Semicircular visual angle control diaphragm and display device thereof

Abstract

The utility model relates to a semicircular visual angle control diaphragm and a display device thereof. The semicircular visual angle control diaphragm comprises a light transmitting part; the plurality of light control parts are arranged in the light control parts at intervals; wherein the light incident side of the light control part is provided with a low refraction part, and the section of the low refraction part is of a semicircular structure or an arc-shaped structure; through the refraction interfaces arranged between the two sides of the light control part and the light transmission part and the curved surface interface of the low refraction part, the incident light from the incident light side is totally reflected to the emergent light side, the incident light cannot be lost, the brightness is improved, and better visual control is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to display technical field especially relates to a semicircular visual angle control diaphragm and display device thereof. BACKGROUND

[0002] In today's society, protecting personal privacy has become a very important issue.

[0003] Therefore, light control film (LCF) is used for various displays such as notebook computers and mobile phones, and the demand for them is gradually increasing. In particular, in recent years, light control film has been widely used in vehicle displays, as the display inside the vehicle is reflected on the windshield and hinders the driver's view, in addition, when the height of the display and the height of the driver's field of view are different, the visual angle control function becomes more important, which requires a large amount of light to be emitted only in the driver's field of view.

[0004] The existing light control film is composed of a light-transmitting part and an optical control part, and these structures are usually composed of a rectangular shape. Since it is composed of a plane between the two interfaces of the light-transmitting part and the light control part, the angle of the emitted light is determined by the angle of the incident light, which indicates that the control of the visual angle is limited. SUMMARY

[0005] The utility model discloses a semicircular visual angle control diaphragm and display device thereof, which is aimed at the deficiencies of the prior art. The refractive interface and the curved surface interface of the low-refraction part provided between the two sides of the light control part and the light-transmitting part make the incident light from the light-incoming side pass through total reflection to the light-emitting side, so that the incident light is not lost, the brightness is improved, and better visual control is achieved.

[0006] The utility model discloses the following technical scheme:

[0007] A semicircular visual angle control diaphragm comprises:

[0008] A light-transmitting part;

[0009] A plurality of light control parts are arranged in the light control part at intervals;

[0010] Among them,

[0011] The light-incoming side of the light control part is provided with a low-refraction part, and the cross section of the low-refraction part is a semicircular structure or an arc structure.

[0012] Further, the cross section of the light control part is a trapezoidal shape, and the end close to the light-incoming side is wider than the end close to the light-emitting side. The light control part is a trapezoidal shape with an asymmetric cross section.

[0013] Further, the top of the low-refraction part is provided with a curved surface interface, and the two sides of the light control part and the light-transmitting part are provided with a refractive interface.

[0014] Further, the light-transmitting part, the light-controlling part and the low-refraction part are light-transmitting materials of different materials, wherein the refractive indexes of the light-transmitting part, the light-controlling part and the low-refraction part are N3, N2 and N1 respectively, and N3>N2>N1.

[0015] Further, the low-refraction part is a cavity containing air or a low-refraction material.

[0016] In another aspect, the utility model also provides a display device, including display panel and setting in the light-emitting side of the display panel the semicircular visual angle control film piece.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model is applied to smart mobile phone, vehicle display product, through the refraction interface and the curved surface interface of the low-refraction part between the light-controlling part both sides and the light-transmitting part, make the incident light from the light-incoming side pass through total reflection to the light-emitting side, the incident light will not lose, improve the brightness, realize better visual control. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the sectional view structural schematic diagram of the utility model;

[0020] Figure 2 It is the refraction route effect drawing of the incident light in the utility model.

[0021] Figure 3 It is the structure schematic of the utility model Figure 1 ;

[0022] Figure 4 It is the structure schematic of the utility model Figure 2 .

[0023] REFERENCE NUMERALS

[0024] 10, light-controlling part, 11, low-refraction part, 12, refraction interface, 13, curved surface interface, 20, light-transmitting part, 30, light-incoming side, 40, light-emitting side. DETAILED DESCRIPTION

[0025] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor should belong to the protection scope of the utility model.

[0026] Embodiment 1

[0027] As shown in Figure 1 A semi-circular view angle control film, comprising: a light transmission part 20;

[0028] A plurality of light control parts 10 are arranged in the light control part 10.

[0029] The light control part 10 is provided with a low-refraction part 11 on the light-in side 30, and the cross section of the low-refraction part 11 is a semi-circular structure or an arc structure.

[0030] The cross section of the light control part 10 is wider at the end close to the light-in side 30 than at the end close to the light-out side 40. The light control part is a trapezoidal structure with an asymmetric cross section.

[0031] In the embodiment, the width L of the wide mouth end of the light control part 10 is 8-12 μm, the width U of the narrow mouth end of the light control part 10 is 1-8 μm, the distance P between the wide mouth end of the light control part 10 and the wide mouth end of the adjacent light control part 10 on the same side is 30-45 μm, and the height h of the light control part 10 is 100-150 μm.

[0032] Further, the light control part 10 is of an asymmetric structure. In the embodiment, two perpendicular lines are arranged from the narrow mouth end to the wide mouth end of the light control part 10, the angle θ1 on the right side is 0-3°, and the angle θ2 on the left side is 3-6°.

[0033] The low-refraction part 11 is provided with a curved interface 13 on the top, and the light control part 10 is provided with a refractive interface 12 between the two sides and the light transmission part 20.

[0034] As shown in Figure 2 The light transmission part 20, the light control part 10 and the low-refraction part 11 are of transparent materials of different materials, wherein the refractive indexes of the light transmission part 20, the light control part 10 and the low-refraction part 11 are N3, N2 and N1 respectively, and N3>N2>N1.

[0035] The low-refraction part 11 forms a space with a low-refraction index N3, and the light incident from the bottom will not be lost, so the brightness can be increased. In the embodiment, the light transmission part 20, the light control part 10 and the low-refraction part 11 are made of transparent materials of different materials, and N3>N2>N1. The low-refraction part 11 is relatively thin, the curved interface 13 of the low-refraction part can be transmitted, the transmitted light is upwardly increased through total reflection, so the brightness can be increased. The refractive interface 12 arranged between the two sides of the light control part 10 and the light transmission part 20 is relatively inclined, so more light can be refracted, and the display effect in the full angle range can be enhanced. Therefore, the semi-circular view angle control film can realize the total reflection effect in brightness.

[0036] Further, the low-refraction part 11 can be a cavity containing air or a low-refraction material.

[0037] Embodiment 2

[0038] A display device comprising a display panel and a semi-circular viewing angle control film as described in embodiment 1 disposed on the light exit side 40 of the display panel.

[0039] The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A semi-circular view angle control diaphragm, characterized by, It comprises: Light transmission part (20); A plurality of light control part (10), arranged in the light control part (10) is spaced; wherein, The light control part (10) of the light side (30) is provided with low refractive part (11), the cross section of the low refractive part (11) is semicircular structure or arc structure.

2. The semicircular view angle control film according to claim 1, wherein: The cross section of the light control part (10) is trapezoidal, and the width of the end close to the light side (30) is wider than that of the end close to the light exit side (40).

3. The semicircular view angle control film according to claim 2, wherein: The light control part (10) is a trapezoidal structure with asymmetric cross section.

4. The semicircular view angle control film according to claim 1, wherein: The top of the low refractive part (11) is provided with a curved interface (13).

5. The semicircular view angle control film according to claim 1, wherein: The light control part (10) is provided with a refractive interface (12) between the two sides and the light transmission part (20).

6. The semicircular view angle control film according to claim 1, wherein: The light transmission part (20), the light control part (10) and the low refractive part (11) are light transmission materials made of different materials, wherein the refractive indexes of the light transmission part (20), the light control part (10) and the low refractive part (11) are N3, N2 and N1 respectively, and N3>N2>N1.

7. The semicircular view angle control film according to claim 6, wherein: The low refractive part (11) is a cavity containing air or a low refractive material.

8. A display device, characterized by comprising: It comprises a display panel and a semicircular view angle control film according to any one of claims 1-7 arranged on the light exit side (40) of the display panel.

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