CN110600531B

CN110600531B - Display panel, driving method thereof and display device

Info

Publication number: CN110600531B
Application number: CN201911046273.9A
Authority: CN
Inventors: 杨星星
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-10-29
Anticipated expiration: 2039-10-30
Also published as: CN110600531A

Abstract

The invention discloses a display panel, a driving method thereof and a display device, wherein a display area comprises a photosensitive device setting area, and when a photosensitive device is arranged in the photosensitive device setting area, the problem of large occupied area when the photosensitive device is arranged on a frame can be avoided, so that the frame setting is narrow, the screen occupation ratio is improved, and the design of a narrow frame is realized. And, when being provided with a plurality of sensitization device setting areas in display panel, through the first signal line electricity connection that adjacent M row first pixel corresponds, and this M row first pixel electricity connects partial first signal line in each first signal line runs through sensitization device setting area for run through the quantity of the regional first signal line of sensitization device setting and reduce, be favorable to improving the regional luminousness that sensitization device set up, and then improve the light volume that sensitization device received, improve the performance of sensitization device, thereby improve display device's performance.

Description

Display panel, driving method thereof and display device

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display panel, a driving method thereof, and a display device.

Background

The electroluminescent display is a self-luminous device, can realize display without arranging a backlight source, and compared with the liquid crystal display, the electroluminescent display can be made thinner and lighter without arranging the backlight source, so that the electroluminescent display can be applied to various scenes.

The display panel in the electroluminescent display generally has a display area and a frame area, the frame area surrounds the display area, and optical devices such as a camera can be arranged in the frame area.

Therefore, how to improve the high screen ratio of the display panel and implement the narrow bezel design is a technical problem to be urgently solved by those skilled in the art.

Disclosure of Invention

The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for improving the high screen ratio of the display panel and realizing the design of a narrow frame.

In a first aspect, an embodiment of the present invention provides a display panel, including a display area;

the display area includes: a plurality of photosensitive device that arrange along the row direction set up the region, be located adjacent two photosensitive device sets up the first display area between the region, is located photosensitive device sets up regional keeping away from the second display area of one side of first display area and be a plurality of pixels that the array was arranged, the pixel includes: the display device comprises a first pixel and a second pixel, wherein the first pixel is positioned in the first display area and the second display area, and the second pixel is positioned in the photosensitive device arrangement area, and the density of the second pixel is smaller than that of the first pixel;

the display panel further includes: a plurality of first signal lines arranged in a column direction and extending in the row direction, the first signal lines being electrically connected to the pixels;

each of the first pixels is arranged in an array, the first signal lines corresponding to the first pixels in M adjacent rows are electrically connected, and a part of the first signal lines in each of the first signal lines electrically connected to the first pixels in the M rows penetrate through the photosensitive device arrangement region, where M is an integer greater than 1.

In a second aspect, an embodiment of the present invention provides a display device, including: the display panel and the photosensitive device provided by the embodiment of the invention;

the photosensitive device is correspondingly arranged in a photosensitive device arrangement area of the display panel.

In a third aspect, an embodiment of the present invention provides a method for driving the display panel, where the method includes:

the first pixels in the M adjacent rows simultaneously input the same first signal through the corresponding first signal lines.

The invention has the following beneficial effects:

according to the display panel, the driving method thereof and the display device provided by the embodiment of the invention, firstly, the display area comprises the photosensitive device setting area, and when the photosensitive device is arranged in the photosensitive device setting area, the problem of large occupied area when the photosensitive device is arranged on the frame can be avoided, so that the frame can be arranged narrowly, the screen occupation ratio is improved, and the design of the narrow frame is realized.

Secondly, when a plurality of photosensitive devices are arranged in the display panel, the first signal lines corresponding to the first pixels in the M adjacent lines are electrically connected, and part of the first signal lines in each first signal line electrically connected with the first pixels in the M adjacent lines penetrate through the photosensitive device arrangement area, so that the number of the first signal lines penetrating through the photosensitive device arrangement area is reduced, the shielding of the signal lines to light is reduced, the improvement of the light transmittance of the photosensitive device arrangement area is facilitated, the light quantity received by the photosensitive device is further improved, the performance of the photosensitive device is improved, and the performance of the display device is improved.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another display panel provided in the embodiment of the present invention;

FIG. 3 is an enlarged partial view of the dotted box 1 of FIG. 1;

FIG. 4 is an enlarged, fragmentary view of another portion of FIG. 1 within dashed box 1;

FIG. 5 is a partial schematic view of two first A pixels adjacent to each other in the column direction in FIG. 3;

FIG. 6 is a cross-sectional view taken along the line x1-x2 in FIG. 5;

FIG. 7 is another cross-sectional view taken along the line x1-x2 in FIG. 5;

FIG. 8 is an enlarged partial view of FIG. 1 within dashed line box 2;

FIG. 9 is a schematic diagram showing comparison between before and after adjustment of the first signal line in the photosensitive device setting region;

fig. 10 is a schematic diagram illustrating a connection relationship between a selection unit and a second signal line according to an embodiment of the present invention;

fig. 11 is a schematic diagram illustrating a connection relationship between another selection unit and a second signal line according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of another display device provided in the embodiment of the present invention.

Wherein B-non-display region, A1-first display region, A2-second display region, C-photo sensitive device setting region, Pb1, Pb2, Pb 3-first B pixel, Pa-first A pixel, P1-first pixel, P2-second pixel, P-pixel, D1, D2, D3, D4, D5-first terminal, 10a1, 10a2, 10a3, 10a4, 10a5, 10a6, 10b1, 10b 2-first signal lines, 11-light-emitting control signal lines, 12-grid lines, 20-second signal lines, 30a, 30b, 31, 32-connecting wires, 40-driving circuits, 50-multiplexers, 51-selecting units, 60-shielding structures, 100-display panels and 200-photosensitive devices.

Detailed Description

Embodiments of a display panel, a driving method thereof, and a display device according to embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the invention provides a display panel, as shown in fig. 1 to 4, where fig. 1 is a schematic structural diagram of a display panel, fig. 2 is a schematic structural diagram of another display panel, fig. 3 is a schematic partial enlarged view within a dashed line frame 1 in fig. 1, and fig. 4 is a schematic partial enlarged view within the dashed line frame 1 in fig. 1.

Referring to fig. 1 to 4, the display panel may include a display area a;

the display area a includes: a plurality of photosensitive device arrangement regions C arranged in a row direction (a direction shown as F1 in fig. 1 and 2), a first display region a1 located between two adjacent photosensitive device arrangement regions C, a second display region a2 located on a side of the photosensitive device arrangement region C away from the first display region a1, and a plurality of pixels P arranged in an array, the pixels P including: a first pixel P1 positioned in the first display region a1 and the second display region a2, and a second pixel P2 positioned in the photosensitive device disposing region C, wherein the density of the second pixel P2 is less than that of the first pixel P1;

in this regard, the shape of the photosensitive device disposing region C may be rectangular (as shown in fig. 1), elliptical (as shown in fig. 2), circular (not shown), polygonal (not shown), or other shapes, and may be disposed according to the shape and structure of the photosensitive device, and is not limited herein.

Referring to fig. 3 and 4, the display panel further includes: a plurality of first signal lines (e.g., 10a1, 10a2, 10a3, 10a4, 10a5, 10b1, 10b2) arranged in a column direction (e.g., a direction indicated by F2 in fig. 3 and 4) and extending in a row direction (e.g., a direction indicated by F1 in fig. 3 and 4), the first signal lines being electrically connected to the pixels P;

the first pixels P1 are arranged in an array, the first signal lines corresponding to the M adjacent rows of the first pixels P1 are electrically connected, and a part of the first signal lines electrically connected to the M rows of the first pixels P1 penetrate through the photosensitive device disposing region C, where M is an integer greater than 1.

For example, referring to fig. 3, h1 and h2 respectively denote two adjacent rows of first pixels, and the first signal lines corresponding to the two rows of first pixels are electrically connected, so that M is 2 at this time. Also, in fig. 3, taking two rows of first pixels labeled h1 and h2 as an example, the two rows correspond to 4 first signal lines, of which only 2 first signals penetrate through the photo-sensitive device arrangement region C.

For another example, referring to fig. 4, h1, h2 and h3 respectively represent three adjacent rows of first pixels, and the first signal lines (e.g., 10a3, 10a4 and 10a5) corresponding to the three rows of first pixels are electrically connected, so that M is 3 at this time. Also, in fig. 4, taking three rows of first pixels labeled h1, h2, and h3 as an example, the three rows correspond to 3 first signal lines, of which only 1 first signal passes through the photosensitive device disposing region C.

Of course, M is not limited to 2 or 3, and may be other values such as 4, 5, or 6, and may be set according to actual needs, and is not limited herein.

In addition, the number of the first signal lines penetrating through the photosensitive device setting area C in each of the first signal lines electrically connected to the M rows of first pixels is not limited herein, and the light shielding of the first signal lines on the photosensitive device setting area C can be reduced and the light transmittance of the photosensitive device setting area C can be improved by setting the first signal lines, which all belong to the protection scope of the embodiment of the present invention.

Therefore, in the embodiment of the invention, firstly, the display area a includes the photosensitive device setting area C, and when the photosensitive device is arranged in the photosensitive device setting area C, the problem that the photosensitive device is arranged on the frame of the display panel or a certain area needs to be reserved for the photosensitive device in the display panel to occupy the area of the display area can be avoided, so that the frame can be arranged narrowly, the screen occupation ratio is improved, and the design of the whole screen can be further realized by the narrow frame.

Secondly, when a plurality of photosensitive device setting areas C are arranged in the display panel, the first signal lines corresponding to the first pixels in the M adjacent lines are electrically connected, and part of the first signal lines in each first signal line electrically connected with the first pixels in the M lines penetrate through the photosensitive device setting areas C, so that the number of the first signal lines penetrating through the photosensitive device setting areas C is reduced, the improvement of the light transmittance of the photosensitive device setting areas C is facilitated, the light quantity received by the photosensitive device is further improved, the performance of the photosensitive device is improved, and the performance of the display device is further improved.

Optionally, in the embodiment of the present invention, two photosensitive device disposing areas C may be disposed, as shown in fig. 1, and of course, 3 photosensitive device disposing areas C (as shown in fig. 2) or more photosensitive device disposing areas C may also be disposed, and may be disposed according to practical situations, and are not limited herein.

In a specific implementation, in an embodiment of the present invention, the display panel further includes: a plurality of second signal lines which are arranged along the row direction and extend along the column direction, wherein any two adjacent first pixels in the same first pixel column are electrically connected with different second signal lines, and the second signal lines electrically connected with different first pixel columns are different;

the number of the second signal lines electrically connected with the first pixels in the same column is M.

For example, referring to fig. 3, the row direction is F1 direction, and the column direction is F2 direction, wherein the first signal lines corresponding to the first pixels of the adjacent 2 rows are electrically connected, such as the first signal lines corresponding to the first pixels of the 2 rows labeled as h1 and h 2; meanwhile, there are 2 second signal lines 20 electrically connected to the first pixels in each column, and two first pixels P1 adjacent to each other in the column direction (e.g., the direction of F2) are electrically connected to different second signal lines 20.

For another example, referring to fig. 4, the row direction is F1 direction, and the column direction is F2 direction, wherein the first signal lines corresponding to the first pixels in the adjacent 3 rows are electrically connected, such as the first signal lines corresponding to the first pixels in the 3 rows labeled as h1, h2 and h 3; meanwhile, there are 3 second signal lines 20 electrically connected to the first pixels in each column, and two first pixels P1 adjacent in the column direction (e.g., the direction of F2) are electrically connected to different data lines.

In this way, it can be ensured that only one first pixel P1 is lit at the same time when the first signal line and the second signal line 20 both input corresponding signals, so as to ensure that the display panel has higher display resolution when displaying images, thereby improving the display effect of the display panel.

Specifically, in the embodiment of the present invention, the first pixel is located not only in the first display region but also in the second display region, where the first pixel may include: the first pixel located in the first display region and the first second pixel located in the second display region are described below, and the arrangement of the first pixel and the first second pixel will be described below.

(one) for a first A pixel:

optionally, each first pixel is electrically connected with at least one first signal line;

the first display area is internally provided with connecting wires, and the first signal wires corresponding to the M rows of first A pixels are electrically connected through the connecting wires.

So, walk the line through connecting, can realize that the first signal line that the first pixel in M row corresponds is connected electrically to when guaranteeing that each first pixel is effectively driven, be favorable to reducing the quantity that runs through the regional first signal line of sensitization device setting, thereby improve the luminousness that sensitization device set up the region.

Wherein each of the first a pixels may be electrically connected to one of the first signal lines. For example, referring to fig. 4, the first pixel in each row is electrically connected to only one first signal line, and when the pixel includes a pixel circuit, the pixel circuit has only one first signal input terminal, and the pixel circuit may be, but is not limited to, the simplest 2T1C structure.

Of course, each of the first a pixels may be electrically connected to a plurality of first signal lines. For example, referring to fig. 3, the first pixels in each row are electrically connected to two first signal lines, and when the pixels include pixel circuits, the pixel circuits have two first signal input terminals (e.g., S1 and S2) with different control functions, and the pixel circuits may have any structure with two first signal input terminals, which is well known to those skilled in the art.

And when the first signal lines corresponding to the M rows of first pixels are electrically connected through the connecting wires, a plurality of connecting wires may be disposed between the first signal lines corresponding to the M rows of first pixels in the first display region.

For example, referring to fig. 4, for three first signal lines corresponding to three rows of first pixels to be electrically connected, the electrical connection is realized by a connection trace 31 and a connection trace 32, respectively. Here, fig. 4 only shows a part of the first display region a1, so fig. 4 does not indicate that three first signal lines corresponding to three rows of first pixels to be electrically connected are electrically connected only by 2 connection traces (e.g., 31 and 32 in fig. 4).

Therefore, the consistency of signals transmitted in the first signal lines corresponding to the first A pixels in the M rows can be ensured, and the difference of the signals transmitted on the electrically connected first signal lines is reduced, so that the display uniformity is improved, and the display effect is improved.

Certainly, when the first signal lines corresponding to the M rows of first pixels are electrically connected through the connection wires, 1 connection wire may be disposed between the first signal lines corresponding to the M rows of first pixels in the first display region.

For example, referring to fig. 3, for four first signal lines corresponding to two rows of first pixels to be electrically connected, the first signal lines corresponding to the first signal terminals having the same control function are electrically connected by only 1 connection trace (e.g., 30a and 30b in fig. 3). The arrangement position of the connection trace is not limited to that shown in fig. 3, and fig. 3 is only for explaining that the connection trace can implement the electrical connection of the first signal line corresponding to the first signal end having the same control function.

Therefore, the number of the wires connected and wired in the first display area can be reduced, and the complexity of the structure of the first display area is reduced, so that the manufacturing difficulty of the display panel is reduced, the manufacturing efficiency is improved, and the manufacturing yield of products is improved.

Optionally, in an embodiment of the present invention, the pixel includes a pixel circuit, and the pixel circuit includes a plurality of first signal terminals having different control functions, each of the first signal terminals being electrically connected to a corresponding one of the first signal lines;

each first pixel is electrically connected with a plurality of first signal lines;

the first signal lines corresponding to the first signal ends with the same control function in the M rows of first A pixels are electrically connected through the connecting wires.

For example, referring to fig. 3, the pixel circuit in each first a pixel has 2 first signal terminals of different control functions, S1 and S2, respectively, and each first signal terminal S1 is electrically connected to one first signal line, and each first signal terminal S2 is electrically connected to one first signal line, so that each first a pixel is electrically connected to 2 first signal lines.

Also, referring to fig. 3, taking two rows of first pixels labeled h1 and h2 as an example, the first signal line corresponding to the first signal terminal S1 of the first pixel in the first pixel row h1 is denoted by 10a1, the first signal line corresponding to the first signal terminal S2 of the first pixel in the first pixel row h1 is denoted by 10b1, the first signal line corresponding to the first signal terminal S1 of the first pixel in the first pixel row h2 is denoted by 10a2, and the first signal line corresponding to the first signal terminal S2 of the first pixel in the first pixel row h2 is denoted by 10b2, so that the first signal line 10a1 is electrically connected to the first signal line 10a2 through the connection trace 30a, and the first signal line 10b1 is electrically connected to the first signal line 10b2 through the connection trace 30b 2.

Therefore, accurate signals can be input into each first pixel to avoid abnormal display caused by driving errors caused by electric connection of the first signal wires with different control functions, so that the display panel can be driven normally and effectively, and the display panel can display normally.

Optionally, in the embodiment of the present invention, when the connection trace is set, the following setting may be performed:

the connecting wiring and the first signal wire are made of the same material and are arranged on the same layer;

and/or the connecting wire and the second signal wire are made of the same material and arranged on the same layer, and the connecting wire is electrically connected with the first signal wire through the via hole.

For example, as shown in fig. 5 to 7, wherein fig. 5 is a partial schematic view of two first a pixels adjacent in the column direction in fig. 3, and fig. 6 and 7 are two cross-sectional views taken along the x1-x2 direction in fig. 5, respectively.

Referring to fig. 6, the connecting trace 30a and the first signal line 10a2 electrically connected thereto are disposed in the same layer and are all disposed on the film layer where the gate G of the transistor TFT is located, so that the connecting trace 30a and the first signal line 10a2 electrically connected thereto can be directly contacted and electrically connected without disposing a through hole, and further effective electrical connection between the connecting trace 30a and the first signal line 10a2 electrically connected thereto can be achieved.

However, when the first a pixel corresponds to 2 first signal lines, as shown in fig. 5, then: the first signal line 10a1 and the first signal line 10a2 need to be electrically connected through the connection trace 30a, and the first signal line 10b1 and the first signal line 10b2 need to be electrically connected through the connection trace 30b, if the connection trace 30a and the connection trace 30b are both located on the same layer, the connection trace 30b and the first signal line 10a2 may be shorted, which further affects signal transmission on each first signal line, and finally affects the normal display function of the first pixel.

Therefore, taking fig. 5 as an example, when the first pixel corresponds to 2 first signal lines, different connecting traces are located at different layers, as shown in fig. 6, the connecting trace 30a and the first signal line 10a2 are disposed at the same layer, and the connecting trace 30b and the first signal line 10a2 are disposed at different layers and are disposed at the same layer as the second signal line 20, that is, the connecting trace 30b and the second signal line 20 are both located at a layer where the source S of the transistor TFT is located.

That is to say, when the first pixels correspond to a plurality of first signal lines, a part of the connecting wires are arranged on the same layer as the first signal lines, and the other parts of the connecting wires are arranged on the same layer as the second signal lines 20, so as to ensure effective transmission of signals, and further ensure that the first pixels are normally and effectively driven, and thus ensure that the first pixels can normally and effectively display.

Alternatively, referring to fig. 7, the connection trace 30a and the first signal line 10a2 electrically connected thereto are disposed in different layers, for example, the connection trace 30a and the second signal line 20 are disposed in the same layer, that is, the connection trace 30a and the second signal line 20 are both located on the film layer where the source S of the transistor TFT is located, at this time, the connection trace 30a and the first signal line 10a2 electrically connected thereto need to be electrically connected through a through hole (as shown in a dashed circle 3 in fig. 7), so as to ensure effective transmission of signals, and further ensure that the first a pixel is effectively driven.

Meanwhile, although the connection trace 30b overlaps the first signal line 10a2 as shown in fig. 5, the connection trace 30b and the second signal line 20 are disposed at the same layer, as shown in fig. 7, so that a short circuit between the connection trace 30b and the first signal line 10a2 can be avoided.

That is to say, when first pixel corresponds many first signal lines, all connect to walk the line and can set up with the layer, and all connect to walk the line and set up with the layer with the second signal line to guarantee the effective transmission of signal, and then guarantee that first pixel is effectively driven, thereby guarantee the normal demonstration in first display area.

Certainly, when the first pixel corresponds to 1 first signal line, each connection wire may be located in the same layer, that is, all of the connection wires are arranged in the same layer as the first signal line, or all of the connection wires are arranged in the same layer as the second signal line, and a diagram is not shown, so as to ensure that the connection wires can be in direct contact with the first signal line to realize electrical connection, and meanwhile, the structural complexity of the display panel is reduced, thereby simplifying the manufacturing process of the display panel.

(II) for the first B pixel:

optionally, in an embodiment of the present invention, the display panel further includes: a non-display area surrounding the display area;

the first signal line electrically connected with the first second pixel is provided with a first end, and the first end is positioned on one side of the display area close to the non-display area;

each first pixel is electrically connected with at least one first signal line, and the first ends of the first signal lines corresponding to the first B pixels in the M rows are electrically connected.

For example, as shown in fig. 8, and fig. 8 is a partial enlarged schematic view within a dashed line box 2 in fig. 1, only a part of the first second pixels is shown, and for a column of the first second pixels labeled R1, the column of the first second pixels located at the leftmost side of the display area a, and the first signal line corresponding to each row of the first second pixels has a first end at the leftmost end and the rightmost end. Taking the leftmost first terminal as an example, the first terminal of the first signal line corresponding to the first b pixel labeled Pb1 is denoted by D1, the first terminal of the first signal line corresponding to the first b pixel labeled Pb2 is denoted by D2, and the first terminal D1 of the first signal line corresponding to the first b pixel Pb1 is electrically connected to the first terminal D2 of the first signal line corresponding to the first b pixel Pb 2.

Specifically, the first end D1 of the first signal line corresponding to the first second pixel Pb1 and the first end D2 of the first signal line corresponding to the first second pixel Pb2 may be electrically connected through the wire 30c, wherein the arrangement of the film layer where the conductive 30c is located may be the same as the arrangement of the film layer where the trace is located, so as to simplify the structure of the display panel and reduce the manufacturing process of the display panel.

Therefore, the first ends of the first signal lines corresponding to the first second pixels in the M rows are electrically connected, so that the first pixels and the first second pixels are respectively identical to the arrangement mode of the first signal lines, the first pixels and the first second pixels can be driven in the same mode, the display uniformity of the first display area and the second display area is further ensured, and the display effect is improved.

Optionally, in an embodiment of the present invention, the pixel includes a pixel circuit, and the pixel circuit includes a plurality of first signal terminals having different control functions, each of the first signal terminals being electrically connected to a corresponding one of the first signal lines; each first pixel is electrically connected with a plurality of first signal lines;

the first ends of the first signal lines corresponding to the first signal ends with the same control function in the M rows of the first second pixels are electrically connected.

For example, as shown in fig. 8, each first b pixel is electrically connected to 2 first signal lines, wherein the first end of the first signal line corresponding to the S1 terminal of the first b pixel Pb1 is D1, the first end of the first signal line corresponding to the S2 terminal of the first b pixel Pb1 is D3, and the first end of the first signal line corresponding to the S1 terminal of the first b pixel Pb2 is D2, so that: the first end D1 of the first signal line corresponding to the S1 end of the first b pixel Pb1 is electrically connected to the first end D2 of the first signal line corresponding to the S1 end of the first b pixel Pb 2.

Therefore, effective transmission of signals can be guaranteed, the first second pixels can be driven normally and effectively, and the second display area can be displayed normally and effectively.

Optionally, in the embodiment of the present invention, a plurality of driving circuits are disposed in the non-display area, and the driving circuits are electrically connected to the first ends of the first signal lines corresponding to the M rows of the first second pixels, respectively.

For example, as shown in fig. 8, the first end D1 of the first signal line corresponding to the S1 terminal of the first b pixel Pb1 and the first end D2 of the first signal line corresponding to the S1 terminal of the first b pixel Pb2 are electrically connected to the driving circuit V1.

Therefore, one driving circuit can drive the first signal lines corresponding to the first second pixels in the M rows simultaneously, the number of the first signal lines penetrating through the photosensitive device setting area is reduced, and meanwhile, the first second pixels can be guaranteed to be effectively driven, and normal display of the second display area is guaranteed.

Specifically, in the embodiment of the present invention, each driving circuit is disposed on two opposite sides of the display area in the row direction;

the first end of the first signal line corresponding to each first second pixel is electrically connected with the driving circuit.

For example, as shown in fig. 8, the driving circuits V1 to V4 are all located in the leftmost non-display region, and the driving circuits V5 to V8 are all located in the rightmost non-display region. Further, since the first signal line corresponding to the S1 terminal of the first b pixel labeled Pb3 is denoted by 10a6, and the first signal line 10a6 has a first terminal (denoted by D4) at the leftmost side and a first terminal (denoted by D5) at the rightmost side, the following: the first end D4 of the first signal line 10a6 is electrically connected to the driving circuit V3, and the first end D5 of the first signal line 10a6 is electrically connected to the driving circuit V7.

That is, the first signal line penetrating the photo-sensing device setting region C has 2 first ends, so 2 first ends are all connected with the driving circuit, and the first signal line not penetrating the photo-sensing device setting region C has 1 first end, so 1 first end is connected with the driving circuit, to ensure that each second display region a2 can be normally and effectively driven, and simultaneously ensure the display uniformity of each second display region a2 and the first display region a1, and also can be favorable for reducing the number of the first signal lines penetrating the photo-sensing device setting region C, thereby improving the display effect while improving the light transmittance of the photo-sensing device setting region C.

Specifically, in the embodiment of the present invention, an orthogonal projection of the driving circuit on the light emitting surface of the display panel is a first projection, the first projection has a first length along the row direction and a second length along the column direction, and the first length is smaller than the second length.

The first ends of the first signal lines corresponding to the first B pixels in the M adjacent rows are electrically connected with the same driving circuit, so that the arrangement number of the driving circuits is reduced. Since the driving circuits are generally arranged in sequence from top to bottom along the column direction, when the number of driving circuits is reduced, the second length (e.g., L2 in fig. 8) of the driving circuits in the column direction can be made greater than the first length (e.g., L1 in fig. 8) in the row direction, which is favorable for reducing the occupied area of the driving circuits in the row direction, thereby being favorable for improving the screen occupation ratio and realizing the design of a narrow bezel.

To sum up, through the setting to first pixel and first second pixel, can be guaranteeing first pixel and first second pixel by effective drive, when improving the demonstration homogeneity of first display area and second display area, can also reduce the quantity that runs through the first signal line in the sensitization device setting area, make the luminousness that the sensitization device set up the region can improve nearly 20%, and then make the sensitization device can receive more light, when the sensitization device is the camera, can improve the shooting quality of camera greatly, thereby improve display device's performance.

Specifically, referring to a comparison diagram before and after the adjustment of the first signal line in the photosensitive device disposing area shown in fig. 9, (a) shows a diagram before the adjustment of the first signal line in the photosensitive device disposing area, and (b) shows a diagram after the adjustment of the first signal line in the photosensitive device disposing area.

In fig. (a), the total width of the plurality of first signal lines (e.g., 11 and 12) overlapping one second pixel in the photosensitive device disposing region is denoted by L3, and in fig. (b), the total width of the plurality of first signal lines (e.g., 11 and 12) overlapping one second pixel in the photosensitive device disposing region is denoted by L4, and it is apparent that L4 is smaller than L3.

In practical applications, L3 may be, but is not limited to, 49.1 micrometers, and L4 may be, but is not limited to, 18.5 micrometers, and obviously, by setting the first signal lines, the number of the first signal lines overlapping with one second pixel can be greatly reduced, and then the total width of the plurality of first signal lines overlapping with one second pixel is reduced, so as to reduce the light shielding area of the first signal lines, and improve the light transmittance of the light sensing device setting area.

In addition, in practical situations, in order to avoid the light from being diffracted at the gaps between the first signal lines and further avoid the performance of the photosensitive device from being adversely affected by the diffraction, a shielding structure (as shown by 60 in fig. 9) is usually provided, and the shielding structure 60 overlaps with the orthographic projection of the first signal lines on the light-emitting surface of the display panel, and the shielding structure 60 can shield the gaps between the first signal lines to avoid the diffraction.

Wherein, when the total width of the plurality of first signal lines overlapping one second pixel is large, the area of the shielding structure 60 disposed is large (as shown in (a) of fig. 9), and when the total width of the plurality of first signal lines overlapping one second pixel is small, the area of the shielding structure 60 disposed may be small (as shown in (b) of fig. 9).

So, through the reduction of the area of sheltering from the structure, can further reduce the area of sheltering from to light, improve the luminousness that photosensitive device set up regional C to improve photosensitive device's performance, improve display device's performance.

In this regard, the total width of the plurality of second signal lines 20 overlapping one second pixel is the same for the second signal lines 20, regardless of whether the first signal lines in the photosensitive device disposing region are adjusted or not, and is denoted by L5. In order to avoid diffraction of light rays at the gaps between the second signal lines 20, the second signal lines 20 may be arranged as follows:

part of the second signal lines and the source/drain electrodes in the transistors are made of the same material and are arranged in the same layer (as shown in fig. 6 and 7), and the rest of the second signal lines and the rest of the electrode layers are made of the same material and are arranged in the same layer, wherein the rest of the electrode layers can be: an electrode layer (not shown) between a source/drain of the transistor and the light emitting unit (wherein, the display panel in the embodiment of the present invention may be an electroluminescence display panel, and accordingly, the pixel includes a pixel circuit and the light emitting unit which are electrically connected), or other electrode layers (not shown); and two adjacent second signal lines of orthographic projection on the light-emitting surface of the display panel are arranged in different layers.

So set up:

on the one hand, the distance between two adjacent second signal lines in the same layer can be increased, short circuit between the adjacent second signal lines is avoided, effective transmission of signals is guaranteed, and therefore normal display of a display area is guaranteed.

On the other hand, because two adjacent second signal lines of the orthographic projection on the light-emitting surface of the display panel are arranged in different layers, the second signal line in one layer (such as a film layer where a source/drain electrode in a transistor is located) can shield a gap between the two adjacent second signal lines in the other layer (such as the rest electrode layers), namely, the gap between the second signal lines can be shielded through the second signal lines arranged in the different layers, so that a shielding structure (shown in fig. 9) is not required to be arranged, diffraction of light at the position of each second signal line can be avoided, the light transmittance of the photosensitive device arrangement area is improved, the complexity of the structure of the display panel is reduced, and the manufacturing process and the manufacturing difficulty of the display panel are simplified.

In practical implementation, in the embodiment of the present invention, the second signal line may be a data line;

the first signal line may be a gate line, and the driving circuit may be a gate driving circuit; and/or, the first signal line may be a light emitting control signal line, and the driving circuit may be a light emitting driving circuit.

That is, the first signal line may be only a gate line, and the driving circuit is a gate driving circuit. Or, the first signal line is only a light-emitting control signal line, and the driving circuit is a light-emitting driving circuit at this time. Alternatively, the first signal lines are gate lines and light emission control signal lines (as shown in fig. 9, 11 denotes a light emission control signal line, and 12 denotes a gate line), and in this case, the driving circuits are a gate driving circuit and a light emission driving circuit.

In order to input an effective signal into the second signal line and ensure that each pixel can be driven effectively, in an embodiment of the present invention, the display panel further includes: a multiplexer electrically connected to the second signal line, the multiplexer including a plurality of selection units, the selection units to:

outputting the second signals to the correspondingly connected second signal lines in a time-sharing manner, so that the second signal lines transmit the second signals to the pixels;

the selecting unit corresponds to W rows of pixels, and the number of the second signal lines correspondingly connected with the selecting unit is W M.

Specifically, each of the selection units may include a plurality of transistors, wherein the number of transistors included in the selection unit is the same as the number of corresponding second signal lines.

The display panel further includes control lines in the non-display region, and the number of the control lines is W × M.

For example, taking the connection relationship between a part of the first pixels in the first display region and the selection unit as an example, as shown in fig. 10, a schematic diagram of the connection relationship between the selection unit and the second signal line is shown, wherein the first signal lines 10 corresponding to the first pixels in adjacent 2 rows are electrically connected, each selection unit 51 corresponds to a column of the first pixels, and the number of the second signal lines 20 electrically connected to the first pixels in each column is 2, so each selection unit 51 corresponds to 2 second signal lines 20.

Also, as shown in fig. 10, 2 control lines (CK 1 and CK2, respectively) are further provided in the non-display region B, the selection unit 51 includes 2 transistors (T1 and T2, respectively), and the 2 transistors in the selection unit 51 can be controlled by the 2 control lines, respectively, so that signals in the data bus lines (e.g., S1 to S4 in fig. 10) can be outputted to the corresponding second signal lines 20 in a time-sharing manner.

For another example, taking the connection relationship between a part of the first pixels in the first display region and the selection unit as an example, as shown in fig. 11, another connection relationship between the selection unit and the second signal line is shown, in which the first signal lines 10 corresponding to the first pixels in 3 adjacent rows are electrically connected, each selection unit 51 corresponds to a column of the first pixels, and the number of the second signal lines 20 electrically connected to the first pixels in each column is 3, so each selection unit 51 corresponds to 3 second signal lines 20.

Also, as shown in fig. 11, 3 control lines (e.g., CK1, CK2, and CK3) are further provided in the non-display region B, the selection unit 51 includes 3 transistors (e.g., T3, T4, and T6), and the 3 transistors in the selection unit 51 can be controlled by the 3 control lines, respectively, so that signals in the data bus lines (e.g., S1 to S4 in fig. 11) can be outputted to the corresponding second signal lines 20 in a time-sharing manner.

Therefore, the multiplexer can input accurate and effective signals to the second signal lines through the setting of the multiplexer, so that the pixels can be driven normally and effectively, and the display panel can display normally.

Based on the same inventive concept, an embodiment of the present invention provides a display device, such as the schematic structural diagram of the display device shown in fig. 12, which may include: the display panel 100 and the photosensitive device 200 provided in the embodiment of the present invention;

the photosensitive device 200 is disposed in the photosensitive device disposing region C of the display panel 100.

Alternatively, the photosensitive device may be a camera or a fingerprint recognition device, and is not limited herein.

In a specific implementation, the display device may be: any product or component with a display function, such as a mobile phone (as shown in fig. 13), a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.

Based on the same inventive concept, an embodiment of the present invention provides a method for driving the display panel, which may include:

Optionally, in an embodiment of the present invention, when the display panel further includes a second signal line, the driving method further includes:

and the first pixels in the M rows input second signals sequentially through corresponding second signal lines.

Therefore, only one first pixel can be driven at the same time, so that the display panel has higher display resolution in a display picture, and the display panel has better display effect.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A display panel includes a display area;

the display area includes: a plurality of photosensitive device that arrange along the row direction set up the region, be located adjacent two photosensitive device sets up the first display area between the region, is located photosensitive device sets up regional keeping away from the second display area of one side of first display area and be a plurality of pixels that the array was arranged, the pixel includes: the display device comprises first pixels and second pixels, wherein the first pixels are located in a first display area and a second display area, the second pixels are located in a photosensitive device arrangement area, each pixel is used for displaying a picture, the density of the second pixels is smaller than that of the first pixels, and the densities of the first pixels in the first display area and the second display area are the same;

2. The display panel of claim 1, wherein the display panel further comprises: a plurality of second signal lines arranged in the row direction and extending in the column direction, wherein any two adjacent first pixels in the same first pixel column are electrically connected with different second signal lines, and the second signal lines electrically connected with different first pixel columns are different;

the number of the second signal lines electrically connected to the first pixels in the same column is M.

3. The display panel according to claim 2, wherein each of the first pixels is electrically connected to at least one of the first signal lines;

the first pixel includes: the first pixels are located in the first display area, connecting wires are arranged in the first display area, and the first signal lines corresponding to the first pixels in the M rows are electrically connected through the connecting wires.

4. The display panel according to claim 3, wherein the pixel includes a pixel circuit including a plurality of first signal terminals having different control functions, each of the first signal terminals being electrically connected to a corresponding one of the first signal lines;

each of the first pixels is electrically connected to a plurality of the first signal lines;

the first signal lines corresponding to the first signal ends with the same control function in the M rows of the first A pixels are electrically connected through the connecting wiring.

5. The display panel of claim 3, wherein the connecting trace and the first signal line are made of the same material and are disposed on the same layer;

and/or the connecting wire and the second signal wire are made of the same material and arranged on the same layer, and the connecting wire and the first signal wire are electrically connected through a through hole.

6. The display panel of claim 2, wherein the display panel further comprises: a non-display area surrounding the display area;

the first pixel includes: the first signal line electrically connected with the first second pixel is provided with a first end, and the first end is positioned on one side of the display area close to the non-display area;

7. The display panel according to claim 6, wherein the pixel includes a pixel circuit including a plurality of first signal terminals having different control functions, each of the first signal terminals being electrically connected to a corresponding one of the first signal lines; each of the first pixels is electrically connected to a plurality of the first signal lines;

the first ends of the first signal lines corresponding to the first signal ends with the same control function in the M rows of first second pixels are electrically connected.

8. The display panel according to claim 6, wherein a plurality of driving circuits are provided in the non-display region, and the driving circuits are electrically connected to the first ends of the first signal lines corresponding to the M rows of the first second pixels, respectively.

9. The display panel according to claim 8, wherein each of the driving circuits is disposed on opposite sides of the display area in the row direction;

10. The display panel of claim 8, wherein an orthographic projection of the driving circuit on a light emitting surface of the display panel is a first projection, the first projection having a first length along the row direction and a second length along the column direction, the first length being less than the second length.

11. The display panel according to claim 8, wherein the second signal line is a data line;

the first signal line is a grid line, and the driving circuit is a grid driving circuit; and/or the first signal line is a light-emitting control signal line, and the driving circuit is a light-emitting driving circuit.

12. The display panel of claim 2, wherein the display panel further comprises: a multiplexer electrically connected to the second signal line, the multiplexer comprising a plurality of selection units for:

outputting a second signal to each correspondingly connected second signal line in a time-sharing manner, so that the second signal line transmits the second signal to the pixel;

the selection unit corresponds to W columns of pixels, and the number of the second signal lines correspondingly connected with the selection unit is W x M.

13. The display panel according to any one of claims 1 to 12, wherein two photosensitive device disposition regions are provided.

14. A display device, comprising: the display panel and the photosensitive device according to any one of claims 1 to 13;

15. A driving method of the display panel according to any one of claims 1 to 13, comprising:

16. The driving method according to claim 15, wherein when the display panel further includes a second signal line, the driving method further comprises:

and the M rows of first pixels successively input second signals through the corresponding second signal lines.