CN101071206A - Liquid crystal display screen line lead ITO routing method - Google Patents
Liquid crystal display screen line lead ITO routing method Download PDFInfo
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- CN101071206A CN101071206A CN 200610026358 CN200610026358A CN101071206A CN 101071206 A CN101071206 A CN 101071206A CN 200610026358 CN200610026358 CN 200610026358 CN 200610026358 A CN200610026358 A CN 200610026358A CN 101071206 A CN101071206 A CN 101071206A
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Abstract
The invention discloses a liquid crystal display to lead the ITO cabling methods. Characters: the shortest row string lead to the longest trip to the linewidth lead linewidth taken from small to large progressive approach to wiring. The specific method steps: arranging good shortest lead to a determined length, width, and sheet resistance calculated by LCD driver chips lead to a maximum resistance value and the shortest one to lead resistance value ratio of not more than two times the requirements of the longest row of a good line fuses, identified linewidth, the line is long; LCD products in accordance with the different requirements of a few choice lines according to the longest lead to a linewidth of the shortest lead to a linewidth of the lines and determine further Drive. The beneficial effects of the invention is to lead through the LCD screen linewidth progressive wiring and reduce the ITO alignment resistance, thus increasing chip driving capability, power and voltage to match the same, reducing screen showing bad to show that the formation of depth.
Description
Technical field
The present invention relates to a kind of wiring method of liquid crystal display screen line lead, particularly the ITO wiring method of STN supertwist type liquid crystal display screen line lead belongs to the LCD Technology field.
Background technology
As everyone knows, for STN supertwist type LCDs, no matter be COG (chip is on glass), or TCP (film carries chip), COF (chip is on film), when single-chip drives, wiring has certain requirement, especially size display screen bigger than normal more rigorous to COM (OK) ITO cabling requirement partly to ITO (being indium tin oxide).Between the pin of chip and being connected mainly of pin and internal circuit by ITO on glass,, and ITO compares metal wire and has very big resistance.The line resistance of walking of LCDs ITO is directly proportional with its length, is inversely proportional to its width, and this is called the square resistance number on term.Therefore, the resistance of ITO cabling is exactly the square resistance number of cabling and the product of glass square resistance number.The resistance value of a COM is exactly square resistance (line length/live width) sum of all line segments of this root line and the product of glass square resistance number.
The present middle large-sized liquid crystal display among the STN, because high capacity is when showing, the row, column pixel electrode is very thin, exists long line lead ITO to walk line resistance again, institute was so that the just bigger electrode resistance of original resistivity was just bigger.If resistance ratio is unreasonable, must cause falling of operating voltage, thereby chip promotes scarce capacity, has reduced display quality.Big or line number is particularly evident greater than 64 the time when LCDs, in addition can cause random demonstration, fully loaded show light, show phenomenons such as inhomogeneous.
Summary of the invention
The objective of the invention is provides a kind of and can reduce the wiring method that line lead ITO walks line resistance in order to improve the promotion ability of LCDs chip for driving.
The present invention relates to the wiring of ITO.During the line lead wiring, require the longest one resistance value and the shortest resistance value to be no more than 2 times.Because the resistance value of a line lead is exactly square resistance (line length/live width) sum of all line segments of this root line and the product of glass square resistance number, wherein the square resistance of glass is constant, resistance at every line lead, changing factor has only line length and live width, and the line resistance of walking of ITO is directly proportional with its length, be inversely proportional to its width, so reasonably allocate live width and line length.In general, line length also is not have too big variation substantially, so have only the adjusting by live width, solves and reduces to walk this problem of line resistance.
Technical scheme of the present invention is: a kind of ITO wiring method of liquid crystal display screen line lead, be characterized in that the shortest line lead live width takes laddering from small to large method to connect up to the longest line lead live width, and the method concrete steps are:
1. sequence a shortest line lead, determine line length, live width, calculate square resistance, the requirement that is no more than 2 times by the ratio of the resistance value of a longest line lead of LCDs chip for driving and a shortest line lead resistance value sequences a longest line lead, determines live width, line length;
2. the difference according to the liquid crystal display screen products requires the selection wire number;
3. determine the step footpath according to a longest line lead live width, a shortest line lead live width and line number.
The invention has the beneficial effects as follows,, reduced the line resistance of walking of ITO, thereby strengthened the driving force of chip, make power consumption and operating voltage coupling consistent, reduced the bad generation of screen demonstration by the wiring of going forward one by one of the live width of liquid crystal display screen line lead.
Description of drawings
Fig. 1 is a wiring diagram of the present invention.
Regional A is the corresponding ITO wiring of each line lead among the figure.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is elaborated.
The present invention includes ITO wiring on glass.According to the driving of chip and the logic function of screen, connect up, correspondingly distribute live width, the ITO wiring resistance ratio of each line lead is reasonable.As shown in Figure 1,6 kinds of live widths of progressively going forward one by one have been represented.
Embodiment 1:
Chip driver uses the UC1611 chip, in the scope of product cabling area size permission, should reduce the square resistance of every line lead as far as possible.The resistance value of the general the longest line lead of chip requirement is no more than 2 times with the ratio of the shortest line lead resistance value.It is 1.3 times that this chip supplier requires the resistance value of the longest line lead and the ratio of the shortest line lead resistance value.
When testing for the first time, though also reached the requirement of client to resistance value, owing to do not take the live width of incremental, row significantly shows the depth in the middle of causing.
When testing for the second time, the live width that sequences short leg minimum earlier is 40 μ m, line length is 113.66mm, calculating square resistance is 898.46, it according to the ratio of the resistance value of the longest line lead and the shortest line lead resistance value 1.3 times requirement, calculating maximum live width is 79.5 μ m, the line number that requires according to LCDs is 80, then the step directly is: (79.5 μ m-40 μ m) ÷ 79=0.5 μ m, every line width serves as that the step footpath increases progressively with 0.5 μ m, greatly reduces the ITO cloth line resistance of line lead.For making resistance littler, the step footpath of taking to go forward one by one also is very rational.Thereby reduce resistance square number, also just reduced all-in resistance, make the UC1611 chip can promote the large-size screen monitors of 97.75mm*82.7mm.
Embodiment 2:
On the medium size screen of 58.9mm*42.4mm, the nose of former row and line of shortest length resistance value ratio reach 2.35 times, do not meet designing requirement, and incremental manner is adopted in the back when practical wiring.The live width that sequences short leg minimum earlier is 50 μ m, line length is 72.82mm, calculating square resistance is 543.57, according to the ratio of the resistance value of the longest line lead and the shortest line lead resistance value be 2 times with interior requirement, just calculating maximum live width surely is 113 μ m.Require line several 64 according to LCDs, determine that the step footpath is 1 μ m, calculate long lead and short leg resistance value ratio is 1.6 times, in 2 times, during the realization chip drives, show the no depth.
In actual use, this scheme is practical, and the result is good for the experiment Product Validation, has improved screen and has shown uneven phenomenon.
Claims (1)
1, a kind of ITO wiring method of liquid crystal display screen line lead is characterized in that, the shortest line lead live width takes laddering from small to large method to connect up to the longest line lead live width, and the concrete steps of method are:
1) sequences a shortest line lead earlier, determine line length, live width, calculate square resistance, the requirement that is no more than 2 times by the ratio of the resistance value of a longest line lead of LCDs chip for driving and a shortest line lead resistance value sequences a longest line lead, determines live width, line length;
2) difference according to the liquid crystal display screen products requires the selection wire number;
3) determine the step footpath according to a longest line lead live width, a shortest line lead live width and line number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026358 CN101071206A (en) | 2006-05-09 | 2006-05-09 | Liquid crystal display screen line lead ITO routing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026358 CN101071206A (en) | 2006-05-09 | 2006-05-09 | Liquid crystal display screen line lead ITO routing method |
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| Publication Number | Publication Date |
|---|---|
| CN101071206A true CN101071206A (en) | 2007-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610026358 Pending CN101071206A (en) | 2006-05-09 | 2006-05-09 | Liquid crystal display screen line lead ITO routing method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004825A (en) * | 2010-11-05 | 2011-04-06 | 厦门高卓立科技有限公司 | Method for optimizing computation of resistance value of conducting film layer inside liquid crystal display |
| CN102323681A (en) * | 2011-06-16 | 2012-01-18 | 友达光电股份有限公司 | Lead structure and display panel with same |
| CN103605445A (en) * | 2013-12-09 | 2014-02-26 | 山东华芯富创电子科技有限公司 | Method for measuring wire resistance of ITO (indium tin oxide) circuit |
| WO2014047958A1 (en) * | 2012-09-27 | 2014-04-03 | 深圳市华星光电技术有限公司 | Driver circuit structure of liquid crystal display panel |
| WO2016095316A1 (en) * | 2014-12-19 | 2016-06-23 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and manufacturing method therefor |
| CN105929612A (en) * | 2016-06-15 | 2016-09-07 | 苏州众显电子科技有限公司 | ITO wiring method of liquid crystal display screen row leads |
| CN106851915A (en) * | 2017-03-03 | 2017-06-13 | 丁文兰 | A kind of intelligent display building glass and its conducting wire |
| CN111354718A (en) * | 2020-03-23 | 2020-06-30 | 江苏中科智芯集成科技有限公司 | Chip arrangement wiring method and device with multi-chip packaging structure and electronic equipment |
-
2006
- 2006-05-09 CN CN 200610026358 patent/CN101071206A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004825A (en) * | 2010-11-05 | 2011-04-06 | 厦门高卓立科技有限公司 | Method for optimizing computation of resistance value of conducting film layer inside liquid crystal display |
| CN102004825B (en) * | 2010-11-05 | 2013-05-29 | 厦门高卓立科技有限公司 | Method for optimizing computation of resistance value of conducting film layer inside liquid crystal display |
| CN102323681A (en) * | 2011-06-16 | 2012-01-18 | 友达光电股份有限公司 | Lead structure and display panel with same |
| WO2014047958A1 (en) * | 2012-09-27 | 2014-04-03 | 深圳市华星光电技术有限公司 | Driver circuit structure of liquid crystal display panel |
| CN103605445A (en) * | 2013-12-09 | 2014-02-26 | 山东华芯富创电子科技有限公司 | Method for measuring wire resistance of ITO (indium tin oxide) circuit |
| CN103605445B (en) * | 2013-12-09 | 2016-06-29 | 山东华芯富创电子科技有限公司 | The measuring method of ITO circuit line resistance |
| WO2016095316A1 (en) * | 2014-12-19 | 2016-06-23 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and manufacturing method therefor |
| US10012882B2 (en) | 2014-12-19 | 2018-07-03 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display panel |
| CN105929612A (en) * | 2016-06-15 | 2016-09-07 | 苏州众显电子科技有限公司 | ITO wiring method of liquid crystal display screen row leads |
| CN106851915A (en) * | 2017-03-03 | 2017-06-13 | 丁文兰 | A kind of intelligent display building glass and its conducting wire |
| CN111354718A (en) * | 2020-03-23 | 2020-06-30 | 江苏中科智芯集成科技有限公司 | Chip arrangement wiring method and device with multi-chip packaging structure and electronic equipment |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20071114 |