CN112596246A - Vehicle-mounted head-up display screen, brightness control method and manufacturing method - Google Patents

Vehicle-mounted head-up display screen, brightness control method and manufacturing method Download PDF

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Publication number
CN112596246A
CN112596246A CN202011624463.7A CN202011624463A CN112596246A CN 112596246 A CN112596246 A CN 112596246A CN 202011624463 A CN202011624463 A CN 202011624463A CN 112596246 A CN112596246 A CN 112596246A
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vehicle
information
display
module
tft
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王辉
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Truly Opto Electronics Ltd
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Truly Opto Electronics Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Instrument Panels (AREA)

Abstract

The invention discloses a vehicle-mounted head-up display screen, a brightness control method and a manufacturing method, wherein the display screen comprises a control system and a display system, the control system controls the brightness and the position of a projection display image of the display system, the display system comprises a TFT module, the TFT module comprises a rear plate module, and the rear plate module comprises a light isolating layer, a soaking layer and rear plate glass; the brightness control method comprises setting the photosensitive information as an environment brightness parameter; comparing the sensitization information with a second threshold value to obtain an environment brightness parameter; the manufacturing method comprises the steps that a vehicle-mounted head-up display TFT control panel adopts GIP wiring; setting a negative temperature coefficient material in the TFT control panel target; a heat equalizing layer is arranged on the rear side of rear plate glass of a TFT module of the vehicle-mounted head-up display screen. By implementing the invention, the electron mobility is improved, the over-high temperature of the TFT is prevented, the influence of the photoelectric effect on the TFT is reduced, the brightness is controlled, and the working difficulty of the TFT module is reduced.

Description

Vehicle-mounted head-up display screen, brightness control method and manufacturing method
Technical Field
The invention relates to the technical field of display screens, in particular to a vehicle-mounted head-up display screen, a brightness control method and a manufacturing method.
Background
The HUD head-up digital display function carried by the automobile projects important information such as running information tire pressure, speed, rotating speed and the like onto the front section glass of the cockpit by utilizing the principle of optical reflection, and an owner can clearly see the important information without lowering head when driving. At ordinary times, the car owner observes between the instrument of near and the road of observing the distant place, need shift the sight from the road to the panel board, because the lower outer road luminance of luminance is higher outside the car in the car, eyes need experience by bright to dark to bright process again, eyes need adjust, HUD heads up and shows and just can avoid this kind of condition, even also let us have sufficient time to deal with in the face of emergency, need not look at the panel board with a distraction, alleviate the fatigue of eyes, bring the facility for driving.
HUD new line display device can show all instrument data, and ADAS drives auxiliary system for example, can play anticollision early warning function, and the front truck starts reminding function, and lane skew reminds function etc.. Road information is mastered in real time, driving video recording is carried out in real time, driving safety is guaranteed, pressure and temperature of tires can be monitored in real time through a screen in the driving process, and safe driving of the tires is guaranteed.
The vehicle-mounted HUD mainly comprises four parts, namely a data interface, an information processor, a projection device and a bearing display device. The speed per hour, the rotating speed of the vehicle and even the information such as direction indication in navigation are collected through a data interface, and then the information is processed by an information processor and then is sent to a projection device to be projected onto a device bearing a display.
At present on-vehicle head-up display screen uses more and more, and HUD display screen uses more and more popularizing, but its work degree of difficulty that surpasss luminance demand greatly increased TFT display screen, and under outdoor extremely cold condition, on-vehicle head-up display screen can not realize normal demonstration because electron mobility speed reduces by a wide margin simultaneously. The HUD display screen is because bottom emission, and the light of outgoing can shine on the TFT panel, and the TFT panel produces photoelectric effect under the illumination, can lead to the condition that the leakage current increases to influence display effect.
Disclosure of Invention
The problem that current on-vehicle head-up display screen exists is: the work difficulty of the TFT display screen is greatly increased when the brightness requirement is exceeded, and meanwhile, under the outdoor extremely cold condition, normal display cannot be realized due to the fact that the electron mobility speed of the vehicle-mounted head-up display screen is greatly reduced. The HUD display screen is because bottom emission, and the light of outgoing can shine on the TFT panel, and the TFT panel produces photoelectric effect under the illumination, can lead to the condition that the leakage current increases to influence display effect.
Aiming at the problems, the vehicle-mounted head-up display screen, the brightness control method and the manufacturing method are provided, and the driving capability of the GIP circuit is ensured by adopting a negative temperature coefficient material in the TFT control panel; the soaking layer of the rear glass plate can quickly improve the working temperature of the display screen; the electron mobility of the panel is effectively improved. The uniform heat layer can quickly dissipate heat, so that the problem of overhigh temperature of the TFT is solved; the light-blocking layer can reduce the influence of the photoelectric effect on the TFT. Through controlling luminance, can reduce the work degree of difficulty of TFT module, the user also can acquire the demonstration luminance that adapts to on-vehicle environment simultaneously, can also adjust on-vehicle display position.
The utility model provides a vehicle-mounted head-up display screen, includes control system and display system, control system control display system projection display image's luminance and position, display system includes the TFT module, the TFT module includes the back plate module, the back plate module includes light-proof layer, even heat layer and back plate glass, light-proof layer, even heat layer set up the rear side of back plate glass.
With reference to the vehicle-mounted head-up display screen of the present invention, in a first possible implementation manner, the control system includes a brightness control unit, where the brightness control unit includes an optical module, an adjustment module, and a determination module;
the optical module is used for detecting photosensitive information of an imaging area of the head-up display screen;
the adjusting module is used for adjusting the photosensitive information according to the environment brightness state to obtain environment brightness information;
and the determining module is used for determining the display brightness of the vehicle-mounted head-up display screen according to the environment brightness information.
With reference to the first embodiment and the second possible embodiment of the present invention, in a second possible embodiment, the control system further includes a position adjusting unit, configured to adjust and display a position of an image according to environment and vehicle condition information, and the position adjusting unit includes an information obtaining module, an information transmitting module, and a driving module;
the information acquisition module is used for acquiring vehicle-mounted environment information;
the information transmission module is used for receiving and outputting the vehicle-mounted environment information;
and the driving module is used for controlling the vehicle-mounted windshield to present a projection virtual image according to the transmitted information and adjusting the position of the virtual image according to the vehicle condition.
With reference to the second embodiment, in a third possible embodiment, the information obtaining module includes a rate detecting unit, a distance detecting unit, and a guiding information unit;
a speed detection unit for detecting vehicle speed information;
a distance detection unit for detecting distance information between vehicles;
and the guiding information unit is used for acquiring the navigation positioning information.
With reference to the second embodiment of the present invention, in a fourth possible embodiment, the driving module includes a position control unit, a display control unit and an imaging control unit;
a position control unit for controlling the virtual image position according to a vehicle condition;
a display control unit for controlling display of information processing;
an imaging control unit for presenting the projected virtual image at a position in front of a user of the vehicle.
A brightness control method for a vehicle-mounted head-up display screen comprises the following steps
When the vehicle-mounted environment brightness is detected to be lower than a first threshold value, setting the photosensitive information as an environment brightness parameter;
and when the vehicle-mounted ambient brightness is detected to be higher than the first threshold value, comparing the photosensitive information with a second threshold value to obtain an ambient brightness parameter.
With reference to the brightness control method of the present invention, in a first possible implementation manner, the steps are: when the vehicle-mounted environment brightness is detected to be higher than a first threshold value, the photosensitive information is compared with a second threshold value to obtain an environment brightness parameter, and the method comprises the following substeps:
when the light sensing information is smaller than or equal to a second threshold value, compensating the light sensing information to obtain the environment brightness parameter;
and when the light sensitive information is larger than the two threshold values, determining the light sensitive information as the environment brightness parameter.
A manufacturing method of a vehicle-mounted head-up display screen comprises the following steps:
the vehicle-mounted head-up display TFT control panel adopts GIP wiring;
arranging a negative temperature coefficient material in the TFT control panel target;
and arranging a heat equalizing layer at the rear side of rear plate glass of a TFT module of the vehicle-mounted head-up display screen.
The invention relates to a method for manufacturing a vehicle-mounted head-up display screen, which comprises the following steps: setting a negative temperature coefficient material in the TFT control panel target, wherein the negative temperature coefficient material is obtained by the following steps:
sputtering the negative temperature coefficient alloy material on a dry substrate by adopting a magnetron sputtering method to obtain a negative temperature coefficient film;
and carrying out annealing oxidation treatment on the negative temperature coefficient film in an atmosphere containing oxygen.
By implementing the vehicle-mounted head-up display screen, the brightness control method and the manufacturing method, the driving capability of the GIP circuit is favorably ensured by adopting a negative temperature coefficient material in the TFT control panel; the soaking layer of the rear glass plate can quickly improve the working temperature of the display screen; the electron mobility of the panel is effectively improved. The uniform heat layer can quickly dissipate heat, so that the problem of overhigh temperature of the TFT is solved; the light-blocking layer can reduce the influence of the photoelectric effect on the TFT. Through controlling luminance, can reduce the work degree of difficulty of TFT module, the user also can acquire the demonstration luminance that adapts to on-vehicle environment simultaneously, can also adjust on-vehicle display position.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a TFT module of the LCD panel of the present invention;
FIG. 2 is a schematic diagram of the logical connection of the vehicle-mounted head-up display screen according to the present invention;
FIG. 3 is a schematic diagram of the logical connection of the brightness control unit in the control system of the present invention;
FIG. 4 is a schematic diagram of the logical connection of the position adjustment unit in the control system of the present invention;
FIG. 5 is a flowchart illustrating steps of a method for controlling brightness of a vehicle-mounted head-up display screen according to the present invention;
FIG. 6 is a flowchart illustrating a vehicle-mounted head-up display brightness control method sub-step S12 according to the present invention;
FIG. 7 is a flowchart illustrating steps of a method for manufacturing a vehicle-mounted head-up display screen according to the present invention;
FIG. 8 is a flowchart illustrating a sub-step S22 of a method for manufacturing a vehicle-mounted head-up display screen according to the present invention;
the part names indicated by the numbers in the drawings are as follows: 100-control system, 110-brightness control unit, 111-optical module, 112-adjusting module, 113-determining module, 120-position control unit, 121-information acquisition module, 122-information transmission module, 123-driving module, 200-display system, 201-rear plate module, 2011-light-isolating layer, 2012-heat-homogenizing layer, 202-liquid crystal layer, 203-front plate module.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments given herein without any creative effort, shall fall within the protection scope of the present invention.
The problem that current on-vehicle head-up display screen exists is: the work difficulty of the TFT display screen is greatly increased when the brightness requirement is exceeded, and meanwhile, under the outdoor extremely cold condition, normal display cannot be realized due to the fact that the electron mobility speed of the vehicle-mounted head-up display screen is greatly reduced. The HUD display screen is because bottom emission, and the light of outgoing can shine on the TFT panel, and the TFT panel produces photoelectric effect under the illumination, can lead to the condition that the leakage current increases to influence display effect.
In order to solve the problems, a vehicle-mounted head-up display screen, a brightness control method and a manufacturing method thereof are provided.
A vehicle-mounted head-up display screen is shown in figure 1, and figure 1 is a structural schematic diagram of a liquid crystal display (TFT) module of the invention and comprises a control system 100 and a display system 200, wherein the control system 100 controls the brightness and the position of a projection display image of the display system 200, the display system 200 comprises the TFT module, the TFT module comprises a rear plate module 201, the rear plate module 201 comprises a light isolating layer 2011, a heat equalizing layer and rear plate glass, and the light isolating layer 2011 and the heat equalizing layer are arranged on the rear side of the rear plate glass. The driving capability of the GIP circuit is ensured by adopting a negative temperature coefficient material in the TFT control panel; the soaking layer 2012 of the rear glass plate can quickly improve the working temperature of the display screen; the electron mobility of the panel is effectively improved. The uniform heat layer 2012 can quickly dissipate heat to prevent the problem of overhigh temperature of the TFT; the light-blocking layer 2011 can reduce the influence of the photoelectric effect on the TFT.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating a logical connection of a vehicle-mounted head-up display screen according to the present invention, a control system 100 includes a brightness control unit 110, referring to fig. 3, fig. 3 is a schematic diagram illustrating a logical connection of the brightness control unit 110 in the control system according to the present invention, the brightness control unit 110 includes a light module 111, an adjustment module 112, and a determination module 113; the optical module 111 is used for detecting photosensitive information of an imaging area of the head-up display screen; the adjusting module 112 is configured to adjust the photosensitive information according to the ambient light state to obtain ambient brightness information; and the determining module 113 is used for determining the display brightness of the vehicle-mounted head-up display screen according to the environment brightness information.
In an embodiment, the light module 111 first detects the ambient brightness of the vehicle, and when the vehicle light is detected to be greater than the first threshold and smaller than the second threshold, the HUD display brightness is controlled only according to the detected photosensitive information of the HUD imaging area, that is, the photosensitive information is determined as the ambient brightness parameter; when it is detected that the ambient brightness of the vehicle is greater than the second threshold brightness, the sensed light information needs to be further adjusted according to the magnitude relation between the sensed light information of the HUD imaging area and the second threshold brightness, and the adjusted sensed light information is determined as the ambient brightness parameter. The second threshold brightness is preset according to vehicle parameters, lamp light intensity and other factors.
In an embodiment, when the light sensing information of the HUD imaging area is greater than the second threshold brightness, it may be considered that the light of the vehicle lamp has no influence or a small influence on the HUD display brightness, and therefore, the light sensing information only needs to be determined as the ambient brightness parameter; when the regional sensitization information of HUD formation of image is less than or equal to second threshold value luminance, then the light of car light can cause the interference to HUD's display brightness for HUD's display brightness reduces, consequently need further compensate the regional sensitization information of HUD formation of image that detects, with obtaining new sensitization information, and confirm this new sensitization information as ambient brightness parameter, and then promote HUD's display brightness, with the content that the HUD shows of seeing that guarantees that the driver can be clear.
The control system 100 further includes a position adjusting unit for adjusting and displaying the image position according to the environment and vehicle condition information, as shown in fig. 4, fig. 4 is a schematic diagram of logical connection of the position adjusting unit in the control system of the present invention, and includes an information obtaining module 121, an information transmitting module 122 and a driving module 123; the information acquisition module 121 is configured to acquire vehicle-mounted environment information; the information transmission module 122 is used for receiving and outputting the vehicle-mounted environment information; and the driving module 123 is configured to control the vehicle-mounted windshield to present a projection virtual image according to the transmitted information, and adjust a virtual image position according to the vehicle condition.
Further, the information obtaining module 121 includes a rate detecting unit, a distance detecting unit, and a guiding information unit; a speed detection unit for detecting vehicle speed information; a distance detection unit for detecting distance information between vehicles; and the guiding information unit is used for acquiring the navigation positioning information.
Further, the driving module 123 includes a position control unit 120, a display control unit, and an imaging control unit; a position control unit 120 for controlling the virtual image position according to the vehicle condition; a display control unit for controlling display of information processing; an imaging control unit for presenting the projected virtual image at a position in front of a user of the vehicle.
Referring to fig. 5, fig. 5 is a flow chart diagram of steps of a brightness control method for a vehicle-mounted head-up display screen, and the method comprises the steps
S11, setting the photosensitive information as an environment brightness parameter when detecting that the vehicle-mounted environment brightness is lower than a first threshold value; and S12, when the vehicle-mounted environment brightness is detected to be higher than the first threshold value, comparing the photosensitive information with the second threshold value to acquire the environment brightness parameter.
Preferably, as shown in fig. 6, fig. 6 is a flowchart illustrating a sub-step S12 of the brightness control method for vehicle-mounted head-up display screen according to the present invention, and step 12 includes the sub-steps of:
s121, when the light sensing information is smaller than or equal to a second threshold value, compensating the light sensing information to obtain an environment brightness parameter; and S122, when the light sensing information is larger than the two threshold values, determining the light sensing information as an environment brightness parameter. The light module 111 firstly detects the ambient brightness of the vehicle, and when the vehicle light is detected to be larger than the first threshold and smaller than the second threshold, the HUD display brightness is controlled only according to the detected photosensitive information of the HUD imaging area, that is, the photosensitive information is determined as the ambient brightness parameter; when it is detected that the ambient brightness of the vehicle is greater than the second threshold brightness, the sensed light information needs to be further adjusted according to the magnitude relation between the sensed light information of the HUD imaging area and the second threshold brightness, and the adjusted sensed light information is determined as the ambient brightness parameter. The second threshold brightness is preset according to vehicle parameters, lamp light intensity and other factors. When the light sensing information of the HUD imaging area is larger than the second threshold brightness, the light of the car lamp can be considered to have no influence or small influence on the HUD display brightness, and therefore, the light sensing information is only required to be determined as the environment brightness parameter; when the regional sensitization information of HUD formation of image is less than or equal to second threshold value luminance, then the light of car light can cause the interference to HUD's display brightness for HUD's display brightness reduces, consequently need further compensate the regional sensitization information of HUD formation of image that detects, with obtaining new sensitization information, and confirm this new sensitization information as ambient brightness parameter, and then promote HUD's display brightness, with the content that the HUD shows of seeing that guarantees that the driver can be clear.
Fig. 7 shows a method for manufacturing a vehicle-mounted head-up display screen, where fig. 7 is a schematic flow chart illustrating steps of the method for manufacturing the vehicle-mounted head-up display screen according to the present invention, and the method includes the steps of:
s21, the TFT control panel of the vehicle-mounted head-up display screen adopts GIP wiring; s22, setting a negative temperature coefficient material in the TFT control panel target; s23, arranging a heat equalizing layer 2012 on the rear side of the rear plate glass of the TFT module of the vehicle-mounted head-up display screen.
Preferably, as shown in fig. 8, fig. 8 is a flowchart illustrating a sub-step S22 of a method for manufacturing a vehicle-mounted head-up display screen in the present invention, and step S22 includes:
s221, sputtering the negative temperature coefficient alloy material onto a dry substrate by adopting a magnetron sputtering method to obtain a negative temperature coefficient film; s222, annealing and oxidizing the negative temperature coefficient film in an atmosphere containing oxygen.
The adoption of negative temperature coefficient materials is beneficial to ensuring the driving capability of the GIP circuit; the soaking layer 2012 of the rear glass plate can quickly improve the working temperature of the display screen; the electron mobility of the panel is effectively improved.
According to the vehicle-mounted head-up display screen, the brightness control method and the manufacturing method, the driving capability of the GIP circuit is guaranteed by adopting the negative temperature coefficient material in the TFT control panel; the soaking layer 2012 of the rear glass plate can quickly improve the working temperature of the display screen; the electron mobility of the panel is effectively improved. The uniform heat layer 2012 can quickly dissipate heat to prevent the problem of overhigh temperature of the TFT; the light-blocking layer 2011 can reduce the influence of the photoelectric effect on the TFT. Through controlling luminance, can reduce the work degree of difficulty of TFT module, the user also can acquire the demonstration luminance that adapts to on-vehicle environment simultaneously, can also adjust on-vehicle display position.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a vehicle-mounted head-up display screen, its characterized in that, includes control system and display system, control system control display system projection display image's luminance and position, display system includes the TFT module, the TFT module includes the backplate module, the backplate module includes light-proof layer, soaking layer and backplate glass, light-proof layer, soaking layer set up the rear side of backplate glass.
2. The on-vehicle heads-up display of claim 1, wherein the control system includes a brightness control unit comprising a light module, an adjustment module, and a determination module;
the optical module is used for detecting photosensitive information of an imaging area of the head-up display screen;
the adjusting module is used for adjusting the photosensitive information according to the environment brightness state to obtain environment brightness information;
and the determining module is used for determining the display brightness of the vehicle-mounted head-up display screen according to the environment brightness information.
3. The vehicle-mounted head-up display screen according to claim 2, wherein the control system further comprises a position adjusting unit for adjusting and displaying the image position according to the environment and vehicle condition information, and the position adjusting unit comprises an information acquisition module, an information transmission module and a driving module;
the information acquisition module is used for acquiring vehicle-mounted environment information;
the information transmission module is used for receiving and outputting the vehicle-mounted environment information;
and the driving module is used for controlling the vehicle-mounted windshield to present a projection virtual image according to the transmitted information and adjusting the position of the virtual image according to the vehicle condition.
4. The on-vehicle heads-up display of claim 3, wherein the information acquisition module includes a rate detection unit, a distance detection unit, and a guidance information unit;
a speed detection unit for detecting vehicle speed information;
a distance detection unit for detecting distance information between vehicles;
and the guiding information unit is used for acquiring the navigation positioning information.
5. The on-vehicle heads-up display of claim 3, wherein the drive module includes a position control unit, a display control unit, and an imaging control unit;
a position control unit for controlling the virtual image position according to a vehicle condition;
a display control unit for controlling display of information processing;
an imaging control unit for presenting the projected virtual image at a position in front of a user of the vehicle.
6. A method for controlling brightness of a vehicle-mounted head-up display using the vehicle-mounted head-up display according to any one of claims 1 to 5, comprising the steps of
When the vehicle-mounted environment brightness is detected to be lower than a first threshold value, setting the photosensitive information as an environment brightness parameter;
and when the vehicle-mounted ambient brightness is detected to be higher than the first threshold value, comparing the photosensitive information with a second threshold value to obtain an ambient brightness parameter.
7. Vehicle-mounted head-up display according to claim 6, characterized in that the steps of: when the vehicle-mounted environment brightness is detected to be higher than a first threshold value, the photosensitive information is compared with a second threshold value to obtain an environment brightness parameter, and the method comprises the following substeps:
when the light sensing information is smaller than or equal to a second threshold value, compensating the light sensing information to obtain the environment brightness parameter;
and when the light sensitive information is larger than the two threshold values, determining the light sensitive information as the environment brightness parameter.
8. A method for manufacturing a vehicle-mounted head-up display using the vehicle-mounted head-up display according to any one of claims 1 to 5, comprising the steps of:
the vehicle-mounted head-up display TFT control panel adopts GIP wiring;
arranging a negative temperature coefficient material in the TFT control panel target;
and arranging a heat equalizing layer at the rear side of rear plate glass of a TFT module of the vehicle-mounted head-up display screen.
9. The method for manufacturing an on-vehicle head-up display screen according to claim 8, wherein the steps of: setting a negative temperature coefficient material in the TFT control panel target, wherein the negative temperature coefficient material is obtained by the following steps:
sputtering the negative temperature coefficient alloy material on a dry substrate by adopting a magnetron sputtering method to obtain a negative temperature coefficient film;
and carrying out annealing oxidation treatment on the negative temperature coefficient film in an atmosphere containing oxygen.
CN202011624463.7A 2020-12-30 2020-12-30 Vehicle-mounted head-up display screen, brightness control method and manufacturing method Pending CN112596246A (en)

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Application Number Priority Date Filing Date Title
CN202011624463.7A CN112596246A (en) 2020-12-30 2020-12-30 Vehicle-mounted head-up display screen, brightness control method and manufacturing method

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Application Number Priority Date Filing Date Title
CN202011624463.7A CN112596246A (en) 2020-12-30 2020-12-30 Vehicle-mounted head-up display screen, brightness control method and manufacturing method

Publications (1)

Publication Number Publication Date
CN112596246A true CN112596246A (en) 2021-04-02

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