CN102305976B - Method for eliminating cross effect and liquid crystal display device - Google Patents
Method for eliminating cross effect and liquid crystal display device Download PDFInfo
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- CN102305976B CN102305976B CN 201110249976 CN201110249976A CN102305976B CN 102305976 B CN102305976 B CN 102305976B CN 201110249976 CN201110249976 CN 201110249976 CN 201110249976 A CN201110249976 A CN 201110249976A CN 102305976 B CN102305976 B CN 102305976B
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Abstract
The invention discloses a method for eliminating a cross effect and a liquid crystal display device, and belongs to the technical field of liquid crystal. A com line of a block code display part and a com line of a dot matrix display part of a liquid crystal display screen are separately driven, and a seg line of the block code display part and a seg line of the dot matrix display part of the liquid crystal display screen are separately driven. By the method, the bad phenomenon of the display cross effect can be effectively eliminated, and the problem of poor display effect of the liquid crystal display device is solved. The method is simple and practical and cannot increase the cost.
Description
Technical field
The present invention relates to liquid crystal display device, belong to technical field of liquid crystal display, refer to especially a kind of method and liquid crystal display device of eliminating cross effect.
Background technology
Under the dynamic driving mode, a certain liquid crystal pixel (selected element) be show effect be by be applied on column electrode selection voltage be applied to selection voltage on the row electrode synthesize realize.All be not in nonselection mode in the pixel (non-selected element) with delegation and same row with this pixel, all there is the voltage of selection to add with this pixel in the pixel with delegation or same row, be referred to as half selected element, when the voltage of electric field of this point is near the threshold voltage of liquid crystal, on screen, the unnecessary phenomenon that partly shows will appear, make the display comparison degree descend, this phenomenon just is called as cross effect.
The common liquid crystal display device that shows of segment encode and dot matrix, the segment encode viewing area is that the graphics area that dynamically shows or show is when larger, the dot matrix that is connected with segment encode causes the generation of cross effect with regard to easy appearance half show state, and the segment encode display part also half show state easily occurs and ghost occurs, cause the liquid crystal display display effect poor, give the uncomfortable sensation of people of watching.
Liquid crystal display device requires very strict for display effect, at present, solving the basic guiding theory of this type of liquid crystal display device cross effect problem is to use two integrated circuit (IC) to drive.But if two IC drive, price increases a lot, has also increased the difficulty of liquid crystal proportioning.
Summary of the invention
In view of this, the object of the invention is to propose a kind of method and liquid crystal display device of eliminating cross effect.
Based on above-mentioned purpose a kind of method of eliminating cross effect provided by the invention, it is characterized in that, comprising:
The com line of the com line of the segment encode display part of LCDs and dot matrix display part is separated driving, and the com line of described segment encode display part and dot matrix display part refers to the column electrode of segment encode display part and the dot matrix display part of LCDs;
The seg line of the seg line of the segment encode display part of LCDs and dot matrix display part is separated driving, and the seg line of described segment encode display part and dot matrix display part refers to the row electrode of segment encode display part and the dot matrix display part of LCDs.
Further, the method for described elimination cross effect is characterized in that, the seg line of segment encode and the com line of dot matrix have the point of crossing, the zone of described point of crossing outside the visible area window.
Further, the described part com line and the seg line that refer to IC of separately driving drives the segment encode part, and remaining com line and seg line drive the dot matrix part.
Further, make on seg line of IC or com line by cabling only to comprise single content, described single content refers to dot matrix or segment encode content.
Further, the position of described point of crossing is in the small pieces glass edge.
The present invention also provides a kind of liquid crystal display device of eliminating cross effect, it is characterized in that:
The com line of the segment encode display part of LCDs and the com line of dot matrix display part are connected respectively to the different com pins of drive IC, and the com line of described segment encode display part and dot matrix display part refers to the column electrode of segment encode display part and the dot matrix display part of LCDs; The seg line of the segment encode display part of LCDs and the seg line of dot matrix display part are connected respectively to the different seg pins of drive IC, and the seg line of described segment encode display part and dot matrix display part refers to the row electrode of segment encode display part and the dot matrix display part of LCDs.
Further, the com line of the seg line of described segment encode display part and described dot matrix display part has the point of crossing, the zone that the position of described point of crossing will be outside the visible area window.
Further, the part com line of described IC and seg line drive the segment encode part, and remaining com line and seg line drive the dot matrix part.
Further, only comprise single content on seg line of described IC or com line, described single content refers to dot matrix or segment encode content.
Further, the position of described point of crossing is in the small pieces glass edge.
As can be seen from above, a kind of method and liquid crystal display device of eliminating cross effect provided by the invention can effectively be eliminated the bad phenomenon that shows cross effect, solved the poor problem of liquid crystal display device display effect.The present invention is simple, practical and do not increase cost.
Description of drawings
Fig. 1 is prior art LCDs plane each several part position view;
Fig. 2 is LCDs seg line schematic diagram of the present invention;
Fig. 3 is LCDs com line schematic diagram of the present invention;
Fig. 4 is the whole cabling schematic diagram of LCDs of the present invention;
Fig. 5 is the whole cabling schematic diagram of conventional design LCDs in prior art;
In figure, each label is: 1, and the segment encode display graphics is regional; 2, the dot matrix display graphics is regional; 3, glass edge; 4, the visible area outer; 5, chip IC; 6, the small pieces glass edge; 7, the point of crossing;
Fig. 6 is the method flow schematic diagram that the present invention eliminates cross effect.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
The present invention is used for providing a kind of method of eliminating cross effect, and the method has the characteristics such as simple, effective.As shown in Figure 6, eliminate the method flow schematic diagram of cross effect for the present invention, the method comprises the steps:
In step 601, the com line of the com line of the segment encode display part of LCDs and dot matrix display part is separated driving, the com line of described segment encode display part and dot matrix display part refers to the column electrode of segment encode display part and the dot matrix display part of LCDs.
In step 602, the seg line of the seg line of the segment encode display part of LCDs and dot matrix display part is separated driving, the seg line of described segment encode display part and dot matrix display part refers to the row electrode of segment encode display part and the dot matrix display part of LCDs.
The described part com line and the seg line that refer to IC of separately driving drives the segment encode part, and remaining com line and seg line drive the dot matrix part.Select suitable IC to drive segment encode and dot matrix according to the situation of reality.Satisfy separately to drive and get final product.
In the present invention, segment encode and dot matrix content do not share same com line or seg line, can make on seg line of IC or com line by cabling only to comprise single content, described single content refers to dot matrix or segment encode content, and concrete annexation can be as Fig. 2～shown in Figure 4.
General COG class (COG, Chip On Glass, it is on glass to be that chip directly is bundled in, a kind of technique of making liquid crystal display device) the com line of IC is at the right and left, the seg line is at center section, so want to realize that the com line of segment encode and dot matrix and seg line separately drive, the com line of the seg line of segment encode and dot matrix will occur intersecting and cause the point of crossing when doing the LCD domain, the point of crossing will show when on row and column, electric field being arranged just as the point in dot matrix.The point of crossing is unnecessary displaying contents, should not be in VA (View area, visible area) district to occur, so the present invention accomplishes zone outside the visible area window with the point of crossing of the com line of the seg line of segment encode and dot matrix.
The main material of LCD has glass, liquid crystal and polaroid, and profile can see by two sheet glass and combining, and two sheet glass sizes are different, and wherein larger we of glass size claim that it is large stretch of, and it is small pieces for the smaller title of size.Preferably, the point of crossing of cabling is in the situation that satisfy outside the visible area window, accomplishes away from the VA district to guarantee watching personnel to can't see unnecessary demonstration as far as possible, and is namely more far away better apart from the edge of visible area, the position of point of crossing is in the small pieces glass edge, namely farthest near the small pieces glass edge.
After adopting the inventive method, can effectively eliminate the bad phenomenon that shows cross effect, reach satisfied display effect, efficiently solve the poor difficult problem of liquid crystal display device display effect.It is zero that the probability that occurs the cross effect bad phenomenon after employing the present invention is close to.The inventive method is simple, practical, do not increase cost.
Below in conjunction with drawings and Examples, by prior art and contrast of the present invention, implementation procedure of the present invention and structure are described in further detail.
Be illustrated in figure 1 as LCDs plane each several part position view in prior art, the center section of LCDs is the viewing area, comprise segment encode display graphics zone 1 (being the segment encode display part) and dot matrix display graphics zone 2 (being the dot matrix display part), wherein glass edge 3, small pieces glass edge 6, visible area outer 4, visible area refer to assemble the LCDs zone that can see figure after shell, and the zone outside the LCDs viewing area is non-viewing area.The below chip placement IC5 of LCDs.The displaying contents of LCDs is made of public electrode glass sheet and segment electrode glass sheet, and the former is column electrode, and the latter is the row electrode, and every delegation connects with an electrode separately draws, and is referred to as public electrode; Vertically each is listed as each personal electrode and connects and draw, and is referred to as the row electrode.
Figure 2 shows that the seg line cabling schematic diagram of LCDs of the present invention, dotted line is the seg line of dot matrix, and solid line is the seg line of segment encode, and the seg line of chip IC is divided into two parts and comes use as can be seen from Figure 2, and a part is used for driving dot matrix, and a part is used for driving segment encode.
Figure 3 shows that the com line cabling schematic diagram of LCDs of the present invention, dotted line is the com line of dot matrix, and dot-and-dash line is the com line of segment encode, and the com line of chip IC is divided into two parts and comes use as can be seen from Figure 3, and a part is used for driving dot matrix, and a part is used for driving segment encode.Example: chip IC can drive 132 * 65 dot matrix, and dot matrix is 120 * 48 (refer to row * OK), drives dot matrix with regard to 120 seg and 48 com with chip IC so, and remaining 12 seg and 17 com drive segment encode.
From the whole cabling schematic diagram of LCDs of the present invention shown in Figure 4, can find out the point of crossing of the com line of the seg line of segment encode content and dot matrix content.Because the IC of COG is capable of both sides, row are in the centre position, thus drive in order to satisfy separately, during seg line linkage section digital content will with the com line generation cross occurrence point of crossing that is connected the dot matrix content.Can find out from accompanying drawing, the position of point of crossing 7 is outside the visible area window.
Fig. 5 is the cabling schematic diagram during conventional design in prior art, can find out that the seg line of segment encode and some seg line of dot matrix are multiplexing, be that the seg line of chip IC had both driven dot matrix and also drives segment encode, example: chip IC can drive 132 * 65 dot matrix, and dot matrix is 120 * 48, so 120 seg lines and the 48 com lines with chip IC drive dot matrix, select the seg line close to the segment encode displaying contents directly to drive segment encode in these 120 seg.In a segment encode, the same dot matrix that lists causes cross effect with regard to there being the voltage of selection to add like this.And the cabling mode of Fig. 4 has just been avoided the appearance of this phenomenon.
For realizing the said method flow process, the present invention also proposes a kind of liquid crystal display device of eliminating cross effect, wherein:
The com line of the segment encode display part of LCDs and the com line of dot matrix display part are connected respectively to the different com pins of drive IC, and the com line of described segment encode display part and dot matrix display part refers to the column electrode of segment encode display part and the dot matrix display part of LCDs; The seg line of the segment encode display part of LCDs and the seg line of dot matrix display part are connected respectively to the different seg pins of drive IC, and the seg line of described segment encode display part and dot matrix display part refers to the row electrode of segment encode display part and the dot matrix display part of LCDs.
The com line of the seg line of described segment encode display part and described dot matrix display part has the point of crossing, the zone that the position of described point of crossing will be outside the visible area window.
In an embodiment of the present invention, the part com line of described IC and seg line drive the segment encode part, and remaining com line and seg line drive the dot matrix part.As one embodiment of the present of invention, only comprise single content on seg line of described IC or com line, described single content refers to dot matrix or segment encode content.
In an embodiment of the present invention, the com line of the com line of segment encode display part and seg line and dot matrix display part and seg line on the figure that cuts blocks for printing without any tie point, the zone of the point of crossing of cabling outside window.Preferably, the position of described point of crossing is in the small pieces glass edge, namely farthest near the small pieces glass edge.
The present invention separates driving with the com line of liquid crystal display device segment encode display part and dot matrix display part with the seg line, make the com line of the com line of segment encode display part and seg line and dot matrix display part and seg line on the figure that cuts blocks for printing without any tie point, namely two viewing areas are without any tie point.Why do this processing and be based on and prevent that the displaying contents that drives on com line or seg line is too many, cause the display effect of the many com lines of displaying contents or seg line and other com lines or seg line to have any different, cause display frame cross effect to occur.
Those of ordinary skill in the field are to be understood that: the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a method of eliminating cross effect, is characterized in that, comprising:
The com line of the com line of the segment encode display part of LCDs and dot matrix display part is separated driving, and the com line of described segment encode display part and dot matrix display part refers to the column electrode of segment encode display part and the dot matrix display part of LCDs;
The seg line of the seg line of the segment encode display part of LCDs and dot matrix display part is separated driving, and the seg line of described segment encode display part and dot matrix display part refers to the row electrode of segment encode display part and the dot matrix display part of LCDs;
The seg line of segment encode and the com line of dot matrix have the point of crossing, the zone of described point of crossing outside the visible area window;
The described part com line and the seg line that refer to IC of separately driving drives the segment encode part, and remaining com line and seg line drive the dot matrix part.
2. the method for elimination cross effect according to claim 1, is characterized in that, makes on seg line of IC or com line by cabling only to comprise single content, and described single content refers to dot matrix or segment encode content.
3. the method for elimination cross effect according to claim 1, is characterized in that, the position of described point of crossing is in the small pieces glass edge.
4. liquid crystal display device of eliminating cross effect is characterized in that:
The com line of the segment encode display part of LCDs and the com line of dot matrix display part are connected respectively to the different com pins of drive IC, and the com line of described segment encode display part and dot matrix display part refers to the column electrode of segment encode display part and the dot matrix display part of LCDs; The seg line of the segment encode display part of LCDs and the seg line of dot matrix display part are connected respectively to the different seg pins of drive IC, and the seg line of described segment encode display part and dot matrix display part refers to the row electrode of segment encode display part and the dot matrix display part of LCDs; The com line of the seg line of described segment encode display part and described dot matrix display part has the point of crossing, the zone that the position of described point of crossing will be outside the visible area window;
The part com line of described IC and seg line drive the segment encode part, and remaining com line and seg line drive the dot matrix part.
5. the liquid crystal display device of elimination cross effect according to claim 4, is characterized in that, only comprises single content on seg line of described IC or com line, and described single content refers to dot matrix or segment encode content.
6. the liquid crystal display device of elimination cross effect according to claim 4, is characterized in that, the position of described point of crossing is in the small pieces glass edge.
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| CN 201110249976 CN102305976B (en) | 2011-08-29 | 2011-08-29 | Method for eliminating cross effect and liquid crystal display device |
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| CN 201110249976 CN102305976B (en) | 2011-08-29 | 2011-08-29 | Method for eliminating cross effect and liquid crystal display device |
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| CN105355172A (en) * | 2015-11-19 | 2016-02-24 | 无锡威峰科技有限公司 | Dot matrix and segment code two-in-one EPD display screen |
| CN107310390A (en) * | 2016-04-26 | 2017-11-03 | 大陆汽车电子(芜湖)有限公司 | Double screen automobile instrument |
| CN107680553B (en) * | 2017-11-16 | 2023-06-09 | 黑龙江天有为电子股份有限公司 | Gray scale display segment code liquid crystal screen and gray scale display method thereof |
| CN108682406B (en) * | 2018-06-22 | 2020-12-22 | 亚世光电股份有限公司 | Low power consumption liquid crystal display |
| JP7494626B2 (en) | 2020-07-29 | 2024-06-04 | セイコーエプソン株式会社 | Integrated circuit device, liquid crystal display device, electronic device and mobile device |
| CN112053654A (en) * | 2020-09-03 | 2020-12-08 | 苏州蓝石新动力有限公司 | Display device and traffic equipment |
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| JP4330059B2 (en) * | 2000-11-10 | 2009-09-09 | カシオ計算機株式会社 | Liquid crystal display device and drive control method thereof |
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| CN101345251A (en) * | 2007-07-13 | 2009-01-14 | 旺宏电子股份有限公司 | 4F2 self align fin bottom electrodes fet drive phase change memory |
| CN101414441A (en) * | 2007-10-19 | 2009-04-22 | 陈国平 | Color liquid crystal display device driven by field sequence and drive method thereof |
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Address after: 065001 No. 2, road 36, Langfang economic and Technological Development Zone, Hebei Patentee after: Ji ya (Langfang) electronic Limited by Share Ltd Address before: 065001 No. 2, road 36, Langfang economic and Technological Development Zone, Hebei Patentee before: Hebei Jiya Electronics Co., Ltd. |