CN101982783B - Process for testing capacitance type touch screen - Google Patents
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- CN101982783B CN101982783B CN 201010512743 CN201010512743A CN101982783B CN 101982783 B CN101982783 B CN 101982783B CN 201010512743 CN201010512743 CN 201010512743 CN 201010512743 A CN201010512743 A CN 201010512743A CN 101982783 B CN101982783 B CN 101982783B
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- 229910052802 copper Inorganic materials 0.000 claims description 2
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Abstract
The invention relates a capacitance type touch screen testing process by simulating a human hand to touch a touch screen of a mobile phone by multiple points. The process adopts the method of simulating the human hand to touch the touch screen of the mobile phone by multiple points, and multipoint simulated human hand touch action is completed by a special touch screen tester, so that points to be tested cover the effective range of the whole screen. Before testing, a thin metal plate cap of a pneumatic touch head is in a non-stressed state, the thin metal plate cap maintains a normal-state shape, at the moment, the pneumatic touch head and a detected point of the touch screen are in clearance contact; when testing, an air pipe is connected with an air source, under the action of air pressure, the thin metal plate cap is elastically deformed to protrude downwards, the conductive rubber on the surface of the thin metal plate cap simulates fingers of the human hand to press the detected point of the touch screen; when the air source is cut by the air pipe, the thin metal plate cap is recovered to the normal-state shape; and a test chip circuit is connected with a capacitor of the detected point of the touch screen, and a singlechip determines the touch position by measuring capacitor changes and acquires capacitor changing information.
Description
Technical field
The present invention relates to the testing electrical property technology of touch-screen, particularly a kind of anthropomorphic hand of multi-point mould of taking touches handset touch panel situation, the capacitive touch screen test technology of testing.
Background technology
At present, the handset touch panel method of testing has four kinds usually: 1. and 2 simulation tests, 2. adopt the circuit board and chip test, 3. installation test, 4. product line property testing.
Method one adopts the method for 2 simulation tests, and its test position can not cover whole touch scope, just carries out simulation test to crucial 2, can not carry out complete detection to the pattern and the silver-colored line of all ITO films;
Method two adopts the method for circuit board and chip test, is that research and development test products parameter consistency is carried out statistical study, does not directly provide the non-defective unit defective products and judges, judges non-defective unit and defective products according to statistic analysis result, unsuitable batch process the in batches;
Method three is to adopt the installation test, and the method more complicated, advantage are to test more intuitively, and the test effect is better, shortcoming be the installation test if any defective products, the machine of need tearing open changes part, increases man-hour, influences manufacturing schedule;
Method four adopts the test of product line property testing appearance more directly perceived, and the test effect is better, but test speed is slower, and bulk article needs all tests, takes the testing efficiency of the method lower.
The situation of comprehensive above-mentioned various handset touch panel test technologies, the testing electrical property technology of existing touch-screen is improved and innovated is very necessary.
Summary of the invention
Deficiency in view of above-mentioned prior art; The object of the invention is exactly; Design a kind of testing touch screen technology that adopts the anthropomorphic hand of multi-point mould to touch handset touch panel; For realizing that this technology develops special-purpose tester, the handset touch panel test process is reached: simple, convenient and suitable batch process.
The objective of the invention is to realize through such technical scheme; A kind of capacitive touch screen test technology; It is characterized in that: the anthropomorphic hand of said process using multi-point mould touches the method for handset touch panel; Realize the anthropomorphic hand touch action of multi-point mould by special-purpose testing touch screen appearance, make test point cover the effective range of whole touch screen; Said testing touch screen appearance comprises by monolithic processor controlled test chip circuit, instrument casing, pneumatic touch head, tracheae, the touch headstock, touches a floating holder and testing touch screen interface board; The test chip circuit places in the instrument casing, and the test chip circuit connects the built-in touch screen interface of testing touch screen interface board through terminal interface and winding displacement; Pneumatic touch head is made up of metal tube and thin metal dish cap, on the screw thread of metal tube bottom, screws in thin metal dish cap; Thin metal dish cap surface is pasted one deck conductive rubber, metal tube upper end grafting tracheae, and the tracheae other end connects air pump; Tested touch-screen is positioned on the testing touch screen interface board, before the test, makes the whole measured point of a pneumatic touch gap contact touch-screen; During test, when tracheae connects source of the gas, under the effect of air pressure; Make the thin metal dish cap distortion protrusion that adopts the Thin Elastic metal material, the conductive rubber anthropomorphic dummy finger presses touch-screen measured point of thin metal dish cap surface; Control the break-make of tracheae source of the gas by test chip circuit control electric air pump switch; The test process of the technology of said capacitive touch screen test comprises the steps:
Before step 1, the test, the thin metal dish cap of pneumatic touch head is in the not state of pressurized, and thin metal dish cap keeps the normality shape, and this moment, pneumatic touch head contacted with gap, touch-screen measured point;
When step 2, test, tracheae connects source of the gas, and under the effect of air pressure, thin metal dish cap elastic deformation is protruded downwards, the conductive rubber anthropomorphic dummy finger presses touch-screen measured point of thin metal dish cap surface;
The test chip circuit connects the electric capacity of tested testing touch screen point, and single-chip microcomputer is confirmed touch location through the variation of measuring electric capacity, and obtains capacitance variation information.
The beneficial effect that the present invention produces is: test position covers whole touch scope; Research and development test products parameter consistency is carried out statistical study; Can directly provide the non-defective unit defective products judges; Judge non-defective unit and defective products according to statistic analysis result, take the high suitable batch production of testing efficiency of the method; Accurate testing degree and work efficiency have been improved.
Description of drawings
Fig. 1 is a testing touch screen appearance synoptic diagram of the present invention;
Fig. 2 is a pneumatic touch synoptic diagram;
Fig. 3 is a tested product simulated touch point synoptic diagram.
Embodiment
To shown in Figure 3, touch-screen is surveyed appearance and is comprised by monolithic processor controlled test chip circuit, instrument casing 6, pneumatic touch 1, tracheae 2, touches the headstock 3, touches a floating holder 4 and testing touch screen interface board 5 like Fig. 1;
Also be provided with liquid crystal display terminal 7 and tolerance adjustment knob 8 on the instrument casing 6; The test chip circuit places in the tool housing 6, connects the built-in touch screen interface of testing touch screen anchor clamps through test circuit terminal interface plate 5 and winding displacement and is connected with product so that product is tested;
It is copper that thin metal dish cap 12 adopts the Thin Elastic metal material.
The present invention be directed to the electrical property detection that capacitive touch screen carries out.According to driver chip correlation technique parameter, design and produce special testing instrument, capacitive touch screen each item technical feature is detected.
The establishment corresponding testing program makes test operation simple, convenient; Operator is opened corresponding test procedure on computers; Computer and tester are communicated with the back operator and in tool, put into product to be tested on request, press testing button, and tester just can be tested automatically; And providing result of determination according to test data, computer carries out record to test data simultaneously.Operator can reach test purpose according to result of determination with the placement of classifying of non-defective unit, defective products.Record in the computer can be convenient to that the engineering staff effectively follows the trail of and bad analysis.
Auto test flow:
[test 1] power test: power input short circuit, open test
[test 2] connects test: the test board check of communicating by letter with the touch-screen module
[test 3] module version test: module hardware and software version checking
[test 4] passage short-circuit test: FPCB flexible-cable and chip short-circuit testing
[test 5] susceptibility test: the susceptibility check of whole passages and coordinate output and FPCB, chip, ITO pattern, the check of silver-colored circuit open circuit when the simulated touch input is arranged
[test 6] testing current: the check of module electric current (dynamically/static state)
For example: when the tested product test parameter reached each item test request, the tester viewing area can show " Pass ", is judged to be non-defective unit; One of test parameter or multinomial when not reaching test request, the tester viewing area can show " Fail ", is judged to be defective products.Operator can be deposited test back product classification, and non-defective unit changes operation down, and defective products is given the engineering staff.The engineering staff carries out bad analysis according to test record and defective products.Test and bad analytical work efficient have been improved.Lime light: in product is tested, can not mobile product, in order to avoid test is inaccurate, or cause the problem of testing tool fault and personal security aspect.Must wait product test to finish, provide that the test result rear is desirable to go out product.
Claims (3)
1. the technology of capacitive touch screen test; It is characterized in that: said process using multi-point mould human-imitated finger touches the method for handset touch panel; Realize multi-point mould human-imitated finger touch action by special-purpose testing touch screen appearance, make test point cover the effective range of whole touch screen; Said testing touch screen appearance comprises by monolithic processor controlled test chip circuit, instrument casing (6), pneumatic touch head (1), tracheae (2), touches the headstock (3), touches a floating holder (4) and testing touch screen interface board (5); The test chip circuit places in the instrument casing (6), and the test chip circuit connects the built-in touch screen interface of testing touch screen interface board (5) through terminal interface and winding displacement; Pneumatic touch head (1) is made up of metal tube (11) and thin metal dish cap (12), on the screw thread of metal tube (11) bottom, screws in thin metal dish cap (12); One deck conductive rubber (14) is pasted on thin metal dish cap (12) surface, metal tube (11) upper end grafting tracheae (2), and tracheae (2) other end connects air pump; Tested touch-screen is positioned on the testing touch screen interface board (5); Before the test, make the whole measured point of pneumatic touch head (1) gap contact touch-screen, during test; When tracheae (2) connects source of the gas; Under the effect of air pressure, make thin metal dish cap (12) the distortion protrusion that adopts the Thin Elastic metal material, conductive rubber (14) anthropomorphic dummy's finger presses touch-screen measured point on thin metal dish cap (12) surface; Control the break-make of tracheae (2) source of the gas by test chip circuit control electric air pump switch; Said instrument casing (6) is for touching the supporting mass of the headstock (3), passes 12 holes that touch on the headstock (3) by the end portion of 12 pneumatic touch heads (1) metal tubes (11), is installed in to touch on the floating holder (4), constitutes pneumatic touch head combination; Thin metal dish cap (12) one ends of each pneumatic touch head (1) are positioned at and touch the dull and stereotyped bottom of a floating holder (4); Touch on dull and stereotyped four jiaos of the headstock (3) sleeve pipe (9) respectively is housed; Touch on (4) four jiaos of the floating holders guide pillar (10) respectively is housed; Be slidingly matched through sleeve pipe (9) and guide pillar (10), the touch headstock (3) is slidingly connected and touches a floating holder (4); The guide pillar (10) that touches a floating holder (4) can go up and down along sleeve pipe (9) straight line; Sleeve pipe (9) side installs jackscrew additional can make a touch floating holder (4) location; The test process of said capacitive touch screen test technology comprises the steps:
Before step 1, the test, the thin metal dish cap (12) of pneumatic touch head (1) is in the not state of pressurized, and thin metal dish cap (12) keeps the normality shape, and this moment, pneumatic touch head contacted with gap, touch-screen measured point;
When step 2, test, tracheae (2) connects source of the gas, and under the effect of air pressure, thin metal dish cap (12) elastic deformation is protruded downwards, conductive rubber (14) anthropomorphic dummy's finger presses touch-screen measured point on thin metal dish cap (12) surface;
Step 3, when tracheae (2) cuts off source of the gas, thin metal dish cap (12) reverts to the normality shape;
The test chip circuit connects the electric capacity of tested testing touch screen point, and single-chip microcomputer is confirmed touch location through the variation of measuring electric capacity, and obtains capacitance variation information.
2. the technology of capacitive touch screen test according to claim 1; It is characterized in that: on the screw thread of metal tube (11) bottom of said pneumatic touch head (1); Screw in thin metal dish cap (12); Metal tube (11) upper end processing air pipe interface (13), tracheae (2) is plugged on the air pipe interface (13), air pipe interface (13) diameter and tracheae (2) internal diameter wringing fit.
3. the technology of capacitive touch screen test according to claim 1 or claim 2, it is characterized in that: the Thin Elastic metal material that thin metal dish cap (12) adopts is copper.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010512743 CN101982783B (en) | 2010-10-20 | 2010-10-20 | Process for testing capacitance type touch screen |
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| CN 201010512743 CN101982783B (en) | 2010-10-20 | 2010-10-20 | Process for testing capacitance type touch screen |
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| CN101982783A CN101982783A (en) | 2011-03-02 |
| CN101982783B true CN101982783B (en) | 2012-07-04 |
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| US8725443B2 (en) | 2011-01-24 | 2014-05-13 | Microsoft Corporation | Latency measurement |
| US8773377B2 (en) | 2011-03-04 | 2014-07-08 | Microsoft Corporation | Multi-pass touch contact tracking |
| US8914254B2 (en) | 2012-01-31 | 2014-12-16 | Microsoft Corporation | Latency measurement |
| US8913019B2 (en) | 2011-07-14 | 2014-12-16 | Microsoft Corporation | Multi-finger detection and component resolution |
| US8982061B2 (en) | 2011-02-12 | 2015-03-17 | Microsoft Technology Licensing, Llc | Angular contact geometry |
| US8988087B2 (en) | 2011-01-24 | 2015-03-24 | Microsoft Technology Licensing, Llc | Touchscreen testing |
| US9317147B2 (en) | 2012-10-24 | 2016-04-19 | Microsoft Technology Licensing, Llc. | Input testing tool |
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| US8725443B2 (en) | 2011-01-24 | 2014-05-13 | Microsoft Corporation | Latency measurement |
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| US9542092B2 (en) | 2011-02-12 | 2017-01-10 | Microsoft Technology Licensing, Llc | Prediction-based touch contact tracking |
| US8773377B2 (en) | 2011-03-04 | 2014-07-08 | Microsoft Corporation | Multi-pass touch contact tracking |
| US8913019B2 (en) | 2011-07-14 | 2014-12-16 | Microsoft Corporation | Multi-finger detection and component resolution |
| US9378389B2 (en) | 2011-09-09 | 2016-06-28 | Microsoft Technology Licensing, Llc | Shared item account selection |
| US9785281B2 (en) | 2011-11-09 | 2017-10-10 | Microsoft Technology Licensing, Llc. | Acoustic touch sensitive testing |
| US8914254B2 (en) | 2012-01-31 | 2014-12-16 | Microsoft Corporation | Latency measurement |
| US9317147B2 (en) | 2012-10-24 | 2016-04-19 | Microsoft Technology Licensing, Llc. | Input testing tool |
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