CN103258508A - Liquid crystal display driving method and display device - Google Patents
Liquid crystal display driving method and display device Download PDFInfo
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- CN103258508A CN103258508A CN2012100352092A CN201210035209A CN103258508A CN 103258508 A CN103258508 A CN 103258508A CN 2012100352092 A CN2012100352092 A CN 2012100352092A CN 201210035209 A CN201210035209 A CN 201210035209A CN 103258508 A CN103258508 A CN 103258508A
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Abstract
The invention discloses a driving method for a displayer. The method includes the steps that a first image data corresponding to one frame of the displayer is received, and the first image data is composed of a plurality of picture frames; a first picture frame and a second picture frame which are adjacent in the picture frames are obtained; a plurality of secondary picture frames are computed according to the first picture frame and the second picture frame; the brightness of at least one of the secondary picture frames is adjusted, and therefore the average brightness of the secondary picture frames is lower than that of the picture frames; the secondary picture frames are sequentially inserted between the first picture frame and the second picture frame, and therefore a second image data is obtained; the displayer is driven according to the second image data.
Description
Technical field
The present invention relates to a kind of display drive method and related display apparatus, relate in particular to a kind of sub-picture frame by the different brightness combinations of insertion, make a LCD have preferable dynamic display effect and driving method and the related display apparatus of low power consumption.
Background technology
Generally speaking, (Liquid Crystal Display LCD) in the Driving technique of display, can promote the display quality of dynamic menu by increasing turnover rate (frame rate), and reduce the phenomenon of dynamic ghost (motion blur) at liquid crystal.Yet the turnover rate that improves picture will increase the power consumption of display.Therefore, known technology proposes to insert the method for black picture (black frame insertion) in dynamic menu, to reduce the problem of power consumption.Yet, behind the insertion black surround, the shortcoming that will cause display brightness to reduce.
Please refer to Figure 1A-1C, Figure 1A-1C is the synoptic diagram of the image data of known displays.Shown in Figure 1A, image data 100 is made up of a plurality of picture frame F1-Fn, and turnover rate is the image data 100 of 60Hz originally, can improve turnover rate by distinct methods, to strengthen its dynamic display effect.At first, as shown in Figure 1B, can be by between the adjacent frames (as Fk, F (k+1)) of Figure 1A, inserting the subgraph frame (as Fk_1, Fk_2, Fk_3) that three calculations get, obtaining the image data 102 that a turnover rate is 240Hz, but will consume the demonstration power of four times of driving methods that are higher than Figure 1A.Then, shown in Fig. 1 C, also can insert three black pictures between the adjacent frames of the 60Hz of Figure 1A, be the image data 104 of 240Hz to obtain with the turnover rate, however its picture brightness will only be Figure 1A image data 100 1/4th.
Therefore, how to improve the driving method of known display device, solve to insert the problem that picture frame causes brightness to reduce, take into account the consumption of power simultaneously again, become one of target that industry makes great efforts.
Summary of the invention
Therefore, the invention provides a kind of method for driving liquid crystal display and related display apparatus, be used in the image data of a display, insert the subgraph frame of different brightness combinations, to improve its dynamic display effect and consumed power.
The present invention discloses a kind of driving method for a display, comprises reception corresponding to one first image data of a picture of this display, and this first image data is made up of a plurality of picture frame; Obtain one first adjacent in these a plurality of picture frames picture frame and one second picture frame; According to this first picture frame and this second picture frame, calculate a plurality of subgraph frames; Adjust the brightness of at least one subgraph frame in these a plurality of subgraph frames, make the mean flow rate of these a plurality of subgraph frames be lower than the mean flow rate of these a plurality of picture frames; Should insert in regular turn between this first picture frame and this second picture frame by a plurality of subgraph frames, to obtain one second image data; And according to this second image data, drive this display.
The present invention also discloses a kind of drive unit for a display, comprises a receiving element, is used for receiving one first image data corresponding to a picture of this display, and this first image data is made up of a plurality of picture frame; One computing unit is used for obtaining one first adjacent in these a plurality of picture frames picture frame and one second picture frame, and according to this first picture frame and this second picture frame, calculates a plurality of subgraph frames; One adjustment unit, be used for adjusting the brightness of at least one subgraph frame in these a plurality of subgraph frames, make the mean flow rate of these a plurality of subgraph frames be lower than the mean flow rate of these a plurality of picture frames, and should insert in regular turn between this first picture frame and this second picture frame by a plurality of subgraph frames, to obtain one second image data; And a driver element, be used for driving this display according to this second image data.
Cooperate detailed description and claims of following diagram, embodiment at this, will on address other purpose of the present invention and advantage and be specified in after.
Description of drawings
Figure 1A-1C is the synoptic diagram of the image data of a known displays.
Fig. 2 is the synoptic diagram that the embodiment of the invention one drives flow process.
Fig. 3 A-3F is the synoptic diagram of embodiment of the invention different driving method.
Fig. 4 A-4F is the synoptic diagram of embodiment of the invention different driving method.
Fig. 5 A-5D is the synoptic diagram of embodiment of the invention different driving method.
Fig. 6 is the synoptic diagram of the embodiment of the invention one display.
Wherein, description of reference numerals is as follows:
20 flow processs
100-104,300-310,400-410,500-506 image data
Fk, F (k+1), F (k+2), (k+3) picture frame
Fk_1, Fk_2, Fk_3, F (k+1) _ 1, F (k+1) _ 2, F (k+1) _ 3, subgraph frame
F(k+2)_1、F(k+2)_2、F(k+2)_3
The R redness
The G green
The B blueness
60 displays
600 display panels
602 source electrode drivers
604 gate pole drivers
606 driver elements
608 picture frame storage elements
610 picture frame computing units
612 picture frame adjustment units
DRV_S, DRV_G drive signal
Embodiment
Please refer to Fig. 2, Fig. 2 is the synoptic diagram of a display driver flow process 20 of the embodiment of the invention.Display driver flow process 20 is applied among the display DISP, and may further comprise the steps:
Step 200: beginning.
Step 202: receive the first image data IMG1 corresponding to the picture of display DISP, the first image data IMG1 is made up of a plurality of picture frame F1-Fn.
Step 204: obtain one first adjacent among a plurality of picture frame F1-Fn picture frame Fk and one second picture frame Fk+1.
Step 206: according to the first picture frame Fk and the second picture frame Fk+1, calculate a plurality of subgraph frame Fk_1-Fk_n.
Step 208: adjust the brightness of at least one subgraph frame among a plurality of subgraph frame Fk_1-Fk_n, make the mean flow rate of a plurality of subgraph frame Fk_1-Fk_n be lower than the mean flow rate of a plurality of picture frame F1-Fn.
Step 210: a plurality of subgraph frame Fk_1-Fk_n are inserted between the first picture frame Fk and the second picture frame Fk+1 in regular turn, to obtain one second image data IMG2.
Step 212: according to the second image data IMG2, driving display DISP.
Step 214: finish.
According to flow process 20, the present invention can insert the subgraph frame Fk_1-Fk_n that adjusts through brightness between each adjacent frames of the image data IMG1 of display DISP, to obtain the image data IMG2 that another has higher turnover rate (frame rate).Be different from known technology, the method that flow process 20 antithetical phrase picture frame Fk_1-Fk_n carry out the brightness adjustment is not limited to insert black surround (black frame), and can insert the subgraph frame of suitable brightness combination, with dynamic effect and the driving power thereof of taking into account display DISP.In brief, the driving method of known displays only can select to insert the picture frame of full brightness or full black surround improving turnover rate and to strengthen the dynamic effect of display, so there is the too high or brightness of power consumption to cross shortcomings such as low.In comparison, insert the subgraph frame (as a plurality of subgraph frame Fk_1-Fk_n) of different brightness combinations between the adjacent frames (as the first picture frame Fk and the second picture frame Fk+1) of the image data IMG1 that driving flow process 20 of the present invention can be passed through at display DISP, dynamically to average out between display effect, driving power and the display brightness.
Specifically, the image data IMG1 that obtains in step 202 one has the image data of low turnover rate, and it is made up of a plurality of picture frame F1-Fn.In other words, display DISP shows a plurality of picture frame F1-Fn in regular turn with this turnover rate.Then, in step 204, be in a plurality of picture frame F1-Fn, to select the first adjacent picture frame Fk and the second picture frame Fk+1, and by step 206, according to the first picture frame Fk and the second picture frame Fk+1, calculate a plurality of subgraph frame Fk_1-Fk_n that need assign between Fk, Fk+1 two picture frames, to improve dynamic effect and the turnover rate of image data IMG1.Calculate the method for a plurality of subgraph frame Fk_1-Fk_n, can get according to known dynamic interpolation (motion interpolation) scheduling algorithm, it is known in the art, so do not give unnecessary details at this.Then, in step 208, can suitably adjust the brightness of a plurality of subgraph frame Fk_1-Fk_n according to different embodiments of the invention, make it present different brightness permutation and combination, to meet different application.At last, in step 210, the a plurality of subgraph frame Fk_1-Fk_n that calculate out are assigned back between the adjacent first picture frame Fk and the second picture frame Fk+1, have preferable dynamic effect, the image data IMG2 of Gao Gengxin rate more to obtain comparing image data IMG1, and in step 212, utilize image data IMG2 driving display DISP.
For example, please refer to Fig. 3 A, Fig. 3 A is the synoptic diagram of handling an image data 300 according to display driver flow process 20.Image data 300 is by the image data 100 shown in Figure 1A, inserts a plurality of subgraph frames and gets.Be example with n=3 at this, that is turnover rate is will insert 3 sub-picture frames between each adjacent frames in the image data 100 of 60Hz originally, to obtain the image data 300 that turnover rate is increased to 240Hz.As shown in Figure 3A, Fk, F (k+1), F (k+2) and F (k+3) are the picture frames for four continuous adjacent in the image data 100, and according to display driver flow process 20 of the present invention, can between picture frame Fk, F (k+1), insert three sub-picture frames such as Fk_1, Fk_2, Fk_3, between picture frame F (k+1), F (k+2), insert F (k+1) _ 1, F (k+1) _ 2, F three sub-picture frames such as (k+1) _ 3, and between picture frame F (k+2), F (k+3), insert F (k+2) _ 1, F (k+2) _ 2, F three sub-picture frames such as (k+2) _ 3.
Then, in the present embodiment, the mode of adjusting the subgraph frame is that the picture of subgraph frame is for a change formed, and panchromatic by originally having (R, G, B three primary colors) picture changes the single colour cell composition that only the has former picture frame picture of (as the red composition of tool only) into.In other words, three sub-picture frames such as Fk_1, the Fk_2 that inserts between picture frame Fk, the F (k+1), Fk_3 are to be the sprite of red (R), green (G) and blue (B) in regular turn.In like manner, three sub-picture frames such as F (k+1) _ 1, F (k+1) _ 2, F (k+1) _ 3 and F (k+2) _ 1, F (k+2) _ 2, F three sub-picture frames such as (k+2) _ 3 are the sprite of red, green, blue respectively in regular turn also.Because picture frame Fk, F (k+1), F (k+2) and F (k+3) in the image data 100 are the full color views that Red Green Blue is formed by stacking, so monochromatic subgraph frame (as the monochromatic subgraph frame Fk_1 of redness) is for display DISP, with the driving power that only consumes 1/3.Therefore, be similarly the image data of turnover rate 240Hz, image data 300 will have the dynamic effect of the image data 102 of similar Figure 1B, but image data 300 is only to be (1+3 * 1/3) with the consumed power ratio of image data 102: (1 * 4)=1: 2, that is image data 300 only consumes a half-power of image data 102.Simultaneously, the image data 104 of Fig. 1 C will be (1+3 * 0) with the display brightness ratio of image data 300: (1+3 * 1/3)=1: 2, that is image data 300 will exceed the brightness of twice than the image data 104 behind the black plug.
Be noted that the type of drive of the image data 300 shown in Fig. 3 A only is an embodiment, those skilled in the art can do suitable adjustment to the type of drive of image data 300, to meet the demand of different application.In another embodiment, can adjust the brightness of subgraph frame, be brightness permutation and combination arbitrarily, take into account dynamic effect and driving power as long as can reach, get final product to be used for different application.Further, Fig. 3 B to 3F, Fig. 4 A to 4F, and Fig. 5 A to 5D be the synoptic diagram of different embodiments of the invention.Specifically, Fig. 3 A to 3F arranges the image data that gets for the difference between monochromatic picture frame, black picture frame and the panchromatic picture frame, Fig. 4 A to 4F is that the difference between double-colored picture frame, black picture frame and the panchromatic picture frame is arranged the image data that gets, and Fig. 5 A to 5D arranges the image data that gets for the difference between monochromatic picture frame, double-colored picture frame, black picture frame and the panchromatic picture frame.
Specifically, please refer to Fig. 3 B, it is the synoptic diagram of handling an image data 302 according to display driver flow process 20, and image data 302 only inserts a monochromatic picture frame between every adjacent frames, and residue fills with black surround, and alternately inserts trichromatic picture frame.Shown in Fig. 3 B, between picture frame Fk and F (k+1), can select subgraph frame Fk_1, Fk_2 and Fk_3 one of them (as picture frame Fk_2) as monochromatic picture frame (as the red composition of tool only), all the other Fk_1 and Fk_3 then fill with black surround.Similarly, subgraph frame F (k+1) _ 2 and subgraph frame F (k+2) _ 2 can be respectively green and blue monochromatic subgraph frame, and all the other subgraph frame F (k+1) _ 1, F (k+1) _ 3, F (k+2) _ 1 and F (k+2) _ 3 then fill with black surround.Therefore, be similarly the image data of turnover rate 240Hz, image data 302 will have the dynamic effect of the image data 102 of similar Figure 1B, but image data 302 will more be reduced to (1+1/3) with the consumed power ratio of image data 102: (1 * 4)=1: 3, that is image data 302 only consumes 1/3rd power of image data 102.Simultaneously, the image data 104 of Fig. 1 C will be (1+3 * 0) with the display brightness ratio of image data 302: (1+1/3)=3: 4, that is image data 302 will exceed about 1.33 times brightness than the image data 104 behind the black plug.Similarly, the different image data of Fig. 3 C to 3F all has the dynamic effect better than the image data 100 of Figure 1A, simultaneously more save driving power than the image data 104 of Fig. 1 C again, and provide in various degree dynamic effect and the type of drive between the driving power, in order to different application.
Further, please refer to Fig. 4 A, it is the synoptic diagram of handling an image data 400 according to display driver flow process 20, and image data 400 is to insert the double-colored picture frame (for example R+G, G+B, R+B) that three three looks replace between every adjacent frames in regular turn.Perhaps, shown in the image data 402 of Fig. 4 B, between picture frame Fk and F (k+1), can select subgraph frame Fk_1, Fk_2 and Fk_3 one of them (as picture frame Fk_2) as double-colored picture frame (as R+G), all the other Fk_1 and Fk_3 then fill with black surround, again with subgraph frame F (k+1) _ 2 and subgraph frame F (k+2) _ 2 all the other possible double-colored picture frames of rotating in regular turn.Similarly, the different image data of Fig. 4 C to 4F all has the dynamic effect better than the image data 100 of Figure 1A, simultaneously more save driving power than the image data 104 of Fig. 1 C again, and the type of drive of the balance between the dynamic effect and driving power in various degree is provided, in order to different application.
On the other hand, please refer to Fig. 5 A, it is the synoptic diagram of handling an image data 500 according to display driver flow process 20, image data 500 is to insert the double-colored picture frame (for example R+G, R+B) that two three looks replace between every adjacent frames in regular turn, and a monochromatic picture frame (for example B), and between 60Hz, do conversion.Similarly, the different image data of Fig. 5 A to 5D all has the dynamic effect better than the image data 100 of Figure 1A, simultaneously more save driving power than the image data 104 of Fig. 1 C again, and the type of drive of the balance between the dynamic effect and driving power in various degree is provided, in order to different application.
About the realization of the corresponding flow process 20 of tone, can be with reference to figure 6, Fig. 6 is the synoptic diagram of the embodiment of the invention one display 60.Display 60 comprises a display panels 600, one source pole driver 602, a gate pole driver 604 and a driver element 606.Driver element 606 comprises a picture frame storage element 608, a picture frame computing unit 610 and a picture frame adjustment unit 612, and can distinguish output drive signal DRV_S, DRV_G to gate pole driver 604 and driver element 606, show an image data to drive display panel 600.Specifically, picture frame storage element 608 can receive and store n picture frame F1-Fn (not shown) earlier, and picture frame computing unit 610 can calculate between the adjacent frames of picture frame F1-Fn to insert how many subgraph frames respectively according to different application, and which kind of brightness combination each subgraph frame (for example: monochromatic picture frame should present, the combination of double-colored picture frame or black picture frame), and picture frame adjustment unit 612 just can produce appropriate driving signal DRV_S according to this, DRV_G is to gate pole driver 604 and driver element 606, to drive display panel 600 with a specific turnover rate, show the image data after a brightness is adjusted, it can have good dynamic perfromance, driving power and display brightness.About the running of display 60, can repeat no more with reference to the narration of above-mentioned flow process 20.
Be noted that spirit of the present invention is visual application in the image data and inserts the subgraph frame of different brightness combinations.For example, the different driving mode of the embodiment of the invention is capable of being combined to be used in same display, is not limited to independent application.In addition, display also can have different display modes, under the high-effect pattern when the need high brightness, can select to insert panchromatic picture frame or the double-colored picture frame (as image data 400) of higher proportion, and when needing under low display brightness or the lower powered battery saving mode, can select to insert monochromatic picture frame or the black surround (as image data 302) of higher proportion.In addition, also can decide the number that inserts picture frame according to the turnover rate of desire operation, only respectively insert a sub-picture frame (n=1) as the adjacent frames at the image data of 60Hz, then the turnover rate of the image data of 60Hz can be increased to 120Hz.In addition, in the present invention, the brightness of subgraph frame combination is to have the red composition that is evenly distributed, green composition and a blue composition, avoiding showing aberration, but not subject to the limits.Also can painstakingly make the brightness combination of subgraph frame present unequal the distribution (as the red picture frame with higher proportion), reaching different display effects, as different-colour etc.
In sum, only can select to insert the picture frame of full brightness or full black surround to improve turnover rate and to strengthen the dynamic effect of display compared to known display drive method, and there is the too high or brightness of power consumption to cross shortcomings such as low, driving method of the present invention can be by inserting the subgraph frame of different brightness combinations, dynamically to average out between display effect, driving power and the display brightness between the adjacent frames of display.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. driving method that is used for a display comprises:
Reception is corresponding to one first image data of a picture of this display, and this first image data is made up of a plurality of picture frame;
Obtain one first adjacent in these a plurality of picture frames picture frame and one second picture frame;
According to this first picture frame and this second picture frame, calculate a plurality of subgraph frames;
Adjust the brightness of at least one subgraph frame in these a plurality of subgraph frames, make the mean flow rate of these a plurality of subgraph frames be lower than the mean flow rate of these a plurality of picture frames;
Should insert in regular turn between this first picture frame and this second picture frame by a plurality of subgraph frames, to obtain one second image data; And
According to this second image data, drive this display.
2. driving method as claimed in claim 1 is characterized in that, adjusts the brightness of at least one subgraph frame in these a plurality of subgraph frames, makes the mean flow rate of these a plurality of subgraph frames be lower than the step of the mean flow rate of these a plurality of picture frames, comprising:
Remove at least one component color in this at least one subgraph frame respectively.
3. driving method as claimed in claim 1 is characterized in that, adjusts the brightness of at least one subgraph frame in these a plurality of subgraph frames, makes the mean flow rate of these a plurality of subgraph frames be lower than the step of the mean flow rate of these a plurality of picture frames, comprising:
With at least one black surround, replace this at least one subgraph frame.
4. driving method as claimed in claim 1 is characterized in that, the component color of each picture frame is and is evenly distributed in this second image data.
5. driving method as claimed in claim 1 is characterized in that, these a plurality of picture frames are made up of red, blue, green three looks respectively.
6. drive unit that is used for a display comprises:
One receiving element is used for receiving one first image data corresponding to a picture of this display, and this first image data is made up of a plurality of picture frame;
One computing unit is used for obtaining one first adjacent in these a plurality of picture frames picture frame and one second picture frame, and according to this first picture frame and this second picture frame, calculates a plurality of subgraph frames;
One adjustment unit, be used for adjusting the brightness of at least one subgraph frame in these a plurality of subgraph frames, make the mean flow rate of these a plurality of subgraph frames be lower than the mean flow rate of these a plurality of picture frames, and should insert in regular turn between this first picture frame and this second picture frame by a plurality of subgraph frames, to obtain one second image data; And
One driver element is used for driving this display according to this second image data.
7. drive unit as claimed in claim 6 is characterized in that, this adjustment unit is at least one component color of removing respectively in this at least one subgraph frame, to adjust the brightness of this at least one subgraph frame in these a plurality of subgraph frames.
8. drive unit as claimed in claim 6 is characterized in that, this adjustment unit is with at least one black surround, replaces this at least one subgraph frame, to adjust the brightness of this at least one subgraph frame in these a plurality of subgraph frames.
9. drive unit as claimed in claim 6 is characterized in that, the component color of each picture frame is and is evenly distributed in this second image data.
10. drive unit as claimed in claim 6 is characterized in that, these a plurality of picture frames are made up of red, blue, green three looks respectively.
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| CN201210035209.2A CN103258508B (en) | 2012-02-16 | 2012-02-16 | Method for driving liquid crystal display and display device |
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| CN201210035209.2A CN103258508B (en) | 2012-02-16 | 2012-02-16 | Method for driving liquid crystal display and display device |
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| CN107424571A (en) * | 2017-08-31 | 2017-12-01 | 北京集创北方科技股份有限公司 | Organic LED display device and its driving method |
| TWI736029B (en) * | 2019-11-25 | 2021-08-11 | 敦泰電子股份有限公司 | Driving method for display in low frame rate mode |
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| CN103258508B (en) | 2015-09-16 |
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