Display device for vehicle, method of driving the same, and electronic device

Patent metadata

Field	Value
Publication number	US-2026045189-A1
Application number	US-202519030308-A
Country	US
Kind code	A1
Filing date	Jan 17, 2025
Priority date	Aug 8, 2024
Publication date	Feb 12, 2026
Grant date	—

Abstract

A display device for vehicle includes: a display panel including a display area including a first pixel and a second pixel, wherein the first pixel and the second pixel include light blocking layers differently arranged around a light-emitting units; and a display panel driver configured to drive the display panel, wherein the display panel driver is configured to determine line of sight angles between each of blocks of the display area and a line of sight of a driver based on driver information, and to determine a light emission ratio of the first pixel in each of the blocks and a light emission ratio of the second pixel in each of the blocks based on the line of sight angles for the blocks.

First claim

1 . A display device for vehicle, comprising:
a display panel including a display area including a first pixel and a second pixel, wherein the first pixel and the second pixel include light blocking layers differently arranged around a light-emitting unit; and a display panel driver configured to drive the display panel, wherein the display panel driver is configured to determine line of sight angles between each of blocks of the display area and a line of sight of a driver based on driver information, and to determine a light emission ratio of the first pixel in each of the blocks and a light emission ratio of the second pixel in each of the blocks based on the line of sight angles for the blocks.

2 . The display device for vehicle according to claim 1 , wherein the light blocking layer is arranged around the light emitting unit of the second pixel to have a line of sight angle narrower than that of the first pixel, and
wherein the driver information includes at least one of a position an eye of the driver, a position of a driver's seat, an angle of a side mirror, or an angle of a rearview mirror.

3 . The display device for vehicle according to claim 1 , wherein the light emission ratio of the first pixel of one of the blocks is configured to decrease as the line of sight angle between the one of the blocks and the line of sight of the driver increases.

4 . The display device for vehicle according to claim 1 , wherein the light emission ratio of the first pixel and the light emission ratio of the second pixel are configured to gradually change at a boundary portion of adjacent blocks among the blocks.

5 . The display device for vehicle according to claim 1 , further comprising:
a memory device configured to store a light emission ratio lookup table including the light emission ratio of the first pixel according to the line of sight angle and the light emission ratio of the second pixel according to the line of sight angle, wherein the light emission ratio of the first pixel and the light emission ratio of the second pixel are determined using the light emission ratio lookup table.

6 . The display device for vehicle according to claim 5 , wherein the display panel driver is configured to determine an entire luminance ratio according to the line of sight angle based on the light emission ratio lookup table, a luminance ratio of the first pixel according to the line of sight angle, and a luminance ratio of the second pixel according to the line of sight angle, and to update the light emission ratio lookup table based on the entire luminance ratio according to the line of sight angle.

7 . The display device for vehicle according to claim 6 , wherein the entire luminance ratio according to the line of sight angle is a value obtained by adding a product of the light emission ratio of the first pixel according to the line of sight angle and the luminance ratio of the first pixel according to the line of sight angle and a product of the light emission ratio of the second pixel according to the line of sight angle and the luminance ratio of the second pixel according to the line of sight angle.

8 . The display device for vehicle according to claim 6 , wherein the display panel driver is configured to update the light emission ratio lookup table based on the entire luminance ratio according to the line of sight angle being higher than a first reference luminance ratio according to the line of sight angle or lower than a second reference luminance ratio according to the line of sight angle.

9 . The display device for vehicle according to claim 5 , wherein the display panel driver is configured to update the light emission ratio lookup table based on illuminance information.

10 . The display device for vehicle according to claim 9 , wherein the display panel driver is configured to update the light emission ratio lookup table by increasing the light emission ratio of the first pixel according to the line of sight angle as an illuminance increases.

11 . The display device for vehicle according to claim 9 , wherein the display panel driver is configured to update the light emission ratio lookup table by increasing a maximum value or a minimum value of the light emission ratio of the first pixel according to the line of sight angle as an illuminance increases.

12 . A method of driving a display device for vehicle including a display area including a first pixel and a second pixel, wherein the first pixel and the second pixel include light blocking layers differently arranged around a light-emitting unit, the method comprising:
determining line of sight angles between each of blocks of the display area and a line of sight of a driver based on driver information; and determining a light emission ratio of the first pixel in each of the blocks and a light emission ratio of the second pixel in each of the blocks based on the line of sight angles for the blocks.

13 . The method according to claim 12 , wherein the driver information includes at least one of a position an eye of the driver, a position of a driver's seat, an angle of a side mirror, or an angle of a rearview mirror.

14 . The method according to claim 12 , wherein the light emission ratio of the first pixel of one of the blocks decreases as the line of sight angle between the one of the blocks and the line of sight of the driver increases.

15 . The method according to claim 12 , wherein the light emission ratio of the first pixel and the light emission ratio of the second pixel gradually change at a boundary portion of adjacent blocks among the blocks.

16 . The method according to claim 12 , wherein the light emission ratio of the first pixel and the light emission ratio of the second pixel are determined using a light emission ratio lookup table including the light emission ratio of the first pixel according to the line of sight angle and the light emission ratio of the second pixel according to the line of sight angle, and
wherein the method further comprises updating the light emission ratio lookup table.

17 . The method according to claim 16 , wherein updating the light emission ratio lookup table comprises:
determining an entire luminance ratio according to the line of sight angle based on the light emission ratio lookup table, a luminance ratio of the first pixel according to the line of sight angle, and a luminance ratio of the second pixel according to the line of sight angle; and updating the light emission ratio lookup table based on the entire luminance ratio according to the line of sight angle.

18 . The method according to claim 17 , wherein the light emission ratio lookup table is updated based on the entire luminance ratio according to the line of sight angle being higher than a first reference luminance ratio according to the line of sight angle or lower than a second reference luminance ratio according to the line of sight angle.

19 . The method according to claim 16 , wherein updating the light emission ratio lookup table comprises updating the light emission ratio lookup table based on illuminance information.

20 . An electronic device comprising:
a processor configured to provide input image data; and a display device configured to display an image based on the input image data, wherein the display device comprises: a display panel including a display area where a first pixel and a second pixel, wherein the first pixel and the second pixel include light blocking layers differently arranged around a light-emitting unit; and

Assignees

• Samsung Display Co Ltd

Inventors

• Yoo Gi Na
• Kim Hyo Min
• Kim Ji Young

Classifications

• B60K2360/349

  Adjustment of brightness · CPC title

• B60K35/22

  Display screens · CPC title

• B60K35/81 Primary

  for controlling displays · CPC title

• G09G2380/10

  Automotive applications · CPC title

• G09G2320/0233

  Improving the luminance or brightness uniformity across the screen · CPC title