Vehicle-mounted display panel capable of improving display visual angle

Abstract

The utility model provides a vehicle-mounted display panel capable of improving a display visual angle, which comprises a visual angle improving layer, and the visual angle improving layer is composed of a first light transmission unit, a second light transmission unit and a light blocking unit which are arranged on the same layer. The first light transmission unit is opposite to an organic light emitting unit in the organic light emitting layer up and down; the first side surface of the first light transmission unit is in contact with the second side surface of the light blocking unit; the second side surface of the first light transmission unit is in contact with the first side surface of the second light transmission unit; the second side surface of the second light transmission unit is in contact with the first side surface of the light blocking unit; the refractive index of the first optical transmission unit is smaller than that of the second optical transmission unit. Reflection of light on the front windshield is effectively reduced, a wider visual angle and a better display effect are provided in the directions of a driver and passengers behind, and therefore the use experience of the operation screen of the cockpit is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, and particularly to a vehicle-mounted display panel for improving the viewing angle. Background Art

[0002] With the continuous development of display technology and the increasing diversification of the application fields of display panels, the market has put forward more diversified requirements for display panels. Especially in some specific application scenarios, such as the operation screen in a vehicle cockpit, there are special requirements for the performance of the display panel. To ensure driving safety and driving experience, these requirements not only involve the display quality itself, but also how to reduce unnecessary visual interference.

[0003] In a vehicle cockpit, as one of the main ways for a driver to obtain information, the display effect of the operation screen directly affects driving safety and comfort. On the one hand, in order to avoid light reflection on the front windshield and interfere with the driver's line of sight, the light emitted by the display panel needs to be effectively controlled to reduce the possibility of it irradiating on the front windshield; on the other hand, in the directions of the driver and rear passengers, the display panel needs to have a larger viewing angle and better display effect to ensure that the information can be clearly visible and not distorted.

[0004] At present, most display panels on the market are not optimized for the above specific requirements. Traditional display panels often cannot effectively control the propagation direction of light, resulting in strong reflection of light on the front windshield, which not only distracts the driver's attention but also may reduce driving safety. In addition, the display effects of existing display panels at different viewing angles are uneven. Especially at the positions of the driver and rear passengers, problems such as narrow viewing angles and color distortion may occur. Summary of the Utility Model

[0005] To solve the above problems, the utility model provides a vehicle-mounted display panel for improving the viewing angle, aiming to improve the user experience.

[0006] A vehicle-mounted display panel for improving the viewing angle includes an organic light-emitting layer and a viewing angle adjustment layer above the organic light-emitting layer. The viewing angle adjustment layer is composed of a first light transmission unit, a second light transmission unit, and a light blocking unit arranged on the same layer;

[0007] The first light transmission unit and the organic light-emitting units in the organic light-emitting layer are vertically opposite;

[0008] The first side of the first light transmission unit is in contact with the second side of the light blocking unit;

[0009] The second side of the first light transmission unit is in contact with the first side of the second light transmission unit;

[0010] The second side surface of the second light transmission unit contacts the first side surface of the light blocking unit;

[0011] The refractive index of the first light transmission unit is less than that of the second light transmission unit.

[0012] Furthermore, the first side surface of the first light transmission unit is perpendicular to the bottom surface of the first light transmission unit.

[0013] Furthermore, the second side surface of the first light transmission unit and the bottom surface of the first light transmission unit form a first obtuse angle.

[0014] Furthermore, the second side surface of the second light transmission unit and the bottom surface of the second light transmission unit form a second obtuse angle.

[0015] Furthermore, the angle of the second obtuse angle is greater than that of the first obtuse angle.

[0016] Furthermore, the display panel includes a substrate, a thin film transistor layer, an organic light emitting unit, a cathode layer, and a packaging layer from bottom to top;

[0017] The viewing angle adjustment layer is disposed on the packaging layer.

[0018] Furthermore, the display panel includes a substrate, a thin film transistor layer, an organic light emitting unit, a cathode layer, a packaging layer, and a touch layer from bottom to top, and the viewing angle adjustment layer is disposed on the touch layer.

[0019] Furthermore, the first side surface, the second side surface, and the bottom surface of the light blocking unit form a right triangle.

[0020] Furthermore, the display panel is an OLED display panel.

[0021] The beneficial technical effects of the present utility model are as follows: By providing the first light transmission unit, the second light transmission unit, and the light blocking layer on the same layer, on one hand, the light emitted by the display layer and incident on the first light transmission unit is reasonably blocked, reducing the vision on the front windshield. On the other hand, because the refractive index of the second light transmission unit is less than that of the first light transmission unit, part of the light entering the first light transmission unit is refracted out by the second light transmission unit again, making the viewing angle of the display panel larger in the directions of the driver and the rear passengers. It can be seen that the display panel of the present utility model can effectively reduce the reflection of light on the front windshield, and provide a wider viewing angle and better display effect in the directions of the driver and the rear passengers, thereby significantly improving the use experience of the cockpit operation screen. Description of the Drawings

[0022] Figure 1Schematic diagram of the stacked structure of a vehicle-mounted display panel for improving the viewing angle according to the present utility model;

[0023] Figure 2 Schematic diagram of the light-emitting angle of a vehicle-mounted display panel for improving the viewing angle according to the present utility model;

[0024] Figure 3 Schematic diagram of the planar layout of the viewing angle adjustment layer of a vehicle-mounted display panel for improving the viewing angle according to the present utility model.

[0025] Among them,

[0026] 1 - First light transmission unit;

[0027] 2 - Second light transmission unit;

[0028] 3 - Light blocking unit;

[0029] 4 - Substrate;

[0030] 5 - Thin film transistor layer;

[0031] 6 - Organic light-emitting unit;

[0032] 7 - Cathode layer;

[0033] 8 - Encapsulation layer;

[0034] 9 - Touch layer. Specific implementation mode

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0036] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0037] Next, the present utility model will be further described in conjunction with the accompanying drawings and specific embodiments, but it is not limited to the present utility model.

[0038] Refer to Figure 1 , the present utility model provides a vehicle-mounted display panel for improving the viewing angle, including an organic light-emitting layer and a viewing angle adjustment layer above the organic light-emitting layer, and the viewing angle adjustment layer is composed of a first light transmission unit (1), a second light transmission unit (2) and a light blocking unit (3) arranged on the same layer;

[0039] The first light transmission unit (1) and the organic light-emitting unit (6) in the organic light-emitting layer are vertically opposite to each other;

[0040] The first side surface of the first light transmission unit (1) is in contact with the second side surface of the light blocking unit (3);

[0041] The second side surface of the first light transmission unit (1) is in contact with the first side surface of the second light transmission unit (2);

[0042] The second side surface of the second light transmission unit (2) is in contact with the first side surface of the light blocking unit (3);

[0043] The refractive index of the first light transmission unit (1) is less than the refractive index of the second light transmission unit (2).

[0044] Specifically, both the first light transmission unit (1) and the second light transmission unit (2) are composed of transparent materials.

[0045] Specifically, the light blocking unit (3) is made of a black material to block the passage of light.

[0046] Specifically, the first light transmission unit (1) is directly above the organic light-emitting unit (6). The organic light-emitting layer includes R, G, and B units.

[0047] Specifically, the materials, relative position arrangements, and shape angles of the first light transmission unit (1), the second light transmission unit (2), and the light blocking unit (3) can be adjusted according to actual requirements.

[0048] See Figure 3 Specifically, the continuous second light transmission unit (2), the first light transmission unit (1), and the light blocking unit (3) form a repeating unit and are repeatedly arranged in the first extension direction of the display panel. The first light transmission unit (1) forms a column in the second extension direction, the second light transmission unit (2) forms a column in the second extension direction, and the light blocking unit (3) forms a column in the second extension direction. The first extension direction and the second extension direction are perpendicular.

[0049] See Figure 2, when the display panel works and emits light, the light emitted by the organic light-emitting unit (6) of the organic light-emitting layer is emitted at a large angle like "Light Ray 1" from a direction far from the perpendicular to the screen. At the interface between the first light transmission unit (1) and the second light transmission unit (2), since the refractive index of the first light transmission unit (1) is less than that of the second light transmission unit (2), the light ray refracts, and the refraction angle of "Light Ray 1" becomes smaller in the second light transmission unit (2), and the direction of the light ray changes. The viewing angle of the display panel in the direction of the second light transmission unit (2) (such as the direction towards the driver and passengers) becomes larger, playing a role in increasing the viewing angle in a specific direction. "Light Ray 2" is blocked by the light blocking unit (3) and cannot be emitted. In the direction of the light blocking unit (3) of the display panel (such as the direction towards the front windshield), the light-emitting angle decreases, playing a role in reducing the light emission in a specific direction.

[0050] By arranging the first light transmission unit, the second light transmission unit, and the light blocking unit on the same layer, on the one hand, the light rays emitted from the display layer and shooting towards the front windshield are reasonably blocked after entering the first light transmission unit, reducing the vision towards the front windshield. On the other hand, because the refractive index of the second light transmission unit is less than that of the first light transmission unit, part of the light rays entering the first light transmission unit are refracted out by the second light transmission unit again, making the viewing angle of the display panel larger in the direction towards the driver and rear passengers. It can be seen that the display panel of the present utility model can effectively reduce the reflection of light on the front windshield and provide a wider viewing angle and better display effect in the direction of the driver and rear passengers, thus significantly improving the use experience of the cockpit operation screen.

[0051] Furthermore, the first side surface of the first light transmission unit (1) is perpendicular to the bottom surface of the first light transmission unit (1).

[0052] The first side surface of the first light transmission unit (1) being perpendicular to the bottom surface of the first light transmission unit (1) means that the interface formed by the first side surface of the first light transmission unit (1) and the second side surface of the light blocking unit (3) is perpendicular to the display panel. Generally, the in-vehicle display panel is installed on the vehicle in an inclined manner. In a repeating unit composed of the continuous second light transmission unit (2), the first light transmission unit (1), and the light blocking unit (3), the direction from the second light transmission unit (2) to the light blocking unit (3) faces the front windshield, and the direction from the light blocking unit (3) to the second light transmission unit (2) faces the driver or passenger direction. In this way, the light blocking unit (3) can effectively block the light emitted from the display panel from being emitted onto the front windshield, and because of the second light transmission unit (2), the viewing angle of the light emitted by the display panel expands towards the passengers.

[0053] Of course, the angle between the first side surface of the first light transmission unit (1) and the bottom surface of the first light transmission unit (1) shown may not be a right angle, and may be an obtuse angle or an acute angle according to actual needs. Compared with a right angle, an obtuse angle makes the display angle towards the windshield a little larger. Compared with a right angle, an acute angle makes the display angle towards the windshield a little smaller. The specific angle size is set according to actual needs.

[0054] Further, a first obtuse angle is formed between the second side surface of the first light transmission unit (1) and the bottom surface of the first light transmission unit (1).

[0055] The first obtuse angle formed between the second side surface of the first light transmission unit (1) and the bottom surface of the first light transmission unit (1) means that the interface between the second side surface of the first light transmission unit (1) and the first side surface of the second light transmission unit (2) is a first obtuse angle. In a repeating unit composed of the continuous second light transmission unit (2), the first light transmission unit (1), and the light blocking unit (3), the direction from the light blocking unit (3) to the second light transmission unit (2) faces the driver or passenger direction, because the first obtuse angle further expands the viewing angle of the light emitted by the display panel towards the passengers.

[0056] Further, a second obtuse angle is formed between the second side surface of the second light transmission unit (2) and the bottom surface of the second light transmission unit (2).

[0057] The second obtuse angle formed between the second side surface of the second light transmission unit (2) and the bottom surface of the second light transmission unit (2) means that the interface between the second side surface of the second light transmission unit (2) and the first side surface of another light blocking unit (3) is a second obtuse angle. In a repeating unit composed of the continuous second light transmission unit (2), the first light transmission unit (1), and the light blocking unit (3), the direction from the light blocking unit (3) to the second light transmission unit (2) faces the driver or passenger direction. Because of the second obtuse angle, in adjacent two repeating units, the light refracted by the second light transmission unit (2) of one repeating unit is not blocked by the light blocking unit (3) of another adjacent repeating unit as much as possible, thereby expanding the display viewing angle towards the passengers and the driver and improving the user experience.

[0058] Further, the angle of the second obtuse angle is greater than the angle of the first obtuse angle.

[0059] The inclination angles of each interface can be set according to actual needs.

[0060] Further, the display panel includes a substrate (4), a thin film transistor layer (5), an organic light emitting unit (6), a cathode layer (7), and a packaging layer (8) from bottom to top;

[0061] The viewing angle adjustment layer is disposed on the encapsulation layer (8).

[0062] If there is no touch layer, the visual improvement layer can be directly disposed on the encapsulation layer (8).

[0063] Furthermore, the display panel includes, from bottom to top, a substrate (4), a thin film transistor layer (5), an organic light emitting unit (6), a cathode layer (7), an encapsulation layer (8), and a touch layer (9), and the viewing angle adjustment layer is disposed on the touch layer (9).

[0064] If there is a touch layer, the visual improvement layer can be disposed on the touch layer.

[0065] Furthermore, the first side surface, the second side surface, and the bottom surface of the light blocking unit (3) form a right triangle.

[0066] Forming a right triangle can minimize the thickness of the light blocking unit (3), block the light radiating to the front windshield, and increase the angle of the light radiating to the driver and passengers.

[0067] Furthermore, the display panel is an OLED display panel.

[0068] Specifically, the display panel further includes a polarizer, and the polarizer is above the visual improvement layer.

[0069] Specifically, the first light transmission unit and the second light transmission unit can be selected from materials such as photoresist, silicone, organic fluoride, polyphenyl compounds, and inorganic oxides. The light blocking unit is a material with low inorganic or organic light transmittance.

[0070] Specifically, the uppermost layer of the display panel further has a CG layer, and the CG layer refers to a Cover Glass layer. The Cover Glass plays a role in protecting the internal structure of the display panel, preventing damage to the display panel caused by external factors such as dust and moisture. Since the Cover Glass is usually made of glass, it has a high surface hardness and can resist minor scratches and impacts.

[0071] The present utility model innovatively prepares film layers with different refractive indices and different transmittances above the organic light emitting layer of the display screen to change the emission light direction in a specific direction of the screen, so as to achieve the effect of improving the viewing angle of the display panel in a specific direction.

[0072] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and drawings of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An in-vehicle display panel for improving the viewing angle, characterized in that It includes an organic light-emitting layer and a viewing angle adjustment layer above the organic light-emitting layer, and the viewing angle adjustment layer is composed of a first light transmission unit, a second light transmission unit, and a light blocking unit provided on the same layer; The first light transmission unit and the organic light-emitting unit in the organic light-emitting layer are vertically opposite to each other; The first side surface of the first light transmission unit contacts the second side surface of the light blocking unit; The second side surface of the first light transmission unit contacts the first side surface of the second light transmission unit; The second side surface of the second light transmission unit contacts the first side surface of the light blocking unit; The refractive index of the first light transmission unit is less than the refractive index of the second light transmission unit.

2. The in-vehicle display panel for improving the viewing angle according to claim 1, wherein, The first side surface of the first light transmission unit shown is perpendicular to the bottom surface of the first light transmission unit.

3. The in-vehicle display panel for improving the viewing angle according to claim 2, wherein, The second side surface of the first light transmission unit and the bottom surface of the first light transmission unit form a first obtuse angle.

4. The in-vehicle display panel for improving the viewing angle according to claim 3, wherein The second side surface of the second light transmission unit and the bottom surface of the second light transmission unit form a second obtuse angle.

5. The in-vehicle display panel for improving the viewing angle according to claim 4, characterized in that, The angle of the second obtuse angle is greater than the angle of the first obtuse angle.

6. The in-vehicle display panel for improving a display viewing angle according to claim 1, wherein, The display panel includes a substrate, a thin-film transistor layer, an organic light-emitting unit, a cathode layer, and a packaging layer from bottom to top; The viewing angle adjustment layer is provided on the packaging layer.

7. An in-vehicle display panel for improving the viewing angle according to claim 1, characterized in that, The display panel includes a substrate, a thin-film transistor layer, an organic light-emitting unit, a cathode layer, a packaging layer, and a touch layer from bottom to top, and the viewing angle adjustment layer is provided on the touch layer.

8. The in-vehicle display panel for improving a display viewing angle according to claim 4, wherein The first side surface, the second side surface, and the bottom surface of the light blocking unit form a right triangle.

9. The in-vehicle display panel for improving a viewing angle according to claim 4, wherein The display panel is an OLED display panel.

Images