CN202869778U - Large-area backlight brightness parameter testing device - Google Patents
Large-area backlight brightness parameter testing device Download PDFInfo
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- CN202869778U CN202869778U CN 201220303181 CN201220303181U CN202869778U CN 202869778 U CN202869778 U CN 202869778U CN 201220303181 CN201220303181 CN 201220303181 CN 201220303181 U CN201220303181 U CN 201220303181U CN 202869778 U CN202869778 U CN 202869778U
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Abstract
The utility model discloses a large-area backlight brightness parameter testing device, comprising a backlight brightness detection case, a signal acquisition and processing test case, a computer, and a bar code printer. A tested backlight and a detection part in the interior of the backlight brightness detection case are very convenient to replace. The biggest trait of the large-area backlight brightness parameter testing device is that the detection part and a signal acquisition and processing part are not mounted in a same cabinet; all the parts have no mutual interference; and the heat radiation is good. In the next place, the backlight brightness detection case can be customized according to test technology standards set by different enterprises and backlights of different dimensions, and be used directly with the signal acquisition and processing test case, the computer, and the bar code printer; the adaptability is strong; and the large-area backlight brightness parameter testing device is an important detection device for examining whether backlight products are qualified or not and for qualification grade classifications.
Description
Technical field
The utility model relates to backlight detection technique field, specifically refers to a kind of light-emitting surface brightness data test device of large tracts of land backlight.
Background technology
Liquid crystal display (LCD) has become the requisite vitals such as televisor, computer, mobile phone at present.In the liquid crystal display, liquid crystal is originally as non-luminescent device, and it need to could realize Presentation Function by backlight.
The visible light brightness of backlight light-emitting area and brightness uniformity parameter are to estimate the backlight product quality and differentiate the whether qualified basic optical parameter of backlight product, need that extremely facility is arranged, detecting instrument efficiently, even the detecting instrument that can realize that backlight product is online need to be arranged.
The at present existing backlight product optical parametric test of each backlight producing country of the world and China is to use imaging brightness meter, and for example BM-7 or BM-7A nitometer carry out the method that a few sample is taken a sample test.The detection method of this application imaging brightness meter, need to use the multidimensional measure support, make tested backlight source module or nitometer be two dimension (x along the X-axis Y-axis, y) relative translation, adjust again between nitometer and the backlight apart from Z, with manually choosing some test points on the backlight light-emitting area, the brightness of point-to-point measurement light-emitting area visible light, and acquisition test data.
Use the backlight proving installation of motor driving objective table or driving BM-7 type nitometer, it is a kind of large-scale pointwise test device, difference just adopts step motor control to replace the people two dimension (x that works, y) relative translation location, for the test of different size backlight product, still need the relative distance (z) with manual adjustments nitometer and sample.
Use the main equipment of above pointwise test, all can only extract a small amount of product test, testing cost is high, can not realize that backlight sample multiple spot tests simultaneously.Detect simultaneously if implement multiple spot, just need to adopt simultaneously many same imaging brightness meters.
The another kind of DA-3000 luminance test analyser of using the CCD image capture method can not be conveniently used in the large tracts of land backlight source module and detect, its unstable properties, and testing apparatus is huge, involve great expense.Applicant has proposed Chinese patent application for this reason, application number: 201220130328.1, and title: " backlight optical parametric on-line measuring device ".Because this proving installation is with polynary brightness detector plate, AD digital acquisition circuit system, current regulator power supply, tested backlight is integrated in the same cabinet, and radiating effect is bad, affects the apparatus measures accuracy, especially to the large area backlight product test, heat dissipation problem is particularly important.Secondly, along with the increase of tested backlight size, the floorage of testing apparatus also increases, and for example, for the proving installation of 42 inches backlight source module, its floorage is greater than 930mmx 534mm; For more than 62 inches, greater than 0.8 meter of 1.3 meters x, cause unnecessary waste.
Summary of the invention
The defective that exists for overcoming above-mentioned prior art the utility model proposes a kind of exploring block and signal acquisition process parts and is not contained in large tracts of land back light source brightness parameter test device in the same cabinet.
Large tracts of land back light source brightness parameter test device of the present utility model comprises: back light source brightness is surveyed case, signal acquisition process test box, computing machine and bar-code printer.
Described back light source brightness is surveyed case, comprise: substrate, at substrate two parallel guide rails for delivery of the sample platform are housed, tested backlight is placed on the sample stage, be transported to by guide rail under the test surface of exploring block, the light that tested backlight light-emitting area is sent is received by the test surface of exploring block.
Described exploring block is comprised of many luminance test rods that are parallel to each other, and on the every luminance test rod alignment brightness detector is installed, and forms thus a test surface.Every luminance test rod is fixed on the substrate by the feet of two ends, the test surface that every luminance test rod after fixing will guarantee its composition at grade, the light-emitting area of tested backlight and the gap≤5mm between the test surface.The number of test points of the measuring technology code requirement that backlight product manufacturing enterprise formulates and the distribution of test point are depended in interval on interval between the adjacent brightness prod and the alignment brightness detector between the brightness detector.
AD digital acquisition circuit module and current regulator power supply are installed in the described test box.Current regulator power supply with digital voltmeter and digital electronic ammeter be installed on the cabinet panel, also have a starting switch that starts test procedure on the cabinet panel, current regulator power supply is AD digital acquisition circuit system module and the power supply of backlight sample.AD digital acquisition circuit system is connected with computing machine by data transmission bus.
Advantage of the present utility model:
1. be a transient state, the testing process of while to the test of several luminance parameter test points of large tracts of land backlight source module light-emitting area, measuring accuracy is high, and testing cost is cheap.
2. data such as the real-time display backlight light-emitting surface brightness of computer interface distributed data, high-high brightness, minimum brightness, mean flow rate, brightness relative error, and directly print the bar code of all over products information, and such as: the data such as qualified grade of the date of manufacture of backlight product, factory number, electrical parameter, total lumen output, mean flow rate, brightness irregularities relative deviation and product.
3. each parts of this proving installation do not interfere with each other mutually, good heat dissipation, and the measuring technology standard of formulating for different enterprises and back light source brightness of the backlight of different size customization are surveyed case, mix other parts and can use strong adaptability.
4. the optical texture of this proving installation is simple, and manufacturing process is easy, and is cheap for manufacturing cost, is the important checkout equipment of the qualified and qualified grade separation of check backlight product.
Description of drawings
Each critical piece of this proving installation of Fig. 1 connects synoptic diagram;
Fig. 2 is by the test surface of excellent 16 sensing points that form of four luminance tests;
Fig. 3 back light source brightness is surveyed the cross-sectional view of case;
The software flow pattern of this proving installation of Fig. 4.
Embodiment
Below in conjunction with accompanying drawing, implementation of the present utility model is further described:
See Fig. 1, large tracts of land back light source brightness parameter test device of the present utility model comprises: back light source brightness is surveyed case 1, signal acquisition process test box 2, computing machine 3 and bar-code printer 4.
Described back light source brightness is surveyed case, comprise: substrate 101, at substrate two parallel guide rails 102 for delivery of sample platform 103 are housed, tested backlight 5 is placed on the sample stage 103, be transported to by guide rail under the test surface of exploring block, the light that tested backlight light-emitting area is sent is received by the test surface of exploring block.
Described exploring block 6 is comprised of many luminance test rods 601 that are parallel to each other, and on the every luminance test rod alignment brightness detector 602 is installed, and forms thus a test surface.Every luminance test rod is fixed on the substrate 101 by a normal pin 104 of two ends, the test surface that every luminance test rod after fixing will guarantee its composition at grade, the light-emitting area of tested backlight and the gap≤5mm between the test surface.The number of test points of the measuring technology code requirement that backlight product manufacturing enterprise formulates and the distribution of test point are depended in interval on interval between the adjacent brightness prod and the alignment brightness detector between the brightness detector.
Described brightness detector 602 is comprised of monocrystaline silicon solar cell and surface coverage QB21 glass filter, the purpose that covers the QB21 glass filter is spectral response and the human eye luminosity function coupling that makes brightness detector 602, the precision resistance of each monocrystaline silicon solar cell low resistance in parallel, 25 Ω precision resistances for example, make brightness detector 602 satisfy the short-circuit current output condition, make the brightness of the output electrical signals of brightness detector and incident light linear.
AD digital acquisition circuit module 201 and current regulator power supply 203 are installed in the described test box 2.Current regulator power supply is installed on the cabinet panel with the voltage table of numeral and digital electronic ammeter and (draws among the figure), also have a starting switch (not drawing among the figure) that starts test procedure on the cabinet panel, current regulator power supply is AD digital acquisition circuit system module and 5 power supplies of tested backlight.AD digital acquisition circuit module 201 is connected with computing machine 3 by data transmission bus 202, and computing machine 3 is connected with bar-code printer 4.
AD digital acquisition circuit module 201 gathers in the luminance test rods each brightness detector data and implements the AD conversion.AD digital acquisition circuit module is the product for the commercial Application design, the multichannel of sampling simultaneously differential signal, the analog quantity sampling precision can reach ± and 0.05%, full width repeated sampling speed to tested backlight light-emitting area can reach 2 times/second, adopt the photoelectricity isolation between this inside modules input block and the control module and input signal is taked filtering measures, greatly reduced industry spot and disturbed the normal impact that moves of module, guaranteed that module has the accuracy of good reliability and measurement result.AD digital acquisition circuit module is with all sampled digital signals, RS-485 communication interface data transmission bus 202 by the band isolation transfers to computing machine 3, as calculated software processing, demonstration, the store test data of machine 3, and full detail, the test data input bar-code printer 4 of tested backlight product printed.Computing machine 3 interfaces are distributed in the data such as total lumen of different coordinate position brightness relative error data on the mean flow rate, backlight light-emitting area of high-high brightness in the brightness data, backlight luminescent panel of different coordinate positions and position, minimum brightness and position thereof, whole backlight luminescent panel and the output of whole backlight luminescent panel in real time on the display backlight luminescent panel.
See Fig. 2,4 brightness detectors 602 have been installed in the every luminance test rod 601, form the test surfaces to 16 points of tested backlight sample.Each brightness detector of this proving installation needs to carry out technical grade test calibration.
This proving installation can increase in case of necessity fiber spectrometer and realize the spectrum of backlight light-emitting area and the detection of chromatic value, and the light input optical fibre head of fiber spectrometer can be installed in the reception optical plane that is comprised of the luminance test rod.
Claims (4)
1. large tracts of land back light source brightness parameter test device is characterized in that: this device is surveyed case (1), signal acquisition process test box (2), computing machine (3) and bar-code printer (4) by back light source brightness and is formed;
Described back light source brightness is surveyed case (1), comprise: substrate (101), at substrate two parallel guide rails for delivery of sample platform (103) (102) are housed, tested backlight (5) is placed on the sample stage (103), be transported to by guide rail under the test surface of exploring block (6), the light that tested backlight light-emitting area is sent is received by the test surface of exploring block;
AD digital acquisition circuit module (201) and current regulator power supply (203) are installed in the described test box (2), and current regulator power supply is AD digital acquisition circuit module and tested backlight (5) power supply; AD digital acquisition circuit module (201) is connected with computing machine (3) by data transmission bus (202), and computing machine (3) is connected with bar-code printer (4).
2. according to claim 1 a kind of large tracts of land back light source brightness parameter test device, it is characterized in that: described exploring block (6) is comprised of the many luminance test rods (601) that are parallel to each other, alignment brightness detector (602) is installed on the every luminance test rod, forms thus a test surface; Every luminance test rod is fixed on the substrate (101) by a normal pin (104) of two ends, the test surface that every luminance test rod after fixing will guarantee its composition at grade, the light-emitting area of tested backlight and the gap≤5mm between the test surface.
3. according to claim 2 a kind of large tracts of land back light source brightness parameter test device, it is characterized in that: the number of test points of the measuring technology code requirement that backlight product manufacturing enterprise formulates and the distribution of test point are depended in the interval on the interval between the described many luminance test rods (601) that are parallel to each other and the alignment brightness detector between the brightness detector.
4. according to claim 2 a kind of large tracts of land back light source brightness parameter test device, it is characterized in that: described brightness detector (602) is comprised of monocrystaline silicon solar cell and surface coverage QB21 glass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303181 CN202869778U (en) | 2012-06-26 | 2012-06-26 | Large-area backlight brightness parameter testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303181 CN202869778U (en) | 2012-06-26 | 2012-06-26 | Large-area backlight brightness parameter testing device |
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| CN202869778U true CN202869778U (en) | 2013-04-10 |
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| CN 201220303181 Expired - Fee Related CN202869778U (en) | 2012-06-26 | 2012-06-26 | Large-area backlight brightness parameter testing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630332A (en) * | 2013-11-15 | 2014-03-12 | 南京中电熊猫照明有限公司 | Backlight brightness uniformity measuring device and method |
| CN105588710A (en) * | 2016-03-07 | 2016-05-18 | 京东方科技集团股份有限公司 | Backlight source monitoring device and lamp lighting device |
| CN111795803A (en) * | 2020-06-23 | 2020-10-20 | 深圳市摩西尔工业检测设备有限公司 | Two-dimensional luminescence detection method for surface luminophor |
| CN112129489A (en) * | 2020-09-28 | 2020-12-25 | 厦门天马微电子有限公司 | Display panel residual image detection method and device and display equipment |
-
2012
- 2012-06-26 CN CN 201220303181 patent/CN202869778U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630332A (en) * | 2013-11-15 | 2014-03-12 | 南京中电熊猫照明有限公司 | Backlight brightness uniformity measuring device and method |
| CN103630332B (en) * | 2013-11-15 | 2017-01-11 | 南京中电熊猫照明有限公司 | Backlight brightness uniformity measuring device and method |
| CN105588710A (en) * | 2016-03-07 | 2016-05-18 | 京东方科技集团股份有限公司 | Backlight source monitoring device and lamp lighting device |
| CN105588710B (en) * | 2016-03-07 | 2019-01-18 | 京东方科技集团股份有限公司 | Backlight monitoring device and lighting machine |
| US10578484B2 (en) | 2016-03-07 | 2020-03-03 | Boe Technology Group Co., Ltd. | Backlight source testing device and light-on testing apparatus |
| CN111795803A (en) * | 2020-06-23 | 2020-10-20 | 深圳市摩西尔工业检测设备有限公司 | Two-dimensional luminescence detection method for surface luminophor |
| CN111795803B (en) * | 2020-06-23 | 2022-11-01 | 深圳市摩西尔工业检测设备有限公司 | Two-dimensional luminescence detection method for surface illuminant |
| CN112129489A (en) * | 2020-09-28 | 2020-12-25 | 厦门天马微电子有限公司 | Display panel residual image detection method and device and display equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20210626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |