阅读说明：本技术 一种机动车辅助装置及使用方法、车载显示模组 (Motor vehicle auxiliary device, use method and vehicle-mounted display module ) 是由 王大可 李天马 于洁 李亮 任富健 张齐钧 丁雪枫 王国辉 于 2019-11-20 设计创作，主要内容包括：本发明公开一种机动车辅助装置,包括：电致变色膜层,所述电致变色膜层设置于所述机动车的车载显示模组中；控制器；其中,所述电致变色膜层包括间隔分布的多个电致变色单元,所述多个电致变色单元响应于所述控制器的控制而改变其透光率,所述车载显示模组所发出的光在第一状态下被所述多个电致变色单元部分遮挡以使得未被遮挡的光不入射到所述机动车的前挡风玻璃上。本发明提高了驾驶员的驾驶安全性。(The invention discloses a motor vehicle auxiliary device, comprising: the electrochromic film layer is arranged in a vehicle-mounted display module of the motor vehicle; a controller; the electrochromic film layer comprises a plurality of electrochromic units distributed at intervals, the light transmittance of the electrochromic units is changed in response to the control of the controller, and the light emitted by the vehicle-mounted display module is partially shielded by the electrochromic units in a first state so that the light which is not shielded is not incident on the front windshield of the motor vehicle. The invention improves the driving safety of the driver.)

1. An automotive accessory device, comprising:

the electrochromic film layer is arranged in a vehicle-mounted display module of the motor vehicle;

a controller;

the electrochromic film layer comprises a plurality of electrochromic units distributed at intervals, the light transmittance of the electrochromic units is changed in response to the control of the controller, and the light emitted by the vehicle-mounted display module is partially shielded by the electrochromic units in a first state so that the light which is not shielded is not incident on the front windshield of the motor vehicle.

2. Motor vehicle assistance device according to claim 1,

the vehicle-mounted display module comprises a vehicle-mounted display module, a front windshield of the vehicle and an included angle between the vehicle-mounted display module and the vehicle-mounted windshield of the vehicle, wherein the included angle of the unshielded light is a first angle, and the light-emitting angle of the unshielded light is a second angle, and when the half of the second angle is not larger than the first angle, the unshielded light is not incident on the front windshield of the vehicle.

3. The motor vehicle accessory device of claim 2, wherein the electrochromic cell is isosceles trapezoid or rectangular.

4. The motor vehicle assistance device of claim 3, wherein the second angle is obtained by:

and the alpha is a second angle, the D is a horizontal distance between central lines of the adjacent electrochromic units perpendicular to the direction of the vehicle-mounted display module, the a is the width of the top surface of the electrochromic unit parallel to the direction of the vehicle-mounted display module, the b is the width of the bottom surface of the electrochromic unit parallel to the direction of the vehicle-mounted display module, and the L is the height of the electrochromic unit perpendicular to the direction of the vehicle-mounted display module.

5. The vehicle assist device as set forth in claim 1, wherein the controller is plural, and plural controllers correspond to the plural electrochromic cells one to one.

6. The automotive accessory of claim 1, wherein an adhesive portion is disposed between adjacent electrochromic cells.

7. The utility model provides an on-vehicle display module assembly which characterized in that includes:

a display panel; and

the automotive accessory device of any one of claims 1-6.

8. The vehicle-mounted display module of claim 7, wherein the display panel comprises an LCD display panel, wherein the LCD display panel comprises:

a backlight module;

the lower polarizer is arranged on the backlight module;

the TFT array substrate is arranged on the lower polarized light;

the liquid crystal layer is arranged on the TFT array substrate;

a color film substrate arranged on the liquid crystal layer; and

and the upper polaroid is arranged on the color film substrate.

9. The vehicle-mounted display module according to claim 8, wherein the electrochromic film layer is disposed between the backlight module and the upper polarizer.

10. The device of claim 9, further comprising:

and the protective layers are respectively arranged on two sides of the electrochromic film layer.

11. The vehicle-mounted display module according to claim 10, wherein the electrochromic film layer is disposed between the backlight module and the TFT array substrate, and a plurality of protrusions are disposed on a surface of the protection layer away from the TFT array substrate.

12. The vehicle-mounted display module according to claim 10, wherein the electrochromic film layer is disposed between the TFT array substrate and the upper polarizer, and a plurality of protrusions are disposed on a surface of the protection layer close to the TFT array substrate.

13. The vehicle-mounted display module according to claim 7, wherein the display panel comprises an OLED display panel, and wherein the electrochromic film layer is disposed on a light-emitting side of the OLED display panel.

14. The vehicle-mounted display module of claim 7, further comprising:

a flexible circuit board;

wherein the controller is disposed on the flexible circuit board.

15. Use method of the vehicle-mounted display module according to any one of claims 7 to 14, characterized by comprising the following steps:

when the vehicle-mounted display module is in the first state, the controller responds to the operation of a driver to reduce the light transmittance of the electrochromic film layer, and the light emitted by the vehicle-mounted display module is shielded by the electrochromic units in the first state so that the non-shielded light is not incident on the front windshield of the motor vehicle;

when in the second state, the controller increases the light transmittance of the electrochromic film layer in response to an operation by a driver.

Technical Field

The invention relates to the technical field of intelligent automobiles. More particularly, the invention relates to a motor vehicle auxiliary device, a using method and a vehicle-mounted display module.

Background

Nowadays, display technologies are widely applied to the field of vehicles, the vehicle-mounted display has higher requirements on parameters such as dependency of display screens, brightness, viewing angles and the like than other consumer products and industrial control displays, and the requirements of customers are more and more strict.

At present, the brightness of the existing vehicle-mounted display screen is high, and when the vehicle-mounted display screen works at night, a reflection image (shown in figure 1) is often formed on the front windshield of the vehicle, so that certain influence is caused on the sight of a driver, and great potential safety hazards are brought.

Disclosure of Invention

To solve the technical problems mentioned in the background, a first aspect of the present invention provides an auxiliary device for a motor vehicle, comprising:

the electrochromic film layer is arranged in a vehicle-mounted display module of the motor vehicle;

a controller;

the electrochromic film layer comprises a plurality of electrochromic units distributed at intervals, the light transmittance of the electrochromic units is changed in response to the control of the controller, and the light emitted by the vehicle-mounted display module is partially shielded by the electrochromic units in a first state so that the light which is not shielded is not incident on the front windshield of the motor vehicle.

Optionally, an included angle between a front windshield of the motor vehicle and the vehicle-mounted display module is a first angle, and a light-emitting angle of the unshielded light is a second angle, wherein when half of the second angle is not greater than the first angle, the unshielded light is not incident on the front windshield of the motor vehicle.

Optionally, the electrochromic cell is an isosceles trapezoid or a rectangle.

Alternatively,

and the alpha is a second angle, the D is a horizontal distance between central lines of the adjacent electrochromic units perpendicular to the direction of the vehicle-mounted display module, the a is the width of the top surface of the electrochromic unit parallel to the direction of the vehicle-mounted display module, the b is the width of the bottom surface of the electrochromic unit parallel to the direction of the vehicle-mounted display module, and the L is the height of the electrochromic unit perpendicular to the direction of the vehicle-mounted display module.

Optionally, the number of the controllers is multiple, and the multiple controllers correspond to the multiple electrochromic units one to one.

Optionally, an adhesion part is arranged between adjacent electrochromic units.

The second aspect of the present invention provides a vehicle-mounted display module, including:

a display panel; and

the automotive accessory device of any one of claims 1-6.

Optionally, the display panel comprises an LCD display panel, wherein the LCD display panel comprises:

a backlight module;

the lower polarizer is arranged on the backlight module;

the TFT array substrate is arranged on the lower polarized light;

the liquid crystal layer is arranged on the TFT array substrate;

a color film substrate arranged on the liquid crystal layer; and

and the upper polaroid is arranged on the color film substrate.

Optionally, the electrochromic film layer is disposed between the backlight module and the upper polarizer.

Optionally, the method further comprises:

and the protective layers are respectively arranged on two sides of the electrochromic film layer.

Optionally, the electrochromic film layer is disposed between the backlight module and the TFT array substrate, and a plurality of protrusions are disposed on a surface of the protection layer away from the TFT array substrate.

Optionally, the electrochromic film layer is disposed between the TFT array substrate and the upper polarizer, and a plurality of protrusions are disposed on a surface of the protection layer close to the TFT array substrate.

Optionally, the display panel includes an OLED display panel, wherein the electrochromic film layer is disposed on a light emitting side of the OLED display panel.

Optionally, the method further comprises:

a flexible circuit board;

wherein the controller is disposed on the flexible circuit board.

The third aspect of the present invention provides a method for using the vehicle-mounted display module set provided by the second aspect of the present invention, comprising the following steps:

when the vehicle-mounted display module is in the first state, the controller responds to the operation of a driver to reduce the light transmittance of the electrochromic film layer, and the light emitted by the vehicle-mounted display module is shielded by the electrochromic units in the first state so that the non-shielded light is not incident on the front windshield of the motor vehicle;

when in the second state, the controller increases the light transmittance of the electrochromic film layer in response to an operation by a driver.

The invention has the following beneficial effects:

the technical scheme of the invention has the advantages of clear principle and simple design, when a driver drives a vehicle to run on a road at night, the driver can control the electrochromic unit arranged on the vehicle-mounted display module through the controller to enable the electrochromic unit to reduce the light transmittance (which is equivalent to that the electrochromic unit is in the first state), thereby realizing the function of partially shielding the light emitted by the vehicle-mounted display module, under the shielding reason, on one hand, the unhindered light can not be incident on the front windshield of the motor vehicle, no reflection can be formed on the front windshield, the influence on the sight of the driver due to the reflection formed on the front windshield by the vehicle-mounted display module when the driver drives the vehicle at night is avoided, the driving safety is correspondingly improved, on the other hand, the brightness of the light emitted by the vehicle-mounted display module can be correspondingly reduced, the problem that the driver feels dazzling due to the fact that the brightness of the light emitted by the vehicle-mounted display module is high when a vehicle runs is avoided, the sight of the driver is influenced, and driving safety is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram illustrating a conventional vehicle-mounted display module forming a reflection on a front windshield of a vehicle;

fig. 2 is a block diagram showing a structure of an auxiliary device for a motor vehicle according to an embodiment of the present invention;

FIG. 3 is a schematic view of an angular relationship between a front windshield and an on-board display module of the motor vehicle;

FIGS. 4 to 5 are schematic structural views showing trapezoidal electrochromic cells in the present embodiment;

fig. 6 to 8 are schematic structural views showing rectangular electrochromic cells in the present embodiment; .

Fig. 9 is a block diagram illustrating a vehicle-mounted display module according to another embodiment of the present invention;

FIG. 10 is a schematic layer structure diagram of the vehicle-mounted display module with the display panel being an LCD display panel;

fig. 11 to 12 are schematic diagrams showing layer structures between the electrochromic film layer and the protective layer in the present embodiment;

fig. 13 is a flow chart showing a method for using the vehicle-mounted display module set forth in the above embodiment according to still another embodiment of the present invention.

In the figure: 10. a front windshield; 20. a vehicle-mounted display module; 100. an electrochromic film layer; 101. a trapezoidal structure; 102. a rectangular structure; 110. a first protective layer; 120. a second protective layer; 130. a protrusion; 200. sealing the cover; 300. a light-reflecting layer; 400. a light guide plate; 500. a prism; 600. a frame; 700. soaking cotton; 800. a lower polarizer; 900. a TFT array substrate; 1000. an optical filter; 1100. and (6) an upper polarizer.

Detailed Description

In order to make the technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

One embodiment of the present invention is directed to a vehicle accessory, as shown in fig. 2, which includes an electrochromic film layer 100 and a controller.

Specifically, the electrochromic film 100 in this embodiment is mainly disposed in the vehicle-mounted display module 20, the electrochromic film 100 includes a plurality of electrochromic units distributed at intervals, the plurality of electrochromic units change light transmittance in response to control of the controller, and light emitted by the vehicle-mounted display module 20 is partially blocked by the plurality of electrochromic units in the first state, so that the light that is not blocked is not incident on the front windshield 10 of the motor vehicle.

That is, when the driver drives the vehicle to travel on the road at night, the driver can control the electrochromic unit disposed on the on-board display module 20 through the controller, so that the transmittance of the electrochromic unit is reduced (which is equivalent to that the electrochromic unit is in the first state), thereby realizing the function of partially shielding the light emitted by the on-board display module 20, under the shielding reason, on one hand, the light which is not shielded can not be incident on the front windshield 10 of the motor vehicle, and no reflection can be formed on the front windshield 10, thereby avoiding the influence on the sight of the driver caused by the reflection formed on the front windshield 10 by the on-board display module 20 when the driver drives the vehicle at night, and accordingly improving the driving safety, on the other hand, the brightness of the light emitted by the on-board display module 20 can be correspondingly reduced, the problem that the driver feels dazzling due to the fact that the brightness of the light emitted by the vehicle-mounted display module 20 is high when a vehicle runs, the sight of the driver is influenced is avoided, and driving safety is further improved.

It should be noted that, in order to further improve the uniformity of shading, the pitches of the adjacent electrochromic cells may be set to be the same, in this embodiment, the number and the specification of the electrochromic cells may be set according to the specification of the on-vehicle display module 20, and the specific number and the specification thereof are not specifically limited in this invention.

In a specific implementation manner of this embodiment, the electrochromic film layer 100 mainly refers to a film layer having an electrochromic function, the film layer made of an electrochromic material may be referred to as an electrochromic film layer 100, the controller may provide a voltage for the electrochromic film layer 100, that is, the electrochromic film layer 100 is connected to an external driving circuit that loads a voltage value to the electrochromic film layer 100, and the controller may adjust an optical property of the electrochromic film layer 100 by changing the voltage value loaded on the electrochromic film layer 100, so as to adjust a light transmittance of the electrochromic film layer 100.

Further, as can be seen from the above, the electrochromic film layer 100 includes a plurality of electrochromic cells, and in order to achieve the relative fixing of the electrochromic cells between adjacent electrochromic cells, in this embodiment, an adhesion portion is disposed between adjacent electrochromic cells, and the adhesion portion can fix the adjacent electrochromic cells, and for example, the material of the adhesion portion may be a photo-adhesive.

In some optional implementations of this embodiment, as shown in fig. 3, an included angle between the front windshield 10 of the motor vehicle and the vehicle-mounted display module 20 is a first angle, and a light-emitting angle of the non-shielded light is a second angle, where when half of the second angle is not greater than the first angle, the non-shielded light is not incident on the front windshield 10 of the motor vehicle.

Specifically, in the example of fig. 3, β is an angle between the front windshield 10 of the vehicle and the on-board display module 20, that is, a first angle, and α is an angle of light output of the unobstructed light, that is, a second angle, and as can be seen from fig. 3, when half of the second angle is not greater than the first angle, the unobstructed light is not incident on the front windshield 10 of the vehicle, and further, the above can be expressed by the following formula:

α/2＜β。

in some optional implementations of this embodiment, the electrochromic cell is an isosceles trapezoid or a rectangle.

It should be noted that the shape of the electrochromic unit is not limited to an isosceles trapezoid or a rectangle, and other shapes capable of partially blocking the light emitted from the on-vehicle display module 20 are also within the scope of the invention, such as an irregular shape, a triangle, or other shapes.

Illustratively, when the electrochromic cell is an isosceles trapezoid or a rectangle, the second angle can be obtained by the following formula:

α＝2*arc tan((D-((a+b))/2)/L)；

wherein α is a second angle, D is a horizontal distance between center lines of the adjacent electrochromic units perpendicular to the direction of the vehicle-mounted display module 20, a is a width of a top surface of the electrochromic unit parallel to the direction of the vehicle-mounted display module 20, b is a width of a bottom surface of the electrochromic unit parallel to the direction of the vehicle-mounted display module 20, and L is a height of the electrochromic unit perpendicular to the direction of the vehicle-mounted display module 20.

As shown in fig. 4 and 5, when the electrochromic cells are isosceles trapezoids, the height of the trapezoid structure 101 is 120 μm, the top surface is 10 μm, the bottom surface is 20 μm, and the distance between adjacent trapezoid structures 101 is 50 μm, according to the above design, when the light transmittance of the electrochromic film 100 is reduced by using the controller, the light angle of the light emitted by the on-vehicle display module 20 and not blocked by the electrochromic film 100 can be controlled to be within 41 ° (three light rays are shown in fig. 5, wherein the included angle between the light ray ① and the light ray ② is 41 °), and the light emitting angle of the on-vehicle display module 20 is reduced.

Since the positions of the vehicle-mounted display modules 20 on different vehicle types are different, the first angles between the vehicle-mounted display modules 20 and the front windshield 10 under different vehicle types are also different, and in order to enable the vehicle auxiliary device of the present invention to be suitable for different vehicle types, in some optional implementations of this embodiment, the number of the controllers is multiple, and the multiple controllers correspond to the multiple electrochromic units one to one.

Specifically, the controller can be a plurality of controllers, every controller is connected with corresponding electrochromic unit electrically, thereby can realize the difference control to every electrochromic unit, through the difference control of a plurality of controllers to a plurality of electrochromic units, thereby can come to carry out corresponding adjustment to the light angle of the light that is not sheltered from by electrochromic rete 100 that vehicle-mounted display module 20 sent according to the angle difference between vehicle-mounted display module 20 and the front windshield 10 under, so that the light that is not sheltered from does not incide on the front windshield 10 of motor vehicle, avoid driving the vehicle and travel in night, because of the reflection that vehicle-mounted display module 20 formed on front windshield 10, and cause the influence to driver's sight, corresponding improvement driving safety.

In the following, the present implementation is further described by three examples, for example, as shown in fig. 6, a rectangular structure 102 is used for the electrochromic units, the number of the electrochromic units is 11, and correspondingly, the number of the controllers is also 11, the lengths of the bottom surface and the top surface of the rectangular structure 102 are both 10 μm, the height is 120 μm, and the spacing distance between adjacent rectangular structures 102 is 10 μm;

in a first example, when a driver drives a vehicle to drive at night and a first angle between a front windshield of the vehicle and the vehicle-mounted display module 20 is greater than 10 °, and the driver controls all the electrochromic units to reduce light transmittance through all the controllers, the light ray angle of light emitted by the vehicle-mounted display module 20 and not blocked by the electrochromic film layer 100 can be controlled to be within 10 ° (in the example of fig. 6, three light rays are shown in total, wherein an included angle between the light ray ① and the light ray ③ is 10 °), that is, a second angle is 10 °, and since half of the second angle is not greater than the first angle, the light which is not blocked can be prevented from being incident on the front windshield 10 of the vehicle;

in a second example, when the driver drives the vehicle to run at night and the first angle between the front windshield of the vehicle and the on-board display module 20 is greater than 28 °, the driver controls the single electrochromic cells or the double electrochromic cells to reduce the transmittance (in the example of fig. 7, the transmittances of a, c, e, g, i, and k are reduced) accordingly by the controller, so that the light angle of the light emitted by the on-board display module 20 and not blocked by the electrochromic film layer 100 can be controlled within 28 ° (in the example of fig. 7, three light rays are disclosed, wherein the included angle between the light ray ① and the light ray ③ is 28 °), that is, the second angle is 28 °, and since half of the second angle is not greater than the first angle, the light that is not blocked can not be incident on the front windshield 10 of the vehicle;

in a third example, when the driver drives the vehicle to run at night and the first angle between the front windshield of the vehicle and the on-board display module 20 is greater than 45 °, and the driver controls the electrochromic cells spaced by two rows to reduce the light transmittance through the controller (in the example of fig. 8, the light transmittance of a, d, g, and j is reduced), the light ray angle of the light emitted by the on-board display module 20 and not blocked by the electrochromic film 100 can be controlled within 45 ° (in the example of fig. 8, two light rays are shown, wherein the included angle between the light ray ① and the light ray ② is 45 °), that is, the second angle is 45 °, and since half of the second angle is not greater than the first angle, the light that is not blocked can not be incident on the front windshield of the vehicle.

According to the three examples, the controllers are used for respectively controlling the electrochromic units, so that the light angle of light emitted by the vehicle-mounted display module 20 and not shielded by the electrochromic film layer 100 can be correspondingly adjusted according to the angle difference between the vehicle-mounted display module 20 and the front windshield 10, the light which is not shielded is not incident on the front windshield 10 of the motor vehicle, the vehicle-mounted display module 20 is prevented from forming a reverse image on the front windshield of the motor vehicle, when a driver drives the motor vehicle in the daytime, all the electrochromic units can be controlled by all the controllers to improve the light transmittance, the vehicle-mounted display module 20 can be completely transparent, and the brightness of the display screen cannot be influenced.

Another embodiment of the present invention provides an on-vehicle display module 20, as shown in fig. 9, including:

a display panel; and

the auxiliary device for a motor vehicle described in the above embodiments.

In an optional implementation manner of this embodiment, as shown in fig. 10, the display panel includes an LCD display panel, where the LCD display panel includes:

a backlight module (in the example of fig. 10, the backlight module includes a cover plate, a reflective layer 300, a light guide plate 400, a prism 500, a frame 600, and a foam 700);

a lower polarizer 800 disposed on the backlight module;

a TFT array substrate 900 disposed on the lower polarization;

a liquid crystal layer disposed on the TFT array substrate 900;

a color film substrate arranged on the liquid crystal layer; and

and the upper polarizer 1100 is arranged on the color film substrate.

Specifically, the electrochromic film layer 100 is disposed between the backlight module and the upper polarizer 1100.

Further, the method also comprises the following steps:

further comprising:

and protective layers respectively arranged at two sides of the electrochromic film layer 100.

Specifically, the protective layers disposed on both sides of the electrochromic film layer 100 mainly play a role in protecting the electrochromic film layer 100.

It should be noted that, because the pixel points on the TFT array substrate 900 and the plurality of electrochromic units in the electrochromic film layer 100 are all fixedly arranged, when the vehicle-mounted display module 20 emits light, moire is easily generated, thereby the imaging effect of the vehicle-mounted display module 20 is affected, in order to solve this problem, the plurality of protrusions 130 can be arranged on the surface of the protective layer at the two sides of the electrochromic film layer 100 according to the arrangement position of the electrochromic film layer 100, so that the light emitted by the vehicle-mounted display module 20 can be scattered by the plurality of protrusions 130, and the effect of eliminating moire is achieved.

In some optional implementations of the present embodiment, the electrochromic film layer 100 is disposed between the backlight module and the TFT array substrate 900, and a plurality of protrusions 130 are disposed on a surface of the protection layer away from the TFT array substrate 900.

Specifically, as shown in fig. 11, the first protection layer 110 is farther from the TFT array substrate 900 than the second protection layer 120, when light emitted by the vehicle-mounted display module 20 passes through the TFT array substrate 900, the light passes through the electrochromic film layer 100 to be correspondingly shielded, and the light passes through the surface of the first protection layer 110 far from the TFT array substrate 900 again to be scattered and emitted after being shielded, so as to eliminate moire fringes.

In some optional implementations of the present embodiment, the electrochromic film layer 100 is disposed between the TFT array substrate 900 and the upper polarizer 1100, and a plurality of protrusions 130 are disposed on a surface of the protection layer close to the TFT array substrate 900.

Specifically, as shown in fig. 12, compared with the first protection layer 110, the second protection layer 120 is close to the TFT array substrate 900, when light emitted by the vehicle-mounted display module 20 passes through the TFT array substrate 900, the light is scattered by the protrusion 130 on the surface of the protection layer close to the TFT array substrate 900, and the light after being swept is correspondingly shielded and emitted by the electrochromic film layer 100 again, so as to eliminate moire fringes.

It should be noted that, in the present embodiment, the number and the size of the protrusions 130 disposed on the protection layer can be set according to the size of the electrochromic film layer 100, and the specific value is not limited in the present invention.

In some optional implementations of this embodiment, the display panel includes an OLED display panel, wherein the electrochromic film layer 100 is disposed on a light emitting side of the OLED display panel.

In some optional implementations of this embodiment, the method further includes:

a flexible circuit board;

wherein the controller is disposed on the flexible circuit board.

Specifically, the flexible circuit board is mainly used for providing a driving voltage to the vehicle-mounted display module 20 to drive the vehicle-mounted display module 20 to operate, and the controller is disposed on the flexible circuit board, so that the overall device structure can be more compact, and it should be noted that, in this embodiment, the position of the flexible circuit board can be set according to actual needs, for example, the flexible circuit board can be disposed between the TFT array substrate 900 and the upper polarizer 1100, here, the controller is disposed on the flexible circuit board for convenience, and therefore, the electrochromic film layer 100 can be disposed at a position closer to the TFT array substrate 900, for example: the electrochromic film layer 100 is disposed between the lower polarizer 800 and the backlight module.

Still another embodiment of the present invention provides a method for using the vehicle-mounted display module 20 provided in the above embodiment, as shown in fig. 13, including the following steps:

when in the first state, the controller reduces the light transmittance of the electrochromic film layer 100 in response to the operation of the driver, and the light emitted by the vehicle-mounted display module 20 is shielded by the plurality of electrochromic units in the first state so that the non-shielded light is not incident on the front windshield 10 of the motor vehicle;

when in the second state, the controller increases the light transmittance of the electrochromic film layer 100 in response to the driver's operation.

It should be noted that, in the present embodiment, the first state should be understood as that the driver is in a state that requires to reduce the light transmittance of the electrochromic film layer 100, for example, when the driver is at night, and the second state should be understood as that the driver is in a state that requires to increase the light transmittance of the electrochromic film layer 100, for example, when the driver is at day.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.