Pin interface structure of liquid crystal display (LCD)

Abstract

The utility model discloses a liquid crystal display (LCD) pin interface structure, which comprises an LCD module, a printed circuit board (PCB) and a zebra strip, an indium tin oxide (ITO) pin is arranged on the LCD module, a circuit board contact matched with the ITO pin is arranged on the PCB, the ITO pin and the circuit board contact are electrically connected through the zebra strip, the ITO pin is composed of a plurality of adjacent pin strips, and the pin strips are connected with the circuit board contact through the zebra strip. Each pin strip is composed of a pin area and a filling area which are distributed at the two ends of the pin strip, the width of the pin area is smaller than or equal to that of the pin strip, the pin area is electrically connected with the LCD module, and the pin areas on the adjacent pin strips are arranged in a staggered mode; according to the utility model, the width of the contact position is increased on the premise of keeping PITCH unchanged, so that the assembly tolerance is improved, the alignment difficulty is reduced, the dependence on precision equipment is reduced during assembly, and the effective contact area is still kept while the size of the LCD is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to LCD liquid crystal display screen technical field especially relates to a LCD liquid crystal display screen pin interface structure. BACKGROUND

[0002] With the enhancement of the miniaturization trend of electronic equipment, small size LCD modules (such as smart watches, micro sensors, etc.) are increasingly widely used. Such LCDs are usually connected with PCBs through Zebra strips, and the elasticity of the conductive adhesive layer is used to realize the conduction of ITO (indium tin oxide) pins and PCB pads.

[0003] For example, a fixing structure of a liquid crystal screen and a PCB, with publication number CN204758963U, includes a mounting base plate, a liquid crystal screen, an installation window is formed on the mounting base plate, the liquid crystal screen is arranged in the installation window, a PCB circuit board is arranged above the liquid crystal screen, a Zebra strip is arranged between the contact points of the PCB circuit board and the contact points of the liquid crystal screen, the upper surface of the Zebra strip is higher than the upper surface of the liquid crystal screen, frame plates are arranged on the left and right sides or the left, right and front three sides of the PCB circuit board and are connected with the mounting base plate, the part of the frame plates above the PCB circuit board is provided with a limiting part extending horizontally inward, and the limiting part is in contact with the upper surface of the PCB circuit board. When the Zebra strip is connected with the contact points of the PCB circuit board and the contact points of the liquid crystal screen, multiple intervals are usually designed, as shown in the description attached Figure 1 and Figure 2 As shown, the ITO pins 4 on the LCD module 1 are connected with the Zebra strip 3, the bottom of the Zebra strip 3 is connected with the circuit board contact points 5 on the PCB 2, and the purpose of electrically connecting the LCD module 1 with the PCB 2 is achieved. When a small size LCD is needed, the size of the ITO pins 4 is relatively small, thereby affecting the docking accuracy with the circuit board contact points 5 and increasing the installation difficulty. Utility model content

[0004] Therefore, it is necessary to provide an LCD liquid crystal display screen pin interface structure to increase the contact width under the premise of keeping the PITCH unchanged, thereby improving the assembly tolerance and reducing the alignment difficulty, reducing the dependence on precision equipment during assembly, and maintaining the effective contact area while reducing the size of the LCD.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides a LCD liquid crystal display screen pin interface structure, include: LCD module, PCB board and zebra strip, be provided with ITO pin on the LCD module, be provided with circuit board contact point with ITO pin matching on the PCB board, ITO pin and circuit board contact point are connected by zebra strip, ITO pin is composed of a plurality of adjacent pin strip, every pin strip is composed of pin area and filling area distribution in its both ends, the width of pin area is less than or equal to the width of pin strip, pin area is connected with LCD module, and pin area on adjacent pin strip is staggered arrangement.

[0007] As a preferred embodiment of the LCD liquid crystal display screen pin interface structure provided by the utility model, the pin area is square or quasi-square, and the pin area width is greater than or equal to 80% of the pin strip width.

[0008] As a preferred embodiment of the LCD liquid crystal display screen pin interface structure provided by the utility model, the quasi-square is a rounded square, and the rounded radius is 5%-15% of the pin area side length.

[0009] As a preferred embodiment of the LCD liquid crystal display screen pin interface structure provided by the utility model, the contact surface of the pin area on the pin strip is provided with a micro-protruding structure.

[0010] As a preferred embodiment of the LCD liquid crystal display screen pin interface structure provided by the utility model, the edge of the pin strip is provided with an anti-offset groove, and the corresponding position of the circuit board contact point is provided with a protruding limiting structure.

[0011] As a preferred embodiment of the LCD liquid crystal display screen pin interface structure provided by the utility model, the PCB board is provided with a locking structure on both sides of the circuit board contact point, the locking mechanism comprises a limiting seat fixed on the surface of the PCB board, a horizontal limiting block above the limiting seat, and an external elastic block installed between the horizontal limiting block and the limiting seat, the limiting seat is used for limiting the side edge of the zebra strip, one side of the external elastic block close to the circuit board contact point is fixed with an elastic top strip, and the end of the elastic top strip extends into the mounting position of the zebra strip.

[0012] As a preferred embodiment of the LCD liquid crystal display screen pin interface structure provided by the utility model, the external elastic block and the horizontal limiting block are fixed on the side away from the circuit board contact point, and the top of the horizontal limiting block is inclined to one side of the circuit board contact point.

[0013] In a preferred embodiment of the LCD pin interface structure provided by this utility model, the front end of the elastic top bar is an arc-shaped structure, the outer elastic block is made of elastic rubber, and the outer elastic block is a hollow structure.

[0014] In a preferred embodiment of the LCD pin interface structure provided by this utility model, a gap is provided between the upper end of the elastic top bar and the lower end of the transverse limiting block.

[0015] In a preferred embodiment of the LCD pin interface structure provided by this utility model, a longitudinal limiting block corresponding to the side of the zebra stripe is fixed on the side of the limiting seat. The longitudinal limiting block is used to limit the side of the zebra stripe.

[0016] Compared with the prior art, the present invention has the following advantages: The ITO pins on the LCD module are connected to the circuit board contacts on the PCB board via zebra strips to realize the installation of the LCD module. By setting the ITO pins into multiple staggered pin areas, the width of each pin area is increased, which facilitates the connection with the corresponding circuit board contacts via zebra strips. While keeping the PITCH unchanged, the contact width is increased, thereby improving the assembly tolerance and reducing the alignment difficulty. During assembly, the dependence on precision equipment is reduced, and the effective contact area is maintained while reducing the size of the LCD. Attached Figure Description

[0017] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the installation of an LCD module and a PCB board in the prior art;

[0019] Figure 2 This is a schematic diagram of the LCD module and ITO pin structure in the prior art;

[0020] Figure 3 Exploded view of the LCD module and PCB board provided by this utility model;

[0021] Figure 4 A schematic diagram of the LCD module and ITO pin structure provided by this utility model;

[0022] Figure 5 A schematic diagram of the PCB board and locking structure provided by this utility model;

[0023] Figure 6 The schematic diagram of the zebra strip mounting structure is provided.

[0024] The marks in the figure are explained as follows:

[0025] 1, LCD module; 2, PCB board; 3, zebra strip; 4, ITO pin; 5, circuit board contact; 6, pin area; 7, filling area; 8, horizontal limiting block; 9, vertical limiting block; 10, limiting seat; 11, outer elastic block; 12, elastic top strip; 13, pin strip. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0027] As described in the background, when a small size LCD is needed, the ITO pin size is relatively small, thereby affecting the docking accuracy with the circuit board contact, resulting in increased installation difficulty.

[0028] In order to solve this technical problem, the present application provides an LCD liquid crystal display screen pin interface structure, which is applied to the technical field of LCD liquid crystal display screens.

[0029] Specifically, please refer to Figures 3-4 An LCD liquid crystal display screen pin interface structure, comprising: an LCD module 1, a PCB board 2 and a zebra strip 3, wherein the LCD module 1 is provided with an ITO pin 4, the PCB board 2 is provided with a circuit board contact 5 matched with the ITO pin 4, the ITO pin 4 and the circuit board contact 5 are electrically connected through the zebra strip 3, the ITO pin 4 is composed of a plurality of adjacent pin strips 13, each pin strip 13 is composed of a pin area 6 and a filling area 7 distributed at both ends thereof, the width of the pin area 6 is less than or equal to the width of the pin strip 13, the pin area 6 is electrically connected with the LCD module 1, and the pin areas 6 on adjacent pin strips 13 are staggered.

[0030] The utility model provides a LCD liquid crystal display pin interface structure, LCD module 1 on ITO pin 4 is connected with the circuit board contact 5 on PCB 2 through zebra strip 3, realizes the installation to LCD module 1, through setting up the ITO pin 4 into multiple staggered design pin area 6, make every pin area 6 width increase, it is convenient to connect through zebra strip 3 with corresponding circuit board contact 5, increase the contact width under the premise of keeping PITCH, thereby promote assembly tolerance, reduce the difficulty of alignment, when assembling, reduce the dependence on precision equipment, can still keep effective contact area while reducing the size of LCD.

[0031] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings.

[0032] It should be noted that the embodiments and the features and technical solutions in the embodiments in the utility model can be combined with each other without conflict.

[0033] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0034] Embodiment one

[0035] Please refer to Figures 3-4 A LCD liquid crystal display pin interface structure, comprising: LCD module 1, PCB 2 and zebra strip 3, LCD module 1 is provided with ITO pin 4, PCB 2 is provided with circuit board contact 5 matched with ITO pin 4, ITO pin 4 and circuit board contact 5 are electrically connected through zebra strip 3, zebra strip 3 pressure bonding ITO pin 4 and circuit board contact 5, realize signal transmission, do not need to weld, the shape of zebra strip 3 and circuit board contact 5 matches the shape of ITO pin 4 on LCD module 1, facilitate assembly, ITO pin 4 is composed of multiple adjacent pin strips 13, every pin strip 13 is composed of pin area 6 and filling area 7 distributed at both ends, the width of pin area 6 is less than or equal to the width of pin strip 13, pin area 6 is electrically connected with LCD module 1, filling area 7 insulates and isolates multiple pin areas 6, avoids mutual interference, improves the stability of signal transmission, the pin area 6 on adjacent pin strip 13 is staggered, as shown in Figure 4 While the size of ITO pin 4 is constant, the width of pin area 6 can be increased, thereby improving assembly tolerance and reducing alignment difficulty. When assembling, the dependence on precision equipment is reduced.

[0036] In addition, the pin area 6 is square or quasi-square, the width of the pin area 6 is greater than or equal to 80% of the width of the pin strip 13, so that the pin contact area is square or rounded square, the contact width is increased to more than 80% of the length, the effective contact area is significantly increased, and the structure is suitable for a super small LCD module 1 with low pitch. The quasi-square is a rounded square, the radius of the rounded corner is 5%-15% of the length of the side of the pin area 6, the distance between adjacent pin areas 6 is reduced, mutual interference is avoided, signal transmission is affected, and the width of the pin area 6 is further increased, and the contact area is increased.

[0037] Embodiment two

[0038] The pin interface structure of the LCD liquid crystal display provided in embodiment one is further optimized, and specifically, as shown in Figures 5-6 The PCB 2 is provided with a locking structure on both sides of the circuit board contact 5, the locking structure includes a limiting seat 10 fixed on the surface of the PCB 2, a horizontal limiting block 8 located above the limiting seat 10, and an outer elastic block 11 installed between the horizontal limiting block 8 and the limiting seat 10. The limiting seat 10 is used for limiting the side of the zebra strip 3, and the outer elastic block 11 is fixed with an elastic top strip 12 on the side close to the circuit board contact 5. The end of the elastic top strip 12 extends into the mounting position of the zebra strip 3. When the ITO pin 4 and the circuit board contact 5 are pressed and connected by the zebra strip 3 to realize signal transmission, the zebra strip 3 is inserted between the two limiting seats 10 and is limited by the limiting seat 10 and the horizontal limiting block 8. When the zebra strip 3 is installed in a small size space, the zebra strip 3 can still be stably connected, and after the zebra strip 3 is installed, the side of the zebra strip 3 will extrude the end of the elastic top strip 12 and push the outer elastic block 11 to expand, as shown in Figure 6 The outer elastic block 11 is in an arc structure after deformation, the top of the outer elastic block 11 drives the horizontal limiting block 8 to tilt towards one side of the zebra strip 3, so that the horizontal limiting block 8 extrudes the side of the zebra strip 3, thereby locking the zebra strip 3 after installation, and providing stability for the installation of the zebra strip 3.

[0039] It is worth mentioning that the outer elastic block 11 is fixed away from the side of the circuit board contact 5 of the transverse limiting block 8, the top of the transverse limiting block 8 is inclined to one side of the circuit board contact 5, and the inclined top surface of the transverse limiting block 8 facilitates guiding when the zebra strip 3 is pressure-welded with the circuit board contact 5 on the PCB 2, so that the zebra strip 3 is more convenient and stable to install, the front end of the elastic top strip 12 is in an arc structure, the outer elastic block 11 is made of elastic rubber material, the outer elastic block 11 is in a hollow structure, the outer elastic block 11 has a certain elasticity, when being extruded, the side of the outer elastic block 11 close to the elastic top strip 12 is extruded and deformed, the distance between the inner side upper and lower end surfaces of the outer elastic block 11 is reduced, and the outer side of the outer elastic block 11 is in an outward convex arc deformation, so that the top surface of the outer elastic block 11 drives the transverse limiting block 8 to incline to one side of the zebra strip 3, and the zebra strip 3 is locked.

[0040] In addition, a gap is formed between the upper end of the elastic top strip 12 and the lower end of the transverse limiting block 8, so that the transverse limiting block 8 has a certain movement space when inclining to the inner side, and the zebra strip 3 is better locked, the side surface of the limiting seat 10 is fixed with a longitudinal limiting block 9 corresponding to the side surface of the zebra strip 3, and the longitudinal limiting block 9 is used for limiting the side surface of the zebra strip 3, so that the zebra strip 3 and the side surface adjacent to the transverse limiting block 8 are limited by arranging the longitudinal limiting block 9, and the installation efficiency and stability of the zebra strip 3 are further improved.

[0041] Example three

[0042] The LCD liquid crystal display screen pin interface structure provided in example one or two is further optimized, specifically, the contact surface of the pin area 6 on the pin strip 13 is provided with a micro-protruding structure, the edge of the pin strip 13 is provided with an anti-offset groove, and the corresponding position of the circuit board contact 5 is provided with a protruding limiting structure, the micro-protruding structure or the edge groove is arranged on the pin surface, the limiting design of the PCB pad is combined, offset in the assembly or use process is prevented, vibration resistance is enhanced, and the contact failure rate is reduced.

[0043] The use process of the LCD liquid crystal display screen pin interface structure is as follows: when the LCD module 1 and the PCB 2 are assembled, the ITO pin 4 is pressure-welded and conducted through the zebra strip 3, the plurality of pin areas 6 are designed to be staggered, the width of each pin area 6 is increased, the contact bit width is increased under the premise that the PITCH is unchanged, the assembly tolerance is improved, the dependence on precision equipment is reduced, the effective contact area can be maintained while the LCD size is reduced.

[0044] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the above-mentioned term in the utility model concrete meaning according to specific circumstances.

[0045] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and not all the embodiments, the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model.The utility model can be realized in many different forms, and contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent replacement to part of the technical features.For equivalent structure made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the utility model.

Claims

1. A pin interface structure for an LCD display screen, comprising: An LCD module, a PCB board, and a zebra stripe are characterized in that the LCD module is provided with ITO pins, the PCB board is provided with circuit board contacts that match the ITO pins, the ITO pins and the circuit board contacts are electrically connected through the zebra stripe, the ITO pins are composed of multiple adjacent pin strips, each pin strip is composed of pin areas and fill areas distributed at both ends of it, the width of the pin area is less than or equal to the width of the pin strip, the pin area is electrically connected to the LCD module, and the pin areas on adjacent pin strips are staggered.

2. The LCD pin interface structure according to claim 1, characterized in that, The pin area is square or near-square, and the width of the pin area is greater than or equal to 80% of the width of the pin strip.

3. The LCD pin interface structure according to claim 2, characterized in that, The square-like shape is a rounded square, with a corner radius of 5%-15% of the side length of the pin area.

4. The LCD pin interface structure according to claim 1, characterized in that, The contact surface of the pin area on the pin bar has a micro-protrusion structure.

5. The LCD pin interface structure according to claim 4, characterized in that, The edge of the pin bar is provided with an anti-displacement groove, and the corresponding position of the circuit board contact is provided with a raised limiting structure.

6. The LCD pin interface structure according to claim 1, characterized in that, The PCB board is provided with locking structures on both sides of the circuit board contact. The locking structure includes a limiting seat fixed to the surface of the PCB board, a lateral limiting block located above the limiting seat, and an external elastic block installed between the lateral limiting block and the limiting seat. The limiting seat is used to limit the side of the zebra strip. An elastic top strip is fixed on the side of the external elastic block near the circuit board contact, and the end of the elastic top strip extends into the mounting position of the zebra strip.

7. The LCD pin interface structure according to claim 6, characterized in that, The outer elastic block is fixed to the side of the lateral limiting block away from the circuit board contact, and the top of the lateral limiting block is inclined toward the side of the circuit board contact.

8. The LCD pin interface structure according to claim 6, characterized in that, The front end of the elastic top strip has an arc-shaped structure, the outer elastic block is made of elastic rubber, and the outer elastic block has a hollow structure.

9. The LCD pin interface structure according to claim 8, characterized in that, A gap is provided between the upper end of the elastic top bar and the lower end of the transverse limiting block.

10. The LCD pin interface structure according to claim 6, characterized in that, The side of the limiting seat is fixed with a longitudinal limiting block corresponding to the side of the zebra stripe, and the longitudinal limiting block is used to limit the side of the zebra stripe.

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