CN217170580U - Structure for improving poor light leakage at side edge of vehicle-mounted backlight source - Google Patents

Abstract

The utility model discloses a structure for improving the poor light leakage at the side edge of a vehicle-mounted backlight source, which comprises a middle frame, a avoiding groove and a black PET Tape, wherein the Sensor Glass is positioned at the bottom of a cover plate, the TFT Glass is positioned at the bottom of the Sensor Glass, the laminating water cement is respectively and fixedly arranged between the cover plate, the Sensor Glass and the TFT Glass, a light guide plate is fixedly arranged at the top of a back plate, an optical film is fixedly arranged at the top of the light guide plate, the middle frame is fixedly arranged at the upper end of the right side of the back plate, the avoiding groove is positioned at the upper end of the left side inside the middle frame, the black PET Tape is fixedly arranged at the bottom of the TFT Glass, the other end of the black PET Tape is embedded in the avoiding groove, a touch display module of the bonding assembly mode of the laminating module and the backlight source of the TFT Panel and GG structure touch screen is adhered to the lower side of the black PET Tape, and the other end of the black PET Tape is embedded in the avoiding groove of the middle frame, the nonuniform light source refracted from a large visual angle after the backlight source is emitted to the Sensor Glass and is adhered with the water gel thickness layer can be effectively improved.

Description

Structure for improving poor light leakage at side edge of vehicle-mounted backlight source

Technical Field

The utility model relates to an automobile parts technical field especially relates to an improve the bad structure of on-vehicle backlight side light leak.

Background

In the vehicle-mounted display, as shown in fig. 1, a cross section is partially assembled in a conventional vehicle-mounted touch display module structure, and the structure of the vehicle-mounted touch display module comprises a three-in-one Glass assembly formed by attaching a cover plate, a Sensor Glass and a TFT Glass together through an OCR (optical character recognition) water glue and a backlight source assembly. The three-in-one Glass integrated Sensor Glass and the upper surface of the middle frame of the backlight are bonded and fastened together through a VHB double-sided adhesive tape.

However, with the application of more and more narrow bezel module products, the edge width of the touch screen is also reduced correspondingly. FIG. 1 is a cross-sectional view of the narrowest and widest side of a 9-inch touch display module. Through the cross-sectional structure, it can be seen that the width dimension of the effective display area edge of the TFT Glass from the outer edge thereof is only 2.0 mm; the width of the supporting surface of the middle frame of the backlight source is 2.0mm, and the Gap of the middle frame and the TFT Glass is 0.5 mm. I.e. the total width of the viewing zone edge from the edge of the module (except the cover plate) is 4.5 mm. It is due to the design of the 0.5mm assembly Gap (necessary design to prevent the TFT Glass from pressing against the middle frame due to the bonding deviation caused by the process fabrication capability and the backlight assembly deviation), that the light emitted from the backlight is reflected to the lower surface of the Sensor Glass through the middle frame. And after refraction of Sensor Glass, the black ink is ejected from the black ink opening of the cover plate.

As can be seen from FIG. 1, the light path exits between the upper polarizer of the TFT Glass and the lower surface ink opening of the cover plate, and the visible area of the light strip can be observed at a desired angle. The larger the horizontal overlapping area (light band shielding area) of the ink openings on the upper polarizer of the TFT Glass and the lower surface of the cover plate is, the smaller the thicknesses of the Sensor Glass and the adhesive water gel are, and the smaller the visual angle of the visible area of the light band is. Otherwise, the larger the size.

Because the size of the ink opening of the cover plate generally relates to the appearance, the ink opening is different from 0.5mm to 1.5mm according to the requirements of customers, the support strength of the backlight source assembly bearing surface needs to be considered in the thickness design of the Sensor, and if the Sensor Glass is too thin, the deformation of the TFT caused by touch pressure is easily caused, so that the Mura is generated on the ADS screen. Therefore, in order to overcome the above disadvantages, the most common improvement method is to apply printing ink on the lower surface of the Sensor Glass to form a shielding region with the polarizer on the TFT, and to cut off the reflected light before the refraction of the Sensor Glass, thereby improving the large-viewing-angle light leakage phenomenon. But the shortcoming is that the Sensor Glass cost of taking the ink printing promotes greatly, and the bad of Sensor printing ink can lead to trinity Glass integrated defective rate to rise, influences whole touch-sensitive screen cost, so in view of above defect, really need design one kind and improve the bad structure of vehicle backlight side light leak.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve lies in: the utility model provides a structure that the bad light leak of vehicle-mounted backlight side is improved to solve the problem that the background art provided.

In order to solve the technical problem, the technical scheme of the utility model is that: a structure for improving light leakage at the side edge of a vehicle-mounted backlight comprises a cover plate, a Sensor Glass, a TFT Glass, a bonding water gel, a back plate, a light guide plate and an optical film, and further comprises a middle frame, an avoiding groove and a black PET Tape, wherein the Sensor Glass is positioned at the bottom of the cover plate and is connected with the cover plate by pasting, the TFT Glass is positioned at the bottom of the Sensor Glass, the TFT Glass and the Sensor Glass are connected by pasting, the bonding water gel is respectively fixedly arranged between the cover plate, the Sensor Glass and the TFT Glass, the bonding water gel is respectively connected with the cover plate, the Sensor Glass and the TFT Glass by pasting, the light guide plate is fixedly arranged at the top of the back plate, the light guide plate and the back plate are connected by pasting, the optical film is fixedly arranged at the top of the light guide plate, the optical film and the light guide plate are connected by pasting, the middle frame is fixedly arranged at the upper end of the right side of the back plate, the middle frame and the back plate are connected by tight fit, dodge the trench and be located the inside left side upper end of center, the groove of dodging be the recess, black PET Tape set firmly in TFT Glass bottom, black PET Tape and TFT Glass adopt to paste and be connected, just black PET Tape other end embedding dodge inslot portion.

Further, VHB double faced adhesive tape has still set firmly on Sensor Glass bottom right side, VHB double faced adhesive tape and Sensor Glass adopt to paste to be connected, just VHB double faced adhesive tape and center adopt to paste to be connected.

Further, dodge the inside right side upper end of groove and still be equipped with the arc angle, the arc angle with dodge groove integrated into one piece.

Compared with the prior art, this improve bad structure of on-vehicle backlight side light leak, to TFT Panel and GG structure touch-sensitive screen's laminating module and backlight bonding package assembly's touch display module assembly, through at the attached black PET Tape of TFT Glass downside to the black PET Tape other end is embedded into the groove of keeping away of center, can effectively improve the backlight and jet out the inhomogeneous light source of refraction out from large-view angle department behind Sensor Glass and the laminating glue thickness layer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a conventional touch display module for a vehicle;

fig. 2 is a schematic view of a structure for improving poor light leakage at the side of a vehicle-mounted backlight source.

The LED backlight module comprises a cover plate (1), a Sensor Glass (2), a TFT Glass (3), a bonding glue (4), a back plate (5), a light guide plate (6), an optical film (7), a middle frame (8), an avoiding groove (9), a black PET Tape (10), a VHB double-sided adhesive Tape (201) and an arc angle (901).

The following detailed description will be further described in conjunction with the above-identified drawings.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the concepts underlying the described embodiments, however, it will be apparent to one skilled in the art that the described embodiments may be practiced without some or all of these specific details, and in other cases well-known process steps have not been described in detail.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in figures 1 and 2, the structure for improving the poor light leakage at the side edge of the vehicle-mounted backlight comprises a cover plate (1), a Sensor Glass (2), a TFT Glass (3), a bonding water gel (4), a back plate (5), a light guide plate (6), an optical film (7), a middle frame (8), an avoiding groove (9) and a black PET Tape (10), wherein the Sensor Glass (2) is positioned at the bottom of the cover plate (1), the Sensor Glass (2) is bonded with the cover plate (1), the TFT Glass (3) is positioned at the bottom of the Sensor Glass (2), the TFT Glass (3) is bonded with the Sensor Glass (2), the bonding water gel (4) is fixedly arranged between the cover plate (1), the Sensor Glass (2) and the TFT Glass (3), and the bonding water gel (4) is respectively bonded with the cover plate (1), the Sensor Glass (2) and the TFT Glass (3), the light guide plate (6) set firmly in backplate (5) top, light guide plate (6) adopt with backplate (5) to paste and be connected, optical film (7) set firmly in light guide plate (6) top, optical film (7) adopt with light guide plate (6) to paste and be connected, center (8) set firmly in backplate (5) right side upper end, center (8) adopt the tight fit with backplate (5) to be connected, dodge groove (9) and be located center (8) inside left side upper end, dodge groove (9) and be the recess, black PET Tape (10) set firmly in TFT Glass (3) bottom, black PET Tape (10) and TFT Glass (3) adopt to paste and be connected, just black PET Tape (10) other end embedding dodge inside groove (9);

the black PET Tape (10) is pasted on the bottom of the TFT Glass (3), the other end of the black PET Tape (10) is embedded into the avoiding groove (9) of the middle frame (8), and light emitted by the backlight source from the TFT Glass (3) and the middle frame (8) is blocked, so that an uneven light band refracted from a large visual angle after most light is reflected to the thickness layers of the Sensor Glass (2) and the adhesive (4) can be effectively improved;

a VHB double-sided adhesive tape (201) is fixedly arranged on the right side of the bottom of the Sensor Glass (2), the VHB double-sided adhesive tape (201) is connected with the Sensor Glass (2) in a sticking mode, and the VHB double-sided adhesive tape (201) is connected with the middle frame (8) in a sticking mode;

the VHB double-sided adhesive tape (201) can be used for adhering and connecting the Sensor Glass (2) and the middle frame (8), so that the middle frame (8) and the lower back plate (5) can be conveniently and tightly matched and buckled, and the mounting firmness is ensured;

an arc angle (901) is further arranged at the upper end of the right side in the avoidance groove (9), and the arc angle (901) and the avoidance groove (9) are integrally formed;

the arc angle (901) can improve the strength of the middle frame (8) and improve the support property.

Claims (3)

1. The utility model provides an improve bad structure of on-vehicle backlight side light leak, includes apron, Sensor Glass, TFT Glass, laminating glue, backplate, light guide plate and optical film, its characterized in that still includes the center, dodges groove, black PET Tape, the Sensor Glass be located the apron bottom, TFT Glass be located Sensor Glass bottom, laminating glue set firmly respectively between apron, Sensor Glass and TFT Glass, the light guide plate set firmly in the backplate top, the optical film set firmly in the light guide plate top, the center set firmly in backplate right side upper end, dodge the trench in the inside left side upper end of center, black PET Tape set firmly in TFT Glass bottom, just the embedding of the black PET Tape other end avoid the inslot portion.

2. The structure for improving side light leakage of a vehicle-mounted backlight according to claim 1, wherein a VHB double-sided tape is further fixedly disposed on the right side of the bottom of the Sensor Glass, and the VHB double-sided tape is bonded to the middle frame.

3. The structure for improving the side light leakage of the vehicle-mounted backlight source as claimed in claim 1, wherein an arc angle is further disposed at the upper end of the right side inside the avoiding groove.

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