WO2022094781A1 - Display device and vehicle - Google Patents

Abstract

A display device and a vehicle. The display device comprises a segment code screen (10), a light control sheet (40), a color film (70), a light guide cover (20), and a circuit board (30). The light control sheet (40) comprises a front protective layer (41), a rear protective layer (42), and a light control layer (43); the light control layer (43) is provided between the front protective layer (41) and the rear protective layer (42), the front protective layer (41) is attached to the rear side face of the segment code screen (10), and the rear protective layer (42) is attached to the front face of the color film (70); the light control layer (43) comprises light-transmitting structures (431) and non-light-transmitting structures (432) which are arranged in a staggered manner in the vertical direction. By providing the light control sheet (40), a pattern which interferes with the sight of a driver due to the fact that light hits the front windshield (200) can be avoided, and driving safety is guaranteed.

Description

Display devices and automobiles technical field

The present application relates to the field of display technology, in particular to a display device and an automobile.

Background technique

In order to save costs, some display devices use a combination of a segment code screen and a color liquid crystal display. However, in practical applications, the display device formed by the combination of the segment code screen and the color liquid crystal display sometimes forms patterns in unnecessary positions, which affects the line of sight. Some patterns are formed on the device, and these patterns will interfere with the normal sight of the driver and affect the driving safety of the driver, thereby limiting the application range of the display device of this structure.

Application content

Based on the above situation, the main purpose of the present application is to provide a display device and an automobile, so as to solve the technical problem in the prior art that patterns are formed at unnecessary positions and the sight line is affected.

To achieve the above object, on the one hand, the technical scheme adopted in the application is as follows:

A display device includes a segment code screen, a light control sheet, a color film, a light guide cover and a circuit board, wherein the light control sheet includes a front protective layer, a rear protective layer, and a The light control layer between the rear protective layers, the front protective layer is attached to the rear side of the segment screen, the rear protection layer is attached to the front of the color film, and the light control layer includes The light-transmitting structure and the non-light-transmitting structure are arranged alternately in the vertical direction.

Preferably, a polarizing layer is provided between the rear protective layer of the light control sheet and the light control layer.

Preferably, the segment code screen includes an upper polarizer, an upper glass substrate, an upper ITO coating, a liquid crystal, a lower ITO coating, a lower glass substrate and a lower polarizer from front to back, and the lower polarizer constitutes the control panel. The front protective layer of the light sheet.

Preferably, the connection line between the top front end and the bottom rear end of the light-transmitting structure in the longitudinal section is denoted as L1, and the connection line between the top rear end and the bottom front end of the light-transmitting structure in the longitudinal section is denoted as L2, L1 The included angle α with L2 is greater than or equal to 50 degrees and less than or equal to 70 degrees.

Preferably, the front protective layer and the rear protective layer are both polycarbonate layers, the non-light-transmitting structure is a colloid doped with a non-transparent material, and the light-transmitting structure is an optical fiber.

Preferably, the segment code screen is fully attached and connected to the light control sheet through a first adhesive layer;

The light control sheet is fully bonded and connected to the color film through the second adhesive layer.

Preferably, the display device further includes a color liquid crystal display screen, the front side of the color liquid crystal display screen and the rear side surface of the color film are arranged to fit together, and the backlight source of the color liquid crystal display screen is the first backlight source, so The backlight source of the segment code screen is a second backlight source, the second backlight source is arranged on the circuit board, and the display device further comprises a front cover plate and a polarizer arranged on the rear side of the front cover plate, The front cover plate includes a glass plate and an ink layer arranged on the rear side of the glass plate, the glass plate includes a first area corresponding to the display area of the segment code screen, and a display area of the color liquid crystal display screen. The second area corresponding to the area, and the third area except the first area and the second area, the ink layer is only provided in the third area, and the angle of the polarizer is 15° to 30°, the L value in the Lab color model of the ink layer is 30 to 40, the brightness of the first backlight source is 22000cd/m ² to 24000cd/m ² , and the brightness of the second backlight source is 700cd/m m ² to 1100cd/m ² .

Preferably, a mounting structure is provided on the display device, and the mounting structure is configured to enable the display device to be rotatably mounted on the vehicle.

Preferably, the display device is a car dashboard or an air conditioner controller.

On the other hand, the technical solution adopted in this application is as follows:

An automobile includes the display device as described above.

The display device provided by the present application is provided with a light control sheet between the segment screen and the color film, and the light control sheet includes a front protective layer, a rear protective layer, and a light control layer disposed between the front protective layer and the rear protective layer. The light control layer includes a plurality of light-transmitting structures arranged at vertical intervals and non-light-transmitting structures arranged between adjacent light-transmitting structures. In this way, by setting the light control sheet, the light can be prevented from hitting undesired positions, such as reaching the front windshield of the car to form a pattern that interferes with the driver's sight, ensuring driving safety.

Other beneficial effects of the present application will be described in the specific embodiments through the introduction of specific technical features and technical solutions. Those skilled in the art should be able to understand the technical features and technical solutions through the introduction of these technical features and technical solutions. beneficial technical effects.

Description of drawings

Preferred embodiments according to the present application will be described below with reference to the accompanying drawings. In the picture:

Fig. 1 is the exploded view of the automobile instrument panel provided by the specific embodiment of this application;

2 is a cross-sectional view of a light control sheet and a color film provided in Embodiment 1 of the present application;

3 is a cross-sectional view of a light control sheet and a color film provided in Embodiment 2 of the present application;

4 is a cross-sectional view of a light control sheet and a color film provided in Embodiment 3 of the present application;

5 is a schematic structural diagram of a light control layer provided by a specific embodiment of the present application;

FIG. 6 is a schematic diagram of a vehicle dashboard provided in a specific embodiment of the present application in a conventional mode;

FIG. 7 is a schematic diagram of an automobile instrument panel in a head-up display mode according to a specific embodiment of the present application.

In the picture:

100, car dashboard; 10, segment code screen; 20, light guide cover; 21, light guide hole; 30, circuit board; 40, light control sheet; 41, front protective layer; 42, rear protective layer; 43, control light layer; 431, light transmission structure; 432, non-light transmission structure; 44, UV color pattern layer; 45, base layer; 46, polarizing layer; 50, color LCD screen; 60, front cover plate; 70, color film ;

200. Front windshield.

Detailed ways

The present application is described below based on examples, but the present application is not limited to these examples only. In the following detailed description of the present application, some specific details are described in detail. In order to avoid obscuring the essence of the present application, well-known methods, procedures, procedures and elements are not described in detail.

Furthermore, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless clearly required by the context, words such as "including", "comprising" and the like throughout the specification and claims should be construed in an inclusive rather than an exclusive or exhaustive sense; that is, "including but not limited to" meaning.

In the description of the present application, it should be understood that the terms "first", "second" and the like are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. Also, in the description of this application, unless otherwise specified, "plurality" means two or more.

In this application, "top" and "bottom" refer to the orientation of the display device during normal use, and "front" and "rear" refer to the user who faces the light-emitting surface of the display device, and the side close to the user is "Front", the side away from the user is "Back".

The present application proposes a display device, which can be used in any occasion where it is necessary to control the light emitting angle range, such as a device with a display function in an automobile, specifically an automobile instrument panel 100, an air conditioner controller, a central control screen, etc. The structure of the display device is mainly described below by taking the car dashboard 100 as an example. As shown in FIG. 1 , the car dashboard 100 includes a segment code screen 10 , a color film 70 , a light guide cover 20 and a circuit board 30 . The circuit board 30 is provided with The backlight source (not shown in the figure) of the segment code screen 10 is denoted as the second backlight source, and the second backlight source is, for example, an LED lamp arranged on the circuit board 30 . The light guide cover 20 is provided with light guide holes 21 corresponding to the LED lights. The light emitted by the LED lights enters the segment code screen 10 through the light guide holes 21 and the color film 70 , thereby realizing the color display function of the segment code screen 10 .

Aiming at the problem that the existing car dashboard with segment code screen sometimes forms some patterns on the front windshield, the applicant found that when the car dashboard is installed at certain angles, especially in the vertical car dashboard or These patterns are formed on the front windshield only when the hood is short, and these patterns are formed because the outgoing light of the segment code screen is projected onto the windshield. Based on this, the automobile instrument panel 100 provided by the present application also It includes a light control sheet 40 arranged between the segment screen 10 and the color film 70. As shown in FIG. 3, the light control sheet 40 includes a front protective layer 41, a rear protective layer 42 and a light control layer 43. The light layer 43 is disposed between the front protective layer 41 and the rear protective layer 42, the color film 70 includes a base layer 45 and a UV color pattern layer 44, the UV color pattern layer 44 is disposed on the base layer, and the UV color pattern layer 44 can be disposed on The front side of the base layer 45 is also disposed on the rear side of the base layer 45 , and the color film 70 is attached to the rear protective layer 42 . In order to avoid light leakage and improve production efficiency, preferably, the segment code screen 10 is fully attached and connected to the light control sheet 40 through the first adhesive layer; the light control sheet 40 is fully attached and connected to the color film 70 through the second adhesive layer.

As shown in FIG. 5 , the light control layer 43 includes light-transmitting structures 431 and non-light-transmitting structures 432 arranged alternately in the vertical direction, that is, including light-transmitting structures 431 and non-light-transmitting structures 432 , and the light-transmitting structures 431 are arranged at intervals in the vertical direction. , the non-light-transmitting structure 432 is arranged between the adjacent light-transmitting structures 431, and the light-emitting angle range of the segment code screen can be controlled by setting the light-transmitting structure and the non-light-transmitting structure at intervals, that is, by setting such a structure, the segment code can be The light-emitting angle of the screen is controlled within a certain range, so as to prevent the light from reaching undesired positions. Preferably, the connection line between the top front end and the bottom rear end of the light-transmitting structure 431 in the longitudinal section is denoted as L1, and the connection line between the top rear end and the bottom front end of the light-transmitting structure 431 in the longitudinal section is denoted as L2, L1 The included angle α with L2 is greater than or equal to 50 degrees and less than or equal to 70 degrees. It is understood that L1 and L2 refer to straight lines in the same longitudinal section. In this way, referring to FIG. 6 , by setting the dimensions of the non-transmissive structure 432 and the translucent structure 431 of the light control layer 43 , the light exit angle is within the range of 50 degrees to 70 degrees, that is, only light within this angle range can be It is emitted from the light-emitting surface of the car dashboard 100 for the driver to view the information displayed on the car dashboard 100 , while the light from other angles will be blocked by the non-transparent structure 432 , thereby effectively preventing the light from being projected onto the front windshield 200 and passing through. The front windshield 200 is reflected into the driver's eyes, so as to avoid interference with the driver's line of sight. In this way, the provision of the light control sheet 40 can not only realize the color display of the segment code screen 10, improve the display effect, but also prevent the light from hitting the front windshield 200 to form patterns that interfere with the driver's sight, thereby ensuring driving safety.

Preferably, as shown in FIG. 2, the rear protective layer 42 of the light control sheet 40 constitutes the base layer 45 of the color film 70, that is, the UV color pattern layer 44 is formed on the rear side of the rear protective layer 42 by UV printing. The desired pattern can be obtained, the cost is low and the production cycle is short, and the UV printing can realize a multi-color gradient effect, which makes the display effect of the segment code screen 10 more brilliant. In addition, this arrangement makes the structure simple, does not affect the overall thickness of the automobile instrument panel 100, and is easy to disassemble and assemble, which is convenient for assembly and later maintenance.

The light-transmitting structures 431 may be arranged at equal intervals in the vertical direction as shown in FIG. 5 , or may be arranged at unequal intervals. For example, the light-transmitting structures 431 are arranged such that the distance between the light-transmitting structures 431 gradually decreases from the lower part to the upper part. Small, that is to say, the lower light-emitting angle range is relatively large, while the upper light-emitting angle range is relatively small. It is small to ensure that the outgoing light will not be projected on the front windshield 200 .

The light-transmitting structure 431 can also be a whole structure in the lateral direction, and the corresponding non-light-transmitting structure 432 can also be set as a whole structure in the lateral direction. This arrangement usually requires an embossing process, which will cause the thickness of the light control sheet 40 to be relatively high. Thick, the manufacturing precision is difficult to control. In order to solve this problem, preferably, there are multiple light-transmitting structures 431 arranged at intervals in the lateral direction. During preparation, the light-transmitting structures 431 are first arranged in a good position, and then non-light-transmitting materials are filled between the light-transmitting structures 431. Within the space, the preparation of the light control layer 43 can be completed, so that the thickness can be very thin and the precision can be controlled. The vertical positions of the light-transmitting structures 431 in different rows can be in one-to-one correspondence, or they can be staggered. The staggered arrangement can reduce the distance between the light-transmitting structures 431, thereby improving the transmittance of light.

The non-light-transmitting structure 432 and the light-transmitting structure 431 can be selected from any materials that can realize the above-mentioned functions. The non-transparent structure 432 is a colloid doped with a non-transparent material, such as carbon black, and the translucent structure 431 is an optical fiber. The light-controlling sheet 40 only needs to select the optical fiber of the required diameter and cut it into Appropriate length, arrange each section of optical fiber according to the required interval, and then fill the non-transparent material between adjacent optical fibers, the preparation of the light control layer 43 can be completed (the details will be introduced later). This method can The dimensional accuracy of each structure is accurately ensured, and a thinner light control layer 43 is obtained by increasing the diameter of the optical fiber and reducing the length of the optical fiber. The optical fiber is used as the light-transmitting structure 431. Since the loss of light during transmission in the optical fiber is small, Thereby effectively improving the light transmittance.

The preparation method of the light control sheet 40 includes the following steps:

S10. Select an optical fiber with a specific diameter and a specific length according to requirements, and arrange the optical fiber according to the arrangement requirements of the aforementioned light-transmitting structure 431;

S20, filling the non-light-transmitting material into the space between each optical fiber, thereby forming the light-controlling layer 43;

S30, disposing the front protective layer 41 on one side of the light control layer 43;

S40 , the rear protective layer 42 is provided on the other side of the control layer 43 .

The front protective layer 41 and the rear protective layer 42 can be made of materials with good light transmittance and good flexibility. Preferably, the front protective layer 41 and the rear protective layer 42 are both polycarbonate layers. Of course, the front protective layer 41 and the rear protective layer 42 can also be made of other materials, such as resin materials.

Further, the segment code screen 10 usually includes an upper polarizer, an upper glass substrate, an upper ITO coating, a liquid crystal, a lower ITO coating, a lower glass substrate and a lower polarizer arranged from front to back. In another embodiment, To further simplify the structure, the lower polarizer constitutes the front protective layer 41 of the light control sheet 40 , that is, the light control layer 43 is disposed between the lower polarizer and the rear protective layer 42 . In this way, the segment code screen 10 and the light control sheet 40 can be processed into an integral structure, which not only saves the cost, but also reduces the thickness of the entire automobile instrument panel 100, making the structure of the automobile instrument panel 100 more compact. In addition, due to the segment code screen 10 and the light control sheet 40 are formed into an integral structure, which is more convenient to assemble and further improves the assembling efficiency.

Among them, the light control layer 43 of the light control sheet 40 can be directly attached to the rear protective layer 42. Due to the blocking by the non-light-transmitting structure 432, some light loss will inevitably be caused. As shown in FIG. 4 , a polarizing layer 46 is arranged between the rear protective layer 42 and the light controlling layer 43 of the light control sheet 40 . By setting the polarizing layer 46 , more light is emitted through the light transmission structure 431 , thereby increasing the segment length. Display brightness of the code screen 10. Further, one or more layers of brightness enhancement layers may be arranged between the rear protective layer 42 and the light control layer 43 , so as to further improve the display brightness of the segment code screen 10 .

Further, the automobile instrument panel 100 further includes a color liquid crystal display screen 50, and the front side of the color liquid crystal display screen 50 is arranged in a fit with the rear side of the color film 70. Since the color liquid crystal display screen 50 itself has a color display function, there is no need to set a color film, Therefore, the control of the light-emitting angle range of the color liquid crystal display screen 50 can be realized by only disposing the light control sheet 40 in the color liquid crystal display screen 50 .

The automobile instrument panel 100 further includes a front cover plate 60 and a polarizer (not shown in the figure). The polarizer is disposed on the rear side of the front cover plate 60. The front cover plate 60 includes a glass plate and an ink layer. The ink layer is disposed on the The rear side of the glass plate, the glass plate includes a first area, a second area and a third area except the first area and the second area, the first area and the segment code screen 10 The second area corresponds to the display area of the color liquid crystal display screen 50 . The ink layer is only provided in the third area, and by providing the polarizer, the boundary between the display area and the non-display area of the automobile instrument panel 100 can be weakened, and the black effect of the entire display screen of the automobile instrument panel 100 can be improved. At this time, the light transmittance of the glass forming the front cover 60 can be set higher to ensure the display effect of the automobile instrument panel 100 . In view of the problem in the prior art that the car dashboard 100 can see the boundary line between the display area and the non-display area when the screen is off, the applicant of the present application found that the L value of the black ink layer is matched by defining the angle of the polarizer. , which can make it difficult for the naked eye to distinguish the dividing line between the two regions of the car dashboard 100. Specifically, the angle of the polarizer is 15° to 30°, and the L value in the Lab color model of the ink layer is 30 to 40 , Through the cooperation of the black ink layer and the polarizer, it can not only ensure the clear display in the use state, but also realize the true one-piece black effect, and improve the user's perception when the screen is off; in addition, the setting of the polarizer can also filter Part of the stray light is removed to further improve the display effect and improve security. Since the light transmittance of the segment code screen 10 is higher than that of the color liquid crystal display screen 50, and the light from the backlight of the color liquid crystal display screen 50 needs to pass through both the color liquid crystal display screen 50 and the segment code screen 10, Therefore, the brightness of the second backlight source is set to be lower than the brightness of the backlight source of the color liquid crystal display screen 50. In this way, a more consistent display effect can be achieved through the combination of the two brightnesses. In a preferred embodiment, the color liquid crystal display screen 50 The backlight source is denoted as the first backlight source, the brightness of the first backlight source is 22000cd/m ² to 24000cd/m ² , and the brightness of the second backlight source is 700cd/m ² to 1100cd/m ² . Due to the arrangement of the above-mentioned ink layer and polarizer, good display effect can be ensured even if the above-mentioned brightness backlight source is used, and the cost of the above-mentioned brightness backlight source is relatively low, which reduces the cost of this type of automobile instrument panel 100 to a certain extent. Through the comprehensive limitation of the L value of the black ink layer, the angle of the polarizer and the brightness of the backlight, the clarity of the display in the use state is better guaranteed, which is convenient for the driver to observe and improves the safety. It is better to ensure that when the car dashboard 100 is in an off-screen state, a one-piece black effect is presented, and the grade of the car dashboard 100 is improved.

The existing automobile instrument panel is usually embedded in the interior of the automobile instrument panel, resulting in a complicated structure of the panel of the instrument panel, and the position where the automobile instrument panel is arranged is high arched, which restricts the driver's field of vision. In addition, because the dashboard of the car is embedded in the front side of the steering wheel, it is not conducive to the disassembly and maintenance in the later stage. In response to this problem, in a preferred embodiment of the present application, the car dashboard 100 is set as a vertical car dashboard, that is, the car dashboard 100 is only provided with a mounting structure at the lower part, and the mounting structure is used to connect with the car dashboard. The structure of the vehicle is matched, so that the automobile instrument panel 100 is erected on the instrument panel. Compared with the embedded instrument panel, the vertical automobile instrument panel 100 is more convenient to install and disassemble, and the structure of the automobile instrument panel 100 is simpler to avoid occupying more space. In addition, the vertical automobile instrument panel 100 is also more compact. It is convenient for the driver to observe, reduces the driver's fatigue, and improves the driving safety. The dashboard 100 of the car is set to be vertical. In order to facilitate the driver's viewing, the front cover 60 is inclined from top to bottom toward the driver's side. In this case, the light emitted by the segment code screen 10 is easier to project to the front. Therefore, the problem of interfering with the driver's line of sight in the vertical automobile instrument panel 100 is particularly obvious, and the automobile instrument panel 100 with the light control sheet 40 provided in the present application is very suitable for this vertical automobile instrument panel 100 The structure can effectively solve the problem that the light projected to the front windshield 200 interferes with the driver's line of sight.

Existing cars need to install a projector on the car to realize the function of head-up display, which increases the cost of the car on the one hand, and on the other hand, the projector generates a large amount of heat, which is easily damaged and affects the comfort of the car environment. . In a preferred embodiment, the installation structure is configured so that the automobile instrument panel 100 can be rotatably disposed on the automobile instrument panel, and the automobile instrument panel 100 further includes a driving device for driving the automobile instrument panel 100 to rotate, so as to change the automobile instrument panel The angle between the light-emitting surface of the car 100 and the front windshield 200 of the car, in this way, the head-up display function can be realized by the rotation of the car dashboard 100 . Specifically, the head-up display function can be realized by using the specific angle of light output of the light control sheet 40 to cooperate with the driving device to drive the dashboard of the automobile to rotate by a specific angle. As shown in FIG. 6 , in the normal mode, the light emitted from the instrument panel 100 of the automobile will not be projected onto the front windshield 200 under the action of the light control sheet 40, and within the visual range of the driver, when the instrument panel of the automobile When the panel 100 receives the control command to switch to the head-up display mode, the circuit board 30 of the car dashboard 100 controls the driving device to rotate the car dashboard 100 by a preset angle, as shown in FIG. It does not directly enter the driver's visual range, but is projected onto the front windshield 200, and is reflected to the driver's visual range through the front windshield 200. In this way, the content displayed on the dashboard 100 of the car is projected to the front of the car. On the windshield 200, the head-up display function is achieved. Since the displayed content is projected on the front windshield 200, the direction of the displayed content needs to be changed, so that the driver can see the content in the correct direction. For the color liquid crystal display screen 50, it is only necessary to control the direction of the displayed content to be reversed. That’s enough, but for the segment code screen 10, the displayed content is fixed. To change the direction of the displayed content, the shape of the liquid crystal in the segment code screen 10 needs to be set, and the light guide cover 20 also needs to be adjusted accordingly. Setting, specifically, the liquid crystal of the segment code screen 10 includes a common liquid crystal group, a conventional mode liquid crystal group and a head-up display mode liquid crystal group, and the liquid crystal pattern in the common liquid crystal group is a liquid crystal pattern that can be used in both the conventional mode and the head-up display mode, For example, vehicle speed display pattern, rotational speed display pattern, left steering, right steering and other liquid crystal patterns that do not affect the display in both positive and negative directions, such as tire pressure, seat belt, oil warning, etc. The mode liquid crystal pattern and the head-up display mode liquid crystal pattern, the shapes of the two can be the same or different, and the directions differ by 180 degrees. In the normal mode, the circuit board 30 of the car dashboard 100 controls the liquid crystal pattern in the common liquid crystal group and the normal mode liquid crystal. The backlight source corresponding to the liquid crystal pattern in the group is turned on and off, so as to realize the display of the content of the automobile instrument panel 100 in the normal mode. In the head-up display mode, the circuit board 30 of the vehicle instrument panel 100 controls the backlight source corresponding to the liquid crystal pattern in the common liquid crystal group and the liquid crystal pattern in the head-up display mode liquid crystal group to turn on and off, so as to realize the car instrument in the head-up display mode. The contents of the disc 100 are displayed.

Further, the present invention also provides an automobile, including the above-mentioned display device, which can effectively solve the problem that the driver's sight is disturbed.

Those skilled in the art can understand that, under the premise of no conflict, the above preferred solutions can be freely combined and superimposed.

It should be understood that the above-mentioned embodiments are only exemplary rather than restrictive, and those skilled in the art can make various obvious or equivalent to the above-mentioned details without departing from the basic principles of the present application. Modifications or substitutions will all be included within the scope of the claims of the present application.

Claims (10)

A display device, characterized in that it comprises a segment code screen (10), a light control sheet (40), a color film (70), a light guide cover (20) and a circuit board (30), wherein the light control sheet (40) comprising a front protective layer (41), a rear protective layer (42) and a light control layer (43), the light control layer (43) being disposed on the front protective layer (41) and the rear protective layer ( 42), the front protective layer (41) and the rear side of the segment screen (10) are fitted and arranged, and the rear protective layer (42) is fitted and arranged with the front side of the color film (70). , the light control layer (43) includes a light-transmitting structure (431) and a non-light-transmitting structure (432) arranged alternately in the vertical direction. The display device according to claim 1, wherein a polarizing layer (46) is provided between the rear protective layer (42) of the light control sheet (40) and the light control layer (43). The display device according to claim 1, wherein the segment code screen (10) includes an upper polarizer, an upper glass substrate, an upper ITO coating, a liquid crystal, a lower ITO coating, and a lower glass substrate from front to back. and a lower polarizer, the lower polarizer constitutes the front protective layer (41) of the light control sheet (40). The display device according to claim 1, characterized in that, the connection line between the top front end and the bottom rear end of the light-transmitting structure (431) in the longitudinal section is denoted as L1, and the light-transmitting structure (431) is in the vertical section. The line connecting the top rear end and the bottom front end in the cutting plane is denoted as L2, and the included angle α between L1 and L2 is greater than or equal to 50 degrees and less than or equal to 70 degrees. The display device according to claim 1, wherein the front protective layer (41) and the rear protective layer (42) are both polycarbonate layers, and the non-transparent structure (432) is doped A colloid of non-transparent material, the light-transmitting structure (431) is an optical fiber. The display device according to claim 1, wherein the segment code screen (10) is fully attached and connected to the light control sheet (40) through a first adhesive layer; The light control sheet (40) is fully attached and connected to the color film (70) through a second adhesive layer. The display device according to any one of claims 1 to 6, characterized in that, the display device further comprises a color liquid crystal display screen (50), and the front surface of the color liquid crystal display screen (50) is connected to the color film (50). 70), the back side of the color liquid crystal display screen (50) is a first backlight source, the backlight source of the segment code screen (10) is a second backlight source, and the second backlight source is arranged on the circuit board (30), the display device further comprises a front cover plate (60) and a polarizer, the polarizer is arranged on the rear side of the front cover plate (60), the front cover plate (60) comprising a glass plate and an ink layer, the ink layer is disposed on the rear side of the glass plate, the glass plate includes a first area, a second area, and the area other than the first area and the second area The third area outside, the first area corresponds to the display area of the segment code screen (10), the second area corresponds to the display area of the color liquid crystal display (50), and the ink layer only It is arranged in the third area, the angle of the polarizer is 15° to 30°, the L value in the Lab color model of the ink layer is 30 to 40, and the brightness of the first backlight source is 22000cd/m ² to 24000cd/m ² , and the brightness of the second backlight source is 700cd/m ² to 1100cd/m ² . The display device according to claim 1, wherein a mounting structure is provided on the display device, and the mounting structure is configured to enable the display device to be rotatably mounted on a vehicle. The display device according to any one of claims 1 to 8, wherein the display device is a car dashboard or an air conditioner controller. An automobile is characterized by comprising the display device according to any one of claims 1 to 9.

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