A light leakage prevention ultra-narrow frame liquid crystal display panel

Abstract

The utility model relates to liquid crystal display panel technical field, specifically disclose a kind of light leakage prevention ultra-narrow frame's liquid crystal display panel, including upper glass substrate, lower glass substrate, liquid crystal layer, upper polaroid and lower polaroid, liquid crystal layer is encapsulated between upper and lower glass substrate, upper and lower polaroid respectively adhere to the outside of upper and lower glass substrate, still include L-shaped embedded light shield part, the edge of four edges non-display area of upper glass substrate and lower glass substrate is equipped with step, step includes horizontal bearing surface and vertical light shielding surface, vertical light shielding surface extends perpendicularly to liquid crystal layer direction, the inside of vertical light shielding surface is coated with black light-absorbing coating, L-shaped embedded light shield part includes horizontal joint part and longitudinal light shielding part, horizontal joint part is fixed in horizontal bearing surface by buckle, one end of longitudinal light shielding part adheres to the outside of vertical light shielding surface, the other end of longitudinal light shielding part extends to polaroid edge. The utility model all-around dead angle light shielding, no bright edge phenomenon, structure is stable and suitable for large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display panel technology, specifically to a liquid crystal display panel with an ultra-narrow bezel that prevents light leakage. Background Technology

[0002] LCD technology is widely used in various terminal devices. The demand for full-screen displays has driven ultra-narrow bezels (≤1.0mm) to become a core trend, while edge light leakage has become a key factor restricting technological upgrades.

[0003] Existing LCD panels consist of upper and lower glass substrates, a liquid crystal layer, a polarizer, and a light-shielding component. The liquid crystal layer is encapsulated between the two substrates, and the non-display areas on the four sides are used to arrange TFT traces and frame adhesive. Existing narrow bezel solutions are mostly achieved by reducing the width of the non-display area. Light leakage prevention relies on the ink screened on the edge of the substrate or the external application of light-shielding adhesive strips, without optimizing the substrate structure and component matching logic.

[0004] With the reduction of the non-display area of ​​existing LCD panels, the traditional ink light-blocking range cannot accurately cover the light leakage path on the side of the liquid crystal layer. The external adhesive strip needs to reserve an assembly gap, making it difficult for the bezel to be narrower than 1.8mm. Furthermore, the superposition of reflection and light leakage from TFT traces exacerbates the bright edge. At the same time, the edges of the glass substrate are mostly flat, which easily forms vertical light leakage gaps. In addition, some solutions use complex structures, which increases the processing difficulty. The positioning accuracy of each component is difficult to control, resulting in low mass production yield, high production cost, and difficulty in adapting to automated production lines. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a liquid crystal display panel with an ultra-narrow bezel that prevents light leakage. It provides all-around light blocking without blind spots, eliminates bright edges, has a stable structure, and is suitable for mass production. It effectively solves the problems of light leakage at the lower edge of the ultra-narrow bezel, reflection superposition, and excessively wide bezel.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A liquid crystal display panel with an ultra-narrow bezel and light leakage prevention includes an upper glass substrate, a lower glass substrate, a liquid crystal layer, an upper polarizer, and a lower polarizer. The liquid crystal layer is encapsulated between the upper and lower glass substrates. The upper and lower polarizers are respectively attached to the outer sides of the upper and lower glass substrates. The panel also includes an L-shaped embedded light-shielding component. Steps are provided on the edges of the non-display areas of the four sides of the upper and lower glass substrates. Each step includes a horizontal bearing surface and a vertical light-shielding surface. The vertical light-shielding surface extends vertically towards the liquid crystal layer and is aligned with the edge of the liquid crystal layer. The inner side of the vertical light-shielding surface is coated with a black light-absorbing coating. The L-shaped embedded light-shielding component includes a horizontal snap-fit ​​part and a vertical light-shielding part. The horizontal snap-fit ​​part is fixed to the horizontal bearing surface by a snap-fit. One end of the vertical light-shielding part is attached to the outer side of the vertical light-shielding surface, and the other end of the vertical light-shielding part extends to the edge of the polarizer, forming a secondary light-shielding barrier.

[0008] Preferably, the steps include a first step and a second step. The first step has four sections, which are respectively disposed on the edges of the non-display areas on the left, right, top, and bottom sides of the upper glass substrate. The second step has four sections, which are respectively disposed on the edges of the non-display areas on the left, right, top, and bottom sides of the lower glass substrate. The first step and the second step are mirror symmetrical. The first step includes a first horizontal bearing surface and a first vertical light-shielding surface. The second step includes a second horizontal bearing surface and a second vertical light-shielding surface. The first vertical light-shielding surface extends vertically downward, and the second vertical light-shielding surface extends vertically upward. The inner side of the first vertical light-shielding surface is aligned with the upper edge of the liquid crystal layer, and the inner side of the second vertical light-shielding surface is aligned with the lower edge of the liquid crystal layer. The inner sides of both the first and second vertical light-shielding surfaces are coated with a black light-absorbing coating.

[0009] Preferably, there are two L-shaped embedded light-shielding members, corresponding to the upper glass substrate and the lower glass substrate respectively. The first L-shaped embedded light-shielding member includes a first lateral snap-fit ​​part and a first longitudinal light-shielding part. The first lateral snap-fit ​​part is fixed to the first horizontal bearing surface by a snap fastener. One end of the first longitudinal light-shielding part is attached to the outside of the first vertical light-shielding surface, and the other end of the first longitudinal light-shielding part extends to the edge of the upper polarizer.

[0010] Preferably, the second L-shaped embedded light shield includes a second lateral snap-fit ​​portion and a second longitudinal light shield portion. The second lateral snap-fit ​​portion is fixed to the second horizontal bearing surface by a snap fastener. One end of the second longitudinal light shield portion is attached to the outer side of the second vertical light shield surface, and the other end of the second longitudinal light shield portion extends to the edge of the lower polarizer.

[0011] Preferably, the L-shaped embedded light-shielding component is integrally molded from black light-shielding PC material.

[0012] Preferably, the inner surface of the lower glass substrate is provided with a ring-shaped adhesive. The adhesive is distributed in the non-display area and located on the outer periphery of the liquid crystal layer. The top of the adhesive is attached to the inner surface of the upper glass substrate. After curing, it is used to fix the upper and lower glass substrates and seal the liquid crystal layer.

[0013] Preferably, a first elastic light-shielding adhesive layer is provided at the edge between the upper glass substrate and the upper polarizer. The first elastic light-shielding adhesive layer is made of silicone material, and a plurality of hemispherical first micro-protrusions are provided on the side facing the upper polarizer.

[0014] Preferably, a second elastic light-shielding adhesive layer is provided at the edge between the lower glass substrate and the lower polarizer. The second elastic light-shielding adhesive layer is made of silicone material, and a number of hemispherical second micro-protrusions are provided on the side facing the lower polarizer.

[0015] The beneficial effects of this invention are as follows: By extending the vertical light-shielding surface towards the liquid crystal layer and precisely aligning it with the edge of the liquid crystal layer, the black light-absorbing coating on the inner side directly blocks the initial path of light leakage from the liquid crystal layer, solving the problem of longitudinal light leakage in the prior art; the lateral snap-fit ​​part of the L-shaped embedded light-shielding component is fixed to the horizontal bearing surface by a snap-fit, and the longitudinal light-shielding part is attached to the vertical light-shielding surface and extends to the edge of the polarizer, forming a double protection of inner absorption and outer blocking, solving the problem of bright edges caused by the superposition of light leakage and reflection; the embedded assembly and the stepped structure surrounding the four sides do not occupy additional space in the non-display area, solving the limitation of the traditional light-shielding structure occupying the frame space and realizing an ultra-narrow bezel design; the snap-fit ​​fixing method ensures that the lateral snap-fit ​​part is tightly attached to the horizontal bearing surface, avoiding splicing gaps and corner light leakage in the split light-shielding structure, while improving assembly consistency, adapting to automated production lines, and enhancing the overall structural stability. Attached Figure Description

[0016] Figure 1 This is an exploded structural diagram of an embodiment of the present invention;

[0017] Figure 2 This is a partial cross-sectional structural schematic diagram of an embodiment of the present utility model;

[0018] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged structural diagram of section A;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 2 Enlarged structural diagram of section B;

[0020] Explanation of reference numerals in the attached drawings: 10-Upper glass substrate, 11-Lower glass substrate, 12-Liquid crystal layer, 13-Upper polarizer, 14-Lower polarizer, 15-Frame adhesive, 16-First horizontal bearing surface, 17-First vertical light-shielding surface, 18-Second horizontal bearing surface, 19-Second vertical light-shielding surface, 20-First L-shaped embedded light-shielding component, 21-First lateral snap-fit ​​portion, 22-First vertical light-shielding portion, 23-Second L-shaped embedded light-shielding component, 24-Second lateral snap-fit ​​portion, 25-Second vertical light-shielding portion, 26-Snap fastener, 30-First elastic light-shielding bonding layer, 31-First micro-protrusion, 32-Second elastic light-shielding bonding layer, 33-Second micro-protrusion. Detailed Implementation

[0021] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments:

[0022] This embodiment: as follows Figure 1-4As shown, a liquid crystal display panel with an ultra-narrow bezel and light leakage prevention includes an upper glass substrate 10, a lower glass substrate 11, a liquid crystal layer 12, an upper polarizer 13, a lower polarizer 14, and an L-shaped embedded light-shielding member. A ring-shaped frame adhesive 15 is provided on the inner surface of the lower glass substrate 11. The frame adhesive 15 is distributed in the non-display area and located on the outer periphery of the liquid crystal layer 12. The top of the frame adhesive 15 is bonded to the inner surface of the upper glass substrate 10. After curing, it is used to fix the upper glass substrate 10 and the lower glass substrate 11 and seal the liquid crystal layer 12. The upper and lower polarizers 14 are respectively bonded to the outer sides of the upper and lower glass substrates 11. A first step is provided on the edges of the non-display areas on the left, right, top, and bottom sides of the upper glass substrate 10, and a second step is provided on the edges of the non-display areas on the left, right, top, and bottom sides of the lower glass substrate 11. The first and second steps are mirror-symmetrical. The first step includes a first horizontal bearing surface 16 and a second horizontal bearing surface 17. A vertical light-shielding surface 17 and a second step including a second horizontal bearing surface 18 and a second vertical light-shielding surface 19 are provided. The first vertical light-shielding surface 17 extends vertically downward and the second vertical light-shielding surface 19 extends vertically upward. The inner side of the first vertical light-shielding surface 17 is aligned with the upper edge of the liquid crystal layer 12 and the inner side of the second vertical light-shielding surface 19 is aligned with the lower edge of the liquid crystal layer 12. The inner sides of both the first vertical light-shielding surface 17 and the second vertical light-shielding surface 19 are coated with a black light-absorbing coating. Through the mirror symmetry design of the first step on the four sides of the upper glass substrate 10 and the second step on the four sides of the lower glass substrate 11, the first vertical light-shielding surface 17 extends downward and the second vertical light-shielding surface 19 extends upward and are both precisely aligned with the edge of the liquid crystal layer 12. The black light-absorbing coating on the inner side directly blocks the initial path of light leakage on the side of the liquid crystal layer 12, which solves the problem of longitudinal light leakage caused by the alignment deviation between the vertical light-shielding surface and the liquid crystal layer 12 in the prior art.

[0023] The L-shaped embedded light-shielding component is integrally molded from black light-shielding PC material. Two L-shaped embedded light-shielding components are provided, corresponding to the upper glass substrate 10 and the lower glass substrate 11 respectively. The first L-shaped embedded light-shielding component 20 includes a first transverse latching portion 21 and a first longitudinal light-shielding portion 22. The first transverse latching portion 21 is fixed to the first horizontal bearing surface 16 by a buckle 26. One end of the first longitudinal light-shielding portion 22 is attached to the outer side of the first vertical light-shielding surface 17, and the other end extends to the edge of the upper polarizer 13, forming a secondary light-shielding barrier. The second L-shaped embedded light-shielding component 23 includes a second transverse latching portion 24 and a second longitudinal light-shielding portion 25. The second horizontal snap-fit ​​part 24 is fixed to the second horizontal bearing surface 18 by the snap fastener 26. One end of the second vertical light-shielding part 25 is attached to the outside of the second vertical light-shielding surface 19, and the other end of the second vertical light-shielding part 25 extends to the edge of the lower polarizer 14 to form a secondary light-shielding barrier. The snap fastener 26 fixation method improves assembly consistency, adapts to automated production lines, and enhances the overall structural stability. The dual protection of inner absorption and outer blocking solves the problem of bright edge caused by the superposition of light leakage and reflection. At the same time, the embedded assembly and the stepped structure around the four sides do not occupy additional space in the non-display area, solving the limitation of the traditional light-shielding structure occupying the frame space and realizing the ultra-narrow bezel design.

[0024] A first elastic light-shielding adhesive layer 30 is provided at the edge between the upper glass substrate 10 and the upper polarizer 13. The first elastic light-shielding adhesive layer 30 is made of silicone material, and a plurality of hemispherical first micro-protrusions 31 are provided on the side facing the upper polarizer 13. The upper glass substrate 10 and the upper polarizer 13 are pressed and cured to fill the interlayer gap between the upper polarizer 13 and the upper glass substrate 10, blocking lateral light leakage. A second elastic light-shielding adhesive layer 32 is provided at the edge between the lower glass substrate 11 and the lower polarizer 14. The second elastic light-shielding adhesive layer 32 is made of silicone material, and a plurality of hemispherical second micro-protrusions 33 are provided on the side facing the lower polarizer 14. The lower glass substrate 11 and the lower polarizer 14 are pressed and cured to fill the interlayer gap between the lower polarizer 14 and the lower glass substrate 11, blocking lateral light leakage.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A liquid crystal display panel with an ultra-narrow bezel and light leakage prevention, comprising an upper glass substrate, a lower glass substrate, a liquid crystal layer, an upper polarizer, and a lower polarizer, wherein the liquid crystal layer is encapsulated between the upper and lower glass substrates, and the upper and lower polarizers are respectively attached to the outer sides of the upper and lower glass substrates, characterized in that: It also includes an L-shaped embedded light shield, with steps provided on the edges of the non-display areas on all four sides of the upper and lower glass substrates. The steps include a horizontal bearing surface and a vertical light shield. The vertical light shield extends vertically toward the liquid crystal layer and is aligned with the edge of the liquid crystal layer. The inner side of the vertical light shield is coated with a black light-absorbing coating. The L-shaped embedded light shield includes a lateral snap-fit ​​part and a longitudinal light shield. The lateral snap-fit ​​part is fixed to the horizontal bearing surface by a snap fastener. One end of the longitudinal light shield is attached to the outer side of the vertical light shield, and the other end of the longitudinal light shield extends to the edge of the polarizer, forming a secondary light shield barrier.

2. The liquid crystal display panel with an anti-light leakage ultra-narrow bezel according to claim 1, characterized in that: The step includes a first step and a second step. The first step has four sections, which are respectively located at the edges of the non-display areas on the left, right, top, and bottom sides of the upper glass substrate. The second step has four sections, which are respectively located at the edges of the non-display areas on the left, right, top, and bottom sides of the lower glass substrate. The first step and the second step are mirror symmetrical. The first step includes a first horizontal bearing surface and a first vertical light-shielding surface. The second step includes a second horizontal bearing surface and a second vertical light-shielding surface. The first vertical light-shielding surface extends vertically downward, and the second vertical light-shielding surface extends vertically upward. The inner side of the first vertical light-shielding surface is aligned with the upper edge of the liquid crystal layer, and the inner side of the second vertical light-shielding surface is aligned with the lower edge of the liquid crystal layer. The inner sides of both the first and second vertical light-shielding surfaces are coated with a black light-absorbing coating.

3. The liquid crystal display panel with an anti-light leakage ultra-narrow bezel according to claim 2, characterized in that: Two L-shaped embedded light-shielding components are provided, corresponding to the upper glass substrate and the lower glass substrate respectively. The first L-shaped embedded light-shielding component includes a first lateral snap-fit ​​part and a first longitudinal light-shielding part. The first lateral snap-fit ​​part is fixed to the first horizontal bearing surface by a snap fastener. One end of the first longitudinal light-shielding part is attached to the outside of the first vertical light-shielding surface, and the other end of the first longitudinal light-shielding part extends to the edge of the upper polarizer.

4. A liquid crystal display panel with an anti-light leakage ultra-narrow bezel according to claim 3, characterized in that: The second L-shaped embedded light shield includes a second transverse snap-fit ​​part and a second longitudinal light shield part. The second transverse snap-fit ​​part is fixed to the second horizontal bearing surface by a snap fastener. One end of the second longitudinal light shield part is attached to the outside of the second vertical light shield surface, and the other end of the second longitudinal light shield part extends to the edge of the lower polarizer.

5. A liquid crystal display panel with an anti-light leakage ultra-narrow bezel according to any one of claims 1-4, characterized in that: The L-shaped embedded light-shielding component is integrally molded from black light-shielding PC material.

6. A liquid crystal display panel with an anti-light leakage ultra-narrow bezel according to any one of claims 1-4, characterized in that: The inner surface of the lower glass substrate is provided with a ring-shaped adhesive. The adhesive is distributed in the non-display area and located on the outer periphery of the liquid crystal layer. The top of the adhesive is attached to the inner surface of the upper glass substrate. After curing, it is used to fix the upper and lower glass substrates and seal the liquid crystal layer.

7. A liquid crystal display panel with an anti-light leakage ultra-narrow bezel according to any one of claims 1-4, characterized in that: A first elastic light-shielding adhesive layer is provided at the edge between the upper glass substrate and the upper polarizer. The first elastic light-shielding adhesive layer is made of silicone material, and a number of hemispherical first micro-protrusions are provided on the side facing the upper polarizer.

8. A liquid crystal display panel with an anti-light leakage ultra-narrow bezel according to any one of claims 1-4, characterized in that: A second elastic light-shielding adhesive layer is provided at the edge between the lower glass substrate and the lower polarizer. The second elastic light-shielding adhesive layer is made of silicone material, and a number of hemispherical second micro-protrusions are provided on the side facing the lower polarizer.

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