CN111624794B - Display device, driving method and vehicle-mounted display system - Google Patents
Display device, driving method and vehicle-mounted display system Download PDFInfo
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- CN111624794B CN111624794B CN202010601544.9A CN202010601544A CN111624794B CN 111624794 B CN111624794 B CN 111624794B CN 202010601544 A CN202010601544 A CN 202010601544A CN 111624794 B CN111624794 B CN 111624794B
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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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
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- 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
- G09G3/3406—Control of illumination source
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- 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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- Engineering & Computer Science (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
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Abstract
The application discloses a display module, a display device, a driving method and a vehicle-mounted display system, wherein the display module comprises: a display panel having a plurality of first pixel regions and a plurality of second pixel regions distributed in an array; the display panel comprises an array substrate and a liquid crystal layer which are sequentially stacked along the light emitting direction, and a plurality of first display devices are arranged on the array substrate; the array substrate further comprises a first pixel electrode and a first public electrode which are arranged corresponding to the first pixel area, and a second pixel electrode and a second public electrode which are arranged corresponding to the second pixel area, wherein the first pixel electrode in each first pixel area is electrically connected with the first display device, and the second pixel electrode and the second public electrode are connected with the same external voltage. When the first display device or other components of the display panel are damaged, the first pixel area of the display panel cannot normally display, the second pixel area is used for realizing simple display of the display module, so that the display module is prevented from being completely black, cannot display and influences use.
Description
Technical Field
The application belongs to the technical field of electronic products, and particularly relates to a display device, a driving method and a vehicle-mounted display system.
Background
The existing vehicle-mounted display system is used for displaying vehicle running information such as vehicle running speed, oil quantity and the like, and once the display screen is blacked, the information cannot be displayed in real time, so that great potential safety hazards are generated when the vehicle runs.
Therefore, a new display device, a driving method, and a vehicle-mounted display system are needed.
Disclosure of Invention
The embodiment of the application provides a display device, a driving method and a vehicle-mounted display system, wherein the display device and the driving method realize simple display of a display module through a second pixel area, so that the phenomenon that the display module is completely black in screen and cannot display to influence use is avoided.
In a first aspect, an embodiment of the present application provides a display apparatus, including: display module, include: a display panel having a plurality of first pixel regions and a plurality of second pixel regions distributed in an array; the display panel comprises an array substrate and a liquid crystal layer which are sequentially stacked along the light emitting direction, and a plurality of first display devices are arranged on the array substrate; the array substrate further comprises a first pixel electrode and a first public electrode which are arranged corresponding to the first pixel area, and a second pixel electrode and a second public electrode which are arranged corresponding to the second pixel area, wherein the first pixel electrode in each first pixel area is electrically connected with the first display device, and the second pixel electrode and the second public electrode are connected with external voltage; the backlight module is arranged on one side of the display panel of the display module and comprises a backlight driving substrate and light-emitting elements arranged on the backlight driving substrate in an array manner; the control part is respectively connected with the display panel and the backlight module in a signal manner and is used for driving the first pixel area to display a first display image under a first display condition through the first display device or driving the light-emitting element through the backlight driving substrate and driving the second pixel area to display a second display image under a second display condition; the first display condition is that the first display device or the driving chip for controlling the first pixel area to emit light and display is not damaged, and the second display condition is that the first display device or the driving chip for controlling the first pixel area to emit light and display is damaged.
In a second aspect, an embodiment of the present application provides a driving method of a display device, which is applied to the display device, where when the display device is under a first display condition, the control portion inputs a pixel driving voltage to the array substrate to enable the first pixel area to display a first display image; when the display device is in a second display condition, the control part inputs a second backlight voltage and a second external driving voltage to the backlight driving substrate and the external driving board, respectively, so that the second pixel area displays a second display image.
In a third aspect, an embodiment of the present application provides a vehicle display system, including the display device described above.
Compared with the prior art, the display module provided by the embodiment of the application comprises the display panel, wherein the display panel comprises the array substrate and the liquid crystal layer which are sequentially laminated along the light emitting direction, the first pixel electrode in each first pixel area is electrically connected with the first display device, the second pixel electrode and the second common electrode are connected with the same external voltage, namely, the display light transmission of the first pixel area is controlled by the first display device of the display panel, and the display light transmission of the second pixel area of the display panel is not controlled by the display panel but controlled by the external voltage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a front view of a display module provided according to a first embodiment of the present application;
fig. 2 is a front view of a display module provided according to a second embodiment of the present application;
fig. 3 is a front view of a display module according to a third embodiment of the present application;
FIG. 4 is a schematic diagram of a pixel arrangement according to a first embodiment of the present application;
FIG. 5 is a schematic diagram of a pixel arrangement according to a second embodiment of the present application;
FIG. 6 is a schematic diagram of a pixel arrangement according to a third embodiment of the present application;
FIG. 7 is a schematic diagram of a pixel arrangement according to a fourth embodiment of the present application;
FIG. 8 is a schematic diagram of a connection of a display device according to an embodiment of the present application;
fig. 9 is a front view of a display device provided according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a backlight module according to an embodiment of the application;
fig. 11 is a flowchart of a driving method of a display device according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
In order to better understand the present application, a display device, a driving method, and an in-vehicle display system according to an embodiment of the present application are described in detail below with reference to fig. 1 to 10.
Referring to fig. 1 to 2, a display module 100 according to an embodiment of the application includes: a display panel having a plurality of first pixel areas A and a plurality of second pixel areas B distributed in an array; the display panel comprises an array substrate 2 and a liquid crystal layer 1 which are sequentially stacked along a light emitting direction, a plurality of first display devices 21 are arranged on the array substrate 2, the array substrate 2 further comprises a first pixel electrode 22, a first common electrode 23 and a second pixel electrode 25 and a second common electrode 24 which are arranged corresponding to a first pixel area A and a second pixel area B, the first pixel electrode 22 and the first display devices 21 in each first pixel area A are electrically connected, and the second pixel electrode 25 and the second common electrode 24 are connected with external voltage.
The display module 100 provided by the embodiment of the application comprises a display panel, wherein the display panel comprises an array substrate 2 and a liquid crystal layer 1 which are sequentially stacked along a light emitting direction, a first pixel electrode 22 in each first pixel area A is electrically connected with a first display device 21, a second pixel electrode 25 and a second common electrode 24 are connected with external voltage, namely, the display light transmission of the first pixel area A is controlled by the first display device 21 of the display panel, and the display light transmission of a second pixel area B of the display panel is not controlled by the display panel but controlled by the external voltage, so that when the first display device 21 or other components of the display panel are damaged, the liquid crystal layer 1 of the second pixel area B can be controlled by the external voltage, namely, the simple display of the display panel is realized through the second pixel area B, and the display panel is prevented from being completely black, and the use is prevented from being influenced.
Specifically, the first display device 21 is located in the first pixel area a of the display panel, and the second pixel area B is not required to be provided with a display device to control the liquid crystal inversion of the second pixel area B, but is connected to an external voltage by means of silver paste, a connecting wire, a flexible circuit board and the like, and controls each second pixel area B by the same external voltage. Optionally, when the first pixel area a is displaying normally, the external voltage controls the liquid crystal in the liquid crystal layer 1 in the second pixel area B to not turn over, so that the second pixel area is opaque, i.e. the second pixel area B is not displaying, and when the first pixel area a is unable to display normally, the external voltage controls the liquid crystal layer 1 in the second pixel area B to transmit, i.e. the second pixel area B is displaying.
An electric field for driving the liquid crystal layer 1 to turn over is formed between the first common electrode 23 and the first pixel electrode 22. In general, a common electrode line is further disposed on the array substrate 2, and the common electrode line is connected to the first common electrode 23 at the peripheral edge of the array substrate 2 to supply a constant voltage to the first common electrode 23. The array substrate 2 specifically includes a second substrate 216, a buffer layer 215, a gate insulating layer 214, an interlayer insulating layer 213, a planarizing layer 212, and a passivation layer 211, which are stacked.
The liquid crystal of the liquid crystal layer 1 located in the first pixel area a can be controlled to be turned over by changing the voltage difference between the first pixel electrode 22 and the first common electrode 23, so that the light transmission and display of the first pixel area a can be controlled, and similarly, whether the second pixel area B transmits light or not can be controlled by changing the voltage supplied to the second pixel electrode 25 and the second common electrode 24 by external voltage, specifically, when the voltage on the second pixel electrode 25 is 5V, the voltage on the second common electrode 24 is 0V, the second pixel area B transmits light, when the voltage on the second pixel electrode 25 is 0V, the voltage on the second common electrode 24 is 0V, and the second pixel area B does not transmit light.
In some alternative embodiments, the first display device 21 includes a plurality of thin film transistors, each of which includes a source electrode and a drain electrode, and each of the first pixel electrodes 22 is connected to the drain electrode of each of the thin film transistors in a one-to-one correspondence.
It should be noted that, the thin film transistor attached to the present application is described by taking a top gate structure as an example, and in some other embodiments of the present application, the thin film transistor may also be embodied as a bottom gate structure, which is not particularly limited in the present application.
Specifically, the thin film transistors include a gate electrode electrically connected to the scan line, a source electrode electrically connected to the data line, a drain electrode electrically connected to the first pixel electrode 22, so that when the display panel operates, the on and off of each thin film transistor can be controlled by the scan line, and when the thin film transistor is on, a driving signal on the data line is transmitted to the first pixel electrode 22, so as to realize the display of each first pixel region a.
Referring to fig. 2 and 3, further, the display panel provided in the embodiment of the application further includes a color filter substrate 3, the color filter substrate 3 is located on a side of the liquid crystal layer 1 away from the array substrate 2, the color filter substrate 3 includes a first substrate 31, a color resistor 32 and a black matrix (not shown) disposed on the first substrate 31, and the color resistor 32 is disposed in the first pixel area a.
It can be understood that the color display of the display panel is realized by setting the color resistors 32 of three colors of red, green and blue, and the color resistors 32 are arranged in the first pixel area a, namely, the first pixel area a can realize the color display, and as each second pixel area B is controlled by the same external voltage, only light can be transmitted or not transmitted at the same time, the display color of the display panel is fixed, and then the color resistors 32 are not arranged in the second pixel area B, namely, the second pixel area B emits white light, so that the display panel has higher light transmittance, and only the color resistor 32 of one color of red, green and blue is arranged, so that the second pixel area B emits light with the same color as the set color resistor 32.
The color filter substrate 3 includes a first substrate 31, and the first substrate 31 may be hard, for example, made of glass, and the first substrate 31 may also be flexible, for example, made of resin, which is not particularly limited in this embodiment. The color resist 32 and the black matrix are provided on the first substrate 31. Alternatively, the black matrix may be arranged in a mesh shape, the color resist 32 is located in the through hole area in the mesh shape, and the color resist 32 may be arranged in a block shape or may be arranged in a stripe shape to cover the through hole area in the mesh shape, which is not particularly limited in this embodiment. The black matrix can shield light leakage among pixels, improve contrast ratio and avoid phenomena such as color mixing. Normally, the black matrix is made of a black opaque material.
Referring to fig. 3, in some alternative embodiments, the display device further includes a spacer 4 disposed between the color filter substrate 3 and the array substrate 2, and an orthographic projection of the spacer 4 on the display panel is located in the second pixel area B.
It should be noted that, the spacers 4 are disposed between the color filter substrate 3 and the array substrate 2 to maintain the normal spacing between the color filter substrate 3 and the array substrate 2, and the spacing between the color filter substrate 3 and the array substrate 2 is also referred to as a box thickness, and optionally, the spacers 4 include a main spacer column 41 and a sub spacer column 42, the length of the main spacer column 41 is greater than the length of the sub spacer column 42, and the main spacer column 41 is used to maintain the normal box thickness of the display panel; and the sub-spacer 42 is used to maintain a certain thickness of the case to prevent irreversible deformation when the display panel is subjected to an external force.
Optionally, the spacer 4 has elasticity, can produce certain physical deformation, and the spacer 4 can play certain supporting role, and when the display panel receives the pressing of external force, the spacer 4 can keep the accommodation space between the color filter substrate 3 and the array substrate 2, prevents to influence the distribution of the liquid crystal layer 1 because of the display panel deformation is too big, thereby influences the display quality.
Since the second pixel area B is not displayed when the first pixel area a is displayed, the spacer 4 may be disposed corresponding to the second pixel area B, and specifically, the orthographic projection of the spacer 4 on the display panel is located in the second pixel area B, so as to avoid affecting the display of the first pixel area a.
Referring to fig. 4 to 7, in some alternative embodiments, the first pixel area a includes a first sub-pixel 711, a second sub-pixel 721 and a third sub-pixel 731, the second pixel area B includes a white sub-pixel 741, and the white sub-pixel 741 is disposed between the first sub-pixel 711, the second sub-pixel 721 and the third sub-pixel 731, and optionally, each white sub-pixel 741 is connected to the control unit 6.
It should be noted that, the first sub-pixel 711, the second sub-pixel 721, and the third sub-pixel 731 may be one of three colors of red, yellow, and green, and the shape of the first pixel area a and the number of sub-pixels in the first pixel area a are reasonably configured according to the light color mixing principle, so as to realize color display of the display panel. The second pixel area B includes a white sub-pixel 741, and the white sub-pixel 741 means that the color filter substrate 3 corresponding to the white sub-pixel 741 is not provided with a color resistor 32 of red, yellow, green, and other colors, and can emit white light, and as shown in fig. 5, the white sub-pixel 741 is provided between each of the first sub-pixel 711, the second sub-pixel 721, and the third sub-pixel 731, and specifically means that the first sub-pixel 711, the second sub-pixel 721, and the third sub-pixel 731 are not directly adjacent to each other, but are separated by the white sub-pixel 741, so as to improve uniformity when the first pixel area a or the second pixel area B emits light.
In some other embodiments, the first pixel area a includes a first sub-pixel 711, a second sub-pixel 721, and a third sub-pixel 731, the second pixel area B includes a white sub-pixel 741, and the first sub-pixel 711, the second sub-pixel 721, and the third sub-pixel 731 are adjacently disposed to form the pixel unit 7, as shown in fig. 4, and the white sub-pixel 741 is disposed between the pixel units 7 in the first direction; as shown in fig. 6, or in both the first direction and the second direction, a white subpixel 741 is provided between each pixel unit 7, the first direction being perpendicular to the second direction.
Specifically, the first sub-pixel 711, the second sub-pixel 721 and the third sub-pixel 731 are adjacently arranged along the first direction to form the pixel unit 7, and in the first direction, the white sub-pixels 741 are disposed between the pixel units 7, that is, the pixel units 7 are disposed corresponding to one white sub-pixel 741, so that the number of the white sub-pixels 741 is reduced, and the display quality of the first pixel area a is improved. Alternatively, or in the first direction and the second direction, the white sub-pixels 741 are disposed between each pixel unit 7, and the first direction and the second direction are perpendicular to each other, that is, the white sub-pixels 741 are disposed around each pixel unit 7.
As shown in fig. 7, in addition to the above-described embodiments, in other embodiments, the first pixel region a includes a first sub-pixel 711, a second sub-pixel 721, and a third sub-pixel 731, and the second pixel region B includes a white sub-pixel 741; at least two first sub-pixels 711 are adjacently disposed to form a first sub-pixel group 71, at least two second sub-pixels 721 are adjacently disposed to form a second sub-pixel group 72, at least two third sub-pixels 731 are adjacently disposed to form a third sub-pixel group 73, at least two white sub-pixels 741 are adjacently disposed to form a white sub-pixel group 74, and a white sub-pixel group 74 is provided between the first sub-pixel group 71, the second sub-pixel group 72, and the third sub-pixel group 73.
Specifically, the adjacent three first sub-pixels 711, the adjacent three second sub-pixels 721, and the adjacent three third sub-pixels 731 respectively form the first sub-pixel group 71, the second sub-pixel group 72, and the third sub-pixel group 73, and similarly, the adjacent three white sub-pixels 741 are adjacently disposed to form the white sub-pixel group 74, and the white sub-pixel group 74 is disposed between the first sub-pixel group 71, the second sub-pixel group 72, and the third sub-pixel group 73.
Referring to fig. 8 and 9, an embodiment of the present application further provides a display device, including: the display module 100 is the display module 100 described above; the backlight module 5 is disposed at one side of the display panel of the display module 100, and comprises a backlight driving substrate 51 and light emitting elements 52 arranged on the backlight driving substrate 51 in an array manner; the control part 6 is respectively connected to the display panel and the backlight module 5 in a signal manner, and is used for driving the first pixel area A to display a first display image under a first display condition through the first display device 21, or is used for driving the light emitting element 52 through the backlight driving substrate 51 and driving the second pixel area B to display a second display image under a second display condition.
The control portion 6 specifically includes a main controller 61 and a logic controller 62, the logic controller 62 converts an input signal of the main controller 61 into a signal that can be identified by the display device and sends the signal to a display module and a backlight module of the display device, in an embodiment, the main controller 61 transmits the input signal to the logic controller 62 and respectively transmits the signal to the display module and the backlight module through the logic controller 62, and when a problem occurs in signal transmission between a first pixel area a of the display module and the logic controller 62, the main controller 61 controls a second pixel area B of the display module and the backlight module, so that the second pixel area B displays a second display image.
Alternatively, the external voltage received by the second pixel electrode 25 and the second common electrode 24 may be directly provided by the control portion 6, or an external driving portion may be additionally provided to provide the external voltage, and of course, the external driving portion needs to be connected to the control portion 6 through a signal, and the control portion 6 controls whether to provide the external voltage to the second pixel electrode 25 and the second common electrode 24.
Note that, the light emitting elements 52 are driven by the backlight driving substrate 51 and the second pixel region B is driven to display the second display image under the second display condition, specifically, the light emitting elements 52 at different positions may be driven by the backlight driving substrate 51 to form characters or patterns, that is, the second display image is determined by the light emitting elements 52, in addition, the light transmission at different positions of the second pixel electrode 25 and the second common electrode 24 may be controlled, that is, the light transmission position of the display module 100 may be controlled to determine the second display image, at this time, it is not necessary to control each light emitting element 52, and it is only necessary to make all the light emitting elements 52 emit light as light sources at the same time.
The first display condition specifically refers to a situation that the first display device 21 or the driving chip for controlling the light emitting display of the first pixel area a is not damaged, and in the second display condition, the first display device 21 or the driving chip for controlling the light emitting display of the first pixel area a is damaged, so that the first pixel area a cannot normally display light emission, and at this time, since the second pixel area B is directly driven and controlled by the control part 6, the liquid crystal inversion of the second pixel area B is not affected by the damage of the first display device 21 or the driving chip, and the light emitting element 52 can be driven by the backlight driving substrate 51, and the second pixel area B is driven to display the second display image in the second display condition.
Referring to fig. 10, in some alternative embodiments, the backlight driving substrate 51 includes a switching element 53 for controlling the light emitting elements 52, the switching element 53 and the light emitting elements 52 are disposed on a side of the backlight driving substrate 51 close to the array substrate 2, and the switching element 53 and the light emitting elements 52 are connected in a one-to-one correspondence.
Note that, the switching element 53 may be an N-type or P-type MOS transistor (field effect transistor, metal Oxide Semiconductor) as long as the conduction of the light emitting element 52 can be controlled, and meanwhile, in order to control each light emitting element 52 to display different images, the switching element 53 and the light emitting element 52 are connected in one-to-one correspondence, that is, the conduction and the light emission of one light emitting element 52 are correspondingly controlled by one switching element 53. Alternatively, the light emitting element 52 is a Micro LED (Micro Light Emitting Diode ) or a Mini-LED (Micro light emitting diode). The Micro LED and the Mini-LED have the advantages of small size, high luminous efficiency, low energy consumption and the like, the size of the Micro LED is smaller than 50 mu m, the size of the Mini-LED is smaller than 100 mu m, and the figures and the patterns can be clearly displayed on a smaller display panel.
Referring to fig. 11, an embodiment of the present application further provides a driving method of a display device, which is applied to the display device, including
S110: when the display device is in the first display condition, the control section 6 inputs a pixel driving voltage to the array substrate 2 to cause the first pixel region a to display a first display image;
s120: when the display device is in the second display condition, the control section 6 inputs the second backlight voltage and the second external driving voltage to the backlight driving substrate 51 and the second pixel electrode 25, the second common electrode 24, respectively, to cause the second pixel region B to display the second display image.
In the step S110, the control unit 6 inputs the pixel driving voltage to the array substrate 2 under the first display condition to enable the first pixel area a to display the first display image, that is, the first pixel area a can display normally, at this time, in order to avoid interference of the second pixel area B on the display of the first pixel area a, the second pixel area B may not display the image, specifically, the first external driving voltage is input to the second pixel electrode 25 and the second common electrode 24, so as to control the liquid crystal of the second pixel area B not to be turned over, so that the second pixel area B is opaque.
In order to achieve switching between the first display condition and the second display condition of the display device, in some alternative embodiments, the method further includes determining, by the control section 6, whether the first pixel area a of the display device is capable of displaying the first display image; when the first pixel area a of the display device cannot display the first display image, the control section 6 controls the display device to switch from the first display condition to the second display condition.
Specifically, whether the first pixel region a of the display device is capable of displaying the first display image may be detected by an external detection device, for example, whether the received signal of the first pixel region a of the display device is normal or whether the voltage current of the first display device 21 of the first pixel region a is normal may be detected by a signal detector, a current detector, and when it is detected that the first pixel region a of the display device is incapable of displaying the first display image, the control section 6 controls the display device to switch from the first display condition to the second display condition, that is, to drive the light emitting element 52 to emit light via the backlight driving substrate 51, and to drive the second pixel region B to display the second display image under the second display condition.
The application also provides a vehicle-mounted display system which comprises the display device.
The vehicle-mounted display system can be used for displaying vehicle running information such as running speed, oil quantity and the like in the form of color images such as bar charts and the like with different colors in practical application, and when the first pixel area A of the display device cannot normally display, the backlight module and the control part 6 can enable the second pixel area B to carry out simple digital display on key information such as speed, oil quantity and the like of the running of the vehicle.
In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present application, and they should be included in the scope of the present application.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
Claims (13)
1. A display device, comprising:
display module, include: a display panel having a plurality of first pixel regions and a plurality of second pixel regions distributed in an array; the display panel comprises an array substrate and a liquid crystal layer which are sequentially stacked along the light emitting direction, and a plurality of first display devices are arranged on the array substrate; the array substrate further comprises a first pixel electrode and a first public electrode which are arranged corresponding to the first pixel area, and a second pixel electrode and a second public electrode which are arranged corresponding to the second pixel area, wherein the first pixel electrode in each first pixel area is electrically connected with the first display device, and the second pixel electrode and the second public electrode are connected with external voltage;
the backlight module is arranged on one side of the display panel of the display module and comprises a backlight driving substrate and light-emitting elements arranged on the backlight driving substrate in an array manner;
the control part is respectively connected with the display panel and the backlight module in a signal manner and is used for driving the first pixel area to display a first display image under a first display condition through the first display device or driving the light-emitting element through the backlight driving substrate and driving the second pixel area to display a second display image under a second display condition; the first display condition is that the first display device or the driving chip for controlling the first pixel area to emit light and display is not damaged, and the second display condition is that the first display device or the driving chip for controlling the first pixel area to emit light and display is damaged.
2. The display apparatus according to claim 1, wherein the first display device includes a plurality of thin film transistors, each of the thin film transistors includes a source electrode and a drain electrode, and each of the first pixel electrodes is connected to the drain electrode of each of the thin film transistors in a one-to-one correspondence.
3. The display device according to claim 1, further comprising a color filter substrate, the color filter substrate being located on a side of the liquid crystal layer away from the array substrate, the color filter substrate comprising a first substrate, and a color resistor and a black matrix disposed on the first substrate, the color resistor being disposed in the first pixel region.
4. A display device according to claim 3, further comprising a spacer disposed between the color filter substrate and the array substrate, wherein an orthographic projection of the spacer on the display panel is located in the second pixel region.
5. The display device according to claim 1, wherein the first pixel region includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, the second pixel region includes a white sub-pixel, and the white sub-pixel is disposed between every two of the first sub-pixel, the second sub-pixel, and the third sub-pixel.
6. The display device according to claim 1, wherein the first pixel region includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, the second pixel region includes a white sub-pixel, the first sub-pixel, the second sub-pixel, and the third sub-pixel are adjacently disposed to form a pixel unit, and the white sub-pixel is disposed between the pixel units in a first direction;
or in the first direction and the second direction, the white sub-pixels are arranged between the pixel units, and the first direction is perpendicular to the second direction.
7. The display device according to claim 1, wherein the first pixel region includes a first subpixel, a second subpixel, and a third subpixel, and the second pixel region includes a white subpixel;
the at least two first sub-pixels are adjacently arranged to form a first sub-pixel group, the at least two second sub-pixels are adjacently arranged to form a second sub-pixel group, the at least two third sub-pixels are adjacently arranged to form a third sub-pixel group, the at least two white sub-pixels are adjacently arranged to form a white sub-pixel group, and the white sub-pixel group is arranged among the first sub-pixel group, the second sub-pixel group and the third sub-pixel group.
8. The display device according to claim 1, wherein the backlight driving substrate includes a switching element for controlling the light emitting elements, the switching element and the light emitting elements are provided on a side of the backlight driving substrate close to the array substrate, and the switching element and the light emitting elements are connected in one-to-one correspondence.
9. The display device according to claim 1, wherein the light emitting element is a micro light emitting diode or a compact light emitting diode.
10. A driving method of a display device, which is applied to the display device of any one of claims 1 to 9,
when the display device is in a first display condition, the control section inputs a pixel driving voltage to the first pixel electrode and a first common electrode to cause the first pixel region to display the first display image;
when the display device is in a second display condition, the control part inputs a second backlight voltage and a second external driving voltage to the backlight driving substrate and the second pixel electrode, the second common electrode, respectively, so that the second pixel region displays a second display image.
11. The driving method according to claim 10, further comprising inputting a first external driving voltage to the second pixel electrode and the second common electrode so that the second pixel region does not display an image when the display device is in a first display condition.
12. The driving method according to claim 10, further comprising judging, by the control portion, whether the first pixel region of the display device can display the first display image;
the control section controls the display device to switch from the first display condition to the second display condition when the first pixel region of the display device is unable to display the first display image.
13. An in-vehicle display system comprising the display device according to any one of claims 1 to 9.
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| CN1612197A (en) * | 2003-10-31 | 2005-05-04 | 精工爱普生株式会社 | Electro-optical device, method of manufacturing the same, and electronic apparatus |
| CN110361899A (en) * | 2019-06-27 | 2019-10-22 | 厦门天马微电子有限公司 | A kind of display device |
| CN110412798A (en) * | 2019-06-17 | 2019-11-05 | 上海天马微电子有限公司 | Display panel and display device |
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| KR20010060816A (en) * | 1999-12-28 | 2001-07-07 | 박종섭 | Tft-lcd |
| CN1612197A (en) * | 2003-10-31 | 2005-05-04 | 精工爱普生株式会社 | Electro-optical device, method of manufacturing the same, and electronic apparatus |
| CN110412798A (en) * | 2019-06-17 | 2019-11-05 | 上海天马微电子有限公司 | Display panel and display device |
| CN110361899A (en) * | 2019-06-27 | 2019-10-22 | 厦门天马微电子有限公司 | A kind of display device |
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