The light-blocking structure of the monitor

Abstract

This utility model discloses a light-blocking structure for a display, relating to the field of display technology. The light-blocking structure includes a back panel and a shielding bracket. The back panel has a forward-facing opening, and multiple bent segments are formed at the edge of the opening. These bent segments bend inwards to form a support platform. A seam is formed between adjacent bent segments on the support platform. The shielding bracket is located on the back side of the support platform and includes a shielding plate. Along the front-rear direction, the projection of the shielding plate completely covers the seam. This utility model redesigns the traditional back panel seam structure, using a silicone shielding bracket to shield and support the seam, which not only improves the shielding effect but also effectively enhances the structural strength of the back panel opening.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a light-proof structure for a display. Background Technology

[0002] Currently, most LCD modules use F-shaped stamped backplates. The top corner is formed by splicing the top sidewall and the left and right sidewalls, and the splicing seam can cause light transmission. Typically, foam pads are inserted inside the F-groove, along with double-sided foam tape for attaching the LCD glass to the front, to block light. The double-sided foam tape on the front and the foam pad on the inside need to overlap in the projection direction. However, due to limitations in backplate manufacturing processes, foam pad dimensional tolerances, and other manufacturing processes, approximately 5% of modules actually have pinhole-like light transmission problems due to deformation of the inner foam or excessively large splicing seams. Sometimes, during backplate mold adjustments, dimensional deviations at the splicing point lead to defective batches, with a light transmission defect rate reaching 50%. Utility Model Content

[0003] The main purpose of this invention is to propose a light-blocking structure for a display, which aims to solve the problem that traditional back panel seam light-blocking structures have poor shielding effects and easily lead to pinhole-like light transmission in the display.

[0004] To achieve the above objectives, the present invention proposes a light-blocking structure for a display, comprising:

[0005] A back panel has a forward-facing opening, the edge of which is formed with multiple bent segments, all of which bend inwards to form a support platform. A seam is formed between adjacent bent segments on the support platform.

[0006] A shielding bracket is provided on the back side of the support platform. The shielding bracket includes a shielding plate portion, and the projection of the shielding plate portion completely covers the splicing seam in the front-to-back direction.

[0007] In one embodiment, the seam has a first seam segment and a second seam segment, which are arranged at an angle to each other.

[0008] In one embodiment, the back plate defines a mounting groove on the back side of the support portion;

[0009] The shielding bracket also includes a support plate portion extending in the front-rear direction. The shielding plate portion is disposed at the front end of the support plate portion and is supported in the mounting groove portion so that the shielding plate portion and the support platform portion are tightly abutted against each other.

[0010] In one embodiment, the support plate includes two sub-plates, one of which extends along the thickness direction of the other sub-plate, and the ends of the two sub-plates are connected.

[0011] In one embodiment, the two partition panels are respectively attached to the two adjacent inner walls of the back panel.

[0012] In one embodiment, the wall thickness of the shielding plate gradually decreases along the direction from the opening of the mounting groove toward the bottom of the groove.

[0013] In one embodiment, the light-blocking structure of the display further includes an adhesive strip portion, which is disposed on the support portion;

[0014] The adhesive strip is configured as a plurality of parts, and adjacent adhesive strips are spliced ​​together by an interlocking structure.

[0015] In one embodiment, the plug-in structure includes an adapter groove and an adapter protrusion disposed on two adjacent adhesive strip portions, wherein the adapter protrusion is inserted into the adapter groove.

[0016] In one embodiment, an installation indicator is provided on the front side of the support portion for aligning and installing the rubber strip portion.

[0017] In one embodiment, the shielding bracket further includes a support plate portion, wherein:

[0018] The shielding plate portion and the supporting plate portion are integrally formed; and / or,

[0019] Both the shielding plate and the support plate are made of silicone material, and the Shore hardness of the silicone material is HS, 70HA≤HS≤90HA.

[0020] In this invention, the traditional foam pad is replaced with a silicone shielding bracket, which reduces the amount of light entering the seam. Simultaneously, a back panel splicing method and foam adhesive strips for attaching to the glass are designed to prevent light that has already entered the seam from escaping through the mounting groove.

[0021] The silicone shielding bracket itself has a certain strength and will not deform when subjected to the impact of assembling the expansion plate and diaphragm, eliminating the risk of light transmission after the bracket is deformed. In addition, with this solution, the splicing gap of the back panel does not need to be strictly controlled as it is now (gap < 0.1mm). The splicing gap of the back panel can be widened to < 0.5mm, which can improve the stamping yield of the back panel and effectively reduce the actual production cost. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall structure of one embodiment of the light-blocking structure for the display provided by this utility model;

[0024] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 4 for Figure 3 A schematic diagram of the specific structure of the shielding bracket.

[0027] Explanation of icon numbers:

[0028] 100. Light-blocking structure of the monitor; 1. Back panel; 11. Bending section; 12. Support platform; 121. Splicing seam; 1211. First seam section; 1212. Second seam section; 13. Mounting groove; 2. Shielding bracket; 21. Shielding plate section; 22. Support plate section; 221. Separating plate section; 3. Adhesive strip section; 31. Adaptive protrusion; 32. Adaptive groove; 4. Mounting indicator section.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] 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 scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] Currently, most LCD modules use F-shaped stamped backplates. The top corner is formed by splicing the top sidewall and the left and right sidewalls, and the splicing seam can cause light transmission. Typically, foam pads are inserted inside the F-groove, along with double-sided foam tape for attaching the LCD glass to the front, to block light. The double-sided foam tape on the front and the foam pad on the inside need to overlap in the projection direction. However, due to limitations in backplate manufacturing processes, foam pad dimensional tolerances, and other manufacturing processes, approximately 5% of modules actually have pinhole-like light transmission problems due to deformation of the inner foam or excessively large splicing seams. Sometimes, during backplate mold adjustments, dimensional deviations at the splicing point lead to defective batches, with a light transmission defect rate reaching 50%.

[0034] This invention proposes a light-blocking structure for a display to solve the above problems.

[0035] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of this utility model, the light-blocking structure 100 of the display includes a back plate 1 and a shielding bracket 2. The back plate 1 has a forward-facing opening, and multiple bent segments 11 are formed at the edge of the opening. These bent segments 11 are all bent inwards to form a support platform 12. A seam 121 is formed between two adjacent bent segments 11 on the support platform 12. The shielding bracket 2 is located on the back side of the support platform 12 and includes a shielding plate 21. Along the front-rear direction, the projection of the shielding plate 21 completely covers the seam 121.

[0036] like Figure 1 and Figure 3As shown, the front and rear directions correspond to the front and rear ends of the display, with the front end direction being the display direction. The back panel 1 is the main structural component for mounting the internal structure of the display, and a liquid crystal display screen and related film structures are installed at its opening. Specifically, the auxiliary structural components for mounting the aforementioned components include the bent section 11 of the opening of the back panel 1. During the processing of the back panel 1, multiple bent sections 11 are simultaneously and continuously bent inwards to form a support portion 12 parallel to the edge of the back panel 1. The display screen is then mounted on the support portion 12 during subsequent installation. Since the support portion 12 is formed by multiple bent sections 11, a seam structure is formed at the ends of adjacent bent sections 11.

[0037] There is a certain risk of light leakage at the splicing structure. Therefore, the width of the splicing structure is strictly controlled during actual production and processing, generally requiring the width of the splice to be less than 0.1mm. However, in actual production, a large portion of the back panel 1 structure cannot meet the above control requirements. To prevent light from leaking out of the splice in the front-back direction, foam pads are generally inserted on the rear side of the support portion 12, and double-sided tape is attached to the front side of the support portion 12 to block internal light. However, corresponding display screen structures are installed on both the inner and outer sides of the support portion 12. During installation, the foam pads and adhesive are easily deformed, thus affecting their shielding effect. In actual production, it was found that the shielding effect was not obvious. Considering the above problems, in this embodiment, the shielding bracket 2 is used for light shielding. Specifically, the shielding bracket 2 is installed on the side of the support portion 12 corresponding to the rear of the display. During actual installation, the shielding plate portion 21 of the shielding bracket 2 and the support portion 12 are attached to one end face of the inner side of the back panel 1, and the shielding plate portion 21 is installed directly corresponding to the splicing seam 121. Therefore, the splicing seam 121 can be shielded by the shielding plate portion 21. The shielding plate portion 21 has a certain thickness and is not easily deformed, so it can achieve a good shielding effect at the splicing seam 121 after installation.

[0038] Furthermore, it is conceivable that the shielding plate portion 21 is located at one end of the support portion 12 corresponding to the inner side of the back plate 1. From the perspective of the overall installation structure, the front end direction of the support portion 12 is the external end direction of the display. By placing the shielding portion inside the support portion 12, the installation effect of the display structural components at the opening position of the back plate 1 can be maintained without affecting the display structural components, thus ensuring the aesthetics of the display structure's external appearance to a certain extent.

[0039] The above-described shielding method prevents light from passing through the inner side of the back panel 1 to the front of the back panel 1. Regarding the splicing seam 121 structure, conventional splicing seam 121 structures are straight seams. Within the plane of the support portion 12, some light from inside the back panel 1 will be emitted outwards along the extension direction of the splicing seam 121 structure. In this case, a visible light spot structure will be formed inside the opening of the back panel 1 of the display. To avoid the above problems as much as possible, the conventional splicing seam 121 structure is improved in this embodiment. Specifically, the splicing seam 121 has a first seam segment 1211 and a second seam segment 1212, which are arranged at an angle.

[0040] like Figure 3 As shown, one end of the first seam segment 1211 and the second seam segment 1212 are connected, and the first seam segment 1211 and the second seam segment 1212 are set at an angle, with the vertex of the angle being the inflection point of the splice seam 121. With this arrangement, within the plane of the support portion 12, light first travels along the first seam segment 1211 towards the inner wall of the back plate 1. When it reaches the inflection point, the second seam segment 1212 blocks most of the light transmission, effectively reducing the light intensity and preventing the formation of visible light spots on the inner wall of the back plate 1.

[0041] It is conceivable that, to further prevent light from escaping outwards from the seam 121, the number of seam segments comprising the seam 121 can be adaptively increased. Multiple bent seam segments can more effectively block light within the seam structure, thereby preventing the formation of light spots. Additionally, a coating structure can be applied to the inner walls of the first seam segment 1211 and the second seam segment 1212 to absorb reflected light, thereby enhancing the reduction effect on reflected light. Of course, the seam segments are not limited to... Figure 3 The straight seam structure shown can be configured as a seam with an irregular cross section, provided that the requirement of blocking light propagation is met. However, in actual implementation, the requirement that the bending section 11 of the back plate 1 is easy to bend and form must also be taken into consideration.

[0042] In one embodiment of this utility model, an installation structure for limiting the installation of the shielding bracket 2 is formed near the opening of the back plate 1. Specifically, the back plate 1 defines an installation groove 13 on the back side of the support portion 12; the shielding bracket 2 also includes a support plate portion 22 extending in the front-rear direction, the shielding plate portion 21 is disposed at the front end of the support plate portion 22, and the support plate portion 22 is supported in the installation groove 13 so that the shielding plate portion 21 and the support portion 12 are tightly abutted against each other.

[0043] like Figure 2 and Figure 3 As shown, a stepped portion is formed on the inner side of the back plate 1 corresponding to the entire enclosing ring of the support portion 12. A mounting groove 13 is formed between the forward-facing end face of the stepped portion and the rear-facing end face of the support portion 12. During installation, the integral bracket structure formed by the support plate portion 22 and the shielding plate portion 21 is installed within the mounting groove 13. It should be noted that the entire shielding bracket 2 needs to be recessed within the mounting groove 13 to prevent the bracket from protruding outwards from the mounting groove 13, which would affect the display effect. To ensure the shielding effect of the shielding plate 21 on the splice seam 121 of the support plate 12, the support plate 22 has a length extending in the front-back direction. During actual installation, the support plate 22 can be supported on the two inner wall structures in the front-back direction of the mounting groove 13, so that the shielding plate 21 is as close as possible to the end face structure at the end of the splice seam 121, thereby preventing light leakage from the contact surface between the support plate 12 and the shielding plate 21.

[0044] During the actual installation process described above, when the integrated structure formed by the support plate part 22 and the shielding plate part 21 is installed, it is installed inside the mounting groove part 13 by means of interference fit. In actual installation, it is necessary to take into account that the overall flatness of the support plate part 12 is not affected, so the interference is generally controlled at 3% to 6%.

[0045] It should also be noted that the support plate 22 and the shielding plate 21 are integrally molded from silicone material. The silicone material has a certain supporting strength, which needs to meet the downward pressure requirements during the installation of the structural components on the back plate 1. Therefore, in the actual design of the entire shielding bracket 2, through multiple experiments, the thickness of the support plate 22 was increased relative to the shielding plate 21 to allow the support plate 22 to withstand as much downward pressure from the back plate 1 as possible, and to minimize the deformation of the support plate 22 during the application of force, which could cause the shielding plate 21 and the end face of the support platform 12 to separate. Specifically, the thickness of the support plate 22 is set at approximately 1.4 mm, and the Shore hardness of the entire shielding bracket 2 is set between 70HA and 90HA, preferably using silicone material with a Shore hardness of 80HA. The use of a silicone structure serves two purposes. First, when setting up an interference fit structure, the traditional hard contact structure prevents the shielding bracket 2 from being difficult to install. Second, the silicone material has a certain elastic deformation capability. After the entire shielding bracket 2 is installed using an interference fit, the support plate 22 can be engaged with the inner side of the mounting groove 13 due to elastic force. This effectively promotes the contact between the shielding plate 21 and the end side of the support 12, making the installation of the entire shielding bracket 2 more stable.

[0046] To improve the actual support effect of the support plate 22, in the actual design process, the support plate 22 is configured as two plate structures to form two stable support surfaces at their contact ends. Specifically, the support plate 22 includes two sub-plates 221, one of which extends along the thickness direction of the other sub-plate 221, and the ends of the two sub-plates 221 are connected.

[0047] like Figure 3 and Figure 4 As shown, the support plate portion 22 is composed of two identical sub-plate portions 221, with one end of the two sub-plate portions 221 connected and arranged at a 90-degree right angle to each other. The shielding plate portion 21 is installed at one end of the connection position of the two sub-plate portions 221, and extends at least partially to the side of the included angle formed by the two sub-plate portions 221, thereby forming a mutually perpendicular three-sided support structure. In specific installation, the two sub-plate portions 221 are respectively attached to the two right-angled inner walls adjacent to the opening end of the back plate 1, and at the same time, the shielding plate portion 21 is correspondingly attached to the rearward end face of the support platform portion 12.

[0048] It should be noted that the support platform 12 is formed by bending the bent section 11 at the opening of the back plate 1 inward. It is conceivable that, to meet the bending requirements, a bending gap needs to be formed at the corner corresponding to the opening of the back plate 1. The splicing seam 121 is formed by this bending gap, so the specific location of the splicing seam 121 is generally formed at the corner of the opening of the back plate 1. Therefore, in the above embodiment, the support plate 22 is configured as two mutually perpendicular sub-plates 221, allowing each of the two sub-plates 221 to have limiting installation features at the opening of the back plate 1. While ensuring the stability of the installation position of the support plate 22, it can also be supported simultaneously at both ends of the support plate 22 by the two supporting surfaces, further improving the installation stability of the support plate 22 within the mounting groove 13.

[0049] As described above, in the back plate 1, the front end of the support portion 12 is typically used to mount a screen structure, and a corresponding optical film structure is typically installed in the mounting groove portion 13. Since the shielding bracket 2 is located within the mounting groove portion 13, the optical film structure needs to be installed inside the shielding bracket 2 when it is installed. To allow the film structure to be better installed inside the shielding bracket 2, in this embodiment, the thickness of the shielding plate portion 21 is adjusted. Specifically, the wall thickness of the shielding plate portion 21 gradually decreases along the direction from the opening of the mounting groove portion 13 towards its bottom.

[0050] like Figure 3 and Figure 4 As shown, after the above settings, the shielding plate portion 21 is thinner in the area away from the support plate portion 22, which means that the opening of the shielding bracket 2 is relatively large. The shielding plate portion 21 is wider towards the bottom of the mounting groove portion 13. When the diaphragm structure is actually installed, the inclined inner wall structure of the shielding plate portion 21 can guide the installation of the diaphragm structure, so that the diaphragm structure can be better inserted and installed into the bottom of the mounting groove.

[0051] In the actual structure, a chamfered structure is provided at the junction of the shielding plate portion 21 and the support plate portion 22 to increase the supporting force at the junction of the support plate portion 22 and the shielding plate portion 21. The thinnest part of the shielding plate portion 21 is set to 0.7mm, and its junction end is relatively thick, which can provide stable supporting force. In order to facilitate the installation of the shielding bracket 2 in the mounting groove portion 13, a chamfered structure is also formed on the end of the support plate portion 22 away from the shielding plate portion 21.

[0052] The light-blocking structure 100 of the display also includes an adhesive strip 3, which is disposed on the support 12. Multiple adhesive strips 3 are provided, and adjacent adhesive strips 3 are spliced ​​together by an interlocking structure.

[0053] The adhesive strip 3 assists in mounting the display screen structure onto the support platform 12. Simultaneously, the adhesive strip 3 and the shielding plate 21 are respectively positioned on both sides of the support platform 12. The adhesive strip 3 also, to a certain extent, allows light from inside the back panel 1 to be emitted outwards towards the splicing seam 121 in the front-to-back direction. Specifically, as... Figure 2 As shown, the adhesive strip 3 is installed on the front end face of the support 12. After the adhesive strip 3 is installed, it can cover one end of the splice seam 121 on the front end face of the support 12, thereby enhancing the covering effect of the splice seam 121 in the front-back direction to a certain extent.

[0054] The adhesive strips 3 form a frame structure, and a plug-in structure is provided at one end where two adhesive strips 3 meet. Specifically, the plug-in structure includes an adapter groove 32 and an adapter protrusion 31 respectively provided on two adjacent adhesive strips 3, and the adapter protrusion 31 is inserted into the adapter groove 32.

[0055] like Figure 2 As shown, the plug-in structure includes the adapter groove 32 and the adapter protrusion 31. During installation, one end of the adapter protrusion 31 is inserted into the adapter groove 32 for positioning. Using this structure to install the two adhesive strips 3 ensures the connection stability between the mating ends of the two adhesive strips 3. During installation, the structure can be used as the basis for connection, thus preventing deformation of the adhesive strips during the installation process.

[0056] In order to ensure the straightness of the adhesive strip 3 during the pasting process and avoid the adhesive strip 3 being pasted crookedly, and to avoid affecting the connection between the adapter groove 32 and the adapter protrusion 31 due to improper pasting, in this embodiment, an installation indicator 4 is provided on the front side of the support 12 for the alignment and installation of the adhesive strip 3.

[0057] The indicator part can be set as the recessed part in this solution. When actually pasting the adhesive strip part 3, especially at its end position, the side of the adhesive strip part 3 can be aligned with the recessed part for pasting. At the corner of the opening of the back plate 1, the two recessed parts on the support part 12 are set perpendicular to each other and pasted according to the extension direction of the groove edge of the recessed part. This can effectively ensure the fit of the end structure of the two adhesive strip parts 3 and provide better convenience when pasting the adhesive strip.

[0058] It is conceivable that, in addition to the aforementioned groove structure, the installation indicator 4 could also be configured as a drawing line on the support 12. The installation display 4 should not be configured as a protruding structure extending beyond the front end face of the support 12, as such a structure would affect the installation of the adhesive strip 3. During the downward pressure installation of the display screen structure, stress concentration could easily occur, leading to damage to the display screen structure.

[0059] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A light leakage preventing structure of a display, characterized by, include: A back panel has a forward-facing opening, the edge of which is formed with multiple bent segments, all of which bend inwards to form a support platform. A seam is formed between adjacent bent segments on the support platform. A shielding bracket is provided on the back side of the support platform. The shielding bracket includes a shielding plate portion, and the projection of the shielding plate portion completely covers the splicing seam in the front-to-back direction.

2. The anti -see -through structure for a display of claim 1, wherein, The seam has a first seam segment and a second seam segment, which are arranged at an angle to each other.

3. The light-blocking structure of the display as described in claim 1, characterized in that, The back plate defines a mounting groove on the back side of the foundation portion; The shielding bracket also includes a support plate portion extending in the front-rear direction. The shielding plate portion is disposed at the front end of the support plate portion and is supported in the mounting groove portion so that the shielding plate portion and the support platform portion are tightly abutted against each other.

4. The light-blocking structure of the display as described in claim 3, characterized in that, The support plate includes two sub-plates, one of which extends along the thickness direction of the other sub-plate, and the ends of the two sub-plates are connected.

5. The light-blocking structure of the display as described in claim 4, characterized in that, The two sub-plates are respectively attached to the two adjacent inner walls of the back plate.

6. The light-blocking structure of the display as described in claim 3, characterized in that, The wall thickness of the shielding plate gradually decreases along the direction from the opening of the mounting groove toward the bottom of the groove.

7. The light-blocking structure of the display as described in claim 1, characterized in that, The light-blocking structure of the display also includes an adhesive strip, which is disposed on the support platform. The adhesive strip is configured as a plurality of parts, and adjacent adhesive strips are spliced ​​together by an interlocking structure.

8. The light-blocking structure of the display as described in claim 7, characterized in that, The plug-in structure includes an adapter groove and an adapter protrusion disposed on two adjacent rubber strips, wherein the adapter protrusion is inserted into the adapter groove.

9. The light-blocking structure of the display as described in claim 7, characterized in that, The front side of the support portion is provided with an installation indicator for aligning and installing the rubber strip portion.

10. The light-blocking structure of the display as described in claim 1, characterized in that, The shielding bracket also includes a support plate, wherein: The shielding plate portion and the supporting plate portion are integrally formed; and / or, Both the shielding plate and the support plate are made of silicone material, and the Shore hardness of the silicone material is HS, 70HA≤HS≤90HA.

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