CN106023887A - Device and method for reducing ghosts of OLED (organic light emitting display) panel - Google Patents
Device and method for reducing ghosts of OLED (organic light emitting display) panel Download PDFInfo
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- CN106023887A CN106023887A CN201610439504.2A CN201610439504A CN106023887A CN 106023887 A CN106023887 A CN 106023887A CN 201610439504 A CN201610439504 A CN 201610439504A CN 106023887 A CN106023887 A CN 106023887A
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- target area
- display panel
- static pattern
- oled display
- ghost
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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]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to a device and method for reducing the ghosts of an OLED (organic light emitting display) panel. The device for reducing the ghosts of the OLED (organic light emitting display) panel includes a control unit, a detection unit and a display data arrangement unit; the control unit receives area control signals and time control signals, wherein the area control signals are used for determining the size and location of a target area, and the time control signals are used for determining a duration after which special display is carried out on the target area, a static pattern being displaying in the duration; the detection unit receives original image data, detects whether the static pattern exists in the target area, and transmits detected target area image information to the display data arrangement unit; and the display data arrangement unit receives the original image data, also receives the control signals of the control unit and the target area image information of the detection unit, and determines whether to start the special display of the target area. The invention also provides a corresponding method. With the device and method of the invention adopted, the ghosts can be decreased, and the overall display effect of the panel will not be affected.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of minimizing OLED display panel ghost
Device and method.
Background technology
Flat display apparatus has that fuselage is thin, power saving, the many merits such as radiationless, widely should obtain
With.Existing flat display apparatus mainly includes liquid crystal indicator (LCD, Liquid Crystal
And organic light-emitting display device (OLED, Organic Light Emitting Display) Display).
Organic light-emitting display device possess self-luminous, high brightness, wide viewing angle, high-contrast, deflection,
The characteristics such as low energy consumption, therefore suffer from paying close attention to widely, and as a new generation display mode, have started to by
Gradually replace traditional liquid crystal display device, be widely used in mobile phone screen, computer monitor, full-color TV
Deng.OLED Display Technique is different from traditional LCD display mode, it is not necessary to backlight, uses the thinnest
Coating of organic material and glass substrate, when there being electric current to pass through, these organic materials will be luminous.
Major part OLED is to use DC driven at present, and hole and electronics enter from both positive and negative polarity respectively and send out
Photosphere, combines, radioluminescence in luminescent layer.As it is shown in figure 1, it is prior art sub-pixel
Structural representation.When grid (Gate) line of this journey pixel is opened, data (Date) line is to electric capacity
C is charged.The magnitude of voltage of electric capacity C, as the second grid voltage driving transistor T2, is controlled with this
System flows through the size of current of OLED.When display screen works, all of pixel the most persistently keeps luminous shape
State.
But, along with the time of use increases, have hole and electron accumulation at respective transport layer and luminescent layer
Interface, be internally formed built in field at OLED, increase the threshold voltage of OLED, reduce it luminous
Brightness.For oled panel, some region is particularly easy to therefore produce ghost (Image
Sticking), such as display television station's station symbol long-time on screen and the corner of advertisement, long-time display is static
The region of image will cause long-standing ghost because pixel age is different from other regions.
Summary of the invention
Therefore, it is an object of the invention to provide a kind of device reducing OLED display panel ghost,
During the display static pattern of some region of panel, shorten and need the OLED of the same pattern of long-time display luminous
Time, reduce the generation of ghost.
Another object of the present invention is to provide a kind of method reducing OLED display panel ghost, in face
During the display static pattern of some region of plate, when shortening the OLED luminescence needing the same pattern of long-time display
Between, reduce the generation of ghost.
For achieving the above object, the invention provides a kind of device reducing OLED display panel ghost,
Including: control unit, detecting unit and video data arrangement units；
This control unit receiving area control signal and time control signal, area control signal is used for determining
The size of target area, position, time control signal is used for determining that display static pattern is opened the most afterwards
Begin target area is carried out Special display；
This detecting unit receives raw image data, and detects whether this target area exists static pattern,
Target area image information after detection is sent into this video data arrangement units；
This video data arrangement units receives raw image data, also receives the control signal of this control unit
Target area image information with this detecting unit, it may be judged whether start the Special display of target area.
Wherein, this video data arrangement units does not carry out special handling to original image, and this OLED shows
Display panel normal image.
Wherein, target area is processed by this video data arrangement units, shows quiet in this target area
The pixel of state pattern is in different frame alternately luminescence.
Wherein, this detecting unit uses rim detection mode to detect whether this target area exists static map
Case.
Wherein, this device is integrated in time schedule controller.
Wherein, this device is individually present.
For achieving the above object, present invention also offers a kind of side reducing OLED display panel ghost
Method, including:
Step 1, detecting target area and display static pattern are set after start time of function；
Step 2, starting to detect target area, panel normally shows；
Step 3, when target area exists static pattern, and after showing certain time, start this target
The function of special displaying in region；
Step 4, the target area of display static pattern, neighbor is in different frame alternately luminescence；
Step 5, the most persistently detect target area, if static pattern exists always, hand over the most always
For display, if static pattern disappears, then stopping alternate display function, this OLED display panel shows
Normal image；Reenter step 2.
Wherein, this step 2 uses rim detection mode to detect whether this target area exists static pattern.
Wherein, the size and location of this target area determines according to demand.
Wherein, the size and location of this target area is automatically determined according to display image by time schedule controller.
In sum, the present invention reduces the apparatus and method of OLED display panel ghost display can be made quiet
The pixel light emission time of state pattern reduces half, thus reduces the generation of ghost, and does not interferes with panel
Overall display effect, it is possible to ensure beholder experience.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings, by the detailed description of the invention of the present invention is described in detail, will make the present invention's
Technical scheme and other beneficial effects are apparent.
In accompanying drawing,
Fig. 1 is the structural representation of prior art sub-pixel；
Fig. 2 is the structure square frame that the present invention reduces device one preferred embodiment of OLED display panel ghost
Figure；
Fig. 3 is the flow chart that the present invention reduces method one preferred embodiment of OLED display panel ghost；
Fig. 4 is that the present invention reduces the aobvious of the method one preferred embodiment n-th frame of OLED display panel ghost
Show effect schematic diagram；
Fig. 5 is method one preferred embodiment the (n+1)th frame that the present invention reduces OLED display panel ghost
Display effect schematic diagram.
Detailed description of the invention
Seeing Fig. 2, it reduces device one preferred embodiment of OLED display panel ghost for the present invention
Block diagram.This preferred embodiment specifically includes that control unit 10, detecting unit 20 and display number
According to arrangement units 30；This control unit 10 receiving area control signal and time control signal, region is controlled
Signal processed is for determining the size of target area, position, and time control signal is used for determining display static map
Case starts target area is carried out Special display the most afterwards；This detecting unit 20 receives original image number
According to, and detect whether this target area exists static pattern, the target area image information after detection is sent
Enter this video data arrangement units 30；This video data arrangement units 30 receives raw image data, also
Receive the control signal of this control unit 10 and the target area image information of this detecting unit 20, it is judged that
Whether start the Special display of target area.
Video data arrangement units 30 can not carry out special handling to original image, and this OLED shows
Display panel normal image.Target area can also be processed by this video data arrangement units 30, should
Target area showing, the pixel of static pattern is in different frame alternately luminescence.This detecting unit 20 can use
Any detection mode, such as rim detection etc., detects whether this target area exists static pattern.
This minimizing OLED display panel can be increased residual in the original drive system of OLED display panel
The device of shadow.Such as, this device can be integrated in time schedule controller；This device can also independently be deposited
?.
The present invention reduces the device counter plate of OLED display panel ghost and is easier to produce the region of ghost
Detect, after this region display static pattern being detected, at the pixel to display static pattern
Reason, these pixels are in different frame alternately luminescence, luminescence when each pixel is different with neighbor.
Seeing Fig. 3, it reduces method one preferred embodiment of OLED display panel ghost for the present invention
Flow chart.Seeing Fig. 3, the method specifically includes that
Step 1, detecting target area and display static pattern are set after start time of function；
Step 2, starting to detect target area, panel normally shows；
Step 3, when target area exists static pattern, and after showing certain time, start this target
The function of special displaying in region；
Step 4, the target area of display static pattern, neighbor is in different frame alternately luminescence；
Step 5, the most persistently detect target area, if static pattern exists always, hand over the most always
For display, if static pattern disappears, then stopping alternate display function, this OLED display panel shows
Normal image；Reenter step 2.
To use rim detection mode, this step 2 can detect whether this target area exists static pattern.
The method is for being easier to produce the region of ghost in panel, such as: need to show for a long time TV
Platform station symbol or four angles of advertisement, carry out special handling.The image that counter plate shows is detected, and works as inspection
Measure when there is static pattern in target area, i.e. startup processes function.Use the design of the present invention,
For static region, neighbor alternately luminescence.Picture i.e. inside a frame time, in stationary pattern
Element only half is luminous, next frame then other half pixel light emission.The size and location of target area all may be used
Determine according to demand, it might even be possible to for whole panel.Detection area can be set in advance, it is possible to by time
Sequence controller automatically determines according to display image.
The application present invention reduces device or the method for OLED display panel ghost: can avoid changing pixel
Structure, can be applicable to various AMOLED panel；Panel aperture opening ratio will not be reduced；Hold in panel
The region of ghost easily occurs, practical；Only small region can be detected, take resource few, easily
In realization；Only the static pattern of long-time display is processed, such as television station's station symbol, advertisement etc., right
Overall display effect impact is little.
Seeing Fig. 4 and Fig. 5, Fig. 4, to be that the present invention reduces the method one of OLED display panel ghost preferable
The display effect schematic diagram of embodiment n-th frame, Fig. 5 is the display effect schematic diagram of the (n+1)th frame.In figure
As a example by the pixel region of 10*10, in figure, each grid represents a pixel.If in the drawings
In the pixel region of 10*10, detect that the region in frame is shown that static pattern, through a timing
After between (this time value can set), the pixel of this area of the pattern starts in different frame alternately luminescence,
Each pixel and neighbor have different luminances.In n-th frame, as shown in Figure 4；Then
N+1 frame, as shown in Figure 5.Non-static region normally shows, in frame in marked region, and black picture element generation
Table 0 GTG, white pixel represents normal luminous.The region neighbor of display static pattern is alternately sent out
Light, in this region, the fluorescent lifetime of each pixel halves, and improves ghost situation with this.
In sum, after the application present invention reduces device or the method for OLED display panel ghost, when than
When being easier to that the region of generation ghost exists static pattern, the pixel light emission of display static pattern can be made
Time reduces half, thus reduces the generation of ghost.And these static pattern are carried out such as reason, such as TV
Platform station symbol, advertisement etc., can't affect the overall display effect of panel, it is possible to ensures the use of beholder
Experience..
The above, for the person of ordinary skill of the art, can be according to the technical side of the present invention
Other various corresponding changes and deformation are made in case and technology design, and all these change and deformation are all answered
Belong to the protection domain of appended claims of the present invention.
Claims (10)
1. the device reducing OLED display panel ghost, it is characterised in that including: control single
Unit, detecting unit and video data arrangement units；
This control unit receiving area control signal and time control signal, area control signal is used for determining
The size of target area, position, time control signal is used for determining that display static pattern is opened the most afterwards
Begin target area is carried out Special display；
This detecting unit receives raw image data, and detects whether this target area exists static pattern,
Target area image information after detection is sent into this video data arrangement units；
This video data arrangement units receives raw image data, also receives the control signal of this control unit
Target area image information with this detecting unit, it may be judged whether start the Special display of target area.
2. the device reducing OLED display panel ghost as claimed in claim 1, it is characterised in that
This video data arrangement units does not carry out special handling to original image, and this OLED display panel shows general
Logical image.
3. the device reducing OLED display panel ghost as claimed in claim 1, it is characterised in that
Target area is processed by this video data arrangement units, shows the picture of static pattern in this target area
Element is in different frame alternately luminescence.
4. the device reducing OLED display panel ghost as claimed in claim 1, it is characterised in that
This detecting unit uses rim detection mode to detect whether this target area exists static pattern.
5. the device reducing OLED display panel ghost as claimed in claim 1, it is characterised in that
This device is integrated in time schedule controller.
6. the device reducing OLED display panel ghost as claimed in claim 1, it is characterised in that
This device is individually present.
7. the method reducing OLED display panel ghost, it is characterised in that including:
Step 1, detecting target area and display static pattern are set after start time of function；
Step 2, starting to detect target area, panel normally shows；
Step 3, when target area exists static pattern, and after showing certain time, start this target
The function of special displaying in region；
Step 4, the target area of display static pattern, neighbor is in different frame alternately luminescence；
Step 5, the most persistently detect target area, if static pattern exists always, hand over the most always
For display, if static pattern disappears, then stopping alternate display function, this OLED display panel shows
Normal image；Reenter step 2.
8. the method reducing OLED display panel ghost as claimed in claim 7, it is characterised in that
This step 2 uses rim detection mode to detect whether this target area exists static pattern.
9. the method reducing OLED display panel ghost as claimed in claim 7, it is characterised in that
The size and location of this target area determines according to demand.
10. the method reducing OLED display panel ghost as claimed in claim 7, its feature exists
In, the size and location of this target area is automatically determined according to display image by time schedule controller.
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| CN201610439504.2A CN106023887B (en) | 2016-06-16 | 2016-06-16 | Reduce the device and method of OLED display panel ghost |
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| CN201610439504.2A CN106023887B (en) | 2016-06-16 | 2016-06-16 | Reduce the device and method of OLED display panel ghost |
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| CN106023887A true CN106023887A (en) | 2016-10-12 |
| CN106023887B CN106023887B (en) | 2018-07-10 |
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| CN106023887B (en) | 2018-07-10 |
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