Paper-like display screens and display devices

Abstract

This invention provides a paper-like display screen and display device. The paper-like display screen includes an anti-glare film, a cover plate, a first transparent optical adhesive layer, and an OLED display panel stacked together. The side of the anti-glare film away from the cover plate has a paper-like texture structure capable of diffusely reflecting incident light. According to this invention, a paper-like display screen and display device that reduces glare and improves image clarity can be provided.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically to a paper-like display screen and display device. Background Technology

[0002] Organic light-emitting diode (OLED) paper-like display technology, also known as soft-light screen technology, is widely used in eye-protection displays, flexible terminals, and e-reading fields due to its advantages such as no backlight, self-illumination, flexibility, and paper-like visual experience. Currently, some OLED paper-like displays suffer from limitations in pixel structure design, with pixel aperture ratios generally below 20%. Large black, non-emissive areas exist between adjacent luminescent pixels, resulting in poor screen light uniformity and a high susceptibility to display flickering. To address this, existing technologies generally employ a light-diffusing film laminated to the light-emitting side of the display. This film's optical homogenization effect improves light uniformity and suppresses display flickering, representing the mainstream solution for ensuring the optimal performance of OLED paper-like displays.

[0003] Existing solutions rely on uniform light distribution films to optimize image quality. However, these films are expensive, have low production yields, and result in high production costs. Meanwhile, traditional screens are not only limited by pixel structure, leading to uneven light emission and poor flickering, but also glare, which interferes with image clarity. Summary of the Invention

[0004] The present invention was made in view of the above-mentioned situation, and its purpose is to provide a paper-like display screen and display device that can reduce glare and improve image clarity.

[0005] To this end, a first aspect of the present invention provides a paper-like display screen, comprising an anti-glare film, a cover plate, a first transparent optical adhesive layer, and an OLED display panel stacked together. The side of the anti-glare film away from the cover plate has a paper-like texture structure capable of diffusely reflecting irradiated light. In the present invention, by providing an anti-glare film with a paper-like texture structure on one side of the cover plate, glare can be reduced and image clarity improved.

[0006] In addition, in the paper-like display screen according to the first aspect of the present invention, optionally, the cover plate is a glass cover plate, and the side of the glass cover plate away from the first transparent optical adhesive layer is a smooth surface.

[0007] In addition, in the paper-like display screen according to the first aspect of the present invention, optionally, the paper-like texture structure is a raised structure arranged in an array.

[0008] In addition, in the paper-like display screen according to the first aspect of the present invention, optionally, the height of the raised structure is 0.1 micrometer to 1.0 micrometer, and the spacing between adjacent raised structures is 10 micrometers to 100 micrometers.

[0009] Additionally, in the paper-like display screen according to the first aspect of the present invention, a second transparent optical adhesive layer may optionally be further included, disposed between the anti-glare film and the cover plate.

[0010] In addition, in the paper-like display screen according to the first aspect of the present invention, optionally, the light transmittance of the first transparent optical adhesive layer and the second transparent optical adhesive layer is 95% or more, and the thickness of the first transparent optical adhesive layer and the second transparent optical adhesive layer is 0.2 mm or less.

[0011] In addition, in the paper-like display screen according to the first aspect of the present invention, optionally, the OLED display panel is made by inkjet printing or photolithography, and the pixel aperture ratio of the OLED display panel is greater than or equal to 60%.

[0012] In addition, in the paper-like display screen according to the first aspect of the present invention, optionally, the height of the raised structure is 0.2 micrometers to 0.6 micrometers, and the spacing between adjacent raised structures is 30 micrometers to 50 micrometers.

[0013] In addition, in the paper-like display screen according to the first aspect of the present invention, optionally, the thickness of the anti-glare film is less than or equal to 0.15 mm, and the light transmittance of the anti-glare film is greater than or equal to 90%.

[0014] A second aspect of the present invention provides a display device comprising the paper-like display screen described in the first aspect.

[0015] According to the present invention, a paper-like display screen and display device that reduce glare and improve image clarity can be provided. Attached Figure Description

[0016] The invention will now be explained in further detail by way of example only with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram illustrating the structure of a paper-like display screen according to an example of the present invention.

[0018] Figure 2 This is a schematic diagram illustrating the structure of the anti-glare film according to an example of the present invention.

[0019] Reference numerals: 1…Anti-glare film; 2…Cover plate; 3…First transparent optical adhesive layer; 4…OLED display panel; 5…Second transparent optical adhesive layer; 11…Paper-like texture structure. Detailed Implementation

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same parts, and repeated descriptions are omitted. Furthermore, the drawings are merely schematic diagrams, and the proportions of the parts or the shapes of the parts may differ from the actual figures.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. The terms "comprising" and "having," and any variations thereof, referring to a process, method, system, product, or apparatus that includes or has a series of steps or units, are not necessarily limited to those explicitly listed, but may include or have other steps or units not explicitly listed or inherent to these processes, methods, products, or apparatuses. All methods described in this invention can be performed in any suitable order unless otherwise indicated herein or clearly contradicted by the context.

[0022] Figure 1 This is a schematic diagram illustrating the structure of a paper-like display screen in the prior art.

[0023] Reference Figure 1 The first aspect of the present invention provides a paper-like display screen, which mainly serves as the display end of a display device for displaying images or interacting with users.

[0024] A paper-like display screen may include an anti-glare film 1, a cover plate 2, a first transparent optical adhesive layer 3, and an OLED display panel 4, which are stacked together.

[0025] In some examples, the side of the anti-glare film 1 away from the cover plate 2 has a paper-like texture structure 11 that can diffusely reflect incident light. In this invention, by providing an anti-glare film 1 with a paper-like texture structure 11 on one side of the cover plate 2, glare can be reduced and the image clarity of the paper-like display screen can be improved.

[0026] Specifically, by setting the side of the anti-glare film 1 away from the cover plate 2 to a paper-like texture structure 11 that can diffusely reflect incident light, the environmental reflection caused by the specular reflection of the cover plate 2 can be reduced, thereby improving the display effect of the image on the paper-like display screen.

[0027] In some examples, the cover plate 2 can be a glass cover plate. The side of the glass cover plate away from the first transparent optical adhesive layer 3 can be a smooth surface. In this case, unlike existing OLED paper-like display technology, the surface of the glass cover plate in the prior art needs to be etched to make it rough in order to achieve diffuse reflection and paper-like effect, which is costly and pollutes the environment. In contrast, the glass cover plate of the present invention uses a traditional mirror surface (i.e., a smooth mirror surface), and improves the image presentation effect by setting an anti-glare film 1 with a paper-like texture structure 11 on the glass cover plate. Thus, the process can be simplified, the manufacturing cost can be reduced, and it is more environmentally friendly.

[0028] In some examples, the thickness of cover plate 2 can be less than 0.6 mm. The transmittance of cover plate 2 can be above 95%.

[0029] Figure 2 This is a schematic diagram illustrating the structure of the anti-glare film according to an example of the present invention.

[0030] Reference Figure 2 In some examples, the paper-like texture structure 11 can be an array of raised structures. In some examples, the raised structures of the paper-like texture structure 11 can be trapezoidal, hemispherical, pyramidal, or other irregular shapes. Its surface roughness can be controlled between 0.5 micrometers and 2.0 micrometers to further enhance the diffuse reflection effect while avoiding affecting the resolution of the displayed image.

[0031] In some examples, the height H of the protrusion can be from 0.1 micrometers to 1.0 micrometers, preferably from 0.2 micrometers to 0.6 micrometers. In some examples, the spacing L between adjacent protrusions can be from 10 micrometers to 100 micrometers, preferably from 30 micrometers to 50 micrometers.

[0032] In some examples, the paper-like display screen may also include a second transparent optical adhesive layer 5 disposed between the anti-glare film 1 and the cover plate 2. This facilitates a secure bond between the two.

[0033] In some examples, the light transmittance of the first transparent optical adhesive layer 3 and the second transparent optical adhesive layer 5 can be above 95%. The thickness of the first transparent optical adhesive layer 3 and the second transparent optical adhesive layer 5 can be less than 0.2 mm.

[0034] In some examples, OLED display panels can be manufactured using inkjet printing or photolithography. The pixel aperture ratio of the OLED display panel is greater than or equal to 60%. Both of these processes can increase the pixel aperture ratio of the OLED display panel to 60%. This solves the problems of screen flicker and uneven light emission present in traditional OLED display panels.

[0035] In some examples, the thickness of the anti-glare film 1 can be less than or equal to 0.15 mm. The light transmittance of the anti-glare film 1 is greater than or equal to 90%.

[0036] A second aspect of the present invention provides a display device that may include the paper-like display screen of the first aspect.

[0037] While the invention has been specifically described above in conjunction with the accompanying drawings and examples, it is to be understood that the above description does not limit the invention in any way. Those skilled in the art can make modifications and variations to the invention as needed without departing from its essential spirit and scope, and all such modifications and variations fall within the scope of the invention.

Claims

1. A paper-like display screen, characterized in that, The device includes an anti-glare film, a cover plate, a first transparent optical adhesive layer, and an OLED display panel, all stacked together. The side of the anti-glare film away from the cover plate has a paper-like texture structure that can diffusely reflect irradiated light.

2. The paper-like display screen according to claim 1, characterized in that, The cover plate is a glass cover plate, and the side of the glass cover plate away from the first transparent optical adhesive layer is a smooth surface.

3. The paper-like display screen according to claim 1, characterized in that, The paper-like texture structure is a raised structure arranged in an array.

4. The paper-like display screen according to claim 3, characterized in that, The height of the protrusion is 0.1 micrometers to 1.0 micrometers, and the spacing between adjacent protrusions is 10 micrometers to 100 micrometers.

5. The paper-like display screen according to claim 1, characterized in that, It also includes a second transparent optical adhesive layer disposed between the anti-glare film and the cover plate.

6. The paper-like display screen according to claim 5, characterized in that, The light transmittance of the first transparent optical adhesive layer and the second transparent optical adhesive layer is above 95%, and the thickness of the first transparent optical adhesive layer and the second transparent optical adhesive layer is below 0.2 mm.

7. The paper-like display screen according to claim 1, characterized in that, The OLED display panel is manufactured using inkjet printing or photolithography, and the pixel aperture ratio of the OLED display panel is greater than or equal to 60%.

8. The paper-like display screen according to claim 4, characterized in that, The height of the protrusion is 0.2 micrometers to 0.6 micrometers, and the spacing between adjacent protrusions is 30 micrometers to 50 micrometers.

9. The paper-like display screen according to claim 1, characterized in that, The thickness of the anti-glare film is less than or equal to 0.15 mm, and the light transmittance of the anti-glare film is greater than or equal to 90%.

10. A display device, characterized in that, Includes the paper-like display screen as described in any one of claims 1-9.

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