Quantum dot electronic paper display device and preparation method thereof

Abstract

The invention discloses a quantum dot electronic paper display device, which comprises an array substrate, an electronic ink layer, a transparent electrode layer and a majority quantum dot ink layer, and is characterized in that the top surface of the array substrate is provided with the electronic ink layer and generates a reflection ray; the transparent electrode layer is arranged on the top surface of the electronic ink layer, a plurality of cup body structures are formed at the top of the transparent electrode layer, a plurality of quantum dot ink layers are respectively arranged in the plurality of cup body structures, and the plurality of quantum dot ink layers generate high-saturation colored light rays according to the reflected light rays. The majority quantum dot ink layer is arranged in the majority cup body structures of the transparent electrode layer, the electronic ink layer reflects the ambient light to the majority quantum dot ink layer so as to excite the majority quantum dot ink layer to emit light, the reflected light is converted into color light with high saturation degree, and the color light with high saturation degree is obtained. The purpose of improving the color performance of the electronic paper display device is achieved.

Description

Technical Field

[0001] The present invention relates to an electronic paper display device, and particularly to a quantum dot electronic paper display device and a preparation method thereof. Background Art

[0002] Quantum dots are a kind of nano-level optoelectronic material. When quantum dots are excited by a light source with a specific wavelength, quantum dots of different materials / sizes will emit light with different wavelengths. By precisely controlling the material composition and size of the quantum dots, the emission color of the quantum dots can be finely adjusted, so that the quantum dots can exhibit the emission characteristics of high color saturation and wide color gamut coverage.

[0003] In the prior art, in order to achieve color applications on an electronic paper display device, it is usually to attach a plurality of color filter layers on a black-and-white electronic paper display device to make the electronic paper display device achieve a colorized effect. However, with the development of display technology, the color performance of existing color electronic paper display devices can no longer meet the needs of consumers.

[0004] Therefore, how to use quantum dots to improve the color performance of the existing electronic paper display device does indeed require the necessity of further proposing technical solutions. Summary of the Invention

[0005] In view of the above deficiencies of the prior art, the main object of the present invention is to provide a quantum dot electronic paper display device and a preparation method thereof, which improve the color performance of the electronic paper display device by arranging a plurality of quantum dot ink layers in the electronic paper display device.

[0006] To solve the above problems of the prior art, the main technical solution adopted by the present invention is to make the aforementioned quantum dot electronic paper display device include: An array substrate; An electronic ink layer, which is arranged on the top surface of the array substrate and generates a reflected light; A transparent electrode layer, which is arranged on the top surface of the electronic ink layer, and a plurality of cup structures are formed on the top of the transparent electrode layer; A plurality of quantum dot ink layers, which are respectively arranged in the cup structures of the transparent electrode layer, and the plurality of quantum dot ink layers generate a high-saturation color light according to the reflected light.

[0007] Preferably, the electronic ink layer includes: A solution; A plurality of microcapsules, which are suspended in the solution, and a plurality of charged particles are respectively arranged in the plurality of microcapsules.

[0008] Preferably, the plurality of quantum dot ink layers include: A red quantum dot ink layer; A green quantum dot ink layer; A blue quantum dot ink layer.

[0009] Preferably, it further includes: A waterproof layer, which is provided on the cup structure of the transparent electrode layer and the top surface of the plurality of quantum dot ink layers.

[0010] With the above structure, the present invention arranges the plurality of quantum dot ink layers in the majority of cup structures of the transparent electrode layer. By means of the electronic ink layer, the light is reflected to the plurality of quantum dot ink layers to excite the plurality of quantum dot ink layers to emit light, and the reflected light is converted into high-saturation colored light, so as to achieve the purpose of improving the color performance of the electronic paper display device.

[0011] To solve the problems of the above-mentioned prior art, another main technical solution adopted by the present invention is that the preparation method of the aforementioned quantum dot electronic paper display device includes the following steps: Attach an electronic ink layer to the top surface of an array substrate; Attach a transparent electrode layer to the top surface of the electronic ink layer; Form a majority of cup structures on the top of the transparent electrode layer; Spray quantum dot ink into the majority of cup structures to form a plurality of quantum dot ink layers.

[0012] Preferably, after the above steps are executed to "spray quantum dot ink into the majority of cup structures to form the plurality of quantum dot ink layers", the preparation method further includes the following steps: Spray a waterproof material onto the top surfaces of the majority of cup structures and the plurality of quantum dot ink layers to form a waterproof layer.

[0013] Through the above steps, the present invention stacks the electronic ink layer and the transparent electrode layer on the array substrate. By forming a majority of cup structures on the transparent electrode layer and spraying quantum dot ink into the majority of cup structures to form a plurality of quantum dot ink layers; through the preparation method of the present invention, the purpose of improving the color performance of the quantum dot electronic paper display device is achieved. Description of the Drawings

[0014] Figure 1 It is a cross-sectional view of an embodiment of the quantum dot electronic paper display device of the present invention; Figure 2 It is another cross-sectional view of an embodiment of the quantum dot electronic paper display device of the present invention; Figure 3 It is still another cross-sectional view of an embodiment of the quantum dot electronic paper display device of the present invention; Figure 4 A preparation flow chart of an embodiment of the quantum dot electronic paper display device of the present invention; Figure 5 Another preparation flow chart of an embodiment of the quantum dot electronic paper display device of the present invention. Detailed implementation manners

[0015] Regarding the embodiment of the quantum dot electronic paper display device of the present invention, please refer to Figure 1 As shown, it includes an array substrate 10, an electronic ink layer 20, a transparent electrode layer 30 and a plurality of quantum dot ink layers 40. The electronic ink layer 20 is disposed on the top surface of the array substrate 10, and a reflected light is generated by the electronic ink layer 20; the bottom of the transparent electrode layer 30 is disposed on the top surface of the electronic ink layer 20, and a plurality of cup structures 31 are formed on the top of the transparent electrode layer 30. The plurality of quantum dot ink layers 40 are respectively disposed in the cup structures 31 of the transparent electrode layer 30, and a high-saturation color light is generated by the plurality of quantum dot ink layers 40 according to the reflected light of the electronic ink layer 20. In this embodiment, the material used for the transparent electrode layer 30 may be indium tin oxide (ITO).

[0016] Through the above structure, the plurality of quantum dot ink layers 40 are disposed in the plurality of cup structures 31 of the transparent electrode layer 30, and the light is reflected by the electronic ink layer 20 to the plurality of quantum dot ink layers 40 to excite the plurality of quantum dot ink layers 40 to emit light, and the reflected light is converted into a high-saturation color light, improving the color performance of the electronic paper display device.

[0017] Please refer to Figure 2 As shown, in this embodiment, the electronic ink layer 20 may be a microcup electrophoretic display layer. The electronic ink layer 20 may include a transparent flexible rubber material 21 and a plurality of microcapsules 22. The plurality of microcapsules 22 are fixedly disposed in the transparent flexible rubber material 21, and a plurality of charged particles 221 and a solution 222 are respectively disposed in the plurality of microcapsules 22. The plurality of charged particles 221 are suspended in the solution 222. When the light output by the ambient light or the front light module (not shown in the figure) irradiates the electronic ink layer 20, the movement of the charged particles 221 in the plurality of microcapsules 22 can be controlled by the electric field between the array substrate 10 and the transparent electrode layer 30, and the light output by the ambient light or the front light module is reflected to generate the reflected light.

[0018] As Figure 2As shown, in this embodiment, the multi-quantum dot ink layer 40 may include a red quantum dot ink layer 41, a green quantum dot ink layer 42, and a blue quantum dot ink layer 43. When the reflected light generated by the electronic ink layer 20 is incident on the red quantum dot ink layer 41, the green quantum dot ink layer 42, and the blue quantum dot ink layer 43, the reflected light will excite the red quantum dot ink layer 41, the green quantum dot ink layer 42, and the blue quantum dot ink layer 43, so that the red quantum dot ink layer 41, the green quantum dot ink layer 42, and the blue quantum dot ink layer 43 emit red light, green light, and blue light respectively, thereby constituting the high-saturation color light.

[0019] Please refer to Figure 3 As shown, in this embodiment, to further prevent water vapor from infiltrating, the present invention may further include a waterproof layer 50, and the waterproof layer 50 is disposed on the cup structure 31 of the transparent electrode layer 30 and the top surface of the multi-quantum dot ink layer 40. In this embodiment, the water vapor transmission rate of the waterproof layer 50 is less than 10 -2 g / (m 2 ·day).

[0020] Through the specific application mode of the above embodiments of the present invention, the present invention can further provide a method for manufacturing a quantum dot electronic paper display device, and the quantum dot electronic paper display device includes the array substrate 10, the electronic ink layer 20, the transparent electrode layer 30, and the multi-quantum dot ink layer 40. As Figure 4 shown, the manufacturing method includes the following steps: Attach the electronic ink layer 20 to the top surface of the array substrate 10 (S1); Attach the transparent electrode layer 30 to the top surface of the electronic ink layer 20 (S2); Form the majority of cup structures 31 on the top of the transparent electrode layer 30 by roll imprinting (S3); Spray quantum dot ink into the majority of cup structures 31 to form the multi-quantum dot ink layer 40 (S4).

[0021] Through the above steps, the electronic ink layer 20 and the transparent electrode layer 30 are stacked on the array substrate 10. By forming the majority of cup structures 31 on the transparent electrode layer 30 and spraying quantum dot ink into the majority of cup structures 31 to form the multi-quantum dot ink layer 40, the color performance of the quantum dot electronic paper display device can be improved.

[0022] Further, in this embodiment, after the above steps are executed to "spray quantum dot ink into the majority of cup structures 31 to form the multi-quantum dot ink layer 40 (S4)", the preparation method further includes the following steps: Spray a waterproof material onto the top surfaces of the majority of cup structures 31 and the multi-quantum dot ink layer 40 to form the waterproof layer 50 (S5).

[0023] Through the above steps, moisture can be prevented from penetrating into the multi-quantum dot ink layer 40 to avoid damage to the multi-quantum dot ink layer 40 caused by moisture.

Claims

1. A quantum dot electronic paper display device, characterized in that, Comprising: An array substrate; An electronic ink layer disposed on the top surface of the array substrate and generating a reflected light; A transparent electrode layer disposed on the top surface of the electronic ink layer, and a plurality of cup structures are formed on the top of the transparent electrode layer; A plurality of quantum dot ink layers respectively disposed in the cup structures of the transparent electrode layer, and the plurality of quantum dot ink layers generate a high-saturation colored light according to the reflected light.

2. The quantum dot electronic paper display device according to claim 1, characterized in that The electronic ink layer includes: A transparent soft glue material; A plurality of microcapsules disposed in the transparent soft glue material, and a plurality of charged particles and a solution are respectively disposed in the plurality of microcapsules, and the plurality of charged particles are disposed in the solution.

3. The quantum dot electronic paper display device according to claim 1, wherein The plurality of quantum dot ink layers include: A red quantum dot ink layer; A green quantum dot ink layer; A blue quantum dot ink layer.

4. The quantum dot electronic paper display device according to claim 1, characterized in that, Further comprising: A waterproof layer disposed on the top surfaces of the cup structures of the transparent electrode layer and the plurality of quantum dot ink layers.

5. A preparation method of a quantum dot electronic paper display device, characterized in that, The preparation method includes the following steps: Attaching an electronic ink layer to the top surface of an array substrate; Attaching a transparent electrode layer to the top surface of the electronic ink layer; Forming a plurality of cup structures on the top of the transparent electrode layer; Spraying quantum dot ink into the plurality of cup structures to form a plurality of quantum dot ink layers.

6. The preparation method of the quantum dot electronic paper display device according to claim 5, wherein, After the above steps are executed to "spraying quantum dot ink into the plurality of cup structures to form the plurality of quantum dot ink layers", the preparation method further includes the following steps: Spraying a waterproof material onto the top surfaces of the plurality of cup structures and the plurality of quantum dot ink layers to form a waterproof layer.

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