Cover plate assembly and electronic equipment

Abstract

The utility model provides a cover plate assembly and electronic equipment, and the cover plate assembly comprises a cover plate which comprises a first region, the cover plate is provided with a light-emitting side and a non-light-emitting side which are opposite to each other, the non-light-emitting side is provided with a light shielding layer, the light shielding layer is located in the first region, and the light shielding layer is provided with a hollow contour limiting region; the partial light-transmitting substrate is attached to the non-light-emitting side of the cover plate, the partial light-transmitting substrate comprises a light-transmitting substrate and a first partial light-transmitting shading layer arranged on the light-transmitting substrate, the first partial light-transmitting shading layer comprises a first partial light-transmitting pattern allowing partial light to transmit, the orthographic projection of the first partial light-transmitting shading layer on the cover plate is located in a first area, and the orthographic projection of the first partial light-transmitting shading layer on the cover plate is located in a second area; the orthographic projection of the first part of light-transmitting pattern and the orthographic projection of the contour limiting area on the cover plate at least partially coincide, so that the overlapping area of the contour limiting area and the first part of light-transmitting pattern forms a light-transmitting pattern area. According to the cover plate assembly and the electronic equipment, the problems that characters, icons or atmosphere lamps and the like on the cover plate are rough in light-emitting pattern pictures with uniform light transmission or gradual light transmission and the like can be solved.

Description

A cover assembly and electronic device Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a cover plate assembly and electronic device. Background Technology

[0002] With the development of intelligent display technology, more application demands are being placed on display products. For example, a light-shielding layer exists around the cover plate of a display module. To increase product diversity and aesthetics, illuminated patterns such as characters or icons with a fixed light transmittance can be set in the light-shielding layer to display special symbolic information. Taking automotive display modules as an example, illuminated patterns such as malfunction indicator lights, icons, or ambient lights may be set on the cover plate.

[0003] In related technologies, characters or icons are formed by creating a hollowed-out area in the light-shielding layer of the cover plate and then fabricating a partially translucent light-shielding layer within that hollowed-out area. The higher the uniformity of the light transmittance of the partially translucent light-shielding layer, the better. However, in these related technologies, the luminous patterns such as characters, icons, or ambient lights on the cover plate have coarse lines, large graininess, and poor uniformity of light transmittance. Summary of the Invention

[0004] In order to solve at least one of the technical problems in the above-mentioned related technologies, the purpose of this disclosure is to provide a cover plate assembly and a display device.

[0005] The technical solutions provided in this disclosure are as follows:

[0006] In a first aspect, embodiments of this disclosure provide a cover plate assembly, including:

[0007] A cover plate includes a first region, the cover plate having opposite light-emitting and non-light-emitting sides, wherein a light-shielding layer is provided on the non-light-emitting side, the light-shielding layer is located in the first region, and the light-shielding layer has a hollowed-out contour-defining area;

[0008] A partially light-transmitting substrate is attached to the non-light-emitting side of the cover plate. The partially light-transmitting substrate includes a light-transmitting base and a first partially light-transmitting and light-shielding layer disposed on the light-transmitting base. The first partially light-transmitting and light-shielding layer includes a first partially light-transmitting pattern that allows some light to pass through. The orthographic projection of the first partially light-transmitting and light-shielding layer on the cover plate is located in the first region, and the first partially light-transmitting pattern and the orthographic projection of the contour-defining region on the cover plate at least partially overlap, so that the overlapping area of ​​the contour-defining region and the first partially light-transmitting pattern forms a light-transmitting pattern area.

[0009] For example, the first portion of the light-transmitting pattern completely overlaps with the orthographic projection of the contour-defined area onto the cover plate.

[0010] For example, the light transmittance of at least a portion of the first portion of the light-transmitting pattern gradually changes along a predetermined gradient direction.

[0011] For example, the predetermined gradient direction includes: a direction parallel to the light-transmitting substrate and pointing from the center of the first portion of the light-transmitting pattern to the edge of the first portion of the light-transmitting pattern; or, a direction parallel to the light-transmitting substrate and pointing from one edge of the first portion of the light-transmitting pattern to the other edge of the first portion of the light-transmitting pattern.

[0012] For example, the light-transmitting substrate has a first surface facing the cover plate and a second surface facing away from the cover plate; wherein, the first portion of the light-transmitting and light-shielding layer is located on the first surface and / or the second surface, and at least one of the first surface and the second surface has diffused particles distributed on it.

[0013] For example, the first portion of the light-transmitting and light-shielding layer is located on the first surface, and the diffused particles are distributed at least on the first surface.

[0014] For example, the light transmittance of the light-shielding layer is less than the light transmittance of the first portion of the light-transmitting pattern.

[0015] For example, the light transmittance of the first portion of the light-transmitting pattern is 1.5 to 2%.

[0016] For example, a second light-transmitting pattern is provided on the non-light-emitting side of the cover plate. The orthographic projection of the second light-transmitting pattern on the cover plate is located within the contour-defined area. The second light-transmitting pattern includes multiple opening areas and partial light-transmitting areas located between adjacent opening areas.

[0017] For example, the light transmittance of the second part of the light-transmitting pattern is greater than the light transmittance of the first part of the light-transmitting and light-shielding layer.

[0018] For example, the light transmittance of the light-shielding layer is less than the light transmittance of the overlapping area between the second part of the light-transmitting pattern and the first part of the light-transmitting light-shielding layer.

[0019] For example, both the opening area and the partially translucent area are strip patterns, and the partially translucent area and the opening area are arranged alternately in sequence.

[0020] For example, the partially transparent substrate further includes an optical adhesive layer, through which the partially transparent substrate is bonded to the cover plate.

[0021] Secondly, embodiments of this disclosure provide an electronic device, including: a light source; and a cover plate assembly provided in embodiments of this disclosure, wherein the light source is disposed on the non-light-emitting side of the cover plate, and the light emitted by the light source is at least partially incident on the first portion of the light-transmitting pattern.

[0022] For example, the electronic device includes a display device.

[0023] For example, the display device further includes:

[0024] A display panel has a display side and a backlight side disposed opposite to each other. The cover plate assembly is stacked on the display side of the display panel, and the cover plate extends at least partially beyond the edge of the display panel. The partially light-transmitting substrate is disposed in the area of ​​the cover plate that extends beyond the edge of the display panel.

[0025] A backlight source is disposed on the backlight side of the display panel, and the backlight source serves as the light source, emitting at least a portion of the light that is incident on the first portion of the light-transmitting pattern.

[0026] The embodiments disclosed herein have at least the following technical effects:

[0027] In the cover plate assembly and electronic device provided in this embodiment, a light-shielding layer is provided in the first region of the cover plate, a hollowed-out contour-defining area is provided on the light-shielding layer, and a partially light-transmitting substrate is separately provided. The partially light-transmitting substrate has a partially light-transmitting pattern corresponding to the position of the contour-defining area, and the partially light-transmitting substrate can be attached to the cover plate. Light from the backlight source can partially pass through the first partially light-transmitting pattern on the partially light-transmitting substrate and the contour-defining area on the cover plate. The overlapping area of ​​the first partially light-transmitting pattern and the contour-defining area forms a light-transmitting pattern area, which can define the outline of luminous patterns such as characters, icons, or ambient lights.

[0028] By separately setting a portion of the light-transmitting substrate, a partial light-transmitting pattern is formed on the light-transmitting base of the partial light-transmitting substrate. The partial light-transmitting pattern can be formed on the light-transmitting base of the partial light-transmitting substrate first, and then the partial light-transmitting substrate is attached to the cover plate. Compared with the solution of directly making the partial light-transmitting shielding layer on the cover plate, the formation process of the partial light-transmitting pattern is easier to control when forming the partial light-transmitting pattern on the light-transmitting base, and the light transmittance of the resulting partial light-transmitting shielding layer is also more uniform. This can improve the problems of rough lines and poor light transmittance uniformity of characters or icons. Attached Figure Description

[0029] Figure 1 shows a schematic cross-sectional view of an electronic device in some embodiments of this disclosure;

[0030] Figure 2 shows a schematic diagram of a partial cross-sectional structure of the first region of the cover plate assembly in some embodiments of this disclosure;

[0031] Figure 3 shows one of the partial top views of the first region of the cover plate assembly in some embodiments of this disclosure;

[0032] Figure 4 shows a second partial top view of the first region of the cover plate assembly in some embodiments of this disclosure;

[0033] Figure 5 shows a schematic diagram of the first part of the light-transmitting and light-shielding layer in some embodiments of this disclosure;

[0034] Figure 6 is a schematic diagram of a partial cross-sectional structure of the first region of the cover plate assembly in some other embodiments of this disclosure;

[0035] Figure 7 shows one of the partial top views of the first region of the cover plate assembly in some other embodiments of this disclosure;

[0036] Figure 8 shows a second partial top view of the first region of the cover plate assembly in some other embodiments of this disclosure;

[0037] Figure 9 shows a schematic diagram of a partial area of ​​the light-transmitting pattern area in some embodiments of this disclosure.

[0038] Figure 10 is a schematic diagram of the structure of some light-transmitting substrates in some embodiments of this disclosure. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0040] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0041] The features such as "parallel," "perpendicular," and "identical" used in the embodiments of this disclosure include features in the strict sense of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include certain tolerances. Taking into account the measurement and the tolerances associated with the measurement of a specific quantity (e.g., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of said value.

[0042] Furthermore, throughout this document, unless otherwise defined, the terms “substantially,” “essentially,” “approximately,” and “about” are used to describe and explain small variations. When used with an event or situation, these terms can cover situations where the event or situation occurs precisely or approximately. For example, when used with a numerical value, these terms can include a range of variation of the numerical value less than or equal to 10%, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%. The term “substantially coplanar” can refer to two surfaces arranged along the same plane within a micrometer range, for example, within 40 μm, 30 μm, 20 μm, 10 μm, or 1 μm.

[0043] It should be understood that, in the exemplary embodiments of this disclosure, when a layer or element is referred to as being on another layer or substrate, it may mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate. "A and B are set in the same layer" means that after A and B are formed using the same film deposition process to form a film layer for forming a specific pattern, the layer structure is formed in one patterning process using the same photomask.

[0044] Before providing a detailed description of the embodiments of this disclosure, the relevant technologies are explained below:

[0045] In related technologies, a light-shielding layer is provided on the cover plate. To increase product diversity and aesthetics, luminous patterns such as characters, icons, or ambient lights with a fixed light transmittance can be set on the light-shielding layer to display special symbolic information. For example, in the case of an automotive display module, luminous patterns such as malfunction indicator lights, icons, and ambient lights are set on the cover plate.

[0046] However, in related technologies, the lines of luminous patterns such as characters, icons, or ambient lights on the cover plate are rough, with large granularity and poor uniformity of light transmittance.

[0047] The applicant has discovered through research that one of the reasons for the aforementioned problems is:

[0048] In related technologies, a hollow area is set in the light-shielding layer on the cover plate. The hollow area defines the outline of luminous patterns such as characters, icons or ambient lights. A partially translucent layer is made in the hollow area to allow some light to pass through, so as to form a translucent pattern area with a certain light transmittance. The higher the uniformity of the light transmittance of the partially translucent layer, the finer the lines of the image in the translucent pattern area.

[0049] However, the partially transparent layer is generally made of partially transparent ink or other materials and is formed on the cover plate by printing or other methods. The cover plate is generally made of rigid materials such as glass. The partially transparent and light-blocking materials are not easy to adhere to the cover plate, resulting in low adhesion reliability and poor uniformity of the partially transparent layer.

[0050] Furthermore, during the processing of the cover plate, the size of the cover plate mother plate is relatively large, and there is also a light-blocking layer on the cover plate. This can cause some light-transmitting layers to form in the hollow area of ​​the light-blocking layer, making the process difficult to control. In addition, the uniformity of the printed light-transmitting layers is poor, resulting in rough and unrefined images of characters, icons, or ambient lights, with large ink particles.

[0051] With the increasing prevalence of cool ambient lighting and other applications on display module cover plates, the demand for characters or icons with gradient light transmittance is also growing. One way to achieve gradient characters, icons, or ambient lighting patterns is by forming a partially transparent and light-blocking layer with gradient light transmittance on the cover plate. However, as mentioned above, the resulting image is rough and lacks fine detail, with large ink grains leading to uneven brightness transitions. Another way to achieve gradient characters, icons, or ambient lighting patterns is by setting a gradient dot layer on the cover plate surface using an exposure and development process, achieving the gradient effect through variations in dot size. However, the gradient effect depends on the design and distribution of the dots, and it may not achieve the desired aesthetic effect for some intricate patterns.

[0052] To address at least one of the aforementioned technical problems, this disclosure provides a cover plate assembly and a display device.

[0053] It should be noted that the term "partially transparent" as used in this application can mean that light is allowed to pass through partially, but not completely transparent. For example, when "partially transparent" is used in conjunction with a "light-blocking layer" or "pattern," it can mean that the light transmittance of the light-blocking layer or pattern is greater than 0% and less than 100%.

[0054] As shown in Figure 1, the cover plate assembly provided in this embodiment includes: a cover plate 100 and a partially light-transmitting substrate 200.

[0055] As shown in Figures 1 to 9, the cover plate 100 includes a first region B. The cover plate 100 has a light-emitting side S1 and a non-light-emitting side S2 disposed opposite to each other. The non-light-emitting side S2 may refer to the side where a light source (such as the backlight source of a display module) is disposed. The light-emitting side S1 may refer to the side where light from the light source is emitted after passing through the cover plate 100. A light-shielding layer 110 is provided on the non-light-emitting side S2, and the light-shielding layer 110 is located in the first region B.

[0056] The light-shielding layer 110 has a contour-defining area 111. The contour-defining area 111 is hollowed out, allowing light to be blocked by the light-shielding layer 110. For example, the material of the light-shielding layer 110 includes, but is not limited to, ink or black matrix material.

[0057] A partially light-transmitting substrate 200 is attached to the non-light-emitting side S2 of the cover plate 100. The partially light-transmitting substrate 200 includes a light-transmitting base 210 and a first partially light-transmitting and light-shielding layer 220 disposed on the light-transmitting base 210. The first partially light-transmitting and light-shielding layer 220 includes a first partially light-transmitting pattern 221 that allows some light to pass through. The orthographic projection of the first partially light-transmitting and light-shielding layer 220 on the cover plate 100 is located in the first region B to avoid affecting the display effect of the visible area VA.

[0058] Furthermore, the orthographic projections of the first portion of the light-transmitting pattern 221 and the outline defining area 111 on the cover plate 100 at least partially overlap. The overlapping area of ​​the first portion of the light-transmitting pattern 221 and the outline defining area 111 forms the light-transmitting pattern area C within the first region B. The light-transmitting pattern area C can define the outline of luminous patterns such as characters, icons, or ambient lights. Light emitted by the light source located on the non-light-emitting side S2 of the cover plate 100 can partially pass through the light-transmitting pattern area C, forming luminous patterns such as characters, icons, or ambient lights with a certain light transmittance. The light transmittance of the first portion of the light-transmitting shielding layer 220 is greater than that of the shielding layer 110, so that the light-transmitting pattern area C can be clearly distinguished from the brightness of the shielding layer 110.

[0059] For example, the material of the first part of the light-transmitting and light-shielding layer 220 can be ink. The first part of the light-transmitting and light-shielding layer 220 is made of partially light-transmitting ink, and the light-shielding layer 110 can be made of partially light-transmitting ink or opaque ink. The light transmittance of the partially light-transmitting ink of the first part of the light-transmitting and light-shielding layer 220 is greater than the light transmittance of the partially light-transmitting ink or opaque ink of the light-shielding layer 110.

[0060] For example, the light-shielding layer 110 has a low light transmittance, less than 1.5%, to achieve the light-shielding effect. The light transmittance of the first part of the light-transmitting light-shielding layer 220 can be 1.5% to 2%. However, it is not limited to this.

[0061] In the above scheme, a light-shielding layer 110 is provided in the first region B of the cover plate 100, and a hollowed-out contour-defining region 111 is provided on the light-shielding layer 110. A partially light-transmitting substrate 200 is separately provided, and the partially light-transmitting substrate 200 has a first partially light-transmitting pattern 221 corresponding to the position of the contour-defining region 111. The partially light-transmitting substrate 200 can be attached to the cover plate 100. The light emitted by the backlight 400 can partially pass through the first partially light-transmitting pattern 221 on the partially light-transmitting substrate 200 and the contour-defining region 111 on the cover plate 100. The overlapping area of ​​the contour-defining region 111 and the first partially light-transmitting pattern 221 forms the light-transmitting pattern region C. The light-transmitting pattern region C can define the outline of luminous patterns such as characters, icons, or ambient lights.

[0062] By separately setting a partially transparent substrate 200, the first partially transparent pattern 221 is formed on the transparent substrate 210 of the partially transparent substrate 200. In this way, the formation process of the first partially transparent pattern 221 is independent from the manufacturing process of the cover plate 100. The first partially transparent pattern 221 can be formed on the transparent substrate 210 of the partially transparent substrate 200 first, and then the partially transparent substrate 200 is attached to the cover plate 100. Compared with the solution of directly manufacturing the partially transparent light-shielding layer 110 on the cover plate 100, the formation process of the first partially transparent pattern 221 is easier to control when forming the first partially transparent pattern 221 on the transparent substrate 210, and the light transmittance of the first partially transparent light-shielding layer 220 is also more uniform. This can improve the problems of rough lines and poor light transmittance uniformity of luminous patterns such as characters, icons or ambient lights.

[0063] In some embodiments, as shown in FIG1, a cover plate 100 may be disposed in a display module and on the display side of a display panel 300, with the light-emitting side S1 of the cover plate 100 being the side away from the display panel 300. The cover plate 100 may include a visible area VA and a peripheral area surrounding the visible area VA. The visible area VA at least partially overlaps with the display area of ​​the display panel 300, and the first area B may include the peripheral area. The backlight 400 of the display module can be used as the light source for the luminous pattern. Part of the light from the backlight 400 is incident on the peripheral area of ​​the cover plate 100 and exits through the light-transmitting pattern area C, thus displaying the luminous pattern on the cover plate 100. For example, in some application scenarios, the luminous pattern may include characters, icons, etc.

[0064] In other embodiments, a display panel may not be provided on the non-light-emitting side S2 of the cover plate 100; instead, only a light source for the luminous pattern may be provided. The light source can be a backlight 400 or any other suitable light source. The luminous pattern on the cover plate 100 is displayed by emitting light into the light-transmitting pattern area C through the light source. For example, in some applications, the luminous pattern may include ambient lighting, etc.

[0065] Taking the first part of the light-transmitting pattern 221 as an example, which is made of partially light-transmitting ink, it can be formed on the light-transmitting substrate 210 by means of inkjet printing or other methods. The light-transmitting substrate 210 can be formed of a light-transmitting material, which can be a soft light-transmitting material or a hard light-transmitting material. For example, the light-transmitting substrate 210 can be made of PET (polyethylene terephthalate) film.

[0066] PET film has good optical transmittance and heat resistance, maintaining relatively stable performance in high-temperature environments. It also possesses high mechanical strength, with high tensile strength and tear resistance, and good chemical stability, making it resistant to corrosion. It is understood that the 210 light-transmitting substrate material is not limited to this.

[0067] In some embodiments, the first portion of the light-transmitting pattern 221 and the outline defining area 111 are completely superimposed on the cover plate 100. It is understood that in other embodiments, the first portion of the light-transmitting pattern 221 and the outline defining area 111 may only partially overlap on the cover plate 100. Referring to Figure 3, the overlapping area of ​​the first portion of the light-transmitting pattern 221 and the outline defining area 111 on the cover plate 100 defines a light-transmitting pattern area, which defines the outline of a luminous pattern such as characters, icons, or ambient lighting.

[0068] In some embodiments, as shown in Figures 4 and 5, the light transmittance of at least a portion of the first portion of the light-transmitting pattern 221 gradually changes along a predetermined gradient direction. By designing the first portion of the light-transmitting pattern 221 to have a gradient in light transmittance in at least a portion of the area, the light from the backlight 400 can pass through the first portion of the light-transmitting pattern 221 to achieve a light-dark gradient effect, and after passing through the outline-defined area 111, a gradient image effect of luminous patterns such as characters, icons, or ambient lights can be achieved.

[0069] The material of the first part of the light-transmitting and light-blocking layer 220 can be partially light-transmitting ink. When the first part of the light-transmitting and light-blocking layer 220 is formed on the light-transmitting substrate 210, it can be achieved by processes such as inkjet printing. Taking inkjet printing as an example, the light transmittance of the first part of the light-transmitting pattern 221 can be gradually changed by controlling the process conditions, such as ink concentration, ink color, and layer printing.

[0070] For the first part of the translucent pattern 221, to achieve its gradient effect in light transmittance, if the gradient partially translucent ink layer is made on the cover plate 100, the process is difficult to control. Compared with a partially translucent ink layer with fixed light transmittance, the lines of the image are rougher, the ink particles are larger, and the uniformity of light transmittance is worse. However, in this application, by independently setting the first part of the translucent pattern 221 on the translucent substrate 210, the gradient first part of the translucent pattern 221 can be avoided by directly making it on the cover plate 100. This can significantly improve the uniformity of the gradient transition of luminous patterns such as characters, icons, or ambient lights, resulting in finer lines and smaller ink particles.

[0071] In some embodiments, as shown in Figures 4 and 5, the predetermined gradient direction includes a direction parallel to the light-transmitting substrate 210 and pointing from the center of the first portion of the light-transmitting pattern 221 to its edge. That is, the first portion of the light-transmitting pattern 221 can have a gradient around its perimeter. For example, the light transmittance of the first portion of the light-transmitting pattern 221 may gradually increase or decrease from its center to its edge, or the light transmittance may first increase and then decrease, or the light transmittance may first decrease and then decrease, etc.

[0072] In other embodiments, the predetermined gradient direction includes a direction parallel to the light-transmitting substrate 210 and pointing from one edge of the first portion of the light-transmitting pattern 221 to the other edge of the first portion of the light-transmitting pattern 221. That is, the first portion of the light-transmitting pattern 221 can be gradient vertically. For example, the light transmittance of the first portion of the light-transmitting pattern 221 gradually increases or decreases from one side to the other, or the light transmittance first increases and then decreases, or the light transmittance first decreases and then decreases, etc.

[0073] Furthermore, it should be noted that the first portion of the light-transmitting pattern 221 can be a gradient across the entire area or only a portion thereof. The gradient area can be divided into multiple partitions based on the shape and other characteristics of the light-emitting pattern. The gradient direction and transmittance of each partition can be the same or different. For example, Figure 5 illustrates a schematic diagram of the first portion of the light-transmitting and light-shielding layer 220 on a partially light-transmitting substrate 200 in one embodiment. Referring to Figure 5, the first portion of the light-transmitting pattern 221 can be divided into a first partition 2211 and a second partition 2222. The transmittance of both the first partition 2211 and the second partition 2222 is gradient, and the gradient direction and transmittance are different.

[0074] The gradient direction of the first part of the translucent pattern 221 is not limited here.

[0075] It should be noted that when the first part of the light-transmitting pattern 221 is a gradient pattern with significant light-dark transitions, the gradient transition effect in the dark area can be improved by secondary inkjet printing. In this embodiment, since the first part of the light-transmitting pattern 221 is set separately on the light-transmitting substrate 210, independent of the cover plate 100, compared to the method of directly forming part of the light-transmitting ink on the cover plate in related technologies, the size of the light-transmitting substrate 210 can be smaller than the size of the cover plate mother plate, and the secondary inkjet printing process is easier to implement and more convenient to operate.

[0076] In some exemplary embodiments, as shown in FIG10, the light-transmitting substrate 210 has a first surface 211 facing the cover plate 100 and a second surface 212 facing away from the cover plate 100; wherein, a first portion of the light-transmitting and light-shielding layer 220 is located on the first surface 211 and / or the second surface 212, and at least one of the first surface 211 and the second surface 212 is provided with diffused particles 230.

[0077] The above scheme can achieve an optical diffusion effect by setting diffusion particles 230 on the surface of the light-transmitting substrate 210, thereby further improving the uniformity of light transmittance.

[0078] Taking Figure 10 as an example, in some embodiments, the first portion of the light-transmitting and light-shielding layer 220 is located on the first surface 211, and at least the first surface 211 is distributed with diffusing particles 230. Thus, with the diffusing particles 230 distributed on the first surface 211 where the first portion of the light-transmitting pattern 221 is formed on the light-transmitting substrate 210, when a portion of the light-transmitting and light-shielding material (e.g., ink) is sprayed, the light-transmitting and light-shielding material can be uniformly and reliably adhered to the diffusing particles 230, ensuring the continuous effect of the image under high and low temperature reliability. Furthermore, the uniform light effect of the diffusing particles 230 can make the brightness more uniform. In particular, for gradient light, the gradient light can transition more evenly.

[0079] For example, in some embodiments, as shown in FIG10, diffuse particles 230 are provided on both the first surface 211 and the second surface 212. This can further improve the brightness uniformity, especially the more uniform transition of the gradient light.

[0080] Taking a PET film as an example of a transparent substrate 210, the process of forming diffusion particles 230 on the surface of the PET film is a common and relatively easy-to-implement technique. For example, diffusion particles 230 can be formed on the surface of the PET film through additive mixing, surface coating, physical foaming, surface modification, heat treatment, or solvent treatment.

[0081] Specifically, the additive mixing process refers to adding specific diffusing particles 230 (such as silica, titanium oxide, or polymer microparticles) to the PET resin during the PET film preparation process. These particles are uniformly dispersed during film formation through melt mixing or solution casting, thereby forming a diffusion layer on the film surface. The surface coating process refers to applying a coating containing diffusing particles 230 to the surface of the PET film. This can be done by spraying, brushing, or dipping. The diffusing particles 230 in the coating scatter light as it passes through the film. The physical foaming process refers to using a foaming agent to generate microbubbles during the extrusion or blow molding of the PET film. These bubbles exist as diffusing particles 230 within the film structure. This method effectively increases the surface roughness of the film, thereby improving the scattering effect. The surface modification process refers to treating the PET film surface through methods such as plasma treatment or chemical modification to change the surface properties of the film, promoting the adsorption or aggregation of certain microparticles (such as nanoparticles) on the film surface, thereby creating a diffusion effect. Heat treatment refers to the orientation or stretching process performed after the PET film is prepared. This process can guide certain added diffusing particles 230 to aggregate on the film surface, forming an ordered structure to enhance the scattering effect. Solvent treatment refers to treating the PET film with organic solvents, causing certain particles to dissolve or precipitate on the film surface, thereby forming particles on the surface. This method is used in the post-processing stage and can better control the particle distribution.

[0082] It should be noted that, in order to increase the light transmittance of the gradient luminescent pattern, the light-transmitting substrate 210 can be a transparent substrate without diffusion particles 230 on its surface, such as a transparent PET substrate. However, a transparent substrate without diffusion particles 230 has a higher light transmittance than a light-transmitting substrate 210 with diffusion particles 230 on its surface, which reduces the image detail. To improve this problem, the inkjet volume of the first part of the light-transmitting pattern 221 can be increased, for example, by using a secondary inkjet process to increase the inkjet volume, so that the dark pattern area of ​​the luminescent pattern has a low light transmittance effect. In some practical applications, when a light-transmitting substrate 210 with diffusion particles 230 on its surface is selected, the light transmittance of this part of the light-transmitting substrate 200 varies from 0.8% to 2.7%. When a light-transmitting substrate 210 without diffusion particles 230 on its surface is selected, the inkjet volume can be increased by a secondary inkjet process, and the light transmittance of this part of the light-transmitting substrate 200 varies from 0.2% to 14%.

[0083] In one embodiment of this disclosure, the light transmittance of the light-shielding layer 110 is less than that of the first portion of the light-transmitting pattern 221. If the light transmittance of the first portion of the light-transmitting pattern 221 is too low, the backlight brightness of the backlight 400 may need to be increased, leading to increased costs. If the light transmittance of the first portion of the light-transmitting ink pattern is too high, there will be a significant color difference between the characters or icons and the surrounding light-shielding layer 110 of the cover plate 100, for example, a large color difference when the screen is off. Therefore, in some embodiments, the light transmittance of the first portion of the light-transmitting pattern 221 is 1.5% to 2%. However, it is not limited to this. In addition, taking an automotive display module as an example, it also involves whether the characters, icons, and other luminous patterns have a seamless black hiding effect when the screen is off, that is, a seamless black state where the characters, icons, and other luminous patterns have no significant color difference from the surrounding light-shielding layer 110 of the cover plate 100 when the screen is off.

[0084] In order to achieve the above-mentioned all-black hidden effect in the screen-off state, in some embodiments, as shown in Figures 6 to 9, a second part of the light-transmitting pattern 120 is also provided on the non-light-emitting side S2 of the cover plate 100. The orthographic projection of the second part of the light-transmitting pattern 120 on the cover plate 100 is located within the contour-defined area 111. The second part of the light-transmitting pattern 120 includes a plurality of opening areas 121 and a partial light-transmitting area 122 located between adjacent opening areas 121.

[0085] The above solution, by setting a second part of the light-transmitting pattern 120 within the outline-defined area 111, and setting the second part of the light-transmitting pattern 120 with multiple opening areas 121 and partial light-transmitting areas 122, with the opening areas 121 and partial light-transmitting areas 122 spaced apart, can reduce the light transmittance of the light-transmitting pattern area C, thus ensuring the hiding effect of luminous patterns such as characters or icons in the screen-off state, while meeting the brightness requirements of luminous patterns such as characters or icons in the normal display state.

[0086] In some embodiments, the main purpose of providing the second portion of the light-transmitting pattern 120 is to reduce the light transmittance of the light-transmitting pattern area C. The light transmittance of the second portion of the light-transmitting pattern 120 can be lower than that of the first portion of the light-transmitting and light-shielding layer 220. If the light transmittance of the second portion of the light-transmitting pattern 120 is too low, it will reduce the brightness of the characters or icons, requiring an increase in the brightness of the backlight 400, thus increasing costs. Therefore, in some embodiments, taking the provision of white light by the backlight 400 as an example, the light transmittance of the second portion of the light-transmitting pattern 120 can be 20±10%. However, it is not limited to this.

[0087] Furthermore, to ensure that luminous patterns such as characters, icons, or ambient lights are distinct from the surrounding light-shielding layer 110, the light transmittance of the light-shielding layer 110 may be less than the light transmittance of the overlapping area between the second part of the light-transmitting pattern 120 and the first part of the light-transmitting light-shielding layer 220. For example, the material of the second part of the light-transmitting pattern 120 may also include, but is not limited to, partially light-transmitting ink.

[0088] Furthermore, in some embodiments, as shown in Figures 6 to 9, both the opening area 121 and the partially translucent area 122 are stripe patterns, with the partially translucent area 122 and the opening area 121 arranged alternately. This allows luminous patterns such as characters, icons, or ambient lights to appear as stripes. However, it is understood that the patterns of the opening area 121 and the partially translucent area 122 are not limited to this. For example, the opening area 121 and the partially translucent area 122 can also form a mesh pattern, etc. Additionally, as shown in the figures, the stripe directions in the entire translucent pattern area C can be uniform; or, the entire translucent pattern area C can be divided into multiple sub-regions, where the extension directions of the stripe patterns in each sub-region can be the same or different. For example, the figure only shows a partial schematic diagram of the translucent pattern C. As shown in the figure, the translucent pattern area C includes a first sub-region C1 and a second sub-region C2, with different stripe directions in the first sub-region C1 and the second sub-region C2. The method of dividing the sub-regions is not limited.

[0089] In some embodiments, the second portion of the light-transmitting pattern 120 may be formed on the cover plate 100 by means of printing or other methods. It is understood that in some embodiments, for the design of luminous patterns (such as ambient lights) where the concealment effect is not considered, the second portion of the light-transmitting pattern 120 may not be added.

[0090] It should also be noted that, in this embodiment of the present disclosure, by separately setting a light-transmitting substrate and fabricating a first portion of the light-transmitting and light-shielding layer 220 on the light-transmitting substrate 210, the color diversity of the first portion of the light-transmitting and light-shielding layer 220 can also be achieved in terms of process. Specifically, for example, when the first portion of the light-transmitting and light-shielding layer 220 is made of ink material, the color diversity of luminous patterns such as characters, icons, or ambient lights can be achieved by adjusting the ink color.

[0091] In addition, in some embodiments, as shown in FIG1, the portion of the light-transmitting substrate 200 further includes an optical adhesive layer 500, and the portion of the light-transmitting substrate 200 is attached to the cover plate 100 through the optical adhesive layer 500.

[0092] This disclosure also includes an electronic device comprising a light source and a cover plate assembly provided in this disclosure. The light source is disposed on the non-light-emitting side S2 of the cover plate 100, and the light emitted from the light source is at least partially incident on a first portion of the light-transmitting pattern. Obviously, the electronic device provided in this disclosure also possesses the beneficial effects of the cover plate assembly provided in this disclosure, which will not be elaborated further here. For example, the electronic device may be a display device. This disclosure provides a display device that includes the cover plate assembly provided in this disclosure.

[0093] Furthermore, in some embodiments, as shown in FIG1, the display device further includes:

[0094] The display panel 300 has a display side and a backlight side disposed opposite to each other. A cover plate assembly is stacked on the display side of the display panel 300, and the cover plate 100 extends at least partially beyond the edge of the display panel 300. A partially light-transmitting substrate 200 is disposed in the area of ​​the cover plate 100 that extends beyond the edge of the display panel 300.

[0095] A backlight 400 is disposed on the backlight side of the display panel 300, and the backlight 400 serves as the light source, emitting at least a portion of the light that is incident on the first portion of the light-transmitting pattern 221.

[0096] In the above solution, since part of the light-transmitting substrate 200 is located in the area of ​​the cover plate 100 that extends beyond the edge of the display panel 300, the part of the light-transmitting substrate 200 will not have an adverse effect on the display screen. Moreover, the light from the backlight 400 can be used to provide light source for characters, icons, or ambient lights and other luminous patterns. Since the backlight 400 is a surface light source, it can improve the uniformity of brightness or the uniformity of gradient transition of characters, icons, or ambient lights and other luminous patterns.

[0097] In other embodiments, the non-light-emitting side S2 of the cover plate 100 may not have a display panel 300, but only a light source. For example, the light source may be a surface light source to improve the brightness uniformity of the light-emitting pattern or the uniformity of brightness gradient transition.

[0098] The following points need to be explained:

[0099] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0100] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present disclosure, i.e., these drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0101] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0102] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure shall be determined by the scope of the claims.

Claims

1. A cover plate assembly, characterized in that, include: A cover plate includes a first region having opposing light-emitting and non-light-emitting sides, wherein a light-shielding layer is provided on the non-light-emitting side, the light-shielding layer being located in the first region, and the light-shielding layer having a hollowed-out contour-defining area; and a partially light-transmitting substrate attached to the non-light-emitting side of the cover plate, the partially light-transmitting substrate including a light-transmitting base and a first partially light-transmitting light-shielding layer disposed on the light-transmitting base, the first partially light-transmitting light-shielding layer including a first partially light-transmitting pattern that allows some light to pass through, the orthographic projection of the first partially light-transmitting light-shielding layer on the cover plate being located in the first region, and the first partially light-transmitting pattern and the orthographic projection of the contour-defining area on the cover plate at least partially overlap, so that the overlapping area of ​​the contour-defining area and the first partially light-transmitting pattern forms a light-transmitting pattern area.

2. The cover plate assembly according to claim 1, characterized in that, The first portion of the light-transmitting pattern completely overlaps with the orthographic projection of the outline-defined area onto the cover plate.

3. The cover plate assembly according to claim 1, characterized in that, The light transmittance of at least a portion of the first part of the light-transmitting pattern gradually changes along a predetermined gradient direction.

4. The cover plate assembly according to claim 3, characterized in that, The predetermined gradient direction includes: a direction parallel to the light-transmitting substrate and pointing from the center of the first portion of the light-transmitting pattern to the edge of the first portion of the light-transmitting pattern; and / or a direction parallel to the light-transmitting substrate and pointing from one edge of the first portion of the light-transmitting pattern to the other edge of the first portion of the light-transmitting pattern.

5. The cover plate assembly according to claim 1, characterized in that, The light-transmitting substrate has a first surface facing the cover plate and a second surface facing away from the cover plate; wherein, the first portion of the light-transmitting and light-shielding layer is located on the first surface and / or the second surface, and at least one of the first surface and the second surface has diffused particles distributed on it.

6. The cover plate assembly according to claim 5, characterized in that, The first part of the light-transmitting and light-shielding layer is located on the first surface, and the diffused particles are distributed on at least the first surface.

7. The cover plate assembly according to claim 1, characterized in that, The light transmittance of the light-shielding layer is less than that of the first part of the light-transmitting pattern.

8. The cover plate assembly according to claim 1, characterized in that, The light transmittance of the first part of the translucent pattern is 1.5% to 2%.

9. The cover plate assembly according to claim 1, characterized in that, A second light-transmitting pattern is also provided on the non-light-emitting side of the cover plate. The orthographic projection of the second light-transmitting pattern on the cover plate is located within the contour-defined area. The second light-transmitting pattern includes multiple opening areas and partial light-transmitting areas located between adjacent opening areas.

10. The cover plate assembly according to claim 9, characterized in that, The light transmittance of the second part of the light-transmitting pattern is greater than that of the first part of the light-transmitting and light-shielding layer.

11. The cover plate assembly according to claim 9, characterized in that, The light transmittance of the light-shielding layer is less than the light transmittance of the overlapping area between the second part of the light-transmitting pattern and the first part of the light-transmitting light-shielding layer.

12. The cover plate assembly according to claim 9, characterized in that, Both the opening area and the partially translucent area are strip patterns, and the partially translucent area and the opening area are arranged alternately in sequence.

13. The cover plate assembly according to claim 1, characterized in that, The partially transparent substrate also includes an optical adhesive layer, and the partially transparent substrate is bonded to the cover plate through the optical adhesive layer.

14. An electronic device, characterized in that, include: light source; And, the cover plate assembly of any one of claims 1 to 13, wherein the light source is disposed on the non-light-emitting side of the cover plate, and the light emitted by the light source is at least partially incident on the first portion of the light-transmitting pattern.

15. The electronic device according to claim 14, characterized in that, The electronic device includes a display device.

16. The electronic device according to claim 15, characterized in that, The display device further includes: a display panel having a display side and a backlight side disposed opposite to each other, the cover plate assembly being stacked on the display side of the display panel, and the cover plate at least partially extending beyond the edge of the display panel, the partially light-transmitting substrate being disposed in the area of ​​the cover plate extending beyond the edge of the display panel; and a backlight source being disposed on the backlight side of the display panel, and the backlight source serving as the light source, emitting at least a portion of the light that is incident on the first partially light-transmitting pattern.

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