Every enterprise is advancing the development of the electrostatic capacity type jumbo size faceplate at the same time at present. Besides past mobile phone, also plan to expand the electrostatic capacity type domain of market which touches the faceplate to the plateform terminal and PC,etc..

U.S.A. 3M Company is in AV apparatus exhibition ” InfoComm2010″ On if you can’t exhibit, allocate on electrostatic capacity 22-inch LCD screen that be touched faceplate. Can measure 20 points at the same time.

U.S.A. loves special Mayor (Atmel) Begin, can support 15 electrostatic capacity type of display unit touch, spend the control device IC by faceplate by maximum by batch productino on will it be will it be the end June 2010. This company went into operation and supported the intellectual mobile phone of 2.5- 5 inches of small-scale pictures to use the control device IC in September of 2009 ” mXT224″ . Use 3 this control device ICs and one MCU to make on the basis of 10.1 inches of electrostatic capacity type kits of assessment and test which touch the faceplate, and demonstrate the work to mobile phone manufacturer and PC manufacturer,etc..

Selling the control device IC which supported more than 7 inches of display units before high subject of Hitachi, and plan the control devices IC of 8.9 inches of display units of listing greatest support in 2010. Hitachi that adopt call mutual detecting means of capacity type in the intersection of control device and characteristic of IC that produce by the intersection of Taiwan and FocalTechSystems that hi-tech sell, the detecting means it touches faceplates to be many to find the precision and speed of response have advantages while being a bit touching activated in electrostatic capacity type. It is reported, a control device IC maximum can support display unit of 8.9 inches.

Come on stage with the integrated technology of the liquid crystal

Can attenuate the thickness, lighten the weight with the integration of the liquid crystal. Liquid crystal and integrated technology of touching faceplate will have appeared since the second half of 2010. The present faceplate thickness of touch is about 1mm. This is equivalent to about 7% of iPad thickness. If the externally positioned touch faceplate part can integrate with the liquid crystal, expected to realize slimly to melt and light quantization.

Once proposed before imbedding In-cell technological motion which touches the sensor function in picture element of the liquid crystal, but because it is difficult to guarantee the yield and reveal the characteristic, has been failing to advance batch productino all the time. Adopt the complicated picture element inside on TFT array bottom panel of semi-conductive manufacture process to imbed and touch the sensor function method, have become the stumbling-block of guarantee yield. In addition, after imbedding and touching the sensor in picture element, can be used in the expicity area and shrink, this is one of the reasons which causes the deterioration of image quality.

But,” On-cell” Technical appearance, change the situation totally, technology this can at the intersection of colour filter and bottom panel the intersection of TFT and picture element inside at the the intersection of array and bottom panel, set up and touch the sensor function to realize integrating. Because only need to form the simple transparent electrode between bottom panel of colour filter and polaroid, so is easy to guarantee the yield. In addition, because the inner effective area of display interval of picture element will not shrink, the deterioration phenomenon of the image quality will hardly take place. The former imbeds and touches the function traditional method of the sensor to known as within the liquid crystal faceplate ” In-cell” ,The latter can dispose and touch the sensor function on the liquid crystal faceplate, is known as ” On-cell” . Adopting this technical faceplate will begin batch productino in the second half of 2010, will estimate that will be adopted by large-scale mobile phone manufacturer,etc..

The share of the touch faceplate in different ways changes rapidly

The share of the touch faceplates of different ways has happened too and can be overthrown in the past ” General knowledge ” Change. Until 2-3 years ago, the resistance was film type to occupy more than 70% of the proportions absolute predominance for a long time. However, take iPhone emerges in 2007 as good opportunities, the electrostatic capacity type fast improvement of influence on the whole market. After iPad is listed in 2010, the electrostatic capacity type position will further leap and improve.

The investigation result of U.S.A. DisplaySearch reveals, in touching the amount of money of stock of dollar of 4,300 million yuan of the faceplate 2009, the proportion film type in resistance accounts for 50%, the electrostatic capacity type is close to about 35%. This company predicts, in 2010, with the emerging etc. of enlargement and iPad of the market of intellectual mobile phone, ” The electrostatic capacity type transposes being film type with the resistance ” . By 2016, the electrostatic capacity type ” Will exceed 50% ” .

Tags: liquid crystal, the computer, The faceplate, The mobile phone

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