WO2015071346A1 - Affichage présentant une unité de commande, véhicule à moteur et procédé - Google Patents

Affichage présentant une unité de commande, véhicule à moteur et procédé Download PDF

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Publication number
WO2015071346A1
WO2015071346A1 PCT/EP2014/074455 EP2014074455W WO2015071346A1 WO 2015071346 A1 WO2015071346 A1 WO 2015071346A1 EP 2014074455 W EP2014074455 W EP 2014074455W WO 2015071346 A1 WO2015071346 A1 WO 2015071346A1
Authority
WO
WIPO (PCT)
Prior art keywords
amoled
subpixels
display
control unit
temperature
Prior art date
Application number
PCT/EP2014/074455
Other languages
German (de)
English (en)
Inventor
Steffen Wildner
Kai Hohmann
Eckhard Pforr
Original Assignee
Continental Automotive Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2015071346A1 publication Critical patent/WO2015071346A1/fr

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Classifications

    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • 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
    • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
    • 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
    • B60K2360/143—Touch sensitive instrument input devices
    • B60K2360/1438—Touch screens
    • 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
    • B60K2360/16—Type of output information
    • B60K2360/166—Navigation
    • 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
    • B60K2360/16—Type of output information
    • B60K2360/171—Vehicle or relevant part thereof displayed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/10—Automotive applications

Definitions

  • the invention relates to an automotive suitable display with Active Matrix Organic Light Emitting Diodes, a so-called AMOLED.
  • TFT-LCD thin-film-transistor liquid crystal display
  • OLED organic light-emitting diode
  • AMOLEDs Active matrix OLEDs
  • AMOLEDs are self-luminous, d. h., the OLED is not a light valve like an LCD and does not require a backlight (backlight). AMOLEDs are without backlight due to the design very thin and therefore attractive. AMOLEDs have an extremely high contrast due to the self-lighting.
  • the luminescent property of AMOLEDs has the disadvantage that the OLED material loses luminosity with increasing operating time. This effect can essentially be explained by two physical principles. On the one hand, a current flow leads to burnout, so each pixel loses luminosity, the longer it is driven. On the other hand, a pixel also loses luminosity, the higher the Ambient temperature is.
  • the different baking behavior of the individual basic colors ⁇ has the disadvantage means that the color location shifts White with increasing service life, since white of the three primary colors ⁇ and their ratio is mixed together.
  • a display according to the invention comprises a control unit and a plurality of AMOLED subpixels (R, G, B).
  • the control unit may be configured to detect the temperature of at least one of the AMOLED subpixels and to drive the plurality of AMOLED subpixels based on the measured temperature.
  • aging can be counteracted on the basis of a detected temperature or temperature distribution. For example, at a high measured Conversely ⁇ ambient temperature of the power flow to the AMOLED subpixels can be reduced, so that there is no further increase in temperature.
  • control unit may be a ⁇ directed further to drive the plurality of AMOLED subpixels on the basis of an intensity of the control of individual AMOLED Sub ⁇ pixel.
  • a current flow to the AMOLED subpixels can be detected. Since the current flow has an influence on self-heating of the AMOLED subpixels, a stop ⁇ approximately compensation can be achieved based on the detected value.
  • control unit can be set up to control the plurality of AMOLED subpixels on the basis of a duration of the activation of individual AMOLED subpixels.
  • control unit may be configured to control the plurality of AMOLED subpixels on the basis of predetermined aging characteristics.
  • characteristic curves for aging characteristics are determined, independent of a specific display.
  • the characteristic ⁇ lines characterize the intensity of light relative to a light duration. Such characteristics may then be used as a basis for a compen sation ⁇ aging effects of AMOLED subpixels.
  • a display may further comprise a luminance sensor.
  • the control unit may be adapted in this case, be determined on the basis of an output ⁇ signal of the luminance sensor, a burnout individual AMOLED sub-pixel or a reference group of AMOLED sub-pixels and to drive the plurality of AMOLED subpixels of the display based on the Ausbrenn s determined ,
  • AMOLED subpixel control unit may be adapted according to an out ⁇ leadership form, less heavily used AMOLED subpixel down to dim in comparison to higher stress AMOLED subpixels. In this way may be homogenized a light ⁇ density and a color point on the display surface.
  • a display comprises a memory, for example for storing an operational history of each of the AMOLED subpixels.
  • the control unit may in this case be arranged to control the plurality of AMOLED subpixels on the basis of the operating history.
  • a power ⁇ vehicle on a display of the type described above is provided.
  • the following benefits result from the use of the self-emitting OLED technology with the properties of the burn-out behavior (greater luminance reduction of the luminous pixels compared to the non-luminous) for use in the motor vehicle is made possible. It is reucked ⁇ an operating current at rising temperatures, with which the self-heating is reduced and the service life is extended Le ⁇ , on the basis of detection of the operating temperature of the OLED displays.
  • a correction of the burn-out behavior can be provided by means of a storage of the operating state or the operating history (energization and temperature) of the subpixels or characteristic pixels in a memory and a use of this data.
  • Correction of the burn-out behavior can be provided by using the characteristic life behavior (luminance over temperature and time) of the OLED material.
  • a burn-out correction may be provided by using an FPGA or ASIC in combination with a memory to implement a corresponding algorithm.
  • the calculation rule for correcting the burn-out behavior can be implemented in the FPGA or ASIC and may include that less heavily energized pixels are dimmed back accordingly and thus the aging behavior is compensated.
  • the FPGA or ASIC can be switched between the output of the image source (eg graphics controller or LVDSDeserializer) and the input of the image sink (OLED display).
  • a luminance homogenization over the lifetime and temperature can be achieved, using the ⁇ called possibilities, both an individual as well as a Combination of the same.
  • a computer program may be provided for implementing a method that implements the aforementioned aspects of aging compensation in a control unit of a display as described above.
  • a ent ⁇ speaking computer program is preferably loaded into an Ar ⁇ beits Grande a control unit.
  • Such a computer program may be stored on a computer readable medium such as a CD-ROM or FLASH drive.
  • the computer program can also be provided via a network such as the Internet and can be downloaded into the working ⁇ memory of the control unit from this network.
  • FIG. 1 is a schematic diagram of a system according to a first embodiment.
  • FIG. 2 is a schematic diagram of a system according to a second embodiment.
  • FIG. 2 is a schematic diagram of a system according to a second embodiment.
  • FIG. 1 schematically shows a system according to a first embodiment, the system having an image source 10, a control unit 20, a memory 30 and a display 40.
  • a method for controlling the system according to the first embodiment can have the following steps. From an image source 10, data is transferred to the control unit 20 (arrow A). Further, the operating states of the individual AMOLED subpixel (red, green, blue or white) can be detected, in particular by ⁇ sondere
  • a detection of the operating conditions is performed in the display 40.
  • a stress quantity is determined, which in the following can be used as a parameter for a compensation.
  • the system in Figure 1 illustrates an open control loop.
  • a ⁇ gait parameters of the compensation algorithm are the typical or empirically determined aging characteristics of the OLED-Mate ⁇ rials, as for the colors red R, green field 50 G, and blue B are exemplified , As described above with ⁇ the characteristic curves for the different colors divorce.
  • the ambient temperature of the OLED is an input parameter.
  • the operating conditions (luminance and / or working temperature) individual AMOLED subpixels or cha ⁇ acteristic pixel groups are determined by the control unit 20 detects (arrow E) and stored in a memory 30 (arrow B).
  • FIG. 1 shows a typical curve for R, G and B for a typical luminance decrease of the OLED material over time and temperature or current. According to the first embodiment, therefore, predetermined
  • AMOLED subpixels or characteristic pixel groups Depending on the load of the individual AMOLED subpixels or characteristic pixel groups and taking into account the material behavior over temperature and lifetime then less heavily used AMOLED subpixels are dimmed down compared to heavily loaded AMOLED subpixels (arrow C).
  • a method for controlling a system according to a second Embodiment may include the following steps.
  • the operating states of the individual subpixels are first detected, in particular by
  • the material behavior itself is additionally characterized by measuring the burn-out behavior of the individual AMOLED subpixels (red, green, blue or white).
  • the measured or determined parameters are included in a Kom ⁇ pensationsalgorithmus.
  • the detection of the aging behavior of the OLED material takes place by the periodic measurement of reference pixels in the non-visible region 42 of the OLED display 40 by a luminance sensor 44 (for example a photodiode ) attached to the OLED display.
  • a defined current supply of this reference range provides a real feedback of the material properties in the compensation algorithm and ensures a closed re ⁇ gelschleife.
  • Figure 2 shows a system according to the second embodiment with closed loop.
  • the burnout of the OLED ⁇ Ma terials is determined for each individual OLED at runtime charak ⁇ acteristic points by energizing and measurement with light ⁇ density sensors and passed (arrow F).
  • material differences which can arise due to production over a long production period, also compensated.
  • the input parameters of the compensation algorithm are the aging characteristics of the OLED material determined on-the-fly. According to the second embodiment, therefore, an actual Characteristic calculated during operation, which is represented by a single characteristic in Figure 2.
  • the ambient temperature of the OLED is taken into account as a parameter.
  • the operating conditions (luminance and / or working temperature) of the individual AMOLED subpixel or pixel groups are characteristic of the Steuerungsein ⁇ unit 20 detects (arrow E) and stored in a memory 30 (arrow B).
  • the system used for the correction consists in hardware of a memory 30 for detecting the operating states of the pixels and a control unit 20, which may for example comprise a FPGA, processor or an ASIC, which offset each pixel at the input of corresponding one of the age-dependent Kom ⁇ pensationsvorschrift and correspondingly the aging behavior corrected ⁇ .
  • a control unit 20 which may for example comprise a FPGA, processor or an ASIC, which offset each pixel at the input of corresponding one of the age-dependent Kom ⁇ pensationsvorschrift and correspondingly the aging behavior corrected ⁇ .
  • the OLED material is heated less strongly by temperature-dependent current reduction and thus less stressed, as a result of which the lifetime of the individual pixels can be increased. While the invention has been illustrated and described in detail in the drawings and the foregoing description, such illustrations and descriptions are to be considered illustrative or exemplary only and not restrictive. The invention is not limited to the disclosed embodiments . Other variations of the disclosed embodiments may be understood and accomplished by one of ordinary skill in the art of practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. For example, the control unit as well as the memory can be structurally separated or also integrated into the display.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

De façon générale, un affichage selon l'invention présente une unité de commande et une pluralité de sous-pixels AMOLED. L'unité de commande peut être aménagée afin de détecter la température d'au moins un des sous-pixels AMOLED, et de commander la pluralité des sous-pixels AMOLED sur la base de la température mesurée. En raison d'une réduction de courant en fonction de la température, le matériau OLED est moins fortement chauffé et, de ce fait, moins soumis à des contraintes, de sorte que la durée de vie des pixels individuels peut être augmentée.
PCT/EP2014/074455 2013-11-14 2014-11-13 Affichage présentant une unité de commande, véhicule à moteur et procédé WO2015071346A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013223253.5A DE102013223253A1 (de) 2013-11-14 2013-11-14 Display mit einer Steuerungseinheit, Kraftfahrzeug und Verfahren
DE102013223253.5 2013-11-14

Publications (1)

Publication Number Publication Date
WO2015071346A1 true WO2015071346A1 (fr) 2015-05-21

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PCT/EP2014/074455 WO2015071346A1 (fr) 2013-11-14 2014-11-13 Affichage présentant une unité de commande, véhicule à moteur et procédé

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WO (1) WO2015071346A1 (fr)

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DE102016006890B4 (de) 2016-06-03 2022-06-30 e.solutions GmbH Technik zur Kompensation von Alterungserscheinungen einer Anzeigeeinheit und Computerprogrammprodukt zum Durchführen der Technik sowie Kraftfahrzeug mit einem System umfassend eine Steuervorrichtung und eine Anzeigeeinheit
DE102020214806A1 (de) 2020-11-25 2022-05-25 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und Vorrichtung zum Modellieren eines Alterungsverhaltens eines Displays

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US20040150594A1 (en) * 2002-07-25 2004-08-05 Semiconductor Energy Laboratory Co., Ltd. Display device and drive method therefor
EP2068299A2 (fr) * 2007-12-05 2009-06-10 Samsung Mobile Display Co., Ltd. Affichage électroluminescent organique et son procédé de commande

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TW200818973A (en) * 2006-10-11 2008-04-16 Au Optronics Corp Temperature regulative display system and controlling method of amoled panel
US20100201275A1 (en) * 2009-02-06 2010-08-12 Cok Ronald S Light sensing in display device
KR101871195B1 (ko) * 2011-02-17 2018-06-28 삼성디스플레이 주식회사 열화 보상부, 이를 포함하는 발광 장치 및 발광 장치의 열화 보상 방법
KR101760695B1 (ko) * 2011-03-21 2017-07-24 삼성전자 주식회사 휴대 단말기의 휘도 제어 방법 및 장치

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Publication number Priority date Publication date Assignee Title
US20040150594A1 (en) * 2002-07-25 2004-08-05 Semiconductor Energy Laboratory Co., Ltd. Display device and drive method therefor
EP2068299A2 (fr) * 2007-12-05 2009-06-10 Samsung Mobile Display Co., Ltd. Affichage électroluminescent organique et son procédé de commande

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