CN100461842C - Image display device and its image preventing method - Google Patents
Image display device and its image preventing method Download PDFInfo
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- CN100461842C CN100461842C CNB2006100947308A CN200610094730A CN100461842C CN 100461842 C CN100461842 C CN 100461842C CN B2006100947308 A CNB2006100947308 A CN B2006100947308A CN 200610094730 A CN200610094730 A CN 200610094730A CN 100461842 C CN100461842 C CN 100461842C
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000014759 maintenance of location Effects 0.000 claims abstract description 31
- 230000006866 deterioration Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/66—Transforming electric information into light information
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Disclosed is An image display device and image retention preventing method thereof. The device of the invention comprises: an image processor for converting the image signal format into an proper one to display; a display driving part for outputting a driving signal to drive the display based on the image signal of the image processor; a display for displaying an image according to the driving signal of the display driving part; a keyboard inputting part for inputting an instruction according to the user's requisition; a store part for storing the instruction inputted by the keyboard inputting part and preventing the image retention on the display; also a control part for controlling the brightness of single discharge cells by display driving part if still images above the preset time are displayed on the display, wherein the discharge cells are disposed in the preset block units on the display.
Description
Technical field
The present invention will be referred at image display; Especially will be referred to a kind of image display and image preventing method thereof that the rest image image retention prevents that be suitable for.
Background technology
After color TV is play, in a part of field, as stereo system, remote control, captions broadcasting, a part of digital technology has been admitted in fields such as data broadcasting; Arrived the nineties,, also begun to pursue, can be used for realizing the high image quality of TV and the Digital Television of multifunction in broadcast world along with developing by leaps and bounds more of computer and network technologies.
Broadcasting is the popular multimedia towards masses; If will change digital form into, so all key elements such as image, sound equipment, data etc. all must be managed by numerical data, therefore, just can follow to the data of computer compress like that, can go to compress, thus can be highly beneficial.
And, utilize a present channel just can transmit the program of HDTV (high definition TV) and the program more than 3 of SDTV (standard definition television); Simultaneously, can also transmit and processing signal with numeral, thereby can view and admire picture more clearly.
In addition, electric wave is by after the barrier reflection, and the ghost phenomena of appearance also can solve by self; On the HDTV channel, also can watch the picture that is imbued with presence and the stereo system that watch in can only be at the cinema in the family.
This broadcasting is used for satisfying the LCD (LCD TV) and the PDP TV of high image quality/large-screen demand in addition except the most widely used CRT (cathode ray tube) television set usually.
Especially PDP TV, on its structure and characteristic, with existing CRT TV comparison, that can make is quite thin, compare with the LCD TV simultaneously, have outstanding light characteristic, can satisfy technical conditions as television set, and, on layout characteristics such as metope installation, very outstanding again, thus as follow-on television set, favored.
But with regard to the industry product, if remove to show rest image or specific literal for a long time, when going back handlebar wide cut picture and setting 4:3 for and show for a long time, the LCD product group will stay long image retention at the position on border; With regard to the such product group of PDP, also image retention can take place, also can cause the deterioration of discharge cells when serious, thereby cause fatal damage to product sometimes.
In order to prevent this image retention or degradation phenomena, a kind of typical method is maximum in one centimeter scope, by the chronomere that is set, allow whole image along left and right directions or above-below direction, clockwise direction or counter clockwise direction move.
But this in order to prevent the phenomenon of image retention or deterioration, the method that allows whole image move changes responsive looking the hearer to those to picture, exists the uncomfortable problem that causes.
In addition, the PDP TV is in constituting each discharge cells of picture, charge into specific gas, and comes display image to the mode that it provides high voltage to make its discharge.In this PDP TV, on the physical characteristic of display panel, when the same signal (voltage) more than the certain hour is provided, discharge cells self will be magnetized; When blackout of importing to discharge cells or variation, it will keep former image, perhaps produces unusual electric discharge phenomena, can cause image retention or misplace electric phenomenon.
In this case, in order to reduce the phenomenon that image retention occurs or misplace electricity, make about whole image or above-below direction moves, and remove to change input signal; Yet, in this case,, exist the problem that reduces the audiovisual sense of looking the hearer because picture carries out the motion of moment.
Summary of the invention
The present invention provides a kind of image display and image preventing method thereof, its purpose to be to provide a kind of rest image is prevented image retention in order to solve the problems of the technologies described above.
To achieve the above object, the present invention will provide the image display with following architectural feature, be made of following structure: be provided with an image processing part, it will be processed into a form that is suitable for display part to picture signal; Be provided with a display driver portion, it will go to export a drive signal, so that allow display part drive according to the picture signal from image processing part output; Be provided with a display part, it will show corresponding image according to the drive signal of display driver portion; Be provided with the keyboard input part of input customer requirements instruction; Be provided with a storage part, it will store the requirement instruction by the keyboard input part input, and the data that are used for preventing damaged picture on display part; Be provided with a control part, if at the display part rest image of display setting more than the time that get on, so, it will be by display driver portion, to indivedual discharge cells brightness control, wherein, above-mentioned indivedual discharge cells are positioned at a plurality of block units that are set on the display part.
The described data that are used for preventing damaged picture, be relevant display part block unit number and to the luminance control data of the discharge cells in each block unit.
Described luminance control data means the discharge cells in the block unit, before causing image retention because of the time of rest image or deterioration takes place, allow more than voltage on the discharge cells will change once at least.
The image preventing method of image display, if on display part, show that rest image surpasses the time that is set, so, the display part is being slit under the state of a plurality of virtual displaying blocks, to a plurality of discharge cells in a plurality of, by the chronomere that is set, go to regulate its brightness successively with respectively.
Described brightness regulation to each discharge cells is proportional with the number of the size of display part and piece, and to the discharge cells in the block unit, may takes place before the image retention because of showing rest image, allow the voltage on all discharge cells change.
The variation of described voltage will be adopted reduction, or improve, or turn-off a kind of in the voltage of discharge cells.
The image preventing method of image display is made of following step: be provided with one in the display part of display image, carry out the step that image retention prevents pattern; Be provided with one and get on to show a plurality of steps with virtual displaying block of horizontal and vertical lines at display part; Remove to select some in the virtual displaying block, the step of so just removing to store selecteed virtual displaying block if be provided with one; On the display part rest image is being carried out demonstration more than the setting-up time if be provided with one, so,, will go to regulate the step of their brightness successively each discharge cells in the stored virtual displaying block unit.
Image display of the present invention and image preventing method thereof will have following effect, that is:
The one, is along with the brightness of rest image changes, the user do not recognize during in, go to change the brightness of pixel with block unit, thereby can remove to prevent the image retention that causes because of rest image.
The 2nd, is according to user's inclination or to very sensitive user, owing to can go to specify the virtual displaying block that is fit to me, thereby can go to satisfy individual user's demand.
Description of drawings
Fig. 1 is an image display block diagram of the present invention.
Fig. 2 is an example that is used for preventing a plurality of virtual displaying blocks of damaged picture at image display of the present invention.
Fig. 3 is another example that is used for preventing a plurality of virtual displaying blocks of damaged picture at image display of the present invention.
Fig. 4 is the flow chart of the image display image preventing method of first example of the present invention.
Fig. 5 is the flow chart that prevents the displaying block establishing method of image retention for image display of the present invention.
Fig. 6 is the flow chart of the image display image preventing method of second example of the present invention.
The symbol description of＜accompanying drawing major part 〉
10: the image input part; 20: image processing part;
30: buffer-stored portion; 40: display driver portion;
50: display part; 60: keyboard input part;
70: storage part; 80: the screen display handling part;
90: control part.
Embodiment
Image display of the present invention is described with reference to the accompanying drawings and prevents the method for image retention.
Fig. 1 is an image display block diagram of the present invention; Fig. 2 is the example that image display of the present invention is used for preventing a plurality of virtual displaying blocks of damaged picture; Fig. 3 is another example that image display of the present invention is used for preventing a plurality of virtual displaying blocks of damaged picture.
Image display of the present invention, by image input part 10, image processing part 20, buffer-stored portion 30, display driver portion 40, display part 50, keyboard input part 60, storage part 70, screen display handling part 80, control part 90 waits and constitutes.
Buffer-stored portion 30 will be the image from 10 outputs of image input part that unit stores with the frame.
Wherein, be used for preventing the data of damaged picture, will comprise display part 50 is divided into the number of block unit of a plurality of virtual displaying blocks and the optimal brightness control command (data) of each discharge cells in each block unit.
In other words, the data of control brightness are, because demonstration time of rest image and before might causing image retention or deterioration, to the voltage on each discharge cells in each block unit, to change once at least more than.
Screen display handling part 80 is to be used for preventing the built-in menu of damaged picture and will to handle in order to demonstrate in screen display portion 50.
This image display of the present invention in order to prevent the image retention of picture, will be divided into a plurality of virtual displaying blocks to display part, and carry out the brilliance control of discharge cells with the block unit that is divided.
For this reason, as Fig. 2 or shown in Figure 3, to be divided into a plurality of of matrix form to display part 50, and to a plurality of discharge cells in each block unit, at least with a pixel and by the chronomere that is set, its brightness will be lower than or will be higher than normal brightness, so as to preventing the image retention of picture.
For this reason, go to control the voltage strength that discharge cells is provided, can also remove to turn-off the voltage that is provided to discharge cells.
Wherein, the time of shutoff, perhaps reduce or provide time of voltage, all will with the module of the LCD of formation display part, or the number composition of the size of PDP module and piece.
In addition, the number of the size of module and piece also can increase in proportion; And according to on-the-spot test, to the discharge cells in the block unit, may take place before the image retention because of showing rest image, allow voltage on all discharge cells change (perhaps low, perhaps high, as perhaps to turn-off).
Fig. 4 is the flow chart of the image display image preventing method of first example of the present invention.
The image display image preventing method of first example of the present invention is when the power supply of opening image display (S10), just with display image (S20).
So control part 30 will go to judge whether showing rest image (S30).
The result (S30) who judges if showing rest image, so, will go to have judged whether to surpass the time (S40) that is set.
The result (S40) who judges has surpassed the time that is set if show the time of rest image, so, just display part is divided into many virtual displaying blocks, and to adjust brightness (S50) in the block unit that is set and with the discharge cells unit that sets.At this moment, as also once illustrating in front, the change in voltage on the pixel (perhaps low, perhaps high, perhaps turn-off) number of times, at least will be once more than.At this moment, in a block unit, all discharge cells in the block unit may cause before image retention or the deterioration because of rest image, and the change frequency of voltage at least will be more than once.
Fig. 5 is in order to illustrate that image display image retention of the present invention prevents a flow chart of displaying block establishing method.
Image retention of the present invention prevents to use the piece establishing method, is under the state of rest image, when of the present invention when preventing image retention with the change in voltage of each discharge cells of block unit, in order to allow different users go to set a kind of method of different block sizes.
For this reason, under the state of opening power (S110) and display image (S120), go to judge whether to have selected image retention whether to prevent pattern (S130).
The result (S130) who judges if selected image retention to prevent pattern, so, just removes to be presented at the many vertical lines and the horizontal line of the matrix form of dividing on the display part, so that remove to demonstrate the display part (S140) that is divided into many virtual displaying blocks.At this moment, for example in Fig. 2 or Fig. 3, seen like that,, show just block unit by horizontal line and vertical line with the form of screen display.
Then, for the user can be gone to select, will be user's selection requirement, show (S150) with the form of screen display.
Remove to store the block unit of selecting by the user (S160) then.
Fig. 6 is the flow chart for the image display image preventing method that second example of the present invention is described.
The image display image preventing method of second example of the present invention is, when the power supply of opening image display (S210), just with display image (S220).
So control part 30 will go to judge whether showing rest image (S230).
The result (S230) who judges if showing rest image, so, will go to have judged whether to surpass the time (S240) that is set.
The result (S240) who judges has surpassed the time that is set if show the time of rest image, so, with in the block unit that is set and the discharge cells unit to set, goes to adjust brightness (S250) during optimized.Wherein, mean to the discharge cells in the block unit during the so-called optimization, may cause before image retention or the deterioration that just allow the voltage of discharge cells change, change frequency at least will be more than once because of rest image.
The present invention is limited at above-mentioned example; From additional claim scope as can be known, can be out of shape by the personage with common knowledge who belongs to field of the present invention, this distortion will belong to scope of the present invention.
Claims (5)
1. image display is characterized in that being made of following structure:
Be provided with an image processing part, it will be processed into a form that is suitable for display part to picture signal;
Be provided with a display driver portion, it will go to export a drive signal, so that allow display part drive according to the picture signal from image processing part output;
Be provided with a display part, it will show corresponding image according to the drive signal of display driver portion;
Be provided with the keyboard input part of input customer requirements instruction;
Be provided with a storage part, it will store the requirement instruction by the keyboard input part input, and the data that are used for preventing damaged picture on display part;
Be provided with a control part, if at the display part rest image of display setting more than the time that get on, so, it will be by display driver portion, to indivedual discharge cells brightness control, wherein, above-mentioned indivedual discharge cells are positioned at a plurality of block units that are set on the display part;
The described data that are used for preventing damaged picture, be relevant display part block unit number and to the luminance control data of the discharge cells in each block unit.
2. image display according to claim 1, it is characterized in that described luminance control data, mean the discharge cells in the block unit, before causing image retention because of the time of rest image or deterioration takes place, allow more than voltage on the discharge cells will change once at least.
3. the image preventing method of image display, it is characterized in that if on display part, show that rest image surpasses the time that is set, so, the display part is being slit under a plurality of virtual displaying blocks and the state in storage portion stores, to a plurality of discharge cells in stored a plurality of virtual displaying block units, to adjust brightness in the block unit that is set and with the discharge cells unit that sets; To the brightness regulation of each discharge cells, be proportional, and, may take place before the image retention because of showing rest image to the discharge cells in the block unit with the number of the size of display part and piece, allow the voltage on all discharge cells change.
4. the image preventing method of image display according to claim 3 is characterized in that the variation of voltage will be adopted reduction, or improves, or turn-offs a kind of in the voltage of discharge cells.
5. the image preventing method of image display is characterized in that being made of following step:
Be provided with one in the display part of display image, carry out the step that image retention prevents pattern;
Be provided with one and get on to show a plurality of steps with virtual displaying block of horizontal and vertical lines at display part;
Remove to select some in the virtual displaying block, the step of so just removing to store selecteed virtual displaying block if be provided with one;
On the display part rest image is being carried out demonstration more than the setting-up time if be provided with one, so,, will go to regulate the step of their brightness successively each discharge cells in the stored virtual displaying block unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050069534 | 2005-07-29 | ||
| KR1020050069534A KR100771614B1 (en) | 2005-07-29 | 2005-07-29 | Display device and method for preventing an afterimage thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1904998A CN1904998A (en) | 2007-01-31 |
| CN100461842C true CN100461842C (en) | 2009-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100947308A Expired - Fee Related CN100461842C (en) | 2005-07-29 | 2006-07-13 | Image display device and its image preventing method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100771614B1 (en) |
| CN (1) | CN100461842C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101441689B1 (en) * | 2008-04-18 | 2014-11-03 | 엘지전자 주식회사 | Method and apparatus for preventing an ocular spectrum of (a) screen of (an) image display device |
| KR102106556B1 (en) * | 2012-10-29 | 2020-05-06 | 엘지디스플레이 주식회사 | Timing controller, driving method thereof, and display device using the same |
| KR102111777B1 (en) | 2013-09-05 | 2020-05-18 | 삼성디스플레이 주식회사 | Image display and driving mehtod thereof |
| KR102132180B1 (en) * | 2013-12-09 | 2020-07-09 | 엘지디스플레이 주식회사 | The Controlling Method a Image in Stand-by Mode |
| EP3255627A4 (en) * | 2015-03-16 | 2018-02-21 | Huawei Technologies Co. Ltd. | Image display method and device |
| KR102330164B1 (en) * | 2017-06-08 | 2021-11-24 | 엘지전자 주식회사 | Digital signage and operating method thereof |
| KR102460922B1 (en) * | 2017-12-14 | 2022-11-01 | 엘지디스플레이 주식회사 | Display Device and Driving Method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07200656A (en) * | 1993-12-30 | 1995-08-04 | Casio Comput Co Ltd | Graphic output device |
| CN1419373A (en) * | 2001-11-14 | 2003-05-21 | 三星电子株式会社 | Device and method for attenuating brightness of plasma screen |
| CN1574925A (en) * | 2003-06-10 | 2005-02-02 | 株式会社日立制作所 | Image display device and method of displaying images with static image detection |
| JP2005062600A (en) * | 2003-08-18 | 2005-03-10 | Matsushita Electric Ind Co Ltd | Static image reproducing apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3449383B2 (en) * | 1995-03-09 | 2003-09-22 | 株式会社富士通ゼネラル | Plasma display device |
| JP4111738B2 (en) | 2002-04-15 | 2008-07-02 | 三洋電機株式会社 | Plasma display device |
| KR20050025805A (en) * | 2003-09-08 | 2005-03-14 | 삼성에스디아이 주식회사 | Method for minimizing lasting image sticking in plasma display panel and plasma display panel using the same |
| KR100637133B1 (en) * | 2003-10-15 | 2006-10-20 | 삼성에스디아이 주식회사 | Method and apparatus of preventing image sticking in plasma display panel |
-
2005
- 2005-07-29 KR KR1020050069534A patent/KR100771614B1/en active IP Right Grant
-
2006
- 2006-07-13 CN CNB2006100947308A patent/CN100461842C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07200656A (en) * | 1993-12-30 | 1995-08-04 | Casio Comput Co Ltd | Graphic output device |
| CN1419373A (en) * | 2001-11-14 | 2003-05-21 | 三星电子株式会社 | Device and method for attenuating brightness of plasma screen |
| CN1574925A (en) * | 2003-06-10 | 2005-02-02 | 株式会社日立制作所 | Image display device and method of displaying images with static image detection |
| JP2005062600A (en) * | 2003-08-18 | 2005-03-10 | Matsushita Electric Ind Co Ltd | Static image reproducing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1904998A (en) | 2007-01-31 |
| KR100771614B1 (en) | 2007-10-30 |
| KR20070014693A (en) | 2007-02-01 |
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