KR-20260064269-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, an overcoat layer disposed on the plurality of light-emitting elements, a touch sensor disposed on the overcoat layer and located in a display area, a touch protection layer disposed on the touch sensor, and a first driver disposed on the substrate and driving the plurality of light-emitting elements and driving or sensing the touch sensor.

Inventors

• 이득수
• 김태윤

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; An overcoat layer disposed on the plurality of light-emitting elements above; A touch sensor disposed on the overcoat layer and located in the display area; A touch protection layer disposed on the above touch sensor; and A display device comprising a first driver disposed on the substrate, which drives the plurality of light-emitting elements and drives or senses the touch sensor.
2. In paragraph 1, The first driver is a display device placed in the display area.
3. In paragraph 1, The first driver is a display device disposed between the substrate and the plurality of light-emitting elements.
4. In paragraph 1, A plurality of heat lines electrically connecting the first electrode of each of the plurality of light-emitting elements and the first driver; and A display device further comprising a plurality of row lines that electrically connect a second electrode of each of the plurality of light-emitting elements and the first driver.
5. In paragraph 4, 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.
6. In paragraph 4, Each of the plurality of column lines is commonly connected to the first electrode of each 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 plurality of rows is commonly connected to the second electrode of each of two or more light-emitting elements arranged in the same row among the plurality of light-emitting elements.
7. In paragraph 4, A display device in which, at any given point in time, among the plurality of row lines, a first low potential voltage is applied to one row line and a second low potential voltage higher than the first low potential voltage is applied to the remaining row lines.
8. In paragraph 1, An optical layer surrounding the plurality of light-emitting elements above; An adhesive layer disposed on the above-mentioned touch protection layer; and A display device further comprising a cover member disposed on the adhesive layer.
9. In paragraph 1, It further includes a second driver disposed on the substrate and driving a plurality of light-emitting elements driven by the first driver and other plurality of light-emitting elements, and The above touch sensor includes a plurality of touch electrodes, and A display device wherein the first driver and the second driver are disposed in an area disposed on the first touch electrode among the plurality of touch electrodes.
10. In Paragraph 9, It includes a plurality of touch pixel regions corresponding to each of the above-mentioned plurality of touch electrodes, and Each of the above plurality of touch pixel regions includes a plurality of touch sub-pixel regions, and The plurality of touch pixel regions includes a first touch pixel region in which the first touch electrode is disposed, and A plurality of touch subpixel areas included in the first touch pixel area include a first touch subpixel area where the first driver is disposed and a second touch subpixel area where the second driver is disposed. A display device wherein the first touch subpixel region comprises a first sub-touch electrode, the second touch subpixel region comprises a second sub-touch electrode, and the first touch electrode comprises the first sub-touch electrode and the second sub-touch electrode.
11. In paragraph 1, The first driver includes a display driver for driving the plurality of light-emitting elements and a touch driver for sensing a first touch electrode included in the touch sensor. A display device comprising a touch driver, a sensing unit electrically connected to the first touch electrode, 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.
12. In paragraph 1, Each of the plurality of touch electrodes included in the above touch sensor is arranged in a mesh form having a plurality of openings, and A display device in which the plurality of light-emitting elements each overlap with the plurality of openings.
13. In Paragraph 11, A display device further comprising a touch cover layer arranged in a mesh shape while covering each of the plurality of touch electrodes.
14. In paragraph 1, A display device in which each of the plurality of touch electrodes included in the above touch sensor comprises a transparent conductive material and overlaps with the plurality of light-emitting elements.
15. 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, A side protection layer disposed on the side of the first driver; An upper protective layer disposed on the first driver and the side protective layer; An insulating layer disposed on the upper protective layer above; A bank disposed on the above insulating layer; It further includes a first optical layer surrounding the plurality of light-emitting elements, and A display device comprising a plurality of light-emitting elements disposed on the bank.
16. In paragraph 15, A display device comprising at least one organic layer, wherein the above-mentioned side protective layer comprises at least one organic layer.
17. In paragraph 15, A plurality of heat lines electrically connecting the first electrode of each of the plurality of light-emitting elements and the first driver; and It further includes a plurality of row lines that electrically connect the second electrode of each of the plurality of light-emitting elements and the first driver, and Each of the plurality of heat lines is disposed on the insulating layer and extends along the side of the bank and is electrically connected to the first electrode of the corresponding light-emitting element located on the upper part of the bank, and A display device in which each of the above plurality of row lines is disposed on the first optical layer.
18. In Paragraph 17, A second optical layer disposed on the side of the first optical layer; and It further includes a third optical layer disposed on the plurality of row lines and overlapping with the plurality of light-emitting elements, A display device in which each of the above plurality of row lines overlaps with the above plurality of light-emitting elements.
19. In Paragraph 17, Row connecting electrodes disposed on the insulating layer above; and It further includes a black matrix disposed on the third optical layer and having a plurality of openings that overlap with the plurality of light-emitting elements, and A display device in which each of the plurality of row lines is electrically connected to the row connecting electrode through the contact hole of the second optical layer, and the black matrix is inserted inside the contact hole.
20. In Paragraph 17, A line connection pattern that electrically connects each of the plurality of row lines to the first driver or electrically connects each of the plurality of column lines to the first driver; A first touch connection electrode disposed on the insulating layer and electrically connected to each of a plurality of touch electrodes included in the touch sensor; and It further includes a touch connection pattern that electrically connects the first touch connection electrode and the first driver, and A display device in which the first touch connection electrode comprises the same material as the plurality of heat lines.

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 first driver according to embodiments of the present specification. FIGS. 23 and 24 show the structure of a touch sensor of a display panel according to embodiments of the present specification. FIGS. 25 and 26 show the structure of a touch sensor of 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 specification, other parts may be added unless terms such as “only” are used. Where a component is expressed in the singular, it includes cases where it is included in the pl