QD diffusion plate with screen sealing glue and display module

Abstract

The utility model relates to the technical field of display modules, in particular to a QD diffusion plate with screen sealing glue and a display module. The display module comprises a back plate, a backlight layer, a color filter, a brightness enhancement film, a first polaroid, a second polaroid, a liquid crystal module, a screen sealing rubber frame, a packaging outer frame and a hardened glass layer, the backlight layer is connected to the inner side of the back plate, the backlight layer and the back plate are tightly attached, the color filter is arranged in the back plate and is next to the backlight layer, and the brightness enhancement film is arranged on the back plate. The brightness enhancement film is attached to the front side of the color filter. Through the design of screen sealing adhesive tapes at the four vertex angles of the backlight layer and L-shaped screen sealing adhesives at the vertex angles of the diffusion sheet, the color filter, the brightness enhancement film and the first polaroid, gaps between elements of all layers can be filled, dust, water vapor and other impurities are prevented from entering the display module, the influence of impurity invasion on the display effect and the service life of an assembly is avoided, and the display quality is improved. And the service life of the display module is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to display module technical field especially, relate to a kind of QD diffusion plate with sealing screen glue and display module. BACKGROUND

[0002] In the development process of display module, with the continuous progress of display technology, the performance and reliability of display module are increasingly improved. Display module is usually composed of multiple levels of optical and electronic components, such as backlight layer, diffusion sheet, color filter, liquid crystal module, etc. These components work together to achieve image display function.

[0003] However, in practical application, the optical and electronic components inside the display module have strict requirements on the working environment and are easily affected by external environmental factors. For example, water vapor and dust are two major factors that seriously affect the performance and life of the display module. Once water vapor enters the display module, it may cause corrosion of optical components, short circuit or performance degradation of electrical components, while dust particles may interfere with the propagation path of light, reducing the clarity of the display. Traditional display module sealing technology mainly uses simple shell packaging to simply wrap multiple components in a whole shell. However, due to the existence of small gaps between the components in the display module, the shell alone cannot completely prevent water vapor and dust from entering the interior through these gaps, and there are often unavoidable small gaps.

[0004] Therefore, in order to ensure the long-term stable operation and good performance of the display module, a QD diffusion plate with sealing screen glue and display module is designed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to overcome the above-mentioned shortcomings, the technical problem of the utility model is to provide a QD diffusion plate with sealing screen glue and display module.

[0006] The technical scheme is as follows: a QD diffusion plate with sealing screen glue and display module.

[0007] In the first aspect, the utility model provides a display module, which adopts the following technical scheme:

[0008] The display module comprises a back plate, a backlight layer, a color filter, a brightness enhancement film, a first polaroid, a second polaroid, a liquid crystal module, a sealing glue frame, a sealing outer frame and a hardened glass layer, the backlight layer is connected to the inner side of the back plate, the two are closely attached, the color filter is arranged on the inside of the back plate next to the backlight layer, the brightness enhancement film is attached to the front side of the color filter, the first polaroid, the liquid crystal module and the second polaroid are arranged in sequence to form a sandwich structure, and are closely attached to adjacent components, the sealing glue frame is installed at the groove on the front side of the back plate, the sealing outer frame is connected to the outer side of the second polaroid and is bonded with the sealing glue frame, and the hardened glass layer is located at the outermost layer of the display module and is directly bonded with the front side of the sealing outer frame.

[0009] Further, the display module further comprises limiting knobs, the sealing outer frame is provided with two limiting knobs on the upper side and the lower side and one limiting knob on each of the left side and the right side, and the back plate is provided with corresponding limiting grooves at the corresponding positions, when the sealing outer frame is sealed on the back plate, the limiting knobs are inserted into the corresponding limiting grooves to limit the position of the sealing outer frame.

[0010] Further, the first polaroid and the second polaroid have a certain flexibility and can be attached to the liquid crystal module.

[0011] Further, the backlight layer adopts LED light sources as light emitting elements, and the LED light sources are uniformly distributed on the inner side of the back plate.

[0012] In the second aspect, the utility model provides a QD diffusion plate with sealing glue, the QD diffusion plate with sealing glue is installed in a display module, and the technical scheme is as follows:

[0013] A QD diffusion plate with sealing glue, comprising a diffusion sheet, a sealing glue strip and L-shaped sealing glue, the diffusion sheet is connected between the backlight layer and the color filter, the backlight layer is provided with the sealing glue strip at four top corners, and the L-shaped sealing glue is provided at four top corners of the diffusion sheet, the color filter, the brightness enhancement film and the first polaroid, when these components are connected in layers, the L-shaped sealing glue is bonded with the sealing glue strip to fill the gaps between the elements.

[0014] Further, the QD diffusion plate with sealing glue further comprises a protruding rod, the backlight layer is symmetrically connected with the protruding rod upward and downward at the left end and the right end, and the diffusion sheet, the color filter, the brightness enhancement film and the first polaroid are provided with through holes at the corresponding positions, and the protruding rod is inserted into the through hole in a matched mode.

[0015] Further, the surface of the diffusion sheet is frosted to achieve better light scattering effect.

[0016] Further, the L-shaped sealing glue and the sealing glue strip are made of materials with excellent adhesion and weather resistance.

[0017] The utility model has the following advantages:

[0018] 1. By the sealing adhesive tape at the four top corners of the backlight layer and the diffusion plate, color filter, brightness enhancement film and L-shaped sealing adhesive at the top corners of the first polarizing plate, the gaps between the layers of elements can be filled, preventing dust, moisture and other impurities from entering the display module, avoiding the influence of impurities on the display effect and the service life of the assembly, prolonging the service life of the display module.

[0019] 2. The design of the protruding rod and the corresponding through hole, as well as the limiting slot and the limiting tab, can ensure accurate positioning of the layers of elements and accurate fixing position of the packaging frame during assembly, avoiding positional deviation during assembly, improving assembly accuracy and production efficiency, and ensuring the relative position stability of the components during long-term use, reducing the risk of display abnormalities caused by component misalignment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model.

[0021] Figure 2 is a schematic diagram of the disassembly of the components of the utility model.

[0022] Figure 3 is Figure 2 is an enlarged schematic view of position A in the middle.

[0023] The meanings of the reference numerals in the drawings are as follows: 1: back plate, 2: backlight layer, 3: diffusion plate, 4: color filter, 5: brightness enhancement film, 6: first polarizing plate, 61: second polarizing plate, 7: liquid crystal module, 8: sealing adhesive frame, 9: packaging frame, 10: hardened glass layer, 11: protruding rod, 12: through hole, 13: sealing adhesive tape, 14: L-shaped sealing adhesive, 15: limiting slot, 16: limiting tab. DETAILED DESCRIPTION

[0024] The above-mentioned scheme will be further described in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the present application and do not limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not specified are usually the conditions in the conventional experiments.

[0025] Embodiment: The embodiment discloses a display module, which comprises a back plate, a backlight layer, a diffusion plate, a color filter, a brightness enhancement film, a first polarizing plate, a second polarizing plate, a liquid crystal module, a sealing adhesive frame, a packaging frame, a hardened glass layer, a protruding rod, a through hole, a sealing adhesive tape, an L-shaped sealing adhesive, a limiting slot and a limiting tab. Figures 1-2As shown, the display module comprises a back plate 1, a backlight layer 2, a color filter 4, a brightness enhancement film 5, a first polarizer 6, a second polarizer 61, a liquid crystal module 7, a sealing frame 8, an encapsulation frame 9 and a hardened glass layer 10. The back plate 1 is a basic support structure of the entire display module, which can provide stable structural support for the display module. The backlight layer 2 is connected to the inner side of the back plate 1 by bonding. The backlight layer 2 uses LED light source as light emitting element, which is uniformly distributed on the inner side of the back plate 1. The two are closely attached to ensure that the display screen can emit light uniformly. The color filter 4 is arranged inside the back plate 1 next to the backlight layer 2, which is used to convert light into color image to realize color display function. The brightness enhancement film 5 is attached to the front side of the color filter 4, which is used to improve the brightness and contrast of the display screen. The first polarizer 6, the liquid crystal module 7 and the second polarizer 61 are arranged in turn to form a sandwich structure, and are closely attached to the adjacent components. The first polarizer 6 and the second polarizer 61 have a certain flexibility, which can be attached to the liquid crystal module 7. The first polarizer 6 and the second polarizer 61 contain a plurality of small polarization units inside, which are arranged in the same direction to realize the polarization function of light. The sealing frame 8 is installed at the groove on the front side of the back plate 1. The encapsulation frame 9 is connected to the outer side of the second polarizer 61 and is bonded with the sealing frame 8. The hardened glass layer 10 is located at the outermost layer of the display module and is directly bonded with the front side of the encapsulation frame 9.

[0026] As shown in Figure 2 , the display module further comprises a limiting tab 16. There are two limiting tabs 16 on the upper and lower sides of the encapsulation frame 9, and one limiting tab 16 on each of the left and right sides. Corresponding limiting grooves 15 are provided on the back plate 1 at the corresponding positions. When the encapsulation frame 9 is encapsulated on the back plate 1, the limiting tab 16 is inserted into the corresponding limiting groove 15 to limit the position of the encapsulation frame 9.

[0027] The embodiment also discloses a QD diffusion plate with sealing glue, which is installed in a display module, as shown in Figures 2-3 , the QD diffusion plate with sealing glue comprises a diffusion sheet 3, a sealing glue strip 13 and an L-shaped sealing glue 14. The diffusion sheet 3 is connected between the backlight layer 2 and the color filter 4, which is used to uniformly diffuse the light emitted by the backlight layer 2 to the entire display area. The surface of the diffusion sheet 3 is frosted to achieve better light scattering effect. The backlight layer 2 is provided with the sealing glue strip 13 at the four corners. The L-shaped sealing glue 14 is provided at the four corners of the diffusion sheet 3, the color filter 4, the brightness enhancement film 5 and the first polarizer 6. When these components are connected in layers, the L-shaped sealing glue 14 is bonded with the sealing glue strip 13 to fill the gaps between the elements and provide sealing protection. The L-shaped sealing glue 14 and the sealing glue strip 13 are made of materials with excellent adhesion and weather resistance, which can maintain good sealing performance for a long time under different environmental conditions, preventing dust and moisture from entering the inside of the display module.

[0028] As Figures 2-3 The QD diffusion plate with sealing adhesive also includes protruding rods 11, the protruding rods 11 are symmetrically connected to the left and right ends of the backlight layer 2, and the diffusion sheet 3, the color filter 4, the brightness enhancement film 5 and the first polarizer 6 are provided with through holes 12 at corresponding positions, when these components are stacked and connected in sequence, the protruding rods 11 and the through holes 12 are inserted to ensure that the elements of each layer can be accurately positioned during assembly.

[0029] Firstly, the backlight layer 2 provides a light source, after receiving power supply, the light emitting diode array or other light source types in the backlight layer 2 start to emit light, the light is uniformly distributed and guided to the diffusion sheet 3 through the light guide plate, after the diffusion sheet 3 receives the light of the backlight layer 2, the light is scattered by the scattering particles in the diffusion sheet 3, the concentrated light is diffused in all directions, the light uniformly covers the entire display area, the local brightness is avoided to be too high or the shadow phenomenon is avoided, the subsequent display is more uniform, the light uniformly distributed by the diffusion sheet 3 reaches the color filter 4, the RGB filter units in the color filter 4 selectively absorb and transmit light, the white light is decomposed into three primary colors, and a color image basis is formed according to a pixel matrix, the brightness enhancement film 5 plays a unique role on this basis, the light passing through the color filter 4 is redirected, the light that cannot enter the display area is reflected or refracted back to re-enter the display light path, so that the brightness and contrast of the display screen are improved, the first polarizer 6 and the second polarizer 61 work with the liquid crystal module 7, the first polarizer 6 first polarizes the light to limit the vibration direction of the light in a plane, the polarized light enters the liquid crystal module 7, the liquid crystal layer in the liquid crystal module 7 changes the molecular arrangement under the action of the electric field, and the light transmittance is modulated, and the second polarizer 61 polarizes the light modulated by the liquid crystal module 7 again, and further filters the light, so that the finally transmitted light meets the light intensity distribution required by the display image, the module provides a light source through the backlight layer 2, and a series of operations such as diffusion, filtering, brightness enhancement, polarization and liquid crystal modulation are performed, finally, high-quality image display is realized, and the assembly is accurate and stable in structure.

[0030] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A display module, characterized by: The display module comprises a back plate (1), a backlight layer (2), a color filter (4), a brightness enhancement film (5), a first polarizer (6), a second polarizer (61), a liquid crystal module (7), a sealing frame (8), an encapsulation frame (9), and a hardened glass layer (10). The backlight layer (2) is connected to the inner side of the back plate (1) and tightly adheres to the back plate (1). The color filter (4) is arranged inside the back plate (1) and closely adheres to the backlight layer (2). The brightness enhancement film (5) is attached to the front side of the color filter (4). The first polarizer (6), the liquid crystal module (7), and the second polarizer (61) are sequentially arranged to form a sandwich structure and tightly adhere to adjacent components. The sealing frame (8) is installed at the groove on the front side of the back plate (1). The encapsulation frame (9) is connected to the outer side of the second polarizer (61) and adheres to the sealing frame (8). The hardened glass layer (10) is located at the outermost layer of the display module and directly adheres to the front side of the encapsulation frame (9).

2. A display module according to claim 1, characterized in that: The display module further comprises limiting knobs (16). There are two limiting knobs (16) on the upper and lower sides of the encapsulation frame (9), and one limiting knob (16) on each of the left and right sides. Corresponding limiting grooves (15) are formed on the back plate (1). When the encapsulation frame (9) is encapsulated on the back plate (1), the limiting knobs (16) are inserted into the corresponding limiting grooves (15) to limit the position of the encapsulation frame (9).

3. A display module according to claim 2, wherein: The first polarizer (6) and the second polarizer (61) have a certain flexibility and can be attached to the liquid crystal module (7).

4. A display module according to claim 3, wherein: The backlight layer (2) uses LED light sources as light emitting elements, and the LED light sources are uniformly distributed on the inner side of the back plate (1).

5. A QD diffusion plate with encapsulation glue, characterized by: The QD diffusion plate with sealing glue is installed in the display module according to claim 4. The QD diffusion plate with sealing glue comprises a diffusion sheet (3), a sealing glue strip (13), and an L-shaped sealing glue (14). The diffusion sheet (3) is connected between the backlight layer (2) and the color filter (4). The backlight layer (2) is provided with the sealing glue strip (13) at the four corners. The L-shaped sealing glue (14) is provided at the four corners of the diffusion sheet (3), the color filter (4), the brightness enhancement film (5), and the first polarizer (6). When these components are stacked and connected, the L-shaped sealing glue (14) adheres to the sealing glue strip (13) to fill the gaps between the components.

6. The QD diffusion plate with encapsulating glue according to claim 5, characterized in that: The QD diffusion plate with sealing glue further comprises a protruding rod (11). The backlight layer (2) is symmetrically connected with the protruding rod (11) at the left and right ends. The diffusion sheet (3), the color filter (4), the brightness enhancement film (5), and the first polarizer (6) are provided with through holes (12) at corresponding positions. The protruding rod (11) is inserted into the through hole (12) for cooperation.

7. The QD diffusion plate with encapsulating glue according to claim 6, characterized in that: The surface of the diffusion sheet (3) has a frosted texture.

8. The QD diffusion plate with encapsulating glue according to claim 7, characterized in that: The L-shaped sealing glue (14) and the sealing glue strip (13) are made of materials with excellent adhesion and weather resistance.

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