub-pixel that has a kind of color at least of described first luminance weights and described second luminance weights is between 1/5 to 1/2.
2. the method for claim 1, wherein described first luminance weights and described second luminance weights correspond respectively to the different operation modes of described display.
3. the luminance weights of the white sub-pixels between the method for claim 1, wherein described first luminance weights and described second luminance weights is inequality.
4. the luminance weights of pairing redness, green and blue subpixels between the method for claim 1, wherein described first luminance weights and described second luminance weights is inequality.
5. the method for claim 1 also comprises:
Detecting the working environment state of described display, wherein, select the step of one of described first luminance weights and described second luminance weights, is that the result of the described detection of foundation carries out.
6. method as claimed in claim 5 wherein, when the brightness of the working environment of described display during less than a preset value, then selects described first luminance weights to drive described pixel.
7. the method for claim 1, wherein described redness, green, blueness and white sub-pixels are to arrange with the pixel rendering technical approach.
8. display comprises:
Display panel has a plurality of pixels, and wherein, each described pixel comprises redness, green, blueness and white sub-pixels at least;
Driving circuit, receive first image display signal, and corresponding described first image display signal, at least the first luminance weights and second luminance weights are provided, and one of them drives respective pixel to use described first luminance weights and described second luminance weights, wherein, each all comprises described first and second luminance weights and corresponds respectively to redness, green, the luminance weights of blueness and white sub-pixels, and have at least a kind of luminance weights of sub-pixel of color differing from each other between described first luminance weights and described second luminance weights
Wherein, the luminance weights ratio each other of the pairing described sub-pixel that has a kind of color at least of described first luminance weights and described second luminance weights is between 1/5 to 1/2.
9. display as claimed in claim 8, wherein, described first image display signal comprises the image display signal of redness, green, blueness and white sub-pixels.
10. display as claimed in claim 8, wherein, described driving circuit before the step that described at least first luminance weights and described second luminance weights are provided, corresponding described first image display signal and produce second image display signal.
11. display as claimed in claim 10, wherein, described first image display signal comprises the image display signal of redness, green and blue subpixels, and described second shows signal comprises the image display signal of redness, green, blueness and white sub-pixels.
12. display as claimed in claim 8 also comprises optical inductor, is used for detecting the ambient brightness of described display panel, and the transmission feedback signal is to described driving circuit.
13. display as claimed in claim 8, wherein, each described redness, green, blueness and white sub-pixels comprise reflector element respectively, in order to reflect the external light source of described display.
14. display as claimed in claim 8, wherein, described redness, green, blueness and white sub-pixels are to arrange with the pixel rendering technical approach.
15. display as claimed in claim 8, wherein, described first luminance weights and described second luminance weights correspond respectively to the different operation modes of described display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101928756A CN101452671B (en) | 2007-11-28 | 2007-11-28 | Display and drive method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101928756A CN101452671B (en) | 2007-11-28 | 2007-11-28 | Display and drive method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101452671A CN101452671A (en) | 2009-06-10 |
| CN101452671B true CN101452671B (en) | 2010-09-29 |
Family
ID=40734878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101928756A Active CN101452671B (en) | 2007-11-28 | 2007-11-28 | Display and drive method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101452671B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137075A (en) * | 2011-12-05 | 2013-06-05 | 联想(北京)有限公司 | Terminal device and display control method |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101399304B1 (en) * | 2009-10-08 | 2014-05-28 | 엘지디스플레이 주식회사 | Liquid crystal display device and method of driving the same |
| CN102402088A (en) * | 2011-12-02 | 2012-04-04 | 深圳市华星光电技术有限公司 | Pixel matrix, array substrate, liquid crystal display device and driving method |
| CN103456280A (en) * | 2012-06-01 | 2013-12-18 | 北京凡达讯科技有限公司 | Method for displaying RGB color image |
| DE112013000202B4 (en) | 2012-09-26 | 2017-02-02 | Beijing Lenovo Software Ltd. | Display method and electronic device |
| CN109600515A (en) * | 2013-06-18 | 2019-04-09 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN104715701B (en) * | 2013-12-11 | 2017-09-26 | 鸿富锦精密工业（深圳）有限公司 | Display device and its driving method |
| CN104050945B (en) * | 2014-06-26 | 2016-09-14 | 深圳市华星光电技术有限公司 | Color sequence liquid crystal display and driving method thereof |
| TWI537913B (en) * | 2014-10-14 | 2016-06-11 | 友達光電股份有限公司 | Display method and display device |
| CN104575422B (en) | 2014-12-29 | 2017-01-18 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and driving method thereof |
| CN104778939B (en) * | 2015-04-29 | 2018-03-16 | 京东方科技集团股份有限公司 | The adjusting method and adjusting means of the display brightness of display device, display device |
| CN106409266B (en) * | 2016-12-14 | 2019-09-17 | Tcl集团股份有限公司 | One sub-pixel rendering method and rendering device |
| CN110827781B (en) * | 2019-11-26 | 2022-04-26 | 上海天马微电子有限公司 | Adjusting circuit, display screen, display device and display method |
| CN113035126B (en) * | 2021-03-10 | 2022-08-02 | 京东方科技集团股份有限公司 | Pixel rendering method and system, readable storage medium and display panel |
| CN115202140A (en) * | 2021-04-14 | 2022-10-18 | 中强光电股份有限公司 | Projection device and brightness control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004012004A1 (en) * | 2002-07-26 | 2004-02-05 | Samsung Electronics Co., Ltd. | Liquid crystal display device |
| CN101025492A (en) * | 2006-02-16 | 2007-08-29 | 爱普生映像元器件有限公司 | Electrooptic device, driving circuit, and electronic device |
-
2007
- 2007-11-28 CN CN2007101928756A patent/CN101452671B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004012004A1 (en) * | 2002-07-26 | 2004-02-05 | Samsung Electronics Co., Ltd. | Liquid crystal display device |
| CN101025492A (en) * | 2006-02-16 | 2007-08-29 | 爱普生映像元器件有限公司 | Electrooptic device, driving circuit, and electronic device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137075A (en) * | 2011-12-05 | 2013-06-05 | 联想(北京)有限公司 | Terminal device and display control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101452671A (en) | 2009-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101452671B (en) | Display and drive method thereof | |
| US8502839B2 (en) | Transflective display device and driving method thereof | |
| CN101393360B (en) | Display device, method, and terminal device having switchable viewing angle | |
| KR100763271B1 (en) | Liquid crystal display device and driving method used for the same | |
| CN100432771C (en) | Electro-optical device and electronic apparatus | |
| JP7326433B2 (en) | Display device | |
| CN101669064B (en) | Backlight device and liquid crystal display incorporating the same | |
| US7530722B2 (en) | Illumination device, electro-optical device, and electronic apparatus | |
| CN100543545C (en) | Dark state light recycling film and display | |
| CN101329469B (en) | Transreflective liquid crystal display | |
| CN103185979B (en) | Display panel, display device and driving method of display device | |
| KR101852429B1 (en) | Liquid micro shutter display device | |
| US20060125982A1 (en) | Liquid crystal display | |
| CN111766739B (en) | Display module and display device | |
| CN103680420A (en) | Display device | |
| KR20200031781A (en) | Stereoscopic reflection pattern, backlight unit, display device | |
| CN114200718B (en) | Liquid crystal display device and driving method | |
| CN101169557A (en) | Liquid crystal display possessing light-emitting diode backlight module and light correction unit | |
| KR20060000606A (en) | Lcd with a back-light assembly | |
| CN102998835B (en) | Liquid crystal display device having a plurality of pixel electrodes | |
| CN101853644B (en) | Display and color adjustment method for the same | |
| CN104793393A (en) | Display panel and display device | |
| CN117420707B (en) | Double-sided display device and driving method thereof | |
| JP2004177726A (en) | Display device | |
| KR100685432B1 (en) | Liquid Crystal Display Device for having a common backlight unit used in LCD of FS-driving type or LCD of CF-driving type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |