CN101354879B - Display apparatus, display panel and method for correcting image - Google Patents

Display apparatus, display panel and method for correcting image Download PDF

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Publication number
CN101354879B
CN101354879B CN2007101398637A CN200710139863A CN101354879B CN 101354879 B CN101354879 B CN 101354879B CN 2007101398637 A CN2007101398637 A CN 2007101398637A CN 200710139863 A CN200710139863 A CN 200710139863A CN 101354879 B CN101354879 B CN 101354879B
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image
image block
module
pixel data
display panel
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CN101354879A (en
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詹健弘
陈傅丞
陈政一
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Chi Mei Optoelectronics Corp
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Chi Mei Optoelectronics Corp
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Abstract

The invention discloses a display device, a display panel and an image correction method. The display device comprises a backlight module and a display panel which comprises a pixel array, an image size setting module, an image correction module and a data wire driving circuit. The display panel comprises an image size setting module and an image correction module. The image correction method comprises the following steps of setting the size of an image block; moving the image block at least one pixel in turn to scan an image frame to obtain a corresponding correction parameter of each image block of the image frame, so as to modify a plurality of original pixels of each image block to a plurality of correction pixel data. The whole image frame contrast can be improved.

Description

Display device, display panel and method for correcting image thereof
Technical field
The present invention system is about a kind of display device, display panel and method for correcting image thereof.
Background technology
Along with showing development of science and technology, various method for correcting image arise at the historic moment also that display frame better contrasts to provide, more bright-coloured tone or sharper keen border etc.
In general, existing method for correcting image can produce the corresponding correction image frame of characteristic therewith according to the characteristic of each image frame (image frame), and then image frame is revised in output.
For instance, if when whole image frame is comparatively bright, then with the gain that is suitable for high gray with the partial reinforment of whole image frame higher gray scale to export as revising image frame.Otherwise when comparatively dim as if whole image frame, the partial reinforment of then with the gain that is suitable for low GTG image frame being hanged down GTG is to export as the correction image frame.
Yet; In general, only be that whole bright perhaps integral body is dim owing to image frame is single, for example; If image frame has light and dim part; And light is during more than dim part, and existing method for correcting image is only strengthened the higher gray scale (light) of image frame to export as revising image frame with the gain of high gray, and low GTG (dim part) contrast that will cause revising image frame can't be by effective enhancing.
Therefore, how a kind of display device, display panel and method for correcting image that can promote the contrast of overall image picture frame is provided, real one of the current important topic that belongs to.
Summary of the invention
The objective of the invention is a kind of display device, display panel and the method for correcting image thereof that can promote the contrast of overall image picture frame that provides in order to solve the problems referred to above that prior art exists.
For reaching above-mentioned purpose, comprise the following step according to a kind of method for correcting image of the present invention: at first, set the size of an image block; Then, the distance of at least one pixel of movable image block to be scanning an image frame one by one, and obtains the corresponding corrected parameter of each image block of image frame, is modified to a plurality of correction pixel datas with a plurality of raw pixel data with each image block.
In addition, for reaching above-mentioned purpose, comprise image size according to a kind of display panel of the present invention and set a module and an image correcting module.The image size is set module in order to set the image area block size of scanning one image frame; The image correcting module moves distance and the scan-image picture frame of at least one pixel one by one according to the image block; And obtain the corresponding corrected parameter of each image block of image frame, be modified to a plurality of correction pixel datas with a plurality of raw pixel data with each image block.
Moreover, for reaching above-mentioned purpose, comprise a display panel and a module backlight according to a kind of display device of the present invention.Display panel is in order to show an image frame, and wherein display panel has a pel array, image size is set module, an image correcting module and a data line drive circuit.The image size is set module in order to set an image area block size of scan-image picture frame.The image correcting module is the distance of at least one pixel of movable image block one by one; With the scan-image picture frame, and the corresponding corrected parameter of each image block that obtains image frame is modified to a plurality of correction pixel datas with a plurality of raw pixel data with each image block.Data line drive circuit system receives said correction pixel data and comes the driving pixels array to produce corresponding drive signal.Module backlight is in order to provide display panel required backlight.
Hold the above; Because of according to display device of the present invention, display panel and method for correcting image being utilizes the image block that sets that image frame is made a plurality of image blocks that formula scanning in proper order obtains image frame; And according to the pairing corrected parameter of each image block; Respectively the said raw pixel data of each image block is modified to said correction pixel data, in other words, by image block P-SCAN image frame; Can consider the pixel data of each pixel surrounding pixel in the image frame, and produce the said pixel data of respectively revising of each image block.So, with existing method for correcting image only with the specific part hardening constituent of image frame relatively under, display device of the present invention, display panel and method for correcting image can promote the contrast of overall image picture frame.
Description of drawings
Characteristic of the present invention, performance and effect are further described by following embodiment and accompanying drawing thereof.
Fig. 1 is the block scheme of the display panel of a demonstration the present invention first preferred embodiment;
Fig. 2 A～2E is the schematic flow sheet of the scan mode of the display panel of demonstration the present invention first preferred embodiment;
Fig. 3 is the block scheme of the display panel of the another kind of the present invention of demonstration first preferred embodiment;
Fig. 4 shows the block scheme of the display panel of the present invention's first preferred embodiment for another;
Fig. 5 shows the block scheme of the display panel of the present invention's first preferred embodiment for another;
Fig. 6 to Fig. 9 is one group of block scheme that shows the display panel of the present invention's second preferred embodiment; And
Figure 10 is the schematic flow sheet of the method for correcting image of demonstration preferred embodiment of the present invention.
The main element symbol description is following among the figure:
1,2 display panels
11,21 images size is set module
12,22 image correcting module
13,23 analysis module
14,24 computing modules
15,25 store module
16,26 select module
17,27 first conversion modules
17 ', 27 ' the second conversion module
18,28 postpone module
29 interpolation modules
29 ' sampling module
AB 1i～AB JiRevise blue GTG value
AG 1i～AG JiRevise green GTG value
AP 11～AP 1nRevise pixel data
AP 21～AP 2nRevise pixel data
AP 31～AP 3nRevise pixel data
AP J1～AP JnRevise pixel data
AR 1i～AR JiRevise red GTG value
AY 1i～AY JiRevise the intensity gray scale value
AIY 1i～AIY JiInsert the intensity gray scale value in revising
B 1～B 4jThe image block
B 1i～B JiBlue GTG value
B xThe image block
C 0Gain trace
C 1～C jGain trace
Cb 1i～Cb JiColourity GTG value
Cr 1i～Cr JiColourity GTG value
D 1～D jThe intensity gray scale value distributes
E 0The border gain parameter
E 1～E jThe border gain parameter
F 0Image frame
G 1i～G JiGreen GTG value
IY 1i～IY JiThe interior intensity gray scale value of inserting
L 1～L jThe deck watch
P 11～P 1nRaw pixel data
P 21～P 2nRaw pixel data
P 31～P 3nRaw pixel data
P J1～P JnRaw pixel data
R 1i～R JiRed GTG value
S 1～S jThe border characteristic
The step of S100～S200 method for correcting image
Y 1i～Y JiThe intensity gray scale value
Embodiment
Hereinafter with reference to correlative type, display unit, display floater and method for correcting image according to preferred embodiment of the present invention are described.
Please with reference to shown in Figure 1, this is the display panel 1 according to the present invention's first preferred embodiment, and it comprises image size and sets a module 11 and an image correcting module 12.
The image size is set module 11 in order to set scanning one image frame (image frame) F 0An image block B xSize, and image correcting module 12 is according to setting image block B xArea P-SCAN image frame F 0, to get image frame F 0A plurality of image blocks (imageblock).Wherein the image block has a plurality of raw pixel data (pixel data), that is, movable image block B one by one xThe distance of at least one pixel is with complete scan image frame F 0Wherein, image block B xCan level or vertical direction move with scan-image picture frame F 0, below take the example that a horizontal direction moves and explain.
At first, please be simultaneously with reference to shown in Fig. 2 A～2B, image block B xBy image frame F 0The upper left corner distance that begins to move a plurality of pixels with horizontal direction come scan-image picture frame F 0A part, and draw image block B 1
Then, please be simultaneously with reference to shown in Fig. 2 B～2C, image block B xThe distance that moves a plurality of pixels with horizontal direction again is with scan-image picture frame F 0A part, and draw image block B 2
Then, please be simultaneously with reference to shown in Fig. 2 C～2D, image block B xThe distance that moves a plurality of pixels with horizontal direction is more again come scan-image picture frame F 0A part, and draw image block B 3The samely analogize, please with reference to shown in Fig. 2 E, image block B xContinue to come scan-image picture frame F 0A part, and draw image block B j
Again please with reference to shown in Figure 1, if image block B XThe length and width of area respectively be 50 pixels (50pixels * 50pixels), and image frame F 0The length and width of area be respectively 1024 pixels and 768 pixels (1024pixels * 768pixels); Then but P-SCAN horizontal direction 974 times and vertical direction are 718 times, and scanning all can obtain a plurality of raw pixel data (50pixels * 50pixels) draws a plurality of image block B one by one 1, B 2, B 3B jAnd image block B 1, B 2, B 3B jHave a plurality of raw pixel data P respectively 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnCertainly, the big I of image block changes according to actual demand, for example 100pixels * 100pixels or 100pixels * 50pixels.And each raw pixel data P 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnNumber then according to image block B xArea size and decide.For example, image block B xThe area size be 50 * 50 o'clock, each raw pixel data P then 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnNumber be all 50 * 50.Image correcting module 12 is according to image frame F 0Each image block B 1, B 2, B 3B jA corresponding corrected parameter is with respectively with a plurality of raw pixel data P of each image block 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnBe modified to a plurality of correction pixel data AP 11～AP 1n, AP 21～AP 2n, AP 31～AP 3nAP J1～AP JnIn the present embodiment, corrected parameter is with a plurality of gain trace C 1, C 2, C 3C jFor example with each image block B 1, B 2, B 3B jCorresponding, gain trace C in the present embodiment 1, C 2, C 3C jBe meant gamma curve (gammacurve).
Hold image frame F 0Each image block B 1, B 2, B 3B jFoundation is pairing gain trace C separately 1, C 2, C 3C jTo produce each image block B 1, B 2, B 3B jCorrection pixel data AP 11～AP 1n, AP 21～AP 2n, AP 31～AP 3nAP J1～AP Jn, come to promote respectively each image block B 1, B 2, B 3B jContrast.So, with existing method for correcting image only with the specific part hardening constituent of image frame relatively under, display panel 1 of the present invention can promote overall image picture frame F 0Contrast.
In addition, please with reference to shown in Figure 3, display panel 1 also comprises an analysis module 13 and a computing module 14.
Analysis module 13 is analyzed each image block B respectively 1, B 2, B 3B jSaid each raw pixel data P 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnTo get each image block B 1, B 2, B 3B jAn intensity gray scale value (Histogram) D that distributes 1, D 2, D 3D jWherein, intensity gray scale value distribution D 1, D 2, D 3D jRepresent different intensity gray scale values (gray level) the quantity (count) of corresponding raw pixel data, and can reflect each image block B 1, B 2, B 3B jBecome clear or dim state.In the present embodiment, each intensity gray scale value distribution D 1, D 2, D 3D jCan information such as intensity gray scale mean value, intensity gray scale peak value or intensity gray scale root-mean-square value be provided correspondence.Certainly, analysis module 13 is analyzed each image block B respectively 1, B 2, B 3B jSaid each raw pixel data P 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnTo analyze each image block B 1, B 2, B 3B jIntensity gray scale mean value, intensity gray scale peak value or intensity gray scale root-mean-square value.
Computing module 14 is according to each image block B 1, B 2, B 3B jIntensity gray scale value distribution D 1, D 2, D 3D jTo calculate and each image block B 1, B 2, B 3B jCorresponding gain trace C 1, C 2, C 3C jFor example, if intensity gray scale value distribution D 1, D 2, D 3Mainly concentrate on high gray, and intensity gray scale value distribution D jMainly concentrate on when hanging down GTG, computing module 14 can corresponding calculate and be suitable for the gain trace C that high gray is strengthened 1, C 2, C 3, and be suitable for the gain trace C that low GTG is strengthened jThen, image correcting module 12 is again according to gain trace C 1, C 2, C 3With with pixel data P 11～P 1n, P 21～P 2n, P 31～P 3nBe modified to and revise pixel data AP 11～AP 1n, AP 21～AP 2n, AP 31～AP 3nTo promote image block B 1, B 2, B 3High gray contrast, and according to gain trace C jWith with pixel data P J1～P JnBe modified to and revise pixel data AP J1～AP JnTo promote image block B jThe contrast of low GTG.In other words, display panel 1 can be in response to each image block B 1, B 2, B 3B jIntensity gray scale value distribution D 1, D 2, D 3D jAnd the corresponding gain trace C of generation 1, C 2, C 3C jTo promote overall image picture frame F 0Contrast.
In addition, please with reference to shown in Figure 4, display panel 1 also can more comprise a storage module 15 and and select module 16 to replace computing module 14 (as shown in Figure 2).Wherein, store module 15 and can store a plurality of gain trace C 0, and selection module 16 is according to each image block B 1, B 2, B 3B jIntensity gray scale value distribution D 1, D 2, D 3D jTo store the gain trace C of module 15 certainly 0In select and each image block B 1, B 2, B 3B jCorresponding gain trace C 1, C 2, C 3C j
In order to make the present invention clearer, below lift an instance so that display panel of the present invention to be described.
In general, each raw pixel data has three color GTG values at least, for example is red GTG value, green GTG value and blue GTG value.Below with R 1i, R 2i, R 3iR JiRepresent said raw pixel data P respectively 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnRed GTG value; With G 1i, G 2i, G 3iG JiRepresent said raw pixel data P respectively 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnGreen GTG value; With B 1i, B 2i, B 3iB JiRepresent said raw pixel data P respectively 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnBlue GTG value.
Please with reference to shown in Figure 5, display panel 1 also comprises one first conversion module 17, one second and changes a module 17 ' and a delay module 18.
The first conversion module 17 is set module 11 with the image size and is electrically connected, with red GTG value R 1i～R Ji, green GTG value G 1i～G JiAnd blue GTG value B 1i～B JiConvert color space into intensity gray scale value; The color space that wherein has the intensity gray scale value can refer to that the color space of brightness (Y), colourity (Cr) and colourity (Cb) perhaps can refer to the color space of brightness (Y), colourity (U) and colourity (V), also can refer to color space of brightness (Y), colourity (Pb) and colourity (Pr) or the like.At this, the first conversion module 17 is with red GTG value R 1i～R 4i, green GTG value G 1i～G JiAnd blue GTG value B 1i～B JiConvert intensity gray scale value Y into 1i～Y Ji, colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiFor example is explained.
The analysis module 13 and the first conversion module 17 electrically connect with acquisition intensity gray scale value Y 1i～Y Ji, and analyze each image block B respectively 1～B jIntensity gray scale value Y 1i～Y JiTo get each image block B 1～B jIntensity gray scale value distribution D 1～D j
Computing module 14 electrically connects with analysis module 13, and according to each image block B 1～B jIntensity gray scale value distribution D 1～D jTo calculate gain trace C 1～C j, and export corresponding gain trace C 1～C jDeck watch L 1～L j(Look Up Table is LUT) to image correcting module 12.Wherein, deck watch L 1～L jSystem is according to gain trace C 1～C jIntensity gray scale value Y is described respectively 1i～Y JiWith correction intensity gray scale value AY 1i～AY JiCorresponding relation.
Image correcting module 12 electrically connects with comparison intensity gray scale value Y with the first conversion module 17 and computing module 14 respectively 1i～Y JiAnd deck watch L 1～L jAnd must revise intensity gray scale value AY 1i～AY Ji, and intensity gray scale value AY is revised in output 1i～AY JiTo the second conversion module 17 '.
Postpone module 18 and 17 electric connections of the first conversion module with colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiPostpone to export to the second conversion module 17 ', in order to do making colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiWith correction intensity gray scale value AY 1i～AY JiSynchronously.
The second conversion module 17 ' electrically connects will revise intensity gray scale value AY with delay module 18 and image correcting module 12 respectively 1i～AY Ji, colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiConvert into and revise red GTG value AR 1i～AR Ji, revise green GTG value AG 1i～AG JiAnd the blue GTG value AB of correction 1i～AB Ji, and the follow-up data line drive circuit (not shown) that exports to comes the display frame of driving pixels array (not shown) to produce drive signal.
Hold; Because of according to display panel of the present invention being utilizes the image block set that image frame is made a plurality of image blocks that formula scanning in proper order obtains image frame, and according to the pairing corrected parameter of each image block respectively the said raw pixel data of each image block is modified to said correction pixel data.In other words, can consider the pixel data of each pixel surrounding pixel in the image frame by image block P-SCAN image frame, and produce the said correction pixel data of each image block.So, with existing method for correcting image only with the specific part hardening constituent of image frame relatively under, display device of the present invention, display panel and method for correcting image can promote the contrast of overall image picture frame.
In addition, please with reference to shown in Figure 6, comprise image size according to the display panel 2 of the present invention's second preferred embodiment and set a module 21 and an image correcting module 22.
The image size is set module 21 in order to set scanning one image frame F 0An image block B xSize, and image correcting module 22 is according to image block B xArea P-SCAN image frame F 0, to get image frame F 0A plurality of image blocks, wherein the image block has a plurality of raw pixel data, that is, movable image block B one by one xThe distance of at least one pixel is with complete scan image frame F 0Wherein above-mentioned scan mode details in the present invention's first preferred embodiment display panel (shown in Fig. 2 A～2E), does not give unnecessary details in this appearance.
Image correcting module 22 is according to image frame F 0Each image block B 1, B 2, B 3B jA corresponding corrected parameter is with respectively with each image block B 1, B 2, B 3B jA plurality of raw pixel data P 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnBe modified to a plurality of correction pixel data AP 11～AP 1n, AP 21～AP 2n, AP 31～AP 3nAP J1～AP JnWherein, corrected parameter is with a plurality of border gain parameter E 1, E 2, E 3E jFor example with each image block B 1, B 2, B 3B jCorresponding.
Hold image frame F 0Each image block B 1, B 2, B 3B jFoundation is pairing border gain parameter E separately 1, E 2, E 3E jTo produce each image block B 1, B 2, B 3B jCorrection pixel data AP 11～AP 1n, AP 21～AP 2n, AP 31～AP 3nAP J1～AP JnPromote each image block B respectively 1, B 2, B 3B jThe border sharpness, and then can promote overall image picture frame F 0The border sharpness.
In addition, please with reference to shown in Figure 7, display panel 2 also comprises an analysis module 23 and a computing module 24.
Analysis module 23 is analyzed each image block B respectively 1, B 2, B 3B jSaid raw pixel data P 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnTo get each image block B 1, B 2, B 3B jA border characteristic S 1, S 2, S 3S jWherein, border characteristic S 1, S 2, S 3S jThe type on border, the width on border or the amplitude on border or the like can be contained in system.
Computing module 24 is according to each image block B 1, B 2, B 3B jBorder characteristic S 1, S 2, S 3S jTo calculate and each image block B 1, B 2, B 3B jCorresponding border gain parameter E 1, E 2, E 3E jThen, image correcting module 22 is again according to border gain parameter E 1, E 2, E 3E jWith with pixel data P 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnBe modified to and revise pixel data AP 11～AP 1n, AP 21～AP 2n, AP 31～AP 3nAP J1～AP JnIn other words, display panel 2 can be in response to each image block B 1, B 2, B 3B jBorder characteristic E 1, E 2, E 3E jAnd the corresponding border gain parameter E of generation 1, E 2, E 3E jTo promote overall image picture frame F 0The border sharpness.
In addition, please with reference to shown in Figure 8, display panel 2 also comprises a storage module 25 and and selects module 26 to replace computing module 24, wherein, stores module 25 and can store a plurality of border gain parameter E 0, and selection module 26 is according to each image block B 1, B 2, B 3B jBorder characteristic S 1, S 2, S 3S jTo store the border gain parameter E of module 25 certainly 0In select and each image block B 1, B 2, B 3B jCorresponding border gain parameter E 1, E 2, E 3E j
In order to make the present invention clearer, below lift a real example so that display panel of the present invention to be described.
In general, each raw pixel data has three color GTG values at least, for example is red GTG value, green GTG value and blue GTG value.Below with R 1i, R 2i, R 3iR JiRepresent said raw pixel data P respectively 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnRed GTG value; With G 1i, G 2i, G 3iG JiRepresent said raw pixel data P respectively 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnGreen GTG value; With B 1i, B 2i, B 3iB JiRepresent said raw pixel data P respectively 11～P 1n, P 21～P 2n, P 31～P 3nP J1～P JnBlue GTG value.
Please with reference to shown in Figure 9, display panel 2 also comprises one first conversion module 27, one second and changes module 27 ', a delay module 28, one an interior module 29 and the sampling module 29 ' inserted.
The first conversion module 27 is to set module 21 with image size to electrically connect with red GTG value R 1i～R Ji, green GTG value G 1i～G JiAnd blue GTG value B 1i～B JiConvert color space into intensity gray scale value; The color space that wherein has the intensity gray scale value can refer to the color space of brightness (Y), colourity (Cr) and colourity (Cb); The color space that perhaps can refer to brightness (Y), colourity (U) and colourity (V) also can refer to color space of brightness (Y), colourity (Pb) and colourity (Pr) or the like.At this, the first conversion module 27 is with red GTG value R 1i～R Ji, green GTG value G 1i～G JiAnd blue GTG value B 1i～B JiConvert intensity gray scale value Y into 1i～Y Ji, colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiFor example is explained.
The interior module 29 and first of inserting is changed module 27 electric connections with acquisition intensity gray scale value Y 1i～Y Ji, wherein interior slotting module 29 lies in each intensity gray scale value Y 1i～Y JiIn insert respectively and insert intensity gray scale value IY in a plurality of 1i～IY JiTo increase each image block B 1～B jThe sampling number.
Analysis module 23 electrically connects with acquisition intensity gray scale value Y with interior slotting module 29 1i～Y JiAnd the interior intensity gray scale value IY that inserts 1i～IY Ji, and analyze each image block B respectively 1～B jIntensity gray scale value Y 1i～Y JiAnd the interior intensity gray scale value IY that inserts 1i～IY JiTo get each image block B 1～B jBorder characteristic S 1～S jAt this moment, because border characteristic S 1～S jSystem is by the more sampling number of analysis module 23 foundations (intensity gray scale value Y 1i～Y JiAnd the interior intensity gray scale value IY that inserts 1i～IY Ji) analyze and get, therefore, resulting border characteristic S 1～S jMore can reflect each image block B 1～B jEdge details.
Computing module 24 and analysis module 23 electrically connect with according to each image block B 1～B jBorder characteristic S 1～S jTo calculate border gain parametric line E 1～E j, and output boundary gain parameter curve E 1～E jTo image correcting module 22.
Image correcting module 22 is according to border gain parametric line E 1～E jWith respectively with each image block B 1～B jIntensity gray scale value Y 1i～Y JiAnd the interior intensity gray scale value IY that inserts 1i～IY JiBe modified to and revise intensity gray scale value AY 1i～AY JiAnd slotting intensity gray scale value AIY in revising 1i～AIY Ji
Sampling module 29 ' electrically connects to revise intensity gray scale value AY certainly with image correcting module 22 1i～AY JiAnd slotting intensity gray scale value AIY in revising 1i～AIY JiIn the correction intensity gray scale value AY ' that takes a sample out 1i～AY ' Ji, and intensity gray scale value AY ' is revised in output 1i～AY ' JiTo the second conversion module 27 '.
Postpone module 28 and 27 electric connections of the first conversion module with colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiDelay is to export the second conversion module 27 ' in order to do making colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiWith correction intensity gray scale value AY ' 1i～AY ' JiSynchronously.
The second conversion module 27 ' electrically connects with delay module 28 and sampling module 29 ' respectively, will revise intensity gray scale value AY ' 1i～AY ' Ji, colourity GTG value Cr 1i～Cr JiAnd colourity GTG value Cb 1i～Cb JiConvert into and revise red GTG value AR 1i～AR Ji, revise green GTG value AG 1i～AG JiAnd the blue GTG value AB of correction 1i～AB Ji, and export the data line drive circuit (not shown) to and come the display frame of driving pixels array (not shown) to produce drive signal.
Hold; Because of according to display panel of the present invention being utilizes the image area block size set that image frame is made a plurality of image blocks that formula scanning in proper order obtains image frame, and according to the pairing border gain parametric line of each image block respectively the said raw pixel data of each image block is modified to said correction pixel data.In other words, can consider the pixel data of each pixel surrounding pixel in the image frame by image block P-SCAN image frame, and produce the said correction pixel data of each image block, and then can promote the border sharpness of overall image picture frame.
In addition, according to the display device of preferred embodiment of the present invention, it can be an iconoscope display device, an electric plasma display device, a field emission display device, a liquid crystal indicator or an organic LED display device etc.
Wherein, display device comprises a display panel and a module backlight.Display panel is in order to show an image frame, and wherein display panel has a pel array, image size is set module, an image correcting module and a data line drive circuit.The image size is set module in order to set an image area block size of scan-image picture frame.The image correcting module is the distance of at least one pixel of movable image block one by one; With the scan-image picture frame, and the corresponding corrected parameter of each image block that obtains image frame is modified to a plurality of correction pixel datas with a plurality of raw pixel data with each image block.Data line drive circuit receives said correction pixel data and comes the driving pixels array to produce corresponding drive signal.Module backlight is in order to provide display panel required backlight.
The display device of preferred embodiment of the present invention details in the display panel 1,2 (extremely shown in Figure 9 like Fig. 1) of first and second preferred embodiment of the present invention, does not give unnecessary details in this appearance.
In addition, in the present embodiment, display device can also comprise a module backlight, and it is to cooperate with display panel, and display panel has more a data line drive circuit and pel array.Wherein, the image correcting module is exported said correction pixel data to data line drive circuit and is come the display frame of driving pixels array (not shown) to produce drive signal, and module backlight provides pel array required backlight.
At last, please with reference to shown in Figure 10, comprise step S100～S200 at least according to the method for correcting image of preferred embodiment of the present invention.
Step S100 sets the size of an image block; And
Step S200 is the distance of at least one pixel of movable image block one by one; To scan an image frame; And obtain the corresponding corrected parameter of each image block of said image frame, be modified to a plurality of correction pixel datas with a plurality of raw pixel data with each image block.
And the method for correcting image of present embodiment (, repeats no more at this to detailed description shown in Figure 9 like Fig. 1 in the display panel 1,2 of above-mentioned first and second preferred embodiment.
In sum; Because of according to display device of the present invention, display panel and method for correcting image being utilizes the image block that sets that image frame is made a plurality of image blocks that formula scanning in proper order obtains image frame; And according to the pairing corrected parameter of each image block respectively the said raw pixel data of each image block is modified to said correction pixel data; In other words, by image block P-SCAN image frame, can consider the pixel data of each pixel surrounding pixel in the image frame; And produce the said correction pixel data of each image block, and then can promote contrast of overall image picture frame or border sharpness.
The above is merely illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the scope of claims of the present invention its equivalent modifications of carrying out or change.

Claims (9)

1. a method for correcting image is characterized in that, comprises:
Set the size of an image block; And,
Move the distance of at least one pixel of said image block one by one; With scan one comprise a plurality of image blocks image frame; And obtain the corresponding corrected parameter of each image block, be modified to a plurality of correction pixel datas with a plurality of raw pixel data with each image block.
2. method for correcting image as claimed in claim 1 is characterized in that, also comprises:
Said each raw pixel data of analyzing each image block respectively distributes with an intensity gray scale value that gets each image block; And
Said intensity gray scale value according to each image block distributes to calculate and the corresponding gain trace of each image block.
3. method for correcting image as claimed in claim 1 is characterized in that, also comprises:
Said each raw pixel data of analyzing each image block respectively is to get a border characteristic of each image block; And
According to the said border characteristic of each image block to calculate and the corresponding said border gain parameter of each image block.
4. a display panel is characterized in that, comprises:
One image size is set module, and it is in order to set an image area block size of scanning one image frame; And,
One image correcting module; It moves the distance of at least one pixel of said image block one by one; To scan said image frame; And obtain the corresponding corrected parameter of each image block of said image frame, be modified to a plurality of correction pixel datas with a plurality of raw pixel data with each image block.
5. display panel as claimed in claim 4 is characterized in that, also comprises:
One analysis module, its said raw pixel data of analyzing each image block respectively distributes with an intensity gray scale value that gets each image block; And
One computing module, its said intensity gray scale value according to each image block distributes to calculate and the corresponding said gain trace of each image block.
6. display panel as claimed in claim 4 is characterized in that, also comprises:
One analysis module, its said raw pixel data of analyzing each image block respectively is to get a border characteristic of each image block; And
One computing module, its according to the said border characteristic of each image block to calculate and the corresponding said border gain parameter of each image block.
7. a display device is characterized in that, comprises: a display panel and a module backlight;
Described display panel is in order to show an image frame, and it comprises:
One pel array,
One image size is set module, and it is in order to setting an image area block size of the said image frame of scanning,
One image correcting module; It moves the distance of at least one pixel of said image block one by one; To scan said image frame; And the corresponding corrected parameter of each image block that obtains said image frame is modified to a plurality of correction pixel datas with a plurality of raw pixel data with each said each image block, and
One data line drive circuit, it receives said correction pixel data and drives said pel array to produce corresponding drive signal;
Described module backlight is in order to provide said display panel required backlight.
8. display device as claimed in claim 7 is characterized in that, also comprises:
One analysis module, its said raw pixel data of analyzing each image block respectively distributes with an intensity gray scale value that gets each image block; And
One computing module, its said intensity gray scale value according to each image block distributes to calculate and the corresponding said gain trace of each image block.
9. display device as claimed in claim 7 is characterized in that, also comprises:
One analysis module, its said each raw pixel data of analyzing each image block respectively is to get a border characteristic of each image block; And
One computing module, its according to the said border characteristic of each image block to calculate and the corresponding said border gain parameter of each image block.
CN2007101398637A 2007-07-23 2007-07-23 Display apparatus, display panel and method for correcting image Expired - Fee Related CN101354879B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4801933A (en) * 1985-03-23 1989-01-31 Sharp Kabushiki Kaisha Liquid crystal matrix device having separate driving circuits with diverse driving voltages
WO2007063771A1 (en) * 2005-11-30 2007-06-07 Nec Corporation Image processing device, display device, image processing method, and program

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4801933A (en) * 1985-03-23 1989-01-31 Sharp Kabushiki Kaisha Liquid crystal matrix device having separate driving circuits with diverse driving voltages
WO2007063771A1 (en) * 2005-11-30 2007-06-07 Nec Corporation Image processing device, display device, image processing method, and program

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