WO2022134435A1 - 显示面板和显示装置 - Google Patents

显示面板和显示装置 Download PDF

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Publication number
WO2022134435A1
WO2022134435A1 PCT/CN2021/094371 CN2021094371W WO2022134435A1 WO 2022134435 A1 WO2022134435 A1 WO 2022134435A1 CN 2021094371 W CN2021094371 W CN 2021094371W WO 2022134435 A1 WO2022134435 A1 WO 2022134435A1
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WO
WIPO (PCT)
Prior art keywords
signal
display panel
traces
dummy
base substrate
Prior art date
Application number
PCT/CN2021/094371
Other languages
English (en)
French (fr)
Inventor
樊聪
王玉
仝可蒙
何帆
马宏伟
董向丹
马倩
张元其
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/753,944 priority Critical patent/US11874990B2/en
Priority to DE112021001979.1T priority patent/DE112021001979T5/de
Priority to CN202180001181.8A priority patent/CN115210677A/zh
Publication of WO2022134435A1 publication Critical patent/WO2022134435A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0404—Signs, boards or panels, illuminated from behind the insignia the light source being enclosed in a box forming the character of the sign
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
    • 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
    • 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
    • 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
    • H10K59/40—OLEDs integrated with touch screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0404—Matrix technologies
    • G09G2300/0413—Details of dummy pixels or dummy lines in flat panels
    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
    • 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
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a display panel and a display device including the display panel.
  • a display device applying touch technology usually includes a touch IC chip (also called a touch controller), which is used to send control signals to the touch electrodes in the display device or receive sensing signals from the touch electrodes to determine the user touch position.
  • a touch IC chip also called a touch controller
  • Embodiments of the present disclosure provide a display panel, including: a base substrate, the base substrate including a display area and a non-display area outside the display area; touch electrodes located on the base substrate , the touch electrodes are located in the display area; and a plurality of signal wirings electrically connected to the touch electrodes, the plurality of signal wirings are distributed in the non-display area, and the non-display area including a light reflecting concavo-convex area, the light emitting concavo-convex area including a reflective material layer on the base substrate, the reflective material layer having a concavo-convex surface away from the base substrate, the display panel further comprising A light-reduction structure in a non-display area, the light-reduction structure being located above the reflective material layer and configured at least to reduce reflected light from a concave-convex surface of the reflective material layer, wherein the light-reduction structure is the same as the A plurality of signal traces and the touch electrodes are separated from each other.
  • an orthographic projection of at least a portion of the light-reducing structure on the base substrate at least partially overlaps an orthographic projection of the reflective material layer on the base substrate.
  • the touch electrodes include a plurality of first touch electrodes arranged in parallel and a plurality of second touch electrodes arranged in parallel, the plurality of first touch electrodes and the plurality of The second touch electrodes cross each other, wherein the plurality of signal wires include a plurality of first signal wires respectively connected to the plurality of first touch electrodes and a plurality of first signal wires respectively connected to the plurality of second touch electrodes multiple second signal traces of
  • the light reduction structure includes at least one first dummy wire, and the first dummy wire is located between the plurality of first signal wires and the plurality of second signal wires.
  • the light reduction structure includes at least one second dummy trace, and the second dummy trace is located closest to the touch control among the touch electrodes and the plurality of signal traces between the signal traces of the electrodes.
  • the display panel further includes a pixel circuit within the display region, wherein the reflective material layer includes a DC voltage bus configured to transmit a DC voltage for the pixel circuit .
  • the display panel further includes a plurality of data signal lines configured to transmit data signals to the pixel circuits, the plurality of data signal lines extending to the non-display area and at the backing between the base substrate and the DC voltage bus bar, wherein at least a part of the data signal lines of the plurality of data signal lines are displaced from each other in a direction parallel to the bottom surface of the base substrate, so that the DC voltage bus bar has A concave-convex surface facing away from the base substrate.
  • an orthographic projection of at least a portion of the plurality of second signal traces on the base substrate partially overlaps an orthographic projection of the DC voltage bus bar on the base substrate.
  • a slope angle between a convex surface of the concave-convex surface of the DC voltage bus bar facing away from the base substrate and the base substrate is between 30-60 degrees.
  • the display panel further includes a touch controller, each of the plurality of first signal traces includes a first segment and a second segment, the first segment The segment and the second segment are respectively connected to the first end and the second end of the corresponding first touch electrodes among the plurality of first touch electrodes, and the first end is more distant from the second end.
  • the first touch electrodes are electrically connected to the touch controller via the first segment and the second segment, each of the plurality of second touch electrodes
  • the second touch electrodes are electrically connected to the touch controller through the corresponding second signal traces in the plurality of second signal traces, wherein at least a part of the second signal traces in the plurality of second signal traces
  • the lines are bent and extended in the non-display area, so that each second signal line electrically connected to the touch controller has a consistent length, and the at least one first dummy line is in the first signal line between the second segment of the trace and the at least a portion of the second signal trace.
  • a plurality of the first dummy traces are spaced apart from each other and evenly distributed between the first signal trace and the second signal trace, wherein each of the first dummy traces
  • the ratio between the width of , and the spacing between the first dummy traces in the plurality of first dummy traces is greater than or equal to 1.
  • a ratio between the width of each first dummy trace and the spacing between the first dummy traces in the plurality of first dummy traces is greater than or equal to 2.
  • each of the first dummy lines in the plurality of first dummy lines is parallel to the first signal line and the second signal line closest to the display area. The edge of the line extends.
  • the plurality of first signal traces are spaced apart from each other and uniformly distributed in the non-display area
  • the plurality of second signal traces are spaced apart from each other and uniformly distributed in the non-display area.
  • the ratio between the width of each first signal trace and the spacing between the first signal traces in the plurality of first signal traces is greater than or equal to 1
  • each second signal trace is The ratio between the width of the line and the spacing between the second signal lines in the plurality of second signal lines is greater than or equal to 1.
  • the width of each of the first signal traces, each of the second signal traces, and each of the first dummy traces is between 3 and 50 microns, and the width between the first signal traces is between 3 and 50 microns.
  • the spacing, the spacing between the second signal traces, and the spacing between the first dummy traces are between 4 and 30 microns.
  • At least one of the first dummy trace, the first signal trace, and the second signal trace includes a first metal wire, a second metal wire, and a An insulating layer between a metal line and a second metal line, the insulating layer including a via hole, and the first metal line is electrically connected to the second metal line via the via hole in the insulating layer.
  • materials of the plurality of signal traces and the light reduction structure include at least one of molybdenum, aluminum, titanium, molybdenum alloy materials, aluminum alloy materials, and titanium alloy materials.
  • the display panel includes an encapsulation layer located in the non-display area, the encapsulation layer is located between the DC voltage bus bar and the plurality of signal traces, wherein the encapsulation layer at least It includes a first inorganic encapsulating material layer, a second inorganic encapsulating material layer, and an organic material encapsulating layer located between the first inorganic encapsulating material layer and the second inorganic encapsulating material layer.
  • the display panel further includes an encapsulation dam on the base substrate, the encapsulation dam extending around the display area in the non-display area, wherein the light reduction structure is in the between the packaging dam and the display area.
  • the display panel includes a pixel structure layer located in the display area, the pixel structure layer is located between the touch electrodes and a base substrate, and the pixel structure layer includes an anode, A cathode and an organic light-emitting layer between the anode and the cathode.
  • the etching uniformity in the etching process for the metal film layer during the process of manufacturing the display panel can be promoted, so that the manufactured display can be improved.
  • the touch performance of the panel or the display device is also beneficial to alleviate or prevent the phenomenon of bright spots or bright lines occurring in the non-display area.
  • FIG. 1 schematically shows a distribution diagram of signal wirings and dummy wirings in a display panel according to an embodiment of the present disclosure
  • FIG. 2 illustrates a top view and a partial perspective view of a display panel according to another embodiment of the disclosure
  • FIG. 3 shows a partial cross-sectional view of a non-display area of a display panel according to another embodiment of the present disclosure
  • FIG. 4 illustrates a partial perspective view of a display panel according to another embodiment of the present disclosure
  • FIG. 5 illustrates a partial cross-sectional view of the display panel shown in FIG. 4 taken along the line A1-A2 in FIG. 4;
  • FIG. 6 illustrates an enlarged schematic view of a dotted ellipse portion in the display panel shown in FIG. 2;
  • Fig. 7 illustrates the width of the first dummy trace and the spacing between the plurality of first dummy traces
  • FIG. 8 illustrates a light mirror diagram of a partial non-display area of a display panel provided according to another embodiment of the present disclosure
  • FIG. 9 illustrates a partial cross-sectional view of the display panel shown in FIG. 8 taken along the line A1-A2 in FIG. 8;
  • FIG. 10 illustrates a cross-sectional view of a base substrate of a display panel and data signal lines on the base substrate.
  • some metal traces are usually arranged, and these metal traces electrically connect the touch controller and the touch electrodes in the display device. These metal traces are drawn from the terminals of the touch controller and extend to the touch electrodes through the non-display area of the display device.
  • the inventors of the present application found that the process of fabricating these metal traces may have factors that lead to the degradation of the touch performance of the display device. Specifically, the metal traces located at the periphery of the display area of the display device are not always uniformly distributed in the non-display area.
  • metal traces may be distributed outside two or three of the four edges of the rectangular display area, and there is no metal trace on the periphery of one edge of the display area , or, a part of the non-display area surrounding the rectangular display area is a blank area without metal wiring.
  • the inventor realized that in the process of fabricating these metal traces in the non-display area, it is difficult to ensure the etching uniformity of the metal film layer, and this uneven etching of the metal film layer is a contact that affects the display device. a factor in control performance.
  • an embodiment of the present disclosure provides a display panel to improve the touch performance of a touch display device.
  • a display panel provided according to an embodiment of the present disclosure includes a base substrate, a touch electrode, a plurality of signal wires, and at least one dummy wire.
  • the base substrate of the display panel includes a display area A and a non-display area outside the display area A, and the touch electrodes are disposed on the base substrate and located in the display area A.
  • the display panel further includes a plurality of signal traces (eg, a first signal trace T1 and a second signal trace T2 ).
  • the signal traces T1 and T2 are electrically connected to the touch electrodes to transmit touch signals to the touch electrodes.
  • the display panel further includes at least one dummy trace between at least a part of the plurality of signal traces T1 and T2, and the dummy trace and the plurality of signal traces are separated from each other.
  • FIG. 1 shows a dummy trace DT1 between the first signal trace T1 and the second signal trace T2, a dummy trace DT2 between the first signal trace T1, or between the second signal trace T2 .
  • OB in FIG. 1 represents the outer boundary of the non-display area.
  • dummy lines refer to those that do not play a role in the operation of the display panel or the display device. Traces for signal transmission, these dummy traces are not connected to the display panel or any other electrical components of the display device, do not receive any electrical signals during the operation of the display device, or some or all of these dummy traces Only electrically connected to a fixed potential (eg, ground potential).
  • a fixed potential eg, ground potential
  • the plurality of mutually independent dummy traces may present any pattern, and the embodiments of the present disclosure do not impose any restrictions on the pattern of each dummy trace in various types of dummy traces and the overall pattern of the plurality of dummy traces.
  • a plurality of dummy lines can be made simultaneously. These dummy traces together with the signal traces make the material of the finally formed metal traces more uniformly distributed on the periphery of the display area. Accordingly, in the process of making the signal traces and the outer dummy traces, the etching of the metal film layer The uniformity is improved, which is beneficial to improve the touch performance of the fabricated display panel or display device.
  • additional dummy traces DT are also shown, and the dummy traces DT are distributed between the outer boundary OB of the non-display area and the area where the plurality of signal traces are located. Likewise, these dummy traces DT can further improve the touch uniformity of the display panel or the display device.
  • the inventors of the present application further found in practice that when the display panel is viewed from certain angles, some areas in the non-display area are perceived to appear brighter than other areas in the non-display area, which visually form “bright lines” "or "bright spot", although the area of this "bright line” or “bright spot” is small, it also affects the appearance of the display product to some extent, and even interferes with the user's viewing of the display screen, reducing the user's interest in the display device. Use experience.
  • FIG. 2 also illustrates a partial perspective view of the display panel to schematically illustrate the touch electrodes and signal traces connected to the touch electrodes. As shown in the left diagram in FIG.
  • the touch electrodes include parallel A plurality of first touch electrodes Rx and a plurality of second touch electrodes Tx arranged in parallel, the plurality of first touch electrodes Rx and the plurality of second touch electrodes Tx cross each other, correspondingly, the
  • the plurality of signal wires include a plurality of first signal wires T11 and T12 respectively connected to the plurality of first touch electrodes Rx and a plurality of second signal wires respectively connected to the plurality of second touch electrodes Tx T2.
  • Both the first touch electrodes Rx and the second touch electrodes Tx shown in FIG. 2 include diamond-shaped touch electrode blocks, and a plurality of diamond-shaped touch electrode blocks can be bridged by connecting wires to form a first touch electrode or a first touch electrode.
  • each of the first touch electrodes Rx and each of the second touch electrodes Tx can also be implemented in a strip shape.
  • the specific form of the electrode is not limited in any way.
  • the bright line area B1 is between the first signal trace T12 and the second signal trace T2, that is, there is a large amount of space between the first signal trace T12 and the second signal trace T2.
  • blank area Display devices often include reflective materials that reflect light. This relatively large blank area may allow a large amount of light reflected by the reflective material to exit outward. Therefore, when the human eye views the display panel from certain angles , the bright spots or bright lines described above are perceived.
  • first touch electrodes and “second touch electrodes” mentioned in this article may refer to the receiving electrodes and the transmitting electrodes, respectively.
  • the receiving electrodes and the transmitting electrodes are insulated from each other and can generate mutual capacitance.
  • the The touch controller may transmit control signals to the transmitting electrodes and receive sensing signals from the receiving electrodes, whereby the user's touch position may be determined based on changes in mutual capacitance.
  • the touch electrodes can also be structured based on the principle of self-capacitance sensing. The specific arrangement and structure of the touch electrodes are not the focus and key of the present invention, and will not be described in detail here.
  • FIG. 3 illustrates a partial cross-sectional view of a non-display area of a display panel according to another embodiment of the present disclosure.
  • the non-display area of the display panel includes a light reflection concavo-convex area
  • the light emitting concavo-convex area includes a reflective material layer RF on the base substrate
  • the reflective material layer RF has a concavo-convex surface away from the base substrate.
  • FIG. 3 Also shown in FIG. 3 are the first signal trace T1, the second signal trace T2, and other signal traces (eg, data signal traces DL), and the base substrate is not shown in FIG. 3, which is located on the data signal traces Below the DL, various structures such as the data signal line DL and the reflective material layer RF are supported.
  • the data signal line DL, the reflective material layer RF, and the first signal line T1 and the second signal line T2 are isolated by an insulating layer INS.
  • the signal lines (eg, data signal lines DL) on the base substrate cannot be arranged flatly on the base substrate.
  • different signal lines are misaligned with each other, or, in a vertical direction perpendicular to the bottom surface of the base substrate, there is a height difference between different signal lines.
  • the other layers above these signal lines cannot also be realized with flat surfaces, but with uneven surfaces.
  • the inventors of the present application realized that the reflective material layer RF covering the data signal line DL shown in FIG. 3 has a concavo-convex surface facing away from the base substrate, which further facilitates or exacerbates the occurrence of the above-mentioned bright lines or bright spots.
  • the non-display area of the display panel includes a blank area between the first signal trace T1 and the second signal trace T2 , and natural light incident on the blank area from different angles will have different effects on human eyes.
  • natural light Light 1 shown by the light-colored arrow in FIG. 3 it is incident under the first signal trace T1, and is reflected between the first signal trace T1 and the reflective material layer RF.
  • the presence of line T1 is not or less perceptible by the human eye.
  • the natural light Light 2 shown by the dark arrow it is incident on the blank area between the first signal trace T1 and the second signal trace T2, and the natural light Light 2 will be reflected by the uneven upper surface of the reflective material layer RF.
  • the display panel is thus perceived by the human eye, and the uneven upper surface of the reflective material layer RF may cause obvious light interference effect, so that the human eye can observe more obvious bright spots or bright lines.
  • a display panel provided according to another embodiment of the present disclosure includes: a base substrate including a display area and a non-display area outside the display area; a touch panel on the base substrate control electrodes, the touch electrodes are located in the display area; and a plurality of signal wires electrically connected to the touch electrodes, the plurality of signal wires are distributed in the non-display area, the non-display areas are
  • the display area includes a light-reflecting concavo-convex area, the light-emitting concave-convex area includes a reflective material layer on the base substrate, the reflective material layer has a concavo-convex surface away from the base substrate, and the display panel further includes a reflective material layer located on the base substrate.
  • the light reduction structure in the non-display area the light reduction structure is located above the reflective material layer and is at least configured to reduce reflected light from the uneven surface of the reflective material layer, and the light reduction structure is related to the light reduction structure.
  • the plurality of signal traces and the touch electrodes are separated from each other.
  • the orthographic projection of at least a portion of the light-reducing structure on the base substrate at least partially overlaps the orthographic projection of the layer of reflective material on the base substrate.
  • the touch electrodes include a plurality of first touch electrodes arranged in parallel and a plurality of second touch electrodes arranged in parallel, the plurality of first touch electrodes and the plurality of second touch electrodes
  • the touch electrodes cross each other, wherein the plurality of signal wires include a plurality of first signal wires respectively connected to the plurality of first touch electrodes and a plurality of first signal wires respectively connected to the plurality of second touch electrodes.
  • the light reduction structure includes at least one first dummy trace, and the first dummy trace is located between the plurality of first signal traces and the plurality of second signal traces .
  • the first dummy wiring can block at least a part of the reflected light emitted from the blank area, thereby reducing or avoiding the above-mentioned "bright line” or “bright spot” phenomenon, and improving the appearance of the display device and the user experience of the display device.
  • the first dummy wiring also improves the etching uniformity of the metal film layer in the process of fabricating the signal wiring, thereby improving the touch uniformity of the display device.
  • FIG. 4 illustrates a partial perspective view of a display panel provided according to another embodiment of the present disclosure, so as to schematically illustrate the signal wirings and the first dummy wirings around the touch electrodes.
  • the layouts of the first signal wiring and the second signal wiring shown in FIG. 4 are similar to those shown in FIG. 2 .
  • the first dummy trace DT1 (shown by the dark line in FIG. 4 ) is arranged between the second signal trace T2 and the first signal traces T11 and T12 .
  • the region where the first dummy trace DT1 is located may correspond to the region B1 shown in FIG. 2 .
  • FIG. 5 illustrates a partial cross-sectional view taken along the line A1-A2 in the region where the first dummy trace DT1 in FIG. 4 is located.
  • the reflective material layer in the non-display area includes a DC voltage bus VDD configured to transmit a DC voltage for pixel circuits within the display area of the display panel.
  • the DC voltage bus VDD occupies a larger area, which is suitable for providing driving current to the pixel circuits in the display area in a concentrated manner, and is beneficial to avoid damage due to the larger driving current. It can be seen in conjunction with FIG. 4 and FIG.
  • the first dummy trace DT1 is arranged above the DC voltage bus VDD, and the orthographic projection of at least a part of the first dummy trace DT1 on the substrate is at the same level as the DC voltage bus VDD.
  • the orthographic projections on the base substrate at least partially overlap.
  • FIG. 5 due to the existence of the first dummy trace DT1, only a small part of Light 3 incident on the non-display area is reflected, and the strong interference effect as shown in FIG. 3 will not occur. Therefore, The amount of reflected light from the DC voltage bus VDD perceived by the human eye is greatly reduced, thereby reducing or even avoiding the occurrence of the above-mentioned bright lines or bright spots.
  • each of the first dummy traces DT1 in the plurality of first dummy traces DT1 is parallel to the first signal trace and the second signal trace closest to the display area. The edge of the line extends.
  • the display panel includes a plurality of data signal lines DL, the data signal lines DL are configured to transmit data signals to the pixel circuits in the display area, and the data signal lines DL extend to the non-display area, and located between the base substrate and the DC voltage bus VDD, at least a part of the data signal lines in the plurality of data signal lines are arranged in a direction parallel to the bottom surface of the base substrate with offset from each other, so that the DC voltage bus VDD Has a concavo-convex surface facing away from the base substrate. Further, the orthographic projection of at least a part of the second signal trace T2 on the base substrate partially overlaps with the orthographic projection of the DC voltage bus VDD on the base substrate.
  • FIG. 5 and FIG. 3 are mainly used to illustrate the structures of the DC voltage bus VDD, the data line DL, the first dummy line DT1, the first signal line and the second signal line, etc. Structures in the display panel that are less relevant to the problem to be solved here are omitted, and therefore, FIGS. 5 and 3 do not imply the entire structure of the display panel.
  • the light reduction structure includes at least one second dummy trace, and the second dummy trace is located closest to the touch electrode among the touch electrodes and the plurality of signal traces between the signal traces.
  • Fig. 6 schematically shows an enlarged view of the dotted ellipse region shown in Fig. 2 .
  • the light reduction structure includes at least one second dummy wire DT3, and the second dummy wire DT3 is located between the touch electrode and the signal wire closest to the touch electrode among the plurality of signal wires.
  • the second dummy trace DT3 can at least achieve similar effects to the above-mentioned first dummy trace DT1.
  • each of the first signal traces includes a first segment T11 and a second segment T12 , and the first segment T11 and the second segment T12 are respectively associated with a plurality of first segments T11 and T12 .
  • the first end and the second end of the corresponding first touch electrodes Rx in the touch electrodes are connected, and the first end is farther away from the touch controller than the second end, and the first touch electrodes pass through the first segment T11 and the second end.
  • the segment T12 is electrically connected to the touch controller, and each second touch electrode Tx is electrically connected to the touch controller via a corresponding second signal trace T2 of the plurality of second signal traces.
  • the first touch electrodes and the second touch electrodes each include a plurality of touch electrode blocks, and all the touch electrode blocks can form a touch electrode block array.
  • the touch electrode blocks in each row of touch electrode blocks are sequentially connected to form a second touch electrode Tx, and the touch electrode blocks in each column of touch electrodes are sequentially connected to form a first touch electrode Rx.
  • the touch controller is not shown in FIG. 2 , the touch controller may be located on the same side of the base substrate as the touch electrodes, and below the first signal trace and the second signal trace shown in FIG.
  • the touch controller and the touch electrodes may also be arranged opposite to each other.
  • the base substrate may be a flexible base substrate, and the non-display area of the flexible base substrate may be bent to form a curved portion opposite to the touch electrodes.
  • the touch controller can be arranged on the curved portion so as to be opposite to the touch electrodes, that is, the touch controller is hidden on the back of the display panel, which is also beneficial to realize the narrowing of the frame of the display device.
  • the second signal traces T2 among the plurality of second signal traces is bent and extended in the non-display area, so as to be electrically connected to each of the touch controllers.
  • the second signal traces T2 have a uniform length, and the at least one first dummy trace is located between the second segment T12 of the first signal trace and the at least a portion of the second signal traces T2. More specifically, as shown in FIG. 2 , the second signal traces T2 connected to the second touch electrodes in each row extend to the non-display area, and some of the second signal traces connected to the second touch electrodes Tx close to the non-display area.
  • the line T2 (the distance between these second signal lines T2 and the touch controller is also relatively close) is greatly bent, and some of the second signal lines T2 ( These second signal traces T2 are also relatively far away from the touch controller) with a small bending amplitude or even no bending, so that each second signal trace T2 electrically connected to the touch controller can have the same
  • the length of avoids too large difference in resistance value between different second signal lines T2 , which is beneficial to the improvement of touch performance. It can be understood that the meaning of the "consistent length" mentioned in this article is that the length of each second signal trace is basically the same, or the difference in the length of each second signal trace is controlled to a small non-range. within (e.g. no more than 10% difference in length).
  • FIG. 2 schematically illustrates a region R where a part of the second signal line T2 of the second segment T12 extending in a curved manner and close to the first signal line is located, and the region R can also be called a second signal line.
  • a large blank area is often formed between the first signal trace and the second signal trace. Therefore, according to some embodiments of the present disclosure, As shown in FIG. 4 , at least one first dummy trace is included between the second segment of the first signal trace and the at least a part of the second signal trace. It should be understood that the distribution pattern of the first signal wiring and the second signal wiring shown in FIG.
  • the first signal wiring and the second signal wiring can be arranged in any other arrangement determined by those skilled in the art, as long as each touch electrode can be electrically connected to the touch controller.
  • a plurality of first dummy traces are spaced apart from each other and evenly distributed between the first signal trace and the second signal trace, and the width of each first dummy trace is the same as the width of the first dummy trace.
  • the ratio between the distances between the first dummy wires in the plurality of first dummy wires is greater than or equal to 1.
  • the width of the first dummy line mentioned here refers to the dimension of the first dummy line in a direction perpendicular to the extending direction of the first dummy line in a plane parallel to the bottom surface of the base substrate. Moreover, if the first dummy trace is bent in a plane parallel to the bottom surface of the base substrate, the direction of the "width" also changes with the bending. According to some embodiments of the present disclosure, the width of the first dummy traces is approximately 3 to 50 microns, and the spacing between the first dummy traces is approximately 4 to 30 microns. FIG.
  • the first signal traces, the second signal traces, and the first dummy traces have substantially equal widths, eg, the widths of each of the first signal traces and each of the second signal traces are between 3 and 50 microns.
  • the plurality of first signal lines are spaced apart from each other and evenly distributed in the non-display area, and the plurality of second signal lines are spaced apart from each other and evenly distributed in the non-display area, so as to facilitate Touch uniformity of the display panel.
  • the ratio between the width of each first signal trace and the spacing between the first signal traces in the plurality of first signal traces is greater than or equal to 1, and the width of each second signal trace is equal to the The ratio between the distances between the second signal lines in the plurality of second signal lines is greater than or equal to 1.
  • the ratio between the width of each first signal trace and the spacing between the first signal traces in the plurality of first signal traces is greater than or equal to 2
  • each second signal trace is The ratio between the width of the traces and the spacing between the second signal traces in the plurality of second signal traces is greater than or equal to 2.
  • the first signal traces By designing the first signal traces, the widths of the second signal traces, the spacing between the first signal traces, and the spacing between the second signal traces, the first signal traces can be prevented or mitigated Similar bright lines or bright spots may occur in the area where the second signal line is located, improving the user's experience of using the display device.
  • each of the first signal traces, the second signal traces, and the dummy traces may include more than two metal wires, and the metal wires may be electrically connected to each other. connected, but distributed in different layers to facilitate the reduction of the overall resistance of the trace.
  • at least one of the first dummy trace, the first signal trace, and the second signal trace includes a first metal wire, a second metal wire, and a first metal wire and an insulating layer between the insulating layer and the second metal line, the insulating layer including a via hole, and the first metal line is electrically connected to the second metal line via the via hole in the insulating layer.
  • the material used to make the first metal wire and the second metal wire includes at least one of titanium (Ti), aluminum (Al), molybdenum (Mo), and alloy materials of the aforementioned metal elements.
  • at least one of the first metal line and the second metal line includes an aluminum layer and titanium layers flanking the aluminum layer.
  • the first metal wire may include a Ti/Al/Ti three-layer metal structure
  • the second metal wire may also include a Ti/Al/Ti three-layer metal structure.
  • FIG. 8 illustrates a light microscope (optical microscope) view of a partial non-display area of a display panel, ie, a picture taken with an optical microscope, according to some embodiments of the present disclosure.
  • the light mirror map may substantially correspond to the partial non-display area shown in FIG. 4 .
  • FIG. 8 shows the first dummy wiring DT1, the first signal wiring T12, the second signal wiring T2, and the ink area OA, and the ink area OA covers a part of the signal wiring.
  • the display panel includes a base substrate BS, a data signal DL, a first insulating layer INS1, a DC voltage bus VDD, a second insulating layer INS2, a first inorganic packaging material layer INO1, an organic packaging material layer OL, a first Two inorganic packaging material layers INO2, a buffer layer BUF, a third insulating layer INS3, a first dummy wiring DT1, and a first signal wiring T12 and a second signal wiring T2.
  • the first signal trace T12 and the second signal trace T2 include a first metal wire, a second metal wire, and an insulating layer between the first metal wire and the second metal wire, the first metal wire The wires are electrically connected to the second metal wires via vias in the insulating layer.
  • the first dummy trace DT1 is a single-layer metal wire.
  • the display panel further includes an encapsulation layer, the encapsulation layer is located between the DC voltage bus VDD and the plurality of signal wires T2, T12, and the encapsulation layer at least includes a first inorganic encapsulation material layer INO1, a second The inorganic encapsulation material layer INO2, and the organic material encapsulation layer OL located between the first inorganic encapsulation material layer INO1 and the second inorganic encapsulation material layer INO2.
  • the encapsulation layer can provide encapsulation protection for each layer in the display area of the display panel.
  • the organic material encapsulation layer can play a role in stress relief, and the organic material encapsulation layer can be composed of the first inorganic encapsulation material layer INO1 and the second inorganic encapsulation material.
  • the layer INO2 is completely covered, thereby effectively preventing external water vapor and oxygen from entering the interior of the display panel, effectively improving the reliability and reliability of the display panel.
  • the display panel further includes an encapsulation dam on the base substrate, the encapsulation dam extends around the display area in the non-display area, and the light reduction structure is located between the encapsulation dam and the encapsulation dam. between the display areas.
  • the encapsulation dam may be within the ink area OA and covered by the ink material, and the number of encapsulation dams may be one or more.
  • the individual encapsulation dams may have the same or different film layer structures.
  • the encapsulation dam may include a protective portion and a blocking portion that are stacked in sequence.
  • the encapsulation dam may further include a support over the barrier.
  • At least one of the protection part, the blocking part and the supporting part may be in the same layer as a film layer in the display area of the display panel.
  • the blocking portion of the encapsulation dam may be in the same layer as the pixel defining layer.
  • the signal lines (eg, data signal lines DL) on the base substrate are not evenly arranged on the base substrate, in a vertical direction perpendicular to the bottom surface of the base substrate , there is a height difference between different signal lines.
  • FIG. 10 schematically shows a plurality of data signal lines DL on the base substrate BS. For simplicity, insulating layers between the data signal lines DL and other layers on the data signal lines DL are not drawn.
  • the data signal line DL is formed of the same material as the gate electrode of the thin film crystal of the display panel.
  • Each data signal line DL has a substantially equal width w1, the spacing S between adjacent data signal lines DL is smaller than the width w1 of a single data signal line DL, and the height difference d between adjacent data signal lines DL is smaller than that of adjacent data signal lines DL.
  • the distance S between the data signal lines DL, the height difference here refers to the difference between the vertical distances between the data signal lines and the upper surface of the base substrate.
  • the above-mentioned height difference d is about 4000 angstroms
  • the above-mentioned distance S is less than 1 micrometer, for example, 0.7 micrometers
  • the above-mentioned width w1 is twice the above-mentioned distance S, for example, 2 micrometers.
  • each data signal line DL has the same cross section.
  • the slope angle ⁇ of the data signal line DL is less than 60 degrees, for example, 55 degrees.
  • the aforementioned DC voltage bus VDD may also have a slope angle other than that shown in FIG. 3 .
  • the convex surface of the DC voltage bus bar facing away from the concave-convex surface of the base substrate may have a slope angle between the base substrate, and the slope angle may be between 30-60 degrees.
  • the meaning of the slope angle between the convex surface of the DC voltage bus bar facing away from the concave-convex surface of the base substrate and the base substrate can also be understood with reference to the slope angle ⁇ in FIG. 10 , which will not be repeated here.
  • the display panels mentioned in the above embodiments may be various types of display panels, including but not limited to, for example, organic light emitting diode (OLED) display panels, liquid crystal display (LCD) panels, and the like.
  • OLED organic light emitting diode
  • LCD liquid crystal display
  • the above-mentioned touch electrodes can be formed above the light-emitting layer. That is to say, the display panel also includes a pixel structure layer between the touch electrodes and the base substrate, and the pixel structure layer includes an anode, a cathode, and an organic light-emitting layer therebetween.
  • the display device can be any electronic device or component with a display function. Examples of the display device include but are not limited to mobile electronic devices, navigators, watches, printers, computers, PDAs, TVs, etc.

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Abstract

本公开实施例提供了一种显示面板和包括该显示面板的显示装置，该显示面板包括衬底基板、位于所述衬底基板上的触控电极、以及与所述触控电极电连接的多条信号走线。衬底基板包括显示区和处于显示区之外的非显示区，触控电极处于所述显示区内，所述多条信号走线分布在所述非显示区内。所述非显示区包括光反射凹凸区域，所述光发射凹凸区域包括位于所述衬底基板上的反射材料层，所述反射材料层具有背离所述衬底基板的凹凸表面。所述显示面板还包括处于所述非显示区内的光削减结构，所述光削减结构位于所述反射材料层的上方且至少被配置成减少来自所述反射材料层的凹凸表面的反射光，其中所述光削减结构与所述多条信号走线和所述触控电极彼此分离。

Description

显示面板和显示装置
相关的专利申请
本专利申请要求2020年12月25日向中国专利局提交的、申请号为202011558822.3的在先中国专利申请的优先权利益，在此通过引用的方式将该先中国专利申请的说明书内容并入本文。
技术领域
本公开涉及显示技术领域，特别地，涉及一种显示面板、包括该显示面板的显示装置。
背景技术
当前，触控技术已经普遍地应用到各种类型的显示装置中，例如，OLED触控显示装置、LCD触控显示装置，极大地提升了用户使用显示装置的体验。应用触控技术的显示装置通常包括触控IC芯片(也称为触摸控制器)，用于向显示装置中的触控电极发送控制信号或者接收来自于触控电极的感测信号，以确定用户的触摸位置。但是，对于现有的触控显示装置，触控性能和用户使用体验仍有较大的改进空间。
发明内容
本公开的实施例提供了一种显示面板，包括：衬底基板，所述衬底基板包括显示区和处于所述显示区之外的非显示区；位于所述衬底基板上的触控电极，所述触控电极处于所述显示区内；以及与所述触控电极电连接的多条信号走线，所述多条信号走线分布在所述非显示区内，所述非显示区包括光反射凹凸区域，所述光发射凹凸区域包括位于所述衬底基板上的反射材料层，所述反射材料层具有背离所述衬底基板的凹凸表面，所述显示面板还包括处于所述非显示区内的光削减结构，所述光削减结构位于所述反射材料层的上方且至少被配置成减少来自所述反射材料层的凹凸表面的反射光，其中所述光削减结构与所述多条信号走线和所述触控电极彼此分离。
根据本公开的一些实施例，所述光削减结构的至少一部分在所述衬底基板上的正投影与所述反射材料层在所述衬底基板上的正投影至 少部分重叠。
根据本公开的一些实施例，所述触控电极包括并行排列的多个第一触控电极和并行排列的多个第二触控电极，所述多个第一触控电极和所述多个第二触控电极相互交叉，其中所述多条信号走线包括分别与所述多个第一触控电极连接的多条第一信号走线和分别与所述多个第二触控电极连接的多条第二信号走线，
其中所述光削减结构包括至少一条第一虚设走线，所述第一虚设走线处于所述多条第一信号走线和所述多条第二信号走线之间。
根据本公开的一些实施例，所述光削减结构包括至少一条第二虚设走线，所述第二虚设走线处于所述触控电极和所述多条信号走线中最靠近所述触控电极的信号走线之间。
根据本公开的一些实施例，所述显示面板还包括处于所述显示区内的像素电路，其中所述反射材料层包括直流电压母线，所述直流电压母线被配置成为所述像素电路传输直流电压。
根据本公开的一些实施例，显示面板还包括被配置成向所述像素电路传输数据信号的多条数据信号线，所述多条数据信号线延伸至所述非显示区、且处于所述衬底基板和所述直流电压母线之间，其中所述多条数据信号线中的至少一部分数据信号线在平行于所述衬底基板的底表面的方向上彼此错位，使得所述直流电压母线具有背离所述衬底基板的凹凸表面。
根据本公开的一些实施例，所述多条第二信号走线中的至少一部分在所述衬底基板上的正投影与所述直流电压母线在所述衬底基板上的正投影部分重叠。
根据本公开的一些实施例，直流电压母线背离所述衬底基板的所述凹凸表面的凸面与所述衬底基板之间的坡度角在30-60度之间。
根据本公开的一些实施例，显示面板还包括触摸控制器，所述多条第一信号走线中的每条第一信号走线包括第一分段和第二分段，所述第一分段和所述第二分段分别与所述多个第一触控电极中相应的第一触控电极的第一端和第二端连接，所述第一端相对于所述第二端更远离所述触摸控制器，所述第一触控电极经由所述第一分段和所述第二分段电连接至所述触摸控制器，所述多个第二触控电极中的每个第二触控电极经由所述多条第二信号走线中相应的第二信号走线电连接 至所述触摸控制器，其中所述多条第二信号走线中的至少一部分第二信号走线在所述非显示区内弯折地延伸，使得电连接至所述触摸控制器的各条第二信号走线具有一致的长度，所述至少一条第一虚设走线处于所述第一信号走线的第二分段和所述至少一部分第二信号走线之间。
根据本公开的一些实施例，多条所述第一虚设走线彼此间隔且均匀地分布在所述第一信号走线和所述第二信号走线之间，其中每条第一虚设走线的宽度与所述多条所述第一虚设走线中各第一虚设走线之间的间距之间的比值大于等于1。
根据本公开的一些实施例，每条第一虚设走线的宽度与所述多条所述第一虚设走线中各第一虚设走线之间的间距之间的比值大于等于2。
根据本公开的一些实施例，所述多条所述第一虚设走线中的各第一虚设走线平行于所述显示区的最靠近所述第一信号走线和所述第二信号走线的边缘延伸。
根据本公开的一些实施例，所述多条第一信号走线彼此间隔、且均匀地分布在所述非显示区内，所述多条第二信号走线彼此间隔、且均匀地分布在所述非显示区内，每条第一信号走线的宽度与所述多条第一信号走线中各第一信号走线之间的间距之间的比值大于等于1，每条第二信号走线的宽度与所述多条第二信号走线中各第二信号走线之间的间距之间的比值大于等于1。
根据本公开的一些实施例，每条第一信号走线、每条第二信号走线、每条第一虚设走线的宽度在3至50微米之间，各第一信号走线之间的间距、各第二信号走线之间的间距、以及各第一虚设走线之间的间距在4至30微米之间。
根据本公开的一些实施例，所述第一虚设走线、所述第一信号走线、以及所述第二信号走线中的至少一个包括第一金属线、第二金属线、以及处于第一金属线和第二金属线之间的绝缘层，所述绝缘层包括过孔，所述第一金属线经由所述绝缘层中的过孔电连接至所述第二金属线。
根据本公开的一些实施例，述多条信号走线和所述光削减结构的材料包括钼、铝、钛、钼合金材料、铝合金材料、钛合金材料中的至 少一种。
根据本公开的一些实施例，所述显示面板包括位于所述非显示区的封装层，所述封装层处于所述直流电压母线和所述多条信号走线之间，其中所述封装层至少包括第一无机封装材料层、第二无机封装材料层、以及位于所述第一无机封装材料层和第二无机封装材料层之间的有机材料封装层。
根据本公开的一些实施例，所述显示面板还包括位于所述衬底基板上的封装坝，所述封装坝围绕所述显示区在所述非显示区内延伸，其中所述光削减结构处于所述封装坝和所述显示区之间。
根据本公开的一些实施例，所述显示面板包括位于所述显示区内的像素结构层，所述像素结构层处于所述触控电极和衬底基板之间，所述像素结构层包括阳极、阴极以及处于所述阳极和阴极之间的有机发光层。
本公开的另外的实施例提供了一种显示装置，其包括如前述实施例中任一实施例所述的显示面板。
通过在显示面板的非显示区布置本公开实施例所述的虚设走线，可以促进在制作显示面板过程中针对金属膜层的刻蚀工艺中的刻蚀均一性，从而可以提升所制作的显示面板或显示装置的触控性能，而且，这也利于缓解或防止非显示区中发生的亮点或亮线现象。
附图说明
图1示意性地示出了根据本公开的一个实施例的显示面板中的信号走线和虚设走线的分布图；
图2图示了根据公开的另一实施例的显示面板的俯视图以及局部透视图；
图3示出了根据本公开的另一实施例的显示面板的非显示区的局部截面图；
图4图示了根据本公开的另一实施例的显示面板的局部透视图；
图5图示了图4所示的显示面板沿着图4中的线A1-A2获得的局部截面图；
图6图示了图2所示的显示面板中的虚线椭圆部分的放大示意图；
图7图示了第一虚设走线的宽度以及多个第一虚设走线之间的间 距；
图8图示了根据本公开的另一实施例提供的显示面板的局部非显示区的光镜图；
图9图示了图8所示显示面板沿着图8中的线A1-A2获得的局部截面图；
图10图示了显示面板的衬底基板以及衬底基板上的数据信号线的截面图。
具体实施方式
下面，通过具体的示例详细说明本公开的一些实施例。应当理解到，下面描述的这些示例性实施例仅仅是为了解释和阐明本公开一些实施例的实现方式，并不表示真实显示面板或显示装置的结构，特别地，各个附图中所示的各类走线不代表实际产品中的走线的具体图案，而仅示意性地示出这些走线所处的位置以及与与显示面板的其他走线或区域的相对位置关系。而且，基于本文的描述的实施例和这些实施例所揭示的原理，本领域技术人员可以以其它不同的实施方式实施本公开，从而获得与这里描述的实施例不同的另外的实施例，这些另外的实施例同样属于本专利申请的保护范围。因此，本文所描述的示例性实施例不构成对本专利申请保护范围的限制。特别地，本文提到的诸如“上方”、“下方”之类的表示两个项目的位置关系的词语应基于附图中的示例来理解，“上方”或“下方”的含义并不限于“正上方”或“正下方”，只要两个项目的位置在垂直于衬底基板的底表面竖直方向上存在距离差，“上方”或“下方”即可适用于表述这两个项目之间的空间位置关系。
在触控显示装置的非显示区，通常布置有一些金属走线，这些金属走线将触摸控制器与显示装置中的触控电极电连接。这些金属走线从触摸控制器的端子引出，经由显示装置的非显示区延伸至触控电极。本申请的发明人发现，制作这些金属走线的过程可能存在导致显示装置的触控性能的降低的因素。具体地，处于显示装置的显示区外围的这些金属走线并不总是均匀地分布在非显示区内。例如，对于具有矩形显示区的显示装置而言，金属走线可能分布在该矩形显示区的四个边缘中的两个或三个边缘的外侧，而显示区的一个边缘的外围没有金 属走线，或者，环绕该矩形显示区的非显示区中的部分区域为不存在金属走线的空白区。发明人认识到，在制作非显示区的这些金属走线的过程中，难以保证针对金属膜层的刻蚀均一性，而且，这种对金属膜层的不均一刻蚀是影响显示装置的触控性能的一个因素。
鉴于上述的技术认知，本公开的一个实施例提出了一种显示面板，以促进触控显示装置的触控性能的提升。根据本公开实施例提供的显示面板包括衬底基板、触控电极、多条信号走线以及至少一条虚设走线。如图1所示，显示面板的衬底基板包括显示区A和处于显示区A之外的非显示区，触控电极设置于衬底基板上、且位于显示区A内。显示面板还包括多条信号走线(例如，第一信号走线T1、第二信号走线T2)，信号走线T1、T2与触控电极电连接以向触控电极传输触控信号。显示面板还包括处于多条信号走线T1、T2中的至少一部分信号走线之间的至少一条虚设走线，虚设走线与所述多条信号走线彼此分离。图1中示出了第一信号走线T1和第二信号走线T2之间的虚设走线DT1、第一信号走线T1之间、或者第二信号走线T2之间的虚设走线DT2。图1中的OB表示非显示区的外边界。
本文提到的“虚设走线”(包括下文其它实施例中将提到的“第一虚设走线”和“第二虚设走线”)指的是在显示面板或显示装置的运行中不起信号传输作用的走线，这些虚设走线不与显示面板或显示装置的任何其它电气元件连接，在显示装置的运行过程中不接收任何的电信号，或者，这些虚设走线中的一部分或者全部仅与固定电位(例如，接地电位)电连接。另外，互相独立的多条虚设走线可以呈现任何样式的图案，本公开的实施例对各类虚设走线中的每条虚设走线的图案以及多条虚设走线的整体图案不作任何限制。
对于本公开实施例提供的显示面板，在制作非显示区域的信号走线的同时，可同时制作出多条虚设走线。这些虚设走线与信号走线一起，使得最终形成的金属走线的材料更均匀地分布在显示区外围，相应地，在制作信号走线和外虚设走线的过程中，金属膜层的蚀刻均一性得以提升，从而有利于提升所制作的显示面板或显示装置的触控性能。在图1的示例中，还示出了另外的虚设走线DT，虚设走线DT分布在非显示区的外边界OB和所述多条信号走线所在的区域之间。同样地，这些虚设走线DT可以进一步提升显示面板或显示装置的触控均一 性。
本申请的发明人在实践中进一步发现，当从某些角度观看显示面板时，会感知到非显示区中的一些区域比非显示区中的其它区域显得更亮，从视觉上形成“亮线”或“亮点”，尽管这种“亮线”或“亮点”的面积较小，但也在某种程度上影响了显示产品的外观，甚至干扰用户观看显示画面，降低了用户对显示设备的使用体验。
下面，借助于图2来说明上述的“亮线”的示例，在图2所示的显示面板中，“亮线”处于显示面板的右下方的非显示区，如图2中的B1所指示的区域。通过进一步的研究，本申请人的发明人发现，亮线区域B1与非显示区中较大的、不存在信号走线的区域(该区域在本文中可被称为空白区域)基本对应。图2还图示了显示面板的局部透视图，以示意性地说明触控电极以及与触控电极连接的信号走线，如图2中的左侧图所示，触控电极包括并行排列的多个第一触控电极Rx和并行排列的多个第二触控电极Tx，所述多个第一触控电极Rx和所述多个第二触控电极Tx相互交叉，相应地，所述多条信号走线包括分别与多个第一触控电极Rx连接的多条第一信号走线T11、T12和分别与所述多个第二触控电极Tx连接的多条第二信号走线T2。图2中所示的第一触控电极Rx和第二触控电极Tx均包括菱形触控电极块，多个菱形触控电极块经由连接线Bridge桥接可形成一条第一触控电极或一条第二触控电极。当然，触控电极的具体实施方式并不限于图2的示例，例如，每个第一触控电极Rx和每个第二触控电极Tx也可被实施为长条形状，本申请对触控电极的具体形式不作任何限制。在图2的示例中，亮线区域B1处于第一信号走线T12和第二信号走线T2之间，也就是说，第一信号走线T12和第二信号走线T2之间存在较大的空白区域。显示设备通常包括对光线具有反射作用的反射性材料，这种相对较大的空白区域可能让由反射性材料反射的光线大量地向外出射，因此，当人眼从某些角度观看显示面板时，会感知到上述的亮点或亮线。
本文提到的“第一触控电极”和“第二触控电极”可以分别指的是接收电极和发射电极，接收电极和发射电极相互绝缘并可以产生互电容，在显示面板运行过程中，触摸控制器可以向发射电极传送控制信号，并从接收电极接收感测信号，由此，可基于互电容的变化而确 定用户的触摸位置。当然，触控电极也可以基于自电容感测原理的结构，触控电极的具体排列和结构不是本发明的重点和关键，在此不再详述。
通过进一步的研究，本申请人的发明人发现，上述的“亮线”或“亮点”现象的严重程度并不仅仅归因于光的反射，比较明显的“亮线”或“亮点”还与显示面板的内部结构有关。图3示出了根据本公开的另一实施例的显示面板的非显示区的局部截面图。如图3所示，显示面板的非显示区包括光反射凹凸区域，该光发射凹凸区域包括位于衬底基板上的反射材料层RF，反射材料层RF具有背离衬底基板的凹凸表面。图3中还示出了第一信号走线T1、第二信号走线T2以及其他信号线(例如，数据信号线DL)，衬底基板在图3中未被示出，其位于数据信号线DL的下方，对数据信号线DL、反射材料层RF等各种结构进行支撑。数据信号线DL、反射材料层RF以及第一信号走线T1和第二信号走线T2之间由绝缘层INS隔离。
如图3所示，由于制作工艺等诸多因素的缘故，衬底基板上的信号线(例如，数据信号线DL)并不能平整地排列在衬底基板上，在平行于衬底基板的底表面的方向上，不同的信号线之间彼此存在错位，或者说，在垂直于衬底基板的底表面的竖直方向上，不同的信号线之间存在高度差。相应地，这些信号线上方的其他的层也不能实现为具有平坦表面，而是具有凹凸表面。本申请的发明人认识到，图3中所示的覆盖数据信号线DL的反射材料层RF具有背离衬底基板的凹凸表面，这进一步促成了或者加重了上述的亮线或亮点的发生。如图3所示，显示面板的非显示区域包括第一信号走线T1和第二信号走线T2之间的空白区域，从不同角度入射到空白区域的自然光将对人眼产生不同的作用。例如，对于如图3中浅色箭头所示的自然光Light 1，其入射到第一信号走线T1下方，并且在第一信号走线T1和反射材料层RF之间反射，由于第一信号走线T1的存在而不会或者较少地由人眼感知到。而对于深色箭头所示的自然光Light 2，其入射到第一信号走线T1和第二信号走线T2之间的空白区域，自然光Light 2将由反射材料层RF的凹凸不平的上表面反射出显示面板，从而被人眼所感知，而且，反射材料层RF的凹凸不平的上表面可能导致明显的光干涉效应，从而让人眼观测到更加明显的亮点或亮线。
因此，根据本公开的另外的实施例提供的显示面板包括：衬底基板，所述衬底基板包括显示区和处于所述显示区之外的非显示区；位于所述衬底基板上的触控电极，所述触控电极处于所述显示区内；以及与所述触控电极电连接的多条信号走线，所述多条信号走线分布在所述非显示区内，所述非显示区包括光反射凹凸区域，所述光发射凹凸区域包括位于所述衬底基板上的反射材料层，所述反射材料层具有背离所述衬底基板的凹凸表面，所述显示面板还包括处于所述非显示区内的光削减结构，所述光削减结构位于所述反射材料层的上方且至少被配置成减少来自所述反射材料层的凹凸表面的反射光，所述光削减结构与所述多条信号走线和所述触控电极彼此分离。
根据本公开的一些实施例，光削减结构的至少一部分在所述衬底基板上的正投影与所述反射材料层在所述衬底基板上的正投影至少部分重叠。由此，可以大幅度地缓解或避免上述的“亮线”或“亮点”现象，为用户带来更佳的人机交互体验。
根据本公开的一些实施例，触控电极包括并行排列的多个第一触控电极和并行排列的多个第二触控电极，所述多个第一触控电极和所述多个第二触控电极相互交叉，其中所述多条信号走线包括分别与所述多个第一触控电极连接的多条第一信号走线和分别与所述多个第二触控电极连接的多条第二信号走线，所述光削减结构包括至少一条第一虚设走线，所述第一虚设走线处于所述多条第一信号走线和所述多条第二信号走线之间。第一虚设走线至少能够遮挡一部分从空白区域射出的反射光线，从而减轻或避免上述的“亮线”或“亮点”现象，改善显示设备的外观和用户对显示设备的使用体验。另外，如前所述，第一虚设走线也使得在制作信号走线过程中金属膜层的蚀刻均一性得以提升，从而提高显示设备的触控均一性。
下面，参照图4和图5进一步清楚地说明上述的第一虚设走线的示例。图4图示了根据本公开的另一实施例提供的显示面板的局部透视图，以示意性地说明触控电极外围的信号走线和第一虚设走线。为了方便比较和理解，图4所示的第一信号走线和第二信号走线的布局与图2类似。如图4所示，第一虚设走线DT1(如图4中的深色线段所示)被布置于第二信号走线T2和第一信号走线T11、T12之间。第一虚设走线DT1所在区域可对应于图2中所示的B1区域。图5图示 了图4中的第一虚设走线DT1所在区域沿着线A1-A2获得的局部截面图。在图4的示例中，非显示区中的反射材料层包括直流电压母线VDD，直流电压母线VDD被配置成为显示面板的显示区内的像素电路传输直流电压。直流电压母线VDD相对于其他信号线所占据的面积较大，这适合于向显示区内的像素电路集中提供驱动电流，并有利于避免由于驱动电流较大而被损伤。结合图4和图5可以看出，第一虚设走线DT1被布置在直流电压母线VDD的上方，且所至少一部分第一虚设走线DT1在衬底基板上的正投影与直流电压母线VDD在衬底基板上的正投影至少部分重叠。如图5所示，由于第一虚设走线DT1的存在，入射到非显示区的自然光只有少部分Light 3被反射出，而且不会发生如图3所示那样的强的干涉效应，因此，人眼感知到的从直流电压母线VDD反射出的反射光的量被极大地削弱，由此可以减轻甚至避免上述的亮线或亮点的发生。能够理解到的是，直流电压母线VDD仅仅是反射材料层的一个示例，反射材料层还可以是其它的具有反射特性的层。此外，在图4所示的实施例中，所述多条所述第一虚设走线DT1中的各第一虚设走线DT1平行于显示区的最靠近第一信号走线和第二信号走线的边缘延伸。
如图5所示，在一些实施例中，显示面板包括多条数据信号线DL，数据信号线DL被配置成向显示区内的像素电路传输数据信号，数据信号线DL延伸至非显示区、且处于衬底基板和直流电压母线VDD之间，所述多条数据信号线中的至少一部分数据信号线在平行于所述衬底基板的底表面的方向上彼此错位排列，使得直流电压母线VDD具有背离衬底基板的凹凸表面。进一步地，至少一部分第二信号走线T2在衬底基板上的正投影与直流电压母线VDD在衬底基板上的正投影存在部分重叠。
应当理解的是，图5和图3所示的截面图主要用于说明直流电压母线VDD、数据线DL、第一虚设走线DT1、第一信号走线和第二信号走线等结构，而省略了显示面板中与这里讨论的要解决的问题不太相关的结构，因此，图5和图3并不意味着显示面板的全部结构。
根据本公开的另外的实施例，光削减结构包括至少一条第二虚设走线，所述第二虚设走线处于所述触控电极和所述多条信号走线中最靠近所述触控电极的信号走线之间。为了方便说明本实施例，图6示 意性地示出了图2所示的虚线椭圆区域的放大图。光削减结构包括至少一条第二虚设走线DT3，第二虚设走线DT3处于触控电极和所述多条信号走线中最靠近所述触控电极的信号走线之间。第二虚设走线DT3至少可以实现与上述的第一虚设走线DT1类似的效果。
如前所述，显示面板包括触摸控制器，第一触控电极和第二触控电极分别经由第一信号走线和第二信号走线连接至触摸控制器，以实现对显示面板的触摸控制。返回参照图2，根据本公开的一些实施例，每条第一信号走线包括第一分段T11和第二分段T12，第一分段T11和第二分段T12分别与多个第一触控电极中相应的第一触控电极Rx的第一端和第二端连接，第一端相对于第二端更远离触摸控制器，第一触控电极经由第一分段T11和第二分段T12电连接至触摸控制器，每个第二触控电极Tx经由多条第二信号走线中相应的第二信号走线T2电连接至触摸控制器。在图2的示例中，第一触控电极和第二触控电极均包括多个触控电极块，全部的触控电极块可形成触控电极块阵列。每行触控电极块中的各个触控电极块依次连接形成一个第二触控电极Tx，每列触控电极中的各个触控电极块依次连接形成一个第一触控电极Rx。图2中没有示出触摸控制器，触摸控制器可以与触控电极处于衬底基板的同一侧，并位于图2中示出的第一信号走线和第二信号走线的下方。替代性地，触摸控制器和触控电极也可以布置成彼此相对，例如，衬底基板可以是柔性衬底基板，柔性衬底基板的非显示区可以弯曲而形成与触控电极相对的弯曲部分，在该情形中，触摸控制器可以布置在该弯曲部分上从而与触控电极相对，即，将触摸控制器隐藏在显示面板的背面，由此也有利于实现显示设备的边框的窄化。
根据本公开的一些实施例，如图2所示，多条第二信号走线中的至少一部分第二信号走线T2在非显示区内弯折地延伸，使得电连接至触摸控制器的各条第二信号走线T2具有一致的长度，所述至少一条第一虚设走线处于第一信号走线的第二分段T12和所述至少一部分第二信号走线T2之间。更具体地，如图2所示，与各行第二触控电极连接的第二信号走线T2延伸至非显示区，与靠近非显示区的第二触控电极Tx连接的一些第二信号走线T2(这些第二信号走线T2到触摸控制器的距离也相对较近)大幅度地弯折，与相对远离非显示区的第二触控电极Tx连接的一些第二信号走线T2(这些第二信号走线T2到触摸控 制器的距离也相对较远)弯折幅度较小、甚至不弯折，这样，可以使得电连接至触摸控制器的各条第二信号走线T2具有一致的长度，避免不同第二信号线T2之间的电阻值的过大差异，有利于触控性能的提升。能够理解到的是，本文提到的“一致的长度”的含义是各条第二信号走线的长度基本相同，或者各条第二信号走线的长度方面的差异被控制在较小非范围内(例如，长度差异不超过10％)。图2中示意性地图示了弯曲延伸而靠近第一信号走线的第二分段T12的一部分第二信号走线T2所在的区域R，该区域R对于第二信号走线而言也可称为电阻补偿区域。为了避免第一信号走线和第二信号走线之间的干扰，往往在第一信号走线和第二信号走线之间形成较大的空白区域，因此，根据本公开的一些实施例，如图4所示，第一信号走线的第二分段和所述至少一部分第二信号走线之间包括至少一条第一虚设走线。应当理解到的是，图2所示的第一信号走线和第二信号走线的分布样式并不构成对显示面板中的第一信号走线和第二信号走线的分布的限制，第一信号走线和第二信号走线可以被布置成本领域技术人员确定的任何其他排布方式，只要能够将各个触控电极与触摸控制器电连接即可。
进一步地，本申请的发明人在实践中发现，对于多条虚设走线而言，多条虚设走线的不同排布对上述的亮线或亮点现象的改善有一定的影响。根据本公开的一些实施例，多条第一虚设走线彼此间隔且均匀地分布在所述第一信号走线和第二信号走线之间，每条第一虚设走线的宽度与所述多条所述第一虚设走线中各第一虚设走线之间的间距之间的比值大于等于1。这里提到的第一虚设走线的宽度指的是第一虚设走线在平行于衬底基板的底表面的平面内垂直于第一虚设走线的延伸方向的方向上的尺寸。而且，如果第一虚设走线在平行于衬底基板的底表面的平面内存在弯折，那么该“宽度”的方向也随着弯折而发生变化。根据本公开的一些实施例，第一虚设走线的宽度大致为3至50微米，各第一虚设走线之间的间距大致为4至30微米。图7示意性地示出了若干条第一虚设走线DT1，每条第一虚设走线的宽度被表示为w，第一虚设走线之间的间距被表示为d。通过大量的实验研究发现，当上述的宽度w和上述的间距d之间的比值大于等于1时，人眼感知到的亮线或亮点相比于宽度w和间距d之间的比值小于1的情形更弱，当第一虚设走线的宽度与各第一虚设走线之间的间距之间的比值大于 等于2时，上述的亮线或亮点现象得以大幅度缓解甚至能够消除。
根据本公开的一些实施例，第一信号走线、第二信号走线、第一虚设走线具有大致相等的宽度，例如，每条第一信号走线和每条第二信号走线的宽度均在3至50微米之间。进一步地，所述多条第一信号走线彼此间隔、且均匀地分布在非显示区内，所述多条第二信号走线彼此间隔、且均匀地分布在非显示区内，以有利于显示面板的触控均一性。每条第一信号走线的宽度与所述多条第一信号走线中各第一信号走线之间的间距之间的比值大于等于1，每条第二信号走线的宽度与所述多条第二信号走线中各第二信号走线之间的间距之间的比值大于等于1。在另外的实施例中，每条第一信号走线的宽度与所述多条第一信号走线中各第一信号走线之间的间距之间的比值大于等于2，每条第二信号走线的宽度与所述多条第二信号走线中各第二信号走线之间的间距之间的比值大于等于2。通过对第一信号走线、第二信号走线的宽度、第一信号走线之间的间距、以及第二信号走线之间的间距进行这样的设计，可以防止或减轻第一信号走线和第二信号走线所在区域可能发生的类似的亮线或亮点现象，提升用户对显示设备的使用体验。
根据本公开的一些实施例，第一信号走线、第二信号走线、虚设走线(包括第一虚设走线)中的每个可以包括两条以上的金属线，这些金属线可彼此电连接、但分布在不同的层中，以有利于走线的整体电阻的降低。在一个示例中，所述第一虚设走线、所述第一信号走线、以及所述第二信号走线中的至少一个包括第一金属线、第二金属线、以及处于第一金属线和第二金属线之间的绝缘层，所述绝缘层包括过孔，所述第一金属线经由所述绝缘层中的过孔电连接至所述第二金属线。在一些实施例中，用于制作第一金属线和第二金属线的材料包括钛(Ti)、铝(Al)、钼(Mo)、以及上述金属元素的合金材料中的至少一种。在一个示例中，第一金属线和第二金属线中的至少一个包括铝层以及位于所述铝层两侧的钛层。由此，第一金属线可包括Ti/Al/Ti三层金属结构，同样地，第二金属线也可包括Ti/Al/Ti三层金属结构。
图8图示了根据本公开的一些实施例的显示面板的局部非显示区域的光镜(光学显微镜)图，即，采用光学显微镜拍摄的图片。该光镜图可基本上对应于图4所示的局部非显示区。图8中示出了第一虚 设走线DT1、第一信号走线T12、第二信号走线T2、以及油墨区OA，油墨区OA覆盖了一部分信号走线。
接下来，借助于图9说明显示面板的非显示区所包括的主要的层结构，图9示意性地示出了显示面板沿着图8中的线A1-A2获得的局部截面图。如图9所示，显示面板包括衬底基板BS、数据信号DL、第一绝缘层INS1、直流电压母线VDD、第二绝缘层INS2、第一无机封装材料层INO1、有机封装材料层OL、第二无机封装材料层INO2、缓冲层BUF、第三绝缘层INS3、第一虚设走线DT1以及第一信号走线T12和第二信号走线T2。在一些实施例中，第一信号走线T12和第二信号走线T2包括第一金属线、第二金属线、以及处于第一金属线和第二金属线之间的绝缘层，第一金属线经由绝缘层中的过孔电连接至第二金属线。第一虚设走线DT1为单层的金属线。在显示面板的非显示区，显示面板还包括封装层，封装层处于直流电压母线VDD和所述多条信号走线T2、T12之间，封装层至少包括第一无机封装材料层INO1、第二无机封装材料层INO2、以及位于第一无机封装材料层INO1和第二无机封装材料层INO2之间的有机材料封装层OL。封装层能够为显示面板的显示区内的各层提供封装保护，特别地，有机材料封装层可起到应力释放的作用，有机材料封装层可由第一无机封装材料层INO1和第二无机封装材料层INO2完全覆盖，从而有效地防止外部水汽和氧进入到显示面板内部，有效地提升了显示面板的可靠性和信赖性。
根据本公开的另外的实施例，显示面板还包括位于衬底基板上的封装坝，封装坝围绕所述显示区在所述非显示区内延伸，所述光削减结构处于所述封装坝和所述显示区之间。对对于图8所示的实施例，封装坝可处于油墨区OA内并由油墨材料覆盖，封装坝的数量可以为一个或者两个以上。各个封装坝可以具有相同或者不同的膜层结构。在一个示例中，封装坝可包括依次层叠设置的保护部和阻隔部。在另一示例中，封装坝还可包括位于阻隔部上方的支撑部。保护部、阻隔部和支撑部中的至少一个可以与显示面板显示区中的一个膜层处于同层。例如，在OLED显示面板中，封装坝的阻隔部可以与像素界定层处于同一层。
如前所述，在一些实施例中，衬底基板上的信号线(例如，数据信号线DL)并不能平整地排列在衬底基板上，在垂直于衬底基板的底 表面的竖直方向上，不同的信号线之间存在高度差。图10示意性地示出了衬底基板BS上的多条数据信号线DL，为了简便起见，没有绘制出数据信号线DL之间的绝缘层以及数据信号线DL上的其它层。根据本公开的一些实施例，数据信号线DL采用与显示面板的薄膜晶体的栅极相同的材料形成。各数据信号线DL具有大致相等的宽度w1，相邻的数据信号线DL之间的间距S小于单个的数据信号线DL的宽度w1，相邻数据信号线DL之间的高度差d小于相邻的数据信号线DL之间的间距S，这里的高度差指的是数据信号线到衬底基板的上表面的竖直距离之间的差。在一些实施例中，上述的高度差d为4000埃左右，上述的间距S小于1微米，例如为0.7微米，上述的宽度w1为上述间距S的2倍，例如为2微米。如图10所示，各数据信号线DL具有相同的截面，如图10所示，数据信号线DL的坡度角α小于60度，例如为55度。
在一些实施例中，上述的直流电压母线VDD也可具有坡度角，而不是如图3所示的那样。例如，直流电压母线背离衬底基板的所述凹凸表面的凸面与所述衬底基板之间可具有坡度角，该坡度角可在30-60度之间。同样可以参照图10中的坡度角α来理解直流电压母线背离衬底基板的凹凸表面的凸面与衬底基板之间的坡度角含义，在此不再赘述。
上述实施例中提到的显示面板可以是各种类型的显示面板，包括但不限于例如有机发光二极管(OLED)显示面板、液晶显示(LCD)面板等。在OLED显示面板的情形中，上述的触控电极可以制作在发光层的上方。也就是说，显示面板此时还包括处于触控电极和衬底基板之间的像素结构层，所述像素结构层包括阳极、阴极以及二者之间的有机发光层。
本公开的另一实施例提供了一种显示装置，该显示装置包括上述各实施例中任一实施例所述的显示面板。本文并不对显示装置的类型或用途进行任何的限定，该显示装置可以是任何具有显示功能的电子设备或部件，显示装置的示例包括但不限于移动电子设备、导航仪、手表、打印机、计算机、掌上电脑、电视机等等。
以上具体描述了本公开的一些示例性实施例，但是本领域技术人员在实践所要求保护的技术方案时根据对附图、公开内容已经权利要 求的研究，能够理解和实现所公开实施例的其他变型。在权利要求中，词语“包括”不排除其它元件的存在。虽然一些特征被记载在不同的从属权利要求中，但是本申请也意图涵盖将这些特征组合在一起的实施例。

Claims (20)

  1. 一种显示面板，包括：
    衬底基板，所述衬底基板包括显示区和处于所述显示区之外的非显示区；
    位于所述衬底基板上的触控电极，所述触控电极处于所述显示区内；以及
    与所述触控电极电连接的多条信号走线，所述多条信号走线分布在所述非显示区内，
    其中所述非显示区包括光反射凹凸区域，所述光发射凹凸区域包括位于所述衬底基板上的反射材料层，所述反射材料层具有背离所述衬底基板的凹凸表面，
    其中所述显示面板还包括处于所述非显示区内的光削减结构，所述光削减结构位于所述反射材群料层的上方且至少被配置成减少来自所述反射材料层的凹凸表面的反射光，其中所述光削减结构与所述多条信号走线和所述触控电极彼此分离。
  2. 根据权利要求1所述的显示面板，其中所述光削减结构的至少一部分在所述衬底基板上的正投影与所述反射材料层在所述衬底基板上的正投影至少部分重叠。
  3. 根据权利要求1所述的显示面板，其中所述触控电极包括并行排列的多个第一触控电极和并行排列的多个第二触控电极，所述多个第一触控电极和所述多个第二触控电极相互交叉，其中所述多条信号走线包括分别与所述多个第一触控电极连接的多条第一信号走线和分别与所述多个第二触控电极连接的多条第二信号走线，
    其中所述光削减结构包括至少一条第一虚设走线，所述第一虚设走线处于所述多条第一信号走线和所述多条第二信号走线之间。
  4. 根据权利要求1所述的显示面板，其中所述光削减结构包括至少一条第二虚设走线，所述第二虚设走线处于所述触控电极和所述多条信号走线中最靠近所述触控电极的信号走线之间。
  5. 根据权利要求3所述的显示面板，其中所述显示面板还包括处于所述显示区内的像素电路，其中所述反射材料层包括直流电压母线，所述直流电压母线被配置成为所述像素电路传输直流电压。
  6. 根据权利要求5所述的显示面板，其中所述显示面板还包括被配置成向所述像素电路传输数据信号的多条数据信号线，所述多条数据信号线延伸至所述非显示区、且处于所述衬底基板和所述直流电压母线之间，其中所述多条数据信号线中的至少一部分数据信号线在平行于所述衬底基板的底表面的方向上彼此错位，使得所述直流电压母线具有背离所述衬底基板的凹凸表面。
  7. 根据权利要求6所述的显示面板，其中所述多条第二信号走线中的至少一部分在所述衬底基板上的正投影与所述直流电压母线在所述衬底基板上的正投影部分重叠。
  8. 根据权利要求6所述的显示面板，其中，所述直流电压母线背离所述衬底基板的所述凹凸表面的凸面与所述衬底基板之间的坡度角在30-60度之间。
  9. 根据权利要求3所述的显示面板，其中所述显示面板还包括触摸控制器，所述多条第一信号走线中的每条第一信号走线包括第一分段和第二分段，所述第一分段和所述第二分段分别与所述多个第一触控电极中相应的第一触控电极的第一端和第二端连接，所述第一端相对于所述第二端更远离所述触摸控制器，所述第一触控电极经由所述第一分段和所述第二分段电连接至所述触摸控制器，所述多个第二触控电极中的每个第二触控电极经由所述多条第二信号走线中相应的第二信号走线电连接至所述触摸控制器，
    其中所述多条第二信号走线中的至少一部分第二信号走线在所述非显示区内弯折地延伸，使得电连接至所述触摸控制器的各条第二信号走线具有一致的长度，
    其中所述至少一条第一虚设走线处于所述第一信号走线的第二分段和所述至少一部分第二信号走线之间。
  10. 根据权利要求3所述的显示面板，其中多条所述第一虚设走线彼此间隔且均匀地分布在所述第一信号走线和所述第二信号走线之间，其中每条第一虚设走线的宽度与所述多条所述第一虚设走线中各第一虚设走线之间的间距之间的比值大于等于1。
  11. 根据权利要求10所述的显示面板，其中每条第一虚设走线的宽度与所述多条所述第一虚设走线中各第一虚设走线之间的间距之间的比值大于等于2。
  12. 根据权利要求10所述的显示面板，其中所述多条所述第一虚设走线中的各第一虚设走线平行于所述显示区的最靠近所述第一信号走线和所述第二信号走线的边缘延伸。
  13. 根据权利要求3所述的显示面板，其中所述多条第一信号走线彼此间隔、且均匀地分布在所述非显示区内，所述多条第二信号走线彼此间隔、且均匀地分布在所述非显示区内，
    其中每条第一信号走线的宽度与所述多条第一信号走线中各第一信号走线之间的间距之间的比值大于等于1，每条第二信号走线的宽度与所述多条第二信号走线中各第二信号走线之间的间距之间的比值大于等于1。
  14. 根据权利要求10-13中任一项所述的显示面板，其中每条第一信号走线、每条第二信号走线、每条第一虚设走线的宽度在3至50微米之间，各第一信号走线之间的间距、各第二信号走线之间的间距、以及各第一虚设走线之间的间距在4至30微米之间。
  15. 根据权利要求3所述的显示面板，其中所述第一虚设走线、所述第一信号走线、以及所述第二信号走线中的至少一个包括第一金属线、第二金属线、以及处于第一金属线和第二金属线之间的绝缘层，所述绝缘层包括过孔，所述第一金属线经由所述绝缘层中的过孔电连接至所述第二金属线。
  16. 根据权利要求1所述的显示面板，其中所述多条信号走线和所述光削减结构的材料包括钼、铝、钛、钼合金材料、铝合金材料、钛合金材料中的至少一种。
  17. 根据权利要求5所述的显示面板，其中所述显示面板包括位于所述非显示区的封装层，所述封装层于所述直流电压母线和所述多条信号走线之间，其中所述封装层至少包括第一无机封装材料层、第二无机封装材料层、以及位于所述第一无机封装材料层和第二无机封装材料层之间的有机材料封装层。
  18. 根据权利要求1所述的显示面板，其中所述显示面板还包括位于所述衬底基板上的封装坝，所述封装坝围绕所述显示区在所述非显示区内延伸，其中所述光削减结构处于所述封装坝和所述显示区之间。
  19. 根据权利要求1-13、15-18中任一项所述的显示面板，所述显示面板包括位于所述显示区内的像素结构层，所述像素结构层处于所 述触控电极和衬底基板之间，所述像素结构层包括阳极、阴极以及处于所述阳极和阴极之间的有机发光层。
  20. 一种显示装置，包括如权利要求1-19中任一项所述的显示面板。
PCT/CN2021/094371 2020-12-25 2021-05-18 显示面板和显示装置 WO2022134435A1 (zh)

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