CN109065568A - A kind of WOLED panel and WOLED display device - Google Patents
A kind of WOLED panel and WOLED display device Download PDFInfo
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- CN109065568A CN109065568A CN201810739127.3A CN201810739127A CN109065568A CN 109065568 A CN109065568 A CN 109065568A CN 201810739127 A CN201810739127 A CN 201810739127A CN 109065568 A CN109065568 A CN 109065568A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the invention provides a kind of WOLED panel and WOLED display devices, are related to OLED technology field.Wherein, WOLED panel includes multiple pixel units, and each pixel unit in multiple pixel units includes red sub-pixel, white sub-pixels, blue subpixels and green sub-pixels, and the area of red sub-pixel is greater than the area of blue subpixels；The area of red sub-pixel is greater than the area of green sub-pixels；Area difference between red sub-pixel and white sub-pixels is less than or equal to preset area.The area that the present invention passes through increase red sub-pixel, to which when being displayed in red, no need to increase the driving currents of pixel unit, after being displayed in red for a long time, the luminescent material region of the pixel unit will be close with the loss rate in luminescent material region of other pixel units, to which the display brightness between the pixel unit and other pixel units is essentially identical, and then the pixel unit can be avoided when showing other colors and serious ghost occur.
Description
Technical field
The present invention relates to OLED technology fields, more particularly to a kind of WOLED panel and WOLED display device.
Background technique
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display device because its self-luminous,
The advantages that low energy consumption is the research hotspot in current electroluminance display field.Wherein, WOLED (White Organic Light-
Emitting Diode, white organic LED) display device can use white light emitting material as light source, and white light is saturating
The light of three kinds of colors of red, green, blue can be formed by crossing color filter film, meanwhile, white light can also be directed through color filter film
Upper transparent region, so that WOLED display device can be displayed in red by red sub-pixel, passes through to emit white light
Green sub-pixels display green, is displayed in blue, and improve picture brightness by white sub-pixels by blue subpixels.
Typically for any pixel unit in WOLED display device, the area of red sub-pixel is logical in the pixel unit
It is often smaller.However, since the energy of red band in white light is lower relative to other color bands, and the luminous efficiency of feux rouges compared with
Low, therefore, pixel unit needs bigger electric current to be driven when being displayed in red, in this way, for the picture being displayed in red for a long time
Plain unit, the luminescent material region of the pixel unit by the luminescent material area loss than other pixel units faster.Pixel list
Luminance difference will be present between the pixel unit and other pixel units after being displayed in red for a long time in member, thus the pixel
Unit will appear as serious ghost when showing other colors.
Summary of the invention
In view of the above problems, the face WOLED that the embodiment of the present invention at least overcomes the above problem in order to provide one kind is proposed
Plate and WOLED display device, to solve the problems, such as to generate serious ghost after pixel unit is displayed in red for a long time.
According to the first aspect of the invention, a kind of WOLED panel, including multiple pixel units, the multiple picture are provided
Each pixel unit in plain unit includes red sub-pixel, white sub-pixels, blue subpixels and green sub-pixels；
The area of the red sub-pixel is greater than the area of the blue subpixels；
The area of the red sub-pixel is greater than the area of the green sub-pixels；
Area difference between the red sub-pixel and the white sub-pixels is less than or equal to preset area.
Optionally, the preset area is 0.2 times of the area of the white sub-pixels.
Optionally, the area ratio of the red sub-pixel and the green sub-pixels is greater than or equal to 1.6, and be less than or
Equal to 1.8.
Optionally, the area ratio of the white sub-pixels and the green sub-pixels is greater than or equal to 1.6, and be less than or
Equal to 1.8.
Optionally, the area ratio of the blue subpixels and the green sub-pixels is greater than or equal to 1, and is less than or waits
In 1.3.
Optionally, the area ratio of red sub-pixel and the white sub-pixels is greater than or equal to 0.9, and is less than or equal to
1.1。
Optionally, the red sub-pixel, the white sub-pixels, the blue subpixels and the green sub-pixels
Area ratio is 1.8:1.7:1.2:1.
According to the second aspect of the invention, a kind of WOLED display device is provided, the WOLED display device includes upper
State any WOLED panel.
The embodiment of the present invention includes following advantages:
In WOLED panel provided in an embodiment of the present invention, the area of red sub-pixel can be greater than blue subpixels
Area, and the area of red sub-pixel can be greater than the area of each green sub-pixels, in addition, red sub-pixel and the sub- picture of white
Area difference between element can be less than or equal to preset area.By increasing the area of red sub-pixel, thus red showing
No need to increase the driving currents of pixel unit when color, and then after being displayed in red for a long time, the luminescent material area of the pixel unit
Domain will be close with the loss rate in luminescent material region of other pixel units.Pixel unit after being displayed in red for a long time,
Display brightness between the pixel unit and other pixel units is essentially identical, so that the pixel unit is showing other colors
When, it can be avoided and serious ghost occur.
Detailed description of the invention
Fig. 1 is a kind of pixel schematic diagram of WOLED panel provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of a pixel unit in WOLED panel provided in an embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Before the embodiment of the present invention is described in detail, it is situated between first to the dot structure of existing WOLED panel
It continues.In existing WOLED panel, red sub-pixel, white sub-pixels, the area ratio of blue subpixels and green sub-pixels
Usually 1.5:2:1.7:1 namely white sub-pixels area are maximum, and red sub-pixel area is smaller, is only second to green sub-pixels.
Ghost test can be carried out to existing WOLED panel, specifically, WOLED panel can be identical 4 in area
Test zone is displayed in red respectively, is green, is blue and white, and this 4 test zones can be shown by maximum brightness
Show.Meanwhile for other undercolor regions except this 4 test zones, can be displayed in white by 50% brightness.Through too long
Time it is continuously display after, under white graph card observe 4 test zones ghost degree, that is to say the institute of WOLED panel
When having pixel unit to be displayed in white with 50% brightness, the ghost degree of 4 test zones is observed.When observing certain
When the ghost degree of a test zone reaches ghost criterion, it is aobvious can be determined as WOLED panel for continuously display duration
The decaying duration of luminous material layer when showing the test zone corresponding color.
Carry out ghost to existing WOLED panel and test available following test results: blue subpixels reach ghost
The decaying duration longest of criterion, followed by green sub-pixels, corresponding decaying duration are about 0.8 times of blue subpixels,
It is white sub-pixels again, corresponding decaying duration is about 0.7 times of blue subpixels, the corresponding decaying duration of red sub-pixel
It is most short, about 0.5 times of blue subpixels.
Existing WOLED panel can show yellow map after continuously display white background red block graph card 500 hours
Card, it can be observed that original shown in red block is shown as apparent green namely existing WOLED under yellow graph card
Panel serious ghost will occur after being displayed in red picture for a long time.Therefore, for above-mentioned dot structure and ghost test result,
The WOLED panel and WOLED display device in the embodiment of the present invention are proposed, is shown for a long time with solving existing WOLED panel
The problem of will appear serious ghost after red picture.
Embodiment one
Referring to Fig.1, a kind of pixel schematic diagram of WOLED panel is shown, which may include multiple pixel lists
Member, each pixel unit in multiple pixel units may each comprise red sub-pixel R (Red), white sub-pixels W (White),
Blue subpixels B (Blue) and green sub-pixels G (Green).
Wherein, the area of red sub-pixel R is greater than the area of blue subpixels B, and the area of red sub-pixel R is greater than green
The ratio that the area namely red sub-pixel R of sub-pixels G accounts for pixel unit P is greater than blue subpixels B and green sub-pixels G.
In addition, the area difference between red sub-pixel R and white sub-pixels W is less than or equal to preset area namely red sub-pixel R
Suitable with the area of white sub-pixels W, the area of red sub-pixel R can be more slightly larger or smaller than the area of white sub-pixels W.?
In practical application, preset area can be 0.2 times of the area of white sub-pixels W, and optionally, preset area is white sub-pixels
0.1 times of the area of W.
Area ratio between different colours sub-pixel can control within the scope of certain, to improve red sub- picture
While vegetarian noodles product, guarantee the luminous efficiency of other color sub-pixels.Specifically, the area of red sub-pixel and green sub-pixels
The ratio between can be greater than or equal to 1.6, and be less than or equal to 1.8.The area ratio of white sub-pixels and green sub-pixels can be big
In or be equal to 1.6, and be less than or equal to 1.8.The area ratio of blue subpixels and green sub-pixels can be greater than or equal to 1,
And it is less than or equal to 1.3.The area ratio of red sub-pixel and white sub-pixels can be greater than or equal to 0.9, and be less than or wait
Area difference between 1.1 namely red sub-pixel and white sub-pixels is less than or equal to the 0.1 of white sub-pixels area
Times, to guarantee that red sub-pixel R is suitable with the area of white sub-pixels W.
In WOLED panel, luminescent material is higher for the luminous efficiency of green light, and feux rouges is secondly, blue light is minimum, and blue light
Energy highest, therefore green light, comprehensively considers the luminous efficiency and energy of different colours light secondly, feux rouges is minimum, can will
Green sub-pixels are set as the smallest sub-pixel of area in 4 sub-pixels, and the areas of blue subpixels is secondly, red sub-pixel
Area is maximum.Wherein, in order to guarantee show picture brightness, the area of white sub-pixels should be arranged larger, can with it is red
The area of sub-pixels is suitable, also can be more slightly larger or smaller than red sub-pixel.
In general, the fabrication processing of WOLED panel are as follows: production driving TFT (the Thin Film on substrate
Transistor, thin film transistor (TFT)), flatness layer, anode, pixel defining layer, luminous material layer, cathode are then successively made, from
And available WOLED panel.In practical applications, each subpixel area can be marked off by pixel defining layer, thus
In a pixel unit, the subpixel area of different area can be marked off, to respectively correspond different colors.
It should be noted that in the WOLED panel made of reality, in order to cooperate the shape of each layer device, each height picture
Element is not the quadrangle framework of rule, and the sub-pixel framework of usually irregular shape.
By increasing the area of red sub-pixel, thus when being displayed in red no need to increase the driving current of pixel unit,
And then after being displayed in red for a long time, the luminescent material region of the pixel unit is by the luminescent material region with other pixel units
Loss rate it is close.Pixel unit is aobvious between the pixel unit and other pixel units after being displayed in red for a long time
Show that brightness is essentially identical, so that the pixel unit there will not be serious ghost when showing other colors.
Fig. 2 shows the schematic diagrames of a pixel unit P in WOLED panel, referring to Fig. 2, red sub-pixel R, white
The area ratio of pixel W, blue subpixels B and green sub-pixels G can be 1.8:1.7:1.2:1.
Ghost test can be carried out to the WOLED display device of the sub-pixel area ratio.Specifically, WOLED is shown
Device can be displayed in red respectively in identical 4 test zones of area, is green, is blue and white, and this 4 test zones can
To be shown by maximum brightness.Meanwhile for other undercolor regions except this 4 test zones, can pass through
50% brightness is displayed in white.By it is prolonged it is continuously display after, the ghost of 4 test zones is observed under white graph card
Degree, when that is to say that all pixels unit of WOLED display device is displayed in white with 50% brightness, to 4 test zones
Ghost degree observed.When the ghost degree for observing some test zone reaches ghost criterion, can will hold
The duration of continuous display, is determined as the decaying duration of luminous material layer when WOLED display device shows the test zone corresponding color.
It is tested by ghost, when WOLED display device is displayed in red and is blue, duration needed for reaching identical ghost degree
Essentially identical, the corresponding duration of white is about 0.95 times of blue, and the corresponding duration of green is about 0.96 times of blue.By ghost
Test result as it can be seen that WOLED display device be displayed in red, white, blue, green picture when, the die-away time of luminous material layer
When essentially identical namely luminous material layer is excited and shows different colours picture, the loss rate of luminescent material is essentially identical,
After long-term display, picture does not easily cause luminance difference, so as to avoid the occurrence of serious ghost, improves display effect.
In addition, in the WOLED display device that red, white, blue, green sub-pixels area ratios are 1.8:1.7:1.2:1,
While increasing red sub-pixel area, other colors can also be accordingly adjusted according to the ghost effect of other colored pictures
The area of sub-pixel, so that luminous material layer shows that the loss rate of different colours picture is essentially identical, thus through too long
After phase display, the picture of the WOLED display device does not easily cause luminance difference, and display effect greatly promotes.
It is that the WOLED display device of 1.8:1.7:1.2:1 exists to examine red, white, blue, green sub-pixels area ratios
The ghost effect being displayed in red after picture for a long time can individually carry out the ghost of red picture to the WOLED display device
Test.The WOLED display device can show white background red block graph card first, that is to say a part of in WOLED display device
Pixel unit is displayed in red, and other parts are displayed in white.After continuously display 500 hours, WOLED display device can be shown
Show yellow graph card, that is to say that pixel unit all in WOLED display device shows yellow.It can be observed under yellow graph card
Unconspicuous green is shown as to original shown in red block namely WOLED display device is displayed in red picture for a long time
After be not in serious ghost.
White light emitting material can be set in the luminous material layer of WOLED panel, wherein white light emitting material can be
The homogenous material of white electroluminescence, it is of course also possible to be the combination of two or three of different colours luminescent material, thus complementary
Wave band obtains white light, and the embodiment of the present invention is not specifically limited in this embodiment.
The embodiment of the present invention includes following advantages:
In WOLED panel provided in an embodiment of the present invention, the area of red sub-pixel can be greater than blue subpixels
Area, and the area of red sub-pixel can be greater than the area of each green sub-pixels, in addition, red sub-pixel and the sub- picture of white
Area difference between element can be less than or equal to preset area.By increasing the area of red sub-pixel, thus red showing
No need to increase the driving currents of pixel unit when color, and then after being displayed in red for a long time, the luminescent material area of the pixel unit
Domain will be close with the loss rate in luminescent material region of other pixel units.Pixel unit after being displayed in red for a long time,
Display brightness between the pixel unit and other pixel units is essentially identical, so that the pixel unit is showing other colors
When, it can be avoided and serious ghost occur.
Embodiment two
The embodiment of the invention also provides a kind of WOLED display devices, which may include any of the above-described
The WOLED panel.
The embodiment of the present invention includes following advantages:
In WOLED display device provided in an embodiment of the present invention, the area of red sub-pixel can be greater than the sub- picture of blue
The area of element, and the area of red sub-pixel can be greater than the area of each green sub-pixels, in addition, red sub-pixel and white
Area difference between sub-pixel can be less than or equal to preset area.By increasing the area of red sub-pixel, thus aobvious
No need to increase the driving currents of pixel unit when showing red, and then after being displayed in red for a long time, the luminous material of the pixel unit
Expect that region will be close with the loss rate in luminescent material region of other pixel units.Pixel unit is being displayed in red it for a long time
Afterwards, the display brightness between the pixel unit and other pixel units is essentially identical, so that the pixel unit is showing other face
When color, it can be avoided and serious ghost occur.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of WOLED panel provided by the present invention and a kind of WOLED display device, it is described in detail,
Used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only used
In facilitating the understanding of the method and its core concept of the invention；At the same time, for those skilled in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as
Limitation of the present invention.
Claims (8)
1. a kind of WOLED panel, including multiple pixel units, each pixel unit in the multiple pixel unit includes red
Sub-pixel, white sub-pixels, blue subpixels and green sub-pixels, which is characterized in that
The area of the red sub-pixel is greater than the area of the blue subpixels；
The area of the red sub-pixel is greater than the area of the green sub-pixels；
Area difference between the red sub-pixel and the white sub-pixels is less than or equal to preset area.
2. WOLED panel according to claim 1, which is characterized in that the preset area is the white sub-pixels
0.2 times of area.
3. WOLED panel according to claim 1, which is characterized in that the red sub-pixel and the green sub-pixels
Area ratio be greater than or equal to 1.6, and be less than or equal to 1.8.
4. WOLED panel according to claim 1, which is characterized in that the white sub-pixels and the green sub-pixels
Area ratio be greater than or equal to 1.6, and be less than or equal to 1.8.
5. WOLED panel according to claim 1, which is characterized in that the blue subpixels and the green sub-pixels
Area ratio be greater than or equal to 1, and be less than or equal to 1.3.
6. WOLED panel according to claim 1, which is characterized in that the red sub-pixel and the white sub-pixels
Area ratio be greater than or equal to 0.9, and be less than or equal to 1.1.
7. WOLED panel according to claim 1, which is characterized in that the red sub-pixel, the white sub-pixels,
The area ratio of the blue subpixels and the green sub-pixels is 1.8: 1.7: 1.2: 1.
8. a kind of WOLED display device, which is characterized in that the WOLED display device includes that claim 1 to 7 is any described
WOLED panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810739127.3A CN109065568B (en) | 2018-07-06 | 2018-07-06 | WOLED panel and WOLED display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810739127.3A CN109065568B (en) | 2018-07-06 | 2018-07-06 | WOLED panel and WOLED display device |
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| CN109065568A true CN109065568A (en) | 2018-12-21 |
| CN109065568B CN109065568B (en) | 2021-04-06 |
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| CN201810739127.3A Active CN109065568B (en) | 2018-07-06 | 2018-07-06 | WOLED panel and WOLED display device |
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| CN110444574A (en) * | 2019-08-14 | 2019-11-12 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN112599096A (en) * | 2020-12-31 | 2021-04-02 | 长沙惠科光电有限公司 | Pixel driving structure, pixel driving method and display device |
| CN112930564A (en) * | 2019-08-01 | 2021-06-08 | 海信视像科技股份有限公司 | Image display device and image processing method |
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| CN112930564A (en) * | 2019-08-01 | 2021-06-08 | 海信视像科技股份有限公司 | Image display device and image processing method |
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| CN109065568B (en) | 2021-04-06 |
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