Optical function board and display device

Abstract

The embodiment of the utility model provides an optical function board and a display device.The optical function board is provided with a light-in face and a light-out face which are oppositely arranged, the light-in face is provided with a first light-in area and two second light-in areas, and the two second light-in areas are arranged on the two opposite sides of the first light-in area in the first direction; the first light incidence area is provided with a scattering structure part, and the second light incidence area is provided with a light condensation structure part.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an optical functional board and a display device. Background Art

[0002] In the related art, a direct-type backlight display device sets a backlight source on the back side of a display panel and uses the backlight source to directly illuminate the corresponding area of ​​the display panel. In order to ensure a better display effect, a direct-type backlight display device needs to be provided with a large number of light-emitting elements, so the manufacturing cost and power consumption are high. Utility Model Content

[0003] The embodiments of the present application provide an optical functional panel and a display device, which can reduce the manufacturing cost and power consumption of a direct-type backlight display.

[0004] On the one hand, an embodiment of the present application provides an optical functional plate having a light incident surface and a light emitting surface that are relatively arranged, the light incident surface having a first light incident area and two second light incident areas, the two second light incident areas are arranged on opposite sides of the first light incident area along a first direction, the first light incident area is provided with a scattering structure portion, and the second light incident area is provided with a focusing structure portion.

[0005] In some embodiments, the scattering structure portion is a micro-prism portion, and the focusing structure portion is a micro-lens portion.

[0006] In some embodiments, a microstructure portion is disposed on the light emitting surface, and the microstructure portion is a microprism portion or a microlens portion.

[0007] In some embodiments, the optical functional plate includes a first plate layer, a diffusion plate layer, and a second plate layer stacked in sequence, the light incident surface is a side surface of the first plate layer away from the diffusion plate layer, and the light emitting surface is a side surface of the second plate layer away from the diffusion plate layer.

[0008] In some embodiments, the diffuser layer is a foamed diffuser layer.

[0009] In some embodiments, the optical functional plate is a co-extruded multi-layer composite plate.

[0010] In some embodiments, the first direction is a width direction of the optical functional plate.

[0011] In some embodiments, the optical functional plate also includes two third light entrance areas, and the two third light entrance areas are arranged on opposite sides of the first light entrance area along the second direction, and the first direction is perpendicular to or inclined at an angle to the second direction; the opposite ends of the third light entrance area along the first direction are respectively connected to the two second light entrance areas, and the third light entrance area is provided with the light focusing structure portion.

[0012] On the other hand, an embodiment of the present application provides a display device, comprising the optical functional plate provided by any of the above embodiments.

[0013] In some embodiments, the display device also includes a luminous light bar, the light incident surface of the optical functional panel is arranged toward the luminous light bar, the luminous light bar is arranged corresponding to the first light incident area, and the extension direction of the luminous light bar is perpendicular to or inclined at an angle to the first direction.

[0014] The embodiment of the present application arranges a scattering structure portion in the first light entrance area and a focusing structure portion in the second light entrance area. On the one hand, the scattering structure portion can be used to scatter part of the light from the first light entrance area to the second light entrance area, so that the amount of light incident from the first light entrance area is significantly reduced, while the amount of light incident from the second light entrance area is significantly increased, so that the illumination intensities of the first light entrance area and the second light entrance area are relatively close. On the other hand, the focusing structure portion can be used to focus and brighten the light irradiated to the second light entrance area, and further increase the light output brightness of the area on the light exit surface corresponding to the second light entrance area, so that the light output brightness of different areas on the light exit surface is relatively close. In this way, the light-emitting elements of the backlight source can be arranged more concentratedly in the area facing the first light entrance area, while no light-emitting elements or only a small number of light-emitting elements are arranged in the area facing the second light entrance area. When only a small number of light-emitting elements are arranged in this way, a relatively uniform light-emitting display effect can still be obtained, thereby reducing the number of light-emitting elements required to be used, and reducing the manufacturing cost and power consumption of the direct-type backlight display. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a cross-sectional structural diagram of an optical functional plate provided in some embodiments of the present application;

[0017] Figure 2 is a projection structure diagram of an optical functional plate provided in some embodiments of the present application;

[0018] Figure 3 It is a cross-sectional structural diagram of a display device provided in some embodiments of the present application.

[0019] Description of main component symbols:

[0020] 1-display device, 10-optical functional plate, 11-first plate layer, 111-light incident surface, 1111-first light incident area, 1112-second light incident area, 1113-third light incident area, 1114-scattering structure part, 1115-light focusing structure part, 12-diffusion plate layer, 13-second plate layer, 131-light emitting surface, 1311-microstructure part, 20-luminous light strip. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0024] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values ​​can be based on additional conditions or values ​​beyond the stated values ​​in practice.

[0025] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0026] like Figure 1 As shown, on the one hand, an embodiment of the present application provides an optical functional plate 10, which is suitable for application in a direct-type backlight display, and can reduce the manufacturing cost and power consumption of the direct-type backlight display.

[0027] The optical functional plate 10 has a light incident surface 111 and a light emitting surface 131 which are arranged opposite to each other. The light incident surface 111 and the light emitting surface 131 are two opposite surfaces of the optical functional plate 10 along the thickness direction thereof. When the optical functional plate 10 is applied to a direct-type backlight display, the light incident surface 111 and the light emitting surface 131 can be arranged in sequence along the light emitting display direction of the direct-type backlight display; the light emitting surface 131 is arranged toward the viewing side where the user is located, and the light incident surface 111 is arranged away from the viewing side where the user is located.

[0028] The light incident surface 111 has a first light incident area 1111 and two second light incident areas 1112, and the two second light incident areas 1112 are arranged on opposite sides of the first light incident area 1111 along the first direction; in other words, one of the second light incident areas 1112 is arranged on one side of the first light incident area 1111 along the first direction, and the other second light incident area 1112 is arranged on the other side of the first light incident area 1111 along the first direction. The specific orientation of the first direction can be determined according to actual needs, for example, it can be different directions such as the length direction and the width direction of the optical functional board 10, and the embodiment of the present application does not limit this. Here, the first light incident area 1111 is provided with a scattering structure part 1114, and the scattering structure part 1114 can scatter at least part of the light irradiated to the first light incident area 1111; the second light incident area 1112 is provided with a focusing structure part 1115, and the focusing structure part 1115 can focus and brighten at least part of the light irradiated to the second light incident area 1112.

[0029] When the optical functional panel 10 is used in a direct-type backlight display, the light-emitting elements of the backlight source can be arranged more concentratedly in the area facing the first light entrance area 1111, while no light-emitting elements are arranged or only a smaller number of light-emitting elements are arranged in the area facing the second light entrance area 1112, so that the first light entrance area 1111 is arranged directly facing the backlight source, and the second light entrance area 1112 is arranged diagonally facing the backlight source. When the backlight source is emitting light, more light is irradiated to the first light entrance area 1111, while less light is irradiated to the second light entrance area 1112, so that the light intensity directly irradiated to the first light entrance area 1111 and the second light entrance area 1112 is greatly different, and the distribution of the directly incident light is relatively uneven; among the part of the light irradiated to the first light entrance area 1111, a part of the light enters the optical functional plate 10 from the first light entrance area 1111, and is displayed from the area corresponding to the first light entrance area 1111 on the light exit surface 131, while the other part of the light is scattered by the scattering structure part 1114 to the second light entrance area 1112, and together with the light directly irradiated from the backlight source to the second light entrance area 1112, it is condensed and brightened by the focusing structure part 1115, and then enters the optical functional plate 10, and is displayed from the area corresponding to the second light entrance area 1112 on the light exit surface 131.

[0030] In this way, the optical functional plate 10 provided in the embodiment of the present application can, on the one hand, utilize the scattering structure part 1114 to scatter part of the light from the first light entrance area 1111 to the second light entrance area 1112, so that the amount of light incident from the first light entrance area 1111 is significantly reduced, while the amount of light incident from the second light entrance area 1112 is significantly increased, so that the illumination intensity of the first light entrance area 1111 and the second light entrance area 1112 are relatively close, and on the other hand, the focusing structure part 1115 can be utilized to focus and brighten the light irradiated to the second light entrance area 1112, and further increase the light output brightness of the area on the light exit surface 131 corresponding to the second light entrance area 1112, so that the light output brightness of different areas on the light exit surface 131 is relatively close, and a relatively uniform light-emitting display effect can still be obtained when only a small number of light-emitting elements are set, thereby reducing the number of light-emitting elements required to be used, and reducing the manufacturing cost and power consumption of the direct-type backlight display.

[0031] The specific structural type of the scattering structure 1114 can be determined according to actual needs, and various microstructure types that can achieve a scattering effect can be used, and the present application embodiment does not limit this. In some embodiments, the scattering structure 1114 can be a microprism portion; the microprism portion is formed in the first light incident area 1111 along the direction from the light emitting surface 131 to the light incident surface 111, and has a better scattering effect.

[0032] The specific structural type of the light-focusing structure 1115 can be determined according to actual needs, and various microstructure types that can achieve the light-focusing effect can be used, which is not limited in the embodiments of the present application. In some embodiments, the light-focusing structure 1115 can be a microlens portion; the microlens portion is formed in the second light-entering area 1112 along the direction from the light-emitting surface 131 to the light-entering surface 111, and has a better light-focusing effect. In addition, the microlens portion also has a light-homogenizing effect, which can make the light irradiated to the second light-entering area 1112 more evenly distributed.

[0033] In some embodiments, a microstructure portion 1311 may be provided on the light-emitting surface 131. The microstructure portion 1311 may optically condition the light emitted from the light-emitting surface 131 to achieve corresponding optical effects such as brightening / uniform light, which is not limited in the embodiments of the present application. The specific structural type of the microstructure portion 1311 may be determined according to actual functional requirements, and may be, for example, a microprism portion or a microlens portion, which is not limited in the embodiments of the present application. In some examples, the microstructure portion 1311 may be a microprism portion; the microprism portion is formed on the light-emitting surface 131 along a direction from the light-entering surface 111 to the light-emitting surface 131, which may improve the brightness of the light emitted from the light-emitting surface 131. In other examples, the microstructure portion 1311 may be a microlens portion; the microlens portion is formed on the light-emitting surface 131 along a direction from the light-entering surface 111 to the light-emitting surface 131, which may improve the uniformity of the light emitted from the light-emitting surface 131.

[0034] The layer structure of the optical functional plate 10 can be determined according to actual needs, and can be a single-layer structure or a multi-layer composite structure, which is not limited in the embodiments of the present application. In some embodiments, the optical functional plate 10 can have a multi-layer composite structure, correspondingly including a first plate layer 11, a diffuser plate layer 12, and a second plate layer 13 stacked in sequence; the light incident surface 111 is a side surface of the first plate layer 11 away from the diffuser plate layer 12, and the light emitting surface 131 is a side surface of the second plate layer 13 away from the diffuser plate layer 12. Here, the scattering structure part 1114 and the focusing structure part 1115 are formed together on the side surface of the first plate layer 11 away from the diffuser plate layer 12; the diffuser plate layer 12 can diffuse the light emitted from the first plate layer 11 uniformly, and further improve the light uniformity and brightness consistency of different areas on the light emitting surface 131. When the light emitting surface 131 of the optical functional plate 10 is provided with the above-mentioned microstructure portion 1311 , the microstructure portion 1311 can also be formed on a surface of the second plate layer 13 away from the diffusion plate layer 12 .

[0035] The type of the diffusion plate layer 12 can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, the diffusion plate layer 12 can be a foamed diffusion plate layer 12, and bubbles are provided in the foamed diffusion plate layer 12, and the bubbles can scatter light. Here, the foamed diffusion plate layer 12 is formed by a foaming process, so that the foamed diffusion plate layer 12 has bubbles.

[0036] The molding process of the optical functional plate 10 can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, the optical functional plate 10 can be a co-extruded multi-layer composite plate, and the co-extrusion process is used to simultaneously form a multi-layer composite structure such as the first plate layer 11, the diffuser plate layer 12, and the second plate layer 13. In other embodiments, each layer structure such as the first plate layer 11, the diffuser plate layer 12, and the second plate layer 13 can be firstly made separately, and then each layer structure is bonded and fixed by a bonding process to obtain the optical functional plate 10.

[0037] In some embodiments, the first direction may be the width direction of the optical functional plate 10. In this way, the propagation path from the scattering structure 1114 to the second light entrance area 1112 can be reduced, the number of scattering structure 1114 involved in the scattering effect can be increased, and the light intensity of different areas on the optical functional plate 10 can be close.

[0038] like Figure 2 As shown, in some embodiments, the optical functional plate 10 may further include two third light entrance areas 1113, and the two third light entrance areas 1113 are arranged on opposite sides of the first light entrance area 1111 along the second direction; in other words, one of the third light entrance areas 1113 is arranged on one side of the first light entrance area 1111 along the second direction, and the other third light entrance area 1113 is arranged on the other side of the first light entrance area 1111 along the second direction. Here, the first direction and the second direction may be perpendicular or inclined at an angle; for example, the first direction may be the width direction of the optical functional plate 10, and the second direction may be the length direction of the optical functional plate 10. Here, the two opposite ends of the third light entrance area 1113 along the first direction can be connected to the two second light entrance areas 1112 respectively, and the third light entrance area 1113 is also provided with a light focusing structure portion 1115, so that the two second light entrance areas 1112 and the two third light entrance areas 1113 are connected and arranged around the outer peripheral side edge of the first light entrance area 1111, thereby improving the display brightness of each side edge area on the display panel and achieving a display visual effect with relatively uniform brightness.

[0039] like Figure 3As shown, on the other hand, an embodiment of the present application provides a display device 1, which includes the optical functional board 10 provided by any of the above embodiments. Here, the display device 1 can be a direct-type device based on the principle of direct-type backlight display. The purpose of the display device 1 can be determined according to actual needs. It can be used as a complete machine with display function such as a television, a monitor, etc., or it can be used as a display component in an electronic device with display function such as a personal computer, a smart phone, a tablet computer, etc., which is not limited by the embodiment of the present application. The display device 1 provided in the embodiment of the present application has the above-mentioned optical functional board 10, and a relatively uniform light-emitting display effect can still be obtained when only a small number of light-emitting elements are set, thereby reducing the number of light-emitting elements required to be used, and reducing the manufacturing cost and power consumption of the direct-type backlight display.

[0040] In some embodiments, the display device 1 may further include a light bar 20. The light incident surface 111 of the optical functional board 10 may be arranged toward the light bar 20, the light bar 20 may be arranged corresponding to the first light incident area 1111, and the extension direction of the light bar 20 may be perpendicular to or inclined at an angle to the first direction. Here, the light bar 20 may include a plurality of light emitting elements arranged in sequence; the type of the light emitting element may be determined according to actual needs, and may be, for example, MicroLED, MiniLED, etc., which is not limited in the embodiments of the present application.

[0041] The number of the light strips 20 can be determined according to actual needs, and can be one or more, which is not limited in the present embodiment. When the display device 1 includes a plurality of light strips 20, the plurality of light strips 20 can be arranged in an array at intervals, or can be further arranged on the same substrate to form a light board.

[0042] The optical functional panel and display device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An optical functional plate, characterized in that: It has a light incident surface and a light emitting surface that are relatively arranged, the light incident surface has a first light incident area and two second light incident areas, the two second light incident areas are arranged on opposite sides of the first light incident area along a first direction, the first light incident area is provided with a scattering structure part, and the second light incident area is provided with a focusing structure part.

2. The optical functional plate according to claim 1, characterized in that: The scattering structure part is a micro-prism part, and the focusing structure part is a micro-lens part.

3. The optical functional plate according to claim 1, characterized in that: A microstructure portion is disposed on the light emitting surface, and the microstructure portion is a microprism portion or a microlens portion.

4. The optical functional plate according to any one of claims 1 to 3, characterized in that: The optical functional plate includes a first plate layer, a diffusion plate layer and a second plate layer stacked in sequence, the light incident surface is a side surface of the first plate layer away from the diffusion plate layer, and the light emitting surface is a side surface of the second plate layer away from the diffusion plate layer.

5. The optical functional plate according to claim 4, characterized in that: The diffusion plate layer is a foamed diffusion plate layer.

6. The optical functional plate according to claim 4, characterized in that: The optical functional plate is a co-extruded multi-layer composite plate.

7. The optical functional plate according to claim 1, characterized in that: The first direction is a width direction of the optical functional plate.

8. The optical functional plate according to claim 1, characterized in that: The optical functional plate also includes two third light entrance areas, and the two third light entrance areas are arranged on opposite sides of the first light entrance area along the second direction, and the first direction is perpendicular to or inclined at an angle to the second direction; the opposite ends of the third light entrance area along the first direction are respectively connected to the two second light entrance areas, and the third light entrance area is provided with the focusing structure portion.

9. A display device, characterized in that: An optical functional plate comprising the optical functional plate according to any one of claims 1 to 8.

10. The display device according to claim 9, characterized in that: The display device further includes a light bar, the light incident surface of the optical functional plate is arranged toward the light bar, the light bar is arranged corresponding to the first light incident area, and the extension direction of the light bar is perpendicular to or inclined at an angle to the first direction.

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