TWI585965B - Bulk detection of organic light emitting diode displays - Google Patents

Description

Organic light-emitting diode display capable of batch detection

The invention relates to an organic light emitting diode display, in particular to an organic light emitting diode display capable of batch detection.

The display made of the organic light-emitting diode has become the mainstream of the new generation of display devices due to its self-illumination, wide viewing angle, simple process, low cost, fast response speed, high color saturation, and power saving. .

The organic light-emitting diode display must undergo multiple tests during the manufacturing process, such as electrical, optical, aging, and electrostatic discharge testing. For the aging test, the organic light-emitting diode in each display unit. Performing energization for a period of time to observe the stability and uniformity of the organic light-emitting diode, thereby removing the defective product, and further, in order to enable the integrated circuit for operating the display unit to be directly mounted on the glass, To save the cost of additional package of integrated circuit chips, the organic light emitting diode display is assembled by means of chip on glass (COG). However, this assembly method is generally used for tape and roll wafer carrier packaging. (Tape Carrier Package, TCP) or chip on film (COF) for the lead aging test, which is affected by the installation position of the integrated circuit chip, so that the organic light emitting diode The display cannot perform the burn-in test on the display unit in batches before setting the integrated circuit chip, thereby increasing the difficulty of the test.

In view of this, in the Chinese Patent Publication No. 200710028501, a wiring method for an inspection line of an organic electroluminescence display is proposed, which mainly comprises a non-loading of an anode inspection line from an anode. The integrated circuit terminal is connected, and the integrated circuit is avoided, and the anode inspection line and the cathode inspection line are connected to the main inspection line to achieve the effect of batch detection.

However, in the above manner, since the anode inspection line must be connected from the non-assembled integrated line end of the anode and then connected to the main inspection line, the periphery of the organic electroluminescent display can no longer be disposed around the organic electroluminescent display. The electrostatic protection circuit makes the organic electroluminescent display susceptible to external noise interference, so there is a need for improvement.

The main object of the present invention is to solve the problem that the conventional organic light emitting diode display cannot be detected in batches, for example, electrical, optical, aging test, etc., and another object of the present invention is to solve the conventional organic light emitting diode. The body monitor cannot set the problem of electrostatic protection lines.

In order to achieve the above object, the present invention provides an organic light emitting diode display capable of batch detection, comprising a plurality of substrates forming an array arrangement, an organic light emitting diode respectively disposed on the substrate, a plurality of anode lines, and a plurality of strips A cathode line, an anode lead and a cathode lead, and a cathode power supply pad. The substrate each includes a display area, an integrated circuit preset area, and a surrounding area. The integrated circuit preset area is adjacent to the display area, and the surrounding area surrounds the display area and the integrated circuit preset area. The organic light emitting diode, the anode line and the cathode line are respectively disposed in the display area, and the anode line and the cathode line are electrically connected to the organic light emitting diode and extend to the preset area of the integrated circuit and each The connection is turned on to form an anode shorted end and a cathode shorted end. The anode lead and the cathode lead are respectively disposed in the surrounding area, the anode lead extends to a predetermined area of the integrated circuit and is connected to the anode short-circuit end, and the cathode lead extends into the preset area of the integrated circuit and The cathode shorting end is connected and has an electrostatic shielding section surrounding the display area and a cathode guiding section connected to the electrostatic shielding section and extending to a side edge of the substrate. The cathode power supply pad is electrically connected to the cathode guiding section.

The anode leads adjacent to the substrate are electrically connected to each other, and the cathode leads adjacent to the substrate are electrically connected to each other.

As a result, with the above technical solution, the present invention has at least the following advantages:

1. The anode line and the cathode line are formed in the predetermined area of the integrated circuit to form the anode short-circuiting end and the cathode short-circuiting end, and then connected to the anode lead and the cathode lead to form a wiring that can be batch-detected.

2. After the detection, the anode short-circuiting end can be directly disconnected from the anode line, the cathode short-circuiting end is disconnected from the cathode line, and a predetermined connection area of the integrated circuit is directly disposed to be electrically connected to the anode line and the cathode line. Integrated circuit chip.

3. The electrostatic shielding section surrounds the display area, and provides an electrostatic protection of the organic light emitting diode to prevent interference of external noise.

10‧‧‧Substrate

11‧‧‧Top edge

12‧‧‧ bottom edge

13‧‧‧lateral edge

20‧‧‧Display area

21‧‧‧Organic Luminescent Diodes

22‧‧‧Anode line

221‧‧‧Anode short-circuit end

23‧‧‧ Cathode line

231‧‧‧Cathode short-circuit end

30‧‧‧Integrated circuit preset area

31‧‧‧Integrated circuit chip

40‧‧‧ surrounding area

41‧‧‧Anode lead

411‧‧‧Anode junction

42‧‧‧Cathode lead

421‧‧‧cathode junction

422‧‧‧Electrostatic shield

423‧‧‧Soft board connection

10a‧‧‧First substrate

11a‧‧‧First top edge

12a‧‧‧first bottom edge

13a‧‧‧First side edge

20a‧‧‧First display area

21a‧‧‧First Organic Light Emitting Diode

22a‧‧‧First anode line

221a‧‧‧First anode short circuit

23a‧‧‧First cathode line

231a‧‧‧First cathode short-circuit end

30a‧‧‧First integrated circuit preset area

40a‧‧‧First surrounding area

41a‧‧‧First anode lead

411a‧‧‧First anode lead section

42a‧‧‧First cathode lead

421a‧‧‧First Cathode Guide Section

422a‧‧‧First electrostatic shield

423a‧‧‧First soft board connection

10b‧‧‧second substrate

11b‧‧‧second top edge

12b‧‧‧second bottom edge

13b‧‧‧second side

20b‧‧‧Second display area

21b‧‧‧Second organic light-emitting diode

22b‧‧‧Second anode line

221b‧‧‧Second anode short circuit

23b‧‧‧Second cathode line

231b‧‧‧second cathode short-circuit end

30b‧‧‧Second integrated circuit preset area

40b‧‧‧Second surrounding area

41b‧‧‧Second anode lead

411b‧‧‧Second anode lead section

42b‧‧‧Second cathode lead

421b‧‧‧Second cathode lead section

422b‧‧‧Second electrostatic shield

423b‧‧‧Second board connection

FIG. 1 is a schematic view of a wiring according to an embodiment of the present invention.

2 is a schematic view showing the connection of an anode lead and a cathode lead according to an embodiment of the present invention.

3 is a schematic diagram of connection to an integrated circuit wafer after aging detection according to an embodiment of the invention.

The detailed description and the technical content of the present invention will now be described with reference to the following drawings: Please refer to FIG. 1 for a schematic diagram of a wiring according to an embodiment of the present invention. As shown in the figure, the present invention is capable of batch detection. The organic light emitting diode display comprises a plurality of substrates 10 arranged in an array, an organic light emitting diode 21 respectively disposed on the substrate 10, a plurality of anode lines 22, a plurality of cathode lines 23, an anode lead 41 and a Cathode lead 42. The substrate 10 is here The glass is fabricated and includes a display area 20, an integrated circuit preset area 30, and a surrounding area 40. The integrated circuit preset area 30 is vertically adjacent to the display area 20, and the surrounding area 40 surrounds The display area 20 and the periphery of the integrated circuit preset area 30.

The display region 20 is provided with the organic light emitting diode 21, the anode line 22 and the cathode line 23. The organic light emitting diode 21 is formed by arranging a plurality of organic light emitting diode arrays, and the anode line 22 and the cathode line Each of the OLEDs 21 is electrically connected to the organic light-emitting diodes 21 and extends into the predetermined area 30 of the integrated circuit to be electrically connected to each other to form an anode short-circuiting end 221 and a cathode short-circuiting end 231, respectively. In this embodiment, the anode line 22 is connected to a bottom edge of the organic light emitting diode 21 adjacent to the predetermined region 30 of the integrated circuit, and the anode line 22 is from the bottom edge of the organic light emitting diode 21 And extending to a top side of the organic light-emitting diode 21 in the predetermined area 30 of the integrated circuit, and then connecting to each other to form the anode short-circuiting end 221; and the cathode line 23 is connected to the organic light-emitting diode 21 and the The left and right sides of the bottom side are respectively extended by the two side edges of the organic light emitting diode 21 toward the integrated circuit preset area 30 until the two adjacent portions of the integrated circuit preset area 30 are adjacent to each other. The adjacent side sides of the top side are connected to each other to form a cathode short-circuiting end 231.

The surrounding area 40 is disposed around the substrate 10. The surrounding area 40 can be divided into an upper section, a lower section, a left section and a right section. The peripheral area 40 is provided with the anode lead 41 and The cathode lead 42 is located in the lower section and extends from the lower section into the integrated circuit preset area 30 to be connected to the anode short-circuit end 221; the cathode lead 42 has an edge The left section, the upper section and the right section surround the electrostatic shielding section 422 of the display area 20, and extend from the lower section to the integrated circuit preset area 30 to be connected to the cathode short-circuiting end 231.

Please refer to FIG. 2 for a connection diagram of an anode lead and a cathode lead according to an embodiment of the present invention. Here, a plurality of the substrate 10 are defined as a first substrate 10a and a second substrate 10b to illustrate The anode lead 41 and the cathode lead 42 are connected between the substrates 10 The system, but not limited thereto, is only applicable to the connection between the two substrates 10. It should be noted that the substrate 10 includes a top edge 11 , a bottom edge 12 opposite to the top edge 11 , and two side edges 13 opposite to the top edge 11 or the bottom edge 12 , according to which Corresponding to the first substrate 10a and the second substrate 10b, the first substrate 10a includes a first top edge 11a, a first bottom edge 12a, and two opposite first side edges 13a. The second substrate 10b includes a second top edge 11b, a second bottom edge 12b, and two opposite second side edges 13b, and so on, for example, the anode lead 41 of the substrate 10 is referred to as the first substrate 10a. It is a first anode lead 41a, and the second substrate 10b is referred to as a second anode lead 41b. The other elements are also the same, and will not be described again.

The second substrate 10b is disposed adjacent to the first substrate 10a, and is located near the first bottom edge 12a. The first anode lead 41a of the first substrate 10a is first by a first surrounding area 40a. The lower section extends through the first bottom edge 12a and the second top edge 11b toward the second substrate 10b, to a second upper section of a second surrounding area 40b, and in the second upper section, Connected to the two second side edges 13b of the second substrate 10b, respectively, each forming a first anode guiding portion 411a. A first cathode lead 42a of the first substrate 10a is connected to the two first side edges 13a of the first substrate 10a in a first upper section, and each forms a first cathode guiding section 421a. . As such, when the other substrate is adjacent to the left and right sides of the second substrate 10b, the first anode guiding portion 411a on the second substrate 10b is electrically connected to an anode guiding portion on the substrate, and the second The second cathode guiding portion 421b on the substrate 10b is electrically connected to a cathode guiding portion on the substrate, according to which the plurality of laterally side-by-side substrates 10 have the anode lead 41 and the cathode lead The OLEDs can be electrically connected to each other to achieve a batch-detectable wiring, and the OLED display only needs to be provided with an anode power supply pad to be electrically connected to the anode guiding portion 411 of one of the substrates 10, and A cathode power supply pad is electrically connected to the cathode guiding portion 421 of the substrate 10 to perform batch testing, and the detecting may be electrical testing, aging testing, optical testing, and electrostatic discharge testing.

Please refer to FIG. 3, which is a schematic diagram of a method for connecting to an integrated circuit wafer after aging detection according to an embodiment of the present invention. It is to be noted that the present invention can directly perform the anode after performing an aging test. The short-circuited end 221 and the anode line 22 are separated by a laser to form an open circuit between the anode lines 22. Similarly, the cathode short-circuiting end 231 is disconnected from the cathode line 23, so that the cathode lines 23 are formed. In an open circuit, an integrated circuit chip 31 is electrically connected to the anode line 22 and the cathode line 23, and the anode short-circuiting end 221 and the cathode short-circuiting end 231 are left in the integrated circuit. The predetermined area 30 does not affect the connection of the integrated circuit wafer 31 to the anode line 22 and the cathode line 23. Further, the cathode lead 42 further has a flexible board connecting end 423 extending toward the bottom edge 12. After the integrated circuit chip 31 is connected, the cathode lead 42 can be grounded to a soft board by the flexible board connecting end 423, so that the electrostatic shielding section 422 generates an electrostatic shielding effect.

In summary, the present invention utilizes the anode line and the cathode line to form the anode short-circuiting end and the cathode short-circuiting end in a predetermined area of the integrated circuit, and then is connected to the anode lead and the cathode lead. The anode guiding section and the cathode guiding section form a wiring capable of being batch-detected. Further, after the aging detection, the anode of the anode can be directly disconnected from the anode line, and the cathode short-circuiting end is disconnected from the cathode line. An integrated circuit chip electrically connected to the anode line and the cathode line may be directly disposed in the predetermined area of the integrated circuit without affecting the connection of the integrated circuit wafer. Finally, the present invention also utilizes the electrostatic shielding section to surround The display area provides an electrostatic protection of the organic light-emitting diode to prevent interference from external noise. Therefore, the present invention is highly progressive and meets the requirements of applying for an invention patent, and the application is made according to law, and the prayer bureau gives an early patent. Real sense of virtue.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the present application should remain within the scope of the patent of the present invention.

10‧‧‧Substrate

11‧‧‧Top edge

12‧‧‧ bottom edge

13‧‧‧lateral edge

20‧‧‧Display area

21‧‧‧Organic Luminescent Diodes

22‧‧‧Anode line

221‧‧‧Anode short-circuit end

23‧‧‧ Cathode line

231‧‧‧Cathode short-circuit end

30‧‧‧Integrated circuit preset area

40‧‧‧ surrounding area

41‧‧‧Anode lead

411‧‧‧Anode junction

42‧‧‧Cathode lead

421‧‧‧cathode junction

422‧‧‧Electrostatic shield

423‧‧‧Soft board connection

Claims (5)

An organic light emitting diode display capable of batch detection comprises: a plurality of substrates arranged in an array, the substrates each comprising a display area, an integrated circuit preset area adjacent to the display area, and a display surrounding the display a region and a surrounding region of the predetermined region of the integrated circuit; an organic light emitting diode, a plurality of anode lines and a plurality of cathode lines respectively disposed in the display region, the anode line and the cathode line and the organic light emitting diode Electrically connecting and extending into the predetermined area of the integrated circuit and connecting the respective contacts to form an anode short-circuiting end and a cathode short-circuiting end; an anode lead and a cathode lead respectively disposed in the surrounding area, the anode lead extending to the anode lead The predetermined portion of the integrated circuit is connected to the short-circuiting end of the anode, and the cathode lead extends to the predetermined portion of the integrated circuit and is connected to the short-circuiting end of the cathode and has an electrostatic shielding section surrounding the display area and a static electricity a shield guiding section connected to the cathode guiding section of one side edge of the substrate; and a cathode power supply pad electrically connected to the cathode guiding section; In which the substrate adjacent to the anode lead electrically connected to each other, adjacent to the cathode lead of the substrate are electrically connected. The batch-detectable organic light-emitting diode display of claim 1, wherein the substrate has a bottom edge, and the cathode lead has a flexible board connection end extending toward the bottom edge. The batch-detectable OLED display of claim 1, wherein the substrate comprises a first substrate and a second substrate, the first substrate having a first bottom edge, the second substrate Having a second top edge adjacent to the first bottom edge, the first substrate has a first surrounding area and a first anode lead disposed in the first surrounding area, the second substrate having a second surrounding area The first anode lead extends from the first peripheral region and the second top edge to the second surrounding region. The batch-detectable organic light-emitting diode display of claim 3, wherein the second substrate has a second side edge, the first anode lead is on the second surrounding area and the second side edge The connection forms a first anode lead segment. The batch-detectable organic light-emitting diode display of claim 4, further comprising an anode power supply pad electrically connected to the first anode lead-strip.