CN107491209B - Touch control display device - Google Patents
Touch control display device Download PDFInfo
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- CN107491209B CN107491209B CN201710689573.3A CN201710689573A CN107491209B CN 107491209 B CN107491209 B CN 107491209B CN 201710689573 A CN201710689573 A CN 201710689573A CN 107491209 B CN107491209 B CN 107491209B
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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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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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Abstract
The invention relates to the technical field of electronic devices, in particular to a touch display device, which comprises a flexible display panel and a plurality of electrodes; the flexible display panel comprises a base layer, an encapsulation layer and a plurality of retaining walls, wherein the base layer is provided with a plurality of retaining wall setting areas, and the retaining wall setting areas are located in a non-display area of the touch display device; the retaining wall is packaged between the base layer and the packaging layer, and in the thickness direction of the touch display device, the projection of the retaining wall to the base layer falls into the retaining wall setting area; the electrode is used for detecting the deformation of the touch display device, and in the thickness direction of the touch display device, the electrode projects the base layer to fall into the retaining wall setting area. The touch display device is simpler in structure and lower in cost, and the structure can be better applied to a portable and bendable flexible display.
Description
Technical Field
The invention relates to the technical field of electronic devices, in particular to a touch display device.
Background
For a touch display device, touch operation is an important human-computer interaction operation, and therefore, accurate detection of relevant parameters of touch operation is one of important means for ensuring user experience of the touch display device.
In the conventional technology, a sensor film (sensor film) or a pressure sensitive coil and other components need to be added in a touch display device to detect a touch operation, but such a method has the defects of high cost, complicated lamination and incapability of being well applied to a light and bendable flexible display.
Disclosure of Invention
The invention provides a touch display device, which is used for simplifying the structure of the touch display device.
The touch display device provided by the invention comprises a flexible display panel and a plurality of electrodes;
the flexible display panel comprises a base layer, an encapsulation layer and at least one retaining wall, wherein the base layer is provided with at least one retaining wall arrangement area, and the retaining wall arrangement area is positioned in a non-display area of the touch display device;
the retaining wall is packaged between the base layer and the packaging layer, and in the thickness direction of the touch display device, the projection of the retaining wall to the base layer falls into the retaining wall setting area;
the electrode is used for detecting the deformation of the touch display device, and in the thickness direction of the touch display device, the electrode projects the base layer to fall into the retaining wall setting area.
The technical scheme provided by the invention can achieve the following beneficial effects:
compared with the mode introduced in the background art, the touch display device provided by the invention has the advantages that the deformation of the touch display device is detected by arranging the electrodes, and the electrodes are arranged in the touch display device simply and conveniently, so that the structure of the touch display device is simpler and the cost is lower while the deformation detection is realized, and the structure can be better applied to a portable and bendable flexible display.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Fig. 1 is a schematic structural diagram of a touch display device according to an embodiment of the present invention;
FIG. 2 is a partial sectional view taken along line A-A of the touch display device shown in FIG. 1;
fig. 3 is a simulation diagram of a touch display device according to an embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with yet another embodiment;
FIG. 5 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 6 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 7 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 8 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 9 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 10 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 11 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 12 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 13 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 14 is a partial cross-sectional view of the touch display device taken along the line A-A in accordance with still another embodiment;
FIG. 15 is a top view of the touch display device shown in FIG. 14;
fig. 16 is a schematic structural diagram of a touch display device in yet another embodiment.
Reference numerals:
100-touch display device;
110-a flexible display panel;
111-a base layer;
111 a-retaining wall setting area;
112-thin film transistors;
112 a-source drain metal layer;
112 b-gate;
112 c-active layer;
113-an anode;
114-a cathode;
115-a light emitting layer;
116-an encapsulation layer;
116 a-a first inorganic layer;
116 b-an organic layer;
116c — a second inorganic layer;
117-retaining wall;
118-an interlayer metal layer;
119 a-a buffer layer;
119 b-a gate insulating layer;
119c — an interlayer insulating layer;
119 d-a passivation layer;
119 e-a planarization layer;
119 f-pixel definition layer;
120-electrode;
120 a-a first electrode;
120 b-a second electrode;
130-touch electrodes.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are only for illustrating the relative positional relationship, the layer thicknesses of some parts are exaggerated in a drawing manner for easy understanding, and the layer thicknesses in the drawings do not represent the proportional relationship of the actual layer thicknesses.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The following description is of the preferred embodiment for carrying out the invention and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the scope of the invention. The scope of the present invention is defined by the appended claims.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings. The thicknesses and shapes of the respective components in the drawings do not reflect the true scale of the display device, and are merely intended to schematically illustrate the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a touch display device according to an embodiment of the present invention, and the embodiment of the present invention provides a touch display device, which can implement a display function on one hand and can be used for a user to perform a touch operation on the other hand, so as to implement a corresponding control. The touch display device is provided with a display area A and a non-display area B, light is emitted from the display area A, touch operation performed in the display area A can be sensed, and the non-display area B is used for arranging a driving circuit and the like.
The touch display device may specifically include a flexible display panel 110 and a plurality of electrodes 120, where the flexible display panel 110 is mainly used for displaying, the electrodes 120 may be disposed in the non-display area B, and the electrodes 120 may sense a touch operation of a user, so as to determine a specific touch position and provide an execution basis for the corresponding touch operation.
As shown in fig. 2, fig. 2 is a partial sectional view of the touch display device shown in fig. 1 along the direction a-a. The flexible display panel 110 may include a base layer 111, a thin film transistor 112, an anode 113, a cathode 114, a light emitting layer 115, an encapsulation layer 116, a plurality of barriers 117, and the like, wherein:
the base layer 111 is a setting basis of each layer structure of the flexible display panel 110, for example, the base layer 111 may include a flexible substrate formed of any suitable insulating material having flexibility, and a material of the flexible substrate is formed of a polymer material such as Polyimide (PI), Polycarbonate (PC), polyether sulfone (PES), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), Polyarylate (PAR), or glass Fiber Reinforced Plastic (FRP). In addition, the base layer 111 may further include a buffer layer or a barrier layer covering an upper surface of the flexible substrate facing the display device, may be formed of an inorganic material or an organic material such as silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), aluminum oxide (AlOx), or aluminum nitride (AlNx), and the like, blocks oxygen and moisture, prevents diffusion of moisture or impurities through the flexible substrate, and provides a flat surface on the upper surface of the flexible substrate.
The base layer 111 is provided with a retaining wall setting region 111a corresponding to the non-display region B, and the retaining wall setting regions 111a are in one-to-one correspondence with the retaining walls 117. In one embodiment, the width of the retaining wall setting region 111a is less than or equal to 200 μm, and the width is in a direction of the width of the orthographic projection of the retaining wall 117 on the retaining wall setting region 111 a. Specifically, the projection of the retaining wall 117 onto the base layer 111 has an inner edge and an outer edge, the inner edge is located between the display area a and the outer edge of the touch display device, a shortest connection line between any one point on the inner edge and any one point on the outer edge is a first connection line, the width of the projection is the width of any one point on the inner edge or the outer edge, and the directions of the widths of any one point on the inner edge or the outer edge are the directions of the first connection lines, for example, the X directions at the points in fig. 1. If the retaining wall 117 is a straight strip structure, the length direction of the retaining wall 117 is the direction of the extension line of the retaining wall 117, and the direction of the width is the direction perpendicular to the length direction; if the dam 117 includes a curved portion, for example, a ring-shaped dam disposed around the display area a, and the dam 117 includes a curved portion at the corner, the width direction of the projection of the dam 117 at the corner onto the base layer 111 is perpendicular to the tangent line at any point of the curved portion and parallel to the base layer 111.
Preferably, the central axis of the retaining wall 117 in the length direction overlaps the central axis of the retaining wall disposition region 111a in the direction perpendicular to the plane of the base layer 111.
In addition, the distance between the opposite edge of the retaining wall 117 and the edge of the retaining wall setting area on the same side may be equal. Specifically, when the retaining wall 117 is an annular structure, the retaining wall 117 has a first inner annular edge and a first outer annular edge, and the corresponding retaining wall disposing region is also an annular region having a second inner annular edge and a second outer annular edge, and a distance between the first inner annular edge and the second inner annular edge may be equal to a distance between the first outer annular edge and the second outer annular edge. The distance between the dam setting region and the dam 117 is relatively short, so that the distance between the electrode 120 and the dam 117 is relatively short, and the detection accuracy of the electrode 120 is further improved. Further, the width of the dam setting region is preferably less than or equal to 100 μm, so that the distance between the dam setting region and the dam 117 is closer, the distance between the electrode 120 and the dam 117 is further shortened, and the detection accuracy of the electrode 120 is improved;
a plurality of thin film transistors 112 disposed on the base layer 111 for driving the anode 113, wherein the thin film transistors 112 may include a source/drain metal layer 112a, a gate electrode 112b, and an active layer 112 c; in fig. 2, the thin film transistor 112 has a top gate structure, and in other embodiments of the invention, the thin film transistor 112 may also have a bottom gate structure, for example, as shown in fig. 11, and fig. 11 is a cross-sectional view of the touch display device taken along a direction a-a.
The anodes 113 are arranged on the thin film transistors 112, and in each pixel, the anodes 113 are connected with the thin film transistors 112 in a one-to-one correspondence manner;
the cathode 114 is located above the anode 113, the cathode 114 may form an electric field with the anode 113, it should be noted that the positions of the anode 113 and the cathode 114 may also be changed, and light is emitted mainly according to whether the flexible display panel 110 adopts a top emission mode or a bottom emission mode, which is described herein by taking the example that the cathode 114 is located above the anode 113, and the related structure is correspondingly adjusted when the other mode is adopted;
the light emitting layer 115 is disposed between the anode 113 and the cathode 114, and may be an organic light emitting layer that emits light under the action of an electric field formed by the anode 113 and the cathode 114;
the encapsulation layer 116 is used to encapsulate the touch display device 100, and prevent moisture and other substances from entering the interior of the touch display device 100. The encapsulation layer 116 may be formed by stacking an organic layer and an inorganic layer, for example, the encapsulation layer 116 may include a first inorganic layer 116a, an organic layer 116b, and a second inorganic layer 116c, which are sequentially stacked. In addition, the base layer is provided with a retaining wall arrangement area, and the retaining wall arrangement area is used for arranging a retaining wall and can be positioned in a non-display area of the touch display device.
The retaining wall 117 is encapsulated between the base layer 111 and the encapsulation layer 116, and specifically, the retaining wall 117 is disposed at the retaining wall disposing region of the base layer 111, so that the retaining wall is located in the non-display region B of the touch display device 100. Specifically, in the thickness direction of the touch display device 100 (i.e., the thickness direction of the base layer), the projection of the retaining wall 117 onto the base layer 111 falls within the projection of the retaining wall setting area. Since the encapsulation layer 116 is generally formed by stacking an inorganic layer and an organic layer, the dam 117 can prevent the flow of the organic layer, thereby restricting the position of the organic layer.
The electrode 120 is used for detecting the deformation of the touch display device 100, when a touch operation occurs on the touch display device 100, the electrode 120 is subjected to an acting force, and then deforms, and through the deformation, the deformation of the touch display device 100 can be obtained. Specifically, when the electrode 120 deforms, the deformation of the touch display device 100 can be obtained through the resistance change of the electrode 120, and the deformation of the touch display device 100 can also be obtained through the capacitance change of the electrode 120.
When the deformation of the touch display device 100 is obtained by the resistance change of the electrodes 120, the deformation can be achieved by the resistance change of only a single electrode 120, or can be achieved by the resistance change of two or more electrodes 120. When the deformation of the touch display device 100 is obtained through the capacitance change of the electrodes 120, it is generally required to be achieved through the capacitance change of at least two electrodes 120, and specifically, the capacitance between the electrodes 120 is changed due to the change of the distance between the electrodes 120.
In the touch display device 100 provided by the embodiment of the invention, the electrodes 120 are arranged to detect the deformation of the touch display device, compared with the manner described in the background art, the electrodes 120 are arranged in the touch display device 100 simply and conveniently, so that the touch display device 100 has a simpler structure, is thinner and lighter, has a lower cost while realizing the detection of the deformation, and can be better applied to a portable and bendable flexible display.
In the embodiment of the present invention, the arrangement position of the electrode 120 may adopt the following scheme: in the thickness direction of the touch display device 100, the projection of the electrode 120 onto the base layer 111 falls into the projection of the barrier wall setting region. That is, the arrangement position of the electrode 120 may be associated with the arrangement position of the dam 117, for example, the projection of the electrode 120 onto the base layer 111 overlaps with the projection of the dam 117 onto the base layer 111, or the projection of the electrode 120 onto the base layer 111 and the projection of the dam 117 onto the base layer 111 are located at a position closer to each other although there is no overlapping portion, so that the electrode 120 is arranged near the dam 117.
The reason why the above-mentioned arrangement is adopted is that when there is a touch operation on the touch display device 100 or when the touch display device 100 is bent, the stress concentration at the position where the retaining wall 117 is located (i.e. at the retaining wall arrangement region) is relatively obvious. That is, the dam-disposing region is more easily deformed, and therefore, disposing the electrode 120 near the dam 117 can improve the sensitivity of the electrode 120, so that the touch sensitivity of the touch display device 100 is improved accordingly. Specifically, referring to fig. 3, fig. 3 is a simulation diagram of a touch display device according to an embodiment of the present invention, in fig. 3, an abscissa is a distance from a center of the flexible display panel 110 to a measurement point, and a unit is cm, and an ordinate is a stress applied to the measurement point, and a unit is N/m2C1 indicates the position of the retaining wall setting area before the touch display device 100 deforms, and C2 indicates the position of the retaining wall setting area after the touch display device 100 deforms, it can be seen that when the measurement point is in the retaining wall setting area, i.e. corresponding to the area with the abscissa as the attachment of 90cm, after the touch display device 100 deforms, the stress applied to the retaining wall setting area is at the level with the lightest gray scale, i.e. corresponding to the level indicated by the dotted arrow in fig. 3, and the deformation is greater than the deformation at other positions.
For the electrodes 120 to function as capacitors, at least two electrodes 120 or even more electrodes 120 are needed to detect the deformation of the touch display device 100 through the capacitance change. Compared with the electrode 120 serving as a capacitor, the electrode 120 serves as a resistor, so that when the deformation of the touch display device 100 is detected through the resistance change of the electrode 120, the bending change can be detected only through the resistance change of a single electrode 120, and therefore, the structure can be simplified, and the thinning can be realized. However, the electrode 120 is used as a resistor, and when the deformation of the touch display device 100 is detected through the resistance change of the electrode 120, the electrode 120 needs to be very sensitive. And the slight resistance value change of the resistor is not beneficial to ensuring the detection accuracy. Compared with other regions in the non-display region B of the touch display device 100, the stress concentration at the position of the dam 117 and the periphery thereof (i.e., at the dam installation region) is more obvious. That is to say, deformation takes place more easily in barricade setting region department, and the deformation degree is bigger, and is more obvious. Even if the deformation is slight, the dam-setting region is changed to a greater extent than other regions in the non-display region B. Therefore, the electrodes 120 are disposed near the barriers 117, which facilitates the detection of the electrodes and improves the reliability of the detection result.
In addition, the electrodes 120 are disposed in the non-display area B of the touch display device 100, so that the space occupied by the barriers 117 can be fully utilized, the size of the entire touch display device 100 can be controlled to be relatively small, and the arrangement of other components can be facilitated. Meanwhile, the scheme does not affect the wiring operation of the touch display device 100, and does not affect the effective area of the display area a of the touch display device 100.
In order to facilitate the control of the touch display device, a controller (not shown) may be further provided, and the controller is configured to perform corresponding display according to the signal variation of the electrode 120. For example, the controller provides the input signal to the electrode 120 and also receives the signal output from the electrode 120, and detects the signal variation data, so that the position of the deformation or the touch point can be determined based on the data.
In order to optimize the sensing effect of the electrode 120, the electrode 120 may be disposed between the dam 117 and the encapsulation layer 116, between the dam 117 and the base layer 111, or on a surface of the encapsulation layer 116 facing away from the dam 117. Wherein: as shown in fig. 2, when the electrode 120 is disposed between the dam 117 and the encapsulation layer 116, it is equivalent to the electrode 120 being located above the dam 117 and below the encapsulation layer 111; as shown in fig. 4, fig. 4 is a partial sectional view of the touch display device along the direction a-a, when the electrode 120 is disposed between the dam 117 and the base layer 111, it is equivalent to the electrode 120 being located below the dam 117; as shown in fig. 5, fig. 5 is a partial sectional view of the touch display device along the direction a-a, when the electrode 120 is disposed on a side surface of the encapsulation layer 116 away from the retaining wall 117, which is equivalent to the electrode 120 being located below the encapsulation layer 116.
Further, in the thickness direction of the touch display device 100, at least a portion of the projection of the electrode 120 onto the base layer 111 overlaps with the projection of the dam 117 onto the base layer 111, as shown in fig. 2, 4 and 6, where fig. 6 is a partial cross-sectional view of the touch display device along the direction a-a. That is, the electrode 120 is substantially located right above or below the dam 117, and thus, the distance between the electrode 120 and the dam 117 is closer, so that the sensing sensitivity of the electrode 120 can be improved to a greater extent.
As can be seen from the foregoing, the distance between the electrode 120 and the dam 117 directly affects the sensing accuracy of the electrode 120, and when the electrode 120 contacts the dam 117, the distance between the electrode 120 and the dam 117 is substantially minimized, so that in one embodiment, at least one electrode 120 contacts the dam 117, as shown in fig. 2 and 4. Alternatively, when the electrode 120 is provided in plural, each electrode 120 may be in contact with the dam 117, or as many electrodes 120 as possible may be in contact with the dam 117.
In order to reinforce the technical effect of the retaining wall 117, the number of the retaining wall 117 may be set to at least two. For example, as shown in fig. 7, fig. 7 is a partial sectional view of the touch display device along the direction a-a, and two retaining walls 117 may be provided. At this time, in the thickness direction of the touch display device 100, the projection of the electrode 120 overlaps with the projections of the at least two retaining walls 117. That is, the single electrode 120 is disposed corresponding to the at least two barriers 117, and since the barriers 117 have a certain distance therebetween and the barriers 117 themselves have a certain size, when the projection of the single electrode 120 overlaps the projection of the at least two barriers 117, the size of the single electrode 120 is increased, and thus when the electrode 120 is deformed due to the touch operation, the deformation is larger, so that the electrode 120 can sense the touch operation more sensitively. In addition, the projection of a single electrode 120 is overlapped with the projections of at least two retaining walls 117, so that the detection data of at least two stress concentration points (i.e. the positions of the retaining walls) can be obtained simultaneously, and the detection sensitivity and the data reliability of the electrode 120 are improved.
Specifically, when the projection of a single electrode 120 overlaps the projections of two barriers 117, the electrode 120 may be simultaneously in contact with the two barriers 117, i.e., a portion of the electrode 120 is in contact with one barrier 117 and another portion is in contact with the other barrier 117, so that the same electrode 120 is simultaneously in contact with the two barriers 117.
As can be seen from the foregoing, the touch display device 100 provided in the embodiment of the invention is a multi-layer structure, and thus after the arrangement position of the electrode 120 adopts the structure described in any of the foregoing embodiments, the layer where the electrode 120 is specifically located can be flexibly arranged, for example, the electrode 120 can be arranged as a layer alone, or can be arranged in the same layer as other layers, that is, when processing other layers, the required electrode 120 is processed at the same time. When the electrode 120 and other structures are disposed on the same layer, the structure and the processing process of the entire touch display device can be simplified, and the number of film layers of the touch display device can be reduced, so that the electrode 120 and other structures of the touch display device 100 can be disposed on the same layer. Further, all of the electrodes 120 may be disposed in the same layer.
Specifically, the active layer 112c of the flexible display panel 110 may be a P-type silicon layer, and the at least one electrode 120 may be disposed at the same layer as the P-type silicon layer. Due to the material characteristics of the P-type silicon layer, that is, the P-type silicon layer is easily deformed, after the electrode 120 and the P-type silicon layer are disposed on the same layer, the deformation of the electrode 120 is more obvious, and the sensing sensitivity of the electrode 120 is further improved.
In an alternative embodiment, the electrode 120 may be provided in a plurality, and each electrode 120 includes a first electrode 120a and a second electrode 120 b. In the direction of the base layer 111 pointing to the encapsulating layer 116, the two opposite sides of the retaining wall 117 are respectively a first side and a second side, the first side of the retaining wall 117 is the side of the retaining wall 117 facing the base layer 111, and the second side of the retaining wall 117 is the side of the retaining wall 117 facing the encapsulating layer 116. The first electrode 120a and the second electrode 120b are both located at a first side, as shown in fig. 8, fig. 8 is a partial sectional view of the touch display device in a further embodiment from a-a direction, or the first electrode 120a and the second electrode 120b are both located at a second side, as shown in fig. 9, fig. 9 is a partial sectional view of the touch display device in a further embodiment from a-a direction. In the thickness direction of the touch display device 100, the projection of the first electrode 120a and the projection of the second electrode 120b are located on different retaining walls 117, respectively. First, the first electrode 120a and the second electrode 120b are disposed on the same side of the dam 117, so that the disposing form of the electrode 120 can be simplified, and the sensing accuracy of the electrode 120 can be improved. Secondly, the projection of the first electrode 120a and the projection of the second electrode 120b are respectively located on different barriers 117, so that the distance between the first electrode 120a and the second electrode 120b is properly enlarged, and after a user performs a touch operation, the position change between the first electrode 120a and the second electrode 120b is larger, and further the touch operation can be sensed more accurately.
Of course, when the dam 117 has the first side and the second side, the first electrode 120a and the second electrode 120b may also be respectively located on the first side and the second side, as shown in fig. 10, and fig. 10 is a partial sectional view of the touch display device in a direction from a-a in another embodiment. That is, the first electrode 120a and the second electrode 120b are respectively located on different sides of the dam 117. The arrangement mode can also enable the distance between the first electrode 120a and the second electrode 120b to be properly enlarged, and after a user performs touch operation, the position change between the first electrode 120a and the second electrode 120b is larger, so that the touch operation can be sensed more accurately.
The first electrode 120a and the second electrode 120b may also be disposed in plural, each first electrode 120a is disposed on a different barrier 117, and each second electrode 120b is disposed on a different barrier 117, as shown in fig. 10.
In addition, when the electrodes 120 detect the deformation of the touch display device 100 through their resistance changes, the two opposite sides of the dam 117 are the first side and the second side, respectively, in the direction in which the base layer 111 points to the encapsulation layer 116, and the first electrode 120a and the second electrode 120b of the plurality of electrodes 120 may be located on the first side and the second side of the dam 117, respectively. When a touch operation occurs, the first electrode 120a and the second electrode 120b are deformed, and since the two electrodes are located on different sides of the dam 117, the change between the two electrodes is more different, so that the electrode 120 generates a larger resistance change amount. At this time, the deformation state of the touch display device can be sensed more accurately by the resistance change of the electrode 120. In addition, when the structure is adopted, the deformation of different layers at the position can be detected, and the accuracy is improved. Even if a layer falls on the neutral plane, the deformation can be detected by the electrodes on the different layers in the area.
In this embodiment, in order to facilitate the control of the touch display device, a controller (not shown in the figure) may be further provided, and the controller is configured to perform corresponding display according to the signal variation of the electrode 120. Specifically, the controller detects a resistance difference between the first electrode 120a and the second electrode 120b in a certain state, for example, the resistance difference may be in an initial non-deformation state of the electrodes, when the display panel is bent or pressed by touch, resistance values of the first electrode 120a and the second electrode 120b are both changed, and the controller detects a variation amount of the resistance difference between the first electrode 120a and the second electrode 120b after deformation, and determines the bent state or the position of the pressed by touch. The deformation of the display panel is detected through the difference between the resistance values of the first electrode 120a and the second electrode 120b, so that the problems that the resistance value of the single electrode 120 is slightly changed and is difficult to detect are solved, and the detection sensitivity and reliability are improved.
Of course, in other preferred embodiments, the projection of the electrode 120 onto the base layer 111 falls within the retaining wall setting area. But the projection of the electrode 120 onto the substrate 111 may not overlap with the projection of the dam 117 onto the substrate. For example, the electrode 120 may be disposed at the edge of the dam 117, or between two dams 117. Thus, the electrode 120 can not only be close to the stress concentration region, but also prevent the electrode 120 from breaking or cracking. Specifically, when the dam 117 is disposed on the base layer 111 or other layers, if the electrode 120 is disposed at a position having a step structure, the electrode 120 will have a climbing phenomenon, that is, a portion of the electrode 120 is bent relative to another portion, taking the dam 117 disposed on the base layer 111 as an example, a portion of the electrode 120 contacts the base layer 111, and another portion is bent and then contacts a profile surface of the dam 117 (the profile surface refers to a surface of the dam 117 that does not contact the base layer 111). The stress at the bent portion of the electrode 120 is relatively concentrated, so that the electrode 120 is prone to crack or even break at the bent portion. Therefore, by disposing the electrode 120 at the edge of the dam 117 or between two dams 117, the electrode 120 can be prevented from being bent as much as possible, thereby improving the reliability of the electrode 120.
The flexible display panel may further include an interlayer metal layer 118 in addition to the thin film transistor 112, where the thin film transistor 112 includes a source-drain metal layer 112a and a gate electrode 112b, and the interlayer metal layer 118 is closer to the encapsulation layer 116 than the source-drain metal layer 112a and the gate electrode 112 b. When the electrodes 120 are provided in plural, the electrodes 120 may include a first electrode 120a and a second electrode 120b, and the first electrode 120a is disposed in the same layer as one of the source-drain metal layer 112a, the gate electrode 112b, and the interlayer metal layer 118, as shown in fig. 11, fig. 11 is a partial sectional view of the touch display device in a direction from a-a in a further embodiment, and the first electrode 120a is disposed in the same layer as the source-drain metal layer 112 a; as shown in fig. 12, fig. 12 is a partial sectional view of the touch display device in the direction of a-a, wherein the first electrode 120a and the gate 112b are disposed on the same layer; as shown in fig. 13, fig. 13 is a partial cross-sectional view of a touch display device in a direction a-a, in which a first electrode 120a and an interlayer metal layer 118 are disposed on the same layer. With these arrangements, the first electrode 120a can be formed simultaneously when the source-drain metal layer 112a, the gate 112b, and the interlayer metal layer 118 are formed, thereby simplifying the processing of the first electrode 120 a.
As mentioned above, the thin film transistor 112 may include a source/drain metal layer 112a, a gate electrode 112b and an active layer 112c, and the thin film transistor 112 is typically disposed on an array substrate, which is a portion of the flexible display panel 110. In the embodiment shown in fig. 13, the array substrate may include a base layer 111, a buffer layer 119a, a gate insulating layer 119b, an interlayer insulating layer 119c, a passivation layer 119d, a planarization layer 119e, and a pixel defining layer 119f, wherein:
the buffer layer 119a is arranged on the base layer 111, and the source drain metal layer 112a is arranged on the buffer layer 119 a;
a gate insulating layer 119b disposed on the active layer 112c, a gate electrode 112b disposed on the gate insulating layer 119b, the gate insulating layer 119b being capable of insulating the gate electrode 112b from the active layer 112 c; the gate insulating layer 119b may include an inorganic layer made of silicon oxide, silicon nitride, or a metal oxide, and may be a single-layer structure or a multi-layer structure;
the interlayer insulating layer 119c is arranged on the gate 112b, the source-drain metal layer 112a is arranged on the interlayer insulating layer 119c, and holes can be formed in the positions, corresponding to the source-drain metal layer 112a, of the interlayer insulating layer 119c and the gate insulating layer 119b, so that the source-drain metal layer 112a is connected with the active layer 112c, and at the moment, the interlayer insulating layer 119c is located between the gate 112b and the source-drain metal layer 112a, so that insulation between the gate 112b and the source-drain metal layer 112a is achieved; it may be formed of an insulating inorganic layer such as silicon oxide or silicon nitride;
the passivation layer 119d is disposed on the source-drain metal layer 112a, and specifically, a portion of the passivation layer 119d may cover the source-drain metal layer 112a, and another portion may be in contact with the interlayer insulating layer 119 c; the passivation layer 119d may be formed of an inorganic layer such as silicon oxide or silicon nitride or an organic layer;
a planarization layer 119e is disposed on the passivation layer 119d to planarize the array substrate, the anode 113 is disposed on the planarization layer 119e, and an opening is formed in the planarization layer 119e to connect the anode 113 and the source/drain metal layer 112 a;
the pixel defining layer 119f is disposed on the planarization layer 119e, and may have an opening therein to facilitate connection of the cathode 114 with the light emitting layer 115 disposed on the anode 113.
Further, the buffer layer 119a, the gate insulating layer 119B, the interlayer insulating layer 119c, and the passivation layer 119d are not only disposed in the display region a, but also extend to the non-display region B, and at this time, the first electrode 120a may be disposed on the passivation layer 119d, and the projection of the first electrode 120a onto the base layer 111 still falls into the blocking wall disposing region.
In an alternative embodiment, the interlayer metal layer 118 may be a capacitor layer, and may also be a routing layer, and of course, may also be used for setting a capacitor and routing (e.g., changing a line between different layers).
When the plurality of electrodes 120 includes the first electrode 120a and the second electrode 120b, the flexible display panel 110 may further include a P-type silicon layer, and the first electrode 120a and the P-type silicon layer are disposed at the same layer. Due to the material characteristics of the P-type silicon layer, that is, the P-type silicon layer is easily deformed, after the first electrode 120a and the P-type silicon layer are disposed on the same layer, the deformation of the first electrode 120a is more obvious, and the sensing sensitivity of the first electrode 120a is further improved. In general, the P-type silicon layer is an active layer of a thin film transistor in a display panel.
When the plurality of electrodes 120 includes the first electrode 120a and the second electrode 120b, the second electrode 120b may be disposed in the same layer as one of the anode 113 and the cathode 114. As shown in fig. 12, the second electrode 120b is disposed in the same layer as the anode 113; as shown in fig. 13, the second electrode 120b is disposed in the same layer as the cathode 114. With these two arrangements, the second electrode 120b can be formed simultaneously when the anode 113 and the cathode 114 are formed, thereby simplifying the process of forming the second electrode 120 b.
In an alternative embodiment, as shown in fig. 14, fig. 14 is a partial sectional view of the touch display device in a direction a-a of the touch display device in yet another embodiment, the touch display device may further include a touch electrode 130, and the touch electrode 130 is formed on a surface of the encapsulation layer 116 facing away from the retaining wall 117. At this time, the second electrode 120b may be disposed at the same layer as the touch electrode 130. After the second electrode 120b and the touch electrode 130 are disposed on the same layer, because the touch electrode 130 is located at a relatively higher position, the distance between the first electrode 120a and the second electrode 120b is larger, when the first electrode 120a and the second electrode 120b are deformed, the deformation difference between the two is more obvious, and the encapsulation layer 116 is usually a multi-layer stacked structure, and the outermost inorganic layer is usually an inorganic layer, for example, the encapsulation layer 116 may include a first inorganic layer 116a, an organic layer 116b and a second inorganic layer 116 c. And the inorganic layer is harder than the organic layer, and stress concentration points are easier to generate, so that the deformation of the touch display device can be more accurately obtained.
The specific shape of the electrode 120 may be a block shape or a strip shape. In order to make the electrode 120 more easily deform and further more sensitively measure the deformation of the touch display device 100, the electrode 120 may be a strip structure, and the electrode 120 extends along the length direction of the retaining wall 117. Specifically, the length direction may be a direction in which the size of the electrode 120 is largest among directions parallel to the base layer 111, for example, when the retaining wall 117 is a ring structure surrounding the display region a, the length direction of the bent portion of the retaining wall 117 is: perpendicular to the direction of the tangent at any point of the bent portion of the retaining wall 117. Taking the structure shown in fig. 15 as an example, fig. 15 is a top view of the touch display device shown in fig. 14, in which the extending direction of the electrodes 120 is parallel to the length direction of the retaining walls 117. Of course, when other embodiments of the electrode 120 are adopted, a single electrode 120 or a plurality of electrodes 120 may be provided in a strip-shaped structure.
Generally, the bending state of the touch display device 100 can be two types:
first, as shown in fig. 1, a portion of the touch display device 100 is folded with respect to another portion, and at this time, the flexible display panel 110 has a folding axis O, and the electrode 120 is disposed at the folding axis O, so that when the touch display device 100 is folded with the folding axis O, the electrode 120 can generate a large deformation, and the sensing accuracy thereof is ensured.
Secondly, as shown in fig. 16, fig. 16 is a schematic structural diagram of a touch display device in yet another embodiment, in which the flexible display panel 110 includes a first bending state, a part of the flexible display panel is bent in the first bending state, for example, one side or both sides of the flexible display panel 110 are curved. In the first bending state, the flexible display panel 110 has a bending axis O1, and when the touch display device 100 is manufactured, the flexible display panel is bent with the bending axis O1 as a reference, so that the touch display device 100 generates the first bending state, and normally, the touch display device 100 maintains the first bending state. In this embodiment, the electrodes 120 are arranged in a direction parallel to the bending axis O1.
In the two embodiments, the distribution state of the electrodes 120 can be set according to the bending type of the touch display device 100, so as to better perform the sensing function of the electrodes 120.
The material of the electrode 120 may be selected from metal, or may be other conductive material or non-conductive material capable of detecting the bending state of the touch display device 100. Considering that the encapsulation layer 116 is an inorganic layer facing the retaining wall 117, the base layer 111 is generally made of an inorganic material, and the retaining wall 117 is generally made of an organic material, after the electrode 120 is configured as a metal electrode, the retaining wall 117 can be combined with the inorganic layer of the encapsulation layer 116 through a metal material, and can also be combined with the base layer 111 through a metal material, and the metal material can effectively relieve the interface contact performance of the inorganic material and the organic material, so that the configuration can improve the adhesion between the film layers of the touch display device, and prevent the film layers from separating.
In summary, the touch display device 100 provided in the embodiment of the invention can detect the deformation of the touch display device 100 through the plurality of electrodes 120, so that the touch display device 100 has a simpler structure and a lower cost, and the structure can be better applied to a portable and bendable flexible display. In addition, the arrangement position and structure of the electrode 120 can be optimized, so that the detection sensitivity of the electrode 120 is higher, the accuracy and reliability of the detection result are improved, and the processing technology of the touch display device 100 is simpler.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (21)
1. A touch display device is characterized by comprising a flexible display panel and a plurality of electrodes;
the flexible display panel comprises a base layer, an encapsulation layer and at least one retaining wall, wherein the base layer is provided with a plurality of retaining wall setting areas, and the retaining wall setting areas are located in a non-display area of the touch display device;
the retaining wall is packaged between the base layer and the packaging layer, and in the thickness direction of the touch display device, the projection of the retaining wall to the base layer falls into the retaining wall setting area, wherein the packaging layer is formed by laminating an inorganic layer and an organic layer, and the retaining wall is used for preventing the organic layer from flowing and further limiting the position of the organic layer;
the electrode is used for detecting the deformation of the touch display device, and in the thickness direction of the touch display device, the electrode projects the base layer to fall into the retaining wall setting area.
2. The touch display device of claim 1, further comprising:
and the controller is used for correspondingly displaying according to the signal change of the electrode.
3. The touch display device of claim 1, wherein the electrode is disposed on at least one of a side surface of the dam facing away from the dam, a side surface of the dam facing away from the encapsulation layer, and a side surface of the dam facing away from the encapsulation layer.
4. The touch display device according to claim 3, wherein in a thickness direction of the touch display device, at least a part of the projection of the electrode onto the base layer overlaps with the projection of the dam onto the base layer.
5. The touch display device of claim 3, wherein at least one of the electrodes is in contact with the dam.
6. The touch display device according to claim 3, wherein the number of the barriers is at least two, and in the thickness direction of the touch display device, the projections of the electrodes are overlapped with the projections of the at least two barriers.
7. The touch display device of claim 3, wherein the flexible display panel further comprises a P-type silicon layer, and at least one of the electrodes is disposed in the same layer as the P-type silicon layer.
8. The touch display device according to claim 4, wherein the electrodes are provided in plurality, and each of the electrodes includes a first electrode and a second electrode;
in the direction of the base layer pointing to the packaging layer, the two opposite sides of the retaining wall are respectively a first side and a second side;
the first electrode and the second electrode are both located on the first side or the second side, and in the thickness direction of the touch display device, the projection of the first electrode and the projection of the second electrode are respectively located on different retaining walls.
9. The touch display device according to claim 4, wherein the electrodes are provided in plurality, and each of the electrodes includes a first electrode and a second electrode;
in the direction of the base layer pointing to the packaging layer, the two opposite sides of the retaining wall are respectively a first side and a second side;
the first and second electrodes are located on the first and second sides, respectively.
10. The touch display device according to claim 3, wherein the electrodes are provided in plurality, and each of the electrodes includes a first electrode and a second electrode;
the flexible display panel further comprises a thin film transistor and an interlayer metal layer, wherein the thin film transistor and the interlayer metal layer are positioned on the base layer, the thin film transistor comprises a source drain metal layer and a grid, and the interlayer metal layer is closer to the packaging layer than the source drain metal layer and the grid;
the first electrode is arranged on the same layer with one of the source drain metal layer, the grid electrode and the interlayer metal layer.
11. The touch display device of claim 10, wherein the interlayer metal layer is a capacitor layer or a routing layer.
12. The touch display device according to claim 3, wherein the electrodes are provided in plurality, and each of the electrodes includes a first electrode and a second electrode;
the flexible display panel further comprises an anode and a cathode;
the second electrode is disposed in the same layer as one of the anode and the cathode.
13. The touch display device according to claim 3, wherein the electrodes are provided in plurality, and each of the electrodes includes a first electrode and a second electrode;
the touch electrode is formed on the surface, away from the retaining wall, of the packaging layer;
the second electrode and the touch electrode are arranged on the same layer.
14. The touch display device of claim 3, wherein the electrodes are bar-shaped structures and extend along a length direction of the retaining wall.
15. The touch display device of claim 3, wherein the electrodes detect deformation of the touch display device through their resistance changes.
16. The touch display device according to claim 15, wherein the electrodes are provided in plurality, and each of the electrodes includes a first electrode and a second electrode;
in the direction of the base layer pointing to the packaging layer, the two opposite sides of the retaining wall are respectively a first side and a second side;
the first and second electrodes are located on the first and second sides, respectively.
17. The touch display device according to claim 3, wherein the electrodes are provided in plurality, and each of the electrodes includes a first electrode and a second electrode;
the touch display device detects deformation of the touch display device through changes of capacitance.
18. The touch display device of claim 1, wherein the flexible display panel has a fold axis with the electrode at the fold axis.
19. The touch display device of claim 1, wherein the flexible display panel comprises a first curved state in which the electrodes are aligned along a direction parallel to a bending axis.
20. The touch display device of any one of claims 1-19, wherein the electrode is a metal electrode.
21. The touch display device according to any one of claims 1 to 19, wherein the width of the dam-disposing region is less than or equal to 200 μm, and the width is in the direction of: the width direction of the orthographic projection of the retaining wall at the position on the retaining wall setting area,
the retaining wall setting area corresponds to the retaining walls one by one.
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| CN110085133A (en) | 2018-01-26 | 2019-08-02 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display panel and display device |
| KR102405146B1 (en) * | 2018-02-08 | 2022-06-08 | 삼성디스플레이 주식회사 | Organic light-emitting display device and method of manufacturing the same |
| CN109119445B (en) * | 2018-08-27 | 2021-09-14 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof, display panel and display device |
| WO2020087298A1 (en) * | 2018-10-30 | 2020-05-07 | 深圳市柔宇科技有限公司 | Touch-control display panel and bending detection method |
| KR20200053911A (en) | 2018-11-09 | 2020-05-19 | 엘지디스플레이 주식회사 | Display device |
| CN209119103U (en) * | 2019-01-21 | 2019-07-16 | 北京京东方技术开发有限公司 | Array substrate and display device |
| CN111106156B (en) * | 2020-01-07 | 2022-01-25 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| CN111430370B (en) * | 2020-03-31 | 2023-03-21 | 厦门天马微电子有限公司 | Display panel and display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201525786A (en) * | 2013-12-17 | 2015-07-01 | Ind Tech Res Inst | Bending sensor and associated bending sensing method and system applied to flexible display panel |
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| KR101935552B1 (en) * | 2012-06-27 | 2019-04-08 | 삼성디스플레이 주식회사 | flexible display panel and the display apparatus comprising the flexible display panel |
| CN102915152A (en) * | 2012-10-24 | 2013-02-06 | 江苏畅微电子科技有限公司 | Curved surface flexible pressure-sensitive electronic whiteboard |
| US9965113B2 (en) * | 2014-04-14 | 2018-05-08 | Lg Innotek Co., Ltd. | Touch window |
| CN106406590A (en) * | 2015-07-31 | 2017-02-15 | 昆山国显光电有限公司 | Touch control display apparatus and preparation method thereof |
| CN106406627B (en) * | 2016-11-09 | 2019-03-12 | 上海天马微电子有限公司 | A kind of flexibility touch-control display panel and touch control display apparatus |
| CN106775173B (en) * | 2017-02-07 | 2019-12-20 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN106873839B (en) * | 2017-02-15 | 2019-09-13 | 上海天马微电子有限公司 | A kind of touch-control display panel and touch control display apparatus |
| CN106848107A (en) * | 2017-04-27 | 2017-06-13 | 上海天马微电子有限公司 | A kind of organic electroluminescence display panel and organic light-emitting display device |
-
2017
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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