TWI733350B - Array reflection structure of direct-type backlight module - Google Patents

Abstract

An array reflection structure of direct type backlight module includes a first array, a second array, and a positioning member. The first array includes a plurality of first reflection portions, and the plurality of first reflection portions are connected in a longitudinal direction. The second array includes a plurality of second reflection portions, and the plurality of second reflection portions are connected in a longitudinal direction. There is a gap between the second array and the first array. The longitudinal direction is substantially parallel to the gap. One side of the positioning member is connected to the first array, and the other side is abutted to the second array to position the first array and the second array and cover at least a part of the gap.

Description

Array reflection structure of direct type backlight module

The present invention relates to a backlight module arranged on a display panel, and particularly relates to a reflective structure of the backlight module of the display panel.

With the increasing demand for high-resolution, high-contrast, HDR LCD TVs in recent years, the market share of direct-lit backlight LCD TVs has gradually increased. However, the volume of direct-lit backlight LCD TVs is generally not as light and thin as edge-lit LCD TVs. In order to thin the direct-lit backlight LCD TV, the configuration of the array reflection structure and the light-emitting diode is one of the key technical points of the current manufacturers' research and development.

Due to advances in science and technology, the size of the panel is diversified, and the required array reflective structures of different sizes must also be manufactured separately using molds of different sizes, which greatly increases the manufacturing cost. In addition, as long as the array reflective structure is partially damaged or slightly flawed, the entire array reflective structure cannot be used for panel assembly, which is very inconvenient.

In view of the above problems, the present invention provides an array reflection structure of a direct type backlight module, which includes a first array, a second array, and a positioning member. Wherein, the first array includes a plurality of first reflecting parts, the plurality of first reflecting parts are connected in the longitudinal direction; the second array includes a plurality of second reflecting parts, the plurality of second reflecting parts are connected in the longitudinal direction, and the second array is connected with Between the first array There is a gap, and the longitudinal direction and the length direction of the gap are substantially parallel; one side of the positioning member is connected to the first array, and the other side abuts against the second array to position the first array and the second array, and cover at least a part of the gap.

In this way, by assembling array reflective structures of fixed sizes and specifications, it can be applied to panels of different sizes. Specifically, the first array and the second array of the same size and specifications or the first array of different sizes and specifications can be combined. When combined with the second array, multiple sizes of array reflective structures can be assembled, and there is no need to separately manufacture array reflective structures of various sizes and specifications. This not only can effectively save mold costs, but also, if the local array reflective structure has Flaws and damages, concealing the flaws or damages by assembling, can increase the utilization of defective products of the array reflection structure.

The detailed features and advantages of the present invention will be described in detail in the following embodiments. The content is sufficient to enable anyone familiar with the relevant art to understand the technical content of the present invention and implement it according to the content disclosed in this specification, the scope of patent application and drawings. In this way, anyone who is familiar with the relevant art can easily understand the purpose and advantages of the present invention.

1: Array reflective structure

11: first array

110: accommodating space

111: first reflection part

1111: The first side wall

1113: first bottom

1114: perforation

12: second array

120: accommodating space

121: second reflector

1211: The second side wall

1211a: inner surface

1211b: outer surface

1213: second bottom

1214: Piercing

13: positioning parts

131: Positioning Department

131a, 131b: end

133: The first positioning piece

1331: The first positioning part

1331a, 1331b: end

135: The second positioning piece

1351: Second positioning part

1351a, 1351b: end

3: Light-emitting element

4: substrate

O1: longitudinal direction

O2: horizontal direction

G: gap

L1: first side length

L2: second side length

L3: positioning length

θ1, θ2: included angle

[Fig. 1] is a three-dimensional schematic diagram of the first embodiment of the present invention.

[Figure 2] is a partial three-dimensional exploded schematic diagram (1) of the first embodiment of the present invention.

[Figure 3] is a partial cross-sectional schematic diagram (1) of the first embodiment of the present invention.

[Fig. 4] is a partial three-dimensional exploded schematic diagram (2) of the first embodiment of the present invention.

[Fig. 5A] is a partial three-dimensional exploded schematic diagram of the first embodiment of the present invention (3).

[Fig. 5B] is a schematic partial cross-sectional view (2) of the first embodiment of the present invention.

[Fig. 6A] is a partial three-dimensional exploded schematic diagram (4) of the first embodiment of the present invention.

[Fig. 6B] is a partial three-dimensional exploded schematic diagram (5) of the first embodiment of the present invention.

[Fig. 6C] is a partial three-dimensional exploded schematic diagram (6) of the first embodiment of the present invention.

[Fig. 7] is a partial three-dimensional exploded schematic diagram (1) of the second embodiment of the present invention.

[Fig. 8A] is a schematic partial cross-sectional view (1) of the second embodiment of the present invention.

[Fig. 8B] is a partial cross-sectional schematic diagram (2) of the second embodiment of the present invention.

[Figure 9] is a partial three-dimensional exploded schematic view (2) of the second embodiment of the present invention.

Various embodiments are presented below for detailed description. However, the embodiments are only used as examples for description, and do not limit the scope of the present invention to be protected. Well-known elements and steps are not described in the embodiments to avoid unnecessary limitation of the content of the present invention. In addition, some elements are omitted from the drawings in the embodiments to clearly show the technical characteristics of the present invention. The same reference numerals will be used to indicate the same or similar elements in all the drawings.

In this article, unless the article is specifically limited by the article, "a" and "the" can generally refer to a single or multiple ones. It will be further understood that the words "include", "have" and similar words used in this text indicate the recorded features, regions, integers, steps, operations, elements and/or components, but do not exclude the description or In addition, one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.

Please refer to Figure 1, Figure 2 and Figure 3, Figure 1 is a perspective schematic view of the first embodiment of the present invention, Figure 2 is a partial perspective exploded schematic view of the first embodiment of the present invention (1), Figure 3 is the first embodiment of the present invention A schematic partial cross-sectional view of an embodiment (1). The present invention is an array reflection structure 1 of a direct type backlight module, which is arranged in the backlight module and used to reflect the light source of the backlight module to provide a display The light source of the panel (not shown). In some implementations, the light source of the backlight module is a plurality of light-emitting elements 3, which are preferably arranged in rows (for example, m rows in total) and rows (for example, n columns in total) on the circuit-equipped substrate 4 in a row. Matrix arrangement (m rows×n columns). Here, the array reflective structure 1 is attached to the substrate 4, and a plurality of perforations 1114, 1214 are formed on one side of the array reflective structure 1 attached to the substrate 4, and the multiple perforations 1114, 1214 correspond to the plurality of light emitting elements 3, so that The light-emitting element 3 passes through the corresponding through holes 1114 and 1214, and when it emits light, it is reflected by the array reflection structure 1 to provide a light source for the display panel. The array reflection structure 1 of the direct type backlight module will be further described below.

[First Embodiment]

Please continue to refer to FIG. 1 and FIG. 2, the array reflective structure 1 of the direct-lit backlight module of the present invention can mainly be composed of a first array 11, a second array 12 and a positioning member 13.

Please refer to FIG. 2 and FIG. 3, the first array 11 is illustrated by taking the four first reflecting parts 111 arranged in a matrix of 2 rows×2 columns as an example, wherein the two first reflecting parts 111 are connected along the longitudinal direction O1. The other two first reflecting parts 111 are connected in the transverse direction O2, and the transverse direction O2 is perpendicular to the longitudinal direction O1. Here, the first reflecting portion 111 may be composed of four first side wall portions 1111 and a first bottom portion 1113, wherein the four first side wall portions 1111 are connected to the first bottom portion 1113 to form the accommodating space 110, and, The bottom of the accommodating space 110 has a through hole 1114, and the light emitting element 3 is disposed in the through hole 1114. In this embodiment, when viewed from the top, the opening of the first reflection portion 111 is generally a parallelogram, when viewed from the side, the cross-section of the first reflection portion 111 is narrow at the bottom and wide at the top.

1、n

1，如圖1所示的第一陣列11即為3行×8列的矩陣。 The first array 11 described above is a matrix of 2 rows×2 columns only for example, and the present invention is not limited to this. It may be 1 row×2 columns or 2 rows×1 columns, or m rows×n columns. Matrix, where m

1, n

1. The first array 11 shown in FIG. 1 is a matrix of 3 rows×8 columns.

It should be noted that the aforementioned structure of the first reflecting portion 111 is only an example, as long as it can accommodate the light-emitting element 3 and reflect light as the light source of the display panel. For example, the first reflecting portion 111 may have six first reflectors. The side wall portions 1111 are connected to each other so that the opening of the first reflecting portion 111 is approximately hexagonal.

In some implementations, please refer to FIGS. 3 and 4. FIG. 4 is a partial three-dimensional exploded schematic view (2) of the first embodiment of the present invention. The first reflecting portion 111 is provided with a plurality of numbers at the bottom of the accommodating space 110. The perforation 1114 is used to set a plurality of light-emitting elements 3, and each first reflecting part 111 reflects the light of the light-emitting element 3 located in the first reflecting part 111.

1、n

1。在一些實施態樣中，請參閱圖2與圖3所示，第二陣列12是以四個第二反射部121排列為2行×2列的矩陣為例說明，其結構實質上相同於前述第一陣列11，在此不再累述。 2 and 3 again, the second array 12 may be composed of a plurality of second reflecting parts 121, and the plurality of second reflecting parts 121 may be arranged in a matrix of m rows×n columns, where m

1, n

1. In some implementations, please refer to FIG. 2 and FIG. 3, the second array 12 is illustrated by taking a matrix with four second reflecting parts 121 arranged in 2 rows×2 columns as an example, and its structure is substantially the same as the aforementioned The first array 11 will not be repeated here.

Here, the second reflecting portion 121 may be composed of four second side wall portions 1211 and a second bottom portion 1213, wherein the four second side wall portions 1211 are connected to the second bottom portion 1213 to form an accommodating space 120, and, The bottom of the accommodating space 120 has a through hole 1214 for disposing a plurality of light-emitting elements 3, and each second reflecting part 121 reflects the light of another light-emitting element 3 located in the second reflecting part 121. Its structure is substantially the same as the structure of the aforementioned first reflecting portion 111, and will not be repeated here.

In some embodiments, please refer to FIGS. 2 and 3 again. When the first array 11 and the second array 12 are assembled together, there is a gap G therebetween. One side of positioning piece 13 is connected to the first array In the column 11, the other side abuts against the second array 12 to position the first array 11 and the second array 12, and covers at least a part of the gap G, and the longitudinal direction O1 and the length direction of the gap G are substantially parallel. Therefore, at least a part of the gap G is covered by the positioning member 13, thereby preventing the dark line problem of the display panel during display caused by the gap G.

Specifically, please refer to FIGS. 2 and 3 again. The positioning member 13 is connected to the top end of at least one first side wall portion 1111. Here, the positioning member 13 has a plurality of positioning portions 131, and one positioning portion 131 is connected to a first side wall portion 1111. On one side wall portion 1111, each positioning portion 131 has ends 131a and 131b. Wherein, the end portion 131a is connected to the top end of the at least one first side wall portion 1111, and the end portion 131b is against the inner surface 1211a of the at least one second side wall portion 1211 (the side facing the accommodating space 120, as shown in Figure 3). Shown) to form a double-layer structure. In other words, the first side wall portion 1111 and the positioning portion 131 jointly form a barb-shaped structure. In this way, the positioning member 13 can reflect the inner surface 1211a of the second side wall portion 1211 together at the second The light-emitting element 3 in the reflection part 121.

Here, the positioning member 13 can be an independent element and connected to the first side wall portion 1111 or the second side wall portion 1211, or can be formed by extending the top end of the first side wall portion 1111 or the second side wall portion 1211. Or it can be formed by cutting the side part of the first array 11 or cutting the side part of the second array 12. In other words, the positioning member 13 is formed by a part of the first reflecting part 111, and the end 131a is connected to at least one The top end of the side wall portion 1111 extends from the top end of the side wall portion 1111 to cover at least a portion of the gap G and at least a portion of the second reflection portion 121. However, the structure of the aforementioned positioning member 13 is only an example, and it is not limited thereto.

Although the foregoing description takes the end 131b of the positioning portion 131 against the inner surface 1211a of the at least one second side wall portion 1211 as an example, the present invention is not limited thereto. In some embodiments, the end of the positioning portion 131 The portion 131b can abut against the outer surface 1211b of the second side wall portion 1211 (distant The side away from the accommodating space 120, as shown in FIG. 3).

Through a plurality of first reflecting parts 111 connected in the longitudinal direction O1, and a plurality of second reflecting parts 121 connected in the longitudinal direction O1, the positioning member 13 is designed to position the first array 11 and the second array 12. By combining the first array 11 and the second array 12 or the first array 11 and the second array 12 of different sizes and specifications, the array reflection structure 1 of various sizes can be assembled. Furthermore, each of the first reflecting parts 111 and each of the second reflecting parts 121 can be regularly and neatly arranged on the substrate 4, so it is easy to align with the plurality of light emitting elements 3 on the substrate 4, which facilitates the assembly operation.

Referring to FIGS. 5A and 5B, FIG. 5A is a partial three-dimensional exploded schematic view (3) of the first embodiment of the present invention, and FIG. 5B is a partial cross-sectional view (2) of the first embodiment of the present invention, in some embodiments Among them, the two first arrays 11 are respectively located on two sides of the second array 12, wherein the two sides of the second array 12 are respectively connected to the positioning member 13. Here, two positioning elements 13 are respectively extended on both sides of the second array 12, and the two positioning elements 13 respectively abut against the first array 11 to position the two first arrays 11 and the second array 12.

The different arrangements of the positioning portion 131 along the longitudinal direction O1 of the first embodiment of the present invention are respectively disclosed below. Please refer to FIGS. 1 and 6A to 6C. FIGS. 6A to 6C are partial three-dimensional views of the first embodiment of the present invention. Decompose schematic diagrams (4) to (6). In one embodiment, as shown in FIG. 1, each first side wall portion 1111 is connected to a positioning portion 131, so that the positioning member 13 covers all the gaps G, and the first array 11 and the second array 12 overlap The joint (between the first array 11 and the second array 12) does not have a gap, so that the light is fully reflected, and the dark line caused by the gap G is avoided, thereby improving the overall image quality. It should be noted that, as shown in FIG. 1, the plurality of positioning portions 131 may have a distance from each other, however, the present invention is not limited to this, and the positioning portions 131 may also be connected to each other. As shown in Fig. 4, the positioning member 13 has an integral structure as a whole.

In view of the above, in another embodiment, there is more than one length of the first side wall portion 1111 between the two adjacent positioning portions 131. In other words, in this embodiment, not every first side wall portion 1111 is the same as the previous embodiment. A positioning portion 131 is connected to the side wall portion 1111. For example, as shown in FIG. 6A, a plurality of positioning portions 131 may be regularly connected to a part of the first side wall portion 1111, that is, the distance between each positioning portion 131 and the adjacent positioning portion 131 is the same; For another example, as shown in FIG. 6B, a plurality of positioning portions 131 may also be irregularly connected to part of the first side wall portion 1111, that is, the distance between different positioning portions 131 and adjacent positioning portions 131 is not complete Same; for another example, as shown in FIG. 6C, the positioning member 13 may only include two positioning portions 131 disposed on both sides of the first array 11 in the longitudinal direction O1.

Please refer to FIG. 3 again. In some embodiments, the first side wall portion 1111 has a first side length L1, the second side wall portion 1211 has a second side length L2, and the positioning member 13 has a positioning length L3, the sum of the second side length L2 and the positioning length L3 is greater than or equal to the first side length L1. Specifically, the first side length L1 here is defined as the distance from the side where the first side wall portion 1111 and the first bottom portion 1113 are connected to the side where the first side wall portion 1111 and the positioning member 13 are connected; The second side length L2 at the position is defined as the distance between the side of the second side wall 1211 and the second bottom 1213 and the side at the top edge of the second side wall 1211; the positioning length L3 here is defined as the positioning The distance between the side of the member 13 that is connected to the first side wall portion 1111 and the side far away from the first side wall portion 1111.

In view of the above, the length of the second side length L2 must be greater than or equal to the difference between the first side length L1 and the positioning length L3. Thus, when the positioning member 13 abuts against the second side wall portion 1211, the positioning member 13 will be partially stacked on A double-layer structure is formed on the second side wall portion 1211, whereby the positioning member 13 can shield the gap G between the first array 11 and the second array 12, and position the first array 11 and the second array 12.

Please refer to FIG. 3 again. In some embodiments, the angle θ1 between the first side wall portion 1111 and the first bottom portion 1113 is less than or equal to the angle θ2 between the second side wall portion 1211 and the second bottom portion 1213. The positioning member 13 abuts against the second side wall portion 1211 so that the second side wall portion 1211 is slightly inclined toward the first side wall portion 1111, and the included angle θ2 between the second side wall portion 1211 and the second bottom portion 1213 is slightly larger than the first side wall portion The included angle θ1 between 1111 and the first bottom 1113. It should be noted that the included angle θ1 between the first side wall portion 1111 and the first bottom portion 1113 is approximately equal to the included angle θ2 between the second side wall portion 1211 and the second bottom portion 1213. Therefore, the positioned portion 131 abuts against the second side wall portion The angle between the second bottom portion 1211 and the second bottom portion 1213 and the angle between the second side wall portion 1211 and the second bottom portion 1213 on the opposite side are approximately the same, so that a better light reflection effect can be maintained.

[Second Embodiment]

Please refer to FIG. 7, which is a partial three-dimensional exploded schematic diagram (1) of the second embodiment of the present invention. The difference between this embodiment and the previous embodiment lies in the arrangement of the positioning elements 13. Here, the positioning member 13 may mainly be composed of a first positioning member 133 and a second positioning member 135. One side of the first positioning member 133 is connected to a part of the first array 11 and the other side abuts against a corresponding part of the second array 12. One side of the second positioning member 135 is connected to a part of the second array 12 and abuts against a corresponding part of the first array 11. It should be noted that in this embodiment, the same parts as in the first embodiment will be marked with the same element symbols, and the same elements and structures will not be repeated.

Please refer to FIG. 7 again. In some embodiments, the first positioning member 133 is composed of a plurality of first positioning portions 1331, the second positioning member 135 is composed of a plurality of second positioning portions 1351, and a plurality of A positioning portion 1331 and a plurality of second positioning portions 1351 are staggered in the longitudinal direction O1. In other words, the first positioning portions are alternately arranged along the longitudinal direction O1 1331, the second positioning portion 1351, the first positioning portion 1331, and the second positioning portion 1351; or the second positioning portion 1351, the first positioning portion 1331, the second positioning portion 1351, and the first positioning portion 1331 are alternately arranged.

It should be noted that this embodiment does not limit the plurality of first positioning portions 1331 and the plurality of second positioning portions 1351 to be continuously alternately arranged.

Please refer to FIG. 8A, which is a partial cross-sectional schematic diagram (1) of the second embodiment of the present invention. In some embodiments, the first positioning portion 1331 has two end portions 1331a, 1331b, wherein the end portion 1331a is connected to the first side wall portion 1111 of the first array 11, and the end portion 1331b abuts against the corresponding second side. Wall Department 1211.

Please refer to FIG. 8B. FIG. 8B is a partial cross-sectional view (2) of the second embodiment of the present invention. In some embodiments, the second positioning portion 1351 has opposite ends 1351a, 1351b, wherein the end 1351a is connected to the second side wall portion 1211 of the second array 12, and the end 1351b abuts against the corresponding first The side wall department 1111.

Please refer to Figure 9. Figure 9 is a partial three-dimensional exploded schematic diagram (2) of the second embodiment of the present invention. In some implementations, the first array 11, the second array 12, the first array 11, and the second The arrays 12 are spliced in sequential order, so that an array of suitable size can be spliced.

In this way, by assembling the array reflective structure 1 of fixed size and specifications, it can be applied to panels of different sizes. Specifically, the first array 11 and the second array 12 of the same size and specifications or the first array 11 and the second array 12 of the same size and specifications or of different sizes and specifications can be assembled. The combination of the first array 11 and the second array 12 can assemble the array reflection structure 1 of various sizes, and there is no need to separately manufacture the array reflection structure 1 of each size and specification. This not only can effectively save the mold cost, but also, If local array The reflective structure 1 has flaws and damages, and the flaws or damages are covered by assembly, which can further increase the utilization of defective products of the array reflective structure 1.

Although the technical content of the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Anyone who is familiar with this technique and makes some changes and modifications without departing from the spirit of the present invention should be covered by the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of the attached patent application.

1: Array reflective structure

11: first array

111: first reflection part

1111: The first side wall

12: second array

13: positioning parts

131: Positioning Department

O1: longitudinal direction

O2: horizontal direction

Claims (11)

An array reflection structure of a direct type backlight module includes: a first array, including a plurality of first reflection parts, the first reflection parts are connected along a longitudinal direction, and each of the first reflection parts is located in the first reflection part. Light of a light-emitting element in the part; a second array, including a plurality of second reflecting parts, the second reflecting parts are connected along the longitudinal direction, and each second reflecting part reflects the other one located in the second reflecting part For the light of the light emitting element, there is a gap between the second array and the first array, and the longitudinal direction is substantially parallel to the length direction of the gap; and a positioning member formed by a part of the first reflecting part, And it extends to cover at least a part of the gap and at least a part of the second reflecting part, so that the first array is connected to the second array to form an overall array structure, and the positioning member is shared with at least a part of the second reflecting part Reflect the light of another light-emitting element located in the second reflection part. The array reflection structure of the direct type backlight module according to claim 1, wherein each of the first reflection portions includes a plurality of first side wall portions and a first bottom portion, and the first side wall portions are connected to the first bottom portion. The bottom portion forms an accommodating space, and the positioning member is connected to the top end of at least one first side wall portion. The array reflection structure of the direct type backlight module according to claim 1, wherein the positioning member includes a plurality of positioning portions, each of the first reflecting portions includes a first side wall portion, and one positioning portion is connected to one of the first One side wall. The array reflection structure of the direct type backlight module according to claim 3, wherein each of the first side wall portions is connected with the positioning portion. According to claim 3, the array reflection structure of the direct type backlight module, wherein the two adjacent positioning portions are separated by more than one length of the first side wall portion. The array reflective structure of the direct type backlight module according to claim 2, wherein each of the second reflective portions includes a plurality of second side wall portions and a second bottom portion, and the second side wall portions are connected to the second bottom portion. The bottom part forms an accommodating space. The array reflection structure of the direct type backlight module according to claim 6, wherein the first side wall portion has a first side length, the second side wall portion has a second side length, and the positioning member has a The positioning length, the sum of the second side length and the positioning length is greater than or equal to the first side length. The array reflection structure of the direct type backlight module according to claim 6, wherein the angle between the first side wall portion and the first bottom is less than or equal to the angle between the second side wall portion and the second bottom. The array reflective structure of the direct type backlight module according to claim 1, wherein the first reflective portions are connected in a lateral direction, and the lateral direction is perpendicular to the longitudinal direction. The array reflection structure of the direct type backlight module according to claim 1, wherein the positioning member includes a first positioning member and a second positioning member, and one side of the first positioning member is connected to a part of the first array and The other side abuts against a corresponding part of the second array, and one side of the second positioning member is connected to a part of the second array and abuts against a corresponding part of the first array. The array reflection structure of the direct type backlight module according to claim 10, wherein the first positioning member includes a plurality of first positioning portions, the second positioning member includes a plurality of second positioning portions, and the first positioning portions are connected to The second positioning parts are staggered in the longitudinal direction.

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