CN100464210C - Apparatus for measuring reflectance, method for measuring reflectance and method for manufacturing display panel - Google Patents
Apparatus for measuring reflectance, method for measuring reflectance and method for manufacturing display panel Download PDFInfo
- Publication number
- CN100464210C CN100464210C CNB2006101531802A CN200610153180A CN100464210C CN 100464210 C CN100464210 C CN 100464210C CN B2006101531802 A CNB2006101531802 A CN B2006101531802A CN 200610153180 A CN200610153180 A CN 200610153180A CN 100464210 C CN100464210 C CN 100464210C
- Authority
- CN
- China
- Prior art keywords
- aforementioned
- base plate
- aforesaid base
- lighting source
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
- G01B11/0625—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating with measurement of absorption or reflection
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
- G02F1/13318—Circuits comprising a photodetector
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/58—Arrangements comprising a monitoring photodetector
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2203/00—Function characteristic
- G02F2203/69—Arrangements or methods for testing or calibrating a device
Abstract
A reflectance mensuration apparatus is obtained which can efficiently survey the scattering characteristic and the reflectance characteristic in the substrate panel. The reflectance mensuration apparatus (100) that one manner of the invention relates to, comprises: a carrying stage (102) for carrying the substrate (101) as the mensured thing; a first light source (103) and a second light source (105) emitting the illumination light to the substrate (101) disposed oppositely on the carrying stage (102); and a first detector (104) and a second detector (106) having the optical receiving elements which receive the reflection light reflected by the substrate from the illumination light emitted from the first light source (103) and the second light source (105); the first light source (103) illuminates light to the substrate (101) with an arbitrary angle, while the second light source (105) illuminates light to the substrate (101) in a circularity.
Description
Technical field
The present invention relates to the manufacture method of apparatus for measuring reflectance, measuring reflectance method and display panel, particularly the manufacture method of apparatus for measuring reflectance, measuring reflectance method and the display panel that can measure the reflection characteristic and the scattering properties of substrate.
Background technology
At present, display device is widely used as maintaining the interface (interface) of people and equipment, and obtained unusual significant progress. because liquid crystal indicator has advantages such as the slim consumed power of light weight is low, so, be applied to various uses such as portable information terminal and notebook (note) PC.
In recent years, utilization is extensively popularized from reflective liquid crystal display panel and semi-transmission type display panels that the light of outside incident shows. such display panels, in order to obtain the bright display characteristic of easily seeing, require to make external light reflection reflectance coating the reflectivity height and the outer light of incident is concentrated reflect in a certain arbitrarily angled such scattering properties.
Therefore, as described in patent documentation 1, in the display panels of in the past reflectivity and semi-transmission type, adopt the high aluminium (aluminum) of reflectivity (Al) be or metal (metal) film that silver (Ag) is as reflectance coating. and, lower floor at reflectance coating is provided with concaveconvex shape, obtains above-mentioned desirable scattering properties.
; such display panels; utilize photoetching process (photo lithographyprocess) to connect up and electrode pattern forms (patterning) on glass insulativity such as (glass) substrate and make. for example; when having used the substrate of 400mm * 500mm size; if video screen size (size) is the display panels of 2 inches (inch), then substrate can dispose and form the pattern that about 100 display panels use and make.
In the pattern that the display panels of so making is used, exist on the technology (process) that inevitable reflection distributes in real estate with the reflectivity of metal film and reflectance coating lower floor concaveconvex shape distributes in real estate. therefore, a plurality of display panels that need form configuration on substrate are with each of patterns, measure reflection characteristic, scattering properties etc., carry out whether qualified judgement.Thereby, check needed time growth, become the main cause that productive capacity is reduced.
In the past, measured the method for inspection efficiently, do not disclose clearly about the reflection characteristic of the pattern so a plurality of display panels that form in the substrate configured in one piece used.But for example in patent documentation 2, though the purpose of measuring is different with the present invention, the determination object thin plate (sheet) that discloses a kind of high speed and had a plurality of spectral reflectances to measure the zone to two-dimensional arrangement accurately carries out method for measuring.
The assay method that patent documentation 2 is put down in writing, be a kind of by adopting beam split lighting source and CCD (charge-coupled image sensor) (Charge Coupled Device) camera (camera) reflectivity to be measured by the coordinate of each determination object thin plate, obtain the method for the Two dimensional Distribution data of reflectivity. still, if consider from the viewpoint of measuring number of times, then the result need carry out the mensuration of reflection characteristic repeatedly according to the pattern number that configuration is formed on the display panels on the substrate. therefore, be not suitable for the efficient assay method in the such technical field of the present invention.
Patent documentation 1: the spy opens flat 6-175126 communique
Patent documentation 2: the spy opens flat 10-122967 communique
Apparatus for measuring reflectance in the past, utilize a such photo detector of CCD camera a lighting source to be measured separately according to point (point), measure by carrying out above-mentioned independent mensuration repeatedly by each coordinate, thus, obtain the Two dimensional Distribution data of substrate surface reflectivity. therefore, exist and measure increased frequency, need to cause for a long time the low problem points of determination efficiency because of measuring.In addition, in order to obtain scattering properties, and need measure, make thus to measure to become numerous and diverse by other approach.
Summary of the invention
The present invention proposes in order to solve the above problems a little, and its purpose is, obtains apparatus for measuring reflectance and the assay method can be efficiently the reflection characteristic in the real estate and scattering properties measured.
The related apparatus for measuring reflectance of first mode of the present invention comprises: to carry out the objective table of mounting as the substrate of determinand; To the lighting mechanism of mounting in the aforesaid base plate irradiating illumination light of aforementioned objective table; With the detecting device that possesses photo detector, described photo detector receives the reflected light that is reflected by aforesaid base plate from the illumination light of aforementioned lighting mechanism irradiation; Wherein, aforementioned lighting mechanism possesses: with angle arbitrarily to first lighting source of aforesaid base plate irradiates light with second lighting source of ring-type to the aforesaid base plate irradiates light.By such formation, can measure reflection characteristic and scattering properties in the real estate efficiently.
The related apparatus for measuring reflectance of second mode of the present invention, in above-mentioned apparatus for measuring reflectance, aforesaid detector possesses a plurality of first photo detectors, this first photo detector receives the reflected light that is reflected by aforesaid base plate from the illumination light of aforementioned first lighting source irradiation, and arrange so that the mode on a limit being parallel to aforesaid base plate is approximate bandedly, once measure along the intensity of reflected light in the zone on the aforementioned limit of aforesaid base plate by aforementioned a plurality of first photo detectors, aforesaid base plate is moved on one side along the direction vertical with an aforementioned limit of aforesaid base plate, carry out the mensuration of intensity of reflected light on one side repeatedly, measure the Two dimensional Distribution of the intensity of reflected light of aforesaid base plate.By such formation, can easily determine the Two dimensional Distribution data of the intensity of reflected light in the real estate at short notice, thereby can obtain reflection characteristic easily.
The apparatus for measuring reflectance that Third Way of the present invention is related, in above-mentioned apparatus for measuring reflectance, aforementioned second lighting source according to the mode of the surperficial almost parallel of its circumferentia and aforesaid base plate be configured in aforesaid base plate directly over, aforesaid detector possesses second photo detector, this second photo detector be configured in aforementioned second lighting source directly over, and be configured in by circumferential center, with the straight line of the Surface Vertical of substrate on.By such formation, can measure from the intensity of reflected light of determinand vertical reflection, thereby but high-precision measuring goes out scattering properties.
The related apparatus for measuring reflectance of cubic formula of the present invention in above-mentioned apparatus for measuring reflectance, to aforementioned first photo detector, possesses the wavelength switching mechanism that illumination light or reflected light is switched to any wavelength from aforementioned first lighting source.By such formation, can determine the spectral reflectance of the substrate of determinand.
The related apparatus for measuring reflectance of the 5th mode of the present invention, in above-mentioned apparatus for measuring reflectance, aforementioned objective table be provided with the known standard of reflectivity with reference to reflecting plate.By such formation, can obtain the relative reflectance of determinand according to the difference of the intensity of reflected light of reference reflecting plate and determinand.
The 6th mode of the present invention relates to a kind of measuring reflectance method, in above-mentioned measuring reflectance method, by apparatus for measuring reflectance reflectivity is measured with lighting mechanism, described lighting mechanism is provided with second lighting source of first lighting source and ring-type, described measuring reflectance method, will be as the substrate-placing of determinand in objective table, with incident angle arbitrarily from aforementioned first lighting source to aforesaid base plate irradiating illumination light, by the catoptrical intensity of first photo detector mensuration from aforesaid base plate, and make objective table incide the position of aforesaid base plate from illumination light from aforementioned first lighting source, move position from aforesaid base plate to the illumination light from aforementioned second lighting source that incide, come from aforementioned second lighting source aforesaid base plate irradiating illumination light, and measure catoptrical intensity from aforesaid base plate by second photo detector.Thus, can determine real estate interior reflection characteristic and scattering properties efficiently.
The measuring reflectance method that the 7th mode of the present invention is related, in above-mentioned measuring reflectance method, by approximate a plurality of first photo detectors arranged of mode bandedly with a limit being parallel to aforesaid base plate, once carry out measuring along the intensity of reflected light in the zone on the aforementioned limit of aforesaid base plate, and along with the aforementioned direction that the limit is vertical of aforesaid base plate, make aforesaid base plate be moved horizontally to opposed another limit in turn from an aforementioned limit, carry out the mensuration of intensity of reflected light repeatedly, measure the Two dimensional Distribution data of the reflectivity of aforesaid base plate.Thus, can easily determine the Two dimensional Distribution data of the intensity of reflected light in the real estate at short notice, obtain reflection characteristic easily.
The related measuring reflectance method of all directions formula of the present invention, in above-mentioned measuring reflectance method, from aforementioned second lighting source to aforesaid base plate irradiating illumination light, to after measuring from the reflected light of aforesaid base plate, the distance of aforesaid base plate and aforementioned second lighting source is changed, the effective incident angle that shines the illumination light of aforesaid base plate from aforementioned second lighting source is changed, the intensity of reflected light from aforesaid base plate is measured.Thus, can measure the scattering properties of determinand easily.
The measuring reflectance method that the 9th mode of the present invention is related in above-mentioned measuring reflectance method, is omitted the mensuration of utilizing aforementioned second photo detector.Like this, under the situation of not carrying out scattering properties mensuration, also can adopt the present invention.
The measuring reflectance method that the tenth mode of the present invention is related in above-mentioned measuring reflectance method, is omitted the mensuration of utilizing aforementioned first photo detector.Like this, under the situation of not carrying out reflection characteristic mensuration, also can adopt the present invention.
The 11 mode of the present invention relates to a kind of manufacture method of display panel, forms the pattern that display panel is used on substrate, carries out the inspection of aforementioned pattern by above-mentioned any one measuring reflectance method.Thus, can measure, check out good product, defective products at short notice, thereby throughput rate is improved the reflection characteristic of the pattern that on substrate, forms.
The manufacture method of the display panel that the 12 mode of the present invention is related, it is the manufacture method of the display panel checked by the pattern that above-mentioned any one measuring reflectance method is used display panel, on aforesaid base plate, form the pattern that a plurality of display panels are used, from the aforementioned first lighting source irradiates light, carrying out the whether good of aforementioned pattern judges, based on aforementioned judged result, to being judged as the patterned illumination light of good product, carry out the inspection of pattern from aforementioned second lighting source.Thus, can judge efficiently that whether qualified the pattern that display panels uses is, throughput rate is improved.
Can obtain efficiently measuring the interior reflection characteristic of real estate and the apparatus for measuring reflectance and the assay method of scattering properties.
Description of drawings
Fig. 1 is the figure of an example of the formation of expression apparatus for measuring reflectance involved in the present invention.
Fig. 2 is the figure of an example of the formation of expression reflection measurement portion involved in the present invention.
Fig. 3 is the figure of the configuration relation of expression first detecting device involved in the present invention and substrate.
Fig. 4 is the figure of an example of the formation of expression diffuse transmission measuring portion involved in the present invention.
Fig. 5 is the figure of an example of the formation of expression substrate involved in the present invention.
Fig. 6 is the process flow diagram of expression measuring reflectance method involved in the present invention.
Embodiment
Below, use accompanying drawing to describe to using embodiments of the present invention.The following description is that embodiments of the present invention are described, and the present invention is not limited to following embodiment. for making clear of realizing illustrating, following record is suitably omitted, is simplified.
With reference to Fig. 1, embodiments of the present invention 1 related apparatus for measuring reflectance is described. Fig. 1 is the figure of an example of the formation of the related apparatus for measuring reflectance 100 of expression embodiment 1. here, the situation of measuring rectangular-shaped substrate 101 is described. as shown in Figure 1, the related apparatus for measuring reflectance 100 of present embodiment comprises: objective table 102, first lighting source 103, first detecting device 104, second lighting source 105 and second detecting device 106 etc.
In the present embodiment, first lighting source 103 and first detecting device 104 are reflection measurement portions 107 that the reflection characteristic of substrate 101 is measured.In addition, second lighting source 105 and second detecting device 106 are diffuse transmission measuring portions 108 that the scattering properties of substrate 101 is measured.That is, the related apparatus for measuring reflectance 100 of present embodiment has reflection measurement portion 107 and 108 both sides of diffuse transmission measuring portion concurrently in same device (unit (unit)), is the device that can carry out the mensuration of the mensuration of reflection characteristic and scattering properties.
Objective table 102 is uploaded substrate 101. objective tables 102 that are equipped with as determinand and is configured to can move along stepping (stepping) width of X-Y direction (horizontal direction) with any setting by executor travel mechanisms such as (manipulator).And objective table 102 is configured to also can move along Z direction (vertical direction).And objective table 102 is provided with not shown and standard reflecting plate that reflectivity is known (below be made as standard white plate).Thus, according to the difference of the intensity of reflected light of reference reflecting plate and substrate 101, can obtain the relative reflectance of determinand.
Here, with reference to Fig. 2, the formation of reflection measurement portion 107 being described. Fig. 2 is the figure of an example of the formation of expression reflection measurement portion 107.As shown in Figure 2, reflection measurement portion 107 comprises: first lighting source 103 and first detecting device 104.First lighting source 103 and first detecting device 104 are configured in the top of objective table 102. and first lighting source 103 is pressed linearity to the area illumination illumination light along a limit of substrate 101 with incident angle θ arbitrarily.As first lighting source 103, for example can adopt xenon lamp (xenon lamp) etc.
Shown in the dotted line of Fig. 2, can change by the angle that makes first lighting source 103 changes from the incident angle θ of the light of 103 pairs of substrate 101 incidents of first lighting source.Perhaps, move along Z direction (vertical direction), also can change from the incident angle θ of the light of 103 pairs of substrate 101 incidents of first lighting source by making objective table 1.
104 receptions of first detecting device, are measured intensity of reflected light afterwards from the reflected light of substrate 101 from 103 pairs of substrate 101 irradiates lights of first lighting source.On first detecting device 104, be provided with a plurality of photo detectors (not shown) that are configured to approximate band shape along a limit of substrate 101.That is, on first detecting device 104, dispose a plurality of photo detectors, receive along the reflected light in the zone on 101 1 limits of substrate.And first test section 104 is provided with determination part, is used for the catoptrical intensity that receives by a plurality of photo detectors is measured.
Fig. 3 represents the configuration relation of such detecting device 104 and substrate 101, objective table 102, first lighting source 103. as shown in Figure 3, and according to disposing the mode configuration detector 104 of a plurality of photo detectors abreast with a limit of substrate 101.Move by objective table 102 direction shown in the white arrow in Fig. 3, by the substrate 101 of mounting on objective table 102 also in Fig. 3 the direction shown in the white arrow move.Thus, substrate 101 moves horizontally along the rectangular direction of orientation with the photo detector of first detecting device 104 of line spread.That is, keeping the state of certain distance, mounting to have the objective table 102 of substrate 101 vertical direction relative to an edge of substrate 101 with the detecting device 104 and the surface of substrate 101 moves.And, make by surface that objective table 102 is parallel in turn to be moved relative to substrate 101, carry out the mensuration of intensity of reflected light repeatedly, can measure the Two dimensional Distribution data of the intensity of reflected light of substrate 101.In this first detecting device 104,, can easily obtain the Two dimensional Distribution data of the reflectivity of substrate 101 at short notice based on the Two dimensional Distribution data of the intensity of reflected light after measuring.
Then, with reference to Fig. 4 the formation of diffuse transmission measuring portion 108 being described. Fig. 4 is the figure of an example of the formation of expression diffuse transmission measuring portion 108.The ring-shaped lighting light from second lighting source 105 of diffuse transmission measuring portion 108 subtend substrates, 101 irradiations is measured by the intensity of reflected light of vertical reflection from substrate 101, measures scattering properties thus.
Diffuse transmission measuring portion 108 comprises the light of second lighting source 105 and 105 pairs of substrates of second detecting device, 106. second lighting sources, 101 irradiation ring-types.As second lighting source 105, for example can use xenon lamp and optical fiber (fiber).Light from xenon lamp is incided in the multifiber. and, the light emergence face of a plurality of optical fiber is configured to ring-type.Thus, can access rayed lighting source circlewise.
As shown in Figure 4, second lighting source 105 is according to the surperficial approximately parallel mode of its circumferentia and substrate 101, be configured in substrate 101 directly over. and, from the light of second lighting source 105 irradiation, be radiated at the line that circumferential center is connected with substrate 101 Surface Vertical and the crossing position, surface of substrate 101.The zone of the substrate 101 of illuminated light becomes determined regional P. promptly by this second lighting source 105, and the straight line of the Surface Vertical by circumferential center and substrate 101 and the intersection point of substrate 101 become irradiation area P.In addition, second detecting device 106 is configured in the position corresponding with the center of second lighting source 105.
And, with connecting the line of second lighting source 105 and determined regional P,, be set at from the incident angle Φ of the relative substrate 101 of illumination light of second lighting source, 105 irradiations with the line angulation that is connected circumferential center and determined regional P.The incident angle Φ of this second lighting source 105 can change by second lighting source 105 is moved along Z direction (vertical direction).That is,, make from the incident angle Φ variation of the relative substrate 101 of illumination light of second lighting source, 105 irradiations by changing the distance of second lighting source 105 and substrate 101.For example as shown in Figure 4, by second lighting source 105 is moved to the position shown in the solid line from position shown in dotted lines in Figure 4, can shorten the distance of second lighting source 105 and substrate 101, make the incident angle Φ of second lighting source 105 be changed to incident angle Φ '.Perhaps, move along Z direction (vertical direction), shorten the distance of second lighting source 105 and substrate 101, also can make from the light of second lighting source 105 and change into incident angle Φ ' to the incident angle Φ of substrate 101 by making objective table 102.
As shown in Figure 4, second detecting device 106 be configured in second lighting source 105 directly over.That is, have according to from top to bottom arranged in order: substrate 101, second lighting source 105, second detecting device 106. and, second lighting source 106 is configured on the line that the Surface Vertical with the circumferential center of second lighting source 105 and substrate 101 is connected.That is, second detecting device 106 be configured in by circumferential center, with the straight line of the Surface Vertical of substrate 101 on.
Second detecting device 106 receives ring-shaped lighting light from second lighting source 105 scattered light after by substrate 101 reflections, measures scattering properties.Can adopt .CCD cameras such as CCD camera to have intrinsic angle of visibility as second detecting device 106, if determined setting height(from bottom), then will determine the mensuration part on the substrate 101 thus. therefore, when wanting to enlarge the reduced field of view angle, before also lens optical systems such as (lens) can being placed on the CCD camera, obtain the angle of visibility that needs.
Here, assay method when using above-mentioned apparatus for measuring reflectance 100 to carry out the mensuration of the reflection characteristic of substrate 101 and scattering properties describes. at first, carrying out the reflection characteristic of substrate 101 measures. particularly, at first with these substrate 101 mountings to objective table 102.
Then, make objective table 102 move to the initial position of reflection measurement portion 107.Afterwards, from first lighting source 103 to substrate 101 irradiating illumination light, and utilize first detecting device 104 to receive reflected light from substrate 101. from a limit of substrate 101 to this opposed limit, limit till, similarly from first lighting source 103 to substrate 101 irradiating illumination light, and by the reflected light of first detecting device, 104 receptions from substrate 101. thus, can easily determine the Two dimensional Distribution data of the intensity of reflected light in the real estate at short notice.Can thus, can measure reflection characteristic easily according to the Two dimensional Distribution that this intensity of reflected light distributes and the intensity of reflected light distribution of the standard white plate of mensuration obtains the reflectivity of substrate 101 in advance.
At this moment, make from the illumination light of first lighting source 103 irradiation and switch to a certain set wavelength and beam split. for example, can wait and realize by between lighting source 103 and detecting device 104, disposing bandpass filter (band-pass-filter) equiwavelength switching mechanism.Mensuration can be implemented by a kind of wavelength, also can adopt the multi-wavelength to implement in further detail.Thus, can carry out the mensuration of intensity of reflected light more accurately.
Then, carrying out scattering properties measures.Moving stage 102 is so that second lighting source 105 is configured in the determined regional P on the substrate 101.That is, determined regional P be configured in become annular second lighting source 105 under the position.Then, from second lighting source, 105 irradiating illumination light, the reflected light that utilizes second detecting device 106 to receive from determined regional P is measured scattering properties.Thus, do not need to be undertaken the mensuration of scattering properties, can carry out the reflection characteristic and the scattering properties mensuration of substrate 101 by same device by other approach.
And in order at length to study scattering properties, the objective table 102 that also can tilt is measured.Thus, can further study careful scattering properties.
In embodiment 2, the situation that the substrate 101 that is formed with a plurality of patterns that display panels uses with matrix (matrix) shape is measured is described as determinand.Apparatus for measuring reflectance 100 adopts above-mentioned equipment shown in Figure 1.Therefore, the structure of apparatus for measuring reflectance 100 is identical with Fig. 1, the explanation that repeat the Therefore, omited.
Fig. 5 represents the formation of substrate 101. as shown in Figure 5, the pattern 109 that display panels is used is configured on the substrate 101 in the two-dimensional matrix mode.As shown in Figure 5, with the angle of a certain substrate 101 as reference point 110, for example with transverse direction by alphabet (alphabet) order be labeled as A, B, C, D ..., with longitudinal direction be labeled as 1,2,3,4 ... number, by with these two combination, set the address (address) of pattern 109.
Be arranged at the objective table 102 in the apparatus for measuring reflectance 100, can move along X-Y direction (horizontal direction) with the step width of any setting.The pattern position that step width is used according to the display panels that is formed at substrate 101 is set.
Here, with reference to Fig. 6, to adopting above-mentioned apparatus for measuring reflectance 100 to measure the reflection characteristic of this substrate 101 and the assay method of scattering properties describes. at this illustrated assay method, be the part of reflection-type or semi-transmission type display panels manufacturing process.Promptly, this assay method is used for following operation, promptly, not under the state of the display panels finished final cutting out from substrate, but be configured to be formed under the state of the substrate 101 on the substrate at the pattern of a plurality of display panels, mensuration is formed on the reflection characteristic and the scattering properties of the reflectance coating on the substrate, comes good product, defective products are checked.
Fig. 6 is the process flow diagram (flow chart) that the assay method that adopts above-mentioned apparatus for measuring reflectance 100, mensuration reflection characteristic and scattering properties is described.At first, the reflection characteristic of carrying out substrate 101 is measured (step (step) S101).Particularly, at first with these substrate 101 mountings to objective table 102.At this moment, the reference point 110 of substrate 101 becomes the initial point of objective table 102.
Then, make objective table 102 move to the initial position of reflection measurement portion 107.At this moment, the optical element that enjoys of first detecting device 104 disposes along the A row pattern 109 that forms on substrate 101. afterwards, from first lighting source 103 with line (line) shape to substrate 101 irradiating illumination light, and receive reflected light from substrate 101 by first detecting device 104.That is, the unified intensity of reflected light that belongs to 1～9 pattern 109 of A row is measured.
Then, moving stage 102, so that the pattern 109 of the B on the substrate 101 row becomes the position corresponding with first detecting device 104. then, equally from first lighting source 103 to substrate 101 irradiating illumination light, and receive reflected light from substrate 101 by first detecting device 104. promptly, the unified reflection characteristic that belongs to 1～9 pattern 109 of B row is measured.By carrying out these actions repeatedly, the reflection characteristic of substrate 101 integral body is measured from A to I row.Thus, can easily determine the Two dimensional Distribution data of the intensity of reflected light in the real estate at short notice.
At this moment, making from the illumination light beam split of first lighting source, 103 irradiations is a certain set wavelength. mensuration can be implemented by a kind of wavelength, also can adopt the multi-wavelength to implement in more detail. thus, can further carry out the mensuration of reflection characteristic accurately.
Then, whether qualifiedly judge (step S102) by what the intensity of reflected light after measuring was carried out each pattern 109. particularly, the measurement result of comparison step S101 and the intensity of reflected light of the standard sample of mensuration in advance carry out whether qualifiedly judging.For example, in the present embodiment, the reflection strength 1 of relative standard sampling, with measurement result less than 0.8 pattern 109 is made as NG (step S103). and in addition, be that pattern 109 more than 0.8 is judged as OK with measurement result.Thus, on substrate 101, mixing pattern 109 that is judged as NG and the pattern 109. that is judged as OK
Then, be object with the pattern 109 that is judged as OK in the reflection characteristic mensuration, carry out scattering properties and measure (step S104).Moving stage 102 is judged as on the pattern 109 of OK so that second lighting source 105 is configured in the pattern 109 on the substrate 101.That is, the pattern 109 that is judged as OK be configured in become annular second lighting source 105 under the position. then, from second lighting source, 105 irradiating illumination light, the reflected light that receives from the pattern that is judged as OK by second detecting device 106.All object patterns 109 that are judged as OK are implemented this mensuration.
Then, utilize the measurement result of this scattering properties, product specification is carried out whether qualified judgement (step S105). thus, the pattern 109 that does not satisfy set whether qualified judgment standard is judged as NG (step S106), and only has the pattern 109 that meets (clear) whether qualified judgment standard to be judged as OK (step S107).
And,, also can make objective table 102 tilt to measure in order to study scattering properties in great detail. thus, can further study scattering properties meticulously.
Like this, because in the manufacturing process of reflection-type of seeking high reflectivity and good scattering properties or semi-transmission type display panels, can measure, check the reflection characteristic and the scattering properties of pixel display part efficiently at short notice, so, can make reflection-type bright, that display quality is high or semi-transmission type display panels efficiently.
And, not under the state of the display panels finished final cutting out from substrate, but under the pattern arrangement of a plurality of display panels is formed on state on the substrate, reflection characteristic and scattering properties to reflectance coating are measured, so, can check out good product, defective products at short notice.Therefore, the manufacturing cost (cost) that has taken place to reflect under the situation that shows defective products can be suppressed to be Min..
And, utilize whether qualified in the measurement result of intensity of reflected light to judge and at first carry out first screening, thereby can only will meet the determination object of the OK product of this first screening as final scattering properties. thus, can carry out the whether qualified of pattern 109 that display panels uses efficiently judges. therefore, by shortening the supervision time of pattern 109, throughput rate is improved.
In addition, in the present embodiment, will be from the incident angle of second lighting source 105 as a condition, but also can be used as two more than the condition.That is, after the scattering properties of the pattern 109 that is judged as OK is measured, objective table 102 is moved along the Z direction.That is to say, the distance between second lighting source 105 and the substrate 101 is changed, can similarly carry out scattering properties once more and measure. thus, can obtain more detailed measurement result, thereby can carry out more careful whether qualifiedly judging.
And the emphasis of product specification does not lie in scattering properties, during intensity of reflected light under only having set arbitrarily angled θ, can omit scattering properties yet and measure. promptly, also the result that can only measure by reflection characteristic carries out the whether qualified of pattern 109 and judges.
And, also can omit reflection characteristic and measure, and only measure scattering properties.The intensity of reflected light of arbitrarily angled Φ that can be by the result that obtains now, carrying out the whether qualified of intensity of reflected light judges. in addition, also can carry out the analysis of the scattering properties of NG pattern by measuring the scattering properties that becomes the pattern of NG in the reflection characteristic mensuration.
Like this, the apparatus for measuring reflectance 100 that present embodiment is related has reflection measurement portion 107 and diffuse transmission measuring portion 108 concurrently in same device (unit).Therefore, can obtain easily determining at short notice the intensity of reflected light in the real estate the Two dimensional Distribution data, measure reflection characteristic and can efficiently measure the manufacture method of apparatus for measuring reflectance, measuring reflectance method and the display panel of scattering properties.
Claims (12)
1. apparatus for measuring reflectance comprises:
To carry out the objective table of mounting as the substrate of determinand;
To the lighting mechanism of mounting in the aforesaid base plate irradiating illumination light of aforementioned objective table; With
The detecting device that possesses photo detector, described photo detector receive the reflected light that is reflected by aforesaid base plate from the illumination light of aforementioned lighting mechanism irradiation; It is characterized in that,
Aforementioned lighting mechanism possesses: with angle arbitrarily to first lighting source of aforesaid base plate irradiating illumination light with second lighting source of ring-type to aforesaid base plate irradiating illumination light.
2. apparatus for measuring reflectance according to claim 1, it is characterized in that, aforesaid detector possesses a plurality of first photo detectors, this first photo detector receives the reflected light that is reflected by aforesaid base plate from the illumination light of aforementioned first lighting source irradiation, and arrange so that the mode on a limit being parallel to aforesaid base plate is approximate bandedly
Once measure along the intensity of reflected light in the zone on the aforementioned limit of aforesaid base plate by aforementioned a plurality of first photo detectors, aforesaid base plate is moved on one side along the direction vertical with an aforementioned limit of aforesaid base plate, carry out the mensuration of intensity of reflected light on one side repeatedly, measure the Two dimensional Distribution of the intensity of reflected light of aforesaid base plate.
3. apparatus for measuring reflectance according to claim 1 and 2 is characterized in that, aforementioned second lighting source according to the mode of the surperficial almost parallel of its circumferentia and aforesaid base plate be configured in aforesaid base plate directly over,
Aforesaid detector possesses second photo detector, and this second photo detector is configured in the top of aforementioned second lighting source, and be configured in by circumferential center, with the straight line of the Surface Vertical of substrate on.
4. apparatus for measuring reflectance according to claim 2 is characterized in that, to aforementioned first photo detector, possesses the wavelength switching mechanism that illumination light or reflected light is switched to any wavelength from aforementioned first lighting source.
5. apparatus for measuring reflectance according to claim 1 and 2 is characterized in that, aforementioned objective table be provided with the known standard of reflectivity with reference to reflecting plate.
6. a measuring reflectance method is measured reflectivity by the apparatus for measuring reflectance with lighting mechanism, and described lighting mechanism is provided with second lighting source of first lighting source and ring-type, and described measuring reflectance method is characterised in that,
Will be as the substrate-placing of determinand in objective table,
With incident angle arbitrarily from aforementioned first lighting source to aforesaid base plate irradiating illumination light, measure catoptrical intensity by first photo detector from aforesaid base plate,
And make objective table incide the position of aforesaid base plate from illumination light from aforementioned first lighting source, move position from aforesaid base plate to the illumination light from aforementioned second lighting source that incide,
To aforesaid base plate irradiating illumination light, and measure catoptrical intensity from aforementioned second lighting source from aforesaid base plate by second photo detector.
7. measuring reflectance method according to claim 6, it is characterized in that, by approximate a plurality of first photo detectors arranged of mode bandedly, once carry out measuring along the intensity of reflected light in the zone on the aforementioned limit of aforesaid base plate with a limit being parallel to aforesaid base plate
And along with the aforementioned direction that the limit is vertical of aforesaid base plate, make aforesaid base plate be moved horizontally to opposed another limit in turn from an aforementioned limit, carry out the mensuration of intensity of reflected light repeatedly,
Measure the Two dimensional Distribution data of the reflectivity of aforesaid base plate.
8. according to claim 6 or 7 described measuring reflectance methods, it is characterized in that, from aforementioned second lighting source to aforesaid base plate irradiating illumination light, to after measuring from the reflected light of aforesaid base plate,
The distance of aforesaid base plate and aforementioned second lighting source is changed, the effective incident angle that shines the illumination light of aforesaid base plate from aforementioned second lighting source is changed, the intensity of reflected light from aforesaid base plate is measured.
9. according to claim 6 or 7 described measuring reflectance methods, it is characterized in that, omit the mensuration of utilizing aforementioned second photo detector.
10. measuring reflectance method according to claim 6 is characterized in that, omits the mensuration of utilizing aforementioned first photo detector.
11. the manufacture method of a display panel is characterized in that, forms the pattern that display panel is used on substrate,
Carry out the inspection of aforementioned pattern by the measuring reflectance method of claim 6 or 7.
12. the manufacture method of a display panel is checked pattern by claim 6 or 7 described measuring reflectance methods, it is characterized in that,
On aforesaid base plate, form the pattern that a plurality of display panels are used,
From the aforementioned first lighting source irradiates light, carry out the whether good of aforementioned pattern and judge,
Based on aforementioned judged result, to being judged as the patterned illumination light of good product, carry out the inspection of pattern from aforementioned second lighting source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006031804 | 2006-02-09 | ||
| JP2006031804A JP2007212260A (en) | 2006-02-09 | 2006-02-09 | Reflectance measuring device, reflectance measuring method, and manufacturing method of display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101017254A CN101017254A (en) | 2007-08-15 |
| CN100464210C true CN100464210C (en) | 2009-02-25 |
Family
ID=38490849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101531802A Expired - Fee Related CN100464210C (en) | 2006-02-09 | 2006-12-11 | Apparatus for measuring reflectance, method for measuring reflectance and method for manufacturing display panel |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2007212260A (en) |
| KR (1) | KR100795853B1 (en) |
| CN (1) | CN100464210C (en) |
| TW (1) | TW200736593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596403A (en) * | 2016-11-25 | 2017-04-26 | 中国科学院长春光学精密机械与物理研究所 | Clamping device for measuring reflectivity of curved mirror |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012063269A (en) * | 2010-09-16 | 2012-03-29 | Sony Corp | Measuring apparatus and measuring method |
| JP2012063321A (en) * | 2010-09-17 | 2012-03-29 | Hamamatsu Photonics Kk | Reflectivity measurement device, reflectivity measurement method, film thickness measurement device, and film thickness measurement method |
| CN103344613B (en) * | 2013-07-26 | 2016-09-28 | 杭州远方光电信息股份有限公司 | A kind of material reflection characteristic measurement apparatus and method |
| CN105195468B (en) * | 2014-06-25 | 2017-08-18 | 核工业西南物理研究院 | A kind of method and apparatus of on-line cleaning and the detection mirror of fusion facility first |
| CN104503118B (en) * | 2015-01-22 | 2017-04-26 | 合肥京东方光电科技有限公司 | Panel lead wire detection device and detection method |
| WO2018101023A1 (en) | 2016-11-29 | 2018-06-07 | 株式会社リガク | X-ray reflectivity measurement device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354360A (en) * | 2000-11-22 | 2002-06-19 | 精工爱普生株式会社 | Method and apparatus for appraising liquid crystal panel |
| JP2003028756A (en) * | 2001-07-11 | 2003-01-29 | Chuo Seiki Kk | Reflected light measuring device |
| JP2004177162A (en) * | 2002-11-25 | 2004-06-24 | Alps Electric Co Ltd | Reflection rate measuring instrument |
| JP2006029833A (en) * | 2004-07-12 | 2006-02-02 | Hikari Physics Kenkyusho:Kk | Method and apparatus for evaluating optical element |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4385419B2 (en) * | 1998-11-30 | 2009-12-16 | 株式会社ニコン | Appearance inspection method and appearance inspection apparatus |
| AU4277501A (en) * | 2000-03-24 | 2001-10-03 | Olympus Optical Co., Ltd. | Apparatus for detecting defect |
| TWI285738B (en) * | 2000-09-26 | 2007-08-21 | Olympus Corp | Defect detecting apparatus and computer readable medium |
| KR100568725B1 (en) * | 2003-12-30 | 2006-04-07 | 삼성전자주식회사 | Apparatus for inspecting a defect |
| KR100732349B1 (en) * | 2005-04-29 | 2007-06-27 | 주식회사 에이디피엔지니어링 | Apparatus for inspecting the substrate |
-
2006
- 2006-02-09 JP JP2006031804A patent/JP2007212260A/en active Pending
- 2006-11-14 TW TW095142030A patent/TW200736593A/en unknown
- 2006-12-05 KR KR1020060121920A patent/KR100795853B1/en not_active IP Right Cessation
- 2006-12-11 CN CNB2006101531802A patent/CN100464210C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354360A (en) * | 2000-11-22 | 2002-06-19 | 精工爱普生株式会社 | Method and apparatus for appraising liquid crystal panel |
| JP2003028756A (en) * | 2001-07-11 | 2003-01-29 | Chuo Seiki Kk | Reflected light measuring device |
| JP2004177162A (en) * | 2002-11-25 | 2004-06-24 | Alps Electric Co Ltd | Reflection rate measuring instrument |
| JP2006029833A (en) * | 2004-07-12 | 2006-02-02 | Hikari Physics Kenkyusho:Kk | Method and apparatus for evaluating optical element |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596403A (en) * | 2016-11-25 | 2017-04-26 | 中国科学院长春光学精密机械与物理研究所 | Clamping device for measuring reflectivity of curved mirror |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200736593A (en) | 2007-10-01 |
| KR20070081079A (en) | 2007-08-14 |
| KR100795853B1 (en) | 2008-01-21 |
| CN101017254A (en) | 2007-08-15 |
| JP2007212260A (en) | 2007-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100464210C (en) | Apparatus for measuring reflectance, method for measuring reflectance and method for manufacturing display panel | |
| KR101174081B1 (en) | Plane substrate auto-test system and the method thereof | |
| CN100582717C (en) | System for inspecting surfaces with improved light efficiency | |
| JP5546103B2 (en) | Device for controlling transparent or reflective parts | |
| CN101887030A (en) | Method and system for detecting defects of surface and/or interior of transparent substrate | |
| JP4847128B2 (en) | Surface defect inspection equipment | |
| CN105424717A (en) | Optical detection device for detecting multiple defects | |
| CA2467624A1 (en) | Procedure and appliance for touch-free examinations of objects, especially regarding their surface character | |
| US8823930B2 (en) | Apparatus and method for inspecting an object | |
| JP2002082067A (en) | Substrate inspecting device | |
| JP4575202B2 (en) | Defect inspection method and defect inspection apparatus for transparent plate-like body | |
| KR20180116154A (en) | Inspection apparatus for cover glass | |
| KR20070094471A (en) | Visual inspection apparatus | |
| JP7138194B2 (en) | Image inspection device | |
| CN207866734U (en) | Matrix form vision detection system for transparent material defects detection | |
| KR102633672B1 (en) | Methods and apparatus for detecting surface defects on glass sheets | |
| JP2017053775A (en) | Apparatus for imaging inside of light-transmissive object, and inspection apparatus | |
| KR101350786B1 (en) | External coaxial illumination apparatus with uniform illuminance distribution | |
| KR20040053375A (en) | Device for appearance inspection | |
| WO2020152866A1 (en) | Image inspection device | |
| TW201732274A (en) | Lighting apparatus and inspection apparatus improving easily enhance the irradiation intensity of light of average unit area on an object | |
| CN211086131U (en) | Detection equipment | |
| KR20120086333A (en) | High speed optical inspection system with adaptive focusing | |
| KR101379817B1 (en) | Apparatus for inspecting back light assembly and apparatus for inspecting display device | |
| CN112098421A (en) | Dark field detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20171211 |