CN1664536A - Method and equipment for detecting liquid crystal panel clearance size - Google Patents
Method and equipment for detecting liquid crystal panel clearance size Download PDFInfo
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- CN1664536A CN1664536A CN 200510064367 CN200510064367A CN1664536A CN 1664536 A CN1664536 A CN 1664536A CN 200510064367 CN200510064367 CN 200510064367 CN 200510064367 A CN200510064367 A CN 200510064367A CN 1664536 A CN1664536 A CN 1664536A
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- crystal panel
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Abstract
A method and system for measuring the change of the liquid crystal's space, including the following steps: a) providing a space sensing device; 2) erecting the liquid crystal and heating it to a measuring temperature; 3) using the space sensing device to measure the liquid crystal and getting the change of the space. The invention can measure the space heterogeneous of the liquid crystal plate caused by the gravity effectively and simulate the true using condition.
Description
Technical field
The present invention is particularly to a kind of detection method and checkout equipment thereof of panel gap size relevant for a kind of detection method and checkout equipment thereof.
Background technology
LCD Technology utilizes liquid crystal as photoswitch, to control picture brightness and the color that LCD is exported.And in the middle of LCD, liquid crystal is poured among two sheet glass to suck or the mode that splashes into.After liquid crystal filling is finished, as shown in Fig. 1 a, whether liquid crystal panel 2 can be placed on the detection platform 3 by level, and detects the gap length (cell gap) of this liquid crystal panel 2 by a gap length sensing apparatus 1, be poured into uniformly among the liquid crystal panel 2 to confirm liquid crystal.The detection mode of gap length sensing apparatus 1 is generally that earlier 2 emissions one detect light beam 11 to liquid crystal panel, receives a Returning beam 12 that reflects from this liquid crystal panel 2 again, and detecting detects the phase delay between light beam 11 and the Returning beam 12, and according to formula:
Phase delay=(nx-ny) * gap length (1)
Just can calculate the gap length of liquid crystal panel 2, wherein (nx-ny) is the birefraction of liquid crystal.
Yet along with the size of LCD increases gradually, the amount of liquid crystal in the liquid crystal panel also increases gradually.Therefore, when liquid crystal panel is vertically put when show image (for example, under general user mode), liquid crystal is subjected to the influence of gravity easily and flows downward.With reference to Fig. 1 b, it shows the inner structure synoptic diagram of liquid crystal panel 2, when liquid crystal panel 2 vertical storings, liquid crystal 22 between the sheet glass 21 be subjected to gravity and according to arrow indicated be directed downwards mobile, therefore cause the gap length of liquid crystal panel 2 inhomogeneous (for example, the gap length of liquid crystal panel 2 Lower Halves is bigger).So can reduce the display quality of LCD, and shorten the life-span of display.
Yet the liquid crystal panel that existing gap length detection mode is all only put at level detects, and therefore can't detect the above-mentioned gap length non-uniform phenomenon that is produced by gravity effect.
And, when LCD was used, its temperature raise gradually, was heated and under the situation about expanding at sheet glass, the aforementioned gap length non-uniform phenomenon that produces because of gravity effect is even more serious, and existing gap length detection mode and can't detecting at this problem.
Summary of the invention
The present invention has been and has solved above-mentioned prior art problems, and a kind of detection method is provided, and changes with the gap length that detects a liquid crystal panel, comprises the steps: at first to provide a gap length sensing apparatus; Then that this liquid crystal panel is upright, and, allow this liquid crystal panel arrive a detected temperatures to this liquid crystal panel heating; At last, this upright liquid crystal panel is detected, change with the gap length of measuring this liquid crystal panel with this gap length sensing apparatus.
Because the present invention is directed to the liquid crystal panel that is in erectility detects, therefore, use the present invention, can effectively detect the gap length non-uniform phenomenon that liquid crystal panel produces because of gravity effect.And the present invention heats liquid crystal panel when detecting simultaneously, the situation that artificial actual that therefore can be certain uses, when detecting actual use liquid crystal panel the gap length problem that may produce.
Description of drawings
Fig. 1 a is an available liquid crystal gap length detection mode synoptic diagram;
Fig. 1 b is that liquid crystal is subjected to the synoptic diagram that gravity flows downward;
Fig. 2 a is for showing checkout equipment synoptic diagram of the present invention, and wherein, this clamping device is in a vertical orientations;
Fig. 2 b is for showing checkout equipment synoptic diagram of the present invention, and wherein, this clamping device is in a level orientation;
Fig. 3 is for showing the detected area schematic of liquid crystal panel among the present invention.
Description of reference numerals:
Gap length sensing apparatus 1 liquid crystal panel 2 detection platform 3
Detect light beam 11 Returning beams 12 sheet glass 21
Zone 23 corner regions 24 that liquid crystal 22 is highly lower
Fringe region 25 checkout equipments 100 clamping devices 110
Embodiment
The present invention is above-mentioned to be become apparent with other purpose, feature and advantage in order to allow, and preferred embodiment cited below particularly and conjunction with figs. are described in detail below.
With reference to Fig. 2 a, the invention provides a checkout equipment 100, so that liquid crystal panel 2 is detected.This checkout equipment 100 comprises that a clamping device 110, a delivery platform 120, a gap length sensing apparatus 130, control platform 140, a position sensing device 150, a heating arrangement 160 and a cavity 170.Clamping device 110, delivery platform 120, gap length sensing apparatus 130, position sensing device 150 and heating arrangement 160 all are positioned among the cavity 170.Clamping device 110 utilizes a pivot 111, is articulated on the delivery platform 120.Clamping device 110 also includes a plurality of vacuum and inhales hole 112 (pull of vacuum assembly), is located at this clamping device 110 surfaces, and this equal vacuum is inhaled hole 112 and a vacuum line 113 connections, and with this liquid crystal panel 2 of mode clamping of vacuum suction.
In an embodiment of the present invention, clamping device 110 is with this liquid crystal panel 2 of mode clamping of vacuum suction, but be not intended to limit the invention, clamping device 110 also can pass through alternate manners such as engaging, locking, and liquid crystal panel 2 is fixed on the clamping device 110.
This this liquid crystal panel 2 of clamping device 110 clampings, and be positioned at a vertical orientations (orientation shown in Fig. 2 a), so that this liquid crystal panel 2 is maintained at upright state.Position sensing device 150 is used for this clamping device 110 of sensing and whether is positioned at this vertical orientations accurately.The liquid crystal panel 2 that 130 pairs of gap length sensing apparatus are in vertical orientations detects.This gap length sensing apparatus 130 and this position sensing device 150 all are coupled to controls platform 140.The testing result of this gap length sensing apparatus 130 and this position sensing device 150 all is sent to this and controls platform 140, and simultaneously, the user also can control by controlling 140 pairs of gap length sensing apparatus 130 of platform.And the testing result of this gap length sensing apparatus 130 also can be controlled platform 140 outputs by this.
In the present embodiment, this position sensing device 150 is an optical sensor, yet it can also be the sensor of press-contacting type or other form.This gap length sensing apparatus 130 can be the big tomb gap length sensing apparatus that company provided such as (OTSUKA), and its sensing principle utilizes the phenomenon of phase delay to detect also according to aforesaid formula (1).Control platform 140 and can be a computing machine.By controlling platform 140, the sensing sensitivity of clearance-adjustable size sensing apparatus 130 is with the liquid crystal panel 2 that detects various kinds and size accurately.
The present invention's detection method below is described.
With reference to Fig. 2 b, at first, liquid crystal panel 2 moves to a precalculated position by delivery platform 120.Then, this clamping device 110 is switched to a level orientation (orientation shown in Fig. 2 b), and contacts this liquid crystal panel 2.Then, this vacuum is inhaled hole 112 these liquid crystal panels 2 of absorption.
With reference to Fig. 2 a, adsorb after this liquid crystal panel 2 with pull of vacuum, this clamping device 110 is switched to this vertical orientations.After this clamping device 110 arrived this vertical orientations, this position sensing device transmitted a location sensing signal and controls platform 140 to this.After this is controlled platform 140 and receives this location sensing signal, drive this gap length sensing apparatus 130 and detect.At this moment, this heating arrangement 160 with the temperature maintenance of this liquid crystal panel 2 in this detected temperatures.This gap length sensing apparatus 130 detects this liquid crystal panel 2 with about 3 hours time remaining, changes with the gap length that writes down this liquid crystal panel 2.The detection position of this gap length sensing apparatus 130, with reference to Fig. 3, the lower zone 23 of height that is primarily aimed at this liquid crystal panel 2 is detected, particularly, at highly lower corner regions 24 or highly lower fringe region 25 detects.
Because the present invention is directed to the liquid crystal panel that is in erectility detects, therefore, use the present invention, can effectively detect the gap length non-uniform phenomenon that liquid crystal panel produces because of gravity effect.And the present invention heats liquid crystal panel when detecting simultaneously, the situation that artificial actual that therefore can be certain uses, when detecting actual use liquid crystal panel the gap length problem that may produce.
Though the present invention has done explanation as above with preferred embodiment; but it is not in order to limit the present invention; any those skilled in the art; in not breaking away from method of the present invention and scope; can do various replacements and modification, so protection domain of the present invention being as the criterion with defined in claims.
Claims (20)
1. one kind is detected the method that the liquid crystal panel gap length changes, and it is characterized in that comprising:
One gap length sensing apparatus is provided;
Described liquid crystal panel is upright;
With described gap length sensing apparatus upright described liquid crystal panel is detected, change with the gap length of measuring described liquid crystal panel.
2. method according to claim 1 is characterized in that: described liquid crystal panel is a penetration liquid crystal panel.
3. method according to claim 1 is characterized in that: described liquid crystal panel is a reflection type liquid crystal panel.
4. method according to claim 1 is characterized in that: described liquid crystal panel is a Transflective liquid crystal panel.
5. method according to claim 1 is characterized in that also comprising:
Described liquid crystal panel is heated to a detected temperatures, and described detected temperatures is between 50 ℃ to 70 ℃.
6. method according to claim 5 is characterized in that: described detected temperatures is 60 ℃.
7. method according to claim 1 is characterized in that: the time span that described gap length sensing apparatus detects described liquid crystal panel is 3 hours.
8. method according to claim 1 is characterized in that: described gap length sensing apparatus detects at the lower zone of the height of described liquid crystal panel.
9. method according to claim 8 is characterized in that: described gap length sensing apparatus detects at the lower corner regions of the height of described liquid crystal panel.
10. method according to claim 8 is characterized in that: described gap length sensing apparatus detects at the lower fringe region of the height of described liquid crystal panel.
11. method according to claim 1 is characterized in that: described gap length sensing apparatus is a light sensing apparatus.
12. one kind is detected the equipment that the liquid crystal panel gap length changes, it is characterized in that comprising:
One clamping device is in order to the described liquid crystal panel of clamping; And
One gap length sensing apparatus, the gap length of measuring described liquid crystal panel changes;
Wherein, the described liquid crystal panel of described clamping device clamping, and described liquid crystal panel is maintained at a plumbness.
13. equipment according to claim 12 is characterized in that: described clamping device comprises at least one pull of vacuum assembly, and described clamping device utilizes the described liquid crystal panel of described pull of vacuum assembly clamping.
14. equipment according to claim 12 is characterized in that: described clamping device comprises a pivot, and described clamping device utilizes described pivot, rotates between a vertical orientations and a level orientation.
15. equipment according to claim 14 is characterized in that: described clamping device begins described liquid crystal panel is carried out clamping in described level orientation, and utilizes described pivot, described liquid crystal panel is rotated to described upright position, to detect.
16. equipment according to claim 15 is characterized in that: after detection was finished, described clamping device rotated to described level orientation with described liquid crystal panel, and discharged described liquid crystal panel.
17. equipment according to claim 14 is characterized in that also comprising a position sensing device, and described clamping device is carried out sensing, to confirm the location situation of described clamping device when the described vertical orientations.
18. equipment according to claim 12 is characterized in that also comprising a heating arrangement, so that described liquid crystal panel is heated.
19. equipment according to claim 12 is characterized in that also comprising and controls platform, couples described gap length sensing apparatus, to regulate and control the sensing acuity of described gap length sensing apparatus.
20. equipment according to claim 12 is characterized in that also comprising and controls platform, couples described gap length sensing apparatus, to export the sensing result of described gap length sensing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510064367 CN1664536A (en) | 2005-04-14 | 2005-04-14 | Method and equipment for detecting liquid crystal panel clearance size |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510064367 CN1664536A (en) | 2005-04-14 | 2005-04-14 | Method and equipment for detecting liquid crystal panel clearance size |
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| CN1664536A true CN1664536A (en) | 2005-09-07 |
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| CN 200510064367 Pending CN1664536A (en) | 2005-04-14 | 2005-04-14 | Method and equipment for detecting liquid crystal panel clearance size |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437226C (en) * | 2006-12-05 | 2008-11-26 | 友达光电股份有限公司 | Checking platform and checking method using the same |
| CN103983350A (en) * | 2014-05-13 | 2014-08-13 | 保定维特瑞交通设施工程有限责任公司 | Device for testing luminous intensity changes of parallel optical axis of traffic display unit |
| CN106054442A (en) * | 2016-08-18 | 2016-10-26 | 京东方科技集团股份有限公司 | Display panel and cell gap test method thereof and display device |
-
2005
- 2005-04-14 CN CN 200510064367 patent/CN1664536A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437226C (en) * | 2006-12-05 | 2008-11-26 | 友达光电股份有限公司 | Checking platform and checking method using the same |
| CN103983350A (en) * | 2014-05-13 | 2014-08-13 | 保定维特瑞交通设施工程有限责任公司 | Device for testing luminous intensity changes of parallel optical axis of traffic display unit |
| CN103983350B (en) * | 2014-05-13 | 2016-06-01 | 保定维特瑞交通设施工程有限责任公司 | The device of test traffic display unit parallel optical axis luminous intensity variations |
| CN106054442A (en) * | 2016-08-18 | 2016-10-26 | 京东方科技集团股份有限公司 | Display panel and cell gap test method thereof and display device |
| CN106054442B (en) * | 2016-08-18 | 2019-04-09 | 京东方科技集团股份有限公司 | Display panel and its box thickness test method, display device |
| US10983375B2 (en) | 2016-08-18 | 2021-04-20 | Boe Technology Group Co., Ltd. | Display panel, method for testing cell gap thereof, and display device |
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Owner name: YOUDA PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: GUANGHUI ELECTRONIC CO., LTD. Effective date: 20071123 |
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Effective date of registration: 20071123 Address after: Hsinchu city of Taiwan Province Applicant after: AU Optronics Corporation Address before: Taoyuan County of Taiwan Province Applicant before: Guanghui Electronic Co., Ltd. |
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Open date: 20050907 |