US-12620347-B2 - Display apparatus and method for controlling the same

US12620347B2US 12620347 B2US12620347 B2US 12620347B2US-12620347-B2

Abstract

A display apparatus including first and second display modules arranged adjacently with a boundary line therebetween; and a controller configured to control first pixels of the first display module and second pixels of the second display module based on image data, wherein the first pixels include first boundary pixels adjacent to the boundary line, the second pixels include second boundary pixels adjacent to the boundary line, each first boundary pixel and each second boundary pixel includes a plurality of light-emitting elements including a first light-emitting element at a first location to output light of a first color, and a second light-emitting element at a second location further from the boundary line to output light of a second color, and the controller is configured to adjust luminances of the first and second light-emitting elements according to reference luminances of the first and second light-emitting element determined based on the image data.

Inventors

Jinho Kim
Seongjoon Jeong
Jinhyuk JUNG

Assignees

SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20241028
Priority Date: 20240105

Claims (15)

1 . A display apparatus, comprising: a first display module including a plurality of first pixels; a second display module including a plurality of second pixels, and arranged adjacent to the first display module with a boundary line between the first display module and the second display module; and a controller configured to control the plurality of first pixels and the plurality of second pixels based on image data, wherein the plurality of first pixels includes a plurality of first boundary pixels adjacent to the boundary line, the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line, each first boundary pixel of the plurality of first boundary pixels and each second boundary pixel of the plurality of second boundary pixels includes a plurality of light-emitting elements including: a first light-emitting element disposed at a first location closest to the boundary line and configured to output light of a first color, and a second light-emitting element disposed at a second location that is further from the boundary line than the first location and configured to output light of a second color, and the controller is configured to: reduce a luminance of the first light-emitting element to be lower than a reference luminance of the first light-emitting element determined based on the image data, and increase a luminance of the second light-emitting element to be higher than a reference luminance of the second light-emitting element determined based on the image data.
2 . The display apparatus of claim 1 , wherein the plurality of light-emitting elements includes: a third light-emitting element disposed at a third location that is further from the boundary line than the second location and configured to output light of a third color, the controller is configured to: increase a luminance of the third light-emitting element to be higher than a reference luminance of the third light-emitting element determined based on the image data, and reduce the luminance of the first light-emitting element to be lower than the reference luminance of the first light-emitting element by a first ratio, increase the luminance of the second light-emitting element to be higher than the reference luminance of the second light-emitting element by a second ratio, and increase the luminance of the third light-emitting element to be higher than the reference luminance of the third light-emitting element by a third ratio, and the third ratio is greater than the second ratio.
3 . The display apparatus of claim 1 , wherein the plurality of light-emitting elements includes: a third light-emitting element disposed at a third location that is closer to the boundary line than the second location and further from the boundary line than the first location and configured to output light of a third color, the controller is configured to: increase a luminance of the third light-emitting element to be higher than a reference luminance of the third light-emitting element determined based on the image data, and reduce the luminance of the first light-emitting element to be lower than the reference luminance of the first light-emitting element by a first ratio, increase the luminance of the second light-emitting element to be higher than the reference luminance of the second light-emitting element by a second ratio, and increase the luminance of the third light-emitting element to be higher than the reference luminance of the third light-emitting element by a third ratio, and the second ratio is greater than the third ratio.
4 . The display apparatus of claim 1 , wherein the second display module has a same configuration as the first display module, and the second display module has an orientation, relative to the first display module, that is rotated 180 degrees about a front to back axis through a center of the second display module, so as to be arranged end to end with the first display module.
5 . The display apparatus of claim 1 , wherein the first light-emitting element is a blue light-emitting element, and the second light-emitting element is a green light-emitting element or a red light-emitting element.
6 . The display apparatus of claim 1 , wherein the plurality of first boundary pixels form a first boundary area, the plurality of first pixels includes a plurality of first internal area pixels disposed in a first internal area adjacent to the first boundary area, the plurality of second boundary pixels form a second boundary area, and the plurality of second pixels includes a plurality of second internal area pixels disposed in a second internal area adjacent to the second boundary area.
7 . The display apparatus of claim 6 , wherein the first display module includes: a first bezel area adjacent to the first internal area, and a first driver integrated circuit (IC) disposed in the first bezel area, and the second display module includes: a second bezel area adjacent to the second internal area, and a second driver IC disposed in the second bezel area.
8 . The display apparatus of claim 6 , wherein the plurality of first boundary pixels and the plurality of first internal area pixels are arranged in a vertical direction with the plurality of first boundary pixels between the boundary line and the plurality of first internal area pixels, and the plurality of second boundary pixels and the plurality of second internal area pixels are arranged in a vertical direction with the plurality of second boundary pixels between the boundary line and the plurality of second internal area pixels.
9 . The display apparatus of claim 6 , wherein the controller is configured to: reduce the luminance of the first light-emitting element to be lower than the reference luminance of the first light-emitting element by a first ratio, and increase the luminance of the second light-emitting element to be higher than the reference luminance of the second light-emitting element by a second ratio, the first ratio is preset based on a first measured luminance of the plurality of first internal area pixels measured by an external measurement device and a second measured luminance of the first light-emitting element measured by the external measurement device, and the second ratio is preset based on a third measured luminance of the plurality of first internal area pixels measured by the external measurement device and a fourth measured luminance of the second light-emitting element measured by the external measurement device.
10 . The display apparatus of claim 9 , wherein the first ratio is preset in proportion to a difference between the first measured luminance and the second measured luminance, and the second ratio is preset in proportion to a difference between the third measured luminance and the fourth measured luminance.
11 . A method of controlling a display apparatus including a first display module including a plurality of first pixels, a second display module including a plurality of second pixels, and arranged adjacent to the first display module with a boundary line between the first display module and the second display module, wherein the plurality of first pixels includes a plurality of first boundary pixels adjacent to the boundary line, the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line, and wherein each first boundary pixel of the plurality of first boundary pixels and each second boundary pixel of the plurality of second boundary pixels includes a plurality of light-emitting elements including a first light-emitting element disposed at a first location closest to the boundary line and configured to output light of a first color, and a second light-emitting element disposed at a second location that is further from the boundary line than the first location and configured to output light of a second color, the method comprising: controlling the plurality of first pixels and the plurality of second pixels based on image data, including reducing a luminance of the first light-emitting element to be lower than a reference luminance of the first light-emitting element determined based on the image data, and increasing a luminance of the second light-emitting element to be higher than a reference luminance of the second light-emitting element determined based on the image data.
12 . The method of claim 11 , wherein the plurality of first boundary pixels form a first boundary area, the plurality of first pixels includes a plurality of first internal area pixels disposed in a first internal area adjacent to the first boundary area, the plurality of second boundary pixels form a second boundary area, and the plurality of second pixels includes a plurality of second internal area pixels disposed in a second internal area adjacent to the second boundary area.
13 . The method of claim 12 , wherein the first display module includes a first bezel area adjacent to the first internal area, and a first driver integrated circuit (IC) disposed in the first bezel area, and the second display module includes a second bezel area adjacent to the second internal area, and a second driver IC disposed in the second bezel area.
14 . The method of claim 12 , wherein the plurality of first boundary pixels and the plurality of first internal area pixels are arranged in a vertical direction with the plurality of first boundary pixels between the boundary line and the plurality of first internal area pixels, and the plurality of second boundary pixels and the plurality of second internal area pixels are arranged in a vertical direction with the plurality of second boundary pixels between the boundary line and the plurality of second internal area pixels.
15 . The method of claim 12 , wherein the reducing of the luminance of the first light-emitting element to be lower than the reference luminance of the first light-emitting element and the increasing of the luminance of the second light-emitting element to be higher than the reference luminance of the second light-emitting element includes: reducing the luminance of the first light-emitting element to be lower than the reference luminance of the first light-emitting element by a first ratio, and increasing the luminance of the second light-emitting element to be higher than the reference luminance of the second light-emitting element by a second ratio, the first ratio is preset based on a first measured luminance of the plurality of first internal area pixels measured by an external measurement device and a second measured luminance of the first light-emitting element measured by the external measurement device, and the second ratio is preset based on a third measured luminance of the plurality of first internal area pixels measured by the external measurement device and a fourth measured luminance of the second light-emitting element measured by the external measurement device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation application, claiming priority under § 365 (c), of International Application No. PCT/KR2024/015583, filed on Oct. 15, 2024, which is based on and claims the benefit of Korean Patent Application Number 10-2024-0002519, filed on Jan. 5, 2024, and Korean Patent Application Number 10-2024-0098218, filed on Jul. 24, 2024, the disclosures of which are incorporated by reference herein in their entireties. TECHNICAL FIELD The disclosure relates to a display apparatus that may control a luminance of light-emitting elements included in pixels of a plurality of display modules, and a method for controlling the same. BACKGROUND ART Display apparatuses may be classified into self-luminous displays where each pixel emits light by itself, and light-receiving displays that require a separate light source. A Liquid Crystal Display (LCD), which is a representative light-receiving display, includes a backlight unit for supplying light from the rear of a display panel, a liquid crystal layer acting as a switch to pass/block light, and a color filter for changing the supplied light to a desired color. Accordingly, the LCD has a complex structure and has a limited implementation (e.g., small thickness). On the other hand, a self-luminous display in which each pixel emits light by itself by including a light-emitting element for each pixel does not require components such as a backlight unit and a liquid crystal layer, and may exclude a color filter. Accordingly, the self-luminous display may have a simple structure and a high degree of design freedom. The self-luminous display may also realize thin thickness as well as excellent contrast ratio, luminance and viewing angle. Among self-luminous displays, a micro Light-emitting Diode (LED) display includes a plurality of LEDs that are micro-sized. Compared to LCDs requiring backlight, the micro LED displays may provide superior contrast, response time, and energy efficiency. In addition, micro LEDs, which are inorganic light-emitting elements, are brighter, have superior luminous efficiency, and have a longer lifespan than OLEDs requiring a separate encapsulation layer to protect organic materials. Recently, a technology to enlarge a display apparatus by tiling display modules is being developed. DISCLOSURE Technical Problem It is an aspect of the disclosure to provide a display apparatus that may compensate for a luminance of each of a plurality of light-emitting elements included in pixels adjacent to a boundary line between display modules, and a method for controlling the display apparatus. Technical aspects that may be achieved by the disclosure are not limited to the above-mentioned aspects, and other technical aspects not mentioned will be clearly understood by one of ordinary skill in the technical art to which the disclosure belongs from the following description. Technical Solution Aspects of embodiments of the disclosure will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. According to an embodiment of the disclosure, a display apparatus includes a first display module including a plurality of first pixels; a second display module including a plurality of second pixels, and arranged adjacent to the first display module with a boundary line between the first display module and the second display module; and a controller configured to control the plurality of first pixels and the plurality of second pixels based on image data, wherein the plurality of first pixels includes a plurality of first boundary pixels adjacent to the boundary line, the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line, each first boundary pixel of the plurality of first boundary pixels and each second boundary pixel of the plurality of second boundary pixels includes a plurality of light-emitting elements including a first light-emitting element disposed at a first location closest to the boundary line and configured to output light of a first color, and a second light-emitting element disposed at a second location that is further from the boundary line than the first location and configured to output light of a second color, and the controller is configured to reduce a luminance of the first light-emitting element to be lower than a reference luminance of the first light-emitting element determined based on the image data, and increase a luminance of the second light-emitting element to be higher than a reference luminance of the second light-emitting element determined based on the image data. According to an embodiment of the disclosure, the plurality of first boundary pixels may form a first boundary area. The plurality of first pixels may include a plurality of first internal area pixels disposed in a first internal area adjacent to the first boundar