CN108984022B - Touch panel and display module - Google Patents
Touch panel and display module Download PDFInfo
- Publication number
- CN108984022B CN108984022B CN201810637895.8A CN201810637895A CN108984022B CN 108984022 B CN108984022 B CN 108984022B CN 201810637895 A CN201810637895 A CN 201810637895A CN 108984022 B CN108984022 B CN 108984022B
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- area
- touch
- adhesive layer
- cover plate
- 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
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
Abstract
The invention relates to the technical field of display, and discloses a touch panel and a display module. The touch panel comprises a touch substrate, a cover plate and an adhesive layer positioned between the touch substrate and the cover plate, wherein the adhesive layer comprises an opaque first area, and light reflected by metal wires on the periphery of the touch substrate is shielded through the opaque first area. In the display module, the cover plate is arranged on one side, close to the display side, of the touch substrate, so that metal wires on the periphery of the touch substrate cannot be seen from the display side, the display quality of the touch display module is improved, and the appearance effect of a product is improved. Because only the part of the bonding layer needs to be opaque, a new composition process does not need to be added, and the touch substrate is not affected, the yield of products can be improved, and the manufacturing cost is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a touch panel and a display module.
Background
With the continuous development and progress of touch display technology, in order to present an immersive appreciation aesthetic feeling to viewers, the full-screen touch display technology gradually becomes the mainstream of the world. With the rise of the flexible OLED technology, the full-screen touch display technology becomes the main direction for mobile phone manufacturers to research and produce.
The mainstream structure design schematic diagram of the current OLED touch display module is shown in fig. 1: the cover plate 1 ', the first optical adhesive layer 2 ', the polarizer 3 ', the touch substrate 4 ', the second optical adhesive layer 5 ', the display panel 6 ' and the heat dissipation membrane 7 ' are assembled together through different process routes. In order to reduce the visibility of the metal traces on the periphery of the touch substrate 4 ', the polarizer 3 ' needs to be disposed on the side of the touch substrate 4 ' close to the display side.
The fingerprint identification technology is one of the key research and development directions of mobile phone manufacturers, and a schematic structural diagram of an OLED touch display module with a fingerprint detection function is shown in fig. 2. It should be noted that, since the touch electrode on the touch substrate 4 ' may cause strong internal reflection, which may cause distortion or ineffective acquisition of an image acquired by the Fingerprint Sensor (Fingerprint Sensor)8 ', to solve the problem, the touch substrate 4 ' needs to be moved to the side of the polarizer 3 ' close to the display side, so that the reduction of the light reflected by the touch electrode through the polarizer 3 ' may not affect the image acquisition of the Fingerprint Sensor. Since the peripheral traces of the touch substrate 4 'are usually made of metal, and the metal has a strong reflection effect, the peripheral traces of the touch substrate 4' can be seen when observing from the display side, which affects the peripheral display effect and poor appearance effect of the OLED.
Disclosure of Invention
The invention provides a touch panel and a display module, which are used for solving the problem that peripheral wiring of a touch substrate can be seen from a display side.
In order to solve the technical problem, the invention provides a touch panel, which comprises a touch substrate and a cover plate which are arranged oppositely, wherein an adhesive layer is arranged between the touch substrate and the cover plate, the adhesive layer is used for fixedly adhering the touch substrate and the cover plate, the touch substrate comprises a touch area and a wiring area which is positioned at the periphery of the touch area, the adhesive layer comprises a first region which is not light-tight, and the orthographic projection of the wiring area on the adhesive layer is at least partially overlapped with the first region.
Optionally, the adhesive layer includes a first adhesive layer, a second adhesive layer, and a shielding pattern located between the first adhesive layer and the second adhesive layer, where the shielding pattern covers the entire first region.
Optionally, the touch panel further includes a transparent optical film, the transparent optical film is located between the first adhesive layer and the second adhesive layer, and the shielding pattern is disposed on the transparent optical film.
Optionally, the first adhesive layer is disposed on a surface of the touch substrate close to the cover plate;
the transparent optical film is arranged on the surface, close to the cover plate, of the first bonding layer, and the shielding patterns are arranged on the surface, close to the cover plate, of the transparent optical film;
the second adhesive layer covers the shielding pattern and the transparent optical film.
Optionally, the first adhesive layer is disposed on a surface of the touch substrate close to the cover plate;
the shielding pattern is arranged on the surface, close to the cover plate, of the first bonding layer, and the second bonding layer covers the shielding pattern and the first bonding layer.
Optionally, the cover plate includes a light-transmitting area and a light-proof area located at the periphery of the light-transmitting area, and an orthographic projection of the touch area on the cover plate is located in the light-transmitting area;
the first area at least covers an area between an orthographic projection of the light-tight area on the bonding layer and an orthographic projection of the touch area on the bonding layer.
Optionally, the whole cover plate is transparent;
the orthographic projection of the wiring area on the bonding layer is located in the first area.
The embodiment of the invention also provides a display module, which comprises a display panel and the touch panel, wherein the touch panel is arranged on the display side of the display panel, the cover plate is arranged on one side, close to the display side, of the touch substrate, and the orthographic projection of the first area on the plane where the display panel is located is not overlapped with the display area of the display panel.
Optionally, the method further includes:
the fingerprint detection sensor array is used for acquiring light rays reflected by fingerprints when a user touches the display module;
and the polaroid is arranged on the display side of the display panel and is positioned between the touch panel and the fingerprint detection sensor array.
Optionally, the display module further includes:
the heat dissipation film is positioned on one side of the display panel, which is far away from the touch panel;
the fingerprint detection sensor array is arranged on the heat dissipation film.
The technical scheme of the invention has the following beneficial effects:
among the above-mentioned technical scheme, including the region of lightproof through setting up the adhesive linkage between touch-control base plate and the apron to shelter from the peripheral metal of touch-control base plate through this region of lightproof and walk the reflected light of line, thereby can not see peripheral metal and walk the line from one side at apron place, promote touch-control display module's display quality, improve the outward appearance effect of product. Because only the part of the bonding layer needs to be opaque, a new composition process does not need to be added, and the touch substrate is not affected, the yield of products can be improved, and the manufacturing cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an OLED touch display module in the prior art;
fig. 2 is a schematic structural diagram of an OLED touch display module with fingerprint detection function in the prior art;
FIG. 3 is a first schematic structural diagram of a display module according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a display module according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a display module according to an embodiment of the invention;
FIG. 6 is a schematic structural diagram of a display module according to an embodiment of the invention;
fig. 7 is a schematic structural diagram of the adhesive layer between the touch substrate and the cover plate in fig. 3-6;
FIG. 8 is a schematic view of another structure of the adhesive layer between the touch substrate and the cover plate according to the embodiment of the invention;
FIG. 9 is a schematic structural diagram of a display module according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of a display module according to an embodiment of the invention.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 3, an embodiment of the invention provides a touch panel, which includes a touch substrate 1 and a cover plate 2 that are disposed opposite to each other, an adhesive layer 3 is disposed between the touch substrate 1 and the cover plate 2 (the material of the adhesive layer 3 may be optical glue), and the adhesive layer 3 is used for fixedly adhering the touch substrate 1 and the cover plate 2. The touch substrate 1 includes a touch area 100 and a trace area 101 located at the periphery of the touch area 100, the touch area 100 is provided with a touch electrode, and the trace area 101 is provided with a metal trace for connecting the touch electrode and a touch chip.
The adhesive layer 3 comprises a first area 300 which is not transparent to light, and the orthographic projection of the trace area 101 on the adhesive layer 3 at least partially overlaps the first area 300.
The touch panel comprises an opaque area through the bonding layer arranged between the touch substrate and the cover plate, and light reflected by peripheral metal wires of the touch substrate is shielded through the opaque area, so that the peripheral metal wires cannot be seen from one side where the cover plate is located, the display quality of the touch display module is improved, and the appearance effect of a product is improved. Because only the part of the bonding layer needs to be opaque, a new composition process does not need to be added, and the touch substrate is not affected, the yield of products can be improved, and the manufacturing cost is reduced.
The touch substrate of the present invention can be a capacitive touch substrate, a resistive touch substrate, etc., and is not limited herein, and is suitable for the technical solution of the present invention.
The cover plate 2 may include a transparent region and an opaque region located at the periphery of the transparent region, or may be a transparent substrate that is transparent as a whole.
When the cover 2 includes a transparent region 200 and an opaque region 201 located at the periphery of the transparent region 200, the orthographic projection of the touch region 100 of the touch substrate 1 on the cover 2 is located in the transparent region 200. The first area 300 at least covers an area between an orthographic projection of the opaque area 200 on the adhesive layer 3 and an orthographic projection of the touch area 100 on the adhesive layer 3, and the opaque area 200 and the first area 300 can jointly block light reflected by metal wires in the wire routing area 101 at the periphery of the touch area 100, so that the metal wires in the wire routing area 101 cannot be seen from the side where the cover plate 2 is located.
The first area 300 covers at least an area between an orthographic projection of the opaque area 200 on the adhesive layer 3 and an orthographic projection of the touch area 100 on the adhesive layer 3, and includes the following two cases:
the first method comprises the following steps: as shown in fig. 4 and fig. 5, the first area 300 is located in the orthographic projection of the trace area 101 on the adhesive layer 3, and includes two cases: the first method comprises the following steps: the first area 300 covers only the area between the orthographic projection of the opaque area 200 on the adhesive layer 3 and the orthographic projection of the touch area 100 on the adhesive layer 3, as shown in fig. 4. And the second method comprises the following steps: the first area 300 covers an area between the orthographic projection of the opaque area 200 on the adhesive layer 3 and the orthographic projection of the touch area 100 on the adhesive layer 3, and partially covers an area where the orthographic projection of the wiring area 101 on the adhesive layer 3 is located, as shown in fig. 5, that is, the orthographic projection of the opaque area 200 on the adhesive layer 3 is partially overlapped with the first area 300, so that light reflected by the metal wiring in the wiring area 101 can be better shielded, and the metal wiring cannot be seen from the side where the cover plate 2 is located;
and the second method comprises the following steps: the orthographic projection of the routing area 101 on the adhesive layer 3 is located in the first area 300, so that the shielding effect of the first area 300 is improved, as shown in fig. 6;
and the third is that: the orthographic projection of the trace area 101 on the adhesive layer 3 coincides with the first area 300, as shown in fig. 3.
The opaque region 201 of the cover plate 2 can be formed by forming an opaque film pattern (e.g., an ink layer, a metal oxide layer, or a black resin layer) on the periphery of the transparent substrate.
When the cover plate 2 is a transparent substrate with a whole transparent light, the orthographic projection of the routing area 101 on the adhesive layer 3 is located in the first area 300, as shown in fig. 9, or the orthographic projection of the routing area 101 on the adhesive layer 3 is overlapped with the first area 300, as shown in fig. 10, so that light reflected by the metal routing of the routing area 101 at the periphery of the touch area 100 is shielded only by the first area 300 of the adhesive layer 3, and the metal routing of the routing area 101 cannot be seen from the side where the cover plate 2 is located. Specifically, the orthographic projection of the trace area 101 on the adhesive layer 3 can be set to coincide with the first area 300.
In order to realize the adhesive layer with the above structure, in a specific embodiment, as shown in fig. 3 to 6 and 7, the adhesive layer 3 is provided to include a first adhesive layer 31 and a second adhesive layer 32, and a shielding pattern 30 between the first adhesive layer 31 and the second adhesive layer 32, and the shielding pattern 30 is located in the first area 300 to cover the entire first area 300, so that the first area 300 is opaque.
The shielding pattern 30 may be formed of an ink, a metal oxide, or a black resin, which is selected from the materials of the shielding pattern.
In this embodiment, specifically, the first adhesive layer 31 may be disposed on the surface of the touch substrate 1 close to the cover 2, the shielding pattern 30 is disposed on the surface of the first adhesive layer 31 close to the cover 2, and the second adhesive layer 32 covers the shielding pattern 30 and the first adhesive layer 31.
In the above specific structure, the adhesive layer 3 is provided on the touch substrate 1.
Of course, the adhesive layer may be disposed on the cover plate, and the specific structure is: the second adhesive layer is arranged on the surface, close to the touch substrate, of the cover plate, the shielding pattern is arranged on the surface, close to the touch substrate, of the second adhesive layer, and the first adhesive layer covers the shielding pattern and the second adhesive layer.
In order to realize the adhesive layer having the above structure, in another specific embodiment, as shown in fig. 8, the adhesive layer 3 is provided to include a first adhesive layer 31 and a second adhesive layer 32, and a transparent optical film 4 between the first adhesive layer 31 and the second adhesive layer 32, and a shielding pattern 30 is provided on a surface of the transparent optical film 4, the shielding pattern 30 being located in a first area 300 to cover the entire first area 300, so that the first area 300 is opaque.
The shielding pattern 30 may be formed of an ink, a metal oxide, or a black resin, which is selected from the materials of the shielding pattern.
In this embodiment, specifically, the first adhesive layer 31 may be disposed on the surface of the touch substrate 1 close to the cover plate 2, the transparent optical film 4 is disposed on the surface of the first adhesive layer 31 close to the cover plate 2, the shielding pattern 30 is disposed on the surface of the transparent optical film 4 close to the cover plate 2, and the second adhesive layer 32 covers the shielding pattern 30 and the transparent optical film 4.
In the above specific structure, the adhesive layer 3 is provided on the touch substrate 1.
Of course, the adhesive layer may be disposed on the cover plate, and the specific structure is: the second adhesive layer is arranged on the surface, close to the touch substrate, of the cover plate, the transparent optical film is arranged on the surface, close to the touch substrate, of the second adhesive layer, the shielding pattern is arranged on the surface, close to the touch substrate, of the transparent optical film, and the first adhesive layer covers the shielding pattern and the transparent optical film.
The two embodiments described above show two specific implementations of the adhesive layer of the present invention. It should be noted that the specific implementation structure for implementing the adhesive layer including the first region which is not transparent to light is not limited to the above two, for example: the first region of the bonding layer can be dyed by a dye after the bonding layer is formed between the touch substrate and the substrate, so that the first region is opaque.
As shown in fig. 10, the touch panel in the embodiment of the present invention specifically includes:
the touch substrate 1 comprises a touch area 100 and a wiring area 101 located at the periphery of the touch area 100, the touch area 100 is provided with touch electrodes, and the wiring area 101 is provided with metal wirings connected with the touch electrodes and used for connecting the touch electrodes and a touch chip. The cover plate 2 comprises a light-transmitting area 200 and a light-tight area 201 positioned at the periphery of the light-transmitting area 200;
the adhesive layer 3 disposed between the touch substrate 1 and the cover plate 2 includes a first region 300 that is opaque, and an orthographic projection of the trace region 101 on the adhesive layer 3 coincides with the first region 300.
Wherein, the adhesive layer 3 includes a first adhesive layer 31 and a second adhesive layer 32, and a shielding pattern 30 located between the first adhesive layer 31 and the second adhesive layer 32, the shielding pattern 30 covers the entire first area 300, so that the first area 300 is opaque.
Further, the adhesive layer 3 may further include a transparent optical film 4 on the first adhesive layer 31 and the second adhesive layer 32, and the shielding pattern 30 is disposed on a surface of the transparent optical film 4.
With reference to fig. 3-6 and fig. 7, an embodiment of the present invention further provides a display module, which includes a display panel 5 and the touch panel as described above, where the touch panel is disposed on the display side of the display panel 5, and the cover plate 2 is located on a side of the touch substrate 1 close to the display side. The adhesive layer 3 between the touch substrate 1 and the cover plate 2 comprises the first opaque area 300, and the light reflected by the peripheral metal wiring of the touch substrate 1 is shielded through the first area 300, so that the peripheral metal wiring of the touch substrate 1 cannot be seen from the display side, the display quality of the touch display module is improved, and the appearance effect of the product is improved. Because only the part of the bonding layer needs to be opaque, a new composition process does not need to be added, and the touch substrate is not affected, the yield of products can be improved, and the manufacturing cost is reduced.
In order not to affect the display, the orthographic projection of the first area 300 on the plane of the display panel 5 is set not to overlap with the display area 500 of the display panel 5, so that the first area 300 does not block the display light.
The touch substrate 1 and the display panel 5 can be bonded and fixed through the optical adhesive layer 9.
The technical scheme of the invention is suitable for the liquid crystal display technology, the OLED display technology and the like.
The display module in this embodiment still includes:
the fingerprint detection sensor array 6 is used for acquiring light rays reflected by fingerprints when a user touches the display module;
and the polarizer 7 is arranged on the display side of the display panel 5 and is positioned between the touch panel 5 and the fingerprint detection sensor array 6.
Above-mentioned display module assembly can realize the discernment to user's fingerprint, through set up the polaroid between touch panel and fingerprint detection sensor array for the interference of the light of touch-control electrode reflection on the touch-control base plate to fingerprint identification can be subducted to the polaroid, in order to realize the discernment to the fingerprint, improves the precision to fingerprint identification. And the polaroid can also reduce the light reflected by the display electrode, and the display effect is improved.
Furthermore, one side of the display panel, which is away from the touch panel, is provided with a heat dissipation film 8 for rapidly releasing heat and preventing the normal display of the display panel from being influenced by overhigh temperature.
Fingerprint detection sensor array 6 in this embodiment can set up on heat dissipation membrane 8, is located the one side that deviates from the demonstration side of display panel 5, can not shelter from and show light, and fingerprint detection sensor array 6's the mode of arranging no longer receives the restriction moreover, and is more nimble.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A touch panel comprises a touch substrate and a cover plate which are oppositely arranged, wherein the touch substrate comprises a touch area and a wiring area which is positioned at the periphery of the touch area, and the cover plate is arranged at one side of the touch substrate, which is far away from a polarizer in a display module; the touch panel is characterized in that an adhesive layer is arranged between the touch substrate and the cover plate and used for fixedly adhering the touch substrate and the cover plate, the adhesive layer comprises a first opaque area, and the orthographic projection of the wiring area on the adhesive layer is at least partially overlapped with the first area;
the bonding layer comprises a first bonding layer, a second bonding layer and a shielding pattern positioned between the first bonding layer and the second bonding layer, and the shielding pattern covers the whole first area;
except the position of the shielding graph, the first bonding layer is in direct contact with the second bonding layer.
2. The touch panel according to claim 1, further comprising a transparent optical film between the first adhesive layer and the second adhesive layer, wherein the shielding pattern is provided on the transparent optical film.
3. The touch panel of claim 2, wherein the first adhesive layer is disposed on a surface of the touch substrate adjacent to the cover sheet;
the transparent optical film is arranged on the surface, close to the cover plate, of the first bonding layer, and the shielding patterns are arranged on the surface, close to the cover plate, of the transparent optical film;
the second adhesive layer covers the shielding pattern and the transparent optical film.
4. The touch panel of claim 1, wherein the first adhesive layer is disposed on a surface of the touch substrate adjacent to the cover sheet;
the shielding pattern is arranged on the surface, close to the cover plate, of the first bonding layer, and the second bonding layer covers the shielding pattern and the first bonding layer.
5. The touch panel according to any one of claims 2 to 4, wherein the cover plate comprises a transparent region and an opaque region located at the periphery of the transparent region, and an orthographic projection of the touch region on the cover plate is located in the transparent region;
the first area at least covers an area between an orthographic projection of the light-tight area on the bonding layer and an orthographic projection of the touch area on the bonding layer.
6. The touch panel according to any one of claims 2 to 4, wherein the entire cover plate is light-transmissive;
the orthographic projection of the wiring area on the bonding layer is located in the first area.
7. A display module, comprising a display panel, and further comprising the touch panel of any one of claims 1 to 6, wherein the touch panel is disposed on a display side of the display panel, the cover plate is disposed on a side of the touch substrate close to the display side, and an orthographic projection of the first area on a plane where the display panel is located does not overlap with the display area of the display panel.
8. The display module of claim 7, further comprising:
the fingerprint detection sensor array is used for acquiring light rays reflected by fingerprints when a user touches the display module;
and the polaroid is arranged on the display side of the display panel and is positioned between the touch panel and the fingerprint detection sensor array.
9. The display module assembly of claim 8, wherein the display module assembly further comprises:
the heat dissipation film is positioned on one side of the display panel, which is far away from the touch panel;
the fingerprint detection sensor array is arranged on the heat dissipation film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810637895.8A CN108984022B (en) | 2018-06-20 | 2018-06-20 | Touch panel and display module |
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| CN201810637895.8A CN108984022B (en) | 2018-06-20 | 2018-06-20 | Touch panel and display module |
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| CN108984022A CN108984022A (en) | 2018-12-11 |
| CN108984022B true CN108984022B (en) | 2022-03-01 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782951B (en) | 2019-01-09 | 2021-08-27 | 京东方科技集团股份有限公司 | Touch display panel and display device |
| CN109581716B (en) * | 2019-01-24 | 2021-11-23 | 京东方科技集团股份有限公司 | Display substrate, display panel and mask plate |
| CN109886224B (en) | 2019-02-27 | 2021-03-30 | 京东方科技集团股份有限公司 | Display module, display device and manufacturing method thereof |
| CN112445360B (en) * | 2019-08-30 | 2024-01-23 | 京东方科技集团股份有限公司 | Touch screen and display device |
| CN113994253B (en) * | 2020-05-15 | 2023-10-27 | 京东方科技集团股份有限公司 | Display device and method for manufacturing the same |
| CN111766977B (en) * | 2020-06-12 | 2021-08-24 | 惠州市华星光电技术有限公司 | Touch panel and touch display device |
| CN114089857A (en) * | 2021-10-08 | 2022-02-25 | 深圳柔宇显示技术有限公司 | Display touch module, control method of display touch module and electronic equipment |
| WO2024044879A1 (en) * | 2022-08-29 | 2024-03-07 | 京东方科技集团股份有限公司 | Display substrate and touch-control display apparatus |
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| CN108984022A (en) | 2018-12-11 |
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