TWM582725U - Solar cell and display including the same - Google Patents

Abstract

A solar cell including a top electrode layer, a photoelectric conversion layer, a bottom electrode layer and an anti-reflection layer is provided. The photoelectric conversion layer is disposed between the top electrode layer and the bottom electrode layer. The anti-reflection layer is disposed on a surface of the bottom electrode layer far away from the photoelectric conversion layer. A reflectance of the anti-reflection layer is 5%~60%. A display including the solar cell is also provided.

Description

Solar cell and display including the same

The creation of this new type relates to a solar cell and a display including the solar cell, in particular to a solar cell attached or arranged on the surface of an object or on a display panel.

The solar cell attached or disposed on the surface of the object shields part of the light incident on the object and absorbs the light reflected by the object, so that the luminous flux entering the user's eyes is reduced, and the user feels insufficient brightness. In order to avoid the above situation, the conventional technique is to make the electrode close to the object include a metal material with high reflectivity (for example: aluminum), and the light reflected by the object is reflected again by the electrode to make it come out of the solar cell Exit, which in turn increases the luminous flux. However, in the case where adjacent objects have different colors (ie, reflect different colors of light), the light reflected again by the above electrode will be irradiated to another object and then reflected, so that the user feels the display quality Not good.

Similarly, displays including solar cells have the above-mentioned problems. In detail, the solar cell is attached or installed on the display surface of the display panel, and the incident light reflected by the sub-pixels displaying a color is reflected to display another color through an electrode including a metal material with high reflectivity Of the sub-pixels, which will disturb the image to be displayed by the sub-pixels and degrade the display quality of the display.

The novel creation provides a solar cell, which can make the light reflected by the attached or installed object not affect the adjacent object, and let the user feel good display quality.

The novel creation provides a display including the foregoing solar cell, which can make users feel good display quality.

The solar cell created by the novel includes an upper electrode layer, a photoelectric conversion layer, a lower electrode layer, and an anti-reflection layer. The photoelectric conversion layer is disposed between the upper electrode layer and the lower electrode layer. The anti-reflection layer is disposed on the surface of the lower electrode layer away from the photoelectric conversion layer. The reflectivity of the anti-reflection layer is 5% to 60%.

In an embodiment of the invention, the material of the anti-reflection layer is at least one selected from the group consisting of molybdenum, molybdenum oxide, silicon nitride, silicon oxide, or the above materials.

In an embodiment of the invention, the anti-reflection layer includes a first layer and a second layer. The first layer is farther from the surface of the lower electrode layer than the second layer. The material of the first layer includes silicon nitride or silicon oxide, and the material of the second layer includes molybdenum oxide.

In an embodiment of the invention, the above-mentioned protective layer is disposed between the lower electrode layer and the photoelectric conversion layer. The material of the protective layer includes molybdenum.

In an embodiment of the novel creation, it further includes multiple photoelectric conversion layers.

In an embodiment of the invention, an electrode layer is provided between the above-mentioned adjacent photoelectric conversion layers.

In an embodiment of the present invention, the material of the photoelectric conversion layer includes single crystal silicon, polycrystalline silicon, amorphous silicon, copper indium gallium selenide, or cadmium antimonide.

The display created by the novel includes a display panel and the solar cell described above. The solar cell is provided on the side of the display surface of the display panel, wherein the upper electrode layer of the solar cell is farther from the side of the display surface of the display panel than the lower electrode layer.

In an embodiment of the invention, the above display panel includes an active element array substrate, a color filter substrate, and a display medium layer. The display medium layer is disposed between the active device array substrate and the color filter substrate.

In an embodiment of the novel creation, the above-mentioned display medium layer includes an organic material or an inorganic material.

Based on the above, since the back surface of the solar cell is provided with an anti-reflective layer with a reflectivity ranging from 5% to 60%, the user observes the opacity on the side of the back surface of the solar cell from the side of the light receiving surface In the case of objects, opaque objects with one color can enter the photoelectric conversion layer of the solar cell through the anti-reflection layer and be absorbed, which can prevent users from getting poor display when observing the above objects quality.

In order to make the above-mentioned features and advantages of the creation of the new model more obvious and understandable, the embodiments are specifically described below and described in detail in conjunction with the attached drawings.

In the drawings, the thickness of layers, films, regions, etc., are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same components. It should be understood that when a member such as a layer, film, or region is referred to as being “on” or “connected to” another member, it can be directly on or connected to the other member, or intervening members Can also exist. In contrast, when a component is referred to as being "directly on" or "directly connected to" another component, there are no intervening components.

FIG. 1 is a schematic cross-sectional view of a solar cell according to an embodiment of the new creation.

As shown in FIG. 1, the solar cell 100 a of this embodiment includes a carrier 110, an upper electrode layer 120, a photoelectric conversion layer 130, a lower electrode layer 140 and an anti-reflection layer 150. The solar cell 100a of this embodiment may be, for example, used to fit or be disposed on the surface of an object or the display surface of a display panel.

In one embodiment, the carrier 110 is a light-transmissive glass substrate. The carrier board 110 may be, for example, a rigid substrate or a flexible substrate, but the present invention is not limited thereto. In this embodiment, the upper electrode layer 120, the photoelectric conversion layer 130, the lower electrode layer 140, and the anti-reflection layer 150 are sequentially disposed on the backlight surface of the carrier board 110. In addition, each stack structure composed of the upper electrode layer 120, the photoelectric conversion layer 130, the lower electrode layer 140, and the anti-reflection layer 150 is, for example, a solar cell, as shown in FIG. 1, which shows five solar cells , But the new model is not limited to this.

The upper electrode layer 120 and the lower electrode layer 140 are disposed on the carrier 110, for example. The materials of the upper electrode layer 120 and the lower electrode layer 140 are preferably materials with a small resistance. In an embodiment, the materials of the upper electrode layer 120 and the lower electrode layer 140 may be, for example, aluminum, silver, chromium, or alloys thereof. The materials of the upper electrode layer 120 and the lower electrode layer 140 may be the same as or different from each other, but the present invention is not limited thereto.

The photoelectric conversion layer 130 is provided between, for example, the upper electrode layer 120 and the lower electrode layer 140. In one embodiment, the material of the photoelectric conversion layer 130 includes single crystal silicon, polycrystalline silicon, amorphous silicon, copper indium gallium selenide, or cadmium antimonide. In this embodiment, the material of the photoelectric conversion layer 130 is amorphous silicon. For example, the photoelectric conversion layer 130 may include a first extrinsic semiconductor layer, a second extrinsic semiconductor layer, and an intrinsic semiconductor layer, where the first extrinsic semiconductor layer has a first doping type and the second non-intrinsic semiconductor layer The intrinsic semiconductor layer has a second doping type. The aforementioned first doping type and second doping type are each one of P-type and N-type. In one embodiment, the first doping type is P-type and the second doping type is N-type, but the present invention is not limited thereto.

The anti-reflection layer 150 is disposed on the surface of the lower electrode layer 140 away from the photoelectric conversion layer 130, for example. In one embodiment, the reflectivity of the anti-reflection layer 150 is 5% to 60%. To make the reflectivity of the anti-reflection layer 150 fall within the above range, the material of the anti-reflection layer 150 is at least one selected from the group consisting of molybdenum, molybdenum oxide, silicon nitride, silicon oxide, or the above materials, The reflective layer 150 may be, for example, a single-layer structure or a multi-layer structure. In one embodiment, the anti-reflection layer 150 may be a single-layer structure including molybdenum. In another embodiment, the anti-reflection layer 150 may be a single layer structure including molybdenum oxide. In yet another embodiment, the anti-reflection layer 150 may be a stacked structure composed of molybdenum oxide and silicon nitride. In yet another embodiment, the anti-reflection layer 150 may be a stacked structure composed of molybdenum oxide and silicon oxide.

In this embodiment, since the anti-reflective layer with a reflectivity between 5% and 60% is provided on the backlight surface of the solar cell, the user observes When the object is opaque, the opaque object with a color can enter the photoelectric conversion layer in the solar cell through the anti-reflection layer and be absorbed, without passing through the lower electrode in the solar cell The reflection of the layer affects the adjacent opaque objects with another color, which can prevent the user from obtaining poor display quality when observing the above objects.

2 is a schematic cross-sectional view of a solar cell according to another embodiment of the new creation. It must be noted here that the embodiment of FIG. 2 uses the element numbers and partial contents of the embodiment of FIG. 1, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the description and effects of the foregoing embodiments, and the following embodiments will not be repeated, and at least a part of the descriptions in the embodiment of FIG. 2 that are not omitted may refer to the subsequent content.

Please refer to FIG. 2. In the embodiment shown in FIG. 2, the difference between the solar cell 100 b and the solar cell 100 a is that the solar cell 100 b further includes a protective layer 160. The protective layer 160 is provided between the lower electrode layer 140 and the photoelectric conversion layer 130, for example. The protective layer 160 fits the surface of the photoelectric conversion layer 130, for example, and can electrically connect the lower electrode layer 140 and the photoelectric conversion layer 130. Based on the above considerations, the material of the protective layer 160 may include molybdenum. Since the solar cell 100b of this embodiment is provided with the protective layer 160 between the lower electrode layer 140 and the photoelectric conversion layer 130, the possibility of the lower electrode layer 140 corroding the photoelectric conversion layer 130 can be avoided.

3 is a schematic cross-sectional view of a solar cell according to another embodiment of the new creation. It must be noted here that the embodiment of FIG. 3 follows the element numbers and partial contents of the embodiment of FIG. 1, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the description and effects of the foregoing embodiments. The following embodiments will not be repeated, and at least a part of the descriptions in the embodiment of FIG. 3 that are not omitted may refer to the subsequent content.

Please refer to FIG. 3. In the embodiment shown in FIG. 3, the difference between the solar cell 100 c and the solar cell 100 a is that the solar cell 100 c includes two photoelectric conversion layers 132 and 134. Compared with the solar cell 100a, the solar cell 100c in which two photoelectric conversion layers 132 and 134 are stacked in this embodiment can have a higher output power. In detail, the photoelectric conversion layer 134 farther from the carrier board 110 can absorb light reflected by an opaque object having a color, and the photoelectric conversion layer 132 closer to the carrier board 110 can absorb light from the light-receiving side of the solar cell 100c Ambient light.

4 is a schematic cross-sectional view of a solar cell according to yet another embodiment of the new creation. It must be noted here that the embodiment of FIG. 4 uses the element numbers and partial contents of the embodiment of FIG. 3, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the description and effects of the foregoing embodiments. The following embodiments will not be repeated, and at least a part of the descriptions in the embodiment of FIG. 4 that are not omitted may refer to the subsequent content.

Please refer to FIG. 4. In the embodiment shown in FIG. 4, the difference between the solar cell 100 d and the solar cell 100 c is that the solar cell 100 d includes an electrode layer 170 that electrically connects the two photoelectric conversion layers 132 and 134. The electrode layer 170 is provided between the photoelectric conversion layer 132 and the photoelectric conversion layer 134. The material of the electrode layer 170 may be, for example, a transparent material, which includes, for example, indium tin oxide.

5 is a schematic cross-sectional view of an anti-reflection layer according to an embodiment of the new creation.

In this embodiment, the anti-reflection layer 150 has a two-layer structure, but the present invention is not limited thereto, and the anti-reflection layer 150 may have a structure of more than two layers. The anti-reflection layer 150 of this embodiment has, for example, a first layer 152 and a second layer 154. The first layer 152 is farther from the surface of the lower electrode layer 140 than the second layer 154, for example. The materials included in the first layer 152 and the second layer 154 have been described in the foregoing embodiments, and will not be repeated here. For example, the material of the first layer 152 may include silicon nitride or silicon oxide, and the material of the second layer 154 may include molybdenum oxide.

6 is a schematic cross-sectional view of a display according to an embodiment of the new creation. It must be noted here that the embodiment of FIG. 6 uses the element numbers and part of the content of the embodiment of FIG. 1, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the description and effects of the foregoing embodiments. The following embodiments will not be repeated, and at least a part of the descriptions in the embodiment of FIG. 6 that are not omitted can be referred to the subsequent content.

Please refer to FIG. 6. A display 10 according to an embodiment of the present invention includes a solar cell 100 a and a display panel 200. The solar cell 100 a is provided on one side of the display surface of the display panel 200, for example. In detail, the upper electrode layer 120 of the solar cell 100a is farther from the lower electrode layer 140 on the side of the display surface of the display panel 200.

In one embodiment, the display panel 200 includes an active device array substrate 210, a color filter substrate 220, a sealant (not shown), and a display medium layer 230.

The active element array substrate 210 is disposed opposite to the color filter substrate 220, for example. The active device array substrate 210 and the color filter substrate 220 may include glass substrates, for example. For example, a plurality of active elements (not shown), a plurality of scan lines (not shown), a plurality of data lines (not shown), and a plurality of sub-pixels (not shown) are provided on the active element array substrate 210, Each sub-pixel can be electrically connected to the corresponding scan line and the corresponding data line in the active device array substrate 210, but the present invention is not limited to this.

For example, at least three color filter patterns are provided on the color filter substrate 220, such as the color filter patterns 220a, 220b, and 220c shown in FIG. 6, and they can each convert to different colors and correspond to the respective Sub-pixel (for example: sub-pixels of different colors) settings. In an embodiment, the different colors converted by the color filter patterns 220a, 220b, and 220c may be, for example, three primary colors, which may be, for example, red, green, and blue, but the present invention is not limited thereto. In an embodiment, the material of the color filter patterns 220a, 220b, 220c is, for example, an organic material or an inorganic material, and it may be a single layer or at least two-layer structure. When the color filter patterns 220a, 220b, and 220c are at least two layers, the refractive indexes of the layers may be different from each other, which may cause the light to refract different colors, such as red, blue, or green, but not limited thereto. In a preferred embodiment, the materials of the color filter patterns 220a, 220b, and 220c are, for example, inorganic materials, but the present invention is not limited thereto. In other embodiments, the material of the color filter patterns 220a, 220b, 220c may be, for example, an insulating material, a metal material, or a combination thereof. In other embodiments, the color filter patterns 220a, 220b, 220c may include color resist, quantum dots (rods), or a combination thereof. The color filter substrate 220 may further include a black matrix (not shown) and a common electrode (not shown), but the present invention is not limited to this.

The sealant (not shown) is disposed between the active device array substrate 210 and the color filter substrate 220, for example. From another perspective, the frame glue is disposed in the non-display area (not shown) of the display panel 200. The non-display area may be located on at least one side of the display area (not shown). For example, the non-display area may surround the display area, but the present invention is not limited thereto. The sealant may include a plurality of sealant spacers (not shown), for example. For example, the sealant is, for example, conductive particles having a specific size or a spacer having a specific shape, but the present invention is not limited thereto. The sealant may be formed by curing after being irradiated with ultraviolet light, for example, and used to bond the active device array substrate 210 and the color filter substrate 220.

In one embodiment, the display medium layer 230 is filled in the accommodating space formed by the sealant, the active device array substrate 210, and the color filter substrate 220. From another perspective, the display medium layer 230 is disposed in the display area of the display panel 200. The display medium layer 230 may include non-self-luminous materials, such as liquid crystal molecules, electrophoretic display media, or other applicable media as examples. When the display medium layer 230 uses a non-self-luminous material, the display panel 200 may include other backlight light sources (not shown). In other embodiments, the display medium layer 230 may include a self-luminous material, such as an inorganic material, an organic material, or a combination of the foregoing materials. In this embodiment, the display medium layer 230 is liquid crystal molecules. The liquid crystal molecules are preferably liquid crystal molecules that can be rotated or switched by a vertical electric field or liquid crystal molecules that can be rotated or switched by a horizontal electric field, but the present invention is not limited to this.

In an embodiment, an optical glue 300 may be provided in the gap between the solar cell 100a and the display panel 200, but the present invention is not limited thereto. In another embodiment, a gap may be left between the solar cell 100a and the display panel 200. The optical glue 300 can be filled into the above-mentioned gap and has the purpose of electrically insulating adjacent solar battery cells and protecting the solar battery cells. The material of the optical glue 300 is, for example, a transparent material to reduce the visibility of the optical glue 300 to the eyes of the user.

In this embodiment, since the anti-reflection layer with a reflectivity between 5% and 60% is provided on the backlight surface of the solar cell, the user observes the side of the solar cell's backlight surface on the light-receiving surface side of the solar cell When displaying a panel, light reflected by a sub-pixel displaying a color can enter the photoelectric conversion layer in the solar cell through the anti-reflection layer and be absorbed, instead of being reflected by the lower electrode layer in the solar cell Affecting another adjacent sub-pixel that displays another color. Based on this, the images displayed by each of the multiple sub-pixels may not interfere with each other, which may prevent the user from obtaining poor display quality when observing the above object. In addition, while displaying images on the display panel, it can reuse light not emitted from the display, that is, convert light incident on the solar cell into electricity, thus further saving power consumption of the display.

Although the new creation has been disclosed as above with examples, it is not intended to limit the creation of the new creation. Anyone with ordinary knowledge in the technical field of the subject can make some changes and without departing from the spirit and scope of the new creation. Retouch, so the scope of protection of this new creation shall be subject to the scope defined in the appended patent application.

10‧‧‧Monitor
100a, 100b, 100c, 100d ‧‧‧ solar battery
110‧‧‧ carrier board
120‧‧‧Upper electrode layer
130, 132, 134‧‧‧Photoelectric conversion layer
140‧‧‧Lower electrode layer
150‧‧‧Anti-reflection layer
152‧‧‧First floor
154‧‧‧Second floor
160‧‧‧Protective layer
170‧‧‧electrode layer
200‧‧‧Display panel
210‧‧‧Active element array substrate
220‧‧‧Color filter substrate
220a, 220b, 220c‧‧‧ color filter pattern
230‧‧‧ display medium layer
300‧‧‧Optical glue

FIG. 1 is a schematic cross-sectional view of a solar cell according to an embodiment of the new creation.
2 is a schematic cross-sectional view of a solar cell according to another embodiment of the new creation.
3 is a schematic cross-sectional view of a solar cell according to another embodiment of the new creation.
4 is a schematic cross-sectional view of a solar cell according to yet another embodiment of the new creation.
5 is a schematic cross-sectional view of an anti-reflection layer according to an embodiment of the new creation.
6 is a schematic cross-sectional view of a display according to an embodiment of the new creation.

Claims (10)

A solar cell, including:
Upper electrode layer and lower electrode layer;
A photoelectric conversion layer provided between the upper electrode layer and the lower electrode layer; and an anti-reflection layer provided on the surface of the lower electrode layer away from the photoelectric conversion layer, wherein the reflection of the anti-reflection layer The rate is 5% ~ 60%. The solar cell according to item 1 of the patent application range, wherein the material of the anti-reflection layer is at least one selected from the group consisting of molybdenum, molybdenum oxide, silicon nitride, and silicon oxide. The solar cell according to item 1 of the patent application range, wherein the anti-reflection layer includes a first layer and a second layer, the first layer is farther from the surface of the lower electrode layer than the second layer, the The material of the first layer includes silicon nitride or silicon oxide, and the material of the second layer includes molybdenum oxide. The solar cell according to item 1 of the patent application scope further includes a protective layer, the protective layer is disposed between the lower electrode layer and the photoelectric conversion layer, and the material of the protective layer includes molybdenum. The solar cell as described in item 1 of the patent application scope includes multiple layers of the photoelectric conversion layer. The solar cell as described in item 5 of the patent application scope, wherein an electrode layer is provided between adjacent photoelectric conversion layers. The solar cell according to item 1 of the patent application scope, wherein the material of the photoelectric conversion layer includes single crystal silicon, polycrystalline silicon, amorphous silicon, copper indium gallium selenium, or cadmium antimonide. A display including:
A display panel; and the solar cell according to any one of claims 1 to 7, the solar cell is provided on one side of the display surface of the display panel,
Wherein, the upper electrode layer of the solar cell is farther away from the lower electrode layer on the side of the display surface of the display panel. The display according to item 8 of the patent application range, wherein the display panel includes an active element array substrate, a color filter substrate, and a display medium layer, wherein the display medium layer is disposed on the active element array substrate and the Between color filter substrates. The display according to item 9 of the patent application scope, wherein the display medium layer includes an organic material or an inorganic material.