CN110767131A - Lighting detection method and lighting fixture for liquid crystal display panel - Google Patents
Lighting detection method and lighting fixture for liquid crystal display panel Download PDFInfo
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- CN110767131A CN110767131A CN201910977170.8A CN201910977170A CN110767131A CN 110767131 A CN110767131 A CN 110767131A CN 201910977170 A CN201910977170 A CN 201910977170A CN 110767131 A CN110767131 A CN 110767131A
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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Abstract
The embodiment of the invention provides a lighting detection method of a liquid crystal display panel and a lighting fixture, wherein the liquid crystal display panel is provided with signal lines, and the signal lines comprise grid driving signal lines of a grid driving circuit, and the method is characterized by comprising the following steps of: acquiring a terminal short-circuit ring which is cut off and connected with a signal wire on the liquid crystal display panel after lighting detection in a box forming stage; connecting the signal wires disconnected with the terminal short circuit rings one by using an electric connecting piece; wherein, the same kind of grid driving signal line is in short circuit through an electrical connector; the corresponding electrical connecting pieces are used for providing test voltage for the signal lines so as to carry out lighting detection on the liquid crystal display panel, wherein different types of grid driving signal lines provide different test voltage.
Description
Technical Field
The invention relates to the technical field of lighting detection of liquid crystal display panels, in particular to a lighting detection method of a liquid crystal display panel and a lighting jig.
Background
The LCD panel is a main component of a Liquid Crystal Display (LCD for short), and in the manufacturing process of the LCD panel, a cell formation stage detection is performed on a cut Liquid Crystal cell to determine whether the Liquid Crystal cell has a defect.
Each sub-pixel in the liquid crystal display screen is controlled by a thin film transistor for display, and the Gate Driver On Array (GOA for short) is a driving mode in which a Gate line scanning driving circuit is manufactured On an Array substrate to scan the gates of the thin film transistors line by line. The liquid crystal display panel is a main element in the liquid crystal display panel. Before the thin film transistor substrate in the liquid crystal display panel is modularized, the terminal short circuit ring is usually used for lighting detection in a box forming stage, and then the terminal short circuit ring is cut and cut off by a laser machine and other equipment so as to avoid influencing a subsequent modularization stage.
Disclosure of Invention
Accordingly, the present invention is directed to a method for detecting a lighting of a liquid crystal display panel and a lighting fixture.
In a first aspect, the present invention provides a lighting detection method for a liquid crystal display panel, where a signal line for implementing display of the liquid crystal display panel is disposed in the liquid crystal display panel, and the signal line includes a gate driving signal line (for short, a GOA signal line) of a gate driving circuit, and the method includes:
acquiring a terminal short-circuit ring disconnected with a signal wire in the liquid crystal display panel after lighting detection in a box forming stage;
connecting the signal wires disconnected with the terminal short circuit rings one by using an electric connecting piece; the grid driving signal lines of the same type are in short circuit together through an electrical connecting piece;
providing a test voltage for the signal line by using the electrical connecting piece so as to carry out lighting detection on the liquid crystal display panel; wherein the different kinds of gate driving signal lines receive different test voltages.
The lighting detection method of the liquid crystal display panel cuts off the terminal short-circuit rings after the lighting detection in the box forming stage, can utilize the electric connecting piece to connect the signal wires which are disconnected with the terminal short-circuit rings one by one, and then utilize the electric connecting piece to provide the test voltage for the signal wires, thereby carrying out the lighting detection on the liquid crystal display panel. And the same kind of grid driving signal line passes through the short circuit of electrical connector and is in the same place, is favorable to realizing providing different test voltage to different kinds of grid driving signal line, can improve this liquid crystal display panel's the success rate of detecting of lighting a lamp.
In a second aspect, the invention provides a lighting fixture, in which a signal line for realizing display of a liquid crystal display panel is arranged in the liquid crystal display panel, the signal line includes a gate driving signal line of a gate driving circuit, and the lighting fixture includes a plurality of electrical connectors for connecting the signal lines disconnected from a terminal short circuit ring one by one; wherein, the same kind of grid drive signal line passes through the short circuit of electrical connector.
The lighting fixture comprises a plurality of electrical connectors for connecting the signal lines disconnected with the terminal short circuit rings one by one, wherein the same type of grid driving signal lines are shorted together through the corresponding electrical connectors. After the lighting detection in the box forming stage, the terminal short-circuit ring is cut off, and the electric connecting piece of the lighting fixture can be used for connecting the signal wire of the liquid crystal display panel, so that the lighting detection of the liquid crystal display panel is realized. Therefore, by using the method for detecting the lighting of the liquid crystal display panel, the lighting of the liquid crystal display panel can be detected again even if the terminal short-circuit ring is cut off after the lighting detection in the box forming stage. And the same kind of grid driving signal line passes through the short circuit of electrical connector and is in the same place, is favorable to realizing providing different test voltage to different kinds of grid driving signal line, can improve this liquid crystal display panel's the success rate of detecting of lighting a lamp.
Drawings
FIG. 1 is a schematic waveform diagram of a gate driving signal for LCD panel level transmission according to an embodiment of the present invention;
fig. 2 is a schematic waveform diagram of a driving signal of a liquid crystal display panel in non-array substrate line driving technology according to an embodiment of the invention;
FIG. 3 is a flowchart illustrating a lighting detection method of a liquid crystal display panel according to an embodiment of the invention;
FIG. 4 is a general layout diagram of a lighting fixture according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the structure within the dashed box of FIG. 4;
FIG. 6 is a schematic diagram illustrating connection of left gate driving test signal traces in FIG. 5;
FIG. 7 is a schematic diagram of data test signal traces according to an embodiment of the invention;
FIG. 8 is a schematic diagram illustrating a terminal shorting ring and a gate driving signal line after being disconnected according to an embodiment of the present invention;
fig. 9 is a schematic view of the terminal shorting ring and the gate driving signal line in fig. 8 connected by a conductive adhesive line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As introduced in the background art, before the thin film transistor substrate in the liquid crystal display panel is modularized, the terminal short circuit ring is usually used to perform lighting detection in the box forming stage, and then the terminal short circuit ring is cut off by a laser machine or other devices, so as to avoid affecting the subsequent modularization stage, and the module stage cannot perform lighting detection on the liquid crystal display panel any more, and only can detect the problem of poor appearance of the liquid crystal display panel, and the problem of poor electrical property cannot be detected, so that the inspector cannot judge whether the liquid crystal display panel after being modularized has defects. Therefore, the embodiment of the invention provides a lighting detection method for a liquid crystal display panel, which can perform lighting detection on the liquid crystal display panel in the assembling stage. It should be noted that the modularizing stage in the embodiment of the present invention includes a stage after the liquid crystal display panel is modularized. The cell forming stage in the embodiment of the invention comprises a stage when the liquid crystal display panel is formed into a cell and a stage after the cell is formed and before modularization.
The embodiment of the invention provides a lighting detection method of a liquid crystal display panel, which can realize lighting detection of the liquid crystal display panel at a module stage.
The liquid crystal display panel mentioned in the embodiment of the invention is a main element in the liquid crystal display screen, and the basic manufacturing process of the liquid crystal display screen is divided into four sections: array (Array) process, color Filter (color Filter) process, Cell (Cell) process, and Module (Module) process. Wherein the array process mainly comprises forming a Thin Film Transistor (TFT) on a glass substrate; the color film manufacturing process mainly comprises the steps of forming a color film substrate; the box forming process mainly comprises the steps of forming liquid crystal cutting splinters, and injecting liquid crystal materials between the glass substrate and the color film substrate; the module process mainly includes installing the driving chip, printed circuit board, backlight module and so on the cut panel.
In order to ensure the yield of the liquid crystal display panel, a plurality of inspection procedures are required in the manufacturing process, wherein one important inspection procedure is to test the cut liquid crystal box, namely, the box stage detection is carried out to confirm whether the liquid crystal box has defects. For example, a terminal short-circuit ring is disposed on the periphery of the liquid crystal display panel before modularization, and is connected with a thin film transistor gate driving signal line. After the lighting detection in the box forming stage, the terminal short circuit ring of the liquid crystal display panel is cut by a laser machine and the like until the terminal short circuit ring is cut off, and then the liquid crystal display panel is sent to be modularized. The terminal short circuit ring is a metal circuit on the periphery of the liquid crystal display panel and is used for realizing a short circuit bar (Shorting bar) type lighting test. And then, the conductive adhesive can be used for providing a driving voltage signal for the liquid crystal display panel to realize the lighting detection of the assembled liquid crystal display panel.
Specifically, the conductive adhesive is a strip-shaped conductor which is lapped on the liquid crystal display panel to provide a driving voltage signal for the panel. At the same time, the elongated conductor can generally only output one voltage. However, in the liquid crystal display panel adopting the array substrate row driving technology, each gate driving signal line may need two or more different voltages to be controlled at the same time. Illustratively, at the same time, a low-frequency Clock (CK) signal line needs 28V or-8V voltage control, a constant-voltage low-level (VSS) signal line needs 6V voltage control, a high-frequency clock (LC) signal line needs 28V voltage control, a Starting (ST) signal line of a driving circuit needs 28V or-8V voltage control, and an array substrate common electrode (ACOM) signal line needs 6.5V voltage control. Therefore, the conductive paste may not be used to transmit signals to light the display panel. The array substrate line driving technology is to manufacture a gate line scanning driving signal circuit on an array substrate to realize a driving mode of scanning the gate line by line. In addition, the gate driving signal line further includes a common electrode (CK) signal line, and the like, which is not limited herein.
For the liquid crystal display screen of the non-array substrate row driving technology, the terminal short circuit ring is cut off after the lighting test in the box forming stage, if the terminal short circuit ring is abnormal, the lighting test can be realized by using the conductive adhesive through the 1D1G mode. The 1D1G scheme is a scheme in which all data signal lines selected at the same time in a liquid crystal display panel of the non-array substrate row driving technique are supplied with the same voltage, and all gate driving signal lines in all rows selected at the same time are supplied with the same voltage. Therefore, the conductive adhesive is used for providing a driving voltage signal for the liquid crystal display panel to perform lighting detection, and the method is suitable for the lighting test of the liquid crystal display screen in the 1D1G mode in the non-array substrate line driving technology.
In the liquid crystal display panel using the array substrate row driving technique as described above, two or more different voltages are required to control the respective gate driving signal lines at the same time, and thus it is not suitable to perform the lighting test of the 1D1G method using a conductive adhesive after cutting off the terminal short-circuit loops. Note that the data signal lines mentioned in the embodiments of the present invention include R (red) pixel data signal lines, G (green) pixel data signal lines, and B (blue) pixel data signal lines.
In addition, as shown in fig. 1, the turn-on mode of the gate driving signals in the liquid crystal display panel with the array substrate row driving technology is the cascade-on mode, and as shown in fig. 2, the liquid crystal display panel with the non-array substrate row driving technology is the odd-even row gate driving signals simultaneously on, which further indicates that the latter lighting detection logic cannot be used in the former. In fig. 2, the first row and the third row are waveforms of driving signals for the gates of odd and even rows, respectively, and the second row is a waveform of a data signal.
Therefore, the embodiment of the invention provides a method for detecting the lighting of the liquid crystal display panel, which can realize the lighting detection of the liquid crystal display panel in the module stage when the liquid crystal display panel is cut off, and can provide different voltages at the same time. The liquid crystal display panel adopts an array substrate grid driving technology, namely a grid line scanning driving signal circuit is manufactured on an array substrate so as to realize a driving mode of scanning grids line by line. The liquid crystal display panel is provided with signal lines, including data signal lines and gate driving signal lines of a gate driving circuit. The gate driving signal lines may include an array substrate common electrode signal line, a high frequency clock signal line, a start signal line, a constant voltage low level signal line, and a low frequency clock signal line. The data signal lines may include a red pixel data signal line, a green pixel data signal line, and a blue pixel data signal line.
As shown in fig. 3, the method for detecting the lighting of the liquid crystal display panel includes steps 302 to 306:
step 302: and acquiring a terminal short-circuit ring which is cut off and connected with the signal wire on the liquid crystal display panel after lighting detection in the box forming stage.
Specifically, the terminal short-circuit ring is a metal line provided on the periphery of the liquid crystal display panel and connected to a panel terminal, and is used to implement lighting detection by a short-circuit bar (shorting bar).
Step 304: and the signal lines disconnected with the terminal short circuit rings are connected one by using the electrical connecting pieces, wherein the same type of grid driving signal lines are in short circuit through the corresponding electrical connecting pieces.
Optionally, each gate driving signal line is connected to a corresponding electrical connector, where one electrical connector is connected to one gate driving signal line, and gate driving signal lines of the same signal may also be connected to the same electrical connector. The electrical connector can comprise a probe and also can comprise a conductive adhesive line, such as a gold adhesive line, which has high stability, good conductivity and good bonding effect and is beneficial to the stable electrical connection with the grid driving signal line and the data signal line.
As for the connection with the gate driving signal line by the probe, the probe may be stuck to a region where the gate driving signal line is disconnected from the terminal short ring, i.e., a region where the gate driving signal line is to be bonded (bonded) to a driving chip (IC) after the module is formed. Illustratively, the step of connecting the probe to the gate driving signal line includes: providing a lighting fixture, wherein the lighting fixture comprises a plurality of probes and peripheral wires connected with the probes, then contacting a welding Pad (Pad) of each grid driving signal wire, such as a welding Pad, by using the probes, and then shorting the peripheral wires connected with the same signal welding Pad together. The subsequent steps are to utilize the short-connected peripheral wires and probes to provide different testing voltages for different kinds of grid driving signal wires.
Similarly, the connection between the probe and the data signal line may be made by pricking the probe to a region where the data signal line is disconnected from the terminal short-circuit ring, i.e., a region where the data signal line is to be bonded (bonded) to a driving chip (IC) after the modularization. The specific steps of connecting the probe with the data signal line include: the welding pads (Pad) of each grid driving signal wire are contacted by the probes of the lighting fixture, and then the peripheral wires connected with the same signal welding pads are shorted together. For example, the peripheral traces of the pads connecting the red pixel data signal lines are shorted together, similarly to the pads of the green and blue pixel data signal lines. The subsequent step is to utilize the peripheral wiring to provide different test voltages for different kinds of gate driving signal lines.
Further, fig. 4 provides an overall layout diagram of the lighting fixture in an embodiment. The lighting fixture comprises a signal generator, peripheral wiring, probes and test signal wiring (including data test signal wiring and grid drive test signal wiring), wherein the signal generator is connected with the probes through the peripheral wiring and the test signal wiring, the probes are connected with terminals in a liquid crystal display panel, namely, lighting test signals output by the signal generator are shunted to the test signal wiring through the peripheral wiring, and are finally input into the liquid crystal display panel through the probes to realize lighting detection. Fig. 4 is a connection structure 410 of a signal generator and a test signal trace, fig. 5 is an enlarged schematic view of the connection structure 410 of the dashed line frame of fig. 4, fig. 5 is a schematic view of the connection structure of the signal generator and the test signal trace, the test signal trace 510 is selected in the dashed line frame of fig. 5, the middle is a data test signal trace, and the two sides are gate driving test signal traces. Fig. 6 is a schematic diagram of the left gate driving test signal traces in fig. 5, and a dashed frame in fig. 6 is a selected alignment terminal 610 for aligning with a terminal on the liquid crystal display panel, so that the gate driving test signal traces of the lighting fixture correspond to the gate driving signal lines of the liquid crystal display panel one to one. Fig. 7 is a schematic diagram of a data test signal trace 710.
As shown in fig. 6, each gate driving test signal trace end 620 is designed to be a bent line, so that the contact area of each gate driving test signal trace end 620 with the probe is greatly increased. As shown in fig. 7, the data test signal traces are divided into four rows of traces, which also increases the contact area between the data test signal traces and the probes.
Regarding the connection between the conductive adhesive line and the gate driving signal line, fig. 8 provides a schematic diagram of the terminal short-circuit ring and the gate driving signal line after the terminal short-circuit ring is disconnected in one embodiment, and fig. 8 includes the terminal short-circuit ring 810 and the gate driving signal line 820. The width of the terminal short-circuit ring cut off can be 80-200 μm. Based on fig. 8, fig. 9 is a schematic diagram of the terminal short-circuit ring and the gate driving signal line connected by the conductive adhesive line in an embodiment. In the figure, each gate driving signal line is connected to a corresponding terminal short-circuit ring through a conductive adhesive line 830, and then the terminal short-circuit rings with the same signal can be shorted together, and in the subsequent steps, different testing voltages are provided for different types of gate driving signal lines by using the shorted terminal short-circuit rings.
With regard to the connection with the data signal lines by the conductive adhesive lines, each data signal line is connected with a corresponding terminal short-circuit ring by a conductive adhesive line, and then the terminal short-circuit rings of the same signal may be shorted together, for example, the terminal short-circuit rings connected with the red pixel data signal lines. The subsequent steps utilize the short-circuited terminal short-circuit ring to provide different test voltages for different kinds of grid driving signal lines.
The above embodiments have described specific ways of connecting the conductive paste lines and the probes to the data signal lines, respectively. In other embodiments, a strip-shaped conductive adhesive can be connected with the data signal line, the conductive adhesive is easy to arrange, and compared with a mode that the grid driving signal line and the data signal line are all connected with the conductive adhesive line or the probe, the labor cost can be saved.
Step 306: the electric connecting piece is used for providing test voltage for the signal wire so as to carry out lighting detection on the liquid crystal display panel, wherein different types of grid driving signal wires are connected with different test voltages.
Optionally, step 306 includes applying 1D1G lighting detection to provide voltages to the signal lines by using the electrical connectors, that is, providing the same test voltage to all the data signal lines and providing different voltages to different gate driving signal lines. Therefore, the advantage of the embodiment of connecting the data signal line by using the strip-shaped conductive adhesive can be further embodied. For example, a 28V test voltage is provided to the low frequency clock signal line, while a-6V test voltage is provided to the constant voltage low level signal line. The on-off circuit of the multimeter can be used for carrying out signal test on the welding pad of the modular liquid crystal display panel, so that the grid driving signal lines with the same signals are collected. Further, as described above, the test voltage of the low frequency clock signal line may be provided in a cascade manner.
According to the lighting detection method of the liquid crystal display panel, the terminal short-circuit ring is cut off after lighting detection in the box forming stage, the grid driving signal line and the data signal line of the driving circuit disconnected with the terminal short-circuit ring can be connected through the electric connecting piece, then different testing voltages are provided for different types of grid driving signal lines through the electric connecting piece, and testing voltages are provided for the data signal line, so that the lighting detection of the liquid crystal display panel is carried out. Therefore, by using the method for detecting the lighting of the liquid crystal display panel, the lighting of the liquid crystal display panel can be detected again even if the terminal short-circuit ring is cut off after the lighting detection in the box forming stage. And each grid driving signal line is respectively connected with a corresponding electrical connecting piece, thereby being beneficial to providing different test voltages for different kinds of grid driving signal lines and improving the success rate of lighting detection of the liquid crystal display panel.
It should be understood that, although the steps in the flowchart of fig. 3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 3 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The embodiment of the invention also provides a lighting fixture, which is used for lighting test of the liquid crystal display panel, wherein the liquid crystal display panel is internally provided with signal wires, the signal wires comprise grid driving signal wires of a grid driving circuit, and the lighting fixture comprises a plurality of electrical connecting pieces, which are used for connecting the signal wires disconnected with the terminal short circuit rings one by one; wherein, the same kind of grid drive signal line passes through the short circuit of electrical connector.
When the electrical connector includes a plurality of probes and peripheral wires connected to the probes, the lighting fixture is specifically limited as described in the foregoing embodiments, and details are not repeated herein.
The lighting fixture in the embodiment of the invention comprises a plurality of electrical connectors for connecting signal wires disconnected with the terminal short circuit ring, wherein the same type of grid driving signal wires are connected together in a short circuit mode through the corresponding electrical connectors. After the lighting detection in the box forming stage, the terminal short-circuit ring is cut off, and the electric connecting piece of the lighting fixture can be used for connecting the signal wire of the liquid crystal display panel, so that the lighting detection of the liquid crystal display panel is realized. Therefore, by using the method for detecting the lighting of the liquid crystal display panel, the lighting of the liquid crystal display panel can be detected again even if the terminal short-circuit ring is cut off after the lighting detection in the box forming stage. And the same kind of grid driving signal line is connected together through corresponding electrical connector short circuit, is favorable to realizing providing different test voltages to different kinds of grid driving signal line, can improve this liquid crystal display panel's the success rate of detecting of lighting a lamp.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A lighting detection method of a liquid crystal display panel is provided, wherein a signal line for realizing the display of the liquid crystal display panel is arranged in the liquid crystal display panel, and the signal line comprises a grid driving signal line of a grid driving circuit, and the method is characterized by comprising the following steps:
acquiring a terminal short-circuit ring disconnected with a signal wire in the liquid crystal display panel after lighting detection in a box forming stage;
connecting the signal lines disconnected with the terminal short circuit rings one by using an electrical connecting piece, wherein the same type of grid driving signal lines are in short circuit through the electrical connecting piece;
and providing test voltage for the signal lines connected with the electric connecting piece so as to perform lighting detection on the liquid crystal display panel, wherein the test voltage received by different kinds of grid driving signal lines is different.
2. The method of claim 1, wherein the signal lines further include data signal lines including a red pixel data signal line, a green pixel data signal line, and a blue pixel data signal line;
in the step of connecting the signal lines disconnected with the terminal short circuit rings one by using the electrical connecting pieces, the data signal lines of the same color are in short circuit through the electrical connecting pieces; the supplying of the test voltage to the signal lines includes supplying the same test voltage to the data signal lines of the same color.
3. The method according to claim 1 or 2, wherein the step of connecting the signal lines disconnected from the terminal short-circuiting ring one by one with an electrical connection member comprises:
providing a lighting fixture, wherein the lighting fixture comprises a plurality of probes and peripheral wiring connected with the probes; the electrical connector comprises a plurality of probes and peripheral wires connected with the probes;
and contacting the welding pad of each signal wire by using a probe, and short-circuiting peripheral wires connected with the same signal welding pad.
4. The method according to claim 1 or 2, wherein the step of connecting the signal lines disconnected from the terminal short-circuiting ring one by one with an electrical connection member comprises: connecting the gate drive signal lines with the terminal short-circuit rings one by using conductive adhesive lines; the electrical connector comprises the conductive adhesive line.
5. The method of claim 5, wherein the conductive glue line is a gold glue line.
6. The method of claim 1, 2 or 5, wherein the gate driving signal lines comprise an array substrate common electrode signal line, a high frequency clock signal line, a start signal line, a constant voltage low level signal line, and a low frequency clock signal line.
7. A lighting fixture is used for lighting test of a liquid crystal display panel, signal lines used for realizing display of the liquid crystal display panel are arranged in the liquid crystal display panel, and the signal lines comprise grid driving signal lines of a grid driving circuit; wherein, the same kind of grid drive signal line passes through the short circuit of electrical connector.
8. The lighting fixture of claim 7, wherein the electrical connectors comprise the plurality of probes and peripheral traces connected to the probes; each probe is used for contacting a welding pad of the signal wire of the liquid crystal display panel; wherein the peripheral traces connected to the same signal pads via the probes are shorted together.
9. The lighting fixture according to claim 8, wherein the lighting fixture includes a signal generator for generating test signals, and test signal traces respectively connected to peripheral traces and probes, the peripheral traces being connected to the signal generator for shunting the test signals to the test signal traces and inputting the test signals to the pads of the signal lines of the lcd panel through the probes.
10. The lighting fixture according to claim 9, wherein the test signal traces include gate-driving test signal traces, and ends of the gate-driving test signal traces are designed as bent lines.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296296A (en) * | 2021-05-24 | 2021-08-24 | 京东方科技集团股份有限公司 | Liquid crystal box testing device and method |
| CN113554961A (en) * | 2021-07-06 | 2021-10-26 | 深圳市华星光电半导体显示技术有限公司 | Display panel |
| CN114495821A (en) * | 2021-11-19 | 2022-05-13 | 京东方科技集团股份有限公司 | Display panel and display device |
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