Motorcycle instrument equipment with double-layer ITO (Indium Tin Oxide) structure

Abstract

The motorcycle instrument equipment with the double-layer ITO structure comprises a liquid crystal screen, and the liquid crystal screen comprises a cover plate, an upper polaroid, a double-face ITO layer, a liquid crystal structure layer, a lower ITO wiring layer, a lower glass substrate, a lower polaroid and a color film which are sequentially arranged from top to bottom; oCA glue is filled between the upper polaroid and the cover plate to form an OCA layer; the double-sided ITO layer comprises an ITO electrostatic layer, an upper glass substrate and an upper ITO wiring layer which are sequentially arranged from top to bottom, one side of the lower ITO wiring layer extends out of the liquid crystal structure layer, conductive pins are communicated between the ITO electrostatic layer and the lower ITO wiring layer, the lower glass substrate is connected with a PCB of motorcycle instrument equipment through an FPC, and the lower glass substrate is connected with the PCB of the motorcycle instrument equipment through the FPC. And static electricity is conducted to the grounding end of the PCB through the FPC. The antistatic performance can be improved, and the display effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of instrument equipment, and in particular to a motorcycle instrument equipment with a double-layer ITO structure. Background Art

[0002] The LCD screen is a common component of motorcycle instrument equipment. During use, the LCD screen may rub against other materials (such as cleaning cloths, fingers, dust, etc.) and generate static electricity. In addition, there are drive circuits and high-voltage power supplies inside the LCD screen. These circuits may generate electromagnetic fields when working, resulting in uneven charge distribution and static electricity. If the static electricity cannot be released in time, the liquid crystal molecules in the liquid crystal box will twist due to the influence of static electricity, causing the display content of the liquid crystal display to be disordered. Therefore, a motorcycle instrument equipment with high antistatic performance is urgently needed. Summary of the invention

[0003] The present invention aims to solve the technical problems existing in the prior art, and in particular innovatively proposes a motorcycle instrument device with a double-layer ITO structure, which can improve the antistatic performance and the display effect.

[0004] In order to achieve the above-mentioned object, the present invention provides a motorcycle instrument device with a double-layer ITO structure, including a liquid crystal screen, wherein the liquid crystal screen includes a cover plate, an upper polarizer, a double-sided ITO layer, a liquid crystal structure layer, a lower ITO wiring layer, a lower glass substrate, a lower polarizer and a color film arranged in sequence from top to bottom; OCA glue is filled between the upper polarizer and the cover plate to form an OCA layer;

[0005] The double-sided ITO layer includes an ITO electrostatic layer, an upper glass substrate, and an upper ITO wiring layer which are arranged in sequence from top to bottom. One side of the lower ITO wiring layer extends outside the liquid crystal structure layer. A conductive pin is connected between the ITO electrostatic layer and the lower ITO wiring layer. The lower glass substrate is connected to the PCB board of the motorcycle instrument equipment through an FPC, and static electricity is introduced to the ground terminal of the PCB board through the FPC.

[0006] In the above scheme: the liquid crystal structure layer includes PI alignment layers arranged at intervals up and down, and a circle of edge glue is arranged around the two layers of the PI alignment layers, and the edge glue is used to seal the two layers of the PI alignment layers, so that a cavity is left in the two layers of the PI alignment layers, and the cavity is filled with liquid crystal to form a liquid crystal layer, thereby ensuring the stability of the liquid crystal structure layer.

[0007] In the above scheme: the cavity is also filled with an antistatic agent to effectively reduce the accumulation and discharge of static electricity and further improve the antistatic performance.

[0008] In the above scheme: the conductive pin is made of silver paste, which is conductive and can improve the conductive effect, thereby ensuring that the static electricity generated on the surface of the cover plate can be effectively introduced into the FPC as much as possible.

[0009] In the above scheme: one side of the lower glass substrate extends outside the lower ITO wiring layer, and an IC is arranged on the portion of the lower glass substrate outside the lower ITO wiring layer and connected to the FPC, which facilitates the connection with the FPC and improves the installation stability of the FPC.

[0010] In summary, the beneficial effects of the present invention are as follows: the conductive pins provided can form an electrical path between the FPC and the ITO electrostatic layer. Combined with the provided ITO electrostatic layer, it has good conductivity, and can conduct the static electricity generated on the surface of the cover plate through the OCA adhesive layer, the upper polarizer, the ITO electrostatic layer and into the FPC in sequence through the conductive pins, thereby flowing into the GND end of the PCB through the FPC base. Since the GND end of the PCB board is connected to the GND of the vehicle wiring harness through the connector, the static electricity will flow to the GND end of the vehicle through the connector to release the static electricity. The structure is simple, and it can avoid the transmission of static electricity into the liquid crystal structure layer as much as possible. Even when static electricity is generated on the surface of the cover plate, the liquid crystal surface will not have the previous screen-staining situation, thereby improving the anti-static performance and ensuring the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional schematic diagram of the present invention Figure 1 .

[0012] Figure 2 A three-dimensional schematic diagram of the present invention Figure 2 .

[0013] Figure 3 For the purpose of illustrating the present invention Figure 1 .

[0014] Figure 4 For the purpose of illustrating the present invention Figure 2 .

[0015] Figure 5 It is a schematic diagram of the upper cover in the present invention.

[0016] Figure 6 Schematic diagram of the bottom shell of the present invention.

[0017] Figure 7 It is a schematic diagram of the support member in the present invention.

[0018] Figure 8 is a schematic diagram of a backlight assembly in the present invention.

[0019] Fig. 9 It is a schematic structural diagram of a liquid crystal screen of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0021] like Figures 1 to 9 As shown, a motorcycle instrument device with a double-layer ITO structure is composed of an instrument body and a backlight assembly, wherein the instrument body includes a liquid crystal screen 1, an upper cover 2 and a bottom shell 3, the liquid crystal screen 1 is used to display operating parameters, the upper cover 2 and the bottom shell 3 are arranged up and down, and the backlight assembly and the liquid crystal screen 1 are both arranged in the bottom shell 3 through a mounting structure, and a display glass 4 for liquid crystal display is arranged on the upper cover 2, and the display glass is glass silk-screen.

[0022] The backlight assembly includes a PCB board 5, a light guide plate 6, a light guide plate support 7 and a light homogenizer 8, and the light homogenizer 8, the light guide plate 6, the light guide plate support 7 and the PCB board 5 are arranged in sequence below the liquid crystal screen 1, and one end of the light guide plate 6 is set as an arc-shaped light guide end 6a extending toward the light guide plate support 7, and the light guide end 6a is located outside the light guide plate support 7. At the same time, a backlight light source that can directly illuminate the light guide end 6a is arranged on the PCB board 5. Preferably, the backlight light source is an LED lamp.

[0023] The backlight source directly shines on the light guide end, and then the light is refracted and reflected in the light guide plate. Since the light guide plate is provided with an arc-shaped light guide end, the light can cover the entire light guide plate. Finally, under the action of the light uniformity sheet, the light projected onto the LCD screen is guaranteed to be uniform.

[0024] To reduce the loss of light energy, the thickness of the light guide plate 6 gradually decreases from one side of the light guide end to the other side. Preferably, the light guide end is arranged at the front side. To facilitate the processing of the light guide plate, the light guide plate 6 is made of PMMA material, that is, organic glass.

[0025] The mounting structure includes a support member 10 disposed in the bottom shell 3, a rectangular cavity for installing the LCD screen 1, the light homogenizer 8, the light guide plate 6, and the light guide plate support 7 is disposed in the support member 10, and limiting columns 10a for limiting the upward movement of the LCD screen are disposed on the four sides of the cavity, and the PCB board 5 is disposed on the support member 10 and located at the lower end of the cavity, that is, the LCD screen 1, the light homogenizer 8, the light guide plate 6, and the light guide plate support 7 are disposed in the cavity through the limiting columns and the PCB board. Preferably, two limiting columns are disposed at intervals on each side of the cavity.

[0026] To facilitate the installation of the PCB board, a positioning column 10b is provided on the bottom surface of the support member 10, and a positioning notch 5a is correspondingly provided on the PCB board. To achieve the installation of the light-homogenizing sheet, a light-homogenizing positioning hole 8a for installing the light-homogenizing sheet is provided on the light-homogenizing sheet 8, and a light-homogenizing positioning column 10d capable of passing through the light-homogenizing positioning hole is provided on the support member 10. Preferably, the light-homogenizing positioning hole is provided on the ear of the light-homogenizing sheet, and at least two light-homogenizing positioning holes are provided. When two light-homogenizing positioning holes are provided, the two light-homogenizing positioning holes are provided on two non-adjacent sides, and the two light-homogenizing positioning holes are not provided in an axisymmetric manner.

[0027] To ensure the installation of the light guide plate, a positioning block 7a is provided on the light guide plate support 7, a positioning groove 10e corresponding to the positioning block is provided on the support member 10, and positioning blocks are provided on the four sides of the light guide plate support block.

[0028] A menu button 11 and a setting button 12 for adjusting the displayed content are arranged outside the instrument body. Preferably, the LCD screen is arranged higher than the supporting member, and an operating hole for the menu button and the setting button to extend out is arranged on the upper cover.

[0029] In order to achieve the sealing between the upper cover and the bottom shell, a multi-layer step sealing structure is adopted between the upper cover 2 and the bottom shell 3, and a sealing ring 9 is arranged in the inner layer. The multi-layer step sealing structure specifically includes an inner layer protrusion 3a arranged on the bottom shell 3 and an outer layer protrusion 3b arranged on the bottom shell 3, a middle layer groove 3c is arranged between the inner layer protrusion 3a and the outer layer protrusion 3b, and the height of the inner layer protrusion 3a is greater than the height of the outer layer protrusion 3b, and at the same time, a step with a lower outer side and a higher inner side is arranged on the end face of the outer layer protrusion 3b, an inner layer groove 2a for the inner layer protrusion 3a to be inserted, a middle layer protrusion 2b that can be inserted into the middle layer groove 3c, and a matching protrusion 2c that matches the outer layer protrusion 3b, and a spacing is left between the middle layer protrusion and the outer layer protrusion, and the sealing ring 9 is arranged in the inner layer groove 2a, and a small protrusion for limiting the sealing ring is arranged in the inner layer groove. Preferably, a supporting rib is arranged between the middle layer protrusion 2b and the matching protrusion 2c. This structure can effectively prevent water from entering the instrument body.

[0030] A vent hole is provided below the bottom shell 3, and a waterproof breathable membrane 13 is provided in the vent hole to prevent water from entering. To facilitate the installation of the waterproof breathable membrane, a breathable column is provided in the bottom shell, and the vent hole is provided in the breathable column. At the same time, a waterproof connector 14 for data or power input and output is provided on the bottom shell 3.

[0031] In order to realize the installation between the support member 10 and the bottom shell 3, a support positioning column 3d is provided on the bottom shell 3, and a support positioning hole 10c for the support positioning column to pass through is provided on the support member 10, and the mounting bolts between the bottom shell and the upper cover pass through the support member, thereby reducing the setting of the mounting bolts. In order to facilitate the installation of the entire instrument, a mounting nut is embedded on the bottom surface of the bottom shell.

[0032] The liquid crystal screen 1 includes a cover plate 101, an upper polarizer 103, an ITO electrostatic layer 104, an upper glass substrate 105, an upper ITO wiring layer 106, a liquid crystal structure layer, a lower ITO wiring layer 110, a lower glass substrate 111, a lower polarizer 117 and a color filter 112, which are arranged in sequence from top to bottom. Among them, OCA glue is filled between the upper polarizer 103 and the cover plate 101 to form an OCA layer 102.

[0033] One side of the lower ITO wiring layer 110 extends outside the liquid crystal structure layer, and a conductive pin 114 is connected between the ITO electrostatic layer 104 and the lower ITO wiring layer 110. The conductive pin 114 of this embodiment is made of silver paste, which is conductive and can improve the conductive effect, and ensure that the static electricity generated on the surface of the cover plate 101 can be effectively introduced into the FPC 116 as much as possible.

[0034] The lower glass substrate 111 is connected to the PCB board of the motorcycle instrument equipment through FPC116, and static electricity is introduced to the ground terminal of the PCB board through FPC116. Specifically, one side of the lower glass substrate 111 extends outside the lower ITO wiring layer 110, and an IC115 is arranged on the part of the lower glass substrate 111 outside the lower ITO wiring layer 110 and connected to FPC116, so as to facilitate the connection of FPC116 and improve the installation stability of FPC116.

[0035] The liquid crystal structure layer includes PI alignment layers 107 spaced apart from each other, and a circle of edge glue 113 is arranged around the two layers of PI alignment layers 107, and the edge glue 113 is used to seal the two layers of PI alignment layers 107, so that a cavity is left in the two layers of PI alignment layers 107, and the cavity is filled with liquid crystal and static agent to form a liquid crystal layer 109. The accumulation and discharge of static electricity are effectively reduced, the antistatic performance is further improved, and the stability of the liquid crystal structure layer is guaranteed.

Claims

1. A motorcycle instrument device with a double-layer ITO structure, characterized in that: The invention comprises a liquid crystal screen, wherein the liquid crystal screen comprises a cover plate (101), an upper polarizer (103), a double-sided ITO layer, a liquid crystal structure layer, a lower ITO wiring layer (110), a lower glass substrate (1011), a lower polarizer (1017) and a color film (112) which are arranged in sequence from top to bottom; OCA glue is filled between the upper polarizer (103) and the cover plate (101) to form an OCA layer (102); The double-sided ITO layer comprises an ITO electrostatic layer (104), an upper glass substrate (105), and an upper ITO wiring layer (106) which are arranged in sequence from top to bottom; one side of the lower ITO wiring layer (110) extends outside the liquid crystal structure layer; a conductive pin (1014) is connected between the ITO electrostatic layer (104) and the lower ITO wiring layer (110); the lower glass substrate (111) is connected to a PCB board of a motorcycle instrument device via an FPC (116), and static electricity is introduced to a ground terminal of the PCB board via the FPC (116).

2. The motorcycle instrument device with a double-layer ITO structure according to claim 1, characterized in that: The liquid crystal structure layer comprises PI alignment layers (107) arranged at intervals up and down, and a circle of edge glue (113) is arranged around the two layers of the PI alignment layers (107) and sealed by the edge glue (113), so that a cavity is left in the two layers of the PI alignment layers (107), and the cavity is filled with liquid crystal to form a liquid crystal layer (109).

3. The motorcycle instrument device with a double-layer ITO structure according to claim 2, characterized in that: The cavity is also filled with an electrostatic agent.

4. The motorcycle instrument device with a double-layer ITO structure according to claim 1, characterized in that: The conductive pin (1014) is made of silver paste.

5. The motorcycle instrument device with a double-layer ITO structure according to claim 1, characterized in that: One side of the lower glass substrate (111) extends outside the lower ITO wiring layer (110); an IC (115) is arranged on a portion of the lower glass substrate (111) outside the lower ITO wiring layer (110) and is connected to an FPC (116).

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