CN107731880A - A kind of organic EL display panel and its driving method, display device - Google Patents
A kind of organic EL display panel and its driving method, display device Download PDFInfo
- Publication number
- CN107731880A CN107731880A CN201711069984.9A CN201711069984A CN107731880A CN 107731880 A CN107731880 A CN 107731880A CN 201711069984 A CN201711069984 A CN 201711069984A CN 107731880 A CN107731880 A CN 107731880A
- Authority
- CN
- China
- Prior art keywords
- light
- sensitive device
- sub
- photosensitive
- pixel unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sustainable Development (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of organic EL display panel and its driving method, display device, at least two light-sensitive devices are set in photosensitive detection unit corresponding with sub-pixel unit, and the photosensitive degree for belonging at least two light-sensitive devices of same photosensitive detection unit is different.Light-sensitive device with not photosensitive degree corresponds to different grey-scale ranges respectively, and the photosensitive degree of the light-sensitive device of corresponding lower grey-scale range is higher, and therefore, the electric signal of the light-sensitive device output of corresponding more high gray scope is more not easy to reach saturation.The actual light emission luminance value of sub-pixel unit can be determined according to the photosensitive degree of each light-sensitive device in photosensitive detection unit；Afterwards according to the actual light emission luminance value for the sub-pixel unit determined and demarcation brightness value set in advance, the driving voltage of sub-pixel unit is adjusted.It is thus possible to be made a distinction for different GTGs using the light-sensitive device of not photosensitive degree to brightness, ensure the accuracy that light-sensitive device adjusts to display picture.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of organic EL display panel and its driving method,
Display device.
Background technology
At present, due to meeting in organic EL display panel (OLED, Organic Light-Emitting Diode)
Using oxide thin film transistor (TFT, Thin Film Transistor), its Property comparison is unstable, with usage time
The parameter such as growth, the threshold voltage vt h and mobility Mob of thin film transistor (TFT) can exist drift and change so that feeding mark
Under quasi- voltage, it is difficult to realize desired current value, so as to which desired grey menu can not be realized, cause the picture element of display can produce
Brightness is inconsistent, causes picture abnormal and influences display.In order to realize normal display picture, it is necessary to enter to thin film transistor (TFT) TFT
Row electric compensation.Although Vth and Mob influence can be reduced by external circuit compensation, in organic electroluminescence device
Luminescent material EL can also have the phenomenon of aging.And external circuit compensation can only compensation film transistor pipe characteristic, can not
The influence of EL equivalent life agings is compensated, causes final display effect unsatisfactory.
The content of the invention
In view of this, the embodiments of the invention provide a kind of organic EL display panel and its driving method, display
Device, to solve the problems, such as that the display effect of existing organic EL display panel is undesirable.
Therefore, the embodiments of the invention provide a kind of organic EL display panel, including：Multiple sub-pixel units,
And multiple photosensitive detection units corresponding with the sub-pixel unit；
Each photosensitive detection unit includes at least two light-sensitive devices, and belongs to the same photosensitive detection unit extremely
The photosensitive degree of few two light-sensitive devices is different.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, in the same photosensitive detection unit, the light receiving area of each light-sensitive device is different.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, in the same photosensitive detection unit, the area of the photosurface of each light-sensitive device is different, and each described photosensitive
The entire area of the photosurface of device is the light receiving area.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, in the same photosensitive detection unit, the area of the photosurface of each light-sensitive device is identical；
In the same photosensitive detection unit, barrier bed is provided with the photosurface of at least one light-sensitive device；
And during in the presence of being provided with barrier bed on the photosurface of at least two light-sensitive devices, each barrier bed has different area
Open area, the area of the open area is as the light receiving area.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, the barrier bed is metal level or black matrix.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, the photosurface of the barrier bed and the light-sensitive device contacts with each other.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, the photosensitive detection unit is located between the sub-pixel unit of adjacent column.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, in the same photosensitive detection unit, the distance between each light-sensitive device and the adjacent sub-pixel unit are each
Differ.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, the photosensitive detection unit is located between the sub-pixel unit of adjacent lines.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, the photosensitive detection unit corresponds with the sub-pixel unit.
In a kind of possible implementation, in above-mentioned organic EL display panel provided in an embodiment of the present invention
In, each photosensitive detection unit includes two light-sensitive devices.
On the other hand, the embodiment of the present invention additionally provides a kind of display device, including provided in an embodiment of the present invention above-mentioned
Organic EL display panel.
On the other hand, the embodiment of the present invention additionally provides a kind of driving method of above-mentioned organic EL display panel,
Including：
Obtain the electric signal of each light-sensitive device output in photosensitive detection unit corresponding with the sub-pixel unit；
According to the photosensitive degree of each light-sensitive device in the photosensitive detection unit, and each light-sensitive device output
Electric signal, determine the actual light emission luminance value of the sub-pixel unit；
According to the actual light emission luminance value for the sub-pixel unit determined and demarcation brightness value set in advance, to institute
The driving voltage for stating sub-pixel unit is adjusted.
It is described according to institute in above-mentioned driving method provided in an embodiment of the present invention in a kind of possible implementation
The photosensitive degree of each light-sensitive device in photosensitive detection unit, and the electric signal of each light-sensitive device output are stated, it is determined that
The actual light emission luminance value of the sub-pixel unit, is specifically included：
Whether the electric signal for determining each light-sensitive device output is unsaturation electric signal；
The electric signal that the maximum light-sensitive device of photosensitive degree in the light-sensitive device for exporting unsaturation electric signal is exported is corresponding
Actual light emission luminance value of the brightness value as the sub-pixel unit.
In a kind of possible implementation, in above-mentioned driving method provided in an embodiment of the present invention, the basis is true
The actual light emission luminance value for the sub-pixel unit made and demarcation brightness value set in advance, to the sub-pixel unit
Driving voltage is adjusted, and is specifically included：
When it is determined that the actual light emission luminance value of the sub-pixel unit is more than demarcation brightness value set in advance, institute is turned down
State the driving voltage of sub-pixel unit；
When it is determined that the actual light emission luminance value of the sub-pixel unit is less than demarcation brightness value set in advance, institute is heightened
State the driving voltage of sub-pixel unit；
When it is determined that the actual light emission luminance value of the sub-pixel unit is equal to demarcation brightness value set in advance, institute is kept
State the driving voltage of sub-pixel unit.
The beneficial effect of the embodiment of the present invention includes：
A kind of organic EL display panel provided in an embodiment of the present invention and its driving method, display device, with
At least two light-sensitive devices are set in photosensitive detection unit corresponding to sub-pixel unit, and belong to same photosensitive detection unit extremely
The photosensitive degree of few two light-sensitive devices is different, and photosensitive degree does not refer to that luminous intensity can be received within the unit interval
Degree is different.Light-sensitive device with not photosensitive degree corresponds to different grey-scale ranges, the light of corresponding lower grey-scale range respectively
The photosensitive degree of sensing device is higher, therefore, under equal conditions, the electric signal of the light-sensitive device output of corresponding lower grey-scale range
More first reach saturation, the electric signal of the light-sensitive device output of corresponding more high gray scope is more not easy to reach saturation.So, carrying out
, can be according to the photosensitive degree of each light-sensitive device in photosensitive detection unit and each photosensitive during the brightness detection of sub-pixel unit
The electric signal of device output, determine the actual light emission luminance value of sub-pixel unit；Afterwards according to the sub-pixel unit determined
Actual light emission luminance value and demarcation brightness value set in advance, are adjusted to the driving voltage of sub-pixel unit.It is thus possible to
Brightness is made a distinction using the light-sensitive device of not photosensitive degree for different GTGs, ensures that light-sensitive device is adjusted to display picture
Whole accuracy.
Brief description of the drawings
Fig. 1 is the structural representation of organic EL display panel of the prior art；
Fig. 2 is the graph of relation of brightness of the prior art and GTG；
Fig. 3 is the circuit structure diagram of photosensitive detection unit in the prior art；
Fig. 4 to Fig. 7 is respectively the structural representation of organic EL display panel provided in an embodiment of the present invention；
Fig. 8 is the partial structural diagram of organic EL display panel provided in an embodiment of the present invention；
Fig. 9 is the flow chart of driving method provided in an embodiment of the present invention.
Embodiment
At present, as shown in figure 1, placing a light-sensitive device using on the red R of each sub-pix, green G, blue B and white W periphery
Sensor R (G, B or W), such as photosensitive TFT devices can be used, go to monitor each sub-pix R, G, B and W luminance in real time
Degree, is adjusted in real time.
Therefore, it is necessary first to each light-sensitive device Sensor R (G, B or W) set need monitor sub-pix R, G,
Light-sensitive device Sensor R (G, B corresponding to B and W gamma (Gamma) curve values (gamma curve value is corresponding grey decision-making)
Or W) (photocurrent values and brightness value have a fixed corresponding relation, therefore can be with when obtaining photoelectric current for the photoelectric current experienced
Obtain brightness value), the demarcation of light-sensitive device is carried out, that is, determines the demarcation brightness value A of light-sensitive device.From the brightness of 0~255 GTG
Change light-sensitive device will have one-to-one brightness value.
Afterwards, it is monitored by brightness of the light-sensitive device to sub-pix, as shown in Fig. 2 the reality for obtaining sub-pix is bright
Angle value B (C).Judge whether the brightness of sub-pix meets to require according to intrinsic brilliance value B (C) and demarcation brightness value A；Will if meeting
Ask, then need not adjust the driving voltage of sub-pix；If brightness has deviation, such as bigger than normal, i.e. it is bright that intrinsic brilliance value C is more than demarcation
Angle value A, then the driving voltage of sub-pix is turned down, light-sensitive device is monitored to the brightness of sub-pix again, after obtaining photoelectric current
Again compared with demarcating brightness value, so circulation, adjust repeatedly.So that the change of intrinsic brilliance value and demarcation brightness value over time
Turn to close state.Normal display picture can thus be kept.
Specifically, the detection circuit of light-sensitive device as shown in figure 3, one end of light-sensitive device is connected current potential Vo, Vo mono-
As loading -5V-0, for controlling the reverse-biased of light-sensitive device, by the product of certain time after illumination is mapped to light-sensitive device
Point, light-sensitive device produces optical charge, and when scan line Gate is opened, optical charge caused by light-sensitive device will be transferred to integration electricity
The electric capacity C on road, is changed into voltage signal, after analog-digital converter ADC, output to reading signal wire Raw Data.In difference
Different current values are had under illumination, in the unit interval to produce, and illumination is bigger, photoelectric current is bigger.And specifically connect with light-sensitive device
The storage capacitance Cst connect typically has the capacitance of a fixed storage ability.When under small gray-scale intensity, storage capacitance will not reach
To storage cap；When big gray-scale intensity, storage capacitance is easy to light intensity saturation occur, after reaching saturation, as scan line Gate
During unlatching, the optical charge that light-sensitive device is output to the electric capacity C of integrating circuit is fixed amount.
Also, due to pixel, corresponding brightness value is of different sizes under low GTG and high gray, and GTG is higher, and brightness value is got over
Greatly, the photocurrent values of such light-sensitive device generation are bigger.Thus can have a problem that, under low GTG, because light is weaker, if
Light-sensitive device is allowd to experience certain value, it is necessary to which the irradiation time of light-sensitive device is accumulated, when running up to one
Fix time, such as 100ms, rear end detection circuit goes to read this value again, and the dim light of so low GTG is with regard to that can be read into.But with
The increase of GTG, under time of integration fixing situation, current value can be very big, and saturation occurs in the storage capacitance of light-sensitive device, so
Reach certain GTG, and it is also bigger than this critical GTG when, what is obtained is all the current value of saturation.So can not be in high gray
Brightness is made a distinction, so as to cause the modulation failure of the GTG of light-sensitive device.
The embodiments of the invention provide a kind of organic EL display panel and its driving method, display device.In order to
Make the purpose of the present invention, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings, to Organic Electricity provided in an embodiment of the present invention
The embodiment of photoluminescence display panel, its driving method and display device is described in detail.It is it should be appreciated that following
Described preferred embodiment is merely to illustrate and explain the present invention, and is not intended to limit the present invention.And in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
The shapes and sizes of each part do not react actual proportions in accompanying drawing, and purpose is schematically illustrate present invention.
A kind of organic EL display panel provided in an embodiment of the present invention, as shown in figure 4, including：Multiple sub-pixs
Unit 1, and multiple photosensitive detection units 2 corresponding with sub-pixel unit 1；
Each photosensitive detection unit 2 includes at least two light-sensitive devices 21, and belongs at least the two of same photosensitive detection unit 2
The photosensitive degree (being made a distinction by different filling patterns) of individual light-sensitive device 21 is different.
Specifically, in above-mentioned organic EL display panel provided in an embodiment of the present invention, light-sensitive device 21 can be with
Its function is realized using photosensitive TFT devices, or photosensitive PIN devices, not limited herein.Show that each photosensitive detection is single in Fig. 4
Member 2 includes the situation of two photosensitive mutually different light-sensitive devices 21 of degree.In practical operation, it is also possible to occur belonging to same
The photosensitive degree identical situation of two light-sensitive devices 21 of one photosensitive detection unit 2, is not limited herein.
Specifically, in above-mentioned organic EL display panel provided in an embodiment of the present invention, each light-sensitive device 21
Photosensitive degree is different to be referred to：The degree that each light-sensitive device 21 can receive luminous intensity within the unit interval is different.Specifically may be used
Be within the unit interval light-sensitive device 21 can receive luminous intensity the more big then photosensitive degree of degree it is bigger, or can be in list
In the time of position light-sensitive device 21 accumulate light is more, the more fast then photosensitive degree of speed is bigger.That is, reach light-sensitive device 21
Light integration time more short then photosensitive degree needed for the electrical value that can be detected is bigger.
Specifically, in above-mentioned organic EL display panel provided in an embodiment of the present invention, there is not photosensitive journey
The light-sensitive device 21 of degree corresponds to different grey-scale ranges respectively, can make the brightness value in different grey-scale ranges by not photosensitive degree
Light-sensitive device go to detect.The photosensitive degree of the light-sensitive device 21 of corresponding lower grey-scale range is higher, such as can be by 0~255
GTG is divided into two grey-scale ranges, i.e., low grey-scale range and high gray scope, and low grey-scale range is 0~125, corresponding photosensitive journey
High light-sensitive device is spent, high gray scope is 126~255, the low light-sensitive device of corresponding photosensitive degree.Therefore, in equal conditions
Under, the electric signal that the light-sensitive device 21 of corresponding lower grey-scale range exports more easily makes the storage capacitance Cst of connection first reach full
With the electric signal that the light-sensitive device 21 of corresponding more high gray scope exports more is not easy to make the storage capacitance Cst of connection to reach saturation.
It can so ensure in the case of the shorter time is accumulated in illumination, the high light-sensitive device 21 of photosensitive degree reads low GTG
Dim light, the light-sensitive device of corresponding high gray scope can also be not in saturation in the case of the illumination accumulation longer time
Problem.
So, can be according to each photosensor in photosensitive detection unit 2 when carrying out the brightness detection of sub-pixel unit 1
The electric signal of photosensitive degree and each light-sensitive device 21 output of part 21, determine the actual light emission luminance value of sub-pixel unit 1, tool
Body, can according to the electric signal that light-sensitive device 21 exports whether saturation, determine the luminosity of sub-pixel unit in which ash
Order range, to determine that suitable light-sensitive device calculates the actual light emission luminance value of sub-pixel unit 1；Basis is determined afterwards
The actual light emission luminance value of sub-pixel unit 1 and demarcation brightness value set in advance, the driving voltage of sub-pixel unit 1 is carried out
Adjustment.It is thus possible to be made a distinction for different GTGs using the light-sensitive device of not photosensitive degree to brightness, ensure photosensor
The accuracy that part 21 adjusts to display picture.
Specifically, in above-mentioned organic EL display panel provided in an embodiment of the present invention, a variety of sides can be passed through
Formula adjusts the photosensitive degree of light-sensitive device 21, specific separately below to introduce.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in Figure 5 and Figure 6,
In same photosensitive detection unit 2, the light receiving area of each light-sensitive device 21 can be achieved in different photosensors with different
The photosensitive degree of part 21 is distinguished.Each light-sensitive device 21 is specifically using the cartographic represenation of area light-receiving for being not filled by region in fig. 5 and fig.
Area.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in figure 5, same
In one photosensitive detection unit 2, the area of the photosurface of each light-sensitive device 21 is different, and the photosurface of each light-sensitive device 21
Entire area is light receiving area.
Specifically, the photosurface of light-sensitive device 21 is unobstructed in Figure 5, and whole photosurfaces act on for light-receiving.In Fig. 5
Photosurface is represented with all surfaces (including filling and unfilled region) of each light-sensitive device 21 in Fig. 6.Now, regulation is passed through
The photosurface size of each light-sensitive device 21, you can realize the regulation of not photosensitive degree.In Figure 5, from top to bottom, in same light
The photosensitive degree of each light-sensitive device 21 in quick detection unit 2 gradually increases, respectively corresponding to grey-scale range gradually reduce.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in fig. 6, same
In one photosensitive detection unit 2, the area of the photosurface of each light-sensitive device 21 can be with identical；
In same photosensitive detection unit 2, barrier bed 22 is provided with the photosurface of at least one light-sensitive device 21；And deposit
When being provided with barrier bed 22 on the photosurface of at least two light-sensitive devices 21, each barrier bed 22 has the open region of different area
Domain, the area of open area is as light receiving area.
Specifically, the surface area of each light-sensitive device 21 is all consistent in figure 6, each to adjust by blocking for barrier bed 22
The light receiving area size of light-sensitive device 21, you can realize the regulation of not photosensitive degree.In figure 6 from top to bottom, same
The photosensitive degree of each light-sensitive device 21 in photosensitive detection unit 2 tapers into, and corresponding grey-scale range gradually increases respectively.
The situation that barrier bed 22 is set on the photosurface of part light-sensitive device 21 is illustrate only in Fig. 6, in practical application, can be whole
Barrier bed 22 is respectively provided with the photosurface of light-sensitive device 21, is not limited herein.Also, the light in different photosensitive detection units 2
The coverage extent and shielding mode of sensing device 21 could be arranged to identical, it can also be provided that identical, not limit herein.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, barrier bed 22 can be
Metal level or black matrix, are not limited herein.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in figure 8, blocking
22 photosurface typically with light-sensitive device 21 of layer contacts with each other, i.e., barrier bed 22 is directly arranged at the surface of light-sensitive device 21.
During practical application, according to production process needs, barrier bed 22 can also be set being spaced with light-sensitive device 21 at setpoint distance,
This is not limited.Also, barrier bed 22 can be real by way of individually increasing film layer in organic EL display panel
It is existing, existing film layer structure can also be utilized to realize, do not limited herein.Such as in Fig. 8 it is that one layer of barrier bed 22 is fabricated separately
Function is blocked in realization.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in Figure 5 and Figure 6,
Photosensitive detection unit 2 can be located between the sub-pixel unit 1 of adjacent column.So, when sub-pixel unit 1 is lighted line by line, with
Photosensitive detection unit 2 corresponding to sub-pixel unit 1 is typically located at same a line with the sub-pixel unit 1, and both are closer to the distance, can be with
Preferably obtain signal.Also, the photosensitive degree of each light-sensitive device 21 is controlled for convenience, in same photosensitive detection unit 2
Each light-sensitive device 21 is general identical with the distance between adjacent sub-pixel unit 1.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in fig. 7, same
In one photosensitive detection unit 2, the distance between each light-sensitive device 21 and adjacent sub-pixel unit 1 can be with different, thus
Realize that the photosensitive degree of different light-sensitive devices 21 is distinguished.Also, the photosensitive degree of each light-sensitive device 21 is controlled for convenience, same
The light receiving area of each light-sensitive device 21 is typically identical in one photosensitive detection unit 2.In the figure 7, in same photosensitive detection unit 2
In each light-sensitive device 21 it is nearer apart from sub-pixel unit 1, its photosensitive degree is bigger, and corresponding grey-scale range is lower.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in fig. 7, photosensitive
Detection unit 2 can be located between the sub-pixel unit 1 of adjacent lines, a photosensitive detection unit 2 can so include more
Individual light-sensitive device 21 is located at the both sides of sub-pixel unit 1 respectively, so as to so that multiple photosensitive detection units 2 are multiplexed and sub-pix
Unit 1 is apart from different light-sensitive devices 21.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, in same photosensitive detection
In unit 2, can adjust simultaneously each light-sensitive device 21 light receiving area and its distance between with sub-pixel unit 1, make two
Person is different, does not limit herein.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in figure 5 and figure 7,
Photosensitive detection unit 2 can correspond with sub-pixel unit 1, i.e., be respectively provided with photosensitive inspection on the side of each sub-pixel unit 1
Survey unit 2；Or as shown in figure 4, photosensitive detection unit 2 can also with each sub-pixel unit 1 form pixel cell (such as
One pixel cell is formed by R, G, B and W) correspond.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, as shown in figs. 4 and 7,
Each photosensitive detection unit 2 can include two light-sensitive devices 21, correspond to high gray scope and low grey-scale range respectively.Certainly,
As shown in Figure 5 and Figure 6, each photosensitive detection unit 2 can also include three light-sensitive devices 21, correspond to respectively high gray scope,
Middle grey-scale range and low grey-scale range.The light-sensitive device more than 21 that each photosensitive detection unit 2 includes, to the standard of display picture adjustment
True property is higher, but occupancy pixel light emission region also will be more, therefore can determine the quantity of light-sensitive device 21 as needed.
Alternatively, in above-mentioned organic EL display panel provided in an embodiment of the present invention, wrapped in sub-pixel unit 1
The dot structure contained can have a variety of implementations, and luminescent device can be top emission type or bottom emitting type,
This is not limited.The dot structure that Sensor and OLED is combined can be that bottom emitting structure can also be emission structure at top.Each light
Transistor in quick detection unit 2 and dot structure can be bottom gate type or top gate type, not limit herein.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of display device, including the embodiment of the present invention carries
The above-mentioned organic EL display panel supplied, the display device can be：Mobile phone, tablet personal computer, television set, display, pen
Remember any product or device with display function such as this computer, DPF, navigator.The implementation of the display device can be joined
See the embodiment of above-mentioned organic EL display panel, repeat part and repeat no more.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of drive of above-mentioned organic EL display panel
Dynamic method, because the principle of driving method solution problem is similar to a kind of foregoing organic EL display panel, therefore should
The implementation of driving method may refer to the implementation of organic EL display panel, repeats part and repeats no more.
Specifically, the driving method of a kind of above-mentioned organic EL display panel provided in an embodiment of the present invention, such as Fig. 9
It is shown, comprise the following steps：
The electric signal of each light-sensitive device output in S901, acquisition photosensitive detection unit corresponding with sub-pixel unit；
S902, the photosensitive degree according to each light-sensitive device in photosensitive detection unit, and the telecommunications of each light-sensitive device output
Number, determine the actual light emission luminance value of sub-pixel unit；
S903, actual light emission luminance value and demarcation brightness value set in advance according to the sub-pixel unit determined, it is right
The driving voltage of sub-pixel unit is adjusted.
Specifically, the electric signal of photosensitive detection unit output can be current signal or voltage signal, herein not
Limit.
Alternatively, can be the free time in display picture in above-mentioned driving method provided in an embodiment of the present invention
When lighting sub-pixel unit line by line respectively, step S901 acquisitions and sub-pix list are performed while every row sub-pixel unit is lighted
The electric signal of each light-sensitive device output in photosensitive detection unit corresponding to member.It can also be during display picture, perform
Step S901, is not limited herein.
Alternatively, in above-mentioned driving method provided in an embodiment of the present invention, S902 is according to each light in photosensitive detection unit
The photosensitive degree of sensing device, and the electric signal of each light-sensitive device output, determine the actual light emission luminance value of sub-pixel unit, tool
Body includes：
First, whether the electric signal for determining each light-sensitive device output is unsaturation electric signal；
Afterwards, the electric signal maximum light-sensitive device of photosensitive degree in the light-sensitive device for exporting unsaturation electric signal exported
Actual light emission luminance value of the corresponding brightness value as sub-pixel unit.
Specifically, each photosensitive detection unit can include two light-sensitive devices S1 and S2 by taking the structure shown in Fig. 4 as an example,
S1 corresponds to low grey-scale range, and S2 corresponds to high gray scope.Light-sensitive device S1 and S2 reads electric signal simultaneously, when display picture is low
During GTG, light-sensitive device S1 and S2 are not up to saturation, then select the big light-sensitive device S1's of photosensitive degree of corresponding low GTG
Electric signal；When display picture is high gray, the light-sensitive device S1 that the photosensitive degree of corresponding low GTG is big can reach saturation, then select
Surely the small light-sensitive device S2 of photosensitive degree of high gray electric signal is corresponded to.
By taking the structure shown in Fig. 5 as an example, each photosensitive detection is single, and 2 can include three light-sensitive devices 21, uppermost light
The corresponding high gray scope of sensing device 21, the corresponding low grey-scale range of nethermost light-sensitive device 21, the middle correspondence of light-sensitive device 21
Middle grey-scale range.Three light-sensitive devices 21 read electric signal simultaneously, and when display picture is low GTG, three light-sensitive devices 21 are equal
Not up to saturation, then select the electric signal of the nethermost light-sensitive device 21 of the photosensitive degree maximum of corresponding low GTG；Work as display
When picture is middle GTG, the light-sensitive device 21 that the photosensitive degree of corresponding low GTG is maximum can reach saturation, then select ash in corresponding to
The electric signal of the moderate light-sensitive device 21 of the photosensitive degree of rank；When display picture is high gray, corresponding low GTG and middle GTG
Photosensitive more light-sensitive device 21 can reach saturation, then select the minimum photosensor of the photosensitive degree of corresponding high gray
The electric signal of part 21.
Alternatively, in above-mentioned driving method provided in an embodiment of the present invention, S903 is according to the sub-pixel unit determined
Actual light emission luminance value and demarcation brightness value set in advance, the driving voltage of sub-pixel unit is adjusted, specific bag
Include：
When it is determined that the actual light emission luminance value of sub-pixel unit is more than demarcation brightness value set in advance, sub-pix is turned down
The driving voltage of unit；
When it is determined that the actual light emission luminance value of sub-pixel unit is less than demarcation brightness value set in advance, sub-pix is heightened
The driving voltage of unit；
When it is determined that the actual light emission luminance value of sub-pixel unit is equal to demarcation brightness value set in advance, sub-pix is kept
The driving voltage of unit.
Above-mentioned organic EL display panel provided in an embodiment of the present invention and its driving method, display device, with
At least two light-sensitive devices are set in photosensitive detection unit corresponding to sub-pixel unit, and belong to same photosensitive detection unit extremely
The photosensitive degree of few two light-sensitive devices is different, and photosensitive degree does not refer to that luminous intensity can be received within the unit interval
Degree is different.Light-sensitive device with not photosensitive degree corresponds to different grey-scale ranges, the light of corresponding lower grey-scale range respectively
The photosensitive degree of sensing device is higher, therefore, under equal conditions, the electric signal of the light-sensitive device output of corresponding lower grey-scale range
More first reach saturation, the electric signal of the light-sensitive device output of corresponding more high gray scope is more not easy to reach saturation.So, carrying out
, can be according to the photosensitive degree of each light-sensitive device in photosensitive detection unit and each photosensitive during the brightness detection of sub-pixel unit
The electric signal of device output, determine the actual light emission luminance value of sub-pixel unit；Afterwards according to the sub-pixel unit determined
Actual light emission luminance value and demarcation brightness value set in advance, are adjusted to the driving voltage of sub-pixel unit.It is thus possible to
Brightness is made a distinction using the light-sensitive device of not photosensitive degree for different GTGs, ensures that light-sensitive device is adjusted to display picture
Whole accuracy.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (15)
- A kind of 1. organic EL display panel, it is characterised in that including：Multiple sub-pixel units, and with the sub- picture Multiple photosensitive detection units corresponding to plain unit；Each photosensitive detection unit includes at least two light-sensitive devices, and belongs at least the two of the same photosensitive detection unit The photosensitive degree of the individual light-sensitive device is different.
- 2. organic EL display panel as claimed in claim 1, it is characterised in that in the same photosensitive detection unit In, the light receiving area of each light-sensitive device is different.
- 3. organic EL display panel as claimed in claim 2, it is characterised in that in the same photosensitive detection unit In, the area of the photosurface of each light-sensitive device is different, and the entire area of the photosurface of each light-sensitive device is The light receiving area.
- 4. organic EL display panel as claimed in claim 2, it is characterised in that in the same photosensitive detection unit In, the area of the photosurface of each light-sensitive device is identical；In the same photosensitive detection unit, barrier bed is provided with the photosurface of at least one light-sensitive device；And deposit When being provided with barrier bed on the photosurface of at least two light-sensitive devices, each barrier bed has the opening of different area Region, the area of the open area is the light receiving area.
- 5. organic EL display panel as claimed in claim 4, it is characterised in that the barrier bed is metal level or black Matrix.
- 6. organic EL display panel as claimed in claim 4, it is characterised in that the barrier bed and the photosensor The photosurface of part contacts with each other.
- 7. the organic EL display panel as described in claim any one of 1-6, it is characterised in that the photosensitive detection is single Member is between the sub-pixel unit of adjacent column.
- 8. organic EL display panel as claimed in claim 1, it is characterised in that in the same photosensitive detection unit In, each light-sensitive device and the distance between the adjacent sub-pixel unit are different.
- 9. organic EL display panel as claimed in claim 8, it is characterised in that the photosensitive detection unit is located at phase Between the sub-pixel unit of adjacent rows.
- 10. organic EL display panel as claimed in claim 1, it is characterised in that the photosensitive detection unit and institute State sub-pixel unit one-to-one corresponding.
- 11. organic EL display panel as claimed in claim 1, it is characterised in that each photosensitive detection unit is equal Including two light-sensitive devices.
- 12. a kind of display device, it is characterised in that including the ORGANIC ELECTROLUMINESCENCE DISPLAYS as described in claim any one of 1-11 Panel.
- 13. a kind of driving method of organic EL display panel as described in claim any one of 1-11, its feature exist In, including：Obtain the electric signal of each light-sensitive device output in photosensitive detection unit corresponding with the sub-pixel unit；According to the photosensitive degree of each light-sensitive device in the photosensitive detection unit, and the electricity of each light-sensitive device output Signal, determine the actual light emission luminance value of the sub-pixel unit；According to the actual light emission luminance value for the sub-pixel unit determined and demarcation brightness value set in advance, to the Asia The driving voltage of pixel cell is adjusted.
- 14. driving method as claimed in claim 13, it is characterised in that described according to each in the photosensitive detection unit The photosensitive degree of light-sensitive device, and the electric signal of each light-sensitive device output, determine the actual hair of the sub-pixel unit Brightness values, specifically include：Whether the electric signal for determining each light-sensitive device output is unsaturation electric signal；It is bright corresponding to the electric signal that the maximum light-sensitive device of photosensitive degree in the light-sensitive device for exporting unsaturation electric signal is exported Actual light emission luminance value of the angle value as the sub-pixel unit.
- 15. driving method as claimed in claim 13, it is characterised in that the sub-pixel unit that the basis is determined Actual light emission luminance value and demarcation brightness value set in advance, are adjusted, specifically to the driving voltage of the sub-pixel unit Including：When it is determined that the actual light emission luminance value of the sub-pixel unit is more than demarcation brightness value set in advance, the Asia is turned down The driving voltage of pixel cell；When it is determined that the actual light emission luminance value of the sub-pixel unit is less than demarcation brightness value set in advance, the Asia is heightened The driving voltage of pixel cell；When it is determined that the actual light emission luminance value of the sub-pixel unit is equal to demarcation brightness value set in advance, the Asia is kept The driving voltage of pixel cell.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069984.9A CN107731880B (en) | 2017-11-03 | 2017-11-03 | Organic electroluminescent display panel, driving method thereof and display device |
| US16/344,923 US11380749B2 (en) | 2017-11-03 | 2018-11-02 | Display panel, driving method thereof, and display apparatus |
| PCT/CN2018/113656 WO2019085989A1 (en) | 2017-11-03 | 2018-11-02 | Display panel, driving method thereof, and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069984.9A CN107731880B (en) | 2017-11-03 | 2017-11-03 | Organic electroluminescent display panel, driving method thereof and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107731880A true CN107731880A (en) | 2018-02-23 |
| CN107731880B CN107731880B (en) | 2020-02-18 |
Family
ID=61222479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711069984.9A Active CN107731880B (en) | 2017-11-03 | 2017-11-03 | Organic electroluminescent display panel, driving method thereof and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107731880B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428721A (en) * | 2018-03-19 | 2018-08-21 | 京东方科技集团股份有限公司 | A kind of display device and control method |
| WO2019085989A1 (en) * | 2017-11-03 | 2019-05-09 | Boe Technology Group Co., Ltd. | Display panel, driving method thereof, and display apparatus |
| CN109920394A (en) * | 2019-04-29 | 2019-06-21 | 合肥惠科金扬科技有限公司 | A kind of adjusting method of screen intensity, regulating device and display equipment |
| CN110047906A (en) * | 2019-05-21 | 2019-07-23 | 京东方科技集团股份有限公司 | Display device, display panel and its manufacturing method based on clear photodiode |
| CN110071164A (en) * | 2019-05-07 | 2019-07-30 | 京东方科技集团股份有限公司 | A kind of display base plate and its brightness adjusting method, display device |
| CN110137184A (en) * | 2019-05-27 | 2019-08-16 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel and display device |
| CN110164384A (en) * | 2018-09-29 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of luminance compensation method and device |
| WO2019218831A1 (en) * | 2018-05-14 | 2019-11-21 | 京东方科技集团股份有限公司 | Array substrate, and display device and brightness calibration method therefor |
| CN112639946A (en) * | 2018-12-24 | 2021-04-09 | 深圳市柔宇科技股份有限公司 | Display panel, preparation method thereof and display device |
| CN114385003A (en) * | 2021-12-10 | 2022-04-22 | 厦门天马微电子有限公司 | Display panel, display device, control method of display device, and electronic apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221307A (en) * | 2007-01-09 | 2008-07-16 | 株式会社日立显示器 | Image display apparatus with ambient light sensing system |
| CN101900899A (en) * | 2009-05-25 | 2010-12-01 | 瀚宇彩晶股份有限公司 | Optical touch panel structure |
| US20100315377A1 (en) * | 2009-06-16 | 2010-12-16 | Au Optronics Corp. | Touch panel |
| US20110102365A1 (en) * | 2009-11-03 | 2011-05-05 | Samsung Mobile Display Co., Ltd | Flat panel display with built-in touch screen and a method of driving the same |
-
2017
- 2017-11-03 CN CN201711069984.9A patent/CN107731880B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221307A (en) * | 2007-01-09 | 2008-07-16 | 株式会社日立显示器 | Image display apparatus with ambient light sensing system |
| CN101900899A (en) * | 2009-05-25 | 2010-12-01 | 瀚宇彩晶股份有限公司 | Optical touch panel structure |
| US20100315377A1 (en) * | 2009-06-16 | 2010-12-16 | Au Optronics Corp. | Touch panel |
| US20110102365A1 (en) * | 2009-11-03 | 2011-05-05 | Samsung Mobile Display Co., Ltd | Flat panel display with built-in touch screen and a method of driving the same |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085989A1 (en) * | 2017-11-03 | 2019-05-09 | Boe Technology Group Co., Ltd. | Display panel, driving method thereof, and display apparatus |
| US11380749B2 (en) | 2017-11-03 | 2022-07-05 | Boe Technology Group Co., Ltd. | Display panel, driving method thereof, and display apparatus |
| US11263948B2 (en) | 2018-03-19 | 2022-03-01 | Boe Technology Group Co., Ltd. | Display apparatus and control method |
| CN108428721B (en) * | 2018-03-19 | 2021-08-31 | 京东方科技集团股份有限公司 | Display device and control method |
| CN108428721A (en) * | 2018-03-19 | 2018-08-21 | 京东方科技集团股份有限公司 | A kind of display device and control method |
| WO2019179393A1 (en) * | 2018-03-19 | 2019-09-26 | 京东方科技集团股份有限公司 | Display device and control method |
| WO2019218831A1 (en) * | 2018-05-14 | 2019-11-21 | 京东方科技集团股份有限公司 | Array substrate, and display device and brightness calibration method therefor |
| US10916599B2 (en) | 2018-05-14 | 2021-02-09 | Boe Technology Group Co., Ltd. | Array substrate, display apparatus and luminance calibration method therefor |
| WO2020062925A1 (en) * | 2018-09-29 | 2020-04-02 | 京东方科技集团股份有限公司 | Electroluminescent display panel and brightness compensation method therefor |
| CN110164384A (en) * | 2018-09-29 | 2019-08-23 | 京东方科技集团股份有限公司 | A kind of luminance compensation method and device |
| US11456340B2 (en) | 2018-09-29 | 2022-09-27 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Electroluminescent display panel and brightness compensation method therefor |
| CN112639946A (en) * | 2018-12-24 | 2021-04-09 | 深圳市柔宇科技股份有限公司 | Display panel, preparation method thereof and display device |
| CN109920394A (en) * | 2019-04-29 | 2019-06-21 | 合肥惠科金扬科技有限公司 | A kind of adjusting method of screen intensity, regulating device and display equipment |
| CN110071164A (en) * | 2019-05-07 | 2019-07-30 | 京东方科技集团股份有限公司 | A kind of display base plate and its brightness adjusting method, display device |
| CN110047906A (en) * | 2019-05-21 | 2019-07-23 | 京东方科技集团股份有限公司 | Display device, display panel and its manufacturing method based on clear photodiode |
| CN110137184A (en) * | 2019-05-27 | 2019-08-16 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel and display device |
| US11327380B2 (en) | 2019-05-27 | 2022-05-10 | Boe Technology Group Co., Ltd. | Array substrate, display panel and display device |
| CN110137184B (en) * | 2019-05-27 | 2021-09-21 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device |
| CN114385003A (en) * | 2021-12-10 | 2022-04-22 | 厦门天马微电子有限公司 | Display panel, display device, control method of display device, and electronic apparatus |
| CN114385003B (en) * | 2021-12-10 | 2024-06-04 | 厦门天马微电子有限公司 | Display panel, display device, control method of display device and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107731880B (en) | 2020-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107731880A (en) | A kind of organic EL display panel and its driving method, display device | |
| CN104751788B (en) | Oled | |
| EP3168835B1 (en) | Organic light emitting diode display and gamma compensation method for driving the same | |
| US11114025B2 (en) | Method for sensing light | |
| CN107785406B (en) | Organic electroluminescent display panel, driving method thereof and display device | |
| CN103903559B (en) | The method of organic light-emitting display device and driving organic light-emitting display device | |
| CN101689347B (en) | Display device, display device drive method, and computer program | |
| US7061452B2 (en) | Spontaneous light-emitting display device | |
| KR101479984B1 (en) | Apparatus for sensing illumination and display device having the same | |
| CN107204172A (en) | Image element circuit and its driving method, display panel | |
| CN106560883A (en) | Organic Light-emitting Display And Method For Driving The Same | |
| US20050285822A1 (en) | High-performance emissive display device for computers, information appliances, and entertainment systems | |
| CN101256097B (en) | Ambient light sensing circuit and flat panel display including ambient light sensing circuit | |
| CN107452327A (en) | Display device and module and method for being compensated to the pixel of display device | |
| CN104751785A (en) | Data processing method and apparatus for organic light emitting diode display device | |
| CN104637440A (en) | Organic light emitting display and method of compensating for mobility thereof | |
| CN105321456A (en) | Organic light emitting display for sensing degradation of organic light emitting diode | |
| KR20160083590A (en) | Organic light emitting display device and method for driving thereof | |
| CN105448241A (en) | Organic light-emitting diode display device | |
| WO2006005033A2 (en) | System and method for a high-performance display device having individual pixel luminance sensing and control | |
| KR20170060218A (en) | Organic light emitting display | |
| KR20080085255A (en) | Liquid crystal display device and method driving of the same | |
| CN101996554A (en) | Display device and electronic apparatus | |
| CN110364114A (en) | Display panel, brightness compensation method thereof and display device | |
| CN110071164A (en) | A kind of display base plate and its brightness adjusting method, display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |