Display device and vehicle apparatus

Abstract

The invention discloses a display device which is provided with a display area and a peripheral area. The display device comprises a display panel, a substrate, at least one illumination light emitter, an illumination light penetrating module and a first illumination light reflecting layer. The substrate is located on the light emitting surface of the display panel. The illumination light emitter is used for emitting illumination light. The illumination light penetration module includes a light guide layer, wherein the light guide layer is disposed on a plane defined by a first direction and a second direction. Illuminating light may enter the light guide layer from at least one side of the light guide layer. The first illumination light reflecting layer is arranged on the light guide layer along the stacking direction and is arranged in the peripheral area. The illumination light penetrates through the light guide layer after being reflected by the first illumination light reflecting layer. A vehicle device is also provided.

Description

Technical Field

[0001] This invention relates to a display device and automotive equipment. Background Technology

[0002] In existing automotive devices capable of infrared sensing, the infrared emitter and infrared sensor are typically combined into a single infrared sensing module, which is positioned on the opposite side of the display device's bonding circuit board. This configuration widens the peripheral area of ​​the display device, resulting in poor visual performance. Summary of the Invention

[0003] The present invention provides a display device and an automotive device with excellent optical performance, and the automotive device can have infrared sensing function.

[0004] According to an embodiment of the present invention, a display device is provided, having a display area and a peripheral area surrounding the display area. The display device includes a display panel, a substrate, at least one illumination light emitter, an illumination light transmission module, and a first illumination light reflective layer. The illumination light emitter is used to emit illumination light. The display panel includes a light-emitting surface, wherein the display panel is adapted to emit display information from the light-emitting surface. The substrate is located on the light-emitting surface of the display panel. The illumination light transmission module includes a light guide layer, wherein the light guide layer is disposed on a plane defined by a first direction and a second direction. Illumination light is adapted to enter the light guide layer from at least one side of the light guide layer. The first illumination light reflective layer is disposed on the light guide layer along a stacking direction and within the peripheral area, wherein the illumination light, after being reflected by the first illumination light reflective layer, penetrates the light guide layer. Both the display information and the illumination light are emitted from the substrate of the display device.

[0005] According to one embodiment of the present invention, an automotive device is provided, including the above-described display device and an optical sensor. The optical sensor is used to sense illumination light.

[0006] Based on the above, in the display device and automotive equipment provided according to embodiments of the present invention, the illumination light emitter can be configured separately from the optical sensor, and the illumination light emitter can utilize the existing peripheral area of ​​the display device for light guiding. The illumination light emitter and the optical sensor can be used for infrared sensing. Furthermore, the display device and automotive equipment exhibit excellent visual performance.

[0007] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0008] Figure 1 A schematic diagram of a vehicle device according to some embodiments of the present invention is shown.

[0009] Figure 2 Show Figure 1 A cross-sectional schematic diagram of the display device in the first embodiment of the present invention.

[0010] Figure 3 Show Figure 1 A cross-sectional schematic diagram of the display device in the second embodiment of the present invention.

[0011] Figure 4A A schematic diagram of a display device according to a third embodiment of the present invention is shown. Figure 4B Show along Figure 4A A schematic diagram of the cross-section of line AA'.

[0012] Figure 5 A schematic diagram of a display device according to a fourth embodiment of the present invention is shown.

[0013] In the attached figures, the following labels are used:

[0014] 1, 2, 3: Display device

[0015] 10: Base

[0016] 20: Display panel

[0017] 20E: Light-emitting surface

[0018] 30: Black ink layer

[0019] 100: Illumination light transmission module

[0020] 101: Light guide layer

[0021] 102: Optical layer

[0022] 103: Pattern Layer

[0023] 200: Illumination light emitter

[0024] 300, 300A, 300B: Illumination light reflector layer

[0025] 1000: Automotive Equipment

[0026] AR: Display Area

[0027] SB:Substrate

[0028] IL: Illuminating light

[0029] IM: Display Information

[0030] PR: Surrounding Area

[0031] SR: Optical Sensor Detailed Implementation

[0032] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0033] Reference Figure 1 This diagram illustrates a vehicle-mounted device according to some embodiments of the present invention. The vehicle-mounted device 1000 includes a display device 1 and an optical sensor SR.

[0034] Simultaneously refer to Figure 1 as well as Figure 2 ,in Figure 2 Show Figure 1 A cross-sectional schematic diagram of the display device in a first embodiment of the present invention.

[0035] In a first embodiment of the present invention, the display device 1 has a display area AR and a peripheral area PR surrounding the display area AR, and the display device 1 includes a display panel 20, a substrate SB, a plurality of illumination light emitters 200, an illumination light transmission module 100, and an illumination light reflection layer 300.

[0036] The display panel 20 includes a light-emitting surface 20E and can be, for example, a light-emitting diode display panel, an organic light-emitting diode display panel, a liquid crystal display panel with a backlight module, and the like. Therefore, the display panel 20 can emit display information IM from its light-emitting surface 20E.

[0037] The substrate SB can be, for example, the cover glass of the display device 1, and is located on the light-emitting surface 20E of the display panel 20. Accordingly, the display information IM provided by the display panel 20 can be emitted from the substrate SB into the display device 1. Figure 2 As shown.

[0038] The illumination light emitters 200 can be disposed on a substrate 10, which may be, for example, the bezel of the display device 1, but is not limited thereto. Each illumination light emitter 200 can be driven by a circuit board to emit illumination light IL. The illumination light IL may include, for example, infrared light, but is not limited thereto.

[0039] The illumination light transmission module 100 may include at least a light guide layer 101. In this first embodiment, the light guide layer 101 is part of the substrate SB. The light guide layer 101 is disposed on a plane defined by the X and Y directions, and the illumination light IL can enter the light guide layer 101 (i.e., enter the substrate SB) from at least one side of the light guide layer 101 (i.e., at least one side of the substrate SB of the display device 1), such as... Figure 2 As shown.

[0040] The illumination light reflector layer 300 is disposed within the peripheral area PR and is disposed on the light guide layer 101 along the -Z direction.

[0041] like Figure 2 As shown, the illumination light IL emitted by the illumination light emitter 200 enters the light guide layer 101 from one side. At least a portion of the illumination light IL can be reflected by the illumination light reflective layer 300, thereby penetrating the light guide layer 101 and entering the air (i.e., the illumination light IL is emitted from the substrate SB of the display device 1). In a preferred embodiment, the illumination light reflective layer 300 may have a reflectivity greater than 90% for the illumination light IL from the illumination light emitter 200, but is not limited thereto.

[0042] In some embodiments, the illumination light IL includes infrared light, the illumination light reflective layer 300 is white paint that can reflect infrared light, and the display device 1 can be equipped with an optical sensor SR that can detect infrared light to perform infrared sensing.

[0043] exist Figure 1 In the illustrated architecture, the optical sensor SR is disposed within the display area AR of the display device 1. Specifically, the optical sensor SR can be hidden between the pixel array and the backplate of the display device 1. However, the invention is not limited thereto; in some embodiments, the optical sensor SR can be disposed in the peripheral area PR of the display device 1, or disposed outside the display device 1.

[0044] It should be noted that in existing automotive devices capable of infrared sensing, the infrared emitter and infrared sensor are typically combined into a single infrared sensing module, which is positioned on the opposite side of the display device's circuit board. In this configuration, the infrared sensing module widens the peripheral area of ​​the display device, thus reducing its visual performance.

[0045] Conversely, in the vehicle device 1000 according to some embodiments of the present invention, the illumination light emitter 200 for emitting infrared light is disposed on the side of the display device 1 for bonding a circuit board (e.g., a PCB board), and is disposed separately from the optical sensor SR, such as... Figure 1 As shown. The optical sensor SR can be disposed within the display area AR of the display device 1 using under-display technology, therefore the optical sensor SR does not cause the peripheral area PR of the display device 1 to widen. More importantly, the illumination light emitter 200 disposed on the same side as the circuit board of the display device 1 can use the existing peripheral area PR of the display device 1 on that side for light guiding, therefore, it also does not cause the peripheral area PR of the display device 1 to widen. Through the above configuration, the visual performance of the automotive equipment 1000 and the display device 1 is significantly improved.

[0046] Reference Figure 2In some embodiments, the illumination light transmission module 100 may further include a pattern layer 103. The pattern layer 103 is located between the light guide layer 101 and the illumination light reflection layer 300. The pattern layer 103 may include, for example, multiple microprism structures, but is not limited thereto. The illumination light IL emitted by the illumination light emitter 200 undergoes diffuse reflection after incident on the pattern layer 103. Through the aforementioned diffuse reflection, the travel path of the illumination light IL can be changed, increasing the amount of light penetrating the light guide layer 101 and improving the accuracy of infrared sensing.

[0047] However, the present invention is not limited thereto. In some embodiments, the normal to the surface of the illumination light reflective layer 300 may not be parallel to the Z direction, but rather inclined relative to the Z direction toward the corresponding illumination light emitter 200. In other words, the normal to the surface of the illumination light reflective layer 300 may not be perpendicular to the X and Y directions. This reduces the incident angle and reflection angle of the illumination light IL on the surface, thereby increasing the amount of light penetrating the light guide layer 101 and improving the accuracy of infrared sensing. In the above configuration, the illumination light penetration module 100 may not include the pattern layer 103.

[0048] The illumination light transmission module 100 may further include an optical layer 102, which is located between the light guide layer 101 and the illumination light reflection layer 300. The optical layer 102 has a transmittance of more than 90% for the illumination light IL from the illumination light emitter 200. Therefore, most of the illumination light IL can be reflected back by the illumination light reflection layer 300 after passing through the optical layer 102, and then pass through the optical layer 102 and the light guide layer 101 to enter the air. In some embodiments, the optical layer 102 may be, for example, an infrared-permeable ink, but is not limited thereto.

[0049] In a preferred embodiment, the optical layer 102 has a transmittance of less than 2% for visible light. Furthermore, the optical layer 102 and the black ink layer 30 of the display device 1 can be manufactured using the same process, thus ensuring that the optical layer 102 and the black ink layer 30 are co-located in the Z-direction. With this design, when a user views the display device 1 from the outside, a consistent color performance can be observed in the peripheral area PR.

[0050] To fully illustrate the various embodiments of the present invention, other embodiments will be described below. It must be noted that the following embodiments use the same element reference numerals and some content as those in the foregoing embodiments, with the same reference numerals representing the same or similar elements, and descriptions of identical technical content omitted. For explanations of the omitted parts, please refer to the foregoing embodiments; these will not be repeated in the following embodiments.

[0051] Simultaneously refer to Figure 1 as well as Figure 3 ,in Figure 3 Show Figure 1 A cross-sectional schematic diagram of the display device in a second embodiment of the present invention.

[0052] In a second embodiment of the present invention, the display device 1 has a display area AR and a peripheral area PR surrounding the display area AR, and the display device 1 includes a display panel 20, a substrate SB, a plurality of illumination light emitters 200, an illumination light transmission module 100, and an illumination light reflection layer 300A.

[0053] The display panel 20 includes a light-emitting surface 20E and can be, for example, a light-emitting diode display panel, an organic light-emitting diode display panel, a liquid crystal display panel with a backlight module, and the like. Therefore, the display panel 20 can emit display information IM from its light-emitting surface 20E.

[0054] The substrate SB can be, for example, the cover glass of the display device 1, and is located on the light-emitting surface 20E of the display panel 20. Accordingly, the display information IM provided by the display panel 20 can be emitted from the substrate SB into the display device 1. Figure 3 As shown.

[0055] The illumination light transmission module 100 may include at least a light guide layer 101. After penetrating the light guide layer 101, the illumination light IL can penetrate the substrate SB. The light guide layer 101 is disposed on a plane defined by the X and Y directions, and the illumination light IL can enter the light guide layer 101 from at least one side, such as... Figure 3 As shown. In some embodiments, the light guide layer 101 may include polycarbonate (PC), acrylic (PMMA), and the like.

[0056] The illumination light reflector layer 300A is disposed within the peripheral area PR and is disposed on the light guide layer 101 along the -Z direction.

[0057] like Figure 3 As shown, the illumination light IL emitted by the illumination light emitter 200 enters the light guide layer 101 from one side. At least a portion of the illumination light IL can be reflected by the illumination light reflective layer 300A, thereby penetrating the light guide layer 101 and the substrate SB, and then entering the air (i.e., the illumination light IL is emitted from the substrate SB and exits the display device 1). In a preferred embodiment, the illumination light reflective layer 300A may have a reflectivity greater than 90% for the illumination light IL from the illumination light emitter 200, but is not limited thereto.

[0058] Reference Figure 3In some embodiments, the illumination light transmission module 100 may further include a pattern layer 103. The pattern layer 103 is located between the light guide layer 101 and the illumination light reflection layer 300A. The illumination light IL emitted by the illumination light emitter 200 undergoes diffuse reflection after incident on the pattern layer 103. Through the aforementioned diffuse reflection, the travel path of the illumination light IL can be changed, increasing the amount of light penetrating the light guide layer 101 and the substrate SB, thereby improving the accuracy of infrared sensing.

[0059] The illumination light transmission module 100 may further include an optical layer 102, wherein the light guide layer 101 is located between the optical layer 102 and the illumination light reflection layer 300A. The optical layer 102 has a transmittance of more than 90% for the illumination light IL from the illumination light emitter 200, so most of the illumination light IL that passes through the light guide layer 101 can pass through the optical layer 102 and continue to pass through the substrate SB and enter the air.

[0060] In a preferred embodiment, the optical layer 102 has a transmittance of less than 2% for visible light. Furthermore, the optical layer 102 and the black ink layer 30 of the display device 1 can be manufactured using the same process, thus making the optical layer 102 and the black ink layer 30 co-located in the Z direction. With this design, when a user views the display device 1 from the outside, a black with relatively uniform brightness can be seen in the peripheral area PR.

[0061] In this second embodiment, the display device 1 may further include an illumination light reflective layer 300B, wherein the illumination light reflective layer 300B is located between the light guide layer 101 and the display panel 20. This increases the amount of light penetrating the light guide layer 101 and the substrate SB, thereby improving the accuracy of infrared sensing.

[0062] Reference Figure 4A as well as Figure 4B ,in Figure 4A A schematic diagram of a display device according to a third embodiment of the present invention is shown. Figure 4B Show along Figure 4A A schematic diagram of the cross-section of line AA'. It should be understood that... Figure 1 The display device 1 in the present third embodiment can be replaced by the display device 2.

[0063] like Figure 4A as well as Figure 4BAs shown, the display device 2 includes at least four optical layers 102 disposed at different locations within the peripheral region PR. It should be noted that these four different optical layers 102 correspond to different illumination light emitters, light guide layers, and illumination light reflective layers, respectively. The configuration between the optical layers 102 and their corresponding illumination light emitters, light guide layers, and illumination light reflective layers can be the same as or similar to the configuration between the optical layers 102, illumination light emitter 200, light guide layer 101, and illumination light reflective layer 300 in the first embodiment described above, and will not be elaborated here.

[0064] like Figure 4A As shown, multiple optical layers 102 are disposed at the openings of the black ink layer 30, so that when a user views the display device 2 from the outside, a consistent color performance can be seen in the peripheral area PR. It is understood that in this third embodiment, multiple illumination light emitters 200 emit illumination light (infrared light) IL toward multiple sides of the substrate SB of the display device 2. Accordingly, the accuracy of infrared sensing can be improved.

[0065] Reference Figure 5 This illustrates a schematic diagram of a display device according to a fourth embodiment of the present invention. It should be understood that... Figure 1 The display device 1 in this fourth embodiment can be replaced by the display device 3.

[0066] In this fourth embodiment, the display device 3 includes a plurality of illumination light emitters 200, and the distances between these illumination light emitters 200 and their corresponding optical layers 102 are different. It should be noted that the configuration between the optical layer 102 and its corresponding light guide layer and illumination light reflector layer can be the same as or similar to the configuration between the optical layer 102, light guide layer 101, and illumination light reflector layer 300 in the first embodiment described above. Alternatively, the configuration between the optical layer 102 and its corresponding light guide layer and illumination light reflector layer can be the same as or similar to the configuration between the optical layer 102, light guide layer 101, and illumination light reflector layers 300A, 300B in the second embodiment described above, which will not be elaborated here. Therefore, it can be understood that in this fourth embodiment, the distances between the plurality of illumination light emitters 200 and the sides of their corresponding light guide layers are different. Accordingly, the divergence of the illumination light IL (infrared light) after entering the air can be increased, thereby improving the range of infrared sensing.

[0067] In summary, in the display device and automotive equipment provided according to embodiments of the present invention, the illumination light emitter can be configured separately from the optical sensor, and the illumination light emitter can utilize the existing peripheral area of ​​the display device for light guiding. The illumination light emitter and the optical sensor can be used for infrared sensing. Furthermore, the display device and automotive equipment exhibit excellent visual performance.

[0068] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A display device comprising a display area and a peripheral area surrounding the display area, characterized in that, The display device includes: A display panel includes a light-emitting surface, wherein the display panel is adapted to emit display information from the light-emitting surface; A substrate is located on the light-emitting surface of the display panel; At least one illumination emitter for emitting an illumination light; An illumination light transmission module includes a light guide layer disposed on a plane defined by a first direction and a second direction, and the illumination light is adapted to enter the light guide layer from at least one side; and A first illumination light reflector layer is disposed on the light guide layer along a stacking direction and within the peripheral area, wherein the illumination light, after being reflected by the first illumination light reflector layer, penetrates the light guide layer. The display information and the illumination light are both emitted from the substrate of the display device.

2. The display device as claimed in claim 1, characterized in that, The light guide layer is a part of the substrate.

3. The display device as claimed in claim 2, characterized in that, The at least one illumination light emitter includes a plurality of illumination light emitters, the substrate has a plurality of said sides, and the plurality of illumination light emitters respectively emit illumination light toward the plurality of said sides of the substrate.

4. The display device as claimed in claim 1, characterized in that, The illumination light transmission module further includes an optical layer located between the light guide layer and the first illumination light reflection layer, and the optical layer has a transmittance of more than 90% for the illumination light.

5. The display device as claimed in claim 4, characterized in that, The optical layer is disposed in the same layer as a black ink layer of the display device in the stacking direction.

6. The display device as claimed in claim 1, characterized in that, The illumination light penetrates the substrate after passing through the light guide layer.

7. The display device as claimed in claim 1, characterized in that, The illumination light transmission module further includes an optical layer, the light guide layer is located between the optical layer and the first illumination light reflection layer, and the optical layer has a transmittance of more than 90% for the illumination light.

8. The display device as claimed in claim 7, characterized in that, The optical layer is disposed in the same layer as a black ink layer of the display device in the stacking direction.

9. The display device as claimed in claim 4 or 7, characterized in that, The optical layer has a transmittance of less than 2% for visible light.

10. The display device as claimed in claim 1, characterized in that, It also includes a second illumination light reflector layer, wherein the second illumination light reflector layer is located between the light guide layer and the display panel.

11. The display device as claimed in claim 1, characterized in that, The illumination light transmission module further includes a pattern layer located between the light guide layer and the first illumination light reflection layer.

12. The display device as claimed in claim 1, characterized in that, The first illumination light reflective layer has a reflectivity of more than 90% for the illumination light.

13. The display device as claimed in claim 1, characterized in that, The at least one illumination light emitter includes a plurality of illumination light emitters, and the plurality of illumination light emitters are at different distances from the at least one side of the light guide layer.

14. The display device as claimed in claim 1, characterized in that, The at least one illumination light emitter is disposed on one side of the display device, and the side of the display device is used to bond a circuit board.

15. The display device as claimed in claim 1, characterized in that, The normal to one surface of the first illumination reflective layer is not perpendicular to the first direction or the second direction.

16. A vehicle-mounted device, characterized in that, include: The display device as described in claim 1; as well as An optical sensor for sensing the illumination light.

17. The vehicle equipment as described in claim 16, characterized in that, The optical sensor is disposed within the display area of ​​the display device.

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