TW583892B - Testing structure of OLED panel and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a testing structure of OLED (organic light-emitting display) panel and manufacturing method thereof. The testing structure is provided to adjust and test the OLED panel when the OLED panel is manufactured. The OLED panel comprises plural data lines, the data lines comprise plural red data lines, green data lines, and blue data lines alternatively arranged on a substrate. The testing structure is electrically connected to the red data lines, green data lines, and blue data lines through a red aging line, a green aging line, and a blue aging line respectively. The OLED panel is tested by conducting currents with a predetermined magnitude through them the aging lines respectively.

Description

583892 V. Description of the invention (1) Technical field of the invention: The present invention relates to a detection structure used in an organic light emitting diode display panel and a method for manufacturing the detection structure. Prior technology: In the field of flat panel displays, organic light emitting diodes (OLEDs) can reduce backlight due to the small investment in manufacturing equipment, simpler processes, and because the panel can emit light by itself. Components, and can reduce the necessary thickness of the display panel. In addition, in terms of display performance, it also has the advantages of high brightness (over 10,000 candelas per square meter), short response time (less than 1 microsecond), wide viewing angle, and high contrast value. Therefore, the organic light emitting diode display has become a flat display with considerable potential in the future. The main structure of the organic light emitting diode display is the organic light emitting diode display panel 2. For the structure of the organic light emitting diode display panel 2, please refer to FIG. 1. FIG. 1 is a schematic diagram of the organic light emitting diode display panel of the conventional art. . The organic light emitting diode display panel 2 includes a plurality of signal wires (data 1 i n e) and a plurality of scan wires 12 (s c a η 1 i n e). The signal wires are respectively connected to a plurality of data driving circuits 14 provided on a substrate 4, and the plurality of scanning wires 12 (s c a η 1 i n e) are respectively connected to a plurality of scanning driving circuits 16 provided on a substrate 4. A plurality of signal wires and a plurality of scanning wires

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It is possible to control and cause a plurality of pixel electrodes (not shown) on the substrate 4 and a plurality of common lines (not shown) on the other substrate to form a conducting current in a light emitting layer 18, and the light emitting layer 1 8 includes a plurality of red, green, and blue light-emitting substances 20, 2, 2, 24. These signal conductors include a plurality of red, green, and blue signal conductors 6, 8, and 10. The signal conductors 6, 8, and 10 are alternately and parallel (or approximately parallel) arranged in the order of red, green, and blue. On the substrate 4 'and corresponding to a plurality of red, green, and blue light-emitting substances 20, 2, 2, 2 4 vertically, respectively, and displaying a plurality of phases on the organic light-emitting diode display panel 2 by passing current, respectively. Corresponding red image, green image and blue image. The organic light-emitting diode display panel 2 emits light through the light-emitting layer 18, and the light-emitting layer 18 encounters a plurality of holes and a plurality of electrons by a current to generate a recombination phenomenon (rec ombinati ο η), and this recombination The energy released by the phenomenon will excite the light-emitting substances in the light-emitting layer 18, and the light-emitting substances include the red, green, and blue light-emitting substances 20, 2, 2, and 4, and a plurality of red, green, and blue The light-emitting substances 2 0, 2 2, 2 4 are long, corresponding to the signal wires, and are arranged in the order of red, green, and blue alternately and in parallel (or approximately parallel) in the organic light-emitting diode display panel 2 .

After the organic light emitting diode display is completed, it must go through aging, burn-in, and defect detection procedures, and reconcile and detect the organic light emitting diode display panel 2. Because red, green, and blue luminescent substances 20, 2, 2, and 4 have different brightness and aging characteristics, V,

Page 6 583892 V. Description of the invention (3) Therefore, the aging process with a predetermined current and a predetermined time to pass the current can make the red, green, and blue light-emitting substances 2 0, 2 2, 2 4 to varying degrees. The aging causes the plurality of red, green, and blue images displayed on the organic light emitting diode display panel 2 to be adjusted to a state of optimal color rendering balance. In addition, through the area where the current is passed, whether a defect detection process can be performed to screen and eliminate defective organic light emitting diode display panels 2; among them, the organic light emitting diode display panel 2 must be detected by an aging signal. The source 2 6 and the aging signal source 2 6 are connected to a plurality of data driving circuits 14 and a plurality of scanning driving circuits 16 through an aging line 2 8. The above aging procedure is to give different predetermined currents and different predetermined passing current times to the red, green, and blue light-emitting substances 20, 2, 2, and 4, respectively. The different predetermined currents require a plurality of data driving circuits 1 4 And a plurality of scan driving circuits 16 are driven, so before the organic light emitting diode display panel 2 is adjusted and tested, the data driving circuit 14 and the scan driving circuit 16 must be set on the substrate 4 in advance. However, according to the above conventional detection method, if a defective product is found, the entire organic light emitting diode display panel 2 will be discarded. Since the plurality of data driving circuits 14 and the plurality of scanning driving circuits 16 must be reconciled. The front panel of the organic light emitting diode display panel 2 and the test panel 2 are disposed on the substrate 4, so that a large amount of the data driving circuit 14 and the scanning driving circuit 16 on the substrate 4 will be discarded, which will cause a lot of waste.

583892 V. Description of the invention (4) In view of this, the main object of the present invention is to provide a detection structure of a temporary organic light-emitting diode display panel 2 and a method for manufacturing the detection structure to solve the above problems. SUMMARY OF THE INVENTION The main object of the present invention is to provide a temporary detection structure for aging and pre-burning the organic light emitting diode display panel when the organic light emitting diode display panel is manufactured ( bur η-i η) and detecting defects of the organic light emitting diode display panel. Another object of the present invention is to avoid wasting the driving circuit due to the defective organic light emitting diode display panel. The invention relates to a detection structure for an organic light emitting diode display panel and a manufacturing method of the detection structure. When the organic light emitting diode display panel is manufactured, the detection structure is used for reconciling and detecting the organic light emitting diode. Polar display panel. The organic light emitting diode display panel includes a plurality of signal lines. The signal lines include a plurality of red signal lines, a plurality of green signal lines, and a plurality of blue signal lines are alternately arranged on a substrate. The detection structure includes a plurality of red extension signal wires, a plurality of green extension signal wires, and a plurality of blue extension signal wires, which are respectively connected and extended from the red signal wires, the green signal wires, and the blue signal wires. A rural worker 4 dagger, red aging line, a green old 4 dagger, green aging 1 i n e, and a blue aging line (b 1 u e a g i n g 1 i n e) are parallel or close to each other.

583892 V. Description of the invention (5) It seems to be arranged in parallel, and is separated from the red extension signal wires, the green extension signal wires, and the blue extension signal wires by an insulating layer, and is located on different planes, and passes through A plurality of through connections (via) are electrically connected to each of the red extension signal lead, the green extension signal lead, and the blue extension signal lead, respectively. The red aging line, the green aging line and the blue aging line are respectively passed with a predetermined current to detect the organic light emitting diode display panel. Therefore, the red aging wire, the green aging wire and the blue aging wire on the detection structure are electrically connected to the red signal wires, the green signal wires, and the blue signal wires, respectively. Current to detect the organic light emitting diode display panel. Thereby, a defective organic light emitting diode display panel is detected earlier before a plurality of driving circuits are arranged on the substrate, thereby avoiding wasting the driving circuits. In addition, it is also possible to perform aging procedures, burn-in procedures and defect detection on the organic light emitting diode display panel at the same time. The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings. Embodiment: Please refer to FIG. 2A, which is a schematic diagram of the detection structure 36 of the organic light-emitting diode display panel 30 of the present invention. The invention provides a detection structure 3 6 used in an organic light emitting diode display panel 30, and is used for manufacturing organic

583892 V. Description of the invention (6) The light emitting diode display panel 30 is used for reconciling and detecting the organic light emitting diode display panel 30. The organic light emitting diode display panel 30 includes a plurality of signal wires (data 1 ine), and these signal wires include a plurality of red, green, and blue signal wires 3 2 2, 3 2 4, 3 2 6, and these signals The wires 3 2 2, 3 2 4, 3 2 are alternately and parallelly (or approximately parallel) arranged on a substrate 3 4 in the order of red, green, and blue, and correspond to a plurality of red light-emitting substances and a plurality of green light-emitting substances, respectively, vertically. And a plurality of blue light-emitting substances, and a plurality of corresponding red images, green images, and blue images are displayed on the organic light-emitting diode display panel 30 by passing current. Detection structure 36 includes a plurality of red extension signal wires 3 8 2, a plurality of green extension signal wires 3 8 4, a plurality of blue extension signal wires 3 8 6, a red aging line 442, and a green aging line 444 , A blue aging line 44 6 and an aging signal source 4 6. A plurality of red, green and blue signal extension wires 3 8 2, 3 8 4, 3 8 6 are respectively connected and extended from the organic light emitting diode display panel 3 0, a plurality of red, green and blue signal wires 3 2 2, 3 2 4, 3 2 6 and they are integrally formed during production. Among them, a plurality of red, green, and blue extension signal wires 3 8 2, 3 8 4, 3 8 6 are also like the organic light emitting diode display panel 30. A plurality of red, green, and blue signal wires 3 2 2, 3 2 4 , 3 2 6-like, arranged alternately and in parallel (or approximately parallel) on the substrate 3 4. Red aging line 4 4 2, green aging line 4 4 4 and blue aging line 4 4 6 are parallel to each other

Page 10 583892 V. Description of the invention (7) Or arranging and connecting the aging signal source 46 in parallel, used to transfer the current from the aging signal source 46 to perform the aging, burn-in and defect detection procedures. Red aging wire 4 4 2, green aging wire 4 4 4 and blue aging wire 4 4 6 and a plurality of red extension signal wires 3 8 2, a plurality of green extension signal wires 3 8 4 and a plurality of blue extension signal wires 3 8 60% orthogonal or nearly orthogonal arrangement. Please refer to FIG. 2B, which is a lateral cross-sectional view of the detection structure 36 of the present invention. Red, green, and blue aging wires 4 4 2, 4 4 4, 4 4 6 An insulating layer 4 0 (passivati ο η) is used with a plurality of red, green, and blue extension signal wires 3 8 2, 3 8 4, 3 8 6 isolated and located on different planes. Among them, the red aging wire 4 4 2 and the plurality of red extension signal wires 3 8 2 are electrically connected through a plurality of through-connections 4 2 (ν ia), and the green aging wire 4 4 4 and the plurality of green extension signal wires 3 8 4 is electrically connected through another plurality of through-connections 4 2, and the blue aging wire 4 4 6 is electrically connected with a plurality of blue extension signal wires 3 8 6 through other plurality of through-connections 42. Then, the red, green, and blue aging wires 4 4 2, 4 4 4, 4 4 6 are respectively passed with a predetermined current to light the red, green, and blue light in the organic light emitting diode display panel 30, respectively. The substance is subjected to an aging process to harmonize the color development of the organic light emitting diode display panel 30, as well as a burn-in process and a defect detection. Then, after the testing of the detection structure 36 is completed, a plurality of red, green, and blue extension signal wires 3 8 2, 3 8 4, 3 8 6 and a plurality of red, green, and blue signal wires 3 2 2, 3 2 4, 3 2 6 separation, the separation method can be removed by physical means, such as knife cutting, laser cutting, or grinding to remove the detection structure 3 6, or by

Page 11 583892 V. Description of the invention (8) It is separated by chemical means, such as etching and chemical solvent etching. Please refer to FIG. 2A. A plurality of red, green, and blue extension signal wires 3 8 2, 3 8 4, 3 8 6 and a plurality of red, green, and blue signal wires 3 2 2, 3 2 4, 3 2 6 separated. Further, the present invention includes a manufacturing method of the detection structure 36. The invention relates to a manufacturing method for a detection structure 36 of an organic light emitting diode display panel 30. When the organic light emitting diode display panel 30 is manufactured, the detection structure 36 is used for reconciling and detecting the organic light emitting diode. Polar display panel 30. The organic light emitting diode display panel 3 0 includes a plurality of red, green, and blue signal wires 3 2 2 '3 2 4, 3 2 6 arranged alternately and in parallel (or approximately parallel) on a substrate 3 4, and the detection structure 3 6 The manufacturing method includes the following steps: Please refer to FIG. 2A and FIG. 2B. First, a detection structure 36 is formed on the substrate 34. The detection structure 36 includes a plurality of red, green, and blue extension signal wires 3 8 2, 3 8 4, 3 8 6 arranged on the substrate 34 in an alternating and parallel (or approximately parallel) arrangement, and the extension signal wires 3 8 2 , 3 8 4, 3 8 6 are respectively extended from a plurality of red, green, and blue signal wires 3 in the organic light emitting diode display panel 3 2 3, 2, 324 > 326. Next, an insulating layer 40 is formed to cover A plurality of red, green, and blue extension signal wires 3 8 2, 3 8 4, 3 8 6. Next, a plurality of through-connects are formed at a plurality of predetermined positions on the insulating layer 40.

583892

The wire 42 can penetrate the insulating layer 40, and the through-connection 42 can be formed by plating a through hole or filling a conductive material to form the through-connection 42. Next, a red, green, and blue aging line 4 4 2, 4 4 4, 4 4 6 is formed on the insulating layer 40. The red, green, and blue aging lines 442, 444, and 46.6 are all parallel to each other or nearly flat. And through the plurality of through-connections 42, the red aging wire 442 is electrically connected to the plurality of red extension signal wires 3 8 2, and the green aging wire 4 4 4 is electrically connected to the plurality of extension signal wires 3 8 4. And the blue aging wire 44 6 is electrically connected to the plurality of blue extension signal wires 3 8 6. Next, the aging signal source 4 6 pairs of red, green, and blue aging wires 4 4 2, 4 4 4, and $ 4 6 respectively pass a current of a predetermined magnitude to each of the organic light emitting diode display panel 30 A plurality of red, green, and blue light-emitting substances are subjected to an aging process, a burn-in process, and a defect inspection. Finally, after the testing of the detection structure 36 is completed, a plurality of red, green, and blue extension signal wires 3 8 2, 3 8 4, 3 8 6 will be removed along the area A to connect with the plurality of red, green, and blue signal wires. 3 2 2, 3 2 4, 3 2 6 separated. The separation method can be used to remove the detection structure by physical methods, such as cutting with a knife, laser, or grinding. It can also be separated by chemical methods, such as etching and chemical solvent etching. Therefore, the red, green, and blue aging wires 4 4 2, 4 4 4, 4 4 6 on the detection structure 3 6 and a plurality of red, green, and blue signal wires 3 2 2, 3 2 4, 3 2 6 are used, respectively.

Page 13 583892 V. Explanation of the invention (10) Electrically connected, by detecting a current of a predetermined magnitude, respectively, to detect the organic light emitting diode display panel 30. Therefore, before the plurality of driving circuits are disposed on the substrate 34, a defective organic light emitting diode display panel 30 is detected earlier, so as to avoid wasting the driving circuits. In addition, the aging process, burn-in process, and defect detection of the organic light-emitting diode display panel 30 can be performed at the same time. With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention may be described more clearly, rather than limiting the scope of the present invention with the preferred specific embodiments disclosed above. On the contrary, the purpose is to cover various changes and equivalence within the scope of the patent application scope of the present invention.

Page 14 583892 Brief description of the drawings Figure 1 is a schematic view of a conventional art organic light emitting diode display panel; Figure 2A is a schematic diagram of a detection structure of the present invention for an organic light emitting diode display panel; and Figure 2B is a textbook Side sectional view of the invention detection structure. Explanation of the symbols of the drawings: 2, 3 0: Organic light-emitting diode display panel 4: Substrate 8, 3 2 4: Green signal guide 12 Scanning wire 16 Scanning drive circuit 20 Red luminescent substance 24 Monitoring color luminescent substance 28 Aging line 36 Detection structure 6, 3 2 2 · Red signal wire 1 〇 λ 3 2 6 · Monitoring signal wire 14 Data horse circuit 18 Light-emitting layer 22 Green light-emitting substance 26 Aging signal source 34 Substrate 3 8 2 · Red extension signal wire 3 8 6 · Supervision extension signal wire 4 2: Through connection 4 4 4: Green aging wire 4 6: Aging signal source 3 8 4 · Green extension signal wire 4 0: Insulation layer 4 4 2: Red aging wire 4 4 6: Blue Aging line

Claims (1)

583892 VI. Application Patent Scope 1. A detection structure for an organic light emitting diode display panel is used for reconciling and detecting the organic light emitting diode display panel when the organic light emitting diode display panel is manufactured. The organic light emitting diode display panel includes a plurality of red signal wires, a green signal wire, and a blue signal wire arranged alternately on a 'substrate'. The detection structure includes a plurality of red extension signal wires, which are connected to and extend from the organic light emitting diode. A plurality of red signal wires in the display panel; a plurality of green extension signal wires connected to and extended from the organic light emitting diode display panel; a plurality of blue extension signal wires connected and extended A plurality of blue signal wires from the organic light emitting diode display panel, wherein the red extension signal wires, the green extension signal wires and the blue extension signal wires are alternately arranged on the substrate; a red aging wire , The red aging wire is located at a different level from the red extension signal wires And each of the red extension signal wires is electrically connected through a plurality of through connections (via); a green aging wire, the green aging wire and the green extension signal wires are located on different planes, and a plurality of through The through-connections are electrically connected to each of the green extension signal wires, respectively, and a blue aging wire is located on a different plane from the blue extension-signal wires, and is electrically connected to each through a plurality of through-connections. A blue extension signal wire; wherein the red aging wire, the green aging wire and the blue aging wire are respectively passed with a predetermined current to harmonize and detect the organic light emitting diode display Page 16 583892 VI. Patent Application Panel. 2. The detection structure described in item 1 of the scope of the patent application, wherein the detection structure includes an insulating layer (P assivati〇η) provided on the red extension signal wires, the green extension signal wires and the blue extension The signal wire is between the red aging wire, the green aging wire and the blue aging wire. 3. The detection structure described in item 1 of the scope of the patent application, wherein after the testing of the detection structure is completed, the red extension signal wires, the green extension signal wires and the blue extension signal wires, and the red extension signal wires The signal wires, the green signal wires and the blue signal wires are separated. 4. A manufacturing method of a detection structure for an organic light emitting diode display panel, the detection structure is used for reconciling and detecting the organic light emitting diode display panel when the organic light emitting diode display panel is manufactured. The organic light emitting diode display panel includes a plurality of red signal wires, a green signal wire, and a blue signal wire arranged alternately on a substrate. The manufacturing method includes the following steps: forming a plurality of alternately arranged red extension signal wires on a substrate, A plurality of green extension signal wires and a plurality of blue extension signal wires, which are respectively connected to the red signal wires, the green signal wires and the blue signal wires on the substrate; forming an insulating layer to cover the red extension signal wires , The green extension signal wires and the supervisory extension signal wires, Page 17 583892 Sixth, the scope of the patent application forms a plurality of through-connections at a plurality of predetermined positions on the insulating layer to penetrate the insulating layer; forming a red aging line, a green aging line and a blue aging line on the insulation On the layer, the red aging wire, the green aging wire and the blue aging wire are electrically connected to the red extension signal wires, the green extension signal wires and the blue extension signal wires through the through-connections; A predetermined amount of current is passed through the red aging line, the green aging line, and the blue aging line, respectively, to reconcile and detect the organic light emitting diode display panel. 5. The manufacturing method described in item 4 of the scope of patent application, wherein after the testing of the detection structure is completed, the red extension signal wires, the green extension signal wires and the blue extension signal wires, and a plurality of red The signal wires, the green signal wires and the blue signal wires are separated. 6. A detection structure used for an organic light emitting diode display panel, which is used to reconcile and detect the organic light emitting diode display panel when the organic light emitting diode display panel is manufactured. The organic light emitting diode display panel The panel includes a plurality of signal wires arranged alternately on a substrate, and the detection structure includes: a plurality of types of extension signal wires connected to and extending from the organic light emitting diode display panel, including different types of extension signals Lead wires are alternately arranged on the substrate; a plurality of aging wires (aging 1 ine), the aging wires and the extensions Page 18 583892 VI. Patent application scope Signal wires are located on different planes, and each of the aging wires is electrically connected to a specific type of extended signal wire through at least one through connection (Via); A current of a predetermined magnitude is passed through the wires to reconcile and detect the organic light emitting diode display panel. 7. The detection structure described in item 6 of the scope of the patent application, wherein the detection structure includes an insulating layer (p a s s i v a t i ο η) disposed between the extended signal wires and the aging wires. 8. The detection structure described in item 6 of the scope of patent application, wherein after the test of the detection structure is completed, the extended signal wires are separated from the plurality of signal wires. 9. The detection structure as described in item 6 of the scope of patent application, wherein the signal wires include a plurality of red, green, and blue signal wires arranged on the substrate. 10. The detection structure according to item 9 of the scope of patent application, wherein the extended signal wires include a plurality of red, green, and blue extended signal wires arranged on the substrate. 11. The detection structure as described in item 10 of the scope of patent application, wherein the aging lines include red, green, and blue aging lines, which are electrically connected to each of the red, green, and blue through a plurality of through-connections. Extension signal cable. Page 19, 583892 VI. Application for patent scope 1 2. A method for manufacturing a detection structure for an organic light emitting diode display panel, the detection structure is used for reconciling and detecting when manufacturing the organic light emitting diode display panel The organic light emitting diode display panel includes a plurality of signal wires arranged alternately on a substrate, and the manufacturing method includes the following steps: forming a plurality of alternately arranged extended signal wires on a substrate, Connect the signal wires to the substrate respectively; form an insulating layer to cover the extended signal wires; form a plurality of through wires at a plurality of predetermined positions on the insulating layer to penetrate the insulating layer; form a plurality of aging Each of the aging wires is electrically connected to a specific type of extension signal wire through at least one through-connection; the aging wires are respectively passed with a predetermined current to reconcile and detect the aging wires. Organic light emitting diode display panel. 1 3. The manufacturing method as described in item 12 of the scope of patent application, wherein after the testing of the detection structure is completed, 'the extended signal wires' are separated from the plurality of signal wires. 14. The manufacturing method as described in item 12 of the scope of patent application, wherein the signal wires include a plurality of red, green, and blue signal wires arranged on the substrate. 15. The production method described in item 14 of the scope of patent application, wherein the extensions Page 20 583892 VI. Scope of patent application The signal wire includes a plurality of red, green, and blue extension signal wires arranged on the substrate. 16. The manufacturing method described in item 15 of the scope of patent application, wherein the aging lines include red, green, and blue aging lines, which are electrically connected to each of the red, green, and blue through a plurality of through-connections. Extension signal cable. Page 21