Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a substrate, a light source layer, a pixel layer and a packaging layer, and the light source layer is arranged on the substrate; the pixel layer is arranged on the light source layer, and light rays emitted by the light source layer are emitted from the pixel layer; the packaging layer is arranged on the pixel layer; wherein the pixel layer comprises black matrixes and a plurality of pixel parts, every two adjacent pixel parts are separated through the black matrixes, each pixel part comprises a light adjusting layer, the light adjusting layers are made of electric field sensitive type hydrogel materials, and the light transmittance of the electric field sensitive type hydrogel materials is adjustable between 0% and 90%. The display gray scale of the display panel is controlled by adding the independent control light adjusting layer in the display panel, and display of the display panel is achieved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Due to the rise of flexible displays, wearable display devices are gradually attracting the attention of consumers. Flexible wearable display panels need to be wearable, so they need to be ultra-thin and ultra-light, while also having environmental stability.

[0003] In traditional display panels, for example, liquid crystal display panels require a liquid crystal box to achieve deflection, which is difficult to bend and difficult to achieve for flexible displays. For organic light-emitting display panels, the environmental stability of organic light-emitting is poor and the cost is high. For wearable display panels, the requirements for refresh rate and response time are not high, so a new type of display panel is needed to achieve wearable display. Summary of the invention

[0004] The purpose of the present application is to provide a display panel and a display device, which realizes display of the display panel by controlling the display grayscale of the display panel by adding a separate light adjustment layer in the display panel.

[0005] The present application discloses a display panel, which includes a base substrate, a light source layer, a pixel layer and an encapsulation layer, wherein the light source layer is arranged on the base substrate; the pixel layer is arranged on the light source layer, and the light emitted by the light source layer is emitted from the pixel layer; the encapsulation layer is arranged on the pixel layer; wherein the pixel layer includes a black matrix and a plurality of pixel parts, and two adjacent pixel parts are separated by the black matrix, and the pixel part includes a light adjustment layer, and the light adjustment layer is formed of an electric field-sensitive hydrogel material, and the transmittance of the electric field-sensitive hydrogel material is adjustable between 0% and 90%.

[0006] Optionally, the pixel portion further includes a color filter portion, the width of the color filter portion is less than or equal to the width of the light adjustment layer, and the color filter portion includes one or more of a red filter portion, a green filter portion or a blue filter portion; the color filter portion is arranged on the light adjustment layer.

[0007] Optionally, the color filter portion is formed by doping a hydrogel material with a polymer color resist material; the pixel portion also includes an electroexpansion portion, which is arranged around the color filter portion, and the electroexpansion portion is used to expand or contract under the action of an electric field; along a direction perpendicular to the light output direction, the color filter portion can be deformed under the action of the electroexpansion portion to change the projection area of ​​the color filter portion on the substrate.

[0008] Optionally, when the electroexpandable portion expands under the action of the electric field, the projected area of ​​the color filter portion on the base substrate is reduced; when the electroexpandable portion contracts under the action of the electric field, the projected area of ​​the color filter portion on the base substrate is increased; when the electroexpandable portion contracts to a minimum contracted state under the action of the electric field, the projected area of ​​the color filter portion on the base substrate is in a maximum area state, and under the projection of the base substrate, the projection of the color filter portion does not overlap with the projection of the black matrix.

[0009] Optionally, the electro-expandable portion is formed of an electric field-sensitive hydrogel material, and the electro-expandable portion is opaque.

[0010] Optionally, the pixel portion further includes a first electrode and a second electrode, the first electrode being arranged on a side of the light adjustment layer away from the color filter portion, and the second electrode being arranged on a side of the color filter portion away from the light adjustment layer, and the first electrode and the second electrode being used to control the transmittance of the light adjustment layer.

[0011] Optionally, the pixel portion further includes a third electrode and a fourth electrode, the third electrode is arranged on one side of the electroexpansive portion, and the fourth electrode is arranged on the other side of the electroexpansive portion, and the third electrode and the fourth electrode are used to control the expansion and contraction of the electroexpansive portion.

[0012] Optionally, the pixel portion further includes a fifth electrode and a sixth electrode, the fifth electrode being arranged on a side of the electroexpansion portion away from the light adjustment layer, and the sixth electrode being arranged on the other side of the light adjustment layer away from the electroexpansion portion; under the orthographic projection of the base substrate, the fifth electrode and the sixth electrode are arranged to overlap, and the electroexpansion portion and the light adjustment layer are respectively within the projection range of the fifth electrode; the fifth electrode and the sixth electrode simultaneously control the electroexpansion portion and the light adjustment layer.

[0013] Optionally, the maximum width of the color filter portion is less than or equal to the width of the light regulating layer, and the electroswellable portion partially overlaps with the light regulating layer.

[0014] The present application discloses a display device, comprising a driving circuit and the above-mentioned display panel, wherein the driving circuit is used to drive the display panel to display.

[0015] The present application realizes the adjustment of the display grayscale by setting an independently controllable light adjustment layer in each pixel part. Compared with the liquid crystal display panel, each light adjustment layer can be independently packaged corresponding to each pixel to meet the requirements of deformation and folding in the flexible display panel. The folding and bending of the independently packaged light adjustment layer does not affect the normal display effect. Moreover, the light adjustment layer is formed by an electric field sensitive hydrogel material, and the transmittance of the light adjustment layer can be controlled by an electric field to achieve different light transmittances at different positions to display different pictures. The electric field sensitive hydrogel material has good bending performance and good deformation ability in the flexible display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 is a schematic diagram of a display panel according to a first embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a display panel according to a second embodiment of the present application;

[0019] Figure 3 is a schematic diagram of an electroexpansion portion of a pixel portion of the present application;

[0020] Figure 4 is a display schematic diagram of a display panel according to a second embodiment of the present application;

[0021] Figure 5 is a schematic diagram of another display panel according to the second embodiment of the present application;

[0022] Figure 6 is a schematic diagram of a display device of the present application.

[0023] Among them, 100, display panel; 110, base substrate; 120, light source layer; 130, pixel layer; 131, black matrix; 132, electrolyte solution; 140, pixel part; 141, light adjustment layer; 142, color filter part; 143, electroexpansion part; 144, first electrode; 145, second electrode; 146, third electrode; 147, fourth electrode; 148, fifth electrode; 149, sixth electrode; 150, encapsulation layer; 160, driving layer; 200, display device; 210, driving circuit. DETAILED DESCRIPTION

[0024] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0025] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. In addition, the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicating orientation or positional relationships are described based on the orientation or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the simplified description of the present application, rather than indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0027] Embodiment 1:

[0028] Figure 1 is a schematic diagram of a display panel of the first embodiment of the present application, see Figure 1 As shown, the present application discloses a display panel 100, which includes a base substrate 110, a light source layer 120, a pixel layer 130 and an encapsulation layer 150, wherein the light source layer 120 is arranged on the base substrate 110; the pixel layer 130 is arranged on the light source layer 120, and the light emitted by the light source layer 120 is emitted from the pixel layer 130; the encapsulation layer 150 is arranged on the pixel layer 130; wherein the pixel layer 130 includes a black matrix 131 and a plurality of pixel parts 140, and two adjacent pixel parts 140 are separated by the black matrix 131, and the pixel parts 140 include a light adjustment layer 141, and the light adjustment layer 141 is formed of an electric field sensitive hydrogel material, and the light transmittance of the electric field sensitive hydrogel material is adjustable between 0% and 90%.

[0029] The present application realizes the adjustment of the display grayscale by setting an independently controllable light adjustment layer 141 in each pixel part 140. Compared with the liquid crystal display panel 100, each light adjustment layer 141 can be independently packaged corresponding to each pixel to meet the requirements of deformation and folding in the flexible display panel 100. The normal display effect is not affected when the folding and bending is realized by the independently packaged light adjustment layer 141. Moreover, the light adjustment layer 141 is formed by an electric field sensitive hydrogel material, and the transmittance of the light adjustment layer 141 can be controlled by an electric field to achieve different light transmittances at different positions to display different pictures. The electric field sensitive hydrogel material has good bending performance and has good deformation ability in the flexible display panel 100.

[0030] The present application uses a light adjustment layer 141 made of an electric field sensitive hydrogel material to adjust the grayscale of the display, and controls the light transmittance of the light adjustment layer 141 to adjust the brightness. For example, when the grayscale is low, the display brightness is low, and when the grayscale is high, the display brightness is high.

[0031] It is worth mentioning that the display panel 100 of the present application can be a wearable display panel 100. Of course, the solution of the present application can also be applied to display panels 100 of other types of use, and no further limitation is made on this. However, for the wearable display panel 100, a high refresh rate and a high response time are not required. Therefore, the light adjustment layer 141 in this embodiment can completely replace the liquid crystal, and can realize the traditional monochrome display or multi-color display. The transmittance is changed by the electric field sensitive hydrogel material to achieve different display effects. Relatively speaking, the biggest advantage of the electric field sensitive hydrogel material is that it has good deformation ability.

[0032] The wearable display panel 100 can be used in blood glucose meters and medical monitoring equipment. In this type of display panel 100, only simple display functions and some special color rendering requirements are required. For example, a monochrome or dual-color display can be used. For example, normal information is displayed by green pixels, and urgent information is displayed by red pixels. Only red display screens and green display screens are required. When designing the display panel 100, only two colors of pixels need to be set. Compared with the traditional display panel 100, the liquid crystal display panel 100 requires a liquid crystal box to achieve deflection, so flexible display cannot be achieved. The organic light-emitting display panel 100 has a high cost and poor environmental stability. For the electronic paper display panel 100, it needs to rely on ambient light and is not applicable. The display panel 100 in this embodiment has the characteristics of flexibility, low cost and high environmental stability.

[0033] Specifically, the pixel portion 140 further includes a color filter portion 142, and the color filter portion 142 includes one or more of a red filter portion, a green filter portion, or a blue filter portion; the color filter portion 142 is disposed on the light adjustment layer 141. For example, for the above-mentioned monochrome display panel 100, only a color filter portion 142 of one color is required, which can be one of a red filter portion, a green filter portion, or a blue filter portion. For example, for the above-mentioned dual-color display panel 100, two of the red filter portion, a green filter portion, or a blue filter portion can be used.

[0034] In this embodiment, the main function of the light adjustment layer 141 is to adjust the gray scale of the display by adjusting the transmittance of the light to achieve different screen displays. By arranging the color filter 142 on the light adjustment layer 141, the light is emitted from the color filter 142 after the light adjustment layer 141 adjusts the brightness of the light, thereby achieving color display.

[0035] Specifically, the light adjustment layer 141 is formed of an electric field sensitive hydrogel material. Among them, the hydrogel material is synthesized by monomers or polymers through the formation of a water-permeable cross-linked network. The monomers are polymerized to form polymers, and then an interpenetrating polymer network (IPN) is formed through a gel process (cross-linking method). The hydrogel material can retain a large amount of water and maintain a three-dimensional network structure. The cross-linking of the condensed network can be divided into non-covalent bonds (i.e., physical cross-linking) or covalent bonds (i.e., chemical cross-linking). Hydrogels are usually jelly-like solids with elasticity.

[0036] Polymer hydrogel materials can be defined as cross-linked polymers that can swell in water and retain a large amount of water but cannot be dissolved. The forces that induce phase transitions in polymers can be summarized into four categories: hydrophobic interactions, hydrophilic interactions (including hydrogen bonds and water solvation), van der Waals forces, and electrostatic interactions between ions. As the external environment changes, these four forces compete with each other, causing the conformation of polymer segments in the solution to change, ultimately leading to the occurrence of phase transitions. Under the stimulation of external physical and chemical factors such as temperature, acidic and alkaline solutions, light, electricity, magnetism, sound, force, and chemicals, some polymer hydrogels can undergo reversible changes in volume and shape. This type of hydrogel that is responsive to changes in the external environment is called an intelligent hydrogel. Among various external stimulus conditions, since electric fields are easy to apply and easy to control, electrically responsive hydrogels have considerable advantages over other types of intelligent hydrogels. Electric field-sensitive hydrogels are generally composed of polyelectrolytes. When such hydrogels are placed in an electrolyte solution 132, under electric field stimulation, the gel will undergo volume or shape changes, realizing the conversion from electrical energy to mechanical energy. The phase transition caused by the change in gel volume or shape causes the light transmittance of the hydrogel material to change.

[0037] The polymer network of most electric field sensitive hydrogels contains chemically bonded ionized groups, so this type of gel is often prepared by chemical or physical crosslinking of synthetic polymers or natural polymers with ionic groups. However, the mechanical properties of hydrogels obtained from a single polymer are often poor, so copolymerization or blending methods are usually used to prepare electric field sensitive hydrogels with certain mechanical strength. For example, using synthetic polymers as raw materials, copolymerization, blending or polymer interpenetration methods, and mixing inductors and light control materials in polymers can prepare electric field sensitive hydrogel materials with various properties. The hydrogel has electric field sensitivity and can complete the corresponding phase transition under the action of the electric field to change its appearance. The light control component will change the light transmittance along with the change in appearance, and its light transmittance can vary between 0 and 90%.

[0038] Specifically, the light transmittance of the electric field-sensitive hydrogel material changes differently under different voltages. When voltage is applied, the light transmittance of the electric field-sensitive hydrogel material increases, and when the voltage is removed, the light transmittance of the electric field-sensitive hydrogel material decreases, and within a certain range, the greater the voltage, the greater the light transmittance of the corresponding electric field-sensitive hydrogel material. The electric field-sensitive hydrogel material in this embodiment can achieve 16 grayscale, 32 grayscale, 64 grayscale, etc. display.

[0039] Specifically, the pixel portion 140 also includes a first electrode 144 and a second electrode 145, the first electrode 144 is arranged on a side of the light adjustment layer 141 away from the color filter portion 142, and the second electrode 145 is arranged on a side of the color filter portion 142 away from the light adjustment layer 141, and the first electrode 144 and the second electrode 145 are used to control the transmittance of the light adjustment layer 141.

[0040] In this embodiment, the first electrode 144 and the second electrode 145 are transparent electrodes, respectively, and are arranged on both sides of the light adjustment layer 141. By controlling the electric field of the first electrode 144 and the second electrode 145, the light transmittance of the light adjustment layer 141 varies between 0% and 90%. Of course, for some display panels 100 that only need to display two grayscales of light and dark, multiple first electrodes 144 or multiple second electrodes 145 can be connected as a whole first electrode 144 or second electrode 145, and then the second electrode 145 or the first electrode 144 on the other side is driven to realize the control of the light transmittance of the color filter part 142. When the sub-pixel of the display panel 100 needs 0 grayscale, the electric field of the first electrode 144 and the second electrode 145 is controlled to be zero, so that the light transmittance of the light adjustment layer 141 is 0%. At this time, the light provided by the light source cannot pass through the light adjustment layer 141, and the sub-pixel does not display. When the sub-pixel of the display panel 100 is 1 gray scale, the first electrode 144 and the second electrode 145 are energized to form an electric field, so that the light transmittance of the light adjustment layer 141 is the highest or a value between 0% and 90%, and the sub-pixel is displayed at this time. Of course, for the above-mentioned 16 gray scales, 32 gray scales, and 64 gray scales, it is necessary to set according to the relationship between the voltage drive and the light transmittance of the light adjustment layer 141. For example, for 16 gray scales, 0% to 90% is divided into 16 gray scales, and 16 driving voltages are also set, so as to realize different gray scale displays.

[0041] The advantage of this embodiment is that the adjustment of the display grayscale is achieved by providing an independently controllable light adjustment layer 141 , which has the characteristics of flexibility, low cost, and high environmental stability.

[0042] Embodiment 2:

[0043] Generally speaking, the opening area of ​​each pixel in the display panel 100 does not change after being designed and formed. In this embodiment, by designing the electroexpansion portion 143 and utilizing the expansion deformation capability of the electroexpansion portion 143, the function of making the opening area of ​​each pixel in the display panel 100 changeable is achieved.

[0044] Figure 2 is a schematic diagram of a display panel according to a second embodiment of the present application, Figure 3 is a schematic diagram of the electroexpansion portion of the pixel portion of the present application, Figure 4 is a display schematic diagram of a display panel of the second embodiment of the present application, see Figures 2 to 4As shown, the present application also discloses a display panel 100. On the basis of the above embodiments, the pixel portion 140 further includes an electro-expansion portion 143, and the electro-expansion portion 143 is arranged around the color filter portion 142. The electro-expansion portion 143 is used to expand or contract under the action of an electric field; the color filter portion 142 is formed by doping a hydrogel material with a polymer color resist material; along a direction perpendicular to the light output direction, the color filter portion 142 can be deformed under the action of the electro-expansion portion 143 to change the projection area of ​​the color filter portion 142 on the base substrate 110.

[0045] This embodiment is applied to a dual-color display panel 100, for example, a dual-color display panel 100 that uses red sub-pixels and green sub-pixels for display. The color filter portion 142 includes a red filter portion and a green filter portion, and the red filter portion and the green filter portion are respectively arranged at intervals. The red filter portion corresponds to the red sub-pixel, and the green filter portion corresponds to the green sub-pixel.

[0046] When the display panel 100 needs to use some green sub-pixels to display some information, the light-transmitting area of ​​the green filter corresponding to the green sub-pixel can be adjusted to increase the area of ​​the green sub-pixel to be displayed. When using the enlarged green sub-pixel to display information, on the one hand, it is clearer, and the larger sub-pixel area makes the displayed information more obvious and eye-catching. On the other hand, when the green sub-pixel is needed for display, since the red sub-pixel is not used for display, the area of ​​the red sub-pixel can be reduced at this time, so that the green sub-pixel is enlarged to improve the display effect of the two-color display panel 100 when performing monochrome display. Similarly, when the red sub-pixel is needed for display, the display effect of the red sub-pixel can also be enhanced. Among them, the display panel 100 of this embodiment can also perform two-color or multi-color display.

[0047] It is understandable that the projection area of ​​the color filter 142 on the substrate 110 generally refers to the orthographic projection area on the substrate 110, which is also the effective light transmission area of ​​the color filter 142. Considering that the dual-color display panel 100 displays different monochrome patterns in different situations, for example, when the blood glucose meter is performing blood glucose display, it is necessary to display a green indication when the blood glucose content is low, then the light transmittance of the light adjustment layer 141 of the red filter can be set to 0%, and red is not displayed at this time. When the blood glucose content is high, it is necessary to display a red indication, then the light transmittance of the light adjustment layer 141 of the green filter can be set to 0%, and green is not displayed at this time. In the above-mentioned red and green monochrome display process, by adjusting the effective light transmission areas of the red filter and the green filter, the red sub-pixel area and the green sub-pixel area in the monochrome display are increased, and a better display effect is achieved.

[0048] In this embodiment, only two states of the light adjustment layer 141, including the light-transmitting state and the light-impermeable state, can be used. By adjusting the doping material of the electric field-sensitive hydrogel material in the light adjustment layer 141, the light adjustment layer 141 has a higher light transmittance when the electric field is on; when the electric field is not on, the light transmittance of the light adjustment layer 141 is lower, even 0%. In this way, when performing red monochrome display, even if there is light emitted from the green filter part, it is absorbed by the light adjustment layer 141, so that the green filter part no longer displays.

[0049] The color filter 142 is formed by doping a hydrogel material with a polymer color-resistance material. The polymer color-resistance material refers to a type of polymer material with specific optical properties that can be used to adjust, block or change the propagation path and color of light. By adjusting the composition and structure of the material, selective absorption or transmission of light of different wavelengths can be achieved. Specifically, the color filter 142 can be made by adding corresponding color-resistance color coatings and adhesives to alginate or polyethylene hydrogel base materials.

[0050] Continue to see Figure 3 As shown, when the electroexpandable portion 143 expands under the action of the electric field, the projected area of ​​the color filter portion 142 on the base substrate 110 is reduced; when the electroexpandable portion 143 contracts under the action of the electric field, the projected area of ​​the color filter portion 142 on the base substrate 110 is increased. The color filter portion 142 has a certain deformation ability. During the expansion and extrusion process of the electroexpandable portion 143, the color filter portion 142 is extruded and deformed, so that the projected area of ​​the color filter portion 142 on the base substrate 110 is reduced. During the contraction process of the electroexpandable portion 143, the color filter portion 142 expands, so that the projected area of ​​the color filter portion 142 on the base substrate 110 is increased. Through the expansion and contraction of the electroexpandable portion 143, the increase and reduction of the effective light transmission area of ​​the color filter portion 142 is controlled.

[0051] Specifically, the electroexpandable portion 143 is deformed mainly under the action of electric current or voltage, and the deformation includes contraction or expansion. During the expansion or contraction process of the electroexpandable portion 143 , the color filter portion 142 is squeezed or expanded, causing it to undergo passive deformation, thereby reducing or increasing the filtering area of ​​the color filter portion 142 .

[0052] When the electroexpansion portion 143 shrinks to the minimum shrinkage state under the action of the electric field, the projection area of ​​the color filter portion 142 on the base substrate 110 is in the maximum area state, and under the projection of the base substrate 110, the projection of the color filter portion 142 does not overlap with the projection of the black matrix 131. In other words, the maximum width of the color filter portion 142 is less than or equal to the width of the light adjustment layer 141, and the electroexpansion portion 143 partially overlaps with the light adjustment layer 141. Generally speaking, when the color filter portion 142 is in the maximum area state, the projection of the color filter portion 142 on the base substrate 110 completely overlaps with the projection of the light adjustment layer 141 on the base substrate 110. The projection of the black matrix 131 on the base substrate 110 does not overlap with the projection of the light adjustment layer 141 on the base substrate 110.

[0053] Specifically, the electroexpandable portion 143 is formed of an electric field-sensitive hydrogel material, and the electroexpandable portion 143 is opaque. The electric field-sensitive hydrogel material used in the electroexpandable portion 143 of the present application contains black light-shielding particles, so that the electroexpandable portion 143 is opaque, and under the drive of the electric field, even if a phase change occurs inside the electroexpandable portion 143, due to the presence of the black light-shielding particles, the electroexpandable portion 143 is also light-shielding at this time. Of course, some black light-shielding particles can also be doped to enhance the light-shielding ability of the electroexpandable portion 143. As the electric field-sensitive hydrogel material described above will deform under the action of an electric field, in this embodiment, this deformation effect is utilized to achieve the control of the expansion and contraction of the electroexpandable portion 143 by an electric field.

[0054] Specifically, the pixel portion 140 further includes a third electrode 146 and a fourth electrode 147. The third electrode 146 is disposed on one side of the electroexpansive portion 143, and the fourth electrode 147 is disposed on the other side of the electroexpansive portion 143. The third electrode 146 and the fourth electrode 147 are used to control the expansion and contraction of the electroexpansive portion 143.

[0055] The electroexpandable portion 143 of the present application, under the action of the third electrode 146 and the fourth electrode 147, will shrink or expand in parallel to the third electrode 146 and the fourth electrode 147, and will shrink or expand in a direction perpendicular to the third electrode 146 and the fourth electrode 147. The present application mainly utilizes the shrinkage or expansion in parallel to the third electrode 146 and the fourth electrode 147 to change the effective light transmission area of ​​the color filter portion 142. The display panel 100 of the present embodiment can also perform dual-color or multi-color display, and the electroexpandable portion 143 can choose to expand or shrink according to actual conditions.

[0056] Figure 5is a schematic diagram of another display panel of the second embodiment of the present application, see Figure 5 As shown, of course, in another embodiment, the first electrode 144 and the third electrode 146 can also be combined into the same electrode. Specifically, the pixel portion 140 further includes a fifth electrode 148 and a sixth electrode 149. The fifth electrode 148 is arranged on a side of the electroexpansion portion 143 away from the light adjustment layer 141, and the sixth electrode 149 is arranged on the other side of the light adjustment layer 141 away from the electroexpansion portion 143. Under the orthographic projection of the base substrate 110, the fifth electrode 148 and the sixth electrode 149 are arranged to overlap, and the electroexpansion portion 143 and the light adjustment layer 141 are respectively within the projection range of the fifth electrode 148. The fifth electrode 148 and the sixth electrode 149 simultaneously control the electroexpansion portion 143 and the light adjustment layer 141.

[0057] Taking the dual-color display panel 100 as an example, when an electric field exists between the fifth electrode 148 and the sixth electrode 149, the light transmittance of the light adjustment layer 141 between the fifth electrode 148 and the sixth electrode 149 is high, and the electroexpansion portion 143 shrinks at this time, so that the current color filter portion 142 performs monochrome display. When the electric field between the fifth electrode 148 and the sixth electrode 149 is removed, the light transmittance of the light adjustment layer 141 is low, and no display is performed, and the electroexpansion portion 143 expands, shrinking the color filter portion 142 to reduce the area of ​​the sub-pixel that is not displayed.

[0058] Specifically, a pixel driving layer for driving the above-mentioned click is provided between the pixel layer 130 and the light source layer 120. The substrate substrate 110 can be a flexible substrate, and the light source layer 120 can be provided with a plurality of light source arrays on the flexible substrate, or a light bar can be placed on the side to form a side-entry light source to provide light source for the display panel 100. The pixel layer 130 is located on the pixel driving layer, and is mainly composed of a black matrix 131 and a plurality of packaging cavities. The packaging cavity is a flexible package of a polymer polyethylene material, and a pixel portion 140 is provided in the packaging cavity, and each pixel portion 140 is packaged by a packaging cavity. In order to achieve better light effects and expansion effects, an electrolyte solution 132 can also be formed in the packaging cavity, and a light adjustment layer 141, a color filter portion 142, an electroexpansion layer and the above-mentioned electrodes are formed in the solution. The packaging cavities are covered with a black matrix 131, and the black matrix 131 is above the packaging cavity, and is 5 to 10 um larger than the edge of the packaging cavity, so as to ensure that the maximum light transmission area is not affected. The overall encapsulation layer 150 is arranged on the black matrix 131. A polarizer or COE structure is placed on the encapsulation layer 150 to prevent the influence of ambient light. If the visual effect difference is not considered in actual use, this layer design can be omitted. After the protective layer is arranged on the top, the overall display structure can be completed.

[0059] It is worth mentioning that a driving layer 160 can be set between the light source layer 120 and the pixel layer 130, and the driving layer 160 is used to provide driving voltages to the above-mentioned first electrode 144, the second electrode 145, the third electrode 146, the fourth electrode 147, the fifth electrode 148 and the sixth electrode 149 respectively, so as to realize the control of the above-mentioned light adjustment layer 141 and the electroexpansion part 143.

[0060] Figure 6 is a schematic diagram of the display device of the present application, see Figure 6 The present application further discloses a display device, wherein the display device 200 includes a driving circuit 210 and the display panel 100 in any of the above embodiments, and the driving circuit 210 is used to drive the display panel 100 to display.

[0061] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0062] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: substrate substrate; A light source layer is arranged on the base substrate; as well as A pixel layer, disposed on the light source layer, wherein the light emitted by the light source layer is emitted from the pixel layer; An encapsulation layer, disposed on the pixel layer; Among them, the pixel layer includes a black matrix and a plurality of pixel parts, and two adjacent pixel parts are separated by the black matrix. The pixel part includes a light adjustment layer, and the light adjustment layer is formed by an electric field sensitive hydrogel material. The transmittance of the electric field sensitive hydrogel material is adjustable between 0% and 90%.

2. The display panel according to claim 1, characterized in that: The pixel portion further includes a color filter portion, the width of the color filter portion is less than or equal to the width of the light adjustment layer, and the color filter portion includes one or more of a red filter portion, a green filter portion, or a blue filter portion; The color filter portion is arranged on the light adjustment layer.

3. The display panel according to claim 2, characterized in that: The color filter part is formed by doping a hydrogel material with a polymer color-resistance material; The pixel portion further includes an electroexpansion portion, the electroexpansion portion is arranged around the color filter portion, and the electroexpansion portion is used to expand or contract under the action of an electric field; In a direction perpendicular to the light emitting direction, the color filter portion can be deformed under the action of the electroswellable portion to change the projection area of ​​the color filter portion on the base substrate.

4. The display panel according to claim 3, characterized in that: When the electroexpandable portion expands under the action of the electric field, the projection area of ​​the color filter portion on the base substrate is reduced; When the electroexpansion portion contracts under the action of the electric field, the projection area of ​​the color filter portion on the base substrate increases; When the electroexpansion portion contracts to a minimum contraction state under the action of an electric field, the projection area of ​​the color filter portion on the base substrate is in a maximum area state, and under the projection of the base substrate, the projection of the color filter portion does not overlap with the projection of the black matrix.

5. The display panel according to claim 3, characterized in that: The electroexpandable portion is formed of an electric field sensitive hydrogel material and is opaque.

6. The display panel according to claim 2, characterized in that: The pixel portion also includes a first electrode and a second electrode, the first electrode is arranged on a side of the light adjustment layer away from the color filter portion, and the second electrode is arranged on a side of the color filter portion away from the light adjustment layer, and the first electrode and the second electrode are used to control the transmittance of the light adjustment layer.

7. The display panel according to claim 3, characterized in that: The pixel portion further includes a third electrode and a fourth electrode. The third electrode is disposed on one side of the electroexpandable portion, and the fourth electrode is disposed on the other side of the electroexpandable portion. The third electrode and the fourth electrode are used to control expansion and contraction of the electroexpandable portion.

8. The display panel according to claim 3, characterized in that: The pixel portion further includes a fifth electrode and a sixth electrode, The fifth electrode is arranged on a side of the electroexpansion portion away from the light adjustment layer, and the sixth electrode is arranged on the other side of the light adjustment layer away from the electroexpansion portion; Under the orthographic projection of the base substrate, the fifth electrode and the sixth electrode are arranged to overlap, and the electroexpansion portion and the light adjustment layer are respectively within the projection range of the fifth electrode; The fifth electrode and the sixth electrode simultaneously control the electroexpansive portion and the light adjustment layer.

9. The display panel according to claim 3, characterized in that: The maximum width of the color filter portion is less than or equal to the width of the light adjustment layer, and the electroexpansion portion partially overlaps with the light adjustment layer.

10. A display device, characterized in that: It comprises a driving circuit and the display panel according to any one of claims 1 to 9, wherein the driving circuit is used to drive the display panel to display.

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