CN107765487B - Display device - Google Patents

Display device Download PDF

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Publication number
CN107765487B
CN107765487B CN201711037370.2A CN201711037370A CN107765487B CN 107765487 B CN107765487 B CN 107765487B CN 201711037370 A CN201711037370 A CN 201711037370A CN 107765487 B CN107765487 B CN 107765487B
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display
display panel
data signal
pixels
display device
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CN107765487A (en
Inventor
欧阳珺婷
席克瑞
崔婷婷
林柏全
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Wuhan Tianma Microelectronics Co Ltd
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Shanghai Tianma AM OLED Co Ltd
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Publication of CN107765487A publication Critical patent/CN107765487A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention discloses a display device, which comprises at least two display panels and a driving chip, wherein the display panels and the driving chip are arranged along a first direction; the driving chip is positioned at any side of all the display panels in the first direction; the display device further includes: a plurality of data signal lines extending along a first direction, each of the data signal lines being connected to the driving chip; each display panel is connected to at least part of the data signal lines; each display panel includes: the grid driving circuits are distributed along a first direction; the display panel comprises a plurality of pixels, a plurality of pixel array units and a plurality of pixel array units, wherein the pixels of each display panel are distributed in an array along a first direction and a second direction perpendicular to the first direction; each pixel of each display panel is connected to a corresponding gate driving circuit. Because a plurality of display panels share one driving chip to provide data signals, the display panels except the display panel adjacent to the driving chip do not need to reserve the space for binding the chip, more space is used for displaying, and the screen occupation ratio of the display panels is further improved.

Description

Display device
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device.
Background
In recent years, the internet and the electronics industry have rapidly developed, and mobile terminals, such as: electronic devices such as smart phones, tablet computers, electronic books, or smart watches play an increasingly important role in the life of people. The electronic equipment can acquire information anytime and anywhere and process various things in life of workers. Meanwhile, people also put forward higher requirements on the viewing experience of electronic equipment such as mobile phones, and therefore concepts such as 'no frame', 'full screen' and the like are also put forward. The larger screen occupation ratio brings more excellent visual experience to users and can display more information, so that the pursuit of the larger screen occupation ratio becomes the mainstream development trend of products such as electronic equipment.
However, the screen pixels of electronic devices such as mobile phones require driving of chips, and in the manufacturing process, Bonding areas (Bonding) or flexible circuits for Bonding the chips are inevitably required to be arranged on the upper side or the lower side of the screen. The area can only be reduced as much as possible, and due to the limitation of the manufacturing process, the area occupies a part of the space of the screen, so that the screen occupation ratio can not be further improved, and the display effect of the full screen cannot be achieved.
Disclosure of Invention
The embodiment of the invention provides a display device, which is used for further improving the screen occupation ratio.
In a first aspect, an embodiment of the present invention provides a display device, including: at least two display panels and driving chips arranged along a first direction; the driving chip is positioned at any side of all the display panels in the first direction;
the display device further includes: a plurality of data signal lines extending in the first direction, each of the data signal lines being connected to the driving chip; each display panel is connected with at least part of the data signal lines;
each of the display panels includes: the grid driving circuits are distributed along the first direction;
each of the display panels includes: the pixels of each display panel are distributed in an array along the first direction and a second direction perpendicular to the first direction; each pixel of each display panel is connected to the corresponding gate driving circuit.
In a possible implementation manner, in the display device provided in the embodiment of the present invention, each of the display panels shares the same flexible substrate;
the flexible substrate base plate is provided with a bending part between two adjacent display panels;
the display surfaces of the display panels are planes, and the display surfaces of two adjacent display panels are not on the same plane.
In a possible implementation manner, in the display device provided in the embodiment of the present invention, the number of pixels arranged along the second direction of each of the display panels is equal;
the number of the data signal lines is equal to the number of the pixels arranged along the second direction, and each column of the pixels arranged along the first direction shares one data signal line.
In a possible implementation manner, in the display device provided in the embodiment of the present invention, at least two adjacent pixels in at least one of the display panels form a pixel group, and the arrangement structures of the pixels in each of the pixel groups are the same;
each of the pixel groups is displayed only by pixels located at the same position.
In a possible implementation manner, in the display device provided in an embodiment of the present invention, the display panel includes: a first display panel having a maximum number of pixels arranged in the second direction;
the number of the data signal lines is equal to the number of the pixels arranged along the second direction of the first display panel;
each row of pixels arranged along the first direction of the first display panel is respectively connected with one data signal line;
and pixels of each column of the display panels except the first display panel and arranged along the first direction share one data signal line.
In a possible implementation manner, in the display device provided in an embodiment of the present invention, the display panel includes: a second display panel having a minimum number of pixels arranged in the second direction;
the number of the data signal lines is equal to the number of pixels arranged along the second direction of the second display panel;
the display device further includes: a plurality of shunts between the second display panel and an adjacent display panel;
each row of pixels arranged along the first direction of the second display panel is respectively connected with one data signal line;
each data signal line is respectively connected with the input end of one splitter, and the output end of the splitter is connected with a plurality of expanded data signal lines;
and each column of pixels of the display panels except the second display panel, which are arranged along the first direction, is respectively connected with one extended data signal line.
In a possible implementation manner, in the above display device provided in an embodiment of the present invention, the display panel is an organic light emitting display panel or an electronic paper display panel.
In a possible implementation manner, in the above display device provided by the embodiment of the present invention, the display panel includes a third display panel whose display mode is an organic light emitting display mode;
the third display panel includes: the pixel circuits are connected with the pixels in a one-to-one correspondence mode, and the low-level signal source is connected with the low-level signal end of each pixel circuit;
the low-level signal source is used for outputting a low-level signal to a low-level signal end of each pixel circuit and controlling each corresponding pixel to emit light; and outputting a high-level signal to the low-level signal end of each pixel, and controlling each corresponding pixel to be closed.
In a possible implementation manner, in the above display device provided by the embodiment of the present invention, the display panels included in the display device are all organic light emitting display panels.
In a possible implementation manner, in the display device provided in an embodiment of the present invention, the display device further includes: the display panels are covered on the surface of the support; wherein the content of the first and second substances,
the support comprises at least two continuous surfaces, each of which is provided with only one display panel.
In a possible implementation manner, in the above display device provided in an embodiment of the present invention, the support is a rectangular parallelepiped structure, and the display device includes three display panels; wherein the content of the first and second substances,
the display surface of the display panel farthest from the driving chip in the first direction is used as a main display surface, the display surface of the display panel positioned in the middle is used as a display surface of a side surface or a bottom surface, and the display surface of the display panel adjacent to the driving chip is used as a display surface of a back surface.
In a possible implementation manner, in the display device provided in the embodiment of the present invention, a resolution of the display panel farthest from the driving chip in the first direction is greater than resolutions of the remaining two display panels.
The invention has the following beneficial effects:
the display device provided by the embodiment of the invention comprises at least two display panels and a driving chip, wherein the display panels and the driving chip are arranged along a first direction; the driving chip is positioned at any side of all the display panels in the first direction; the display device further includes: a plurality of data signal lines extending along a first direction, each of the data signal lines being connected to the driving chip; each display panel is connected to at least part of the data signal lines; each display panel includes: the grid driving circuits are vertically distributed along a first direction; each display panel includes: the display panel comprises a plurality of pixels, a plurality of pixel array units and a plurality of pixel array units, wherein the pixels of each display panel are distributed in an array along a first direction and a second direction perpendicular to the first direction; each pixel of each display panel is connected to a corresponding gate driving circuit. Because a plurality of display panels share one driving chip to provide data signals, the display panels adjacent to the driving chip are only required to be reserved for binding the non-display space of the driving chip, and other display panels do not need to be provided with the reserved space, so that the space of the display panels can be used for displaying, and the screen occupation ratio of the display panels is further improved.
Drawings
Fig. 1 is a schematic top view of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a display device according to an embodiment of the present invention;
fig. 3 is a second schematic side view of a display device according to an embodiment of the invention;
fig. 4 is a third schematic side view of a display device according to an embodiment of the invention;
fig. 5a is a second schematic top view of a display device according to an embodiment of the present invention;
fig. 5b is a third schematic top view of a display device according to an embodiment of the present invention;
fig. 6 is a fourth schematic view illustrating a top view structure of a display device according to an embodiment of the present invention;
fig. 7a is a fifth schematic view of a top view structure of a display device according to an embodiment of the present invention;
FIG. 7b is a sixth schematic diagram illustrating a top view of a display device according to an embodiment of the present invention;
fig. 8 is a seventh schematic diagram illustrating a top view structure of a display device according to an embodiment of the present invention;
FIG. 9 is a circuit diagram of a pixel according to an embodiment of the present invention;
fig. 10 is an eighth schematic top view of a display device according to an embodiment of the present invention;
fig. 11 is a fourth schematic side view of a display device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a display device, which is used for further improving the screen occupation ratio.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words expressing the position and direction described in the present invention are illustrated in the accompanying drawings, but may be changed as required and still be within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
Hereinafter, a display device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in fig. 1, a display device provided in an embodiment of the present invention includes: at least two display panels 11 and driving chips 12 arranged in a first direction X1; the driving chips 12 are located on either side of all the display panels 11 in the first direction X1. Taking the display device shown in fig. 1 as an example, the display device includes two display panels 11 arranged along a first direction X1, and the display device includes only one driving chip 12 disposed at an end of the display device in the first direction X1, i.e., at either side of all the display panels 11; as shown in fig. 1, the driving chip 12 may be disposed at the bottom end of the two display panels, or the driving chip 12 may be disposed at the top end of the two display panels, which is not limited herein. In practical applications, the display device may further include three display panels, four display panels, and the like, and if the display panels are all arranged along the same direction, the driving chip may be disposed at an end of the display device in the same direction along which the display panels are arranged.
As shown in fig. 1, the display device further includes: a plurality of data signal lines 13 extending in a first direction X1, each data signal line 13 being connected to the driving chip 12; each display panel 11 is connected to at least a part of the data signal lines 13.
As shown in fig. 1, each display panel 11 includes: gate driving circuits 111 distributed along the first direction X1; further, each display panel 11 further includes: a plurality of pixels p, each of the pixels p of each of the display panels 11 being arranged in an array along a first direction X1 and a second direction X2 perpendicular to the first direction X1; each pixel p of each display panel 11 is connected to a corresponding gate drive circuit 111.
In practical application, the display panel is driven and displayed by the driving chip, and therefore, a space for binding the chip or the flexible circuit is reserved for the driving chip at the edge position of the display panel, so that pixels cannot be arranged in the space of the display panel, display cannot be performed, and the occupied screen is small. In view of this, in the embodiment of the invention, at least two display panels 11 and the driving chip 12 are arranged along the same direction (i.e. the first direction X1), and the data signal lines 13 connected to the driving chip are passed through the display panels to provide data signals for the display panels, so that the driving chip 12 can be used to drive a plurality of display panels simultaneously. Therefore, the display panel which is not adjacent to the driving chip 12 does not need to be provided with a binding area in the display panel any more, and pixels can be arranged in the binding area for displaying, so that the screen occupation ratio of the display panel can be effectively improved. In addition, when the same driving chip is adopted to drive a plurality of display panels simultaneously, each display panel is independently provided with a corresponding grid driving circuit, and then the grid driving circuits of the display panels are respectively matched with the driving chip to drive the display panels in a display mode. By providing the gate driver circuits corresponding to the display panels, different images can be displayed on the same display device or images with different resolutions can be displayed. For example, when different display panels are driven, clock signals with different frequencies may be used, so that some display panels are driven at high frequency to display images with high picture quality requirements or high resolution, and other display panels are driven at low frequency to display images such as simple icons. Therefore, the driving mode of each display panel in the display device can be reasonably set according to actual requirements, and the purpose of low-power-consumption driving is achieved through reasonable utilization. In addition, when the display panels are respectively connected with part of the data signal lines to the driving chip and no common data signal line exists between the display panels, the display device can drive the display panels simultaneously, so that the driving time can be correspondingly shortened, and the driving efficiency is improved.
In the display device shown in fig. 1, the first direction X1 is a vertical direction, the two display panels 11 are arranged along the first direction X1, and the driving chip 12 is disposed at the bottom end of the display device. In practical implementation, the display device provided in the embodiment of the present invention may further include more display panels, for example, 3 display panels, 4 display panels, and the like. The driving chip 12 may be disposed at the bottom of the display device, or may be disposed at the top of the display device. In addition, the display panels may be arranged along the second direction X2, and the driving chip may be disposed on the left side or the right side of the display device, which is not limited herein. Taking the display device shown in fig. 1 as an example, the display panel not adjacent to the driver chip 12, i.e. the display panel located on the upper side, does not need to separately set up a chip, the driver chip 12 located at the bottom drives the upper and lower display panels at the same time, so the display panel located on the upper side does not need to set up a binding region for binding the chip, and this part of region can be set up with pixels for displaying, so that the occupied screen ratio thereof can be higher than that of the display panel in the prior art, and the viewing experience is improved.
In practical implementation, as shown in fig. 2, which is a side view of the display device provided in the embodiment of the present invention, the display panels 11 may share the same flexible substrate 14; and the flexible substrate 14 is provided with a bent portion 141 between two adjacent display panels 11.
Further, in the display device provided in the embodiment of the present invention, the display surfaces of the display panels may be flat surfaces, and the display surfaces of two adjacent display panels 11 are not on the same plane.
When the display panels 11 are manufactured using the flexible substrate 14, the display surfaces of the display panels may be bent at different angles according to a specific practical scheme. For example, the display device and the supporting member may be fixed to each other by bending the display surface of the display device on which each display panel is located according to the angle of the supporting member. When the flexible substrate is used, each display panel can be manufactured on one plane, and after the display panel is manufactured, the bending part 141 can be deformed according to needs, so that the display panel is suitable for application scenes of various angles. In addition, the substrate of each display panel may be made of a rigid substrate such as a commonly used glass substrate, and when the substrate is made, the substrate needs to be first made into a specific shape, and then a display element is made thereon; alternatively, the adjacent display panels may be connected to each other by only providing a bent portion between the substrate boards of the adjacent display panels, and the adjacent display panels may be angularly deformed, which is not limited herein.
As shown in fig. 2, the display surfaces of the display panels provided by the embodiment of the invention are all flat surfaces, which are common display panel structures, and the display panels of the two display panels 11 may form an included angle of 90 degrees. Because the display panel with the display surface in the horizontal direction in fig. 2 does not need to be provided with a step area for binding a driving chip or a flexible circuit, the screen occupation ratio of the display panel can be made larger, and the display panel can be used as a main display surface in practical application to improve the viewing experience. In the display device shown in fig. 2, two display panels share at least a part of the data signal lines 13, and gate driving circuits are provided separately, whereby simultaneous driving or time-division driving of the two display panels can be realized. In addition, the display surface of each display panel 11 may be a non-planar surface, and when a flexible substrate is used, a non-planar display panel can be manufactured, and adjacent display panels can be connected by the bent portion 141, and each display panel uses a common driver chip.
In addition, the display surfaces of the adjacent display panels may be disposed at an angle other than 90 degrees. As shown in fig. 3, an angle between the two display panels 11 can be changed by the bending portion 141, such as an acute angle smaller than 90 degrees shown in fig. 3, or an obtuse angle larger than 90 degrees.
In another structure of the display device shown in fig. 4, the display device may include 3 display panels 11, and three display panels 11 are all fabricated on the same flexible substrate 14, and a bending portion 141 is provided between two adjacent display panels, and the bending portion 141 is deformed, so that the display surfaces of the display panels 11 are not on the same plane. Taking fig. 3 as an example, the display surfaces of the three display panels 11 are all flat, and the display panels of two adjacent display panels are perpendicular to each other. The display panel on the upper side and the display panel on the side do not need to be provided with a driving chip, so that the display panels can be used as main display surfaces to improve the screen occupation ratio of the main display panel.
In the display device provided by the embodiment of the invention, the resolution of each display panel can be the same or different.
Specifically, in an implementable manner, as shown in fig. 1, the number of pixels arranged in the second direction X2 of each display panel is equal; the number of the data signal lines 13 is equal to the number of pixels arranged in the second direction X2, and one data signal line 13 is shared by each column of pixels p arranged in the first direction X1. In the display device provided by the embodiment of the present invention, the number of pixels in each row of pixels of each display panel is equal, so that each row of pixels in the column direction can share one data signal line 13, the resolution of each display panel is the same, each display panel can display a high-resolution image, and the image display quality is good; meanwhile, the data signal lines 13 can be arranged as few as possible by adopting a mode of sharing the data signal lines, so that the process is simplified.
By adopting the structure of the display device provided by the embodiment of the invention, the resolution of the images displayed by each display panel can be flexibly switched, and each display panel can display the images with the same resolution and can also display the images with different resolutions. For example, the display device may include three display panels, and the three display panels form a U shape so that the front, the side, and the back of the display device may be used for displaying. If two display surfaces are required to be occupied to show more detailed contents when a certain picture is displayed, or the image is required to be displayed on two continuous display surfaces to highlight the stereoscopic effect, the display resolution of the two continuous display panels for displaying can be set to be the same, so that the display effect of the picture can be ensured to be consistent when the same picture is displayed. In some application scenarios, only one display surface may be required to display important images, and the other display surfaces are only used for displaying simple auxiliary information, so that the display panel displaying the important images can be set to be displayed with a resolution, and the display resolution of the display panels displaying images such as simple icons is reduced, thereby reducing unnecessary power consumption and realizing more reasonable utilization of the display panels of the display device.
The following method can be used to display images with different resolutions on display panels having the same resolution. As shown in fig. 5a and 5b, at least two adjacent pixels p in at least one display panel form a pixel group PG, and the arrangement structure of the pixels in each pixel group PG is the same; each pixel group PG is displayed only by the pixels p located at the same position.
Specifically, as shown in fig. 5a, the two display panels 11a and 11b arranged in the first direction X1 have the same number of pixels arranged in the second direction X2, and each column of pixels of the two display panels 11a and 11b may share one data signal line 13, and at this time, the display panels 11a and 11b may have the same resolution; both the display panel 11a located on the upper side and the display panel 11b located on the lower side may be used for displaying high-resolution images and may be used for displaying low-resolution images. For example, when the display panel 11 on the upper side is used for displaying a high-resolution image and the display panel 11b on the lower side is used for displaying a low-resolution image, four pixels p adjacent to each other in the display panel 11b on the lower side may be configured into one pixel group PG and each pixel group PG may be displayed using only the pixel p on the upper right corner (in fig. 5a, a pixel filled with gray scale represents a pixel not used for display and a pixel not filled represents a pixel used for display), so that when each pixel in the display panel 11a on the upper side is used for display and only one pixel in the pixel group PG is used for display in the display panel 11b on the lower side, the image resolution of the display panel 11b on the lower side is smaller than that of the display panel 11a on the upper side. In a specific application, the display surface of the display panel 11a located at the upper side can be used as a main display surface for displaying a display screen with high resolution, and the display panel 11b located at the lower side can be used for displaying auxiliary information such as time and temperature without excessively high resolution; by adopting the display mode, the display content can be enriched, the display content is diversified, and meanwhile, the high-resolution display or the low-resolution display can be switched according to the display quality required by the image, so that the power consumption of the display device can be reasonably controlled.
As shown in fig. 5b, the display device includes three display panels 11a, 11b, and 11 c. The resolution of the images displayed by the three display panels is different. All pixels in the display panel 11a are used for displaying an image; two pixels adjacent in the second direction X2 in the display panel 11b constitute one pixel group PGb, and the pixel on the left side in each pixel group PGb is used to display an image; the four pixels of the display panel 11c arrayed in the first direction X1 and the second direction X2 form a pixel group PGc, and the pixels located at the upper right corner of the first pixel group PGc are used for displaying an image (the pixels filled with gray scale in fig. 5b represent the pixels not used for display, and the pixels not filled represent the pixels used for display). At this time, the three display panels in the display device may display images of different resolutions, respectively, and the image resolution of the display panel 11a is greater than the image resolutions of the display panels 11b and 11 c.
In another implementable manner, as shown in fig. 6, the display panel includes: a first display panel having the largest number of pixels arranged in a second direction X2; the number of the data signal lines 13 is equal to the number of pixels arranged in the second direction of the first display panel; each column of pixels of the first display panel arranged along the first direction X1 is connected to one data signal line 13; each column of pixels of the display panels other than the first display panel arranged in the first direction X1 shares one data signal line 13.
Taking the structure of the display device shown in fig. 6 as an example, the display device includes two display panels 11a and 11b, where the display panel 11a located on the upper side is the first display panel having the largest number of pixels arranged along the second direction X2. The number of the data signal lines 13 is set to be equal to the number of pixels arranged in the second direction X2 of the display panel 11a (that is, the number of the data signal lines is equal to the number of pixels in each row of pixels), and the number of pixels arranged in the second direction X2 of the display panel 11b located on the lower side, that is, the number of pixels in each row of the display panel 11a is smaller than the number of pixels in each row of the display panel 11a, so that, in the direction of the pixel column, the display panel 11b does not need to connect all the number of the data signal lines, and only needs to share the same data signal line with the display panel 11a at the same pixel column position, and taking fig. 6 as an example, each column of the pixels of the display panel 11b and each column of the pixels of the display panel 11a share the first data signal line 131, the third data signal line 133, the fifth data signal line 135 and the seventh data signal line 137, and the second data signal line 132, the fourth data signal line 134, the seventh, The sixth data signal line 136 passes only between the pixel columns of the display panel 11b, and does not connect the pixels.
By adopting the structure of the display device provided by the embodiment of the invention, the number of the data signal lines is equal to the number of the pixels of the pixel row with the largest number of pixels, and the pixel columns of other display panels share the data signal lines, so that the independently used data signal lines do not need to be arranged for each display panel, the process is simplified, and the area of the non-opening area of the display panel is reduced.
In practical applications, since the number of pixels connected to the second data signal line 132, the fourth data signal line 134, and the sixth data signal line 136 is less than the number of pixels connected to the first data signal line 131, the third data signal line 133, the fifth data signal line 135, and the seventh data signal line 137, the load of the even-numbered data signal lines is less than the load of the odd-numbered data signal lines, and thus, the display luminance of the even-numbered pixels is different from the display luminance of the odd-numbered pixels during displaying, and the display luminance of the display panel is not uniform. To avoid the above problem, as shown in fig. 7a and 7b, a load compensation unit may be connected to the end of the even column data signal line to reduce the load difference between the even column data signal line and the odd column data signal line. Further, as shown in fig. 7a, the load compensation unit may be a resistance compensation unit R; alternatively, as shown in fig. 7b, the load compensation unit may be a capacitance compensation unit C.
In another implementable manner, as shown in fig. 8, the display panel includes: a second display panel having the smallest number of pixels arranged in a second direction X2; the number of the data signal lines 13 is equal to the number of pixels arranged in the second direction of the second display panel; the display device further includes: a plurality of splitters 15 between the second display panel and an adjacent display panel; each column of pixels of the second display panel arranged along the first direction X1 is respectively connected with a data signal line; each data signal line is connected with the input end in of a splitter 15, and the output end out of the splitter 15 is connected with a plurality of expanded data signal lines 13'; each column of pixels of the display panels except the second display panel arranged along the first direction is connected with one extension data signal line 13'.
Taking the structure of the display device shown in fig. 7 as an example, the display device includes two display panels 11a and 11b having different numbers of pixels, wherein the display panel 11b located on the lower side is the second display panel having the smallest number of pixels arranged in the second direction X2. The number of data signal lines 13 is set to be equal to the number of pixels arranged in the second direction X2 of the display panel 11b (i.e., the number of data signal lines is equal to the number of pixels per row of pixels), and the number of pixels arranged in the second direction X2 of the display panel 11a located on the upper side, i.e., the number of pixels per row is larger than the number of pixels per row of the display panel 11b, that is, the display panel 11a includes more pixel columns than the display panel 11b, and more data signal lines are required. Therefore, when the number of data signal lines of the display device is the same as the number of pixel columns of the display panel 11b, more extended data signal lines 13' can be extended by using the demultiplexer to connect the pixels of each column of the display panel 11 a. Taking fig. 7 as a column, the splitter 15 may expand one data signal line into two data lines, and at this time, the data transmission time of the one data signal line connected to the display panel 11b and the two data signal lines connected to the display panel 11a is long, and the data signal is transmitted to the display panel 11a by using a time-sharing driving method.
With the structure of the display device provided in the embodiment of the present invention, the number of the data signal lines 13 is equal to the number of pixels in the pixel row having the smallest number of pixels, and the splitter 15 is used to expand the pixel columns of the data signal lines connected to the adjacent display panels, so that the display panel having a smaller number of pixel columns does not need to provide extra pixel columns between the pixel columns for connecting to other display panels, and thus the area of the non-opening area of the pixels can be reduced, and the area of the pixels can be correspondingly increased during manufacturing, so as to improve the light transmittance of the display panel. In addition, when the splitter is used for connecting the data signal lines of each display panel, the positions of the data signal lines are not strictly controlled any more, and only the end positions of the data signal lines need to be led out and connected to the input ends or the output ends of the corresponding splitters 15, at the moment, the positions of the pixel columns of the adjacent display panels do not need to be strictly aligned any more, and can be arranged in a staggered mode according to the use requirements of the display panels, so that the manufacturing difficulty of the display panels is reduced.
In practical applications, the structure of any one of the display devices can be adopted according to the requirement of display resolution, and the connection modes can be used in the same display device in a crossed manner, which is not limited herein.
In a specific implementation, the display panel in each of the display devices provided in the embodiments of the present invention may be an organic light emitting display panel, and may also be an electronic paper display panel. Both the organic light emitting display panel and the electronic paper display panel can adopt a thin film transistor active driving mode to carry out display driving. For example, the Organic Light Emitting Diode display panel may adopt an Active-matrix Organic Light Emitting Diode (AMOLED) display panel, and each pixel of the display panel is an Organic Light Emitting Diode device and includes an anode, a Light Emitting layer, and a cathode. A thin film transistor array is manufactured between an anode and a substrate, one thin film transistor TFT corresponds to one organic light emitting diode device (OLED), each thin film transistor TFT is connected with one grid scanning line and one data signal line, the thin film transistor TFT is turned on by receiving scanning signals of the grid scanning lines, and the organic light emitting diode device is driven to display certain brightness by receiving data signals of the data signal lines, so that image display is achieved.
In addition, when the display panel is an electronic paper display panel, the production technology of the liquid crystal display panel can be used, only the electronic ink needs to be coated on the TFT array substrate, electrodes are arranged on two sides of the electronic ink, one thin film transistor TFT corresponds to one electrode, each thin film transistor TFT is connected with one grid scanning line and one data signal line, the thin film transistor TFT is turned on by receiving the scanning signal of the grid scanning line, and the data signal of the data signal line is applied to the connected electrode, so that the pixel position of the electrode displays white or black, and image display is realized. The electronic paper display panel has very low power consumption, can stop supplying power only by applying signals to the electrodes for a short time, and can apply signals when the next frame of image is switched, and has high reflectivity and contrast ratio of the electronic paper, and high readability can be achieved without backlight. In practical applications, different display panels may adopt different display modes, and may also adopt the same display mode, which is not limited herein.
Each display panel included in the display device provided in the embodiment of the present invention may also independently drive to display, for example, when the display panel includes a third display panel whose display mode is an organic light emitting display mode, the third display panel includes: the pixel circuits are connected with the pixels in a one-to-one correspondence mode, and the low-level signal source is connected with the low-level signal end of each pixel circuit; the low-level signal source is used for outputting a low-level signal to the low-level signal end of each pixel circuit and controlling each corresponding pixel to emit light; and outputting a high-level signal to the low-level signal end of each pixel to control the corresponding pixel to be closed.
In practical applications, the pixel circuit corresponding to each pixel may have a circuit structure as shown in fig. 9, and the pixel circuit may include at least: a first thin film transistor M1, an initialization thin film transistor M2, a second thin film transistor M3, a driving thin film transistor M4, and an organic light emitting diode OLED; the source of the initialization thin film transistor M2 is generally connected to the reference signal line VREF, and is configured to initialize the gate of the driving thin film transistor M4 by using the reference potential of the reference signal line VREF when the driving thin film transistor M2 is in a conducting state under the control of the first scanning signal line S1; the source of the first thin film transistor M1 is commonly connected to the data signal line VDATA, and is used for writing the data signal of the data signal line VDATA into the source of the driving thin film transistor M4 when the first thin film transistor M1 is turned on under the control of the second scanning signal line S2; the source of the second thin film transistor M3 is generally connected to the power supply voltage signal line PVDD, and is used for writing a power supply signal supplied from the power supply voltage signal line PVDD to the source of the driving thin film transistor M4 when the second thin film transistor M3 is in an on state under the control of the emission control line EMIT.
Further, the pixel circuit further includes: a light emission controlling thin film transistor M5; the gate of the light emitting control thin film transistor M5 is connected to a light emitting control line EMIT, the source is connected to the drain of the driving thin film transistor M4, and the drain is connected to the organic light emitting diode OLED. When the light emitting control thin film transistor M5 is in a conducting state under the control of the light emitting control line EMIT, the drain of the driving thin film transistor M4 is conducted with the organic light emitting diode OLED. That is, when the light emitting control tft M5 is turned on under the control of the light emitting control line EMIT, a path is formed between the power voltage signal line PVDD and the other power voltage signal line PVEE, and the magnitude of the current in the circuit determines the magnitude of the OLED display luminance. That is, the OLED can be driven to emit light only when the PVDD is greater than the PVEE by at least the set voltage difference, otherwise the OLED cannot be driven to emit light.
Taking the pixel circuit structure shown in fig. 9 as an example, each thin film transistor is a P-type transistor, and is turned on when a low level is input to the gate, and is turned off when a high level is input to the gate. The signal source connected to the power voltage signal line PVEE in fig. 9 is the above-mentioned low-level signal source, and when the PVEE outputs a low-level signal to the low-level signal end of each pixel circuit, the corresponding OLED pixel can be controlled to emit light under normal timing control; when the PVEE outputs a high-level signal to the low-level signal terminal of each pixel, a voltage difference required by the OLED to emit light cannot be formed, and thus the OLED pixel connected to the pixel circuit does not emit light. Therefore, the display panel connected with the organic light-emitting display panel can be controlled to normally emit light or be in an off state by controlling the input potential of the low-level signal source of each organic light-emitting display panel.
In practical applications, if the display panels included in the display device are all organic light emitting display panels, the low level signal terminal of each display panel may be connected to a circuit for uniformly controlling the low level signal source. As shown in fig. 10, the three display panels 11a, 11b, and 11c included in the display device are all organic light emitting display panels, low level signal terminals of the three display panels are all connected to the flexible circuit board 16 on one side of the driving chip 12 through signal lines, and the low level signal source of each display panel can be independently controlled to be at a high level or a low level through the flexible circuit board 16, so that the three display panels can be respectively controlled to normally display or turn off.
For example, the pixel circuits of the pixels of the three display panels included in the display device shown in fig. 10 are all the pixel circuit structures shown in fig. 9, the power voltage signal lines PVEE of the pixels of each display panel can be connected together to the low level signal terminals of the display panel, and the display panels connect the low level signal terminals to the flexible circuit board 16 through the connecting wires. For example, when the display panel 11a needs to be controlled to display and the display panel 11b and the display panel 11c are turned off, a low-level signal may be input to the low-level signal terminal of the display panel 11a and a high-level signal may be input to the low-level signal terminals of the display panels 11b and 11c through the flexible circuit board 16. At this time, in the pixel circuit corresponding to each pixel in the display panel 11a, a path is formed between the power supply voltage signal line PVDD and another power supply voltage signal line PVEE under the control of the emission control signal, the PVDD is at least larger than a set voltage difference with respect to the PVEE, the current in the path drives each pixel to emit light, and under the control of different data signals, each pixel displays different luminance, thereby realizing the display of the display panel 11 a. However, for the display panels 11b and 11c, since PVDD is smaller than the above-mentioned set voltage difference with respect to PVEE in the pixel circuits of the pixels in the two display panels, a voltage difference required for the OLED to emit light cannot be formed, so that the pixels of the display panels 11b and 11c do not emit light, and the display panels 11b and 11c are in an off state.
The display device shown in fig. 10 can be controlled to be turned on or off according to the above principle, for example, two of the three display panels can be controlled to display, and the other display panel can be controlled to be turned off; the three display panels may be time-divisionally displayed, and other possible embodiments are not described here.
In specific implementation, as shown in fig. 10, the display device provided in the embodiment of the present invention further includes: a support member 17, on the surface of which each display panel is covered; wherein the support member comprises at least two continuous surfaces, each surface being provided with only one display panel.
Taking the display device shown in fig. 10 as an example, the support 17 may be a rectangular parallelepiped structure, each of three continuous surfaces of the rectangular parallelepiped may cover one display panel, as shown in fig. 10, the upper surface covers the display panel 11a, the side surface covers the display panel 11b, the bottom surface covers the display panel 11c, and the data signal lines of the three display panels are shared and connected to the driving chip 12. All three surfaces can be used as display surfaces for displaying.
In practical implementation, the substrate of each display panel may be adhered to the surface of the supporting member 17, so that the display panel is fixed to the surface of the supporting member 17. In addition, a connecting part, such as a fixing groove, a fixing clamp and the like, can be arranged on the surface of the supporting part 17, so that each display panel can be covered on the surface of the supporting part 17, then the connecting part is reset to be used for fixing each display panel, and the display panel can be detached after use. The supporting member 17 can be made of various materials, such as glass, plastic, rubber, metal, etc., without limitation.
Further, when the support 17 is a rectangular parallelepiped structure, the display device includes three display panels; the display surface of the display panel farthest from the driver chip 12 in the first direction serves as a main display surface, the display surface of the display panel positioned in the middle serves as a display surface of a side surface or a bottom surface, and the display surface of the display panel adjacent to the driver chip serves as a display surface of a rear surface.
In practical applications, the main display surface can be made into a high-resolution (such as 1440 × 2160) display panel for displaying images such as videos and pictures; the display panel on the side or bottom surface can be made into a low-resolution (e.g. 720 x 1080) display panel for displaying information such as text, time, weather, operators, etc.; the display panel on the back can be made into electronic paper for reading articles. The display device can respectively control each display surface to display according to the application of the display device, and can also switch display at will according to application scenes, so that the content displayed by the display device is richer, and meanwhile, the power consumption can be reduced. And the main display surface does not need to set up driver chip and flexible circuit alone, consequently sets up driver chip and flexible circuit's space all can set up the pixel and be used for showing originally, realizes the image display who occupies more the screen ratio, promotes to watch and experiences.
In a specific application, the display panel farthest from the driving chip in the first direction is used as the main display surface, so that the resolution of the display panel can be generally greater than that of the rest of the display panels. For example, in the display device shown in fig. 10, the display panel 11a is used as a main display surface, and the display panel can be manufactured as a high-resolution display panel at the time of manufacturing, and the remaining two display panels 11b and 11c can be used as auxiliary display surfaces for displaying, and in this case, the two display panels can be manufactured as low-resolution display panels to reduce the production cost. However, in practical applications, the display resolution of each display panel should be set according to practical application scenarios and requirements, and is not limited to the application scenarios of the above embodiments of the present invention.
The display device provided by the embodiment of the invention comprises at least two display panels and a driving chip, wherein the display panels and the driving chip are arranged along a first direction; the driving chip is positioned at any side of all the display panels in the first direction; the display device further includes: a plurality of data signal lines extending along a first direction, each of the data signal lines being connected to the driving chip; each display panel is connected to at least part of the data signal lines; each display panel includes: the grid driving circuits are vertically distributed along a first direction; each display panel includes: the display panel comprises a plurality of pixels, a plurality of pixel array units and a plurality of pixel array units, wherein the pixels of each display panel are distributed in an array along a first direction and a second direction perpendicular to the first direction; each pixel of each display panel is connected to a corresponding gate driving circuit. Because a plurality of display panels share one driving chip to provide data signals, the display panels adjacent to the driving chip are only required to be reserved for binding the non-display space of the driving chip, and other display panels do not need to be provided with the reserved space, so that the space of the display panels can be used for displaying, and the screen occupation ratio of the display panels is further improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
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 (9)

1. A display device, comprising: at least two display panels and driving chips arranged along a first direction; the driving chip is positioned at any side of all the display panels in the first direction;
the display device further includes: a plurality of data signal lines extending in the first direction, each of the data signal lines being connected to the driving chip; each display panel is connected with at least part of the data signal lines;
each of the display panels includes: the grid driving circuits are distributed along the first direction;
each of the display panels includes: the pixels of each display panel are distributed in an array along the first direction and a second direction perpendicular to the first direction; each pixel of each display panel is connected to the corresponding gate drive circuit;
the display panel of the display device is an organic light-emitting display panel;
the organic light emitting display panel includes: the pixel circuits are connected with the pixels in a one-to-one correspondence mode, and the low-level signal source is connected with the low-level signal end of each pixel circuit;
the low-level signal source is used for outputting a low-level signal to a low-level signal end of each pixel circuit and controlling each corresponding pixel to emit light; and outputting a high-level signal to the low-level signal end of each pixel, and controlling each corresponding pixel to be closed.
2. The display device according to claim 1, wherein the display panels share a same flexible substrate;
the flexible substrate base plate is provided with a bending part between two adjacent display panels;
the display surfaces of the display panels are planes, and the display surfaces of two adjacent display panels are not on the same plane.
3. The display device according to claim 1, wherein the display panels are arranged in the second direction with an equal number of pixels;
the number of the data signal lines is equal to the number of the pixels arranged along the second direction, and each column of the pixels arranged along the first direction shares one data signal line.
4. The display device according to claim 3, wherein at least two adjacent pixels in at least one of the display panels form pixel groups, and the arrangement structure of the pixels in each of the pixel groups is the same;
each of the pixel groups is displayed only by pixels located at the same position.
5. The display device according to claim 1, wherein the display panel comprises: a first display panel having a maximum number of pixels arranged in the second direction;
the number of the data signal lines is equal to the number of the pixels arranged along the second direction of the first display panel;
each row of pixels arranged along the first direction of the first display panel is respectively connected with one data signal line;
and pixels of each column of the display panels except the first display panel and arranged along the first direction share one data signal line.
6. The display device according to claim 1, wherein the display panel comprises: a second display panel having a minimum number of pixels arranged in the second direction;
the number of the data signal lines is equal to the number of pixels arranged along the second direction of the second display panel;
the display device further includes: a plurality of shunts between the second display panel and an adjacent display panel;
each row of pixels arranged along the first direction of the second display panel is respectively connected with one data signal line;
each data signal line is respectively connected with the input end of one splitter, and the output end of the splitter is connected with a plurality of expanded data signal lines;
and each column of pixels of the display panels except the second display panel, which are arranged along the first direction, is respectively connected with one extended data signal line.
7. The display device according to any one of claims 1 to 6, further comprising: the display panels are covered on the surface of the support; wherein the content of the first and second substances,
the support comprises at least two continuous surfaces, each of which is provided with only one display panel.
8. The display device according to claim 7, wherein the support member is a rectangular parallelepiped structure, the display device including three display panels; wherein the content of the first and second substances,
the display surface of the display panel farthest from the driving chip in the first direction is used as a main display surface, the display surface of the display panel positioned in the middle is used as a display surface of a side surface or a bottom surface, and the display surface of the display panel adjacent to the driving chip is used as a display surface of a back surface.
9. The display device according to claim 7, wherein a resolution of the display panel farthest from the driving chip in the first direction is greater than resolutions of the remaining two display panels.
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