KR-20260064271-A - DISPLAY APPARATUS

Abstract

A display device according to the embodiments of the present specification may include a substrate, a plurality of light-emitting elements disposed on the substrate and located in a display area, a plurality of column lines electrically connected to a first electrode of each of the plurality of light-emitting elements, a plurality of row lines electrically connected to a second electrode of each of the plurality of light-emitting elements, a touch sensor disposed in a metal layer identical to the plurality of row lines, an overcoat layer disposed on the plurality of light-emitting elements, the plurality of row lines, and the touch sensor, and a plurality of drivers disposed on the substrate, driving the plurality of light-emitting elements and driving or sensing the touch sensor.

Inventors

• 김태윤
• 이득수

Assignees

• 엘지디스플레이 주식회사

Dates

Publication Date

20260507

Application Date

20241031

Claims (20)

1. Substrate; A plurality of light-emitting elements disposed on the above substrate and located in a display area; A plurality of heat lines electrically connected to the first electrode of each of the plurality of light-emitting elements; A plurality of row lines electrically connected to the second electrode of each of the plurality of light-emitting elements; A touch sensor disposed within the same metal layer as the above plurality of row lines; An overcoat layer disposed on the plurality of light-emitting elements, the plurality of row lines, and the touch sensor; and A display device comprising a plurality of drivers disposed on the substrate, which drive the plurality of light-emitting elements and drive or sense the touch sensor.
2. In paragraph 1, The above plurality of drivers is a display device placed in the above display area.
3. In paragraph 1, A display device wherein the plurality of drivers are disposed between the substrate and the plurality of light-emitting elements.
4. In paragraph 1, An adhesive layer disposed on the above-mentioned overcoat layer; and A display device further comprising a cover member disposed on the adhesive layer.
5. In paragraph 1, Each of the above plurality of row lines overlaps with two or more of the above plurality of light-emitting elements, and A display device in which the touch sensor above does not overlap with the plurality of light-emitting elements.
6. In paragraph 1, The above display area includes a plurality of unit driving areas corresponding to the plurality of drivers, and the plurality of unit driving areas include a first unit driving area corresponding to a first driver among the plurality of drivers. The above first unit driving area is, Two or more row lines among the plurality of row lines electrically connected to the first driver; and It includes two or more heat lines among the plurality of heat lines electrically connected to the first driver, and Each of the above two or more column lines is electrically connected to the first electrode of two or more light-emitting elements arranged in the same column among the plurality of light-emitting elements, and A display device in which each of the above two or more row lines is electrically connected to a second electrode of two or more light-emitting elements arranged in the same row among the plurality of light-emitting elements.
7. In paragraph 6, The above touch sensor includes the plurality of touch electrodes, and Each of the above plurality of touch electrodes includes a plurality of sub-touch electrodes, and The first unit driving area further includes two or more sub-touch electrodes among the plurality of sub-touch electrodes that are electrically connected to the first driver, and A display device in which, in the first unit driving area, the two or more sub-touch electrodes and the two or more row lines are alternately arranged.
8. In Paragraph 7, A display device in which the length of each of the two or more sub-touch electrodes corresponds to the length of each of the two or more row lines.
9. In Paragraph 7, It further includes two or more sub-touch lines that electrically connect each of the two or more sub-touch electrodes to the first driver, and A display device in which, within the first unit driving area, each of the two or more sub-touch lines is electrically connected to one of the two or more sub-touch electrodes.
10. In Paragraph 7, It further includes one sub-touch line that electrically connects the two or more sub-touch electrodes to the first driver, and A display device in which, within the first unit driving area, the one sub-touch line is electrically commonly connected to the two or more sub-touch electrodes.
11. In paragraph 6, At any point in time, among the above two or more row lines, A first low-potential voltage is applied to a single row line, and A display device in which a second low-potential voltage higher than the first low-potential voltage is applied to the remaining row lines.
12. In paragraph 1, The above display area includes a plurality of touch pixel areas, and Each of the above plurality of touch pixel regions includes a plurality of touch sub-pixel regions, and In each of the above plurality of touch pixel regions, a single touch electrode, which is a single unit touch sensor, is formed, and In each of the above plurality of touch sub-pixel areas, one driver and a plurality of sub-touch electrodes are disposed, and A display device in which sub-touch electrodes disposed in any first touch pixel area among the plurality of touch pixel areas form a single touch electrode corresponding to the first touch pixel area.
13. In paragraph 1, The above plurality of heat lines are positioned below the above plurality of light-emitting elements, and A display device wherein the plurality of row lines are disposed on the plurality of light-emitting elements.
14. In paragraph 1, Each of the above plurality of drivers is, It includes a display driver for driving two or more light-emitting elements among the plurality of light-emitting elements, and a touch driver for sensing two or more sub-touch electrodes included in the touch sensor. A display device comprising a touch driver, a sensing unit electrically connected to two or more sub-touch electrodes, and an analog-to-digital converter that converts the output value of the sensing unit into a sensing value corresponding to a digital value and outputs it.
15. In paragraph 1, A display device comprising at least one of the plurality of drivers including a signal amplification circuit that amplifies and outputs a received signal.
16. In paragraph 1, It further includes a layer stack disposed between the substrate and the plurality of light-emitting elements, The above layer stack is, Side protection layers disposed on each side of the plurality of drivers above; An upper protective layer disposed on the above plurality of drivers and the above side protective layer; An insulating layer disposed on the upper protective layer above; A bank disposed on the insulating layer above; and It includes an optical layer surrounding the plurality of light-emitting elements, and A display device comprising a plurality of light-emitting elements disposed on the bank.
17. In Paragraph 16, A display device comprising at least one organic layer, wherein the above-mentioned side protective layer comprises at least one organic layer.
18. In Paragraph 16, The above optical layer is, A first optical layer surrounding the plurality of light-emitting elements and the bank; and It includes a second optical layer disposed on the side of the first optical layer, and The first optical layer above includes light scattering particles, and The above plurality of row lines are a display device disposed on the first optical layer.
19. In Paragraph 16, A display device wherein each of the plurality of heat lines is disposed on the insulating layer and extends along the side of the bank to the top of the bank.
20. In Paragraph 16, Row connecting electrodes disposed on the insulating layer above; A black matrix disposed on the optical layer and having a plurality of openings that overlap with the plurality of light-emitting elements; and It further includes a partition wall disposed between the touch sensor and the plurality of light-emitting elements, The above partition is a display device comprising the same material as the black matrix.

Description

Display apparatus This specification relates to a display device. Display devices are applied to various electronic devices such as TVs, mobile phones, laptops, and tablets. Display devices include Organic Light Emitting Displays (OLEDs), which emit light themselves, and Liquid Crystal Displays (LCDs), which require a separate light source. Recently, display devices containing light-emitting diodes (LEDs) have been attracting attention as next-generation display devices. Since light-emitting diodes are composed of inorganic materials rather than organic materials, they have a faster lighting speed, superior luminous efficiency, and the ability to display high-brightness images compared to liquid crystal displays or organic light-emitting displays. FIG. 1 shows a display device according to embodiments of the present specification. FIG. 2 is a plan view of a display device according to embodiments of the present specification. FIG. 3 is a plan view of a display panel according to embodiments of the present specification. FIG. 4 is a plan view of a unit driving area of a display panel according to embodiments of the present specification. FIG. 5 shows a subpixel of a display panel according to embodiments of the present specification. FIG. 6 is an equivalent circuit diagram of a unit driving area of a display panel according to embodiments of the present specification. FIG. 7 shows a driving timing diagram for n row lines and 1 column line included in the first sub-driving area of a display panel according to embodiments of the present specification. FIGS. 8 and 9 show circuits for driving n light-emitting elements connected to one column line included in a first sub-driving area of a display panel according to embodiments of the present specification. FIG. 10 is a plan view of a display panel according to embodiments of the present specification. FIG. 11 shows a unit driving area of a display panel according to embodiments of the present specification. FIGS. 12 and FIGS. 13 are plan views of a portion of a display panel according to embodiments of the present specification. FIG. 14 is a cross-sectional view of a display panel according to embodiments of the present specification. FIG. 15 is a detailed cross-sectional view of a display panel according to embodiments of the present specification, and is a cross-sectional view along the AB cutting line of FIG. 10. FIG. 16 is an enlarged cross-sectional view of a first subpixel of a display panel according to embodiments of the present specification. FIG. 17 is a diagram briefly illustrating the touch sensing structure of a display device (100) according to embodiments of the present specification. FIG. 18 shows a touch sensing system of a display device according to embodiments of the present specification. FIG. 19 shows a touch driving structure of a display panel according to embodiments of the present specification. FIG. 20 is a plan view of a display panel according to embodiments of the present specification. FIG. 21 is a cross-sectional view of a display panel according to embodiments of the present specification. FIG. 22 is a block diagram of a driver according to embodiments of the present specification. FIGS. 23 and FIGS. 24 are plan views showing the structure of a touch sensor of a display panel according to embodiments of the present specification. FIG. 25 is a cross-sectional view showing the structure of a touch sensor of a display panel according to embodiments of the present specification. FIG. 26 shows the connection structure of drivers in a display panel according to embodiments of the present specification. FIGS. 27 to 29 are driving timing diagrams of a display device according to embodiments of the present specification. FIGS. 30 and 31 show the state of a subpixel according to the operation mode of a display device according to embodiments of the present specification. The advantages and features of this specification and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, this specification is not limited to the embodiments disclosed below but may be implemented in various different forms, and these embodiments are provided merely to ensure that the disclosure of this specification is complete and to fully inform those skilled in the art of the scope of the invention. Shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are exemplary and are not limited to the depicted items. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of this specification, such detailed description is omitted. Where terms such as “comprising,” “having,” or “consisting of” are used in this specificati