CN110767681B - Display screen and display terminal - Google Patents
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- CN110767681B CN110767681B CN201811290608.7A CN201811290608A CN110767681B CN 110767681 B CN110767681 B CN 110767681B CN 201811290608 A CN201811290608 A CN 201811290608A CN 110767681 B CN110767681 B CN 110767681B
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- 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
- H10K59/129—Chiplets
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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
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- 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
- H10K59/17—Passive-matrix OLED displays
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- 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
- H10K59/18—Tiled displays
Abstract
The invention relates to a display screen and a display terminal. A display screen has a first display area and a second display area connected to each other; the signal lines in the first display area are partitioned by the second display area, and of the signal lines partitioned by the second display area, the first signal lines are positioned on one side of the second display area, and the second signal lines are positioned on the other side of the second display area; a plurality of signal connecting lines are arranged in the second display area; the signal connecting line is communicated with the first signal line and the second signal line. Among the above-mentioned display screen, can realize full screen display and show, and be provided with the signal connection line in the second display area and connect the signal line that lies in the relative both sides of second display area in the first display area to guarantee that the signal line that lies in the relative both sides of second display area in the first display area can communicate, prevent to show unusually.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display screen and a display terminal.
Background
With the rapid development of electronic devices, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the electronic devices is concerned more and more in the industry. Traditional electronic equipment such as cell-phone, panel computer etc. owing to need integrate such as leading camera, earphone and infrared sensing element etc. so the accessible is slotted (Notch) on the display screen, sets up camera, earphone and infrared sensing element etc. in the fluting region, but the fluting region is not used for the display screen, like the bang screen among the prior art, or adopts the mode of trompil on the screen, to the electronic equipment who realizes the function of making a video recording, external light accessible screen on trompil department get into the photosensitive element who is located the screen below. However, these electronic devices are not all full-screen in the true sense, and cannot display in each area of the whole screen, for example, the camera area cannot display the picture.
Disclosure of Invention
Therefore, it is necessary to provide a display screen and a display terminal for solving the problem that the conventional display screen cannot actually increase the screen occupation ratio and realize real full-screen display.
A display screen has a first display area and a second display area which are connected with each other; the second display area is at least partially surrounded by the first display area completely; the first display area and the second display area are used for displaying dynamic or static pictures; the signal lines in the first display area are partitioned by the second display area, and of the signal lines partitioned by the second display area, a first signal line is positioned on one side of the second display area, and a second signal line is positioned on the other side of the second display area; a plurality of signal connecting lines are arranged in the second display area; the signal connecting line penetrates through two sides of the second display area and is communicated with the first signal line and the second signal line.
The display screen is provided with the first display area and the second display area which are used for displaying dynamic or static pictures, and can really realize full-screen display. And be provided with the signal connection line in the second display area, the signal line (such as data line or scanning line) that is cut off in connecting first display area to the signal line that lies in the relative both sides of second display area in the assurance first display area can communicate, prevents to show unusually.
In one embodiment, the second display area comprises a first sub display area and a second sub display area which are adjacent; a photosensitive device can be arranged below the second sub-display area; the signal connecting lines are arranged in the first sub-display area. The signal connecting line is arranged in the first sub-display area, so that the area where the photosensitive devices such as the camera are located can be avoided, and the influence on the work of the photosensitive devices such as the camera is avoided.
In one embodiment, the display screen comprises a first display panel and a second display panel; the first display panel is arranged in the first display area; the second display panel is arranged in the second display area; the second display panel is a PMOLED display panel; the second display panel includes: a substrate; a first electrode layer formed on the substrate; and a pixel defining layer formed on the first electrode layer; the signal connecting line is arranged below the pixel defining layer and positioned between the first electrode layer and the substrate, and a signal shielding layer is arranged between the signal connecting line and the first electrode layer; or the signal connecting line is arranged below the pixel definition layer and above the first electrode layer, and a signal shielding layer is arranged between the signal connecting line and the first electrode layer. Interference of the signal connection lines with the light emitting region can be avoided by disposing the signal connection lines below the pixel defining layer. In addition, the signal shielding layer is formed between the signal connecting wire and the first electrode layer, so that the signal connecting wire can not generate signal interference on the first electrode layer.
In one embodiment, the first electrode layer comprises a plurality of waved first electrodes; the first electrodes extend in parallel along the same direction, and a space is reserved between every two adjacent first electrodes; in the extending direction of the first electrode, the width of the first electrode is continuously or discontinuously changed, and the distance is continuously or discontinuously changed; and/or a plurality of pixel openings are formed on the pixel defining layer, and the shape of each pixel opening is circular, oval, dumbbell-shaped or gourd-shaped. By arranging the first electrode in a wave shape and/or arranging the pixel opening of the pixel defining layer in a circular or elliptical shape, a dumbbell shape or a gourd shape, the diffraction effect can be effectively reduced.
In one embodiment, the display screen comprises a first display panel and a second display panel; the first display panel is arranged in the first display area; the second display panel is arranged in the second display area; the second display panel is an AMOLED display panel or an AMOLED-like display panel; the pixel circuit of the AMOLED-like display panel only comprises one switch element; the second display panel includes: a substrate; a pixel circuit; a first electrode layer formed on the pixel circuit; and a pixel defining layer formed on the first electrode layer; the signal connecting line is arranged below the pixel defining layer and is positioned below the pixel circuit, or the signal connecting line is arranged below the pixel defining layer and is formed in the same process step with a conductive layer in the pixel circuit, or the signal connecting line is arranged below the pixel defining layer and is positioned between the pixel circuit and the first electrode layer; and a signal shielding layer is formed between the signal connecting wire and the first electrode layer. Interference of the signal connection lines with the light emitting region can be avoided by disposing the signal connection lines below the pixel defining layer. In addition, the signal shielding layer is formed between the signal connecting wire and the first electrode layer, so that the signal connecting wire can not generate signal interference on the first electrode layer.
In one embodiment, the first electrode layer comprises a plurality of mutually independent first electrodes; each first electrode corresponds to one light-emitting structure; the first electrode is round, oval, dumbbell-shaped or gourd-shaped; and/or a plurality of pixel openings are formed on the pixel definition layer; the shape of the pixel opening is circular, oval, dumbbell shape or calabash shape. By arranging the pixel openings of the first electrode and/or the pixel defining layer to be circular or elliptical, dumbbell-shaped or gourd-shaped, the diffraction effect can be effectively reduced.
In one embodiment, the pixel defining layer of the first sub-display region is made of an opaque material, and the signal connection line is made of a metal or transparent metal oxide material; or the pixel definition layer of the second display area is made of a light-transmitting material, and the signal connecting line is made of a transparent metal oxide material. The pixel definition layer of the first sub-display area is set to be light-tight, so that certain panel light transmittance is sacrificed to ensure that the signal connecting line passing through the first sub-display area is invisible, and the visual effect of the display screen is improved. The pixel definition layer of the second display area is made of a light-transmitting material, so that the display screen can be ensured to have better light transmittance, and the normal work of photosensitive devices such as a camera arranged below the display screen is ensured.
In one embodiment, the signal connecting lines are distributed on different conductive material layers and are connected through metal contact holes; and/or the signal connecting lines are arranged in parallel in the first sub-display area. The signal connecting lines are arranged on different conductive material layers in a cross-layer mode through the contact holes, and the signal connecting lines can be ensured to be kept away from other wiring in the second display panel. Through setting up many signal connection lines parallel to each other, can ensure that signal connection line avoids the luminous region in the second display panel, does not produce the interference to luminous region.
In one embodiment, the signal connection line is a wave-shaped trace; in the extending direction of the signal connecting line, the width of the signal connecting line changes continuously or discontinuously. The signal connecting line is arranged to be a wavy line, so that the diffraction effect can be effectively weakened.
In one embodiment, the signal shielding layer includes an insulating layer formed between the signal connection line and the first electrode layer. The insulating layer may prevent signal crosstalk between the signal connection line and the first electrode.
In one embodiment, the signal shielding layer further includes: an isolation structure formed on the insulating layer; and a planarization layer formed on and covering the isolation structure; the isolation structure is made of a conductive material so as to realize electromagnetic isolation between the signal connecting line and the first electrode layer in a power-on state. The electromagnetic isolation between the signal connecting line and the first electrode layer can be realized by arranging the isolation structure, so that the signal crosstalk between the signal connecting line and the first electrode layer is further avoided.
In one embodiment, the isolation structure comprises a plurality of shielding patterns; the projection of the shielding pattern on the substrate can at least cover the overlapping area between the projection of the signal connecting line on the substrate and the projection of the first electrode on the substrate, so that a good electromagnetic isolation effect is ensured.
In one embodiment, the material of the isolation structure is graphene or nano material, so as to further ensure that the display screen can be used as a flexible screen. In one embodiment, the first display panel is an AMOLED display panel; the first signal line includes at least one of a first data line and a first scan line; the second signal line includes at least one of a second data line and a second scan line; the signal connecting line comprises at least one of a data connecting line and a scanning connecting line; the data connecting line is connected with the first data line and the second data line; the scanning line is connected with the first scanning line and the second scanning line to ensure normal display of the display screen.
In one embodiment, the light transmittance of the structural film layer material of the second display panel is greater than 90%, so that photosensitive devices such as a camera can be arranged below the region, and full-screen display is realized.
In one embodiment, the second display area is a rectangular display area, a circular display area or an elliptical display area, and can adapt to the shapes of different photosensitive devices.
A display terminal, comprising: an apparatus body having a device region; the display screen of any preceding embodiment, overlaid on the device body; the device area is located below the second display area, and a photosensitive device for collecting light through the screen body of the second display area is arranged in the device area.
According to the display terminal, by adopting the display screen in any one of the embodiments, full-screen display in the true sense can be realized, and normal work can be realized.
Drawings
FIG. 1 is a schematic diagram of a display screen in an embodiment;
FIG. 2 is a schematic sectional view of a second display panel according to an embodiment;
FIG. 3 is a cross-sectional view of a second display panel in one embodiment;
FIG. 4 is a bottom view of a pixel definition layer in a second display panel according to an embodiment;
FIG. 5 is a schematic diagram of a first electrode of the PMOLED display panel according to an embodiment;
FIG. 6 is a schematic diagram illustrating a pixel opening in a pixel definition layer according to an embodiment;
FIG. 7 is a schematic view of a second display panel in another embodiment;
FIG. 8 is a circuit schematic of a pixel circuit in one embodiment;
FIG. 9 is a diagram illustrating an exemplary configuration of a display terminal;
fig. 10 is a schematic structural diagram of an apparatus body in an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. In addition, when an element is referred to as being "formed on" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
As described in the background art, since the conventional electronic devices such as the mobile phone and the tablet pc need to integrate the front camera, the receiver, the infrared sensing element, etc., the camera, the receiver, the infrared sensing element, etc. can be disposed in the slot region by slotting (Notch) on the display screen. However, the slotted region is not used for displaying pictures, such as a bang screen in the prior art, or a hole is formed in the screen, and for an electronic device implementing a camera function, external light can enter the photosensitive element located below the screen through the hole in the screen. However, these electronic devices are not all full-screen in the true sense, and cannot display in each area of the whole screen, for example, the camera area cannot display the picture.
In view of the above problems, the technical staff have developed a display screen, which realizes the full-screen display of the electronic device by setting a transparent display panel in a slotted area. Since the slotted area is generally disposed in the middle area of the display screen, the signal lines on the left side of the slotted area cannot be connected with the signal lines on the right side of the slotted area. If the driving chip (IC) is located at the left side of the slotted region, the signal line corresponding to the right side of the slotted region is not connected with the driving IC, thereby causing display abnormality. Because the slotted area is provided with the transparent display panel, the drive ICs are arranged on two opposite sides of the slotted area, so that the signal lines on two sides can be correctly connected with the drive ICs, and the display screen can normally display. The two sides are respectively provided with the driving ICs, so that cost waste is caused, and the two driving ICs need to be synchronous, so that the controllability is poor. And because drive ICs are required to be placed on two sides, the frames on the two sides are large, and normal display of the full screen is not facilitated.
In order to solve the above technical problem, an embodiment of the present application provides a display screen, which can solve the above problem well. Fig. 1 is a schematic structural diagram of a display screen in an embodiment. Referring to fig. 1, the display screen has a first display area AA1 and a second display area AA2. The second display area AA2 is at least partially surrounded by the first display area AA 1. The shape of the second display area AA2 may be a circle, an ellipse, a rectangle, or other irregular figure. In one embodiment, the second display area AA2 may be disposed at a top middle area of the display screen, and the second display area AA2 is rectangular, so that there is three-sided contact with the first display area AA1, as shown in fig. 1. The second display area AA2 may also be disposed in the left middle area or the right middle area of the first display area AA 1. In another embodiment, the second display area AA2 may also be disposed inside the first display area AA1 such that the second display area AA2 is completely surrounded by the first display area AA 1. In fig. 1, the number of the first display area AA1 and the second display area AA2 is one, and in other embodiments, the number of the first display area AA1 and the second display area AA2 may be two or more. The first display area AA1 and the second display area AA2 are both used for displaying a dynamic or static picture.
In this embodiment, the signal lines in the first display area AA1 are blocked by the second display area AA2. For example, the blocked signal line may be one of a data line and a scan line, and may be determined according to the relative position relationship of the display regions and the arrangement of a driving circuit and the like. Among the signal lines blocked by the second display area AA2, one side of the second display area AA2 is a first signal line 114a, and the other side of the second display area AA2 is a second signal line 114b. A plurality of signal connection lines 112 are disposed in the second display area AA2. The number of the signal connection lines 112 is the same as the number of the signal lines blocked by the second display area AA2. The signal connection line 112 passes through both sides of the second display area AA2 and connects the first signal line 114a and the second signal line 114b to prevent display abnormality.
The display screen is provided with the first display area AA1 and the second display area AA2 which are used for displaying dynamic or static pictures, and can really realize full-screen display. And be provided with signal connection line 112 in second display area AA2, be connected the signal line (such as data line or scanning line etc.) that is cut off in the first display area to guarantee that the signal line that lies in the relative both sides of second display area AA2 in first display area AA1 can communicate, prevent to show unusually. In addition, the first signal line 114a and the second signal line 114b located at two sides of the second display area AA2 are connected by the signal connection line 112, so that the driving circuit (e.g., the driving IC) 130 is disposed at one side to drive the signal lines in the first display area. Compared with the traditional method, the cost can be saved, larger frames do not need to be arranged on two sides, and full-screen display is facilitated.
In this embodiment, the driving circuit 130 is disposed on the left side of the second display area AA2, the corresponding first signal line 114a is a first data line, the corresponding second signal line 114b is a second data line, and the signal connection line 112 is a data connection line for connecting the first data line and the second data line on both sides of the second display area AA2. The number of the signal connection lines 112 is determined by the pixel rows/columns through which the second display area AA2 passes. In another embodiment, when the driving circuit 130 is disposed at the right side of the second display area AA2, the blocked signal lines are data lines. When the driving circuit 130 is disposed at an upper side or a lower side of the second display area AA2, the blocked signal lines are scan lines, and the corresponding signal connection lines 112 are scan connection lines. In other embodiments, the second display area AA2 is disposed inside the first display area AA1, and four sides of the second display panel 120 are connected to the first display panel 110. At this time, the first signal line 114a includes a first scan line and a second data line, and the second signal line 114b includes a first scan line and a second scan line. Similarly, the signal connection lines 112 also include scan connection lines and data connection lines. The scanning connecting line is used for connecting the first scanning line with the second scanning line, and the data connecting line is used for connecting the first data line with the second data line so as to ensure normal display of the display screen.
In one embodiment, the second display area AA2 includes a first sub-display area AA22 and a second sub-display area AA24, as shown in fig. 2. A photosensitive device may be disposed under the second sub-display area AA 24. In this embodiment, the number of the second sub-display areas AA24 is two, and the two sub-display areas are surrounded by the first sub-display area AA 22. In other embodiments, the number of the second sub-display area AA24 may be set to one. The number of the second sub-display areas AA24 may be determined according to the position setting of the light sensing devices in the display terminal. For example, when the front camera of the display terminal adopts two cameras, two second sub-display areas AA24 may be set, and each second sub-display area AA24 corresponds to one camera. In this embodiment, the signal connection line 112 is disposed in the first sub-display area AA22, so that the area where the photosensitive device such as a camera is located can be avoided, and the operation of the photosensitive device such as a camera is not affected.
In one embodiment, the display screen includes a first display panel 110 and a second display panel 120. The first display panel 110 is disposed in the first display area AA1; the second display panel 120 is disposed in the second display area AA2. The first display panel 110 and the second display panel 120 may be fabricated separately and then spliced, or fabricated at the same time to form an integrated screen. At this time, the first display panel 110 and the second display panel 120 share one substrate.
In one embodiment, the first display panel 110 is an AMOLED display panel, and the second display panel 120 is a PMOLED display panel. FIG. 3 is a cross-sectional view of a second display panel in an embodiment. In the present embodiment, only the structural layers are shown, and other layers are omitted or simplified. Referring to fig. 3, the second display panel 120 includes a substrate 210, a signal connection line 112, a signal shielding layer 230, a first electrode layer 240, and a pixel definition layer 250. The signal connection line 112 is disposed on the substrate 210. In one embodiment, the signal shielding layer 230 is disposed on the signal connection line 112 and covers the signal connection line 112. The first electrode layer 240 is formed on the signal shielding layer 230. The pixel defining layer 250 is formed on the first electrode layer 240. Specifically, the signal connection line 112 is disposed below the pixel defining layer 250, and avoids a region where a photosensitive device such as the camera head 930 is located. By disposing the signal connection line 112 under the pixel definition layer 250 and avoiding the area where the camera is located, the interference of the signal connection line 112 to the light-emitting area and the normal operation of the camera can be avoided. In addition, by forming the signal shielding layer 230 between the signal connection line 112 and the first electrode layer 240, it is ensured that the signal connection line 112 does not generate signal interference with the first electrode layer 240.
In one embodiment, the signal connection line 112 is located between the first electrode layer 240 and the substrate 210. That is, the signal connection line 112 is prepared before the first electrode layer 240. Also, the signal connection line 112 is disposed under the first electrode layer 240, so that an operational influence on the first electrode layer 240 may be reduced. At this time, the first electrode layer 240 is an anode layer. In another embodiment, the signal connection line 112 may also be disposed above the first electrode layer 240 and below the pixel definition layer. When the signal connection line 112 is disposed above the first electrode layer 240, the first electrode layer 240 is a cathode layer, so as to prevent the signal connection line 112 from interfering with its normal operation.
In one embodiment, the substrate 210 includes a glass substrate 212 and a flexible substrate 214 formed over the glass substrate 212. By adding the flexible substrate 214, the substrate 210 can have a certain bending performance.
In an embodiment, the material of the pixel defining layer of the first sub-display area AA22 may be an opaque material (such as a light blocking or absorbing material), for example, a black organic glue. Since the first sub-display area AA22 does not need to be provided with a camera, the requirement for light transmittance in this area is low. In this case, the signal connection line 112 is made of metal or transparent metal oxide. For example, when the signal connection line 112 employs a transparent metal oxide, indium Tin Oxide (ITO), indium Zinc Oxide (IZO), silver-doped indium tin oxide (Ag + ITO), silver-doped indium zinc oxide (Ag + IZO), or the like may be employed. The pixel definition layer 250 of the first sub-display area AA22 is set to be opaque, so that a certain transmittance of the panel is sacrificed to ensure that the signal connection line 112 passing through the first sub-display area AA22 is invisible, thereby improving the visual effect of the display screen.
In an embodiment, the pixel defining layer 250 of the second display area AA2 is made of a transparent material. In this case, the signal connection line 112 is made of a transparent metal oxide material. By setting the pixel defining layer 250 of the second display area AA2 as a light-transmitting material, it can be ensured that the display screen has better light transmittance, and the photosensitive devices such as the camera 930 arranged below can be ensured to work normally. When the signal connection line 112 is made of a transparent metal oxide, it is ensured that the second display panel 120 does not affect the transparency of the display panel when it is a transparent display panel.
In an embodiment, the signal connection lines 112 are disposed parallel to each other in the second sub-display area AA24, which can be referred to in fig. 4. Since the signal connection lines 112 need to avoid the light emitting regions (corresponding to the pixel openings 252 of the pixel definition layer 250) in the display panel, the routing lines are all routed along the dot matrix structure of the pixels, and therefore, no matter whether the pixel definition layer 250 is made of a light-transmitting material or a non-light-transmitting material, the signal connection lines can be arranged in parallel in the second sub-display area AA24, so as to reduce the mutual interference between the signal connection lines 112. In this embodiment, since it is necessary to avoid the region for disposing the photosensitive device, the signal connection line 112 is not in a straight line state in a partial region, but is bent.
In one embodiment, the signal connection lines 112 may be distributed on different conductive material layers in the second sub-display area AA24 and connected through contact holes (e.g., metal contact holes), so as to realize a cross-layer arrangement. Since the second sub-display area AA24 needs to be provided with other traces while the signal connection line 112 is provided, there is more trace in this area. To ensure that the signal connection line 112 does not affect the routing of other traces, the signal connection line 114 may be placed across the layers through a metal bridge.
In one embodiment, signal shield layer 230 includes an insulating layer 232. The insulating layer 232 is formed between the signal connection line 112 and the first electrode layer 240 for electrically insulating therebetween and preventing crosstalk between signals of the two.
In an embodiment, the signal shielding layer 240 further includes an isolation structure 234 and a planarization layer 236. An isolation structure 234 is formed over the insulating layer 232. A planarization layer 236 is formed over the isolation structure 234 and covers the isolation structure 234, as shown in fig. 3. In this embodiment, the isolation structure 234 is a conductive material to electrically isolate the signal connection line 112 from the first motor layer 240. The isolation structures 234 may also be metal, transparent metal oxide, etc. In an embodiment, to enable the whole display screen to realize a flexible screen, the isolation structure 234 may be provided as graphene or nano material, etc. Since the isolation structure 234 is only used for isolation and does not need to transmit signals, highly flexible and highly resistive materials such as graphene or nano materials can be used. However, the original signal lines in the display screen need to transmit signals, and have certain requirements on the line resistance, so that low-resistance materials such as metal or metal oxide are still adopted. In one embodiment, the isolation structure 234 is connected to a ground line or a reference line (REF) of the display screen to ensure electromagnetic isolation between the signal connection line 112 and the first electrode layer 240, thereby preventing crosstalk.
In the present embodiment, a shielding pattern is formed on the isolation structure 234. The projection of the shielding pattern on the substrate 210 should at least cover an overlapping area between the projection of the signal connection line 112 on the substrate 210 and the projection of the first electrode of the second display panel on the substrate 210, i.e., an area of the Overlay (Overlay area). In other embodiments, the projection of the shielding pattern on the substrate 210 may cover the projection of the signal connection line on the substrate 210 or the projection of the first electrode on the substrate 210.
In one embodiment, the signal connection line 112 and the first electrode in the first electrode layer 240 are disposed as a wave-shaped trace, as shown in fig. 5. Specifically, in the extending direction of the wavy routing wire, the width of the wavy routing wire changes continuously or discontinuously. The continuous width change means that the widths of any two adjacent positions on the wavy routing are different. The width discontinuous change means that the widths of two adjacent positions in a partial area on the signal trace are the same, and the widths of two adjacent positions in the partial area are different. By designing the first electrodes in the second display panel 120 and the signal connection lines 112 as wave-shaped traces, when external light passes through the signal traces, the positions of diffraction fringes generated at different positions of the signal traces are different. The diffraction fringes at different positions are offset with each other, so that the diffraction effect can be effectively weakened, and the photographed graph has high definition when the camera is arranged below the second display panel 120. In one embodiment, the first electrode layer 240 may be an anode layer.
In one embodiment, the pixel defining layer 250 has a pixel opening 252 formed therein. Each pixel opening 252 corresponds to a light emitting structure. The shape of each pixel opening can be circular, oval, dumbbell or gourd-shaped, and particularly, refer to fig. 4 and 6. By arranging the sub-pixels to be circular, elliptical, dumbbell or gourd shaped, the diffraction effect can be also weakened. In addition, the area of each sub-pixel can be enlarged to the maximum extent by a round shape, an oval shape, a dumbbell shape or a gourd shape, and the light transmittance is further improved.
In one embodiment, the first display panel 110 is an AMOLED display panel, and the second display panel 120 is an AMOLED display panel or an AMOLED-like display panel. The AMOLED-like display panel is a structure in which the pixel circuit includes only one switching element (i.e., driving TFT) and has no capacitance. The other structures of the AMOLED-like display panel are the same as those of the AMOLED display panel. The second display panel 120 is described as an AMOLED-like display panel.
Fig. 7 is a cross-sectional view of an AMOLED-like display panel in an embodiment. Referring to fig. 7, the AMOLED display panel includes a substrate 810 and a pixel circuit 820 (i.e., a TFT array) disposed on the substrate 810. A first electrode layer is provided over the pixel circuit 820. The first electrode layer includes a plurality of first electrodes 830. The first electrodes 830 correspond to the pixel circuits 820 one to one. The first electrode 830 here is an anode. The AMOLED-like display panel further includes a pixel defining layer 840 disposed on the first electrode 830. The pixel defining layer 840 has a plurality of openings, and the light emitting structure layer 850 is disposed in the openings to form a plurality of sub-pixels, wherein the sub-pixels correspond to the first electrodes 830 one by one. A second electrode 860 is disposed above the light emitting structure layer 850, and the second electrode 860 is a cathode, which is a planar electrode, that is, a planar electrode formed of a planar electrode material. The pixel circuit 840 is provided with scan lines, data lines, and TFT switching elements. The scanning lines and the data lines are connected to the TFT switching elements. The scan lines control the switching elements of the TFTs to be turned on and off, and the data lines provide driving currents to the first electrodes 830 when the pixels are turned on, so as to control the sub-pixels to emit light.
In the present embodiment, the signal connection line 112 is disposed below the pixel definition layer 840 and below the pixel circuit, so that the two are spatially staggered from each other, thereby reducing crosstalk therebetween. In other embodiments, the signal connection line 112 is disposed under the pixel defining layer 840 and is completed in the same process step as the conductive layer in the pixel defining layer 840, so that additional processes are not required during the manufacturing process, and the manufacturing complexity is not increased. In another embodiment, the signal connection line 112 is disposed under the pixel defining layer 840 and between the pixel circuit and the first electrode layer 830.
In one embodiment, the substrate 810 may be a rigid substrate, such as a transparent substrate, e.g., a glass substrate, a quartz substrate, or a plastic substrate; the substrate 810 may also be a flexible substrate, such as a PI film, to improve the transparency of the device. The optical structure layer 850 may be an OLED (Organic Light-Emitting Diode).
Fig. 8 is a circuit schematic of a pixel circuit 820 in an embodiment. Referring to fig. 8, unlike the pixel circuit of the conventional AMOLED display panel, the pixel circuit 820 includes only a switching device, and does not include a storage capacitor or the like, thereby forming a capacitor-less structure. In this embodiment, the pixel circuit 820 includes one switching device. The switching devices are disposed in one-to-one correspondence with the first electrodes 630, i.e., one sub-pixel corresponds to one switching device. The switching device comprises a first terminal 2a, a second terminal 2b and a control terminal 2c, as will be described in detail later. The scan line is connected to the control terminal 2c of the switching device, the data line is connected to the first terminal 2a of the switching device, and the first electrode 830 is connected to the second terminal 2b of the switching device. As shown in fig. 8. In the pixel circuit 820, the data line is connected to the first end 2a of the switching element, and the scan line is connected to the control end 2c of the switching element, so that the number of switching elements in the pixel circuit 820 can be reduced to one, and the load current of the scan line and the load current of the data line can be greatly reduced.
The scanning lines in the display panel control the pixel circuits 820 to be turned on and off, only the switching voltage required by the switching elements in the pixel circuits 820 is needed to be provided, the current of the light-emitting structures (OLED) is not needed to be input, the load current of the scanning lines is greatly reduced, and the scanning lines can be made of transparent materials such as ITO (indium tin oxide) and the like. When the pixel circuit 820 is turned on, the data line supplies a driving current to the anode to control the sub-pixels to emit light, and the data line only needs to supply the driving current of one sub-pixel at each time, so that the load of the data line is small. Therefore, the data lines can also be made of transparent materials such as ITO and the like, so that the light transmittance of the display screen is improved. The multiple sub-pixels share the surface electrode (cathode), the current of the sub-pixels in one row at each moment is provided by the whole surface cathode, the requirement on the conductivity of the cathode is greatly reduced, the high-transparency electrode can be adopted, the transparency is improved, the integral consistency of the screen is improved, and the negative photoresist is not needed to separate the cathode.
In an embodiment, the first electrode 830 may be disposed in a circular shape, an oval shape, a dumbbell shape, or a gourd shape, which can be specifically referred to fig. 6. The diffraction effect can be also weakened by disposing the first electrode 830 in a circular, oval, dumbbell, or gourd-shaped form. In an embodiment, the shape of the pixel opening in the pixel defining layer 640 is circular, elliptical, dumbbell, or gourd-shaped, as in fig. 6, so that the diffraction effect can be weakened as well. In an embodiment, the signal lines such as the scan lines and the data lines can adopt the wavy trace shown in fig. 5, so as to achieve the effect of improving diffraction.
In this embodiment, the materials and the arrangement of the pixel definition layer 840 and the signal connection lines 112 may be the same as those in the previous embodiments, which are not described herein again.
In one embodiment, the second display panel 120 may be a transparent or transflective display panel. The transparency of the second display panel 120 can be achieved by using materials of each layer having good light transmittance. For example, each structural film layer is made of a material having a light transmittance of greater than 90%, so that the light transmittance of the entire display panel can be greater than 70%. Furthermore, each structural film layer is made of a material with the light transmittance of more than 95%, so that the light transmittance of the display panel is further improved, and even the light transmittance of the whole display panel is over 80%. Specifically, the signal traces may be ITO, IZO, ag + ITO, or Ag + IZO, etc., and the insulating layer is preferably made of SiO 2 ，SiN x And Al 2 O 3 And the pixel definition layer adopts a high-transparency material.
It is understood that the transparency of the second display panel 120 can also be achieved by other technical means. The transparent or semi-transparent and semi-reflective display panel can normally display pictures when in a working state, and when the display panel is in other functional requirement states, external light can penetrate through the display panel to irradiate a photosensitive device and the like arranged below the display panel.
By providing the second display panel 120 as a transparent or transflective display panel, a photosensitive device such as a camera can be provided below the second display panel 120. It can be understood that when the photo sensor does not operate, the second display area AA2 may normally perform dynamic or static image display, and when the photo sensor operates, the second display area AA2 changes along with the change of the display content of the whole display screen, for example, the external image being shot is displayed, or the second display area AA2 may also be in a non-display state, so as to further ensure that the photo sensor can perform light collection through the second display panel 120 of the second display area AA2. In other embodiments, the light transmittances of the first display area AA1 and the second display area AA2 may also be the same, that is, the light transmittances of the first display panel 110 and the second display panel 120 may be the same, so that the whole display screen has a better light transmittance uniformity, and the display screen is ensured to have a better display effect.
An embodiment of the application further provides a display terminal. Fig. 9 is a schematic structural diagram of a display terminal in an embodiment. The display terminal includes an apparatus body 910 and a display 920. The display 920 is disposed on the apparatus body 910, and is connected to the apparatus body 910. The display 920 may adopt the display in any of the foregoing embodiments to display static or dynamic pictures.
Fig. 10 is a schematic structural diagram of an apparatus body 910 in an embodiment. In this embodiment, the device body 910 may have a slotted region 912 and a non-slotted region 914. Photosensitive devices such as a camera 930 and a light sensor may be disposed in the slotted region 912. At this time, the second display area AA2 of the display 920 is attached to the slotted area 914, so that the above-mentioned photosensitive devices such as the camera 930 and the optical sensor can collect external light through the second display area AA2.
In one embodiment, in order to increase the light transmittance, no polarizer may be disposed in the second display area AA2, that is, no polarizer is disposed in the second display panel 120. In addition, the second display panel 120 in the second display area AA2 can effectively improve the diffraction phenomenon generated when the external light transmits through the second display area AA2, so that the quality of the image shot by the camera 930 on the display terminal can be effectively improved, the distortion of the shot image caused by diffraction can be avoided, and the accuracy and the sensitivity of the optical sensor for sensing the external light can be improved.
The display terminal can be a digital device such as a mobile phone, a tablet, a palm computer and an ipod.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (14)
1. A display screen is characterized by comprising a first display area and a second display area which are adjacent; the second display area is at least partially surrounded by the first display area; the first display area and the second display area are used for displaying dynamic or static pictures;
the signal line in the first display area is isolated by the second display area; among the signal lines separated by the second display area, a first signal line is positioned on one side of the second display area, and a second signal line is positioned on the other side of the second display area; a plurality of signal connecting lines are arranged in the second display area; the signal connecting line penetrates through two sides of the second display area and is communicated with the first signal line and the second signal line, and the signal connecting line is a wave-shaped wiring line; in the extending direction of the signal connecting line, the width of the signal connecting line is continuously changed or discontinuously changed.
2. The display screen of claim 1, wherein the second display area comprises a first sub-display area and a second sub-display area which are adjacent; a photosensitive device can be arranged below the second sub-display area; the signal connecting lines are arranged in the first sub-display area.
3. The display screen of claim 2, wherein the display screen comprises a first display panel and a second display panel; the first display panel is arranged in the first display area; the second display panel is arranged in the second display area, and the first display panel is an AMOLED display panel; the second display panel is a PMOLED display panel; the second display panel includes:
a substrate;
a first electrode layer formed on the substrate; and
a pixel defining layer formed on the first electrode layer;
the signal connecting line is arranged below the pixel defining layer and between the first electrode layer and the substrate, and a signal shielding layer is arranged between the signal connecting line and the first electrode layer; or the signal connecting line is arranged below the pixel definition layer and above the first electrode layer, and a signal shielding layer is arranged between the signal connecting line and the first electrode layer.
4. The display screen of claim 3, wherein the first electrode layer comprises a plurality of undulating first electrodes; the first electrodes extend in parallel along the same direction, and a space is reserved between every two adjacent first electrodes; in the extending direction of the first electrode, the width of the first electrode is continuously or discontinuously changed, and the distance is continuously or discontinuously changed; and/or
A plurality of pixel openings are formed in the pixel defining layer, and the pixel openings are circular, oval, dumbbell-shaped or gourd-shaped.
5. The display screen of claim 2, wherein the display screen comprises a first display panel and a second display panel; the first display panel is arranged in the first display area; the second display panel is arranged in the second display area; the first display panel is an AMOLED display panel; the second display panel is an AMOLED display panel or an AMOLED-like display panel; the pixel circuit of the AMOLED-like display panel only comprises one switching element;
the second display panel includes:
a substrate;
a pixel circuit;
a first electrode layer formed on the pixel circuit; and
a pixel defining layer formed on the first electrode layer;
the signal connecting line is arranged below the pixel defining layer and is positioned below the pixel circuit, or the signal connecting line is arranged below the pixel defining layer and is formed in the same process step with a conductive layer in the pixel circuit, or the signal connecting line is arranged below the pixel defining layer and is positioned between the pixel circuit and the first electrode layer; and a signal shielding layer is formed between the signal connecting wire and the first electrode layer.
6. The display screen of claim 5, wherein the first electrode layer comprises a plurality of mutually independent first electrodes; each first electrode corresponds to one light-emitting structure; the first electrode is round, oval, dumbbell-shaped or gourd-shaped; and/or
A plurality of pixel openings are formed on the pixel defining layer; the shape of the pixel opening is circular, oval, dumbbell shape or calabash shape.
7. The display screen of claim 3 or 5, wherein the pixel definition layer of the first sub-display area is made of an opaque material, and the signal connection line is made of a metal or transparent metal oxide material; or the pixel definition layer of the second display area is made of a light-transmitting material, and the signal connecting line is made of a transparent metal oxide material.
8. The display screen of claim 7, wherein the signal connection lines are distributed on different conductive material layers and connected through contact holes; and/or a plurality of signal connecting lines are arranged in parallel with each other in the first sub-display area.
9. A display screen according to claim 3 or 5, characterised in that the signal shielding layer comprises an insulating layer formed between the signal connection lines and the first electrode layer.
10. The display screen of claim 9, wherein the signal shielding layer further comprises:
an isolation structure formed on the insulating layer; and
a planarization layer formed on and covering the isolation structure; the isolation structure material is a conductive material so as to realize electromagnetic isolation between the signal connecting wire and the first electrode layer in a power-on state.
11. The display screen of claim 10, wherein optionally the material of the isolation structure is graphene or a nanomaterial.
12. The display screen of claim 10, wherein the isolation structure comprises a plurality of shielding patterns; the projection of the shielding pattern on the substrate can at least cover the overlapping area between the projection of the signal connecting line on the substrate and the projection of the first electrode on the substrate.
13. The display screen of claim 3 or 5, wherein the light transmittance of each structural film layer material of the second display panel is greater than 90%, and the light transmittance of the second display panel is greater than 70%; and/or
The second display area is a rectangular display area, a circular display area or an oval display area.
14. A display terminal, comprising:
an apparatus body having a device region;
the display screen of any one of claims 1 to 13, overlaid on the device body;
the device area is located below the second display area, and a photosensitive device which penetrates through the screen body of the second display area to collect light is arranged in the device area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811290608.7A CN110767681B (en) | 2018-10-31 | 2018-10-31 | Display screen and display terminal |
| PCT/CN2019/076572 WO2020087820A1 (en) | 2018-10-31 | 2019-02-28 | Display screen and display terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811290608.7A CN110767681B (en) | 2018-10-31 | 2018-10-31 | Display screen and display terminal |
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| CN113744649A (en) * | 2020-05-29 | 2021-12-03 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111653582B (en) * | 2020-06-12 | 2024-01-26 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN114256299A (en) * | 2020-09-25 | 2022-03-29 | 京东方科技集团股份有限公司 | Display panel and display device |
| US11862081B2 (en) | 2020-09-30 | 2024-01-02 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display panel and display device |
| CN112490273B (en) * | 2020-11-30 | 2023-04-18 | 维沃移动通信有限公司 | Display module and electronic equipment |
| CN113096550B (en) * | 2021-04-08 | 2023-01-03 | Oppo广东移动通信有限公司 | Display module assembly and display device |
| CN113794791A (en) * | 2021-09-15 | 2021-12-14 | 合肥维信诺科技有限公司 | Display module and display device |
| CN114200711B (en) * | 2021-12-31 | 2023-09-26 | 厦门天马微电子有限公司 | display device |
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| CN110767681A (en) | 2020-02-07 |
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