CN111624794A - Display module, display device, driving method and vehicle-mounted display system - Google Patents

Display module, display device, driving method and vehicle-mounted display system Download PDF

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Publication number
CN111624794A
CN111624794A CN202010601544.9A CN202010601544A CN111624794A CN 111624794 A CN111624794 A CN 111624794A CN 202010601544 A CN202010601544 A CN 202010601544A CN 111624794 A CN111624794 A CN 111624794A
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pixel
display
sub
display device
electrode
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CN202010601544.9A
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CN111624794B (en
Inventor
王丽花
马从华
孙晓平
东强
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Shanghai Tianma Microelectronics Co Ltd
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Shanghai Tianma Microelectronics Co Ltd
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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
    • 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
    • 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
    • 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
    • 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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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention discloses a display module, a display device, a driving method and a vehicle-mounted display system, wherein the display module comprises: the display panel is provided with a plurality of first pixel areas and a plurality of second pixel areas which are distributed in an array; the display panel comprises an array substrate and a liquid crystal layer which are sequentially stacked along a light emergent direction, wherein a plurality of first display devices are arranged on the array substrate; the array substrate further comprises a first pixel electrode and a first common electrode which are arranged corresponding to the first pixel areas, and a second pixel electrode and a second common electrode which are arranged corresponding to the second pixel areas, 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 common electrode are connected with the same external voltage. When the first display device or other parts of the display panel damage and lead to the first pixel area of the display panel not displaying normally, the simple display of the display module is realized through the second pixel area, and the display module is prevented from being completely black, cannot display and influences use.

Description

Display module, display device, driving method and vehicle-mounted display system
Technical Field
The invention belongs to the technical field of electronic products, and particularly relates to a display module, 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, once a display screen is blacked, the information cannot be displayed in real time, and great potential safety hazards are generated during vehicle running.
Therefore, a new display module, a display device, a driving method thereof, and a vehicle-mounted display system are needed.
Disclosure of Invention
The embodiment of the invention provides a display module, a display device, a driving method and a vehicle-mounted display system, which are used for realizing simple display of the display module through a second pixel area and avoiding the influence on use caused by the fact that the display module is completely black and cannot display.
In a first aspect, an embodiment of the present invention provides a display module, including: the display panel is provided with a plurality of first pixel areas and a plurality of second pixel areas which are distributed in an array; the display panel comprises an array substrate and a liquid crystal layer which are sequentially stacked along a light emitting direction, wherein a plurality of first display devices are arranged on the array substrate; the array substrate further comprises a first pixel electrode and a first common electrode which are arranged corresponding to the first pixel area, and a second pixel electrode and a second common 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 common electrode are connected with the same external voltage.
In a second aspect, an embodiment of the present invention provides a display device, including: the display module is used for displaying the image; 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 which are arranged on the backlight driving substrate in an array manner; and the control part is respectively in signal connection with the display panel and the backlight module 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.
In a third aspect, an embodiment of the present invention provides a driving method of a display device, which is applied to the display device described above, when the display device is in a first display condition, the control portion inputs a pixel driving voltage to the array substrate to make the first pixel region display a first display image; when the display device is in a second display condition, the control part respectively inputs a second backlight voltage and a second external driving voltage to the backlight driving substrate and the external driving board so that the second pixel region displays a second display image.
In a fourth aspect, an embodiment of the present invention provides an on-vehicle display system, including the above display device.
Compared with the prior art, the display module provided by the embodiment of the invention comprises a display panel, wherein the display panel comprises an array substrate and a liquid crystal layer which are sequentially stacked along the light emitting direction, a first pixel electrode in each first pixel area is electrically connected with a first display device, a second pixel electrode and a 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, so that when the first pixel area of the display panel cannot normally display due to the damage of the first display device or other parts of the display panel, the liquid crystal layer of the second pixel area can be controlled by the external voltage, namely, the simple display of the display module is realized through the second pixel area, and the complete black screen of the display module is avoided, cannot be displayed, and influences the use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below 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 front view of a display module according to a first embodiment of the invention;
FIG. 2 is a front view of a display module according to a second embodiment of the present invention;
FIG. 3 is a front view of a display module according to a third embodiment of the present invention;
FIG. 4 is a schematic diagram of a pixel arrangement according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of a pixel arrangement according to a second embodiment of the present invention;
FIG. 6 is a schematic diagram of a pixel arrangement according to a third embodiment of the present invention;
FIG. 7 is a schematic diagram of a pixel arrangement according to a fourth embodiment of the present invention;
fig. 8 is a schematic connection diagram of a display device according to an embodiment of the present invention;
fig. 9 is a front view of a display device provided according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a backlight module according to an embodiment of the invention;
fig. 11 is a flowchart of a driving method of a display device according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention 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 present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 identical elements in a process, method, article, or apparatus that comprises the element.
For better understanding of the present invention, the display module, the display device and the driving method thereof, and the vehicle-mounted display system according to the embodiments of the present invention will be described in detail with reference to fig. 1 to 10.
Referring to fig. 1 to 2, an embodiment of the invention provides a display module 100, including: the display panel is provided with a plurality of first pixel areas A and a plurality of second pixel areas B which are 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 first pixel electrodes 22 and first common electrodes 23 which are arranged corresponding to first pixel areas A, second pixel electrodes 25 and second common electrodes 24 which are arranged corresponding to second pixel areas B, the first pixel electrodes 22 in the first pixel areas A are electrically connected with the first display devices 21, and the second pixel electrodes 25 and the second common electrodes 24 are connected with external voltage.
The display module 100 provided by the embodiment of the invention 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 an 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, while the display light transmission of the second pixel area B of the display panel is not controlled by the display panel but controlled by the external voltage, therefore, when the first display device 21 or other parts of the display panel are damaged to cause that the first pixel area A of the display panel can not normally display, 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 by the second pixel area B, the display panel is prevented from being completely black, cannot display and influences use.
Specifically, the first display device 21 is located in the first pixel area a of the display panel, and the display device is not required to be arranged in the second pixel area B to control the liquid crystal inversion of the second pixel area B, but the first display device is connected with an external voltage through silver paste, a connecting wire, a flexible circuit board and the like, and each second pixel area B is controlled through the same external voltage. Optionally, when the first pixel area a displays normally, the external voltage controls the liquid crystal in the liquid crystal layer 1 in the second pixel area B not to be turned over, so that the second pixel area B does not transmit light, that is, the second pixel area B does not display, and when the first pixel area a cannot display normally, the external voltage controls the liquid crystal layer 1 in the second pixel area B to transmit light, that is, the second pixel area B displays.
Note that an electric field for driving the liquid crystal layer 1 to turn 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 provide 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 planarization layer 212, and a passivation layer 21, which are stacked.
The liquid crystal of the liquid crystal layer 1 in the first pixel region a can be controlled to turn over by changing the voltage difference between the first pixel electrode 22 and the first common electrode 23, and then the light transmission and display of the first pixel region a are controlled, and similarly, the voltage transmitted by the external voltage to the second pixel electrode 25 and the second common electrode 24 is changed to control whether the second pixel region B transmits light, specifically, when the voltage on the second pixel electrode 25 is 5V, and the voltage on the second common electrode 24 is 0V, the second pixel region B transmits light, when the voltage on the second pixel electrode 25 is 0V, and the voltage on the second common electrode 24 is 0V, the second pixel region B does not transmit light.
In some alternative embodiments, the first display device 21 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 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 in the attached application is described by taking a top gate structure as an example, in some other embodiments of the application, the thin film transistor may also be embodied as a bottom gate structure, and the application is not particularly limited thereto.
Specifically, the thin film transistor includes a gate electrode, a source electrode, a drain electrode, and a semiconductor layer, the gate electrode is electrically connected to the scan line, the source electrode is electrically connected to the data line, and the drain electrode is electrically connected to the first pixel electrode 22, so that when the display panel operates, the thin film transistor can be controlled to be turned on and off by the scan line, and when the thin film transistor is turned on, a driving signal on the data line is transmitted to the first pixel electrode 22, so as to implement display of each first pixel region a.
Referring to fig. 2 and fig. 3, further, the display panel according to the embodiment of the invention 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, and a color resistor 32 and a black matrix (not shown in the figure) 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 color groups of three colors of red, green and blue, the color resistors 32 are arranged in the first pixel area a, that is, the first pixel area a can realize the color display, because each second pixel area B is controlled by the same external voltage, only light transmission or light non-transmission is realized at the same time, the display color of the display panel is fixed, and further the color resistors 32 are not arranged in the second pixel areas B, that is, the second pixel areas B emit white light, and have higher light transmittance, or only the color resistors 32 of one color of red, green and blue are arranged, so that the second pixel areas B emit light with the same color as the color resistors 32.
The color filter substrate 3 includes a first substrate 31, the first substrate 31 may be rigid, such as made of glass, and the first substrate 31 may also be flexible, such as made of resin, which is not particularly limited in this embodiment. The color resistors 32 and the black matrix are disposed on the first substrate 31. Optionally, the black matrix may be arranged in a mesh shape, the color resistor 32 is located in a through hole region in the mesh shape, and the color resistor 32 may be arranged in a block shape or a strip shape to cover the through hole region in the mesh shape, which is not limited in this embodiment. The black matrix can shield light leakage among pixels, improve contrast, and avoid phenomena such as color mixing. In general, the black matrix is made of a black opaque material.
Referring to fig. 3, in some alternative embodiments, a spacer 4 is further included between the color filter substrate 3 and the array substrate 2, and an orthogonal projection of the spacer 4 on the display panel is located in the second pixel region B.
It should be noted that the spacer 4 is disposed between the color filter substrate 3 and the array substrate 2 to maintain a 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, optionally, the spacer 4 includes a main spacer 41 and an auxiliary spacer 42, the length of the main spacer 41 is greater than that of the auxiliary spacer 42, and the main spacer 41 is to maintain the normal box thickness of the display panel; and the sub spacer 42 serves to maintain a certain cell thickness 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 display panel received the pressing of external force, the spacer 4 can keep the accommodation space between colored filter substrate 3 and the array substrate 2, thereby prevent to influence the distribution of liquid crystal layer 1 because of display panel deformation is too big, thereby influence the display quality.
Since the second pixel region B is not displayed when the first pixel region a is displayed, the spacer 4 may be disposed corresponding to the second pixel region B, specifically, the orthographic projection of the spacer 4 on the display panel is located in the second pixel region B, so as to avoid affecting the display of the first pixel region a.
Referring to fig. 4 to fig. 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, a 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, the white sub-pixels 741 are connected to the control portion 6.
The first sub-pixel 711, the second sub-pixel 721 and the third sub-pixel 731 can be respectively one of three colors of red, yellow and green, and the shape of the first pixel region a and the number of sub-pixels in the first pixel region a are reasonably arranged according to the principle of light mixing, so as to realize color display of the display panel. The second pixel region B includes a white sub-pixel 741, and the white sub-pixel 741 specifically refers to that no color resist 32 with colors of red, yellow, green, and the like is disposed on the corresponding color filter substrate 3, and can emit white light, as shown in fig. 5, a white sub-pixel 741 is disposed between every two of the first sub-pixel 711, the second sub-pixel 721, and the third sub-pixel 731, specifically, 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 between every two of the first sub-pixel 711, the second sub-pixel 721, and the third sub-pixel 731, so as to improve uniformity of light emission in the first pixel region a or the second pixel region B.
In some other embodiments, the first pixel region a includes a first sub-pixel 711, a second sub-pixel 721 and a third sub-pixel 731, the second pixel region B includes a white sub-pixel 741, the first sub-pixel 711, the second sub-pixel 721 and the third sub-pixel 731 are adjacently disposed to form pixel units 7, as shown in fig. 4, the white sub-pixel 741 is disposed between the pixel units 7 in the first direction; as shown in fig. 6, or in the first direction and the second direction, a white sub-pixel 741 is disposed between each pixel unit 7, and the first direction is perpendicular to the second direction.
Specifically, the first sub-pixel 711, the second sub-pixel 721 and the third sub-pixel 731 are arranged adjacently along the first direction to form the pixel unit 7, and the white sub-pixel 741 is disposed between the pixel units 7 in the first direction, that is, the pixel unit 7 is 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, white sub-pixels 741 are disposed between the pixel units 7, and the first direction and the second direction are perpendicular to each other, that is, the white sub-pixels 741 are disposed around the pixel units 7.
As shown in fig. 7, in addition to the above embodiments, in some 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 arranged to form a first sub-pixel group 71, at least two second sub-pixels 721 are adjacently arranged to form a second sub-pixel group 72, at least two third sub-pixels 731 are adjacently arranged to form a third sub-pixel group 73, at least two white sub-pixels 741 are adjacently arranged to form a white sub-pixel group 74, and the white sub-pixel group 74 is arranged among 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 a first sub-pixel group 71, a second sub-pixel group 72 and a third sub-pixel group 73, similarly, the adjacent three white sub-pixels 741 are adjacently disposed to form a white sub-pixel group 74, and the white sub-pixel group 74 is disposed between every two of 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 invention further provides a display device, including: the display module 100 is the display module 100; the backlight module 5 is disposed on one side of the display panel of the display module 100, and includes a backlight driving substrate 51 and light emitting elements 52 arranged in an array on the backlight driving substrate 51; the control portion 6, the control portion 6 is respectively connected to the display panel and the backlight module 5 by signals, and is used for driving the first pixel region a to display the first display image under the first display condition through the first display device 21, or used for driving the light emitting element 52 through the backlight driving substrate 51 and driving the second pixel region B to display the second display image under the second display condition.
The control unit 6 specifically includes a main controller 61 and a logic controller 62, and converts an input signal of the main controller 61 into a signal that can be recognized by the display device through the logic controller 62 and sends the signal to the display module and the backlight module of the display device, in an embodiment, the main controller 61 transmits the input signal to the logic controller 62 and 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 the first pixel area a of the display module and the logic controller 62, the main controller 61 controls the 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 unit 6, or an external driving unit is additionally provided to provide the external voltage, of course, the external driving unit also needs to be in signal connection with the control unit 6, and the control unit 6 controls whether to provide the external voltage to the second pixel electrode 25 and the second common electrode 24.
It should be noted that, the backlight driving substrate 51 drives the light emitting elements 52 and drives the second pixel region B to display the second display image under the second display condition, specifically, the backlight driving substrate 51 drives the light emitting elements 52 at different positions to form characters or patterns, that is, the second display image is determined by the light emitting elements 52, in addition, the voltages of the second pixel electrode 25 and the second common electrode 24 can be controlled to drive the different positions of the second pixel region B to transmit light, that is, the light transmitting position of the display module 100 is controlled to determine the second display image, at this time, it is not necessary to control each light emitting element 52, and all the light emitting elements 52 can emit light at the same time as the light source.
The first display condition specifically means that the first display device 21 or the driving chip and other devices for controlling the first pixel area a to emit light for display are not damaged, and the second display condition is that the first display device 21 or the driving chip and other devices for controlling the first pixel area a to emit light for display are damaged, so that the first pixel area a cannot normally display light for emission.
Referring to fig. 10, in some alternative embodiments, the backlight driving substrate 51 includes a switch device 53 for controlling the light emitting devices 52, the switch device 53 and the light emitting devices 52 are disposed on one side of the backlight driving substrate 51 close to the array substrate 2, and the switch devices 53 are connected to the light emitting devices 52 in a one-to-one correspondence manner.
The switching element 53 may be specifically an N-type or P-type MOS transistor (field effect transistor), as long as the switching element can control the conduction of the light emitting elements 52, and in order to control each light emitting element 52 to display different images, the switching elements 53 are connected to the light emitting elements 52 in a one-to-one correspondence, that is, one switching element 53 controls the conduction of one light emitting element 52 to emit light. Optionally, the Light Emitting element 52 is a Micro LED (Micro Light Emitting Diode) or a Mini-LED (small 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 numbers and patterns can be clearly displayed on a small display panel.
Referring to fig. 11, an embodiment of the invention further provides a driving method of a display device, which is applied to the display device and includes
S110: when the display device is in the first display condition, the control part 6 inputs a pixel driving voltage to the array substrate 2 to make the first pixel area a 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 step S110, when the display device is in the first display condition, the control portion 6 inputs the pixel driving voltage to the array substrate 2 to enable the first pixel area a to display the first display image, that is, the first pixel area a can normally display, at this time, in order to avoid the second pixel area B interfering with 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, and the liquid crystal in the second pixel area B is controlled not to turn over, so that the second pixel area B is not transparent.
In order to realize the switching between the first display condition and the second display condition of the display device, in some optional embodiments, the method further includes determining, by the control portion 6, whether the first pixel area a of the display device can display 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, it is possible to detect whether the first pixel area a of the display device is capable of displaying the first display image by an external detection device, for example, whether the received signal of the first pixel area a of the display device is normal by a signal detector or whether the voltage current of the first display device 21 of the first pixel area a is normal by a voltage detector or a current detector, and when it is detected that the first pixel area 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 by the backlight driving substrate 51 and to drive the second pixel area B to display the second display image under the second display condition.
The invention 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 a form of color images with different colors such as a histogram and the like in practical application, and when the first pixel area a of the display device cannot be normally displayed, the second pixel area B can be enabled to carry out simple digital display on key information of vehicle running such as speed, oil quantity and the like through the backlight module and the control part 6.
As will be apparent to those skilled in the art, 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, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention 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, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.

Claims (14)

1. A display module, comprising:
the display panel is provided with a plurality of first pixel areas and a plurality of second pixel areas which are distributed in an array;
the display panel comprises an array substrate and a liquid crystal layer which are sequentially stacked along a light emitting direction, wherein a plurality of first display devices are arranged on the array substrate;
the array substrate further comprises a first pixel electrode and a first common electrode which are arranged corresponding to the first pixel area, and a second pixel electrode and a second common 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 common electrode are connected with the same external voltage.
2. The display module of claim 1, wherein the first display device comprises a plurality of thin film transistors, each thin film transistor comprises a source electrode and a drain electrode, and each first pixel electrode is connected with the drain electrode of each thin film transistor in a one-to-one correspondence manner.
3. The display device according to claim 1, further comprising a color filter substrate on a side of the liquid crystal layer away from the array substrate, wherein the color filter substrate comprises a first substrate, and a color resistor and a black matrix disposed on the first substrate, and the color resistor is disposed in the first pixel region.
4. The display module according to claim 3, further comprising a spacer disposed between the color filter substrate and the array substrate, wherein an orthogonal projection of the spacer on the display panel is located in the second pixel region.
5. The display module according to claim 1, wherein the first pixel region comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the second pixel region comprises 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 module according to claim 1, wherein the first pixel region comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the second pixel region comprises a white sub-pixel, the first sub-pixel, the second sub-pixel and the third sub-pixel are adjacently arranged to form a pixel unit, and the white sub-pixel is arranged between the pixel units in the 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 module of claim 1, wherein the first pixel region comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, and the second pixel region comprises a white sub-pixel;
at least two first sub-pixels are adjacently arranged to form a first sub-pixel group, at least two second sub-pixels are adjacently arranged to form a second sub-pixel group, at least two third sub-pixels are adjacently arranged to form a third sub-pixel group, 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. A display device, comprising:
a display module according to any one of claims 1 to 7;
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 which are arranged on the backlight driving substrate in an array manner;
and the control part is respectively in signal connection with the display panel and the backlight module 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.
9. The display device according to claim 8, wherein the backlight driving substrate includes a switching element for controlling the light emitting elements, the switching element and the light emitting elements are disposed 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 a one-to-one correspondence.
10. The display device according to claim 8, wherein the light-emitting element is a micro light-emitting diode or a mini light-emitting diode.
11. A driving method of a display device, applied to the display device according to any one of claims 10 to 12,
when the display device is in a first display condition, the control part inputs a pixel driving voltage to the first pixel electrode and the first common electrode to enable the first pixel area 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 and the second common electrode respectively so as to enable the second pixel area to display a second display image.
12. The driving method according to claim 11, further comprising inputting a first external driving voltage to the second pixel electrode and the second common electrode when the display device is in the first display condition, so that the second pixel region does not display an image.
13. The driving method according to claim 11, further comprising determining, by the control portion, whether the first display image can be displayed in the first pixel region of the display device;
the control section controls the display apparatus to switch from the first display condition to the second display condition when the first pixel region of the display apparatus cannot display the first display image.
14. An in-vehicle display system characterized by comprising the display device of any one of claims 11 to 13.
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