CN105573557A - Touch display panel and touch display device - Google Patents
Touch display panel and touch display device Download PDFInfo
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- CN105573557A CN105573557A CN201610072086.8A CN201610072086A CN105573557A CN 105573557 A CN105573557 A CN 105573557A CN 201610072086 A CN201610072086 A CN 201610072086A CN 105573557 A CN105573557 A CN 105573557A
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- polaroid
- link
- display panel
- touch
- control display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a touch display panel. The touch display panel comprises a lower substrate, an upper substrate and a polaroid which are stacked in sequence. The touch display panel further comprises a flexible circuit board, wherein the flexible circuit board is provided with a grounding circuit and a first connecting terminal communicated with the grounding circuit, and the first connecting terminal is electrically connected with the polaroid. The touch display panel can prevent electrostatic interference signals, the manufacturing technology is simple, the situation that impurities are introduced by uncovering a protection film of the polaroid before cover plate attaching is avoided, and the display effect is good. The invention further discloses a touch display device.
Description
Technical field
The present invention relates to touch-control display field, particularly relate to a kind of touch-control display panel and comprise the touch control display apparatus of described touch-control display panel.
Background technology
Touch-control display panel extensively should have in electronic products such as mobile phone, notebook computer, supervising devices.Touch-control display panel all comprises touch-control module and display module, realize touch-control and show a variety of scheme, in the conventional technology, touch-control module and display module are made on two pieces of panels respectively, Thickness Ratio is larger, operation is more loaded down with trivial details, and along with the multiduty demand of the many experience in market, touch-control display panel is more prone to lightening trend development.Touch-control and Presentation Function are integrated in display panel and realize lightening by In-cell touch display panel (in-cell), thus meet the lightening development trend of touch control display apparatus now, become the main product that market is chased.In-cell touch display panel touch control induction circuit is made in the liquid crystal region between display panel two-layer substrate (colored optical filtering substrates and array base palte) glass.In the making and use procedure of touch-control display panel, easy generation electrostatic is also gathered in colored optical filtering substrates, when electrostatic accumulation will produce electrostatic field to a certain extent, this electrostatic field will disturb the signal of touch control induction circuit, and then cannot correct signal transmission.
In order to solve above-mentioned electrostatic problem, prior art is usually by the polaroid edge coating conductive silver glue above colored optical filtering substrates, and the zero potential of this conductive silver glue with the thin film transistor (TFT) of array base palte is connected, to eliminate the electrostatic be accumulated on colored optical filtering substrates.But, because coated with conductive glue relates to array base palte, colored optical filtering substrates and the several lamination of polaroid, need to carry out a glue in the operation of binding flexible PCB, also by described conductive silver glue point, make it to cross over array base palte, the end face of colored optical filtering substrates and polaroid, and polaroid needs diaphragm protection before fitting with cover plate always, in order to avoid scratch or make dirty, but in a glue process, part diaphragm must be torn up in order to coat conductive silver glue on polaroid, but, after diaphragm is torn up, in subsequent handling (as testing electrical property, outward appearance detects) in be easily scraped off and/or introduce impurity, cause during follow-up laminating cover plate and occur that bad phenomenon (such as, bubble), have a strong impact on display effect.In addition, in this scheme, conductive silver glue is owing to will cross over the end face of array base palte, colored optical filtering substrates and polaroid and easy disconnected glue, the ground wire loose contact of polaroid and array base palte is often caused during disconnected glue, thus cannot in time the electrostatic on colored optical filtering substrates be derived, thus interference touching signals, cause touching signals correctly to transmit.
Summary of the invention
Technical matters to be solved by this invention is; there is provided a kind of touch-control display panel, described touch-control display panel can prevent electrostatic interference signal, and manufacture craft is simple; and avoid tearing up the diaphragm of polaroid before laminating cover plate operation and introduce the phenomenon of impurity, display effect is good.
In order to solve the problems of the technologies described above, the present invention by the following technical solutions:
The invention provides a kind of touch-control display panel, comprise the infrabasal plate, upper substrate and the polaroid that stack gradually, described touch-control display panel also comprises flexible PCB, the first link that described flexible PCB is provided with ground path and is communicated with described ground path, described first link and described polaroid are electrically connected.
Wherein, described flexible PCB also comprises the second link be communicated with described ground path, and described second link and described infrabasal plate fit to be electrically connected, and described first link and described polaroid fit to be electrically connected.
Wherein, described infrabasal plate comprises the first extension, described upper substrate is relative to the inside indentation of described infrabasal plate, make described first extending part in the periphery of described upper substrate, described flexible PCB also comprises principal part and auxiliary portion, described ground path is arranged in described principal part and auxiliary portion, described second link is arranged at the edge of described principal part, described second link is electrically connected at described first extension, described auxiliary portion extends to described polaroid, described first link is arranged at described auxiliary portion, described first link is electrically connected at described polaroid, described polaroid has electric conductivity.
Wherein, the width in described auxiliary portion is less than the width of described principal part, and described width is parallel to the size on the direction being provided with the edge of described second link of principal part.
Wherein, described touch-control display panel also comprises black matrix and cover plate, described black arranged in matrix is in four peripheries on the surface towards described infrabasal plate of described upper substrate, described cover plate fits in the side being provided with described first link of described polaroid by optical cement layer, described first link is between described cover plate and described polaroid, the attaching precision cutting precision-described polaroid of the coating accuracy-described polaroid of the width-described optical cement layer of black matrix described in distance f=between the edge of the edge away from described first extension of described first link and close described first extension of described polaroid, the width of described black matrix refers to the distance between the edge at the center towards described upper substrate of described black matrix and the outer ledge of black matrix.
Wherein, the distance f between the edge of the edge away from described first extension of described first link and close described first extension of described polaroid is in the scope of 0.7mm to 0.9mm.
Wherein, described first link is crimped on described polaroid by described cover plate.
Wherein, described first link fits in described polaroid by conducting resinl.
Wherein, described first extension is provided with packed layer, and described packed layer is covered on described first link, described auxiliary portion to be arranged on described packed layer and to extend to described polaroid.
Wherein, between described auxiliary portion and described packed layer, be provided with adhesive-layer, between described first link and the surface of described polaroid, be provided with conductive adhesive layer.
Compared with prior art, technical scheme of the present invention at least has following beneficial effect:
In technical scheme of the present invention, because described touch-control display panel comprises flexible PCB, and the first link that described flexible PCB is provided with ground path and is communicated with described ground path, described first link and described polaroid are electrically connected, therefore, described polaroid is electrically connected on the ground wire of described flexible PCB by described first link, effectively the electrostatic on described polaroid and the upper substrate adjacent with described polaroid (can be colored optical filtering substrates) can be exported to flexible PCB, thus prevent electrostatic interference touching signals;
In addition, described first link due to what be electrically connected with described polaroid, therefore, without the need to a glue, first link of described flexible PCB can be connected on described polaroid again in the operation of laminating cover plate, thus avoid tearing up when selecting glue the diaphragm of described polaroid and introduce impurity, and diaphragm described in normal flow must remove in the operation of laminating cover plate, cover plate is attached on described polaroid, in this process described first link is placed on described polaroid, pressing or fit on polaroid together with described cover plate, without the need to other operation, eliminate a glue process, simplify the manufacture craft of described touch-control display panel, and impurity can not be incorporated on described polaroid in other operation, avoid the laminating effect of impurity effect cover plate and then affect display effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other form of distortion can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic top plan view of touch-control display panel in first embodiment of the invention;
Fig. 2 is the cross-sectional schematic along cutting line A-A of Fig. 1;
Fig. 3 Fig. 3 is the cross-sectional schematic of the touch-control display panel after cover plate of fitting in first embodiment of the invention; And
Fig. 4 is the cross-sectional schematic of touch-control display panel in second embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See also Fig. 1 and Fig. 2, Fig. 1 is the schematic top plan view of touch-control display panel in first embodiment of the invention; Fig. 2 is the cross-sectional schematic along cutting line A-A of Fig. 1.In the present embodiment (the first embodiment), touch-control display panel comprises the infrabasal plate 100, upper substrate 200 and the polaroid 300 that stack gradually, described upper substrate 200 can be colored optical filtering substrates or array base palte, when described upper substrate 100 is colored optical filtering substrates, described infrabasal plate 100 is array base paltes, when described upper substrate 100 is array base paltes, described infrabasal plate 100 is colored optical filtering substrates.Described infrabasal plate 100 comprises the first extension 110, described upper substrate 200 is relative to the inside indentation of described infrabasal plate 100, described first extension 110 is made to be positioned at the periphery of described upper substrate 200, namely described first extension 110 of described infrabasal plate 100 is exposed, described inside indentation is the middle part indentation pointing to described touch-control display panel.
Described touch-control display panel also comprises flexible PCB 400, described flexible PCB 400 comprises principal part 410, auxiliary portion 420 and ground path 430, described ground path 430 is arranged in described principal part 410 and auxiliary portion 420, and namely described ground path 430 is across described principal part 410 and auxiliary portion 420.One lateral edges of described principal part 410 is provided with the second link 411, and described second link 411 is electrically connected at described first extension 110 of described infrabasal plate 100, specifically can be electrically connected at the edge in the outer part of described first extension 110.Described electric connection can be bonded by conducting resinl, also can be to be connected by the mode of welding, or other connected mode.The direction of described auxiliary portion 420 from the edge being provided with the second link 411 of described principal part 410 to described polaroid 300 extends, until extend to the upper surface of described polaroid 300.One end of the close described polaroid in described auxiliary portion 420 is provided with the first link 421, and namely the end in described auxiliary portion 420 is provided with the first link 421, that is the one end away from described principal part 410 in described auxiliary portion 420 is provided with the first link 421.Described first link 421 is electrically connected at the surface of described polaroid 300.
Described polaroid 300 has electric conductivity.The electric conductivity of described polaroid 300 refers in polaroid 300 and is provided with conductive compositions, conductive compositions is provided with between the film layer structure being included in polaroid 300, or the rete with conductive compositions is set at the upper surface of polaroid 300, and conductive compositions is exposed to the installing zone of polaroid 300.Described conductive compositions has 10
6to 10
9the impedance of the order of magnitude, therefore, the effect with shielding electrostatic simultaneously can not undesired signal.
Described first link 421 is connected with described ground path 430, and as previously described, described first link 421 is connected with described polaroid 300, therefore, electrostatic on described polaroid 300 and described upper substrate 200 can export on the ground path 430 of described flexible PCB 400, and then imports the earth terminal (scheming not shown) of flexible PCB 400.
Refer to Fig. 3, Fig. 3 is the cross-sectional schematic of the touch-control display panel after cover plate of fitting in first embodiment of the invention.Described touch-control display panel also comprises black matrix 700 and cover plate 900, described black matrix 700 is arranged at four peripheries on the surface towards described infrabasal plate 100 of described upper substrate 200, sealed plastic box 800 is also provided with, in order to described upper substrate 200 and described infrabasal plate 100 to be bonded between described black matrix 700 and described infrabasal plate 100, described cover plate 900 fits in the side being provided with described first link 421 of described polaroid 300 by optical cement layer 910, described first link 421 is between described cover plate 900 and described polaroid 300, the attaching precision cutting precision-described polaroid of the coating accuracy-described polaroid of the width-described optical cement layer of black matrix described in distance f=between the edge of the edge away from described first extension 110 of described first link 421 and close described first extension 110 of described polaroid 300, such as, when the width of described black matrix 700 is 2.5mm, the coating accuracy of described optical cement layer 910 is 1.6mm, when the attaching precision sum cutting precision and described polaroid of described polaroid is 0.16mm, distance f=2.5mm-1.6mm-0.16mm=0.84mm between the edge of the edge of described first extension 110 and close described first extension 110 of described polaroid 300.Distance f between the edge of the edge of described first extension 110 and close described first extension 110 of described polaroid 300, that is the overlapping widths of described first link 421 and described polaroid 300.The width of described black matrix refers to the distance between the edge at the center towards described upper substrate 200 of described black matrix and the outer ledge of black matrix.
When f is too large, described optical cement layer 910 cannot flow to the edge of described polaroid 300 when excessive glue, makes the section of appearance between described optical cement layer 910 and described polaroid 300 poor, is unfavorable for the laminating of cover plate 900; When f is too little, described optical cement layer 910 can flow to when excessive glue outside described polaroid 300 edge, causes bad product.In an embodiment of the present embodiment, preferably, the distance f between the edge of the edge away from described first extension of described first link and close described first extension of described polaroid can in the scope of 0.7mm to 0.9mm.
Further, the width in described auxiliary portion 420 is less than the width of described principal part 410.The width in described auxiliary portion 420, preferably in the scope of 1.5mm to 2.5mm, so, is conducive to the dirigibility increasing described auxiliary portion 420, and reduces taking up room of described auxiliary portion 420.Described width is parallel to the size on the direction being provided with the edge of described second link of principal part.
In the present embodiment, described first extension 110 is provided with packed layer 111, and described packed layer 111 is covered on described first link 421, described auxiliary portion 421 is arranged on described packed layer 111 and to the direction at described polaroid 300 place and extends.
Described packed layer 111 has two effects, and one is shield to the second splicing ear 410 being connected to described first extension 110, prevents it to be exposed in air oxidized, and prevents its stressed easy stripping; Another is as matting layer, for described first extension 110 is crossed in described auxiliary portion 420, and extends to described polaroid 300 and lays the groundwork, and prevents described auxiliary portion 420 herein due to height section difference and is lost.
In the present embodiment, described auxiliary portion 420 along the packed layer 111 on described first extension 110, described upper substrate 200 end face described in the end face of polaroid 300 extend to the surface of described polaroid 300, and described first link 421 in described auxiliary portion 420 is fixed on the surface of described polaroid 300.This process can be, in the operation of laminating cover plate 900, described first link 421 is positioned on described polaroid 300, and the optical cement of fitting required for cover plate is dripped around the surface of described polaroid 300, the first link 421, cover plate contraposition is accurately put in above described polaroid 300 and described first link 421, by crimping, described cover plate and described first link 421 are fixed on described polaroid 300 in the lump, make described first link 421 and described installing zone close contact.In this fixed form, without viscose glue between the packed layer 111 of described auxiliary portion 420 and described first extension 110, i.e. do not fit between the packed layer 111 of described auxiliary portion 420 and described first extension 110.
In the present embodiment, because the flexible PCB of described touch-control display panel comprises principal part, auxiliary portion and ground path, described ground path is arranged in described principal part and auxiliary portion, the edge of described principal part is provided with the second link, described second link is electrically connected at described first extension, described auxiliary portion is extended to described polaroid by the edge being provided with the second link of described principal part, one end of the close described polaroid in described auxiliary portion is provided with the first link, described first link is electrically connected at the surface of described polaroid, described polaroid has electric conductivity, described first link is connected with described ground path, therefore, described polaroid is electrically connected on the ground wire of described flexible PCB by described first link, effectively the electrostatic on described polaroid and the upper substrate adjacent with described polaroid can be exported to flexible PCB, thus prevent electrostatic interference touching signals.
In addition, described first link due to what be electrically connected with described polaroid, therefore, without the need to a glue, first link of described flexible PCB can be connected on described polaroid again in the operation of laminating cover plate, thus avoid tearing up when selecting glue the diaphragm of described polaroid and introduce impurity, and diaphragm described in normal flow must remove in the operation of laminating cover plate, cover plate is attached on described polaroid, in this process described first link is placed on described polaroid, pressing or fit on polaroid together with described cover plate, without the need to other operation, eliminate a glue process, simplify the manufacture craft of described touch-control display panel, and impurity can not be incorporated on described polaroid in other operation, avoid the laminating effect of impurity effect cover plate and then affect display effect.
Refer to Fig. 4, figure Fig. 4 is the schematic cross-section of touch-control display panel in second embodiment of the invention.The structure of the touch-control display panel in the present embodiment (the second embodiment) is substantially identical with the structure of the touch-control display panel described in the first embodiment, difference is: in the present embodiment, be provided with adhesive-layer 500 between the described auxiliary portion 420 of the flexible PCB 400 of described touch-control display panel and described packed layer 111, between described first link 421 and described polaroid 300, be provided with conductive adhesive layer 600.
In the present embodiment, owing to being provided with adhesive-layer 500 between described auxiliary portion 420 and described packed layer 111, thus the surface being fixed on described packed layer 111 is pasted in described auxiliary portion 420; In addition, conductive adhesive layer 600 is provided with between described first link 421 and described polaroid 300, thus connect end 421 by described second and be electrically connected on the surface (or installing zone of polaroid 300) of described polaroid 300, prevent auxiliary portion 420 movable, the stability of the electric connection of the described polaroid 300 of further guarantee and earth terminal, meanwhile, the operation being also conducive to laminating cover plate is carried out smoothly.
The present invention also provides a kind of touch control display apparatus, and described touch control display apparatus comprises the touch-control display panel described in above any embodiment.Such as, described touch control display apparatus can be the electronic products such as mobile phone, panel computer, watch-dog.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The amendment done within any spirit at above-mentioned embodiment and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in this technical scheme.
Claims (10)
1. a touch-control display panel, comprise the infrabasal plate, upper substrate and the polaroid that stack gradually, it is characterized in that, described touch-control display panel also comprises flexible PCB, the first link that described flexible PCB is provided with ground path and is communicated with described ground path, described first link and described polaroid are electrically connected.
2. touch-control display panel as claimed in claim 1, it is characterized in that, described flexible PCB also comprises the second link be communicated with described ground path, and described second link and described infrabasal plate fit to be electrically connected, and described first link and described polaroid fit to be electrically connected.
3. touch-control display panel as claimed in claim 1, it is characterized in that, described infrabasal plate comprises the first extension, described upper substrate is relative to the inside indentation of described infrabasal plate, make described first extending part in the periphery of described upper substrate, described flexible PCB also comprises principal part and auxiliary portion, described ground path is arranged in described principal part and auxiliary portion, described second link is arranged at the edge of described principal part, and be electrically connected at described first extension, described auxiliary portion extends to described polaroid, described first link is arranged at described auxiliary portion, and be electrically connected at described polaroid.
4. touch-control display panel as claimed in claim 3, it is characterized in that, the width in described auxiliary portion is less than the width of described principal part, and described width is parallel to the size on the direction being provided with the edge of described second link of principal part.
5. touch-control display panel as claimed in claim 3, it is characterized in that, described touch-control display panel also comprises black matrix and cover plate, described black arranged in matrix is in four peripheries on the surface towards described infrabasal plate of described upper substrate, described cover plate fits in the side being provided with described first link of described polaroid by optical cement layer, described first link is between described cover plate and described polaroid, the attaching precision cutting precision-described polaroid of the coating accuracy-described polaroid of the width-described optical cement layer of black matrix described in distance f=between the edge of the edge away from described first extension of described first link and close described first extension of described polaroid, the width of described black matrix refers to the distance between the edge at the center towards described upper substrate of described black matrix and the outer ledge of black matrix.
6. touch-control display panel as claimed in claim 3, it is characterized in that, the distance f between the edge of the edge away from described first extension of described first link and close described first extension of described polaroid is in the scope of 0.7mm to 0.9mm.
7. touch-control display panel as claimed in claim 3, it is characterized in that, described first link is crimped on described polaroid by described cover plate.
8. the touch-control display panel as described in any one of claim 1 to 7, is characterized in that, described first link fits in described polaroid by conducting resinl.
9. the touch-control display panel as described in any one of claim 3 to 7, it is characterized in that, described first extension is provided with packed layer, and described packed layer is covered on described first link, described auxiliary portion to be arranged on described packed layer and to extend to described polaroid.
10. touch-control display panel as claimed in claim 9, is characterized in that, be provided with adhesive-layer between described auxiliary portion and described packed layer, be provided with conductive adhesive layer between described first link and described polaroid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610072086.8A CN105573557B (en) | 2016-02-02 | 2016-02-02 | Touch-control display panel and touch control display apparatus |
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| CN201610072086.8A CN105573557B (en) | 2016-02-02 | 2016-02-02 | Touch-control display panel and touch control display apparatus |
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| WO2020118867A1 (en) * | 2018-12-12 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Touch display device and preparation method therefor |
| WO2021243692A1 (en) * | 2020-06-05 | 2021-12-09 | 京东方科技集团股份有限公司 | Display device and manufacturing method therefor |
| GB2605316A (en) * | 2020-06-05 | 2022-09-28 | Boe Technology Group Co Ltd | Display device and manufacturing method therefor |
| US12041720B2 (en) | 2020-06-05 | 2024-07-16 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display device and manufacturing method thereof |
| CN112256151A (en) * | 2020-10-28 | 2021-01-22 | 上海天马有机发光显示技术有限公司 | Touch control display device |
| CN112256151B (en) * | 2020-10-28 | 2024-02-13 | 武汉天马微电子有限公司 | touch display device |
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