CN1540359A - Device and method for testing panel display - Google Patents

Device and method for testing panel display Download PDF

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Publication number
CN1540359A
CN1540359A CNA031222994A CN03122299A CN1540359A CN 1540359 A CN1540359 A CN 1540359A CN A031222994 A CNA031222994 A CN A031222994A CN 03122299 A CN03122299 A CN 03122299A CN 1540359 A CN1540359 A CN 1540359A
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CN
China
Prior art keywords
flat
panel screens
proving installation
test
modulator
Prior art date
Application number
CNA031222994A
Other languages
Chinese (zh)
Other versions
CN1314298C (en
Inventor
林F保
林旻保
Original Assignee
统宝光电股份有限公司
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Priority to CNB031222994A priority Critical patent/CN1314298C/en
Publication of CN1540359A publication Critical patent/CN1540359A/en
Application granted granted Critical
Publication of CN1314298C publication Critical patent/CN1314298C/en

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Abstract

The device uses a sharing type modulator to generate lighting signals needed by panel displays in different types. When wire is changed, the device changes selection to be assorted with changeover switch in order to reduce time for changing wire and increase profit.

Description

Plane display testing device and method
Technical field
The invention relates to a kind of proving installation, and particularly relevant for a kind of plane display testing device and method.
Background technology
Flat-panel screens is widely used recently, to replace cathode-ray tube display (CRT).Improvement along with semiconductor technology, make flat-panel screens have advantages such as low consumption of electric power, slim amount is light, resolution is high, color saturation is high, the life-span is long, thereby be widely used in the electronic product closely bound up such as digital camera, mobile computer, desktop display, mobile phone, PDA(Personal Digital Assistant), automobile-used TV, Global Positioning System (GPS) (GPS), hand held electronic game, translation machine and accutron with life.
The material of flat-panel screens accounts for more than 70% of whole production cost, and all the other costs are nothing more than time cost, barrel bolt cost, equipment amortized cost, after service cost or the like.The material technology of flat-panel screens is all grasped on national champions such as Japan and Korea S. at present, therefore, company once tame production flat-panel screens need reduce its time cost, barrel bolt cost, equipment amortized cost, after service cost etc. as much as possible, and improves its product quality, to seek its profit space.Wherein, time cost again with test man-hour shared ratio the highest, and long test man-hour, often representing higher time cost and equipment amortized cost.Therefore, how shortening the test man-hour of flat-panel screens, is to become the important topic that improves its earning capacity.
Yet, in order to cater to the changeable demand in market, manufacturer often must produce the flat-panel screens of different size simultaneously, thereby on production line for example burn-in test (aging), final test (final inspection) light a lamp check and shipment before QC check (OQC) etc., often need to change the modulator (inverter) of corresponding specification according to different machines, to carry out its test action, the old friend, the time of changing modulator when at every turn changing production line (thread-changing) will occupy the test part in man-hour.As shown in Table 1:
Action Burn-in test The inspection of lighting a lamp
The time of normal output a slice 240 minutes 0.75 divide
The time A that every board is changed modulator at every turn annotates: with 50 of every board tests is example 30 minutes 0.75 divide
Thread-changing every day number of times B 5 times 5 times
Every board required conversion time C=A*B every day 150 minutes 3.75 divide
Module line board is counted D 25 40
The total conversion time E=C*D of module line every day 3750 minutes 150 minutes
Every board accounts for man-hour every day number percent C/F and annotates: with F=20 hour man-hour every day be example 12.50% 0.31%
The total conversion time of module line every day accounts for number percent E/F in man-hour, annotates: with F=20 hour man-hour every day be example 312.50% 12.50%
Table one
Table one is checked required conversion time table for lighting a lamp of burn-in test and final test, show in the table, every board is changed the conversion time of modulator, in the inspection of lighting a lamp, occupied 0.31% of man-hour every day, in burn-in test, then more occupy 12.5% of man-hour every day, these conversion times do not have yield-power, just can effectively reduce, to improve the time of product profit.
Summary of the invention
In view of this, the invention provides a kind of plane display testing device and method, the conversion time when it can effectively reduce the flat-panel screens test is to improve product profit.
For reaching above-mentioned and other purpose, the invention provides a kind of plane display testing device, this proving installation comprises change-over switch and shared modulator.Change-over switch is in order to the machine of the flat-panel screens of selection desire test.Shared modulator then in order to the selection of foundation change-over switch, produces the required lighting signals of test flat-panel screens with an input power supply modulation.
In the preferred embodiment of the present invention, the change-over switch of this proving installation is to use the electric resistance partial pressure method to produce different control voltage, to control shared modulator, produces different lighting signals.Preferably, this shared modulator can connect the plural fluorescent tube of flat-panel screens simultaneously, so that test has the flat-panel screens of plural fluorescent tube.Wherein the input power supply of shared modulator is that direct supply generator by a 12V provides, and the specification of lighting signals then has:
1. tube voltage 800V, tube current 6mA and frequency 65KHz.
2. tube voltage 700V, tube current 6mA and frequency 55KHz.
3. tube voltage 600V, tube current 6mA and frequency 45KHz.
4. tube voltage 550V, tube current 6mA and frequency 35KHz.Wait several different specifications, with the flat-panel screens of test different size.
In addition, the present invention provides a kind of method of testing in addition, is applicable to connect the shared modulator of a switching switch, and test flat-panel screens, this method of testing comprises the following steps: at first to connect shared modulator and flat-panel screens with high-pressure connection line; Again change-over switch is switched to the position that meets this flat-panel screens machine; Open the power supply of shared modulator then, test beginning.
By in the above-mentioned explanation as can be known owing to when using proving installation of the present invention and method to test the flat-panel screens of different size, need not change the modulator of corresponding specification, the substitute is simply and switch selection with change-over switch.Therefore, can reduce the conversion time of flat-panel screens test effectively, and then reach the saving time cost, improve the purpose of product profit.
Description of drawings
The 1st figure is a kind of plane display testing device and the connection diagram thereof that shows the preferred embodiment according to the present invention; And
The 2nd figure shows according to method of testing process flow diagram of the present invention.
Symbol description
100 proving installations
110 change-over switches
120 shared modulators
121,122 output links
130 direct supply generators
140 flat-panel screens
141,142 input links
150,160 high-pressure connection lines
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, hereinafter special with preferred embodiment, and cooperate appended graphicly, be described in detail below:
Please refer to shown in the 1st figure, it is a kind of plane display testing device and connection diagram thereof according to a preferred embodiment of the present invention.Show among the figure that this proving installation 100 comprises change-over switch 110 and shared modulator 120.Wherein, the flat-panel screens of the different size that cause is produced on production line, it is also inequality that it tests required lighting signals specification, for fear of when the thread-changing, again and again change the different size modulator, so that cause the delay of test duration, and effectively reduce the test man-hour of flat-panel screens, to save time cost, so design one shared modulator 120, in order to the selection of foundation change-over switch 110, the input power supply modulation of being imported by direct supply generator 130 among the figure is produced the required lighting signals of test flat-panel screens, the output of direct supply generator 130 wherein for example is the direct supply of 12V.
In the present embodiment, shared modulator 120 is to make according to the specification of following table two:
Project Title Minimum value Representative value Maximal value Remarks
1 Tube voltage (V) 500 800 Alternating current
2 Tube current (mA) 5 6 7 Alternating current
3 Activation voltage (V) 1000 1400 Alternating current
4 Fluorescent tube frequency (KHz) 50 65
5 Input power supply (V) 10 12 13 Direct current
6 Switching point voltage (V) 0 5 Direct current
7 Can connect the fluorescent tube number 2
Table two
Change-over switch 110 then is divided into 4 sections to be selected, and the lighting signals specification that each section produced is as follows:
1. tube voltage 800V, tube current 6mA and frequency 65KHz.
2. tube voltage 700V, tube current 6mA and frequency 55KHz.
3. tube voltage 600V, tube current 6mA and frequency 45KHz.
4. tube voltage 550V, tube current 6mA and frequency 35KHz.
Therefore the connectable light pipe number of shared modulator 120 is 2, so as shown in the figure, it has two output links such as 121 and 122, can use high-pressure connection line 150 and 160 respectively, via two output links such as 121 and 122, be connected to the input link 141 and 142 of flat-panel screens 140 to be measured, with with change-over switch 110 lighting signals according to the selected shared modulator 120 of machine of flat-panel screens 140 to be measured, deliver to flat-panel screens 140 to be measured, and then light the fluorescent tube of flat-panel screens 140 to be measured.Though the flat-panel screens to be measured 140 that paint in this place has two fluorescent tubes, right as to be measured machine is for only there being a fluorescent tube person, then if connect 121 and 122 etc. two export link wherein one.
Generally speaking, but the control kenel working voltage of modulator control or Current Control, but because of the circuit of Current Control kenel comparatively complexity and cost height, therefore, present embodiment adopts the electric resistance partial pressure method to produce different control voltage, to control shared modulator 120, produces different lighting signals.
Please refer to shown in the 2nd figure, it is for using the method for testing process flow diagram of above-mentioned proving installation.When test, at first in S210, be connected shared modulator 120 and flat-panel screens 140 with 160 with high-pressure connection line 150, in S220, judge then not thread-changing is arranged, if any then the type because of flat-panel screens to be measured is different, so program enters S230, select corresponding machine with change-over switch 110, in S240, open the power supply of shared modulator 120 then, test beginning.Anti-, when judging not thread-changing at S220, then directly enter among the S240, open the power supply of shared modulator 120, test beginning, and when test comes to an end, just enter S250 closing the power supply of shared modulator 120, and remove high-pressure connection line 150 and 160, enter the test that S260 judges whether to proceed down a slice then, then repeat the step of S210 in this way, otherwise finish test.
Please refer to table three, it is the conversion time table after above-mentioned proving installation of application and the method:
Action Burn-in test The inspection of lighting a lamp
The time of normal output a slice 240 minutes 0.75 divide
The time A that every board is changed modulator at every turn annotates: with 50 of every board tests is example 5 minutes 0.083 divide
Thread-changing every day number of times B 5 times 5 times
Every board required conversion time C=A*B every day 25 minutes 0.417 divide
Module line board is counted D 25 40
The total conversion time E=C*D of module line every day 625 minutes 16.667 divide
Every board accounts for man-hour every day number percent C/F and annotates: with F=20 hour man-hour every day be example 2.08% 0.03%
The total conversion time of module line every day accounts for number percent E/F in man-hour, annotates: with F=20 hour man-hour every day be example 52.08% 1.39%
Table three
Show in the table three that every board is changed the conversion time of modulator, in the inspection of lighting a lamp, occupied by table one and dropped to 0.03% 0.31% of man-hour every day, in burn-in test, then occupy and drop to 2.08% 12.5% of man-hour every day by table one.The old friend, use a kind of plane display testing device of the present invention and method, when testing the various flat-panel screens of different size, because of the thread-changing action only needs to select with change-over switch, it is the conversion time that can significantly reduce the flat-panel screens test, and then reach the saving time cost, improve the purpose of product profit.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.

Claims (10)

1. a proving installation is applicable to test one flat-panel screens, comprising:
One switches switch, in order to the machine of this flat-panel screens of selecting the desire test; And
One shared modulator in order to the selection according to this change-over switch, produces the required signal of lighting a lamp of this flat-panel screens of test with an input power supply modulation.
2. as proving installation according to claim 1, when this change-over switch is switched, be to use the electric resistance partial pressure method to produce different control voltage wherein, with this shared modulator of control, modulation produces this different lighting signals.
3. proving installation according to claim 1, wherein this shared modulator can connect the plural fluorescent tube of this flat-panel screens simultaneously.
4. proving installation according to claim 1, wherein this input power supply direct supply that is 12V.
5. proving installation according to claim 4, wherein this input power supply is provided by a direct current power supply generator.
6. proving installation according to claim 1, wherein the specification of this lighting signals is tube voltage 800V, tube current 6mA and frequency 65KHz.
7. proving installation according to claim 1, wherein the specification of this lighting signals is tube voltage 700V, tube current 6mA and frequency 55KHz.
8. proving installation according to claim 1, wherein the specification of this lighting signals is tube voltage 600V, tube current 6mA and frequency 45KHz.
9. proving installation according to claim 1, wherein the specification of this lighting signals is tube voltage 550V, tube current 6mA and frequency 35KHz.
10. a method of testing is applicable to connect a shared modulator of a switching switch, tests a flat-panel screens, comprises the following steps:
Connect this shared modulator and this flat-panel screens with high-pressure connection line;
This change-over switch is switched to the position that meets this flat-panel screens machine; And
Open the power supply of this shared modulator, to begin test.
CNB031222994A 2003-04-24 2003-04-24 Device and method for testing panel display CN1314298C (en)

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CN1314298C CN1314298C (en) 2007-05-02

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102054412A (en) * 2009-11-09 2011-05-11 纬创资通股份有限公司 Device for detecting different motherboard circuits by commonly using power supply and display and switching device
CN102169665A (en) * 2011-03-17 2011-08-31 华容电子(昆山)有限公司 Mainboard testing controller of liquid crystal display (LCD) and liquid crystal display television (LCDTV)
CN104516132A (en) * 2014-11-21 2015-04-15 京东方科技集团股份有限公司 Testing fixture
US9880407B2 (en) 2014-11-21 2018-01-30 Boe Technology Group Co., Ltd. Test fixture for electrical function test of product to be tested

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5994847A (en) * 1997-01-31 1999-11-30 Motorola Inc. Electronic ballast with lamp current valley-fill power factor correction
TW518854B (en) * 2001-10-26 2003-01-21 Domex Technology Corp Network burner system and the method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102054412A (en) * 2009-11-09 2011-05-11 纬创资通股份有限公司 Device for detecting different motherboard circuits by commonly using power supply and display and switching device
CN102054412B (en) * 2009-11-09 2013-03-13 纬创资通股份有限公司 Device for detecting different motherboard circuits by commonly using power supply and display, and switching device
CN102169665A (en) * 2011-03-17 2011-08-31 华容电子(昆山)有限公司 Mainboard testing controller of liquid crystal display (LCD) and liquid crystal display television (LCDTV)
CN104516132A (en) * 2014-11-21 2015-04-15 京东方科技集团股份有限公司 Testing fixture
US9880407B2 (en) 2014-11-21 2018-01-30 Boe Technology Group Co., Ltd. Test fixture for electrical function test of product to be tested
CN104516132B (en) * 2014-11-21 2018-02-06 京东方科技集团股份有限公司 A kind of measurement jig

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