CN109637449B - OLED lighting panel - Google Patents

OLED lighting panel Download PDF

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Publication number
CN109637449B
CN109637449B CN201811363463.9A CN201811363463A CN109637449B CN 109637449 B CN109637449 B CN 109637449B CN 201811363463 A CN201811363463 A CN 201811363463A CN 109637449 B CN109637449 B CN 109637449B
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light emitting
scheduling
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CN109637449A (en
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鲁天星
郑彬
郭晓磊
吴海燕
张国辉
王静
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Guan Yeolight Technology Co Ltd
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Guan Yeolight Technology Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—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]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The utility model provides a specific structure of OLED lighting panel, this technical scheme is on prior art's basis, and the wiring is sent out the light zone and is equipped with the dispatch lead wire in the inefficiently sending out, introduces the signal of telecommunication in the bonding district to the effective light zone of sending out. Preferably, the PWM wave generated by the single chip in the printed circuit board is input into the driving chip, and different PWM waveforms can be output through the scheduling lead. Finally, the modulation waveform is introduced into the effective light emitting area of the OLED screen body, so that the on-off control of the effective light emitting area of the OLED screen body is realized, and in addition, the adjustment of the brightness uniformity of the screen body is realized by adjusting the duty ratio and the amplitude of the modulation waveform.

Description

OLED lighting panel
Technical Field
The present disclosure relates generally to the field of organic electroluminescent devices, and more particularly to an OLED lighting panel.
Background
An OLED device is generally of a sandwich structure, and a glass substrate or a flexible substrate is covered with an anode having good light transmittance, such as Indium Tin Oxide (ITO), and functional layers such as a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer are sequentially deposited on the ITO anode, and then a cathode metal material is deposited, and finally, packaging is performed.
Traditional OLED lighting module is mostly the OLED screen body plus FPC's structural style, thereby realizes lightening and the purpose that the luminance regulatory function reaches the illumination through external control board promptly. However, in the prior art, when the light emitting area of the OLED screen is large, the light emitting shape is irregular, or the aspect ratio of the light emitting area is high, the brightness distribution is not uniform, and improvement is needed.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide an OLED lighting panel capable of effectively improving the overall brightness uniformity of an OLED screen compared to the prior art.
An OLED lighting panel comprising: a substrate, the substrate comprising: a bonding area, an effective light-emitting area and a non-effective light-emitting area; the active light emitting area includes: a first electrode formed on the substrate, a light emitting layer formed on the first electrode, and a second electrode formed on the light emitting layer; the non-effective luminous area is positioned around the effective luminous area; at least two independent scheduling leads are arranged in the non-effective luminous zone, and the scheduling leads and the screen body leads are prepared in the same layer; the dispatching lead is internally loaded with a modulation waveform; one end of the scheduling lead is electrically connected to the bonding area, and the other end of the scheduling lead is conducted with the effective light emitting area.
According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps: the printed circuit board is connected with the bonding area, and is provided with a single chip microcomputer and a driving chip connected with the output of the single chip microcomputer; the output of the driving chip is electrically connected to the bonding area.
According to the technical scheme provided by the embodiment of the application, the modulation waveform output by the single chip microcomputer is a PWM wave.
According to the technical scheme provided by the embodiment of the application, the aspect ratio of the effective light emitting area is greater than or equal to 5.
According to the technical scheme provided by the embodiment of the application, the scheduling lead comprises: a first lead and a second lead; one end of the first lead, which is relatively far away from the bonding area, is conducted with the position, on the effective light emitting area, of the maximum linear distance from the bonding area; one end of the second lead, which is relatively far away from the bonding area, is conducted with the position, on the effective light emitting area, of the minimum linear distance from the bonding area.
According to the technical scheme provided by the embodiment of the application, the ratio range of c1/c2 is as follows: c1/c2 is more than or equal to 0.5 and less than or equal to 1.5; the ratio of a1/a2 ranges from: a1/a2 is more than or equal to 0.5 and less than or equal to 1.3. (wherein: c1, a1, T1 are amplitude, pulse width time and period of the first lead; c2, a2, T2 are amplitude, pulse width time and period of the second lead; T1-T2.)
According to the technical scheme provided by the embodiment of the application, N (N > 2) independent scheduling leads are arranged in the non-effective light emitting area; and one end of the scheduling lead, which is relatively far away from the bonding area, is respectively connected with different positions in the effective luminous area.
According to the technical solution provided by the embodiment of the present application, the effective light emitting area includes: a plurality of independently arranged light-emitting subareas distributed in a single row; and one end of the scheduling lead, which is relatively far away from the bonding area, is sequentially communicated with the light-emitting partition.
According to the technical scheme provided by the embodiment of the application, the N scheduling leads are divided into according to the linear distance between one end, far away from the bonding area, of the N scheduling leads and the bonding area: n th1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthNA lead wire; n th1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthNThe lead wire is kept away from bonding region one end and is in proper order with bonding region linear distance: d1，d2，d3，……，dNAnd d is1＞d2＞d3＞……＞dN(ii) a The Nth1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthNThe amplitude and/or duty cycle of the modulated waveform in the lead is sequentially decreased.
According to the technical scheme provided by the embodiment of the application, the switching time of the PWM waveform between two adjacent scheduling leads is less than or equal to 0.1 ms.
In summary, the present application provides a specific structure of an OLED lighting panel. On the basis of the prior art, the scheduling lead is arranged in the non-effective light emitting area, and the electric signal in the bonding area is led into the effective light emitting area. Preferably, the PWM wave generated by the single chip in the printed circuit board is input into the driving chip, and different PWM waveforms can be output through the scheduling lead. Finally, the modulation waveform is introduced to the effective light emitting area of the OLED screen body, so that the on-off control of the effective light emitting area of the OLED screen body is realized. In addition, the brightness uniformity of the screen body is adjusted by adjusting the duty ratio and the amplitude of the modulation waveform.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of an OLED lighting panel according to the present application;
FIG. 2 is a schematic structural diagram (light-emitting section) of an OLED lighting panel according to the present application;
FIG. 3 is a schematic structural diagram (brightness test point) of an OLED lighting panel according to the present application;
FIG. 4 is a waveform diagram of a PWM wave in the first lead of FIG. 3;
fig. 5 is a waveform diagram of the PWM wave in the second lead of fig. 3.
In the figure: 1. a substrate; 2. a bonding area; 3. an active light emitting region; 4. a printed circuit board; 5. a brightness test point; 6. scheduling a lead; 61. a first lead; 62. a second lead; 7. and (4) light-emitting subareas.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The first embodiment is as follows:
referring to fig. 1 and fig. 2, an OLED lighting panel is specifically disclosed in the present embodiment.
An OLED lighting panel comprising: a substrate 1, the substrate 1 comprising: a bonding region 2, an effective light emitting region 3 and a non-effective light emitting region; the effective light emitting region 3 includes: a first electrode formed on the substrate 1, a light-emitting layer formed on the first electrode, and a second electrode formed on the light-emitting layer; the non-effective light emitting region is positioned around the effective light emitting region 3.
Wherein:
the substrate 1, the base member of the present embodiment, on which other functional layers are prepared, includes: a first electrode formed on the substrate 1, a light-emitting layer formed on the first electrode, and a second electrode formed on the light-emitting layer.
The first electrode, the light emitting layer and the second electrode form an effective light emitting area on the OLED lighting panel.
The non-effective light emitting region is positioned around the effective light emitting region 3.
In addition, the OLED lighting panel is further provided with a bonding area 2, which serves as a basic component of the technical solution and is used for connecting with an external printed circuit board.
At least two independent scheduling leads 6 are arranged in the non-effective luminous zone, and the scheduling leads 6 and the screen body leads are prepared in the same layer; the dispatching lead is internally loaded with a modulation waveform; one end of the dispatch lead 6 is electrically connected to bonding area 2 and the other end thereof is in conduction with the active light emitting area 3.
In this design, the scheduling lead is configured to introduce an externally input modulation waveform into the effective light emitting area, that is: the modulation waveform is introduced into the effective light emitting area of the OLED screen body, so that the on-off control of the effective light emitting area of the OLED screen body is realized, and in addition, the adjustment of the brightness uniformity of the screen body is realized by adjusting the duty ratio and the amplitude of the modulation waveform.
Specifically, taking two dispatching leads as an example, one end of each dispatching lead relatively far away from the bonding area (also called as a far end of each dispatching lead) is connected with different positions of an effective light emitting area of the OLED screen body. The modulation waveform is then input by the two scheduling leads.
In the prior art, the design of the scheduling lead wire is not increased, the brightness of the effective light emitting area close to the bonding area is greater than the brightness of the effective light emitting area far away from the bonding area, when the length-width ratio of the effective light emitting area is large, the brightness uniformity of the OLED lighting panel per se is poor, and the scheduling lead wire designed in the technical scheme needs to be utilized for adjustment. As is preferred, the aspect ratio of the active light emitting region is greater than or equal to 5.
In the two scheduling leads, the amplitude of the modulation waveform in one of the scheduling leads, which is relatively far away from the bonding area, is greater than the amplitude of the modulation waveform in the other scheduling lead, or the duty ratio of the modulation waveform in one of the scheduling leads, which is relatively far away from the bonding area, is greater than the duty ratio of the modulation waveform in the other scheduling lead, that is: by controlling the parameters of the modulation waveform, the brightness of the position, far away from the bonding area, on the effective light emitting area is improved, the brightness of the position, far away from the bonding area, on the effective light emitting area is controlled, and the uniformity of the brightness in the whole effective light emitting area can be ensured.
Based on the design, the modulation waveforms in different scheduling leads can be adjusted by adjusting the amplitude and/or the duty ratio, so that the brightness of the effective light emitting area electrically connected with the modulation waveforms can be adjusted, and the uniformity of the brightness in the whole effective light emitting area can be adjusted.
To input a modulation waveform to the scheduling lead, in any preferred embodiment, the method further includes: the printed circuit board 4 is connected with the bonding area 2, and a single chip microcomputer and a driving chip connected with the output of the single chip microcomputer are arranged on the printed circuit board 4; the output of the driver chip is electrically connected to the bonding area 2. Based on the design, the single chip microcomputer can be used for outputting modulation waveforms without an external instrument, and the modulation waveforms enter the scheduling lead wire through the driving chip and the bonding area. Preferably, the modulation waveform output by the single chip microcomputer is a PWM wave.
Referring to fig. 1, two scheduling pins are taken as an example: in any preferred embodiment, the dispatch lead 6 includes: a first lead 61 and a second lead 62; one end of first lead 61, which is relatively far away from bonding region 2, is in conduction with a position on active light emitting region 3 where the linear distance from bonding region 2 is maximum; the end of second lead 62 opposite to bonding area 2 is in contact with the portion of active light emitting area 3 that is at the minimum linear distance from bonding area 2.
Referring to FIGS. 4 and 5, in any preferred embodiment, the ratio of c1/c2 ranges from: c1/c2 is more than or equal to 0.5 and less than or equal to 1.5; the ratio of a1/a2 ranges from: a1/a2 is more than or equal to 0.5 and less than or equal to 1.3. (wherein: c1, a1, T1 are amplitude, pulse width time and period of the first lead; c2, a2, T2 are amplitude, pulse width time and period of the second lead; T1-T2.)
Taking a PWM wave as an example, the brightness uniformity of the OLED screen is adjusted by adjusting the PWM duty ratio and the amplitude, for example, for a region with low brightness, that is: the light emitting area is generally far away from the electrode area, and in order to improve the brightness of the screen body, the duty ratio can be improved by increasing the amplitude. Taking a strip-shaped OLED light-emitting screen with a screen length L of 150mm and a width W of 5mm as an example, please refer to fig. 3, fig. 4 and fig. 5:
in fig. 3, based on the structure in fig. 1, a brightness test point is additionally arranged in fig. 1, so as to detect the effect of adjusting the brightness uniformity of the screen body by duty ratios and amplitudes of different modulation waveforms; note that c1 and c 2; the parameter names of a1 and a2 refer to fig. 4 and 5. The duty cycle is the pulse width time/period, so for ease of calculation, the waveform periods in the first lead and in the second lead are set to be the same, i.e.: t1 ═ T2.
Figure BDA0001867303590000051
Figure BDA0001867303590000061
With reference to fig. 3, the brightness uniformity test method employs the following method: and selecting 5 test points with equal intervals in the screen body, and respectively obtaining the brightness test values of the test points. Wherein: and if the maximum value of the brightness test values is recorded as MAX and the minimum value is recorded as MIN, the calculation formula of the brightness uniformity U is as follows: u ═ 100% (1- (MAX-MIN)/(MAX + MIN))).
In scheme 1, the following are set: a1/a2 is constant, and the brightness uniformity is obviously improved by increasing the amplitude of the PWM waveform and increasing the ratio of c1/c 2.
In scheme 2, it is assumed that: c1/c2 is constant, and brightness uniformity is obviously improved by adjusting the duty ratio and increasing the ratio of a1/a 2.
In case 3, by increasing the ratio of c1/c2 and the ratio of a1/a2 at the same time, the luminance uniformity was significantly improved. Compared with the luminance uniformity of 60% in the prior art which adopts a constant current driving mode, the technical scheme provided by the embodiment can effectively solve the problem that the luminance is obviously uneven when the light-emitting area of the OLED screen body is large, the light-emitting shape is irregular, or the length-width ratio of the light-emitting area is high.
In any preferred embodiment, N (N > 2) independent scheduling leads 6 are arranged in the non-active light emitting area; the ends of the dispatch leads 6 relatively far from the bonding area 2 are connected to different portions of the active light emitting area 3.
When the dispatching lead wire has a plurality of, in order to guarantee the holistic even degree of OLED lighting panel, dispatching lead wire 6 sets up as above. And: "connected differently" means that the individual dispatch pins do not cross or overlap each other. Such as: and one end of the scheduling lead, which is far away from the bonding area, and one end, which is relatively close to the bonding area, of the effective luminous area are sequentially connected to one end, which is relatively far away from the bonding area, of the effective luminous area.
For another example, referring to fig. 2, the effective light emitting area 3 includes: a plurality of independently arranged light-emitting subareas 7 distributed in a single row; and one end of the scheduling lead 6 relatively far away from the bonding area 2 is sequentially communicated with the light-emitting subarea 7.
In order to control the N independent scheduling leads, the N scheduling leads 6 are divided into according to the linear distance between one end of the N scheduling leads 6 far away from the bonding area 2 and the bonding area 2: n th1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthNA lead wire; n th1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthN2 one end of bonding district and 2 linear distance in bonding district are kept away from to the lead wire and are in proper order: d1，d2，d3，……，dNAnd d is1＞d2＞d3＞……＞dN(ii) a The Nth1Lead wire, Nth2Lead wire, Nth3A lead wire,… …, NthNThe amplitude and/or duty cycle of the modulated waveform in the lead is sequentially decreased.
The specific design in this embodiment can be applied to a profiled shield.
In any preferred embodiment, the switching time of the PWM waveform between two adjacent scheduling leads is less than or equal to 0.1 ms.
Preferably, taking fig. 2 as an example, the effective light emitting area is divided into 6 light emitting partitions, from the area close to the bonding area to the area far from the bonding area: light emitting regions 1-6.
The light emitting regions 1-6 can realize different light emission, and different light emitting colors such as white light, green light, yellow light, red light, orange light and blue light can be realized by evaporating different light emitting materials through MASK plates (MASK) in different light emitting regions. Different colors can be achieved when different light emitting partitions are controlled to be lit by the scheduling pins to which they are connected. In particular, the white light can be realized by mixing light, such as yellow light + blue light, green light + red light + blue light, and the like.
Meanwhile, different dynamic effects which can be realized by the implementation can realize flowing water type, intermittent lighting and breathing type lighting, and the implementation method can be limited by the switching time of the chip aiming at different light emitting areas, such as: the flowing water effect is realized, and the switching time of the modulation waveform in the modulation lead wires of the adjacent light emitting areas is only required to be set at 50 ms; the intermittent lighting is realized, and only the switching time of the modulation waveform in the modulation lead of the adjacent light emitting areas needs to be set to be more than or equal to 1 ms; the respiratory lighting can also be realized by DIM dimming and intermittent lighting functions.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (9)

1. An OLED illumination panel, comprising: the method comprises the following steps: a substrate (1), the substrate (1) comprising: a bonding region (2), an effective light emitting region (3) and a non-effective light emitting region; the active light emitting area (3) comprising: a first electrode formed on a substrate (1), a light-emitting layer formed on the first electrode, and a second electrode formed on the light-emitting layer; the non-effective light emitting area is positioned at the periphery of the effective light emitting area (3);
at least two independent scheduling leads (6) are arranged in the non-effective luminous zone, and the scheduling leads (6) and the screen body leads are prepared in the same layer; the dispatching lead (6) is loaded with a modulation waveform; one end of the dispatching lead (6) is electrically connected to the bonding area (2) and the other end of the dispatching lead is conducted with the effective light emitting area (3);
the scheduling lead (6) comprises: a first lead (61) and a second lead (62); one end of the first lead (61), which is relatively far away from the bonding area (2), is conducted with a position, on the effective light emitting area (3), which is farthest from the bonding area (2); one end of the second lead (62) relatively far away from the bonding area (2) is conducted with the position, on the effective light emitting area (3), of the minimum linear distance with the bonding area (2).
2. An OLED lighting panel as claimed in claim 1 wherein: further comprising: the printed circuit board (4) is connected with the bonding area (2), and a single chip microcomputer and a driving chip connected with the output of the single chip microcomputer are arranged on the printed circuit board (4); the output of the driving chip is electrically connected to the bonding area (2).
3. An OLED lighting panel as claimed in claim 2 wherein: the modulation waveform output by the singlechip is PWM wave.
4. An OLED lighting panel according to claim 1 or 2 wherein: the aspect ratio of the effective light emitting area is greater than or equal to 5.
5. An OLED lighting panel as claimed in claim 1 wherein: the ratio range of c1/c2 is: c1/c2 is more than or equal to 0.5 and less than or equal to 1.5; the ratio of a1/a2 ranges from: 0.5-a 1/a 2-1.3, wherein: c1, a1, T1 are the amplitude, pulse width time and period of the first lead; c2, a2 and T2 are the amplitude, pulse width time and period of the second lead; t1= T2.
6. An OLED lighting panel as claimed in claim 3 wherein: n (N > 2) independent scheduling leads (6) are arranged in the non-effective light-emitting area; one end of the scheduling lead (6) relatively far away from the bonding area (2) is respectively connected with different positions in the effective light emitting area (3).
7. An OLED lighting panel as recited in claim 6, wherein: the active light emitting area (3) comprises: a plurality of independently arranged luminous subareas (7) which are distributed in a single row; and one end of the scheduling lead (6) relatively far away from the bonding area (2) is sequentially communicated with the light-emitting subarea (7).
8. An OLED lighting panel as claimed in claim 6 or 7, wherein: one end of each scheduling lead (6) far away from the bonding area (2) is divided into N scheduling leads (6) according to the linear distance between the end of each scheduling lead (6) and the bonding area (2): n th1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthNA lead wire; n th1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthNThe lead wire is kept away from bonding region (2) one end and is in proper order with bonding region (2) linear distance: d1，d2，d3，……，dNAnd d is1＞d2＞d3＞……＞dN(ii) a The Nth1Lead wire, Nth2Lead wire, Nth3Lead wire … …, NthNThe amplitude and/or duty cycle of the modulated waveform in the lead is sequentially decreased.
9. An OLED lighting panel as claimed in claim 3 or 5 or 7 wherein: the switching time of the PWM waveform between two adjacent scheduling leads is less than or equal to 0.1 ms.
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CN114566125A (en) * 2022-02-24 2022-05-31 淮安市润宇光电科技有限公司 Method and device for improving OLED display brightness uniformity
CN114446218B (en) * 2022-03-21 2024-01-30 昆山国显光电有限公司 Display panel and display device

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