KR-102960794-B1 - GATE DRIVING CIRCUIT AND DISPLAY DEVICE

KR102960794B1KR 102960794 B1KR102960794 B1KR 102960794B1KR-102960794-B1

Abstract

Embodiments of the present invention relate to a gate driving circuit and a display device. By placing a low-resolution area with high transmittance in a part of an active area and placing an optical sensor on the opposite side of the surface where an image is displayed in the area, a display device is provided capable of displaying an image through the area and sensing by an optical sensor. Furthermore, by driving the low-resolution area and the surrounding area, which is a high-resolution area, with separate gate lines, a method is provided to facilitate image compensation for the low-resolution area and reduce the difference in image quality between the low-resolution area and the surrounding area.

Inventors

이종혁
이동향

Assignees

엘지디스플레이 주식회사

Dates

Publication Date: 20260507
Application Date: 20250623

Claims (20)

An active area comprising a first area having a first resolution, and a second area located on one side of the first area and having a second resolution higher than the first resolution; A plurality of first gate lines electrically connected to a circuit element disposed in a subpixel of the first region; A plurality of second gate lines that are insulated from a circuit element disposed in a subpixel of the first region and electrically connected to a circuit element disposed in a subpixel of at least one of the second regions; A first gate driving circuit for driving the plurality of first gate lines; and It includes a second gate driving circuit that drives the plurality of second gate lines, and A display device in which a plurality of first gate lines are extended in a first direction and directly connected to a first gate driving circuit located on one side of a second region, and a plurality of second gate lines are extended in the first direction and directly connected to a second gate driving circuit located on one side of a second region.
In paragraph 1, A display device comprising a third region located on the other side of the first region and having the second resolution.
In paragraph 2, The above plurality of first gate lines are insulated from circuit elements disposed in the subpixels of the third region, and The above plurality of second gate lines are electrically connected to a circuit element disposed in a subpixel of the third region in a display device.
In paragraph 2, A display device in which a portion of the first gate line overlaps with at least one of the second region and the third region.
In paragraph 2, A part of the second gate line is a display device that overlaps with the first region.
In paragraph 2, A display device in which at least one subpixel among the subpixels of the first region, the second region, and the third region is superimposed with the first gate line or the second gate line.
In paragraph 2, A display device in which the largest gap among two adjacent first gate lines among the plurality of first gate lines is larger than the largest gap among two adjacent second gate lines among the plurality of second gate lines.
In paragraph 2, The above second gate line is a display device electrically connected to circuit elements placed in the subpixels of the above second region and the above third region.
In paragraph 2, It further includes a third gate line disposed in an area excluding the first area and the second area, and The above third gate line is a display device electrically connected to a circuit element placed in a subpixel of the above third region.
In Paragraph 9, The above third gate line is a display device positioned separately from the above second gate line.
In Paragraph 9, The above second gate line and third gate line are a display device that does not overlap with the above first region.
In paragraph 8, The second gate line is a display device placed in an area excluding the first area and the third area.
In paragraph 1 A display device that overlaps with an optical sensor, wherein the first region includes a region where the subpixel is placed and a transparent region where the subpixel is not placed.
In paragraph 1, A display device comprising a fourth region located below the first region and having the second resolution.
In Paragraph 14, The plurality of second gate lines are electrically connected to circuit elements disposed in the subpixels of the fourth region, and A display device in which the above-mentioned fourth region and the above-mentioned plurality of first gate lines do not overlap.
A first gate driving circuit for driving a plurality of first gate lines electrically connected to a circuit element disposed in a subpixel of a first region having a first resolution; and A second gate driving circuit that is electrically connected to a circuit element disposed in a subpixel of a second region having a second resolution higher than the first resolution, and drives a plurality of second gate lines disposed in the same first direction as the first gate line. Includes, A gate driving circuit in which a plurality of first gate lines are extended in the first direction and directly connected to a first gate driving circuit located on one side of the second region, and a plurality of second gate lines are extended in the first direction and directly connected to a second gate driving circuit located on one side of the second region.
In Paragraph 16 The second gate driving circuit is a gate driving circuit that is electrically isolated from the circuit element placed in the subpixel of the first region.
In paragraph 16 The second gate driving circuit is a gate driving circuit that drives the second gate line, which is located on the other side of the first region and is electrically connected to a circuit element placed in a subpixel of the third region having the second resolution.
In Paragraph 16, A gate driving circuit comprising a third gate driving circuit that drives a third gate line electrically connected to a circuit element disposed in a subpixel of a third region having the second resolution, located on the other side of the first region.
In Paragraph 19, The third gate driving circuit is a gate driving circuit that is electrically isolated from a circuit element placed in a subpixel of the first region or the second region.

Description

Gate Driving Circuit and Display Device Embodiments of the present invention relate to a gate driving circuit and a display device. As the information society develops, the demand for display devices that display images is increasing, and various types of display devices, such as liquid crystal displays and organic light-emitting displays, are being utilized. Such a display device may include a display panel having a plurality of gate lines, a plurality of data lines, and a plurality of subpixels arranged thereon, and various driving circuits for driving the gate lines, data lines, etc. Additionally, the display panel may include an active area in which a plurality of subpixels are arranged and an image is displayed, and a non-active area located outside the active area in which signal lines, etc. are arranged. Here, depending on the type, a camera sensor or proximity sensor, etc. (hereinafter also referred to as an "optical sensor") may be placed in a non-active area of the display device. However, when an optical sensor is placed in a non-active area in this manner, there is a limit to reducing the area occupied by the non-active area in the display panel. Therefore, attempts are being made to place optical sensors required for display devices in a portion of the active area of the display panel; however, there is a problem in that placing optical sensors within the active area may degrade the quality of the image displayed through the active area. FIG. 1 is a diagram showing the schematic configuration of a display device according to embodiments of the present invention. FIG. 2 is a diagram showing an example of a circuit structure and driving timing of a subpixel included in a display device according to embodiments of the present invention. FIG. 3 is a diagram showing an example of a structure in which a subpixel and a gate line are arranged in an active area when an optical sensor is arranged in an active area of a display device according to embodiments of the present invention. FIGS. 4 and FIGS. 5 are drawings illustrating examples of a structure in which a gate line driving a subpixel of a first region and a subpixel of a region other than the first region is arranged in an active region of a display device according to embodiments of the present invention. FIGS. 6 and 7 are drawings showing another example of a structure in which a gate line driving a subpixel of a first region and a subpixel of a region other than the first region is arranged in an active region of a display device according to embodiments of the present invention. Figure 8 is a drawing showing an example of the specific structure of CASE4 illustrated in Figure 7. FIGS. 9a to 9c are drawings illustrating examples of a subpixel arrangement structure in a first region of an active area of a display device according to embodiments of the present invention. Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary drawings. In assigning reference numerals to the components of each drawing, the same components may have the same reference numeral as much as possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description may be omitted. Where terms such as "comprising," "having," or "consisting of" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it may include a plural unless there is a special explicit description otherwise. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the present invention. These terms are used merely to distinguish the components from other components, and the essence, order, sequence, or number of the components are not limited by such terms. In describing the positional relationship of components, where it is stated that two or more components are "connected," "combined," or "joined," it should be understood that while the two or more components may be directly "connected," "combined," or "joined," they may also be "connected," "combined," or "joined" with other components "intervened." Here, the other components may be included in one or more of the two or more components that are "connected," "combined," or "joined" with one another. In describing the temporal or flow relationships of components, for example, when the temporal or flow-related relationships are described using "after," "following," "next," "before," etc., cases that are not continuous may be included unless "immediately" or "directly" is used. Meanwhile, where numerical values or corresponding information regarding a component (e.g., levels, etc.) are mentioned, even without separate explicit notation, the numerical values or corresponding info