CN102467865A - Method for preventing flat-panel display from screen burn - Google Patents
Method for preventing flat-panel display from screen burn Download PDFInfo
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- CN102467865A CN102467865A CN2010105538811A CN201010553881A CN102467865A CN 102467865 A CN102467865 A CN 102467865A CN 2010105538811 A CN2010105538811 A CN 2010105538811A CN 201010553881 A CN201010553881 A CN 201010553881A CN 102467865 A CN102467865 A CN 102467865A
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Abstract
The invention provides a method for preventing a flat-panel display from screen burn, which is suitable for the technical field of flat panel display. The method comprises a step A of circularly moving a picture displayed on the flat-panel display in a valid image area. Through the technical scheme disclosed by the invention, the junction of a highlight area and a lowlight area on the flat-panel display is also circularly moved along the picture according to a certain period and avoided to be fixed at a certain position of the flat-panel display so as to avoid shadows, thereby solving the problem of shadows on the flat-panel display.
Description
Technical field
The invention belongs to the display technique field, relate in particular to a kind of flat-panel monitor that prevents and burn the method for screen.
Background technology
Flat-panel monitor has become the demonstration product of main flow, like panel TV set.Existing flat-panel monitor comprises LCD display (LCD) and PDP display (plasma display).
Existing TV programme signal adopts the signal of 4:3 form more; Mostly the length breadth ratio of LCD display and PDP display is 16: 9 ratio; Ratio is 16: 9 LCD display and a PDP display when under the display mode of 4:3, working, and the both sides of display screen will not have image, and the program picture only shows in the display screen centre position; Time can cause display screen the right and left to show that the boundary vestige is obvious after having grown; In addition, after use PDP display watched the Pgmtime of same TV station to grow, the shutdown back obvious marks occurred in TV station's station symbol demonstration place.More than these two kinds of phenomenons all be called " burn screen " and (Burn-in), be called " ghost " again.
The principle of work of PDP display screen is: adopt high voltage to make inert gas produce plasma and the impact fluorescence powder luminous.The high-intensity bombardment of long-time continuous can make fluorescent powder wear out and the reduction luminescence efficiency, so that produce the phenomenon that preceding text are mentioned.
The principle of work of LCD display is: add that electric field makes it produce deflection for the liquid crystal molecule, and the deflection angle that different voltages with different is corresponding different, the size of deflection angle has determined transit dose backlight.For energy-conservation; Most of LCD screens are designed at not alive situation lower back light transmission maximum; And full voltage makes liquid crystal molecule produce after the wide-angle deflection printing opacity hardly; Be LCD screen full the deflection of black part liquid crystal molecule is maximum, for a long time maximum angle deflection cause tired and inertia cause with around the characteristic of liquid crystal molecule inconsistent so that the phenomenon that the generation preceding text are mentioned.
Though LCD is different with the displaying principle of PDP display,, all can produce tangible transition vestige at the intersection of highlight regions and low bright area if a high bright or low bright overlong time in fixing zone is arranged.
Therefore, need a kind of technical scheme, to solve the above problems.
Summary of the invention
The object of the present invention is to provide a kind of flat-panel monitor that prevents to burn the method for screen, be intended to solve the problem that flat-panel monitor burns screen.
The present invention is achieved in that a kind of flat-panel monitor that prevents burns the method for screen, and described method comprises:
Picture displayed circulates in effective image-region and moves on A, the flat-panel monitor.
More specifically, wherein steps A specifically comprises:
A1, every at a distance from a chronomere, said flat-panel monitor picture displayed circulates mobile in effective image-region to the right/left according to each translation unit.
More specifically, wherein steps A 1 specifically comprises:
The timing cycle of A11, timer is set to said chronomere, starts timer and picks up counting, and when said timer timing cycle expired, said panel display picture displayed was to translation unit of right translation; Steps A 11 repeats N time;
A12, the timing cycle of said timer is set to said chronomere again, starts timer and picks up counting, and when said timer timing cycle expired, said panel display picture displayed was to translation unit of left; Steps A 12 repeats 2N time;
A13, commentaries on classics steps A 11.
More specifically, wherein N is a natural number.
More specifically; Described translation unit is a pixel; Said panel display picture displayed is that the value of the reference position Hstar parameter through effective image-region on horizontal direction adds 1 and realizes to translation unit of right translation, and said panel display picture displayed is that the value of the reference position Hstar parameter through effective image-region on horizontal direction subtracts 1 and realizes to translation unit of left.
More specifically, wherein steps A specifically comprises:
A1, every at a distance from a chronomere, said flat-panel monitor picture displayed in effective image-region according to each translation unit downward/move to cocycle.
More specifically, wherein steps A 1 specifically comprises:
The timing cycle of A11, timer is set to said chronomere, and start timer and pick up counting, when said timer timing cycle expires, translation unit of the downward translation of said panel display picture displayed; Steps A 11 repeats N time;
A12, the timing cycle of said timer is set to said chronomere again, and start timer and pick up counting, when said timer timing cycle expires, the said panel display picture displayed translation unit of translation that makes progress; Steps A 12 repeats 2N time;
A13, commentaries on classics steps A 11.
More specifically, wherein N is a natural number.
More specifically; Described translation unit is row; Translation unit of the downward translation of said panel display picture displayed adds 1 through the value with the reference position Vstar parameter of effective image-region on the vertical direction to realize, the said panel display picture displayed translation unit of translation that makes progress subtracts 1 through the value with the reference position Vstar parameter of effective image-region on the vertical direction to realize.
More specifically, said flat-panel monitor is a LCD display, and said chronomere is 2 minutes; Perhaps, said flat-panel monitor is the PDP display, and said chronomere is 30 seconds.
The present invention overcomes the deficiency of prior art; Provide a kind of flat-panel monitor that prevents to burn the method for screen: to be controlled at that picture displayed moves according to certain loop cycle on the panel display screen; The intersection of highlight regions and low bright area also moves according to the some cycles circulation on the flat-panel monitor; Avoid highlight regions and low bright area intersection fixed dwell in some positions of panel display screen, thereby avoid the generation of " ghost " phenomenon.Technical scheme provided by the invention makes that the intersection of highlight regions and low bright area also moves with the picture circulation according to some cycles on the flat-panel monitor; Avoid highlight regions and low bright area intersection fixed dwell some positions at panel display screen; Thereby avoid the generation of " ghost " phenomenon, solved the problem of flat-panel monitor " ghost ".
Description of drawings
Fig. 1 is the picture synoptic diagram that circulation is moved about on the panel display screen of the embodiment of the invention;
Fig. 2 is the television image size and the display position parameter declaration of the embodiment of the invention;
Fig. 3 is an embodiment of the invention process flow diagram.
Embodiment
Technical scheme provided by the invention is: be controlled at that picture displayed moves according to certain loop cycle on the flat-panel monitor; The intersection of highlight regions and low bright area also moves with the picture circulation according to some cycles on the flat-panel monitor; Avoid highlight regions and low bright area intersection fixed dwell in some positions of panel display screen, thereby avoid the generation of " ghost " phenomenon.
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Concrete when realizing technical scheme provided by the invention, can control picture on the flat-panel monitor according to certain cycle about/round-robin moves around up and down, the distance that moves is a principle with the integrality that does not influence picture.When showing the signal of 4:3 form for the panel display screen of 16:9; Display screen the right and left all has bigger blank screen zone; Therefore; Can control the mobile certain distance of circulation about picture fully, in some positions of panel display screen, avoid " burning screen " phenomenon with highlight regions and low bright area intersection fixed dwell on the minimizing panel display screen.
The synoptic diagram that Fig. 1 is picture circulation is moved about on the panel display screen; The initial position that picture shows is in the middle of display screen, and the zone that (0 '-0) is illustrated among Fig. 1 is after this zone stops 1 t of chronomere; Picture from then on position begins to right translation, and a translation unit moves right; Arrive the zone of being illustrated like (1 '-1) among Fig. 1, stop 1 t of chronomere after, again to translation unit of right translation; Arrive (2 '-2) zone of meaning as shown in fig. 1, stop 1 t of chronomere.After this, picture begins to be moved to the left, and to translation unit of left, arrives the zone of being illustrated like (1 '-1) among Fig. 1; After stopping 1 t of chronomere, again to translation unit of left; After turning back to 1 t of chronomere of zone stop that (0 '-0) is illustrated among Fig. 1, to translation unit of left; Arrive the zone of being illustrated like (3 '-3) among Fig. 1, stop 1 t of chronomere again after, to translation unit of left; Arrive the zone of being illustrated like (4 '-4) among Fig. 1, stop the t of chronomere.After this, picture begins to right translation, at first arrives the zone of being illustrated like (3 '-3) among Fig. 1, stop 1 t of chronomere again after, to translation unit of right translation; Get back to initial position, stop 1 t of chronomere again; Continue then to move right, repeat above-mentioned process.Moving process can reduce following table 1:
| Move order | The region | The residence time (t) | Moving direction | Remarks |
| 0 | (0’-0) | 1 | Right | Move a translation unit after stopping 1t |
| 1 | (1’-1) | 1 | Right | Move a translation unit after stopping 1t |
| 2 | (2’-2) | 1 | A left side | Move a translation unit after stopping 1t |
| 3 | (1’-1) | 1 | A left side | Move a translation unit after stopping 1t |
| 4 | (0’-0) | 1 | A left side | Move a translation unit after stopping 1t |
| 5 | (3’-3) | 1 | A left side | Move a translation unit after stopping 1t |
| 6 | (4’-4) | 1 | Right | Move a translation unit after stopping 1t |
| 7 | (3’-3) | 1 | Right | Accomplish one after this time moving and be circulated back to initial position |
| 8 | (0’-0) |
Table 1
Can know that from table 1 in above-mentioned one-period (8t), the time of each high bright demonstration in zone of panel display screen is as shown in table 2:
| The zone | The time of high bright demonstration |
| 2’-4 | 8t |
| 1’-2’/4-3 | 7t |
| 0’-1’/3-0 | 5t |
| 3’-1’/0-1 | 3t |
| 4’-3’/1-2 | 1t |
Table 2
In the above-mentioned flow process, the translation unit during pan can set as required, like a pixel; The t of chronomere that picture stops also can set as required, as for LCD display, can the value of t be established more greatly; As 2 minutes; And to the PDP display screen, should establish t a little bit smaller, as 30 seconds.In circulation left or the number of times that moves right be not limited to above-mentioned twice (two translation units), also can be once or repeatedly, as long as do not influence the integrality of picture after moving.
As shown in Figure 2 in the picture signal of television system rear end generally speaking; Wherein the zone in the thick lines frame can be regarded as the size of display screen; Be effective picture signal viewing area (AP is the picture material that spectators saw, comprises the black or the monochromatic areas of the right and left when the 4:3 image shows on the 16:9 screen).In addition, the zone of the hachure frame outside the thick lines frame is blanking zone (blanking signal that AP is upper and lower, forward and backward).Wherein:
Hsize: the pixel count of effective image-region delegation;
Vsize: the line number of effective image-region;
HStar: the reference position of effective image-region on the horizontal direction is a unit with the pixel;
VStar: the reference position of effective image-region on the vertical direction, with behavior unit;
HTotal: image (comprising AP and front and back blanking part) the total pixel count of delegation;
VTotal: total line number of image (comprising AP and front and back blanking part).
The relation of above parameter is:
HTotal?＞HStar+HSize，
HTotal-(HStar+HSize)=horizontal direction final blanking width (is unit with the pixel);
VTotal ＞VStar+VSize。
VTotal-(VStar+VSize)=vertical direction final blanking height (with behavior unit);
Explanation for ease, the resolution of suppose display screen are 1920 * 1080 and are example with demonstration high-definition image 1080P that then each parameter can be set to:
Hsize＝1920；
Vsize＝1080；
HStar＝100；
VStar＝12；
HTotal＝2200；
VTotal＝1100；
Concrete when realizing technical scheme provided by the invention, every at a distance from a t of chronomere, the value of Parameter H Star is added 1/ subtracts 1, each elementary area in the effective image-region all to the right/being moved to the left one shows as digital display.Timing cycle that can timer is set to t; When timing cycle expires; To add 1 to the value of dependent variable with HStar, then that this variable is new numerical value is write the HStar register of flat-panel monitor output processing module, the effective image-region pixel that just moves right; Reset timer and pick up counting for move AP next time simultaneously, when timing cycle expires, will add 1 to the value of dependent variable, repeat above-mentioned process with HStar; Need HStar be subtracted 1 to the value of dependent variable when being moved to the left, it realizes that principle is identical.
In like manner; Every at a distance from a t of chronomere; The value of V parameter Star is added 1/ subtracts 1, each elementary area in the effective image-region all downwards/delegation that moves up shows that the circulation repeated moving of effective image-region has also caused moving of TV station's station symbol; Can avoid TV station's station symbol a certain fixed position on display screen to stop, thereby avoid " burning screen " phenomenon.
Embodiment of the invention process flow diagram (is example with left and right sides translation) as shown in Figure 3 comprises the steps:
1, when the flat-panel monitor picture displayed was in regional that (0 '-0) is illustrated among Fig. 1, the timer timing cycle was set to t, started timer and picked up counting;
When 2, the timer timing cycle expires, will add the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable with HStar, the picture pixel that moves right arrives the zone that (1 '-1) is illustrated among Fig. 1;
3, reset timer and picking up counting; When the timer timing cycle expires; To add the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable with HStar, the picture pixel that moves right arrives the zone that (2 '-2) are illustrated among Fig. 1;
4, reset timer and picking up counting; When the timer timing cycle expires; To subtract the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable with HStar, picture is moved to the left a pixel, arrives the zone that (1 '-1) is illustrated among Fig. 1;
5, reset timer and picking up counting; When the timer timing cycle expires; To subtract the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable with HStar, picture is moved to the left a pixel, arrives the zone that (0 '-0) is illustrated among Fig. 1;
6, reset timer and picking up counting; When the timer timing cycle expires; To subtract the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable with HStar, picture is moved to the left a pixel, arrives the zone that (3 '-3) are illustrated among Fig. 1;
7, reset timer and picking up counting; When the timer timing cycle expires; To subtract the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable with HStar, picture is moved to the left a pixel, arrives the zone that (4 '-4) are illustrated among Fig. 1;
8, reset timer and picking up counting; When the timer timing cycle expires; To add the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable with HStar, picture is moved to the left a pixel, arrives the zone that (3 '-3) are illustrated among Fig. 1;
9, reset timer and picking up counting; When the timer timing cycle expires, will add the HStar register of writing the flat-panel monitor output processing module after 1 to the value of dependent variable, the picture pixel that moves right with HStar; Arrive the zone that (0 '-0) is illustrated among Fig. 1, change step 1;
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. one kind prevents that flat-panel monitor from burning the method for screen, and described method comprises:
Picture displayed circulates in effective image-region and moves on A, the flat-panel monitor.
2. method according to claim 1 is characterized in that wherein steps A specifically comprises:
A1, every at a distance from a chronomere, said flat-panel monitor picture displayed circulates mobile in effective image-region to the right/left according to each translation unit.
3. method according to claim 2 is characterized in that, wherein steps A 1 specifically comprises:
The timing cycle of A11, timer is set to said chronomere, starts timer and picks up counting, and when said timer timing cycle expired, said panel display picture displayed was to translation unit of right translation; Steps A 11 repeats N time;
A12, the timing cycle of said timer is set to said chronomere again, starts timer and picks up counting, and when said timer timing cycle expired, said panel display picture displayed was to translation unit of left; Steps A 12 repeats 2N time;
A13, commentaries on classics steps A 11.
4. method according to claim 3 is characterized in that, wherein N is a natural number.
5. method according to claim 3; It is characterized in that; Described translation unit is a pixel; Said panel display picture displayed is that the value of the reference position Hstar parameter through effective image-region on horizontal direction adds 1 and realizes to translation unit of right translation, and said panel display picture displayed is that the value of the reference position Hstar parameter through effective image-region on horizontal direction subtracts 1 and realizes to translation unit of left.
6. method according to claim 1 is characterized in that wherein steps A specifically comprises:
A1, every at a distance from a chronomere, said flat-panel monitor picture displayed in effective image-region according to each translation unit downward/move to cocycle.
7. method according to claim 6 is characterized in that, wherein steps A 1 specifically comprises:
The timing cycle of A11, timer is set to said chronomere, and start timer and pick up counting, when said timer timing cycle expires, translation unit of the downward translation of said panel display picture displayed; Steps A 11 repeats N time;
A12, the timing cycle of said timer is set to said chronomere again, and start timer and pick up counting, when said timer timing cycle expires, the said panel display picture displayed translation unit of translation that makes progress; Steps A 12 repeats 2N time;
A13, commentaries on classics steps A 11.
8. method according to claim 7 is characterized in that, wherein N is a natural number.
9. method according to claim 7; It is characterized in that; Described translation unit is row; Translation unit of the downward translation of said panel display picture displayed adds 1 through the value with the reference position Vstar parameter of effective image-region on the vertical direction to realize, the said panel display picture displayed translation unit of translation that makes progress subtracts 1 through the value with the reference position Vstar parameter of effective image-region on the vertical direction to realize.
10. according to claim 2 or 6 described methods, it is characterized in that said flat-panel monitor is a LCD display, said chronomere is 2 minutes; Perhaps, said flat-panel monitor is the PDP display, and said chronomere is 30 seconds.
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| CN110196704A (en) * | 2019-05-21 | 2019-09-03 | 深圳市华星光电半导体显示技术有限公司 | A kind of display control method and device |
| CN110349539A (en) * | 2019-06-24 | 2019-10-18 | 深圳市华星光电半导体显示技术有限公司 | A kind of display driving method of display panel, display panel and display device |
| WO2020258526A1 (en) * | 2019-06-24 | 2020-12-30 | 深圳市华星光电半导体显示技术有限公司 | Display driving method for display panel, display panel and display device |
| CN111564139A (en) * | 2020-06-12 | 2020-08-21 | 芯颖科技有限公司 | Display control method, driving circuit, chip and electronic equipment |
| CN112435633A (en) * | 2020-11-27 | 2021-03-02 | 福州京东方光电科技有限公司 | Display method, computer storage medium and display device |
| CN112435633B (en) * | 2020-11-27 | 2022-07-29 | 福州京东方光电科技有限公司 | Display method, computer storage medium and display device |
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Application publication date: 20120523 |