CN110349546A - Display device - Google Patents
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- CN110349546A CN110349546A CN201810299924.4A CN201810299924A CN110349546A CN 110349546 A CN110349546 A CN 110349546A CN 201810299924 A CN201810299924 A CN 201810299924A CN 110349546 A CN110349546 A CN 110349546A
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- drive module
- electric power
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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
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of display device, it is coupled to processing module and includes multiple pixels, the first drive module and the second drive module.First drive module is used to receive the output of the first electric power and first control signal from processing module, and exports the first feedback signal to processing module.Second drive module is used to receive the output of the second electric power and second control signal from processing module, and exports the second feedback signal to processing module.First drive module and the second drive module are respectively used to drive multiple pixels.When processing module provides the output of the first electric power and does not provide the output of the second electric power, the first feedback signal is higher than preset voltage value and the second feedback signal is lower than preset voltage value.When processing module does not provide the output of the first electric power and provides the output of the second electric power, the first feedback signal is lower than preset voltage value and the second feedback signal is higher than preset voltage value.Display device can take over the first drive module with the second drive module and be operated, and make it that can debug in a short time.
Description
Technical field
The present invention is in relation to a kind of display device, the display device of espespecially a kind of changeable driving circuit.
Background technique
Traditional display device for vehicle (for example, instrument board) is spliced by two display panels, and two drive surfaces
Plate has respective driving circuit.Therefore, traditional vehicle display center has apparent frame or gap and reduces user
Visual range, and if one of display panel driving circuit damage, can make drive can only read half driving letter
It ceases and traffic safety is impacted.Though in addition, by display device for vehicle with single display panel realization can expand visual range,
Once but the driving circuit damage of single display panel, it will so that running information can not be read completely and more influence to go by driving
Vehicle safety.
Summary of the invention
In view of this, the display device for how providing changeable driving circuit to debug, actually industry has to be solved
The problem of.
One embodiment of the invention is coupled to processing module in relation to a kind of display device, display device.Display device includes
Multiple pixels, the first drive module and the second drive module.First drive module is used to receive the first electric power from processing module defeated
Out and first control signal, and for exporting the first feedback signal to processing module.Second drive module is used for from processing module
The output of the second electric power and second control signal are received, and for exporting the second feedback signal to processing module, wherein the first driving
Module and the second drive module are respectively used to be sequentially driven multiple pixels according to first control signal and second control signal.Its
In, it exports when processing module provides the first electric power to the first drive module, and the second electric power is not provided and is exported to the second driving mould
When block, the first feedback signal is higher than preset voltage value, and the second feedback signal is lower than preset voltage value, when processing module does not provide the
One electric power is exported to the first drive module, and when providing the second electric power and exporting to the second drive module, the first feedback signal is lower than
Preset voltage value, the second feedback signal are higher than preset voltage value.
In certain embodiments, when the first drive module receives first control signal and it is defeated to be not received by the first electric power
When out, the first feedback signal is higher than preset voltage value certainly and switched to lower than preset voltage value by the first drive module, to notify to locate
It manages module to stop providing the output of the first electric power, and starts to provide the output of the second electric power.
In certain embodiments, when the first drive module receives the output of the first electric power and is not received by the first control letter
Number when, the first drive module switches to the first feedback signal lower than preset voltage value from being higher than preset voltage value, to notify to locate
It manages module to stop providing the output of the first electric power, and starts to provide the output of the second electric power.
In certain embodiments, the first drive module includes the first sequential control circuit, the first source circuit and the first grid
Polar circuit.First sequential control circuit is used for the output of the first electric power of foundation and first control signal output first vertically starts letter
Number, first level enabling signal and the first feedback signal.First source circuit is used to provide according to first level enabling signal more
A first data voltage is to multiple pixels.First grid circuit is used to provide multiple first grids according to the first vertical start signal
Signal is to multiple pixels, to control multiple first data voltages of multiple pixel received in sequence.Wherein the second drive module includes the
Two sequential control circuits, the second source circuit and second grid circuit.Second sequential control circuit is used for defeated according to the second electric power
The second vertical start signal, the second horizontal start signal and the second feedback signal are exported with second control signal out.Second source electrode
Circuit is used to provide multiple second data voltages to multiple pixels according to the second horizontal start signal.Second grid circuit be used for according to
Multiple second grid signals are provided to multiple pixels according to the second vertical start signal, to control multiple pixel received in sequence multiple the
Two data voltages.
In certain embodiments, when the first sequential control circuit receive the first electric power output and first control signal, and
When not exporting the first vertical start signal or first level enabling signal, the first sequential control circuit by the first feedback signal from
It switches to higher than preset voltage value lower than preset voltage value.
In certain embodiments, multiple pixel arrangements are at multiple row, and display device additionally comprise multiple first current limiting switches and
Multiple second current limiting switches.The control terminal of each first current limiting switch is used to receive first switch letter from the first sequential control circuit
Number, and multiple first current limiting switches are respectively couple to the column pixel in multiple row pixel and between first grid circuit.Each
The control terminal of two current limiting switches is used to receive second switch signal from the second sequential control circuit, and multiple second current limiting switches are each
From between the column pixel being coupled in multiple row pixel and second grid circuit.
In certain embodiments, each column pixel be coupled to multiple first current limiting switches one of them and it is multiple second limit
Between one of them for flowing switch.
In certain embodiments, when the first feedback signal is higher than preset voltage value, and the second feedback signal is lower than default electricity
When pressure value, multiple first current limiting switches are in the conductive state, and multiple second current limiting switches are in an off state.When the first feedback is believed
Number be lower than preset voltage value, and the second feedback signal be higher than preset voltage value when, multiple first current limiting switches are in an off state,
Multiple second current limiting switches are in the conductive state.
In certain embodiments, each pixel includes gray scale control circuit, the first transistor and second transistor.First is brilliant
Body pipe includes first end, second end and control terminal, and the first end of the first transistor is coupled to gray scale control circuit, the first transistor
Second end for receiving the first data voltage, the control terminal of the first transistor is for receiving first grid signal.Second crystal
Pipe includes first end, second end and control terminal, and the first end of second transistor is coupled to gray scale control circuit, second transistor
Second end is for receiving the second data voltage, and the control terminal of second transistor is for receiving second grid signal.Wherein grayscale control
Circuit processed is used for one of generation gray-scale intensity according to the first data voltage and the second data voltage.
In certain embodiments, the first drive module additionally comprises first and pulls down switch.First pull down switch comprising first end,
Second end and control terminal, the first first end to pull down switch are coupled to the control terminal of second transistor, first pull down switch
Two ends are used to receive third switch letter from the first sequential control circuit for receiving reference voltage, the first control terminal to pull down switch
Number.Second driving group additionally comprises second and pulls down switch.Second pulls down switch comprising first end, second end and control terminal, under second
The first end of drag switch is coupled to the control terminal of the first transistor, and the second second end to pull down switch is used to receive reference voltage,
Second control terminal to pull down switch is used to receive the 4th switching signal from the second sequential control circuit.
In certain embodiments, when the first feedback signal is higher than preset voltage value, and the second feedback signal is lower than default electricity
When pressure value, first pull down switch it is in the conductive state to turn off second transistor, and second pull down switch it is in an off state.When
First feedback signal be lower than preset voltage value, and the second feedback signal be higher than preset voltage value when, first pull down switch in close
Disconnected state, and second pull down switch it is in the conductive state to turn off the first transistor.
Above-mentioned display device can take over the first drive module with the second drive module and be operated, so that display device
It can be in troubleshooting be continued in the short time to provide display picture.
Detailed description of the invention
For above and other purpose, feature, advantage and the embodiment of invention can be clearer and more comprehensible, be described with reference to the drawings as
Under:
Fig. 1 is the simplified functional block diagram of display device according to one embodiment of the invention.
Fig. 2 is the simplified partial function block diagram of display device according to another embodiment of the present invention.
Fig. 3 is the simplified partial function block diagram of display device according to further embodiment of this invention.
Specific embodiment
Illustrate the embodiment of the present invention below in conjunction with relevant drawings.In the accompanying drawings, identical label indicate it is identical or
Similar element or method flow.
Fig. 1 is the simplified functional block diagram of display device 100 according to one embodiment of the invention.Display device 100 is wrapped
Containing the first drive module 110, the second drive module 120 and multiple pixels 130, plurality of pixel 130 is arranged in multiple row.Display
Device 100 is coupled to control circuit 101, and the first drive module 110 and the second drive module 120 respectively can be according to control circuits
101 one or more output signals are sequentially driven multiple pixels 130.Also that is, the first drive module 110 can drive alone it is all
Without relying on the cooperation running with the second drive module 120, the second drive module 120 can also drive alone all pixel 130
Pixel 130 is without relying on the cooperation running with the first drive module 110.To make simplified form and ease of explanation, display device
Other elements and connection relationship in 100 are not illustrated in Fig. 1.
First drive module 110 includes the first sequential control circuit 112, the first source circuit 114 and first grid circuit
116.First sequential control circuit 112 is used to receive the first electric power output PW1 and first control signal from control circuit 101
CT1, and for hanging down according to the first electric power output PW1 and first control signal CT1 generation first level enabling signal STH1, first
Straight enabling signal STV1 and the first feedback signal FB1.First level enabling signal STH1 for trigger the first source circuit 114 according to
Sequence exports multiple first data voltage Data1 to multiple pixels 130.First vertical start signal STV1 is then used to trigger the first grid
Polar circuit 116 sequentially exports multiple first grid signal Vg1 to multiple pixels 130, to control multiple 130 received in sequence of pixel
One data voltage Data1.
First drive module 120 includes the second sequential control circuit 122, the second source circuit 124 and second grid circuit
126.Second sequential control circuit 122 is used to receive the second electric power output PW2 and second control signal from control circuit 101
CT2, and for hanging down according to the second horizontal start signal STH2 of the second electric power output PW2 and second control signal CT2 generation, second
Straight enabling signal STV2 and one second feedback signal FB2.Second horizontal start signal STH2 is for triggering the second source circuit 124
Multiple second data voltage Data2 are sequentially exported to multiple pixels 130.Second vertical start signal STV2 is then used to trigger second
Grid circuit 126 sequentially exports multiple second grid signal Vg2 to multiple pixels 130, to control multiple 130 received in sequence of pixel
Second data voltage Data2.
In implementation, first control signal CT1 and second control signal CT2 can be vertical synchronizing signal (Vsync), level
Synchronization signal (Hsync), clock signal or data actuating signal (DE).Control circuit 101 can with various microprocessors,
Special application integrated circuit (ASIC) or field programmable gate array (FPGA) Lai Shixian.
In addition, pixel 150 can be liquid crystal pixel circuit, active matrix organic LED (AMOLED) pixel electricity
Road or various suitable pixel circuits.
When control circuit 101, which provides the first electric power, exports PW1 and first control signal CT1 to the first drive module 110,
Second electric power just will not be provided and export PW2 and second control signal CT2 to the second drive module 120.And when control circuit 101 mentions
When exporting PW2 and second control signal CT2 to the second drive module 120 for the second electric power, the output of the first electric power just will not be provided
PW1 and first control signal CT1 is to the first drive module 110.Also that is, when the first drive module 110 is in enabled status, the
Two drive modules 120 can be in disabled state, and vice versa.It is succinct in order to what is described, it is pre- with the first drive module 110 below
If being illustrated for enabled status.
When the first sequential control circuit 112 receives the first electric power output PW1 and first control signal CT1, when first
Sequence control circuit 112 can provide first level enabling signal STH1 and the first vertical start signal STV1 to the first source electrode electricity respectively
Road 114 and first grid circuit 116.In addition, the first feedback signal FB1 can be set above by the first sequential control circuit 112
Preset voltage value (for example, 3V), to notify the first drive module 110 of control circuit 101 to be at this time in normal operating conditions.
On the other hand, the second sequential control circuit 122 is not received by the second electric power output PW2 and second control signal
CT2, so the second feedback signal FB2 of the second sequential control circuit 122 can be lower than preset voltage value, and the second timing control electricity
Road 122 will not generate the second horizontal start signal STH2 and the second vertical start signal STV2.Therefore, multiple pixel circuits 130
Only the first grid signal Vg1 and the first data-signal Data1 according to the output of the first drive module 110 are operated.
When control circuit 101 persistently provides the first electric power output PW1 and first control signal CT1, but the first timing control
When circuit 112 enters the state for being not received by the first electric power output PW1 by the state for receiving the first electric power output PW1, the
First feedback signal FB1 can be higher than preset voltage value certainly and switched to lower than preset voltage value by one sequential control circuit 112.Work as control
Circuit 101 processed persistently provides the first electric power output PW1 and first control signal CT1, but the first sequential control circuit 112 is by receiving
To first control signal CT1 state enter be not received by first control signal CT1 state when, the first sequential control circuit
First feedback signal FB1 can be higher than preset voltage value certainly by 112 to be switched to lower than preset voltage value.
Also that is, when the first sequential control circuit 112 receives only the first electric power output PW1's and first control signal CT1
One of them when, the first feedback signal FB1 can be set below preset voltage value by the first sequential control circuit 112.
In addition, when the first sequential control circuit 112 receive the first electric power output PW1 and first control signal CT1, but because
It is vertical first level enabling signal STH1 or first can not to be generated or exported for fault (for example, short circuit or component wear)
When enabling signal STV1, the first feedback signal FB1 can be also set below preset voltage value by the first sequential control circuit 112.
And when control circuit 101 receives the first feedback signal FB1 lower than preset voltage value, 101 meeting of control circuit
Judge element relevant to the first drive module 110 or signal path damage, and stops exporting the first electric power output PW1 and first
Signal CT1 is controlled, and starts to export the second electric power output PW2 and second control signal CT2.
In other words, the first drive module 110 can enter disabled state by enabled status, and the second drive module 120 can be by
Disabled state enters enabled status, drives multiple pixels 130 to take over the first drive module 110.Second drive module 120
Function mode is similar to the first operating module 110, for brevity, does not repeat to repeat herein.
In this way, even if the first drive module 110 breaks down in operation, display device 100 also can be with
Second drive module 120 is taken over the first drive module 110 and is operated, by troubleshooting and to continue to provide aobvious in a short time
Show picture.
Fig. 2 is the simplified partial function block diagram of display device 200 according to another embodiment of the present invention.Display device
200 are similar to display device 100, and difference is that display device 200 includes multiple first current limiting switches 210 and multiple second current limlitings
Switch 220.The control terminal of each first current limiting switch 210 is used to receive first switch signal from the first sequential control circuit 112
SW1, and each first current limiting switch 210 is coupled between a column pixel 130 and first grid circuit 116.Each second current limliting
The control terminal of switch 220 is used to receive second switch signal SW2 from the second sequential control circuit 122, and each second current limliting is opened
220 are closed to be coupled between a column pixel 130 and second grid circuit 126.To make simplified form and ease of explanation, display device
Other elements and connection relationship in 200 are not illustrated in Fig. 2.
It is noted that each column pixel 130 is all coupled to first current limiting switch 210 and second current limiting switch
Between 220.
In implementation, the first current limiting switch 210 and the second current limiting switch 220 can be with various suitable N-type transistors come real
It is existing.
In the present embodiment, when the first feedback signal FB1 is higher than preset voltage value and the second feedback signal FB2 is lower than default
When voltage value (also that is, when the first drive module 110 is in enabled status and the second drive module 120 is in disabled state),
First switch signal SW1 can be in high-voltage level, and second switch signal SW2 is not then because the second sequential control circuit 122 has
It receives the second electric power output PW2 and is in low voltage level.Therefore, multiple first current limiting switches 210 can be in the conductive state,
Multiple second current limiting switches 220 then can be in an off state.
In the case, the first grid signal Vg1 that first grid circuit 116 exports can be via the first current limiting switch 210
It is transferred to pixel 130, but first grid signal Vg1 will not pass through the second current limiting switch 220.Therefore, display device 200 is in addition to can
Accidentally actuation is generated because of first grid signal Vg1 to avoid the second drive module 120, can also be avoided from the second driving mould
The noise of block 120 interferes first grid signal Vg1.
On the other hand, when the first feedback signal FB1 is lower than preset voltage value and the second feedback signal FB2 is higher than predeterminated voltage
When value (also that is, when the first drive module 110 is in disabled state and the second drive module 120 is in enabled status), first
Switching signal SW1 can be electric in low-voltage because the first sequential control circuit 112 is not received by the first electric power output PW1
Flat, second switch signal SW2 can then be in high-voltage level.Therefore, multiple first current limiting switches 210 can be in an off state,
Multiple second current limiting switches 220 then can be in the conductive state.
In the case, the second grid signal Vg2 that second grid circuit 126 exports can be via the second current limiting switch 220
It is transferred to pixel 130, but second grid signal Vg2 will not pass through the first current limiting switch 210.Therefore, display device 200 is in addition to can
Accidentally actuation is generated because of second grid signal Vg2 to avoid the first drive module 110, can also be avoided from the first driving mould
The noise of block 110 interferes second grid signal Vg2.
The function mode and advantage of many function blocks in display device 200 are similar to display device 100, are succinct
For the sake of, it does not repeat to repeat herein.
Fig. 3 is the simplified partial function block diagram of display device 300 according to further embodiment of this invention.Display device
300 are similar to display device 100, difference be display device 300 include first pull down switch 310, second pull down switch 320 with
And multiple pixels 330.To make simplified form and ease of explanation, the other elements in display device 300 are not drawn with connection relationship
It is shown in Figure 3.
Each pixel 330 of display device 300 includes gray scale control circuit 332, the first transistor 334 and second transistor
336.The first end of the first transistor 334 is coupled to gray scale control circuit 332, and the second end of the first transistor 334 is used for from the
One source circuit 114 receives the first data voltage Data1, and the control terminal of the first transistor 334 is used for from first grid circuit 116
Receive first grid signal Vg1.The first end of second transistor 336 is coupled to gray scale control circuit 332, second transistor 336
Second end be used to receive the second data voltage Data2 from the second source circuit 124, the control terminal of second transistor 336 is used for
Second grid signal Vg2 is received from second grid circuit 126.Gray scale control circuit 332 is used for according to the first data voltage Data1
With the specific gray-scale intensity of one of generation of the second data voltage Data2.
First pull down switch 310 first end is coupled to the control terminal of second transistor 336, and first pulls down switch 310
Second end for receiving reference voltage Vref, first pull down switch 310 control terminal for being connect from the first sequential control circuit 112
Receive third switching signal SW3.Second pull down switch 320 first end is coupled to the control terminal of the first transistor 334, the second drop-down
For receiving reference voltage Vref, the second pull down switch 320 control terminal is used for from the second timing control the second end of switch 320
Circuit 122 receives the 4th switching signal SW4.
In implementation, first pull down switch 310, second pull down switch 320, the first transistor 334 and second transistor 336 can
To be realized with various suitable N-type transistors.
In addition, reference voltage Vref has the low-voltage electricity for being enough to make the first transistor 334 or second transistor 336 to turn off
Flat (for example, 0V).
In the present embodiment, when the first feedback signal FB1 is higher than preset voltage value and the second feedback signal FB2 is lower than default
When voltage value, third switching signal SW3 can be in high-voltage level, and the 4th switching signal SW4 then can be because of the second timing control
Circuit 122 is not received by the second electric power output PW2 and is in low voltage level.
Therefore, first pull down switch 310 can it is in the conductive state so that the gate terminal of second transistor 336 voltage electricity
Steadily due to reference voltage Vref to close second transistor 336.Second pull down switch 320 can be in an off state.
In this way, when the first drive module 110 drives picture with first grid signal Vgl and the first data voltage Data1
When element 130, accidentally actuation can be generated because of the noise from the second drive module 120 to avoid second transistor 336, and then really
The the first data voltage Data1 for protecting writing pixel 130 will not morph.
On the other hand, when the first feedback signal FB1 is lower than preset voltage value and the second feedback signal FB2 is higher than predeterminated voltage
When value, third switching signal SW3 can be in because the first sequential control circuit 112 is not received by the first electric power output PW1
Low voltage level, the 4th switching signal SW4 can then be in high-voltage level.
Therefore, first pull down switch 310 can it is in an off state, second pull down switch 320 can be in the conductive state, make
The first transistor 334 gate terminal voltage levels constant in reference voltage Vref to close the first transistor 334.
In this way, when the second drive module 120 drives picture with second grid signal Vg2 and the second data voltage Data2
When element 130, accidentally actuation can be generated because of the noise from the first drive module 110 to avoid the first transistor 334, and then really
The the second data voltage Data2 for protecting writing pixel 130 will not morph.
The function mode and advantage of many function blocks in display device 300 are similar to display device 100, are succinct
For the sake of, it does not repeat to repeat herein.
Some vocabulary is used in specification and claim to censure specific element.However, technical field
In technical staff, it is to be appreciated that same element may be called with different nouns.Specification and claim are not
In such a way that the difference of title is as element is distinguished, but carry out the benchmark as differentiation with the difference of element functionally.It is saying
"comprising" mentioned by bright book and claim is open term, therefore should be construed to " including but not limited to ".In addition,
" coupling " is herein comprising any direct and indirect connection means.Therefore, if it is described herein that first element is coupled to second element,
Can be attached directly to by being electrically connected or being wirelessly transferred, and the signals connection type such as optical delivery by then representing first element
Two element, or electrical property or signal are connected to the second element indirectly by other elements or connection means.
In addition, unless specified in the instructions, otherwise the term of any singular lattice all includes the connotation of multiple grid simultaneously.
The above is only a preferred embodiment of the present invention, all equivalent changes and modifications done according to the claims in the present invention, all
It should belong to the scope of the present invention.
Claims (11)
1. a kind of display device, is coupled to processing module, which is characterized in that the display device includes:
Multiple pixels；
First drive module, for receiving the output of the first electric power and first control signal from the processing module, and for exporting
First feedback signal is to the processing module；
Second drive module, for receiving the output of the second electric power and second control signal from the processing module, and for exporting
Second feedback signal is to the processing module, wherein first drive module and second drive module be respectively used to according to
The multiple pixel is sequentially driven according to the first control signal and the second control signal；
Wherein, it exports when the processing module provides first electric power to first drive module, and does not provide described the
When two electric power are exported to second drive module, first feedback signal is higher than preset voltage value, the second feedback letter
Number be lower than the preset voltage value,
It exports when the processing module does not provide first electric power to first drive module, and second electric power is provided
When output to second drive module, first feedback signal is lower than the preset voltage value, second feedback signal
Higher than the preset voltage value.
2. display device as described in claim 1, which is characterized in that when first drive module receives first control
Signal processed and when being not received by first electric power output, first drive module is by first feedback signal from being higher than
The preset voltage value is switched to lower than the preset voltage value, to notify the processing module to stop providing first electric power
Output, and start to provide the second electric power output.
3. display device as described in claim 1, which is characterized in that when first drive module receives first electricity
When power exports and is not received by the first control signal, first feedback signal is higher than by first drive module certainly
The preset voltage value is switched to lower than the preset voltage value, to notify the processing module to stop providing first electric power
Output, and start to provide the second electric power output.
4. display device as described in claim 1, which is characterized in that first drive module includes:
First sequential control circuit, for vertically being opened according to first electric power output and first control signal output first
Dynamic signal, first level enabling signal and first feedback signal；
First source circuit, for providing multiple first data voltages to the multiple picture according to the first level enabling signal
Element；And
First grid circuit, for providing multiple first grid signals to the multiple picture according to first vertical start signal
Element, to control the multiple first data voltage of the multiple pixel received in sequence；
Wherein second drive module includes:
Second sequential control circuit, for vertically being opened according to second electric power output and second control signal output second
Dynamic signal, the second horizontal start signal and second feedback signal；
Second source circuit, for providing multiple second data voltages to the multiple picture according to second horizontal start signal
Element；And
Second grid circuit, for providing multiple second grid signals to the multiple picture according to second vertical start signal
Element, to control the multiple second data voltage of the multiple pixel received in sequence.
5. display device as claimed in claim 4, which is characterized in that when first sequential control circuit receives described
The output of one electric power and the first control signal, and without exporting first vertical start signal or first level starting
When signal, first feedback signal is higher than the preset voltage value certainly and switched to lower than institute by first sequential control circuit
State preset voltage value.
6. display device as claimed in claim 4, which is characterized in that the multiple pixel arrangement is at multiple row, the display dress
It sets and additionally comprises:
Multiple first current limiting switches, the control terminal of each first current limiting switch are used to receive the from first sequential control circuit
One switching signal, and the multiple first current limiting switch is respectively couple to the column pixel and described first in the multiple row pixel
Between grid circuit；
Multiple second current limiting switches, the control terminal of each second current limiting switch are used to receive the from second sequential control circuit
Two switching signals, and the multiple second current limiting switch is respectively couple to the column pixel and described second in the multiple row pixel
Between grid circuit.
7. display device as claimed in claim 6, which is characterized in that each column pixel is coupled to the multiple first current limliting and opens
Between one of them of one of them and the multiple second current limiting switch closed.
8. display device as claimed in claim 6, which is characterized in that when first feedback signal is higher than the predeterminated voltage
Value, and second feedback signal be lower than the preset voltage value when, the multiple first current limiting switch is in the conductive state, institute
It is in an off state to state multiple second current limiting switches,
Wherein, when first feedback signal is lower than the preset voltage value, and second feedback signal be higher than it is described default
When voltage value, the multiple first current limiting switch is in an off state, and the multiple second current limiting switch is in the conductive state.
9. display device as claimed in claim 4, which is characterized in that each pixel includes:
Gray scale control circuit；
The first transistor, includes first end, second end and control terminal, and the first end of the first transistor is coupled to described
Gray scale control circuit, the second end of the first transistor is for receiving first data voltage, the first crystal
The control terminal of pipe is for receiving the first grid signal；
Second transistor, includes first end, second end and control terminal, and the first end of the second transistor is coupled to described
Gray scale control circuit, the second end of the second transistor is for receiving second data voltage, second crystal
The control terminal of pipe is for receiving the second grid signal；
Wherein the gray scale control circuit is used for according to one of them of first data voltage and second data voltage
Generate gray-scale intensity.
10. display device as claimed in claim 9, which is characterized in that first drive module additionally comprises:
First pulls down switch, and includes first end, second end and control terminal, and the described first first end to pull down switch is coupled to
The control terminal of the second transistor, the described first second end to pull down switch are used to receive the reference voltage,
Described first control terminal to pull down switch is used to receive third switching signal from first sequential control circuit,
Wherein, second driving group additionally comprises:
Second pulls down switch, and includes first end, second end and control terminal, and the described second first end to pull down switch is coupled to
The control terminal of the first transistor, the described second second end to pull down switch are used to receive the reference voltage,
Described second control terminal to pull down switch is used to receive the 4th switching signal from second sequential control circuit.
11. display device as claimed in claim 10, which is characterized in that when first feedback signal is higher than the default electricity
Pressure value, and second feedback signal be lower than the preset voltage value when, described first pull down switch it is in the conductive state with close
Break the second transistor, and described second pull down switch it is in an off state,
Wherein, when first feedback signal is lower than the preset voltage value, and second feedback signal be higher than it is described default
When voltage value, described first pull down switch it is in an off state, and described second pull down switch it is in the conductive state to turn off
State the first transistor.
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| CN201810299924.4A CN110349546A (en) | 2018-04-04 | 2018-04-04 | Display device |
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| CN201810299924.4A CN110349546A (en) | 2018-04-04 | 2018-04-04 | Display device |
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