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CN110262702B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN110262702B
CN110262702B CN201910696860.6A CN201910696860A CN110262702B CN 110262702 B CN110262702 B CN 110262702B CN 201910696860 A CN201910696860 A CN 201910696860A CN 110262702 B CN110262702 B CN 110262702B
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China
Prior art keywords
thinning groove
substrate
display area
display panel
driving board
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CN201910696860.6A
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Chinese (zh)
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CN110262702A (en
Inventor
邓贤柱
张萌
孙增标
王明玺
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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Priority to CN201910696860.6A priority Critical patent/CN110262702B/en
Publication of CN110262702A publication Critical patent/CN110262702A/en
Priority to PCT/CN2020/079259 priority patent/WO2021017478A1/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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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)
  • Liquid Crystal (AREA)

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel includes: the light-emitting device comprises a first substrate, a light-emitting functional layer, a second substrate, an optical adhesive layer and a polaroid which are sequentially stacked; the display panel comprises a display area and a non-display area positioned on at least one side of the display area; the surface of the part, located in the non-display area, of the second substrate, which is far away from the light-emitting functional layer is provided with a thinning groove, and the thinning groove extends to the side edge, far away from the display area, of the non-display area along the direction in which the display area points to the non-display area; the touch control driving board is arranged in the thinning groove; the optical adhesive layer extends from the display area to the thinning groove and covers a part of the touch control driving board. The embodiment of the invention reduces the frame of the display panel and improves the screen occupation ratio.

Description

Display panel and display device
Technical Field
The present invention relates to a narrow frame technology, and in particular, to a display panel and a display device.
Background
With the progress of display technology, the realization of 'real full-screen' becomes the goal that various display panel manufacturers strive to realize.
However, the display panel in the prior art still has a larger bezel, and the screen occupation ratio is still smaller.
Disclosure of Invention
The invention provides a display panel and a display device, which are used for reducing the frame of the display panel and improving the screen occupation ratio of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including:
the light-emitting device comprises a first substrate, a light-emitting functional layer, a second substrate, an optical adhesive layer and a polaroid which are sequentially stacked;
the display panel comprises a display area and a non-display area positioned on at least one side of the display area; the surface of the part, located in the non-display area, of the second substrate, which is far away from the light-emitting functional layer is provided with a thinning groove, and the thinning groove extends to the side edge, far away from the display area, of the non-display area along the direction in which the display area points to the non-display area; the touch control driving board is arranged in the thinning groove;
the optical adhesive layer extends from the display area to the thinning groove and covers a part of the touch control driving board.
Optionally, a binding pin is arranged in the thinning groove, and the touch control driving board is electrically connected with the binding pin; in a direction perpendicular to the second substrate, a maximum depth of the thinning groove is less than or equal to a total thickness of the touch control driving board and the binding pins.
Optionally, the thinning grooves include a first thinning groove and a second thinning groove which are communicated with each other, and the first thinning groove is arranged on one side of the second thinning groove adjacent to the display area;
the depth of the first thinning groove is smaller than that of the second thinning groove along the direction perpendicular to the second substrate, and the binding pins are arranged in the second thinning groove.
Optionally, in a direction perpendicular to the second substrate, a depth difference between the first thinning groove and the second thinning groove is greater than or equal to a thickness of the bonding pin.
Optionally, the width of the first thinning groove is greater than or equal to 50 micrometers and less than or equal to 100 micrometers in a direction in which the first thinning groove is directed to the second thinning groove and perpendicular to a boundary where the first thinning groove and the second thinning groove intersect.
Optionally, a vertical projection of the polarizer on the second substrate is partially overlapped with a vertical projection of the touch driving board on the second substrate.
Optionally, the thinning groove penetrates the non-display area in a direction parallel to an edge of the thinning groove adjacent to the display area.
Optionally, the optical adhesive layer is made of a thermal curing adhesive.
Optionally, the second substrate includes a touch electrode layer, and the touch electrode layer is electrically connected to the bonding pins;
the second substrate further comprises a packaging glass or a thin film packaging layer;
the touch electrode layer is arranged on the surface of the packaging glass far away from the first substrate, or the touch electrode layer is arranged on the surface of the thin film packaging layer far away from the first substrate, or the touch electrode layer is arranged in the thin film packaging layer.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel according to any embodiment of the present invention.
In the embodiment of the invention, the touch control driving board is covered by the optical adhesive layer, namely the distance between the surface of the optical adhesive layer far away from the second substrate and the second substrate is greater than the distance between the surface of the touch control driving board far away from the second substrate and the second substrate, because the polaroid is attached to the optical adhesive layer, the attachment surface of the polaroid is higher than the surface of the touch control driving board far away from the second substrate, when the polaroid is attached to the surface of the optical adhesive layer, the edge of the polaroid does not collide with the touch control driving board, and the like, namely, a preset distance is not required to be reserved between the touch control driving board and the polaroid to avoid mutual interference between a touch control driving board binding process and a polaroid attaching process, namely, the distance between the polaroid and the touch control driving board can be smaller than the preset distance along a direction parallel to the second substrate, or the vertical projection of the second substrate can be overlapped with the vertical projection part of the touch control driving board on the second substrate, therefore, the frame of the display panel is reduced, and the screen occupation ratio is improved. The surface of the part, located in the non-display area, of the second substrate, far away from the light-emitting function layer is provided with the thinning groove, the thinning groove extends to the side edge, far away from the display area, of the non-display area along the direction of the display area pointing to the non-display area, and the touch control driving board is arranged in the thinning groove; because the thinning groove has certain degree of depth thickness for the upper surface that the second base plate was kept away from to the touch-control drive board reduces with the difference in height of second base plate, when the optical adhesive layer covered the touch-control drive board, the difference in height that climbs reduces, can avoid having the bubble because of the too big difference in height that causes the optical adhesive layer to climb or because laminating counterpoint precision problem leads to having the space between the side of optical adhesive layer and touch-control drive board, avoid steam or oxygen etc. to invade display panel internal influence display panel's encapsulation reliability through this bubble or gap, thereby prolong display panel's life.
Drawings
FIG. 1 is a schematic diagram of a display panel according to the prior art;
fig. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of another display panel according to an embodiment of the present invention;
fig. 5 is a schematic top view of a display panel according to an embodiment of the invention;
FIG. 6 is a schematic top view of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of another display panel provided in accordance with an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As mentioned in the background art, the inventor has found that the reason for generating the technical problem is that, in the current display panel, especially for the display panel with a touch function, an area required for binding the touch driving board needs to be reserved on the display panel, the area occupies a large space, and other components (such as a polarizer and the like) need to perform avoidance processing on the touch driving board, so that the display panel has a large frame. Fig. 1 is a schematic structural diagram of a display panel in the prior art, and as shown in fig. 1, the display panel includes a first substrate 101, a light-emitting functional layer 102, a second substrate 103, and a polarizer 105, and a touch pad 204 is disposed on the second substrate 103 and used for being bonded with a touch driving board 106; since the polarizer 105 is located between the boundary of the non-display region and the boundary of the light-emitting functional layer 102 (display region of the display panel), a certain gap a1 is required to ensure that light leakage from the polarizer 105 is not visible in the display region; a certain preset distance a2 is required between the polarizer 105 and the touch driving board 106 to avoid mutual interference between the bonding process of the touch driving board 106 and the laminating process of the polarizer 105; the touch pad 204 needs to have a certain width a3 to ensure the stability of the electrical connection between the touch driving board 106 and the touch pad 204; the touch pad 204 needs to be away from the edge of the second substrate 103 by a certain distance a4 to ensure that the touch pad 204 is not affected when the second substrate 103 is cut, so the width of the frame of the display panel in the prior art is at least a1+ a2+ a3+ a4, which results in a wider frame.
Based on the technical problem, the invention provides the following solution:
fig. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention, and referring to fig. 2, the embodiment provides a display panel including:
the light-emitting device comprises a first substrate 101, a light-emitting functional layer 102, a second substrate 103, an optical adhesive layer 104 and a polaroid 105 which are sequentially stacked;
the display panel includes a display area 11 and a non-display area 12 located at least one side of the display area 11; the surface of the second substrate 103, which is located in the non-display area 12 and is far away from the light-emitting functional layer 102, is provided with a thinning groove 20, and along the direction in which the display area 11 points to the non-display area 12, the thinning groove 20 extends to the side edge of the second substrate 103, which is located in the non-display area 12 and is far away from the display area 11; the touch control driving board 106 is arranged in the thinning groove 20;
the optical adhesive layer 104 extends from the display area 11 to the thinning groove 20 and covers a part of the touch driving board 106.
The first substrate 101 may be an array substrate for driving the light-emitting function layer 102 to emit light, and includes a driving circuit layer and the like. The light emitting function layer 102 may include an anode, a cathode, and an organic light emitting layer disposed between the anode and the cathode, and the like. The second substrate 103 may be a package substrate or the like. When the display panel employs the mutual capacitance type touch electrode, the touch driving board 106 is configured to provide a touch driving signal to the touch electrode and receive a touch sensing signal returned by the touch electrode. When the display panel uses the self-contained touch electrode, the touch driving board 106 is configured to receive a touch sensing signal returned by the touch electrode.
Specifically, the optical adhesive layer 104 covers the touch driving board 106, that is, the distance between the surface of the optical adhesive layer 104 far from the first substrate 101 and the first substrate 101 is greater than the distance between the surface of the touch driving board 106 far from the first substrate 101 and the first substrate 101, because the polarizer 105 is attached to the optical adhesive layer 104, the attachment surface of the polarizer 105 is higher than the surface of the touch driving board 106 far from the first substrate 101, when the polarizer 105 is attached to the surface of the optical adhesive layer 104, the edge of the polarizer 105 does not collide with the touch driving board 106, that is, a preset distance does not need to be reserved between the touch driving board 106 and the polarizer 105 to avoid mutual interference between the touch driving board 106 bonding process and the polarizer 105 attaching process, that is, the distance between the polarizer 105 and the touch driving board 106 may be smaller than the preset distance along a direction parallel to the second substrate 103, or the vertical projection of the polarizer 105 on the second substrate 103 may be perpendicular to the touch driving board 103 and the vertical projection of the touch driving board 105 on the second substrate 103 And the display panel is partially overlapped, so that the frame of the display panel is reduced, and the screen occupation ratio is improved. The preset distance is determined according to the fitting alignment precision of the polarizer 105 and the touch driving board 106 in the prior art, and an exemplary preset distance may be 0.2 mm.
In addition, by arranging the optical adhesive layer 104 to cover part of the touch control driving board 106, on the premise that the display panel has a smaller frame, the laminating range of the polarizer 105 on the optical adhesive layer 104 is larger, and the laminating alignment difficulty is reduced, so that the laminating process difficulty is reduced, and the yield of the display panel is improved; and the optical adhesive layer 104 can protect and fix the touch driving board 106, so that the firmness of connection between the touch driving board 106 and the display panel can be increased, the touch driving board 106 can be prevented from falling off or warping when the display panel is subjected to external force, and the stability of the display panel is improved.
In addition, by providing the thinning groove 20 on the surface of the portion of the second substrate 103 located in the non-display area 12 and away from the light-emitting functional layer 102, along the direction in which the display area 11 points to the non-display area 12, the thinning groove 20 extends to the side of the non-display area 12 away from the display area 11, and the touch driving board 106 is disposed in the thinning groove 20; because the thinning groove 20 has a certain depth and thickness, the height difference between the upper surface of the touch drive board 106 far away from the first substrate 101 and the upper surface of the second substrate 103 far away from the first substrate 101 is reduced, when the optical adhesive layer 104 covers the touch drive board 106, the climbing height difference is reduced, and the situation that bonding bubbles exist between the side edges of the optical adhesive layer 104 and the touch drive board 106 due to the fact that the climbing height difference of the optical adhesive layer 104 is too large or gaps exist between the side edges of the optical adhesive layer 104 and the touch drive board 106 due to the fact that the bonding alignment precision problem exists can be avoided, the situation that water vapor or oxygen and the like invade the inside of the display panel through the bubbles or the gaps to influence the packaging reliability of the display panel is avoided, and the service life of the display panel is prolonged.
Fig. 3 is a schematic cross-sectional view of another display panel according to an embodiment of the invention, and optionally, referring to fig. 3, a bonding pin 202 is disposed in the thinning groove 20, and the touch driving board 106 is electrically connected to the bonding pin 202; the maximum depth H of the thinning groove 20 in the direction perpendicular to the second substrate 103 is less than or equal to the total thickness D of the touch driving board 106 and the bonding pins 202.
Specifically, when the maximum depth H of the thinning groove 20 is too large, the upper surface of the touch driving board 106 away from the first substrate 101 may be lower than the upper surface of the second substrate 103 away from the light-emitting function layer 102, which may cause over-etching, and increase the process difficulty and cost. By setting the maximum depth H of the thinning groove 20 to be less than or equal to the total thickness D of the touch driving board 106 and the binding pins 202, the height difference between the upper surface of the touch driving board 106 and the upper surface of the second substrate 103 is ensured to be reduced, and the process difficulty and cost are reduced.
In addition, referring to fig. 3, when the touch driving board 106 is bonded to the bonding pins 202, a certain staggered bonding may be performed, that is, the touch driving board 106 does not completely cover the bonding pins 202, so that one side of the side wall of the bonding pin 202, which is adjacent to the thinning groove 20, is exposed to a partial area, on one hand, conductive adhesive for bonding may be prevented from overflowing to the upper surface of the touch driving board 106 to affect other structures, on the other hand, a larger gap may be formed between the side edge of the touch driving board 106 and the side wall of the thinning groove 20, and it may be prevented that the optical adhesive layer 104 with too small gap may not completely fill the gap.
Fig. 4 is a schematic cross-sectional view of another display panel provided by an embodiment of the present invention, and alternatively, referring to fig. 4, the thinning groove includes a first thinning groove 21 and a second thinning groove 22 which are communicated with each other, and the first thinning groove 21 is disposed on a side of the second thinning groove 22 adjacent to the display region 11;
the depth of the first thinning groove 21 is smaller than the depth of the second thinning groove 22 in a direction perpendicular to the second substrate 103, and the bonding pin 202 is disposed in the second thinning groove 22. Note that the depth of the first thinning groove refers to a perpendicular distance between the bottom surface of the first thinning groove 21 and the upper surface of the second substrate 103 away from the first substrate 101, and the depth of the second thinning groove refers to a perpendicular distance between the bottom surface of the second thinning groove 22 and the upper surface of the second substrate 103 away from the first substrate 101.
Specifically, after the optical adhesive layer 104 is attached, the optical adhesive layer 104 fills the depth of the first thinning groove 21, fills the area between the first thinning groove 21 and the touch control driving board 106, and finally climbs the height difference between the upper surface of the touch control driving board 106 and the upper surface of the second substrate 103, because the first thinning groove 21 and the binding pins 202 are lower than the upper surface of the second substrate 103, the optical adhesive layer 104 can better fill the area, and meanwhile, the height difference between the upper surface of the touch control driving board 106 and the upper surface of the second substrate 103 is reduced by the first thinning groove 21 and the second thinning groove 22, so that the optical adhesive layer 104 can be better contacted with the side surface of the touch control driving board 106, and attachment bubbles or gaps are avoided. In addition, the first thinning groove 21 further ensures that a larger gap is formed between the touch driving board 106 and the sidewall of the thinning groove adjacent to the display area 11, so that the gap is prevented from being filled incompletely by the optical adhesive layer 40 with too small a gap. Meanwhile, the first thinning groove 21 can contain conductive adhesive overflowing during binding of the touch control driving board 106, so that the touch control driving board 106 can be bound in a staggered mode or not bound in a staggered mode, the requirement for binding precision of the touch control driving board 106 is lowered, and the process difficulty is lowered.
Alternatively, referring to fig. 4, the difference in depth between the first thinning groove 21 and the second thinning groove 22 is greater than or equal to the thickness of the bonding pin 202 in the direction perpendicular to the second substrate 103.
The arrangement is that the upper surface of the binding pin 202 adjacent to the touch control driving board 106 is lower than the bottom surface of the first thinning groove 21, so that the filling depth of the optical adhesive layer 104 is sequentially increased along the direction in which the first thinning groove 21 points to the second thinning groove 22, the optical adhesive layer 104 is ensured to fill the depth well, the optical adhesive layer is in contact with the bottom surface of the first thinning groove 21 and the upper surfaces of the binding pin 202 and the side surface of the touch control driving board 106 well, and bubbles or gaps between the optical adhesive layer 104 and the surfaces are further avoided.
Optionally, fig. 5 is a schematic top view of a display panel according to an embodiment of the present invention, and referring to fig. 5, a width S of the first thinning groove 21 is greater than or equal to 50 micrometers and less than or equal to 100 micrometers in a direction X along a boundary where the first thinning groove 21 points to the second thinning groove 22 and is perpendicular to the first thinning groove 21 and the second thinning groove 22.
By means of the arrangement, a large gap is formed between the touch control driving board 106 and the side wall of the thinning groove 20 adjacent to the display area 11, the phenomenon that the gap is too small and cannot be completely filled with the optical adhesive layer 40 is avoided, and meanwhile the phenomenon that the gap between the touch control driving board 106 and the side wall of the thinning groove 20 adjacent to the display area 11 is too large, the optical adhesive layer 104 cannot well span the gap, and therefore the touch control driving board 106 cannot be completely contacted to generate attaching bubbles or gaps.
Alternatively, fig. 6 is a schematic top view of another display panel provided in an embodiment of the present invention, and referring to fig. 6, the thinning groove 20 penetrates the non-display area 12 along a direction Y parallel to the edge 23 of the thinning groove 20 adjacent to the display area.
I.e. the size of the thinning groove 20 in a direction Y parallel to the edge 23 of the thinning groove 20 adjacent to the display area 11 is equal to the size of the non-display area. With the arrangement, when the touch control driving board is bound to the second substrate 103, along the direction Y parallel to the edge 23 of the thinning groove 20 adjacent to the display area 11, the requirement on the alignment precision of the touch control driving board is low, the requirement on the etching process precision of the thinning groove 20 is also low, and the process difficulty is reduced.
Alternatively, with continued reference to fig. 4, the orthogonal projection of the polarizer 105 on the second substrate 103 overlaps with the orthogonal projection of the touch driving board 106 on the second substrate 103.
With the arrangement, there is no gap between the polarizer 105 and the touch driving board 106 in the direction parallel to the second substrate 103, and the sum of the width of the polarizer 105 in the non-display area 12 and the binding length between the touch driving board 106 and the second substrate 103 is further reduced, so that the frame of the display panel is further reduced, and the screen occupation ratio is improved.
Optionally, the optical adhesive layer 104 is made of a thermal curing adhesive.
Specifically, because the optical adhesive layer 104 is used for bonding the polarizer 105, a general bonding process is to place the polarizer 105 on the uncured optical adhesive layer 104 and then cure the optical adhesive layer 104, because the polarizer 105 can change the polarization characteristic of light, if an ultraviolet curing mode is adopted, the ultraviolet light may not completely cure the optical adhesive layer 104 due to the action of the polarizer 105, which affects the bonding effect. By arranging the optical adhesive layer 104 and adopting thermosetting adhesive, better curing of the optical adhesive layer 104 can be ensured, and the bonding stability of the polarizer 105 is ensured.
Fig. 7 is a schematic cross-sectional view of another display panel provided in an embodiment of the invention, and referring to fig. 4 and 7, optionally, the second substrate 103 includes a touch electrode layer 203, and the touch electrode layer 203 is electrically connected to the bonding pins 202; the second substrate 103 further comprises an encapsulation glass or thin film encapsulation layer;
the touch electrode layer 203 is disposed on the surface of the package glass away from the first substrate 101 (fig. 4), or the touch electrode layer 203 is disposed on the surface of the thin film package layer away from the first substrate 101, or the touch electrode layer 203 is disposed in the thin film package layer (fig. 7).
Referring to fig. 4, the second substrate 103 is a package substrate, when the display panel is packaged by glass, the second substrate 103 includes package glass, and the touch electrode layer 203 can be formed on a surface of the package glass and electrically connected to the touch driving board 106 through the bonding pins 202. Referring to fig. 7, when the display panel is packaged by a thin film, the second substrate 103 includes a thin film packaging layer, and the touch electrode layer 203 may be formed on a surface of the thin film packaging layer or inside the thin film packaging layer. By directly disposing the touch electrode layer 203 on the surface or inside of the second substrate 103, the display panel has a smaller thickness, which is in line with the development trend of light and thin display panels.
Fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention, and referring to fig. 8, a display device 20 includes a display panel 19 according to any embodiment of the present invention, and the display device according to any embodiment of the present invention may be a display device with a display function, such as a mobile phone, a computer, and an intelligent wearable device, which is not limited in the embodiment of the present invention.
The display device provided by the embodiment comprises the display panel provided by any embodiment of the invention, has the same functions and effects, and is not described again here.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A display panel, comprising:
the light-emitting device comprises a first substrate, a light-emitting functional layer, a second substrate, an optical adhesive layer and a polaroid which are sequentially stacked;
the display panel comprises a display area and a non-display area positioned on at least one side of the display area; the surface of the part, located in the non-display area, of the second substrate, which is far away from the light-emitting functional layer is provided with a thinning groove, and the thinning groove extends to the side edge, far away from the display area, of the non-display area along the direction in which the display area points to the non-display area; the touch control driving board is arranged in the thinning groove;
the optical adhesive layer extends to the thinning groove from the display area and covers part of the touch control driving board;
binding pins are arranged in the thinning groove, and the touch control driving board is electrically connected with the binding pins; the touch control driving board does not completely cover the binding pins, and one side of each binding pin, which is adjacent to the side wall of the thinning groove, is exposed to a partial area.
2. The display panel according to claim 1, characterized in that:
in a direction perpendicular to the second substrate, a maximum depth of the thinning groove is less than or equal to a total thickness of the touch control driving board and the binding pins.
3. The display panel according to claim 2, characterized in that:
the thinning grooves comprise a first thinning groove and a second thinning groove which are communicated with each other, and the first thinning groove is arranged on one side, adjacent to the display area, of the second thinning groove;
the depth of the first thinning groove is smaller than that of the second thinning groove along the direction perpendicular to the second substrate, and the binding pins are arranged in the second thinning groove.
4. The display panel according to claim 3, wherein:
the depth difference between the first thinning groove and the second thinning groove is larger than or equal to the thickness of the binding pin along the direction perpendicular to the second substrate.
5. The display panel according to claim 3, wherein:
the width of the first thinning groove is greater than or equal to 50 micrometers and less than or equal to 100 micrometers in a direction in which the first thinning groove is directed toward the second thinning groove and is perpendicular to a boundary where the first thinning groove and the second thinning groove intersect.
6. The display panel according to claim 1, characterized in that:
and the vertical projection of the polarizer on the second substrate is overlapped with the vertical projection part of the touch control driving board on the second substrate.
7. The display panel according to claim 1, characterized in that:
the thinning groove penetrates the non-display area in a direction parallel to an edge of the thinning groove adjacent to the display area.
8. The display panel according to claim 1, characterized in that:
the optical adhesive layer is made of thermal curing adhesive.
9. The display panel according to claim 2, characterized in that:
the second substrate comprises a touch electrode layer, and the touch electrode layer is electrically connected with the binding pins;
the second substrate further comprises a packaging glass or a thin film packaging layer;
the touch electrode layer is arranged on the surface of the packaging glass far away from the first substrate, or the touch electrode layer is arranged on the surface of the thin film packaging layer far away from the first substrate, or the touch electrode layer is arranged in the thin film packaging layer.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
CN201910696860.6A 2019-07-30 2019-07-30 Display panel and display device Active CN110262702B (en)

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CN201910696860.6A CN110262702B (en) 2019-07-30 2019-07-30 Display panel and display device
PCT/CN2020/079259 WO2021017478A1 (en) 2019-07-30 2020-03-13 Display panel and display device

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