CN110047890B - Flexible display panel and flexible display device - Google Patents
Flexible display panel and flexible display device Download PDFInfo
- Publication number
- CN110047890B CN110047890B CN201910311819.2A CN201910311819A CN110047890B CN 110047890 B CN110047890 B CN 110047890B CN 201910311819 A CN201910311819 A CN 201910311819A CN 110047890 B CN110047890 B CN 110047890B
- Authority
- CN
- China
- Prior art keywords
- light
- display panel
- flexible display
- layer
- filter
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
-
- 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
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
Abstract
The invention provides a flexible display panel and a flexible display device, wherein the flexible display panel comprises a substrate and a pixel limiting layer arranged on the substrate, the pixel limiting layer is provided with a plurality of openings, and a light-emitting unit emitting light with preset color is arranged in each opening; filter layers are arranged on the pixel limiting layer and one sides of the light-emitting units, which are far away from the substrate, and each filter layer comprises a plurality of optical filters, and the color of light allowed to penetrate through the optical filters is the same as the light-emitting color of the corresponding light-emitting unit; the side of the filter layer facing away from and/or toward the substrate is provided with a light absorbing layer corresponding to an area of the pixel defining layer where the opening is not provided. The invention can weaken the reflection of the ambient light on the surface of the flexible display panel, enhance the display effect and simultaneously do not influence the bendable and foldable performance of the flexible display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a flexible display panel and a flexible display device.
Background
With the rapid development of electronic technology, people have gradually increased demands on the folding performance of electronic devices such as mobile phones and computers. Among them, flexible Organic Light-Emitting diodes (OLEDs) are widely used in flexible display devices such as terminal devices and wearable devices because of their excellent properties such as low power consumption, high color saturation, wide viewing angle, thin thickness, and flexibility.
When the current display panel is used, ambient light can be reflected on the surface or the inner film layer of the display panel, and reflected light and light emitted by the display panel enter the sight of a user at the same time, so that the contrast of the display panel is reduced, and the display effect is influenced. In order to solve the problem, a polarizer is attached to the light-emitting surface of the current display panel, and the polarizer absorbs or loses the ambient light entering the display panel and the ambient light reflected from the display panel, so that the influence of the ambient light on the self-luminescence of the display panel is reduced, and the display effect of the display panel is improved.
However, since the polarizer has a relatively high thickness and a relatively low light transmittance, the polarizer is attached to the display panel, which not only increases the overall thickness of the display panel, resulting in a reduction in the flexibility of the display panel, but also reduces the brightness of the light emitted from the display panel, thereby affecting the display effect.
Disclosure of Invention
To solve at least one of the problems mentioned in the background, the present invention provides a flexible display panel and a flexible display apparatus, which can reduce the reflection of ambient light on the surface of the flexible display panel and enhance the display effect, without affecting the bending and folding performance of the flexible display panel.
In order to achieve the above object, in a first aspect, the present invention provides a flexible display panel, which includes a substrate and a pixel defining layer disposed on the substrate, wherein the pixel defining layer has a plurality of openings, and each of the openings has a light emitting unit for emitting light of a predetermined color.
The pixel limiting layer and one side of the light-emitting unit, which is far away from the substrate, are provided with filter layers, each filter layer comprises a plurality of optical filters, and the color of light transmitted by each optical filter is the same as the light-emitting color of the corresponding light-emitting unit.
The side of the filter layer facing away from and/or toward the substrate is provided with a light absorbing layer corresponding to an area of the pixel defining layer where the opening is not provided.
According to the flexible display panel provided by the invention, the filter layers are arranged on the pixel limiting layer and one side of the light-emitting unit, which is far away from the substrate, the color of light allowed to pass through the filter in the filter layers is the same as the light-emitting color of the corresponding light-emitting unit, and the color of ambient light entering the interior of the display panel is filtered by the filter, so that the intensity of the ambient light is weakened, and the reflection of the ambient light in the interior of the flexible display panel is reduced. Through setting up the light-absorbing layer in one side that the filter layer is carried on the back and/or is towards the substrate base plate, utilize the light-absorbing layer to absorb the ambient light who shines at flexible display panel surface and flexible display panel internal reflection play to improve the luminous contrast with the ambient light of flexible display panel surface self, strengthen flexible display panel's display effect, do not influence flexible and folding performance of flexible display panel simultaneously.
In the above flexible display panel, optionally, a plurality of light absorbing holes are provided in the light absorbing layer, and at least part of the light absorbing holes are communicated with the outside of the light absorbing layer.
Through set up a plurality of extinction pore ways in the light-absorbing layer, partial extinction passageway and the outside intercommunication on light-absorbing layer utilize the extinction passageway can consume the energy of ambient light to reach the purpose of extinction, reduce the ambient light that gets into the inside of flexible display panel, and weaken the reflection intensity of ambient light on flexible display panel surface.
In the flexible display panel, the light absorbing layer may be one or more of an organic/inorganic hybrid nanomaterial layer, a graphene layer, and a quantum dot material layer.
In the flexible display panel, optionally, the filter layer further includes a black matrix, a plurality of filter openings are formed in the black matrix, and one filter is disposed in each filter opening;
the black matrix corresponds to an area of the pixel defining layer where the opening is not provided, and the light absorbing layer is located on a side of the black matrix opposite to and/or facing the substrate base plate.
Through set up the black matrix in the filter layer, utilize the isolated light intermixing of adjacent luminescence unit of black matrix, improve the purity of the light colour that flexible display panel sent, utilize the black matrix to absorb the ambient light who shines on flexible display panel simultaneously, reduce the ambient light that gets into flexible display panel inside to weaken the reflection intensity of ambient light.
In the flexible display panel described above, it is optional that there is an overlapping region between adjacent filters, and the overlapping region corresponds to a region of the pixel defining layer where no opening is provided.
By arranging adjacent filters in the filter layer to overlap each other, the intensity of ambient light entering the interior of the flexible display panel can be reduced by the overlapping area, thereby reducing the reflection intensity thereof.
In the flexible display panel described above, an elastic spacer is optionally provided between the region of the pixel defining layer where the opening is not provided and the filter layer.
By arranging the elastic isolation member between the area, not provided with the opening, of the pixel limiting layer and the filter layer, the variability characteristic of the elastic isolation member is utilized, the interlayer stress generated between the pixel limiting layer and the filter layer when the flexible display panel is bent is effectively relieved, the problem of in-layer fracture or interlayer peeling is avoided, and the flexibility of the flexible display panel is improved.
In the flexible display panel, the elastic spacer is optionally a light absorbing member, and the surface of the light absorbing member is uneven.
By arranging the elastic isolation member as the light absorption member and making the surface uneven, the elastic isolation member can absorb the ambient light entering the flexible display panel, and the intensity of the ambient light reflected on the surface of the elastic isolation member is reduced.
In the flexible display panel described above, the elastic spacer is optionally one or more of an arc-shaped member, a zigzag-shaped member, and a trapezoid.
In the above flexible display panel, the light absorbing layer may optionally have a thickness of 10 to 300 nm.
In a second aspect, the present invention provides a flexible display device, including the flexible display panel.
According to the flexible display device provided by the invention, the filter layers are arranged on the pixel limiting layer of the flexible display panel and one sides of the light-emitting units, which are far away from the substrate, the color of light allowed to pass through the filter layers in the filter layers is the same as the light-emitting color of the corresponding light-emitting units, and the color of ambient light entering the display panel is filtered by the filter layers, so that the intensity of the ambient light is weakened, and the reflection of the ambient light in the flexible display panel is reduced. Through setting up the light-absorbing layer in one side that the filter layer is carried on the back and/or is towards substrate base plate, utilize the light-absorbing layer to absorb the ambient light who shines at flexible display panel surface and flexible display panel internal reflection play to improve the luminous contrast with the ambient light of flexible display panel surface self, strengthen flexible display panel and flexible display device's display effect, do not influence flexible and folding performance of flexible display panel simultaneously.
The construction of the present invention and other objects and advantages thereof will be more apparent from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible display panel according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a light absorbing layer of a flexible display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a flexible display panel according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of an adjacent filter of a flexible display panel according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a flexible display panel according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a spacer of a flexible display panel according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of another spacer of a flexible display panel according to a third embodiment of the present invention;
fig. 8 is a schematic structural diagram of another spacer of a flexible display panel according to a third embodiment of the present invention.
Description of reference numerals:
10-a substrate base plate;
20-a thin-film transistor layer;
30-a pixel defining layer;
40-a light emitting unit;
41-red pixels;
42-green pixels;
43-blue pixels;
50-a filter layer;
51-red filter;
52-green filter;
53-blue filters;
54-black matrix;
60-a light absorbing layer;
61-light absorbing pore path;
70-elastomeric isolator;
80-overlapping area.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the embodiments of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection via an intermediary, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example one
Fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of a light absorbing layer of a flexible display panel according to an embodiment of the present invention.
The inventor of the present invention finds, in a practical research process, that when the intensity of ambient light is high in a use process of a current flexible display panel, the ambient light is reflected on the surface of the display panel or reflected after entering the interior of the display panel, and light emitted by the display panel and ambient reflected light enter a visual field of a user at the same time, so that the contrast of the display panel is low, and the display effect is seriously affected. At present, a mode of arranging a polaroid on a light-emitting surface of a display panel utilizes the filtering characteristic of the polaroid, although the reflection of ambient light on the display panel can be weakened to a certain extent, the thickness of the polaroid is larger, so that the flexibility of the display panel provided with the polaroid is reduced, and the requirements of bending and folding cannot be met.
Based on the above findings and the existing technical problems, the embodiments of the present invention provide the following solutions: referring to fig. 1 and 2, an embodiment of the present invention provides a flexible display panel, which includes a substrate 10 and a pixel defining layer 30 disposed on the substrate 10, wherein the pixel defining layer 30 has a plurality of openings, and each of the openings has a light emitting unit 40 for emitting light of a predetermined color.
The pixel defining layer 30 and the side of the light emitting unit 40 facing away from the substrate 10 are both provided with a filter layer 50, and the filter layer 50 includes a plurality of filters, and the color of the filter allows the light to pass through is the same as the light emitting color of the corresponding light emitting unit.
A side of the filter layer 50 facing away from and/or toward the base substrate 10 is provided with a light absorbing layer 60, and the light absorbing layer 60 corresponds to a region of the pixel defining layer 30 where no opening is provided.
It should be noted that the flexible display panel provided in this embodiment may include a substrate 10 and a Thin Film Transistor layer 20 (TFT). Wherein the active layer material of the TFT may be Low Temperature Polysilicon (LTPS), Oxide (Oxide) such as Indium Gallium Zinc Oxide (IGZO); the TFTs in thin-film-transistor layer 20 may be LTPS-type TFTs, Oxide-type TFTs, or both types of TFTs. The substrate 10 may be a glass substrate, such as Indium Tin Oxide (ITO) glass, or an elastic plastic substrate, such as Polyimide (PI), or a thermoplastic elastomer (SEBS), and is used to provide a structural foundation for the subsequent functional layers of the display panel. The thin film transistor layer 20 may include an active layer, a gate electrode, a gate insulating layer, and source/drain electrodes for driving the light emitting unit 40 of the flexible display panel to emit light. An anode (not shown) and a pixel defining layer 30 are disposed on the thin-film transistor layer 20, a plurality of openings are disposed on the pixel defining layer 30, a light emitting unit 40 is disposed in each opening, a cathode (not shown) is disposed on the light emitting unit 40, and an electric field is formed between the cathode and the anode to drive electrons and holes to move and couple in the light emitting unit 40, so as to emit visible light through radiation relaxation. Wherein the light emitting unit 40 may sequentially include a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer (not shown in the above structural diagram) from the anode toward the cathode.
The light emitting unit 40 disposed in the opening of each pixel defining layer 30 may include pixels emitting light of different colors, as shown in fig. 1, the light emitting unit 40 in this embodiment includes a red pixel 41, a green pixel 42, and a blue pixel 43, in practical use, the light emitting unit 40 may further include pixels of other colors according to practical situations, and the color of the light emitting unit 40 emitting light is not limited in this embodiment. The pixel defining layer 30 can prevent the light of different colors emitted from the adjacent light emitting units 40 from mixing.
Further, a filter layer 50 is disposed on both the pixel defining layer 30 and the side of the light emitting unit 40 away from the substrate 10, where the filter layer 50 may include a plurality of filters, and different filters may allow light of different colors to pass through, and the filters disposed in this embodiment include a red filter 51, a green filter 52, and a blue filter 53, which correspond to the color of the pixel of the light emitting unit 40, and in actual use, the color of the filter may be set to other colors according to actual situations, which is not limited in this embodiment as long as it is ensured that the color corresponds to the color of the pixel of the light emitting unit 40.
It should be particularly noted that the color of the light transmitted through the optical filter provided in this embodiment is the same as the light emitting color of the corresponding light emitting unit, and such an arrangement can ensure that, when the ambient light irradiates the surface of the flexible display panel, the light with the same color as the optical filter can enter the interior of the flexible display panel through the optical filter, and after the color of the light is filtered out, the intensity of the light is inevitably reduced, so that the intensity of the ambient light entering the interior of the flexible display panel can be reduced by using the optical filter. Furthermore, when the light reflected inside the flexible display panel exits the flexible display panel, the light passes through the optical filter again, and the intensity of the light is weakened again, so that the intensity of the ambient light reflected out of the flexible display panel can be weakened by the optical filter, the contrast between the self luminescence of the flexible display panel and the ambient light is improved, and the display effect of the flexible display panel is enhanced.
Meanwhile, the color of the light allowed to penetrate through the optical filter is the same as the light emitting color of the corresponding light emitting unit, so that the optical filter does not influence the light emitted by the flexible display panel, and the display effect of the flexible display panel is ensured.
Specifically, in order to further reduce the reflection intensity of ambient light on the flexible display panel, a side of the filter layer 50 facing away from and/or toward the base substrate 10 is provided with a light absorbing layer 60, and the light absorbing layer 60 corresponds to a region of the pixel defining layer 30 where no opening is provided. The light absorbing layer 60 can reduce the reflection intensity of the ambient light in the region where the pixel defining layer 30 is not provided with the opening. The light absorbing layer 60 may be made of a light absorbing material, for example, a metal material, such as a composite material of one or more of molybdenum, aluminum, and titanium, or a Black resin material similar to a Black Matrix (Black Matrix).
In order to further improve the light absorption effect, the present embodiment provides a plurality of light absorption holes 61 in the light absorption layer 60, and at least a part of the light absorption holes 61 are communicated with the outside of the light absorption layer 60.
It should be noted that, referring to fig. 1 and fig. 2, a plurality of light absorbing pore channels 61 are disposed in the light absorbing layer 60, the light absorbing channels may or may not be communicated with each other, at least a part of the light absorbing pore channels 61 are communicated with the outside of the light absorbing layer 60, and thus the formed light absorbing pore channels 61 are blind pores or through pores. When the ambient light irradiates on the light absorbing layer 60, the light of the ambient light enters the light absorbing hole 61 and is reflected for multiple times inside the light absorbing hole 61, so that the energy of the ambient light is consumed in the reflection process to achieve the purpose of light absorption. Fig. 2 shows the reflection process of ambient light rays in the light absorbing tunnel 61.
Wherein, the inner wall of the light absorbing pore 61 can be further provided with a light absorbing coating, such as a black resin coating, to improve the light absorbing effect of the light absorbing pore 61.
The light absorbing layer 60 of the present embodiment may be made of a porous material based on that the light absorbing layer 60 includes a plurality of light absorbing pores 61, for example, the light absorbing layer 60 may be one or more of an organic/inorganic hybrid nanomaterial layer, a graphene layer, and a quantum dot material layer.
As an achievable embodiment, the light absorbing layer 60 has a thickness of 10-300 nm. The light absorbing layer 60 has an excessively large thickness, which increases the thickness of the entire flexible display panel and is not advantageous for folding and warping of the flexible display panel. When the thickness of the light absorbing layer 60 is too small, the light absorbing effect of the light absorbing layer 60 is affected. As a preferred embodiment, the light absorbing layer 60 may have a thickness of 10 to 150 nm. In practical applications, the user can select the specific thickness value of the light absorbing layer 60 within the above range according to needs, and the specific thickness value of the light absorbing layer 60 is not limited in this embodiment.
As an implementation, the light absorbing layer 60 may be disposed in the flexible display panel by bonding, for example, a transparent optical adhesive layer may be disposed on a side of the filter layer 50 opposite and/or facing the substrate 10, and the light absorbing layer 60 is fixed in the optical adhesive layer, and the optical adhesive layer may not only serve to fix the light absorbing layer 60, but also provide protection for the light absorbing layer 60.
Further, due to the plurality of light absorbing pores 61 in the light absorbing layer 60, a stress releasing function can be performed, when the flexible display panel is folded or bent, a stress generated between the structural layers on both sides of the light absorbing layer 60, such as the pixel defining layer 30 and the filter layer 50, or the filter layer 50 and the encapsulation layer (not shown in the figure), is transferred to the light absorbing layer 60, the plurality of light absorbing pores 61 in the light absorbing layer 60 form a mesh structure, and the stress is transferred on the mesh lines of the mesh structure, so that the stress is uniformly distributed in the light absorbing layer 60, the stress is prevented from being concentrated in the pixel defining layer 30, the filter layer 50 or the encapsulation layer, the problems of intra-layer fracture and inter-layer peeling of the structural layers are avoided, and the structural stability of the flexible display panel is improved.
Further, the filter layer 50 may further include a black matrix 54, where a plurality of filter openings are formed in the black matrix 54, and each filter opening has a filter therein.
The black matrix 54 corresponds to a region of the pixel defining layer 30 where no opening is provided, and the light absorbing layer 60 is located at a side of the black matrix 54 facing away from and/or toward the base substrate 10.
It should be noted that, as described with reference to fig. 1, a black matrix 54 may be disposed between adjacent filters, and the black matrix 54 is used to isolate the light of adjacent light-emitting units 40 from mixing with each other, so as to improve the purity of the light color emitted by the flexible display panel. The black matrix 54 has a certain light absorption effect, and the black matrix 54 absorbs ambient light irradiated on the flexible display panel, so that the ambient light entering the flexible display panel can be reduced, and the reflection intensity of the ambient light can be reduced.
In the flexible display panel provided by the first embodiment of the present invention, the filter layer is disposed on the pixel defining layer and one side of the light emitting unit away from the substrate, a color of light allowed to pass through the filter layer in the filter layer is the same as a light emitting color of the corresponding light emitting unit, and a color of ambient light entering the display panel is filtered by the filter layer, so that an intensity of the ambient light is reduced, and reflection of the ambient light in the flexible display panel is reduced. Through setting up the light-absorbing layer in one side that the filter layer is carried on the back and/or is towards the substrate base plate, utilize the light-absorbing layer to absorb the ambient light who shines at flexible display panel surface and flexible display panel internal reflection play to improve the luminous contrast with the ambient light of flexible display panel surface self, strengthen flexible display panel's display effect, do not influence flexible and folding performance of flexible display panel simultaneously.
Example two
Fig. 3 is a schematic structural diagram of a flexible display panel according to a second embodiment of the present invention. Fig. 4 is a schematic structural diagram of an adjacent filter of a flexible display panel according to a second embodiment of the present invention.
Referring to fig. 3 and 4, on the basis of the first embodiment, a second embodiment of the present invention further provides a flexible display panel with another structure, and compared with the first embodiment, the second embodiment of the present invention is different from the first embodiment of the present invention in that: the structure of filter layer 50 is different.
Specifically, the adjacent filters have an overlapping region 80 therebetween, and the overlapping region 80 corresponds to a region of the pixel defining layer 30 where no opening is provided.
Note that, the sidewalls of adjacent filters are engaged with each other, that is, as shown in fig. 4, the sidewalls of adjacent filters may be respectively provided with a one-to-one corresponding groove and protrusion, and the grooves and the protrusions are engaged with each other, so that the adjacent filters have an overlapping region 80 in a direction perpendicular to the substrate 10.
As an implementation manner, the optical filter of the present embodiment may be manufactured by coating and etching, that is, during the manufacturing process, the optical filter capable of transmitting light of different colors is first manufactured by coating, and mutually engaged structures are formed at the positions of adjacent optical filters by using a chemical etching or photo etching manner, so as to form the overlapping region 80. The overlapping region 80 is provided between adjacent filters to improve the connection strength of the adjacent filters, thereby ensuring the structural stability of the filter layer 50. And this overlap area 80 can also play the role of weakening the reflection of ambient light, take fig. 4 as an example, it shows that it is the overlap area 80 between red filter 51 and green filter 52, when ambient light shines on overlap area 80, overlap area 80 carries out the color filtering to ambient light simultaneously, only weak red light and green light can get into inside the flexible display panel, thus weaken the intensity of the ambient light that gets into inside the flexible display panel. Furthermore, when the light reflected inside the flexible display panel exits the flexible display panel, the light passes through the optical filter again, and the intensity of the light is weakened again, so that the intensity of the ambient light reflected out of the flexible display panel can be weakened by the optical filter, the contrast between the self luminescence of the flexible display panel and the ambient light is improved, and the display effect of the flexible display panel is enhanced.
Based on the overlapping region 80 corresponding to the region of the pixel defining layer 30 where no opening is disposed, there is no light emitted from the light emitting unit 40, so that the overlapping region 80 does not affect the normal light emission of the flexible display panel, and the display effect of the flexible display panel is ensured.
Fig. 4 of the present embodiment shows the overlapping region 80 between the red filter 51 and the green filter 52, and in practical use, the overlapping region 80 is also applicable to the overlapping regions 80 of adjacent filters of the remaining colors, and the present embodiment is not limited to this illustration.
Other technical features are the same as those of the first embodiment and can achieve the same technical effects, and are not described in detail herein.
In the flexible display panel provided by the second embodiment of the present invention, the filter layer is disposed on the pixel defining layer and one side of the light emitting unit away from the substrate, a color of light allowed to pass through the filter layer in the filter layer is the same as a light emitting color of the corresponding light emitting unit, and a color of ambient light entering the display panel is filtered by the filter layer, so that the intensity of the ambient light is reduced, and reflection of the ambient light in the flexible display panel is reduced. Through setting up the light-absorbing layer in one side that the filter layer is carried on the back and/or is towards the substrate base plate, utilize the light-absorbing layer to absorb the ambient light who shines at flexible display panel surface and flexible display panel internal reflection play to improve the luminous contrast with the ambient light of flexible display panel surface self, strengthen flexible display panel's display effect, do not influence flexible and folding performance of flexible display panel simultaneously.
EXAMPLE III
Fig. 5 is a schematic structural diagram of a flexible display panel according to a third embodiment of the present invention. Fig. 6 is a schematic structural diagram of a spacer of a flexible display panel according to a third embodiment of the present invention. Fig. 7 is a schematic structural diagram of another spacer of a flexible display panel according to a third embodiment of the present invention. Fig. 8 is a schematic structural diagram of another spacer of a flexible display panel according to a third embodiment of the present invention.
Referring to fig. 5 to 8, on the basis of the first embodiment or the second embodiment, a third embodiment of the present invention further provides a flexible display panel with another structure, and compared with the first embodiment and the second embodiment, the third embodiment is different in that: also disposed within the flexible display panel is an elastomeric isolator 70.
Specifically, an elastic spacer 70 is provided between the region of the pixel defining layer 30 where no opening is provided and the filter layer 50.
It should be noted that, the elastic isolation member 70 provided in this embodiment may be made of an elastically deformable metal member, or may be made of a soft organic material. When the flexible display panel is bent or folded, stress is generated between the pixel limiting layer 30 and the filter layer 50 and is transmitted to the elastic isolating member 70, the elastic isolating member 70 absorbs and releases the stress by utilizing the elastic deformation characteristic of the elastic isolating member, the stress is prevented from being accumulated in the pixel limiting layer 30 and the filter layer 50, the problems of in-layer fracture of the structural layer and interlayer peeling are avoided, and the structural stability of the flexible display panel is improved.
As an implementation manner, the elastic spacer 70 is a light-absorbing member, and the elastic spacer 70 is disposed between the area of the pixel defining layer 30 where the opening is not disposed and the filter layer 50, so that the elastic spacer 70 can absorb the light emitted from the light-emitting unit 40 to the elastic spacer 70, and the problem of light mixing of the light-emitting units 40 with different colors can be effectively reduced by using the elastic spacer 70, thereby improving the display effect of the flexible display panel.
Further, the surface of this light-absorbing piece can be unevenness, adopts the extinction material to make promptly, and the surface sets up to unevenness's structure, utilizes elasticity isolator 70's extinction characteristic can absorb the inside ambient light that gets into flexible display panel to utilize the structure of surface unevenness to make ambient light take place diffuse reflection at elasticity isolator 70 surface, thereby weaken the contrast of flexible display panel self luminous and ambient light, strengthen flexible display panel's display effect.
As an achievable embodiment, the elastic separation member 70 is one or more of an arc-shaped member as shown in fig. 6, a sawtooth-shaped member as shown in fig. 7, and a trapezoid-shaped member as shown in fig. 8, and the present embodiment does not limit the specific structure of the elastic separation member 70, and is not limited to the above-mentioned words and drawings.
Other technical features are the same as those of the first embodiment and the second embodiment, and the same technical effects can be achieved, and are not described in detail herein.
In the flexible display panel provided by the third embodiment of the present invention, the filter layer is disposed on the pixel defining layer and one side of the light emitting unit away from the substrate, a color of light allowed to pass through the filter layer in the filter layer is the same as a light emitting color of the corresponding light emitting unit, and a color of ambient light entering the display panel is filtered by the filter layer, so that the intensity of the ambient light is reduced, and reflection of the ambient light in the flexible display panel is reduced. Through setting up the light-absorbing layer in one side that the filter layer is carried on the back and/or is towards the substrate base plate, utilize the light-absorbing layer to absorb the ambient light who shines at flexible display panel surface and flexible display panel internal reflection play to improve the luminous contrast with the ambient light of flexible display panel surface self, strengthen flexible display panel's display effect, do not influence flexible and folding performance of flexible display panel simultaneously.
Example four
On the basis of the first to third embodiments, a fourth embodiment of the invention provides a flexible display device. The flexible display device provided by the embodiment can be any product or component with a display function, such as a television, a digital camera, a mobile phone, a tablet computer, a smart watch, an electronic book, a navigator and the like, which comprises a flexible display panel.
Other technical features are the same as those of the first to the second embodiments, and the same technical effects can be achieved, and are not repeated herein.
In the flexible display device provided by the fourth embodiment of the present invention, the filter layer is disposed on the pixel defining layer of the flexible display panel and on the side of the light-emitting unit away from the substrate, the color of the filter in the filter layer, which allows light to pass through, is the same as the light-emitting color of the corresponding light-emitting unit, and the color of the ambient light entering the display panel is filtered by the filter, so that the intensity of the ambient light is reduced, and the reflection of the ambient light in the flexible display panel is reduced. Through setting up the light-absorbing layer in one side that the filter layer is carried on the back and/or is towards the substrate base plate, utilize the light-absorbing layer to absorb the ambient light who shines at flexible display panel surface and flexible display panel internal reflection play to improve the luminous contrast with the ambient light of flexible display panel surface self, strengthen flexible display panel's display effect, do not influence flexible and folding performance of flexible display panel simultaneously.
In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "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 specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless specifically stated otherwise.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A flexible display panel is characterized by comprising a substrate base plate and a pixel limiting layer arranged on the substrate base plate, wherein the pixel limiting layer is provided with a plurality of openings, and a light-emitting unit emitting light with preset color is arranged in each opening;
the pixel limiting layer and one side of the light-emitting unit, which is far away from the substrate, are provided with filter layers, each filter layer comprises a plurality of optical filters, and the color of light transmitted by each optical filter is the same as the light-emitting color of the corresponding light-emitting unit;
a light absorbing layer is arranged on one side of the filter layer, which faces away from and/or faces the substrate base plate, and corresponds to the area, where the opening is not arranged, of the pixel defining layer;
a plurality of light absorbing pore passages are arranged in the light absorbing layer, and at least part of the light absorbing pore passages are communicated with the outside of the light absorbing layer;
a light absorption coating is arranged on the inner wall of the light absorption pore passage;
the side walls of the adjacent optical filters are in a mutually meshed structure.
2. The flexible display panel of claim 1, wherein the light absorbing layer is one or more of an organic/inorganic hybrid nanomaterial layer, a graphene layer, and a quantum dot material layer.
3. The flexible display panel according to any one of claims 1-2, wherein the filter layer further comprises a black matrix, the black matrix has a plurality of filter openings formed therein, and each filter opening has one of the filters disposed therein;
the black matrix corresponds to an area of the pixel defining layer where the opening is not disposed, and the light absorbing layer is located at a side of the black matrix facing away from and/or toward the substrate base plate.
4. The flexible display panel according to any one of claims 1 to 2, wherein adjacent filters have an overlapping region therebetween, the overlapping region corresponding to a region of the pixel defining layer where the opening is not provided.
5. The flexible display panel of any of claims 1-2, wherein an elastomeric spacer is disposed between an area of the pixel defining layer where the opening is not disposed and the filter layer.
6. The flexible display panel of claim 5, wherein the elastic separator is a light absorber, and wherein a surface of the light absorber is uneven.
7. The flexible display panel of claim 5, wherein the elastomeric spacers are one or more of arcs, serrations, and ladders.
8. The flexible display panel of any of claims 1-2, wherein the light absorbing layer has a thickness of 10-300 nm.
9. A flexible display device comprising the flexible display panel according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311819.2A CN110047890B (en) | 2019-04-18 | 2019-04-18 | Flexible display panel and flexible display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311819.2A CN110047890B (en) | 2019-04-18 | 2019-04-18 | Flexible display panel and flexible display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110047890A CN110047890A (en) | 2019-07-23 |
| CN110047890B true CN110047890B (en) | 2021-04-06 |
Family
ID=67277744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910311819.2A Active CN110047890B (en) | 2019-04-18 | 2019-04-18 | Flexible display panel and flexible display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110047890B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335957A (en) * | 2019-04-26 | 2019-10-15 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN112736109B (en) * | 2019-10-14 | 2022-12-20 | 成都辰显光电有限公司 | Display panel and method for manufacturing display panel |
| CN111048691A (en) * | 2019-12-02 | 2020-04-21 | 云谷（固安）科技有限公司 | Display panel |
| US20220123073A1 (en) * | 2020-05-15 | 2022-04-21 | Hefei Boe Joint Technology Co.,Ltd. | Display Substrate and Preparation Method thereof, and Display Apparatus |
| CN111564481B (en) * | 2020-05-21 | 2023-09-22 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method thereof and display device |
| CN112038369A (en) * | 2020-08-20 | 2020-12-04 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN112635694A (en) * | 2021-01-18 | 2021-04-09 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel |
| CN113327969A (en) * | 2021-06-03 | 2021-08-31 | 京东方科技集团股份有限公司 | Display panel, display device and lighting device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100742371B1 (en) * | 2005-11-29 | 2007-07-24 | 삼성에스디아이 주식회사 | fabrication method of Organic light-emitting device |
| KR101787978B1 (en) * | 2011-04-29 | 2017-10-19 | 엘지디스플레이 주식회사 | Organic light emitting device and manufacturing method thereof |
| CN104078489B (en) * | 2014-06-11 | 2017-02-15 | 京东方科技集团股份有限公司 | Organic light emitting diode display panel and device |
| CN104952905A (en) * | 2015-05-06 | 2015-09-30 | 京东方科技集团股份有限公司 | Organic light-emitting display panel, preparation method thereof and display device |
| KR101765102B1 (en) * | 2015-11-30 | 2017-08-04 | 엘지디스플레이 주식회사 | Organic light emitting display device and method of manufacturing the same |
| JP2017147059A (en) * | 2016-02-15 | 2017-08-24 | セイコーエプソン株式会社 | Electro-optic device and electronic device |
| KR102419770B1 (en) * | 2016-05-20 | 2022-07-13 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | Light-emitting device and electronic device |
| JP6504206B2 (en) * | 2017-06-30 | 2019-04-24 | セイコーエプソン株式会社 | Electro-optical device and electronic device |
| CN108735104B (en) * | 2018-06-01 | 2020-11-03 | 京东方科技集团股份有限公司 | Display panel, display device and method for manufacturing display panel |
| CN109037470A (en) * | 2018-07-16 | 2018-12-18 | 云谷（固安）科技有限公司 | Display screen, display device |
| CN109065754A (en) * | 2018-08-03 | 2018-12-21 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED display panel and preparation method thereof |
-
2019
- 2019-04-18 CN CN201910311819.2A patent/CN110047890B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110047890A (en) | 2019-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110047890B (en) | Flexible display panel and flexible display device | |
| US10504934B2 (en) | Array substrate, method for manufacturing array substrate, and display panel | |
| KR102651386B1 (en) | Light-emitting device, electronic device, and lighting device | |
| JP6877250B2 (en) | Display device | |
| EP2866261B1 (en) | Organic light emitting display device | |
| TWI704443B (en) | Display device | |
| JP2024045217A (en) | Electronics | |
| TWI718462B (en) | Data processing device | |
| US9041280B2 (en) | Double-side light emitting display panel | |
| US10516078B2 (en) | Micro light-emitting diode display panel and display device having a first emitting direction and a second emitting direction | |
| CN109004005B (en) | Display panel, manufacturing method thereof and display device | |
| KR20160046874A (en) | Display device | |
| US11968875B2 (en) | Display panel and display device | |
| US9960211B2 (en) | Pixel element structure, array structure and display device | |
| CN109859644B (en) | Display panel and display module | |
| CN110531549B (en) | Double-sided display panel and display device | |
| TWI642217B (en) | Organic light-emit diode display device | |
| US20220137752A1 (en) | Touch panel and display device | |
| CN111584573B (en) | OLED display panel and preparation method thereof | |
| CN109994535A (en) | A kind of display panel and display device | |
| RU2543995C2 (en) | Device for placing in front of display device | |
| CN209911704U (en) | Display panel and display device | |
| KR100722116B1 (en) | Dual-type organic light emitting display | |
| KR102388933B1 (en) | Organic light emitting diodes display | |
| US20080174721A1 (en) | Liquid crystal panel with color filter substrate having OLED units and liquid crystal display with same |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |