Electronic ink screen and manufacturing method thereof

Abstract

The invention provides an electronic ink screen and a manufacturing method thereof, and relates to the technical field of display. The electronic ink screen is composed of a TFT substrate, an electronic ink layer, a packaging film, a light guide plate and a light source, one surface of the TFT substrate comprises a functional area and a light-transmitting area except the functional area, and the light-transmitting area is of a matte structure; when the front light of the electronic ink screen is turned on, the light source emits light, the light guide plate can enable the light emitted by the light source to be evenly distributed on the screen, but the light emitted by the light source can irradiate the light-transmitting area of the TFT substrate, and the light irradiated on the light-transmitting area cannot be subjected to mirror reflection due to the fact that the light-transmitting area of the TFT substrate is of the matte surface structure. Therefore, compared with a traditional scheme, the reflection effect of the light-transmitting area after the front light is turned on is weakened, the edge of the screen is prevented from being too bright, the display effect of the electronic ink screen can be improved, and a user can obtain good watching experience.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an electronic ink screen and a method for manufacturing the same. Background Art

[0002] Electrophoretic display refers to a technology that uses the directional movement of charged particles in an electric field to achieve image display. As a typical application of electrophoretic display, the ink screen usually includes TFT (Thin Film Transistor) glass, an ink layer attached to the TFT glass, a light guide plate attached to the ink layer, and an LED (Light Emitting Diode) arranged on one side of the light guide plate. When the ink screen turns on the front light function, the light guide plate will evenly distribute the light emitted by the LED on the screen, thereby improving the clarity of the ink screen in a weak light environment. In related technologies, considering factors such as bonding accuracy and bonding wiring space, the ink layer generally does not completely cover the TFT glass. When the ink screen turns on the front light function, the light emitted by the LED will shine on the area of ​​the TFT glass that is not covered by the ink layer, resulting in severe reflections, which ultimately causes the edge of the screen to be too bright, which not only reduces the display effect of the ink screen, but also affects the user's viewing experience. Summary of the invention

[0003] The present application provides an electronic ink screen and a method for manufacturing the same, aiming to solve the problem in the related art that when the front light function of the ink screen is turned on, the display effect is poor and the user viewing experience is poor.

[0004] In order to solve the above-mentioned drawbacks existing in the related technology, the first aspect of the present application provides an electronic ink screen, which includes a TFT substrate, an electronic ink layer, a packaging film, a light guide plate and a light source. One surface of the TFT substrate includes a functional area and a light-transmitting area other than the functional area. The electronic ink layer is attached to the functional area, the packaging film is attached to the electronic ink layer, and the light guide plate is attached to the packaging film. The light source is arranged on the side of the light guide plate and is located at one end of the light guide plate. The light-transmitting area is a matte structure. The matte structure is used to make the light emitted by the light source diffusely reflected when it is irradiated on the light-transmitting area after the front light of the electronic ink screen is turned on.

[0005] In some implementations, the surface of the light guide plate includes an upper surface, a lower surface and four side surfaces, the upper surface is opposite to and spaced from the lower surface, the four side surfaces are connected end to end and connected between the periphery of the upper surface and the periphery of the lower surface, the four side surfaces include two opposite short side surfaces and two opposite long side surfaces, and the lower surface is close to the packaging film. In one of the implementations, the light source is arranged on one short side surface, the other short side surface and the two long side surfaces are all formed with a first black coating, and the edge of the upper surface of the light guide plate is formed with a second black coating connected to the first black coating; or, the light source is arranged on one short side surface, the other short side surface and the two long side surfaces are all affixed with a first light shielding tape, and the edge of the upper surface of the light guide plate is affixed with a second light shielding tape connected to the first light shielding tape.

[0006] In some implementations, the surface of the electronic ink layer away from the TFT substrate includes an effective display area and an invalid display area other than the effective display area. The effective display area corresponds to the functional area on the TFT substrate, and the invalid display area always displays a completely black screen.

[0007] In some implementations, the light source includes an LED light bar, which includes a number of light-emitting diodes; the electronic ink screen also includes a touch sensing layer, which is attached to the light guide plate; the electronic ink screen also includes a cover plate, which is attached to the touch sensing layer.

[0008] The second aspect of the present application provides a method for manufacturing an electronic ink screen, which is used to manufacture the electronic ink screen provided by the first aspect of the present application, including: obtaining a glass plate whose surface includes a functional area and a light-transmitting area other than the functional area; etching the light-transmitting area to form a matte structure in the light-transmitting area; making a TFT circuit in the functional area to obtain a TFT substrate; attaching an electronic ink layer on the TFT substrate corresponding to the functional area; attaching a packaging film on the electronic ink layer; attaching a light guide plate on the packaging film, and a light source is arranged on the side of the light guide plate, and the light source is located at one end of the light guide plate.

[0009] In some implementation schemes, the step of attaching an electronic ink layer to a corresponding functional area on a TFT substrate includes: making an electronic ink layer on a protective substrate, wherein a surface of the electronic ink layer away from the protective substrate includes an effective display area and an invalid display area other than the effective display area; controlling the surface of the electronic ink layer away from the protective substrate to display a full black image, and making the other opposite surface to display a full white image; peeling the electronic ink layer from the protective substrate; attaching the surface of the electronic ink layer displaying the full white image to the TFT substrate, and making the effective display area correspond to the functional area on the TFT substrate.

[0010] In some implementations, after the step of attaching a light guide plate on the packaging film, the method further includes attaching a touch sensing layer on the light guide plate.

[0011] In some implementations, after the step of attaching the touch sensing layer on the light guide plate, the method further includes attaching a cover plate on the touch sensing layer.

[0012] The electronic ink screen provided in the first aspect of the present application is composed of a TFT substrate, an electronic ink layer, a packaging film, a light guide plate and a light source. One surface of the TFT substrate includes a functional area and a light-transmitting area other than the functional area. The electronic ink layer is attached to the functional area, the packaging film is attached to the electronic ink layer, and the light guide plate is attached to the packaging film. The light source is arranged on the side of the light guide plate and is located at one end of the light guide plate. The light-transmitting area is a matte structure. When the front light of the electronic ink screen is turned on, the matte structure will cause the light emitted by the light source to be diffusely reflected when it is irradiated on the light-transmitting area. It is understandable that when the front light of the electronic ink screen is turned on, the light source emits light, and the light guide plate can make the light emitted by the light source evenly distributed on the screen, but the light emitted by the light source will also shine on the light-transmitting area of ​​the TFT substrate. Since the light-transmitting area of ​​the TFT substrate is a matte structure, the light shining on the light-transmitting area will not be mirror-reflected, but diffusely reflected. Compared with the traditional solution, the reflective effect of the light-transmitting area after the front light is turned on is weakened, that is, the reflectivity of the light emitted by the light source when it shines on the light-transmitting area after the front light is turned on is reduced, thereby avoiding the edge of the screen from being too bright, which not only improves the display effect of the electronic ink screen, but also enables users to get a better viewing experience.

[0013] Regarding the manufacturing method of the electronic ink screen provided in the second aspect of the present application, since the manufacturing method is used to manufacture the electronic ink screen provided in the first aspect of the present application, the manufacturing method has all the advantages of the electronic ink screen provided in the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the related technologies or the embodiments of the present application, the drawings required for use in the description of the related technologies or the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, not all embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the structure of the electronic ink screen provided in an embodiment of the present application;

[0016] Figure 2 Schematic diagram of the bonding between the ink layer and the TFT glass at different viewing angles provided in the embodiment of the present application;

[0017] Figure 3 A schematic diagram of the structure of the light guide plate provided in the embodiment of the present application at different viewing angles;

[0018] Figure 4 A schematic flow chart of a method for manufacturing an electronic ink screen provided in an embodiment of the present application.

[0019] The symbols in the above drawings represent:

[0020] 100-TFT substrate, 200-electronic ink layer, 300-packaging film, 400-optical adhesive, 500-light guide plate, 600-light source, 700-touch sensor layer, 800-cover plate, 110-functional area, 120-light-transmitting area, 111-TFT circuit, 121-matte structure, 210-effective display area, 220-invalid display area, 510-first black coating, 520-second black coating, 610-LED light strip. DETAILED DESCRIPTION

[0021] In the related art, the ink screen includes TFT glass, an ink layer attached to the TFT glass, a light guide plate attached to the ink layer, and an LED disposed on one side of the light guide plate. Considering factors such as the lamination accuracy and the bonding wiring space, the ink layer will not completely cover the TFT glass. When the ink screen turns on the front light function, the light emitted by the LED will shine on the area of ​​the TFT glass that is not covered by the ink layer, resulting in severe reflections, which ultimately causes the edge of the screen to be too bright, reducing the display effect of the ink screen and affecting the user's viewing experience. In view of this, the present application proposes an electronic ink screen and a manufacturing method thereof in the embodiments below to solve the above-mentioned drawbacks existing in the related art.

[0022] In order to make the purpose, technical solutions and advantages of the present application more obvious and easy to understand, the present application will be clearly and completely described below in conjunction with the embodiments of the present application and the corresponding drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. It should be understood that the embodiments of the present application described below are only used to explain the present application and are not used to limit the present application, that is, based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0023] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the electronic ink screen. Figure 2Schematic diagram of the bonding of the ink layer and the TFT glass at different viewing angles. This embodiment provides an electronic ink screen, which includes a TFT substrate 100, an electronic ink layer 200, a packaging film 300, a light guide plate 500 and a light source 600. One surface of the TFT substrate 100 includes a functional area 110 and a light-transmitting area 120 other than the functional area 110. The electronic ink layer 200 is attached to the functional area 110, the packaging film 300 is attached to the electronic ink layer 200, the light guide plate 500 is attached to the packaging film 300 through an optical adhesive 400, the light source 600 is arranged on the side of the light guide plate 500 and is located at one end of the light guide plate 500, and the light-transmitting area 120 is a matte structure 121. As the name implies, the functional area 110 refers to the area where the function of the TFT substrate 100 is realized. The functional area 110 is usually provided with a TFT circuit 111 including a large number of thin film transistors, and the light-transmitting area 120 refers to the area on the TFT substrate 100 where only glass (i.e., no structure is provided). In addition, it should be noted that although the electronic ink layer 200 of this embodiment is attached to the functional area 110 of the TFT substrate 100, this does not mean that the electronic ink layer 200 cannot exceed the functional area 110 of the TFT substrate 100. In the actual manufacturing process, the edge of the electronic ink layer 200 may exceed the functional area 110 of the TFT substrate 100 and enter the light-transmitting area 120. The specific situation may depend on actual needs, and this embodiment does not make a sole limitation on this.

[0024] In this embodiment, the matte structure 121 is obtained by etching (such as AG etching) during the manufacturing process of the TFT substrate 100, that is, first obtain a glass plate, and divide the surface of the glass plate into a functional area 110 and a light-transmitting area 120 other than the functional area 110 according to the TFT pattern range, and then perform high-fog AG etching on the light-transmitting area 120 of the glass plate through a shielding process, so that the matte structure 121 is formed in the light-transmitting area 120, and finally the TFT circuit 111 is made in the functional area 110 of the glass plate, and finally the TFT substrate 100 can be obtained. Preferably, the depth of AG etching is less than 0.05 mm, so that it will not affect the strength of the TFT substrate 100, and will not be affected by the subsequent production of the TFT circuit 111 and cause problems such as peeling of coating materials, and the accuracy is easy to control. It is understandable that, during the manufacturing process of the TFT substrate 100, if the matte structure 121 is formed by AG etching after the TFT circuit 111 is manufactured, it is very likely that the TFT circuit 111 will be damaged, ultimately resulting in a defective product, and the manufacturing cost will increase accordingly. In this embodiment, the matte structure 121 is formed by AG etching before the TFT circuit 111 is manufactured, thereby reducing the defective rate of the product.

[0025] In this embodiment, the electronic ink layer 200 is the core part of the electronic ink screen to realize the display function. The electronic ink layer 200 contains a large number of tiny capsules, and the capsules contain transparent liquid. White and black pigment particles with different charges are suspended in the transparent liquid. By applying an electric field at the upper and lower ends of the capsules, the movement direction of the pigment particles can be controlled, so that the screen displays black or white patterns and texts. This display mode imitates the black and white display effect of paper and has good readability and contrast. Specifically, when an electric field is applied to the electrodes of the electronic ink layer 200, the positively charged white pigment particles and the negatively charged black pigment particles will move in opposite directions under the action of the electric field force. If the white pigment particles move to the top of the capsule (that is, the side of the electronic ink layer 200 away from the TFT substrate 100), the corresponding pixel point will display white, and if the black pigment particles move to the top, the corresponding pixel point will display black. By accurately controlling the electric field in the capsule corresponding to each pixel, various complex images and text information can be displayed on the screen.

[0026] In this embodiment, the TFT substrate 100 is mainly used to control the electric field of each pixel in the electronic ink layer 200, so as to achieve precise control of the displayed content. A TFT circuit 111 is arranged in the functional area 110 of the TFT substrate 100. The TFT circuit 111 includes a large number of thin film transistors. These thin film transistors, as electronic switches, can independently control the charging and discharging process of each pixel, thereby adjusting the position of the pigment particles in the electronic ink layer 200, and finally realize the display of the image. In addition, some driving circuits and signal transmission lines may be integrated in the TFT circuit 111 to communicate with the main board of the device and receive and process display data. Specifically, during the display process, the main board of the device sends the image signal to the driving circuit in the TFT circuit 111. The driving circuit controls the opening and closing of each thin film transistor according to the signal content. When the thin film transistor is turned on, it will apply an electric field to the corresponding pixel, so that the pigment particles in the electronic ink layer 200 move in a predetermined manner, thereby displaying the corresponding pixel color. Then, by quickly controlling the switching state of a large number of thin film transistors, the complete image and text information can be refreshed on the screen.

[0027] In this embodiment, the packaging film 300 is used to encapsulate and protect the electronic ink layer 200, prevent ink leakage and contamination of the ink by external substances, and also isolate oxygen and moisture, so as to prevent the material in the electronic ink layer 200 from changing performance or being damaged due to the influence of oxygen and moisture. In addition, the packaging film 300 can also provide mechanical support to a certain extent to maintain the shape and structural stability of the electronic ink layer 200. It should be noted that the packaging film 300 needs to have good sealing, chemical stability and flexibility. It usually adopts polymer materials, such as polyethylene terephthalate (PET), etc. These materials can not only effectively prevent the penetration of oxygen and moisture, but also adapt to the expansion and contraction of the electronic ink screen in different temperature and humidity environments, thereby avoiding the rupture of the packaging film 300.

[0028] In this embodiment, the light guide plate 500 is mainly used to evenly guide the light to the display area of ​​the electronic ink screen after the front light of the electronic ink screen is turned on. The light emitted by the light source 600 in the front light system is scattered and reflected by the special structure of the light guide plate 500, so that the light can be evenly distributed on the entire screen, avoiding the situation where the local brightness is too high or too low, thereby providing a comfortable and uniform lighting effect and improving the clarity of the electronic ink screen in a low-light environment. It should be noted that the design of the light guide plate 500 is usually based on the principle of optical refraction and reflection, and it contains microstructures such as dots or prisms, which can change the propagation direction of the light. After the light enters the light guide plate 500 from the light source 600, it will be continuously reflected and refracted inside the light guide plate 500, and finally emitted from the light exit surface of the light guide plate 500 in a uniform manner, and illuminate the display area of ​​the electronic ink screen.

[0029] In this embodiment, the main function of the optical glue 400 between the light guide plate 500 and the packaging film 300 is to closely fit the light guide plate 500 and the packaging film 300 together and ensure good optical performance between the two; in addition, the optical glue 400 can effectively fill the small gap between the light guide plate 500 and the packaging film 300, reduce the refraction and reflection of light by the air layer, and thus improve the light transmittance and display clarity of the screen. It should be noted that the optical glue 400 needs to have the characteristics of high transparency, low refractive index, good adhesion and weather resistance, so that it can maintain stable performance under different temperature and humidity environments, ensuring that the light guide plate 500 and the packaging film 300 are firmly bonded and the optical performance is not affected.

[0030] In this embodiment, when the front light of the electronic ink screen is turned on, the matte structure 121 causes the light emitted by the light source 600 to be diffusely reflected when it irradiates the light-transmitting area 120. Preferably, the light source 600 is an LED light bar 610, and the LED light bar 610 is composed of a plurality of light-emitting diodes.

[0031] It is understandable that when the front light of the electronic ink screen is turned on, the light source 600 emits light, and the light guide plate 500 can make the light emitted by the light source 600 evenly distributed on the screen, but the light emitted by the light source 600 will also irradiate the light-transmitting area 120 of the TFT substrate 100. Since the light-transmitting area 120 of the TFT substrate 100 is a matte structure 121, the light irradiated on the light-transmitting area 120 will not be mirror-reflected, but diffusely reflected, thereby weakening the reflective effect of the light-transmitting area 120 after the front light is turned on compared with the traditional solution, that is, reducing the reflectivity of the light emitted by the light source 600 when it is irradiated on the light-transmitting area 120 after the front light is turned on, thereby avoiding the edge of the screen from being too bright, which not only improves the display effect of the electronic ink screen, but also enables users to obtain a better viewing experience.

[0032] In some embodiments, please combine Figure 3 , Figure 3 The schematic diagram of the structure of the light guide plate at different viewing angles is shown. The cross-sectional shape of the light guide plate 500 is a rectangle. In this case, the surface of the light guide plate 500 includes an upper surface, a lower surface and four side surfaces. The upper surface is opposite to the lower surface and is spaced apart. The four side surfaces are connected end to end and connected between the periphery of the upper surface and the periphery of the lower surface. The four side surfaces include two opposite short side surfaces and two opposite long side surfaces. The lower surface is close to the packaging film 300. Specifically, the light source 600 is arranged on one short side surface, and the other short side surface and the two long side surfaces are formed with a first black coating 510. The edge of the upper surface of the light guide plate 500 is formed with a second black coating 520 connected to the first black coating 510. It can be understood that by providing the first black coating 510 and the second black coating 520, the light absorption effect can be enhanced and the emission of edge light can be reduced, thereby reducing the amount of light reflected by the light-transmitting area 120 of the TFT substrate 100 after the front light is turned on, so that the reflective effect of the light-transmitting area 120 after the front light is turned on can be further weakened, and the display effect of the electronic ink screen can be further improved.

[0033] Of course, the structure for absorbing light on the light guide plate 500 is not limited to the black coating (i.e., the first black coating 510 and the second black coating 520). In other embodiments, the black coating can be replaced by other structures with light absorbing function in the art, such as replacing the black coating with a light shielding tape, that is, the light source 600 is arranged on a short side, the other short side and the two long sides are affixed with a first light shielding tape, and the edge of the upper surface of the light guide plate 500 is affixed with a second light shielding tape connected to the first light shielding tape. It should be noted that whether the structure for absorbing light on the light guide plate 500 is a black coating or a light shielding tape can be selected according to actual needs, and this application does not make a sole limitation on this.

[0034] In some embodiments, the surface of the electronic ink layer 200 away from the TFT substrate 100 includes an effective display area 210 and an invalid display area 220 other than the effective display area 210. The effective display area 210 corresponds to the functional area 110 on the TFT substrate 100, so that the pigment particles in each capsule in the effective display area 210 can be controlled by the TFT circuit 111 in the functional area 110, but the pigment particles in each capsule in the invalid display area 220 cannot be controlled by the TFT circuit 111 in the functional area 110, that is, when the electronic ink screen is used, the picture in the effective display area 210 is changeable, while the picture in the invalid display area 220 is fixed. Preferably, the invalid display area 220 always displays a completely black picture, so as to better absorb light and improve the display effect of the electronic ink screen.

[0035] Specifically, in the actual bonding process of the electronic ink layer 200 and the TFT substrate 100, the electronic ink layer 200 can be firstly made on the protective substrate, and the protective substrate plays a role of temporary support and protection for the electronic ink layer 200. At this time, the surface of the electronic ink layer 200 away from the protective substrate includes the effective display area 210 and the invalid display area 220 other than the effective display area 210; then, by controlling the pigment particles in each capsule in the electronic ink layer 200, the surface of the electronic ink layer 200 away from the protective substrate displays a full black picture (that is, both the effective display area 210 and the invalid display area 220 display a full black picture), and the other opposite surface (that is, the surface of the electronic ink layer 200 close to the protective substrate) displays a full white picture; finally, the electronic ink layer 200 is peeled off from the protective substrate, so that the surface of the electronic ink layer 200 displaying the full white picture is bonded to the TFT substrate 100, and the effective display area 210 corresponds to the functional area 110 on the TFT substrate 100. It can be understood that although both the effective display area 210 and the invalid display area 220 display a completely black screen before and after the electronic ink layer 200 is bonded to the TFT substrate 100, when the electronic ink screen is manufactured and put into use, the pigment particles in each capsule in the effective display area 210 can be controlled by the TFT circuit 111 in the functional area 110, that is, the picture in the effective display area 210 is changeable, and the invalid display area 220 does not correspond to the functional area 110 on the TFT substrate 100, so it will always display a completely black picture, thereby enhancing the light absorption effect.

[0036] In some embodiments, see Figure 1In addition to the structure given above, the electronic ink screen also includes a touch sensing layer 700, which is attached to the light guide plate 500 through an optical adhesive 400. It can be understood that the touch sensing layer 700 is mainly used to realize the user's touch operation function on the electronic ink screen. When the user touches the screen, the touch sensing layer 700 can sense information such as the touch position, touch strength and touch gesture, and transmit this information to the control system of the device, thereby realizing operation functions such as page turning, selection, writing, etc., thereby enhancing the interactivity of the device. In addition, it should be noted that common touch technologies include capacitive touch and resistive touch. Capacitive touch is the method currently adopted by most electronic devices. It uses the human body electric field and the capacitive sensing electrodes inside the screen to detect touch operations. When a finger touches the screen, the capacitance value at the touch point will change. If the touch sensing layer 700 adopts capacitive touch, then the touch sensing layer 700 can determine the touch position by detecting these capacitance changes. It should also be noted that, since the technology of the touch sensing layer 700 is relatively mature in the art, this application does not provide too much description on the touch sensing layer 700 .

[0037] In some embodiments, see Figure 1 In addition to the structure given above, the electronic ink screen also includes a cover plate 800 attached to the touch sensing layer 700 by optical glue 400. It can be understood that the cover plate 800 is the outermost protective structure of the electronic ink screen, similar to the glass cover plate of the mobile phone screen. Its main function is to protect the electronic components and display materials inside the electronic ink screen from external physical damage (such as scratches, collisions, dust and water, etc.). At the same time, the cover plate 800 also needs to have good light transmittance to ensure that the user can clearly see the content displayed on the screen. In addition, it should be noted that the cover plate 800 generally uses a glass material with higher hardness, such as Corning Gorilla Glass, etc., in order to provide sufficient wear resistance and scratch resistance; the surface of the cover plate 800 is usually specially treated to reduce the adhesion and reflection of fingerprints, thereby improving the user's visual experience.

[0038] See also Figure 4 , Figure 4It is a flow chart of a method for manufacturing an electronic ink screen. This embodiment provides a method for manufacturing an electronic ink screen, which is used to manufacture the electronic ink screen described above, including steps 401 to 406 (abbreviated as S401 to S406), namely: S401, obtaining a glass plate whose surface includes a functional area and a light-transmitting area other than the functional area; S402, etching the light-transmitting area to form a matte structure in the light-transmitting area; S403, making a TFT circuit in the functional area to obtain a TFT substrate; S404, pasting an electronic ink layer on the TFT substrate corresponding to the functional area; S405, pasting a packaging film on the electronic ink layer; S406, pasting a light guide plate on the packaging film, and a light source is provided on the side of the light guide plate, and the light source is located at one end of the light guide plate. In addition, it should be noted that for the unfinished description of the manufacturing method, please refer to the relevant description of the electronic ink screen in the previous text, and this embodiment will not be described in detail.

[0039] The above embodiments are only preferred implementations of the present application, and are not the only limitations on the electronic ink screen and its manufacturing method. In this regard, those skilled in the art can flexibly set them according to the actual application scenarios based on the above embodiments. It can be understood that, through the implementation of the above embodiments of the present application, the electronic ink screen is jointly constituted by the TFT substrate 100, the electronic ink layer 200, the packaging film 300, the light guide plate 500 and the light source 600. One surface of the TFT substrate 100 includes a functional area 110 and a light-transmitting area 120 other than the functional area 110. The electronic ink layer 200 is attached to the functional area 110, the packaging film 300 is attached to the electronic ink layer 200, the light guide plate 500 is attached to the packaging film 300 through the optical adhesive 400, the light source 600 is arranged on the side of the light guide plate 500 and is located at one end of the light guide plate 500, the light-transmitting area 120 is a matte structure 121, and when the front light of the electronic ink screen is turned on, the matte structure 121 causes the light emitted by the light source 600 to be diffusely reflected when it is irradiated on the light-transmitting area 120. In actual applications, when the front light of the electronic ink screen is turned on, the light source 600 emits light, and the light guide plate 500 can make the light emitted by the light source 600 evenly distributed on the screen, but the light emitted by the light source 600 will also irradiate the light-transmitting area 120 of the TFT substrate 100. Since the light-transmitting area 120 of the TFT substrate 100 is a matte structure 121, the light irradiated on the light-transmitting area 120 will not be mirror-reflected, but diffusely reflected, thereby weakening the reflective effect of the light-transmitting area 120 after the front light is turned on compared with the traditional solution, that is, reducing the reflectivity of the light emitted by the light source 600 when it is irradiated on the light-transmitting area 120 after the front light is turned on, thereby avoiding the edge of the screen from being too bright, which not only improves the display effect of the electronic ink screen, but also enables users to obtain a better viewing experience.

[0040] It should be noted that the several embodiments shown in the present application above are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can refer to each other. It should also be noted that in the text description of the present application, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is such an actual relationship or order between these entities or operations. Further, the terms "include", "comprise" or any other corresponding variants are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only these elements, but also other elements that are not explicitly listed, or may also include elements inherent to such a process, method, article or device; and, in the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] In addition, by implementing the several embodiments shown above in the present application, professionals and technicians in this field can implement or use the present application. For the several embodiments shown above in the present application, various modifications will be obvious to professionals and technicians in this field, and the general principles defined in the present application can be implemented in other embodiments not shown without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the several embodiments shown above, but will conform to the widest range consistent with the principles and novel features disclosed in the present application.

Claims

1. An electronic ink screen, characterized in that: It includes a light source, a light guide plate, a packaging film, an electronic ink layer and a TFT substrate, one surface of the TFT substrate includes a functional area and a light-transmitting area other than the functional area, the electronic ink layer is attached to the functional area, the packaging film is attached to the electronic ink layer, the light guide plate is attached to the packaging film, the light source is arranged on the side of the light guide plate and is located at one end of the light guide plate, the light-transmitting area is a matte structure, and the matte structure is used to make the light emitted by the light source diffusely reflected when it irradiates the light-transmitting area after the front light of the electronic ink screen is turned on.

2. The electronic ink screen according to claim 1, characterized in that: The surface of the light guide plate includes an upper surface, a lower surface and four side surfaces, the upper surface is opposite to and spaced from the lower surface, the four side surfaces are connected end to end and connected between the periphery of the upper surface and the periphery of the lower surface, the four side surfaces include two opposite short side surfaces and two opposite long side surfaces, the lower surface is close to the packaging film, the light source is arranged on one of the short side surfaces, and a first black coating is formed on the other short side surface and the two long side surfaces.

3. The electronic ink screen according to claim 2, characterized in that: A second black coating layer connected to the first black coating layer is formed at an edge of the upper surface.

4. The electronic ink screen according to claim 1, characterized in that: The surface of the light guide plate includes an upper surface, a lower surface and four side surfaces, the upper surface is opposite to and spaced from the lower surface, the four side surfaces are connected end to end and connected between the periphery of the upper surface and the periphery of the lower surface, the four side surfaces include two opposite short side surfaces and two opposite long side surfaces, the lower surface is close to the packaging film, the light source is arranged on one of the short side surfaces, and the other short side surface and the two long side surfaces are affixed with a first light-shielding tape.

5. The electronic ink screen according to claim 4, characterized in that: A second light-shielding tape connected to the first light-shielding tape is attached to the edge of the upper surface.

6. The electronic ink screen according to claim 1, characterized in that: The surface of the electronic ink layer away from the TFT substrate includes an effective display area and an invalid display area except the effective display area. The effective display area corresponds to the functional area on the TFT substrate, and the invalid display area always displays a completely black screen.

7. The electronic ink screen according to claim 1, characterized in that: It also includes a touch sensing layer, which is arranged on the light guide plate through optical adhesive.

8. The electronic ink screen according to claim 7, characterized in that: It also includes a cover plate, which is mounted on the touch sensing layer through optical adhesive.

9. The electronic ink screen according to claim 1, characterized in that: The light source comprises an LED light bar, and the LED light bar comprises a plurality of light emitting diodes.

10. A method for manufacturing an electronic ink screen, characterized in that: For manufacturing the electronic ink screen according to any one of claims 1 to 9, comprising: Obtain a glass plate having a surface including a functional area and a light-transmitting area other than the functional area; Etching the light-transmitting area to form a matte structure in the light-transmitting area; Fabricate a TFT circuit in the functional area to obtain a TFT substrate; Affixing an electronic ink layer on the TFT substrate corresponding to the functional area; A packaging film is attached to the electronic ink layer; A light guide plate is attached to the packaging film, a light source is arranged on the side of the light guide plate, and the light source is located at one end of the light guide plate.

11. The manufacturing method according to claim 10, characterized in that: The step of attaching an electronic ink layer on the TFT substrate corresponding to the functional area comprises: An electronic ink layer is formed on a protective substrate, wherein a surface of the electronic ink layer away from the protective substrate includes an effective display area and an ineffective display area other than the effective display area; Controlling the surface of the electronic ink layer away from the protective substrate to display a full black image, and controlling the other surface opposite to the protective substrate to display a full white image; peeling the electronic ink layer from the protective substrate; The surface of the electronic ink layer displaying a full white screen is attached to the TFT substrate, and the effective display area is made to correspond to the functional area on the TFT substrate.

12. The manufacturing method according to claim 10, characterized in that: After the step of attaching the light guide plate on the packaging film, the method further includes: A touch sensing layer is attached to the light guide plate.

13. The manufacturing method according to claim 12, characterized in that: After the step of attaching the touch sensing layer on the light guide plate, the method further includes: A cover plate is attached to the touch sensing layer.

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