Narrow-frame backlight structure and display module

Abstract

The utility model discloses a narrow frame backlight structure and a display module, the narrow frame backlight structure comprises a backlight supporting frame, an LED lamp strip, a shading rubber mat and a fixing piece, and the backlight supporting frame is provided with a containing cavity; the LED lamp strip comprises an LED lamp and an FPC, the LED lamp is arranged on the FPC, and the LED lamp faces the containing cavity. The shading rubber mat is partially attached to the side face, away from the LED lamp, of the FPC, and the shading rubber mat is located on the front face of the backlight supporting frame. The fixing piece comprises a front pasting part, a bending part and a back pasting part, the front pasting part, the bending part and the back pasting part are connected in sequence, the front pasting part is attached to the shading rubber mat, the bending part is attached to the bottom of the backlight supporting frame, the back pasting part is attached to the back of the backlight supporting frame, and the fixing piece is used for limiting and fixing the LED light bar. In this way, the FPC and the backlight supporting frame are further reinforced through the fixing pieces, and therefore the situation that the display effect is affected due to the fact that the positions of the LED light bars deviate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a narrow-frame backlight structure and a display module. Background Art

[0002] As consumers pursue the aesthetics of display devices, screen-to-body ratio has become an important consideration, which means that the borders of display screens are getting narrower and narrower to provide users with a wider visual experience. The narrow border requirement of the display module means that the size of the LED light bar set at the lower end of the backlight structure will be correspondingly smaller, which will result in a reduction in the area where the LED light bar and the backlight support frame are fixed by double-sided adhesive. Then, when the display module undergoes transportation shock or other related reliability tests, the LED light bar is prone to separation from the backlight support frame, causing the LED light bar to fall off, that is, the position of the LED light bar is offset, which will affect the display effect. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a narrow-frame backlight structure and a display module, thereby preventing the position of the LED light strip from being offset and affecting the display effect.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A narrow-frame backlight structure comprises: a backlight support frame, an LED light strip, a shading rubber pad and a fixing plate, wherein a receiving cavity is provided on the backlight support frame; the LED light strip comprises an LED lamp and an FPC, wherein the LED lamp is arranged on the FPC and faces the receiving cavity; the shading rubber pad is partially attached to a side surface of the FPC away from the LED lamp, and the shading rubber pad is located on the front side of the backlight support frame; the fixing plate comprises a front adhesive portion, a bending portion and a back adhesive portion, wherein the front adhesive portion, the bending portion and the back adhesive portion are connected in sequence, the front adhesive portion is attached to the shading rubber pad, the bending portion is attached to the bottom of the backlight support frame, the back adhesive portion is attached to the back side of the backlight support frame, and the fixing plate is used to limit and fix the LED light strip.

[0006] In one of the embodiments, the fixing sheet is a PET fixing sheet, and an adhesive layer is provided on a side of the PET fixing sheet facing the backlight support frame.

[0007] In one of the embodiments, a strong and weak adhesive layer is provided on a side surface of the front adhesive portion away from the backlight supporting frame.

[0008] In one embodiment, the sticking area of ​​the front sticking portion is larger than the sticking area of ​​the back sticking portion.

[0009] In one of the embodiments, a double-sided adhesive is provided on one side of the FPC facing the accommodating cavity, and the FPC is partially adhered and fixed to the backlight support frame by the double-sided adhesive.

[0010] In one embodiment, an optical element is further included. The optical element includes an upper brightness enhancement sheet, a lower brightness enhancement sheet, a diffusion film, a light guide plate and a reflective film which are stacked in sequence. A side surface of the reflective film abuts against the bottom surface of the accommodating cavity.

[0011] In one of the embodiments, the FPC is also partially fixed to one side surface of the light guide plate by means of the double-sided adhesive.

[0012] In one of the embodiments, the backlight support frame is an integrated structure of rubber and iron.

[0013] A display module comprises the above-mentioned narrow-frame backlight structure, and also comprises a cover plate and a liquid crystal display screen, wherein the cover plate, the liquid crystal display screen and the narrow-frame backlight structure are stacked in sequence.

[0014] In one embodiment, the liquid crystal display screen includes an upper polarizer, an upper glass, a lower glass and a lower polarizer stacked in sequence.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The narrow-frame backlight structure and display module of the utility model are provided with a backlight support frame, an LED light bar, a shading rubber pad and a fixing sheet, and the front adhesive portion of the fixing sheet is attached to the shading rubber pad, the bent portion is attached to the bottom of the backlight support frame, and the back adhesive portion is attached to the back of the backlight support frame, so that the fixing sheet can limit and fix the LED light bar, that is, the FPC and the backlight support frame are further reinforced by the fixing sheet to prevent separation problems, thereby avoiding the position of the LED light bar from being offset and affecting the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0018] Figure 1 A schematic diagram of a stacking structure of a display module;

[0019] Figure 2 for Figure 1 A front view structural diagram of a narrow frame backlight structure of a display module;

[0020] Figure 3 for Figure 2 Schematic diagram of the stacking structure of the narrow frame backlight structure;

[0021] Figure 4 for Figure 2 Schematic diagram of the rear view structure of the narrow bezel backlight structure. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a display module 10 includes a narrow-frame backlight structure 11, a cover plate 12 and a liquid crystal display screen 13, wherein the cover plate 12, the liquid crystal display screen 13 and the narrow-frame backlight structure 11 are stacked in sequence. The narrow-frame backlight structure 11 is used to provide a light source for the display module. Specifically, the liquid crystal display screen 13 includes an upper polarizer 13a, an upper glass 13b, a lower glass 13c and a lower polarizer 13d stacked in sequence, wherein the upper glass 13b is a CF (color filter) glass, and the lower glass 13c is a TFT (thin film transistor) glass.

[0024] Specifically, a narrow-frame backlight structure 11 includes: a backlight support frame 100, an LED light bar 200, a shading rubber pad 300 and a fixing sheet 400, wherein a receiving cavity is provided on the backlight support frame 100; the LED light bar 200 includes an LED lamp 210 and an FPC 220, wherein the LED lamp 210 is arranged on the FPC 220, and the LED lamp 210 faces the receiving cavity; the shading rubber pad 300 is partially attached to a side surface of the FPC 220 away from the LED lamp 210, and ... 0 is located on the front side of the backlight support frame 100; the fixing sheet 400 includes a front sticking portion 410, a bending portion 420 and a back sticking portion 430, the front sticking portion 410, the bending portion 420 and the back sticking portion 430 are connected in sequence, the front sticking portion 410 is attached to the light-shielding rubber pad 300, the bending portion 420 is attached to the bottom of the backlight support frame 100, and the back sticking portion 430 is attached to the back side of the backlight support frame 100, and the fixing sheet 400 is used to limit and fix the LED light strip 200.

[0025] It should be noted that the LED light strip 200 and the fixing sheet 400 are both arranged at the bottom of the backlight support frame 100, and the front adhesive portion of the fixing sheet 400 is attached to the light-shielding rubber pad 300, the bending portion 420 is attached to the bottom of the backlight support frame 100, and the back adhesive portion 430 is attached to the back of the backlight support frame 100, so that the fixing sheet 400 can limit and fix the LED light strip 200, that is, the FPC220 and the backlight support frame 100 are further reinforced by the fixing sheet 400 to prevent separation problems, thereby avoiding the position of the LED light strip 200 from shifting and affecting the display effect.

[0026] In one embodiment, the fixing sheet 400 is a PET (polyester) fixing sheet, and an adhesive layer is provided on one side of the PET fixing sheet facing the backlight support frame 100. Since the PET material has high strength and toughness, its tensile strength and impact resistance are excellent, and it can ensure the fixing effect of the light bar 200, and at the same time, it has good heat resistance, so even if the LED light bar has high heat dissipation, it will not affect the use effect.

[0027] Furthermore, a strong and weak adhesive layer 500 is provided on one side of the front adhesive portion 410 away from the backlight support frame 100. When the narrow-frame backlight structure is combined with the liquid crystal display screen, the adhesive area between the narrow-frame backlight structure and the liquid crystal display screen will be reduced due to the narrow-frame structure of the backlight. Therefore, a fixing sheet is added, and strong and weak adhesives are also added at the same time, so that the strong and weak adhesives are connected to the lower glass 13c on the liquid crystal display screen, thereby increasing the adhesive area between the liquid crystal display screen and the narrow-frame backlight structure. In addition, the surface of the strong and weak adhesives is weakly sticky.

[0028] In one embodiment, the bonding area of ​​the front bonding portion 410 is larger than the bonding area of ​​the back bonding portion 430. Since the heat dissipation effect of PET material is not high, it is necessary to reduce the bonding area of ​​the back bonding portion 430 so that the heat can be dissipated from the backlight support frame 100.

[0029] Preferably, a double-sided adhesive 221 is provided on one side of the FPC 220 facing the accommodating cavity, and the FPC 220 is partially adhered and fixed to the backlight supporting frame 100 by the double-sided adhesive 221 .

[0030] Furthermore, the narrow frame backlight structure further includes an optical element 600, which includes an upper brightness enhancement sheet 610, a lower brightness enhancement sheet 620, a diffusion film 630, a light guide plate 640 and a reflective film 650 stacked in sequence, and one side of the reflective film 650 abuts against the bottom surface of the accommodating cavity. The optical element 600 can make the light emitted by the LED light bar 200 brighter and more uniform, thereby improving the display effect.

[0031] Furthermore, the FPC 220 is partially fixed to one side of the light guide plate 640 by means of a double-sided adhesive 221. In this way, the fixing area of ​​the FPC 220 can be further increased, thereby ensuring the firmness of the FPC 220.

[0032] Preferably, the backlight support frame is a glue-iron integrated structure. That is, the backlight support frame is composed of an iron frame and a glue frame, and the iron frame and the glue frame are formed in one piece through a corresponding processing mold, which not only improves production efficiency, but also improves the overall strength of the backlight support frame. The area where the FPC220 is pasted is the glue frame.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A narrow frame backlight structure, characterized in that: include: A backlight support frame, wherein a receiving cavity is formed on the backlight support frame; An LED light bar, the LED light bar comprising an LED light and an FPC, the LED light being arranged on the FPC and the LED light facing the accommodating cavity; A light-shielding rubber pad, the light-shielding rubber pad is partially attached to a side surface of the FPC away from the LED lamp, and the light-shielding rubber pad is located on the front side of the backlight support frame; and A fixing sheet, the fixing sheet includes a front adhesive portion, a bending portion and a back adhesive portion, the front adhesive portion, the bending portion and the back adhesive portion are connected in sequence, the front adhesive portion is attached to the light-shielding rubber pad, the bending portion is attached to the bottom of the backlight support frame, the back adhesive portion is attached to the back of the backlight support frame, and the fixing sheet is used to limit and fix the LED light strip.

2. The narrow-frame backlight structure according to claim 1, characterized in that: The fixing sheet is a PET fixing sheet, and an adhesive layer is provided on a side of the PET fixing sheet facing the backlight support frame.

3. The narrow-frame backlight structure according to claim 1, characterized in that: A strong and weak adhesive layer is arranged on a side surface of the front adhesive portion away from the backlight supporting frame.

4. The narrow-frame backlight structure according to claim 2, characterized in that: The sticking area of ​​the front sticking portion is larger than the sticking area of ​​the back sticking portion.

5. The narrow-border backlight structure according to any one of claims 1 to 4, characterized in that: A double-sided adhesive is provided on one side of the FPC facing the accommodating cavity, and the FPC is partially adhered and fixed to the backlight support frame by the double-sided adhesive.

6. The narrow-frame backlight structure according to claim 5, characterized in that: It also includes an optical element, which includes an upper brightness enhancement sheet, a lower brightness enhancement sheet, a diffusion film, a light guide plate and a reflective film stacked in sequence, and a side surface of the reflective film abuts against the bottom surface of the accommodating cavity.

7. The narrow-frame backlight structure according to claim 6, characterized in that: The FPC is also partially adhered and fixed to one side surface of the light guide plate by the double-sided adhesive.

8. The narrow-frame backlight structure according to claim 1, characterized in that: The backlight support frame is a rubber-iron integrated structure.

9. A display module, characterized in that: It comprises the narrow-border backlight structure as described in any one of claims 1 to 8, and also comprises a cover plate and a liquid crystal display screen, wherein the cover plate, the liquid crystal display screen and the narrow-border backlight structure are stacked in sequence.

10. The display module according to claim 9, characterized in that: The liquid crystal display screen comprises an upper polarizer, an upper glass, a lower glass and a lower polarizer which are stacked in sequence.

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