CN101923826A - Active matrix organic light-emitting display with alternating working sub-pixels - Google Patents
Active matrix organic light-emitting display with alternating working sub-pixels Download PDFInfo
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Abstract
The invention relates to an active matrix organic light-emitting display, in particular to an active matrix organic light-emitting display with alternating working sub-pixels. In the technical scheme of the invention, the purpose on prolonging the integral service life of the display is achieved through dividing each pixel unit in a TFT (Thin Film Transistor) array substrate into two or more sub-pixels and making each sub-pixel alternatively emit light, meanwhile, the probability on the occurrence of permanent dead pixels on the screen can be reduced, and therefore, the product yield is improved.
Description
Technical field
The present invention relates to a kind of active-matrix organic light emitting display, particularly a kind of active-matrix organic light emitting display with alternating working sub-pixels.
Background technology
In recent years, because in light weight, advantage such as volume is little, flat-panel monitor especially LCD (LCD) and organic light emitting display (OLED) is widely used in display terminals such as cell phone, digital camera, notebook computer and flat panel TV.Owing to have brightness, viewing angle properties, response speed and the display effect that is better than LCD, OLED is acknowledged as flat-panel monitor of future generation, and particularly the advantage of active-matrix organic light emitting display (AMOLED) is more outstanding.AMOLED realizes luminous Presentation Function by form the OLED pixel device on thin film transistor (TFT) (TFT) array base palte.At present in the process of AMOLED scale of mass productionization since TFT substrate technology that is that all right is ripe, it is on the low side to cause AMOLED to produce yield, is restricting the decline of AMOLED panel cost; On the other hand, because the life-span of OLED luminescent material is also not fully up to expectations, make the life-span of AMOLED also have very big room for promotion.From certain angle, the production yield of AMOLED and life problems are the bottlenecks of its extensive development of restriction, and the purpose of technical solution of the present invention also is intended to solve above-mentioned bottleneck.
Summary of the invention
At above-mentioned defective, the purpose of this invention is to provide a kind of active-matrix organic light emitting display, to improve it in the problem aspect yield and life-span with alternating working sub-pixels.
The objective of the invention is to be achieved by following technical solution:
The invention provides a kind of active-matrix organic light emitting display with alternating working sub-pixels, comprise a plurality of pixel cells, a plurality of sweep trace and a plurality of data line, wherein a plurality of pixel cells are arranged on tft array substrate, and each pixel cell comprises at least two sub-pixels, especially, each pixel cell comprises two sub-pixels or three sub-pixels, and can also comprise red, green, blue three looks inferior sub-pixel in each sub-pixel.Each sub-pixel of same pixel cell is electrically connected with corresponding sweep trace separately respectively, all is electrically connected with the data line of this pixel cell again simultaneously.Each sub-pixel of same pixel cell one after the other when work is luminous, promptly show in the time of a two field picture at display, have only in each sub-pixel of same pixel cell one luminous, in the time that shows the next frame image, it is luminous to take over last one luminous sub-pixel by another sub-pixel.
Technical solution of the present invention is by being divided into two or more sub-pixels with each pixel cell, and makes each sub-pixel alternately luminous, reaches the purpose that prolongs the display bulk life time.Because each pixel contains two or more sub-pixels, can the sub-pixel that have defective be lost efficacy simultaneously, only stay sub-pixel working properly, can reduce the probability that permanent bad point appears in screen like this, thereby improve the product yield by laser technology.
Description of drawings
Fig. 1 prior art pixel cell structure synoptic diagram;
Fig. 2 embodiment of the invention 1 structural representation;
Fig. 3 embodiment of the invention 1 effect synoptic diagram;
Fig. 4 embodiment of the invention 2 structural representations.
Description of reference numerals is as follows:
Pixel body 1-1 data line group 1-2
Data line 2-6,3-7,4-8 scanline groups 1-3
Pixel groups 2-1,3-1, the strange sub-pixel 2-2 of 4-1,3-2
Idol sub-pixel 2-3, the strange sweep trace 2-4 of 3-3,3-5
Idol sweep trace 2-5,3-6 striking point 3-4
A sub-pixel 4-2 B sub-pixel 4-3
C sub-pixel 4-4 A sweep line 4-5
B sweep trace 4-6 C sweep trace 4-7
Pixel cell 10,100
Embodiment
For allowing foregoing of the present invention become apparent, preferred embodiment cited below particularly, and be described in detail below in conjunction with the accompanying drawings.
Fig. 1 is a prior art pixel cell structure synoptic diagram, as shown in the figure, each pixel cell 10 comprises pixel body 1-1 and the data line 1-2 and the sweep trace 1-3 that are electrically connected with pixel body 1-1 respectively in the tft array substrate, wherein comprise red, green, blue three look sub-pix (not shown)s in the pixel body 1-1, each sub-pix comprises switching TFT, drive TFT and OLED device.Pixel body 1-1 obtains switch order by scanline groups 1-3, obtains video data to realize luminous Presentation Function by data line group 1-2.In case a permanent bad point just can appear in the inefficacy and certain the pixel body 1-1 in the tft array breaks down on display, influence display quality.
Embodiment 1
Fig. 2 is the embodiment of the invention 1 structural representation.As shown in the figure, each pixel cell 100 comprises a pixel groups 2-1 in the tft array substrate of display of the present invention, this pixel groups 2-1 is made up of a strange sub-pixel 2-2 and an even sub-pixel 2-3, very, include switching TFT, drive TFT and OLED device in the even sub-pixel pixel body separately, wherein strange sub-pixel 2-2 is electrically connected with strange sweep trace 2-4 and data line 2-6 respectively, strange sub-pixel 2-2 obtains switch order by strange sweep trace 2-4, obtains video data to realize luminous Presentation Function by data line 2-6; Idol sub-pixel 2-3 is electrically connected with even sweep trace 2-5 and data line 2-6 respectively, and even sub-pixel 2-3 obtains switch order by even sweep trace 2-5, obtains video data to realize luminous Presentation Function by data line 2-6.In the display course of work, when showing a two field picture, strange sub-pixel 2-2 in the same pixel groups and even sub-pixel 2-3 the two only have one to be lighted.By way of example, when showing a certain two field picture, control circuit is chosen strange sweep trace 2-4, but does not choose even sweep trace 2-5, realize that strange sub-pixel 2-2 is lighted, and even sub-pixel 2-3 is not luminous; When showing the next frame image, control circuit is chosen even sweep trace 2-5, but does not choose strange sweep trace 2-4, realizes that even sub-pixel 2-3 is lighted, and strange sub-pixel 2-2 is not luminous.According to above-mentioned working method, two sub-pixel one after the others of odd even are luminous, realize that the display bulk life time prolongs one times.Though among the present invention at one time the odd even sub-pixel only have one luminous, but because OLED device luminosity height, the frequency of odd even sub-pixel alternation simultaneously surpasses the perception of human eyes scope, therefore can not produce materially affect to the whole visual effect that human eye is experienced.
Fig. 3 is the embodiment of the invention 1 an effect synoptic diagram, and in the present invention, strange sub-pixel 3-2 in the same pixel groups 3-1 and even sub-pixel 3-3 be redundant sub-pixels each other, if there is defective in certain sub-pixel, can utilizes laser that it is formed striking point 3-4 and make its inefficacy.For example, if there is defective in the strange sub-pixel 3-2 among the pixel groups 3-1, for example there is defective in its switching TFT, can make this sub-pixel not luminous by the lead-in wire fusing of laser with switching TFT, and it is luminous only to keep another normal even sub-pixel 3-3.Compare with traditional tft array substrate, had only among the present invention when two sub-pixels all lose efficacy in the same pixel groups and just permanent bad point can occur, and the probability that the probability that two sub-pixels lost efficacy simultaneously lost efficacy well below the single pixel of tradition, so just, can reduce the quantity of permanent bad point greatly, be equivalent to improve the product yield to a certain extent.
Technical solution of the present invention can be widely used in mobile communication equipment, video playback apparatus and the various display device.
Embodiment 2
Fig. 4 is the embodiment of the invention 2 structural representations.As shown in the figure, compare with embodiment 1, pixel groups 4-1 comprises three sub-pixels in the present embodiment: A sub-pixel 4-2, B sub-pixel 4-3 and C sub-pixel 4-4, A, B, three sub-pixels of C are electrically connected with A sweep line 4-5, B sweep trace 4-6, C sweep trace 4-7 respectively, and A, B, three sub-pixels of C all are electrically connected with data line 4-8 again simultaneously.In the display course of work, A, B, three sub-pixels of C are luminous in turn successively, finish the demonstration of a two field picture separately, thereby realize the prolongation of display bulk life time.And had only when three sub-pixels in the same pixel groups lost efficacy simultaneously, display just permanent bad point can occur.Other are with embodiment 1.
Though the present invention is to disclose as above than preferable embodiment; yet it is not in order to limit the present invention; anyly be familiar with this technology personage; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations; therefore, protection scope of the present invention is as the criterion when the claim with application defines.
Claims (10)
1. active-matrix organic light emitting display comprises: a plurality of pixel cells, a plurality of sweep trace and a plurality of data line, and wherein a plurality of pixel cells are arranged on tft array substrate, it is characterized in that, and described pixel cell comprises at least two sub-pixels.
2. active-matrix organic light emitting display according to claim 1 is characterized in that, described pixel cell comprises two sub-pixels.
3. active-matrix organic light emitting display according to claim 1 is characterized in that, described pixel cell comprises three sub-pixels.
4. according to one of any described active-matrix organic light emitting display of claim 1-3, it is characterized in that each sub-pixel of same pixel cell is electrically connected with corresponding sweep trace separately respectively.
5. active-matrix organic light emitting display according to claim 4 is characterized in that, each sub-pixel of same pixel cell all is electrically connected with the data line of this pixel cell.
6. according to one of any described active-matrix organic light emitting display of claim 5, it is characterized in that each sub-pixel of same pixel cell one after the other when work is luminous.
7. active-matrix organic light emitting display according to claim 6, it is characterized in that, show in the time of a two field picture at display, have only in each sub-pixel of same pixel cell one luminous, in the time that shows the next frame image, it is luminous to take over last one luminous sub-pixel by another sub-pixel.
8. a mobile communication equipment is characterized in that, described mobile communication equipment comprises active-matrix organic light emitting display as claimed in claim 6.
9. a video playback apparatus is characterized in that, described video playback apparatus comprises active-matrix organic light emitting display as claimed in claim 6.
10. a display device is characterized in that, described display device comprises active-matrix organic light emitting display as claimed in claim 6.
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| CN103985354A (en) * | 2014-05-15 | 2014-08-13 | 深圳市华星光电技术有限公司 | Array substrate and display panel |
| CN104361862A (en) * | 2014-11-28 | 2015-02-18 | 京东方科技集团股份有限公司 | Array substrate, drive method thereof, display panel and display device |
| WO2016183882A1 (en) * | 2015-05-21 | 2016-11-24 | 深圳市华星光电技术有限公司 | Display device and drive method therefor |
| WO2020147452A1 (en) * | 2019-01-18 | 2020-07-23 | 京东方科技集团股份有限公司 | Driving method for display panel, and display device |
| CN111883078A (en) * | 2020-07-28 | 2020-11-03 | 惠科股份有限公司 | Display panel driving method and display device |
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| CN115294933A (en) * | 2022-09-26 | 2022-11-04 | 惠科股份有限公司 | Display panel, display module and display device |
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