CN102650567A - Detection system and detection method of cluster type LED chip - Google Patents
Detection system and detection method of cluster type LED chip Download PDFInfo
- Publication number
- CN102650567A CN102650567A CN2011101890577A CN201110189057A CN102650567A CN 102650567 A CN102650567 A CN 102650567A CN 2011101890577 A CN2011101890577 A CN 2011101890577A CN 201110189057 A CN201110189057 A CN 201110189057A CN 102650567 A CN102650567 A CN 102650567A
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- led chip
- formula led
- gathering together
- detection system
- optical detector
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- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 238000010586 diagram Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
A detection system of cluster type LED chips is used for detecting the working state of a cluster type LED chip and comprises a bearing unit, a power supply and an optical detector; the bearing unit is used for bearing the cluster type LED chip; the power supply is used for providing a rated working current for the cluster type LED chip so as to enable the cluster type LED chip to emit a working light beam; the optical detector is used for receiving the working light beam and judging the working state according to the working light beam; in addition, the invention also discloses a detection method of the cluster type LED chip.
Description
Technical field
The present invention relates to a kind of detection system of the formula led chip of gathering together, relate in particular to a kind of in order to the gather together detection system of duty of formula led chip of check.
Background technology
Along with light emitting diode (Light Emitting Diode; LED) maturation of technology, LED is used in lighting field widely, and for more diversified lighting system is provided, concentrates the formula of the gathering together led chip of plurality of LEDs on one chip also to receive the attention of many manufacturers.
Yet compared to the led chip that only has single LED unit; The formula of gathering together led chip has blind spot always on detecting; Please with reference to Fig. 1, Fig. 1 is the synoptic diagram of formula led chip of gathering together, and the formula led chip 100 of gathering together can comprise a plurality of LED unit 11; When having minority LED unit 11 unusually in the formula led chip 100 of gathering together; May cause the formula led chip 100 of gathering together when lighting, to have subregion brightness lower, and employed electrical detection mode in the prior art have sizable probability and can not detect such unusual condition; This is because minority LED unit 11 possibly only can cause the very decline of trace of total current unusually, and makes total current drop within the acceptability limit of detection.
In addition; Prior art also can utilize spectrometer to detect the optical characteristics of led chip; Yet such optical detection only can check whether integral color and brightness that the formula led chip 100 of gathering together emits beam is correct, still can't detect dark space among a small circle on the formula led chip 100 of gathering together.
Summary of the invention
Technical matters and purpose that institute of the present invention desire solves:
Edge this; It is a kind of in order to the gather together detection system and the detection method of duty of formula led chip of check that fundamental purpose of the present invention is to provide; This detection system and detection method can detect the duty of formula led chip when lighting of gathering together, defectiveness whether when gathering together the actual use of formula led chip with differentiation.
The technological means that the present invention deals with problems:
A kind of formula light emitting diode of gathering together (Light Emitting Diode; LED) detection system of chip, in order to detect one gather together the formula led chip duty, this detection system comprises load bearing unit, power supply unit and optical detector; Load bearing unit is in order to carry this formula led chip of gathering together; Power supply unit makes this formula led chip of gathering together send a working beam in order to this formula led chip one rated operational current of gathering together to be provided, to use; Optical detector is in order to receiving this working beam, and judges this duty according to this.
In a preferred embodiment of the present invention, this optical detector is an automatic optical detector (Automated Optical Inspection; AOI).
In a preferred embodiment of the present invention, this optical detector comprises image acquisition unit and judging unit, and image acquisition unit and sends this work image in order to receive this working beam to obtain a work image; Judging unit receives this work image in order to this image acquisition unit certainly, and judges this duty according to this; And the preferably among this embodiment, this judging unit can be an industrial computer.
In a preferred embodiment of the present invention, this judging unit is divided into this work image area between a plurality of comparison area, and the brightness between those comparison area is differentiated.
In a preferred embodiment of the present invention, the detection system of the formula of gathering together led chip can also comprise an attenuator, and this attenuator is arranged at before this optical detector, uses this working beam of decay.
In a preferred embodiment of the present invention, the detection system of the formula of gathering together led chip can also comprise a current adjustment unit, and this current adjustment unit is electrically connected at this power supply unit and this is gathered together between the formula led chip, uses this rated operational current of adjustment.
The present invention also discloses a kind of detection method of the formula led chip of gathering together, and comprises following steps: a rated operational current to the formula led chip of gathering together (a) is provided, uses making this formula led chip of gathering together send a working beam; (b) receive this working beam with an optical detector, to obtain a work image; (c) utilize this optical detector that this work image is differentiated, to obtain a duty.
The present invention's effect against existing technologies:
Utilize electrically or spectrometer detects the detection mode of the formula led chip of gathering together compared to existing; The detection system of the formula led chip of gathering together of the present invention and detection method can be when the formula led chip of gathering together be lighted; Whether have abnormal dark space produce, therefore can effectively promote the fiduciary level that detects the formula led chip of gathering together if determining the formula led chip of gathering together.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the synoptic diagram of formula led chip of gathering together;
Fig. 2 is the first preferred embodiment synoptic diagram of detection system of the present invention;
Fig. 3 is the second preferred embodiment synoptic diagram of detection system of the present invention;
Fig. 4 is the subregion comparison synoptic diagram of work image; And
Fig. 5 is a detection method process flow diagram of the present invention.
Wherein, Reference numeral
The formula of gathering together led chip 100
Work image P1
Z1, Z2 between comparison area
Detection method process flow diagram S101～S107
Embodiment
The present invention is about a kind of detection system of the formula led chip of gathering together, and refers to a kind of in order to the gather together detection system of duty of formula led chip of check especially.Below enumerate a preferred embodiment now with explanation the present invention, right those skilled in the art know that all this is merely one for example, and are not in order to limit invention itself.The detailed description of relevant this preferred embodiment is following.
See also Fig. 2 and Fig. 3, Fig. 2 is the first preferred embodiment synoptic diagram of detection system of the present invention, and Fig. 3 is the second preferred embodiment synoptic diagram of detection system of the present invention.The detection system of the formula led chip 100 of gathering together of the present invention, in order to detect one gather together formula led chip 100 duty, this detection system comprises load bearing unit 21, power supply unit 22 and optical detector 23.
Therefore if use the AOI board as the optical detector among the present invention 23, the preferably in present embodiment so, detection system can also comprise an attenuator 24, and this attenuator 24 is to be arranged at before this optical detector 23, uses this working beam of decay; Or detection system can comprise a current adjustment unit 25, and this current adjustment unit 25 is to be electrically connected at this power supply unit 22 and this is gathered together between the formula led chip 100, uses this rated operational current of adjustment; Above-mentioned dual mode can reduce the brightness of the received light of optical detector 23, so that optical detector 23 can accurately be judged the duty of the formula led chip 100 of gathering together.
In order to make the efficient of detection higher; Attenuator 24 can be to be made up of at least one decay filter; And the light that is directed against one or more wavelength filters; And optimal situation is to let light luminance difference that optical detector 23 received when gathering together formula led chip 100 operate as normal less than 1%; And the 23 reception required time shutter of working beam of optical detector can be controlled within the 5ms, and when the formula led chip 100 of gathering together had the dark space to produce, the brightness of dark space only had 10%～80% of normal brightness; If use current adjustment unit 25 to reduce the brightness of working beam; Rated operational current turned down be original 50%; The brightness of working beam will be reduced to 60% so, thus the amplitude turned down of rated operational current must to let the 23 required time shutter of optical detector can be controlled within the 5ms comparatively desirable.
See also Fig. 4, Fig. 4 is the subregion comparison synoptic diagram of work image.Preferably in present embodiment; Optical detector 23 can be to comprise image acquisition unit 231 and judging unit 232; Image acquisition unit 231 is in order to receive this working beam to obtain a work image P1; And sending this work image P1, judging unit 232 is to receive this work image P1 in order to this image acquisition unit 231 certainly, and judges this duty according to this; And the preferably in present embodiment, judging unit can be an industrial computer; In addition, this judging unit 232 can be divided into Z1 and Z2 between a plurality of comparison area with this work image P1, and the brightness of Z1 and Z2 between those comparison area is differentiated, and can learn whether the formula led chip 100 of gathering together has the dark space to produce; Be stressed that Z1 and Z2 can do design according to the distributing position of LED unit 11 on the formula led chip 100 of gathering together between comparison area, but can certainly be to do design with arbitrary shape and size.
Please consult Fig. 5 simultaneously, Fig. 5 is detection method process flow diagram of the present invention.Detection method of gathering together the formula led chip of the present invention comprises following steps:
S101: light the formula led chip 100 of gathering together, make the formula led chip 100 emission working beams of gathering together;
S103: when optical detector 23 is the AOI board, can see through attenuator 24 decay working beams, or seeing through current adjustment unit 25 reduces rated operational currents, use and reduce the received light intensity of optical detector 23;
S105: optical detector 23 receives the working beam that the formula led chip 100 of gathering together is sent; And
S107: optical detector 23 receive working beam after obtain work image P1, and work image P1 is differentiated.
Utilize electrically or spectrometer detects the detection mode of the formula led chip 100 of gathering together compared to existing; The detection system of the formula led chip 100 of gathering together of the present invention and detection method can be when the formula led chip 100 of gathering together be lighted; Whether determine the formula led chip 100 of gathering together has abnormal dark space to produce; And if use the AOI board in detection system of the present invention and detection method; Also can overcome the shortcoming that existing AOI board only can detect passive luminous determinand, comprehensive above advantage, the fiduciary level of formula led chip 100 but the knowledge capital invention can very effective lifting detection be gathered together.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. detection system of formula led chip of gathering together, in order to detect one gather together the formula led chip a duty, it is characterized in that this detection system comprises:
One load bearing unit is in order to carry this formula led chip of gathering together;
One power supply unit makes this formula led chip of gathering together send a working beam in order to this formula led chip one rated operational current of gathering together to be provided, to use; And
One optical detector in order to receiving this working beam, and is judged this duty according to this.
2. the detection system of the formula led chip of gathering together according to claim 1 is characterized in that, this optical detector is an automatic optical detector.
3. the detection system of the formula led chip of gathering together according to claim 1 is characterized in that, this optical detector comprises:
One image acquisition unit in order to receive this working beam to obtain a work image, and sends this work image; And
One judging unit receives this work image in order to this image acquisition unit certainly, and judges this duty according to this.
4. the detection system of the formula led chip of gathering together according to claim 3 is characterized in that, this judging unit is an industrial computer.
5. the detection system of the formula led chip of gathering together according to claim 3 is characterized in that, this judging unit is divided into this work image area between a plurality of comparison area, and the brightness between those comparison area is differentiated.
6. the detection system of the formula led chip of gathering together according to claim 1 is characterized in that, also comprises an attenuator, and this attenuator is arranged at before this optical detector, uses this working beam of decay.
7. the detection system of the formula led chip of gathering together according to claim 1 is characterized in that, also comprises a current adjustment unit, and this current adjustment unit is electrically connected at this power supply unit and this is gathered together between the formula led chip, uses this rated operational current of adjustment.
8. the detection method of formula led chip of gathering together is characterized in that, comprises:
(a) rated operational current to the formula led chip of gathering together is provided, uses making this formula led chip of gathering together send a working beam;
(b) receive this working beam with an optical detector, to obtain a work image; And
(c) utilize this optical detector that this work image is differentiated, to obtain a duty.
9. the detection method of the formula led chip of gathering together according to claim 8 is characterized in that, in step (b) before, also comprising provides an attenuator before this optical detector, uses this working beam of decay.
10. the detection method of the formula led chip of gathering together according to claim 8; It is characterized in that in step (a), also comprising provides a current adjustment unit; Make this current adjustment unit be electrically connected at this power supply unit and this is gathered together between the formula led chip, use this rated operational current of adjustment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100105958 | 2011-02-23 | ||
| TW100105958A TWI417976B (en) | 2011-02-23 | 2011-02-23 | The detection system and detection method of cluster LED chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102650567A true CN102650567A (en) | 2012-08-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101890577A Pending CN102650567A (en) | 2011-02-23 | 2011-06-30 | Detection system and detection method of cluster type LED chip |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102650567A (en) |
| TW (1) | TWI417976B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237808A (en) * | 2014-07-28 | 2014-12-24 | 四川大学 | Electronic police system light supplementary lamp fault detecting method based on image abnormities |
| CN110514927A (en) * | 2019-08-16 | 2019-11-29 | 惠州Tcl移动通信有限公司 | The unit exception detection method of mobile terminal, computer-readable medium |
| CN114823408A (en) * | 2022-05-05 | 2022-07-29 | 无锡美科微电子技术有限公司 | Wafer detection system and wafer detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101093246A (en) * | 2006-06-22 | 2007-12-26 | 上海理工大学 | Intellectualized online system for testing illuminating quality of headlight of an automobile built from LED |
| CN201149540Y (en) * | 2007-10-25 | 2008-11-12 | 珠海华冠光电技术有限公司 | LED optical detector |
| CN201247098Y (en) * | 2008-09-03 | 2009-05-27 | 长春希达电子技术有限公司 | Test system for LED display screen pixel array light intensity distribution |
| CN101738251A (en) * | 2008-11-12 | 2010-06-16 | 纬创资通股份有限公司 | Automatic test system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5304211B2 (en) * | 2008-12-11 | 2013-10-02 | ソニー株式会社 | Display device, brightness adjusting device, backlight device, brightness adjusting method and program |
| TWM362493U (en) * | 2009-03-05 | 2009-08-01 | Hiromi System Co Ltd | Testing device for display |
-
2011
- 2011-02-23 TW TW100105958A patent/TWI417976B/en not_active IP Right Cessation
- 2011-06-30 CN CN2011101890577A patent/CN102650567A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093246A (en) * | 2006-06-22 | 2007-12-26 | 上海理工大学 | Intellectualized online system for testing illuminating quality of headlight of an automobile built from LED |
| CN201149540Y (en) * | 2007-10-25 | 2008-11-12 | 珠海华冠光电技术有限公司 | LED optical detector |
| CN201247098Y (en) * | 2008-09-03 | 2009-05-27 | 长春希达电子技术有限公司 | Test system for LED display screen pixel array light intensity distribution |
| CN101738251A (en) * | 2008-11-12 | 2010-06-16 | 纬创资通股份有限公司 | Automatic test system and method |
Non-Patent Citations (1)
| Title |
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| ELODIE MAHLER ET AL: "Testing LED Lighting for Colour Discrimination and Colour Rendering", 《COLOR RESEARCH AND APPLICATION》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237808A (en) * | 2014-07-28 | 2014-12-24 | 四川大学 | Electronic police system light supplementary lamp fault detecting method based on image abnormities |
| CN104237808B (en) * | 2014-07-28 | 2017-01-18 | 四川大学 | Electronic police system light supplementary lamp fault detecting method based on image abnormities |
| CN110514927A (en) * | 2019-08-16 | 2019-11-29 | 惠州Tcl移动通信有限公司 | The unit exception detection method of mobile terminal, computer-readable medium |
| CN114823408A (en) * | 2022-05-05 | 2022-07-29 | 无锡美科微电子技术有限公司 | Wafer detection system and wafer detection method |
| CN114823408B (en) * | 2022-05-05 | 2023-10-24 | 无锡美科微电子技术有限公司 | Wafer detection system and wafer detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI417976B (en) | 2013-12-01 |
| TW201236096A (en) | 2012-09-01 |
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Application publication date: 20120829 |