CN210072572U - Touch module, display device and terminal equipment - Google Patents
Touch module, display device and terminal equipment Download PDFInfo
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- CN210072572U CN210072572U CN201920797942.5U CN201920797942U CN210072572U CN 210072572 U CN210072572 U CN 210072572U CN 201920797942 U CN201920797942 U CN 201920797942U CN 210072572 U CN210072572 U CN 210072572U
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Abstract
The embodiment of the application discloses a touch module. The touch module comprises a quarter-wave plate, a touch wire and a linear polarizer, wherein the quarter-wave plate and the linear polarizer are arranged in a laminated mode, the quarter-wave plate comprises a first surface and a second surface which are arranged in a back-to-back mode, the first surface faces the linear polarizer, and the touch wire is located on the first surface and/or the second surface; the quarter-wave plate comprises a first part and a second part located on the periphery of the first part, the first part is opposite to the linear polarizer, and the touch control wiring is located on the first part and the second part. According to the touch control module, the touch control wiring is arranged on the surface of the quarter-wave plate, so that the quarter-wave plate is used as a substrate of the touch control wiring, and the thickness of the touch control module is reduced. Moreover, the area of the linear polarizer is smaller than that of the quarter-wave plate, so that the condition that touch wiring is broken due to overlarge bending strain is avoided, and the quality of the touch module is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of terminals, in particular to a touch module, a display device and terminal equipment.
Background
Touch technology is increasingly widely applied to electronic products such as mobile phones, tablets, notebook computers and the like. With the development of electronic products, people have higher and higher requirements on the performance of the electronic products, and the electronic products need excellent electrical properties such as touch sensitivity and accuracy; but also needs to have beautiful appearance, such as ultra-narrow frame, no frame, etc.
The frame of electronic product is more and more narrow, also requires more and more narrow to the frame of touch-sensitive screen, also requires more and more narrow to the marginal wiring area of touch-sensitive screen promptly, reaches no frame even to make electronic product show more content as far as possible on limited size, promote user experience effect, improve electronic product's market competition. At present, the edge wiring adopted by the touch screen cannot continuously realize a narrower frame when the minimum line width of the wiring reaches the limit of the process.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a touch module with a narrow frame, a display device and terminal equipment.
In a first aspect, a touch module is provided. The touch module can be applied to a display device of terminal equipment. The display device may be any product or component having a display function. The touch module is used for sensing touch operation of the contact. The contacts may be user fingers, touch pens, etc.
The touch module comprises a quarter-wave plate, a touch wire and a linear polarizer. The quarter-wave plate and the linear polarizer are arranged in a laminated mode. The linear polarizer and the quarter-wave plate form a circular polarizer for reducing reflection. The external environment light is converted into linearly polarized light after passing through the linear polarizer, and the linearly polarized light is converted into circularly polarized light after passing through the quarter-wave plate. After the environment light finally forms circularly polarized light, the circularly polarized light is blocked and cannot be reflected out in the circularly polarized light sheet, so that the circularly polarized light sheet can effectively resist the environment light, the interference of the environment light to the display panel is reduced, and the quality of the display device is improved.
The quarter-wave plate comprises a first surface and a second surface which are arranged oppositely. The first surface faces the linear polarizer. The touch routing is located on the first face and/or the second face. In one embodiment, the touch traces can be located only on the first side. In other embodiments, the touch traces can be located only on the second side; or, a part of the touch traces are located on the first surface, and a part of the touch traces are located on the second surface.
In an embodiment of the present application, the touch trace is located on a surface of the quarter wave plate. That is, the quarter-wave plate is used as the substrate of the touch trace, so that the substrate of the touch trace in the conventional technology is reduced, the thickness of the touch module is reduced, the thickness of the display device is reduced, and the terminal setting is lighter, thinner and more flexible.
The quarter wave plate includes a first portion and a second portion located at a periphery of the first portion. The second portion can be located on two sides of the first portion, can also be located on three sides of the first portion, and can also be located around the first portion. The first portion faces the linear polarizer. That is, the area of the linear polarizer is smaller than that of the quarter-wave plate. The touch routing is located on the first portion and the second portion. Therefore, part of the touch routing wires are exposed relative to the linear polarizer.
In the embodiment of the application, the touch wiring exposed relative to the linear polarizer can be bent to the other side of the touch module, so that the area of a non-display area of the display device is reduced, and the narrow frame of the display device is facilitated. Moreover, the touch wires of the bent part and the linear polaroids are arranged in a staggered manner, so that the thickness above the bent touch wires is reduced, the strain generated by bending the touch wires is reduced, and the condition that the touch wires are broken due to overlarge bending strain is avoided, thereby improving the quality of the touch module.
The touch routing comprises a touch electrode and a leading-out wire. The outgoing line is a wiring led out by the touch electrode. The outgoing line is finally connected to a driving circuit (or a driving chip, not shown) through a flexible printed circuit board, so that the driving circuit can transmit a control signal to the display device or receive an induction signal, and the display device has a touch function.
On the basis of realizing electric connection, the outgoing line can also be matched with the quarter-wave plate to deform freely, the original state can not be blocked, random bending of all directions and all parts can be realized, and excellent conductive performance is kept.
The touch module comprises a touch area and a wiring area. The wiring area is located on the periphery of the touch area. The touch electrode is located in the touch area, and the outgoing line is located in the wiring area. In an embodiment of the present application, the outgoing line is bent with respect to the touch electrode. That is, the wiring area is bent relative to the touch area.
In an alternative embodiment, the first portion includes a first edge and a second edge connecting the first edge. The second portion includes a first region connecting the first edges and a second region connecting the second edges. The width of the first region is greater than the width of the second region.
When the user uses the terminal device, the first area can be located at the bottom of the terminal device and also can be located at the top of the terminal device. The second area is located on the side of the terminal device. And the outgoing line is finally converged to the first area and is connected with the chip through the flexible printed circuit board.
The first area of the second portion is located in a non-display area of the display device, and the first portion is located in a display area of the display device. In the embodiment of the application, the first region of the second portion is bent relative to the first portion, so that a non-display area of the display device is reduced, and a narrow frame of the display device is facilitated.
In an alternative embodiment, the first portion further comprises a third edge. The third edge is disposed opposite the first edge and connected to the second edge. The second portion further includes a third region connecting the third edges. The width of the third region is greater than the width of the second region.
When a user uses the terminal equipment, the first area is positioned at the bottom of the terminal equipment, and the third area is positioned at the top of the terminal equipment; or, the first area is located at the top of the terminal device, and the third area is located at the bottom of the terminal device. The second area is located on the side of the terminal device.
In one implementation, the touch module includes a first flexible printed circuit board and a second flexible printed circuit board. The outgoing lines of the upper half part of the touch module are converged to the third area and are connected with the chip through the first flexible printed circuit board. The outgoing lines of the lower half portion of the touch module are converged to the first area and are connected with the chip through the second flexible printed circuit board. The first region and the second region can be bent relative to the first portion, so that the areas of non-display areas at the bottom end and the top end of the terminal device are greatly reduced.
In the embodiment of the application, the touch traces are respectively led out from two opposite sides, so that the touch traces can be crossed or overlapped in space, the area of a non-display area on the side of the display device is further reduced, and the ultra-narrow frame is further realized.
In an optional embodiment, the touch traces include a first detection trace and a second detection trace. The first detection trace and the second detection trace are crossed and arranged in the same layer. The first detection line and the second detection line are mutually insulated and arranged in a cross mode. The first detection wiring and the second detection wiring are staggered with each other and do not intersect and overlap with each other, so that the touch detection cannot be performed due to mutual interference of signals between the first detection wiring and the second detection wiring.
When the first detection trace and the second detection trace are crossed and arranged in the same layer, the first detection trace and the second detection trace can be positioned on the surface of the quarter-wave plate close to the linear polarizer. The first detection line and the second detection line can also be positioned on the surface of the quarter-wave plate far away from the linear polarizer.
In this application embodiment, first detection line with the second detection line sets up on the same layer, has further reduced touch-control module's thickness to further reduce the part of buckling touch-control module's thickness has avoided the too big condition that causes of the dependent variable of buckling touch-control line broken string, thereby improves touch-control module's quality.
In an alternative embodiment, the first detection trace and the second detection trace are stacked on the same side of the quarter-wave plate. And an insulating layer is arranged between the first detection line and the second detection line. The insulating layer prevents mutual signal interference between the first detection wires and the second detection wires.
In the embodiment of the present application, the first detection trace and the second detection trace are disposed at an interval, so that signal interference between the first detection trace and the second detection trace is reduced, parasitic capacitance generated between the first detection trace and the second detection trace is reduced or eliminated, and sensitivity and accuracy of touch control are effectively improved. In addition, the first detection wiring and the second detection wiring are insulated by the insulating layer, so that the touch electrode is not required to be bridged by independently arranging the insulating layer or manufacturing an interlayer insulating pattern, the manufacturing process is simplified, and the product yield is improved.
When the first detection trace and the second detection trace are stacked on the same side of the quarter-wave plate, the first detection trace and the second detection trace can be located above the quarter-wave plate, and the first detection trace and the second detection trace can also be located below the quarter-wave plate.
In an optional embodiment, the touch trace is located on the first surface and contacts the linear polarizer. Or, the touch trace is located on the second surface. The touch-control trace is located on the first surface, and the touch-control trace comprises a first detection trace located on the first surface, or a second detection trace located on the first surface, or both the first detection trace and the second detection trace contact the first surface. The touch control wiring is contacted with the linear polarizer, and the touch control wiring comprises the condition that the first detection wiring is contacted with the linear polarizer, or the second detection wiring is contacted with the linear polarizer, or both the first detection wiring and the second detection wiring are contacted with the linear polarizer. Correspondingly, the touch trace is located on the second surface and includes that the first detection trace is located on the second surface, or the second detection trace is located on the second surface, or both the first detection trace and the second detection trace contact the second surface.
In an optional embodiment, the linear polarizer is directly coated on the quarter wave plate provided with the touch trace, so that the touch trace contacts the linear polarizer. In another optional embodiment, the linear polarizer is coated on a substrate, and the substrate is directly attached to the quarter-wave plate provided with the touch trace, so that the touch trace contacts the linear polarizer.
In an optional embodiment, the touch module further includes a cover plate and a transparent optical adhesive. The cover plate and the quarter-wave plate are arranged in a stacked mode. The cover plate is positioned on one side of the linear polarizer, which is far away from the quarter-wave plate. The linear polarizer is laminated on the surface of the cover plate facing the quarter-wave plate. The transparent optical adhesive is located between the linear polarizer and the first surface. The touch routing is located on the first surface.
In the embodiment of the present application, the linear polarizer is directly coated on the cover plate. The cover plate coated with the linear polaroid is attached to the quarter-wave plate through the transparent optical cement, so that the touch module integration process is simpler, and the production efficiency of the touch module is improved.
In an optional embodiment, the touch trace contacts the linear polarizer, and the linear polarizer contacts the transparent optical adhesive. That is, the transparent optical adhesive is located between the linear polarizer and the cover plate.
In the embodiment of the application, the linear polarizer is directly coated on the quarter wave plate provided with the touch wiring, and then the transparent optical adhesive is attached to the cover plate, so that the touch module integration process is simpler, and the production efficiency of the touch module is improved.
In an optional embodiment, the touch traces include a first detection trace and a second detection trace. The first detection trace and the second detection trace are respectively located on the first surface and the second surface. Wherein the first detection trace can be located on the first face and the second detection trace is located on the second face. Or, the second detection trace can be located on the first surface, and the first detection trace is located on the second surface.
In this embodiment of the application, the first detection trace and the second detection trace pass through the quarter-wave plate, so that signal interference between the first detection trace and the second detection trace is reduced, parasitic capacitance generated between the first detection trace and the second detection trace is reduced or eliminated, and sensitivity and accuracy of touch control are effectively improved. And the first detection wire and the second detection wire are insulated through the quarter-wave plate, so that the insulating layer is reduced, and the thickness of the touch module is further reduced.
In an optional embodiment, the first detection trace is located on the first surface and contacts the linear polarizer. Or the second detection routing wire is positioned on the first surface and contacts the linear polarizer.
In this embodiment of the application, the first detection trace is located on the first surface and contacts the linear polarizer, and the second detection trace is located on the second surface. Or the second detection wiring is positioned on the first surface and contacts the linear polarizer, and the first detection wiring is positioned on the second surface.
In an optional embodiment, the touch module further includes a cover plate and a transparent optical adhesive. The cover plate and the quarter-wave plate are arranged in a stacked mode. The linear polarizer is laminated on the surface of the cover plate facing the quarter-wave plate. The transparent optical adhesive is located between the linear polarizer and the first surface. The first detection trace is located on the first face. The second detection trace is located on the second surface, or the second detection trace is located between the first detection trace and the transparent optical adhesive. That is, the first detection trace and the second detection trace are disposed at an interval.
In the embodiment of the present application, the linear polarizer is directly coated on the cover plate. The cover plate coated with the linear polaroid is attached to the quarter-wave plate through the transparent optical cement, so that the touch module integration process is simpler, and the production efficiency of the touch module is improved. And the first detection wires and the second detection wires are arranged at intervals, so that signal interference between the first detection wires and the second detection wires is reduced, parasitic capacitance generated between the first detection wires and the second detection wires is reduced or eliminated, and the sensitivity and accuracy of touch control are effectively improved.
In an optional embodiment, the touch module further includes a cover plate and a transparent optical adhesive. The cover plate and the quarter-wave plate are arranged in a stacked mode. The linear polarizer is laminated on the surface of the cover plate facing the quarter-wave plate. The transparent optical adhesive is located between the linear polarizer and the first surface. The second detection trace is located on the first face. The first detection wiring is located on the second surface, or the first detection wiring is located between the second detection wiring and the transparent optical adhesive. That is, the first detection trace and the second detection trace are disposed at an interval.
In the embodiment of the present application, the linear polarizer is directly coated on the cover plate. The cover plate coated with the linear polaroid is attached to the quarter-wave plate through the transparent optical cement, so that the touch module integration process is simpler, and the production efficiency of the touch module is improved. And the first detection wires and the second detection wires are arranged at intervals, so that signal interference between the first detection wires and the second detection wires is reduced, parasitic capacitance generated between the first detection wires and the second detection wires is reduced or eliminated, and the sensitivity and accuracy of touch control are effectively improved.
In a second aspect, the present application further provides a display device. The display device comprises a display panel and the touch module. The display panel is located on one side, away from the linear polarizer, of the quarter-wave plate. The quarter-wave plate and the linear polarizer are both positioned on the light emergent side of the display panel. The display panel is located on one side, away from the linear polarizer, of the quarter-wave plate. When entering the touch module, the external light firstly passes through the linear polarizer and then passes through the quarter wave plate.
In the embodiment of the present application, the linear polarizer and the quarter-wave plate form a circular polarizer for reducing reflection. The external environment light is converted into linearly polarized light after passing through the linear polarizer, and the linearly polarized light is converted into circularly polarized light after passing through the quarter-wave plate. After the environment light finally forms circularly polarized light, the circularly polarized light is blocked and cannot be reflected out in the circularly polarized light sheet, so that the circularly polarized light sheet can effectively resist the environment light, the interference of the environment light to the display panel is reduced, and the quality of the display device is improved.
In an embodiment of the application, on one hand, part of the touch module of the display device can be bent, and specifically, the traces in the touch module can be bent to the other side of the touch module, so that the area of a non-display area of the display device is reduced. On the other hand, the touch wiring in the touch module is located on the surface of the quarter wave plate, and the area of the linear polarizer is smaller than that of the quarter wave plate, so that the linear polarizer is not included above the touch wiring to be bent, the thickness above the bent touch wiring is reduced, the strain generated by bending the touch wiring is reduced, the phenomenon that the touch wiring is broken due to too large bending strain is avoided, and the quality of the touch module is improved.
In a third aspect, the present application further provides a terminal device. The terminal equipment comprises a shell and the display device. The display device is mounted to the housing.
In the embodiment of the application, the occupied area of the non-display area of the display device of the terminal equipment is small, which is beneficial to realizing the ultra-narrow frame of the terminal equipment. Moreover, the quality of the touch module in the display device is high, so that the quality of the terminal equipment is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.
Fig. 1 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a display device of the terminal device shown in fig. 1;
FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 taken along line A-A in a first embodiment;
FIG. 4 is a schematic structural diagram of a touch module of the display device shown in FIG. 2 in a first embodiment in one state;
FIG. 5 is a schematic view of a portion of the display device shown in FIG. 4;
FIG. 6 is a schematic cross-sectional view of the display device shown in FIG. 4 along line B-B in a first implementation;
FIG. 7 is a schematic view of a portion of the display device shown in FIG. 6 at another angle;
FIG. 8 is a schematic cross-sectional view of the display device shown in FIG. 4 along line B-B in a second implementation;
FIG. 9 is a schematic cross-sectional view of the display device shown in FIG. 4 along line B-B in a third implementation;
FIG. 10 is a schematic cross-sectional view of the display device shown in FIG. 4 along line B-B in a fourth implementation;
FIG. 11 is a schematic cross-sectional view of the display device of FIG. 4 taken along line B-B in a fifth embodiment;
FIG. 12 is a schematic cross-sectional view of the display device shown in FIG. 4 taken along line B-B in a sixth implementation;
FIG. 13 is a schematic cross-sectional view of the structure of FIG. 2 taken along line A-A in a second embodiment;
FIG. 14 is a schematic cross-sectional view of the structure of FIG. 2 taken along line A-A in a third embodiment;
FIG. 15 is a schematic view showing a configuration of a state in a fourth embodiment of the display device shown in FIG. 2;
fig. 16 is a partial structural view of the display device shown in fig. 15;
fig. 17 is a schematic cross-sectional view of the display device shown in fig. 15 taken along the line C-C.
Detailed Description
The embodiments of the present application will be described below with reference to the drawings.
Referring to fig. 1 to fig. 3, fig. 1 is a schematic structural diagram of a terminal device provided in an embodiment of the present application; fig. 2 is a schematic structural diagram of a display device of the terminal device shown in fig. 1; fig. 3 is a schematic cross-sectional view of the structure of fig. 2 taken along line a-a in a first embodiment.
The embodiment of the application provides a terminal device 100. The terminal device 100 may be a mobile phone, a tablet computer, an e-reader, a notebook computer, a vehicle-mounted device, a wearable device, or the like. In the embodiment of the present application, the terminal device 100 is described as an example of a mobile phone.
The terminal apparatus 100 includes a display device 101 and a housing 102. The display device 101 is mounted to the housing 102. The display device 101 may be any product or component having a display function. The display device 101 includes a display panel 11 and a touch module 12. The touch module 12 is located on the light emitting side of the display panel 11. The display panel 11 is used for displaying a screen. The touch module 12 is used for sensing touch operation of the contact. The contacts may be user fingers, touch pens, etc.
The display panel 11 may include any one of the following panels, for example: a Light Emitting Diode (LED) panel, a Liquid Crystal Display (LCD) panel, an Organic Light Emitting Diode (OLED) panel, a quantum dot light emitting diode (QLED) panel, or a micro-scale light emitting diode (uLED) panel.
In the embodiment of the present application, the description is given taking the display panel 11 as a flexible display panel as an example. Specifically, in the embodiment of the present application, the description is given by taking the display panel 11 as an organic light emitting diode panel as an example. Since the organic light emitting diode panel does not require a backlight unit, the thickness of the display panel 11 is greatly reduced.
In the embodiment of the present application, the display panel 11 is an organic light emitting diode, which greatly reduces the thickness of the display device 101, thereby facilitating the lightness, thinness and flexibility of the display device 101.
The touch module 12 includes a touch layer 21, a linear polarizer 22 and a cover 23. The touch layer 21, the linear polarizer 22 and the cover plate 23 are sequentially located on the light emitting side of the display panel 11, and the linear polarizer 22 is located on the side of the touch layer 21 away from the display panel 11. That is, the display device 101 includes the display panel 11, the touch layer 21, the linear polarizer 22, and the cover plate 23, which are sequentially disposed. The cover 23 faces the user when the user uses the terminal device 100. The cover plate 23 has the functions of impact resistance, scratch resistance, oil stain resistance, fingerprint resistance, light transmittance enhancement and the like. The cover 23 functions to protect the touch layer 21. The touch layer 21 is capable of sensing a touch operation of the contact.
The display device 101 can be a flexible display screen or a rigid display screen. When the display device 101 is a flexible display screen, the touch module 12 is bendable. When the display module is a rigid display screen, the touch module 12 can have no bending property. In the embodiment of the present application, the display device 101 is described as an example of a flexible display panel. That is, in the embodiment of the present application, the touch layer 21, the linear polarizer 22 and the cover plate 23 are flexible.
The touch module 12 further includes a transparent optical adhesive 24. The transparent optical adhesive 24 is located on the side of the linear polarizer 22 away from the cover plate 23. That is, the linear polarizer 22 is located between the cover plate 23 and the transparent optical adhesive 24. In the first embodiment of the present application, the linear polarizer 22 is directly coated on the cover plate 23. The cover plate 23 coated with the linear polarizer 22 is attached to the touch layer 21 through the transparent optical adhesive 24.
In the embodiment of the present application, the touch layer 21 and the cover plate 23 coated with the linear polarizer 22 are directly bonded by the transparent optical adhesive 24, so that the integration process of the touch module 12 is simpler, and the production efficiency of the touch module 12 is improved.
In other embodiments, the linear polarizer 22 can also be directly coated on the side of the touch layer 21 facing the cover 23. The touch layer 21 coated with the linear polarizer 22 is attached to the cover plate 23 through the transparent optical adhesive 24. That is, in the embodiment of the present application, there is no limitation on whether the linear polarizer 22 is coated on the surface of the cover plate 23 or the surface of the touch layer 21. In the first embodiment of the present application, the linear polarizer 22 is coated on the cover plate 23 for illustration.
The touch layer 21 includes a quarter wave plate 211. The quarter wave plate 211 is stacked with the linear polarizer 22. The quarter-wave plate 211 is arranged in stack with the cover plate 23. The linear polarizer 22 is laminated on the surface of the cover plate 23 facing the quarter-wave plate 211. The quarter-wave plate 211 and the linear polarizer 22 are both located on the light-emitting side of the display panel 11. The display panel 11 is located on a side of the quarter-wave plate 211 facing away from the linear polarizer 22. When entering the touch module 12, the external light passes through the linear polarizer 22 and then the quarter-wave plate 211.
The quarter-wave plate 211 is a birefringent single crystal plate with a certain thickness. The optical characteristics of the quarter-wave plate 211 correspond to the characteristics of R0(450nm)/R0(550nm) <0.85, R0(550nm)/R0(550nm) <1, and R0(650nm)/R0(550nm) < 1.2. Wherein R0 ═ (nx-ny) d, d is the coating thickness, and nx and ny are the refractive indices in the in-film direction perpendicular to the phase-entering axis direction. The linear polarizer 22 and the quarter wave plate 211 form a circular polarizer for reducing reflection. The external ambient light is converted into linearly polarized light after passing through the polarizer 22, and the linearly polarized light is converted into circularly polarized light after passing through the quarter wave plate 211. After the ambient light finally forms circularly polarized light, the circularly polarized light is blocked and cannot be reflected out in the circularly polarized light sheet, so that the circularly polarized light sheet can effectively resist the ambient light, the interference of the ambient light to the display panel 11 is reduced, and the quality of the display device 101 is improved.
The touch layer 21 further includes a touch trace 212. The touch trace 212 is located on the surface of the quarter wave plate 211. The touch trace 212 can sense a touch operation of the contact. The touch traces 212 and the quarter wave plate 211 form a touch layer 21 for sensing a touch in the display device 101. In the embodiment of the present application, the touch trace 212 is located on the surface of the quarter wave plate 211. That is, the quarter wave plate 211 is used as a substrate of the touch layer 21.
In the embodiment of the present application, the touch trace 212 is located on the surface of the quarter-wave plate 211, and the quarter-wave plate 211 is used as the substrate of the touch trace 212, so that the substrate of the touch trace 212 in the conventional technology is reduced, and the thickness of the touch module 12 is reduced, thereby reducing the thickness of the display device 101, and making the terminal device thinner and more flexible. Wherein the thickness of the quarter wave plate 211 can be reduced to about 10 microns or even smaller.
For example, in one embodiment, the quarter wave plate 211 is made of a liquid crystal material. The quarter wave plate 211 made of the liquid crystal material can reduce the thickness of the quarter wave plate 211, so that the thickness of the touch module 12 is further reduced. Specifically, the quarter wave plate 211 using a liquid crystal material enables the thickness of the quarter wave plate 211 to be in the range of 1 to 3 micrometers.
In another embodiment, quarter wave plate 211 employs nanoimprint technology. The quarter wave plate 211 can reduce the thickness of the quarter wave plate 211 by using a nanoimprint technology, so that the thickness of the touch module 12 is further reduced. Specifically, the quarter wave plate 211 employs a nanoimprint technique such that the thickness of the quarter wave plate 211 is in a range of 0.8 micrometers to 1.2 micrometers.
Further, referring to fig. 3 and fig. 4, fig. 4 is a schematic structural diagram of a state of the touch module 12 of the display device 101 shown in fig. 2 in the first embodiment. Specifically, the structure shown in fig. 3 is a state in which the touch layer 21 is mounted in the display device 101. At this time, a part of the touch layer 21 is bent with respect to another part of the touch layer 21. The structure shown in fig. 4 is a state where the touch layer 21 is not bent.
The touch trace 212 includes a touch electrode 2121 and a leading line 2122. The lead-out line 2122 is a line led out from the touch electrode 2121. The outlet 2122 is finally connected to a driving circuit (or a driving chip, not shown) through the flexible printed circuit board 25, so that the driving circuit can transmit a control signal to the display device 101 or receive a sensing signal, so that the display device 101 has a touch function.
As shown in fig. 4, the lead-out wires 2122 are located at the bottom and both sides and finally converge on the flexible printed circuit board 25 at the bottom. Fig. 4 only shows the touch traces 212 in the trace area 214, and does not show the touch traces 212 in the touch area 213. That is, fig. 4 only shows the distribution of the lead lines 2122, and does not show the specific distribution of the touch electrodes 2121.
On the basis of realizing the electrical connection, the lead-out wire 2122 can also be matched with the quarter-wave plate 211 to be freely deformed, and cannot obstruct the original state, so that the lead-out wire can be randomly bent in all directions and all parts, and excellent conductive performance is kept.
The touch electrode 2121 can be a metal mesh (mat mesh), a conductive polymer (conductive polymer), or a silver nanowire (silver nanowire). The materials have excellent conductive performance, optical performance and flexibility, can be freely bent under the action of external force, and can automatically return to the original shape along with the substrate after the external force is removed. The outgoing line 2122 can be a copper wire, a molybdenum aluminum molybdenum wire, or a graphene wire. In the embodiment of the present application, the materials used for the touch electrodes 2121 and the lead lines 2122 are not limited. That is, in the embodiment of the present application, the material used for the touch trace 212 is not limited.
The display device 102 includes a touch area 213 and a routing area 214. The routing area 214 is located at the periphery of the touch area 213. The touch electrode 2121 is located in the touch area 213, and the leading line 2122 is located in the routing area 214. In the embodiment of the present application, the lead lines 2122 are bent with respect to the touch electrodes 2121. That is, the routing area 214 is bent with respect to the touch area 213. As shown in fig. 3, the lead lines 2122 are bent with respect to the touch electrodes 2121. That is, the routing area 214 is bent with respect to the touch area 213. As shown in fig. 4, the lead lines 2122 are not bent with respect to the touch electrodes 2121. That is, the routing area 214 is not bent with respect to the touch area 213. The touch area 213 is a display area of the display device 101, and the routing area 214 is a non-display area of the display device 101. The routing area 214 is bent with respect to the touch area 213, so that the area occupied by the non-display area of the display device 101 is smaller, and the narrow frame of the display device 101 is realized.
Further, referring to fig. 3 to 5, fig. 5 is a schematic partial structure diagram of the display device 101 shown in fig. 4. Specifically, fig. 5 is a top view of the quarter wave plate 211 in the display device 101 shown in fig. 4. The quarter wave plate 211 includes a first face 2111 and a second face 2112 which are opposite to each other. First face 2111 faces linear polarizer 22. As shown in fig. 3, the touch trace 212 is located on the first side 2111. Transparent optical adhesive 24 is disposed between linear polarizer 22 and first face 2111.
In other embodiments, the touch trace 212 can be located on the second side 2112, and can also be located on the first side 2111 and the second side 2112. That is, in the embodiment of the present application, no limitation is imposed on which surface of the quarter-wave plate 211 the touch trace 212 is specifically located. In the first embodiment of the present application, the touch trace 212 is located on the first face 2111 for illustration.
The quarter wave plate 211 includes a first portion 2113 and a second portion 2114 located at the periphery of the first portion 2113. The first portion 2113 is located in the touch area 213, and the second portion 2114 is located in the routing area 214. The first portion 2113 is aligned with the linear polarizer 22. The touch trace 212 is located in the first portion 2113 and the second portion 2114. Specifically, the touch electrode 2121 of the touch trace 212 is located at the first portion 2113, and the leading line 2122 of the touch trace 212 is located at the second portion 2114.
When the touch module 12 is mounted in the display device 101, the lead lines 2122 are bent relative to the touch electrodes 2121. That is, the touch trace 212 located in the second portion 2114 is bent with respect to the touch trace 212 located in the first portion 2113. If the thickness of the bending portion is too large, the bending strain will be too large, and the touch trace 212 is easily broken, which affects the quality of the touch module 12.
In the embodiment of the present application, on one hand, the linear polarizer 22 faces the first portion 2113, and the bent touch trace 212 is located on the second portion 2114, so that the linear polarizer 22 and the bent touch trace 212 of the second portion 2114 are arranged in a staggered manner, and the thickness above the bent touch trace 212 is reduced, thereby reducing the thickness of the touch layer 21 of the bent portion, avoiding the situation that the touch trace 212 is broken due to an excessively large bending strain, and improving the quality of the touch module 12. On the other hand, the touch trace 212 is located on the surface of the quarter-wave plate 211, and the thickness of the quarter-wave plate 211 is smaller, so that the thickness of the touch layer 21 is smaller, and the condition that the touch trace 212 is broken due to an excessively large bending strain is further avoided, thereby improving the quality of the touch module 12.
Further, referring to fig. 4 and 5, first portion 2113 includes a first edge 2115 and a second edge 2116 connecting first edge 2115. Second portion 2114 includes a first region 2117 connecting first edge 2115 and a second region 2118 connecting second edge 2116. The width of the first region 2117 is greater than the width of the second region 2118. The flexible printed circuit board 25 is connected to the second region 2118. As shown in fig. 4, the width of the first region 2117 is denoted by D1, and the width of the second region 2118 is denoted by D2. The width of the first region 2117 is greater than the width of the second region 2118, i.e., D1 is greater than D2.
Wherein, when the user is using the terminal device 100, the first region 2117 is located at the bottom of the terminal device 100, and the second region 2118 is located at the side of the terminal device 100. In other embodiments, the first region 2117 can also be located on the top of the terminal device 100. In the embodiment of the present application, the first region 2117 is located at the periphery of the terminal device 100, and there is no limitation on which side of the terminal device 100 the first region 2117 is located.
In the present embodiment, the lead-out lines 2122 are finally converged to the first region 2117, and are connected to the chip through the flexible printed circuit board 25. The first region 2117 of the second portion 2114 is bent with respect to the first portion 2113, so that the non-display area of the display device 101 is reduced, and a narrow bezel of the display device 101 is facilitated.
Further, referring to fig. 6 to 8, fig. 6 is a schematic cross-sectional view of the display device shown in fig. 4 along the line B-B in the first implementation manner; FIG. 7 is a schematic structural diagram of a portion of the display device 101 shown in FIG. 6 at another angle; fig. 8 is a schematic cross-sectional view of the display device shown in fig. 4 along the line B-B in a second implementation. Specifically, fig. 7 is a top view of the display device 101 shown in fig. 6 illustrating the touch trace 212.
The touch trace 212 includes a first detection trace 2123 and a second detection trace 2124. The first detection track 2123 and the second detection track 2124 are insulated from each other. The touch trace 212 is located on the surface of the quarter-wave plate 211 close to the linear polarizer 22. The touch trace 212 is located between the linear polarizer 22 and the quarter wave plate 211.
The first detecting trace 2123 and the second detecting trace 2124 are staggered and do not overlap with each other, so as to avoid mutual interference between signals of the first detecting trace 2123 and the second detecting trace 2124, which makes the touch detection impossible.
In the embodiment of the present application, the first detecting trace 2123 is taken as a sensing line, and the second detecting trace 2124 is taken as a driving line for example. The first detection trace 2123 is led out from both side edges of the terminal device 100, and the second detection trace 2124 is led out from the bottom of the terminal device 100. In other embodiments, the first detection trace 2123 can be a driving line, and the second detection trace 2124 can be a sensing line.
As shown in fig. 7, the first detection track 2123 and the second detection track 2124 cross each other and are arranged in the same layer. That is, in the first implementation manner of the present application, the first detecting trace 2123 and the second detecting trace 2124 are taken as an example for description. In other implementations, the first detection trace 2123 and the second detection trace 2124 can be different layers.
In the embodiment of the present application, the first detecting trace 2123 and the second detecting trace 2124 are disposed on the same layer, so as to further reduce the thickness of the touch layer 21, thereby further reducing the thickness of the touch layer 21 at the bending portion, avoiding the situation that the touch trace 212 is broken due to an excessive bending strain, and further improving the quality of the touch module 12.
The first detecting trace 2123 and the second detecting trace 2124 are disposed in the same layer, and can be located on the surface of the quarter-wave plate 211 close to the linear polarizer 22. The first detection trace 2123 and the second detection trace 2124 can also be located on the surface of the quarter wave plate 211 away from the linear polarizer 22. In this embodiment, there is no limitation on whether the touch trace 212 is located on the first side 2111 or the second side 2112. As shown in fig. 6, first detection trace 2123 and second detection trace 2124 are located at first face 2111. As shown in fig. 8, first detection trace 2123 and second detection trace 2124 are located at second side 2112.
Further, referring to fig. 9 and 10 together, fig. 9 is a schematic cross-sectional view of the display device shown in fig. 4 along the line B-B in a third implementation manner; fig. 10 is a schematic cross-sectional view of the display device shown in fig. 4 taken along line B-B in a fourth implementation. Most of the technical solutions of the display device 101 shown in fig. 9 and 10 that are the same as the display device 101 are not repeated.
In this embodiment, the first detection trace 2123 and the second detection trace 2124 are stacked on the same side of the quarter wave plate 211. That is, the first detecting trace 2123 and the second detecting trace 2124 are layered. An insulating layer 26 is disposed between the first detecting trace 2123 and the second detecting trace 2124. The insulating layer 26 prevents the first detecting trace 2123 and the second detecting trace 2124 from interfering with each other.
In this embodiment, the first detecting trace 2123 and the second detecting trace 2124 are disposed at an interval, so as to reduce signal interference between the first detecting trace 2123 and the second detecting trace 2124, reduce or eliminate parasitic capacitance generated between the first detecting trace 2123 and the second detecting trace 2124, and effectively improve sensitivity and accuracy of touch control. In addition, the first detection trace 2123 and the second detection trace 2124 are insulated by the insulating layer 26, so that the touch electrode 2121 is not required to be bridged by separately arranging the insulating layer 26 or manufacturing an insulating pattern between layers, the manufacturing process is simplified, and the yield of products is improved.
In the embodiment of the present application, there is no limitation on which side of the quarter-wave plate 211 the first detection trace 2123 and the second detection trace 2124 are located at the same time. As shown in fig. 9, in the third implementation, the first detection trace 2123 and the second detection trace 2124 are located on a side of the quarter-wave plate 211 close to the linear polarizer 22. That is, the first detection trace 2123 and the second detection trace 2124 are located above the quarter wave plate 211. As shown in fig. 10, in the fourth implementation, the first detection trace 2123 and the second detection trace 2124 can be located on the side of the quarter-wave plate 211 away from the linear polarizer 22 at the same time. The first detection trace 2123 and the second detection trace 2124 are located below the quarter wave plate 211.
In this embodiment, the order of stacking the first detecting trace 2123 and the second detecting trace 2124 is not limited. As shown in fig. 9 and 10, in the embodiment of the present application, the first detection trace 2123 is located between the second detection trace 2124 and the quarter wave plate 211. In other embodiments, the first detection trace 2123 can also be located on a side of the second detection trace 2124 away from the quarter wave plate 211. That is, the second detection trace 2124 can also be located between the first detection traces 2123.
Further, referring to fig. 11 and 12 together, fig. 11 is a schematic cross-sectional view of the display device shown in fig. 4 taken along the line B-B in the fifth embodiment; fig. 12 is a schematic cross-sectional view of the display device shown in fig. 4 taken along line B-B in a sixth implementation. Most of the technical solutions of the display device 101 shown in fig. 11 and 12 that are the same as the display device 101 are not repeated.
As shown in fig. 11, in the fifth implementation, first detection trace 2123 is located at first face 2111 and second detection trace 2124 is located at second face 2112. As shown in fig. 12, in a sixth implementation, first detection trace 2123 is located at second face 2112, and second detection trace 2124 is located at first face 2111.
In this embodiment, the first detecting trace 2123 and the second detecting trace 2124 are disposed at an interval, so as to reduce signal interference between the first detecting trace 2123 and the second detecting trace 2124, reduce or eliminate parasitic capacitance generated between the first detecting trace 2123 and the second detecting trace 2124, and effectively improve sensitivity and accuracy of touch control. In addition, the first detection trace 2123 and the second detection trace 2124 are insulated by the quarter-wave plate 211, so that the thickness of the touch module 12 is further reduced by reducing the insulating layer 26.
Further, referring to fig. 2 and 13 together, fig. 13 is a schematic cross-sectional view of the structure shown in fig. 2 taken along the line a-a in the second embodiment. Most technical solutions of the second embodiment that are the same as those of the first embodiment are not described again. The structure of the display device 101 shown in this embodiment can be combined with the structure of any one of the display devices 101 shown in fig. 6 to 12.
The transparent optical adhesive 24 is located between the linear polarizer 22 and the cover plate 23. That is, the transparent optical glue 24 is located on the side of the linear polarizer 22 close to the cover plate 23. In this embodiment, the linear polarizer 22 is located on the surface of the touch layer 21.
Specifically, when the first detection trace 2123 and the second detection trace 2124 are crossed and arranged on the same layer, the touch trace 212 is located on the first face 2111 and contacts the linear polarizer 22; alternatively, the touch trace 212 is located on the second surface 2112, and the linear polarizer 22 directly contacts the first surface 2111. When the first detection trace 2123 and the second detection trace 2124 are stacked on the same side of the quarter-wave plate 211 and both are located on a side of the quarter-wave plate 211 close to the linear polarizer 22, the first detection trace 2123 is located on the first surface 2111, and the second detection trace 2124 is contacted with the linear polarizer 22; alternatively, the second detection trace 2124 is located on the first surface 2111, and the first detection trace 2123 is in contact with the polarizer 22. When the first detection trace 2123 and the second detection trace 2124 are located on the first face 2111 and the second face 2112, respectively, the first detection trace 2123 is located on the first face 2111 and contacts the polarizer 22, and the second detection trace 2124 is located on the second face 2112; alternatively, the second detection trace 2124 is located on the first side 2111 and contacts the linear polarizer 22, and the first detection trace 2123 is located on the second side 2112.
Further, referring to fig. 2 and 14, fig. 14 is a schematic cross-sectional view of the structure shown in fig. 2 taken along the line a-a in a third embodiment. Most technical solutions of the third embodiment that are the same as those of the previous embodiments are not described again. The structure of the display device 101 shown in this embodiment can be combined with the structure of any one of the display devices 101 shown in fig. 6 to 12.
One surface of the linear polarizer 22 contacts the cover 23, and the other surface thereof contacts the touch layer 21. That is, in the embodiment of the present application, only one linear polarizer 22 is disposed between the cover plate 23 and the touch layer 21. The linear polarizer 22 can be directly coated on the surface of the cover plate 23 facing the touch layer 21, and the linear polarizer 22 can also be directly coated on the surface of the jeans cover plate 23 facing the touch layer 21. In the embodiments of the present application, this is not limited.
Specifically, when the first detection trace 2123 and the second detection trace 2124 are crossed and arranged on the same layer, the touch trace 212 is located on the first face 2111 and contacts the linear polarizer 22; alternatively, the touch trace 212 is located on the second surface 2112, and the linear polarizer 22 directly contacts the first surface 2111. When the first detection trace 2123 and the second detection trace 2124 are stacked on the same side of the quarter-wave plate 211 and both are located on one side of the quarter-wave plate 211 close to the linear polarizer 22, the first detection trace 2123 is located on the first surface 2111, and the second detection trace 2124 is contacted with the linear polarizer 22; alternatively, the second detection trace 2124 is located on the first surface 2111, and the first detection trace 2123 is in contact with the polarizer 22. When the first detection trace 2123 and the second detection trace 2124 are located on the first face 2111 and the second face 2112, respectively, the first detection trace 2123 is located on the first face 2111 and contacts the polarizer 22, and the second detection trace 2124 is located on the second face 2112; alternatively, the second detection trace 2124 is located on the first side 2111 and contacts the linear polarizer 22, and the first detection trace 2123 is located on the second side 2112.
In this embodiment, only one linear polarizer 22 is disposed between the cover 23 and the touch layer 21, so that the transparent optical adhesive 24 between the cover 23 and the touch layer 21 is reduced, thereby further reducing the thickness of the touch module 12.
Further, referring to fig. 15 to 17, fig. 15 is a schematic structural view of the display device shown in fig. 2 in a state of a fourth embodiment; fig. 16 is a partial structural view of the display device shown in fig. 15; fig. 17 is a schematic cross-sectional view of the display device shown in fig. 15 taken along the line C-C. Most technical solutions of the fourth embodiment that are the same as those of the previous embodiments are not described again. The structure of the display device 101 shown in this embodiment can be combined with the structure of any one of the display devices 101 shown in fig. 6 to 14.
The first portion 2113 further includes a third edge 2119. The third edge 2119 is disposed opposite the first edge 2115 and connects the second edge 2116. The second portion 2114 further includes a third region 2110 connecting the third edges 2119. The width of the third region 2110 is greater than the width of the second region 2118. As shown in fig. 12, the width of the third region 2110 is denoted by D3. The width of the third region 2110 is greater than the width of the second region 2118, i.e., D3 is greater than D2.
Wherein, when the user is using the terminal device 100, the first region 2117 is located at the bottom of the terminal device 100, the third region 2110 is located at the top of the terminal device 100, and the second region 2118 is located at the side of the terminal device 100.
The touch module 12 includes a first flexible printed circuit board 251 and a second flexible printed circuit board 252. The upper half lead-out lines 2122 converge to the third region 2110, and are connected to the chip through the first flexible printed circuit board 251. The lead-out lines 2122 of the lower half converge to the first region 2117, and are connected to the chip via the second flexible printed circuit board 252. Each of the first region 2117 and the second region 2118 can be bent with respect to the first portion 2113, thereby greatly reducing the area of the non-display region at the bottom end and the top end of the terminal device 100.
In the embodiment of the application, the touch traces 212 are respectively led out from two opposite sides, so that the touch traces 212 can be crossed or overlapped in space, and further an ultra-narrow bezel is implemented.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and the changes or substitutions should be covered within the scope of the present application; the embodiments and features of the embodiments of the present application may be combined with each other without conflict. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (11)
1. A touch module is characterized by comprising a quarter-wave plate, a touch wire and a linear polarizer, wherein the quarter-wave plate and the linear polarizer are arranged in a laminated mode, the quarter-wave plate comprises a first surface and a second surface which are arranged in an opposite mode, the first surface faces the linear polarizer, and the touch wire is located on the first surface and/or the second surface;
the quarter-wave plate comprises a first part and a second part located on the periphery of the first part, the first part is opposite to the linear polarizer, and the touch routing is located on the first part and the second part.
2. The touch module of claim 1, wherein the first portion comprises a first edge and a second edge connecting the first edge, the second portion comprises a first area connecting the first edge and a second area connecting the second edge, and the width of the first area is greater than the width of the second area.
3. The touch module of claim 2, wherein the first portion further comprises a third edge disposed opposite to the first edge and connected to the second edge, and the second portion further comprises a third region connected to the third edge, and the third region has a width greater than that of the second region.
4. The touch module according to any one of claims 1 to 3, wherein the touch traces include a first detection trace and a second detection trace;
the first detection wires and the second detection wires are crossed and arranged in the same layer; or, the first detection trace and the second detection trace are stacked on the same side of the quarter-wave plate.
5. The touch module of claim 4, wherein the touch trace is located on the first surface and contacts the linear polarizer; or, the touch trace is located on the second surface.
6. The touch module of claim 4, further comprising a cover plate and a transparent optical adhesive, wherein the cover plate and the quarter-wave plate are stacked, the linear polarizer is stacked on a surface of the cover plate facing the quarter-wave plate, the transparent optical adhesive is located between the linear polarizer and the first surface, and the touch trace is located on the first surface.
7. The touch module according to any one of claims 1 to 3, wherein the touch traces include a first detection trace and a second detection trace, and the first detection trace and the second detection trace are respectively located on the first surface and the second surface.
8. The touch module of claim 7, wherein the first detection trace is located on the first surface and contacts the linear polarizer; or the second detection routing wire is positioned on the first surface and contacts the linear polarizer.
9. The touch module of claim 7, further comprising a cover plate and a transparent optical adhesive, wherein the cover plate and the quarter-wave plate are stacked, the linear polarizer is stacked on a surface of the cover plate facing the quarter-wave plate, the transparent optical adhesive is located between the linear polarizer and the first surface, and the first detection trace is located on the first surface; or, the second detection trace is located on the first surface.
10. A display device, comprising a display panel and the touch module of any one of claims 1 to 9, wherein the display panel is located on a side of the quarter-wave plate facing away from the linear polarizer.
11. A terminal device comprising a housing and the display device according to claim 10, wherein the display device is mounted to the housing.
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| CN201920797942.5U CN210072572U (en) | 2019-05-29 | 2019-05-29 | Touch module, display device and terminal equipment |
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| CN201920797942.5U CN210072572U (en) | 2019-05-29 | 2019-05-29 | Touch module, display device and terminal equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112116879A (en) * | 2020-10-14 | 2020-12-22 | 武汉华星光电半导体显示技术有限公司 | Multi-curved-surface display device |
| WO2021088271A1 (en) * | 2019-11-08 | 2021-05-14 | 京东方科技集团股份有限公司 | Array substrate, fabrication method therefor, and display device |
| WO2021225971A1 (en) * | 2020-05-08 | 2021-11-11 | Apple Inc. | Cut and folded display with 3d compound curvature |
| 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 |
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2019
- 2019-05-29 CN CN201920797942.5U patent/CN210072572U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021088271A1 (en) * | 2019-11-08 | 2021-05-14 | 京东方科技集团股份有限公司 | Array substrate, fabrication method therefor, and display device |
| US11468832B2 (en) | 2019-11-08 | 2022-10-11 | Beijing Boe Technology Development Co., Ltd. | Array substrate and method for manufacturing same, display panel, and display device |
| US11893930B2 (en) | 2019-11-08 | 2024-02-06 | Boe Technology Group Co., Ltd. | Array substrate, display panel, and display device |
| WO2021225971A1 (en) * | 2020-05-08 | 2021-11-11 | Apple Inc. | Cut and folded display with 3d compound curvature |
| CN112116879A (en) * | 2020-10-14 | 2020-12-22 | 武汉华星光电半导体显示技术有限公司 | Multi-curved-surface 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 |
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