A curved luminous screen for vehicle instrument panel

Abstract

This utility model proposes a curved luminous screen for vehicle instrument panels, including an instrument body, which comprises an instrument shell, a mounting plate, and an OLED self-emissive screen. The mounting plate has a mounting cavity, and a control component is disposed between the mounting plate and the instrument shell. A glass cover is disposed on the mounting plate. The OLED self-emissive screen includes a liquid crystal display module, which comprises a polarizing film, a glass encapsulation layer, a low-temperature polycrystalline silicon layer, and a graphite sheet layer arranged sequentially. The use of an OLED self-emissive screen in the vehicle instrument panel only requires power to the illuminated pixels, resulting in 40%-50% lower power consumption than LCD. This is particularly suitable for extending the range of new energy vehicles. Furthermore, the self-emissive nature of OLED pixels allows for a contrast ratio of up to one million to one, with near-pure black, reducing light pollution, especially during nighttime driving, and improving the readability of instrument information. OLED covers the DCI-P3 wide color gamut, with superior color saturation and reproduction compared to LCD, making warning icons, navigation maps, and other details on the instrument panel clearer.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive dashboards, and in particular to a curved luminous screen for vehicle dashboards. Background Technology

[0002] Instrument panels are a general term for any instrument that displays numerical values. The instruments on different car dashboards vary, but common car instruments include speedometers, tachometers, oil pressure gauges, coolant temperature gauges, fuel gauges, and charging gauges. Most instrument displays rely on sensors; these sensors change their resistance based on changes in the state of the monitored object, which is then displayed on the instrument panel. For convenience during nighttime driving, most car instrument panels are now equipped with LED lights. However, since these lights usually need to be manually turned on, and darkness falls very quickly in winter when sunlight is scarce, they can often impair the driver's ability to operate the vehicle. Utility Model Content

[0003] The present invention aims to provide a curved luminous screen for vehicle instrument panel, which adopts self-illuminating technology, eliminates the need for backlight, makes the screen lighter and thinner, and allows each pixel to emit light independently, resulting in lower energy consumption.

[0004] Therefore, the technical solution adopted by this utility model is as follows: a curved light-emitting screen for vehicle instrument panel, including an instrument body, the instrument body including an instrument shell, a mounting plate disposed on the instrument shell and an OLED self-emissive screen disposed on the mounting plate, the mounting plate is provided with a mounting cavity for mounting the OLED self-emissive screen, a control component for controlling the operation of the OLED self-emissive screen is disposed between the mounting plate and the instrument shell, and a glass cover plate for protecting the OLED self-emissive screen is disposed on the mounting plate.

[0005] The OLED self-emissive screen includes a liquid crystal display module connected to a glass cover plate. The liquid crystal display module and the glass cover plate are connected by optical adhesive. The liquid crystal display module includes a polarizing film, a glass encapsulation layer, a low-temperature polycrystalline silicon layer and a graphite sheet layer arranged in sequence.

[0006] As a preferred embodiment of the above solution, the control component includes a PCB circuit board, a connector connected to the PCB circuit board, and electrical components. The connector and electrical components are connected by being covered with conductive cloth. The connector is connected to the PCB circuit board through an FPC circuit board. The PCB circuit board is disposed inside the instrument housing, and the conductive cloth is disposed on the mounting plate.

[0007] More preferably, the back of the instrument housing is provided with a power socket for connecting to a PCB circuit board, the mounting plate is provided with a mounting groove for placing connectors, electrical components, and conductive cloth, and the mounting plate is also provided with a connection guide groove for the FPC circuit board to pass through the mounting plate and connect to the PCB circuit board.

[0008] More preferably, the mounting plate is a rectangle with an inwardly recessed shape and rounded corners around its perimeter, with the mounting cavity located in the center of the recess.

[0009] More preferably, the instrument housing and the mounting plate are connected by bolts.

[0010] More preferably, the light-transmitting cover is adhered to the top of the mounting plate.

[0011] The beneficial effects of this invention are as follows: The car dashboard uses an OLED self-emissive screen, which only needs to supply power to the lit pixels, and the power consumption is 40%-50% lower than that of LCD. It is especially suitable for extending the range of new energy vehicles. Moreover, the self-emissive characteristics of OLED pixels enable its contrast ratio to reach one million to one, and the black display is close to pure black. Especially when driving at night, it can reduce light pollution and improve the visibility of instrument information. OLED covers the DCI-P3 wide color gamut, and its color saturation and reproduction are better than that of LCD. The warning icons, navigation maps and other details of the dashboard are clearer. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0013] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0014] Figure 3 This is a schematic diagram of the mounting plate in this utility model. Figure 1 .

[0015] Figure 4 This is a schematic diagram of the mounting plate in this utility model. Figure 2 .

[0016] Figure 5 This is a schematic diagram of the mounting plate in the PCB circuit board of this utility model.

[0017] Figure 6 This is a schematic diagram of the structure of the instrument housing in this utility model.

[0018] Figure 7 This is an exploded view of this utility model.

[0019] Figure 8 This is a schematic diagram of the installation structure of the electrical components in this utility model.

[0020] Figure 9 This is a schematic diagram of the structure of the OLED self-emissive screen in this utility model.

[0021] Figure 10 yes Figure 9 Enlarged view of point A in the image. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1-10 As shown, a curved light-emitting screen for vehicle instrument panel includes an instrument panel housing 1 and a mounting plate 2 connected to the instrument panel housing 1. An OLED self-emissive screen 3 is mounted on the mounting plate 2. A control component for controlling the operation of the OLED self-emissive screen 3 is provided inside the instrument panel housing 1. A glass cover plate 4 for protecting the OLED self-emissive screen 3 is provided on the mounting plate 2.

[0024] The glass cover 4 is made of 2.5D glass, a product between 2D flat glass and 3D curved glass. Its surface is flat in the middle, with curved edges formed through hot bending and cold processing, combining the stability of flat glass with the aesthetics of curved glass. It features high light transmittance and low reflectivity, improving screen display quality. The edge curvature is ergonomic, enhancing grip comfort. It is also scratch-resistant, wear-resistant, and fingerprint-resistant. This increases the clarity of the car's instrument panel display. Furthermore, the combination of the OLED self-emissive screen 3 and the 2.5D glass ensures the instrument panel's self-illuminating performance during nighttime driving, facilitating driver visibility.

[0025] The glass cover 4 and the OLED self-emissive screen 3 are seamlessly bonded together using optical adhesive 301 or vacuum adsorption to achieve a multi-layered structure. The glass cover 4 and the OLED self-emissive screen 3 are bonded together using optical adhesive 301, or seamlessly bonded together using vacuum adsorption to achieve a multi-layered structure of touch layer, display layer, and protective glass, improving light transmittance and touch sensitivity. The central area of ​​the 2.5D glass is flat, while the edges have a curved transition, combining aesthetics and impact resistance.

[0026] The glass cover 4 is located on the outermost layer of the display module. Its main function is to protect the display panel. Different appearance effects are achieved by screen printing different colored inks, thereby beautifying and decorating the display module assembly.

[0027] Optical Adhesive 301 uses OCA (Optical Clear Adhesive), a colorless, transparent, and optically superior double-sided adhesive. It belongs to the category of pressure-sensitive adhesives and features high light transmittance (over 90%), good bonding strength, and low curing shrinkage. It can cure at room temperature or medium temperature.

[0028] A liquid crystal display module includes electronic components such as a liquid crystal panel, backlight, touch module, IC driver, and PCB circuit board. In an OLED self-emissive screen, the LCM mainly refers to the liquid crystal display module used in conjunction with OLED display technology, and the LCM is primarily responsible for signal processing and display control.

[0029] The polarizing film 302 uses POL (Polarizer), which is mainly made of PVA film and polyvinyl alcohol film. The PVA film plays the role of polarizing light in the OLED self-emissive screen 3. By adsorbing iodine molecules and stretching them, the iodine molecules are arranged in an orderly manner on the PVA film to form a polarizing film 302 with uniform bidirectional absorption function.

[0030] The glass encapsulation layer 303 is a key component that protects the OLED light-emitting layer from external environmental influences. The encapsulation layer typically consists of a glass substrate and a thin film covering it. These films prevent moisture, oxygen, and other impurities from penetrating into the OLED, thereby extending the screen's lifespan. The glass substrate of the encapsulation layer is usually made of special glass with high light transmittance to ensure that light can pass through smoothly without affecting the display effect.

[0031] Low-temperature polysilicon layer 304 has the characteristic of high electron mobility, which can provide faster switching speed and higher resolution, resulting in clearer displays on car dashboards. However, due to the high electron mobility, the leakage current is large, and LTPS cannot support low-frequency dynamic refresh adjustment, resulting in high overall power consumption.

[0032] Graphite sheet 305 is used as a base material for structural support or heat dissipation.

[0033] Among them, the height of the electrical component 9 area is 0.9mm higher than the height of the graphite sheet 305, the height of the connector 7 is higher than the height of the graphite sheet 305, the model of the connector 7 is: FH35C-39S-0.3SHW50, and the conductive cloth 8 adopts a specification of 0.05T.

[0034] The control components include a PCB circuit board 5 housed inside the instrument housing 1 and a connector 7 housed inside the mounting plate 2, which is connected to the PCB circuit board 5 via an FPC circuit board 6. The FPC circuit board has connectors 7 at both ends. The connectors 7 in the mounting plate 2 are connected to electrical components 9 via conductive cloth 8. The PCB circuit board 5 has terminals 502 for connecting to power lines. The instrument housing 1 has a mounting cavity 104 for mounting the terminals 502. The mounting plate 2 has mounting slots 204 for mounting the connectors 7, electrical components 9, and conductive cloth 8. The mounting plate 2 also has a connecting guide slot 205 for the FPC circuit board 6 to pass through the mounting plate 2 and connect to the PCB circuit board 5.

[0035] The connector 7 and electrical components 9 within the mounting plate 2 are connected and covered by conductive cloth 8, and connected to the PCB circuit board 5 via the FPC circuit board 6. An external power supply is connected to the PCB circuit board 5 via a power port on the back of the instrument housing 1, thereby controlling the display of the OLED self-emissive screen 3. The PCB circuit board 5 is located inside the instrument housing 1, and the conductive cloth 8 is located on the mounting plate 2. The back of the instrument housing 1 has terminals 502 for connecting to the PCB circuit board 5. The mounting plate 2 has mounting slots 204 for placing the connector 7, electrical components 9, and conductive cloth 8, and also has connecting guide slots 205 for the FPC circuit board 6 to pass through the mounting plate 2 and connect to the PCB circuit board 5. The mounting slots 204 facilitate the installation of the connector 7, electrical components 9, and conductive cloth 8, and the FPC circuit board is connected to the PCB circuit board 5 via the connecting guide slots 205.

[0036] The inner edge of the instrument housing 1 is provided with several positioning blocks 101 for connecting with the mounting plate 2. The inner edge of the mounting plate 2 is provided with positioning grooves 201 that match the positioning blocks 101. The bottom of the mounting plate 2 is provided with positioning posts 202 for connecting with the instrument housing 1. The instrument housing 1 is provided with positioning cylinders 102 that match the positioning posts 202. The PCB circuit board 5 is provided with positioning holes 501 for the positioning posts 202 to pass through and connect with the positioning cylinders 102. The instrument housing 1 is also provided with screw holes 103 for bolts to be fixedly connected to the mounting plate 2. The mounting plate 2 is provided with threaded cylinders 203 that match the bolts.

[0037] The instrument housing 1 and the mounting plate 2 are positioned and connected by the positioning block 101 and the positioning groove 201. Then, the instrument housing 1 and the mounting plate 2 are connected together by bolts to ensure the stability of the instrument panel. The positioning post 202 set below the mounting plate 2 passes through the positioning hole 501 and is connected to the positioning cylinder 102 on the instrument housing 1, thereby fixing the PCB circuit board 5 and preventing the PCB circuit board 5 from moving.

[0038] A mounting platform 10 for fixing the instrument is provided below the instrument housing 1 and the mounting plate 2. Several connecting holes 11 for inserting connecting posts are spaced apart below the mounting platform 10. Terminal blocks 502 are disposed between two adjacent connecting holes 11. The mounting platform 10, with connecting holes 11, is provided for fixing the instrument panel to the vehicle.

[0039] A liquid crystal display (LCD) bracket 12 is disposed below the mounting plate 2. The LCD bracket 12 includes a mounting area 1201 disposed below the electrical component 9 and grille areas 1202 disposed on the upper and lower sides. The LCD bracket 12 is positioned by a positioning block 101, a positioning post 202, and a threaded cylinder 203, and is connected to the back of the mounting plate 2. The LCD bracket 12 can fix and support the LCD screen, enhance heat dissipation performance, facilitate installation, ensure optical display effect, and improve system integration and compatibility.

[0040] The mounting plate 2 has a mounting cavity 104 for mounting the OLED self-emissive screen 3. The OLED self-emissive screen 3 includes, from top to bottom, a glass cover plate 4, an optical adhesive 301, and a liquid crystal display module. The liquid crystal display module includes, in sequence, a polarizing film 302, a glass encapsulation layer 303, a low-temperature polycrystalline silicon layer 304, and a graphite sheet layer 305. The OLED self-emissive screen 3 uses self-emissive technology, eliminating the need for a backlight. The screen is lighter and thinner, and each pixel emits light independently, resulting in lower energy consumption.

[0041] The glass cover plate 4 has the same shape as the mounting plate 2, and its outer edge is attached to the outer edge of the mounting plate 2 by adhesive. The adhesive fixes the glass cover plate 4 to the car instrument panel, preventing it from loosening or shifting during driving; when used to seal the screen frame, the adhesive also prevents light leakage and moisture from entering, which could affect the display's performance and lifespan; similar to other electronic circuit boards, the circuit boards of the automotive display also require conformal coating to prevent dust and other harmful substances from causing malfunctions.

[0042] By setting up an OLED self-emissive screen 3 and achieving dynamic visual effects, the screen can be dimmed in sections to reduce energy consumption. It only needs to power the lit pixels, and the power consumption is 40%-50% lower than that of LCD. It can still maintain high contrast display under strong light, display car information in real time, avoid the reflection problem of traditional mechanical dials under direct sunlight, and is protected by the instrument housing 1 and glass cover 4 to ensure the strength of the car dial.

[0043] The car dashboard uses an OLED self-emissive screen, which only needs to power the illuminated pixels, resulting in 40%-50% lower power consumption than LCD. This is especially suitable for extending the range of new energy vehicles. Furthermore, the self-emissive nature of OLED pixels allows for a contrast ratio of up to one million, and the black display is close to pure black, which can reduce light pollution, especially when driving at night, and improve the visibility of instrument information. OLED covers the DCI-P3 wide color gamut, and its color saturation and reproduction are superior to LCD, making the warning icons, navigation maps, and other details on the dashboard clearer.

[0044] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A curved surface light emitting screen for a vehicle instrument panel, comprising an instrument panel body, characterized in that: The instrument body includes an instrument housing (1), a mounting plate (2) disposed on the instrument housing (1), and an OLED self-emissive screen (3) disposed on the mounting plate (2). The mounting plate (2) is provided with a mounting cavity (104) for mounting the OLED self-emissive screen (3). A control component for controlling the operation of the OLED self-emissive screen (3) is disposed between the mounting plate (2) and the instrument housing (1). A glass cover plate (4) for protecting the OLED self-emissive screen (3) is disposed on the mounting plate (2). The OLED self-emissive screen (3) includes a liquid crystal display module connected to a glass cover plate (4). The liquid crystal display module and the glass cover plate (4) are connected by optical adhesive (301). The liquid crystal display module includes a polarizing film (302), a glass encapsulation layer (303), a low-temperature polycrystalline silicon layer (304), and a graphite sheet layer (305) arranged in sequence.

2. The curved surface light emitting screen of the vehicle-mounted instrument according to claim 1, characterized in that: The control component includes a PCB circuit board (5), a connector (7) connected to the PCB circuit board (5), and an electrical component (9). The connector (7) and the electrical component (9) are connected by a conductive cloth (8). The connector (7) is connected to the PCB circuit board (5) through an FPC circuit board (6). The PCB circuit board (5) is set inside the instrument housing (1), and the conductive cloth (8) is set on the mounting plate (2).

3. The curved surface light emitting screen of a vehicle-mounted instrument according to claim 2, characterized in that: The back of the instrument housing (1) is provided with a power socket for connecting to the PCB circuit board (5). The mounting plate (2) has a mounting groove (204) for placing the connector (7), electrical components (9), and conductive cloth (8). The mounting plate (2) is also provided with a connecting guide groove (205) for the FPC circuit board (6) to pass through the mounting plate (2) and connect to the PCB circuit board (5).

4. The curved surface light emitting screen of claim 3, wherein: The mounting plate (2) is a rectangle that is recessed inward and has rounded corners around it. The mounting cavity (104) is located in the middle of the recess.

5. The curved surface light emitting screen of claim 3, wherein: The instrument housing (1) and the mounting plate (2) are connected by bolts.

6. The curved surface light emitting screen of claim 3, wherein: The light-transmitting cover is adhered to the top of the mounting plate (2).

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