CN116110927A - Display panel and display device - Google Patents
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- CN116110927A CN116110927A CN202310311395.6A CN202310311395A CN116110927A CN 116110927 A CN116110927 A CN 116110927A CN 202310311395 A CN202310311395 A CN 202310311395A CN 116110927 A CN116110927 A CN 116110927A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
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Abstract
The embodiment of the invention provides a display panel and a display device. The display panel comprises a first substrate and a second substrate which are overlapped; the first substrate comprises a first substrate and a light-emitting device, the light-emitting device is positioned on one side of the first substrate, which is close to the second substrate, and one side of the first substrate, which is far away from the second substrate, is a display surface of the display panel; the first substrate comprises a connecting plate, and the connecting plate is positioned on one side of the first substrate, which is close to the second substrate; the second substrate comprises an opposite plate and a binding plate, wherein the opposite plate is positioned on one side of the second substrate, which is close to the first substrate, and the binding plate is positioned on one side of the second substrate, which is far away from the first substrate; the opposite plates are correspondingly and electrically connected with the connecting plates, and at least part of the opposite plates are electrically connected with the binding plates through holes penetrating through the second substrate. The invention can narrow the frame to realize the design without the frame.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
Along with the proposal of concepts such as a full screen, no frame and the like, the requirements of display products on narrow frames are higher and higher. In practice, structures such as a driving circuit and a driving chip are required to be arranged in the frame area of the display panel, so that further compression of the frame space cannot be realized, and narrowing of the frame of the display panel is limited.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for solving the technical problem that a narrow frame is limited in the prior art.
In a first aspect, an embodiment of the present invention provides a display panel including a first substrate and a second substrate stacked;
the first substrate comprises a first substrate and a light-emitting device, the light-emitting device is positioned on one side of the first substrate, which is close to the second substrate, and one side of the first substrate, which is far away from the second substrate, is a display surface of the display panel; the first substrate comprises a connecting plate, and the connecting plate is positioned on one side of the first substrate, which is close to the second substrate;
the second substrate comprises an opposite plate and a binding plate, wherein the opposite plate is positioned on one side of the second substrate, which is close to the first substrate, and the binding plate is positioned on one side of the second substrate, which is far away from the first substrate; the opposite plates are correspondingly and electrically connected with the connecting plates, and at least part of the opposite plates are electrically connected with the binding plates through holes penetrating through the second substrate.
In a second aspect, based on the same inventive concept, an embodiment of the present invention further provides a display apparatus, including a display panel provided by any embodiment of the present invention.
The display panel and the display device provided by the embodiment of the invention have the following beneficial effects: the display panel comprises a first substrate and a second substrate which are stacked, wherein a light emitting device and a connecting plate are arranged on the first substrate, one side, far away from the second substrate, of the first substrate is a display surface of the display panel, an opposite plate is arranged on the second substrate, the connecting plate and the opposite plate are correspondingly and electrically connected, so that transmission of electric signals between the first substrate and the second substrate is realized, and a binding plate on the second substrate is electrically connected with the opposite plate through a through hole penetrating through the second substrate. The embodiment of the invention realizes the signal transmission path from the second substrate to the first substrate by connecting the binding plate and the opposite plate through the through holes and correspondingly and electrically connecting the opposite plate and the connecting plate, and the size of the frame of the display panel is not influenced by the through holes penetrating through the second substrate because the light emitting device is arranged on the first substrate and the light rays emitted from the light emitting device to the display surface for display do not pass through the second substrate, so that the frame is narrowed to realize the design without the frame. In addition, the second substrate has certain supporting strength, and in the binding and pressing process of the binding display driving structure, the second substrate can play a role in supporting the circuit in the first substrate to protect the circuit from being damaged by pressure in the pressing process. The design binding yield is high and the process is easy to realize by adopting the embodiment of the invention.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a related art;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view taken at the location of line A-A' in FIG. 8;
FIG. 10 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 12 is a schematic view of another display panel according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 14 is a schematic view of another display panel according to an embodiment of the present invention;
FIG. 15 is a schematic view of another display panel according to an embodiment of the present invention;
fig. 16 is a schematic diagram of a display device according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Fig. 1 is a schematic diagram of a related art, as shown in fig. 1, a display panel includes a glass substrate 01, a driving layer 02 and a light emitting device 03 located above the driving layer 02, holes are drilled in the glass substrate 01, and an electric signal on one side of the driving layer 02 is led to one side of the glass substrate 01, which is far away from the driving layer 02, by using a via 04 on the glass substrate 01, so that a display driving chip 05 can be bound on the back surface of the glass substrate 01, and the display driving chip 05 bound on the back surface has no influence on a frame of the display panel, thereby achieving the purpose of narrowing the frame. However, in the prior art, the thickness of the glass substrate is larger, so that the diameter of the via hole 04 is larger, and the via hole 04 still occupies a certain area of the frame area, which is not beneficial to realizing the design without frame.
In order to solve the problems in the prior art, an embodiment of the invention provides a display panel, which comprises a first substrate and a second substrate which are stacked, wherein a light emitting device is arranged on the first substrate, a binding plate capable of binding a display driving structure is arranged on the second substrate, and an electric signal provided by the display driving structure is led to the first substrate through the second substrate to drive the light emitting device. The connecting plates and the opposite plates are respectively arranged on the first substrate and the second substrate to realize electric connection, the binding plate on the second substrate is connected to the opposite plates through the through holes penetrating through the second substrate, and the display surface of the display panel is arranged on one side, far away from the second substrate, of the first substrate, so that the through holes on the second substrate cannot occupy the space of the frame area of the display panel, the purpose of narrowing the frame is achieved, and the borderless design is facilitated.
Fig. 2 is a schematic view of a display panel according to an embodiment of the present invention, and as shown in fig. 2, the display panel includes a first substrate 10 and a second substrate 20 stacked together. Wherein,,
the first substrate 10 includes a first substrate 11 and light emitting devices 12, the light emitting devices 12 being located at a side of the first substrate 11 near the second substrate 20, the first substrate 10 including connection plates 13, the connection plates 13 being located at a side of the first substrate 10 near the second substrate 20. The first substrate 11 may be a flexible substrate or may be a rigid substrate, and in one embodiment, the first substrate 11 is a glass substrate. The side of the first substrate 10 away from the second substrate 20 is a display surface of a display panel, the display surface is a front surface of the display panel, an image is displayed on the front surface of the display panel, that is, light emitted by the light emitting device 12 exits from the side of the first substrate 10 away from the second substrate 20, and the light emitting direction of the light emitting device 12 is indicated by an arrow in fig. 2. Accordingly, it is understood that the second substrate 20 is positioned at the back of the display surface of the display panel. The light emitting device 12 is a light-emitting diode (LED), such as a Micro-LED or a Mini-LED. The light emitting device 12 may include devices of three colors of red, green, and blue. The region where the plurality of light emitting devices 12 are arranged is a display region of the display panel.
The second substrate 20 includes an opposite plate 22 and a binding plate 23, the opposite plate 22 being positioned at a side of the second substrate 20 close to the first substrate 10, the binding plate 23 being positioned at a side of the second substrate 20 far from the first substrate 10; the second substrate 20 includes a second substrate 21, that is, an opposite plate 22 and a binding plate 23 are respectively located at both sides of the second substrate 21, and the second substrate 21 may be a flexible substrate or a rigid substrate.
Wherein at least part of the opposite plates 22 is electrically connected to the bonding plate 23 through a via V penetrating the second substrate 20. The opposite plate 22 and the connection plate 13 are correspondingly and electrically connected, so that transmission of electric signals between the first substrate 10 and the second substrate 20 is realized. The opposing plates 22 and the connecting plates 13 may be the same or different, and the number of opposing plates 22 is greater than or equal to the number of binding plates 23. The binding plate 23 may be used to bind the display driving structure. In one manufacturing method, the first substrate 10 and the second substrate 20 are manufactured separately, then the two substrates are aligned and bonded, and the opposing plate 22 and the connecting plate 13 are correspondingly bonded and connected in an alignment and bonding process.
The display panel provided by the embodiment of the invention comprises a first substrate 10 and a second substrate 20 which are stacked, wherein a light emitting device 12 and a connecting plate 13 are arranged on the first substrate 10, one side of the first substrate 10 far away from the second substrate 20 is a display surface of the display panel, an opposite plate 22 is arranged on the second substrate 20, and the connecting plate 13 and the opposite plate 22 are correspondingly and electrically connected to realize transmission of electric signals between the first substrate 10 and the second substrate 20. The second substrate 20 is further provided with a binding plate 23, the binding plate 23 is arranged on the back surface of the display panel, the binding plate 23 is electrically connected with the opposite plate 22 through a via hole V penetrating through the second substrate 20, and the binding plate 23 can be used for binding the display driving structure. The binding plate 23 and the opposite plate 22 are connected through the via hole V, and the opposite plate 22 and the connecting plate 13 are correspondingly and electrically connected, so that a signal transmission path from the second substrate 20 to the first substrate 20 is realized, and the light emitting device 12 is arranged on the first substrate 10, and the light emitted from the light emitting device 12 to the display surface for display does not pass through the second substrate 20, so that the size of the frame of the display panel is not influenced by the via hole V penetrating through the second substrate 20, and the frame is narrowed to realize the design without the frame.
In addition, the binding plate 23 is disposed on a side of the second substrate 20 away from the first substrate 10, and the display driving structure can be bound by using the binding plate 23 after the first substrate 10 and the second substrate 20 are correspondingly attached, so that the display driving structure does not affect the flatness of the first substrate 10 and the second substrate 20 corresponding to each other. In addition, the second substrate 20 has a certain supporting strength, and in the binding and pressing process of the binding display driving structure, the second substrate 20 can play a supporting role to protect the circuit in the first substrate 10 and prevent the circuit from being damaged due to pressure in the pressing process. The design binding yield is high and the process is easy to realize by adopting the embodiment of the invention.
In some embodiments, fig. 3 is a schematic view of another display panel provided in the embodiment of the present invention, as shown in fig. 3, a surface of the light emitting device 12 near a side of the first substrate 11 is a light emitting surface; the light emitting device 12 includes a first electrode 121 and a second electrode 122, and the first electrode 121 and the second electrode 122 are each disposed on a side of the light emitting device 12 remote from the first substrate 11. One of the first electrode 121 and the second electrode 122 is an anode, and the other is a cathode. The light emitted from the light emitting surface of the light emitting device 12 is emitted to the first substrate 11 and then emitted to the display panel, and the first electrode 121 and the second electrode 122 do not block the light emitted from the light emitting device 12, so that the light emitting efficiency of the light emitting device 12 can be improved.
In some embodiments, as shown in fig. 3, the first substrate 10 includes a pixel circuit 14 and a first power supply structure 15 on the same side of the first substrate 11 as the light emitting device 12. Only one transistor in the pixel circuit 14 is schematically shown in fig. 3, the pixel circuit 14 may be any of those in the prior art, the light emitting device 12 is electrically connected to the pixel circuit 14, and the pixel circuit 14 is used to drive the light emitting device 12 to emit light. The first substrate 10 further includes a first insulating layer 16, a first jumper 17, and a second jumper 18, the first insulating layer 16 covering the pixel circuit 14, the light emitting device 12, and the first power supply structure 15 on a side of the light emitting device 12 away from the first substrate 11, the first jumper 17 and the second jumper 18 being located on a side of the first insulating layer 16 away from the first substrate 11; one end of the first crossover wire 17 is electrically connected to the first electrode 121 through a first via V1 penetrating the first insulating layer 16, and the other end of the first crossover wire 17 is electrically connected to the pixel circuit 14 through a second via V2 penetrating the first insulating layer 16; one end of the second jumper wire 18 is electrically connected to the second electrode 122 through a third via hole V3 penetrating the first insulating layer 16, and the other end of the second jumper wire 18 is electrically connected to the first power supply structure 15 through a fourth via hole V4 penetrating the first insulating layer 16. Alternatively, the first electrode 121 is an anode, the second electrode 122 is a cathode, the pixel circuit 14 is electrically connected to the anode of the light emitting device 12, and the first power supply structure 15 provides a negative power supply voltage. Optionally, the first insulating layer 16 comprises an organic material, such that the first insulating layer 16 can function as a planarisation.
In this embodiment, the pixel circuit 14 and the light emitting device 12 are both disposed on the first substrate 10, and when in fabrication, the pixel circuit 14 and the first power structure 15 are fabricated on the first substrate 11, then the light emitting device 12 is transferred to the corresponding position on the first substrate 10, then the first insulating layer 16 and the punching process are fabricated, and then the first jumper 17 and the second jumper 18 are fabricated to electrically connect the light emitting device 12 with the pixel circuit 14 and the first power structure 15. Each light emitting device 12 needs to be driven by its corresponding pixel circuit 14, so that the pixel circuit 14 occupies a large area space on the substrate, and the position of the second substrate 20 where the counter plate 22, the via hole V, and some of the wirings are disposed is not limited by the pixel circuit 14 for driving the light emitting device 12 disposed on the first substrate 10. For example, the opposite plate 22 and the via hole V may be disposed relatively closer to the middle of the second substrate 20, so that occupation of the display panel frame can be further reduced, which is beneficial to narrowing the frame to realize a borderless design.
In some embodiments, a second power structure is further disposed on the first substrate 10, and the power input terminal of the pixel circuit 14 is electrically connected to the second power structure, the second power structure provides a positive power voltage, and the first power structure 15 provides a negative power voltage.
In some embodiments, fig. 4 is a schematic diagram of another display panel according to an embodiment of the present invention. Fig. 4 illustrates an exploded view of the display panel, showing a schematic top view of the first substrate 10 and a schematic top view of the second substrate 20. As shown in fig. 4, the first substrate 10 includes a constant voltage structure 19 on the same side of the first substrate 11 as the light emitting device 12, the constant voltage structure 19 transmitting a constant voltage signal; the connecting plate 13 comprises a first connecting plate 13-1, and the constant voltage structure 13 is electrically connected with the first connecting plate 13-1; the first substrate 10 is provided with first connection plates 13-1 at both ends in a first direction a parallel to a plane of the first substrate 11, and the first substrate 10 is provided therein with data lines and gate lines extending in directions intersecting each other, the first direction a being the same as the extending direction of the data lines or gate lines. The constant voltage structure 19 transmits a constant voltage signal, and the constant voltage structure 19 includes any one of a reset signal line, an anode power line, and a cathode power line, wherein the reset signal line provides a reset signal, the anode power line provides an anode power voltage, and the cathode power line provides a cathode power voltage. The size and the number of the first connection plates 13-1 are not limited in the embodiment of the present invention, and one first connection plate 13-1 may be provided at one end in the first direction a or a plurality of first connection plates 13-1 arranged in the same direction may be provided. As shown in fig. 4, the counter plate 22 of the second substrate 20 includes a first counter plate 22-1, and the first counter plate 22-1 is electrically connected to the first connection plate 13-1. The size and the number of the first opposing plates 22-1 are not limited in the embodiment of the present invention, and the number and the size of the first opposing plates 22-1 may be set in cooperation with the first connecting plate 13-1. In this embodiment, both ends in the first direction a may be upper and lower ends or left and right ends when the display panel is in use. The first connecting plates 13-1 are arranged at two ends along the first direction a, signals are provided for the first connecting plates 13-1 through the corresponding first opposite plates 22-1, constant voltage signals are provided for the constant voltage structure 19 through the first connecting plates 13-1, so that the voltage drop of the transmitted constant voltage signals can be reduced, the uniformity of the constant voltage signals in the plane is improved, and the display uniformity is further improved.
In fig. 4, a display area AA and a non-display area NA of the display panel are schematically shown on the first substrate 10, and optionally, the constant voltage structure 19 is located in the display area AA, and the first connection plate 13-1 is located in the non-display area NA. The constant pressure structure 19 is also shown schematically in fig. 4, and is not a limitation of the present invention.
In some embodiments, as shown in fig. 4, the constant voltage structure 19 includes a plurality of traces extending along the first direction a, and each trace in the constant voltage structure 19 is connected to the first connection board 13-1. In another connection manner, each trace in the constant voltage structure 19 may be connected to a constant voltage bus, and the constant voltage bus is electrically connected to the first connection board 13-1, which is not illustrated in the drawings.
In one embodiment, the constant voltage structure 19 in fig. 4 is a positive power line, which provides a positive power voltage, and the power input terminal of the pixel circuit 14 is electrically connected to the positive power line. The positive supply line may also be referred to as a second supply structure with respect to the first supply structure 15.
In the embodiment of fig. 4, only the first opposing plate 22-1 provided corresponding to the first connecting plate 13-1 is shown in the second substrate 20, and the position of the via hole V is not shown.
In some embodiments, fig. 5 is a schematic diagram of another display panel according to an embodiment of the present invention, and fig. 5 illustrates a second substrate 20, so as to respectively provide a first opposite plate 22-1 at two ends in a first direction a. As shown in fig. 5, the first opposing plates 22-1 provided on the second substrate 20 for both ends in the first direction a are electrically connected by the first connecting line 24, and the first opposing plate 22-1 at one end position thereof is electrically connected with the bonding plate 23 by the via hole V. This arrangement can reduce the number of the via holes V provided in the second substrate 20.
In other embodiments, the second substrate 20 is provided with the via holes V for the first opposing plates 22-1 provided at both ends in the first direction a, which is not illustrated in the drawings.
In some embodiments, fig. 6 is a schematic diagram of another display panel provided in the embodiment of the present invention, fig. 6 illustrates a first substrate 10, and as shown in fig. 6, a data line 31 extending along a first direction a is disposed on the first substrate 10, and the constant voltage structure 19 includes a reset signal line 32, where the reset signal line 32 extends along a second direction b, and the second direction b intersects the first direction a. The first connection board 13-1 includes a first sub-connection board 13-1a connected to the reset signal line 32, and both ends of the first substrate 10 in the first direction a are provided with the first sub-connection board 13-1a. The first substrate 10 further comprises at least one reset bus 33, one end of the reset bus 33 is connected with the first sub-connection plate 13-1a positioned at one end of the first substrate 10 in the first direction a, and the other end of the reset bus 33 is connected with the first sub-connection plate 13-1a positioned at the other end of the first substrate 10 in the first direction a; the reset bus 33 is electrically connected to the plurality of reset signal lines 32. Fig. 6 illustrates that two reset buses 33 are disposed on the first substrate 10, and two ends of the reset signal line 32 are respectively connected to one reset bus 33. In this embodiment, the reset bus 33 is used to guide the signal ends of the reset signal line 32 to the two ends of the first direction a, and the first sub-connection plates 13-1a disposed at the two ends are electrically connected to the second substrate 20, so that the voltage drop for transmitting the reset signal can be reduced, the uniformity of the in-plane reset signal is improved, and the display uniformity is further improved. In addition, the space of the two ends of the display panel in the second direction b can be saved, for example, the two ends in the second direction b can be provided with connecting plates connected with other circuit structures (such as a shift driving circuit), and the connecting plates are arranged on the peripheral frames of the display area in a scattered manner, so that the narrowing of the frames is facilitated.
The pixel circuit in the embodiment of the invention can be any one of the prior art. In some embodiments, the pixel circuit includes a driving transistor, a data writing transistor, an output terminal of the data writing transistor being electrically connected to a gate electrode of the driving transistor, at least a gate line connected to the gate electrode of the data writing transistor, and a data line connected to an input terminal of the data writing transistor being disposed in the first substrate 10. In other embodiments, the pixel circuit includes a driving transistor, a data writing transistor, a threshold compensation transistor, a gate reset transistor, a light emission control transistor, and an electrode reset transistor, where the gates of the data writing transistor and the threshold compensation transistor are connected to a first scan line, the gates of the gate reset transistor and the electrode reset transistor are connected to a second scan line, the gate of the light emission control transistor is connected to a light emission control line, a data line and a gate line are disposed in the first substrate 10, and the gate line includes at least a first scan line, a second scan line, and a light emission control line.
In some embodiments, the connection board 13 includes at least a data connection board connected to a data line. Fig. 7 is a schematic diagram of another display panel according to an embodiment of the invention. Fig. 7 illustrates a disassembled view of the display panel, showing a schematic top view of the first substrate 10 and a schematic top view of the second substrate 20. As shown in fig. 7, the first substrate 10 includes a plurality of data lines 31 extending in a column direction y, the plurality of data lines 31 being arranged in a row direction x, the row direction x intersecting the column direction y. The connection board 13 includes a data connection board 13-d, and one end of the data line 31 is electrically connected to the data connection board 13-d. The counter plate 22 on the second substrate 10 includes data counter plates 22-d, the data counter plates 22-d being electrically connected to the data connection plates 13-d in a one-to-one correspondence, and the data counter plates 22-d being further electrically connected to a bonding plate (not shown in fig. 7) through vias penetrating the second substrate 20. In this embodiment, the data line 31 is configured to guide signals to the second substrate 20 through the data connection board 13-d and the data opposite board 22-d, and no circuit structure such as a fan-out line connected to the data line 31 is required to be disposed on the first substrate 10, so that the space of a non-display area can be saved, and the design of narrowing the frame without the frame is facilitated.
When the embodiment of fig. 7 is applied in combination with the embodiment of fig. 6, the first direction a and the column direction y are the same direction, and the second direction b and the row direction x are the same direction.
In other embodiments, fig. 8 is a schematic diagram of another display panel according to an embodiment of the present invention. Fig. 8 illustrates a disassembled view of the display panel, showing a schematic top view of the first substrate 10 and a schematic top view of the second substrate 20. As shown in fig. 8, the first substrate 10 includes a plurality of gate lines 34; the pixel circuit (not shown in fig. 8) provided on the first substrate 10 is electrically connected to the gate line 34. The connection plate 13 includes a second connection plate 13-2, and at least one end of the gate line 34 is electrically connected to the second connection plate 13-2; the opposite plate 22 includes a second opposite plate 22-2, and the second opposite plate 22-2 is correspondingly electrically connected with the second connection plate 13-2; the second substrate 20 includes a shift driving circuit 40, the shift driving circuit 40 includes a plurality of shift registers 41 in cascade connection, an output end of each shift register 41 is electrically connected to the second opposite plate 22-2, and each shift register 41 may be any structure capable of realizing a signal shift function in the prior art, and a block diagram is illustrated in fig. 8. In this embodiment, the shift driving circuit 40 is disposed on the second substrate 20, and the shift register 41 supplies the gate signal to the corresponding gate line 34 through the correspondingly connected second opposite plate 22-2 and second connection plate 13-2, so that the wiring space on the first substrate 10 can be further saved. Compared with the scheme that the shift driving circuit is arranged in the frame area of the display panel in the prior art, the light emitted from the light emitting device 12 to the display surface on the first substrate 10 does not pass through the second substrate 20, and the shift driving circuit 40 is arranged on the second substrate 20, so that the left frame and the right frame of the display panel can be greatly reduced without occupying the space of the frame.
As shown in fig. 8, the gate line 34 extends in a third direction c, and the plurality of gate lines 34 are arranged in a fourth direction d, the third direction c crossing the fourth direction d; at least one end of the first substrate 10 in the third direction c, a plurality of second connection plates 13-2 are arranged in the fourth direction d. In fig. 8, two ends of the gate line 34 are connected to one second connection plate 13-2, respectively, and second opposite plates 22-2 are disposed at left and right ends of the second substrate 20 in the third direction c, respectively. The arrangement is such that the signal on the gate line 34 is transmitted from both ends to the middle on the first substrate 10, and the difference in voltage drop at different positions of the gate line 34 can be reduced, thereby improving the uniformity of brightness of the light emitting devices driven by the plurality of pixel circuits connected to the gate line 34.
In other embodiments, one end of the gate line 34 is connected to one second connection plate 13-2, and a signal is supplied from one second connection plate 13-2 to the gate line 34, so that the signal in the gate line 34 is transmitted from one end to the other end, i.e., driven on one side. The figures are not illustrated here.
In the embodiment of fig. 8, two shift driving circuits 40 are provided in the second substrate 20 for driving the gate lines 34, and the two shift driving circuits 40 transmit the same signal. In another embodiment, the second opposite plates 22-2 are respectively disposed at the left and right ends of the second substrate 20 in the third direction c, and the second opposite plates 22-2 respectively disposed at the two ends of the third direction c are driven by one shift driving circuit 40, that is, the output end of one shift register 41 is connected to two second opposite plates 22-2, and the two second opposite plates 22-2 respectively correspond to two second connection plates 13-2 connected to one gate line 34. This arrangement also enables double-sided driving of the gate lines 34, improving luminance uniformity of the light emitting device. Meanwhile, the wiring space on the second substrate 20 can be saved, the process consumables can be saved, and the cost can be reduced.
The gate line 34 in the embodiment of fig. 8 may be, for example, a scan line connected to the gate of the data writing transistor, a scan line connected to the gate of the gate reset transistor, or a light emission control line connected to the gate of the light emission control transistor.
In some embodiments, the gate line 34 includes a scan line connected to the gate of the data writing transistor and a light emission control line connected to the gate of the light emission control transistor, that is, the gate line 34 includes two signal lines. It will be appreciated that two second connection plates 13-2 are correspondingly provided on the first substrate 10, and two second opposite plates 22-2 and two displacement driving circuits are provided on the second substrate 20, which are not illustrated in the drawings.
In some embodiments, fig. 9 is a schematic cross-sectional view of fig. 8 at the position of the line A-A', and as shown in fig. 9, the second substrate 20 includes a second substrate 21, and the shift driving circuit 40 and the opposite plate 22 are located on the same side of the second substrate 21, that is, the shift driving circuit 40 is located on the side of the second substrate 21 near the first substrate 10 in the display panel. The arrangement is favorable for packaging and protecting the shift driving circuit 40, reduces the risk of line corrosion of the shift driving circuit 40, and improves the reliability of the display panel,
As seen in fig. 8 and 9, the shift driving circuit 40 further includes a driving signal line 42, the shift register 41 is electrically connected to the driving signal line 42, and the driving signal line 42 is located on a side of the second substrate 21 close to the first substrate 10; the driving signal line 42 is electrically connected to the bonding pad 23 through a via hole V penetrating the second substrate 20. In this embodiment, the driving signal line 42 and the shift register 41 are disposed on the same side of the second substrate 21, and the driving signal line 42 and the shift register 41 are connected without making a large-sized via hole penetrating the second substrate 20, so that the connection mode of the driving signal line 42 and the shift register 41 is simpler, the electrical connection reliability is higher, and the performance is more stable.
In addition, only one drive signal line 42 in the shift drive circuit 40 is illustrated in fig. 8. The driving signal line 42 includes at least a start signal line, a clock signal line, and a power supply line.
In some embodiments, fig. 10 is a schematic diagram of another display panel provided in the embodiment of the present invention, taking the second substrate 20 illustrated in fig. 8 as an example, as shown in fig. 10, the second substrate 20 includes a light shielding layer 50, and the light shielding layer 50 is located on a side of the shift driving circuit 40 away from the second substrate 21. Fig. 10 illustrates a top view of the second substrate 20, and it can be understood that the top view is parallel to a plane direction perpendicular to the second substrate 21. As can be seen from fig. 10, the light shielding layer 50 covers at least the plurality of shift registers 41 in a direction perpendicular to the plane of the second substrate 21. In the embodiment of the invention, the light emitted from the light emitting device 12 on the first substrate 10 to the display surface for display does not pass through the second substrate 20, but the light emitted from the light emitting device 12 may be reflected inside the first substrate 10 and then directed to the second substrate 20. The light shielding layer 50 is provided to shield the reflected light beam to the second substrate 20, so that the light beam can be prevented from affecting the stability of the transistor characteristics in the shift register 41, and the stable performance of the shift driving circuit 40 can be ensured.
In some embodiments, fig. 11 is a schematic view of another display panel provided in the embodiment of the present invention, as shown in fig. 11, the display panel further includes a functional layer 60, the functional layer 60 covers a surface of the second substrate 20 near the first substrate 10, and the functional layer 60 exposes the opposite plate 22; wherein the functional layer 60 is a reflective layer or a light absorbing layer. Light emitted from the light emitting device 12 may be reflected inside the first substrate 10 and directed to the second substrate 20. When the functional layer 60 is a reflective layer, the reflective layer can reflect the light beam that is directed to the second substrate 20, so that the light beam is emitted again in the light emitting direction, thereby improving the light emitting efficiency of the light emitting device 12. When the functional layer 60 is a light-absorbing layer, the light-absorbing layer absorbs light emitted to the second substrate 20, for example, ambient light emitted to the second substrate 20 via the first substrate 10, thereby reducing the reflectivity of the display panel to ambient light,
in some embodiments, fig. 12 is a schematic view of another display panel provided in the embodiment of the present invention, as shown in fig. 12, the connection plate 13 and the opposite plate 22 are electrically connected by conductive adhesive 61. In other embodiments, the connection plate 13 and the counter plate 22 are electrically connected by a eutectic layer or silver paste. The connection process of the connection plate 13 and the opposite plate 22 is mature, the connection reliability is high, and the display panel formed by the first substrate 10 and the second substrate 20 can be ensured to have better mechanical stability.
In some embodiments, fig. 13 is a schematic view of another display panel provided in the embodiment of the present invention, fig. 13 is a top view of a first substrate 10, and as shown in fig. 13, the first substrate 10 includes a cutting edge 70 surrounding the periphery of the first substrate 10, where the cutting edge 70 is an edge in the peripheral direction of the first substrate 10. A plurality of connecting plates 13 are arranged on one side of the first substrate 10 close to one cutting edge 70, and the distance between the connecting plates 13 and the cutting edge 70 is D, wherein D is more than or equal to 100 mu m. The connection board 13 in the embodiment of fig. 13 comprises the data connection board 13-d illustrated in fig. 7. In this embodiment, the distance between the connecting plate 13 and the cutting edge 70 is not less than 100 μm, which means that the connecting plate 13 is disposed at a position relatively closer to the middle of the first substrate 10, so that occupation of the non-display area of the display panel by the connecting plate 13 can be reduced, so as to realize a borderless design.
It will be appreciated that the opposing plate 22 on the second substrate 20 may be disposed according to the position of the connection plate 13, and that when the connection plate 13 is disposed relatively closer to the middle of the first substrate 10, the opposing plate 22 is correspondingly disposed closer to the middle of the second substrate 20.
The embodiment of fig. 13 is illustrated with the web 13 being provided at only one end of one of the cut edges 70. In other embodiments, the first substrate 10 is provided with a data connection plate 13-d for connecting the data lines 31 and a second connection plate 13-2 for connecting the gate lines 34, and the connection plates 13 are required to be disposed at the ends of at least two cut edges, which is not illustrated in the drawings.
In some embodiments, as shown in fig. 2, at least one connection plate 13 overlaps the light emitting device 12 in a direction e perpendicular to a plane in which the first substrate 11 is located. I.e. the connection plate 13 may overlap the display area. The arrangement reduces the occupation of the connecting plate 13 on the non-display area of the display panel, and can be beneficial to realizing the design without a frame.
In other embodiments, at least one connection plate 13 overlaps the pixel circuits in a direction perpendicular to the plane of the first substrate 11, which is not shown in the drawings, so that the occupation of the connection plate 13 on the non-display area of the display panel can be reduced.
In an embodiment, fig. 14 is a schematic view of another display panel provided in the embodiment of the present invention, as shown in fig. 14, a connecting plate 13 is disposed at a middle position of the first substrate 10, so as to avoid a cutting edge of the first substrate 10. An opposite plate 22 corresponding to the connection plate 13 is provided on the second substrate 20, and the opposite plate 22 is connected to the second connection line 25 through a via hole (not shown in fig. 14) penetrating the second substrate 20, and then connected to the bonding plate 23 through the second connection line 25, on a side of the second substrate 20 remote from the first substrate 10. A plurality of binding plates 23 are arranged in a row so as to facilitate binding with the display driving structure.
In other embodiments, fig. 15 is a schematic view of another display panel according to an embodiment of the present invention, and as shown in fig. 15, the display panel further includes a display driving structure 80, where the display driving structure 80 is connected to the binding plate 23 in a binding manner. The display driving structure 80 is a display driving chip. In other embodiments, the display driver structure 80 is a flexible circuit board with a driver chip mounted thereon, which is not illustrated in the drawings.
Based on the same inventive concept, an embodiment of the present invention provides a display device, and fig. 16 is a schematic diagram of the display device provided by the embodiment of the present invention, and as shown in fig. 16, the display device includes a display panel 100 provided by any embodiment of the present invention. The structure of the display panel 100 is already described in the above embodiments, and will not be described here again. The display device provided by the embodiment of the invention can be electronic display equipment such as a computer, a tablet, a billboard, a vehicle-mounted display and the like.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (16)
1. A display panel, comprising a first substrate and a second substrate stacked;
the first substrate comprises a first substrate and a light-emitting device, the light-emitting device is positioned on one side of the first substrate, which is close to the second substrate, and one side of the first substrate, which is far away from the second substrate, is a display surface of the display panel; the first substrate comprises a connecting plate, and the connecting plate is positioned on one side of the first substrate, which is close to the second substrate;
the second substrate comprises an opposite plate and a binding plate, the opposite plate is positioned on one side of the second substrate close to the first substrate, and the binding plate is positioned on one side of the second substrate far away from the first substrate; the opposite plates are correspondingly and electrically connected with the connecting plates, and at least part of the opposite plates are electrically connected with the binding plates through holes penetrating through the second substrate.
2. The display panel of claim 1, wherein the display panel comprises,
the surface of the light-emitting device, which is close to one side of the first substrate, is a light-emitting surface;
the light emitting device includes a first electrode and a second electrode, both of which are disposed at a side of the light emitting device remote from the first substrate.
3. The display panel of claim 2, wherein the display panel comprises,
the first substrate comprises a pixel circuit and a first power supply structure which are positioned on the same side of the first substrate as the light emitting device;
the first substrate further comprises a first insulating layer, a first jumper wire and a second jumper wire, wherein the first insulating layer covers the pixel circuit, the light emitting device and the first power supply structure on one side of the light emitting device, which is far away from the first substrate, and the first jumper wire and the second jumper wire are positioned on one side of the first insulating layer, which is far away from the first substrate;
one end of the first crossover wire is electrically connected with the first electrode through a first via penetrating through the first insulating layer, and the other end of the first crossover wire is electrically connected with the pixel circuit through a second via penetrating through the first insulating layer;
one end of the second jumper wire is electrically connected with the second electrode through a third via hole penetrating through the first insulating layer, and the other end of the second jumper wire is electrically connected with the first power supply structure through a fourth via hole penetrating through the first insulating layer.
4. The display panel of claim 1, wherein the display panel comprises,
the first substrate comprises a constant voltage structure which is positioned on the same side of the first substrate as the light emitting device, and the constant voltage structure transmits a constant voltage signal;
the connecting plate comprises a first connecting plate, and the constant voltage structure is electrically connected with the first connecting plate; the opposite plates comprise first opposite plates which are correspondingly and electrically connected with the first connecting plates;
the first connecting plates are arranged at two ends of the first substrate in the first direction.
5. The display panel of claim 4, wherein the display panel comprises,
the constant voltage structure comprises a reset signal line, wherein the reset signal line extends along a second direction, and the second direction is intersected with the first direction;
the first connecting plate comprises a first sub-connecting plate connected with the reset signal line, and the first sub-connecting plates are arranged at two ends of the first substrate in the first direction;
the first substrate further comprises at least one reset bus, one end of the reset bus is connected with the first sub-connecting plate positioned at one end of the first substrate in the first direction, and the other end of the reset bus is connected with the first sub-connecting plate positioned at the other end of the first substrate in the first direction;
the reset bus is electrically connected with a plurality of reset signal lines.
6. The display panel of claim 1, wherein the display panel comprises,
the first substrate includes a plurality of gate lines;
the connection board comprises a second connection board, and at least one end of the gating line is electrically connected with the second connection board; the opposite plates comprise second opposite plates, and the second opposite plates are correspondingly and electrically connected with the second connecting plates;
the second substrate comprises a shift driving circuit, the shift driving circuit comprises a plurality of shift registers in cascade connection, and the output ends of the shift registers are electrically connected with the second opposite plate.
7. The display panel of claim 6, wherein the display panel comprises,
the second substrate comprises a second substrate, the shift driving circuit is arranged on the second substrate and is close to DD225505I
Near one side of the first substrate.
8. The display panel of claim 7, wherein the display panel comprises,
the shift driving circuit further comprises a driving signal line, the shift register is electrically connected with the driving signal line, and the driving signal line is positioned on one side of the second substrate, which is close to the first substrate;
the driving signal line is electrically connected with the binding plate through a via hole penetrating through the second substrate.
9. The display panel of claim 7, wherein the display panel comprises,
the second substrate comprises a shading layer, and the shading layer is positioned on one side of the shift driving circuit, which is far away from the second substrate;
and along the direction vertical to the plane of the second substrate, the shading layer at least covers a plurality of shift registers.
10. The display panel of claim 6, wherein the display panel comprises,
the gate line extends along a third direction, and a plurality of gate lines are arranged along a fourth direction, the third direction crossing the fourth direction;
at least one end of the first substrate in the third direction, a plurality of the second connection plates are arranged along the fourth direction.
11. The display panel of claim 1, wherein the display panel comprises,
the display panel further includes a functional layer covering a surface of the second substrate near the first substrate side, and exposing the opposite plate;
the functional layer is a reflecting layer or a light absorbing layer.
12. The display panel of claim 1, wherein the display panel comprises,
the connecting plate and the opposite plate are electrically connected through one of conductive adhesive, eutectic layer and silver paste.
13. The display panel of claim 1, wherein the display panel comprises,
the first substrate includes a cutting edge surrounding the periphery of the first substrate,
the distance between the connecting plate and the cutting edge is D, and D is more than or equal to 100 mu m.
14. The display panel of claim 1, wherein the display panel comprises,
at least one of the connection plates and the hair DD225505I along a direction perpendicular to the plane of the first substrate
Overlapping the optical devices;
or, the first substrate further includes a pixel circuit, and at least one of the connection plates overlaps the pixel circuit along a direction perpendicular to a plane of the first substrate.
15. The display panel of claim 1, wherein the display panel comprises,
the display panel further comprises a display driving structure, and the display driving structure is in binding connection with the binding plate.
16. A display device comprising the display panel of any one of claims 1 to 15.
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| CN202310311395.6A CN116110927A (en) | 2023-03-28 | 2023-03-28 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116404011A (en) * | 2023-06-07 | 2023-07-07 | 惠科股份有限公司 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116404011A (en) * | 2023-06-07 | 2023-07-07 | 惠科股份有限公司 | Display panel and display device |
| CN116404011B (en) * | 2023-06-07 | 2024-05-28 | 惠科股份有限公司 | Display panel and display device |
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