CN112310183A - Display substrate, preparation method thereof and display device - Google Patents
Display substrate, preparation method thereof and display device Download PDFInfo
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- CN112310183A CN112310183A CN202011187026.3A CN202011187026A CN112310183A CN 112310183 A CN112310183 A CN 112310183A CN 202011187026 A CN202011187026 A CN 202011187026A CN 112310183 A CN112310183 A CN 112310183A
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims description 273
- 238000005538 encapsulation Methods 0.000 claims description 22
- 239000012044 organic layer Substances 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 43
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- 238000000151 deposition Methods 0.000 description 1
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
-
- 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
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- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/824—Cathodes combined with auxiliary electrodes
-
- 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
- H10K59/1201—Manufacture or treatment
-
- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/131—Interconnections, e.g. wiring lines or terminals
- H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- 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
Abstract
The embodiment of the invention provides a display substrate, a preparation method thereof and a display device, wherein the display substrate comprises a substrate, a light-emitting structure layer arranged on the substrate, a color film structure layer arranged on the light-emitting structure layer and a touch control structure layer arranged on the color film structure layer, the light-emitting structure layer comprises a cathode layer, the touch control structure layer comprises a plurality of touch control electrodes, the color film structure layer comprises a color filter layer and a shading layer surrounding the color filter layer, the shading layer comprises a first conducting part and a second conducting part which are mutually insulated, the first conducting part is used as an auxiliary cathode and connected with the cathode layer, and the second conducting part is used as a bridge electrode and connects adjacent touch control electrodes in a bridge manner; the film layers in the display substrate can be reduced, the working procedures are reduced, and the thickness of the display substrate is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display substrate, a preparation method thereof and a display device.
Background
An Organic Light Emitting Diode (OLED) display device is a development trend of future display products, and has a series of advantages of wide viewing angle, fast response speed, high brightness, high contrast, bright color, Light weight, thin thickness, low power consumption, and the like. Currently, organic light emitting diode display devices have begun to be applied to mobile phone screens.
The integration of the color film technology and the OLED is one of the development directions of flexible panels, and compared with the polarizer technology, the thickness of the display substrate can be reduced, the bending resistance is improved, and the brightness of the display substrate is improved. The color film structure comprises a color filter layer and a shading layer, the shading layer can reduce the reflectivity of the display substrate, and the shading layer is made of black resin.
For a top emission light emitting device, the cathode is a semi-permeable membrane to ensure the light extraction rate of the light emitting device. In order to improve the transparency of the cathode metal material, the thickness of the cathode needs to be reduced, and the thickness of the cathode is generally tens of nanometers. However, the cathode thickness is thin, which greatly increases the resistance. The high resistance cathode can cause the increase of voltage drop, thereby causing uneven brightness of the screen display and reducing the display quality. The auxiliary electrode is adopted to reduce the resistance of the cathode, thereby reducing the voltage drop.
However, the color film structure, the auxiliary cathode, the touch structure and other film layers are added in the display substrate, so that the thickness of the display substrate is increased, the preparation procedures of the display substrate are increased, and the production cost is increased.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a display substrate, a method for manufacturing the same, and a display device, which can reduce film layers in the display substrate, reduce the thickness of the display substrate, reduce the number of processes, and reduce the production cost.
In order to solve the above technical problem, an embodiment of the present invention provides a display substrate, including a substrate, a light emitting structure layer disposed on the substrate, a color film structure layer disposed on the light emitting structure layer, and a touch control structure layer disposed on the color film structure layer, where the light emitting structure layer includes a cathode layer, the touch control structure layer includes a plurality of touch control electrodes, the color film structure layer includes a color filter layer and a light shielding layer surrounding the color filter layer, the light shielding layer includes a first conductive part and a second conductive part that are insulated from each other, the first conductive part is used as an auxiliary cathode and connected to the cathode layer, and the second conductive part is used as a bridge electrode and connects adjacent touch control electrodes by a bridge.
In an exemplary embodiment, the cathode layer has an opening formed therein, and an orthogonal projection of the opening on the substrate overlaps with an orthogonal projection of the second conductive portion on the substrate.
In an exemplary embodiment, the first and second conductive portions are formed in the same film layer.
In an exemplary embodiment, the light emitting device further includes an encapsulation layer disposed on the light emitting structure layer, the encapsulation layer including a first inorganic layer between the cathode layer and the light shielding layer, the first inorganic layer having a first opening formed therein and communicating with the cathode layer, and the first conductive part being connected to the cathode layer through the first opening.
In an exemplary embodiment, the light emitting device further includes an encapsulation layer disposed on the light emitting structure layer, the encapsulation layer includes a first organic layer located between the light shielding layer and the touch control structure layer, a second opening hole communicated with the touch control electrode is formed in the first organic layer, and the second conductive portion is connected to the touch control electrode bridge through the second opening hole.
In an exemplary embodiment, the touch panel further includes an encapsulation layer disposed on the light emitting structure layer, and the encapsulation layer includes a second organic layer disposed on the touch structure layer and a second inorganic layer disposed on the second organic layer.
In an exemplary embodiment, the light shielding layer uses a black conductive material.
The embodiment of the invention also provides a display device which comprises the display substrate.
The embodiment of the invention also provides a preparation method of the display substrate, which comprises the following steps:
forming a light emitting structure layer on a substrate, the light emitting structure layer including a cathode layer;
forming a color film structure layer on the light-emitting structure layer, wherein the color film structure layer comprises a color filter layer and a light shielding layer surrounding the color filter layer, the light shielding layer comprises a first conductive part and a second conductive part which are insulated from each other, and the first conductive part is used as an auxiliary cathode and is connected with the cathode layer;
and forming a touch control structure layer on the color film structure layer, wherein the touch control structure layer comprises a plurality of touch control electrodes, and the second conductive part is used as a bridge electrode and is connected with the adjacent touch control electrodes in a bridge manner.
In an exemplary embodiment, the first conductive portion and the second conductive portion are prepared by a same manufacturing process.
The invention provides a display substrate, a preparation method thereof and a display device.A light shielding layer is divided into a first conductive part and a second conductive part which are insulated from each other, and the first conductive part is used as an auxiliary cathode and is connected with a cathode layer, so that the resistance of the cathode layer is reduced, and the voltage drop is reduced; the second conductive part is used as a bridge electrode to bridge the adjacent touch electrodes, so that the auxiliary cathode, the shading layer and the bridge electrode are integrated in the same film layer, the working procedures are reduced, the process is greatly simplified, the cost is reduced, the number of the film layers in the display substrate is reduced, and the thickness of the display substrate is reduced.
Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention. The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
FIG. 1 is a cross-sectional view of a display substrate;
FIG. 2 is a cross-sectional view of a display substrate according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating a structure of a light-shielding layer in a display substrate according to an embodiment of the invention.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Fig. 1 is a cross-sectional view of a display substrate. As shown in fig. 1, the display substrate includes a substrate 10, a light emitting structure layer 20 disposed on the substrate 10, an encapsulation layer 30 disposed on the light emitting structure layer 20, an auxiliary cathode 50 disposed on the encapsulation layer 30, a color filter structure layer 40 disposed on the auxiliary cathode 50, and a touch control structure layer 60 disposed on the color filter structure layer 40. The touch structure layer 60 includes a bridge electrode 602 disposed on the color film structure layer 40 and a touch electrode 601 disposed on the bridge electrode 602, and the bridge electrode 602 connects the adjacent touch electrodes 601 in a bridge manner. The color film structure layer 40, the auxiliary cathode 40 and the bridge electrode 602 in the display substrate are respectively divided into three film layers, so that the thickness of the display substrate is increased, the preparation procedures of the display substrate are increased, and the production cost is improved.
The embodiment of the invention provides a display substrate which comprises a substrate, a light-emitting structure layer arranged on the substrate, a color film structure layer arranged on the light-emitting structure layer and a touch control structure layer arranged on the color film structure layer, wherein the light-emitting structure layer comprises a cathode layer, the touch control structure layer comprises a plurality of touch control electrodes, the color film structure layer comprises a color filter layer and a shading layer surrounding the color filter layer, the shading layer comprises a first conducting part and a second conducting part which are mutually insulated, the first conducting part is used as an auxiliary cathode and connected with the cathode layer, and the second conducting part is used as a bridge electrode and connects adjacent touch control electrodes in a bridge manner.
FIG. 2 is a cross-sectional view of a display substrate according to an embodiment of the invention; FIG. 3 is a schematic diagram illustrating a structure of a light-shielding layer in a display substrate according to an embodiment of the invention. As shown in fig. 1 and 2, the display substrate according to the embodiment of the present invention is a top emission device. The display substrate comprises a substrate 10, a driving structure layer 70 arranged on the substrate 10, a light emitting structure layer 20 arranged on the driving structure layer 70, a color film structure layer 40 arranged on the light emitting structure layer 20, and a touch control structure layer 60 arranged on the color film structure layer 40. The driving structure layer 70 mainly includes a plurality of Thin Film Transistors (TFTs) for controlling light emission of the light emitting structure layer. The light emitting structure layer 20 mainly includes an anode layer, a light emitting layer disposed on the anode, and a cathode layer 201 disposed on the light emitting layer, and the light emitting structure layer 20 is used for emitting display light. The color film structure layer 40 includes a plurality of color filter layers and a light-shielding layer 401 surrounding the color filter layers, and each color filter layer is disposed in one-to-one correspondence with each light-emitting layer. The light-shielding layer 401 is used to reduce the reflectance of the display substrate. The touch structure layer 60 includes a plurality of touch electrodes 601, and the plurality of touch electrodes 601 surround the light emitting layer. A stable capacitance is formed between the touch electrodes 601. When a finger touches the touch structure layer 60, the capacitance between the touch electrodes 601 changes due to the touch, so that the touch position is determined, and a corresponding touch operation is realized. The cathode layer 201 may be a transparent or semitransparent metal layer; the light-shielding layer 401 may use a black conductive material. The type of the touch structure layer 60 is not limited, and the touch structure layer 60 may be a self-contained touch structure or a mutual-contained touch structure.
As shown in fig. 1 and 2, the light-shielding layer 401 in the display substrate includes a first conductive portion 4011 and a second conductive portion 4012 which are insulated from each other. The first conductive portion 4011 and the second conductive portion 4012 are disconnected from each other and are not electrically connected. The first conductive portion 4011 serves as an auxiliary cathode and is connected to the cathode layer 201, so that the resistance of the cathode layer 201 is reduced, and thus, the voltage drop is reduced and the display effect is improved. The second conductive portion 4012 serves as a bridge electrode for bridging the adjacent touch electrodes 601.
According to the display substrate, the light shielding layer 401 is divided into the first conducting part 4011 and the second conducting part 4012 which are insulated from each other, so that the first conducting part 4011 serves as an auxiliary cathode and is connected with the cathode layer 201, the second conducting part 4012 serves as a bridge electrode, and the adjacent touch electrodes 601 are in bridge connection, and therefore the auxiliary cathode, the light shielding layer 401 and the bridge electrodes are integrated in the same film layer, working procedures are reduced, the process is greatly simplified, the cost is reduced, the number of the film layers in the display substrate is reduced, and the thickness of the display substrate is reduced.
As shown in fig. 1, the cathode layer 201 has an opening 80, and the cathode layer 201 is not deposited in the opening 80. The opening 80 corresponds to the second conductive part 4012, that is, an orthogonal projection of the opening 80 on the substrate 10 overlaps with an orthogonal projection of the second conductive part 4012 on the substrate 10, so that interference of the cathode layer 201 on the touch electrode 601 is reduced, and capacitance formed between the cathode layer 201 and the second conductive part 4012 is avoided.
As shown in fig. 1, the first conductive part 4011 and the second conductive part 4012 are formed in the same film layer, that is, the first conductive part 4011 and the second conductive part 4012 are prepared by the same manufacturing process, so that the process is greatly simplified, and the cost is reduced.
In an exemplary embodiment, the display substrate according to an embodiment of the present invention further includes an encapsulation layer 30, the encapsulation layer 30 includes a first inorganic layer 301 located between the cathode layer 201 and the light-shielding layer 401, a first opening is formed in the first inorganic layer 301 and is in communication with the cathode layer 201, and the first conductive portion 4011 in the light-shielding layer 401 is connected to the cathode layer 201 through the first opening.
In an exemplary embodiment, the encapsulation layer 30 further includes a first organic layer 302 located between the light-shielding layer 401 and the touch structure layer 60, a second opening hole communicated with the touch electrode 601 is formed in the first organic layer 302, and the second conductive portion 4012 is bridged with the touch electrode 601 through the second opening hole.
In an exemplary embodiment, the encapsulation layer 30 further includes a second organic layer 303 disposed on the touch structure layer 60 and a second inorganic layer 304 disposed on the second organic layer 303.
In the embodiment of the present invention, the touch structure layer 60 and the color film structure layer 40 are both embedded in the encapsulation layer 30. The shading layer 401(BM) in the color filter structure layer 40 is made of a black conductive material, and forms an array around the light emitting layer, that is, the shading layer 401 covers the area between the pixels. The color filter layer corresponds to the light-emitting layer. The light-shielding layer 401 surrounds the color filter layers and separates adjacent color filter layers. Wherein the color filter layer comprises BF, RF and GF. The light-shielding layer 401 includes two regions, i.e., a first conductive portion 4011 and a second conductive portion 4012, and the first conductive portion 4011 and the second conductive portion 4012 are insulated from each other and disconnected from each other without electrical connection. The first conductive portion 4011 serves as an auxiliary cathode and is connected to the cathode layer 201. The second conductive portion 4012 serves as a bridge electrode for bridging the adjacent touch electrodes 601, thereby simplifying the process and reducing the thickness of the display substrate.
The following further illustrates the technical solution of this embodiment through the manufacturing process of the display substrate of this embodiment.
As shown in fig. 1, the process of preparing the display substrate includes:
1) the driving structure layer 70 is formed on the substrate 10, and the light emitting structure layer 20 is formed on the driving structure layer 70, the light emitting structure layer 20 mainly includes an anode layer, a light emitting layer formed on the anode layer, and a cathode layer 201 formed on the light emitting layer, and the light emitting structure layer 20 is used for emitting light. The driving structure layer 70 mainly includes a plurality of Thin Film Transistors (TFTs) for controlling light emission of the light emitting structure layer 20. In the cathode layer 201, openings 80 are formed, no evaporation of a cathode material is performed in the openings 80, and the areas of the openings 80 are located between the light-emitting layers and correspond to the second conductive portions 4012, that is, the orthographic projection of the openings 80 on the substrate 10 overlaps the orthographic projection of the second conductive portions 4012 on the substrate 10. The control openings 80 do not affect the electrical connection of the entire cathode layer 201.
2) A first inorganic film is deposited on the light emitting structure layer 20, the first inorganic film is formed into a first inorganic layer 301 through a patterning process, a first opening is formed in the first inorganic layer 301, the first inorganic layer 301 in the first opening is etched away, and a surface of the cathode layer 201 is exposed.
3) Depositing a black conductive material film on the cathode layer 201, forming a light shielding layer 401 pattern by the black conductive material film through exposure and etching processes, wherein the light shielding layer 401 pattern comprises a first conductive part 4011 and a second conductive part 4012, and the first conductive part 4011 and the second conductive part 4012 are insulated and disconnected from each other and are not electrically connected. The first conductive part 4011 is used as an auxiliary cathode and is connected to the cathode layer 201 through a first opening in the first inorganic layer 301, and the second conductive part 4012 is used as a bridge electrode for bridging the adjacent touch electrodes 601. The black conductive material may be metal or nonmetal, and the embodiment is not limited herein.
4) A first organic film is coated on the light-shielding layer 401 pattern, the first organic film is formed into a first organic layer 302 by a patterning process, a second opening is formed in the first organic layer 302, the first organic layer 302 in the second opening is etched away, and a surface of the second conductive portion 4012 is exposed. The first organic layer 302 serves as an insulating layer of the touch structure layer 60.
5) A metal film is deposited on the first organic layer 302, and the metal film is patterned into a touch electrode 601 pattern by exposure and etching, and the touch electrode 601 forms the touch structure layer 60. The touch electrode 601 pattern is bridged to the second conductive portion 4012 through the second opening at the bridge crossing portion.
6) A second organic film is coated on the touch structure layer 60, and the second organic film is exposed to form a second organic layer 303. Wherein the second organic layer 303 serves as a protective layer.
7) A second inorganic thin film is deposited on the second organic layer 303, and the second inorganic thin film is formed into a second inorganic layer 304 by a patterning process. Wherein the second inorganic layer 304 serves as an inorganic encapsulation layer. The first inorganic layer 301, the first organic layer 302, the second organic layer 303, and the second inorganic layer 304 combine to form the encapsulation layer 30.
The light-shielding layer 401 pattern and the touch electrode 601 pattern are arranged around the light-emitting layer, and the light-emitting layer pattern is not limited in this embodiment. The color film structure layer 40 and the touch control structure layer 60 are embedded in the encapsulation layer 30, and the shading layer 401 is used as an auxiliary cathode and a bridge electrode in the touch control structure layer at the same time. In the embodiment, the auxiliary cathode, the shading layer 401 and the bridge electrode are integrated in the same film layer, so that 2 processes are reduced, the process is greatly simplified, the cost is reduced, the number of film layers in the display substrate is reduced, and the thickness of the display substrate is reduced.
The embodiment of the invention also provides a display device which comprises the display substrate of the embodiment. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
The embodiment of the invention also provides a preparation method of the display substrate, which comprises the following steps:
forming a light emitting structure layer on a substrate, the light emitting structure layer including a cathode layer;
forming a color film structure layer on the light-emitting structure layer, wherein the color film structure layer comprises a color filter layer and a light shielding layer surrounding the color filter layer, the light shielding layer comprises a first conductive part and a second conductive part which are insulated from each other, and the first conductive part is used as an auxiliary cathode and is connected with the cathode layer;
and forming a touch control structure layer on the color film structure layer, wherein the touch control structure layer comprises a plurality of touch control electrodes, and the second conductive part is used as a bridge electrode and is connected with the adjacent touch control electrodes in a bridge manner.
In an exemplary embodiment, the first conductive portion and the second conductive portion are prepared by a same manufacturing process.
In the description of the embodiments of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A display substrate is characterized by comprising a substrate, a light emitting structure layer arranged on the substrate, a color film structure layer arranged on the light emitting structure layer and a touch control structure layer arranged on the color film structure layer, wherein the light emitting structure layer comprises a cathode layer, the touch control structure layer comprises a plurality of touch control electrodes, the color film structure layer comprises a color filter layer and a shading layer surrounding the color filter layer, the shading layer comprises a first conducting part and a second conducting part which are mutually insulated, the first conducting part is used as an auxiliary cathode and connected with the cathode layer, and the second conducting part is used as a bridge electrode and connects adjacent touch control electrodes in a bridge mode.
2. The display substrate according to claim 1, wherein an opening is formed in the cathode layer, and an orthogonal projection of the opening on the substrate overlaps with an orthogonal projection of the second conductive portion on the substrate.
3. The display substrate of claim 1, wherein the first conductive portion and the second conductive portion are formed in a same film layer.
4. The display substrate according to claim 1, further comprising an encapsulation layer disposed on the light emitting structure layer, wherein the encapsulation layer comprises a first inorganic layer disposed between the cathode layer and the light shielding layer, wherein a first opening communicating with the cathode layer is formed in the first inorganic layer, and wherein the first conductive portion is connected to the cathode layer through the first opening.
5. The display substrate according to claim 1, further comprising an encapsulation layer disposed on the light emitting structure layer, wherein the encapsulation layer comprises a first organic layer located between the light shielding layer and the touch structure layer, a second opening is formed in the first organic layer and is in communication with the touch electrode, and the second conductive portion is connected to the touch electrode bridge through the second opening.
6. The display substrate of claim 1, further comprising an encapsulation layer disposed on the light emitting structure layer, wherein the encapsulation layer comprises a second organic layer disposed on the touch structure layer and a second inorganic layer disposed on the second organic layer.
7. The display substrate according to claim 1, wherein the light-shielding layer is made of a black conductive material.
8. A display device comprising the display substrate according to any one of claims 1 to 7.
9. A method for preparing a display substrate is characterized by comprising the following steps:
forming a light emitting structure layer on a substrate, the light emitting structure layer including a cathode layer;
forming a color film structure layer on the light-emitting structure layer, wherein the color film structure layer comprises a color filter layer and a light shielding layer surrounding the color filter layer, the light shielding layer comprises a first conductive part and a second conductive part which are insulated from each other, and the first conductive part is used as an auxiliary cathode and is connected with the cathode layer;
and forming a touch control structure layer on the color film structure layer, wherein the touch control structure layer comprises a plurality of touch control electrodes, and the second conductive part is used as a bridge electrode and is connected with the adjacent touch control electrodes in a bridge manner.
10. The method of manufacturing a display substrate according to claim 9, wherein the first conductive portion and the second conductive portion are manufactured by a same manufacturing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187026.3A CN112310183B (en) | 2020-10-29 | 2020-10-29 | Display substrate, preparation method thereof and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187026.3A CN112310183B (en) | 2020-10-29 | 2020-10-29 | Display substrate, preparation method thereof and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112310183A true CN112310183A (en) | 2021-02-02 |
| CN112310183B CN112310183B (en) | 2024-01-26 |
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| CN113594388A (en) * | 2021-07-29 | 2021-11-02 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof and display device |
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