WO2020124564A1

WO2020124564A1 - Display device and control method, and vehicle display instrument

Info

Publication number: WO2020124564A1
Application number: PCT/CN2018/122707
Authority: WO
Inventors: 王文博
Original assignee: 黑龙江天有为电子有限责任公司
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2020-06-25

Abstract

The present invention relates to a display device and a control method, and a vehicle display instrument. The display device comprises a liquid crystal display panel, a filter panel, a display, and backlight sources. The liquid crystal display panel is provided in front of the display, and is electrically connected to an external controller. The liquid crystal display panel comprises at least one display region and at least one controllable transmissive region. The filter panel is provided behind the liquid crystal display panel, and comprises filter parts arranged corresponding to each display region. The backlight sources are provided behind each filter part of the filter panel. The display is provided behind the controllable transmissive region. In a powered-on condition, the whole of the controllable transmissive region is in a transmissive state, so as to cause information displayed by the display to be able to pass through the controllable transmissive region. In a powered-off condition, the display regions and the controllable transmissive region are all in a non-transmissive state. The present display device features a simple structure and a clear and attractive visual effect, and is able to prevent eye strain from occurring in a user when viewed for long periods of time.

Description

Display device and control method, vehicle display instrument

Technical field

The invention relates to a display device and a control method of the display device. The invention also relates to a vehicle display instrument.

Background technique

As the vehicle becomes more intelligent and entertaining, car instrumentation becomes particularly important. It is necessary to realize the specialization of vehicle information as soon as possible, comprehensive display, accurate display, and clear display. The text part, tick marks, and marks of the instrument panel indicate the light-transmitting area. The rest of the area is usually painted with black paint with good shading effect. A light-emitting device is placed behind the instrument panel to illuminate the entire dial after power-on, and other parts are opaque. Light, due to the large color difference between the shade and the light transmission, the displayed light atmosphere is not satisfactory. The driver looks at the instrument panel for a long time, and his eyes are easily fatigued. In addition, if the entire display area of the instrument panel is displayed using a color LCD screen, the shape of the instrument panel is too irregular compared to the rectangular shape of the conventional color LCD screen, on the one hand, it will cause serious waste of the color LCD screen. On the other hand, there are problems such as difficulty in cutting or large space occupation. These problems will cause high costs.

Summary of the invention

The purpose of the present invention is to solve the above technical problems, and further proposes a display device and its control method, and a vehicle display instrument using the display device.

The display device of the present invention includes a liquid crystal display panel, at least one filter plate, a display, and a background light source. The liquid crystal panel is disposed on the front side of the display. The liquid crystal display panel includes a first glass plate, a second glass plate, and a first glass plate. The liquid crystal, the electrode, and the electrical interface between the second glass plates. The electrode is electrically connected to an external controller through the electrical interface to control the orientation of the liquid crystal. The liquid crystal display panel includes at least one display area and at least one controllable light transmission area. The light plate is arranged on the rear side of the liquid crystal display panel, and includes a filter portion corresponding to each display area, the background light source is provided on the rear side of each filter portion of the filter plate, and the display is arranged on the rear side of the controllable light transmission area , Each display area includes a plurality of controllable display units, respectively corresponding to different filter areas on the filter section of the filter plate, and can be displayed separately under the control of electric signals; The whole is in a light-transmitting state, so that the information displayed on the display can pass through the light-transmitting area. In the case of power off, each display area and each controllable light-transmitting area are in a light-impermeable state.

A further preferred solution of the present invention is that: when the display device is powered off, the entire liquid crystal display panel is black.

A further preferred solution of the present invention is: there are a plurality of background light sources, at least a part of which corresponds to at least a part of the controllable display unit,

A further preferred solution of the present invention is that at least a part of the background light source is synchronized with at least a part of the controllable display unit.

A further preferred solution of the present invention is that at least a part of the background light source is a color light source.

A further preferred solution of the present invention is that a plurality of filter areas of the filter plate are set as color filter areas.

A still further preferred solution of the present invention is that on each filter portion of the filter plate, the area other than the filter area is a black shading area.

A further preferred solution of the present invention is that it further includes a sound module, which is connected to an external controller and used to cooperate with the display information of the display device to perform sound output.

The vehicle display instrument of the present invention includes any of the above display devices, and further includes a controller and a sensor signal connection port and/or a CAN receiver connection port connected to the controller.

A further preferred solution of the vehicle display instrument of the present invention is that: when power is turned on, a first outline pattern is displayed at a position close to the display area in the display, and a second outline pattern is displayed in the display area , The first outline pattern cooperates with the second outline pattern to jointly form the outline of the vehicle speedometer and/or tachometer.

A further preferred solution of the vehicle display instrument of the present invention is that a part of the plurality of controllable display units is configured in the shape of a vehicle instrument indicator.

The method for controlling any of the above display devices of the present invention includes the steps of:

S100, the system is powered on;

S200. An external controller controls the operation of the liquid crystal display panel, the display, and the background light source, wherein controlling the operation of the liquid crystal display panel includes controlling the controllable light transmitting area to be in a light transmitting state as a whole and controlling the display At least a part of the zone can be displayed by a controllable display unit.

A further preferred solution of the method of the present invention is: in the display device, there are a plurality of background light sources, at least a part of which corresponds to at least a part of the controllable display unit;

In the step S200, the external controller synchronously controls the correspondingly set background light source and controllable display unit.

A further preferred solution of the method of the present invention is: in the display device, a part of the controllable display units in the display area are arranged in an arc pattern;

In the step S200, the external controller controls the light transmittance of each controllable display unit constituting the arc pattern so that the first area and the second area of the arc pattern exhibit different brightnesses, wherein The first area and the second area are adjacent to each other, and the boundary between the first area and the second area dynamically changes according to an external signal received by an external controller.

The beneficial effects of the present invention are: the liquid crystal display panel of the display device of the present invention has two areas of controllable light transmission and controllable display, and when used in combination with the display, the function is more diversified; the display device of the present invention uses a color background light source and/or Or color filter area, can realize the display of multiple colors, effectively solve the color display technology can only be achieved through the complex circuit structure arrangement, and the visual effect is very obvious. The invention also improves the aesthetic effect of the display device in two states of power-on display and power-off.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of the appearance effect of a display device according to a preferred embodiment of the present invention in a power-on state;

2 is a schematic diagram of the appearance effect of the display device of FIG. 1 in a power-off state;

3 is an exploded schematic view of the display device of FIG. 1;

4 is a schematic diagram of a liquid crystal display panel in the display device of FIG. 1;

5 is a system block diagram of a vehicle display meter according to a preferred embodiment of the present invention.

Reference signs: 1-display device, 2-liquid crystal display panel, 3-filter plate, 4-display, 5-background light source, 6-filter area, 7-display area, 8-controllable light transmission area, 9- Controllable display unit

detailed description

As shown in FIGS. 1-3, the display device 1 of the present invention includes a liquid crystal display panel 2, a filter plate 3, a display 4, and a background light source 5.

Specifically, as shown in FIG. 3, the liquid crystal display panel 2 is disposed on the front side of the display 4, and includes a first glass plate, a second glass plate, a liquid crystal located between the first glass plate and the second glass plate, electrodes, and Electrical interface, wherein the electrode is electrically connected to an external controller through the electrical interface to control the orientation of the liquid crystal. The liquid crystal display panel 2 includes at least one display area 7 and at least one controllable light-transmitting area 8 (as shown in FIGS. 3 and 4 ), and a filter plate 3 is provided on the rear side of the liquid crystal display panel 2, including The area 7 corresponds to the provided filter. For example, in the illustrated preferred embodiment, the liquid crystal display panel 2 includes two display areas 7 on the left and right, and the filter portion 3 also includes two filter portions on the left and right. The background light source 5 is disposed on the rear side of each filter portion of the filter plate 3, and the display 4 is disposed on the rear side of the controllable light transmission area 8. Each display area 7 includes a plurality of controllable display units 9 (as shown in FIGS. 3 and 4 ), and these controllable display units 9 respectively correspond to different filter areas 6 on the filter portion of the filter plate 3, The plurality of controllable display units 9 can display separately under the control of electric signals, and these controllable display units 9 are preferably arranged in various predetermined patterns and/or shapes. As shown in FIG. 1, under the condition of power on, the controllable light-transmitting area 8 is in a light-transmitting state as a whole, so that the information displayed on the display 4 can pass through the controllable light-transmitting area 8, and each display area 7 Part of the controllable display unit 9 is in a light-transmitting state to display a predetermined pattern and/or shape; as shown in FIG. 2, when the power is turned off, all the controllable display units 9 of each display area 7 are The controllable light-transmitting areas 8 are all in a light-impermeable state, so that the liquid crystal display panel 2 does not display any information, and at this time, the entire liquid crystal display panel 2 is preferably black. However, for ease of explanation, the outlines of the controllable light-transmitting area 8 and all the controllable display units 9 are clearly shown in FIGS. 3 and 4. As mentioned above, these outlines are not displayed at the same time in actual work Come out, but will display some of them (working status) under control, or not display any at all (non-working status).

The display principle of the display area 7 is as follows: after the corresponding controllable display unit 9 is powered on, it enters the light-transmitting state under the control of the external controller, and at the same time, the background light source 5 on the rear side is energized to emit light, and the light beam passes through the corresponding of the filter plate 3 After filtering by the filter area 6, it is irradiated onto the controllable display unit 9 in a light-transmitting state, so that the light of a specific color (mainly determined by the filter area 6) takes a predetermined shape (by the shape of the controllable display unit 9) (Decision) projected, and finally showed the LCD display effect. The display 4 is preferably a color liquid crystal screen, such as a TFT screen.

In the display device 1 of the present invention, due to the different settings of the display area 7 and the controllable light transmission area 8 on the liquid crystal display panel 2, and the cooperation of the display area 7 with the filter plate 3 and the background light source 5, the display device 1 can be simultaneously The display information of the display 4 and the display information of the display area 7 are presented, so that the display 4 and the display area 7 display cooperatively to achieve the overall display effect; at the same time, due to the power off each display area 7 and each controllable light transmission The areas 8 are all opaque, and the display device 1 can be in a black screen overall, regardless of whether the internal display 4 and the background light source 5 work, thereby further improving the overall sense of the display device 1.

Since the liquid crystal display panel 2 can be realized with a segment code liquid crystal screen, its cost is much lower than that of a color liquid crystal screen, and it is easy to make various complicated outline shapes. Therefore, the display device 1 of the present invention can realize a large size at a low cost For an area of color liquid crystal display, it is not necessary to use a color liquid crystal screen as a whole, and the outer contour of the display device 1 can be easily complicated, for example, having an arc-shaped outer contour, etc., and display control is also easy to implement.

The display device 1 of the present invention is particularly suitable for vehicle display instruments. For this reason, as an example, as shown in FIGS. 1-4, the liquid crystal display panel 2 includes a controllable light-transmitting area 8 and two display areas 7, wherein the controllable The light-transmitting area 8 is arranged centrally, preferably in a rectangular shape, and the two display areas 7 are arranged symmetrically on both sides of the controllable light-transmitting area 8. Correspondingly, the display device 1 is provided with a display 4, and the display 4 is a color liquid crystal screen of a rectangular shape, and the filter section of the filter plate 3 and the background light source 5 are provided on the rear sides of the two display areas 7. Among them, the filter plate 3 may be a whole, and at this time, it includes two filter sections located on the rear side of the two display areas 7 and a connecting section connecting the two filter sections. Of course, the filter plate 3 may also only include each other Separated two filters.

The size of the liquid crystal display panel 2 is larger than the size of the display 4 and covers the front side of the display 4, the display 4 is electrically connected to an external controller, the shape of the filter plate 3 can be adapted to the shape of the display area 7 of the liquid crystal display panel 2, and Preferably, it can be pasted on the back side of the display area 7.

The display area 7 includes a plurality of controllable display units 9, which can correspond to a plurality of different filter areas 6 on the filter plate 3, respectively, so that these controllable display units 9 respectively display the corresponding filter areas 6 The color of the filtered light. A plurality of background light sources 5 are provided on the rear side of the filter portion of the filter plate 3, and a plurality of filter areas 6 may be provided corresponding to the plurality of background light sources 5, for example, one-to-one correspondence. Of course, according to the needs of the display, multiple filter areas 6 may share one or a group of background light sources 5, or one filter area corresponds to multiple background light sources 5. In addition, according to the needs of the display, part of the background light sources in the plurality of background light sources 5 can also be set as color light sources, so that the corresponding controllable display unit 9 displays a predetermined color.

Preferably, each background light source 5 can be controlled synchronously with the corresponding controllable display unit 9, for example, when the controllable display unit 9 activates the display function (that is, in a light-transmitting state), the corresponding background light source 5 lights up, otherwise, the When the controllable display unit 9 turns off the display function (that is, in the opaque state), the corresponding background light source 5 is turned off, thereby not only reducing energy consumption and heat generation, but also helping to improve the clarity of the display. The background light source 5 may be, for example, an incandescent lamp or LED.

Preferably, part of the filter regions 6 in the plurality of filter regions 6 may be set as color filter regions, for example, set to different colors as needed, so that the corresponding controllable display unit 9 displays the desired color. Preferably, the color filter area 6 cooperates with the background light source 5 of the same color to further enhance the color effect displayed by the controllable display unit 9. In this way, the liquid crystal display panel 2 can realize color display at low cost and conveniently. Compared with the prior art, which requires the internal circuit of the liquid crystal display panel and the light emitting light source to be arranged through a complex design, the color display function realized by this arrangement is more convenient. The cost is less, and the display effect is basically the same as the color display.

Further, other areas on the filter portion of the filter plate 3 except for the respective filter areas 6 can be set as black light-shielding areas, which can improve the optical density of the display device 1 and prevent stray light leakage, thereby further ensuring the display Clarity.

As can be seen from FIG. 1, when the display device 1 of the present invention is used in a vehicle display instrument, it can present a strong overall feeling. The display areas 7 on the left and right sides are basically consistent with the display 4 in the middle, achieving full color. The effect of the LCD display makes it look like a whole color LCD display. As shown in FIG. 2, when the display device 1 of the present invention is turned on without powering on, the display area 7 and the controllable light-transmitting area 8 of the liquid crystal display panel 2 are black, that is, the whole is black and opaque. Therefore, the internal structure of the display device cannot be seen from the outside (for example, the presence of the display 4 cannot be seen), and the effect of a whole display screen is still presented to the outside, which can increase the aesthetic effect of the display device 1.

Preferably, the display device 1 of the present invention may further include a sound module. The sound module is connected to an external controller and used to cooperate with the display information of the display device 1 to perform sound output, such as sound warning.

As mentioned above, the display device 1 of the present invention is particularly suitable for vehicles, such as being used as a vehicle display instrument. Therefore, another aspect of the present invention also provides a vehicle display instrument, as shown in FIG. 5, which includes the present invention The display device 1 provided above includes a liquid crystal display panel 2, a display 4 and a background light source 5, and also includes a controller and a sensor signal connection port and/or a CAN receiver connection port connected to the controller for The sensor signal and/or the output signal of the CAN receiver is received to control the display device 1 based on the corresponding signal.

As shown in FIG. 5, in a specific implementation, the controller can control the display 4 via a display driver. At the same time, considering the different requirements of the display 4 and the liquid crystal display panel 2 for power supply, the vehicle display instrument of the present invention is the display 4 An independent display power supply is provided, and the liquid crystal display panel 2 can be directly powered by the controller. In addition, the vehicle display instrument of the present invention also includes a buzzer or a speaker connected to the controller, and also includes an alarm signal connection port. When the controller receives the corresponding alarm signal or sensor signal, it can pass the bee as needed. Sound from the buzzer or speaker.

In order to make full use of the limited space inside the vehicle, and at the same time to achieve the best display effect on the basis of ensuring a lower cost, as shown in FIG. 1, when the vehicle display instrument of the present invention is powered on, the display 4 is close to A first outline pattern is displayed at the position of the display area 7, for example, an arc outline, and a second outline pattern is displayed in the display area 7, for example also an arc outline, and the first outline pattern and the The second contour patterns cooperate to form the contours of the vehicle speedometer and/or tachometer. For example, taking the situation shown in FIGS. 1-4 as an example, the two display areas 7 are located on the left and right sides of the display 4 respectively, and the left and right ends of the liquid crystal display panel 2 are arc-shaped. Correspondingly, the two display areas 7 The controllable display unit 9 on the outer edge of the display can display a circular arc-shaped second contour pattern, and the position on the display 4 near the display area 7 can display the circular arc-shaped first contour pattern, the first contour pattern and the first The two contour patterns are substantially co-circular, so that a circular pattern can be visually presented. In this way, the vehicle display instrument of the present invention can display a total of two circular patterns on the left and right ends, which are used as the contours of the vehicle speedometer and tachometer, respectively ,As shown in Figure 1. Among them, the area within the outline includes two parts, one is the display area of the display area 7 and the other is the display area of the display 4, so other information (such as various indicators, etc.) usually displayed on the speedometer and tachometer ) Can be displayed by the display 4 and the controllable display unit 9 of the display area 7 respectively. For example, a part of the controllable display unit 9 can be directly constructed in the shape of a vehicle instrument indicator, so that the relevant indicator pattern is directly displayed on the display area 7, and the display 4 can be displayed at a predetermined position under the control of the display driver Additional indicator patterns. The middle area of the display 4, that is, the area between the two first outline patterns, is used to display driving computer information, for example, the vehicle photo and average fuel consumption information are displayed in FIG. 1.

Thus, the vehicle display instrument of the present invention can organically unify the display results of the display 4 and the display area 7 so that the two can cooperate to complete the predetermined display work.

Preferably, in order to make the display of the corresponding speedometer and tachometer more intuitive, in the vehicle display instrument of the present invention, each display area 7 is additionally provided with a group of controllable display units 9 and the group of controllable displays The units 9 are arranged in an arc pattern, for example, arranged inside the arc of the aforementioned second arc-shaped contour pattern, and used to display the scale of the corresponding speedometer or tachometer, as shown in FIG. 1. When it is necessary to display the corresponding vehicle speed or speed, the controller can control one part of the group of controllable display units 9 to display and the other part not to display, and dynamically adjust the display and non-display controllable according to the real-time data of the vehicle speed or speed The limits of the display unit 9 are simulated to show the yaw function of the hands.

Preferably, the controller can control the light transmittance of each of the set of controllable display units 9, so that each of the controllable display units 9 can present different brightness, therefore, when it is necessary to simulate the display needle bias During the pendulum function, you can control a part of the controllable display unit 9 to display the first brightness, and another part of the controllable display unit 9 to display the second brightness, and also dynamically adjust the first brightness and the second brightness according to the real-time data of the vehicle speed or speed The limits of the controllable display unit 9 make the display effect clearer and more comprehensive.

As an example, for the aforementioned group of controllable display units 9, the lower end of the arc pattern corresponds to zero speed or zero vehicle speed, and the upper end corresponds to the upper limit of speed or vehicle speed. Therefore, after the system is powered on, all The controllable display unit 9 defaults to display with a first brightness with a lower brightness. When the vehicle starts to have a speed or speed, the corresponding controllable display unit 9 can be started with a second with a higher brightness from the lower end of the arc pattern. The brightness is displayed, and as the vehicle speed or rotation speed increases, the number of controllable display units 9 displayed at the second brightness is sequentially increased to simulate and display the effect of the dynamic deflection of the hands with the vehicle speed or rotation speed.

For example, in the effect diagram of FIG. 1, the display area 7 on the left shows the rotation speed, and the current rotation speed is 2.5×1000r/min. In a group of controllable display units 9 for rotation speed display, corresponding to the scale value 0 to the scale The part of the controllable display unit with a value of 2.5 exhibits a second brightness with a higher brightness, and those controllable display units corresponding to a scale value above 2.5 exhibit a first brightness with a lower brightness, and, as the speed changes, the first The boundary between the brightness area and the second brightness area changes dynamically; similarly, the display area 7 on the right shows the vehicle speed, the current vehicle speed is 80km/h, then in a group of controllable display units for vehicle speed display, corresponding to the scale value 0 The part of the controllable display unit up to the scale value 80 exhibits the second brightness with higher brightness, and those controllable display units corresponding to the scale value above 80 present the first brightness with lower brightness, and, as the vehicle speed changes, The boundary between the first brightness area and the second brightness area changes dynamically.

The working principle of the vehicle display instrument of a preferred embodiment of the present invention is: when the car key is turned ON, the body electrical system starts to supply power to the display device, the regulated power supply provides 5V power to the controller, and the controller starts to follow the preset The program works. First, it collects and processes various hard-wired signals, analog signals, network signals, and switching signals. At the same time, the monitor power supply starts to supply power to the monitor. When the controller completes the processing of various input signals, the controller starts driving the liquid crystal. The display panel (controllable light transmittance area transmittance, partial controllable display unit display area display), display, background light source for on-screen display of related information, in addition, you can also set a buzzer in the display device, and buzzer The controller is connected to the controller, and according to the control signal of the controller, it cooperates with the display information of the display device to perform synchronous sound warning. During the driving process of the vehicle, the controller has been processing the collected vehicle signals and carries out the vehicle through the display device in real time. Information display and sound warning.

Although as a preferred solution, the display device of the present invention can be used as a vehicle display instrument, however, the display device is not limited to vehicles, but can also be used in many other occasions, which can effectively reduce the cost of raw materials for color LCD screens. Effectively expand the display area, and the shape of the display area does not need to be limited to the regular shape of the color LCD screen, so as to achieve a better display effect at a lower cost, especially the neat appearance of the display device, and the overall color LCD screen display effect is very Close.

The following briefly describes the control method of the display device 1 of the present invention. The method includes steps:

S100, the system is powered on;

S200. The external controller controls the operation of the liquid crystal display panel 2, the display 4, and the background light source 5, wherein controlling the operation of the liquid crystal display panel 2 includes controlling the controllable light transmitting area 8 as a whole in a light transmitting state And control at least a part of the controllable display unit 9 of the display area 7 to perform display.

In this way, when the background light source 5 is working and a part of the controllable display unit 9 is displaying, the light of the background light source 5 can be projected through the corresponding controllable display unit 9 after being filtered by the corresponding filter plate 3, thereby realizing a specific The display of patterns or information; and in the case where the controllable light-transmitting area 8 is entirely transparent (forming a see-through window), and the display 4 works, the display content of the display can be displayed through the controllable light-transmitting area 8. Thus, the omnidirectional display of the display device 1 can be realized, and a display effect approximately equivalent to the overall color liquid crystal screen can be presented.

Preferably, in the display device 1, when there are a plurality of background light sources 5, and at least a part of them is set corresponding to at least a part of the controllable display unit 9, in step S200, the external controller synchronously controls Correspondingly set background light source 5 and controllable display unit 9. That is, for the background light sources 5 and the controllable display unit 9 that are provided in one-to-one correspondence or in groups, the external controller can simultaneously control the lighting of the background light source 5 and the display of the controllable display unit 9 (that is, light transmission), That is, when a certain controllable display unit 9 is required for display, the controllable display unit 9 can be made transparent, and the corresponding background light source 5 can be lit, otherwise, the controllable display unit 9 can be made opaque At the same time, the corresponding background light source 5 is turned off, thereby saving energy, reducing heat, and reducing stray light leakage and other phenomena.

Preferably, especially in the case where the display device is used for a vehicle display instrument, when a part of the controllable display unit 9 in the display area 7 is arranged in an arc pattern, in step S200, the external controller passes Controlling the light transmittance of each controllable display unit 9 constituting the arc pattern, so that the first area and the second area of the arc pattern exhibit different brightness (for example, the first area is bright and the second area is not bright) , Or the first area has a higher brightness and the second area has a lower brightness), wherein the first area and the second area are adjacent to each other, and the boundary between the first area and the second area According to the external signal received by the external controller (such as speed signal or vehicle speed signal, etc.) dynamically change. The above control method can simulate and display the effect of the dynamic deflection of the hands of the speedometer, tachometer, etc. in the display area 7, so as to achieve the optimal display effect.

In specific implementation, the liquid crystal display panel 2 can be realized by a segment code liquid crystal screen. In order to enable the light transmittance of the same controllable display unit 9 to exhibit more than two different levels, the orientation of the liquid crystal inside the controllable display unit 9 can be controlled To achieve: for example, control all the liquid crystals to turn to the light-transmitting state to achieve the maximum light transmittance; control part of the liquid crystals to turn to the light-transmitting state, and the other part to maintain the light-shielding state to achieve reduced light transmittance; control all the liquid crystals Keep the light-shielded state, you can achieve opacity.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations to the present invention, and those of ordinary skill in the art can understand the above within the scope of the present invention. The embodiments are changed, modified, replaced, and modified.

Claims

A display device includes a liquid crystal display panel (2), a filter plate (3), a display (4), and a background light source (5), the liquid crystal display panel (2) is disposed on the front side of the display (4), The liquid crystal display panel (2) includes a first glass plate, a second glass plate, a liquid crystal located between the first glass plate and the second glass plate, an electrode, and an electrical interface, and the electrode is electrically connected to an external controller through the electrical interface In order to control the orientation of the liquid crystal, the liquid crystal display panel (2) includes at least one display area (7) and at least one controllable light transmission area (8), the filter plate (3) is disposed on the liquid crystal display panel ( 2) The back side includes a filter part corresponding to each display area (7), and the background light source (5) is provided on the back side of each filter part of the filter plate (3), the A display (4) is arranged on the rear side of the controllable light transmission area (8), and each display area (7) includes a plurality of controllable display units (9), respectively corresponding to the filtering of the filter plate (3) With different filter areas (6) on the light section, the plurality of controllable display units (9) can respectively display under the control of electrical signals; when power is applied, the controllable light-transmitting area (8) The whole is in a light-transmitting state, so that the information displayed by the display (4) can pass through the controllable light-transmitting area (8). In the case of power off, the display area (7) and the The light-controlling areas (8) are all in the opaque state.
The display device according to claim 1, wherein when the display device (1) is powered off, the entire liquid crystal display panel (2) is black.
The display device according to claim 1 or 2, wherein there are a plurality of background light sources (5), at least a part of which corresponds to at least a part of the controllable display unit (9).
The display device according to claim 3, wherein at least a part of the background light source (5) is synchronized with at least a part of the controllable display unit (9).
The display device according to claim 3, wherein at least a part of the background light source (5) is a color light source.
The display device according to any one of claims 1 to 5, wherein a part of the filter area (6) of the filter plate (3) is provided as a color filter area.
The display device according to claim 6, characterized in that each filter portion of the filter plate (3) except for the filter area (6) is a black light-shielding area.
The display device according to any one of claims 1-7, further comprising a sound module, the sound module is connected to an external controller and used to cooperate with the display information of the display device (1) to perform sound output.
A vehicle display instrument, characterized by comprising the display device according to any one of claims 1-8, and further comprising a controller and a sensor signal connection port and/or a CAN receiver connection port connected to the controller.
The vehicle display instrument according to claim 9, characterized in that when power is supplied, a first outline pattern is displayed on the display (4) near the display area (7), and the display A second outline pattern is displayed in the area (7), and the first outline pattern cooperates with the second outline pattern to jointly form the outline of the vehicle speedometer and/or tachometer.
The vehicle display instrument according to claim 9 or 10, wherein a part of the plurality of controllable display units is configured in the shape of a vehicle instrument indicator.
A method for controlling a display device according to any one of claims 1-8, characterized in that it comprises the steps of:

S100, the system is powered on;

S200. An external controller controls the operation of the liquid crystal display panel, the display, and the background light source, wherein controlling the operation of the liquid crystal display panel includes controlling the controllable light transmitting area to be in a light transmitting state as a whole and controlling the display At least a part of the zone can be displayed by a controllable display unit.
The method of claim 12, wherein:

In the display device, there are a plurality of background light sources, at least a part of which corresponds to at least a part of the controllable display unit;

In the step S200, the external controller synchronously controls the correspondingly set background light source and controllable display unit.
The method of claim 12, wherein:

In the display device, a part of the controllable display units in the display area are arranged in an arc pattern;

In the step S200, the external controller controls the light transmittance of each controllable display unit constituting the arc pattern so that the first area and the second area of the arc pattern exhibit different brightnesses, wherein The first area and the second area are adjacent to each other, and the boundary between the first area and the second area dynamically changes according to an external signal received by an external controller.