TWM629368U - Light source module and display device - Google Patents

Abstract

A light source module includes a light guide plate, a plurality of light-emitting elements and an adhesive layer. The light guide plate has a light incident surface and a light exit surface. The plurality of light-emitting elements are disposed beside the light incident surface. Each of the plurality of light-emitting elements has a light-emitting chip and a housing. The housing has a side wall. The side wall surrounds the light-emitting chip to form an opening. A top surface of the side wall faces the light incident surface. The adhesive layer is disposed between the top surface and the light incident surface and further extends between a part of the opening and the light incident surface. A display device of the invention using the light source module is also provided.

Description

Light source module and display device

This creation relates to a light source module, especially a light source module that can be used in a display device and a display device using the light source module.

Generally, a liquid crystal display device includes a liquid crystal display panel and a backlight module, and since the liquid crystal display panel itself does not emit light, the backlight module needs to provide an illumination light source to the liquid crystal display panel. Therefore, the main function of the backlight module is to provide an illumination light source with high brightness and high uniformity.

The backlight module includes components such as a light guide plate, a light-emitting diode, and a backplane, and can be divided into an edge-type backlight module and a direct-type backlight module. In the current edge-lit backlight module, in order to fix the relative position between the light guide plate and the light emitting diode, a fixing glue is usually bonded between the light guide plate and the circuit substrate of the light emitting diode.

However, when the fixing glue is configured, if the sticking process is not tightened, bubbles are likely to be generated, and the light will be refracted when it encounters the bubbles after entering the light guide plate, and part of the light will also be absorbed by the fixing glue, which will cause the display screen to be bright. The problem of uneven darkness.

This "Prior Art" paragraph is only used to help understand the content of the creation, so the content disclosed in the "Prior Art" may contain some that do not constitute the prior art known to those with ordinary knowledge in the art. In addition, the content disclosed in the "Prior Art" does not represent the content or the problem to be solved by one or more embodiments of the present invention, nor does it represent that it has been known by those with ordinary knowledge in the technical field before the application of the present invention. know or know.

The present invention provides a light source module, which can reduce the phenomenon of uneven brightness and darkness while fixing the relative position between the light-emitting element and the light guide plate.

The present invention provides a display device that can reduce the phenomenon of uneven brightness and darkness of a display screen.

Other purposes and advantages of the present creation can be further understood from the technical features disclosed in the present creation.

In order to achieve one or part or all of the above purposes or other purposes, the light source module provided by an embodiment of the present invention includes a light guide plate, a plurality of light emitting elements and an adhesive layer. The light guide plate has a light entrance surface and a light exit surface, and the light entrance surface is connected to the light exit surface. A plurality of light emitting elements are arranged beside the light incident surface. Each light-emitting element includes a light-emitting chip and a lamp cup. The lamp cup has a side wall, the side wall surrounds the light-emitting chip to form an opening, and the top surface of the side wall faces the light incident surface. The adhesive layer is disposed between the top surface and the light incident surface and extends between a part of the opening and the light incident surface.

In an embodiment of the present invention, the above-mentioned top surface has a frame to surround the opening, the frame has a first side, a second side, a third side and a fourth side, the first side and the second side Oppositely, the third side is opposite to the fourth side, the first side and the second side are perpendicular to the light-emitting surface, the third side and the fourth side are parallel to the light-emitting surface, and the adhesive layer is arranged at least on the first side of the frame. side and second side.

In an embodiment of the present invention, the above-mentioned adhesive layer disposed on the first side of the frame and extending to a part of the opening has a first width, and the adhesive layer disposed on the second side of the frame and extending to a part of the opening It has a second width, and the first width plus the second width is 1/4~1/3 of the length of the third side.

In an embodiment of the present invention, the above-mentioned top surface has a frame to surround the opening, the frame has a first side, a second side, a third side and a fourth side, the first side and the second side Mutually Yes, the third side is opposite to the fourth side, the first side and the second side are perpendicular to the light-emitting surface, the third side and the fourth side are parallel to the light-emitting surface, and the adhesive layer is arranged at least on the third side of the frame. side and fourth side.

In an embodiment of the present invention, the above-mentioned adhesive layer disposed on the third side of the frame and extending to a part of the opening has a third width, and the adhesive layer disposed on the fourth side of the frame and extending to a part of the opening It has a fourth width, and the third width plus the fourth width is 1/4~1/3 of the length of the first side.

In an embodiment of the present invention, the above-mentioned light-emitting chip has a light-emitting angle range, the light-emitting chip is suitable for providing light within the light-emitting angle range to form a light-emitting area at the opening, and the adhesive layer is not disposed in the light-emitting area.

In an embodiment of the present invention, the above-mentioned adhesive layer is further configured to correspond to the light incident surface between any two adjacent light-emitting elements.

In an embodiment of the present invention, the thickness of the above-mentioned adhesive layer in the direction perpendicular to the top surface is 0.05mm˜0.15mm.

In an embodiment of the present invention, the above-mentioned adhesive layer has light transmittance.

To achieve one or part or all of the above purposes or other purposes, a display device provided by an embodiment of the present invention includes a display panel and the above-mentioned light source module. The display panel is arranged on the light-emitting side of the light source module.

In the light source module of this creative embodiment, the top surface of the side wall of each light-emitting element faces the light-incident surface of the light guide plate, and the adhesive layer is disposed between the top surface and the light-incident surface, which can fix the light-emitting element and the light guide plate. The effect of the relative position between them. At the same time, since the adhesive layer is not disposed between the light guide plate and the circuit substrate of the light emitting element and is close to the light emitting element as in the prior art, it can reduce the absorption of light by the adhesive layer after entering the light guide plate, thereby reducing uneven light and dark. The phenomenon. In addition, the adhesive layer also extends between a part of the opening and the light incident surface, and the space of the adhesive layer reserved here is It can avoid the incomplete bonding of the light guide plate and the light-emitting element due to tolerance during the assembly process, and ensure that the effect of fixing the light guide plate is not affected by the tolerance. Since the display device of the present inventive embodiment uses the above-mentioned light source module, the phenomenon of uneven brightness and darkness of the display screen can be reduced.

In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail in conjunction with the accompanying drawings.

1: Display device

10: Light source module

20: Display panel

100: light guide plate

110: light incident surface

120: light-emitting surface

200: Light-emitting element

210: Luminous Chip

220: Lamp Cup

221: Sidewall

222: top surface

223: Border

2231: First side

2232: Second side

2233: Third side

2234: Fourth side

230: Light-emitting substrate

240: Opening

300: Adhesive layer

400: circuit substrate

500: Backplane

L: light

L1, L2: length

Ls: area light source

R: light-emitting area

T: Thickness

W1: first width

W2: Second width

W3: third width

W4: Fourth width

FIG. 1 is a three-dimensional schematic diagram of a light source module according to an embodiment of the invention.

FIG. 2 is a schematic partial cross-sectional view of a light source module according to an embodiment of the invention.

FIG. 3 is a schematic diagram of an adhesive layer disposed on a top surface according to an embodiment of the invention.

4A to 4F are schematic diagrams of disposing the adhesive layer on the frame according to other embodiments of the present invention.

5A to 5D are schematic diagrams of disposing the adhesive layer on the light incident surface according to other embodiments of the present invention.

FIG. 6 is a schematic block diagram of a display device according to an embodiment of the invention.

FIG. 1 is a three-dimensional schematic diagram of a light source module according to an embodiment of the invention. FIG. 2 is a schematic partial cross-sectional view of a light source module according to an embodiment of the invention. FIG. 3 is a schematic diagram of an adhesive layer disposed on a top surface according to an embodiment of the invention. Referring to FIGS. 1 to 3 , the light source module 10 of this embodiment includes a light guide plate 100 , a plurality of light emitting elements 200 , an adhesive layer 300 , a circuit substrate 400 and a backplane 500 . The circuit board 400 is disposed on the backplane 500 . The plurality of light emitting elements 200 are disposed on the circuit substrate 400 and are electrically connected to the circuit substrate 400 , and the circuit substrate 400 is suitable for driving these light emitting elements 200 to emit light. The light guide plate 100 is, for example, disposed on the circuit substrate 400 , but not limited thereto. As shown in FIG. 2 , the light guide plate 100 may be partially disposed on the circuit substrate 400 , or the area of the circuit substrate 400 may be larger than that of the light guide plate 100 , so that the light guide plate 100 is integrally disposed on the circuit substrate 400 . In another embodiment, the light guide plate 100 may also be disposed on the back plate 500 . The light guide plate 100 has a light incident surface 110 and a light exit surface 120 , and the light incident surface 110 is connected to the light exit surface 120 . The plurality of light emitting elements 200 are arranged beside the light incident surface 110 . The adhesive layer 300 is disposed between the plurality of light emitting elements 200 and the light incident surface 110 . The adhesive layer 300 is, for example, optical glue or fixing tape. The present invention does not particularly limit the type of the adhesive layer 300 as long as it has the function of bonding optical elements. Preferably, the adhesive layer 300 of this embodiment has, for example, light transmittance, so as to reduce the shading effect on the light L emitted by the light emitting element 200 . In FIG. 1 , in order to clearly illustrate the structure and relative position of the adhesive layer 300 , the circuit substrate 400 and the backplane 500 are omitted.

In this embodiment, the number of the light-emitting elements 200 is only for illustration, and the present invention does not particularly limit the number of the light-emitting elements 200 . For example, the number of the adhesive layers 300 corresponds to the number of the light emitting elements 200 , but not limited thereto. In another embodiment, a single adhesive layer 300 may also correspond to a plurality of light emitting elements 200 . Each light-emitting element 200 in this embodiment includes a light-emitting chip 210 and a lamp cup 220 . The light-emitting chip 210 and the lamp cup 220 are disposed on the light-emitting substrate 230 . The lamp cup 220 has a side wall 221 and a light-emitting substrate 230 . The sidewalls 221 and the light-emitting substrate 230 together form an accommodating space, and the light-emitting chip 210 is located in the accommodating space and disposed on the light-emitting substrate 230 . The sidewall 221 surrounds the light-emitting chip 210 to form the opening 240 , and the top surface 222 of the sidewall 221 faces the light incident surface 110 of the light guide plate 100 . That is, the light-emitting element 200 is disposed on the circuit substrate 400 by the lamp cup 220 , and the light-emitting chip 210 is electrically connected to the circuit substrate 400 through the light-emitting substrate 230 . In addition, specifically, the adhesive layer 300 is disposed between the top surface 222 and the light incident surface 110 and extends between a part of the opening 240 and the light incident surface 110 . The adhesive layer 300 is extended between a part of the opening 240 and the light incident surface 110 to reserve space to avoid the incomplete adhesion of the light guide plate 100 and the light emitting element 200 due to tolerances during the assembly process. The adhesion effect between the light emitting elements 200 is not affected by the tolerance.

The top surface 222 has a frame 223 to surround the opening 240. In other words, the light-emitting surface of the light-emitting element 200 is composed of the frame 223 and the opening 240, and the light L exits from the opening 240, and the adhesive layer 300 is disposed on the frame 223 and surrounds the opening. 240. In this embodiment, the frame 223 and the opening 240 are, for example, rectangular, but not limited thereto. The frame 223 has a first side 2231 , a second side 2232 , a third side 2233 and a fourth side 2234 . The first side 2231 is opposite to the second side 2232 . The third side edge 2233 is opposite to the fourth side edge 2234 . The first side 2231 and the second side 2232 are, for example, perpendicular to the light emitting surface 120 , and the third side 2233 and the fourth side 2234 are, for example, parallel to the light emitting surface 120 . From the perspective of FIG. 3 , the first side 2231 is located on the left side of the frame 223 , the second side 2232 is located on the right side of the frame 223 , the third side 2233 is located on the upper side of the frame 223 , and the fourth side 2234 is located on the upper side of the frame 223 . underside.

In this embodiment, the adhesive layer 300 is, for example, disposed on the first side 2231 , the second side 2232 , the third side 2233 and the fourth side 2234 of the frame 223 , but not limited thereto. In other embodiments, the adhesive layer 300 may also be disposed on at least two of the first side 2231 , the second side 2232 , the third side 2233 and the fourth side 2234 . The larger the area of the adhesive layer 300 disposed on the frame 223 is, the better the adhesive effect of the adhesive layer 300 is, and the higher the adhesive strength between the light guide plate 100 and the light emitting element 200 is. If the adhesive layer 300 is only disposed on one of the first side 2231 , the second side 2232 , the third side 2233 and the fourth side 2234 , the adhesive strength is insufficient, so that the light guide plate 100 and the light-emitting The elements 200 are easily detached.

The adhesive layer 300 has a thickness T in a direction perpendicular to the top surface 222 . When the thickness T is too small, the adhesive strength between the light guide plate 100 and the light emitting element 200 is insufficient. Conversely, when the thickness T is too large, the adhesive layer 300 may have a shielding effect on the light L. In a preferred embodiment of the present invention, the thickness T is 0.05mm~0.15mm.

The light-emitting element 200 can be a light-emitting diode, and the light-emitting chip 210 is, for example, a light-emitting diode chip directly cut from a wafer, but not limited to this, and the light-emitting element 200 can also be of other types class of light-emitting elements. In this embodiment, the light-emitting chip 210 has a light-emitting angle range (as shown in FIG. 2 ), the light-emitting chip 210 is suitable for providing light L within the light-emitting angle range to form the light-emitting region R at the opening 240 , and the adhesive layer 300 does not It is arranged in the light-emitting area R. Specifically, the area of the light-emitting region R is, for example, smaller than or equal to the area of the opening 240 . By adjusting or using different light-emitting chips 210 , the light-emitting angle range can be changed, thereby changing the area of the light-emitting region R. The “light emitting area R” is defined as the area through which the light L provided by the light emitting chip 210 mainly passes through the opening 240 . In other words, in the non-light-emitting region R of the opening 240, some light L will still pass through, and the non-light-emitting region R of the opening 240 is also the region where the adhesive layer 300 is disposed. Since the adhesive layer 300 is not disposed in the light-emitting region R, and when the adhesive layer 300 has light transmittance, part of the light L in the non-light-emitting region R can pass through. Therefore, the adhesive layer 300 in this embodiment can be disposed after being disposed. The influence on the light emitting effect of the light emitting element 200 is reduced.

The circuit substrate 400 is, for example, a printed circuit board, which can be a rigid board or a flexible board. The rigid board is, for example, a metal core printed circuit board (MCPCB) or a copper foil circuit substrate (eg, a FR4 circuit substrate).

In the light source module 10 of this embodiment, the top surface 222 of the side wall 221 of each light emitting element 200 faces the light incident surface 110 of the light guide plate 100 , and the adhesive layer 300 is disposed between the top surface 222 and the light incident surface 110 . Since the light-emitting element 200 has been fixed on the circuit substrate 400, the circuit substrate 400 can be fixed on the backplane 500 at this time, or the light guide plate 100 can be fixed on the backplane 500 relative to the other side of the light-emitting element 200. The method may be through a colloid or a mechanism, so the effect of fixing the light guide plate 100 can be achieved indirectly. At the same time, since the adhesive layer 300 is not disposed between the light guide plate and the circuit substrate and is close to the light-emitting element as in the prior art, it can reduce the absorption of light by the adhesive layer after entering the light guide plate, thereby reducing the phenomenon of uneven brightness and darkness . In addition, the adhesive layer 300 also extends between a part of the opening 240 and the light incident surface 110 , and the space for the adhesive layer 300 is reserved here. It is possible to avoid incomplete adhesion of the light guide plate 100 and the light emitting element 200 due to tolerances during the assembly process, and to ensure that the effect of fixing the light guide plate 100 is not affected by the tolerances.

In order to achieve the above effects, the adhesive layer 300 of this embodiment also has the following designs, for example. Please refer to FIG. 3 again, the adhesive layer 300 disposed on the first side 2231 of the frame 223 and extending to a part of the opening 240 has a first width W1, and is disposed on the second side 2232 of the frame 223 and extending to a part of the opening 240 The adhesive layer 300 has a second width W2. The first width W1 and the second width W2 are, for example, 1/4˜1/3 of the length L1 of the third side edge 2233 . It should be noted that since the third side 2233 and the fourth side 2234 have the same length L1, it can also be considered that the first width W1 plus the second width W2 is 1/4 of the length L1 of the fourth side 2234. ~1/3.

On the other hand, the adhesive layer 300 disposed on the third side 2233 of the frame 223 and extending to a part of the opening 240 has a third width W3, and the adhesive layer 300 disposed on the fourth side 2234 of the frame 223 and extending to a part of the opening 240 Layer 300 has a fourth width W4. The third width W3 and the fourth width W4 are 1/4˜1/3 of the length L2 of the first side 2231 . Similarly, since the first side 2231 and the second side 2232 have the same length L2, the third width W3 plus the fourth width W4 can also be regarded as 1/4~1 of the length L2 of the second side 2232 /3.

As mentioned above, the adhesive layer 300 of this embodiment is, for example, disposed on the first side 2231 , the second side 2232 , the third side 2233 and the fourth side 2234 of the frame 223 , but not limited thereto. 4A to 4F are schematic diagrams of disposing the adhesive layer on the frame according to other embodiments of the present invention. Referring to FIGS. 4A to 4F , in other embodiments, considering the bonding strength, the adhesive layer 300 needs to be disposed on at least two opposite sides of the four sides of the frame 223 , for example, at least the first The side 2231 and the second side 2232 (as shown in FIG. 4A ), or at least the third side 2233 and the fourth side 2234 (as shown in FIG. 4B ) should be arranged. "At least" means the least or the least. For example, "at least the first side 2231 and the second side 2232 are required", and the range also includes the first side 2231, the second side 2232 and the third side 2233 (as shown in FIG. 4C ). ), arranged on the first side The side 2231 , the second side 2232 and the fourth side 2234 (as shown in FIG. 4D ) are arranged on the first side 2231 , the second side 2232 , the third side 2233 and the fourth side 2234 . Similarly, "at least the third side 2233 and the fourth side 2234 must be arranged", the scope also includes the arrangement on the first side 2231, the third side 2233 and the fourth side 2234 (as shown in Fig. 4E) , arranged on the second side 2232, the third side 2233 and the fourth side 2234 (as shown in FIG. 4F), and on the first side 2231, the second side 2232, the third side 2233 and the fourth side side 2234. In addition, although not described in detail, the above-mentioned adhesive layers 300 disposed on the sides of the frame 223 all extend to a part of the opening 240 .

In this embodiment, the adhesive layer 300 is only disposed between the top surface 222 and the light incident surface 110 , but not limited thereto. 5A to 5D are schematic diagrams of disposing the adhesive layer on the light incident surface according to other embodiments of the present invention. Please refer to FIG. 1 , FIG. 3 and FIGS. 5A to 5D , in other embodiments, the adhesive layer 300 is also disposed, for example, corresponding to the light incident surface 110 between any two adjacent light emitting elements 200 , and its shape can be determined according to Design needs adjustment. For example, the adhesive layer 300 corresponding to the light incident surface 110 between any two adjacent light emitting elements 200 may be formed from the second side 2232 of the frame 223 corresponding to the light emitting element 200 and the adjacent other The first side 2231 of the frame 223 of the light-emitting element 200 extends to the light incident surface 110 corresponding to any two adjacent light-emitting elements 200, and extends from the third side 2233 of the frame 223 corresponding to the light-emitting element 200 to the opposite side. The third side 2233 of the frame 223 of another adjacent light emitting element 200 (as shown in FIG. 5A ).

Alternatively, it can also extend from the second side 2232 of the frame 223 corresponding to the light-emitting element 200 and the first side 2231 of the frame 223 of another adjacent light-emitting element 200 to the one corresponding to any two adjacent light-emitting elements 200 and extending from the fourth side 2234 of the frame 223 corresponding to the light-emitting element 200 to the fourth side 2234 of the frame 223 of another adjacent light-emitting element 200 (as shown in FIG. 5B ).

Alternatively, it can also extend from the second side 2232 of the frame 223 corresponding to the light-emitting element 200 and the first side 2231 of the frame 223 of another adjacent light-emitting element 200 to any two The light incident surface 110 between adjacent light-emitting elements 200 extends from the third side 2233 and the fourth side 2234 corresponding to the frame 223 of the light-emitting element 200 to the adjacent frame 223 of another light-emitting element 200 respectively. The third side 2233 and the fourth side 2234 (as shown in FIG. 5C ).

Alternatively, the adhesive layer 300 may also be covered corresponding to the light incident surface 110 between any two adjacent light emitting elements 200 (as shown in FIG. 5D ). The above-mentioned embodiments are merely illustrative, and do not represent the limited scope of the present invention. Specifically, the larger the area of the adhesive layer 300 corresponding to the light incident surface 110 between any two adjacent light-emitting elements 200 is, the greater the adhesive strength of the adhesive layer 300 can be. On the other hand, the larger the area, the easier it is to absorb light, so that the light-emitting surface 120 may have uneven brightness and darkness when the light-emitting surface 120 emits light in the region between any two adjacent light-emitting elements 200 . For example, the adhesive layer 300 corresponding to the light incident surface 110 between any two adjacent light-emitting elements 200 in FIG. 5D has a higher adhesive strength than the adhesive layer 300 in FIG. 5A . Under the configuration, when the light emitting surface 120 emits light corresponding to the region between any two adjacent light emitting elements 200, the phenomenon of uneven brightness and darkness is more likely to occur than the configuration shown in FIG. 5A. On the contrary, although the adhesive strength of the adhesive layer 300 of FIG. 5A is relatively low, in the configuration of FIG. 5A , the light-emitting surface 120 corresponding to the region between any two adjacent light-emitting elements 200 emits light more than the configuration of FIG. 5D . It can reduce the phenomenon of uneven brightness and darkness.

FIG. 6 is a schematic block diagram of a display device according to an embodiment of the invention. Referring to FIG. 6 , the display device 1 of the present embodiment includes a light source module 10 and a display panel 20 , and the display panel 20 is disposed on the light emitting side of the light source module 10 . The display panel 20 may be a liquid crystal display panel or other non-self-luminous display panel. The light source module 10 is used for providing the surface light source Ls to the display panel 20 as a display light source. Since the light source module 10 of this embodiment can fix the light guide plate 100 while reducing the phenomenon of uneven brightness and darkness, the display device 1 using the light source module 10 can also reduce the phenomenon of uneven brightness and darkness of the display screen.

To sum up, in the light source module of this creative embodiment, the top surface of the side wall of each light-emitting element faces the light incident surface of the light guide plate, and the adhesive layer is disposed between the top surface and the light incident surface, which can achieve The effect of fixing the relative position between the light-emitting element and the light guide plate. At the same time, since the adhesive layer is not disposed between the light guide plate and the circuit substrate and is close to the light-emitting element as in the prior art, it can reduce the absorption of light by the adhesive layer after entering the light guide plate, thereby reducing the phenomenon of uneven light and dark. In addition, the adhesive layer also extends between a part of the opening and the light incident surface. The space reserved for the adhesive layer here can avoid the incomplete adhesion of the light guide plate and the light-emitting element due to tolerances during the assembly process. The effect is not affected by tolerances. Since the display device of the present inventive embodiment uses the above-mentioned light source module, the phenomenon of uneven brightness and darkness of the display screen can be reduced.

Although the present creation has been disclosed as above with examples, it is not intended to limit the present creation. Those with ordinary knowledge in the technical field to which the present creation belongs may make some changes and modifications without departing from the spirit and scope of the present creation. Therefore, the scope of protection of this creation should be determined by the scope of the appended patent application.

10: Light source module

100: light guide plate

110: light incident surface

120: light-emitting surface

200: Light-emitting element

210: Luminous Chip

220: Lamp Cup

221: Sidewall

222: top surface

230: Light-emitting substrate

240: Opening

300: Adhesive layer

400: circuit substrate

500: Backplane

L: light

T: Thickness

Claims (10)

A light source module, comprising: a light guide plate, which has a light incident surface and a light emitting surface, the light incident surface is connected to the light emitting surface; A plurality of light-emitting elements are arranged next to the light-incident surface, each of the light-emitting elements includes a light-emitting chip and a lamp cup, the lamp cup has a side wall, the side wall surrounds the light-emitting chip to form an opening, and the side wall has an opening. a top surface facing the light incident surface; and An adhesive layer is disposed between the top surface and the light incident surface and extends between a part of the opening and the light incident surface. The light source module of claim 1, wherein the top surface has a frame surrounding the opening, and the frame has a first side, a second side, a third side and a fourth side, The first side is opposite to the second side, the third side is opposite to the fourth side, the first side and the second side are perpendicular to the light emitting surface, the third side and the The fourth side is parallel to the light-emitting surface, and the adhesive layer is disposed at least on the first side and the second side of the frame. The light source module of claim 2, wherein the adhesive layer disposed on the first side of the frame and extending to a part of the opening has a first width, and is disposed on the second side of the frame and The adhesive layer extending to a part of the opening has a second width, and the first width plus the second width is 1/4˜1/3 of the length of the third side. The light source module of claim 1, wherein the top surface has a frame surrounding the opening, and the frame has a first side, a second side, a third side and a fourth side, The first side is opposite to the second side, the third side is opposite to the fourth side, the first side and the second side are perpendicular to the light emitting surface, the third side and the The fourth side is parallel to the light emitting surface, and the adhesive layer is disposed at least on the third side and the fourth side of the frame. The light source module of claim 4, wherein the adhesive layer disposed on the third side of the frame and extending to a part of the opening has a third width, and is disposed on the fourth side of the frame and The adhesive layer extending to a part of the opening has a fourth width, and the third width plus the fourth width is 1/4˜1/3 of the length of the first side. The light source module of claim 1, wherein the light-emitting chip has a light-emitting angle range, the light-emitting chip is suitable for providing a light within the light-emitting angle range to form a light-emitting area at the opening, and the adhesive layer is not disposed on the light-emitting area. The light source module according to claim 1, wherein the adhesive layer is further disposed corresponding to the light incident surface between any two adjacent light emitting elements. The light source module according to claim 1, wherein the thickness of the adhesive layer in the direction perpendicular to the top surface is 0.05mm˜0.15mm. The light source module according to claim 1, wherein the adhesive layer has light transmittance. A display device, comprising: A light source module, including: a light guide plate, which has a light incident surface and a light emitting surface, the light incident surface is connected to the light emitting surface; A plurality of light-emitting elements are arranged next to the light-incident surface, each of the light-emitting elements includes a light-emitting chip and a lamp cup, the lamp cup has a side wall, the side wall surrounds the light-emitting chip to form an opening, and the side wall has an opening. a top surface facing the light incident surface; and an adhesive layer disposed between the top surface and the light incident surface and extending between a part of the opening and the light incident surface; and A display panel is disposed on a light-emitting side of the light source module.

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