CN113097281A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN113097281A CN113097281A CN202110352079.4A CN202110352079A CN113097281A CN 113097281 A CN113097281 A CN 113097281A CN 202110352079 A CN202110352079 A CN 202110352079A CN 113097281 A CN113097281 A CN 113097281A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- 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
- H10K50/85—Arrangements for extracting light from the devices
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- 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
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- Electroluminescent Light Sources (AREA)
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Abstract
The embodiment of the invention discloses a display panel and a display device. Wherein, this display panel includes: the light-emitting device comprises a substrate, and a light-emitting device layer, a light transmittance adjustable functional layer and a color film layer which are positioned on the substrate; the display panel is provided with a light transmittance adjustable display area, the light transmittance adjustable display area comprises a plurality of light emitting areas arranged at intervals and non-light emitting areas with adjustable light transmittance positioned between the light emitting areas, and the light emitting device layer covers the light emitting areas; the color film layer covers the luminous area; the functional layer with adjustable light transmittance covers the non-luminous area; the color film layer is positioned on the light-emitting side of the light-emitting device layer. According to the technical scheme provided by the embodiment of the invention, the non-luminous area is provided with the functional layer with the adjustable light transmittance, so that the functional layer with the adjustable light transmittance is black when the display panel normally displays, the non-luminous area is black, the reflectivity of ambient light is reduced, and the functional layer with the adjustable light transmittance is in a transparent state when the camera under the screen works and the like, so that the light transmittance of the non-luminous area is improved, and the shooting effect of the camera under the screen is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the emergence of folding mobile phones, increasingly stringent requirements are placed on the thickness of the screen, and the mobile phone screen is expected to become thinner; on the other hand, with the widespread application of an OLED (Organic Light-Emitting Diode) in a wearable product, a new requirement is also put forward on the power consumption of the screen body.
The COE (Color Filter on Encapsulation layer, Color film manufacturing on organic light emitting layer) technology is more and more emphasized, the COE technology is that a Black Matrix (BM) and a Color Filter (CF) arranged on the same layer as the BM are directly formed on a packaging film layer or a flat layer in the light emitting direction of an OLED device, a polarizer arranged on the light emitting side of the existing OLED device and used for eliminating ambient light is omitted, and the thickness and the power consumption of a screen body can be reduced.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, wherein a non-luminous region is provided with a light transmittance adjustable functional layer to replace a black matrix in the prior art, so that the light transmittance adjustable functional layer is black when the display panel normally displays, the light transmittance adjustable non-luminous region is black, the non-luminous region can absorb ambient light and reduce the reflectivity of the ambient light, the influence of the ambient light is eliminated, the display effect is improved, the thickness and the power consumption of a screen body are reduced, and the light transmittance adjustable functional layer is in a transparent state when photosensitive components such as a camera under the screen work, so that the light transmittance of the light transmittance adjustable non-luminous region is improved, the shooting effect of the camera under the screen is improved, and full-screen display is realized.
In a first aspect, an embodiment of the present invention provides a display panel, including: the light-emitting device comprises a substrate, and a light-emitting device layer, a light transmittance adjustable functional layer and a color film layer which are positioned on the substrate;
the display panel is provided with a light transmittance adjustable display area, the light transmittance adjustable display area comprises a plurality of light emitting areas arranged at intervals and non-light emitting areas with adjustable light transmittance positioned between the light emitting areas, and the light emitting device layer covers the light emitting areas; the color film layer covers the luminous area; the light transmittance adjustable functional layer covers the non-luminous area with adjustable light transmittance; the color film layer is positioned on the light-emitting side of the light-emitting device layer. The functional layer with adjustable light transmittance is arranged on the non-luminous area to replace a black matrix in the prior art, so that the functional layer with adjustable light transmittance is black when the display panel normally displays, the non-luminous area with adjustable light transmittance is black, the functional layer with adjustable light transmittance can absorb ambient light, the reflectivity of the ambient light is reduced, the influence of the ambient light is eliminated, the display effect is improved, the thickness and the power consumption of a screen body are reduced, the functional layer with adjustable light transmittance is in a transparent state when photosensitive components such as a camera and the like under the screen work, the light transmittance of the non-luminous area with adjustable light transmittance is improved, the shooting effect of the camera under the screen is improved, the full-screen display is realized, the problem that after a COE technology is adopted to replace a polaroid is solved, a Black Matrix (BM) can cover all the non-luminous areas, light cannot penetrate through the screen body, namely the whole transmittance of the screen body is reduced, thereby limiting the application range thereof.
Further, the functional layer with adjustable light transmittance is used to be black when the light emitting device layer emits light.
Further, the light transmittance adjustable functional layer comprises a first electrode layer, a light transmittance adjustable material layer and a second electrode layer which are sequentially stacked along the thickness direction of the display panel;
the first electrode layer or the second electrode layer is reused as a touch layer. One of the first electrode layer and the second electrode layer is multiplexed as a touch layer, namely an electrode sharing mechanism is adopted, so that the complexity of wiring can be reduced, signal crosstalk between wirings can be reduced, the number of masks can be reduced, and the cost can be saved.
Further, the touch layer is located between the light transmittance adjustable material layer and the substrate, and the light transmittance adjustable material layer comprises a water blocking material layer. Set up at least some rete in the adjustable material layer of luminousness into water blocking material, can protect the touch-control layer, avoid the conducting material in the touch-control layer to be corroded by external steam, can reduce screen body thickness simultaneously, avoid additionally setting up the condition that the protective layer leads to screen body thickness to increase to take place.
Further, the light transmittance adjustable material layer comprises an ion storage layer and an electrochromic layer which are stacked in the thickness direction of the display panel, and the ion storage layer comprises at least one of the following water blocking materials: prussian blue, prussian blue derivatives, FeNiHCF and FeHCF.
Furthermore, the color film layer is positioned between the first electrode layer and the second electrode layer, and at least part of the color film layer is embedded into the light transmittance adjustable material layer. The color film layer is embedded into the light transmittance adjustable material layer, so that the color film layer and part of the film layer in the light transmittance adjustable material layer are arranged on the same layer, and the thickness of the screen body can be reduced.
Furthermore, the ion storage layer at least covers the non-luminous region with adjustable light transmittance, the electrochromic layer is positioned in the non-luminous region with adjustable light transmittance, the color film layer is positioned in the luminous region, at least part of the color film layer is embedded into the ion storage layer and/or the electrochromic layer, and the ion storage layer is positioned between the touch layer and the electrochromic layer.
Furthermore, the touch layer is a self-contained touch layer or a mutual-contained touch layer.
Furthermore, the touch layer is a mutual capacitance type touch layer, and the light transmittance adjustable material layer covers at least part of the touch sensing electrodes of the touch layer;
among the first electrode layer and the second electrode layer, the electrode layer which is not reused as the touch layer is a whole transparent electrode. The first electrode layer or the second electrode layer is multiplexed to be a touch sensing electrode of a mutual capacitance type touch layer, so that the electrode layer which is not multiplexed to be the touch layer is conveniently set to be a whole transparent electrode, the complexity of wiring is reduced, the process manufacturing difficulty is reduced, the situation that the electrode layer shields light emitted by the light emitting device layer is avoided, the photosensitive part can be prevented from being operated, external light is shielded, and the light transmittance of a non-light emitting area is influenced.
In a second aspect, an embodiment of the present invention further provides a display apparatus, including the display panel provided in any embodiment of the present invention, and a photosensitive component disposed below the light transmittance adjustable display area, where the light transmittance adjustable functional layer is configured to be in a transparent state when the photosensitive component operates.
In the technical solution of the embodiment of the present invention, the display panel includes: the light-emitting device comprises a substrate, and a light-emitting device layer, a light transmittance adjustable functional layer and a color film layer which are positioned on the substrate; the display panel is provided with a light transmittance adjustable display area, the light transmittance adjustable display area comprises a plurality of light emitting areas arranged at intervals and non-light emitting areas with adjustable light transmittance positioned between the light emitting areas, and the light emitting device layer covers the light emitting areas; the color film layer covers the luminous area; the functional layer with adjustable light transmittance covers the non-luminous area; the color film layer is positioned on the light emitting side of the light emitting device layer, the non-light emitting area is provided with the light transmittance adjustable functional layer to replace a black matrix in the prior art, so that the light transmittance adjustable functional layer is black when the display panel normally displays, the light transmittance adjustable non-light emitting area is black, the light transmittance adjustable functional layer can absorb ambient light and reduce the reflectivity of the ambient light, the influence of the ambient light is eliminated, the display effect is improved, the thickness and the power consumption of a screen body are reduced, the light transmittance of the light transmittance adjustable non-light emitting area is improved when photosensitive components such as a camera and the like under the screen work, the light transmittance of the light transmittance adjustable non-light emitting area is improved, the shooting effect of the camera under the screen is improved, the full-screen display is realized, and the problem that after a COE technology is adopted to replace a polaroid is solved, the Black Matrix (BM) can cover all the, the optical sensors such as optical fingerprints and cameras cannot be integrated under the screen, so that the application range of the optical sensors is limited.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic partial cross-sectional view of a display area with adjustable light transmittance along a direction A1a2 according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a partial top view structure of a display area with adjustable light transmittance during normal display of a screen according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a partial top view structure of a light transmittance adjustable display region when a photosensitive member is in operation according to an embodiment of the present invention;
fig. 5 is a schematic partial cross-sectional view of another display area with adjustable light transmittance along the direction A1a2 according to an embodiment of the present invention;
fig. 6 is a schematic partial cross-sectional view of another display area with adjustable light transmittance along the direction A1a2 according to an embodiment of the present invention;
fig. 7 is a schematic top view of a self-contained touch layer according to an embodiment of the invention;
fig. 8 is a schematic top view of a mutually-capacitive touch layer according to an embodiment of the present invention;
fig. 9 is a schematic partial cross-sectional view of another display area with adjustable light transmittance along the direction A1a2 according to an embodiment of the present invention;
fig. 10 is a schematic partial cross-sectional view of another display area with adjustable light transmittance along the direction A1a2 according to an embodiment of the present invention;
fig. 11 is a schematic partial cross-sectional view of another display area with adjustable light transmittance along the direction A1a2 according to an embodiment of the present invention;
fig. 12 is a schematic partial cross-sectional view of another display area with adjustable light transmittance according to an embodiment of the invention;
fig. 13 is a schematic partial cross-sectional view of another display area with adjustable light transmittance according to an embodiment of the invention;
fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 16 is a signal waveform diagram according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The embodiment of the invention provides a display panel. Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. Fig. 2 is a schematic partial cross-sectional view of a display area with adjustable light transmittance along a direction A1a2 according to an embodiment of the present invention. As shown in fig. 1 and 2, the display panel includes: the light emitting device comprises a substrate 10, and a light emitting device layer 20, a light transmittance adjustable functional layer 30 and a color film layer 40 which are arranged on the substrate 10.
The display panel 1 is provided with a light transmittance adjustable display area 101, the light transmittance adjustable display area 101 comprises a plurality of light emitting areas 102 arranged at intervals and light transmittance adjustable non-light emitting areas 103 located between the light emitting areas 102, and the light emitting device layer 20 covers the light emitting areas 102; the color film layer 40 covers the light emitting region 102; the light transmittance adjustable functional layer 30 covers the light transmittance adjustable non-light emitting region 103; the color film layer 40 is located on the light emitting side of the light emitting device layer 20.
The light transmittance of a partial area or a whole area of the whole display area of the display panel can be adjustable, and the size of the light transmittance adjustable display area can be set according to needs. Fig. 1 exemplarily shows a case where the entire display region of the display panel is a light transmittance adjustable display region, and fig. 2 may be a schematic cross-sectional structure of a partial region 1011 of the light transmittance adjustable display region 101, and the structure of the remaining region of the light transmittance adjustable display region 101 is the same as or similar to that of the partial region 1011. The display panel may include an Organic Light-Emitting Diode (OLED) display panel. The light emitting device layer 20 may include an organic light emitting device layer. The light emitting device layer 20 may be used to form a plurality of light emitting devices arranged in an array, for example, the light emitting devices may be organic light emitting diodes, and the light emitting devices may correspond to the light emitting regions 102. The light emitting device layer may include an anode layer, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, a cathode layer, and the like, which are sequentially stacked in the thickness direction Z of the display panel. The color film layer 40 may include at least one of: red color block, green color block, blue color block, etc. The color film layer 40 may be located in the light emitting region 102 without covering the non-light emitting region 103. The first direction X and the second direction Y in fig. 1 may be parallel to the display panel, and the first direction X, the second direction Y, and the thickness direction Z along the display panel may be perpendicular to each other. The substrate 10 may include a flexible substrate or a rigid substrate, etc.
The transmittance of the non-light emitting region 103 with adjustable transmittance may be changed by adjusting the transmittance of the light transmittance adjustable functional layer 30, thereby changing the transmittance of the light transmittance adjustable display region 101. Optionally, the functional layer 30 with adjustable light transmittance is used to be black when the light emitting device layer 20 emits light, so that the non-light emitting region 103 with adjustable light transmittance is used to be black when the light emitting device layer 20 emits light, that is, when the display panel normally displays, the functional layer 30 with adjustable light transmittance can function similar to a black matrix, and forms a COE structure with the color film layer 40(CF), and the functional layer 30 with adjustable light transmittance has a very low light transmittance, can absorb ambient light, reduces the reflectivity of the ambient light, so as to eliminate the influence of the ambient light and improve the display effect, as shown in fig. 3, fig. 3 is a schematic diagram of a local overlooking structure of the display region with adjustable light transmittance when the screen normally displays according to the embodiment of the present. Optionally, the functional layer 30 with adjustable light transmittance is used to be in a transparent state when the photosensitive component operates, so that the non-light-emitting region 103 with adjustable light transmittance is in a transparent state when the photosensitive component operates, that is, when the photosensitive components such as the camera under the screen operate, the functional layer with adjustable light transmittance is in a transparent state, the light transmittance is very high, so as to improve the light transmittance, so that more external light is irradiated to the photosensitive component through the non-light-emitting region 103 with adjustable light transmittance in the transparent state, so as to improve the shooting effect of the camera under the screen, and to implement full-screen display, as shown in fig. 4, fig. 4 is a schematic diagram of a partial overlooking structure of the display region with adjustable light transmittance when the photosensitive.
In the technical solution of this embodiment, the display panel includes: the light-emitting device comprises a substrate, and a light-emitting device layer, a light transmittance adjustable functional layer and a color film layer which are positioned on the substrate; the display panel is provided with a light transmittance adjustable display area, the light transmittance adjustable display area comprises a plurality of light emitting areas arranged at intervals and non-light emitting areas with adjustable light transmittance positioned between the light emitting areas, and the light emitting device layer covers the light emitting areas; the color film layer covers the luminous area; the functional layer with adjustable light transmittance covers the non-luminous area; the color film layer is positioned on the light emitting side of the light emitting device layer, the non-light emitting area is provided with the light transmittance adjustable functional layer to replace a black matrix in the prior art, so that the light transmittance adjustable functional layer is black when the display panel normally displays, the light transmittance adjustable non-light emitting area is black, the light transmittance adjustable functional layer can absorb ambient light and reduce the reflectivity of the ambient light, the influence of the ambient light is eliminated, the display effect is improved, the thickness and the power consumption of a screen body are reduced, the light transmittance of the light transmittance adjustable non-light emitting area is improved when photosensitive components such as a camera and the like under the screen work, the light transmittance of the light transmittance adjustable non-light emitting area is improved, the shooting effect of the camera under the screen is improved, the full-screen display is realized, and the problem that after a COE technology is adopted to replace a polaroid is solved, the Black Matrix (BM) can cover all the, the optical sensors such as optical fingerprints and cameras cannot be integrated under the screen, so that the application range of the optical sensors is limited.
Optionally, on the basis of the foregoing embodiment, fig. 5 is a schematic partial cross-sectional structure diagram of another light transmittance adjustable display region along the A1a2 direction provided in the embodiment of the present invention, where the light transmittance adjustable functional layer 30 includes a first electrode layer 31, a light transmittance adjustable material layer 32, and a second electrode layer 33 sequentially stacked along the thickness direction Z of the display panel.
The first electrode layer 31 may be a conductive layer with a high transmittance, for example, a transparent electrode layer, so as to prevent the photosensitive member from blocking external light and affecting the light transmittance of the non-light-emitting region 103 when the photosensitive member is in operation. The first electrode layer 31 may include at least one of the following conductive materials: metals, Indium Tin Oxides (ITO), and the like. The first electrode layer 31 may include a titanium aluminum titanium (TiAlTi) metal layer or the like. The second electrode layer 33 can be a conductive layer with high transmittance, for example, a transparent electrode layer, so as to prevent the photosensitive member from blocking external light and affecting the light transmittance of the non-light-emitting region 103 when the photosensitive member is in operation. The second electrode layer 33 may include at least one of the following conductive materials: metals, Indium Tin Oxides (ITO), and the like. The second electrode layer 33 may include a titanium aluminum titanium (TiAlTi) metal layer or the like. The light transmittance of the light transmittance adjustable material layer 32 may be adjusted by controlling the voltages of the first electrode layer 31 and the second electrode layer 33 to adjust the light transmittance of the non-light emitting region 103 with adjustable light transmittance, so as to adjust the light transmittance of the light transmittance adjustable display region 101. When the different transmittance adjustable material layers 32 are in a black or transparent state, the voltage relationship between the corresponding first electrode layer 31 and the second electrode layer 33 may be different. Optionally, when the electric potentials of the first electrode layer 31 and the second electrode layer 33 opposite to the light transmittance adjustable material layer 32 are the same along the thickness direction Z of the display panel, the light transmittance adjustable material layer 32 is black; when the first electrode layer 31 and the second electrode layer 33 facing the light transmittance adjustable material layer 32 have different potentials in the thickness direction Z of the display panel, the light transmittance adjustable material layer 32 is in a transparent state. Optionally, along the thickness direction Z of the display panel, when the potentials of the first electrode layer 31 and the second electrode layer 33 opposite to the light transmittance adjustable material layer 32 are different, the light transmittance adjustable material layer 32 is black; when the potentials of the first electrode layer 31 and the second electrode layer 33 facing the light transmittance adjustable material layer 32 are the same in the thickness direction Z of the display panel, the light transmittance adjustable material layer 32 is in a transparent state.
Optionally, on the basis of the above embodiment, with reference to fig. 5, the first electrode layer 31 or the second electrode layer 33 is reused as the touch layer 50.
Touch operation can be achieved through the touch layer 50. Optionally, the touch layer 50 is a self-capacitance touch layer or a mutual capacitance touch layer. The first electrode layer 31 or the second electrode layer 33 can be reused as at least a part of the touch electrode of the touch layer 50. Fig. 5 exemplarily shows that the light transmittance adjustable material layer 32 is located between the touch layer 50 and the substrate 10, which corresponds to the case that the electrode layer far from the substrate of the first electrode layer 31 and the second electrode layer 33 is reused as the touch layer 50. One of the first electrode layer 31 and the second electrode layer 33 is multiplexed as the touch layer 50, that is, an electrode sharing mechanism is adopted, so that the complexity of the wires can be reduced, the signal crosstalk between the wires can be reduced, the Mask (Mask) number can be reduced, and the cost can be saved. The electrode layer not used as the touch layer 50 in the first electrode layer 31 and the second electrode layer 33 may be a whole surface electrode, or a plurality of spaced electrodes may be formed by patterning, and may be disposed according to needs, which is not limited in the embodiment of the present invention.
Optionally, on the basis of the foregoing embodiment, fig. 6 is a schematic partial cross-sectional structure view of another light transmittance adjustable display region along the direction A1a2 provided in the embodiment of the present invention, where the touch layer 50 is located between the light transmittance adjustable material layer 32 and the substrate 10, which is equivalent to reusing an electrode layer close to the substrate 10 in the first electrode layer 31 and the second electrode layer 33 as the touch layer 50.
Optionally, fig. 7 is a schematic top view structure diagram of a self-contained touch layer according to an embodiment of the present invention, where the self-contained touch layer may include a plurality of touch electrode blocks 51 arranged in an array.
Optionally, fig. 8 is a schematic top view structure diagram of a mutual capacitance type touch layer according to an embodiment of the present invention, where the mutual capacitance type touch layer 50 may include a plurality of second touch electrodes 502 extending along the first direction X and arranged along the second direction Y, and a plurality of third touch electrodes 503 extending along the second direction Y and arranged along the first direction X. An insulating layer and a bridging conductive layer may be disposed at the intersection of the second touch electrodes 502 and the third touch electrodes 503 to achieve an insulating intersection. The second touch electrode 502 can be a touch driving electrode, and the third touch electrode 503 can be a touch sensing electrode; the second touch electrode 502 can be a touch sensing electrode, and the third touch electrode 503 can be a touch driving electrode.
Optionally, on the basis of the foregoing embodiment, with reference to fig. 6, the touch layer 50 is located between the light transmittance adjustable material layer 32 and the substrate 10, and the light transmittance adjustable material layer 32 includes a water blocking material layer.
At least part of the film layer in the light transmittance adjustable material layer 32 is set to be a water blocking material, so that the touch layer 50 can be protected, the conductive material in the touch layer 50 is prevented from being corroded by external water vapor, meanwhile, the thickness of the screen body can be reduced, and the situation that the thickness of the screen body is increased due to the additional arrangement of a protective layer is avoided.
Alternatively, on the basis of the foregoing embodiment, fig. 9 is a schematic partial cross-sectional structure diagram of another light transmittance adjustable display region along the direction A1a2 according to an embodiment of the present invention, where the light transmittance adjustable material layer 32 includes an ion storage layer 321 and an electrochromic layer 322 stacked along the thickness direction Z of the display panel, and the ion storage layer 321 includes at least one of the following water blocking materials: prussian blue, prussian blue derivatives, FeNiHCF and FeHCF.
The ion storage layer 321 covers the light emitting region 102 and the non-light emitting region 103 to protect the conductive material in the touch layer 50 to the maximum extent, so as to prevent the conductive material in the touch layer 50 from being corroded by external water vapor. The electrochromic layer 322 may be located within the non-light emitting region 103, not covering the light emitting region 102. The light transmittance of the electrochromic layer 322 can be adjusted by controlling the voltages of the first electrode layer 31 and the second electrode layer 33, thereby adjusting the light transmittance of the non-light emitting region 103 whose light transmittance is adjustable. The color film layer 40 and the electrochromic layer 322 may not overlap in the thickness direction Z of the display panel. The electrochromic layer 322 may include: a thiophene electrochromic material layer, a pyrrole electrochromic material layer, an aniline electrochromic material layer, or the like.
Optionally, on the basis of the above embodiment, with continuing reference to fig. 5, fig. 6, or fig. 9, the color film layer 40 is located between the first electrode layer 31 and the second electrode layer 33, and at least a portion of the color film layer 40 is embedded in the light transmittance adjustable material layer 32.
The color film layer 40 is embedded into the light transmittance adjustable material layer 32, so that the color film layer 40 and part of the film layers in the light transmittance adjustable material layer 32 are arranged on the same layer, and the thickness of the screen body can be reduced.
Optionally, on the basis of the above embodiment, with continuing reference to fig. 9, the ion storage layer 321 covers at least the non-light emitting region 103 with adjustable light transmittance, the electrochromic layer 322 is located in the non-light emitting region 103 with adjustable light transmittance, the color film layer 40 is located in the light emitting region 102, and at least a portion of the color film layer 40 is embedded in the ion storage layer 321 and/or the electrochromic layer 322.
Fig. 9 exemplarily shows that the color film layer 40 is embedded in the electrochromic layer 322, which corresponds to the case that the color film layer 40 and the electrochromic layer 322 are disposed at the same layer.
Alternatively, fig. 10 is a schematic partial cross-sectional view of another light transmittance adjustable display region along a direction A1a2 according to an embodiment of the present invention, wherein a color film layer 40 is embedded in the ion storage layer 321 and the electrochromic layer 322.
Alternatively, on the basis of the above embodiment, with continued reference to fig. 9 or fig. 10, the ion storage layer 321 is located between the touch layer 50 and the electrochromic layer 322.
Optionally, on the basis of the foregoing embodiment, fig. 11 is a schematic partial cross-sectional structure of another light transmittance adjustable display area along the direction A1a2 according to an embodiment of the present invention, and the electrochromic layer 322 is located between the touch layer 50 and the ion storage layer 321.
Alternatively, when the potentials of the first electrode layer 31 and the second electrode layer 33 opposite to the electrochromic layer 322 are the same in the thickness direction Z of the display panel, the electrochromic layer 322 is black; when the first electrode layer 31 and the second electrode layer 33 facing the electrochromic layer 322 have different potentials in the thickness direction Z of the display panel, the electrochromic layer 322 is in a transparent state. When the first electrode layer 31 and the second electrode layer 33 have different potentials, the electrochromic layer 322 reacts with holes or electrons, ions discharged from the electrochromic layer 322 enter the ion storage layer 321, and the electrochromic layer 322 is changed from black to transparent, so that the transmittance is improved, and the device is suitable for being used under screens of cameras and other optical sensors. Alternatively, when the potentials of the first electrode layer 31 and the second electrode layer 33 opposite to the electrochromic layer 322 are different in the thickness direction Z of the display panel, the electrochromic layer 322 is black; the electrochromic layer 322 is in a transparent state when the electric phases of the first electrode layer 31 and the second electrode layer 33 facing the electrochromic layer 322 are the same in the thickness direction Z of the display panel.
Optionally, as shown in fig. 7 and fig. 9, the first electrode layer 31 or the second electrode layer 33 is reused as the touch electrode block 501 of the self-capacitance touch layer 50. The electrode layer not multiplexed as the self-capacitance touch layer 50 in the first electrode layer 31 and the second electrode layer 33 may be patterned, for example, a plurality of first electrode blocks (not shown) may be formed at intervals, and the first electrode blocks may correspond to the touch electrode blocks 501 one to one. Along the thickness direction Z of the display panel, the overlapping portion of the corresponding first electrode block and the touch electrode block 501 covers the non-light-emitting region 103, and is provided with the electrochromic layer 322, and the light transmittance of the electrochromic layer 322 is adjusted by controlling the voltage of the first electrode block and the touch electrode block 501, so as to adjust the light transmittance of the non-light-emitting region 103 with adjustable light transmittance, and adjust the light transmittance of the light transmittance adjustable display region 101. When the self-capacitance touch layer 50 operates, a driving signal is periodically applied to each touch electrode block 501, the voltages of the touch electrode blocks 501 to which the driving signal is applied are different from those of the touch electrode blocks 501 to which the driving signal is not applied, and the voltage of the first electrode block corresponding to the touch electrode block 501 can be adjusted according to the change of the voltage of the touch electrode block 501, so that the electrochromic layer 322 is black.
Optionally, as shown in fig. 8 and fig. 9, the first electrode layer 31 or the second electrode layer 33 is reused as a touch driving electrode of the mutual capacitance type touch layer 50. When the mutual capacitance type touch layer 50 works, driving signals are applied to the touch driving electrodes one by one, and the touch position is determined according to sensing signals of the touch sensing electrodes. The electrode layer not multiplexed as the mutual capacitance touch layer 50 in the first electrode layer 31 and the second electrode layer 33 may be patterned, for example, a plurality of second electrodes (not shown) may be formed at intervals, and the second electrodes may correspond to the touch driving electrodes one to one. Along the thickness direction Z of the display panel, the corresponding overlapping portion of the second electrode and the touch driving electrode covers the non-light-emitting region 103, and is provided with an electrochromic layer 322, and the light transmittance of the electrochromic layer 322 is adjusted by controlling the voltage of the second electrode and the touch driving electrode, so as to adjust the light transmittance of the non-light-emitting region 103 with adjustable light transmittance, and adjust the light transmittance of the light transmittance adjustable display region 101. Optionally, the second touch electrode 502 is a touch driving electrode. The electrochromic layer 322 may not overlap the touch sensing electrode in the thickness direction Z of the display panel. When the mutual capacitance type touch layer 50 operates, the driving signals are applied to the touch driving electrodes one by one, the voltages of the touch driving electrodes to which the driving signals are applied are different from those of the touch driving electrodes to which the driving signals are not applied, and the voltage of the second electrode corresponding to the touch driving electrode is adjusted according to the change of the voltage of the touch driving electrode, so that the electrochromic layer 322 is black.
Optionally, on the basis of the foregoing embodiment, with reference to fig. 8, the touch layer 50 is a mutual capacitive touch layer, and the light transmittance adjustable material layer 32 covers at least a part of the touch sensing electrodes of the touch layer 50; of the first electrode layer 31 and the second electrode layer 33, the electrode layer not reused as the touch layer 50 is a transparent electrode on the whole surface, that is, the electrode layer continuously covers the light emitting region 102 and the non-light emitting region 103. The electrochromic layer 322 may not overlap the touch driving electrode in the thickness direction Z of the display panel. The light transmittance of the electrochromic layer 322 is adjusted by controlling the voltage of the entire transparent electrode and the touch sensing electrode, so as to adjust the light transmittance of the non-light emitting region 103 with adjustable light transmittance, and adjust the light transmittance of the display region 101 with adjustable light transmittance. Multiplexing first electrode layer 31 or second electrode layer 33 as the touch-control response electrode of mutual capacitance formula touch-control layer 50 to conveniently make the electrode layer that does not multiplex as touch-control layer 50 set up to whole transparent electrode, in order to reduce the complexity of walking the line, reduce the technology preparation degree of difficulty, and avoid this electrode layer to shelter from the condition emergence of the light that emitting device layer sent, also can avoid the photosensitive part during operation, shelter from external light, the condition emergence of the luminousness of influence non-light emitting zone 103. Optionally, the second touch electrode 502 is a touch sensing electrode. When the mutual capacitance type touch layer 50 works, driving signals are applied to the touch driving electrodes one by one, if a user does not touch the screen body, the electric potentials of all the touch sensing electrodes are the same, and the voltage of the whole transparent electrode can be set according to the voltage of the touch sensing electrodes, so that the electrochromic layer 322 is black; if a user touches the screen body, the potential of the touch sensing electrode at the touch position changes due to touch, the voltage of the touch sensing electrodes at the other positions does not change, and the voltage of the whole transparent electrode is set according to the voltage of the touch sensing electrode at the non-touch position, so that the electrochromic layer 322 is black, and the display effect is not affected even if the electrochromic layer 322 at the touch position is not black due to the touch position being blocked by fingers.
Optionally, on the basis of the foregoing embodiment, fig. 12 is a schematic partial cross-sectional structure diagram of another light transmittance adjustable display area provided in the embodiment of the present invention, where the display panel further includes a driving array layer 60 located between the substrate 10 and the light emitting device layer 20. The driving array layer 60 can be used to form a plurality of pixel driving circuits (any pixel driving circuit includes a thin film transistor such as a driving transistor and a switching transistor, and a storage capacitor, etc.), a scanning driving circuit, a data driving circuit, a light emitting control circuit, a scanning line, a data line, a light emitting control line, and a power line, etc. which are distributed in an array. The driving array layer 60 can be formed by Low Temperature Polysilicon (LTPS) technology.
Optionally, on the basis of the above embodiment, with reference to fig. 12, the electrode layer not used as a touch layer in the first electrode layer 31 and the second electrode layer 33 is electrically connected to the signal line in the driving array layer 60 through the via 331. The via hole 331 may penetrate through each of the first electrode layer 31 and the second electrode layer 33, which are not reused as the touch layer 50, and the insulating layer between the driving array layer 60.
Optionally, on the basis of the foregoing embodiment, fig. 13 is a schematic partial cross-sectional structure diagram of another display area with adjustable light transmittance provided in the embodiment of the present invention, and an electrode layer, which is not reused as the touch layer 50, of the first electrode layer 31 and the second electrode layer 33 may be electrically connected to a signal line in the driving array layer 60 in a side routing manner.
Fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Fig. 14 exemplarily shows a case where a part of the display region of the display panel is a light transmittance adjustable display region and the light transmittance of the remaining display region is not adjustable.
Optionally, on the basis of the foregoing embodiment, with continued reference to fig. 12 or fig. 13, the display panel further includes a thin film encapsulation layer 70, where the thin film encapsulation layer 70 is located between the light emitting device layer 20 and the color film layer 40, and the thin film encapsulation layer 70 is located between the light emitting device layer 20 and the functional layer 30 with adjustable light transmittance. The thin film encapsulation layer 70 is positioned between the light emitting device layer 20 and the touch layer 50. The thin film encapsulation layer 70 may include at least one organic layer and at least one inorganic layer alternately stacked in a thickness direction of the display panel. The thin film encapsulation layer 70 can prevent external water and oxygen from invading, which leads to the light emitting material in the light emitting device layer being oxidized and losing efficacy.
Optionally, on the basis of the foregoing embodiment, with reference to fig. 12 or fig. 13, the mutual capacitance type touch layer 50 includes a bridging conductive layer 51, an insulating layer 52, and an electrode layer, which is reused as the mutual capacitance type touch layer 50, of the first electrode layer 31 and the second electrode layer 33, which are sequentially stacked in the thickness direction of the display panel. The bridging conductive layer 51 and the insulating layer 52 may be located on a side of the first electrode layer 31 and the second electrode layer 33, which is reused as the mutual capacitance touch layer 50, away from the transmittance adjustable material layer 32. As shown in fig. 8, 12 and 13, fig. 8 exemplarily shows that a part of the third touch electrode 503 is located in the first electrode layer 31 and the second electrode layer 33 and is reused as an electrode layer of the mutual capacitance touch layer 50, and another part is located in the bridging conductive layer 51, and the two parts are electrically connected through a via penetrating through the insulating layer 52; the second touch electrode 502 is only located in the case where the first electrode layer 31 and the second electrode layer 33 are reused as the electrode layer of the mutual capacitance touch layer 50.
The embodiment of the invention provides a display device. Fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention. On the basis of the above-described embodiments, the display device 1 includes the display panel provided in any of the embodiments of the present invention, and the photosensitive member 200 disposed below the light transmittance adjustable display region 101, and the light transmittance adjustable functional layer is configured to be in a transparent state when the photosensitive member 200 is operated.
Wherein, the display device 1 may include: mobile phones, tablet computers, notebook computers, wearable devices, and the like. The photosensitive member 200 may include at least one of: a camera photosensitive member or a fingerprint recognition sensor, etc. The photosensitive member 200 may be used to collect light transmitted through the light transmittance adjustable display region 101. The photosensitive member 200 may be located on a side of the substrate 10 away from the light-emitting device layer 20. The display device provided by the embodiment of the present invention includes the display panel in the above embodiments, and therefore, the display device provided by the embodiment of the present invention also has the beneficial effects described in the above embodiments, and details are not repeated herein.
Optionally, the touch layer 50 and the photosensitive member 200 operate in a time-sharing manner. When the touch layer 50 is operated, the photosensitive member 200 is not operated. When the photosensitive member 200 operates, the touch layer 50 does not operate. Fig. 16 is a signal waveform diagram according to an embodiment of the present invention. S1 represents the voltage of the first electrode layer 31 and the second electrode layer 33 not multiplexed as the touch sensing electrode of the touch layer 50, and S2 represents the voltage of the first electrode layer 31 and the second electrode layer 33 multiplexed as the touch sensing electrode of the touch layer 50. T1 represents the touch layer 50 on-time period. T2 denotes the photosensitive member 200 operation period. When the light emitting device layer 20 emits light, the touch layer 50 may be in an operating state. Alternatively, the potential of the electrode layer not multiplexed as the touch layer 50 in the first electrode layer 31 and the second electrode layer 33 when the touch layer 50 operates may be equal to the potential of the electrode layer not multiplexed as the touch layer 50 in the first electrode layer 31 and the second electrode layer 33 when the photosensitive member 200 operates. Optionally, in the first electrode layer 31 and the second electrode layer 33, the potential of the electrode layer not multiplexed as the touch layer 50 remains unchanged, that is, the electrode layer not multiplexed as the touch layer 50 may be electrically connected to a constant potential signal line. Alternatively, when the light emitting device layer 20 emits light, the potential of the electrode layer not multiplexed as the touch layer 50 in the first electrode layer 31 and the second electrode layer 33 may be equal to the potential of the electrode layer not multiplexed as the touch layer 50 in the first electrode layer 31 and the second electrode layer 33 when the photosensitive member 200 operates.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A display panel, comprising: the light-emitting device comprises a substrate, and a light-emitting device layer, a light transmittance adjustable functional layer and a color film layer which are positioned on the substrate;
the display panel is provided with a display area with adjustable light transmittance, the display area with adjustable light transmittance comprises a plurality of light emitting areas arranged at intervals and non-light emitting areas with adjustable light transmittance positioned between the light emitting areas, and the light emitting device layer covers the light emitting areas; the color film layer covers the light emitting area; the light transmittance adjustable functional layer covers the light transmittance adjustable non-luminous area; the color film layer is positioned on the light-emitting side of the light-emitting device layer.
2. The display panel according to claim 1, wherein the functional layer with adjustable light transmittance is configured to be black when the light emitting device layer emits light.
3. The display panel according to claim 1, wherein the light transmittance adjustable functional layer comprises a first electrode layer, a light transmittance adjustable material layer, and a second electrode layer, which are sequentially stacked in a thickness direction of the display panel;
the first electrode layer or the second electrode layer is reused as a touch layer.
4. The display panel of claim 3, wherein the touch layer is located between the light transmittance adjustable material layer and the substrate, and the light transmittance adjustable material layer comprises a water blocking material layer.
5. The display panel according to claim 4, wherein the light transmittance adjustable material layer comprises an ion storage layer and an electrochromic layer which are stacked in a thickness direction of the display panel, and the ion storage layer comprises at least one of the following water blocking materials: prussian blue, prussian blue derivatives, FeNiHCF and FeHCF.
6. The display panel of claim 5, wherein the color film layer is disposed between the first electrode layer and the second electrode layer, and at least a portion of the color film layer is embedded in the light transmittance adjustable material layer.
7. The display panel according to claim 6, wherein the ion storage layer covers at least the non-light emitting region with adjustable light transmittance, the electrochromic layer is located in the non-light emitting region with adjustable light transmittance, the color film layer is located in the light emitting region, at least a portion of the color film layer is embedded in the ion storage layer and/or the electrochromic layer, and the ion storage layer is located between the touch layer and the electrochromic layer.
8. The display panel of claim 3, wherein the touch layer is a self-contained touch layer or a mutual-contained touch layer.
9. The display panel according to claim 3, wherein the touch layer is a mutual capacitance touch layer, and the light transmittance adjustable material layer covers at least a part of the touch sensing electrodes of the touch layer;
among the first electrode layer and the second electrode layer, the electrode layer which is not reused as the touch layer is a whole transparent electrode.
10. A display device comprising the display panel according to any one of claims 1 to 9, and a photosensitive member disposed below the light transmittance adjustable display region, the light transmittance adjustable functional layer being configured to be in a transparent state when the photosensitive member is in operation.
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