CN107689196B - AMOLED display screen and wiring method thereof - Google Patents
AMOLED display screen and wiring method thereof Download PDFInfo
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- CN107689196B CN107689196B CN201710792221.0A CN201710792221A CN107689196B CN 107689196 B CN107689196 B CN 107689196B CN 201710792221 A CN201710792221 A CN 201710792221A CN 107689196 B CN107689196 B CN 107689196B
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 14
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses an AMOLED display screen, which sequentially comprises an outer edge of the display screen, an effective display area, a wiring area, a Frit packaging area and a drilling area positioned in the middle of the AMOLED display screen from outside to inside; the effective display area is distributed with pixel circuits; each path of pixel circuit is led out of a plurality of paths of signal lines which are respectively arranged on different metal layers of the wiring area along a preset direction; the wiring directions of the metal layers on the same surface in the wiring area are the same, the wiring directions of the metal layers on different surfaces are different, and a designated interval is reserved among the signal wires in the metal layers on the same surface; the metal layers are isolated by the insulating layer, and the appointed signal wires of the metal layers are electrically connected by the through holes. The invention also provides a wiring method of the AMOLED display screen. By implementing the technical scheme provided by the invention, the occupied space of the signal line can be saved, the effective display area can be increased, and the display quality of the AMOLED display screen with the drilled holes can be improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to an AMOLED display screen and a wiring method thereof.
Background
AMOLED (Active-Matrix Organic LIGHT EMITTING Diode) is also known as an Active Matrix Organic light emitting Diode or an Active Organic light emitting Diode. The AMOLED panel is provided with an LTPS (low temperature polysilicon technology) backboard circuit structure, an anode, an organic light-emitting layer and a cathode which can be sequentially formed on a substrate. The LTPS backboard circuit is composed of a multi-layer structure, TFTs (thin film transistors) are formed among different layers through process procedures, and the different layers are connected or wiring lines of the same layer are separated from each other. The manufacturing process of the general AMOLED panel is divided into a back plate section (namely an LTPS section), an OLED evaporation section and a packaging section, wherein the back plate section comprises an array substrate, an anode and the like which form a circuit structure; the OLED evaporation section comprises the processes of evaporation of organic luminescent materials, cathode evaporation and the like.
With the rise of intelligent wearing products, such as intelligent watches with entity pointer display and vehicle-mounted liquid crystal displays, the traditional watches are combined with high-tech intelligent display, so that the consumer desire of customers can be stimulated. However, smart display screens are often required to accommodate various physical functions, thereby enabling portions of the Pixel circuitry of the display area to be deleted or removed. For example, with a physical pointer display, since a through hole is drilled in the display panel to install the pointer, the Pixel circuit in the middle of the display area needs to be deleted, and thus a certain space needs to be reserved between the drilled area and the display area for laying out the signal lines of the Pixel circuit.
The signal lines of the current active display mostly adopt grid-type wiring, namely, each sub-pixel unit is connected with various signal lines, and the number of the sub-pixel units is larger, the number of the signal lines is larger. On the other hand, the smaller the hollowed out part of the effective display area (ACTIVE AREA, abbreviated as AA) is, the smaller the influence on the display effect of the AMOLED is, so that the wiring space between AA and the inner ring in the prior art is very limited.
Disclosure of Invention
The invention aims to solve the technical problem of providing an AMOLED display screen and a wiring method thereof, which can optimize the signal line distribution of pixel circuits of the AMOLED display screen, save the occupied space of the signal lines, increase the effective display area and improve the display quality of the AMOLED display screen with holes.
In order to solve the above technical problems, in one aspect, an embodiment of the present invention provides an AMOLED display screen, including, in order from outside to inside: the display screen comprises a display screen outer edge, an effective display area, a wiring area, a Frit packaging area and a drilling area positioned in the middle of the AMOLED display screen;
The effective display area is distributed with pixel circuits and is used for displaying information of the AMOLED display screen; each path of pixel circuit leading-out multipath signal lines are respectively arranged on different metal layers of the wiring area along a preset direction; the wiring directions of the metal layers on the same surface in the wiring area are the same, the wiring directions of the metal layers on different surfaces are different, and a designated interval is reserved among the signal wires in the metal layers on the same surface; the metal layers in the wiring area are isolated by an insulating layer, and designated signal wires of the metal layers are electrically connected by a via hole;
The Frit encapsulation region is disposed between the drilling region and the wiring region, for preventing oxidation corrosion of the light emitting device of the effective display region;
And the drilling area is used for installing a functional device associated with the display information of the AMOLED display screen.
Preferably, the wiring area comprises a first metal layer and a second metal layer from bottom to top; each path of multi-path signal lines led out by the pixel circuit comprises: a plurality of scan signal lines arranged in a horizontal direction on the first metal layer, a plurality of data signal lines arranged in a vertical direction on the second metal layer, and a plurality of power signal lines; the scanning signal line is used for connecting scanning switch signals for all sub-pixels in the pixel circuit; the data signal line is used for providing data voltages for the pixel circuits so as to control transmission of specified digital signals; the power supply signal line is used for providing power supply voltage for the pixel circuit.
Further, a third metal layer is arranged on the second metal layer; the power signal line is led from the second metal layer to the third metal layer through a via hole and is connected in a whole circle between the effective display area and the Frit encapsulation area.
Preferably, a via hole for guiding the power signal line between the second metal layer and the third metal layer is disposed at an interface between the wiring region and the effective display region.
Further, the multi-channel signal lines led out by each pixel circuit further comprise: a restart signal line, a light emitting signal line, and an initialization signal line arranged in a horizontal direction on the first metal layer; the restarting signal line is used for resetting the current working state of the AMOLED display screen; the luminous signal line is used for controlling each sub-pixel in the pixel circuit to be switched on or off and outputting required screen display information; the initialization signal line is used for presetting working parameters of the AMOLED display screen.
In one implementation, the footprint of the routing area is proportional to the number of pixels from which the active display area is drawn.
Preferably, the pixel circuit is constituted by a plurality of TFT thin film transistors and one storage capacitor.
In one implementation, one or more of the active display area, the routing area, and the Frit encapsulation area are annular areas.
In yet another implementation, one or more of the active display area, the routing area, and the Frit encapsulation area are rectangular areas.
On the other hand, the embodiment of the invention also provides a wiring method of the AMOLED display screen, which is applied to any one of the AMOLED display screens, and comprises the following steps:
extracting a pixel circuit between the effective display area and the Frit packaging area to form a wiring area;
Constructing a plurality of metal layers on the wiring region;
respectively etching multiple paths of signal lines led out by a pixel circuit of an effective display area on different metal layers of the wiring area along a preset direction; the wiring directions of the metal layers on the same surface in the wiring area are the same, the wiring directions of the metal layers on different surfaces are different, and a designated interval is reserved among the signal wires in the metal layers on the same surface;
The metal layers in the wiring area are isolated by an insulating layer, and designated signal wires of the metal layers are electrically connected by a via hole.
According to the AMOLED display screen provided by the embodiment of the invention, the middle part is provided with the drilling area, the drilling area is provided with the Frit packaging area and the wiring area between the effective display area (AA area for short), wherein the Frit packaging area can effectively isolate external water vapor and prevent the water vapor from entering the AA area to oxidize and corrode the light-emitting device, and meanwhile, part of Pixel (Pixel) circuits are deleted or extracted in the AA area to form the wiring area in a reserved space; the optimized layout of the signal wires in the wiring area determines the area and the display quality of the effective display area of the AMOLED display screen with the holes, so that the multi-path signal wires led out by each pixel circuit are respectively arranged on different metal layers in the wiring area along the preset direction, the wiring directions of the metal layers on the same plane in the wiring area are the same, the wiring directions of the metal layers on different planes are different, the occupied area of the signal wires on each metal layer is reduced, and the electromagnetic interference among the signal wires on each layer is reduced; the method comprises the steps that a designated space is reserved among signal wires in the same-side metal layers, the metal layers in each wiring area are isolated through an insulating layer, and the designated signal wires in each metal layer are electrically connected through a through hole, so that the optimized layout of the signal wires is guided on the premise that the signal wires are correctly connected. By implementing the technical scheme provided by the invention, the occupied space of the signal line can be effectively saved, the effective display area of the AMOLED display screen with the drilled holes can be increased, and the display quality can be improved.
Drawings
FIG. 1 is a schematic top view of an embodiment of an AMOLED display screen provided by the present invention.
FIG. 2 is a schematic cross-sectional view of a portion of a circuit of one embodiment of an AMOLED display screen routing area provided by the present invention.
FIG. 3a is a schematic layout view of a first metal layer of a layout area of an AMOLED display screen provided by the present invention; fig. 3b is a schematic layout diagram of a partial signal line of the first metal layer provided in fig. 3 a.
FIG. 4a is a schematic layout view of a second metal layer of the layout area of an AMOLED display screen provided by the present invention; fig. 4b is a schematic layout view of partial signal lines of the second metal layer provided in fig. 4 a.
FIG. 5a is a schematic layout view of a second metal layer of the layout area of an AMOLED display screen provided by the present invention; fig. 5b is a schematic layout view of partial signal lines of the second metal layer provided in fig. 5 a.
FIG. 6 is a schematic layout diagram of a third metal layer of the layout area of an AMOLED display screen provided by the present invention.
FIG. 7 is a flow chart of steps of one embodiment of a routing method for an AMOLED display screen provided by 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 accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a schematic top view of an embodiment of an AMOLED display screen according to the present invention is shown.
Specifically, the AMOLED display screen sequentially comprises, from outside to inside: the display screen comprises a display screen outer edge 1, an effective display area 2, a wiring area 3, a Frit encapsulation area 4 and a drilling area 5 positioned in the middle of the AMOLED display screen. The shapes of the components of the AMOLED display screen can be properly adjusted according to practical application occasions. Preferably, as shown in fig. 1, one or more of the effective display area (AA area for short) 2, the wiring area 3 and the Frit encapsulation area 4 is a ring area or a rectangular area, and the shape of the display screen outer edge 1 matches the shape of the effective display area 2.
The effective display area 2 is distributed with pixel circuits (not shown in fig. 1) for displaying information of the AMOLED display screen; each path of signal lines led out by the pixel circuits are respectively arranged on different metal layers of the wiring area 3 along a preset direction; the wiring directions of the metal layers on the same plane in the wiring area 3 are the same, the wiring directions of the metal layers on different planes are different, and a designated interval is reserved among the signal lines in the metal layers on the same plane; the metal layers in the wiring area 3 are isolated by an insulating layer, and designated signal wires of the metal layers are electrically connected by a via hole; the Frit encapsulation region 4 is disposed between the drilling region 5 and the wiring region 3, for preventing oxidation corrosion of the light emitting device of the effective display region 2; in specific implementation, the Frit packaging area 4 can be packaged by glass powder, so that external water vapor is isolated from entering the effective display area 2 to oxidize and corrode the light-emitting device. And the drilling area 5 is used for installing a functional device associated with the display information of the AMOLED display screen.
Referring to fig. 2, a schematic cross-sectional view of a portion of a circuit of an embodiment of an AMOLED display screen routing area provided by the present invention is shown.
The wiring region comprises a first metal layer 01 (01A and 01B in figure 2) and a second metal layer 03 (03A and 03B in figure 2) from bottom to top; wherein, the first metal layer 01 is preferably realized by molybdenum Mo, and in the partial circuit shown in fig. 2, the first metal layer 01 includes coplanar metal layers 01A and 01B separated by a certain distance; the second metal layer 03 preferably employs a metallic titanium, aluminum composition (Ti/Al/Ti), and portions of the second metal layers 03A and 03B shown in fig. 2; a first insulating layer 02 is arranged between the first metal layers 01A and 01B and the second metal layers 03A and 03B, second insulating layers 04A and 04B are arranged between the second metal layers 03A and 03B and the third metal layer 05, and a via 41 is arranged between the second metal layers and the third metal layer.
In this embodiment, the multiple signal lines led out from each pixel circuit include: a plurality of SCAN signal lines SCAN arranged in a horizontal direction on the first metal layer 01, a plurality of data signal lines Vdata arranged in a vertical direction on the second metal layer 03, and a plurality of power signal lines ELVDD; the scanning signal line SCAN is used for connecting scanning switch signals to each sub-pixel in the pixel circuit; the data signal line Vdata is used for providing data voltages for the pixel circuits so as to control transmission of specified digital signals; the power signal line ELVDD is used for providing a power voltage to the pixel circuit.
Taking a round AMOLED display screen as an example, referring to fig. 3a, a schematic wiring diagram of a first metal layer of a wiring area of the AMOLED display screen is provided in the present invention. The member 21 shown in fig. 3a is a Pixel (Pixel) circuit, the member 31 shown in the drawing is a signal line of the Pixel circuit 21 arranged in the horizontal direction, and the region 4 in fig. 3a is a Frit-package region. Fig. 3b is a schematic layout view of partial signal lines of the first metal layer shown in fig. 3a, and as shown in fig. 3b, the space for limited routing in the horizontal direction is in the upper and lower two areas of the routing area 3 b.
In specific implementation, the multiple signal lines led out from each pixel circuit 21 further include: a RESET signal line RESET, a light emitting signal line EM, and an initialization signal line Vinit arranged on the first metal layer 01 in a horizontal direction; the RESET signal line RESET is used for resetting the current working state of the AMOLED display screen; the luminous signal line EM is used for controlling each sub-pixel in the pixel circuit to be switched on or off and outputting required screen display information; the initialization signal line Vinit is used for presetting the working parameters of the AMOLED display screen.
The signal lines 21 arranged in the horizontal direction shown in fig. 3b include a SCAN signal line SCAN, a RESET signal line RESET, a light emitting signal line EM, and an initialization signal line Vinit, and thus a reserved space a is required. When the routing space (i.e., the routing area 3) between the AA area 2 and the Frit packaging area 4 is set, assuming that the pixel circuits 21 deleted or drawn by the AA area 2 are 2n (n > 0) paths, the number of the routing lines of each path of pixel circuits 21 corresponding to the horizontal direction is 4 (i.e., the scanning signal line SCAN, the restarting signal line RESET, the luminous signal line EM and the initializing signal line Vinit), 8n routing lines are totally arranged in the horizontal direction of the AMOLED display screen provided by the invention, and 4n signal lines are respectively distributed on the upper side and the lower side of the outer diameter of the Frit packaging area 4. When the line width of each signal line is 3 μm (micrometers), the distance between adjacent signal lines is also 3 μm, and the minimum linear distance of the reserved space a between the AA region 2 and the upper and lower sides of the inner ring Frit packaging region 4 is 4n×6μm, which is taken as the limiting factor of the occupation area of the first metal layer 01 of the wiring region 3. The signal provided by the initialization signal line Vinit is preferably a low voltage signal, and the data signal line Vdata is mainly a data voltage provided by an Integrated Circuit (IC) inside the AMOLED display screen, and the power signal line ELVDD is a power voltage provided by the IC.
The wiring of the wiring area 3 in the vertical direction of the second metal layer 03 is mainly the power signal line ELVDD and the data signal line Vdata. In this embodiment, each pixel circuit is composed of three sub-pixel (SubPixel) circuits, so that there are 12n signal lines in the vertical direction, and 6n signal lines are respectively on the left and right sides of the outer diameter of the Frit encapsulation area 4. Referring to fig. 4a, a schematic layout diagram of a second metal layer of a layout area of an AMOLED display screen according to the present invention is shown. Assuming that the line width of each signal line is 3 μm and the distance between adjacent signal lines is 3 μm, the linear distance between the AA region 2 and the left and right sides of the inner ring Frit package region 4 is at least 6n×6μm. Fig. 4b shows a partial signal line wiring schematic diagram in fig. 4a, in which the signal lines 32 of the pixel circuit 21 in the vertical direction shown include a power signal line ELVDD, a data signal line Vdata, and the vertical direction wiring space is limited by the left and right side regions of the second metal layer 03. If the outer diameter of the hollowed AA area 2 is 5mm (millimeters), the Size (Size) of the Pixel is 80 μm, 62 pixels are pulled out or deleted in the vertical direction, 62 pixels are pulled out or deleted in the horizontal direction, the wiring area of the AMOLED display screen needs to be reserved for 744 μm on the upper and lower sides of the second metal layer 03, and for 1116 μm on the left and right sides, so that the distance between the AA display area and the inner ring pit takes a larger value, i.e., a distance of about 1.2mm needs to be reserved as the wiring area 3. It is apparent that the number of signal lines from the left and right sides of the second metal layer shown in fig. 4b is large, and thus the occupied area of the wiring area 3 is determined to be increased accordingly, and the space b required for the wiring area 3 is also large.
Referring to fig. 5a, another wiring schematic of the second metal layer of the wiring area of the AMOLED display screen provided by the present invention; fig. 5b is a schematic view of a partial wiring of the second metal layer provided in fig. 5 a. In specific implementation, a third metal layer 05 is further disposed on the second metal layer 03; the power signal line ELVDD is led from the second metal layer 03 to the third metal layer 05 through a via 41 and is connected in one complete turn between the active display area 2 and the Frit encapsulation area 4. Since the signal line 32 in the vertical direction of the second metal layer 03 in the wiring area 3 shown in fig. 4b is separated from the power signal line ELVDD, the signal line 33 in the vertical direction of the second metal layer 03 in fig. 5b only includes the data signal line Vdata, and the power signal line ELVDD is replaced onto the signal line 34 in the third metal layer 05 through the via 41, compared with the embodiment of fig. 4a, the wiring scheme of fig. 5a can effectively reduce the required wiring space of the second metal layer 03, thereby reducing the lateral occupied area of the wiring area 3, and the required reserved space c of the wiring area 3 is significantly reduced compared with the reserved space c in fig. 4 b. Preferably, a via 41 for guiding the power signal line ELVDD between the second metal layer 03 and the third metal layer 05 is disposed at an interface between the wiring region 3 and the effective display region 2.
Referring to fig. 6, a schematic layout diagram of a third metal layer in a layout area of an AMOLED display screen according to the present invention is shown. The power signal lines 34 are distributed between the AA area 2 and the inner ring Frit packaging area 4 to form a whole circle, and ELVDD signals of the pixel circuits 21 around the hollowed-out periphery of the AA area 2 are respectively connected to the signal lines 34 of the third metal layer 05 through punching, so that wiring of the same metal surface (the second metal layer) in the vertical direction is reduced, and space is saved. Specifically, the power signal line ELVDD is led to the third metal layer 05 through holes in the portion close to the AA area 2, and the third metal layer 05 is connected to form a whole circle between the AA area 2 and the inner ring Frit packaging area 4, and the ELVDD signal lines of the upper and lower pixel circuits hollowed out in the AA area 2 are connected to the signal line 34 of the third metal layer 05 through the via holes 41, so that the reserved space between the AA area 2 and the inner ring Frit packaging area 4 in the left-right direction can be reduced to 560 μm, compared with the first metal layer 01 and the second metal layer 03, a larger value is taken as a limiting factor of the wiring area 3, and in this embodiment, the AA area 2 is reserved between the AA area 2 and the inner ring Frit packaging area 4 by about 0.8 mm.
It should be noted that, the direction of the signal line 31 of the first metal layer 01 in the wiring area 3 includes, but is not limited to, a horizontal direction, and similarly, the direction of the signal line 32 or 33 of the second metal layer 03 includes, but is not limited to, a vertical direction, and the direction of the signal line 34 of the third metal layer 05 includes, but is not limited to, connecting around the Frit package area 4 in a complete circle, and those skilled in the art can set the direction of the signal line according to the layout of the pixels, so that the wiring scheme of the wiring area 3 is better, the occupied area is smaller, and electromagnetic interference or signal crosstalk between each signal line in each different-plane metal layer or the same-plane metal layer is reduced as much as possible.
In a specific implementation, the occupied area of the wiring area 3 is proportional to the number of pixels that are extracted from the effective display area 2, the number of signal lines of the wiring area 3 is related to the number of pixel circuits 21 that are deleted or extracted from the effective display area, and in general, the more the number of pixels that are deleted, the more the number of signal lines of the wiring area 3; whereas the inner diameter of the active display area 2 is positively related to the area of said routing area 3, i.e. the distance between the AA area 2 and the inner ring Frit-pack area 4 is related to the hollowed-out inner diameter of the AA area 2. In practice, the smaller the hollowed inner diameter of the AA area 2 is, the smaller the number of pixels to be deleted is, the corresponding signal lines of the wiring area 3 are also reduced, and the effective display area of the AA area 2 is increased.
In the present embodiment, each pixel circuit 21 is constituted by a plurality of TFT thin film transistors and one storage capacitor, respectively, such as a pixel circuit of a 6T1C or 7T1C structure. The 6T1C pixel circuit comprises 6 TFT thin film transistors and a storage capacitor, and the 7T1C pixel circuit comprises 7 TFT thin film transistors and a storage capacitor so as to drive the normal display of the AMOLED display screen.
In order to connect the second metal layer 03 and the third metal layer 05, it is necessary to expose the insulating layer of the overlap region between the second metal layer 03 and the ground three metal layer 05 through a hole so that the two metals directly overlap through the via hole 41 to form a via.
Correspondingly, the embodiment of the invention also provides a wiring method of the AMOLED display screen, which is applied to any AMOLED display screen,
As shown in fig. 7, the method for wiring an AMOLED display screen according to the present invention includes:
step S1: the pixel circuit between the effective display area 2 and the Frit packaging area 4 is pulled away to form a wiring area 3;
Step S2: constructing a plurality of metal layers on the wiring area 3;
Step S3: respectively etching multiple paths of signal lines led out by the pixel circuits of the effective display area 2 on different metal layers of the wiring area 3 along a preset direction; the wiring directions of the metal layers on the same plane in the wiring area 3 are the same, the wiring directions of the metal layers on different planes are different, and a designated interval is reserved among the signal lines in the metal layers on the same plane;
Step S4: the metal layers in the wiring area 3 are isolated by an insulating layer, and the designated signal wires of the metal layers are electrically connected by a via hole.
According to the AMOLED display screen and the wiring method thereof provided by the embodiment of the invention, the middle part is provided with the drilling area, the drilling area is provided with the kit packaging area and the wiring area between the effective display area (AA area for short), wherein the kit packaging area can effectively isolate external water vapor and prevent the water vapor from entering the AA area to oxidize and corrode the light-emitting device, and meanwhile, part of Pixel circuits are deleted or extracted in the AA area to form the wiring area in a reserved space; the optimized layout of the signal wires in the wiring area determines the area and the display quality of the effective display area of the AMOLED display screen with the holes, so that the multi-path signal wires led out by each pixel circuit are respectively arranged on different metal layers in the wiring area along the preset direction, the wiring directions of the metal layers on the same plane in the wiring area are the same, the wiring directions of the metal layers on different planes are different, the occupied area of the signal wires on each metal layer is reduced, and the electromagnetic interference among the signal wires on each layer is reduced; the method comprises the steps that a designated space is reserved among signal wires in the same-side metal layers, the metal layers in each wiring area are isolated through an insulating layer, and the designated signal wires in each metal layer are electrically connected through a through hole, so that the optimized layout of the signal wires is guided on the premise that the signal wires are correctly connected. By implementing the technical scheme provided by the invention, the occupied space of the signal line can be effectively saved, the effective display area of the AMOLED display screen with the drilled holes can be increased, and the display quality can be improved.
It should be noted that the terms and words used in the above description and claims are not limited to literal meanings, but are only used by the inventors to clearly and consistently understand the present disclosure. Accordingly, it should be apparent to those skilled in the art that the descriptions of the various embodiments of the present disclosure are provided for illustration only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.
It should be understood that the singular forms "a", "an" and "the" include plural forms unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more such surfaces.
The term "actual" means that the feature, parameter, or value described is not necessarily precisely implemented, but rather may be quantitatively present including deviations or variations such as tolerances, measurement errors, measurement accuracy limitations and other factors known to those of skill in the art that do not preclude the effects that the feature is intended to provide.
The terms "comprises," "comprising," and the like, as used herein, are intended to specify the presence of stated features, operations, elements, etc., and are not to limit the presence of one or more other features, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, but does not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combination thereof.
Although terms such as "first" and "second" may modify various elements of various embodiments of the present disclosure, these terms do not limit the corresponding elements. For example, these terms do not limit the order and/or importance of the corresponding elements. These terms may be used to distinguish one element from another element. For example, the first user device and the second user device are both user devices, but they are indicative of different user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.
When an element (e.g., a first element) is "connected to" or "and … (operatively or communicatively) coupled/(operatively or communicatively) coupled to" another element (e.g., a second element), the first element may be directly connected or coupled to the second element, and there may be intermediate elements (e.g., third elements) between the first element and the second element. In contrast, when an element (e.g., a first element) is "directly connected" or "directly coupled" to another element (e.g., a second element), there are no intervening elements (e.g., a third element) between the first and second elements.
The expression "configured to (or arranged to)" as used herein may be exchanged with "adapted to", "having … capabilities," designed to "," adapted to "," manufactured to "or" capable of "as appropriate. The term "configured to" may not necessarily mean "specifically designed for" in terms of hardware. Conversely, the expression "an apparatus configured as …" may mean that the apparatus is "capable of …" along with other devices or components in some cases. For example, a "processor configured (arranged) to perform A, B and C" may be a dedicated processor (e.g., an embedded processor) for performing the corresponding operations, or a general-purpose processor (e.g., a Central Processing Unit (CPU) or an Application Processor (AP)) that performs the corresponding operations by executing one or more software programs stored in a storage device.
The terminology used herein is for the purpose of describing particular embodiments of the disclosure only and is not intended to be limiting of the disclosure. Furthermore, unless the context clearly indicates otherwise, the terms used herein (including technical and scientific terms) should be understood to have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs and should not be understood to have an ideal or excessively formal meaning.
AMOLED according to various embodiments of the present disclosure may be applied to various electronic devices, and may include at least one of: smart phones, tablet Personal Computers (PCs), mobile phones, video phones, e-book readers, desktop PCs, laptop PCs, netbook computers, workstations, servers, personal Digital Assistants (PDAs), portable Multimedia Players (PMPs), moving picture experts group phase 1 or phase 2 (MPEG-1 or MPEG-2) audio layer 3 (MP 3) players, ambulatory medical devices, cameras, or wearable devices. The wearable device includes, but is not limited to, a head-mounted device, electronic glasses, electronic clothing, electronic bracelets, electronic necklaces, electronic accessories, electronic tattoos, smart mirrors, smart watches, and the like.
The electronic device may also be a smart home device. For example, the smart home device may include at least one of: television (TV), digital Video Disc (DVD) player, audio equipment, refrigerator, air conditioner, vacuum cleaner, oven, microwave, washing machine, air cleaner, set top box, home automation panel, security control panel, TV box (e.g., samsung HomeSync, apple TV or Google TV), game console (e.g., xbox and PlayStation), electronic dictionary, electronic key, camera, electronic photo frame, and the like.
The electronic devices may also include at least one of medical devices (e.g., ambulatory medical instruments (e.g., blood glucose monitors, heart rate monitors, blood pressure monitors, thermometers, etc.), magnetic resonance imaging (MRA) machines, magnetic Resonance Imaging (MRI) machines, computed Tomography (CT) scanners, ultrasound devices, etc.), navigation systems, global Positioning System (GPS) receivers, event Data Recorders (EDRs), flight Data Recorders (FDRs), in-vehicle entertainment devices, marine electronic components (e.g., marine navigation components and/or compasses), aerospace devices, security devices, vehicle head units, industrial or home robots, automated Teller Machines (ATMs), POS devices, or Internet of things devices (e.g., light bulbs, various sensors, electronic meters, gas meters, water devices, fire alarm devices, thermostats, street lights, toasters, sports devices, hot water kettles, heaters, boilers, etc.).
The electronic device may further comprise at least one of: a portion of a piece of furniture or building/structure, an electronic bulletin board, an electronic signature receiving device, a projector, and a variety of measurement devices (e.g., a water meter, an electricity meter, a gas meter, or a wave meter, etc.). Further, the electronic device may be a combination of one or more of the above devices.
Furthermore, it should be clear to a person skilled in the art that: the electronic apparatus is not limited to the above-described apparatus.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (8)
1. An AMOLED display screen, comprising, in order from outside to inside: the display screen comprises a display screen outer edge, an effective display area, a wiring area, a Frit packaging area and a drilling area positioned in the middle of the AMOLED display screen;
The effective display area is distributed with pixel circuits and is used for displaying information of the AMOLED display screen; each path of pixel circuit leading-out multipath signal lines are respectively arranged on different metal layers of the wiring area along a preset direction; the wiring directions of the metal layers on the same surface in the wiring area are the same, the wiring directions of the metal layers on different surfaces are different, and a designated interval is reserved among the signal wires in the metal layers on the same surface; the metal layers in the wiring area are isolated by an insulating layer, and designated signal wires of the metal layers are electrically connected by a via hole;
The Frit encapsulation region is disposed between the drilling region and the wiring region, for preventing oxidation corrosion of the light emitting device of the effective display region;
The drilling area is used for installing a functional device associated with display information of the AMOLED display screen;
the wiring area comprises a first metal layer and a second metal layer from bottom to top;
Each path of multi-path signal lines led out by the pixel circuit comprises: a plurality of scan signal lines arranged in a horizontal direction on the first metal layer, a plurality of data signal lines arranged in a vertical direction on the second metal layer, and a plurality of power signal lines;
The scanning signal line is used for connecting scanning switch signals for all sub-pixels in the pixel circuit;
the data signal line is used for providing data voltages for the pixel circuits so as to control transmission of specified digital signals;
The power signal line is used for providing power voltage for the pixel circuit;
A third metal layer is arranged on the second metal layer;
the power signal line is led from the second metal layer to the third metal layer through a via hole and is connected in a whole circle between the effective display area and the Frit encapsulation area.
2. The AMOLED display of claim 1, wherein a via between the second metal layer and the third metal layer for guiding the power signal line is disposed at an interface between the routing area and the active display area.
3. The AMOLED display of claim 1, wherein each of said plurality of signal lines is routed from said pixel circuit, further comprising: a restart signal line, a light emitting signal line, and an initialization signal line arranged in a horizontal direction on the first metal layer;
The restarting signal line is used for resetting the current working state of the AMOLED display screen;
the luminous signal line is used for controlling each sub-pixel in the pixel circuit to be switched on or off and outputting required screen display information;
the initialization signal line is used for presetting working parameters of the AMOLED display screen.
4. The AMOLED display of claim 1, wherein the footprint of said routing area is proportional to the number of pixels from which said active display area is drawn.
5. The AMOLED display of claim 1, wherein said pixel circuit is comprised of a plurality of TFT thin film transistors and a storage capacitor.
6. The AMOLED display of claim 1, wherein one or more of said active display area, said routing area and said Frit encapsulation area are annular areas.
7. The AMOLED display of claim 1, wherein one or more of said active display area, said routing area and said Frit encapsulation area are rectangular areas.
8. An AMOLED display screen wiring method, which is applied to the AMOLED display screen according to any one of claims 1 to 7, comprising:
extracting a pixel circuit between the effective display area and the Frit packaging area to form a wiring area;
Constructing a plurality of metal layers on the wiring region;
respectively etching multiple paths of signal lines led out by a pixel circuit of an effective display area on different metal layers of the wiring area along a preset direction; the wiring directions of the metal layers on the same surface in the wiring area are the same, the wiring directions of the metal layers on different surfaces are different, and a designated interval is reserved among the signal wires in the metal layers on the same surface;
The metal layers in the wiring area are isolated by an insulating layer, and designated signal wires of the metal layers are electrically connected by a via hole.
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| CN201710792221.0A CN107689196B (en) | 2017-09-05 | 2017-09-05 | AMOLED display screen and wiring method thereof |
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| JP6872571B2 (en) * | 2018-02-20 | 2021-05-19 | セイコーエプソン株式会社 | Electro-optics and electronic equipment |
| CN113555375A (en) * | 2018-02-22 | 2021-10-26 | 群创光电股份有限公司 | Display device |
| CN108615745B (en) * | 2018-04-25 | 2020-11-17 | 云谷（固安）科技有限公司 | Display panel, manufacturing method thereof and display terminal |
| CN108957890B (en) * | 2018-07-27 | 2021-07-16 | 厦门天马微电子有限公司 | Display panel and display device |
| CN108957888B (en) * | 2018-07-27 | 2021-07-16 | 厦门天马微电子有限公司 | Display panel and display device |
| CN111863833B (en) * | 2019-04-30 | 2024-03-29 | 成都辰显光电有限公司 | Driving back plate structure, display panel and manufacturing method of driving back plate structure |
| CN110780501B (en) * | 2019-11-29 | 2022-04-19 | 武汉天马微电子有限公司 | Display panel and display device |
| CN212161815U (en) * | 2020-04-21 | 2020-12-15 | 华为技术有限公司 | Terminal device and display panel thereof |
| CN111710240A (en) * | 2020-06-24 | 2020-09-25 | 昆山国显光电有限公司 | Pixel circuit structure and display panel |
| CN112562586B (en) | 2020-08-28 | 2022-10-25 | 京东方科技集团股份有限公司 | Display panel and display device |
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| CN206331213U (en) * | 2016-11-03 | 2017-07-14 | 信利半导体有限公司 | One kind drilling display panel |
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| TWI643015B (en) * | 2014-11-14 | 2018-12-01 | 元太科技工業股份有限公司 | Manufacturing method of display panel |
| CN103676382B (en) * | 2013-12-26 | 2017-03-08 | 京东方科技集团股份有限公司 | Array base palte and display device |
| CN205004335U (en) * | 2015-06-29 | 2016-01-27 | 信利（惠州）智能显示有限公司 | Amoled display panel |
| CN105137632B (en) * | 2015-09-08 | 2017-07-04 | 京东方科技集团股份有限公司 | Display panel and display device |
| KR102430429B1 (en) * | 2015-09-09 | 2022-08-09 | 삼성디스플레이 주식회사 | Display apparatus |
| KR101717655B1 (en) * | 2015-11-30 | 2017-03-17 | 엘지디스플레이 주식회사 | Different form of display device having hole |
| KR102476563B1 (en) * | 2015-12-01 | 2022-12-12 | 엘지디스플레이 주식회사 | Display device |
| JP6646473B2 (en) * | 2016-02-25 | 2020-02-14 | 株式会社ジャパンディスプレイ | Display device and method of manufacturing display device |
| CN206115106U (en) * | 2016-11-03 | 2017-04-19 | 信利半导体有限公司 | Drilling display panel |
| CN206242670U (en) * | 2016-11-17 | 2017-06-13 | 信利半导体有限公司 | A kind of silk-screen half tone |
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