Display device

Abstract

The application provides a display device, which comprises a display panel and a driving circuit. The display panel comprises a substrate, a pixel definition layer and a light-emitting layer, an encapsulation layer, a plurality of light-blocking layers and a plurality of color resistance layers, a light-emitting component and an insulating layer and a sensing layer which are sequentially stacked. When the display panel is deformed due to external force, the sensing layer generates impedance change. When the driving circuit detects the impedance change, the driving circuit outputs an electric signal to control the light-emitting component to emit ultraviolet light. When the light-blocking layer receives the ultraviolet light, the light-blocking layer is deformed or recovers from the deformation. The light-blocking layer is deformed synchronously with the light-emitting layer. The light-blocking layer and the light-emitting layer maintain relative positions and do not have layer misalignment. The display device avoids color crosstalk and uneven brightness and improves the display effect of the display panel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a display device. BACKGROUND

[0002] The COE (Color film on Encapsulation) technology forms a color film layer on the thin film encapsulation, significantly reduces the reflection of ambient light, and makes the mobile phone screen still clear and readable under sunlight. Compared with the traditional polarizer, this technology not only effectively improves the display effect, but also reduces the weight of the device to a certain extent, avoiding the influence of thickness increase on the foldable design.

[0003] Among them, the stretchable display panel adopting the COE technology will cause interlayer misregistration due to the difference in elastic modulus between the color resistance layer and the light emitting layer when deforming, causing color crosstalk, uneven brightness and other problems. SUMMARY

[0004] The purpose of the present application is to provide a display device, aiming to solve the problem of interlayer misregistration of the traditional display panel when stretched and deformed.

[0005] The first aspect of the embodiment of the present application proposes a display device, comprising a display panel and a driving circuit;

[0006] The display panel comprises:

[0007] a substrate;

[0008] a plurality of pixel definition layers and a light emitting layer, the pixel definition layers and the light emitting layer are staggered and stacked on the substrate along a first direction, the first direction being the extension direction of the substrate;

[0009] an encapsulation layer stacked on the pixel definition layer and the light emitting layer;

[0010] a plurality of light shielding layers and a plurality of color resistance layers, the light shielding layers and the color resistance layers are staggered and stacked on the encapsulation layer along the first direction, each light shielding layer corresponds to a pixel definition layer, each light emitting layer corresponds to a light emitting layer, and the light shielding layer deforms or recovers when receiving ultraviolet light;

[0011] a plurality of light emitting components stacked on the light shielding layer, the light emitting components emit ultraviolet light when receiving an electrical signal;

[0012] an insulating layer stacked on a plurality of the light emitting components;

[0013] a sensing layer stacked on the insulating layer, the sensing layer deforms and changes impedance when receiving an external force or when the external force is removed;

[0014] The driving circuit is connected with the light-emitting component and the sensing layer respectively, and is configured to output the electrical signal to the light-emitting component when detecting the impedance change of the sensing layer.

[0015] Optionally, the light-emitting component comprises a first electrode, a second electrode and an ultraviolet light-emitting diode connected with the first electrode and the second electrode, and the first electrode and the second electrode are further connected with the driving circuit.

[0016] The first electrode, the second electrode and the light-shielding layer form a containing cavity, and the ultraviolet light-emitting diode is accommodated in the containing cavity.

[0017] Optionally, an opening is arranged on the side of the containing cavity facing the insulating layer, and the display panel further comprises:

[0018] A plurality of light isolation layers, each of which is laminated on the light-emitting component and covers the opening.

[0019] Optionally, the light-shielding layer is composed of acrylate liquid crystal monomers, photosensitive cross-linking agents and carbon black nanoparticles, the photosensitive cross-linking agents trigger cross-linking reaction and control the reorganization deformation of the acrylate liquid crystal monomers when receiving the ultraviolet light.

[0020] Optionally, the sensing layer comprises one metal network or a plurality of arrayed metal networks, and each of the metal networks is connected with the driving circuit.

[0021] Each of the metal networks comprises a plurality of metal meshes.

[0022] Optionally, the display panel is sequentially divided into a central region, a transition region and an edge region from the center to the periphery, and the central region, the transition region and the edge region are respectively provided with a plurality of arrayed metal networks.

[0023] The driving circuit is configured to output the electrical signal to the light-emitting component in the corresponding region when detecting the impedance change of the metal network in the corresponding region.

[0024] Optionally, the size of the metal mesh in the central region, the transition region and the edge region decreases sequentially.

[0025] The sensing layer comprises one metal mesh or a plurality of arrayed metal meshes, and each of the metal meshes is connected with the driving circuit.

[0026] Optionally, the display panel is sequentially divided into a central region, a transition region and an edge region from the center to the periphery, and the central region, the transition region and the edge region are respectively provided with a plurality of arrayed metal networks.

[0027] The driving circuit is configured to output the electrical signal to the light-emitting component of the corresponding area when the impedance change of the sensing layer of the corresponding area is detected.

[0028] Optionally, the size of the metal mesh of the center area, the transition area and the edge area decreases in turn.

[0029] Optionally, the proportion of the photosensitive crosslinking agent in the light-shielding layer of the center area is greater than the proportion of the photosensitive crosslinking agent in the light-shielding layer of the transition area.

[0030] The proportion of the photosensitive crosslinking agent in the light-shielding layer of the transition area is greater than the proportion of the photosensitive crosslinking agent in the light-shielding layer of the edge area.

[0031] Optionally, the light-shielding layer further comprises a repair capsule, the repair capsule comprising a shell and a repair liquid contained in the shell, the repair liquid being a disulfide bond repair liquid.

[0032] When the display panel is stretched and damaged, the shell of the repair capsule breaks and releases the repair liquid, and the repair liquid repairs the stress change characteristic of the light-shielding layer.

[0033] The proportion of the repair capsule in the light-shielding layer of the center area is less than the proportion of the repair capsule in the light-shielding layer of the transition area.

[0034] The proportion of the repair capsule in the light-shielding layer of the transition area is less than the proportion of the repair capsule in the light-shielding layer of the edge area.

[0035] Optionally, the driving circuit comprises:

[0036] A signal processor connected with the sensing layer, configured to output a corresponding sensing signal when the impedance change of the sensing layer is detected.

[0037] A signal controller connected with the signal processor and the light-emitting component, configured to output the electrical signal to the light-emitting component when the sensing signal is received.

[0038] Compared with the prior art, the display device provided by the embodiment of the present application has the beneficial effects that: the display device comprises a display panel and a driving circuit, the display panel comprises a substrate, a pixel definition layer and a light-emitting layer, an encapsulation layer, a plurality of light-blocking layers and a plurality of color resistance layers, a light-emitting assembly, an insulating layer and a sensing layer which are sequentially stacked, the light-emitting assembly is stacked on the light-blocking layer, when the display panel receives an external force and is deformed, the sensing layer generates impedance change, when the driving circuit detects the impedance change, an electric signal is output to control the light-emitting assembly to emit ultraviolet light, the light-blocking layer is deformed or recovers the deformation when receiving the ultraviolet light, so that the light-blocking layer is deformed synchronously with the light-emitting layer, the light-blocking layer and the light-emitting layer maintain the relative position and there is no interlayer misregistration, color crosstalk and uneven brightness are avoided, and the display effect of the display panel is improved. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 FIG. 1 is a structural schematic diagram of a traditional display panel;

[0040] Figure 2 FIG. 2 is a tensile deformation schematic diagram of the traditional display panel;

[0041] Figure 3 FIG. 3 is a first structural schematic diagram of a display panel provided by the embodiment one of the present application;

[0042] Figure 4 FIG. 4 is a first structural schematic diagram of a display device provided by the embodiment one of the present application;

[0043] Figure 5 FIG. 5 is a tensile deformation schematic diagram of the display panel provided by the embodiment one of the present application;

[0044] Figure 6 FIG. 6 is a structural schematic diagram of a light-blocking layer and a light-emitting assembly provided by the embodiment one of the present application;

[0045] Figure 7 FIG. 7 is a second structural schematic diagram of the display device provided by the embodiment one of the present application;

[0046] Figure 8 FIG. 8 is a third structural schematic diagram of the display device provided by the embodiment one of the present application;

[0047] Figure 9 FIG. 9 is a fourth structural schematic diagram of the display device provided by the embodiment one of the present application;

[0048] Figure 10 FIG. 10 is a circuit schematic diagram of a signal processing circuit provided by the embodiment one of the present application;

[0049] Figure 11 FIG. 11 is a first structural schematic diagram of a sensing layer provided by the embodiment two of the present application;

[0050] Figure 12The second structural schematic diagram of the sensing layer provided for the embodiment one and the embodiment two of the present application;

[0051] Figure 13 The third structural schematic diagram of the sensing layer provided for the embodiment two of the present application;

[0052] Figure 14 The fourth structural schematic diagram of the sensing layer provided for the embodiment two of the present application;

[0053] Figure 15 The structural schematic diagram of the light shielding layer provided for the embodiment three of the present application;

[0054] Figure 16 The structural schematic diagram of the repair capsule provided for the embodiment three of the present application.

[0055] In the drawings, various reference numerals are used throughout the drawings.

[0056] 100, display panel; 200, driving circuit; 110, center area; 120, transition area; 130, edge area; 210, signal processor; 220, signal controller; 211, signal processing circuit; 212, analog-digital conversion circuit; 221, processor; 222, PWM driving circuit; 223, constant current driving circuit; 11, substrate; 12, pixel definition layer; 13, light emitting layer; 14, packaging layer; 15, light shielding layer; 16, color resistance layer; 17, functional layer; 18, light emitting component; 19, insulating layer; 20, sensing layer; 181, first electrode; 182, second electrode; 183, ultraviolet light emitting diode; 184, opening; 21, metal network; 22, light isolation layer; 201, metal grid; 101, first electrode segment; 102, second electrode segment; 103, third electrode segment; 104, fourth electrode segment; 151, repair capsule; 152, shell; 153, repair liquid;

[0057] R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; R6, sixth resistor; C1, capacitor; U1, operational amplifier. DETAILED DESCRIPTION

[0058] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly understood, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0059] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0061] As shown in Figure 1 The stretchable display panel 100 using the COE technology includes a substrate 11, an OLED light-emitting layer, an encapsulation layer 14 and a color film layer which are sequentially stacked, and the display panel 100 can further include a functional layer 17 stacked on the color film layer, the functional layer 17 can be a touch layer, a capacitive sensing layer, etc., the OLED light-emitting layer includes pixel definition layers 12 and light-emitting layers 13 which are staggered along the extension direction of the substrate 11, the light-emitting layer 13 emits light when receiving a current signal, the color film layer includes color resistance layers 16 and light shielding layers 15 which are staggered along the extension direction of the substrate 11, the light shielding layer 15 can be a black matrix, the color resistance layer 16 can be a red color resistance layer, a blue color resistance layer and a green color resistance layer, etc., the light-emitting layer 13 and the color resistance layer 16 which are oppositely arranged form a pixel unit, the light emitted by the light-emitting layer 13 passes through the color resistance layer 16 to present light of a corresponding color, and different colors of light are combined to form a corresponding image.

[0062] As shown in Figure 2 When the display panel 100 is stretched transversely, due to the difference in elastic modulus between the color resistance layer 16 and the light-emitting layer 13, an interlayer misregistration occurs between the light-emitting layer 13 and the color resistance layer 16, the light-emitting layer 13 and the color resistance layer 16 are no longer in the overlapping position, and the light-emitting layer 13 can overlap with the light shielding layer 15, causing color crosstalk, uneven brightness and other problems.

[0063] In order to solve the problem of interlayer misregistration, a conventional solution is to increase the adhesive layer or mechanical anchor point to make the color resistance layer 16 and the light-emitting layer 13 deform synchronously, but when the adhesive layer or mechanical anchor point is increased, the flexibility and light transmittance of the display panel 100 will be reduced.

[0064] In order to solve the problem of interlayer misregistration when the display panel 100 is stretched, in the present embodiment, the first aspect of the present embodiment proposes a display device, as shown inFigure 3 and Figure 4 As shown in FIG. 1, the display device includes a display panel 100 and a driving circuit 200, and the display panel 100 is connected with the driving circuit 200.

[0065] The display panel 100 includes:

[0066] a substrate 11;

[0067] a plurality of pixel definition layers 12 and a plurality of light emitting layers 13, the pixel definition layers 12 and the light emitting layers 13 are alternately and sequentially stacked on the substrate 11 along a first direction, the first direction being an extending direction of the substrate 11;

[0068] an encapsulation layer 14, stacked on the pixel definition layers 12 and the light emitting layers 13;

[0069] a plurality of light shielding layers 15 and a plurality of color resistance layers 16, the light shielding layers 15 and the color resistance layers 16 are alternately and sequentially stacked on the encapsulation layer 14, each of the light shielding layers 15 is arranged corresponding to one of the pixel definition layers 12, each of the light emitting layers 13 is arranged corresponding to one of the light emitting layers 13, and the light shielding layer 15 is deformed or restores the deformation when receiving ultraviolet light;

[0070] a plurality of light emitting components 18, stacked on the light shielding layers 15, the light emitting components 18 emit ultraviolet light when receiving an electric signal;

[0071] an insulating layer 19, stacked on the plurality of light emitting components 18;

[0072] a sensing layer 20, stacked on the insulating layer 19, the sensing layer 20 generates deformation and impedance change when receiving an external force or when the external force is removed;

[0073] the driving circuit 200 is connected with the light emitting components 18 and the sensing layer 20 respectively, and the driving circuit 200 is configured to output the electric signal to the light emitting components 18 when detecting the impedance change of the sensing layer 20.

[0074] In the embodiment, the display panel 100 includes the substrate 11, the OLED light emitting layer, the encapsulation layer 14, the color film layer, the light emitting component 18, the insulating layer 19 and the sensing layer 20 which are sequentially stacked along a second direction, the display panel 100 can further include a functional layer 17 stacked on the sensing layer 20, the functional layer 17 can be a touch layer, a capacitive sensing layer, etc., the second direction being a stacking direction of the display panel 100, and the first direction and the second direction intersecting.

[0075] The OLED light-emitting layer includes pixel definition layers 12 and light-emitting layers 13 staggered along the extension direction of the substrate 11. In the display panel 100, corresponding electrode layers can also be arranged between the substrate 11 and the encapsulation layer 14. The electrode layers include positive electrodes and negative electrodes, which can be connected to the light-emitting layer 13. The positive electrodes and negative electrodes can also be connected to the driving circuit 200. The driving circuit 200 outputs current signals to the positive electrodes and negative electrodes. The light-emitting layer 13 emits light when receiving the current signals.

[0076] The color film layer includes color resistance layers 16 and light-blocking layers 15 staggered along the extension direction of the substrate 11. The light-blocking layer 15 is composed of corresponding liquid crystal monomers, photosensitive materials, and light-blocking materials. The light-blocking materials provide light-blocking properties and enhance mechanical strength. The photosensitive materials trigger a photosensitive reaction when receiving ultraviolet light and control the liquid crystal monomers to change from a crystal-like state to a colloid-like state, causing the light-blocking layer 15 to deform or recover from deformation. The color resistance layer 16 can be red color resistance, blue color resistance, and green color resistance, etc.

[0077] When the display panel 100 does not receive external force and does not stretch, the light-blocking layer 15 is arranged relative to the pixel definition layer 12, and the color resistance layer 16 is arranged relative to the light-emitting layer 13. Along the first direction, i.e., the extension direction of the substrate 11, the light-blocking layer 15 has the same size as the pixel definition layer 12, and the color resistance layer 16 has the same size as the light-emitting layer 13. That is, the light-blocking layer 15 covers the pixel definition layer 12 at the corresponding position, and the color resistance layer 16 covers the light-emitting layer 13 at the corresponding position. The oppositely arranged light-emitting layer 13 and color resistance layer 16 form a pixel unit. The light emitted by the light-emitting layer 13 passes through the color resistance layer 16 to present light of a corresponding color. Different colors of light are combined to form a corresponding image.

[0078] The light-emitting assembly 18 emits ultraviolet light under electricity. The sensing layer 20 is laid on the insulating layer 19. The sensing layer 20 is a metal structure. To avoid signal crosstalk, short circuit, and other positions between the sensing layer 20 and the light-emitting assembly 18, an insulating layer 19 is arranged between the light-emitting assembly 18 and the sensing layer 20 to achieve signal isolation. The insulating layer 19 is in a transparent form. The insulating layer 19 can be made of a corresponding material. In an optional embodiment, the insulating layer 19 is polymethyl methacrylate.

[0079] When the display panel 100 is stretched by an external force, the sensing layer 20 undergoes topological deformation, for example Figure 12As shown, the impedance of the sensing layer 20 changes, the driving circuit 200 is connected with the sensing layer 20, the resistance change is fed back to the driving circuit 200, the driving circuit 200 detects the impedance change, and outputs an electric signal corresponding to the impedance change to the light-emitting component 18. The light-emitting component 18 is stacked on each light-blocking layer 15, the light-emitting component 18 generates ultraviolet light to the light-blocking layer 15, the light-blocking layer 15 changes from a crystalloid to a colloid state under the irradiation of the ultraviolet light, the light-blocking layer 15 deforms along with the color resist layer 16, and absorbs the deformation stress of the display panel 100, as shown in Figure 5 As shown, finally, the light-blocking layer 15, the color resist layer 16, and the light-emitting layer 13 deform synchronously, the color resist layer 16 is still arranged opposite to and covers the light-emitting layer 13, and the light emitted by the light-emitting layer 13 can all pass through the color resist layer 16 to be emitted, thereby avoiding color crosstalk, uneven brightness, and the like, and improving the display effect.

[0080] When the deformation of the display panel 100 reaches a stable state, the topological structure of the sensing layer 20 no longer changes, and the impedance thereof is stable. When the driving circuit 200 detects no continuous impedance change, the driving circuit 200 stops outputting the electric signal to the light-emitting component 18, and the light-emitting component 18 no longer emits ultraviolet light. At this time, the light-blocking layer 15 starts to reset and realizes rigid recovery, the light-blocking layer 15 changes from a colloid to a crystalloid state, and realizes the light-blocking effect.

[0081] When the external tensile stress is eliminated, the color resist layer 16 and the light-emitting layer 13 return to the initial state, the sensing layer 20 deforms topologically and causes impedance change, and the driving circuit 200 outputs the electric signal again when the impedance change is detected again. The light-emitting component 18 emits ultraviolet light again, the light-blocking layer 15 changes from a crystalloid to a colloid state under the irradiation of the ultraviolet light, the light-blocking layer 15 deforms along with the color resist layer 16, and adapts to the deformation recovery process of the display panel 100, as shown in Figure 5 As shown, finally, the light-blocking layer 15, the color resist layer 16, and the light-emitting layer 13 deform synchronously, the color resist layer 16, the light-blocking layer 15, and the light-emitting layer 13 return to the original state, the color resist layer 16 is still arranged opposite to and covers the light-emitting layer 13, and the light emitted by the light-emitting layer 13 can all pass through the color resist layer 16 to be emitted, thereby avoiding color crosstalk, uneven brightness, and the like, and improving the display effect.

[0082] The light-emitting component 18 can adopt a corresponding ultraviolet light-emitting diode 183, and the like. In an optional embodiment, as shown in Figure 3 and Figure 6 The light-emitting component 18 includes a first electrode 181, a second electrode 182, and an ultraviolet light-emitting diode 183 connected with the first electrode 181 and the second electrode 182, and the first electrode 181 and the second electrode 182 are further connected with the driving circuit 200.

[0083] The first electrode 181, the second electrode 182 and the light shielding layer 15 form a containing cavity, and the ultraviolet light emitting diode 183 is accommodated in the containing cavity.

[0084] In the embodiment, the first electrode 181 and the second electrode 182 have a bending structure, the first electrode 181 includes the first electrode segment 101 and the second electrode segment 102 connected together, the second electrode 182 includes the third electrode segment 103 and the fourth electrode segment 104, the first end of the first electrode segment 101 is laminated at the first edge position of the light shielding layer 15, the first end of the third electrode segment 103 is laminated at the second edge position of the light shielding layer 15, the second electrode segment 102 extends from the second end of the first electrode segment 101 in the first direction, the fourth electrode segment 104 extends from the second end of the third electrode segment 103 in the first direction, the first electrode 181 and the second electrode 182 form the containing cavity inside, and the ultraviolet light emitting diode 183 is accommodated in the containing cavity and connected with the first electrode 181 and the second electrode 182.

[0085] Meanwhile, the first electrode 181 and the second electrode 182 are also connected with the driving circuit 200, and transmit the electrical signal to the ultraviolet light emitting diode 183 when receiving the electrical signal, and the ultraviolet light emitting diode 183 emits ultraviolet light.

[0086] The number of the ultraviolet light emitting diodes 183 connected between the first electrode 181 and the second electrode 182 can be set according to requirements, and one or more ultraviolet light emitting diodes 183 can be set, and meanwhile, the ultraviolet light emitting diode 183 can be coated in a thin film form on the light shielding layer 15, and the specific form is not limited.

[0087] Further, in order to avoid heat accumulation of the ultraviolet light emitting diode 183 during work to cause damage to the light emitting component 18, the second electrode segment 102 and the fourth electrode segment 104 are not in contact, and the opening 184 is formed between the second electrode segment 102 and the fourth electrode segment 104, that is, in an optional embodiment, the containing cavity is provided with the opening 184 on the side facing the insulating layer 19, and the heat generated by the ultraviolet light emitting diode 183 can be conducted through the opening 184.

[0088] Based on this, when the opening 184 is set, the ultraviolet light also exists to be emitted to the outside through the insulating layer 19 and the sensing layer 20, in order to avoid damage to the human eye caused by the ultraviolet light, as shown in Figure 7 The display panel 100 further includes:

[0089] A plurality of light isolation layers 22, each of which is laminated on the light emitting component 18 and covers the opening 184.

[0090] In the embodiment, the light isolation layer 22 is used to block the ultraviolet light, prevent the ultraviolet light from being emitted to the outside through the opening 184, and prevent the light refraction of the first electrode 181 and the second electrode 182, so that the ultraviolet light is refracted to the outside. Further, the light isolation layer 22 is further stacked on the first electrode 181 and the second electrode 182. Specifically, the light isolation layer 22 is stacked on the second electrode segment 102, the fourth electrode segment 104 and the opening 184. The light isolation layer 22 further blocks the refraction of the ultraviolet light. The light isolation layer 22 can be a zinc oxide or titanium dioxide nano film, and the ultraviolet blocking rate is greater than 99%.

[0091] In order to further block the ultraviolet light, in an optional embodiment, the insulating layer 19 can also be used as a light isolation layer. The insulating layer 19 is made of transparent resin added with benzotriazole ultraviolet absorber. The visible light transmittance is greater than 90%, and the ultraviolet blocking rate is greater than 99.5%. The ultraviolet light can be further blocked.

[0092] The light shielding layer 15 can be composed of corresponding liquid crystal monomers, photosensitive materials, light shielding materials and the like. In an optional embodiment, the light shielding layer 15 is composed of acrylate liquid crystal monomers, photosensitive crosslinking agent and carbon black nanoparticles. The photosensitive crosslinking agent triggers crosslinking reaction when receiving ultraviolet light, and controls the reorganization and deformation of the acrylate liquid crystal monomers.

[0093] In the embodiment, the proportion of the acrylate liquid crystal monomers is the largest. The photosensitive crosslinking agent triggers crosslinking reaction under the irradiation of ultraviolet light, and controls the dynamic reorganization of the molecular chain of the acrylate liquid crystal monomers. The order degree of the acrylate liquid crystal monomers drops sharply, and the entanglement degree of the molecular chain increases. The material changes from a crystal-like state to a colloid-like state. When the display panel 100 deforms, the acrylate liquid crystal monomers deform synchronously with the color resist layer 16. Finally, the light shielding layer 15, the color resist layer 16 and the light emitting layer 13 deform synchronously with the light emitting layer 13. The color resist layer 16, the light shielding layer 15 and the light emitting layer 13 deform or recover.

[0094] The proportions of the acrylate liquid crystal monomers, the photosensitive crosslinking agent and the carbon black nanoparticles can be set according to the light shielding effect and the deformation effect. In an optional embodiment, the light shielding layer 15 is composed of 85-90% acrylate liquid crystal monomers, 3-5% photosensitive crosslinking agent and 5% carbon black nanoparticles.

[0095] The driving circuit 200 can be composed of corresponding signal processing units, control units and the like. In an optional embodiment, as shown in FIG. 10, the driving circuit 200 includes: Figure 8

[0096] The signal processor 210 is connected with the sensing layer 20, and is used to output a corresponding sensing signal when the impedance change of the sensing layer 20 is detected.

[0097] ​The signal controller 220 is connected with the signal processor 210 and the light-emitting component 18, and is configured to output an electric signal to the light-emitting component 18 when receiving the sensing signal.

[0098] In the embodiment, when the sensing layer 20 generates deformation or restores to the original state, the sensing layer 20 generates impedance change, which is converted into electric signal change fed back to the signal processor 210, so as to realize micro-strain detection, the signal processor 210 outputs the corresponding sensing signal, and the signal controller 220 determines that the display panel 100 generates tensile deformation when receiving the sensing signal, and outputs an electric signal to the first electrode 181 and the second electrode 182, and drives the ultraviolet light-emitting diode 183 to start working and emit ultraviolet light. Under the irradiation of the ultraviolet light, the light-shielding layer 15 changes from a crystalloid state to a colloid state, the light-shielding layer 15 extends along with the color resist layer 16, and adapts to the tensile deformation or deformation recovery process of the display panel 100.

[0099] The signal processor 210 can adopt corresponding processing circuit, conversion circuit, etc., and the signal controller 220 can adopt corresponding driving unit, processing unit, etc. In an optional embodiment, as shown in Figure 9 The signal processor 210 includes a signal processing circuit 211 and an analog-digital conversion circuit 212, and the signal controller 220 includes a processor 221, a PWM driving circuit 222 and a constant current driving circuit 223. The sensing layer 20, the signal processing circuit 211, the analog-digital conversion circuit 212, the processor 221, the PWM driving circuit 222, the constant current driving circuit 223 and the light-emitting component 18 are connected in sequence. When the impedance of the sensing layer 20 changes, the sensing layer 20 outputs a changed current signal to the signal processing circuit 211, the signal processing circuit 211 performs corresponding signal processing such as voltage division, current limiting and filtering, and transmits the processed voltage signal to the analog-digital conversion circuit 212, the analog-digital conversion circuit 212 performs analog-digital conversion and outputs a sensing signal, and the processor 221 outputs a control signal to the PWM driving circuit 222 when receiving the sensing signal, the PWM driving circuit 222 outputs a PWM signal with a corresponding duty ratio to the constant current driving circuit 223, the PWM signal controls the constant current driving circuit 223 to output a driving current to the first electrode 181 and the second electrode 182, so as to drive the ultraviolet light-emitting diode 183 to emit ultraviolet light.

[0100] The signal processing circuit 211 can be set according to the signal processing requirement. In an optional embodiment, as shown in Figure 10As shown, the signal processing circuit 211 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a capacitor C1 and an operational amplifier U1, a first end of the first resistor R1 is connected to the sensing layer 20 through the sensing signal line, a second end of the first resistor R1, the first end of the first resistor R1 and a first end of the second resistor R2 are connected, a second end of the second resistor R2, a first end of the third resistor R3, a first end of the fourth resistor R4 and a positive input end of the operational amplifier U1 are connected, a second end of the third resistor R3, a second end of the fourth resistor R4 and a second end of the capacitor C1 are grounded, a first end of the fifth resistor R5 is grounded, a second end of the fifth resistor R5, a first end of the sixth resistor R6 and an inverting input end of the operational amplifier U1 are connected, a second end of the sixth resistor R6, an output end of the operational amplifier U1 and a signal input end of the analog-to-digital conversion circuit 212 are connected, the first resistor R1 and the second resistor R2 form a voltage dividing circuit, a current signal generated by the sensing layer 20 generates a voltage signal through the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 and realizes voltage division, the first resistor R1 and the capacitor C1 form a low-pass filter circuit and perform signal filtering on an input signal, the operational amplifier U1, the fifth resistor R5 and the sixth resistor R6 form a positive amplifier and realize positive amplification of the voltage signal, and the amplified voltage signal is transmitted to the analog-to-digital conversion circuit 212 for analog-to-digital conversion.

[0101] The analog-to-digital conversion circuit 212 can adopt a structure such as an analog-to-digital converter and a level conversion circuit, the processor 221 can adopt an MCU and an FPGA chip, and the PWM driving circuit 222 can adopt a structure such as a signal generator and a signal source.

[0102] The sensing layer 20 can adopt a planar metal material or a grid structure and is laid on the insulating layer 19.

[0103] Compared with the prior art, the display device has the beneficial effects that: the display device includes the display panel 100 and the driving circuit 200, the display panel 100 includes the substrate 11, the pixel definition layer 12 and the light-emitting layer 13, the encapsulation layer 14, the plurality of light-blocking layers 15 and the plurality of color resist, the light-emitting assembly 18, the insulating layer 19 and the sensing layer 20 which are sequentially stacked, the light-emitting assembly 18 is stacked on the light-blocking layer 15, when the display panel 100 receives an external force to deform, the sensing layer 20 generates impedance change, when the driving circuit 200 detects the impedance change, an electric signal is output to control the light-emitting assembly 18 to emit ultraviolet light, the light-blocking layer 15 deforms or recovers deformation when receiving the ultraviolet light, so that the light-blocking layer 15 deforms synchronously with the light-emitting layer 13, the light-blocking layer 15 and the light-emitting layer 13 maintain relative positions without layer misregistration, color crosstalk and uneven brightness are avoided, and the display effect of the display panel 100 is improved.

[0104] Embodiment Two

[0105] As shown in FIG. 1, in an optional embodiment, the sensing layer 20 comprises a metal network 21 or a plurality of arrayed metal networks 21, each of which is connected to the driving circuit 200. Figure 11 Figure 13 As shown in FIG. 2, in an optional embodiment, the metal network 21 comprises a plurality of metal grids 201.

[0106] Each of the metal networks 21 comprises a plurality of metal grids 201.

[0107] In the embodiment, the metal network 21 is formed by the intersection of horizontal and vertical metal wires, and forms a plurality of metal grids 201. The metal wires can be silver nanowires. The metal network 21 can be directly tiled on the insulating layer 19, or divided into a plurality of metal networks 21 which are respectively arranged at corresponding positions. Each of the metal networks 21 is respectively connected to the driving circuit 200. The driving circuit 200 can determine the position of the tensile deformation according to the impedance change transmitted by the metal network 21 at the corresponding position, and output the corresponding electrical signal to the light-emitting component 18 at the position of the tensile deformation, so that the light-emitting component 18 emits ultraviolet light and triggers the shape change of the light-blocking layer 15 at the corresponding position, and the corresponding deformation or recovery of the light-emitting layer 13 and the color resist layer 16 at the corresponding position.

[0108] Further, the display panel 100 is sequentially divided into a central region 110, a transition region 120 and an edge region 130 from the center position to the periphery. The central region 110, the transition region 120 and the edge region 130 are respectively provided with a plurality of arrayed metal networks 21.

[0109] The driving circuit 200 is configured to output an electrical signal to the light-emitting component 18 at the corresponding region when the impedance change of the metal network 21 at the corresponding region is detected.

[0110] In the embodiment, the metal network 21 of the sensing layer 20 is set as a plurality of independent metal networks 21, and is sequentially divided according to the central region 110, the transition region 120 and the edge region 130. The metal network 21 of each region is respectively connected to the driving circuit 200.

[0111] ​Generally, when the display panel 100 is stretched under stress, the edge area 130 deforms greatly, and the deformation amount gradually decreases to the center area 110. Therefore, when the stress is large, the edge area 130, the transition area 120, and the edge area 130 can all deform, when the stress is small, the edge area 130 and the transition area 120 can deform, and the center area 110 does not deform, and when the stress is smaller, the edge area 130 deforms, and the transition area 120 and the center area 110 can not deform. Therefore, by partitioning the display panel 100, the driving circuit 200 determines the position of the stretch deformation according to the impedance change of the metal network 21 of the corresponding area, and outputs the corresponding electrical signal to the light emitting component 18 at the stretch deformation position, so that the light emitting component 18 emits ultraviolet light and triggers the shape change of the light shielding layer 15 of the corresponding area, and the light emitting layer 13 and the color resistance layer 16 of the corresponding area correspondingly deform or recover, thereby accurately matching the deformation of the display panel 100 in different areas, and further ensuring the display effect of the display panel 100 when stretched.

[0112] Further, in order to improve the detection sensitivity and deformation energy absorption capacity, in an optional embodiment, as shown in Figure 14 The size of the metal grid 201 of the center area 110, the transition area 120, and the edge area 130 gradually decreases.

[0113] In this embodiment, the metal network 21 of each area is composed of four metal grids 201, and the metal grid 201 of each area is different. The size of the metal grid 201 of the metal network 21 of the center area 110 is larger, and the number of the metal network 21 is less. The size of the metal grid 201 of the metal network 21 of the edge area 130 is smaller, and the number of the metal network 21 is more. For example, Figure 14 As shown in the same size of each area, the ratio of the number of the metal network 21 of the center area 110, the transition area 120, and the edge area 130 can be 1:2:4, and the ratio of the size of the metal grid 201 of the center area 110, the transition area 120, and the edge area 130 can be 4:2:1.

[0114] When stretched and deformed, the edge area 130 deforms more greatly, and therefore, the metal network 21 of the edge area 130 is set to be more, and the size of the metal grid 201 is smaller, which can improve the deformation energy absorption capacity of the edge area 130. Similarly, when stretched and deformed, the deformation of the center area 110 decreases, and therefore, the metal network 21 of the edge area 130 is set to be less, and the size of the metal grid 201 is larger, which can realize high-precision positioning. At the same time, the metal network 21 of the edge area 130 can realize strain transmission and deformation energy absorption.

[0115] Further, in order to realize the synchronization of the light shielding layer 15 to match the deformation of different regions, in an optional embodiment, the proportion of the photosensitive crosslinking agent in the light shielding layer 15 of the central region 110 is greater than the proportion of the photosensitive crosslinking agent in the light shielding layer 15 of the transition region 120.

[0116] The proportion of the photosensitive crosslinking agent in the light shielding layer 15 of the transition region 120 is greater than the proportion of the photosensitive crosslinking agent in the light shielding layer 15 of the edge region 130.

[0117] In the embodiment, the proportion of the photosensitive crosslinking agent affects the softening threshold of the light shielding layer 15. The greater the proportion of the photosensitive crosslinking agent, the greater the softening threshold. The smaller the proportion of the photosensitive crosslinking agent, the smaller the softening threshold.

[0118] According to the above analysis, when stretched, the edge region 130 deforms more, and correspondingly, the light shielding layer 15 needs to deform more. Therefore, the softening threshold of the light shielding layer 15 should be smaller. When the light shielding layer 15 of the edge region 130 receives an electrical signal, it is easier to soften, so as to match the large deformation of the color resist layer 16 and the light emitting layer 13, and make it follow the synchronous deformation of the large deformation of the color resist layer 16 and the light emitting layer 13.

[0119] At the same time, when stretched, the central region 110 deforms less, and correspondingly, the light shielding layer 15 needs to deform less. Therefore, the softening threshold of the light shielding layer 15 should be greater. When the light shielding layer 15 of the central region 110 receives an electrical signal, the light shielding layer 15 matches the small deformation of the color resist layer 16 and the light emitting layer 13, and makes it follow the synchronous deformation of the small deformation of the color resist layer 16 and the light emitting layer 13.

[0120] Embodiment three

[0121] Further, during the stretching process of the display panel 100, there may be damage, such as extreme stretching or high-frequency stretching leading to high-frequency fatigue. The acrylate liquid crystal monomer may have a molecular chain rupture, and the acrylate liquid crystal monomer cannot realize normal morphological changes. Therefore, as shown in FIGS. 1A and 1B, the light shielding layer 15 further includes a repair capsule 151. The repair capsule 151 includes a shell 152 and a repair liquid 153 contained in the shell 152. The repair liquid 153 is a disulfide bond repair liquid. Figure 15 and Figure 16 The repair capsule 151 further includes a shell 152 and a repair liquid 153 contained in the shell 152. The repair liquid 153 is a disulfide bond repair liquid.

[0122] The repair capsule 151 breaks the shell 152 and releases the repair liquid 153 when the display panel 100 is damaged by stretching, and the repair liquid 153 repairs the stress change characteristics of the light shielding layer 15.

[0123] The proportion of the repair capsule 151 in the light shielding layer 15 of the central region 110 is less than the proportion of the repair capsule 151 in the light shielding layer 15 of the transition region 120.

[0124] The proportion of the repair capsules 151 in the light-shielding layer 15 of the transition zone 120 is less than the proportion of the repair capsules 151 in the light-shielding layer 15 of the edge zone 130.

[0125] In the present embodiment, the light-shielding layer 15 of the center zone 110, the transition zone 120 and the edge zone 130 are respectively provided with corresponding proportions of repair capsules 151. When the display panel 100 is damaged during the stretching process, such as extreme stretching, the shell 152 of the repair capsule 151 is micro-cracked, the repair capsule 151 is broken and the repair liquid 153 is released, the disulfide bond repair liquid contacts the free radicals in the light-shielding layer 15 to occur a dynamic covalent bonding reaction, the crosslinking network is rebuilt, the stress change characteristic of the light-shielding layer 15 is repaired, and at the same time, the photoinitiator of the repair liquid 153 is decomposed under ultraviolet light irradiation to accelerate the disulfide bond recombination.

[0126] At the same time, according to the above analysis, the edge zone 130 deforms more during stretching, so the damage degree and possibility are greater. Therefore, the proportion of the repair capsules 151 added in the edge zone 130 is greater, so that the repair capability of the edge zone 130 can be improved. The stretching deformation of the transition zone 120 and the center zone 110 is smaller, and the damage degree and possibility are smaller. Therefore, the proportion of the repair capsules 151 added in the transition zone 120 and the center zone 110 is gradually reduced, so that the repair capabilities of different zones can be matched.

[0127] The proportion of the repair capsules 151 in the center zone 110, the transition zone 120 and the edge zone 130 can be set according to requirements, for example, the proportion of the repair capsules 151 added in the edge zone 130 is 10%, the proportion of the repair capsules 151 added in the transition zone 120 is 7%, and the proportion of the repair capsules 151 added in the center zone 110 is 3%.

[0128] The repair capsule 151 is a spherical particle, the shell 152 can be polyurethane, and the disulfide bond repair liquid can be composed of disulfide and a photoinitiator.

[0129] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A display device, characterized by comprising: The display panel comprises a substrate, a plurality of pixel definition layers and a plurality of light emitting layers, the pixel definition layers and the light emitting layers are staggered and stacked on the substrate along a first direction, the first direction is an extension direction of the substrate, an encapsulation layer is stacked on the pixel definition layers and the light emitting layers, a plurality of light shielding layers and a plurality of color resistance layers are staggered and stacked on the encapsulation layer along the first direction, each of the light shielding layers corresponds to one of the pixel definition layers, and each of the light emitting layers corresponds to one of the light emitting layers, a plurality of light emitting components are stacked on the light shielding layers, an insulating layer is stacked on the light emitting components, a sensing layer is stacked on the insulating layer, the sensing layer generates deformation and impedance change when receiving an external force or when the external force is removed, and a driving circuit is connected with the light emitting components and the sensing layer, the driving circuit is used for outputting an electric signal to the light emitting components when the sensing layer generates deformation when the display panel is stretched by the external force and the impedance change of the sensing layer is detected, the light emitting components emit ultraviolet light when receiving the electric signal, the light shielding layers change from a crystalloid state to a colloidal state under the irradiation of the ultraviolet light, and the light shielding layers are stretched and deformed along with the color resistance layers, the driving circuit is used for cutting off the output of the electric signal to the light emitting components when no continuous impedance change is detected, the light emitting components do not emit ultraviolet light, and the light shielding layers change from the colloidal state to the crystalloid state, and the driving circuit is used for detecting the impedance change again and outputting the electric signal again when the external force is removed, the light emitting components emit the ultraviolet light when receiving the electric signal, the light shielding layers change from the crystalloid state to the colloidal state under the irradiation of the ultraviolet light, and the light shielding layers are stretched and deformed along with the color resistance layers. The light emitting components comprise a first electrode, a second electrode and an ultraviolet light emitting diode connected with the first electrode and the second electrode, the first electrode and the second electrode are also connected with the driving circuit, the first electrode, the second electrode and the light shielding layer form a containing cavity, and the ultraviolet light emitting diode is accommodated in the containing cavity. An opening is arranged on one side of the containing cavity facing the insulating layer, and the display panel further comprises a plurality of light isolation layers, each of the light isolation layers is stacked on the light emitting component and covers the opening. The light shielding layer is composed of acrylate liquid crystal monomers, a photosensitive crosslinking agent and carbon black nanoparticles, the photosensitive crosslinking agent triggers a crosslinking reaction and controls the reorganization deformation of the acrylate liquid crystal monomers when receiving the ultraviolet light. The sensing layer comprises one metal network or a plurality of arrayed metal networks, and each of the metal networks is connected with the driving circuit. Each of the metal networks comprises a plurality of metal grids. The display panel is divided into a central area, a transition area and an edge area from a central position to a periphery, and a plurality of arrayed metal networks are arranged in the central area, the transition area and the edge area, respectively. ​ ​ ​ ​ ​ ​ 2. The display device of claim 1, wherein, ​ ​ 3. The display device of claim 2, wherein, ​ ​ 4. The display device of claim 1, wherein ​ 5. The display device of claim 4, wherein, ​ ​ 6. The display device of claim 5, wherein, ​ The driving circuit is configured to output the electrical signal to the light-emitting component of the corresponding area when the impedance change of the metal network of the corresponding area is detected.

7. The display device of claim 6, wherein, The size of the metal grid of the central area, the transition area and the edge area decreases in turn.

8. The display device of claim 7, wherein, The proportion of the photosensitive crosslinking agent in the light-shielding layer of the central area is greater than the proportion of the photosensitive crosslinking agent in the light-shielding layer of the transition area. The proportion of the photosensitive crosslinking agent in the light-shielding layer of the transition area is greater than the proportion of the photosensitive crosslinking agent in the light-shielding layer of the edge area.

9. The display device of claim 7, wherein, The light-shielding layer further comprises a repair capsule, the repair capsule comprises a shell and a repair liquid contained in the shell, and the repair liquid is a disulfide bond repair liquid. When the display panel is stretched and damaged, the shell of the repair capsule is broken and the repair liquid is released, and the repair liquid repairs the stress change characteristic of the light-shielding layer. The proportion of the repair capsule in the light-shielding layer of the central area is less than the proportion of the repair capsule in the light-shielding layer of the transition area. The proportion of the repair capsule in the light-shielding layer of the transition area is less than the proportion of the repair capsule in the light-shielding layer of the edge area.

10. The display device according to any one of claims 1 to 9, wherein The driving circuit comprises: A signal processor connected with the sensing layer, configured to output a corresponding sensing signal when the impedance change of the sensing layer is detected; A signal controller connected with the signal processor and the light-emitting component, configured to output the electrical signal to the light-emitting component when the sensing signal is received.

Images