CN117642009A

CN117642009A - Display panel and display device

Info

Publication number: CN117642009A
Application number: CN202311733940.7A
Authority: CN
Inventors: 田雪雁; 王海鹏; 田宏伟
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2023-12-15
Filing date: 2023-12-15
Publication date: 2024-03-01

Abstract

The invention provides a display panel and a display device, wherein the display panel comprises: a back plate; a plurality of organic light emitting devices located at one side of the back plate; the color film layer or the circular polaroid is positioned on one side of the organic light-emitting device, which is far away from the backboard, and the color film layer comprises a black matrix; and the semi-transparent and semi-reflective film is positioned on one side of the color film layer or the circular polarizer, which is far away from the backboard. Therefore, the semi-transparent and semi-reflective film has certain reflectivity and light transmittance, when a picture is not required to be displayed, the display panel can play a role of a mirror, and when the picture is required to be displayed, the color film layer or the circular polaroid can reduce the interference of external environment light, so that the display panel can display the picture better.

Description

Display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to a display panel and a display device.

Background

An OLED (Organic Light Emitting Diode ) display device has many advantages of high contrast, high color gamut, wide field of view, low power consumption, and the like, and is widely used in display devices such as mobile phones, notebooks, IPAD, and the like.

Currently, many application scenes require a display device to have a mirror display function, however, some display panels and display devices at present do not have a mirror display function or have poor mirror display effect, and thus the display device needs to be improved.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent.

In one aspect of the present invention, a display panel is provided. In some embodiments of the present invention, the display panel includes: a back plate; a plurality of organic light emitting devices located at one side of the back plate; the color film layer or the circular polaroid is positioned on one side of the organic light-emitting device, which is far away from the backboard, and the color film layer comprises a black matrix; and the semi-transparent and semi-reflective film is positioned on one side of the color film layer or the circular polarizer, which is far away from the backboard. Therefore, the semi-transparent and semi-reflective film has certain reflectivity and light transmittance, when a picture is not required to be displayed, the display panel can play a role of a mirror, and when the picture is required to be displayed, the color film layer or the circular polaroid can reduce the interference of external environment light, so that the display panel can display the picture better.

In some embodiments of the invention, the semi-permeable semi-reflective membrane comprises: the reflective polarizer comprises a plurality of sub-layers, and the refractive indexes of any two adjacent sub-layers are different; the first linear polarizer is positioned on one side of the reflective polarizer, which is close to the backboard.

In some embodiments of the invention, the first linear polarizer comprises a first support layer, a polarization function layer, and a second support layer, the polarization function layer being located between the first support layer and the second support layer; and/or, the semi-transparent and semi-reflective film further comprises a diffusion bonding layer, wherein the diffusion bonding layer is positioned between the reflective polarizer and the first linear polarizer. Thus, the performance of the semi-transparent and semi-reflective membrane is improved.

In some embodiments of the invention, the semi-permeable semi-reflective membrane satisfies at least one of the following conditions: the thickness of the reflective polarizer is 20-30 mu m; the thickness of the polarization functional layer is 20-30 mu m; the thickness of the first supporting layer is 35-45 mu m; the thickness of the second supporting layer is 35-45 mu m; the diffusion bonding layer has a thickness of 5 μm to 10 μm. The thickness of each membrane layer in the semi-transparent and semi-reflective membrane is in the range, which is beneficial to further improving the performance of the semi-transparent and semi-reflective membrane.

In some embodiments of the present invention, three sub-layers of the reflective polarizer, which are arbitrarily stacked, are denoted as a first sub-layer, a second sub-layer, and a third sub-layer, the second sub-layer is located between the first sub-layer and the third sub-layer, and the refractive index of the second sub-layer is smaller than the refractive index of the first sub-layer and the third sub-layer, or the refractive index of the second sub-layer is larger than the refractive index of the first sub-layer and the third sub-layer. Therefore, the reflective polarizer can reflect a part of light rays in the external environment light and a part of light rays penetrate.

In some embodiments of the invention, the circular polarizer includes a second linear polarizer and a quarter-wave plate. Therefore, the circular polarizer can play a role in reducing the reflection of external environment light.

In some embodiments of the invention, the display panel further includes: the packaging layer is positioned on one side of the organic light-emitting device, which is far away from the backboard; the touch control layer is positioned between the packaging layer and the color film layer or between the packaging layer and the circular polarizer. Therefore, the packaging layer can relieve or even avoid water oxygen in the external environment from corroding the organic light-emitting device, thereby being beneficial to improving the overall performance of the display panel and prolonging the service life of the display panel; the touch layer is arranged at the position, so that a good touch effect can be achieved, and the touch layer is combined with the mirror reflection structure, so that the overall performance of the display panel can be remarkably improved.

In some embodiments of the present invention, the touch layer includes a first metal layer, an insulating layer, and a second metal layer sequentially disposed, the insulating layer having a via hole, the first metal layer and the second metal layer being in contact at the via hole.

In some embodiments of the present invention, the plurality of organic light emitting devices include a red organic light emitting device, a green organic light emitting device, and a blue organic light emitting device, the color film layer further includes a red color block, a green color block, and a blue color block, the red color block and the red organic light emitting device are correspondingly disposed, the green color block and the green organic light emitting device are correspondingly disposed, the blue color block and the blue organic light emitting device are correspondingly disposed, and the black matrix is located between the color blocks of different colors. Therefore, the display panel can display a color picture, and is beneficial to improving the experience effect of a user.

In another aspect of the present invention, a display device is provided. In some embodiments of the invention, the display device comprises a display panel as described above. The display device has all the features and advantages of the display panel described above, and will not be described herein. In general, when a picture is required to be displayed, the display device has a good display effect, and the influence of light rays in the external environment on the display device is small; the display device can function as a mirror when the display of the picture is not required.

Drawings

Fig. 1 shows a schematic structure of a display panel according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a display panel according to another embodiment of the present invention;

FIG. 3 is a schematic diagram showing a structure of a display panel according to the related art;

FIG. 4 is a schematic diagram showing a structure of a display panel according to the related art;

FIG. 5 is a schematic diagram showing a structure of a display panel according to the related art;

FIG. 6 is a schematic diagram showing a structure of a display panel according to the related art;

FIG. 7 shows a schematic structural view of a semi-permeable semi-reflective membrane according to an embodiment of the present invention;

FIG. 8 illustrates a schematic structure of a reflective polarizer according to an embodiment of the present invention;

FIG. 9 is a schematic view showing a structure of a reflective polarizer according to another embodiment of the present invention;

FIG. 10 is a schematic view showing the structure of a reflective polarizer according to still another embodiment of the present invention;

fig. 11 is a schematic structural view showing a display panel according to still another embodiment of the present invention;

fig. 12 is a schematic structural view showing a display panel according to still another embodiment of the present invention;

FIG. 13 is a schematic diagram showing a structure of a touch layer according to an embodiment of the invention;

fig. 14 is a schematic structural diagram of a touch layer according to another embodiment of the invention.

Reference numerals illustrate:

100: a back plate; 200: an organic light emitting device; 210: an anode; 220: a light emitting layer; 230: a cathode; 300: a color film layer; 310: a black matrix; 320: a color block; 400: a circular polarizer; 410: a second linear polarizer; 420: a quarter wave plate; 500: a semi-permeable semi-reflective membrane; 510: a reflective polarizer; 511: a first sub-layer; 512: a second sub-layer; 513: a third sub-layer; 520: a first linear polarizer; 521: a first support layer; 522: a polarization functional layer; 523: a second support layer; 530: a diffusion bonding layer; 540: a pressure-sensitive adhesive layer; 600: an encapsulation layer; 610: a first inorganic encapsulation film layer; 620: an organic encapsulation film layer; 630: a second inorganic encapsulation film layer; 700: a touch layer; 710: a first metal layer; 720: an insulating layer; 730: a second metal layer; 721: a through hole; 740: a line contact layer; 750: a buffer layer; 800: a cover plate; 10: a pixel defining layer; 20: a first adhesive layer; 30: a second adhesive layer; 40: a separation column; 50: patterning the metal layer.

Detailed Description

Embodiments of the present invention are described in detail below. The following examples are illustrative only and are not to be construed as limiting the invention. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product.

In one aspect, the present invention provides a display panel. In some embodiments of the present invention, referring to fig. 1, 2, 11 and 12, a display panel may include a back sheet 100, a plurality of organic light emitting devices 200, a color film layer 300 or a circular polarizer 400, and a transflective film 500.

In some embodiments of the present invention, referring to fig. 1, 2, 11 and 12, the organic light emitting device 200 may include an anode 210, a light emitting layer 220 and a cathode 230 sequentially disposed in a direction away from the back plate 100, and the light emitting layer 220 is made of an organic light emitting material. In some embodiments of the present invention, referring to fig. 1, 2, 11 and 12, the display panel may include a pixel defining layer 10, the pixel defining layer 10 defining a plurality of openings, and a light emitting layer 220 of the organic light emitting device 200 fills at least part of the space of the openings.

In some embodiments of the present invention, the material of the anode 210 may include at least one of ITO (indium tin oxide) and silver (Ag). In some embodiments of the present invention, the anode 210 may be composed of a first indium tin oxide layer, a silver layer, and a second indium tin oxide layer, which are sequentially stacked.

In some embodiments of the present invention, the cathode 230 may be made of metal, for example, the cathode 230 may be made of magnesium-aluminum alloy.

In some embodiments of the present invention, the organic light emitting device may further include a light extraction layer, where the light extraction layer is located on a side of the cathode away from the back plate, and the light extraction layer is disposed to facilitate improving light extraction efficiency of the organic light emitting device, thereby facilitating improving brightness of a display screen and reducing power consumption of the display panel.

In some embodiments of the present invention, the organic light emitting device may further include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer between the anode and the light emitting layer. In some embodiments of the present invention, the organic light emitting device may further include at least one of a hole blocking layer, an electron transporting layer, and an electron injecting layer between the light emitting layer and the cathode.

In the organic light-emitting device, the anode and the cathode can comprise metal materials, and have certain reflection effect, and materials of other film layers of the organic light-emitting device, the pixel limiting layer and other film layers are mostly organic materials, so that the reflectivity is low, and the organic light-emitting device can be equivalently a reflection grating. When the light source is in the visible light range, the visible light comprises light rays with various different wavelengths and different colors, diffraction angles of the light rays with different wavelengths are different, and if a Circular Polarizer (CPOL) or a color film layer is not arranged above the organic light-emitting device, the color separation condition in the same energy level is easy to occur.

In some embodiments of the present invention, referring to fig. 1, a plurality of organic light emitting devices 200 are located on one side of a back plate 100, a color film layer 300 is located on one side of the organic light emitting devices 200 away from the back plate 100, the color film layer 300 may include a black matrix 310, and a transflective film 500 is located on one side of the color film layer 300 away from the back plate 100. Therefore, the semi-transparent and semi-reflective film has semi-transparent and semi-reflective properties, can reflect part of light irradiated on the semi-transparent and semi-reflective film, and part of light is transmitted, when the external environment irradiates on the semi-transparent and semi-reflective film, part of light can be reflected, when a display panel is not needed to display pictures, the display panel can be used as a mirror, the color film layer can provide a dark state, the problem of color separation caused by diffraction generated by the irradiation of the external environment to an organic light-emitting device can be relieved or even solved to a certain extent, and the display panel is used as the mirror and has good mirror effect; when the display panel is required to display pictures, the color film layer can reduce reflection of ambient light, especially the black matrix in the color film layer can absorb the ambient light irradiated on the color film layer, so that adverse effects on the display pictures caused by external ambient light reflection are obviously reduced, and the display panel has good display effect.

In other embodiments of the present invention, referring to fig. 2, a plurality of organic light emitting devices 200 are positioned at one side of the back plate 100, a circular polarizer 400 is positioned at one side of the organic light emitting devices 200 away from the back plate 100, and a semi-transparent semi-reflective film 500 is positioned at one side of the circular polarizer 400 away from the back plate 100. Therefore, the semi-transparent and semi-reflective film can reflect part of light irradiated on the film, part of light is transmitted, when the external environment irradiates on the film, part of light can be reflected, when a display panel is not needed to display pictures, the display panel can be used as a mirror, and the circular polarizer can provide a dark state, so that the problem of color separation is relieved or even solved at least to a certain extent, and the display panel has an excellent mirror effect; when a picture is required to be displayed, the circular polarizer can make the ambient light irradiated on the circular polarizer difficult to emit light, and the external ambient light is blocked in the circular polarizer, so that the reflection of the ambient light can be obviously reduced, and the display effect of the display panel is further improved.

In some related art, an LCD (liquid crystal display) display screen is combined with a transmissive and reflective member as a mirror display panel. The LCD display product is inflexible, and the LCD mirror display product is difficult to fold or bend; compared with an OLED display product, the display effect of the LCD display product is poor, and the color saturation is low; in addition, the backlight source of the LCD display product has a large volume, the thickness is difficult to be ultrathin, the molding is not easy, and the LCD display product is difficult to be manufactured into a required shape according to the requirement of a user.

In some related art, referring to fig. 3, the organic light emitting device 200 is combined with a circular polarizer 400, and the circular polarizer 400 is positioned at a side of the organic light emitting device 200 remote from the back plate 100, and such a display panel has no mirror function and cannot be used as a mirror.

In some related art, referring to fig. 4, an encapsulation layer 600 is disposed at a side of the organic light emitting device 200 remote from the back plate 100, and a color film layer 300 is disposed at a side of the encapsulation layer 600 remote from the back plate 100, and the display panel has no mirror display function and is severely color-separated.

In some related art, referring to fig. 5, a semi-transparent and semi-reflective film 500 is disposed on a side of the organic light emitting device 200 away from the back plate 100, and the definition is general, the mirror effect is general, and the color separation is obvious because the color of the cathode is affected, and the organic light emitting device cannot be used as a mirror display.

In some related art, referring to fig. 6, a patterned metal layer 50 is disposed on a side of the organic light emitting device 200 away from the back plate 100, and the patterned metal layer 50 has a hollowed-out region. For example, a patterned metal layer (e.g., an aluminum layer, etc.) may be formed on a side of the organic light emitting device 200 remote from the back plane 100, the metal layer having a high reflectivity, such that the display panel has a mirror effect, and the area of the pixel display region is directly displayed, but the non-display region is specularly reflected. In the display panel, light emitted by the organic light emitting device 200 is emitted from the hollow area of the patterned metal layer 50, the aperture ratio of the metal mirror surface is smaller, the light emission is affected, and the display effect of the display panel is further affected; the definition of the display panel is affected, and after the cover plate is installed, the visual ghost and blurring of the specular reflection area and the cathode reflection area are aggravated; the mirror surface effect is poor, and serious color separation phenomenon can be generated; in addition, this solution cannot integrate FMLOC (Flexible Multiple Layer On Cell, touch layer is disposed on the encapsulation layer) touch structure. The display panel can not integrate an FMLOC touch structure and can generate serious color separation phenomenon, so that the application of the flexible OLED patterning mirror display technology is limited.

Compared with the technical scheme in the related art, in the invention, the color film layer 300 or the circular polarizer 400 is arranged on one side of the organic light emitting device 200 far away from the backboard 100, and the semi-transparent semi-reflective film 500 is arranged on one side of the color film layer 300 or the circular polarizer 400 far away from the backboard 100, so that the display panel has a good mirror effect, no obvious color separation problem, and the color film layer or the circular polarizer can reduce the reflection of external environment light when displaying pictures, thereby improving the display effect of the display panel.

In some embodiments of the present invention, referring to fig. 1, 2 and 7, the transflective film 500 may include a reflective polarizer (APF, advanced Polarizer Film) 510 and a first linear polarizer 520, the first linear polarizer 520 being positioned at a side of the reflective polarizer 510 near the back plate 100. Therefore, the semi-transparent and semi-reflective film can transmit part of light, and part of light is reflected, so that the mirror reflectivity and definition can be used for mirror display.

In some embodiments of the present invention, referring to fig. 7, the first linear polarizer 520 may include a first support layer 521, a polarization function layer 522, and a second support layer 523, the polarization function layer 522 being located between the first support layer 521 and the second support layer 523. The polarization layer 522 is not isotropic to absorb light, and can transmit light with a certain polarization direction, and light with a propagation direction different from the polarization direction can be absorbed, thereby functioning as a linear polarizer.

In some embodiments of the present invention, the material of the polarization function layer 522 may be polyvinyl alcohol (PVA), where the polarization function layer 522 is easy to absorb water and fade to lose polarization performance, and the first support layer 521 and the second support layer 523 are respectively disposed on two sides of the polarization function layer 522, and the material of the first support layer 521 and the second support layer 523 may include cellulose Triacetate (TAC), so that the first support layer and the second support layer may not only play a role in supporting the polarization function layer, but also isolate water and oxygen to play a role in protecting the polarization function layer. In addition, the first supporting layer and the second supporting layer have good optical uniformity and light transmittance, and are beneficial to improving the overall performance of the display panel.

In some embodiments of the present invention, referring to fig. 7, the transflective film 500 may further include a diffusion bonding layer 530, the diffusion bonding layer 530 being located between the reflective polarizer 510 and the first linear polarizer 520. The diffusion bonding layer has a light diffusion function and diffuses light. The material of the diffusion bonding layer is not particularly limited in the present invention, and those skilled in the art can select according to actual requirements.

In some embodiments of the present invention, referring to fig. 7, the transflective film 500 may further include a pressure sensitive adhesive layer 540, and the transflective film 500 may be adhered to a side of the color film layer or the circular polarizer, which is away from the back plate, using the pressure sensitive adhesive layer 540.

Before the semi-transparent and semi-reflective film is adhered to one side of the color film layer or the circular polaroid, which is far away from the back plate, the surface of the pressure-sensitive adhesive layer can be adhered with a release film, and when the semi-transparent and semi-reflective film is required to be adhered, the release film is torn off. The reflective polarizer may further comprise a protective layer disposed on a side of the reflective polarizer away from the first linear polarizer for protecting the reflective polarizer and the first linear polarizer.

In some embodiments of the present invention, the reflective polarizer 510 may have a thickness of 20 μm to 30 μm, for example, the reflective polarizer 510 may have a thickness of 20 μm, 22 μm, 25 μm, 26 μm, 28 μm, 30 μm, etc., and the reflective polarizer has a thinner thickness, which is advantageous for reducing the thickness of the display panel, thereby improving the flexibility of the display panel.

In some embodiments of the present invention, the thickness of the polarization function layer 522 may be 20 μm to 30 μm, for example, the thickness of the polarization function layer 522 may be 20 μm, 23 μm, 25 μm, 28 μm, 30 μm, etc., and thus, the polarization function layer of the above thickness may function as a polarizer as well as facilitate light and thin of the display panel, thereby facilitating the improvement of flexibility of the display panel.

In some embodiments of the present invention, the thickness of the first support layer 521 may be 35 μm to 45 μm, for example, the thickness of the first support layer 521 may be 35 μm, 38 μm, 40 μm, 43 μm, 45 μm, etc., and the thickness of the first support layer may be within the above range, so that the polarization function layer may be better supported and protected.

In some embodiments of the present invention, the thickness of the second support layer 523 may be 35 μm to 45 μm, for example, the thickness of the second support layer 523 may be 35 μm, 37 μm, 40 μm, 42 μm, 45 μm, etc., and the thickness of the second support layer may be within the above range, and may better function to protect and support the polarization function layer.

In some embodiments of the present invention, the thickness of the diffusion bonding layer 530 may be 5 μm to 10 μm, for example, the thickness of the diffusion bonding layer 530 may be 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, etc., and the diffusion bonding layer of the above thickness may firmly bond the reflective polarizer and the first linear polarizer.

In some embodiments of the present invention, the pressure-sensitive adhesive layer 540 may have a thickness of 20 μm to 30 μm, for example, the pressure-sensitive adhesive layer 540 may have a thickness of 20 μm, 22 μm, 25 μm, 28 μm, 30 μm, etc., whereby the pressure-sensitive adhesive layer has a suitable thickness to firmly adhere the transflective film to the structure on the back sheet.

In some embodiments of the present invention, referring to fig. 8 to 10, the reflective polarizer 510 may include a plurality of sub-layers, and any two adjacent sub-layers have different refractive indexes, so that the reflective polarizer may reflect more ambient light.

In some embodiments of the present invention, referring to fig. 8, the reflective polarizer 510 may include a plurality of sub-layers, three sub-layers of the reflective polarizer 510, which are arbitrarily stacked, are denoted as a first sub-layer 511, a second sub-layer 512, and a third sub-layer 513, the second sub-layer 512 is positioned between the first sub-layer 511 and the third sub-layer 513, and the refractive index of the second sub-layer 512 is smaller than the refractive index of the first sub-layer 511 and the refractive index of the third sub-layer 513, or the refractive index of the second sub-layer 512 is larger than the refractive index of the first sub-layer 511 and the refractive index of the third sub-layer 513. Therefore, the reflectivity of the reflective polarizer to the ambient light can be improved, and the mirror surface effect of the display panel can be improved.

In some embodiments of the present invention, referring to fig. 9, the reflective polarizer 510 may include three sub-layers stacked one on another, and one first sub-layer 511 is disposed on each of two surfaces of the second sub-layer 512. In other embodiments of the present invention, referring to fig. 10, the reflective polarizer 510 may include a first sub-layer 511, a second sub-layer 512, and a first sub-layer 511, which are sequentially stacked. Of course, the reflective polarizer 510 may be formed of other numbers of sublayers, and those skilled in the art may select and set the same according to actual requirements.

In some embodiments of the present invention, referring to fig. 2 and 12, the circular polarizer 400 may include a second linear polarizer 410 and a quarter wave plate 420, the quarter wave plate 420 being located at a side of the second linear polarizer 410 near the back plate 100. The circular polarizer can reduce the reflectivity of the ambient light, thereby reducing the adverse effect of the ambient light reflection on the display picture. Specifically, the external ambient light passes through the second polarizer 410 at the outer side, only half of the linearly polarized light remains in the light source, and the quarter wave plate 420 with an included angle of 45 ° below can convert the linearly polarized light into circularly polarized light; when the light is reflected by the metal electrode, the orthogonal circularly polarized light is formed, so that the reflected circularly polarized light passes through the quarter wave plate 420, and finally, the direction of the polarized light is perpendicular to the transmission axis of the circular polarizer, the light cannot be emitted any more, and the external light is blocked in the circular polarizer. Therefore, when the dark state is required, the display panel can faithfully present information, and the contrast ratio is remarkably improved. Under the shielding of the circular polarizer, the displayed information is still clearly visible even under sunlight.

In some embodiments of the present invention, the second linear polarizer 410 may also include a polarization functional layer and supporting layers located on two sides of the polarization functional layer, and the supporting layers may be made of cellulose triacetate.

In some embodiments of the present invention, referring to fig. 1, 2, 11, and 12, the plurality of organic light emitting devices 200 may include a red organic light emitting device, a green organic light emitting device, and a blue organic light emitting device, the red organic light emitting device may emit red light, the green organic light emitting device may emit green light, and the blue organic light emitting device may emit blue light, so that the display panel may display a color picture.

In some embodiments of the present invention, referring to fig. 1 and 11, the color film layer 300 may further include a black matrix 310 and color blocks 320, the black matrix 310 being located between adjacent color blocks 320. In some embodiments of the present invention, the color blocks 320 may include red, green, and blue color blocks, the red and red organic light emitting devices being disposed correspondingly, the green and green organic light emitting devices being disposed correspondingly, the blue color block being disposed correspondingly to the blue organic light emitting device, and the black matrix being located between the color blocks of different colors. Therefore, the black matrix can absorb light, and the color block can allow the light in a specific wavelength range to pass through, so that the light emitting efficiency of the display panel is improved, and the display effect of the display panel is further improved.

In some embodiments of the present invention, referring to fig. 11 and 12, the display panel may further include an encapsulation layer 600 and a touch layer 700, the encapsulation layer 600 being located at a side of the organic light emitting device 200 remote from the back plate 100, the touch layer 700 being located between the encapsulation layer 600 and the color film layer 300 or between the encapsulation layer 600 and the circular polarizer 400. FMLOC (Flexible Multiple Layer On Cell, touch control layer is set up on packaging layer), combine with color film layer or circular polaroid and semi-transparent semi-reflective membrane, can make the display panel possess In-cell touch control function further; the touch control layer can be of a metal grid structure, has good flexibility, is easy to bend or fold, and is beneficial to improving the flexibility of the display panel; the touch control layer is integrated on the packaging layer, so that the light and thin display panel is facilitated.

In some embodiments of the present invention, referring to fig. 11 and 12, the encapsulation layer 600 may include a first inorganic encapsulation film layer 610, an organic encapsulation film layer 620, and a second inorganic encapsulation film layer 630 sequentially disposed, whereby the encapsulation layer may prevent the light emitting device from being corroded by external water and oxygen, thereby facilitating the improvement of the display effect of the display panel and the prolongation of the service life of the display panel.

In some embodiments of the present invention, the material of the first inorganic encapsulation film 610 and the material of the second inorganic encapsulation film 630 may each independently include at least one of silicon nitride, silicon oxide and silicon oxynitride, and thus, the first inorganic encapsulation film 610 and/or the second inorganic encapsulation film 630 of the above materials may function as an effective barrier to water and oxygen, thereby being beneficial to prolonging the service life of the display panel. In some embodiments of the present invention, the material of the first inorganic encapsulation layer 610 may be silicon oxynitride, and the material of the second inorganic encapsulation layer 630 may be silicon nitride.

In some embodiments of the present invention, the first inorganic encapsulation film and the second inorganic encapsulation film may be fabricated by chemical vapor deposition. In some embodiments of the present invention, the organic encapsulating film layer may be fabricated by means of ink-jet printing.

In some embodiments of the present invention, the display panel may further include a spacer 40, the spacer 40 being located at a side of the pixel defining layer 10 remote from the back panel 100, and the spacer 40 may cover a portion of a surface of the pixel defining layer 10 remote from the back panel 100. In some embodiments of the present invention, a light emitting layer may be formed by vapor deposition, and when the light emitting layer is manufactured, the isolation column may play a role in supporting an FMM Mask (fine metal Mask), so that a certain distance is provided between the Mask and the lower film layer, and the Mask is prevented from contacting the lower film layer, thereby preventing the lower film layer from being damaged by the Mask.

In some embodiments of the present invention, referring to fig. 13 and 14, the touch layer 700 may include a first metal layer 710, an insulating layer 720, and a second metal layer 730 sequentially disposed, wherein the insulating layer 720 has a via 721, and the first metal layer 710 and the second metal layer 730 are in contact at the via 721.

In some embodiments of the present invention, the material of the insulating layer 720 may include silicon nitride. The materials of the first metal layer 710 and the second metal layer 730 are not particularly limited in the present invention, and may be selected and set according to actual needs by those skilled in the art.

In some embodiments of the present invention, referring to fig. 14, the touch layer 700 may further include a line contact layer 740, and the line contact layer 740 may have a metal line contact point (pad) provided with a wire for connecting structures of the same layer or different layers, thereby better transmitting signals.

In some embodiments of the present invention, referring to fig. 14, the touch layer 700 may further include a buffer layer 750. The buffer layer 750 may be disposed on a surface of the package layer 600 away from the backplate 100, and the material may include silicon nitride.

In some embodiments of the present invention, referring to fig. 11 and 12, a first adhesive layer 20 may be disposed between the touch layer 700 and the color film layer 300 or between the touch layer 700 and the circular polarizer 400. In some embodiments of the present invention, the first adhesive layer 20 may be an Optically Clear Adhesive (OCA), and the first adhesive layer may firmly adhere the touch layer and the color film layer or the circular polarizer, and has good light transmittance, which is beneficial to improving the display effect of the display panel.

In some embodiments of the present invention, referring to fig. 11 and 12, the display panel may further include a cover plate 800, and the cover plate 800 is adhered to the side of the transflective film 500 away from the back plate 100 through the second adhesive layer 30, and the cover plate may function to protect an underlying film layer, thereby being beneficial to extend the service life of the display panel. In some embodiments of the present invention, the cover plate may be a glass cover plate and the second adhesive layer 30 may be an optically clear adhesive.

In some embodiments of the present invention, referring to fig. 12, an encapsulation layer 600 is disposed on a side of the organic light emitting device 200 away from the back plate 100, a touch layer 700 is integrated on the encapsulation layer 600, a circular polarizer 400 is disposed on a side of the touch layer 700 away from the back plate 100, a quarter-wave plate 420 of the circular polarizer 400 is disposed near the encapsulation layer 600, and a semi-transparent and semi-reflective film 500 is disposed on a side of the circular polarizer 400 away from the back plate 100. The display panel has an In-cell touch function; the display panel has the advantages of good mirror effect, high definition and no color separation phenomenon, and can meet the use requirement of a conventional OLED (organic light emitting diode) when displaying pictures, and the display panel has good flexibility and can be used in the field of flexible display.

In other embodiments of the present invention, referring to fig. 11, an encapsulation layer 600 is disposed on a side of the organic light emitting device 200 away from the back plate, a touch layer 700 is integrated on the encapsulation layer 600, a color film layer 300 is disposed on a side of the touch layer 700 away from the back plate 100, the color film layer 300 includes a black matrix 310 and a color block 320, the color block 320 can transmit light in a specific wavelength range, the black matrix 310 has a better light absorption effect, and a transflective film 500 is disposed on a side of the color film layer 300 away from the back plate 100. The display panel has an In-cell touch function; the display panel has excellent mirror effect, no color separation phenomenon and high definition, and has light output rate of about 42.5% and high light output rate, and the color film layer can reduce the reflection interference of the film layer below the semi-transparent semi-reflective film. Compared with the technical scheme of arranging the circular polaroid, the display panel provided with the color film layer has better flexibility, is easier to fold and curl, and is convenient to manufacture into a display product with a shape required by a user.

In some embodiments of the present invention, the back plate 100 may include a plurality of Thin Film Transistors (TFTs). In some embodiments of the present invention, the thin film transistor may include an active layer, a first gate layer and/or a second gate layer, an interlayer dielectric layer, a source-drain electrode layer, and a planarization layer, and when two gate layers are provided, an insulating layer is required to be provided between the two gate layers. The gate layer may be provided with a gate and a trace, and the source-drain electrode layer may be provided with a source, a drain and a trace, the anode of the organic light emitting device being connected to the source or the drain. In some embodiments of the present invention, the thin film transistor may be a low temperature polysilicon thin film transistor (LTPS-TFT), and the active layer is made of polysilicon (P-Si). In other embodiments of the present invention, the thin film transistor may be an oxide thin film transistor (IGZO-TFT), a portion of polysilicon being replaced by IGZO.

The display panel provided by the invention is suitable for the field of AMOLED (Active-matrix organic light emitting diode, active matrix organic light emitting diode), such as the field of LTPS-TFTAMOLED, IGZO-TFTAMOLED mirror display. Specifically, the display panel provided by the invention can be used in the fields of flexible OLED consumer electronics (mobile phones comprise folding flip mobile phones/auxiliary screens, notebook auxiliary screens and the like, wearable displays, IPAD (internet protocol ad), advertising machines and the like), flexible OLED smart home (cosmetic displays, refrigerator displays, home appliance displays, airport flexible displays and the like) and other displays possibly applied to flexible mirror display panels.

The display panel provided by the invention is an OLED compatible process in the whole manufacturing method, and the display panel can be manufactured by adopting a conventional OLED manufacturing process.

In another aspect of the present invention, a display device is provided. In some embodiments of the invention, the display device may include the display panel described previously. Accordingly, the display device has all the features and advantages of the display panel described above, and will not be described herein. In general, the display device has a good mirror display function, can be used as a mirror when a picture is not required to be displayed, is not easily affected by ambient light when the picture is required to be displayed, and has a good display effect.

The specific type of the display device is not particularly required, and a person skilled in the art can flexibly select the display device according to actual requirements, for example, the display device can be a display device such as a mobile phone, an iPad, a notebook and the like. It will be understood by those skilled in the art that the display device has the necessary structure and components for a conventional display device, such as a mobile phone, in addition to the aforementioned display panel, and further includes the necessary structure and components for a battery back cover, a middle frame, a touch panel, an audio module, a main board, etc.

The terms "first," "second," and "third" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, reference to the terms "one embodiment," "another embodiment," "some embodiments," or "other embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. A display panel, comprising:

a back plate;

a plurality of organic light emitting devices located at one side of the back plate;

the color film layer or the circular polaroid is positioned on one side of the organic light-emitting device, which is far away from the backboard, and the color film layer comprises a black matrix; and

the semi-transparent and semi-reflective film is positioned on one side of the color film layer or the circular polarizer, which is far away from the backboard.

2. The display panel of claim 1, wherein the transflective film comprises:

the reflective polarizer comprises a plurality of sub-layers, and the refractive indexes of any two adjacent sub-layers are different;

the first linear polarizer is positioned on one side of the reflective polarizer, which is close to the backboard.

3. The display panel of claim 2, wherein the first linear polarizer comprises a first support layer, a polarization function layer, and a second support layer, the polarization function layer being located between the first support layer and the second support layer;

and/or, the semi-transparent and semi-reflective film further comprises a diffusion bonding layer, wherein the diffusion bonding layer is positioned between the reflective polarizer and the first linear polarizer.

4. The display panel of claim 3, wherein the transflective film satisfies at least one of the following conditions:

the thickness of the reflective polarizer is 20-30 mu m;

the thickness of the polarization functional layer is 20-30 mu m;

the thickness of the first supporting layer is 35-45 mu m;

the thickness of the second supporting layer is 35-45 mu m;

the diffusion bonding layer has a thickness of 5 μm to 10 μm.

5. The display panel according to claim 2, wherein three sub-layers of the reflective polarizer, which are arbitrarily stacked, are denoted as a first sub-layer, a second sub-layer, and a third sub-layer, the second sub-layer is located between the first sub-layer and the third sub-layer, and a refractive index of the second sub-layer is smaller than a refractive index of the first sub-layer and the third sub-layer, or a refractive index of the second sub-layer is larger than a refractive index of the first sub-layer and the third sub-layer.

6. The display panel of any one of claims 1-5, wherein the circular polarizer comprises a second linear polarizer and a quarter wave plate.

7. The display panel according to any one of claims 1 to 5, further comprising:

the packaging layer is positioned on one side of the organic light-emitting device, which is far away from the backboard;

the touch control layer is positioned between the packaging layer and the color film layer or between the packaging layer and the circular polarizer.

8. The display panel of claim 7, wherein the touch layer comprises a first metal layer, an insulating layer, and a second metal layer disposed in that order, the insulating layer having a via, the first metal layer and the second metal layer contacting at the via.

9. The display panel of any one of claims 1-5, wherein the plurality of organic light emitting devices includes a red organic light emitting device, a green organic light emitting device, and a blue organic light emitting device, the color film layer further includes red color blocks, green color blocks, and blue color blocks, the red color blocks and the red organic light emitting device are disposed correspondingly, the green color blocks and the green organic light emitting device are disposed correspondingly, the blue color blocks and the blue organic light emitting device are disposed correspondingly, and the black matrix is located between the color blocks of different colors.

10. A display device comprising the display panel of any one of claims 1-9.