Image display apparatus

Patent metadata

Field	Value
Publication number	US-12475863-B2
Application number	US-202218860343-A
Country	US
Kind code	B2
Filing date	Jun 7, 2022
Priority date	Apr 27, 2022
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

An image display apparatus is disclosed. The image display device according to an embodiment of the present disclosure includes: a timing controller to output a differential signal; a plurality of data drivers to output a respective data signal based on the differential signal; a panel to output an image based on the respective data signal; and a temperature detector to detect a temperature of or around the panel, wherein the timing controller is configured to: in response to the temperature being a first temperature, output a first differential signal whose level increases based on a first rising slope; and in response to the temperature being a second temperature higher than the first temperature, output a second differential signal whose level increases based on a second rising slope greater than the first rising slope. Accordingly, it is possible to reduce panel noise based on a temperature change and electromagnetic noise.

First claim

What is claimed is:

1 . An image display apparatus comprising:
a timing controller configured to output a differential signal; a plurality of data drivers configured to output a respective data signal based on the differential signal from the timing controller; a panel configured to output an image based on the respective data signal from the plurality of data drivers; and a temperature detector configured to detect a temperature of or around the panel, wherein the timing controller is configured to: in response to the temperature detected by the temperature detector being a first temperature, output a first differential signal whose level increases based on a first rising slope; and in response to the temperature detected by the temperature detector being a second temperature higher than the first temperature, output a second differential signal whose level increases based on a second rising slope greater than the first rising slope.

2 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature, output the first differential signal whose level increases based on the first rising slope and then maintains a first high level; and in response to the temperature detected by the temperature detector being the second temperature, output the second differential signal whose level increases based on the second rising slope and then maintains the first high level.

3 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature, output the first differential signal whose level increases based on the first rising slope and then maintains a first high level; and in response to the temperature detected by the temperature detector being the second temperature, output the second differential signal whose level increases based on the second rising slope and then maintains a second high level higher than the first high level.

4 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature, output the first differential signal whose level increases based on a first peak level and the first rising slope; and in response to the temperature detected by the temperature detector being the second temperature, output the second differential signal whose level increases based on a second peak level greater than the first peak level and the second rising slope.

5 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature, output the first differential signal whose level increases based on a first peak level and the first rising slope and then maintains a first high level; and in response to the temperature detected by the temperature detector being the second temperature, output the second differential signal whose level increases based on a second peak level greater than the first peak level and the second rising slope and then maintains the first high level.

6 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature, output the first differential signal whose level increases based on a first peak level and the first rising slope and then maintains a first high level; and in response to the temperature detected by the temperature detector being the second temperature, output the second differential signal whose level increases based on a second peak level greater than the first peak level and the second rising slope and then maintains a second high level higher than the first high level.

7 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature, output the first differential signal whose level increases based on a first peak level and the first rising slope and then maintains a first high level; and in response to the temperature detected by the temperature detector being the second temperature, output the second differential signal whose level increases based on the first peak level and the second rising slope and then maintains the first high level.

8 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature, output the first differential signal whose level increases based on a first peak level and the first rising slope and then maintains a first high level; and in response to the temperature detected by the temperature detector being the second temperature, output the second differential signal whose level increases based on the first peak level and the second rising slope and then maintains a second high level higher than the first high level.

9 . The image display apparatus of claim 1 , wherein the timing controller is configured to:
in response to the temperature detected by the temperature detector being the first temperature less than or equal to a first reference temperature, output the first differential signal whose level increases based on a first rising slope; and in response to the temperature detected by the temperature detector being the second temperature greater than or equal to a second reference temperature higher than the first reference temperature, output the second differential signal whose level increases based on a second rising slope greater than the first rising slope.

10 . The image display apparatus of claim 9 , wherein, in response to the temperature detected by the temperature detector being greater than or equal to the second reference temperature, the timing controller is configured to output the second differential signal having a rising slope which increases as the detected temperature increases.

11 . The image display apparatus of claim 9 , wherein, in response to the temperature detected by the temperature detector being greater than or equal to the second reference temperature, the timing controller is configured to output the second differential signal having a swing level which increases as the detected temperature increases.

12 . The image display apparatus of claim 1 , wherein the timing controller is configured to output a differential signal having a rising slope which increases as the temperature detected by the temperature detector increases.

13 . The image display apparatus of claim 1 , wherein the timing controller is configured to output a differential signal having a swing level which increases as the temperature detected by the temperature detector increases.

14 . The image display apparatus of claim 1 , wherein the plurality of data drivers are configured to:
in response to the temperature detected by the temperature detector being the first temperature, output respective data signals based on the first differential signal having the first rising slope; and in response to the temperature detected by the temperature detector being the second temperature, output respective data signals based on the second differential signal having the second rising slope.

15 . The image display apparatus of claim 1 , further comprising a signal processing device configur

Assignees

• Lg Electronics Inc

Inventors

• Baek Sangwon

Classifications

• G09G2354/00

  Aspects of interface with display user · CPC title

• G09G2330/06

  Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation · CPC title

• G09G2320/041

  Temperature compensation · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title

• G09G2320/02

  Improving the quality of display appearance · CPC title