CN101727843B - Liquid crystal display, device and method for processing image data thereof - Google Patents
Liquid crystal display, device and method for processing image data thereof Download PDFInfo
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- CN101727843B CN101727843B CN2008101675263A CN200810167526A CN101727843B CN 101727843 B CN101727843 B CN 101727843B CN 2008101675263 A CN2008101675263 A CN 2008101675263A CN 200810167526 A CN200810167526 A CN 200810167526A CN 101727843 B CN101727843 B CN 101727843B
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Abstract
The invention discloses a liquid crystal display, a device and a method for processing image data thereof. The liquid crystal display comprises a liquid crystal display panel, a backlight module and an image data processing device, wherein the liquid crystal display panel is used for displaying an image; the backlight module is used for supplying an area light source which is needed by the liquid crystal display panel; and the image data processing device compensates for the image data of the image according to the brightness distribution state of the area light source which is actually supplied by the backlight module to the liquid crystal display panel, so the brightness of the image which is displayed by the liquid crystal display panel is homogenized.
Description
Technical field
The invention relates to a kind of plane display technique, and particularly relevant for a kind of LCD and image data processing device and method.
Background technology
Evolution along with photoelectricity and semiconductor technology, so driven the flourish of flat-panel screens, and in many flat-panel screens, LCD has become the main flow in market immediately because of having advantageous characteristic such as high spatial utilization ratio, low consumpting power, radiationless and low electromagnetic interference (EMI).LCD generally comprises display panels (LCD panel) and module backlight (backlightmodule), and because display panels itself does not have self luminous characteristic, therefore module backlight must be configured in the display panels below, the area source that provides display panels required is provided, and so LCD could be watched to the user by show image.
Module backlight now is big to being divided into straight-down negative (bottom lighting type) and two kinds of side-light types (edge lighting type), wherein down straight aphototropism mode set is applied in the LCD of large-size usually, and side-light type module backlight exists owing to having characteristics such as frameization in light weight, slim, narrow and low power consumption, so in being widely used in, in the undersized LCD.Generally speaking, some costs of manufacture comparatively cheap in, in the middle of the undersized LCD, it more can adopt single side-light type module backlight to supply display panels required area source.
Yet, because the light source (for example light emitting diode, CCFL etc.) of single side-light type module backlight generally can be placed on the single side (for example downside) of whole single side-light type module backlight, so what well imagine is, single side-light type module backlight is supplied to the area source intensity of display panels to be decremented to its upside by its downside, to such an extent as to single side-light type module backlight is supplied to the area source meeting of display panels inhomogeneous, and then the image frame degradation that causes LCD to present.
So, someone just propose on the light guide plate of single side-light type module backlight (light-guideplate), directly to be printed with some specific reflection graphic patterns (for example dot, concentric circles ... etc.), and, so can solve the shortcoming of old single side-light type module backlight effectively according to determining the printing density and the area size of these reflection graphic patterns recently with the distance of light source.Wherein, the density of the reflection graphic patterns of close light source part can be lower, and area is also less; And can be higher away from the density of the reflection graphic patterns of light source part, and area be also bigger.
Though the mode that directly is printed with reflection graphic patterns on the light guide plate of single side-light type module backlight can solve the shortcoming of old single side-light type module backlight really effectively, this mode also can allow the design cost of single side-light type module integral body backlight increase.In addition, after completing, just can't change its state again owing to be printed with the light guide plate of reflection graphic patterns, so its area source of supplying still takes place when inhomogeneous after the whole group of single side-light type module backlight is upright, just can't carry out any adjustment again this moment, and so settling mode not only can cause the low of design applicability, and also can suppress the making yield of module backlight.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of image data processing device and method, and it reaches homogenising by the mode of the image data of compensation image frame with the brightness that causes the shown image frame of its applied LCD.
Based on above-mentioned and the purpose desiring to reach, the present invention proposes a kind of image data processing device, it comprises first converting unit, subregion compensating unit, reproducing unit, and second converting unit.Wherein, first converting unit is in order to receive and to change the image data that is shown in the image frame on the display panels, so that the GTG of the image data of described image frame-penetrance corresponding relation is a linear relationship.The subregion compensating unit can be coupled to first converting unit, in order to the Luminance Distribution state of foundation module actual provision backlight to the area source of display panels, and earlier described image frame is divided into multi-region sub-image picture, then again the image data of each district's sub-image picture is multiplied by an offset of correspondence.
Reproducing unit can be coupled to the subregion compensating unit, in order to the image data that is multiplied by each the district's sub-image picture behind the described offset is handled, uses and reappears the image data with radix point numerical value.Second converting unit can be coupled to reproducing unit, in order to receive and to change the image data of handling each district's sub-image picture later via reproducing unit, concerns so that the GTG-penetrance corresponding relation of the image data of each district's sub-image picture is a gamma.
In one embodiment of the invention, described image data processing device more comprises a look-up table, and it couples the subregion compensating unit, in order to described offset to be provided.
In one embodiment of the invention, described look-up table can each district's sub-image picture of record out of the ordinary brightness with respect to a plurality of ratios between the brightness of the sub-image picture that has minimum brightness in the described multi-region sub-image picture, and these ratios distinctly for each distinguish the sub-image picture image data the offset that is multiplied by of correspondence.
In one embodiment of the invention, the radix point numerical value figure place that reproducing unit reappears the image data with radix point numerical value can be determined with respect to the ratio between the brightness of the sub-image picture that has maximum brightness by the brightness of the sub-image picture that has minimum brightness.
In one embodiment of the invention, reproducing unit can add up at the radix point numerical value that every M has been multiplied by the image data behind the described offset, use when carry, the integer numerical value that causes M to be multiplied by the image data behind the described offset adds 1, otherwise the radix point numerical value that then described M has been multiplied by the image data behind the described offset is cast out, and wherein M is a positive integer.
In one embodiment of the invention, during 2N picture of display panels, reproducing unit is not handled the image data of the 1st pixel of all even column pixels of display panels, and during (2N+1) individual picture of display panels, reproducing unit is not handled the image data of the 1st pixel of all odd column pixels of display panels.Wherein, N is a positive integer.
From another viewpoint, the invention provides a kind of video data processing method, it comprises the following steps: that at first conversion is shown in the image data of the image frame on the display panels, so that the GTG of the image data of described image frame-penetrance corresponding relation is a linear relationship.Then,, earlier described image frame is divided into multi-region sub-image picture, then again the image data of each district's sub-image picture is multiplied by an offset of correspondence according to the Luminance Distribution state of module actual provision backlight to the area source of display panels.
Afterwards, the image data that is multiplied by each the district's sub-image picture behind the described offset is handled, used and reappear image data with radix point numerical value.At last, the image data of conversion process each district's sub-image picture later is so that the GTG-penetrance corresponding relation of the image data of each district's sub-image picture is the gamma relation.
In one embodiment of the invention, the corresponding offset that is multiplied by of image data institute of each district's sub-image picture can be learnt through searching the mode of a look-up table.
In one embodiment of the invention, described look-up table can each district's sub-image picture of record out of the ordinary brightness with respect to a plurality of ratios between the brightness of the sub-image picture that has minimum brightness in the described multi-region sub-image picture, and these ratios distinctly for each distinguish the sub-image picture image data the offset that is multiplied by of correspondence.
In one embodiment of the invention, the radix point numerical value figure place of reappearing the image data with radix point numerical value can be determined with respect to the ratio between the brightness of the sub-image picture that has maximum brightness by the brightness of the sub-image picture that has minimum brightness.
In one embodiment of the invention, the step that reproduction has an image data of radix point numerical value comprises at every M radix point numerical value that has been multiplied by the image data behind the described offset and adding up, use when carry, the integer numerical value that causes M to be multiplied by the image data behind the described offset adds 1, otherwise the radix point numerical value that then described M has been multiplied by the image data behind the described offset is cast out, and wherein M is a positive integer.
In one embodiment of the invention, during 2N picture of display panels, the image data of the 1st pixel of all even column pixels of display panels is not handled, and during (2N+1) individual picture of display panels, the image data of the 1st pixel of all odd column pixels of display panels is not handled.Wherein, N is a positive integer.
From another viewpoint, the invention provides a kind of LCD again, it comprises display panels, module backlight, and the image data processing device that the invention described above proposed.Wherein, display panels is in order to show an image frame.Module backlight is in order to provide display panels required area source.Image data processing device can be according to module actual provision backlight to the Luminance Distribution state of display panels area source, and the image data of described image frame is compensated, so that the brightness uniformity of the shown image frame of display panels.
Image data processing device proposed by the invention and method mainly are the modes that replaces printing reflection graphic patterns on the light guide plate that is known in module backlight by the mode of the image data of compensation image frame, so settling mode (solution) can't make the design cost of module backlight increase, and can cause the brightness of the shown image frame of its applied LCD to reach homogenising equally.In addition, upright even if module backlight has been organized, image data processing device of the present invention and method also can compensate the image data of image frame, so the design applicability of image data processing device of the present invention and method is quite high.
For above and other objects of the present invention, feature and advantage can be become apparent, several embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 illustrates the system block diagrams into the LCD of one embodiment of the invention.
Fig. 2 illustrates the inside calcspar into the image data processing device of one embodiment of the invention.
Fig. 3 illustrates the process flow diagram into the video data processing method of one embodiment of the invention.
[primary clustering symbol description]
100: LCD 101: display panels
103: module 105 backlight: image data processing device
107: time schedule controller 109: gate drivers
111: source electrode driver VD: the image data of image frame
VD ': the image data 209 of compensation image frame later: look-up table
A0-An: sub-image picture L0-Ln: the brightness of sub-image picture
Converting unit 203 in 201: the first: the subregion compensating unit
205: 207: the second converting units of reproducing unit
S301-S307: each step of the process flow diagram of the video data processing method of one embodiment of the invention
Embodiment
The technology effect that the present invention desired to reach is exactly in order to make the brightness of the image frame that LCD is shown reach homogenising.Encyclopaedize and following content will be a technical characterictic at this case, use offering those skilled in the relevant art of the present invention and consider and examine.
Fig. 1 illustrates the system block diagrams into the LCD 100 of one embodiment of the invention.Please refer to Fig. 1, LCD 100 comprises display panels 101, module backlight 103, image data processing device 105, time schedule controller 107, gate drivers 109, and source electrode driver 111.Display panels 101 is in order to show an image frame (video frame).Module 103 backlight is in order to provide display panels 101 required area source.Image data processing device 105 can be according to the Luminance Distribution state of module 103 actual provision backlight to the required area source of display panels 101, and the image data VD of described image frame is compensated, use the brightness uniformity that causes the shown image frame of display panels 101.
And the spirit in order to want to illustrate more clearly that institute of the present invention desire is set forth supposes that in this module 103 backlight is single side-light type module backlight (single edge lighting type), but is not restricted to this.By in the content that prior art disclosed as can be known, when the light source of module 103 backlight (light emitting diode for example, CCFL etc.) be placed on the single side (downside for example of whole module backlight 103, but also can be, a left side or right side) time, the area source intensity of its display panels that is supplied to 101 can be decremented to its upside by its downside, to such an extent as to single side-light type module 103 backlight is supplied to the area source meeting inhomogeneous (that is can be decremented to its upside from the downside of display panels 101) of display panels 101, and then the image frame degradation that causes LCD 100 to be presented.
Yet, why present embodiment can generally not be printed with under the condition of reflection graphic patterns in the light guide plate of module 103 backlight in employing, can also reach and allow the brightness uniformity of the shown image frame of LCD 100, its topmost pass technology is the effect that is the image data processing device 105 of present embodiment.Therefore, will the arrange in pairs or groups inside calcspar of image data processing device 105 of following content is done one and is explained and consider and examine for those skilled in the relevant art of the present invention.
Fig. 2 illustrates the inside calcspar into the image data processing device 105 of one embodiment of the invention.Please merge with reference to Fig. 1 and Fig. 2, image data processing device 105 comprises first converting unit 201, subregion compensating unit 203, reproducing unit 205, second converting unit 207, and look-up table 209.First converting unit 201 is in order to receive and to change the image data VD that is shown in the image frame on the display panels 101, GTG-penetrance corresponding relation of using the image data VD that causes described image frame is a linear relationship, and with field of the present invention have know usually the knowledgeable as can be known the effect of first converting unit 201 be the action of the image data VD of image frame being made linear gamma (de-gamma).
Subregion compensating unit 203 couples first converting unit 201, look-up table 209 and reproducing unit 205, in order to according to the Luminance Distribution state of module 103 actual provision backlight, and earlier described image frame is divided into multi-region sub-image picture A0 to the required area source of display panels 101
-An, an offset that is provided by 209 correspondences of look-up table is provided the image data of then again each being distinguished sub-image picture A0-An.In present embodiment, because module 103 actual provision backlight to the Luminance Distribution state of the required area source of display panels 101 can be decremented to its upside from the downside of display panels 101, so what well imagine is, the brightness L0 of sub-image picture A0 can be the brightest, and the brightness L1 of sub-image picture A1 can be time bright, the rest may be inferred to the brightness Ln of sub-image picture An can be the darkest.
The base this, the brightness L0-Ln that present embodiment can be distinguished each sub-image picture A0-An is embedded in the look-up table 209 with respect to a plurality of ratios between the brightness Ln of the sub-image picture An that has minimum brightness, and these ratios promptly out of the ordinary for each distinguish sub-image picture A0-An image data the offset that is multiplied by of correspondence.Clearer, look-up table 209 can record Ln/L0, Ln/L1, Ln/L2 ..., a plurality of ratios such as Ln/L (n-1) and Ln/Ln are in it, wherein the ratio of Ln/L0 the offset that is multiplied by by the image data of sub-image picture A0 of correspondence, the ratio of Ln/L1 the offset that is multiplied by by the image data of sub-image picture A1 of correspondence, by that analogy to the ratio of Ln/L (n-1) the offset that is multiplied by by the image data of sub-image picture A (n-1) of correspondence, and the ratio of Ln/Ln (that is 1) the offset that is multiplied by by the image data of sub-image picture An of correspondence.
So as can be known according to foregoing, present embodiment is that the brightness Ln with sub-image picture An is the brightness L0-L (n-1) that a benchmark is adjusted all the other sub-image picture A0-A (n-1), use making that the brightness L0-Ln of sub-image picture A0-An is all consistent, so the brightness of the shown image frame of display panels 101 will homogenising.
What deserves to be mentioned is earlier in this, might have radix point owing to be multiplied by the image data of each the district sub-image picture A0-An behind the described offset, so in order to keep the expressive ability (being generally 8 GTG numerical value) of the original image data of each district sub-image picture A0-An, reproducing unit 205 can be handled the image data that is multiplied by each the district sub-image picture A0-An behind the described offset, uses and reappears the image data with radix point numerical value.
In present embodiment, the radix point numerical value figure place that reproducing unit 205 reappears the image data with radix point numerical value can be determined with respect to the ratio between the brightness L0 of the sub-image picture A0 that has maximum brightness by the brightness Ln of the sub-image picture An that has minimum brightness.In simple terms, be exactly the ratio of L0/Ln.Wherein, when the ratio of L0/Ln less than 2 the time, the radix point numerical value figure place that reproducing unit 205 reappears the image data with radix point numerical value is 1; When the ratio of L0/Ln greater than 2 less than 4 the time, the radix point numerical value figure place that reproducing unit 205 reappears the image data with radix point numerical value is 2; When the ratio of L0/Ln greater than 4 less than 8 the time, the radix point numerical value figure place that reproducing unit 205 reappears the image data with radix point numerical value is 3, please by that analogy it, so repeat no more.
In addition, reproducing unit 205 can add up at every M radix point numerical value that has been multiplied by the image data behind the described offset, use when carry, the integer numerical value that causes M to be multiplied by the image data behind the described offset adds 1, otherwise the radix point numerical value that then described M has been multiplied by the image data behind the described offset is cast out, and wherein M is a positive integer.
For instance, suppose that described M is 3, and the 1st row pixel of display panels 101 has 6 pixels (but neither be limited to this), wherein to be multiplied by the image data behind the described offset distinctly be 26.1 GTGs, 52.3 GTGs, 62.8 GTGs, 15.3 GTGs, 52.3 GTGs and 102.3 GTGs to these 6 pixels, and the numerical value of M must be according to the ability of the size of pixel and human eye discrimination and decided.
So according under this assumed condition, reproducing unit 205 can be earlier adds up at preceding 3 the radix point numerical value that have been multiplied by the image data behind the described offset, also being about to 0.1 GTG, 0.3 GTG and 0.8 GTG adds up, clearly can carry in this, so reproducing unit 205 can cause preceding 3 image datas that have been multiplied by behind the described offset to become 26 GTGs, 52 GTGs and 63 GTGs.Also also because of so, become and carry out behind 26 GTGs, 52 GTGs and 63 GTGs spacing color mixedly again if will preceding 3 be multiplied by image data behind the described offset, can cause image data reproduction with radix point numerical value.
And then, reproducing unit 205 can be again adds up at back 3 the radix point numerical value that have been multiplied by the image data behind the described offset, also being about to 0.3 GTG, 0.3 GTG and 0.3 GTG adds up, clearly can't carry in this, so reproducing unit 205 can cause back 3 image datas that have been multiplied by behind the described offset to become 15 GTGs, 52 GTGs and 102 GTGs.Afterwards, reproducing unit 205 can be handled at all the other row pixels of display panels 101 again, and the mode of handling with above-mentioned exemplify similar, so also no longer given unnecessary details it at this.
Moreover, in order not allow display panels 101 when showing some static image picture, produce fixedly striped, so present embodiment is (N is a positive integer) during 2N picture of display panels 101, reproducing unit 205 can not handled the image data of the 1st pixel of all even column pixels of display panels 101, and during (2N+1) individual picture of display panels 101, reproducing unit 205 can not handled the image data of the 1st pixel of all odd column pixels of display panels 101, overcomes the fixedly striped that display panels 101 is produced when showing some static image picture by this.
Please continue with reference to Fig. 1 and Fig. 2, second converting unit 207 couples reproducing unit 205, in order to receive and to change the image data of handling each district sub-image picture A0-An later via reproducing unit 205, GTG-penetrance corresponding relation of using the image data that causes each district sub-image picture A0-An is the gamma relation, and with field of the present invention have know usually the knowledgeable as can be known the effect of second converting unit 207 be the action of the image data of each district sub-image picture A0-An being made back non-linear gamma (gamma), offer time schedule controller 107 with the image data VD ' of the image frame after will compensating.
In view of the above because the image data processing device 105 of present embodiment can allow the brightness L0-Ln of each sub-image picture A0-An all consistent, so undoubtedly as can be known be the brightness meeting homogenising of the image frame that display panels 101 is shown.In addition, upright even if module backlight 103 has been organized, image data processing device 105 also can compensate the image data VD of image frame, so its design applicability is quite high.
Yet,, be not restricted to the embodiment of the foregoing description according to spirit of the present invention.That is to say that module 103 backlight also can utilize bilateral light formula module backlight to realize.And with this understanding, it is that the brightness that benchmark is adjusted all the other sub-image pictures get final product that image data processing device 105 still only needs with the brightness that has the sub-image picture of minimum brightness among all sub-image picture A0-An, the brightness uniformity that also can allow the shown image frame of LCD 100 like this.
Moreover, subregion compensating unit 203 more can be according to the Luminance Distribution state of module 103 actual provision backlight to the required area source of display panels 101, and described image frame is divided into the multi-region sub-image picture A (0 of two dimensional form, 0)-A (n, m), and as long as record has all sub-image picture A (0 in look-up table 209,0)-A (n, m) under the condition of pairing offset, module 103 backlight just can be realized it by many side-light types module backlight, so image data processing device 105 still only needs with all sub-image picture A (0,0)-A (n, m) brightness that has the sub-image picture of minimum brightness in is that the brightness that benchmark is adjusted all the other sub-image pictures gets final product, and so also can allow the brightness uniformity of the shown image frame of LCD 100.
Based on the content that the foregoing description disclosed, below will converge and put in order out a kind of video data processing method and consider and examine for those skilled in the relevant art of the present invention.Fig. 3 illustrates the process flow diagram into the video data processing method of one embodiment of the invention.Please refer to Fig. 3, the video data processing method of present embodiment comprises the following steps: at first, as described in step S301, conversion is shown in the image data of the image frame on the display panels, and GTG-penetrance corresponding relation of using the image data that causes described image frame is a linear relationship.Then, as described in step S303, according to the Luminance Distribution state of module actual provision backlight to the area source of display panels, earlier described image frame is divided into multi-region sub-image picture, then again the image data of each district's sub-image picture is multiplied by an offset of correspondence.
In present embodiment, the corresponding offset that is multiplied by of image data institute of each district's sub-image picture can be learnt through searching the mode of a look-up table.Wherein, this look-up table can each district's sub-image picture of record out of the ordinary brightness with respect to a plurality of ratios between the brightness of the sub-image picture that has minimum brightness in the described multi-region sub-image picture, and these ratios distinctly for each distinguish the sub-image picture image data the offset that is multiplied by of correspondence.
Afterwards, as described in step S305, the image data that is multiplied by each the district's sub-image picture behind the described offset is handled, used and reappear image data with radix point numerical value.In present embodiment, the step that reproduction has an image data of radix point numerical value comprises at every M radix point numerical value that has been multiplied by the image data behind the described offset and adding up, use when carry, the integer numerical value that causes M to be multiplied by the image data behind the described offset adds 1, otherwise then described M radix point numerical value that has been multiplied by the image data behind the described offset is cast out.
In addition, in order not allow display panels when showing some static image picture, produce fixedly striped, so present embodiment is (N is a positive integer) during 2N picture of display panels, the image data of the 1st pixel of all even column pixels of display panels is not handled, and during (2N+1) individual picture of display panels, the image data of the 1st pixel of all odd column pixels of display panels is not handled yet, and overcomes the fixedly striped that display panels 101 is produced when showing some static image picture by this.
Moreover the radix point numerical value figure place of reappearing the image data with radix point numerical value can be determined with respect to the ratio between the brightness of the sub-image picture that has maximum brightness by the brightness of the sub-image picture that has minimum brightness.At last, as described in step S307, the image data of conversion process each district's sub-image picture later, GTG-penetrance corresponding relation of using the image data that causes each district's sub-image picture is the gamma relation.
In sum, image data processing device proposed by the invention and method mainly are the modes that replaces printing reflection graphic patterns on the light guide plate that is known in module backlight by the mode of the image data of compensation image frame, so settling mode (solution) can't make the design cost of module backlight increase, and can cause the brightness of the shown image frame of its applied LCD to reach homogenising equally.In addition, upright even if module backlight has been organized, image data processing device of the present invention and method also can compensate the image data of image frame, so the design applicability of image data processing device of the present invention and method is quite high.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (15)
1. an image data processing device is characterized in that, comprising:
One first converting unit is in order to receive and to change the image data that is shown in the image frame on the display panels, so that the GTG of the image data of this image frame-penetrance corresponding relation is a linear relationship;
One subregion compensating unit, couple this first converting unit, according to the Luminance Distribution state of a module actual provision backlight to the area source of this display panels, earlier this image frame is divided into multi-region sub-image picture, then again the image data of each district's sub-image picture is multiplied by an offset of correspondence;
One reproducing unit couples this subregion compensating unit, in order to the image data that is multiplied by each the district's sub-image picture behind this offset is handled, uses and reappears the image data with radix point numerical value; This reproducing unit can add up at the radix point numerical value that every M has been multiplied by the image data behind this offset, use when carry, the integer numerical value that causes M to be multiplied by the image data behind this offset adds 1, otherwise the radix point numerical value that then described M has been multiplied by the image data behind this offset is cast out, and wherein M is a positive integer; And
One second converting unit couples this reproducing unit, in order to receive and to change the image data of handling each district's sub-image picture later via this reproducing unit, concerns so that the GTG-penetrance corresponding relation of the image data of each district's sub-image picture is a gamma.
2. image data processing device as claimed in claim 1 is characterized in that, also comprises a look-up table, couples this subregion compensating unit, in order to this offset to be provided.
3. image data processing device as claimed in claim 2, it is characterized in that, this look-up table can each district's sub-image picture of record out of the ordinary brightness with respect to a plurality of ratios between the brightness of the sub-image picture that has minimum brightness in those sub-image pictures, and those ratios distinctly for each distinguish the sub-image picture image data this offset of being multiplied by of correspondence.
4. image data processing device as claimed in claim 2, it is characterized in that the radix point numerical value figure place that this reproducing unit reappears the image data with radix point numerical value can be determined with respect to the ratio between the brightness of the sub-image picture that has maximum brightness by the brightness of the sub-image picture that has minimum brightness.
5. image data processing device as claimed in claim 1, it is characterized in that, during 2N picture of this display panels, this reproducing unit is not handled the image data of the 1st pixel of all even column pixels of this display panels, and during (2N+1) individual picture of this display panels, this reproducing unit is not handled the image data of the 1st pixel of all odd column pixels of this display panels, and wherein N is a positive integer.
6. a video data processing method is characterized in that, comprises the following steps:
Conversion is shown in the image data of the image frame on the display panels, so that the GTG of the image data of this image frame-penetrance corresponding relation is a linear relationship;
According to the Luminance Distribution state of a module actual provision backlight to the area source of this display panels, earlier this image frame is divided into multi-region sub-image picture, then again the image data of each district's sub-image picture is multiplied by an offset of correspondence;
The image data that is multiplied by each the district's sub-image picture behind this offset is handled, used and reappear image data with radix point numerical value; And
The image data of conversion process each district's sub-image picture later is so that the GTG-penetrance corresponding relation of the image data of each district's sub-image picture is the gamma relation;
Wherein, the step that reproduction has an image data of radix point numerical value comprises at every M radix point numerical value that has been multiplied by the image data behind this offset and adding up, use when carry, the integer numerical value that causes M to be multiplied by the image data behind this offset adds 1, otherwise the radix point numerical value that then described M has been multiplied by the image data behind this offset is cast out, and wherein M is a positive integer.
7. video data processing method as claimed in claim 6 is characterized in that, corresponding this offset that is multiplied by of image data institute of each district's sub-image picture can be learnt through searching the mode of a look-up table.
8. video data processing method as claimed in claim 7, it is characterized in that, this look-up table can each district's sub-image picture of record out of the ordinary brightness with respect to a plurality of ratios between the brightness of the sub-image picture that has minimum brightness in those sub-image pictures, and those ratios distinctly for each distinguish the sub-image picture image data this offset of being multiplied by of correspondence.
9. video data processing method as claimed in claim 6, it is characterized in that the radix point numerical value figure place of reappearing the image data with radix point numerical value can be determined with respect to the ratio between the brightness of the sub-image picture that has maximum brightness by the brightness of the sub-image picture that has minimum brightness.
10. video data processing method as claimed in claim 6, it is characterized in that, during 2N picture of this display panels, the image data of the 1st pixel of all even column pixels of this display panels is not handled, and during (2N+1) individual picture of this display panels, the image data of the 1st pixel of all odd column pixels of this display panels is not handled, and wherein N is a positive integer.
11. a LCD is characterized in that, comprising:
One display panels is in order to show an image frame;
One module backlight, in order to providing this display panels required area source, and
One image data processing device, according to the Luminance Distribution state of this module actual provision backlight to the area source of this display panels, and the image data of this image frame is compensated, so that the brightness uniformity of shown this image frame of this display panels;
This image data processing device further comprises:
One first converting unit is in order to receive and to change the image data that is shown in this image frame, so that the GTG of the image data of this image frame-penetrance corresponding relation is a linear relationship;
One subregion compensating unit, couple this first converting unit, according to the Luminance Distribution state of this module actual provision backlight to the area source of this display panels, earlier this image frame is divided into multi-region sub-image picture, then again the image data of each district's sub-image picture is multiplied by an offset of correspondence;
One reproducing unit couples this subregion compensating unit, in order to the image data that is multiplied by each the district's sub-image picture behind this offset is handled, uses and reappears the image data with radix point numerical value; This reproducing unit can add up at the radix point numerical value that every M has been multiplied by the image data behind this offset, use when carry, the integer numerical value that causes M to be multiplied by the image data behind this offset adds 1, otherwise the radix point numerical value that then described M has been multiplied by the image data behind this offset is cast out, and wherein M is a positive integer; And
One second converting unit couples this reproducing unit, in order to receive and to change the image data of handling each district's sub-image picture later via this reproducing unit, concerns so that the GTG-penetrance corresponding relation of the image data of each district's sub-image picture is a gamma.
12. LCD as claimed in claim 11 is characterized in that, this image data processing device more comprises a look-up table, couples this subregion compensating unit, in order to this offset to be provided.
13. LCD as claimed in claim 12, it is characterized in that, this look-up table can each district's sub-image picture of record out of the ordinary brightness with respect to a plurality of ratios between the brightness of the sub-image picture that has minimum brightness in those sub-image pictures, and those ratios distinctly for each distinguish the sub-image picture image data this offset of being multiplied by of correspondence.
14. LCD as claimed in claim 11, it is characterized in that the radix point numerical value figure place that this reproducing unit reappears the image data with radix point numerical value can be determined with respect to the ratio between the brightness of the sub-image picture that has maximum brightness by the brightness of the sub-image picture that has minimum brightness.
15. LCD as claimed in claim 11, it is characterized in that, during 2N picture of this display panels, this reproducing unit is not handled the image data of the 1st pixel of all even column pixels of this display panels, and during (2N+1) individual picture of this display panels, this reproducing unit is not handled the image data of the 1st pixel of all odd column pixels of this display panels, and wherein N is a positive integer.
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| CN104050944B (en) * | 2014-06-13 | 2016-09-28 | 京东方科技集团股份有限公司 | Liquid crystal display control method, system and display device |
| CN104240662B (en) * | 2014-09-10 | 2016-06-29 | 京东方科技集团股份有限公司 | A kind of method and apparatus improving picture crosstalk |
| CN106228924B (en) * | 2016-08-05 | 2019-09-13 | 武汉精测电子集团股份有限公司 | Color spot compensating image signals generating means, method and color spot failures repair system |
| US10490139B2 (en) | 2017-10-31 | 2019-11-26 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display driving method and related apparatus |
| CN107578759B (en) * | 2017-10-31 | 2020-01-03 | 武汉华星光电技术有限公司 | Display driving method and related device |
| CN107749288B (en) * | 2017-11-21 | 2020-04-28 | 深圳市华星光电技术有限公司 | Mura compensation method of liquid crystal display device and liquid crystal display device |
| CN108766350B (en) * | 2018-07-25 | 2020-02-14 | 昆山国显光电有限公司 | Compensation data transmission method and display panel |
| CN110660371B (en) * | 2019-09-30 | 2021-08-10 | 海信视像科技股份有限公司 | Liquid crystal module display correction method and device |
| CN114373432B (en) * | 2021-12-30 | 2023-10-24 | 长沙惠科光电有限公司 | Side-in type liquid crystal display panel and control method thereof |
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