Full-laminated structure for display screen and liquid crystal display screen

Abstract

This utility model relates to the field of display screen technology and discloses a fully laminated structure for a display screen, including a protective glass, a touch-sensing layer, and a display panel substrate. A bend-resistant composite OCA optical adhesive is disposed between the protective glass and the touch-sensing layer, and an electromagnetic shielding layer is disposed between the touch-sensing layer and the display panel substrate. By distributing the bend-resistant composite OCA optical adhesive between the protective glass and the touch-sensing layer—an adhesive composed of a scratch-resistant polyurethane layer, a dynamically cross-linked polyimide elastic layer, and a silane coupling agent adhesive layer, with each layer sequentially distributed—the bend resistance of the display screen is effectively enhanced, reducing structural damage caused by external forces and improving the overall structural stability and durability. The electromagnetic shielding layer between the touch-sensing layer and the display panel substrate effectively shields against external electromagnetic interference, ensuring stable transmission of touch signals, improving the accuracy and sensitivity of touch operations, and providing users with a smoother interactive experience.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, specifically to a fully laminated structure for display screens and a liquid crystal display screen. Background Technology

[0002] In the current field of display technology, as consumers' demands for the display effects and interactive experience of electronic products continue to increase, the performance and reliability of displays have become key factors. Traditional display structures are gradually showing their limitations in dealing with complex usage environments and improving user experience.

[0003] In traditional displays, the bonding material between the protective glass and the touch-sensing layer often lacks sufficient bending resistance. This can lead to problems such as cracking and detachment of the bonding layer when the display is frequently touched or subjected to external bending forces, affecting the normal use and lifespan of the display. Existing bonding materials are also insufficient in terms of adhesive strength and durability, and are prone to aging and discoloration after long-term use, reducing the light transmittance and display effect of the display. Furthermore, traditional structures often lack an effective electromagnetic shielding layer between the touch-sensing layer and the display panel substrate, making it easy for external electromagnetic interference to affect the signal transmission inside the display, resulting in problems such as unresponsive touch and abnormal display. Utility Model Content

[0004] The purpose of this invention is to provide a fully laminated structure for a display screen and a liquid crystal display screen to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fully laminated structure for a display screen, comprising a protective glass, a touch sensing layer, and a display panel substrate, wherein an anti-bending composite OCA optical adhesive is disposed between the protective glass and the touch sensing layer, and an electromagnetic shielding layer is disposed between the touch sensing layer and the display panel substrate.

[0006] Preferably, the protective glass, the touch sensing layer, and the display panel layer are arranged sequentially from top to bottom.

[0007] Preferably, the protective glass and the touch-sensing layer are seamlessly bonded together using an anti-bending composite OCA optical adhesive.

[0008] Preferably, the anti-bending composite OCA optical adhesive comprises a scratch-resistant polyurethane layer, a dynamically cross-linked polyimide elastic layer, and a silane coupling agent adhesive layer, and is distributed sequentially from the side closest to the protective glass to the side of the touch sensing layer.

[0009] Preferably, a fully laminated structure for a display screen further includes a backlight module, a liquid crystal display panel, an upper polarizer, a lower polarizer, and a touch component, characterized in that: a waterproof and sealed frame is fixedly connected to the surface of the liquid crystal display panel.

[0010] Preferably, the backlight module is located at the bottom layer and is used to provide a light source, while the liquid crystal display panel is located above the backlight module and is used to display images.

[0011] Preferably, the upper polarizer and the lower polarizer are located on the upper and lower sides of the liquid crystal display panel, respectively, to adjust the polarization direction of light, and the touch component is placed on the top layer to realize human-computer interaction.

[0012] Compared with the prior art, the present invention provides a fully laminated structure for a display screen and a liquid crystal display screen, which has the following beneficial effects: 1. This display screen utilizes a fully laminated structure and an LCD display. By applying an anti-bending composite OCA optical adhesive between the protective glass and the touch-sensing layer, this adhesive, composed of a scratch-resistant polyurethane layer, a dynamically cross-linked polyimide elastic layer, and a silane coupling agent adhesive layer, effectively enhances the display screen's resistance to bending, reduces structural damage caused by external forces, and improves the overall structural stability and durability. An electromagnetic shielding layer between the touch-sensing layer and the display panel substrate effectively shields against external electromagnetic interference, ensuring stable transmission of touch signals, improving the accuracy and sensitivity of touch operations, and providing users with a smoother interactive experience.

[0013] 2. This display screen uses a fully laminated structure and an LCD screen. A waterproof, sealed frame, fixed to the surface of the LCD panel, effectively prevents the intrusion of moisture and dust, protecting internal electronic components from damage and extending the screen's lifespan. It is particularly suitable for humid or dusty environments. The backlight module provides a stable and uniform light source, which, combined with the high-precision display of the LCD panel and the precise adjustment of the light polarization direction by the upper and lower polarizers, achieves high-quality image display with accurate color reproduction and high contrast, bringing users a visual enjoyment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the scratch-resistant polyurethane layer and the dynamically cross-linked polyimide elastic layer of this utility model. Figure 3 This is a three-dimensional schematic diagram of the backlight module and liquid crystal display panel of this utility model; Figure 4This is a three-dimensional schematic diagram of the waterproof sealing frame structure of this utility model.

[0015] In the diagram: 1. Protective glass; 2. Bending-resistant composite OCA optical adhesive; 21. Scratch-resistant polyurethane layer; 22. Dynamically cross-linked polyimide elastic layer; 23. Silane coupling agent adhesive layer; 3. Touch sensing layer; 4. Electromagnetic shielding layer; 5. Display panel substrate; 6. Backlight module; 7. Lower polarizer; 8. Liquid crystal display panel; 9. Upper polarizer; 10. Touch assembly; 11. Waterproof sealed frame. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] This utility model provides the following technical solution: Example 1 Please see Figure 1-2 This utility model provides a technical solution: a fully laminated structure for a display screen, including a protective glass 1, a touch sensing layer 3 and a display panel substrate 5, wherein an anti-bending composite OCA optical adhesive 2 is provided between the protective glass 1 and the touch sensing layer 3, and an electromagnetic shielding layer 4 is provided between the touch sensing layer 3 and the display panel substrate 5.

[0019] The protective glass 1, the touch sensing layer 3, and the display panel layer are arranged from top to bottom.

[0020] The protective glass 1 and the touch sensing layer 3 are seamlessly bonded together by the anti-bending composite OCA optical adhesive 2.

[0021] The anti-bending composite OCA optical adhesive 2 includes a scratch-resistant polyurethane layer 21, a dynamically cross-linked polyimide elastic layer 22, and a silane coupling agent adhesive layer 23, which are distributed sequentially from the side closest to the protective glass 1 to the side of the touch sensing layer 3.

[0022] Example 2 Please see Figure 3-4 Based on Embodiment 1, a backlight module 6, a liquid crystal display panel 8, an upper polarizer 9, a lower polarizer 7, and a touch panel 10 are further obtained.

[0023] A waterproof and sealed frame 11 is fixedly connected to the surface of the LCD panel 8.

[0024] The backlight module 6 is located at the bottom and is used to provide a light source. The LCD panel 8 is located above the backlight module 6 and is used to display images.

[0025] The upper polarizer 9 and the lower polarizer 7 are located on the upper and lower sides of the liquid crystal display panel 8, respectively, to adjust the polarization direction of light. The touch panel 10 is placed on the top layer to realize human-computer interaction.

[0026] In actual operation, when this device is in use, the protective glass 1 and the touch sensing layer 3 are seamlessly bonded together using an anti-bending composite OCA optical adhesive 2. This optical adhesive consists of three layers: a scratch-resistant polyurethane layer 21, a dynamically cross-linked polyimide elastic layer 22, and a silane coupling agent adhesive layer 23. The scratch-resistant polyurethane layer 21 provides surface scratch resistance, protecting the screen from daily wear and tear. The dynamically cross-linked polyimide elastic layer 22 gives the optical adhesive good elasticity and bending resistance, ensuring a stable bond even when the screen is bent or subjected to pressure. The silane coupling agent adhesive layer 23 enhances the adhesion between the optical adhesive and the protective glass 1 and the touch sensing layer 3, ensuring the stability of the seamless bond. An electromagnetic shielding layer 4 is provided between the touch sensing layer 3 and the display panel substrate 5. This layer effectively shields external electromagnetic interference, preventing electromagnetic waves from interfering with touch and display signals, ensuring the accuracy of touch operation and the stability of the displayed image. The backlight module 6 is located at the bottom of the display screen and is responsible for providing a uniform light source. It is typically composed of LED chips, a light guide plate, and a reflector. The light guide plate converts point light sources into surface light sources, providing stable and uniform backlight for the liquid crystal display panel 8. The liquid crystal display panel 8 is located above the backlight module 6 and is the core component for displaying images. It is composed of multiple thin films, including a liquid crystal layer, a transparent electrode layer, and a color filter. Under the action of an electric field, the liquid crystal molecules undergo directional changes, thereby controlling the transmittance of light and realizing the display of images. The upper polarizer 9 and the lower polarizer 7 are located on the upper and lower sides of the liquid crystal display panel 8, respectively. The lower polarizer 7 converts the unpolarized light emitted by the backlight module 6 into polarized light. The liquid crystal layer adjusts the polarization according to the electric field signal. The direction of polarized light is adjusted, and the upper polarizer 9 further adjusts the polarization direction of the emitted light to ensure that only light from a specific direction can pass through to form a clear image. The touch group 10 is placed on the top layer of the liquid crystal display panel 8 and is responsible for receiving the user's touch operation. When the user's finger or stylus touches the screen, the touch sensing layer 3 will detect the change in capacitance or resistance and transmit the signal to the processor for analysis, thereby realizing the recognition and execution of operation commands such as click and swipe. A waterproof sealing frame 11 is fixedly connected to the surface of the liquid crystal display panel 8. This frame can effectively prevent moisture and dust from entering the interior of the liquid crystal display panel 8, protect the liquid crystal display panel 8 and the touch sensing layer 3 and other key components from damage, and extend the service life of the display screen.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A fully laminated structure for a display screen, comprising a protective glass (1), a touch sensing layer (3), and a display panel substrate (5), characterized in that: An anti-bending composite OCA optical adhesive (2) is provided between the protective glass (1) and the touch sensing layer (3), and an electromagnetic shielding layer (4) is provided between the touch sensing layer (3) and the display panel substrate (5).

2. The fully laminated structure for a display screen according to claim 1, characterized in that: The protective glass (1), the touch sensing layer (3), and the display panel layer are arranged from top to bottom.

3. The fully laminated structure for a display screen according to claim 1, characterized in that: The protective glass (1) and the touch sensing layer (3) are seamlessly bonded together by an anti-bending composite OCA optical adhesive (2).

4. The fully laminated structure for a display screen according to claim 1, characterized in that: The anti-bending composite OCA optical adhesive includes (2) a scratch-resistant polyurethane layer (21), a dynamically cross-linked polyimide elastic layer (22), and a silane coupling agent adhesive layer (23), which are distributed sequentially from the side near the protective glass (1) to the side of the touch sensing layer (3).

5. A liquid crystal display screen, comprising the fully laminated structure for a display screen as described in any one of claims 1-4, characterized in that, It also includes a backlight module (6), a liquid crystal display panel (8), an upper polarizer (9), a lower polarizer (7), and a touch panel (10), characterized in that: a waterproof and sealed frame (11) is fixedly connected to the surface of the liquid crystal display panel (8).

6. A liquid crystal display screen according to claim 5, characterized in that: The backlight module (6) is located at the bottom layer, and the liquid crystal display panel (8) is located on top of the backlight module (6).

7. A liquid crystal display screen according to claim 5, characterized in that: The upper polarizer (9) and lower polarizer (7) are located on the upper and lower sides of the liquid crystal display panel (8) respectively, and are used to adjust the polarization direction of light. The touch panel (10) is placed on the top layer to realize human-computer interaction.

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