CN210575037U - Display panel and display device - Google Patents
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- CN210575037U CN210575037U CN201921296139.XU CN201921296139U CN210575037U CN 210575037 U CN210575037 U CN 210575037U CN 201921296139 U CN201921296139 U CN 201921296139U CN 210575037 U CN210575037 U CN 210575037U
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Abstract
The utility model provides a display panel and display device, the circuit structure through the luminous second pixel drive circuit of the second display pixel that will drive the luminous first pixel drive circuit in the first display pixel in drive display light transmission zone is different with the drive main display area, device quantity through reducing first pixel drive circuit, device size and wiring space occupy the area in function additional area with reducing first pixel drive circuit, thereby the area in display light transmission zone has been increased, the luminousness in display light transmission zone has been improved, and then the effect of shooing of camera under the screen has been promoted.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a display panel and display device.
Background
Due to the extremely high screen ratio, the full-screen brings brand-new visual experience and sensory impact to people, and becomes a competitive pursuit target of display panel manufacturers.
The conventional design of the screen camera is to dig holes in a camera area of a display panel, and a light-transmitting area of the camera does not display a picture, so that the panel penetration rate is high, but the user display experience is poor, and the full-screen effect cannot be realized; and another mode is that the last demonstration light transmission district that sets up of display panel to set up the camera under the screen in the position that the demonstration light transmission district of display panel corresponds, improved user experience, become the target that display panel producer pursued competitively, however, adopt this kind of mode, the luminousness in the demonstration light transmission district of display panel is lower, so that the photographic effect of camera is relatively poor under the screen.
In summary, it is desirable to provide a new display panel and a new display device to solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a display panel and display device, the luminousness of the demonstration light-permeable area of having solved current display panel is lower to as for the relatively poor technical problem of the effect of shooing of camera under the screen.
In order to solve the above problem, the utility model provides a technical scheme as follows:
an embodiment of the present invention provides a display panel, which includes a main display area and at least one function addition area, wherein the function addition area has at least one display transparent area, the display transparent area is provided with a plurality of first display pixels, a plurality of first pixel driving circuits are arranged in the function addition area and at the periphery corresponding to the display transparent area, and at least part of the first pixel driving circuits are used for driving the first display pixels to emit light;
a plurality of second display pixels and a plurality of second pixel driving circuits are arranged in the main display area, and the second pixel driving circuits drive the second display pixels to emit light;
the first pixel driving circuit and the second pixel driving circuit have different circuit structures, so that the area of the function additional area occupied by the first pixel driving circuit is smaller than the area of the main display area occupied by the second pixel driving circuit.
According to the utility model provides a display panel, first pixel drive circuit's device area is less than second pixel drive circuit's device area, and/or first pixel drive circuit's wiring space is less than second pixel drive circuit's wiring space.
According to the utility model provides a display panel, first pixel drive circuit's device quantity is less than second pixel drive circuit's device quantity.
According to the embodiment of the present invention, the device of the second pixel driving circuit includes seven thin film transistors, a storage capacitor, and a light emitting element;
the device of the first pixel driving circuit comprises two thin film transistors, a storage capacitor and a light emitting element, or the device of the first pixel driving circuit comprises four thin film transistors, a storage capacitor and a light emitting element, or the device of the first pixel driving circuit comprises six thin film transistors, a storage capacitor and a light emitting element.
According to the utility model provides a display panel, first pixel drive circuit's device size is less than second pixel drive circuit's device size.
According to the embodiment of the present invention, the device of the second pixel driving circuit includes seven thin film transistors, a storage capacitor, and a light emitting element; the device of the first pixel driving circuit includes seven thin film transistors, a storage capacitor, and a light emitting element.
According to the embodiment of the utility model provides a display panel show the periphery in printing opacity district and be in still be provided with many signals within the additional district of function and walk the line, many the signal is walked line and is a plurality of first pixel drive circuit electric connection, wherein, at least two first pixel drive circuit shares at least one the signal is walked the line, and follows at least one the line symmetry setting is walked to the signal.
According to the utility model provides a display panel, the signal is walked the line and is included power signal and walk line, at least two first pixel drive circuit sharing one power signal walks the line, and follows power signal walks the line symmetry setting.
According to the utility model provides a display panel, first display pixel includes first pixel positive pole it walks the line to show that light transmission zone is provided with at least one transparency, wherein, the transparency is walked line electric connection first pixel positive pole with first pixel drive circuit to make at least part first pixel drive circuit drives first display pixel is luminous.
The embodiment of the utility model provides a display device, display device includes above-mentioned display panel; and
and the photosensitive element is arranged on one side of the display panel and corresponds to the function additional area.
The utility model has the advantages that: the utility model provides a display panel and display device, circuit structure through the luminous second pixel drive circuit of the second display pixel that will drive the luminous first pixel drive circuit in the first display pixel in drive display light transmission zone is different with the drive main display area, device quantity through reducing first pixel drive circuit, device size and wiring space occupy the area in function additional area with reducing first pixel drive circuit, thereby the area in display light transmission zone has been increased, the luminousness in display light transmission zone has been improved, and then the effect of shooing of camera under the screen has been promoted.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic plan view of a function addition area according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structure diagram of another display panel according to an embodiment of the present invention;
fig. 5A is a schematic diagram of a 2T1C circuit structure adopted by a first pixel driving circuit according to an embodiment of the present invention;
fig. 5B is a schematic diagram of a 2T1C circuit wiring structure adopted by the first pixel driving circuit according to an embodiment of the present invention;
fig. 6A is a schematic diagram of a 4T1C circuit structure adopted by a first pixel driving circuit according to an embodiment of the present invention;
fig. 6B is a schematic diagram of a 4T1C circuit wiring structure adopted by the first pixel driving circuit according to an embodiment of the present invention;
fig. 7A is a schematic diagram of a 7T1C circuit structure adopted by a first pixel driving circuit according to an embodiment of the present invention;
fig. 7B is a schematic diagram of a 7T1C circuit wiring structure adopted by the first pixel driving circuit according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a pixel driving circuit island according to an embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], refer to the directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The utility model discloses to prior art's display panel and display device, the luminousness that shows the printing opacity district is lower to the relatively poor technical problem of the effect of shooing of camera under the screen, this defect can be solved to this embodiment.
As shown in fig. 1, a display panel 100 provided by the embodiment of the present invention is an active matrix organic light emitting diode display panel, where the display panel 100 includes a main display area 100a and at least one function addition area 100b, where the main display area 100a is an area mainly used for displaying images; the function additional area 100b is used for placing a photosensitive element, the function additional area 100b is provided with at least one display transparent area 100c, the display transparent area 100c is used for displaying an image, and meanwhile, light can penetrate through the display transparent area so that the photosensitive element which is positioned on one side of the display panel 100 and corresponds to the display transparent area 100c receives an optical signal, wherein the photosensitive element can be a camera, an optical touch component, a fingerprint identification sensor and the like, so that the display panel can realize functions such as a photographing function, an optical touch function, optical fingerprint identification and the like.
As shown in fig. 2, a plurality of the display transparent areas 100c may be disposed in the function addition area 100b, and the display transparent areas 100c may be circular, rectangular, rounded rectangular, or irregular polygonal; each of the display light-transmitting areas 100c has a size of 0.36mm2-100mm2In order to ensure that when the function addition area 100b of the display panel 100 is correspondingly provided with the camera, the camera can have a good photographing effect, and the process difficulty is reduced.
It should be noted that, for convenience of description, in the embodiment of the present invention, the display panel 100 has one of the function addition regions 100b, and the function addition region 100b has one of the display light-transmitting regions 100c for description.
Since the pixel driving circuit of the display panel 100 includes a plurality of metal films, such as a polysilicon layer, a control electrode layer, a source/drain metal layer, and the like, and the metal films have a light-shielding effect, the area of the display panel 100 where the pixel driving circuit is disposed has no light transmittance, and the plurality of metal films reflect, diffract, interfere with light, and the like, the pixel driving circuit is disposed at the periphery of the display light-transmitting area 100c, so that the display light-transmitting area 100c has good light transmittance due to the absence of the pixel driving circuit.
As shown in fig. 3, the display panel 100 includes a substrate 101, a first pixel driving circuit 102, a second pixel driving circuit 103, at least two insulating layers 104, a transparent trace 105, a plurality of first display pixels 106, a plurality of second display pixels 107, and a plurality of signal traces.
A plurality of first pixel driving circuits 102 are disposed on the substrate 101 corresponding to the periphery of the display transparent area 100c and located in the function addition area 100b, a plurality of first display pixels 106 are disposed on one side of the insulating layer 104 away from the substrate 101 and located in the display transparent area 100c, at least a portion of the first pixel driving circuits 102 drive the first display pixels 106 to emit light, and the first display pixels 106 include first pixel anodes 1061; the plurality of second display pixels 107 are disposed on a side of the insulating layer 104 away from the substrate 101 and located in the main display area 100a, a plurality of second pixel driving circuits 103 are further disposed on the substrate 101 corresponding to the main display area 100a to drive the plurality of second display pixels 107 to emit light, one second pixel driving circuit 103 is correspondingly disposed below each sub-pixel constituting the second display pixel 107, and the second display pixel 107 includes a second pixel anode 1071.
The display panel 100 further includes a pixel defining layer 108, wherein the pixel defining layer 108 covers the first pixel anode 1061, the second pixel anode 1071, and the insulating layer 104.
The function addition region 100b is provided with a plurality of transparent wires 105, the first display pixels 106 are electrically connected to the first pixel driving circuit 102 through the transparent wires 105, and the plurality of transparent wires 105 include at least two layers of transparent wires 105 located at different layers. In the embodiment of the present invention, the transparent trace 105 is three layers, the transparent trace 105 includes a first transparent trace 1051, a second transparent trace 1052 and a third transparent trace 1053, and the first transparent trace 1051, the second transparent trace 1052 and the third transparent trace 1053 are respectively located at different layers; specifically, the distance between every two adjacent transparent traces 105 disposed on the same layer is greater than 2um, so as to avoid short circuit between two adjacent transparent traces 105 on the same layer; the line width of the transparent wire 105 is greater than 1um, so as to avoid the open circuit of the transparent wire 105 due to the over-small line width.
In one embodiment, the first display pixel 106 is electrically connected to the first pixel driving circuit 102 through the transparent trace 105 at least partially located in the display transparent area 100a and partially located at the periphery of the display transparent area 100a and in the function addition area 100b, that is, the transparent trace 105 is mainly disposed in the display transparent area 100 c.
A plurality of in the first display pixel 106 part first display pixel 106 with can pass through one deck or two-layer or three-layer between the first pixel drive circuit 102 transparent line 105 electric connection of walking, the embodiment of the utility model provides a with divide first display pixel 106 with pass through the three-layer between the first pixel drive circuit 102 transparent line 105 electric connection of walking
With continued reference to fig. 3, the insulating layer 104 has four layers, specifically including a first insulating layer 1041, a second insulating layer 1042, a third insulating layer 1043, and a fourth insulating layer 1044; the first insulating layer 1041 covers the first pixel driving circuit 102 and the second pixel driving circuit 103, a first transparent wire 1051 is disposed on the first insulating layer 1041, at least a portion of the first transparent wire 1051 is located in the function addition region 100b, and another portion of the first transparent wire 1051 is located in the display transparent region 100 c; the second insulating layer 1042 covers the first insulating layer 1041 and the first transparent wire 1051, a second transparent wire 1052 is disposed on the second insulating layer 1041, and the second transparent wire 1052 is located in the display transmissive area 100 c; the third insulating layer 1043 covers the second insulating layer 1041 and the second transparent wire 1052, a third transparent wire 1053 is disposed on the third insulating layer 1043, and the third transparent wire 1053 is located in the display transmissive area 100 c; the fourth insulating layer 1044 covers the third insulating layer 1043 and the third transparent trace 1053; a plurality of the first pixel anodes 1061 disposed on the fourth insulating layer 1044 of the display light-transmissive region 100 c; a plurality of the second pixel anodes 1071 on the fourth insulating layer 1044 of the main display region 100 a; the first pixel anode 1061 and the first pixel driving circuit 102 are electrically connected sequentially through the third transparent trace 1053, the second transparent trace 1052 and the first transparent trace 1051, and two adjacent transparent traces are connected by a via hole on the insulating layer.
Further, orthographic projections of the first transparent wire 1051, the second transparent wire 1052 and the third transparent wire 1053 on the substrate 101 are at least partially overlapped, and such a stacked wiring manner is adopted, which is beneficial to increasing the number of the transparent wires 105, so as to increase the area of the display light-transmitting area 100c, thereby improving the light transmittance thereof.
In an embodiment, the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through at least a portion of the transparent trace 105 located in the main display area 100a and a portion of the transparent trace 105 located in the function addition area 100b, that is, the transparent trace 105 may also be disposed in the main display area 100a to electrically connect the first pixel driving circuit 102 and the first pixel anode 1061, so as to further increase a wiring space of the transparent trace 105, and avoid a short circuit problem caused by a narrow space between adjacent transparent traces 105 located on the same layer.
As shown in fig. 4, fig. 4 is different from fig. 3 in that a first transparent trace 1051 is disposed on the first insulating layer 1041, the first transparent trace 1051 is at least partially located in the function addition region 100b, and another portion extends from the function addition region 100b to the main display region 100 a; the second insulating layer 1042 covers the first insulating layer 1041 and the first transparent wire 1051, a second transparent wire 1052 is disposed on the second insulating layer 1042, and the second transparent wire 1052 is located in the main display area 100 a; the third insulating layer 1043 covers the second insulating layer 1042 and the second transparent wire 1052, and the third transparent wire 1052 extends from the main display area 100a to the display transmissive area 100c through the functional additional area 100 b; the fourth insulating layer 1044 covers the third insulating layer 1043 and the third transparent trace 1053; the first pixel anode 1061 and the first pixel driving circuit 102 are electrically connected to each other through the third transparent trace 1053, the second transparent trace 1052 and the first transparent trace 1051 in sequence.
It is understood that the first pixel anode 1061 of a portion of the first display pixel 106 close to the main display area 100a is connected to the first pixel driving circuit 102 through the transparent trace 105 at least partially located in the main display area 100a and partially located at the periphery of the display transparent area 100c and within the function addition area 100 b; the first pixel anode 1061 of the first display pixel 106 away from the main display area 100a is electrically connected to the first pixel driving circuit 102 through at least a portion of the display transparent area 100c and a portion of the transparent trace 105 located at the periphery of the display transparent area 100c and in the functional additional area 100b, so as to reduce the overall wiring space required by the transparent trace 105 and further increase the number of the transparent trace 105.
The substrate 101 in the function addition area 100b and located at the periphery of the display light-transmitting area 100c is further provided with a plurality of signal traces for transmitting signals for driving the first display pixels 106 to the first pixel anodes 1061. Since the signal wires also have a light shielding effect, the signal wires are disposed at the periphery of the display light-transmitting area 100c, so that the light transmittance of the display light-transmitting area 100c is further improved because the signal wires are not disposed therein.
Specifically, the signal traces may include a first signal trace and a second signal trace, where the first signal trace may include a scan line, a light emitting signal line for controlling the first display pixel 106 to emit light, and a reset line for controlling the first pixel anode 1061 to be reset; the second signal trace may include a data line for transmitting a data voltage for driving the first display pixel 106.
Specifically, the first pixel driving circuit 102, the signal trace and the first pixel anode 1061 occupy the area of the function additional area 100b is less than or equal to 50%, and is a plurality of the first pixel anode 1061 occupies the area of the display transparent area 100c is less than 50%, so as to ensure that the display transparent area 100c has a sufficient transparent area, in the embodiment of the present invention, the size of the display transparent area 100c is 600-10000 um.
Further, with reference to fig. 3 and 4, the display panel 100 further includes a conductive layer 109 disposed between the at least two insulating layers 104, the conductive layer 109 is located in the main display area 100a, and the second pixel anode 1071 of the second display pixel 107 is electrically connected to the second pixel driving circuit 103 through the conductive layer 109, so that the second pixel driving circuit 103 drives the second display pixel 107 to emit light, which can enhance the conductivity. It should be noted that the wiring manner and material of the conductive layer 109, the electrical connection manner between the second pixel anode 1071 and the second pixel driving circuit 103 may be the same as the transparent trace 105, and the conductive layer and the second pixel driving circuit are manufactured by the same process as the transparent trace 105, which is beneficial to saving process steps and reducing production cost.
Further, since the size of the area occupied by the first pixel driving circuit 102 and the signal trace in the function addition region 100b will affect the size of the display light-transmitting region 100c, specifically, the larger the area occupied by the first pixel driving circuit 102 and the signal trace in the function addition region 100b is, the larger the size of the display light-transmitting region 100c is; the smaller the area of the function addition region 100b occupied by the first pixel driving circuit 102 and the signal traces is, the larger the size of the display light-transmitting region 100c is. Therefore, the embodiment of the present invention adopts different circuit structures for the first pixel driving circuit 102 and the second pixel driving circuit 103, so that the area of the function addition region 100b occupied by the first pixel driving circuit 102 is smaller than the area of the main display region 100a occupied by the second pixel driving circuit 103, thereby increasing the size of the display light-transmitting region 100 c.
Since different circuit structures can be expressed in terms of device area, wiring structure, and the like, the circuit structure of the first pixel driving circuit 102 can be made different from that of the second pixel driving circuit 103 by adjusting the device area and the wiring structure, thereby leaving a necessary space for the light-transmitting display region 100 c. The embodiments of the present invention will be explained in the above two aspects.
In one embodiment, the device area of the first pixel driving circuit 102 is smaller than that of the second pixel driving circuit 103, wherein the device area is mainly determined by the number of devices and the device size, and the devices of the first pixel driving circuit 102 and the second pixel driving circuit 103 mainly refer to the thin film transistor devices and the storage capacitors constituting the first pixel driving circuit 102 and the second pixel driving circuit 103.
The number of devices of the first pixel driving circuit 102 is smaller than the number of devices of the second pixel driving circuit 103. In the embodiment of the present invention, the second pixel driving circuit 103 for driving the second display pixels 107 of the main display area 100a to emit light adopts a 7T1C circuit, and the 7T1C circuit includes seven thin film transistors and a storage capacitor; therefore, the first pixel driving circuit 102 for driving the first display pixel 106 of the display transparent region 100C to emit light may adopt any one of a 2T1C circuit, a 4T1C circuit and a 6T1C circuit; of course, in other embodiments, the second pixel driving circuit 103 may also adopt a 4T1C circuit or a 6T1C circuit, and specifically, when the second pixel driving circuit 103 adopts a 4T1C circuit, the first pixel driving circuit 102 may adopt a 2T1C circuit; when the second pixel driving circuit 103 adopts a 6T1C circuit, the first pixel driving circuit can adopt a 2T1C circuit or a 4T1C circuit, for clearly explaining the technical solution of the present invention, the embodiment of the present invention uses the second pixel driving circuit 103 adopts a 7T1C circuit as an example for illustration.
For example, as shown in fig. 5A, the first pixel driving circuit 102 employs a 2T1C circuit, the 2T1C circuit includes two thin film transistors including a driving transistor DTFT and a first switching transistor STFT1, and a storage capacitor, wherein a control electrode of the first switching transistor STFT1 is connected to a Scan line Scan, a first electrode of the first switching transistor STFT1 is connected to a first electrode of the driving transistor DTFT and an anode of the light emitting unit, and a second electrode of the first switching transistor STFT1 is connected to a control electrode of the driving transistor DTFT and a first end of the storage capacitor Cap; a second pole of the driving transistor DTFT is connected to a second end of the storage capacitor Cap and a data line; the second end of the storage capacitor Cap is connected with a first power supply signal routing Vdd; and the cathode of the light-emitting element is connected with a second power supply signal line Vss.
As shown in fig. 6A, the first pixel driving circuit 102 employs a 4T1C circuit, the 4T1C circuit includes four thin film transistors and a storage capacitor Cap, the four thin film transistors include a driving transistor DTFT and a first switching transistor STFT1, a second switching transistor STFT2 and a third switching transistor STFT3, wherein a control electrode of the first switching transistor STFT1 is connected to a Scan line Scan, a first electrode of the first switching transistor STFT1 is connected to a first electrode of the driving transistor DTFT and a second electrode of the third switching transistor STFT3, and a second electrode of the first switching transistor STFT1 is connected to the control electrode of the driving transistor DTFT and a first end of the storage capacitor Cap; a control electrode of the second switching transistor STFT2 is connected to a control electrode of the third switching transistor STFT3, a first electrode of the second switching transistor STFT2 is connected to a second electrode of the driving transistor DTFT and the data line data, and a second electrode of the second switching transistor STFT2 is connected to a second terminal of the storage capacitor Cap; a control electrode of the third switching transistor STFT3 is connected to a control signal line EM, and a second electrode of the third switching transistor STFT3 is connected to an anode of the light emitting element; the second pole of the driving transistor DTFT is connected with a Data line Data; the second end of the storage capacitor Cap is connected with a first power supply signal routing Vdd; and the cathode of the light-emitting unit is connected with a second power supply signal wiring Vss.
The device size of the first pixel driving circuit 102 is smaller than the device size of the second pixel driving circuit 103, and the size of the thin film transistor and the storage capacitor Cap adopted by the first pixel driving circuit 102 is smaller than the size of the thin film transistor and the storage capacitor Cap adopted by the second pixel driving circuit 103, so that the device area of the first pixel driving circuit 102 is further reduced compared with the device area of the second pixel driving circuit 103.
In this case, for example, the first pixel driving circuit 102 and the second pixel driving circuit 103 may each adopt a 7T1C circuit, as shown in fig. 7A, the first pixel driving circuit 102 includes seven thin film transistors including a driving transistor DTFT and a first switching transistor STFT1, a second switching transistor STFT2, a third switching transistor STFT3, a fourth switching transistor STFT4, a fifth switching transistor STFT5, and a sixth switching transistor STFT6, and a storage capacitor Cap, wherein a control electrode of the first switching transistor STFT1 is connected to a first Scan line Scan [ n-1], a first electrode of the first switching transistor STFT1 is connected to a first electrode of the sixth switching transistor STFT6 and a reset signal line Vi, a second pole of the first switching transistor STFT1 is connected to the control pole of the driving transistor DTFT and the first end of the storage capacitor Cap; a control electrode of the second switching transistor STFT2 is connected to a control electrode of the third switching transistor STFT3 and a second Scan line Scan [ n ], a first electrode of the second switching transistor STFT2 is connected to a first electrode of the driving transistor DTFT and a second electrode of the fourth switching transistor STFT4, and a second electrode of the second switching transistor STFT2 is connected to a control electrode of the driving transistor DTFT and a first terminal of the storage capacitor Cap; a control electrode of the third switching transistor STFT3 is connected to a control electrode of the second switching transistor STFT2, a first electrode of the third switching transistor STFT3 is connected to a second electrode of the driving transistor DTFT, and a second electrode of the third switching transistor STFT3 is connected to the Data line Data; a control electrode of the fourth switching transistor STFT4 is connected to a control electrode of the fifth switching transistor STFT5 and a control signal line EM [ n ], and a first electrode of the fourth switching transistor STFT4 is connected to an anode of a light emitting element; a first pole of the fifth switching transistor STFT5 is connected to a second pole of the third switching transistor STFT3 and a second pole of the driving transistor DTFT, and a second pole of the fifth switching transistor STFT5 is connected to a second terminal of the storage capacitor Cap. A control electrode of the sixth switching transistor STFT6 is connected to the second Scan line Scan [ n ], a first electrode of the sixth switching transistor STFT6 is connected to the anode of the light emitting element, and a second electrode of the sixth switching transistor STFT6 is connected to the reset signal line Vi and the second electrode of the first switching transistor STFT 1. The second end of the storage capacitor Cap is connected with a first power supply signal routing Vdd; and the cathode of the light-emitting unit is connected with a second power supply signal wiring Vss.
The light emitting device is an active matrix organic light emitting diode.
In an embodiment, the wiring space of the first pixel driving circuit 102 is smaller than the wiring space of the second pixel driving circuit 103, and the signal traces and the device in the first pixel driving circuit 102 can be compressed and the positional relationship between the signal traces and the device can be changed, so that the structure of the first pixel driving circuit 102 is more compact, and a necessary space is left for the display light-transmitting area 100 c.
Further, at least two of the first pixel driving circuits 102 share at least one signal trace, where the signal trace may include a Scan line Scan, a Data line Data, a control signal line EM, a reset signal line Vi, a first power signal trace Vdd, a second power signal trace Vss, and the like.
In the embodiment of the present invention, at least two the first pixel driving circuit 102 shares one the first power signal is routed Vdd, at least two the first pixel driving circuit 102 respectively set up in the first power signal is routed Vdd's left and right sides and is kept symmetrical, thereby further reducing the wiring space of the first pixel driving circuit 102, increasing the size of the display light-transmitting area 100 c.
Specifically, as shown in fig. 5B, which is a wiring structure diagram of a 2T1C circuit structure adopted by the first pixel driving circuits 102, two of the first pixel driving circuits 102 share one first power signal trace Vdd, and the driving transistors DTFT, the first switching transistor STFT1, the storage capacitors Cap, the light emitting elements, and the Data lines Data of the two first pixel driving circuits 102 are respectively disposed at the left and right sides of the first power signal trace Vdd and respectively keep symmetrical arrangement.
As shown in fig. 6B, which is a wiring structure diagram of the 4T1C circuit structure adopted by the first pixel driving circuit 102, two of the first pixel driving circuits 102 share one first power signal trace Vdd, and the driving transistor DTFT, the first switching transistor STFT1, the second switching transistor STFT2, the third switching transistor STFT3, the storage capacitor Cap, the light emitting element, and the Data line Data of the two first pixel driving circuits 102 are respectively disposed at the left and right sides of the first power signal trace Vdd and respectively keep symmetrical arrangement.
As shown in fig. 7B, a wiring structure diagram of a 7T1C circuit structure adopted by the first pixel driving circuit 102 is shown, two of the first pixel driving circuits 102 share one first power signal trace Vdd, and the driving transistors DTFT, the first switching transistor STFT1, the second switching transistor STFT2, the third switching transistor STFT3, the fourth switching transistor STFT4, the fifth switching transistor STFT5, the sixth switching transistor STFT6, the storage capacitors Cap, the light emitting elements, and the Data lines Data of the two first pixel driving circuits 102 are respectively disposed on the left and right sides of the first power signal trace Vdd and respectively maintain a symmetrical arrangement.
It should be noted that the transistors employed in the embodiments of the present invention may be thin film transistors or field effect transistors or other devices with the same characteristics, and since the source and the drain of the thin film transistor employed herein are symmetrical, there is no difference between the source and the drain. In order to distinguish two electrodes of the thin film transistor except for the control electrode, i.e., the gate electrode, one of the electrodes is referred to as a source electrode, and the other electrode is referred to as a drain electrode. In addition, the thin film transistors can be divided into N-type thin film transistors or P-type thin film transistors according to the characteristics of the thin film transistors, and the types of components in the pixel circuit can be flexibly selected according to the situation in application. In the embodiment of the present invention, the thin film transistors may be P-type transistors; alternatively, the thin film transistors may be all N-type transistors; or, a part of the thin film transistors are N-type thin film transistors, and a part of the thin film transistors are P-type thin film transistors, it is easily understood that when an N-type thin film transistor is used, the first pole thereof may be a source electrode, and the second pole thereof may be a drain electrode, and when a P-type thin film transistor is used, the first pole thereof may be a drain electrode, and the second pole thereof may be a source electrode.
Further, as shown in fig. 8, a plurality of the first pixel driving circuits 102 may be grouped together to form a pixel driving circuit island 10, each of the pixel driving circuit islands 10 includes a plurality of the first pixel driving circuits 102, and it is understood that each of the pixel driving circuit islands 10 is formed by grouping a plurality of the first pixel driving circuits 102 together in an island shape, and the grouping together is relatively dispersed with respect to the pixel driving circuits, which may further increase the size of the display light-transmitting area 100 c.
Specifically, each of the pixel driving circuit islands 102 includes m × n first pixel driving circuits 102 arranged in an array, where m denotes a row number of the first pixel driving circuits 102, n denotes a column number of the first pixel driving circuits 102, m and n are positive integers, and at least one of m and n is greater than 1. The value range of m is greater than or equal to 3 and less than 128, and the value range of n is greater than or equal to 1 and less than 128. Further, m is greater than or equal to 3 and less than 64, and n is greater than or equal to 1 and less than 64.
An embodiment of the utility model provides a display device is still provided, display device includes above-mentioned display panel 100 and photosensitive element, photosensitive element set up in one side of display panel 100 just corresponds the additional district 100b of function sets up, wherein, photosensitive element can be camera and optics touch-control subassembly.
The beneficial effects are that: the embodiment of the utility model provides a display panel and display device, circuit structure through the luminous second pixel drive circuit of the luminous first pixel drive circuit of the first display pixel in the transmission area of will driving display is different with the luminous second pixel drive circuit of the second display pixel in the main display area of drive, device quantity through reducing first pixel drive circuit, device size and wiring space occupy the area in function additional area with reducing first pixel drive circuit, thereby the size in demonstration transmission area has been increased, the luminousness in demonstration transmission area has been improved, and then the effect of shooing of camera under the screen has been promoted.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. A display panel is characterized in that the display panel comprises a main display area and at least one function additional area, the function additional area is provided with at least one display light-transmitting area, the display light-transmitting area is provided with a plurality of first display pixels, a plurality of first pixel driving circuits are arranged in the function additional area and corresponding to the periphery of the display light-transmitting area, and at least part of the first pixel driving circuits are used for driving the first display pixels to emit light;
a plurality of second display pixels and a plurality of second pixel driving circuits are arranged in the main display area, and the second pixel driving circuits drive the second display pixels to emit light;
the first pixel driving circuit and the second pixel driving circuit have different circuit structures, so that the area of the function additional area occupied by the first pixel driving circuit is smaller than the area of the main display area occupied by the second pixel driving circuit.
2. The display panel according to claim 1, wherein a device area of the first pixel driver circuit is smaller than a device area of the second pixel driver circuit, and/or a wiring space of the first pixel driver circuit is smaller than a wiring space of the second pixel driver circuit.
3. The display panel according to claim 2, wherein the number of devices of the first pixel driving circuit is smaller than the number of devices of the second pixel driving circuit.
4. The display panel according to claim 3, wherein the devices of the second pixel driving circuit include seven thin film transistors, a storage capacitor, and a light emitting element;
the device of the first pixel driving circuit comprises two thin film transistors, a storage capacitor and a light emitting element, or the device of the first pixel driving circuit comprises four thin film transistors, a storage capacitor and a light emitting element, or the device of the first pixel driving circuit comprises six thin film transistors, a storage capacitor and a light emitting element.
5. The display panel according to claim 2, wherein a device size of the first pixel drive circuit is smaller than a device size of the second pixel drive circuit.
6. The display panel according to claim 5, wherein the devices of the second pixel driving circuit include seven thin film transistors, a storage capacitor, and a light emitting element; the device of the first pixel driving circuit includes seven thin film transistors, a storage capacitor, and a light emitting element.
7. The display panel according to claim 2, wherein a plurality of signal traces are further disposed at the periphery of the display light-transmissive region and within the function addition region, and the plurality of signal traces are electrically connected to the plurality of first pixel driving circuits, wherein at least two of the first pixel driving circuits share at least one of the signal traces and are symmetrically disposed along at least one of the signal traces.
8. The display panel according to claim 7, wherein the signal traces comprise power signal traces, and at least two of the first pixel driving circuits share one of the power signal traces and are symmetrically disposed along the power signal trace.
9. The display panel according to claim 1, wherein the first display pixel comprises a first pixel anode, and at least one transparent trace is disposed in the display transparent region, wherein the transparent trace electrically connects the first pixel anode and the first pixel driving circuit, so that at least a portion of the first pixel driving circuit drives the first display pixel to emit light.
10. A display device characterized in that it comprises the display panel of any one of claims 1 to 9; and
and the photosensitive element is arranged on one side of the display panel and corresponds to the function additional area.
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|---|---|---|---|
| CN201921296139.XU CN210575037U (en) | 2019-08-09 | 2019-08-09 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921296139.XU CN210575037U (en) | 2019-08-09 | 2019-08-09 | Display panel and display device |
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| CN210575037U true CN210575037U (en) | 2020-05-19 |
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| CN110459175A (en) * | 2019-08-09 | 2019-11-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| CN110459175A (en) * | 2019-08-09 | 2019-11-15 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| WO2021254049A1 (en) * | 2020-06-18 | 2021-12-23 | 京东方科技集团股份有限公司 | Display substrate and display apparatus |
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| CN114519974A (en) * | 2020-11-17 | 2022-05-20 | 乐金显示有限公司 | Display device |
| WO2022147649A1 (en) * | 2021-01-05 | 2022-07-14 | 京东方科技集团股份有限公司 | Display panel and preparation method therefor, and display device |
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| CN115298829B (en) * | 2021-01-05 | 2023-12-08 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
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