CN111028762B - Display device - Google Patents
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- CN111028762B CN111028762B CN201911419167.0A CN201911419167A CN111028762B CN 111028762 B CN111028762 B CN 111028762B CN 201911419167 A CN201911419167 A CN 201911419167A CN 111028762 B CN111028762 B CN 111028762B
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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Abstract
The invention discloses a display device, comprising: the display area comprises a first display area and a second display area; the display device also comprises a first driving chip, a second driving chip and a controller; each pixel unit of the first display area and each pixel unit of the second display area are connected with the first driving chip; each pixel unit of the second display area is connected with the second driving chip; the controller is respectively connected with the first driving chip and the second driving chip; the controller can drive each pixel unit of the first display area and the second display area to display through the first driving chip; the controller can also acquire the working state of the first driving chip and/or the first display area, and when the working state of the first driving chip and/or the first display area is abnormal, the controller controls the first driving chip to stop driving, and drives each pixel unit of the second display area to display through the second driving chip. The technical scheme provided by the invention can solve the problems that the vehicle-mounted display device has no fault-tolerant function and has poor reliability.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device.
Background
With the progress of society and the continuous development of technology, display devices are increasingly applied to vehicle displays or industrial instrument displays. For example, in the on-vehicle display, the working environment of the on-vehicle display device is quite special, and the current on-vehicle display device is used for displaying information such as vehicle speed, oil amount and the like, which are very important for users.
The existing vehicle-mounted display device only has a display screen with a single function, if a driving chip or a display panel is abnormal in the using process, the whole display screen can not display, the fault-tolerant function is avoided, the reliability of the vehicle-mounted display device is poor, and the driving and safety of a user are influenced.
Disclosure of Invention
The embodiment of the invention provides a display device, which aims to solve the problems that a vehicle-mounted display device in the prior art has no fault-tolerant function and is poor in reliability.
An embodiment of the present invention provides an organic light emitting display panel, including: a display area comprising a first display area and a second display area; the display device also comprises a first driving chip, a second driving chip and a controller;
each pixel unit of the first display area and each pixel unit of the second display area are electrically connected with the first driving chip; each pixel unit of the second display area is electrically connected with the second driving chip;
the controller is electrically connected with the first driving chip and the second driving chip respectively;
the controller is used for driving each pixel unit of the first display area and the second display area to display through the first driving chip; the controller is further configured to obtain a working state of the first driving chip and/or the first display area, control the first driving chip to stop driving when the working state of the first driving chip and/or the first display area is abnormal, and drive each pixel unit of the second display area to display preset information through the second driving chip.
In the invention, the display area of the display device comprises a first display area and a second display area, each pixel unit of the first display area and each pixel unit of the second display area are electrically connected with the first driving chip, so that the first driving chip can drive the whole display area to display, each pixel unit of the second display area is electrically connected with the second driving chip, and the second driving chip can independently drive the second display area to display. The embodiment of the invention provides a fault-tolerant design framework for display, wherein the second display area is independently controlled, and when the first display area or the first driving chip for controlling the first display area and the second display area has a problem, the second display area is independently displayed to replace the first display area to work. The reliability of the display device can be enhanced, the problem that the display screen cannot display data timely due to scrapping is avoided, the user can be guaranteed to timely and accurately acquire preset information displayed on the screen in the fields such as vehicle-mounted display and the like with high requirements for the display reliability, and the driving safety of the user is guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another display device provided in an embodiment of the invention;
FIG. 3 is a schematic diagram of another display device according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another display device provided in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another display device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
An embodiment of the present invention provides a display device, including: the display area comprises a first display area and a second display area; the display device also comprises a first driving chip, a second driving chip and a controller;
each pixel unit of the first display area and each pixel unit of the second display area are electrically connected with the first driving chip; each pixel unit of the second display area is electrically connected with the second driving chip;
the controller is electrically connected with the first driving chip and the second driving chip respectively;
the controller is used for driving each pixel unit of the first display area and the second display area to display through the first driving chip; the controller is further used for obtaining the working state of the first driving chip and/or the first display area, controlling the first driving chip to stop driving when the working state of the first driving chip and/or the first display area is abnormal, and driving each pixel unit of the second display area to display preset information through the second driving chip.
In the embodiment of the invention, the display area of the display device comprises a first display area and a second display area, each pixel unit of the first display area and each pixel unit of the second display area are electrically connected with the first driving chip, so that the first driving chip can drive the whole display area to display, each pixel unit of the second display area is electrically connected with the second driving chip, and the second driving chip can independently drive the second display area to display. The embodiment of the invention provides a fault-tolerant design framework for display, wherein the second display area is independently controlled, and when the first display area or the first driving chip for controlling the first display area and the second display area has a problem, the second display area is independently displayed to replace the first display area to work. The reliability of the display device can be enhanced, the problem that the display screen cannot display data timely due to scrapping is avoided, the user can be guaranteed to timely and accurately acquire preset information displayed on the screen in the fields such as vehicle-mounted display and the like with high requirements for the display reliability, and the driving safety of the user is guaranteed.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention, and as shown in fig. 1, the display device includes a display area 11, the display area 11 is divided into a first display area 111 and a second display area 112, and the display device further includes a first driving chip 12, a second driving chip 13, and a controller 18.
As shown in fig. 1, the display area 11 includes pixel units 14 arranged in an array, and optionally, the pixel units 14 may include a red pixel unit, a green pixel unit, and a blue pixel unit, or the pixel units 14 may include a red pixel unit, a green pixel unit, a blue pixel unit, and a white pixel unit, and the color types included in the pixel units 14 are not limited in this embodiment. The pixel unit 14 in the first display area 111 is electrically connected to the first driving chip 12, and can acquire a driving signal of the first driving chip 12, so that the display can be performed by the driving of the first driving chip 12, and the pixel unit 14 in the second display area 112 is electrically connected to the first driving chip 12, and can acquire a driving signal of the first driving chip 12, so that the display can be performed by the driving of the first driving chip 12. That is, the first driving chip 12 can simultaneously drive the first display region 111 and the second display region 112 for image display. Each pixel unit 14 of the second display area 112 is further electrically connected to the second driving chip 13, and obtains a driving signal of the second driving chip 13, so that the display can be performed under the driving of the second driving chip 13, that is, the second driving chip 13 can separately drive the second display area 112 for image display. Alternatively, referring to fig. 1, the display area 11 includes scan lines 15 extending in the row direction X and data lines 16 extending in the column direction Y, where the scan lines 15 and the data lines 16 intersect to define the positions of the pixel units 14. The scan lines 15 receive scan signals outputted from the gate driving circuit 17, the data lines 16 receive data signals outputted from the first driving chip 12 or the second driving chip 13, the first driving chip 12 can provide data signals to the data lines 16 of the entire display region 11, and the second driving chip 13 can provide data signals only to the data lines 16 passing through the second display region 112. Each scanning line 15 corresponds to a row of pixel units 14, each data line 16 corresponds to a column of pixel units 14, the scanning lines 15 scan the pixel units 14 row by row, when a certain pixel unit 14 needs to be driven, the scanning line 15 scans to the row of the pixel unit 14, and the pixel unit 14 is driven through the data line 16 of the column of the pixel unit 14, so that the pixel unit 14 emits light.
The controller 18 may be electrically connected to the first driving chip 12 and the second driving chip 13, respectively, and may control the operating states of the first driving chip 12 and the second driving chip 13. For example, the controller 18 may control the first driving chip 12 and/or the second driving chip 13 to start driving the pixel unit 14, or stop driving, etc. For example, in an in-vehicle display application, the controller 18 may be an in-vehicle central controller. Optionally, the controller 18 can provide operating power for the entire display device, in addition to controlling the first driving chip 12 and the second driving chip 13 respectively. In this embodiment, the controller 18 may be configured to control the first driving chip 12 to drive each pixel unit 14 in the first display area 111 and the second display area 112 to display, that is, the controller 18 may control the first driving chip 12 to drive the whole display area 11 to display, if the vehicle-mounted device is in the vehicle-mounted field, at this moment, the whole display area 11 may display important information such as vehicle speed and engine status information, and in addition, may also display an instrument panel, and personalized information such as other pictures and videos. If in the field of industrial instruments, the whole display area 11 can display important information such as motor rotation speed, voltage value, current value and the like, and can also display personalized information such as equipment parameters, power-on time, operation tutorial videos and the like.
The controller 18 may further obtain an operating state of the first driving chip 12, or an operating state of the first display area 111, or obtain operating states of the first driving chip 12 and the first display area 111 simultaneously, and when an operating state of at least one of the first driving chip 12 and the first display area 111 is abnormal, the controller 18 may control the first driving chip 12 to stop driving, and drive the pixel units 14 in the second display area 112 through the second driving chip 13, so that the second display area 112 displays preset information, where the preset information may include the important information. Referring to fig. 1, it should be noted that when the display is performed only through the second display area 112, the enable signal needs to be sent to the gate driving circuit 17 through the second driving chip 13, so that the gate driving circuit 17 inputs the scan signal only to the scan line 15 passing through the second display area 112 to avoid driving the pixel unit 14 of the first display area 111. In a normal operating state, the controller 18 drives the entire display area 11 through the first driving chip 12 to display, but when the first driving chip 12 or the first display area 111 fails, the controller 18 controls the second display area 112 to display important information only through the second driving chip 13 as an emergency measure for an emergency. The operating state may include an operating voltage, an operating current, an operating temperature, and the like of the first driving chip 12, and may also include parameters such as display brightness, flicker, display, and the like of the first display region 111, and when the parameters exceed a safety threshold, it may be determined that the operating state is abnormal. In this embodiment, a scheme that the first driving chip 12 drives the whole display panel may be used as a conventional scheme, a situation that the second driving chip 13 drives the second display area 112 to display alone may be used as a fault-tolerant scheme, the display is performed through the conventional scheme in daily use, and an emergency is performed through the fault-tolerant scheme when the first display area 111 or the first driving chip 12 has an emergency fault, so as to ensure that the display device can display important information at any time, enhance the reliability of the display device, and ensure the use safety of a user.
Optionally, the display device may be a vehicle-mounted display screen; the preset information may include: at least one of vehicle speed, engine state information, vehicle self-checking information and braking information. If display device is as on-vehicle display screen, predetermine the information and include the speed of a motor vehicle to make the user can acquire accurate speed of a motor vehicle in real time, guarantee driving safety, predetermine the information and can also include engine state information, the user of being convenient for in time stops driving when the engine is unusual. In addition, the preset information can also comprise vehicle self-checking information, for example, whether the vehicle is normally steered or not, whether the windshield wiper is flexible or not, and the phenomena of oil leakage, water leakage, electric leakage and the like do not exist.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another display device according to an embodiment of the present invention, and optionally, the first display region 111 may include a plurality of first scan lines 151; the second display area 112 may include a plurality of second scan lines 152; a first gate driving unit 171, a second gate driving unit 172, and a switching unit 173 may be further included; the first gate driving unit 171 includes a plurality of cascade-connected first shift registers 1711; the output ends of the cascaded first shift registers 1711 are electrically connected with the rows of pixel units 14 in the first display area 111 in a one-to-one correspondence manner through the first scanning lines 151; the second gate driving unit 172 includes a plurality of cascaded second shift registers 1721; the output ends of the cascaded second shift registers 1721 are electrically connected to the rows of pixel units 14 in the second display area 112 through the second scan lines 152 in a one-to-one correspondence; the control terminals of the switch units 173 are electrically connected to the first driving chip 12 and the second driving chip 13, respectively; a first end of the switch unit 173 is electrically connected to an output end of the last stage second shift register 1721 of the second gate driving unit 172; a second terminal of the switch unit 173 is electrically connected to an enable terminal of the first stage first shift register 1711 of the first gate driving unit 171; the controller 18 is configured to control the first driving chip 12 or the second driving chip 13 to output a control signal to the control terminal of the switching unit 173.
As shown in fig. 2, the second display region 112 may be disposed at one side of the first display region 111, and is located at one side of the first display region 111 along the row direction X of the pixel units 14, in this embodiment, the first display region 111 includes a plurality of first scan lines 151 extending along the row direction X, the second display region 112 includes a plurality of second scan lines 152 extending along the row direction X, the gate driving circuit may include a first gate driving unit 171, a second gate driving unit 172, and a switch unit 173, referring to fig. 2, the first gate driving unit 171 may include a plurality of cascaded first shift registers 1711, the first shift registers 1711 are disposed in one-to-one correspondence with the first scan lines 151, and output ends of the first shift registers 1711 are electrically connected to a corresponding row of pixel units 14 through the corresponding first scan lines 151 for providing scan signals for the row of pixel units 14. And the previous stage first shift register 1711 in the cascade of first shift registers 1711 can output an enable signal to turn on the next stage first shift register 1711, thereby completing the progressive scanning of the first display region 111. Similarly, the second gate driving unit 172 includes a plurality of cascaded second shift registers 1721, the second shift registers 1721 are disposed corresponding to the second scan lines 152, and the output end of the second shift register 1721 is electrically connected to a corresponding row of pixel units 14 through the corresponding second scan line 152 for providing scan signals to the row of pixel units 14. And the previous stage second shift register 1721 of the cascaded second shift registers 1721 can output an enable signal to turn on the next stage second shift register 1721, thereby completing the progressive scanning of the second display region 112.
The switch unit 173 is disposed between the first gate driving unit 171 and the second gate driving unit 172, the switch unit 173 includes a control terminal K1, a first terminal K2 and a second terminal K3, the control terminal K1 of the switch unit 173 can be electrically connected to the first driving chip 12 and the second driving chip 13, the first terminal K2 is electrically connected to an output terminal of the last stage second shift register 1721a of the second gate driving unit 172, and the second terminal K3 is electrically connected to an enable terminal of the first stage first shift register 1711a of the first gate driving unit 171. The controller 18 can control the first driving chip 12 or the second driving chip 13 to output a control signal to the control terminal of the switch unit 173, so that the first terminal K2 and the second terminal K3 of the switch unit 173 are turned on or off. Specifically, the controller 18 can detect the working states of the first display region 111 and the first driving chip 12 in real time, when the working states of the first display region 111 and the first driving chip 12 are both normal, the first driving chip 12 can send a control signal to turn on the switch unit 173, so that the output end of the last stage second shift register 1721a of the second gate driving unit 172 is electrically connected with the enable end of the first stage first shift register 1711a of the first gate driving unit 171, during the progressive scanning process, the second shift register 1721a can drive the first shift register 1711a to scan the whole display region 11 line by line, so that the whole display region 11 is displayed, when the whole display region 11 is displayed, the first display region 111 and the second display region 112 can combine to display a whole picture, or the first display region 111 and the second display region 112 can display separate pictures respectively, the present embodiment does not limit the display forms of the first display area 111 and the second display area 112.
When the controller 18 detects that the first display region 111 works abnormally, the first driving chip 12 sends a control signal to turn off the switch unit 173, and only the second gate driving unit 172 works, that is, only the pixel units 14 of the second display region 112 are scanned line by line, and the second driving chip 13 provides data signals for the pixel units 14 of the second display region 112, so that the second display region 112 displays preset information, and the first display region 111 stops displaying. Of course, there may be a case where the first driving chip 12 is damaged, and when the first driving chip 12 is damaged, the control signal may not be output, so when the controller 18 detects that the first driving chip 12 is abnormally operated or the first display region 111 and the first driving chip 12 are abnormally operated at the same time, the second driving chip 13 may send the control signal to turn off the switch unit 173, only the second gate driving unit 172 is operated, and the second driving chip 13 provides the data signal for the pixel unit 14 of the second display region 112, so that the second display region 112 displays the preset information.
Besides the first gate driving unit 171 and the second gate driving unit 172 can be disconnected by the switch unit 173, the output terminal of the last second shift register 1721a of the second gate driving unit 172 can be directly pulled low, and the output terminal of the last second shift register 1721a of the second gate driving unit 172 is prevented from outputting an enable signal to the enable terminal of the first shift register 1711a of the first gate driving unit 171. The present embodiment does not limit the manner of disconnection between the first gate driving unit 171 and the second gate driving unit 172.
With continued reference to fig. 2, optionally, the display area 11 may further include a plurality of data lines 16; a first end of the data line 16 is electrically connected to the first driving chip 12; at least a part of the data lines 16 of the first display region 111 extend to the second display region 112; along the extending direction of the data line 16, the pixel units 14 in the same column in the first display region 111 and the second display region 112 share the same data line 16; a second end of the data line 16 in the first display region 111, which is common to the second display region 112, is electrically connected to the second driving chip 13.
As shown in fig. 2, when the second display area 112 is disposed on one side of the first display area 111 along the row direction X, each pixel unit 14 of the second display area 112 may be arranged in the same column as a part of the pixel units 14 of the first display area 111, further, the second display area 112 and the first display area 111 may share a part of the data lines 16, the display area 11 includes a plurality of data lines 16, and a first end of each data line 16 is connected to the first driving chip 12, so that the first driving chip 12 can provide data signals for the pixel units 14 of the entire display area 11. Along the extending direction of the data line 16, i.e. along the column direction Y, the pixel units 14 in the same column in the first display area 111 and the second display area 112 share the same data line 16, and the second end of the shared data line 16 is connected to the second driving chip 13, so that the second driving chip 13 only provides the data signal for the pixel units of the second display area 112. In this embodiment, the first display area 111 and the second display area 112 share part of the data lines 16, and the corresponding data lines 16 do not need to be separately arranged in the second display area 112 for the second driving chip 13, so that the arrangement number of the data lines is reduced, the process difficulty is reduced, and the aperture ratio of the second display area 112 is increased. Certainly, in this embodiment, a data line corresponding to the second driving chip 13 may also be separately disposed in the second display area 112, that is, for the pixel units 14 in the second display area 112, the pixel units 14 in the same column correspond to two data lines, one of the data lines is electrically connected to the first driving chip 12, and the other data line is electrically connected to the second driving chip 13, which is not limited in this embodiment.
As shown in fig. 3, fig. 3 is a schematic structural diagram of another display device according to an embodiment of the present invention. Optionally, the display device may further include a first gate driving unit 171; the first gate driving unit 171 may include a plurality of cascaded first shift registers 1711; the display area 11 includes a plurality of scanning lines 15; along the extending direction of the scan line 15, the pixel units 14 in the same row in the first display region 111 and the second display region 112 share the same scan line 15; the output ends of the cascaded first shift registers 1711 are electrically connected with the rows of pixel units 14 in the first display area 111 and the second display area 112 in a one-to-one correspondence manner through the scanning lines 15; the enable terminal of the first stage first shift register 1711b is electrically connected to the first driver chip 12 and the second driver chip 13.
As shown in fig. 3, when the second display region 112 is disposed on one side of the first display region 111 along the column direction Y, each pixel unit 14 of the second display region 112 may be arranged in the same row as a part of the pixel units 14 of the first display region 111, in this embodiment, the display region 11 includes a plurality of scan lines 15 extending along the row direction X, the gate driving circuit of the display device includes a first gate driving unit 171, the first gate driving unit 171 may include a plurality of cascaded first shift registers 1711, the first shift registers 1711 are disposed in one-to-one correspondence with the scan lines 15, and the output end of the first shift register 1711 is electrically connected to a corresponding row of the pixel units 14 through the corresponding scan line 15 for providing scan signals for the row of the pixel units 14. In the plurality of cascade-connected first shift registers 1711, the first shift register 1711 of the previous stage outputs an enable signal to the enable terminal of the first shift register 1711 of the next stage through the output terminal, thereby completing the progressive scanning of the display region 11. The enable terminals of the first stage first shift register 1711b are electrically connected to the first driver chip 12 and the second driver chip 13, respectively, and can receive enable signals of the first driver chip 12 and the second driver chip 13. The controller 18 can control the first driving chip 12 and the second driving chip 13 such that the first driving chip 12 or the second driving chip 13 drives the first gate driving unit 171.
Along the extending direction of the scan line 15, each pixel unit 14 of the second display area 112 may be arranged in the same row as a part of the pixel units 14 of the first display area 111, and the pixel units 14 in the same row in the first display area 111 and the second display area 112 may share the same scan line 15, so that the embodiment does not need to separately set the corresponding scan line 15 for the second driving chip 13 in the second display area 112, thereby reducing the number of the scan lines 15, reducing the process difficulty, and increasing the aperture ratio of the second display area 112. Similarly, in this embodiment, the second display area 112 may further separately set a scan line corresponding to the second driving chip 13, that is, for the pixel units 14 in the second display area 112, the pixel units 14 in the same row correspond to two scan lines, one of the scan lines is electrically connected to the first driving chip 12, and the other scan line is electrically connected to the second driving chip 13, which is not limited in this embodiment.
With continued reference to fig. 3, optionally, the first display region 111 may include a plurality of first data lines 161; the second display area 112 includes a plurality of second data lines 162; the plurality of first data lines 161 are electrically connected to the first driving chip 12; first ends of the plurality of second data lines 162 are electrically connected to the first driving chip 12; second ends of the plurality of second data lines 162 are electrically connected to the second driving chip 13.
The display area 11 includes a plurality of data lines 16, and a first end of each data line 16 is connected to the first driving chip 12, so that the first driving chip 12 can provide data signals to the pixel units 14 of the entire display area 11. The data line 16 may include a plurality of first data lines 161 and a plurality of second data lines 162, the first display area 111 may include a plurality of first data lines 161, the second display area 112 may include a plurality of second data lines 162, and first ends of the first data lines 161 and the second data lines 162 are electrically connected to the first driving chip 12, so that the first driving chip 12 can simultaneously drive the first display area 111 and the second display area 112 to display, and a second end of the second data line 162 is electrically connected to the second driving chip 13, so that the second driving chip 13 can independently provide data signals for pixel units of the second display area 112, thereby preventing the first display area 111 and/or the first driving chip 12 from failing to display in the entire display area 11, ensuring that a user can timely obtain important information, and effectively protecting safety of drivers.
As shown in fig. 4, fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention. The display area 11 formed by combining the first display area 111 and the second display area 112 shown in fig. 2 and 3 is a special-shaped shape including a convex shape, fig. 4 shows a case where the first display area 111 and the second display area 112 are combined to form a regular shape, and when the first display area 111 and the second display area 112 are displayed, the combined shape shown in fig. 4 facilitates the display of an entire picture in the first display area 111 and the second display area 112 by the display area 11. When the first display area 111 or the first driving chip 12 works abnormally and is displayed only through the second display area 112, the content displayed in the second display area 112 may be different from that displayed in the whole screen, and only preset information such as vehicle speed, engine state information, and the like is displayed. In addition, the shape formed by the combination of the first display area 111 and the second display area 112 may be a regular or irregular shape such as a diamond shape, a regular hexagon shape, and the like, which is not limited in this embodiment.
Optionally, the first driving chip 12 may include a status register; the controller 18 is configured to obtain a status value in the status register, and determine that the operating status of the first driving chip 12 or the first display area 111 is abnormal when the status value in the status register is different from a preset value.
The first driving chip 12 includes a status register, the status register can calibrate whether the working status of the first driving chip 12 and the first display area 111 is abnormal or not through a status value, a preset value can be set for the status value, and when the status value in the status register is different from the preset value, it is determined that the working status of the first driving chip 12 or the first display area 111 is abnormal. For example, the state value may be represented by a binary sequence, and if the operating state of the first driver chip 12 and the first display area 111 is normal, the state value is a preset value "00", and when the operating state of at least one of the first driver chip 12 and the first display area 111 is abnormal, the state value may be "01", and at this time, the state value is not the preset value "00", and it may be determined that the operating state of the first driver chip 12 or the first display area 111 is abnormal. Specifically, a first state value for calibrating the working state of the first driver chip 12 and a second state value for calibrating the working state of the first display area 111 may be set, so as to obtain the working states of the first driver chip 12 and the first display area 111, respectively. The first state value may be set according to parameters such as the operating current and the operating voltage of the first driving chip 12, and the second state value may be set according to the operating current and the operating voltage of the first display region 111, the display brightness, and whether to blink or not. The setting of the status register can facilitate the controller to timely acquire the working status of the first driving chip 12 and the first display area 111, so as to set the display status of the first display area 111 and the second display area 112. In addition, in the embodiment, a first state value for calibrating the working state of the first driver chip 12 and a second state value for calibrating the working state of the first display area 111 are set, so that the working states of the first driver chip 12 and the first display area 111 are respectively obtained, and a fault occurrence position is conveniently and rapidly locked.
As shown in fig. 5, fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention. Optionally, the display device may further include a second display area wake-up key 19; the second display area wake-up key 19 is electrically connected with the controller 18; after triggering the second display area wake-up key 19, the controller 18 controls the first driving chip 12 to stop driving, and drives each pixel unit 14 of the second display area 112 to display the preset information through the second driving chip 13.
In the embodiment, the controller 18 generally detects the operating states of the first driving chip 12 and the first display area 111 automatically, but there may be a problem of failure of the automatic detection function, or an abnormal condition that is not easily detected by the controller 18 but is recognizable to human eyes, for example, a pixel unit flickers or cannot be lighted. In this embodiment, in order to effectively avoid the problem that the display area cannot be displayed due to the automatic detection function failure or the missing detection abnormal condition of the controller 18, a corresponding second display area wake-up key 19 is provided for the second display area 112, the second display area wake-up key 19 can receive a second display area wake-up instruction manually input by a user, the second display area wake-up key 19 can input the second display area wake-up instruction to the controller 18, the controller 18 controls the first driving chip 12 to stop driving, and drives each pixel unit 14 of the second display area 112 to display the preset information through the second driving chip 13, so that when the first driving chip 12 or the first display area 111 fails, the second display area 112 can be effectively driven to display, and the reliability of the display device is enhanced.
As shown in fig. 6, fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention. Alternatively, the display device may further include a first flexible circuit board 21; the first flexible circuit board 21 is electrically connected to the first driver chip 12 and the second driver chip 13.
The display device may only be provided with one first flexible circuit board 21, the first flexible circuit board 21 is electrically connected with the first driving chip 12 and the second driving chip 13, and the first flexible circuit board 21 may be bent to the non-light-emitting side of the display panel and electrically connected with the controller 18 on the non-light-emitting side of the display panel, so that the controller 18 controls the first driving chip 12 and the second driving chip 13 through the first flexible circuit board 21. And the frame width of the display device can be reduced by the arrangement of the first flexible circuit board 21, which is beneficial to the narrow frame arrangement of the display device.
As shown in fig. 7, fig. 7 is a schematic structural diagram of another display device according to an embodiment of the present invention. Alternatively, the display device may further include a first flexible circuit board 21 and a second flexible circuit board 22; the first flexible circuit board 21 is electrically connected with the first driving chip 12; the second flexible circuit board 22 is electrically connected to the second driving chip 13.
The display device may further be provided with two flexible circuit boards: a first flexible circuit board 21 and a second flexible circuit board 22. The first flexible circuit board 21 is electrically connected to the first driving chip 12, and the first flexible circuit board 21 can be bent to the non-light-emitting side of the display panel and electrically connected to the controller 18 on the non-light-emitting side of the display panel, so that the controller 18 controls the first driving chip 12 through the first flexible circuit board 21. Similarly, the second flexible circuit board 22 is electrically connected to the second driving chip 13, and the second flexible circuit board 22 can be bent to the non-light-emitting side of the display panel and electrically connected to the controller 18 on the non-light-emitting side of the display panel, so that the controller 18 controls the first driving chip 12 through the second flexible circuit board 22. The first flexible circuit board 21 and the second flexible circuit board 22 are respectively arranged in the embodiment, and the first driving chip 12 and the second flexible circuit board 22 are separately transmitted with control signals, so that confusion of the control signals is avoided, and the control accuracy is improved. And the arrangement of the first flexible circuit board 21 and the second flexible circuit board 22 can reduce the frame width of the display device, which is beneficial to the narrow frame arrangement of the display device.
As shown in fig. 8, fig. 8 is a schematic structural diagram of another display device according to an embodiment of the present invention. Optionally, the pixel density of the first display region 111 may be greater than the pixel density of the second display region 112; where pixel density refers to the number of pixel cells 14 per unit area.
The pixel density is the number of pixel units 14 included in a unit area, and the higher the pixel density is, the higher the resolution of the display area is, so that the higher the definition of the displayed picture is. In this embodiment, when the second display area 112 is used alone, only simple characters such as numbers, letters, or chinese characters need to be displayed, so the pixel density of the second display area 112 can be set to be smaller than the pixel density of the first display area 111 in this embodiment, and the characters are ensured to be displayed clearly, and at the same time, the panel manufacturing cost is reduced, and the power consumption of the second display area 112 is reduced. In addition, in this embodiment, the pixel density of the first display area 111 may also be smaller than the pixel density of the second display area 112, and the present embodiment does not limit the magnitude relationship between the pixel density of the first display area 111 and the pixel density of the second display area 112.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A display device comprising a display area, the display area comprising a first display area and a second display area; the display device also comprises a first driving chip, a second driving chip and a controller;
each pixel unit of the first display area and each pixel unit of the second display area are electrically connected with the first driving chip; each pixel unit of the second display area is electrically connected with the second driving chip;
the controller is electrically connected with the first driving chip and the second driving chip respectively;
the controller is used for driving each pixel unit of the first display area and the second display area to display through the first driving chip; the controller is further configured to acquire a working state of the first driving chip and/or the first display area, control the first driving chip to stop driving when the working state of the first driving chip and/or the first display area is abnormal, and drive each pixel unit of the second display area to display preset information through the second driving chip;
the first display area comprises a plurality of first scanning lines; the second display area comprises a plurality of second scanning lines;
the grid-connected inverter further comprises a first grid driving unit, a second grid driving unit and a switch unit;
the first gate driving unit comprises a plurality of cascaded first shift registers; the output ends of the cascaded first shift registers are electrically connected with the pixel units in multiple rows of the first display area in a one-to-one correspondence manner through first scanning lines;
the second gate driving unit comprises a plurality of cascaded second shift registers; the output ends of the plurality of cascaded second shift registers are electrically connected with the plurality of rows of pixel units of the second display area in a one-to-one correspondence manner through second scanning lines;
the control end of the switch unit is electrically connected with the first driving chip and the second driving chip respectively; the first end of the switch unit is electrically connected with the output end of the first-stage second shift register of the second gate drive unit; the second end of the switch unit is electrically connected with the enabling end of the last stage first shift register of the first grid driving unit; the controller is used for controlling the first driving chip or the second driving chip to output a control signal to the control end of the switch unit;
the display area also comprises a plurality of data lines; the first end of the data line is electrically connected with the first driving chip;
at least part of the data lines of the first display area extend to the second display area; along the extending direction of the data line, the pixel units in the same column in the first display area and the second display area share the same data line;
and the second end of the data line shared by the first display area and the second display area is electrically connected with the second driving chip.
2. The display device according to claim 1, further comprising a first gate driving unit; the first gate driving unit comprises a plurality of cascaded first shift registers;
the display area comprises a plurality of scanning lines; along the extension direction of the scanning lines, the pixel units in the same row in the first display area and the second display area share the same scanning line;
the output ends of the cascaded first shift registers are electrically connected with the rows of pixel units in the first display area and the second display area in a one-to-one correspondence mode through scanning lines;
the enabling end of the first shift register of the first stage is electrically connected with the first driving chip and the second driving chip.
3. The display device according to claim 2,
the first display area comprises a plurality of first data lines; the second display area comprises a plurality of second data lines;
the plurality of first data lines are electrically connected with the first driving chip; the first ends of the plurality of second data lines are electrically connected with the first driving chip; the first ends of the plurality of second data lines are electrically connected with the second driving chip.
4. The display device according to claim 1, wherein the first driver chip includes a status register; the controller is used for acquiring the state value in the state register and judging that the working state of the first driving chip or the first display area is abnormal when the state value in the state register is different from a preset value.
5. The display device according to claim 1, wherein the display device is an in-vehicle display screen; the preset information includes: at least one of vehicle speed, engine state information, vehicle self-checking information and braking information.
6. The display device according to claim 1, further comprising a second display area wake-up key; the second display area awakening key is electrically connected with the controller; after the second display area awakening key is triggered, the controller controls the first driving chip to stop driving, and drives each pixel unit of the second display area to display preset information through the second driving chip.
7. The display device according to claim 1, further comprising a first flexible circuit board;
the first flexible circuit board is electrically connected with the first driving chip and the second driving chip.
8. The display device according to claim 1, further comprising a first flexible circuit board and a second flexible circuit board; the first flexible circuit board is electrically connected with the first driving chip; the second flexible circuit board is electrically connected with the second driving chip.
9. The display device according to claim 1, wherein a pixel density of the first display region is larger than a pixel density of the second display region;
wherein the pixel density refers to the number of pixel units in a unit area.
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| CN111968579A (en) * | 2020-09-07 | 2020-11-20 | 京东方科技集团股份有限公司 | Display panel and wearable device |
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| CN103208250B (en) * | 2013-03-26 | 2015-08-05 | 京东方科技集团股份有限公司 | A kind of driving circuit, driving method and display device |
| TWI679624B (en) * | 2014-05-02 | 2019-12-11 | 日商半導體能源研究所股份有限公司 | Semiconductor device |
| CN107272290A (en) * | 2017-07-18 | 2017-10-20 | 深圳市华星光电技术有限公司 | A kind of array base palte and display panel |
| CN107346650A (en) * | 2017-09-14 | 2017-11-14 | 厦门天马微电子有限公司 | Display panel, display device and scanning drive method |
| CN109523944A (en) * | 2018-12-19 | 2019-03-26 | 上海中航光电子有限公司 | A kind of display device |
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