CN1949531A - Light emitting device - Google Patents
Light emitting device Download PDFInfo
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- CN1949531A CN1949531A CNA2006101007361A CN200610100736A CN1949531A CN 1949531 A CN1949531 A CN 1949531A CN A2006101007361 A CNA2006101007361 A CN A2006101007361A CN 200610100736 A CN200610100736 A CN 200610100736A CN 1949531 A CN1949531 A CN 1949531A
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- 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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
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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]
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- 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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
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- 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
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- 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
- H10K59/17—Passive-matrix OLED displays
- H10K59/173—Passive-matrix OLED displays comprising banks or shadow masks
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Abstract
The present invention relates to a light emitting device where difference of brightness of pixels can be reduced when the same data currents are applied to the pixels. The light emitting device includes anode electrode layers, cathode electrode layers, pixels and cathode lines. The anode electrode layers are disposed in a first direction. The cathode electrode layers are disposed in a second direction. The pixels are formed in cross areas of the anode electrode layers and the cathode electrode layers. The cathode lines are coupled to the cathode electrode layers. Here, in one cathode electrode layer, at least one of resistors between parts corresponding to pixels except a first pixel next to a cathode line corresponding to the cathode electrode layer has resistance smaller than resistor between a part corresponding to the first pixel and a part corresponding to a pixel next to the firs pixel.
Description
Technical field
The present invention relates to a kind of light-emitting device, more particularly, the present invention relates to a kind of like this light-emitting device, when each pixel is applied onesize data current, can reduce the luminance difference between each pixel.
Background technology
When light-emitting device was applied scheduled current or voltage, light-emitting device sent the light of a certain wavelength, and particularly, organic electroluminescence device is a selfluminous device.
Fig. 1 is the plane graph that conventional light-emitting device is shown.
In Fig. 1, light-emitting device comprises: anode layer 100, cathode layer 102, pixel 104, wall 106, anode line 108, cathode line 110A and 110B and driver 112.
On first direction, arrange a plurality of anode layers 100.
Be different from the second direction of first direction, arranging a plurality of cathode layers 102.
On the zone of intersection of anode layer 100 and cathode layer 102, form pixel 104.
Anode line 108 is connected to anode layer 100.
Cathode line 110A and 110B are connected to cathode layer 102.
This drive circuit 114 drives pixel 104.
Fig. 2 A is the schematic diagram that the Circuits System of light-emitting device shown in Figure 1 is shown.Fig. 2 B and Fig. 2 C illustrate the schematic diagram that is used to drive the processing procedure of light-emitting device shown in Fig. 2 A.
In Fig. 2 A, light-emitting device comprises pixel E11 to E64 and driver 112.
Utilization is from the video data of external equipment (not shown) input, controller 200 gated sweep drive circuits 202 and 204 and data drive circuit 206.
First scan drive circuit 202 is sent to some scan line among the scan line S1 to S4 with first sweep signal, for example, and S1 and S3.Second scan drive circuit 204 is sent to other scan lines S2 and S4 with second sweep signal.Therefore, scan line S1 to S4 order ground connection is as described below.
Data drive circuit 206 has a plurality of current source CS1 to CS6, and will be corresponding to video data, deliver to data wire D1 to D6 from the data current of current source CS1 to CS6 output.Therefore, pixel E11 to E64 is luminous.
After this, will be with reference to the processing procedure of figure 2A to Fig. 2 C explanation driven for emitting lights device.
At first, shown in Fig. 2 B, the first scan line S1 ground connection of scan line S1 to S4, and other scan lines S2 to S4 is connected to the non-light emitting source that voltage is V1, wherein voltage V1 has identical amplitude with the driving voltage Vc of light-emitting device.
Then, will deliver to data wire D1 to D6 corresponding to the data current I11 to I61 of first video data.In this case, by data wire D1 to D6, pixel E11 to E61 and the first scan line S1, this data current I11 to I61 is sent to ground.Therefore, relevant with first scan line S1 pixel E11 to E61 is luminous.
Then, shown in Fig. 2 C, the second scan line S2 ground connection, and other scan lines S1, S3 and S4 are connected to non-light emitting source.
Subsequently, will be after first video data be input to controller 200, deliver to data wire D1 to D6 corresponding to the data current I12 to I62 of second video data that is input to controller 200.In this case, by data wire D1 to D6, pixel E12 to E62 and the second scan line S2, this data current I12 to I62 is sent to ground.Therefore, luminous corresponding to the pixel E12 to E62 of the second scan line S2.
Utilize said method, luminous corresponding to the pixel E13 to E63 of three scan line S3, then, luminous corresponding to the pixel E14 to E64 of the 4th scan line S4.Subsequently, be unit with scan line S1 to S4, repeat above-mentioned processing procedure luminous in pixel E11 to E64.
After this, by the luminance difference between pixel E11 and the E12, describe the processing procedure that drives pixel E11 to E64 in detail.
At first, resistance between each pixel E11 to E64 and the ground is described.
As shown in Figure 1, on whole zone, each cathode layer 102 all has constant width.Therefore, on a cathode layer, the resistance between the pixel E11 to E64 has identical resistance.Therefore, the resistance between pixel E11 and the ground is Rs, and the resistance between pixel E21 and the ground is Rs+Rp, and the resistance between pixel E31 and the ground is Rs+2Rp.In addition, the resistance between pixel E41 and the ground is Rs+3Rp, and the resistance between pixel E51 and the ground is Rs+4Rp, and the resistance between pixel E61 and the ground is Rs+5Rp.
After this, suppose and deliver to data wire D1 to D6, so that pixel E11 to E61 has same brightness having onesize data current I11 to I61.
By the respective pixel E11 to E61 and the first scan line S1, data current I11 to I61 is sent to ground.In this case, because data current I11 to I61 has same size, so the cathode voltage VC11 to VC61 of pixel E11 to E61 is directly proportional with resistance between respective pixel and the ground.Therefore, cathode voltage is followed successively by from high to low: VC61, VC51, VC41, VC31, VC21 and VC11.At this, the brightness of pixel E11 to E61 is subjected to the influence of the cathode voltage VC11 to VC61 of pixel E11 to E61.Usually, when onesize data current was delivered to pixel E11 to E61, cathode voltage VC11 to VC61 was high more, and then the brightness of pixel is low more.Therefore, when onesize data current is delivered to pixel E11 to E61, send the light of maximum brightness with pixel E11 corresponding to the minimum resistance in each resistance of pixel E11 to E61.Yet the pixel E61 relevant with the maximum resistance in each resistance sends the light of minimum brightness.
In a word, when onesize data current I11 to I61 is delivered to pixel E11 to E61, utilize the resistance between each pixel E11 to E61 and the ground, the brightness of control pixel E11 to E61.
In Fig. 2 C, the resistance between pixel E12 and the ground is Rs+5Rp.Therefore, send the light of minimum brightness corresponding to the pixel E12 among the pixel E12 to E62 of the second scan line S2.
Below pixel E11 and E12 are compared.
Resistance between pixel E11 and the ground is Rs, but the resistance between pixel E12 and the ground is Rs+5Rp.Therefore, presetting pixel E11 to E12, when having same brightness, that is, when the data current I11 to I12 of identical size was delivered to pixel E11 to E61, E12 compared with pixel, and pixel E11 sends the higher light of brightness.In this case, pixel E12 is near pixel E11, and therefore, the user awares the luminance difference of pixel E11 and E12.
In a word, on this light-emitting device,,, between pixel, still there is luminance difference to have same brightness although preset each pixel.In addition, the user can aware the luminance difference between the pixel E11 to E12.
Summary of the invention
Feature of the present invention provides a kind of light-emitting device that has reduced the luminance difference between the pixel.
Light-emitting device comprises according to an embodiment of the invention: anode layer, cathode layer, pixel and cathode line.Anode layer is arranged with first direction.Cathode layer is arranged with the second direction that is different from first direction.Pixel is formed on the zone of intersection of anode layer and cathode layer.Cathode line is connected to cathode layer.At this, on a cathode layer, at least corresponding near corresponding to the resistance of a resistance between the part of each pixel outside first pixel of the cathode line of this cathode layer less than corresponding to the part of first pixel and corresponding to resistance near the resistance between the part of the pixel of first pixel.
Light-emitting device comprises in accordance with another embodiment of the present invention: anode layer, cathode layer and pixel.Anode layer is arranged with first direction.Cathode layer is arranged with the second direction that is different from first direction.Pixel is formed on second zone of intersection of first zone of intersection of a anode layer in each anode layer and a cathode layer and other anode layers and this cathode layer.At this, one of at least the second zone of intersection is wideer than first zone of intersection.
As mentioned above, light-emitting device of the present invention changes the width of cathode layer, and reducing corresponding to the luminance difference between the pixel of cathode layer, therefore, the user is not aware of the luminance difference of pixel.
Description of drawings
When studying in conjunction with the accompanying drawings,, of the present invention above-mentioned and other feature and advantage are apparent according to the following detailed description of doing.
Fig. 1 is the plane graph that conventional light-emitting device is shown;
Fig. 2 A is the schematic diagram that the Circuits System of light-emitting device shown in Figure 1 is shown;
Fig. 2 B and Fig. 2 C illustrate the schematic diagram that is used to drive the processing procedure of light-emitting device shown in Fig. 2 A;
Fig. 3 is the plane graph that illustrates according to the light-emitting device of first embodiment of the invention;
Fig. 4 A is the cutaway view of the light-emitting device got along the line I-I ' among Fig. 3 according to one embodiment of present invention;
Fig. 4 B is the cutaway view of the light-emitting device got along the line II-II ' among Fig. 3 according to one embodiment of the invention;
Fig. 5 A is the schematic diagram according to the Circuits System of one embodiment of the invention light-emitting device shown in Figure 3;
Fig. 5 B and Fig. 5 C drive the schematic diagram of the processing procedure of light-emitting device according to an embodiment of the invention;
Fig. 6 A is the plane graph according to the light-emitting device of second embodiment of the invention;
Fig. 6 B is the schematic diagram that the Circuits System of light-emitting device shown in Figure 6 is shown;
Fig. 7 A is the schematic diagram that illustrates according to the light-emitting device of third embodiment of the invention;
Fig. 7 B is the schematic diagram that the Circuits System of light-emitting device shown in Fig. 7 A is shown;
Fig. 8 is the plane graph that illustrates according to the light-emitting device of fourth embodiment of the invention;
Fig. 9 A is the schematic diagram that illustrates according to the Circuits System of one embodiment of the invention light-emitting device shown in Figure 8;
Fig. 9 B illustrates to be used to drive the schematic diagram of the processing procedure of light-emitting device according to an embodiment of the invention;
Figure 10 A is the plane graph that illustrates according to the light-emitting device of fifth embodiment of the invention;
Figure 10 B is the schematic diagram that the Circuits System of light-emitting device shown in Figure 10 A is shown;
Figure 11 A is the plane graph that illustrates according to the light-emitting device of sixth embodiment of the invention;
Figure 11 B is the schematic diagram that the Circuits System of light-emitting device shown in Figure 11 A is shown.
Embodiment
Be described in more detail the preferred embodiments of the present invention below with reference to the accompanying drawings.
Fig. 3 is the plane graph that illustrates according to the light-emitting device of first embodiment of the invention.
In Fig. 3, light-emitting device of the present invention comprises: anode layer 300, cathode layer 302, pixel 304, wall 306, anode line 308, cathode line 310A and 310B and driver 312.
Light-emitting device comprises according to an embodiment of the invention: organic electroluminescence device, plasma display panel, LCD etc.Problem as the example of light-emitting device, will illustrate organic electroluminescence device below for convenience of explanation.
Arrange a plurality of anode layers 300 at first direction, and this anode layer 300 is made of indium tin oxide etc. as transparency electrode.
Be different from the second direction of first direction, arranging a plurality of cathode layers 302, and this cathode layer 302 is by constituting such as metal of aluminium Al etc.In addition, the width of each cathode layer 302 increases in a certain direction, as shown in Figure 3.
On the zone of intersection of anode layer 300 and cathode layer 302, form pixel 304.
If this light-emitting device is an organic electroluminescence device, then each pixel 304 is made of anode layer, organic layer and the cathode layer that order is formed on the substrate.When antianode layer and cathode layer applied a certain positive voltage and negative voltage, organic layer sent the light of a certain wavelength.
The first cathode line 310A is connected to some cathode layer 302, and the second cathode line 310B is connected to other cathode layers.
In a word, on a cathode layer, in the direction from first end that is connected to the cathode line relevant with it to second end, its width increases.Therefore, on this cathode layer,, reduce corresponding to the resistance of the resistance of the pixel relevant with this cathode layer in direction from first end to second end.To do explanation with reference to the accompanying drawings to this.
Fig. 4 A is the cutaway view of the light-emitting device got along the line I-I ' among Fig. 3 according to one embodiment of the invention.
On Fig. 4 A,, on substrate 400, form anode layer 300 with predetermined pattern.
On anode layer 300, form organic layer 404.
In addition, between anode layer 300, form dielectric film 402, isolate anode layer 300 with electricity.
On organic layer 404 and dielectric film 402, form the metal material layer 406 that comprises metal material.At this, are cathode layers 302 corresponding to the anode layer 300 of metal material layer 406 and the part of organic layer 404.
Fig. 4 B is the cutaway view of the light-emitting device got along the line II-II ' among Fig. 3 according to one embodiment of the invention.
In Fig. 4 B, on substrate 400, order forms anode layer 300, organic layer 404 and cathode layer 302.At this, when antianode layer 300 and cathode layer 302 applied a certain positive voltage and negative voltage respectively, organic layer 404 sent the light of a certain wavelength.
On dielectric film 402, form wall 306, thereby electricity separates cathode layer 302.
Fig. 5 A is the schematic diagram according to the Circuits System of one embodiment of the invention light-emitting device shown in Figure 3.
In Fig. 5 A, light-emitting device of the present invention comprises: pixel E11 to E64 and driver 312.
Utilization is from the video data of external equipment (not shown) input, controller 500 gated sweep drive circuits 502 and 504 and data drive circuit 506.
First scan drive circuit 502 is delivered to some scan line among the scan line S1 to S4 with first sweep signal, for example, and S1 and S3.Second scan drive circuit 504 is delivered to other scan lines S2 and S4 with second sweep signal.Therefore, scan line S1 to S4 can be sequentially connected to light emitting source.
Data drive circuit 506 comprises a plurality of current source CS1 to CS6, and under the control of controller 500, it with current source CS1 to CS6 output, deliver to data wire D1 to D6 corresponding to the data current of video data.Therefore, pixel E11 to E64 is luminous.
Processing procedure below with reference to Fig. 5 B and Fig. 5 C detailed description driven for emitting lights device.
Fig. 5 B and Fig. 5 C drive the schematic diagram of the processing procedure of light-emitting device according to an embodiment of the invention.
At first, the first scan line S1 among the scan line S1 to S4 is connected to the light emitting source of preferred ground connection, shown in Fig. 5 B.Other scan lines S2 to S4 is connected to the non-light emitting source that voltage is V1, and wherein voltage V1 has identical amplitude with the driver element Vc of light-emitting device.Suppose this light emitting source ground connection below.
Subsequently, will deliver to data wire D1 to D6 corresponding to the data current I11 to I61 of first video data.In this case, by data wire D1 to D6, pixel E11 to E61 and the first scan line S1, I11 to I61 is sent to ground with data current.Therefore, luminous corresponding to the pixel E11 to E61 of the first scan line S1.
Then, the second scan line S2 ground connection among the scan line S1 to S4, and other scan lines S1, S3 and S4 are connected to non-light emitting source.
Subsequently, will be after first video data be input to controller 500, deliver to data wire D1 to D6 corresponding to the data current I11 to I61 of second video data that is input to controller 500, shown in Fig. 5 C.In this case, by data wire D1 to D6, pixel E12 to E62 and the first scan line S2, I12 to I62 is sent to ground with data current.Therefore, luminous corresponding to the pixel E12 to E62 of the second scan line S2.
Utilize said method, luminous corresponding to the pixel E13 to E63 of three scan line S3, then, luminous corresponding to the pixel E14 to E64 of the 4th scan line S4.Subsequently, be unit with scan line S1 to S4, repeat above-mentioned processing procedure luminous on pixel E11 to E64.
Below, by the luminance difference between pixel E11 and the E12, will describe the processing procedure that drives pixel E11 to E64 below in detail.
At first, resistance between each pixel E11 to E64 and the ground is described.
On a cathode layer, in the direction of first end that is connected to the respective cathode line from it to its second end, its width increases, as shown in Figure 3.Therefore, on this cathode layer,, reduce corresponding to the resistance between the part of the pixel relevant, shown in Fig. 5 B with this cathode layer in direction from first end to second end.
For example, the resistance between pixel E11 and the ground is Rs, and the resistance between pixel E21 and the ground is Rs+Rp, and the resistance between pixel E31 and the ground is Rs+1.8Rp.In addition, the resistance between pixel E41 and the ground is Rs+2.4Rp, and the resistance between pixel E51 and the ground is Rs+2.8Rp, and the resistance between pixel E61 and the ground is Rs+3Rp.
In Fig. 5 C, the resistance between pixel E12 and the ground is Rs+3Rp
Brightness with pixel E11 and E61 compares below.
On light-emitting device of the present invention, the resistance between pixel E11 and the ground is Rs, and the resistance between pixel E61 and the ground is Rs+3Rp.
At this, the cathode voltage VC11 of pixel E11 to E61 and VC61 influence the brightness of pixel E11 to E61.In addition, have when onesize at data current I11 to I61, the resistance of the resistor between cathode voltage VC11 and VC61 and each pixel E11 to E61 and the ground is directly proportional.Therefore, when data current I11 to I61 has identical size, utilize the resistance between each pixel E11 to E61 and the ground, the brightness of control pixel E11 to E61.
In these cases, first resistance between pixel E61 and the ground is greater than second resistance between pixel E11 and the ground, therefore, has when onesize at data current I11 to I61, and the brightness of the light that pixel E61 sends is lower than the brightness of the light that pixel E11 sends.
Yet the difference of first resistance and second resistance is 3Rp, and therefore, the difference of first resistance and second resistance is less than the difference (5A) of each resistance of the light-emitting device of describing in background technology.Therefore, the user is not aware of the luminance difference of pixel E11 and E61.Particularly, when the size of light-emitting device increases, that is, when pixel quantity increased, the luminance difference of each pixel in the light-emitting device of the present invention was much smaller than the luminance difference of the light-emitting device of describing in background technology.
Brightness with pixel E11 and E12 compares below.
Resistance between pixel E11 and the ground is Rs, and the resistance between pixel E12 and the ground is Rs+3Rp.Therefore, E11 compares with pixel, and pixel E12 sends the lower light of brightness.Yet the difference of resistance is little, therefore, has when onesize at data current I11 and I12, and the user is not aware of the luminance difference between pixel E11 and the E12.
In a word, on light-emitting device of the present invention, at predetermined direction, the width of each cathode layer 302 is increasing, and therefore, the user is not aware of the luminance difference of pixel E11 to E64.Can utilize experiment to determine the intensity of variation of the width of cathode layer 302.
On light-emitting device in accordance with another embodiment of the present invention, according to the width of position change wall 306.
Fig. 6 A is the plane graph according to the light-emitting device of second embodiment of the invention.Fig. 6 B is the schematic diagram that the Circuits System of light-emitting device shown in Figure 6 is shown.
In Fig. 6 A, light-emitting device of the present invention comprises: anode layer 600, cathode layer 602, pixel 604, wall 606, anode line 608, cathode line 610A and 610B and driver 612.
Because except cathode layer 602, each unit of present embodiment is identical with each unit among first embodiment, so the detailed same unit.
Different with first embodiment, at predetermined direction, the width of cathode layer 602 is that unit increases with the individual anode layer of N (integers more than or equal to 2).For example, the width of cathode layer 602 is that unit increases with 2 anode layers, as shown in Figure 6A.Therefore, this light-emitting device has resistance, shown in Fig. 6 B.
In Fig. 6 B, second resistance ratio pixel E11 between pixel E61 and the ground and the big 3Rp of first resistance between the ground.
In addition, the big 3Rp of the 3rd resistance ratio first resistance between pixel E12 and the ground.
Therefore, have equally when big or small at data current I11, I61 and I12, the user is not aware of the luminance difference of pixel E11, E61 and E12.In other words, the user is not aware of pixel E11, E61 with maximum difference in luminance and the luminance difference of E12, and therefore, the user is not aware of the luminance difference between other pixels.
In a word, on light-emitting device of the present invention, the width of cathode layer 602 increases with a certain unit, so that the user is not aware of the luminance difference of pixel E11 to E64.
Fig. 7 A is the schematic diagram that illustrates according to the light-emitting device of third embodiment of the invention.Fig. 7 B is the schematic diagram that the Circuits System of light-emitting device shown in Fig. 7 A is shown.
On Fig. 7 A, light-emitting device of the present invention comprises: anode layer 700, cathode layer 702, pixel 704, wall 706, anode line 708, cathode line 710A and 710B and driver 612.
Because except cathode layer 702, each unit of present embodiment is identical with each unit among first embodiment, so the detailed same unit.
On each cathode layer 702, the width of its end is little, but the width of other parts is greater than the width of end.Therefore, light-emitting device has resistance, shown in Fig. 7 B.
On Fig. 7 B, first resistance ratio pixel E61 between pixel E11 and the ground and the little 3Rp of second resistance between the ground.In addition, the big 3Rp of the 3rd resistance ratio first resistance between pixel E12 and the ground.Therefore, if data current I11, I61 have identical size with I12, then the user is not aware of the luminance difference of pixel E11, E61 and E12.
In a word, different with first and second embodiment, on the light-emitting device of the 3rd embodiment, the width of cathode layer does not increase with a certain unit, but the center of this cathode layer is wideer than the end, therefore, has reduced the resistance difference corresponding to pixel E11 to E64.Therefore, the user is not aware of the luminance difference of pixel E11 to E64.
From first to the 3rd embodiment as can be seen, light-emitting device of the present invention changes the width of cathode layer 302,602 and 702, to reduce the luminance difference of pixel E11 to E64.Cathode layer 302,602 and 702 preferably has other parts wideer than its end respectively.In other words, on a cathode layer, according to same area, at least corresponding to a resistance of other parts outside the end less than resistance corresponding to the end.
In addition, in first to the 3rd embodiment, wall 306,606 and 706 has constant width.Yet, if wall 306,606 with 706 only the electricity separate cathode layer 302,602 and 702, can change the width of wall 306,606 and 706.
Fig. 8 is the plane graph that illustrates according to the light-emitting device of fourth embodiment of the invention.Fig. 9 A is the schematic diagram that illustrates according to the Circuits System of one embodiment of the invention light-emitting device shown in Figure 8.Fig. 9 B illustrates to be used to drive the schematic diagram of the processing procedure of light-emitting device according to an embodiment of the invention.
In Fig. 8, light-emitting device of the present invention comprises: anode layer 800, cathode layer 802, pixel 804, wall 806, anode line 808, cathode line 810 and driver 812.
Because except cathode layer 802, wall 806 and cathode line 810, each unit of present embodiment is identical with each unit among first embodiment, so the detailed same unit.
In a direction, the cathode line 810 different with 310B with cathode line 310A among first embodiment are connected to cathode layer 802.
In the direction from the first end that is connected to the respective cathode line to the second end, the width of a cathode layer increases, and therefore, light-emitting device has resistance, shown in Fig. 9 B.
Describe the structure of the light-emitting device of the 4th embodiment below in detail.
In Fig. 9 A, light-emitting device of the present invention comprises pixel E11 to E64 and driver 812.
Because except scan drive circuit 902, each unit of present embodiment is identical with each unit among first embodiment, so the detailed same unit.
In a direction, scan drive circuit 902 is connected to scan line S1 to S4, and sweep signal is delivered to scan line S1 to S4.
Figure 10 A is the plane graph that illustrates according to the light-emitting device of fifth embodiment of the invention.Figure 10 B is the schematic diagram that the Circuits System of light-emitting device shown in Figure 10 A is shown.
In Figure 10 A, light-emitting device of the present invention comprises: anode layer 1000, cathode layer 1002, pixel 1004, wall 1006, anode line 1008, cathode line 1010 and driver 1012.
Because except cathode layer 1002, each unit of present embodiment is identical with each unit among the 4th embodiment, so the detailed same unit.
On the cathode layer of this embodiment different with the cathode layer 802 among the 4th embodiment, in the direction from first end that is connected to the respective cathode line to second end, its width is that unit increases with the individual anode layer of N (integers more than or equal to 2).For example, the width of cathode layer 1002 is that unit increases with two anode layers shown in Figure 10 A.Therefore, this light-emitting device has resistance, shown in Figure 10 B.
Figure 11 A is the plane graph that illustrates according to the light-emitting device of sixth embodiment of the invention.Figure 11 B is the schematic diagram that the Circuits System of light-emitting device shown in Figure 11 A is shown.
On Figure 11 A, light-emitting device of the present invention comprises: anode layer 1100, cathode layer 1102, pixel 1104, wall 1106, anode line 1108, cathode line 1110 and driver 1112.
Because except cathode layer 1102, each unit of present embodiment is identical with each unit among the 4th embodiment, so the detailed same unit.
On each cathode layer 1102, the width of its end is little, but the width of other parts outside the end is greater than the width of end.Therefore, this light-emitting device has resistance, shown in Figure 11 B.
Note that according to a preferred embodiment of the invention based on the content of telling about above, those skilled in the art can carry out various modifications and changes.Therefore, should be understood that in the essential scope of the present invention that claims limit, can change specific embodiment of the present invention.
Claims (20)
1. light-emitting device comprises:
Anode layer is arranged on the first direction;
Cathode layer is arranged on the second direction that is different from first direction;
A plurality of pixels are formed on the zone of intersection of anode layer and cathode layer; And
Cathode line is connected to cathode layer,
Wherein on a cathode layer, at least corresponding near corresponding to a resistance between the each several part of each pixel outside first pixel of the cathode line of cathode layer less than corresponding to the part of first pixel and corresponding near the resistance between the part of the pixel of first pixel.
2. light-emitting device according to claim 1, wherein the part cathode layer is than wide corresponding to the zone of intersection of the cathode layer of first pixel and anode layer.
3. light-emitting device according to claim 1, wherein from being connected to corresponding to first end of the cathode line of the cathode layer direction to second end, the width of at least one cathode layer increases.
4. light-emitting device according to claim 3, wherein in the direction from first end to second end, the width of cathode layer is that unit increases with the individual anode layer of N (integers more than or equal to 2).
5. light-emitting device according to claim 1 further comprises:
Wall is arranged between the cathode layer, separates cathode layer with electricity.
6. light-emitting device according to claim 5 wherein changes the width of a wall at least.
7. light-emitting device according to claim 5, wherein on its whole zone, the width of each wall is constant.
8. light-emitting device according to claim 1, wherein cathode line comprises:
First cathode line is connected to some cathode layer; And
Second cathode line is connected to other cathode layers.
9. light-emitting device according to claim 1 further comprises:
Anode line is connected to anode layer;
Scan drive circuit is configured, and with by cathode line, sweep signal is sent to cathode layer; And
Data drive circuit is configured, and with by anode line and anode layer, data current is delivered to each pixel.
10. light-emitting device according to claim 1 further comprises:
Anode line is connected to anode layer;
First scan drive circuit is configured, and with by the cathode line corresponding to some cathode layer, first sweep signal is sent to some cathode layer;
Second scan drive circuit is configured, and with by other cathode line, second sweep signal is sent to other cathode layers; And
Data drive circuit is configured, and with by anode line and anode layer, data current is delivered to each pixel.
11. light-emitting device according to claim 1, wherein this light-emitting device is an organic electroluminescence device.
12. a light-emitting device comprises:
Anode layer is arranged on the first direction;
Cathode layer is arranged on the second direction that is different from first direction;
A plurality of pixels are formed on second zone of intersection of first zone of intersection of a anode layer in each anode layer and a cathode layer and other anode layers and this cathode layer,
Wherein one of at least the second zone of intersection is wideer than first zone of intersection.
13. light-emitting device according to claim 12 further comprises:
Cathode line is connected to each cathode layer,
Wherein the position of first zone of intersection is near the cathode line that is connected to this cathode layer.
14. light-emitting device according to claim 13, wherein second zone of intersection has continuous width, and has minimum widith in second zone of intersection near second zone of intersection of this first zone of intersection in second zone of intersection.
15. light-emitting device according to claim 12, one or more pixel comprises the luminescent layer that is made of organic material.
16. light-emitting device according to claim 12 further comprises:
Wall is arranged between each cathode layer, is used for electricity and separates each cathode layer.
17. light-emitting device according to claim 16 wherein changes the width of one of each wall at least.
18. light-emitting device according to claim 16, each wall all has constant width.
19. light-emitting device according to claim 12 further comprises:
Anode line is connected to anode layer;
Scan drive circuit is configured, and with by cathode line, sweep signal is sent to cathode layer; And
Data drive circuit is configured, and with by anode line and anode layer, data current is delivered to each pixel.
20. light-emitting device according to claim 12 further comprises:
Anode line is connected to anode layer;
First scan drive circuit is configured, and with by the cathode line corresponding to some cathode layer, first sweep signal is sent to some cathode layer;
Second scan drive circuit is configured, and with by the cathode line corresponding to other cathode layers, second sweep signal is sent to other cathode layers; And
Data drive circuit is configured, and with by anode line and anode layer, data current is delivered to each pixel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050097043 | 2005-10-14 | ||
| KR20050097043 | 2005-10-14 | ||
| KR1020050097254 | 2005-10-15 |
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| CN1949531A true CN1949531A (en) | 2007-04-18 |
| CN100505294C CN100505294C (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101007361A Active CN100505294C (en) | 2005-10-14 | 2006-07-04 | Light emitting device |
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| KR (1) | KR100784547B1 (en) |
| CN (1) | CN100505294C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157542A (en) * | 2010-12-17 | 2011-08-17 | 四川虹视显示技术有限公司 | PMOLED scanning electrode wiring structure |
| CN107111987A (en) * | 2014-10-22 | 2017-08-29 | 欧库勒斯虚拟现实有限责任公司 | The sub-pixel of display with controllable visual angle |
| CN108520889A (en) * | 2018-04-10 | 2018-09-11 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and its display device |
| CN109728029A (en) * | 2017-10-31 | 2019-05-07 | 云谷（固安）科技有限公司 | Display panel and terminal |
| CN110224079A (en) * | 2019-06-14 | 2019-09-10 | 京东方科技集团股份有限公司 | Display base plate, production method and display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100773939B1 (en) * | 2005-02-16 | 2007-11-07 | 주식회사 대우일렉트로닉스 | Organic electro luminescent display device |
-
2006
- 2006-05-26 KR KR1020060047561A patent/KR100784547B1/en active IP Right Grant
- 2006-07-04 CN CNB2006101007361A patent/CN100505294C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157542A (en) * | 2010-12-17 | 2011-08-17 | 四川虹视显示技术有限公司 | PMOLED scanning electrode wiring structure |
| CN107111987A (en) * | 2014-10-22 | 2017-08-29 | 欧库勒斯虚拟现实有限责任公司 | The sub-pixel of display with controllable visual angle |
| US10937361B2 (en) | 2014-10-22 | 2021-03-02 | Facebook Technologies, Llc | Sub-pixel for a display with controllable viewing angle |
| US11341903B2 (en) | 2014-10-22 | 2022-05-24 | Facebook Technologies, Llc | Sub-pixel for a display with controllable viewing angle |
| CN109728029A (en) * | 2017-10-31 | 2019-05-07 | 云谷（固安）科技有限公司 | Display panel and terminal |
| CN108520889A (en) * | 2018-04-10 | 2018-09-11 | 上海天马有机发光显示技术有限公司 | Organic light emitting display panel and its display device |
| CN110224079A (en) * | 2019-06-14 | 2019-09-10 | 京东方科技集团股份有限公司 | Display base plate, production method and display device |
| CN110224079B (en) * | 2019-06-14 | 2022-06-14 | 京东方科技集团股份有限公司 | Display substrate, manufacturing method and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100505294C (en) | 2009-06-24 |
| KR100784547B1 (en) | 2007-12-11 |
| KR20070041302A (en) | 2007-04-18 |
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