混合內嵌式觸控 Apple 補強專利已於今年獲證

混合內嵌式觸控 Apple 補強專利已於今年獲證

   由Sony最先生產的混合內嵌式觸控，運用LCD內部的Vcom分條後作為觸控的驅動訊號Tx，然後在LCD的玻璃外再用ITO做成觸控用的接收電極Rx，新思(Synaptics)的TDDI技術用的觸控結構也是如此，當初Apple在2007年提出的專利雖然有提到這個觀念，可是權利項中並沒有關於這種觸控結構的描述，所以筆者在這兩年來的多次演講中，都提到這個技術可能會成為公版，因為缺乏專利的保護，雖然Sony有提出相關的專利申請，可是有Apple作為前案，通過的機會不高，現在Apple已於今年5月取得這方面的專利，讓整個產業的局勢產生變化，據筆者所知已經有許多面板業者投入開發相關的研發與生產，甚至已有產品出貨，現在需要好好考慮專利的因素，會不會造成重大損失。

Segmented Vcom

US 8451244 B2

Date of Patent: *May 28, 2013

FILed    ' Apr‘ 11’ 2011

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of U.S. patent application Ser. No. 11/760,036, filed Jun. 8, 2007, which claims priority to Provisional U.S. Patent Application Ser. No. 60/804,361, filed Jun. 9, 2006, Provisional U.S. Patent Application Ser. No. 60/883,979, filed Jan. 8, 2007, which are hereby incorporated by reference in their entirety.

Abstract

Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane-switching (IPS) LCDs. In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed.

What is claimed is:

1. A touch screen comprising:

a liquid crystal display having a plurality of pixel electrodes and a counter electrode;

the counter electrode segmented into a plurality of touch drive electrodes, the counter electrode operating as a common voltage electrode by providing a common voltage during a display function and operating as the plurality of touch drive electrodes during a touch function;

a plurality of touch sense electrodes spaced apart from the plurality of touch drive electrodes to form capacitive coupling nodes therebetween; and

at least one capacitance touch sensing circuit operatively coupled to the plurality of touch sense electrodes during the touch function for measuring a change in capacitance at the capacitive coupling nodes;

wherein during the touch function, the plurality of touch drive electrodes are operative to transmit at least one stimulation voltage along one or multiple ones of the plurality of touch drive electrodes to the capacitive coupling nodes.

2. The touch screen of claim 1, wherein the liquid crystal display has a color filter plate and wherein the plurality of touch sense electrodes are disposed on the color filter plate.

3. The touch screen of claim 2, wherein the liquid crystal display comprises a plurality of rows of display pixels and wherein each of the plurality of touch drive electrodes overlaps plural rows of display pixels.

4. The touch screen of claim 2, wherein the plurality of touch drive electrodes are disposed on the color filter plate.

5. The touch screen of claim 2, wherein the plurality of touch drive electrodes are disposed on the color filter plate on a side opposite the plurality of touch sense electrodes.

6. The touch screen of claim 2, wherein the liquid crystal display further comprising:

a first polarizer;

a second polarizer;

an active matrix layer disposed on a first substrate, the first substrate disposed between the first and second polarizers;

the color filter plate disposed between the first and second polarizers and spaced apart from the active matrix layer; and

a liquid crystal layer disposed between the first substrate and the color filter plate.

7. The touch screen of claim 6 wherein the liquid crystal display comprises a plurality of rows of display pixels and wherein each of the plurality of touch drive electrodes overlaps plural rows of display pixels.

8. The touch screen of claim 1, wherein the plurality of touch drive electrodes comprise patterned ITO and the plurality of touch sense electrodes comprise patterned ITO.

9. The touch screen of claim 1, wherein the liquid crystal display comprises a plurality of rows of display pixels and wherein each of the plurality of touch drive electrodes overlaps plural rows of display pixels.

10. The touch screen of claim 9, wherein a touch scanning rate is twice a display refresh rate.

11. The touch screen of claim 1, wherein a touch scanning rate is twice a display refresh rate.

12. The touch screen of claim 1, wherein a touch scanning rate is equal to a display refresh rate.

13. The touch screen of claim 1, wherein:

the liquid crystal display comprises a plurality of rows of display pixels and wherein each of the plurality of touch drive electrodes overlaps plural rows of display pixels and

each display pixel includes a storage capacitor and in the display function the common voltage is applied to each storage capacitor of the plural rows of display pixels overlapped by each of the touch drive electrodes.

14. The touch screen of claim 13, wherein in the display function, the common voltage is also applied to the touch drive electrodes.

15. The touch screen of claim 13, wherein in the touch function, the stimulation voltage is also applied to each storage capacitor of the plural rows of display pixels overlapped by a given touch drive electrode which receives the stimulation voltage.

16. The touch screen of claim 13, wherein in the touch function, each storage capacitor of the plural rows of display pixels overlapped by a given touch drive segment which receives the stimulation voltage is placed in an open state.

17. The touch screen of claim 1, wherein the liquid crystal display further comprises:

a first polarizer;

a second polarizer;

an active matrix layer disposed on a first substrate, the first substrate disposed between the first and second polarizers;

a color filter plate disposed between the first and second polarizers and spaced apart from the active matrix layer; and

a liquid crystal layer disposed between the first substrate and the color filter plate; and

wherein the plurality of touch drive electrodes and the plurality of touch sense electrodes are disposed on the color filter plate.

18. The touch screen of claim 17, wherein the plurality of touch drive electrodes and the plurality of touch sense electrodes are disposed on opposite sides of the color filter plate.

19. The touch screen of claim 18, wherein the plurality of touch drive electrodes are disposed on a side of the color filter plate facing the liquid crystal layer, and the plurality of touch sense electrodes are disposed on a side of the color filter plate facing the second polarizer.

20. The touch screen of claim any of claim 1, wherein the display and touch functions are performed simultaneously, and an area of the display being updated in the display function does not overlap an area of the display being scanned in the touch function.

21. The touch screen of claim 20, wherein the at least one capacitance touch sensing circuit includes a charge amplifier having an inverting input coupled to receive an output from the plurality of touch sense electrodes, a non-inverting input coupled to a reference potential and an output coupled to the inverting input.

22. The touch screen of any of claim 1, wherein the capacitance touch sensing circuit includes a charge amplifier having an inverting input coupled to receive on output from the plurality of touch sense electrodes, a non-inverting input coupled to a reference potential and an output coupled to the inverting input.

23. An electronic device incorporating the touch screen as recited in claim 1.

24. A method of integrating the functions of a liquid crystal display and a touch screen comprising:

providing a counter electrode segmented into a plurality of touch drive electrodes for operating as a common voltage electrode by providing a common voltage during a display function and operating as the plurality of touch drive electrodes during a touch function; and

providing a plurality of touch sense electrodes spaced apart from the plurality of touch drive electrodes to form capacitive coupling nodes therebetween, the plurality of touch sense electrodes adapted for coupling to capacitance touch sensing circuitry;

wherein during the touch function, the plurality of touch drive electrodes are operative to transmit at least one stimulation voltage along one or multiple ones of the plurality of touch drive electrodes to the capacitive coupling nodes.

25. The method of claim 24, further comprising: providing the plurality of touch sense electrodes on a color filter plate.

26. The method of claim 25, further comprising: providing a plurality of rows of display pixels; disposing each of the plurality of touch drive electrodes in overlapping relationship with a contiguous group of the plurality of rows of the display pixels.

內嵌式金屬網格觸控結構 Metal mesh in cell touch LCD

內嵌式金屬網格觸控結構

metal mesh in cell touch LCD

    敦泰科技最近與大陸手機廠合作推出了使用新一代內嵌式觸控結構的手機VSUM i1 精英版，據傳聞使用了兩層的金屬網格在LCD彩色濾光玻璃的BM下層位置，而敦泰發表的說法則是說，將Apple iPhone 5原本做在LCD array玻璃上的觸控Sensor移到彩色濾光片玻璃的BM下層，另外也有一說是使用類似Sony 的mix on cell/in cell結構(同於新思 的 TDDI技術)，SuperC-Touch 很好奇地去查詢了敦泰科技有關內嵌式觸控的專利申請，找到有三篇關於內嵌式觸控結構的專利，日期分別在2012年的9月，2013年的 1月，2013年的2月，剛申請不久與現在距離蠻近的，仔細看過內容後發現與 SuperC-Touch 獲證的內嵌式觸控結構專利類似，都是主張用Metal mesh當觸控Sensor 並且將其做在LCD內部看不到的區域，如此就可以解決Metal mesh 觸控技術所面臨的最大困擾 “反光” 與 “穿透率不好” 的問題，SuperC-Touch推廣這個技術已超過了一年的時間，很可惜並沒有獲得太多的認同，現在有敦泰科技一起發聲，至少不會孤獨。

    Metal mesh in cell touch 將會徹底改變觸控的產業生態，將板塊由觸控面板廠或模組廠轉移到LCD的面板廠，其最大的好處是生產容易，良率高，成本低，產量大，光學特性最好，最輕最薄，所有的優點都具足了，為什麼沒有LCD面板廠願意投入這個技術來開發產品，關鍵就在於找不到可以使用的觸控IC技術可以支援這個觸控結構，因為觸控IC必須要解決很大的自電容問題(高達幾百pF，比on cell 高出100倍)，LCD 內部雜訊干擾問題(比on cell嚴重100倍)，這兩個問題讓大家難以相信其可行性而裹足不前，SuperC-Touch雖然做了許多實驗來證明其可行性，但是缺乏資金難以完成樣品讓大家信服，讓內嵌式金屬觸控技術原地踏步了一年，現在敦泰科技將此技術用在手機並且量產，開啟了Metal mesh in cell touch 的新紀元，不論其好壞都可證明此技術的可行性，未來的三年的發展將是觸控產業的關鍵，谁是新的觸控產業領導者，就決勝在跟的腳步快慢與專利佈局上的深淺廣度。

SuperC-Touch’s 7th patent for touch panel open to make sales

SuperC-Touch’s 7th patent for touch panel open to make sales

U.S. Certificated No. US 2011/0163993(invention)

Name: CAPACITIVE TOUCH PANEL

Price: 1,500,000. USD

Description:

This patent and the sixth patent CN201010001496.6, Name: capacitive touch panel device are for the same patent proposal, just apply for a U.S. patent. I have already received patent approving notification by the U.S. Patent Office and await the certified announcement with a certificate arrive.

Compared to the panel which used metal crossover structure, the real single layer ITO touch panel can reduce photolithography two times in the production process, so the cost can lower 30%. Today, this single layer ITO structure touch panel which mainly uses the triangular pattern electrodes is widely applied in inexpensive products. In China, 130 million affordable mobile phones which use single layer ITO electrode sold each year. However, when panel size increases, the accuracy of single layer ITO touch panel will be substantially reduced, so it can only be used in small-sized products, but not be used in the tablet and Ultra book.

The purpose of the present invention is to solve this problem. First, applying conservation of energy to measure the ITO electrode's resistance value and converting it into a distance value to obtain the coordinate of one axis, then, by measuring the difference in capacitance value ​​to get a coordinate of another axis. The method of present invention can be applied to produce single-layer structure of ITO touch panel without size limitation, from 3.5 inches to 80 inches can be. So, it is the best solution for entering the cheap tablet and Ultra book market.

Full text of the present patent

http://www.superc-touch.com/doc-my/US20110163993.pdf

Thanks for all predecessors recent questions and answer all your questions in the post:

(1)   What’s the difference between this patent and single layer mutual capacitance and single layer self-capacitance?

Ans.: For the touch panel with multiple-finger touch features, whether single ITO layer structure is used with self-capacitance or used with mutual capacitance, when the size of touch panel becomes large, the sensing points also become too many, and the following issues will seriously increase: 1.Wiring out is a big problem. 2. The ITO's resistance becomes too large and causes controller IC cannot detect the tiny signal. 3. The contacts of FPC are too tiny and too close to cause bonding yield lower down, so rising costs. That’s why the size rarely does more than 7 inches.

    For the touch panel which has triangular pattern sensors of a single ITO layer that provides a single-finger gestures feature, touch accuracy becomes serious poor due to the panel size becomes large, so that users cannot accept.   

   

    The present invention can overcome these problems and apply to the single layer structure in large size touch panel, from 7 inch to 80 inch.

(2)   Does it need to change the ITO pattern? Or it can use the previous pattern?

Ans.: Only using the Rx pattern of DITO structure is enough, but not Tx Part. Therefore, it’s a single layer structure; the accuracy is higher than the triangular pattern and without size limitation.

(3)   What is the impact of resistance to it? Or no effect?

Ans.: The higher sheet resistance the higher measurement accuracy, it is possible to use various ITO alternative materials, such as ZTO, conductive polymers, etc., can be used in sheet resistance 1000 ohms / square cm, significantly reducing the production cost of the touch panel, dry process can also be used in the patterned process, such as laser etching, chemical etching or the like.

(4) Do you use the principle calculating the sensor's resistance's distance to calculate the capacitance?

Ans.: Measuring self-capacitance to calculate the X-axis coordinate and measuring single one ITO sensor’s resistance value to determine the coordinate of the Y-axis, so each sensing electrode uses two methods to get the X, Y axis coordinates.

(5) So it would only use the RX pattern on it, like a diamond or a long strip can do?

Ans.: Complete corrects, and the diamond pattern gets better effect than a long strip pattern.

(6) The costs of single-layer structure on-cell touch panels have been low enough also

 Needs to develop in-cell technology?

Ans.: Undeniable single-layer structure on-cell touch has a considerable price advantage, I believe that in the near future it will fully replace of the G / G and OGS touch panel below five inches. However, for LCD Makers Since there is not much in terms of technical barriers and the threshold is not high, so in profitable state, will attract the majority of LCD Makers competing R & D production, the fierce competition is inevitable.

    However, single-layer structure on-cell touch there are still many problems to be overcome, there are many challenges across, however, such as size limit issue , FPC bonding process low yield, the dead zone caused by ITO traces , too large resistance of ITO wiring line, excessive capacitive problem which is caused by too close with LCD, LCD noise problems will cause instability in the quality and the poor experience of users and brand firms' faith, all the issues will affect the single layer on-cell touch the future.

The cost of many in-cell touch structure is lower than on-cell structure, and there is no limit on the size, as long as the touch IC technique progress into the  in-cell field, can cause the touch industry decisive change, so long-term development to look, in-cell touch is the touch industry of no return, it is difficult to find other options. Today, we see a variety of touch panel technologies such as OGS, GF2, single layer on cell, metal mesh, etc. And there are many materials development, such as ZTO, conductive polymers, Nano silver, carbon nanotubes, grapheme…all the technologies and material mentioned before are just a transitional period products. Therefore, will eventually be eliminated, sincere suggest that you be taken seriously this trend.

Now the development of the single layer on cell, Sony mixing in cell and on cell, metal mesh, OGS, TOL and other technologies are just a transitional nature.

(7) Taiwan market is small, whether the price of Taiwan's patent should be relatively low?

Ans.: There are more than one hundred countries around the world, will go to apply for a patent only in several countries, however, even if these countries have applied for patents all certified, there are still hundreds of countries not patented with unrestricted market can go to sales, Therefore, the restrictions on the sales market has limitations.

The scope of patent protection in addition to selling restrictions also limit production; For protecting the rights and interests, it is more effectively to limit production from upstream producers than to ban the sale in the consumer countries.

Particularly in relation to in-cell touch patent, the patents in the producing countries are more important. Taiwan's LCD panel production occupies an important position, so the value of patents than even the largest consuming country (the United States) but also to the high and also South Korea and mainland China the patent is contested. The patents certified in South Korea pose a threat to Samsung and LGD, patents certified in China pose a threat to BOE, TCL, Century Display, IVO, CEC Panda, etc. The patents certified in Taiwan pose a threat to AUO, Innolux, CPT, Hannstar, etc.

Japan is not included because of Japan seldom to counterfeit products of others, so the value of patents are only to restrict the sale and it will be relatively low.

Using patents to protect their own production and restrict the opponents' production is much more important than using patents to protect their own sales and restrict the opponents' selling.

(8)There is a growing demand of the size of the Touch Panel in current market, so the material of the Sensor is transfer from ITO to Metal, but currently due to poor visibility issue which is caused by the reflectivity of the Metal of Metal Mesh, generally made ​​of nickel alloy target, the visibility can be better, but still high impedance.

Ans.: If suddenly a touch IC company says capacitors and resistors issues are overcome, and that we are wasting time of doing a variety of materials and methods of improvement. The progress of material technology is slow, but the progress of touch IC technology is fast, so touch IC advances can solve the problem, do not spend too much energy in changing material.

(9)What kind of metal has both characters of high transparency and low impedance?

  

Ans.: In fact, it is not the best way to improve the material of metal mesh, but where to place the Metal mesh, if we locate the metal mesh ​​at the corresponding position under the BM layer of color filter glass, where the metal mesh cannot be seen, so there is no reflection problem.

SuperC-Touch developed "perturbation resonance" touch IC technology not only to overcome the problems of capacitors and resistors, but also to overcome the problem of LCD noise, so no matter Metal mesh made ​​at In cell, On cell, Out cell is not a problem, Since the performance of touch IC is no more an issue, how to use Metal mesh in cell interior to achieve the lowest cost, that is your company can work toward.

The future mainstream technology of the touch industry is to make the Metal mesh in the interior of the LCD's originally opaque area. 

 If you seniors have further issues to discuss, welcome to Email me.

SuperC-Touch will do our best to provide you answers and solutions, thank you.

SuperC Touch Standly Lee

SuperC-Touch 第七件觸控專利開使銷售

SuperC-Touch 第七件觸控專利開使銷售

美國申請號US 2011/0163993 

名稱: CAPACITIVE TOUCH PANEL

售價: 1,500,000. USD

說明:

與第六件專利CN201010001496.6，名稱: 电容式触控面板装置，為相同的觸控專利提案，只是申請美國專利，目前已接獲美國專利局核准通知，等待獲證公告與證書寄達。

真正單層ITO結構的觸控面板,比起金屬跨橋的結構，由於省下兩道光罩的製程，所以在成本上可以節省30%，目前廣泛的使用在平價的產品上，其中以三角形觸控電極為主，在中國每年有1.3億支的平價手機使用，然而當觸控面板的尺寸增加時，三角形 Pattern 準確度會大幅下降，所以只能用在小尺寸的產品上，無法用在平板電腦與超級本( Ultra book )上 。

    本發明的目的就在解決這個問題，使用能量不滅定律來測量ITO的電阻值，然後換算成距離，取得一軸的座標，使用測量電容值的差異來取得另一軸的座標，

使用本發明的方法來製作單層ITO結構的觸控面板沒有尺寸上的限制，從3.5寸到80寸都可以，是跨入平價平板，超級本(Ultra book)的最佳方案。

專利全文

 http://www.superc-touch.com/doc-my/US20110163993.pdf

 感謝先進們的提問也一併回覆如下

(1)         这个专利跟单层自电容和单层互电容的差异在那里？

Ans:單層ITO結構不論用自電容或互電容在觸控面板尺寸變大時，如果是多指觸控的都有點數變多，造成連接線太多會走不出來的共同的問題，連接線ITO電阻太大無法控制，FPC接點太緊密，接點總長度太長會造成貼合時良率變差，讓成本上升，所以尺寸上很少能做超過7吋，如果是單指手勢的三角形Pattern，尺寸變大時，觸控的準確度就會變得很差，令使用者無法接受。

   本發明剛好可以克服上述問題，讓單層結構順利跨入大尺寸的領域，適合7吋到 80吋的觸控面板。

(2)   在Pattern图上有没有做改变？还是用以前的Pattern就可以？

Ans: 使用的Pattern，用DITO結構的上半部Rx的部分就可以, Tx 的部分不用，所以是單層結構，準確度比三角形Pattern還高，沒有尺寸的限制。 

(3)   电阻对他的影响是多少？   还是没有影响？

Ans: 片電阻越高測量的準確度越高，所以可以使用各種ITO的替代材料，如ZTO，導電高分子等，片電阻可以用到1000歐姆/平方，大幅降低觸控面板的生產成本，圖案化的製程也可以使用乾式製程，如雷射蝕刻，化學蝕刻等。

(4)    是通过电阻的距离来计算电容的计算原理？

Ans: 測量自電容的值用來計算X軸座標，測量單一條ITO電阻值來決定Y軸的座標，所以每一條感應電極要用兩種方法各測一次來取得X,Y軸的座標。

(5)  如这样那只要用RX的图形就可以了，像菱形和长条形都可以吗？

Ans: 完全正確，菱形比長條形效果好。

(6)  單層結構的on cell成本已經夠低還需要開發in cell touch的技術嗎?

Ans:不可否認的單層結構的on cell touch具有相當的價格優勢，相信在不久的未來會全面取代5吋以下的G/G ， OGS的觸控面板，然而對LCD Makers而言由於沒有太多的技術障礙，跨入門檻不高，所以在有利可圖的狀態下，會吸引了大部分的LCD Makers爭相投入研發生產，可以看到劇烈的競爭在所難免。

  然而單層結構的on cell touch 還有許多問題待克服，也有許多的難題跨不過，如尺寸做不大的問題，FPC貼合時的良率，ITO走線所造成的死區問題，ITO走線電阻太大的問題，與LCD太近所造成的電容過大的問題，LCD 雜訊的問題，都會造成品質的不穩定與使用者經驗不佳，可否被品牌大廠所信賴都會影響signal layer on cell touch的未來走向。

   許多in cell touch結構的成本價格會比on cell touch還低，而且沒有尺寸上的限制，只要觸控IC的技術進步，便可造成觸控產業的決定性改變，所以長期的發展來看，in cell touch將是觸控產業的不歸路，很難找出其他的選項，現在所看到的各種觸控面板技術如OGS , GF2 , single layer on cell , metal mesh等與材料的開發如ZTO,導電高分子，奈米銀，奈米碳管，石墨烯等都只是過渡時期的產品，終會被被淘汰，誠懇的建議大家認真地看待這個趨勢。

現在開發中的single layer on cell，Sony mixing in cell and on cell，Metal mesh，OGS，TOL等技術都只是過渡性質。

(7)   台灣的市場小，台灣的專利的價格是否應該比較低?

Ans: 全世界有百多個國家，會去申請專利的不過數個國家，就算所申請的國家專利都獲證，也還有上百個沒申請專利的國家可以賣，對銷售的影響有很大的考量空間，專利保護的範圍除了銷售限制外還有生產的限制，與其用圍堵法在消費國去保障權益還不如由上游的生產國被限制生產來的有效率，尤其是有關in cell touch方面的專利在生產地的專利更為重要，台灣在LCD 面板的生產上佔有重要地位，所以專利的價值甚至比最大消費國(美國)還來的高，同樣韓國與大陸的專利也是兵家必爭之地，在韓國的專利會對三星與LGD產生威脅，大陸專利會對京東方，華星光電，深超光電，龍驣，熊貓等產生威脅，台灣專利會影響到友達，群創，華映，彩晶等，日本沒被列入的原因是很難看到日本去仿冒他人的產品，所以若專利價值只剩下限制銷售，因此專利價值會比較低。

  專利用來保障自己可以生產與限制對手不能生產，重要性遠大於保障自己可以銷售與限制對手不能銷售。

(8)   目前市面上Touch Panel因為尺寸有越來越大的需求, 故製作Sensor的材料由ITO改成Metal ，但是目前以Metal製作Metal Mesh會有因Metal反射率太高造成可視性不佳的issue 一般以鎳合金靶材製作, 可有較佳之可視性, 但阻抗仍然偏高

Ans: 如果突然跑出一家觸控IC公司說電容與電阻的問題都克服了,那我們現在所做的各種材料與方法的改善不就是在浪費時間做白工嗎，材料科技進步的速度慢，觸控IC技術進步的速度快，所以觸控IC進步可以解決問題時，就不要花太多的精力在改變材料上.

(9)   可否請教市面上何種金屬同時具有低阻抗與良好的可視性嗎?

Ans: 其實metal mesh最好的方式不在材料的改善,而是在於把Metal mesh做在那裡的問題,如果把metal mesh做在color filter玻璃的原有BM層之下,也就是LCD原本不透光的區域,這樣就看不到金屬線,所以沒有反射的問題.

        SuperC-Touch研發的 “微擾共振” 的觸控IC技術本來就克服電容與電阻的問題,也克服LCD雜訊的問題,所以不管Metal mesh做在 In cell，On cell，Out cell都不是問題,既然觸控IC不是問題,如何在In cell內部用Metal mesh做到最低成本,就是貴公司可以努力的方向.

將Metal mesh 做在LCD原本內部不透光的區域，是觸控產業的未來的主流技術。

如果各位先進還有更進一步的問題需要討論歡迎將問題Email給我，SuperC-Touch將竭盡所能為大家提供答案，謝謝。

SuperC-Touch 李祥宇敬上

Email:  superctouch@yahoo.com.tw

SuperC-Touch’s 6th patent for touch panel open to make sales

SuperC-Touch’s 6th patent for touch panel open to make sales

China Certificated No. CN201010001496.6 (invention)

Name: Projected Capacitive touch panel device

Price: 2,000,000. USD

Description:

The real single layer ITO touch panel, compared to the panel which used metal crossover structure, save two Photolithography in produce process, so the cost can lower 30%. Today, this single layer ITO structure touch panel which mainly uses the triangular pattern electrodes is widely applied in inexpensive products. In China, 130 million affordable mobile phones which use single layer ITO electrode sold each year. However, when panel size increases, the accuracy of single layer ITO touch panel will be substantially reduced, so it can only be used in small-sized products, but not be used in the tablet and Ultra book.

The purpose of the present invention is to solve this problem. First, applying conservation of energy to measure the ITO electrode's resistance value and converting it into a distance value to obtain the coordinate of one axis, then, by measuring the difference in capacitance value ​​to get a coordinate of another axis. The method of present invention can be applied to produce single-layer structure of ITO touch panel without size limitation, from 3.5 inches to 80 inches can be. So, it is the best solution for entering the cheap tablet and Ultra book market.

SUMMARY OF THE PATENT:

The present invention relates to a capacitive touch panel device which include a touch panel, a multiplexer, a 1^ST switch, a 2^nd switch, a 3^rd switch, a 4^th switch, a resistor, a capacitor, an analog to digital converter and an Integrator circuit. The touch panel comprises a plurality of conductive lines and the multiplexer is electrically connected to the plurality of conductive lines. The 1ST switch is electrically connected to the multiplexer, the 2nd switch, a capacitor and the 3^rd switch; the 2nd switch is electrically connected to the 1ST switch, a capacitor, the resistor and the Integrator circuit; the 3^rd switch is electrically connected to a voltage source, the 4^th switch, a capacitor and 1^st switch; the 4^th switch is electrically connected to the analog to digital converter, the 3^rd switch and Integrator circuit. The present invention is to utilize the principle of conservation of energy for designing of touch panel device; to avoid the Induced capacitance changes caused by touch area changes, thereby improving the accuracy of position detection and the production yield.

Full text of the present patent

http://www.superc-touch.com/doc-my/pn-201118699.pdf

If you seniors have further issues to discuss, welcome to Email me.

SuperC-Touch will do our best to provide you answers and solutions, thank you.

SuperC Touch Standly Lee

Email:  superctouch@yahoo.com.tw

SuperC-Touch 第六件觸控專利開使銷售

SuperC-Touch 第六件觸控專利開使銷售

大陸證書號 CN201010001496.6

名稱: 电容式触控面板装置

售價: 2,000,000. USD

說明:

   真正單層ITO結構的觸控面板,比起金屬跨橋的結構，由於省下兩道光罩的製程，所以在成本上可以節省30%，目前廣泛的使用在平價的產品上，其中以三角形觸控電極為主，在中國每年有1.3億支的平價手機使用，然而當觸控面板的尺寸增加時，準確度會大幅下降，所以只能用在小尺寸的產品上，無法用在平板電腦與超級本(Ultra book)上。

    本發明的目的就在解決這個問題，使用能量不滅定律來測量ITO的電阻值，然後換算成距離，取得一軸的座標，使用測量電容值的差異來取得另一軸的座標，

使用本發明的方法來製作單層ITO結構的觸控面板沒有尺寸上的限制，從3.5寸到80寸都可以，是跨入平價平板，超級本(Ultra book)的最佳方案。

專利摘要

    本發明係有關於一種電容式觸控面板裝置，包括：一觸控面板、一多工選擇器、一第一開關、一第二開關、一第三開關、一第四開關、一電阻、一電容、一類比數位轉換器、及一積分電路。觸控面板包含有多數個導電線，多工選擇器係電性連接至該等多數個導電線。第一開關係電性連接至多工選擇器、第二開關、及電容；第二開關係電性連接至該第一開關、電阻、積分電路、及電容；第三開關係電性連接至該電容、及第一開關；第四開關係電性連接至類比數位轉換器、及第三開關、及積分電路。本發明係利用能量守恆原理設計電容式觸控面板裝置，可避免因接觸面積改變所造成的感應電容值變化，進而提高偵測位置的精確度及生產良率。

專利全文

 http://www.superc-touch.com/doc-my/pn-201118699.pdf

如果各位先進還有更進一步的問題需要討論歡迎將問題Email給我，SuperC-Touch將竭盡所能為大家提供答案，謝謝。

SuperC-Touch 李祥宇敬上

Email:  superctouch@yahoo.com.tw

SuperC-Touch’s 5th patent for advanced in-cell touch panel open to make sales

SuperC-Touch’s 5th patent for advanced in-cell touch panel open to make sales

Taiwan Certificated No. M453900 (new utility model)

Name: LCD touch panel structure

Price: 5,000,000. USD

Description:

After discussing how to use metal lines in BM layer as sensors which located on the surface of color filter glass, then to start discussion using metal lines to make sensors on TFT array glass, SuperC-Touch have put forward in this regard dozens of possible options.

Wherein the structure used in TFT LCD, there are bound to face Vcom layer is interposed between the finger and the Sensor caused Shielding effect, This made all the technologies which detect the capacitance change are not feasible. The object of present invention is to solve the above problems and make it feasible. In present invention, Vcom layer is patterned to leave some gaps with respect to the locations of sensors which under Vcom layer, so the touch signals on sensors can penetrate those apertures to interact with the fingers and there is sufficient touch capacitance changes can measurements to.

Therefore, the present patent is an upstream essential patent for all the LCD touch panels which implant a variety of metal wires on the TFT array glass as Sensors. It has a critical position in in-cell technologies.

SUMMARY OF THE PATENT:

The present invention provides a liquid crystal display touch panel structure which includes a first substrate, a second substrate, a thin film transistor layer and a common electrode layer. The first and second substrate is located in parallel pairs and a liquid crystal layer is interposed between the two substrates. The thin film transistor layer is placed on the surface of the second substrate which faces the liquid crystal layer. The thin film transistor layer has K lines of gate driver line and L lines of source drive line. According to a display pixel signal and a display driving signal for driving the corresponding transistors and capacitors, and then performs a display operation. Common electrode layer is located between the first and the second substrate, the common electrode layer has a plurality of polygonal apertures, the plurality of polygonal apertures are located at the positions with respect to the thin film transistor layer, at least a portion of the gate drive lines and at least one parts of the source electrode driving lines.

Full text of the present patent

http://www.superc-touch.com/doc-my/gn-M453900.pdf

Thanks for every predecessor’s questions about the third invention we mentioned before, also reply as follow:

(1) I have a greater interest in the patent of your company, " A Touch display panel with metal lines connected to touch sensor electrodes on V com layer ", could you please provide detailed information for reference?

There is doubt as follows:

Which layer does the sensor locate on? How many touch points could be implemented? What is the difference between your invention and the popular in-cell and On-cell? And so on…

Ans.:

1.      This invention is applied on general TFT LCD display panel, Therefore, V com is on the glass of the LCD color filter, the invention pattern the Vcom layer as touch sensors.

2.      The present invention over existing in cell / on cell production process even simpler, so, high yield and the cost will naturally be much cheaper.

3.      Using metal wires hidden below the BM to connect touch sensors and touch IC, so there is no problem of resistance, it will not reduce the aperture ratio or lower optical characteristics.

4.      The V com layer of the LCD is patterned as touch sensors. As V com layer itself is touch sensor, so, there is no capacitive effect problems caused by that sensors and V com is too close.

5.      If you worry about the noise from LCD display signals to impact on touch IC's signal detection, you can use such as Apple's in cell timesharing method to avoid it.    

6.      Because resistors, capacitance, noise, aperture ratio and optical properties five issues are resolved together, so it should not be a problem for majority of the touch IC design company to launch applicable touch IC.

7.      Can be more than 10 of the touch.

8.      Summary:

   The patent is the best solution of In Cell touch Panel. It is for easy mass production, high yield, the best optical properties, easy to find applicable touch IC, and can significantly decrease the cost.

(2)Dear standly,

  Considerably admire for your research in touch panel field.

  I would like to ask you for a few things as follow.   

1.      To Your Company’s touch LCD panel structure, since the existing IC can operate, why major manufacturers are still waiting to see whether is the cost considerations?

2.      Your company's touch IC development and production is expected to be completed within how much time? How to expect to be able to divide the existing market share?

Ans.:

1.      All manufacturers are the same as you, just received the notice of this patent, so it will take some time to digest its content.

2.      We set goals which are bigger than described in this patent, not short-term can be done to see if three years or more to finished. The touch IC technologies applicable to the patent cannot offer a challenge to me and I intend to challenge more difficult level.

If you have further issues to discuss, Welcome to mail me.

SuperC-Touch will do our best to provide you the answers, thank you.

SuperC Touch Standly Lee

        Email:  superctouch@yahoo.com.tw