CN109542270B - Touch substrate and touch display device - Google Patents
Touch substrate and touch display device Download PDFInfo
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- CN109542270B CN109542270B CN201811389654.2A CN201811389654A CN109542270B CN 109542270 B CN109542270 B CN 109542270B CN 201811389654 A CN201811389654 A CN 201811389654A CN 109542270 B CN109542270 B CN 109542270B
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- touch
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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
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention relates to a touch substrate, which comprises a flexible substrate, wherein the flexible substrate comprises: the touch sensing area is used for setting a touch sensing structure; a binding connection region for connecting with a main circuit board of the display device; and the first bendable area is positioned between the touch sensing area and the binding connection area, and is provided with a signal wire for transmitting a signal of the touch sensing structure to the touch circuit chip. The invention has the beneficial effects that: the first bendable area on the flexible substrate base plate is provided with a signal line for transmitting the signal of the touch sensing structure to the touch circuit chip, a flexible circuit board is not needed to be arranged, the reliability of the touch function is enhanced due to the integrated arrangement, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of liquid crystal product manufacturing, in particular to a touch substrate and a touch display device.
Background
Currently, an OLED (Organic Light-Emitting Diode) display module is widely applied to various electronic products as a display component of an electronic device, and with the development of display technologies and increasing demands of users, a full-screen mobile phone is more and more favored by users. The common full-screen display module is designed by adopting a pad bonding technology, a touch substrate is connected with a main circuit board through a flexible circuit board, and a sensor on the touch substrate transmits a signal to a touch circuit chip on the main circuit board through the flexible circuit board arranged in a bent mode. Although the lower frame can be reduced to a certain extent by the method, the reduction of the lower frame is not obvious due to the limitation of the connection process of the flexible circuit board; and because one end of the flexible circuit board needs to be bound and connected to the touch substrate, the binding connection area of the flexible substrate can be subjected to certain stress, and the binding connection area of the flexible substrate is actually an ACF (Anisotropic Conductive Film) adhesive, so that the reliability of the touch function is difficult to avoid being affected.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a touch substrate and a touch display device, which solve the problem that a bonding area of a flexible substrate is unstable due to stress when a touch signal is transmitted through a flexible circuit board disposed by bending.
In order to achieve the purpose, the invention adopts the technical scheme that: a touch substrate comprising a flexible substrate, the flexible substrate comprising:
the touch sensing area is used for setting a touch sensing structure;
a binding connection region for connecting with a main circuit board of the display device;
and the first bendable area is positioned between the touch sensing area and the binding connection area, and is provided with a signal wire for transmitting a signal of the touch sensing structure to the touch circuit chip.
Further, the touch circuit chip is disposed in the bonding area, and an orthographic projection of the touch circuit chip on the bonding area completely falls within the bonding area.
Further, a binding disc is arranged on the binding connection area.
Furthermore, the touch sensing area is of a rectangular structure, and the first bendable area and the binding connection area are strip-shaped structures formed by extending a part of one side edge of the rectangular structure.
The invention also provides a touch display device, which comprises a display module and the touch substrate.
Furthermore, the display module comprises a display panel positioned on the first side of the touch substrate and a polarizer positioned on the second side of the touch substrate, which is opposite to the first side.
Further, the display panel includes:
a first area correspondingly connected with the touch sensing area of the touch substrate;
the second bendable region corresponds to the first bendable region;
and the second area is in binding connection with the main circuit board of the display device, and the position of the second area corresponds to the position of the binding connection area.
Furthermore, an insulating protection layer is arranged between the display panel and the touch substrate.
Further, the polarizer and the touch substrate are connected through optical cement.
Furthermore, a heat dissipation film is arranged on one side, away from the touch substrate, of the second area of the display panel.
The beneficial effects of the invention are: the first bendable area on the flexible substrate base plate is provided with a signal line for transmitting the signal of the touch sensing structure to the touch circuit chip, a flexible circuit board is not needed to be arranged, the reliability of the touch function is enhanced due to the integrated arrangement, and the cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a prior art display device;
FIG. 2 is a schematic view of a touch substrate structure according to the present embodiment;
FIG. 3 is a schematic view of a rear structure of the display module in this embodiment;
fig. 4 is a schematic structural diagram of the display device in this embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
As shown in fig. 1, the existing touch substrate is connected with the main circuit board through the flexible circuit board 30, the sensor on the touch substrate 10 transmits a signal to the touch circuit chip on the main circuit board through the flexible circuit board 30 set by bending, the flexible circuit board 30 includes a first binding connection area bound and connected with the sensor on the touch substrate 10, and a second binding connection area bound and connected with the main circuit board, the flexible circuit board 30 is bent to make the first binding connection area and the second binding connection area all receive certain stress, thereby easily causing the connection instability of the first binding connection area and the second binding connection area, thereby affecting the reliability of the touch function, and due to the limitation of the flexible circuit board connection process, the width of the lower frame of the display module is also limited. The polarizer 20 is disposed on the side of the touch substrate 10 away from the display panel 40, and due to the limitation of the first binding connection region, the length of the polarizer 20 in the first direction (the X direction in fig. 1) is limited, so that the risk of light leakage is high.
In view of the above problems, as shown in fig. 2 to 4, the present embodiment provides a touch substrate, including a flexible substrate, where the flexible substrate includes:
a touch sensing area 31 for setting a touch sensing structure;
a binding connection region 33 for connecting with a main circuit board of the display device;
a first bendable region 32 located between the touch sensing region 31 and the bonding region 33, wherein a signal line for transmitting a signal of the touch sensing structure to the touch circuit chip 6 is disposed on the first bendable region 32.
The first bendable region 32 of the flexible substrate is provided with a signal line for transmitting the signal of the touch sensing structure to the touch circuit chip 6, i.e. the function of the flexible circuit board is integrated on the flexible substrate, and the flexible circuit board does not need to be arranged independently, so that the connection instability caused by bending is avoided due to the integrated arrangement, and the reliability of the touch function is enhanced; the flexible circuit board is omitted, so that the cost is reduced; and the thickness of the flexible substrate base plate is far smaller than that of the flexible circuit board, so that the width of the lower edge of the display module is narrower due to the fact that the flexible circuit board is omitted, and the comprehensive screen design is achieved.
In order to clearly show the positions of the touch sensing area 31, the first bendable area 32, and the bonding area 33, the positions are divided by dotted lines in fig. 4, it should be noted that fig. 4 is a schematic diagram, and the positions of the dotted lines in fig. 4 are drawn only for illustrating the positions of the touch sensing area 31, the first bendable area 32, and the bonding area 33, and are not limited to the protection range of the touch substrate.
The touch circuit chip 6 may be disposed on a main circuit board of the display device, or may be integrated on the flexible substrate, in this embodiment, the touch circuit chip 6 is disposed in the bonding area 33, and an orthographic projection of the touch circuit chip on the bonding area completely falls within the bonding area, so that the touch circuit chip 6 and the touch sensing structure are integrated into a whole, thereby effectively enhancing reliability of a touch function.
The touch sensing structure may have a plurality of specific structural forms, in this embodiment, the touch sensing structure includes a plurality of sensors distributed in an array manner in the touch sensing area 31, but not limited thereto.
The sensor located in the touch sensing area 31 transmits a signal to the touch circuit chip 6 on the binding connection area 33 through the signal line on the first bending area, and the sensor, the signal line and the touch circuit chip 6 are integrated into a whole, so that the reliability of a touch function is enhanced.
In this embodiment, a binding disk 7 for connecting with a main circuit board is disposed on the binding connection region 33.
The specific structural forms of the touch sensing area 31, the first bendable area 32, and the bonding area 33 may be various, and in this embodiment, as shown in fig. 2 and 3, the touch sensing area 31 is a rectangular structure, and the first bendable area 32 and the bonding area 33 are strip-shaped structures formed by extending a portion of one side edge of the rectangular structure, but not limited thereto.
It should be noted that the shape of the touch sensing area 31 is not limited to the rectangular structure, and in practical use, the shape of the touch sensing area matches with the shape of the display panel so as to implement the touch function.
The specific shapes of the first bendable region 32 and the bonding region 33 may be regular or irregular strip structures, the shape of the first bendable region 32 and the shape of the bonding region 33 may be the same or different, as shown in fig. 2 and 3, in an embodiment of this embodiment, the bonding region 33 includes a first setting region for setting the touch circuit chip 6 and a second setting region for setting the bonding pad 7, the shape of the first setting region conforms to the shape of the touch circuit chip 6, the shape of the second setting region conforms to the shape of the bonding pad 7, the area of the first setting region in fig. 3 is larger than the size of the second setting region, the bendable performance of the first bendable region 32 is effectively ensured according to actual conditions, the connection stability of the touch circuit chip 6 is ensured, and can save the space effectively, dodge other devices.
The first bendable region 32 and the binding connection region 33 are strip-shaped structures formed by extending a part of one side edge of the rectangular structure, so that the first bendable region 32 can be bent easily, and meanwhile, the effect of avoiding space and avoiding interference with other devices in the display module is achieved.
The invention further provides a touch display device, as shown in fig. 4, including a display module and the touch substrate.
In this embodiment, the display module includes a display panel 4 located on a first side of the touch substrate, and a polarizer 2 located on a second side of the touch substrate opposite to the first side.
Because the flexible circuit board is omitted, the touch sensing area 31 and the corresponding setting of binding and connecting with the flexible circuit board are omitted, the limitation on the length of the polaroid 2 is also cancelled, compared with the prior art, one end of the polaroid 2, which is close to the first bendable area 32, can extend longer in the direction away from the touch sensing area 31, and the light leakage risk is reduced.
In this embodiment, the touch substrate and the display panel 4 are connected by an optical adhesive, but not limited thereto.
In this embodiment, a cover plate 1 is disposed on one side of the polarizer 2 away from the touch substrate.
In this embodiment, the cover plate 1 and the polarizer 2 are connected by an optical adhesive, and the light transmittance is good, but not limited thereto.
In this embodiment, the display panel 4 includes:
a first region correspondingly connected to the touch sensing region 31 of the touch substrate;
a second bendable region corresponding to the first bendable region 32;
and a second region 41 binding-connected with the main circuit board of the display device, wherein the position of the second region 41 corresponds to the position of the binding-connection region 33.
It should be noted that, the distance between the display panel 4 and the touch substrate may be zero, but there is no stress between the display panel 4 and the touch substrate, so as to avoid affecting the display function or the touch function of the product.
In this embodiment, an insulating protection layer is disposed between the display panel 4 and the touch substrate.
In this embodiment, the polarizer 2 and the touch substrate are connected by an optical adhesive.
In this embodiment, a heat dissipation film 5 is disposed on a side of the second area of the display panel 4 away from the touch substrate.
In this embodiment, the heat dissipation film 5 is connected to the second area 41 of the display panel 4 by a double-sided tape, but not limited thereto.
The display device may be: the display device comprises any product or component with a display function, such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet personal computer and the like, wherein the display device further comprises a flexible circuit board, a printed circuit board and a back plate.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A touch substrate, comprising a flexible substrate, the flexible substrate comprising:
the touch sensing area is used for setting the touch sensing structure;
a binding connection region for connecting with a main circuit board of the display device;
the first bendable region is positioned between the touch sensing region and the binding connection region, and a signal line for transmitting a signal of the touch sensing structure to the touch circuit chip is arranged on the first bendable region;
the touch circuit chip is arranged in the binding connection area, and the orthographic projection of the touch circuit chip on the binding connection area completely falls in the binding connection area;
a binding disc is arranged on the binding connection area;
the bonding area comprises a first setting area used for setting the touch circuit chip and a second setting area used for setting the bonding disc, the area of the first setting area is larger than the size of the second setting area, the bonding area is of an irregular strip-shaped structure, the shape of the first setting area conforms to that of the touch circuit chip, and the shape of the second setting area conforms to that of the bonding disc.
2. The touch substrate of claim 1, wherein the touch sensing area is a rectangular structure, and the first bendable area and the bonding area are strip-shaped structures formed by extending a portion of one side edge of the rectangular structure.
3. A touch display device comprising a display module and the touch substrate of claim 1 or 2.
4. The touch display device of claim 3, wherein the display module comprises a display panel on a first side of the touch substrate and a polarizer on a second side of the touch substrate opposite to the first side.
5. The touch display device of claim 4, wherein the display panel comprises:
a first area correspondingly connected with the touch sensing area of the touch substrate;
the second bendable region corresponds to the first bendable region;
and the second area is in binding connection with the main circuit board of the display device, and the position of the second area corresponds to the position of the binding connection area.
6. The touch display device of claim 4, wherein an insulating protective layer is disposed between the display panel and the touch substrate.
7. The touch display device of claim 4, wherein the polarizer and the touch substrate are connected by an optical adhesive.
8. The touch display device of claim 4, wherein a heat dissipation film is disposed on a side of the second area of the display panel away from the touch substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389654.2A CN109542270B (en) | 2018-11-21 | 2018-11-21 | Touch substrate and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389654.2A CN109542270B (en) | 2018-11-21 | 2018-11-21 | Touch substrate and touch display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109542270A CN109542270A (en) | 2019-03-29 |
| CN109542270B true CN109542270B (en) | 2022-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811389654.2A Active CN109542270B (en) | 2018-11-21 | 2018-11-21 | Touch substrate and touch display device |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110096176B (en) | 2019-04-25 | 2021-12-28 | 京东方科技集团股份有限公司 | Touch display device, manufacturing method thereof and terminal equipment |
| CN110187792A (en) * | 2019-05-30 | 2019-08-30 | 业成科技（成都）有限公司 | Touch control display device, touch sensing, touch module and preparation method |
| CN110286794B (en) * | 2019-06-26 | 2023-09-29 | 京东方科技集团股份有限公司 | Touch panel, touch module and touch display device |
| EP4053624A4 (en) * | 2019-11-01 | 2022-11-09 | BOE Technology Group Co., Ltd. | Display module and display device |
| CN111210730B (en) * | 2020-03-06 | 2023-05-26 | 昆山国显光电有限公司 | Display panel and display device |
| CN111182775A (en) * | 2020-03-10 | 2020-05-19 | 昆山工研院新型平板显示技术中心有限公司 | Display screen |
| CN111580699B (en) * | 2020-05-13 | 2023-10-24 | 京东方科技集团股份有限公司 | Display module and display device |
| CN114503064B (en) * | 2020-08-27 | 2023-05-19 | 京东方科技集团股份有限公司 | Display device and electronic apparatus |
| EP4147275A4 (en) * | 2020-09-09 | 2023-06-21 | BOE Technology Group Co., Ltd. | Display apparatus |
| CN112860122B (en) * | 2021-03-17 | 2024-04-16 | 京东方科技集团股份有限公司 | Touch display device and display system |
| CN114302287A (en) * | 2021-12-30 | 2022-04-08 | 华勤技术股份有限公司 | Circuit board assembly, assembling method thereof and earphone |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104102383B (en) * | 2014-07-15 | 2016-08-17 | 京东方科技集团股份有限公司 | Color membrane substrates, liquid crystal module and touch control display apparatus |
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| CN104199570A (en) * | 2014-08-11 | 2014-12-10 | 深圳市宇顺电子股份有限公司 | Touch screen manufacturing method and touch screen |
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| CN109542270A (en) | 2019-03-29 |
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