Display device
By combining flexible solar modules with electronic paper displays, the problem of increased optical adhesive thickness in large-size electronic paper displays has been solved, resulting in cost reduction and performance improvement, making it suitable for outdoor display devices.
Patent Information
- Application Number
- CN202520240676.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-14
AI Technical Summary
As the demand for larger commercial electronic paper displays grows, the area of solar modules increases, and glass warping issues lead to increased optical adhesive thickness, raising manufacturing costs and reducing display quality and power generation efficiency.
The flexible solar module is combined with the electronic paper display. Flexible materials and selective light reflection modules are used to simplify the bonding process through an adhesive layer, reduce the thickness of the optical adhesive, and improve the bonding strength.
It simplifies the bonding process, reduces manufacturing costs, improves product yield, maintains display quality and power generation efficiency, and is suitable for long-term outdoor applications.
Smart Images
Figure CN223829706U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a display device, and more particularly to a display device that simplifies the lamination process and improves yield. BACKGROUND
[0002] In the application of outdoor semi-transparent backlit electronic paper display combined with solar modules, in order to achieve the function of continuous display without external power supply, the solar module is usually installed on the back of the electronic paper display. However, as the size demand of commercial electronic paper display increases, in order to provide sufficient power, the required area of the solar module must also increase accordingly. This requirement poses a considerable technical challenge to the manufacturing and installation process of the solar module.
[0003] The solar module in the prior art usually uses reinforced glass as a protective layer to ensure the structural strength of the solar module. However, as the size of the solar module expands, the degree of warping of the glass also increases, which makes it necessary to use thicker and more expensive optical glue to compensate for the problems caused by glass warping when laminating the solar module with the electronic paper display. This thick optical glue not only greatly increases the manufacturing cost, but also may affect the contrast ratio of the electronic paper display, thereby reducing the display effect. In addition, the increase in the thickness of the optical glue increases the loss in the process of light transmission, further reducing the power generation efficiency of the solar module, so relevant manufacturers are seeking solutions. UTILITY MODEL CONTENT
[0004] Therefore, the purpose of the present disclosure is to provide a display device that laminates a flexible solar module with an electronic paper display. The lamination method that combines flexible and rigid materials can effectively simplify the lamination process, improve yield, and reduce manufacturing costs.
[0005] According to an embodiment of the structural style of the present disclosure, a display device is provided, comprising a flexible solar module and a selective light reflection module. The flexible solar module comprises a solar cell and an encapsulation layer. Both surfaces of the solar cell are light-absorbing surfaces. The encapsulation layer covers one of the two surfaces of the solar cell. The selective light reflection module is arranged on one surface of the flexible solar module.
[0006] Other implementations of the foregoing embodiment are as follows: the foregoing solar cell comprises a polymer layer, a plurality of solar cells, and at least one first light-tight layer. The polymer layer has a first surface and a second surface opposite to each other, and the encapsulation layer covers the first surface. The solar cells are spaced and embedded in the polymer layer. The at least one first light-tight layer is adjacent to the second surface.
[0007] Other implementations of the foregoing embodiment are as follows: the at least one first light-tight layer covers the second surface.
[0008] Other implementations of the aforementioned implementation include that the number of the aforementioned at least one first light-blocking layer is multiple, and the aforementioned first light-blocking layers are embedded in the polymer layer at intervals and are connected to the second surface partially. The projections of the aforementioned first light-blocking layers on the second surface partially overlap the projections of the aforementioned solar cells on the second surface.
[0009] Other implementations of the aforementioned implementation include that the aforementioned display device further comprises an adhesive layer, the adhesive layer is arranged between the flexible solar module and the selective light reflection module, and the thickness of the adhesive layer is between 0.3 mm and 1.8 mm.
[0010] Another implementation of the structural pattern according to the present disclosure provides a display device, comprising a flexible solar module and two cholesteric liquid crystal display modules. The flexible solar module comprises a solar cell and two encapsulation layers. The two surfaces of the solar cell are light-absorbing surfaces. The two encapsulation layers are arranged on the two surfaces of the solar cell, respectively. The two cholesteric liquid crystal display modules are arranged on the other surfaces of the two encapsulation layers, respectively, with respect to the solar cell.
[0011] Other implementations of the aforementioned implementation include that the aforementioned solar cell comprises a polymer layer, a plurality of solar cells, and a plurality of first light-blocking layers. The polymer layer has a first surface and a second surface opposite to each other, and the two encapsulation layers cover the first surface and the second surface, respectively. The plurality of solar cells are embedded in the polymer layer at intervals. The plurality of first light-blocking layers are arranged on the first surface and the second surface.
[0012] Other implementations of the aforementioned implementation include that the aforementioned first light-blocking layer is embedded in the polymer layer or the two encapsulation layers.
[0013] Other implementations of the aforementioned implementation include that the aforementioned first light-blocking layer is connected to the first surface and the second surface partially, respectively, wherein the projections of the aforementioned first light-blocking layers on the first surface partially overlap the projections of the aforementioned solar cells on the first surface, and the projections of the aforementioned first light-blocking layers on the second surface partially overlap the projections of the aforementioned solar cells on the second surface.
[0014] Other implementations of the aforementioned implementation include that the aforementioned display device further comprises an adhesive layer, the adhesive layer is arranged between the flexible solar module and the cholesteric liquid crystal display module, and the thickness of the adhesive layer is between 0.3 mm and 1.8 mm. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a schematic diagram of a display device in a first embodiment of a first implementation according to the present disclosure;
[0016] Figure 2It is a drawing along Figure 1 Schematic cross-section of the display device as shown in section line 2-2;
[0017] Figure 3 This is a schematic diagram illustrating a display device in a second embodiment of the first embodiment according to the present disclosure;
[0018] Figure 4 This is a cross-sectional schematic diagram illustrating the display device in the first embodiment of the second embodiment according to the present disclosure; and
[0019] Figure 5 This is a cross-sectional schematic diagram illustrating a display device in a second embodiment of the second embodiment according to the present disclosure.
[0020] The reference numerals in the attached figures are explained as follows:
[0021] 100, 100a, 100b, 100c: Display devices
[0022] 110: Flexible solar modules
[0023] 111: Solar Panel
[0024] 112: Encapsulation layer
[0025] 113: Polymer layer
[0026] 1131: First Surface
[0027] 1132: Second Surface
[0028] 114: Solar cells
[0029] 115: First opaque layer
[0030] 120: Selective light reflection module
[0031] 130: Adhesive layer
[0032] 140: Cholesterol LCD display module
[0033] OL: Overlapping area Detailed Implementation
[0034] Several embodiments of this disclosure will be described below with reference to the accompanying drawings. For clarity, many practical details will be set forth in the following description. However, it should be understood that these practical details should not be used to limit the scope of this disclosure. That is, in some embodiments of this disclosure, these practical details are not essential. Furthermore, for the sake of simplicity in the drawings, some conventional structures and elements will be illustrated in a simple schematic manner; and repeated elements may be denoted by the same reference numerals.
[0035] Furthermore, in this document, when a component (or unit or module, etc.) is "connected / linked" to another component, it can mean that the component is directly connected / linked to the other component, or it can mean that the component is indirectly connected / linked to the other component, that is, there is another component between the component and the other component. Only when it is explicitly stated that a component is "directly connected / linked" to another component does it indicate that there is no other component between the component and the other component. The terms "first," "second," and "third" are only used to describe different components and do not limit the components themselves; therefore, "first component" can also be referred to as "second component." Moreover, the combinations of components / units / circuits in this document are not combinations generally known, conventional, or customary in this field. Whether the components / units / circuits themselves are customary cannot be used to determine whether their combination relationships are easily performed by someone of ordinary skill in the art.
[0036] Please see Figure 1 As shown, where Figure 1 This is a schematic diagram illustrating a display device in a first embodiment according to the first embodiment of the present disclosure; and Figure 2 It is a drawing along Figure 1 The diagram shows a cross-sectional view of the display device along section line 2-2. The display device 100 includes a flexible solar module 110 and a selective light reflection module 120. The flexible solar module 110 includes a solar cell 111 and an encapsulation layer 112. The encapsulation layer 112 covers one surface of the solar cell 111. The selective light reflection module 120 is disposed on one surface of the flexible solar module 110.
[0037] The solar cell 111 includes a polymer layer 113, a plurality of solar cells 114, and at least one first opaque layer 115. The polymer layer 113 has a first surface 1131 and a second surface 1132 opposite to each other, with an encapsulation layer 112 covering the first surface 1131. The plurality of solar cells 114 are spaced apart and embedded in the polymer layer 113. At least one first opaque layer 115 is adjacent to the second surface 1132; more specifically, both surfaces of the solar cell 111 may be light-absorbing surfaces, but this disclosure is not limited thereto. The polymer layer 113 is ethylene / vinyl acetate copolymer (EVA), but may also be, for example, polyolefin elastomer (POE) or polyvinylidene fluoride (PVF), but is not limited thereto. The solar cells 114 may be silicon wafer solar cells or advanced solar cells with a bifacial light-absorbing composite material architecture. Solar cells with a bifacial light-absorbing composite material architecture can absorb light from the front and effectively absorb reflected light from the back, thereby improving overall power generation efficiency. Solar cells with a bifacial light-absorbing composite material architecture are fabricated from one of the following materials: silicon wafer tandem perovskite solar cells, silicon wafer tandem amorphous silicon (a-Si) solar cells, or silicon wafer tandem organic photovoltaics (OPV), but this disclosure is not limited to these.
[0038] It is worth mentioning that, although only one first opaque layer 115 is shown in this embodiment, the number of first opaque layers 115 can be increased as needed during actual manufacturing, and each of the first opaque layers 115 can have the same or similar structural configuration. Therefore, this embodiment is not limited to the number and shape of the first opaque layers 115. Furthermore, the first opaque layer 115 can be made of a black elastic polymer and black grid printing, but this disclosure is not limited thereto. This improves the color contrast of the selective light reflection module 120.
[0039] The encapsulation layer 112 is made of polyethylene terephthalate (PET), ethylene tetrafluoroethylene (ETFE), polyolefin elastomer (POE), or polyvinyl fluoride film (PVF). By using these materials, the display device 100 possesses excellent weather resistance and UV resistance, enabling stable operation under extreme climatic conditions (such as high temperature, humidity, or strong UV environments), making it more suitable for long-term outdoor applications.
[0040] Please continue reading. Figure 2 As shown. In the first embodiment of the first implementation, the thickness of the flexible solar module 110 is between 1 mm and 4 mm. This thickness range provides sufficient flexibility, allowing the flexible solar module 110 to flexibly adapt to the selective light reflection module 120. At the same time, it provides ideal durability and impact resistance without sacrificing structural stability and reliability, avoiding the easy damage of an excessively thin flexible solar module 110 or the unnecessary weight added by an excessively thick flexible solar module 110.
[0041] Furthermore, the bending radius of the flexible solar module 110 ranges from 30cm to 300cm. This bending radius configuration allows the flexible solar module 110 to flexibly adapt to surfaces with different curvatures, effectively fitting both compact curved surfaces with small radii and smooth curved surfaces with larger radii, thus expanding its application range. This enables the flexible solar module 110 to be widely used in wearable devices, automotive applications, and various selective light reflection modules 120 requiring curved surfaces. Moreover, the aforementioned bending radius configuration range improves installation convenience, simplifying the installation process for both flat and curved surfaces, reducing tool and precision requirements, and improving production efficiency.
[0042] The display device 100 further includes an adhesive layer 130 disposed between the flexible solar module 110 and the selective light reflection module 120, and the thickness of the adhesive layer 130 is between 0.3 mm and 1.8 mm. This adhesive layer 130 provides excellent structural stability, enhances the bonding strength between the two modules (i.e., the flexible solar module 110 and the selective light reflection module 120), and ensures long-term stable operation. Furthermore, this thickness range helps reduce optical loss and maintain optical transparency, thereby improving photoelectric conversion efficiency and display effect. At the same time, it avoids stress concentration caused by an excessively thin or thick adhesive layer 130, thereby improving the overall durability and reliability of the display device 100.
[0043] Specifically, the adhesive layer 130 is made of optically clear adhesive (OCA), but is not limited to this. By using optical adhesive as the bonding material between the flexible solar module 110 and the selective light reflection module 120, it has the advantages of high transparency and low optical loss, effectively and stably bonding the flexible solar module 110 and the selective light reflection module 120 together while maintaining excellent optical performance, ensuring that the display effect is not affected.
[0044] The selective light reflection module 120 uses a cholesterol liquid crystal display (ChLCD) panel, but is not limited to this.
[0045] It should be noted that, in Figure 2 In one embodiment, the first opaque layer 115 covers the second surface 1132, but this is not a limitation. Please refer to... Figure 3 As shown, where Figure 3 This is a schematic diagram illustrating a display device in a second embodiment according to the first embodiment of this disclosure. Compared to the foregoing Figure 2 The display device 100, Figure 3 The display device 100a has multiple first opaque layers 115, which are embedded in the polymer layer 113 at intervals and partially connected to the second surface 1132. The projection of the first opaque layer 115 onto the second surface 1132 overlaps with the projection of the solar cell 114 onto the second surface 1132. Specifically, each first opaque layer 115 is disposed between two adjacent solar cells 114. The projection of the first opaque layer 115 onto the second surface 1132 overlaps with the outer edge of the projection of the solar cell 114 onto the second surface 1132, forming multiple overlapping areas OL. By disposing the first opaque layer 115 in the gaps between the multiple solar cells 114 to define opaque areas, light leakage between the gaps can be eliminated, thereby avoiding the problem of uneven screen display in the display device 100a.
[0046] Please see Figure 4 As shown, where Figure 4 This is a schematic cross-sectional view illustrating the display device in the first embodiment of the second embodiment according to this disclosure. Compared to the foregoing Figure 2 The display device 100, Figure 4The display device 100b is a double-sided display, comprising a flexible solar module 110 and a dichotic liquid crystal display module 140. The flexible solar module 110 includes a solar cell 111 and two encapsulation layers 112. The two encapsulation layers 112 are respectively disposed on opposite surfaces of the solar cell 111. The dichotic liquid crystal display module 140 is disposed on the other surface of the two encapsulation layers 112 relative to the solar cell 111; more specifically, both surfaces of the solar cell 111 may be light-absorbing surfaces, but this disclosure is not limited thereto. In application, the double-sided display device 100b can be configured with one side facing outdoors and the other facing indoors, simultaneously receiving sunlight from outdoors and indoor lighting from indoors. In outdoor applications, the double-sided display device can be configured with one side facing east and the other facing west, so that one side of the display device faces the sun in the morning or evening.
[0047] It should be noted that the aforementioned Figure 2 Selective light reflection module 120 and Figure 4 Although the cholesterol liquid crystal display module 140 has different names and symbols, it can refer to the same type of structure.
[0048] Please continue reading. Figure 4 As shown. Compared to the aforementioned Figure 2 The display device 100, in Figure 4 In this embodiment, the two encapsulation layers 112 of the display device 100b respectively cover the first surface 1131 and the second surface 1132 of the polymer layer 113. Multiple solar cells 114 are spaced apart and embedded in the polymer layer 113. Multiple first opaque layers 115 are disposed on the first surface 1131 and the second surface 1132. Specifically, the multiple solar cells 114 can convert ambient light from outdoors and indoors, which passes through the dichotomous liquid crystal display module 140 and the two adhesive layers 130 respectively, into electrical energy, thereby maximizing power generation efficiency and achieving energy conservation and carbon reduction.
[0049] Figure 4Multiple first opaque layers 115 are respectively partially connected to the first surface 1131 and the second surface 1132, and the projections of the multiple first opaque layers 115 on the second surface 1132 overlap with the projections of the solar cells 114 on the second surface 1132. The projections of the multiple first opaque layers 115 on the first surface 1131 also overlap with the projections of the solar cells 114 on the first surface 1131. Specifically, each first opaque layer 115 is correspondingly disposed between two adjacent solar cells 114. The projections of the first opaque layers 115 on the second surface 1132 overlap with the outer edge of the projection of the solar cells 114 on the second surface 1132, forming multiple overlapping areas OL. The projections of the first opaque layers 115 on the first surface 1131 overlap with the outer edge of the projection of the solar cells 114 on the first surface 1131, forming multiple overlapping areas (not shown separately).
[0050] It must be stated that, Figure 4 The remaining components and structural configuration of the display device 100b are the same as those described above. Figure 2 The display device 100 is the same as or similar to the display device 100, and will not be described in detail here.
[0051] Figure 4 The multiple first opaque layers 115 of the display device 100b are respectively embedded in the second encapsulation layer 112, but are not limited thereto. (See also...) Figure 5 As shown, where Figure 5 This is a cross-sectional schematic diagram illustrating a display device in a second embodiment according to the second embodiment of this disclosure. Figure 5 The multiple first opaque layers 115 of the display device 100c are embedded in the polymer layer 113.
[0052] It must be stated that, Figure 5 The remaining components and structural configuration of the display device 100c are the same as those described above. Figure 4 The display device 100b is the same as or similar to the display device 100b, and will not be described in detail here.
[0053] In summary, the display device disclosed herein has the following advantages: First, the use of flexible solar modules for bonding effectively simplifies the process and improves product yield; second, it effectively reduces the thickness of the adhesive layer, thereby reducing costs and improving optical performance; and third, the flexible solar modules do not use glass, possessing thinner and lighter characteristics, thus improving the product's portability and convenience.
[0054] Although the present disclosure has been described above with reference to embodiments, it is not intended to limit the present disclosure. Any person skilled in the art may make various modifications and alterations without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be determined by the appended claims.
Claims
1. A display device, characterized in that, Include: A flexible solar module includes a solar cell and an encapsulation layer, wherein both surfaces of the solar cell are light-absorbing surfaces, and the encapsulation layer covers one of the two surfaces of the solar cell; and A selective light reflection module is disposed on one surface of the flexible solar module.
2. The display device as claimed in claim 1, characterized in that, The solar cell unit includes: A polymer layer having a first surface and a second surface opposite to each other, wherein the encapsulation layer covers the first surface; Multiple solar cells are embedded at intervals in the polymer layer; and At least one first opaque layer is adjacent to the second surface.
3. The display device as claimed in claim 2, characterized in that, The at least one first opaque layer covers the second surface.
4. The display device as claimed in claim 2, characterized in that, The number of the at least one first opaque layer is multiple, and they are embedded in the polymer layer at intervals and connected to the second surface. The projection of the multiple first opaque layers on the second surface overlaps with the projection of the multiple solar cells on the second surface.
5. The display device as claimed in claim 1, characterized in that, It also includes: An adhesive layer is disposed between the flexible solar module and the selective light reflection module, and the thickness of the adhesive layer is between 0.3 mm and 1.8 mm.
6. A display device, characterized in that, Include: A flexible solar module includes a solar cell and two encapsulation layers. Both surfaces of the solar cell are light-absorbing surfaces, and the two encapsulation layers are respectively disposed on the two surfaces of the solar cell. The dicholesterol liquid crystal display module is disposed on the other surface of the two encapsulation layers, respectively, relative to the solar cell.
7. The display device as claimed in claim 6, characterized in that, The solar cell unit includes: A polymer layer having a first surface and a second surface opposite to each other, wherein the two encapsulation layers respectively cover the first surface and the second surface; Multiple solar cells are embedded at intervals in the polymer layer; and Multiple first opaque layers are disposed on the first surface and the second surface.
8. The display device as claimed in claim 7, characterized in that, The plurality of first opaque layers are embedded in the polymer layer or the second encapsulation layer.
9. The display device as claimed in claim 8, characterized in that, The plurality of first opaque layers are respectively connected to the first surface and the second surface. The projection of the plurality of first opaque layers connected to the first surface onto the first surface overlaps with the projection of the plurality of solar cells onto the first surface. The projection of the plurality of first opaque layers connected to the second surface onto the second surface overlaps with the projection of the plurality of solar cells onto the second surface.
10. The display device as claimed in claim 6, characterized in that, It also includes: An adhesive layer is disposed between the flexible solar module and the cholesteric liquid crystal display module, and the thickness of the adhesive layer is between 0.3 mm and 1.8 mm.