CN103927977A - Organic light emitting diode displayed array substrate and displayer - Google Patents
Organic light emitting diode displayed array substrate and displayer Download PDFInfo
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- CN103927977A CN103927977A CN201310752938.4A CN201310752938A CN103927977A CN 103927977 A CN103927977 A CN 103927977A CN 201310752938 A CN201310752938 A CN 201310752938A CN 103927977 A CN103927977 A CN 103927977A
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Abstract
An embodiment of the invention discloses an organic light emitting diode displayed array substrate and a displayer. The array substrate comprises a pixel array and a power line, wherein the pixel array comprises a plurality of pixel units arranged in an array mode, and the power line comprises a first power bus, a plurality of first power branch line groups, a second power bus and a plurality of second power branch line groups. The first power bus and the second power bus are respectively positioned on two opposite sides of the pixel array, each of the first power branch line group and each of the second power branch line group comprise one or more power branch lines electrically connected with the pixel units, and the first power branch line groups and the second power branch line groups are arranged alternatively and connected with the first power bus and the second power bus respectively and electrically. Under the conditions of the aperture opening ratio and process difficulty are not changed, brightness compensation can be achieved only by rearranging power signal lines, and the problem of display non-uniformity of the whole display panel is achieved.
Description
Technical field
The present invention relates to electronic display technology field, relate in particular to a kind of array base palte and display of organic light emitting display.
Background technology
The remarkable performance having than existing display due to OLED, OLED display screen has been widely used in the small-medium sizes such as mobile phone, digital camera, MP3, MP4, sound equipment, instrument and meter and has shown field, and is extended to the demonstration of the large scale such as laptop computer displays, colour television set and flexible demonstration field.
Fig. 1 shows a kind of existing Organic Light Emitting Diode (OLED, Organic light emitting diode) demonstration/lighting engineering, as shown in Figure 1, described Organic Light Emitting Diode comprises: negative electrode 101, electron transfer layer 102, organic luminous layer 103, hole transmission layer 104, anode 105 and substrate 106.Under external voltage drives, hole and electronics are injected into organic luminous layer via hole transmission layer and electron transfer layer from anode and negative electrode respectively, and hole and electronics are compound in organic layer, give off energy, energy is passed to the molecule of organic luminescent substance, make it from ground state transition to excited state.Excited state is very unstable, and excited molecule is got back to ground state from excited state, and radiation transistion and produce luminescence phenomenon is shown in Figure 1.
Pel array is the main parts of OLED display technique, and Fig. 2 shows the pel array adopting in existing OLED display technique.Multiple Organic Light Emitting Diodes are connected to form array of organic light emitting pixels, at the moon of light emitting diode, anode two ends form cross-pressure, thereby for light emitting diode provides driving voltage, taking 2T1C as example, current already present driver element as shown in Figure 2, scanner driver is to thin film transistor (TFT) M1 (TFT, Thin film transistor) grid voltage is provided, control data-signal input TFT M1, and be stored in capacitor C st, and Cst provides voltage for the grid of TFT M2, control power signal line VDD input Organic Light Emitting Diode, therefore the size of power supply signal directly affects the moon of light emitting diode, anode cross-pressure, thereby control the brightness of pixel.
Power signal line VDD shown in Fig. 2 controls the cross-pressure of organic light emitting diode cathode and anode, and the brightness of pixel is played a decisive role.In the time that pel array is more, power signal line is longer, power signal line VDD has certain pressure drop (IR Drop), and IR Drop can cause two problems: it is different that a) IR Drop can cause inputting the power supply signal of pixel, and whole pel array can show inhomogeneous.B) due to the power supply signal difference of input pixel, can cause the OLED material aging degree difference of different pixels, along with the prolongation of time, this phenomenon can be more and more obvious.Power signal line VDD in Fig. 2 takes upper and lower two ends pixel to be supplied with to the mode of VDD signal, and whole display panel presents bright, the middle dark situation of upper and lower side, and as shown in Figure 3, upper end 301 and the lower end 303 of display panel are bright, and the centre 302 of display panel is darker.In addition only also have and provide power supply signal from one end, display panel can be dimmed gradually like this.Even power signal line adopts as the reticulate texture of Fig. 4, lay power signal line VDD in the surrounding of pel array, from four direction power supply, also can form periphery bright, middle dark situation.At present, OLED display technique extensively penetrates into each corner of people's routine work life, become gradually a kind of electronic display technology of main flow, but, the OLED display panel that cannot evenly show can greatly affect people and use the experience of OLED display technique, and industry solves the demonstration problem of non-uniform of OLED display panel in the urgent need to a kind of technology.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of array base palte and display of organic light emitting display, shows problem of non-uniform to solve traditional organic electroluminescence display panel entirety.
The embodiment of the present invention is by the following technical solutions:
First aspect, the embodiment of the present invention provides a kind of array base palte of organic light emitting display, comprising:
Pel array, comprises multiple pixel cells that array way is arranged that are;
Power lead, comprise the first power bus and multiple the first power distribution cable group, second source bus and multiple second source branch line group, described the first power bus and described second source bus lay respectively at the relative both sides of described pel array, and described the first power distribution cable group and described second source branch line group comprise that respectively at least one power distribution cable and described power distribution cable are electrically connected with multiple described pixel cells;
Wherein, described the first power distribution cable group and described second source branch line group are alternately arranged, and described the first power distribution cable group is only electrically connected with described first power bus of described pel array one side, adjacent described second source branch line group is only electrically connected with the described second source bus of described pel array opposite side.
Further, described the first power distribution cable group equates with power distribution cable number in described second source branch line group.
Further, in described the first power distribution cable group and described second source branch line group, the number of power distribution cable is 1 or 2.
Further, in described the first power distribution cable group and described second source branch line group, power distribution cable number is unequal.
Further, in described the first power distribution cable group, the number of power distribution cable is 1, and in described second source branch line group, the number of power distribution cable is 2; Or the number of power distribution cable is 2 in described the first power distribution cable group, in described second source branch line group, the number of power distribution cable is 1.
Further, also comprise data driver, be positioned at a side of described pel array, for providing data-signal to described multiple pixels; Scanner driver, is positioned at least one side of described pel array, for providing sweep signal to described multiple pixels; And, be connected to the ground wire GND of peripheral circuit.
Further, in described pel array, each described pixel cell comprises the first film transistor, the second thin film transistor (TFT), a capacitor and a light emitting diode;
The sweep signal being provided by described scanner driver is provided the transistorized grid of described the first film, the data-signal being provided by described data driver is provided transistorized the first electrode of described the first film, and transistorized the second electrode of described the first film connects the first end of described capacitor and the grid of described the second thin film transistor (TFT);
The second end of described capacitor connects the first electrode of described the second thin film transistor (TFT);
The first electrode of described the second thin film transistor (TFT) connects a corresponding power distribution cable in described the first power distribution cable group or described second source branch line group, and the second electrode of described the second thin film transistor (TFT) connects the anode of described light emitting diode;
The plus earth of described light emitting diode.
Further, described the first film transistor is P type, and described the second thin film transistor (TFT) is N-type, and the first electrode is that source electrode, the second electrode are drain electrode.
Further, described the first power bus and described second source bus lay respectively at the relative both sides of described pel array minor face.
Further, described the first power bus and described second source bus lay respectively at the relative both sides on the long limit of described pel array.
Further, in adjacent described the first power distribution cable group and second source branch line group, be not more than 100 μ m at a distance of the distance between two power distribution cables farthest.
Second aspect, the embodiment of the present invention also provides a kind of display, comprises the array base palte of above-described organic light emitting display.
The useful technique effect of the technical scheme that the embodiment of the present invention proposes is:
Because the resolution of human eye does not reach pixel scale, can not differentiate the difference of neighbor brightness, the technical scheme of the present embodiment is not in the situation that changing aperture opening ratio and technology difficulty, by the power signal line VDD that again arranges, make power supply provide to realize luminance compensation from pel array two ends in the mode mutually replacing respectively, show uneven problem thereby solve display panel entirety.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during the embodiment of the present invention is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to the content of the embodiment of the present invention and these accompanying drawings other accompanying drawing.
Fig. 1 is organic light emission OLED demonstration/lighting engineering schematic diagram in prior art;
Fig. 2 is OLED pel array in prior art;
Fig. 3 is the show state of OLED display panel in prior art;
Fig. 4 is the OLED display panel from surrounding power supply in prior art;
Fig. 5 is the array base palte of the organic light emitting display described in the specific embodiment of the invention one;
Fig. 6 is the sketch of a kind of array of display substrate shown in the specific embodiment of the invention one;
Fig. 7 is the sketch of a kind of array of display substrate shown in the specific embodiment of the invention two;
Fig. 8 is the sketch of a kind of array of display substrate shown in the specific embodiment of the invention one;
Fig. 9 is the sketch of a kind of array of display substrate shown in the specific embodiment of the invention one.
Embodiment
For the technical scheme of technical matters that the present invention is solved, employing and the technique effect that reaches clearer, below in conjunction with accompanying drawing, the technical scheme of the embodiment of the present invention is described in further detail, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
Embodiment mono-
Fig. 5 is the array base palte of the organic light emitting display described in the present embodiment.As shown in Figure 5, the array of display substrate described in the present embodiment comprises:
Pel array, comprises multiple pixel cells (in figure only schematically illustrated 501a, 501b, 501c) that array way is arranged that are;
Power lead, comprise the first power bus 502 and multiple the first power distribution cable group, in the present embodiment, the first power distribution cable group only comprises a power distribution cable (schematically illustrated 502a only in figure, 502b), second source bus 503 and multiple second source branch line group, in the present embodiment, second source branch line group only comprises a power distribution cable (schematically illustrated 503a only in figure, 503b), described the first power bus 502 and described second source bus 503 lay respectively at the relative both sides of described pel array, in the present embodiment, be upper and lower both sides, to each row pixel cell power supply in pel array, can also be positioned in addition the left and right sides, to each row pixel cell power supply in pel array.Power distribution cable 503a, the 503b that power distribution cable 502a, the 502b that described the first power distribution cable group comprises and described second source branch line group comprise is electrically connected with multiple described pixel cell 501a, 501b, 501c respectively.
Wherein, described the first power distribution cable group and described second source branch line group are arranged in an alternating manner, for example, as shown in Figure 5, are followed successively by from left to right: the first power distribution cable 502a, second source branch line 503a, the first power distribution cable 502b, second source branch line 503b; And, described the first power distribution cable 502a, 502b is only electrically connected with described first power bus 502 of described pel array one side, adjacent described second source branch line 503a, and 503b is only electrically connected with the described second source bus 503 of described pel array opposite side.
Fig. 6 is the sketch of power lead in Fig. 5, can more clearly find out the arrangement mode of power lead in Fig. 5, and in the present embodiment, power distribution cable group only comprises a power distribution cable, and in other embodiments, power distribution cable group can also comprise the power distribution cable of many.Fig. 5 and Fig. 6 show the situation that each power distribution cable group only comprises a power distribution cable, and in addition, each power distribution cable group can also comprise the power distribution cable more than, for example:
Fig. 7 is the another kind of sketch of the array of display substrate of the present embodiment, as shown in Figure 7, different from the power lead shown in Fig. 6, and each the first power distribution cable group comprises two power distribution cables (as Figure 70 2a-1 and 702a-2; 702b-1 and 702b-2; 702c-1 and 702c-2; 702d-1 and 702d-2; 702e-1 and 702e-2), each second source branch line group comprises respectively two power distribution cables (as Figure 70 3a-1 and 703a-2; 703b-1 and 703b-2; 703c-1 and 703c-2; 703d-1 and 703d-2; 703e-1 and 703e-2), and the power distribution cable number comprising in the power distribution cable group being connected with the power bus of both sides equates, is all 1 or is all 2.
Fig. 8 is the another kind of sketch of the array of display substrate of the present embodiment, and as shown in Figure 8, in Fig. 8, each the first power distribution cable group being connected with the first power bus 802 all comprises two power distribution cables (as Figure 80 2a-1 and 802a-2; 802b-1 and 802b-2; 802c-1 and 802c-2; 802d-1 and 802d-2; 802e-1 and 802e-2), and the each second source branch line group being connected with second source bus 803 all comprises a power distribution cable (as Figure 80 3-a, 803-b, 803-c, 803-d, 803-e).
Fig. 9 is the another kind of sketch of the array of display substrate of the present embodiment, and as shown in Figure 9, each the first power distribution cable group being connected with the first power bus 902 all comprises two power distribution cables (as Figure 90 2a-1 and 902a-2; 902b-1 and 902b-2; 902c-1 and 902c-2; 902d-1 and 902d-2; 902e-1 and 902e-2), and the power distribution cable bar (as Figure 90 3a, 903b, 903e, 903f) that the part second source branch line group being connected with second source bus 903 comprises and two power distribution cables that part second source branch line group comprises are (as Figure 90 3c-1 and 903c-2; 903d-1 and 903d-2).
In addition, with all not identical (accompanying drawing is not shown) of power distribution cable number comprising in the connected power distribution cable group of the power bus of both sides.Except above example, the power distribution cable number that each power distribution cable group comprises can also be other arbitrary numbers.
Although the power distribution cable number comprising for each power distribution cable group in theory does not limit, but, the visual effect of watching in order not affect human eye, the number of each power distribution cable power distribution cable that group comprises is subject to following conditionality: the width sum of two adjacent power distribution cable groups can not be greater than the minimum resolution that human eye can be identified,, in two adjacent power distribution cable groups, be not more than at a distance of the distance between two power distribution cables farthest the minimum resolution that human eye can be identified, in the specific implementation can be by described distance limit in 100 μ m.
In order to drive the each pixel comprising in pel array to show, as shown in Figure 5, the array base palte of organic light emitting display also comprises data driver 504 and scanner driver 505 conventionally, wherein, data driver 504 is positioned at a side of described pel array, for providing data-signal to described multiple pixel cell 501a, 501b, 501c, scanner driver 505 is positioned at least one side of described pel array, for providing sweep signal to described multiple pixel cell 501a, 501b, 501c; Also comprise in addition the ground wire GND (not shown) that is connected to peripheral circuit.The present invention does not limit the particular location of data driver 504 and scanner driver 505.
As shown in Figure 5, in described pel array, each described pixel cell structure is identical, and each pixel cell structure includes the first film transistor M1, the second thin film transistor (TFT) M2, a capacitor Cst and a light emitting diode D; The sweep signal being provided by described scanner driver 505 is provided the grid of described the first film transistor M1, the data-signal being provided by described data driver 504 is provided the first electrode of described the first film transistor M1, and the second electrode of described the first film transistor M1 connects the first end of described capacitor Cst and the grid of described the second thin film transistor (TFT) M2; The second end of described capacitor Cst connects the first electrode of described the second thin film transistor (TFT) M2; The first electrode of described the second thin film transistor (TFT) M2 connects a corresponding power distribution cable in described the first power distribution cable group or described second source branch line group, and the second electrode of described the second thin film transistor (TFT) M2 connects the anode of described light emitting diode D; The plus earth of described light emitting diode D.Wherein, described the first film transistor M1 is P type, and described the second thin film transistor (TFT) M2 is N-type, and the first electrode is that source electrode, the second electrode are drain electrode.
The technical scheme of the present embodiment is not in the situation that changing aperture opening ratio and technology difficulty, only by the power signal line VDD that again arranges, power supply is provided in the mode mutually replacing from pel array two ends respectively, because the resolution of human eye does not reach pixel scale, therefore can not differentiate the difference of neighbor brightness, human eye can be regarded neighbor as an entirety, from visually, such VDD arrangement mode can be realized luminance compensation, thereby solve display panel entirety and show uneven problem, change very little to prior art, can reach with lower cost the object of even demonstration, and can extend serviceable life of luminescent device.
Embodiment bis-
The present embodiment also provides a kind of organic light emitting display, comprises the array base palte of the organic light emitting display described in embodiment mono-.Array of display substrate can be used as one independently unit module provide, utilize existing organic light emitting display manufacturing technology just can produce the organic light emitting display using array of display substrate described in embodiment mono-as basic display unit, without changing existing technology difficulty.
The organic light emitting display of constructing based on foregoing array of display substrate can be widely used in the small-medium size such as mobile phone, digital camera, music player, instrument and meter and show field, and the large scale such as computer, TV shows and the various demonstrations field such as flexible demonstration.
The technical scheme of the present embodiment can realize the luminance compensation of display pannel in the situation that not changing technology difficulty, solve display panel entirety and show uneven problem, change very little to prior art, can reach with lower cost the object of even demonstration, and serviceable life of luminescent device in can prolonged display.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious variations, readjust and substitute and can not depart from protection scope of the present invention.Therefore, although the present invention is described in further detail by above embodiment, the present invention is not limited only to above embodiment, in the situation that not departing from the present invention's design, can also comprise more other equivalent embodiment, and scope of the present invention is determined by appended claim scope.
Claims (12)
1. an array base palte for organic light emitting display, comprising:
Pel array, comprises multiple pixel cells that array way is arranged that are;
Power lead, comprise the first power bus and multiple the first power distribution cable group, second source bus and multiple second source branch line group, described the first power bus and described second source bus lay respectively at the relative both sides of described pel array, and described the first power distribution cable group and described second source branch line group comprise that respectively at least one power distribution cable and described power distribution cable are electrically connected with multiple described pixel cells;
Wherein, described the first power distribution cable group and described second source branch line group are alternately arranged, and described the first power distribution cable group is only electrically connected with described first power bus of described pel array one side, adjacent described second source branch line group is only electrically connected with the described second source bus of described pel array opposite side.
2. the array base palte of organic light emitting display as claimed in claim 1, described the first power distribution cable group equates with power distribution cable number in described second source branch line group.
3. the array base palte of organic light emitting display as claimed in claim 2, in described the first power distribution cable group and described second source branch line group, the number of power distribution cable is 1 or 2.
4. el display device as claimed in claim 1, in described the first power distribution cable group and described second source branch line group, power distribution cable number is unequal.
5. the array base palte of organic light emitting display as claimed in claim 4, in described the first power distribution cable group, the number of power distribution cable is 1, in described second source branch line group, the number of power distribution cable is 2; Or the number of power distribution cable is 2 in described the first power distribution cable group, in described second source branch line group, the number of power distribution cable is 1.
6. the array base palte of organic light emitting display as claimed in claim 1, is characterized in that, also comprises data driver, is positioned at a side of described pel array, for providing data-signal to described multiple pixels; Scanner driver, is positioned at least one side of described pel array, for providing sweep signal to described multiple pixels; And, be connected to the ground wire GND of peripheral circuit.
7. the array base palte of organic light emitting display as claimed in claim 6, in described pel array, each described pixel cell comprises the first film transistor, the second thin film transistor (TFT), a capacitor and a light emitting diode;
The sweep signal being provided by described scanner driver is provided the transistorized grid of described the first film, the data-signal being provided by described data driver is provided transistorized the first electrode of described the first film, and transistorized the second electrode of described the first film connects the first end of described capacitor and the grid of described the second thin film transistor (TFT);
The second end of described capacitor connects the first electrode of described the second thin film transistor (TFT);
The first electrode of described the second thin film transistor (TFT) connects a corresponding power distribution cable in described the first power distribution cable group or described second source branch line group, and the second electrode of described the second thin film transistor (TFT) connects the anode of described light emitting diode;
The plus earth of described light emitting diode.
8. the array base palte of organic light emitting display as claimed in claim 7, described the first film transistor is P type, described the second thin film transistor (TFT) is N-type, and the first electrode is that source electrode, the second electrode are drain electrode.
9. organic light-emitting display device as claimed in claim 1, is characterized in that, described the first power bus and described second source bus lay respectively at the relative both sides of described pel array minor face.
10. the array base palte of organic light emitting display as claimed in claim 1, is characterized in that, described the first power bus and described second source bus lay respectively at the relative both sides on the long limit of described pel array.
The array base palte of 11. organic light emitting displays as claimed in claim 1, is characterized in that, in adjacent described the first power distribution cable group and second source branch line group, is not more than 100 μ m at a distance of the distance between two power distribution cables farthest.
12. 1 kinds of displays, comprise the array base palte of the organic light emitting display as described in claim 1-10.
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| CN110148599A (en) * | 2019-04-28 | 2019-08-20 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| US11049884B2 (en) | 2019-04-28 | 2021-06-29 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and method of manufacturing same, and display module |
| CN110416265A (en) * | 2019-07-29 | 2019-11-05 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and ageing method, organic light-emitting display device |
| CN110416265B (en) * | 2019-07-29 | 2022-02-01 | 武汉天马微电子有限公司 | Organic light-emitting display panel, aging treatment method and organic light-emitting display device |
| WO2021072606A1 (en) * | 2019-10-14 | 2021-04-22 | 京东方科技集团股份有限公司 | Display substrate and amoled display device |
| CN111077399A (en) * | 2019-12-31 | 2020-04-28 | 苏州精濑光电有限公司 | Aging furnace |
| CN111445841A (en) * | 2020-05-14 | 2020-07-24 | 京东方科技集团股份有限公司 | Display device and detection method thereof |
| WO2023159669A1 (en) * | 2022-02-24 | 2023-08-31 | Tcl华星光电技术有限公司 | Display panel and display device |
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Effective date of registration: 20211104 Address after: No.8, liufangyuan Henglu, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICRO-ELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Patentee after: Tianma Micro-Electronics Co.,Ltd. Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. Patentee before: Tianma Micro-Electronics Co.,Ltd. |