Narrow-frame liquid crystal display screen facilitating wiring of display panel

Abstract

The utility model discloses a narrow frame liquid crystal display screen convenient for wiring of a display panel, which comprises a lower polaroid, a lower substrate, an upper substrate, an upper polaroid and a cover plate which are sequentially overlapped from bottom to top, and the lower substrate is longer than the upper substrate and extends outwards to form a step. The upper surface of the lower substrate located at the step is bound with an FPC and a driving IC, the driving IC is provided with three rows of Pad groups which are sequentially arranged from top to bottom and have electrical properties, each row of Pad group is formed by sequentially arranging a plurality of binding Pads, the binding positions of the binding Pads in the middle of the first row of Pad group are horizontally arranged, and the binding positions of the binding Pads in the middle of the second row of Pad group are horizontally arranged. The binding positions of the binding Pads on the two sides of the middle part of the first row of Pad groups are sequentially decreased from inside to outside, and the binding positions of the binding Pads on the edges of the two sides of the first row of Pad groups are flush with the binding positions of the binding Pads on the middle part of the first row of Pad groups.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a narrow-frame liquid crystal display screen which is convenient for display panel wiring. Background Art

[0002] See also Figure 1 With the popularity of LCD screens, consumers have put forward higher requirements for narrow borders of LCD screens. The existing design of the driver IC1' structure can reduce the lower border to a certain extent. However, the PIN layout of the driver IC1' in the prior art is not optimal for wiring. Figure 1 As shown, the binding Pad11' at the upper left and upper right corners of the first row of Pad groups of the existing driver IC1' is a Dummy Pad12', which has no electrical properties. These Dummy Pad12' only play a physical support role to prevent the overall uneven force when the subsequent driver IC1' is bound. However, these Dummy Pad12' will cause obstructions when wiring on the display panel. In order to avoid the Dummy Pad12', winding is required, making the wiring very time-consuming. These redundant Dummy Pad12' also cause waste of materials. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to arrange the binding pad more reasonably to facilitate the wiring of the display panel, avoid obstruction when wiring the display panel, and improve the wiring efficiency.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a narrow-frame liquid crystal display screen that is convenient for display panel wiring, which includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate that are sequentially stacked from bottom to top, the lower substrate is longer than the upper substrate and extends outward to form a step, the upper surface of the lower substrate located at the step is bound with an FPC and a driver IC, and the driver IC is provided with three rows of Pad groups with electrical properties sequentially arranged from top to bottom, each row of the Pad group is composed of a plurality of bound Pads arranged in sequence, and the middle part of the first row of the Pad group is The binding positions of the binding pads are arranged horizontally, the binding positions of the binding pads on both sides of the middle part of the pad group in the first row decrease sequentially from the inside to the outside, the binding positions of the binding pads on both side edges of the pad group in the first row are flush with the binding positions of the binding pads in the middle part, the binding positions of the binding pads in the middle part of the pads in the second row are arranged horizontally, the binding positions of the binding pads on both sides of the middle part of the pad group in the second row decrease sequentially from the inside to the outside, and the binding pads of the pad group in the third row are arranged in the middle and are arranged horizontally.

[0006] As a preferred embodiment of the narrow-border LCD screen that is convenient for display panel wiring provided by the utility model, the binding positions of the binding pads on both side edges of the first row of the Pad group rise sequentially from the inside to the outside, and the binding position of the binding pad at the very end is flush with the binding position of the binding pad in the middle part.

[0007] As a preferred embodiment of the narrow-frame LCD screen that facilitates display panel wiring provided by the utility model, the binding positions of the binding Pads on both side edges of the first row of the Pad group are horizontally arranged and flush with the binding positions of the binding Pads in the middle part.

[0008] As a preferred embodiment of the narrow-frame LCD screen that facilitates display panel wiring provided by the utility model, the FPC includes a substrate layer, a circuit layer arranged on the upper surface of the substrate layer, and a metal heat dissipation layer arranged on the lower surface of the substrate layer.

[0009] As a preferred embodiment of the narrow-frame liquid crystal display screen that is convenient for display panel wiring provided by the utility model, the FPC also includes at least one through-hole penetrating the substrate layer, the circuit layer and the metal heat dissipation layer, and the inner wall of the through-hole is provided with a thermal conductive layer in contact with the circuit layer and the metal heat dissipation layer.

[0010] As a preferred implementation of the narrow-framed liquid crystal display screen that facilitates display panel wiring provided by the utility model, a heat conductor connected to an external heat-conducting structure is arranged in the through hole, and the heat conductor is in contact with the heat-conducting layer.

[0011] As a preferred implementation of the narrow-frame liquid crystal display screen that facilitates display panel wiring provided by the utility model, the structure of the metal heat dissipation layer is a mesh structure, a strip structure, a wavy structure or a honeycomb structure.

[0012] As a preferred embodiment of the narrow-frame LCD screen that facilitates display panel wiring provided by the utility model, a plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

[0013] As a preferred implementation of the narrow-framed liquid crystal display screen that facilitates display panel wiring provided by the utility model, the groove is a closing groove that is narrow on the outside and wide on the inside.

[0014] As a preferred implementation of the narrow-framed liquid crystal display screen that facilitates display panel wiring provided by the utility model, the groove is in the shape of a long strip.

[0015] The utility model has the following beneficial effects:

[0016] Since the binding positions of the binding pads on both side edges of the first row of pad groups are flush with the binding positions of the binding pads in the middle part, the dummy pads without electrical properties are deleted on the basis of the prior art, and the effective binding pads on both side edges are moved upward and kept flush with the binding positions of the binding pads in the middle part, thereby increasing the binding force to provide physical support, which can prevent overall uneven force during subsequent driver IC binding. In addition, these binding pads have electrical properties to avoid material waste. The wiring efficiency can also be improved due to the lack of obstruction by the dummy pads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a binding pad distribution diagram of a driver IC in the prior art.

[0019] Figure 2The utility model provides a structural schematic diagram of a narrow-frame liquid crystal display screen which is convenient for display panel wiring.

[0020] Figure 3 for Figure 2 Binding pad distribution diagram of the driver IC.

[0021] Figure 4 for Figure 3 Schematic diagram of the improved structure.

[0022] Figure 5 for Figure 2 Another binding pad distribution diagram of a driver IC.

[0023] Figure 6 for Figure 5 Schematic diagram of the improved structure.

[0024] Figure 7 for Figure 2 Schematic diagram of the structure of FPC.

[0025] Figure 8 for Figure 2 Schematic diagram of the structure of the middle cover.

[0026] Fig. 9 for Figure 8 Schematic diagram of the decomposition structure.

[0027] Fig.10 for Figure 8 Schematic diagram of the improved structure.

[0028] Description of Figure Numbers:

[0029] Lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; cover plate 5; FPC 6; driver IC 7; binding Pad 71;

[0030] Base material layer 61; circuit layer 62; metal heat dissipation layer 63; through hole 64;

[0031] Plastic layer 8; groove 51. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] The utility model provides a narrow-frame liquid crystal display screen that is convenient for display panel wiring, which comprises a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate that are sequentially stacked from bottom to top, wherein the lower substrate is longer than the upper substrate and extends outward to form a step, an upper surface of the lower substrate located at the step is bound with an FPC and a driver IC, and the driver IC is provided with three rows of pad groups with electrical properties sequentially arranged from top to bottom, each row of the pad groups is composed of a plurality of bound pads that are sequentially arranged, and the binding P in the middle part of the first row of the pad groups is The binding positions of the binding pads are arranged horizontally, the binding positions of the binding pads on both sides of the middle part of the pad group in the first row decrease sequentially from the inside to the outside, the binding positions of the binding pads on both side edges of the pad group in the first row are flush with the binding positions of the binding pads in the middle part, the binding positions of the binding pads in the middle part of the pad in the second row are arranged horizontally, the binding positions of the binding pads on both sides of the middle part of the pad group in the second row decrease sequentially from the inside to the outside, and the binding pads of the pad group in the third row are arranged in the middle and are arranged horizontally.

[0036] Since the binding positions of the binding pads on both side edges of the first row of pad groups are flush with the binding positions of the binding pads in the middle part, the dummy pads without electrical properties are deleted on the basis of the prior art, and the effective binding pads on both side edges are moved upward and kept flush with the binding positions of the binding pads in the middle part, thereby increasing the binding force to provide physical support, which can prevent overall uneven force during subsequent driver IC binding. In addition, these binding pads have electrical properties to avoid material waste. The wiring efficiency can also be improved due to the lack of obstruction by the dummy pads.

[0037] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0038] Example 1

[0039] See also Figure 2 and Figure 3, a narrow-frame liquid crystal display screen that is convenient for display panel wiring provided by the utility model, comprising a lower polarizer 1, a lower substrate 2, an upper substrate 3, an upper polarizer 4 and a cover plate 5 that are sequentially stacked from bottom to top, the lower substrate 2 is longer than the upper substrate 3 and extends outward to form a step, the upper surface of the lower substrate 2 located at the step is bound with an FPC 6 and a driver IC 7, and the driver IC 7 is provided with three rows of Pad groups with electrical properties sequentially arranged from top to bottom, each row of the Pad group is composed of a plurality of binding Pads 71 ​​that are arranged in sequence, and the binding P in the middle part of the first row of the Pad group The binding position of ad71 is set horizontally, the binding positions of the binding Pad71 on both sides of the middle part of the Pad group in the first row decrease sequentially from the inside to the outside, the binding positions of the binding Pad71 on both side edges of the Pad group in the first row are flush with the binding position of the binding Pad71 in the middle part, the binding position of the binding Pad71 in the middle part of the second row is set horizontally, the binding positions of the binding Pad71 on both sides of the middle part of the Pad group in the second row decrease sequentially from the inside to the outside, and the binding Pad71 of the Pad group in the third row is located in the middle and is set horizontally. Since the binding positions of the binding Pad 71 on both side edges of the first row of Pad groups are flush with the binding positions of the binding Pad 71 in the middle part, the Dummy Pad without electrical properties is deleted on the basis of the prior art, and the effective binding Pad 71 on both side edges is moved upward and kept flush with the binding position of the binding Pad 71 in the middle part, thereby increasing the binding force to provide physical support, which can prevent the overall uneven force that occurs when the subsequent driver IC7 is bound. Moreover, these binding Pads 71 ​​have electrical properties to avoid material waste. Also, due to the lack of obstruction by the Dummy Pad, the wiring efficiency can be improved.

[0040] See also Figure 3 Furthermore, the binding positions of the binding Pads 71 ​​at both sides of the first row of Pad groups are sequentially increased from the inside to the outside, and the binding position of the binding Pad 71 at the end is flush with the binding position of the binding Pad 71 in the middle. Figure 4 More preferably, the binding Pad 71 on both side edges of the first row of Pad groups can rise sequentially from the inside to the outside at intervals, and the binding Pad 71 in other interval parts can descend sequentially from the inside to the outside like the binding Pad 71 on both sides of the middle part of the first row of Pad groups.

[0041] See also Figure 5 Further, the binding positions of the binding Pad 71 at both side edges of the first row of Pad groups are horizontally arranged and flush with the binding position of the binding Pad 71 in the middle portion. Figure 6More preferably, the binding Pads 71 ​​on both side edges of the first row of Pad groups can be arranged horizontally at intervals, and the binding Pads 71 ​​in other interval parts can be sequentially descended from the inside to the outside like the binding Pads 71 ​​on both sides of the middle part of the first row of Pad groups.

[0042] Example 2

[0043] See also Figure 7 As a further optimization scheme of Example 1, in this embodiment, the FPC6 includes a substrate layer 61, a circuit layer 62 arranged on the upper surface of the substrate layer 61, and a metal heat dissipation layer 63 arranged on the lower surface of the substrate layer 61. The arrangement method can be that the circuit layer 62 and the metal heat dissipation layer 63 are respectively attached to the substrate layer 61 by double-sided adhesive. Since the thickness of the substrate layer 61 is relatively thin, the heat on the FPC6 can be diffused to the metal heat dissipation layer 63 through the substrate layer 61. The metal heat dissipation layer 63 can effectively increase the heat dissipation area of ​​the FPC6 and play a role in uniform heat dissipation, thereby improving the heat dissipation efficiency of the FPC6. The substrate layer 61 can be any one of polyimide, polyester, polysulfone or polytetrafluoroethylene, the double-sided adhesive is any one of an acrylic adhesive layer or an epoxy resin adhesive layer, and the metal heat dissipation layer 63 can be a copper foil layer.

[0044] Furthermore, the FPC 6 also includes at least one through-hole 64 penetrating the substrate layer 61, the circuit layer 62 and the metal heat dissipation layer 63, and the inner wall of the through-hole 64 is provided with a heat-conducting layer in contact with the circuit layer 62 and the metal heat dissipation layer 63. By utilizing the good thermal conductivity of the through-hole 64, the circuit layer 62 and the metal heat dissipation layer 63 on both sides of the substrate layer 61 can be electrically connected to play a good thermal conductivity function, and the thermal conductive layer can provide a thermal conductive function to achieve a good heat dissipation effect. Among them, the thermal conductive layer can be a copper glue conductive ink layer.

[0045] Furthermore, a heat conductor connected to an external heat-conducting structure is disposed in the through hole 64. The heat conductor is connected to the external heat-conducting structure from one side of the circuit layer 62 and is also in contact with the heat-conducting layer in the through hole 64, so that the circuit layer 62 and the metal heat dissipation layer 63 can be connected to the external heat-conducting structure through the through hole 64, so that the heat in the FPC 6 can be diffused to the external heat-conducting structure through the heat conductor in the through hole 64, so as to further improve the heat dissipation efficiency of the FPC 6. Preferably, in order to enable the through hole 64 to be connected to the external heat-conducting structure, the through hole 64 is disposed at the edge of the FPC 6.

[0046] Furthermore, the metal heat dissipation layer 63 is a uniform heat dissipation structure, and its structure can be any one of a mesh structure, a strip structure, a wavy structure or a honeycomb structure. Through the uniform heat dissipation structure, the heat dissipation effect can be better improved.

[0047] Example 3

[0048] See also Figures 8 to 10 As a further optimization scheme of Example 1, in this embodiment, the upper surface of the cover plate 5 is covered with a plastic layer 8, and a plurality of grooves 51 are formed downward on the upper surface of the cover plate 5 by etching, and a portion of the lower surface of the plastic layer 8 is embedded in each groove 51. Since the surface of the groove 51 formed by etching has a certain degree of roughness, the plastic layer 8 can be tightly bonded to the groove 51 to prevent the cover plate 5 and the plastic layer 8 from falling off. Since the upper part of the cover plate 5 is covered with a plastic layer 8, and a plurality of grooves 51 are formed on the upper surface of the cover plate 5 by etching, and the plastic layer 8 can be embedded in the interior of the plurality of grooves 51, the grooves 51 formed by etching make the inner surface of the grooves 51 have a certain degree of roughness, and the surface of the grooves 51 with a certain degree of roughness can improve the bonding force between the grooves 51 and the plastic layer 8, thereby reducing the possibility of separation of the grooves 51 and the plastic layer 8. When the LCD screen is hit or falls, the plastic layer 8 on the upper surface of the cover plate 5 can directly withstand the external force, thereby preventing the external force from directly acting on the cover plate 5. Since the plastic layer 8 can absorb most of the energy, the remaining external force is very weak when it acts on the cover plate 5, thereby effectively reducing the risk of the cover plate 5 being broken or damaged; and when the LCD screen is subjected to external force, even if the external force is large, it will only damage the plastic layer 8 on the upper surface of the cover plate 5, and will not directly damage the cover plate 5, thereby preventing the cover plate 5 from being damaged and causing the LCD screen to be unable to be used normally, thereby bringing a better user experience to users and improving the anti-fall ability of the LCD screen.

[0049] Furthermore, the shape of the groove 51 can be square or circular, and the cross-sectional shape of the groove 51 can be a closing groove that is narrow on the outside and wide on the inside. In the present embodiment, the cross-sectional shape of the groove 51 is an isosceles trapezoid, and the groove 51 is in the shape of an elongated strip. The isosceles trapezoid-shaped groove 51 can allow the plastic layer 8 to be tightly embedded in the groove 51, thereby preventing the groove 51 from separating from the plastic layer 8, thereby preventing the cover plate 5 from falling off from the plastic layer 8. The elongated groove 51 can increase the fitting portion between the plastic layer 8 and the groove 51, thereby increasing the fitting strength between the groove 51 and the plastic layer 8.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A narrow-frame liquid crystal display screen that facilitates display panel wiring, characterized in that: It includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top, the lower substrate is longer than the upper substrate and extends outward to form a step, the upper surface of the lower substrate located at the step is bound with an FPC and a driver IC, and the driver IC is provided with three rows of Pad groups with electrical properties which are arranged in sequence from top to bottom, each row of the Pad groups is composed of a plurality of binding Pads which are arranged in sequence, the binding positions of the binding Pads in the middle part of the first row of the Pad groups are horizontally arranged, the binding positions of the binding Pads on both sides of the middle part of the first row of the Pad groups are sequentially decreased from inside to outside, the binding positions of the binding Pads on both sides of the edge of the first row of the Pad groups are flush with the binding positions of the binding Pads in the middle part, the binding positions of the binding Pads in the middle part of the second row of the Pads are horizontally arranged, the binding positions of the binding Pads on both sides of the middle part of the second row of the Pad groups are sequentially decreased from inside to outside, and the binding Pads of the third row of the Pad groups are arranged in the middle and are horizontally arranged.

2. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 1, characterized in that: The binding positions of the binding pads at both side edges of the pad group in the first row rise sequentially from the inside to the outside, and the binding position of the binding pad at the very end is flush with the binding position of the binding pad in the middle part.

3. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 1, characterized in that: The binding positions of the binding Pads at both side edges of the Pad group in the first row are horizontally arranged and flush with the binding positions of the binding Pads in the middle portion.

4. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 1, characterized in that: The FPC includes a substrate layer, a circuit layer disposed on an upper surface of the substrate layer, and a metal heat dissipation layer disposed on a lower surface of the substrate layer.

5. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 4, characterized in that: The FPC further includes at least one through-hole penetrating the substrate layer, the circuit layer and the metal heat dissipation layer, and an inner wall of the through-hole is provided with a heat-conducting layer in contact with the circuit layer and the metal heat dissipation layer.

6. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 5, characterized in that: A heat conductor connected to an external heat-conducting structure is arranged in the through hole, and the heat conductor is in contact with the heat-conducting layer.

7. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 4, characterized in that: The structure of the metal heat dissipation layer is a mesh structure, a strip structure, a wave structure or a honeycomb structure.

8. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 1, characterized in that: A plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

9. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 8, characterized in that: The groove is a closing groove which is narrow outside and wide inside.

10. The narrow-framed liquid crystal display screen that facilitates display panel wiring according to claim 8, characterized in that: The groove is in the shape of an elongated strip.

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