CN1584956B - Organic LED displaying panels with uniform height - Google Patents
Organic LED displaying panels with uniform height Download PDFInfo
- Publication number
- CN1584956B CN1584956B CN 200410049266 CN200410049266A CN1584956B CN 1584956 B CN1584956 B CN 1584956B CN 200410049266 CN200410049266 CN 200410049266 CN 200410049266 A CN200410049266 A CN 200410049266A CN 1584956 B CN1584956 B CN 1584956B
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- supply unit
- display panel
- organic led
- sectional area
- scanning line
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- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims description 13
- 230000035876 healing Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
A display panel having a base plate with organic luminous diode is featured as setting a picture element matrix on base plate to transmit a driving signal to picture element matrix, using multiple wire to connect scanning line to a power supply for providing driving signal to each scanning line as that each wire has different section area following different distance to power supply.
Description
Technical field
The present invention puts it briefly, and (organic light-emitting diode, OLED) display panel refer in particular to a kind of organic LED display panel that uniform luminance is provided about a kind of Organic Light Emitting Diode.
Background technology
Organic Light Emitting Diode is originally as a current driving element, its luminosity decides according to the size by electric current, at present Organic Light Emitting Diode is applied in the size of promptly passing through the drive current of control Organic Light Emitting Diode on the matrix form display panel, reaches the effect that shows different brightness (being called gray-scale value again).
According to the difference of type of drive, the matrix form display panel can be divided into two kinds of passive type matrix display panel and active type matrix display panels.The characteristics of passive type matrix display panel are every row or every row pixel arrangement one drive circuit, driven sweep line in proper order, to drive the pixel be positioned at different rows/list one by one, therefore the fluorescent lifetime of each pixel that go/lists can be subject to the sweep frequency and the number of scanning lines of display panel, relatively is not suitable for the display panel of big picture and high definition (the expression sweep trace increases).The active type matrix display panel then forms independently switch (the moving circuit in district) in each pixel, comprise a capacitor, an Organic Light Emitting Diode light-emitting component and at least two thin film transistor (TFT)s, regulate the size of the drive current of Organic Light Emitting Diode to utilize driving circuit, therefore, still can provide bigger light output quantity, than gay colours and reaction time faster even under the requirement of big picture and high definition.
Adopt the passive type matrix or the organic LED display panel of active type matrix design no matter be, when the drive current maldistribution of Organic Light Emitting Diode, all can cause having on the display panel for example wall shape (mura) phenomenon of the uneven defective of bright dark degree.Along with the far and near difference between the distance supply unit, be connected in supply unit and just have different impedances with power lead itself between picture element matrix, and every sweep trace is provided with far and near different also can the cause different impedance consumption of position apart from supply unit, therefore this impedance contrast is apart from the brightness irregularities that will cause organic LED display panel, especially along with the making of large size panel, pixel intensity homogeneity on the display panel is not good may to cause the gray-scale value of whole display panel and gray-scale value that driving circuit is sent difference to some extent, even causes image fault.
Summary of the invention
Therefore, purpose of the present invention is promptly providing a kind of organic LED display panel that uniform luminance is provided.
In preferred embodiment of the present invention, this organic LED display panel includes a substrate, one picture element matrix is located on the substrate, the multi-strip scanning line is located at substrate surface, be used for transmitting a drive signal to picture element matrix, and many leads are used for connecting above-mentioned sweep trace at least one supply unit, be passed to each sweep trace with the drive signal that supply unit is provided, and these leads comprise the sectional areas of at least two different sizes.
Because changing, the present invention is connected in the sectional area of the lead between supply unit and sweep trace to improve the difference of its contact impedance, for example has the big sectional area of healing apart from the distance of the supply unit lead far away of healing, lead apart from the close together of supply unit has less sectional area, therefore can avoid lead that the problem that impedance increases takes place along with the far and near different of distance supply unit.In addition, the present invention can also further change the sectional area of each sweep trace, for example has the big sectional area of healing apart from the distance of the supply unit sweep trace far away of healing, sweep trace apart from the close together of supply unit has less sectional area, can reach equally and improve the uneven purpose of distribution of impedance.Because organic LED display panel of the present invention can provide distribution of impedance comparatively uniformly, the therefore variety of issue that can effectively improve brightness irregularities and derive.
Description of drawings
Fig. 1 and Fig. 2 are the structural representation of the present invention's one organic LED display panel.
The reference numeral explanation
10 substrates, 20 scan line driver
30 datawire drivers, 40 control circuits
50 supply units, 52 power leads
D1～D8 data line S1～S160 sweep trace
X1～X7, Y1～Y8 lead
Embodiment
Please refer to Fig. 1, Fig. 1 is the structural representation of the present invention's one organic LED display panel.As shown in Figure 1, organic LED display panel of the present invention includes a substrate 10, one by the multi-strip scanning line (for example (for example the picture element matrix of D1～D8) defined is located on the substrate 10 for S1～S7) and many data lines, sweep trace S1～S7 is connected at least one scan line driver 20, with the drive signal of transmitting one switch/addressing to picture element matrix, data line D1～D8 is connected at least one datawire driver 30, to receive a viewdata signal and to be passed in the picture element matrix.
For fear of with supply unit Vx between the far and near different inhomogeneous and uneven problems of each pixel intensity of distribution of impedance on the organic LED display panel that cause of distance, the present invention is connected in the sectional area of the lead X1～X7 between supply unit Vx and sweep trace S1～S7 with change, or the sectional area of change sweep trace S1～S7, improve the uneven situation of distribution of impedance.
Please refer to Fig. 2, Fig. 2 is the rough schematic view of organic LED display panel shown in Figure 1.In order to illustrate further feature of the present invention place, only display power supply device and sweep trace among Fig. 2, other electronic components on the organic LED display panel are techniques well known, do not repeat them here.As shown in Figure 2, substrate 10 is provided with multi-strip scanning line S1～S160, one external power source device 50 utilizes a main power lead 52 to provide current to each sweep trace S1～S160, utilize many leads (for example touch pore structure, represent with the circle circle among Fig. 2) to be connected between power lead 52 and sweep trace S1～S160.Wherein the number of sweep trace can be adjusted to some extent along with the size difference of organic LED display panel.
In preferred embodiment of the present invention, change the contact impedance that lead causes between power lead 52 and sweep trace S1～S160, distance along with distance supply unit 50 positions, progressively increase the sectional area size of lead (touching the hole), for example has the big sectional area of healing apart from the distance of supply unit 50 lead far away of healing, lead apart from the close together of supply unit has less sectional area, therefore make the lead contact impedance add that power lead 52 impedances own can reach the impedance unanimity that each bar sweep trace S1～S160 is assigned to, and then the uniformity of luminance of increase organic LED display panel, for instance, do not utilizing before adjustment of the present invention touches the hole contact impedance, the amount of resistance measured value that touches the both sides, hole that is connected between power lead 52 and sweep trace S1 is respectively 18.8 Ω and 31.94 Ω, the amount of resistance measured value that touches the both sides, hole that is connected between power lead 52 and sweep trace S3 is respectively 25.24 Ω and 38.77 Ω, and the amount of resistance measured value that touches the both sides, hole that is connected between power lead 52 and sweep trace S160 is respectively 44.82 Ω and 52.8 Ω.Can find clearly by these amount of resistance measured values, the impedance meeting of power lead 52 own is along with distance supply unit 50 far and gradually increases, therefore the sectional area in hole is touched in adjustment of the present invention, make apart from supply unit 50 hole of touching far away of healing and have bigger sectional area and less contact impedance (impedance is inversely proportional to sectional area approximately), utilize the sectional area size to come the resistance difference of offset supply line 52 itself, reach the purpose of impedance matching.
In another embodiment of the present invention, change the sectional area of sweep trace S1～S160, for example along with the distance of distance supply unit 50 positions, progressively increase the live width size of sweep trace S1～S160, make the sweep trace impedance add that power lead 52 impedances own can reach that each pixel all has identical impedance consumption in the picture element matrix, and then increase the uniformity of luminance of organic LED display panel.In addition, in other embodiments of the invention, can also look actual needs in conjunction with among above-mentioned two embodiment, adjust the sweep trace live width simultaneously and be connected in power lead and sweep trace between sectional area of wire, or other leads form distribution of impedance uniformly with the resistance difference of offset supply line itself on the adjustment organic LED display panel.
Compare with the organic LED display panel of routine, the sectional area that the present invention's change is connected in the lead between supply unit and sweep trace is to improve the difference of contact impedance on the display panel, and the sectional area that perhaps changes each sweep trace improves the uneven purpose of distribution of impedance on the display panel to reach.Because organic LED display panel of the present invention can provide distribution of impedance comparatively uniformly, the therefore variety of issue that can effectively improve brightness irregularities and derive.
The above only is preferred embodiment of the present invention, and all equivalences of carrying out according to claim of the present invention change and revise, and all should belong to covering scope of the present invention.
Claims (3)
1. organic LED display panel that uniform luminance can be provided, this organic LED display panel includes:
One substrate includes a picture element matrix on this substrate;
The multi-strip scanning line is located at this substrate surface, is used for transmitting a drive signal to this picture element matrix; And
Many leads, be used for connecting this multi-strip scanning line at least one supply unit, be passed to respectively this sweep trace with the drive signal that this supply unit is provided, it is characterized in that, these many leads have different sectional areas, the sectional area of these many leads changes along with the distance of these many leads and this supply unit, and the sectional area of the lead far away apart from this supply unit is big, and the sectional area of the lead near apart from this supply unit is little.
2. organic LED display panel that uniform luminance can be provided, this organic LED display panel includes:
One substrate includes a picture element matrix on this substrate; And
The multi-strip scanning line is located at this substrate surface, is used for transmitting a drive signal to this picture element matrix, it is characterized in that, this multi-strip scanning line has different sectional areas, and wherein, this multi-strip scanning line is connected at least one supply unit,
The sectional area of this multi-strip scanning line changes along with the distance of this multi-strip scanning line and this supply unit, and the sectional area of the sweep trace far away apart from this supply unit is big, and the sectional area of the sweep trace near apart from this supply unit is little.
3. organic LED display panel as claimed in claim 2, wherein this multi-strip scanning line is electrically connected at least one supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410049266 CN1584956B (en) | 2004-06-07 | 2004-06-07 | Organic LED displaying panels with uniform height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410049266 CN1584956B (en) | 2004-06-07 | 2004-06-07 | Organic LED displaying panels with uniform height |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584956A CN1584956A (en) | 2005-02-23 |
| CN1584956B true CN1584956B (en) | 2010-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410049266 Expired - Lifetime CN1584956B (en) | 2004-06-07 | 2004-06-07 | Organic LED displaying panels with uniform height |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329043B (en) * | 2007-06-18 | 2010-09-01 | 南茂科技股份有限公司 | Light source component and lightness adjusting method for the same |
| CN103456743B (en) * | 2013-09-04 | 2016-11-23 | 京东方科技集团股份有限公司 | Array base palte and preparation method thereof, flexible display device and electronic equipment |
| CN104733601B (en) * | 2013-12-20 | 2017-11-28 | 祯信股份有限公司 | Light emitting diode film circuit board and decoration material |
| CN105788516B (en) * | 2014-12-23 | 2019-03-26 | 昆山国显光电有限公司 | OLED display panel and its manufacturing method and active matrix/organic light emitting display |
| CN108389880B (en) * | 2018-02-23 | 2020-11-10 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and OLED display |
| CN111007917A (en) * | 2018-10-04 | 2020-04-14 | 群创光电股份有限公司 | Electronic device |
| US11042062B2 (en) | 2018-10-04 | 2021-06-22 | Innolux Corporation | Electronic 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 |
| CN112213885A (en) * | 2020-10-14 | 2021-01-12 | Tcl华星光电技术有限公司 | Backlight module and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2372749Y (en) * | 1998-12-31 | 2000-04-05 | 海信集团公司 | Electroluminescence display device |
| JP2003303687A (en) * | 2002-02-06 | 2003-10-24 | Hitachi Ltd | Organic luminous display device |
-
2004
- 2004-06-07 CN CN 200410049266 patent/CN1584956B/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2372749Y (en) * | 1998-12-31 | 2000-04-05 | 海信集团公司 | Electroluminescence display device |
| JP2003303687A (en) * | 2002-02-06 | 2003-10-24 | Hitachi Ltd | Organic luminous display device |
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| Publication number | Publication date |
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| CN1584956A (en) | 2005-02-23 |
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Granted publication date: 20100428 |