CN117059008A - Micro light emitting diode display panel - Google Patents
Micro light emitting diode display panel Download PDFInfo
- Publication number
- CN117059008A CN117059008A CN202210483717.0A CN202210483717A CN117059008A CN 117059008 A CN117059008 A CN 117059008A CN 202210483717 A CN202210483717 A CN 202210483717A CN 117059008 A CN117059008 A CN 117059008A
- Authority
- CN
- China
- Prior art keywords
- repair
- display panel
- light emitting
- signal
- emitting diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008439 repair process Effects 0.000 claims abstract description 67
- 239000000758 substrate Substances 0.000 claims abstract description 38
- 230000005856 abnormality Effects 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 4
- 238000003698 laser cutting Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 claims 3
- 239000011521 glass Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910002601 GaN Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- 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]
-
- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A micro light emitting diode display panel comprises a substrate and a driver arranged on the substrate. The driver comprises a signal terminal, a signal line, a signal driving circuit and a signal driving circuit, wherein the signal terminal is coupled with the signal line; and the repair terminal is coupled with the repair line arranged on the substrate.
Description
Technical Field
The present invention relates to a micro light emitting diode (led) display panel, and more particularly to a micro led display panel that can be easily repaired.
Background
A micro light emitting diode (microLED, mLED or μled) display panel is one type of flat panel display (flat panel display) that is comprised of individual micro Light Emitting Diodes (LEDs) with a size scale of 1-100 microns. Compared with the traditional liquid crystal display panel, the micro light emitting diode display panel has larger contrast ratio and quicker response time and consumes less power. Micro light emitting diodes (micro light emitting diodes) and Organic Light Emitting Diodes (OLEDs) have low power consumption characteristics, but they have higher brightness, higher luminous efficacy and longer lifetime than Organic Light Emitting Diodes (OLEDs) because they use a group iii-v diode technology, such as gallium nitride.
In manufacturing a micro light emitting diode display panel, when a driver integrated circuit (integrated circuit) is mounted on a glass substrate, an abnormality (e.g., a disconnection or a short circuit) may occur. In order to repair the abnormality, a rework (re-work) is performed to remove the original driver integrated circuit from the glass substrate and then to reinstall the replacement driver integrated circuit on the glass substrate, thus consuming a considerable amount of time and cost. In addition, when the re-work is performed, adjacent micro light emitting diodes are likely to be destroyed.
Therefore, a novel mechanism is needed to overcome the drawbacks encountered in manufacturing micro light emitting diode display panels.
Disclosure of Invention
In view of the foregoing, an objective of the embodiments of the present invention is to provide a micro light emitting diode display panel that can be repaired with less time and cost.
According to an embodiment of the invention, a micro light emitting diode display panel includes a substrate and a driver disposed on the substrate. The driver comprises a power signal terminal and a corresponding repair terminal. The power signal terminal is connected to a power source through a power signal line provided on the substrate. The repair terminal is connected to the power supply through a repair line provided to the substrate. The power signal terminal and the corresponding repair terminal are electrically connected with each other in the driver.
According to another embodiment of the present invention, a micro light emitting diode display panel includes a substrate and a driver disposed on the substrate. The driver includes a signal terminal and a corresponding repair terminal. The signal terminals are coupled to corresponding signal lines of the substrate. The repair terminals are coupled to corresponding repair lines of the substrate. The repair line is partially overlapped with the corresponding signal line, but is not initially electrically connected.
Drawings
Fig. 1 is a block diagram of a micro light emitting diode display panel according to an embodiment of the invention.
Fig. 2 is a top view of a micro light emitting diode display panel according to a first embodiment of the present invention.
Fig. 3 is a top view of a micro light emitting diode display panel according to a second embodiment of the present invention.
[ Main element symbols description ]
100: micro light emitting diode display panel 10: substrate board
101: power signal line 102: repair wire
103: signal line 104: repair wire
11: micro light emitting diode 12: driver(s)
121: power signal terminal 122: repair terminal
123: signal terminal 124: repair terminal
13: timing controllers Vp1, vp2: power supply signal terminal
r_vp1, r_vp2: repair terminal DVDD: digital supply voltage
AVDD: analog supply voltage GND: ground (floor)
T1-T3: data and control input signal terminals D1-D3, dx-Dz: data output signal terminal
C1 to C3, cx to Cz: common output signal terminal r_ta, r_tb: repair terminal
r_da, r_db: repair terminal r_ca, r_cb: repair terminal
r_tbusta, r_tbusb: repair line r_dbusta, r_dbustb: repair wire
r_cbusta, r_cbusb: repair wire
Detailed Description
Fig. 1 shows a block diagram of a micro light emitting diode (micro led) display panel 100 according to an embodiment of the invention. In the present embodiment, the micro light emitting diode display panel 100 may include a plurality of micro light emitting diodes 11 arranged in a matrix form. The micro led display panel 100 may include a driver 12 (e.g., an integrated circuit) that uses a passive matrix addressing (passive matrix addressing) mechanism to drive the micro leds 11. Wherein, the anodes of the micro light emitting diodes 11 in the same row are electrically connected to the driver 12, and the cathodes of the micro light emitting diodes 11 in the same column are electrically connected to the driver 12. The micro light emitting diode display panel 100 may include a timing controller 13 for controlling the driver 12.
Fig. 2 shows a top view of a micro light emitting diode display panel 100 according to a first embodiment of the invention. Wherein the driver 12 is coupled to a substrate 10 (e.g., a glass substrate). The driver 12 may include at least one power signal terminal (terminal, pin or pad) 121, such as Vp1 and Vp2 illustrated in fig. 2. The power signal terminals and other terminals referred to later in this specification may comprise conductive materials such as Indium Tin Oxide (ITO). The power signal terminal 121 may be connected to a power source, such as a digital (digital) power supply voltage (DVDD), an analog (analog) power supply voltage (AVDD), or a Ground (GND), through a power signal line 101 (provided on the substrate 10).
According to one of the features of the present embodiment, the driver 12 of the present embodiment may include at least one repair terminal 122, such as r_vp1 and r_vp2 illustrated in fig. 2, corresponding to the power signal terminal 121. The repair terminal 122 may be connected to a power source via a repair line 102 (provided on the substrate 10). It should be noted that the power signal terminal 121 and the repair terminal 122 are electrically connected to each other in the driver 12.
According to the above embodiment, when the power signal terminal 121 (e.g., vp 1) detects an abnormality (e.g., open circuit or short circuit), the connection (e.g., at the mark X) between the power signal line 101 and the power signal terminal 121 is cut off. The severing may be performed using laser cutting. Accordingly, the repair terminal 122 may be connected to a power source (as shown by the dotted line) via the repair line 102, instead of the abnormal power signal terminal 121 via the power signal line 101. Thus, the abnormality can be repaired without reworking (i.e., removing the original driver 12 from the substrate 10 and reinstalling the replacement driver on the substrate 10). Therefore, the time and cost can be greatly reduced when manufacturing the micro light emitting diode display panel 100.
Fig. 3 shows a top view of a micro light emitting diode display panel 100 according to a second embodiment of the invention. Wherein the driver 12 is coupled to the substrate 10. The driver 12 may include at least one signal terminal 123, such as data and control input signal terminals T1-T3, data output signal terminals D1-D3/Dx-Dz, and common output signal terminals C1-C3/Cx-Cz as illustrated in FIG. 3. The signal terminals 123 may be coupled to corresponding signal lines 103, which are disposed on the substrate 10.
According to one of the features of the present embodiment, the driver 12 of the present embodiment may include at least one repair terminal 124 corresponding to the signal terminal 123. As illustrated in fig. 3, repair terminals r_ta and r_tb correspond to data and control input signal terminals T1 to T3, repair terminals r_da and r_db correspond to data output signal terminals D1 to D3/Dx to Dz, and repair terminals r_ca and r_cb correspond to common output signal terminals C1 to C3/Cx to Cz. In the present embodiment, the repair terminals 124 may be coupled to corresponding repair lines 104, which are disposed on the substrate 10. As illustrated in fig. 3, repair terminals r_ta and r_tb are coupled to corresponding repair lines r_tbusta and r_tbustb, respectively, repair terminals r_da and r_db are coupled to corresponding repair lines r_dbusta and r_dbustb, respectively, and repair terminals r_ca and r_cb are coupled to corresponding repair lines r_cbusta and r_cbustb, respectively.
The repair line 104 and the corresponding signal line 103 may partially overlap, but are not initially electrically connected. As illustrated in fig. 3, repair lines r_tbusta and r_tbustb may partially overlap with the corresponding signal line 103 (which corresponds to signal terminals T1-T3), but are not initially electrically connected; the repair lines r_dbusta and r_dbustb may partially overlap the corresponding signal lines 103 (which correspond to the signal terminals D1-D3/Dx-Dz) but are not initially electrically connected; the repair lines r_cbusta and r_cbustb may partially overlap the corresponding signal lines 103 (which correspond to the signal terminals C1-C3/Cx-Cz) but are not initially electrically connected.
According to the above embodiment, when the signal terminal 123 (e.g., T2) detects an abnormality (e.g., open circuit or short circuit), the connection (e.g., at the mark X) between the signal terminal 123 and the corresponding signal line 103 is cut off. The severing may be performed using laser cutting. Then, an overlapping position between the repair line 104 (e.g., r_tbusb) and the signal line 103 (corresponding to the abnormality) is electrically coupled. The electrical coupling may use laser welding. Then, the repair terminal 124 (e.g., r_tb) is selected and the signal terminal 123 (e.g., T2) corresponding to the abnormality is discarded. The selection and discarding of the driver 12 may be set by the timing controller 13, for example, using a multiplexer (multiplexer) to select from the signal terminal 123 and the repair terminal 124. Accordingly, the signal line 103 (corresponding to an abnormality) may be connected to the repair terminal (e.g., t_tb) instead of being connected to the abnormal signal terminal (e.g., T2). Thus, the abnormality can be repaired without reworking (i.e., removing the original driver 12 from the substrate 10 and reinstalling the replacement driver on the substrate 10). Therefore, the time and cost can be greatly reduced when manufacturing the micro light emitting diode display panel 100. Similarly, when other signal terminals 123 (e.g., D1, C3, cy, or Dx illustrated in fig. 3) detect an abnormality (e.g., a break or a short), the above procedure can be used to repair the abnormality.
The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (16)
1. A micro light emitting diode display panel, comprising:
a substrate;
a driver provided on the substrate, the driver comprising:
the signal terminal is coupled with the signal wire and is arranged on the substrate; a kind of electronic device with high-pressure air-conditioning system
And the repair terminal is coupled with the repair line and is arranged on the substrate.
2. The micro light emitting diode display panel according to claim 1, wherein when the signal terminal detects an abnormality, the connection between the signal line and the signal terminal is cut off.
3. The micro light emitting diode display panel according to claim 1, wherein when the signal terminal detects an abnormality, the connection between the signal terminal and the signal line is cut off, and then the overlapping position between the repair line and the signal line is electrically coupled.
4. The micro light emitting diode display panel according to claim 1, wherein the signal terminal and the repair terminal comprise conductive materials.
5. A micro light emitting diode display panel, comprising:
a substrate;
a driver provided on the substrate, the driver comprising:
the power signal terminal is connected to a power supply through a power signal wire, and the power signal wire is arranged on the substrate; a kind of electronic device with high-pressure air-conditioning system
The repair terminal is corresponding to the power supply signal terminal and is connected to the power supply through a repair wire, and the repair wire is arranged on the substrate;
wherein the power signal terminal and the corresponding repair terminal are electrically connected with each other in the driver.
6. The micro light emitting diode display panel according to claim 5, wherein the connection between the power signal line and the power signal terminal is cut off when the power signal terminal detects an abnormality.
7. The micro light emitting diode display panel according to claim 6, wherein the cutting off of the connection between the power signal line and the power signal terminal uses laser cutting.
8. The micro light emitting diode display panel of claim 5, wherein the power supply comprises a digital power supply voltage, an analog power supply voltage, or ground.
9. The micro light emitting diode display panel according to claim 5, wherein the power signal terminal and the repair terminal comprise conductive materials.
10. A micro light emitting diode display panel, comprising:
a substrate;
a driver provided on the substrate, the driver comprising:
the signal terminals are coupled with the corresponding signal wires and are arranged on the substrate; a kind of electronic device with high-pressure air-conditioning system
Repair terminals corresponding to the signal terminals, the repair terminals being coupled to corresponding repair lines disposed on the substrate;
the repair line is partially overlapped with the corresponding signal line but is not initially electrically connected.
11. The micro light emitting diode display panel according to claim 10, wherein when the signal terminal detects an abnormality, the connection between the signal terminal and the signal line is cut off, and then the overlapping position between the repair line and the signal line is electrically coupled.
12. The micro light emitting diode display panel according to claim 11, wherein the cutting of the connection between the signal terminal and the signal line uses laser cutting.
13. The led display panel of claim 11, wherein the electrical coupling of the overlapping locations between the repair line and the signal line is by laser welding.
14. The micro light emitting diode display panel according to claim 11, wherein the repair terminal is selected among the drivers and the signal terminal corresponding to an abnormality is discarded.
15. The micro light emitting diode display panel of claim 14, wherein the repair terminal is selected using a multiplexer and the signal terminal corresponding to an abnormality is discarded.
16. The led display panel of claim 10, wherein the signal terminals and the repair terminals comprise conductive materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483717.0A CN117059008A (en) | 2022-05-05 | 2022-05-05 | Micro light emitting diode display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483717.0A CN117059008A (en) | 2022-05-05 | 2022-05-05 | Micro light emitting diode display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117059008A true CN117059008A (en) | 2023-11-14 |
Family
ID=88652330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210483717.0A Pending CN117059008A (en) | 2022-05-05 | 2022-05-05 | Micro light emitting diode display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117059008A (en) |
-
2022
- 2022-05-05 CN CN202210483717.0A patent/CN117059008A/en active Pending
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