CN220962064U - Display device, car window display device and control system thereof - Google Patents

Abstract

The utility model discloses a display device, which comprises an upper substrate, a lower substrate and a liquid crystal layer, wherein the liquid crystal layer is clamped between the upper substrate and the lower substrate, a common electrode and a pixel electrode are respectively arranged on the inner side surfaces of the upper substrate and the lower substrate, the liquid crystal layer is a polymer network layer formed by adding polymers into positive nematic liquid crystal molecules, the display device further comprises an LED light source and a TFT unit, the LED light source is arranged on the side edges of the upper substrate and the lower substrate, the TFT unit is arranged on the lower substrate, and the TFT unit is electrically connected with the pixel electrode. The utility model solves the privacy protection problem of passengers in the vehicle, and realizes the mutual switching of the transparent state and the privacy state of the vehicle window and the color display of the vehicle window information. The utility model discloses a vehicle window display device and a control system thereof.

Description

Display device, car window display device and control system thereof

Technical Field

The present utility model relates to the field of window display, and in particular, to a display device, a window display apparatus, and a control system thereof.

Background

Along with the continuous progress of automobiles and display technologies, people put forward higher and higher requirements on automobile window glass, and the traditional automobile window is used as a main channel for passengers or drivers to obtain information outside the automobile, has only a light transmission function, cannot realize a shading and display function, and provides more information for the passengers. At present, most of information of a vehicle needs to enter the vehicle to be checked through a central control panel or an instrument panel, or the information is checked through a mobile phone APP connected with a mobile phone, so that great trouble is increased for a vehicle passenger to acquire the vehicle information. Along with the continuous promotion of passenger to security and additional information demand, the demand that the door window needs integrated display function and shading privacy protection function is outstanding more, solves the single problem of original door window function.

Disclosure of utility model

In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a display device, a vehicle window display device and a control system thereof, solve the problem of privacy protection of passengers in a vehicle, and realize that the transparent state and the privacy state of the vehicle window can be mutually switched and the information of the vehicle window can be displayed in color.

The aim of the utility model is achieved by the following technical scheme:

The display device comprises an upper substrate, a lower substrate and a liquid crystal layer, wherein the liquid crystal layer is clamped between the upper substrate and the lower substrate, a common electrode and a pixel electrode are respectively arranged on the inner side surfaces of the upper substrate and the lower substrate, and the display device is characterized in that the liquid crystal layer is a polymer network layer formed by adding polymers into positive nematic liquid crystal molecules, the display device further comprises an LED light source and a TFT unit, the LED light source is arranged on the side edges of the upper substrate and the lower substrate, the TFT unit is arranged on the lower substrate, and the TFT unit is electrically connected with the pixel electrode.

In an embodiment, the LED light source is a white LED, the display device further includes a plurality of pixel units disposed on the upper substrate, each of the pixel units includes a plurality of sub-pixel units, and at least includes a red sub-pixel unit, a green sub-pixel unit, and a blue sub-pixel unit, where the sub-pixel units are in one-to-one correspondence with the TFT units.

In an embodiment, the LED light source is a red, green and blue LED, and the display device further includes a plurality of sub-pixel units disposed on the upper substrate, where the sub-pixel units are transparent sub-pixel units.

In one embodiment, a black matrix is disposed between adjacent sub-pixel units.

In an embodiment, the display device further includes a support disposed between the common electrode and the pixel electrode.

In one embodiment, the display device is provided with a display area; the display area comprises a contrast area and an information area, and when the display area displays related information, liquid crystal layers in the contrast area and the information area respectively show a fog state and a transparent state so as to display the related information in the information area.

The utility model also provides a vehicle window display device, which comprises a vehicle window glass, wherein the vehicle window glass comprises a vehicle window outer layer, a vehicle window inner layer and the display device, and the display device is clamped between the vehicle window outer layer and the vehicle window inner layer.

In an embodiment, the window display device further includes a window glass outer frame, a window side reinforcing unit, and a window lower structural unit disposed on the periphery of the window glass, and the display device has the same size as the window glass outer frame.

In an embodiment, the window display device further comprises a window control unit, wherein the window control unit is arranged in the window lower structural unit, and the window control unit is electrically connected with the TFT unit and the LED light source; the LED light source is an LED light bar, and the LED light bar is arranged in the vehicle window side edge reinforcing unit.

The utility model also provides a control system for controlling the vehicle window display device, which comprises a TCAM module, a network module, a display main control unit, a central electronic module and a vehicle window control unit, wherein the TCAM module, the network module, the central electronic module and the vehicle window control unit are electrically connected with the display main control unit, and the central electronic module is electrically connected with the vehicle window control unit.

The utility model has the beneficial effects that: the polymer network layer formed by adding the polymer into the positive nematic liquid crystal molecules is arranged between the upper substrate and the lower substrate, so that when no voltage is applied between the common electrode and the pixel electrode, the liquid crystal molecules in the polymer network layer are in a scattered state, the refractive index difference between the liquid crystal in the polarization direction of incident light and the refractive index of the polymer is large, and light is refracted at the junction of the liquid crystal and the polymer, and is in a scattering state, namely in a fog state, so that the privacy protection effect on passengers in a vehicle is achieved; when the common electrode and the pixel electrode are electrified, the refractive index of the liquid crystal in the polarization direction of the incident light is equivalent to that of the polymer, the liquid crystal molecules are erected to present a transparent state, passengers can see the outside scenery, and meanwhile, the related information displayed on the vehicle window can be checked, so that the vehicle window is more convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a structure of a display device of an embodiment of the present utility model when powered on;

FIG. 2 is a schematic illustration of FIG. 1 when not energized;

FIG. 3 is a schematic diagram of the front view of a vehicle window according to an embodiment of the utility model;

FIG. 4a is a schematic diagram of a display area according to an embodiment of the present utility model;

FIG. 4b is a schematic diagram of a display area according to another embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a vehicle window according to an embodiment of the utility model;

fig. 6 is a schematic view of a structure of a display device according to another embodiment of the present utility model when power is applied;

FIG. 7 is a schematic diagram of the front view of a vehicle window according to another embodiment of the utility model;

Fig. 8 is a schematic diagram of the window display control logic of the present utility model.

In the figure: 1-display device, 11-upper substrate, 111-common electrode, 12-lower substrate, 121-pixel electrode, 122-TFT unit, 13-liquid crystal layer, 131-liquid crystal molecule, 132-polymer, 14-LED light source, 141-white LED,142-RLED, 143-pled, 144-ble, 15-frame glue, 16-pixel unit, 161-red sub-pixel unit, 162-green sub-pixel unit, 163-blue sub-pixel unit, 164-transparent sub-pixel unit, 17-black matrix, 18-support, 19-display area, 191-contrast area, 192-information area, 2-window glass, 21-window outer layer, 22-window inner layer, 23-PVB interlayer, 24-hollow layer, 25-window glass outer frame, 26-window side reinforcement unit, 27-window lower structural unit, 28-control unit, 281-FPC, 282-display drive IC, 283-drive circuit board, 284-power module, 285-LED light source drive IC, 286-connection, 31-window master control module 32-master control module 33-network module, 33-central network module.

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms described above will be understood to those of ordinary skill in the art in a specific context.

The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," and the like are used as references to orientations or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the inventive product is conventionally disposed in use, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore are not to be construed as limiting the utility model.

The terms "first," "second," "third," and the like, are merely used for distinguishing between similar elements and not necessarily for indicating or implying a relative importance or order.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements does not include only those elements but may include other elements not expressly listed.

The utility model provides a display device, as shown in fig. 1, comprising an upper substrate 11, a lower substrate 12 and a liquid crystal layer 13, wherein the liquid crystal layer 13 is arranged between the upper substrate 11 and the lower substrate 12, the inner side surfaces of the upper substrate 11 and the lower substrate 12 are respectively provided with a common electrode 111 and a pixel electrode 121, and the liquid crystal layer 13 is a polymer network layer formed by adding a polymer 132 into positive nematic liquid crystal molecules 131. The display device 1 further includes an LED light source 14 and a TFT unit 122, and the LED light source 14 is disposed at the sides of the upper and lower substrates 11 and 12, that is, the side-in LED light source 14 is used. The TFT unit 122 is disposed on the lower substrate 12, the TFT unit 122 is electrically connected to the pixel electrode 121, and the TFT unit 122 is used as an active display of a pixel switch. According to the utility model, the polymer network layer formed by adding the polymer 132 into the positive nematic liquid crystal molecules 131 is arranged between the upper substrate 11 and the lower substrate 12, so that when no voltage is applied between the public electrode 111 and the pixel electrode 121, the liquid crystal molecules 131 in the polymer network layer are in a scattered state, the refractive index difference between the refractive index of the liquid crystal molecules 131 in the polarization direction of incident light and the refractive index of the polymer 132 is large, and light is refracted at the junction of the liquid crystal molecules 131 and the polymer 132, and is in a scattering state at the moment, namely in a fog state (privacy state), so that the privacy protection effect on passengers in a vehicle is achieved; when the pressure is applied between the common electrode 111 and the pixel electrode 121, the refractive index of the liquid crystal molecules 131 in the polarization direction of the incident light is equal to that of the polymer 132, the liquid crystal molecules 131 stand up to present a transparent state, and passengers can see the outside scenery and can simultaneously view the related information displayed on the vehicle window, such as time and weather information, which is more convenient.

In the present embodiment, the upper and lower substrates 11, 12 may be selected from glass or plastic. For example, the upper substrate 11 and the lower substrate 12 are both glass; or the upper substrate 11 and the lower substrate 12 are both made of plastic; or one of the upper and lower substrates 11 and 12 is plastic and the other is glass. The plastic may be selected to be flexible PET (polyethylene terephthalate) or transparent PI (CPI) polyimide. The common electrode 111 and the pixel electrode 121 may be transparent ITO indium tin oxide layers, and auxiliary metal electrodes such as silver, copper, or aluminum may be used as needed. The edges of the upper substrate 11, the liquid crystal layer 13 and the lower substrate 12 are bonded by a frame sealing adhesive 15. Wherein, a small amount of polymer 132 is added in the nematic liquid crystal molecule 131 of the liquid crystal layer 13, the content of the polymer 132 is relatively low, and a small amount of polymer 132 is dispersed in the liquid crystal molecule 131 to play a role of bracket and stabilization. The driving voltage of the polymer network liquid crystal is low and is 5-8V, which is suitable for active display and can be produced by completely utilizing a TFT LCD production line. The polymer 132 and the liquid crystal molecule 131 form a network layer after UV polymerization, the liquid crystal molecule 131 exists in the network, the refractive index of the liquid crystal molecule 131 is ne (along the optical axis direction) and no (perpendicular to the optical axis direction), and the refractive index of the polymer 132 is np. The optical principle is that when the common electrode 111 and the pixel electrode 121 are not electrified, as shown in fig. 2, the liquid crystal molecules 131 in the polymer 132 network are in a scattered state, the refractive index ne of the liquid crystal molecules 131 in the polarization direction of the incident light is greatly different from the refractive index np of the polymer 132, and the light is refracted at the junction of the liquid crystal molecules 131 and the polymer 132, and is in a scattering state at the moment, namely in a fog state, so that the privacy protection effect on passengers in the vehicle is achieved; when the current is supplied between the common electrode 111 and the pixel electrode 121, as shown in fig. 1, the refractive index no of the liquid crystal molecules 131 in the polarization direction of the incident light is equal to the refractive index np of the polymer 132, the liquid crystal stands up, and a transparent state is displayed, so that the passengers can see the outside scenery, and at the same time, the information displayed on the window, such as time and weather information, can be seen.

As an embodiment, as shown in fig. 1 to 3, the LED light source 14 is a white LED141, and the display device 1 further includes a plurality of pixel units 16 disposed on the upper substrate 11, where each pixel unit 16 includes a plurality of sub-pixel units, and at least includes a red sub-pixel unit 161, a green sub-pixel unit 162, and a blue sub-pixel unit 163, and the sub-pixel units are in one-to-one correspondence with the TFT units 122. In the present embodiment, color display is realized by the color filters, that is, the red subpixel unit 161, the green subpixel unit 162, and the blue subpixel unit 163; the LED light source 14 uses a 60Hz white LED141.

As an embodiment, as shown in fig. 6 and 7, the LED light source 14 is a red, green and blue LED, and the display device 1 further includes a plurality of sub-pixel units disposed on the upper substrate 11, and the sub-pixel unit 161 is a transparent sub-pixel unit 164. The implementation form of the embodiment is that the black-and-white display device 1 is used, the side-in type LED light source 14 uses R, G, B three-color LEDs, the sub-pixel units are made of transparent materials, a red-green-blue color filter is not used, and the side-in type LED light source 14 comprises an R LED142, a G LED143 and a B LED144. The display device 1 is driven at 60Hz, the side-in three-color LEDs are driven at 180Hz, and the R LEDs 142, G LEDs 143, and B LEDs 144 are driven at 60Hz in time sequence.

As an embodiment, as shown in fig. 1 and 6, a black matrix 17 is disposed between adjacent sub-pixel units 161 to separate color layers and enhance color contrast.

As an embodiment, as shown in fig. 1, the display device 1 further includes a support 18, and the support 18 is disposed between the common electrode 111 and the pixel electrode 121. The support 18 may be a spherical support or a columnar support, and the distance between the common electrode 111 and the pixel electrode 121 may be 5 μm to 10 μm, which is the thickness of the liquid crystal cell, without an alignment film.

As an embodiment, as shown in fig. 3, the display device 1 is provided with a display area 19 for displaying related information; the display area 19 includes a contrast area 191 and an information area 192, and when the display area 19 displays the related information, the liquid crystal layers 13 in the contrast area 191 and the information area 192 respectively take on a fog state and a transparent state to display the related information in the information area 192. Specifically, when no electricity is supplied between the common electrode 111 and the pixel electrode 121, the liquid crystal layer 13 is in a fog state, which plays a role in protecting the privacy of passengers; when the common electrode 111 and the pixel electrode 121 are energized, the information area 192 in the display area 19 is in a transparent state, the contrast area 191 is in a fog state, and the information area 192 and the contrast area 191 form contrast so as to clearly display relevant information such as patterns and/or characters in the information area 192. When energized, the display area 19 has the TFT unit 122 controlling the pixel electrode 121, so that the portion displaying the font and the image is transparent and colored, and the contrast area 191 inside the display area 19 is in a fog state; the liquid crystal layer 13 outside the display area 19 is transparent, and passengers can see outside scenery through the area outside the display area 19; the display area 19 is large enough, so that information is displayed clearly and is convenient for passengers to check. As shown in fig. 3, the display area 19 may be square; as shown in fig. 4a, the display area 19 may also be hexagonal; alternatively, as shown in fig. 4b, the display area 19 may be circular. When not electrified, the whole liquid crystal layer 13 presents a fog state, and plays a role in protecting the privacy of passengers; when energized, the display area 19 can display relevant time and weather information, and the position outside the display area 19 is transparent, so that passengers can see scenery outside the window at the same time.

The utility model also provides a vehicle window display device, as shown in fig. 5, which comprises a vehicle window glass 2, wherein the vehicle window glass 2 comprises a vehicle window outer layer 21, a vehicle window inner layer 22 and the display device 1, and the display device 1 is clamped between the vehicle window outer layer 21 and the vehicle window inner layer 22. The window glass 2 further comprises a PVB interlayer 23 and a hollow layer 24, the PVB interlayer 23 is arranged between the window inner layer 22 and the display device 1, and the hollow layer 24 is arranged between the window outer layer 21 and the display device 1.

As an embodiment, as shown in fig. 3, the window display device further includes a window glass outer frame 25, a window side edge reinforcing unit 26 and a window lower structural unit 27, which are disposed on the periphery of the window glass 2, and the display device 1 has the same size as the window glass outer frame 25, so that the liquid crystal layer 13 can cover the whole window glass 2, and the whole window is in a fog state, namely a privacy state when not energized, so as to protect the privacy function of passengers; when the power is on, the transparent display of the interlayer can realize color display, display time and weather information, so that passengers do not need to watch a front row control screen, and know time and outside weather conditions without watching a mobile phone, thereby being more convenient.

In this embodiment, as shown in fig. 3, the window display device may be applied to a side window, so as to protect the privacy of the rear passengers and facilitate the rear passengers to view related information; of course, the window display device can also be applied to a skylight or a rear window position, and when the window display device is applied to the skylight position, a passenger can look at related information or view sky scenery when the passenger is in a tilting and lying state, so that the interestingness of the passenger riding the vehicle is improved; when the display device is applied to the rear window position, related information such as advertisement information can be displayed at the rear window position, so that the display device is convenient for outside personnel to watch and has certain economic value. Especially when the temperature is higher in summer, the side window, the skylight and the rear window can all be in a fog state, so that the effect of shielding sunlight is achieved, the privacy of passengers can be protected, the functions of sun-shading, cooling and ultraviolet ray prevention can be achieved, and passengers can obtain more comfortable riding experience.

As an embodiment, as shown in fig. 3, the window display device further includes a window control unit 28, where the window control unit 28 is disposed in the window lower structure unit 27, and the window control unit 28 is electrically connected with the TFT unit 122 and the LED light source 14 to control the LED light source 14 to emit light and to energize the common electrode 111 and the pixel electrode 121, so as to implement the mutual switching between the transparent state and the privacy state of the window and the color display of the window information. The window control unit 28 includes an FPC281, a display driving IC282, a driving circuit board 283, a power module 284, and an LED light source driving IC285 of the display device 1, and the window control unit 28 and the LED light source 14 are connected by a connection line 286. As shown in fig. 3 and 7, the LED light source 14 is an LED light bar, and the LED light bar is disposed in the window side reinforcement unit 26.

The utility model also provides a control system for controlling the vehicle window display device, as shown in fig. 8, which comprises a TCAM module 31, a network module 32, a display main control unit 33, a central electronic module 34 and a vehicle window control unit 28, wherein the TCAM module 31, the network module 32, the central electronic module 34 and the vehicle window control unit 28 are all electrically connected with the display main control unit 33, and the central electronic module 34 is electrically connected with the vehicle window control unit 28. The time information acquired by the TCAM through the GPS or the network is sent to the display master control unit 33 (automobile DHU) through the ethernet, the DHU sends the time to the central electronic module 34 (CEM) through Flexry or the like, the CEM synchronizes the time of the crystal oscillator to the time sent by the DHU, and in order to ensure the time accuracy, the central electronic module 34 can also pair with the DHU reversely. The central electronics module 34 then sends the time to the window control unit 28 for display in the display area 19. Weather information may be obtained from the network, transmitted to the DHU via ethernet, and then synchronized to the window control unit 28 for display in the display area 19.

The beneficial effects of the utility model are as follows:

1) The invention uses the display device 1 of the liquid crystal, namely PNLC liquid crystal display as the display medium, its liquid crystal is polymer network liquid crystal PNLC material, its external substrate can be glass, can be PET, can also be colorless PI, namely CPI material;

2) The light source system shown in the invention uses a side-in LED light source 14 buried in the side surface of the vehicle window display device, and the LED light source 14 uses a 60Hz white light LED141;

3) The whole display device 1 is laminated between two layers of glass of the car window, and one side of the whole display device is attached to the PVB interlayer 23 of the interlayer, so that the display device 1 can be attached to the main body of the car window display device more tightly, and the overall stability of the device is improved;

4) The display area 19 can be a square area in the middle of the window glass 2, a hexagonal area, a round area and various designs, so that the aesthetic property is improved;

5) The window control unit 28 and related connecting wires of the display device 1 are hidden in the window lower structural unit 27, and the layout of each component is compact and reasonable;

6) The time displayed in the display area 19 can be timed by a time-timing mechanism, and the weather and the temperature can be synchronized with the network weather, so that the accuracy of the displayed information data is improved.

The present utility model is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (10)

1. The utility model provides a display device, includes upper substrate (11), lower base plate (12) and liquid crystal layer (13), liquid crystal layer (13) clamp is located upper substrate (11) with between lower base plate (12), upper substrate (11) with be equipped with public electrode (111) and pixel electrode (121) on the medial surface of lower base plate (12) respectively, a serial communication port, liquid crystal layer (13) are polymer network layer that polymer (132) added to positive nematic liquid crystal molecule (131) and form, display device (1) still include LED light source (14) and TFT unit (122), LED light source (14) set up in upper substrate (11) with the side of lower base plate (12), TFT unit (122) set up in on lower base plate (12), TFT unit (122) with pixel electrode (121) electricity is connected.

2. The display device according to claim 1, wherein the LED light source (14) is a white LED (141), the display device (1) further comprises a plurality of pixel units (16) disposed on the upper substrate (11), each pixel unit (16) comprises a plurality of sub-pixel units, at least comprising a red sub-pixel unit (161), a green sub-pixel unit (162) and a blue sub-pixel unit (163), and the sub-pixel units are in one-to-one correspondence with the TFT units (122).

3. The display device according to claim 1, wherein the LED light source (14) is a red, green and blue LED, the display device (1) further comprising a plurality of sub-pixel units arranged on the upper substrate (11), the sub-pixel units being transparent sub-pixel units (164).

4. A display device as claimed in claim 2 or 3, characterized in that a black matrix (17) is arranged between adjacent sub-pixel elements.

5. A display device as claimed in claim 1, characterized in that the display device (1) further comprises a support (18), the support (18) being arranged between the common electrode (111) and the pixel electrode (121).

6. A display device as claimed in claim 1, characterized in that the display device (1) is provided with a display area (19); the display area (19) comprises a contrast area (191) and an information area (192), and when the display area (19) displays related information, the liquid crystal layers (13) in the contrast area (191) and the information area (192) respectively present a fog state and a transparent state so as to display the related information in the information area (192).

7. A vehicle window display device, characterized by comprising a vehicle window glass (2), wherein the vehicle window glass (2) comprises a vehicle window outer layer (21), a vehicle window inner layer (22) and a display device (1) according to any one of claims 1-6, and the display device (1) is clamped between the vehicle window outer layer (21) and the vehicle window inner layer (22).

8. The window display device according to claim 7, further comprising a window glass outer frame (25), a window side reinforcement unit (26), and a window lower structure unit (27) provided on an outer periphery of the window glass (2), wherein the display element (1) has the same size as the window glass outer frame (25).

9. The window display device according to claim 8, further comprising a window control unit (28), the window control unit (28) being disposed within the window lower structural unit (27), the window control unit (28) being electrically connected to the TFT unit (122) and the LED light source (14); the LED light source (14) is an LED light bar, and the LED light bar is arranged in the vehicle window side edge reinforcing unit (26).

10. The control system is characterized by comprising a TCAM (ternary content addressable memory) module (31), a network module (32), a display main control unit (33), a central electronic module (34) and a window control unit (28), wherein the TCAM module (31), the network module (32), the central electronic module (34) and the window control unit (28) are electrically connected with the display main control unit (33), and the central electronic module (34) is electrically connected with the window control unit (28).