# US 12,603,046 B2 · Electronic apparatus and driving circuit

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- Number: US 12,603,046 B2
- Document ID: US12603046B2
- Status: Granted
- Kind: B2
- Application number: 18/800,138
- Filed: 2024-08-12
- Published: 2025-03-06
- Granted: 2026-04-14
- Earliest claimed: 2023-08-31
- Assignees: Novatek Microelectronics Corp.
- Applicants: Novatek Microelectronics Corp.
- Inventors: Kun-Zheng Lin; Wei-Lun Shih
- Web page: https://patentgrep.com/patent/US12603046B2

## CPC

- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G 2310/06: Details of flat display driving waveforms
- G09G 2310/08: Details of timing specific for flat panels, other than clock recovery
- G09G 2320/0233: Improving the luminance or brightness uniformity across the screen
- 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)

## Abstract

An electronic apparatus including a display panel and a driving circuit is provided. The display panel includes a plurality of display units. Each of the display units includes a light-emitting element. The driving circuit is coupled to the display panel. The driving circuit is configured to output a scan signal and a reset signal. When a reset interval of the scan signal is transmitted in a non-display area of the display panel, the driving circuit compensates the reset signal and outputs the compensated reset signal to reset the light-emitting element.

## Claims

### Claim 1

A driving circuit, configured to drive a display panel, the driving circuit comprising:
a voltage generating circuit, coupled to the display panel and configured to output a reset signal; and
a control circuit, coupled to the display panel and configured to output a scan signal,
wherein when a reset interval of the scan signal is transmitted in a non-display area of the display panel, the control circuit compensates the reset signal, and the voltage generating circuit outputs the compensated reset signal to reset a light-emitting diode in the display panel.

### Claim 2 (depends on 1)

The driving circuit according to claim 1, wherein the scan signal comprises a plurality of reset intervals, and the control circuit compensates the reset signal according to positions of the reset intervals.

### Claim 3 (depends on 2)

The driving circuit according to claim 2, wherein the compensated reset signal comprises a plurality of compensation intervals, and the control circuit determines positions of the compensation intervals according to the positions of the reset intervals.

### Claim 4 (depends on 3)

The driving circuit according to claim 3, wherein the positions of the compensation intervals correspond to the positions of the reset intervals.

### Claim 5 (depends on 3)

The driving circuit according to claim 3, wherein the control circuit determines a width of a corresponding compensation interval according to a width of each of the reset intervals.

### Claim 6 (depends on 5)

The driving circuit according to claim 5, wherein the control circuit further determines the width of the corresponding compensation interval according to a width of the non-display area of the display panel.

### Claim 7 (depends on 3)

The driving circuit according to claim 3, wherein a width of each of the reset intervals corresponds to a plurality of signal lines of the display panel, and the compensated reset signal is a step signal in the compensation intervals, wherein a number of steps of the step signal is equal to a number of the signal lines.

### Claim 8 (depends on 1)

The driving circuit according to claim 1, wherein the control circuit compensates the reset signal when the reset interval of the scan signal enters the non-display area of the display panel.

### Claim 9 (depends on 1)

The driving circuit according to claim 1, wherein the control circuit compensates the reset signal when the reset interval of the scan signal leaves the non-display area of the display panel.

### Claim 10 (depends on 1)

The driving circuit according to claim 1, wherein the display panel comprises a plurality of scan lines and a plurality of display units, and each of the display units comprises:
the light-emitting diode has a first terminal and a second terminal, wherein the first terminal of the light-emitting diode is coupled to the reset circuit, and the second terminal of the light-emitting diode is coupled to a first voltage; and
a reset circuit has a first terminal, a second terminal, and a control terminal, wherein the first terminal of the reset circuit is coupled to the first terminal of the light-emitting diode, the second terminal of the reset circuit is coupled to the reset signal, and the control terminal of the reset circuit is coupled to a corresponding scan line,
wherein the reset signal resets the first terminal of the light-emitting diode when the reset circuit is turned on by the scan signal.

### Claim 11

A driving circuit, configured to drive a display panel, the driving circuit comprising:
a voltage generating circuit, coupled to the display panel and configured to output a reset signal; and
a control circuit, coupled to the display panel and configured to output a scan signal,
wherein when a reset interval of the scan signal is transmitted in a non-display area of the display panel, the control circuit compensates the reset signal, and the voltage generating circuit outputs the compensated reset signal to reset a light-emitting diode in the display panel, wherein the non-display area comprises a porch area or a blanking area of the display panel.
