CN102346613B - Integrated capacitive touch screen and production method thereof - Google Patents
Integrated capacitive touch screen and production method thereof Download PDFInfo
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- CN102346613B CN102346613B CN 201110247339 CN201110247339A CN102346613B CN 102346613 B CN102346613 B CN 102346613B CN 201110247339 CN201110247339 CN 201110247339 CN 201110247339 A CN201110247339 A CN 201110247339A CN 102346613 B CN102346613 B CN 102346613B
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Abstract
The invention relates to an integrated capacitive touch screen with thin thickness, high light transmittance and low cost. The integrated capacitive touch screen comprises a coverlens substrate layer, an ITO (Indium Tin Oxide) pattern layer, an insulating layer, a conducting layer, a protecting layer and an FPC (Flexible Printed Circuit) assembly bound on the coverlens substrate layer; the ITO pattern layer is sputtered on the bottom surface of the a coverlens substrate layer; an ITO function pattern is processed on the ITO pattern layer; the insulating layer is sputtered on the bottom surface of the ITO pattern layer; the protecting layer is plated on the bottom surface of the conducting layer; and the FPC assembly is bound on the bottom surface of the coverlens substrate layer and is conducted with the ITO function pattern layer. The invention also relates to a production method of the integrated capacitive touch screen. The production method comprises the following steps of: producing the coverlens substrate layer; sputtering and processing an ITO film with the ITO function pattern on the bottom surface of the coverlens substrate layer; sequentially arranging the insulating layer, the conducting layer and the protecting layer at the bottom of the ITO pattern layer; and binding the FPC assembly on the coverlens substrate layer. According to the production method, the ITO pattern layer is directly processed on the coverlens substrate layer, and thus an attaching work procedure is saved and the cost is reduced; and the production method is beneficial to improving the capacity of the capacitive touch screen and reducing the power consumption of a portable electronic terminal product.
Description
Technical field
The present invention relates to the capacitive touch screen technical field, be specifically related to integrated capacitive touch screen, relate to simultaneously the method for making of this integrated capacitive touch screen.
Background technology
Touch-screen is to shield for the compound glass on the electronic products such as mobile phone, e-book, digital camera, wherein capacitance type touch control screen is the most frequently used a kind of in the touch screen, its operating principle is to utilize the electric current induction of human body to carry out work, the user touches touch screen by finger or felt pen and produces change in electric, realizes controlling electronic product.As shown in Figure 1; the conventional condenser touch screen generally includes following chief component element: functional layer; the COVER LENS substrate layer that functional layer is shielded; the OCA glue-line and be used for to calculate touch point and repayment to the FPC assembly of mainboard processor; wherein functional layer comprises again ITO SENSORS function substrate; the ITO patterned layer; insulation course; conductive layer and protective seam; the OCA glue-line fits together COVER LENS substrate layer and ITO SENSORS function substrate; be processed with on the ITO patterned layer for the ITO function pattern of realizing capacitive touch function, the FPC assembly is bundled on the ITO SENSORS function substrate by the ACF side of leading property double faced adhesive tape.This capacitance type touch control screen comprises functional layer, COVER LENS substrate layer and OCA glue-line three-decker from structure, thickness is thicker, transmittance is low, production process is comparatively loaded down with trivial details, be unfavorable for reducing manpower and material cost, and power consumption is higher when using on portable type electronic product.In addition, the COVER LENS substrate layer of this conventional condenser touch screen fits together with ITO SENSORS function substrate by the OCA glue-line, and between produces bubble easily, affects product yield.
Summary of the invention
In view of this, technical matters to be solved by this invention provides the integrated capacitive touch screen of a kind of simple in structure, thin thickness, the high and low power consumption of transmittance, and the integrated capacitive touch screen method for making that a kind of operation is simple and easy, workable, be conducive to promote the capacitive touch screen production capacity is provided.
For solving above technical matters; technical scheme provided by the invention is: a kind of integrated capacitive touch screen; comprise COVER LENS substrate layer; the ITO patterned layer; insulation course; conductive layer; protective seam and be bundled in FPC assembly on the COVER LENS substrate layer; the direct sputter of described ITO patterned layer is in COVER LENS substrate layer bottom surface; the ITO patterned layer is processed with for the ITO function pattern of realizing capacitive touch function; described insulation course sputter is in ITO patterned layer bottom surface; described conductive layer sputter is in the insulation course bottom surface; described conductive layer bottom surface also is coated with protective seam, described FPC component binding in COVER LENS substrate layer bottom surface and with the conducting of ITO function pattern.
The above-mentioned ITO function pattern that is used for realizing capacitive touch function that is machined on the ITO patterned layer processes by common process such as sputter, exposure, development, etchings.
The present invention be in fact will realize capacitive touch function ITO function pattern directly processing the function of script functional layer is integrated on the COVER LENS substrate layer, thereby saves OCA glue-line and ITO SENSORS function substrate in COVER LENS substrate layer bottom surface.The integral thickness that this not only can significantly reduce capacitive touch screen also makes light source send the process of rear arrival human eye from LCD, only passes through the loss of COVER LENS substrate layer, thereby significantly improves transmittance, reduces the power consumption of portable type electronic product.And ITO function pattern is set directly at COVER LENS substrate layer bottom surface, save and make the necessary bonding process of traditional capacitance touch screen, be conducive to simplify production process, improve yields, and can reduce the spending on bonding process equipment, reduce operating cost.
Further, be more effective protection ITO function pattern, insulation course and conductive layer, strengthen shielding action, described protective seam is preferably SiO
2Diaphragm.
In order to produce above-mentioned integrated capacitive touch screen, the present invention also provides a kind of integrated capacitive touch screen method for making, may further comprise the steps:
One, get glass substrate cleaning after, through tempering, baking, cleaning, again glass substrate is cut into the COVER LENS substrate layer of preliminary dimension specification;
Two, the COVER LENS substrate layer that step 1 is made after cleaning, baking, its bottom surface sputter ITO film again;
Three, process the ITO function pattern that needs according to the preset function pattern at the ITO film, make direct sputter in the ITO patterned layer of COVER LENS substrate layer bottom surface;
Four, process predetermined pattern at ITO patterned layer bottom surface sputter insulation course, and at insulation course; At insulation course bottom surface conducting layer sputtering, and process predetermined pattern at conductive layer; Armor coated in the conductive layer bottom surface;
Five, with the FPC component binding on COVER LENS substrate layer.
In the above-mentioned steps one, glass substrate is put into the annealing furnace tempering, and is toasted, cleans, cuts according to conventional way after cleaning.After the glass substrate cutting, carve and clean, toast through CNC, carry out again silk-screen, oven dry, the COVER LENS substrate layer of making at last the preliminary dimension specification is stand-by.
Two kinds of above-mentioned steps, directly with ITO film sputter in COVER LENS substrate layer bottom surface, and process the ITO function pattern that needs at the ITO film according to the preset function pattern, that the ITO function pattern of realizing capacitive touch function is directly processed in COVER LENS layer bottom surface at the ITO film of COVER LENS substrate layer bottom surface by sputter, the function of script functional layer is integrated on the COVER LENS substrate layer, save OCA glue-line and ITO SENSORS function substrate, significantly reduce integral thickness, the raising transmittance of capacitive touch screen.Adopt the conventional way in the industry to get final product at ITO film processing ITO function pattern,, make on the ITO film with default ITO function pattern by operations such as applying glue, development, exposure, etching, stripping glue according to predetermined pattern.
Step 3, four, five all can be with reference to conventional way in the industry.
The topmost innovative point of this integrated capacitive touch screen method for making is at COVER LENS substrate layer bottom surface sputter ITO film, and process the ITO function pattern that needs according to the preset function pattern at the ITO film, so that ITO function pattern is set directly at COVER LENS substrate layer bottom surface.
According to actual needs, carry out after glass substrate cutting action in the above-mentioned steps one can being adjusted at step 4, also namely after the armor coated operation in conductive layer bottom surface, again glass substrate is cut into the COVER LENS substrate layer of preliminary dimension specification.After the adjustment, above-mentioned integrated capacitive touch screen method for making is according to following steps:
One, get glass substrate cleaning after, through tempering, baking, cleaning;
Two, the glass substrate bottom surface sputter ITO film after processing through step 1;
Three, process the ITO function pattern that needs according to the preset function pattern at the ITO film, make direct sputter in the ITO patterned layer of glass-based flaggy bottom surface;
Four, process predetermined pattern at ITO patterned layer bottom surface sputter insulation course, and at insulation course; At insulation course bottom surface conducting layer sputtering, and process predetermined pattern at conductive layer; Armor coated in the conductive layer bottom surface, again glass substrate is cut into the COVER LENS substrate layer of preliminary dimension specification;
Five, with the FPC component binding on COVER LENS substrate layer.
Compared with prior art, the advantage that the present invention has is: 1, integrated capacitive touch screen disclosed by the invention is set directly at COVER LENS layer bottom surface with ITO function pattern, the function of script functional layer is integrated on the COVER LENS substrate layer, thereby can save OCA glue-line and ITO SENSORS function substrate, can significantly reduce the integral thickness of capacitive touch screen, adapt to the small and exquisite frivolous market demand of portable type electronic product.2, integrated capacitive touch screen disclosed by the invention makes light source send the process of rear arrival human eye from LCD, only through COVER LENS substrate layer, thereby significantly improves transmittance, has reduced the power consumption of portable type electronic product.3 integrated capacitive touch screens disclosed by the invention are set directly at COVER LENS substrate layer bottom surface with ITO function pattern, save and make the necessary bonding process of traditional capacitance touch screen, simplify production process, can reduce the spending on bonding process equipment, can also reduce operating cost.4, integrated capacitive touch screen method for making disclosed by the invention is saved and is made the necessary bonding process of traditional capacitance touch screen, and operation is simple, workable, be conducive to promote the capacitive touch screen production capacity.
Description of drawings
Fig. 1 is traditional capacitance touch-control screen structure synoptic diagram;
Fig. 2 is integrated capacitive touch screen structural representation of the present invention.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment the present invention is explained in further detail.
As shown in Figure 2; a kind of integrated capacitive touch screen; comprise COVER LENS substrate layer 1; ITO patterned layer 2; insulation course 3; conductive layer 4; protective seam 5 and be bundled in FPC assembly on the COVER LENS substrate layer; the direct sputter of ITO patterned layer is in COVER LENS substrate layer bottom surface; the ITO patterned layer is processed with for the ITO function pattern of realizing capacitive touch function; the insulation course sputter is in ITO patterned layer bottom surface; the conductive layer sputter is in the insulation course bottom surface; the conductive layer bottom surface also is coated with the SiO2 diaphragm, the FPC component binding in COVER LENS substrate layer bottom surface and with the conducting of ITO function pattern.
This integrated capacitive touch screen will realize that the ITO function pattern of capacitive touch function is set directly at COVER LENS substrate layer bottom surface, the function of script functional layer is integrated on the COVER LENS substrate layer, thereby save OCA glue-line and ITO SENSORS function substrate, this not only can significantly reduce the integral thickness of capacitive touch screen, light source is sent the process of rear arrival human eye from LCD, only pass through the loss of COVER LENS substrate layer, thereby significantly improve transmittance, reduce the power consumption of portable type electronic product.And ITO function pattern is set directly at COVER LENS substrate layer bottom surface, save and make the necessary bonding process of traditional capacitance touch screen, be conducive to simplify production process, improve yields, and can reduce the spending on bonding process equipment, reduce operating cost.
Below be the method for making of above-mentioned integrated capacitive touch screen, may further comprise the steps:
One, get glass substrate cleaning after, through tempering, baking, cleaning, glass substrate is cut into the COVER LENS substrate layer of preliminary dimension specification, this step is specially again: will put into the annealing furnace tempering after the glass substrate cleaning, and toast, clean, cut according to conventional way.After the glass substrate cutting, carve and clean, toast through CNC, carry out again silk-screen, oven dry, the COVER LENS substrate layer of making at last the preliminary dimension specification is stand-by.
Two, the COVER LENS substrate layer that step 1 is made after cleaning, baking, its bottom surface sputter ITO film again, cleaning, baking and sputter ITO film all adopt conventional way to get final product.
Three, process the ITO function pattern that needs at the ITO film according to the preset function pattern, make direct sputter in the ITO patterned layer of COVER LENS substrate layer bottom surface, adopt the conventional way in the industry to get final product, by operations such as applying glue, development, exposure, etching, stripping glue, process default ITO function pattern at the ITO film according to predetermined pattern;
Four, process predetermined pattern at ITO patterned layer bottom surface sputter insulation course, and at insulation course; At insulation course bottom surface conducting layer sputtering, and process predetermined pattern at conductive layer; Apply the SiO2 diaphragm in the conductive layer bottom surface;
Five, with the FPC component binding on COVER LENS substrate layer.
During actual production, carry out after also glass substrate cutting action in the above-mentioned steps one can being adjusted at step 4, also namely after the armor coated operation in conductive layer bottom surface, again glass substrate is cut into the COVER LENS substrate layer of preliminary dimension specification.
The topmost innovative point of this integrated capacitive touch screen method for making is at COVER LENS substrate layer bottom surface sputter ITO film, and process the ITO function pattern that needs according to the preset function pattern at the ITO film, so that ITO function pattern is set directly at COVER LENS substrate layer bottom surface.
Above-described embodiment is preferred implementation of the present invention, and in addition, the present invention can also have other implementations.That is to say that under the prerequisite that does not break away from the present invention's design, any apparent replacement also should fall within protection scope of the present invention.
Claims (2)
1. the method for making of an integrated capacitive touch screen, described integrated capacitive touch screen comprises COVER LENS substrate layer (1), ITO patterned layer (2), insulation course (3), conductive layer (4), protective seam (5) and be bundled in FPC assembly on the COVER LENS substrate layer, the direct sputter of described ITO patterned layer (2) is in COVER LENS substrate layer (1) bottom surface, ITO patterned layer (2) is processed with for the ITO function pattern of realizing capacitive touch function, described insulation course (3) sputter is in ITO patterned layer (2) bottom surface, described conductive layer (4) sputter is in insulation course (3) bottom surface, described conductive layer (4) bottom surface also is coated with protective seam (5), described FPC component binding in COVER LENS substrate layer bottom surface and with the conducting of ITO function pattern; Described protective seam (5) is SiO
2Diaphragm; The method for making of described integrated capacitive touch screen may further comprise the steps:
One, get glass substrate cleaning after, through tempering, baking, cleaning, again glass substrate is cut into the COVER LENS substrate layer of preliminary dimension specification;
Two, the COVER LENS substrate layer that step 1 is made is after cleaning, baking, at its bottom surface sputter ITO film;
Three, process the ITO function pattern that needs according to the preset function pattern at the ITO film, make direct sputter in the ITO patterned layer of COVER LENS substrate layer bottom surface;
Four, process predetermined pattern at ITO patterned layer bottom surface sputter insulation course, and at insulation course; At insulation course bottom surface conducting layer sputtering, and process predetermined pattern at conductive layer; Armor coated in the conductive layer bottom surface;
Five, with the FPC component binding on COVER LENS substrate layer.
2. the method for making of integrated capacitive touch screen according to claim 1 is characterized in that: the described COVER LENS substrate layer that glass substrate is cut into the preliminary dimension specification is to carry out after described step 4 is finished.
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| CN102722301B (en) * | 2012-05-23 | 2016-01-20 | 浙江星星瑞金科技股份有限公司 | A kind of method for making of capacitance touch screen |
| CN102722304B (en) * | 2012-06-21 | 2015-09-16 | 中山新诺科技有限公司 | A kind of joint way prepares the method for touch-screen |
| CN102999214A (en) * | 2012-09-27 | 2013-03-27 | 苏州安洁科技股份有限公司 | Production technology of contact positioning touchpad |
| CN103076931A (en) * | 2012-11-29 | 2013-05-01 | 漳州宝发光电科技有限公司 | Capacitive type touch panel of composite substrate and production process thereof |
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| CN101989161A (en) * | 2009-07-30 | 2011-03-23 | 华森电子科技股份有限公司 | Projected capacitive touch panel and manufacturing method thereof |
| CN202177886U (en) * | 2011-08-24 | 2012-03-28 | 格林精密部件（惠州）有限公司 | Integrated type capacitance touch screen with less thickness, high light transmittance and low cost |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101989161A (en) * | 2009-07-30 | 2011-03-23 | 华森电子科技股份有限公司 | Projected capacitive touch panel and manufacturing method thereof |
| CN202177886U (en) * | 2011-08-24 | 2012-03-28 | 格林精密部件（惠州）有限公司 | Integrated type capacitance touch screen with less thickness, high light transmittance and low cost |
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Address after: 516025 Huizhou City, Guangdong Province, the three digital Industrial Park Patentee after: Guangdong Green precision parts Limited by Share Ltd Address before: 516025 Guangdong Province, Huicheng City, the town of the District of the town of Digital Industrial Park North District, three Patentee before: Green Precision Components (Huizhou) Co. Ltd. |