CN203950092U - The testing fixture of display panels - Google Patents

The testing fixture of display panels Download PDF

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Publication number
CN203950092U
CN203950092U CN201420272124.0U CN201420272124U CN203950092U CN 203950092 U CN203950092 U CN 203950092U CN 201420272124 U CN201420272124 U CN 201420272124U CN 203950092 U CN203950092 U CN 203950092U
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China
Prior art keywords
display panels
platform
substrate
testing fixture
polaroid
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CN201420272124.0U
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Chinese (zh)
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昆田信生
井村秀之
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Japan Display Central Inc
Japan Display Inc
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Japan Display Central Inc
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Priority to JP2013132848A priority Critical patent/JP2015007575A/en
Priority to JP2013-132848 priority
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Abstract

A kind of testing fixture of display panels is provided, can and sees through the defect that light easily detects friction lines etc. by reflected light.Use testing fixture (10), this testing fixture comprises: back of the body lamp unit (2); The 1st polaroid (3), is disposed at the outgoing plane (21) of above-mentioned back of the body lamp unit; Substrate bears platform (1), the place ahead devices spaced apart of above-mentioned the 1st polaroid configure, keep display panels (5); The 2nd polaroid (4), the more the place ahead of bearing platform and display panels at aforesaid substrate, devices spaced apart and being movably held; And the lamp (72) used of indirect illumination; Substrate bears platform and comprises: rectangular-shaped platform frame portion (15); Tabular glazing bar (16,17), bears at substrate on the thickness direction of platform and extends; Adsorption cup (11) and absorption flexible pipe (12), be installed on this glazing bar; And supporting driving mechanism (6), supporting frame portion the pitch angle that makes substrate bear platform suitably change.

Description

The testing fixture of display panels
Technical field
The utility model relates to the testing fixture of display panels.Be particularly related to for to large substrate not inputting liquid crystal drive voltage, drive under the state of signal etc. the testing fixture of irregular, the flaw in detection display region, described large substrate is for obtaining the display panels of the infiltration type that is pasted with polaroid on two sides.
Background technology
Liquid crystal indicator as the active matric-type of most representative flat display apparatus generally consists of display panels and drive system thereof.Display panels consists of mutual opposed a pair of substrate and the liquid crystal layer that is clamped between this pair of substrate, in the viewing area of display panels, with the rectangular pixel (sub-pixel) that disposes.A side in above-mentioned a pair of substrate is array base palte, by each pixel, possesses on-off element (normally TFT), possesses the capable sweep trace configuring of the matrix of arranging along pixel and the signal wire configuring along matrix column.The state of orientation of the liquid crystal molecule comprising in liquid crystal layer is by the electric field controls that puts on liquid crystal layer.
When manufacturing liquid crystal indicator, general after the manufacture of array base palte or the manufacture of display panels carry out afterwards etc. the inspection that the existence of foreign matter or various defect are detected.As such inspection, except checking the checking of the short circuit etc. of wiring closet, to display panels input liquid crystal drive voltage or drive signal etc. and lighting a lamp of carrying out check, also do not apply liquid crystal drive voltage etc. and under the state of irradiating illumination light, check " visual examination " of flaw etc.
In patent documentation 1, following technology has been proposed: when visual examination has or not the foreign matter of array base palte (TFT forms substrate) or defect etc. bad, about keeping the platform of the frame shape of array base palte, make " oscillating table " that can make according to the operation of visual operator pitch angle change, and in its rear side, the lighting device that transmission illumination is used is installed.Like this, by the reflected light under the various angle of visibilities of visualization and through light, can effectively detect foreign matter or defect etc.
In patent documentation 2, recorded carrying out lighting a lamp of display panels while checking, on the light diffusing sheet being arranged on back of the body lamp unit, mask (mask) is installed.On the light diffusing sheet that mask has been installed, directly load the mother substrate (" crystal liquid substrate ") of the strip corresponding with a plurality of LCD slab products.And, make probe touch the periphery connecting portion in the region that is equivalent to each LCD slab products after cutting, the inspection of lighting a lamp.This mask is for covering light and the uneven luminance in viewing area or uneven color are detected in the region corresponding with periphery non-display area (frame region) etc.Owing to being the mode of mask of installing like this on light diffusing sheet, so by only changing mask, can easily tackle the change etc. of the size of display panels.
In patent documentation 3, record for detect on glass substrate with flaw etc. and substrate configure up and down polaroid, from below light source irradiate white light, from above observe the technology that sees through light.Utilization through the polaroid of below and the light that becomes linearly polarized light by the character of the scatterings such as flaw, detected.Such inspection is being combined array base palte and counter substrate and is being made after seal sclerosis, in order to detect the flaw that produces etc. when grinding after grinding step, carries out, and particularly in order to judge whether to become the flaw of problem after being, carries out.
Patent documentation 1: JP 2000-066164
Patent documentation 2: JP 2002-107689
Patent documentation 3: JP 2007-263928
In recent years, in order to improve the efficiency of manufacturing and checking, in the region that is equivalent to each LCD slab products, be arranged as under the state of rectangular large stretch of substrate (mother substrate), carry out for the manufacture of a plurality of operations, check that the situation of operation is also more.
Under the state of so large stretch of substrate, can consider not input drive signal or liquid crystal drive voltage etc. and carry out visual examination, for this reason, can consider the substrate at the medium maintenance sheet of Clean room, and by visual or image analysis, detect defect in advance.And requirement can be carried out method and the device of such inspection operation more efficiently.
Utility model content
It is a kind of in the inspection method and testing fixture of display panels that the utility model provides, and can and see through the technology that light easily detects the defect of friction lines etc. by reflected light.
The testing fixture of display panels of the present utility model is characterised in that, comprising: back of the body lamp unit; The 1st polaroid, is disposed at the outgoing plane of above-mentioned back of the body lamp unit; Substrate bears platform, the place ahead devices spaced apart of above-mentioned the 1st polaroid configure, keep display panels; The 2nd polaroid, the more the place ahead of bearing platform and display panels at aforesaid substrate, devices spaced apart and being movably held; And the lamp used of indirect illumination; Substrate bears platform and comprises: rectangular-shaped frame portion; Tabular glazing bar, bears at substrate on the thickness direction of platform and extends; The pipe of adsorption section and absorption use, is installed on above-mentioned glazing bar; And supporting driving mechanism, supporting frame portion, and the pitch angle that can make substrate bear platform suitably changes.
The testing fixture of above-mentioned display panels, is characterized in that, the part that the side forwardly of above-mentioned glazing bar, adsorption section and suction tube is exposed is all colored as black.
The testing fixture of above-mentioned display panels, is characterized in that, the part that the side forwardly of above-mentioned glazing bar, adsorption section and suction tube is exposed has been implemented frosted.
The testing fixture of above-mentioned display panels, is characterized in that, above-mentioned the 1st polaroid consists of a plurality of polaroids, and a plurality of polaroids seam is each other with respect to carrying on the back lamp by shading piece shading.
The testing fixture of above-mentioned display panels, is characterized in that, by supporting driving mechanism, can make substrate bear platform and rotate successively or continuously around the parallel transverse axis of the outgoing plane with back of the body lamp unit.
The testing fixture of above-mentioned display panels, is characterized in that, can make substrate bear platform is being that 0 degree rotates in the scope at the pitch angle of 60 degree from plumbness around the transverse axis parallel with outgoing plane.
The testing fixture of above-mentioned display panels, is characterized in that, by supporting driving mechanism, can carry out to the movement of the direction of the transverse axis vertical with outgoing plane and around the rotation of fore-and-aft direction axle.
The testing fixture of above-mentioned display panels, is characterized in that, possesses operating portion; By utilizing the operation of this operating portion, can between the illumination of the lamp of using based on indirect illumination and the illumination based on back of the body lamp unit, mutually switch; And, by utilizing the operation of this operating portion, can drive supporting driving mechanism and make substrate bear platform rotation.
The testing fixture of above-mentioned display panels, is characterized in that, back of the body lamp unit, the 1st polaroid and substrate bear platform to be configured in shading indoor; The 2nd polaroid is held in is with handled frame, can hold movement by operator.
The testing fixture of above-mentioned display panels, is characterized in that, the front end face in frame portion is provided with slip-off preventing fin via fixed pin in the mode that can rotate; At display panels, be adsorbed onto after substrate bears platform, make slip-off preventing with fin inwardly, thereby keep also can preventing that display panels from coming off in inadequate situation in absorption.
About the defect of friction lines etc., detect and become easier, and within the regulation activity duration, detection efficiency rises.
Accompanying drawing explanation
Fig. 1 is for the schematic diagram as the basic structure of the testing fixture of an embodiment of the present utility model is described.
Fig. 2 is the schematic stereographic map that the structure for the inspecting stand of the testing fixture to as an embodiment of the present utility model describes.
Fig. 3 means the schematic vertical view of having pasted the situation of photo-shield strip in the seam on the outgoing plane of back of the body lamp unit, at polaroid.
Fig. 4 means the schematic stereographic map as the detailed structure of the testing fixture of an embodiment of the present utility model.
Description of reference numerals
1 substrate bears platform; 10 testing fixtures; 11 adsorption cups;
12 absorption flexible pipes; 15 frame portions; 16 vertical glazing bars;
17 lined; 18 slip-off preventing fins; 2 back of the body lamp unit;
21 outgoing planes; 22 cover glass plates; 3 the 1st polaroids;
31 photo-shield strips; 4 the 2nd polaroids; The frame of 41 polaroids;
The handle of the frame of 42 polaroids; 5 display panels; 6 supporting driving mechanisms;
61 hook stick switch portion; 62 device control terminals; 63 result entry terminals;
7 Clean rooms (shading chamber); 71 window portions;
72 reflecting lighting lamps; 73 X eliminators; 74 send into and send mouth;
75 horse blocks; 76 supporting handles; 77 X-directions;
78 Y directions; 8 operators; 9 unit boxes
Embodiment
Use Fig. 1~Fig. 4, to the testing fixture of the display panels as an embodiment of the present utility model and use the inspection method of this testing fixture to describe.Here, the display panels 5 that checks object is the display panels by the counter substrate that is arranged with the array base palte of TFT element and pixel electrode etc. and colour filtering chip basic board etc. is pasted via seal and made seal harden and obtain.; the panel that forms the panel body portion before drive IC, flexible base, board (FPC) are installed, especially for large stretch of panel (mother substrate) with rectangular arrangement by the goods part panel body portion cutting of each LCD slab products, a plurality of.Display panels 5 as such mother substrate is rectangular-shaped, Yi Bian it is at least 400mm.Typically, be for manufacturing efficiently the panel of LCD slab products of the demonstration of carrying out fine of portable phone, smart phone, other portable terminal devices or panel computer etc.For example, be on one side or more than 400dpi fine above for the manufacture of 300dpi LCD slab products, be the mother substrate of the above particularly 800mm of 600mm above, more than for example 1000mm.In addition, the display panels 5 that checks object is preferably enclosed the structure after liquid crystal material.
If use the testing fixture of present embodiment, can efficiency carry out well: the 1st checks operation, make substrate bear the angle change of platform, and the lamp of being used by indirect illumination throws light on, the reflected light based on reflecting from display panels carries out the inspection about defect; And the 2nd check operation, then, based on from back of the body lamp unit through display panels and the 1st and the 2nd polaroid forwards the light that sees through out carry out the inspection about defect.
In the schematic vertical direction cut-open view of Fig. 1, represent the basic structure of testing fixture 10.
Testing fixture 10 comprises that absorption keeps the substrate of the angle of inclination of display panels 5 to bear platform 1, is configured to the back of the body lamp unit 2 of plumbness, is arranged on the 1st polaroid 3 on the outgoing plane 21 of carrying on the back lamp unit 2 and can be held by operator 8 the 2nd polaroid 4 of suitable movement across cover glass plate 22.Here, substrate bears platform 1, the back of the body lamp unit 2 and the 1st polaroid 3 are configured in Clean room (shading chamber) 7.The profile of the Clean room 7 here, casing and purification chamber etc. are same, but desired cleanliness level is less high, in fact play conduct by the effect of " the shading chamber " of the blockings such as undesirable outer light.Operator 8 is observed to be adsorbed by the window portion consisting of transparent panel 71 in the place ahead of Clean room 7 and is held in the display panels 5 that substrate bears platform 1.
On the top of Clean room 7, possesses the reflecting lighting lamp 72 that the display panels 5 for bearing towards substrate on platform 1 throws light on from top.Reflecting lighting lamp 72 is for example the orange lamp of mono-chromatic lamp, particularly sodium vapor lamp etc.On the other hand, at substrate, bear platform 1, possess substrate is born to the position of platform 1, the platform supporting driving mechanism 6 that posture supports changeably.The drive division of platform supporting driving mechanism 6 is such as consisting of step motor or linear motor, harmonic drive, ball-screw etc.
In addition,, before Clean room 7, possess for driving platform supporting driving mechanism 6 substrate is born to the position of platform 1, the hook stick switch portion 61 that posture is controlled.This hook stick switch portion 61 for example consists of hook stick and a plurality of operating switch.
The display panels 5 that checks object bears platform 1 to substrate and transfers by being equipped on mechanical arm on testing fixture or unit box, is adsorbed to be held in this substrate and to bear platform 1.
Then, first carry out checking operation based on the catoptrical the 1st.That is, by reflecting lighting lamp 72 is lit a lamp, and undertaken by operator 8 visualization display panels 5.Now, by platform, supporting driving mechanism 6 makes substrate bear platform 1 around parallel transverse axis (the left and right directions axle of the outgoing plane 21 with back of the body lamp unit; X-axis) for example 0 degree (plumbness) in the scope at the pitch angle of 60 degree successively or rotation (θ X driving) continuously, and based on reflected light by the visual detection of carrying out defect.In addition, in order to confirm interference fringe, by platform, support driving mechanism 6 angle is changed slightly, according to the changing condition of striped, judge.And then, also suitably carry out to transverse axis (the fore-and-aft direction axle vertical with outgoing plane 21; The movement of direction Y-axis) (Y driving) and around the rotation (θ Y driving) of fore-and-aft direction axle (Y-axis).Rotation (θ Y driving) around fore-and-aft direction axle (Y-axis) for example can be carried out in the scope of 15 degree to the scope of 30 degree, particularly 0 degree at 0 degree (state parallel with outgoing plane 21).
The 1st checks that operation is so-called by observing on the whole the operation that promptly detects defect.
Then based on the catoptrical the 1st, check operation, carry out the 2nd inspection operation based on seeing through light.The 2nd, check in operation, make substrate bear platform 1 remain with carry on the back lamp unit outgoing plane 21 almost parallels state (plumbness) or for example 15 degree with the interior state tilting slightly, check.That is, the light that sees through based on by display panels 5 and a pair of polaroid 3,4 and out, is checked by visual by operator 8.Now, operator 8 makes the 2nd polaroid 4 observe in (Y direction and X-direction) upper slip successively up and down.In addition, as required, it is also rotated around fore-and-aft direction axle (Y-axis).Like this, for large stretch of display panels 5, by the big or small region of each regulation, check and have zero defect successively.
The 2nd, check in operation, particularly detect bright line that the disorder due to the orientation of friction lines etc. produces, bright spot etc., or detect the demonstration that the disorder of the local base sheet separation (cell gap) that the existence due to the foreign matter because of between array base palte and counter substrate etc. causes occurs irregular (such as the candy strip of concentric circles etc.).
Then, use Fig. 2, the structure that substrate is born to platform 1 describes.As shown in Figure 2, substrate bear platform 1 comprise rectangular-shaped frame portion 15, at substrate, bear on the thickness direction of platform, extend and platform longitudinally and the tabular glazing bar 16,17 transversely extending respectively, be arranged on the adsorption cup (cup) 11 on the front end face (end face of display panels side) at the position 14 that these glazing bars (Japanese original text: Zhan) 16,17 intersect and be arranged on the front end face of horizontal glazing bar 17 and the flexible pipe for absorption (hose) 12 extending along this glazing bar 17.Absorption is connected with the decompression pipe arrangement in frame portion 15 with an end of flexible pipe 12, and is connected with the root of a plurality of adsorption cups 11.Absorption can be set as with the tabular thickness (width of front end face) of glazing bar 16,17 roughly the same or slightly less or slightly large than them with the external diameter of flexible pipe 12.In addition, absorption except soft pipe (tube), can be also resinousness or metallic hard straight pipe arrangement with flexible pipe 12.In addition, can be also the adsorption cup with the adsorption section of cup-shaped, can be also for example below the columniform parts that formed by elastomeric material, to be arranged with the structure in a plurality of attractions hole.
In a concrete example, the thickness that can make glazing bar 16,17 is 0.5~4mm, is for example 1~2mm, make absorption be 3~6mm, for example be 4~5mm with the external diameter of flexible pipe 12, make front end face being spaced apart than the value of value, the particularly large 50~120mm of the large 30~150mm of external diameter of absorption use flexible pipe 12 to maintained display panels 5 from glazing bar 16,17.Like this, as tabular glazing bar 16,17 and the less glazing bar of used thickness, and use the less flexible pipe 12 for absorption of diameter, and then, the interval of guaranteeing in a way front end face and the display panels 5 of this glazing bar 16,17.If set like this, from back of the body lamp unit 2 penetrates and passed through light the 1st polaroid 3 display panels 5 with the overlapping region of glazing bar 16,17 in also reach the amount of the degree of enough carrying out the inspection based on through light.
Therefore,, except adsorption cup 11 is by adsorbing the region that contacts and cover, can check whole viewing areas of display panels 5.Here, the diameter of adsorption cup 11 is for example 20~50mm, in a concrete example, is 30~40mm.Therefore,, in the display panels 5 of the substrate as large stretch of, the area ratio that becomes difficult region due to viewing area and adsorption cup 11 inspection overlapping and based on seeing through light is very little.
In addition,, if the such substrate of Fig. 2 bears platform 1, the flexible adsorption cup 11 only consisting of resin material etc. touches and is against large stretch of display panels 5 and supports.In addition, form substrate and bear the frame portion 15 of platform 1 and glazing bar 16,17 because the size on the thickness direction at platform 1 is larger, so the possibility of deflection is very little on the thickness direction of platform 1.Therefore, can to display panels 5, not apply local stress and stably support.In a concrete example, the size of the frame portion 15 on the thickness direction of platform 1 is 20~80mm, and the size of the glazing bar 16,17 that the party makes progress is than its little 15~40mm.
On the other hand, the front end face that bears the frame portion 15 of platform 1 at substrate is provided with a plurality of fins 18 for slip-off preventing, the plurality of slip-off preventing with fin 18 for just in case absorption keep also preventing that display panels 5 from coming off in inadequate situation.Particularly, a plurality of fins 18 for slip-off preventing are installed on each limit of the rectangle of frame portion 15.Each slip-off preventing is the tabular of rectangle etc. with fin 18, and fixed pin 19 rotations in the front end face that is embedded in frame portion 15 freely.After display panels 5 is set, slip-off preventing with fin 18 as illustrated by towards inner side.In addition, these slip-off preventing are set to the size of the viewing area that does not reach display panels 5 with fin 18.In addition, slip-off preventing is resin or metal system with fin 18, can on substrate bears the thickness direction of platform 1, have to a certain degree flexible.
In the present embodiment, the dead color that substrate bears that part that platform 1 exposes forwardly when the 2nd checks operation is all colored or application is black etc., or covered by the dark-coloured material of black etc.In addition, carried out frosted application or frosted processes simultaneously.That is, be not only the front end face of glazing bar 16,17 and the front end face of side and frame portion 15 and medial surface and be colored as black by frosted application etc., and adsorption cup 11 and absorption is also colored as black with flexible pipe 12, and surperficially carried out frosted processing.Thereby, prevented when the 1st and the 2nd checks operation, because of reflected light or see through light harmful effect occurs.In addition, black painted can mix by the resin material to silicones etc. black pigment or carry out with Hei Se Tu material application or with the coloured film covering of black etc.In addition, frosted can Tong Guo be added silica microparticle etc. and is carried out in Tu material or resin material.
In addition, about glazing bar 16,17 and the adsorption section being formed by adsorption cup 11 etc. and the adsorption tube that formed with flexible pipe 12 etc. by absorption, as long as be black by the integral colouring of the part that side is exposed forwardly, just can substantially prevent from because of reflected light or see through light harmful effect occurs.But, if implement again frosted to exposing the roughly integral body of the part that front side exposes like this, can further avert evil influence.
Particularly, when the 2nd checks operation, can prevent that from back of the body lamp unit 2, by the polarized light of the 1st polaroid 3 incidents, seeing through absorption becomes the light of polarization disorder with flexible pipe 12 and adsorption cup 11.The light of polarization disorder produces the highlights of bright line or bright spot etc. when checking like this, makes the detection of defect become difficulty.Under the relation of the relation of the polarization direction of the 1st polaroid 3 and the polarization direction of the 2nd polaroid 4 or the orientation of the liquid crystal material in these polarization directions and display panels 5 etc., in normal situation, be in the sight of black, because of the disorder of polarization, occur with the luminous part of iris such highlights.
Then, use Fig. 3, the shading of the seam of polaroid is described.Size is larger corresponding to the display panels 5 of the mother substrate as large stretch of for the outgoing plane 21 of back of the body lamp unit 2.For example, display panels 5 is of a size of 1300mm * 1500mm.But the size of polaroid is on the market very little in contrast.Therefore, paste a plurality of polaroids.In illustrated example, paste 6 polaroid 3-1~3-6.In these polaroids seam each other, even without gap, polarization also can be disorderly.So, at this seam crossing, paste the narrower photo-shield strip 31 of width.Photo-shield strip 31 is on the one side of the resin strip of the dead colors such as black, to possess the splicing tape of adhesive linkage, and width can be set as for example 2~5mm.
In Fig. 3, also using display panels 5 as breaking portion, schematically illustrate.In this part, manifest and have the defect of linear 51, be positioned at the position approaching with polaroid seam each other.But, because seam is by photo-shield strip 31 shadings, so when by seeing through light and check after polarization, do not occur, from highlights seam, that formed by the light of polarization disorder, effectively carrying out the detection operation of defect so can not be subject to the obstruction of such highlights.
The concrete structure example that represents testing fixture 10 in Fig. 4.In an illustrated concrete example, on the wall of the left of Clean room 7, be provided with to send into and send mouthfuls 74, when the sending into and send of display panels 5, send into and send mouthfuls 74 door and opened.In illustrated example, a plurality of display panels 5 are accommodated in unit box 9, are transported into send into send mouthful 74 places, and the not shown mechanical arm being possessed by testing fixture 10 carries out and substrate bears the handing-over between platform 1.Unit box 9 is containers that many display panels 5 are kept and can be taken in multilayer with level, conventionally side can be opened and closed partly.In addition, in illustrated example, possesses castor (caster).
In Clean room 7 inside, close to send into send mouthful 74 parts above, possess X eliminator (electrostatic removal device) 73, when the sending into of display panels 5 and while sending, by making surrounding air ionization, carry out removing of static.In illustrated example, X eliminator 73 is that level is bar-shaped, and a plurality of blow-off outlets below it are by the Air blowing ionization.
In the example shown in Fig. 4, in the left portion above of testing fixture 10, possess and can carry out to the operation condition of testing fixture 10 etc. the device control terminal 62 of various changes, setting.This terminal is touch panel in illustrated example.On the other hand, the right-hand portion above at testing fixture 10 possesses the result entry terminal 63 for input checking result.This result entry terminal 63 is for example the notebook computer that possesses keyboard and display, by administering the computer network of the manufacturing process of LCD slab products, is connected to server.
In addition, in the example shown in Fig. 4, in the front lower of testing fixture 10, possesses horse block 75, near the central portion of the lower end of window portion 71 and move than the mediad left avertence of window portion 71 handle 76 for supporting that part possesses arcuation.These supportings with handle 76 in the situation that operator 8 wants face to observe to checking that object place is close for supporting health.On the other hand, in the example shown in Fig. 4, the 2nd polaroid 4 is maintained in rectangular-shaped frame 41, from the mediad outside on one side of this frame 41, is extruded with bar-shaped handle 42.
Below, to using operation and simple to operate the concrete example that illustrates of inspection of the testing fixture 10 of Fig. 4.
First, the new display panels 5 that checks object is set up and adsorbs and is held in substrate and bears platform 1.During contact button that this action case waits as started in operator 8 use device control terminal 62 operation inspections, carry out.And in the moment that is adsorbed maintenance, reflecting lighting lamp 72 is lit a lamp.In illustrated example, reflecting lighting lamp 72 is provided with pair of right and left at the upper end of window portion 71, above nearby, towards inboard below, carries out slightly obliquely the irradiation of illumination light.
Operator 8 is when carrying out whole visual examination, from horse block 75, operate the platform driving rod of certain hook stick switch portion 61 of left and right, thereby for substrate, bear platform 1 and display panels 5, make around the pitch angle of left and right directions axle (X-axis) and suitably change around the pitch angle of fore-and-aft direction axle (Y-axis).Now, make as required fore-and-aft direction position also suitably change.And, if found defect,, about the position of defect, size, kind etc., from result entry terminal 63, input.
Then, by the platform driving rod to hook stick switch portion 61, operate, substrate is born to platform 1 and display panels 5 is generally perpendicularly erect.And, the illumination change-over switch of hook stick switch portion 61 is operated, from the illumination of reflecting lighting lamp 72, switch to the illumination of back of the body lamp unit 2.If illumination is switched, upper the 2nd polaroid 4 of operator 8 cover, for example, press the big or small region of each and the 2nd polaroid 4 same degree, carries out the visual examination for detection of defect.The 2nd polaroid 4 is for example the size of A5 size~A3 size.Like this, owing to being that operator 8 use hands hold the 2nd polaroid 4 modes, so can make polaroid 4 suitably observe around clockwise or be rotated counterclockwise from operator, adjust the degree of polaroid 3,4 intersection each other.
If found defect, same with situation about checking by indirect illumination, about the position of defect, size, kind etc., from result entry terminal 63, input.By administering computing machine or the network of manufacturing process, each display panels main part that is equivalent to be found fault location is removed and abandoned after cutting from manufacturing process.
If check finished, for example operation of the contact-making switch by device control terminal 62, driving device arm, sends back to large stretch of display panels 5 at the regulation place of unit box 9.
According to above-mentioned embodiment, when using a pair of polaroid and backlight device to carry out when seeing through the visual examination of light under the non-state of lighting a lamp, the distance of each polaroid and display panels is normally more than 30mm, particularly more than 100mm, more than 150mm, for example, be more than 200mm typically.
First, due to the polaroid of rear side and back of the body lamp and the display panels that checks object devices spaced apart fully, so can make the impact of the shading that brings because of the supporting construction thing between it become Min..Particularly, due to any one devices spaced apart all for supporting the tabular glazing bar 16,17 extending along incident direction of display panels 5 and the polaroid 3 of display panels and rear side etc., so the shading of the back of the body light being brought by belfry thing is unquestioned level, only at adsorption cup place by shading.Interval from the belfry thing of glazing bar etc. to display panels 5 and from the belfry thing of glazing bar etc. to back of the body lamp the interval of polaroid can be made as for example more than 50mm, particularly more than 100mm.
In addition,, about the 2nd polaroid 4 of operator's side, by making it from display panels 5 devices spaced apart, the polaroid 4 that operator can cover the size less than display panels 5 carries out visual examination to the Zone Full of display panels 5.Now, even if do not make polaroid 4 move, also can check the larger region of polaroid 4.And, because polaroid 4 is less and not do not contact with display panels 5 etc., so be not only upper and lower to the left and right movement, can also observe around clockwise and also carry out rapidly and simply around slightly subconvolute operation counterclockwise from operator.
In devices spaced apart this point as described above, can think that the inspection method of present embodiment and testing fixture are all different significantly from any inspection method and the testing fixture of above-mentioned patent documentation 1~3.
In the explanation of above-mentioned embodiment, suppose only to carry out non-visual examination of lighting a lamp and be illustrated, but according to circumstances, can be also input liquid crystal drive voltage or drive the signal inspection of lighting a lamp.For example, if which region corresponding with LCD slab products all contacts with the periphery of mother substrate, can think and can drive input and the inspection of lighting a lamp from this peripheral part.
In the explanation of above-mentioned embodiment, suppose to check all by the visual of operator, to be illustrated, but also can, to part or all, use video camera and image analysis apparatus to check.In the case, check result is sent by network automatically.
In addition, about the 2nd polaroid 4, suppose to remain on be with on handled frame 41, operator 8 holds mobile and is illustrated, but also can be configured in Clean room as circular fan, by the operation of hook stick, can be shifted, adjust to position and around the posture of fore-and-aft direction axle.
In addition, in the explanation of above-mentioned embodiment, suppose then based on catoptrical the 1st inspection operation, to carry out being illustrated based on seeing through the 2nd inspection operation of light, but the 1st and the 2nd checks that the order of operation also can be contrary.

Claims (10)

1. a testing fixture for display panels, is characterized in that, comprising:
Back of the body lamp unit (2);
The 1st polaroid (3), is disposed at the outgoing plane (21) of above-mentioned back of the body lamp unit (2);
Substrate bears platform (1), in the configuration of the place ahead of above-mentioned the 1st polaroid (3) devices spaced apart ground, keeps display panels (5);
The 2nd polaroid (4), the more the place ahead of bearing platform (1) and display panels (5) at aforesaid substrate, devices spaced apart and being movably held; And
The lamp that indirect illumination is used (72);
Substrate bears platform (1) and comprising:
Rectangular-shaped frame portion (15);
Tabular glazing bar (16,17), bears at substrate on the thickness direction of platform and extends;
Adsorption section (11) and suction tube (12), be installed on above-mentioned glazing bar (16,17); And
Supporting driving mechanism (6), supporting frame portion (15), and can make substrate bear the tilt angle varied of platform (1).
2. the testing fixture of display panels as claimed in claim 1, is characterized in that,
The part that the side forwardly of above-mentioned glazing bar (16,17), adsorption section (11) and suction tube (12) is exposed is all colored as black.
3. the testing fixture of display panels as claimed in claim 2, is characterized in that,
The part that the side forwardly of above-mentioned glazing bar (16,17), adsorption section (11) and suction tube (12) is exposed has been implemented frosted.
4. the testing fixture of display panels as claimed in claim 1, is characterized in that,
Above-mentioned the 1st polaroid (3) by a plurality of polaroids (3-1,3-2 ... 3-6) form, a plurality of polaroids seam is each other with respect to carrying on the back lamp by shading piece (31) shading.
5. the testing fixture of the display panels as described in any one in claim 1~4, is characterized in that,
By supporting driving mechanism (6), can make substrate bear platform (1) and rotate successively or continuously around the parallel transverse axis of the outgoing plane (21) with back of the body lamp unit (2).
6. the testing fixture of display panels as claimed in claim 5, is characterized in that,
Can make substrate bear platform (1) is being that 0 degree rotates in the scope at the pitch angle of 60 degree from plumbness around the transverse axis parallel with outgoing plane (21).
7. the testing fixture of display panels as claimed in claim 5, is characterized in that,
By supporting driving mechanism (6), can carry out to the movement of the direction of the transverse axis vertical with outgoing plane (21) and around the rotation of fore-and-aft direction axle.
8. the testing fixture of display panels as claimed in claim 5, is characterized in that,
Possesses operating portion (61);
By utilizing the operation of this operating portion (61), can between the illumination of the lamp of using based on indirect illumination (72) and the illumination based on back of the body lamp unit (2), mutually switch;
And, by utilizing the operation of this operating portion (61), can drive supporting driving mechanism (6) and make substrate bear platform (1) rotation.
9. the testing fixture of display panels as claimed in claim 5, is characterized in that,
Back of the body lamp unit (2), the 1st polaroid (3) and substrate bear platform (1) and are configured in shading chamber (7);
The 2nd polaroid (4) is held in is with handled frame (41), can hold movement by operator (8).
10. the testing fixture of display panels as claimed in claim 5, is characterized in that,
Front end face in frame portion (15), is provided with fin for slip-off preventing (18) via fixed pin (19) in the mode that can rotate;
At display panels (5), be adsorbed onto substrate and bear platform (1) afterwards, make fin for slip-off preventing (18) inwardly, thereby keep also can preventing that display panels (5) from coming off in inadequate situation in absorption.
CN201420272124.0U 2013-06-25 2014-05-26 The testing fixture of display panels Active CN203950092U (en)

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CN106198570A (en) * 2016-08-15 2016-12-07 武汉华星光电技术有限公司 A kind of substrate detection apparatus
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CN104637427A (en) * 2015-03-12 2015-05-20 合肥京东方光电科技有限公司 Detection jig
CN104637427B (en) * 2015-03-12 2017-05-24 合肥京东方光电科技有限公司 Detection jig
CN106198570A (en) * 2016-08-15 2016-12-07 武汉华星光电技术有限公司 A kind of substrate detection apparatus
CN106198570B (en) * 2016-08-15 2019-02-22 武汉华星光电技术有限公司 A kind of substrate detection apparatus
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