CN101667389B - Compensation method of pixel data, time sequence controller and liquid crystal display (LCD) - Google Patents
Compensation method of pixel data, time sequence controller and liquid crystal display (LCD) Download PDFInfo
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- CN101667389B CN101667389B CN2009101790016A CN200910179001A CN101667389B CN 101667389 B CN101667389 B CN 101667389B CN 2009101790016 A CN2009101790016 A CN 2009101790016A CN 200910179001 A CN200910179001 A CN 200910179001A CN 101667389 B CN101667389 B CN 101667389B
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Abstract
The invention relates to a compensation method of pixel data, a time sequence controller and a liquid crystal display (LCD). The compensation method comprises: according to the positions of a plurality of backlight areas in a backlight module, determining a first compensation coefficient of each backlight area; according to the way of mutual influence between the position of each pixel in a display panel corresponding to the backlight areas and the backlight areas, determining at least one first compensation coefficient corresponding to each pixel; according to the at least one first compensation coefficient corresponding to each pixel, executing calculation and obtaining a second compensation coefficient of each pixel; and according to the second compensation coefficient of each pixel, respectively compensating the pixel data of each pixel. The image shown by the invention can avoid block artifact effect at the boundary dividing lines of the backlight areas caused by the difference in the brightness of light sources provided by the backlight areas, thus ensuring the finally shown image to be comparatively smooth.
Description
Technical field
The present invention relates to a kind of plane display technique, and be particularly related to a kind of compensation method and time schedule controller thereof that the high dynamic range display technique is applied in the pixel data of LCD.
Background technology
Generally speaking; for will be with high dynamic range (high dynamic range; HDR) display technique is applied to LCD (liquid crystal display; LCD), backlight module (backlightmodule) can be divided into a plurality of backlight area (also being the backing structure in M*N district) usually to carry out subregion control (localdimming).In case after the light-source brightness that each backlight area provided was determined, the pixel data of the pixel of the pairing pixel region of each backlight area will be compensated according to this, can show target image (target image) so as to the combination of expecting both.
Yet, because the pixel data of the pixel of each pixel region only can compensate according to the light-source brightness that its pairing backlight area (also being single backlight area) provided, to such an extent as to the final image that presents of LCD is probably understood the difference because of the light-source brightness that each backlight area provided, and causes the border boundary of each backlight area to produce block effect.For instance, the skyblue of a certain district same color then can be seen the skyblue that shade differs at the border of these two backlight area boundary across two different backlight area in image.Thus, the final image that presents of LCD just can very level and smooth (smooth).
Summary of the invention
In view of this, in order to solve the problems referred to above that prior art exists, the invention provides a kind of compensation method of pixel data, it comprises: according to the position of a plurality of backlight area in the backlight module, determine first penalty coefficient of each backlight area; With respect to interactional mode between the position of described a plurality of backlight area and each backlight area, determine at least one first penalty coefficient of each pixel correspondence according to each pixel in the display panel; According at least one described first penalty coefficient of each pixel correspondence, carry out one and calculate and obtain second penalty coefficient of each pixel; And according to this second penalty coefficient of each pixel, the pixel data to each pixel compensates respectively.
In one embodiment of this invention, backlight module has the frame that is made of four limit walls, and interactional mode comprises between described a plurality of backlight area: the light source that single backlight area provided is not subjected to the influence of the light source that other backlight area provide; Single backlight area is near the single limit wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in three limits are provided; Single backlight area is near the both sides wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in both sides are provided; And single backlight area the limit wall with this backlight module is not adjacent, the light source that is provided is subjected to all influences adjacent or light source that other backlight area provided.
In one embodiment of this invention, determine the step of at least one described first penalty coefficient of each pixel correspondence to comprise: dividing described a plurality of pixel is first pixel group, second pixel group and the 3rd pixel group, one side wall of adjacent this frame of each pixel of this first pixel group wherein, and be positioned at edge and adjacent another backlight area of single backlight area; The both sides wall of adjacent this frame of each pixel of this second pixel group, and be positioned at the corner of single backlight area and not adjacent with other backlight area; And each pixel of the 3rd pixel group is not adjacent with any limit wall, and this first pixel group and this second pixel group surround the 3rd pixel group.
In one embodiment of this invention, each pixel in first pixel group the number of corresponding at least one described first penalty coefficient be 2.
In one embodiment of this invention, each pixel in second pixel group the number of corresponding at least one described first penalty coefficient be 1.
In one embodiment of this invention, each pixel in the 3rd pixel group the number of corresponding at least one described first penalty coefficient be 4.
In one embodiment of this invention, aforementioned calculating comprises interpolation calculating at least.
The present invention provides a kind of time schedule controller in addition, and it comprises compensating unit.This compensating unit through configuration to carry out the compensation method of aforementioned pixel data.
The present invention provides a kind of LCD again, and it comprises the backlight module of aforementioned time schedule controller and employing multi-region backing structure.
The present invention is different from the mode (also promptly only considering the just compensation of pixel data of single backlight area) that the pixel data of pixel of each pixel region of tradition only can compensate according to the light-source brightness that its pairing backlight area provided; The image that presents can't be because of the difference of the light-source brightness that each backlight area provided, and cause the border boundary of each backlight area to produce block effect, thereby make level and smooth that the final image that presents can be suitable.
Will be appreciated that above-mentioned general description and following embodiment only are exemplary and illustrative, it can not limit the scope that the present invention protects.
Description of drawings
Fig. 1 is depicted as the system block diagrams of the LCD of one embodiment of the invention.
Fig. 2 is depicted as the synoptic diagram of the backlight module of one embodiment of the invention.
Fig. 3 is depicted as the synoptic diagram of the display panel of one embodiment of the invention.
Fig. 4 is depicted as the compensation method process flow diagram of the pixel data of one embodiment of the invention.
Fig. 5 A～Fig. 5 D is shown as interactional synoptic diagram between the backlight area of one embodiment of the invention.
Description of reference numerals in the above-mentioned accompanying drawing is as follows:
100: LCD
101: display panel
103: backlight module
105: time schedule controller
105a: compensating unit
107: the backlight module driver
109: gate drivers
111: source electrode driver
B1～B9: backlight area
W1～W4: limit wall
F: frame
P1～P9: pixel region
P11～P14, P21～P24, P31～P34, P41～P44, P51～P54, P61～P64, P71～P74, P81～P84, P91～P94: subpixel area
S401～S404: each step of compensation method process flow diagram of the pixel data of one embodiment of the invention
LED, LED1, LED2: light emitting diode
Embodiment
Now will be in detail with reference to embodiments of the invention, the example of described embodiment is described in the accompanying drawings.In addition, all possibility parts, the identical or similar portions of element/member/symbology of use same numeral in drawings and the embodiments.
Fig. 1 is depicted as the system block diagrams of the LCD 100 of one embodiment of the invention.Please refer to Fig. 1, LCD 100 comprises display panel 101, backlight module 103, time schedule controller 105, backlight module driver 107, gate drivers 109 and source electrode driver 111.Wherein, have a plurality of pixels of arranging in the display panel 101, represent with i * j among Fig. 1 with matrix-style.
Backlight module 103 (for example for light-emitting diode (LED) backlight module) has a plurality of backlight area, in order to provide display panel 101 required backlight.Clearer, Fig. 2 is depicted as the synoptic diagram of the backlight module 103 of one embodiment of the invention, and Fig. 3 is depicted as the synoptic diagram of the display panel 101 of one embodiment of the invention.Please merge with reference to Fig. 1～Fig. 3, backlight module 103 has 9 backlight area B1～B9, but is not restricted to this.Backlight area B1～B9 by backlight module driver 107 with reference to give being driven respectively the backlight that provides display panel 101 required from backlight value that time schedule controller 105 obtained.
In the present embodiment, because backlight module 103 has 9 backlight area B1～B9, to such an extent as to display panel 101 can be divided into corresponding 9 pixel region P1～P9, and backlight area B1～B9 can provide light source to pixel region P1～P9 respectively.For instance, backlight area B1 can provide light source can provide light source to pixel region P2 to pixel region P1, backlight area B2, please the rest may be inferred can provide light source to pixel region P9 to backlight area B9.In addition, each pixel region P1～P9 can be divided into 4 subpixel area again, but is not restricted to this.For instance, pixel region P1 can be divided into subpixel area P11～P14, pixel region P2 can be divided into subpixel area P21～P24, please the rest may be inferred can be divided into subpixel area P91～P94 to pixel region P9.
Hence one can see that, the backlight module 103 of present embodiment is the backing structure that adopts the 3*3 district, and backlight area B1～B9 can be subjected to the control of time schedule controller 105 to reach the purpose of subregion control (localdimming) respectively, whereby can (high dynamic range, HDR) display technique be applied to LCD 100 with high dynamic range.
Yet, from content that prior art disclosed roughly as can be known, because the pixel data of the pixel of each pixel region only can compensate according to the light-source brightness that its pairing backlight area (also being single backlight area) provided, to such an extent as to the final image that presents of LCD is probably understood the difference because of the light-source brightness that each backlight area provided, and causes the border boundary of each backlight area to produce block effect.
In order to want effectively to solve such problem, the compensating unit 105a that present embodiment will be by time schedule controller 105 inside carries out two stage modulation with the pixel data to each pixel of display panel 101 and is compensated.
Clearer, Fig. 4 is depicted as the compensation method process flow diagram of the pixel data of one embodiment of the invention.Please merge with reference to Fig. 1～Fig. 4, the compensating unit 105a of time schedule controller 105 inside is through the position of configuration with foundation backlight area B1～B9, and determines 9 first penalty coefficients, as step S401; With respect to interactional mode between the position of backlight area B1～B9 and each backlight area B1～B9, and at least one first penalty coefficient of each pixel correspondence in the decision display panel 101 is as step S402 according to each pixel in the display panel 101; Obtain second penalty coefficient of each pixel according to corresponding at least one first penalty coefficient execution, one calculating of each pixel, as step S403; And respectively the pixel data of each pixel in the display panel 101 is compensated according to second penalty coefficient of each pixel, as step S404.
In the present embodiment, backlight module 103 has the frame F that is made of four limit wall W1～W4, and interactional mode includes following several situation between backlight area B1～B9, but is not restricted to this:
1, the light source that single backlight area provided is not subjected to the influence of the light source that other backlight area provide, and for example the light source that LED provided of the shown backlight area of Fig. 5 A is not subjected to the influence of the light source that other backlight area provide;
2, the single backlight area single frame of adjacent backlight module only, the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in three limits are provided, for example single limit wall W1, W2, W3 or the W4 of the only adjacent backlight module 103 of the light source that LED provided of the backlight area of Fig. 5 B as shown;
3, two frames of the adjacent backlight module of single backlight area, the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in both sides are provided, two frames (the W1 of the adjacent backlight module 103 of the light source that LED provided of the shown backlight area of Fig. 5 C for example, W2), (W1, W4), (W3, W2) or (W3, W4); And
4, the frame with backlight module is not adjacent for single backlight area, the light source that is provided is subjected to the influence of the light source that all adjacent backlight area provide, and for example the light source that provided of the LED 1 of the shown backlight area of Fig. 5 D is subjected to the influence of the light source that the LED 2 of adjacent or other backlight area provided.
In the present embodiment, since time schedule controller 105 can provide backlight value to backlight module driver 107 respectively backlight area B1～B9 being driven, so the compensating unit 105a of time schedule controller 105 inside can learn the interactional mode of each backlight area B1～B9 with reference to backlight value that time schedule controller 105 provided.For instance, the light source that backlight area B1, B3, B7 and B9 provided can be subjected to backlight module 103 two frames (W1, W4), (W1, W2), (W3, W4) or (W3, influence W2); The light source that backlight area B2, B4, B6 and B8 provided only is subjected to the influence of single limit wall W1, W4, W2 or the W3 of backlight module 103; Backlight area B5 then might not be subjected to or be subjected to the influence of the light source that all the other backlight area B1～B4 and B6～B9 are provided.
After in case the compensating unit 105a of time schedule controller 105 inside learns the interactional mode of each backlight area B1～B9, compensating unit 105a can know by inference and determines 9 first penalty coefficients with reference to the backlight value that time schedule controller 105 is provided, below will represent this 9 first penalty coefficients, and these 9 first penalty coefficient I1～I9 can distinguish respective pixel zone P1～P9 with I1～I9.For instance, first penalty coefficient I1 respective pixel zone P1, first penalty coefficient I2 respective pixel zone P2, the rest may be inferred to first penalty coefficient I9 respective pixel zone P9.
Based on as can be known above-mentioned, each pixel region P1～P9 can be divided into 4 subpixel area.In the present embodiment, the pixel that pixel in subpixel area P12, P13, P21, P22, P31, P34, P41, P43, P62, P64, P71, P74, P83, P84, P92 and the P93 is defined as in first pixel group, subpixel area P11, P32, P73 and the P94 is defined as second pixel group, and the pixel in all the other subpixel area P14, P23, P24, P33, P42, P44, P51, P52, P53, P54, P61, P63, P72, P81, P82 and the P91 then is defined as the 3rd pixel group.
In the present embodiment, one of limit wall W1～W4 of the close in fact backlight module 103 in the position of first pixel group; The position of second pixel group is positioned at the corner of frame F in fact, also promptly near two of the limit wall W1～W4 of backlight module 103; And first pixel group and second pixel group can surround the 3rd pixel group.
After compensating unit 105a determines 9 first penalty coefficient I1～I9, compensating unit 105a can be according to each pixel in the display panel 101 for the position of backlight area B1～B9, and determine corresponding first penalty coefficient of each pixel, and carry out one according to this and calculate and obtain second penalty coefficient of each pixel, compensate with the pixel data to each pixel in the display panel 101 respectively.
Clearer, because backlight area B1, B3, B7 and B9 offer the influence that the light source of the interior pixel of subpixel area P11, P32, P73 and P94 (yet being second pixel group) more can not be subjected to the light source that all the other backlight area B2, B4, B5, B6 and B8 are provided respectively.Therefore, compensating unit 105a can interior corresponding first penalty coefficient of each pixel of determinant pixel region P11 be I1 promptly, and carry out one according to this and calculate (for example interpolation calculating) and obtain second penalty coefficient (also promptly still first penalty coefficient be I1), compensate so as to pixel data to each pixel in the subpixel area P11.Similarly, compensating unit 105a equally can come respectively the pixel data of each pixel in subpixel area P32, P73 and the P94 is compensated with the first penalty coefficient I3, I7 and I9.Can know by inference thus, compensating unit 105a can come the pixel data of each pixel in second pixel group is compensated with single first penalty coefficient.
In addition, because backlight area B1～B4 and B6～B9 offer the influence that the light source of the pixel (also being first pixel group) in subpixel area P12, P13, P21, P22, P31, P34, P41, P43, P62, P64, P71, P74, P83, P84, P92 and the P93 is easier to be subjected to be close to the light source that backlight area provided respectively.For instance, the light source that backlight area B1 offers the pixel in the subpixel area P12 is easier to be subjected to the influence of the light source that backlight area B2 provided, and backlight area B1 offers the influence that the light source of the pixel in the subpixel area P13 is easier to be subjected to the light source that backlight area B4 provided.
More for instance, the light source that backlight area B2 offers the pixel in the subpixel area P21 is easier to be subjected to the influence of the light source that backlight area B1 provided, and backlight area B2 offers the influence that the light source of the pixel in the subpixel area P22 is easier to be subjected to the light source that backlight area B3 provided.Please the rest may be inferred, so no longer given unnecessary details.
Therefore, compensating unit 105a can interior corresponding first penalty coefficient of each pixel of determinant pixel region P12 be I1 and I2 promptly, and carry out a calculating (for example interpolation calculating) according to this and obtain second penalty coefficient (also being the interpolate value of the first penalty coefficient I1 and I2), compensate so as to pixel data to each pixel in the subpixel area P12.Similarly, compensating unit 105a can come the pixel data of each pixel in the subpixel area P13 is compensated with the interpolate value of the first penalty coefficient I1 and I4.
In this, the content that compensates for the pixel data of each pixel in subpixel area P12 and the P13 according to above-mentioned compensating unit 105a, those skilled in the art releases the mode that compensating unit 105a compensates for the pixel data of each pixel in subpixel area P21, P22, P31, P34, P41, P43, P62, P64, P71, P74, P83, P84, P92 and the P93 when class voluntarily, so also no longer given unnecessary details at this.Can know by inference thus, compensating unit 105a can come the pixel data of each pixel in first pixel group is compensated with the interpolate value of 2 first penalty coefficients.
Moreover, because backlight area B1～B9 offers the influence that the light source of the pixel (also being the 3rd pixel group) in subpixel area P14, P23, P24, P33, P42, P44, P51, P52, P53, P54, P61, P63, P72, P81, P82 and the P91 is easier to be subjected to the light source that backlight area provided on every side respectively.For instance, backlight area B 1 light source that offers the pixel in the subpixel area P14 is easier to be subjected to the influence of the light source that backlight area B2, B4 and B5 provided.
More for instance, the light source that backlight area B2 offers the pixel in the subpixel area P23 is easier to be subjected to the influence of the light source that backlight area B1, B4 and B5 provided, and backlight area B2 offers the influence that the light source of the interior pixel of subpixel area P24 is easier to be subjected to the light source that backlight area B3, B5 and B6 provided.Please the rest may be inferred, so no longer given unnecessary details.
Therefore, compensating unit 105a can interior corresponding first penalty coefficient of each pixel of determinant pixel region P14 be I1, I2, I4 and I5 promptly, and carry out a calculating (for example interpolation calculating) according to this and obtain second penalty coefficient (also being the interpolate value of the first penalty coefficient I1, I2, I4 and I5), compensate so as to pixel data to each pixel in the subpixel area P14.Similarly, compensating unit 105a can come the pixel data of each pixel in the subpixel area P23 is compensated with the interpolate value of the first penalty coefficient I1, I2, I4 and I5, and compensating unit 105a can come the pixel data of each pixel in the subpixel area P24 is compensated with the interpolate value of the first penalty coefficient I2, I3, I5 and I6.
In this, the content that compensates for the pixel data of each pixel in subpixel area P14, P23 and the P24 according to above-mentioned compensating unit 105a, those skilled in the art releases the mode that compensating unit 105a compensates for the pixel data of each pixel in subpixel area P33, P42, P44, P51, P52, P53, P54, P61, P63, P72, P81, P82 and the P91 when class voluntarily, so also no longer given unnecessary details at this.Can know by inference thus, compensating unit 105a can come the pixel data of each pixel in the 3rd pixel group is compensated with the interpolate value of 4 first penalty coefficients.
Thus, when time schedule controller 105 control gate drivers 109 were opened each row pixel in the display panel 101 one by one with serial output scanning signal, time schedule controller 105 can be by source electrode driver 111 to offer the row pixel of being opened by gate drivers 109 with compensating unit 105a compensation pixel data later.In addition, time schedule controller 105 also can provide backlight value to the brightness of backlight module driver 107 with the light source controlling backlight area B1～B9 respectively and provided this moment, so as to reaching the purpose of subregion control (local dimming), (high dynamic range, HDR) display technique is applied to LCD 100 smoothly and with high dynamic range.
In sum, time schedule controller 105 proposed by the invention can take into account the interactional degree of backlight area B1～B9 and carries out two stage modulation (around also promptly considering in the lump the influence of backlight area and carry out the compensation of pixel data) according to this, compensate with pixel data, so will be different from the mode (also promptly only considering the just compensation of pixel data of single backlight area) that the pixel data of pixel of each pixel region of tradition only can compensate according to the light-source brightness that its pairing backlight area provided the pixel in each pixel region P1～P9.
Therefore, the difference of the light-source brightness that the LCD 100 final images that present of the present invention can't be provided because of each backlight area B1～B9, and the border boundary that causes each backlight area B1～B9 produces block effect, thereby makes level and smooth (smooth) that the LCD 100 final images that present can be suitable.
In addition, though the foregoing description is that example describes with 3*3 backlight area and 3*3 pixel region, the present invention is not restricted to this.That is to say, can look the actual design demand and decide.Moreover; though the account form that the foregoing description is addressed is to be calculated as example with interpolation to describe; but the present invention is not restricted to this, for example also can utilize the parameter account form to replace interpolation and calculate, and the embodiment of described distortion also belongs to one of category of institute of the present invention desire protection.
Though the present invention discloses as above with above-mentioned one exemplary embodiment; right its is not in order to limit the present invention; those of ordinary skill in the technical field under any; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the scope that claim defined.
Claims (15)
1. the compensation method of a pixel data comprises:
According to the position of a plurality of backlight area in the backlight module, determine first penalty coefficient of each backlight area;
With respect to interactional mode between the position of described a plurality of backlight area and each backlight area, determine at least one first penalty coefficient of this each pixel correspondence according to each pixel in the display panel;
According at least one described first penalty coefficient of this each pixel correspondence, carry out one and calculate and obtain second penalty coefficient of this each pixel; And
According to this second penalty coefficient of this each pixel, the pixel data to each pixel compensates respectively,
Wherein this backlight module has a frame that is made of four limit walls, and interactional mode comprises between described a plurality of backlight area:
The light source that single backlight area provided is not subjected to the influence of the light source that other backlight area provide;
Single backlight area is near the single limit wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in three limits are provided;
Single backlight area is near the both sides wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in both sides are provided; And
The single backlight area not limit wall with this backlight module is adjacent, and the light source that is provided is subjected to all influences adjacent or light source that other backlight area provided,
Wherein determine the step of at least one described first penalty coefficient of this each pixel correspondence to comprise:
Dividing described a plurality of pixel is one first pixel group, one second pixel group and one the 3rd pixel group, wherein
One side wall of adjacent this frame of each pixel of this first pixel group, and be positioned at edge and adjacent another backlight area of single backlight area,
The both sides wall of adjacent this frame of each pixel of this second pixel group, and be positioned at the corner of single backlight area and not adjacent with other backlight area, and
Each pixel of the 3rd pixel group is not adjacent with any limit wall, and this first pixel group and this second pixel group surround the 3rd pixel group.
2. the compensation method of pixel data as claimed in claim 1,
Wherein the number of pairing at least one described first penalty coefficient of each pixel in this first pixel group is 2.
3. the compensation method of pixel data as claimed in claim 1, wherein the number of pairing at least one described first penalty coefficient of each pixel in this second pixel group is 1.
4. the compensation method of pixel data as claimed in claim 1, wherein the number of pairing at least one described first penalty coefficient of each pixel in the 3rd pixel group is 4.
5. the compensation method of pixel data as claimed in claim 1, wherein this calculating comprises interpolation calculating at least.
6. time schedule controller comprises:
One compensating unit, its through configuration with:
According to the position of a plurality of backlight area in the backlight module, determine first penalty coefficient of each backlight area;
With respect to interactional mode between the position of described a plurality of backlight area and each backlight area, determine at least one first penalty coefficient of this each pixel correspondence according to each pixel in the display panel;
According at least one described first penalty coefficient of this each pixel correspondence, carry out one and calculate and obtain second penalty coefficient of this each pixel; And
According to this second penalty coefficient of this each pixel, the pixel data to each pixel compensates respectively,
Wherein this backlight module has a frame that is made of four limit walls, and interactional mode comprises between described a plurality of backlight area:
The light source that single backlight area provided is not subjected to the influence of the light source that other backlight area provide;
Single backlight area is near the single limit wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in three limits are provided;
Single backlight area is near the both sides wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in both sides are provided; And
The single backlight area not limit wall with this backlight module is adjacent, and the light source that is provided is subjected to all influences adjacent or light source that other backlight area provided,
Wherein determine the step of at least one described first penalty coefficient of this each pixel correspondence to comprise:
Dividing described a plurality of pixel is one first pixel group, one second pixel group and one the 3rd pixel group, wherein
One side wall of adjacent this frame of each pixel of this first pixel group, and be positioned at edge and adjacent another backlight area of single backlight area,
The both sides wall of adjacent this frame of each pixel of this second pixel group, and be positioned at the corner of single backlight area and not adjacent with other backlight area, and
Each pixel of the 3rd pixel group is not adjacent with any limit wall, and this first pixel group and this second pixel group surround the 3rd pixel group.
7. time schedule controller as claimed in claim 6,
Wherein the number of pairing at least one described first penalty coefficient of each pixel in this first pixel group is 2.
8. time schedule controller as claimed in claim 6, wherein the number of pairing at least one described first penalty coefficient of each pixel in this second pixel group is 1.
9. time schedule controller as claimed in claim 6, wherein the number of pairing at least one described first penalty coefficient of each pixel in the 3rd pixel group is 4.
10. time schedule controller as claimed in claim 6, wherein this calculating comprises interpolation calculating at least.
11. a LCD comprises:
One display panel has a plurality of pixels of arranging with matrix-style;
One backlight module has a plurality of backlight area, in order to provide this display panel required backlight; And
Time schedule controller comprises a compensating unit, this compensating unit through configuration with:
According to the position of described a plurality of backlight area, determine first penalty coefficient of each backlight area;
With respect to interactional mode between the position of described a plurality of backlight area and each backlight area, determine at least one first penalty coefficient of this each pixel correspondence according to each pixel;
According at least one described first penalty coefficient of this each pixel correspondence, carry out one and calculate and obtain second penalty coefficient of this each pixel; And
According to this second penalty coefficient of this each pixel, the pixel data to each pixel compensates respectively,
Wherein this backlight module has a frame that is made of four limit walls, and interactional mode comprises between described a plurality of backlight area:
The light source that single backlight area provided is not subjected to the influence of the light source that other backlight area provide;
Single backlight area is near the single limit wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in three limits are provided;
Single backlight area is near the both sides wall of this backlight module, and the light source that is provided is subjected to the influence of the light source that other adjacent backlight area in both sides are provided; And
The single backlight area not limit wall with this backlight module is adjacent, and the light source that is provided is subjected to all influences adjacent or light source that other backlight area provided,
Wherein determine the step of at least one described first penalty coefficient of this each pixel correspondence to comprise:
Dividing described a plurality of pixel is one first pixel group, one second pixel group and one the 3rd pixel group, wherein
One side wall of adjacent this frame of each pixel of this first pixel group, and be positioned at edge and adjacent another backlight area of single backlight area,
The both sides wall of adjacent this frame of each pixel of this second pixel group, and be positioned at the corner of single backlight area and not adjacent with other backlight area, and
Each pixel of the 3rd pixel group is not adjacent with any limit wall, and this first pixel group and this second pixel group surround the 3rd pixel group.
12. LCD as claimed in claim 11,
Wherein the number of pairing at least one described first penalty coefficient of each pixel in this first pixel group is 2.
13. LCD as claimed in claim 11, wherein the number of pairing at least one described first penalty coefficient of each pixel in this second pixel group is 1.
14. LCD as claimed in claim 11, wherein the number of pairing at least one described first penalty coefficient of each pixel in the 3rd pixel group is 4.
15. LCD as claimed in claim 11, wherein this calculating comprises interpolation calculating at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101790016A CN101667389B (en) | 2009-10-09 | 2009-10-09 | Compensation method of pixel data, time sequence controller and liquid crystal display (LCD) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102447815B (en) * | 2010-10-09 | 2014-01-01 | 中兴通讯股份有限公司 | Video image processing method and device |
| TWI439996B (en) * | 2011-05-10 | 2014-06-01 | Au Optronics Corp | Method for adjusting a backlight of a display device and device thereof |
| CN103165081B (en) * | 2011-12-19 | 2015-12-02 | Tcl光电科技(惠州)有限公司 | LED-backlit module and dynamic light adjustment method thereof |
| CN103295553B (en) * | 2013-06-26 | 2015-02-18 | 青岛海信信芯科技有限公司 | Direct type backlight luminance compensation method and display device |
| KR102285391B1 (en) * | 2015-02-09 | 2021-08-04 | 삼성디스플레이 주식회사 | Display apparatus and method of driving the same |
| CN106448576B (en) * | 2016-11-28 | 2019-08-30 | 京东方科技集团股份有限公司 | The driving method of mosaic screen and the driving device of mosaic screen |
| CN108564887B (en) * | 2018-04-17 | 2020-08-14 | 武汉天马微电子有限公司 | Display panel and display device |
| CN108831386B (en) | 2018-06-27 | 2020-06-30 | 京东方科技集团股份有限公司 | Backlight module and control method thereof, tiled display device and backlight control method thereof, and display module |
| CN111788626B (en) * | 2018-07-27 | 2022-03-29 | 深圳市柔宇科技股份有限公司 | Display panel and display panel image data compensation method |
| CN109064987A (en) * | 2018-08-31 | 2018-12-21 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device with the liquid crystal display panel |
| CN109119033B (en) * | 2018-10-17 | 2021-04-09 | 深圳Tcl新技术有限公司 | Backlight compensation method, device, system and storage medium |
| CN111383604B (en) * | 2018-12-27 | 2021-10-01 | 深圳Tcl新技术有限公司 | Method, system and storage medium for improving regional dimming algorithm |
| CN110197635B (en) * | 2019-06-04 | 2022-08-12 | 厦门天马微电子有限公司 | Display device, driving method thereof and electronic equipment |
| CN110619854B (en) * | 2019-09-24 | 2021-01-05 | 厦门天马微电子有限公司 | Brightness adjusting method of display module and display device |
| CN110930919B (en) * | 2019-11-20 | 2023-04-21 | 豪威触控与显示科技(深圳)有限公司 | Image processing method and display driving device |
| CN113129846B (en) * | 2021-04-13 | 2022-08-09 | 北京显芯科技有限公司 | Backlight control method, device, system and storage medium |
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