AMOLED display module with light sensing element

Abstract

The embodiment of the utility model belongs to the technical field of display modules. The utility model further relates to an AMOLED display module with the light sensing element, the AMOLED display module comprises an AMOLED display assembly and the light sensing element located on the back face of the AMOLED display assembly, the back face of the AMOLED display assembly is further provided with foam rubber, and the foam rubber is provided with a light sensing hole matched with the light sensing element. Therefore, the light sensing element can sense light on the back surface of the AMOLED display assembly through the light sensing hole. The light sensing element is arranged on the back face of the AMOLED display assembly, the light sensing hole matched with the light sensing element is formed in the foam rubber, the light sensing element can be attached to the back face of the AMOLED display assembly for light sensing, the design avoids increasing the black edge width of the cover plate and the machine shell, and the narrow frame of the display module is achieved.

Description

Technical Field

[0001] This utility model relates to the field of display module technology, and more specifically, to an AMOLED display module with a light-sensing element. Background Technology

[0002] AMOLED (Active Matrix Organic Light Emitting Diode) display technology, with its vibrant display effects, high contrast, rich colors, and thin and flexible screen characteristics, has been widely used in smart wearable devices such as smartwatches in recent years.

[0003] However, while pursuing aesthetic design and practical functionality in smartwatches, a key technical issue has gradually emerged: to ensure that smartwatches can automatically adjust brightness in outdoor environments to achieve energy savings, a light sensor must be installed on the watch. Traditional smartwatch designs typically place the light sensor on the cover or casing, requiring pre-drilled holes and space for it. While this ensures the light sensor functions properly, it inevitably increases the width of the bezel on the cover and casing. Since the light sensor is 1mm x 1mm, this means the bezel width must increase by at least 1mm. For smartwatches aiming for ultimate aesthetics, this increased bezel not only affects the overall appearance of AMOLED smartwatches but also limits designers' creative freedom, hindering the further promotion and widespread adoption of AMOLED smartwatches. Therefore, we propose an improvement: an AMOLED display module with an integrated light sensor. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is that when the light sensor is placed on the cover plate or watch case, a light-transmitting hole and space need to be reserved on the cover plate or case, which increases the black edge of the cover plate or case.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An AMOLED display module with a light-sensing element includes: an AMOLED display component and a light-sensing element located on the back of the AMOLED display component. A foam adhesive is also disposed on the back of the AMOLED display component, and a photosensitive hole matching the light-sensing element is formed on the foam adhesive, allowing the light-sensing element to sense light on the back of the AMOLED display component through the photosensitive hole. This application, by placing the light-sensing element on the back of the AMOLED display component and forming a photosensitive hole matching the light-sensing element on the foam adhesive, allows the light-sensing element to adhere to the back of the AMOLED display component for light sensing. This design avoids increasing the width of the black border of the cover plate and casing, facilitating a narrow bezel in the display module.

[0007] As an improvement of this utility model, the AMOLED display component includes an AMOLED screen glass, which is connected to one side of the foam adhesive.

[0008] As an improvement of this utility model, the AMOLED display component further includes a cover plate body, which is located on the side of the AMOLED screen glass away from the foam adhesive.

[0009] As an improvement of this utility model, OCA adhesive is used to connect the AMOLED screen glass and the cover plate body.

[0010] As an improvement of this utility model, the AMOLED screen glass is connected to the main screen FPC.

[0011] As an improvement of this utility model, the main screen FPC is provided with a component area and an electromagnetic shielding layer is provided on the main screen FPC, and the electromagnetic shielding layer covers the component area.

[0012] As an improvement of this utility model, the AMOLED screen glass has pads for connecting the main screen FPC, and a transparent conductive layer is connected between the pads and the photosensitive element.

[0013] As an improvement of this utility model, the transparent conductive layer is made of indium zinc oxide and is used to connect the photosensitive element and the main screen FPC.

[0014] As an improvement of this utility model, the outer surface of the cover plate body is provided with a protective coating.

[0015] As an improvement of this utility model, the protective coating is an AF coating, an AR coating, or an AG coating.

[0016] Compared with the prior art, the embodiments of this utility model have the following main advantages:

[0017] To address the issue in existing technologies where the photosensitive element is placed on the cover plate or watch case, requiring the reservation of light-transmitting holes and space on the cover plate or case, thus increasing the black border of the cover plate or case, this application addresses this problem by placing the photosensitive element on the back of the AMOLED display module and creating a photosensitive hole on the foam adhesive that matches the photosensitive element. This allows the photosensitive element to be attached to the back of the AMOLED display module for light sensing. This design avoids increasing the width of the black border of the cover plate and case, facilitating the achievement of a narrow bezel in the display module. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of an AMOLED display module with a photosensitive element provided in this application;

[0019] Figure 2 A partial structural schematic diagram of an AMOLED display module with a photosensitive element provided in this application;

[0020] Figure 3 A schematic diagram of the photosensitive hole structure of an AMOLED display module with a photosensitive element provided in this application;

[0021] Figure 4 A schematic diagram of the black stripe provided for this application.

[0022] The image shows:

[0023] 1. AMOLED display component; 101. AMOLED screen glass; 102. OCA adhesive; 103. Cover plate body; 2. Foam adhesive; 3. Photosensitive hole. Detailed Implementation

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The reference herein to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] As described in the background art, in order to ensure that smartwatches can automatically adjust their brightness in outdoor environments to achieve energy saving, a light sensor must be installed on the watch. Traditional smartwatch designs usually place the light sensor on the cover or case, and require reserving light-transmitting holes and space for the light sensor. Although this approach can ensure that the light sensor works properly, it will inevitably increase the width of the black border of the cover and case.

[0026] To solve this technical problem, this utility model provides an AMOLED display module with a light-sensing element.

[0027] For details, please refer to Figures 1-3 AMOLED display modules with light sensors specifically include:

[0028] AMOLED display module 1 and a light-sensing element located on the back of AMOLED display module 1. A foam adhesive 2 is also provided on the back of AMOLED display module 1, and a photosensitive hole 3 matching the light-sensing element is opened on the foam adhesive 2 so that the light-sensing element can be photosensitive on the back of AMOLED display module 1 through the photosensitive hole 3.

[0029] The AMOLED display module with a light-sensing element provided by this utility model is designed to place the light-sensing element on the back of the AMOLED display assembly 1 and open a photosensitive hole 3 on the foam adhesive 2 that matches the light-sensing element, so that the light-sensing element can be attached to the back of the AMOLED display assembly 1 for light sensing. This design avoids increasing the width of the black border of the cover plate and the casing, and is conducive to achieving a narrow bezel in the display module.

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] Embodiment 1 of the AMOLED display module with light-sensing element of this utility model

[0034] Please refer to Figures 1-3 The present invention relates to an AMOLED display module with a light-sensing element, comprising: an AMOLED display component 1 and a light-sensing element located on the back of the AMOLED display component 1. A foam adhesive 2 is also provided on the back of the AMOLED display component 1, and a photosensitive hole 3 matching the light-sensing element is formed on the foam adhesive 2, so that the light-sensing element can be photosensitive on the back of the AMOLED display component 1 through the photosensitive hole 3. By setting the light-sensing element on the back of the AMOLED display component 1 and forming a photosensitive hole 3 matching the light-sensing element on the foam adhesive 2, the light-sensing element can be attached to the back of the AMOLED display component 1 for photosensitive purposes. This design avoids increasing the width of the black border of the cover plate and the casing, and facilitates the display module to achieve a narrow bezel.

[0035] Furthermore, such as Figure 2As shown, the AMOLED display assembly 1 includes an AMOLED screen glass 101, which is connected to one side of the foam adhesive 2. As one of the core components of the AMOLED display assembly 1, the AMOLED screen glass 101 is connected to the foam adhesive 102, thus creating a stable mounting foundation for the light sensing element.

[0036] Furthermore, such as Figure 2 As shown, the AMOLED display assembly 1 also includes a cover plate body 103, which is located on the side of the AMOLED screen glass 101 away from the foam adhesive 2. The AMOLED screen glass 101 is a relatively fragile component that is easily damaged by the external environment. In actual use, it may face physical damage such as scratches and collisions. The cover plate body 103 can effectively protect the AMOLED screen glass 101 and reduce the direct damage to the AMOLED screen glass 101. Through this protective function, the service life of the AMOLED screen glass 101 is significantly extended.

[0037] Furthermore, such as Figure 2 As shown, OCA adhesive 102 connects the AMOLED screen glass 101 and the cover plate body 103. OCA adhesive 102 is an optical adhesive, a special adhesive used to bond transparent optical components. It belongs to the category of pressure-sensitive adhesives. OCA optical adhesive has extremely high transparency, which can ensure that the bonded optical components do not produce obvious color difference or obstruction. Its light transmittance is extremely high, generally required to be above 90%, which ensures that the optical components can still maintain good optical performance after bonding. After curing, OCA optical adhesive can form a stable adhesive layer, ensuring that the bonded optical components are not easy to fall off during use. OCA optical adhesive can be cured at room temperature or medium temperature, and the curing shrinkage is small, which is beneficial to maintaining the flatness and optical performance of the bonding surface.

[0038] Embodiment 2 of the AMOLED display module with light-sensing element of this utility model

[0039] Furthermore, in this invention, the AMOLED display module with a light-sensing element is further provided with an AMOLED screen glass 101 connected to a main screen FPC. The main screen FPC is used to connect to the motherboard to receive control signals and power supply from the motherboard. As a flexible electrical connection component, the FPC has advantages such as being thin, light, and flexible, and can easily connect the AMOLED screen glass 101 to external circuits.

[0040] Furthermore, the main screen FPC has a component area and an electromagnetic shielding layer covering the component area. The electromagnetic shielding layer is made of copper foil. The component area on the main screen FPC contains many important electronic components. These components generate and receive electromagnetic signals during operation. At the same time, they are also susceptible to external electromagnetic interference. The electromagnetic shielding layer can block external electromagnetic interference from entering the component area and prevent the electromagnetic interference generated by the components from leaking out, reducing the impact on other components and equipment. Through this shielding effect, the components can work in a relatively stable electromagnetic environment, reducing failures and errors caused by electromagnetic interference and improving the reliability and stability of the display module.

[0041] Furthermore, the AMOLED screen glass 101 has pads for connecting to the main screen FPC, and a transparent conductive layer connects the pads to the photosensitive element. The main function of the photosensitive element is to collect external light data and transmit this data to other circuits for processing. To achieve this function, an effective electrical connection needs to be established between the photosensitive element and the main screen FPC. The pads on the AMOLED screen glass 101 provide a reliable interface for connecting to the main screen FPC, while the transparent conductive layer bridges the gap between the pads and the photosensitive element. The transparent conductive layer has both good conductivity to ensure smooth transmission of electrical signals and high light transmittance to avoid affecting the light transmittance of the AMOLED display component 1.

[0042] Furthermore, the transparent conductive layer is made of indium zinc oxide. The transparent conductive layer is used to connect the photosensitive element and the main screen FPC. As an excellent transparent conductive material, indium zinc oxide has good conductivity and light transmittance. It can achieve electrical connection between the photosensitive element and the main screen FPC while allowing light to pass through smoothly without affecting the light transmittance of the AMOLED display component 1. The good conductivity ensures that the data collected by the photosensitive element can be transmitted to the main screen FPC stably and accurately, while the high light transmittance ensures that the display effect of the display module is not affected.

[0043] Embodiment 3 of the AMOLED display module with light-sensing element of this utility model

[0044] Furthermore, in the AMOLED display module with light-sensing element of this utility model, a protective coating is provided on the outer surface of the cover plate body 103, which greatly improves the protective performance of the cover plate body 103.

[0045] Furthermore, the protective coating is an AF coating, an AR coating, or an AG coating;

[0046] AF coating, or anti-fingerprint coating, is mainly used to prevent fingerprints and oil stains from remaining, making the surface easier to clean. This coating effectively solves the problem of fingerprints easily remaining on materials such as glass, ceramics, and metals. AF coating is a fluorinated coating with extremely low surface tension, often referred to as perfluoropolyether. It can adhere to the surface of materials, increasing the hydrophobic, oil-repellent, and anti-fouling properties of the materials.

[0047] AR coating, or anti-reflective coating, is a dielectric thin film coating applied to optical surfaces. It is designed to reduce the reflectivity of light within a specific wavelength range caused by Fresnel reflection on the surface, thereby improving light transmittance and image clarity.

[0048] AG coating, or anti-glare coating, is mainly used to reduce the specular reflection of glass or plastic film. It has excellent anti-glare effect and helps to reduce eye discomfort and visual fatigue.

[0049] Since the AMOLED screen glass 101 is in use when the light sensor collects ambient light, the light collected by the light sensor is divided into ambient light and light emitted by the AMOLED screen glass 101 itself. Therefore, only by removing the light emitted by the AMOLED screen glass 101 can the ambient light be correctly obtained. If the AMOLED screen glass 101 above the light sensor displays a black screen when the light sensor is collecting data, this will not affect the data collected by the light sensor from the ambient light.

[0050] As is known, AMOLED displays refresh the screen from top to bottom at a frequency of 60Hz, or 16.7ms. If we divide this 16.7ms into 10 equal parts, and display a black band based on the duration of one of these parts, we get a black band (i.e., as shown in the image) that appears simultaneously with the 16.7ms display. Figure 4 As shown in the label at point A, the continuous refresh from top to bottom, due to the persistence of vision, makes it difficult for the naked eye to detect the black bands while viewing, thus not affecting the display effect.

[0051] The photosensitive element can continuously collect data, with a collection time of 2 seconds, which means obtaining 100 sets of photosensitive element data. Then, through the integration calculation inside the motherboard IC (integration calculation is existing technology and will not be described in detail in this application), the minimum 5 sets of collected light values ​​are obtained. The average value of these 5 sets is then sent to the motherboard IC to inform it of the light value. The minimum value here is the external light data under the black screen of AMOLED screen glass 101, so as to realize the correction of the photosensitive element detection data.

[0052] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1.A kind of AMOLED display module with light sensing element, characterized by, include: The AMOLED display assembly (1) and the photosensitive element located on the back of the AMOLED display assembly (1) are provided with a foam adhesive (2) on the back of the AMOLED display assembly (1), and a photosensitive hole (3) matching the photosensitive element is opened on the foam adhesive (2) so that the photosensitive element can be photosensitive on the back of the AMOLED display assembly (1) through the photosensitive hole (3). 2.The AMOLED display module with a light sensing element of claim 1, wherein, The AMOLED display component (1) includes an AMOLED screen glass (101) which is connected to one side of the foam adhesive (2). 3.The AMOLED display module with light sensing element of claim 2, wherein, The AMOLED display assembly (1) also includes a cover plate body (103), which is located on the side of the AMOLED screen glass (101) away from the foam adhesive (2). 4.The AMOLED display module with a light sensing element of claim 3, wherein, The AMOLED screen glass (101) and the cover plate body (103) are connected by OCA adhesive (102). 5.The AMOLED display module with light sensing element according to any one of claims 2-4, characterized in that, The AMOLED screen glass (101) is connected to the main screen FPC. 6.The AMOLED display module with light sensing element of claim 5, wherein, The main screen FPC has a component area and an electromagnetic shielding layer that covers the component area. 7.The AMOLED display module with light sensing element of claim 6, wherein, The AMOLED screen glass (101) has pads for connecting the main screen FPC, and a transparent conductive layer is connected between the pads and the photosensitive element. 8.The AMOLED display module with light sensing element of claim 7, wherein, The transparent conductive layer is made of indium zinc oxide and is used to connect the photosensitive element to the main screen FPC. 9.The AMOLED display module with light sensing element of claim 3, wherein, The outer surface of the cover plate body (103) is provided with a protective coating. 10.The AMOLED display module with light sensing element of claim 9, wherein, The protective coating is an AF coating, an AR coating, or an AG coating.

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