WO2021027109A1 - 显示面板及显示装置 - Google Patents
显示面板及显示装置 Download PDFInfo
- Publication number
- WO2021027109A1 WO2021027109A1 PCT/CN2019/116124 CN2019116124W WO2021027109A1 WO 2021027109 A1 WO2021027109 A1 WO 2021027109A1 CN 2019116124 W CN2019116124 W CN 2019116124W WO 2021027109 A1 WO2021027109 A1 WO 2021027109A1
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- WIPO (PCT)
- Prior art keywords
- display
- pixel
- area
- pixel driving
- driving circuit
- Prior art date
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Definitions
- the present invention relates to the field of display technology, in particular to a display panel and a display device.
- the commonly used design of the under-screen camera is to dig holes in the display panel camera area, and the light-transmitting area of the camera does not display the picture. In this way, the panel penetration rate will be relatively high, but the user display experience is not good, and the full-screen effect cannot be presented;
- Another way is to set the display light-transmitting area on the display panel, and set the under-screen camera at the position corresponding to the display light-transmitting area of the display panel, which improves the user experience and becomes the goal pursued by display panel manufacturers.
- this In this way, the light transmittance of the display light-transmitting area of the display panel is low, so that the camera under the screen has a poor photographing effect.
- the present invention provides a display panel and a display device, which solves the technical problem that the light transmittance of the display light-transmitting area of the existing display panel is low, so that the photographing effect of the under-screen camera is poor.
- An embodiment of the present invention provides a display panel.
- the display panel includes a main display area and at least one additional function area.
- the additional function area has at least one display light-transmitting area, and the display light-transmitting area has a size of 600 ⁇ 10000um, the display light-transmitting area is provided with a plurality of first display pixels, and a plurality of first pixel driving circuits are provided in the function additional area and corresponding to the periphery of the display light-transmitting area, at least part of the first pixel driving circuit A pixel driving circuit for driving the first display pixel to emit light;
- a plurality of second display pixels and a plurality of second pixel drive circuits are provided in the main display area, and the second pixel drive circuit drives the second display pixels to emit light;
- the circuit structure of the first pixel driving circuit and the second pixel driving circuit are different, so that the area occupied by the first pixel driving circuit of the additional function area is smaller than that of the second pixel driving circuit.
- the area of the main display area is different.
- the device area of the first pixel drive circuit is smaller than the device area of the second pixel drive circuit, and/or the wiring space of the first pixel drive circuit is smaller than that of the second pixel drive circuit. Pixel drive circuit wiring space.
- the number of components of the first pixel driving circuit is smaller than the number of components of the second pixel driving circuit.
- 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 drive circuit includes two thin film transistors, a storage capacitor, and a light-emitting element, or the device of the first pixel drive circuit includes four thin film transistors, a storage capacitor, and a light-emitting element, or the first pixel drive
- the circuit components include six thin film transistors, storage capacitors, and light-emitting elements.
- the device size of the first pixel driving circuit is smaller than the device size of the second pixel driving circuit.
- the device of the second pixel driving circuit includes seven thin film transistors, storage capacitors and light emitting elements; the device of the first pixel driving circuit includes seven thin film transistors, storage capacitors and light emitting elements. element.
- a plurality of signal wiring lines are further provided on the periphery of the display light-transmitting area and within the function additional area, and the plurality of signal wiring lines and the plurality of first A pixel driving circuit is electrically connected, wherein at least two of the first pixel driving circuits share at least one of the signal traces and are arranged symmetrically along at least one of the signal traces.
- the signal traces include power signal traces, and at least two of the first pixel driving circuits share one power signal trace and are arranged symmetrically along the power signal traces .
- An embodiment of the present invention provides a display panel.
- the display panel includes a main display area and at least one additional function area.
- the additional function area has at least one display light-transmitting area, and the display light-transmitting area is provided with a plurality of second display areas.
- a display pixel, 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, at least part of the first pixel driving circuit is used to drive the first display pixels Glow
- a plurality of second display pixels and a plurality of second pixel drive circuits are provided in the main display area, and the second pixel drive circuit drives the second display pixels to emit light;
- the circuit structure of the first pixel driving circuit and the second pixel driving circuit are different, so that the area occupied by the first pixel driving circuit of the additional function area is smaller than that of the second pixel driving circuit.
- the area of the main display area is different.
- the device area of the first pixel drive circuit is smaller than the device area of the second pixel drive circuit, and/or the wiring space of the first pixel drive circuit is smaller than that of the second pixel drive circuit. Pixel drive circuit wiring space.
- the number of components of the first pixel driving circuit is smaller than the number of components of the second pixel driving circuit.
- 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 drive circuit includes two thin film transistors, a storage capacitor, and a light-emitting element, or the device of the first pixel drive circuit includes four thin film transistors, a storage capacitor, and a light-emitting element, or the first pixel drive
- the circuit components include six thin film transistors, storage capacitors, and light-emitting elements.
- the device size of the first pixel driving circuit is smaller than the device size of the second pixel driving circuit.
- the device of the second pixel driving circuit includes seven thin film transistors, storage capacitors and light emitting elements; the device of the first pixel driving circuit includes seven thin film transistors, storage capacitors and light emitting elements. element.
- a plurality of signal wiring lines are further provided on the periphery of the display light-transmitting area and within the function additional area, and the plurality of signal wiring lines and the plurality of first A pixel driving circuit is electrically connected, wherein at least two of the first pixel driving circuits share at least one of the signal traces and are arranged symmetrically along at least one of the signal traces.
- the signal traces include power signal traces, and at least two of the first pixel driving circuits share one power signal trace and are arranged symmetrically along the power signal traces .
- the first display pixel includes a first pixel anode, and at least one transparent wiring is provided in the display light-transmitting area, wherein the transparent wiring is electrically connected to the second A pixel anode and the first pixel driving circuit, so that at least part of the first pixel driving circuit drives the first display pixel to emit light.
- the first pixel anode passes through the transparent path at least partly located in the display light-transmitting area and partly located at the periphery of the display light-transmitting area and in the function additional area.
- the line is electrically connected to the first pixel driving circuit.
- the first pixel anode passes through the transparent wiring at least partly located in the main display area and partly located at the periphery of the display light-transmitting area and in the function additional area It is electrically connected to the first pixel driving circuit.
- An embodiment of the present invention provides a display device, which includes the above-mentioned display panel;
- the photosensitive element, the photosensitive element is arranged on one side of the display panel and corresponding to the function additional area.
- the display panel and the display device provided by the present invention combine the circuit structure of the first pixel driving circuit for driving the first display pixel in the light-transmitting area to emit light and the second display pixel driving the main display area to emit light.
- the circuit structure of the second pixel driving circuit is different.
- FIG. 1 is a schematic diagram of a planar structure of a display panel provided by an embodiment of the present invention
- FIG. 2 is a schematic diagram of a plan structure of a function additional area provided by an embodiment of the present invention.
- FIG. 3 is a schematic diagram of a cross-sectional structure of a display panel provided by an embodiment of the present invention.
- FIG. 4 is a schematic cross-sectional structure diagram of another display panel provided by an embodiment of the present invention.
- 5A is a schematic diagram of a 2T1C circuit structure adopted by the first pixel driving circuit provided by an embodiment of the present invention
- 5B is a schematic diagram of the 2T1C circuit wiring structure adopted by the first pixel driving circuit according to an embodiment of the present invention
- 6A is a schematic diagram of the 4T1C circuit structure adopted by the first pixel driving circuit provided by an embodiment of the present invention
- 6B is a schematic diagram of the 4T1C circuit wiring structure adopted by the first pixel driving circuit provided by the embodiment of the present invention.
- FIG. 7A is a schematic diagram of the 7T1C circuit structure adopted by the first pixel driving circuit according to an embodiment of the present invention.
- 7B is a schematic diagram of the wiring structure of the 7T1C circuit adopted by the first pixel driving circuit provided by the embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a pixel driving circuit island provided by an embodiment of the present invention.
- the present invention addresses the technical problem that the display panel and the display device of the prior art have low light transmittance in the display light-transmitting area, so that the under-screen camera has a poor photographing effect.
- This embodiment can solve the problem.
- a display panel 100 provided by an embodiment of the present invention is an active matrix organic light emitting diode display panel.
- the display panel 100 includes a main display area 100a and at least one additional function area 100b, wherein the main display area 100a is an area mainly used to display images; the function additional area 100b is used to place photosensitive elements, the function additional area 100b has at least one display light transmission area 100c, and the display light transmission area 100c is used for displaying images
- light can be transmitted so that the photosensitive element located on one side of the display panel 100 and corresponding to the display light-transmitting area 100c receives the light signal, wherein the photosensitive element may be a camera, an optical touch Components and fingerprint recognition sensors, so that the display panel can realize functions such as camera function, optical touch function, and optical fingerprint recognition.
- a plurality of the display light-transmitting areas 100c may be provided in the function additional area 100b, and the display light-transmitting areas 100c may be circular, rectangular, rounded rectangle or irregular polygon;
- the size of the display light-transmitting area 100c is 0.36mm2-100mm2 to ensure that when the function additional area 100b of the display panel 100 is correspondingly provided with a camera, the camera can have a good photographing effect and reduce the process difficulty.
- the display panel 100 has one function addition area 100b, and the function addition area 100b has one display light-transmitting area 100c.
- the pixel driving circuit of the display panel 100 includes a plurality of metal film layers, such as a polysilicon layer, a gate electrode layer, and a source and drain metal layer, etc., and the metal film layer has a light-shielding effect
- the display panel 100 is provided with the pixel driver correspondingly
- the area of the circuit is not light-transmissive, and multiple metal film layers reflect light, diffraction, and interference. Therefore, the pixel driving circuit is arranged on the periphery of the display light-transmitting area 100c, so that the display light-transmitting area 100c Since there is no pixel drive circuit inside, it has good light transmittance.
- 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 wiring 105, a plurality of first display pixels 106, and a plurality of The second display pixel 107 and a plurality of signal wires.
- a plurality of the first pixel driving circuits 102 are provided on the substrate 101 corresponding to the periphery of the display light-transmitting area 100c and located in the function addition area 100b, and a plurality of first display pixels 106 are provided on the The insulating layer 104 is far from the substrate 101 and is located in the display light-transmitting area 100c. At least part of the first pixel driving circuit 102 drives the first display pixels 106 to emit light.
- the first display pixels 106 include The first pixel anode 1061; a plurality of second display pixels 107 are arranged on the side of the insulating layer 104 away from the substrate 101, and are located in the main display area 100a, in the main display area 100a corresponding to the A plurality of second pixel driving circuits 103 are also provided on the substrate 101 to drive a plurality of the second display pixels 107 to emit light, and each of the sub-pixels constituting the second display pixel 107 is provided with a corresponding second pixel
- the driving circuit 103, the second display pixel 107 includes a second pixel anode 1071.
- the display panel 100 further includes a pixel definition layer 108 covering the first pixel anode 1061, the second pixel anode 1071, and the insulating layer 104.
- the function additional area 100b is provided with a plurality of transparent wiring lines 105, the first display pixel 106 is electrically connected to the first pixel driving circuit 102 through the transparent wiring lines 105, and the plurality of transparent wiring lines 105 It includes at least two layers of the transparent wiring 105 located in different layers. In the embodiment of the present invention, the transparent wiring 105 has three layers.
- the transparent wiring 105 includes a first transparent wiring 1051, a second transparent wiring 1052, and a third transparent wiring 1053.
- the first transparent wiring 105 The traces 1051, the second transparent traces 1052, and the third transparent traces 1053 are located in different layers; specifically, the distance between every two adjacent transparent traces 105 disposed on the same layer is greater than 2um to avoid a short circuit between two adjacent transparent traces 105 on the same layer; the line width of the transparent trace 105 is greater than 1 um to prevent the transparent trace 105 from breaking due to too small line width.
- the first display pixel 106 passes through the transparent wiring 105 at least partly located in the display light-transmitting area 100a, and partly located at the periphery of the display light-transmitting area 100a and in the function additional area 100b. It is electrically connected to the first pixel driving circuit 102, that is, the transparent wiring 105 is mainly provided in the display light-transmitting area 100c.
- Some of the plurality of first display pixels 106 may be electrically connected to the first pixel driving circuit 102 through one, two or three layers of the transparent wiring 105, In the embodiment of the present invention, the first display pixel 106 and the first pixel driving circuit 102 are electrically connected through three layers of the transparent wiring 105
- 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; wherein, the first insulating layer 1041 covers In the first pixel driving circuit 102 and the second pixel driving circuit 103, a first transparent wiring 1051 is provided on the first insulating layer 1041, and the first transparent wiring 1051 is at least partially located in the function The additional area 100b, another part is located in the display light-transmitting area 100c; the second insulating layer 1042 covers the first insulating layer 1041 and the first transparent wiring 1051, and is disposed on the second insulating layer 1041 There is a second transparent wiring 1052, the second transparent wiring 1052 is located in the display light transmission area 100c; the third insulating layer 1043 covers the second insulating layer 1041 and the second transparent wiring 1052, A third transparent wiring 1053 is provided on the third insulating layer 1043, and the third transparent wiring
- the orthographic projections of the first transparent wiring 1051, the second transparent wiring 1052, and the third transparent wiring 1053 on the substrate 101 are at least partially overlapped, and this laminated wiring method is adopted , It is beneficial to increase the number of the transparent wiring 105, thereby increasing the area of the display light-transmitting area 100c, so as to improve its light transmittance.
- the first pixel anode 1061 is electrically connected to the first pixel driving circuit 102 through the transparent wiring 105 that is at least partially located in the main display area 100a and partially located in the function additional area 100b.
- the transparent wiring 105 can also be provided in the main display area 100a at the same time to electrically connect the first pixel driving circuit 102 and the first pixel anode 1061, which can further increase
- the wiring space of the transparent wiring 105 avoids the problem of short circuit due to the narrow spacing between the adjacent transparent wirings 105 on the same layer.
- a first transparent wiring 1051 is provided on the first insulating layer 1041, and the first transparent wiring 1051 is at least partially located in the function additional area 100b.
- Another part extends from the function additional area 100b to the main display area 100a;
- the second insulating layer 1042 covers the first insulating layer 1041 and the first transparent wiring 1051,
- the layer 1042 is provided with a second transparent wiring 1052, the second transparent wiring 1052 is located in the main display area 100a;
- the third insulating layer 1043 covers the second insulating layer 1042 and the second transparent wiring Line 1052, the third transparent wiring 1052 extends from the main display area 100a through the function additional area 100b to the display light-transmitting area 100c;
- the fourth insulating layer 1044 covers the third insulating layer 1043 And the third transparent wiring 1053;
- the first pixel anode 1061 and the first pixel driving circuit 102 pass through the third transparent wiring 1053, the second transparent wiring 1052, and the
- first pixel anode 1061 of the first display pixel 106 close to the main display area 100a passes at least partly in the main display area 100a and partly in the display light-transmitting area 100c.
- the transparent wiring 105 on the periphery and in the function additional area 100b is connected to the first pixel driving circuit 102; the first pixel of the first display pixel 106 that is far away from the main display area 100a
- the anode 1061 is electrically connected to the first pixel driving circuit 102 through the transparent wiring 105 that is at least partially located in the display light-transmitting area 100c, and partially located outside the display light-transmitting area 100c and in the function additional area 100b. Connection to reduce the overall wiring space required by the transparent wiring 105 and further increase the number of the transparent wiring 105.
- a plurality of the signal traces are also provided on the substrate 101 within the function additional area 100b and at the periphery of the display light-transmitting area 100c for transmitting signals for driving the first display pixels 106 To the first pixel anode 1061. Since the signal wiring also has a light-shielding effect, the signal wiring is arranged on the periphery of the display light-transmitting area 100c, so that the display light-transmitting area 100c is further improved because the signal wiring is not provided. Its light transmittance.
- the signal wiring may include a first signal wiring and a second signal wiring, where the first signal wiring may include a scan line, a light-emitting signal line that controls the first display pixel 106 to emit light, A reset line for controlling the reset of the first pixel anode 1061; the second signal trace may include a data line for transmitting a data voltage for driving the first display pixel 106.
- the area of the first pixel driving circuit 102, the signal wiring, and the first pixel anode 1061 occupying the function additional area 100b is less than or equal to 50%, and the plurality of first pixel anodes 1061 occupy
- the area of the display light-transmitting area 100c is less than 50% to ensure that the display light-transmitting area 100c has a sufficient light-transmitting area.
- the size of the display light-transmitting area 100c is 600 ⁇ 10000um.
- 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 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 , Can enhance conductivity.
- the wiring mode and material of the conductive layer 109, the electrical connection mode of the second pixel anode 1071 and the second pixel driving circuit 103 may be the same as the transparent wiring 105, and may be the same as the transparent wiring 105.
- the transparent wiring 105 is made by the same manufacturing process, which is beneficial to save process steps and reduce production costs. For details, please refer to the above-mentioned embodiments, which will not be repeated here.
- the size of the area occupied by the function additional area 100b by the first pixel driving circuit 102 and the signal wiring will affect the size of the display light-transmitting area 100c.
- the first pixel The larger the area occupied by the driving circuit 102 and the signal wiring of the function additional area 100b, the larger the size of the display light-transmitting area 100c; the first pixel driving circuit 102 and the signal wiring occupy more of the function additional area 100b The smaller the area, the larger the size of the display light-transmitting area 100c. Therefore, in the embodiment of the present invention, the first pixel driving circuit 102 and the second pixel driving circuit 103 adopt different circuit structures, so that the first pixel driving circuit 102 occupies the area of the function additional area 100b. It is smaller than the area occupied by the second pixel driving circuit 103 of the main display area 100a, thereby increasing the size of the display light-transmitting area 100c.
- circuit structures can be expressed in terms of device area and wiring structure. Therefore, the device area and wiring structure of the first pixel drive circuit 102 can be adjusted to make the circuit structure of the second pixel drive circuit 103 similar. The circuit structure is different, thereby leaving necessary space for the light-transmitting display area 100c.
- the embodiments of the present invention will be explained from the above two aspects.
- the device area of the first pixel drive circuit 102 is smaller than the device area of the second pixel drive circuit 103, where the device area is mainly determined by the number of devices and the device size, and the first pixel
- the devices of the driving circuit 102 and the second pixel driving circuit 103 mainly refer to the thin film transistor devices and storage capacitors that make up 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.
- the second pixel driving circuit 103 for driving the second display pixel 107 of the main display area 100a to emit light adopts a 7T1C circuit
- the 7T1C circuit includes seven thin film transistors and one memory. Therefore, the first pixel driving circuit 102 for driving the first display pixel 106 of the display light-transmitting area 100c to emit light can adopt any one of 2T1C circuit, 4T1C circuit, and 6T1C circuit; of course In other embodiments, the second pixel driving circuit 103 may also adopt a 4T1C circuit or a 6T1C circuit.
- the first pixel driving circuit 102 may A 2T1C circuit is adopted; when the second pixel driving circuit 103 adopts a 6T1C circuit, the first pixel driving circuit may adopt a 2T1C circuit or a 4T1C circuit.
- the embodiment of the present invention uses the The second pixel driving circuit 103 uses a 7T1C circuit as an example for explanation.
- the first pixel driving circuit 102 adopts a 2T1C circuit.
- the 2T1C circuit includes two thin film transistors and a storage capacitor.
- the two thin film transistors include a driving transistor DTFT and a first switching transistor STFT1.
- the control electrode of the first switching transistor STFT1 is connected to the scan line Scan, the first electrode of the first switching transistor STFT1 is connected to the first electrode of the driving transistor DTFT and the anode of the light emitting unit, and the first switching transistor STFT1
- the second electrode of the driving transistor DTFT is connected to the control electrode of the driving transistor DTFT and the first end of the storage capacitor Cap; the second electrode of the driving transistor DTFT is connected to the second end of the storage capacitor Cap and the data line;
- the second end of the capacitor Cap is connected to the first power signal trace Vdd; the cathode of the light-emitting element is connected to the second power signal trace Vss.
- the first pixel driving circuit 102 adopts 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.
- the second switching transistor STFT2 and the third switching transistor STFT3 wherein the control electrode of the first switching transistor STFT1 is connected to the scan line Scan, and the first electrode of the first switching transistor STFT1 is connected to the first electrode of the driving transistor DTFT.
- the second electrode of the third switching transistor STFT3 and the second electrode of the first switching transistor STFT1 are connected to the control electrode of the driving transistor DTFT and the first end of the storage capacitor Cap; the second switch The control electrode of the transistor STFT2 is connected to the control electrode of the third switching transistor STFT3, the first electrode of the second switching transistor STFT2 is connected to the second electrode of the driving transistor DTFT and the data line data, and the second switching transistor STFT2
- the second electrode of the third switch transistor STFT3 is connected to the control signal line EM, and the second electrode of the third switch transistor STFT3 is connected to the anode of the light-emitting element;
- the second terminal of the driving transistor DTFT is connected to the data line Data; the second terminal of the storage capacitor Cap is connected to the first power signal line Vdd; the cathode of the light-emitting unit is connected to the second power signal line Vss.
- the device size of the first pixel drive circuit 102 is smaller than the device size of the second pixel drive circuit 103, and the size of the thin film transistor and the storage capacitor Cap adopted by the first pixel drive circuit 102 is smaller than that of the second pixel drive circuit
- the size of the thin film transistor and the storage capacitor Cap used in 103 are such that the device area of the first pixel driving circuit 102 is further reduced compared to the device area of the second pixel driving circuit 103.
- the circuit structure adopted by the first pixel drive circuit 102 may be the same as the circuit structure adopted by the second pixel drive circuit 103, for example, the first pixel drive circuit 102 and
- the second pixel driving circuit 103 adopts a 7T1C circuit.
- the first pixel driving circuit 102 includes seven thin film transistors and a storage capacitor Cap.
- the seven thin film transistors include a driving transistor DTFT and a first switch.
- the control electrode of the sixth switching transistor STFT6 is connected to the second scan line Scan[n]
- the first electrode of the sixth switching transistor STFT6 is connected to the anode of the light-emitting element
- the second electrode of the sixth switching transistor STFT6 is The reset signal line Vi and the second pole of the first switching transistor STFT1 are connected.
- the second end of the storage capacitor Cap is connected to the first power signal trace Vdd; the cathode of the light-emitting unit is connected to the second power signal trace Vss.
- the light-emitting element is an active matrix organic light-emitting diode.
- 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 wiring in the first pixel driving circuit 102 can be compressed with The space occupied by the device and the positional relationship between the signal wiring and the device are changed to make the structure of the first pixel driving circuit 102 more compact, thereby leaving necessary space for the display light-transmitting area 100c.
- the first pixel driving circuits 102 share at least one signal wiring, and the signal wiring may include a scan line Scan, a data line Data, a control signal line EM, a reset signal line Vi, and a first power supply.
- At least two of the first pixel driving circuits 102 share one first power signal trace Vdd, and at least two of the first pixel driving circuits 102 are respectively disposed on the first power signal
- the left and right sides of the wiring Vdd are kept symmetrical, thereby further reducing the wiring space of the first pixel driving circuit 102 and increasing the size of the display light-transmitting area 100c.
- FIG. 5B is a wiring structure diagram of the 2T1C circuit structure adopted by the first pixel driving circuit 102.
- Two first pixel driving circuits 102 share one first power signal wiring Vdd, and two The driving transistor DTFT, the first switching transistor STFT1, the storage capacitor Cap, the light-emitting element, and the data line Data of the first pixel driving circuit 102 are respectively arranged on the left and right sides of the first power signal wiring Vdd , And keep symmetrical settings respectively.
- 6B is a wiring structure diagram of the 4T1C circuit structure adopted by the first pixel driving circuit 102.
- Two first pixel driving circuits 102 share one first power signal wiring Vdd, and two 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 first pixel driving circuit 102 are respectively arranged On the left and right sides of the first power signal wiring Vdd, they are arranged symmetrically.
- FIG. 7B shows the wiring structure diagram of the 7T1C circuit structure adopted by the first pixel driving circuit 102.
- the two first pixel driving circuits 102 share one first power signal wiring Vdd, and two The driving transistor DTFT, the first switching transistor STFT1, the second switching transistor STFT2, the third switching transistor STFT3, the fourth switching transistor STFT4, and the fifth switch of the first pixel driving circuit 102
- the transistor STFT5, the sixth switching transistor STFT6, the storage capacitor Cap, the light-emitting element, and the data line Data are respectively arranged on the left and right sides of the first power signal wiring Vdd, and are arranged symmetrically.
- the transistors used in the embodiments of the present invention can all be thin film transistors or field effect transistors or other devices with the same characteristics. Since the source and drain of the thin film transistors used here are symmetrical, the source and The drain is no difference. In order to distinguish the two electrodes of the thin film transistor except for the gate electrode, one of the electrodes is called the source and the other is called the drain. In addition, thin film transistors can be classified into N-type thin film transistors or P-type thin film transistors according to the characteristics of thin film transistors. In applications, the types of components in the pixel circuit can be flexibly selected according to the situation.
- the thin film transistors may all be P-type transistors; or, the thin film transistors may be all N-type transistors; or, some thin film transistors are N-type thin film transistors, and some thin film transistors are P-type thin film transistors. It is easy to understand that When an N-type thin film transistor is used, the first electrode can be the source and the second electrode can be the drain. When the P-type thin film transistor is used, the first electrode can be the drain and the second electrode can be the source. .
- a plurality of the first pixel driving circuits 102 may be gathered together to form a pixel driving circuit island 10.
- Each of the pixel driving circuit islands 10 includes a plurality of first pixel driving circuits 102, It is understood that each of the pixel drive circuit islands 10 is formed by clustering a plurality of the first pixel drive circuits 102 in an island shape, and clustering together is relatively scattered compared to the pixel drive circuits. Yes, the size of the display transparent area 100c can be further increased.
- each pixel driving circuit island 102 includes m ⁇ n first pixel driving circuits 102 arranged in an array, where m represents the number of rows of the first pixel driving circuit 102, and n represents the For the number of columns of the first pixel driving circuit 102, m and n are both 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.
- the value range of m is greater than or equal to 3 and less than 64
- the value range of n is greater than or equal to 1 and less than 64.
- An embodiment of the present invention further provides a display device, the display device comprising the above-mentioned display panel 100 and a photosensitive element, the photosensitive element is disposed on one side of the display panel 100 and is disposed corresponding to the additional function area 100b, wherein:
- the photosensitive element can be a camera and an optical touch component.
- the display panel and the display device provided by the embodiments of the present invention combine the circuit structure of the first pixel driving circuit that drives the first display pixel in the display light-transmitting area to emit light and the second display pixel that drives the second display pixel in the main display area to emit light.
- the circuit structures of the two pixel drive circuits are different. By reducing the number of devices, device size, and wiring space of the first pixel drive circuit, the area occupied by the first pixel drive circuit in the additional function area is reduced, thereby increasing the size of the display light-transmitting area and improving It displays the light transmittance of the light-transmitting area, thereby improving the photographing effect of the under-screen camera.
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Abstract
本发明提供一种显示面板及显示装置，显示面板将驱动显示透光区第一显示像素发光的第一像素驱动电路的电路结构与驱动主显示区的第二显示像素发光的第二像素驱动电路的电路结构不同，以减少第一像素驱动电路占据功能附加区的面积，从而增加了显示透光区的面积，提高了显示透光区的透光率，进而提升了屏下摄像头的拍照效果。
Description
本发明涉及显示技术领域，尤其涉及一种显示面板及显示装置。
全面屏由于极高的屏占比，给人们带来全新的视觉体验和感官冲击，成为显示面板厂商竞相追求的目标。
目前屏下摄像头常用设计是对显示面板摄像头区域进行挖孔处理，摄像头透光区域不显示画面，这种方式面板穿透率会比较高，但用户显示体验不好，无法呈现全屏的效果；而另一种方式是显示面板上设置显示透光区，并在显示面板的显示透光区对应的位置设置屏下摄像头，提高了用户体验，成为显示面板厂商竞相追求的目标，然而，采用此种方式，显示面板的显示透光区的透光率较低，以至于屏下摄像头的拍照效果较差。
综上所述，需要提供一种新的显示面板及显示装置，来解决上述技术问题。
本发明提供一种显示面板和显示装置，解决了现有的显示面板的显示透光区的透光率较低，以至于屏下摄像头的拍照效果较差的技术问题。
为解决上述问题，本发明提供的技术方案如下：
本发明实施例提供一种显示面板，所述显示面板包括主显示区以及至少一功能附加区，所述功能附加区中具有至少一显示透光区，所述显示透光区的尺寸为600~10000um，所述显示透光区设置有多个第一显示像素，在所述功能附加区之内且对应所述显示透光区的外围设置有多个第一像素驱动电路，至少部分所述第一像素驱动电路用于驱动所述第一显示像素发光；
在所述主显示区设置有多个第二显示像素以及多个第二像素驱动电路，所述第二像素驱动电路驱动所述第二显示像素发光；
其中，所述第一像素驱动电路和所述第二像素驱动电路的电路结构不同，以使所述第一像素驱动电路占据所述功能附加区的面积小于所述第二像素驱动电路占据所述主显示区的面积。
根据本发明实施例提供的显示面板，所述第一像素驱动电路的器件面积小于所述第二像素驱动电路的器件面积，和/或所述第一像素驱动电路的布线空间小于所述第二像素驱动电路的布线空间。
根据本发明实施例提供的显示面板，所述第一像素驱动电路的器件数量小于所述第二像素驱动电路的器件数量。
根据本发明实施例提供的显示面板，所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；
所述第一像素驱动电路的器件包括两个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括四个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括六个薄膜晶体管、存储电容以及发光元件。
根据本发明实施例提供的显示面板，所述第一像素驱动电路的器件尺寸小于所述第二像素驱动电路的器件尺寸。
根据本发明实施例提供的显示面板，所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；所述第一像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件。
根据本发明实施例提供的显示面板，在所述显示透光区的外围且在所述功能附加区之内还设置有多条信号走线，多条所述信号走线与多个所述第一像素驱动电路电性连接，其中，至少两个所述第一像素驱动电路共用至少一条所述信号走线，且沿至少一条所述信号走线对称设置。
根据本发明实施例提供的显示面板，所述信号走线包括电源信号走线，至少两个所述第一像素驱动电路共用一条所述电源信号走线，且沿所述电源信号走线对称设置。
本发明实施例提供一种显示面板，所述显示面板包括主显示区以及至少一功能附加区，所述功能附加区中具有至少一显示透光区，所述显示透光区设置有多个第一显示像素，在所述功能附加区之内且对应所述显示透光区的外围设置有多个第一像素驱动电路，至少部分所述第一像素驱动电路用于驱动所述第一显示像素发光；
在所述主显示区设置有多个第二显示像素以及多个第二像素驱动电路，所述第二像素驱动电路驱动所述第二显示像素发光；
其中，所述第一像素驱动电路和所述第二像素驱动电路的电路结构不同，以使所述第一像素驱动电路占据所述功能附加区的面积小于所述第二像素驱动电路占据所述主显示区的面积。
根据本发明实施例提供的显示面板，所述第一像素驱动电路的器件面积小于所述第二像素驱动电路的器件面积，和/或所述第一像素驱动电路的布线空间小于所述第二像素驱动电路的布线空间。
根据本发明实施例提供的显示面板，所述第一像素驱动电路的器件数量小于所述第二像素驱动电路的器件数量。
根据本发明实施例提供的显示面板，所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；
所述第一像素驱动电路的器件包括两个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括四个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括六个薄膜晶体管、存储电容以及发光元件。
根据本发明实施例提供的显示面板，所述第一像素驱动电路的器件尺寸小于所述第二像素驱动电路的器件尺寸。
根据本发明实施例提供的显示面板，所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；所述第一像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件。
根据本发明实施例提供的显示面板，在所述显示透光区的外围且在所述功能附加区之内还设置有多条信号走线，多条所述信号走线与多个所述第一像素驱动电路电性连接，其中，至少两个所述第一像素驱动电路共用至少一条所述信号走线，且沿至少一条所述信号走线对称设置。
根据本发明实施例提供的显示面板，所述信号走线包括电源信号走线，至少两个所述第一像素驱动电路共用一条所述电源信号走线，且沿所述电源信号走线对称设置。
根据本发明实施例提供的显示面板，所述第一显示像素包括第一像素阳极，在所述显示透光区设置有至少一透明走线，其中，所述透明走线电性连接所述第一像素阳极和所述第一像素驱动电路，以使至少部分所述第一像素驱动电路驱动所述第一显示像素发光。
根据本发明实施例提供的显示面板，所述第一像素阳极通过至少部分位于所述显示透光区，以及部分位于所述显示透光区外围且在所述功能附加区内的所述透明走线与所述第一像素驱动电路电性连接。
根据本发明实施例提供的显示面板，所述第一像素阳极通过至少部分位于所述主显示区，以及部分位于所述显示透光区外围且在所述功能附加区内的所述透明走线与所述第一像素驱动电路电性连接。
本发明实施例提供一种显示装置，所述显示装置包括上述显示面板；以及
感光元件，所述感光元件设置于所述显示面板的一侧且对应所述功能附加区设置。
本发明的有益效果为：本发明提供的显示面板及显示装置，通过将驱动显示透光区第一显示像素发光的第一像素驱动电路的电路结构与驱动主显示区的第二显示像素发光的第二像素驱动电路的电路结构不同，通过减少第一像素驱动电路的器件数量、器件尺寸以及布线空间以减少第一像素驱动电路占据功能附加区的面积，从而增加了显示透光区的面积，提高了显示透光区的透光率，进而提升了屏下摄像头的拍照效果。
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种显示面板的平面结构示意图；
图2为本发明实施例提供的一种功能附加区的平面结构示意图；
图3为本发明实施例提供的一种显示面板的截面结构示意图；
图4为本发明实施例提供的另一种显示面板的截面结构示意图；
图5A为本发明实施例提供的第一像素驱动电路采用的2T1C电路结构示意图；
图5B为本发明实施例提供的第一像素驱动电路采用的2T1C电路布线结构示意图；
图6A为本发明实施例提供的第一像素驱动电路采用的4T1C电路结构示意图；
图6B为本发明实施例提供的第一像素驱动电路采用的4T1C电路布线结构示意图；
图7A为本发明实施例提供的第一像素驱动电路采用的7T1C电路结构示意图；
图7B为本发明实施例提供的第一像素驱动电路采用的7T1C电路布线结构示意图；
图8为本发明实施例提供的一种像素驱动电路岛的结构示意图。
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
本发明针对现有技术的显示面板及显示装置，显示透光区的透光率较低，以至于屏下摄像头的拍照效果较差的技术问题，本实施例能够解决该缺陷。
如图1所示，本发明实施例提供的显示面板100为主动矩阵式有机发光二极管显示面板，所述显示面板100包括主显示区100a以及至少一功能附加区100b，其中，所述主显示区100a为主要用于显示图像的区域；所述功能附加区100b用于放置感光元件，所述功能附加区100b中具有至少一显示透光区100c，所述显示透光区100c用于显示图像的同时，可以透过光线以使位于所述显示面板100的一侧且对应所述显示透光区100c设置的所述感光元件接收到光信号，其中，所述感光元件可为摄像头、光学触控组件以及指纹识别传感器等，以使所述显示面板能够实现例如拍照功能、光学触控功能以及光学指纹识别等功能。
如图2所示，所述功能附加区100b中可以设置多个所述显示透光区100c，所述显示透光区100c可以为圆形、矩形、圆角矩形或不规则多边形；每个所述显示透光区100c的尺寸为0.36mm2-100mm2，以保证所述显示面板100的所述功能附加区100b对应设置摄像头时，摄像头能具有良好的拍照效果，并降低工艺难度。
需要说明的是，为了便于说明本发明实施例的技术方案，本发明实施例以所述显示面板100具有一个所述功能附加区100b，所述功能附加区100b具有一个所述显示透光区100c进行阐述说明。
由于所述显示面板100的像素驱动电路包括多个金属膜层，例如多晶硅层、控制极层以及源漏极金属层等，而金属膜层具有遮光作用，故显示面板100对应设置所述像素驱动电路的区域不具有透光性，而且多个金属膜层对光线存在反射、衍射和干涉等现象，因此将像素驱动电路设置于所述显示透光区100c外围，使得所述显示透光区100c内由于未设置有像素驱动电路而具有良好的透光性。
如图3所示，所述显示面板100包括基板101、第一像素驱动电路102、第二像素驱动电路103、至少两绝缘层104、透明走线105、多个第一显示像素106、多个第二显示像素107以及多条信号走线。
在对应所述显示透光区100c的外围且位于所述功能附加区100b内的所述基板101上设置有多个所述第一像素驱动电路102，多个第一显示像素106设置于所述绝缘层104远离所述基板101的一侧且位于所述显示透光区100c内，至少部分所述第一像素驱动电路102驱动所述第一显示像素106发光，所述第一显示像素106包括第一像素阳极1061；多个第二显示像素107设置于所述绝缘层104远离所述基板101的一侧，且位于所述主显示区100a内，在对应所述主显示区100a的所述基板101上还设置有多个第二像素驱动电路103以驱动多个所述第二显示像素107发光，每个组成所述第二显示像素107的子像素下方均对应设置一个所述第二像素驱动电路103，所述第二显示像素107包括第二像素阳极1071。
所述显示面板100还包括像素定义层108，所述像素定义层108覆盖所述第一像素阳极1061、所述第二像素阳极1071以及所述绝缘层104。
所述功能附加区100b设置有多条透明走线105，所述第一显示像素106通过所述透明走线105与所述第一像素驱动电路102电性连接，多条所述透明走线105包括位于不同层的至少两层所述透明走线105。在本发明实施例中，所述透明走线105为三层，所述透明走线105包括第一透明走线1051、第二透明走线1052以及第三透明走线1053，所述第一透明走线1051、所述第二透明走线1052以及所述第三透明走线1053分别位于不同层；具体地，设置于相同层的每相邻两条所述透明走线105之间的距离大于2um，以避免同一层相邻两条所述透明走线105之间发生短路；所述透明走线105的线宽大于1um，以避免所述透明走线105由于线宽过小而发生断路。
在一实施方式中，所述第一显示像素106通过至少部分位于所述显示透光区100a，以及部分位于所述显示透光区100a外围且在功能附加区100b内的所述透明走线105与所述第一像素驱动电路102电性连接，也就是说，主要在所述显示透光区100c设置所述透明走线105。
多个所述第一显示像素106中的部分所述第一显示像素106与所述第一像素驱动电路102之间可以通过一层或两层或三层所述透明走线105电性连接，本发明实施例以分所述第一显示像素106与所述第一像素驱动电路102之间通过三层所述透明走线105电性连接
继续参考图3，所述绝缘层104为四层，具体包括第一绝缘层1041、第二绝缘层1042、第三绝缘层1043以及第四绝缘层1044；其中，所述第一绝缘层1041覆盖所述第一像素驱动电路102和所述第二像素驱动电路103，在所述第一绝缘层1041上设置有第一透明走线1051，所述第一透明走线1051至少部分位于所述功能附加区100b，另一部分位于所述显示透光区100c；所述第二绝缘层1042覆盖所述第一绝缘层1041以及所述第一透明走线1051，在所述第二绝缘层1041上设置有第二透明走线1052，所述第二透明走线1052位于所述显示透光区100c；所述第三绝缘层1043覆盖所述第二绝缘层1041以及所述第二透明走线1052，在所述第三绝缘层1043上设置有第三透明走线1053，所述第三透明走线1053位于所述显示透光区100c；所述第四绝缘层1044覆盖所述第三绝缘层1043以及所述第三透明走线1053；多个所述第一像素阳极1061，位于所述显示透光区100c的所述第四绝缘层1044上；多个所述第二像素阳极1071，位于所述主显示区100a的所述第四绝缘层1044上；其中，所述第一像素阳极1061与所述第一像素驱动电路102依次通过所述第三透明走线1053、所述第二透明走线1052以及所述第一透明走线1051电性连接，相邻两层所述透明走线之间以所述绝缘层上的过孔连接。
进一步地，所述第一透明走线1051、所述第二透明走线1052以及所述第三透明走线1053在所述基板101上的正投影至少部分重合，采用此种叠层布线的方式，有利于增加所述透明走线105的数量，从而增大所述显示透光区100c的面积，以提高其透光率。
在一实施方式中，所述第一像素阳极1061通过至少部分位于所述主显示区100a，以及部分位于所述功能附加区100b的所述透明走线105与所述第一像素驱动电路102电性连接，也就是说，也可以同时在所述主显示区100a设置所述透明走线105，以电性连接所述第一像素驱动电路102和所述第一像素阳极1061，可进一步地增加所述透明走线105的布线空间，避免出现位于同一层且相邻的所述透明走线105之间的间距较窄而出现短路的问题。
如图4所示，图4与图3的区别在于，在所述第一绝缘层1041上设置有第一透明走线1051，所述第一透明走线1051至少部分位于所述功能附加区100b，另一部分从所述功能附加区100b延伸至所述主显示区100a；所述第二绝缘层1042覆盖所述第一绝缘层1041以及所述第一透明走线1051，在所述第二绝缘层1042上设置有第二透明走线1052，所述第二透明走线1052位于所述主显示区100a；所述第三绝缘层1043覆盖所述第二绝缘层1042以及所述第二透明走线1052，所述第三透明走线1052从所述主显示区100a经过所述功能附加区100b延伸至所述显示透光区100c；所述第四绝缘层1044覆盖所述第三绝缘层1043以及所述第三透明走线1053；所述第一像素阳极1061与所述第一像素驱动电路102之间依次通过所述第三透明走线1053、所述第二透明走线1052以及所述第一透明走线1051电性连接。
可以理解的是，靠近所述主显示区100a的部分所述第一显示像素106的所述第一像素阳极1061通过至少部分位于所述主显示区100a，以及部分位于所述显示透光区100c外围且在所述功能附加区100b内的所述透明走线105与所述第一像素驱动电路102连接；远离所述主显示区100a的部分所述第一显示像素106的所述第一像素阳极1061通过至少部分位于所述显示透光区100c，以及部分位于所述显示透光区100c外围且在功能附加区100b内的所述透明走线105与所述第一像素驱动电路102电性连接，以减少所述透明走线105需要的整体布线空间，且可进一步增加所述透明走线105的数量。
在所述功能附加区100b之内且位于所述显示透光区100c的外围的所述基板101上还设置有多条所述信号走线，用于传输驱动所述第一显示像素106的信号至所述第一像素阳极1061。由于所述信号走线也具有遮光作用，故将所述信号走线设置于所述显示透光区100c外围，使得所述显示透光区100c内由于未设置有所述信号走线而进一步提升其透光性。
具体地，所述信号走线可以包括第一信号走线和第二信号走线，其中，所述第一信号走线可以包括扫描线、控制所述第一显示像素106发光的发光信号线、控制所述第一像素阳极1061复位的复位线；所述第二信号走线可以包括数据线，用于传输驱动所述第一显示像素106的数据电压。
具体地，所述第一像素驱动电路102、所述信号走线以及所述第一像素阳极1061占所述功能附加区100b的面积小于或等于50%，多个所述第一像素阳极1061占所述显示透光区100c的面积小于50%，以保证所述显示透光区100c具有足够的透光面积，在本发明实施例中，所述显示透光区100c的尺寸为600~10000um。
进一步地，继续参考图3、图4，所述显示面板100还包括设置于所述至少两绝缘层104之间的导电层109，所述导电层109位于所述主显示区100a，所述第二显示像素107的所述第二像素阳极1071通过所述导电层109与所述第二像素驱动电路103电性连接，以使所述第二像素驱动电路103驱动所述第二显示像素107发光，能够增强导电性。需要说明的是，所述导电层109的布线方式和材料、所述第二像素阳极1071和所述第二像素驱动电路103电性连接方式可以与所述透明走线105相同，且与所述透明走线105采用同一制程制得，有利于节省工艺步骤，降低生产成本，具体可参照上述实施方式，在此不再赘述。
进一步地，由于所述第一像素驱动电路102以及所述信号走线占据所述功能附加区100b的面积大小将会影响所述显示透光区100c的尺寸大小，具体地，所述第一像素驱动电路102及信号走线占据所述功能附加区100b的面积越大，所述显示透光区100c的尺寸大小；所述第一像素驱动电路102以及信号走线占据所述功能附加区100b的面积越小，所述显示透光区100c的尺寸越大。因此，本发明实施例通过将所述第一像素驱动电路102和所述第二像素驱动电路103采用不同的电路结构，以使所述第一像素驱动电路102占据所述功能附加区100b的面积小于所述第二像素驱动电路103占据所述主显示区100a的面积，从而增大所述显示透光区100c的尺寸。
其中，不同的电路结构可以表现在器件面积以及布线结构等方面，故可以通过调整所述第一像素驱动电路102的器件面积以及布线结构，使其电路结构与所述第二像素驱动电路103的电路结构不同，从而为所述透光显示区100c留出必要的空间。本发明实施例将从以上两方面进行阐述说明。
在一实施方式中，所述第一像素驱动电路102的器件面积小于所述第二像素驱动电路103的器件面积，其中，所述器件面积主要由器件数量以及器件尺寸决定，所述第一像素驱动电路102和所述第二像素驱动电路103的器件主要指的是组成所述第一像素驱动电路102和所述第二像素驱动电路103的薄膜晶体管器件以及存储电容。
所述第一像素驱动电路102的器件数量小于所述第二像素驱动电路103的器件数量。在本发明实施例中，用于驱动所述主显示区100a的所述第二显示像素107发光的所述第二像素驱动电路103采用7T1C电路，所述7T1C电路包括七个薄膜晶体管和一个存储电容；因此，用于驱动所述显示透光区100c的所述第一显示像素106发光的所述第一像素驱动电路102则可以采用2T1C电路、4T1C电路以及6T1C电路中的任意一种；当然，在其他实施例中，所述第二像素驱动电路103也可以采用4T1C电路或6T1C电路，具体地，当所述第二像素驱动电路103采用4T1C电路时，所述第一像素驱动电路102可以采用2T1C电路；当所述第二像素驱动电路103采用6T1C电路时，所述第一像素驱动电路可以采用2T1C电路或4T1C电路，为了清楚地解释本发明的技术方案，本发明实施例以所述第二像素驱动电路103采用7T1C电路为例进行阐述说明。
例如，如图5A所示，所述第一像素驱动电路102采用2T1C电路，所述2T1C电路包括两个薄膜晶体管以及一个存储电容，两个薄膜晶体管包括驱动晶体管DTFT和第一开关晶体管STFT1，其中，所述第一开关晶体管STFT1的控制极连接扫描线Scan，所述第一开关晶体管STFT1的第一极连接所述驱动晶体管DTFT的第一极以及所述发光单元的阳极，第一开关晶体管STFT1的第二极连接所述驱动晶体管DTFT的控制极和所述存储电容Cap的第一端；所述驱动晶体管DTFT的第二极连接所述存储电容Cap的第二端以及数据线；所述存储电容Cap的第二端连接第一电源信号走线Vdd；所述发光元件的阴极连接第二电源信号走线Vss。
再如，如图6A所示，所述第一像素驱动电路102采用4T1C电路，所述4T1C电路包括四个薄膜晶体管以及一个存储电容Cap，四个薄膜晶体管包括驱动晶体管DTFT和第一开关晶体管STFT1、第二开关晶体管STFT2以及第三开关晶体管STFT3，其中，所述第一开关晶体管STFT1的控制极连接扫描线Scan，所述第一开关晶体管STFT1的第一极连接所述驱动晶体管DTFT的第一极以及所述第三开关晶体管STFT3的第二极，所述第一开关晶体管STFT1的第二极连接所述驱动晶体管DTFT的控制极和所述存储电容Cap的第一端；所述第二开关晶体管STFT2的控制极连接所述第三开关晶体管STFT3的控制极，所述第二开关晶体管STFT2的第一极连接所述驱动晶体管DTFT的第二极和数据线data，所述第二开关晶体管STFT2的第二极连接所述存储电容Cap的第二端；所述第三开关晶体管STFT3的控制极连接控制信号线EM，所述第三开关晶体管STFT3的第二极连接所述发光元件的阳极；所述驱动晶体管DTFT的第二极连接数据线Data；所述存储电容Cap的第二端连接第一电源信号走线Vdd；所述发光单元的阴极连接第二电源信号走线Vss。
所述第一像素驱动电路102的器件尺寸小于所述第二像素驱动电路103的器件尺寸，所述第一像素驱动电路102采用的薄膜晶体管以及存储电容Cap的尺寸小于所述第二像素驱动电路103采用的薄膜晶体管以及存储电容Cap的尺寸，以使所述第一像素驱动电路102的器件面积相比所述第二像素驱动电路103的器件面积进一步减小。
需要说明的是，在此种情况下，所述第一像素驱动电路102采用的电路结构可以与所述第二像素驱动电路103采用的电路结构相同，例如，所述第一像素驱动电路102和所述第二像素驱动电路103均采用7T1C电路，如图7A所示，所述第一像素驱动电路102包括七个薄膜晶体管以及一个存储电容Cap，七个薄膜晶体管包括驱动晶体管DTFT和第一开关晶体管STFT1、第二开关晶体管STFT2、第三开关晶体管STFT3、第四开关晶体管STFT4、第五开关晶体管STFT5、第六开关晶体管STFT6，其中，所述第一开关晶体管STFT1的控制极连接第一扫描线Scan[n-1]，所述第一开关晶体管STFT1的第一极连接所述第六晶体管STFT6的第一极以及复位信号线Vi，所述第一开关晶体管STFT1的第二极连接所述驱动晶体管DTFT的控制极和所述存储电容Cap的第一端；所述第二开关晶体管STFT2的控制极连接所述第三开关晶体管STFT3的控制极以及第二扫描线Scan[n]，所述第二开关晶体管STFT2的第一极连接所述驱动晶体管DTFT的第一极以及所述第四开关晶体管STFT4的第二极，所述第二开关晶体管STFT2的第二极连接所述驱动晶体管DTFT的控制极以及所述存储电容Cap的第一端；所述第三开关晶体管STFT3的控制极连接所述第二开关晶体管STFT2的控制极，所述第三开关晶体管STFT3的第一极连接所述驱动晶体管DTFT的第二极，所述第三开关晶体管STFT3的第二极连接所述数据线Data；所述第四开关晶体管STFT4的控制极连接所述第五开关晶体管STFT5的控制极以及控制信号线EM[n]，所述第四开关晶体管STFT4的第一极连接发光元件的阳极；所述第五开关晶体管STFT5的第一极连接所述第三开关晶体管STFT3的第二极以及所述驱动晶体管DTFT的第二极，所述第五开关晶体管STFT5的第二极连接所述存储电容Cap的第二端。所述第六开关晶体管STFT6的控制极连接第二扫描线Scan[n]，所述第六开关晶体管STFT6的第一极连接所述发光元件的阳极，所述第六开关晶体管STFT6的第二极连接所述复位信号线Vi以及所述第一开关晶体管STFT1的第二极。所述存储电容Cap的第二端连接第一电源信号走线Vdd；所述发光单元的阴极连接第二电源信号走线Vss。
需要说明的是，所述发光元件为主动矩阵式有机发光二极管。
在一实施方式中，所述第一像素驱动电路102的布线空间小于所述第二像素驱动电路103的布线空间，可通过挤压所述第一像素驱动电路102中的所述信号走线与器件的占据空间以及改变所述信号走线与器件的位置关系，以使所述第一像素驱动电路102的结构更为紧凑，从而为所述显示透光区100c留出必要的空间。
进一步地，至少两个所述第一像素驱动电路102共用至少一条信号走线，所述信号走线可以为包括扫描线Scan、数据线Data、控制信号线EM、复位信号线Vi、第一电源信号走线Vdd以及第二电源信号走线Vss等。
在本发明实施例中，至少两个所述第一像素驱动电路102共用一条所述第一电源信号走线Vdd，至少两个所述第一像素驱动电路102分别设置于所述第一电源信号走线Vdd的左右两侧且保持对称，从而进一步减小了所述第一像素驱动电路102的布线空间，增大了所述显示透光区100c的尺寸。
具体地，如图5B所示为所述第一像素驱动电路102采用的2T1C电路结构的布线结构图，两个所述第一像素驱动电路102共用一条所述第一电源信号走线Vdd，两个所述第一像素驱动电路102的所述驱动晶体管DTFT、所述第一开关晶体管STFT1、存储电容Cap、发光元件以及数据线Data分别设置于所述第一电源信号走线Vdd的左右两侧，且分别保持对称设置。
如图6B所示为所述第一像素驱动电路102采用的4T1C电路结构的布线结构图，两个所述第一像素驱动电路102共用一条所述第一电源信号走线Vdd，两个所述第一像素驱动电路102的所述驱动晶体管DTFT、所述第一开关晶体管STFT1、所述第二开关晶体管STFT2、所述第三开关晶体管STFT3、存储电容Cap、发光元件、以及数据线Data分别设置于所述第一电源信号走线Vdd的左右两侧，且分别保持对称设置。
如图7B所示为所述第一像素驱动电路102采用的7T1C电路结构的布线结构图，两个所述第一像素驱动电路102共用一条所述第一电源信号走线Vdd，两个所述第一像素驱动电路102的所述驱动晶体管DTFT、所述第一开关晶体管STFT1、所述第二开关晶体管STFT2、所述第三开关晶体管STFT3、所述第四开关晶体管STFT4、所述第五开关晶体管STFT5、所述第六开关晶体管STFT6、存储电容Cap、发光元件以及数据线Data分别设置于所述第一电源信号走线Vdd的左右两侧，且分别保持对称设置。
需要说明的是，本发明实施例中采用的晶体管均可以为薄膜晶体管或场效应管或其他特性相同的器件，由于这里采用的薄膜晶体管的源极、漏极是对称的，所以其源极、漏极是没有区别的。为区分薄膜晶体管除控制极即栅极之外的两极，将其中一极称为源极，另一极称为漏极。此外，按照薄膜晶体管的特性区分可以将薄膜晶体管分为N型薄膜晶体管或P型薄膜晶体管，在应用中可根据情况灵活选用像素电路中各元器件的类型。本发明实施例中，薄膜晶体管可均为P型晶体管；或者，薄膜晶体管可均为N型晶体管；或者，部分薄膜晶体管为N型薄膜晶体管，部分薄膜晶体管为P型薄膜晶体管，容易理解的是，当采用N型薄膜晶体管时，其第一极可以是源极，第二极可以是漏极，当采用P型薄膜晶体管时，其第一极可以是漏极，第二极可以是源极。
进一步地，如图8所示，多个所述第一像素驱动电路102可以聚集在一起形成像素驱动电路岛10，每个所述像素驱动电路岛10包括多个第一像素驱动电路102，可以理解的是，每个所述像素驱动电路岛10是将多个所述第一像素驱动电路102呈岛状集中聚集在一起而形成，而集中聚集在一起是相对于像素驱动电路较分散而言的，可进一步增大所述显示透光区100c的尺寸。
具体地，每个所述像素驱动电路岛102包括m×n个阵列排布的所述第一像素驱动电路102，其中，m表示所述第一像素驱动电路102的行数，n表示所述第一像素驱动电路102的列数，m和n均为正整数，m和n中至少之一为大于1。m的取值范围为大于或等于3且小于128，n的取值范围为大于或等于1且小于128。进一步地，m的取值范围为大于或等于3且小于64，n的取值范围为大于或等于1且小于64。
本发明实施例还提供一种显示装置，所述显示装置包括上述显示面板100以及感光元件，所述感光元件设置于所述显示面板100的一侧且对应所述功能附加区100b设置，其中，所述感光元件可为摄像头以及光学触控组件。
有益效果为：本发明实施例提供的显示面板及显示装置，通过将驱动显示透光区第一显示像素发光的第一像素驱动电路的电路结构与驱动主显示区的第二显示像素发光的第二像素驱动电路的电路结构不同，通过减少第一像素驱动电路的器件数量、器件尺寸以及布线空间以减少第一像素驱动电路占据功能附加区的面积，从而增加了显示透光区的尺寸，提高了显示透光区的透光率，进而提升了屏下摄像头的拍照效果。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
Claims (20)
- 一种显示面板，其中所述显示面板包括主显示区以及至少一功能附加区，所述功能附加区中具有至少一显示透光区，所述显示透光区的尺寸为600~10000um，所述显示透光区设置有多个第一显示像素，在所述功能附加区之内且对应所述显示透光区的外围设置有多个第一像素驱动电路，至少部分所述第一像素驱动电路用于驱动所述第一显示像素发光；在所述主显示区设置有多个第二显示像素以及多个第二像素驱动电路，所述第二像素驱动电路驱动所述第二显示像素发光；其中，所述第一像素驱动电路和所述第二像素驱动电路的电路结构不同，以使所述第一像素驱动电路占据所述功能附加区的面积小于所述第二像素驱动电路占据所述主显示区的面积。
- 根据权利要求1所述的显示面板，其中所述第一像素驱动电路的器件面积小于所述第二像素驱动电路的器件面积，和/或所述第一像素驱动电路的布线空间小于所述第二像素驱动电路的布线空间。
- 根据权利要求2所述的显示面板，其中所述第一像素驱动电路的器件数量小于所述第二像素驱动电路的器件数量。
- 根据权利要求3所述的显示面板，其中所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；所述第一像素驱动电路的器件包括两个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括四个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括六个薄膜晶体管、存储电容以及发光元件。
- 根据权利要求2所述的显示面板，其中所述第一像素驱动电路的器件尺寸小于所述第二像素驱动电路的器件尺寸。
- 根据权利要求5所述的显示面板，其中所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；所述第一像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件。
- 根据权利要求2所述的显示面板，其中在所述显示透光区的外围且在所述功能附加区之内还设置有多条信号走线，多条所述信号走线与多个所述第一像素驱动电路电性连接，其中，至少两个所述第一像素驱动电路共用至少一条所述信号走线，且沿至少一条所述信号走线对称设置。
- 根据权利要求7所述的显示面板，其中所述信号走线包括电源信号走线，至少两个所述第一像素驱动电路共用一条所述电源信号走线，且沿所述电源信号走线对称设置。
- 一种显示面板，其中所述显示面板包括主显示区以及至少一功能附加区，所述功能附加区中具有至少一显示透光区，所述显示透光区设置有多个第一显示像素，在所述功能附加区之内且对应所述显示透光区的外围设置有多个第一像素驱动电路，至少部分所述第一像素驱动电路用于驱动所述第一显示像素发光；在所述主显示区设置有多个第二显示像素以及多个第二像素驱动电路，所述第二像素驱动电路驱动所述第二显示像素发光；其中，所述第一像素驱动电路和所述第二像素驱动电路的电路结构不同，以使所述第一像素驱动电路占据所述功能附加区的面积小于所述第二像素驱动电路占据所述主显示区的面积。
- 根据权利要求9所述的显示面板，其中所述第一像素驱动电路的器件面积小于所述第二像素驱动电路的器件面积，和/或所述第一像素驱动电路的布线空间小于所述第二像素驱动电路的布线空间。
- 根据权利要求10所述的显示面板，其中所述第一像素驱动电路的器件数量小于所述第二像素驱动电路的器件数量。
- 根据权利要求11所述的显示面板，其中所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；所述第一像素驱动电路的器件包括两个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括四个薄膜晶体管、存储电容以及发光元件，或所述第一像素驱动电路的器件包括六个薄膜晶体管、存储电容以及发光元件。
- 根据权利要求10所述的显示面板，其中所述第一像素驱动电路的器件尺寸小于所述第二像素驱动电路的器件尺寸。
- 根据权利要求13所述的显示面板，其中所述第二像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件；所述第一像素驱动电路的器件包括七个薄膜晶体管、存储电容以及发光元件。
- 根据权利要求10所述的显示面板，其中在所述显示透光区的外围且在所述功能附加区之内还设置有多条信号走线，多条所述信号走线与多个所述第一像素驱动电路电性连接，其中，至少两个所述第一像素驱动电路共用至少一条所述信号走线，且沿至少一条所述信号走线对称设置。
- 根据权利要求15所述的显示面板，其中所述信号走线包括电源信号走线，至少两个所述第一像素驱动电路共用一条所述电源信号走线，且沿所述电源信号走线对称设置。
- 根据权利要求9所述的显示面板，其中所述第一显示像素包括第一像素阳极，在所述显示透光区设置有至少一透明走线，其中，所述透明走线电性连接所述第一像素阳极和所述第一像素驱动电路，以使至少部分所述第一像素驱动电路驱动所述第一显示像素发光。
- 根据权利要求17所述的显示面板，其中所述第一像素阳极通过至少部分位于所述显示透光区，以及部分位于所述显示透光区外围且在所述功能附加区内的所述透明走线与所述第一像素驱动电路电性连接。
- 根据权利要求17所述的显示面板，其中所述第一像素阳极通过至少部分位于所述主显示区，以及部分位于所述显示透光区外围且在所述功能附加区内的所述透明走线与所述第一像素驱动电路电性连接。
- 一种显示装置，其特征在于，所述显示装置包括权利要求9的所述显示面板；以及感光元件，所述感光元件设置于所述显示面板的一侧且对应所述功能附加区设置。
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| CN109935173B (zh) * | 2019-03-29 | 2021-10-26 | 上海天马微电子有限公司 | 一种显示模组及显示装置 |
| CN210575037U (zh) * | 2019-08-09 | 2020-05-19 | 武汉华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
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- 2019-11-07 WO PCT/CN2019/116124 patent/WO2021027109A1/zh active Application Filing
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