CN101620834B - Thin film transistor liquid crystal display (LCD) anti-stigma protection method - Google Patents
Thin film transistor liquid crystal display (LCD) anti-stigma protection method Download PDFInfo
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- CN101620834B CN101620834B CN2008103025344A CN200810302534A CN101620834B CN 101620834 B CN101620834 B CN 101620834B CN 2008103025344 A CN2008103025344 A CN 2008103025344A CN 200810302534 A CN200810302534 A CN 200810302534A CN 101620834 B CN101620834 B CN 101620834B
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Abstract
The present invention discloses a thin film transistor liquid crystal display (LCD) anti-stigma protection method, and mainly provides a display control board to be connected with input signal of a thin film transistor liquid crystal display (TFT LCD). The display control board detects whether the timing of the input signal changes or not through a micro control unit; if the timing does not change in preset time, imaging pixel displayed on the TFT LCD is controlled to change so as to lead the liquid crystal shape of the TFT LCD to be changed; the TFT LCD can be protected from generating image stigma by changing the liquid crystal pixel shapes caused by light and dark, moving and the like.
Description
Technical field:
The present invention relates to a kind of anti-branding guard method, refer to a kind of anti-branding guard method that is applied to Thin Film Transistor-LCD especially.
Background technology:
The display screen that the most widely uses is Thin Film Transistor-LCD (TFT LCD) on the market.The TFT-LCD panel can be considered two sheet glass substrate sandwich one deck liquid crystal, and the glass substrate on upper strata is to combine with colored filter (Color Filter), and the glass of lower floor then has transistor to be embedded in.When electric current produces electric field change by transistor, cause liquid crystal deflecting element, use the deflection polarity that changes light, utilize the light and shade state of polaroid decision picture element (Pixel) again.In addition, upper strata glass forms each picture element (Pixel) and respectively comprises red bluish-green three colors because of fitting with colored filter, and these picture elements that send red bluish-green color have just constituted the image frame on the panel.
Yet TFT LCD is to have utilized change in voltage control liquid crystal molecule to produce image frame in use, when resting on an image for a long time, can produce the problem of image branding (Image Sticking).For example, when panel is used as the display screen of surveillance, be easy to produce the image branding in the position of cut-off rule.Again for example, when panel being used as the display screen of radar detecting, also be easy to produce the image branding on some fixed spots positions, this will cause wrongheaded danger.
Generally doing the method for image branding protection (Image Sticking protect) at present, is that whether judgment data changes (as working voltage detecting or the like) or alternate manner reaches the branding protection.
Summary of the invention:
Technical matters to be solved by this invention is: at above-mentioned the deficiencies in the prior art, provide a kind of thin film transistor liquid crystal display (LCD) anti-stigma protection method, but the protective film transistor liquid crystal display (TFT-LCD) can not produce the image branding.
In order to solve the problems of the technologies described above; the technical solution adopted in the present invention is: a kind of thin film transistor liquid crystal display (LCD) anti-stigma protection method; mainly providing a display control board is connected with the input signal of a Thin Film Transistor-LCD; whether this display control board changes with the sequential of micro-control unit detecting input signal; if to setting-up time, do not change; then controlling the image picture element that shows on this Thin Film Transistor-LCD changes; make the liquid crystal alteration of form of this Thin Film Transistor-LCD; by bright dark and move to wait and cause liquid crystal picture element body to change, reach this Thin Film Transistor-LCD of protection and can not produce the image branding.
Thin film transistor liquid crystal display (LCD) anti-stigma protection method provided by the present invention wherein makes the image picture element of demonstration shift gears, and the move mode of face, the move mode of line and the move mode of point can be arranged.
Described input signal is D-sub 15 inputs, DVI input or the image input of personal computer.
The liquid crystal that shows on this Thin Film Transistor-LCD of described control moves to the whole image data and does right upper left down mobile.
Described the moving of controlling the liquid crystal picture element activation of wire that shows on this Thin Film Transistor-LCD is the displacement of whole image picture element activation of wire.
Control the described displacement of moving of the liquid crystal picture element activation point that shows on this Thin Film Transistor-LCD to whole image picture element activation point.
So; change by controlling the image picture element that shows on this Thin Film Transistor-LCD; make the liquid crystal alteration of form of this Thin Film Transistor-LCD, by bright dark and move to wait and cause liquid crystal picture element body to change, but the protective film transistor liquid crystal display (TFT-LCD) can not produce the image branding.
Below, the characteristics and the function of the inventive method will be described in detail according to the embodiment shown in the drawing.
Description of drawings:
Fig. 1 is an Organization Chart of the present invention.
Fig. 2 is a process flow diagram of the present invention.
Fig. 3 is the process flow diagram of decision A mode among the present invention.
Fig. 4 is the process flow diagram of decision B mode among the present invention.
Fig. 5 is the process flow diagram of decision C mode among the present invention.
Label declaration:
Image-zooming processor 12 Thin Film Transistor-LCDs 2
Embodiment:
See also Fig. 1; the present invention is a thin film transistor liquid crystal display (LCD) anti-stigma protection method; one display control board 1 (Display Control Board) mainly is provided; this display control board 1 has an image-zooming processor 12 (Scaler), and is connected with the input signal of a Thin Film Transistor-LCD 2.And this Thin Film Transistor-LCD 2 has time schedule controller (Timing Controller) 21, it can accept the LVDS signal that the signal disposable plates is sent here, transfer RSDS, PPDS, mini--LVDS etc. at last to and drive source driver, gate driver, also comprise functions such as gamma correction.1 of this display control board is with micro-control unit a 11 (Micro-Controller Unit; MCU) whether the sequential (Timing) of detecting input signal changes; if to setting-up time, do not change; for example 8 hours; then controlling the image picture element that shows on this Thin Film Transistor-LCD 2 changes; make the liquid crystal alteration of form of Thin Film Transistor-LCD; by bright dark and move to wait and cause liquid crystal picture element body to change, reach the protective film transistor liquid crystal display (TFT-LCD) and can not produce the image branding.
The input signal of display control board 1 of the present invention can be D-sub 15 inputs, DVI input or image (Video) input of personal computer or controls the display signal of version input through demonstration.
Shown the program flow diagram of the micro-control unit 11 of display control board 1 of the present invention in Fig. 2, initially monitored at Qi Shihou, but to be sequential set for it, when timing equaled 0 after 8 hours, and Disable equals 1; If Disable equals at 0 o'clock, then timing in 8 hours action.Is decision to move with A, B or that a kind of mode of C earlier, and judges that time series pattern changes in this program? does on-screen keyboard change? does and Disable equal 0? finish then.
As between 8 hours, when the sequential of input signal does not change, then can start image branding program (A, B, mode among the C).
Moving expression " mode of face " in decision in the A mode, referring to shown in Figure 3, is that TFT LCD display picture data is done right upper left moving down, reaches picture data to be changed and liquid crystal activates, and allows liquid crystal avoid producing image and brands.Picture data is back to the center with picture data after doing right upper left down mobile.
Move expression " mode of line " in decision in the B mode, referring to shown in Figure 4, with horizontal scanning and vertical scan line mode, reach from top to bottom left-to-right mode scan 2 times～repeatedly, and can change simultaneously the color of sweep trace and different scanning directions, allow liquid crystal do in various degree activation, and can do different adjustment according to the difference of liquid crystal kind, reach the purpose of optimal activation.
Move expression " mode of point " in decision in the C mode, referring to shown in Figure 5, be to do horizontal scanning with point, when a horizon scan line is finished, then toward next bar sweep trace scanning, all points up to TFT LCD Panel full screen are finished whole been scanned, avoid the generation of image branding to reach the liquid crystal activation; Do in the mode of point and to avoid branding to produce, be a kind of traceless protected mode, and still can accomplish to reach different adjustment, reach the purpose of optimal activation in the mode that changes color.Because this is in the mode of point protection and be not easy to be discovered, so can starting for a long time, this mode protects, can be described as best mode (seamless Protection Code).
In sum, the present invention can reach TFT LCD really and prevent that the image branding from producing, and then increases the service life.The Chen Ming that wants is, more than graphic only be better embodiment of the present invention, but do not limit claim of the present invention with this.In every case simple change or the equivalence conversion of being done according to the technology of the present invention thought still belongs among the scope of patent protection of the present invention.
Claims (5)
1. thin film transistor liquid crystal display (LCD) anti-stigma protection method; it is characterized in that: mainly provide a display control board and be connected with the input signal of a Thin Film Transistor-LCD; whether this display control board changes with the sequential of micro-control unit detecting input signal; if to setting-up time, do not change; then controlling the image picture element that shows on this Thin Film Transistor-LCD changes; make the liquid crystal alteration of form of this Thin Film Transistor-LCD; change by the bright dark and mobile liquid crystal picture element body that causes, reach this Thin Film Transistor-LCD of protection and can not produce the image branding.
2. thin film transistor liquid crystal display (LCD) anti-stigma protection method as claimed in claim 1 is characterized in that: described input signal is D-sub 15 inputs, DVI input or the image input of personal computer.
3. thin film transistor liquid crystal display (LCD) anti-stigma protection method as claimed in claim 1 is characterized in that: the liquid crystal that shows on this Thin Film Transistor-LCD of described control moves to the whole image data and does right upper left down mobile.
4. thin film transistor liquid crystal display (LCD) anti-stigma protection method as claimed in claim 1 is characterized in that: described the moving of controlling the liquid crystal picture element activation of wire that shows on this Thin Film Transistor-LCD is the displacement of whole image picture element activation of wire.
5. thin film transistor liquid crystal display (LCD) anti-stigma protection method as claimed in claim 1 is characterized in that: control the described displacement of moving to whole image picture element activation point of the liquid crystal picture element activation point that shows on this Thin Film Transistor-LCD.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008103025344A CN101620834B (en) | 2008-07-04 | 2008-07-04 | Thin film transistor liquid crystal display (LCD) anti-stigma protection method |
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| CN2008103025344A CN101620834B (en) | 2008-07-04 | 2008-07-04 | Thin film transistor liquid crystal display (LCD) anti-stigma protection method |
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| CN101620834A CN101620834A (en) | 2010-01-06 |
| CN101620834B true CN101620834B (en) | 2011-11-16 |
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| CN111831197B (en) * | 2019-04-18 | 2021-10-29 | 奇景光电股份有限公司 | Positioning input system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001230971A (en) * | 2000-02-15 | 2001-08-24 | Canon Inc | Device and method for processing image |
| CN1774735A (en) * | 2003-02-20 | 2006-05-17 | 索尼株式会社 | Image signal processing apparatus and processing method, and image display apparatus using the same |
| JP2006285065A (en) * | 2005-04-04 | 2006-10-19 | Matsushita Electric Ind Co Ltd | Display device protection apparatus |
| KR20070062836A (en) * | 2005-12-13 | 2007-06-18 | 삼성전자주식회사 | Circuit for and method of preventing image sticking in lcd module |
| KR20070099967A (en) * | 2006-04-06 | 2007-10-10 | 엘지전자 주식회사 | Plasma display apparatus |
-
2008
- 2008-07-04 CN CN2008103025344A patent/CN101620834B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001230971A (en) * | 2000-02-15 | 2001-08-24 | Canon Inc | Device and method for processing image |
| CN1774735A (en) * | 2003-02-20 | 2006-05-17 | 索尼株式会社 | Image signal processing apparatus and processing method, and image display apparatus using the same |
| JP2006285065A (en) * | 2005-04-04 | 2006-10-19 | Matsushita Electric Ind Co Ltd | Display device protection apparatus |
| KR20070062836A (en) * | 2005-12-13 | 2007-06-18 | 삼성전자주식회사 | Circuit for and method of preventing image sticking in lcd module |
| KR20070099967A (en) * | 2006-04-06 | 2007-10-10 | 엘지전자 주식회사 | Plasma display apparatus |
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Application publication date: 20100106 Assignee: Rainbow Europe Trading (Shanghai) Co., Ltd. Assignor: AG Neovo Technology Corporation Contract record no.: 2014990000859 Denomination of invention: Thin film transistor liquid crystal display (LCD) anti-stigma protection method Granted publication date: 20111116 License type: Common License Record date: 20141113 |
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