CN113594210A - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
- Publication number
- CN113594210A CN113594210A CN202110855684.3A CN202110855684A CN113594210A CN 113594210 A CN113594210 A CN 113594210A CN 202110855684 A CN202110855684 A CN 202110855684A CN 113594210 A CN113594210 A CN 113594210A
- Authority
- CN
- China
- Prior art keywords
- light
- substrate
- light shielding
- display area
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—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
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
-
- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
Abstract
The invention provides a display panel and a manufacturing method thereof, wherein the display panel comprises: the display device comprises a first display area and a second display area adjacent to the first display area, wherein the light transmittance of the first display area is greater than that of the second display area, the first display area comprises a plurality of light-transmitting areas and a plurality of first pixel unit arrangement areas, and the plurality of first pixel unit arrangement areas comprise a plurality of first pixel units; the display panel further includes: a substrate base plate; the light shielding layer comprises a first light shielding part, the first light shielding part is arranged on one side, close to the substrate, of the first pixel units, the first light shielding part comprises a plurality of first light shielding patterns, and orthographic projections of the first light shielding patterns on the substrate coincide with orthographic projections of the first pixel units on the substrate. Diffraction in the light transmission process can be effectively avoided through the first shading patterns, the light diffraction degree in the light-transmitting area is reduced, and the imaging quality of the sensor in the first display area is improved.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a display panel and a manufacturing method thereof.
Background
With the development of consumer electronics products such as mobile phones including display panels and cameras, people's demands for these products have not only limited functionality, but also turned to aspects of design, artistry and good visual experience, such as full-screen with high screen ratio, which is becoming more popular. The screen occupation ratio is the ratio of the screen area to the whole machine area, and higher screen occupation ratio can bring better visual experience to users.
Taking a mobile phone as an example, because the front of the mobile phone needs to place a camera, a light sensor and other components, the existing solution is to design a non-display area on the top of the screen, for example, the widely adopted solutions such as "bang screen" and "water drop screen", but it is difficult to achieve the real effect of full screen display.
At present, in order to improve the screen ratio and simultaneously realize functions such as front-end camera shooting, a technology of setting a screen lower shooting area in a screen display area is provided, the screen lower shooting area can be provided with a light transmission area besides a pixel unit for realizing the display function, and a front-end camera can realize the front-end shooting function through the light transmission area in the screen lower shooting area, however, in the current front-end shooting area, the light diffraction phenomenon of the light transmission area is serious.
Disclosure of Invention
The present invention is directed to a display panel and a method for fabricating the same, which overcome the problem of light diffraction in the transparent and visible region of the display panel, and improve the display quality of the normal display region of the display panel.
In order to solve the above problems, the present invention provides a display panel, including: the display device comprises a first display area and a second display area adjacent to the first display area, wherein the light transmittance of the first display area is greater than that of the second display area, the first display area comprises a plurality of light-transmitting areas and a plurality of first pixel unit arrangement areas, and the plurality of first pixel unit arrangement areas comprise a plurality of first pixel units; the display panel includes: a substrate base plate; the light shielding layer comprises a first light shielding part, the first light shielding part is arranged on one side, close to the substrate, of the first pixel units, the first light shielding part comprises a plurality of first light shielding patterns, and orthographic projections of the first light shielding patterns on the substrate are overlapped with orthographic projections of the first pixel units on the substrate.
As an optional technical solution, the light shielding layer further includes a second light shielding portion adjacent to the first light shielding portion; the second display area comprises a plurality of second pixel unit arrangement areas, the plurality of second pixel unit arrangement areas comprise a plurality of second pixel units, the plurality of second pixel units are positioned on one side of the substrate, and the arrangement density of the plurality of second pixel units in the second display area is greater than that of the plurality of first pixel units in the first display area; the second shading parts are arranged on one sides of the second pixel units close to the substrate, and orthographic projections of the second shading parts on the substrate are overlapped with the second display areas.
As an alternative solution, the second light shielding portion includes a plurality of second light shielding patterns; orthographic projections of the second light shielding patterns on the substrate coincide with orthographic projections of the second pixel units on the substrate.
As an optional technical solution, the display panel further includes a third display area adjacent to the second display area, and the third display area includes a plurality of light-transmitting areas; the light-shielding layer further comprises a third light-shielding portion adjacent to the second light-shielding portion, the third light-shielding portion comprising a plurality of openings; wherein, the orthographic projection of the plurality of openings on the substrate base plate and the orthographic projection of the plurality of light-transmitting areas on the substrate base plate are superposed.
As an optional technical solution, the substrate is a flexible transparent substrate, the flexible transparent substrate includes a first surface and a second surface opposite to each other, and the light shielding layer covers the first surface or the second surface; or the substrate base plate is a flexible transparent base plate with a multilayer structure, the flexible transparent base plate with the multilayer structure comprises an upper base plate and a lower base plate which are arranged in a stacked mode, and the light shielding layer is clamped between the upper base plate and the lower base plate.
As an optional technical solution, the light shielding layer is one or a combination of a metal light shielding layer, an amorphous silicon light shielding layer, and an organic resin light shielding layer.
The invention also provides a manufacturing method of the display panel, which comprises the following steps:
providing a substrate base plate;
forming a light shielding layer on at least one side surface of the substrate base plate or in the substrate base plate;
patterning the first shading part of the shading layer to form a plurality of first shading patterns; and
forming a plurality of first pixel units above the plurality of first shading patterns;
wherein orthographic projections of the first light shielding patterns on the substrate coincide with orthographic projections of the first pixel units in the first display area of the display panel on the substrate.
As an optional technical solution, the method further comprises: patterning the second light shielding part of the light shielding layer to form a plurality of second light shielding patterns; the second light-shielding area is adjacent to the first light-shielding area, orthographic projections of the second light-shielding patterns on the substrate are overlapped with orthographic projections of the second pixel units in the second display area of the display panel on the substrate, and the second display area is adjacent to the first display area.
As an optional technical solution, the step of patterning the first light shielding portion of the light shielding layer to form a plurality of first light shielding patterns further includes:
coating photoresist on the shading layer; patterning the first region of the photoresist to form a plurality of first lithographic patterns; and etching the first light shielding part of the light shielding layer by taking the plurality of first photoetching patterns as a mask to form a plurality of first light shielding patterns.
As an optional technical scheme, the light shielding layer is an amorphous silicon light shielding layer, and the substrate is a flexible polyimide transparent substrate; the manufacturing method of the display panel further comprises the following steps: depositing the amorphous silicon shading layer on the first surface or the second surface opposite to the flexible polyimide transparent substrate; or the flexible polyimide transparent substrate comprises an upper polyimide film and a lower polyimide film which are laminated, and the amorphous silicon shading layer is deposited between the upper polyimide film and the lower polyimide film.
Compared with the prior art, the display panel comprises a first display area for transparent display, a substrate and a light shielding layer, wherein orthographic projections of a plurality of first light shielding patterns in the first light shielding part of the light shielding layer on the substrate are overlapped with orthographic projections of a plurality of first pixel units in the first display area on the substrate, so that diffraction in the light transmission process can be effectively avoided, the light diffraction degree in the light transmitting area is reduced, and the imaging quality of a sensor in the first display area is improved.
In addition, the display panel further includes a second display region adjacent to the first display region; the light-shielding layer further comprises a second light-shielding part adjacent to the first light-shielding part; the second shading part is used for preventing external light from entering the plurality of second pixel units of the second display area from the substrate, and the display quality of the second display area is improved.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a display panel according to an embodiment of the invention.
Fig. 2 is an enlarged schematic view of a first display region of the display panel in fig. 1 from a top view.
Fig. 3 is an enlarged schematic view of a first light-shielding portion of a light-shielding layer of the display panel in fig. 1 in a top view.
Fig. 4 is a schematic cross-sectional view of the display panel of fig. 1 along a dotted line.
Fig. 5 is an enlarged schematic view of fig. 4 at the dotted line.
Fig. 6 is a schematic cross-sectional view of a display panel according to another embodiment of the invention.
FIG. 7 is a cross-sectional view of a display panel according to another embodiment of the present invention.
Fig. 8 is a flowchart illustrating a method for fabricating a display panel according to an embodiment of the invention.
Fig. 9 to 14 are schematic diagrams illustrating a patterning process of a light shielding layer of a display panel according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the existing display panel adopting the under-screen camera shooting technology, a transparent display area is reserved in the display panel and generally comprises a light transmission area and a pixel setting area, wherein a pixel unit for displaying is arranged in the pixel setting area, and the light transmission area is used for transmitting external light so as to enable a camera to form an image; the light emitting elements in the pixel arrangement region are used to realize normal display. It can be understood that when the camera is used for collecting images, the display function of the transparent display area is closed, and the transparent display area is in a transparent state. Because the pixel unit is arranged in the transparent display area, when external light enters the light-transmitting area and is used for camera imaging, the external light is easy to diffract with a driving circuit, signal wiring and the like of the pixel unit in the transmission process, the light transmittance of the light-transmitting area is interfered, and the imaging quality is further reduced.
As shown in fig. 1 to 5, an embodiment of the present invention provides a display panel 100, which includes a first display region 10 and a second display region 20 adjacent to the first display region 10, wherein a light transmittance of the first display region 10 is greater than a light transmittance of the second display region 20, the first display region 10 includes a plurality of light-transmitting regions 101 and a plurality of first pixel unit disposing regions 102, and the plurality of first pixel unit disposing regions includes a plurality of first pixel units; the display panel 100 includes: the light shielding layer 40 comprises a first light shielding portion 41, the first light shielding portion 41 is located between the plurality of first pixel units and the substrate 30, the first light shielding portion 41 comprises a plurality of first light shielding patterns 412, and orthographic projections of the plurality of first light shielding patterns 412 on the substrate 30 are overlapped with orthographic projections of the plurality of first pixel units on the substrate 30.
The display panel 100 provided in this embodiment is suitable for a display device that needs to be provided with a sensor under a screen, where the sensor may be a camera. Since the camera has a high light requirement, the first display region 10 opposite to the camera needs to satisfy a high light transmittance. In addition, the aperture of the camera for receiving light is generally circular, and thus, the first display area 10 is exemplarily illustrated as a circular area in fig. 1, but not limited thereto.
As shown in fig. 2, the first display region 10 includes a plurality of light-transmitting regions 101 and a plurality of pixel unit setting regions 102, and at least one pixel unit may be set in each pixel unit setting region 102 for realizing normal display of the first display region 10; the light-transmitting area 101 is used for transmitting external light to enable the under-screen camera to image. It will be appreciated that when the camera is used to capture an image, the normal display function of the first display area 10 is switched off, and at this time the first display area 10 is displayed in a transparent state.
In this embodiment, since each pixel unit needs to be provided with a corresponding light emitting element, a corresponding driving circuit, and a corresponding signal trace, a region between any two adjacent four pixel unit arrangement regions 102 is defined as a light-transmitting region 101.
As shown in fig. 2 to 5, the first light shielding portion 41 of the light shielding layer 40 includes a plurality of first light shielding patterns 412, and orthographic projections of the plurality of first light shielding patterns 412 on the substrate 30 and orthographic projections of the plurality of first pixel units on the substrate 30 are overlapped. Due to the shielding effect of the first shading pattern 412, diffraction in the light transmission process in the first display area 10 can be effectively avoided, the light diffraction degree in the light-transmitting area 101 is reduced, and the problems that the light transmittance of the first display area 10 is low and the imaging image of the camera is not good are further solved.
The driving circuits and the signal traces of the first pixel units in the first display area 10 of the display panel 100 are, for example, directly formed in the first pixel unit disposing areas 102, and the first light shielding pattern 412 is used for shielding the corresponding driving circuits and signal traces. In addition, an orthographic projection of the first light shielding pattern 412 on the substrate base plate 10 completely or at least partially coincides with an orthographic projection of the driving circuit and the signal wiring of the first pixel unit on the substrate base plate 10.
In this embodiment, the first light shielding portion 41 includes a plurality of first light shielding patterns 412 and a plurality of first hollow-out areas 411, each first hollow-out area 411 is adjacent to each first light shielding pattern 412, and each first hollow-out area 411 is opposite to each light transmitting area 101, so as to allow external light to transmit into the first display area 10 and be recognized by the camera for imaging.
In the display panel 100, the second display area 20 includes a plurality of second pixel unit disposing areas (not shown), the plurality of second pixel unit disposing areas include a plurality of second pixel units (not shown), the plurality of second pixel units are disposed on one side of the substrate 30, an arrangement density of the plurality of second pixel units in the second display area 20 is greater than an arrangement density of the plurality of first pixel units in the first display area 10, that is, the second display area 20 is a normal display area, and the first display area 10 is an under-screen image capture display area.
As shown in fig. 4, the light shielding layer 40 further includes a second light shielding portion 42 adjacent to the first light shielding portion 41, and an orthographic projection of the second light shielding portion 42 on the substrate 30 coincides with the second display area 20, which is used for shielding light in the external environment from entering the second display area 20 from the substrate 30 to cause a change in light emitting characteristics of the plurality of second pixel units in the second display area 20, thereby improving the display quality in the second display area 20.
The second light-shielding portion 42 may be a film structure covering the entire surface, for example, but not limited to, the first surface of the substrate 30.
In a preferred embodiment, the second light shielding portion 42 further includes a plurality of second light shielding patterns (not shown), and orthographic projections of the plurality of second light shielding patterns on the substrate 30 coincide with orthographic projections of the plurality of second pixel units on the substrate 30.
In other embodiments of the present invention, the display panel may further include a third display area adjacent to the second display area, the third display area being reused as the under-screen fingerprint identification area; in the thickness direction of the substrate base plate, a third shading part of the shading layer is opposite to the third display area, the third shading part is not provided with shading patterns, and an opening is formed and used for increasing the transmittance of light in the third display area and improving the imaging quality of the optical sensor in the fingerprint identification area under the screen. Preferably, the third display area further includes a plurality of light-transmitting areas without traces, the third light-shielding portion includes a plurality of openings, and orthographic projections of the plurality of openings on the substrate coincide with orthographic projections of the plurality of light-transmitting areas.
As shown in fig. 4, in the display panel 100 provided in the present embodiment, the base substrate 30 is, for example, a flexible transparent substrate; the light-shielding layer 40 covers a first surface of the substrate 30, where the first surface is a side surface of the substrate 30 close to the first pixel units and the second pixel units.
As shown in fig. 6, in the display panel 200 provided in another embodiment of the present invention, the substrate 30 is, for example, a flexible transparent substrate; the light shielding layer 240 is disposed on a second surface of the substrate 30, where the second surface is a side surface of the substrate 30 away from the first pixel units and the second pixel units.
The light shielding layer 240 includes a first light shielding portion 241 and a second light shielding portion 242 adjacent to each other, wherein the first light shielding portion 241 and the second light shielding portion 242 have the same structure as the first light shielding portion 41 and the second light shielding portion 42 in the display panel 100, and the description of the first light shielding portion 41 and the second light shielding portion 42 can be referred to, and will not be repeated.
As shown in fig. 7, in a display panel 300 provided in a further embodiment of the present invention, a substrate 310 is, for example, a flexible transparent substrate having a multilayer structure, the multilayer flexible transparent substrate includes an upper substrate 312 and a lower substrate 311 which are stacked, and a light shielding layer 340 is interposed between the upper substrate 312 and the lower substrate 311.
The light shielding layer 340 includes a first light shielding portion 341 and a second light shielding portion 42 adjacent to each other, wherein the first light shielding portion 341 and the second light shielding portion 342 have the same structure as the first light shielding portion 41 and the second light shielding portion 42 in the display panel 100, and the description of the first light shielding portion 41 and the second light shielding portion 42 may be referred to, and will not be repeated.
In addition, like reference numerals in fig. 4, 6 and 7 described above represent like elements, having similar functions.
In a preferred embodiment, the base substrate 30 is, for example, a polyimide flexible transparent substrate.
In a preferred embodiment, the light shielding layer 40, 240, 340 may be one or a combination of a metal light shielding layer, an amorphous silicon (a-Si) light shielding layer, and an organic resin light shielding layer. That is, the light-shielding layer has a multilayer structure including a light-shielding layer having a multilayer structure formed by stacking one or more of a metal light-shielding layer, an amorphous silicon light-shielding layer, and an organic resin light-shielding layer.
Among them, the organic resin light shielding layer is, for example, a yellow light absorbing light shielding layer.
The light-shielding layers 40, 240, and 340 may be an organic light-shielding film or a metal light-shielding film separately prepared in advance, and the light-shielding film is attached to the first surface or the second surface of the base substrate 30 by attaching.
When the light-shielding layers 40, 240, and 340 are amorphous silicon light-shielding layers, the amorphous silicon light-shielding layers are formed on the surface of the flexible transparent substrate or inside the flexible transparent substrate by vapor deposition, and then a plurality of corresponding first light-shielding patterns and a plurality of corresponding second light-shielding patterns are formed on the first light-shielding portions and the second light-shielding portions of the amorphous silicon light-shielding layers by patterning process. The first shading patterns are used for overcoming diffraction in the light transmission process and reducing the light diffraction degree in the light-transmitting area; the plurality of second light shielding patterns are used for overcoming the influence of light rays entering the second display area from one side of the substrate base plate on the light emitting characteristics of the plurality of second pixel units.
As shown in fig. 8, the present invention further provides a method 1000 for manufacturing a display panel, which includes:
providing a substrate base plate;
forming a light shielding layer on at least one side surface of the substrate base plate or in the substrate base plate;
patterning the first shading part of the shading layer to form a plurality of first shading patterns; and
forming a plurality of first pixel units above the plurality of first shading patterns;
wherein orthographic projections of the first light shielding patterns on the substrate and orthographic projections of the first pixel units on the substrate are superposed.
In a preferred embodiment, the method 1000 for manufacturing a display panel further includes:
patterning a second light shielding part adjacent to the first light shielding part in the light shielding layer to form a plurality of second light shielding patterns;
forming a plurality of second pixel units above the second shading pattern;
wherein orthographic projections of the second pixel units on the substrate and orthographic projections of the second light shielding patterns on the substrate are overlapped.
The process of the method 1000 for manufacturing the display panel will be described in detail below with reference to fig. 9 to 14.
The base substrate shown in fig. 9 to 14 is, for example, a flexible polyimide transparent substrate, which is a two-layer structure including a lower polyimide film 1200 and an upper polyimide film 1600.
Firstly, providing a support substrate 1100, and forming a lower polyimide film 1200 on the surface of one side of the support substrate 1100 in a coating and curing manner;
secondly, forming a first barrier layer 1300 above the lower polyimide film layer 1200, wherein the first barrier layer 1300 is a transparent film layer having high water and oxygen barrier capability, and is used for preventing water and oxygen in the air from permeating into the display panel to decompose the OLED material in the OLED layer, so as to reduce the service life of the display panel;
next, an amorphous silicon light-shielding layer 1400 is formed over the first barrier layer 1300, and the amorphous silicon light-shielding layer 1400 is deposited on the first barrier layer 1300 by, for example, Physical Vapor Deposition (PVD), Chemical Vapor Deposition (CVD), Plasma Enhanced Chemical Vapor Deposition (PECVD), or the like;
then, a photoresist, for example, a negative Photoresist (PR) 1500 is coated on the amorphous silicon light shielding layer 1400, and the negative photoresist 1500 and a first region 1501 corresponding to the first display region of the display panel are patterned, such that a plurality of first photolithography patterns 1502 are formed on the first region 1501 of the negative photoresist;
continuing, with the plurality of first lithography patterns 1502 as masks, projecting the first lithography patterns 1502 onto the first light shielding portion 1401 of the amorphous silicon light shielding layer 1400, and obtaining a plurality of first light shielding patterns 1402 in the first light shielding portion 1401 by using a dry etching process;
then, an upper polyimide film 1600 is formed above the patterned amorphous silicon shading layer 1400 in a coating and curing manner;
then, a second barrier layer 1700 is formed over the upper polyimide film 1600;
finally, a buffer layer, a TFT-array layer of the plurality of first pixel units and a plurality of second pixel units, an OLED layer, and an encapsulation layer are sequentially formed above the second barrier layer 1700.
In this embodiment, flexible polyimide transparent substrate adopts bilayer structure, and bilayer structure includes upper polyimide film 1600 and lower floor's polyimide film 1200, and the intermediate level of upper polyimide film 1600 and lower floor's polyimide film 1200 folds amorphous silicon light shield layer 1400, and amorphous silicon light shield layer 1400 can improve the stability of buckling many times of flexible polyimide transparent substrate to the problem of stress mismatch between flexible substrate and the thin film transistor device layer has been avoided.
In addition, since the first light shielding portion 1401 of the amorphous silicon light shielding layer 1400 is patterned to form the plurality of first light shielding patterns 1402, and the orthographic projection of the plurality of first light shielding patterns 1402 on the flexible polyimide transparent substrate coincides with the orthographic projection of the plurality of first pixel units in the first display region of the display panel on the flexible polyimide transparent substrate. On one hand, the patterned first light-shielding portion 1401 can effectively improve the light transmittance of a plurality of light-transmitting areas in the first display area, so that the imaging of a camera therein is facilitated; on the other hand, diffraction in the light transmission process can be effectively avoided to a plurality of first shading patterns 1402, the light diffraction degree in the light-transmitting area is reduced, and the improvement of the imaging quality of the camera in the first display area is facilitated.
In this embodiment, the first region 1501 of the negative photoresist 1500 is patterned, such that a plurality of first lithographic patterns 1502 are formed on the first region 1501, for example, by irradiating the first region 1501 with a laser marker of a yellow light process, to directly form a plurality of first lithographic patterns 1502; alternatively, a mask (not shown) is disposed over the negative photoresist 1500, and a plurality of first photolithography patterns 1502 are formed in the first region 1501 by exposure and development.
The amorphous silicon light-shielding layer 1400 further includes a second light-shielding portion 1403 adjacent to the first light-shielding portion 1401; the negative photoresist 1500 further includes a second region 1503 adjacent to the first region 1501; first, the second region 1503 is patterned to obtain a plurality of second lithographic patterns (not shown); next, a plurality of second light-shielding patterns are obtained in the second light-shielding portion 1403 by a dry etching process using the plurality of second photolithography patterns as a mask and projecting the plurality of second photolithography patterns onto the second light-shielding portion 1403.
In addition, the second region 1503 of the negative photoresist 1500 is patterned in the same manner as the first region 1501 of the negative photoresist 1500 described above; the second light shielding portion 1403 is patterned in the same manner as the first light shielding portion 1401 is patterned.
In the embodiment, the plurality of first pixel units in the first display area of the display panel are formed above the plurality of first shading patterns, so that light diffraction of the first display area can be effectively overcome, and the imaging quality of the camera is improved; and a plurality of second pixel units in a second display area of the display panel are formed above a plurality of second shading patterns, so that the problem that external light enters the second display area from the flexible polyimide transparent substrate can be effectively solved, and the display quality of the second display area is improved.
In other embodiments of the present invention, the amorphous silicon light-shielding layer further includes a third light-shielding portion adjacent to the second light-shielding portion, the third light-shielding portion including a plurality of openings therein; the negative photoresist further includes a third region adjacent to the second region; the third area is patterned to form a plurality of other openings, and the third shading part is etched to form a plurality of openings through the openings in the third area. Preferably, the plurality of openings of the amorphous silicon light shielding layer reuse the under-screen fingerprint sensor setting area, the plurality of openings increase the light transmittance at the position, and the imaging quality of the under-screen fingerprint identification optical sensor is improved.
In addition, the process of forming the plurality of first light-shielding patterns 1402 and the plurality of second light-shielding patterns by the amorphous silicon light-shielding layer 1400 is described above by taking the example that the amorphous silicon light-shielding layer 1400 is disposed in the middle of the flexible polyimide transparent substrate having the double-layer structure as an example, but not limited thereto. In other embodiments of the present invention, the amorphous silicon light-shielding layer may also be disposed on the upper surface or the lower surface of the flexible transparent substrate, wherein similar multiple first light-shielding patterns and multiple second light-shielding patterns may also be formed by using the patterning process similar to the above.
The amorphous silicon shading layer is arranged on the first surface or the second surface opposite to the flexible transparent substrate, and the amorphous silicon shading layer can be in direct contact with or not in direct contact with the first surface or the second surface of the flexible transparent substrate. When the amorphous silicon light shading layer does not directly contact the first surface or the second surface of the flexible transparent substrate, film layers such as a blocking layer and a buffer layer are arranged between the amorphous silicon light shading layer and the first surface or the second surface of the flexible transparent substrate.
In summary, the present invention provides a display panel and a manufacturing method thereof, in which the display panel includes a first display region for transparent display, a substrate and a light-shielding layer, and an orthographic projection of a plurality of first light-shielding patterns in the first light-shielding portion of the light-shielding layer on the substrate is overlapped with an orthographic projection of a plurality of first pixel units in the first display region on the substrate, so as to effectively avoid diffraction in a light transmission process, reduce a light diffraction degree in a light-transmitting region, and improve an imaging quality of a sensor in the first display region.
In addition, the display panel further includes a second display region adjacent to the first display region; the light-shielding layer further comprises a second light-shielding part adjacent to the first light-shielding part; the second shading part is used for preventing external light from entering the plurality of second pixel units of the second display area from the substrate, and the display quality of the second display area is improved.
Using the novel paradigm. Furthermore, the technical features mentioned in the different embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other. It is to be noted that the present invention may take various other embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A display panel is characterized in that the display panel is provided with a first display area and a second display area adjacent to the first display area, the light transmittance of the first display area is larger than that of the second display area, the first display area comprises a plurality of light-transmitting areas and a plurality of first pixel unit arrangement areas, and the plurality of first pixel unit arrangement areas comprise a plurality of first pixel units;
the display panel includes:
a substrate base plate;
the light shielding layer comprises a first light shielding part, the first light shielding part is arranged on one side, close to the substrate, of the first pixel units, the first light shielding part comprises a plurality of first light shielding patterns, and orthographic projections of the first light shielding patterns on the substrate are overlapped with orthographic projections of the first pixel units on the substrate.
2. The display panel according to claim 1, wherein the light shielding layer further comprises a second light shielding portion adjacent to the first light shielding portion; the second display area comprises a plurality of second pixel unit arrangement areas, the plurality of second pixel unit arrangement areas comprise a plurality of second pixel units, the plurality of second pixel units are positioned on one side of the substrate, and the arrangement density of the plurality of second pixel units in the second display area is greater than that of the plurality of first pixel units in the first display area; the second shading parts are arranged on one sides of the second pixel units close to the substrate, and orthographic projections of the second shading parts on the substrate are overlapped with the second display areas.
3. The display panel according to claim 2, wherein the second light shielding portion includes a plurality of second light shielding patterns; orthographic projections of the second light shielding patterns on the substrate coincide with orthographic projections of the second pixel units on the substrate.
4. The display panel according to claim 2, further comprising a third display region adjacent to the second display region, the third display region comprising a plurality of light-transmitting regions; the light-shielding layer further comprises a third light-shielding portion adjacent to the second light-shielding portion, the third light-shielding portion comprising a plurality of openings; wherein, the orthographic projection of the plurality of openings on the substrate base plate and the orthographic projection of the plurality of light-transmitting areas on the substrate base plate are superposed.
5. The display panel according to claim 1, wherein the substrate is a flexible transparent substrate, the flexible transparent substrate includes a first surface and a second surface opposite to each other, and the light shielding layer covers the first surface or the second surface; or
The substrate base plate is a flexible transparent base plate with a multilayer structure, the flexible transparent base plate with the multilayer structure comprises an upper layer base plate and a lower layer base plate which are arranged in a stacked mode, and the light shielding layer is clamped between the upper layer base plate and the lower layer base plate.
6. The display panel according to claim 1, wherein the light shielding layer is a combination of one or more of a metal light shielding layer, an amorphous silicon light shielding layer, and an organic resin light shielding layer.
7. A manufacturing method of a display panel is characterized by comprising the following steps:
providing a substrate base plate;
forming a light shielding layer on at least one side surface of the substrate base plate or in the substrate base plate;
patterning the first shading part of the shading layer to form a plurality of first shading patterns; and
forming a plurality of first pixel units above the plurality of first shading patterns;
wherein orthographic projections of the first light shielding patterns on the substrate coincide with orthographic projections of the first pixel units in the first display area of the display panel on the substrate.
8. The method for manufacturing a display panel according to claim 7, further comprising:
patterning the second light shielding part of the light shielding layer to form a plurality of second light shielding patterns;
the second light-shielding area is adjacent to the first light-shielding area, orthographic projections of the second light-shielding patterns on the substrate are overlapped with orthographic projections of the second pixel units in the second display area of the display panel on the substrate, and the second display area is adjacent to the first display area.
9. The method for manufacturing a display panel according to claim 7, wherein the step of patterning the first light-shielding portion of the light-shielding layer to form a plurality of first light-shielding patterns further comprises:
coating photoresist on the shading layer;
patterning the first region of the photoresist to form a plurality of first lithographic patterns; and
and etching the first shading part of the shading layer by taking the plurality of first photoetching patterns as a mask to form a plurality of first shading patterns.
10. The method for manufacturing a display panel according to claim 7, wherein the light-shielding layer is an amorphous silicon light-shielding layer, and the substrate is a flexible polyimide transparent substrate; the manufacturing method of the display panel further comprises the following steps:
depositing the amorphous silicon shading layer on the first surface or the second surface opposite to the flexible polyimide transparent substrate; alternatively, the first and second electrodes may be,
the flexible polyimide transparent substrate comprises an upper polyimide film and a lower polyimide film which are stacked, and the amorphous silicon shading layer is deposited between the upper polyimide film and the lower polyimide film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110855684.3A CN113594210A (en) | 2021-07-28 | 2021-07-28 | Display panel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110855684.3A CN113594210A (en) | 2021-07-28 | 2021-07-28 | Display panel and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113594210A true CN113594210A (en) | 2021-11-02 |
Family
ID=78251326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110855684.3A Pending CN113594210A (en) | 2021-07-28 | 2021-07-28 | Display panel and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113594210A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023098306A1 (en) * | 2021-11-30 | 2023-06-08 | 华为技术有限公司 | Electronic device |
| WO2023108705A1 (en) * | 2021-12-14 | 2023-06-22 | 武汉华星光电半导体显示技术有限公司 | Display panel and display apparatus |
| WO2023142155A1 (en) * | 2022-01-25 | 2023-08-03 | 武汉华星光电半导体显示技术有限公司 | Display panel and display apparatus |
| WO2023236364A1 (en) * | 2022-06-10 | 2023-12-14 | 昆山国显光电有限公司 | Display panel, preparation method for display panel, and display apparatus |
-
2021
- 2021-07-28 CN CN202110855684.3A patent/CN113594210A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023098306A1 (en) * | 2021-11-30 | 2023-06-08 | 华为技术有限公司 | Electronic device |
| WO2023108705A1 (en) * | 2021-12-14 | 2023-06-22 | 武汉华星光电半导体显示技术有限公司 | Display panel and display apparatus |
| WO2023142155A1 (en) * | 2022-01-25 | 2023-08-03 | 武汉华星光电半导体显示技术有限公司 | Display panel and display apparatus |
| WO2023236364A1 (en) * | 2022-06-10 | 2023-12-14 | 昆山国显光电有限公司 | Display panel, preparation method for display panel, and display apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113594210A (en) | Display panel and manufacturing method thereof | |
| US11721122B2 (en) | Display panel, manufacturing method thereof, and display apparatus | |
| CN110034152B (en) | Display panel, manufacturing method thereof and display device | |
| WO2018153065A1 (en) | Display apparatus | |
| CN107731888B (en) | Flexible display panel, manufacturing method thereof and display device | |
| CN108596096B (en) | Fingerprint identification device, display panel, manufacturing method of display panel and display device | |
| WO2022198753A1 (en) | Display panel and display apparatus | |
| WO2022179199A1 (en) | Display panel and manufacturing method therefor, and display device | |
| CN214847489U (en) | Display panel and display device | |
| WO2022052686A1 (en) | Display panel, manufacturing method therefor, and display device | |
| CN216648312U (en) | Display panel and display device | |
| CN112616321B (en) | Display substrate, manufacturing method thereof and display device | |
| CN113327941B (en) | Array substrate, display panel and preparation method of array substrate | |
| WO2022179178A1 (en) | Display substrate and preparation method therefor, and display device | |
| CN114400239B (en) | Display panel, display device and preparation method of display panel | |
| WO2020140343A1 (en) | Display panel and intelligent terminal | |
| WO2020133801A1 (en) | Display panel and smart terminal | |
| US11011588B2 (en) | Display device | |
| CN112987978B (en) | Touch display panel and display device | |
| CN111652196B (en) | Display panel and display device | |
| US11751461B2 (en) | Display motherboard, fabricating method and aligning method of display motherboard | |
| CN112670302B (en) | Array substrate, manufacturing method thereof, display panel and display device | |
| CN211207024U (en) | Array substrate, display panel and display device | |
| JP2011123111A (en) | Method for forming color filter and method for producing solid-state image pickup apparatus by using the same | |
| CN113675249A (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |