CN204347378U - Test Fixture - Google Patents
Test Fixture Download PDFInfo
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- CN204347378U CN204347378U CN201420815047.9U CN201420815047U CN204347378U CN 204347378 U CN204347378 U CN 204347378U CN 201420815047 U CN201420815047 U CN 201420815047U CN 204347378 U CN204347378 U CN 204347378U
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- cover plate
- fastening cover
- iron pin
- display panel
- switch
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- 238000012360 testing method Methods 0.000 title abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 69
- 239000000523 sample Substances 0.000 claims abstract description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 108
- 238000005259 measurement Methods 0.000 claims description 55
- 229910052742 iron Inorganic materials 0.000 claims description 54
- 239000011521 glass Substances 0.000 claims description 13
- 230000008676 import Effects 0.000 claims 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 230000010287 polarization Effects 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
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Abstract
The utility model discloses a test fixture, include: the device comprises a carrying substrate, a buckling cover plate, a plurality of probes and an electric control lock, wherein the carrying substrate and the buckling cover plate are arranged oppositely, the probes are positioned on the buckling cover plate, and the electric control lock and the probes are connected with a power supply; when the carrying substrate and the buckling cover plate are closed and the power supply is electrified, the electric control lock is locked, the carrying substrate and the buckling cover plate are buckled, and the probe of the buckling cover plate discharges electricity; when the power supply is not electrified, the electric control lock is unlocked, the carrying substrate can be separated from the buckling cover plate, and the probe of the buckling cover plate is powered off. Adopt this test fixture, can guarantee when carrying thing base plate and lock apron lock and circular telegram, the electric control lock locks simultaneously, and only when test fixture outage, the electric control lock just can unblock, and at the in-process of electric control lock unblock, remaining electric charge in the display panel can pass through the leading-in ground end of the probe on the lock apron, just so solved because the electric charge that opens the accumulated in the liquid crystal capacitance that the buckle arouses under the circumstances of not turning off the power can not release, and the shutdown ghost that finally leads to and liquid crystal polarization scheduling problem.
Description
Technical field
The utility model relates to measurement jig, particularly a kind of measurement jig being integrated with automatically controlled lockmaking.
Background technology
In prior art, the test of the display image of display panels is mainly realized by liquid crystal panel measurement jig, concrete, be to be contacted with the test point contraposition on display panel by the probe on measurement jig to test.General, measurement jig comprises mainboard and cover plate, and probe is positioned on cover plate, when operator will test display panels, can be first positioned on mainboard by display panels, then cover plate and mainboard are snapped together and be energized carries out electrical measurement; After test terminates, general, should first power cutoff, then open buckle and take out display panels.
But due to reasons such as misoperations, often exist and just do not open buckle when there is no power cutoff, in this case, probe, not in test point, makes the unexpected power-off of display panels, and does not have discharge path, the electric charge accumulated in liquid crystal capacitance is caused not discharge immediately, instantaneously picture still can remain the image before a part, cause power-off ghost shadow problem, electric charge can not discharge serious meeting for a long time and cause liquid crystal polarization.
Utility model content
For problems of the prior art, the utility model embodiment provides a kind of measurement jig, comprising: the loading substrate be oppositely arranged and fastening cover plate, be positioned at the multiple probes on described fastening cover plate, and automatically controlled lockmaking, described automatically controlled lockmaking and described probe access power supply; When described loading substrate and described fastening cover plate cover and described power supply is energized, lock is locked in described electric control, described loading substrate and described fastening cover plate is fastened, and the electric discharge of the probe of described fastening cover plate; When described power supply is not energized, described automatically controlled lockmaking unlocks, and described loading substrate can separate with described fastening cover plate, and the probe power-off of described fastening cover plate.
Adopt measurement jig of the present utility model, can ensure when loading substrate fastens with fastening cover plate and is energized, automatically controlled lockmaking is locked simultaneously, and only have when measurement jig power-off, automatically controlled lockmaking could unlock, and in the process unlocked in automatically controlled lockmaking, residual charge in display panel leads ground end by the probe fastened on cover plate, this addresses the problem the electric charge accumulated in the liquid crystal capacitance owing to opening when not having power cutoff caused by buckle can not discharge, and the problem such as the power-off ghost shadow finally caused and liquid crystal polarization.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of measurement jig structural drawing that the utility model embodiment provides;
Fig. 2 is the automatically controlled lockmaking cut-open view of one that the utility model embodiment provides;
Fig. 3 is the cut-open view along line of cut AA ' in Fig. 2;
Fig. 4 is the another kind of measurement jig structural drawing that the utility model embodiment provides;
Fig. 5 is the side view of measurement jig under buckling state that the utility model embodiment provides;
Fig. 6 is the side view of measurement jig under uncovered state that the utility model embodiment provides;
Fig. 7 is the automatically controlled lockmaking cut-open view of another kind that the utility model embodiment provides;
Fig. 8 is the cut-open view along line of cut BB ' in Fig. 7;
Fig. 9 is the cut-open view along line of cut CC ' in Fig. 7.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Figure 1 shows that the utility model embodiment provides a kind of measurement jig 1, it comprises: the loading substrate 101 be oppositely arranged and fastening cover plate 103, the multiple probes 105 be positioned on fastening cover plate 103, and automatically controlled lockmaking 107, wherein, automatically controlled lockmaking 107 accesses power supply (not providing in figure) with probe 105; When 101 loading substrates and fastening cover plate 103 cover and power supply is energized, automatically controlled lockmaking 107 is locked, and loading substrate 101 and fastening cover plate 103 are fastened, and the probe 105 fastening cover plate 103 discharges, electric current transfers to display panel by probe 105, display panel display frame; When power supply is not energized, automatically controlled lockmaking 107 unlocks, and loading substrate 101 can separate with fastening cover plate 103, and fastens probe 105 power-off of cover plate 103.
Concrete, in the measurement jig 1 shown in Fig. 1, loading substrate 101 also comprises the supporting region 109 placing display panel 3, wherein, display panel 3 comprises multiple terminal 111, when display panel 3 is positioned on supporting region 109, multiple terminals 111 of display panel 3 are corresponding with multiple probes 105 position fastened on cover plate 103.Wherein, part probe 105 connects ground end (not providing in figure), when supporting region 109 places display panel 3, loading substrate 101 with fasten cover plate 103 fasten and power supply is energized time, the multiple probes 105 fastened on cover plate 103 are electrically connected with multiple terminals 111 of display panel 3, display panel 3 display frame; When power supply is not energized, display panel 3 not display frame, and the electric charge on display panel 3 will lead ground end by part probe 105.
Concrete, in the measurement jig 1 shown in Fig. 1, fasten cover plate 103 also to comprise on clear glass 113 clear glass 113 and generally post polaroid (not providing in figure), when fastening cover plate 103 and fastening with loading substrate 101, object carrying area 109 can be seen by clear glass 113, namely, when display panel 3 is positioned on object carrying area 109, when fastening cover plate 103 to be fastened on loading substrate 101 and to be energized, can be known and the complete display frame seeing display panel 3 by the clear glass 113 fastened on cover plate 103.It should be noted that, the shape of clear glass 113 is also not limited to figure given in Fig. 1, can have any shape, as long as ensure in the process of being tested display panel by measurement jig, the image of whole display panel can be observed by clear glass 113, therefore, the distortion of other any situation repeats no more herein, and is all included in scope of the present utility model.
Concrete, in the measurement jig 1 shown in Fig. 1, also comprise power-on switch 115 and cut-off switch 117, except power-on switch 115 and cut-off switch 117, generally also comprise image switching switch (not providing in figure), be just described with power-on switch 115 and cut-off switch 117 in the utility model embodiment.Concrete, power-on switch 115 and cut-off switch 117 access power supply (not providing in figure) respectively, and control energising and the power-off of power supply; When opening power-on switch 115, display panel 3 display frame, automatically controlled lockmaking 107 is simultaneously locked, and loading substrate 101 and fastening cover plate 103 are fixed on buckling state; When opening cut-off switch 117, display panel 3 not display frame, automatically controlled lockmaking 107 simultaneously unlocks.It should be noted that, have to be not limited in the embodiment shown in Fig. 1 about the power-on switch 115 of measurement jig 1 and cut-off switch 117 and like that only there is a power-on switch 115 and a cut-off switch 117, also multiple power-on switch 115 and multiple cut-off switch 117 can be had, or only have a switch (not only to have powering-on function but also have power down function, concrete can realize controlling the energising of whole measurement jig and power-off according to special design) etc. various situation, as long as ensure to realize controlling the energising of measurement jig and power-off by switch, the distortion of other various situation, repeat no more herein, all be included in scope of the present utility model.
Next, be described in detail for the concrete structure of automatically controlled lockmaking and principle of work.First, with reference to Fig. 2, be the cut-open view structural drawing of a kind of automatically controlled lockmaking 107 that the utility model embodiment provides, Fig. 3 is the cut-open view along AA ' line of cut in Fig. 2.Wherein, automatically controlled lockmaking 107 comprises the Part I 1071 be fixed on loading substrate 101 and the Part II 1072 be fixed on fastening cover plate.Part I 1071 comprises: shell 121, shell can need according to different designs to select different materials, insulating material or non-insulating material can, simultaneously, the shape of shell is also not limited to square shape given in Fig. 2 and Fig. 3, can make arbitrary shape, such as circle, triangle, polygon etc. according to different needs, the distortion of other any situation can, do not repeat them here.Shell 121 inside comprises: the first coil 123, second coil 125 and spring 127, and is positioned at the iron pin 129 of shell 121 inside at least partly.Wherein, the first coil 123 is wound around iron pin 129 at least partly, and accesses power-on switch 115 (not providing in figure); Second coil 125 also can be wound around iron pin 129 and the first coil 123 at least partly, or be not wound around iron pin 129 and the first coil 123, but the bearing of trend of the second coil 125 and the bearing of trend of iron pin 129 are all vertical with the bottom surface 131 of described shell 121, and, the projection of iron pin 129 in the vertical direction of bottom surface 131 is positioned among the projection of the second coil 125 in the vertical direction of bottom surface 131 (see Fig. 3), and the second coil 125 accesses described power-on switch 115 (not providing in figure).It should be noted that, the coil shape of the first coil 123 and the second coil 125, number of turns, other factors such as the flow direction of electrical current and the size of electric current can set arbitrarily according to the actual conditions of automatically controlled lockmaking, and the scheme be not limited to given by Fig. 2 and Fig. 3, as long as ensure: when unlatching power-on switch 115, when first coil 123 and the second coil 125 start to be energized, according to electromagnetic induction principle, the power mutually repelled can be produced between the first coil 123 and the second coil 125, and the size of repulsive force should guarantee iron pin 129 to release, the direction that iron pin 129 is released is the bearing of trend of iron pin 129 stem 1292, and the distance released can ensure that the stem 1292 of at least part of iron pin 129 is stuck in the draw-in groove 133 of the Part II 1072 of automatically controlled lockmaking 107, namely ensure that automatically controlled lockmaking 107 is locked, as for the distortion of other arbitrary situation, repeat no more herein, all be included in scope of the present utility model.。
The first end 1271 of spring 127 is fixed on the side towards iron pin 129 of the bottom surface 131 of shell 121, and the second end 1272 is fixed on the afterbody 1291 of iron pin 129.When not opening power-on switch 115, spring 127 is in equilibrium state; After unlatching power-on switch 115, along with iron pin 129 is released by the direction along iron pin 129 stem 1292, the equilibrium state of spring 127 is broken, and remain on the state be stretched always, until when cut-off switch 117 is opened, produce the power mutually repelled between first coil 123 and the second coil 125 to disappear, spring 127 is in order to recover initial equilibrium conditions, the bearing of trend of iron pin 129 along himself afterbody 1291 is retracted, position when final spring 129 and iron pin 129 all remain on initial energising and state.It should be noted that, the shape of spring 127, length and the number of turns are also not limited in Fig. 2 given such, can arrange arbitrarily as required, as long as ensure after cut-off switch 117 is opened, the stem 1292 of iron pin 129 can be pulled out from draw-in groove 133, allow Part I and Part II separately, namely reach the object that automatically controlled lockmaking 107 unlocks, the distortion of other any situation does not repeat them here, and is all included in scope of the present utility model.。
Part II 1072 comprises draw-in groove 133, the mating shapes of the shape of draw-in groove 133 and the stem 1292 of iron pin 129, concrete, the shape of draw-in groove 133 and the shape of iron pin 129 stem 1292 to be also not limited in Fig. 2 and Fig. 3 given such, can set arbitrarily, as long as ensure when loading substrate 101 snaps together with fastening cover plate 103 and opens when power-on switch 115, the stem 1292 of at least part of iron pin 129 can be positioned at draw-in groove 133, namely the object that automatically controlled lockmaking 107 is locked is reached, the distortion of other any situation does not repeat them here, all be included in scope of the present utility model.。
It should be noted that simultaneously, the Part I 1071 of automatically controlled lockmaking 107 and the particular location of Part II 1072 to be not limited in Fig. 1 given such, such as, the while that Part I 1071 also can being positioned on fastening cover plate 103, Part II 1072 is positioned on loading substrate 101; Same, Part I 1071 and Part II 1072 also can be positioned at any position of whole measurement jig and be not only the edge being only positioned at measurement jig shown in Fig. 1, as long as ensure: Part I 1071 and Part II 1072 lay respectively at loading substrate 101 and fasten on cover plate 103, and both are oppositely arranged, when loading substrate 101 is with when fastening the relative fastening of cover plate 103 and measurement jig is energized, the pin of iron at least partially 129 in Part I 1071 can be stuck in the draw-in groove 133 of Part II 1072, and electric control is locked.
By adopting the measurement jig shown in Fig. 2, can ensure when loading substrate fastens with fastening cover plate and is energized, automatically controlled lockmaking can be locked simultaneously, and only have when measurement jig power-off, automatically controlled lockmaking can unlock, then just fastening cover plate can be opened, change display panel next to be measured, and when measurement jig power-off, namely in the process that automatically controlled lockmaking unlocks, residual charge in display panel can lead ground end by the probe fastened on cover plate, this addresses the problem owing to just opening buckle when there is no power cutoff, the electric charge accumulated in caused liquid crystal capacitance can not discharge, and finally cause the problem such as power-off ghost shadow and liquid crystal polarization.
Figure 4 shows that the structural drawing of the another kind of measurement jig 2 that the utility model embodiment provides, comprising: the loading substrate 201 be oppositely arranged and the multiple probes 205 fastened on cover plate 203, fastening cover plate 203 and automatically controlled lockmaking 207.Wherein, automatically controlled lockmaking 207 accesses power supply (not providing in figure) with probe 205.When 201 loading substrates and fastening cover plate 203 cover and power supply is energized, automatically controlled lockmaking 207 is locked, and loading substrate 201 and fastening cover plate 203 are fastened, and the probe 205 fastening cover plate 203 discharges simultaneously, electric current transfers to display panel by probe 205, display panel display frame; When power supply is not energized, automatically controlled lockmaking 207 unlocks, and loading substrate 201 can separate with fastening cover plate 203, and fastens probe 205 power-off of cover plate 203.
Concrete, in the measurement jig 2 shown in Fig. 4, loading substrate 201 also comprises the supporting region 209 placing display panel 5, wherein, display panel 5 comprises multiple terminal 211, when display panel 5 is positioned on supporting region 209, multiple terminals 211 of display panel 5 are corresponding with multiple probes 205 position fastened on cover plate 203.Wherein, part probe 205 connects ground end (not providing in figure), when supporting region 209 places display panel 5, loading substrate 201 with fasten cover plate 203 fasten and power supply is energized time, the multiple probes 205 fastened on cover plate 203 are electrically connected with multiple terminals 211 of display panel 5, electric current transfers to display panel 5 by probe 205, display panel 5 display frame; When power supply is not energized, display panel 5 not display frame, and the electric charge on display panel 5 will lead ground end by part probe 211.
Concrete, in the measurement jig 2 shown in Fig. 4, fasten cover plate 203 and also comprise clear glass 213, when fastening cover plate 203 and fastening with loading substrate 201, object carrying area 209 can be seen, that is, when being positioned on object carrying area 209 by display panel 5 by clear glass 213, when fastening cover plate 203 to be fastened on loading substrate 201 and to be energized, can be known and the complete display frame seeing display panel 5 by the clear glass 213 fastened on cover plate 203.It should be noted that, the shape of clear glass 213 is also not limited in Fig. 4 given such, can have any shape, as long as ensure in the process of being tested display panel by measurement jig, the image of whole display panel can be observed by clear glass 213, the distortion of other any situation, repeats no more herein, is all included in scope of the present utility model.。
Concrete, in the measurement jig 2 shown in Fig. 4, also comprise power-on switch 215 and cut-off switch 217, power-on switch 215 and cut-off switch 217 access power supply (not providing in figure) respectively, and control energising and the power-off of power supply; When opening power-on switch 215, display panel 5 display frame, automatically controlled lockmaking 207 is simultaneously locked, and loading substrate 201 and fastening cover plate 203 are fixed on buckling state; When opening cut-off switch 217, display panel 5 not display frame, automatically controlled lockmaking 207 simultaneously unlocks.It should be noted that, have to be not limited in the embodiment shown in Fig. 4 about power-on switch 215 and cut-off switch 217 and like that only there is a power-on switch 215 and a cut-off switch 217, also multiple power-on switch 215 and multiple cut-off switch 217 can be had, or only have a switch (not only to have powering-on function but also have power down function, concrete can realize controlling the energising of whole measurement jig and power-off according to special design) etc. various situation, as long as ensure to realize controlling the energising of measurement jig and power-off by switch, the distortion of other various situation, repeat no more herein.
Figure 5 shows that the side view of measurement jig 2 under buckling state that the utility model embodiment provides, Figure 6 shows that the side view of measurement jig 2 under uncovered state that the utility model embodiment provides, can see that automatically controlled lockmaking 207 is fixed on loading substrate 201 and is deviated from the side of fastening cover plate 203 by Fig. 5 and Fig. 6.
Next, be described in detail for the concrete structure of automatically controlled lockmaking 207 and principle of work.Figure 7 shows that the structural drawing of a kind of automatically controlled lockmaking 207 that the utility model embodiment provides, comprise: shell 221, shell can need according to different designs to select different materials, insulating material or non-insulating material can, simultaneously, the shape of shell is also not limited to square shape given in Fig. 2 and Fig. 3, arbitrary shape can be made according to different needs, such as circle, triangle, polygon etc., the distortion of other any situation can, do not repeat them here, be all included in scope of the present utility model.。
Shell 221 inside comprises tertiary coil 223, and tertiary coil 223 accesses power supply (not providing in figure), the iron pin 227 also comprised in shell 221, and tertiary coil 223 at least can be wound around part iron pin 227 also can not be wound around iron pin 227; The bearing of trend of tertiary coil 223 and the bearing of trend of iron pin 227 are all vertical with the bottom surface 231 of shell 221, the projection of iron pin 227 in the vertical direction of bottom surface 231 is positioned among the projection of tertiary coil 223 in the vertical direction of bottom surface 231, concrete, can see Fig. 8, for the cut-open view along line of cut BB ' in Fig. 7, and tertiary coil 223 accesses power-on switch (not providing in figure).Also comprise clamp 229, the first end 2291 of clamp 229 is fixed on the stem 2271 of iron pin 227, and when automatically controlled lockmaking 207 be positioned at loading substrate 201 deviate from fasten cover plate 203 side time, clamp 229 extends towards away from loading substrate 201, the close direction fastening cover plate, (same, when automatically controlled lockmaking 207 be positioned at fasten cover plate 203 deviate from loading substrate 201 side time, clamp 229 towards away from fastening cover plate 201, extend near the direction of loading substrate) and, the second end 2292 of clamp 229 has kink 2293.When unlatching power-on switch 215, when tertiary coil 223 starts to be energized, according to electromagnetic induction principle, magnetic field force can be produced at the two ends of tertiary coil 223, in such cases, because iron pin 227 self two ends in the longitudinal direction have different magnetic, in energising situation, iron pin 227 can be attracted to more near the position of tertiary coil 223 by tertiary coil 223, and the clamp 229 namely linked together with iron pin 227 can when automatically controlled lockmaking 2 is energized towards the direction displacement of shell 221 bottom surface 231.Therefore, when loading substrate 201 and fastening cover plate 203 snap together, and when power-on switch 215 is opened, the kink 2293 of clamp 229 drops on the side away from described loading substrate 201 (or dropping on the side away from fastening cover plate 203 of loading substrate 201) fastening cover plate 203, make loading substrate 201 be fixed on buckling state with fastening cover plate 203, namely automatically controlled lockmaking 207 is locked.
It should be noted that, the coil shape of tertiary coil 223, number of turns, other factors such as the flow direction of electrical current and the size of electric current can set arbitrarily according to the actual conditions of automatically controlled lockmaking, and be not limited to given by Fig. 7, as long as ensure: when unlatching power-on switch 215, clamp 229 can when automatically controlled lockmaking 2 is energized towards the direction displacement of shell 221 bottom surface 231, and the distance of displacement can make the kink 2293 on clamp 229 that fastening cover plate 203 and loading substrate 201 are fixed on buckling state, namely ensure that automatically controlled lockmaking 207 is locked, as for the distortion of other arbitrary situation, repeat no more herein, all be included in scope of the present utility model.
Iron pin 227 also comprises lattice catch 233, the bearing of trend of lattice catch 233 is vertical with the bearing of trend of iron pin 227, and the projection of iron pin 227 in the vertical direction of bottom surface 231 is positioned among the projection of lattice catch 233 in the vertical direction of bottom surface 231, concrete, can, see Fig. 9, be the cut-open view along line of cut CC ' in Fig. 7.Between lattice catch 233 and the end face 232 of shell 221, be provided with spring 235, the projection of iron pin 227 in the vertical direction of bottom surface 231 is positioned among the projection of spring 235 in the vertical direction of bottom surface 231.The effect of lattice catch 233 be spring 235 is clipped in lattice catch 233 and shell 221 end face 232 between, when automatically controlled lockmaking 2 is energized, magnetic field force is produced because tertiary coil 223 is energized, iron pin 227 is attracted to more near the position of tertiary coil 223, in such cases, spring 235 compresses by lattice catch 233, until automatically controlled lockmaking 2 power-off, attractive force between iron pin 227 and tertiary coil 223 disappears, spring 235 is in order to recover initial gentle state, iron pin 227 will be pushed back to initial position, namely clamp 229 is by towards the position, position away from tertiary coil 223, and finally get back to initial position, automatically controlled lockmaking 207 unlocks.
It should be noted that, automatically controlled lockmaking 207 can deviate from the side of fastening cover plate 203 unlike the loading substrate 201 that is positioned at given in Fig. 5 and Fig. 6, can also be positioned at fastening cover plate 203 deviates from the side of loading substrate 201, and the particular location of automatically controlled lockmaking 207 also not only can be confined to the edge being positioned at loading substrate 201 or fastening cover plate 203 shown in Fig. 5 and Fig. 6, the optional position that also can be positioned at loading substrate 201 or fasten among cover plate 203, such as, when automatically controlled lockmaking 207 is positioned at loading substrate 201 or fasten the optional position among cover plate 203, at loading substrate 201 or a making through hole among cover plate can be fastened, the clamp 229 of automatically controlled lockmaking can run through whole loading substrate 201 by this through hole or fasten cover plate, as long as can ensure when automatically controlled lockmaking 207 is energized, loading substrate 201 and fastening cover plate 203 can be fixed on buckling state, the distortion of other concrete arbitrary situation, repeat no more herein, all be included in scope of the present utility model.。
By adopting the measurement jig shown in Fig. 4, can ensure when loading substrate fastens with fastening cover plate and is energized, automatically controlled lockmaking can be locked simultaneously, and only have when measurement jig power-off, automatically controlled lockmaking can unlock, then just fastening cover plate can be opened, change display panel next to be measured, and when measurement jig power-off, namely in the process that automatically controlled lockmaking unlocks, residual charge in display panel can lead ground end by the probe fastened on cover plate, this addresses the problem owing to just opening buckle when there is no power cutoff, the electric charge accumulated in caused liquid crystal capacitance can not discharge, and finally cause the problem such as power-off ghost shadow and liquid crystal polarization.
What needs further illustrated is, measurement jig provided by the utility model is not only confined to shown in Fig. 1 and Fig. 4, further, the automatically controlled lockmaking be integrated in one with measurement jig is also not limited to shown in Fig. 2 and Fig. 7, Fig. 2 and Fig. 7 just schematically provides when measurement jig energising and power-off herein, process and the principle of corresponding lock and unlock are locked in electric control, concrete, everyly to meet " when loading substrate with fasten cover plate cover and power supply is energized time, lock is locked in electric control, described loading substrate and described fastening cover plate are fastened, and fasten the probe electric discharge of cover plate, when power supply is not energized, automatically controlled lockmaking unlocks, and loading substrate can separate with fastening cover plate, and the probe power-off of described fastening cover plate " any one measurement jig of the structure of this measurement jig and principle of work can, repeat no more herein, be all included in scope of the present utility model.
Above the measurement jig that the utility model embodiment provides is described in detail, apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (7)
1. a measurement jig, comprising: the loading substrate be oppositely arranged and fastening cover plate, be positioned at the multiple probes on described fastening cover plate, and automatically controlled lockmaking, and described automatically controlled lockmaking and described probe access power supply;
When described loading substrate and described fastening cover plate cover and described power supply is energized, lock is locked in described electric control, described loading substrate and described fastening cover plate is fastened, and the electric discharge of the probe of described fastening cover plate;
When described power supply is not energized, described automatically controlled lockmaking unlocks, and described loading substrate can separate with described fastening cover plate, and the probe power-off of described fastening cover plate.
2. measurement jig as claimed in claim 1, it is characterized in that, described loading substrate comprises the supporting region placing display panel, wherein, described display panel comprises multiple terminal, when described display panel is positioned on described supporting region, multiple terminal of described display panel is corresponding with the multiple probe locations on described fastening cover plate.
3. measurement jig as claimed in claim 2, it is characterized in that, the described probe of part connects ground end, when described supporting region places described display panel, described loading substrate and described fastening cover plate fasten and described power supply is energized time, multiple probe on described fastening cover plate is electrically connected with multiple terminals of described display panel, described display panel display frame;
When described power supply is not energized, the not display frame of described display panel, and electric charge on described display panel will import described end by the described probe of part.
4. measurement jig as claimed in claim 2, it is characterized in that, described fastening cover plate comprises clear glass, when described fastening cover plate and described loading substrate fasten, can see described object carrying area by described clear glass.
5. measurement jig as claimed in claim 1, it is characterized in that, described measurement jig comprises power-on switch and cut-off switch, described power-on switch and described cut-off switch access described power supply respectively, and control energising and the power-off of described power supply, wherein, described measurement jig is electrically connected with a display panel;
When opening described power-on switch, described display panel display frame, lock is locked in described electric control simultaneously, and described loading substrate and described fastening cover plate are fixed on buckling state;
When opening described cut-off switch, the not display frame of described display panel, described automatically controlled lockmaking simultaneously unlocks.
6. measurement jig as claimed in claim 5, is characterized in that, described automatically controlled lockmaking comprises the Part I be fixed on described loading substrate and the Part II be fixed on described fastening cover plate;
Described Part I comprises: shell, is positioned at the first coil of described enclosure, the second coil and spring, and is positioned at the iron pin of described enclosure at least partly; Described first coil is wound around described iron pin at least partly, and accesses described power-on switch; The bearing of trend of described second coil and the bearing of trend of described iron pin all with the plane perpendicular of described shell, the projection of described iron pin on described plane perpendicular direction is positioned among the projection of described second coil on described plane perpendicular direction, and described second coil accesses described power-on switch; The first end of described spring is fixed on the side towards described iron pin of described enclosure bottom, and the second end is fixed on the afterbody of described iron pin;
Described Part II comprises draw-in groove, and the stem of described draw-in groove and described iron pin matches;
When described loading substrate and described fastening cover plate snap together, the first end of described spring, the second end of described spring, described iron pin and described draw-in groove are positioned on same level line, and when described power-on switch is opened, the stem of at least part of described iron pin is positioned at described draw-in groove.
7. measurement jig as claimed in claim 5, it is characterized in that, described electric control locking deviates from the side of described fastening cover plate due to described loading substrate, comprising: shell, be positioned at the tertiary coil of described enclosure, be positioned at the iron pin of described shell at least partly; Also comprise clamp, the first end of described clamp is fixed on the stem of described iron pin, and described clamp extends towards near the direction of described fastening cover plate, and the second end of described clamp has kink;
The bearing of trend of described tertiary coil and the bearing of trend of described iron pin all with the plane perpendicular of described shell, the projection of described iron pin on described plane perpendicular direction is positioned among the projection of described tertiary coil on described plane perpendicular direction, and described tertiary coil accesses described power-on switch;
Described iron pin comprises lattice catch, the bearing of trend of described lattice catch is vertical with the bearing of trend of described iron pin, and the projection of described iron pin on described plane perpendicular direction is positioned among the projection of described lattice catch on described plane perpendicular direction, between described lattice catch and the end face of described shell, be provided with spring, the projection of described iron pin on described plane perpendicular direction is positioned among the projection of described spring on described plane perpendicular direction;
When described loading substrate and described fastening cover plate snap together, and when described power-on switch is opened, the described kink of described clamp drops on the side away from described loading substrate of described fastening cover plate, and lock is locked in described electric control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110070813A (en) * | 2019-05-23 | 2019-07-30 | Oppo广东移动通信有限公司 | Display screen test fixture |
| CN111897154A (en) * | 2020-08-21 | 2020-11-06 | 京东方科技集团股份有限公司 | Transmittance test fixture and test method |
-
2014
- 2014-12-19 CN CN201420815047.9U patent/CN204347378U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110070813A (en) * | 2019-05-23 | 2019-07-30 | Oppo广东移动通信有限公司 | Display screen test fixture |
| CN111897154A (en) * | 2020-08-21 | 2020-11-06 | 京东方科技集团股份有限公司 | Transmittance test fixture and test method |
| CN111897154B (en) * | 2020-08-21 | 2023-08-18 | 京东方科技集团股份有限公司 | Transmittance test fixture and test method |
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