CN111309182A - Touch display device and electronic equipment - Google Patents
Touch display device and electronic equipment Download PDFInfo
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- CN111309182A CN111309182A CN202010113960.4A CN202010113960A CN111309182A CN 111309182 A CN111309182 A CN 111309182A CN 202010113960 A CN202010113960 A CN 202010113960A CN 111309182 A CN111309182 A CN 111309182A
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- display device
- electrode layer
- touch display
- main body
- cover plate
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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
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- 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
- G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
-
- 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
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to a touch display device and electronic equipment. The touch display device includes: the cover plate is provided with a visual area and a shielding area, and the shielding area is arranged around the visual area; the touch sensing module comprises a flexible substrate and a first electrode layer, wherein the flexible substrate comprises a main body part and two bent parts, the bent parts and the main body part form an included angle, the projection part of the main body part on the surface of the cover plate is positioned in the visible area, and the first electrode layer is arranged on the main body part and attached to the cover plate; and the two first grounding wires are respectively arranged on the outer surface of one of the bent parts and are adjacent to the first electrode layer. According to the touch display device, when the edge of the cover plate is subjected to electrostatic impact, charges can be led into the ground through the first grounding wire, the first electrode layer of the touch sensing module is prevented from being damaged due to the electrostatic impact, and the anti-static Electricity (ESD) impact capability of the touch display device is effectively improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a touch display device and an electronic apparatus.
Background
The structural design of the touch display screen in the prior art has the following defects: the detection electrode of the touch module is easily damaged by electrostatic impact from the edge of the cover plate, and normal use of the touch display screen is affected.
Disclosure of Invention
Accordingly, it is desirable to provide a touch display device and an electronic apparatus, which are directed to the problem that the detection electrode of the conventional touch module is easily subjected to electrostatic impact from the edge of the cover plate.
A touch display device, comprising:
the cover plate is provided with a visual area and a shielding area, and the shielding area is arranged around the visual area;
the touch sensing module comprises a flexible substrate and a first electrode layer, wherein the flexible substrate comprises a main body part and two bent parts, the bent parts and the main body part form an included angle, the projection part of the main body part on the surface of the cover plate is positioned in the visible area, and the first electrode layer is arranged on the main body part and attached to the cover plate; and
and the two first grounding wires are respectively arranged on the outer surface of one of the bent parts and are adjacent to the first electrode layer.
According to the touch display device, the bending part of the flexible substrate is provided with the grounding wire, the grounding wire is located below the cover plate of the touch display device, when the edge of the cover plate is subjected to electrostatic impact, electric charges can be led into the ground through the first grounding wire, the first electrode layer of the touch sensing module is prevented from being damaged due to electrostatic impact, and the anti-static Electricity (ESD) impact capacity of the touch display device is effectively improved.
In one embodiment, the touch display device further includes a second ground line disposed at one end of the main body portion and between the two first ground lines.
In one embodiment, a projection of the first grounding line and the first electrode layer on the surface of the cover plate forms a distance d, and d is more than or equal to 10 μm and less than or equal to 50 μm.
In one embodiment, the first electrode layer includes a plurality of longitudinal sensing electrodes, and the first ground line and the longitudinal sensing electrodes extend in the same direction.
In one embodiment, the touch display device further includes a protection layer covering the first ground line and connected to the first electrode layer.
In one embodiment, the touch sensing module further includes a second electrode layer, the second electrode layer includes a plurality of lateral sensing electrodes and leads, the lateral sensing electrodes are disposed on the main body portion and partially extend to the bending portion, and the leads are disposed at ends of the lateral sensing electrodes.
In one embodiment, the touch display device further includes a liquid crystal display module, the liquid crystal display module is located in an accommodation space formed by the main body portion and the bending portion, and one end of the bending portion, which is far away from the main body portion, extends to the back of the liquid crystal display module.
In one embodiment, the second electrode layer is a metal mesh, a silver nanowire.
In one embodiment, a projection of the first grounding line on the surface of the cover plate is located in the shielding area.
An electronic device comprises the touch display device.
Drawings
FIG. 1 is a cross-sectional view of a touch display device according to an embodiment;
FIG. 2 is a bottom view of the touch display device shown in FIG. 1 with the touch sensing module in an expanded state;
fig. 3 is a top view of the touch sensing module in the touch display device shown in fig. 1 in an expanded state.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a touch display device 100 includes a cover plate 10, a touch sensing module 20 and a liquid crystal display module 30 stacked in sequence. A first Optical Adhesive layer 40 is disposed between the cover plate 10 and the touch sensing module 20, a second Optical Adhesive layer 50 is disposed between the touch sensing module 20 and the liquid crystal display module 30, and the first Optical Adhesive layer 40 and the second Optical Adhesive layer 50 are both made of transparent Optical Adhesive (OCA), which has better Adhesive property and light transmittance.
The cover plate 10 includes a visible region and a mask region disposed around the visible region. The periphery of the cover plate 10 is coated with an ink layer to form the shielding region.
The touch sensing module 20 includes a flexible substrate 21, a first electrode layer 23 and a second electrode layer 22. In some embodiments, the first electrode layer 23 and the second electrode layer 22 are respectively formed on two sides of the flexible substrate 21 to avoid mutual interference of electrical signals on the first electrode layer 23 and the second electrode layer 22. In other embodiments, the first electrode layer 23 and the second electrode layer 22 can be disposed on the same side of the flexible substrate 21, wherein the first electrode layer 23 and the second electrode layer 22 are insulated from each other.
Referring to fig. 2, the second electrode layer 22 includes a plurality of lateral sensing electrodes 221 and leads 222, and the leads 222 are disposed at ends of the lateral sensing electrodes 221. The leads 222 are generally made of an opaque metal material, and in the prior art, an ink layer is applied to the cover plate 10 at the area corresponding to the leads 222 to shield the leads 222. Since there is an error inevitably existing in the process of attaching the cover plate 10 and the touch sensing module 20, the ink layer needs to have a sufficient width to ensure that the leads 222 are completely shielded. However, with the advancement of technology, the design of narrow bezel panels is becoming the mainstream trend, and designers want larger viewing area for the same display device size.
The invention provides a folding touch sensing module 20(folding sensor), which has the following specific structure: the flexible substrate 21 includes a main body portion 211 and a bending portion 212 disposed at an included angle, the main body portion 211 corresponds to the visible region of the cover plate 10, the main body portion 211 includes a first surface 211a and a second surface 211b opposite to each other, the first surface 211a faces the liquid crystal display module 30, and the second surface 211b faces the cover plate 10. The second electrode layer 22 is disposed on the first surface 211a of the main body portion 211 and covers the bending portion 212, and the first electrode layer 23 is disposed on the second surface 211b of the main body portion 211. Referring to fig. 2 and 3, the region a corresponds to the main body portion 211, and the region B corresponds to a portion where the bending portion 212 is attached to the side surface of the liquid crystal display module 30.
In the touch display device 100, the touch sensing module 20 employs the flexible substrate 21 as a base, the flexible substrate 21 can bend along the side of the liquid crystal display module 30, and the second electrode layer 22 disposed on the flexible substrate 21 bends accordingly, so that the lead 222 included in the second electrode layer 22 is located on the side or the back of the liquid crystal display module 30, the width of the ink layer on the cover plate 10 can be effectively reduced, and the narrow frame design is realized. The second electrode layer 22 is a Metal mesh (Metal mesh) or a nano silver wire, and can be bent along with the flexible substrate 21 without breaking.
In order to ensure that the flexible substrate 21 does not break during bending, the flexible substrate 21 is made of a flexible material, such as Polycarbonate (PC), Polyimide (PI), Polyethylene naphthalate (PEN), Polyethylene terephthalate (PET), or cyclic olefin Copolymer (COP).
In an embodiment, referring to fig. 1, one end of the bending portion 212 away from the main body portion 211 extends to a surface of the liquid crystal display module 30 away from the main body portion 211, and correspondingly, the lead 222 of the second electrode layer 22 is located on a back surface of the liquid crystal display module 30. Since the liquid crystal display module 30 can shield the lead 222, the width of the ink layer is effectively reduced, and narrow-frame or even frameless design can be realized.
In some embodiments, the number of the bending portions 212 is 2, and the two bending portions 212 are respectively disposed at two sides of the main body portion 211. The two ends of the horizontal sensing electrode 221 are connected to the leads 222, and the arrangement of the 2 bending portions 212 reduces the width of the ink layer on the two sides of the cover plate 10. In other embodiments, the number of the bending portions 212 is 1, and at this time, the two side frames of the touch display device 100 are designed asymmetrically.
Further, the transverse sensing electrode 221 is disposed on the main body portion 211 of the flexible substrate 21 and partially extends to the bending portion 212, so as to ensure that the connection point between the transverse sensing electrode 221 and the lead 222 is located on the side surface or the back surface of the liquid crystal display module 30.
Referring to fig. 2 and 3, the first electrode layer 23 includes a plurality of longitudinal sensing electrodes 231 and leads 232 electrically connected to the longitudinal sensing electrodes 231. The horizontal sensing electrodes 221 of the second electrode layer 22 are arranged along the X-axis direction, the vertical sensing electrodes 231 are arranged along the Y-axis direction, and the projections of the horizontal sensing electrodes 221 and the vertical sensing electrodes 231 on the visible region of the cover plate 10 are overlapped. When a user touches the touch display device 100, due to the existence of an electric field in a human body, a coupling capacitance is formed between a finger and the horizontal sensing electrode 221 and the vertical sensing electrode 231 in the touch display device 100; due to the capacitance change of the touch points, induced currents flowing to the touch points appear in the horizontal sensing electrode 221 and the vertical sensing electrode 231, and the positions of the touch points can be accurately calculated through related calculation, so as to control the display content of the liquid crystal display module 30.
Referring to fig. 1 and fig. 3, the touch display device 100 further includes two first ground lines 60, the first ground lines 60 are disposed on the outer surface of the bending portion 212 and are adjacent to the first electrode layer 21, that is, the first ground lines 60 are disposed on a side of the bending portion 212 departing from the second electrode layer 22. The first ground line 60 is disposed on the area of the flexible substrate 21 adjacent to the first electrode layer 23, and when the two side edges of the cover plate 10 of the touch display device 100 are subjected to electrostatic impact, charges can be introduced to the ground through the first ground line 60, so as to prevent the first electrode layer 23 from being damaged, and effectively improve the electrostatic impact (ESD) resistance of the touch display device 100.
The projection of the first grounding line 60 on the surface of the cover plate 10 is located in the shielding region of the cover plate 10 to shield the first grounding line 60. The masked area is the area on which the ink layer is applied to the cover plate 10. The first grounding line 60 is disposed at the bending portion 212 of the flexible substrate 21, that is, the first grounding line 60 is disposed at the side of the liquid crystal display module 30, so that the width of the ink layer is greater than or equal to the thickness of the first grounding line 60, which is beneficial to further reducing the width of the ink layer on the cover plate 10.
The first ground line 60 and the longitudinal sensing electrode 231 extend in the same direction to effectively protect the longitudinal sensing electrode 231. The first grounding line 60 covers the portion of the bending portion 212 attached to the liquid crystal display module 30, i.e. the width of the first grounding line 60 is equal to the thickness h of the flexible substrate 21. The width of the first ground line 60 is larger, so as to cover a region of the side surface of the touch display device 100, which may be impacted by static electricity, and the anti-static impact capability is better.
The first grounding line 60 and the first electrode layer 23 form a distance d, wherein d is more than or equal to 10 mu m and less than or equal to 50 mu m. The cover plate 10 is attached to the side of the flexible substrate 21 where the first electrode layer 23 is disposed. The surface of the cover plate 10 is divided into a visible area and a shielding area, the visible area is located in the center of the cover plate 10, the shielding area is located on two sides of the visible area, specifically, the area of the cover plate 10 on which the ink layer is located is the shielding area, and the projection of the first grounding line 60 on the surface of the cover plate 10 is located in the shielding area. When the cover plate 10 and the touch sensing module 20 are attached to each other, the visible area of the cover plate 10 needs to be aligned with the area where the longitudinal sensing electrode 231 of the first electrode layer 23 is located, and the shielding area of the cover plate 10 needs to be aligned with the area where the first ground line 60 is located. The distance d between the first ground line 60 and the longitudinal sensing electrode 231 is not less than 10 μm, so that the difficulty in attaching the cover plate 10 to the touch display module 20 is reduced, and the first ground line 60 and the longitudinal sensing electrode 231 are ensured to be insulated from each other. The distance between the first ground line 60 and the longitudinal sensing electrode is not more than 50 μm, so as to avoid a touch blind area at the transition between the visible area and the shielding area.
Referring to fig. 3, the touch display device 100 further includes a second ground line 80, and the second ground line 80 is disposed at one end of the main body portion 211 and located between the two first ground lines 60. When the top of the cover plate 10 of the touch display device 100 is subjected to electrostatic shock, charges can be conducted to the ground through the second ground line 80, so that the end of the first electrode layer 23 is prevented from being damaged, and the electrostatic shock resistance (ESD) capability of the touch display device 100 is effectively improved.
Referring to fig. 1, the touch display device 100 further includes a protection layer 70, and the protection layer 70 covers the first ground line 60 and is connected to the first electrode layer 23 to prevent the first electrode layer 23 and the first ground line 60 from being oxidized or corroded.
The assembly process of the touch display device 100 is as follows:
firstly, a layer of transparent optical adhesive is coated on the surface of the liquid crystal display module 30, and then the relative positions of the touch sensing module 20 and the liquid crystal display module 30 are adjusted, so that the symmetry axis of the touch sensing module 20 coincides with the symmetry axis of the liquid crystal display module 30. And then, the side of the touch sensing module 20 provided with the second electrode layer 22 is attached to the liquid crystal display module 30, and the touch sensing module 20 is bent along the liquid crystal display module 30, so that the touch sensing module 20 is attached to the side and the back of the liquid crystal display module 30, wherein the first grounding wire 60 arranged on the flexible substrate 21 of the touch sensing module 20 is located on the side of the liquid crystal display module 30. Finally, the cover plate 10 is attached to a side of the touch sensing module 20 away from the liquid crystal display module 30.
The present invention further provides an electronic device including the touch display device 100, which includes all technical features of the touch display device 100, and thus has an anti-static impact capability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A touch display device, comprising:
the cover plate is provided with a visual area and a shielding area, and the shielding area is arranged around the visual area;
the touch sensing module comprises a flexible substrate and a first electrode layer, wherein the flexible substrate comprises a main body part and two bent parts, the bent parts and the main body part form an included angle, the projection part of the main body part on the surface of the cover plate is positioned in the visible area, and the first electrode layer is arranged on the main body part and attached to the cover plate; and
and the two first grounding wires are respectively arranged on the outer surface of one of the bent parts and are adjacent to the first electrode layer.
2. The touch display device according to claim 1, further comprising a second ground line provided at one end of the main body portion between the two first ground lines.
3. The touch display device of claim 1, wherein a projection of the first ground line and the first electrode layer on the surface of the cover plate forms a distance d, and d is greater than or equal to 10 μm and less than or equal to 50 μm.
4. The touch display device of claim 1, wherein the first electrode layer comprises a plurality of longitudinal sensing electrodes, and the first ground line and the longitudinal sensing electrodes extend in the same direction.
5. The touch display device according to claim 1, further comprising a protective layer covering the first ground line and connected to the first electrode layer.
6. The touch display device of claim 1, wherein the touch sensing module further comprises a second electrode layer, the second electrode layer comprises a plurality of lateral sensing electrodes and leads, the lateral sensing electrodes are disposed on the main body and partially extend to the bending portion, and the leads are disposed at ends of the lateral sensing electrodes.
7. The touch display device according to claim 6, further comprising a liquid crystal display module, wherein the liquid crystal display module is located in an accommodating space defined by the main body portion and the bending portion, and one end of the bending portion, which is away from the main body portion, extends to a back surface of the liquid crystal display module.
8. The touch display device of claim 6, wherein the second electrode layer is a metal mesh or a silver nanowire.
9. The touch display device of claim 1, wherein a projection of the first ground line on the surface of the cover plate is located in the shielding area.
10. An electronic device comprising the touch display device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010113960.4A CN111309182A (en) | 2020-02-24 | 2020-02-24 | Touch display device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010113960.4A CN111309182A (en) | 2020-02-24 | 2020-02-24 | Touch display device and electronic equipment |
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| CN111309182A true CN111309182A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010113960.4A Pending CN111309182A (en) | 2020-02-24 | 2020-02-24 | Touch display device and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113031818A (en) * | 2021-03-24 | 2021-06-25 | 业成科技（成都）有限公司 | Touch display module and electronic equipment |
| CN114550583A (en) * | 2022-01-19 | 2022-05-27 | 业成科技（成都）有限公司 | Display module, touch display module and electronic equipment |
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| US20160357079A1 (en) * | 2015-06-05 | 2016-12-08 | Innolux Corporation | Touch display panel and touch display device using the same |
| CN107491225A (en) * | 2017-10-19 | 2017-12-19 | 业成科技（成都）有限公司 | Touch control display apparatus and its contact panel |
| CN107526478A (en) * | 2017-09-08 | 2017-12-29 | 业成科技（成都）有限公司 | Touch control display apparatus |
| CN107688251A (en) * | 2016-08-04 | 2018-02-13 | 三星显示有限公司 | Liquid crystal display |
| CN109521905A (en) * | 2018-10-19 | 2019-03-26 | 业成科技（成都）有限公司 | Touch-control display panel and its manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551383A (en) * | 2014-09-02 | 2016-05-04 | 三星电子株式会社 | CURVED DISPLAY AND movable ELECTRONIC DEVICE INCLUDING THE SAME |
| US20160357079A1 (en) * | 2015-06-05 | 2016-12-08 | Innolux Corporation | Touch display panel and touch display device using the same |
| CN107688251A (en) * | 2016-08-04 | 2018-02-13 | 三星显示有限公司 | Liquid crystal display |
| CN107526478A (en) * | 2017-09-08 | 2017-12-29 | 业成科技（成都）有限公司 | Touch control display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113031818A (en) * | 2021-03-24 | 2021-06-25 | 业成科技（成都）有限公司 | Touch display module and electronic equipment |
| CN114550583A (en) * | 2022-01-19 | 2022-05-27 | 业成科技（成都）有限公司 | Display module, touch display module and electronic equipment |
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