CN1716013A - Color filter, color image display device, and electronic apparatus - Google Patents
Color filter, color image display device, and electronic apparatus Download PDFInfo
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- CN1716013A CN1716013A CNA2005100798192A CN200510079819A CN1716013A CN 1716013 A CN1716013 A CN 1716013A CN A2005100798192 A CNA2005100798192 A CN A2005100798192A CN 200510079819 A CN200510079819 A CN 200510079819A CN 1716013 A CN1716013 A CN 1716013A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/026—Control of mixing and/or overlay of colours in general
Abstract
The present invention provides a color image display device which improves color reappearance performance by a color filter consisting of RGB and YMC6. The invention comprises a display faceplate with the color filter which forms one pixel area with red, green, blue, yellow, fuchsin and cyan color filter areas, a color calculating part which generates a six-color signal comprising red, green, blue, yellow, fuchsin and cyan signals based on a RGB signal input from outside and a control part which controls the display of each color filter area of the display faceplate based on the six-color signal and displays an image corresponding to the RGB signal at the display faceplate. Except the red, green and blue color filter areas, the present invention is also provided with the yellow, fuchsin and cyan color filter areas, and one pixel area is formed by the areas, which can enlarge the color display range. Besides, even if an input image datum is the RGB signal, the yellow, fuchsin and cyan signals can also be generated and are displayed by the six-color signal, and the general RGB signal can also be used.
Description
Technical field
The present invention relates to the technology category of electro-optical devices such as liquid-crystal apparatus and electronic equipment.In addition, the present invention also relates to technology categories such as electrophoretic apparatuss such as Electronic Paper and EL (electroluminescence) device.
Background technology
In recent years, in mobile terminal devices such as portable phone, PDA, use color image display devices such as color liquid crystal display arrangement.For example, under the situation of liquid crystal indicator, on the side by a pair of transparency carrier that forms at holding liquid crystal color filter is set, thus can display color.General color filter constitutes by the 3 look color filter regions of arranging red (R), green (G), blue (B) according to additive color mixing system repeatedly.That is, be adjacent to form the color filter regions and the blue color filter regions of red color filter regions, green, utilize the 3 look color filter regions of these RGB to form 1 colored pixel.
So, in the color image display device of the 3 look color filters that utilize RGB,, be only limited to the interior color in zone by the color triangle regulation of the RGB on the so-called XYZ chromaticity diagram utilizing the RGB3 look to carry out the color that can show under the colored situation about showing.In addition, in color printer etc.,, utilize yellow (Y), magenta (M) and blue-green (cyan) the black printing color image of 3 looks (dosing 4 looks of tusche as required) such as (C) according to substractive color mixing system.Printer had originally in ability that can color reproduction on by the whole zone of these YMC 3 looks regulation on the chromatic diagram.But, usually, owing in printer, become the RGB the data mostly source images of print object is to be fit to display device, so printer is transformed into the YMC data in inside with the RGB data look of input, use YMC ink print source images of all kinds.Therefore, when when same source images is shown on display device and with printer, printing, color reproduction difference, the coupling deficiency of the look between display device and printer.
In addition, patent documentation 1 has been put down in writing in the reflection-type color liquid crystal device, replaces RGB 3 looks and the formation of the color filter of YMC 3 looks is set.In addition, patent documentation 2 has been put down in writing: be adjacent to dispose the color filter and the glaucous color filter of the redness with complementary colors relation in 1 pixel, carry out the formation that white, red, black look shows with 1 pixel.In addition, patent documentation 3 has been put down in writing and has been utilized the RGB3 look to constitute in the colour display device of 1 pixel, by pressing each colored unit controlling and driving of putting of RGB, improves the method for the resolution (resolution) of display image.
Patent documentation 1:WO97/45766 communique
Patent documentation 2: the spy opens flat 9-230310 communique
Patent documentation 3: the spy opens flat 3-201788 communique
Summary of the invention
The objective of the invention is to, a kind of color image display device that can improve color reproduction by the color filter that uses RGB and YMC6 look to constitute is provided.
In one aspect of the invention, a kind of color filter that is used for color image display device is provided, wherein, the zone of 1 pixel of formation has red color filter zone, green color filter zone, blue color filter zone, yellow color filter zone, magenta color filter zone and blue-green color filter regions.So, except that red, green, blue color filter regions, also be provided with yellow, magenta, glaucous color filter regions,, can enlarge displayable color range by constitute the zone of 1 pixel by all these zones.
In a mode of above-mentioned color filter, described red color filter zone is adjacent mutually with described blue-green color filter regions, and on a direction alignment arrangements; Described green color filter zone is adjacent mutually with described magenta color filter zone, and on a described direction alignment arrangements; Described blue color filter zone is adjacent mutually with described yellow color filter zone, and on a described direction alignment arrangements.
According to this mode, owing to be adjacent to be provided with red and blue-green, green and magenta, blueness and yellow these have the combination of the look of complementary colors relation, so can carry out black and white (grey) demonstration by each combination.That is, independently carry out white and black displays, can make substantial resolution become 3 times, thereby can improve the resolution in the white and black displays such as text by above-mentioned 3 kinds of combinations.In addition, owing to utilize combination to carry out white and black displays, therefore do not produce painted (colour contamination) with complementary colors relation.
In a mode of above-mentioned color filter, described red color filter zone, described green color filter zone and described blue color filter zone are configured to row and formation RGB color filter regions on the direction vertical with a described direction; Described yellow color filter zone, described magenta color filter zone and described blue-green color filter regions are configured to row and formation YMC color filter regions on the direction vertical with a described direction; Described RGB color filter regions and described YMC color filter regions are adjacent to configuration.
According to this mode,, also can carry out white and black displays by the YMC color filter regions, so, can make resolution become 2 times about white and black displays owing to can utilize the RGB color filter regions to carry out white and black displays.
A kind of color image display device in another aspect of this invention, possess: display panel, it has color filter, wherein, the zone of 1 pixel of formation has red color filter zone, green color filter zone, blue color filter zone, yellow color filter zone, magenta color filter zone and blue-green color filter regions; The look operational part, it generates 6 chrominance signals that comprise danger signal, green, blue signal, yellow signal, magenta signal and blue-green signal based on the rgb signal from the outside input; And control part, it controls the demonstration of the color filter regions of all kinds of described display panel based on described 6 chrominance signals, shows the image corresponding with described rgb signal on described display panel.
According to above-mentioned color image display device, except that the color filter regions of red, green, blue, yellow, magenta, glaucous color filter regions are set also, by constitute the zone of 1 pixel by all these zones, can enlarge displayable color range.In addition, though the input view data be under the situation of rgb signal, also can generate yellow, magenta, glaucous signal in view of the above, thereby utilize 6 chrominance signals to show, so also can utilize the rgb signal of general use.
In a mode of above-mentioned colour display device, described look operational part possesses: the unit that generates described yellow signal by the logic and operation of contained R signal of described rgb signal and G signal; Generate the unit of described magenta signal by the logic and operation of contained R signal of described rgb signal and B signal; Generate the unit of described blue-green signal with logic and operation by contained G signal of described rgb signal and B signal.So, by utilizing the simple calculation process of rgb signal, can generate yellow, magenta and glaucous signal.
In addition, about the redness in 6 chrominance signals, green and blue signal, described look operational part also can be exported R signal contained in the described rgb signal, G signal and B signal respectively as the danger signal in described 6 chrominance signals, green and blue signal.In addition, on the other hand also can for: deduct described yellow signal and described magenta signal from described R signal ratio in accordance with regulations and generate described danger signal; From described G signal ratio in accordance with regulations deduct described yellow signal and described blue-green signal and and generate described green; That deduct described magenta signal and described blue-green signal from described B signal ratio in accordance with regulations and and generate described blue signal.
In the another way of above-mentioned colour display device, described look operational part possesses: judge that described rgb signal is the black white image or the detection unit of coloured image; Judging that described rgb signal is to detect line segment from described rgb signal under the situation of black white image, generates the black white image handling part of 6 chrominance signals that show the line segment that detects; With judging that described rgb signal is the Color Image Processing portion that generates 6 chrominance signals that show described cromogram under the situation of coloured image from described rgb signal.
In this mode, judge that the rgb signal of input is black white image or coloured image, utilize diverse ways to generate 6 chrominance signals in view of the above.Specifically being, is under the situation of black white image at the rgb signal of importing, because this image of anticipation is the image that comprises literal or figure etc., therefore detects wherein contained line segment, and generation shows 6 color images of these line segments.According to 6 look color filters of the present invention, owing to can improve the resolution of vertical and horizontal to black white image, so, can clearly illustrate the view data of expression text etc. by generate 6 chrominance signals with said method by its configuration.In addition, be under the situation of coloured image at the rgb signal of importing, owing to generate and corresponding 6 chrominance signals of this cromogram.Thereby, can adopt 6 look color filters of the present invention, at wide color reproduction zone color display.
In preferred example, described detection unit possesses: the unit that described rgb signal is transformed into YUV signal; During less than setting, judge that this rgb signal is a black white image with U signal in described YUV signal and V signal, during more than or equal to setting, judge that this rgb signal is the unit of coloured image at described U signal and V signal.In such cases, can obtain luminance signal (Y-signal) component and colour difference signal (U, V signal) component from rgb signal, based on the ratio of colour difference signal component, judge that accurately rgb signal is black white image or coloured image.
In addition, in preferred example, described black white image handling part utilizes line segment to detect matrix and detects described line segment.
In addition, described Color Image Processing portion, the ranking operation by to the pixel of the stated number that constitutes described rgb signal generates described 6 chrominance signals.When generating 6 chrominance signals, generate 6 chrominance signals based on the pixel of the stated number of rgb signal from rgb signal.At this moment, described Color Image Processing portion carries out matrix operation by the pixel to described stated number, generates described 6 chrominance signals, can improve the resolution of coloured image in fact.
In addition, constitute electronic equipment, the electronic equipment that can show wide color reproduction scope can be provided by utilizing above-mentioned color image display device.
Description of drawings
Fig. 1 is the chromatic diagram of the color reproduction scope of expression color filter of the present invention;
Fig. 2 represents the arrangement of color filter regions of all kinds;
Fig. 3 represents the dichroism of color filter of all kinds;
Fig. 4 is the formation of the display device of schematic representation the 1st embodiment;
Fig. 5 is the computing example in the expression look operational part shown in Figure 4;
Fig. 6 is the formation of variation of the display device of schematic representation the 2nd embodiment;
Fig. 7 is the computing example in the expression look operational part shown in Figure 6;
Fig. 8 is the block diagram of formation of the display device of expression the 3rd embodiment;
Fig. 9 is the block diagram of concise and to the point formation of the look transformation component of expression the 3rd embodiment;
Figure 10 is the functional block diagram of the look transformation component of expression the 3rd embodiment;
Figure 11 is the process flow diagram of the look conversion process of expression the 3rd embodiment;
Figure 12 represents the middle matrix that uses of the linearize processing (line) of the 3rd embodiment;
Figure 13 represents colour element drafting (rendering) processing one example of the 3rd embodiment;
Figure 14 represents another example that the colour element drafting of the 3rd embodiment is handled;
Figure 15 represents to use the formation of display panels of the present invention;
Figure 16 represents to use the example of electronic equipment of the present invention.
Symbol description
10,10a-display device, 12,12a-look operational part, 14-display panels, 16-driver, 18-liquid crystal display part, 20-RGB signal, 22-6 chrominance signal, 24-YMC signal.
Embodiment
Below, implement preferred embodiment of the present invention with reference to description of drawings.In addition, in the following description, the example as using electro-optical panel of the present invention illustrates display panels.
[color filter]
At first, illustrate according to color filter of the present invention.Be characterised in that in the present invention, except that RGB 3 looks that use as common color filter, constitute the color filter of total 6 looks in the zone that also has YMC 3 looks.In addition, in the following description,, be expressed as " YMC ", when only referring to yellow, use " YL " as symbol referring to YMC 3 looks when whole.In addition, use " Y " as the symbol of brightness (briliancy) signal of presentation video signal, to distinguish the symbol of yellow signal and luminance signal.
The color reproduction zone of the color filter shown in Fig. 1 is illustrated on the XYZ chromaticity diagram.The color reproduction zone 2 of 3 dihedrals shown in the dotted line is color reproduction zones of the color filter of RGB 3 looks, and each summit 5R, 5G and 5B the demonstration look with red, green and blue respectively are corresponding.That is, under the situation of the color filter that adopts RGB 3 looks, the look that can reproduce is the look in the color reproduction zone 2.
In addition, except that RGB, also use the color reproduction zone 3 of the 6 look color filters of YMC to be 6 dihedrals shown in the solid line.Each summit 6YL, 6M and 6C are corresponding with yellow, magenta, glaucous color respectively.By also use the color filter of YMC except that RGB, the color reproduction zone that this display device can show increases, and can show colorful color.This is very suitable for being in harmonious proportion Show Color under the situation of the black Show Color by printer etc. and under the situation with display device Show Colors such as liquid crystal indicators.
Fig. 2 represents the configuration example of color filter.1 pixel of the color filter of general RGB 3 looks, shown in Fig. 2 (a), R, G, B color filter regions of all kinds and constitute 1 pixel side by side.Relative therewith, 1 of 6 look color filters pixel according to an embodiment of the invention, shown in Fig. 2 (b), the color filter regions of 6 looks by arranging R, G, B, YL, M, C constitutes.So, the color filter by use has the color filter regions of 6 looks as mentioned above, can enlarge the color reproduction zone.
By Fig. 2 (a) and Fig. 2 (b) as can be seen, under the situation of 6 look color filters shown in Fig. 2 (b), compare, increased the area of 1 pixel with 3 look color filters shown in Fig. 2 (a).That is, display resolution and its correspondingly reduce.But,, in white and black displays, can compensate the reduction of this resolution according to present embodiment.This point below is described.
Usually, the resolution height of the known mankind's visual characteristic when the identification white and black displays, and the resolution when identification colors is so not high.This be because: the cell number on the retina of identification black and white is many, and the cell number on the retina of identification colors is few etc.Therefore, by adopting 6 look color filters, as mentioned above,,, just can not produce so big harmful effect if can when white and black displays, compensate to it though produce the reduction of resolution.
For this reason, in the present embodiment, shown in Fig. 2 (b), at first, respectively in the combination of transversely arranged RGB and YMC.Because can carrying out black and white (grey), the combination of 3 looks by RGB shows, the combination of 3 looks by YMC also can be carried out white and black displays, so under the situation of white and black displays, 1 pixel shown in Fig. 2 (b), shown in Fig. 2 (d), can be in the white and black displays of vertically carrying out 2 pixel parts.That is, even under the situation that adopts 6 look color filters shown in Fig. 2 (b),, shown in Fig. 2 (d), also can make the resolution of above-below direction reach 2 times for white and black displays.
In addition, in the present embodiment, shown in Fig. 2 (b), vertically disposing look side by side with complementary colors relation.What is called has the look of complementary colors relation, specifically is meant R and C, G and M, B and YL.Therefore, with upper and lower to the mode of arranging them, vertically and the color filter of 6 looks of landscape configuration R, G, B, YL, M, C.
Fig. 3 represents the optical transmission characteristics example of the color filter of 6 looks.As shown in the figure, owing to cover total wavelength by the color filter of R and C, if, just can utilize their combination to carry out white and black displays therefore with the color filter regions of identical data (being the same grayscale value) expression R and C.For example, under 256 image gray data conditions,, just show black, if be defined as 0 with regard to display white if the gray-scale value of the color filter regions of R and C all is defined as 256.In addition, if, just can carry out the grey demonstration with the color filter regions of same grayscale value (for example 128) expression R and C.This also is same for the combination of G and M and the combination of B and YL.Thereby the combination of the look by having complementary colors relation can constitute 1 monochrome pixels.
Fig. 2 (c) represents this situation.In the example of Fig. 2 (c), respectively the combination of R and C and the combination of B and YL are defined as black display, the combination of G and M is defined as white shows.So, as long as be adjacent to dispose combination, just can constitute 1 monochrome pixels by this with complementary colors relation.Therefore, shown in Fig. 2 (c),, can carry out the demonstration of horizontal 3 pixel parts, can laterally resolution be arranged to 3 times about white and black displays.
In addition, in recent years, proposed when utilizing RGB 3 looks to carry out colored the demonstration etc. to show to improve the method (for example described patent documentation 3 etc.) of resolution with RGB sub-pixel unit's control of all kinds, but, therefore unavoidably in the display pixel of reality, occur painted because this method need make RGB gray-scale value difference of all kinds.To this, use the said method of the combination of complementary colors, owing to represent to have the color filter regions of the look of complementary colors relation, so have and do not produce painted advantage with same gray-scale value.
Can think so, compare when for example carrying out white and black displays that owing to can improve resolution, therefore being presented at when reading on the display device at the text that makes black and white etc. to become the easier demonstration of seeing with the color filter that utilizes RGB 3 looks in the past.
In addition, in the example of Fig. 2 (b), also can change the upper and lower relation of the color filter regions of the color filter regions of RGB and YMC.In addition, the horizontal arrangement of RGB also can be changed (for example, being R, B, G etc. from left to right), but in such cases, also needs vertically to arrange 2 looks with complementary colors relation.In addition, can certainly change in length and breadth direction (that is, RGB vertically is arranged in 1 row, CMY and vertically is arranged in 1 row, formation that they are transversely arranged then).
[display device]
(the 1st embodiment)
Below, the 1st embodiment of the display device of using 6 above-mentioned look color filters is described.Fig. 4 represents the configuration example of the display device 10 of the 1st embodiment.This display device 10 can be used in the portable terminal of portable phone, PDA etc.In Fig. 4, the display device 10 of present embodiment has look operational part 12 and display panels 14.Display panels 14 has liquid crystal indicator 18 and driver 16.
To display device 10, from outside input rgb signal 20.Rgb signal 20 comprises R signal Sr, G signal Sg and B signal Sb.Look operational part 12 generates 6 chrominance signals 22 by the rgb signal 20 of input.6 chrominance signals 22 are and the corresponding signal of each chrominance signal of R, G, B, YL, M, C, are supplied to the driver 16 in the display panels 14.
Liquid crystal display part 18 is to use the liquid crystal display part of described 6 look color filters.Driver 16 drives each pixel of liquid crystal display part 18 based on 6 chrominance signals 22 of input.Thus, as illustrated in Fig. 2 (b), drive each pixel that constitutes by 6 look color filters, show the image of importing as rgb signal 20 at liquid crystal display part 18.
Below, describe look operational part 12 in detail.Look operational part 12 by the rgb signal of input generate be located at liquid crystal display part 18 in the 6 corresponding chrominance signals of each color filter regions of 6 look color filters.
The 1st generation method of 6 chrominance signals at first, is described.RGB dichroism, YMC of all kinds dichroism of all kinds as shown in Figure 3.Therefore, for example can generate blue-green signal Sc according to the logical and (AND) of blue signal Sb and green Sg.Equally, can generate magenta signal Sm, can generate yellow signal Sy according to the logical and of green Sg and danger signal Sr according to the logical and of blue signal Sb and danger signal Sr.Fig. 5 represents to generate the computing of YL, M, C signal of all kinds by logical circuit.In addition, RGB signal of all kinds can directly adopt the signal as rgb signal 20 inputs.Therefore, can obtain each colouring component of 6 chrominance signals by the following stated.
Rout＝Sr
Gout＝Sg
Bout＝Sb
Cout＝Sg?AND?Sb
Mout＝Sb?AND?Sr
YLout＝Sr?AND?Sg
The 2nd generation method of 6 chrominance signals then, is described.In the 1st generation method,, directly use each chrominance signal of the rgb signal 20 of input simultaneously as output, so the original figure image height of the concentration ratio of display image owing to generate YL, M, C signal of all kinds based on the rgb signal 20 of input.In the 2nd generation method, YL, M, C signal and the 1st generation method of all kinds generate in the same manner, deduct the component (and use) that reflects the YMC signal but RGB output signal of all kinds is in accordance with regulations a ratio from each chrominance signal of rgb signal 20 of input.Specifically be to obtain each colouring component of 6 chrominance signals by the following stated.
Rout＝b{Sr-a(Yout+Mout)}
Gout＝b{Sg-a(Yout+Cout)}
Bout＝b{Sb-a(Mout+Cout)}
Cout＝Sg?AND?Sb
Mout＝Sb?AND?Sr
YLout＝Sr?AND?Sg
Herein, a and b are the definite coefficients of design according to the strength component of all kinds of 6 look color filters.
So, according to the 2nd generation method, can make as a whole concentration near the concentration of source images.In addition, utilize this method, not only the rgb signal from input generates the YMC signal, and can realize utilizing any adjusting of the color reproduction of 6 look color filters.That is, determine coefficient a and b, can in this display device, realize desired color reproduction by the characteristic of considering 6 look color filters.
(the 2nd embodiment)
The 2nd embodiment of display device then, is described.Fig. 6 represents the formation of the display device 10a of the 2nd embodiment.In display device shown in Figure 4 10, input rgb signal 20 generates 6 chrominance signals, display image in the display panels 14 that 6 look color filters are installed in view of the above.In this variation, display device 10a constitutes in the mode that also can import YMC signal 24.That is, same with display device 10 under situation as rgb signal 20 input source images, from each chrominance signal of rgb signal 20 generations 6 looks, supply with display panels 14.In addition, under the situation as YMC signal 24 input source images, look operational part 12a generates 6 chrominance signals 26 from YMC signal 24, supplies with display panels 14.
Look operational part 12a under the situation of input YMC signal 24, carries out generating from the YMC signal look computing of rgb signal.This computing is similar to the computing of described rgb signal to the YMC signal.That is,, can obtain the R signal, can obtain the G signal, can obtain the B signal according to the logical OR of C signal and M signal according to the logical OR of C signal and Y-signal according to the logical OR (OR) of M signal and Y-signal as can be seen from Figure 3.Be that look operational part 12a can be according to logical circuit generation rgb signal shown in Figure 7 for the input of YMC signal.
In such cases, YMC signal as the output of 6 chrominance signals, also can be same with the 1st generation method of described YMC signal, directly use the YMC signal of input, also can be same with the 2nd generation method, ratio in accordance with regulations deducts from the component of the rgb signal of YMC signal generation from original YMC signal.
According to the display device 10a of this variation, for example can be suitable for very much the purposes etc. that color reproduction with approximate print result shows the source images that utilizes the printer printing.That is, by on the display panels 14 that 6 look color filters are installed, showing source image data as rgb signal or the input of YMC signal, can be by on display device 10a, showing with the equal color reproduction of the color reproduction that obtains by printer.
(the 3rd embodiment)
The 3rd embodiment of display device then, is described.Fig. 8 represents the formation of the display device 10b of the 3rd embodiment.As shown in the figure, the display device 10b of the 3rd embodiment, same with the display device 10 of the 1st embodiment, receive rgb signal 20 as input signal.But in the 3rd embodiment, look operational part 12b uses and the 1st embodiment diverse ways, generates and export 6 chrominance signals 28.
As mentioned above, the advantage of 6 look color filters of the present invention is for colour picture signal, compare with the common color filter that has only RGB, has wide color reproduction zone, in addition, it is characterized in that, owing to constitute 1 colored pixel with the pixel of 6 looks, therefore cause reduction resolution, but can compensate the reduction of resolution for black white image by the arrangement of 6 above-mentioned looks.
In the 3rd embodiment, utilize this feature, judge that input picture is black white image (netrual colour) or coloured image (chromatic colour), and under situation separately, carry out different processing.Specifically being, is under the situation of black white image at input picture, detects line segment (ordinate and horizontal line) from input picture, by distributing white or black by each pixel, emphasizes the demonstration of line segment.Thus, be under the situation of text etc. at input picture, clearly display text, figure etc.
In addition, be under the situation of coloured image at input picture, from the pixel data of the stated number of input image data, generate 6 chrominance signals that are fit to 6 look color filters of the present invention.At this moment, by using the matrix of regulation, and consider the gray-scale value of the pixel that it is peripheral, determine the gray-scale value of specific pixel, the processing that also improves resolution in fact.
The block diagram of the concise and to the point formation of the look transformation component 12b of Fig. 9 when to be expression with software processes carry out look conversion to 6 look color filters.Look transformation component 12b constitutes by connect CPU30, program storage 31, network I/F32, display I/F33, I/O device 34 on bus 35.Program storage 31 storages look conversion process program described later.Network I/F32 is used for obtaining source images etc. from network.Display I/F33 is the interface that is used for supplying with to display panels 14 6 chrominance signals 28 that obtain by the look conversion.I/O device 34 is used devices of selection/indication of user's selection of comprising source images etc.CPU30 except that each inscape of control look transformation component 12b, is stored in look conversion program in the program storage 31 by execution, carries out look conversion process described later.
Figure 10 is the functional block diagram of look transformation component 12b.Look transformation component 12b possesses detection unit 41, black white image handling part 42, Color Image Processing portion 43, gamma transformation component 44 on function.In addition, these inscapes realize by the regulated procedure that execution CPU30 is stored in the program storage 31 basically.
The rgb signal 20 that is input to look transformation component 12b is input to detection unit 41, black white image handling part 42, Color Image Processing portion 43.41 pairs of rgb signals of detection unit 20 carry out the YUV conversion, generate brightness signal Y and colour difference signal U and V.Then, based on the colour difference signal that obtains, judge that the rgb signal of input is black white image or coloured image.Specifically be, whether judge colour difference signal U and V, under less than the situation of setting X, judge that input picture is a black white image, judge that input picture is a coloured image under more than or equal to the situation of X at setting less than setting X.As setting X, for example can use about " 0.1 " (promptly 10%).In such cases, be black white image with colouring component less than 10% image specification, be coloured image with colouring component more than or equal to 10% image specification.The result of determination signal 61 that so obtains is transmitted to black white image handling part 42 and Color Image Processing portion 43.
Black white image handling part 42 shows that at result of determination signal 61 input pictures are to work under the situation of black white image, carries out linearize described later and handles, and generates the picture signal 62 of underline, gives gamma transformation component 44.In addition, Color Image Processing portion 43 shows that at result of determination signal 61 input pictures are to work under the situation of coloured image, draws by colour element described later and handles, and generates the picture signal 63 that improves resolution, gives gamma transformation component 44.Gamma transformation component 44 to the picture signal of supplying with 62,63, carries out the gamma conversion and as 28 outputs of 6 chrominance signals based on the gamma characteristic of regulation.
Figure 11 is the process flow diagram of the look transformation component 12b look conversion process of carrying out.In addition, this look conversion process as previously mentioned, is carried out the look conversion program by CPU30, realizes the function as each inscape shown in Figure 10.At first, detection unit 41 receives view data (being rgb signal 20) (step S1) from the outside.Then, detection unit 41 carries out the YUV conversion to view data, generates colour difference signal U and V, by they and setting X are compared, judges that input picture is black white image (netrual colour) or coloured image (chromatic colour) (step S2).
Be that (step S2, Yes), black white image handling part 42 carries out linearize to be handled under the situation of black white image at input picture.In addition, be under the situation of coloured image that (step S2, No), Color Image Processing portion 43 carries out colour element and draws and handle at input picture.So, generate the picture signal 62 or the colored picture signal 63 of black and white.Then, gamma transformation component 44 after any signal wherein being implemented gamma conversion etc., is exported to display panels 14 as 6 chrominance signals 28.
Below, describe the linearize that utilizes black white image handling part 42 to carry out in detail and handle.
(1) when 6 pixel datas generates 6 chrominance signals
Generate under the situation of 6 chrominance signals in data from 6 pixel parts of input picture (horizontal 3 pixels * vertical 2 pixels), black white image handling part 42 is for the Y-signal of 6 pixel parts of input picture, adopt horizontal line shown in Figure 12 to detect matrix and ordinate detection matrix, detect ordinate and horizontal line.Figure 12 (a) is that horizontal line detects matrix, and the matrix in left side detects the horizontal line (black line) of the upside in the zone that is arranged in 6 pixels, and the matrix on right side detects the horizontal line (black line) of the downside in the zone that is arranged in 6 pixels.
It (c) is that ordinate detects matrix that Figure 12 (b) reaches.The matrix in the left side of Figure 12 (b) detects the ordinate (black line) in the left side in the zone that is arranged in 6 pixels, the matrix of central authorities detects the ordinate (black line) of the central authorities in the zone that is arranged in 6 pixels, and the matrix on right side detects the ordinate (black line) on the right side in the zone that is arranged in 6 pixels.In addition, the matrix in the left side of Figure 12 (c) detects the ordinate (white line) in the left side in the zone that is arranged in 6 pixels, the matrix of central authorities detects the ordinate (white line) of the central authorities in the zone that is arranged in 6 pixels, and the matrix on right side detects the ordinate (white line) on the right side in the zone that is arranged in 6 pixels.
If use the line segment (line) in these matrixes detection input pictures, black white image handling part 42 just distributes the gray-scale value of black or white to the pixel that is positioned on the line segment.For example, be 256 gray scales (whites: gray-scale value " 0 ", black: gray-scale value " 255 "), just, the pixel that is positioned on the white line is distributed the gray-scale value " 0 " of white if set each pixel to being positioned at the gray-scale value " 255 " of the pixel distribution black on the black line.Then, black white image handling part 42, the picture signal 62 that 28 outputs so obtain as 6 chrominance signals.
This 6 chrominance signal 28 is presented on the 6 look color filters shown in Fig. 2 (b).As described in reference Fig. 2, in 6 look color filters of the present invention, because combination by RGB and YMC, can be in the black and white resolution that vertically obtains 2 pixel parts, combination by complementary colors can be in the black and white resolution that laterally obtains 3 pixel parts, therefore, by the picture signal 62 that demonstration utilizes linearize to handle to obtain, the black and white resolution that can produce above-mentioned vertical 2 times, horizontal 3 times is with the black white image of display of high resolution.
(2) when 3 pixel datas generate 6 chrominance signals
Generate under the situation of 6 chrominance signals in data only,, only detect horizontal line so only use the horizontal line shown in Figure 12 (a) to detect color filter owing to can not detect ordinate from 3 pixel parts (horizontal 3 pixels) of input picture.Thereafter processing distributes black gray-scale value with identical when 6 pixel datas generate 6 chrominance signals to the pixel that is positioned on the black line, generates and output image signal 62.In such cases, also can be and the black white image of display of high resolution in the black and white resolution of vertical generation 2 pixel parts of 6 look color filters.
Then, the colour element drafting processing that utilizes colour element handling part 43 to carry out is described.
(1) when 6 pixel datas generates 6 chrominance signals
Be illustrated in to Figure 13 pattern the processing when 6 pixel datas generate 6 chrominance signals.At first, shown in the left side of Figure 13, consider to generate the 6 chromatic number certificates corresponding with the zone 51 of one one 6 pixels of certain input picture (horizontal 3 pixels * indulge 2 pixels).
(a) the 1st method
The 2nd generation method of the 1st method and the 1st embodiment is similar.That is, the rgb signal owing to input is expressed as:
Sr＝(R1+R2+R3+R4+R5+R6)
Sg＝(G1+G2+G3+G4+G5+G6)
Sb＝(B1+B2+B3+B4+B5+B6)
So, obtain 6 chrominance signals by following formula.
Rout＝β{Sr-α(Yout+Mout)}
Gout＝β{Sg-α(Yout+Cout)}
Bout＝β{Sb-α(Mout+Cout)}
Cout＝θ(Sg?AND?Sb)
Mout＝θ(Sb?AND?Sr)
YLout＝θ(Sr?AND?Sg)
Herein, α, β and θ are the definite coefficients of design according to the strength component of all kinds of 6 look color filters.
In the method, owing to be not the resolution in length and breadth of display image, but the degree of depth of gray scale enlarges 6 times, so the ability when gray scale is represented ability greater than the RGB data of 1 pixel part of input, it is abundant that colour specification becomes.For example the view data at the R look of importing is under the situation of 8 (256 gray scales), and output data Rout can carry out the data representation of 256 * 6 gray scales.
(b) the 2nd method
In the 2nd method, as shown in figure 13, adopt matrix operation.As shown in figure 13, data (horizontal 3 pixels * vertical 2 pixels) for 6 pixel regions 51 of the assigned position of input image data, by being contained, each is arranged in going up or 9 pixel datas of the data of 3 pixel regions 52 (be downside at Figure 13) of downside (horizontal 3 pixels * indulge 3 pixels) of this zone, multiply by 3 * 3 matrix 55, remove and carry out normalization, the 6 chromatic number certificates that obtain exporting with " 6 ".Because the coefficient of the horizontal line at the center of matrix 55 be " 1.0 " and the coefficient of up and down horizontal line be " 0.5 ", therefore the 6 chromatic number certificates of also exporting based on the pixel generation of horizontal line up and down.That is, 6 chromatic number certificates of output, the ranking operation of the neighboring pixel by adopting matrix 55 determines that its result increases the resolution of above-below direction in fact.
Specifically be to obtain each output data by following formula.
Rout＝(0.5R11+0.5R12+0.5R13+1.0R21+1.0R22+1.0R23+0.5R31+0.5R32+0.5R33)/6
Gout＝(0.5G11+0.5G12+0.5G13+1.0G21+1.0G22+1.0G23+0.5G31+0.5G32+0.5G33)/6
Bout＝(0.5B11+0.5B12+0.5B13+1.0B21+1.0B22+1.0B23+0.5B31+0.5B32+0.5B33)/6
Cout＝Gout?AND?Bout
Mout＝Bout?AND?Rout
Yout＝Rout?AND?Gout
By above method, can be from 6 pixels of RGB input image data, the pixel data of 6 looks of R, the G of the suitable 6 look color filters of the present invention of generation, B, YL, M, C.
(2) when 3 pixel datas generate 6 chrominance signals
Be illustrated in to Figure 14 pattern the processing when 3 pixel datas generate 6 chrominance signals.Now, shown in the left side of Figure 14, consider to generate 6 corresponding chromatic number certificates of the zone that constitutes with one one 3 pixels 57 by certain input picture.
(a) the 1st method
The 2nd generation method of the 1st method and the 1st embodiment is similar.That is, the rgb signal owing to input is expressed as:
Sr＝(R1+R2+R3)
Sg＝(G1+G2+G3)
Sb＝(B1+B2+B3)
So, obtain 6 chrominance signals by following formula.
Rout＝β{Sr-α(Yout+Mout)}
Gout＝β{Sg-α(Yout+Cout)}
Bout＝β{Sb-α(Mout+Cout)}
Cout＝θ(Sg?AND?Sb)
Mout＝θ(Sb?AND?Sr)
YLout＝θ(Sr?AND?Sg)
Herein, α, β and θ are the definite coefficients of design according to the strength component of all kinds of 6 look color filters.
In the method, owing to be not the resolution in length and breadth of display image, but the degree of depth of gray scale enlarges 3 times, so the ability of gray scale expressive ability during greater than the RGB data of 1 pixel part of input, color table is now abundant.For example the view data at the R look of importing is under the situation of 8 (256 gray scales), and output data Rout can carry out the data performance of 256 * 3 gray scales.
(b) the 2nd method
In the 2nd method, as shown in figure 14, adopt matrix operation.As shown in figure 14,3 pixel datas (horizontal 3 pixels) for the assigned position of input image data, by each is contained this zone about the data (horizontal 5 pixels) in zone 57 of 5 pixels of 1 pixel, multiply by 1 * 5 matrix 58, remove with " 2.5 ", carry out normalization, the 6 chromatic number certificates that obtain exporting.Because the coefficient of the central authorities of matrix 58 is " 1.0 ", the coefficient of the pixel about it is " 0.5 ", and then its outside about the coefficient of pixel be " 0.25 ", the ranking operation of the pixel value about therefore passing through, generate 6 chromatic number certificates of output, its result increases the resolution of left and right directions in fact.
Specifically be to obtain each output data by following formula.
Rout＝(0.25R11+0.5R12+1.0R13+0.5R14+0.25R15)/2.5
Gout＝(0.25G11+0.5G12+1.0G13+0.5G14+0.25G15)/2.5
Bout＝(0.25B11+0.5B12+1.0B13+0.5B14+0.25B15)/2.5
Cout＝Gout?AND?Bout
Mout＝Bout?AND?Rout
Yout＝Rout?AND?Gout
By above method, can be from 3 pixels of RGB input image data, the pixel data of 6 looks of R, the G of the suitable 6 look color filters of the present invention of generation, B, YL, M, C.
[display panels]
Below, the display panels example that adopts filter substrate of the present invention is described.This example is to adopt the filter substrate of above-mentioned 6 look color filters to be used for the example of the display panels 14 of Transflective, and Figure 15 is the sectional view of liquid crystal display part 18.
In Figure 15, display panels 14 by encapsulant 103 fit the substrate 101 that constitutes by glass or plastics etc. and substrate 102 and within it portion enclose liquid crystal 104 and constitute.In addition, configuration phase difference plate 105 and polarization plates 106 successively on the outside of substrate 102, configuration phase difference plate 107 and polarization plates 108 successively on the outside of substrate 101.In addition, below polarization plates 108, be configured in the backlight 109 that carries out sending when transmission-type shows illumination light.
In addition, as required, on the border of color filter of all kinds, form black matrix.Then, on color filter CF, form the transparency electrode 17 that constitutes by ITO transparent conductive bodies such as (indium tin oxides).This transparency electrode 17 in the present embodiment, forms a plurality of striateds arranged side by side.In addition, this transparency electrode 17 is extended to being formed on the vertical direction of transparency electrode 121 on the substrate 102 with same striated, is included in the component part formation pixel region of the display panels 14 in the intersection region of transparency electrode 17 and transparency electrode 121.
In addition, on the inner face of substrate 102, form transparency electrode 121, with the substrate 101 of subtend on transparency electrode 17 mode of intersecting constitute.In addition, on the transparency electrode on the substrate 101 17, and substrate 102 on transparency electrode 121 on, form alignment films etc. as required.
On this display panels 14, under the situation of carrying out the reflection-type demonstration, be incident on the outer light on the zone that is formed with metallic reflective coating, advance along path R shown in Figure 15, thereby reflected visuognosis by the observer by metallic reflective coating.In addition, carrying out under the situation that transmission-type shows, be incident on regional transmission, shown in the T of path, advancing from the illumination light of backlight 109 outgoing, thereby by observer's visuognosis.
In addition, above-mentioned display panels is only used an only example of 6 look color filters of the present invention, and 6 look color filters of the present invention also can be used in the display panels of other various formations.
[electronic equipment]
Below, explanation can be used the example of the electronic equipment of display panels of the present invention with reference to Figure 16.
At first, the example of using display panels of the present invention at the display part of PC (so-called notebook computer) that can the carrying type is described.Figure 16 (a) is the stereographic map of the formation of this PC of expression.As shown in the drawing, PC 41 has body 412 that comprises keyboard 411 and the display part 413 of using display panels of the present invention.
And then, the example of using display panels of the present invention at the display part of portable phone is described.Figure 16 (b) is the stereographic map of the formation of this portable phone of expression.As shown in the drawing, portable phone 42 except that a plurality of operation push-buttons 421, has the display part 424 of receiving mouth 422, mouth piece 423, application display panels of the present invention.
In addition, as the electronic equipment that can use display panels of the present invention, except that the portable phone shown in the PC shown in Figure 16 (a) and Figure 16 (b), also can enumerate LCD TV, the type of finding a view supervision direct viewing type (tape) video recorder, vehicle navigation apparatus, pager, electronic memo, electronic calculator, word processor, workstation, videophone, POS terminal, number (static state) video camera etc.
[variation]
In addition, have the substrate of above-mentioned reflection horizon and color filter and liquid-crystal apparatus etc., be not confined to above-mentioned example certainly, in the scope that does not break away from main idea of the present invention, can carry out numerous variations.
In the embodiment of above explanation, show display panels for example, but as electro-optical device of the present invention, equally also can be used in electrophoretic apparatus such as Electronic Paper and EL (electroluminescence) device etc.
Claims (13)
1. color filter is characterized in that: the zone that constitutes 1 pixel has red color filter zone, green color filter zone, blue color filter zone, yellow color filter zone, magenta color filter zone and blue-green color filter regions.
2. color filter as claimed in claim 1 is characterized in that:
Described red color filter zone is adjacent mutually with described blue-green color filter regions, and on a direction alignment arrangements;
Described green color filter zone is adjacent mutually with described magenta color filter zone, and on a described direction alignment arrangements;
Described blue color filter zone is adjacent mutually with described yellow color filter zone, and on a described direction alignment arrangements.
3. color filter as claimed in claim 2 is characterized in that:
Described red color filter zone, described green color filter zone and described blue color filter zone are configured to delegation and constitute the RGB color filter regions on the direction vertical with a described direction;
Described yellow color filter zone, described magenta color filter zone and described blue-green color filter regions are configured to delegation and constitute the YMC color filter regions on the direction vertical with a described direction;
Described RGB color filter regions and described YMC color filter regions are adjacent to configuration.
4. color image display device is characterized in that possessing:
Display panel, it has color filter, and wherein, the zone that constitutes 1 pixel has red color filter zone, green color filter zone, blue color filter zone, yellow color filter zone, magenta color filter zone and blue-green color filter regions;
The look operational part, it generates 6 chrominance signals that comprise danger signal, green, blue signal, yellow signal, magenta signal and blue-green signal based on the rgb signal from the outside input; With
Control part, it controls the demonstration of the color filter regions of all kinds of described display panel based on described 6 chrominance signals, shows the image corresponding with described rgb signal on described display panel.
5. color image display device as claimed in claim 4 is characterized in that, described look operational part possesses:
Generate the unit of described yellow signal by the logic and operation of contained R signal of described rgb signal and G signal;
Generate the unit of described magenta signal by the logic and operation of contained R signal of described rgb signal and B signal; With
Generate the unit of described blue-green signal by the logic and operation of contained G signal of described rgb signal and B signal.
6. color image display device as claimed in claim 5 is characterized in that: described look operational part is exported R signal contained in the described rgb signal, G signal and B signal respectively as the danger signal in described 6 chrominance signals, green and blue signal.
7. color image display device as claimed in claim 5 is characterized in that, described look operational part possesses:
From described R signal ratio in accordance with regulations deduct described yellow signal and described magenta signal and and generate the unit of described danger signal;
From described G signal ratio in accordance with regulations deduct described yellow signal and described blue-green signal and and generate the unit of described green; With
That deduct described magenta signal and described blue-green signal from described B signal ratio in accordance with regulations and and generate the unit of described blue signal.
8. color image display device as claimed in claim 4 is characterized in that, described look operational part possesses:
Judge that described rgb signal is the black white image or the detection unit of coloured image;
Judging that described rgb signal is to detect line segment from described rgb signal under the situation of black white image, generates the black white image handling part of 6 chrominance signals that show the line segment that detects; With
Judging that described rgb signal is to generate Color Image Processing portion with corresponding 6 chrominance signals of described cromogram from described rgb signal under the situation of coloured image.
9. color image display device as claimed in claim 8 is characterized in that, described detection unit possesses:
Described rgb signal is transformed into the unit of YUV signal; With
U signal in described YUV signal and V signal judge that this rgb signal is a black white image during less than setting, during more than or equal to setting, judge that this rgb signal is the unit of coloured image at described U signal and V signal.
10. color image display device as claimed in claim 8 or 9, it is characterized in that: described black white image handling part utilizes line segment to detect matrix and detects described line segment.
11. as each described color image display device in the claim 8～10, it is characterized in that: described Color Image Processing portion, the ranking operation by to the pixel of the stated number that constitutes described rgb signal generates described 6 chrominance signals.
12. color image display device as claimed in claim 11 is characterized in that: described Color Image Processing portion, carry out matrix operation by pixel to described stated number, generate described 6 chrominance signals.
13. an electronic equipment is characterized in that: have as each described color image display device in the claim 4～12 as image displaying part.
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| JP195732/2004 | 2004-07-01 | ||
| JP2004195732A JP2005062833A (en) | 2003-07-29 | 2004-07-01 | Color filter, color image display device, and electronic equipment |
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| CN100374921C CN100374921C (en) | 2008-03-12 |
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| KR (1) | KR100685596B1 (en) |
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| TW200604669A (en) | 2006-02-01 |
| KR20060048727A (en) | 2006-05-18 |
| KR100685596B1 (en) | 2007-02-22 |
| CN100374921C (en) | 2008-03-12 |
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