CN101299315A - Test system for display panel - Google Patents

Test system for display panel Download PDF

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Publication number
CN101299315A
CN101299315A CNA2008101282851A CN200810128285A CN101299315A CN 101299315 A CN101299315 A CN 101299315A CN A2008101282851 A CNA2008101282851 A CN A2008101282851A CN 200810128285 A CN200810128285 A CN 200810128285A CN 101299315 A CN101299315 A CN 101299315A
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China
Prior art keywords
display panel
current measurement
module
test
test system
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CNA2008101282851A
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Chinese (zh)
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CN101299315B (en
Inventor
齐文生
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AU Optronics Suzhou Corp Ltd
AU Optronics Corp
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AU Optronics Suzhou Corp Ltd
AU Optronics Corp
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Priority to CN2008101282851A priority Critical patent/CN101299315B/en
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Publication of CN101299315B publication Critical patent/CN101299315B/en
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Abstract

A display panel test system is used for executing the test process for a plurality of display panels. The rest process includes a display test process and a current measurement process. The display panel test system includes a processing module, a sensing module, a power module and a current measurement module, wherein the processing module is used for receiving the instructions to perform the recordable process, record a plurality of display data onto each display panel, and perform the display test process by the recordable data; the sensing module is used for receiving the display panel test result generated according to the display test process, and transmitting the display panel test result to the process module; the power module is used for providing a recordable voltage directly for the display panel; and a current measurement module is connected with the power module and the display panel; the power module provides the display panel analog voltage and the logic voltage in turn through the current measurement module for executing the current measurement process.

Description

Test system for display panel
Technical field
The present invention relates to a kind of test system for display panel, particularly relate to a kind of in order to a plurality of display panels are carried out the test system for display panel of test process.
Background technology
No matter display panel is all to be widely used on computing machine, TV, hand-hold communication device.Wherein, except the lifting of manufacturing technology, how designing a test macro display panel is carried out common voltage test, test pixel and the testing current of pel array, to promote the product percent of pass of shipment, is a crucial ring.
When the design test system, mainly testing process was divided into burning (One timeprogram one time in the past; OTP), drive signal and the detection of pixel signal, backlight module assembling, testing current and shipment quality management and control (Out-going Quality Control; OQC).Wherein, topmost content measurement is divided into a burning, drive signal and the pixel signal detects and the testing current three phases, and wherein in burning stage, system once only can carry out the action of burning to a slice display panel; And testing current is in the stage owing to need test at the aanalogvoltage and the logic voltage of display panel, so each panel must external two digital multimeter to measure corresponding electric current respectively.And, set up corresponding above-mentioned three phases three different test macros need hardware resource, not only cause the raising of testing cost, and, more be helpless to promote the efficient of test owing to can't carry out simultaneously and must test separately stage by stage.And, at the test macro of different phase, all need the operator manually change test panel to different test macros, also will be one of great cost for expending of manpower.These characteristics all make usefulness, time cost, the hardware cost of test system for display panel more and more not apply the demand of reality.
Therefore, how designing a new test system for display panel, to overcome above-mentioned shortcoming, is the industry problem demanding prompt solution.
Summary of the invention
The invention provides a kind of test system for display panel, in order to a plurality of display panels are carried out a test process simultaneously, test process comprises and shows test process and current measurement process, and test system for display panel comprises: processing module, sensing module, power module and current measurement module.Processing module to carry out the burning process, is burned onto each display panel with a plurality of video datas, and shows test process by burning data in order to receive instruction; The display panel test result that sensing module produces according to the demonstration test process in order to the reception display panel, and transmit the display panel test result to processing module; Power module is in order to directly to provide display panel each burning voltage; And current measurement module, connect power module and display panel, power module also provides display panel aanalogvoltage and logic voltage in regular turn by current measurement module, in order to carry out the current measurement process, make display panel produce corresponding electric current respectively to current measurement module, current measurement module further produces current measurement result and is sent to this processing module.
The invention has the advantages that and to utilize the processing module that to carry out multiplex's operating capability to test a plurality of display panels simultaneously, and can integrate and show test and current measurement process in a system, and reach above-mentioned purpose easily.
Behind the embodiment of figure and description subsequently, those skilled in the art of the present technique can understand purpose of the present invention near consulting, and technological means of the present invention and enforcement aspect.
Description of drawings
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of accompanying drawing:
Fig. 1 is the calcspar of a test system for display panel of the first embodiment of the present invention;
Fig. 2 is the current measurement module calcspar further of the test system for display panel of the first embodiment of the present invention; And
Fig. 3 is divided into a operational flowchart after two groups for a test system for display panel of the first embodiment of the present invention with display panel.
The reference numeral explanation
1: test system for display panel 10,11,12,13: display panel
10a-13a: analog voltage input 10b-13b: logic voltage input end
100: processing module 101: instruction
102: sensing module 103: video data
104: power module 105: the display panel test result
106: current measurement module 107: burning voltage
108: digital multimeter 109: aanalogvoltage
Switch 111 in 110: the first: logic voltage
112: second switch 113: electric current
114: reminding module 117:RS232 PORT COM
115: internal integration circuit 121: system state
Embodiment
Please refer to Fig. 1, be the calcspar of the test system for display panel 1 of the first embodiment of the present invention.Test system for display panel 1 is in order to carry out test process to four display panels 10,11,12 and 13.In other embodiment, the number of display panel is not limited to four, and those skilled in the art can change the design of system easily and the display panel of different numbers is tested.Test process comprises and shows test process and current measurement process.Test system for display panel 1 comprises: processing module 100, sensing module 102, power module 104 and current measurement module 106.Processing module 100, is burned onto each display panel with a plurality of video datas 103 and shows test process to carry out the burning process in order to receive an instruction 101.Wherein, the display panel of the instruction 101 corresponding different models that received of processing module 100.Video data 103 comprises a pixel cell common voltage, red pixel data, a blue pixel data and green pixel data, holds in video data 103 to predict display panel 10-13, whether can demonstrate correct picture normally.Certainly, video data 103 also can comprise the data that other influence the display frame of display panel, and is not limit by above-mentioned data content.The display panel test result 105 that sensing module 102 produces according to the demonstration test process in order to reception display panel 10-13, and transmit display panel test result 105 to processing module 100.Whether display panel test result 105 is mainly a display panel pixel GTG value, normal with brightness and the color that predicts display panel 10-13.
Fig. 2 is a further calcspar of current measurement module 106.Contrast Fig. 1 simultaneously, power module 104 is in order to display panel 10-13 directly to be provided each burning voltage 107, to carry out aforesaid burning process.Current measurement module 106 connects power module 104 and display panel 10-13, comprises digital multimeter 108, plural number to first switch 110 and second switch 112.Each corresponds to an analog voltage input 10a-13a and the logic voltage input end 10b-13b of each display panel 10-13 in fact to first switch 110, and power module 104 provides each display panel 10-13 one aanalogvoltage 109 and a logic voltage 111.Too complicated because avoid drawing, only show display panel 10 pairing a pair of first switches 110 at this.Second switch 112 is electrically connected at digital multimeter 108.When a display panel, for instance, display panel 10 is not when carrying out the current measurement process, a pair of first switch 110 that corresponds to display panel 10 directly electrically connects power module 104 and display panel 10, and second switch 112 does not then electrically connect with display panel 10.When display panel 10 is carried out the current measurement process, first switch 110 of corresponding display panel 10 disconnects in regular turn, 112 two ends that are electrically connected to disconnection in regular turn of second switch, and make power module 104 to provide aanalogvoltage 109 and logic voltage 111 to display panel 10, and further make display panel 10 produce the digital multimeter 108 of a corresponding electric current 113 to the current measurement module 106 by the digital multimeter in the current measurement module 106 108.Digital multimeter 108 produces a current measurement result (not shown) behind the electric current 113 that receives display panel 10, and transmits current measurement result to processing module 100.
Each burning voltage 107 of the described power module 104 display panel 10-13 of leading portion and aanalogvoltage 109 is provided and logic voltage 111 make current measurement module 106 to carry out the current measurement process, be by an internal integration circuit (Inter-integrated circuit by processing module 100; IIC) 115 control power modules 104 and realizing.Processing module 100 is the Control current measurement module 106 via a RS232 (Recommendedstandard 232) PORT COM 117 also, so that current measurement module 106 transmits current measurement result to processing module 100 by RS232 PORT COM 117, above-mentioned internal integration circuit and RS232 are not in order to restriction the present invention, all can be applicable to this as long as have the element of identical function.
Processing module 100 can be one and advances rank reduced instruction set computer machine, is preferably the machine of ARM (Advanced RISCMachine) series, and carrying out multiplex's processing, and executive operating system is to carry out complicated operations.Above-mentioned display panel 10-13 can be handled and the first panel group and the second panel group of quantity such as is divided into by the multiplex (MUX), for instance display panel 10 and 11 is divided into the first panel group, and display panel 12 and 13 is the second panel group.When the first panel group carried out the burning process, the second panel group carried out test process.And when first panel group execution test process, the second panel group carries out the burning process.So the practice can be saved the stand-by period of causing because of burning process consuming time, make total system can be because not waiting for the burning process to finish in the stand-by period without any the work effect.Test system for display panel 1 therefore h also comprises a reminding module 114, comprises a plurality of hummers, a plurality of light emitting diode or display panel (not illustrating), with the system state 119 of prompting test system for display panel 1.For instance, please refer to Fig. 3, for display panel is divided into a operational flowchart after two groups.At first, in the stage 301, first display panel is assigned to the first panel group carrying out the burning process, and second batch of panel is assigned to the second panel group.Therefore display panel in the second panel group moves because of not carrying out burning as yet at this moment.In stage 302, first display panel begins to carry out the burning process.In stage 303, reminding module 114 prompt system states 119 represent that first display panel burning process finishes.This moment, operating personnel can be switched test system for display panel 1 to the stage 304 by a plurality of switching knobs 116 of test system for display panel 1, made first display panel begin to carry out test process, promptly showed test process and current measurement process.Simultaneously, second batch of display panel begins to carry out the burning process.Finish in the stage 304, be after first display panel test process and second batch of display panel burning process finish, enter the stage 305, it is the 3rd batch of display panel that operating personnel change first display panel of having finished burning and test process with manual mode, and switch test system for display panel 1 to the stage 306 by switching knob 116 again, make second batch of display panel begin to carry out test process, simultaneously, the 3rd batch of display panel begins to carry out the burning process.And finish in the stage 306, after promptly second batch of display panel test process and the 3rd batch of display panel burning process finish, enter the stage 307, it is the 4th batch of display panel that operating personnel change second batch of display panel having finished burning and test process with manual mode, and switch test system for display panel 1 to the stage 308 by switching knob 116 again, make the 3rd batch of display panel begin to carry out test process, simultaneously, the 3rd batch of display panel begins to carry out the burning process.The ensuing stage 309,310,311 ... all operate according to said process.The stage of Fig. 3 center choosing is test system for display panel 1 and begins to carry out multiplex's operation simultaneously, makes system resource can obtain the most effective utilization.In other embodiment, also can design system to the test macro of an automatically replaceable display panel, and the embodiment of manually not changing by the aforesaid operations personnel is limit.
Test system for display panel of the present invention, be with burning, drive signal and the pixel signal detects and three different test macros of testing current are integrated into one, and by the mechanism of display panel grouping that will test, can carry out different test processs simultaneously to each group display panel simultaneously, not only make hardware resource can do efficient utilization, time cost also significantly reduces, and must not change panel constantly and reach and save the effect that manpower expends.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; those skilled in the art can be used for a variety of modifications and variations under the premise without departing from the spirit and scope of the present invention, so protection scope of the present invention is as the criterion with claim of the present invention.

Claims (16)

1. test system for display panel, in order to a plurality of display panels are carried out a test process simultaneously, this test process comprises one and shows a test process and a current measurement process, and this test system for display panel comprises:
One processing module in order to receive an instruction, to carry out a burning process, is burned onto each described display panel with a plurality of video datas, and carries out this demonstration test process by this burning data;
One sensing module in order to receiving the display panel test result that described display panel produces according to this demonstration test process, and transmits this display panel test result to this processing module;
One power module is in order to directly to provide described display panel each burning voltage; And
One current measurement module, connect this power module and described display panel, this power module also provides described display panel one aanalogvoltage and a logic voltage in regular turn by this current measurement module, in order to carry out this current measurement process, make described display panel produce a corresponding electric current respectively to this current measurement module, this current measurement module further produces a current measurement result and is sent to this processing module.
2. test system for display panel as claimed in claim 1 also comprises a plurality of switching knobs, after wherein this burning process is finished, controls this test process by described switching knob.
3. test system for display panel as claimed in claim 1, when described display panel is finished this burning process and this test process, described display panel by one manually or the display panel to be measured that more renews of automated manner.
4. test system for display panel as claimed in claim 1, the one first panel group and the one second panel group of quantity such as described display panel is divided into, when this first panel group carries out this burning process, this second panel group carries out this test process, when this first panel group carries out this test process, this second panel group carries out this burning process.
5. test system for display panel as claimed in claim 1, wherein this current measurement module comprises:
One digital multimeter, in order to the electric current that receives described display panel to produce a current measurement result;
Many to first switch, each is to an analog voltage input and a logic voltage input end of the corresponding display panel of first switch difference; And
One second switch is electrically connected at this digital multimeter;
When a display panel is not carried out this current measurement process, should directly electrically connect this power module and this display panel to first switch, this second switch does not electrically connect with this display panel, when a display panel is carried out this current measurement process, should disconnect in regular turn first switch, this second switch electrically connects this power module and this analog voltage input and this power module and this logic voltage input end by this digital multimeter in regular turn.
6. test system for display panel as claimed in claim 1, wherein this processing module is controlled this power module provides this burning voltage and controls this current measurement module and carry out this current measurement process.
7. test system for display panel as claimed in claim 6 also comprises an internal integration circuit, and this processing module is controlled this power module by this internal integration circuit.
8. test system for display panel as claimed in claim 6, wherein this current measurement module also comprises a RS232 PORT COM, this processing module is controlled this current measurement module by this RS232 PORT COM, and this current measurement module transmits this current measurement result to this processing module by this RS232 PORT COM.
9. test system for display panel as claimed in claim 8, wherein this processing module is a rank reduced instruction set computer machine into.
10. test system for display panel as claimed in claim 9, wherein this advances rank reduced instruction set computer machine and can carry out an operating system.
11. test system for display panel as claimed in claim 1, wherein said video data comprise a pixel cell common voltage and a plurality of pixel data.
12. test system for display panel as claimed in claim 11, wherein said pixel data comprise red pixel data, green pixel data and a blue pixel data.
13. test system for display panel as claimed in claim 1, the wherein display panel of the corresponding different model of this instruction.
14. test system for display panel as claimed in claim 1 also comprises a reminding module, in order to point out a system state of this test system for display panel.
15. as claim 14 described test system for display panel, this reminding module comprises a plurality of hummers, a plurality of light emitting diode or a display panel.
16. test system for display panel as claimed in claim 1, wherein this display panel test result is a display panel pixel GTG value.
CN2008101282851A 2008-07-04 2008-07-04 Test system for display panel Expired - Fee Related CN101299315B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106970296A (en) * 2017-05-31 2017-07-21 友达光电（苏州）有限公司 Display panel, test device and method of testing
CN110988558A (en) * 2019-12-20 2020-04-10 京东方科技集团股份有限公司 Touch screen testing system and method
CN111707926A (en) * 2020-06-22 2020-09-25 武汉精立电子技术有限公司 Detection method and integration method of product to be integrated
CN111707925A (en) * 2020-06-22 2020-09-25 武汉精立电子技术有限公司 Detection method and demura integration method for display panel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6281701B1 (en) * 1999-06-04 2001-08-28 Chi Mei Optoelectronics Corporation Apparatus for testing flat panel display
JP4051562B2 (en) * 2003-07-22 2008-02-27 統寶光電股▲分▼有限公司 Lighting aging test system for flat panel display
JP2006113247A (en) * 2004-10-14 2006-04-27 Shimadzu Corp Panel inspecting device
JP4748392B2 (en) * 2006-03-31 2011-08-17 株式会社島津製作所 TFT array substrate inspection equipment
CN100510675C (en) * 2007-04-24 2009-07-08 友达光电股份有限公司 Method for detecting display panel
CN101101314B (en) * 2007-08-23 2011-07-06 友达光电股份有限公司 Display panel test fixture and test method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106970296A (en) * 2017-05-31 2017-07-21 友达光电（苏州）有限公司 Display panel, test device and method of testing
CN110988558A (en) * 2019-12-20 2020-04-10 京东方科技集团股份有限公司 Touch screen testing system and method
CN111707926A (en) * 2020-06-22 2020-09-25 武汉精立电子技术有限公司 Detection method and integration method of product to be integrated
CN111707925A (en) * 2020-06-22 2020-09-25 武汉精立电子技术有限公司 Detection method and demura integration method for display panel

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