CN112947789B - Display device - Google Patents

Display device Download PDF

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Publication number
CN112947789B
CN112947789B CN202110228843.7A CN202110228843A CN112947789B CN 112947789 B CN112947789 B CN 112947789B CN 202110228843 A CN202110228843 A CN 202110228843A CN 112947789 B CN112947789 B CN 112947789B
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layer
region
dielectric constant
display device
touch electrode
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CN202110228843.7A
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CN112947789A (en
Inventor
张欢喜
宋先保
敦栋梁
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Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention provides a display device. The display device has a first region and a second region, the second region having a light transmittance greater than that of the first region, the display device including: the display substrate comprises a light-emitting material layer and an encapsulation layer which are arranged in a stacked mode; the functional layer is positioned on one side, back to the light-emitting material layer, of the packaging layer and comprises a first touch electrode layer, a second touch electrode layer and a cover plate, the first touch electrode layer, the second touch electrode layer and the cover plate are arranged at intervals through interlayer insulating layer components, the interlayer insulating layer components and the cover plate have a first equivalent dielectric constant corresponding to the first area and a second equivalent dielectric constant corresponding to the second area, and the first equivalent dielectric constant is smaller than the second equivalent dielectric constant. According to the display device provided by the embodiment of the invention, the touch effect of the touch area can be improved, and the user experience is improved.

Description

Display device
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display device.
Background
With the rapid development of electronic devices, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the electronic devices is concerned more and more in the industry.
Conventional electronic devices such as mobile phones, tablet computers, and the like need to integrate light sensing elements such as front-facing cameras, infrared light sensors, and the like. In the prior art, by forming a groove (Notch) or an opening in the display screen, external light can enter the photosensitive element located below the screen through the groove or the opening in the screen. However, none of these electronic devices is a full screen in the true sense, and cannot display in each area of the entire screen, for example, the corresponding area of the front camera cannot display the picture. Therefore, people think that the camera is arranged below the screen, the touch control can still be normally displayed above the camera, and meanwhile, the user can take a picture. However, for the area of the camera under the screen, in order to obtain a good photographing effect, the light transmittance of the area needs to be improved, for example, an opening is added in the touch layer in the area, which may lead to a decrease in the touch performance of the area, and affect the touch experience.
Disclosure of Invention
The embodiment of the invention provides a display device, which can improve the touch effect of a camera area under a screen and improve user experience.
In one aspect, an embodiment of the present invention provides a display device having a first region and a second region, where light transmittance of the second region is greater than that of the first region, the display device including:
the display substrate comprises a light-emitting material layer and an encapsulation layer which are arranged in a stacked mode;
the functional layer is positioned on one side, back to the light-emitting material layer, of the packaging layer and comprises a first touch electrode layer, a second touch electrode layer and a cover plate, the first touch electrode layer, the second touch electrode layer and the cover plate are arranged at intervals through interlayer insulating layer assemblies, the interlayer insulating layer assemblies and the cover plate have a first equivalent dielectric constant corresponding to a first area and a second equivalent dielectric constant corresponding to a second area, and the first equivalent dielectric constant is smaller than the second equivalent dielectric constant.
According to the display device provided by the embodiment of the invention, because the effective dielectric constant of the interlayer insulating layer assembly and the cover plate corresponding to the first area is smaller than the equivalent dielectric constant of the interlayer insulating layer assembly and the cover plate corresponding to the second area, the touch capacitance of the second area, such as the area of the camera under the screen, can be improved to be consistent with the touch capacitance of the first area, so that the touch effects of all areas of the display device are consistent, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic plan view of a display device according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A schematic cross-sectional view of the display device of FIG. 1 taken along line A-A;
FIG. 3 is a schematic diagram illustrating a touch layer of the display device shown in FIG. 2;
FIG. 4 is a schematic diagram of a second insulating layer of the display device shown in FIG. 2;
FIG. 5 isbase:Sub>A schematic cross-sectional view of the display device of FIG. 1 taken along line A-A;
FIG. 6 is a schematic diagram of a third insulating layer of the display device shown in FIG. 5;
FIG. 7 is another schematic diagram of a third insulating layer of the display device shown in FIG. 5;
fig. 8 is another cross-sectional view of the display device of fig. 1 taken along linebase:Sub>A-base:Sub>A.
Detailed Description
Features of various aspects and exemplary embodiments of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element.
In order to solve the problems in the prior art, an embodiment of the invention provides a display device. The following first describes a display device provided in an embodiment of the present invention.
Fig. 1 is a schematic plan view illustrating a display device according to an embodiment of the present invention. Fig. 2 is a schematic cross-sectional structural diagram of a display device according to an embodiment of the present invention.
As shown in fig. 1 and 2, a display device 100 according to an embodiment of the present invention has a first region 101 and a second region 102. Wherein, the light transmittance of the second region 102 is greater than that of the first region 101. In the embodiment of the present invention, the first area 101 is, for example, a conventional display area or an area excluding the second area 102, the second area 102 is, for example, an area where an off-screen camera is disposed, the light transmittance of the second area 102 is set to be greater than that of the first area 101, and the front camera may be selectively disposed at a position where the front camera overlaps the second area 102, so that the front camera can obtain enough external light during operation, and meanwhile, a screen does not need to be perforated to occupy a display panel space for the front camera, thereby realizing real full-screen display. The second area 102 is provided with a structure such as an off-screen camera, so that the touch performance of the area is reduced. For example, in order to increase the light transmittance of the second region,
optionally, an opening may be formed in the touch layer of the second area 102 to reduce loss when external light passes through the touch layer, and optionally, the number of the touch electrodes in the area may also be reduced, or for the grid-shaped touch electrodes, the hollow area of the touch electrode in the second area 102 may be set to be larger than the hollow area of the touch electrode in the first area 101, which may all reduce the touch capacitance in the area. In order to improve the touch effect of the area, the embodiment of the invention changes the laminated structure of the second area 102, so that the second area 102 and the first area 101 have approximately the same touch performance, and the user experience is improved.
As shown in fig. 2, the display device 100 includes a display substrate 110 and a functional layer 120. The display substrate 110 includes a substrate 111, a circuit layer 112, a light emitting material layer 113, and an encapsulation layer 114, which are stacked. The functional layer 120 is located on the side of the encapsulation layer 114 facing away from the luminescent material layer 113. The functional layer 120 includes a first touch electrode layer 130, a second touch electrode layer 150, and a cover plate 170. The first touch electrode layer 130, the second touch electrode layer 150, and the cover plate 170 are disposed at intervals by an interlayer insulating layer assembly.
In the embodiment of the present invention, the interlayer insulating layer assembly and the cover plate 170 have a first equivalent dielectric constant corresponding to the first region 101, and the interlayer insulating layer assembly and the cover plate 170 have a second equivalent dielectric constant corresponding to the second region 102, wherein the first equivalent dielectric constant is smaller than the second equivalent dielectric constant. Therefore, when performing touch control, because the equivalent dielectric constant corresponding to the second region 102 is relatively large, the second region 102 can have a relatively large touch control capacitance and a touch control capacitance consistent with the substrate of the first region 101, so that the touch control effect is similar, the abnormality caused by different touch control electrodes between the first region 101 and the second region 102 is avoided, and the touch control sensitivity and the user experience of the second region 102 are improved.
In some embodiments of the present invention, the substrate 111 may be, for example, a flexible substrate, in other words, the display device 100 of the embodiments of the present invention is a flexible display device. The substrate 111 is made of, for example, a flexible material such as Polyimide (PI). Of course, in other embodiments, the substrate 111 may be made of other suitable flexible materials or rigid materials, which is not limited in this application.
In some embodiments of the present invention, the circuit layer 112 includes circuit structures such as pixel driving circuits of the display device 100, and generally includes an active layer, a source drain metal layer, and a drain source metal layer. The specific structure of the pixel driving circuit is not limited in this application, as long as the driving of the pixel to emit light can be achieved.
In some embodiments of the present invention, the light emitting material layer 113 is used to form various light emitting elements, such as various RGB light emitting elements. The light emitting material layer 113 may adopt a structure of a light emitting layer design commonly used in an OLED display device, and is not particularly limited herein.
In some embodiments of the present invention, the encapsulation layer 114 is used to encapsulate the circuit layer 112 and the light emitting material layer 113 formed on the substrate 111, so as to protect the circuit layer 112 and the light emitting material layer 113 from the external environment, and avoid the influence of the external environment, so as to improve the display effect and the device lifetime. Illustratively, the encapsulation layer 114 may be a three-layer stacked structure including two inorganic material layers and one organic material layer disposed between the two inorganic material layers. Illustratively, the encapsulation layer 114 is a flexible encapsulation layer, which may be fabricated using, for example, thin Film Encapsulation (TFE) techniques.
In some embodiments of the present invention, the first touch electrode layer 130, the second touch electrode layer 150, and the first insulating layer 140 constitute a touch layer. The first touch electrode layer 130 and the second touch electrode layer 150 are disposed at an interval through the first insulating layer 140. A plurality of touch electrodes are formed in the first touch electrode layer 130 and the second touch electrode layer 150. Touch detection is performed through the touch electrode, so that the touch position is determined. The first touch electrode layer 130 and the second touch electrode layer 150 can be made of touch electrode materials commonly used in the art, such as indium tin oxide or metal. Optionally, the touch electrode may be directly formed on the encapsulation layer 114 by using the encapsulation layer 114 as a substrate, so that the thickness of the display device may be significantly reduced, and the flexibility of the display device may be improved.
In some embodiments of the present invention, the cover plate 170 is used to protect the underlying structures such as the display substrate and the touch layer. The cover plate 170 may be made of cover glass or the like. The cover plate 170 is attached to the lower structural layer through the second insulating layer 160. The second insulating layer 160 may be made of, for example, an Optically Clear Adhesive (OCA) or a uv OCA.
As shown in fig. 2, in some embodiments of the present invention, the interlayer insulating layer assembly includes a first insulating layer 140 between the first touch electrode layer 130 and the second touch electrode layer 150, and a second insulating layer 160 between the second touch electrode layer 150 and the cover plate 170. That is, the first touch electrode layer 130 and the second touch electrode layer 150 are spaced apart by the first insulating layer 140, and the second touch electrode layer 150 and the cover plate 170 are spaced apart by the second insulating layer 160. It should be noted that the first touch electrode layer 130 and the second touch electrode layer 150 may respectively include touch electrodes, and one of the first touch electrode layer 130 and the second touch electrode layer 150 may include a touch electrode, and the other includes a bridge structure connecting the same touch electrodes.
In some embodiments of the present invention, in order to improve the touch performance of the second region 102, a dielectric constant of a portion of at least one of the first insulating layer 140 and the second insulating layer 160 corresponding to the first region 101 is smaller than a dielectric constant of a portion corresponding to the second region 102, so that a first equivalent dielectric constant of the interlayer insulating layer assembly and the cover plate 170 corresponding to the first region 101 is smaller than a second equivalent dielectric constant of the second region 102. Specific arrangements of the first insulating layer 140 and the second insulating layer 160 will be described below with reference to the drawings.
Fig. 3 is a schematic structural diagram of a touch layer of the display device shown in fig. 2. As shown in fig. 3, in some embodiments of the present invention, the first insulating layer 140 includes a first insulating portion 141 located in the first region 101, and a second insulating portion 142 located in the second region 102, and a dielectric constant of the first insulating portion 141 is smaller than a dielectric constant of the second insulating portion 142. Thus, since the dielectric constant of the first insulating portion 141 is smaller than that of the second insulating portion 142, the equivalent dielectric constant of the first region 101 is smaller than that of the second region 102. Thus, when the display device 100 is touched, the equivalent dielectric constant of the second region 102 is increased, so that the touch capacitance of the second region 102 can reach a level substantially the same as the touch capacitance of the first region 101, the touch performance of the second region 102 is improved, the touch performance of the display panel is balanced, and the user experience is improved.
Illustratively, in some embodiments of the present invention, the first insulating portion 141 includes a silicon oxide layer, and the second insulating portion 142 includes a silicon nitride layer or a silicon oxynitride layer. Since the dielectric constant of the silicon nitride layer or the silicon oxynitride layer is greater than that of the silicon oxide layer, the dielectric constant of the first insulating portion 141 is smaller than that of the second insulating portion 142.
Fig. 4 is a schematic structural diagram of a second insulating layer of the display device shown in fig. 2. As shown in fig. 4, in some embodiments of the present invention, the second insulating layer 160 includes a first insulating portion 161 located in the first region 101, and a second insulating portion 162 located in the second region 102, the first insulating portion 161 having a dielectric constant smaller than that of the second insulating portion 162. Thus, since the dielectric constant of the first insulating portion 161 is smaller than that of the second insulating portion 162, the equivalent dielectric constant of the first region 101 is smaller than that of the second region 102. Thus, when the display device 100 is touched, the equivalent dielectric constant of the second region 102 is increased, so that the touch capacitance of the second region 102 can reach approximately the same degree as the touch capacitance of the first region 101, the touch performance of the second region 102 is improved, and the user experience is improved.
For example, in some embodiments of the present invention, the first insulating portion 161 and the second insulating portion may be made of different OCA materials, and the dielectric constant of the OCA material used for the first insulating portion 161 is smaller than that of the OCA material used for the second insulating portion 162, so as to improve the touch performance of the second region 102.
Fig. 5 is another sectional structure view of the display device of fig. 1 taken along linebase:Sub>A-base:Sub>A.
As shown in fig. 5, in some embodiments of the present invention, the functional layer 120 of the display device 100 further includes a polarizer 180 and a third insulating layer 190. The polarizer 180 is located between the second touch electrode layer 150 and the cover plate 170 or the second insulating layer 160. The third insulating layer 190 is located between the polarizer 180 and the second touch electrode layer 150. The polarizer 180 is used to improve the contrast of the display panel in a bright environment. Illustratively, the polarizer 180 may be made of, for example, a composite of, for example, a PVA film, a TAC film, a protective film, a release film, a pressure sensitive adhesive, and the like. The third insulating layer 190 is a glue layer, which can be made of various glue layer materials (e.g., OC material). The third insulating layer 190 is used for attaching the polarizer 180 to the touch layer.
In some embodiments of the present invention, in order to increase the equivalent dielectric constant of the second region 102, the dielectric constant of the portion of the third insulating layer 190 located in the second region 102 may be increased.
Alternatively, fig. 6 is a schematic structural diagram of a third insulating layer of the display device shown in fig. 5. As shown in fig. 6, in some embodiments of the present invention, the third insulating layer 190 includes a first insulating portion 191 located in the first region 101, and a second insulating portion 192 located in the second region 102. The dielectric constant of the first insulating portion 191 is smaller than that of the second insulating portion 192. Thus, since the dielectric constant of the first insulating portion 191 is smaller than that of the second insulating portion 192, the equivalent dielectric constant of the first region 101 is smaller than that of the second region 102. Thus, when the display device 100 is touched, the equivalent dielectric constant of the second region 102 is increased, so that the touch capacitance of the second region 102 can reach approximately the same degree as the touch capacitance of the first region 101, the touch performance of the second region 102 is improved, and the user experience is improved.
Illustratively, in some embodiments of the present invention, the first insulating portion 191 and the second insulating portion are made of different OC materials, and the dielectric constant of the OC material used for the first insulating portion 191 is smaller than that of the OC material used for the second insulating portion 192.
Fig. 7 is another structural diagram of the third insulating layer of the display device shown in fig. 5. As shown in fig. 7, in some embodiments of the present invention, the third insulating layer 190 includes a first adhesive layer 193 positioned at the first region 101, a second adhesive layer 194 positioned at the second region 102, and a fourth insulating layer 195.
In some embodiments of the present invention, the first adhesion layer 193 and the second adhesion layer 194 have the same dielectric constant, and the dielectric constant of the second adhesion layer 194 is less than that of the fourth insulation layer 195. In this way, the fourth insulating layer 195 having a larger dielectric constant is provided in the second region 102, so that the equivalent dielectric constant of the first region 101 is smaller than that of the second region 102. When the display device 100 is touched, since the equivalent dielectric constant of the second region 102 is increased, the touch capacitance of the second region 102 can reach approximately the same degree as the touch capacitance of the first region 101, so that the touch performance of the second region 102 is improved, and the user experience is improved.
In some embodiments of the present invention, the first adhesion layer 193 and the second adhesion layer 194 may be formed of a conventional glue layer (OC material). The fourth insulating layer 195 may be made of a commonly used insulating material. Illustratively, the fourth insulating layer 195 is made of silicon oxide, silicon nitride, silicon oxynitride, or the like, for example. Since the OC material has a dielectric constant of 3.5, which is smaller than that of silicon oxide, silicon nitride or silicon oxynitride, the dielectric constant of the first adhesion layer 193 is smaller than that of the fourth insulation layer 195, so that the equivalent dielectric constant of the first region 101 is smaller than that of the second region 102.
It should be understood that in some embodiments of the present invention, the first adhesion layer 193 and the second adhesion layer 194 may be made of different materials, in which case the dielectric constants of the first adhesion layer 193 and the second adhesion layer 194 are different, but it is sufficient to ensure that the equivalent dielectric constants of the second adhesion layer 194 and the fourth insulation layer 165 are greater than the equivalent dielectric constant of the first adhesion layer 193.
Fig. 8 is another cross-sectional view of the display device of fig. 1 taken along linebase:Sub>A-base:Sub>A. As shown in fig. 8, in some embodiments of the present invention, the second insulating layer 160 is formed with a groove 163 in the second region 102, and the cover plate 170 is formed with a protrusion 171 in the second region 102 matching the groove 163. In other words, the thickness of the portion of the cover plate 170 in the second region 102 is greater than the thickness of the portion in the first region 101. In this way, since the dielectric constant of the cover plate 170 (e.g., the dielectric constant of glass is 5.5) is greater than the dielectric constant of the second insulating layer 160 (the dielectric constant of OCA is much less than 5.5), the equivalent dielectric constant of the first region 101 is less than the equivalent dielectric constant of the second region 102. When the display device 100 is touched, since the equivalent dielectric constant of the second region 102 is increased, the touch capacitance of the second region 102 can reach approximately the same degree as the touch capacitance of the first region 101, so that the touch performance of the second region 102 is improved, and the user experience is improved.
It should be understood that the above is merely an example to describe how to make the effective dielectric constant of the interlayer insulating layer assembly and the cover plate corresponding to the first region smaller than the equivalent dielectric constant of the corresponding second region, but the embodiments of the present invention are not limited thereto, and may also be implemented in other similar ways according to the concept of the present invention.
According to the display device provided by the embodiment of the invention, because the effective dielectric constant of the interlayer insulating layer assembly and the cover plate corresponding to the first area is smaller than the equivalent dielectric constant of the interlayer insulating layer assembly and the cover plate corresponding to the second area, the touch capacitance of the second area, such as a camera area under a screen, can be improved to be consistent with the touch capacitance of the first area, so that the touch effects of all areas of the display device are consistent, and the user experience is improved.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.

Claims (10)

1. A display device having a first region and a second region, the second region having a light transmittance greater than that of the first region, the display device comprising:
the display substrate comprises a light-emitting material layer and an encapsulation layer which are arranged in a stacked mode;
the functional layer is positioned on one side, opposite to the light-emitting material layer, of the packaging layer and comprises a first touch electrode layer, a second touch electrode layer and a cover plate, the first touch electrode layer, the second touch electrode layer and the cover plate are arranged at intervals through interlayer insulating layer components, the interlayer insulating layer components and the cover plate have a first equivalent dielectric constant corresponding to the first area and a second equivalent dielectric constant corresponding to the second area, and the first equivalent dielectric constant is smaller than the second equivalent dielectric constant;
the interlayer insulating layer assembly comprises a first insulating layer positioned between the first touch electrode layer and the second touch electrode layer and a second insulating layer positioned between the second touch electrode layer and the cover plate, and the dielectric constant of a part, corresponding to the first area, in at least one of the first insulating layer and the second insulating layer is smaller than the dielectric constant of a part, corresponding to the second area, in the first insulating layer and the second insulating layer;
one of the first touch electrode layer and the second touch electrode layer comprises a touch electrode, and the other touch electrode layer comprises a bridge structure connected with the same touch electrode.
2. The display device according to claim 1, wherein the first insulating layer comprises a first insulating portion in the first region and a second insulating portion in the second region, and wherein a dielectric constant of the first insulating portion is smaller than a dielectric constant of the second insulating portion.
3. The display device according to claim 2, wherein the first insulating portion comprises a silicon oxide layer, and wherein the second insulating portion comprises a silicon nitride layer or a silicon oxynitride layer.
4. The display device according to claim 1, wherein the second insulating layer comprises a first insulating portion in the first region and a second insulating portion in the second region, and wherein a dielectric constant of the first insulating portion is smaller than a dielectric constant of the second insulating portion.
5. The display device according to claim 1, wherein the functional layer further comprises a polarizer between the second touch electrode layer and the cover plate, and a third insulating layer between the polarizer and the second touch electrode layer.
6. The display device according to claim 5, wherein the third insulating layer comprises a first insulating portion in the first region and a second insulating portion in the second region, and wherein a dielectric constant of the first insulating portion is smaller than a dielectric constant of the second insulating portion.
7. The display device according to claim 5, wherein the third insulating layer comprises a first adhesive layer in the first region, and a fourth insulating layer and a second adhesive layer in the second region.
8. The display device according to claim 7, wherein the first adhesive layer and the second adhesive layer have the same dielectric constant, and wherein the dielectric constant of the second adhesive layer is smaller than that of the fourth insulating layer.
9. The display device according to claim 1, wherein the second insulating layer is formed with a groove in the second region, and wherein the cover plate is formed with a protrusion matching the groove in the second region.
10. The display device according to any one of claims 1 to 9, wherein the second region is a region of the display device for forming an off-screen camera module, and the first region is a region of the display device other than the second region.
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CN110119220A (en) * 2018-02-07 2019-08-13 上海和辉光电有限公司 A kind of touch-control display panel and display device
CN111367430A (en) * 2020-02-25 2020-07-03 合肥维信诺科技有限公司 Touch display panel and touch display device

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