CN-122029591-A - Display apparatus and control method thereof

CN122029591ACN 122029591 ACN122029591 ACN 122029591ACN-122029591-A

Abstract

The display device includes a first display module including a plurality of first pixels, a second display module including a plurality of second pixels, wherein the second display module is disposed adjacent to the first display module with a boundary line interposed therebetween, and a control unit for controlling the plurality of first pixels including first boundary pixels adjacent to the boundary line and the plurality of second pixels including second boundary pixels adjacent to the boundary line based on image data, wherein the first boundary pixels and each of the second boundary pixels include a first light emitting element and a second light emitting element, the first light emitting element is disposed at a first position closest to the boundary line, the second light emitting element is disposed at a second position farther from the boundary line than the first position, and the control unit reduces luminance of the first light emitting element to be lower than a reference luminance of the first light emitting element and increases luminance of the second light emitting element to be higher than the reference luminance of the second light emitting element, and both reference illuminations are determined based on the image data.

Inventors

JIN ZHENHAO
ZHENG CHENGJUN
ZHENG ZHENHE

Assignees

三星电子株式会社

Dates

Publication Date: 20260512
Application Date: 20241015
Priority Date: 20240105

Claims (15)

1. A display device, comprising: A first display module including a plurality of first pixels; A second display module including a plurality of second pixels and disposed 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 arranged at a first position closest to the boundary line and configured to output light of a first color, an A second light emitting element arranged at a second position farther from the boundary line than the first position and configured to output light of a second color, and The controller is configured to: Reducing the luminance of the first light emitting element below a reference luminance of the first light emitting element determined based on the image data, and The luminance of the second light emitting element is increased to be higher than the reference luminance of the second light emitting element determined based on the image data.
2. The display device of claim 1, wherein, The plurality of first boundary pixels forms a first boundary region, The plurality of first pixels includes a plurality of first inner area pixels arranged in a first inner area adjacent to the first border area, The plurality of second boundary pixels form a second boundary region, an The plurality of second pixels includes a plurality of second inner region pixels arranged in a second inner region adjacent to the second boundary region.
3. The display device of claim 2, wherein, The first display module includes: A first frame region adjacent to the first interior region, and A first driver Integrated Circuit (IC) arranged in the first frame region, and The second display module includes: a second border region adjacent to the second interior region, and And a second driver IC arranged in the second frame region.
4. The display device of claim 2, wherein, The plurality of first boundary pixels and the plurality of first inner region pixels are arranged in a vertical direction with the plurality of first boundary pixels between the boundary line and the plurality of first inner region pixels, and The plurality of second boundary pixels and the plurality of second inner region pixels are arranged in a vertical direction with the plurality of second boundary pixels therebetween.
5. The display device of claim 2, wherein, The controller is configured to: Reducing the luminance of the first light emitting element to a first ratio lower than the reference luminance of the first light emitting element, and Increasing the luminance of the second light emitting element to a second ratio higher than the reference luminance of the second light emitting element, The first ratio is preset based on a first measured luminance of the plurality of first inner area pixels measured by an external measuring device and a second measured luminance of the first light emitting element measured by the external measuring device, and The second ratio is preset based on third measured luminances of the plurality of first inner area pixels measured by the external measuring device and fourth measured luminances of the second light emitting elements measured by the external measuring device.
6. The display device of claim 5, wherein, The first ratio is preset in proportion to the difference between the first measured brightness and the second measured brightness, and The second ratio is preset in proportion to a difference between the third measured luminance and the fourth measured luminance.
7. The display device of claim 1, wherein, The plurality of light emitting elements includes: A third light emitting element arranged at a third position farther from the boundary line than the second position and configured to output light of a third color, The controller is configured to: Increasing the luminance of the third light emitting element to be higher than the reference luminance of the third light emitting element determined based on the image data, and Reducing the luminance of the first light emitting element to a first ratio lower than the reference luminance of the first light emitting element, increasing the luminance of the second light emitting element to a second ratio higher than the reference luminance of the second light emitting element, and increasing the luminance of the third light emitting element to a third ratio higher than the reference luminance of the third light emitting element, and The third ratio is greater than the second ratio.
8. The display device according to claim 1, wherein the plurality of light-emitting elements include: A third light emitting element arranged at a third position closer to the boundary line than the second position and farther from the boundary line than the first position, and configured to output light of a third color, The controller is configured to: Increasing the luminance of the third light emitting element to be higher than the reference luminance of the third light emitting element determined based on the image data, and Reducing the luminance of the first light emitting element to a first ratio lower than the reference luminance of the first light emitting element, increasing the luminance of the second light emitting element to a second ratio higher than the reference luminance of the second light emitting element, and increasing the luminance of the third light emitting element to a third ratio higher than the reference luminance of the third light emitting element, and The second ratio is greater than the third ratio.
9. The display device of claim 1, wherein, The second display module has the same configuration as the first display module, and The second display module has an orientation rotated 180 degrees about a front-to-back axis passing through a center of the second display module with respect to the first display module so as to be arranged end-to-end with the first display module.
10. The display device 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.
11. A method of controlling a display device including a first display module including a plurality of first pixels, a second display module including a plurality of second pixels and disposed adjacent to the first display module with a boundary line therebetween, 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 of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light emitting elements including a first light emitting element disposed at a first position closest to the boundary line and configured to output light of a first color, and a second light emitting element disposed at a second position farther from the boundary line than the first position 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, comprising: Reducing the luminance of the first light emitting element below a reference luminance of the first light emitting element determined based on the image data, and The luminance of the second light emitting element is increased to be higher than the 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 forms a first boundary region, The plurality of first pixels includes a plurality of first inner area pixels arranged in a first inner area adjacent to the first border area, The plurality of second boundary pixels form a second boundary region, an The plurality of second pixels includes a plurality of second inner region pixels arranged in a second inner region adjacent to the second boundary region.
13. The method of claim 12, wherein, A first display module including a first frame region adjacent to the first internal region and a first driver Integrated Circuit (IC) arranged in the first frame region, and The second display module includes a second bezel area adjacent to the second interior area and a second driver IC arranged in the second bezel area.
14. The method of claim 12, wherein, The plurality of first boundary pixels and the plurality of first inner region pixels are arranged in a vertical direction with the plurality of first boundary pixels between the boundary line and the plurality of first inner region pixels, and The plurality of second boundary pixels and the plurality of second inner region pixels are arranged in a vertical direction with the plurality of second boundary pixels therebetween.
15. The method of claim 12, wherein, Reducing the luminance of the first light emitting element below the reference luminance of the first light emitting element and increasing the luminance of the second light emitting element above the reference luminance of the second light emitting element, comprising: Reducing the luminance of the first light emitting element to a first ratio lower than the reference luminance of the first light emitting element, and Increasing the luminance of the second light emitting element to a second ratio higher than the reference luminance of the second light emitting element, The first ratio is preset based on a first measured luminance of the plurality of first inner area pixels measured by an external measuring device and a second measured luminance of the first light emitting element measured by the external measuring device, and The second ratio is preset based on third measured luminances of the plurality of first inner area pixels measured by the external measuring device and fourth measured luminances of the second light emitting elements measured by the external measuring device.

Description

Display apparatus and control method thereof Technical Field The present disclosure relates to a display device that can control luminance of light emitting elements included in pixels of a plurality of display modules, and a control method thereof. Background The display device can be classified into a self-light emitting display in which each pixel itself emits light and a light receiving display in which a separate light source is required. As a representative light receiving display, a Liquid Crystal Display (LCD) includes a backlight unit for providing light from the back surface of a display panel, a liquid crystal layer serving as a switch for passing/blocking the light, and a color filter for changing the provided light to a desired color. Accordingly, LCDs have a complex structure and have limited implementation (e.g., small thickness). On the other hand, a self-lighting (self-luminous) display in which each pixel itself emits light by including a light emitting element for each pixel does not require components such as a backlight unit and a liquid crystal layer, and a color filter can be excluded. Therefore, the self-luminous display can have a simple structure and a high degree of freedom in design. Self-luminous displays can also achieve thin thickness and excellent contrast, brightness and viewing angle. Among the self-luminous displays, a micro Light Emitting Diode (LED) display includes a plurality of micro-sized LEDs. Micro LED displays can provide superior contrast, response time, and energy efficiency compared to LCDs requiring a backlight. In addition, micro LEDs, which are inorganic light emitting elements, are brighter, have better luminous efficiency, and have a longer lifetime than OLEDs, which require a separate encapsulation layer to protect organic materials. Recently, a technology of expanding a display device by tiling a display module is being developed. Disclosure of Invention Technical problem An aspect of the present disclosure is to provide a display device that can compensate for brightness of each of a plurality of light emitting elements included in pixels adjacent to a boundary line between display modules, and a method of controlling the display device. Technical aspects that can be achieved by the present disclosure are not limited to the above-described aspects, and other technical aspects that are not mentioned will be clearly understood from the following description by those of ordinary skill in the art to which the present disclosure pertains. Technical proposal According to an embodiment of the present disclosure, a display device includes a first display module including a plurality of first pixels, a second display module including a plurality of second pixels and disposed 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 of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light emitting elements including a first light emitting element and a second light emitting element, the first light emitting element is disposed at a first position closest to the boundary line and configured to output light of a first color, the second light emitting element is disposed at a second position farther from the boundary line than the first position and configured to output light of a second color, and the controller is configured to determine that the luminance of the first light emitting element is increased to a high luminance based on the first luminance data of the first light emitting element. According to an embodiment of the present disclosure, there is provided a method of controlling a display device including a first display module including a plurality of first pixels, a second display module including a plurality of second pixels and disposed adjacent to the first display module with a boundary line therebetween, 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 of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light emitting elements including a first light emitting element and a second light emitting element, the first light emitting element being disposed at a first position closest to the boundary line and configured to output light of a first color, the second light emitting element being disposed at a second position fart