CN217846840U

CN217846840U - Electronic paper device

Info

Publication number: CN217846840U
Application number: CN202221820494.4U
Authority: CN
Inventors: 白志强; 林孟癸; 黄军豪; 蔡锦安; 崔芷榕
Original assignee: Young Fast Optoelectronics Co Ltd
Current assignee: Young Fast Optoelectronics Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-11-18
Anticipated expiration: 2032-07-15

Abstract

An electronic paper device comprises a surface cover plate module and an electronic paper display module, wherein the surface cover plate module is arranged above the electronic paper display module; the surface cover plate module is provided with a top layer, a touch sensor and a bottom layer, wherein the touch sensor is arranged between the top layer and the bottom layer; wherein the surface cover module further comprises at least one middle layer disposed between the top layer and the bottom layer; the surface cover plate module is composed of a plurality of laminated layers, the size and the thickness of the laminated layers can be adjusted according to requirements, the touch sensor is clamped between the laminated layers of the surface cover plate module, the setting position of the touch sensor is close to the touch operation surface as much as possible to ensure the touch operation sensitivity, and the touch sensor is far away from the electronic paper display module as much as possible to avoid the interference phenomenon.

Description

Electronic paper device

Technical Field

The utility model relates to a technical category of electronic paper device structure especially indicates the improvement structure of the surface cover plate module of electronic paper device.

Background

The electronic paper has the characteristics of flexibility, wide visual angle, light weight, high resolution, high contrast, indoor and outdoor readability and the like, and has the advantages of low power consumption and the like, so the electronic paper is widely applied to various consumer electronic products at present; taking an electronic paper handwriting board as an example, the electronic paper handwriting board can be used as a drawing or writing medium, not only can replace the use of general paper, but also can be applied to daily matters such as game playing, writing exercise, language learning, mathematical calculation and the like, so the electronic paper handwriting board has wide application and excellent prospect; the structure of the traditional electronic paper handwriting board is that a Touch sensor (Touch panel) and a Cover sheet (Cover Lens) are sequentially stacked on an electronic paper display module, and the Touch sensor is used as an input device, so that a user can perform interactive operation with an image picture of an electronic paper display through the Touch sensor, and the convenience of the electronic paper display is further expanded.

As known, since electronic paper and touch sensor are fragile electronic components, which are easily damaged by external force, such as the force applied by the electronic paper tablet during writing, the cover plate on the surface of the electronic paper device must have a certain thickness to withstand the external force, so as not to damage the electronic paper or touch sensor, thereby ensuring the service life of the product. However, since the area of the electronic paper device is larger and larger, the thickness of the cover plate must be increased to ensure sufficient structural strength. However, many new problems are gradually derived along with the increase of the area and thickness of the surface cover, for example, the surface cover is thickened, so that the distance between the touch sensor and the touch operation surface (i.e. the upper surface of the surface cover) is increased, the sensitivity of the touch sensing is reduced, and the problem of poor touch input is caused

Moreover, most touch sensors of the conventional electronic paper device structure are directly arranged above the electronic paper, and because the two touch sensors are arranged at a very close distance, interference is easily generated during use, and especially when the electronic paper is used for changing display operation, such as page turning or picture clearing, the electronic paper generates an interference signal to cause a point false alarm phenomenon of the touch sensor, thereby causing use troubles.

SUMMERY OF THE UTILITY MODEL

In view of the above, the main objective of the present invention is to provide an improved structure of an electronic paper device, wherein a surface cover module is disposed above an electronic paper display module, the surface cover module is composed of a plurality of stacked components, and a touch sensor is sandwiched between the stacked components of the surface cover module, so that the installation position of the touch sensor is as close as possible to the touch operation surface to ensure the touch operation sensitivity, and as far as possible away from the electronic paper display module to avoid the two from generating the mutual interference phenomenon.

To achieve the above object, the present invention provides an electronic paper device, which comprises a surface cover module having a top layer, a touch sensor and a bottom layer, wherein the touch sensor is disposed between the top layer and the bottom layer; and an electronic paper display module; the surface cover plate module is arranged above the electronic paper display module.

In one embodiment, the top layer of the surface cover module is a thin layer with high light transmittance, the upper surface of the top layer is a hardened surface or an optical functional surface, and a decorative frame made of opaque or low light transmittance material is arranged at the peripheral edge region of the bottom surface of the top layer.

In one embodiment, the surface cover module further comprises at least one intermediate layer disposed between the top layer and the bottom layer.

Wherein, the materials of the top layer, the bottom layer and the middle layer are selected from glass, polymethyl methacrylate, polycarbonate, polyester, cyclic olefin copolymer and cyclic olefin polymer.

Wherein the touch sensor is selected from a capacitive touch sensor, a resistive touch sensor, an electromagnetic touch sensor, an acoustic wave touch sensor, a vibration wave touch sensor, an optical touch sensor, or a combination thereof.

In one embodiment, the electronic paper display device further comprises an illumination module arranged between the surface cover plate module and the electronic paper display module, wherein the illumination module can provide auxiliary illumination for the electronic paper display, and is convenient to use in a state without an external light source; the peripheral edge area of the bottom surface of the bottom layer of the surface cover plate module is provided with a shading frame formed by opaque or low-transmittance materials, and the shading frame can shade an illumination light source of the illumination module from penetrating the surface cover plate module to form a frame-shaped halo phenomenon.

The utility model discloses an electronic paper device can make the component size thickness of surface cover board module have the arbitrariness, according to required adjustment plate body intensity with reduction in production cost, and through pressing from both sides a touch-sensitive ware and establish between the stromatolite component of this surface cover board module, makes the position that sets up of touch-sensitive ware, is close the touch operation face as far as possible in order to ensure touch operation sensitivity to keep away from this electronic paper display module as far as possible in order to avoid the two to produce the phenomenon of interfering mutually.

Drawings

Fig. 1 is a schematic plan view of a first embodiment of the present invention.

FIG. 2 is a schematic side sectional view of the stacked assembly of FIG. 1 taken along section line II-II.

Fig. 3 is a schematic side sectional view of a laminated composite structure according to a second embodiment of the present invention.

Fig. 4 is a schematic side sectional view of a laminated composite structure according to a third embodiment of the present invention.

Fig. 5 is a schematic perspective view illustrating a structure of a lighting module according to a third embodiment of the present invention.

In the figure:

1, a surface cover plate module; 11a top layer; 110 upper surface; 112 decorating the frame; 12 a touch sensor; 13 a bottom layer; 132 a light shielding frame; 15 an intermediate layer 15;2, an electronic paper display module; 3, lighting module; 31 light bars; 311a diffusion strip; 311a spot divergence; 312 a reflective plate; 313 point light sources; 35 a light guide plate.

Detailed Description

Preferred embodiments of the present invention are described in the accompanying drawings, wherein, in order to provide clearer descriptions and easier understanding of the technical features of the present invention, the parts in the drawings are not drawn according to relative dimensions, and some dimensions have been exaggerated compared with other relevant dimensions; irrelevant details are not fully drawn in order to simplify the drawing.

Fig. 1 to 2 show a first embodiment of the present invention, the electronic paper device includes a surface cover module 1 and an electronic paper display module 2.

The surface cover plate module 1 is composed of a top layer 11, a touch sensor 12 and a bottom layer 13; wherein, the top layer 11 is a high light transmittance thin plate with excellent mechanical strength, such as various glass or polymethyl methacrylate (PMMA), and the thickness thereof is preferably between 2mm and 3mm, so that the plate has the advantages of impact resistance and light weight and easy processing, and the upper surface 110 of the top layer 11 is one or both of a hardened surface and an optical functional surface; the surface hardness of the hardened surface is greater than 7H (pen point hardness) so as to enable the upper surface 110 to have scratch resistance; the optical functional surface can be formed by chemical etching to form a fine rough surface on the upper surface 110 to form an anti-glare surface (AG), by coating to form an anti-reflection surface (AR), or by coating an optical film to form an anti-glare surface (AG) or an anti-reflection surface (AR); further, an opaque or low-transmittance decorative frame 112 is provided on the peripheral edge region of the bottom surface of the top layer 11, the decorative frame 112 is formed of an insulating material such as ink or photoresist (photoresist), and the insulating material is provided on the bottom surface of the top layer 11 by performing a printing, coating, or other technical means to form the decorative frame 112. Therefore, the processing procedures such as optical functional surfaces, decorative frames or ICONs (ICON) and the like can be realized more easily and directly on the surface cover plate, and the problem that the plate body weight and the production cost are multiplied due to the increase of the area of the surface cover plate in the prior art is solved.

In the first embodiment, the touch sensor 12 is a capacitive touch sensor, which is composed of an X-axis sensing layer and a Y-axis sensing layer, wherein the two sensing layers are insulated from each other, and the X-axis sensing layer and the Y-axis sensing layer are grounded and connected to a control circuit (not shown); the touch action area of the touch sensor 12 has an area specification corresponding to the visible area of the electronic paper display module 2, so that the image displayed by the electronic paper display module 2 can be matched as a touch input device, and a user can perform interactive operation with the image provided by the electronic paper display module 2 through the touch sensor 12, thereby forming a friendly machine interactive interface. In addition to the capacitive touch sensor, the touch sensor 12 may be a resistive touch sensor, an electromagnetic touch sensor, an acoustic touch sensor, a vibration wave touch sensor, an optical touch sensor, or a combination of two or more of the above, but the implementation range is not limited to the above.

The bottom layer 13 is a high light transmittance thin plate, such as various kinds of glass, polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), or cyclic olefin copolymer (COC/COP); preferably, the thickness of the bottom layer 13 is equal to or less than the thickness of the top layer 11.

The surface cover module 1 is formed by sequentially stacking the top layer 11, the touch sensor 12 and the bottom layer 13, and the layers are bonded together by optical cement, thereby forming a surface cover module with the required plate thickness.

The electronic paper display module 2 is a reflective display with low power consumption and flexibility, and uses electrophoresis technology or cholesterol liquid crystal technology to present image signals on the display surface of the electronic paper display module as image frames.

As shown in fig. 2, the surface cover module 1 is installed above the electronic paper display module 2, and the combined touch sensor 12 and the peripheral circuit area of the electronic paper display module 2 are located just below the decorative frame 112 of the surface cover module 1 and are shielded by the decorative frame 112, so as to improve the aesthetic property of the appearance of the whole device.

As can be seen from the foregoing description, the overall thickness of the surface cover module 1 after assembly can be adjusted by increasing or decreasing the thicknesses of the top layer 11 and the bottom layer 13; additionally, the utility model discloses do and regulate and control the gross thickness after this surface cover plate module 1 makes up through addding one deck or multilayer intermediate level.

Fig. 3 shows a second embodiment of the present invention, which is to add an intermediate layer 15 between the stacked layers of the surface cover module 1 of the first embodiment, wherein the intermediate layer can be optionally disposed between the top layer 11 and the bottom layer 13; the intermediate layer 15 is a thin layer with high light transmittance, and is made of various materials such as rigid plate materials, glass, polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), cyclic olefin copolymer (COC/COP), etc., or flexible film materials such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylene (PE), polypropylene (PP), polyether ether ketone (PEEK), polysulfone (PSF), polyether Sulfone (PEs), polycarbonate (PC), cyclic olefin copolymer (COC/COP), polyamide, polyimide, acrylic resin, vinyl series resin, and trivinyl cellulose (TAC); preferably, the thickness of the intermediate layer 15 is equal to or less than the thickness of the top layer 11 described above.

In the second embodiment of the present invention, the surface cover module 1 is formed by stacking the top layer 11, the touch sensor 12, the middle layer 15 and the bottom layer 13, and the layers are bonded together by the optical adhesive, thereby forming a surface cover module with a desired thickness.

Additionally, the utility model discloses do and choose the material of selecting for use intermediate level 15 in order to promote the resistant impact strength of the complex nature of this surface cover plate module 1 after constituteing through the change, for example the material of this intermediate level 15 uses Polycarbonate (PC) can be more than using glass to have shock-resistant efficiency.

Referring to fig. 4 and 5, a third embodiment of the present invention is to add an illumination module 3 between the surface cover module 1 and the electronic paper display module 2 according to the first or second embodiment, so as to provide auxiliary illumination for the electronic paper display module, thereby facilitating use without an external light source.

The lighting module 3 includes: two light bars 31 and a light guide plate 35; wherein, lamp strip 31 contains: a diffusion strip 311, a reflective plate 312 and two point light sources 313. The diffusion strip 311 is provided with a plurality of light scattering points 311a to make the brightness of the light uniform. The reflective plate 312 is used to cover the top surface and the long side of the diffusion strip 311, so as to reflect the light of the covered portion back into the diffusion strip 311, thereby reducing the light loss. The point light sources 313 are LEDs, and are disposed at the sides of the diffusion strips 311.

The light guide plate 35 is adjacent to the diffusion strip 311 at one side to receive the light source of the light bar 31 and turn the light source of the light bar 31 into a surface light source emitting downward. The area of the light guide plate 35 is matched with the visible area of the electronic paper display module 2, and a plurality of light scattering points (shown in the figure) can be arranged on the light guide plate 35, so that light can be uniformly distributed in the area of the whole light guide plate 35, and good illumination can be provided for the visible area of the electronic paper display module 2.

In addition, the peripheral edge region of the bottom surface of the bottom layer 13 of the surface cover module 1 is provided with a light-tight or low-transmittance light-shielding frame 132, and like the decorative frame 112 of the top layer 11, the light-shielding frame 132 is formed by an insulating material such as ink or photoresist, and the insulating material is disposed on the bottom surface of the bottom layer 13 by performing printing, coating and other technical means; as shown in fig. 4, the illumination module 3 is disposed between the surface cover module 1 and the electronic paper display module 2, and after the assembly, the light-shielding frame 132 can shield the illumination light source around the illumination module 3 from transmitting into the surface cover module 1, so as to avoid the frame-shaped halo phenomenon from forming and interfering with the image frame of the electronic paper display module 2.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. An electronic paper device, comprising:

the surface cover plate module is provided with a top layer, a touch sensor and a bottom layer, and the touch sensor is arranged between the top layer and the bottom layer; and

an electronic paper display module; the surface cover plate module is arranged above the electronic paper display module.

2. The device of claim 1, wherein the top layer of the surface cover module is a thin layer with high light transmittance, the top surface of the top layer is a hardened surface or an optically functional surface, and a decorative frame made of opaque or low light transmittance material is disposed at the peripheral edge region of the bottom surface of the top layer.

3. The electronic paper device of claim 2, wherein the surface cover module further comprises at least one intermediate layer, and the intermediate layer is disposed between the top layer and the bottom layer.

4. The electronic paper device of claim 3, wherein the material of the top layer, the bottom layer, and the middle layer is one of glass, polymethyl methacrylate, polycarbonate, polyester, cyclic olefin copolymer, or cyclic olefin polymer.

5. The electronic paper device of claim 1, wherein the touch sensor is selected from the group consisting of a capacitive touch sensor, a resistive touch sensor, an electromagnetic touch sensor, an acoustic wave touch sensor, a vibration wave touch sensor, and an optical touch sensor.

6. The electronic paper device of claim 1, further comprising an illumination module disposed between the cover surface module and the electronic paper display module.

7. The electronic paper device of claim 6, wherein a peripheral edge region of the bottom surface of the bottom layer of the surface cover module is provided with a light-shielding frame, and the light-shielding frame is formed of an opaque or low-transmittance material.

8. The electronic paper device of claim 2, wherein the optically functional surface is an anti-glare surface or an anti-glare surface.