WO2017067393A1 - 车载液晶显示装置和制造方法以及车辆 - Google Patents

车载液晶显示装置和制造方法以及车辆 Download PDF

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Publication number
WO2017067393A1
WO2017067393A1 PCT/CN2016/101648 CN2016101648W WO2017067393A1 WO 2017067393 A1 WO2017067393 A1 WO 2017067393A1 CN 2016101648 W CN2016101648 W CN 2016101648W WO 2017067393 A1 WO2017067393 A1 WO 2017067393A1
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Prior art keywords
liquid crystal
vehicle
display device
crystal display
backlight
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Application number
PCT/CN2016/101648
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English (en)
French (fr)
Inventor
武乃福
魏伟
吴坤
王涛
牛贝
Original Assignee
京东方科技集团股份有限公司
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Priority to US15/528,428 priority Critical patent/US20170336678A1/en
Publication of WO2017067393A1 publication Critical patent/WO2017067393A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/29—Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/18—Information management
    • B60K2360/186—Displaying information according to relevancy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/18—Information management
    • B60K2360/188—Displaying information using colour changes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/25—Optical features of instruments using filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/331—Electroluminescent elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/34—Backlit symbols
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133626—Illuminating devices providing two modes of illumination, e.g. day-night
    • G02F1/133627—Projection-direct viewing

Definitions

  • the present invention relates to the field of in-vehicle display, and in particular to an in-vehicle liquid crystal display device and a method of manufacturing the in-vehicle liquid crystal display device, and a vehicle including the in-vehicle liquid crystal display device.
  • a head-up display technology that is, a device that can read the driving information in a head-up manner, is introduced.
  • the on-board display technology is based on projection, and requires high contrast to perform human eye recognition reading in clear weather. Therefore, a backlight with high brightness is required.
  • the problem is that the increase in backlight brightness causes a large concentration of temperature, and the temperature is too high. It will affect the display effect and stability of the device. For this reason, the usual method is to increase the bulky and large heat sink, which will occupy the inherently small interior space.
  • an object of the present invention is to provide an in-vehicle liquid crystal display device, a method of manufacturing the on-vehicle liquid crystal display device, and a vehicle, which can at least overcome some of the problems or disadvantages in the prior art.
  • an in-vehicle liquid crystal display device including at least one backlight source and a liquid crystal panel, and the liquid crystal panel does not include a color film layer.
  • a method of manufacturing a vehicle-mounted liquid crystal display device includes: forming at least one backlight source; and forming a liquid crystal panel, wherein the liquid crystal panel does not include a color film layer.
  • a vehicle including the above-described vehicle-mounted liquid crystal display device is provided.
  • the vehicle-mounted liquid crystal display device comprises a backlight source and a liquid crystal panel, and the liquid crystal panel does not include a color film layer.
  • the on-vehicle liquid crystal display device can display information clearly without generating excessive heat, can display images efficiently, and at the same time ensure sufficient brightness, the power is small, and the corresponding manufacturing process is simplified.
  • FIG. 1 is an exploded perspective view showing an in-vehicle liquid crystal display device according to an embodiment of the present invention
  • FIG. 2 illustrates a shading element of a vehicle-mounted liquid crystal display device in accordance with an embodiment of the present invention
  • FIG. 3 shows a display example of an in-vehicle liquid crystal display device and an arrangement of a backlight source according to an embodiment of the present invention
  • FIG. 4 shows a display example of an in-vehicle liquid crystal display device and an arrangement of a backlight source according to an embodiment of the present invention
  • FIG. 5 shows a display example of an in-vehicle liquid crystal display device and an arrangement of a backlight source according to an embodiment of the present invention.
  • an in-vehicle liquid crystal display device may include a backlight source 10 and a liquid crystal panel 20.
  • a conventional liquid crystal display panel or liquid crystal display includes a color film layer, however, according to an embodiment of the present invention, the vehicle-mounted liquid crystal display device or the liquid crystal panel does not include a color film layer. Since the color film layer is eliminated, the transmittance of the liquid crystal panel is improved. For example, in one embodiment, the liquid transmittance of the liquid crystal display panel reaches 15% or higher because there is no color film layer. Such a liquid crystal display panel can greatly reduce the backlight requirements while satisfying the required display definition.
  • an in-vehicle liquid crystal display device includes a backlight source and a liquid crystal panel.
  • the on-vehicle liquid crystal display device may include the first polarizer 201, the thin film transistor array 203, the liquid crystal layer 204, and the second polarizer 202 as shown in FIG. 1, wherein the color filter layer is indispensable in the existing liquid crystal panel. It is not provided in the on-vehicle liquid crystal display device in the embodiment of the present invention. As shown in FIG.
  • the light of the backlight source starts from the backlight source 10
  • the liquid crystal panel without the color film can actually display clear information, and thus, the liquid crystal display device according to the embodiment of the present invention can clearly display information and reduce backlight brightness. Reduce heat and power.
  • the vehicle-mounted liquid crystal display device includes a display area, and the backlight source thereof may include, for example, a red backlight source, or a green backlight source, or a blue backlight source, or a white backlight source, and may also include two or two More than one backlight source.
  • the on-vehicle liquid crystal display device includes at least two display areas, for example, two display areas W, R, each of which is for independently displaying corresponding information.
  • a display area W of the in-vehicle liquid crystal display device displays the speed of the vehicle, the engine speed, the water temperature, the cruising range, the fuel consumption, and the like in a digital form, and may also display the speed of the vehicle, the engine speed, and the like in the form of a speed pointer.
  • Another display area G of the in-vehicle liquid crystal display device displays navigation information such as a front turn indication or the like.
  • Further display area R of the in-vehicle liquid crystal display device displays warning information such as a speed limit, a photographing warning, and the like.
  • the on-board liquid crystal display device can also include more display areas, which can be set as needed.
  • the vehicle-mounted liquid crystal display device can adopt a color backlight source, for example, one or at least two display areas adopt a color backlight source, such as a white backlight source, a blue backlight source or a green backlight source, or other backlight sources.
  • a color backlight source such as a white backlight source, a blue backlight source or a green backlight source, or other backlight sources.
  • the backlight sources of these display areas are of the same color, however, each display area can work separately, including each display area can have its own display brightness, can be independently turned on, off, and can be independently flashed ( That is, it is turned off and displayed periodically.
  • the on-vehicle liquid crystal display device may employ a plurality of color backlight sources each operating separately.
  • each display area includes a separately operating backlight source.
  • each display area comprises a separately operated backlight source of one color, and the backlight source of each display area can operate independently, including brightness, off and on, and blinking (ie, periodically turning off) And display) and other operations.
  • the backlight source of each display area may adopt a color, that is, different display areas have backlight sources of different colors.
  • the display area W using a white backlight source displays the speed of the vehicle, the engine speed, the water temperature, the cruising range, the fuel consumption, etc., as shown in FIG. 3;
  • the display area G including the green backlight source displays prompt information, such as navigation information, such as the front.
  • a turn indication or the like is as shown in FIG. 3;
  • a display area R including a red backlight source displays warning information such as a speed limit, a photographing warning, and the like.
  • Other colors may be used for display, and the present invention is not limited to the above embodiments.
  • the on-vehicle liquid crystal display device of the embodiment of the present invention can clearly display the required information while the power and the amount of heat generation are controlled within a reasonable range.
  • a light shielding member 30 is disposed between different display regions of the vehicle-mounted liquid crystal display device to separate backlights of different display regions.
  • the shading element 30 is advantageous, for example, when the colors of the backlight sources (e.g., LEDs 110) of different display areas are different, different colors of light are separated by the shading elements 30, thereby preventing light of different colors from interfering with each other.
  • the vehicle-mounted liquid crystal display device according to the embodiment of the present invention can also be normally displayed without providing a light shielding member.
  • a light blocking element 30 may also be provided between display areas of the same color.
  • At least one display area of the on-vehicle liquid crystal display device includes at least one mixed color backlight display area M.
  • at least one display area of the on-vehicle liquid crystal display device includes a mixed color backlight display area M, and the mixed color backlight display The area includes a backlight source of at least two colors, and a backlight source of at least two colors is mixedly arranged as shown in FIG.
  • the mixed color backlight display area M includes a plurality of LEDs, and the plurality of LEDs may include adjacently disposed green LEDs 101g and red LEDs 101r, that is, each green LED 101g is disposed adjacent to a red LED. 101r, each red LED 101r is adjacent to a green LED 101g.
  • the green LED 101g and The intensity of the LED array formed by the red LED 101r is the same as that of the LEDs in the backlight of other display areas. In other words, it can be seen that some of the green LEDs 101g can be replaced with the red LEDs 101r to form a mixed backlight. light source.
  • the green LED 101g and the red LED 101r are alternately arranged, and the red LED 101r and the green LED 101g are substantially adjacent to each other. Arrangement, the arrangement of the LEDs in the mixed-color backlight display area of FIG. 5 significantly increases the density of the LEDs, thereby improving display brightness and sharpness.
  • the LEDs of the backlight source may also be arranged in other ways.
  • the mixed color backlight display area M may comprise a hybrid arrangement of LEDs of the other two colors.
  • the color-mixed backlight display area M may comprise a hybrid arrangement of LEDs of other three or four colors.
  • the color mixed backlight display area M may be alternately blinkingly displayed.
  • a red LED backlight source including a plurality of LEDs 101r
  • a green LED backlight source including a plurality of LEDs 101g
  • the mixed-color backlight display region alternately blinks to display a red image and a green image.
  • the image displayed by the light emitted by the red LED and the image displayed by the light emitted by the green LED may be the same image or different images.
  • the color-mixing backlight display area M may alternately display images using two other colors different from red and green.
  • the mixed-color backlight display area M may be alternately displayed in an order of images of other three or more colors.
  • the backlight source of the color mixed backlight display area M includes, for example, a red LED, a green LED, and a blue LED, which are sequentially illuminated as needed to display images of different colors. The effect of the flashing display is obvious, and the driver of the vehicle is easily noticed by the flickering image.
  • the backlight sources of all colors in the mixed-color backlight display area M are simultaneously illuminated.
  • the mixed-color backlight display area includes a red LED and a green LED, and the red LED and the green LED can simultaneously emit light, thereby displaying an orange image after color mixing.
  • the color-mixing backlight display area M may display images of different colors without alternately blinking, and display only images of one color for a period of time, such as displaying only a red image, or displaying only a green image, or only displaying Blue image, etc.
  • the display area may include at least one mixed color backlight display area M.
  • Each of the color-mixed backlight display areas M may include a backlight LED array of two or more colors.
  • Each of the color-mixing backlight display areas M can display only one color image for a certain period of time. In other words, the color-mixing backlight display area M can display information such as images or symbols like a monochrome backlight display area.
  • a vehicle including the above-described vehicle-mounted liquid crystal display device is provided.
  • a method of fabricating a vehicle-mounted liquid crystal display device includes forming a backlight source 10, and forming a liquid crystal panel 20, wherein the liquid crystal panel 20 does not include a color filter layer.
  • the step of forming a backlight source includes forming at least one partition in a region in which the backlight source is formed, each partition arranging a backlight source of a particular color.
  • the backlight source can be an LED light source 101.
  • the method of manufacturing further includes disposing a shading element 30 between different sections.
  • the step of forming a backlight source includes arranging at least two colors of backlight sources in at least one of the partitions, the at least two colors of backlight sources being spaced apart or contiguous with each other, and each backlight source and adjacent backlight The color of the light source is different, and the partition is the aforementioned mixed color backlight display area M.
  • the partition is the aforementioned mixed color backlight display area M.
  • at least two LEDs of different colors are alternately arranged in the mixed color backlight display region M.
  • the red LED 101r and the green LED 101g are alternately arranged in the mixed color backlight display region M.
  • the step of forming a backlight source includes forming at least one mixed color backlight display region M in which light emitting diodes of at least two colors are disposed.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Instrument Panels (AREA)

Abstract

一种车载液晶显示装置及其制造方法和包括车载液晶显示装置的车辆。车载液晶显示装置，包括至少一个背光光源（10）和液晶面板（20），并且液晶面板（20）不包括彩膜层。该车载液晶显示装置发热小，亮度高，并且能够清楚地显示。

Description

车载液晶显示装置和制造方法以及车辆 技术领域
本发明涉及车载显示领域，具体地，涉及车载液晶显示装置和制造车载液晶显示装置的方法以及包括车载液晶显示装置的车辆。
背景技术
在目前的车载显示技术领域，为了增加驾驶者的安全性，引入了抬头显示技术，即一种可以平视的读取行车信息的装置。
但是车载显示技术基于投影，需要很高的对比度才能在晴朗天气下进行人眼识别读取，所以需要亮度很高的背光，问题是背光亮度的提升就会造成温度的大量集聚，温度过高就会影响器件的显示效果及稳定性，为此通常的做法是增加体积较为笨重庞大的散热装置，就会占用本来就较为狭小的车内空间。
需要一种车载显示装置，不使用太强的背光也能够保证良好的显示效果。现有的基于液晶显示的抬头显示装置，由于液晶面板本身的透过率低(大约4％)，为了显示清楚，因而背光亮度要求很高(～65万nit的亮度)，而这种高亮度将带来发热高，甚至显示装置由于温度过高而无法正常工作。因而，需要一种既能够清楚地显示信息又不会产生过多热量的显示装置。
发明内容
鉴于此，本发明的目的在于提供一种车载液晶显示装置和制造车载液晶显示装置的方法以及车辆，可以至少克服现有技术中的部分问题或缺点。
根据本发明一方面，提供一种车载液晶显示装置，包括至少一个背光光源和液晶面板，并且液晶面板不包括彩膜层。
根据本发明另一方面，提供一种车载液晶显示装置的制造方法，包括：形成至少一个背光光源；和形成液晶面板，其中液晶面板不包括彩膜层。
根据本发明另一方面，提供一种车辆，包括上述的车载液晶显示装置。
本发明提供的车载液晶显示装置，包括背光光源和液晶面板，所述液晶面板不包括彩膜层。该车载液晶显示装置既能够清楚地显示信息又不会产生过多热量，能够高效显示画面，同时保证足够的亮度，其功率小，且相应的制作工艺简化。
附图说明
图1示出根据本发明的一个实施例的车载液晶显示装置的分解示意图；
图2示出根据本发明的一个实施例的车载液晶显示装置的遮光元件；
图3示出根据本发明的一个实施例的车载液晶显示装置的显示示例和背光光源的布置；
图4示出根据本发明的一个实施例的车载液晶显示装置的显示示例和背光光源的布置；
图5示出根据本发明的一个实施例的车载液晶显示装置的显示示例和背光光源的布置。
具体实施方式
现在对本发明的实施例提供详细参考，其范例在附图中说明，图中相同的数字全部代表相同的元件。为解释本发明下述实施例将参考附图被描述。
根据本发明的一个实施例，提供一种车载液晶显示装置。如图1所示，该车载液晶显示装置可包括背光光源10和液晶面板20。现有的液晶显示面板或液晶显示器包括彩膜层，然而根据本发明的实施例，车载液晶显示装置或液晶面板不包括彩膜层。由于取消了彩膜层，液晶面板的透过率得以提高。例如，在一个实施例中，由于没有彩膜层，液晶显示面板的光透过率达到15％甚至更高。这样的液晶显示面板，在满足需要的显示清晰度的情况下，对背光的要求可以大大降低。
根据本发明的一个实施例，车载液晶显示装置包括背光光源和液晶面板。 具体地，车载液晶显示装置可以包括如图1所示的第一偏光片201、薄膜晶体管阵列203、液晶层204以及第二偏光片202，其中现有的液晶面板中必不可少的彩膜层在本发明的实施例中的车载液晶显示装置中没有设置。如图1所示，背光光源的光从背光光源10出发，经过第一偏光片201、薄膜晶体管阵列203、液晶层204以及第二偏光片202，最后出射的光强度不断减小。由于取消了彩膜层，因而本发明的实施例的车载液晶显示装置在使用相同的背光光源的情况下最终出射的光的强度比设置彩膜层的现有的液晶显示装置高。
考虑到车载液晶显示装置的显示要求，没有彩膜的液晶面板实际上也能够显示清楚的信息，因而，根据本发明的实施例的液晶显示装置既能够清楚地显示信息，又能够降低背光亮度，降低发热和功率。
根据本发明的一个实施例，车载液晶显示装置包括一个显示区域，其背光光源例如可以包括红色背光光源，或绿色背光光源，或蓝色背光光源，或白色背光光源，也可以包括两种或两种以上的背光光源。
根据本发明的一个实施例，车载液晶显示装置包括至少两个显示区域，例如两个显示区域W、R，每个显示区域用于独立地显示相应的信息。例如，车载液晶显示装置的一个显示区域W以数字的形式显示车辆的速度、发动机转速、水温、续航里程、油耗等，也可以以转速指针的形式显示车辆的速度和发动机转速等。车载液晶显示装置的另一显示区域G显示导航信息，例如前方拐弯指示等。车载液晶显示装置的还一显示区域R显示警告信息，例如限速、拍照警告等信息。车载液晶显示装置还可以包括更多的显示区域，可以根据需要进行设置。
车载液晶显示装置可以采用一种颜色的背光光源，例如一个或至少两个显示区域采用一种颜色的背光光源，例如白色背光光源、蓝色背光光源或绿色背光光源，或其他背光光源。换句话说，这些显示区域的背光光源是同一种颜色，然而，每个显示区域可以单独地工作，包括每个显示区域可以具有各自的显示亮度，可以独立地打开、关闭，可以独立地闪烁(即周期地关闭和显示)。
在本发明的另一个实施例中，车载液晶显示装置可以采用各自单独工作的多种颜色背光光源。例如每个显示区域包括一种单独工作的背光光源。在本发明的一个实施例中，例如每个显示区域包括一种颜色的单独工作的背光光源，每个显示区域的背光光源可以独立地工作，包括亮度、关闭和打开以及闪烁(即周期地关闭和显示)等操作。在本发明的一个实施例中，每个显示区域的背光光源可以采用一种颜色，即，不同的显示区域具有不同颜色的背光光源。例如，采用白色背光光源的显示区域W显示车辆的速度、发动机转速、水温、续航里程、油耗等，如图3所示；包括绿色背光光源的显示区域G显示提示信息，例如导航信息，例如前方拐弯指示等，如图3所示；包括红色背光光源的显示区域R显示警告信息，例如限速、拍照警告等信息。可以使用其他颜色进行显示，本发明不限于以上的实施例。在实际应用中，本发明的实施例的车载液晶显示装置能够清楚地显示所需的信息，同时功率和发热量也得以控制在合理范围以内。
根据本发明的一个实施例，如图2所示，车载液晶显示装置的不同显示区域之间设置遮光元件30，以隔开不同显示区域的背光。遮光元件30是有利的，例如当不同显示区域的背光光源(例如，LED 110)的颜色不同的时候，不同颜色的光通过遮光元件30隔开，由此避免了不同颜色的光相互干扰。然而，应该理解，不设置遮光元件，根据本发明实施例的车载液晶显示装置也能够正常显示。在一个实施例中，相同颜色的显示区域之间也可以设置遮光元件30。
在本发明的一个实施例中，车载液晶显示装置的至少一个显示区域包括至少一个混色背光显示区域M，例如，车载液晶显示装置的至少一个显示区域包括一个混色背光显示区域M，该混色背光显示区域包括至少两种颜色的背光光源，至少两种颜色的背光光源混合布置，如图4所示。在图4中，混色背光显示区域M包括多个LED，所述多个LED可包括相邻设置的绿光LED 101g和红光LED 101r，即每个绿光LED 101g相邻设置一个红光LED 101r，每个红光LED 101r相邻设置一个绿光LED 101g。在一个实施例中，绿光LED 101g和 红光LED 101r一起构成的LED阵列的密集程度与其他显示区域背光光源中LED的密集程度一样，换句话说，可以看作将其中部分绿光LED 101g换成红光LED 101r即可形成混色背光光源。在本发明的另一实施例中，为了提高显示亮度和显示效果，如图5所示，绿光LED 101g和红光LED 101r交替地布置，并且红光LED 101r和绿光LED 101g基本上邻接布置，图5中混色背光显示区域中的LED的布置方式显著提高了LED的密集程度，从而显示亮度和清晰度得以提高。在本发明的其他实施例中，背光光源的LED还可以以其他方式布置。在本发明的其他实施例中，混色背光显示区域M可以包括其他两种颜色的LED的混合排列。在本发明的其他实施例中，混色背光显示区域M可以包括其他三种或四种颜色的LED的混合排列。
在一个实施例中，混色背光显示区域M可以交替闪烁地显示。例如，红色LED背光光源(包括多个LED 101r)和绿色LED背光光源(包括多个LED101g)交替地发光，由此混色背光显示区域交替地闪烁显示红色的图像和绿色的图像。红色LED发出的光显示的图像和绿色LED发出的光显示的图像可以是相同的图像，也可以是不同的图像。在本发明的其他实施例中，混色背光显示区域M可采用与红色和绿色不同的其他两种颜色进行图像的交替显示。在本发明的其他实施例中，混色背光显示区域M可以是其他三种或以上颜色的图像按某一顺序交替地显示。例如，混色背光显示区域M的背光光源包括例如红色LED、绿色LED以及蓝色LED，这些背光光源根据需要依次发光以便显示不同颜色的图像。闪烁显示的效果是明显的，车辆的驾驶者很容易被闪烁的图像引起注意。在另一实施例中，混色背光显示区域M中的所有颜色的背光光源同时发光。例如，混色背光显示区域包括红色LED和绿色LED，红色LED和绿色LED可以同时发光，由此混色后显示橙色图像。
在一个实施例中，混色背光显示区域M可以不交替地闪烁显示不同颜色的图像，而在一个时间段仅显示一种颜色的图像，例如仅显示红色图像，或仅显示绿色图像，或仅显示蓝色图像等。
在本发明的一个实施例中，显示区域可以包括至少一个混色背光显示区域M。每个混色背光显示区域M可以包括两种或多种颜色的背光LED阵列。每个混色背光显示区域M可以在一定时间段内仅显示一种颜色的图像，换句话说，混色背光显示区域M可以如单色背光显示区一样显示图像或符号等信息。
根据本发明的一个实施例，提供一种车辆，该车辆包括上述的车载液晶显示装置。
根据本发明的一个实施例，提供一种车载液晶显示装置的制造方法，包括形成背光光源10；形成液晶面板20，其中液晶面板20不包括彩膜层。
在一个实施例中，形成背光光源的步骤包括在形成背光光源的区域内形成至少一个分区，每个分区布置特定颜色的背光光源。背光光源可以是LED光源101。
在一个实施例中，所述制造方法还包括在不同分区之间设置遮光元件30。
在一个实施例中，形成背光光源的步骤包括在至少一个分区内布置至少两种颜色的背光光源，所述至少两种颜色的背光光源相互间隔或邻接布置，并且每个背光光源与相邻背光光源颜色不同，该分区即为前述的混色背光显示区域M。例如，在混色背光显示区域M交替地布置至少两种不同颜色的LED。具体的，在混色背光显示区域M交替地布置红光LED 101r和绿光LED 101g。在一个实施例中，形成背光光源的步骤包括形成至少一个混色背光显示区域M，在每个混色背光显示区域M中布置至少两种颜色的发光二极管。
尽管已经参考本发明的典型实施例，具体示出和描述了本发明，但本领域普通技术人员应当理解，在不脱离所附权利要求所限定的本发明的精神和范围的情况下，可以对这些实施例进行形式和细节上的多种改变。

Claims (13)

  1. 一种车载液晶显示装置，包括至少一个背光光源和液晶面板，其中，所述液晶面板不包括彩膜层。
  2. 根据权利要求1所述的车载液晶显示装置，其中，所述车载液晶显示装置具有至少一个显示区域，每个显示区域用于独立地显示相应的信息。
  3. 根据权利要求2所述的车载液晶显示装置，其中，所述车载液晶显示装置还包括设置在不同显示区域之间的遮光元件，以隔开不同显示区域的背光。
  4. 根据权利要求2所述的车载液晶显示装置，其中，不同的显示区域中设有不同颜色的背光光源。
  5. 根据权利要求2所述的车载液晶显示装置，其中，所述至少一个显示区域包括用于显示警示信息的第一显示区域，所述第一显示区域中设有红色的背光光源。
  6. 根据权利要求2所述的车载液晶显示装置，其中，所述至少一个显示区域包括用于显示提示信息的第二显示区域，所述第二显示区域中设有绿色的背光光源。
  7. 根据权利要求2所述的车载液晶显示装置，其中，所述至少一个显示区域包括至少一个具有混色背光的第三显示区域，所述第三显示区域中设有至少两种颜色的背光光源，所述至少两种颜色的背光光源混合布置。
  8. 根据权利要求7所述的车载液晶显示装置，其中，所述第三显示区域能够通过所述至少两种颜色的背光光源交替闪烁实现显示，或者所述至少两种颜色的背光光源同时发光以显示混色图像。
  9. 一种车载液晶显示装置的制造方法，包括：
    形成至少一个背光光源；和
    形成液晶面板，
    其中液晶面板不包括彩膜层。
  10. 根据权利要求9所述的方法，其中，形成背光光源的步骤包括：形成至少一个第一分区，每个第一分区中布置特定颜色的背光光源。
  11. 根据权利要求9所述的方法，其中，所述方法还包括：在不同分区之间设置遮光元件。
  12. 根据权利要求9所述的方法，其中，形成背光光源的步骤包括：形成至少一个第二分区，每个第二分区内布置至少两种颜色的背光光源，所述至少两种颜色的背光光源相互间隔或邻接布置，并且每个背光光源与相邻背光光源颜色不同。
  13. 一种车辆，包括权利要求1-8中任一项所述的车载液晶显示装置。
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