CN202522821U - Liquid crystal grating, 3D display element and 3D display device - Google Patents

Liquid crystal grating, 3D display element and 3D display device Download PDF

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Publication number
CN202522821U
CN202522821U CN2012201965520U CN201220196552U CN202522821U CN 202522821 U CN202522821 U CN 202522821U CN 2012201965520 U CN2012201965520 U CN 2012201965520U CN 201220196552 U CN201220196552 U CN 201220196552U CN 202522821 U CN202522821 U CN 202522821U
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China
Prior art keywords
liquid crystal
upper substrate
touch
infrabasal plate
crystal grating
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Expired - Lifetime
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CN2012201965520U
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Chinese (zh)
Inventor
杨盛际
吴俊纬
王海生
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BOE Technology Group Co Ltd
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Beijing BOE Optoelectronics Technology Co Ltd
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Abstract

The utility model discloses a liquid crystal grating, a 3D display element and a 3D display device. The liquid crystal grating comprises an upper substrate, a lower substrate, a glue frame connected to the edges of the upper substrate and the lower substrate in a sealing manner, and a liquid crystal arranged in a liquid crystal space enclosed by the upper substrate, the lower substrate and the glue frame. The liquid crystal grating also comprises a planar electrode and a bar-shaped electrode, wherein the planar electrode is arranged on one surface of the upper substrate, which faces towards the liquid crystal and is grounded, and the bar-shaped electrode is arranged on one surface of the lower substrate, which faces towards the liquid crystal. Because the planar electrode in the liquid crystal grating, which is formed on the lower surface of the upper substrate, is grounded, signal interference between a 3D control part and a touch control part in the liquid crystal grating can be shielded.

Description

Liquid crystal grating, 3D display device and 3D display device
Technical field
The utility model relates to the display technique field, relates in particular to a kind of liquid crystal grating, 3D display device and 3D display device.
Background technology
At present, 3D product and touch-control (Touch) technical products is increasingly high by the degree that the consumer pursues, and under so big demand circumstances, both integrated products are also paid close attention to by numerous module producer.But mostly both are simply combined in the prior art, there are problems in general like this array mode.
See from structure aspects, as shown in Figure 1, be existing 3D grating+external hanging type touch screen (On CellTouch) structural representation.Wherein, comprise display unit 1 and hang over the 3D parts 2 and touch-control parts (Touch sensor) 3 on the display unit 1 outward.These 3D parts 2 comprise the upper substrate 22 and infrabasal plate 23 that connects through glue frame 21, and the liquid crystal 24 between upper substrate 22, infrabasal plate 23 is positioned at the strip shaped electric poles 25 and the face electrode 26 that is positioned at infrabasal plate 23 upper surfaces of upper substrate 22 lower surfaces.Touch-control parts 3 comprise conductive layer, first insulation course, touch control electrode layer, second insulation course and protective seam (not shown in figure 1).
There is following problem in such structure:
If 1 with 3D parts 2 and 3 simple, mechanical the combining of touch-control parts; Just adopt Add On external hanging type touch-screen+3D to show the module form, can cause complex manufacturing process, problems such as cost of manufacture height; And the thickness of entire module is bigger, certainly will also influence the 3D display effect.
2, adopt structure shown in Figure 1, exist bigger signal to disturb between touch-control parts 3 and the 3D parts 2.Fig. 2 is 2 strip shaped electric poles 25 and the position view of face electrode 26 in touch control electrode layer 31 and the 3D parts in the touch-control parts 3.When strip shaped electric poles 25 ground connection, face electrode 26 transmission alternating currents; Because the electric current of face electrode 26 transmits through the conducting resinl TR outside the glue frame 21 at upper substrate 22 periphery circuits; And peripheral wiring and touch control electrode layer 31 have the overlapping part in vertical direction, cause the alternating current in the face electrode 26 that touch-control parts 3 are produced the signal interference.Otherwise, when strip shaped electric poles 25 transmission alternating currents, face electrode 26 ground connection,, cause the alternating current in the strip shaped electric poles 25 that touch-control parts 3 are produced serious signal interference because strip shaped electric poles 25 has the overlapping part in vertical direction with touch control electrode layer 31.
3, in the prior art, the FPC of touch-control parts 3 (Flexible Printed Circuit board, flexible printed circuit board) welding region (Bonding) position unsettled (among Fig. 1 shown in the dotted line circle) is not easy correspondence when causing BondingFPC.
Below in conjunction with accompanying drawing the process of making this 3D grating+On Cell Touch structure in the prior art is described, as shown in Figure 3, comprising:
Step 301, make the alignment mark of metal on the surface (like lower surface) of upper substrate;
Step 302, upset upper substrate, (corresponding to upper surface) made conductive layer, first insulation course, touch control electrode layer, second insulation course and the protective seam of touch-control parts on another surface;
Step 303, the upper substrate that overturns are once more made the strip shaped electric poles layer on the surface with alignment mark, and the weld zone that is used for welding pin.
See from technological process; When making this 3D grating+On Cell Touch structure in the prior art,, make the 3D layer again if make the Sensor layer at the upper substrate upper surface earlier; When forming the metal level of 3D layer, possibly etch away the golden finger of FPC Bonding in the touch-control parts in this case.And this process Sensor face too much contacts the transportation roller, if do not adopt any safeguard measure to cause the scratch of Sensor face easily.Make the Sensor layer again if make the 3D layer earlier; Upper substrate (like glass substrate) can upset 2 times (processing procedure once, contraposition once) like this, because prior art need be used artificial upset upper substrate, has so not only increased the upset number of times; Reduced production capacity, and artificial upset can cause scuffing.If on upper substrate, make earlier the 3D metal level, make the Sensor layer again, do 3D ITO layer again, though substrate overturn number of times can reduce contraposition like this time needs substrate overturn 2 times equally in the processing procedure.
To sum up, there is bigger signal interference problem in 3D grating in the prior art+On Cell Touch structure, and the substrate overturn number of times is more in the making flow process, inevitably substrate is caused more scratch.
The utility model content
The utility model embodiment provides a kind of liquid crystal grating, 3D display device and 3D display device, can avoid touch-control parts in the liquid crystal grating to receive the interference of electric field.
The utility model embodiment provides a kind of liquid crystal grating; Comprise: upper substrate, infrabasal plate, the glue frame at be tightly connected said upper substrate and said infrabasal plate edge; Be arranged in the liquid crystal of the liquid crystal spatial that surrounds by said upper substrate, said infrabasal plate and said glue frame, also comprise:
Said upper substrate has the face electrode towards the one side of liquid crystal, said electrode grounding;
Said infrabasal plate has strip shaped electric poles towards the one side of liquid crystal.
Accordingly, the utility model embodiment provides a kind of 3D display device, comprises liquid crystal panel and the liquid crystal grating that is arranged at said liquid crystal panel top, the liquid crystal grating that said liquid crystal grating provides for the utility model embodiment.
Accordingly, the utility model embodiment also provides a kind of 3D display device, comprises the 3D display device that the utility model embodiment provides.
The utility model embodiment provides a kind of liquid crystal grating, 3D display device and 3D display device; Comprise: upper substrate; Infrabasal plate, the glue frame at be tightly connected upper substrate and infrabasal plate edge is arranged in the liquid crystal of the liquid crystal spatial that is surrounded by upper substrate, infrabasal plate and glue frame; Also comprise: upper substrate has the face electrode towards the one side of liquid crystal, the face electrode grounding; Infrabasal plate has strip shaped electric poles towards the one side of liquid crystal.Because with the face electrode grounding that on the lower surface of upper substrate, forms in the liquid crystal grating, can shield the signal interference between the 3D control section divides with touch control part in the liquid crystal grating.
Description of drawings
Fig. 1 is 3D grating in the prior art+On Cell Touch structural representation;
Fig. 2 is the strip shaped electric poles in the touch control electrode layer in the touch-control parts and the 3D parts and the position view of face electrode in the prior art;
Fig. 3 is a schematic flow sheet of making 3D grating+On Cell Touch structure in the prior art;
Fig. 4 is the method for making schematic flow sheet of liquid crystal grating among the utility model embodiment;
Fig. 5 is the synoptic diagram after the upper substrate upper surface is made touch-control parts conductive layer and alignment mark among the utility model embodiment;
Fig. 6 is the method for making schematic flow sheet of liquid crystal grating among another embodiment of the utility model;
Fig. 7 a to Fig. 7 h is each step synoptic diagram of making liquid crystal grating among another embodiment of the utility model;
Fig. 8 is the structural representation of liquid crystal grating among the utility model embodiment;
Fig. 9 is the structural representation of 3D display device among the utility model embodiment.
Embodiment
At length set forth to the main realization principle of the utility model embodiment technical scheme, embodiment and to the beneficial effect that should be able to reach below in conjunction with each accompanying drawing.
In order to solve the problem that prior art exists, the utility model embodiment provides a kind of method for making of liquid crystal grating, and is as shown in Figure 4, and this method comprises:
Step 401, preset figure according to first, make conductive layer and alignment mark at the upper surface of upper substrate;
Step 402, on conductive layer, make first insulation course, touch control electrode layer and second insulation course successively;
Step 403, make face electrode, this face electrode grounding at the lower surface of upper substrate;
Step 404, according to alignment mark upper substrate and infrabasal plate are carried out box-like is become liquid crystal grating, wherein the upper surface of infrabasal plate has strip shaped electric poles.
In the method that the utility model embodiment provides,, use liquid crystal grating to refer to 3D grating+On Cell Touch structure among the utility model embodiment for more convenient explanation technical scheme.In order to solve the problem that exists in the prior art, the creationary method for making that proposes liquid crystal grating of the utility model embodiment.At first, omitted the step that the lower surface of the upper substrate in liquid crystal cell (3D parts) is made the alignment mark of metal in the method for making of the utility model, directly made the conductive layer in the touch-control parts (touch sensor) at the upper surface of upper substrate.Concrete, according to first presetting pattern, produce conductive layer and alignment mark simultaneously at the upper surface of upper substrate through composition technology.As shown in Figure 5,, the upper surface of upper substrate smears photoresist after covering metal, then, this photoresist is carried out etching according to first presetting pattern, finally form conductive layer 51 and alignment mark 52.Form conductive layer 51 and alignment mark 52 simultaneously, also can reduce the mask exposure number of times, practiced thrift cost of manufacture.First insulation course, touch control electrode layer and second insulation course are made in continuation on conductive layer, accomplish the making of touch-control parts.
Then, upper substrate is overturn, the lower surface that makes upper substrate is towards the top; Through sputter coating or chemical vapor deposition mode, form the face electrode at lower surface.Concrete, this upper substrate that overturns, the surface (lower surface) that this upper substrate is not had touch-control parts and forms the face electrode up on this lower surface.When liquid crystal grating was worked, the voltage of this face electrode kept 0 volt, i.e. ground voltage.Can shield of the influence of the electric field of the 3D control section in the liquid crystal grating like this, and then improve signal to noise ratio (S/N ratio) the touching signals of touch-control parts.After the making of finished surface electrode, the upper substrate of liquid crystal grating part is basic to be accomplished.
When making infrabasal plate,, make strip shaped electric poles at the upper surface of infrabasal plate through composition technology according to second presetting pattern; Upper surface at infrabasal plate forms the flexible PCB junction.During to box, according to alignment mark, confirm upper substrate and infrabasal plate to the box relative position; Use envelope frame glue, the lower surface edge of upper substrate and the top surface edge of infrabasal plate are sealed, form the glue frame; Filling liquid crystal in upper substrate, infrabasal plate and the formed cavity of glue frame.Wherein, upper substrate and infrabasal plate to box after, the flexible PCB junction is positioned at outside the space that glue frame and upper substrate and infrabasal plate constitute.
After having made liquid crystal grating; Can hang over this liquid crystal grating on the liquid crystal panel outward; Just; The lower surface and the liquid crystal panel of infrabasal plate are fit together, for example can use OCA (Optical ClearAdhesive, optical cement) that the edge of infrabasal plate in the liquid crystal grating and liquid crystal panel is fit together.
In addition, also have the junction of touch-control parts FPC at the upper surface of touch-control parts, the forming process of this junction repeats no more at this.
The method for making of the liquid crystal grating that the utility model embodiment is provided through specific embodiment below is elaborated, and handles infrabasal plate again and is example to handle upper substrate earlier, and is as shown in Figure 6, may further comprise the steps:
Step 601, form the layer of metal layer at the upper surface of upper substrate; Shown in Fig. 7 a, as shown in the figure for this upper substrate synoptic diagram in vertical direction, form metal level 72 on the upper substrate 71.This metal level 72 has covered the upper surface of whole upper substrate 71.
Step 602, according to first presetting pattern, through this metal level of composition technology etching, form the conductive layer of touch-control parts and the alignment mark that is used for upper and lower substrate contraposition; Shown in Fig. 7 b, be the vertical view of touch-control parts conductive layer and alignment mark, form the conductive layer 73 and alignment mark 74 of touch-control parts on the upper substrate 71;
First insulation course, touch control electrode layer, second insulation course and protective seam are made in step 603, continuation; Shown in Fig. 7 c, on the basis of Fig. 7 a, 7b, first insulation course 75, touch control electrode layer 76 and second insulation course 77 have been made successively.Wherein, when making touch control electrode layer 76, on first insulation course 75, cover one deck ITO earlier, form touch control electrode layer (also can be described as the ITO electrode layer) according to the 3rd presetting pattern through composition technology then.
Step 604, upset upper substrate, the lower surface injection layer of even ITO at upper substrate forms the face electrode; Shown in Fig. 7 d, on the basis of Fig. 7 c, at the lower surface formation face electrode 78 of upper substrate 71.The making of the upper substrate 71 of so basic completion touch-control parts and liquid crystal grating, and the upper substrate 71 that only overturns in the manufacturing process one time.In addition, during the liquid crystal grating operate as normal, the ground connection of this face electrode 78, voltage is 0, the electric field of 3D control section that has shielded liquid crystal grating thus is to the interference of the touch-control signal of touch-control parts, and then improves signal to noise ratio (S/N ratio).
Step 605, make strip shaped electric poles at the upper surface of infrabasal plate; Upper surface at infrabasal plate forms the flexible PCB junction; Concrete, shown in Fig. 7 e, according to second presetting pattern, make strip shaped electric poles 82 at the upper surface of infrabasal plate 81, and form flexible PCB junction 83 through composition technology.After accomplishing the making of upper substrate and infrabasal plate, both are carried out box.Wherein, upper substrate and infrabasal plate to box after, the flexible PCB junction is positioned at outside the space that glue frame and upper substrate and infrabasal plate constitute.
Step 606, envelope frame glue is set at the edge of infrabasal plate, and in the zone that envelope frame glue surrounds the injection liquid crystal; Shown in Fig. 7 f, the edge of infrabasal plate 81 is provided with envelope frame glue 84, and this envelope frame glue 84 surrounds the liquid crystal drip-injection district at infrabasal plate 81.Then, in this liquid crystal drip-injection district, inject liquid crystal 85.
Step 607, according to alignment mark, confirm upper substrate and down basic between relative position, carry out box; Shown in Fig. 7 g, infrabasal plate 81, upper substrate 71 and glue frame have constituted confined space, and flexible PCB junction 83 is positioned at outside the space of glue frame and upper substrate 71 and infrabasal plate 81 formations.
Step 608, hang over this liquid crystal grating on the liquid crystal panel outward; Shown in Fig. 7 h, use OCA 91 that the edge of the infrabasal plate in the liquid crystal grating 81 with device display 9 fit together.
Through foregoing description, can find out, use the method for making of the liquid crystal grating that the utility model embodiment provides, in liquid crystal grating,, shielded the signal interference between dividing of 3D control section and touch control part with the face electrode grounding that the lower surface of upper substrate forms.And, owing at the conductive layer of making the touch-control part simultaneously, made alignment mark, reduce the number of times of substrate overturn thus, and then reduce scratch to substrate surface, wearing and tearing etc.In addition, form conductive layer and alignment mark simultaneously, reduced the mask exposure number of times, practiced thrift cost of manufacture.
Based on same utility model design, the utility model embodiment also provides a kind of liquid crystal grating, adopts the method for making of above-mentioned liquid crystal grating to process.
A kind of liquid crystal grating that the utility model embodiment provides; As shown in Figure 8; Comprise: upper substrate 801, infrabasal plate 802, the glue frame 803 at be tightly connected upper substrate 801 and infrabasal plate 802 edges; Be arranged in the liquid crystal 804 of the liquid crystal spatial that surrounds by upper substrate 801, infrabasal plate 802 and glue frame 803, also comprise:
Upper substrate 801 has face electrode 805 towards the one side of liquid crystal 804, face electrode 805 ground connection;
Infrabasal plate 802 has strip shaped electric poles 806 towards the one side of liquid crystal 804.
Preferably, also comprise: be positioned at the one side of infrabasal plate 2, and be positioned at the flexible PCB junction 807 in the outside, liquid crystal 804 spaces towards liquid crystal 804.
Preferably, also comprise: upper substrate 801 one side of liquid crystal 804 dorsad has the touch-control parts; These touch-control parts comprise conductive layer 808, first insulation course 809, touch control electrode layer 810 and second insulation course 811, wherein, also comprise the alignment mark 812 that forms simultaneously with conductive layer 808.
In addition, the flexible PCB junction 813 that can also have touch-control parts FPC of the upper surface of this touch-control parts second insulation course 811.The manufacturing process employing of this flexible PCB junction 813 well known to a person skilled in the art repeats no more mode at this.
Based on same utility model design; The utility model embodiment also provides a kind of 3D display device; As shown in Figure 9, comprising: liquid crystal panel 901 and the liquid crystal grating 902 that is arranged at the liquid crystal panel top, the liquid crystal grating that this liquid crystal grating 902 provides for the utility model embodiment.
Based on same utility model design, the utility model embodiment also provides a kind of 3D display device, comprises the 3D display device that the utility model embodiment provides.
The liquid crystal grating that the utility model embodiment provides, 3D display device and 3D display device; Comprise: upper substrate; Infrabasal plate, the glue frame at be tightly connected upper substrate and infrabasal plate edge is arranged in the liquid crystal of the liquid crystal spatial that is surrounded by upper substrate, infrabasal plate and glue frame; Also comprise: upper substrate has the face electrode towards the one side of liquid crystal, the face electrode grounding; Infrabasal plate has strip shaped electric poles towards the one side of liquid crystal.Because the face electrode grounding that forms on the lower surface with upper substrate in the liquid crystal grating can shield the signal interference between the 3D control section divides with touch control part in the liquid crystal grating.In addition,, also can reduce the mask exposure number of times, practice thrift cost of manufacture owing to form conductive layer and alignment mark simultaneously.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.

Claims (5)

1. liquid crystal grating comprises: upper substrate, and infrabasal plate, the glue frame at be tightly connected said upper substrate and said infrabasal plate edge is arranged in the liquid crystal of the liquid crystal spatial that is surrounded by said upper substrate, said infrabasal plate and said glue frame, it is characterized in that, also comprises:
Said upper substrate has the face electrode towards the one side of liquid crystal, said electrode grounding;
Said infrabasal plate has strip shaped electric poles towards the one side of liquid crystal.
2. liquid crystal grating as claimed in claim 1 is characterized in that, also comprises:
Be positioned at the one side of said infrabasal plate, and be positioned at the flexible PCB junction in the said liquid crystal spatial outside towards liquid crystal.
3. according to claim 1 or claim 2 liquid crystal grating is characterized in that, also comprises:
The said upper substrate one side of liquid crystal dorsad has the touch-control parts; Said touch-control parts comprise: conductive layer, first insulation course, touch control electrode layer and second insulation course;
The alignment mark that forms simultaneously with said conductive layer.
4. a 3D display device comprises liquid crystal panel and the liquid crystal grating that is arranged at said liquid crystal panel top, it is characterized in that said liquid crystal grating is each described liquid crystal grating of claim 1-3.
5. a 3D display device is characterized in that, comprises 3D display device as claimed in claim 4.
CN2012201965520U 2012-05-03 2012-05-03 Liquid crystal grating, 3D display element and 3D display device Expired - Lifetime CN202522821U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013163881A1 (en) * 2012-05-03 2013-11-07 北京京东方光电科技有限公司 Liquid crystal grating and manufacturing method thereof, and 3d display device
CN104155766A (en) * 2014-06-28 2014-11-19 中航华东光电（上海）有限公司 2D/3D switchable and viewpoint-adjustable naked eye 3D display device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013163881A1 (en) * 2012-05-03 2013-11-07 北京京东方光电科技有限公司 Liquid crystal grating and manufacturing method thereof, and 3d display device
CN104155766A (en) * 2014-06-28 2014-11-19 中航华东光电（上海）有限公司 2D/3D switchable and viewpoint-adjustable naked eye 3D display device and method

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C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD

Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD.

Effective date: 20150707

Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY

Effective date: 20150707

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150707

Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No.

Patentee after: BOE Technology Group Co., Ltd.

Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd.

Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8

Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20121107