CN114038408B

CN114038408B - Display panel, driving method thereof and display device

Info

Publication number: CN114038408B
Application number: CN202111402316.XA
Authority: CN
Inventors: 刘大超; 曾勉; 孙亮
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2023-02-24
Anticipated expiration: 2041-11-23
Also published as: CN114038408A

Abstract

The embodiment of the invention discloses a display panel, a driving method thereof and a display device; the display panel comprises a plurality of pixel units, a plurality of scanning lines and a plurality of data lines, wherein the scanning lines and the data lines are positioned at the periphery of the pixel units, and each scanning line comprises: a plurality of first extension sections extending along the arrangement direction of the data lines; a plurality of second extension segments extending along a direction perpendicular to the arrangement direction of the data lines, wherein two adjacent first extension segments are connected through one first extension segment, and each first extension segment spans at least two pixel units; according to the invention, the first extension section and the second extension section which are perpendicular to each other are sequentially connected, the first extension section spans at least two pixel units, and at least two rows of pixel units are simultaneously controlled by one scanning line, so that normal display is realized, the wiring area of the scanning signal line is reduced, the area of a transparent display area is increased, and the transparency of the display panel is increased.

Description

Display panel, driving method thereof and display device

Technical Field

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

Background

In recent years, with continuous progress of display technologies, transparent display schemes also obtain deep research of people in the display industry, and in current design schemes, a GOA signal metal wire usually penetrates through a transparent display area to be designed, and occupies a part of the area of the transparent area, so that the transparency of a display panel is reduced.

Therefore, a display panel, a driving method thereof and a display device are needed to solve the above technical problems.

Disclosure of Invention

The invention provides a display panel, a driving method thereof and a display device, which can solve the technical problem that the transparency of the display panel is reduced because the existing GOA signal metal routing usually occupies a part of the area of a transparent area through the transparent display area.

The invention provides a display panel, which comprises a plurality of pixel units, a plurality of scanning lines and a plurality of data lines, wherein the plurality of scanning lines and the plurality of data lines are positioned at the periphery of the plurality of pixel units; wherein each of the scan lines comprises:

a plurality of first extension sections extending in the arrangement direction of the data lines;

a plurality of second extension segments extending in a direction perpendicular to the arrangement direction of the data lines, adjacent two of the first extension segments being connected by one of the second extension segments;

wherein each of the first extension segments spans at least two of the pixel cells.

Preferably, one first extension segment corresponds to two pixel units; the scanning line further comprises blank extension sections parallel to the second extension sections, and in a direction perpendicular to the arrangement direction of the data lines, one second extension section corresponds to two pixel units, one blank extension section corresponds to two pixel units, and one second extension section and one blank extension section are alternately arranged.

Preferably, the display panel includes a first metal layer, a second metal layer, and an interlayer insulating layer between the first metal layer and the second metal layer; the first metal layer comprises any one of the data lines, the second metal layer comprises any one of the scanning lines, and the first extending section and the data lines are arranged in a non-overlapping mode in the top view direction of the display panel.

Preferably, the first metal layer further includes a plurality of data power lines arranged in parallel with the data lines; the second metal layer further comprises a plurality of scanning power lines arranged in parallel with the scanning lines.

Preferably, the display panel further includes a third metal layer located between the first metal layer and the second metal layer, and the interlayer insulating layer includes a first insulating layer located between the first metal layer and the third metal layer and a second insulating layer located between the second metal layer and the third metal layer; the third metal layer comprises a plurality of reset signal lines and a plurality of light-emitting control signal lines which are arranged in parallel with the scanning lines.

Preferably, in a top view direction of the display panel, in an arrangement direction of the data lines, the first extension, the data lines, the reset signal lines, the emission control signal lines, the data power lines, and the scan power lines are disposed so as not to overlap with each other.

Preferably, the data line includes a plurality of sub-lines arranged in parallel, the pixel unit includes a plurality of sub-pixels, and one sub-line corresponds to one sub-pixel.

Preferably, the display panel further includes a gate driver connected to both ends of any one of the scan lines.

The present invention also provides a driving method of a display panel, including any one of the above display panels, the driving method of the display panel including:

writing pixel signals into the Nth scanning line to start at least two rows of pixel units corresponding to the Nth scanning line, and writing reset signals into the (N + 1) th scanning line to reset at least two rows of pixel units corresponding to the (N + 1) th scanning line.

The invention also provides a display device, which comprises the display panel and the device main body, wherein the display panel and the device main body are combined into a whole

The embodiment of the invention comprises the following steps: according to the invention, the first extension section and the second extension section which are perpendicular to each other are sequentially connected, the first extension section spans at least two pixel units, and at least two rows of pixel units are simultaneously controlled by one scanning line, so that normal display is realized, the wiring area of the scanning signal line is reduced, the area of a transparent display area is increased, and the transparency of the display panel is increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic top view illustrating a first structure of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic top view of a portion of a second structure of a display panel according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a third structure of a display panel according to an embodiment of the present invention;

FIG. 4 is a schematic view of FIG. 1 taken along A1A 2;

FIG. 5 is a schematic view of FIG. 1 taken along section B1B 2;

FIG. 6 is a schematic view of FIG. 1 taken along section C1C 2;

FIG. 7 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention. Furthermore, it should be understood that the detailed description herein is intended only to illustrate and explain the present invention, and is not intended to limit the present invention. In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means upper and lower in the actual use or operation of the device, particularly in the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

In recent years, with continuous progress of display technology, transparent display schemes also obtain intensive research of display industry staff, and in current design schemes, a GOA signal metal routing usually penetrates through a transparent display area to occupy a part of transparent area, so that the transparency of a display panel is reduced.

Referring to fig. 1 to 6, an embodiment of the invention provides a display panel 100, including a plurality of pixel units 200, and a plurality of scan lines 300 and a plurality of data lines 400 located at the periphery of the plurality of pixel units 200; wherein each of the scan lines 300 comprises:

a plurality of first extension segments 310 extending along the arrangement direction of the data lines 400;

a plurality of second extension segments 320 extending in a direction perpendicular to the arrangement direction of the data lines 400, and two adjacent first extension segments 310 are connected by one second extension segment 320;

wherein each of the first extension segments 310 spans at least two of the pixel units 200.

According to the invention, the first extension section and the second extension section which are perpendicular to each other are sequentially connected, the first extension section spans at least two pixel units, and at least two rows of pixel units are simultaneously controlled by one scanning line, so that normal display is realized, the wiring area of the scanning signal line is reduced, the area of a transparent display area is increased, and the transparency of the display panel is increased.

The technical solution of the present invention will now be described with reference to specific embodiments.

In this embodiment, the display panel 100 may be any one of a Mini-LED, a Micro-LED, and an AMOLED, and the Micro-LED is taken as an example for description below.

In this embodiment, the display panel 100 includes a plurality of pixel units 200, the display panel 100 may be in an RGB three-color mode or an RGBW four-color mode, and the following description takes the RGB three-color mode as an example, and the pixel units 200 include three RGB sub-pixels.

In some embodiments, the display panel 100 includes a substrate, a driving line layer on the substrate, and a light emitting function layer on the driving line layer.

In some embodiments, referring to fig. 1, the driving line layer includes a plurality of scan lines 300 and a plurality of data lines 400 located at the periphery of a plurality of pixel units 200. The data lines 400 are arranged along a first direction, the scan lines 300 are arranged along a second direction, the Y-axis direction is the first direction, the X-axis direction is the second direction, and the three RGB sub-pixels can be arranged along the second direction, wherein the scan lines 300 are wavy lines, which are only convenient for viewing and distinguishing, but not actual line types, and thus, the description is given.

In some embodiments, referring to fig. 1, each of the scan lines 300 includes: a plurality of first extension sections 310 extending in the arrangement direction of the data lines 400; a plurality of second extension segments 320 extending in a direction perpendicular to the arrangement direction of the data lines 400, and two adjacent first extension segments 310 are connected by one second extension segment 320; wherein each of the first extension segments 310 spans at least two of the pixel units 200.

Each of the first extension segments 310 corresponds to at least two of the pixel units 200, in fig. 1, for example, two of the pixel units 200 are used, it can be easily understood that three, four or more of the pixel units 200 are used, the first extension segments 310 are arranged along the first direction, the second extension segments 320 are arranged along the second direction, the first extension segments 310 and the second extension segments 320 are alternately connected and form a serpentine shape, so that the routing area of the scanning signal lines is reduced, at least two rows of pixel units 200 are simultaneously controlled by one scanning line 300, normal display is realized, the area of the transparent display area is increased, and the transparency of the display panel 100 is increased.

In some embodiments, referring to fig. 1, one first extension 310 corresponds to two pixel units 200; the scan line 300 further includes blank extension sections 330 parallel to the second extension sections 320, and in a direction perpendicular to the arrangement direction of the data lines 400, one of the second extension sections 320 corresponds to two of the pixel units 200, one of the blank extension sections 330 corresponds to two of the pixel units 200, and one of the second extension sections 320 and one of the blank extension sections 330 are alternately disposed.

The scanning line 300 controls two rows of pixel units 200, the relation between transparency and refresh rate can be balanced, light passes through the blank extension section 330, the area of a transparent display area can be increased, the transparency of the display panel 100 is increased, and normal display is realized by controlling two rows of pixel units 200 through one scanning line 300.

In some embodiments, referring to fig. 3 and fig. 6, the display panel 100 includes a first metal layer 510, a second metal layer 520, and an interlayer insulating layer 540 between the first metal layer 510 and the second metal layer 520; the first metal layer 510 includes any one of the data lines 400, the second metal layer 520 includes any one of the scan lines 300, and the first extending segment 310 is disposed in a non-overlapping manner with the data line 400 in a top view direction of the display panel 100.

The scan lines 300 and the data lines 400 are located at different layers, so that routing jumpers are avoided, and meanwhile, in the top view direction of the display panel 100, there is no overlapping area between the first extension sections 310 and the data lines 400, so that the parasitic capacitance between the scan lines 300 and the data lines 400 can be reduced, and the display effect is improved.

In some embodiments, referring to fig. 3, 4 and 6, the first metal layer 510 further includes a plurality of data power lines 401 disposed parallel to the data lines 400; the second metal layer 520 further includes a plurality of scan power lines 301 disposed in parallel with the scan lines 300.

A data power line 401 may be added to the first metal layer 510, and a scan power line 301 may be added to the second metal layer 520, where the data power line 401 and the scan power line 301 supply power to the pixel unit 200, and meanwhile, the power lines are arranged in parallel with the metal lines of their respective film layers without using any jumper.

In some embodiments, referring to fig. 3, fig. 5, and fig. 6, the display panel 100 further includes a third metal layer 530 located between the first metal layer 510 and the second metal layer 520, and the interlayer insulating layer 540 includes a first insulating layer 541 located between the first metal layer 510 and the third metal layer 530, and a second insulating layer 542 located between the second metal layer 520 and the third metal layer 530; the third metal layer 530 includes a plurality of reset signal lines 302 and a plurality of light-emitting control signal lines 303 parallel to the scan lines 300.

Three metal layers are required to carry out layered arrangement on various complex signal lines, a reset signal line 302 (VI) and a light-emitting control signal line 303 (EM) are arranged in the middle layer, the signal lines with control functions are distributed between the data line 400 and the scanning line 300, connection of related signal lines is facilitated, light emission control of each pixel unit 200 and writing of reset signals into each sub-pixel are achieved, the reset signal line 302 is used for resetting anodes and driving Diodes (DTFT) of the sub-pixels, and the light-emitting control signal line 303 is used for controlling when the sub-pixels emit light.

In some embodiments, referring to fig. 3, the display panel further includes a third insulating layer 543 disposed on a side of the first metal layer 510 away from the first insulating layer 541.

In some embodiments, in a top view direction of the display panel 100, in an arrangement direction of the data lines 400, the first extension 310, the data lines 400, the reset signal lines 302, the light emitting control signal lines 303, the data power lines 401, and the scan power lines 301 are disposed non-overlapping with each other.

Each signal line is located at a different layer, so that a wiring jumper is avoided, and meanwhile, in the top view direction of the display panel 100, each different signal line of the type has no overlapping area, so that parasitic capacitance among different types of signal lines can be reduced, and the display effect is improved.

In some embodiments, the data line 400 includes a plurality of sub-lines arranged in parallel, and the pixel unit 200 includes a plurality of sub-pixels, and one sub-line corresponds to one sub-pixel.

Referring to fig. 4 and 6, taking the pixel unit 200 includes three RGB sub-pixels as an example, one data line 400 includes three sub-lines, which respectively correspond to the three RGB sub-pixels in the pixel unit 200, and in the drawings, the sub-lines are represented by a red sub-line 410, a green sub-line 420, and a blue sub-line 430.

In some embodiments, referring to fig. 6, in a top view direction of the display panel 100, in an arrangement direction of the data lines 400, the first extension segment 310, the sub line, the reset signal line 302, the light-emitting control signal line 303, the data power line 401, and the scan power line 301 are disposed in a non-overlapping manner.

The signal lines of different types have no overlapping area, so that the parasitic capacitance between the signal lines of different types can be reduced, and the display effect is improved.

In some embodiments, the display panel 100 further includes a gate driver 600 connected to two ends of any one of the scan lines 300.

The gate driver 600 is configured to write a driving signal into the scan line 300 and further write a signal into each pixel unit 200 and each sub-pixel, so as to implement normal display driving, and control at least two rows of pixel units 200 through one scan line 300, so as to reduce the routing area of the scan signal line, improve the area of the transparent display region, and increase the transparency of the display panel 100 while implementing normal display.

In some embodiments, referring to fig. 2, the pixel units 200 corresponding to one of the scan lines 300 are a row of pixels, and the first metal layer 510 further includes a reset switch line 304 disposed parallel to the scan line 300.

The reset switch line 304 is provided in parallel with the scan line 300, and the reset switch line 304 is used as a switch of the reset signal line 302, and is connected to the pixels of the next row group in addition to the pixels of the current row group, so as to perform initial reset for the pixels of the next row group.

In some embodiments, referring to fig. 6, the reset switch line 304 is disposed non-overlapping with other types of wires in the top view direction of the display panel 100.

In some embodiments, the display panel 100 is exemplified by a Micro-LED, the light emitting functional layer includes a positive electrode, a negative electrode, and a light emitting unit connecting the positive electrode and the negative electrode, and the light emitting unit includes the Micro-LED.

In some embodiments, the display panel 100 further includes a driving circuit board located at the bottom of the display panel 100, and the data line 400 is electrically connected to the driving circuit board.

Referring to fig. 7, an embodiment of the present invention further provides a driving method of a display panel 100, including the display panel 100 as described above, where the driving method of the display panel 100 includes:

s100, writing a pixel signal into the nth scan line 300 to start at least two rows of pixel units 200 corresponding to the nth scan line 300, and writing a reset signal into the (N + 1) th scan line 300 to reset at least two rows of pixel units 200 corresponding to the (N + 1) th scan line 300.

S100, writing a pixel signal into the nth scan line 300 to start at least two rows of pixel units 200 corresponding to the nth scan line 300, and writing a reset signal into the (N + 1) th scan line 300 to reset at least two rows of pixel units 200 corresponding to the (N + 1) th scan line 300, please refer to fig. 2.

In some embodiments, referring to fig. 1, the driving line layer includes a plurality of scan lines 300 and a plurality of data lines 400 located at the periphery of a plurality of pixel units 200. The data lines 400 are arranged in a first direction, the scan lines 300 are arranged in a second direction, the Y-axis direction is the first direction, the X-axis direction is the second direction, and the three RGB sub-pixels may be arranged in the second direction.

In some embodiments, referring to fig. 3 and 6, the display panel 100 includes a first metal layer 510, a second metal layer 520, and an interlayer insulating layer 540 disposed between the first metal layer 510 and the second metal layer 520; the first metal layer 510 includes any one of the data lines 400, the second metal layer 520 includes any one of the scan lines 300, and the first extending segment 310 is disposed in a non-overlapping manner with the data line 400 in a top view direction of the display panel 100.

In some embodiments, referring to fig. 3, fig. 5, and fig. 6, the display panel 100 further includes a third metal layer 530 located between the first metal layer 510 and the second metal layer 520, and the interlayer insulating layer 540 includes a first insulating layer 541 located between the first metal layer 510 and the third metal layer 530, and a second insulating layer 542 located between the second metal layer 520 and the third metal layer 530; the third metal layer 530 includes a plurality of reset signal lines 302 and a plurality of light-emitting control signal lines 303 arranged parallel to the scan lines 300.

In some embodiments, referring to fig. 3, the display panel further includes a third insulating layer 543 on a side of the first metal layer 510 away from the first insulating layer 541.

In some embodiments, in a top view direction of the display panel 100, in an arrangement direction of the data lines 400, the first extension 310, the data lines 400, the reset signal lines 302, the light emission control signal lines 303, the data power lines 401, and the scan power lines 301 are disposed non-overlapping with each other.

In some embodiments, the data line 400 includes a plurality of sub-lines arranged in parallel, and the pixel unit 200 includes a plurality of sub-pixels, and one of the sub-lines corresponds to one of the sub-pixels.

Referring to fig. 4 and 6, taking the pixel unit 200 including three RGB sub-pixels as an example, one data line 400 includes three sub-lines, which respectively correspond to the three RGB sub-pixels in the pixel unit 200, and in the figure, the sub-lines are represented by a red sub-line 410, a green sub-line 420, and a blue sub-line 430.

In some embodiments, referring to fig. 6, in a top view direction of the display panel 100, in an arrangement direction of the data lines 400, the first extending segments 310, the sub lines, the reset signal lines 302, the light emitting control signal lines 303, the data power lines 401, and the scan power lines 301 are disposed non-overlapping with each other.

In some embodiments, step S100 comprises:

s110, writing a pixel signal into the nth scan line 300 by using the gate driver 600, so as to start at least two rows of pixel units 200 corresponding to the nth scan line 300.

S120, the reset signal line 302 of the (N + 1) th scan line 300 is turned on by the reset switch line 304.

S130, writing a reset signal into the (N + 1) th scan line 300 by using the reset signal line 302, so as to reset at least two rows of pixel units 200 corresponding to the (N + 1) th scan line 300.

When the pixel signal is written into the nth scanning line 300, the pixel signal sequentially passes through the three RGB sub-pixels in each pixel unit 200.

Referring to fig. 8, an embodiment of the present invention further provides a display device 10, including any one of the display panels 100 and the device body 20, where the display panel 100 and the device body 20 are combined into a whole.

Please refer to any one of the embodiments of the display panel 100 and fig. 1 to 6, which will not be described herein.

In this embodiment, the device main body 20 may include a middle frame, a sealant, and the like, and the device main body 20 may be a display terminal such as a mobile phone and a tablet, which is not limited herein.

The embodiment of the invention discloses a display panel, a driving method thereof and a display device; the display panel comprises a plurality of pixel units, a plurality of scanning lines and a plurality of data lines, wherein the scanning lines and the data lines are positioned at the periphery of the pixel units, and each scanning line comprises: a plurality of first extension sections extending in the arrangement direction of the data lines; a plurality of second extension segments extending along a direction perpendicular to the arrangement direction of the data lines, wherein two adjacent first extension segments are connected through one first extension segment, and each first extension segment spans at least two pixel units; according to the invention, the first extension section and the second extension section which are perpendicular to each other are sequentially connected, the first extension section spans at least two pixel units, and at least two rows of pixel units are simultaneously controlled by one scanning line, so that normal display is realized, the wiring area of the scanning signal line is reduced, the area of a transparent display area is increased, and the transparency of the display panel is increased.

The display panel, the driving method thereof, and the display device provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A display panel is characterized by comprising a plurality of pixel units, a plurality of scanning lines and a plurality of data lines, wherein the scanning lines and the data lines are positioned at the periphery of the pixel units; wherein each of the scan lines comprises:

each first extension section spans at least two pixel units, one first extension section corresponds to two pixel units, the scanning line further comprises blank extension sections parallel to the second extension sections, one second extension section corresponds to two pixel units, one blank extension section corresponds to two pixel units, and one second extension section and one blank extension section are alternately arranged in the direction perpendicular to the arrangement direction of the data lines.

2. The display panel according to claim 1, wherein the display panel comprises a first metal layer, a second metal layer, and an interlayer insulating layer between the first metal layer and the second metal layer;

the first metal layer comprises any one of the data lines, the second metal layer comprises any one of the scanning lines, and the first extending section and the data lines are arranged in a non-overlapping mode in the top view direction of the display panel.

3. The display panel according to claim 2, wherein the first metal layer further comprises a plurality of data power lines arranged in parallel with the data lines;

the second metal layer further comprises a plurality of scanning power lines arranged in parallel with the scanning lines.

4. The display panel according to claim 3, wherein the display panel further comprises a third metal layer between the first metal layer and the second metal layer, and wherein the interlayer insulating layer comprises a first insulating layer between the first metal layer and the third metal layer and a second insulating layer between the second metal layer and the third metal layer;

the third metal layer comprises a plurality of reset signal lines and a plurality of light-emitting control signal lines which are arranged in parallel with the scanning lines.

5. The display panel according to claim 4, wherein the first extension, the data line, the reset signal line, the emission control signal line, the data power supply line, and the scan power supply line are disposed in a non-overlapping manner with respect to an arrangement direction of the data lines in a top view direction of the display panel.

6. The display panel according to claim 1, wherein the data line includes a plurality of sub-lines arranged in parallel, the pixel unit includes a plurality of sub-pixels, and one of the sub-lines corresponds to one of the sub-pixels.

7. The display panel according to claim 1, wherein the display panel further comprises a gate driver connected to both ends of any one of the scanning lines.

8. A driving method of a display panel comprising the display panel according to any one of claims 1 to 7, the driving method of the display panel comprising:

9. A display device comprising the display panel according to any one of claims 1 to 7 and a device main body, wherein the display panel is integrated with the device main body.