CN203930268U - A kind of liquid crystal display digital locating device - Google Patents
A kind of liquid crystal display digital locating device Download PDFInfo
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- CN203930268U CN203930268U CN201420352527.6U CN201420352527U CN203930268U CN 203930268 U CN203930268 U CN 203930268U CN 201420352527 U CN201420352527 U CN 201420352527U CN 203930268 U CN203930268 U CN 203930268U
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Abstract
The utility model relates to a kind of liquid crystal display digital locating device, this device comprises crystal liquid substrate, be placed on the functional glass on crystal liquid substrate, photodetector, the micro-displacement apparatus of the controller that the information of photodetector collection is processed and adjustment functional glass position, described photodetector comprises electro-optical system and laser instrument, the light that described laser instrument sends reflects into into photodetector by testee, described electro-optical system comprises CCD target surface and the lens combination of concentric, CCD and lens combination place plane parallel, distance between described CCD target surface and lens combination is fixed value.Described micro-displacement apparatus rotates and reverse according to the motor of the positive and negative signal deciding micro-displacement apparatus of input.The utility model improves efficiency and the positioning precision of liquid crystal display location, has overcome the poor and human factor of consistance, reduces costs.
Description
Technical field
The utility model relates to liquid crystal display technical field, relates in particular to liquid crystal display positioning field, relates in particular a kind of liquid crystal display high accuracy number locating device.
Background technology
Along with developing rapidly of infotech and plane display technique, LCD product is also tending towards variation, and multi-functional LCDs is come out successively, and various functional glass are used widely in LCD product.For example, be widely used at present the touch display screen on mobile phone, its essence a slice of having fitted on the surface of original liquid crystal display exactly has the sheet glass of touch function.And for example under the external environment condition of high high light, use anti-reflection glass can effectively improve the contrast of liquid crystal display.And these functional glass are used LOCA (liquid optical cement) and liquid crystal display to bind in the ordinary course of things, realized so on the one hand the multifunctionality of LCD product, also can play reinforcement effect to liquid crystal display on the other hand, effectively improve the resistance to shock of liquid crystal display.
In the process of glue binding, in each component joint process, inevitably need to be applied to location technology so.Location technology good directly has influence on quality, efficiency, cost of production etc.And the mode that current most of location technology adopts human eye directly to observe mostly, or the mode that adopts CCD amplification+human eye to locate, or adopt mechanical clamp locator meams.
Human eye is directly observed the difference that is limited by personnel self, and long-time observation can cause personnel's fatigue, the accuracy of reduction location.Different personnel's operations have different results in addition, and consistance is not good.The direct view mode of the mode of CCD amplification+human eye and human eye is adopted in a like fashion and is positioned, and just when practical operation, has alleviated the fatigability that personnel observe.And adopt the cost of mechanical clamp location higher, and multiple product needs multiple clamping apparatus location, adjustability fixture also to need fixture itself to adjust just can carry out subsequent operation, and actual operation is not strong, and efficiency is lower.Under this technical background, need a kind of easy to operately, positioning precision is high, and consistance is strong, and human factor is disturbed few, the location technology that cost is low.
Summary of the invention
For correlative technology field document and above the deficiencies in the prior art, in a large amount of existing literature research and long-term on the basis of association area Development Practice, the utility model proposes " a kind of liquid crystal display high accuracy number locating device ", overcome in prior art technical barriers such as " previously in liquid crystal display location technology, homogeneity of product were poor, precision is low, human factor disturb large problem ", realized the beneficial effect of " improve positioning precision and overcome the poor and human factor of consistance ".
For achieving the above object, the utility model is achieved through the following technical solutions: a kind of liquid crystal display digital locating device, this device comprises crystal liquid substrate, is placed on the micro-displacement apparatus of functional glass, photodetector, the controller that the information of photodetector collection is processed and adjustment functional glass position on crystal liquid substrate.Described photodetector comprises electro-optical system and laser instrument, and the light that described laser instrument sends reflects into into photodetector by testee.Described electro-optical system comprises CCD target surface and the lens combination of concentric, CCD and lens combination place plane parallel, and the distance between described CCD target surface and lens combination is fixed value.Described micro-displacement apparatus rotates and reverse according to the motor of the positive and negative signal deciding micro-displacement apparatus of input.
The beneficial effect that the utility model possesses is: the utility model can have been broken traditional liquid crystal display location technology fixed mode, adopts Photodetection system and computer processing mode to form high precision liquid crystal display numeral location technology.Poor for previous homogeneity of product, precision is low, human factor is disturbed large problem, efficiency and the yields of liquid crystal display location is increased dramatically after applying this invention, has improved positioning precision; And a kind of digital locating system is provided, has overcome the poor and human factor of consistance, reduced costs, improved net profit.
Accompanying drawing explanation
Fig. 1 is the diagrammatic cross-section of the high precision liquid crystal display numeral location technology of the utility model embodiment.
Fig. 2 is the photoelectric measurement schematic diagram of the high precision liquid crystal display numeral location technology of the utility model embodiment.
Fig. 3 is the planimetric map of the CCD target surface of the utility model embodiment.
Fig. 4 is the K value correction figure of the utility model embodiment.
Wherein 1 is crystal liquid substrate, and 2 is functional glass, and 3 is photodetector, and 4 is computing machine, and 5 is micro-displacement apparatus.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, to embodiment of the present utility model as related control system, mutual annexation, and implementation method, be described in further detail, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present utility model, technical scheme.
A liquid crystal display digital locating device, this device comprises crystal liquid substrate, is placed on the micro-displacement apparatus of functional glass, photodetector, the controller that the information of photodetector collection is processed and adjustment functional glass position on crystal liquid substrate.Described photodetector comprises electro-optical system and laser instrument, and the light that described laser instrument sends reflects into into photodetector by testee.Described electro-optical system comprises CCD target surface and the lens combination of concentric, CCD and lens combination place plane parallel, and the distance between described CCD target surface and lens combination is fixed value.Described micro-displacement apparatus rotates and reverse according to the motor of the positive and negative signal deciding micro-displacement apparatus of input.
This high precision liquid crystal display numeral location technology is mainly by the photodetector by electro-optical system and laser constitution, gather after the position signalling input computing machine of laser reflection light, through image processing and mathematical computations, obtain photodetector to the air line distance of liquid crystal display or functional glass sidewall, after contrasting with target range again, micro-displacement apparatus is inputted to positive negative signal, and micro-displacement apparatus according to input positive and negative signal deciding motor forward or reverse, the position of functional glass is adjusted again in the rotating of motor by mechanical arm.After continuous collection, measurement, calculating and adjustment, functional glass is positioned to target location the most at last.Electro-optical system mainly comprises lens combination and CCD, and the function of lens combination is the effect of optically focused on the one hand, corrects on the other hand the aberration of light; CCD major function is light signal to be converted into electric signal, and passes to computing machine.Photodetector (comprising electro-optical system and laser instrument) is done as a whole vertical movement of carrying out, that is to say that photodetector first measures the distance between liquid crystal display, the photodetector distance of pan-up measurement function glass more afterwards, difference is between the two locator value.Each laser beam of all laser instrument in photodetector being sent of measuring is aimed at testee sidewall.
As shown in Figure 2, in Fig. 2, D represents the distance between laser instrument and testee; H represents the distance between laser beam and electro-optical system optical axis; D represents the distance of reflection ray distance optical axis on CCD target surface; L represents the distance between lens combination principal plane and CCD target surface; θ represents the angle between reflection ray and electro-optical system optical axis.Tan θ=d/L, L fixes, but d is unfixing.Laser beam irradiation says accurately it is scattering to object, that is to say that laser beam positions after the reflected light after object scattering enters photodetector.
According to the geometric relationship of each position in Fig. 2:
h＝D×tanθ
tanθ＝d/L
d＝A×B
Arrange: D=h * L/A * B
H and L are the fixed constants that can directly measure;
A represents that reflection ray acceptance point is to the pixel count (image is processed known) of optical axis center;
B represents the dimension width (known by searching handbook) of single pixel.
Consider the aberration of actual alignment error and lens combination, also need D to carry out numerical compensation K.
Thereby D=h * L/A * B+K
Fig. 3 is the planimetric map of CCD target surface.In Fig. 3, (N, M) represents the pixel resolution of this kind of CCD; B represents the width dimensions of single pixel; A represents the number of pixels at reflection ray acceptance point distance C CD target surface center.The image that A numerical value need to collect CCD carries out can obtaining after Computer Image Processing, and the numerical value of A obtains by Digital Image Processing, and after the image information that CCD obtains, each pixel exists image information, has monochrome information, has chrominance information; The monochrome information that this device utilizes each pixel to obtain compares, contrast the brightest in whole image (because laser beam possesses high-octane feature, can think the brightest is exactly the point of irradiation of laser beam), and computing machine is also recorded the position coordinates of bright spot on CCD, thereby obtains A value.
Fig. 4 is K value correction figure.As can be seen from the figure between D is compared with hour actual measured value and standard value, K value is larger, and when D is larger, K value diminishes.So K value has been formed and take certain fitting function that D is independent variable, and the overall trend of K value correction figure is theoretical calculate, concrete size obtains by test.
Single assembly can only regulate a distance in direction principle, and liquid crystal display location generally need to regulate 2 directions, and the adjusting of 2 directions does not need to install additional other extra devices, only need in 2 directions, all install this device additional.
The utility model is not limited to above-mentioned specific embodiment; do not departing under the utility model spirit and real situation thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model; these are tackled mutually the modification that the utility model carries out or are equal to replacement, and it all should be encompassed in the middle of the scope of claim protection of the present utility model.
Claims (4)
1. a liquid crystal display digital locating device, is characterized in that: this device comprises crystal liquid substrate, is placed on the micro-displacement apparatus of functional glass, photodetector, the controller that the information of photodetector collection is processed and adjustment functional glass position on crystal liquid substrate.
2. digital locating device according to claim 1, is characterized in that: described photodetector comprises electro-optical system and laser instrument, and the light that described laser instrument sends reflects into into photodetector by testee.
3. digital locating device according to claim 2, is characterized in that: described electro-optical system comprises CCD target surface and the lens combination of concentric, CCD and lens combination place plane parallel, and the distance between described CCD target surface and lens combination is fixed value.
4. digital locating device according to claim 1, is characterized in that: described micro-displacement apparatus rotates and reverse according to the motor of the positive and negative signal deciding micro-displacement apparatus of input.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420352527.6U CN203930268U (en) | 2014-06-26 | 2014-06-26 | A kind of liquid crystal display digital locating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420352527.6U CN203930268U (en) | 2014-06-26 | 2014-06-26 | A kind of liquid crystal display digital locating device |
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| CN203930268U true CN203930268U (en) | 2014-11-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391385A (en) * | 2014-09-27 | 2015-03-04 | 中航华东光电有限公司 | Positioning method of multifunctional liquid crystal screen |
| CN104567675A (en) * | 2014-12-29 | 2015-04-29 | 福建华冠光电有限公司 | Conveying precision monitoring method for double small liquid crystal panels |
-
2014
- 2014-06-26 CN CN201420352527.6U patent/CN203930268U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391385A (en) * | 2014-09-27 | 2015-03-04 | 中航华东光电有限公司 | Positioning method of multifunctional liquid crystal screen |
| CN104567675A (en) * | 2014-12-29 | 2015-04-29 | 福建华冠光电有限公司 | Conveying precision monitoring method for double small liquid crystal panels |
| CN104567675B (en) * | 2014-12-29 | 2017-08-15 | 福建华冠光电有限公司 | Biplate small size liquid crystal panel transports accuracy monitoring method |
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