# US 12,111,546 B2 · Array substrate, liquid crystal display panel, and control method

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- Number: US 12,111,546 B2
- Document ID: US12111546B2
- Status: Granted
- Kind: B2
- Application number: 18/092,167
- Filed: 2022-12-30
- Published: 2023-11-16
- Granted: 2024-10-08
- Earliest claimed: 2022-05-10
- Assignees: Hkc Corporation Limited
- Applicants: Hkc Corporation Limited
- Inventors: Di Wu; Haibo Li; Yao Chen; Haijiang Yuan
- Web page: https://patentgrep.com/patent/US12111546B2

## CPC

- G02F 1/136254: {Checking; Testing}
- G09G 3/36: using liquid crystals
- G02F 1/13454: {Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence)}
- G02F 1/136286: {Wiring, e.g. gate line, drain line}
- G09G 3/006: {Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309)}
- G09G 3/3622: {using a passive matrix (G09G3/3674 - G09G3/3696 take precedence)}
- H10D 86/441: {Interconnections, e.g. scanning lines}
- H10D 86/60: wherein the TFTs are in active matrices
- G02F 1/133528: {Polarisers}
- G09G 2300/0408: Integration of the drivers onto the display substrate
- G09G 2310/0202: Addressing of scan or signal lines
- G09G 2320/0223: Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- G09G 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof
- H03M 1/124: {Sampling or signal conditioning arrangements specially adapted for A/D converters}
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H03M: CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means F15C4/00; optical analogue/digital converters G02F7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C)

## Abstract

Disclosed are an array substrate, a liquid crystal display panel, and a control method. The array substrate (1) comprises a plurality of connecting wire assemblies (20) and a driver (30), each connecting wire assembly (20) comprises a wiring group (22) and an acquisition module (21), the acquisition module (21) is used to detect the electrical parameters of the wiring group (22) and feed them back to the driver (30). The present disclosure can adjust the input voltage according to the impedance of the wiring group (20), so that the driving voltage of each data line or each scanning line is the same and the display uniformity can be improved.

## Claims

### Claim 1

An array substrate for a liquid crystal display panel, wherein
the liquid crystal display panel comprises a display area and a non-display area, the array substrate comprises a first area and a second area, the first area corresponds to the display area, the second area corresponds to the non-display area;
the first area comprises a plurality of pixel parts, a plurality of first control lines and a plurality of second control lines, the first control lines comprise one of a scan line and a data line, the second control line comprises the other one of the scan line and the data line, wherein,
the second area comprises a plurality of connecting wire assemblies and a driver, each of the connecting wire assemblies comprises a wiring group and an acquisition module,
the driver is electrically connected with the input end of the wiring group, to provide input voltage to the wiring group, the output end of the wiring group is electrically connected with the first control line, the input end of the acquisition module is electrically connected with the output end of the wiring group, the output end of the acquisition module is electrically connected with the driver, and the acquisition module is used for detecting the electrical parameters of the wiring group and feeding the electrical parameters back to the driver;
wherein the acquisition module comprises a sampling circuit and an analog-to-digital converter, an input end of the sampling circuit is electrically connected with an output end of the wiring group, an output end of the sampling circuit is electrically connected with an input end of the analog-to-digital converter, and the output end of the analog-to-digital converter is electrically connected with the driver; and
the wiring group comprises a first wiring and a second wiring, the first wiring comprises a first end and a second end, the second wiring group comprises a third end and a fourth end, the first end and the third end are both electrically connected with the input end of a same first control wire, the second end is electrically connected with the driver, the fourth end is electrically connected with the output end of the sampling circuit.

### Claim 2 (depends on 1)

The array substrate of claim 1, wherein the sampling circuit comprises an amplifier and a filter capacitor, the amplifier is configured to amplify the collected electrical parameter information, and the filter capacitor is configured to filter and absorb current fluctuations generated during the operation of the sampling circuit.

### Claim 3 (depends on 1)

The array substrate of claim 1, wherein the electrical parameters of the wiring group measured by the acquisition module comprise one of current, voltage, or impedance.

### Claim 4 (depends on 1)

The array substrate of claim 1, wherein the array substrate further comprises a substrate, a first metal layer, an insulating layer, a semiconductor layer and a second metal layer sequentially stacked along a first direction, the first control line, the first wiring and the second wiring are all disposed on the second metal layer, with projecting in a plane parallel to the substrate, the first wiring and the second wiring are spaced apart.

### Claim 5 (depends on 1)

The array substrate of claim 1, wherein the array substrate further comprises a substrate, a first metal layer, an insulating layer, a semiconductor layer and a second metal layer sequentially stacked along the first direction, the first control line and the first wiring are both provided on one of the first metal layer and the second metal layer, the second wiring is provided on the other of the first metal layer and the second metal layer, with projecting in a plane parallel to the substrate, the first wiring and the second wiring are spaced apart or at least partially overlapped.

### Claim 6 (depends on 4)

The array substrate of claim 4, wherein the first wiring and the second wiring have the same line width.

### Claim 7 (depends on 1)

The array substrate of claim 1, wherein the spacing between the first wiring and the second wiring is greater than or equal to 6 μm.

### Claim 8 (depends on 1)

The array substrate of claim 1, wherein a switching triode is provided between a connecting wire assembly and a corresponding first control line, a gate electrode of the switching triode is electrically connected with the first end, the drain electrode of the switching triode is electrically connected with the third end, the source electrode of the switching triode is electrically connected with the first control line, and the gate electrode of the switching triode is short-connected with the drain electrode of the switching triodes.

### Claim 9 (depends on 1)

The array substrate of claim 1, wherein the acquisition module comprises a current sensor, the wiring group comprises a first wiring and a second wiring, the first wiring comprises a first end and a second end, the second wiring comprises a third end and a fourth end, the first end and the third end are both electrically connected with the input end of a same first control line, the second end and the fourth end are respectively electrically connected with two ends of the acquisition module, and the acquisition module is electrically connected with the driver.

### Claim 10 (depends on 1)

The array substrate of claim 1, wherein a plurality of the connecting line assemblies correspond to a plurality of the data lines one by one, and the output end of each wiring group is electrically connected with the data line.

### Claim 11

A liquid crystal display panel, with a display area and a non-display area, wherein
the liquid crystal display panel comprises a first polarizing plate, an array substrate, a liquid crystal layer, a color filter substrate and a second polarizing plate stacked in sequence along a first direction;
the array substrate comprises the first area and the second area, the first area corresponds to the display area, the second area corresponds to the display area, the first area comprises a plurality of pixel parts, a plurality of first control line and a plurality of second control line, the first control line comprises one of scanning line and data line, the second control line comprises the other one of scanning line and data line; and
the second area comprises a plurality of connecting line assemblies and a driver, each of the connecting line assemblies comprises a wiring group and an acquisition module, the driver is electrically connected with the input end of the wiring group to provide input voltage to the wiring group, the output end of the wiring group is electrically connected with the first control line, the input end of the acquisition module is electrically connected with the output end of the wiring group, the output end of the acquisition module is electrically connected with the driver, and the acquisition module is configured to detect the electrical parameters of the wiring group and feedback to the driver;
wherein the acquisition module comprises a sampling circuit and an analog-to-digital converter, an input end of the sampling circuit is electrically connected with an output end of the wiring group, an output end of the sampling circuit is electrically connected with an input end of the analog-to-digital converter, and the output end of the analog-to-digital converter is electrically connected with the driver; and
the wiring group comprises a first wiring and a second wiring, the first wiring comprises a first end and a second end, the second wiring group comprises a third end and a fourth end, the first end and the third end are both electrically connected with the input end of a same first control wire, the second end is electrically connected with the driver, the fourth end is electrically connected with the output end of the sampling circuit.

### Claim 12

A control method, comprising:
generating detection information by detecting the electrical parameters of each wiring group, and feeding back the detection information to the driver by the acquisition module; and
receiving the detection information, calculating and analyzing the detection information and providing a corresponding input voltage to each of the wiring groups by the driver, so that the driving voltage of each data line is equal or the driving voltage of each scan line is equal;
wherein the acquisition module comprises a sampling circuit and an analog-to-digital converter, an input end of the sampling circuit is electrically connected with an output end of the wiring group, an output end of the sampling circuit is electrically connected with an input end of the analog-to-digital converter, and the output end of the analog-to-digital converter is electrically connected with the driver; and
the wiring group comprises a first wiring and a second wiring, the first wiring comprises a first end and a second end, the second wiring group comprises a third end and a fourth end, the first end and the third end are both electrically connected with the input end of a same first control wire, the second end is electrically connected with the driver, the fourth end is electrically connected with the output end of the sampling circuit.

### Claim 13 (depends on 12)

The control method of claim 12, wherein by means of the acquisition module different current data will be feedback to the driver, the driver input corresponding input voltage to different wiring groups after calculation and analysis according to the feedback of the current data.