Display structure and light-emitting device

Abstract

The utility model provides a display structure and a light-emitting device, and relates to the technical field of light emitting. The display structure comprises a display unit and a light emitting unit, the display unit comprises a substrate and an electrowetting structure, the electrowetting structure is arranged on a light emitting surface of the substrate, the electrowetting structure comprises a first conductive plate, a hydrophobic layer and an oil layer, and the first conductive plate, the hydrophobic layer and the oil layer are sequentially stacked on the substrate; the light-emitting unit is arranged on the side, away from the substrate, of the first conductive plate, and the oil layer has a tiled state or a gathered state so as to cover or expose the light-emitting unit. The light emitting intensity can be improved through the built-in light source, and application of the display structure in the environment with low external light intensity is met.

Description

Technical Field

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

[0002] Electrowetting display technology utilizes the natural forces inherent in the interface between oil and water and the methods developed to utilize these forces.

[0003] In related technologies, in the application of electrowetting display technology, there is a problem that it cannot be normally displayed when the external ambient light brightness is low or there is no external ambient light. Utility Model Content

[0004] The present application provides a display structure and a lighting device.

[0005] To achieve the above object, the technical solutions adopted by the present application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a display structure, including:

[0007] A display unit, the display unit includes a substrate and an electrowetting structure, the electrowetting structure is disposed on the light-emitting surface of the substrate, the electrowetting structure includes a first conductive plate, a hydrophobic layer, and an oil layer, and the first conductive plate, the hydrophobic layer, and the oil layer are sequentially stacked on the substrate;

[0008] A lighting unit, disposed on a side of the first conductive plate away from the substrate, and the oil layer has a flat state or an aggregated state to cover or expose the lighting unit.

[0009] In one of the embodiments of the first aspect, the electrowetting structure further includes:

[0010] A sealing frame, the sealing frame is disposed around the outer periphery of the substrate;

[0011] A second conductive plate, the second conductive plate covers the top of the sealing frame; the first conductive plate, the sealing frame, and the second conductive plate define a containing cavity;

[0012] A conductive liquid, the conductive liquid is filled in the containing cavity to electrically connect the conductive liquid, the first conductive plate, and the second conductive plate.

[0013] In one of the embodiments of the first aspect, the height of the lighting unit is greater than the height of the hydrophobic layer.

[0014] In one of the embodiments of the first aspect, the electrowetting structure further includes:

[0015] A voltage control component is used to change the voltage difference between the first conductive plate and the second conductive plate and adjust the current magnitude.

[0016] In one embodiment of the first aspect, the voltage control component adjusts the voltage difference between the first conductive plate and the second conductive plate to make the oil layer have a flat state or an aggregated state so as to cover or expose the light-emitting unit.

[0017] In one embodiment of the first aspect, the display structure further includes a brightness control component. The brightness control component includes a photosensitive unit and an adjustment unit, and the photosensitive unit and the adjustment unit are electrically connected.

[0018] In one embodiment of the first aspect, the photosensitive unit is used to detect the external light intensity;

[0019] The adjustment unit adjusts the brightness of the light-emitting unit according to the external light intensity.

[0020] In one embodiment of the first aspect, the display structure further includes:

[0021] A display wall which is arranged on the first conductive plate and located inside the accommodation cavity. The display wall is annular and surrounds the light-emitting unit and the oil layer on its periphery.

[0022] In one embodiment of the first aspect, the light-emitting unit is connected to the inner side wall of the display wall.

[0023] In a second aspect, an embodiment of the present application further provides a light-emitting device, including:

[0024] A plurality of the display structures described in any one of the above embodiments;

[0025] A driving chip which is electrically connected to a plurality of the light-emitting units.

[0026] Compared with the prior art, the beneficial effects of the present application are as follows: By arranging a light-emitting unit inside the display unit, the present application realizes various application scenarios of the display structure. When the external ambient light intensity is high, the light can be reflected through the substrate for emission. When the external light intensity is low or there is no external ambient light, the light-emitting unit can be enhanced through the built-in light source, meeting the application of the display structure in an environment with low external light intensity. Description of the Drawings

[0027] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0028] Figure 1 Shows the structural schematic diagram of the display structure in some embodiments of the present application Figure 1 ;

[0029] Figure 2 Shows the structural schematic diagram of the display structure in some embodiments of the present application Figure 2 ;

[0030] Figure 3 Shows the schematic diagram of the assembly structure of the oil layer, light-emitting unit and imaging wall in some embodiments of the present application;

[0031] Figure 4 Shows the structural schematic diagram of the brightness control component in some embodiments of the present application.

[0032] Main element symbol description:

[0033] 100 - Display structure; 110 - Display unit; 111 - Sealing frame; 112 - Substrate; 113 - First conductive plate; 114 - Second conductive plate; 115 - Hydrophobic layer; 116 - Conductive liquid; 117 - Oil layer; 120 - Light-emitting unit; 130 - Imaging wall; 140 - Brightness control component. Detailed implementation manners

[0034] The following will describe in detail the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0037] In this application, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0039] The embodiments of this application provide a display structure 100, which can be used for light-emitting display without external ambient light. The display structure 100 provided by this application can enhance the light-emitting intensity through a built-in light source, meeting the application of the display structure 100 in an environment with a low external light intensity.

[0040] As Figure 1 shown, the display structure 100 includes a display unit 110 and a light-emitting unit 120. Among them, the display unit 110 includes a substrate 112 and an electro-wetting structure (not shown in the figure). The electro-wetting structure is disposed on the light-emitting surface of the substrate 112. The electro-wetting structure includes a hydrophobic layer 115, an oil layer 117, and a first conductive plate 113. The first conductive plate 113, the hydrophobic layer 115, and the oil layer 117 are sequentially stacked on the substrate 112. The light-emitting unit 120 is disposed on the first conductive plate 113. The oil layer 117 has a flat state or an aggregated state to cover or expose the light-emitting unit 120.

[0041] By arranging the light-emitting unit 120 inside the display unit 110 in this application, various application scenarios of the display structure 100 can be realized. Whether there is external ambient light or not, the light-emitting intensity can be changed by the built-in light-emitting unit 120 to meet the application of the display structure 100 in various environments.

[0042] In some embodiments, the substrate 112 can be selectively set according to the external ambient light intensity. In an application environment with an external light source, the substrate 112 can be an opaque material to reflect the external light for display. In an application environment without an external light source, the light-transmitting property of the substrate 112 is not limited, and the light-emitting unit 120 can be directly used for light-emitting display.

[0043] In some embodiments, such as Figure 1 and Figure 2 shown, the electro-wetting structure further includes a sealing frame 111, a second conductive plate 114, and a conductive liquid 116.

[0044] The sealing frame 111 surrounds the outer peripheral edge of the substrate 112. The second conductive plate 114 is a transparent conductive plate, and the second conductive plate 114 covers the top of the sealing frame 111. The first conductive plate 113, the sealing frame 111, and the second conductive plate 114 define an accommodation cavity.

[0045] The conductive liquid 116 is filled in the accommodation cavity to electrically connect the conductive liquid 116, the first conductive plate 113, and the second conductive plate 114. By changing the voltage difference between the first conductive plate 113 and the second conductive plate 114, the current magnitude of the first conductive plate 113 is adjusted.

[0046] The substrate 112 is tightly arranged on the side away from the light-emitting surface of the sealing frame 111, and the light-emitting unit 120 is arranged in the accommodation cavity.

[0047] Exemplarily, in combination with Figure 2 , the sealing frame 111 can be formed by splicing a plurality of plate members. Specifically, the number of plate members can be set according to the frame shape. In this embodiment, the sealing frame 111 can be a rectangular frame structure composed of four planar plate members. The sealing frame 111 can be made of an opaque material to block or absorb the peripheral light of the display structure 100, prevent the light of the display structure 100 from scattering, improve the light utilization rate, and enhance the display effect.

[0048] Combined with Figure 1 and Figure 2 shown, the oil layer 117 and the hydrophobic layer 115 are immiscible with each other, and the oil layer 117 is arranged on the side of the hydrophobic layer 115 away from the first conductive plate 113.

[0049] In this embodiment, the conductive liquid 116 is an aqueous solution, and the second conductive plate can be an ITO material layer. The first conductive plate 113 covers the top light-emitting surface of the sealing frame 111, and the electrowetting display unit 110 is connected to an external power supply through the first conductive plate 113 and the second conductive plate 114, so that during the power-on process, the morphological change of the ink is realized.

[0050] Electrowetting display technology is the natural force inherent in the interface between the oil layer 117 and water and the methods developed to utilize these forces. Using the hydrophobic layer 115 as a functional structure of the display device, water cannot wet its surface without power supply, and water and the oil phase are immiscible, which forms a structure with oil on top of water.

[0051] As Figure 2 shown, when no driving voltage is applied, in the electrowetting display unit 110, since the sum of the interfacial tensions of the oil layer 117 and water and the interfacial tension of the oil and the hydrophobic layer 115 is less than the interfacial tension of the water and the hydrophobic layer 115, the oil droplets can automatically spread out between the water layer and the hydrophobic layer 115. When light irradiates this display unit 110, the display unit 110 shows the color of the oil. Therefore, according to actual requirements, an appropriate oil film color can be selected, such as red, blue, green, purple, etc., to form different light colors during operation.

[0052] As Figure 3 shown, after applying the driving voltage, the original equilibrium state is broken. The electrowetting display unit 110 will reduce its total energy by making the water contact the surface of the hydrophobic layer 115 to reach a new equilibrium. As a result, the oil droplets will bulge, reducing the contact area with the surface of the hydrophobic layer 115. At this time, when light irradiates this display unit 110, it shows the color of the substrate 112.

[0053] In some other embodiments, the display unit 110 can also be one of the structures such as electrowetting display, electrophoretic display, rotating ball display, bistable liquid crystal, and fast-response electron powder fluid display.

[0054] In some embodiments, the height of the light-emitting unit 120 is greater than the height of the hydrophobic layer 115.

[0055] As Figure 1 shown, the light-emitting unit 120 is located within the hydrophobic layer 115 and exposed from the hydrophobic layer 115. The light-emitting unit 120 is exposed to the hydrophobic layer 115, so that the emitted light of the light-emitting unit 120 can be emitted from the first conductive plate 113, avoiding the blocking or refraction of the emitted light by the hydrophobic layer 115.

[0056] In some embodiments, the electro-wetting structure further includes a voltage control component (not shown in the figure) for changing the voltage difference between the first conductive plate 113 and the second conductive plate 114 to adjust the current magnitude.

[0057] Specifically, the voltage control component adjusts the voltage difference between the first conductive plate 113 and the second conductive plate 114 to make the oil layer 117 in a flattened state or an aggregated state, so as to cover or expose the light-emitting unit 120.

[0058] As Figure 4 shown, in some embodiments, the display structure 100 further includes a brightness control component 140 for controlling the light-emitting intensity of the light-emitting unit 120.

[0059] The brightness control component 140 includes a photosensitive unit (not shown in the figure) and an adjustment unit (not shown in the figure), and the photosensitive unit and the adjustment unit are electrically connected.

[0060] Wherein, the photosensitive unit is used to detect the external light intensity; the adjustment unit adjusts the brightness of the light-emitting unit 120 according to the external light intensity.

[0061] Exemplarily, when the luminous intensity of the external light source is relatively high, the brightness control component 140 can reduce the luminous intensity of the light-emitting unit 120 or turn off the light-emitting unit 120. When there is no external light source or the light intensity of the external light source is weak, the brightness control component 140 can increase the luminous intensity of the light-emitting unit 120.

[0062] In another embodiment, the brightness control component 140 includes a control switch for adjusting the luminous intensity of the light-emitting unit 120.

[0063] Exemplarily, the brightness control component 140 can also be a manually controlled control switch, so as to manually judge the light-emitting state of the display structure 100 and perform corresponding control and adjustment.

[0064] Combined Figure 1 and Figure 3 shown, in some embodiments, the display structure 100 further includes an image display wall 130 disposed on the first conductive plate 113 and located in the accommodation cavity. The image display wall 130 is annular and surrounds the periphery of the light-emitting unit 120 and the oil layer 117.

[0065] In some embodiments, the light-emitting unit 120 is connected to the inner side wall of the image display wall 130. The image display wall 130 is disposed adjacent to the sealing frame 111 and surrounds the periphery of the light-emitting unit 120, thereby restricting the light emission range of the light-emitting unit 120 to form a pattern adapted to the isolation wall structure during the light-emitting process.

[0066] AsFigure 1 As shown, in one embodiment, one light-emitting unit 120 is disposed in each sealing frame 111, and the imaging wall 130 is disposed on the inner side of the sealing frame 111 in a fitting manner.

[0067] As Figure 2 shown, in another embodiment, a plurality of light-emitting units 120 are disposed in one sealing frame 111, and an imaging wall 130 is provided on the peripheral side of each light-emitting unit 120, so as to form an isolation wall array structure in the sealing frame 111.

[0068] In some embodiments, the second conductive plate 114 is a transparent conductive plate, and the substrate 112 is a non-transparent material plate.

[0069] Exemplarily, the display structure 100 can be applicable to a reflective display structure 100. In an environment with an external light source, when the display unit 110 is powered on, the substrate 112 is exposed, and the light is reflected on the substrate 112 to form a reflective display.

[0070] Adaptively, the substrate 112 can be selected in different colors to form different light colors during operation.

[0071] In some embodiments, the substrate 112 is a transparent material plate.

[0072] Exemplarily, in this embodiment, the display structure 100 does not need to perform a reflective display, and can directly perform corresponding display through the light-emitting operation of the light-emitting unit 120.

[0073] The embodiment of the present application further provides a light-emitting device, including a plurality of display structures 100 or light-emitting panels in any one of the above embodiments, and the light-emitting device further includes a driving chip, and the driving chip is electrically connected to a plurality of light-emitting units 120.

[0074] During the working process of the light-emitting device, the light-emitting work of the light-emitting unit 120 can be controlled by the driving chip. The driving chip can separately control the light-emitting operation of a single light-emitting unit 120 or the simultaneous operation of multiple light-emitting units 120.

[0075] In the present application, the light-emitting unit 120 can be a Micro-LED (Micro-Light Emitting Diode, micro light-emitting diode) chip, and the driving chip can be a CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor) driving board or a TFT (Thin Film Transistor, thin film transistor) driving board.

[0076] In this embodiment, it has the display structure 100 in any of the above embodiments. Therefore, it has all the beneficial effects of the display structure 100 in any of the above embodiments, and will not be elaborated one by one here.

[0077] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0078] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A display structure, characterized in that: include: A display unit, the display unit comprising a substrate and an electrowetting structure, the electrowetting structure being arranged on a light-emitting surface of the substrate, the electrowetting structure comprising a first conductive plate, a hydrophobic layer and an oil layer, the first conductive plate, the hydrophobic layer and the oil layer being sequentially stacked on the substrate; The light-emitting unit is arranged on a side of the first conductive plate away from the substrate, and the oil layer has a flat state or a gathered state to cover or expose the light-emitting unit.

2. The display structure according to claim 1, characterized in that: The electrowetting structure further comprises: A sealing frame, the sealing frame being arranged around the outer periphery of the substrate; A second conductive plate, wherein the second conductive plate is covered on the top of the sealing frame; the first conductive plate, the sealing frame and the second conductive plate define a receiving cavity; Conductive liquid is filled in the containing cavity, and the conductive liquid, the first conductive plate and the second conductive plate are electrically connected.

3. The display structure according to claim 1, characterized in that: The height of the light emitting unit is greater than the height of the hydrophobic layer.

4. The display structure according to claim 2, characterized in that: The electrowetting structure further comprises: The voltage control component is used to change the voltage difference between the first conductive plate and the second conductive plate to adjust the current.

5. The display structure according to claim 4, characterized in that: The voltage control component adjusts the voltage difference between the first conductive plate and the second conductive plate to make the oil layer in a flat state or a gathered state to cover or expose the light-emitting unit.

6. The display structure according to claim 4, characterized in that: The electrowetting structure further includes a brightness control component, which includes a photosensitive unit and an adjustment unit, and the photosensitive unit and the adjustment unit are electrically connected.

7. The display structure according to claim 6, characterized in that: The photosensitive unit is used to detect the intensity of external light; The adjustment unit adjusts the brightness of the light emitting unit according to the intensity of the external light.

8. The display structure according to any one of claims 4 to 7, characterized in that: The display structure also includes: The image display wall is arranged on the first conductive plate and is located in the accommodating cavity. The image display wall is ring-shaped and surrounds the light-emitting unit and the oil layer.

9. The display structure according to claim 8, characterized in that: The light emitting unit is connected to the inner wall of the display wall.

10. A light emitting device, characterized in that: include: The display structure according to any one of claims 1 to 9; A driving chip is electrically connected to the light emitting unit.

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