CN1314298C - Test device and method for flat panel display - Google Patents
Test device and method for flat panel display Download PDFInfo
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- CN1314298C CN1314298C CNB031222994A CN03122299A CN1314298C CN 1314298 C CN1314298 C CN 1314298C CN B031222994 A CNB031222994 A CN B031222994A CN 03122299 A CN03122299 A CN 03122299A CN 1314298 C CN1314298 C CN 1314298C
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Abstract
A testing device and method for flat panel display is disclosed, which uses a shared modulator to generate the lighting signal required by testing the flat panel display of different models. When the line is changed, the selection is switched by matching with the change-over switch, so that the purposes of shortening the line changing time, saving the working hour and cost and improving the product profit are achieved.
Description
Technical field
The invention relates to a kind of testing apparatus, 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, GPS (Global Position System) (GPS), hand held electronic game, translating machine and electronic watch 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 | 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 | 150 minutes |
| Every board accounts for man-hour every day percentage 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 percentage 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 productivity, 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 testing apparatus comprises diverter switch and shared modulator.Diverter 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 diverter 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 diverter switch of this testing apparatus 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 DC power 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 diverter 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 testing apparatus 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 diverter 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 flow chart of the present invention.
Symbol description
100 testing apparatuss
110 diverter switches
120 shared modulators
121,122 output links
130 DC power 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 testing apparatus 100 comprises diverter 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 testing time, 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 diverter switch 110, the input power supply modulation of being imported by DC power supply generator 130 among the figure is produced the required lighting signals of test flat-panel screens, the output of DC power supply generator 130 wherein for example is the DC power 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 | | 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
Diverter 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 diverter 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 flow chart of above-mentioned testing apparatus.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 diverter 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 testing apparatus 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 percentage 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 percentage 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 diverter 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 (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031222994A CN1314298C (en) | 2003-04-24 | 2003-04-24 | Test device and method for flat panel display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031222994A CN1314298C (en) | 2003-04-24 | 2003-04-24 | Test device and method for flat panel display |
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| CN1540359A CN1540359A (en) | 2004-10-27 |
| CN1314298C true CN1314298C (en) | 2007-05-02 |
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| CNB031222994A Expired - Fee Related CN1314298C (en) | 2003-04-24 | 2003-04-24 | Test device and method for flat panel display |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054412B (en) * | 2009-11-09 | 2013-03-13 | 纬创资通股份有限公司 | Shared power supply and monitor to detect different motherboard circuit equipment and switching devices |
| 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) |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1240103A (en) * | 1997-01-31 | 1999-12-29 | 摩托罗拉公司 | 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 |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1240103A (en) * | 1997-01-31 | 1999-12-29 | 摩托罗拉公司 | 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 |
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| CN1540359A (en) | 2004-10-27 |
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Granted publication date: 20070502 Termination date: 20130424 |