TWM496138U - Condenser lens - Google Patents

Description

Concentrating film

The present invention relates to a concentrating sheet, and more particularly to a concentrating sheet having columns of different heights.

In general, a liquid crystal display backlight module generally uses a prism sheet having a Prism Rod structure to increase the brightness of the front view of the screen.

The conventional concentrating sheet has a substrate and a plurality of columns which are arranged parallel to each other in a specific direction on the substrate and have the same height and width. The concentrating sheet can enhance the brightness of the front view of the screen by means of direct refraction, TIR reflection and second reflection. However, since the concentrating sheet has a plurality of identical masts, it is easy for the user to perceive the mast if there is a defect in the manufacturing process. In addition, since the heights of the columns on the substrate are equal, the other films in the backlight module adjacent to the concentrating sheet, such as the diffusion sheet (Diffuser) and the concentrating sheet, lack support points, thereby causing the diffusion sheet. It is too close to the concentrating sheet to have a Wet-Out phenomenon. On the other hand, the currently known panels are all arranged by a number of regular pixels. (Pixel), and the concentrating sheet also has a regularly arranged mast, which will cause interference between the grid (pixels on the panel) and the grid (the mast on the concentrating sheet). It is the generation of Morie, which affects the generation of the screen.

Accordingly, it is an object of the present invention to provide a concentrating sheet which improves the above disadvantages.

Therefore, in some implementations, the concentrating sheet of the present invention comprises: a substrate, a plurality of first cymbal groups, and a plurality of second cymbal groups.

The first stacks are spaced apart from each other, and each includes at least one first mast extending in a direction on the substrate, and the bottom of each of the first masts is connected to the substrate, and each The width of the first stack is no more than 200 microns.

The second group of the second group is disposed side by side with the first group of the substrate on the substrate, and each includes at least one second column extending in the direction of the substrate, the second edge The height of the mirror column is smaller than the height of the first masts, and the bottom of each of the second masts is connected to the substrate, and each of the second stacks has a width of no more than 200 micrometers.

In some embodiments, each of the first stacks includes a plurality of first masts, and the first masts are disposed adjacent to each other on the substrate.

In some embodiments, each of the second stacks includes a plurality of second masts, and the second masts are disposed adjacent to each other on the substrate.

In some embodiments, adjacent ones of the first masts and each of the second masts are disposed next to each other on the substrate.

In some embodiments, the height difference of each of the first masts and the height of each of the second masts ranges from 1 micrometer to 3 micrometers.

In some embodiments, each of the first masts has a height ranging from 8 micrometers to 28 micrometers, and each of the second masts has a height ranging from 5 micrometers to 25 micrometers.

In some embodiments, each of the first groups includes a plurality of first columns, and the number of the first columns is two.

In some embodiments, each of the second sets includes a plurality of second columns, and the number of the second columns ranges from 2 to 10.

In some embodiments, each of the first masts has a width ranging between 26 microns and 56 microns.

In some embodiments, each of the first masts has a width ranging between 50 microns and 56 microns.

In some embodiments, each of the second masts has a width ranging from 20 microns to 50 microns.

In some embodiments, each of the second masts has a width ranging from 44 microns to 50 microns.

In some embodiments, each of the first masts and each of the second masts are primarily made of a transparent UV curable material.

In some embodiments, the substrate is made primarily of polyethylene terephthalate or polycarbonate.

The effect of the novel is to improve the warpage and moisture permeability of the substrate through the staggered arrangement of the first group and the second group and the height and width inconsistency between the first column and the second column. The phenomenon also reduces the effects of moiré and defects.

10‧‧‧Spots

1‧‧‧Substrate

2‧‧‧First Group

21‧‧‧ first pillar

3‧‧‧Second Group

31‧‧‧Second column

4‧‧‧Upper diffusion film

A‧‧‧ direction

W1‧‧‧Width range

W2‧‧‧Width range

W3‧‧‧Width range

W4‧‧‧Width range

H1‧‧‧ Height

H2‧‧‧ Height

D1‧‧‧ height difference

The other features and advantages of the present invention will be apparent from the detailed description of the embodiments of the present invention. FIG. 1 is a perspective view illustrating an embodiment of the present concentrating sheet; FIG. 2 is a schematic view illustrating a plurality of first masts and a plurality of second masts of the embodiment; and FIG. 3 is a schematic view illustrating the embodiment and an upper diffuser;

Referring to Figures 1, 2 and 3, an embodiment of the present type of concentrating sheet 10 is a component of a backlight module (BLM) of a liquid crystal display (LCD). The backlight module generally includes a dichroic film 10, an upper diffusion sheet 4 (Top Diffuser) and other components not shown in the figure, such as a light-emitting element, a light guide plate, a lower diffusion sheet, and the like, and for convenience, The condensing sheet 10 will be described as an example. The novel concentrating sheet 10 comprises a substrate 1, a plurality of first cymbal groups 2 and a plurality of second cymbal groups 3.

The substrate 1 can freely penetrate light emitted from a light-emitting element such as a cold cathode lamp or a light-emitting diode. In this embodiment, the substrate 1 is mainly composed of polyethylene terephthalate (Polyethylene Terephthalate, PET) or Polycarbonate (PC), but the material is not limited to this.

The first stack 2 is disposed on the substrate 1 at a distance from each other. And each of the first stacks 2 includes at least one first mast 21 extending in a direction A on the substrate 1, and the bottom of each of the first masts 21 is connected to the substrate 1.

The second group 3 is arranged side by side with the first group 2 On the substrate 1. Each of the second sets 3 includes at least one second mast 31 parallel to the first mast 21 and disposed on the substrate 1, and the height H2 of any of the second masts 31 is less than either first The height H1 of the mast 21 and the bottom of each of the second masts 31 are connected to the substrate 1. Further, any two adjacent first masts 21, second masts 31, and first masts 21 and second masts 31 are disposed adjacent to each other on the substrate 1 in close proximity to each other.

In this embodiment, the first mast 21 and the second mast 31 It is mainly made of a transparent ultraviolet curing material, and the number of the first masts 21 included in each of the first stacks 2 is one or two, and the number of the first masts 21 is preferred. It is two. The number of the second masts 31 included in each of the second stacks 3 ranges from 1 to 10, and the preferred number of the second masts 31 ranges from 2 to 2. Between 10 and 10, but the user can adjust the number of the first mast 21 and the second mast 31 according to the requirements of the use, and not limited to the specific implementation number. In addition, FIGS. 1 to 3 of the present invention draw the first mast 21 and the second mast 31 having a specific number and a specific arrangement relationship, but in different cases. The number and arrangement relationship of the first mast 21 and the second mast 31 are adjusted as needed, and are not limited by the content disclosed in the embodiment.

In addition, in the present embodiment, the width of the first mast 21 is The circumference W1 is between 26 micrometers and 56 micrometers, the width width W2 of the second mast 31 is between 20 micrometers and 50 micrometers, and the preferred width range W1 of the first mast 21 is between Between 50 micrometers and 56 micrometers, the preferred width range W2 of the second mast 31 is between 44 micrometers and 50 micrometers, and the preferred height H1 of each first mast 21 ranges from 8 micrometers. Between 28 microns, the preferred height H2 of each second mast 31 ranges between 5 microns and 25 microns. The preferred height difference D1 between any of the first masts 21 and any of the second masts 31 ranges from 1 micrometer to 3 micrometers. In addition, the preferred width range W3 of each first group 2 and the preferred width range W4 of each second group 3 are not more than 200 micrometers, and the first mast 21 and the second mast The width range W1, W2, the height H1, the height difference D1 of the two, and the width range W3, W4 of the first group 2 and the second group 3 can be adjusted according to the needs of the user. Not limited to what is disclosed here.

Since the condensing sheet 10 of the embodiment is the first cymbal group 2 and The second stack 3 is staggered on the substrate 1, and the height H1 of any of the first masts 21 is greater than the height H2 of any of the second masts 31, which allows the first mast 21 to be as shown 3, the upper diffusion sheet 4 disposed adjacent to one side of the substrate 1 is supported, and the Wet-Out phenomenon caused by the upper diffusion sheet 4 being too close to the substrate 1 can be avoided. And since the bottom of the first mast 21 and the second mast 31 are respectively connected to the substrate 1, the first mast 21 can be alleviated. A warping phenomenon caused by a difference in material from the second mast 31 due to the substrate 1. On the other hand, in the process of manufacturing the first mast 21 and the second mast 31, if any defect is generated on the first mast 21 or the second mast 31, due to the first prism The staggered arrangement of the mirror group 2 and the second stack 3 and the height difference between the first mast 21 and the second mast 31 increase the turbulence of the surface frequency of the concentrating sheet 10, which makes the defect difficult. It is perceived by the user. In addition, the conventionally known panels are composed of a plurality of regularly arranged pixels (Pixels), and the masts 21 and 31 are changed by the first mast 21 and the second mast 31 having different heights and widths. The spatial frequency between them reduces the interference between the pixels on the panel and the masts 21, 31, that is, the effects of the moir.

In summary, the new concentrating sheet 10 passes through the first group The staggered arrangement of 2 with the second stack 3 and the inconsistency between the heights H1, H2 of the first mast 21 and the second mast 31 and the width ranges W1, W2 improve the warpage and wetting of the substrate 1. The phenomenon, while also reducing the effects of the folds and defects, can indeed achieve the purpose of this new type.

However, the above is only an embodiment of the present invention, when The scope of the novel implementation is not limited thereto, that is, the simple equivalent changes and modifications made by the present invention in the scope of the patent application and the contents of the patent specification are still within the scope of the present patent.

10‧‧‧Spots

1‧‧‧Substrate

2‧‧‧First Group

21‧‧‧ first pillar

3‧‧‧Second Group

31‧‧‧Second column

A‧‧‧ direction

Claims (14)

A concentrating sheet comprising: a substrate; a plurality of first cymbal groups spaced apart from each other, and each comprising at least one first mast extending in a direction on the substrate, each of the first cymbals The bottom of the column is connected to the substrate, and the width of each of the first groups is not more than 200 micrometers; and the plurality of second groups are disposed side by side with the first groups of the substrate. And each comprising at least one second mast extending in the direction of the substrate, the height of the second masts being less than the height of the first masts, each of the second masts The bottom portion is connected to the substrate, and each of the second stacks has a width of no more than 200 micrometers. The concentrating sheet of claim 1, wherein each of the first groups includes a plurality of first columns, and the first columns are disposed adjacent to each other on the substrate. The concentrating sheet of claim 1, wherein each of the second groups includes a plurality of second columns, and the second columns are disposed adjacent to each other on the substrate. The concentrating sheet of claim 1, wherein each of the adjacent first masts and each of the second masts are disposed next to each other on the substrate. The concentrating sheet of claim 1, wherein a height difference between each of the first masts and each of the second masts ranges between 1 micrometer and 3 micrometers. The concentrating sheet of claim 1, wherein the height of each of the first masts The range is between 8 microns and 28 microns, and the height of each of the second columns ranges between 5 microns and 25 microns. The concentrating sheet of claim 1, wherein each of the first group includes a plurality of first columns, and the number of the first columns is two. The concentrating sheet of claim 1, wherein each of the second group includes a plurality of second columns, and the number of the second columns ranges between 2 and 10. The concentrating sheet of claim 1, wherein each of the first masts has a width ranging from 26 micrometers to 56 micrometers. The concentrating sheet of claim 1, wherein each of the first masts has a width ranging from 50 micrometers to 56 micrometers. The concentrating sheet of claim 1, wherein each of the second masts has a width ranging from 20 micrometers to 50 micrometers. The concentrating sheet of claim 1, wherein each of the second masts has a width ranging from 44 micrometers to 50 micrometers. The concentrating sheet of claim 1, wherein each of the first masts and each of the second masts are mainly made of a transparent ultraviolet curable material. The concentrating sheet of claim 1, wherein the substrate is mainly made of polyethylene terephthalate or polycarbonate.