CN2862333Y

CN2862333Y - Contact conductor for organic electroluminescent element without power source

Info

Publication number: CN2862333Y
Application number: CN 200520047933
Authority: CN
Inventors: 徐进; 吴玉琦; 余峰
Original assignee: GUANGDIAN ELECTRONIC CO Ltd SHANGHAI
Current assignee: INESA Electron Co., Ltd.
Priority date: 2005-12-23
Filing date: 2005-12-23
Publication date: 2007-01-24
Anticipated expiration: 2015-12-23

Abstract

The utility model discloses an electrode lead for passive matrix organic electroluminescent device (OLED), belonging to the technical field of electronic display device. The electrode lead includes anode lead and cathode lead, wherein the cathode lead is perpendicular with horizontal line and meets the specification and binding requirements of chip; the electrode lead is prepared from stable silver alloy material with low resistance so as to effectively minimize the resistance of the lead; and the passive matrix OLED is above 3 inches. The electrode lead in the utility model effectively has reasonable structure, reduces the resistance of the lead without increase of cost and manufacturing difficulties, and improves the illuminating brightness of passive matrix OLED above 3 inches, so that the manufacturer can manufacture passive matrix OLED with stable quality, good performance and low cost.

Description

The contact conductor of passive organic electroluminescent device

Technical field

The utility model relates to the technical field of electron display device, particularly relates to the technology of the contact conductor of passive organic electroluminescent display device more than 3 inches.

Background technology

Present organic electroluminescence device generally is by last, following two electrodes are formed with the organic material film with semiconductor property that is clipped in its centre, organic layer film wherein can be by thermal evaporation, spin coating or the preparation of other film build methods, and anode wherein is the oxidation Indium tin ITO of electrically conducting transparent.When the two ends at device add forward dc voltage, the injection by electronics and holoe carrier and compound and luminous.Organic elctroluminescent device is a kind of plate array device, need being engraved on the substrate with certain size and shape anode and cathode insulated column patterning.In addition as shown in Figure 1, in order better to increase the switching performance of organic luminescent device and drive IC module, tend on the glass substrate 1 that is coated with ITO transparent conductive film 2 the better metal level 3 of sputter last layer electric conductivity so that formation is coated with the contact conductor of metal.The display mode of OLED circuit has two kinds: active matrix and passive matrix drive.The basic process of the scanning theory that passive matrix drives as shown in Figure 2, need the respective column of luminous pixel all to add positive voltage to certain delegation, the respective column that does not need luminous pixel is ground connection all, and then this row needs the luminous pixel can both be luminous and other pixel is not luminous when this column electrode ground connection.So line by line scan, just can obtain the image of required demonstration.But simple array drive on the large scale of the high-resolution of ORGANIC ELECTROLUMINESCENCE DISPLAYS and display screen, all have certain degree limitation.And along with the increase of passive matrix OLED screen size, the increase of line number, the mean flow rate of screen also can reduce (because: mean flow rate=peak brightness * duty ratio).Though the passive matrix ORGANIC ELECTROLUMINESCENCE DISPLAYS has its limitation, but the type of drive of active matrix is simple in structure relatively, cost is lower, be applicable to the display device (for example character demonstration) of low-power consumption, the small screen (below 5 inches) fully, so the superiority that the passive matrix ORGANIC ELECTROLUMINESCENCE DISPLAYS has it to replace.At present, how to produce steady quality, function admirable, the numerous just OLED of the passive matrix OLED displays of lower-cost large-size display manufacturer presses for the problem of solution.

Generally speaking, for the screen as much as possible of on glass substrate, arranging, tend to the area that compression electrodes lead-in wire as far as possible takies, referring to Fig. 3, Fig. 4, the cabling mode of design cathode leg to be being acute angle L between horizontal line and the cathode leg 5, easily like this causes bigger lead resistance.Along with the increase of the size and the resolution of passive OLED display screen, lead resistance also can increase.When lead resistance is excessive, can make circuit increase a unnecessary voltage drop, thereby make the in-fighting of entire circuit increase and influence the performance of circuit.For the OLED device of the high-resolution passive drive of large scale lead resistance too conference reduce the mean flow rate of screen greatly.4 is anode tap in Fig. 3.

The utility model content

At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides and a kind ofly can reduce lead resistance, effectively improves the contact conductor of passive organic electroluminescent device of the luminosity of the passive OLED device more than 3 inches.

In order to solve the problems of the technologies described above, the contact conductor of a kind of passive organic electroluminescent device provided by the utility model comprises anode tap and cathode leg, it is characterized in that, rectangular between described cathode leg and the horizontal line, and meet the specification of chip and the requirement of binding.

Described contact conductor is selected for use stable and the side hinders the material of low silver alloy as contact conductor; Thereby reduced lead resistance limitedly.

Described passive organic electroluminescent device is a passive organic electroluminescent display device more than 3 inches.

Utilize the contact conductor of the passive organic electroluminescent device that the utility model provides, because the structure of the contact conductor of the organic light emitting display that employing the utility model provides, by the low contact conductor material silver alloy of the side of selecting for use resistance from effectively reducing lead resistance in essence, and can be so that the line width values of cathode leg enlarges on the basis that meets the chip specification as much as possible by the negative electrode Wiring structure at right angle.Computing formula R=R according to lead resistance L/W (R : side's resistance, L: wire length, W: wire widths), when the live width of lead-in wire has increase slightly, can calculate lead resistance and greatly reduce, when the resistance of the side of lead material itself also can effectively reduce lead resistance when reducing.The Rational structure that hence one can see that by the utility model contact conductor, cost can not increased, do not increase the luminosity that effectively improves the passive OLED device more than 3 inches on the basis of manufacture difficulty, help manufacturer production and go out steady quality, function admirable, lower-cost large-sized passive matrix OLED display screen.

Description of drawings

Fig. 1 is the transparent anode of organic luminescent device substrate and the structural representation of contact conductor;

Fig. 2 is the utility model embodiment passive OLED matrix displaying principle drive principle figure;

Fig. 3 is the structural representation of the contact conductor of passive OLED display device in the prior art;

Fig. 4 is that the A of Fig. 3 embodiment in the prior art is to the structure for amplifying schematic diagram;

Fig. 5 is the structural representation of the contact conductor of passive OLED display device among the utility model embodiment;

Fig. 6 be among the utility model Fig. 5 embodiment B to the structure for amplifying schematic diagram.

Embodiment

Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection range of the present utility model in.

Referring to Fig. 5, shown in Figure 6, the contact conductor of the passive matrix organic electroluminescence device that a kind of 4.2 inches resolution that the utility model embodiment is provided are 128*160, comprise anode tap 4 and cathode leg 15, it is characterized in that, rectangular L1 between described cathode leg 15 and the horizontal line, and meeting the specification of chip and the requirement of binding, described contact conductor is selected for use stable and the side hinders the material of low silver alloy as contact conductor; Thereby reduced lead resistance limitedly.

Claims

1, a kind of contact conductor of passive organic electroluminescent device comprises anode tap and cathode leg, it is characterized in that, and is rectangular between described cathode leg and the horizontal line, and meets the specification of chip and the requirement of binding.

2, the contact conductor of passive organic electroluminescent device according to claim 1 is characterized in that, described contact conductor is a silver alloy.

3, the contact conductor of passive organic electroluminescent device according to claim 1 is characterized in that, described passive organic electroluminescent device is a passive organic electroluminescent display device more than 3 inches.